diff options
| -rw-r--r-- | include/net/ip.h | 1 | ||||
| -rw-r--r-- | net/ipv4/ip_input.c | 73 |
2 files changed, 37 insertions, 37 deletions
diff --git a/include/net/ip.h b/include/net/ip.h index 462182f78236..8866bfce6121 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -155,6 +155,7 @@ int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, void ip_list_rcv(struct list_head *head, struct packet_type *pt, struct net_device *orig_dev); int ip_local_deliver(struct sk_buff *skb); +void ip_protocol_deliver_rcu(struct net *net, struct sk_buff *skb, int proto); int ip_mr_input(struct sk_buff *skb); int ip_output(struct net *net, struct sock *sk, struct sk_buff *skb); int ip_mc_output(struct net *net, struct sock *sk, struct sk_buff *skb); diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c index 35a786c0aaa0..72250b4e466d 100644 --- a/net/ipv4/ip_input.c +++ b/net/ipv4/ip_input.c @@ -188,51 +188,50 @@ bool ip_call_ra_chain(struct sk_buff *skb) return false; } -static int ip_local_deliver_finish(struct net *net, struct sock *sk, struct sk_buff *skb) +void ip_protocol_deliver_rcu(struct net *net, struct sk_buff *skb, int protocol) { - __skb_pull(skb, skb_network_header_len(skb)); - - rcu_read_lock(); - { - int protocol = ip_hdr(skb)->protocol; - const struct net_protocol *ipprot; - int raw; + const struct net_protocol *ipprot; + int raw, ret; - resubmit: - raw = raw_local_deliver(skb, protocol); +resubmit: + raw = raw_local_deliver(skb, protocol); - ipprot = rcu_dereference(inet_protos[protocol]); - if (ipprot) { - int ret; - - if (!ipprot->no_policy) { - if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb)) { - kfree_skb(skb); - goto out; - } - nf_reset(skb); + ipprot = rcu_dereference(inet_protos[protocol]); + if (ipprot) { + if (!ipprot->no_policy) { + if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb)) { + kfree_skb(skb); + return; } - ret = ipprot->handler(skb); - if (ret < 0) { - protocol = -ret; - goto resubmit; + nf_reset(skb); + } + ret = ipprot->handler(skb); + if (ret < 0) { + protocol = -ret; + goto resubmit; + } + __IP_INC_STATS(net, IPSTATS_MIB_INDELIVERS); + } else { + if (!raw) { + if (xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb)) { + __IP_INC_STATS(net, IPSTATS_MIB_INUNKNOWNPROTOS); + icmp_send(skb, ICMP_DEST_UNREACH, + ICMP_PROT_UNREACH, 0); } - __IP_INC_STATS(net, IPSTATS_MIB_INDELIVERS); + kfree_skb(skb); } else { - if (!raw) { - if (xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb)) { - __IP_INC_STATS(net, IPSTATS_MIB_INUNKNOWNPROTOS); - icmp_send(skb, ICMP_DEST_UNREACH, - ICMP_PROT_UNREACH, 0); - } - kfree_skb(skb); - } else { - __IP_INC_STATS(net, IPSTATS_MIB_INDELIVERS); - consume_skb(skb); - } + __IP_INC_STATS(net, IPSTATS_MIB_INDELIVERS); + consume_skb(skb); } } - out: +} + +static int ip_local_deliver_finish(struct net *net, struct sock *sk, struct sk_buff *skb) +{ + __skb_pull(skb, skb_network_header_len(skb)); + + rcu_read_lock(); + ip_protocol_deliver_rcu(net, skb, ip_hdr(skb)->protocol); rcu_read_unlock(); return 0; |