1 files changed, 66 insertions, 52 deletions

diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index fb39604c3d09..6d8e4ac7bdad 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -50,13 +50,14 @@
 
 int ipv6_find_tlv(struct sk_buff *skb, int offset, int type)
 {
-        int packet_len = skb->tail - skb->nh.raw;
+        const unsigned char *nh = skb_network_header(skb);
+        int packet_len = skb->tail - skb->network_header;
         struct ipv6_opt_hdr *hdr;
         int len;
 
         if (offset + 2 > packet_len)
                 goto bad;
-        hdr = (struct ipv6_opt_hdr*)(skb->nh.raw + offset);
+        hdr = (struct ipv6_opt_hdr *)(nh + offset);
         len = ((hdr->hdrlen + 1) << 3);
 
         if (offset + len > packet_len)
@@ -66,7 +67,7 @@ int ipv6_find_tlv(struct sk_buff *skb, int offset, int type)
         len -= 2;
 
         while (len > 0) {
-                int opttype = skb->nh.raw[offset];
+                int opttype = nh[offset];
                 int optlen;
 
                 if (opttype == type)
@@ -77,7 +78,7 @@ int ipv6_find_tlv(struct sk_buff *skb, int offset, int type)
                         optlen = 1;
                         break;
                 default:
-                        optlen = skb->nh.raw[offset + 1] + 2;
+                        optlen = nh[offset + 1] + 2;
                         if (optlen > len)
                                 goto bad;
                         break;
@@ -113,7 +114,7 @@ static int ip6_tlvopt_unknown(struct sk_buff **skbp, int optoff)
 {
         struct sk_buff *skb = *skbp;
 
-        switch ((skb->nh.raw[optoff] & 0xC0) >> 6) {
+        switch ((skb_network_header(skb)[optoff] & 0xC0) >> 6) {
         case 0: /* ignore */
                 return 1;
 
@@ -124,12 +125,12 @@ static int ip6_tlvopt_unknown(struct sk_buff **skbp, int optoff)
                 /* Actually, it is redundant check. icmp_send
                    will recheck in any case.
                  */
-                if (ipv6_addr_is_multicast(&skb->nh.ipv6h->daddr))
+                if (ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr))
                         break;
         case 2: /* send ICMP PARM PROB regardless and drop packet */
                 icmpv6_param_prob(skb, ICMPV6_UNK_OPTION, optoff);
                 return 0;
-        };
+        }
 
         kfree_skb(skb);
         return 0;
@@ -141,19 +142,20 @@ static int ip6_parse_tlv(struct tlvtype_proc *procs, struct sk_buff **skbp)
 {
         struct sk_buff *skb = *skbp;
         struct tlvtype_proc *curr;
-        int off = skb->h.raw - skb->nh.raw;
-        int len = ((skb->h.raw[1]+1)<<3);
+        const unsigned char *nh = skb_network_header(skb);
+        int off = skb_network_header_len(skb);
+        int len = (skb_transport_header(skb)[1] + 1) << 3;
 
-        if ((skb->h.raw + len) - skb->data > skb_headlen(skb))
+        if (skb_transport_offset(skb) + len > skb_headlen(skb))
                 goto bad;
 
         off += 2;
         len -= 2;
 
         while (len > 0) {
-                int optlen = skb->nh.raw[off+1]+2;
+                int optlen = nh[off + 1] + 2;
 
-                switch (skb->nh.raw[off]) {
+                switch (nh[off]) {
                 case IPV6_TLV_PAD0:
                         optlen = 1;
                         break;
@@ -165,7 +167,7 @@ static int ip6_parse_tlv(struct tlvtype_proc *procs, struct sk_buff **skbp)
                         if (optlen > len)
                                 goto bad;
                         for (curr=procs; curr->type >= 0; curr++) {
-                                if (curr->type == skb->nh.raw[off]) {
+                                if (curr->type == nh[off]) {
                                         /* type specific length/alignment
                                            checks will be performed in the
                                            func(). */
@@ -200,7 +202,7 @@ static int ipv6_dest_hao(struct sk_buff **skbp, int optoff)
         struct sk_buff *skb = *skbp;
         struct ipv6_destopt_hao *hao;
         struct inet6_skb_parm *opt = IP6CB(skb);
-        struct ipv6hdr *ipv6h = (struct ipv6hdr *)skb->nh.raw;
+        struct ipv6hdr *ipv6h = ipv6_hdr(skb);
         struct in6_addr tmp_addr;
         int ret;
 
