diff options
| author | Paolo Abeni <pabeni@redhat.com> | 2015-10-29 22:20:40 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-11-02 14:38:43 -0500 |
| commit | 9920e48b830a0f4ec06bcbf0ec3147c88ae72bac (patch) | |
| tree | ffc26343183c1249bc2456622bf733e6ca66bbcf | |
| parent | 1032a6687168af9509615879d513f77e4049062e (diff) | |
| download | linux-9920e48b830a0f4ec06bcbf0ec3147c88ae72bac.tar.bz2 | |
ipv4: use l4 hash for locally generated multipath flows
This patch changes how the multipath hash is computed for locally
generated flows: now the hash comprises l4 information.
This allows better utilization of the available paths when the existing
flows have the same source IP and the same destination IP: with l3 hash,
even when multiple connections are in place simultaneously, a single path
will be used, while with l4 hash we can use all the available paths.
v2 changes:
- use get_hash_from_flowi4() instead of implementing just another l4 hash
function
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv4/fib_semantics.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c index 42778d9d71e5..f30df0ee4f4d 100644 --- a/net/ipv4/fib_semantics.c +++ b/net/ipv4/fib_semantics.c @@ -1564,7 +1564,8 @@ void fib_select_path(struct net *net, struct fib_result *res, #ifdef CONFIG_IP_ROUTE_MULTIPATH if (res->fi->fib_nhs > 1 && fl4->flowi4_oif == 0) { if (mp_hash < 0) - mp_hash = fib_multipath_hash(fl4->saddr, fl4->daddr); + mp_hash = get_hash_from_flowi4(fl4) >> 1; + fib_select_multipath(res, mp_hash); } else |