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f657a6e131
linux-next/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
Greg Rose f657a6e131 i40e: Fix VF driver MAC address configuration 
Fix a problem where the 'ip link show' command would display stale
link address information after the link address was set via the 'ip
link set' command.  In addition, fix problem with the user being
allowed to overwrite the administratively set VF MAC address.

Change-Id: I669ed14e55f2b633ef7b456b713632b08468671c
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-01-06 02:57:05 -08:00

2104 lines
53 KiB
C
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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
*
******************************************************************************/
#include "i40e.h"
/***********************misc routines*****************************/
/**
* i40e_vc_isvalid_vsi_id
* @vf: pointer to the vf info
* @vsi_id: vf relative vsi id
*
* check for the valid vsi id
**/
static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u8 vsi_id)
{
struct i40e_pf *pf = vf->pf;
return pf->vsi[vsi_id]->vf_id == vf->vf_id;
}
/**
* i40e_vc_isvalid_queue_id
* @vf: pointer to the vf info
* @vsi_id: vsi id
* @qid: vsi relative queue id
*
* check for the valid queue id
**/
static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u8 vsi_id,
u8 qid)
{
struct i40e_pf *pf = vf->pf;
return qid < pf->vsi[vsi_id]->num_queue_pairs;
}
/**
* i40e_vc_isvalid_vector_id
* @vf: pointer to the vf info
* @vector_id: vf relative vector id
*
* check for the valid vector id
**/
static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u8 vector_id)
{
struct i40e_pf *pf = vf->pf;
return vector_id <= pf->hw.func_caps.num_msix_vectors_vf;
}
/***********************vf resource mgmt routines*****************/
/**
* i40e_vc_get_pf_queue_id
* @vf: pointer to the vf info
* @vsi_idx: index of VSI in PF struct
* @vsi_queue_id: vsi relative queue id
*
* return pf relative queue id
**/
static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u8 vsi_idx,
u8 vsi_queue_id)
{
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = pf->vsi[vsi_idx];
u16 pf_queue_id = I40E_QUEUE_END_OF_LIST;
if (le16_to_cpu(vsi->info.mapping_flags) &
I40E_AQ_VSI_QUE_MAP_NONCONTIG)
pf_queue_id =
le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]);
else
pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) +
vsi_queue_id;
return pf_queue_id;
}
/**
* i40e_config_irq_link_list
* @vf: pointer to the vf info
* @vsi_idx: index of VSI in PF struct
* @vecmap: irq map info
*
* configure irq link list from the map
**/
static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_idx,
struct i40e_virtchnl_vector_map *vecmap)
{
unsigned long linklistmap = 0, tempmap;
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
u16 vsi_queue_id, pf_queue_id;
enum i40e_queue_type qtype;
u16 next_q, vector_id;
u32 reg, reg_idx;
u16 itr_idx = 0;
vector_id = vecmap->vector_id;
/* setup the head */
if (0 == vector_id)
reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
else
reg_idx = I40E_VPINT_LNKLSTN(
(pf->hw.func_caps.num_msix_vectors_vf
* vf->vf_id) + (vector_id - 1));
if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) {
/* Special case - No queues mapped on this vector */
wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK);
goto irq_list_done;
}
tempmap = vecmap->rxq_map;
for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
linklistmap |= (1 <<
(I40E_VIRTCHNL_SUPPORTED_QTYPES *
vsi_queue_id));
}
tempmap = vecmap->txq_map;
for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
linklistmap |= (1 <<
(I40E_VIRTCHNL_SUPPORTED_QTYPES * vsi_queue_id
+ 1));
}
next_q = find_first_bit(&linklistmap,
(I40E_MAX_VSI_QP *
I40E_VIRTCHNL_SUPPORTED_QTYPES));
vsi_queue_id = next_q/I40E_VIRTCHNL_SUPPORTED_QTYPES;
qtype = next_q%I40E_VIRTCHNL_SUPPORTED_QTYPES;
pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_idx, vsi_queue_id);
reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id);
wr32(hw, reg_idx, reg);
while (next_q < (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) {
switch (qtype) {
case I40E_QUEUE_TYPE_RX:
reg_idx = I40E_QINT_RQCTL(pf_queue_id);
itr_idx = vecmap->rxitr_idx;
break;
case I40E_QUEUE_TYPE_TX:
reg_idx = I40E_QINT_TQCTL(pf_queue_id);
itr_idx = vecmap->txitr_idx;
break;
default:
break;
}
next_q = find_next_bit(&linklistmap,
(I40E_MAX_VSI_QP *
I40E_VIRTCHNL_SUPPORTED_QTYPES),
next_q + 1);
if (next_q < (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) {
vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_idx,
vsi_queue_id);
} else {
pf_queue_id = I40E_QUEUE_END_OF_LIST;
qtype = 0;
}
/* format for the RQCTL & TQCTL regs is same */
reg = (vector_id) |
(qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) |
(pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
(1 << I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) |
(itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT);
wr32(hw, reg_idx, reg);
}
irq_list_done:
i40e_flush(hw);
}
/**
* i40e_config_vsi_tx_queue
* @vf: pointer to the vf info
* @vsi_idx: index of VSI in PF struct
* @vsi_queue_id: vsi relative queue index
* @info: config. info
*
* configure tx queue
**/
static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_idx,
u16 vsi_queue_id,
struct i40e_virtchnl_txq_info *info)
{
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
struct i40e_hmc_obj_txq tx_ctx;
u16 pf_queue_id;
u32 qtx_ctl;
int ret = 0;
pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_idx, vsi_queue_id);
/* clear the context structure first */
memset(&tx_ctx, 0, sizeof(struct i40e_hmc_obj_txq));
/* only set the required fields */
tx_ctx.base = info->dma_ring_addr / 128;
tx_ctx.qlen = info->ring_len;
tx_ctx.rdylist = le16_to_cpu(pf->vsi[vsi_idx]->info.qs_handle[0]);
tx_ctx.rdylist_act = 0;
/* clear the context in the HMC */
ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id);
if (ret) {
dev_err(&pf->pdev->dev,
"Failed to clear VF LAN Tx queue context %d, error: %d\n",
pf_queue_id, ret);
ret = -ENOENT;
goto error_context;
}
/* set the context in the HMC */
ret = i40e_set_lan_tx_queue_context(hw, pf_queue_id, &tx_ctx);
if (ret) {
dev_err(&pf->pdev->dev,
"Failed to set VF LAN Tx queue context %d error: %d\n",
pf_queue_id, ret);
ret = -ENOENT;
goto error_context;
}
/* associate this queue with the PCI VF function */
qtx_ctl = I40E_QTX_CTL_VF_QUEUE;
qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT)
& I40E_QTX_CTL_PF_INDX_MASK);
qtx_ctl |= (((vf->vf_id + hw->func_caps.vf_base_id)
<< I40E_QTX_CTL_VFVM_INDX_SHIFT)
& I40E_QTX_CTL_VFVM_INDX_MASK);
wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl);
i40e_flush(hw);
error_context:
return ret;
}
/**
* i40e_config_vsi_rx_queue
* @vf: pointer to the vf info
* @vsi_idx: index of VSI in PF struct
* @vsi_queue_id: vsi relative queue index
* @info: config. info
*
* configure rx queue
**/
static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_idx,
u16 vsi_queue_id,
struct i40e_virtchnl_rxq_info *info)
{
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
struct i40e_hmc_obj_rxq rx_ctx;
u16 pf_queue_id;
int ret = 0;
pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_idx, vsi_queue_id);
/* clear the context structure first */
memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq));
