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linux-next/drivers/net/ethernet/intel/i40e/i40e_main.c
Jeff Kirsher a1c9a9d998 i40e: Implementation of VXLAN ndo's 
This adds the implementation for the VXLAN ndo's.  This allows the
hardware to do RX checksum offload for inner packets on the UDP ports
that VXLAN notifies us about.

Signed-off-by: Joseph Gasparakis <joseph.gasparakis@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-01-03 20:11:44 -08:00

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/*******************************************************************************
*
* Intel Ethernet Controller XL710 Family Linux Driver
* Copyright(c) 2013 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
* The full GNU General Public License is included in this distribution in
* the file called "COPYING".
*
* Contact Information:
* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
******************************************************************************/
/* Local includes */
#include "i40e.h"
#ifdef CONFIG_I40E_VXLAN
#include <net/vxlan.h>
#endif
const char i40e_driver_name[] = "i40e";
static const char i40e_driver_string[] =
"Intel(R) Ethernet Connection XL710 Network Driver";
#define DRV_KERN "-k"
#define DRV_VERSION_MAJOR 0
#define DRV_VERSION_MINOR 3
#define DRV_VERSION_BUILD 14
#define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
__stringify(DRV_VERSION_MINOR) "." \
__stringify(DRV_VERSION_BUILD) DRV_KERN
const char i40e_driver_version_str[] = DRV_VERSION;
static const char i40e_copyright[] = "Copyright (c) 2013 Intel Corporation.";
/* a bit of forward declarations */
static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
static void i40e_handle_reset_warning(struct i40e_pf *pf);
static int i40e_add_vsi(struct i40e_vsi *vsi);
static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
static int i40e_setup_misc_vector(struct i40e_pf *pf);
static void i40e_determine_queue_usage(struct i40e_pf *pf);
static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
/* i40e_pci_tbl - PCI Device ID Table
*
* Last entry must be all 0s
*
* { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
* Class, Class Mask, private data (not used) }
*/
static DEFINE_PCI_DEVICE_TABLE(i40e_pci_tbl) = {
{PCI_VDEVICE(INTEL, I40E_SFP_XL710_DEVICE_ID), 0},
{PCI_VDEVICE(INTEL, I40E_SFP_X710_DEVICE_ID), 0},
{PCI_VDEVICE(INTEL, I40E_QEMU_DEVICE_ID), 0},
{PCI_VDEVICE(INTEL, I40E_KX_A_DEVICE_ID), 0},
{PCI_VDEVICE(INTEL, I40E_KX_B_DEVICE_ID), 0},
{PCI_VDEVICE(INTEL, I40E_KX_C_DEVICE_ID), 0},
{PCI_VDEVICE(INTEL, I40E_KX_D_DEVICE_ID), 0},
{PCI_VDEVICE(INTEL, I40E_QSFP_A_DEVICE_ID), 0},
{PCI_VDEVICE(INTEL, I40E_QSFP_B_DEVICE_ID), 0},
{PCI_VDEVICE(INTEL, I40E_QSFP_C_DEVICE_ID), 0},
/* required last entry */
{0, }
};
MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
#define I40E_MAX_VF_COUNT 128
static int debug = -1;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
/**
* i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
* @hw: pointer to the HW structure
* @mem: ptr to mem struct to fill out
* @size: size of memory requested
* @alignment: what to align the allocation to
**/
int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
u64 size, u32 alignment)
{
struct i40e_pf *pf = (struct i40e_pf *)hw->back;
mem->size = ALIGN(size, alignment);
mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
&mem->pa, GFP_KERNEL);
if (!mem->va)
return -ENOMEM;
return 0;
}
/**
* i40e_free_dma_mem_d - OS specific memory free for shared code
* @hw: pointer to the HW structure
* @mem: ptr to mem struct to free
**/
int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
{
struct i40e_pf *pf = (struct i40e_pf *)hw->back;
dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
mem->va = NULL;
mem->pa = 0;
mem->size = 0;
return 0;
}
/**
* i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
* @hw: pointer to the HW structure
* @mem: ptr to mem struct to fill out
* @size: size of memory requested
**/
int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
u32 size)
{
mem->size = size;
mem->va = kzalloc(size, GFP_KERNEL);
if (!mem->va)
return -ENOMEM;
return 0;
}
/**
* i40e_free_virt_mem_d - OS specific memory free for shared code
* @hw: pointer to the HW structure
* @mem: ptr to mem struct to free
**/
int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
{
/* it's ok to kfree a NULL pointer */
kfree(mem->va);
mem->va = NULL;
mem->size = 0;
return 0;
}
/**
* i40e_get_lump - find a lump of free generic resource
* @pf: board private structure
* @pile: the pile of resource to search
* @needed: the number of items needed
* @id: an owner id to stick on the items assigned
*
* Returns the base item index of the lump, or negative for error
*
* The search_hint trick and lack of advanced fit-finding only work
* because we're highly likely to have all the same size lump requests.
* Linear search time and any fragmentation should be minimal.
**/
static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
u16 needed, u16 id)
{
int ret = -ENOMEM;
int i, j;
if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
dev_info(&pf->pdev->dev,
"param err: pile=%p needed=%d id=0x%04x\n",
pile, needed, id);
return -EINVAL;
}
/* start the linear search with an imperfect hint */
i = pile->search_hint;
while (i < pile->num_entries) {
/* skip already allocated entries */
if (pile->list[i] & I40E_PILE_VALID_BIT) {
i++;
continue;
}
/* do we have enough in this lump? */
for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
if (pile->list[i+j] & I40E_PILE_VALID_BIT)
break;
}
if (j == needed) {
/* there was enough, so assign it to the requestor */
for (j = 0; j < needed; j++)
pile->list[i+j] = id | I40E_PILE_VALID_BIT;
ret = i;
pile->search_hint = i + j;
break;
} else {
/* not enough, so skip over it and continue looking */
i += j;
}
}
return ret;
}
/**
* i40e_put_lump - return a lump of generic resource
* @pile: the pile of resource to search
* @index: the base item index
* @id: the owner id of the items assigned
*
* Returns the count of items in the lump
**/
static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
{
int valid_id = (id | I40E_PILE_VALID_BIT);
int count = 0;
int i;
if (!pile || index >= pile->num_entries)
return -EINVAL;
for (i = index;
i < pile->num_entries && pile->list[i] == valid_id;
i++) {
pile->list[i] = 0;
count++;
}
if (count && index < pile->search_hint)
pile->search_hint = index;
return count;
}
/**
* i40e_service_event_schedule - Schedule the service task to wake up
* @pf: board private structure
*
* If not already scheduled, this puts the task into the work queue
**/
static void i40e_service_event_schedule(struct i40e_pf *pf)
{
if (!test_bit(__I40E_DOWN, &pf->state) &&
!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
!test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
schedule_work(&pf->service_task);
}
/**
* i40e_tx_timeout - Respond to a Tx Hang
* @netdev: network interface device structure
*
* If any port has noticed a Tx timeout, it is likely that the whole
* device is munged, not just the one netdev port, so go for the full
* reset.
**/
static void i40e_tx_timeout(struct net_device *netdev)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
pf->tx_timeout_count++;
if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
pf->tx_timeout_recovery_level = 0;
pf->tx_timeout_last_recovery = jiffies;
netdev_info(netdev, "tx_timeout recovery level %d\n",
pf->tx_timeout_recovery_level);
switch (pf->tx_timeout_recovery_level) {
case 0:
/* disable and re-enable queues for the VSI */
if (in_interrupt()) {
set_bit(__I40E_REINIT_REQUESTED, &pf->state);
set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
} else {
i40e_vsi_reinit_locked(vsi);
}
break;
case 1:
set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
break;
case 2:
set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
break;
case 3:
set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
break;
default:
netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
i40e_down(vsi);
break;
}
i40e_service_event_schedule(pf);
pf->tx_timeout_recovery_level++;
}
/**
* i40e_release_rx_desc - Store the new tail and head values
* @rx_ring: ring to bump
* @val: new head index
**/
static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
{
rx_ring->next_to_use = val;
/* Force memory writes to complete before letting h/w
* know there are new descriptors to fetch. (Only
* applicable for weak-ordered memory model archs,
* such as IA-64).
*/
wmb();
writel(val, rx_ring->tail);
}
/**
* i40e_get_vsi_stats_struct - Get System Network Statistics
* @vsi: the VSI we care about
*
* Returns the address of the device statistics structure.
* The statistics are actually updated from the service task.
**/
struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
{
return &vsi->net_stats;
}
/**
* i40e_get_netdev_stats_struct - Get statistics for netdev interface
* @netdev: network interface device structure
*
* Returns the address of the device statistics structure.
* The statistics are actually updated from the service task.
**/
static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
struct net_device *netdev,
struct rtnl_link_stats64 *stats)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
int i;
if (test_bit(__I40E_DOWN, &vsi->state))
return stats;
if (!vsi->tx_rings)
return stats;
rcu_read_lock();
for (i = 0; i < vsi->num_queue_pairs; i++) {
struct i40e_ring *tx_ring, *rx_ring;
u64 bytes, packets;
unsigned int start;
tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
if (!tx_ring)
continue;
do {
start = u64_stats_fetch_begin_bh(&tx_ring->syncp);
packets = tx_ring->stats.packets;
bytes = tx_ring->stats.bytes;
} while (u64_stats_fetch_retry_bh(&tx_ring->syncp, start));
stats->tx_packets += packets;
stats->tx_bytes += bytes;
rx_ring = &tx_ring[1];
do {
start = u64_stats_fetch_begin_bh(&rx_ring->syncp);
packets = rx_ring->stats.packets;
bytes = rx_ring->stats.bytes;
} while (u64_stats_fetch_retry_bh(&rx_ring->syncp, start));
stats->rx_packets += packets;
stats->rx_bytes += bytes;
}
rcu_read_unlock();
/* following stats updated by ixgbe_watchdog_task() */
stats->multicast = vsi_stats->multicast;
stats->tx_errors = vsi_stats->tx_errors;
stats->tx_dropped = vsi_stats->tx_dropped;
stats->rx_errors = vsi_stats->rx_errors;
stats->rx_crc_errors = vsi_stats->rx_crc_errors;
stats->rx_length_errors = vsi_stats->rx_length_errors;
return stats;
}
/**
* i40e_vsi_reset_stats - Resets all stats of the given vsi
* @vsi: the VSI to have its stats reset
**/
void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
{
struct rtnl_link_stats64 *ns;
int i;
if (!vsi)
return;
ns = i40e_get_vsi_stats_struct(vsi);
memset(ns, 0, sizeof(*ns));
memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
if (vsi->rx_rings)
for (i = 0; i < vsi->num_queue_pairs; i++) {
memset(&vsi->rx_rings[i]->stats, 0 ,
sizeof(vsi->rx_rings[i]->stats));
memset(&vsi->rx_rings[i]->rx_stats, 0 ,
sizeof(vsi->rx_rings[i]->rx_stats));
memset(&vsi->tx_rings[i]->stats, 0 ,
sizeof(vsi->tx_rings[i]->stats));
memset(&vsi->tx_rings[i]->tx_stats, 0,
sizeof(vsi->tx_rings[i]->tx_stats));
}
vsi->stat_offsets_loaded = false;
}
/**
* i40e_pf_reset_stats - Reset all of the stats for the given pf
* @pf: the PF to be reset
**/
void i40e_pf_reset_stats(struct i40e_pf *pf)
{
memset(&pf->stats, 0, sizeof(pf->stats));
memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
pf->stat_offsets_loaded = false;
}
/**
* i40e_stat_update48 - read and update a 48 bit stat from the chip
* @hw: ptr to the hardware info
* @hireg: the high 32 bit reg to read
* @loreg: the low 32 bit reg to read
* @offset_loaded: has the initial offset been loaded yet
* @offset: ptr to current offset value
* @stat: ptr to the stat
*
* Since the device stats are not reset at PFReset, they likely will not
* be zeroed when the driver starts. We'll save the first values read
* and use them as offsets to be subtracted from the raw values in order
* to report stats that count from zero. In the process, we also manage
* the potential roll-over.
**/
static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
bool offset_loaded, u64 *offset, u64 *stat)
{
u64 new_data;
if (hw->device_id == I40E_QEMU_DEVICE_ID) {
new_data = rd32(hw, loreg);
new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
} else {
new_data = rd64(hw, loreg);
}
if (!offset_loaded)
*offset = new_data;
if (likely(new_data >= *offset))
*stat = new_data - *offset;
else
*stat = (new_data + ((u64)1 << 48)) - *offset;
*stat &= 0xFFFFFFFFFFFFULL;
}
/**
* i40e_stat_update32 - read and update a 32 bit stat from the chip
* @hw: ptr to the hardware info
* @reg: the hw reg to read
* @offset_loaded: has the initial offset been loaded yet
* @offset: ptr to current offset value
* @stat: ptr to the stat
**/
static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
bool offset_loaded, u64 *offset, u64 *stat)
{
u32 new_data;
new_data = rd32(hw, reg);
if (!offset_loaded)
*offset = new_data;
if (likely(new_data >= *offset))
*stat = (u32)(new_data - *offset);
else
*stat = (u32)((new_data + ((u64)1 << 32)) - *offset);
}
/**
* i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
* @vsi: the VSI to be updated
**/
void i40e_update_eth_stats(struct i40e_vsi *vsi)
{
int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
struct i40e_eth_stats *oes;
struct i40e_eth_stats *es; /* device's eth stats */
es = &vsi->eth_stats;
oes = &vsi->eth_stats_offsets;
/* Gather up the stats that the hw collects */
i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
vsi->stat_offsets_loaded,
&oes->tx_errors, &es->tx_errors);
i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
vsi->stat_offsets_loaded,
&oes->rx_discards, &es->rx_discards);
i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
I40E_GLV_GORCL(stat_idx),
vsi->stat_offsets_loaded,
&oes->rx_bytes, &es->rx_bytes);
i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
I40E_GLV_UPRCL(stat_idx),
vsi->stat_offsets_loaded,
&oes->rx_unicast, &es->rx_unicast);
i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
I40E_GLV_MPRCL(stat_idx),
vsi->stat_offsets_loaded,
&oes->rx_multicast, &es->rx_multicast);
i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
I40E_GLV_BPRCL(stat_idx),
vsi->stat_offsets_loaded,
&oes->rx_broadcast, &es->rx_broadcast);
i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
I40E_GLV_GOTCL(stat_idx),
vsi->stat_offsets_loaded,
&oes->tx_bytes, &es->tx_bytes);
i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
I40E_GLV_UPTCL(stat_idx),
vsi->stat_offsets_loaded,
&oes->tx_unicast, &es->tx_unicast);
i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
I40E_GLV_MPTCL(stat_idx),
vsi->stat_offsets_loaded,
&oes->tx_multicast, &es->tx_multicast);
i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
I40E_GLV_BPTCL(stat_idx),
vsi->stat_offsets_loaded,
&oes->tx_broadcast, &es->tx_broadcast);
vsi->stat_offsets_loaded = true;
}
/**
* i40e_update_veb_stats - Update Switch component statistics
* @veb: the VEB being updated
**/
static void i40e_update_veb_stats(struct i40e_veb *veb)
{
struct i40e_pf *pf = veb->pf;
struct i40e_hw *hw = &pf->hw;
struct i40e_eth_stats *oes;
struct i40e_eth_stats *es; /* device's eth stats */
int idx = 0;
idx = veb->stats_idx;
es = &veb->stats;
oes = &veb->stats_offsets;
/* Gather up the stats that the hw collects */
i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
veb->stat_offsets_loaded,
&oes->tx_discards, &es->tx_discards);
if (hw->revision_id > 0)
i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
veb->stat_offsets_loaded,
&oes->rx_unknown_protocol,
&es->rx_unknown_protocol);
i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
veb->stat_offsets_loaded,
&oes->rx_bytes, &es->rx_bytes);
i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
veb->stat_offsets_loaded,
&oes->rx_unicast, &es->rx_unicast);
i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
veb->stat_offsets_loaded,
&oes->rx_multicast, &es->rx_multicast);
i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
veb->stat_offsets_loaded,
&oes->rx_broadcast, &es->rx_broadcast);
i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
veb->stat_offsets_loaded,
&oes->tx_bytes, &es->tx_bytes);
i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
veb->stat_offsets_loaded,
&oes->tx_unicast, &es->tx_unicast);
i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
veb->stat_offsets_loaded,
&oes->tx_multicast, &es->tx_multicast);
i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
veb->stat_offsets_loaded,
&oes->tx_broadcast, &es->tx_broadcast);
veb->stat_offsets_loaded = true;
}
/**
* i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
* @pf: the corresponding PF
*
* Update the Rx XOFF counter (PAUSE frames) in link flow control mode
**/
static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
{
struct i40e_hw_port_stats *osd = &pf->stats_offsets;
struct i40e_hw_port_stats *nsd = &pf->stats;
struct i40e_hw *hw = &pf->hw;
u64 xoff = 0;
u16 i, v;
if ((hw->fc.current_mode != I40E_FC_FULL) &&
(hw->fc.current_mode != I40E_FC_RX_PAUSE))
return;
xoff = nsd->link_xoff_rx;
i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
pf->stat_offsets_loaded,
&osd->link_xoff_rx, &nsd->link_xoff_rx);
/* No new LFC xoff rx */
if (!(nsd->link_xoff_rx - xoff))
return;
/* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
struct i40e_vsi *vsi = pf->vsi[v];
if (!vsi)
continue;
for (i = 0; i < vsi->num_queue_pairs; i++) {
struct i40e_ring *ring = vsi->tx_rings[i];
clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
}
}
}
/**
* i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
* @pf: the corresponding PF
*
* Update the Rx XOFF counter (PAUSE frames) in PFC mode
**/
static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
{
struct i40e_hw_port_stats *osd = &pf->stats_offsets;
struct i40e_hw_port_stats *nsd = &pf->stats;
bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
struct i40e_dcbx_config *dcb_cfg;
struct i40e_hw *hw = &pf->hw;
u16 i, v;
u8 tc;
dcb_cfg = &hw->local_dcbx_config;
/* See if DCB enabled with PFC TC */
if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
!(dcb_cfg->pfc.pfcenable)) {
i40e_update_link_xoff_rx(pf);
return;
}
for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
u64 prio_xoff = nsd->priority_xoff_rx[i];
i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
pf->stat_offsets_loaded,
&osd->priority_xoff_rx[i],
&nsd->priority_xoff_rx[i]);
/* No new PFC xoff rx */
if (!(nsd->priority_xoff_rx[i] - prio_xoff))
continue;
/* Get the TC for given priority */
tc = dcb_cfg->etscfg.prioritytable[i];
xoff[tc] = true;
}
/* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
struct i40e_vsi *vsi = pf->vsi[v];
if (!vsi)
continue;
for (i = 0; i < vsi->num_queue_pairs; i++) {
struct i40e_ring *ring = vsi->tx_rings[i];
tc = ring->dcb_tc;
if (xoff[tc])
clear_bit(__I40E_HANG_CHECK_ARMED,
&ring->state);
}
}
}
/**
* i40e_update_stats - Update the board statistics counters.
* @vsi: the VSI to be updated
*
* There are a few instances where we store the same stat in a
* couple of different structs. This is partly because we have
* the netdev stats that need to be filled out, which is slightly
* different from the "eth_stats" defined by the chip and used in
* VF communications. We sort it all out here in a central place.
**/
void i40e_update_stats(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
struct rtnl_link_stats64 *ons;
struct rtnl_link_stats64 *ns; /* netdev stats */
struct i40e_eth_stats *oes;
struct i40e_eth_stats *es; /* device's eth stats */
u32 tx_restart, tx_busy;
u32 rx_page, rx_buf;
u64 rx_p, rx_b;
u64 tx_p, tx_b;
int i;
u16 q;
if (test_bit(__I40E_DOWN, &vsi->state) ||
test_bit(__I40E_CONFIG_BUSY, &pf->state))
return;
ns = i40e_get_vsi_stats_struct(vsi);
ons = &vsi->net_stats_offsets;
es = &vsi->eth_stats;
oes = &vsi->eth_stats_offsets;
/* Gather up the netdev and vsi stats that the driver collects
* on the fly during packet processing
*/
rx_b = rx_p = 0;
tx_b = tx_p = 0;
tx_restart = tx_busy = 0;
rx_page = 0;
rx_buf = 0;
rcu_read_lock();
for (q = 0; q < vsi->num_queue_pairs; q++) {
struct i40e_ring *p;
u64 bytes, packets;
unsigned int start;
/* locate Tx ring */
p = ACCESS_ONCE(vsi->tx_rings[q]);
do {
start = u64_stats_fetch_begin_bh(&p->syncp);
packets = p->stats.packets;
bytes = p->stats.bytes;
} while (u64_stats_fetch_retry_bh(&p->syncp, start));
tx_b += bytes;
tx_p += packets;
tx_restart += p->tx_stats.restart_queue;
tx_busy += p->tx_stats.tx_busy;
/* Rx queue is part of the same block as Tx queue */
p = &p[1];
do {
start = u64_stats_fetch_begin_bh(&p->syncp);
packets = p->stats.packets;
bytes = p->stats.bytes;
} while (u64_stats_fetch_retry_bh(&p->syncp, start));
rx_b += bytes;
rx_p += packets;
rx_buf += p->rx_stats.alloc_rx_buff_failed;
rx_page += p->rx_stats.alloc_rx_page_failed;
}
rcu_read_unlock();
vsi->tx_restart = tx_restart;
vsi->tx_busy = tx_busy;
vsi->rx_page_failed = rx_page;
vsi->rx_buf_failed = rx_buf;
ns->rx_packets = rx_p;
ns->rx_bytes = rx_b;
ns->tx_packets = tx_p;
ns->tx_bytes = tx_b;
i40e_update_eth_stats(vsi);
/* update netdev stats from eth stats */
ons->rx_errors = oes->rx_errors;
ns->rx_errors = es->rx_errors;
ons->tx_errors = oes->tx_errors;
ns->tx_errors = es->tx_errors;
ons->multicast = oes->rx_multicast;
ns->multicast = es->rx_multicast;
ons->tx_dropped = oes->tx_discards;
ns->tx_dropped = es->tx_discards;
/* Get the port data only if this is the main PF VSI */
if (vsi == pf->vsi[pf->lan_vsi]) {
struct i40e_hw_port_stats *nsd = &pf->stats;
struct i40e_hw_port_stats *osd = &pf->stats_offsets;
i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
I40E_GLPRT_GORCL(hw->port),
pf->stat_offsets_loaded,
&osd->eth.rx_bytes, &nsd->eth.rx_bytes);
i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
I40E_GLPRT_GOTCL(hw->port),
pf->stat_offsets_loaded,
&osd->eth.tx_bytes, &nsd->eth.tx_bytes);
i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
pf->stat_offsets_loaded,
&osd->eth.rx_discards,
&nsd->eth.rx_discards);
i40e_stat_update32(hw, I40E_GLPRT_TDPC(hw->port),
pf->stat_offsets_loaded,
&osd->eth.tx_discards,
&nsd->eth.tx_discards);
i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
I40E_GLPRT_MPRCL(hw->port),
pf->stat_offsets_loaded,
&osd->eth.rx_multicast,
&nsd->eth.rx_multicast);
i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
pf->stat_offsets_loaded,
&osd->tx_dropped_link_down,
&nsd->tx_dropped_link_down);
i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
pf->stat_offsets_loaded,
&osd->crc_errors, &nsd->crc_errors);
ns->rx_crc_errors = nsd->crc_errors;
i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
pf->stat_offsets_loaded,
&osd->illegal_bytes, &nsd->illegal_bytes);
ns->rx_errors = nsd->crc_errors
+ nsd->illegal_bytes;
i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
pf->stat_offsets_loaded,
&osd->mac_local_faults,
&nsd->mac_local_faults);
i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
pf->stat_offsets_loaded,
&osd->mac_remote_faults,
&nsd->mac_remote_faults);
i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
pf->stat_offsets_loaded,
&osd->rx_length_errors,
&nsd->rx_length_errors);
ns->rx_length_errors = nsd->rx_length_errors;
i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
pf->stat_offsets_loaded,
&osd->link_xon_rx, &nsd->link_xon_rx);
i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
pf->stat_offsets_loaded,
&osd->link_xon_tx, &nsd->link_xon_tx);
i40e_update_prio_xoff_rx(pf); /* handles I40E_GLPRT_LXOFFRXC */
i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
pf->stat_offsets_loaded,
&osd->link_xoff_tx, &nsd->link_xoff_tx);
for (i = 0; i < 8; i++) {
i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
pf->stat_offsets_loaded,
&osd->priority_xon_rx[i],
&nsd->priority_xon_rx[i]);
i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
pf->stat_offsets_loaded,
&osd->priority_xon_tx[i],
&nsd->priority_xon_tx[i]);
i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
pf->stat_offsets_loaded,
&osd->priority_xoff_tx[i],
&nsd->priority_xoff_tx[i]);
i40e_stat_update32(hw,
I40E_GLPRT_RXON2OFFCNT(hw->port, i),
pf->stat_offsets_loaded,
&osd->priority_xon_2_xoff[i],
&nsd->priority_xon_2_xoff[i]);
}
i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
I40E_GLPRT_PRC64L(hw->port),
pf->stat_offsets_loaded,
&osd->rx_size_64, &nsd->rx_size_64);
i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
I40E_GLPRT_PRC127L(hw->port),
pf->stat_offsets_loaded,
&osd->rx_size_127, &nsd->rx_size_127);
i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
I40E_GLPRT_PRC255L(hw->port),
pf->stat_offsets_loaded,
&osd->rx_size_255, &nsd->rx_size_255);
i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
I40E_GLPRT_PRC511L(hw->port),
pf->stat_offsets_loaded,
&osd->rx_size_511, &nsd->rx_size_511);
i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
I40E_GLPRT_PRC1023L(hw->port),
pf->stat_offsets_loaded,
&osd->rx_size_1023, &nsd->rx_size_1023);
i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
I40E_GLPRT_PRC1522L(hw->port),
pf->stat_offsets_loaded,
&osd->rx_size_1522, &nsd->rx_size_1522);
i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
I40E_GLPRT_PRC9522L(hw->port),
pf->stat_offsets_loaded,
&osd->rx_size_big, &nsd->rx_size_big);
i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
I40E_GLPRT_PTC64L(hw->port),
pf->stat_offsets_loaded,
&osd->tx_size_64, &nsd->tx_size_64);
i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
I40E_GLPRT_PTC127L(hw->port),
pf->stat_offsets_loaded,
&osd->tx_size_127, &nsd->tx_size_127);
i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
I40E_GLPRT_PTC255L(hw->port),
pf->stat_offsets_loaded,
&osd->tx_size_255, &nsd->tx_size_255);
i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
I40E_GLPRT_PTC511L(hw->port),
pf->stat_offsets_loaded,
&osd->tx_size_511, &nsd->tx_size_511);
i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
I40E_GLPRT_PTC1023L(hw->port),
pf->stat_offsets_loaded,
&osd->tx_size_1023, &nsd->tx_size_1023);
i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
I40E_GLPRT_PTC1522L(hw->port),
pf->stat_offsets_loaded,
&osd->tx_size_1522, &nsd->tx_size_1522);
i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
I40E_GLPRT_PTC9522L(hw->port),
pf->stat_offsets_loaded,
&osd->tx_size_big, &nsd->tx_size_big);
i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
pf->stat_offsets_loaded,
&osd->rx_undersize, &nsd->rx_undersize);
i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
pf->stat_offsets_loaded,
&osd->rx_fragments, &nsd->rx_fragments);
i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
pf->stat_offsets_loaded,
&osd->rx_oversize, &nsd->rx_oversize);
i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
pf->stat_offsets_loaded,
&osd->rx_jabber, &nsd->rx_jabber);
}
pf->stat_offsets_loaded = true;
}
/**
* i40e_find_filter - Search VSI filter list for specific mac/vlan filter
* @vsi: the VSI to be searched
* @macaddr: the MAC address
* @vlan: the vlan
* @is_vf: make sure its a vf filter, else doesn't matter
* @is_netdev: make sure its a netdev filter, else doesn't matter
*
* Returns ptr to the filter object or NULL
**/
static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
u8 *macaddr, s16 vlan,
bool is_vf, bool is_netdev)
{
struct i40e_mac_filter *f;
if (!vsi || !macaddr)
return NULL;
list_for_each_entry(f, &vsi->mac_filter_list, list) {
if ((ether_addr_equal(macaddr, f->macaddr)) &&
(vlan == f->vlan) &&
(!is_vf || f->is_vf) &&
(!is_netdev || f->is_netdev))
return f;
}
return NULL;
}
/**
* i40e_find_mac - Find a mac addr in the macvlan filters list
* @vsi: the VSI to be searched
* @macaddr: the MAC address we are searching for
* @is_vf: make sure its a vf filter, else doesn't matter
* @is_netdev: make sure its a netdev filter, else doesn't matter
*
* Returns the first filter with the provided MAC address or NULL if
* MAC address was not found
**/
struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
bool is_vf, bool is_netdev)
{
struct i40e_mac_filter *f;
if (!vsi || !macaddr)
return NULL;
list_for_each_entry(f, &vsi->mac_filter_list, list) {
if ((ether_addr_equal(macaddr, f->macaddr)) &&
(!is_vf || f->is_vf) &&
(!is_netdev || f->is_netdev))
return f;
}
return NULL;
}
/**
* i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
* @vsi: the VSI to be searched
*
* Returns true if VSI is in vlan mode or false otherwise
**/
bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
{
struct i40e_mac_filter *f;
/* Only -1 for all the filters denotes not in vlan mode
* so we have to go through all the list in order to make sure
*/
list_for_each_entry(f, &vsi->mac_filter_list, list) {
if (f->vlan >= 0)
return true;
}
return false;
}
/**
* i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
* @vsi: the VSI to be searched
* @macaddr: the mac address to be filtered
* @is_vf: true if it is a vf
* @is_netdev: true if it is a netdev
*
* Goes through all the macvlan filters and adds a
* macvlan filter for each unique vlan that already exists
*
* Returns first filter found on success, else NULL
**/
struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
bool is_vf, bool is_netdev)
{
struct i40e_mac_filter *f;
list_for_each_entry(f, &vsi->mac_filter_list, list) {
if (!i40e_find_filter(vsi, macaddr, f->vlan,
is_vf, is_netdev)) {
if (!i40e_add_filter(vsi, macaddr, f->vlan,
is_vf, is_netdev))
return NULL;
}
}
return list_first_entry_or_null(&vsi->mac_filter_list,
struct i40e_mac_filter, list);
}
/**
* i40e_add_filter - Add a mac/vlan filter to the VSI
* @vsi: the VSI to be searched
* @macaddr: the MAC address
* @vlan: the vlan
* @is_vf: make sure its a vf filter, else doesn't matter
* @is_netdev: make sure its a netdev filter, else doesn't matter
*
* Returns ptr to the filter object or NULL when no memory available.
