ice: Add code for DCB initialization part 1/4

This patch introduces a skeleton for ice_init_pf_dcb, the top level
function for DCB initialization. Subsequent patches will add to this
DCB init flow.

In this patch, ice_init_pf_dcb checks if DCB is a supported capability.
If so, an admin queue call to start the LLDP and DCBx in firmware is
issued. If not, an error is reported. Note that we don't fail the driver
init if DCB init fails.

Reviewed-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
index 757848f85072..4809e5ac55f4 100644
--- a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
+++ b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
@@ -1132,6 +1132,27 @@ struct ice_aqc_pf_vf_msg {
         __le32 addr_low;
 };
 
+/* Start LLDP (direct 0x0A06) */
+struct ice_aqc_lldp_start {
+        u8 command;
+#define ICE_AQ_LLDP_AGENT_START         BIT(0)
+#define ICE_AQ_LLDP_AGENT_PERSIST_ENA   BIT(1)
+        u8 reserved[15];
+};
+
+/* Stop/Start LLDP Agent (direct 0x0A09)
+ * Used for stopping/starting specific LLDP agent. e.g. DCBx.
+ * The same structure is used for the response, with the command field
+ * being used as the status field.
+ */
+struct ice_aqc_lldp_stop_start_specific_agent {
+        u8 command;
+#define ICE_AQC_START_STOP_AGENT_M              BIT(0)
+#define ICE_AQC_START_STOP_AGENT_STOP_DCBX      0
+#define ICE_AQC_START_STOP_AGENT_START_DCBX     ICE_AQC_START_STOP_AGENT_M
+        u8 reserved[15];
+};
+
 /* Get/Set RSS key (indirect 0x0B04/0x0B02) */
 struct ice_aqc_get_set_rss_key {
 #define ICE_AQC_GSET_RSS_KEY_VSI_VALID  BIT(15)
@@ -1390,6 +1411,8 @@ struct ice_aq_desc {
                 struct ice_aqc_query_txsched_res query_sched_res;
                 struct ice_aqc_nvm nvm;
                 struct ice_aqc_pf_vf_msg virt;
+                struct ice_aqc_lldp_start lldp_start;
+                struct ice_aqc_lldp_stop_start_specific_agent lldp_agent_ctrl;
                 struct ice_aqc_get_set_rss_lut get_set_rss_lut;
                 struct ice_aqc_get_set_rss_key get_set_rss_key;
                 struct ice_aqc_add_txqs add_txqs;
@@ -1491,6 +1514,9 @@ enum ice_adminq_opc {
         /* PF/VF mailbox commands */
         ice_mbx_opc_send_msg_to_pf                      = 0x0801,
         ice_mbx_opc_send_msg_to_vf                      = 0x0802,
+        /* LLDP commands */
+        ice_aqc_opc_lldp_start                          = 0x0A06,
+        ice_aqc_opc_lldp_stop_start_specific_agent      = 0x0A09,
 
         /* RSS commands */
         ice_aqc_opc_set_rss_key                         = 0x0B02,