ipv4: Don't pass IP fragments to upper layer GRO handlers.
authorSteffen Klassert <steffen.klassert@secunet.com>
Fri, 28 Apr 2017 08:54:32 +0000 (10:54 +0200)
committerDavid S. Miller <davem@davemloft.net>
Fri, 28 Apr 2017 20:00:38 +0000 (16:00 -0400)
commit9b83e0319840eca758ef586776a427284ff767bf
treeabeef13146401a752a054b63e092bd4193c3e925
parent504926df6df5383cad25146de3ed0a45e02c0901
ipv4: Don't pass IP fragments to upper layer GRO handlers.

Upper layer GRO handlers can not handle IP fragments, so
exit GRO processing in this case.

This fixes ESP GRO because the packet must be reassembled
before we can decapsulate, otherwise we get authentication
failures.

It also aligns IPv4 to IPv6 where packets with fragmentation
headers are not passed to upper layer GRO handlers.

Fixes: 7785bba299a8 ("esp: Add a software GRO codepath")
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/af_inet.c