- 根目录:
- drivers
- net
- ethernet
- intel
- i40e
- i40e_dcb.c
/*******************************************************************************
*
* Intel Ethernet Controller XL710 Family Linux Driver
* Copyright(c) 2013 - 2014 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, see <http://www.gnu.org/licenses/>.
*
* 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_adminq.h"
#include "i40e_prototype.h"
#include "i40e_dcb.h"
/**
* i40e_get_dcbx_status
* @hw: pointer to the hw struct
* @status: Embedded DCBX Engine Status
*
* Get the DCBX status from the Firmware
**/
i40e_status i40e_get_dcbx_status(struct i40e_hw *hw, u16 *status)
{
u32 reg;
if (!status)
return I40E_ERR_PARAM;
reg = rd32(hw, I40E_PRTDCB_GENS);
*status = (u16)((reg & I40E_PRTDCB_GENS_DCBX_STATUS_MASK) >>
I40E_PRTDCB_GENS_DCBX_STATUS_SHIFT);
return 0;
}
/**
* i40e_parse_ieee_etscfg_tlv
* @tlv: IEEE 802.1Qaz ETS CFG TLV
* @dcbcfg: Local store to update ETS CFG data
*
* Parses IEEE 802.1Qaz ETS CFG TLV
**/
static void i40e_parse_ieee_etscfg_tlv(struct i40e_lldp_org_tlv *tlv,
struct i40e_dcbx_config *dcbcfg)
{
struct i40e_dcb_ets_config *etscfg;
u8 *buf = tlv->tlvinfo;
u16 offset = 0;
u8 priority;
int i;
/* First Octet post subtype
* --------------------------
* |will-|CBS | Re- | Max |
* |ing | |served| TCs |
* --------------------------
* |1bit | 1bit|3 bits|3bits|
*/
etscfg = &dcbcfg->etscfg;
etscfg->willing = (u8)((buf[offset] & I40E_IEEE_ETS_WILLING_MASK) >>
I40E_IEEE_ETS_WILLING_SHIFT);
etscfg->cbs = (u8)((buf[offset] & I40E_IEEE_ETS_CBS_MASK) >>
I40E_IEEE_ETS_CBS_SHIFT);
etscfg->maxtcs = (u8)((buf[offset] & I40E_IEEE_ETS_MAXTC_MASK) >>
I40E_IEEE_ETS_MAXTC_SHIFT);
/* Move offset to Priority Assignment Table */
offset++;
/* Priority Assignment Table (4 octets)
* Octets:| 1 | 2 | 3 | 4 |
* -----------------------------------------
* |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
* -----------------------------------------
* Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
* -----------------------------------------
*/
for (i = 0; i < 4; i++) {
priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_1_MASK) >>
I40E_IEEE_ETS_PRIO_1_SHIFT);
etscfg->prioritytable[i * 2] = priority;
priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_0_MASK) >>
I40E_IEEE_ETS_PRIO_0_SHIFT);
etscfg->prioritytable[i * 2 + 1] = priority;
offset++;
}
/* TC Bandwidth Table (8 octets)
* Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
* ---------------------------------
* |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
* ---------------------------------
*/
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
etscfg->tcbwtable[i] = buf[offset++];
/* TSA Assignment Table (8 octets)
* Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
* ---------------------------------
* |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
* ---------------------------------
*/
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
etscfg->tsatable[i] = buf[offset++];
}
/**
* i40e_parse_ieee_etsrec_tlv
