Move IP-specific identity information

out of struct sock.
Fix -EFAULT handling in TCP direct user copy handling.
Use struct initializers in IPV6 ndisc code.

drivers/net/pppoe.c

@@ -635,7 +635,7 @@ int pppoe_connect(struct socket *sock, struct sockaddr *uservaddr,
 		sk->state = PPPOX_CONNECTED;
 	}
 
-	sk->num = sp->sa_addr.pppoe.sid;
+	po->num = sp->sa_addr.pppoe.sid;
 
  end:
 	release_sock(sk);
@@ -788,7 +788,7 @@ int pppoe_sendmsg(struct socket *sock, struct msghdr *m,
 	hdr.ver = 1;
 	hdr.type = 1;
 	hdr.code = 0;
-	hdr.sid = sk->num;
+	hdr.sid = po->num;
 
 	lock_sock(sk);
 
@@ -862,7 +862,7 @@ int __pppoe_xmit(struct sock *sk, struct sk_buff *skb)
 	hdr.ver	= 1;
 	hdr.type = 1;
 	hdr.code = 0;
-	hdr.sid	= sk->num;
+	hdr.sid	= po->num;
 	hdr.length = htons(skb->len);
 
 	if (!dev)

include/linux/if_ec.h

@@ -53,6 +53,7 @@ struct econet_opt
   unsigned char port;
   unsigned char station;
   unsigned char net;
+  unsigned short num;
 };
 
 #define ec_sk(__sk) ((struct econet_opt *)(__sk)->protinfo)

include/linux/if_pppox.h

@@ -127,6 +127,7 @@ struct pppox_opt {
 	union {
 		struct pppoe_opt pppoe;
 	} proto;
+	unsigned short		num;
 };
 #define pppoe_dev	proto.pppoe.dev
 #define pppoe_pa	proto.pppoe.pa

include/linux/ip.h

@@ -116,17 +116,24 @@ struct ip_options {
 #define optlength(opt) (sizeof(struct ip_options) + opt->optlen)
 
 struct inet_opt {
+	/* Socket demultiplex comparisons on incoming packets. */
+	__u32			daddr;		/* Foreign IPv4 addr */
+	__u32			rcv_saddr;	/* Bound local IPv4 addr */
+	__u16			dport;		/* Destination port */
+	__u16			num;		/* Local port */
+	__u32			saddr;		/* Sending source */
 	int			ttl;		/* TTL setting */
 	int			tos;		/* TOS */
 	unsigned	   	cmsg_flags;
 	struct ip_options	*opt;
+	__u16			sport;		/* Source port */
 	unsigned char		hdrincl;	/* Include headers ? */
 	__u8			mc_ttl;		/* Multicasting TTL */
 	__u8			mc_loop;	/* Loopback */
+	__u8			pmtudisc;
+	__u16			id;		/* ID counter for DF pkts */
 	unsigned		recverr : 1,
 				freebind : 1;
-	__u16			id;		/* ID counter for DF pkts */
-	__u8			pmtudisc;
 	int			mc_index;	/* Multicast device index */
 	__u32			mc_addr;
 	struct ip_mc_socklist	*mc_list;	/* Group array */

include/net/ip.h

@@ -197,7 +197,8 @@ static inline void ip_select_ident(struct iphdr *iph, struct dst_entry *dst, str
 		 * does not change, they drop every other packet in
 		 * a TCP stream using header compression.
 		 */
-		iph->id = (sk && sk->daddr) ? htons(inet_sk(sk)->id++) : 0;
+		iph->id = (sk && inet_sk(sk)->daddr) ?
+					htons(inet_sk(sk)->id++) : 0;
 	} else
 		__ip_select_ident(iph, dst);
 }

include/net/sock.h

@@ -83,28 +83,22 @@ do {	spin_lock_init(&((__sk)->lock.slock)); \
 } while(0);
 
 struct sock {
-	/* Socket demultiplex comparisons on incoming packets. */
-	__u32			daddr;		/* Foreign IPv4 addr			*/
-	__u32			rcv_saddr;	/* Bound local IPv4 addr		*/
-	__u16			dport;		/* Destination port			*/
-	unsigned short		num;		/* Local port				*/
+	/* Begin of struct sock/struct tcp_tw_bucket shared layout */
+	volatile unsigned char	state,		/* Connection state */
+				zapped;		/* ax25 & ipx means !linked */
+	unsigned char		reuse;		/* SO_REUSEADDR setting */
+	unsigned char		shutdown;
 	int			bound_dev_if;	/* Bound device index if != 0 */
-
 	/* Main hash linkage for various protocol lookup tables. */
 	struct sock		*next;
 	struct sock		**pprev;
 	struct sock		*bind_next;
 	struct sock		**bind_pprev;
-
-	volatile unsigned char	state,		/* Connection state			*/
-				zapped;		/* In ax25 & ipx means not linked	*/
-	__u16			sport;		/* Source port				*/
-
-	unsigned short		family;		/* Address family			*/
-	unsigned char		reuse;		/* SO_REUSEADDR setting			*/
-	unsigned char		shutdown;
 	atomic_t		refcnt;		/* Reference count			*/
-
+	unsigned short		family;		/* Address family */
+	/* End of struct sock/struct tcp_tw_bucket shared layout */
+	unsigned char		use_write_queue;
+	unsigned char		userlocks;
 	socket_lock_t		lock;		/* Synchronizer...			*/
 	int			rcvbuf;		/* Size of receive buffer in bytes	*/
 
@@ -118,7 +112,6 @@ struct sock {
 	atomic_t		omem_alloc;	/* "o" is "option" or "other" */
 	int			wmem_queued;	/* Persistent queue size */
 	int			forward_alloc;	/* Space allocated forward. */
-	__u32			saddr;		/* Sending source			*/
 	unsigned int		allocation;	/* Allocation mode			*/
 	int			sndbuf;		/* Size of send buffer in bytes		*/
 	struct sock		*prev;
@@ -137,9 +130,7 @@ struct sock {
 				bsdism;
 	unsigned char		debug;
 	unsigned char		rcvtstamp;
-	unsigned char		use_write_queue;
-	unsigned char		userlocks;
-	/* Hole of 3 bytes. Try to pack. */
+	/* Hole of 1 byte. Try to pack. */
 	int			route_caps;
 	int			proc;
 	unsigned long	        lingertime;

include/net/tcp.h

@@ -53,7 +53,7 @@ struct tcp_ehash_bucket {
  *	2) If all sockets have sk->reuse set, and none of them are in
  *	   TCP_LISTEN state, the port may be shared.
  *	   Failing that, goto test 3.
- *	3) If all sockets are bound to a specific sk->rcv_saddr local
+ *	3) If all sockets are bound to a specific inet_sk(sk)->rcv_saddr local
  *	   address, and none of them are the same, the port may be
  *	   shared.
  *	   Failing this, the port cannot be shared.
@@ -162,23 +162,26 @@ struct tcp_tw_bucket {
 	 * XXX Yes I know this is gross, but I'd have to edit every single
 	 * XXX networking file if I created a "struct sock_header". -DaveM
 	 */
-	__u32			daddr;
-	__u32			rcv_saddr;
-	__u16			dport;
-	unsigned short		num;
+	volatile unsigned char	state,		/* Connection state	      */
+				substate;	/* "zapped" -> "substate"     */
+	unsigned char		reuse;		/* SO_REUSEADDR setting       */
+	unsigned char		rcv_wscale;	/* also TW bucket specific    */
 	int			bound_dev_if;
+	/* Main hash linkage for various protocol lookup tables. */
 	struct sock		*next;
 	struct sock		**pprev;
 	struct sock		*bind_next;
 	struct sock		**bind_pprev;
-	unsigned char		state,
-				substate; /* "zapped" is replaced with "substate" */
-	__u16			sport;
-	unsigned short		family;
-	unsigned char		reuse,
-				rcv_wscale; /* It is also TW bucket specific */
 	atomic_t		refcnt;
-
+	unsigned short		family;
+	/* End of struct sock/struct tcp_tw_bucket shared layout */
+	__u16			sport;
+	/* Socket demultiplex comparisons on incoming packets. */
+	/* these five are in inet_opt */
+	__u32			daddr;
+	__u32			rcv_saddr;
+	__u16			dport;
+	__u16			num;
 	/* And these are ours. */
 	int			hashent;
 	int			timeout;
@@ -236,20 +239,20 @@ extern void tcp_tw_deschedule(struct tcp_tw_bucket *tw);
 	__u64 __name = (((__u64)(__daddr))<<32)|((__u64)(__saddr));
 #endif /* __BIG_ENDIAN */
 #define TCP_IPV4_MATCH(__sk, __cookie, __saddr, __daddr, __ports, __dif)\
-	(((*((__u64 *)&((__sk)->daddr)))== (__cookie))	&&		\
-	 ((*((__u32 *)&((__sk)->dport)))== (__ports))   &&		\
+	(((*((__u64 *)&(inet_sk(__sk)->daddr)))== (__cookie))	&&	\
+	 ((*((__u32 *)&(inet_sk(__sk)->dport)))== (__ports))   &&	\
 	 (!((__sk)->bound_dev_if) || ((__sk)->bound_dev_if == (__dif))))
 #else /* 32-bit arch */
 #define TCP_V4_ADDR_COOKIE(__name, __saddr, __daddr)
 #define TCP_IPV4_MATCH(__sk, __cookie, __saddr, __daddr, __ports, __dif)\
-	(((__sk)->daddr			== (__saddr))	&&		\
-	 ((__sk)->rcv_saddr		== (__daddr))	&&		\
-	 ((*((__u32 *)&((__sk)->dport)))== (__ports))   &&		\
+	((inet_sk(__sk)->daddr			== (__saddr))	&&	\
+	 (inet_sk(__sk)->rcv_saddr		== (__daddr))	&&	\
+	 ((*((__u32 *)&(inet_sk(__sk)->dport)))== (__ports))	&&	\
 	 (!((__sk)->bound_dev_if) || ((__sk)->bound_dev_if == (__dif))))
 #endif /* 64-bit arch */
 
 #define TCP_IPV6_MATCH(__sk, __saddr, __daddr, __ports, __dif)	   \
-	(((*((__u32 *)&((__sk)->dport)))== (__ports))   	&& \
+	(((*((__u32 *)&(inet_sk(__sk)->dport)))== (__ports))   	&& \
 	 ((__sk)->family		== AF_INET6)		&& \
 	 !ipv6_addr_cmp(&inet6_sk(__sk)->daddr, (__saddr))	&& \
 	 !ipv6_addr_cmp(&inet6_sk(__sk)->rcv_saddr, (__daddr))	&& \
@@ -263,7 +266,7 @@ static __inline__ int tcp_lhashfn(unsigned short num)
 
 static __inline__ int tcp_sk_listen_hashfn(struct sock *sk)
 {
-	return tcp_lhashfn(sk->num);
+	return tcp_lhashfn(inet_sk(sk)->num);
 }
 
 #define MAX_TCP_HEADER	(128 + MAX_HEADER)

include/net/udp.h

@@ -23,6 +23,7 @@
 #define _UDP_H
 
 #include <linux/udp.h>
+#include <linux/ip.h>
 #include <net/sock.h>
 
 #define UDP_HTABLE_SIZE		128
@@ -41,7 +42,7 @@ static inline int udp_lport_inuse(u16 num)
 	struct sock *sk = udp_hash[num & (UDP_HTABLE_SIZE - 1)];
 
 	for(; sk != NULL; sk = sk->next) {
-		if(sk->num == num)
+		if (inet_sk(sk)->num == num)
 			return 1;
 	}
 	return 0;

net/econet/af_econet.c

@@ -554,7 +554,7 @@ static int econet_create(struct socket *sock, int protocol)
 	memset(eo, 0, sizeof(*eo));
 	sk->zapped=0;
 	sk->family = PF_ECONET;
-	sk->num = protocol;
+	eo->num = protocol;
 
 	sklist_insert_socket(&econet_sklist, sk);
 	return(0);

net/ipv4/af_inet.c

@@ -270,14 +270,15 @@ int inet_getsockopt(struct socket *sock, int level, int optname,
 
 static int inet_autobind(struct sock *sk)
 {
+	struct inet_opt *inet = inet_sk(sk);
 	/* We may need to bind the socket. */
 	lock_sock(sk);
-	if (sk->num == 0) {
+	if (!inet->num) {
 		if (sk->prot->get_port(sk, 0) != 0) {
 			release_sock(sk);
 			return -EAGAIN;
 		}
-		sk->sport = htons(sk->num);
+		inet->sport = htons(inet->num);
 	}
 	release_sock(sk);
 	return 0;
@@ -397,7 +398,7 @@ static int inet_create(struct socket *sock, int protocol)
 	inet = inet_sk(sk);
 
 	if (SOCK_RAW == sock->type) {
-		sk->num = protocol;
+		inet->num = protocol;
 		if (IPPROTO_RAW == protocol)
 			inet->hdrincl = 1;
 	}
@@ -430,13 +431,13 @@ static int inet_create(struct socket *sock, int protocol)
 	atomic_inc(&inet_sock_nr);
 #endif
 
-	if (sk->num) {
+	if (inet->num) {
 		/* It assumes that any protocol which allows
 		 * the user to assign a number at socket
 		 * creation time automatically
 		 * shares.
 		 */
-		sk->sport = htons(sk->num);
+		inet->sport = htons(inet->num);
 
 		/* Add to protocol hash chains. */
 		sk->prot->hash(sk);
@@ -551,28 +552,27 @@ static int inet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 
 	/* Check these errors (active socket, double bind). */
 	err = -EINVAL;
-	if ((sk->state != TCP_CLOSE)			||
-	    (sk->num != 0))
+	if (sk->state != TCP_CLOSE || inet->num)
 		goto out;
 
-	sk->rcv_saddr = sk->saddr = addr->sin_addr.s_addr;
+	inet->rcv_saddr = inet->saddr = addr->sin_addr.s_addr;
 	if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST)
-		sk->saddr = 0;  /* Use device */
+		inet->saddr = 0;  /* Use device */
 