/* only set the required fields */
rx_ctx.base = info->dma_ring_addr / 128;
rx_ctx.qlen = info->ring_len;
if (info->splithdr_enabled) {
rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 |
I40E_RX_SPLIT_IP |
I40E_RX_SPLIT_TCP_UDP |
I40E_RX_SPLIT_SCTP;
/* header length validation */
if (info->hdr_size > ((2 * 1024) - 64)) {
ret = -EINVAL;
goto error_param;
}
rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT;
/* set splitalways mode 10b */
rx_ctx.dtype = 0x2;
}
/* databuffer length validation */
if (info->databuffer_size > ((16 * 1024) - 128)) {
ret = -EINVAL;
goto error_param;
}
rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT;
/* max pkt. length validation */
if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) {
ret = -EINVAL;
goto error_param;
}
rx_ctx.rxmax = info->max_pkt_size;
/* enable 32bytes desc always */
rx_ctx.dsize = 1;
/* default values */
rx_ctx.tphrdesc_ena = 1;
rx_ctx.tphwdesc_ena = 1;
rx_ctx.tphdata_ena = 1;
rx_ctx.tphhead_ena = 1;
rx_ctx.lrxqthresh = 2;
rx_ctx.crcstrip = 1;
/* clear the context in the HMC */
ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id);
if (ret) {
dev_err(&pf->pdev->dev,
"Failed to clear VF LAN Rx queue context %d, error: %d\n",
pf_queue_id, ret);
ret = -ENOENT;
goto error_param;
}
/* set the context in the HMC */
ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx);
if (ret) {
dev_err(&pf->pdev->dev,
"Failed to set VF LAN Rx queue context %d error: %d\n",
pf_queue_id, ret);
ret = -ENOENT;
goto error_param;
}
error_param:
return ret;
}
/**
* i40e_alloc_vsi_res
* @vf: pointer to the vf info
* @type: type of VSI to allocate
*
* alloc vf vsi context & resources
**/
static int i40e_alloc_vsi_res(struct i40e_vf *vf, enum i40e_vsi_type type)
{
struct i40e_mac_filter *f = NULL;
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
struct i40e_vsi *vsi;
int ret = 0;
vsi = i40e_vsi_setup(pf, type, pf->vsi[pf->lan_vsi]->seid, vf->vf_id);
if (!vsi) {
dev_err(&pf->pdev->dev,
"add vsi failed for vf %d, aq_err %d\n",
vf->vf_id, pf->hw.aq.asq_last_status);
ret = -ENOENT;
goto error_alloc_vsi_res;
}
if (type == I40E_VSI_SRIOV) {
vf->lan_vsi_index = vsi->idx;
vf->lan_vsi_id = vsi->id;
dev_info(&pf->pdev->dev,
"LAN VSI index %d, VSI id %d\n",
vsi->idx, vsi->id);
/* If the port VLAN has been configured and then the
* VF driver was removed then the VSI port VLAN
* configuration was destroyed. Check if there is
* a port VLAN and restore the VSI configuration if
* needed.
*/
if (vf->port_vlan_id)
i40e_vsi_add_pvid(vsi, vf->port_vlan_id);
f = i40e_add_filter(vsi, vf->default_lan_addr.addr,
vf->port_vlan_id, true, false);
}
if (!f) {
dev_err(&pf->pdev->dev, "Unable to add ucast filter\n");
ret = -ENOMEM;
goto error_alloc_vsi_res;
}
/* program mac filter */
ret = i40e_sync_vsi_filters(vsi);
if (ret) {
dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
goto error_alloc_vsi_res;
}
/* accept bcast pkts. by default */
ret = i40e_aq_set_vsi_broadcast(hw, vsi->seid, true, NULL);
if (ret) {
dev_err(&pf->pdev->dev,
"set vsi bcast failed for vf %d, vsi %d, aq_err %d\n",
vf->vf_id, vsi->idx, pf->hw.aq.asq_last_status);
ret = -EINVAL;
}
error_alloc_vsi_res:
return ret;
}
/**
* i40e_enable_vf_mappings
* @vf: pointer to the vf info
*
* enable vf mappings
**/
static void i40e_enable_vf_mappings(struct i40e_vf *vf)
{
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
u32 reg, total_queue_pairs = 0;
int j;
/* Tell the hardware we're using noncontiguous mapping. HW requires
* that VF queues be mapped using this method, even when they are
* contiguous in real life
*/
wr32(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id),
I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK);
/* enable VF vplan_qtable mappings */
reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK;
wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg);
/* map PF queues to VF queues */
for (j = 0; j < pf->vsi[vf->lan_vsi_index]->num_queue_pairs; j++) {
u16 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_index, j);
reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK);
wr32(hw, I40E_VPLAN_QTABLE(total_queue_pairs, vf->vf_id), reg);
total_queue_pairs++;
}
/* map PF queues to VSI */
for (j = 0; j < 7; j++) {
if (j * 2 >= pf->vsi[vf->lan_vsi_index]->num_queue_pairs) {
reg = 0x07FF07FF; /* unused */
} else {
u16 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_index,
j * 2);
reg = qid;
qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_index,
(j * 2) + 1);
reg |= qid << 16;
}
wr32(hw, I40E_VSILAN_QTABLE(j, vf->lan_vsi_id), reg);
}
i40e_flush(hw);
}
/**
* i40e_disable_vf_mappings
* @vf: pointer to the vf info
*
* disable vf mappings
**/
static void i40e_disable_vf_mappings(struct i40e_vf *vf)
{
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
int i;
/* disable qp mappings */
wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0);
for (i = 0; i < I40E_MAX_VSI_QP; i++)
wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id),
I40E_QUEUE_END_OF_LIST);
i40e_flush(hw);
}
/**
* i40e_free_vf_res
* @vf: pointer to the vf info
*
* free vf resources
**/
static void i40e_free_vf_res(struct i40e_vf *vf)
{
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
u32 reg_idx, reg;
int i, msix_vf;
/* free vsi & disconnect it from the parent uplink */
if (vf->lan_vsi_index) {
i40e_vsi_release(pf->vsi[vf->lan_vsi_index]);
vf->lan_vsi_index = 0;
vf->lan_vsi_id = 0;
}
msix_vf = pf->hw.func_caps.num_msix_vectors_vf + 1;
/* disable interrupts so the VF starts in a known state */
for (i = 0; i < msix_vf; i++) {
/* format is same for both registers */
if (0 == i)
reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id);
else
reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) *
(vf->vf_id))
+ (i - 1));
wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
i40e_flush(hw);
}
/* clear the irq settings */
for (i = 0; i < msix_vf; i++) {
/* format is same for both registers */
if (0 == i)
reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
else
reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) *
(vf->vf_id))
+ (i - 1));
reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK |
I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK);
wr32(hw, reg_idx, reg);
i40e_flush(hw);
}
/* reset some of the state varibles keeping
* track of the resources
*/
vf->num_queue_pairs = 0;
vf->vf_states = 0;
}
/**
* i40e_alloc_vf_res
* @vf: pointer to the vf info
*
* allocate vf resources
**/
static int i40e_alloc_vf_res(struct i40e_vf *vf)
{
struct i40e_pf *pf = vf->pf;
int total_queue_pairs = 0;
int ret;
/* allocate hw vsi context & associated resources */
ret = i40e_alloc_vsi_res(vf, I40E_VSI_SRIOV);
if (ret)
goto error_alloc;
total_queue_pairs += pf->vsi[vf->lan_vsi_index]->num_queue_pairs;
set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
/* store the total qps number for the runtime
* vf req validation
*/
vf->num_queue_pairs = total_queue_pairs;
/* vf is now completely initialized */
set_bit(I40E_VF_STAT_INIT, &vf->vf_states);
error_alloc:
if (ret)
i40e_free_vf_res(vf);
return ret;
}
#define VF_DEVICE_STATUS 0xAA
#define VF_TRANS_PENDING_MASK 0x20
/**
* i40e_quiesce_vf_pci
* @vf: pointer to the vf structure
*
* Wait for VF PCI transactions to be cleared after reset. Returns -EIO
* if the transactions never clear.