* @tlv: IEEE 802.1Qaz ETS REC TLV
* @dcbcfg: Local store to update ETS REC data
*
* Parses IEEE 802.1Qaz ETS REC TLV
**/
static void i40e_parse_ieee_etsrec_tlv(struct i40e_lldp_org_tlv *tlv,
struct i40e_dcbx_config *dcbcfg)
{
u8 *buf = tlv->tlvinfo;
u16 offset = 0;
u8 priority;
int i;
/* Move offset to priority table */
offset++;
/* Priority Assignment Table (4 octets)
* Octets:| 1 | 2 | 3 | 4 |
* -----------------------------------------
* |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
* -----------------------------------------
* Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
* -----------------------------------------
*/
for (i = 0; i < 4; i++) {
priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_1_MASK) >>
I40E_IEEE_ETS_PRIO_1_SHIFT);
dcbcfg->etsrec.prioritytable[i*2] = priority;
priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_0_MASK) >>
I40E_IEEE_ETS_PRIO_0_SHIFT);
dcbcfg->etsrec.prioritytable[i*2 + 1] = priority;
offset++;
}
/* TC Bandwidth Table (8 octets)
* Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
* ---------------------------------
* |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
* ---------------------------------
*/
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
dcbcfg->etsrec.tcbwtable[i] = buf[offset++];
/* TSA Assignment Table (8 octets)
* Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
* ---------------------------------
* |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
* ---------------------------------
*/
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
dcbcfg->etsrec.tsatable[i] = buf[offset++];
}
/**
* i40e_parse_ieee_pfccfg_tlv
* @tlv: IEEE 802.1Qaz PFC CFG TLV
* @dcbcfg: Local store to update PFC CFG data
*
* Parses IEEE 802.1Qaz PFC CFG TLV
**/
static void i40e_parse_ieee_pfccfg_tlv(struct i40e_lldp_org_tlv *tlv,
struct i40e_dcbx_config *dcbcfg)
{
u8 *buf = tlv->tlvinfo;
/* ----------------------------------------
* |will-|MBC | Re- | PFC | PFC Enable |
* |ing | |served| cap | |
* -----------------------------------------
* |1bit | 1bit|2 bits|4bits| 1 octet |
*/
dcbcfg->pfc.willing = (u8)((buf[0] & I40E_IEEE_PFC_WILLING_MASK) >>
I40E_IEEE_PFC_WILLING_SHIFT);
dcbcfg->pfc.mbc = (u8)((buf[0] & I40E_IEEE_PFC_MBC_MASK) >>
I40E_IEEE_PFC_MBC_SHIFT);
dcbcfg->pfc.pfccap = (u8)((buf[0] & I40E_IEEE_PFC_CAP_MASK) >>
I40E_IEEE_PFC_CAP_SHIFT);
dcbcfg->pfc.pfcenable = buf[1];
}
/**
* i40e_parse_ieee_app_tlv
* @tlv: IEEE 802.1Qaz APP TLV
* @dcbcfg: Local store to update APP PRIO data
*
* Parses IEEE 802.1Qaz APP PRIO TLV
**/
static void i40e_parse_ieee_app_tlv(struct i40e_lldp_org_tlv *tlv,
struct i40e_dcbx_config *dcbcfg)
{
u16 typelength;
u16 offset = 0;
u16 length;
int i = 0;
u8 *buf;
typelength = ntohs(tlv->typelength);
length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
I40E_LLDP_TLV_LEN_SHIFT);
buf = tlv->tlvinfo;
/* The App priority table starts 5 octets after TLV header */
length -= (sizeof(tlv->ouisubtype) + 1);
/* Move offset to App Priority Table */
