/* Broadcom NetXtreme-C/E network driver.
*
* Copyright (c) 2014-2016 Broadcom Corporation
* Copyright (c) 2016-2017 Broadcom Limited
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation.
*/
#include <linux/netdevice.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/rtnetlink.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/etherdevice.h>
#include <rdma/ib_verbs.h>
#include "bnxt_hsi.h"
#include "bnxt.h"
#include "bnxt_hwrm.h"
#include "bnxt_dcb.h"
#ifdef CONFIG_BNXT_DCB
static int bnxt_queue_to_tc(struct bnxt *bp, u8 queue_id)
{
int i, j;
for (i = 0; i < bp->max_tc; i++) {
if (bp->q_info[i].queue_id == queue_id) {
for (j = 0; j < bp->max_tc; j++) {
if (bp->tc_to_qidx[j] == i)
return j;
}
}
}
return -EINVAL;
}
static int bnxt_hwrm_queue_pri2cos_cfg(struct bnxt *bp, struct ieee_ets *ets)
{
struct hwrm_queue_pri2cos_cfg_input *req;
u8 *pri2cos;
int rc, i;
rc = hwrm_req_init(bp, req, HWRM_QUEUE_PRI2COS_CFG);
if (rc)
return rc;
req->flags = cpu_to_le32(QUEUE_PRI2COS_CFG_REQ_FLAGS_PATH_BIDIR |
QUEUE_PRI2COS_CFG_REQ_FLAGS_IVLAN);
pri2cos = &req->pri0_cos_queue_id;
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
u8 qidx;
req->enables |= cpu_to_le32(
QUEUE_PRI2COS_CFG_REQ_ENABLES_PRI0_COS_QUEUE_ID << i);
qidx = bp->tc_to_qidx[ets->prio_tc[i]];
pri2cos[i] = bp->q_info[qidx].queue_id;
}
return hwrm_req_send(bp, req);
}
static int bnxt_hwrm_queue_pri2cos_qcfg(struct bnxt *bp, struct ieee_ets *ets)
{
struct hwrm_queue_pri2cos_qcfg_output *resp;
struct hwrm_queue_pri2cos_qcfg_input *req;
int rc;
rc = hwrm_req_init(bp, req, HWRM_QUEUE_PRI2COS_QCFG);
if (rc)
return rc;
req->flags = cpu_to_le32(QUEUE_PRI2COS_QCFG_REQ_FLAGS_IVLAN);
resp = hwrm_req_hold(bp, req);
rc = hwrm_req_send(bp, req);
if (!rc) {
u8 *pri2cos = &resp->pri0_cos_queue_id;
int i;
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
u8 queue_id = pri2cos[i];
int tc;
tc = bnxt_queue_to_tc(bp, queue_id);
if (tc >= 0)
ets->prio_tc[i] = tc;
}
}
hwrm_req_drop(bp, req);
return rc;
}
static int bnxt_hwrm_queue_cos2bw_cfg(struct bnxt *bp, struct ieee_ets *ets,
u8 max_tc)
{
struct hwrm_queue_cos2bw_cfg_input *req;
struct bnxt_cos2bw_cfg cos2bw;
int rc, i;
rc = hwrm_req_init(bp, req, HWRM_QUEUE_COS2BW_CFG);
if (rc)
return rc;
for (i = 0; i < max_tc; i++) {
u8 qidx = bp->tc_to_qidx[i];
req->enables |= cpu_to_le32(
QUEUE_COS2BW_CFG_REQ_ENABLES_COS_QUEUE_ID0_VALID <<
qidx);
memset(&cos2bw, 0, sizeof(cos2bw));
cos2bw.queue_id = bp->q_info[qidx].queue_id;
if (ets->tc_tsa[i] == IEEE_8021QAZ_TSA_STRICT) {
cos2bw.tsa =
QUEUE_COS2BW_QCFG_RESP_QUEUE_ID0_TSA_ASSIGN_SP;
cos2bw.pri_lvl = i;
} else {
cos2bw.tsa =
QUEUE_COS2BW_QCFG_RESP_QUEUE_ID0_TSA_ASSIGN_ETS;
cos2bw.bw_weight = ets->tc_tx_bw[i];
/* older firmware requires min_bw to be set to the
* same weight value in percent.