**/
static int i40e_quiesce_vf_pci(struct i40e_vf *vf)
{
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
int vf_abs_id, i;
u32 reg;
vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;
wr32(hw, I40E_PF_PCI_CIAA,
VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT));
for (i = 0; i < 100; i++) {
reg = rd32(hw, I40E_PF_PCI_CIAD);
if ((reg & VF_TRANS_PENDING_MASK) == 0)
return 0;
udelay(1);
}
return -EIO;
}
/**
* i40e_reset_vf
* @vf: pointer to the vf structure
* @flr: VFLR was issued or not
*
* reset the vf
**/
void i40e_reset_vf(struct i40e_vf *vf, bool flr)
{
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
bool rsd = false;
int i;
u32 reg;
/* warn the VF */
clear_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states);
/* In the case of a VFLR, the HW has already reset the VF and we
* just need to clean up, so don't hit the VFRTRIG register.
*/
if (!flr) {
/* reset vf using VPGEN_VFRTRIG reg */
reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
i40e_flush(hw);
}
if (i40e_quiesce_vf_pci(vf))
dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n",
vf->vf_id);
/* poll VPGEN_VFRSTAT reg to make sure
* that reset is complete
*/
for (i = 0; i < 100; i++) {
/* vf reset requires driver to first reset the
* vf & than poll the status register to make sure
* that the requested op was completed
* successfully
*/
udelay(10);
reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) {
rsd = true;
break;
}
}
if (!rsd)
dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
vf->vf_id);
wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), I40E_VFR_COMPLETED);
/* clear the reset bit in the VPGEN_VFRTRIG reg */
reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
/* On initial reset, we won't have any queues */
if (vf->lan_vsi_index == 0)
goto complete_reset;
i40e_vsi_control_rings(pf->vsi[vf->lan_vsi_index], false);
complete_reset:
/* reallocate vf resources to reset the VSI state */
i40e_free_vf_res(vf);
mdelay(10);
i40e_alloc_vf_res(vf);
i40e_enable_vf_mappings(vf);
/* tell the VF the reset is done */
wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), I40E_VFR_VFACTIVE);
i40e_flush(hw);
}
/**
* i40e_vfs_are_assigned
* @pf: pointer to the pf structure
*
* Determine if any VFs are assigned to VMs
**/
static bool i40e_vfs_are_assigned(struct i40e_pf *pf)
{
struct pci_dev *pdev = pf->pdev;
struct pci_dev *vfdev;
/* loop through all the VFs to see if we own any that are assigned */
vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, I40E_VF_DEVICE_ID , NULL);
while (vfdev) {
/* if we don't own it we don't care */
if (vfdev->is_virtfn && pci_physfn(vfdev) == pdev) {
/* if it is assigned we cannot release it */
if (vfdev->dev_flags & PCI_DEV_FLAGS_ASSIGNED)
return true;
}
vfdev = pci_get_device(PCI_VENDOR_ID_INTEL,
I40E_VF_DEVICE_ID,
vfdev);
}
return false;
}
/**
* i40e_free_vfs
* @pf: pointer to the pf structure
*
* free vf resources
**/
void i40e_free_vfs(struct i40e_pf *pf)
{
struct i40e_hw *hw = &pf->hw;
u32 reg_idx, bit_idx;
int i, tmp, vf_id;
if (!pf->vf)
return;
/* Disable interrupt 0 so we don't try to handle the VFLR. */
i40e_irq_dynamic_disable_icr0(pf);
mdelay(10); /* let any messages in transit get finished up */
/* free up vf resources */
tmp = pf->num_alloc_vfs;
pf->num_alloc_vfs = 0;
for (i = 0; i < tmp; i++) {
if (test_bit(I40E_VF_STAT_INIT, &pf->vf[i].vf_states))
i40e_free_vf_res(&pf->vf[i]);
/* disable qp mappings */
i40e_disable_vf_mappings(&pf->vf[i]);
}
kfree(pf->vf);
pf->vf = NULL;
if (!i40e_vfs_are_assigned(pf)) {
pci_disable_sriov(pf->pdev);
/* Acknowledge VFLR for all VFS. Without this, VFs will fail to
* work correctly when SR-IOV gets re-enabled.
