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| author | Hideo Aoki <haoki@redhat.com> | 2007-12-31 00:29:24 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-28 15:00:19 -0800 |
| commit | 95766fff6b9a78d11fc2d3812dd035381690b55d (patch) | |
| tree | c1ec9386a3d9a76a9f74bd230d3e7d4ee8059c51 /net/ipv6/udp.c | |
| parent | 3ab224be6d69de912ee21302745ea45a99274dbc (diff) | |
| download | linux-95766fff6b9a78d11fc2d3812dd035381690b55d.tar.gz linux-95766fff6b9a78d11fc2d3812dd035381690b55d.tar.bz2 linux-95766fff6b9a78d11fc2d3812dd035381690b55d.zip | |
[UDP]: Add memory accounting.
Signed-off-by: Takahiro Yasui <tyasui@redhat.com>
Signed-off-by: Hideo Aoki <haoki@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/udp.c')
| -rw-r--r-- | net/ipv6/udp.c | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index c9a97b405511..bf58acab2064 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -204,13 +204,17 @@ try_again: err = ulen; out_free: + lock_sock(sk); skb_free_datagram(sk, skb); + release_sock(sk); out: return err; csum_copy_err: + lock_sock(sk); if (!skb_kill_datagram(sk, skb, flags)) UDP6_INC_STATS_USER(UDP_MIB_INERRORS, is_udplite); + release_sock(sk); if (flags & MSG_DONTWAIT) return -EAGAIN; @@ -366,10 +370,21 @@ static int __udp6_lib_mcast_deliver(struct sk_buff *skb, struct in6_addr *saddr, while ((sk2 = udp_v6_mcast_next(sk_next(sk2), uh->dest, daddr, uh->source, saddr, dif))) { struct sk_buff *buff = skb_clone(skb, GFP_ATOMIC); - if (buff) - udpv6_queue_rcv_skb(sk2, buff); + if (buff) { + bh_lock_sock_nested(sk2); + if (!sock_owned_by_user(sk2)) + udpv6_queue_rcv_skb(sk2, buff); + else + sk_add_backlog(sk2, buff); + bh_unlock_sock(sk2); + } } - udpv6_queue_rcv_skb(sk, skb); + bh_lock_sock_nested(sk); + if (!sock_owned_by_user(sk)) + udpv6_queue_rcv_skb(sk, skb); + else + sk_add_backlog(sk, skb); + bh_unlock_sock(sk); out: read_unlock(&udp_hash_lock); return 0; @@ -482,7 +497,12 @@ int __udp6_lib_rcv(struct sk_buff *skb, struct hlist_head udptable[], /* deliver */ - udpv6_queue_rcv_skb(sk, skb); + bh_lock_sock_nested(sk); + if (!sock_owned_by_user(sk)) + udpv6_queue_rcv_skb(sk, skb); + else + sk_add_backlog(sk, skb); + bh_unlock_sock(sk); sock_put(sk); return 0; @@ -994,6 +1014,10 @@ struct proto udpv6_prot = { .hash = udp_lib_hash, .unhash = udp_lib_unhash, .get_port = udp_v6_get_port, + .memory_allocated = &udp_memory_allocated, + .sysctl_mem = sysctl_udp_mem, + .sysctl_wmem = &sysctl_udp_wmem_min, + .sysctl_rmem = &sysctl_udp_rmem_min, .obj_size = sizeof(struct udp6_sock), #ifdef CONFIG_COMPAT .compat_setsockopt = compat_udpv6_setsockopt, |