*/
cos2bw.min_bw =
cpu_to_le32((ets->tc_tx_bw[i] * 100) |
BW_VALUE_UNIT_PERCENT1_100);
}
if (qidx == 0) {
req->queue_id0 = cos2bw.queue_id;
req->queue_id0_min_bw = cos2bw.min_bw;
req->queue_id0_max_bw = cos2bw.max_bw;
req->queue_id0_tsa_assign = cos2bw.tsa;
req->queue_id0_pri_lvl = cos2bw.pri_lvl;
req->queue_id0_bw_weight = cos2bw.bw_weight;
} else {
memcpy(&req->cfg[i - 1], &cos2bw.cfg, sizeof(cos2bw.cfg));
}
}
return hwrm_req_send(bp, req);
}
static int bnxt_hwrm_queue_cos2bw_qcfg(struct bnxt *bp, struct ieee_ets *ets)
{
struct hwrm_queue_cos2bw_qcfg_output *resp;
struct hwrm_queue_cos2bw_qcfg_input *req;
struct bnxt_cos2bw_cfg cos2bw;
int rc, i;
rc = hwrm_req_init(bp, req, HWRM_QUEUE_COS2BW_QCFG);
if (rc)
return rc;
resp = hwrm_req_hold(bp, req);
rc = hwrm_req_send(bp, req);
if (rc) {
hwrm_req_drop(bp, req);
return rc;
}
for (i = 0; i < bp->max_tc; i++) {
int tc;
if (i == 0) {
cos2bw.queue_id = resp->queue_id0;
cos2bw.min_bw = resp->queue_id0_min_bw;
cos2bw.max_bw = resp->queue_id0_max_bw;
cos2bw.tsa = resp->queue_id0_tsa_assign;
cos2bw.pri_lvl = resp->queue_id0_pri_lvl;
cos2bw.bw_weight = resp->queue_id0_bw_weight;
} else {
memcpy(&cos2bw.cfg, &resp->cfg[i - 1], sizeof(cos2bw.cfg));
}
tc = bnxt_queue_to_tc(bp, cos2bw.queue_id);
if (tc < 0)
continue;
if (cos2bw.tsa ==
QUEUE_COS2BW_QCFG_RESP_QUEUE_ID0_TSA_ASSIGN_SP) {
ets->tc_tsa[tc] = IEEE_8021QAZ_TSA_STRICT;
} else {
ets->tc_tsa[tc] = IEEE_8021QAZ_TSA_ETS;
ets->tc_tx_bw[tc] = cos2bw.bw_weight;
}
}
hwrm_req_drop(bp, req);
return 0;
}
static int bnxt_queue_remap(struct bnxt *bp, unsigned int lltc_mask)
{
unsigned long qmap = 0;
int max = bp->max_tc;
int i, j, rc;
/* Assign lossless TCs first */
for (i = 0, j = 0; i < max; ) {
if (lltc_mask & (1 << i)) {
if (BNXT_LLQ(bp->q_info[j].queue_profile)) {
bp->tc_to_qidx[i] = j;
__set_bit(j, &qmap);
i++;
}
j++;
continue;
}
i++;
}
for (i = 0, j = 0; i < max; i++) {
if (lltc_mask & (1 << i))
continue;
j = find_next_zero_bit(&qmap, max, j);
bp->tc_to_qidx[i] = j;
__set_bit(j, &qmap);
j++;
}
if (netif_running(bp->dev)) {
bnxt_close_nic(bp, false, false);
rc = bnxt_open_nic(bp, false, false);
if (rc) {
netdev_warn(bp->dev, "failed to open NIC, rc = %d\n", rc);
return rc;
}
}
if (bp->ieee_ets) {
int tc = bp->num_tc;
if (!tc)
tc = 1;
rc = bnxt_hwrm_queue_cos2bw_cfg(bp, bp->ieee_ets, tc);
if (rc) {
netdev_warn(bp->dev, "failed to config BW, rc = %d\n", rc);
return rc;
}
rc = bnxt_hwrm_queue_pri2cos_cfg(bp, bp->ieee_ets);
if (rc) {
netdev_warn(bp->dev, "failed to config prio, rc = %d\n", rc);
return rc;
}
}
return 0;
}
static int bnxt_hwrm_queue_pfc_cfg(struct bnxt *bp, struct ieee_pfc *pfc)
{
struct hwrm_queue_pfcenable_cfg_input *req;
struct ieee_ets *my_ets = bp->ieee_ets;
unsigned int tc_mask = 0, pri_mask = 0;
u8 i, pri, lltc_count = 0;
bool need_q_remap = false;
int rc;
if (!my_ets)
return -EINVAL;
for (i = 0; i < bp->max_tc; i++) {
for (pri = 0; pri < IEEE_8021QAZ_MAX_TCS; pri++) {
