RE: [EXTERNAL] [PATCH net-next v2 1/3] net: prestera: ignore duplicate RIF destruction events

From: Yuyang Huang <redacted>
Sent: Saturday, July 11, 2026 3:54 AM
To: Yuyang Huang <redacted>
Cc: David S. Miller <davem@davemloft.net>; Andrew Lunn <andrew+netdev@lunn.ch>; David Ahern <dsahern@kernel.org>; Elad Nachman <enachman@marvell.com>; Eric Dumazet <redacted>; Ido Schimmel <idosch@nvidia.com>; Jakub Kicinski <kuba@kernel.org>; Johannes Berg <johannes@sipsolutions.net>; Paolo Abeni <pabeni@redhat.com>; Simon Horman <horms@kernel.org>; linux-kernel@vger.kernel.org; linux-wireless@vger.kernel.org; netdev@vger.kernel.org; Kuniyuki Iwashima <kuniyu@google.com>
Subject: [EXTERNAL] [PATCH net-next v2 1/3] net: prestera: ignore duplicate RIF destruction events

During address teardown, the inetaddr notifier may be called multiple
times for the same interface. Ignore NETDEV_DOWN events if the RIF has
already been destroyed, rather than returning -EEXIST, which aborts the
notifier chain.

Cc: Ido Schimmel <mailto:idosch@nvidia.com>
Cc: Kuniyuki Iwashima <mailto:kuniyu@google.com>
Signed-off-by: Yuyang Huang <mailto:yuyanghuang@google.com>
---
 drivers/net/ethernet/marvell/prestera/prestera_router.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/marvell/prestera/prestera_router.c b/drivers/net/ethernet/marvell/prestera/prestera_router.c
index b036b173a308..0c4f462baa6e 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_router.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_router.c

@@ -1302,10 +1302,8 @@ static int __prestera_inetaddr_port_event(struct net_device *port_dev,
              dev_hold(port_dev);
              break;
      case NETDEV_DOWN:
-             if (!re) {
-                     NL_SET_ERR_MSG_MOD(extack, "Can't find RIF");
-                     return -EEXIST;
-             }
+             if (!re)
+                     return 0;
              prestera_rif_entry_destroy(port->sw, re);
              dev_put(port_dev);
              break;
--

2.55.0.795.g602f6c329a-goog