X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=net%2Fipv4%2Fip_sockglue.c;h=e982b5c1ee17c6788b3a11767336ef59ebb2983a;hb=864f0f61f829bac5f150a903aad9619322a25424;hp=0660494196e687cf15ba5909faa128d3de01dba6;hpb=0579016ec4691116f6322ec6ed7fb7ce746948e9;p=safe%2Fjmp%2Flinux-2.6

diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index 0660494..e982b5c 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -4,15 +4,13 @@
  *		interface as the means of communication with the user level.
  *
  *		The IP to API glue.
- *		
- * Version:	$Id: ip_sockglue.c,v 1.62 2002/02/01 22:01:04 davem Exp $
  *
  * Authors:	see ip.c
  *
  * Fixes:
  *		Many		:	Split from ip.c , see ip.c for history.
  *		Martin Mares	:	TOS setting fixed.
- *		Alan Cox	:	Fixed a couple of oopses in Martin's 
+ *		Alan Cox	:	Fixed a couple of oopses in Martin's
  *					TOS tweaks.
  *		Mike McLagan	:	Routing by source
  */
@@ -20,7 +18,6 @@
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/mm.h>
-#include <linux/sched.h>
 #include <linux/skbuff.h>
 #include <linux/ip.h>
 #include <linux/icmp.h>
@@ -37,6 +34,7 @@
 #include <linux/mroute.h>
 #include <net/route.h>
 #include <net/xfrm.h>
+#include <net/compat.h>
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
 #include <net/transp_v6.h>
 #endif
@@ -50,6 +48,7 @@
 #define IP_CMSG_RECVOPTS	8
 #define IP_CMSG_RETOPTS		16
 #define IP_CMSG_PASSSEC		32
+#define IP_CMSG_ORIGDSTADDR     64
 
 /*
  *	SOL_IP control messages.
@@ -58,9 +57,9 @@
 static void ip_cmsg_recv_pktinfo(struct msghdr *msg, struct sk_buff *skb)
 {
 	struct in_pktinfo info;
-	struct rtable *rt = (struct rtable *)skb->dst;
+	struct rtable *rt = skb_rtable(skb);
 
-	info.ipi_addr.s_addr = skb->nh.iph->daddr;
+	info.ipi_addr.s_addr = ip_hdr(skb)->daddr;
 	if (rt) {
 		info.ipi_ifindex = rt->rt_iif;
 		info.ipi_spec_dst.s_addr = rt->rt_spec_dst;
@@ -74,13 +73,13 @@ static void ip_cmsg_recv_pktinfo(struct msghdr *msg, struct sk_buff *skb)
 
 static void ip_cmsg_recv_ttl(struct msghdr *msg, struct sk_buff *skb)
 {
-	int ttl = skb->nh.iph->ttl;
+	int ttl = ip_hdr(skb)->ttl;
 	put_cmsg(msg, SOL_IP, IP_TTL, sizeof(int), &ttl);
 }
 
 static void ip_cmsg_recv_tos(struct msghdr *msg, struct sk_buff *skb)
 {
-	put_cmsg(msg, SOL_IP, IP_TOS, 1, &skb->nh.iph->tos);
+	put_cmsg(msg, SOL_IP, IP_TOS, 1, &ip_hdr(skb)->tos);
 }
 
 static void ip_cmsg_recv_opts(struct msghdr *msg, struct sk_buff *skb)
@@ -88,14 +87,15 @@ static void ip_cmsg_recv_opts(struct msghdr *msg, struct sk_buff *skb)
 	if (IPCB(skb)->opt.optlen == 0)
 		return;
 
-	put_cmsg(msg, SOL_IP, IP_RECVOPTS, IPCB(skb)->opt.optlen, skb->nh.iph+1);
+	put_cmsg(msg, SOL_IP, IP_RECVOPTS, IPCB(skb)->opt.optlen,
+		 ip_hdr(skb) + 1);
 }
 
 
 static void ip_cmsg_recv_retopts(struct msghdr *msg, struct sk_buff *skb)
 {
 	unsigned char optbuf[sizeof(struct ip_options) + 40];
-	struct ip_options * opt = (struct ip_options*)optbuf;
+	struct ip_options * opt = (struct ip_options *)optbuf;
 
 	if (IPCB(skb)->opt.optlen == 0)
 		return;
@@ -127,6 +127,27 @@ static void ip_cmsg_recv_security(struct msghdr *msg, struct sk_buff *skb)
 	security_release_secctx(secdata, seclen);
 }
 
+static void ip_cmsg_recv_dstaddr(struct msghdr *msg, struct sk_buff *skb)
+{
+	struct sockaddr_in sin;
+	struct iphdr *iph = ip_hdr(skb);
+	__be16 *ports = (__be16 *)skb_transport_header(skb);
+
+	if (skb_transport_offset(skb) + 4 > skb->len)
+		return;
+
+	/* All current transport protocols have the port numbers in the
+	 * first four bytes of the transport header and this function is
+	 * written with this assumption in mind.
+	 */
+
+	sin.sin_family = AF_INET;
+	sin.sin_addr.s_addr = iph->daddr;
+	sin.sin_port = ports[1];
+	memset(sin.sin_zero, 0, sizeof(sin.sin_zero));
+
+	put_cmsg(msg, SOL_IP, IP_ORIGDSTADDR, sizeof(sin), &sin);
+}
 
 void ip_cmsg_recv(struct msghdr *msg, struct sk_buff *skb)
 {
@@ -136,34 +157,41 @@ void ip_cmsg_recv(struct msghdr *msg, struct sk_buff *skb)
 	/* Ordered by supposed usage frequency */
 	if (flags & 1)
 		ip_cmsg_recv_pktinfo(msg, skb);
-	if ((flags>>=1) == 0)
+	if ((flags >>= 1) == 0)
 		return;
 
 	if (flags & 1)
 		ip_cmsg_recv_ttl(msg, skb);
-	if ((flags>>=1) == 0)
+	if ((flags >>= 1) == 0)
 		return;
 
 	if (flags & 1)
 		ip_cmsg_recv_tos(msg, skb);
-	if ((flags>>=1) == 0)
+	if ((flags >>= 1) == 0)
 		return;
 
 	if (flags & 1)
 		ip_cmsg_recv_opts(msg, skb);
-	if ((flags>>=1) == 0)
+	if ((flags >>= 1) == 0)
 		return;
 
 	if (flags & 1)
 		ip_cmsg_recv_retopts(msg, skb);
-	if ((flags>>=1) == 0)
+	if ((flags >>= 1) == 0)
 		return;
 
 	if (flags & 1)
 		ip_cmsg_recv_security(msg, skb);
+
+	if ((flags >>= 1) == 0)
+		return;
+	if (flags & 1)
+		ip_cmsg_recv_dstaddr(msg, skb);
+
 }
+EXPORT_SYMBOL(ip_cmsg_recv);
 
-int ip_cmsg_send(struct msghdr *msg, struct ipcm_cookie *ipc)
+int ip_cmsg_send(struct net *net, struct msghdr *msg, struct ipcm_cookie *ipc)
 {
 	int err;
 	struct cmsghdr *cmsg;
@@ -176,7 +204,8 @@ int ip_cmsg_send(struct msghdr *msg, struct ipcm_cookie *ipc)
 		switch (cmsg->cmsg_type) {
 		case IP_RETOPTS:
 			err = cmsg->cmsg_len - CMSG_ALIGN(sizeof(struct cmsghdr));
-			err = ip_options_get(&ipc->opt, CMSG_DATA(cmsg), err < 40 ? err : 40);
+			err = ip_options_get(net, &ipc->opt, CMSG_DATA(cmsg),
+					     err < 40 ? err : 40);
 			if (err)
 				return err;
 			break;
@@ -211,7 +240,8 @@ int ip_cmsg_send(struct msghdr *msg, struct ipcm_cookie *ipc)
 struct ip_ra_chain *ip_ra_chain;
 DEFINE_RWLOCK(ip_ra_lock);
 
-int ip_ra_control(struct sock *sk, unsigned char on, void (*destructor)(struct sock *))
+int ip_ra_control(struct sock *sk, unsigned char on,
+		  void (*destructor)(struct sock *))
 {
 	struct ip_ra_chain *ra, *new_ra, **rap;
 