**/
struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
u8 *macaddr, s16 vlan,
bool is_vf, bool is_netdev)
{
struct i40e_mac_filter *f;
if (!vsi || !macaddr)
return NULL;
f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
if (!f) {
f = kzalloc(sizeof(*f), GFP_ATOMIC);
if (!f)
goto add_filter_out;
memcpy(f->macaddr, macaddr, ETH_ALEN);
f->vlan = vlan;
f->changed = true;
INIT_LIST_HEAD(&f->list);
list_add(&f->list, &vsi->mac_filter_list);
}
/* increment counter and add a new flag if needed */
if (is_vf) {
if (!f->is_vf) {
f->is_vf = true;
f->counter++;
}
} else if (is_netdev) {
if (!f->is_netdev) {
f->is_netdev = true;
f->counter++;
}
} else {
f->counter++;
}
/* changed tells sync_filters_subtask to
* push the filter down to the firmware
*/
if (f->changed) {
vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
}
add_filter_out:
return f;
}
/**
* i40e_del_filter - Remove a mac/vlan filter from the VSI
* @vsi: the VSI to be searched
* @macaddr: the MAC address
* @vlan: the vlan
* @is_vf: make sure it's a vf filter, else doesn't matter
* @is_netdev: make sure it's a netdev filter, else doesn't matter
**/
void i40e_del_filter(struct i40e_vsi *vsi,
u8 *macaddr, s16 vlan,
bool is_vf, bool is_netdev)
{
struct i40e_mac_filter *f;
if (!vsi || !macaddr)
return;
f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
if (!f || f->counter == 0)
return;
if (is_vf) {
if (f->is_vf) {
f->is_vf = false;
f->counter--;
}
} else if (is_netdev) {
if (f->is_netdev) {
f->is_netdev = false;
f->counter--;
}
} else {
/* make sure we don't remove a filter in use by vf or netdev */
int min_f = 0;
min_f += (f->is_vf ? 1 : 0);
min_f += (f->is_netdev ? 1 : 0);
if (f->counter > min_f)
f->counter--;
}
/* counter == 0 tells sync_filters_subtask to
* remove the filter from the firmware's list
*/
if (f->counter == 0) {
f->changed = true;
vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
}
}
/**
* i40e_set_mac - NDO callback to set mac address
* @netdev: network interface device structure
* @p: pointer to an address structure
*
* Returns 0 on success, negative on failure
**/
static int i40e_set_mac(struct net_device *netdev, void *p)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct sockaddr *addr = p;
struct i40e_mac_filter *f;
if (!is_valid_ether_addr(addr->sa_data))
return -EADDRNOTAVAIL;
netdev_info(netdev, "set mac address=%pM\n", addr->sa_data);
if (ether_addr_equal(netdev->dev_addr, addr->sa_data))
return 0;
if (vsi->type == I40E_VSI_MAIN) {
i40e_status ret;
ret = i40e_aq_mac_address_write(&vsi->back->hw,
I40E_AQC_WRITE_TYPE_LAA_ONLY,
addr->sa_data, NULL);
if (ret) {
netdev_info(netdev,
"Addr change for Main VSI failed: %d\n",
ret);
return -EADDRNOTAVAIL;
}
memcpy(vsi->back->hw.mac.addr, addr->sa_data, netdev->addr_len);
}
/* In order to be sure to not drop any packets, add the new address
* then delete the old one.
*/
f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY, false, false);
if (!f)
return -ENOMEM;
i40e_sync_vsi_filters(vsi);
i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY, false, false);
i40e_sync_vsi_filters(vsi);
memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
return 0;
}
/**
* i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
* @vsi: the VSI being setup
* @ctxt: VSI context structure
* @enabled_tc: Enabled TCs bitmap
* @is_add: True if called before Add VSI
*
* Setup VSI queue mapping for enabled traffic classes.
**/
static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
struct i40e_vsi_context *ctxt,
u8 enabled_tc,
bool is_add)
{
struct i40e_pf *pf = vsi->back;
u16 sections = 0;
u8 netdev_tc = 0;
u16 numtc = 0;
u16 qcount;
u8 offset;
u16 qmap;
int i;
sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
offset = 0;
if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
/* Find numtc from enabled TC bitmap */
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
if (enabled_tc & (1 << i)) /* TC is enabled */
numtc++;
}
if (!numtc) {
dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
numtc = 1;
}
} else {
/* At least TC0 is enabled in case of non-DCB case */
numtc = 1;
}
vsi->tc_config.numtc = numtc;
vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
/* Setup queue offset/count for all TCs for given VSI */
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
/* See if the given TC is enabled for the given VSI */
if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
int pow, num_qps;
vsi->tc_config.tc_info[i].qoffset = offset;
switch (vsi->type) {
case I40E_VSI_MAIN:
if (i == 0)
qcount = pf->rss_size;
else
qcount = pf->num_tc_qps;
vsi->tc_config.tc_info[i].qcount = qcount;
break;
case I40E_VSI_FDIR:
case I40E_VSI_SRIOV:
case I40E_VSI_VMDQ2:
default:
qcount = vsi->alloc_queue_pairs;
vsi->tc_config.tc_info[i].qcount = qcount;
WARN_ON(i != 0);
break;
}
/* find the power-of-2 of the number of queue pairs */
num_qps = vsi->tc_config.tc_info[i].qcount;
pow = 0;
while (num_qps &&
((1 << pow) < vsi->tc_config.tc_info[i].qcount)) {
pow++;
num_qps >>= 1;
}
vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
qmap =
(offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
(pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
offset += vsi->tc_config.tc_info[i].qcount;
} else {
/* TC is not enabled so set the offset to
* default queue and allocate one queue
* for the given TC.
*/
vsi->tc_config.tc_info[i].qoffset = 0;
vsi->tc_config.tc_info[i].qcount = 1;
vsi->tc_config.tc_info[i].netdev_tc = 0;
qmap = 0;
}
ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
}
/* Set actual Tx/Rx queue pairs */
vsi->num_queue_pairs = offset;
/* Scheduler section valid can only be set for ADD VSI */
if (is_add) {
sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
ctxt->info.up_enable_bits = enabled_tc;
}
if (vsi->type == I40E_VSI_SRIOV) {
ctxt->info.mapping_flags |=
cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
for (i = 0; i < vsi->num_queue_pairs; i++)
ctxt->info.queue_mapping[i] =
cpu_to_le16(vsi->base_queue + i);
} else {
ctxt->info.mapping_flags |=
cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
}
ctxt->info.valid_sections |= cpu_to_le16(sections);
}
/**
* i40e_set_rx_mode - NDO callback to set the netdev filters
* @netdev: network interface device structure
**/
static void i40e_set_rx_mode(struct net_device *netdev)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_mac_filter *f, *ftmp;
struct i40e_vsi *vsi = np->vsi;
struct netdev_hw_addr *uca;
struct netdev_hw_addr *mca;
struct netdev_hw_addr *ha;
/* add addr if not already in the filter list */
netdev_for_each_uc_addr(uca, netdev) {
if (!i40e_find_mac(vsi, uca->addr, false, true)) {
if (i40e_is_vsi_in_vlan(vsi))
i40e_put_mac_in_vlan(vsi, uca->addr,
false, true);
else
i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
false, true);
}
}
netdev_for_each_mc_addr(mca, netdev) {
if (!i40e_find_mac(vsi, mca->addr, false, true)) {
if (i40e_is_vsi_in_vlan(vsi))
i40e_put_mac_in_vlan(vsi, mca->addr,
false, true);
else
i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
false, true);
}
}
/* remove filter if not in netdev list */
list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
bool found = false;
if (!f->is_netdev)
continue;
if (is_multicast_ether_addr(f->macaddr)) {
netdev_for_each_mc_addr(mca, netdev) {
if (ether_addr_equal(mca->addr, f->macaddr)) {
found = true;
break;
}
}
} else {
netdev_for_each_uc_addr(uca, netdev) {
if (ether_addr_equal(uca->addr, f->macaddr)) {
found = true;
break;
}
}
for_each_dev_addr(netdev, ha) {
if (ether_addr_equal(ha->addr, f->macaddr)) {
found = true;
break;
}
}
}
if (!found)
i40e_del_filter(
vsi, f->macaddr, I40E_VLAN_ANY, false, true);
}
/* check for other flag changes */
if (vsi->current_netdev_flags != vsi->netdev->flags) {
vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
}
}
/**
* i40e_sync_vsi_filters - Update the VSI filter list to the HW
* @vsi: ptr to the VSI
*
* Push any outstanding VSI filter changes through the AdminQ.
*
* Returns 0 or error value
**/
int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
{
struct i40e_mac_filter *f, *ftmp;
bool promisc_forced_on = false;
bool add_happened = false;
int filter_list_len = 0;
u32 changed_flags = 0;
i40e_status aq_ret = 0;
struct i40e_pf *pf;
int num_add = 0;
int num_del = 0;
u16 cmd_flags;
/* empty array typed pointers, kcalloc later */
struct i40e_aqc_add_macvlan_element_data *add_list;
struct i40e_aqc_remove_macvlan_element_data *del_list;
while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
usleep_range(1000, 2000);
pf = vsi->back;
if (vsi->netdev) {
changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
vsi->current_netdev_flags = vsi->netdev->flags;
}
if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
filter_list_len = pf->hw.aq.asq_buf_size /
sizeof(struct i40e_aqc_remove_macvlan_element_data);
del_list = kcalloc(filter_list_len,
sizeof(struct i40e_aqc_remove_macvlan_element_data),
GFP_KERNEL);
if (!del_list)
return -ENOMEM;
list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
if (!f->changed)
continue;
if (f->counter != 0)
continue;
f->changed = false;
cmd_flags = 0;
/* add to delete list */
memcpy(del_list[num_del].mac_addr,
f->macaddr, ETH_ALEN);
del_list[num_del].vlan_tag =
cpu_to_le16((u16)(f->vlan ==
I40E_VLAN_ANY ? 0 : f->vlan));
/* vlan0 as wild card to allow packets from all vlans */
if (f->vlan == I40E_VLAN_ANY ||
(vsi->netdev && !(vsi->netdev->features &
NETIF_F_HW_VLAN_CTAG_FILTER)))
cmd_flags |= I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
del_list[num_del].flags = cmd_flags;
num_del++;
/* unlink from filter list */
list_del(&f->list);
kfree(f);
/* flush a full buffer */
if (num_del == filter_list_len) {
aq_ret = i40e_aq_remove_macvlan(&pf->hw,
vsi->seid, del_list, num_del,
NULL);
num_del = 0;
memset(del_list, 0, sizeof(*del_list));
if (aq_ret)
dev_info(&pf->pdev->dev,
"ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
aq_ret,
pf->hw.aq.asq_last_status);
}
}
if (num_del) {
aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
del_list, num_del, NULL);
num_del = 0;
if (aq_ret)
dev_info(&pf->pdev->dev,
"ignoring delete macvlan error, err %d, aq_err %d\n",
aq_ret, pf->hw.aq.asq_last_status);
}
kfree(del_list);
del_list = NULL;
/* do all the adds now */
filter_list_len = pf->hw.aq.asq_buf_size /
sizeof(struct i40e_aqc_add_macvlan_element_data),
add_list = kcalloc(filter_list_len,
sizeof(struct i40e_aqc_add_macvlan_element_data),
GFP_KERNEL);
if (!add_list)
return -ENOMEM;
list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
if (!f->changed)
continue;
if (f->counter == 0)
continue;
f->changed = false;
add_happened = true;
cmd_flags = 0;
/* add to add array */
memcpy(add_list[num_add].mac_addr,
f->macaddr, ETH_ALEN);
add_list[num_add].vlan_tag =
cpu_to_le16(
(u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
add_list[num_add].queue_number = 0;
cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
/* vlan0 as wild card to allow packets from all vlans */
if (f->vlan == I40E_VLAN_ANY || (vsi->netdev &&
!(vsi->netdev->features &
NETIF_F_HW_VLAN_CTAG_FILTER)))
cmd_flags |= I40E_AQC_MACVLAN_ADD_IGNORE_VLAN;
add_list[num_add].flags = cpu_to_le16(cmd_flags);
num_add++;
/* flush a full buffer */
if (num_add == filter_list_len) {
aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
add_list, num_add,
NULL);
num_add = 0;
if (aq_ret)
break;
memset(add_list, 0, sizeof(*add_list));
}
}
if (num_add) {
aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
add_list, num_add, NULL);
num_add = 0;
}
kfree(add_list);
add_list = NULL;
if (add_happened && (!aq_ret)) {
/* do nothing */;
} else if (add_happened && (aq_ret)) {
dev_info(&pf->pdev->dev,
"add filter failed, err %d, aq_err %d\n",
aq_ret, pf->hw.aq.asq_last_status);
if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
!test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
&vsi->state)) {
promisc_forced_on = true;
set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
&vsi->state);
dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
}
}
}
/* check for changes in promiscuous modes */
if (changed_flags & IFF_ALLMULTI) {
bool cur_multipromisc;
cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
vsi->seid,
cur_multipromisc,
NULL);
if (aq_ret)
dev_info(&pf->pdev->dev,
"set multi promisc failed, err %d, aq_err %d\n",
aq_ret, pf->hw.aq.asq_last_status);
}
if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
bool cur_promisc;
cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
&vsi->state));
aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
vsi->seid,
cur_promisc, NULL);
if (aq_ret)
dev_info(&pf->pdev->dev,
"set uni promisc failed, err %d, aq_err %d\n",
aq_ret, pf->hw.aq.asq_last_status);
}
clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
return 0;
}
/**
* i40e_sync_filters_subtask - Sync the VSI filter list with HW
* @pf: board private structure
**/
static void i40e_sync_filters_subtask(struct i40e_pf *pf)
{
int v;
if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
return;
pf->flags &= ~I40E_FLAG_FILTER_SYNC;
for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
if (pf->vsi[v] &&
(pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
i40e_sync_vsi_filters(pf->vsi[v]);
}
}
/**
* i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
* @netdev: network interface device structure
* @new_mtu: new value for maximum frame size
*
* Returns 0 on success, negative on failure
**/
static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
struct i40e_vsi *vsi = np->vsi;
/* MTU < 68 is an error and causes problems on some kernels */
if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
return -EINVAL;
netdev_info(netdev, "changing MTU from %d to %d\n",
netdev->mtu, new_mtu);
netdev->mtu = new_mtu;
if (netif_running(netdev))
i40e_vsi_reinit_locked(vsi);
return 0;
}
/**
* i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
* @vsi: the vsi being adjusted
**/
void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
{
struct i40e_vsi_context ctxt;
i40e_status ret;
if ((vsi->info.valid_sections &
cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
return; /* already enabled */
vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
ctxt.seid = vsi->seid;
memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
if (ret) {
dev_info(&vsi->back->pdev->dev,
"%s: update vsi failed, aq_err=%d\n",
__func__, vsi->back->hw.aq.asq_last_status);
}
}
/**
* i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
* @vsi: the vsi being adjusted
**/
void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
{
struct i40e_vsi_context ctxt;
i40e_status ret;
if ((vsi->info.valid_sections &
cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
I40E_AQ_VSI_PVLAN_EMOD_MASK))
return; /* already disabled */
vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
ctxt.seid = vsi->seid;
memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
if (ret) {
dev_info(&vsi->back->pdev->dev,
"%s: update vsi failed, aq_err=%d\n",
__func__, vsi->back->hw.aq.asq_last_status);
}
}
/**
* i40e_vlan_rx_register - Setup or shutdown vlan offload
* @netdev: network interface to be adjusted
* @features: netdev features to test if VLAN offload is enabled or not
**/
static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
if (features & NETIF_F_HW_VLAN_CTAG_RX)
i40e_vlan_stripping_enable(vsi);
else
i40e_vlan_stripping_disable(vsi);
}
/**
* i40e_vsi_add_vlan - Add vsi membership for given vlan
* @vsi: the vsi being configured
* @vid: vlan id to be added (0 = untagged only , -1 = any)
**/
int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
{
struct i40e_mac_filter *f, *add_f;
bool is_netdev, is_vf;
int ret;
is_vf = (vsi->type == I40E_VSI_SRIOV);
is_netdev = !!(vsi->netdev);
if (is_netdev) {
add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
is_vf, is_netdev);
if (!add_f) {
dev_info(&vsi->back->pdev->dev,
"Could not add vlan filter %d for %pM\n",
vid, vsi->netdev->dev_addr);
return -ENOMEM;
}
}
list_for_each_entry(f, &vsi->mac_filter_list, list) {
add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
if (!add_f) {
dev_info(&vsi->back->pdev->dev,
"Could not add vlan filter %d for %pM\n",
vid, f->macaddr);
return -ENOMEM;
}
}
ret = i40e_sync_vsi_filters(vsi);
if (ret) {
dev_info(&vsi->back->pdev->dev,
"Could not sync filters for vid %d\n", vid);
return ret;
}
/* Now if we add a vlan tag, make sure to check if it is the first
* tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
* with 0, so we now accept untagged and specified tagged traffic
* (and not any taged and untagged)
*/
if (vid > 0) {
if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
I40E_VLAN_ANY,
is_vf, is_netdev)) {
i40e_del_filter(vsi, vsi->netdev->dev_addr,
I40E_VLAN_ANY, is_vf, is_netdev);
add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
is_vf, is_netdev);
if (!add_f) {
dev_info(&vsi->back->pdev->dev,
"Could not add filter 0 for %pM\n",
vsi->netdev->dev_addr);
return -ENOMEM;
}
}
list_for_each_entry(f, &vsi->mac_filter_list, list) {
if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
is_vf, is_netdev)) {
i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
is_vf, is_netdev);
add_f = i40e_add_filter(vsi, f->macaddr,
0, is_vf, is_netdev);
if (!add_f) {
dev_info(&vsi->back->pdev->dev,
"Could not add filter 0 for %pM\n",
f->macaddr);
return -ENOMEM;
}
}
}
ret = i40e_sync_vsi_filters(vsi);
}
return ret;
}
/**
* i40e_vsi_kill_vlan - Remove vsi membership for given vlan
* @vsi: the vsi being configured
* @vid: vlan id to be removed (0 = untagged only , -1 = any)
*
* Return: 0 on success or negative otherwise
**/
int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
{
struct net_device *netdev = vsi->netdev;
struct i40e_mac_filter *f, *add_f;
bool is_vf, is_netdev;
int filter_count = 0;
int ret;
is_vf = (vsi->type == I40E_VSI_SRIOV);
is_netdev = !!(netdev);
if (is_netdev)
i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
list_for_each_entry(f, &vsi->mac_filter_list, list)
i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
ret = i40e_sync_vsi_filters(vsi);
if (ret) {
dev_info(&vsi->back->pdev->dev, "Could not sync filters\n");
return ret;
}
/* go through all the filters for this VSI and if there is only
* vid == 0 it means there are no other filters, so vid 0 must
* be replaced with -1. This signifies that we should from now
* on accept any traffic (with any tag present, or untagged)
*/
list_for_each_entry(f, &vsi->mac_filter_list, list) {
if (is_netdev) {
if (f->vlan &&
ether_addr_equal(netdev->dev_addr, f->macaddr))
filter_count++;
}
if (f->vlan)
filter_count++;
}
if (!filter_count && is_netdev) {
i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
is_vf, is_netdev);
if (!f) {
dev_info(&vsi->back->pdev->dev,
"Could not add filter %d for %pM\n",
I40E_VLAN_ANY, netdev->dev_addr);
return -ENOMEM;
}
}
if (!filter_count) {
list_for_each_entry(f, &vsi->mac_filter_list, list) {
i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
is_vf, is_netdev);
if (!add_f) {
dev_info(&vsi->back->pdev->dev,
"Could not add filter %d for %pM\n",
I40E_VLAN_ANY, f->macaddr);
return -ENOMEM;
}
}
}
return i40e_sync_vsi_filters(vsi);
}
/**
* i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
* @netdev: network interface to be adjusted
* @vid: vlan id to be added
*
* net_device_ops implementation for adding vlan ids
**/
static int i40e_vlan_rx_add_vid(struct net_device *netdev,
__always_unused __be16 proto, u16 vid)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
int ret = 0;
if (vid > 4095)
return -EINVAL;
netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
/* If the network stack called us with vid = 0, we should
* indicate to i40e_vsi_add_vlan() that we want to receive
* any traffic (i.e. with any vlan tag, or untagged)
*/
ret = i40e_vsi_add_vlan(vsi, vid ? vid : I40E_VLAN_ANY);
if (!ret && (vid < VLAN_N_VID))
set_bit(vid, vsi->active_vlans);
return ret;
}
/**
* i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
* @netdev: network interface to be adjusted
* @vid: vlan id to be removed
*
* net_device_ops implementation for adding vlan ids
**/
static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
__always_unused __be16 proto, u16 vid)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
/* return code is ignored as there is nothing a user
* can do about failure to remove and a log message was
* already printed from the other function
*/
i40e_vsi_kill_vlan(vsi, vid);
clear_bit(vid, vsi->active_vlans);
return 0;
}
/**
* i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
* @vsi: the vsi being brought back up
**/
static void i40e_restore_vlan(struct i40e_vsi *vsi)
{
u16 vid;
if (!vsi->netdev)
return;
i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
vid);
}
/**
* i40e_vsi_add_pvid - Add pvid for the VSI
* @vsi: the vsi being adjusted
* @vid: the vlan id to set as a PVID
**/
int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
{
struct i40e_vsi_context ctxt;
i40e_status aq_ret;
vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
vsi->info.pvid = cpu_to_le16(vid);
vsi->info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_INSERT_PVID;
vsi->info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_UNTAGGED;
ctxt.seid = vsi->seid;
memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
if (aq_ret) {
dev_info(&vsi->back->pdev->dev,
"%s: update vsi failed, aq_err=%d\n",
__func__, vsi->back->hw.aq.asq_last_status);
return -ENOENT;
}
return 0;
}
/**
* i40e_vsi_remove_pvid - Remove the pvid from the VSI
* @vsi: the vsi being adjusted
*
* Just use the vlan_rx_register() service to put it back to normal
**/
void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
{
vsi->info.pvid = 0;
i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
}
/**
* i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
* @vsi: ptr to the VSI
*
* If this function returns with an error, then it's possible one or
* more of the rings is populated (while the rest are not). It is the
* callers duty to clean those orphaned rings.
