[SK_BUFF]: Introduce skb_transport_header(skb)

For the places where we need a pointer to the transport header, it is
still legal to touch skb->h.raw directly if just adding to,
subtracting from or setting it to another layer header.
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/appletalk/ltpc.c

@@ -917,6 +917,7 @@ static int ltpc_xmit(struct sk_buff *skb, struct net_device *dev)
 
 	int i;
 	struct lt_sendlap cbuf;
+	unsigned char *hdr;
 
 	cbuf.command = LT_SENDLAP;
 	cbuf.dnode = skb->data[0];
@@ -932,11 +933,13 @@ static int ltpc_xmit(struct sk_buff *skb, struct net_device *dev)
 		printk("\n");
 	}
 
-	do_write(dev,&cbuf,sizeof(cbuf),skb->h.raw,skb->len);
+	hdr = skb_transport_header(skb);
+	do_write(dev, &cbuf, sizeof(cbuf), hdr, skb->len);
 
 	if(debug & DEBUG_UPPER) {
 		printk("sent %d ddp bytes\n",skb->len);
-		for(i=0;i<skb->len;i++) printk("%02x ",skb->h.raw[i]);
+		for (i = 0; i < skb->len; i++)
+			printk("%02x ", hdr[i]);
 		printk("\n");
 	}
 

drivers/net/cxgb3/sge.c

@@ -1324,12 +1324,14 @@ static void write_ofld_wr(struct adapter *adap, struct sk_buff *skb,
 
 	flits = skb_transport_offset(skb) / 8;
 	sgp = ndesc == 1 ? (struct sg_ent *)&d->flit[flits] : sgl;
-	sgl_flits = make_sgl(skb, sgp, skb->h.raw, skb->tail - skb->h.raw,
+	sgl_flits = make_sgl(skb, sgp, skb_transport_header(skb),
+			     skb->tail - skb_transport_header(skb),
 			     adap->pdev);
 	if (need_skb_unmap()) {
 		setup_deferred_unmapping(skb, adap->pdev, sgp, sgl_flits);
 		skb->destructor = deferred_unmap_destructor;
-		((struct unmap_info *)skb->cb)->len = skb->tail - skb->h.raw;
+		((struct unmap_info *)skb->cb)->len = (skb->tail -
+						       skb_transport_header(skb));
 	}
 
 	write_wr_hdr_sgl(ndesc, skb, d, pidx, q, sgl, flits, sgl_flits,
@@ -1351,7 +1353,7 @@ static inline unsigned int calc_tx_descs_ofld(const struct sk_buff *skb)
 		return 1;	/* packet fits as immediate data */
 
 	flits = skb_transport_offset(skb) / 8;	/* headers */
-	if (skb->tail != skb->h.raw)
+	if (skb->tail != skb_transport_header(skb))
 		cnt++;
 	return flits_to_desc(flits + sgl_len(cnt));
 }

drivers/s390/net/qeth_eddp.c

@@ -476,13 +476,13 @@ qeth_eddp_fill_context_tcp(struct qeth_eddp_context *ctx,
 		eddp = qeth_eddp_create_eddp_data(qhdr,
 						  skb_network_header(skb),
 						  ip_hdrlen(skb),
-						  skb->h.raw,
+						  skb_transport_header(skb),
 						  tcp_hdrlen(skb));
 	else
 		eddp = qeth_eddp_create_eddp_data(qhdr,
 						  skb_network_header(skb),
 						  sizeof(struct ipv6hdr),
-						  skb->h.raw,
+						  skb_transport_header(skb),
 						  tcp_hdrlen(skb));
 
 	if (eddp == NULL) {

include/linux/atalk.h

@@ -101,7 +101,7 @@ struct ddpehdr {
 
 static __inline__ struct ddpehdr *ddp_hdr(struct sk_buff *skb)
 {
-	return (struct ddpehdr *)skb->h.raw;
+	return (struct ddpehdr *)skb_transport_header(skb);
 }
 
 /* AppleTalk AARP headers */
@@ -129,7 +129,7 @@ struct elapaarp {
 
 static __inline__ struct elapaarp *aarp_hdr(struct sk_buff *skb)
 {
-	return (struct elapaarp *)skb->h.raw;
+	return (struct elapaarp *)skb_transport_header(skb);
 }
 
 /* Not specified - how long till we drop a resolved entry */

include/linux/dccp.h

@@ -260,19 +260,20 @@ enum {
 
 static inline struct dccp_hdr *dccp_hdr(const struct sk_buff *skb)
 {
-	return (struct dccp_hdr *)skb->h.raw;
+	return (struct dccp_hdr *)skb_transport_header(skb);
 }
 
 static inline struct dccp_hdr *dccp_zeroed_hdr(struct sk_buff *skb, int headlen)
 {
 	skb_push(skb, headlen);
 	skb_reset_transport_header(skb);
-	return memset(skb->h.raw, 0, headlen);
+	return memset(skb_transport_header(skb), 0, headlen);
 }
 
 static inline struct dccp_hdr_ext *dccp_hdrx(const struct sk_buff *skb)
 {
-	return (struct dccp_hdr_ext *)(skb->h.raw + sizeof(struct dccp_hdr));
+	return (struct dccp_hdr_ext *)(skb_transport_header(skb) +
+				       sizeof(struct dccp_hdr));
 }
 
