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kernel/drivers/net/ethernet/intel/ice/ice_dcb.c
Jesse Brandeburg 316a28daa8 ice: cleanup inconsistent code 
It was found while doing further testing of the previous commit
fbf32a9bab91 ("ice: field get conversion") that one of the FIELD_GET
conversions should really be a FIELD_PREP. The previous code was styled
as a match to the FIELD_GET conversion, which always worked because the
shift value was 0.  The code makes way more sense as a FIELD_PREP and
was in fact the only FIELD_GET with two constant arguments in this
series.

Didn't squash this patch to make it easier to call out the
(non-impactful) bug.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2023-12-18 11:20:43 -08:00

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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2019, Intel Corporation. */
#include "ice_common.h"
#include "ice_sched.h"
#include "ice_dcb.h"
/**
* ice_aq_get_lldp_mib
* @hw: pointer to the HW struct
* @bridge_type: type of bridge requested
* @mib_type: Local, Remote or both Local and Remote MIBs
* @buf: pointer to the caller-supplied buffer to store the MIB block
* @buf_size: size of the buffer (in bytes)
* @local_len: length of the returned Local LLDP MIB
* @remote_len: length of the returned Remote LLDP MIB
* @cd: pointer to command details structure or NULL
*
* Requests the complete LLDP MIB (entire packet). (0x0A00)
*/
static int
ice_aq_get_lldp_mib(struct ice_hw *hw, u8 bridge_type, u8 mib_type, void *buf,
u16 buf_size, u16 *local_len, u16 *remote_len,
struct ice_sq_cd *cd)
{
struct ice_aqc_lldp_get_mib *cmd;
struct ice_aq_desc desc;
int status;
cmd = &desc.params.lldp_get_mib;
if (buf_size == 0 || !buf)
return -EINVAL;
ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_get_mib);
cmd->type = mib_type & ICE_AQ_LLDP_MIB_TYPE_M;
cmd->type |= FIELD_PREP(ICE_AQ_LLDP_BRID_TYPE_M, bridge_type);
desc.datalen = cpu_to_le16(buf_size);
status = ice_aq_send_cmd(hw, &desc, buf, buf_size, cd);
if (!status) {
if (local_len)
*local_len = le16_to_cpu(cmd->local_len);
if (remote_len)
*remote_len = le16_to_cpu(cmd->remote_len);
}
return status;
}
/**
* ice_aq_cfg_lldp_mib_change
* @hw: pointer to the HW struct
* @ena_update: Enable or Disable event posting
* @cd: pointer to command details structure or NULL
*
* Enable or Disable posting of an event on ARQ when LLDP MIB
* associated with the interface changes (0x0A01)
*/
static int
ice_aq_cfg_lldp_mib_change(struct ice_hw *hw, bool ena_update,
struct ice_sq_cd *cd)
{
struct ice_aqc_lldp_set_mib_change *cmd;
struct ice_aq_desc desc;
cmd = &desc.params.lldp_set_event;
ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_set_mib_change);
if (!ena_update)
cmd->command |= ICE_AQ_LLDP_MIB_UPDATE_DIS;
else
cmd->command |= FIELD_PREP(ICE_AQ_LLDP_MIB_PENDING_M,
ICE_AQ_LLDP_MIB_PENDING_ENABLE);
return ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
}
/**
* ice_aq_stop_lldp
* @hw: pointer to the HW struct
* @shutdown_lldp_agent: True if LLDP Agent needs to be Shutdown
* False if LLDP Agent needs to be Stopped
* @persist: True if Stop/Shutdown of LLDP Agent needs to be persistent across
* reboots
* @cd: pointer to command details structure or NULL
*
* Stop or Shutdown the embedded LLDP Agent (0x0A05)
*/
int
ice_aq_stop_lldp(struct ice_hw *hw, bool shutdown_lldp_agent, bool persist,
struct ice_sq_cd *cd)
{
struct ice_aqc_lldp_stop *cmd;
struct ice_aq_desc desc;
cmd = &desc.params.lldp_stop;
ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_stop);
if (shutdown_lldp_agent)
cmd->command |= ICE_AQ_LLDP_AGENT_SHUTDOWN;
if (persist)
cmd->command |= ICE_AQ_LLDP_AGENT_PERSIST_DIS;
return ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
}
/**
* ice_aq_start_lldp
* @hw: pointer to the HW struct
* @persist: True if Start of LLDP Agent needs to be persistent across reboots
* @cd: pointer to command details structure or NULL
*
* Start the embedded LLDP Agent on all ports. (0x0A06)
*/
int ice_aq_start_lldp(struct ice_hw *hw, bool persist, struct ice_sq_cd *cd)
{
struct ice_aqc_lldp_start *cmd;
struct ice_aq_desc desc;
cmd = &desc.params.lldp_start;
ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_start);
cmd->command = ICE_AQ_LLDP_AGENT_START;
if (persist)
cmd->command |= ICE_AQ_LLDP_AGENT_PERSIST_ENA;
return ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
}
/**
* ice_get_dcbx_status
* @hw: pointer to the HW struct
*
* Get the DCBX status from the Firmware
*/
static u8 ice_get_dcbx_status(struct ice_hw *hw)
{
u32 reg;
reg = rd32(hw, PRTDCB_GENS);
return FIELD_GET(PRTDCB_GENS_DCBX_STATUS_M, reg);
}
/**
* ice_parse_ieee_ets_common_tlv
* @buf: Data buffer to be parsed for ETS CFG/REC data
* @ets_cfg: Container to store parsed data
*
* Parses the common data of IEEE 802.1Qaz ETS CFG/REC TLV
*/
static void
ice_parse_ieee_ets_common_tlv(u8 *buf, struct ice_dcb_ets_cfg *ets_cfg)
{
u8 offset = 0;
int i;
/* 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++) {
