*
* Implementation of the Transmission Control Protocol(TCP).
*
- * Version: $Id: tcp_output.c,v 1.146 2002/02/01 22:01:04 davem Exp $
- *
* Authors: Ross Biro
* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
* Mark Evans, <evansmp@uhura.aston.ac.uk>
md5,
sk, NULL, NULL,
tcp_hdr(skb),
- sk->sk_protocol,
skb->len);
}
#endif
xmit_size_goal = mss_now;
if (doing_tso) {
- xmit_size_goal = (65535 -
+ xmit_size_goal = ((sk->sk_gso_max_size - 1) -
inet_csk(sk)->icsk_af_ops->net_header_len -
inet_csk(sk)->icsk_ext_hdr_len -
tp->tcp_header_len);
needed = min(skb->len, window);
- if (skb == tcp_write_queue_tail(sk) && cwnd_len <= needed)
+ if (cwnd_len <= needed)
return cwnd_len;
return needed - needed % mss_now;
limit = min(send_win, cong_win);
/* If a full-sized TSO skb can be sent, do it. */
- if (limit >= 65536)
+ if (limit >= sk->sk_gso_max_size)
goto send_now;
if (sysctl_tcp_tso_win_divisor) {
{
struct tcp_sock *tp = tcp_sk(sk);
struct inet_connection_sock *icsk = inet_csk(sk);
- unsigned int cur_mss = tcp_current_mss(sk, 0);
+ unsigned int cur_mss;
int err;
/* Inconslusive MTU probe */
return -ENOMEM;
}
+ if (inet_csk(sk)->icsk_af_ops->rebuild_header(sk))
+ return -EHOSTUNREACH; /* Routing failure or similar. */
+
+ cur_mss = tcp_current_mss(sk, 0);
+
/* If receiver has shrunk his window, and skb is out of
* new window, do not retransmit it. The exception is the
* case, when window is shrunk to zero. In this case
(sysctl_tcp_retrans_collapse != 0))
tcp_retrans_try_collapse(sk, skb, cur_mss);
- if (inet_csk(sk)->icsk_af_ops->rebuild_header(sk))
- return -EHOSTUNREACH; /* Routing failure or similar. */
-
/* Some Solaris stacks overoptimize and ignore the FIN on a
* retransmit when old data is attached. So strip it off
* since it is cheap to do so and saves bytes on the network.
if (sacked & TCPCB_LOST) {
if (!(sacked & (TCPCB_SACKED_ACKED|TCPCB_SACKED_RETRANS))) {
+ int mib_idx;
+
if (tcp_retransmit_skb(sk, skb)) {
tp->retransmit_skb_hint = NULL;
return;
}
if (icsk->icsk_ca_state != TCP_CA_Loss)
- NET_INC_STATS_BH(LINUX_MIB_TCPFASTRETRANS);
+ mib_idx = LINUX_MIB_TCPFASTRETRANS;
else
- NET_INC_STATS_BH(LINUX_MIB_TCPSLOWSTARTRETRANS);
+ mib_idx = LINUX_MIB_TCPSLOWSTARTRETRANS;
+ NET_INC_STATS_BH(mib_idx);
if (skb == tcp_write_queue_head(sk))
inet_csk_reset_xmit_timer(sk, ICSK_TIME_RETRANS,
TCP_SKB_CB(skb)->when = tcp_time_stamp;
if (tcp_transmit_skb(sk, skb, 0, priority))
NET_INC_STATS(LINUX_MIB_TCPABORTFAILED);
+
+ TCP_INC_STATS(TCP_MIB_OUTRSTS);
}
/* WARNING: This routine must only be called when we have already sent
/* RFC1323: The window in SYN & SYN/ACK segments is never scaled. */
th->window = htons(min(req->rcv_wnd, 65535U));
-
+#ifdef CONFIG_SYN_COOKIES
+ if (unlikely(req->cookie_ts))
+ TCP_SKB_CB(skb)->when = cookie_init_timestamp(req);
+ else
+#endif
TCP_SKB_CB(skb)->when = tcp_time_stamp;
tcp_syn_build_options((__be32 *)(th + 1), dst_metric(dst, RTAX_ADVMSS), ireq->tstamp_ok,
ireq->sack_ok, ireq->wscale_ok, ireq->rcv_wscale,
tp->af_specific->calc_md5_hash(md5_hash_location,
md5,
NULL, dst, req,
- tcp_hdr(skb), sk->sk_protocol,
+ tcp_hdr(skb),
skb->len);
}
#endif
}
}
+EXPORT_SYMBOL(tcp_select_initial_window);
EXPORT_SYMBOL(tcp_connect);
EXPORT_SYMBOL(tcp_make_synack);
EXPORT_SYMBOL(tcp_simple_retransmit);