netfilter: netns: ip6t_REJECT in netns for real

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>

1 files changed, 12 insertions, 10 deletions

diff --git a/net/ipv6/netfilter/ip6t_REJECT.c b/net/ipv6/netfilter/ip6t_REJECT.c
index 672ad9ff3e2..f1a9fce1ec9 100644
--- a/net/ipv6/netfilter/ip6t_REJECT.c
+++ b/net/ipv6/netfilter/ip6t_REJECT.c
@@ -35,7 +35,7 @@ MODULE_DESCRIPTION("Xtables: packet \"rejection\" target for IPv6");
 MODULE_LICENSE("GPL");
 
 /* Send RST reply */
-static void send_reset(struct sk_buff *oldskb)
+static void send_reset(struct net *net, struct sk_buff *oldskb)
 {
         struct sk_buff *nskb;
         struct tcphdr otcph, *tcph;
@@ -94,7 +94,7 @@ static void send_reset(struct sk_buff *oldskb)
         fl.fl_ip_sport = otcph.dest;
         fl.fl_ip_dport = otcph.source;
         security_skb_classify_flow(oldskb, &fl);
-        dst = ip6_route_output(&init_net, NULL, &fl);
+        dst = ip6_route_output(net, NULL, &fl);
         if (dst == NULL)
                 return;
         if (dst->error || xfrm_lookup(&dst, &fl, NULL, 0))
@@ -163,10 +163,11 @@ static void send_reset(struct sk_buff *oldskb)
 }
 
 static inline void
-send_unreach(struct sk_buff *skb_in, unsigned char code, unsigned int hooknum)
+send_unreach(struct net *net, struct sk_buff *skb_in, unsigned char code,
+             unsigned int hooknum)
 {
         if (hooknum == NF_INET_LOCAL_OUT && skb_in->dev == NULL)
-                skb_in->dev = init_net.loopback_dev;
+                skb_in->dev = net->loopback_dev;
 
         icmpv6_send(skb_in, ICMPV6_DEST_UNREACH, code, 0, NULL);
 }
@@ -177,6 +178,7 @@ reject_tg6(struct sk_buff *skb, const struct net_device *in,
            const struct xt_target *target, const void *targinfo)
 {
         const struct ip6t_reject_info *reject = targinfo;
+        struct net *net = dev_net(in ? in : out);
 
         pr_debug("%s: medium point\n", __func__);
         /* WARNING: This code causes reentry within ip6tables.
@@ -184,25 +186,25 @@ reject_tg6(struct sk_buff *skb, const struct net_device *in,
            must return an absolute verdict. --RR */
         switch (reject->with) {
         case IP6T_ICMP6_NO_ROUTE:
-                send_unreach(skb, ICMPV6_NOROUTE, hooknum);
+                send_unreach(net, skb, ICMPV6_NOROUTE, hooknum);
                 break;
         case IP6T_ICMP6_ADM_PROHIBITED:
-                send_unreach(skb, ICMPV6_ADM_PROHIBITED, hooknum);
+                send_unreach(net, skb, ICMPV6_ADM_PROHIBITED, hooknum);
                 break;
         case IP6T_ICMP6_NOT_NEIGHBOUR:
-                send_unreach(skb, ICMPV6_NOT_NEIGHBOUR, hooknum);
+                send_unreach(net, skb, ICMPV6_NOT_NEIGHBOUR, hooknum);
                 break;
         case IP6T_ICMP6_ADDR_UNREACH:
-                send_unreach(skb, ICMPV6_ADDR_UNREACH, hooknum);
+                send_unreach(net, skb, ICMPV6_ADDR_UNREACH, hooknum);
                 break;
         case IP6T_ICMP6_PORT_UNREACH:
-                send_unreach(skb, ICMPV6_PORT_UNREACH, hooknum);
+                send_unreach(net, skb, ICMPV6_PORT_UNREACH, hooknum);
                 break;
         case IP6T_ICMP6_ECHOREPLY:
                 /* Do nothing */
                 break;
         case IP6T_TCP_RESET:
-                send_reset(skb);
+                send_reset(net, skb);
                 break;
         default:
                 if (net_ratelimit())