*
* Return 0 on success, negative on failure
**/
static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
{
int i, err = 0;
for (i = 0; i < vsi->num_queue_pairs && !err; i++)
err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
return err;
}
/**
* i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
* @vsi: ptr to the VSI
*
* Free VSI's transmit software resources
**/
static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
{
int i;
for (i = 0; i < vsi->num_queue_pairs; i++)
if (vsi->tx_rings[i]->desc)
i40e_free_tx_resources(vsi->tx_rings[i]);
}
/**
* i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
* @vsi: ptr to the VSI
*
* If this function returns with an error, then it's possible one or
* more of the rings is populated (while the rest are not). It is the
* callers duty to clean those orphaned rings.
*
* Return 0 on success, negative on failure
**/
static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
{
int i, err = 0;
for (i = 0; i < vsi->num_queue_pairs && !err; i++)
err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
return err;
}
/**
* i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
* @vsi: ptr to the VSI
*
* Free all receive software resources
**/
static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
{
int i;
for (i = 0; i < vsi->num_queue_pairs; i++)
if (vsi->rx_rings[i]->desc)
i40e_free_rx_resources(vsi->rx_rings[i]);
}
/**
* i40e_configure_tx_ring - Configure a transmit ring context and rest
* @ring: The Tx ring to configure
*
* Configure the Tx descriptor ring in the HMC context.
**/
static int i40e_configure_tx_ring(struct i40e_ring *ring)
{
struct i40e_vsi *vsi = ring->vsi;
u16 pf_q = vsi->base_queue + ring->queue_index;
struct i40e_hw *hw = &vsi->back->hw;
struct i40e_hmc_obj_txq tx_ctx;
i40e_status err = 0;
u32 qtx_ctl = 0;
/* some ATR related tx ring init */
if (vsi->back->flags & I40E_FLAG_FDIR_ATR_ENABLED) {
ring->atr_sample_rate = vsi->back->atr_sample_rate;
ring->atr_count = 0;
} else {
ring->atr_sample_rate = 0;
}
/* initialize XPS */
if (ring->q_vector && ring->netdev &&
!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
netif_set_xps_queue(ring->netdev,
&ring->q_vector->affinity_mask,
ring->queue_index);
/* clear the context structure first */
memset(&tx_ctx, 0, sizeof(tx_ctx));
tx_ctx.new_context = 1;
tx_ctx.base = (ring->dma / 128);
tx_ctx.qlen = ring->count;
tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FDIR_ENABLED |
I40E_FLAG_FDIR_ATR_ENABLED));
/* As part of VSI creation/update, FW allocates certain
* Tx arbitration queue sets for each TC enabled for
* the VSI. The FW returns the handles to these queue
* sets as part of the response buffer to Add VSI,
* Update VSI, etc. AQ commands. It is expected that
* these queue set handles be associated with the Tx
* queues by the driver as part of the TX queue context
* initialization. This has to be done regardless of
* DCB as by default everything is mapped to TC0.
*/
tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
tx_ctx.rdylist_act = 0;
/* clear the context in the HMC */
err = i40e_clear_lan_tx_queue_context(hw, pf_q);
if (err) {
dev_info(&vsi->back->pdev->dev,
"Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
ring->queue_index, pf_q, err);
return -ENOMEM;
}
/* set the context in the HMC */
err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
if (err) {
dev_info(&vsi->back->pdev->dev,
"Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
ring->queue_index, pf_q, err);
return -ENOMEM;
}
/* Now associate this queue with this PCI function */
qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
I40E_QTX_CTL_PF_INDX_MASK);
wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
i40e_flush(hw);
clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
/* cache tail off for easier writes later */
ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
return 0;
}
/**
* i40e_configure_rx_ring - Configure a receive ring context
* @ring: The Rx ring to configure
*
* Configure the Rx descriptor ring in the HMC context.
**/
static int i40e_configure_rx_ring(struct i40e_ring *ring)
{
struct i40e_vsi *vsi = ring->vsi;
u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
u16 pf_q = vsi->base_queue + ring->queue_index;
struct i40e_hw *hw = &vsi->back->hw;
struct i40e_hmc_obj_rxq rx_ctx;
i40e_status err = 0;
ring->state = 0;
/* clear the context structure first */
memset(&rx_ctx, 0, sizeof(rx_ctx));
ring->rx_buf_len = vsi->rx_buf_len;
ring->rx_hdr_len = vsi->rx_hdr_len;
rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
rx_ctx.base = (ring->dma / 128);
rx_ctx.qlen = ring->count;
if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
set_ring_16byte_desc_enabled(ring);
rx_ctx.dsize = 0;
} else {
rx_ctx.dsize = 1;
}
rx_ctx.dtype = vsi->dtype;
if (vsi->dtype) {
set_ring_ps_enabled(ring);
rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 |
I40E_RX_SPLIT_IP |
I40E_RX_SPLIT_TCP_UDP |
I40E_RX_SPLIT_SCTP;
} else {
rx_ctx.hsplit_0 = 0;
}
rx_ctx.rxmax = min_t(u16, vsi->max_frame,
(chain_len * ring->rx_buf_len));
rx_ctx.tphrdesc_ena = 1;
rx_ctx.tphwdesc_ena = 1;
rx_ctx.tphdata_ena = 1;
rx_ctx.tphhead_ena = 1;
if (hw->revision_id == 0)
rx_ctx.lrxqthresh = 0;
else
rx_ctx.lrxqthresh = 2;
rx_ctx.crcstrip = 1;
rx_ctx.l2tsel = 1;
rx_ctx.showiv = 1;
/* clear the context in the HMC */
err = i40e_clear_lan_rx_queue_context(hw, pf_q);
if (err) {
dev_info(&vsi->back->pdev->dev,
"Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
ring->queue_index, pf_q, err);
return -ENOMEM;
}
/* set the context in the HMC */
err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
if (err) {
dev_info(&vsi->back->pdev->dev,
"Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
ring->queue_index, pf_q, err);
return -ENOMEM;
}
/* cache tail for quicker writes, and clear the reg before use */
ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
writel(0, ring->tail);
i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
return 0;
}
/**
* i40e_vsi_configure_tx - Configure the VSI for Tx
* @vsi: VSI structure describing this set of rings and resources
*
* Configure the Tx VSI for operation.
**/
static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
{
int err = 0;
u16 i;
for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
err = i40e_configure_tx_ring(vsi->tx_rings[i]);
return err;
}
/**
* i40e_vsi_configure_rx - Configure the VSI for Rx
* @vsi: the VSI being configured
*
* Configure the Rx VSI for operation.
**/
static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
{
int err = 0;
u16 i;
if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
+ ETH_FCS_LEN + VLAN_HLEN;
else
vsi->max_frame = I40E_RXBUFFER_2048;
/* figure out correct receive buffer length */
switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
I40E_FLAG_RX_PS_ENABLED)) {
case I40E_FLAG_RX_1BUF_ENABLED:
vsi->rx_hdr_len = 0;
vsi->rx_buf_len = vsi->max_frame;
vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
break;
case I40E_FLAG_RX_PS_ENABLED:
vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
vsi->rx_buf_len = I40E_RXBUFFER_2048;
vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
break;
default:
vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
vsi->rx_buf_len = I40E_RXBUFFER_2048;
vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
break;
}
/* round up for the chip's needs */
vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
(1 << I40E_RXQ_CTX_HBUFF_SHIFT));
vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
(1 << I40E_RXQ_CTX_DBUFF_SHIFT));
/* set up individual rings */
for (i = 0; i < vsi->num_queue_pairs && !err; i++)
err = i40e_configure_rx_ring(vsi->rx_rings[i]);
return err;
}
/**
* i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
* @vsi: ptr to the VSI
**/
static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
{
u16 qoffset, qcount;
int i, n;
if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED))
return;
for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
if (!(vsi->tc_config.enabled_tc & (1 << n)))
continue;
qoffset = vsi->tc_config.tc_info[n].qoffset;
qcount = vsi->tc_config.tc_info[n].qcount;
for (i = qoffset; i < (qoffset + qcount); i++) {
struct i40e_ring *rx_ring = vsi->rx_rings[i];
struct i40e_ring *tx_ring = vsi->tx_rings[i];
rx_ring->dcb_tc = n;
tx_ring->dcb_tc = n;
}
}
}
/**
* i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
* @vsi: ptr to the VSI
**/
static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
{
if (vsi->netdev)
i40e_set_rx_mode(vsi->netdev);
}
/**
* i40e_vsi_configure - Set up the VSI for action
* @vsi: the VSI being configured
**/
static int i40e_vsi_configure(struct i40e_vsi *vsi)
{
int err;
i40e_set_vsi_rx_mode(vsi);
i40e_restore_vlan(vsi);
i40e_vsi_config_dcb_rings(vsi);
err = i40e_vsi_configure_tx(vsi);
if (!err)
err = i40e_vsi_configure_rx(vsi);
return err;
}
/**
* i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
* @vsi: the VSI being configured
**/
static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
struct i40e_q_vector *q_vector;
struct i40e_hw *hw = &pf->hw;
u16 vector;
int i, q;
u32 val;
u32 qp;
/* The interrupt indexing is offset by 1 in the PFINT_ITRn
* and PFINT_LNKLSTn registers, e.g.:
* PFINT_ITRn[0..n-1] gets msix-1..msix-n (qpair interrupts)
*/
qp = vsi->base_queue;
vector = vsi->base_vector;
for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
q_vector = vsi->q_vectors[i];
q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
q_vector->rx.latency_range = I40E_LOW_LATENCY;
wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
q_vector->rx.itr);
q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
q_vector->tx.latency_range = I40E_LOW_LATENCY;
wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
q_vector->tx.itr);
/* Linked list for the queuepairs assigned to this vector */
wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
for (q = 0; q < q_vector->num_ringpairs; q++) {
val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
(I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
(vector << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
(qp << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
(I40E_QUEUE_TYPE_TX
<< I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
wr32(hw, I40E_QINT_RQCTL(qp), val);
val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
(I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
(vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
((qp+1) << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
(I40E_QUEUE_TYPE_RX
<< I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
/* Terminate the linked list */
if (q == (q_vector->num_ringpairs - 1))
val |= (I40E_QUEUE_END_OF_LIST
<< I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
wr32(hw, I40E_QINT_TQCTL(qp), val);
qp++;
}
}
i40e_flush(hw);
}
/**
* i40e_enable_misc_int_causes - enable the non-queue interrupts
* @hw: ptr to the hardware info
**/
static void i40e_enable_misc_int_causes(struct i40e_hw *hw)
{
u32 val;
/* clear things first */
wr32(hw, I40E_PFINT_ICR0_ENA, 0); /* disable all */
rd32(hw, I40E_PFINT_ICR0); /* read to clear */
val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK |
I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK |
I40E_PFINT_ICR0_ENA_GRST_MASK |
I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
I40E_PFINT_ICR0_ENA_GPIO_MASK |
I40E_PFINT_ICR0_ENA_STORM_DETECT_MASK |
I40E_PFINT_ICR0_ENA_HMC_ERR_MASK |
I40E_PFINT_ICR0_ENA_VFLR_MASK |
I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
wr32(hw, I40E_PFINT_ICR0_ENA, val);
/* SW_ITR_IDX = 0, but don't change INTENA */
wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
/* OTHER_ITR_IDX = 0 */
wr32(hw, I40E_PFINT_STAT_CTL0, 0);
}
/**
* i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
* @vsi: the VSI being configured
**/
static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
{
struct i40e_q_vector *q_vector = vsi->q_vectors[0];
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
u32 val;
/* set the ITR configuration */
q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
q_vector->rx.latency_range = I40E_LOW_LATENCY;
wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
q_vector->tx.latency_range = I40E_LOW_LATENCY;
wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
i40e_enable_misc_int_causes(hw);
/* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
wr32(hw, I40E_PFINT_LNKLST0, 0);
/* Associate the queue pair to the vector and enable the q int */
val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
(I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
(I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
wr32(hw, I40E_QINT_RQCTL(0), val);
val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
(I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
(I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
wr32(hw, I40E_QINT_TQCTL(0), val);
i40e_flush(hw);
}
/**
* i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
* @pf: board private structure
**/
void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
{
struct i40e_hw *hw = &pf->hw;
u32 val;
val = I40E_PFINT_DYN_CTL0_INTENA_MASK |
I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
(I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
wr32(hw, I40E_PFINT_DYN_CTL0, val);
i40e_flush(hw);
}
/**
* i40e_irq_dynamic_enable - Enable default interrupt generation settings
* @vsi: pointer to a vsi
* @vector: enable a particular Hw Interrupt vector
**/
void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
{
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
u32 val;
val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
(I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
/* skip the flush */
}
/**
* i40e_msix_clean_rings - MSIX mode Interrupt Handler
* @irq: interrupt number
* @data: pointer to a q_vector
**/
static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
{
struct i40e_q_vector *q_vector = data;
if (!q_vector->tx.ring && !q_vector->rx.ring)
return IRQ_HANDLED;
napi_schedule(&q_vector->napi);
return IRQ_HANDLED;
}
/**
* i40e_fdir_clean_rings - Interrupt Handler for FDIR rings
* @irq: interrupt number
* @data: pointer to a q_vector
**/
static irqreturn_t i40e_fdir_clean_rings(int irq, void *data)
{
struct i40e_q_vector *q_vector = data;
if (!q_vector->tx.ring && !q_vector->rx.ring)
return IRQ_HANDLED;
pr_info("fdir ring cleaning needed\n");
return IRQ_HANDLED;
}
/**
* i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
* @vsi: the VSI being configured
* @basename: name for the vector
*
* Allocates MSI-X vectors and requests interrupts from the kernel.
**/
static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
{
int q_vectors = vsi->num_q_vectors;
struct i40e_pf *pf = vsi->back;
int base = vsi->base_vector;
int rx_int_idx = 0;
int tx_int_idx = 0;
int vector, err;
for (vector = 0; vector < q_vectors; vector++) {
struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
if (q_vector->tx.ring && q_vector->rx.ring) {
snprintf(q_vector->name, sizeof(q_vector->name) - 1,
"%s-%s-%d", basename, "TxRx", rx_int_idx++);
tx_int_idx++;
} else if (q_vector->rx.ring) {
snprintf(q_vector->name, sizeof(q_vector->name) - 1,
"%s-%s-%d", basename, "rx", rx_int_idx++);
} else if (q_vector->tx.ring) {
snprintf(q_vector->name, sizeof(q_vector->name) - 1,
"%s-%s-%d", basename, "tx", tx_int_idx++);
} else {
/* skip this unused q_vector */
continue;
}
err = request_irq(pf->msix_entries[base + vector].vector,
vsi->irq_handler,
0,
q_vector->name,
q_vector);
if (err) {
dev_info(&pf->pdev->dev,
"%s: request_irq failed, error: %d\n",
__func__, err);
goto free_queue_irqs;
}
/* assign the mask for this irq */
irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
&q_vector->affinity_mask);
}
return 0;
free_queue_irqs:
while (vector) {
vector--;
irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
NULL);
free_irq(pf->msix_entries[base + vector].vector,
&(vsi->q_vectors[vector]));
}
return err;
}
/**
* i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
* @vsi: the VSI being un-configured
**/
static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
int base = vsi->base_vector;
int i;
for (i = 0; i < vsi->num_queue_pairs; i++) {
wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
}
if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
for (i = vsi->base_vector;
i < (vsi->num_q_vectors + vsi->base_vector); i++)
wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
i40e_flush(hw);
for (i = 0; i < vsi->num_q_vectors; i++)
synchronize_irq(pf->msix_entries[i + base].vector);
} else {
/* Legacy and MSI mode - this stops all interrupt handling */
wr32(hw, I40E_PFINT_ICR0_ENA, 0);
wr32(hw, I40E_PFINT_DYN_CTL0, 0);
i40e_flush(hw);
synchronize_irq(pf->pdev->irq);
}
}
/**
* i40e_vsi_enable_irq - Enable IRQ for the given VSI
* @vsi: the VSI being configured
**/
static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
int i;
if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
for (i = vsi->base_vector;
i < (vsi->num_q_vectors + vsi->base_vector); i++)
i40e_irq_dynamic_enable(vsi, i);
} else {
i40e_irq_dynamic_enable_icr0(pf);
}
i40e_flush(&pf->hw);
return 0;
}
/**
* i40e_stop_misc_vector - Stop the vector that handles non-queue events
* @pf: board private structure
**/
static void i40e_stop_misc_vector(struct i40e_pf *pf)
{
/* Disable ICR 0 */
wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
i40e_flush(&pf->hw);
}
/**
* i40e_intr - MSI/Legacy and non-queue interrupt handler
* @irq: interrupt number
* @data: pointer to a q_vector
*
* This is the handler used for all MSI/Legacy interrupts, and deals
* with both queue and non-queue interrupts. This is also used in
* MSIX mode to handle the non-queue interrupts.
**/
static irqreturn_t i40e_intr(int irq, void *data)
{
struct i40e_pf *pf = (struct i40e_pf *)data;
struct i40e_hw *hw = &pf->hw;
u32 icr0, icr0_remaining;
u32 val, ena_mask;
icr0 = rd32(hw, I40E_PFINT_ICR0);
val = rd32(hw, I40E_PFINT_DYN_CTL0);
val = val | I40E_PFINT_DYN_CTL0_CLEARPBA_MASK;
wr32(hw, I40E_PFINT_DYN_CTL0, val);
/* if sharing a legacy IRQ, we might get called w/o an intr pending */
if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
return IRQ_NONE;
ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
/* if interrupt but no bits showing, must be SWINT */
if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
(icr0 & I40E_PFINT_ICR0_SWINT_MASK))
pf->sw_int_count++;
/* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
/* temporarily disable queue cause for NAPI processing */
u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
wr32(hw, I40E_QINT_RQCTL(0), qval);
qval = rd32(hw, I40E_QINT_TQCTL(0));
qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
wr32(hw, I40E_QINT_TQCTL(0), qval);
if (!test_bit(__I40E_DOWN, &pf->state))
napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
}
if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
}
if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
}
if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
}
if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
val = rd32(hw, I40E_GLGEN_RSTAT);
val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
>> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
if (val == I40E_RESET_CORER)
pf->corer_count++;
else if (val == I40E_RESET_GLOBR)
pf->globr_count++;
else if (val == I40E_RESET_EMPR)
pf->empr_count++;
}
if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
dev_info(&pf->pdev->dev, "HMC error interrupt\n");
}
/* If a critical error is pending we have no choice but to reset the
* device.
* Report and mask out any remaining unexpected interrupts.
*/
icr0_remaining = icr0 & ena_mask;
if (icr0_remaining) {
dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
icr0_remaining);
if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
(icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
(icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK) ||
(icr0_remaining & I40E_PFINT_ICR0_MAL_DETECT_MASK)) {
dev_info(&pf->pdev->dev, "device will be reset\n");
set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
i40e_service_event_schedule(pf);
}
ena_mask &= ~icr0_remaining;
}
/* re-enable interrupt causes */
wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
if (!test_bit(__I40E_DOWN, &pf->state)) {
i40e_service_event_schedule(pf);
i40e_irq_dynamic_enable_icr0(pf);
}
return IRQ_HANDLED;
}
/**
* i40e_map_vector_to_qp - Assigns the queue pair to the vector
* @vsi: the VSI being configured
* @v_idx: vector index
* @qp_idx: queue pair index
**/
static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
{
struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
tx_ring->q_vector = q_vector;
tx_ring->next = q_vector->tx.ring;
q_vector->tx.ring = tx_ring;
q_vector->tx.count++;
rx_ring->q_vector = q_vector;
rx_ring->next = q_vector->rx.ring;
q_vector->rx.ring = rx_ring;
q_vector->rx.count++;
}
/**
* i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
* @vsi: the VSI being configured
*
* This function maps descriptor rings to the queue-specific vectors
* we were allotted through the MSI-X enabling code. Ideally, we'd have
* one vector per queue pair, but on a constrained vector budget, we
* group the queue pairs as "efficiently" as possible.
**/
static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
{
int qp_remaining = vsi->num_queue_pairs;
int q_vectors = vsi->num_q_vectors;
int num_ringpairs;
int v_start = 0;
int qp_idx = 0;
/* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
* group them so there are multiple queues per vector.
*/
for (; v_start < q_vectors && qp_remaining; v_start++) {
struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
q_vector->num_ringpairs = num_ringpairs;
q_vector->rx.count = 0;
q_vector->tx.count = 0;
q_vector->rx.ring = NULL;
q_vector->tx.ring = NULL;
while (num_ringpairs--) {
map_vector_to_qp(vsi, v_start, qp_idx);
qp_idx++;
qp_remaining--;
}
}
}
/**
* i40e_vsi_request_irq - Request IRQ from the OS
* @vsi: the VSI being configured
* @basename: name for the vector
**/
static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
{
struct i40e_pf *pf = vsi->back;
int err;
if (pf->flags & I40E_FLAG_MSIX_ENABLED)
err = i40e_vsi_request_irq_msix(vsi, basename);
else if (pf->flags & I40E_FLAG_MSI_ENABLED)
err = request_irq(pf->pdev->irq, i40e_intr, 0,
pf->misc_int_name, pf);
else
err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
pf->misc_int_name, pf);
if (err)
dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
return err;
}
#ifdef CONFIG_NET_POLL_CONTROLLER
/**
* i40e_netpoll - A Polling 'interrupt'handler
* @netdev: network interface device structure
*
* This is used by netconsole to send skbs without having to re-enable
* interrupts. It's not called while the normal interrupt routine is executing.
**/
static void i40e_netpoll(struct net_device *netdev)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
int i;
/* if interface is down do nothing */
if (test_bit(__I40E_DOWN, &vsi->state))
return;
pf->flags |= I40E_FLAG_IN_NETPOLL;
if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
for (i = 0; i < vsi->num_q_vectors; i++)
i40e_msix_clean_rings(0, vsi->q_vectors[i]);
} else {
i40e_intr(pf->pdev->irq, netdev);
}
pf->flags &= ~I40E_FLAG_IN_NETPOLL;
}
#endif
/**
* i40e_vsi_control_tx - Start or stop a VSI's rings
* @vsi: the VSI being configured
* @enable: start or stop the rings
**/
static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
{
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
int i, j, pf_q;
u32 tx_reg;
pf_q = vsi->base_queue;
for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
j = 1000;
do {
usleep_range(1000, 2000);
tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
} while (j-- && ((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT)
^ (tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT)) & 1);
if (enable) {
/* is STAT set ? */
if ((tx_reg & I40E_QTX_ENA_QENA_STAT_MASK)) {
dev_info(&pf->pdev->dev,
"Tx %d already enabled\n", i);
continue;
}
} else {
/* is !STAT set ? */
if (!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK)) {
dev_info(&pf->pdev->dev,
"Tx %d already disabled\n", i);
continue;
}
}
/* turn on/off the queue */
if (enable)
tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK |
I40E_QTX_ENA_QENA_STAT_MASK;
else
tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
/* wait for the change to finish */
for (j = 0; j < 10; j++) {
tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
if (enable) {
if ((tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
break;
} else {
if (!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
break;
}
udelay(10);
}
if (j >= 10) {
dev_info(&pf->pdev->dev, "Tx ring %d %sable timeout\n",
pf_q, (enable ? "en" : "dis"));
return -ETIMEDOUT;
}
}
if (hw->revision_id == 0)
mdelay(50);
return 0;
}
/**
* i40e_vsi_control_rx - Start or stop a VSI's rings
* @vsi: the VSI being configured
* @enable: start or stop the rings
**/
static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
{
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
int i, j, pf_q;
u32 rx_reg;
pf_q = vsi->base_queue;
for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
j = 1000;
do {
usleep_range(1000, 2000);
rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
} while (j-- && ((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT)
^ (rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT)) & 1);
if (enable) {
/* is STAT set ? */
if ((rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
continue;
} else {
/* is !STAT set ? */
if (!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
continue;
}
/* turn on/off the queue */
if (enable)
rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK |
I40E_QRX_ENA_QENA_STAT_MASK;
else
rx_reg &= ~(I40E_QRX_ENA_QENA_REQ_MASK |
I40E_QRX_ENA_QENA_STAT_MASK);
wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
/* wait for the change to finish */
for (j = 0; j < 10; j++) {
rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
if (enable) {
if ((rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
break;
} else {
if (!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
break;
}
udelay(10);
}
if (j >= 10) {
dev_info(&pf->pdev->dev, "Rx ring %d %sable timeout\n",
pf_q, (enable ? "en" : "dis"));
return -ETIMEDOUT;
}
}
return 0;
}
/**
* i40e_vsi_control_rings - Start or stop a VSI's rings
* @vsi: the VSI being configured
* @enable: start or stop the rings
**/
static int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
{
int ret;
/* do rx first for enable and last for disable */
if (request) {
ret = i40e_vsi_control_rx(vsi, request);
if (ret)
return ret;
ret = i40e_vsi_control_tx(vsi, request);
} else {
ret = i40e_vsi_control_tx(vsi, request);
if (ret)
return ret;
ret = i40e_vsi_control_rx(vsi, request);
}
return ret;
}
/**
* i40e_vsi_free_irq - Free the irq association with the OS
* @vsi: the VSI being configured
**/
static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
int base = vsi->base_vector;
u32 val, qp;
int i;
if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
if (!vsi->q_vectors)
return;
for (i = 0; i < vsi->num_q_vectors; i++) {
u16 vector = i + base;
/* free only the irqs that were actually requested */
if (vsi->q_vectors[i]->num_ringpairs == 0)
continue;
/* clear the affinity_mask in the IRQ descriptor */
irq_set_affinity_hint(pf->msix_entries[vector].vector,
NULL);
free_irq(pf->msix_entries[vector].vector,
vsi->q_vectors[i]);
/* Tear down the interrupt queue link list
*
* We know that they come in pairs and always
* the Rx first, then the Tx. To clear the
* link list, stick the EOL value into the
* next_q field of the registers.
