diff options
| author | Octavian Purdila <opurdila@ixiacom.com> | 2009-12-26 12:51:04 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-12-27 05:43:57 +0100 |
| commit | 6d2e3ea284463d5ab34e9cf2a41d0b8627b95d02 (patch) | |
| tree | 86ee780b06adfe388ac64dd66ece598be69b29ec /net | |
| parent | llc: optimize multicast delivery (diff) | |
| download | linux-6d2e3ea284463d5ab34e9cf2a41d0b8627b95d02.tar.xz linux-6d2e3ea284463d5ab34e9cf2a41d0b8627b95d02.zip | |
llc: use a device based hash table to speed up multicast delivery
This patch adds a per SAP device based hash table to solve the
multicast delivery scalability issue when we have large number of
interfaces and a large number of sockets bound to the same SAP.
Signed-off-by: Octavian Purdila <opurdila@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/llc/llc_conn.c | 10 | ||||
| -rw-r--r-- | net/llc/llc_sap.c | 8 |
2 files changed, 15 insertions, 3 deletions
diff --git a/net/llc/llc_conn.c b/net/llc/llc_conn.c index 77bb3816655e..10cdfe2db830 100644 --- a/net/llc/llc_conn.c +++ b/net/llc/llc_conn.c @@ -682,10 +682,15 @@ static int llc_find_offset(int state, int ev_type) */ void llc_sap_add_socket(struct llc_sap *sap, struct sock *sk) { + struct llc_sock *llc = llc_sk(sk); + struct hlist_head *dev_hb = llc_sk_dev_hash(sap, llc->dev->ifindex); + llc_sap_hold(sap); - spin_lock_bh(&sap->sk_lock); llc_sk(sk)->sap = sap; + + spin_lock_bh(&sap->sk_lock); sk_nulls_add_node_rcu(sk, &sap->sk_list); + hlist_add_head(&llc->dev_hash_node, dev_hb); spin_unlock_bh(&sap->sk_lock); } @@ -699,8 +704,11 @@ void llc_sap_add_socket(struct llc_sap *sap, struct sock *sk) */ void llc_sap_remove_socket(struct llc_sap *sap, struct sock *sk) { + struct llc_sock *llc = llc_sk(sk); + spin_lock_bh(&sap->sk_lock); sk_nulls_del_node_init_rcu(sk); + hlist_del(&llc->dev_hash_node); spin_unlock_bh(&sap->sk_lock); llc_sap_put(sap); } diff --git a/net/llc/llc_sap.c b/net/llc/llc_sap.c index 94790e60d072..94cb706f6cc4 100644 --- a/net/llc/llc_sap.c +++ b/net/llc/llc_sap.c @@ -387,10 +387,14 @@ static void llc_sap_mcast(struct llc_sap *sap, { int i = 0, count = 256 / sizeof(struct sock *); struct sock *sk, *stack[count]; - struct hlist_nulls_node *node; + struct hlist_node *node; + struct llc_sock *llc; + struct hlist_head *dev_hb = llc_sk_dev_hash(sap, skb->dev->ifindex); spin_lock_bh(&sap->sk_lock); - sk_nulls_for_each_rcu(sk, node, &sap->sk_list) { + hlist_for_each_entry(llc, node, dev_hb, dev_hash_node) { + + sk = &llc->sk; if (!llc_mcast_match(sap, laddr, skb, sk)) continue; |