if ((pfc->pfc_en & (1 << pri)) &&
(my_ets->prio_tc[pri] == i)) {
pri_mask |= 1 << pri;
tc_mask |= 1 << i;
}
}
if (tc_mask & (1 << i))
lltc_count++;
}
if (lltc_count > bp->max_lltc)
return -EINVAL;
for (i = 0; i < bp->max_tc; i++) {
if (tc_mask & (1 << i)) {
u8 qidx = bp->tc_to_qidx[i];
if (!BNXT_LLQ(bp->q_info[qidx].queue_profile)) {
need_q_remap = true;
break;
}
}
}
if (need_q_remap)
bnxt_queue_remap(bp, tc_mask);
rc = hwrm_req_init(bp, req, HWRM_QUEUE_PFCENABLE_CFG);
if (rc)
return rc;
req->flags = cpu_to_le32(pri_mask);
return hwrm_req_send(bp, req);
}
static int bnxt_hwrm_queue_pfc_qcfg(struct bnxt *bp, struct ieee_pfc *pfc)
{
struct hwrm_queue_pfcenable_qcfg_output *resp;
struct hwrm_queue_pfcenable_qcfg_input *req;
u8 pri_mask;
int rc;
rc = hwrm_req_init(bp, req, HWRM_QUEUE_PFCENABLE_QCFG);
if (rc)
return rc;
resp = hwrm_req_hold(bp, req);
rc = hwrm_req_send(bp, req);
if (rc) {
hwrm_req_drop(bp, req);
return rc;
}
pri_mask = le32_to_cpu(resp->flags);
pfc->pfc_en = pri_mask;
hwrm_req_drop(bp, req);
return 0;
}
static int bnxt_hwrm_set_dcbx_app(struct bnxt *bp, struct dcb_app *app,
bool add)
{
struct hwrm_fw_set_structured_data_input *set;
struct hwrm_fw_get_structured_data_input *get;
struct hwrm_struct_data_dcbx_app *fw_app;
struct hwrm_struct_hdr *data;
dma_addr_t mapping;
size_t data_len;
int rc, n, i;
if (bp->hwrm_spec_code < 0x10601)
return 0;
rc = hwrm_req_init(bp, get, HWRM_FW_GET_STRUCTURED_DATA);
if (rc)
return rc;
hwrm_req_hold(bp, get);
hwrm_req_alloc_flags(bp, get, GFP_KERNEL | __GFP_ZERO);
n = IEEE_8021QAZ_MAX_TCS;
data_len = sizeof(*data) + sizeof(*fw_app) * n;
data = hwrm_req_dma_slice(bp, get, data_len, &mapping);
if (!data) {
rc = -ENOMEM;
goto set_app_exit;
}
get->dest_data_addr = cpu_to_le64(mapping);
get->structure_id = cpu_to_le16(STRUCT_HDR_STRUCT_ID_DCBX_APP);
get->subtype = cpu_to_le16(HWRM_STRUCT_DATA_SUBTYPE_HOST_OPERATIONAL);
get->count = 0;
rc = hwrm_req_send(bp, get);
if (rc)
goto set_app_exit;
fw_app = (struct hwrm_struct_data_dcbx_app *)(data + 1);
if (data->struct_id != cpu_to_le16(STRUCT_HDR_STRUCT_ID_DCBX_APP)) {
rc = -ENODEV;
goto set_app_exit;
}
n = data->count;
for (i = 0; i < n; i++, fw_app++) {
if (fw_app->protocol_id == cpu_to_be16(app->protocol) &&
fw_app->protocol_selector == app->selector &&
fw_app->priority == app->priority) {
if (add)
goto set_app_exit;
else
break;
}
}
if (add) {
/* append */
n++;
fw_app->protocol_id = cpu_to_be16(app->protocol);
fw_app->protocol_selector = app->selector;
fw_app->priority = app->priority;
fw_app->valid = 1;
} else {
size_t len = 0;
/* not found, nothing to delete */
if (n == i)
goto set_app_exit;
len = (n - 1 - i) * sizeof(*fw_app);
if (len)
memmove(fw_app, fw_app + 1, len);
n--;
memset(fw_app + n, 0, sizeof(*fw_app));
}
data->count = n;
data->len = cpu_to_le16(sizeof(*fw_app) * n);
data->subtype = cpu_to_le16(HWRM_STRUCT_DATA_SUBTYPE_HOST_OPERATIONAL);
