gre: do not keep the GRE header around in collect medata mode

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For ipgre interface in collect metadata mode, it doesn't make sense for the
interface to be of ARPHRD_IPGRE type. The outer header of received packets
is not needed, as all the information from it is present in metadata_dst. We
already don't set ipgre_header_ops for collect metadata interfaces, which is
the only consumer of mac_header pointing to the outer IP header.

Just set the interface type to ARPHRD_NONE in collect metadata mode for
ipgre (not gretap, that still correctly stays ARPHRD_ETHER) and reset
mac_header.

Fixes: a64b04d86d ("gre: do not assign header_ops in collect metadata mode")
Fixes: 2e15ea390e ("ip_gre: Add support to collect tunnel metadata.")
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Jiri Benc 2016-05-11 15:53:57 +02:00 • committed by David S. Miller

parent 16ec3d4fbb

commit e271c7b442

1 changed files with 6 additions and 1 deletions

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net/ipv4/ip_gre.c

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