mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-18 10:35:55 +00:00
Add "show inpcb", "show tcpcb" DDB commands, which should come in handy
for debugging sblock and other network panics.
This commit is contained in:
Robert Watson
parent
ba000fb2c1
commit
497057eeea
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=166807
@ -1,6 +1,8 @@
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/*-
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* Copyright (c) 1982, 1986, 1991, 1993, 1995
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* The Regents of the University of California. All rights reserved.
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* The Regents of the University of California.
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* Copyright (c) 2007 Robert N. M. Watson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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@ -30,6 +32,7 @@
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* $FreeBSD$
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*/
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#include "opt_ddb.h"
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#include "opt_ipsec.h"
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#include "opt_inet6.h"
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#include "opt_mac.h"
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@ -48,6 +51,10 @@
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#include <sys/kernel.h>
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#include <sys/sysctl.h>
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#ifdef DDB
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#include <ddb/ddb.h>
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#endif
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#include <vm/uma.h>
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#include <net/if.h>
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@ -1233,3 +1240,246 @@ ipport_tick(void *xtp)
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ipport_tcplastcount = ipport_tcpallocs;
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callout_reset(&ipport_tick_callout, hz, ipport_tick, NULL);
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}
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#ifdef DDB
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static void
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db_print_indent(int indent)
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{
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int i;
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for (i = 0; i < indent; i++)
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db_printf(" ");
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}
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static void
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db_print_inconninfo(struct in_conninfo *inc, const char *name, int indent)
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{
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char faddr_str[48], laddr_str[48];
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db_print_indent(indent);
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db_printf("%s at %p\n", name, inc);
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indent += 2;
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if (inc->inc_flags == 1) {
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/* IPv6. */
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ip6_sprintf(laddr_str, &inc->inc6_laddr);
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ip6_sprintf(faddr_str, &inc->inc6_faddr);
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} else {
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/* IPv4. */
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inet_ntoa_r(inc->inc_laddr, laddr_str);
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inet_ntoa_r(inc->inc_faddr, faddr_str);
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}
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db_print_indent(indent);
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db_printf("inc_laddr %s inc_lport %u\n", laddr_str,
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ntohs(inc->inc_lport));
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db_print_indent(indent);
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db_printf("inc_faddr %s inc_fport %u\n", faddr_str,
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ntohs(inc->inc_fport));
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}
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static void
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db_print_inpflags(int inp_flags)
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{
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int comma;
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comma = 0;
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if (inp_flags & INP_RECVOPTS) {
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db_printf("%sINP_RECVOPTS", comma ? ", " : "");
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comma = 1;
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}
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if (inp_flags & INP_RECVRETOPTS) {
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db_printf("%sINP_RECVRETOPTS", comma ? ", " : "");
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comma = 1;
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}
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if (inp_flags & INP_RECVDSTADDR) {
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db_printf("%sINP_RECVDSTADDR", comma ? ", " : "");
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comma = 1;
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}
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if (inp_flags & INP_HDRINCL) {
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db_printf("%sINP_HDRINCL", comma ? ", " : "");
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comma = 1;
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}
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if (inp_flags & INP_HIGHPORT) {
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db_printf("%sINP_HIGHPORT", comma ? ", " : "");
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comma = 1;
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}
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if (inp_flags & INP_LOWPORT) {
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db_printf("%sINP_LOWPORT", comma ? ", " : "");
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comma = 1;
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}
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if (inp_flags & INP_ANONPORT) {
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db_printf("%sINP_ANONPORT", comma ? ", " : "");
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comma = 1;
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}
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if (inp_flags & INP_RECVIF) {
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db_printf("%sINP_RECVIF", comma ? ", " : "");
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comma = 1;
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}
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if (inp_flags & INP_MTUDISC) {
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db_printf("%sINP_MTUDISC", comma ? ", " : "");
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comma = 1;
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}
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if (inp_flags & INP_FAITH) {
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db_printf("%sINP_FAITH", comma ? ", " : "");
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comma = 1;
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}
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if (inp_flags & INP_RECVTTL) {
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db_printf("%sINP_RECVTTL", comma ? ", " : "");
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comma = 1;
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}
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if (inp_flags & INP_DONTFRAG) {
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db_printf("%sINP_DONTFRAG", comma ? ", " : "");
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comma = 1;
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}
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if (inp_flags & IN6P_IPV6_V6ONLY) {
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db_printf("%sIN6P_IPV6_V6ONLY", comma ? ", " : "");
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comma = 1;
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}
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if (inp_flags & IN6P_PKTINFO) {
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db_printf("%sIN6P_PKTINFO", comma ? ", " : "");
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comma = 1;
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}
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if (inp_flags & IN6P_HOPLIMIT) {
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db_printf("%sIN6P_HOPLIMIT", comma ? ", " : "");
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comma = 1;
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}
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if (inp_flags & IN6P_HOPOPTS) {
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db_printf("%sIN6P_HOPOPTS", comma ? ", " : "");
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comma = 1;
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}
