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[PATCH net-next 2/5] net: Extend struct flowi6 with multipath hash

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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>
---
 include/net/flow.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/net/flow.h b/include/net/flow.h
index 035aa77..73ee3aa 100644
--- a/include/net/flow.h
+++ b/include/net/flow.h
@@ -143,6 +143,7 @@ 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 {
-- 
2.7.4

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[PATCH net-next 0/5] Route ICMPv6 errors with the flow when ECMP in use Jakub Sitnicki <jkbs@redhat.com> - 2016-10-24 11:30 +0200
  [PATCH net-next 3/5] ipv6: Use multipath hash from flow info if available Jakub Sitnicki <jkbs@redhat.com> - 2016-10-24 11:30 +0200
    Re: [PATCH net-next 3/5] ipv6: Use multipath hash from flow info if  available Hannes Frederic Sowa <hannes@stressinduktion.org> - 2016-10-24 11:50 +0200
  [PATCH net-next 2/5] net: Extend struct flowi6 with multipath hash Jakub Sitnicki <jkbs@redhat.com> - 2016-10-24 11:30 +0200
    Re: [PATCH net-next 2/5] net: Extend struct flowi6 with multipath  hash Hannes Frederic Sowa <hannes@stressinduktion.org> - 2016-10-24 11:40 +0200
  [PATCH net-next 1/5] ipv6: Fold rt6_info_hash_nhsfn() into its only caller Jakub Sitnicki <jkbs@redhat.com> - 2016-10-24 11:40 +0200

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