*/
val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
>> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
val |= I40E_QUEUE_END_OF_LIST
<< I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
while (qp != I40E_QUEUE_END_OF_LIST) {
u32 next;
val = rd32(hw, I40E_QINT_RQCTL(qp));
val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK |
I40E_QINT_RQCTL_MSIX0_INDX_MASK |
I40E_QINT_RQCTL_CAUSE_ENA_MASK |
I40E_QINT_RQCTL_INTEVENT_MASK);
val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
wr32(hw, I40E_QINT_RQCTL(qp), val);
val = rd32(hw, I40E_QINT_TQCTL(qp));
next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
>> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK |
I40E_QINT_TQCTL_MSIX0_INDX_MASK |
I40E_QINT_TQCTL_CAUSE_ENA_MASK |
I40E_QINT_TQCTL_INTEVENT_MASK);
val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
wr32(hw, I40E_QINT_TQCTL(qp), val);
qp = next;
}
}
} else {
free_irq(pf->pdev->irq, pf);
val = rd32(hw, I40E_PFINT_LNKLST0);
qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
>> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
val |= I40E_QUEUE_END_OF_LIST
<< I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
wr32(hw, I40E_PFINT_LNKLST0, val);
val = rd32(hw, I40E_QINT_RQCTL(qp));
val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK |
I40E_QINT_RQCTL_MSIX0_INDX_MASK |
I40E_QINT_RQCTL_CAUSE_ENA_MASK |
I40E_QINT_RQCTL_INTEVENT_MASK);
val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
wr32(hw, I40E_QINT_RQCTL(qp), val);
val = rd32(hw, I40E_QINT_TQCTL(qp));
val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK |
I40E_QINT_TQCTL_MSIX0_INDX_MASK |
I40E_QINT_TQCTL_CAUSE_ENA_MASK |
I40E_QINT_TQCTL_INTEVENT_MASK);
val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
wr32(hw, I40E_QINT_TQCTL(qp), val);
}
}
/**
* i40e_free_q_vector - Free memory allocated for specific interrupt vector
* @vsi: the VSI being configured
* @v_idx: Index of vector to be freed
*
* This function frees the memory allocated to the q_vector. In addition if
* NAPI is enabled it will delete any references to the NAPI struct prior
* to freeing the q_vector.
**/
static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
{
struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
struct i40e_ring *ring;
if (!q_vector)
return;
/* disassociate q_vector from rings */
i40e_for_each_ring(ring, q_vector->tx)
ring->q_vector = NULL;
i40e_for_each_ring(ring, q_vector->rx)
ring->q_vector = NULL;
/* only VSI w/ an associated netdev is set up w/ NAPI */
if (vsi->netdev)
netif_napi_del(&q_vector->napi);
vsi->q_vectors[v_idx] = NULL;
kfree_rcu(q_vector, rcu);
}
/**
* i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
* @vsi: the VSI being un-configured
*
* This frees the memory allocated to the q_vectors and
* deletes references to the NAPI struct.
**/
static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
{
int v_idx;
for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
i40e_free_q_vector(vsi, v_idx);
}
/**
* i40e_reset_interrupt_capability - Disable interrupt setup in OS
* @pf: board private structure
**/
static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
{
/* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
pci_disable_msix(pf->pdev);
kfree(pf->msix_entries);
pf->msix_entries = NULL;
} else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
pci_disable_msi(pf->pdev);
}
pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
}
/**
* i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
* @pf: board private structure
*
* We go through and clear interrupt specific resources and reset the structure
* to pre-load conditions
**/
static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
{
int i;
i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
if (pf->vsi[i])
i40e_vsi_free_q_vectors(pf->vsi[i]);
i40e_reset_interrupt_capability(pf);
}
/**
* i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
* @vsi: the VSI being configured
**/
static void i40e_napi_enable_all(struct i40e_vsi *vsi)
{
int q_idx;
if (!vsi->netdev)
return;
for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
napi_enable(&vsi->q_vectors[q_idx]->napi);
}
/**
* i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
* @vsi: the VSI being configured
**/
static void i40e_napi_disable_all(struct i40e_vsi *vsi)
{
int q_idx;
if (!vsi->netdev)
return;
for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
napi_disable(&vsi->q_vectors[q_idx]->napi);
}
/**
* i40e_quiesce_vsi - Pause a given VSI
* @vsi: the VSI being paused
**/
static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
{
if (test_bit(__I40E_DOWN, &vsi->state))
return;
set_bit(__I40E_NEEDS_RESTART, &vsi->state);
if (vsi->netdev && netif_running(vsi->netdev)) {
vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
} else {
set_bit(__I40E_DOWN, &vsi->state);
i40e_down(vsi);
}
}
/**
* i40e_unquiesce_vsi - Resume a given VSI
* @vsi: the VSI being resumed
**/
static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
{
if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
return;
clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
if (vsi->netdev && netif_running(vsi->netdev))
vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
else
i40e_up(vsi); /* this clears the DOWN bit */
}
/**
* i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
* @pf: the PF
**/
static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
{
int v;
for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
if (pf->vsi[v])
i40e_quiesce_vsi(pf->vsi[v]);
}
}
/**
* i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
* @pf: the PF
**/
static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
{
int v;
for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
if (pf->vsi[v])
i40e_unquiesce_vsi(pf->vsi[v]);
}
}
/**
* i40e_dcb_get_num_tc - Get the number of TCs from DCBx config
* @dcbcfg: the corresponding DCBx configuration structure
*
* Return the number of TCs from given DCBx configuration
**/
static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
{
u8 num_tc = 0;
int i;
/* Scan the ETS Config Priority Table to find
* traffic class enabled for a given priority
* and use the traffic class index to get the
* number of traffic classes enabled
*/
for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
if (dcbcfg->etscfg.prioritytable[i] > num_tc)
num_tc = dcbcfg->etscfg.prioritytable[i];
}
/* Traffic class index starts from zero so
* increment to return the actual count
*/
return num_tc + 1;
}
/**
* i40e_dcb_get_enabled_tc - Get enabled traffic classes
* @dcbcfg: the corresponding DCBx configuration structure
*
* Query the current DCB configuration and return the number of
* traffic classes enabled from the given DCBX config
**/
static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
{
u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
u8 enabled_tc = 1;
u8 i;
for (i = 0; i < num_tc; i++)
enabled_tc |= 1 << i;
return enabled_tc;
}
/**
* i40e_pf_get_num_tc - Get enabled traffic classes for PF
* @pf: PF being queried
*
* Return number of traffic classes enabled for the given PF
**/
static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
{
struct i40e_hw *hw = &pf->hw;
u8 i, enabled_tc;
u8 num_tc = 0;
struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
/* If DCB is not enabled then always in single TC */
if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
return 1;
/* MFP mode return count of enabled TCs for this PF */
if (pf->flags & I40E_FLAG_MFP_ENABLED) {
enabled_tc = pf->hw.func_caps.enabled_tcmap;
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
if (enabled_tc & (1 << i))
num_tc++;
}
return num_tc;
}
/* SFP mode will be enabled for all TCs on port */
return i40e_dcb_get_num_tc(dcbcfg);
}
/**
* i40e_pf_get_default_tc - Get bitmap for first enabled TC
* @pf: PF being queried
*
* Return a bitmap for first enabled traffic class for this PF.
**/
static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
{
u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
u8 i = 0;
if (!enabled_tc)
return 0x1; /* TC0 */
/* Find the first enabled TC */
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
if (enabled_tc & (1 << i))
break;
}
return 1 << i;
}
/**
* i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
* @pf: PF being queried
*
* Return a bitmap for enabled traffic classes for this PF.
**/
static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
{
/* If DCB is not enabled for this PF then just return default TC */
if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
return i40e_pf_get_default_tc(pf);
/* MFP mode will have enabled TCs set by FW */
if (pf->flags & I40E_FLAG_MFP_ENABLED)
return pf->hw.func_caps.enabled_tcmap;
/* SFP mode we want PF to be enabled for all TCs */
return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
}
/**
* i40e_vsi_get_bw_info - Query VSI BW Information
* @vsi: the VSI being queried
*
* Returns 0 on success, negative value on failure
**/
static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
{
struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
i40e_status aq_ret;
u32 tc_bw_max;
int i;
/* Get the VSI level BW configuration */
aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
if (aq_ret) {
dev_info(&pf->pdev->dev,
"couldn't get pf vsi bw config, err %d, aq_err %d\n",
aq_ret, pf->hw.aq.asq_last_status);
return -EINVAL;
}
/* Get the VSI level BW configuration per TC */
aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
NULL);
if (aq_ret) {
dev_info(&pf->pdev->dev,
"couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
aq_ret, pf->hw.aq.asq_last_status);
return -EINVAL;
}
if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
dev_info(&pf->pdev->dev,
"Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
bw_config.tc_valid_bits,
bw_ets_config.tc_valid_bits);
/* Still continuing */
}
vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
vsi->bw_max_quanta = bw_config.max_bw;
tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
(le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
vsi->bw_ets_limit_credits[i] =
le16_to_cpu(bw_ets_config.credits[i]);
/* 3 bits out of 4 for each TC */
vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
}
return 0;
}
/**
* i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
* @vsi: the VSI being configured
* @enabled_tc: TC bitmap
* @bw_credits: BW shared credits per TC
*
* Returns 0 on success, negative value on failure
**/
static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
u8 *bw_share)
{
struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
i40e_status aq_ret;
int i;
bw_data.tc_valid_bits = enabled_tc;
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
bw_data.tc_bw_credits[i] = bw_share[i];
aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
NULL);
if (aq_ret) {
dev_info(&vsi->back->pdev->dev,
"%s: AQ command Config VSI BW allocation per TC failed = %d\n",
__func__, vsi->back->hw.aq.asq_last_status);
return -EINVAL;
}
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
vsi->info.qs_handle[i] = bw_data.qs_handles[i];
return 0;
}
/**
* i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
* @vsi: the VSI being configured
* @enabled_tc: TC map to be enabled
*
**/
static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
{
struct net_device *netdev = vsi->netdev;
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
u8 netdev_tc = 0;
int i;
struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
if (!netdev)
return;
if (!enabled_tc) {
netdev_reset_tc(netdev);
return;
}
/* Set up actual enabled TCs on the VSI */
if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
return;
/* set per TC queues for the VSI */
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
/* Only set TC queues for enabled tcs
*
* e.g. For a VSI that has TC0 and TC3 enabled the
* enabled_tc bitmap would be 0x00001001; the driver
* will set the numtc for netdev as 2 that will be
* referenced by the netdev layer as TC 0 and 1.
*/
if (vsi->tc_config.enabled_tc & (1 << i))
netdev_set_tc_queue(netdev,
vsi->tc_config.tc_info[i].netdev_tc,
vsi->tc_config.tc_info[i].qcount,
vsi->tc_config.tc_info[i].qoffset);
}
/* Assign UP2TC map for the VSI */
for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
/* Get the actual TC# for the UP */
u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
/* Get the mapped netdev TC# for the UP */
netdev_tc = vsi->tc_config.tc_info[ets_tc].netdev_tc;
netdev_set_prio_tc_map(netdev, i, netdev_tc);
}
}
/**
* i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
* @vsi: the VSI being configured
* @ctxt: the ctxt buffer returned from AQ VSI update param command
**/
static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
struct i40e_vsi_context *ctxt)
{
/* copy just the sections touched not the entire info
* since not all sections are valid as returned by
* update vsi params
*/
vsi->info.mapping_flags = ctxt->info.mapping_flags;
memcpy(&vsi->info.queue_mapping,
&ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
sizeof(vsi->info.tc_mapping));
}
/**
* i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
* @vsi: VSI to be configured
* @enabled_tc: TC bitmap
*
* This configures a particular VSI for TCs that are mapped to the
* given TC bitmap. It uses default bandwidth share for TCs across
* VSIs to configure TC for a particular VSI.
*
* NOTE:
* It is expected that the VSI queues have been quisced before calling
* this function.
**/
static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
{
u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
struct i40e_vsi_context ctxt;
int ret = 0;
int i;
/* Check if enabled_tc is same as existing or new TCs */
if (vsi->tc_config.enabled_tc == enabled_tc)
return ret;
/* Enable ETS TCs with equal BW Share for now across all VSIs */
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
if (enabled_tc & (1 << i))
bw_share[i] = 1;
}
ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
if (ret) {
dev_info(&vsi->back->pdev->dev,
"Failed configuring TC map %d for VSI %d\n",
enabled_tc, vsi->seid);
goto out;
}
/* Update Queue Pairs Mapping for currently enabled UPs */
ctxt.seid = vsi->seid;
ctxt.pf_num = vsi->back->hw.pf_id;
ctxt.vf_num = 0;
ctxt.uplink_seid = vsi->uplink_seid;
memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
/* Update the VSI after updating the VSI queue-mapping information */
ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
if (ret) {
dev_info(&vsi->back->pdev->dev,
"update vsi failed, aq_err=%d\n",
vsi->back->hw.aq.asq_last_status);
goto out;
}
/* update the local VSI info with updated queue map */
i40e_vsi_update_queue_map(vsi, &ctxt);
vsi->info.valid_sections = 0;
/* Update current VSI BW information */
ret = i40e_vsi_get_bw_info(vsi);
if (ret) {
dev_info(&vsi->back->pdev->dev,
"Failed updating vsi bw info, aq_err=%d\n",
vsi->back->hw.aq.asq_last_status);
goto out;
}
/* Update the netdev TC setup */
i40e_vsi_config_netdev_tc(vsi, enabled_tc);
out:
return ret;
}
/**
* i40e_up_complete - Finish the last steps of bringing up a connection
* @vsi: the VSI being configured
**/
static int i40e_up_complete(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
int err;
if (pf->flags & I40E_FLAG_MSIX_ENABLED)
i40e_vsi_configure_msix(vsi);
else
i40e_configure_msi_and_legacy(vsi);
/* start rings */
err = i40e_vsi_control_rings(vsi, true);
if (err)
return err;
clear_bit(__I40E_DOWN, &vsi->state);
i40e_napi_enable_all(vsi);
i40e_vsi_enable_irq(vsi);
if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
(vsi->netdev)) {
netdev_info(vsi->netdev, "NIC Link is Up\n");
netif_tx_start_all_queues(vsi->netdev);
netif_carrier_on(vsi->netdev);
} else if (vsi->netdev) {
netdev_info(vsi->netdev, "NIC Link is Down\n");
}
i40e_service_event_schedule(pf);
return 0;
}
/**
* i40e_vsi_reinit_locked - Reset the VSI
* @vsi: the VSI being configured
*
* Rebuild the ring structs after some configuration
* has changed, e.g. MTU size.
**/
static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
WARN_ON(in_interrupt());
while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
usleep_range(1000, 2000);
i40e_down(vsi);
/* Give a VF some time to respond to the reset. The
* two second wait is based upon the watchdog cycle in
* the VF driver.
*/
if (vsi->type == I40E_VSI_SRIOV)
msleep(2000);
i40e_up(vsi);
clear_bit(__I40E_CONFIG_BUSY, &pf->state);
}
/**
* i40e_up - Bring the connection back up after being down
* @vsi: the VSI being configured
**/
int i40e_up(struct i40e_vsi *vsi)
{
int err;
err = i40e_vsi_configure(vsi);
if (!err)
err = i40e_up_complete(vsi);
return err;
}
/**
* i40e_down - Shutdown the connection processing
* @vsi: the VSI being stopped
**/
void i40e_down(struct i40e_vsi *vsi)
{
int i;
/* It is assumed that the caller of this function
* sets the vsi->state __I40E_DOWN bit.
*/
if (vsi->netdev) {
netif_carrier_off(vsi->netdev);
netif_tx_disable(vsi->netdev);
}
i40e_vsi_disable_irq(vsi);
i40e_vsi_control_rings(vsi, false);
i40e_napi_disable_all(vsi);
for (i = 0; i < vsi->num_queue_pairs; i++) {
i40e_clean_tx_ring(vsi->tx_rings[i]);
i40e_clean_rx_ring(vsi->rx_rings[i]);
}
}
/**
* i40e_setup_tc - configure multiple traffic classes
* @netdev: net device to configure
* @tc: number of traffic classes to enable
**/
static int i40e_setup_tc(struct net_device *netdev, u8 tc)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
u8 enabled_tc = 0;
int ret = -EINVAL;
int i;
/* Check if DCB enabled to continue */
if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
netdev_info(netdev, "DCB is not enabled for adapter\n");
goto exit;
}
/* Check if MFP enabled */
if (pf->flags & I40E_FLAG_MFP_ENABLED) {
netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
goto exit;
}
/* Check whether tc count is within enabled limit */
if (tc > i40e_pf_get_num_tc(pf)) {
netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
goto exit;
}
/* Generate TC map for number of tc requested */
for (i = 0; i < tc; i++)
enabled_tc |= (1 << i);
/* Requesting same TC configuration as already enabled */
if (enabled_tc == vsi->tc_config.enabled_tc)
return 0;
/* Quiesce VSI queues */
i40e_quiesce_vsi(vsi);
/* Configure VSI for enabled TCs */
ret = i40e_vsi_config_tc(vsi, enabled_tc);
if (ret) {
netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
vsi->seid);
goto exit;
}
/* Unquiesce VSI */
i40e_unquiesce_vsi(vsi);
exit:
return ret;
}
/**
* i40e_open - Called when a network interface is made active
* @netdev: network interface device structure
*
* The open entry point is called when a network interface is made
* active by the system (IFF_UP). At this point all resources needed
* for transmit and receive operations are allocated, the interrupt
* handler is registered with the OS, the netdev watchdog subtask is
* enabled, and the stack is notified that the interface is ready.
*
* Returns 0 on success, negative value on failure
**/
static int i40e_open(struct net_device *netdev)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
char int_name[IFNAMSIZ];
int err;
/* disallow open during test */
if (test_bit(__I40E_TESTING, &pf->state))
return -EBUSY;
netif_carrier_off(netdev);
/* allocate descriptors */
err = i40e_vsi_setup_tx_resources(vsi);
if (err)
goto err_setup_tx;
err = i40e_vsi_setup_rx_resources(vsi);
if (err)
goto err_setup_rx;
err = i40e_vsi_configure(vsi);
if (err)
goto err_setup_rx;
snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
dev_driver_string(&pf->pdev->dev), netdev->name);
err = i40e_vsi_request_irq(vsi, int_name);
if (err)
goto err_setup_rx;
/* Notify the stack of the actual queue counts. */
err = netif_set_real_num_tx_queues(netdev, pf->num_tx_queues);
if (err)
goto err_set_queues;
err = netif_set_real_num_rx_queues(netdev, pf->num_rx_queues);
if (err)
goto err_set_queues;
err = i40e_up_complete(vsi);
if (err)
goto err_up_complete;
if ((vsi->type == I40E_VSI_MAIN) || (vsi->type == I40E_VSI_VMDQ2)) {
err = i40e_aq_set_vsi_broadcast(&pf->hw, vsi->seid, true, NULL);
if (err)
netdev_info(netdev,
"couldn't set broadcast err %d aq_err %d\n",
err, pf->hw.aq.asq_last_status);
}
#ifdef CONFIG_I40E_VXLAN
vxlan_get_rx_port(netdev);
#endif
return 0;
err_up_complete:
i40e_down(vsi);
err_set_queues:
i40e_vsi_free_irq(vsi);
err_setup_rx:
i40e_vsi_free_rx_resources(vsi);
err_setup_tx:
i40e_vsi_free_tx_resources(vsi);
if (vsi == pf->vsi[pf->lan_vsi])
i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
return err;
}
/**
* i40e_close - Disables a network interface
* @netdev: network interface device structure
*
* The close entry point is called when an interface is de-activated
* by the OS. The hardware is still under the driver's control, but
* this netdev interface is disabled.
*
* Returns 0, this is not allowed to fail
**/
static int i40e_close(struct net_device *netdev)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
if (test_and_set_bit(__I40E_DOWN, &vsi->state))
return 0;
i40e_down(vsi);
i40e_vsi_free_irq(vsi);
i40e_vsi_free_tx_resources(vsi);
i40e_vsi_free_rx_resources(vsi);
return 0;
}
/**
* i40e_do_reset - Start a PF or Core Reset sequence
* @pf: board private structure
* @reset_flags: which reset is requested
*
* The essential difference in resets is that the PF Reset
* doesn't clear the packet buffers, doesn't reset the PE
* firmware, and doesn't bother the other PFs on the chip.
**/
void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
{
u32 val;
WARN_ON(in_interrupt());
/* do the biggest reset indicated */
if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
/* Request a Global Reset
*
* This will start the chip's countdown to the actual full
* chip reset event, and a warning interrupt to be sent
* to all PFs, including the requestor. Our handler
* for the warning interrupt will deal with the shutdown
* and recovery of the switch setup.
*/
dev_info(&pf->pdev->dev, "GlobalR requested\n");
val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
} else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
/* Request a Core Reset
*
* Same as Global Reset, except does *not* include the MAC/PHY
*/
dev_info(&pf->pdev->dev, "CoreR requested\n");
val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
val |= I40E_GLGEN_RTRIG_CORER_MASK;
wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
i40e_flush(&pf->hw);
} else if (reset_flags & (1 << __I40E_EMP_RESET_REQUESTED)) {
/* Request a Firmware Reset
*
* Same as Global reset, plus restarting the
* embedded firmware engine.
*/
/* enable EMP Reset */
val = rd32(&pf->hw, I40E_GLGEN_RSTENA_EMP);
val |= I40E_GLGEN_RSTENA_EMP_EMP_RST_ENA_MASK;
wr32(&pf->hw, I40E_GLGEN_RSTENA_EMP, val);
/* force the reset */
val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
val |= I40E_GLGEN_RTRIG_EMPFWR_MASK;
wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
i40e_flush(&pf->hw);
} else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
/* Request a PF Reset
*
* Resets only the PF-specific registers
*
* This goes directly to the tear-down and rebuild of
* the switch, since we need to do all the recovery as
* for the Core Reset.
*/
dev_info(&pf->pdev->dev, "PFR requested\n");
i40e_handle_reset_warning(pf);
} else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
int v;
/* Find the VSI(s) that requested a re-init */
dev_info(&pf->pdev->dev,
"VSI reinit requested\n");
for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
struct i40e_vsi *vsi = pf->vsi[v];
if (vsi != NULL &&
test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
i40e_vsi_reinit_locked(pf->vsi[v]);
clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
}
}
/* no further action needed, so return now */
return;
} else {
dev_info(&pf->pdev->dev,
"bad reset request 0x%08x\n", reset_flags);
return;
}
}
/**
* i40e_do_reset_safe - Protected reset path for userland calls.
* @pf: board private structure
* @reset_flags: which reset is requested
*
**/
void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
{
rtnl_lock();
i40e_do_reset(pf, reset_flags);
rtnl_unlock();
}
/**
* i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
* @pf: board private structure
* @e: event info posted on ARQ
*
* Handler for LAN Queue Overflow Event generated by the firmware for PF
* and VF queues
**/
static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
struct i40e_arq_event_info *e)
{
struct i40e_aqc_lan_overflow *data =
(struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
u32 queue = le32_to_cpu(data->prtdcb_rupto);
u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
struct i40e_hw *hw = &pf->hw;
struct i40e_vf *vf;
u16 vf_id;
dev_info(&pf->pdev->dev, "%s: Rx Queue Number = %d QTX_CTL=0x%08x\n",
__func__, queue, qtx_ctl);
/* Queue belongs to VF, find the VF and issue VF reset */
if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
>> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
>> I40E_QTX_CTL_VFVM_INDX_SHIFT);
vf_id -= hw->func_caps.vf_base_id;
vf = &pf->vf[vf_id];
i40e_vc_notify_vf_reset(vf);
/* Allow VF to process pending reset notification */
msleep(20);
i40e_reset_vf(vf, false);
}
}
/**
* i40e_service_event_complete - Finish up the service event
* @pf: board private structure
**/
static void i40e_service_event_complete(struct i40e_pf *pf)
{
BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
/* flush memory to make sure state is correct before next watchog */
smp_mb__before_clear_bit();
clear_bit(__I40E_SERVICE_SCHED, &pf->state);
}
/**
* i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
* @pf: board private structure
**/
static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
{
if (!(pf->flags & I40E_FLAG_FDIR_REQUIRES_REINIT))
return;
pf->flags &= ~I40E_FLAG_FDIR_REQUIRES_REINIT;
/* if interface is down do nothing */
if (test_bit(__I40E_DOWN, &pf->state))
return;
}
/**
* i40e_vsi_link_event - notify VSI of a link event
* @vsi: vsi to be notified
* @link_up: link up or down
**/
static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
{
if (!vsi)
return;
switch (vsi->type) {
case I40E_VSI_MAIN:
if (!vsi->netdev || !vsi->netdev_registered)
break;
if (link_up) {
netif_carrier_on(vsi->netdev);
netif_tx_wake_all_queues(vsi->netdev);
} else {
netif_carrier_off(vsi->netdev);
netif_tx_stop_all_queues(vsi->netdev);
}
break;
case I40E_VSI_SRIOV:
break;
case I40E_VSI_VMDQ2:
case I40E_VSI_CTRL:
case I40E_VSI_MIRROR:
default:
/* there is no notification for other VSIs */
break;
}
}
/**
* i40e_veb_link_event - notify elements on the veb of a link event
* @veb: veb to be notified
* @link_up: link up or down
**/
static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
{
struct i40e_pf *pf;
int i;
if (!veb || !veb->pf)
return;
pf = veb->pf;
/* depth first... */
for (i = 0; i < I40E_MAX_VEB; i++)
if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
i40e_veb_link_event(pf->veb[i], link_up);
/* ... now the local VSIs */
for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
i40e_vsi_link_event(pf->vsi[i], link_up);
}
/**
* i40e_link_event - Update netif_carrier status
* @pf: board private structure
**/
static void i40e_link_event(struct i40e_pf *pf)
{
bool new_link, old_link;
new_link = (pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP);
old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
if (new_link == old_link)
return;
if (!test_bit(__I40E_DOWN, &pf->vsi[pf->lan_vsi]->state))
netdev_info(pf->vsi[pf->lan_vsi]->netdev,
"NIC Link is %s\n", (new_link ? "Up" : "Down"));
/* Notify the base of the switch tree connected to
* the link. Floating VEBs are not notified.
