[SK_BUFF]: Use the helpers to get the layer header pointer

Some more cases...
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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 iplen = skb->tail - skb_network_header(skb);
 	const int igmplen = skb->tail - skb_transport_header(skb);
 
 	pip->tot_len = htons(iplen);

net/ipv4/ip_output.c

@@ -601,7 +601,7 @@ int ip_fragment(struct sk_buff *skb, int (*output)(struct sk_buff*))
 		/*
 		 *	Copy a block of the IP datagram.
 		 */
-		if (skb_copy_bits(skb, ptr, skb2->h.raw, len))
+		if (skb_copy_bits(skb, ptr, skb_transport_header(skb2), len))
 			BUG();
 		left -= len;
 

net/ipv6/exthdrs.c

@@ -506,7 +506,7 @@ static int ipv6_rthdr_rcv(struct sk_buff **skbp)
 		kfree_skb(skb);
 		*skbp = skb = skb2;
 		opt = IP6CB(skb2);
-		hdr = (struct ipv6_rt_hdr *) skb2->h.raw;
+		hdr = (struct ipv6_rt_hdr *)skb_transport_header(skb2);
 	}
 
 	if (skb->ip_summed == CHECKSUM_COMPLETE)

net/ipv6/netfilter/nf_conntrack_reasm.c

@@ -627,7 +627,7 @@ nf_ct_frag6_reasm(struct nf_ct_frag6_queue *fq, struct net_device *dev)
 
 	/* We have to remove fragment header from datagram and to relocate
 	 * header in order to calculate ICV correctly. */
-	skb_network_header(head)[fq->nhoffset] = head->h.raw[0];
+	skb_network_header(head)[fq->nhoffset] = skb_transport_header(head)[0];
 	memmove(head->head + sizeof(struct frag_hdr), head->head,
 		(head->data - head->head) - sizeof(struct frag_hdr));
 	head->mac.raw += sizeof(struct frag_hdr);
@@ -787,7 +787,7 @@ struct sk_buff *nf_ct_frag6_gather(struct sk_buff *skb)
 
 	skb_set_transport_header(clone, fhoff);
 	hdr = ipv6_hdr(clone);
-	fhdr = (struct frag_hdr *)clone->h.raw;
+	fhdr = (struct frag_hdr *)skb_transport_header(clone);
 
 	if (!(fhdr->frag_off & htons(0xFFF9))) {
 		DEBUGP("Invalid fragment offset\n");