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if (inp_flags & IN6P_DSTOPTS) {
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db_printf("%sIN6P_DSTOPTS", comma ? ", " : "");
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comma = 1;
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}
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if (inp_flags & IN6P_RTHDR) {
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db_printf("%sIN6P_RTHDR", comma ? ", " : "");
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comma = 1;
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}
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if (inp_flags & IN6P_RTHDRDSTOPTS) {
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db_printf("%sIN6P_RTHDRDSTOPTS", comma ? ", " : "");
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comma = 1;
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}
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if (inp_flags & IN6P_TCLASS) {
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db_printf("%sIN6P_TCLASS", comma ? ", " : "");
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comma = 1;
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}
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if (inp_flags & IN6P_AUTOFLOWLABEL) {
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db_printf("%sIN6P_AUTOFLOWLABEL", comma ? ", " : "");
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comma = 1;
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}
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if (inp_flags & IN6P_RFC2292) {
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db_printf("%sIN6P_RFC2292", comma ? ", " : "");
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comma = 1;
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}
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if (inp_flags & IN6P_MTU) {
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db_printf("IN6P_MTU%s", comma ? ", " : "");
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comma = 1;
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}
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}
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static void
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db_print_inpvflag(u_char inp_vflag)
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{
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int comma;
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comma = 0;
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if (inp_vflag & INP_IPV4) {
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db_printf("%sINP_IPV4", comma ? ", " : "");
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comma = 1;
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}
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if (inp_vflag & INP_IPV6) {
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db_printf("%sINP_IPV6", comma ? ", " : "");
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comma = 1;
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}
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if (inp_vflag & INP_IPV6PROTO) {
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db_printf("%sINP_IPV6PROTO", comma ? ", " : "");
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comma = 1;
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}
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if (inp_vflag & INP_TIMEWAIT) {
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db_printf("%sINP_TIMEWAIT", comma ? ", " : "");
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comma = 1;
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}
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if (inp_vflag & INP_ONESBCAST) {
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db_printf("%sINP_ONESBCAST", comma ? ", " : "");
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comma = 1;
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}
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if (inp_vflag & INP_DROPPED) {
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db_printf("%sINP_DROPPED", comma ? ", " : "");
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comma = 1;
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}
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if (inp_vflag & INP_SOCKREF) {
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db_printf("%sINP_SOCKREF", comma ? ", " : "");
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comma = 1;
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}
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}
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void
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db_print_inpcb(struct inpcb *inp, const char *name, int indent)
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{
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db_print_indent(indent);
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db_printf("%s at %p\n", name, inp);
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indent += 2;
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db_print_indent(indent);
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db_printf("inp_flow: 0x%x\n", inp->inp_flow);
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db_print_inconninfo(&inp->inp_inc, "inp_conninfo", indent);
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db_print_indent(indent);
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db_printf("inp_ppcb: %p inp_pcbinfo: %p inp_socket: %p\n",
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inp->inp_ppcb, inp->inp_pcbinfo, inp->inp_socket);
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db_print_indent(indent);
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db_printf("inp_label: %p inp_flags: 0x%x (",
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inp->inp_label, inp->inp_flags);
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db_print_inpflags(inp->inp_flags);
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db_printf(")\n");
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db_print_indent(indent);
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db_printf("inp_sp: %p inp_vflag: 0x%x (", inp->inp_sp,
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inp->inp_vflag);
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db_print_inpvflag(inp->inp_vflag);
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db_printf(")\n");
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db_print_indent(indent);
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db_printf("inp_ip_ttl: %d inp_ip_p: %d inp_ip_minttl: %d\n",
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inp->inp_ip_ttl, inp->inp_ip_p, inp->inp_ip_minttl);
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db_print_indent(indent);
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#ifdef INET6
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if (inp->inp_vflag & INP_IPV6) {
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db_printf("in6p_options: %p in6p_outputopts: %p "
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"in6p_moptions: %p\n", inp->in6p_options,
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inp->in6p_outputopts, inp->in6p_moptions);
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db_printf("in6p_icmp6filt: %p in6p_cksum %d "
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"in6p_hops %u\n", inp->in6p_icmp6filt, inp->in6p_cksum,
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inp->in6p_hops);
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} else
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#endif
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{
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db_printf("inp_ip_tos: %d inp_ip_options: %p "
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"inp_ip_moptions: %p\n", inp->inp_ip_tos,
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inp->inp_options, inp->inp_moptions);
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}
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db_print_indent(indent);
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db_printf("inp_phd: %p inp_gencnt: %ju\n", inp->inp_phd,
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(uintmax_t)inp->inp_gencnt);
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}
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DB_SHOW_COMMAND(inpcb, db_show_inpcb)
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{
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struct inpcb *inp;
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if (!have_addr) {
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db_printf("usage: show inpcb <addr>\n");
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return;
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}
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inp = (struct inpcb *)addr;
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db_print_inpcb(inp, "inpcb", 0);
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}
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#endif
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@ -370,6 +370,12 @@ struct sockaddr *
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void in_pcbsosetlabel(struct socket *so);
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void in_pcbremlists(struct inpcb *inp);
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void ipport_tick(void *xtp);
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/*
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* Debugging routines compiled in when DDB is present.