 static inline unsigned int __dccp_basic_hdr_len(const struct dccp_hdr *dh)
@@ -301,12 +302,14 @@ static inline __u64 dccp_hdr_seq(const struct sk_buff *skb)
 
 static inline struct dccp_hdr_request *dccp_hdr_request(struct sk_buff *skb)
 {
-	return (struct dccp_hdr_request *)(skb->h.raw + dccp_basic_hdr_len(skb));
+	return (struct dccp_hdr_request *)(skb_transport_header(skb) +
+					   dccp_basic_hdr_len(skb));
 }
 
 static inline struct dccp_hdr_ack_bits *dccp_hdr_ack_bits(const struct sk_buff *skb)
 {
-	return (struct dccp_hdr_ack_bits *)(skb->h.raw + dccp_basic_hdr_len(skb));
+	return (struct dccp_hdr_ack_bits *)(skb_transport_header(skb) +
+					    dccp_basic_hdr_len(skb));
 }
 
 static inline u64 dccp_hdr_ack_seq(const struct sk_buff *skb)
@@ -317,12 +320,14 @@ static inline u64 dccp_hdr_ack_seq(const struct sk_buff *skb)
 
 static inline struct dccp_hdr_response *dccp_hdr_response(struct sk_buff *skb)
 {
-	return (struct dccp_hdr_response *)(skb->h.raw + dccp_basic_hdr_len(skb));
+	return (struct dccp_hdr_response *)(skb_transport_header(skb) +
+					    dccp_basic_hdr_len(skb));
 }
 
 static inline struct dccp_hdr_reset *dccp_hdr_reset(struct sk_buff *skb)
 {
-	return (struct dccp_hdr_reset *)(skb->h.raw + dccp_basic_hdr_len(skb));
+	return (struct dccp_hdr_reset *)(skb_transport_header(skb) +
+					 dccp_basic_hdr_len(skb));
 }
 
 static inline unsigned int __dccp_hdr_len(const struct dccp_hdr *dh)

include/linux/icmp.h

@@ -87,7 +87,7 @@ struct icmphdr {
 
 static inline struct icmphdr *icmp_hdr(const struct sk_buff *skb)
 {
-	return (struct icmphdr *)skb->h.raw;
+	return (struct icmphdr *)skb_transport_header(skb);
 }
 #endif
 

include/linux/icmpv6.h

@@ -80,7 +80,7 @@ struct icmp6hdr {
 
 static inline struct icmp6hdr *icmp6_hdr(const struct sk_buff *skb)
 {
-	return (struct icmp6hdr *)skb->h.raw;
+	return (struct icmp6hdr *)skb_transport_header(skb);
 }
 #endif
 

include/linux/igmp.h

@@ -85,19 +85,19 @@ struct igmpv3_query {
 
 static inline struct igmphdr *igmp_hdr(const struct sk_buff *skb)
 {
-	return (struct igmphdr *)skb->h.raw;
+	return (struct igmphdr *)skb_transport_header(skb);
 }
 
 static inline struct igmpv3_report *
 			igmpv3_report_hdr(const struct sk_buff *skb)
 {
-	return (struct igmpv3_report *)skb->h.raw;
+	return (struct igmpv3_report *)skb_transport_header(skb);
 }
 
 static inline struct igmpv3_query *
 			igmpv3_query_hdr(const struct sk_buff *skb)
 {
-	return (struct igmpv3_query *)skb->h.raw;
+	return (struct igmpv3_query *)skb_transport_header(skb);
 }
 #endif
 

include/linux/ip.h

@@ -114,7 +114,7 @@ static inline struct iphdr *ip_hdr(const struct sk_buff *skb)
 
 static inline struct iphdr *ipip_hdr(const struct sk_buff *skb)
 {
-	return (struct iphdr *)skb->h.raw;
+	return (struct iphdr *)skb_transport_header(skb);
 }
 #endif
 

include/linux/ipv6.h

@@ -230,7 +230,7 @@ static inline struct ipv6hdr *ipv6_hdr(const struct sk_buff *skb)
 
 static inline struct ipv6hdr *ipipv6_hdr(const struct sk_buff *skb)
 {
-	return (struct ipv6hdr *)skb->h.raw;
+	return (struct ipv6hdr *)skb_transport_header(skb);
 }
 
 /* 

include/linux/sctp.h

@@ -68,7 +68,7 @@ typedef struct sctphdr {
 
 static inline struct sctphdr *sctp_hdr(const struct sk_buff *skb)
 {
-	return (struct sctphdr *)skb->h.raw;
+	return (struct sctphdr *)skb_transport_header(skb);
 }
 #endif
 

include/linux/skbuff.h

@@ -951,6 +951,11 @@ static inline void skb_reserve(struct sk_buff *skb, int len)
 	skb->tail += len;
 }
 