 	/* Make sure we are allowed to bind here. */
 	if (sk->prot->get_port(sk, snum) != 0) {
-		sk->saddr = sk->rcv_saddr = 0;
+		inet->saddr = inet->rcv_saddr = 0;
 		err = -EADDRINUSE;
 		goto out;
 	}
 
-	if (sk->rcv_saddr)
+	if (inet->rcv_saddr)
 		sk->userlocks |= SOCK_BINDADDR_LOCK;
 	if (snum)
 		sk->userlocks |= SOCK_BINDPORT_LOCK;
-	sk->sport = htons(sk->num);
-	sk->daddr = 0;
-	sk->dport = 0;
+	inet->sport = htons(inet->num);
+	inet->daddr = 0;
+	inet->dport = 0;
 	sk_dst_reset(sk);
 	err = 0;
 out:
@@ -588,7 +588,7 @@ int inet_dgram_connect(struct socket *sock, struct sockaddr * uaddr,
 	if (uaddr->sa_family == AF_UNSPEC)
 		return sk->prot->disconnect(sk, flags);
 
-	if (sk->num==0 && inet_autobind(sk) != 0)
+	if (!inet_sk(sk)->num && inet_autobind(sk))
 		return -EAGAIN;
 	return sk->prot->connect(sk, (struct sockaddr *)uaddr, addr_len);
 }
@@ -627,6 +627,7 @@ int inet_stream_connect(struct socket *sock, struct sockaddr * uaddr,
 			int addr_len, int flags)
 {
 	struct sock *sk=sock->sk;
+	struct inet_opt *inet = inet_sk(sk);
 	int err;
 	long timeo;
 
@@ -655,10 +656,10 @@ int inet_stream_connect(struct socket *sock, struct sockaddr * uaddr,
 			goto out;
 
 		err = -EAGAIN;
-		if (sk->num == 0) {
+		if (!inet->num) {
 			if (sk->prot->get_port(sk, 0) != 0)
 				goto out;
-			sk->sport = htons(sk->num);
+			inet->sport = htons(inet->num);
 		}
 
 		err = sk->prot->connect(sk, uaddr, addr_len);
@@ -748,21 +749,22 @@ static int inet_getname(struct socket *sock, struct sockaddr *uaddr,
 		 int *uaddr_len, int peer)
 {
 	struct sock *sk		= sock->sk;
+	struct inet_opt *inet	= inet_sk(sk);
 	struct sockaddr_in *sin	= (struct sockaddr_in *)uaddr;
   
 	sin->sin_family = AF_INET;
 	if (peer) {
-		if (!sk->dport)
+		if (!inet->dport)
 			return -ENOTCONN;
 		if (((1<<sk->state)&(TCPF_CLOSE|TCPF_SYN_SENT)) && peer == 1)
 			return -ENOTCONN;
-		sin->sin_port = sk->dport;
-		sin->sin_addr.s_addr = sk->daddr;
+		sin->sin_port = inet->dport;
+		sin->sin_addr.s_addr = inet->daddr;
 	} else {
-		__u32 addr = sk->rcv_saddr;
+		__u32 addr = inet->rcv_saddr;
 		if (!addr)
-			addr = sk->saddr;
-		sin->sin_port = sk->sport;
+			addr = inet->saddr;
+		sin->sin_port = inet->sport;
 		sin->sin_addr.s_addr = addr;
 	}
 	*uaddr_len = sizeof(*sin);
@@ -792,7 +794,7 @@ int inet_sendmsg(struct socket *sock, struct msghdr *msg, int size,
 	struct sock *sk = sock->sk;
 
 	/* We may need to bind the socket. */
-	if (sk->num==0 && inet_autobind(sk) != 0)
+	if (!inet_sk(sk)->num && inet_autobind(sk))
 		return -EAGAIN;
 
 	return sk->prot->sendmsg(sk, msg, size);

net/ipv4/ip_input.c

@@ -166,7 +166,7 @@ int ip_call_ra_chain(struct sk_buff *skb)
 		/* If socket is bound to an interface, only report
 		 * the packet if it came  from that interface.
 		 */
-		if (sk && sk->num == protocol 
+		if (sk && inet_sk(sk)->num == protocol 
 		    && ((sk->bound_dev_if == 0) 
 			|| (sk->bound_dev_if == skb->dev->ifindex))) {
 			if (skb->nh.iph->frag_off & htons(IP_MF|IP_OFFSET)) {

net/ipv4/ip_output.c

@@ -360,7 +360,7 @@ int ip_queue_xmit(struct sk_buff *skb)
 		u32 daddr;
 
 		/* Use correct destination address if we have options. */
-		daddr = sk->daddr;
+		daddr = inet->daddr;
 		if(opt && opt->srr)
 			daddr = opt->faddr;
 
@@ -368,7 +368,7 @@ int ip_queue_xmit(struct sk_buff *skb)
 		 * keep trying until route appears or the connection times itself
 		 * out.
 		 */
-		if (ip_route_output(&rt, daddr, sk->saddr,
+		if (ip_route_output(&rt, daddr, inet->saddr,
 				    RT_CONN_FLAGS(sk),
 				    sk->bound_dev_if))
 			goto no_route;
@@ -395,7 +395,7 @@ int ip_queue_xmit(struct sk_buff *skb)
 
 	if(opt && opt->optlen) {
 		iph->ihl += opt->optlen >> 2;
-		ip_options_build(skb, opt, sk->daddr, rt, 0);
+		ip_options_build(skb, opt, inet->daddr, rt, 0);
 	}
 
 	return NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, skb, NULL, rt->u.dst.dev,
@@ -471,7 +471,7 @@ static int ip_build_xmit_slow(struct sock *sk,
 	}
 
 	if (length + fragheaderlen > 0xFFFF) {
-		ip_local_error(sk, EMSGSIZE, rt->rt_dst, sk->dport, mtu);
+		ip_local_error(sk, EMSGSIZE, rt->rt_dst, inet->dport, mtu);
 		return -EMSGSIZE;
 	}
 
@@ -503,7 +503,7 @@ static int ip_build_xmit_slow(struct sock *sk,
 	 */
 
 	if (offset > 0 && inet->pmtudisc == IP_PMTUDISC_DO) { 
-		ip_local_error(sk, EMSGSIZE, rt->rt_dst, sk->dport, mtu);
+		ip_local_error(sk, EMSGSIZE, rt->rt_dst, inet->dport, mtu);
  		return -EMSGSIZE;
 	}
 	if (flags&MSG_PROBE)
@@ -659,7 +659,8 @@ int ip_build_xmit(struct sock *sk,
 			return ip_build_xmit_slow(sk,getfrag,frag,length,ipc,rt,flags); 
 	} else {
 		if (length > rt->u.dst.dev->mtu) {
-			ip_local_error(sk, EMSGSIZE, rt->rt_dst, sk->dport, rt->u.dst.dev->mtu);
+			ip_local_error(sk, EMSGSIZE, rt->rt_dst, inet->dport,
+				       rt->u.dst.dev->mtu);
 			return -EMSGSIZE;
 		}
 	}

net/ipv4/ip_sockglue.c

@@ -193,7 +193,7 @@ int ip_ra_control(struct sock *sk, unsigned char on, void (*destructor)(struct s
 {
 	struct ip_ra_chain *ra, *new_ra, **rap;
 
-	if (sk->type != SOCK_RAW || sk->num == IPPROTO_RAW)
+	if (sk->type != SOCK_RAW || inet_sk(sk)->num == IPPROTO_RAW)
 		return -EINVAL;
 
 	new_ra = on ? kmalloc(sizeof(*new_ra), GFP_KERNEL) : NULL;
@@ -435,7 +435,7 @@ int ip_setsockopt(struct sock *sk, int level, int optname, char *optval, int opt
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
 				if (sk->family == PF_INET ||
 				    (!((1<<sk->state)&(TCPF_LISTEN|TCPF_CLOSE))
-				     && sk->daddr != LOOPBACK4_IPV6)) {
+				     && inet->daddr != LOOPBACK4_IPV6)) {
 #endif
 					if (opt)
 						tp->ext_header_len = opt->optlen;
@@ -771,8 +771,8 @@ int ip_getsockopt(struct sock *sk, int level, int optname, char *optval, int *op
 			if (inet->cmsg_flags & IP_CMSG_PKTINFO) {
 				struct in_pktinfo info;
 
-				info.ipi_addr.s_addr = sk->rcv_saddr;
-				info.ipi_spec_dst.s_addr = sk->rcv_saddr;
+				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);
 			}

net/ipv4/netfilter/ip_conntrack_core.c

@@ -969,9 +969,12 @@ ip_ct_selective_cleanup(int (*kill)(const struct ip_conntrack *i, void *data),
 static int
 getorigdst(struct sock *sk, int optval, void *user, int *len)
 {
+	struct inet_opt *inet = inet_sk(sk);
 	struct ip_conntrack_tuple_hash *h;
-	struct ip_conntrack_tuple tuple = { { sk->rcv_saddr, { sk->sport } },
-					    { sk->daddr, { sk->dport },
+	struct ip_conntrack_tuple tuple = { { inet->rcv_saddr,
+						{ inet->sport } },
+					    { inet->daddr,
+						{ inet->dport },
 					      IPPROTO_TCP } };
 
 	/* We only do TCP at the moment: is there a better way? */

net/ipv4/raw.c

@@ -70,7 +70,8 @@ rwlock_t raw_v4_lock = RW_LOCK_UNLOCKED;
 
 static void raw_v4_hash(struct sock *sk)
 {
-	struct sock **skp = &raw_v4_htable[sk->num & (RAWV4_HTABLE_SIZE - 1)];
+	struct sock **skp = &raw_v4_htable[inet_sk(sk)->num &
+					   (RAWV4_HTABLE_SIZE - 1)];
 
 	write_lock_bh(&raw_v4_lock);
 	if ((sk->next = *skp) != NULL)
@@ -103,9 +104,11 @@ struct sock *__raw_v4_lookup(struct sock *sk, unsigned short num,
 	struct sock *s = sk;
 
 	for (s = sk; s; s = s->next) {
-		if (s->num == num 				&&
-		    !(s->daddr && s->daddr != raddr) 		&&
-		    !(s->rcv_saddr && s->rcv_saddr != laddr)	&&
+		struct inet_opt *inet = inet_sk(s);
+
+		if (inet->num == num 					&&
+		    !(inet->daddr && inet->daddr != raddr) 		&&
+		    !(inet->rcv_saddr && inet->rcv_saddr != laddr)	&&
 		    !(s->bound_dev_if && s->bound_dev_if != dif))
 			break; /* gotcha */
 	}
@@ -364,10 +367,10 @@ static int raw_sendmsg(struct sock *sk, struct msghdr *msg, int len)
 		err = -EINVAL;
 		if (sk->state != TCP_ESTABLISHED) 
 			goto out;
-		daddr = sk->daddr;
+		daddr = inet->daddr;
 	}
 
-	ipc.addr = sk->saddr;
+	ipc.addr = inet->saddr;
 	ipc.opt = NULL;
 	ipc.oif = sk->bound_dev_if;
 
@@ -458,6 +461,7 @@ static void raw_close(struct sock *sk, long timeout)
 /* This gets rid of all the nasties in af_inet. -DaveM */
 static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 {
+	struct inet_opt *inet = inet_sk(sk);
 	struct sockaddr_in *addr = (struct sockaddr_in *) uaddr;
 	int ret = -EINVAL;
 	int chk_addr_ret;
@@ -469,9 +473,9 @@ static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 	if (addr->sin_addr.s_addr && chk_addr_ret != RTN_LOCAL &&
 	    chk_addr_ret != RTN_MULTICAST && chk_addr_ret != RTN_BROADCAST)
 		goto out;
-	sk->rcv_saddr = sk->saddr = addr->sin_addr.s_addr;
+	inet->rcv_saddr = inet->saddr = addr->sin_addr.s_addr;
 	if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST)
-		sk->saddr = 0;  /* Use device */
+		inet->saddr = 0;  /* Use device */
 	sk_dst_reset(sk);
 	ret = 0;
 out:	return ret;
@@ -534,7 +538,7 @@ out:	return err ? : copied;
 static int raw_init(struct sock *sk)
 {
 	struct raw_opt *tp = raw4_sk(sk);
-	if (sk->num == IPPROTO_ICMP)
+	if (inet_sk(sk)->num == IPPROTO_ICMP)
 		memset(&tp->filter, 0, sizeof(tp->filter));
 	return 0;
 }
@@ -574,7 +578,7 @@ static int raw_setsockopt(struct sock *sk, int level, int optname,
 		return ip_setsockopt(sk, level, optname, optval, optlen);
 
 	if (optname == ICMP_FILTER) {
-		if (sk->num != IPPROTO_ICMP)
+		if (inet_sk(sk)->num != IPPROTO_ICMP)
 			return -EOPNOTSUPP;
 		else
 			return raw_seticmpfilter(sk, optval, optlen);
@@ -589,7 +593,7 @@ static int raw_getsockopt(struct sock *sk, int level, int optname,
 		return ip_getsockopt(sk, level, optname, optval, optlen);
 
 	if (optname == ICMP_FILTER) {
-		if (sk->num != IPPROTO_ICMP)
+		if (inet_sk(sk)->num != IPPROTO_ICMP)
 			return -EOPNOTSUPP;
 		else
 			return raw_geticmpfilter(sk, optval, optlen);
@@ -627,10 +631,11 @@ static int raw_ioctl(struct sock *sk, int cmd, unsigned long arg)
 
 static void get_raw_sock(struct sock *sp, char *tmpbuf, int i)
 {
-	unsigned int dest = sp->daddr,
-		     src = sp->rcv_saddr;
+	struct inet_opt *inet = inet_sk(sp);
+	unsigned int dest = inet->daddr,
+		     src = inet->rcv_saddr;
 	__u16 destp = 0,
-	      srcp  = sp->num;
+	      srcp  = inet->num;
 
 	sprintf(tmpbuf, "%4d: %08X:%04X %08X:%04X"
 		" %02X %08X:%08X %02X:%08lX %08X %5d %8d %ld %d %p",

net/ipv4/tcp.c

@@ -524,6 +524,7 @@ int tcp_ioctl(struct sock *sk, int cmd, unsigned long arg)
 
 int tcp_listen_start(struct sock *sk)
 {
+	struct inet_opt *inet = inet_sk(sk);
 	struct tcp_opt *tp = tcp_sk(sk);
 	struct tcp_listen_opt *lopt;
 
