erspan: build the header with the right proto according to erspan_ver

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[ Upstream commit 20704bd163 ]

As said in draft-foschiano-erspan-03#section4:

   Different frame variants known as "ERSPAN Types" can be
   distinguished based on the GRE "Protocol Type" field value: Type I
   and II's value is 0x88BE while Type III's is 0x22EB [ETYPES].

So set it properly in erspan_xmit() according to erspan_ver. While at
it, also remove the unused parameter 'proto' in erspan_fb_xmit().

Fixes: 94d7d8f292 ("ip6_gre: add erspan v2 support")
Reported-by: Jianlin Shi <jishi@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Xin Long 2019-01-14 18:10:06 +08:00 • committed by Greg Kroah-Hartman

parent 97521b30c1

commit 4e0a44cc57

2 changed files with 18 additions and 11 deletions

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23

net/ipv4/ip_gre.c

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6

net/ipv6/ip6_gre.c

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