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Differential D8556 Diff 42257 head/sys/netinet/tcp_output.c

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head/sys/netinet/tcp_output.c

Show First 20 Lines • Show All 200 Lines • ▼ Show 20 Lines#ifdef TCPDEBUG
struct ipovly *ipov = NULL; struct ipovly *ipov = NULL;
#endif #endif
struct tcphdr *th; struct tcphdr *th;
u_char opt[TCP_MAXOLEN]; u_char opt[TCP_MAXOLEN];
unsigned ipoptlen, optlen, hdrlen; unsigned ipoptlen, optlen, hdrlen;
#if defined(IPSEC) || defined(IPSEC_SUPPORT) #if defined(IPSEC) || defined(IPSEC_SUPPORT)
unsigned ipsec_optlen = 0; unsigned ipsec_optlen = 0;
#endif #endif
int idle, sendalot; int idle, sendalot, curticks;
int sack_rxmit, sack_bytes_rxmt; int sack_rxmit, sack_bytes_rxmt;
struct sackhole *p; struct sackhole *p;
int tso, mtu; int tso, mtu;
struct tcpopt to; struct tcpopt to;
unsigned int wanted_cookie = 0; unsigned int wanted_cookie = 0;
unsigned int dont_sendalot = 0; unsigned int dont_sendalot = 0;
#if 0 #if 0
int maxburst = TCP_MAXBURST; int maxburst = TCP_MAXBURST;
▲ Show 20 Lines • Show All 585 Lines • ▼ Show 20 Lines if ((tp->t_flags & TF_NOOPT) == 0) {
/* Window scaling. */ /* Window scaling. */
if ((flags & TH_SYN) && (tp->t_flags & TF_REQ_SCALE)) { if ((flags & TH_SYN) && (tp->t_flags & TF_REQ_SCALE)) {
to.to_wscale = tp->request_r_scale; to.to_wscale = tp->request_r_scale;
to.to_flags |= TOF_SCALE; to.to_flags |= TOF_SCALE;
} }
/* Timestamps. */ /* Timestamps. */
if ((tp->t_flags & TF_RCVD_TSTMP) || if ((tp->t_flags & TF_RCVD_TSTMP) ||
((flags & TH_SYN) && (tp->t_flags & TF_REQ_TSTMP))) { ((flags & TH_SYN) && (tp->t_flags & TF_REQ_TSTMP))) {
to.to_tsval = tcp_ts_getticks() + tp->ts_offset; curticks = tcp_ts_getticks();
to.to_tsval = curticks + tp->ts_offset;
to.to_tsecr = tp->ts_recent; to.to_tsecr = tp->ts_recent;
to.to_flags |= TOF_TS; to.to_flags |= TOF_TS;
if (tp->t_rxtshift == 1)
tp->t_badrxtwin = curticks;
} }
/* Set receive buffer autosizing timestamp. */ /* Set receive buffer autosizing timestamp. */
if (tp->rfbuf_ts == 0 && if (tp->rfbuf_ts == 0 &&
(so->so_rcv.sb_flags & SB_AUTOSIZE)) (so->so_rcv.sb_flags & SB_AUTOSIZE))
tp->rfbuf_ts = tcp_ts_getticks(); tp->rfbuf_ts = tcp_ts_getticks();
/* Selective ACK's. */ /* Selective ACK's. */
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