netns xfrm: lookup in netns

Pass netns to xfrm_lookup()/__xfrm_lookup(). For that pass netns
to flow_cache_lookup() and resolver callback.

Take it from socket or netdevice. Stub DECnet to init_net.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

13 files changed, 27 insertions, 22 deletions

diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 01edac888510..437b750b98fd 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -637,7 +637,7 @@ int inet6_sk_rebuild_header(struct sock *sk)
                 if (final_p)
                         ipv6_addr_copy(&fl.fl6_dst, final_p);
 
-                if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) {
+                if ((err = xfrm_lookup(sock_net(sk), &dst, &fl, sk, 0)) < 0) {
                         sk->sk_err_soft = -err;
                         return err;
                 }
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index e44deb8d4df2..e2bdc6d83a43 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -175,7 +175,8 @@ ipv4_connected:
         if (final_p)
                 ipv6_addr_copy(&fl.fl6_dst, final_p);
 
-        if ((err = __xfrm_lookup(&dst, &fl, sk, XFRM_LOOKUP_WAIT)) < 0) {
+        err = __xfrm_lookup(sock_net(sk), &dst, &fl, sk, XFRM_LOOKUP_WAIT);
+        if (err < 0) {
                 if (err == -EREMOTE)
                         err = ip6_dst_blackhole(sk, &dst, &fl);
                 if (err < 0)
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index a77b8d103804..4f433847d95f 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -427,7 +427,7 @@ void icmpv6_send(struct sk_buff *skb, int type, int code, __u32 info,
         /* No need to clone since we're just using its address. */
         dst2 = dst;
 
-        err = xfrm_lookup(&dst, &fl, sk, 0);
+        err = xfrm_lookup(net, &dst, &fl, sk, 0);
         switch (err) {
         case 0:
                 if (dst != dst2)
@@ -446,7 +446,7 @@ void icmpv6_send(struct sk_buff *skb, int type, int code, __u32 info,
         if (ip6_dst_lookup(sk, &dst2, &fl))
                 goto relookup_failed;
 
-        err = xfrm_lookup(&dst2, &fl, sk, XFRM_LOOKUP_ICMP);
+        err = xfrm_lookup(net, &dst2, &fl, sk, XFRM_LOOKUP_ICMP);
         switch (err) {
         case 0:
                 dst_release(dst);
@@ -552,7 +552,7 @@ static void icmpv6_echo_reply(struct sk_buff *skb)
         err = ip6_dst_lookup(sk, &dst, &fl);
         if (err)
                 goto out;
-        if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0)
+        if ((err = xfrm_lookup(net, &dst, &fl, sk, 0)) < 0)
                 goto out;
 
         if (ipv6_addr_is_multicast(&fl.fl6_dst))
diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c
index 16d43f20b32f..3c3732d50c1a 100644
--- a/net/ipv6/inet6_connection_sock.c
+++ b/net/ipv6/inet6_connection_sock.c
@@ -219,7 +219,7 @@ int inet6_csk_xmit(struct sk_buff *skb, int ipfragok)
                 if (final_p)
                         ipv6_addr_copy(&fl.fl6_dst, final_p);
 
-                if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) {
+                if ((err = xfrm_lookup(sock_net(sk), &dst, &fl, sk, 0)) < 0) {
                         sk->sk_route_caps = 0;
                         kfree_skb(skb);
                         return err;
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index ef249ab5c93c..58e2b0d93758 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -846,6 +846,7 @@ static int ip6_tnl_xmit2(struct sk_buff *skb,
                          int encap_limit,
                          __u32 *pmtu)
 {
+        struct net *net = dev_net(dev);
         struct ip6_tnl *t = netdev_priv(dev);
         struct net_device_stats *stats = &t->dev->stats;
         struct ipv6hdr *ipv6h = ipv6_hdr(skb);
@@ -861,9 +862,9 @@ static int ip6_tnl_xmit2(struct sk_buff *skb,
         if ((dst = ip6_tnl_dst_check(t)) != NULL)
                 dst_hold(dst);
         else {
-                dst = ip6_route_output(dev_net(dev), NULL, fl);
+                dst = ip6_route_output(net, NULL, fl);
 