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*/
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void db_print_inpcb(struct inpcb *inp, const char *name, int indent);
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#endif /* _KERNEL */
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#endif /* !_NETINET_IN_PCB_H_ */
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@ -1,7 +1,7 @@
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/*-
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* Copyright (c) 1982, 1986, 1988, 1993
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* The Regents of the University of California.
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* Copyright (c) 2006 Robert N. M. Watson
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* Copyright (c) 2006-2007 Robert N. M. Watson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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@ -32,6 +32,7 @@
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* $FreeBSD$
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*/
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#include "opt_ddb.h"
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#include "opt_inet.h"
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#include "opt_inet6.h"
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#include "opt_tcpdebug.h"
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@ -51,6 +52,10 @@
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#include <sys/proc.h>
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#include <sys/jail.h>
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#ifdef DDB
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#include <ddb/ddb.h>
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#endif
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#include <net/if.h>
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#include <net/route.h>
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@ -1581,3 +1586,318 @@ tcp_usrclosed(tp)
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tcp_timer_2msl, tp);
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}
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}
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#ifdef DDB
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static void
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db_print_indent(int indent)
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{
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int i;
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for (i = 0; i < indent; i++)
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db_printf(" ");
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}
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static void
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db_print_tstate(int t_state)
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{
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switch (t_state) {
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case TCPS_CLOSED:
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db_printf("TCPS_CLOSED");
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return;
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case TCPS_LISTEN:
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db_printf("TCPS_LISTEN");
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return;
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case TCPS_SYN_SENT:
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db_printf("TCPS_SYN_SENT");
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return;
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case TCPS_SYN_RECEIVED:
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db_printf("TCPS_SYN_RECEIVED");
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return;
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case TCPS_ESTABLISHED:
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db_printf("TCPS_ESTABLISHED");
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return;
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case TCPS_CLOSE_WAIT:
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db_printf("TCPS_CLOSE_WAIT");
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return;
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case TCPS_FIN_WAIT_1:
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db_printf("TCPS_FIN_WAIT_1");
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return;
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case TCPS_CLOSING:
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db_printf("TCPS_CLOSING");
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return;
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case TCPS_LAST_ACK:
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db_printf("TCPS_LAST_ACK");
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return;
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case TCPS_FIN_WAIT_2:
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db_printf("TCPS_FIN_WAIT_2");
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return;
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case TCPS_TIME_WAIT:
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db_printf("TCPS_TIME_WAIT");
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return;
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default:
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db_printf("unknown");
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return;
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}
