path: root/net/rds/connection.c
diff options
authorHannes Frederic Sowa <hannes@stressinduktion.org>2013-10-19 21:48:57 +0200
committerDavid S. Miller <davem@davemloft.net>2013-10-19 19:45:35 -0400
commit1bbdceef1e535add893bf71d7b7ab102e4eb69eb (patch)
treee2eed21c778d0a6458f8350ce5f6fbfc6c58810e /net/rds/connection.c
parentinet: split syncookie keys for ipv4 and ipv6 and initialize with net_get_random_once (diff)
inet: convert inet_ehash_secret and ipv6_hash_secret to net_get_random_once
Initialize the ehash and ipv6_hash_secrets with net_get_random_once. Each compilation unit gets its own secret now: ipv4/inet_hashtables.o ipv4/udp.o ipv6/inet6_hashtables.o ipv6/udp.o rds/connection.o The functions still get inlined into the hashing functions. In the fast path we have at most two (needed in ipv6) if (unlikely(...)). Cc: Eric Dumazet <edumazet@google.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
1 files changed, 9 insertions, 3 deletions
diff --git a/net/rds/connection.c b/net/rds/connection.c
index 45e23660437a..378c3a6acf84 100644
--- a/net/rds/connection.c
+++ b/net/rds/connection.c
@@ -51,10 +51,16 @@ static struct kmem_cache *rds_conn_slab;
static struct hlist_head *rds_conn_bucket(__be32 laddr, __be32 faddr)
+ static u32 rds_hash_secret __read_mostly;
+ unsigned long hash;
+ net_get_random_once(&rds_hash_secret, sizeof(rds_hash_secret));
/* Pass NULL, don't need struct net for hash */
- unsigned long hash = __inet_ehashfn(be32_to_cpu(laddr), 0,
- be32_to_cpu(faddr), 0,
- inet_ehash_secret);
+ hash = __inet_ehashfn(be32_to_cpu(laddr), 0,
+ be32_to_cpu(faddr), 0,
+ rds_hash_secret);
return &rds_conn_hash[hash & RDS_CONNECTION_HASH_MASK];