@@ -221,7 +251,7 @@ int ip_ra_control(struct sock *sk, unsigned char on, void (*destructor)(struct s
 	new_ra = on ? kmalloc(sizeof(*new_ra), GFP_KERNEL) : NULL;
 
 	write_lock_bh(&ip_ra_lock);
-	for (rap = &ip_ra_chain; (ra=*rap) != NULL; rap = &ra->next) {
+	for (rap = &ip_ra_chain; (ra = *rap) != NULL; rap = &ra->next) {
 		if (ra->sk == sk) {
 			if (on) {
 				write_unlock_bh(&ip_ra_lock);
@@ -253,8 +283,8 @@ int ip_ra_control(struct sock *sk, unsigned char on, void (*destructor)(struct s
 	return 0;
 }
 
-void ip_icmp_error(struct sock *sk, struct sk_buff *skb, int err, 
-		   u16 port, u32 info, u8 *payload)
+void ip_icmp_error(struct sock *sk, struct sk_buff *skb, int err,
+		   __be16 port, u32 info, u8 *payload)
 {
 	struct inet_sock *inet = inet_sk(sk);
 	struct sock_exterr_skb *serr;
@@ -266,21 +296,24 @@ void ip_icmp_error(struct sock *sk, struct sk_buff *skb, int err,
 	if (!skb)
 		return;
 
-	serr = SKB_EXT_ERR(skb);  
+	serr = SKB_EXT_ERR(skb);
 	serr->ee.ee_errno = err;
 	serr->ee.ee_origin = SO_EE_ORIGIN_ICMP;
-	serr->ee.ee_type = skb->h.icmph->type; 
-	serr->ee.ee_code = skb->h.icmph->code;
+	serr->ee.ee_type = icmp_hdr(skb)->type;
+	serr->ee.ee_code = icmp_hdr(skb)->code;
 	serr->ee.ee_pad = 0;
 	serr->ee.ee_info = info;
 	serr->ee.ee_data = 0;
-	serr->addr_offset = (u8*)&(((struct iphdr*)(skb->h.icmph+1))->daddr) - skb->nh.raw;
+	serr->addr_offset = (u8 *)&(((struct iphdr *)(icmp_hdr(skb) + 1))->daddr) -
+				   skb_network_header(skb);
 	serr->port = port;
 
-	skb->h.raw = payload;
-	if (!skb_pull(skb, payload - skb->data) ||
-	    sock_queue_err_skb(sk, skb))
-		kfree_skb(skb);
+	if (skb_pull(skb, payload - skb->data) != NULL) {
+		skb_reset_transport_header(skb);
+		if (sock_queue_err_skb(sk, skb) == 0)
+			return;
+	}
+	kfree_skb(skb);
 }
 
 void ip_local_error(struct sock *sk, int err, __be32 daddr, __be16 port, u32 info)
@@ -297,29 +330,30 @@ void ip_local_error(struct sock *sk, int err, __be32 daddr, __be16 port, u32 inf
 	if (!skb)
 		return;
 
-	iph = (struct iphdr*)skb_put(skb, sizeof(struct iphdr));
-	skb->nh.iph = iph;
+	skb_put(skb, sizeof(struct iphdr));
+	skb_reset_network_header(skb);
+	iph = ip_hdr(skb);
 	iph->daddr = daddr;
 
-	serr = SKB_EXT_ERR(skb);  
+	serr = SKB_EXT_ERR(skb);
 	serr->ee.ee_errno = err;
 	serr->ee.ee_origin = SO_EE_ORIGIN_LOCAL;
-	serr->ee.ee_type = 0; 
+	serr->ee.ee_type = 0;
 	serr->ee.ee_code = 0;
 	serr->ee.ee_pad = 0;
 	serr->ee.ee_info = info;
 	serr->ee.ee_data = 0;
-	serr->addr_offset = (u8*)&iph->daddr - skb->nh.raw;
+	serr->addr_offset = (u8 *)&iph->daddr - skb_network_header(skb);
 	serr->port = port;
 
-	skb->h.raw = skb->tail;
-	__skb_pull(skb, skb->tail - skb->data);
+	__skb_pull(skb, skb_tail_pointer(skb) - skb->data);
+	skb_reset_transport_header(skb);
 
 	if (sock_queue_err_skb(sk, skb))
 		kfree_skb(skb);
 }
 
-/* 
+/*
  *	Handle MSG_ERRQUEUE
  */
 int ip_recv_error(struct sock *sk, struct msghdr *msg, int len)
@@ -355,7 +389,8 @@ int ip_recv_error(struct sock *sk, struct msghdr *msg, int len)
 	sin = (struct sockaddr_in *)msg->msg_name;
 	if (sin) {
 		sin->sin_family = AF_INET;
-		sin->sin_addr.s_addr = *(u32*)(skb->nh.raw + serr->addr_offset);
+		sin->sin_addr.s_addr = *(__be32 *)(skb_network_header(skb) +
+						   serr->addr_offset);
 		sin->sin_port = serr->port;
 		memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
 	}
@@ -367,7 +402,7 @@ int ip_recv_error(struct sock *sk, struct msghdr *msg, int len)
 		struct inet_sock *inet = inet_sk(sk);
 
 		sin->sin_family = AF_INET;
-		sin->sin_addr.s_addr = skb->nh.iph->saddr;
+		sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
 		sin->sin_port = 0;
 		memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
 		if (inet->cmsg_flags)
@@ -384,14 +419,15 @@ int ip_recv_error(struct sock *sk, struct msghdr *msg, int len)
 	/* Reset and regenerate socket error */
 	spin_lock_bh(&sk->sk_error_queue.lock);
 	sk->sk_err = 0;
-	if ((skb2 = skb_peek(&sk->sk_error_queue)) != NULL) {
+	skb2 = skb_peek(&sk->sk_error_queue);
+	if (skb2 != NULL) {
 		sk->sk_err = SKB_EXT_ERR(skb2)->ee.ee_errno;
 		spin_unlock_bh(&sk->sk_error_queue.lock);
 		sk->sk_error_report(sk);
 	} else
 		spin_unlock_bh(&sk->sk_error_queue.lock);
 
-out_free_skb:	
+out_free_skb:
 	kfree_skb(skb);
 out:
 	return err;
@@ -399,25 +435,27 @@ out:
 
 
 /*
- *	Socket option code for IP. This is the end of the line after any TCP,UDP etc options on
- *	an IP socket.
+ *	Socket option code for IP. This is the end of the line after any
+ *	TCP,UDP etc options on an IP socket.
  */
 
 static int do_ip_setsockopt(struct sock *sk, int level,
-		int optname, char __user *optval, int optlen)
+			    int optname, char __user *optval, unsigned int optlen)
 {
 	struct inet_sock *inet = inet_sk(sk);
-	int val=0,err;
-
-	if (((1<<optname) & ((1<<IP_PKTINFO) | (1<<IP_RECVTTL) | 
-			    (1<<IP_RECVOPTS) | (1<<IP_RECVTOS) | 
-			    (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_PASSSEC))) ||
-				optname == IP_MULTICAST_TTL || 
-				optname == IP_MULTICAST_LOOP) { 
+	int val = 0, err;
+
+	if (((1<<optname) & ((1<<IP_PKTINFO) | (1<<IP_RECVTTL) |
+			     (1<<IP_RECVOPTS) | (1<<IP_RECVTOS) |
+			     (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_PASSSEC) | (1<<IP_TRANSPARENT))) ||
+	    optname == IP_MULTICAST_TTL ||
+	    optname == IP_MULTICAST_ALL ||
+	    optname == IP_MULTICAST_LOOP ||
+	    optname == IP_RECVORIGDSTADDR) {
 		if (optlen >= sizeof(int)) {
 			if (get_user(val, (int __user *) optval))
 				return -EFAULT;
@@ -432,453 +470,475 @@ static int do_ip_setsockopt(struct sock *sk, int level,
 