@@ -552,8 +553,8 @@ int tcp_listen_start(struct sock *sk)
 	 * after validation is complete.
 	 */
 	sk->state = TCP_LISTEN;
-	if (sk->prot->get_port(sk, sk->num) == 0) {
-		sk->sport = htons(sk->num);
+	if (!sk->prot->get_port(sk, inet->num)) {
+		inet->sport = htons(inet->num);
 
 		sk_dst_reset(sk);
 		sk->prot->hash(sk);
@@ -1786,8 +1787,8 @@ void tcp_destroy_sock(struct sock *sk)
 	/* It cannot be in hash table! */
 	BUG_TRAP(sk->pprev==NULL);
 
-	/* If it has not 0 sk->num, it must be bound */
-	BUG_TRAP(!sk->num || sk->prev!=NULL);
+	/* If it has not 0 inet_sk(sk)->num, it must be bound */
+	BUG_TRAP(!inet_sk(sk)->num || sk->prev);
 
 #ifdef TCP_DEBUG
 	if (sk->zapped) {
@@ -1988,6 +1989,7 @@ extern __inline__ int tcp_need_reset(int state)
 
 int tcp_disconnect(struct sock *sk, int flags)
 {
+	struct inet_opt *inet = inet_sk(sk);
 	struct tcp_opt *tp = tcp_sk(sk);
 	int old_state;
 	int err = 0;
@@ -2015,11 +2017,10 @@ int tcp_disconnect(struct sock *sk, int flags)
   	tcp_writequeue_purge(sk);
   	__skb_queue_purge(&tp->out_of_order_queue);
 
-	sk->dport = 0;
+	inet->dport = 0;
 
 	if (!(sk->userlocks&SOCK_BINDADDR_LOCK)) {
-		sk->rcv_saddr = 0;
-		sk->saddr = 0;
+		inet->rcv_saddr = inet->saddr = 0;
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
 		if (sk->family == PF_INET6) {
 			struct ipv6_pinfo *np = inet6_sk(sk);
@@ -2049,7 +2050,7 @@ int tcp_disconnect(struct sock *sk, int flags)
 	tcp_sack_reset(tp);
 	__sk_dst_reset(sk);
 
-	BUG_TRAP(!sk->num || sk->prev);
+	BUG_TRAP(!inet->num || sk->prev);
 
 	sk->error_report(sk);
 	return err;

net/ipv4/tcp_diag.c

@@ -44,6 +44,7 @@ static struct sock *tcpnl;
 static int tcpdiag_fill(struct sk_buff *skb, struct sock *sk,
 			int ext, u32 pid, u32 seq)
 {
+	struct inet_opt *inet = inet_sk(sk);
 	struct tcp_opt *tp = tcp_sk(sk);
 	struct tcpdiagmsg *r;
 	struct nlmsghdr  *nlh;
@@ -64,10 +65,6 @@ static int tcpdiag_fill(struct sk_buff *skb, struct sock *sk,
 	r->tcpdiag_timer = 0;
 	r->tcpdiag_retrans = 0;
 
-	r->id.tcpdiag_sport = sk->sport;
-	r->id.tcpdiag_dport = sk->dport;
-	r->id.tcpdiag_src[0] = sk->rcv_saddr;
-	r->id.tcpdiag_dst[0] = sk->daddr;
 	r->id.tcpdiag_if = sk->bound_dev_if;
 	*((struct sock **)&r->id.tcpdiag_cookie) = sk;
 
@@ -77,6 +74,10 @@ static int tcpdiag_fill(struct sk_buff *skb, struct sock *sk,
 		if (tmo < 0)
 			tmo = 0;
 
+		r->id.tcpdiag_sport = tw->sport;
+		r->id.tcpdiag_dport = tw->dport;
+		r->id.tcpdiag_src[0] = tw->rcv_saddr;
+		r->id.tcpdiag_dst[0] = tw->daddr;
 		r->tcpdiag_state = tw->substate;
 		r->tcpdiag_timer = 3;
 		r->tcpdiag_expires = (tmo*1000+HZ-1)/HZ;
@@ -94,6 +95,11 @@ static int tcpdiag_fill(struct sk_buff *skb, struct sock *sk,
 		return skb->len;
 	}
 
+	r->id.tcpdiag_sport = inet->sport;
+	r->id.tcpdiag_dport = inet->dport;
+	r->id.tcpdiag_src[0] = inet->rcv_saddr;
+	r->id.tcpdiag_dst[0] = inet->daddr;
+
 #ifdef CONFIG_IPV6
 	if (r->tcpdiag_family == AF_INET6) {
 		struct ipv6_pinfo *np = inet6_sk(sk);
@@ -291,6 +297,7 @@ int tcpdiag_bc_run(char *bc, int len, struct sock *sk)
 {
 	while (len > 0) {
 		int yes = 1;
+		struct inet_opt *inet = inet_sk(sk);
 		struct tcpdiag_bc_op *op = (struct tcpdiag_bc_op*)bc;
 
 		switch (op->code) {
@@ -300,16 +307,16 @@ int tcpdiag_bc_run(char *bc, int len, struct sock *sk)
 			yes = 0;
 			break;
 		case TCPDIAG_BC_S_GE:
-			yes = (sk->num >= op[1].no);
+			yes = inet->num >= op[1].no;
 			break;
 		case TCPDIAG_BC_S_LE:
-			yes = (sk->num <= op[1].no);
+			yes = inet->num <= op[1].no;
 			break;
 		case TCPDIAG_BC_D_GE:
-			yes = (ntohs(sk->dport) >= op[1].no);
+			yes = ntohs(inet->dport) >= op[1].no;
 			break;
 		case TCPDIAG_BC_D_LE:
-			yes = (ntohs(sk->dport) <= op[1].no);
+			yes = ntohs(inet->dport) <= op[1].no;
 			break;
 		case TCPDIAG_BC_AUTO:
 			yes = !(sk->userlocks&SOCK_BINDPORT_LOCK);
@@ -321,7 +328,8 @@ int tcpdiag_bc_run(char *bc, int len, struct sock *sk)
 			u32 *addr;
 
 			if (cond->port != -1 &&
-			    cond->port != (op->code == TCPDIAG_BC_S_COND ? sk->num : ntohs(sk->dport))) {
+			    cond->port != (op->code == TCPDIAG_BC_S_COND ?
+					     inet->num : ntohs(inet->dport))) {
 				yes = 0;
 				break;
 			}
@@ -341,9 +349,9 @@ int tcpdiag_bc_run(char *bc, int len, struct sock *sk)
 #endif
 			{
 				if (op->code == TCPDIAG_BC_S_COND)
-					addr = &sk->rcv_saddr;
+					addr = &inet->rcv_saddr;
 				else
-					addr = &sk->daddr;
+					addr = &inet->daddr;
 			}
 
 			if (bitstring_match(addr, cond->addr, cond->prefix_len))
@@ -453,12 +461,14 @@ int tcpdiag_dump(struct sk_buff *skb, struct netlink_callback *cb)
 			for (sk = tcp_listening_hash[i], num = 0;
 			     sk != NULL;
 			     sk = sk->next, num++) {
+				struct inet_opt *inet = inet_sk(sk);
 				if (num < s_num)
 					continue;
 				if (!(r->tcpdiag_states&TCPF_LISTEN) ||
 				    r->id.tcpdiag_dport)
 					continue;
-				if (r->id.tcpdiag_sport != sk->sport && r->id.tcpdiag_sport)
+				if (r->id.tcpdiag_sport != inet->sport &&
+				    r->id.tcpdiag_sport)
 					continue;
 				if (bc && !tcpdiag_bc_run(RTA_DATA(bc), RTA_PAYLOAD(bc), sk))
 					continue;
@@ -491,13 +501,16 @@ int tcpdiag_dump(struct sk_buff *skb, struct netlink_callback *cb)
 		for (sk = head->chain, num = 0;
 		     sk != NULL;
 		     sk = sk->next, num++) {
+			struct inet_opt *inet = inet_sk(sk);
+
 			if (num < s_num)
 				continue;
 			if (!(r->tcpdiag_states&(1<<sk->state)))
 				continue;
-			if (r->id.tcpdiag_sport != sk->sport && r->id.tcpdiag_sport)
+			if (r->id.tcpdiag_sport != inet->sport &&
+			    r->id.tcpdiag_sport)
 				continue;
-			if (r->id.tcpdiag_dport != sk->dport && r->id.tcpdiag_dport)
+			if (r->id.tcpdiag_dport != inet->dport && r->id.tcpdiag_dport)
 				continue;
 			if (bc && !tcpdiag_bc_run(RTA_DATA(bc), RTA_PAYLOAD(bc), sk))
 				continue;
@@ -513,13 +526,17 @@ int tcpdiag_dump(struct sk_buff *skb, struct netlink_callback *cb)
 			for (sk = tcp_ehash[i+tcp_ehash_size].chain;
 			     sk != NULL;
 			     sk = sk->next, num++) {
+				struct inet_opt *inet = inet_sk(sk);
+
 				if (num < s_num)
 					continue;
 				if (!(r->tcpdiag_states&(1<<sk->zapped)))
 					continue;
-				if (r->id.tcpdiag_sport != sk->sport && r->id.tcpdiag_sport)
+				if (r->id.tcpdiag_sport != inet->sport &&
+				    r->id.tcpdiag_sport)
 					continue;
-				if (r->id.tcpdiag_dport != sk->dport && r->id.tcpdiag_dport)
+				if (r->id.tcpdiag_dport != inet->dport &&
+				    r->id.tcpdiag_dport)
 					continue;
 				if (bc && !tcpdiag_bc_run(RTA_DATA(bc), RTA_PAYLOAD(bc), sk))
 					continue;

net/ipv4/tcp_input.c

@@ -1329,9 +1329,10 @@ static __inline__ int tcp_packet_delayed(struct tcp_opt *tp)
 #if FASTRETRANS_DEBUG > 1
 static void DBGUNDO(struct sock *sk, struct tcp_opt *tp, const char *msg)
 {
+	struct inet_opt *inet = inet_sk(sk);
 	printk(KERN_DEBUG "Undo %s %u.%u.%u.%u/%u c%u l%u ss%u/%u p%u\n",
 	       msg,
-	       NIPQUAD(sk->daddr), ntohs(sk->dport),
+	       NIPQUAD(inet->daddr), ntohs(inet->dport),
 	       tp->snd_cwnd, tp->left_out,
 	       tp->snd_ssthresh, tp->prior_ssthresh, tp->packets_out);
 }
@@ -2570,16 +2571,13 @@ static void tcp_data_queue(struct sock *sk, struct sk_buff *skb)
 			__set_current_state(TASK_RUNNING);
 
 			local_bh_enable();
-			if (skb_copy_datagram_iovec(skb, 0, tp->ucopy.iov,
-						    chunk)) {
-				sk->err = EFAULT;
-				sk->error_report(sk);
-			}
-			local_bh_disable();
+			if (!skb_copy_datagram_iovec(skb, 0, tp->ucopy.iov, chunk)) {
 				tp->ucopy.len -= chunk;
 				tp->copied_seq += chunk;
 				eaten = (chunk == skb->len && !th->fin);
 			}
+			local_bh_disable();
+		}
 
 		if (eaten <= 0) {
 queue_and_out:
@@ -3178,17 +3176,8 @@ static int tcp_copy_to_iovec(struct sock *sk, struct sk_buff *skb, int hlen)
 						       tp->ucopy.iov);
 
 	if (!err) {
-update:
 		tp->ucopy.len -= chunk;
 		tp->copied_seq += chunk;
-		local_bh_disable();
-		return 0;
-	}
-
-	if (err == -EFAULT) {
-		sk->err = EFAULT;
-		sk->error_report(sk);
-		goto update;
 	}
 
 	local_bh_disable();
@@ -3327,19 +3316,16 @@ int tcp_rcv_established(struct sock *sk, struct sk_buff *skb,
 			    tp->copied_seq == tp->rcv_nxt &&
 			    len - tcp_header_len <= tp->ucopy.len &&
 			    sk->lock.users) {
-				eaten = 1;
-
-				NET_INC_STATS_BH(TCPHPHitsToUser);
-
 				__set_current_state(TASK_RUNNING);
 
