diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index 2bf8d78..b5c4f61 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -50,6 +50,7 @@
 #define IP_CMSG_TOS		4
 #define IP_CMSG_RECVOPTS	8
 #define IP_CMSG_RETOPTS		16
+#define IP_CMSG_PASSSEC		32
 
 /*
  *	SOL_IP control messages.
@@ -109,6 +110,19 @@
 	put_cmsg(msg, SOL_IP, IP_RETOPTS, opt->optlen, opt->__data);
 }
 
+static void ip_cmsg_recv_security(struct msghdr *msg, struct sk_buff *skb)
+{
+	char *secdata;
+	u32 seclen;
+	int err;
+
+	err = security_socket_getpeersec_dgram(skb, &secdata, &seclen);
+	if (err)
+		return;
+
+	put_cmsg(msg, SOL_IP, SCM_SECURITY, seclen, secdata);
+}
+
 
 void ip_cmsg_recv(struct msghdr *msg, struct sk_buff *skb)
 {
@@ -138,6 +152,11 @@
 
 	if (flags & 1)
 		ip_cmsg_recv_retopts(msg, skb);
+	if ((flags>>=1) == 0)
+		return;
+
+	if (flags & 1)
+		ip_cmsg_recv_security(msg, skb);
 }
 
 int ip_cmsg_send(struct msghdr *msg, struct ipcm_cookie *ipc)
@@ -393,7 +412,8 @@
 			    (1<<IP_RETOPTS) | (1<<IP_TOS) | 
 			    (1<<IP_TTL) | (1<<IP_HDRINCL) | 
 			    (1<<IP_MTU_DISCOVER) | (1<<IP_RECVERR) | 
-			    (1<<IP_ROUTER_ALERT) | (1<<IP_FREEBIND))) || 
+			    (1<<IP_ROUTER_ALERT) | (1<<IP_FREEBIND) |
+			    (1<<IP_PASSSEC))) ||
 				optname == IP_MULTICAST_TTL || 
 				optname == IP_MULTICAST_LOOP) { 
 		if (optlen >= sizeof(int)) {
@@ -478,6 +498,12 @@
 			else
 				inet->cmsg_flags &= ~IP_CMSG_RETOPTS;
 			break;
+		case IP_PASSSEC:
+			if (val)
+				inet->cmsg_flags |= IP_CMSG_PASSSEC;
+			else
+				inet->cmsg_flags &= ~IP_CMSG_PASSSEC;
+			break;
 		case IP_TOS:	/* This sets both TOS and Precedence */
 			if (sk->sk_type == SOCK_STREAM) {
 				val &= ~3;
@@ -932,6 +958,9 @@
 		case IP_RETOPTS:
 			val = (inet->cmsg_flags & IP_CMSG_RETOPTS) != 0;
 			break;
+		case IP_PASSSEC:
+			val = (inet->cmsg_flags & IP_CMSG_PASSSEC) != 0;
+			break;
 		case IP_TOS:
 			val = inet->tos;
 			break;