 	/* If optlen==0, it is equivalent to val == 0 */
 
-#ifdef CONFIG_IP_MROUTE
-	if (optname >= MRT_BASE && optname <= (MRT_BASE + 10))
-		return ip_mroute_setsockopt(sk,optname,optval,optlen);
-#endif
+	if (ip_mroute_opt(optname))
+		return ip_mroute_setsockopt(sk, optname, optval, optlen);
 
 	err = 0;
 	lock_sock(sk);
 
 	switch (optname) {
-		case IP_OPTIONS:
-		{
-			struct ip_options * opt = NULL;
-			if (optlen > 40 || optlen < 0)
-				goto e_inval;
-			err = ip_options_get_from_user(&opt, optval, optlen);
-			if (err)
-				break;
-			if (inet->is_icsk) {
-				struct inet_connection_sock *icsk = inet_csk(sk);
+	case IP_OPTIONS:
+	{
+		struct ip_options *opt = NULL;
+		if (optlen > 40 || optlen < 0)
+			goto e_inval;
+		err = ip_options_get_from_user(sock_net(sk), &opt,
+					       optval, optlen);
+		if (err)
+			break;
+		if (inet->is_icsk) {
+			struct inet_connection_sock *icsk = inet_csk(sk);
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-				if (sk->sk_family == PF_INET ||
-				    (!((1 << sk->sk_state) &
-				       (TCPF_LISTEN | TCPF_CLOSE)) &&
-				     inet->daddr != LOOPBACK4_IPV6)) {
+			if (sk->sk_family == PF_INET ||
+			    (!((1 << sk->sk_state) &
+			       (TCPF_LISTEN | TCPF_CLOSE)) &&
+			     inet->daddr != LOOPBACK4_IPV6)) {
 #endif
-					if (inet->opt)
-						icsk->icsk_ext_hdr_len -= inet->opt->optlen;
-					if (opt)
-						icsk->icsk_ext_hdr_len += opt->optlen;
-					icsk->icsk_sync_mss(sk, icsk->icsk_pmtu_cookie);
+				if (inet->opt)
+					icsk->icsk_ext_hdr_len -= inet->opt->optlen;
+				if (opt)
+					icsk->icsk_ext_hdr_len += opt->optlen;
+				icsk->icsk_sync_mss(sk, icsk->icsk_pmtu_cookie);
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-				}
-#endif
 			}
-			opt = xchg(&inet->opt, opt);
-			kfree(opt);
-			break;
+#endif
 		}
-		case IP_PKTINFO:
-			if (val)
-				inet->cmsg_flags |= IP_CMSG_PKTINFO;
-			else
-				inet->cmsg_flags &= ~IP_CMSG_PKTINFO;
-			break;
-		case IP_RECVTTL:
-			if (val)
-				inet->cmsg_flags |=  IP_CMSG_TTL;
-			else
-				inet->cmsg_flags &= ~IP_CMSG_TTL;
-			break;
-		case IP_RECVTOS:
-			if (val)
-				inet->cmsg_flags |=  IP_CMSG_TOS;
-			else
-				inet->cmsg_flags &= ~IP_CMSG_TOS;
-			break;
-		case IP_RECVOPTS:
-			if (val)
-				inet->cmsg_flags |=  IP_CMSG_RECVOPTS;
-			else
-				inet->cmsg_flags &= ~IP_CMSG_RECVOPTS;
-			break;
-		case IP_RETOPTS:
-			if (val)
-				inet->cmsg_flags |= IP_CMSG_RETOPTS;
-			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;
+		opt = xchg(&inet->opt, opt);
+		kfree(opt);
+		break;
+	}
+	case IP_PKTINFO:
+		if (val)
+			inet->cmsg_flags |= IP_CMSG_PKTINFO;
+		else
+			inet->cmsg_flags &= ~IP_CMSG_PKTINFO;
+		break;
+	case IP_RECVTTL:
+		if (val)
+			inet->cmsg_flags |=  IP_CMSG_TTL;
+		else
+			inet->cmsg_flags &= ~IP_CMSG_TTL;
+		break;
+	case IP_RECVTOS:
+		if (val)
+			inet->cmsg_flags |=  IP_CMSG_TOS;
+		else
+			inet->cmsg_flags &= ~IP_CMSG_TOS;
+		break;
+	case IP_RECVOPTS:
+		if (val)
+			inet->cmsg_flags |=  IP_CMSG_RECVOPTS;
+		else
+			inet->cmsg_flags &= ~IP_CMSG_RECVOPTS;
+		break;
+	case IP_RETOPTS:
+		if (val)
+			inet->cmsg_flags |= IP_CMSG_RETOPTS;
+		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_RECVORIGDSTADDR:
+		if (val)
+			inet->cmsg_flags |= IP_CMSG_ORIGDSTADDR;
+		else
+			inet->cmsg_flags &= ~IP_CMSG_ORIGDSTADDR;
+		break;
+	case IP_TOS:	/* This sets both TOS and Precedence */
+		if (sk->sk_type == SOCK_STREAM) {
+			val &= ~3;
+			val |= inet->tos & 3;
+		}
+		if (inet->tos != val) {
+			inet->tos = val;
+			sk->sk_priority = rt_tos2priority(val);
+			sk_dst_reset(sk);
+		}
+		break;
+	case IP_TTL:
+		if (optlen < 1)
+			goto e_inval;
+		if (val != -1 && (val < 0 || val > 255))
+			goto e_inval;
+		inet->uc_ttl = val;
+		break;
+	case IP_HDRINCL:
+		if (sk->sk_type != SOCK_RAW) {
+			err = -ENOPROTOOPT;
 			break;
-		case IP_TOS:	/* This sets both TOS and Precedence */
-			if (sk->sk_type == SOCK_STREAM) {
-				val &= ~3;
-				val |= inet->tos & 3;
-			}
-			if (IPTOS_PREC(val) >= IPTOS_PREC_CRITIC_ECP && 
-			    !capable(CAP_NET_ADMIN)) {
-				err = -EPERM;
+		}
+		inet->hdrincl = val ? 1 : 0;
+		break;
+	case IP_MTU_DISCOVER:
+		if (val < 0 || val > 3)
+			goto e_inval;
+		inet->pmtudisc = val;
+		break;
+	case IP_RECVERR:
+		inet->recverr = !!val;
+		if (!val)
+			skb_queue_purge(&sk->sk_error_queue);
+		break;
+	case IP_MULTICAST_TTL:
+		if (sk->sk_type == SOCK_STREAM)
+			goto e_inval;
+		if (optlen < 1)
+			goto e_inval;
+		if (val == -1)
+			val = 1;
+		if (val < 0 || val > 255)
+			goto e_inval;
+		inet->mc_ttl = val;
+		break;
+	case IP_MULTICAST_LOOP:
+		if (optlen < 1)
+			goto e_inval;
+		inet->mc_loop = !!val;
+		break;
+	case IP_MULTICAST_IF:
+	{
+		struct ip_mreqn mreq;
+		struct net_device *dev = NULL;
+
+		if (sk->sk_type == SOCK_STREAM)
+			goto e_inval;
+		/*
+		 *	Check the arguments are allowable
+		 */
+
+		if (optlen < sizeof(struct in_addr))
+			goto e_inval;
+
+		err = -EFAULT;
+		if (optlen >= sizeof(struct ip_mreqn)) {
+			if (copy_from_user(&mreq, optval, sizeof(mreq)))
 				break;
-			}
-			if (inet->tos != val) {
-				inet->tos = val;
-				sk->sk_priority = rt_tos2priority(val);
-				sk_dst_reset(sk); 
-			}
-			break;
-		case IP_TTL:
-			if (optlen<1)
-				goto e_inval;
-			if (val != -1 && (val < 1 || val>255))
-				goto e_inval;
-			inet->uc_ttl = val;
-			break;
-		case IP_HDRINCL:
-			if (sk->sk_type != SOCK_RAW) {
-				err = -ENOPROTOOPT;
+		} else {
+			memset(&mreq, 0, sizeof(mreq));
+			if (optlen >= sizeof(struct in_addr) &&
+			    copy_from_user(&mreq.imr_address, optval,
+					   sizeof(struct in_addr)))
+				break;
+		}
+
+		if (!mreq.imr_ifindex) {
+			if (mreq.imr_address.s_addr == htonl(INADDR_ANY)) {
+				inet->mc_index = 0;
+				inet->mc_addr  = 0;
+				err = 0;
 				break;
 			}
-			inet->hdrincl = val ? 1 : 0;
-			break;
-		case IP_MTU_DISCOVER:
-			if (val<0 || val>2)
-				goto e_inval;
-			inet->pmtudisc = val;
-			break;
-		case IP_RECVERR:
-			inet->recverr = !!val;
-			if (!val)
-				skb_queue_purge(&sk->sk_error_queue);
+			dev = ip_dev_find(sock_net(sk), mreq.imr_address.s_addr);
+			if (dev)
+				mreq.imr_ifindex = dev->ifindex;
+		} else
+			dev = dev_get_by_index(sock_net(sk), mreq.imr_ifindex);
+
+
+		err = -EADDRNOTAVAIL;
+		if (!dev)
 			break;
-		case IP_MULTICAST_TTL:
-			if (sk->sk_type == SOCK_STREAM)
-				goto e_inval;
-			if (optlen<1)
-				goto e_inval;
-			if (val==-1)
-				val = 1;
-			if (val < 0 || val > 255)
-				goto e_inval;
-			inet->mc_ttl = val;
-	                break;
-		case IP_MULTICAST_LOOP: 
-			if (optlen<1)
-				goto e_inval;
-			inet->mc_loop = !!val;
-	                break;
-		case IP_MULTICAST_IF: 
-		{
-			struct ip_mreqn mreq;
-			struct net_device *dev = NULL;
+		dev_put(dev);
 