-                if (dst->error || xfrm_lookup(&dst, fl, NULL, 0) < 0)
+                if (dst->error || xfrm_lookup(net, &dst, fl, NULL, 0) < 0)
                         goto tx_err_link_failure;
         }
 
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 870a1d64605a..0f3896032830 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -1466,7 +1466,7 @@ static void mld_sendpack(struct sk_buff *skb)
                          &ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr,
                          skb->dev->ifindex);
 
-        err = xfrm_lookup(&skb->dst, &fl, NULL, 0);
+        err = xfrm_lookup(net, &skb->dst, &fl, NULL, 0);
         if (err)
                 goto err_out;
 
@@ -1831,7 +1831,7 @@ static void igmp6_send(struct in6_addr *addr, struct net_device *dev, int type)
                          &ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr,
                          skb->dev->ifindex);
 
-        err = xfrm_lookup(&skb->dst, &fl, NULL, 0);
+        err = xfrm_lookup(net, &skb->dst, &fl, NULL, 0);
         if (err)
                 goto err_out;
 
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index af6705f03b5c..e4acc212345e 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -524,7 +524,7 @@ void ndisc_send_skb(struct sk_buff *skb,
                 return;
         }
 
-        err = xfrm_lookup(&dst, &fl, NULL, 0);
+        err = xfrm_lookup(net, &dst, &fl, NULL, 0);
         if (err < 0) {
                 kfree_skb(skb);
                 return;
@@ -1524,7 +1524,7 @@ void ndisc_send_redirect(struct sk_buff *skb, struct neighbour *neigh,
         if (dst == NULL)
                 return;
 
-        err = xfrm_lookup(&dst, &fl, NULL, 0);
+        err = xfrm_lookup(net, &dst, &fl, NULL, 0);
         if (err)
                 return;
 
diff --git a/net/ipv6/netfilter.c b/net/ipv6/netfilter.c
index fd5b3a4e3329..627e21db65df 100644
--- a/net/ipv6/netfilter.c
+++ b/net/ipv6/netfilter.c
@@ -29,7 +29,7 @@ int ip6_route_me_harder(struct sk_buff *skb)
 #ifdef CONFIG_XFRM
         if (!(IP6CB(skb)->flags & IP6SKB_XFRM_TRANSFORMED) &&
             xfrm_decode_session(skb, &fl, AF_INET6) == 0)
-                if (xfrm_lookup(&skb->dst, &fl, skb->sk, 0))
+                if (xfrm_lookup(net, &skb->dst, &fl, skb->sk, 0))
                         return -1;
 #endif
 
diff --git a/net/ipv6/netfilter/ip6t_REJECT.c b/net/ipv6/netfilter/ip6t_REJECT.c
index 0981b4ccb8b1..5a2d0a41694a 100644
--- a/net/ipv6/netfilter/ip6t_REJECT.c
+++ b/net/ipv6/netfilter/ip6t_REJECT.c
@@ -97,7 +97,7 @@ static void send_reset(struct net *net, struct sk_buff *oldskb)
         dst = ip6_route_output(net, NULL, &fl);
         if (dst == NULL)
                 return;
-        if (dst->error || xfrm_lookup(&dst, &fl, NULL, 0))
+        if (dst->error || xfrm_lookup(net, &dst, &fl, NULL, 0))
                 return;
 
         hh_len = (dst->dev->hard_header_len + 15)&~15;
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 2ba04d41dc25..61f6827e5906 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -860,7 +860,8 @@ static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
         if (final_p)
                 ipv6_addr_copy(&fl.fl6_dst, final_p);
 
