tcp_ipv4.c (46d3ceabd8d98ed0ad10f20c595ca784e34786c5) tcp_ipv4.c (55be7a9c6074f749d617a7fc1914c9a23505438c)
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 * Implementation of the Transmission Control Protocol(TCP).
7 *
8 * IPv4 specific functions

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316 * clear that the old packet has been
317 * dropped. This is the new "fast" path mtu
318 * discovery.
319 */
320 tcp_simple_retransmit(sk);
321 } /* else let the usual retransmit timer handle it */
322}
323
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 * Implementation of the Transmission Control Protocol(TCP).
7 *
8 * IPv4 specific functions

--- 307 unchanged lines hidden (view full) ---

316 * clear that the old packet has been
317 * dropped. This is the new "fast" path mtu
318 * discovery.
319 */
320 tcp_simple_retransmit(sk);
321 } /* else let the usual retransmit timer handle it */
322}
323
324static void do_redirect(struct sk_buff *skb, struct sock *sk)
325{
326 struct dst_entry *dst = __sk_dst_check(sk, 0);
327
328 if (dst && dst->ops->redirect)
329 dst->ops->redirect(dst, skb);
330}
331
324/*
325 * This routine is called by the ICMP module when it gets some
326 * sort of error condition. If err < 0 then the socket should
327 * be closed and the error returned to the user. If err > 0
328 * it's just the icmp type << 8 | icmp code. After adjustment
329 * header points to the first 8 bytes of the tcp header. We need
330 * to find the appropriate port.
331 *

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389 seq = ntohl(th->seq);
390 if (sk->sk_state != TCP_LISTEN &&
391 !between(seq, tp->snd_una, tp->snd_nxt)) {
392 NET_INC_STATS_BH(net, LINUX_MIB_OUTOFWINDOWICMPS);
393 goto out;
394 }
395
396 switch (type) {
332/*
333 * This routine is called by the ICMP module when it gets some
334 * sort of error condition. If err < 0 then the socket should
335 * be closed and the error returned to the user. If err > 0
336 * it's just the icmp type << 8 | icmp code. After adjustment
337 * header points to the first 8 bytes of the tcp header. We need
338 * to find the appropriate port.
339 *

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397 seq = ntohl(th->seq);
398 if (sk->sk_state != TCP_LISTEN &&
399 !between(seq, tp->snd_una, tp->snd_nxt)) {
400 NET_INC_STATS_BH(net, LINUX_MIB_OUTOFWINDOWICMPS);
401 goto out;
402 }
403
404 switch (type) {
405 case ICMP_REDIRECT:
406 do_redirect(icmp_skb, sk);
407 goto out;
397 case ICMP_SOURCE_QUENCH:
398 /* Just silently ignore these. */
399 goto out;
400 case ICMP_PARAMETERPROB:
401 err = EPROTO;
402 break;
403 case ICMP_DEST_UNREACH:
404 if (code > NR_ICMP_UNREACH)

--- 2244 unchanged lines hidden --- 		408 case ICMP_SOURCE_QUENCH:
409 /* Just silently ignore these. */
410 goto out;
411 case ICMP_PARAMETERPROB:
412 err = EPROTO;
413 break;
414 case ICMP_DEST_UNREACH:
415 if (code > NR_ICMP_UNREACH)

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