-			if (sk->sk_type == SOCK_STREAM)
-				goto e_inval;
-			/*
-			 *	Check the arguments are allowable
-			 */
+		err = -EINVAL;
+		if (sk->sk_bound_dev_if &&
+		    mreq.imr_ifindex != sk->sk_bound_dev_if)
+			break;
 
-			err = -EFAULT;
-			if (optlen >= sizeof(struct ip_mreqn)) {
-				if (copy_from_user(&mreq,optval,sizeof(mreq)))
-					break;
-			} else {
-				memset(&mreq, 0, sizeof(mreq));
-				if (optlen >= sizeof(struct in_addr) &&
-				    copy_from_user(&mreq.imr_address,optval,sizeof(struct in_addr)))
-					break;
-			}
+		inet->mc_index = mreq.imr_ifindex;
+		inet->mc_addr  = mreq.imr_address.s_addr;
+		err = 0;
+		break;
+	}
 
-			if (!mreq.imr_ifindex) {
-				if (mreq.imr_address.s_addr == INADDR_ANY) {
-					inet->mc_index = 0;
-					inet->mc_addr  = 0;
-					err = 0;
-					break;
-				}
-				dev = ip_dev_find(mreq.imr_address.s_addr);
-				if (dev) {
-					mreq.imr_ifindex = dev->ifindex;
-					dev_put(dev);
-				}
-			} else
-				dev = __dev_get_by_index(mreq.imr_ifindex);
+	case IP_ADD_MEMBERSHIP:
+	case IP_DROP_MEMBERSHIP:
+	{
+		struct ip_mreqn mreq;
 
+		err = -EPROTO;
+		if (inet_sk(sk)->is_icsk)
+			break;
 
-			err = -EADDRNOTAVAIL;
-			if (!dev)
+		if (optlen < sizeof(struct ip_mreq))
+			goto e_inval;
+		err = -EFAULT;
+		if (optlen >= sizeof(struct ip_mreqn)) {
+			if (copy_from_user(&mreq, optval, sizeof(mreq)))
 				break;
-
-			err = -EINVAL;
-			if (sk->sk_bound_dev_if &&
-			    mreq.imr_ifindex != sk->sk_bound_dev_if)
+		} else {
+			memset(&mreq, 0, sizeof(mreq));
+			if (copy_from_user(&mreq, optval, sizeof(struct ip_mreq)))
 				break;
+		}
 
-			inet->mc_index = mreq.imr_ifindex;
-			inet->mc_addr  = mreq.imr_address.s_addr;
-			err = 0;
+		if (optname == IP_ADD_MEMBERSHIP)
+			err = ip_mc_join_group(sk, &mreq);
+		else
+			err = ip_mc_leave_group(sk, &mreq);
+		break;
+	}
+	case IP_MSFILTER:
+	{
+		struct ip_msfilter *msf;
+
+		if (optlen < IP_MSFILTER_SIZE(0))
+			goto e_inval;
+		if (optlen > sysctl_optmem_max) {
+			err = -ENOBUFS;
 			break;
 		}
+		msf = kmalloc(optlen, GFP_KERNEL);
+		if (!msf) {
+			err = -ENOBUFS;
+			break;
+		}
+		err = -EFAULT;
+		if (copy_from_user(msf, optval, optlen)) {
+			kfree(msf);
+			break;
+		}
+		/* numsrc >= (1G-4) overflow in 32 bits */
+		if (msf->imsf_numsrc >= 0x3ffffffcU ||
+		    msf->imsf_numsrc > sysctl_igmp_max_msf) {
+			kfree(msf);
+			err = -ENOBUFS;
+			break;
+		}
+		if (IP_MSFILTER_SIZE(msf->imsf_numsrc) > optlen) {
+			kfree(msf);
+			err = -EINVAL;
+			break;
+		}
+		err = ip_mc_msfilter(sk, msf, 0);
+		kfree(msf);
+		break;
+	}
+	case IP_BLOCK_SOURCE:
+	case IP_UNBLOCK_SOURCE:
+	case IP_ADD_SOURCE_MEMBERSHIP:
+	case IP_DROP_SOURCE_MEMBERSHIP:
+	{
+		struct ip_mreq_source mreqs;
+		int omode, add;
 
-		case IP_ADD_MEMBERSHIP:
-		case IP_DROP_MEMBERSHIP: 
-		{
-			struct ip_mreqn mreq;
-
-			if (optlen < sizeof(struct ip_mreq))
-				goto e_inval;
+		if (optlen != sizeof(struct ip_mreq_source))
+			goto e_inval;
+		if (copy_from_user(&mreqs, optval, sizeof(mreqs))) {
 			err = -EFAULT;
-			if (optlen >= sizeof(struct ip_mreqn)) {
-				if(copy_from_user(&mreq,optval,sizeof(mreq)))
-					break;
-			} else {
-				memset(&mreq, 0, sizeof(mreq));
-				if (copy_from_user(&mreq,optval,sizeof(struct ip_mreq)))
-					break; 
-			}
-
-			if (optname == IP_ADD_MEMBERSHIP)
-				err = ip_mc_join_group(sk, &mreq);
-			else
-				err = ip_mc_leave_group(sk, &mreq);
 			break;
 		}
-		case IP_MSFILTER:
-		{
-			extern int sysctl_igmp_max_msf;
-			struct ip_msfilter *msf;
+		if (optname == IP_BLOCK_SOURCE) {
+			omode = MCAST_EXCLUDE;
+			add = 1;
+		} else if (optname == IP_UNBLOCK_SOURCE) {
+			omode = MCAST_EXCLUDE;
+			add = 0;
+		} else if (optname == IP_ADD_SOURCE_MEMBERSHIP) {
+			struct ip_mreqn mreq;
 