offset++;
/* Application Priority Table (3 octets)
* Octets:| 1 | 2 | 3 |
* -----------------------------------------
* |Priority|Rsrvd| Sel | Protocol ID |
* -----------------------------------------
* Bits:|23 21|20 19|18 16|15 0|
* -----------------------------------------
*/
while (offset < length) {
dcbcfg->app[i].priority = (u8)((buf[offset] &
I40E_IEEE_APP_PRIO_MASK) >>
I40E_IEEE_APP_PRIO_SHIFT);
dcbcfg->app[i].selector = (u8)((buf[offset] &
I40E_IEEE_APP_SEL_MASK) >>
I40E_IEEE_APP_SEL_SHIFT);
dcbcfg->app[i].protocolid = (buf[offset + 1] << 0x8) |
buf[offset + 2];
/* Move to next app */
offset += 3;
i++;
if (i >= I40E_DCBX_MAX_APPS)
break;
}
dcbcfg->numapps = i;
}
/**
* i40e_parse_ieee_etsrec_tlv
* @tlv: IEEE 802.1Qaz TLV
* @dcbcfg: Local store to update ETS REC data
*
* Get the TLV subtype and send it to parsing function
* based on the subtype value
**/
static void i40e_parse_ieee_tlv(struct i40e_lldp_org_tlv *tlv,
struct i40e_dcbx_config *dcbcfg)
{
u32 ouisubtype;
u8 subtype;
ouisubtype = ntohl(tlv->ouisubtype);
subtype = (u8)((ouisubtype & I40E_LLDP_TLV_SUBTYPE_MASK) >>
I40E_LLDP_TLV_SUBTYPE_SHIFT);
switch (subtype) {
case I40E_IEEE_SUBTYPE_ETS_CFG:
i40e_parse_ieee_etscfg_tlv(tlv, dcbcfg);
break;
case I40E_IEEE_SUBTYPE_ETS_REC:
i40e_parse_ieee_etsrec_tlv(tlv, dcbcfg);
break;
case I40E_IEEE_SUBTYPE_PFC_CFG:
i40e_parse_ieee_pfccfg_tlv(tlv, dcbcfg);
break;
case I40E_IEEE_SUBTYPE_APP_PRI:
i40e_parse_ieee_app_tlv(tlv, dcbcfg);
break;
default:
break;
}
}
/**
* i40e_parse_org_tlv
* @tlv: Organization specific TLV
* @dcbcfg: Local store to update ETS REC data
*
* Currently only IEEE 802.1Qaz TLV is supported, all others
* will be returned
**/
static void i40e_parse_org_tlv(struct i40e_lldp_org_tlv *tlv,
struct i40e_dcbx_config *dcbcfg)
{
u32 ouisubtype;
u32 oui;
ouisubtype = ntohl(tlv->ouisubtype);
oui = (u32)((ouisubtype & I40E_LLDP_TLV_OUI_MASK) >>
I40E_LLDP_TLV_OUI_SHIFT);
switch (oui) {
case I40E_IEEE_8021QAZ_OUI:
i40e_parse_ieee_tlv(tlv, dcbcfg);
break;
default:
break;
}
}
/**
* i40e_lldp_to_dcb_config
* @lldpmib: LLDPDU to be parsed
* @dcbcfg: store for LLDPDU data
*
* Parse DCB configuration from the LLDPDU
**/
i40e_status i40e_lldp_to_dcb_config(u8 *lldpmib,
struct i40e_dcbx_config *dcbcfg)
{
i40e_status ret = 0;
struct i40e_lldp_org_tlv *tlv;
u16 type;
u16 length;
u16 typelength;
u16 offset = 0;
if (!lldpmib || !dcbcfg)
return I40E_ERR_PARAM;
/* set to the start of LLDPDU */
lldpmib += ETH_HLEN;
tlv = (struct i40e_lldp_org_tlv *)lldpmib;
while (1) {
typelength = ntohs(tlv->typelength);
type = (u16)((typelength & I40E_LLDP_TLV_TYPE_MASK) >>
I40E_LLDP_TLV_TYPE_SHIFT);
length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
I40E_LLDP_TLV_LEN_SHIFT);
offset += sizeof(typelength) + length;
/* END TLV or beyond LLDPDU size */
if ((type == I40E_TLV_TYPE_END) || (offset > I40E_LLDPDU_SIZE))
break;
switch (type) {
case I40E_TLV_TYPE_ORG:
i40e_parse_org_tlv(tlv, dcbcfg);
break;
default:
break;
}
/* Move to next TLV */
tlv = (struct i40e_lldp_org_tlv *)((char *)tlv +