ets_cfg->prio_table[i * 2] =
FIELD_GET(ICE_IEEE_ETS_PRIO_1_M, buf[offset]);
ets_cfg->prio_table[i * 2 + 1] =
FIELD_GET(ICE_IEEE_ETS_PRIO_0_M, buf[offset]);
offset++;
}
/* TC Bandwidth Table (8 octets)
* Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
* ---------------------------------
* |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
* ---------------------------------
*
* TSA Assignment Table (8 octets)
* Octets:| 9 | 10| 11| 12| 13| 14| 15| 16|
* ---------------------------------
* |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
* ---------------------------------
*/
ice_for_each_traffic_class(i) {
ets_cfg->tcbwtable[i] = buf[offset];
ets_cfg->tsatable[i] = buf[ICE_MAX_TRAFFIC_CLASS + offset++];
}
}
/**
* ice_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
ice_parse_ieee_etscfg_tlv(struct ice_lldp_org_tlv *tlv,
struct ice_dcbx_cfg *dcbcfg)
{
struct ice_dcb_ets_cfg *etscfg;
u8 *buf = tlv->tlvinfo;
/* First Octet post subtype
* --------------------------
* |will-|CBS | Re- | Max |
* |ing | |served| TCs |
* --------------------------
* |1bit | 1bit|3 bits|3bits|
*/
etscfg = &dcbcfg->etscfg;
etscfg->willing = FIELD_GET(ICE_IEEE_ETS_WILLING_M, buf[0]);
etscfg->cbs = FIELD_GET(ICE_IEEE_ETS_CBS_M, buf[0]);
etscfg->maxtcs = FIELD_GET(ICE_IEEE_ETS_MAXTC_M, buf[0]);
/* Begin parsing at Priority Assignment Table (offset 1 in buf) */
ice_parse_ieee_ets_common_tlv(&buf[1], etscfg);
}
/**
* ice_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
ice_parse_ieee_etsrec_tlv(struct ice_lldp_org_tlv *tlv,
struct ice_dcbx_cfg *dcbcfg)
{
u8 *buf = tlv->tlvinfo;
/* Begin parsing at Priority Assignment Table (offset 1 in buf) */
ice_parse_ieee_ets_common_tlv(&buf[1], &dcbcfg->etsrec);
}
/**
* ice_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
ice_parse_ieee_pfccfg_tlv(struct ice_lldp_org_tlv *tlv,
struct ice_dcbx_cfg *dcbcfg)
{
u8 *buf = tlv->tlvinfo;
/* ----------------------------------------
* |will-|MBC | Re- | PFC | PFC Enable |
* |ing | |served| cap | |
* -----------------------------------------
* |1bit | 1bit|2 bits|4bits| 1 octet |
*/
dcbcfg->pfc.willing = FIELD_GET(ICE_IEEE_PFC_WILLING_M, buf[0]);
dcbcfg->pfc.mbc = FIELD_GET(ICE_IEEE_PFC_MBC_M, buf[0]);
dcbcfg->pfc.pfccap = FIELD_GET(ICE_IEEE_PFC_CAP_M, buf[0]);
dcbcfg->pfc.pfcena = buf[1];
}
/**
* ice_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
ice_parse_ieee_app_tlv(struct ice_lldp_org_tlv *tlv,
struct ice_dcbx_cfg *dcbcfg)
{
u16 offset = 0;
u16 typelen;
int i = 0;
u16 len;
u8 *buf;
typelen = ntohs(tlv->typelen);
len = FIELD_GET(ICE_LLDP_TLV_LEN_M, typelen);
buf = tlv->tlvinfo;
/* Removing sizeof(ouisubtype) and reserved byte from len.
* Remaining len div 3 is number of APP TLVs.
*/
len -= (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 < len) {
dcbcfg->app[i].priority = FIELD_GET(ICE_IEEE_APP_PRIO_M,
buf[offset]);
dcbcfg->app[i].selector = FIELD_GET(ICE_IEEE_APP_SEL_M,
buf[offset]);
dcbcfg->app[i].prot_id = (buf[offset + 1] << 0x8) |
buf[offset + 2];
/* Move to next app */
offset += 3;
i++;
if (i >= ICE_DCBX_MAX_APPS)
break;
}
dcbcfg->numapps = i;
}
/**
* ice_parse_ieee_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
ice_parse_ieee_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
{
u32 ouisubtype;
u8 subtype;
ouisubtype = ntohl(tlv->ouisubtype);
subtype = FIELD_GET(ICE_LLDP_TLV_SUBTYPE_M, ouisubtype);
switch (subtype) {
case ICE_IEEE_SUBTYPE_ETS_CFG:
ice_parse_ieee_etscfg_tlv(tlv, dcbcfg);
break;
case ICE_IEEE_SUBTYPE_ETS_REC:
ice_parse_ieee_etsrec_tlv(tlv, dcbcfg);
break;
case ICE_IEEE_SUBTYPE_PFC_CFG:
ice_parse_ieee_pfccfg_tlv(tlv, dcbcfg);
break;
case ICE_IEEE_SUBTYPE_APP_PRI:
ice_parse_ieee_app_tlv(tlv, dcbcfg);
break;
default:
break;
}
}
/**
* ice_parse_cee_pgcfg_tlv
* @tlv: CEE DCBX PG CFG TLV
* @dcbcfg: Local store to update ETS CFG data
*
* Parses CEE DCBX PG CFG TLV
*/
static void
ice_parse_cee_pgcfg_tlv(struct ice_cee_feat_tlv *tlv,
struct ice_dcbx_cfg *dcbcfg)
{
struct ice_dcb_ets_cfg *etscfg;
u8 *buf = tlv->tlvinfo;
u16 offset = 0;
int i;
etscfg = &dcbcfg->etscfg;
if (tlv->en_will_err & ICE_CEE_FEAT_TLV_WILLING_M)
etscfg->willing = 1;
etscfg->cbs = 0;
/* Priority Group 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++) {
etscfg->prio_table[i * 2] =
FIELD_GET(ICE_CEE_PGID_PRIO_1_M, buf[offset]);
etscfg->prio_table[i * 2 + 1] =
FIELD_GET(ICE_CEE_PGID_PRIO_0_M, buf[offset]);
offset++;
}
/* PG Percentage Table (8 octets)
* Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
* ---------------------------------
* |pg0|pg1|pg2|pg3|pg4|pg5|pg6|pg7|
* ---------------------------------
*/
ice_for_each_traffic_class(i) {
etscfg->tcbwtable[i] = buf[offset++];
if (etscfg->prio_table[i] == ICE_CEE_PGID_STRICT)
dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_STRICT;
else
dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_ETS;
}
/* Number of TCs supported (1 octet) */
etscfg->maxtcs = buf[offset];
}
/**
* ice_parse_cee_pfccfg_tlv
* @tlv: CEE DCBX PFC CFG TLV