*/
for (vf_id = 0; vf_id < tmp; vf_id++) {
reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), (1 << bit_idx));
}
}
else
dev_warn(&pf->pdev->dev,
"unable to disable SR-IOV because VFs are assigned.\n");
/* Re-enable interrupt 0. */
i40e_irq_dynamic_enable_icr0(pf);
}
#ifdef CONFIG_PCI_IOV
/**
* i40e_alloc_vfs
* @pf: pointer to the pf structure
* @num_alloc_vfs: number of vfs to allocate
*
* allocate vf resources
**/
static int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
{
struct i40e_vf *vfs;
int i, ret = 0;
/* Disable interrupt 0 so we don't try to handle the VFLR. */
i40e_irq_dynamic_disable_icr0(pf);
ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
if (ret) {
dev_err(&pf->pdev->dev,
"pci_enable_sriov failed with error %d!\n", ret);
pf->num_alloc_vfs = 0;
goto err_iov;
}
/* allocate memory */
vfs = kzalloc(num_alloc_vfs * sizeof(struct i40e_vf), GFP_KERNEL);
if (!vfs) {
ret = -ENOMEM;
goto err_alloc;
}
/* apply default profile */
for (i = 0; i < num_alloc_vfs; i++) {
vfs[i].pf = pf;
vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB;
vfs[i].vf_id = i;
/* assign default capabilities */
set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps);
/* vf resources get allocated during reset */
i40e_reset_vf(&vfs[i], false);
/* enable vf vplan_qtable mappings */
i40e_enable_vf_mappings(&vfs[i]);
}
pf->vf = vfs;
pf->num_alloc_vfs = num_alloc_vfs;
err_alloc:
if (ret)
i40e_free_vfs(pf);
err_iov:
/* Re-enable interrupt 0. */
i40e_irq_dynamic_enable_icr0(pf);
return ret;
}
#endif
/**
* i40e_pci_sriov_enable
* @pdev: pointer to a pci_dev structure
* @num_vfs: number of vfs to allocate
*
* Enable or change the number of VFs
**/
static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs)
{
#ifdef CONFIG_PCI_IOV
struct i40e_pf *pf = pci_get_drvdata(pdev);
int pre_existing_vfs = pci_num_vf(pdev);
int err = 0;
dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs);
if (pre_existing_vfs && pre_existing_vfs != num_vfs)
i40e_free_vfs(pf);
else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
goto out;
if (num_vfs > pf->num_req_vfs) {
err = -EPERM;
goto err_out;
}
err = i40e_alloc_vfs(pf, num_vfs);
if (err) {
dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err);
goto err_out;
}
out:
return num_vfs;
err_out:
return err;
#endif
return 0;
}
/**
* i40e_pci_sriov_configure
* @pdev: pointer to a pci_dev structure
* @num_vfs: number of vfs to allocate
*
* Enable or change the number of VFs. Called when the user updates the number
* of VFs in sysfs.
**/
int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
{
struct i40e_pf *pf = pci_get_drvdata(pdev);
if (num_vfs)
return i40e_pci_sriov_enable(pdev, num_vfs);
i40e_free_vfs(pf);
return 0;
}
/***********************virtual channel routines******************/
/**
* i40e_vc_send_msg_to_vf
* @vf: pointer to the vf info
* @v_opcode: virtual channel opcode
* @v_retval: virtual channel return value
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* send msg to vf
**/
static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode,
u32 v_retval, u8 *msg, u16 msglen)
{
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
int true_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
i40e_status aq_ret;
/* single place to detect unsuccessful return values */
if (v_retval) {
vf->num_invalid_msgs++;
dev_err(&pf->pdev->dev, "Failed opcode %d Error: %d\n",
v_opcode, v_retval);
if (vf->num_invalid_msgs >
I40E_DEFAULT_NUM_INVALID_MSGS_ALLOWED) {
dev_err(&pf->pdev->dev,
"Number of invalid messages exceeded for VF %d\n",
vf->vf_id);
dev_err(&pf->pdev->dev, "Use PF Control I/F to enable the VF\n");
set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
}
} else {
vf->num_valid_msgs++;
}
aq_ret = i40e_aq_send_msg_to_vf(hw, true_vf_id, v_opcode, v_retval,
msg, msglen, NULL);
if (aq_ret) {
dev_err(&pf->pdev->dev,
"Unable to send the message to VF %d aq_err %d\n",
vf->vf_id, pf->hw.aq.asq_last_status);
return -EIO;
}
return 0;
}
/**
* i40e_vc_send_resp_to_vf
* @vf: pointer to the vf info
* @opcode: operation code
* @retval: return value
*
* send resp msg to vf
**/
static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf,
enum i40e_virtchnl_ops opcode,
i40e_status retval)
{
return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0);
}
/**
* i40e_vc_get_version_msg
* @vf: pointer to the vf info
*
* called from the vf to request the API version used by the PF
**/
static int i40e_vc_get_version_msg(struct i40e_vf *vf)
{
struct i40e_virtchnl_version_info info = {
I40E_VIRTCHNL_VERSION_MAJOR, I40E_VIRTCHNL_VERSION_MINOR
};
return i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_VERSION,
I40E_SUCCESS, (u8 *)&info,
sizeof(struct
i40e_virtchnl_version_info));
}
/**
* i40e_vc_get_vf_resources_msg
* @vf: pointer to the vf info
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* called from the vf to request its resources
**/
static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf)
{
struct i40e_virtchnl_vf_resource *vfres = NULL;
struct i40e_pf *pf = vf->pf;
i40e_status aq_ret = 0;
struct i40e_vsi *vsi;
int i = 0, len = 0;
int num_vsis = 1;
int ret;
if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
aq_ret = I40E_ERR_PARAM;
goto err;
}
len = (sizeof(struct i40e_virtchnl_vf_resource) +
sizeof(struct i40e_virtchnl_vsi_resource) * num_vsis);
vfres = kzalloc(len, GFP_KERNEL);
if (!vfres) {
aq_ret = I40E_ERR_NO_MEMORY;
len = 0;
goto err;
}
vfres->vf_offload_flags = I40E_VIRTCHNL_VF_OFFLOAD_L2;
vsi = pf->vsi[vf->lan_vsi_index];
if (!vsi->info.pvid)
vfres->vf_offload_flags |= I40E_VIRTCHNL_VF_OFFLOAD_VLAN;
vfres->num_vsis = num_vsis;
vfres->num_queue_pairs = vf->num_queue_pairs;
vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;
if (vf->lan_vsi_index) {
vfres->vsi_res[i].vsi_id = vf->lan_vsi_index;
vfres->vsi_res[i].vsi_type = I40E_VSI_SRIOV;
vfres->vsi_res[i].num_queue_pairs =
pf->vsi[vf->lan_vsi_index]->num_queue_pairs;
memcpy(vfres->vsi_res[i].default_mac_addr,
vf->default_lan_addr.addr, ETH_ALEN);
i++;
}
set_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states);
err:
/* send the response back to the vf */
ret = i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_GET_VF_RESOURCES,
aq_ret, (u8 *)vfres, len);
kfree(vfres);
return ret;
}
/**
* i40e_vc_reset_vf_msg
* @vf: pointer to the vf info
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* called from the vf to reset itself,
* unlike other virtchnl messages, pf driver
* doesn't send the response back to the vf
**/
static void i40e_vc_reset_vf_msg(struct i40e_vf *vf)
{
if (test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states))
i40e_reset_vf(vf, false);
}
/**