sizeof(tlv->typelength) +
length);
}
return ret;
}
/**
* i40e_aq_get_dcb_config
* @hw: pointer to the hw struct
* @mib_type: mib type for the query
* @bridgetype: bridge type for the query (remote)
* @dcbcfg: store for LLDPDU data
*
* Query DCB configuration from the Firmware
**/
i40e_status i40e_aq_get_dcb_config(struct i40e_hw *hw, u8 mib_type,
u8 bridgetype,
struct i40e_dcbx_config *dcbcfg)
{
i40e_status ret = 0;
struct i40e_virt_mem mem;
u8 *lldpmib;
/* Allocate the LLDPDU */
ret = i40e_allocate_virt_mem(hw, &mem, I40E_LLDPDU_SIZE);
if (ret)
return ret;
lldpmib = (u8 *)mem.va;
ret = i40e_aq_get_lldp_mib(hw, bridgetype, mib_type,
(void *)lldpmib, I40E_LLDPDU_SIZE,
NULL, NULL, NULL);
if (ret)
goto free_mem;
/* Parse LLDP MIB to get dcb configuration */
ret = i40e_lldp_to_dcb_config(lldpmib, dcbcfg);
free_mem:
i40e_free_virt_mem(hw, &mem);
return ret;
}
/**
* i40e_cee_to_dcb_v1_config
* @cee_cfg: pointer to CEE v1 response configuration struct
* @dcbcfg: DCB configuration struct
*
* Convert CEE v1 configuration from firmware to DCB configuration
**/
static void i40e_cee_to_dcb_v1_config(
struct i40e_aqc_get_cee_dcb_cfg_v1_resp *cee_cfg,
struct i40e_dcbx_config *dcbcfg)
{
u16 status, tlv_status = le16_to_cpu(cee_cfg->tlv_status);
u16 app_prio = le16_to_cpu(cee_cfg->oper_app_prio);
u8 i, tc, err;
/* CEE PG data to ETS config */
dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc;
for (i = 0; i < 4; i++) {
tc = (u8)((cee_cfg->oper_prio_tc[i] &
I40E_CEE_PGID_PRIO_1_MASK) >>
I40E_CEE_PGID_PRIO_1_SHIFT);
dcbcfg->etscfg.prioritytable[i*2] = tc;
tc = (u8)((cee_cfg->oper_prio_tc[i] &
I40E_CEE_PGID_PRIO_0_MASK) >>
I40E_CEE_PGID_PRIO_0_SHIFT);
dcbcfg->etscfg.prioritytable[i*2 + 1] = tc;
}
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i];
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
if (dcbcfg->etscfg.prioritytable[i] == I40E_CEE_PGID_STRICT) {
/* Map it to next empty TC */
dcbcfg->etscfg.prioritytable[i] =
cee_cfg->oper_num_tc - 1;
dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_STRICT;
} else {
dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_ETS;
}
}
/* CEE PFC data to ETS config */
dcbcfg->pfc.pfcenable = cee_cfg->oper_pfc_en;
dcbcfg->pfc.pfccap = I40E_MAX_TRAFFIC_CLASS;
status = (tlv_status & I40E_AQC_CEE_APP_STATUS_MASK) >>
I40E_AQC_CEE_APP_STATUS_SHIFT;
err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
/* Add APPs if Error is False */
if (!err) {
/* CEE operating configuration supports FCoE/iSCSI/FIP only */
dcbcfg->numapps = I40E_CEE_OPER_MAX_APPS;
/* FCoE APP */
dcbcfg->app[0].priority =
(app_prio & I40E_AQC_CEE_APP_FCOE_MASK) >>
I40E_AQC_CEE_APP_FCOE_SHIFT;
dcbcfg->app[0].selector = I40E_APP_SEL_ETHTYPE;
dcbcfg->app[0].protocolid = I40E_APP_PROTOID_FCOE;
/* iSCSI APP */
dcbcfg->app[1].priority =
(app_prio & I40E_AQC_CEE_APP_ISCSI_MASK) >>
I40E_AQC_CEE_APP_ISCSI_SHIFT;
dcbcfg->app[1].selector = I40E_APP_SEL_TCPIP;
dcbcfg->app[1].protocolid = I40E_APP_PROTOID_ISCSI;
/* FIP APP */
dcbcfg->app[2].priority =
