ice: Add code to process LLDP MIB change events

This patch adds support to process LLDP MIB change notifications sent
by the firmware.

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, 36 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_dcb_lib.c b/drivers/net/ethernet/intel/ice/ice_dcb_lib.c
index c52bd5bb37c2..6bbca2c99dbd 100644
--- a/drivers/net/ethernet/intel/ice/ice_dcb_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_dcb_lib.c
@@ -320,3 +320,39 @@ dcb_init_err:
         dev_err(dev, "DCB init failed\n");
         return err;
 }
+
+/**
+ * ice_dcb_process_lldp_set_mib_change - Process MIB change
+ * @pf: ptr to ice_pf
+ * @event: pointer to the admin queue receive event
+ */
+void
+ice_dcb_process_lldp_set_mib_change(struct ice_pf *pf,
+                                    struct ice_rq_event_info *event)
+{
+        if (pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED) {
+                struct ice_dcbx_cfg *dcbcfg, *prev_cfg;
+                int err;
+
+                prev_cfg = &pf->hw.port_info->local_dcbx_cfg;
+                dcbcfg = devm_kmemdup(&pf->pdev->dev, prev_cfg,
+                                      sizeof(*dcbcfg), GFP_KERNEL);
+                if (!dcbcfg)
+                        return;
+
+                err = ice_lldp_to_dcb_cfg(event->msg_buf, dcbcfg);
+                if (!err)
+                        ice_pf_dcb_cfg(pf, dcbcfg);
+
+                devm_kfree(&pf->pdev->dev, dcbcfg);
+
+                /* Get updated DCBx data from firmware */
+                err = ice_get_dcb_cfg(pf->hw.port_info);
+                if (err)
+                        dev_err(&pf->pdev->dev,
+                                "Failed to get DCB config\n");
+        } else {
+                dev_dbg(&pf->pdev->dev,
+                        "MIB Change Event in HOST mode\n");
+        }
+}