* i40e_vc_config_promiscuous_mode_msg
* @vf: pointer to the vf info
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* called from the vf to configure the promiscuous mode of
* vf vsis
**/
static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf,
u8 *msg, u16 msglen)
{
struct i40e_virtchnl_promisc_info *info =
(struct i40e_virtchnl_promisc_info *)msg;
struct i40e_pf *pf = vf->pf;
struct i40e_hw *hw = &pf->hw;
bool allmulti = false;
bool promisc = false;
i40e_status aq_ret;
if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
!i40e_vc_isvalid_vsi_id(vf, info->vsi_id) ||
(pf->vsi[info->vsi_id]->type != I40E_VSI_FCOE)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
if (info->flags & I40E_FLAG_VF_UNICAST_PROMISC)
promisc = true;
aq_ret = i40e_aq_set_vsi_unicast_promiscuous(hw, info->vsi_id,
promisc, NULL);
if (aq_ret)
goto error_param;
if (info->flags & I40E_FLAG_VF_MULTICAST_PROMISC)
allmulti = true;
aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, info->vsi_id,
allmulti, NULL);
error_param:
/* send the response to the vf */
return i40e_vc_send_resp_to_vf(vf,
I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
aq_ret);
}
/**
* i40e_vc_config_queues_msg
* @vf: pointer to the vf info
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* called from the vf to configure the rx/tx
* queues
**/
static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
struct i40e_virtchnl_vsi_queue_config_info *qci =
(struct i40e_virtchnl_vsi_queue_config_info *)msg;
struct i40e_virtchnl_queue_pair_info *qpi;
u16 vsi_id, vsi_queue_id;
i40e_status aq_ret = 0;
int i;
if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
vsi_id = qci->vsi_id;
if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
for (i = 0; i < qci->num_queue_pairs; i++) {
qpi = &qci->qpair[i];
vsi_queue_id = qpi->txq.queue_id;
if ((qpi->txq.vsi_id != vsi_id) ||
(qpi->rxq.vsi_id != vsi_id) ||
(qpi->rxq.queue_id != vsi_queue_id) ||
!i40e_vc_isvalid_queue_id(vf, vsi_id, vsi_queue_id)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id,
&qpi->rxq) ||
i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id,
&qpi->txq)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
}
error_param:
/* send the response to the vf */
return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES,
aq_ret);
}
/**
* i40e_vc_config_irq_map_msg
* @vf: pointer to the vf info
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* called from the vf to configure the irq to
* queue map
**/
static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
struct i40e_virtchnl_irq_map_info *irqmap_info =
(struct i40e_virtchnl_irq_map_info *)msg;
struct i40e_virtchnl_vector_map *map;
u16 vsi_id, vsi_queue_id, vector_id;
i40e_status aq_ret = 0;
unsigned long tempmap;
int i;
if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
for (i = 0; i < irqmap_info->num_vectors; i++) {
map = &irqmap_info->vecmap[i];
vector_id = map->vector_id;
vsi_id = map->vsi_id;
/* validate msg params */
if (!i40e_vc_isvalid_vector_id(vf, vector_id) ||
!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
/* lookout for the invalid queue index */
tempmap = map->rxq_map;
for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
vsi_queue_id)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
}
tempmap = map->txq_map;
for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
vsi_queue_id)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
}
i40e_config_irq_link_list(vf, vsi_id, map);
}
error_param:
/* send the response to the vf */
return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP,
aq_ret);
}
/**
* i40e_vc_enable_queues_msg
* @vf: pointer to the vf info
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* called from the vf to enable all or specific queue(s)
**/
static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
struct i40e_virtchnl_queue_select *vqs =
(struct i40e_virtchnl_queue_select *)msg;
struct i40e_pf *pf = vf->pf;
u16 vsi_id = vqs->vsi_id;
i40e_status aq_ret = 0;
if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
if (i40e_vsi_control_rings(pf->vsi[vsi_id], true))
aq_ret = I40E_ERR_TIMEOUT;
error_param:
/* send the response to the vf */
return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ENABLE_QUEUES,
aq_ret);
}
/**
* i40e_vc_disable_queues_msg
* @vf: pointer to the vf info
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* called from the vf to disable all or specific
* queue(s)
**/
static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
struct i40e_virtchnl_queue_select *vqs =
(struct i40e_virtchnl_queue_select *)msg;
struct i40e_pf *pf = vf->pf;
u16 vsi_id = vqs->vsi_id;
i40e_status aq_ret = 0;
if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
if (i40e_vsi_control_rings(pf->vsi[vsi_id], false))
aq_ret = I40E_ERR_TIMEOUT;
error_param:
/* send the response to the vf */
return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DISABLE_QUEUES,
aq_ret);
}
/**
* i40e_vc_get_stats_msg
* @vf: pointer to the vf info
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* called from the vf to get vsi stats
**/
static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
struct i40e_virtchnl_queue_select *vqs =
(struct i40e_virtchnl_queue_select *)msg;
struct i40e_pf *pf = vf->pf;
struct i40e_eth_stats stats;
i40e_status aq_ret = 0;
struct i40e_vsi *vsi;
memset(&stats, 0, sizeof(struct i40e_eth_stats));
if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
vsi = pf->vsi[vqs->vsi_id];
if (!vsi) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
i40e_update_eth_stats(vsi);
stats = vsi->eth_stats;
error_param:
/* send the response back to the vf */
return i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_GET_STATS, aq_ret,
(u8 *)&stats, sizeof(stats));
}
/**
* i40e_check_vf_permission
* @vf: pointer to the vf info
* @macaddr: pointer to the MAC Address being checked
*
* Check if the VF has permission to add or delete unicast MAC address
* filters and return error code -EPERM if not. Then check if the
* address filter requested is broadcast or zero and if so return
* an invalid MAC address error code.
**/
static inline int i40e_check_vf_permission(struct i40e_vf *vf, u8 *macaddr)
{
struct i40e_pf *pf = vf->pf;
int ret = 0;
if (is_broadcast_ether_addr(macaddr) ||
is_zero_ether_addr(macaddr)) {
dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n", macaddr);
ret = I40E_ERR_INVALID_MAC_ADDR;
} else if (vf->pf_set_mac && !is_multicast_ether_addr(macaddr)) {
/* If the host VMM administrator has set the VF MAC address
* administratively via the ndo_set_vf_mac command then deny
* permission to the VF to add or delete unicast MAC addresses.