+static inline unsigned char *skb_transport_header(const struct sk_buff *skb)
+{
+	return skb->h.raw;
+}
+
 static inline void skb_reset_transport_header(struct sk_buff *skb)
 {
 	skb->h.raw = skb->data;

include/linux/tcp.h

@@ -180,7 +180,7 @@ struct tcp_md5sig {
 
 static inline struct tcphdr *tcp_hdr(const struct sk_buff *skb)
 {
-	return (struct tcphdr *)skb->h.raw;
+	return (struct tcphdr *)skb_transport_header(skb);
 }
 
 static inline unsigned int tcp_hdrlen(const struct sk_buff *skb)

include/linux/udp.h

@@ -31,7 +31,7 @@ struct udphdr {
 
 static inline struct udphdr *udp_hdr(const struct sk_buff *skb)
 {
-	return (struct udphdr *)skb->h.raw;
+	return (struct udphdr *)skb_transport_header(skb);
 }
 #endif
 

include/net/ipx.h

@@ -43,7 +43,7 @@ struct ipxhdr {
 
 static __inline__ struct ipxhdr *ipx_hdr(struct sk_buff *skb)
 {
-	return (struct ipxhdr *)skb->h.raw;
+	return (struct ipxhdr *)skb_transport_header(skb);
 }
 
 struct ipx_interface {

include/net/pkt_cls.h

@@ -328,7 +328,7 @@ static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer)
 		case TCF_LAYER_NETWORK:
 			return skb_network_header(skb);
 		case TCF_LAYER_TRANSPORT:
-			return skb->h.raw;
+			return skb_transport_header(skb);
 	}
 
 	return NULL;

include/net/udp.h

@@ -89,8 +89,8 @@ static inline int udp_lib_checksum_complete(struct sk_buff *skb)
  */
 static inline __wsum udp_csum_outgoing(struct sock *sk, struct sk_buff *skb)
 {
-	__wsum csum = csum_partial(skb->h.raw, sizeof(struct udphdr), 0);
-
+	__wsum csum = csum_partial(skb_transport_header(skb),
+				   sizeof(struct udphdr), 0);
 	skb_queue_walk(&sk->sk_write_queue, skb) {
 		csum = csum_add(csum, skb->csum);
 	}

net/802/psnap.c

@@ -56,7 +56,7 @@ static int snap_rcv(struct sk_buff *skb, struct net_device *dev,
 	};
 
 	rcu_read_lock();
-	proto = find_snap_client(skb->h.raw);
+	proto = find_snap_client(skb_transport_header(skb));
 	if (proto) {
 		/* Pass the frame on. */
 		skb->h.raw  += 5;

net/ax25/af_ax25.c

@@ -1585,9 +1585,10 @@ static int ax25_sendmsg(struct kiocb *iocb, struct socket *sock,
 
 	skb_set_transport_header(skb, lv);
 
-	SOCK_DEBUG(sk, "base=%p pos=%p\n", skb->data, skb->h.raw);
+	SOCK_DEBUG(sk, "base=%p pos=%p\n",
+		   skb->data, skb_transport_header(skb));
 
-	*skb->h.raw = AX25_UI;
+	*skb_transport_header(skb) = AX25_UI;
 
 	/* Datagram frames go straight out of the door as UI */
 	ax25_queue_xmit(skb, ax25->ax25_dev->dev);

net/bluetooth/hci_core.c

@@ -1076,7 +1076,7 @@ static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags)
 
 	skb_push(skb, HCI_ACL_HDR_SIZE);
 	skb_reset_transport_header(skb);
-	hdr = (struct hci_acl_hdr *)skb->h.raw;
+	hdr = (struct hci_acl_hdr *)skb_transport_header(skb);
 	hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags));
 	hdr->dlen   = cpu_to_le16(len);
 }
@@ -1145,7 +1145,7 @@ int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb)
 
 	skb_push(skb, HCI_SCO_HDR_SIZE);
 	skb_reset_transport_header(skb);
-	memcpy(skb->h.raw, &hdr, HCI_SCO_HDR_SIZE);
+	memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE);
 
 	skb->dev = (void *) hdev;
 	bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;

net/core/dev.c

@@ -1175,12 +1175,12 @@ int skb_checksum_help(struct sk_buff *skb)
 	BUG_ON(offset > (int)skb->len);
 	csum = skb_checksum(skb, offset, skb->len-offset, 0);
 
-	offset = skb->tail - skb->h.raw;
+	offset = skb->tail - skb_transport_header(skb);
 	BUG_ON(offset <= 0);
 	BUG_ON(skb->csum_offset + 2 > offset);
 
-	*(__sum16*)(skb->h.raw + skb->csum_offset) = csum_fold(csum);
-
+	*(__sum16 *)(skb_transport_header(skb) +
+		     skb->csum_offset) = csum_fold(csum);
 out_set_summed:
 	skb->ip_summed = CHECKSUM_NONE;
 out:

net/econet/af_econet.c

@@ -943,7 +943,7 @@ static void aun_data_available(struct sock *sk, int slen)
 		printk(KERN_DEBUG "AUN: recvfrom() error %d\n", -err);
 	}
 
-	data = skb->h.raw + sizeof(struct udphdr);
+	data = skb_transport_header(skb) + sizeof(struct udphdr);
 	ah = (struct aunhdr *)data;
 	len = skb->len - sizeof(struct udphdr);
 	ip = ip_hdr(skb);

net/ipv4/igmp.c

@@ -348,7 +348,7 @@ static int igmpv3_sendpack(struct sk_buff *skb)
 	struct iphdr *pip = ip_hdr(skb);
 	struct igmphdr *pig = igmp_hdr(skb);
 	const int iplen = skb->tail - skb->nh.raw;
-	const int igmplen = skb->tail - skb->h.raw;
+	const int igmplen = skb->tail - skb_transport_header(skb);
 
 	pip->tot_len = htons(iplen);
 	ip_send_check(pip);