@@ -211,7 +213,7 @@ static int ipv6_dest_hao(struct sk_buff **skbp, int optoff)
         opt->dsthao = opt->dst1;
         opt->dst1 = 0;
 
-        hao = (struct ipv6_destopt_hao *)(skb->nh.raw + optoff);
+        hao = (struct ipv6_destopt_hao *)(skb_network_header(skb) + optoff);
 
         if (hao->length != 16) {
                 LIMIT_NETDEBUG(
@@ -244,8 +246,9 @@ static int ipv6_dest_hao(struct sk_buff **skbp, int optoff)
 
                 /* update all variable using below by copied skbuff */
                 *skbp = skb = skb2;
-                hao = (struct ipv6_destopt_hao *)(skb2->nh.raw + optoff);
-                ipv6h = (struct ipv6hdr *)skb2->nh.raw;
+                hao = (struct ipv6_destopt_hao *)(skb_network_header(skb2) +
+                                                  optoff);
+                ipv6h = ipv6_hdr(skb2);
         }
 
         if (skb->ip_summed == CHECKSUM_COMPLETE)
@@ -255,7 +258,7 @@ static int ipv6_dest_hao(struct sk_buff **skbp, int optoff)
         ipv6_addr_copy(&ipv6h->saddr, &hao->addr);
         ipv6_addr_copy(&hao->addr, &tmp_addr);
 
-        if (skb->tstamp.off_sec == 0)
+        if (skb->tstamp.tv64 == 0)
                 __net_timestamp(skb);
 
         return 1;
@@ -285,16 +288,16 @@ static int ipv6_destopt_rcv(struct sk_buff **skbp)
 #endif
         struct dst_entry *dst;
 
-        if (!pskb_may_pull(skb, (skb->h.raw-skb->data)+8) ||
-            !pskb_may_pull(skb, (skb->h.raw-skb->data)+((skb->h.raw[1]+1)<<3))) {
+        if (!pskb_may_pull(skb, skb_transport_offset(skb) + 8) ||
+            !pskb_may_pull(skb, (skb_transport_offset(skb) +
+                                 ((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_network_header_len(skb);
 #ifdef CONFIG_IPV6_MIP6
         dstbuf = opt->dst1;
 #endif
@@ -303,7 +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->transport_header += (skb_transport_header(skb)[1] + 1) << 3;
                 opt = IP6CB(skb);
 #ifdef CONFIG_IPV6_MIP6
                 opt->nhoff = dstbuf;
@@ -384,18 +387,20 @@ static int ipv6_rthdr_rcv(struct sk_buff **skbp)
 
         in6_dev_put(idev);
 
-        if (!pskb_may_pull(skb, (skb->h.raw-skb->data)+8) ||
-            !pskb_may_pull(skb, (skb->h.raw-skb->data)+((skb->h.raw[1]+1)<<3))) {
+        if (!pskb_may_pull(skb, skb_transport_offset(skb) + 8) ||
+            !pskb_may_pull(skb, (skb_transport_offset(skb) +
+                                 ((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
+        case IPV6_SRCRT_TYPE_2:
                 break;
 #endif
         case IPV6_SRCRT_TYPE_0:
@@ -406,11 +411,12 @@ static int ipv6_rthdr_rcv(struct sk_buff **skbp)
         default:
                 IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
                                  IPSTATS_MIB_INHDRERRORS);
-                icmpv6_param_prob(skb, ICMPV6_HDR_FIELD, (&hdr->type) - skb->nh.raw);
+                icmpv6_param_prob(skb, ICMPV6_HDR_FIELD,
+                                  (&hdr->type) - skb_network_header(skb));
                 return -1;
         }
 