-        if ((err = __xfrm_lookup(&dst, &fl, sk, XFRM_LOOKUP_WAIT)) < 0) {
+        err = __xfrm_lookup(sock_net(sk), &dst, &fl, sk, XFRM_LOOKUP_WAIT);
+        if (err < 0) {
                 if (err == -EREMOTE)
                         err = ip6_dst_blackhole(sk, &dst, &fl);
                 if (err < 0)
diff --git a/net/ipv6/syncookies.c b/net/ipv6/syncookies.c
index 676c80b5b14b..711175e0571f 100644
--- a/net/ipv6/syncookies.c
+++ b/net/ipv6/syncookies.c
@@ -259,7 +259,7 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb)
 
                 if (final_p)
                         ipv6_addr_copy(&fl.fl6_dst, final_p);
-                if ((xfrm_lookup(&dst, &fl, sk, 0)) < 0)
+                if ((xfrm_lookup(sock_net(sk), &dst, &fl, sk, 0)) < 0)
                         goto out_free;
         }
 
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index a5d750acd793..f259c9671f3e 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -260,7 +260,8 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
         if (final_p)
                 ipv6_addr_copy(&fl.fl6_dst, final_p);
 
-        if ((err = __xfrm_lookup(&dst, &fl, sk, XFRM_LOOKUP_WAIT)) < 0) {
+        err = __xfrm_lookup(sock_net(sk), &dst, &fl, sk, XFRM_LOOKUP_WAIT);
+        if (err < 0) {
                 if (err == -EREMOTE)
                         err = ip6_dst_blackhole(sk, &dst, &fl);
                 if (err < 0)
@@ -390,7 +391,7 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
                                 goto out;
                         }
 
-                        if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) {
+                        if ((err = xfrm_lookup(net, &dst, &fl, sk, 0)) < 0) {
                                 sk->sk_err_soft = -err;
                                 goto out;
                         }
@@ -492,7 +493,7 @@ static int tcp_v6_send_synack(struct sock *sk, struct request_sock *req)
                 goto done;
         if (final_p)
                 ipv6_addr_copy(&fl.fl6_dst, final_p);
-        if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0)
+        if ((err = xfrm_lookup(sock_net(sk), &dst, &fl, sk, 0)) < 0)
                 goto done;
 
         skb = tcp_make_synack(sk, dst, req);
@@ -1018,7 +1019,7 @@ static void tcp_v6_send_response(struct sk_buff *skb, u32 seq, u32 ack, u32 win,
          * namespace
          */
         if (!ip6_dst_lookup(ctl_sk, &buff->dst, &fl)) {
-                if (xfrm_lookup(&buff->dst, &fl, NULL, 0) >= 0) {
+                if (xfrm_lookup(net, &buff->dst, &fl, NULL, 0) >= 0) {
                         ip6_xmit(ctl_sk, buff, &fl, NULL, 0);
                         TCP_INC_STATS_BH(net, TCP_MIB_OUTSEGS);
                         if (rst)
@@ -1316,7 +1317,7 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
                 if (final_p)
                         ipv6_addr_copy(&fl.fl6_dst, final_p);
 
-                if ((xfrm_lookup(&dst, &fl, sk, 0)) < 0)
+                if ((xfrm_lookup(sock_net(sk), &dst, &fl, sk, 0)) < 0)
                         goto out;
         }
 
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index fd2d9ad4a8a3..38390dd19636 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -849,7 +849,8 @@ do_udp_sendmsg:
         if (final_p)
                 ipv6_addr_copy(&fl.fl6_dst, final_p);
 
-        if ((err = __xfrm_lookup(&dst, &fl, sk, XFRM_LOOKUP_WAIT)) < 0) {
+        err = __xfrm_lookup(sock_net(sk), &dst, &fl, sk, XFRM_LOOKUP_WAIT);
+        if (err < 0) {
                 if (err == -EREMOTE)
                         err = ip6_dst_blackhole(sk, &dst, &fl);
                 if (err < 0)