-				if (tcp_copy_to_iovec(sk, skb, tcp_header_len))
-					goto csum_error;
-
-				__skb_pull(skb,tcp_header_len);
-
+				if (!tcp_copy_to_iovec(sk, skb, tcp_header_len)) {
+					__skb_pull(skb, tcp_header_len);
 					tp->rcv_nxt = TCP_SKB_CB(skb)->end_seq;
-			} else {
+					NET_INC_STATS_BH(TCPHPHitsToUser);
+					eaten = 1;
+				}
+			}
+			if (!eaten) {
 				if (tcp_checksum_complete_user(sk, skb))
 					goto csum_error;
 

net/ipv4/tcp_ipv4.c

@@ -109,10 +109,11 @@ static __inline__ int tcp_hashfn(__u32 laddr, __u16 lport,
 
 static __inline__ int tcp_sk_hashfn(struct sock *sk)
 {
-	__u32 laddr = sk->rcv_saddr;
-	__u16 lport = sk->num;
-	__u32 faddr = sk->daddr;
-	__u16 fport = sk->dport;
+	struct inet_opt *inet = inet_sk(sk);
+	__u32 laddr = inet->rcv_saddr;
+	__u16 lport = inet->num;
+	__u32 faddr = inet->daddr;
+	__u16 fport = inet->dport;
 
 	return tcp_hashfn(laddr, lport, faddr, fport);
 }
@@ -141,7 +142,8 @@ struct tcp_bind_bucket *tcp_bucket_create(struct tcp_bind_hashbucket *head,
 /* Caller must disable local BH processing. */
 static __inline__ void __tcp_inherit_port(struct sock *sk, struct sock *child)
 {
-	struct tcp_bind_hashbucket *head = &tcp_bhash[tcp_bhashfn(child->num)];
+	struct tcp_bind_hashbucket *head =
+				&tcp_bhash[tcp_bhashfn(inet_sk(child)->num)];
 	struct tcp_bind_bucket *tb;
 
 	spin_lock(&head->lock);
@@ -163,7 +165,7 @@ __inline__ void tcp_inherit_port(struct sock *sk, struct sock *child)
 
 static inline void tcp_bind_hash(struct sock *sk, struct tcp_bind_bucket *tb, unsigned short snum) 
 { 
-	sk->num = snum; 
+	inet_sk(sk)->num = snum; 
 	if ((sk->bind_next = tb->owners) != NULL)
 		tb->owners->bind_pprev = &sk->bind_next;
 	tb->owners = sk;
@@ -173,6 +175,7 @@ static inline void tcp_bind_hash(struct sock *sk, struct tcp_bind_bucket *tb, un
 
 static inline int tcp_bind_conflict(struct sock *sk, struct tcp_bind_bucket *tb)
 { 
+	struct inet_opt *inet = inet_sk(sk);
 	struct sock *sk2 = tb->owners;
 	int sk_reuse = sk->reuse;
 	
@@ -182,9 +185,10 @@ static inline int tcp_bind_conflict(struct sock *sk, struct tcp_bind_bucket *tb)
 			if (!sk_reuse	||
 			    !sk2->reuse	||
 			    sk2->state == TCP_LISTEN) {
-				if (!sk2->rcv_saddr	||
-				    !sk->rcv_saddr	||
-				    (sk2->rcv_saddr == sk->rcv_saddr))
+				struct inet_opt *inet2 = inet_sk(sk2);
+				if (!inet2->rcv_saddr	||
+				    !inet->rcv_saddr	||
+				    (inet2->rcv_saddr == inet->rcv_saddr))
 					break;
 			}
 		}
@@ -281,7 +285,8 @@ static int tcp_v4_get_port(struct sock *sk, unsigned short snum)
  */
 __inline__ void __tcp_put_port(struct sock *sk)
 {
-	struct tcp_bind_hashbucket *head = &tcp_bhash[tcp_bhashfn(sk->num)];
+	struct inet_opt *inet = inet_sk(sk);
+	struct tcp_bind_hashbucket *head = &tcp_bhash[tcp_bhashfn(inet->num)];
 	struct tcp_bind_bucket *tb;
 
 	spin_lock(&head->lock);
@@ -290,7 +295,7 @@ __inline__ void __tcp_put_port(struct sock *sk)
 		sk->bind_next->bind_pprev = sk->bind_pprev;
 	*(sk->bind_pprev) = sk->bind_next;
 	sk->prev = NULL;
-	sk->num = 0;
+	inet->num = 0;
 	if (tb->owners == NULL) {
 		if (tb->next)
 			tb->next->pprev = tb->pprev;
@@ -409,8 +414,10 @@ static struct sock *__tcp_v4_lookup_listener(struct sock *sk, u32 daddr, unsigne
 
 	hiscore=0;
 	for(; sk; sk = sk->next) {
-		if(sk->num == hnum) {
-			__u32 rcv_saddr = sk->rcv_saddr;
+		struct inet_opt *inet = inet_sk(sk);
+
+		if(inet->num == hnum) {
+			__u32 rcv_saddr = inet->rcv_saddr;
 
 			score = 1;
 			if(rcv_saddr) {
@@ -442,9 +449,11 @@ __inline__ struct sock *tcp_v4_lookup_listener(u32 daddr, unsigned short hnum, i
 	read_lock(&tcp_lhash_lock);
 	sk = tcp_listening_hash[tcp_lhashfn(hnum)];
 	if (sk) {
-		if (sk->num == hnum &&
+		struct inet_opt *inet = inet_sk(sk);
+
+		if (inet->num == hnum &&
 		    sk->next == NULL &&
-		    (!sk->rcv_saddr || sk->rcv_saddr == daddr) &&
+		    (!inet->rcv_saddr || inet->rcv_saddr == daddr) &&
 		    !sk->bound_dev_if)
 			goto sherry_cache;
 		sk = __tcp_v4_lookup_listener(sk, daddr, hnum, dif);
@@ -531,12 +540,13 @@ static inline __u32 tcp_v4_init_sequence(struct sock *sk, struct sk_buff *skb)
 
 static int tcp_v4_check_established(struct sock *sk)
 {
-	u32 daddr = sk->rcv_saddr;
-	u32 saddr = sk->daddr;
+	struct inet_opt *inet = inet_sk(sk);
+	u32 daddr = inet->rcv_saddr;
+	u32 saddr = inet->daddr;
 	int dif = sk->bound_dev_if;
 	TCP_V4_ADDR_COOKIE(acookie, saddr, daddr)
-	__u32 ports = TCP_COMBINED_PORTS(sk->dport, sk->num);
-	int hash = tcp_hashfn(daddr, sk->num, saddr, sk->dport);
+	__u32 ports = TCP_COMBINED_PORTS(inet->dport, inet->num);
+	int hash = tcp_hashfn(daddr, inet->num, saddr, inet->dport);
 	struct tcp_ehash_bucket *head = &tcp_ehash[hash];
 	struct sock *sk2, **skp;
 	struct tcp_tw_bucket *tw;
@@ -625,7 +635,7 @@ static int tcp_v4_check_established(struct sock *sk)
 
 int tcp_v4_hash_connecting(struct sock *sk)
 {
-	unsigned short snum = sk->num;
+	unsigned short snum = inet_sk(sk)->num;
 	struct tcp_bind_hashbucket *head = &tcp_bhash[tcp_bhashfn(snum)];
 	struct tcp_bind_bucket *tb = (struct tcp_bind_bucket *)sk->prev;
 
@@ -667,7 +677,7 @@ int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 		nexthop = inet->opt->faddr;
 	}
 
-	tmp = ip_route_connect(&rt, nexthop, sk->saddr,
+	tmp = ip_route_connect(&rt, nexthop, inet->saddr,
 			       RT_CONN_FLAGS(sk), sk->bound_dev_if);
 	if (tmp < 0)
 		return tmp;
@@ -689,11 +699,11 @@ int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 	if (buff == NULL)
 		goto failure;
 
-	if (!sk->saddr)
-		sk->saddr = rt->rt_src;
-	sk->rcv_saddr = sk->saddr;
+	if (!inet->saddr)
+		inet->saddr = rt->rt_src;
+	inet->rcv_saddr = inet->saddr;
 
-	if (tp->ts_recent_stamp && sk->daddr != daddr) {
+	if (tp->ts_recent_stamp && inet->daddr != daddr) {
 		/* Reset inherited state */
 		tp->ts_recent	    = 0;
 		tp->ts_recent_stamp = 0;
@@ -716,12 +726,13 @@ int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 		}
 	}
 
-	sk->dport = usin->sin_port;
-	sk->daddr = daddr;
+	inet->dport = usin->sin_port;
+	inet->daddr = daddr;
 
 	if (!tp->write_seq)
-		tp->write_seq = secure_tcp_sequence_number(sk->saddr, sk->daddr,
-							   sk->sport,
+		tp->write_seq = secure_tcp_sequence_number(inet->saddr,
+							   inet->daddr,
+							   inet->sport,
 							   usin->sin_port);
 
 	tp->ext_header_len = 0;
@@ -738,7 +749,7 @@ int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 failure:
 	__sk_dst_reset(sk);
 	sk->route_caps = 0;
-	sk->dport = 0;
+	inet->dport = 0;
 	return err;
 }
 
@@ -1018,11 +1029,13 @@ void tcp_v4_err(struct sk_buff *skb, u32 info)
 void tcp_v4_send_check(struct sock *sk, struct tcphdr *th, int len, 
 		       struct sk_buff *skb)
 {
+	struct inet_opt *inet = inet_sk(sk);
+
 	if (skb->ip_summed == CHECKSUM_HW) {
-		th->check = ~tcp_v4_check(th, len, sk->saddr, sk->daddr, 0);
+		th->check = ~tcp_v4_check(th, len, inet->saddr, inet->daddr, 0);
 		skb->csum = offsetof(struct tcphdr, check);
 	} else {
-		th->check = tcp_v4_check(th, len, sk->saddr, sk->daddr,
+		th->check = tcp_v4_check(th, len, inet->saddr, inet->daddr,
 					 csum_partial((char *)th, th->doff<<2, skb->csum));
 	}
 }
@@ -1448,10 +1461,10 @@ struct sock * tcp_v4_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
 	newsk->route_caps = dst->dev->features;
 
 	newtp = tcp_sk(newsk);
-	newsk->daddr = req->af.v4_req.rmt_addr;
-	newsk->saddr = req->af.v4_req.loc_addr;
-	newsk->rcv_saddr = req->af.v4_req.loc_addr;
 	newinet = inet_sk(newsk);
+	newinet->daddr = req->af.v4_req.rmt_addr;
+	newinet->rcv_saddr = req->af.v4_req.loc_addr;
+	newinet->saddr = req->af.v4_req.loc_addr;
 	newinet->opt = req->af.v4_req.opt;
 	req->af.v4_req.opt = NULL;
 	newinet->mc_index = tcp_v4_iif(skb);
@@ -1736,9 +1749,9 @@ static int tcp_v4_reselect_saddr(struct sock *sk)
 	struct inet_opt *inet = inet_sk(sk);
 	int err;
 	struct rtable *rt;
-	__u32 old_saddr = sk->saddr;
+	__u32 old_saddr = inet->saddr;
 	__u32 new_saddr;
-	__u32 daddr = sk->daddr;
+	__u32 daddr = inet->daddr;
 
 	if (inet->opt && inet->opt->srr)
 		daddr = inet->opt->faddr;
@@ -1759,14 +1772,14 @@ static int tcp_v4_reselect_saddr(struct sock *sk)
 		return 0;
 
 	if (sysctl_ip_dynaddr > 1) {
-		printk(KERN_INFO "tcp_v4_rebuild_header(): shifting sk->saddr "
-		       "from %d.%d.%d.%d to %d.%d.%d.%d\n",
+		printk(KERN_INFO "tcp_v4_rebuild_header(): shifting inet->"
+				 "saddr from %d.%d.%d.%d to %d.%d.%d.%d\n",
 		       NIPQUAD(old_saddr), 
 		       NIPQUAD(new_saddr));
 	}
 
-	sk->saddr = new_saddr;
-	sk->rcv_saddr = new_saddr;
+	inet->saddr = new_saddr;
+	inet->rcv_saddr = new_saddr;
 
 	/* XXX The only one ugly spot where we need to
 	 * XXX really change the sockets identity after
@@ -1791,11 +1804,11 @@ int tcp_v4_rebuild_header(struct sock *sk)
 		return 0;
 
 	/* Reroute. */
-	daddr = sk->daddr;
+	daddr = inet->daddr;
 	if (inet->opt && inet->opt->srr)
 		daddr = inet->opt->faddr;
 
-	err = ip_route_output(&rt, daddr, sk->saddr,
+	err = ip_route_output(&rt, daddr, inet->saddr,
 			      RT_CONN_FLAGS(sk), sk->bound_dev_if);
 	if (!err) {
 		__sk_dst_set(sk, &rt->u.dst);
@@ -1818,10 +1831,11 @@ int tcp_v4_rebuild_header(struct sock *sk)
 static void v4_addr2sockaddr(struct sock *sk, struct sockaddr * uaddr)
 {
 	struct sockaddr_in *sin = (struct sockaddr_in *) uaddr;
+	struct inet_opt *inet = inet_sk(sk);
 
 	sin->sin_family		= AF_INET;
-	sin->sin_addr.s_addr	= sk->daddr;
-	sin->sin_port		= sk->dport;
+	sin->sin_addr.s_addr	= inet->daddr;
+	sin->sin_port		= inet->dport;
 }
 
 /* VJ's idea. Save last timestamp seen from this destination
@@ -1832,13 +1846,14 @@ static void v4_addr2sockaddr(struct sock *sk, struct sockaddr * uaddr)
 
 int tcp_v4_remember_stamp(struct sock *sk)
 {
+	struct inet_opt *inet = inet_sk(sk);
 	struct tcp_opt *tp = tcp_sk(sk);
 	struct rtable *rt = (struct rtable*)__sk_dst_get(sk);
 	struct inet_peer *peer = NULL;
 	int release_it = 0;
 
-	if (rt == NULL || rt->rt_dst != sk->daddr) {
-		peer = inet_getpeer(sk->daddr, 1);
+	if (rt == NULL || rt->rt_dst != inet->daddr) {
+		peer = inet_getpeer(inet->daddr, 1);
 		release_it = 1;
 	} else {
 		if (rt->peer == NULL)
@@ -1979,7 +1994,7 @@ static void get_openreq(struct sock *sk, struct open_request *req, char *tmpbuf,
 		" %02X %08X:%08X %02X:%08X %08X %5d %8d %u %d %p",
 		i,
 		req->af.v4_req.loc_addr,
-		ntohs(sk->sport),
+		ntohs(inet_sk(sk)->sport),
 		req->af.v4_req.rmt_addr,
 		ntohs(req->rmt_port),
 		TCP_SYN_RECV,
@@ -2002,11 +2017,12 @@ static void get_tcp_sock(struct sock *sp, char *tmpbuf, int i)
 	int timer_active;
 	unsigned long timer_expires;
 	struct tcp_opt *tp = tcp_sk(sp);
+	struct inet_opt *inet = inet_sk(sp);
 
