erspan: Check IFLA_GRE_ERSPAN_VER is set.
authorWilliam Tu <u9012063@gmail.com>
Tue, 12 May 2020 17:36:23 +0000 (10:36 -0700)
committerDavid S. Miller <davem@davemloft.net>
Tue, 12 May 2020 20:11:41 +0000 (13:11 -0700)
commit1d2091e88d4647b857bb4b6c49615f1adea755f4
treeaad286134e49b89acbfb032c3acb6af575dc1b03
parent367f86f0a96f10900348d420bf89ca966b9e0f4d
erspan: Check IFLA_GRE_ERSPAN_VER is set.

Add a check to make sure the IFLA_GRE_ERSPAN_VER is provided by users.

Fixes: 70011e755a5f ("erspan: Add type I version 0 support.")
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: William Tu <u9012063@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/ip_gre.c