tcp_output.c (242b24828472137ec4411826b86e753d49bd2c39) tcp_output.c (bd79708dbffde195226ade494aa72c345328e745)
1/*-
2 * Copyright (c) 1982, 1986, 1988, 1990, 1993, 1995
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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35#include "opt_inet.h"
36#include "opt_inet6.h"
37#include "opt_ipsec.h"
38#include "opt_tcpdebug.h"
39
40#include <sys/param.h>
41#include <sys/systm.h>
42#include <sys/domain.h>
1/*-
2 * Copyright (c) 1982, 1986, 1988, 1990, 1993, 1995
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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35#include "opt_inet.h"
36#include "opt_inet6.h"
37#include "opt_ipsec.h"
38#include "opt_tcpdebug.h"
39
40#include <sys/param.h>
41#include <sys/systm.h>
42#include <sys/domain.h>
43#ifdef TCP_HHOOK
43#include <sys/hhook.h>
44#include <sys/hhook.h>
45#endif
44#include <sys/kernel.h>
45#include <sys/lock.h>
46#include <sys/mbuf.h>
47#include <sys/mutex.h>
48#include <sys/protosw.h>
49#include <sys/sdt.h>
50#include <sys/socket.h>
51#include <sys/socketvar.h>

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135 * non-ACK.
136 */
137#define TCP_XMIT_TIMER_ASSERT(tp, len, th_flags) \
138 KASSERT(((len) == 0 && ((th_flags) & (TH_SYN | TH_FIN)) == 0) ||\
139 tcp_timer_active((tp), TT_REXMT) || \
140 tcp_timer_active((tp), TT_PERSIST), \
141 ("neither rexmt nor persist timer is set"))
142
46#include <sys/kernel.h>
47#include <sys/lock.h>
48#include <sys/mbuf.h>
49#include <sys/mutex.h>
50#include <sys/protosw.h>
51#include <sys/sdt.h>
52#include <sys/socket.h>
53#include <sys/socketvar.h>

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137 * non-ACK.
138 */
139#define TCP_XMIT_TIMER_ASSERT(tp, len, th_flags) \
140 KASSERT(((len) == 0 && ((th_flags) & (TH_SYN | TH_FIN)) == 0) ||\
141 tcp_timer_active((tp), TT_REXMT) || \
142 tcp_timer_active((tp), TT_PERSIST), \
143 ("neither rexmt nor persist timer is set"))
144
145#ifdef TCP_HHOOK
143static void inline hhook_run_tcp_est_out(struct tcpcb *tp,
144 struct tcphdr *th, struct tcpopt *to,
145 uint32_t len, int tso);
146static void inline hhook_run_tcp_est_out(struct tcpcb *tp,
147 struct tcphdr *th, struct tcpopt *to,
148 uint32_t len, int tso);
149#endif
146static void inline cc_after_idle(struct tcpcb *tp);
147
150static void inline cc_after_idle(struct tcpcb *tp);
151
152#ifdef TCP_HHOOK
148/*
149 * Wrapper for the TCP established output helper hook.
150 */
151static void inline
152hhook_run_tcp_est_out(struct tcpcb *tp, struct tcphdr *th,
153 struct tcpopt *to, uint32_t len, int tso)
154{
155 struct tcp_hhook_data hhook_data;

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160 hhook_data.to = to;
161 hhook_data.len = len;
162 hhook_data.tso = tso;
163
164 hhook_run_hooks(V_tcp_hhh[HHOOK_TCP_EST_OUT], &hhook_data,
165 tp->osd);
166 }
167}
153/*
154 * Wrapper for the TCP established output helper hook.
155 */
156static void inline
157hhook_run_tcp_est_out(struct tcpcb *tp, struct tcphdr *th,
158 struct tcpopt *to, uint32_t len, int tso)
159{
160 struct tcp_hhook_data hhook_data;

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165 hhook_data.to = to;
166 hhook_data.len = len;
167 hhook_data.tso = tso;
168
169 hhook_run_hooks(V_tcp_hhh[HHOOK_TCP_EST_OUT], &hhook_data,
170 tp->osd);
171 }
172}
173#endif
168
169/*
170 * CC wrapper hook functions
171 */
172static void inline
173cc_after_idle(struct tcpcb *tp)
174{
175 INP_WLOCK_ASSERT(tp->t_inpcb);

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1301 ("%s: mbuf chain shorter than expected: %d + %u + %u - %u != %u",
1302 __func__, len, hdrlen, ipoptlen, ipsec_optlen, m_length(m, NULL)));
1303#else
1304 KASSERT(len + hdrlen + ipoptlen == m_length(m, NULL),
1305 ("%s: mbuf chain shorter than expected: %d + %u + %u != %u",
1306 __func__, len, hdrlen, ipoptlen, m_length(m, NULL)));
1307#endif
1308
174
175/*
176 * CC wrapper hook functions
177 */
178static void inline
179cc_after_idle(struct tcpcb *tp)
180{
181 INP_WLOCK_ASSERT(tp->t_inpcb);

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1307 ("%s: mbuf chain shorter than expected: %d + %u + %u - %u != %u",
1308 __func__, len, hdrlen, ipoptlen, ipsec_optlen, m_length(m, NULL)));
1309#else
1310 KASSERT(len + hdrlen + ipoptlen == m_length(m, NULL),
1311 ("%s: mbuf chain shorter than expected: %d + %u + %u != %u",
1312 __func__, len, hdrlen, ipoptlen, m_length(m, NULL)));
1313#endif
1314
1315#ifdef TCP_HHOOK
1309 /* Run HHOOK_TCP_ESTABLISHED_OUT helper hooks. */
1310 hhook_run_tcp_est_out(tp, th, &to, len, tso);
1316 /* Run HHOOK_TCP_ESTABLISHED_OUT helper hooks. */
1317 hhook_run_tcp_est_out(tp, th, &to, len, tso);
1318#endif
1311
1312#ifdef TCPDEBUG
1313 /*
1314 * Trace.
1315 */
1316 if (so->so_options & SO_DEBUG) {
1317 u_short save = 0;
1318#ifdef INET6

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1320#ifdef TCPDEBUG
1321 /*
1322 * Trace.
1323 */
1324 if (so->so_options & SO_DEBUG) {
1325 u_short save = 0;
1326#ifdef INET6

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