rc = hwrm_req_init(bp, set, HWRM_FW_SET_STRUCTURED_DATA);
if (rc)
goto set_app_exit;
set->src_data_addr = cpu_to_le64(mapping);
set->data_len = cpu_to_le16(sizeof(*data) + sizeof(*fw_app) * n);
set->hdr_cnt = 1;
rc = hwrm_req_send(bp, set);
set_app_exit:
hwrm_req_drop(bp, get); /* dropping get request and associated slice */
return rc;
}
static int bnxt_hwrm_queue_dscp_qcaps(struct bnxt *bp)
{
struct hwrm_queue_dscp_qcaps_output *resp;
struct hwrm_queue_dscp_qcaps_input *req;
int rc;
bp->max_dscp_value = 0;
if (bp->hwrm_spec_code < 0x10800 || BNXT_VF(bp))
return 0;
rc = hwrm_req_init(bp, req, HWRM_QUEUE_DSCP_QCAPS);
if (rc)
return rc;
resp = hwrm_req_hold(bp, req);
rc = hwrm_req_send_silent(bp, req);
if (!rc) {
bp->max_dscp_value = (1 << resp->num_dscp_bits) - 1;
if (bp->max_dscp_value < 0x3f)
bp->max_dscp_value = 0;
}
hwrm_req_drop(bp, req);
return rc;
}
static int bnxt_hwrm_queue_dscp2pri_cfg(struct bnxt *bp, struct dcb_app *app,
bool add)
{
struct hwrm_queue_dscp2pri_cfg_input *req;
struct bnxt_dscp2pri_entry *dscp2pri;
dma_addr_t mapping;
int rc;
if (bp->hwrm_spec_code < 0x10800)
return 0;
rc = hwrm_req_init(bp, req, HWRM_QUEUE_DSCP2PRI_CFG);
if (rc)
return rc;
dscp2pri = hwrm_req_dma_slice(bp, req, sizeof(*dscp2pri), &mapping);
if (!dscp2pri) {
hwrm_req_drop(bp, req);
return -ENOMEM;
}
req->src_data_addr = cpu_to_le64(mapping);
dscp2pri->dscp = app->protocol;
if (add)
dscp2pri->mask = 0x3f;
else
dscp2pri->mask = 0;
dscp2pri->pri = app->priority;
req->entry_cnt = cpu_to_le16(1);
rc = hwrm_req_send(bp, req);
return rc;
}
static int bnxt_ets_validate(struct bnxt *bp, struct ieee_ets *ets, u8 *tc)
{
int total_ets_bw = 0;
bool zero = false;
u8 max_tc = 0;
int i;
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
if (ets->prio_tc[i] > bp->max_tc) {
netdev_err(bp->dev, "priority to TC mapping exceeds TC count %d\n",
ets->prio_tc[i]);
return -EINVAL;
}
if (ets->prio_tc[i] > max_tc)
max_tc = ets->prio_tc[i];
if ((ets->tc_tx_bw[i] || ets->tc_tsa[i]) && i > bp->max_tc)
return -EINVAL;
switch (ets->tc_tsa[i]) {
case IEEE_8021QAZ_TSA_STRICT:
break;
case IEEE_8021QAZ_TSA_ETS:
total_ets_bw += ets->tc_tx_bw[i];
zero = zero || !ets->tc_tx_bw[i];
break;
default:
return -ENOTSUPP;
}
}
if (total_ets_bw > 100) {
netdev_warn(bp->dev, "rejecting ETS config exceeding available bandwidth\n");
return -EINVAL;
}
if (zero && total_ets_bw == 100) {
netdev_warn(bp->dev, "rejecting ETS config starving a TC\n");
return -EINVAL;
}
if (max_tc >= bp->max_tc)
*tc = bp->max_tc;
else
*tc = max_tc + 1;
return 0;
}
static int bnxt_dcbnl_ieee_getets(struct net_device *dev, struct ieee_ets *ets)
{
struct bnxt *bp = netdev_priv(dev);
struct ieee_ets *my_ets = bp->ieee_ets;
int rc;
ets->ets_cap = bp->max_tc;
if (!my_ets) {
if (bp->dcbx_cap & DCB_CAP_DCBX_HOST)
return 0;
my_ets = kzalloc(sizeof(*my_ets), GFP_KERNEL);
if (!my_ets)
return -ENOMEM;
rc = bnxt_hwrm_queue_cos2bw_qcfg(bp, my_ets);
if (rc)
goto error;