* @dcbcfg: Local store to update PFC CFG data
*
* Parses CEE DCBX PFC CFG TLV
*/
static void
ice_parse_cee_pfccfg_tlv(struct ice_cee_feat_tlv *tlv,
struct ice_dcbx_cfg *dcbcfg)
{
u8 *buf = tlv->tlvinfo;
if (tlv->en_will_err & ICE_CEE_FEAT_TLV_WILLING_M)
dcbcfg->pfc.willing = 1;
/* ------------------------
* | PFC Enable | PFC TCs |
* ------------------------
* | 1 octet | 1 octet |
*/
dcbcfg->pfc.pfcena = buf[0];
dcbcfg->pfc.pfccap = buf[1];
}
/**
* ice_parse_cee_app_tlv
* @tlv: CEE DCBX APP TLV
* @dcbcfg: Local store to update APP PRIO data
*
* Parses CEE DCBX APP PRIO TLV
*/
static void
ice_parse_cee_app_tlv(struct ice_cee_feat_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
{
u16 len, typelen, offset = 0;
struct ice_cee_app_prio *app;
u8 i;
typelen = ntohs(tlv->hdr.typelen);
len = FIELD_GET(ICE_LLDP_TLV_LEN_M, typelen);
dcbcfg->numapps = len / sizeof(*app);
if (!dcbcfg->numapps)
return;
if (dcbcfg->numapps > ICE_DCBX_MAX_APPS)
dcbcfg->numapps = ICE_DCBX_MAX_APPS;
for (i = 0; i < dcbcfg->numapps; i++) {
u8 up, selector;
app = (struct ice_cee_app_prio *)(tlv->tlvinfo + offset);
for (up = 0; up < ICE_MAX_USER_PRIORITY; up++)
if (app->prio_map & BIT(up))
break;
dcbcfg->app[i].priority = up;
/* Get Selector from lower 2 bits, and convert to IEEE */
selector = (app->upper_oui_sel & ICE_CEE_APP_SELECTOR_M);
switch (selector) {
case ICE_CEE_APP_SEL_ETHTYPE:
dcbcfg->app[i].selector = ICE_APP_SEL_ETHTYPE;
break;
case ICE_CEE_APP_SEL_TCPIP:
dcbcfg->app[i].selector = ICE_APP_SEL_TCPIP;
break;
default:
/* Keep selector as it is for unknown types */
dcbcfg->app[i].selector = selector;
}
dcbcfg->app[i].prot_id = ntohs(app->protocol);
/* Move to next app */
offset += sizeof(*app);
}
}
/**
* ice_parse_cee_tlv
* @tlv: CEE DCBX TLV
* @dcbcfg: Local store to update DCBX config data
*
* Get the TLV subtype and send it to parsing function
* based on the subtype value
*/
static void
ice_parse_cee_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
{
struct ice_cee_feat_tlv *sub_tlv;
u8 subtype, feat_tlv_count = 0;
u16 len, tlvlen, typelen;
u32 ouisubtype;
ouisubtype = ntohl(tlv->ouisubtype);
subtype = FIELD_GET(ICE_LLDP_TLV_SUBTYPE_M, ouisubtype);
/* Return if not CEE DCBX */
if (subtype != ICE_CEE_DCBX_TYPE)
return;
typelen = ntohs(tlv->typelen);
tlvlen = FIELD_GET(ICE_LLDP_TLV_LEN_M, typelen);
len = sizeof(tlv->typelen) + sizeof(ouisubtype) +
sizeof(struct ice_cee_ctrl_tlv);
/* Return if no CEE DCBX Feature TLVs */
if (tlvlen <= len)
return;
sub_tlv = (struct ice_cee_feat_tlv *)((char *)tlv + len);
while (feat_tlv_count < ICE_CEE_MAX_FEAT_TYPE) {
u16 sublen;
typelen = ntohs(sub_tlv->hdr.typelen);
sublen = FIELD_GET(ICE_LLDP_TLV_LEN_M, typelen);
subtype = FIELD_GET(ICE_LLDP_TLV_TYPE_M, typelen);
switch (subtype) {
case ICE_CEE_SUBTYPE_PG_CFG:
ice_parse_cee_pgcfg_tlv(sub_tlv, dcbcfg);
break;
case ICE_CEE_SUBTYPE_PFC_CFG:
ice_parse_cee_pfccfg_tlv(sub_tlv, dcbcfg);
break;
case ICE_CEE_SUBTYPE_APP_PRI:
ice_parse_cee_app_tlv(sub_tlv, dcbcfg);
break;
default:
return; /* Invalid Sub-type return */
}
feat_tlv_count++;
/* Move to next sub TLV */
sub_tlv = (struct ice_cee_feat_tlv *)
((char *)sub_tlv + sizeof(sub_tlv->hdr.typelen) +
sublen);
}
}
/**
* ice_parse_org_tlv
* @tlv: Organization specific TLV
* @dcbcfg: Local store to update ETS REC data
*
* Currently IEEE 802.1Qaz and CEE DCBX TLV are supported, others
* will be returned
*/
static void
ice_parse_org_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
{
u32 ouisubtype;
u32 oui;
ouisubtype = ntohl(tlv->ouisubtype);
oui = FIELD_GET(ICE_LLDP_TLV_OUI_M, ouisubtype);
switch (oui) {
case ICE_IEEE_8021QAZ_OUI:
ice_parse_ieee_tlv(tlv, dcbcfg);
break;
case ICE_CEE_DCBX_OUI:
ice_parse_cee_tlv(tlv, dcbcfg);
break;
default:
break; /* Other OUIs not supported */
}
}
/**
* ice_lldp_to_dcb_cfg
* @lldpmib: LLDPDU to be parsed
* @dcbcfg: store for LLDPDU data
*
* Parse DCB configuration from the LLDPDU
*/
static int ice_lldp_to_dcb_cfg(u8 *lldpmib, struct ice_dcbx_cfg *dcbcfg)
{
struct ice_lldp_org_tlv *tlv;
u16 offset = 0;
int ret = 0;
u16 typelen;
u16 type;
u16 len;
if (!lldpmib || !dcbcfg)
return -EINVAL;
/* set to the start of LLDPDU */
lldpmib += ETH_HLEN;
tlv = (struct ice_lldp_org_tlv *)lldpmib;
while (1) {
typelen = ntohs(tlv->typelen);
type = FIELD_GET(ICE_LLDP_TLV_TYPE_M, typelen);
len = FIELD_GET(ICE_LLDP_TLV_LEN_M, typelen);
offset += sizeof(typelen) + len;
/* END TLV or beyond LLDPDU size */
if (type == ICE_TLV_TYPE_END || offset > ICE_LLDPDU_SIZE)
break;
switch (type) {
case ICE_TLV_TYPE_ORG:
ice_parse_org_tlv(tlv, dcbcfg);
break;
default:
break;
}
/* Move to next TLV */
tlv = (struct ice_lldp_org_tlv *)
((char *)tlv + sizeof(tlv->typelen) + len);
}
return ret;
}
/**
* ice_aq_get_dcb_cfg
* @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
*/
int
ice_aq_get_dcb_cfg(struct ice_hw *hw, u8 mib_type, u8 bridgetype,
struct ice_dcbx_cfg *dcbcfg)
{
u8 *lldpmib;
int ret;
/* Allocate the LLDPDU */
lldpmib = devm_kzalloc(ice_hw_to_dev(hw), ICE_LLDPDU_SIZE, GFP_KERNEL);
