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cxgb4: Add API to correctly calculate tuple fields

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Adds API cxgb4_select_ntuple so as to enable Upper Level Drivers to correctly
calculate the tuple fields.

Adds constant definitions for TP_VLAN_PRI_MAP for the Compressed
Filter Tuple field widths and structures and uses them.

Also, the CPL Parameters field for T5 is 40 bits so we need to prototype
cxgb4_select_ntuple() to calculate and return u64 values.

Based on original work by Casey Leedom <leedom@chelsio.com>

Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kumar Sanghvi 2013-12-18 16:38:23 +05:30 committed by David S. Miller
parent 15f63b74c2
commit dcf7b6f5bd
6 changed files with 235 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
View File

@ -228,6 +228,25 @@ struct tp_params {
uint32_t dack_re; /* DACK timer resolution */
unsigned short tx_modq[NCHAN]; /* channel to modulation queue map */
u32 vlan_pri_map; /* cached TP_VLAN_PRI_MAP */
u32 ingress_config; /* cached TP_INGRESS_CONFIG */
/* TP_VLAN_PRI_MAP Compressed Filter Tuple field offsets. This is a
* subset of the set of fields which may be present in the Compressed
* Filter Tuple portion of filters and TCP TCB connections. The
* fields which are present are controlled by the TP_VLAN_PRI_MAP.
* Since a variable number of fields may or may not be present, their
* shifted field positions within the Compressed Filter Tuple may
* vary, or not even be present if the field isn't selected in
* TP_VLAN_PRI_MAP. Since some of these fields are needed in various
* places we store their offsets here, or a -1 if the field isn't
* present.
*/
int vlan_shift;
int vnic_shift;
int port_shift;
int protocol_shift;
};
struct vpd_params {
@ -926,6 +945,8 @@ int t4_prep_fw(struct adapter *adap, struct fw_info *fw_info,
const u8 *fw_data, unsigned int fw_size,
struct fw_hdr *card_fw, enum dev_state state, int *reset);
int t4_prep_adapter(struct adapter *adapter);
int t4_init_tp_params(struct adapter *adap);
int t4_filter_field_shift(const struct adapter *adap, int filter_sel);
int t4_port_init(struct adapter *adap, int mbox, int pf, int vf);
void t4_fatal_err(struct adapter *adapter);
int t4_config_rss_range(struct adapter *adapter, int mbox, unsigned int viid,

20
drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
View File

@ -3755,7 +3755,7 @@ static void uld_attach(struct adapter *adap, unsigned int uld)
lli.ucq_density = 1 << QUEUESPERPAGEPF0_GET(
t4_read_reg(adap, SGE_INGRESS_QUEUES_PER_PAGE_PF) >>
(adap->fn * 4));
lli.filt_mode = adap->filter_mode;
lli.filt_mode = adap->params.tp.vlan_pri_map;
/* MODQ_REQ_MAP sets queues 0-3 to chan 0-3 */
for (i = 0; i < NCHAN; i++)
lli.tx_modq[i] = i;
@ -4229,13 +4229,13 @@ int cxgb4_create_server_filter(const struct net_device *dev, unsigned int stid,
f->fs.val.lip[i] = val[i];
f->fs.mask.lip[i] = ~0;
}
if (adap->filter_mode & F_PORT) {
if (adap->params.tp.vlan_pri_map & F_PORT) {
f->fs.val.iport = port;
f->fs.mask.iport = mask;
}
}
if (adap->filter_mode & F_PROTOCOL) {
if (adap->params.tp.vlan_pri_map & F_PROTOCOL) {
f->fs.val.proto = IPPROTO_TCP;
f->fs.mask.proto = ~0;
}
@ -5121,7 +5121,7 @@ static int adap_init0(struct adapter *adap)
enum dev_state state;
u32 params[7], val[7];
struct fw_caps_config_cmd caps_cmd;
int reset = 1, j;
int reset = 1;
/*
* Contact FW, advertising Master capability (and potentially forcing
@ -5463,21 +5463,11 @@ static int adap_init0(struct adapter *adap)
/*
* These are finalized by FW initialization, load their values now.
*/
v = t4_read_reg(adap, TP_TIMER_RESOLUTION);
adap->params.tp.tre = TIMERRESOLUTION_GET(v);
adap->params.tp.dack_re = DELAYEDACKRESOLUTION_GET(v);
t4_read_mtu_tbl(adap, adap->params.mtus, NULL);
t4_load_mtus(adap, adap->params.mtus, adap->params.a_wnd,
adap->params.b_wnd);
/* MODQ_REQ_MAP defaults to setting queues 0-3 to chan 0-3 */
for (j = 0; j < NCHAN; j++)
adap->params.tp.tx_modq[j] = j;
t4_read_indirect(adap, TP_PIO_ADDR, TP_PIO_DATA,
&adap->filter_mode, 1,
TP_VLAN_PRI_MAP);
t4_init_tp_params(adap);
adap->flags |= FW_OK;
return 0;