rc = bnxt_hwrm_queue_pri2cos_qcfg(bp, my_ets);
if (rc)
goto error;
/* cache result */
bp->ieee_ets = my_ets;
}
ets->cbs = my_ets->cbs;
memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw));
memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
return 0;
error:
kfree(my_ets);
return rc;
}
static int bnxt_dcbnl_ieee_setets(struct net_device *dev, struct ieee_ets *ets)
{
struct bnxt *bp = netdev_priv(dev);
struct ieee_ets *my_ets = bp->ieee_ets;
u8 max_tc = 0;
int rc, i;
if (!(bp->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) ||
!(bp->dcbx_cap & DCB_CAP_DCBX_HOST))
return -EINVAL;
rc = bnxt_ets_validate(bp, ets, &max_tc);
if (!rc) {
if (!my_ets) {
my_ets = kzalloc(sizeof(*my_ets), GFP_KERNEL);
if (!my_ets)
return -ENOMEM;
/* initialize PRI2TC mappings to invalid value */
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
my_ets->prio_tc[i] = IEEE_8021QAZ_MAX_TCS;
bp->ieee_ets = my_ets;
}
rc = bnxt_setup_mq_tc(dev, max_tc);
if (rc)
return rc;
rc = bnxt_hwrm_queue_cos2bw_cfg(bp, ets, max_tc);
if (rc)
return rc;
rc = bnxt_hwrm_queue_pri2cos_cfg(bp, ets);
if (rc)
return rc;
memcpy(my_ets, ets, sizeof(*my_ets));
}
return rc;
}
static int bnxt_dcbnl_ieee_getpfc(struct net_device *dev, struct ieee_pfc *pfc)
{
struct bnxt *bp = netdev_priv(dev);
__le64 *stats = bp->port_stats.hw_stats;
struct ieee_pfc *my_pfc = bp->ieee_pfc;
long rx_off, tx_off;
int i, rc;
pfc->pfc_cap = bp->max_lltc;
if (!my_pfc) {
if (bp->dcbx_cap & DCB_CAP_DCBX_HOST)
return 0;
my_pfc = kzalloc(sizeof(*my_pfc), GFP_KERNEL);
if (!my_pfc)
return 0;
bp->ieee_pfc = my_pfc;
rc = bnxt_hwrm_queue_pfc_qcfg(bp, my_pfc);
if (rc)
return 0;
}
pfc->pfc_en = my_pfc->pfc_en;
pfc->mbc = my_pfc->mbc;
pfc->delay = my_pfc->delay;
if (!stats)
return 0;
rx_off = BNXT_RX_STATS_OFFSET(rx_pfc_ena_frames_pri0);
tx_off = BNXT_TX_STATS_OFFSET(tx_pfc_ena_frames_pri0);
for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++, rx_off++, tx_off++) {
pfc->requests[i] = le64_to_cpu(*(stats + tx_off));
pfc->indications[i] = le64_to_cpu(*(stats + rx_off));
}
return 0;
}
static int bnxt_dcbnl_ieee_setpfc(struct net_device *dev, struct ieee_pfc *pfc)
{
struct bnxt *bp = netdev_priv(dev);
struct ieee_pfc *my_pfc = bp->ieee_pfc;
int rc;
if (!(bp->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) ||
!(bp->dcbx_cap & DCB_CAP_DCBX_HOST) ||
(bp->phy_flags & BNXT_PHY_FL_NO_PAUSE))
return -EINVAL;
if (!my_pfc) {
my_pfc = kzalloc(sizeof(*my_pfc), GFP_KERNEL);
if (!my_pfc)
return -ENOMEM;
bp->ieee_pfc = my_pfc;
}
rc = bnxt_hwrm_queue_pfc_cfg(bp, pfc);
if (!rc)
memcpy(my_pfc, pfc, sizeof(*my_pfc));
return rc;
}
static int bnxt_dcbnl_ieee_dscp_app_prep(struct bnxt *bp, struct dcb_app *app)
{
if (app->selector == IEEE_8021QAZ_APP_SEL_DSCP) {
if (!bp->max_dscp_value)
return -ENOTSUPP;
if (app->protocol > bp->max_dscp_value)
return -EINVAL;
}
return 0;
}
static int bnxt_dcbnl_ieee_setapp(struct net_device *dev, struct dcb_app *app)
{