if (!lldpmib)
return -ENOMEM;
ret = ice_aq_get_lldp_mib(hw, bridgetype, mib_type, (void *)lldpmib,
ICE_LLDPDU_SIZE, NULL, NULL, NULL);
if (!ret)
/* Parse LLDP MIB to get DCB configuration */
ret = ice_lldp_to_dcb_cfg(lldpmib, dcbcfg);
devm_kfree(ice_hw_to_dev(hw), lldpmib);
return ret;
}
/**
* ice_aq_start_stop_dcbx - Start/Stop DCBX service in FW
* @hw: pointer to the HW struct
* @start_dcbx_agent: True if DCBX Agent needs to be started
* False if DCBX Agent needs to be stopped
* @dcbx_agent_status: FW indicates back the DCBX agent status
* True if DCBX Agent is active
* False if DCBX Agent is stopped
* @cd: pointer to command details structure or NULL
*
* Start/Stop the embedded dcbx Agent. In case that this wrapper function
* returns 0, caller will need to check if FW returns back the same
* value as stated in dcbx_agent_status, and react accordingly. (0x0A09)
*/
int
ice_aq_start_stop_dcbx(struct ice_hw *hw, bool start_dcbx_agent,
bool *dcbx_agent_status, struct ice_sq_cd *cd)
{
struct ice_aqc_lldp_stop_start_specific_agent *cmd;
struct ice_aq_desc desc;
u16 opcode;
int status;
cmd = &desc.params.lldp_agent_ctrl;
opcode = ice_aqc_opc_lldp_stop_start_specific_agent;
ice_fill_dflt_direct_cmd_desc(&desc, opcode);
if (start_dcbx_agent)
cmd->command = ICE_AQC_START_STOP_AGENT_START_DCBX;
status = ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
*dcbx_agent_status = false;
if (!status &&
cmd->command == ICE_AQC_START_STOP_AGENT_START_DCBX)
*dcbx_agent_status = true;
return status;
}
/**
* ice_aq_get_cee_dcb_cfg
* @hw: pointer to the HW struct
* @buff: response buffer that stores CEE operational configuration
* @cd: pointer to command details structure or NULL
*
* Get CEE DCBX mode operational configuration from firmware (0x0A07)
*/
static int
ice_aq_get_cee_dcb_cfg(struct ice_hw *hw,
struct ice_aqc_get_cee_dcb_cfg_resp *buff,
struct ice_sq_cd *cd)
{
struct ice_aq_desc desc;
ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_get_cee_dcb_cfg);
return ice_aq_send_cmd(hw, &desc, (void *)buff, sizeof(*buff), cd);
}
/**
* ice_aq_set_pfc_mode - Set PFC mode
* @hw: pointer to the HW struct
* @pfc_mode: value of PFC mode to set
* @cd: pointer to command details structure or NULL
*
* This AQ call configures the PFC mode to DSCP-based PFC mode or
* VLAN-based PFC (0x0303)
*/
int ice_aq_set_pfc_mode(struct ice_hw *hw, u8 pfc_mode, struct ice_sq_cd *cd)
{
struct ice_aqc_set_query_pfc_mode *cmd;
struct ice_aq_desc desc;
int status;
if (pfc_mode > ICE_AQC_PFC_DSCP_BASED_PFC)
return -EINVAL;
cmd = &desc.params.set_query_pfc_mode;
ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_set_pfc_mode);
cmd->pfc_mode = pfc_mode;
status = ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
if (status)
return status;
/* FW will write the PFC mode set back into cmd->pfc_mode, but if DCB is
* disabled, FW will write back 0 to cmd->pfc_mode. After the AQ has
* been executed, check if cmd->pfc_mode is what was requested. If not,
* return an error.
*/
if (cmd->pfc_mode != pfc_mode)
return -EOPNOTSUPP;
return 0;
}
/**
* ice_cee_to_dcb_cfg
* @cee_cfg: pointer to CEE configuration struct
* @pi: port information structure
*
* Convert CEE configuration from firmware to DCB configuration
*/
static void
ice_cee_to_dcb_cfg(struct ice_aqc_get_cee_dcb_cfg_resp *cee_cfg,
struct ice_port_info *pi)
{
u32 status, tlv_status = le32_to_cpu(cee_cfg->tlv_status);
u32 ice_aqc_cee_status_mask, ice_aqc_cee_status_shift, j;
u8 i, err, sync, oper, app_index, ice_app_sel_type;
u16 app_prio = le16_to_cpu(cee_cfg->oper_app_prio);
u16 ice_aqc_cee_app_mask, ice_aqc_cee_app_shift;
struct ice_dcbx_cfg *cmp_dcbcfg, *dcbcfg;
u16 ice_app_prot_id_type;
dcbcfg = &pi->qos_cfg.local_dcbx_cfg;
dcbcfg->dcbx_mode = ICE_DCBX_MODE_CEE;
dcbcfg->tlv_status = tlv_status;
/* CEE PG data */
dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc;
/* Note that the FW creates the oper_prio_tc nibbles reversed
* from those in the CEE Priority Group sub-TLV.
*/
for (i = 0; i < ICE_MAX_TRAFFIC_CLASS / 2; i++) {
dcbcfg->etscfg.prio_table[i * 2] =
FIELD_GET(ICE_CEE_PGID_PRIO_0_M,
cee_cfg->oper_prio_tc[i]);
dcbcfg->etscfg.prio_table[i * 2 + 1] =
FIELD_GET(ICE_CEE_PGID_PRIO_1_M,
cee_cfg->oper_prio_tc[i]);
}
ice_for_each_traffic_class(i) {
dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i];
if (dcbcfg->etscfg.prio_table[i] == ICE_CEE_PGID_STRICT) {
/* Map it to next empty TC */
dcbcfg->etscfg.prio_table[i] = cee_cfg->oper_num_tc - 1;
dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_STRICT;
} else {
dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_ETS;
}
}
/* CEE PFC data */
dcbcfg->pfc.pfcena = cee_cfg->oper_pfc_en;
dcbcfg->pfc.pfccap = ICE_MAX_TRAFFIC_CLASS;
/* CEE APP TLV data */
if (dcbcfg->app_mode == ICE_DCBX_APPS_NON_WILLING)
cmp_dcbcfg = &pi->qos_cfg.desired_dcbx_cfg;
else
cmp_dcbcfg = &pi->qos_cfg.remote_dcbx_cfg;
app_index = 0;
for (i = 0; i < 3; i++) {
if (i == 0) {
/* FCoE APP */
ice_aqc_cee_status_mask = ICE_AQC_CEE_FCOE_STATUS_M;
