diff options
| author | Benjamin LaHaise <bcrl@kvack.org> | 2012-04-27 08:23:21 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-04-28 22:21:50 -0400 |
| commit | f7ad74fef3af6c6e2ef7f01c5589d77fe7db3d7c (patch) | |
| tree | fc0276ddd7983b0e346ce08104c7165a0b710295 /net/ipv6 | |
| parent | a319726af99d3da87f942a4ae95a4f6527badf4a (diff) | |
| download | linux-f7ad74fef3af6c6e2ef7f01c5589d77fe7db3d7c.tar.bz2 | |
net/ipv6/udp: UDP encapsulation: break backlog_rcv into __udpv6_queue_rcv_skb
This is the first step in reworking the IPv6 UDP code to be structured more
like the IPv4 UDP code. This patch creates __udpv6_queue_rcv_skb() with
the equivalent sematics to __udp_queue_rcv_skb(), and wires it up to the
backlog_rcv method.
Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/udp.c | 42 |
1 files changed, 27 insertions, 15 deletions
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index d39bbc9e0622..6c0367ff7be7 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -496,6 +496,28 @@ out: sock_put(sk); } +static int __udpv6_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) +{ + int rc; + + if (!ipv6_addr_any(&inet6_sk(sk)->daddr)) + sock_rps_save_rxhash(sk, skb); + + rc = sock_queue_rcv_skb(sk, skb); + if (rc < 0) { + int is_udplite = IS_UDPLITE(sk); + + /* Note that an ENOMEM error is charged twice */ + if (rc == -ENOMEM) + UDP6_INC_STATS_BH(sock_net(sk), + UDP_MIB_RCVBUFERRORS, is_udplite); + UDP6_INC_STATS_BH(sock_net(sk), UDP_MIB_INERRORS, is_udplite); + kfree_skb(skb); + return -1; + } + return 0; +} + static __inline__ void udpv6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, u8 type, u8 code, int offset, __be32 info ) @@ -503,15 +525,12 @@ static __inline__ void udpv6_err(struct sk_buff *skb, __udp6_lib_err(skb, opt, type, code, offset, info, &udp_table); } -int udpv6_queue_rcv_skb(struct sock * sk, struct sk_buff *skb) +int udpv6_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) { struct udp_sock *up = udp_sk(sk); int rc; int is_udplite = IS_UDPLITE(sk); - if (!ipv6_addr_any(&inet6_sk(sk)->daddr)) - sock_rps_save_rxhash(sk, skb); - if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) goto drop; @@ -540,19 +559,12 @@ int udpv6_queue_rcv_skb(struct sock * sk, struct sk_buff *skb) } skb_dst_drop(skb); - rc = sock_queue_rcv_skb(sk, skb); - if (rc < 0) { - /* Note that an ENOMEM error is charged twice */ - if (rc == -ENOMEM) - UDP6_INC_STATS_BH(sock_net(sk), - UDP_MIB_RCVBUFERRORS, is_udplite); - goto drop_no_sk_drops_inc; - } - return 0; + rc = __udpv6_queue_rcv_skb(sk, skb); + + return rc; drop: atomic_inc(&sk->sk_drops); -drop_no_sk_drops_inc: UDP6_INC_STATS_BH(sock_net(sk), UDP_MIB_INERRORS, is_udplite); kfree_skb(skb); return -1; @@ -1471,7 +1483,7 @@ struct proto udpv6_prot = { .getsockopt = udpv6_getsockopt, .sendmsg = udpv6_sendmsg, .recvmsg = udpv6_recvmsg, - .backlog_rcv = udpv6_queue_rcv_skb, + .backlog_rcv = __udpv6_queue_rcv_skb, .hash = udp_lib_hash, .unhash = udp_lib_unhash, .rehash = udp_v6_rehash, |