-	dest  = sp->daddr;
-	src   = sp->rcv_saddr;
-	destp = ntohs(sp->dport);
-	srcp  = ntohs(sp->sport);
+	dest  = inet->daddr;
+	src   = inet->rcv_saddr;
+	destp = ntohs(inet->dport);
+	srcp  = ntohs(inet->sport);
 	if (tp->pending == TCP_TIME_RETRANS) {
 		timer_active	= 1;
 		timer_expires	= tp->timeout;

net/ipv4/tcp_minisocks.c

@@ -327,10 +327,10 @@ static void __tcp_tw_hashdance(struct sock *sk, struct tcp_tw_bucket *tw)
 	write_unlock(&ehead->lock);
 
 	/* Step 3: Put TW into bind hash. Original socket stays there too.
-	   Note, that any socket with sk->num!=0 MUST be bound in binding
-	   cache, even if it is closed.
+	   Note, that any socket with inet_sk(sk)->num != 0 MUST be bound in
+	   binding cache, even if it is closed.
 	 */
-	bhead = &tcp_bhash[tcp_bhashfn(sk->num)];
+	bhead = &tcp_bhash[tcp_bhashfn(inet_sk(sk)->num)];
 	spin_lock(&bhead->lock);
 	tw->tb = (struct tcp_bind_bucket *)sk->prev;
 	BUG_TRAP(sk->prev!=NULL);
@@ -357,17 +357,18 @@ void tcp_time_wait(struct sock *sk, int state, int timeo)
 		tw = kmem_cache_alloc(tcp_timewait_cachep, SLAB_ATOMIC);
 
 	if(tw != NULL) {
+		struct inet_opt *inet = inet_sk(sk);
 		int rto = (tp->rto<<2) - (tp->rto>>1);
 
 		/* Give us an identity. */
-		tw->daddr	= sk->daddr;
-		tw->rcv_saddr	= sk->rcv_saddr;
+		tw->daddr	= inet->daddr;
+		tw->rcv_saddr	= inet->rcv_saddr;
 		tw->bound_dev_if= sk->bound_dev_if;
-		tw->num		= sk->num;
+		tw->num		= inet->num;
 		tw->state	= TCP_TIME_WAIT;
 		tw->substate	= state;
-		tw->sport	= sk->sport;
-		tw->dport	= sk->dport;
+		tw->sport	= inet->sport;
+		tw->dport	= inet->dport;
 		tw->family	= sk->family;
 		tw->reuse	= sk->reuse;
 		tw->rcv_wscale	= tp->rcv_wscale;
@@ -660,7 +661,7 @@ struct sock *tcp_create_openreq_child(struct sock *sk, struct open_request *req,
 		newsk->prev = NULL;
 
 		/* Clone the TCP header template */
-		newsk->dport = req->rmt_port;
+		inet_sk(newsk)->dport = req->rmt_port;
 
 		sock_lock_init(newsk);
 		bh_lock_sock(newsk);

net/ipv4/tcp_output.c

@@ -188,6 +188,7 @@ static __inline__ u16 tcp_select_window(struct sock *sk)
 int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb)
 {
 	if(skb != NULL) {
+		struct inet_opt *inet = inet_sk(sk);
 		struct tcp_opt *tp = tcp_sk(sk);
 		struct tcp_skb_cb *tcb = TCP_SKB_CB(skb);
 		int tcp_header_size = tp->tcp_header_len;
@@ -227,8 +228,8 @@ int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb)
 		skb_set_owner_w(skb, sk);
 
 		/* Build TCP header and checksum it. */
-		th->source		= sk->sport;
-		th->dest		= sk->dport;
+		th->source		= inet->sport;
+		th->dest		= inet->dport;
 		th->seq			= htonl(tcb->seq);
 		th->ack_seq		= htonl(tp->rcv_nxt);
 		*(((__u16 *)th) + 6)	= htons(((tcp_header_size >> 2) << 12) | tcb->flags);
@@ -1120,7 +1121,7 @@ struct sk_buff * tcp_make_synack(struct sock *sk, struct dst_entry *dst,
 	th->syn = 1;
 	th->ack = 1;
 	TCP_ECN_make_synack(req, th);
-	th->source = sk->sport;
+	th->source = inet_sk(sk)->sport;
 	th->dest = req->rmt_port;
 	TCP_SKB_CB(skb)->seq = req->snt_isn;
 	TCP_SKB_CB(skb)->end_seq = TCP_SKB_CB(skb)->seq + 1;

net/ipv4/tcp_timer.c

@@ -334,10 +334,12 @@ static void tcp_retransmit_timer(struct sock *sk)
 		 * we cannot allow such beasts to hang infinitely.
 		 */
 #ifdef TCP_DEBUG
-		if (net_ratelimit())
+		if (net_ratelimit()) {
+			struct inet_opt *inet = inet_sk(sk);
 			printk(KERN_DEBUG "TCP: Treason uncloaked! Peer %u.%u.%u.%u:%u/%u shrinks window %u:%u. Repaired.\n",
-			       NIPQUAD(sk->daddr), htons(sk->dport), sk->num,
-			       tp->snd_una, tp->snd_nxt);
+			       NIPQUAD(inet->daddr), htons(inet->dport),
+			       inet->num, tp->snd_una, tp->snd_nxt);
+		}
 #endif
 		if (tcp_time_stamp - tp->rcv_tstamp > TCP_RTO_MAX) {
 			tcp_write_err(sk);

net/ipv4/udp.c

@@ -108,6 +108,8 @@ int udp_port_rover;
 
 static int udp_v4_get_port(struct sock *sk, unsigned short snum)
 {
+	struct inet_opt *inet = inet_sk(sk);
+
 	write_lock_bh(&udp_hash_lock);
 	if (snum == 0) {
 		int best_size_so_far, best, result, i;
@@ -118,11 +120,11 @@ static int udp_v4_get_port(struct sock *sk, unsigned short snum)
 		best_size_so_far = 32767;
 		best = result = udp_port_rover;
 		for (i = 0; i < UDP_HTABLE_SIZE; i++, result++) {
-			struct sock *sk;
+			struct sock *sk2;
 			int size;
 
-			sk = udp_hash[result & (UDP_HTABLE_SIZE - 1)];
-			if (!sk) {
+			sk2 = udp_hash[result & (UDP_HTABLE_SIZE - 1)];
+			if (!sk2) {
 				if (result > sysctl_local_port_range[1])
 					result = sysctl_local_port_range[0] +
 						((result - sysctl_local_port_range[0]) &
@@ -133,7 +135,7 @@ static int udp_v4_get_port(struct sock *sk, unsigned short snum)
 			do {
 				if (++size >= best_size_so_far)
 					goto next;
-			} while ((sk = sk->next) != NULL);
+			} while ((sk2 = sk2->next) != NULL);
 			best_size_so_far = size;
 			best = result;
 		next:;
@@ -157,17 +159,19 @@ static int udp_v4_get_port(struct sock *sk, unsigned short snum)
 		for (sk2 = udp_hash[snum & (UDP_HTABLE_SIZE - 1)];
 		     sk2 != NULL;
 		     sk2 = sk2->next) {
-			if (sk2->num == snum &&
+			struct inet_opt *inet2 = inet_sk(sk2);
+
+			if (inet2->num == snum &&
 			    sk2 != sk &&
 			    sk2->bound_dev_if == sk->bound_dev_if &&
-			    (!sk2->rcv_saddr ||
-			     !sk->rcv_saddr ||
-			     sk2->rcv_saddr == sk->rcv_saddr) &&
+			    (!inet2->rcv_saddr ||
+			     !inet->rcv_saddr ||
+			     inet2->rcv_saddr == inet->rcv_saddr) &&
 			    (!sk2->reuse || !sk->reuse))
 				goto fail;
 		}
 	}
-	sk->num = snum;
+	inet->num = snum;
 	if (sk->pprev == NULL) {
 		struct sock **skp = &udp_hash[snum & (UDP_HTABLE_SIZE - 1)];
 		if ((sk->next = *skp) != NULL)
@@ -198,7 +202,7 @@ static void udp_v4_unhash(struct sock *sk)
 			sk->next->pprev = sk->pprev;
 		*sk->pprev = sk->next;
 		sk->pprev = NULL;
-		sk->num = 0;
+		inet_sk(sk)->num = 0;
 		sock_prot_dec_use(sk->prot);
 		__sock_put(sk);
 	}
@@ -215,20 +219,22 @@ struct sock *udp_v4_lookup_longway(u32 saddr, u16 sport, u32 daddr, u16 dport, i
 	int badness = -1;
 
 	for(sk = udp_hash[hnum & (UDP_HTABLE_SIZE - 1)]; sk != NULL; sk = sk->next) {
-		if(sk->num == hnum) {
+		struct inet_opt *inet = inet_sk(sk);
+
+		if (inet->num == hnum) {
 			int score = 0;
-			if(sk->rcv_saddr) {
-				if(sk->rcv_saddr != daddr)
+			if (inet->rcv_saddr) {
+				if (inet->rcv_saddr != daddr)
 					continue;
 				score++;
 			}
-			if(sk->daddr) {
-				if(sk->daddr != saddr)
+			if (inet->daddr) {
+				if (inet->daddr != saddr)
 					continue;
 				score++;
 			}
-			if(sk->dport) {
-				if(sk->dport != sport)
+			if (inet->dport) {
+				if (inet->dport != sport)
 					continue;
 				score++;
 			}
@@ -269,10 +275,12 @@ static inline struct sock *udp_v4_mcast_next(struct sock *sk,
 	struct sock *s = sk;
 	unsigned short hnum = ntohs(loc_port);
 	for(; s; s = s->next) {
-		if ((s->num != hnum)					||
-		    (s->daddr && s->daddr!=rmt_addr)			||
-		    (s->dport != rmt_port && s->dport != 0)			||
-		    (s->rcv_saddr  && s->rcv_saddr != loc_addr)		||
+		struct inet_opt *inet = inet_sk(s);
+
+		if (inet->num != hnum					||
+		    (inet->daddr && inet->daddr != rmt_addr)		||
+		    (inet->dport != rmt_port && inet->dport)		||
+		    (inet->rcv_saddr && inet->rcv_saddr != loc_addr)	||
 		    (s->bound_dev_if && s->bound_dev_if != dif))
 			continue;
 		break;
@@ -469,15 +477,15 @@ int udp_sendmsg(struct sock *sk, struct msghdr *msg, int len)
 	} else {
 		if (sk->state != TCP_ESTABLISHED)
 			return -ENOTCONN;
-		ufh.daddr = sk->daddr;
-		ufh.uh.dest = sk->dport;
+		ufh.daddr   = inet->daddr;
+		ufh.uh.dest = inet->dport;
 		/* Open fast path for connected socket.
 		   Route will not be used, if at least one option is set.
 		 */
 		connected = 1;
   	}
-	ipc.addr = sk->saddr;
-	ufh.uh.source = sk->sport;
+	ipc.addr = inet->saddr;
+	ufh.uh.source = inet->sport;
 
 	ipc.opt = NULL;
 	ipc.oif = sk->bound_dev_if;
@@ -728,7 +736,7 @@ int udp_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 
 	sk_dst_reset(sk);
 
-	err = ip_route_connect(&rt, usin->sin_addr.s_addr, sk->saddr,
+	err = ip_route_connect(&rt, usin->sin_addr.s_addr, inet->saddr,
 			       RT_CONN_FLAGS(sk), sk->bound_dev_if);
 	if (err)
 		return err;
@@ -736,12 +744,12 @@ int udp_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 		ip_rt_put(rt);
 		return -EACCES;
 	}
-  	if(!sk->saddr)
-	  	sk->saddr = rt->rt_src;		/* Update source address */
-	if(!sk->rcv_saddr)
-		sk->rcv_saddr = rt->rt_src;
-	sk->daddr = rt->rt_dst;
-	sk->dport = usin->sin_port;
+  	if (!inet->saddr)
+	  	inet->saddr = rt->rt_src;	/* Update source address */
+	if (!inet->rcv_saddr)
+		inet->rcv_saddr = rt->rt_src;
+	inet->daddr = rt->rt_dst;
+	inet->dport = usin->sin_port;
 	sk->state = TCP_ESTABLISHED;
 	inet->id = jiffies;
 
@@ -751,17 +759,17 @@ int udp_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 
 int udp_disconnect(struct sock *sk, int flags)
 {
+	struct inet_opt *inet = inet_sk(sk);
 	/*
 	 *	1003.1g - break association.
 	 */
 	 
 	sk->state = TCP_CLOSE;
-	sk->daddr = 0;
-	sk->dport = 0;
+	inet->daddr = 0;
+	inet->dport = 0;
 	sk->bound_dev_if = 0;
 	if (!(sk->userlocks&SOCK_BINDADDR_LOCK)) {
-		sk->rcv_saddr = 0;
-		sk->saddr = 0;
+		inet->rcv_saddr = inet->saddr = 0;
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
 		if (sk->family == PF_INET6) {
 			struct ipv6_pinfo *np = inet6_sk(sk);
@@ -773,7 +781,7 @@ int udp_disconnect(struct sock *sk, int flags)
 	}
 	if (!(sk->userlocks&SOCK_BINDPORT_LOCK)) {
 		sk->prot->unhash(sk);
-		sk->sport = 0;
+		inet->sport = 0;
 	}
 	sk_dst_reset(sk);
 	return 0;
@@ -962,13 +970,14 @@ int udp_rcv(struct sk_buff *skb)
 
 static void get_udp_sock(struct sock *sp, char *tmpbuf, int i)
 {
+	struct inet_opt *inet = inet_sk(sp);
 	unsigned int dest, src;
 	__u16 destp, srcp;
 
