[SK_BUFF]: More skb_put related skb_reset_transport_header

This time we have to set it to skb->tail that is not anymore equal to
skb->data, so we either add a new helper or just add the skb->tail - skb->data
offset, for now do the later.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv4/igmp.c

@@ -333,7 +333,8 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size)
 	((u8*)&pip[1])[2] = 0;
 	((u8*)&pip[1])[3] = 0;
 
-	skb->h.raw = skb_put(skb, sizeof(*pig));
+	skb->h.raw = skb->nh.raw + sizeof(struct iphdr) + 4;
+	skb_put(skb, sizeof(*pig));
 	pig = igmpv3_report_hdr(skb);
 	pig->type = IGMPV3_HOST_MEMBERSHIP_REPORT;
 	pig->resv1 = 0;

net/ipv4/ipvs/ip_vs_xmit.c

@@ -323,6 +323,7 @@ ip_vs_tunnel_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
 	struct iphdr  *old_iph = ip_hdr(skb);
 	u8     tos = old_iph->tos;
 	__be16 df = old_iph->frag_off;
+	unsigned char *old_h = skb_transport_header(skb);
 	struct iphdr  *iph;			/* Our new IP header */
 	int    max_headroom;			/* The extra header space needed */
 	int    mtu;
@@ -380,7 +381,7 @@ ip_vs_tunnel_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
 		old_iph = ip_hdr(skb);
 	}
 
-	skb->h.raw = (void *) old_iph;
+	skb->h.raw = old_h;
 
 	/* fix old IP header checksum */
 	ip_send_check(old_iph);

net/ipv6/mcast.c

@@ -1423,8 +1423,9 @@ static struct sk_buff *mld_newpack(struct net_device *dev, int size)
 
 	memcpy(skb_put(skb, sizeof(ra)), ra, sizeof(ra));
 
-	pmr =(struct mld2_report *)skb_put(skb, sizeof(*pmr));
-	skb->h.raw = (unsigned char *)pmr;
+	skb_set_transport_header(skb, skb->tail - skb->data);
+	skb_put(skb, sizeof(*pmr));
+	pmr = (struct mld2_report *)skb_transport_header(skb);
 	pmr->type = ICMPV6_MLD2_REPORT;
 	pmr->resv1 = 0;
 	pmr->csum = 0;

net/ipv6/ndisc.c

@@ -492,8 +492,9 @@ static void ndisc_send_na(struct net_device *dev, struct neighbour *neigh,
 	skb_reserve(skb, LL_RESERVED_SPACE(dev));
 	ip6_nd_hdr(sk, skb, dev, src_addr, daddr, IPPROTO_ICMPV6, len);
 
-	msg = (struct nd_msg *)skb_put(skb, len);
-	skb->h.raw = (unsigned char*)msg;
+	skb_set_transport_header(skb, skb->tail - skb->data);
+	skb_put(skb, len);
+	msg = (struct nd_msg *)skb_transport_header(skb);
 
 	msg->icmph.icmp6_type = NDISC_NEIGHBOUR_ADVERTISEMENT;
 	msg->icmph.icmp6_code = 0;
@@ -583,8 +584,9 @@ void ndisc_send_ns(struct net_device *dev, struct neighbour *neigh,
 	skb_reserve(skb, LL_RESERVED_SPACE(dev));
 	ip6_nd_hdr(sk, skb, dev, saddr, daddr, IPPROTO_ICMPV6, len);
 
-	msg = (struct nd_msg *)skb_put(skb, len);
-	skb->h.raw = (unsigned char*)msg;
+	skb_set_transport_header(skb, skb->tail - skb->data);
+	skb_put(skb, len);
+	msg = (struct nd_msg *)skb_transport_header(skb);
 	msg->icmph.icmp6_type = NDISC_NEIGHBOUR_SOLICITATION;
 	msg->icmph.icmp6_code = 0;
 	msg->icmph.icmp6_cksum = 0;
@@ -683,8 +685,9 @@ void ndisc_send_rs(struct net_device *dev, struct in6_addr *saddr,
 	skb_reserve(skb, LL_RESERVED_SPACE(dev));
 	ip6_nd_hdr(sk, skb, dev, saddr, daddr, IPPROTO_ICMPV6, len);
 
-	hdr = (struct icmp6hdr *)skb_put(skb, len);
-	skb->h.raw = (unsigned char*)hdr;
+	skb_set_transport_header(skb, skb->tail - skb->data);
+	skb_put(skb, len);
+	hdr = icmp6_hdr(skb);
 	hdr->icmp6_type = NDISC_ROUTER_SOLICITATION;
 	hdr->icmp6_code = 0;
 	hdr->icmp6_cksum = 0;
@@ -1519,8 +1522,9 @@ void ndisc_send_redirect(struct sk_buff *skb, struct neighbour *neigh,
 	ip6_nd_hdr(sk, buff, dev, &saddr_buf, &ipv6_hdr(skb)->saddr,
 		   IPPROTO_ICMPV6, len);
 
-	icmph = (struct icmp6hdr *)skb_put(buff, len);
-	buff->h.raw = (unsigned char*)icmph;
+	skb_set_transport_header(buff, buff->tail - buff->data);
+	skb_put(buff, len);
+	icmph = icmp6_hdr(buff);
 
 	memset(icmph, 0, sizeof(struct icmp6hdr));
 	icmph->icmp6_type = NDISC_REDIRECT;