35
drivers/net/ethernet/chelsio/cxgb4/l2t.c
View File

@ -45,6 +45,7 @@
#include "l2t.h"
#include "t4_msg.h"
#include "t4fw_api.h"
#include "t4_regs.h"
#define VLAN_NONE 0xfff
@ -411,6 +412,40 @@ done:
}
EXPORT_SYMBOL(cxgb4_l2t_get);
u64 cxgb4_select_ntuple(struct net_device *dev,
const struct l2t_entry *l2t)
{
struct adapter *adap = netdev2adap(dev);
struct tp_params *tp = &adap->params.tp;
u64 ntuple = 0;
/* Initialize each of the fields which we care about which are present
* in the Compressed Filter Tuple.
*/
if (tp->vlan_shift >= 0 && l2t->vlan != VLAN_NONE)
ntuple |= (F_FT_VLAN_VLD | l2t->vlan) << tp->vlan_shift;
if (tp->port_shift >= 0)
ntuple |= (u64)l2t->lport << tp->port_shift;
if (tp->protocol_shift >= 0)
ntuple |= (u64)IPPROTO_TCP << tp->protocol_shift;
if (tp->vnic_shift >= 0) {
u32 viid = cxgb4_port_viid(dev);
u32 vf = FW_VIID_VIN_GET(viid);
u32 pf = FW_VIID_PFN_GET(viid);
u32 vld = FW_VIID_VIVLD_GET(viid);
ntuple |= (u64)(V_FT_VNID_ID_VF(vf) |
V_FT_VNID_ID_PF(pf) |
V_FT_VNID_ID_VLD(vld)) << tp->vnic_shift;
}
return ntuple;
}
EXPORT_SYMBOL(cxgb4_select_ntuple);
/*
* Called when address resolution fails for an L2T entry to handle packets
* on the arpq head. If a packet specifies a failure handler it is invoked,

3
drivers/net/ethernet/chelsio/cxgb4/l2t.h
View File

@ -98,7 +98,8 @@ int cxgb4_l2t_send(struct net_device *dev, struct sk_buff *skb,
struct l2t_entry *cxgb4_l2t_get(struct l2t_data *d, struct neighbour *neigh,
const struct net_device *physdev,
unsigned int priority);
u64 cxgb4_select_ntuple(struct net_device *dev,
const struct l2t_entry *l2t);
void t4_l2t_update(struct adapter *adap, struct neighbour *neigh);
struct l2t_entry *t4_l2t_alloc_switching(struct l2t_data *d);
int t4_l2t_set_switching(struct adapter *adap, struct l2t_entry *e, u16 vlan,

103
drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
View File

@ -3808,6 +3808,109 @@ int t4_prep_adapter(struct adapter *adapter)
return 0;
}
/**
* t4_init_tp_params - initialize adap->params.tp
* @adap: the adapter
*
* Initialize various fields of the adapter's TP Parameters structure.
*/
int t4_init_tp_params(struct adapter *adap)
{
int chan;
u32 v;
v = t4_read_reg(adap, TP_TIMER_RESOLUTION);
adap->params.tp.tre = TIMERRESOLUTION_GET(v);
adap->params.tp.dack_re = DELAYEDACKRESOLUTION_GET(v);
/* MODQ_REQ_MAP defaults to setting queues 0-3 to chan 0-3 */
for (chan = 0; chan < NCHAN; chan++)
adap->params.tp.tx_modq[chan] = chan;
/* Cache the adapter's Compressed Filter Mode and global Incress
* Configuration.
*/
t4_read_indirect(adap, TP_PIO_ADDR, TP_PIO_DATA,
&adap->params.tp.vlan_pri_map, 1,
TP_VLAN_PRI_MAP);
t4_read_indirect(adap, TP_PIO_ADDR, TP_PIO_DATA,
&adap->params.tp.ingress_config, 1,
TP_INGRESS_CONFIG);
/* Now that we have TP_VLAN_PRI_MAP cached, we can calculate the field
* shift positions of several elements of the Compressed Filter Tuple
* for this adapter which we need frequently ...
*/
adap->params.tp.vlan_shift = t4_filter_field_shift(adap, F_VLAN);
adap->params.tp.vnic_shift = t4_filter_field_shift(adap, F_VNIC_ID);
adap->params.tp.port_shift = t4_filter_field_shift(adap, F_PORT);
adap->params.tp.protocol_shift = t4_filter_field_shift(adap,
F_PROTOCOL);
/* If TP_INGRESS_CONFIG.VNID == 0, then TP_VLAN_PRI_MAP.VNIC_ID
* represents the presense of an Outer VLAN instead of a VNIC ID.
*/
if ((adap->params.tp.ingress_config & F_VNIC) == 0)
adap->params.tp.vnic_shift = -1;
return 0;
}
/**
* t4_filter_field_shift - calculate filter field shift
* @adap: the adapter
* @filter_sel: the desired field (from TP_VLAN_PRI_MAP bits)
*
* Return the shift position of a filter field within the Compressed
* Filter Tuple. The filter field is specified via its selection bit
* within TP_VLAN_PRI_MAL (filter mode). E.g. F_VLAN.
*/
int t4_filter_field_shift(const struct adapter *adap, int filter_sel)
{
unsigned int filter_mode = adap->params.tp.vlan_pri_map;
unsigned int sel;
int field_shift;
if ((filter_mode & filter_sel) == 0)
return -1;
for (sel = 1, field_shift = 0; sel < filter_sel; sel <<= 1) {
switch (filter_mode & sel) {
case F_FCOE:
field_shift += W_FT_FCOE;
break;
case F_PORT:
field_shift += W_FT_PORT;
break;
case F_VNIC_ID:
field_shift += W_FT_VNIC_ID;
break;
case F_VLAN:
field_shift += W_FT_VLAN;
break;
case F_TOS:
field_shift += W_FT_TOS;
break;
case F_PROTOCOL:
field_shift += W_FT_PROTOCOL;
break;
case F_ETHERTYPE:
field_shift += W_FT_ETHERTYPE;
break;
case F_MACMATCH:
field_shift += W_FT_MACMATCH;
break;
case F_MPSHITTYPE:
field_shift += W_FT_MPSHITTYPE;
break;
case F_FRAGMENTATION:
field_shift += W_FT_FRAGMENTATION;
break;
}
}
return field_shift;
}
int t4_port_init(struct adapter *adap, int mbox, int pf, int vf)
{
u8 addr[6];

