diff options
| author | Håkon Bugge <haakon.bugge@oracle.com> | 2022-10-12 16:15:42 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-11-10 17:57:49 +0100 |
| commit | 6b5c87f9b3f87d20935004d528e157dda30e4ea6 (patch) | |
| tree | 45e90548789c05bcee8191959527e9592975d6f3 | |
| parent | a0d9384967214783a92973c920092b7251c03e57 (diff) | |
RDMA/cma: Use output interface for net_dev check
[ Upstream commit eb83f502adb036cd56c27e13b9ca3b2aabfa790b ]
Commit 27cfde795a96 ("RDMA/cma: Fix arguments order in net device
validation") swapped the src and dst addresses in the call to
validate_net_dev().
As a consequence, the test in validate_ipv4_net_dev() to see if the
net_dev is the right one, is incorrect for port 1 <-> 2 communication when
the ports are on the same sub-net. This is fixed by denoting the
flowi4_oif as the device instead of the incoming one.
The bug has not been observed using IPv6 addresses.
Fixes: 27cfde795a96 ("RDMA/cma: Fix arguments order in net device validation")
Signed-off-by: Håkon Bugge <haakon.bugge@oracle.com>
Link: https://lore.kernel.org/r/20221012141542.16925-1-haakon.bugge@oracle.com
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/infiniband/core/cma.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index cf174aa7fe25..052d15629153 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -1434,7 +1434,7 @@ static bool validate_ipv4_net_dev(struct net_device *net_dev, return false; memset(&fl4, 0, sizeof(fl4)); - fl4.flowi4_iif = net_dev->ifindex; + fl4.flowi4_oif = net_dev->ifindex; fl4.daddr = daddr; fl4.saddr = saddr; |