ip_output.c (4af358f81881e1d083a916c9269b5ac0936e180d) ip_output.c (f6b72b6217f8c24f2a54988e58af858b4e66024d)
1/*
2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
5 *
6 * The Internet Protocol (IP) output module.
7 *
8 * Authors: Ross Biro

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177EXPORT_SYMBOL_GPL(ip_build_and_send_pkt);
178
179static inline int ip_finish_output2(struct sk_buff *skb)
180{
181 struct dst_entry *dst = skb_dst(skb);
182 struct rtable *rt = (struct rtable *)dst;
183 struct net_device *dev = dst->dev;
184 unsigned int hh_len = LL_RESERVED_SPACE(dev);
1/*
2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
5 *
6 * The Internet Protocol (IP) output module.
7 *
8 * Authors: Ross Biro

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177EXPORT_SYMBOL_GPL(ip_build_and_send_pkt);
178
179static inline int ip_finish_output2(struct sk_buff *skb)
180{
181 struct dst_entry *dst = skb_dst(skb);
182 struct rtable *rt = (struct rtable *)dst;
183 struct net_device *dev = dst->dev;
184 unsigned int hh_len = LL_RESERVED_SPACE(dev);
185 struct neighbour *neigh;
185
186 if (rt->rt_type == RTN_MULTICAST) {
187 IP_UPD_PO_STATS(dev_net(dev), IPSTATS_MIB_OUTMCAST, skb->len);
188 } else if (rt->rt_type == RTN_BROADCAST)
189 IP_UPD_PO_STATS(dev_net(dev), IPSTATS_MIB_OUTBCAST, skb->len);
190
191 /* Be paranoid, rather than too clever. */
192 if (unlikely(skb_headroom(skb) < hh_len && dev->header_ops)) {

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198 return -ENOMEM;
199 }
200 if (skb->sk)
201 skb_set_owner_w(skb2, skb->sk);
202 kfree_skb(skb);
203 skb = skb2;
204 }
205
186
187 if (rt->rt_type == RTN_MULTICAST) {
188 IP_UPD_PO_STATS(dev_net(dev), IPSTATS_MIB_OUTMCAST, skb->len);
189 } else if (rt->rt_type == RTN_BROADCAST)
190 IP_UPD_PO_STATS(dev_net(dev), IPSTATS_MIB_OUTBCAST, skb->len);
191
192 /* Be paranoid, rather than too clever. */
193 if (unlikely(skb_headroom(skb) < hh_len && dev->header_ops)) {

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199 return -ENOMEM;
200 }
201 if (skb->sk)
202 skb_set_owner_w(skb2, skb->sk);
203 kfree_skb(skb);
204 skb = skb2;
205 }
206
206 if (dst->hh)
207 return neigh_hh_output(dst->hh, skb);
208 else if (dst->neighbour)
209 return dst->neighbour->output(skb);
210
207 neigh = dst->neighbour;
208 if (neigh) {
209 struct hh_cache *hh = &neigh->hh;
210 if (hh->hh_len)
211 return neigh_hh_output(hh, skb);
212 else
213 return dst->neighbour->output(skb);
214 }
211 if (net_ratelimit())
212 printk(KERN_DEBUG "ip_finish_output2: No header cache and no neighbour!\n");
213 kfree_skb(skb);
214 return -EINVAL;
215}
216
217static inline int ip_skb_dst_mtu(struct sk_buff *skb)
218{

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484 * we can switch to copy when see the first bad fragment.
485 */
486 if (skb_has_frag_list(skb)) {
487 struct sk_buff *frag, *frag2;
488 int first_len = skb_pagelen(skb);
489
490 if (first_len - hlen > mtu ||
491 ((first_len - hlen) & 7) ||
215 if (net_ratelimit())
216 printk(KERN_DEBUG "ip_finish_output2: No header cache and no neighbour!\n");
217 kfree_skb(skb);
218 return -EINVAL;
219}
220
221static inline int ip_skb_dst_mtu(struct sk_buff *skb)
222{

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488 * we can switch to copy when see the first bad fragment.
489 */
490 if (skb_has_frag_list(skb)) {
491 struct sk_buff *frag, *frag2;
492 int first_len = skb_pagelen(skb);
493
494 if (first_len - hlen > mtu ||
495 ((first_len - hlen) & 7) ||
492 (iph->frag_off & htons(IP_MF|IP_OFFSET)) ||
496 ip_is_fragment(iph) ||
493 skb_cloned(skb))
494 goto slow_path;
495
496 skb_walk_frags(skb, frag) {
497 /* Correct geometry. */
498 if (frag->len > mtu ||
499 ((frag->len & 7) && frag->next) ||
500 skb_headroom(frag) < hlen)

--- 1029 unchanged lines hidden --- 		497 skb_cloned(skb))
498 goto slow_path;
499
500 skb_walk_frags(skb, frag) {
501 /* Correct geometry. */
502 if (frag->len > mtu ||
503 ((frag->len & 7) && frag->next) ||
504 skb_headroom(frag) < hlen)

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