ice_aqc_cee_status_shift = ICE_AQC_CEE_FCOE_STATUS_S;
ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_FCOE_M;
ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_FCOE_S;
ice_app_sel_type = ICE_APP_SEL_ETHTYPE;
ice_app_prot_id_type = ETH_P_FCOE;
} else if (i == 1) {
/* iSCSI APP */
ice_aqc_cee_status_mask = ICE_AQC_CEE_ISCSI_STATUS_M;
ice_aqc_cee_status_shift = ICE_AQC_CEE_ISCSI_STATUS_S;
ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_ISCSI_M;
ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_ISCSI_S;
ice_app_sel_type = ICE_APP_SEL_TCPIP;
ice_app_prot_id_type = ISCSI_LISTEN_PORT;
for (j = 0; j < cmp_dcbcfg->numapps; j++) {
u16 prot_id = cmp_dcbcfg->app[j].prot_id;
u8 sel = cmp_dcbcfg->app[j].selector;
if (sel == ICE_APP_SEL_TCPIP &&
(prot_id == ISCSI_LISTEN_PORT ||
prot_id == ICE_APP_PROT_ID_ISCSI_860)) {
ice_app_prot_id_type = prot_id;
break;
}
}
} else {
/* FIP APP */
ice_aqc_cee_status_mask = ICE_AQC_CEE_FIP_STATUS_M;
ice_aqc_cee_status_shift = ICE_AQC_CEE_FIP_STATUS_S;
ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_FIP_M;
ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_FIP_S;
ice_app_sel_type = ICE_APP_SEL_ETHTYPE;
ice_app_prot_id_type = ETH_P_FIP;
}
status = (tlv_status & ice_aqc_cee_status_mask) >>
ice_aqc_cee_status_shift;
err = (status & ICE_TLV_STATUS_ERR) ? 1 : 0;
sync = (status & ICE_TLV_STATUS_SYNC) ? 1 : 0;
oper = (status & ICE_TLV_STATUS_OPER) ? 1 : 0;
/* Add FCoE/iSCSI/FIP APP if Error is False and
* Oper/Sync is True
*/
if (!err && sync && oper) {
dcbcfg->app[app_index].priority =
(app_prio & ice_aqc_cee_app_mask) >>
ice_aqc_cee_app_shift;
dcbcfg->app[app_index].selector = ice_app_sel_type;
dcbcfg->app[app_index].prot_id = ice_app_prot_id_type;
app_index++;
}
}
dcbcfg->numapps = app_index;
}
/**
* ice_get_ieee_or_cee_dcb_cfg
* @pi: port information structure
* @dcbx_mode: mode of DCBX (IEEE or CEE)
*
* Get IEEE or CEE mode DCB configuration from the Firmware
*/
static int ice_get_ieee_or_cee_dcb_cfg(struct ice_port_info *pi, u8 dcbx_mode)
{
struct ice_dcbx_cfg *dcbx_cfg = NULL;
int ret;
if (!pi)
return -EINVAL;
if (dcbx_mode == ICE_DCBX_MODE_IEEE)
dcbx_cfg = &pi->qos_cfg.local_dcbx_cfg;
else if (dcbx_mode == ICE_DCBX_MODE_CEE)
dcbx_cfg = &pi->qos_cfg.desired_dcbx_cfg;
/* Get Local DCB Config in case of ICE_DCBX_MODE_IEEE
* or get CEE DCB Desired Config in case of ICE_DCBX_MODE_CEE
*/
ret = ice_aq_get_dcb_cfg(pi->hw, ICE_AQ_LLDP_MIB_LOCAL,
ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID, dcbx_cfg);
if (ret)
goto out;
/* Get Remote DCB Config */
dcbx_cfg = &pi->qos_cfg.remote_dcbx_cfg;
ret = ice_aq_get_dcb_cfg(pi->hw, ICE_AQ_LLDP_MIB_REMOTE,
ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID, dcbx_cfg);
/* Don't treat ENOENT as an error for Remote MIBs */
if (pi->hw->adminq.sq_last_status == ICE_AQ_RC_ENOENT)
ret = 0;
out:
return ret;
}
/**
* ice_get_dcb_cfg
* @pi: port information structure
*
* Get DCB configuration from the Firmware
*/
int ice_get_dcb_cfg(struct ice_port_info *pi)
{
struct ice_aqc_get_cee_dcb_cfg_resp cee_cfg;
struct ice_dcbx_cfg *dcbx_cfg;
int ret;
if (!pi)
return -EINVAL;
ret = ice_aq_get_cee_dcb_cfg(pi->hw, &cee_cfg, NULL);
if (!ret) {
/* CEE mode */
ret = ice_get_ieee_or_cee_dcb_cfg(pi, ICE_DCBX_MODE_CEE);
ice_cee_to_dcb_cfg(&cee_cfg, pi);
} else if (pi->hw->adminq.sq_last_status == ICE_AQ_RC_ENOENT) {
/* CEE mode not enabled try querying IEEE data */
dcbx_cfg = &pi->qos_cfg.local_dcbx_cfg;
dcbx_cfg->dcbx_mode = ICE_DCBX_MODE_IEEE;
ret = ice_get_ieee_or_cee_dcb_cfg(pi, ICE_DCBX_MODE_IEEE);
}
return ret;
}
/**
* ice_get_dcb_cfg_from_mib_change
* @pi: port information structure
* @event: pointer to the admin queue receive event
*
* Set DCB configuration from received MIB Change event
*/
void ice_get_dcb_cfg_from_mib_change(struct ice_port_info *pi,
struct ice_rq_event_info *event)
{
struct ice_dcbx_cfg *dcbx_cfg = &pi->qos_cfg.local_dcbx_cfg;
struct ice_aqc_lldp_get_mib *mib;
u8 change_type, dcbx_mode;
mib = (struct ice_aqc_lldp_get_mib *)&event->desc.params.raw;
change_type = FIELD_GET(ICE_AQ_LLDP_MIB_TYPE_M, mib->type);
if (change_type == ICE_AQ_LLDP_MIB_REMOTE)
dcbx_cfg = &pi->qos_cfg.remote_dcbx_cfg;
dcbx_mode = FIELD_GET(ICE_AQ_LLDP_DCBX_M, mib->type);
switch (dcbx_mode) {
case ICE_AQ_LLDP_DCBX_IEEE:
dcbx_cfg->dcbx_mode = ICE_DCBX_MODE_IEEE;
ice_lldp_to_dcb_cfg(event->msg_buf, dcbx_cfg);
break;
case ICE_AQ_LLDP_DCBX_CEE:
pi->qos_cfg.desired_dcbx_cfg = pi->qos_cfg.local_dcbx_cfg;
ice_cee_to_dcb_cfg((struct ice_aqc_get_cee_dcb_cfg_resp *)
event->msg_buf, pi);
break;
}
}
/**
* ice_init_dcb
* @hw: pointer to the HW struct
* @enable_mib_change: enable MIB change event
*
* Update DCB configuration from the Firmware
*/
int ice_init_dcb(struct ice_hw *hw, bool enable_mib_change)
{
struct ice_qos_cfg *qos_cfg = &hw->port_info->qos_cfg;
int ret = 0;
if (!hw->func_caps.common_cap.dcb)
return -EOPNOTSUPP;
qos_cfg->is_sw_lldp = true;
/* Get DCBX status */
qos_cfg->dcbx_status = ice_get_dcbx_status(hw);
if (qos_cfg->dcbx_status == ICE_DCBX_STATUS_DONE ||