*/
dev_err(&pf->pdev->dev,
"VF attempting to override administratively set MAC address\nPlease reload the VF driver to resume normal operation\n");
ret = -EPERM;
}
return ret;
}
/**
* i40e_vc_add_mac_addr_msg
* @vf: pointer to the vf info
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* add guest mac address filter
**/
static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
struct i40e_virtchnl_ether_addr_list *al =
(struct i40e_virtchnl_ether_addr_list *)msg;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = NULL;
u16 vsi_id = al->vsi_id;
i40e_status ret = 0;
int i;
if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
ret = I40E_ERR_PARAM;
goto error_param;
}
for (i = 0; i < al->num_elements; i++) {
ret = i40e_check_vf_permission(vf, al->list[i].addr);
if (ret)
goto error_param;
}
vsi = pf->vsi[vsi_id];
/* add new addresses to the list */
for (i = 0; i < al->num_elements; i++) {
struct i40e_mac_filter *f;
f = i40e_find_mac(vsi, al->list[i].addr, true, false);
if (!f) {
if (i40e_is_vsi_in_vlan(vsi))
f = i40e_put_mac_in_vlan(vsi, al->list[i].addr,
true, false);
else
f = i40e_add_filter(vsi, al->list[i].addr, -1,
true, false);
}
if (!f) {
dev_err(&pf->pdev->dev,
"Unable to add VF MAC filter\n");
ret = I40E_ERR_PARAM;
goto error_param;
}
}
/* program the updated filter list */
if (i40e_sync_vsi_filters(vsi))
dev_err(&pf->pdev->dev, "Unable to program VF MAC filters\n");
error_param:
/* send the response to the vf */
return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS,
ret);
}
/**
* i40e_vc_del_mac_addr_msg
* @vf: pointer to the vf info
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* remove guest mac address filter
**/
static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
struct i40e_virtchnl_ether_addr_list *al =
(struct i40e_virtchnl_ether_addr_list *)msg;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = NULL;
u16 vsi_id = al->vsi_id;
i40e_status ret = 0;
int i;
if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
ret = I40E_ERR_PARAM;
goto error_param;
}
for (i = 0; i < al->num_elements; i++) {
ret = i40e_check_vf_permission(vf, al->list[i].addr);
if (ret)
goto error_param;
}
vsi = pf->vsi[vsi_id];
/* delete addresses from the list */
for (i = 0; i < al->num_elements; i++)
i40e_del_filter(vsi, al->list[i].addr,
I40E_VLAN_ANY, true, false);
/* program the updated filter list */
if (i40e_sync_vsi_filters(vsi))
dev_err(&pf->pdev->dev, "Unable to program VF MAC filters\n");
error_param:
/* send the response to the vf */
return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS,
ret);
}
/**
* i40e_vc_add_vlan_msg
* @vf: pointer to the vf info
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* program guest vlan id
**/
static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
struct i40e_virtchnl_vlan_filter_list *vfl =
(struct i40e_virtchnl_vlan_filter_list *)msg;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = NULL;
u16 vsi_id = vfl->vsi_id;
i40e_status aq_ret = 0;
int i;
if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
for (i = 0; i < vfl->num_elements; i++) {
if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
aq_ret = I40E_ERR_PARAM;
dev_err(&pf->pdev->dev,
"invalid VF VLAN id %d\n", vfl->vlan_id[i]);
goto error_param;
}
}
vsi = pf->vsi[vsi_id];
if (vsi->info.pvid) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
i40e_vlan_stripping_enable(vsi);
for (i = 0; i < vfl->num_elements; i++) {
/* add new VLAN filter */
int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]);
if (ret)
dev_err(&pf->pdev->dev,
"Unable to add VF vlan filter %d, error %d\n",
vfl->vlan_id[i], ret);
}
error_param:
/* send the response to the vf */
return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ADD_VLAN, aq_ret);
}
/**
* i40e_vc_remove_vlan_msg
* @vf: pointer to the vf info
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* remove programmed guest vlan id
**/
static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
{
struct i40e_virtchnl_vlan_filter_list *vfl =
(struct i40e_virtchnl_vlan_filter_list *)msg;
struct i40e_pf *pf = vf->pf;
struct i40e_vsi *vsi = NULL;
u16 vsi_id = vfl->vsi_id;
i40e_status aq_ret = 0;
int i;
if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
for (i = 0; i < vfl->num_elements; i++) {
if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
}
vsi = pf->vsi[vsi_id];
if (vsi->info.pvid) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
for (i = 0; i < vfl->num_elements; i++) {
int ret = i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
if (ret)
dev_err(&pf->pdev->dev,
"Unable to delete VF vlan filter %d, error %d\n",
vfl->vlan_id[i], ret);
}
error_param:
/* send the response to the vf */
return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DEL_VLAN, aq_ret);
}
/**
* i40e_vc_validate_vf_msg
* @vf: pointer to the vf info
* @msg: pointer to the msg buffer
* @msglen: msg length
* @msghndl: msg handle
*
* validate msg
**/
static int i40e_vc_validate_vf_msg(struct i40e_vf *vf, u32 v_opcode,
u32 v_retval, u8 *msg, u16 msglen)
{
bool err_msg_format = false;
int valid_len;
/* Check if VF is disabled. */
if (test_bit(I40E_VF_STAT_DISABLED, &vf->vf_states))
return I40E_ERR_PARAM;
/* Validate message length. */
switch (v_opcode) {
case I40E_VIRTCHNL_OP_VERSION:
valid_len = sizeof(struct i40e_virtchnl_version_info);
break;
case I40E_VIRTCHNL_OP_RESET_VF:
case I40E_VIRTCHNL_OP_GET_VF_RESOURCES:
valid_len = 0;
break;
case I40E_VIRTCHNL_OP_CONFIG_TX_QUEUE:
valid_len = sizeof(struct i40e_virtchnl_txq_info);
break;
case I40E_VIRTCHNL_OP_CONFIG_RX_QUEUE:
valid_len = sizeof(struct i40e_virtchnl_rxq_info);
break;
case I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES:
valid_len = sizeof(struct i40e_virtchnl_vsi_queue_config_info);
if (msglen >= valid_len) {
struct i40e_virtchnl_vsi_queue_config_info *vqc =
(struct i40e_virtchnl_vsi_queue_config_info *)msg;
valid_len += (vqc->num_queue_pairs *
sizeof(struct
i40e_virtchnl_queue_pair_info));