*/
if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
else
i40e_vsi_link_event(pf->vsi[pf->lan_vsi], new_link);
if (pf->vf)
i40e_vc_notify_link_state(pf);
}
/**
* i40e_check_hang_subtask - Check for hung queues and dropped interrupts
* @pf: board private structure
*
* Set the per-queue flags to request a check for stuck queues in the irq
* clean functions, then force interrupts to be sure the irq clean is called.
**/
static void i40e_check_hang_subtask(struct i40e_pf *pf)
{
int i, v;
/* If we're down or resetting, just bail */
if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
return;
/* for each VSI/netdev
* for each Tx queue
* set the check flag
* for each q_vector
* force an interrupt
*/
for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
struct i40e_vsi *vsi = pf->vsi[v];
int armed = 0;
if (!pf->vsi[v] ||
test_bit(__I40E_DOWN, &vsi->state) ||
(vsi->netdev && !netif_carrier_ok(vsi->netdev)))
continue;
for (i = 0; i < vsi->num_queue_pairs; i++) {
set_check_for_tx_hang(vsi->tx_rings[i]);
if (test_bit(__I40E_HANG_CHECK_ARMED,
&vsi->tx_rings[i]->state))
armed++;
}
if (armed) {
if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
(I40E_PFINT_DYN_CTL0_INTENA_MASK |
I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
} else {
u16 vec = vsi->base_vector - 1;
u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK);
for (i = 0; i < vsi->num_q_vectors; i++, vec++)
wr32(&vsi->back->hw,
I40E_PFINT_DYN_CTLN(vec), val);
}
i40e_flush(&vsi->back->hw);
}
}
}
/**
* i40e_watchdog_subtask - Check and bring link up
* @pf: board private structure
**/
static void i40e_watchdog_subtask(struct i40e_pf *pf)
{
int i;
/* if interface is down do nothing */
if (test_bit(__I40E_DOWN, &pf->state) ||
test_bit(__I40E_CONFIG_BUSY, &pf->state))
return;
/* Update the stats for active netdevs so the network stack
* can look at updated numbers whenever it cares to
*/
for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
if (pf->vsi[i] && pf->vsi[i]->netdev)
i40e_update_stats(pf->vsi[i]);
/* Update the stats for the active switching components */
for (i = 0; i < I40E_MAX_VEB; i++)
if (pf->veb[i])
i40e_update_veb_stats(pf->veb[i]);
}
/**
* i40e_reset_subtask - Set up for resetting the device and driver
* @pf: board private structure
**/
static void i40e_reset_subtask(struct i40e_pf *pf)
{
u32 reset_flags = 0;
rtnl_lock();
if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
reset_flags |= (1 << __I40E_REINIT_REQUESTED);
clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
}
if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
}
if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
}
if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
}
/* If there's a recovery already waiting, it takes
* precedence before starting a new reset sequence.
*/
if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
i40e_handle_reset_warning(pf);
goto unlock;
}
/* If we're already down or resetting, just bail */
if (reset_flags &&
!test_bit(__I40E_DOWN, &pf->state) &&
!test_bit(__I40E_CONFIG_BUSY, &pf->state))
i40e_do_reset(pf, reset_flags);
unlock:
rtnl_unlock();
}
/**
* i40e_handle_link_event - Handle link event
* @pf: board private structure
* @e: event info posted on ARQ
**/
static void i40e_handle_link_event(struct i40e_pf *pf,
struct i40e_arq_event_info *e)
{
struct i40e_hw *hw = &pf->hw;
struct i40e_aqc_get_link_status *status =
(struct i40e_aqc_get_link_status *)&e->desc.params.raw;
struct i40e_link_status *hw_link_info = &hw->phy.link_info;
/* save off old link status information */
memcpy(&pf->hw.phy.link_info_old, hw_link_info,
sizeof(pf->hw.phy.link_info_old));
/* update link status */
hw_link_info->phy_type = (enum i40e_aq_phy_type)status->phy_type;
hw_link_info->link_speed = (enum i40e_aq_link_speed)status->link_speed;
hw_link_info->link_info = status->link_info;
hw_link_info->an_info = status->an_info;
hw_link_info->ext_info = status->ext_info;
hw_link_info->lse_enable =
le16_to_cpu(status->command_flags) &
I40E_AQ_LSE_ENABLE;
/* process the event */
i40e_link_event(pf);
/* Do a new status request to re-enable LSE reporting
* and load new status information into the hw struct,
* then see if the status changed while processing the
* initial event.
*/
i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
i40e_link_event(pf);
}
/**
* i40e_clean_adminq_subtask - Clean the AdminQ rings
* @pf: board private structure
**/
static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
{
struct i40e_arq_event_info event;
struct i40e_hw *hw = &pf->hw;
u16 pending, i = 0;
i40e_status ret;
u16 opcode;
u32 val;
if (!test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state))
return;
event.msg_size = I40E_MAX_AQ_BUF_SIZE;
event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
if (!event.msg_buf)
return;
do {
ret = i40e_clean_arq_element(hw, &event, &pending);
if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK) {
dev_info(&pf->pdev->dev, "No ARQ event found\n");
break;
} else if (ret) {
dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
break;
}
opcode = le16_to_cpu(event.desc.opcode);
switch (opcode) {
case i40e_aqc_opc_get_link_status:
i40e_handle_link_event(pf, &event);
break;
case i40e_aqc_opc_send_msg_to_pf:
ret = i40e_vc_process_vf_msg(pf,
le16_to_cpu(event.desc.retval),
le32_to_cpu(event.desc.cookie_high),
le32_to_cpu(event.desc.cookie_low),
event.msg_buf,
event.msg_size);
break;
case i40e_aqc_opc_lldp_update_mib:
dev_info(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
break;
case i40e_aqc_opc_event_lan_overflow:
dev_info(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
i40e_handle_lan_overflow_event(pf, &event);
break;
default:
dev_info(&pf->pdev->dev,
"ARQ Error: Unknown event %d received\n",
event.desc.opcode);
break;
}
} while (pending && (i++ < pf->adminq_work_limit));
clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
/* re-enable Admin queue interrupt cause */
val = rd32(hw, I40E_PFINT_ICR0_ENA);
val |= I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
wr32(hw, I40E_PFINT_ICR0_ENA, val);
i40e_flush(hw);
kfree(event.msg_buf);
}
/**
* i40e_reconstitute_veb - rebuild the VEB and anything connected to it
* @veb: pointer to the VEB instance
*
* This is a recursive function that first builds the attached VSIs then
* recurses in to build the next layer of VEB. We track the connections
* through our own index numbers because the seid's from the HW could
* change across the reset.
**/
static int i40e_reconstitute_veb(struct i40e_veb *veb)
{
struct i40e_vsi *ctl_vsi = NULL;
struct i40e_pf *pf = veb->pf;
int v, veb_idx;
int ret;
/* build VSI that owns this VEB, temporarily attached to base VEB */
for (v = 0; v < pf->hw.func_caps.num_vsis && !ctl_vsi; v++) {
if (pf->vsi[v] &&
pf->vsi[v]->veb_idx == veb->idx &&
pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
ctl_vsi = pf->vsi[v];
break;
}
}
if (!ctl_vsi) {
dev_info(&pf->pdev->dev,
"missing owner VSI for veb_idx %d\n", veb->idx);
ret = -ENOENT;
goto end_reconstitute;
}
if (ctl_vsi != pf->vsi[pf->lan_vsi])
ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
ret = i40e_add_vsi(ctl_vsi);
if (ret) {
dev_info(&pf->pdev->dev,
"rebuild of owner VSI failed: %d\n", ret);
goto end_reconstitute;
}
i40e_vsi_reset_stats(ctl_vsi);
/* create the VEB in the switch and move the VSI onto the VEB */
ret = i40e_add_veb(veb, ctl_vsi);
if (ret)
goto end_reconstitute;
/* create the remaining VSIs attached to this VEB */
for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
continue;
if (pf->vsi[v]->veb_idx == veb->idx) {
struct i40e_vsi *vsi = pf->vsi[v];
vsi->uplink_seid = veb->seid;
ret = i40e_add_vsi(vsi);
if (ret) {
dev_info(&pf->pdev->dev,
"rebuild of vsi_idx %d failed: %d\n",
v, ret);
goto end_reconstitute;
}
i40e_vsi_reset_stats(vsi);
}
}
/* create any VEBs attached to this VEB - RECURSION */
for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
pf->veb[veb_idx]->uplink_seid = veb->seid;
ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
if (ret)
break;
}
}
end_reconstitute:
return ret;
}
/**
* i40e_get_capabilities - get info about the HW
* @pf: the PF struct
**/
static int i40e_get_capabilities(struct i40e_pf *pf)
{
struct i40e_aqc_list_capabilities_element_resp *cap_buf;
u16 data_size;
int buf_len;
int err;
buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
do {
cap_buf = kzalloc(buf_len, GFP_KERNEL);
if (!cap_buf)
return -ENOMEM;
/* this loads the data into the hw struct for us */
err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
&data_size,
i40e_aqc_opc_list_func_capabilities,
NULL);
/* data loaded, buffer no longer needed */
kfree(cap_buf);
if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
/* retry with a larger buffer */
buf_len = data_size;
} else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
dev_info(&pf->pdev->dev,
"capability discovery failed: aq=%d\n",
pf->hw.aq.asq_last_status);
return -ENODEV;
}
} while (err);
if (pf->hw.revision_id == 0 && pf->hw.func_caps.npar_enable) {
pf->hw.func_caps.num_msix_vectors += 1;
pf->hw.func_caps.num_tx_qp =
min_t(int, pf->hw.func_caps.num_tx_qp,
I40E_MAX_NPAR_QPS);
}
if (pf->hw.debug_mask & I40E_DEBUG_USER)
dev_info(&pf->pdev->dev,
"pf=%d, num_vfs=%d, msix_pf=%d, msix_vf=%d, fd_g=%d, fd_b=%d, pf_max_q=%d num_vsi=%d\n",
pf->hw.pf_id, pf->hw.func_caps.num_vfs,
pf->hw.func_caps.num_msix_vectors,
pf->hw.func_caps.num_msix_vectors_vf,
pf->hw.func_caps.fd_filters_guaranteed,
pf->hw.func_caps.fd_filters_best_effort,
pf->hw.func_caps.num_tx_qp,
pf->hw.func_caps.num_vsis);
#define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
+ pf->hw.func_caps.num_vfs)
if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
dev_info(&pf->pdev->dev,
"got num_vsis %d, setting num_vsis to %d\n",
pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
}
return 0;
}
/**
* i40e_fdir_setup - initialize the Flow Director resources
* @pf: board private structure
**/
static void i40e_fdir_setup(struct i40e_pf *pf)
{
struct i40e_vsi *vsi;
bool new_vsi = false;
int err, i;
if (!(pf->flags & (I40E_FLAG_FDIR_ENABLED |
I40E_FLAG_FDIR_ATR_ENABLED)))
return;
pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
/* find existing or make new FDIR VSI */
vsi = NULL;
for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR)
vsi = pf->vsi[i];
if (!vsi) {
vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR, pf->mac_seid, 0);
if (!vsi) {
dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
pf->flags &= ~I40E_FLAG_FDIR_ENABLED;
return;
}
new_vsi = true;
}
WARN_ON(vsi->base_queue != I40E_FDIR_RING);
i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_rings);
err = i40e_vsi_setup_tx_resources(vsi);
if (!err)
err = i40e_vsi_setup_rx_resources(vsi);
if (!err)
err = i40e_vsi_configure(vsi);
if (!err && new_vsi) {
char int_name[IFNAMSIZ + 9];
snprintf(int_name, sizeof(int_name) - 1, "%s-fdir",
dev_driver_string(&pf->pdev->dev));
err = i40e_vsi_request_irq(vsi, int_name);
}
if (!err)
err = i40e_up_complete(vsi);
clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
}
/**
* i40e_fdir_teardown - release the Flow Director resources
* @pf: board private structure
**/
static void i40e_fdir_teardown(struct i40e_pf *pf)
{
int i;
for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
i40e_vsi_release(pf->vsi[i]);
break;
}
}
}
/**
* i40e_prep_for_reset - prep for the core to reset
* @pf: board private structure
*
* Close up the VFs and other things in prep for pf Reset.
**/
static int i40e_prep_for_reset(struct i40e_pf *pf)
{
struct i40e_hw *hw = &pf->hw;
i40e_status ret;
u32 v;
clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
return 0;
dev_info(&pf->pdev->dev, "Tearing down internal switch for reset\n");
i40e_vc_notify_reset(pf);
/* quiesce the VSIs and their queues that are not already DOWN */
i40e_pf_quiesce_all_vsi(pf);
for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
if (pf->vsi[v])
pf->vsi[v]->seid = 0;
}
i40e_shutdown_adminq(&pf->hw);
/* call shutdown HMC */
ret = i40e_shutdown_lan_hmc(hw);
if (ret) {
dev_info(&pf->pdev->dev, "shutdown_lan_hmc failed: %d\n", ret);
clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
}
return ret;
}
/**
* i40e_reset_and_rebuild - reset and rebuid using a saved config
* @pf: board private structure
* @reinit: if the Main VSI needs to re-initialized.
**/
static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
{
struct i40e_driver_version dv;
struct i40e_hw *hw = &pf->hw;
i40e_status ret;
u32 v;
/* Now we wait for GRST to settle out.
* We don't have to delete the VEBs or VSIs from the hw switch
* because the reset will make them disappear.
*/
ret = i40e_pf_reset(hw);
if (ret)
dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
pf->pfr_count++;
if (test_bit(__I40E_DOWN, &pf->state))
goto end_core_reset;
dev_info(&pf->pdev->dev, "Rebuilding internal switch\n");
/* rebuild the basics for the AdminQ, HMC, and initial HW switch */
ret = i40e_init_adminq(&pf->hw);
if (ret) {
dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
goto end_core_reset;
}
ret = i40e_get_capabilities(pf);
if (ret) {
dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
ret);
goto end_core_reset;
}
ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
hw->func_caps.num_rx_qp,
pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
if (ret) {
dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
goto end_core_reset;
}
ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
if (ret) {
dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
goto end_core_reset;
}
/* do basic switch setup */
ret = i40e_setup_pf_switch(pf, reinit);
if (ret)
goto end_core_reset;
/* Rebuild the VSIs and VEBs that existed before reset.
* They are still in our local switch element arrays, so only
* need to rebuild the switch model in the HW.
*
* If there were VEBs but the reconstitution failed, we'll try
* try to recover minimal use by getting the basic PF VSI working.
*/
if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
dev_info(&pf->pdev->dev, "attempting to rebuild switch\n");
/* find the one VEB connected to the MAC, and find orphans */
for (v = 0; v < I40E_MAX_VEB; v++) {
if (!pf->veb[v])
continue;
if (pf->veb[v]->uplink_seid == pf->mac_seid ||
pf->veb[v]->uplink_seid == 0) {
ret = i40e_reconstitute_veb(pf->veb[v]);
if (!ret)
continue;
/* If Main VEB failed, we're in deep doodoo,
* so give up rebuilding the switch and set up
* for minimal rebuild of PF VSI.
* If orphan failed, we'll report the error
* but try to keep going.
*/
if (pf->veb[v]->uplink_seid == pf->mac_seid) {
dev_info(&pf->pdev->dev,
"rebuild of switch failed: %d, will try to set up simple PF connection\n",
ret);
pf->vsi[pf->lan_vsi]->uplink_seid
= pf->mac_seid;
break;
} else if (pf->veb[v]->uplink_seid == 0) {
dev_info(&pf->pdev->dev,
"rebuild of orphan VEB failed: %d\n",
ret);
}
}
}
}
if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
dev_info(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
/* no VEB, so rebuild only the Main VSI */
ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
if (ret) {
dev_info(&pf->pdev->dev,
"rebuild of Main VSI failed: %d\n", ret);
goto end_core_reset;
}
}
/* reinit the misc interrupt */
if (pf->flags & I40E_FLAG_MSIX_ENABLED)
ret = i40e_setup_misc_vector(pf);
/* restart the VSIs that were rebuilt and running before the reset */
i40e_pf_unquiesce_all_vsi(pf);
/* tell the firmware that we're starting */
dv.major_version = DRV_VERSION_MAJOR;
dv.minor_version = DRV_VERSION_MINOR;
dv.build_version = DRV_VERSION_BUILD;
dv.subbuild_version = 0;
i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
dev_info(&pf->pdev->dev, "PF reset done\n");
end_core_reset:
clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
}
/**
* i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
* @pf: board private structure
*
* Close up the VFs and other things in prep for a Core Reset,
* then get ready to rebuild the world.
**/
static void i40e_handle_reset_warning(struct i40e_pf *pf)
{
i40e_status ret;
ret = i40e_prep_for_reset(pf);
if (!ret)
i40e_reset_and_rebuild(pf, false);
}
/**
* i40e_handle_mdd_event
* @pf: pointer to the pf structure
*
* Called from the MDD irq handler to identify possibly malicious vfs
**/
static void i40e_handle_mdd_event(struct i40e_pf *pf)
{
struct i40e_hw *hw = &pf->hw;
bool mdd_detected = false;
struct i40e_vf *vf;
u32 reg;
int i;
if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
return;
/* find what triggered the MDD event */
reg = rd32(hw, I40E_GL_MDET_TX);
if (reg & I40E_GL_MDET_TX_VALID_MASK) {
u8 func = (reg & I40E_GL_MDET_TX_FUNCTION_MASK)
>> I40E_GL_MDET_TX_FUNCTION_SHIFT;
u8 event = (reg & I40E_GL_MDET_TX_EVENT_SHIFT)
>> I40E_GL_MDET_TX_EVENT_SHIFT;
u8 queue = (reg & I40E_GL_MDET_TX_QUEUE_MASK)
>> I40E_GL_MDET_TX_QUEUE_SHIFT;
dev_info(&pf->pdev->dev,
"Malicious Driver Detection TX event 0x%02x on q %d of function 0x%02x\n",
event, queue, func);
wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
mdd_detected = true;
}
reg = rd32(hw, I40E_GL_MDET_RX);
if (reg & I40E_GL_MDET_RX_VALID_MASK) {
u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK)
>> I40E_GL_MDET_RX_FUNCTION_SHIFT;
u8 event = (reg & I40E_GL_MDET_RX_EVENT_SHIFT)
>> I40E_GL_MDET_RX_EVENT_SHIFT;
u8 queue = (reg & I40E_GL_MDET_RX_QUEUE_MASK)
>> I40E_GL_MDET_RX_QUEUE_SHIFT;
dev_info(&pf->pdev->dev,
"Malicious Driver Detection RX event 0x%02x on q %d of function 0x%02x\n",
event, queue, func);
wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
mdd_detected = true;
}
/* see if one of the VFs needs its hand slapped */
for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
vf = &(pf->vf[i]);
reg = rd32(hw, I40E_VP_MDET_TX(i));
if (reg & I40E_VP_MDET_TX_VALID_MASK) {
wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
vf->num_mdd_events++;
dev_info(&pf->pdev->dev, "MDD TX event on VF %d\n", i);
}
reg = rd32(hw, I40E_VP_MDET_RX(i));
if (reg & I40E_VP_MDET_RX_VALID_MASK) {
wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
vf->num_mdd_events++;
dev_info(&pf->pdev->dev, "MDD RX event on VF %d\n", i);
}
if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
dev_info(&pf->pdev->dev,
"Too many MDD events on VF %d, disabled\n", i);
dev_info(&pf->pdev->dev,
"Use PF Control I/F to re-enable the VF\n");
set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
}
}
/* re-enable mdd interrupt cause */
clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
reg = rd32(hw, I40E_PFINT_ICR0_ENA);
reg |= I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
wr32(hw, I40E_PFINT_ICR0_ENA, reg);
i40e_flush(hw);
}
#ifdef CONFIG_I40E_VXLAN
/**
* i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
* @pf: board private structure
**/
static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
{
const int vxlan_hdr_qwords = 4;
struct i40e_hw *hw = &pf->hw;
i40e_status ret;
u8 filter_index;
__be16 port;
int i;
if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
return;
pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
if (pf->pending_vxlan_bitmap & (1 << i)) {
pf->pending_vxlan_bitmap &= ~(1 << i);
port = pf->vxlan_ports[i];
ret = port ?
i40e_aq_add_udp_tunnel(hw, ntohs(port),
vxlan_hdr_qwords,
I40E_AQC_TUNNEL_TYPE_VXLAN,
&filter_index, NULL)
: i40e_aq_del_udp_tunnel(hw, i, NULL);
if (ret) {
dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
port ? "adding" : "deleting",
ntohs(port), port ? i : i);
pf->vxlan_ports[i] = 0;
} else {
dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
port ? "Added" : "Deleted",
ntohs(port), port ? i : filter_index);
}
}
}
}
#endif
/**
* i40e_service_task - Run the driver's async subtasks
* @work: pointer to work_struct containing our data
**/
static void i40e_service_task(struct work_struct *work)
{
struct i40e_pf *pf = container_of(work,
struct i40e_pf,
service_task);
unsigned long start_time = jiffies;
i40e_reset_subtask(pf);
i40e_handle_mdd_event(pf);
i40e_vc_process_vflr_event(pf);
i40e_watchdog_subtask(pf);
i40e_fdir_reinit_subtask(pf);
i40e_check_hang_subtask(pf);
i40e_sync_filters_subtask(pf);
#ifdef CONFIG_I40E_VXLAN
i40e_sync_vxlan_filters_subtask(pf);
#endif
i40e_clean_adminq_subtask(pf);
i40e_service_event_complete(pf);
/* If the tasks have taken longer than one timer cycle or there
* is more work to be done, reschedule the service task now
* rather than wait for the timer to tick again.
*/
if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state) ||
test_bit(__I40E_MDD_EVENT_PENDING, &pf->state) ||
test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
i40e_service_event_schedule(pf);
}
/**
* i40e_service_timer - timer callback
* @data: pointer to PF struct
**/
static void i40e_service_timer(unsigned long data)
{
struct i40e_pf *pf = (struct i40e_pf *)data;
mod_timer(&pf->service_timer,
round_jiffies(jiffies + pf->service_timer_period));
i40e_service_event_schedule(pf);
}
/**
* i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
* @vsi: the VSI being configured
**/
static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
switch (vsi->type) {
case I40E_VSI_MAIN:
vsi->alloc_queue_pairs = pf->num_lan_qps;
vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
I40E_REQ_DESCRIPTOR_MULTIPLE);
if (pf->flags & I40E_FLAG_MSIX_ENABLED)
vsi->num_q_vectors = pf->num_lan_msix;
else
vsi->num_q_vectors = 1;
break;
case I40E_VSI_FDIR:
vsi->alloc_queue_pairs = 1;
vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
I40E_REQ_DESCRIPTOR_MULTIPLE);
vsi->num_q_vectors = 1;
break;
case I40E_VSI_VMDQ2:
vsi->alloc_queue_pairs = pf->num_vmdq_qps;
vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
I40E_REQ_DESCRIPTOR_MULTIPLE);
vsi->num_q_vectors = pf->num_vmdq_msix;
break;
case I40E_VSI_SRIOV:
vsi->alloc_queue_pairs = pf->num_vf_qps;
vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
I40E_REQ_DESCRIPTOR_MULTIPLE);
break;
default:
WARN_ON(1);
return -ENODATA;
}
return 0;
}
/**
* i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
* @type: VSI pointer
* @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
*
* On error: returns error code (negative)
* On success: returns 0
**/
static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
{
int size;
int ret = 0;
/* allocate memory for both Tx and Rx ring pointers */
size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
vsi->tx_rings = kzalloc(size, GFP_KERNEL);
if (!vsi->tx_rings)
return -ENOMEM;
vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
if (alloc_qvectors) {
/* allocate memory for q_vector pointers */
size = sizeof(struct i40e_q_vectors *) * vsi->num_q_vectors;
vsi->q_vectors = kzalloc(size, GFP_KERNEL);
if (!vsi->q_vectors) {
ret = -ENOMEM;
goto err_vectors;
}
}
return ret;
err_vectors:
kfree(vsi->tx_rings);
return ret;
}
/**
* i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
* @pf: board private structure
* @type: type of VSI
*
* On error: returns error code (negative)
* On success: returns vsi index in PF (positive)
**/
static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
{
int ret = -ENODEV;
struct i40e_vsi *vsi;
int vsi_idx;
int i;
/* Need to protect the allocation of the VSIs at the PF level */
mutex_lock(&pf->switch_mutex);
/* VSI list may be fragmented if VSI creation/destruction has
* been happening. We can afford to do a quick scan to look
* for any free VSIs in the list.