net/ipv4/ip_gre.c

@@ -619,7 +619,7 @@ static int ipgre_rcv(struct sk_buff *skb)
 		skb_reset_mac_header(skb);
 		__pskb_pull(skb, offset);
 		skb_reset_network_header(skb);
-		skb_postpull_rcsum(skb, skb->h.raw, offset);
+		skb_postpull_rcsum(skb, skb_transport_header(skb), offset);
 		skb->pkt_type = PACKET_HOST;
 #ifdef CONFIG_NET_IPGRE_BROADCAST
 		if (MULTICAST(iph->daddr)) {

net/ipv4/ip_output.c

@@ -1128,7 +1128,7 @@ ssize_t	ip_append_page(struct sock *sk, struct page *page,
 			if (fraggap) {
 				skb->csum = skb_copy_and_csum_bits(skb_prev,
 								   maxfraglen,
-								   skb->h.raw,
+						    skb_transport_header(skb),
 								   fraggap, 0);
 				skb_prev->csum = csum_sub(skb_prev->csum,
 							  skb->csum);
@@ -1374,7 +1374,9 @@ void ip_send_reply(struct sock *sk, struct sk_buff *skb, struct ip_reply_arg *ar
 		       &ipc, rt, MSG_DONTWAIT);
 	if ((skb = skb_peek(&sk->sk_write_queue)) != NULL) {
 		if (arg->csumoffset >= 0)
-			*((__sum16 *)skb->h.raw + arg->csumoffset) = csum_fold(csum_add(skb->csum, arg->csum));
+			*((__sum16 *)skb_transport_header(skb) +
+			  arg->csumoffset) = csum_fold(csum_add(skb->csum,
+								arg->csum));
 		skb->ip_summed = CHECKSUM_NONE;
 		ip_push_pending_frames(sk);
 	}

net/ipv4/ipconfig.c

@@ -432,7 +432,7 @@ ic_rarp_recv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt
 		goto drop;
 
 	/* Basic sanity checks can be done without the lock.  */
-	rarp = (struct arphdr *)skb->h.raw;
+	rarp = (struct arphdr *)skb_transport_header(skb);
 
 	/* If this test doesn't pass, it's not IP, or we should
 	 * ignore it anyway.
@@ -455,7 +455,7 @@ ic_rarp_recv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt
 		goto drop;
 
 	/* OK, it is all there and looks valid, process... */
-	rarp = (struct arphdr *)skb->h.raw;
+	rarp = (struct arphdr *)skb_transport_header(skb);
 	rarp_ptr = (unsigned char *) (rarp + 1);
 
 	/* One reply at a time, please. */

net/ipv4/ipmr.c

@@ -1437,7 +1437,8 @@ int pim_rcv_v1(struct sk_buff * skb)
 	    pim->group != PIM_V1_VERSION || pim->code != PIM_V1_REGISTER)
 		goto drop;
 
-	encap = (struct iphdr*)(skb->h.raw + sizeof(struct igmphdr));
+	encap = (struct iphdr *)(skb_transport_header(skb) +
+				 sizeof(struct igmphdr));
 	/*
 	   Check that:
 	   a. packet is really destinted to a multicast group
@@ -1490,7 +1491,7 @@ static int pim_rcv(struct sk_buff * skb)
 	if (!pskb_may_pull(skb, sizeof(*pim) + sizeof(*encap)))
 		goto drop;
 
-	pim = (struct pimreghdr*)skb->h.raw;
+	pim = (struct pimreghdr *)skb_transport_header(skb);
 	if (pim->type != ((PIM_VERSION<<4)|(PIM_REGISTER)) ||
 	    (pim->flags&PIM_NULL_REGISTER) ||
 	    (ip_compute_csum((void *)pim, sizeof(*pim)) != 0 &&
@@ -1498,7 +1499,8 @@ static int pim_rcv(struct sk_buff * skb)
 		goto drop;
 
 	/* check if the inner packet is destined to mcast group */
-	encap = (struct iphdr*)(skb->h.raw + sizeof(struct pimreghdr));
+	encap = (struct iphdr *)(skb_transport_header(skb) +
+				 sizeof(struct pimreghdr));
 	if (!MULTICAST(encap->daddr) ||
 	    encap->tot_len == 0 ||
 	    ntohs(encap->tot_len) + sizeof(*pim) > skb->len)

net/ipv4/tcp.c

@@ -2219,8 +2219,9 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb, int features)
 		th->check = ~csum_fold((__force __wsum)((__force u32)th->check +
 				       (__force u32)delta));
 		if (skb->ip_summed != CHECKSUM_PARTIAL)
-			th->check = csum_fold(csum_partial(skb->h.raw, thlen,
-							   skb->csum));
+			th->check =
+			     csum_fold(csum_partial(skb_transport_header(skb),
+						    thlen, skb->csum));
 
 		seq += len;
 		skb = skb->next;
@@ -2230,12 +2231,13 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb, int features)
 		th->cwr = 0;
 	} while (skb->next);
 
