net/sfc: support main MAC address change

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andrew Lee <alee@solarflare.com>
Reviewed-by: Robert Stonehouse <rstonehouse@solarflare.com>

diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
index aa02f73..eee9072 100644 (file)
--- a/drivers/net/sfc/sfc_ethdev.c
+++ b/drivers/net/sfc/sfc_ethdev.c
@@ -705,6 +705,58 @@ fail_inval:
        SFC_ASSERT(rc > 0);
        return -rc;
 }
+static void
+sfc_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
+{
+       struct sfc_adapter *sa = dev->data->dev_private;
+       const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
+       int rc;
+
+       sfc_adapter_lock(sa);
+
+       if (sa->state != SFC_ADAPTER_STARTED) {
+               sfc_info(sa, "the port is not started");
+               sfc_info(sa, "the new MAC address will be set on port start");
+
+               goto unlock;
+       }
+
+       if (encp->enc_allow_set_mac_with_installed_filters) {
+               rc = efx_mac_addr_set(sa->nic, mac_addr->addr_bytes);
+               if (rc != 0) {
+                       sfc_err(sa, "cannot set MAC address (rc = %u)", rc);
+                       goto unlock;
+               }
+
+               /*
+                * Changing the MAC address by means of MCDI request
+                * has no effect on received traffic, therefore
+                * we also need to update unicast filters
+                */
+               rc = sfc_set_rx_mode(sa);
+               if (rc != 0)
+                       sfc_err(sa, "cannot set filter (rc = %u)", rc);
+       } else {
+               sfc_warn(sa, "cannot set MAC address with filters installed");
+               sfc_warn(sa, "adapter will be restarted to pick the new MAC");
+               sfc_warn(sa, "(some traffic may be dropped)");
+
+               /*
+                * Since setting MAC address with filters installed is not
+                * allowed on the adapter, one needs to simply restart adapter
+                * so that the new MAC address will be taken from an outer
+                * storage and set flawlessly by means of sfc_start() call
+                */
+               sfc_stop(sa);
+               rc = sfc_start(sa);
+               if (rc != 0)
+                       sfc_err(sa, "cannot restart adapter (rc = %u)", rc);
+       }
+
+unlock:
+       sfc_adapter_unlock(sa);
+}
+
 
 static const struct eth_dev_ops sfc_eth_dev_ops = {
        .dev_configure                  = sfc_dev_configure,
@@ -729,6 +781,7 @@ static const struct eth_dev_ops sfc_eth_dev_ops = {
        .tx_queue_release               = sfc_tx_queue_release,
        .flow_ctrl_get                  = sfc_flow_ctrl_get,
        .flow_ctrl_set                  = sfc_flow_ctrl_set,
+       .mac_addr_set                   = sfc_mac_addr_set,
 };
 
 static int