commit 715f504b118998c41a2079a17e16bf5a8a114885
author Hannes Frederic Sowa <hannes@stressinduktion.org> Wed Dec 16 17:22:47 2015 +0100
committer David S. Miller <davem@davemloft.net> Thu Dec 17 15:12:28 2015 -0500
tree 5d7953224747992bdc2cf8cf5556a81ac84c0a76
parent 32bc201e1974976b7d3fea9a9b17bb7392ca6394

ipv6: add IPV6_HDRINCL option for raw sockets

Same as in Windows, we miss IPV6_HDRINCL for SOL_IPV6 and SOL_RAW.
The SOL_IP/IP_HDRINCL is not available for IPv6 sockets.

Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/uapi/linux/in6.h

diff --git a/include/uapi/linux/in6.h b/include/uapi/linux/in6.h
index 79b12b0..318a482 100644
--- a/include/uapi/linux/in6.h
+++ b/include/uapi/linux/in6.h
@@ -196,6 +196,7 @@
 
 #define IPV6_IPSEC_POLICY	34
 #define IPV6_XFRM_POLICY	35
+#define IPV6_HDRINCL		36
 #endif
 
 /*

net/ipv6/raw.c

diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 9914098..fa59dd7 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -972,6 +972,11 @@
 		return -EFAULT;
 
 	switch (optname) {
+	case IPV6_HDRINCL:
+		if (sk->sk_type != SOCK_RAW)
+			return -EINVAL;
+		inet_sk(sk)->hdrincl = !!val;
+		return 0;
 	case IPV6_CHECKSUM:
 		if (inet_sk(sk)->inet_num == IPPROTO_ICMPV6 &&
 		    level == IPPROTO_IPV6) {
@@ -1016,7 +1021,8 @@
 			return -EOPNOTSUPP;
 		return rawv6_seticmpfilter(sk, level, optname, optval, optlen);
 	case SOL_IPV6:
-		if (optname == IPV6_CHECKSUM)
+		if (optname == IPV6_CHECKSUM ||
+		    optname == IPV6_HDRINCL)
 			break;
 	default:
 		return ipv6_setsockopt(sk, level, optname, optval, optlen);
@@ -1037,7 +1043,8 @@
 			return -EOPNOTSUPP;
 		return rawv6_seticmpfilter(sk, level, optname, optval, optlen);
 	case SOL_IPV6:
-		if (optname == IPV6_CHECKSUM)
+		if (optname == IPV6_CHECKSUM ||
+		    optname == IPV6_HDRINCL)
 			break;
 	default:
 		return compat_ipv6_setsockopt(sk, level, optname,
@@ -1057,6 +1064,9 @@
 		return -EFAULT;
 
 	switch (optname) {
+	case IPV6_HDRINCL:
+		val = inet_sk(sk)->hdrincl;
+		break;
 	case IPV6_CHECKSUM:
 		/*
 		 * We allow getsockopt() for IPPROTO_IPV6-level
@@ -1094,7 +1104,8 @@
 			return -EOPNOTSUPP;
 		return rawv6_geticmpfilter(sk, level, optname, optval, optlen);
 	case SOL_IPV6:
-		if (optname == IPV6_CHECKSUM)
+		if (optname == IPV6_CHECKSUM ||
+		    optname == IPV6_HDRINCL)
 			break;
 	default:
 		return ipv6_getsockopt(sk, level, optname, optval, optlen);
@@ -1115,7 +1126,8 @@
 			return -EOPNOTSUPP;
 		return rawv6_geticmpfilter(sk, level, optname, optval, optlen);
 	case SOL_IPV6:
-		if (optname == IPV6_CHECKSUM)
+		if (optname == IPV6_CHECKSUM ||
+		    optname == IPV6_HDRINCL)
 			break;
 	default:
 		return compat_ipv6_getsockopt(sk, level, optname,