-	delta = htonl(oldlen + (skb->tail - skb->h.raw) + skb->data_len);
+	delta = htonl(oldlen + (skb->tail - skb_transport_header(skb)) +
+		      skb->data_len);
 	th->check = ~csum_fold((__force __wsum)((__force u32)th->check +
 				(__force u32)delta));
 	if (skb->ip_summed != CHECKSUM_PARTIAL)
-		th->check = csum_fold(csum_partial(skb->h.raw, thlen,
-						   skb->csum));
+		th->check = csum_fold(csum_partial(skb_transport_header(skb),
+						   thlen, skb->csum));
 
 out:
 	return segs;

net/ipv4/tcp_input.c

@@ -140,7 +140,7 @@ static void tcp_measure_rcv_mss(struct sock *sk,
 		 *
 		 * "len" is invariant segment length, including TCP header.
 		 */
-		len += skb->data - skb->h.raw;
+		len += skb->data - skb_transport_header(skb);
 		if (len >= TCP_MIN_RCVMSS + sizeof(struct tcphdr) ||
 		    /* If PSH is not set, packet should be
 		     * full sized, provided peer TCP is not badly broken.
@@ -940,7 +940,8 @@ tcp_sacktag_write_queue(struct sock *sk, struct sk_buff *ack_skb, u32 prior_snd_
 {
 	const struct inet_connection_sock *icsk = inet_csk(sk);
 	struct tcp_sock *tp = tcp_sk(sk);
-	unsigned char *ptr = ack_skb->h.raw + TCP_SKB_CB(ack_skb)->sacked;
+	unsigned char *ptr = (skb_transport_header(ack_skb) +
+			      TCP_SKB_CB(ack_skb)->sacked);
 	struct tcp_sack_block_wire *sp = (struct tcp_sack_block_wire *)(ptr+2);
 	struct sk_buff *cached_skb;
 	int num_sacks = (ptr[1] - TCPOLEN_SACK_BASE)>>3;
@@ -3634,10 +3635,10 @@ tcp_collapse(struct sock *sk, struct sk_buff_head *list,
 			return;
 
 		skb_set_mac_header(nskb, skb_mac_header(skb) - skb->head);
-		skb_set_network_header(nskb,
-				       skb_network_header(skb) - skb->head);
-		skb_set_transport_header(nskb, skb->h.raw - skb->head);
-
+		skb_set_network_header(nskb, (skb_network_header(skb) -
+					      skb->head));
+		skb_set_transport_header(nskb, (skb_transport_header(skb) -
+						skb->head));
 		skb_reserve(nskb, header);
 		memcpy(nskb->head, skb->head, header);
 		memcpy(nskb->cb, skb->cb, sizeof(skb->cb));

net/ipv4/xfrm4_mode_beet.c

@@ -51,7 +51,7 @@ static int xfrm4_beet_output(struct xfrm_state *x, struct sk_buff *skb)
 
 		BUG_ON(optlen < 0);
 
-		ph = (struct ip_beet_phdr *)skb->h.raw;
+		ph = (struct ip_beet_phdr *)skb_transport_header(skb);
 		ph->padlen = 4 - (optlen & 4);
 		ph->hdrlen = optlen / 8;
 		ph->nexthdr = top_iph->protocol;

net/ipv4/xfrm4_mode_transport.c

@@ -45,10 +45,11 @@ static int xfrm4_transport_output(struct xfrm_state *x, struct sk_buff *skb)
  */
 static int xfrm4_transport_input(struct xfrm_state *x, struct sk_buff *skb)
 {
-	int ihl = skb->data - skb->h.raw;
+	int ihl = skb->data - skb_transport_header(skb);
 
 	if (skb->h.raw != skb->nh.raw) {
-		memmove(skb->h.raw, skb_network_header(skb), ihl);
+		memmove(skb_transport_header(skb),
+			skb_network_header(skb), ihl);
 		skb->nh.raw = skb->h.raw;
 	}
 	ip_hdr(skb)->tot_len = htons(skb->len + ihl);

net/ipv6/ah6.c

@@ -268,7 +268,7 @@ static int ah6_output(struct xfrm_state *x, struct sk_buff *skb)
 			goto error_free_iph;
 	}
 
-	ah = (struct ip_auth_hdr *)skb->h.raw;
+	ah = (struct ip_auth_hdr *)skb_transport_header(skb);
 	ah->nexthdr = nexthdr;
 
 	top_iph->priority    = 0;

net/ipv6/esp6.c

@@ -87,7 +87,7 @@ static int esp6_output(struct xfrm_state *x, struct sk_buff *skb)
 	pskb_put(skb, trailer, clen - skb->len);
 
 	top_iph = (struct ipv6hdr *)__skb_push(skb, hdr_len);
-	esph = (struct ipv6_esp_hdr *)skb->h.raw;
+	esph = (struct ipv6_esp_hdr *)skb_transport_header(skb);
 	top_iph->payload_len = htons(skb->len + alen - sizeof(*top_iph));
 	*(u8 *)(trailer->tail - 1) = *skb_network_header(skb);
 	*skb_network_header(skb) = IPPROTO_ESP;

net/ipv6/exthdrs.c

@@ -144,7 +144,7 @@ static int ip6_parse_tlv(struct tlvtype_proc *procs, struct sk_buff **skbp)
 	struct tlvtype_proc *curr;
 	const unsigned char *nh = skb_network_header(skb);
 	int off = skb->h.raw - skb->nh.raw;
-	int len = ((skb->h.raw[1]+1)<<3);
+	int len = (skb_transport_header(skb)[1] + 1) << 3;
 
 	if (skb_transport_offset(skb) + len > skb_headlen(skb))
 		goto bad;
@@ -290,15 +290,14 @@ static int ipv6_destopt_rcv(struct sk_buff **skbp)
 
 	if (!pskb_may_pull(skb, skb_transport_offset(skb) + 8) ||
 	    !pskb_may_pull(skb, (skb_transport_offset(skb) +
-				 ((skb->h.raw[1] + 1) << 3)))) {
+				 ((skb_transport_header(skb)[1] + 1) << 3)))) {
 		IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
 				 IPSTATS_MIB_INHDRERRORS);
 		kfree_skb(skb);
 		return -1;
 	}
 