struct bnxt *bp = netdev_priv(dev);
int rc;
if (!(bp->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) ||
!(bp->dcbx_cap & DCB_CAP_DCBX_HOST))
return -EINVAL;
rc = bnxt_dcbnl_ieee_dscp_app_prep(bp, app);
if (rc)
return rc;
rc = dcb_ieee_setapp(dev, app);
if (rc)
return rc;
if ((app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
app->protocol == ETH_P_IBOE) ||
(app->selector == IEEE_8021QAZ_APP_SEL_DGRAM &&
app->protocol == ROCE_V2_UDP_DPORT))
rc = bnxt_hwrm_set_dcbx_app(bp, app, true);
if (app->selector == IEEE_8021QAZ_APP_SEL_DSCP)
rc = bnxt_hwrm_queue_dscp2pri_cfg(bp, app, true);
return rc;
}
static int bnxt_dcbnl_ieee_delapp(struct net_device *dev, struct dcb_app *app)
{
struct bnxt *bp = netdev_priv(dev);
int rc;
if (!(bp->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) ||
!(bp->dcbx_cap & DCB_CAP_DCBX_HOST))
return -EINVAL;
rc = bnxt_dcbnl_ieee_dscp_app_prep(bp, app);
if (rc)
return rc;
rc = dcb_ieee_delapp(dev, app);
if (rc)
return rc;
if ((app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
app->protocol == ETH_P_IBOE) ||
(app->selector == IEEE_8021QAZ_APP_SEL_DGRAM &&
app->protocol == ROCE_V2_UDP_DPORT))
rc = bnxt_hwrm_set_dcbx_app(bp, app, false);
if (app->selector == IEEE_8021QAZ_APP_SEL_DSCP)
rc = bnxt_hwrm_queue_dscp2pri_cfg(bp, app, false);
return rc;
}
static u8 bnxt_dcbnl_getdcbx(struct net_device *dev)
{
struct bnxt *bp = netdev_priv(dev);
return bp->dcbx_cap;
}
static u8 bnxt_dcbnl_setdcbx(struct net_device *dev, u8 mode)
{
struct bnxt *bp = netdev_priv(dev);
/* All firmware DCBX settings are set in NVRAM */
if (bp->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED)
return 1;
if (mode & DCB_CAP_DCBX_HOST) {
if (BNXT_VF(bp) || (bp->fw_cap & BNXT_FW_CAP_LLDP_AGENT))
return 1;
/* only support IEEE */
if ((mode & DCB_CAP_DCBX_VER_CEE) ||
!(mode & DCB_CAP_DCBX_VER_IEEE))
return 1;
}
if (mode == bp->dcbx_cap)
return 0;
bp->dcbx_cap = mode;
return 0;
}
static const struct dcbnl_rtnl_ops dcbnl_ops = {
.ieee_getets = bnxt_dcbnl_ieee_getets,
.ieee_setets = bnxt_dcbnl_ieee_setets,
.ieee_getpfc = bnxt_dcbnl_ieee_getpfc,
.ieee_setpfc = bnxt_dcbnl_ieee_setpfc,
.ieee_setapp = bnxt_dcbnl_ieee_setapp,
.ieee_delapp = bnxt_dcbnl_ieee_delapp,
.getdcbx = bnxt_dcbnl_getdcbx,
.setdcbx = bnxt_dcbnl_setdcbx,
};
void bnxt_dcb_init(struct bnxt *bp)
{
bp->dcbx_cap = 0;
if (bp->hwrm_spec_code < 0x10501)
return;
bnxt_hwrm_queue_dscp_qcaps(bp);
bp->dcbx_cap = DCB_CAP_DCBX_VER_IEEE;
if (BNXT_PF(bp) && !(bp->fw_cap & BNXT_FW_CAP_LLDP_AGENT))
bp->dcbx_cap |= DCB_CAP_DCBX_HOST;
else if (bp->fw_cap & BNXT_FW_CAP_DCBX_AGENT)
bp->dcbx_cap |= DCB_CAP_DCBX_LLD_MANAGED;
bp->dev->dcbnl_ops = &dcbnl_ops;
}
void bnxt_dcb_free(struct bnxt *bp)
{
kfree(bp->ieee_pfc);
kfree(bp->ieee_ets);
bp->ieee_pfc = NULL;
bp->ieee_ets = NULL;
}
#else
void bnxt_dcb_init(struct bnxt *bp)
{
}
void bnxt_dcb_free(struct bnxt *bp)
{
}
#endif
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