qos_cfg->dcbx_status == ICE_DCBX_STATUS_IN_PROGRESS ||
qos_cfg->dcbx_status == ICE_DCBX_STATUS_NOT_STARTED) {
/* Get current DCBX configuration */
ret = ice_get_dcb_cfg(hw->port_info);
if (ret)
return ret;
qos_cfg->is_sw_lldp = false;
} else if (qos_cfg->dcbx_status == ICE_DCBX_STATUS_DIS) {
return -EBUSY;
}
/* Configure the LLDP MIB change event */
if (enable_mib_change) {
ret = ice_aq_cfg_lldp_mib_change(hw, true, NULL);
if (ret)
qos_cfg->is_sw_lldp = true;
}
return ret;
}
/**
* ice_cfg_lldp_mib_change
* @hw: pointer to the HW struct
* @ena_mib: enable/disable MIB change event
*
* Configure (disable/enable) MIB
*/
int ice_cfg_lldp_mib_change(struct ice_hw *hw, bool ena_mib)
{
struct ice_qos_cfg *qos_cfg = &hw->port_info->qos_cfg;
int ret;
if (!hw->func_caps.common_cap.dcb)
return -EOPNOTSUPP;
/* Get DCBX status */
qos_cfg->dcbx_status = ice_get_dcbx_status(hw);
if (qos_cfg->dcbx_status == ICE_DCBX_STATUS_DIS)
return -EBUSY;
ret = ice_aq_cfg_lldp_mib_change(hw, ena_mib, NULL);
if (!ret)
qos_cfg->is_sw_lldp = !ena_mib;
return ret;
}
/**
* ice_add_ieee_ets_common_tlv
* @buf: Data buffer to be populated with ice_dcb_ets_cfg data
* @ets_cfg: Container for ice_dcb_ets_cfg data
*
* Populate the TLV buffer with ice_dcb_ets_cfg data
*/
static void
ice_add_ieee_ets_common_tlv(u8 *buf, struct ice_dcb_ets_cfg *ets_cfg)
{
u8 priority0, priority1;
u8 offset = 0;
int i;
/* 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 < ICE_MAX_TRAFFIC_CLASS / 2; i++) {
priority0 = ets_cfg->prio_table[i * 2] & 0xF;
priority1 = ets_cfg->prio_table[i * 2 + 1] & 0xF;
buf[offset] = (priority0 << ICE_IEEE_ETS_PRIO_1_S) | priority1;
offset++;
}
/* TC Bandwidth Table (8 octets)
* Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
* ---------------------------------
* |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
* ---------------------------------
*
* TSA Assignment Table (8 octets)
* Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
* ---------------------------------
* |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
* ---------------------------------
*/
ice_for_each_traffic_class(i) {
buf[offset] = ets_cfg->tcbwtable[i];
buf[ICE_MAX_TRAFFIC_CLASS + offset] = ets_cfg->tsatable[i];
offset++;
}
}
/**
* ice_add_ieee_ets_tlv - Prepare ETS TLV in IEEE format
* @tlv: Fill the ETS config data in IEEE format
* @dcbcfg: Local store which holds the DCB Config
*
* Prepare IEEE 802.1Qaz ETS CFG TLV
*/
static void
ice_add_ieee_ets_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
{
struct ice_dcb_ets_cfg *etscfg;
u8 *buf = tlv->tlvinfo;
u8 maxtcwilling = 0;
u32 ouisubtype;
u16 typelen;
typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
ICE_IEEE_ETS_TLV_LEN);
tlv->typelen = htons(typelen);
ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
ICE_IEEE_SUBTYPE_ETS_CFG);
tlv->ouisubtype = htonl(ouisubtype);
/* First Octet post subtype
* --------------------------
* |will-|CBS | Re- | Max |
* |ing | |served| TCs |
* --------------------------
* |1bit | 1bit|3 bits|3bits|
*/
etscfg = &dcbcfg->etscfg;
if (etscfg->willing)
maxtcwilling = BIT(ICE_IEEE_ETS_WILLING_S);
maxtcwilling |= etscfg->maxtcs & ICE_IEEE_ETS_MAXTC_M;
buf[0] = maxtcwilling;
/* Begin adding at Priority Assignment Table (offset 1 in buf) */
ice_add_ieee_ets_common_tlv(&buf[1], etscfg);
}
/**
* ice_add_ieee_etsrec_tlv - Prepare ETS Recommended TLV in IEEE format
* @tlv: Fill ETS Recommended TLV in IEEE format
* @dcbcfg: Local store which holds the DCB Config
*
* Prepare IEEE 802.1Qaz ETS REC TLV
*/
static void
ice_add_ieee_etsrec_tlv(struct ice_lldp_org_tlv *tlv,
struct ice_dcbx_cfg *dcbcfg)
{
struct ice_dcb_ets_cfg *etsrec;
u8 *buf = tlv->tlvinfo;
u32 ouisubtype;
u16 typelen;
typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
ICE_IEEE_ETS_TLV_LEN);
tlv->typelen = htons(typelen);
ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
ICE_IEEE_SUBTYPE_ETS_REC);
tlv->ouisubtype = htonl(ouisubtype);
etsrec = &dcbcfg->etsrec;
/* First Octet is reserved */
/* Begin adding at Priority Assignment Table (offset 1 in buf) */
ice_add_ieee_ets_common_tlv(&buf[1], etsrec);
}
/**
* ice_add_ieee_pfc_tlv - Prepare PFC TLV in IEEE format
* @tlv: Fill PFC TLV in IEEE format
* @dcbcfg: Local store which holds the PFC CFG data
*
* Prepare IEEE 802.1Qaz PFC CFG TLV
*/
static void
ice_add_ieee_pfc_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
{
u8 *buf = tlv->tlvinfo;
u32 ouisubtype;
u16 typelen;
typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
ICE_IEEE_PFC_TLV_LEN);
tlv->typelen = htons(typelen);
ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
ICE_IEEE_SUBTYPE_PFC_CFG);
tlv->ouisubtype = htonl(ouisubtype);
/* ----------------------------------------
* |will-|MBC | Re- | PFC | PFC Enable |
* |ing | |served| cap | |
* -----------------------------------------
* |1bit | 1bit|2 bits|4bits| 1 octet |
*/
if (dcbcfg->pfc.willing)
buf[0] = BIT(ICE_IEEE_PFC_WILLING_S);
if (dcbcfg->pfc.mbc)
buf[0] |= BIT(ICE_IEEE_PFC_MBC_S);
