net/failsafe: support multicast address list set

Signed-off-by: Evgeny Im <evgeny.im@oktetlabs.com>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Acked-by: Gaetan Rivet <gaetan.rivet@6wind.com>

doc/guides/nics/features/failsafe.ini

@@ -15,6 +15,7 @@ Jumbo frame          = Y
 Promiscuous mode     = Y
 Allmulticast mode    = Y
 Unicast MAC filter   = Y
+Multicast MAC filter = Y
 VLAN filter          = Y
 Flow control         = Y
 Flow API             = Y

doc/guides/rel_notes/release_18_11.rst

@@ -79,6 +79,7 @@ New Features
   * Support for Rx and Tx queues start and stop.
   * Support for Rx and Tx queues deferred start.
   * Support for runtime Rx and Tx queues setup.
+  * Support multicast MAC address set.
 
 * **Added ability to switch queue deferred start flag on testpmd app.**
 

drivers/net/failsafe/failsafe.c

@@ -304,6 +304,7 @@ fs_rte_eth_free(const char *name)
 	ret = pthread_mutex_destroy(&PRIV(dev)->hotplug_mutex);
 	if (ret)
 		ERROR("Error while destroying hotplug mutex");
+	rte_free(PRIV(dev)->mcast_addrs);
 	rte_free(PRIV(dev));
 	rte_eth_dev_release_port(dev);
 	return ret;

drivers/net/failsafe/failsafe_ether.c

@@ -179,6 +179,23 @@ fs_eth_dev_conf_apply(struct rte_eth_dev *dev,
 			return ret;
 		}
 	}
+	/*
+	 * Propagate multicast MAC addresses to sub-devices,
+	 * if non zero number of addresses is set.
+	 * The condition is required to avoid breakage of failsafe
+	 * for sub-devices which do not support the operation
+	 * if the feature is really not used.
+	 */
+	if (PRIV(dev)->nb_mcast_addr > 0) {
+		DEBUG("Configuring multicast MAC addresses");
+		ret = rte_eth_dev_set_mc_addr_list(PORT_ID(sdev),
+						   PRIV(dev)->mcast_addrs,
+						   PRIV(dev)->nb_mcast_addr);
+		if (ret) {
+			ERROR("Failed to apply multicast MAC addresses");
+			return ret;
+		}
+	}
 	/* VLAN filter */
 	vfc1 = &dev->data->vlan_filter_conf;
 	vfc2 = &edev->data->vlan_filter_conf;

drivers/net/failsafe/failsafe_ops.c

@@ -1126,6 +1126,55 @@ fs_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
 	return 0;
 }
 
+static int
+fs_set_mc_addr_list(struct rte_eth_dev *dev,
+		    struct ether_addr *mc_addr_set, uint32_t nb_mc_addr)
+{
+	struct sub_device *sdev;
+	uint8_t i;
+	int ret;
+	void *mcast_addrs;
+
+	fs_lock(dev, 0);
+
+	FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
+		ret = rte_eth_dev_set_mc_addr_list(PORT_ID(sdev),
+						   mc_addr_set, nb_mc_addr);
+		if (ret != 0) {
+			ERROR("Operation rte_eth_dev_set_mc_addr_list failed for sub_device %d with error %d",
+			      i, ret);
+			goto rollback;
+		}
+	}
+
+	mcast_addrs = rte_realloc(PRIV(dev)->mcast_addrs,
+		nb_mc_addr * sizeof(PRIV(dev)->mcast_addrs[0]), 0);
+	if (mcast_addrs == NULL && nb_mc_addr > 0) {
+		ret = -ENOMEM;
+		goto rollback;
+	}
+	rte_memcpy(mcast_addrs, mc_addr_set,
+		   nb_mc_addr * sizeof(PRIV(dev)->mcast_addrs[0]));
+	PRIV(dev)->nb_mcast_addr = nb_mc_addr;
+	PRIV(dev)->mcast_addrs = mcast_addrs;
+
+	fs_unlock(dev, 0);
+	return 0;
+
+rollback:
+	FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
+		int rc = rte_eth_dev_set_mc_addr_list(PORT_ID(sdev),
+			PRIV(dev)->mcast_addrs,	PRIV(dev)->nb_mcast_addr);
+		if (rc != 0) {
+			ERROR("Multicast MAC address list rollback for sub_device %d failed with error %d",
+			      i, rc);
+		}
+	}
+
+	fs_unlock(dev, 0);
+	return ret;
+}
+
 static int
 fs_rss_hash_update(struct rte_eth_dev *dev,
 			struct rte_eth_rss_conf *rss_conf)
@@ -1214,6 +1263,7 @@ const struct eth_dev_ops failsafe_ops = {
 	.mac_addr_remove = fs_mac_addr_remove,
 	.mac_addr_add = fs_mac_addr_add,
 	.mac_addr_set = fs_mac_addr_set,
+	.set_mc_addr_list = fs_set_mc_addr_list,
 	.rss_hash_update = fs_rss_hash_update,
 	.filter_ctrl = fs_filter_ctrl,
 };

drivers/net/failsafe/failsafe_private.h

@@ -143,6 +143,8 @@ struct fs_priv {
 	uint32_t nb_mac_addr;
 	struct ether_addr mac_addrs[FAILSAFE_MAX_ETHADDR];
 	uint32_t mac_addr_pool[FAILSAFE_MAX_ETHADDR];
+	uint32_t nb_mcast_addr;
+	struct ether_addr *mcast_addrs;
 	/* current capabilities */
 	struct rte_eth_dev_info infos;
 	struct rte_eth_dev_owner my_owner; /* Unique owner. */