-			if (optlen < IP_MSFILTER_SIZE(0))
-				goto e_inval;
-			if (optlen > sysctl_optmem_max) {
-				err = -ENOBUFS;
-				break;
-			}
-			msf = kmalloc(optlen, GFP_KERNEL);
-			if (msf == 0) {
-				err = -ENOBUFS;
+			mreq.imr_multiaddr.s_addr = mreqs.imr_multiaddr;
+			mreq.imr_address.s_addr = mreqs.imr_interface;
+			mreq.imr_ifindex = 0;
+			err = ip_mc_join_group(sk, &mreq);
+			if (err && err != -EADDRINUSE)
 				break;
-			}
+			omode = MCAST_INCLUDE;
+			add = 1;
+		} else /* IP_DROP_SOURCE_MEMBERSHIP */ {
+			omode = MCAST_INCLUDE;
+			add = 0;
+		}
+		err = ip_mc_source(add, omode, sk, &mreqs, 0);
+		break;
+	}
+	case MCAST_JOIN_GROUP:
+	case MCAST_LEAVE_GROUP:
+	{
+		struct group_req greq;
+		struct sockaddr_in *psin;
+		struct ip_mreqn mreq;
+
+		if (optlen < sizeof(struct group_req))
+			goto e_inval;
+		err = -EFAULT;
+		if (copy_from_user(&greq, optval, sizeof(greq)))
+			break;
+		psin = (struct sockaddr_in *)&greq.gr_group;
+		if (psin->sin_family != AF_INET)
+			goto e_inval;
+		memset(&mreq, 0, sizeof(mreq));
+		mreq.imr_multiaddr = psin->sin_addr;
+		mreq.imr_ifindex = greq.gr_interface;
+
+		if (optname == MCAST_JOIN_GROUP)
+			err = ip_mc_join_group(sk, &mreq);
+		else
+			err = ip_mc_leave_group(sk, &mreq);
+		break;
+	}
+	case MCAST_JOIN_SOURCE_GROUP:
+	case MCAST_LEAVE_SOURCE_GROUP:
+	case MCAST_BLOCK_SOURCE:
+	case MCAST_UNBLOCK_SOURCE:
+	{
+		struct group_source_req greqs;
+		struct ip_mreq_source mreqs;
+		struct sockaddr_in *psin;
+		int omode, add;
+
+		if (optlen != sizeof(struct group_source_req))
+			goto e_inval;
+		if (copy_from_user(&greqs, optval, sizeof(greqs))) {
 			err = -EFAULT;
-			if (copy_from_user(msf, optval, optlen)) {
-				kfree(msf);
-				break;
-			}
-			/* numsrc >= (1G-4) overflow in 32 bits */
-			if (msf->imsf_numsrc >= 0x3ffffffcU ||
-			    msf->imsf_numsrc > sysctl_igmp_max_msf) {
-				kfree(msf);
-				err = -ENOBUFS;
-				break;
-			}
-			if (IP_MSFILTER_SIZE(msf->imsf_numsrc) > optlen) {
-				kfree(msf);
-				err = -EINVAL;
-				break;
-			}
-			err = ip_mc_msfilter(sk, msf, 0);
-			kfree(msf);
 			break;
 		}
-		case IP_BLOCK_SOURCE:
-		case IP_UNBLOCK_SOURCE:
-		case IP_ADD_SOURCE_MEMBERSHIP:
-		case IP_DROP_SOURCE_MEMBERSHIP:
-		{
-			struct ip_mreq_source mreqs;
-			int omode, add;
-
-			if (optlen != sizeof(struct ip_mreq_source))
-				goto e_inval;
-			if (copy_from_user(&mreqs, optval, sizeof(mreqs))) {
-				err = -EFAULT;
-				break;
-			}
-			if (optname == IP_BLOCK_SOURCE) {
-				omode = MCAST_EXCLUDE;
-				add = 1;
-			} else if (optname == IP_UNBLOCK_SOURCE) {
-				omode = MCAST_EXCLUDE;
-				add = 0;
-			} else if (optname == IP_ADD_SOURCE_MEMBERSHIP) {
-				struct ip_mreqn mreq;
-
-				mreq.imr_multiaddr.s_addr = mreqs.imr_multiaddr;
-				mreq.imr_address.s_addr = mreqs.imr_interface;
-				mreq.imr_ifindex = 0;
-				err = ip_mc_join_group(sk, &mreq);
-				if (err && err != -EADDRINUSE)
-					break;
-				omode = MCAST_INCLUDE;
-				add = 1;
-			} else /* IP_DROP_SOURCE_MEMBERSHIP */ {
-				omode = MCAST_INCLUDE;
-				add = 0;
-			}
-			err = ip_mc_source(add, omode, sk, &mreqs, 0);
+		if (greqs.gsr_group.ss_family != AF_INET ||
+		    greqs.gsr_source.ss_family != AF_INET) {
+			err = -EADDRNOTAVAIL;
 			break;
 		}
-		case MCAST_JOIN_GROUP:
-		case MCAST_LEAVE_GROUP: 
-		{
-			struct group_req greq;
-			struct sockaddr_in *psin;
+		psin = (struct sockaddr_in *)&greqs.gsr_group;
+		mreqs.imr_multiaddr = psin->sin_addr.s_addr;
+		psin = (struct sockaddr_in *)&greqs.gsr_source;
+		mreqs.imr_sourceaddr = psin->sin_addr.s_addr;
+		mreqs.imr_interface = 0; /* use index for mc_source */
+
+		if (optname == MCAST_BLOCK_SOURCE) {
+			omode = MCAST_EXCLUDE;
+			add = 1;
+		} else if (optname == MCAST_UNBLOCK_SOURCE) {
+			omode = MCAST_EXCLUDE;
+			add = 0;
+		} else if (optname == MCAST_JOIN_SOURCE_GROUP) {
 			struct ip_mreqn mreq;
 
