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| author |   Håkon Bugge <haakon.bugge@oracle.com> | 2022-10-12 16:15:42 +0200 |
|---|---|---|
| committer |   Leon Romanovsky <leon@kernel.org> | 2022-10-19 10:02:52 +0300 |
| commit | eb83f502adb036cd56c27e13b9ca3b2aabfa790b (patch) | |
| tree | 0cfa9e1f9eb3ba5beeedef5850186de9163a2327 /drivers/infiniband/core/cma.c | |
| parent | Linux 6.1-rc1 (diff) | |
| download | linux-dev-eb83f502adb036cd56c27e13b9ca3b2aabfa790b.tar.xz linux-dev-eb83f502adb036cd56c27e13b9ca3b2aabfa790b.zip | |
RDMA/cma: Use output interface for net_dev check
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>
Diffstat (limited to 'drivers/infiniband/core/cma.c')
| -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 cc2222b85c88..26d1772179b8 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -1556,7 +1556,7 @@ 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; |