-	opt->lastopt = skb->h.raw - skb->nh.raw;
-	opt->dst1 = skb->h.raw - skb->nh.raw;
+	opt->lastopt = opt->dst1 = skb->h.raw - skb->nh.raw;
 #ifdef CONFIG_IPV6_MIP6
 	dstbuf = opt->dst1;
 #endif
@@ -307,7 +306,7 @@ static int ipv6_destopt_rcv(struct sk_buff **skbp)
 	if (ip6_parse_tlv(tlvprocdestopt_lst, skbp)) {
 		dst_release(dst);
 		skb = *skbp;
-		skb->h.raw += ((skb->h.raw[1]+1)<<3);
+		skb->h.raw += (skb_transport_header(skb)[1] + 1) << 3;
 		opt = IP6CB(skb);
 #ifdef CONFIG_IPV6_MIP6
 		opt->nhoff = dstbuf;
@@ -390,14 +389,14 @@ static int ipv6_rthdr_rcv(struct sk_buff **skbp)
 
 	if (!pskb_may_pull(skb, skb_transport_offset(skb) + 8) ||
 	    !pskb_may_pull(skb, (skb_transport_offset(skb) +
-				 ((skb->h.raw[1] + 1) << 3)))) {
+				 ((skb_transport_header(skb)[1] + 1) << 3)))) {
 		IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
 				 IPSTATS_MIB_INHDRERRORS);
 		kfree_skb(skb);
 		return -1;
 	}
 
-	hdr = (struct ipv6_rt_hdr *) skb->h.raw;
+	hdr = (struct ipv6_rt_hdr *)skb_transport_header(skb);
 
 	switch (hdr->type) {
 #ifdef CONFIG_IPV6_MIP6
@@ -444,8 +443,7 @@ static int ipv6_rthdr_rcv(struct sk_buff **skbp)
 			break;
 		}
 
-		opt->lastopt = skb->h.raw - skb->nh.raw;
-		opt->srcrt = skb->h.raw - skb->nh.raw;
+		opt->lastopt = opt->srcrt = skb->h.raw - skb->nh.raw;
 		skb->h.raw += (hdr->hdrlen + 1) << 3;
 		opt->dst0 = opt->dst1;
 		opt->dst1 = 0;
@@ -745,7 +743,8 @@ int ipv6_parse_hopopts(struct sk_buff **skbp)
 	 * hop-by-hop options.
 	 */
 	if (!pskb_may_pull(skb, sizeof(struct ipv6hdr) + 8) ||
-	    !pskb_may_pull(skb, sizeof(struct ipv6hdr) + ((skb->h.raw[1] + 1) << 3))) {
+	    !pskb_may_pull(skb, (sizeof(struct ipv6hdr) +
+				 ((skb_transport_header(skb)[1] + 1) << 3)))) {
 		kfree_skb(skb);
 		return -1;
 	}
@@ -753,7 +752,7 @@ int ipv6_parse_hopopts(struct sk_buff **skbp)
 	opt->hop = sizeof(struct ipv6hdr);
 	if (ip6_parse_tlv(tlvprochopopt_lst, skbp)) {
 		skb = *skbp;
-		skb->h.raw += (skb->h.raw[1]+1)<<3;
+		skb->h.raw += (skb_transport_header(skb)[1] + 1) << 3;
 		opt = IP6CB(skb);
 		opt->nhoff = sizeof(struct ipv6hdr);
 		return 1;

net/ipv6/ipcomp6.c

@@ -143,7 +143,7 @@ static int ipcomp6_output(struct xfrm_state *x, struct sk_buff *skb)
 	/* compression */
 	plen = skb->len - hdr_len;
 	dlen = IPCOMP_SCRATCH_SIZE;
-	start = skb->h.raw;
+	start = skb_transport_header(skb);
 
 	cpu = get_cpu();
 	scratch = *per_cpu_ptr(ipcomp6_scratches, cpu);

net/ipv6/mcast.c

@@ -1212,7 +1212,7 @@ int igmp6_event_query(struct sk_buff *skb)
 			in6_dev_put(idev);
 			return -EINVAL;
 		}
-		mlh2 = (struct mld2_query *) skb->h.raw;
+		mlh2 = (struct mld2_query *)skb_transport_header(skb);
 		max_delay = (MLDV2_MRC(ntohs(mlh2->mrc))*HZ)/1000;
 		if (!max_delay)
 			max_delay = 1;
@@ -1235,7 +1235,7 @@ int igmp6_event_query(struct sk_buff *skb)
 				in6_dev_put(idev);
 				return -EINVAL;
 			}
-			mlh2 = (struct mld2_query *) skb->h.raw;
+			mlh2 = (struct mld2_query *)skb_transport_header(skb);
 			mark = 1;
 		}
 	} else {
@@ -1460,18 +1460,20 @@ static inline int mld_dev_queue_xmit(struct sk_buff *skb)
 static void mld_sendpack(struct sk_buff *skb)
 {
 	struct ipv6hdr *pip6 = ipv6_hdr(skb);
-	struct mld2_report *pmr = (struct mld2_report *)skb->h.raw;
+	struct mld2_report *pmr =
+			      (struct mld2_report *)skb_transport_header(skb);
 	int payload_len, mldlen;
 	struct inet6_dev *idev = in6_dev_get(skb->dev);
 	int err;
 