-			if (optlen < sizeof(struct group_req))
-				goto e_inval;
-			err = -EFAULT;
-			if(copy_from_user(&greq, optval, sizeof(greq)))
-				break;
-			psin = (struct sockaddr_in *)&greq.gr_group;
-			if (psin->sin_family != AF_INET)
-				goto e_inval;
-			memset(&mreq, 0, sizeof(mreq));
+			psin = (struct sockaddr_in *)&greqs.gsr_group;
 			mreq.imr_multiaddr = psin->sin_addr;
-			mreq.imr_ifindex = greq.gr_interface;
-
-			if (optname == MCAST_JOIN_GROUP)
-				err = ip_mc_join_group(sk, &mreq);
-			else
-				err = ip_mc_leave_group(sk, &mreq);
+			mreq.imr_address.s_addr = 0;
+			mreq.imr_ifindex = greqs.gsr_interface;
+			err = ip_mc_join_group(sk, &mreq);
+			if (err && err != -EADDRINUSE)
+				break;
+			greqs.gsr_interface = mreq.imr_ifindex;
+			omode = MCAST_INCLUDE;
+			add = 1;
+		} else /* MCAST_LEAVE_SOURCE_GROUP */ {
+			omode = MCAST_INCLUDE;
+			add = 0;
+		}
+		err = ip_mc_source(add, omode, sk, &mreqs,
+				   greqs.gsr_interface);
+		break;
+	}
+	case MCAST_MSFILTER:
+	{
+		struct sockaddr_in *psin;
+		struct ip_msfilter *msf = NULL;
+		struct group_filter *gsf = NULL;
+		int msize, i, ifindex;
+
+		if (optlen < GROUP_FILTER_SIZE(0))
+			goto e_inval;
+		if (optlen > sysctl_optmem_max) {
+			err = -ENOBUFS;
 			break;
 		}
-		case MCAST_JOIN_SOURCE_GROUP:
-		case MCAST_LEAVE_SOURCE_GROUP:
-		case MCAST_BLOCK_SOURCE:
-		case MCAST_UNBLOCK_SOURCE:
-		{
-			struct group_source_req greqs;
-			struct ip_mreq_source mreqs;
-			struct sockaddr_in *psin;
-			int omode, add;
-
-			if (optlen != sizeof(struct group_source_req))
-				goto e_inval;
-			if (copy_from_user(&greqs, optval, sizeof(greqs))) {
-				err = -EFAULT;
-				break;
-			}
-			if (greqs.gsr_group.ss_family != AF_INET ||
-			    greqs.gsr_source.ss_family != AF_INET) {
-				err = -EADDRNOTAVAIL;
-				break;
-			}
-			psin = (struct sockaddr_in *)&greqs.gsr_group;
-			mreqs.imr_multiaddr = psin->sin_addr.s_addr;
-			psin = (struct sockaddr_in *)&greqs.gsr_source;
-			mreqs.imr_sourceaddr = psin->sin_addr.s_addr;
-			mreqs.imr_interface = 0; /* use index for mc_source */
-
-			if (optname == MCAST_BLOCK_SOURCE) {
-				omode = MCAST_EXCLUDE;
-				add = 1;
-			} else if (optname == MCAST_UNBLOCK_SOURCE) {
-				omode = MCAST_EXCLUDE;
-				add = 0;
-			} else if (optname == MCAST_JOIN_SOURCE_GROUP) {
-				struct ip_mreqn mreq;
-
-				psin = (struct sockaddr_in *)&greqs.gsr_group;
-				mreq.imr_multiaddr = psin->sin_addr;
-				mreq.imr_address.s_addr = 0;
-				mreq.imr_ifindex = greqs.gsr_interface;
-				err = ip_mc_join_group(sk, &mreq);
-				if (err && err != -EADDRINUSE)
-					break;
-				greqs.gsr_interface = mreq.imr_ifindex;
-				omode = MCAST_INCLUDE;
-				add = 1;
-			} else /* MCAST_LEAVE_SOURCE_GROUP */ {
-				omode = MCAST_INCLUDE;
-				add = 0;
-			}
-			err = ip_mc_source(add, omode, sk, &mreqs,
-				greqs.gsr_interface);
+		gsf = kmalloc(optlen, GFP_KERNEL);
+		if (!gsf) {
+			err = -ENOBUFS;
 			break;
 		}
-		case MCAST_MSFILTER:
-		{
-			extern int sysctl_igmp_max_msf;
-			struct sockaddr_in *psin;
-			struct ip_msfilter *msf = NULL;
-			struct group_filter *gsf = NULL;
-			int msize, i, ifindex;
-
-			if (optlen < GROUP_FILTER_SIZE(0))
-				goto e_inval;
-			if (optlen > sysctl_optmem_max) {
-				err = -ENOBUFS;
-				break;
-			}
-			gsf = kmalloc(optlen,GFP_KERNEL);
-			if (gsf == 0) {
-				err = -ENOBUFS;
-				break;
-			}
-			err = -EFAULT;
-			if (copy_from_user(gsf, optval, optlen)) {
-				goto mc_msf_out;
-			}
-			/* numsrc >= (4G-140)/128 overflow in 32 bits */
-			if (gsf->gf_numsrc >= 0x1ffffff ||
-			    gsf->gf_numsrc > sysctl_igmp_max_msf) {
-				err = -ENOBUFS;
-				goto mc_msf_out;
-			}
-			if (GROUP_FILTER_SIZE(gsf->gf_numsrc) > optlen) {
-				err = -EINVAL;
-				goto mc_msf_out;
-			}
-			msize = IP_MSFILTER_SIZE(gsf->gf_numsrc);
-			msf = kmalloc(msize,GFP_KERNEL);
-			if (msf == 0) {
-				err = -ENOBUFS;
-				goto mc_msf_out;
-			}
-			ifindex = gsf->gf_interface;
-			psin = (struct sockaddr_in *)&gsf->gf_group;
-			if (psin->sin_family != AF_INET) {
-				err = -EADDRNOTAVAIL;
-				goto mc_msf_out;
-			}
-			msf->imsf_multiaddr = psin->sin_addr.s_addr;
-			msf->imsf_interface = 0;
-			msf->imsf_fmode = gsf->gf_fmode;
-			msf->imsf_numsrc = gsf->gf_numsrc;
+		err = -EFAULT;
+		if (copy_from_user(gsf, optval, optlen))
+			goto mc_msf_out;
+
+		/* numsrc >= (4G-140)/128 overflow in 32 bits */
+		if (gsf->gf_numsrc >= 0x1ffffff ||
+		    gsf->gf_numsrc > sysctl_igmp_max_msf) {
+			err = -ENOBUFS;
+			goto mc_msf_out;
+		}
+		if (GROUP_FILTER_SIZE(gsf->gf_numsrc) > optlen) {
+			err = -EINVAL;
+			goto mc_msf_out;
+		}
+		msize = IP_MSFILTER_SIZE(gsf->gf_numsrc);
+		msf = kmalloc(msize, GFP_KERNEL);
+		if (!msf) {
+			err = -ENOBUFS;
+			goto mc_msf_out;
+		}
+		ifindex = gsf->gf_interface;
+		psin = (struct sockaddr_in *)&gsf->gf_group;
+		if (psin->sin_family != AF_INET) {
 			err = -EADDRNOTAVAIL;
-			for (i=0; i<gsf->gf_numsrc; ++i) {
-				psin = (struct sockaddr_in *)&gsf->gf_slist[i];
+			goto mc_msf_out;
+		}
+		msf->imsf_multiaddr = psin->sin_addr.s_addr;
+		msf->imsf_interface = 0;
+		msf->imsf_fmode = gsf->gf_fmode;
+		msf->imsf_numsrc = gsf->gf_numsrc;
+		err = -EADDRNOTAVAIL;
+		for (i = 0; i < gsf->gf_numsrc; ++i) {
+			psin = (struct sockaddr_in *)&gsf->gf_slist[i];
 
-				if (psin->sin_family != AF_INET)
-					goto mc_msf_out;
-				msf->imsf_slist[i] = psin->sin_addr.s_addr;
-			}
-			kfree(gsf);
-			gsf = NULL;
+			if (psin->sin_family != AF_INET)
+				goto mc_msf_out;
+			msf->imsf_slist[i] = psin->sin_addr.s_addr;
+		}
+		kfree(gsf);
+		gsf = NULL;
 
-			err = ip_mc_msfilter(sk, msf, ifindex);
+		err = ip_mc_msfilter(sk, msf, ifindex);
 mc_msf_out:
-			kfree(msf);
-			kfree(gsf);
-			break;
-		}
-		case IP_ROUTER_ALERT:	
-			err = ip_ra_control(sk, val ? 1 : 0, NULL);
+		kfree(msf);
+		kfree(gsf);
+		break;
+	}
+	case IP_MULTICAST_ALL:
+		if (optlen < 1)
+			goto e_inval;
+		if (val != 0 && val != 1)
+			goto e_inval;
+		inet->mc_all = val;
+		break;
+	case IP_ROUTER_ALERT:
+		err = ip_ra_control(sk, val ? 1 : 0, NULL);
+		break;
+
+	case IP_FREEBIND:
+		if (optlen < 1)
+			goto e_inval;
+		inet->freebind = !!val;
+		break;
+
+	case IP_IPSEC_POLICY:
+	case IP_XFRM_POLICY:
+		err = -EPERM;
+		if (!capable(CAP_NET_ADMIN))
 			break;
+		err = xfrm_user_policy(sk, optname, optval, optlen);
+		break;
 
-		case IP_FREEBIND:
-			if (optlen<1)
-				goto e_inval;
-			inet->freebind = !!val; 
-	                break;			
- 
-		case IP_IPSEC_POLICY:
-		case IP_XFRM_POLICY:
+	case IP_TRANSPARENT:
+		if (!capable(CAP_NET_ADMIN)) {
 			err = -EPERM;
-			if (!capable(CAP_NET_ADMIN))
-				break;
-			err = xfrm_user_policy(sk, optname, optval, optlen);
-			break;
-
-		default:
-			err = -ENOPROTOOPT;
 			break;
+		}
+		if (optlen < 1)
+			goto e_inval;
+		inet->transparent = !!val;
+		break;
+
+	default:
+		err = -ENOPROTOOPT;
+		break;
 	}
 	release_sock(sk);
 	return err;
@@ -889,7 +949,7 @@ e_inval:
 }
 
 int ip_setsockopt(struct sock *sk, int level,
-		int optname, char __user *optval, int optlen)
+		int optname, char __user *optval, unsigned int optlen)
 {
 	int err;
 
@@ -900,11 +960,9 @@ int ip_setsockopt(struct sock *sk, int level,
 #ifdef CONFIG_NETFILTER
 	/* we need to exclude all possible ENOPROTOOPTs except default case */
 	if (err == -ENOPROTOOPT && optname != IP_HDRINCL &&
-		optname != IP_IPSEC_POLICY && optname != IP_XFRM_POLICY
-#ifdef CONFIG_IP_MROUTE
-		&& (optname < MRT_BASE || optname > (MRT_BASE + 10))
-#endif
-	   ) {
+			optname != IP_IPSEC_POLICY &&
+			optname != IP_XFRM_POLICY &&
+			!ip_mroute_opt(optname)) {
 		lock_sock(sk);
 		err = nf_setsockopt(sk, PF_INET, optname, optval, optlen);
 		release_sock(sk);
@@ -912,25 +970,28 @@ int ip_setsockopt(struct sock *sk, int level,
 #endif
 	return err;
 }
+EXPORT_SYMBOL(ip_setsockopt);
 
 #ifdef CONFIG_COMPAT
 int compat_ip_setsockopt(struct sock *sk, int level, int optname,
-			 char __user *optval, int optlen)
+			 char __user *optval, unsigned int optlen)
 {
 	int err;
 
 	if (level != SOL_IP)
 		return -ENOPROTOOPT;
 
