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authorPeter Nørlund <pch@ordbogen.com>2015-09-30 10:12:21 +0200
committerDavid S. Miller <davem@davemloft.net>2015-10-05 02:59:21 -0700
commit0e884c78ee19e902f300ed147083c28a0c6302f0 (patch)
tree4a60b19eed14b18e7f5473cfd0df6cb6434a57c4 /net/ipv4/route.c
parent2472186f58ee1e4b9ca194245fef03931f6de90a (diff)
ipv4: L3 hash-based multipath
Replaces the per-packet multipath with a hash-based multipath using source and destination address. Signed-off-by: Peter Nørlund <pch@ordbogen.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/route.c')
-rw-r--r--net/ipv4/route.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 76ca4e75f785..0cca44476b1e 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1658,8 +1658,12 @@ static int ip_mkroute_input(struct sk_buff *skb,
__be32 daddr, __be32 saddr, u32 tos)
{
#ifdef CONFIG_IP_ROUTE_MULTIPATH
- if (res->fi && res->fi->fib_nhs > 1)
- fib_select_multipath(res);
+ if (res->fi && res->fi->fib_nhs > 1) {
+ int h;
+
+ h = fib_multipath_hash(saddr, daddr);
+ fib_select_multipath(res, h);
+ }
#endif
/* create a routing cache entry */
@@ -2189,8 +2193,12 @@ struct rtable *__ip_route_output_key(struct net *net, struct flowi4 *fl4)
}
#ifdef CONFIG_IP_ROUTE_MULTIPATH
- if (res.fi->fib_nhs > 1 && fl4->flowi4_oif == 0)
- fib_select_multipath(&res);
+ if (res.fi->fib_nhs > 1 && fl4->flowi4_oif == 0) {
+ int h;
+
+ h = fib_multipath_hash(fl4->saddr, fl4->daddr);
+ fib_select_multipath(&res, h);
+ }
else
#endif
if (!res.prefixlen &&