-	dest  = sp->daddr;
-	src   = sp->rcv_saddr;
-	destp = ntohs(sp->dport);
-	srcp  = ntohs(sp->sport);
+	dest  = inet->daddr;
+	src   = inet->rcv_saddr;
+	destp = ntohs(inet->dport);
+	srcp  = ntohs(inet->sport);
 	sprintf(tmpbuf, "%4d: %08X:%04X %08X:%04X"
 		" %02X %08X:%08X %02X:%08lX %08X %5d %8d %ld %d %p",
 		i, src, srcp, dest, destp, sp->state, 

net/ipv6/af_inet6.c

@@ -200,7 +200,7 @@ static int inet6_create(struct socket *sock, int protocol)
 	inet = inet_sk(sk);
 
 	if (SOCK_RAW == sock->type) {
-		sk->num = protocol;
+		inet->num = protocol;
 		if (IPPROTO_RAW == protocol)
 			inet->hdrincl = 1;
 	}
@@ -241,12 +241,12 @@ static int inet6_create(struct socket *sock, int protocol)
 #endif
 	MOD_INC_USE_COUNT;
 
-	if (sk->num) {
+	if (inet->num) {
 		/* It assumes that any protocol which allows
 		 * the user to assign a number at socket
 		 * creation time automatically shares.
 		 */
-		sk->sport = ntohs(sk->num);
+		inet->sport = ntohs(inet->num);
 		sk->prot->hash(sk);
 	}
 	if (sk->prot->init) {
@@ -278,6 +278,7 @@ static int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 {
 	struct sockaddr_in6 *addr=(struct sockaddr_in6 *)uaddr;
 	struct sock *sk = sock->sk;
+	struct inet_opt *inet = inet_sk(sk);
 	struct ipv6_pinfo *np = inet6_sk(sk);
 	__u32 v4addr = 0;
 	unsigned short snum;
@@ -318,8 +319,7 @@ static int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 	lock_sock(sk);
 
 	/* Check these errors (active socket, double bind). */
-	if ((sk->state != TCP_CLOSE)			||
-	    (sk->num != 0)) {
+	if (sk->state != TCP_CLOSE || inet->num) {
 		release_sock(sk);
 		return -EINVAL;
 	}
@@ -340,8 +340,8 @@ static int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 		}
 	}
 
-	sk->rcv_saddr = v4addr;
-	sk->saddr = v4addr;
+	inet->rcv_saddr = v4addr;
+	inet->saddr = v4addr;
 
 	ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr);
 		
@@ -350,8 +350,7 @@ static int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 
 	/* Make sure we are allowed to bind here. */
 	if (sk->prot->get_port(sk, snum) != 0) {
-		sk->rcv_saddr = 0;
-		sk->saddr = 0;
+		inet->rcv_saddr = inet->saddr = 0;
 		memset(&np->rcv_saddr, 0, sizeof(struct in6_addr));
 		memset(&np->saddr, 0, sizeof(struct in6_addr));
 
@@ -363,9 +362,9 @@ static int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 		sk->userlocks |= SOCK_BINDADDR_LOCK;
 	if (snum)
 		sk->userlocks |= SOCK_BINDPORT_LOCK;
-	sk->sport = ntohs(sk->num);
-	sk->dport = 0;
-	sk->daddr = 0;
+	inet->sport = ntohs(inet->num);
+	inet->dport = 0;
+	inet->daddr = 0;
 	release_sock(sk);
 
 	return 0;
@@ -421,17 +420,18 @@ static int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
 {
 	struct sockaddr_in6 *sin=(struct sockaddr_in6 *)uaddr;
 	struct sock *sk = sock->sk;
+	struct inet_opt *inet = inet_sk(sk);
 	struct ipv6_pinfo *np = inet6_sk(sk);
   
 	sin->sin6_family = AF_INET6;
 	sin->sin6_flowinfo = 0;
 	sin->sin6_scope_id = 0;
 	if (peer) {
-		if (!sk->dport)
+		if (!inet->dport)
 			return -ENOTCONN;
 		if (((1<<sk->state)&(TCPF_CLOSE|TCPF_SYN_SENT)) && peer == 1)
 			return -ENOTCONN;
-		sin->sin6_port = sk->dport;
+		sin->sin6_port = inet->dport;
 		memcpy(&sin->sin6_addr, &np->daddr, sizeof(struct in6_addr));
 		if (np->sndflow)
 			sin->sin6_flowinfo = np->flow_label;
@@ -443,7 +443,7 @@ static int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
 			memcpy(&sin->sin6_addr, &np->rcv_saddr,
 			       sizeof(struct in6_addr));
 
-		sin->sin6_port = sk->sport;
+		sin->sin6_port = inet->sport;
 	}
 	if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL)
 		sin->sin6_scope_id = sk->bound_dev_if;

net/ipv6/ipv6_sockglue.c

@@ -79,7 +79,7 @@ int ip6_ra_control(struct sock *sk, int sel, void (*destructor)(struct sock *))
 	struct ip6_ra_chain *ra, *new_ra, **rap;
 
 	/* RA packet may be delivered ONLY to IPPROTO_RAW socket */
-	if (sk->type != SOCK_RAW || sk->num != IPPROTO_RAW)
+	if (sk->type != SOCK_RAW || inet_sk(sk)->num != IPPROTO_RAW)
 		return -EINVAL;
 
 	new_ra = (sel>=0) ? kmalloc(sizeof(*new_ra), GFP_KERNEL) : NULL;
@@ -283,7 +283,7 @@ int ipv6_setsockopt(struct sock *sk, int level, int optname, char *optval,
 			if (opt) {
 				struct tcp_opt *tp = tcp_sk(sk);
 				if (!((1<<sk->state)&(TCPF_LISTEN|TCPF_CLOSE))
-				    && sk->daddr != LOOPBACK4_IPV6) {
+				    && inet_sk(sk)->daddr != LOOPBACK4_IPV6) {
 					tp->ext_header_len = opt->opt_flen + opt->opt_nflen;
 					tcp_sync_mss(sk, tp->pmtu_cookie);
 				}

net/ipv6/ndisc.c

@@ -84,58 +84,63 @@ static int pndisc_constructor(struct pneigh_entry *n);
 static void pndisc_destructor(struct pneigh_entry *n);
 static void pndisc_redo(struct sk_buff *skb);
 
-static struct neigh_ops ndisc_generic_ops =
-{
-	AF_INET6,
-	NULL,
-	ndisc_solicit,
-	ndisc_error_report,
-	neigh_resolve_output,
-	neigh_connected_output,
-	dev_queue_xmit,
-	dev_queue_xmit
+static struct neigh_ops ndisc_generic_ops = {
+	family:			AF_INET6,
+	solicit:		ndisc_solicit,
+	error_report:		ndisc_error_report,
+	output:			neigh_resolve_output,
+	connected_output:	neigh_connected_output,
+	hh_output:		dev_queue_xmit,
+	queue_xmit:		dev_queue_xmit,
 };
 
-static struct neigh_ops ndisc_hh_ops =
-{
-	AF_INET6,
-	NULL,
-	ndisc_solicit,
-	ndisc_error_report,
-	neigh_resolve_output,
-	neigh_resolve_output,
-	dev_queue_xmit,
-	dev_queue_xmit
+static struct neigh_ops ndisc_hh_ops = {
+	family:			AF_INET6,
+	solicit:		ndisc_solicit,
+	error_report:		ndisc_error_report,
+	output:			neigh_resolve_output,
+	connected_output:	neigh_resolve_output,
+	hh_output:		dev_queue_xmit,
+	queue_xmit:		dev_queue_xmit,
 };
 
 
-static struct neigh_ops ndisc_direct_ops =
-{
-	AF_INET6,
-	NULL,
-	NULL,
-	NULL,
-	dev_queue_xmit,
-	dev_queue_xmit,
-	dev_queue_xmit,
-	dev_queue_xmit
+static struct neigh_ops ndisc_direct_ops = {
+	family:			AF_INET6,
+	output:			dev_queue_xmit,
+	connected_output:	dev_queue_xmit,
+	hh_output:		dev_queue_xmit,
+	queue_xmit:		dev_queue_xmit,
 };
 
-struct neigh_table nd_tbl =
-{
-	NULL,
-	AF_INET6,
-	sizeof(struct neighbour) + sizeof(struct in6_addr),
-	sizeof(struct in6_addr),
-	ndisc_hash,
-	ndisc_constructor,
-	pndisc_constructor,
-	pndisc_destructor,
-	pndisc_redo,
-	"ndisc_cache",
-        { NULL, NULL, &nd_tbl, 0, NULL, NULL,
-		  30*HZ, 1*HZ, 60*HZ, 30*HZ, 5*HZ, 3, 3, 0, 3, 1*HZ, (8*HZ)/10, 64, 0 },
-	30*HZ, 128, 512, 1024,
+struct neigh_table nd_tbl = {
+	family:		AF_INET6,
+	entry_size:	sizeof(struct neighbour) + sizeof(struct in6_addr),
+	key_len:	sizeof(struct in6_addr),
+	hash:		ndisc_hash,
+	constructor:	ndisc_constructor,
+	pconstructor:	pndisc_constructor,
+	pdestructor:	pndisc_destructor,
+	proxy_redo:	pndisc_redo,
+	id:		"ndisc_cache",
+	parms: {
+		tbl:			&nd_tbl,
+		base_reachable_time:	30 * HZ,
+		retrans_time:		 1 * HZ,
+		gc_staletime:		60 * HZ,
+		reachable_time:		30 * HZ,
+		delay_probe_time:	 5 * HZ,
+		queue_len:		 3,
+		ucast_probes:		 3,
+		mcast_probes:		 3,
+		anycast_delay:		 1 * HZ,
+		proxy_delay:		(8 * HZ) / 10,
+		proxy_qlen:		64,
+	},
+	gc_interval:	  30 * HZ,
+	gc_thresh1:	 128,
+	gc_thresh2:	 512,
+	gc_thresh3:	1024,
 };
 
 #define NDISC_OPT_SPACE(len) (((len)+2+7)&~7)

net/ipv6/raw.c

@@ -50,7 +50,8 @@ rwlock_t raw_v6_lock = RW_LOCK_UNLOCKED;
 
 static void raw_v6_hash(struct sock *sk)
 {
-	struct sock **skp = &raw_v6_htable[sk->num & (RAWV6_HTABLE_SIZE - 1)];
+	struct sock **skp = &raw_v6_htable[inet_sk(sk)->num &
+					   (RAWV6_HTABLE_SIZE - 1)];
 
 	write_lock_bh(&raw_v6_lock);
 	if ((sk->next = *skp) != NULL)
@@ -85,7 +86,7 @@ struct sock *__raw_v6_lookup(struct sock *sk, unsigned short num,
 	int addr_type = ipv6_addr_type(loc_addr);
 
 	for(s = sk; s; s = s->next) {
-		if(s->num == num) {
+		if (inet_sk(s)->num == num) {
 			struct ipv6_pinfo *np = inet6_sk(s);
 
 			if (!ipv6_addr_any(&np->daddr) &&
@@ -186,6 +187,7 @@ struct sock * ipv6_raw_deliver(struct sk_buff *skb, int nexthdr)
 /* This cleans up af_inet6 a bit. -DaveM */
 static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 {
+	struct inet_opt *inet = inet_sk(sk);
 	struct ipv6_pinfo *np = inet6_sk(sk);
 	struct sockaddr_in6 *addr = (struct sockaddr_in6 *) uaddr;
 	__u32 v4addr = 0;
@@ -233,8 +235,7 @@ static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 		}
 	}
 
-	sk->rcv_saddr = v4addr;
-	sk->saddr = v4addr;
+	inet->rcv_saddr = inet->saddr = v4addr;
 	ipv6_addr_copy(&np->rcv_saddr, &addr->sin6_addr);
 	if (!(addr_type & IPV6_ADDR_MULTICAST))
 		ipv6_addr_copy(&np->saddr, &addr->sin6_addr);
@@ -439,6 +440,7 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, int len)
 {
 	struct ipv6_txoptions opt_space;
 	struct sockaddr_in6 * sin6 = (struct sockaddr_in6 *) msg->msg_name;
+	struct inet_opt *inet = inet_sk(sk);
 	struct ipv6_pinfo *np = inet6_sk(sk);
 	struct ipv6_txoptions *opt = NULL;
 	struct ip6_flowlabel *flowlabel = NULL;
@@ -478,7 +480,7 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, int len)
 		proto = ntohs(sin6->sin6_port);
 
 		if (!proto)
-			proto = sk->num;
+			proto = inet->num;
 
 		if (proto > 255)
 			return(-EINVAL);
@@ -507,7 +509,7 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, int len)
 		if (sk->state != TCP_ESTABLISHED) 
 			return(-EINVAL);
 		
-		proto = sk->num;
+		proto = inet->num;
 		daddr = &np->daddr;
 		fl.fl6_flowlabel = np->flow_label;
 	}
@@ -635,7 +637,7 @@ static int rawv6_setsockopt(struct sock *sk, int level, int optname,
 			break;
 
 		case SOL_ICMPV6:
-			if (sk->num != IPPROTO_ICMPV6)
+			if (inet_sk(sk)->num != IPPROTO_ICMPV6)
 				return -EOPNOTSUPP;
 			return rawv6_seticmpfilter(sk, level, optname, optval,
 						   optlen);
@@ -678,7 +680,7 @@ static int rawv6_getsockopt(struct sock *sk, int level, int optname,
 			break;
 
 		case SOL_ICMPV6:
-			if (sk->num != IPPROTO_ICMPV6)
+			if (inet_sk(sk)->num != IPPROTO_ICMPV6)
 				return -EOPNOTSUPP;
 			return rawv6_geticmpfilter(sk, level, optname, optval,
 						   optlen);
@@ -741,7 +743,7 @@ static int rawv6_ioctl(struct sock *sk, int cmd, unsigned long arg)
 
 static void rawv6_close(struct sock *sk, long timeout)
 {
-	if (sk->num == IPPROTO_RAW)
+	if (inet_sk(sk)->num == IPPROTO_RAW)
 		ip6_ra_control(sk, -1, NULL);
 
 	inet_sock_release(sk);
@@ -764,7 +766,7 @@ static void get_raw6_sock(struct sock *sp, char *tmpbuf, int i)
 	dest  = &np->daddr;
 	src   = &np->rcv_saddr;
 	destp = 0;
-	srcp  = sp->num;
+	srcp  = inet_sk(sp)->num;
 	sprintf(tmpbuf,
 		"%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
 		"%02X %08X:%08X %02X:%08lX %08X %5d %8d %ld %d %p",

net/ipv6/tcp_ipv6.c

@@ -76,11 +76,12 @@ static __inline__ int tcp_v6_hashfn(struct in6_addr *laddr, u16 lport,
 
 static __inline__ int tcp_v6_sk_hashfn(struct sock *sk)
 {
+	struct inet_opt *inet = inet_sk(sk);
 	struct ipv6_pinfo *np = inet6_sk(sk);
 	struct in6_addr *laddr = &np->rcv_saddr;
 	struct in6_addr *faddr = &np->daddr;
-	__u16 lport = sk->num;
-	__u16 fport = sk->dport;
+	__u16 lport = inet->num;
+	__u16 fport = inet->dport;
 	return tcp_v6_hashfn(laddr, lport, faddr, fport);
 }
 