+	if (optname >= MCAST_JOIN_GROUP && optname <= MCAST_MSFILTER)
+		return compat_mc_setsockopt(sk, level, optname, optval, optlen,
+			ip_setsockopt);
+
 	err = do_ip_setsockopt(sk, level, optname, optval, optlen);
 #ifdef CONFIG_NETFILTER
 	/* we need to exclude all possible ENOPROTOOPTs except default case */
 	if (err == -ENOPROTOOPT && optname != IP_HDRINCL &&
-	    optname != IP_IPSEC_POLICY && optname != IP_XFRM_POLICY
-#ifdef CONFIG_IP_MROUTE
-	    && (optname < MRT_BASE || optname > (MRT_BASE + 10))
-#endif
-	   ) {
+			optname != IP_IPSEC_POLICY &&
+			optname != IP_XFRM_POLICY &&
+			!ip_mroute_opt(optname)) {
 		lock_sock(sk);
 		err = compat_nf_setsockopt(sk, PF_INET, optname,
 					   optval, optlen);
@@ -939,238 +1000,240 @@ int compat_ip_setsockopt(struct sock *sk, int level, int optname,
 #endif
 	return err;
 }
-
 EXPORT_SYMBOL(compat_ip_setsockopt);
 #endif
 
 /*
- *	Get the options. Note for future reference. The GET of IP options gets the
- *	_received_ ones. The set sets the _sent_ ones.
+ *	Get the options. Note for future reference. The GET of IP options gets
+ *	the _received_ ones. The set sets the _sent_ ones.
  */
 
 static int do_ip_getsockopt(struct sock *sk, int level, int optname,
-		char __user *optval, int __user *optlen)
+			    char __user *optval, int __user *optlen)
 {
 	struct inet_sock *inet = inet_sk(sk);
 	int val;
 	int len;
-	
-	if(level!=SOL_IP)
+
+	if (level != SOL_IP)
 		return -EOPNOTSUPP;
 
-#ifdef CONFIG_IP_MROUTE
-	if(optname>=MRT_BASE && optname <=MRT_BASE+10)
-	{
-		return ip_mroute_getsockopt(sk,optname,optval,optlen);
-	}
-#endif
+	if (ip_mroute_opt(optname))
+		return ip_mroute_getsockopt(sk, optname, optval, optlen);
 
-	if(get_user(len,optlen))
+	if (get_user(len, optlen))
 		return -EFAULT;
-	if(len < 0)
+	if (len < 0)
 		return -EINVAL;
-		
+
 	lock_sock(sk);
 
-	switch(optname)	{
-		case IP_OPTIONS:
-			{
-				unsigned char optbuf[sizeof(struct ip_options)+40];
-				struct ip_options * opt = (struct ip_options*)optbuf;
-				opt->optlen = 0;
-				if (inet->opt)
-					memcpy(optbuf, inet->opt,
-					       sizeof(struct ip_options)+
-					       inet->opt->optlen);
-				release_sock(sk);
-
-				if (opt->optlen == 0) 
-					return put_user(0, optlen);
-
-				ip_options_undo(opt);
-
-				len = min_t(unsigned int, len, opt->optlen);
-				if(put_user(len, optlen))
-					return -EFAULT;
-				if(copy_to_user(optval, opt->__data, len))
-					return -EFAULT;
-				return 0;
-			}
-		case IP_PKTINFO:
-			val = (inet->cmsg_flags & IP_CMSG_PKTINFO) != 0;
-			break;
-		case IP_RECVTTL:
-			val = (inet->cmsg_flags & IP_CMSG_TTL) != 0;
-			break;
-		case IP_RECVTOS:
-			val = (inet->cmsg_flags & IP_CMSG_TOS) != 0;
-			break;
-		case IP_RECVOPTS:
-			val = (inet->cmsg_flags & IP_CMSG_RECVOPTS) != 0;
-			break;
-		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;
-		case IP_TTL:
-			val = (inet->uc_ttl == -1 ?
-			       sysctl_ip_default_ttl :
-			       inet->uc_ttl);
-			break;
-		case IP_HDRINCL:
-			val = inet->hdrincl;
-			break;
-		case IP_MTU_DISCOVER:
-			val = inet->pmtudisc;
-			break;
-		case IP_MTU:
-		{
-			struct dst_entry *dst;
-			val = 0;
-			dst = sk_dst_get(sk);
-			if (dst) {
-				val = dst_mtu(dst);
-				dst_release(dst);
-			}
-			if (!val) {
-				release_sock(sk);
-				return -ENOTCONN;
-			}
-			break;
+	switch (optname) {
+	case IP_OPTIONS:
+	{
+		unsigned char optbuf[sizeof(struct ip_options)+40];
+		struct ip_options * opt = (struct ip_options *)optbuf;
+		opt->optlen = 0;
+		if (inet->opt)
+			memcpy(optbuf, inet->opt,
+			       sizeof(struct ip_options)+
+			       inet->opt->optlen);
+		release_sock(sk);
+
+		if (opt->optlen == 0)
+			return put_user(0, optlen);
+
+		ip_options_undo(opt);
+
+		len = min_t(unsigned int, len, opt->optlen);
+		if (put_user(len, optlen))
+			return -EFAULT;
+		if (copy_to_user(optval, opt->__data, len))
+			return -EFAULT;
+		return 0;
+	}
+	case IP_PKTINFO:
+		val = (inet->cmsg_flags & IP_CMSG_PKTINFO) != 0;
+		break;
+	case IP_RECVTTL:
+		val = (inet->cmsg_flags & IP_CMSG_TTL) != 0;
+		break;
+	case IP_RECVTOS:
+		val = (inet->cmsg_flags & IP_CMSG_TOS) != 0;
+		break;
+	case IP_RECVOPTS:
+		val = (inet->cmsg_flags & IP_CMSG_RECVOPTS) != 0;
+		break;
+	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_RECVORIGDSTADDR:
+		val = (inet->cmsg_flags & IP_CMSG_ORIGDSTADDR) != 0;
+		break;
+	case IP_TOS:
+		val = inet->tos;
+		break;
+	case IP_TTL:
+		val = (inet->uc_ttl == -1 ?
+		       sysctl_ip_default_ttl :
+		       inet->uc_ttl);
+		break;
+	case IP_HDRINCL:
+		val = inet->hdrincl;
+		break;
+	case IP_MTU_DISCOVER:
+		val = inet->pmtudisc;
+		break;
+	case IP_MTU:
+	{
+		struct dst_entry *dst;
+		val = 0;
+		dst = sk_dst_get(sk);
+		if (dst) {
+			val = dst_mtu(dst);
+			dst_release(dst);
 		}
-		case IP_RECVERR:
-			val = inet->recverr;
-			break;
-		case IP_MULTICAST_TTL:
-			val = inet->mc_ttl;
-			break;
-		case IP_MULTICAST_LOOP:
-			val = inet->mc_loop;
-			break;
-		case IP_MULTICAST_IF:
-		{
-			struct in_addr addr;
-			len = min_t(unsigned int, len, sizeof(struct in_addr));
-			addr.s_addr = inet->mc_addr;
+		if (!val) {
 			release_sock(sk);
-
-  			if(put_user(len, optlen))
-  				return -EFAULT;
-			if(copy_to_user(optval, &addr, len))
-				return -EFAULT;
-			return 0;
+			return -ENOTCONN;
 		}
-		case IP_MSFILTER:
-		{
-			struct ip_msfilter msf;
-			int err;
+		break;
+	}
+	case IP_RECVERR:
+		val = inet->recverr;
+		break;
+	case IP_MULTICAST_TTL:
+		val = inet->mc_ttl;
+		break;
+	case IP_MULTICAST_LOOP:
+		val = inet->mc_loop;
+		break;
+	case IP_MULTICAST_IF:
+	{
+		struct in_addr addr;
+		len = min_t(unsigned int, len, sizeof(struct in_addr));
+		addr.s_addr = inet->mc_addr;
+		release_sock(sk);
 