(app_prio & I40E_AQC_CEE_APP_FIP_MASK) >>
I40E_AQC_CEE_APP_FIP_SHIFT;
dcbcfg->app[2].selector = I40E_APP_SEL_ETHTYPE;
dcbcfg->app[2].protocolid = I40E_APP_PROTOID_FIP;
}
}
/**
* i40e_cee_to_dcb_config
* @cee_cfg: pointer to CEE configuration struct
* @dcbcfg: DCB configuration struct
*
* Convert CEE configuration from firmware to DCB configuration
**/
static void i40e_cee_to_dcb_config(
struct i40e_aqc_get_cee_dcb_cfg_resp *cee_cfg,
struct i40e_dcbx_config *dcbcfg)
{
u32 status, tlv_status = le32_to_cpu(cee_cfg->tlv_status);
u16 app_prio = le16_to_cpu(cee_cfg->oper_app_prio);
u8 i, tc, err, sync, oper;
/* CEE PG data to ETS config */
dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc;
for (i = 0; i < 4; i++) {
tc = (u8)((cee_cfg->oper_prio_tc[i] &
I40E_CEE_PGID_PRIO_1_MASK) >>
I40E_CEE_PGID_PRIO_1_SHIFT);
dcbcfg->etscfg.prioritytable[i*2] = tc;
tc = (u8)((cee_cfg->oper_prio_tc[i] &
I40E_CEE_PGID_PRIO_0_MASK) >>
I40E_CEE_PGID_PRIO_0_SHIFT);
dcbcfg->etscfg.prioritytable[i*2 + 1] = tc;
}
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i];
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
if (dcbcfg->etscfg.prioritytable[i] == I40E_CEE_PGID_STRICT) {
/* Map it to next empty TC */
dcbcfg->etscfg.prioritytable[i] =
cee_cfg->oper_num_tc - 1;
dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_STRICT;
} else {
dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_ETS;
}
}
/* CEE PFC data to ETS config */
dcbcfg->pfc.pfcenable = cee_cfg->oper_pfc_en;
dcbcfg->pfc.pfccap = I40E_MAX_TRAFFIC_CLASS;
status = (tlv_status & I40E_AQC_CEE_APP_STATUS_MASK) >>
I40E_AQC_CEE_APP_STATUS_SHIFT;
err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
sync = (status & I40E_TLV_STATUS_SYNC) ? 1 : 0;
oper = (status & I40E_TLV_STATUS_OPER) ? 1 : 0;
/* Add APPs if Error is False and Oper/Sync is True */
if (!err && sync && oper) {
/* CEE operating configuration supports FCoE/iSCSI/FIP only */
dcbcfg->numapps = I40E_CEE_OPER_MAX_APPS;
/* FCoE APP */
dcbcfg->app[0].priority =
(app_prio & I40E_AQC_CEE_APP_FCOE_MASK) >>
I40E_AQC_CEE_APP_FCOE_SHIFT;
dcbcfg->app[0].selector = I40E_APP_SEL_ETHTYPE;
dcbcfg->app[0].protocolid = I40E_APP_PROTOID_FCOE;
/* iSCSI APP */
dcbcfg->app[1].priority =
(app_prio & I40E_AQC_CEE_APP_ISCSI_MASK) >>
I40E_AQC_CEE_APP_ISCSI_SHIFT;
dcbcfg->app[1].selector = I40E_APP_SEL_TCPIP;
dcbcfg->app[1].protocolid = I40E_APP_PROTOID_ISCSI;
/* FIP APP */
dcbcfg->app[2].priority =
(app_prio & I40E_AQC_CEE_APP_FIP_MASK) >>
I40E_AQC_CEE_APP_FIP_SHIFT;
dcbcfg->app[2].selector = I40E_APP_SEL_ETHTYPE;
dcbcfg->app[2].protocolid = I40E_APP_PROTOID_FIP;
}
}
/**
* i40e_get_dcb_config
* @hw: pointer to the hw struct
*
* Get DCB configuration from the Firmware
**/
i40e_status i40e_get_dcb_config(struct i40e_hw *hw)
{
i40e_status ret = 0;
struct i40e_aqc_get_cee_dcb_cfg_resp cee_cfg;
struct i40e_aqc_get_cee_dcb_cfg_v1_resp cee_v1_cfg;
/* If Firmware version < v4.33 IEEE only */
if (((hw->aq.fw_maj_ver == 4) && (hw->aq.fw_min_ver < 33)) ||
(hw->aq.fw_maj_ver < 4))