@@ -153,14 +154,15 @@ static int tcp_v6_get_port(struct sock *sk, unsigned short snum)
 					    !sk2->reuse	||
 					    sk2->state == TCP_LISTEN) {
 						/* NOTE: IPv6 tw bucket have different format */
-						if (!sk2->rcv_saddr	||
+						if (!inet_sk(sk2)->rcv_saddr ||
 						    addr_type == IPV6_ADDR_ANY ||
 						    !ipv6_addr_cmp(&np->rcv_saddr,
 								   sk2->state != TCP_TIME_WAIT ?
 								   &np2->rcv_saddr :
 								   &((struct tcp_tw_bucket*)sk)->v6_rcv_saddr) ||
 						    (addr_type==IPV6_ADDR_MAPPED && sk2->family==AF_INET &&
-						     sk->rcv_saddr==sk2->rcv_saddr))
+						     inet_sk(sk)->rcv_saddr ==
+						     inet_sk(sk2)->rcv_saddr))
 							break;
 					}
 				}
@@ -185,7 +187,7 @@ static int tcp_v6_get_port(struct sock *sk, unsigned short snum)
 		tb->fastreuse = 0;
 
 success:
-	sk->num = snum;
+	inet_sk(sk)->num = snum;
 	if (sk->prev == NULL) {
 		if ((sk->bind_next = tb->owners) != NULL)
 			tb->owners->bind_pprev = &sk->bind_next;
@@ -255,7 +257,7 @@ static struct sock *tcp_v6_lookup_listener(struct in6_addr *daddr, unsigned shor
 	read_lock(&tcp_lhash_lock);
 	sk = tcp_listening_hash[tcp_lhashfn(hnum)];
 	for(; sk; sk = sk->next) {
-		if((sk->num == hnum) && (sk->family == PF_INET6)) {
+		if (inet_sk(sk)->num == hnum && sk->family == PF_INET6) {
 			struct ipv6_pinfo *np = inet6_sk(sk);
 			
 			score = 1;
@@ -313,9 +315,11 @@ static inline struct sock *__tcp_v6_lookup_established(struct in6_addr *saddr, u
 	}
 	/* Must check for a TIME_WAIT'er before going to listener hash. */
 	for(sk = (head + tcp_ehash_size)->chain; sk; sk = sk->next) {
-		if(*((__u32 *)&(sk->dport))	== ports	&&
-		   sk->family			== PF_INET6) {
+		/* FIXME: acme: check this... */
 		struct tcp_tw_bucket *tw = (struct tcp_tw_bucket *)sk;
+
+		if(*((__u32 *)&(tw->dport))	== ports	&&
+		   sk->family			== PF_INET6) {
 			if(!ipv6_addr_cmp(&tw->v6_daddr, saddr)	&&
 			   !ipv6_addr_cmp(&tw->v6_rcv_saddr, daddr) &&
 			   (!sk->bound_dev_if || sk->bound_dev_if == dif))
@@ -424,12 +428,13 @@ static __u32 tcp_v6_init_sequence(struct sock *sk, struct sk_buff *skb)
 
 static int tcp_v6_check_established(struct sock *sk)
 {
+	struct inet_opt *inet = inet_sk(sk);
 	struct ipv6_pinfo *np = inet6_sk(sk);
 	struct in6_addr *daddr = &np->rcv_saddr;
 	struct in6_addr *saddr = &np->daddr;
 	int dif = sk->bound_dev_if;
-	u32 ports = TCP_COMBINED_PORTS(sk->dport, sk->num);
-	int hash = tcp_v6_hashfn(daddr, sk->num, saddr, sk->dport);
+	u32 ports = TCP_COMBINED_PORTS(inet->dport, inet->num);
+	int hash = tcp_v6_hashfn(daddr, inet->num, saddr, inet->dport);
 	struct tcp_ehash_bucket *head = &tcp_ehash[hash];
 	struct sock *sk2, **skp;
 	struct tcp_tw_bucket *tw;
@@ -439,7 +444,7 @@ static int tcp_v6_check_established(struct sock *sk)
 	for(skp = &(head + tcp_ehash_size)->chain; (sk2=*skp)!=NULL; skp = &sk2->next) {
 		tw = (struct tcp_tw_bucket*)sk2;
 
-		if(*((__u32 *)&(sk2->dport))	== ports	&&
+		if(*((__u32 *)&(tw->dport))	== ports	&&
 		   sk2->family			== PF_INET6	&&
 		   !ipv6_addr_cmp(&tw->v6_daddr, saddr)		&&
 		   !ipv6_addr_cmp(&tw->v6_rcv_saddr, daddr)	&&
@@ -496,7 +501,7 @@ static int tcp_v6_check_established(struct sock *sk)
 
 static int tcp_v6_hash_connecting(struct sock *sk)
 {
-	unsigned short snum = sk->num;
+	unsigned short snum = inet_sk(sk)->num;
 	struct tcp_bind_hashbucket *head = &tcp_bhash[tcp_bhashfn(snum)];
 	struct tcp_bind_bucket *tb = head->chain;
 
@@ -522,6 +527,7 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
 			  int addr_len)
 {
 	struct sockaddr_in6 *usin = (struct sockaddr_in6 *) uaddr;
+	struct inet_opt *inet = inet_sk(sk);
 	struct ipv6_pinfo *np = inet6_sk(sk);
 	struct tcp_opt *tp = tcp_sk(sk);
 	struct in6_addr *saddr = NULL;
@@ -618,9 +624,9 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
 			goto failure;
 		} else {
 			ipv6_addr_set(&np->saddr, 0, 0, htonl(0x0000FFFF),
-				      sk->saddr);
+				      inet->saddr);
 			ipv6_addr_set(&np->rcv_saddr, 0, 0, htonl(0x0000FFFF),
-				      sk->rcv_saddr);
+				      inet->rcv_saddr);
 		}
 
 		return err;
@@ -634,7 +640,7 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
 	fl.fl6_src = saddr;
 	fl.oif = sk->bound_dev_if;
 	fl.uli_u.ports.dport = usin->sin6_port;
-	fl.uli_u.ports.sport = sk->sport;
+	fl.uli_u.ports.sport = inet->sport;
 
 	if (np->opt && np->opt->srcrt) {
 		struct rt0_hdr *rt0 = (struct rt0_hdr *)np->opt->srcrt;
@@ -662,7 +668,7 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
 	/* set the source address */
 	ipv6_addr_copy(&np->rcv_saddr, saddr);
 	ipv6_addr_copy(&np->saddr, saddr);
-	sk->rcv_saddr= LOOPBACK4_IPV6;
+	inet->rcv_saddr = LOOPBACK4_IPV6;
 
 	tp->ext_header_len = 0;
 	if (np->opt)
@@ -675,7 +681,7 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
 	if (buff == NULL)
 		goto failure;
 
-	sk->dport = usin->sin6_port;
+	inet->dport = usin->sin6_port;
 
 	/*
 	 *	Init variables
@@ -684,7 +690,8 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
 	if (!tp->write_seq)
 		tp->write_seq = secure_tcpv6_sequence_number(np->saddr.s6_addr32,
 							     np->daddr.s6_addr32,
-							     sk->sport, sk->dport);
+							     inet->sport,
+							     inet->dport);
 
 	err = tcp_connect(sk, buff);
 	if (err == 0)
@@ -692,7 +699,7 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
 
 failure:
 	__sk_dst_reset(sk);
-	sk->dport = 0;
+	inet->dport = 0;
 	sk->route_caps = 0;
 	return err;
 }
@@ -750,6 +757,7 @@ void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 		dst = __sk_dst_check(sk, np->dst_cookie);
 
 		if (dst == NULL) {
+			struct inet_opt *inet = inet_sk(sk);
 			struct flowi fl;
 
 			/* BUGGG_FUTURE: Again, it is not clear how
@@ -760,8 +768,8 @@ void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 			fl.nl_u.ip6_u.daddr = &np->daddr;
 			fl.nl_u.ip6_u.saddr = &np->saddr;
 			fl.oif = sk->bound_dev_if;
-			fl.uli_u.ports.dport = sk->dport;
-			fl.uli_u.ports.sport = sk->sport;
+			fl.uli_u.ports.dport = inet->dport;
+			fl.uli_u.ports.sport = inet->sport;
 
 			dst = ip6_route_output(sk, &fl);
 		} else
@@ -850,7 +858,7 @@ static int tcp_v6_send_synack(struct sock *sk, struct open_request *req,
 	fl.fl6_flowlabel = 0;
 	fl.oif = req->af.v6_req.iif;
 	fl.uli_u.ports.dport = req->rmt_port;
-	fl.uli_u.ports.sport = sk->sport;
+	fl.uli_u.ports.sport = inet_sk(sk)->sport;
 
 	if (dst == NULL) {
 		opt = np->opt;
@@ -1245,14 +1253,15 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
 		if (newsk == NULL) 
 			return NULL;
 
+		newinet = inet_sk(newsk);
 		newnp = inet6_sk(newsk);
 		newtp = tcp_sk(newsk);
 
 		ipv6_addr_set(&newnp->daddr, 0, 0, htonl(0x0000FFFF),
-			      newsk->daddr);
+			      newinet->daddr);
 
 		ipv6_addr_set(&newnp->saddr, 0, 0, htonl(0x0000FFFF),
-			      newsk->saddr);
+			      newinet->saddr);
 
 		ipv6_addr_copy(&newnp->rcv_saddr, &newnp->saddr);
 
@@ -1303,7 +1312,7 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
 		fl.fl6_flowlabel = 0;
 		fl.oif = sk->bound_dev_if;
 		fl.uli_u.ports.dport = req->rmt_port;
-		fl.uli_u.ports.sport = sk->sport;
+		fl.uli_u.ports.sport = inet_sk(sk)->sport;
 
 		dst = ip6_route_output(sk, &fl);
 	}
@@ -1376,9 +1385,7 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
 	newtp->advmss = dst->advmss;
 	tcp_initialize_rcv_mss(newsk);
 
-	newsk->daddr	 = LOOPBACK4_IPV6;
-	newsk->saddr	 = LOOPBACK4_IPV6;
-	newsk->rcv_saddr = LOOPBACK4_IPV6;
+	newinet->daddr = newinet->saddr = newinet->rcv_saddr = LOOPBACK4_IPV6;
 
 	__tcp_v6_hash(newsk);
 	tcp_inherit_port(sk, newsk);
@@ -1680,6 +1687,7 @@ static int tcp_v6_rebuild_header(struct sock *sk)
 	dst = __sk_dst_check(sk, np->dst_cookie);
 
 	if (dst == NULL) {
+		struct inet_opt *inet = inet_sk(sk);
 		struct flowi fl;
 
 		fl.proto = IPPROTO_TCP;
@@ -1687,8 +1695,8 @@ static int tcp_v6_rebuild_header(struct sock *sk)
 		fl.nl_u.ip6_u.saddr = &np->saddr;
 		fl.fl6_flowlabel = np->flow_label;
 		fl.oif = sk->bound_dev_if;
-		fl.uli_u.ports.dport = sk->dport;
-		fl.uli_u.ports.sport = sk->sport;
+		fl.uli_u.ports.dport = inet->dport;
+		fl.uli_u.ports.sport = inet->sport;
 
 		if (np->opt && np->opt->srcrt) {
 			struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt;
@@ -1714,6 +1722,7 @@ static int tcp_v6_rebuild_header(struct sock *sk)
 static int tcp_v6_xmit(struct sk_buff *skb)
 {
 	struct sock *sk = skb->sk;
+	struct inet_opt *inet = inet_sk(sk);
 	struct ipv6_pinfo *np = inet6_sk(sk);
 	struct flowi fl;
 	struct dst_entry *dst;
@@ -1724,8 +1733,8 @@ static int tcp_v6_xmit(struct sk_buff *skb)
 	fl.fl6_flowlabel = np->flow_label;
 	IP6_ECN_flow_xmit(sk, fl.fl6_flowlabel);
 	fl.oif = sk->bound_dev_if;
-	fl.uli_u.ports.sport = sk->sport;
-	fl.uli_u.ports.dport = sk->dport;
+	fl.uli_u.ports.sport = inet->sport;
+	fl.uli_u.ports.dport = inet->dport;
 
 	if (np->opt && np->opt->srcrt) {
 		struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt;
@@ -1761,7 +1770,7 @@ static void v6_addr2sockaddr(struct sock *sk, struct sockaddr * uaddr)
 
 	sin6->sin6_family = AF_INET6;
 	memcpy(&sin6->sin6_addr, &np->daddr, sizeof(struct in6_addr));
-	sin6->sin6_port	= sk->dport;
+	sin6->sin6_port	= inet_sk(sk)->dport;
 	/* We do not store received flowlabel for TCP */
 	sin6->sin6_flowinfo = 0;
 	sin6->sin6_scope_id = 0;
@@ -1903,7 +1912,7 @@ static void get_openreq6(struct sock *sk, struct open_request *req, char *tmpbuf
 		i,
 		src->s6_addr32[0], src->s6_addr32[1],
 		src->s6_addr32[2], src->s6_addr32[3],
-		ntohs(sk->sport),
+		ntohs(inet_sk(sk)->sport),
 		dest->s6_addr32[0], dest->s6_addr32[1],
 		dest->s6_addr32[2], dest->s6_addr32[3],
 		ntohs(req->rmt_port),
@@ -1924,13 +1933,14 @@ static void get_tcp6_sock(struct sock *sp, char *tmpbuf, int i)
 	__u16 destp, srcp;
 	int timer_active;
 	unsigned long timer_expires;
+	struct inet_opt *inet = inet_sk(sp);
 	struct tcp_opt *tp = tcp_sk(sp);
 	struct ipv6_pinfo *np = inet6_sk(sp);
 
 	dest  = &np->daddr;
 	src   = &np->rcv_saddr;
-	destp = ntohs(sp->dport);
-	srcp  = ntohs(sp->sport);
+	destp = ntohs(inet->dport);
+	srcp  = ntohs(inet->sport);
 	if (tp->pending == TCP_TIME_RETRANS) {
 		timer_active	= 1;
 		timer_expires	= tp->timeout;

net/ipv6/udp.c

@@ -65,11 +65,11 @@ static int udp_v6_get_port(struct sock *sk, unsigned short snum)
 		best_size_so_far = 32767;
 		best = result = udp_port_rover;
 		for (i = 0; i < UDP_HTABLE_SIZE; i++, result++) {
-			struct sock *sk;
+			struct sock *sk2;
 			int size;
 
