This is a note to let you know that I've just added the patch titled
mlxsw: spectrum_router: Fix IPv4 nexthop gateway indication
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mlxsw-spectrum_router-fix-ipv4-nexthop-gateway-indication.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From e5ec6a2513383fe2ecc2ee3b5f51d97acbbcd4d8 Mon Sep 17 00:00:00 2001
From: Ido Schimmel <idosch@xxxxxxxxxx>
Date: Tue, 19 Jul 2022 15:26:26 +0300
Subject: mlxsw: spectrum_router: Fix IPv4 nexthop gateway indication
From: Ido Schimmel <idosch@xxxxxxxxxx>
commit e5ec6a2513383fe2ecc2ee3b5f51d97acbbcd4d8 upstream.
mlxsw needs to distinguish nexthops with a gateway from connected
nexthops in order to write the former to the adjacency table of the
device. The check used to rely on the fact that nexthops with a gateway
have a 'link' scope whereas connected nexthops have a 'host' scope. This
is no longer correct after commit 747c14307214 ("ip: fix dflt addr
selection for connected nexthop").
Fix that by instead checking the address family of the gateway IP. This
is a more direct way and also consistent with the IPv6 counterpart in
mlxsw_sp_rt6_is_gateway().
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 747c14307214 ("ip: fix dflt addr selection for connected nexthop")
Fixes: 597cfe4fc339 ("nexthop: Add support for IPv4 nexthops")
Signed-off-by: Ido Schimmel <idosch@xxxxxxxxxx>
Reviewed-by: Amit Cohen <amcohen@xxxxxxxxxx>
Reviewed-by: Nicolas Dichtel <nicolas.dichtel@xxxxxxxxx>
Reviewed-by: David Ahern <dsahern@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
@@ -5196,7 +5196,7 @@ static bool mlxsw_sp_fi_is_gateway(const
{
const struct fib_nh *nh = fib_info_nh(fi, 0);
- return nh->fib_nh_scope == RT_SCOPE_LINK ||
+ return nh->fib_nh_gw_family ||
mlxsw_sp_nexthop4_ipip_type(mlxsw_sp, nh, NULL);
}
Patches currently in stable-queue which might be from idosch@xxxxxxxxxx are
queue-5.15/mlxsw-spectrum_router-fix-ipv4-nexthop-gateway-indication.patch