if (vqc->num_queue_pairs == 0)
err_msg_format = true;
}
break;
case I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP:
valid_len = sizeof(struct i40e_virtchnl_irq_map_info);
if (msglen >= valid_len) {
struct i40e_virtchnl_irq_map_info *vimi =
(struct i40e_virtchnl_irq_map_info *)msg;
valid_len += (vimi->num_vectors *
sizeof(struct i40e_virtchnl_vector_map));
if (vimi->num_vectors == 0)
err_msg_format = true;
}
break;
case I40E_VIRTCHNL_OP_ENABLE_QUEUES:
case I40E_VIRTCHNL_OP_DISABLE_QUEUES:
valid_len = sizeof(struct i40e_virtchnl_queue_select);
break;
case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS:
case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS:
valid_len = sizeof(struct i40e_virtchnl_ether_addr_list);
if (msglen >= valid_len) {
struct i40e_virtchnl_ether_addr_list *veal =
(struct i40e_virtchnl_ether_addr_list *)msg;
valid_len += veal->num_elements *
sizeof(struct i40e_virtchnl_ether_addr);
if (veal->num_elements == 0)
err_msg_format = true;
}
break;
case I40E_VIRTCHNL_OP_ADD_VLAN:
case I40E_VIRTCHNL_OP_DEL_VLAN:
valid_len = sizeof(struct i40e_virtchnl_vlan_filter_list);
if (msglen >= valid_len) {
struct i40e_virtchnl_vlan_filter_list *vfl =
(struct i40e_virtchnl_vlan_filter_list *)msg;
valid_len += vfl->num_elements * sizeof(u16);
if (vfl->num_elements == 0)
err_msg_format = true;
}
break;
case I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
valid_len = sizeof(struct i40e_virtchnl_promisc_info);
break;
case I40E_VIRTCHNL_OP_GET_STATS:
valid_len = sizeof(struct i40e_virtchnl_queue_select);
break;
/* These are always errors coming from the VF. */
case I40E_VIRTCHNL_OP_EVENT:
case I40E_VIRTCHNL_OP_UNKNOWN:
default:
return -EPERM;
break;
}
/* few more checks */
if ((valid_len != msglen) || (err_msg_format)) {
i40e_vc_send_resp_to_vf(vf, v_opcode, I40E_ERR_PARAM);
return -EINVAL;
} else {
return 0;
}
}
/**
* i40e_vc_process_vf_msg
* @pf: pointer to the pf structure
* @vf_id: source vf id
* @msg: pointer to the msg buffer
* @msglen: msg length
* @msghndl: msg handle
*
* called from the common aeq/arq handler to
* process request from vf
**/
int i40e_vc_process_vf_msg(struct i40e_pf *pf, u16 vf_id, u32 v_opcode,
u32 v_retval, u8 *msg, u16 msglen)
{
struct i40e_hw *hw = &pf->hw;
int local_vf_id = vf_id - hw->func_caps.vf_base_id;
struct i40e_vf *vf;
int ret;
pf->vf_aq_requests++;
if (local_vf_id >= pf->num_alloc_vfs)
return -EINVAL;
vf = &(pf->vf[local_vf_id]);
/* perform basic checks on the msg */
ret = i40e_vc_validate_vf_msg(vf, v_opcode, v_retval, msg, msglen);
if (ret) {
dev_err(&pf->pdev->dev, "Invalid message from vf %d, opcode %d, len %d\n",
local_vf_id, v_opcode, msglen);
return ret;
}
wr32(hw, I40E_VFGEN_RSTAT1(local_vf_id), I40E_VFR_VFACTIVE);
switch (v_opcode) {
case I40E_VIRTCHNL_OP_VERSION:
ret = i40e_vc_get_version_msg(vf);
break;
case I40E_VIRTCHNL_OP_GET_VF_RESOURCES:
ret = i40e_vc_get_vf_resources_msg(vf);
break;
case I40E_VIRTCHNL_OP_RESET_VF:
i40e_vc_reset_vf_msg(vf);
ret = 0;
break;
case I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
ret = i40e_vc_config_promiscuous_mode_msg(vf, msg, msglen);
break;
case I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES:
ret = i40e_vc_config_queues_msg(vf, msg, msglen);
break;
case I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP:
ret = i40e_vc_config_irq_map_msg(vf, msg, msglen);
break;
case I40E_VIRTCHNL_OP_ENABLE_QUEUES:
ret = i40e_vc_enable_queues_msg(vf, msg, msglen);
break;
case I40E_VIRTCHNL_OP_DISABLE_QUEUES:
ret = i40e_vc_disable_queues_msg(vf, msg, msglen);
break;
case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS:
ret = i40e_vc_add_mac_addr_msg(vf, msg, msglen);
break;
case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS:
ret = i40e_vc_del_mac_addr_msg(vf, msg, msglen);
break;
case I40E_VIRTCHNL_OP_ADD_VLAN:
ret = i40e_vc_add_vlan_msg(vf, msg, msglen);
break;
case I40E_VIRTCHNL_OP_DEL_VLAN:
ret = i40e_vc_remove_vlan_msg(vf, msg, msglen);
break;
case I40E_VIRTCHNL_OP_GET_STATS:
ret = i40e_vc_get_stats_msg(vf, msg, msglen);
break;
case I40E_VIRTCHNL_OP_UNKNOWN:
default:
dev_err(&pf->pdev->dev, "Unsupported opcode %d from vf %d\n",
v_opcode, local_vf_id);
ret = i40e_vc_send_resp_to_vf(vf, v_opcode,
I40E_ERR_NOT_IMPLEMENTED);
break;
}
return ret;
}
/**
* i40e_vc_process_vflr_event
* @pf: pointer to the pf structure
*
* called from the vlfr irq handler to
* free up vf resources and state variables
**/
int i40e_vc_process_vflr_event(struct i40e_pf *pf)
{
u32 reg, reg_idx, bit_idx, vf_id;
struct i40e_hw *hw = &pf->hw;
struct i40e_vf *vf;
if (!test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
return 0;
clear_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
/* read GLGEN_VFLRSTAT register to find out the flr vfs */
vf = &pf->vf[vf_id];
reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
if (reg & (1 << bit_idx)) {
/* clear the bit in GLGEN_VFLRSTAT */
wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), (1 << bit_idx));
i40e_reset_vf(vf, true);
}
}
/* re-enable vflr interrupt cause */
reg = rd32(hw, I40E_PFINT_ICR0_ENA);
reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK;
wr32(hw, I40E_PFINT_ICR0_ENA, reg);
i40e_flush(hw);
return 0;
}
/**
* i40e_vc_vf_broadcast
* @pf: pointer to the pf structure
* @opcode: operation code
* @retval: return value
* @msg: pointer to the msg buffer
* @msglen: msg length
*
* send a message to all VFs on a given PF
**/
static void i40e_vc_vf_broadcast(struct i40e_pf *pf,
enum i40e_virtchnl_ops v_opcode,
i40e_status v_retval, u8 *msg,
u16 msglen)
{
struct i40e_hw *hw = &pf->hw;
struct i40e_vf *vf = pf->vf;
int i;
for (i = 0; i < pf->num_alloc_vfs; i++) {
/* Ignore return value on purpose - a given VF may fail, but
* we need to keep going and send to all of them
*/
i40e_aq_send_msg_to_vf(hw, vf->vf_id, v_opcode, v_retval,
msg, msglen, NULL);
vf++;
}
}
/**
* i40e_vc_notify_link_state
* @pf: pointer to the pf structure
*
* send a link status message to all VFs on a given PF