buf[0] |= dcbcfg->pfc.pfccap & 0xF;
buf[1] = dcbcfg->pfc.pfcena;
}
/**
* ice_add_ieee_app_pri_tlv - Prepare APP TLV in IEEE format
* @tlv: Fill APP TLV in IEEE format
* @dcbcfg: Local store which holds the APP CFG data
*
* Prepare IEEE 802.1Qaz APP CFG TLV
*/
static void
ice_add_ieee_app_pri_tlv(struct ice_lldp_org_tlv *tlv,
struct ice_dcbx_cfg *dcbcfg)
{
u16 typelen, len, offset = 0;
u8 priority, selector, i = 0;
u8 *buf = tlv->tlvinfo;
u32 ouisubtype;
/* No APP TLVs then just return */
if (dcbcfg->numapps == 0)
return;
ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
ICE_IEEE_SUBTYPE_APP_PRI);
tlv->ouisubtype = htonl(ouisubtype);
/* 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 (i < dcbcfg->numapps) {
priority = dcbcfg->app[i].priority & 0x7;
selector = dcbcfg->app[i].selector & 0x7;
buf[offset] = (priority << ICE_IEEE_APP_PRIO_S) | selector;
buf[offset + 1] = (dcbcfg->app[i].prot_id >> 0x8) & 0xFF;
buf[offset + 2] = dcbcfg->app[i].prot_id & 0xFF;
/* Move to next app */
offset += 3;
i++;
if (i >= ICE_DCBX_MAX_APPS)
break;
}
/* len includes size of ouisubtype + 1 reserved + 3*numapps */
len = sizeof(tlv->ouisubtype) + 1 + (i * 3);
typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | (len & 0x1FF));
tlv->typelen = htons(typelen);
}
/**
* ice_add_dscp_up_tlv - Prepare DSCP to UP TLV
* @tlv: location to build the TLV data
* @dcbcfg: location of data to convert to TLV
*/
static void
ice_add_dscp_up_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
{
u8 *buf = tlv->tlvinfo;
u32 ouisubtype;
u16 typelen;
int i;
typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
ICE_DSCP_UP_TLV_LEN);
tlv->typelen = htons(typelen);
ouisubtype = (u32)((ICE_DSCP_OUI << ICE_LLDP_TLV_OUI_S) |
ICE_DSCP_SUBTYPE_DSCP2UP);
tlv->ouisubtype = htonl(ouisubtype);
/* bytes 0 - 63 - IPv4 DSCP2UP LUT */
for (i = 0; i < ICE_DSCP_NUM_VAL; i++) {
/* IPv4 mapping */
buf[i] = dcbcfg->dscp_map[i];
/* IPv6 mapping */
buf[i + ICE_DSCP_IPV6_OFFSET] = dcbcfg->dscp_map[i];
}
/* byte 64 - IPv4 untagged traffic */
buf[i] = 0;
/* byte 144 - IPv6 untagged traffic */
buf[i + ICE_DSCP_IPV6_OFFSET] = 0;
}
#define ICE_BYTES_PER_TC 8
/**
* ice_add_dscp_enf_tlv - Prepare DSCP Enforcement TLV
* @tlv: location to build the TLV data
*/
static void
ice_add_dscp_enf_tlv(struct ice_lldp_org_tlv *tlv)
{
u8 *buf = tlv->tlvinfo;
u32 ouisubtype;
u16 typelen;
typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
ICE_DSCP_ENF_TLV_LEN);
tlv->typelen = htons(typelen);
ouisubtype = (u32)((ICE_DSCP_OUI << ICE_LLDP_TLV_OUI_S) |
ICE_DSCP_SUBTYPE_ENFORCE);
tlv->ouisubtype = htonl(ouisubtype);
/* Allow all DSCP values to be valid for all TC's (IPv4 and IPv6) */
memset(buf, 0, 2 * (ICE_MAX_TRAFFIC_CLASS * ICE_BYTES_PER_TC));
}
/**
* ice_add_dscp_tc_bw_tlv - Prepare DSCP BW for TC TLV
* @tlv: location to build the TLV data
* @dcbcfg: location of the data to convert to TLV
*/
static void
ice_add_dscp_tc_bw_tlv(struct ice_lldp_org_tlv *tlv,
struct ice_dcbx_cfg *dcbcfg)
{
struct ice_dcb_ets_cfg *etscfg;
u8 *buf = tlv->tlvinfo;
u32 ouisubtype;
u8 offset = 0;
u16 typelen;
int i;
typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
ICE_DSCP_TC_BW_TLV_LEN);
tlv->typelen = htons(typelen);
ouisubtype = (u32)((ICE_DSCP_OUI << ICE_LLDP_TLV_OUI_S) |
ICE_DSCP_SUBTYPE_TCBW);
tlv->ouisubtype = htonl(ouisubtype);
/* First Octect after subtype
* ----------------------------
* | RSV | CBS | RSV | Max TCs |
* | 1b | 1b | 3b | 3b |
* ----------------------------
*/
etscfg = &dcbcfg->etscfg;
buf[0] = etscfg->maxtcs & ICE_IEEE_ETS_MAXTC_M;
/* bytes 1 - 4 reserved */
offset = 5;
/* TC BW table
* bytes 0 - 7 for TC 0 - 7
*
* TSA Assignment table
* bytes 8 - 15 for TC 0 - 7
*/
for (i = 0; i < ICE_MAX_TRAFFIC_CLASS; i++) {
buf[offset] = etscfg->tcbwtable[i];
buf[offset + ICE_MAX_TRAFFIC_CLASS] = etscfg->tsatable[i];
offset++;
}
}
/**
* ice_add_dscp_pfc_tlv - Prepare DSCP PFC TLV
* @tlv: Fill PFC TLV in IEEE format
* @dcbcfg: Local store which holds the PFC CFG data
*/
static void
ice_add_dscp_pfc_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
{
u8 *buf = tlv->tlvinfo;
u32 ouisubtype;
u16 typelen;
typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
ICE_DSCP_PFC_TLV_LEN);
tlv->typelen = htons(typelen);
ouisubtype = (u32)((ICE_DSCP_OUI << ICE_LLDP_TLV_OUI_S) |
ICE_DSCP_SUBTYPE_PFC);
tlv->ouisubtype = htonl(ouisubtype);
buf[0] = dcbcfg->pfc.pfccap & 0xF;
buf[1] = dcbcfg->pfc.pfcena;
}
/**
* ice_add_dcb_tlv - Add all IEEE or DSCP TLVs
* @tlv: Fill TLV data in IEEE format
* @dcbcfg: Local store which holds the DCB Config
* @tlvid: Type of IEEE TLV
*
* Add tlv information
*/
static void
ice_add_dcb_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg,
u16 tlvid)
{
if (dcbcfg->pfc_mode == ICE_QOS_MODE_VLAN) {
switch (tlvid) {
case ICE_IEEE_TLV_ID_ETS_CFG:
ice_add_ieee_ets_tlv(tlv, dcbcfg);
break;
case ICE_IEEE_TLV_ID_ETS_REC:
ice_add_ieee_etsrec_tlv(tlv, dcbcfg);
break;
case ICE_IEEE_TLV_ID_PFC_CFG:
ice_add_ieee_pfc_tlv(tlv, dcbcfg);
break;