-			if (len < IP_MSFILTER_SIZE(0)) {
-				release_sock(sk);
-				return -EINVAL;
-			}
-			if (copy_from_user(&msf, optval, IP_MSFILTER_SIZE(0))) {
-				release_sock(sk);
-				return -EFAULT;
-			}
-			err = ip_mc_msfget(sk, &msf,
-				(struct ip_msfilter __user *)optval, optlen);
+		if (put_user(len, optlen))
+			return -EFAULT;
+		if (copy_to_user(optval, &addr, len))
+			return -EFAULT;
+		return 0;
+	}
+	case IP_MSFILTER:
+	{
+		struct ip_msfilter msf;
+		int err;
+
+		if (len < IP_MSFILTER_SIZE(0)) {
 			release_sock(sk);
-			return err;
+			return -EINVAL;
 		}
-		case MCAST_MSFILTER:
-		{
-			struct group_filter gsf;
-			int err;
-
-			if (len < GROUP_FILTER_SIZE(0)) {
-				release_sock(sk);
-				return -EINVAL;
-			}
-			if (copy_from_user(&gsf, optval, GROUP_FILTER_SIZE(0))) {
-				release_sock(sk);
-				return -EFAULT;
-			}
-			err = ip_mc_gsfget(sk, &gsf,
-				(struct group_filter __user *)optval, optlen);
+		if (copy_from_user(&msf, optval, IP_MSFILTER_SIZE(0))) {
 			release_sock(sk);
-			return err;
+			return -EFAULT;
 		}
-		case IP_PKTOPTIONS:		
-		{
-			struct msghdr msg;
+		err = ip_mc_msfget(sk, &msf,
+				   (struct ip_msfilter __user *)optval, optlen);
+		release_sock(sk);
+		return err;
+	}
+	case MCAST_MSFILTER:
+	{
+		struct group_filter gsf;
+		int err;
 
+		if (len < GROUP_FILTER_SIZE(0)) {
+			release_sock(sk);
+			return -EINVAL;
+		}
+		if (copy_from_user(&gsf, optval, GROUP_FILTER_SIZE(0))) {
 			release_sock(sk);
+			return -EFAULT;
+		}
+		err = ip_mc_gsfget(sk, &gsf,
+				   (struct group_filter __user *)optval,
+				   optlen);
+		release_sock(sk);
+		return err;
+	}
+	case IP_MULTICAST_ALL:
+		val = inet->mc_all;
+		break;
+	case IP_PKTOPTIONS:
+	{
+		struct msghdr msg;
 
-			if (sk->sk_type != SOCK_STREAM)
-				return -ENOPROTOOPT;
+		release_sock(sk);
 
-			msg.msg_control = optval;
-			msg.msg_controllen = len;
-			msg.msg_flags = 0;
+		if (sk->sk_type != SOCK_STREAM)
+			return -ENOPROTOOPT;
 
-			if (inet->cmsg_flags & IP_CMSG_PKTINFO) {
-				struct in_pktinfo info;
+		msg.msg_control = optval;
+		msg.msg_controllen = len;
+		msg.msg_flags = 0;
 
-				info.ipi_addr.s_addr = inet->rcv_saddr;
-				info.ipi_spec_dst.s_addr = inet->rcv_saddr;
-				info.ipi_ifindex = inet->mc_index;
-				put_cmsg(&msg, SOL_IP, IP_PKTINFO, sizeof(info), &info);
-			}
-			if (inet->cmsg_flags & IP_CMSG_TTL) {
-				int hlim = inet->mc_ttl;
-				put_cmsg(&msg, SOL_IP, IP_TTL, sizeof(hlim), &hlim);
-			}
-			len -= msg.msg_controllen;
-			return put_user(len, optlen);
+		if (inet->cmsg_flags & IP_CMSG_PKTINFO) {
+			struct in_pktinfo info;
+
+			info.ipi_addr.s_addr = inet->rcv_saddr;
+			info.ipi_spec_dst.s_addr = inet->rcv_saddr;
+			info.ipi_ifindex = inet->mc_index;
+			put_cmsg(&msg, SOL_IP, IP_PKTINFO, sizeof(info), &info);
 		}
-		case IP_FREEBIND: 
-			val = inet->freebind; 
-			break; 
-		default:
-			release_sock(sk);
-			return -ENOPROTOOPT;
+		if (inet->cmsg_flags & IP_CMSG_TTL) {
+			int hlim = inet->mc_ttl;
+			put_cmsg(&msg, SOL_IP, IP_TTL, sizeof(hlim), &hlim);
+		}
+		len -= msg.msg_controllen;
+		return put_user(len, optlen);
+	}
+	case IP_FREEBIND:
+		val = inet->freebind;
+		break;
+	case IP_TRANSPARENT:
+		val = inet->transparent;
+		break;
+	default:
+		release_sock(sk);
+		return -ENOPROTOOPT;
 	}
 	release_sock(sk);
-	
-	if (len < sizeof(int) && len > 0 && val>=0 && val<255) {
+
+	if (len < sizeof(int) && len > 0 && val >= 0 && val <= 255) {
 		unsigned char ucval = (unsigned char)val;
 		len = 1;
-		if(put_user(len, optlen))
+		if (put_user(len, optlen))
 			return -EFAULT;
-		if(copy_to_user(optval,&ucval,1))
+		if (copy_to_user(optval, &ucval, 1))
 			return -EFAULT;
 	} else {
 		len = min_t(unsigned int, sizeof(int), len);
-		if(put_user(len, optlen))
+		if (put_user(len, optlen))
 			return -EFAULT;
-		if(copy_to_user(optval,&val,len))
+		if (copy_to_user(optval, &val, len))
 			return -EFAULT;
 	}
 	return 0;
 }
 
 int ip_getsockopt(struct sock *sk, int level,
-		int optname, char __user *optval, int __user *optlen)
+		  int optname, char __user *optval, int __user *optlen)
 {
 	int err;
 
 	err = do_ip_getsockopt(sk, level, optname, optval, optlen);
 #ifdef CONFIG_NETFILTER
 	/* we need to exclude all possible ENOPROTOOPTs except default case */
-	if (err == -ENOPROTOOPT && optname != IP_PKTOPTIONS
-#ifdef CONFIG_IP_MROUTE
-		&& (optname < MRT_BASE || optname > MRT_BASE+10)
-#endif
-	   ) {
-	   	int len;
+	if (err == -ENOPROTOOPT && optname != IP_PKTOPTIONS &&
+			!ip_mroute_opt(optname)) {
+		int len;
 
-		if(get_user(len,optlen))
+		if (get_user(len, optlen))
 			return -EFAULT;
 
 		lock_sock(sk);
@@ -1184,20 +1247,25 @@ int ip_getsockopt(struct sock *sk, int level,
 #endif
 	return err;
 }
+EXPORT_SYMBOL(ip_getsockopt);
 
 #ifdef CONFIG_COMPAT
 int compat_ip_getsockopt(struct sock *sk, int level, int optname,
 			 char __user *optval, int __user *optlen)
 {
-	int err = do_ip_getsockopt(sk, level, optname, optval, optlen);
+	int err;
+
+	if (optname == MCAST_MSFILTER)
+		return compat_mc_getsockopt(sk, level, optname, optval, optlen,
+			ip_getsockopt);
+
+	err = do_ip_getsockopt(sk, level, optname, optval, optlen);
+
 #ifdef CONFIG_NETFILTER
 	/* we need to exclude all possible ENOPROTOOPTs except default case */
-	if (err == -ENOPROTOOPT && optname != IP_PKTOPTIONS
-#ifdef CONFIG_IP_MROUTE
-	    && (optname < MRT_BASE || optname > MRT_BASE+10)
-#endif
-	   ) {
-	   	int len;
+	if (err == -ENOPROTOOPT && optname != IP_PKTOPTIONS &&
+			!ip_mroute_opt(optname)) {
+		int len;
 
 		if (get_user(len, optlen))
 			return -EFAULT;
@@ -1212,11 +1280,5 @@ int compat_ip_getsockopt(struct sock *sk, int level, int optname,
 #endif
 	return err;
 }
-
 EXPORT_SYMBOL(compat_ip_getsockopt);
 #endif
-
-EXPORT_SYMBOL(ip_cmsg_recv);
-
-EXPORT_SYMBOL(ip_getsockopt);
-EXPORT_SYMBOL(ip_setsockopt);