69
drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
View File

@ -1171,14 +1171,50 @@
#define A_TP_TX_SCHED_PCMD 0x25
#define S_VNIC 11
#define V_VNIC(x) ((x) << S_VNIC)
#define F_VNIC V_VNIC(1U)
#define S_FRAGMENTATION 9
#define V_FRAGMENTATION(x) ((x) << S_FRAGMENTATION)
#define F_FRAGMENTATION V_FRAGMENTATION(1U)
#define S_MPSHITTYPE 8
#define V_MPSHITTYPE(x) ((x) << S_MPSHITTYPE)
#define F_MPSHITTYPE V_MPSHITTYPE(1U)
#define S_MACMATCH 7
#define V_MACMATCH(x) ((x) << S_MACMATCH)
#define F_MACMATCH V_MACMATCH(1U)
#define S_ETHERTYPE 6
#define V_ETHERTYPE(x) ((x) << S_ETHERTYPE)
#define F_ETHERTYPE V_ETHERTYPE(1U)
#define S_PROTOCOL 5
#define V_PROTOCOL(x) ((x) << S_PROTOCOL)
#define F_PROTOCOL V_PROTOCOL(1U)
#define S_TOS 4
#define V_TOS(x) ((x) << S_TOS)
#define F_TOS V_TOS(1U)
#define S_VLAN 3
#define V_VLAN(x) ((x) << S_VLAN)
#define F_VLAN V_VLAN(1U)
#define S_VNIC_ID 2
#define V_VNIC_ID(x) ((x) << S_VNIC_ID)
#define F_VNIC_ID V_VNIC_ID(1U)
#define S_PORT 1
#define V_PORT(x) ((x) << S_PORT)
#define F_PORT V_PORT(1U)
#define S_FCOE 0
#define V_FCOE(x) ((x) << S_FCOE)
#define F_FCOE V_FCOE(1U)
#define NUM_MPS_CLS_SRAM_L_INSTANCES 336
#define NUM_MPS_T5_CLS_SRAM_L_INSTANCES 512
@ -1217,4 +1253,37 @@
#define V_CHIPID(x) ((x) << S_CHIPID)
#define G_CHIPID(x) (((x) >> S_CHIPID) & M_CHIPID)
/* TP_VLAN_PRI_MAP controls which subset of fields will be present in the
* Compressed Filter Tuple for LE filters. Each bit set in TP_VLAN_PRI_MAP
* selects for a particular field being present. These fields, when present
* in the Compressed Filter Tuple, have the following widths in bits.
*/
#define W_FT_FCOE 1
#define W_FT_PORT 3
#define W_FT_VNIC_ID 17
#define W_FT_VLAN 17
#define W_FT_TOS 8
#define W_FT_PROTOCOL 8
#define W_FT_ETHERTYPE 16
#define W_FT_MACMATCH 9
#define W_FT_MPSHITTYPE 3
#define W_FT_FRAGMENTATION 1
/* Some of the Compressed Filter Tuple fields have internal structure. These
* bit shifts/masks describe those structures. All shifts are relative to the
* base position of the fields within the Compressed Filter Tuple
*/
#define S_FT_VLAN_VLD 16
#define V_FT_VLAN_VLD(x) ((x) << S_FT_VLAN_VLD)
#define F_FT_VLAN_VLD V_FT_VLAN_VLD(1U)
#define S_FT_VNID_ID_VF 0
#define V_FT_VNID_ID_VF(x) ((x) << S_FT_VNID_ID_VF)
#define S_FT_VNID_ID_PF 7
#define V_FT_VNID_ID_PF(x) ((x) << S_FT_VNID_ID_PF)
#define S_FT_VNID_ID_VLD 16
#define V_FT_VNID_ID_VLD(x) ((x) << S_FT_VNID_ID_VLD)
#endif /* __T4_REGS_H */