case ICE_IEEE_TLV_ID_APP_PRI:
ice_add_ieee_app_pri_tlv(tlv, dcbcfg);
break;
default:
break;
}
} else {
/* pfc_mode == ICE_QOS_MODE_DSCP */
switch (tlvid) {
case ICE_TLV_ID_DSCP_UP:
ice_add_dscp_up_tlv(tlv, dcbcfg);
break;
case ICE_TLV_ID_DSCP_ENF:
ice_add_dscp_enf_tlv(tlv);
break;
case ICE_TLV_ID_DSCP_TC_BW:
ice_add_dscp_tc_bw_tlv(tlv, dcbcfg);
break;
case ICE_TLV_ID_DSCP_TO_PFC:
ice_add_dscp_pfc_tlv(tlv, dcbcfg);
break;
default:
break;
}
}
}
/**
* ice_dcb_cfg_to_lldp - Convert DCB configuration to MIB format
* @lldpmib: pointer to the HW struct
* @miblen: length of LLDP MIB
* @dcbcfg: Local store which holds the DCB Config
*
* Convert the DCB configuration to MIB format
*/
static void
ice_dcb_cfg_to_lldp(u8 *lldpmib, u16 *miblen, struct ice_dcbx_cfg *dcbcfg)
{
u16 len, offset = 0, tlvid = ICE_TLV_ID_START;
struct ice_lldp_org_tlv *tlv;
u16 typelen;
tlv = (struct ice_lldp_org_tlv *)lldpmib;
while (1) {
ice_add_dcb_tlv(tlv, dcbcfg, tlvid++);
typelen = ntohs(tlv->typelen);
len = FIELD_GET(ICE_LLDP_TLV_LEN_M, typelen);
if (len)
offset += len + 2;
/* END TLV or beyond LLDPDU size */
if (tlvid >= ICE_TLV_ID_END_OF_LLDPPDU ||
offset > ICE_LLDPDU_SIZE)
break;
/* Move to next TLV */
if (len)
tlv = (struct ice_lldp_org_tlv *)
((char *)tlv + sizeof(tlv->typelen) + len);
}
*miblen = offset;
}
/**
* ice_set_dcb_cfg - Set the local LLDP MIB to FW
* @pi: port information structure
*
* Set DCB configuration to the Firmware
*/
int ice_set_dcb_cfg(struct ice_port_info *pi)
{
u8 mib_type, *lldpmib = NULL;
struct ice_dcbx_cfg *dcbcfg;
struct ice_hw *hw;
u16 miblen;
int ret;
if (!pi)
return -EINVAL;
hw = pi->hw;
/* update the HW local config */
dcbcfg = &pi->qos_cfg.local_dcbx_cfg;
/* Allocate the LLDPDU */
lldpmib = devm_kzalloc(ice_hw_to_dev(hw), ICE_LLDPDU_SIZE, GFP_KERNEL);
if (!lldpmib)
return -ENOMEM;
mib_type = SET_LOCAL_MIB_TYPE_LOCAL_MIB;
if (dcbcfg->app_mode == ICE_DCBX_APPS_NON_WILLING)
mib_type |= SET_LOCAL_MIB_TYPE_CEE_NON_WILLING;
ice_dcb_cfg_to_lldp(lldpmib, &miblen, dcbcfg);
ret = ice_aq_set_lldp_mib(hw, mib_type, (void *)lldpmib, miblen,
NULL);
devm_kfree(ice_hw_to_dev(hw), lldpmib);
return ret;
}
/**
* ice_aq_query_port_ets - query port ETS configuration
* @pi: port information structure
* @buf: pointer to buffer
* @buf_size: buffer size in bytes
* @cd: pointer to command details structure or NULL
*
* query current port ETS configuration
*/
static int
ice_aq_query_port_ets(struct ice_port_info *pi,
struct ice_aqc_port_ets_elem *buf, u16 buf_size,
struct ice_sq_cd *cd)
{
struct ice_aqc_query_port_ets *cmd;
struct ice_aq_desc desc;
int status;
if (!pi)
return -EINVAL;
cmd = &desc.params.port_ets;
ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_query_port_ets);
cmd->port_teid = pi->root->info.node_teid;
status = ice_aq_send_cmd(pi->hw, &desc, buf, buf_size, cd);
return status;
}
/**
* ice_update_port_tc_tree_cfg - update TC tree configuration
* @pi: port information structure
* @buf: pointer to buffer
*
* update the SW DB with the new TC changes
*/
static int
ice_update_port_tc_tree_cfg(struct ice_port_info *pi,
struct ice_aqc_port_ets_elem *buf)
{
struct ice_sched_node *node, *tc_node;
struct ice_aqc_txsched_elem_data elem;
u32 teid1, teid2;
int status = 0;
u8 i, j;
if (!pi)
return -EINVAL;
/* suspend the missing TC nodes */
for (i = 0; i < pi->root->num_children; i++) {
teid1 = le32_to_cpu(pi->root->children[i]->info.node_teid);
ice_for_each_traffic_class(j) {
teid2 = le32_to_cpu(buf->tc_node_teid[j]);
if (teid1 == teid2)
break;
}
if (j < ICE_MAX_TRAFFIC_CLASS)
continue;
/* TC is missing */
pi->root->children[i]->in_use = false;
}
/* add the new TC nodes */
ice_for_each_traffic_class(j) {
teid2 = le32_to_cpu(buf->tc_node_teid[j]);
if (teid2 == ICE_INVAL_TEID)
continue;
/* Is it already present in the tree ? */
for (i = 0; i < pi->root->num_children; i++) {
tc_node = pi->root->children[i];
if (!tc_node)
continue;
teid1 = le32_to_cpu(tc_node->info.node_teid);
if (teid1 == teid2) {
tc_node->tc_num = j;
tc_node->in_use = true;
break;
}
}
if (i < pi->root->num_children)
continue;
/* new TC */
status = ice_sched_query_elem(pi->hw, teid2, &elem);
if (!status)
status = ice_sched_add_node(pi, 1, &elem, NULL);
if (status)
break;
/* update the TC number */
node = ice_sched_find_node_by_teid(pi->root, teid2);
if (node)
node->tc_num = j;
}
return status;
}
/**
* ice_query_port_ets - query port ETS configuration
* @pi: port information structure
* @buf: pointer to buffer
* @buf_size: buffer size in bytes
* @cd: pointer to command details structure or NULL
*
* query current port ETS configuration and update the
* SW DB with the TC changes
*/
int
ice_query_port_ets(struct ice_port_info *pi,
struct ice_aqc_port_ets_elem *buf, u16 buf_size,
struct ice_sq_cd *cd)
{
int status;
mutex_lock(&pi->sched_lock);
status = ice_aq_query_port_ets(pi, buf, buf_size, cd);
if (!status)
status = ice_update_port_tc_tree_cfg(pi, buf);
mutex_unlock(&pi->sched_lock);
return status;
}
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