pkt_sched: namespace aware act_mirred

Eric Dumazet pointed out that act_mirred needs to find the current net_ns,
and struct net pointer is not provided in the call chain.  His original
patch made use of current->nsproxy->net_ns to find the network namespace,
but this fails to work correctly for userspace code that makes use of
netlink sockets in different network namespaces.  Instead, pass the
"struct net *" down along the call chain to where it is needed.

This version removes the ifb changes as Eric has submitted that patch
separately, but is otherwise identical to the previous version.

Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>
Tested-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 3 deletions

diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h
index 9fcc680ab6b9..13174509cdfd 100644
--- a/include/net/pkt_cls.h
+++ b/include/net/pkt_cls.h
@@ -126,9 +126,10 @@ tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts,
         return 0;
 }
 
-extern int tcf_exts_validate(struct tcf_proto *tp, struct nlattr **tb,
-                             struct nlattr *rate_tlv, struct tcf_exts *exts,
-                             const struct tcf_ext_map *map);
+extern int tcf_exts_validate(struct net *net, struct tcf_proto *tp,
+                             struct nlattr **tb, struct nlattr *rate_tlv,
+                             struct tcf_exts *exts,
+                             const struct tcf_ext_map *map);
 extern void tcf_exts_destroy(struct tcf_proto *tp, struct tcf_exts *exts);
 extern void tcf_exts_change(struct tcf_proto *tp, struct tcf_exts *dst,
                              struct tcf_exts *src);