Commit 29825717 authored Aug 23, 2017 by Jakub Sitnicki Committed by David S. Miller Aug 24, 2017

net: Extend struct flowi6 with multipath hash



Allow for functions that fill out the IPv6 flow info to also pass a hash
computed over the skb contents. The hash value will drive the multipath
routing decisions.

This is intended for special treatment of ICMPv6 errors, where we would
like to make a routing decision based on the flow identifying the
offending IPv6 datagram that triggered the error, rather than the flow
of the ICMP error itself.

Signed-off-by: Jakub Sitnicki <jkbs@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 790c6056

include/net/flow.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -149,6 +149,7 @@ struct flowi6 {
		#define fl6_ipsec_spi uli.spi
		#define fl6_mh_type uli.mht.type
		#define fl6_gre_key uli.gre_key
		__u32 mp_hash;
		} __attribute__((__aligned__(BITS_PER_LONG/8)));

		struct flowidn {