-        if (ipv6_addr_is_multicast(&skb->nh.ipv6h->daddr) ||
+        if (ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ||
             skb->pkt_type != PACKET_HOST) {
                 IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
                                  IPSTATS_MIB_INADDRERRORS);
@@ -438,12 +444,11 @@ looped_back:
                         break;
                 }
 
-                opt->lastopt = skb->h.raw - skb->nh.raw;
-                opt->srcrt = skb->h.raw - skb->nh.raw;
-                skb->h.raw += (hdr->hdrlen + 1) << 3;
+                opt->lastopt = opt->srcrt = skb_network_header_len(skb);
+                skb->transport_header += (hdr->hdrlen + 1) << 3;
                 opt->dst0 = opt->dst1;
                 opt->dst1 = 0;
-                opt->nhoff = (&hdr->nexthdr) - skb->nh.raw;
+                opt->nhoff = (&hdr->nexthdr) - skb_network_header(skb);
                 return 1;
         }
 
@@ -452,7 +457,9 @@ looped_back:
                 if (hdr->hdrlen & 0x01) {
                         IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
                                          IPSTATS_MIB_INHDRERRORS);
-                        icmpv6_param_prob(skb, ICMPV6_HDR_FIELD, (&hdr->hdrlen) - skb->nh.raw);
+                        icmpv6_param_prob(skb, ICMPV6_HDR_FIELD,
+                                          ((&hdr->hdrlen) -
+                                           skb_network_header(skb)));
                         return -1;
                 }
                 break;
@@ -479,7 +486,9 @@ looped_back:
         if (hdr->segments_left > n) {
                 IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
                                  IPSTATS_MIB_INHDRERRORS);
-                icmpv6_param_prob(skb, ICMPV6_HDR_FIELD, (&hdr->segments_left) - skb->nh.raw);
+                icmpv6_param_prob(skb, ICMPV6_HDR_FIELD,
+                                  ((&hdr->segments_left) -
+                                   skb_network_header(skb)));
                 return -1;
         }
 
@@ -498,7 +507,7 @@ looped_back:
                 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)
@@ -514,7 +523,7 @@ looped_back:
 #ifdef CONFIG_IPV6_MIP6
         case IPV6_SRCRT_TYPE_2:
                 if (xfrm6_input_addr(skb, (xfrm_address_t *)addr,
-                                     (xfrm_address_t *)&skb->nh.ipv6h->saddr,
+                                     (xfrm_address_t *)&ipv6_hdr(skb)->saddr,
                                      IPPROTO_ROUTING) < 0) {
                         IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
                                          IPSTATS_MIB_INADDRERRORS);
@@ -541,19 +550,19 @@ looped_back:
         }
 
         ipv6_addr_copy(&daddr, addr);
-        ipv6_addr_copy(addr, &skb->nh.ipv6h->daddr);
-        ipv6_addr_copy(&skb->nh.ipv6h->daddr, &daddr);
+        ipv6_addr_copy(addr, &ipv6_hdr(skb)->daddr);
+        ipv6_addr_copy(&ipv6_hdr(skb)->daddr, &daddr);
 
         dst_release(xchg(&skb->dst, NULL));
         ip6_route_input(skb);
         if (skb->dst->error) {
-                skb_push(skb, skb->data - skb->nh.raw);
+                skb_push(skb, skb->data - skb_network_header(skb));
                 dst_input(skb);
                 return -1;
         }
 
         if (skb->dst->dev->flags&IFF_LOOPBACK) {
-                if (skb->nh.ipv6h->hop_limit <= 1) {
+                if (ipv6_hdr(skb)->hop_limit <= 1) {
                         IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
                                          IPSTATS_MIB_INHDRERRORS);
                         icmpv6_send(skb, ICMPV6_TIME_EXCEED, ICMPV6_EXC_HOPLIMIT,
@@ -561,11 +570,11 @@ looped_back:
                         kfree_skb(skb);
                         return -1;
                 }
-                skb->nh.ipv6h->hop_limit--;
+                ipv6_hdr(skb)->hop_limit--;
                 goto looped_back;
         }
 