 	IP6_INC_STATS(idev, IPSTATS_MIB_OUTREQUESTS);
 	payload_len = skb->tail - skb_network_header(skb) - sizeof(*pip6);
-	mldlen = skb->tail - skb->h.raw;
+	mldlen = skb->tail - skb_transport_header(skb);
 	pip6->payload_len = htons(payload_len);
 
 	pmr->csum = csum_ipv6_magic(&pip6->saddr, &pip6->daddr, mldlen,
-		IPPROTO_ICMPV6, csum_partial(skb->h.raw, mldlen, 0));
+		IPPROTO_ICMPV6, csum_partial(skb_transport_header(skb),
+					     mldlen, 0));
 	err = NF_HOOK(PF_INET6, NF_IP6_LOCAL_OUT, skb, NULL, skb->dev,
 		mld_dev_queue_xmit);
 	if (!err) {
@@ -1505,7 +1507,7 @@ static struct sk_buff *add_grhead(struct sk_buff *skb, struct ifmcaddr6 *pmc,
 	pgr->grec_auxwords = 0;
 	pgr->grec_nsrcs = 0;
 	pgr->grec_mca = pmc->mca_addr;	/* structure copy */
-	pmr = (struct mld2_report *)skb->h.raw;
+	pmr = (struct mld2_report *)skb_transport_header(skb);
 	pmr->ngrec = htons(ntohs(pmr->ngrec)+1);
 	*ppgr = pgr;
 	return skb;
@@ -1538,7 +1540,7 @@ static struct sk_buff *add_grec(struct sk_buff *skb, struct ifmcaddr6 *pmc,
 	if (!*psf_list)
 		goto empty_source;
 
-	pmr = skb ? (struct mld2_report *)skb->h.raw : NULL;
+	pmr = skb ? (struct mld2_report *)skb_transport_header(skb) : NULL;
 
 	/* EX and TO_EX get a fresh packet, if needed */
 	if (truncate) {

net/ipv6/mip6.c

@@ -92,10 +92,10 @@ int mip6_mh_filter(struct sock *sk, struct sk_buff *skb)
 
 	if (!pskb_may_pull(skb, (skb_transport_offset(skb)) + 8) ||
 	    !pskb_may_pull(skb, (skb_transport_offset(skb) +
-				 ((skb->h.raw[1] + 1) << 3))))
+				 ((skb_transport_header(skb)[1] + 1) << 3))))
 		return -1;
 
-	mh = (struct ip6_mh *)skb->h.raw;
+	mh = (struct ip6_mh *)skb_transport_header(skb);
 
 	if (mh->ip6mh_hdrlen < mip6_mh_len(mh->ip6mh_type)) {
 		LIMIT_NETDEBUG(KERN_DEBUG "mip6: MH message too short: %d vs >=%d\n",
@@ -158,7 +158,7 @@ static int mip6_destopt_output(struct xfrm_state *x, struct sk_buff *skb)
 	nexthdr = *skb_network_header(skb);
 	*skb_network_header(skb) = IPPROTO_DSTOPTS;
 
-	dstopt = (struct ipv6_destopt_hdr *)skb->h.raw;
+	dstopt = (struct ipv6_destopt_hdr *)skb_transport_header(skb);
 	dstopt->nexthdr = nexthdr;
 
 	hao = mip6_padn((char *)(dstopt + 1),
@@ -370,7 +370,7 @@ static int mip6_rthdr_output(struct xfrm_state *x, struct sk_buff *skb)
 	nexthdr = *skb_network_header(skb);
 	*skb_network_header(skb) = IPPROTO_ROUTING;
 
-	rt2 = (struct rt2_hdr *)skb->h.raw;
+	rt2 = (struct rt2_hdr *)skb_transport_header(skb);
 	rt2->rt_hdr.nexthdr = nexthdr;
 	rt2->rt_hdr.hdrlen = (x->props.header_len >> 3) - 1;
 	rt2->rt_hdr.type = IPV6_SRCRT_TYPE_2;

net/ipv6/ndisc.c

@@ -760,7 +760,7 @@ static void ndisc_solicit(struct neighbour *neigh, struct sk_buff *skb)
 
 static void ndisc_recv_ns(struct sk_buff *skb)
 {
-	struct nd_msg *msg = (struct nd_msg *)skb->h.raw;
+	struct nd_msg *msg = (struct nd_msg *)skb_transport_header(skb);
 	struct in6_addr *saddr = &ipv6_hdr(skb)->saddr;
 	struct in6_addr *daddr = &ipv6_hdr(skb)->daddr;
 	u8 *lladdr = NULL;
@@ -938,7 +938,7 @@ static void ndisc_recv_ns(struct sk_buff *skb)
 
 static void ndisc_recv_na(struct sk_buff *skb)
 {
-	struct nd_msg *msg = (struct nd_msg *)skb->h.raw;
+	struct nd_msg *msg = (struct nd_msg *)skb_transport_header(skb);
 	struct in6_addr *saddr = &ipv6_hdr(skb)->saddr;
 	struct in6_addr *daddr = &ipv6_hdr(skb)->daddr;
 	u8 *lladdr = NULL;
@@ -1040,7 +1040,7 @@ static void ndisc_recv_na(struct sk_buff *skb)
 
