[NETNS]: Process IP layer in the context of the correct namespace.

Replace all the rest of the init_net with a proper net on the IP layer.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

5 files changed, 14 insertions, 8 deletions

diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index 3b2e5adca838..8b448c4b9080 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -204,8 +204,11 @@ static void ip_expire(unsigned long arg)
 
         if ((qp->q.last_in&FIRST_IN) && qp->q.fragments != NULL) {
                 struct sk_buff *head = qp->q.fragments;
+                struct net *net;
+
+                net = container_of(qp->q.net, struct net, ipv4.frags);
                 /* Send an ICMP "Fragment Reassembly Timeout" message. */
-                if ((head->dev = dev_get_by_index(&init_net, qp->iif)) != NULL) {
+                if ((head->dev = dev_get_by_index(net, qp->iif)) != NULL) {
                         icmp_send(head, ICMP_TIME_EXCEEDED, ICMP_EXC_FRAGTIME, 0);
                         dev_put(head->dev);
                 }
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index f3a7a08a463f..eb1fa27dc0c4 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -160,6 +160,7 @@ int ip_call_ra_chain(struct sk_buff *skb)
         struct ip_ra_chain *ra;
         u8 protocol = ip_hdr(skb)->protocol;
         struct sock *last = NULL;
+        struct net_device *dev = skb->dev;
 
         read_lock(&ip_ra_lock);
         for (ra = ip_ra_chain; ra; ra = ra->next) {
@@ -170,7 +171,8 @@ int ip_call_ra_chain(struct sk_buff *skb)
                  */
                 if (sk && inet_sk(sk)->num == protocol &&
                     (!sk->sk_bound_dev_if ||
-                     sk->sk_bound_dev_if == skb->dev->ifindex)) {
+                     sk->sk_bound_dev_if == dev->ifindex) &&
+                    sk->sk_net == dev->nd_net) {
                         if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) {
                                 if (ip_defrag(skb, IP_DEFRAG_CALL_RA_CHAIN)) {
                                         read_unlock(&ip_ra_lock);
@@ -286,7 +288,7 @@ static inline int ip_rcv_options(struct sk_buff *skb)
         opt = &(IPCB(skb)->opt);
         opt->optlen = iph->ihl*4 - sizeof(struct iphdr);
 
-        if (ip_options_compile(&init_net, opt, skb)) {
+        if (ip_options_compile(dev->nd_net, opt, skb)) {
                 IP_INC_STATS_BH(IPSTATS_MIB_INHDRERRORS);
                 goto drop;
         }
diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c
index 59f7ddfb29bf..87cc1222c600 100644
--- a/net/ipv4/ip_options.c
+++ b/net/ipv4/ip_options.c
@@ -145,7 +145,7 @@ int ip_options_echo(struct ip_options * dopt, struct sk_buff * skb)
                                                 __be32 addr;
 
                                                 memcpy(&addr, sptr+soffset-1, 4);
-                                                if (inet_addr_type(&init_net, addr) != RTN_LOCAL) {
+                                                if (inet_addr_type(skb->dst->dev->nd_net, addr) != RTN_LOCAL) {
                                                         dopt->ts_needtime = 1;
                                                         soffset += 8;
                                                 }
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index dc494ea594a7..349fae58c1a3 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -351,7 +351,7 @@ int ip_queue_xmit(struct sk_buff *skb, int ipfragok)
                          * itself out.
                          */
                         security_sk_classify_flow(sk, &fl);
-                        if (ip_route_output_flow(&init_net, &rt, &fl, sk, 0))
+                        if (ip_route_output_flow(sk->sk_net, &rt, &fl, sk, 0))
                                 goto no_route;
                 }
                 sk_setup_caps(sk, &rt->u.dst);
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index 0857f2d042cd..b854431047a4 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -449,7 +449,8 @@ static int do_ip_setsockopt(struct sock *sk, int level,
                 struct ip_options * opt = NULL;
                 if (optlen > 40 || optlen < 0)
                         goto e_inval;
-                err = ip_options_get_from_user(&init_net, &opt, optval, optlen);
+                err = ip_options_get_from_user(sk->sk_net, &opt,
+                                               optval, optlen);
                 if (err)
                         break;
                 if (inet->is_icsk) {
@@ -589,13 +590,13 @@ static int do_ip_setsockopt(struct sock *sk, int level,
                                 err = 0;
                                 break;
                         }
-                        dev = ip_dev_find(&init_net, mreq.imr_address.s_addr);
+                        dev = ip_dev_find(sk->sk_net, mreq.imr_address.s_addr);
                         if (dev) {
                                 mreq.imr_ifindex = dev->ifindex;
                                 dev_put(dev);
                         }
                 } else
-                        dev = __dev_get_by_index(&init_net, mreq.imr_ifindex);
+                        dev = __dev_get_by_index(sk->sk_net, mreq.imr_ifindex);
 
 
                 err = -EADDRNOTAVAIL;