-        skb_push(skb, skb->data - skb->nh.raw);
+        skb_push(skb, skb->data - skb_network_header(skb));
         dst_input(skb);
         return -1;
 }
@@ -656,13 +665,14 @@ EXPORT_SYMBOL_GPL(ipv6_invert_rthdr);
 static int ipv6_hop_ra(struct sk_buff **skbp, int optoff)
 {
         struct sk_buff *skb = *skbp;
+        const unsigned char *nh = skb_network_header(skb);
 
-        if (skb->nh.raw[optoff+1] == 2) {
+        if (nh[optoff + 1] == 2) {
                 IP6CB(skb)->ra = optoff;
                 return 1;
         }
         LIMIT_NETDEBUG(KERN_DEBUG "ipv6_hop_ra: wrong RA length %d\n",
-                       skb->nh.raw[optoff+1]);
+                       nh[optoff + 1]);
         kfree_skb(skb);
         return 0;
 }
@@ -672,23 +682,24 @@ static int ipv6_hop_ra(struct sk_buff **skbp, int optoff)
 static int ipv6_hop_jumbo(struct sk_buff **skbp, int optoff)
 {
         struct sk_buff *skb = *skbp;
+        const unsigned char *nh = skb_network_header(skb);
         u32 pkt_len;
 
-        if (skb->nh.raw[optoff+1] != 4 || (optoff&3) != 2) {
+        if (nh[optoff + 1] != 4 || (optoff & 3) != 2) {
                 LIMIT_NETDEBUG(KERN_DEBUG "ipv6_hop_jumbo: wrong jumbo opt length/alignment %d\n",
-                               skb->nh.raw[optoff+1]);
+                               nh[optoff+1]);
                 IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
                                  IPSTATS_MIB_INHDRERRORS);
                 goto drop;
         }
 
-        pkt_len = ntohl(*(__be32*)(skb->nh.raw+optoff+2));
+        pkt_len = ntohl(*(__be32 *)(nh + optoff + 2));
         if (pkt_len <= IPV6_MAXPLEN) {
                 IP6_INC_STATS_BH(ip6_dst_idev(skb->dst), IPSTATS_MIB_INHDRERRORS);
                 icmpv6_param_prob(skb, ICMPV6_HDR_FIELD, optoff+2);
                 return 0;
         }
-        if (skb->nh.ipv6h->payload_len) {
+        if (ipv6_hdr(skb)->payload_len) {
                 IP6_INC_STATS_BH(ip6_dst_idev(skb->dst), IPSTATS_MIB_INHDRERRORS);
                 icmpv6_param_prob(skb, ICMPV6_HDR_FIELD, optoff);
                 return 0;
@@ -727,13 +738,14 @@ int ipv6_parse_hopopts(struct sk_buff **skbp)
         struct inet6_skb_parm *opt = IP6CB(skb);
 
         /*
-         * skb->nh.raw is equal to skb->data, and
-         * skb->h.raw - skb->nh.raw is always equal to
+         * skb_network_header(skb) is equal to skb->data, and
+         * skb_network_header_len(skb) is always equal to
          * sizeof(struct ipv6hdr) by definition of
          * 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;
         }
@@ -741,7 +753,7 @@ 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->transport_header += (skb_transport_header(skb)[1] + 1) << 3;
                 opt = IP6CB(skb);
                 opt->nhoff = sizeof(struct ipv6hdr);
                 return 1;
@@ -810,6 +822,8 @@ void ipv6_push_nfrag_opts(struct sk_buff *skb, struct ipv6_txoptions *opt,
                 ipv6_push_exthdr(skb, proto, NEXTHDR_HOP, opt->hopopt);
 }
 
+EXPORT_SYMBOL(ipv6_push_nfrag_opts);
+
 void ipv6_push_frag_opts(struct sk_buff *skb, struct ipv6_txoptions *opt, u8 *proto)
 {
         if (opt->dst1opt)