From 4a19ec5800fc3bb64e2d87c4d9fdd9e636086fe0 Mon Sep 17 00:00:00 2001
From: Laszlo Attila Toth <panther@balabit.hu>
Date: Wed, 30 Jan 2008 19:08:16 -0800
Subject: [NET]: Introducing socket mark socket option.

A userspace program may wish to set the mark for each packets its send
without using the netfilter MARK target. Changing the mark can be used
for mark based routing without netfilter or for packet filtering.

It requires CAP_NET_ADMIN capability.

Signed-off-by: Laszlo Attila Toth <panther@balabit.hu>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 include/net/route.h | 2 ++
 include/net/sock.h  | 2 ++
 2 files changed, 4 insertions(+)

(limited to 'include/net')

diff --git a/include/net/route.h b/include/net/route.h
index 4eabf00..fcc6d5b 100644
--- a/include/net/route.h
+++ b/include/net/route.h
@@ -27,6 +27,7 @@
 #include <net/dst.h>
 #include <net/inetpeer.h>
 #include <net/flow.h>
+#include <net/sock.h>
 #include <linux/in_route.h>
 #include <linux/rtnetlink.h>
 #include <linux/route.h>
@@ -149,6 +150,7 @@ static inline int ip_route_connect(struct rtable **rp, __be32 dst,
 				   int flags)
 {
 	struct flowi fl = { .oif = oif,
+			    .mark = sk->sk_mark,
 			    .nl_u = { .ip4_u = { .daddr = dst,
 						 .saddr = src,
 						 .tos   = tos } },
diff --git a/include/net/sock.h b/include/net/sock.h
index 9023244..e3fb4c0 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -262,6 +262,8 @@ struct sock {
 	__u32			sk_sndmsg_off;
 	int			sk_write_pending;
 	void			*sk_security;
+	__u32			sk_mark;
+	/* XXX 4 bytes hole on 64 bit */
 	void			(*sk_state_change)(struct sock *sk);
 	void			(*sk_data_ready)(struct sock *sk, int bytes);
 	void			(*sk_write_space)(struct sock *sk);
-- 
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