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}
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static void
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db_print_tflags(u_int t_flags)
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{
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int comma;
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comma = 0;
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if (t_flags & TF_ACKNOW) {
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db_printf("%sTF_ACKNOW", comma ? ", " : "");
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comma = 1;
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}
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if (t_flags & TF_DELACK) {
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db_printf("%sTF_DELACK", comma ? ", " : "");
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comma = 1;
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}
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if (t_flags & TF_NODELAY) {
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db_printf("%sTF_NODELAY", comma ? ", " : "");
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comma = 1;
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}
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if (t_flags & TF_NOOPT) {
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db_printf("%sTF_NOOPT", comma ? ", " : "");
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comma = 1;
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}
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if (t_flags & TF_SENTFIN) {
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db_printf("%sTF_SENTFIN", comma ? ", " : "");
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comma = 1;
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}
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if (t_flags & TF_REQ_SCALE) {
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db_printf("%sTF_REQ_SCALE", comma ? ", " : "");
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comma = 1;
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}
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if (t_flags & TF_RCVD_SCALE) {
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db_printf("%sTF_RECVD_SCALE", comma ? ", " : "");
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comma = 1;
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}
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if (t_flags & TF_REQ_TSTMP) {
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db_printf("%sTF_REQ_TSTMP", comma ? ", " : "");
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comma = 1;
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}
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if (t_flags & TF_RCVD_TSTMP) {
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db_printf("%sTF_RCVD_TSTMP", comma ? ", " : "");
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comma = 1;
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}
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if (t_flags & TF_SACK_PERMIT) {
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db_printf("%sTF_SACK_PERMIT", comma ? ", " : "");
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comma = 1;
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}
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if (t_flags & TF_NEEDSYN) {
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db_printf("%sTF_NEEDSYN", comma ? ", " : "");
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comma = 1;
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}
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if (t_flags & TF_NEEDFIN) {
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db_printf("%sTF_NEEDFIN", comma ? ", " : "");
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comma = 1;
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}
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if (t_flags & TF_NOPUSH) {
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db_printf("%sTF_NOPUSH", comma ? ", " : "");
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comma = 1;
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}
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if (t_flags & TF_NOPUSH) {
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db_printf("%sTF_NOPUSH", comma ? ", " : "");
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comma = 1;
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}
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if (t_flags & TF_MORETOCOME) {
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db_printf("%sTF_MORETOCOME", comma ? ", " : "");
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comma = 1;
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}
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if (t_flags & TF_LQ_OVERFLOW) {
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db_printf("%sTF_LQ_OVERFLOW", comma ? ", " : "");
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comma = 1;
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}
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if (t_flags & TF_LASTIDLE) {
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db_printf("%sTF_LASTIDLE", comma ? ", " : "");
|
||||
comma = 1;
|
||||
}
|
||||
if (t_flags & TF_RXWIN0SENT) {
|
||||
db_printf("%sTF_RXWIN0SENT", comma ? ", " : "");
|
||||
comma = 1;
|
||||
}
|
||||
if (t_flags & TF_FASTRECOVERY) {
|
||||
db_printf("%sTF_FASTRECOVERY", comma ? ", " : "");
|
||||
comma = 1;
|
