[NETFILTER]: x_tables: add TRACE target

The TRACE target can be used to follow IP and IPv6 packets through
the ruleset.

Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Patrick NcHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 1 deletions

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 2d6a14f5f2f1..625d73b07ab7 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -227,6 +227,7 @@ typedef unsigned char *sk_buff_data_t;
  *      @mark: Generic packet mark
  *      @nfct: Associated connection, if any
  *      @ipvs_property: skbuff is owned by ipvs
+ *      @nf_trace: netfilter packet trace flag
  *      @nfctinfo: Relationship of this skb to the connection
  *      @nfct_reasm: netfilter conntrack re-assembly pointer
  *      @nf_bridge: Saved data about a bridged frame - see br_netfilter.c
@@ -278,7 +279,8 @@ struct sk_buff {
                                 nfctinfo:3;
         __u8                    pkt_type:3,
                                 fclone:2,
-                                ipvs_property:1;
+                                ipvs_property:1,
+                                nf_trace:1;
         __be16                  protocol;
 
         void                    (*destructor)(struct sk_buff *skb);