*
* find next empty vsi slot, looping back around if necessary
*/
i = pf->next_vsi;
while (i < pf->hw.func_caps.num_vsis && pf->vsi[i])
i++;
if (i >= pf->hw.func_caps.num_vsis) {
i = 0;
while (i < pf->next_vsi && pf->vsi[i])
i++;
}
if (i < pf->hw.func_caps.num_vsis && !pf->vsi[i]) {
vsi_idx = i; /* Found one! */
} else {
ret = -ENODEV;
goto unlock_pf; /* out of VSI slots! */
}
pf->next_vsi = ++i;
vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
if (!vsi) {
ret = -ENOMEM;
goto unlock_pf;
}
vsi->type = type;
vsi->back = pf;
set_bit(__I40E_DOWN, &vsi->state);
vsi->flags = 0;
vsi->idx = vsi_idx;
vsi->rx_itr_setting = pf->rx_itr_default;
vsi->tx_itr_setting = pf->tx_itr_default;
vsi->netdev_registered = false;
vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
INIT_LIST_HEAD(&vsi->mac_filter_list);
ret = i40e_set_num_rings_in_vsi(vsi);
if (ret)
goto err_rings;
ret = i40e_vsi_alloc_arrays(vsi, true);
if (ret)
goto err_rings;
/* Setup default MSIX irq handler for VSI */
i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
pf->vsi[vsi_idx] = vsi;
ret = vsi_idx;
goto unlock_pf;
err_rings:
pf->next_vsi = i - 1;
kfree(vsi);
unlock_pf:
mutex_unlock(&pf->switch_mutex);
return ret;
}
/**
* i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
* @type: VSI pointer
* @free_qvectors: a bool to specify if q_vectors need to be freed.
*
* On error: returns error code (negative)
* On success: returns 0
**/
static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
{
/* free the ring and vector containers */
if (free_qvectors) {
kfree(vsi->q_vectors);
vsi->q_vectors = NULL;
}
kfree(vsi->tx_rings);
vsi->tx_rings = NULL;
vsi->rx_rings = NULL;
}
/**
* i40e_vsi_clear - Deallocate the VSI provided
* @vsi: the VSI being un-configured
**/
static int i40e_vsi_clear(struct i40e_vsi *vsi)
{
struct i40e_pf *pf;
if (!vsi)
return 0;
if (!vsi->back)
goto free_vsi;
pf = vsi->back;
mutex_lock(&pf->switch_mutex);
if (!pf->vsi[vsi->idx]) {
dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
vsi->idx, vsi->idx, vsi, vsi->type);
goto unlock_vsi;
}
if (pf->vsi[vsi->idx] != vsi) {
dev_err(&pf->pdev->dev,
"pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
pf->vsi[vsi->idx]->idx,
pf->vsi[vsi->idx],
pf->vsi[vsi->idx]->type,
vsi->idx, vsi, vsi->type);
goto unlock_vsi;
}
/* updates the pf for this cleared vsi */
i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
i40e_vsi_free_arrays(vsi, true);
pf->vsi[vsi->idx] = NULL;
if (vsi->idx < pf->next_vsi)
pf->next_vsi = vsi->idx;
unlock_vsi:
mutex_unlock(&pf->switch_mutex);
free_vsi:
kfree(vsi);
return 0;
}
/**
* i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
* @vsi: the VSI being cleaned
**/
static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
{
int i;
if (vsi->tx_rings[0]) {
for (i = 0; i < vsi->num_queue_pairs; i++) {
kfree_rcu(vsi->tx_rings[i], rcu);
vsi->tx_rings[i] = NULL;
vsi->rx_rings[i] = NULL;
}
}
}
/**
* i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
* @vsi: the VSI being configured
**/
static int i40e_alloc_rings(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
int i;
/* Set basic values in the rings to be used later during open() */
for (i = 0; i < vsi->num_queue_pairs; i++) {
struct i40e_ring *tx_ring;
struct i40e_ring *rx_ring;
/* allocate space for both Tx and Rx in one shot */
tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
if (!tx_ring)
goto err_out;
tx_ring->queue_index = i;
tx_ring->reg_idx = vsi->base_queue + i;
tx_ring->ring_active = false;
tx_ring->vsi = vsi;
tx_ring->netdev = vsi->netdev;
tx_ring->dev = &pf->pdev->dev;
tx_ring->count = vsi->num_desc;
tx_ring->size = 0;
tx_ring->dcb_tc = 0;
vsi->tx_rings[i] = tx_ring;
rx_ring = &tx_ring[1];
rx_ring->queue_index = i;
rx_ring->reg_idx = vsi->base_queue + i;
rx_ring->ring_active = false;
rx_ring->vsi = vsi;
rx_ring->netdev = vsi->netdev;
rx_ring->dev = &pf->pdev->dev;
rx_ring->count = vsi->num_desc;
rx_ring->size = 0;
rx_ring->dcb_tc = 0;
if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
set_ring_16byte_desc_enabled(rx_ring);
else
clear_ring_16byte_desc_enabled(rx_ring);
vsi->rx_rings[i] = rx_ring;
}
return 0;
err_out:
i40e_vsi_clear_rings(vsi);
return -ENOMEM;
}
/**
* i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
* @pf: board private structure
* @vectors: the number of MSI-X vectors to request
*
* Returns the number of vectors reserved, or error
**/
static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
{
int err = 0;
pf->num_msix_entries = 0;
while (vectors >= I40E_MIN_MSIX) {
err = pci_enable_msix(pf->pdev, pf->msix_entries, vectors);
if (err == 0) {
/* good to go */
pf->num_msix_entries = vectors;
break;
} else if (err < 0) {
/* total failure */
dev_info(&pf->pdev->dev,
"MSI-X vector reservation failed: %d\n", err);
vectors = 0;
break;
} else {
/* err > 0 is the hint for retry */
dev_info(&pf->pdev->dev,
"MSI-X vectors wanted %d, retrying with %d\n",
vectors, err);
vectors = err;
}
}
if (vectors > 0 && vectors < I40E_MIN_MSIX) {
dev_info(&pf->pdev->dev,
"Couldn't get enough vectors, only %d available\n",
vectors);
vectors = 0;
}
return vectors;
}
/**
* i40e_init_msix - Setup the MSIX capability
* @pf: board private structure
*
* Work with the OS to set up the MSIX vectors needed.
*
* Returns 0 on success, negative on failure
**/
static int i40e_init_msix(struct i40e_pf *pf)
{
i40e_status err = 0;
struct i40e_hw *hw = &pf->hw;
int v_budget, i;
int vec;
if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
return -ENODEV;
/* The number of vectors we'll request will be comprised of:
* - Add 1 for "other" cause for Admin Queue events, etc.
* - The number of LAN queue pairs
* - Queues being used for RSS.
* We don't need as many as max_rss_size vectors.
* use rss_size instead in the calculation since that
* is governed by number of cpus in the system.
* - assumes symmetric Tx/Rx pairing
* - The number of VMDq pairs
* Once we count this up, try the request.
*
* If we can't get what we want, we'll simplify to nearly nothing
* and try again. If that still fails, we punt.
*/
pf->num_lan_msix = pf->num_lan_qps - (pf->rss_size_max - pf->rss_size);
pf->num_vmdq_msix = pf->num_vmdq_qps;
v_budget = 1 + pf->num_lan_msix;
v_budget += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
if (pf->flags & I40E_FLAG_FDIR_ENABLED)
v_budget++;
/* Scale down if necessary, and the rings will share vectors */
v_budget = min_t(int, v_budget, hw->func_caps.num_msix_vectors);
pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
GFP_KERNEL);
if (!pf->msix_entries)
return -ENOMEM;
for (i = 0; i < v_budget; i++)
pf->msix_entries[i].entry = i;
vec = i40e_reserve_msix_vectors(pf, v_budget);
if (vec < I40E_MIN_MSIX) {
pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
kfree(pf->msix_entries);
pf->msix_entries = NULL;
return -ENODEV;
} else if (vec == I40E_MIN_MSIX) {
/* Adjust for minimal MSIX use */
dev_info(&pf->pdev->dev, "Features disabled, not enough MSIX vectors\n");
pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
pf->num_vmdq_vsis = 0;
pf->num_vmdq_qps = 0;
pf->num_vmdq_msix = 0;
pf->num_lan_qps = 1;
pf->num_lan_msix = 1;
} else if (vec != v_budget) {
/* Scale vector usage down */
pf->num_vmdq_msix = 1; /* force VMDqs to only one vector */
vec--; /* reserve the misc vector */
/* partition out the remaining vectors */
switch (vec) {
case 2:
pf->num_vmdq_vsis = 1;
pf->num_lan_msix = 1;
break;
case 3:
pf->num_vmdq_vsis = 1;
pf->num_lan_msix = 2;
break;
default:
pf->num_lan_msix = min_t(int, (vec / 2),
pf->num_lan_qps);
pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
I40E_DEFAULT_NUM_VMDQ_VSI);
break;
}
}
return err;
}
/**
* i40e_alloc_q_vector - Allocate memory for a single interrupt vector
* @vsi: the VSI being configured
* @v_idx: index of the vector in the vsi struct
*
* We allocate one q_vector. If allocation fails we return -ENOMEM.
**/
static int i40e_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
{
struct i40e_q_vector *q_vector;
/* allocate q_vector */
q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
if (!q_vector)
return -ENOMEM;
q_vector->vsi = vsi;
q_vector->v_idx = v_idx;
cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
if (vsi->netdev)
netif_napi_add(vsi->netdev, &q_vector->napi,
i40e_napi_poll, vsi->work_limit);
q_vector->rx.latency_range = I40E_LOW_LATENCY;
q_vector->tx.latency_range = I40E_LOW_LATENCY;
/* tie q_vector and vsi together */
vsi->q_vectors[v_idx] = q_vector;
return 0;
}
/**
* i40e_alloc_q_vectors - Allocate memory for interrupt vectors
* @vsi: the VSI being configured
*
* We allocate one q_vector per queue interrupt. If allocation fails we
* return -ENOMEM.
**/
static int i40e_alloc_q_vectors(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
int v_idx, num_q_vectors;
int err;
/* if not MSIX, give the one vector only to the LAN VSI */
if (pf->flags & I40E_FLAG_MSIX_ENABLED)
num_q_vectors = vsi->num_q_vectors;
else if (vsi == pf->vsi[pf->lan_vsi])
num_q_vectors = 1;
else
return -EINVAL;
for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
err = i40e_alloc_q_vector(vsi, v_idx);
if (err)
goto err_out;
}
return 0;
err_out:
while (v_idx--)
i40e_free_q_vector(vsi, v_idx);
return err;
}
/**
* i40e_init_interrupt_scheme - Determine proper interrupt scheme
* @pf: board private structure to initialize
**/
static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
{
int err = 0;
if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
err = i40e_init_msix(pf);
if (err) {
pf->flags &= ~(I40E_FLAG_MSIX_ENABLED |
I40E_FLAG_RSS_ENABLED |
I40E_FLAG_MQ_ENABLED |
I40E_FLAG_DCB_ENABLED |
I40E_FLAG_SRIOV_ENABLED |
I40E_FLAG_FDIR_ENABLED |
I40E_FLAG_FDIR_ATR_ENABLED |
I40E_FLAG_VMDQ_ENABLED);
/* rework the queue expectations without MSIX */
i40e_determine_queue_usage(pf);
}
}
if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
(pf->flags & I40E_FLAG_MSI_ENABLED)) {
dev_info(&pf->pdev->dev, "MSIX not available, trying MSI\n");
err = pci_enable_msi(pf->pdev);
if (err) {
dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
pf->flags &= ~I40E_FLAG_MSI_ENABLED;
}
}
if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
dev_info(&pf->pdev->dev, "MSIX and MSI not available, falling back to Legacy IRQ\n");
/* track first vector for misc interrupts */
err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
}
/**
* i40e_setup_misc_vector - Setup the misc vector to handle non queue events
* @pf: board private structure
*
* This sets up the handler for MSIX 0, which is used to manage the
* non-queue interrupts, e.g. AdminQ and errors. This is not used
* when in MSI or Legacy interrupt mode.
**/
static int i40e_setup_misc_vector(struct i40e_pf *pf)
{
struct i40e_hw *hw = &pf->hw;
int err = 0;
/* Only request the irq if this is the first time through, and
* not when we're rebuilding after a Reset
*/
if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
err = request_irq(pf->msix_entries[0].vector,
i40e_intr, 0, pf->misc_int_name, pf);
if (err) {
dev_info(&pf->pdev->dev,
"request_irq for msix_misc failed: %d\n", err);
return -EFAULT;
}
}
i40e_enable_misc_int_causes(hw);
/* associate no queues to the misc vector */
wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
i40e_flush(hw);
i40e_irq_dynamic_enable_icr0(pf);
return err;
}
/**
* i40e_config_rss - Prepare for RSS if used
* @pf: board private structure
**/
static int i40e_config_rss(struct i40e_pf *pf)
{
const u64 default_hena =
((u64)1 << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP) |
((u64)1 << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP) |
((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_UDP) |
((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_SCTP) |
((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN) |
((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_TCP) |
((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) |
((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV4) |
((u64)1 << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP) |
((u64)1 << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP) |
((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_UDP) |
((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_TCP_SYN) |
((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_TCP) |
((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_SCTP) |
((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_OTHER) |
((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV6) |
((u64)1 << I40E_FILTER_PCTYPE_L2_PAYLOAD);
/* Set of random keys generated using kernel random number generator */
static const u32 seed[I40E_PFQF_HKEY_MAX_INDEX + 1] = {0x41b01687,
0x183cfd8c, 0xce880440, 0x580cbc3c, 0x35897377,
0x328b25e1, 0x4fa98922, 0xb7d90c14, 0xd5bad70d,
0xcd15a2c1, 0xe8580225, 0x4a1e9d11, 0xfe5731be};
struct i40e_hw *hw = &pf->hw;
u32 lut = 0;
int i, j;
u64 hena;
/* Fill out hash function seed */
for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
wr32(hw, I40E_PFQF_HKEY(i), seed[i]);
/* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
hena |= default_hena;
wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
/* Populate the LUT with max no. of queues in round robin fashion */
for (i = 0, j = 0; i < pf->hw.func_caps.rss_table_size; i++, j++) {
/* The assumption is that lan qp count will be the highest
* qp count for any PF VSI that needs RSS.
* If multiple VSIs need RSS support, all the qp counts
* for those VSIs should be a power of 2 for RSS to work.
* If LAN VSI is the only consumer for RSS then this requirement
* is not necessary.
*/
if (j == pf->rss_size)
j = 0;
/* lut = 4-byte sliding window of 4 lut entries */
lut = (lut << 8) | (j &
((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
/* On i = 3, we have 4 entries in lut; write to the register */
if ((i & 3) == 3)
wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
}
i40e_flush(hw);
return 0;
}
/**
* i40e_reconfig_rss_queues - change number of queues for rss and rebuild
* @pf: board private structure
* @queue_count: the requested queue count for rss.
*
* returns 0 if rss is not enabled, if enabled returns the final rss queue
* count which may be different from the requested queue count.
**/
int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
{
if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
return 0;
queue_count = min_t(int, queue_count, pf->rss_size_max);
queue_count = rounddown_pow_of_two(queue_count);
if (queue_count != pf->rss_size) {
if (pf->queues_left < (queue_count - pf->rss_size)) {
dev_info(&pf->pdev->dev,
"Not enough queues to do RSS on %d queues: remaining queues %d\n",
queue_count, pf->queues_left);
return pf->rss_size;
}
i40e_prep_for_reset(pf);
pf->num_lan_qps += (queue_count - pf->rss_size);
pf->queues_left -= (queue_count - pf->rss_size);
pf->rss_size = queue_count;
i40e_reset_and_rebuild(pf, true);
i40e_config_rss(pf);
}
dev_info(&pf->pdev->dev, "RSS count: %d\n", pf->rss_size);
return pf->rss_size;
}
/**
* i40e_sw_init - Initialize general software structures (struct i40e_pf)
* @pf: board private structure to initialize
*
* i40e_sw_init initializes the Adapter private data structure.
* Fields are initialized based on PCI device information and
* OS network device settings (MTU size).
**/
static int i40e_sw_init(struct i40e_pf *pf)
{
int err = 0;
int size;
pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
(NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
if (I40E_DEBUG_USER & debug)
pf->hw.debug_mask = debug;
pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
I40E_DEFAULT_MSG_ENABLE);
}
/* Set default capability flags */
pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
I40E_FLAG_MSI_ENABLED |
I40E_FLAG_MSIX_ENABLED |
I40E_FLAG_RX_PS_ENABLED |
I40E_FLAG_MQ_ENABLED |
I40E_FLAG_RX_1BUF_ENABLED;
/* Depending on PF configurations, it is possible that the RSS
* maximum might end up larger than the available queues
*/
pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
pf->rss_size_max = min_t(int, pf->rss_size_max,
pf->hw.func_caps.num_tx_qp);
if (pf->hw.func_caps.rss) {
pf->flags |= I40E_FLAG_RSS_ENABLED;
pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
} else {
pf->rss_size = 1;
}
if (pf->hw.func_caps.dcb)
pf->num_tc_qps = I40E_DEFAULT_QUEUES_PER_TC;
else
pf->num_tc_qps = 0;
if (pf->hw.func_caps.fd) {
/* FW/NVM is not yet fixed in this regard */
if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
(pf->hw.func_caps.fd_filters_best_effort > 0)) {
pf->flags |= I40E_FLAG_FDIR_ATR_ENABLED;
dev_info(&pf->pdev->dev,
"Flow Director ATR mode Enabled\n");
pf->flags |= I40E_FLAG_FDIR_ENABLED;
dev_info(&pf->pdev->dev,
"Flow Director Side Band mode Enabled\n");
pf->fdir_pf_filter_count =
pf->hw.func_caps.fd_filters_guaranteed;
}
} else {
pf->fdir_pf_filter_count = 0;
}
if (pf->hw.func_caps.vmdq) {
pf->flags |= I40E_FLAG_VMDQ_ENABLED;
pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
}
/* MFP mode enabled */
if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
pf->flags |= I40E_FLAG_MFP_ENABLED;
dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
}
#ifdef CONFIG_PCI_IOV
if (pf->hw.func_caps.num_vfs) {
pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
pf->flags |= I40E_FLAG_SRIOV_ENABLED;
pf->num_req_vfs = min_t(int,
pf->hw.func_caps.num_vfs,
I40E_MAX_VF_COUNT);
dev_info(&pf->pdev->dev,
"Number of VFs being requested for PF[%d] = %d\n",
pf->hw.pf_id, pf->num_req_vfs);
}
#endif /* CONFIG_PCI_IOV */
pf->eeprom_version = 0xDEAD;
pf->lan_veb = I40E_NO_VEB;
pf->lan_vsi = I40E_NO_VSI;
/* set up queue assignment tracking */
size = sizeof(struct i40e_lump_tracking)
+ (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
pf->qp_pile = kzalloc(size, GFP_KERNEL);
if (!pf->qp_pile) {
err = -ENOMEM;
goto sw_init_done;
}
pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
pf->qp_pile->search_hint = 0;
/* set up vector assignment tracking */
size = sizeof(struct i40e_lump_tracking)
+ (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
pf->irq_pile = kzalloc(size, GFP_KERNEL);
if (!pf->irq_pile) {
kfree(pf->qp_pile);
err = -ENOMEM;
goto sw_init_done;
}
pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
pf->irq_pile->search_hint = 0;
mutex_init(&pf->switch_mutex);
sw_init_done:
return err;
}
/**
* i40e_set_features - set the netdev feature flags
* @netdev: ptr to the netdev being adjusted
* @features: the feature set that the stack is suggesting
**/
static int i40e_set_features(struct net_device *netdev,
netdev_features_t features)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
if (features & NETIF_F_HW_VLAN_CTAG_RX)
i40e_vlan_stripping_enable(vsi);
else
i40e_vlan_stripping_disable(vsi);
return 0;
}
#ifdef CONFIG_I40E_VXLAN
/**
* i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
* @pf: board private structure
* @port: The UDP port to look up
*
* Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
**/
static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
{
u8 i;
for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
if (pf->vxlan_ports[i] == port)
return i;
}
return i;
}
/**
* i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
* @netdev: This physical port's netdev
* @sa_family: Socket Family that VXLAN is notifying us about
* @port: New UDP port number that VXLAN started listening to
**/
static void i40e_add_vxlan_port(struct net_device *netdev,
sa_family_t sa_family, __be16 port)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
u8 next_idx;
u8 idx;
if (sa_family == AF_INET6)
return;
idx = i40e_get_vxlan_port_idx(pf, port);
/* Check if port already exists */
if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
return;
}
/* Now check if there is space to add the new port */
next_idx = i40e_get_vxlan_port_idx(pf, 0);
if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
ntohs(port));
return;
}
/* New port: add it and mark its index in the bitmap */
pf->vxlan_ports[next_idx] = port;
pf->pending_vxlan_bitmap |= (1 << next_idx);
pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
}
/**
* i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
* @netdev: This physical port's netdev
* @sa_family: Socket Family that VXLAN is notifying us about
* @port: UDP port number that VXLAN stopped listening to
**/
static void i40e_del_vxlan_port(struct net_device *netdev,
sa_family_t sa_family, __be16 port)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
u8 idx;
if (sa_family == AF_INET6)
return;
idx = i40e_get_vxlan_port_idx(pf, port);
/* Check if port already exists */
if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
/* if port exists, set it to 0 (mark for deletion)
* and make it pending
*/
pf->vxlan_ports[idx] = 0;
pf->pending_vxlan_bitmap |= (1 << idx);
pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
} else {
netdev_warn(netdev, "Port %d was not found, not deleting\n",
ntohs(port));
}
}
#endif
static const struct net_device_ops i40e_netdev_ops = {
.ndo_open = i40e_open,
.ndo_stop = i40e_close,
.ndo_start_xmit = i40e_lan_xmit_frame,
.ndo_get_stats64 = i40e_get_netdev_stats_struct,
.ndo_set_rx_mode = i40e_set_rx_mode,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = i40e_set_mac,
.ndo_change_mtu = i40e_change_mtu,
.ndo_tx_timeout = i40e_tx_timeout,
.ndo_vlan_rx_add_vid = i40e_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = i40e_vlan_rx_kill_vid,
#ifdef CONFIG_NET_POLL_CONTROLLER
.ndo_poll_controller = i40e_netpoll,
#endif
.ndo_setup_tc = i40e_setup_tc,
.ndo_set_features = i40e_set_features,
.ndo_set_vf_mac = i40e_ndo_set_vf_mac,
.ndo_set_vf_vlan = i40e_ndo_set_vf_port_vlan,
.ndo_set_vf_tx_rate = i40e_ndo_set_vf_bw,
.ndo_get_vf_config = i40e_ndo_get_vf_config,
#ifdef CONFIG_I40E_VXLAN
.ndo_add_vxlan_port = i40e_add_vxlan_port,
.ndo_del_vxlan_port = i40e_del_vxlan_port,
#endif
};
/**
* i40e_config_netdev - Setup the netdev flags
* @vsi: the VSI being configured
*
* Returns 0 on success, negative value on failure
**/
static int i40e_config_netdev(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
struct i40e_netdev_priv *np;
struct net_device *netdev;
u8 mac_addr[ETH_ALEN];
int etherdev_size;
etherdev_size = sizeof(struct i40e_netdev_priv);
netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
if (!netdev)
return -ENOMEM;
vsi->netdev = netdev;
np = netdev_priv(netdev);
np->vsi = vsi;
netdev->hw_enc_features = NETIF_F_IP_CSUM |
NETIF_F_GSO_UDP_TUNNEL |
NETIF_F_TSO |
NETIF_F_SG;
netdev->features = NETIF_F_SG |
NETIF_F_IP_CSUM |
NETIF_F_SCTP_CSUM |
NETIF_F_HIGHDMA |
NETIF_F_GSO_UDP_TUNNEL |
NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_CTAG_RX |
NETIF_F_HW_VLAN_CTAG_FILTER |
NETIF_F_IPV6_CSUM |
NETIF_F_TSO |
NETIF_F_TSO6 |
NETIF_F_RXCSUM |
NETIF_F_RXHASH |
0;
/* copy netdev features into list of user selectable features */
netdev->hw_features |= netdev->features;
if (vsi->type == I40E_VSI_MAIN) {
SET_NETDEV_DEV(netdev, &pf->pdev->dev);
memcpy(mac_addr, hw->mac.perm_addr, ETH_ALEN);
} else {
/* relate the VSI_VMDQ name to the VSI_MAIN name */
snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
pf->vsi[pf->lan_vsi]->netdev->name);
random_ether_addr(mac_addr);
i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
}
memcpy(netdev->dev_addr, mac_addr, ETH_ALEN);
memcpy(netdev->perm_addr, mac_addr, ETH_ALEN);
/* vlan gets same features (except vlan offload)
* after any tweaks for specific VSI types
*/
netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_CTAG_RX |
NETIF_F_HW_VLAN_CTAG_FILTER);
netdev->priv_flags |= IFF_UNICAST_FLT;
netdev->priv_flags |= IFF_SUPP_NOFCS;
/* Setup netdev TC information */
i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
netdev->netdev_ops = &i40e_netdev_ops;
netdev->watchdog_timeo = 5 * HZ;
i40e_set_ethtool_ops(netdev);
return 0;
}
/**
* i40e_vsi_delete - Delete a VSI from the switch
* @vsi: the VSI being removed
*
* Returns 0 on success, negative value on failure
**/
static void i40e_vsi_delete(struct i40e_vsi *vsi)
{
/* remove default VSI is not allowed */
if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
return;
/* there is no HW VSI for FDIR */
if (vsi->type == I40E_VSI_FDIR)
return;
i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
return;
}
/**
* i40e_add_vsi - Add a VSI to the switch
* @vsi: the VSI being configured
*
* This initializes a VSI context depending on the VSI type to be added and
* passes it down to the add_vsi aq command.