||||
}
|
||||
if (t_flags & TF_WASFRECOVERY) {
|
||||
db_printf("%sTF_WASFRECOVERY", comma ? ", " : "");
|
||||
comma = 1;
|
||||
}
|
||||
if (t_flags & TF_SIGNATURE) {
|
||||
db_printf("%sTF_SIGNATURE", comma ? ", " : "");
|
||||
comma = 1;
|
||||
}
|
||||
if (t_flags & TF_FORCEDATA) {
|
||||
db_printf("%sTF_FORCEDATA", comma ? ", " : "");
|
||||
comma = 1;
|
||||
}
|
||||
if (t_flags & TF_TSO) {
|
||||
db_printf("%sTF_TSO", comma ? ", " : "");
|
||||
comma = 1;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
db_print_toobflags(char t_oobflags)
|
||||
{
|
||||
int comma;
|
||||
|
||||
comma = 0;
|
||||
if (t_oobflags & TCPOOB_HAVEDATA) {
|
||||
db_printf("%sTCPOOB_HAVEDATA", comma ? ", " : "");
|
||||
comma = 1;
|
||||
}
|
||||
if (t_oobflags & TCPOOB_HADDATA) {
|
||||
db_printf("%sTCPOOB_HADDATA", comma ? ", " : "");
|
||||
comma = 1;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
db_print_tcpcb(struct tcpcb *tp, const char *name, int indent)
|
||||
{
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("%s at %p\n", name, tp);
|
||||
|
||||
indent += 2;
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("t_segq first: %p t_segqlen: %d t_dupacks: %d\n",
|
||||
LIST_FIRST(&tp->t_segq), tp->t_segqlen, tp->t_dupacks);
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("tt_rexmt: %p tt_persist: %p tt_keep: %p\n",
|
||||
tp->tt_rexmt, tp->tt_persist, tp->tt_keep);
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("tt_2msl: %p tt_delack: %p t_inpcb: %p\n", tp->tt_2msl,
|
||||
tp->tt_delack, tp->t_inpcb);
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("t_state: %d (", tp->t_state);
|
||||
db_print_tstate(tp->t_state);
|
||||
db_printf(")\n");
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("t_flags: 0x%x (", tp->t_flags);
|
||||
db_print_tflags(tp->t_flags);
|
||||
db_printf(")\n");
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("snd_una: 0x%08x snd_max: 0x%08x snd_nxt: x0%08x\n",
|
||||
tp->snd_una, tp->snd_max, tp->snd_nxt);
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("snd_up: 0x%08x snd_wl1: 0x%08x snd_wl2: 0x%08x\n",
|
||||
tp->snd_up, tp->snd_wl1, tp->snd_wl2);
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("iss: 0x%08x irs: 0x%08x rcv_nxt: 0x%08x\n",
|
||||
tp->iss, tp->irs, tp->rcv_nxt);
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("rcv_adv: 0x%08x rcv_wnd: %lu rcv_up: 0x%08x\n",
|
||||
tp->rcv_adv, tp->rcv_wnd, tp->rcv_up);
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("snd_wnd: %lu snd_cwnd: %lu snd_bwnd: %lu\n",
|
||||
tp->snd_wnd, tp->snd_cwnd, tp->snd_bwnd);
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("snd_ssthresh: %lu snd_bandwidth: %lu snd_recover: "
|
||||
"0x%08x\n", tp->snd_ssthresh, tp->snd_bandwidth,
|
||||
tp->snd_recover);
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("t_maxopd: %u t_rcvtime: %lu t_startime: %lu\n",
|
||||
tp->t_maxopd, tp->t_rcvtime, tp->t_starttime);
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("t_rttime: %d t_rtsq: 0x%08x t_bw_rtttime: %d\n",
|
||||
tp->t_rtttime, tp->t_rtseq, tp->t_bw_rtttime);
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("t_bw_rtseq: 0x%08x t_rxtcur: %d t_maxseg: %u "
|
||||
"t_srtt: %d\n", tp->t_bw_rtseq, tp->t_rxtcur, tp->t_maxseg,
|
||||
tp->t_srtt);
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("t_rttvar: %d t_rxtshift: %d t_rttmin: %u "
|
||||
"t_rttbest: %u\n", tp->t_rttvar, tp->t_rxtshift, tp->t_rttmin,
|
||||
tp->t_rttbest);
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("t_rttupdated: %lu max_sndwnd: %lu t_softerror: %d\n",
|
||||
tp->t_rttupdated, tp->max_sndwnd, tp->t_softerror);
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("t_oobflags: 0x%x (", tp->t_oobflags);
|
||||
db_print_toobflags(tp->t_oobflags);
|
||||
db_printf(") t_iobc: 0x%02x\n", tp->t_iobc);
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("snd_scale: %u rcv_scale: %u request_r_scale: %u\n",
|
||||
tp->snd_scale, tp->rcv_scale, tp->request_r_scale);
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("requested_s_scale: %u ts_recent: %u ts_recent_age: "
|
||||
"%lu\n", tp->requested_s_scale, tp->ts_recent, tp->ts_recent_age);
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("ts_offset: %u last_ack_sent: 0x%08x snd_cwnd_prev: "
|
||||
"%lu\n", tp->ts_offset, tp->last_ack_sent, tp->snd_cwnd_prev);
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("snd_ssthresh_prev: %lu snd_recover_prev: 0x%08x "
|
||||
"t_badrxtwin: %lu\n", tp->snd_ssthresh_prev,
|
||||
tp->snd_recover_prev, tp->t_badrxtwin);
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("snd_limited: %u rcv_second: %lu rcv_pps: %lu "
|
||||
"tcv_byps: %lu\n", tp->snd_limited, tp->rcv_second, tp->rcv_pps,
|
||||
tp->rcv_byps);
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("sack_enable: %d snd_numholes: %d snd_holes first: %p\n",
|
||||
tp->sack_enable, tp->snd_numholes, TAILQ_FIRST(&tp->snd_holes));
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("snd_fack: 0x%08x rcv_numsacks: %d sack_newdata: "
|
||||
"0x%08x\n", tp->snd_fack, tp->rcv_numsacks, tp->sack_newdata);
|
||||
|
||||
/* Skip sackblks, sackhint. */
|
||||
|
||||
db_print_indent(indent);
|
||||
db_printf("t_rttlow: %d rfbuf_ts: %u rfbuf_cnt: %d\n",
|
||||
tp->t_rttlow, tp->rfbuf_ts, tp->rfbuf_cnt);
|
||||
}
|
||||
|
||||
DB_SHOW_COMMAND(tcpcb, db_show_tcpcb)
|
||||
{
|
||||
struct tcpcb *tp;
|
||||
|
||||
if (!have_addr) {
|
||||
db_printf("usage: show tcpcb <addr>\n");
|
||||
return;
|
||||
}
|
||||
tp = (struct tcpcb *)addr;
|
||||
|
||||
db_print_tcpcb(tp, "tcpcb", 0);
|
||||
}
|
||||
#endif
|
||||
|
||||
Loading…
Reference in New Issue
Block a user