ipv4: Implement IP_TRANSPARENT socket option
This patch introduces the IP_TRANSPARENT socket option: enabling that
will make the IPv4 routing omit the non-local source address check on
output. Setting IP_TRANSPARENT requires NET_ADMIN capability.
Signed-off-by: KOVACS Krisztian <hidden@sch.bme.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/in.h b/include/linux/in.h
index 4065313..db458be 100644
--- a/include/linux/in.h
+++ b/include/linux/in.h
@@ -75,6 +75,7 @@
#define IP_IPSEC_POLICY 16
#define IP_XFRM_POLICY 17
#define IP_PASSSEC 18
+#define IP_TRANSPARENT 19
/* BSD compatibility */
#define IP_RECVRETOPTS IP_RETOPTS
diff --git a/include/net/inet_sock.h b/include/net/inet_sock.h
index 643e26b..e97b66e 100644
--- a/include/net/inet_sock.h
+++ b/include/net/inet_sock.h
@@ -129,7 +129,8 @@
is_icsk:1,
freebind:1,
hdrincl:1,
- mc_loop:1;
+ mc_loop:1,
+ transparent:1;
int mc_index;
__be32 mc_addr;
struct ip_mc_socklist *mc_list;
diff --git a/include/net/inet_timewait_sock.h b/include/net/inet_timewait_sock.h
index 9132490..80e4977 100644
--- a/include/net/inet_timewait_sock.h
+++ b/include/net/inet_timewait_sock.h
@@ -128,7 +128,8 @@
__be16 tw_dport;
__u16 tw_num;
/* And these are ours. */
- __u8 tw_ipv6only:1;
+ __u8 tw_ipv6only:1,
+ tw_transparent:1;
/* 15 bits hole, try to pack */
__u16 tw_ipv6_offset;
unsigned long tw_ttd;