-			sk = udp_hash[result & (UDP_HTABLE_SIZE - 1)];
-			if (!sk) {
+			sk2 = udp_hash[result & (UDP_HTABLE_SIZE - 1)];
+			if (!sk2) {
 				if (result > sysctl_local_port_range[1])
 					result = sysctl_local_port_range[0] +
 						((result - sysctl_local_port_range[0]) &
@@ -80,7 +80,7 @@ static int udp_v6_get_port(struct sock *sk, unsigned short snum)
 			do {
 				if (++size >= best_size_so_far)
 					goto next;
-			} while ((sk = sk->next) != NULL);
+			} while ((sk2 = sk2->next) != NULL);
 			best_size_so_far = size;
 			best = result;
 		next:;
@@ -104,23 +104,24 @@ static int udp_v6_get_port(struct sock *sk, unsigned short snum)
 		for (sk2 = udp_hash[snum & (UDP_HTABLE_SIZE - 1)];
 		     sk2 != NULL;
 		     sk2 = sk2->next) {
+			struct inet_opt *inet2 = inet_sk(sk2);
 			struct ipv6_pinfo *np2 = inet6_sk(sk2);
 
-			if (sk2->num == snum &&
+			if (inet2->num == snum &&
 			    sk2 != sk &&
 			    sk2->bound_dev_if == sk->bound_dev_if &&
-			    (!sk2->rcv_saddr ||
+			    (!inet2->rcv_saddr ||
 			     addr_type == IPV6_ADDR_ANY ||
 			     !ipv6_addr_cmp(&np->rcv_saddr, &np2->rcv_saddr) ||
 			     (addr_type == IPV6_ADDR_MAPPED &&
 			      sk2->family == AF_INET &&
-			      sk->rcv_saddr == sk2->rcv_saddr)) &&
+			      inet_sk(sk)->rcv_saddr == inet2->rcv_saddr)) &&
 			    (!sk2->reuse || !sk->reuse))
 				goto fail;
 		}
 	}
 
-	sk->num = snum;
+	inet_sk(sk)->num = snum;
 	if (sk->pprev == NULL) {
 		struct sock **skp = &udp_hash[snum & (UDP_HTABLE_SIZE - 1)];
 		if ((sk->next = *skp) != NULL)
@@ -151,7 +152,7 @@ static void udp_v6_unhash(struct sock *sk)
 			sk->next->pprev = sk->pprev;
 		*sk->pprev = sk->next;
 		sk->pprev = NULL;
-		sk->num = 0;
+		inet_sk(sk)->num = 0;
 		sock_prot_dec_use(sk->prot);
 		__sock_put(sk);
 	}
@@ -167,12 +168,13 @@ static struct sock *udp_v6_lookup(struct in6_addr *saddr, u16 sport,
 
  	read_lock(&udp_hash_lock);
 	for(sk = udp_hash[hnum & (UDP_HTABLE_SIZE - 1)]; sk != NULL; sk = sk->next) {
-		if((sk->num == hnum)		&&
-		   (sk->family == PF_INET6)) {
+		struct inet_opt *inet = inet_sk(sk);
+
+		if (inet->num == hnum && sk->family == PF_INET6) {
 			struct ipv6_pinfo *np = inet6_sk(sk);
 			int score = 0;
-			if(sk->dport) {
-				if(sk->dport != sport)
+			if (inet->dport) {
+				if (inet->dport != sport)
 					continue;
 				score++;
 			}
@@ -213,6 +215,7 @@ static struct sock *udp_v6_lookup(struct in6_addr *saddr, u16 sport,
 int udpv6_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 {
 	struct sockaddr_in6	*usin = (struct sockaddr_in6 *) uaddr;
+	struct inet_opt      	*inet = inet_sk(sk);
 	struct ipv6_pinfo      	*np = inet6_sk(sk);
 	struct in6_addr		*daddr;
 	struct in6_addr		saddr;
@@ -268,16 +271,16 @@ int udpv6_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 		if (err < 0)
 			return err;
 		
-		ipv6_addr_set(&np->daddr, 0, 0, htonl(0x0000ffff), sk->daddr);
+		ipv6_addr_set(&np->daddr, 0, 0, htonl(0x0000ffff), inet->daddr);
 
 		if (ipv6_addr_any(&np->saddr)) {
 			ipv6_addr_set(&np->saddr, 0, 0, htonl(0x0000ffff),
-				      sk->saddr);
+				      inet->saddr);
 		}
 
 		if (ipv6_addr_any(&np->rcv_saddr)) {
 			ipv6_addr_set(&np->rcv_saddr, 0, 0, htonl(0x0000ffff),
-				      sk->rcv_saddr);
+				      inet->rcv_saddr);
 		}
 		return 0;
 	}
@@ -300,7 +303,7 @@ int udpv6_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 	ipv6_addr_copy(&np->daddr, daddr);
 	np->flow_label = fl.fl6_flowlabel;
 
-	sk->dport = usin->sin6_port;
+	inet->dport = usin->sin6_port;
 
 	/*
 	 *	Check for a route to destination an obtain the
@@ -311,8 +314,8 @@ int udpv6_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 	fl.fl6_dst = &np->daddr;
 	fl.fl6_src = &saddr;
 	fl.oif = sk->bound_dev_if;
-	fl.uli_u.ports.dport = sk->dport;
-	fl.uli_u.ports.sport = sk->sport;
+	fl.uli_u.ports.dport = inet->dport;
+	fl.uli_u.ports.sport = inet->sport;
 
 	if (flowlabel) {
 		if (flowlabel->opt && flowlabel->opt->srcrt) {
@@ -344,7 +347,7 @@ int udpv6_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
 
 		if (ipv6_addr_any(&np->rcv_saddr)) {
 			ipv6_addr_copy(&np->rcv_saddr, &saddr);
-			sk->rcv_saddr = LOOPBACK4_IPV6;
+			inet->rcv_saddr = LOOPBACK4_IPV6;
 		}
 		sk->state = TCP_ESTABLISHED;
 	}
@@ -528,10 +531,12 @@ static struct sock *udp_v6_mcast_next(struct sock *sk,
 	struct sock *s = sk;
 	unsigned short num = ntohs(loc_port);
 	for(; s; s = s->next) {
-		if(s->num == num) {
+		struct inet_opt *inet = inet_sk(s);
+
+		if (inet->num == num) {
 			struct ipv6_pinfo *np = inet6_sk(s);
-			if(s->dport) {
-				if(s->dport != rmt_port)
+			if (inet->dport) {
+				if (inet->dport != rmt_port)
 					continue;
 			}
 			if (!ipv6_addr_any(&np->daddr) &&
@@ -757,6 +762,7 @@ static int udpv6_sendmsg(struct sock *sk, struct msghdr *msg, int ulen)
 {
 	struct ipv6_txoptions opt_space;
 	struct udpv6fakehdr udh;
+	struct inet_opt *inet = inet_sk(sk);
 	struct ipv6_pinfo *np = inet6_sk(sk);
 	struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) msg->msg_name;
 	struct ipv6_txoptions *opt = NULL;
@@ -818,7 +824,7 @@ static int udpv6_sendmsg(struct sock *sk, struct msghdr *msg, int ulen)
 		if (sk->state != TCP_ESTABLISHED)
 			return -ENOTCONN;
 
-		udh.uh.dest = sk->dport;
+		udh.uh.dest = inet->dport;
 		daddr = &np->daddr;
 		fl.fl6_flowlabel = np->flow_label;
 	}
@@ -867,7 +873,7 @@ static int udpv6_sendmsg(struct sock *sk, struct msghdr *msg, int ulen)
 	if (opt && opt->srcrt)
 		udh.daddr = daddr;
 
-	udh.uh.source = sk->sport;
+	udh.uh.source = inet->sport;
 	udh.uh.len = len < 0x10000 ? htons(len) : 0;
 	udh.uh.check = 0;
 	udh.iov = msg->msg_iov;
@@ -905,14 +911,15 @@ static struct inet6_protocol udpv6_protocol = {
 
 static void get_udp6_sock(struct sock *sp, char *tmpbuf, int i)
 {
+	struct inet_opt *inet = inet_sk(sp);
 	struct ipv6_pinfo *np = inet6_sk(sp);
 	struct in6_addr *dest, *src;
 	__u16 destp, srcp;
 
 	dest  = &np->daddr;
 	src   = &np->rcv_saddr;
-	destp = ntohs(sp->dport);
-	srcp  = ntohs(sp->sport);
+	destp = ntohs(inet->dport);
+	srcp  = ntohs(inet->sport);
 	sprintf(tmpbuf,
 		"%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
 		"%02X %08X:%08X %02X:%08lX %08X %5d %8d %ld %d %p",

net/packet/af_packet.c

@@ -180,6 +180,7 @@ struct packet_opt
 	spinlock_t		bind_lock;
 	char			running;	/* prot_hook is attached*/
 	int			ifindex;	/* bound device		*/
+	unsigned short		num;
 	struct tpacket_stats	stats;
 #ifdef CONFIG_PACKET_MULTICAST
 	struct packet_mclist	*mclist;
@@ -678,8 +679,10 @@ static int packet_sendmsg(struct socket *sock, struct msghdr *msg, int len,
 	 */
 	 
 	if (saddr == NULL) {
-		ifindex	= pkt_sk(sk)->ifindex;
-		proto	= sk->num;
+		struct packet_opt *po = pkt_sk(sk);
+
+		ifindex	= po->ifindex;
+		proto	= po->num;
 		addr	= NULL;
 	} else {
 		err = -EINVAL;
@@ -839,7 +842,7 @@ static int packet_do_bind(struct sock *sk, struct net_device *dev, int protocol)
 		po->running = 0;
 	}
 
-	sk->num = protocol;
+	po->num = protocol;
 	po->prot_hook.type = protocol;
 	po->prot_hook.dev = dev;
 
@@ -894,7 +897,7 @@ static int packet_bind_spkt(struct socket *sock, struct sockaddr *uaddr, int add
 
 	dev = dev_get_by_name(name);
 	if (dev) {
-		err = packet_do_bind(sk, dev, sk->num);
+		err = packet_do_bind(sk, dev, pkt_sk(sk)->num);
 		dev_put(dev);
 	}
 	return err;
@@ -924,7 +927,7 @@ static int packet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len
 		if (dev == NULL)
 			goto out;
 	}
-	err = packet_do_bind(sk, dev, sll->sll_protocol ? : sk->num);
+	err = packet_do_bind(sk, dev, sll->sll_protocol ? : pkt_sk(sk)->num);
 	if (dev)
 		dev_put(dev);
 
@@ -972,7 +975,7 @@ static int packet_create(struct socket *sock, int protocol)
 		goto out_free;
 	memset(po, 0, sizeof(*po));
 	sk->family = PF_PACKET;
-	sk->num = protocol;
+	po->num = protocol;
 
 	sk->destruct = packet_sock_destruct;
 	atomic_inc(&packet_socks_nr);
@@ -1131,7 +1134,7 @@ static int packet_getname(struct socket *sock, struct sockaddr *uaddr,
 
 	sll->sll_family = AF_PACKET;
 	sll->sll_ifindex = po->ifindex;
-	sll->sll_protocol = sk->num;
+	sll->sll_protocol = po->num;
 	dev = dev_get_by_index(po->ifindex);
 	if (dev) {
 		sll->sll_hatype = dev->type;
@@ -1410,7 +1413,8 @@ static int packet_notifier(struct notifier_block *this, unsigned long msg, void
 			break;
 		case NETDEV_UP:
 			spin_lock(&po->bind_lock);
-			if (dev->ifindex == po->ifindex && sk->num && po->running==0) {
+			if (dev->ifindex == po->ifindex && po->num &&
+			    !po->running) {
 				dev_add_pack(&po->prot_hook);
 				sock_hold(sk);
 				po->running = 1;
@@ -1861,7 +1865,7 @@ static int packet_read_proc(char *buffer, char **start, off_t offset,
 			     s,
 			     atomic_read(&s->refcnt),
 			     s->type,
-			     ntohs(s->num),
+			     ntohs(po->num),
 			     po->ifindex,
 			     po->running,
 			     atomic_read(&s->rmem_alloc),

net/sunrpc/svcsock.c

@@ -1161,7 +1161,8 @@ if (svsk->sk_sk == NULL)
 
 	/* Register socket with portmapper */
 	if (*errp >= 0 && pmap_register)
-		*errp = svc_register(serv, inet->protocol, ntohs(inet->sport));
+		*errp = svc_register(serv, inet->protocol,
+				     ntohs(inet_sk(inet)->sport));
 
 	if (*errp < 0) {
 		inet->user_data = NULL;