goto ieee;
/* If Firmware version == v4.33 use old CEE struct */
if ((hw->aq.fw_maj_ver == 4) && (hw->aq.fw_min_ver == 33)) {
ret = i40e_aq_get_cee_dcb_config(hw, &cee_v1_cfg,
sizeof(cee_v1_cfg), NULL);
if (!ret) {
/* CEE mode */
hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_CEE;
i40e_cee_to_dcb_v1_config(&cee_v1_cfg,
&hw->local_dcbx_config);
}
} else {
ret = i40e_aq_get_cee_dcb_config(hw, &cee_cfg,
sizeof(cee_cfg), NULL);
if (!ret) {
/* CEE mode */
hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_CEE;
i40e_cee_to_dcb_config(&cee_cfg,
&hw->local_dcbx_config);
}
}
/* CEE mode not enabled try querying IEEE data */
if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT)
goto ieee;
else
goto out;
ieee:
/* IEEE mode */
hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_IEEE;
/* Get Local DCB Config */
ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_LOCAL, 0,
&hw->local_dcbx_config);
if (ret)
goto out;
/* Get Remote DCB Config */
ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
&hw->remote_dcbx_config);
/* Don't treat ENOENT as an error for Remote MIBs */
if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT)
ret = 0;
out:
return ret;
}
/**
* i40e_init_dcb
* @hw: pointer to the hw struct
*
* Update DCB configuration from the Firmware
**/
i40e_status i40e_init_dcb(struct i40e_hw *hw)
{
i40e_status ret = 0;
struct i40e_lldp_variables lldp_cfg;
u8 adminstatus = 0;
if (!hw->func_caps.dcb)
return ret;
/* Read LLDP NVM area */
ret = i40e_read_lldp_cfg(hw, &lldp_cfg);
if (ret)
return ret;
/* Get the LLDP AdminStatus for the current port */
adminstatus = lldp_cfg.adminstatus >> (hw->port * 4);
adminstatus &= 0xF;
/* LLDP agent disabled */
if (!adminstatus) {
hw->dcbx_status = I40E_DCBX_STATUS_DISABLED;
return ret;
}
/* Get DCBX status */
ret = i40e_get_dcbx_status(hw, &hw->dcbx_status);
if (ret)
return ret;
/* Check the DCBX Status */
switch (hw->dcbx_status) {
case I40E_DCBX_STATUS_DONE:
case I40E_DCBX_STATUS_IN_PROGRESS:
/* Get current DCBX configuration */
ret = i40e_get_dcb_config(hw);
if (ret)
return ret;
break;
case I40E_DCBX_STATUS_DISABLED:
return ret;
case I40E_DCBX_STATUS_NOT_STARTED:
case I40E_DCBX_STATUS_MULTIPLE_PEERS:
default:
break;
}
/* Configure the LLDP MIB change event */
ret = i40e_aq_cfg_lldp_mib_change_event(hw, true, NULL);
if (ret)
return ret;
return ret;
}
/**
* i40e_read_lldp_cfg - read LLDP Configuration data from NVM
* @hw: pointer to the HW structure
* @lldp_cfg: pointer to hold lldp configuration variables
*
* Reads the LLDP configuration data from NVM
**/
i40e_status i40e_read_lldp_cfg(struct i40e_hw *hw,
struct i40e_lldp_variables *lldp_cfg)
{
i40e_status ret = 0;
u32 offset = (2 * I40E_NVM_LLDP_CFG_PTR);
if (!lldp_cfg)
return I40E_ERR_PARAM;
ret = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
if (ret)
goto err_lldp_cfg;
ret = i40e_aq_read_nvm(hw, I40E_SR_EMP_MODULE_PTR, offset,
sizeof(struct i40e_lldp_variables),
(u8 *)lldp_cfg,
true, NULL);
i40e_release_nvm(hw);
err_lldp_cfg:
return ret;
}