[SK_BUFF]: Introduce ip_hdr(), remove skb->nh.iph

[safe/jmp/linux-2.6] / net / ipv4 / ip_output.c

diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 15de9d4..1abc488 100644 (file)
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -127,7 +127,7 @@ int ip_build_and_send_pkt(struct sk_buff *skb, struct sock *sk,
        /* Build the IP header. */
        skb_push(skb, sizeof(struct iphdr) + (opt ? opt->optlen : 0));
        skb_reset_network_header(skb);
-       iph = skb->nh.iph;
+       iph = ip_hdr(skb);
        iph->version  = 4;
        iph->ihl      = 5;
        iph->tos      = inet->tos;
@@ -245,7 +245,7 @@ int ip_mc_output(struct sk_buff *skb)
 
                /* Multicasts with ttl 0 must not go beyond the host */
 
-               if (skb->nh.iph->ttl == 0) {
+               if (ip_hdr(skb)->ttl == 0) {
                        kfree_skb(skb);
                        return 0;
                }
@@ -332,7 +332,7 @@ packet_routed:
        /* OK, we know where to send it, allocate and build IP header. */
        skb_push(skb, sizeof(struct iphdr) + (opt ? opt->optlen : 0));
        skb_reset_network_header(skb);
-       iph = skb->nh.iph;
+       iph = ip_hdr(skb);
        *((__be16 *)iph) = htons((4 << 12) | (5 << 8) | (inet->tos & 0xff));
        iph->tot_len = htons(skb->len);
        if (ip_dont_fragment(sk, &rt->u.dst) && !ipfragok)
@@ -428,7 +428,7 @@ int ip_fragment(struct sk_buff *skb, int (*output)(struct sk_buff*))
         *      Point into the IP datagram header.
         */
 
-       iph = skb->nh.iph;
+       iph = ip_hdr(skb);
 
        if (unlikely((iph->frag_off & htons(IP_DF)) && !skb->local_df)) {
                IP_INC_STATS(IPSTATS_MIB_FRAGFAILS);
@@ -504,7 +504,7 @@ int ip_fragment(struct sk_buff *skb, int (*output)(struct sk_buff*))
                                __skb_push(frag, hlen);
                                skb_reset_network_header(frag);
                                memcpy(skb_network_header(frag), iph, hlen);
-                               iph = frag->nh.iph;
+                               iph = ip_hdr(frag);
                                iph->tot_len = htons(frag->len);
                                ip_copy_metadata(frag, skb);
                                if (offset == 0)
@@ -619,7 +619,7 @@ slow_path:
                /*
                 *      Fill in the new header fields.
                 */
-               iph = skb2->nh.iph;
+               iph = ip_hdr(skb2);
                iph->frag_off = htons((offset >> 3));
 
                /* ANK: dirty, but effective trick. Upgrade options only if
@@ -1125,7 +1125,7 @@ ssize_t   ip_append_page(struct sock *sk, struct page *page,
                         */
                        data = skb_put(skb, fragheaderlen + fraggap);
                        skb_reset_network_header(skb);
-                       iph = skb->nh.iph;
+                       iph = ip_hdr(skb);
                        data += fragheaderlen;
                        skb->h.raw = data;
 
@@ -1352,7 +1352,7 @@ void ip_send_reply(struct sock *sk, struct sk_buff *skb, struct ip_reply_arg *ar
                struct flowi fl = { .nl_u = { .ip4_u =
                                              { .daddr = daddr,
                                                .saddr = rt->rt_spec_dst,
-                                               .tos = RT_TOS(skb->nh.iph->tos) } },
+                                               .tos = RT_TOS(ip_hdr(skb)->tos) } },
                                    /* Not quite clean, but right. */
                                    .uli_u = { .ports =
                                               { .sport = skb->h.th->dest,
@@ -1370,9 +1370,9 @@ void ip_send_reply(struct sock *sk, struct sk_buff *skb, struct ip_reply_arg *ar
           with locally disabled BH and that sk cannot be already spinlocked.
         */
        bh_lock_sock(sk);
-       inet->tos = skb->nh.iph->tos;
+       inet->tos = ip_hdr(skb)->tos;
        sk->sk_priority = skb->priority;
-       sk->sk_protocol = skb->nh.iph->protocol;
+       sk->sk_protocol = ip_hdr(skb)->protocol;
        ip_append_data(sk, ip_reply_glue_bits, arg->iov->iov_base, len, 0,
                       &ipc, rt, MSG_DONTWAIT);
        if ((skb = skb_peek(&sk->sk_write_queue)) != NULL) {