[PATCH 5.11 102/210] ice: Recognize 860 as iSCSI port in CEE mode

Greg Kroah-Hartman
2021-04-12T09:31:09Z

From: Chinh T Cao <chinh.t.cao@intel.com>

[ Upstream commit aeac8ce864d9c0836e12ed5b5cc80f62f3cccb7c ]

iSCSI can use both TCP ports 860 and 3260. However, in our current
implementation, the ice_aqc_opc_get_cee_dcb_cfg (0x0A07) AQ command
doesn't provide a way to communicate the protocol port number to the
AQ's caller. Thus, we assume that 3260 is the iSCSI port number at the
AQ's caller layer.

Rely on the dcbx-willing mode, desired QoS and remote QoS configuration to
determine which port number that iSCSI will use.

Fixes: 0ebd3ff13cca ("ice: Add code for DCB initialization part 2/4")
Signed-off-by: Chinh T Cao <chinh.t.cao@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/intel/ice/ice_dcb.c | 38 +++++++++++++++++------
drivers/net/ethernet/intel/ice/ice_type.h | 1 +
2 files changed, 30 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_dcb.c b/drivers/net/ethernet/intel/ice/ice_dcb.c
index e42727941ef5..211ac6f907ad 100644
--- a/drivers/net/ethernet/intel/ice/ice_dcb.c
+++ b/drivers/net/ethernet/intel/ice/ice_dcb.c
@@ -738,22 +738,27 @@ ice_aq_get_cee_dcb_cfg(struct ice_hw *hw,
/**
* ice_cee_to_dcb_cfg
* @cee_cfg: pointer to CEE configuration struct
- * @dcbcfg: DCB 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_dcbx_cfg *dcbcfg)
+ 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;
+ u8 i, j, err, sync, oper, app_index, ice_app_sel_type;
u16 app_prio = le16_to_cpu(cee_cfg->oper_app_prio);
- u8 i, err, sync, oper, app_index, ice_app_sel_type;
u16 ice_aqc_cee_app_mask, ice_aqc_cee_app_shift;
+ struct ice_dcbx_cfg *cmp_dcbcfg, *dcbcfg;
u16 ice_app_prot_id_type;

- /* CEE PG data to ETS config */
+ 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
@@ -780,10 +785,16 @@ ice_cee_to_dcb_cfg(struct ice_aqc_get_cee_dcb_cfg_resp *cee_cfg,
}
}

- /* CEE PFC data to ETS config */
+ /* 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) {
@@ -802,6 +813,18 @@ ice_cee_to_dcb_cfg(struct ice_aqc_get_cee_dcb_cfg_resp *cee_cfg,
ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_ISCSI_S;
ice_app_sel_type = ICE_APP_SEL_TCPIP;
ice_app_prot_id_type = ICE_APP_PROT_ID_ISCSI;
+
+ 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 == ICE_APP_PROT_ID_ISCSI ||
+ 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;
@@ -892,11 +915,8 @@ enum ice_status ice_get_dcb_cfg(struct ice_port_info *pi)
ret = ice_aq_get_cee_dcb_cfg(pi->hw, &cee_cfg, NULL);
if (!ret) {
/* CEE mode */
- dcbx_cfg = &pi->qos_cfg.local_dcbx_cfg;
- dcbx_cfg->dcbx_mode = ICE_DCBX_MODE_CEE;
- dcbx_cfg->tlv_status = le32_to_cpu(cee_cfg.tlv_status);
- ice_cee_to_dcb_cfg(&cee_cfg, dcbx_cfg);
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;
diff --git a/drivers/net/ethernet/intel/ice/ice_type.h b/drivers/net/ethernet/intel/ice/ice_type.h
index c09c085f637a..1bed183d96a0 100644
--- a/drivers/net/ethernet/intel/ice/ice_type.h
+++ b/drivers/net/ethernet/intel/ice/ice_type.h
@@ -493,6 +493,7 @@ struct ice_dcb_app_priority_table {
#define ICE_TLV_STATUS_ERR 0x4
#define ICE_APP_PROT_ID_FCOE 0x8906
#define ICE_APP_PROT_ID_ISCSI 0x0cbc
+#define ICE_APP_PROT_ID_ISCSI_860 0x035c
#define ICE_APP_PROT_ID_FIP 0x8914
#define ICE_APP_SEL_ETHTYPE 0x1
#define ICE_APP_SEL_TCPIP 0x2
--
2.30.2