| tcp_output.c (251296) | tcp_output.c (254889) |
|---|---|
| 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 --- 16 unchanged lines hidden (view full) --- 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)tcp_output.c 8.4 (Berkeley) 5/24/95 30 */ 31 32#include <sys/cdefs.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 --- 16 unchanged lines hidden (view full) --- 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)tcp_output.c 8.4 (Berkeley) 5/24/95 30 */ 31 32#include <sys/cdefs.h> |
| 33__FBSDID("$FreeBSD: head/sys/netinet/tcp_output.c 251296 2013-06-03 12:55:13Z andre $"); | 33__FBSDID("$FreeBSD: head/sys/netinet/tcp_output.c 254889 2013-08-25 21:54:41Z markj $"); |
| 34 35#include "opt_inet.h" 36#include "opt_inet6.h" 37#include "opt_ipsec.h" | 34 35#include "opt_inet.h" 36#include "opt_inet6.h" 37#include "opt_ipsec.h" |
| 38#include "opt_kdtrace.h" |
|
| 38#include "opt_tcpdebug.h" 39 40#include <sys/param.h> 41#include <sys/systm.h> 42#include <sys/domain.h> 43#include <sys/hhook.h> 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> | 39#include "opt_tcpdebug.h" 40 41#include <sys/param.h> 42#include <sys/systm.h> 43#include <sys/domain.h> 44#include <sys/hhook.h> 45#include <sys/kernel.h> 46#include <sys/lock.h> 47#include <sys/mbuf.h> 48#include <sys/mutex.h> 49#include <sys/protosw.h> |
| 50#include <sys/sdt.h> |
|
| 49#include <sys/socket.h> 50#include <sys/socketvar.h> 51#include <sys/sysctl.h> 52 53#include <net/if.h> 54#include <net/route.h> 55#include <net/vnet.h> 56 57#include <netinet/cc.h> 58#include <netinet/in.h> | 51#include <sys/socket.h> 52#include <sys/socketvar.h> 53#include <sys/sysctl.h> 54 55#include <net/if.h> 56#include <net/route.h> 57#include <net/vnet.h> 58 59#include <netinet/cc.h> 60#include <netinet/in.h> |
| 61#include <netinet/in_kdtrace.h> |
|
| 59#include <netinet/in_systm.h> 60#include <netinet/ip.h> 61#include <netinet/in_pcb.h> 62#include <netinet/ip_var.h> 63#include <netinet/ip_options.h> 64#ifdef INET6 65#include <netinet6/in6_pcb.h> 66#include <netinet/ip6.h> --- 1102 unchanged lines hidden (view full) --- 1169 /* 1170 * we separately set hoplimit for every segment, since the 1171 * user might want to change the value via setsockopt. 1172 * Also, desired default hop limit might be changed via 1173 * Neighbor Discovery. 1174 */ 1175 ip6->ip6_hlim = in6_selecthlim(tp->t_inpcb, NULL); 1176 | 62#include <netinet/in_systm.h> 63#include <netinet/ip.h> 64#include <netinet/in_pcb.h> 65#include <netinet/ip_var.h> 66#include <netinet/ip_options.h> 67#ifdef INET6 68#include <netinet6/in6_pcb.h> 69#include <netinet/ip6.h> --- 1102 unchanged lines hidden (view full) --- 1172 /* 1173 * we separately set hoplimit for every segment, since the 1174 * user might want to change the value via setsockopt. 1175 * Also, desired default hop limit might be changed via 1176 * Neighbor Discovery. 1177 */ 1178 ip6->ip6_hlim = in6_selecthlim(tp->t_inpcb, NULL); 1179 |
| 1180 /* 1181 * Set the packet size here for the benefit of DTrace probes. 1182 * ip6_output() will set it properly; it's supposed to include 1183 * the option header lengths as well. 1184 */ 1185 ip6->ip6_plen = htons(m->m_pkthdr.len - sizeof(*ip6)); 1186 1187 if (tp->t_state == TCPS_SYN_SENT) 1188 TCP_PROBE5(connect_request, NULL, tp, ip6, tp, th); 1189 1190 TCP_PROBE5(send, NULL, tp, ip6, tp, th); 1191 |
|
| 1177 /* TODO: IPv6 IP6TOS_ECT bit on */ 1178 error = ip6_output(m, tp->t_inpcb->in6p_outputopts, &ro, 1179 ((so->so_options & SO_DONTROUTE) ? IP_ROUTETOIF : 0), 1180 NULL, NULL, tp->t_inpcb); 1181 1182 if (error == EMSGSIZE && ro.ro_rt != NULL) 1183 mtu = ro.ro_rt->rt_rmx.rmx_mtu; 1184 RO_RTFREE(&ro); --- 18 unchanged lines hidden (view full) --- 1203 * Section 2. However the tcp hostcache migitates the problem 1204 * so it affects only the first tcp connection with a host. 1205 * 1206 * NB: Don't set DF on small MTU/MSS to have a safe fallback. 1207 */ 1208 if (V_path_mtu_discovery && tp->t_maxopd > V_tcp_minmss) 1209 ip->ip_off |= htons(IP_DF); 1210 | 1192 /* TODO: IPv6 IP6TOS_ECT bit on */ 1193 error = ip6_output(m, tp->t_inpcb->in6p_outputopts, &ro, 1194 ((so->so_options & SO_DONTROUTE) ? IP_ROUTETOIF : 0), 1195 NULL, NULL, tp->t_inpcb); 1196 1197 if (error == EMSGSIZE && ro.ro_rt != NULL) 1198 mtu = ro.ro_rt->rt_rmx.rmx_mtu; 1199 RO_RTFREE(&ro); --- 18 unchanged lines hidden (view full) --- 1218 * Section 2. However the tcp hostcache migitates the problem 1219 * so it affects only the first tcp connection with a host. 1220 * 1221 * NB: Don't set DF on small MTU/MSS to have a safe fallback. 1222 */ 1223 if (V_path_mtu_discovery && tp->t_maxopd > V_tcp_minmss) 1224 ip->ip_off |= htons(IP_DF); 1225 |
| 1226 if (tp->t_state == TCPS_SYN_SENT) 1227 TCP_PROBE5(connect_request, NULL, tp, ip, tp, th); 1228 1229 TCP_PROBE5(send, NULL, tp, ip, tp, th); 1230 |
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| 1211 error = ip_output(m, tp->t_inpcb->inp_options, &ro, 1212 ((so->so_options & SO_DONTROUTE) ? IP_ROUTETOIF : 0), 0, 1213 tp->t_inpcb); 1214 1215 if (error == EMSGSIZE && ro.ro_rt != NULL) 1216 mtu = ro.ro_rt->rt_rmx.rmx_mtu; 1217 RO_RTFREE(&ro); 1218 } --- 343 unchanged lines hidden --- | 1231 error = ip_output(m, tp->t_inpcb->inp_options, &ro, 1232 ((so->so_options & SO_DONTROUTE) ? IP_ROUTETOIF : 0), 0, 1233 tp->t_inpcb); 1234 1235 if (error == EMSGSIZE && ro.ro_rt != NULL) 1236 mtu = ro.ro_rt->rt_rmx.rmx_mtu; 1237 RO_RTFREE(&ro); 1238 } --- 343 unchanged lines hidden --- |