Commit f68887de authored by Alexander Duyck's avatar Alexander Duyck Committed by Sasha Levin

net: Copy inner L3 and L4 headers as unaligned on GRE TEB

[ Upstream commit 78565208 ]

This patch corrects the unaligned accesses seen on GRE TEB tunnels when
generating hash keys.  Specifically what this patch does is make it so that
we force the use of skb_copy_bits when the GRE inner headers will be
unaligned due to NET_IP_ALIGNED being a non-zero value.
Signed-off-by: default avatarAlexander Duyck <aduyck@mirantis.com>
Acked-by: default avatarTom Herbert <tom@herbertland.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarSasha Levin <sasha.levin@oracle.com>
parent 916f9965
......@@ -233,6 +233,13 @@ bool __skb_flow_dissect(const struct sk_buff *skb, struct flow_keys *flow,
return false;
proto = eth->h_proto;
nhoff += sizeof(*eth);
/* Cap headers that we access via pointers at the
* end of the Ethernet header as our maximum alignment
* at that point is only 2 bytes.
*/
if (NET_IP_ALIGN)
hlen = nhoff;
}
goto again;
}
......
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