[NET] NETNS: Omit sock->sk_net without CONFIG_NET_NS.

[firefly-linux-kernel-4.4.55.git] / net / ipv6 / udp.c

diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index bf58acab206439551769c43efbf305c6f4ed7ba3..db266ff297e57c1e637c046ebeb8b713fb44af1b 100644 (file)
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -51,12 +51,13 @@
 #include <linux/seq_file.h>
 #include "udp_impl.h"
 
-static inline int udp_v6_get_port(struct sock *sk, unsigned short snum)
+int udp_v6_get_port(struct sock *sk, unsigned short snum)
 {
-       return udp_get_port(sk, snum, ipv6_rcv_saddr_equal);
+       return udp_lib_get_port(sk, snum, ipv6_rcv_saddr_equal);
 }
 
-static struct sock *__udp6_lib_lookup(struct in6_addr *saddr, __be16 sport,
+static struct sock *__udp6_lib_lookup(struct net *net,
+                                     struct in6_addr *saddr, __be16 sport,
                                      struct in6_addr *daddr, __be16 dport,
                                      int dif, struct hlist_head udptable[])
 {
@@ -69,7 +70,8 @@ static struct sock *__udp6_lib_lookup(struct in6_addr *saddr, __be16 sport,
        sk_for_each(sk, node, &udptable[hnum & (UDP_HTABLE_SIZE - 1)]) {
                struct inet_sock *inet = inet_sk(sk);
 
-               if (sk->sk_hash == hnum && sk->sk_family == PF_INET6) {
+               if (sock_net(sk) == net && sk->sk_hash == hnum &&
+                               sk->sk_family == PF_INET6) {
                        struct ipv6_pinfo *np = inet6_sk(sk);
                        int score = 0;
                        if (inet->dport) {
@@ -233,7 +235,7 @@ void __udp6_lib_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
        struct sock *sk;
        int err;
 
-       sk = __udp6_lib_lookup(daddr, uh->dest,
+       sk = __udp6_lib_lookup(dev_net(skb->dev), daddr, uh->dest,
                               saddr, uh->source, inet6_iif(skb), udptable);
        if (sk == NULL)
                return;
@@ -259,7 +261,7 @@ static __inline__ void udpv6_err(struct sk_buff *skb,
                                 struct inet6_skb_parm *opt, int type,
                                 int code, int offset, __be32 info     )
 {
-       return __udp6_lib_err(skb, opt, type, code, offset, info, udp_hash);
+       __udp6_lib_err(skb, opt, type, code, offset, info, udp_hash);
 }
 
 int udpv6_queue_rcv_skb(struct sock * sk, struct sk_buff *skb)
@@ -321,6 +323,9 @@ static struct sock *udp_v6_mcast_next(struct sock *sk,
        sk_for_each_from(s, node) {
                struct inet_sock *inet = inet_sk(s);
 
+               if (sock_net(s) != sock_net(sk))
+                       continue;
+
                if (s->sk_hash == num && s->sk_family == PF_INET6) {
                        struct ipv6_pinfo *np = inet6_sk(s);
                        if (inet->dport) {
@@ -478,7 +483,7 @@ int __udp6_lib_rcv(struct sk_buff *skb, struct hlist_head udptable[],
         * check socket cache ... must talk to Alan about his plans
         * for sock caches... i'll skip this for now.
         */
-       sk = __udp6_lib_lookup(saddr, uh->source,
+       sk = __udp6_lib_lookup(dev_net(skb->dev), saddr, uh->source,
                               daddr, uh->dest, inet6_iif(skb), udptable);
 
        if (sk == NULL) {
@@ -787,9 +792,7 @@ do_udp_sendmsg:
                else
                        hlimit = np->hop_limit;
                if (hlimit < 0)
-                       hlimit = dst_metric(dst, RTAX_HOPLIMIT);
-               if (hlimit < 0)
-                       hlimit = ipv6_get_hoplimit(dst->dev);
+                       hlimit = ip6_dst_hoplimit(dst);
        }
 
        if (tclass < 0) {
@@ -984,13 +987,13 @@ static struct udp_seq_afinfo udp6_seq_afinfo = {
        .seq_fops       = &udp6_seq_fops,
 };
 
-int __init udp6_proc_init(void)
+int udp6_proc_init(struct net *net)
 {
-       return udp_proc_register(&udp6_seq_afinfo);
+       return udp_proc_register(net, &udp6_seq_afinfo);
 }
 
-void udp6_proc_exit(void) {
-       udp_proc_unregister(&udp6_seq_afinfo);
+void udp6_proc_exit(struct net *net) {
+       udp_proc_unregister(net, &udp6_seq_afinfo);
 }
 #endif /* CONFIG_PROC_FS */
 
@@ -1019,6 +1022,7 @@ struct proto udpv6_prot = {
        .sysctl_wmem       = &sysctl_udp_wmem_min,
        .sysctl_rmem       = &sysctl_udp_rmem_min,
        .obj_size          = sizeof(struct udp6_sock),
+       .h.udp_hash        = udp_hash,
 #ifdef CONFIG_COMPAT
        .compat_setsockopt = compat_udpv6_setsockopt,
        .compat_getsockopt = compat_udpv6_getsockopt,