**/
static int i40e_add_vsi(struct i40e_vsi *vsi)
{
int ret = -ENODEV;
struct i40e_mac_filter *f, *ftmp;
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
struct i40e_vsi_context ctxt;
u8 enabled_tc = 0x1; /* TC0 enabled */
int f_count = 0;
memset(&ctxt, 0, sizeof(ctxt));
switch (vsi->type) {
case I40E_VSI_MAIN:
/* The PF's main VSI is already setup as part of the
* device initialization, so we'll not bother with
* the add_vsi call, but we will retrieve the current
* VSI context.
*/
ctxt.seid = pf->main_vsi_seid;
ctxt.pf_num = pf->hw.pf_id;
ctxt.vf_num = 0;
ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
ctxt.flags = I40E_AQ_VSI_TYPE_PF;
if (ret) {
dev_info(&pf->pdev->dev,
"couldn't get pf vsi config, err %d, aq_err %d\n",
ret, pf->hw.aq.asq_last_status);
return -ENOENT;
}
memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
vsi->info.valid_sections = 0;
vsi->seid = ctxt.seid;
vsi->id = ctxt.vsi_number;
enabled_tc = i40e_pf_get_tc_map(pf);
/* MFP mode setup queue map and update VSI */
if (pf->flags & I40E_FLAG_MFP_ENABLED) {
memset(&ctxt, 0, sizeof(ctxt));
ctxt.seid = pf->main_vsi_seid;
ctxt.pf_num = pf->hw.pf_id;
ctxt.vf_num = 0;
i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
if (ret) {
dev_info(&pf->pdev->dev,
"update vsi failed, aq_err=%d\n",
pf->hw.aq.asq_last_status);
ret = -ENOENT;
goto err;
}
/* update the local VSI info queue map */
i40e_vsi_update_queue_map(vsi, &ctxt);
vsi->info.valid_sections = 0;
} else {
/* Default/Main VSI is only enabled for TC0
* reconfigure it to enable all TCs that are
* available on the port in SFP mode.
*/
ret = i40e_vsi_config_tc(vsi, enabled_tc);
if (ret) {
dev_info(&pf->pdev->dev,
"failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
enabled_tc, ret,
pf->hw.aq.asq_last_status);
ret = -ENOENT;
}
}
break;
case I40E_VSI_FDIR:
/* no queue mapping or actual HW VSI needed */
vsi->info.valid_sections = 0;
vsi->seid = 0;
vsi->id = 0;
i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
return 0;
break;
case I40E_VSI_VMDQ2:
ctxt.pf_num = hw->pf_id;
ctxt.vf_num = 0;
ctxt.uplink_seid = vsi->uplink_seid;
ctxt.connection_type = 0x1; /* regular data port */
ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
/* This VSI is connected to VEB so the switch_id
* should be set to zero by default.
*/
ctxt.info.switch_id = 0;
ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_LOCAL_LB);
ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
/* Setup the VSI tx/rx queue map for TC0 only for now */
i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
break;
case I40E_VSI_SRIOV:
ctxt.pf_num = hw->pf_id;
ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
ctxt.uplink_seid = vsi->uplink_seid;
ctxt.connection_type = 0x1; /* regular data port */
ctxt.flags = I40E_AQ_VSI_TYPE_VF;
ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
/* This VSI is connected to VEB so the switch_id
* should be set to zero by default.
*/
ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
/* Setup the VSI tx/rx queue map for TC0 only for now */
i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
break;
default:
return -ENODEV;
}
if (vsi->type != I40E_VSI_MAIN) {
ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
if (ret) {
dev_info(&vsi->back->pdev->dev,
"add vsi failed, aq_err=%d\n",
vsi->back->hw.aq.asq_last_status);
ret = -ENOENT;
goto err;
}
memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
vsi->info.valid_sections = 0;
vsi->seid = ctxt.seid;
vsi->id = ctxt.vsi_number;
}
/* If macvlan filters already exist, force them to get loaded */
list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
f->changed = true;
f_count++;
}
if (f_count) {
vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
pf->flags |= I40E_FLAG_FILTER_SYNC;
}
/* Update VSI BW information */
ret = i40e_vsi_get_bw_info(vsi);
if (ret) {
dev_info(&pf->pdev->dev,
"couldn't get vsi bw info, err %d, aq_err %d\n",
ret, pf->hw.aq.asq_last_status);
/* VSI is already added so not tearing that up */
ret = 0;
}
err:
return ret;
}
/**
* i40e_vsi_release - Delete a VSI and free its resources
* @vsi: the VSI being removed
*
* Returns 0 on success or < 0 on error
**/
int i40e_vsi_release(struct i40e_vsi *vsi)
{
struct i40e_mac_filter *f, *ftmp;
struct i40e_veb *veb = NULL;
struct i40e_pf *pf;
u16 uplink_seid;
int i, n;
pf = vsi->back;
/* release of a VEB-owner or last VSI is not allowed */
if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
vsi->seid, vsi->uplink_seid);
return -ENODEV;
}
if (vsi == pf->vsi[pf->lan_vsi] &&
!test_bit(__I40E_DOWN, &pf->state)) {
dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
return -ENODEV;
}
uplink_seid = vsi->uplink_seid;
if (vsi->type != I40E_VSI_SRIOV) {
if (vsi->netdev_registered) {
vsi->netdev_registered = false;
if (vsi->netdev) {
/* results in a call to i40e_close() */
unregister_netdev(vsi->netdev);
free_netdev(vsi->netdev);
vsi->netdev = NULL;
}
} else {
if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
i40e_down(vsi);
i40e_vsi_free_irq(vsi);
i40e_vsi_free_tx_resources(vsi);
i40e_vsi_free_rx_resources(vsi);
}
i40e_vsi_disable_irq(vsi);
}
list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
i40e_del_filter(vsi, f->macaddr, f->vlan,
f->is_vf, f->is_netdev);
i40e_sync_vsi_filters(vsi);
i40e_vsi_delete(vsi);
i40e_vsi_free_q_vectors(vsi);
i40e_vsi_clear_rings(vsi);
i40e_vsi_clear(vsi);
/* If this was the last thing on the VEB, except for the
* controlling VSI, remove the VEB, which puts the controlling
* VSI onto the next level down in the switch.
*
* Well, okay, there's one more exception here: don't remove
* the orphan VEBs yet. We'll wait for an explicit remove request
* from up the network stack.
*/
for (n = 0, i = 0; i < pf->hw.func_caps.num_vsis; i++) {
if (pf->vsi[i] &&
pf->vsi[i]->uplink_seid == uplink_seid &&
(pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
n++; /* count the VSIs */
}
}
for (i = 0; i < I40E_MAX_VEB; i++) {
if (!pf->veb[i])
continue;
if (pf->veb[i]->uplink_seid == uplink_seid)
n++; /* count the VEBs */
if (pf->veb[i]->seid == uplink_seid)
veb = pf->veb[i];
}
if (n == 0 && veb && veb->uplink_seid != 0)
i40e_veb_release(veb);
return 0;
}
/**
* i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
* @vsi: ptr to the VSI
*
* This should only be called after i40e_vsi_mem_alloc() which allocates the
* corresponding SW VSI structure and initializes num_queue_pairs for the
* newly allocated VSI.
*
* Returns 0 on success or negative on failure
**/
static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
{
int ret = -ENOENT;
struct i40e_pf *pf = vsi->back;
if (vsi->q_vectors[0]) {
dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
vsi->seid);
return -EEXIST;
}
if (vsi->base_vector) {
dev_info(&pf->pdev->dev,
"VSI %d has non-zero base vector %d\n",
vsi->seid, vsi->base_vector);
return -EEXIST;
}
ret = i40e_alloc_q_vectors(vsi);
if (ret) {
dev_info(&pf->pdev->dev,
"failed to allocate %d q_vector for VSI %d, ret=%d\n",
vsi->num_q_vectors, vsi->seid, ret);
vsi->num_q_vectors = 0;
goto vector_setup_out;
}
if (vsi->num_q_vectors)
vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
vsi->num_q_vectors, vsi->idx);
if (vsi->base_vector < 0) {
dev_info(&pf->pdev->dev,
"failed to get q tracking for VSI %d, err=%d\n",
vsi->seid, vsi->base_vector);
i40e_vsi_free_q_vectors(vsi);
ret = -ENOENT;
goto vector_setup_out;
}
vector_setup_out:
return ret;
}
/**
* i40e_vsi_reinit_setup - return and reallocate resources for a VSI
* @vsi: pointer to the vsi.
*
* This re-allocates a vsi's queue resources.
*
* Returns pointer to the successfully allocated and configured VSI sw struct
* on success, otherwise returns NULL on failure.
**/
static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
{
struct i40e_pf *pf = vsi->back;
u8 enabled_tc;
int ret;
i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
i40e_vsi_clear_rings(vsi);
i40e_vsi_free_arrays(vsi, false);
i40e_set_num_rings_in_vsi(vsi);
ret = i40e_vsi_alloc_arrays(vsi, false);
if (ret)
goto err_vsi;
ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
if (ret < 0) {
dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
vsi->seid, ret);
goto err_vsi;
}
vsi->base_queue = ret;
/* Update the FW view of the VSI. Force a reset of TC and queue
* layout configurations.
*/
enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
/* assign it some queues */
ret = i40e_alloc_rings(vsi);
if (ret)
goto err_rings;
/* map all of the rings to the q_vectors */
i40e_vsi_map_rings_to_vectors(vsi);
return vsi;
err_rings:
i40e_vsi_free_q_vectors(vsi);
if (vsi->netdev_registered) {
vsi->netdev_registered = false;
unregister_netdev(vsi->netdev);
free_netdev(vsi->netdev);
vsi->netdev = NULL;
}
i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
err_vsi:
i40e_vsi_clear(vsi);
return NULL;
}
/**
* i40e_vsi_setup - Set up a VSI by a given type
* @pf: board private structure
* @type: VSI type
* @uplink_seid: the switch element to link to
* @param1: usage depends upon VSI type. For VF types, indicates VF id
*
* This allocates the sw VSI structure and its queue resources, then add a VSI
* to the identified VEB.
*
* Returns pointer to the successfully allocated and configure VSI sw struct on
* success, otherwise returns NULL on failure.
**/
struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
u16 uplink_seid, u32 param1)
{
struct i40e_vsi *vsi = NULL;
struct i40e_veb *veb = NULL;
int ret, i;
int v_idx;
/* The requested uplink_seid must be either
* - the PF's port seid
* no VEB is needed because this is the PF
* or this is a Flow Director special case VSI
* - seid of an existing VEB
* - seid of a VSI that owns an existing VEB
* - seid of a VSI that doesn't own a VEB
* a new VEB is created and the VSI becomes the owner
* - seid of the PF VSI, which is what creates the first VEB
* this is a special case of the previous
*
* Find which uplink_seid we were given and create a new VEB if needed
*/
for (i = 0; i < I40E_MAX_VEB; i++) {
if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
veb = pf->veb[i];
break;
}
}
if (!veb && uplink_seid != pf->mac_seid) {
for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
vsi = pf->vsi[i];
break;
}
}
if (!vsi) {
dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
uplink_seid);
return NULL;
}
if (vsi->uplink_seid == pf->mac_seid)
veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
vsi->tc_config.enabled_tc);
else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
vsi->tc_config.enabled_tc);
for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
veb = pf->veb[i];
}
if (!veb) {
dev_info(&pf->pdev->dev, "couldn't add VEB\n");
return NULL;
}
vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
uplink_seid = veb->seid;
}
/* get vsi sw struct */
v_idx = i40e_vsi_mem_alloc(pf, type);
if (v_idx < 0)
goto err_alloc;
vsi = pf->vsi[v_idx];
vsi->type = type;
vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
if (type == I40E_VSI_MAIN)
pf->lan_vsi = v_idx;
else if (type == I40E_VSI_SRIOV)
vsi->vf_id = param1;
/* assign it some queues */
ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
if (ret < 0) {
dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
vsi->seid, ret);
goto err_vsi;
}
vsi->base_queue = ret;
/* get a VSI from the hardware */
vsi->uplink_seid = uplink_seid;
ret = i40e_add_vsi(vsi);
if (ret)
goto err_vsi;
switch (vsi->type) {
/* setup the netdev if needed */
case I40E_VSI_MAIN:
case I40E_VSI_VMDQ2:
ret = i40e_config_netdev(vsi);
if (ret)
goto err_netdev;
ret = register_netdev(vsi->netdev);
if (ret)
goto err_netdev;
vsi->netdev_registered = true;
netif_carrier_off(vsi->netdev);
/* fall through */
case I40E_VSI_FDIR:
/* set up vectors and rings if needed */
ret = i40e_vsi_setup_vectors(vsi);
if (ret)
goto err_msix;
ret = i40e_alloc_rings(vsi);
if (ret)
goto err_rings;
/* map all of the rings to the q_vectors */
i40e_vsi_map_rings_to_vectors(vsi);
i40e_vsi_reset_stats(vsi);
break;
default:
/* no netdev or rings for the other VSI types */
break;
}
return vsi;
err_rings:
i40e_vsi_free_q_vectors(vsi);
err_msix:
if (vsi->netdev_registered) {
vsi->netdev_registered = false;
unregister_netdev(vsi->netdev);
free_netdev(vsi->netdev);
vsi->netdev = NULL;
}
err_netdev:
i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
err_vsi:
i40e_vsi_clear(vsi);
err_alloc:
return NULL;
}
/**
* i40e_veb_get_bw_info - Query VEB BW information
* @veb: the veb to query
*
* Query the Tx scheduler BW configuration data for given VEB
**/
static int i40e_veb_get_bw_info(struct i40e_veb *veb)
{
struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
struct i40e_pf *pf = veb->pf;
struct i40e_hw *hw = &pf->hw;
u32 tc_bw_max;
int ret = 0;
int i;
ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
&bw_data, NULL);
if (ret) {
dev_info(&pf->pdev->dev,
"query veb bw config failed, aq_err=%d\n",
hw->aq.asq_last_status);
goto out;
}
ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
&ets_data, NULL);
if (ret) {
dev_info(&pf->pdev->dev,
"query veb bw ets config failed, aq_err=%d\n",
hw->aq.asq_last_status);
goto out;
}
veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
veb->bw_max_quanta = ets_data.tc_bw_max;
veb->is_abs_credits = bw_data.absolute_credits_enable;
tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
(le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
veb->bw_tc_limit_credits[i] =
le16_to_cpu(bw_data.tc_bw_limits[i]);
veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
}
out:
return ret;
}
/**
* i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
* @pf: board private structure
*
* On error: returns error code (negative)
* On success: returns vsi index in PF (positive)
**/
static int i40e_veb_mem_alloc(struct i40e_pf *pf)
{
int ret = -ENOENT;
struct i40e_veb *veb;
int i;
/* Need to protect the allocation of switch elements at the PF level */
mutex_lock(&pf->switch_mutex);
/* VEB list may be fragmented if VEB creation/destruction has
* been happening. We can afford to do a quick scan to look
* for any free slots in the list.
*
* find next empty veb slot, looping back around if necessary
*/
i = 0;
while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
i++;
if (i >= I40E_MAX_VEB) {
ret = -ENOMEM;
goto err_alloc_veb; /* out of VEB slots! */
}
veb = kzalloc(sizeof(*veb), GFP_KERNEL);
if (!veb) {
ret = -ENOMEM;
goto err_alloc_veb;
}
veb->pf = pf;
veb->idx = i;
veb->enabled_tc = 1;
pf->veb[i] = veb;
ret = i;
err_alloc_veb:
mutex_unlock(&pf->switch_mutex);
return ret;
}
/**
* i40e_switch_branch_release - Delete a branch of the switch tree
* @branch: where to start deleting
*
* This uses recursion to find the tips of the branch to be
* removed, deleting until we get back to and can delete this VEB.
**/
static void i40e_switch_branch_release(struct i40e_veb *branch)
{
struct i40e_pf *pf = branch->pf;
u16 branch_seid = branch->seid;
u16 veb_idx = branch->idx;
int i;
/* release any VEBs on this VEB - RECURSION */
for (i = 0; i < I40E_MAX_VEB; i++) {
if (!pf->veb[i])
continue;
if (pf->veb[i]->uplink_seid == branch->seid)
i40e_switch_branch_release(pf->veb[i]);
}
/* Release the VSIs on this VEB, but not the owner VSI.
*
* NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
* the VEB itself, so don't use (*branch) after this loop.
*/
for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
if (!pf->vsi[i])
continue;
if (pf->vsi[i]->uplink_seid == branch_seid &&
(pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
i40e_vsi_release(pf->vsi[i]);
}
}
/* There's one corner case where the VEB might not have been
* removed, so double check it here and remove it if needed.
* This case happens if the veb was created from the debugfs
* commands and no VSIs were added to it.
*/
if (pf->veb[veb_idx])
i40e_veb_release(pf->veb[veb_idx]);
}
/**
* i40e_veb_clear - remove veb struct
* @veb: the veb to remove
**/
static void i40e_veb_clear(struct i40e_veb *veb)
{
if (!veb)
return;
if (veb->pf) {
struct i40e_pf *pf = veb->pf;
mutex_lock(&pf->switch_mutex);
if (pf->veb[veb->idx] == veb)
pf->veb[veb->idx] = NULL;
mutex_unlock(&pf->switch_mutex);
}
kfree(veb);
}
/**
* i40e_veb_release - Delete a VEB and free its resources
* @veb: the VEB being removed
**/
void i40e_veb_release(struct i40e_veb *veb)
{
struct i40e_vsi *vsi = NULL;
struct i40e_pf *pf;
int i, n = 0;
pf = veb->pf;
/* find the remaining VSI and check for extras */
for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
n++;
vsi = pf->vsi[i];
}
}
if (n != 1) {
dev_info(&pf->pdev->dev,
"can't remove VEB %d with %d VSIs left\n",
veb->seid, n);
return;
}
/* move the remaining VSI to uplink veb */
vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
if (veb->uplink_seid) {
vsi->uplink_seid = veb->uplink_seid;
if (veb->uplink_seid == pf->mac_seid)
vsi->veb_idx = I40E_NO_VEB;
else
vsi->veb_idx = veb->veb_idx;
} else {
/* floating VEB */
vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
}
i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
i40e_veb_clear(veb);
return;
}
/**
* i40e_add_veb - create the VEB in the switch
* @veb: the VEB to be instantiated
* @vsi: the controlling VSI
**/
static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
{
bool is_default = (vsi->idx == vsi->back->lan_vsi);
bool is_cloud = false;
int ret;
/* get a VEB from the hardware */
ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
veb->enabled_tc, is_default,
is_cloud, &veb->seid, NULL);
if (ret) {
dev_info(&veb->pf->pdev->dev,
"couldn't add VEB, err %d, aq_err %d\n",
ret, veb->pf->hw.aq.asq_last_status);
return -EPERM;
}
/* get statistics counter */
ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
&veb->stats_idx, NULL, NULL, NULL);
if (ret) {
dev_info(&veb->pf->pdev->dev,
"couldn't get VEB statistics idx, err %d, aq_err %d\n",
ret, veb->pf->hw.aq.asq_last_status);
return -EPERM;
}
ret = i40e_veb_get_bw_info(veb);
if (ret) {
dev_info(&veb->pf->pdev->dev,
"couldn't get VEB bw info, err %d, aq_err %d\n",
ret, veb->pf->hw.aq.asq_last_status);
i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
return -ENOENT;
}
vsi->uplink_seid = veb->seid;
vsi->veb_idx = veb->idx;
vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
return 0;
}
/**
* i40e_veb_setup - Set up a VEB
* @pf: board private structure
* @flags: VEB setup flags
* @uplink_seid: the switch element to link to
* @vsi_seid: the initial VSI seid
* @enabled_tc: Enabled TC bit-map
*
* This allocates the sw VEB structure and links it into the switch
* It is possible and legal for this to be a duplicate of an already
* existing VEB. It is also possible for both uplink and vsi seids
* to be zero, in order to create a floating VEB.
*
* Returns pointer to the successfully allocated VEB sw struct on
* success, otherwise returns NULL on failure.
**/
struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
u16 uplink_seid, u16 vsi_seid,
u8 enabled_tc)
{
struct i40e_veb *veb, *uplink_veb = NULL;
int vsi_idx, veb_idx;
int ret;
/* if one seid is 0, the other must be 0 to create a floating relay */
if ((uplink_seid == 0 || vsi_seid == 0) &&
(uplink_seid + vsi_seid != 0)) {
dev_info(&pf->pdev->dev,
"one, not both seid's are 0: uplink=%d vsi=%d\n",
uplink_seid, vsi_seid);
return NULL;
}
/* make sure there is such a vsi and uplink */
for (vsi_idx = 0; vsi_idx < pf->hw.func_caps.num_vsis; vsi_idx++)
if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
break;
if (vsi_idx >= pf->hw.func_caps.num_vsis && vsi_seid != 0) {
dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
vsi_seid);
return NULL;
}
if (uplink_seid && uplink_seid != pf->mac_seid) {
for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
if (pf->veb[veb_idx] &&
pf->veb[veb_idx]->seid == uplink_seid) {
uplink_veb = pf->veb[veb_idx];
break;
}
}
if (!uplink_veb) {
dev_info(&pf->pdev->dev,
"uplink seid %d not found\n", uplink_seid);
return NULL;
}
}
/* get veb sw struct */
veb_idx = i40e_veb_mem_alloc(pf);
if (veb_idx < 0)
goto err_alloc;
veb = pf->veb[veb_idx];
veb->flags = flags;
veb->uplink_seid = uplink_seid;
veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
/* create the VEB in the switch */
ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
if (ret)
goto err_veb;
return veb;
err_veb:
i40e_veb_clear(veb);
err_alloc:
return NULL;
}
/**
* i40e_setup_pf_switch_element - set pf vars based on switch type
* @pf: board private structure
* @ele: element we are building info from
* @num_reported: total number of elements
* @printconfig: should we print the contents
*
* helper function to assist in extracting a few useful SEID values.
**/
static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
struct i40e_aqc_switch_config_element_resp *ele,
u16 num_reported, bool printconfig)
{
u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
u8 element_type = ele->element_type;
u16 seid = le16_to_cpu(ele->seid);
if (printconfig)
dev_info(&pf->pdev->dev,
"type=%d seid=%d uplink=%d downlink=%d\n",
element_type, seid, uplink_seid, downlink_seid);
switch (element_type) {
case I40E_SWITCH_ELEMENT_TYPE_MAC:
pf->mac_seid = seid;
break;
case I40E_SWITCH_ELEMENT_TYPE_VEB:
/* Main VEB? */
if (uplink_seid != pf->mac_seid)
break;
if (pf->lan_veb == I40E_NO_VEB) {
int v;
/* find existing or else empty VEB */
for (v = 0; v < I40E_MAX_VEB; v++) {
if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
pf->lan_veb = v;
break;
}
}
if (pf->lan_veb == I40E_NO_VEB) {
v = i40e_veb_mem_alloc(pf);
if (v < 0)
break;
pf->lan_veb = v;
}
}
pf->veb[pf->lan_veb]->seid = seid;
pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
pf->veb[pf->lan_veb]->pf = pf;
pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
break;
case I40E_SWITCH_ELEMENT_TYPE_VSI:
if (num_reported != 1)
break;
/* This is immediately after a reset so we can assume this is
* the PF's VSI
*/
pf->mac_seid = uplink_seid;
pf->pf_seid = downlink_seid;
pf->main_vsi_seid = seid;
if (printconfig)
dev_info(&pf->pdev->dev,
"pf_seid=%d main_vsi_seid=%d\n",
pf->pf_seid, pf->main_vsi_seid);
break;
case I40E_SWITCH_ELEMENT_TYPE_PF:
case I40E_SWITCH_ELEMENT_TYPE_VF:
case I40E_SWITCH_ELEMENT_TYPE_EMP:
case I40E_SWITCH_ELEMENT_TYPE_BMC:
case I40E_SWITCH_ELEMENT_TYPE_PE:
case I40E_SWITCH_ELEMENT_TYPE_PA:
/* ignore these for now */
break;
default:
dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
element_type, seid);
break;
}
}
/**
* i40e_fetch_switch_configuration - Get switch config from firmware
* @pf: board private structure
* @printconfig: should we print the contents
*
* Get the current switch configuration from the device and
* extract a few useful SEID values.
**/
int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
{
struct i40e_aqc_get_switch_config_resp *sw_config;
u16 next_seid = 0;
int ret = 0;
u8 *aq_buf;
int i;
aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
if (!aq_buf)
return -ENOMEM;
sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
do {
u16 num_reported, num_total;
ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
I40E_AQ_LARGE_BUF,
&next_seid, NULL);
if (ret) {
dev_info(&pf->pdev->dev,
"get switch config failed %d aq_err=%x\n",
ret, pf->hw.aq.asq_last_status);
kfree(aq_buf);
return -ENOENT;
}
num_reported = le16_to_cpu(sw_config->header.num_reported);
num_total = le16_to_cpu(sw_config->header.num_total);
if (printconfig)
dev_info(&pf->pdev->dev,
"header: %d reported %d total\n",
num_reported, num_total);
if (num_reported) {
int sz = sizeof(*sw_config) * num_reported;
kfree(pf->sw_config);
pf->sw_config = kzalloc(sz, GFP_KERNEL);
if (pf->sw_config)
memcpy(pf->sw_config, sw_config, sz);
}
for (i = 0; i < num_reported; i++) {
struct i40e_aqc_switch_config_element_resp *ele =
&sw_config->element[i];
i40e_setup_pf_switch_element(pf, ele, num_reported,
printconfig);
}
} while (next_seid != 0);
kfree(aq_buf);
return ret;
}
/**
* i40e_setup_pf_switch - Setup the HW switch on startup or after reset
* @pf: board private structure
* @reinit: if the Main VSI needs to re-initialized.