**/
void i40e_vc_notify_link_state(struct i40e_pf *pf)
{
struct i40e_virtchnl_pf_event pfe;
pfe.event = I40E_VIRTCHNL_EVENT_LINK_CHANGE;
pfe.severity = I40E_PF_EVENT_SEVERITY_INFO;
pfe.event_data.link_event.link_status =
pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP;
pfe.event_data.link_event.link_speed = pf->hw.phy.link_info.link_speed;
i40e_vc_vf_broadcast(pf, I40E_VIRTCHNL_OP_EVENT, I40E_SUCCESS,
(u8 *)&pfe, sizeof(struct i40e_virtchnl_pf_event));
}
/**
* i40e_vc_notify_reset
* @pf: pointer to the pf structure
*
* indicate a pending reset to all VFs on a given PF
**/
void i40e_vc_notify_reset(struct i40e_pf *pf)
{
struct i40e_virtchnl_pf_event pfe;
pfe.event = I40E_VIRTCHNL_EVENT_RESET_IMPENDING;
pfe.severity = I40E_PF_EVENT_SEVERITY_CERTAIN_DOOM;
i40e_vc_vf_broadcast(pf, I40E_VIRTCHNL_OP_EVENT, I40E_SUCCESS,
(u8 *)&pfe, sizeof(struct i40e_virtchnl_pf_event));
}
/**
* i40e_vc_notify_vf_reset
* @vf: pointer to the vf structure
*
* indicate a pending reset to the given VF
**/
void i40e_vc_notify_vf_reset(struct i40e_vf *vf)
{
struct i40e_virtchnl_pf_event pfe;
pfe.event = I40E_VIRTCHNL_EVENT_RESET_IMPENDING;
pfe.severity = I40E_PF_EVENT_SEVERITY_CERTAIN_DOOM;
i40e_aq_send_msg_to_vf(&vf->pf->hw, vf->vf_id, I40E_VIRTCHNL_OP_EVENT,
I40E_SUCCESS, (u8 *)&pfe,
sizeof(struct i40e_virtchnl_pf_event), NULL);
}
/**
* i40e_ndo_set_vf_mac
* @netdev: network interface device structure
* @vf_id: vf identifier
* @mac: mac address
*
* program vf mac address
**/
int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
struct i40e_mac_filter *f;
struct i40e_vf *vf;
int ret = 0;
/* validate the request */
if (vf_id >= pf->num_alloc_vfs) {
dev_err(&pf->pdev->dev,
"Invalid VF Identifier %d\n", vf_id);
ret = -EINVAL;
goto error_param;
}
vf = &(pf->vf[vf_id]);
vsi = pf->vsi[vf->lan_vsi_index];
if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
dev_err(&pf->pdev->dev,
"Uninitialized VF %d\n", vf_id);
ret = -EINVAL;
goto error_param;
}
if (!is_valid_ether_addr(mac)) {
dev_err(&pf->pdev->dev,
"Invalid VF ethernet address\n");
ret = -EINVAL;
goto error_param;
}
/* delete the temporary mac address */
i40e_del_filter(vsi, vf->default_lan_addr.addr, 0, true, false);
/* add the new mac address */
f = i40e_add_filter(vsi, mac, 0, true, false);
if (!f) {
dev_err(&pf->pdev->dev,
"Unable to add VF ucast filter\n");
ret = -ENOMEM;
goto error_param;
}
dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n", mac, vf_id);
/* program mac filter */
if (i40e_sync_vsi_filters(vsi)) {
dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
ret = -EIO;
goto error_param;
}
memcpy(vf->default_lan_addr.addr, mac, ETH_ALEN);
vf->pf_set_mac = true;
dev_info(&pf->pdev->dev, "Reload the VF driver to make this change effective.\n");
ret = 0;
error_param:
return ret;
}
/**
* i40e_ndo_set_vf_port_vlan
* @netdev: network interface device structure
* @vf_id: vf identifier
* @vlan_id: mac address
* @qos: priority setting
*
* program vf vlan id and/or qos
**/
int i40e_ndo_set_vf_port_vlan(struct net_device *netdev,
int vf_id, u16 vlan_id, u8 qos)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_pf *pf = np->vsi->back;
struct i40e_vsi *vsi;
struct i40e_vf *vf;
int ret = 0;
/* validate the request */
if (vf_id >= pf->num_alloc_vfs) {
dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
ret = -EINVAL;
goto error_pvid;
}
if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
ret = -EINVAL;
goto error_pvid;
}
vf = &(pf->vf[vf_id]);
vsi = pf->vsi[vf->lan_vsi_index];
if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
dev_err(&pf->pdev->dev, "Uninitialized VF %d\n", vf_id);
ret = -EINVAL;
goto error_pvid;
}
if (vsi->info.pvid) {
/* kill old VLAN */
ret = i40e_vsi_kill_vlan(vsi, (le16_to_cpu(vsi->info.pvid) &
VLAN_VID_MASK));
if (ret) {
dev_info(&vsi->back->pdev->dev,
"remove VLAN failed, ret=%d, aq_err=%d\n",
ret, pf->hw.aq.asq_last_status);
}
}
if (vlan_id || qos)
ret = i40e_vsi_add_pvid(vsi,
vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT));
else
i40e_vsi_remove_pvid(vsi);
if (vlan_id) {
dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
vlan_id, qos, vf_id);
/* add new VLAN filter */
ret = i40e_vsi_add_vlan(vsi, vlan_id);
if (ret) {
dev_info(&vsi->back->pdev->dev,
"add VF VLAN failed, ret=%d aq_err=%d\n", ret,
vsi->back->hw.aq.asq_last_status);
goto error_pvid;
}
}
if (ret) {
dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n");
goto error_pvid;
}
/* The Port VLAN needs to be saved across resets the same as the
* default LAN MAC address.
*/
vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
ret = 0;
error_pvid:
return ret;
}
/**
* i40e_ndo_set_vf_bw
* @netdev: network interface device structure
* @vf_id: vf identifier
* @tx_rate: tx rate
*
* configure vf tx rate
**/
int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int tx_rate)
{
return -EOPNOTSUPP;
}
/**
* i40e_ndo_get_vf_config
* @netdev: network interface device structure
* @vf_id: vf identifier
* @ivi: vf configuration structure
*
* return vf configuration
**/
int i40e_ndo_get_vf_config(struct net_device *netdev,
int vf_id, struct ifla_vf_info *ivi)
{
struct i40e_netdev_priv *np = netdev_priv(netdev);
struct i40e_vsi *vsi = np->vsi;
struct i40e_pf *pf = vsi->back;
struct i40e_vf *vf;
int ret = 0;
/* validate the request */
if (vf_id >= pf->num_alloc_vfs) {
dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
ret = -EINVAL;
goto error_param;
}
vf = &(pf->vf[vf_id]);
/* first vsi is always the LAN vsi */
vsi = pf->vsi[vf->lan_vsi_index];
if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
dev_err(&pf->pdev->dev, "Uninitialized VF %d\n", vf_id);
ret = -EINVAL;
goto error_param;
}
ivi->vf = vf_id;
memcpy(&ivi->mac, vf->default_lan_addr.addr, ETH_ALEN);
ivi->tx_rate = 0;
ivi->vlan = le16_to_cpu(vsi->info.pvid) & I40E_VLAN_MASK;
ivi->qos = (le16_to_cpu(vsi->info.pvid) & I40E_PRIORITY_MASK) >>
I40E_VLAN_PRIORITY_SHIFT;
ret = 0;
error_param:
return ret;
}
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