diff mbox series

[19.11,v2] net/mlx5: fix storing the synched MAC to internal table

Message ID 20210217210320.11640-1-sodey@rbbn.com (mailing list archive)
State Not Applicable, archived
Headers
Series [19.11,v2] net/mlx5: fix storing the synched MAC to internal table |

Checks

Context Check Description
ci/checkpatch warning coding style issues
ci/Intel-compilation fail apply issues

Commit Message

Dey, Souvik Feb. 17, 2021, 9:03 p.m. UTC 
  From: Souvik Dey <sodey@rbbn.com>

[ upstream commit 493f0bb51c1144eedcff2bba199cab1b64ff9fd0 ]

As the internal MAC table is divided into Unicast and Multicast address
sections, we should check the type of synched MAC address before storing
it to the internal table. Currently the check is not done, and the
synched MAC of 33:33:00:00:00:01 gets stored in the unicast section
(mostly index 1) causing all subsequent mlx5_set_mc_addr_list()
to fail with error -EADDRINUSE, as the mac_list contains the MAC
33:33:00:00:00:01. This denies adding of any new multicast address to
the internal list and also fails to add the MAC address to the device
in case of SR-IOV VF.

Fixes: f22442cb5d42 ("net/mlx5: reduce Netlink commands dependencies")
Fixes: ccdcba53a3f4 ("net/mlx5: use Netlink to add/remove MAC addresses")

Signed-off-by: Souvik Dey <sodey@rbbn.com>
---

v2:
* Fixing the compilation errors.

---
 drivers/net/mlx5/mlx5_nl.c | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/mlx5/mlx5_nl.c b/drivers/net/mlx5/mlx5_nl.c
index 64580b9..6db372e 100644
--- a/drivers/net/mlx5/mlx5_nl.c
+++ b/drivers/net/mlx5/mlx5_nl.c
@@ -678,11 +678,24 @@  mlx5_nl_mac_addr_sync(struct rte_eth_dev *dev)
 				break;
 		if (j != MLX5_MAX_MAC_ADDRESSES)
 			continue;
-		/* Find the first entry available. */
-		for (j = 0; j != MLX5_MAX_MAC_ADDRESSES; ++j) {
-			if (rte_is_zero_ether_addr(&dev->data->mac_addrs[j])) {
-				dev->data->mac_addrs[j] = macs[i];
-				break;
+		if (rte_is_multicast_ether_addr(&dev->data->mac_addrs[j])) {
+			/* Find the first entry available. */
+			for (j = MLX5_MAX_UC_MAC_ADDRESSES;
+					j != MLX5_MAX_MAC_ADDRESSES; ++j) {
+				if (rte_is_zero_ether_addr(
+						&dev->data->mac_addrs[j])) {
+					dev->data->mac_addrs[j] = macs[i];
+					break;
+				}
+			}
+		} else {
+			/* Find the first entry available. */
+			for (j = 0; j != MLX5_MAX_UC_MAC_ADDRESSES; ++j) {
+				if (rte_is_zero_ether_addr(
+						&dev->data->mac_addrs[j])) {
+					dev->data->mac_addrs[j] = macs[i];
+					break;
+				}
 			}
 		}
 	}