*
* Returns 0 on success, negative value on failure
**/
static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
{
u32 rxfc = 0, txfc = 0, rxfc_reg;
int ret;
/* find out what's out there already */
ret = i40e_fetch_switch_configuration(pf, false);
if (ret) {
dev_info(&pf->pdev->dev,
"couldn't fetch switch config, err %d, aq_err %d\n",
ret, pf->hw.aq.asq_last_status);
return ret;
}
i40e_pf_reset_stats(pf);
/* fdir VSI must happen first to be sure it gets queue 0, but only
* if there is enough room for the fdir VSI
*/
if (pf->num_lan_qps > 1)
i40e_fdir_setup(pf);
/* first time setup */
if (pf->lan_vsi == I40E_NO_VSI || reinit) {
struct i40e_vsi *vsi = NULL;
u16 uplink_seid;
/* Set up the PF VSI associated with the PF's main VSI
* that is already in the HW switch
*/
if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
uplink_seid = pf->veb[pf->lan_veb]->seid;
else
uplink_seid = pf->mac_seid;
if (pf->lan_vsi == I40E_NO_VSI)
vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
else if (reinit)
vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
if (!vsi) {
dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
i40e_fdir_teardown(pf);
return -EAGAIN;
}
/* accommodate kcompat by copying the main VSI queue count
* into the pf, since this newer code pushes the pf queue
* info down a level into a VSI
*/
pf->num_rx_queues = vsi->num_queue_pairs;
pf->num_tx_queues = vsi->num_queue_pairs;
} else {
/* force a reset of TC and queue layout configurations */
u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
}
i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
/* Setup static PF queue filter control settings */
ret = i40e_setup_pf_filter_control(pf);
if (ret) {
dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
ret);
/* Failure here should not stop continuing other steps */
}
/* enable RSS in the HW, even for only one queue, as the stack can use
* the hash
*/
if ((pf->flags & I40E_FLAG_RSS_ENABLED))
i40e_config_rss(pf);
/* fill in link information and enable LSE reporting */
i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
i40e_link_event(pf);
/* Initialize user-specific link properties */
pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
I40E_AQ_AN_COMPLETED) ? true : false);
/* requested_mode is set in probe or by ethtool */
if (!pf->fc_autoneg_status)
goto no_autoneg;
if ((pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX) &&
(pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX))
pf->hw.fc.current_mode = I40E_FC_FULL;
else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX)
pf->hw.fc.current_mode = I40E_FC_TX_PAUSE;
else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX)
pf->hw.fc.current_mode = I40E_FC_RX_PAUSE;
else
pf->hw.fc.current_mode = I40E_FC_NONE;
/* sync the flow control settings with the auto-neg values */
switch (pf->hw.fc.current_mode) {
case I40E_FC_FULL:
txfc = 1;
rxfc = 1;
break;
case I40E_FC_TX_PAUSE:
txfc = 1;
rxfc = 0;
break;
case I40E_FC_RX_PAUSE:
txfc = 0;
rxfc = 1;
break;
case I40E_FC_NONE:
case I40E_FC_DEFAULT:
txfc = 0;
rxfc = 0;
break;
case I40E_FC_PFC:
/* TBD */
break;
/* no default case, we have to handle all possibilities here */
}
wr32(&pf->hw, I40E_PRTDCB_FCCFG, txfc << I40E_PRTDCB_FCCFG_TFCE_SHIFT);
rxfc_reg = rd32(&pf->hw, I40E_PRTDCB_MFLCN) &
~I40E_PRTDCB_MFLCN_RFCE_MASK;
rxfc_reg |= (rxfc << I40E_PRTDCB_MFLCN_RFCE_SHIFT);
wr32(&pf->hw, I40E_PRTDCB_MFLCN, rxfc_reg);
goto fc_complete;
no_autoneg:
/* disable L2 flow control, user can turn it on if they wish */
wr32(&pf->hw, I40E_PRTDCB_FCCFG, 0);
wr32(&pf->hw, I40E_PRTDCB_MFLCN, rd32(&pf->hw, I40E_PRTDCB_MFLCN) &
~I40E_PRTDCB_MFLCN_RFCE_MASK);
fc_complete:
return ret;
}
/**
* i40e_set_rss_size - helper to set rss_size
* @pf: board private structure
* @queues_left: how many queues
*/
static u16 i40e_set_rss_size(struct i40e_pf *pf, int queues_left)
{
int num_tc0;
num_tc0 = min_t(int, queues_left, pf->rss_size_max);
num_tc0 = min_t(int, num_tc0, num_online_cpus());
num_tc0 = rounddown_pow_of_two(num_tc0);
return num_tc0;
}
/**
* i40e_determine_queue_usage - Work out queue distribution
* @pf: board private structure
**/
static void i40e_determine_queue_usage(struct i40e_pf *pf)
{
int accum_tc_size;
int queues_left;
pf->num_lan_qps = 0;
pf->num_tc_qps = rounddown_pow_of_two(pf->num_tc_qps);
accum_tc_size = (I40E_MAX_TRAFFIC_CLASS - 1) * pf->num_tc_qps;
/* Find the max queues to be put into basic use. We'll always be
* using TC0, whether or not DCB is running, and TC0 will get the
* big RSS set.
*/
queues_left = pf->hw.func_caps.num_tx_qp;
if (!((pf->flags & I40E_FLAG_MSIX_ENABLED) &&
(pf->flags & I40E_FLAG_MQ_ENABLED)) ||
!(pf->flags & (I40E_FLAG_RSS_ENABLED |
I40E_FLAG_FDIR_ENABLED | I40E_FLAG_DCB_ENABLED)) ||
(queues_left == 1)) {
/* one qp for PF, no queues for anything else */
queues_left = 0;
pf->rss_size = pf->num_lan_qps = 1;
/* make sure all the fancies are disabled */
pf->flags &= ~(I40E_FLAG_RSS_ENABLED |
I40E_FLAG_MQ_ENABLED |
I40E_FLAG_FDIR_ENABLED |
I40E_FLAG_FDIR_ATR_ENABLED |
I40E_FLAG_DCB_ENABLED |
I40E_FLAG_SRIOV_ENABLED |
I40E_FLAG_VMDQ_ENABLED);
} else if (pf->flags & I40E_FLAG_RSS_ENABLED &&
!(pf->flags & I40E_FLAG_FDIR_ENABLED) &&
!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
pf->rss_size = i40e_set_rss_size(pf, queues_left);
queues_left -= pf->rss_size;
pf->num_lan_qps = pf->rss_size_max;
} else if (pf->flags & I40E_FLAG_RSS_ENABLED &&
!(pf->flags & I40E_FLAG_FDIR_ENABLED) &&
(pf->flags & I40E_FLAG_DCB_ENABLED)) {
/* save num_tc_qps queues for TCs 1 thru 7 and the rest
* are set up for RSS in TC0
*/
queues_left -= accum_tc_size;
pf->rss_size = i40e_set_rss_size(pf, queues_left);
queues_left -= pf->rss_size;
if (queues_left < 0) {
dev_info(&pf->pdev->dev, "not enough queues for DCB\n");
return;
}
pf->num_lan_qps = pf->rss_size_max + accum_tc_size;
} else if (pf->flags & I40E_FLAG_RSS_ENABLED &&
(pf->flags & I40E_FLAG_FDIR_ENABLED) &&
!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
queues_left -= 1; /* save 1 queue for FD */
pf->rss_size = i40e_set_rss_size(pf, queues_left);
queues_left -= pf->rss_size;
if (queues_left < 0) {
dev_info(&pf->pdev->dev, "not enough queues for Flow Director\n");
return;
}
pf->num_lan_qps = pf->rss_size_max;
} else if (pf->flags & I40E_FLAG_RSS_ENABLED &&
(pf->flags & I40E_FLAG_FDIR_ENABLED) &&
(pf->flags & I40E_FLAG_DCB_ENABLED)) {
/* save 1 queue for TCs 1 thru 7,
* 1 queue for flow director,
* and the rest are set up for RSS in TC0
*/
queues_left -= 1;
queues_left -= accum_tc_size;
pf->rss_size = i40e_set_rss_size(pf, queues_left);
queues_left -= pf->rss_size;
if (queues_left < 0) {
dev_info(&pf->pdev->dev, "not enough queues for DCB and Flow Director\n");
return;
}
pf->num_lan_qps = pf->rss_size_max + accum_tc_size;
} else {
dev_info(&pf->pdev->dev,
"Invalid configuration, flags=0x%08llx\n", pf->flags);
return;
}
if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
pf->num_vf_qps && pf->num_req_vfs && queues_left) {
pf->num_req_vfs = min_t(int, pf->num_req_vfs, (queues_left /
pf->num_vf_qps));
queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
}
if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
(queues_left / pf->num_vmdq_qps));
queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
}
pf->queues_left = queues_left;
return;
}
/**
* i40e_setup_pf_filter_control - Setup PF static filter control
* @pf: PF to be setup
*
* i40e_setup_pf_filter_control sets up a pf's initial filter control
* settings. If PE/FCoE are enabled then it will also set the per PF
* based filter sizes required for them. It also enables Flow director,
* ethertype and macvlan type filter settings for the pf.
*
* Returns 0 on success, negative on failure
**/
static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
{
struct i40e_filter_control_settings *settings = &pf->filter_settings;
settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
/* Flow Director is enabled */
if (pf->flags & (I40E_FLAG_FDIR_ENABLED | I40E_FLAG_FDIR_ATR_ENABLED))
settings->enable_fdir = true;
/* Ethtype and MACVLAN filters enabled for PF */
settings->enable_ethtype = true;
settings->enable_macvlan = true;
if (i40e_set_filter_control(&pf->hw, settings))
return -ENOENT;
return 0;
}
/**
* i40e_probe - Device initialization routine
* @pdev: PCI device information struct
* @ent: entry in i40e_pci_tbl
*
* i40e_probe initializes a pf identified by a pci_dev structure.
* The OS initialization, configuring of the pf private structure,
* and a hardware reset occur.
*
* Returns 0 on success, negative on failure
**/
static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct i40e_driver_version dv;
struct i40e_pf *pf;
struct i40e_hw *hw;
static u16 pfs_found;
u16 link_status;
int err = 0;
u32 len;
err = pci_enable_device_mem(pdev);
if (err)
return err;
/* set up for high or low dma */
if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
/* coherent mask for the same size will always succeed if
* dma_set_mask does
*/
dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
} else if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
} else {
dev_err(&pdev->dev, "DMA configuration failed: %d\n", err);
err = -EIO;
goto err_dma;
}
/* set up pci connections */
err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
IORESOURCE_MEM), i40e_driver_name);
if (err) {
dev_info(&pdev->dev,
"pci_request_selected_regions failed %d\n", err);
goto err_pci_reg;
}
pci_enable_pcie_error_reporting(pdev);
pci_set_master(pdev);
/* Now that we have a PCI connection, we need to do the
* low level device setup. This is primarily setting up
* the Admin Queue structures and then querying for the
* device's current profile information.
*/
pf = kzalloc(sizeof(*pf), GFP_KERNEL);
if (!pf) {
err = -ENOMEM;
goto err_pf_alloc;
}
pf->next_vsi = 0;
pf->pdev = pdev;
set_bit(__I40E_DOWN, &pf->state);
hw = &pf->hw;
hw->back = pf;
hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
pci_resource_len(pdev, 0));
if (!hw->hw_addr) {
err = -EIO;
dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
(unsigned int)pci_resource_start(pdev, 0),
(unsigned int)pci_resource_len(pdev, 0), err);
goto err_ioremap;
}
hw->vendor_id = pdev->vendor;
hw->device_id = pdev->device;
pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
hw->subsystem_vendor_id = pdev->subsystem_vendor;
hw->subsystem_device_id = pdev->subsystem_device;
hw->bus.device = PCI_SLOT(pdev->devfn);
hw->bus.func = PCI_FUNC(pdev->devfn);
pf->instance = pfs_found;
/* do a special CORER for clearing PXE mode once at init */
if (hw->revision_id == 0 &&
(rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
i40e_flush(hw);
msleep(200);
pf->corer_count++;
i40e_clear_pxe_mode(hw);
}
/* Reset here to make sure all is clean and to define PF 'n' */
err = i40e_pf_reset(hw);
if (err) {
dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
goto err_pf_reset;
}
pf->pfr_count++;
hw->aq.num_arq_entries = I40E_AQ_LEN;
hw->aq.num_asq_entries = I40E_AQ_LEN;
hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
snprintf(pf->misc_int_name, sizeof(pf->misc_int_name) - 1,
"%s-pf%d:misc",
dev_driver_string(&pf->pdev->dev), pf->hw.pf_id);
err = i40e_init_shared_code(hw);
if (err) {
dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
goto err_pf_reset;
}
/* set up a default setting for link flow control */
pf->hw.fc.requested_mode = I40E_FC_NONE;
err = i40e_init_adminq(hw);
dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
if (((hw->nvm.version & I40E_NVM_VERSION_HI_MASK)
>> I40E_NVM_VERSION_HI_SHIFT) != I40E_CURRENT_NVM_VERSION_HI) {
dev_info(&pdev->dev,
"warning: NVM version not supported, supported version: %02x.%02x\n",
I40E_CURRENT_NVM_VERSION_HI,
I40E_CURRENT_NVM_VERSION_LO);
}
if (err) {
dev_info(&pdev->dev,
"init_adminq failed: %d expecting API %02x.%02x\n",
err,
I40E_FW_API_VERSION_MAJOR, I40E_FW_API_VERSION_MINOR);
goto err_pf_reset;
}
err = i40e_get_capabilities(pf);
if (err)
goto err_adminq_setup;
err = i40e_sw_init(pf);
if (err) {
dev_info(&pdev->dev, "sw_init failed: %d\n", err);
goto err_sw_init;
}
err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
hw->func_caps.num_rx_qp,
pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
if (err) {
dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
goto err_init_lan_hmc;
}
err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
if (err) {
dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
err = -ENOENT;
goto err_configure_lan_hmc;
}
i40e_get_mac_addr(hw, hw->mac.addr);
if (i40e_validate_mac_addr(hw->mac.addr)) {
dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
err = -EIO;
goto err_mac_addr;
}
dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
memcpy(hw->mac.perm_addr, hw->mac.addr, ETH_ALEN);
pci_set_drvdata(pdev, pf);
pci_save_state(pdev);
/* set up periodic task facility */
setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
pf->service_timer_period = HZ;
INIT_WORK(&pf->service_task, i40e_service_task);
clear_bit(__I40E_SERVICE_SCHED, &pf->state);
pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
pf->link_check_timeout = jiffies;
/* WoL defaults to disabled */
pf->wol_en = false;
device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
/* set up the main switch operations */
i40e_determine_queue_usage(pf);
i40e_init_interrupt_scheme(pf);
/* Set up the *vsi struct based on the number of VSIs in the HW,
* and set up our local tracking of the MAIN PF vsi.
*/
len = sizeof(struct i40e_vsi *) * pf->hw.func_caps.num_vsis;
pf->vsi = kzalloc(len, GFP_KERNEL);
if (!pf->vsi) {
err = -ENOMEM;
goto err_switch_setup;
}
err = i40e_setup_pf_switch(pf, false);
if (err) {
dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
goto err_vsis;
}
/* The main driver is (mostly) up and happy. We need to set this state
* before setting up the misc vector or we get a race and the vector
* ends up disabled forever.
*/
clear_bit(__I40E_DOWN, &pf->state);
/* In case of MSIX we are going to setup the misc vector right here
* to handle admin queue events etc. In case of legacy and MSI
* the misc functionality and queue processing is combined in
* the same vector and that gets setup at open.
*/
if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
err = i40e_setup_misc_vector(pf);
if (err) {
dev_info(&pdev->dev,
"setup of misc vector failed: %d\n", err);
goto err_vsis;
}
}
/* prep for VF support */
if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
u32 val;
/* disable link interrupts for VFs */
val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
i40e_flush(hw);
}
pfs_found++;
i40e_dbg_pf_init(pf);
/* tell the firmware that we're starting */
dv.major_version = DRV_VERSION_MAJOR;
dv.minor_version = DRV_VERSION_MINOR;
dv.build_version = DRV_VERSION_BUILD;
dv.subbuild_version = 0;
i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
/* since everything's happy, start the service_task timer */
mod_timer(&pf->service_timer,
round_jiffies(jiffies + pf->service_timer_period));
/* Get the negotiated link width and speed from PCI config space */
pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
i40e_set_pci_config_data(hw, link_status);
dev_info(&pdev->dev, "PCI Express: %s %s\n",
(hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
"Unknown"),
(hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
"Unknown"));
if (hw->bus.width < i40e_bus_width_pcie_x8 ||
hw->bus.speed < i40e_bus_speed_8000) {
dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
}
return 0;
/* Unwind what we've done if something failed in the setup */
err_vsis:
set_bit(__I40E_DOWN, &pf->state);
err_switch_setup:
i40e_clear_interrupt_scheme(pf);
kfree(pf->vsi);
del_timer_sync(&pf->service_timer);
err_mac_addr:
err_configure_lan_hmc:
(void)i40e_shutdown_lan_hmc(hw);
err_init_lan_hmc:
kfree(pf->qp_pile);
kfree(pf->irq_pile);
err_sw_init:
err_adminq_setup:
(void)i40e_shutdown_adminq(hw);
err_pf_reset:
iounmap(hw->hw_addr);
err_ioremap:
kfree(pf);
err_pf_alloc:
pci_disable_pcie_error_reporting(pdev);
pci_release_selected_regions(pdev,
pci_select_bars(pdev, IORESOURCE_MEM));
err_pci_reg:
err_dma:
pci_disable_device(pdev);
return err;
}
/**
* i40e_remove - Device removal routine
* @pdev: PCI device information struct
*
* i40e_remove is called by the PCI subsystem to alert the driver
* that is should release a PCI device. This could be caused by a
* Hot-Plug event, or because the driver is going to be removed from
* memory.
**/
static void i40e_remove(struct pci_dev *pdev)
{
struct i40e_pf *pf = pci_get_drvdata(pdev);
i40e_status ret_code;
u32 reg;
int i;
i40e_dbg_pf_exit(pf);
if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
i40e_free_vfs(pf);
pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
}
/* no more scheduling of any task */
set_bit(__I40E_DOWN, &pf->state);
del_timer_sync(&pf->service_timer);
cancel_work_sync(&pf->service_task);
i40e_fdir_teardown(pf);
/* If there is a switch structure or any orphans, remove them.
* This will leave only the PF's VSI remaining.
*/
for (i = 0; i < I40E_MAX_VEB; i++) {
if (!pf->veb[i])
continue;
if (pf->veb[i]->uplink_seid == pf->mac_seid ||
pf->veb[i]->uplink_seid == 0)
i40e_switch_branch_release(pf->veb[i]);
}
/* Now we can shutdown the PF's VSI, just before we kill
* adminq and hmc.
*/
if (pf->vsi[pf->lan_vsi])
i40e_vsi_release(pf->vsi[pf->lan_vsi]);
i40e_stop_misc_vector(pf);
if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
synchronize_irq(pf->msix_entries[0].vector);
free_irq(pf->msix_entries[0].vector, pf);
}
/* shutdown and destroy the HMC */
ret_code = i40e_shutdown_lan_hmc(&pf->hw);
if (ret_code)
dev_warn(&pdev->dev,
"Failed to destroy the HMC resources: %d\n", ret_code);
/* shutdown the adminq */
i40e_aq_queue_shutdown(&pf->hw, true);
ret_code = i40e_shutdown_adminq(&pf->hw);
if (ret_code)
dev_warn(&pdev->dev,
"Failed to destroy the Admin Queue resources: %d\n",
ret_code);
/* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
i40e_clear_interrupt_scheme(pf);
for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
if (pf->vsi[i]) {
i40e_vsi_clear_rings(pf->vsi[i]);
i40e_vsi_clear(pf->vsi[i]);
pf->vsi[i] = NULL;
}
}
for (i = 0; i < I40E_MAX_VEB; i++) {
kfree(pf->veb[i]);
pf->veb[i] = NULL;
}
kfree(pf->qp_pile);
kfree(pf->irq_pile);
kfree(pf->sw_config);
kfree(pf->vsi);
/* force a PF reset to clean anything leftover */
reg = rd32(&pf->hw, I40E_PFGEN_CTRL);
wr32(&pf->hw, I40E_PFGEN_CTRL, (reg | I40E_PFGEN_CTRL_PFSWR_MASK));
i40e_flush(&pf->hw);
iounmap(pf->hw.hw_addr);
kfree(pf);
pci_release_selected_regions(pdev,
pci_select_bars(pdev, IORESOURCE_MEM));
pci_disable_pcie_error_reporting(pdev);
pci_disable_device(pdev);
}
/**
* i40e_pci_error_detected - warning that something funky happened in PCI land
* @pdev: PCI device information struct
*
* Called to warn that something happened and the error handling steps
* are in progress. Allows the driver to quiesce things, be ready for
* remediation.
**/
static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
enum pci_channel_state error)
{
struct i40e_pf *pf = pci_get_drvdata(pdev);
dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
/* shutdown all operations */
if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
rtnl_lock();
i40e_prep_for_reset(pf);
rtnl_unlock();
}
/* Request a slot reset */
return PCI_ERS_RESULT_NEED_RESET;
}
/**
* i40e_pci_error_slot_reset - a PCI slot reset just happened
* @pdev: PCI device information struct
*
* Called to find if the driver can work with the device now that
* the pci slot has been reset. If a basic connection seems good
* (registers are readable and have sane content) then return a
* happy little PCI_ERS_RESULT_xxx.
**/
static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
{
struct i40e_pf *pf = pci_get_drvdata(pdev);
pci_ers_result_t result;
int err;
u32 reg;
dev_info(&pdev->dev, "%s\n", __func__);
if (pci_enable_device_mem(pdev)) {
dev_info(&pdev->dev,
"Cannot re-enable PCI device after reset.\n");
result = PCI_ERS_RESULT_DISCONNECT;
} else {
pci_set_master(pdev);
pci_restore_state(pdev);
pci_save_state(pdev);
pci_wake_from_d3(pdev, false);
reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
if (reg == 0)
result = PCI_ERS_RESULT_RECOVERED;
else
result = PCI_ERS_RESULT_DISCONNECT;
}
err = pci_cleanup_aer_uncorrect_error_status(pdev);
if (err) {
dev_info(&pdev->dev,
"pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
err);
/* non-fatal, continue */
}
return result;
}
/**
* i40e_pci_error_resume - restart operations after PCI error recovery
* @pdev: PCI device information struct
*
* Called to allow the driver to bring things back up after PCI error
* and/or reset recovery has finished.
**/
static void i40e_pci_error_resume(struct pci_dev *pdev)
{
struct i40e_pf *pf = pci_get_drvdata(pdev);
dev_info(&pdev->dev, "%s\n", __func__);
if (test_bit(__I40E_SUSPENDED, &pf->state))
return;
rtnl_lock();
i40e_handle_reset_warning(pf);
rtnl_lock();
}
/**
* i40e_shutdown - PCI callback for shutting down
* @pdev: PCI device information struct
**/
static void i40e_shutdown(struct pci_dev *pdev)
{
struct i40e_pf *pf = pci_get_drvdata(pdev);
struct i40e_hw *hw = &pf->hw;
set_bit(__I40E_SUSPENDED, &pf->state);
set_bit(__I40E_DOWN, &pf->state);
rtnl_lock();
i40e_prep_for_reset(pf);
rtnl_unlock();
wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
if (system_state == SYSTEM_POWER_OFF) {
pci_wake_from_d3(pdev, pf->wol_en);
pci_set_power_state(pdev, PCI_D3hot);
}
}
#ifdef CONFIG_PM
/**
* i40e_suspend - PCI callback for moving to D3
* @pdev: PCI device information struct
**/
static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct i40e_pf *pf = pci_get_drvdata(pdev);
struct i40e_hw *hw = &pf->hw;
set_bit(__I40E_SUSPENDED, &pf->state);
set_bit(__I40E_DOWN, &pf->state);
rtnl_lock();
i40e_prep_for_reset(pf);
rtnl_unlock();
wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
pci_wake_from_d3(pdev, pf->wol_en);
pci_set_power_state(pdev, PCI_D3hot);
return 0;
}
/**
* i40e_resume - PCI callback for waking up from D3
* @pdev: PCI device information struct
**/
static int i40e_resume(struct pci_dev *pdev)
{
struct i40e_pf *pf = pci_get_drvdata(pdev);
u32 err;
pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev);
/* pci_restore_state() clears dev->state_saves, so
* call pci_save_state() again to restore it.
*/
pci_save_state(pdev);
err = pci_enable_device_mem(pdev);
if (err) {
dev_err(&pdev->dev,
"%s: Cannot enable PCI device from suspend\n",
__func__);
return err;
}
pci_set_master(pdev);
/* no wakeup events while running */
pci_wake_from_d3(pdev, false);
/* handling the reset will rebuild the device state */
if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
clear_bit(__I40E_DOWN, &pf->state);
rtnl_lock();
i40e_reset_and_rebuild(pf, false);
rtnl_unlock();
}
return 0;
}
#endif
static const struct pci_error_handlers i40e_err_handler = {
.error_detected = i40e_pci_error_detected,
.slot_reset = i40e_pci_error_slot_reset,
.resume = i40e_pci_error_resume,
};
static struct pci_driver i40e_driver = {
.name = i40e_driver_name,
.id_table = i40e_pci_tbl,
.probe = i40e_probe,
.remove = i40e_remove,
#ifdef CONFIG_PM
.suspend = i40e_suspend,
.resume = i40e_resume,
#endif
.shutdown = i40e_shutdown,
.err_handler = &i40e_err_handler,
.sriov_configure = i40e_pci_sriov_configure,
};
/**
* i40e_init_module - Driver registration routine
*
* i40e_init_module is the first routine called when the driver is
* loaded. All it does is register with the PCI subsystem.
**/
static int __init i40e_init_module(void)
{
pr_info("%s: %s - version %s\n", i40e_driver_name,
i40e_driver_string, i40e_driver_version_str);
pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
i40e_dbg_init();
return pci_register_driver(&i40e_driver);
}
module_init(i40e_init_module);
/**
* i40e_exit_module - Driver exit cleanup routine
*
* i40e_exit_module is called just before the driver is removed
* from memory.
**/
static void __exit i40e_exit_module(void)
{
pci_unregister_driver(&i40e_driver);
i40e_dbg_exit();
}
module_exit(i40e_exit_module);
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