 static void ndisc_recv_rs(struct sk_buff *skb)
 {
-	struct rs_msg *rs_msg = (struct rs_msg *) skb->h.raw;
+	struct rs_msg *rs_msg = (struct rs_msg *)skb_transport_header(skb);
 	unsigned long ndoptlen = skb->len - sizeof(*rs_msg);
 	struct neighbour *neigh;
 	struct inet6_dev *idev;
@@ -1097,7 +1097,7 @@ static void ndisc_recv_rs(struct sk_buff *skb)
 
 static void ndisc_router_discovery(struct sk_buff *skb)
 {
-	struct ra_msg *ra_msg = (struct ra_msg *) skb->h.raw;
+	struct ra_msg *ra_msg = (struct ra_msg *)skb_transport_header(skb);
 	struct neighbour *neigh = NULL;
 	struct inet6_dev *in6_dev;
 	struct rt6_info *rt = NULL;
@@ -1108,7 +1108,8 @@ static void ndisc_router_discovery(struct sk_buff *skb)
 
 	__u8 * opt = (__u8 *)(ra_msg + 1);
 
-	optlen = (skb->tail - skb->h.raw) - sizeof(struct ra_msg);
+	optlen = (skb->tail - skb_transport_header(skb)) -
+		  sizeof(struct ra_msg);
 
 	if (!(ipv6_addr_type(&ipv6_hdr(skb)->saddr) & IPV6_ADDR_LINKLOCAL)) {
 		ND_PRINTK2(KERN_WARNING
@@ -1357,7 +1358,7 @@ static void ndisc_redirect_rcv(struct sk_buff *skb)
 		return;
 	}
 
-	optlen = skb->tail - skb->h.raw;
+	optlen = skb->tail - skb_transport_header(skb);
 	optlen -= sizeof(struct icmp6hdr) + 2 * sizeof(struct in6_addr);
 
 	if (optlen < 0) {
@@ -1584,9 +1585,9 @@ int ndisc_rcv(struct sk_buff *skb)
 	if (!pskb_may_pull(skb, skb->len))
 		return 0;
 
-	msg = (struct nd_msg *) skb->h.raw;
+	msg = (struct nd_msg *)skb_transport_header(skb);
 
-	__skb_push(skb, skb->data-skb->h.raw);
+	__skb_push(skb, skb->data - skb_transport_header(skb));
 
 	if (ipv6_hdr(skb)->hop_limit != 255) {
 		ND_PRINTK2(KERN_WARNING

net/ipv6/raw.c

@@ -1077,7 +1077,7 @@ static int rawv6_ioctl(struct sock *sk, int cmd, unsigned long arg)
 			spin_lock_bh(&sk->sk_receive_queue.lock);
 			skb = skb_peek(&sk->sk_receive_queue);
 			if (skb != NULL)
-				amount = skb->tail - skb->h.raw;
+				amount = skb->tail - skb_transport_header(skb);
 			spin_unlock_bh(&sk->sk_receive_queue.lock);
 			return put_user(amount, (int __user *)arg);
 		}

net/ipv6/reassembly.c

@@ -726,7 +726,7 @@ static int ipv6_frag_rcv(struct sk_buff **skbp)
 	}
 
 	hdr = ipv6_hdr(skb);
-	fhdr = (struct frag_hdr *)skb->h.raw;
+	fhdr = (struct frag_hdr *)skb_transport_header(skb);
 
 	if (!(fhdr->frag_off & htons(0xFFF9))) {
 		/* It is not a fragmented frame */

net/ipv6/xfrm6_mode_transport.c

@@ -51,10 +51,11 @@ static int xfrm6_transport_output(struct xfrm_state *x, struct sk_buff *skb)
  */
 static int xfrm6_transport_input(struct xfrm_state *x, struct sk_buff *skb)
 {
-	int ihl = skb->data - skb->h.raw;
+	int ihl = skb->data - skb_transport_header(skb);
 
 	if (skb->h.raw != skb->nh.raw) {
-		memmove(skb->h.raw, skb_network_header(skb), ihl);
+		memmove(skb_transport_header(skb),
+			skb_network_header(skb), ihl);
 		skb->nh.raw = skb->h.raw;
 	}
 	ipv6_hdr(skb)->payload_len = htons(skb->len + ihl -

net/xfrm/xfrm_input.c

@@ -62,7 +62,7 @@ int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq)
 	case IPPROTO_COMP:
 		if (!pskb_may_pull(skb, sizeof(struct ip_comp_hdr)))
 			return -EINVAL;
-		*spi = htonl(ntohs(*(__be16*)(skb->h.raw + 2)));
+		*spi = htonl(ntohs(*(__be16*)(skb_transport_header(skb) + 2)));
 		*seq = 0;
 		return 0;
 	default:
@@ -72,8 +72,8 @@ int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq)
 	if (!pskb_may_pull(skb, 16))
 		return -EINVAL;
 
-	*spi = *(__be32*)(skb->h.raw + offset);
-	*seq = *(__be32*)(skb->h.raw + offset_seq);
+	*spi = *(__be32*)(skb_transport_header(skb) + offset);
+	*seq = *(__be32*)(skb_transport_header(skb) + offset_seq);
 	return 0;
 }
 EXPORT_SYMBOL(xfrm_parse_spi);