/* * Copyright (c) 1982, 1986, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)tcp_debug.c 8.1 (Berkeley) 6/10/93 * $FreeBSD: src/sys/netinet/tcp_debug.c,v 1.16.2.1 2000/07/15 07:14:31 kris Exp $ * $DragonFly: src/sys/netinet/tcp_debug.c,v 1.2 2003/06/17 04:28:51 dillon Exp $ */ #include "opt_inet.h" #include "opt_inet6.h" #include "opt_tcpdebug.h" #ifndef INET #error The option TCPDEBUG requires option INET. #endif #ifdef TCPDEBUG /* load symbolic names */ #define PRUREQUESTS #define TCPSTATES #define TCPTIMERS #define TANAMES #endif #include #include #include #include #include #include #include #ifdef INET6 #include #endif #include #include #include #include #include #include #include #ifdef TCPDEBUG static int tcpconsdebug = 0; #endif static struct tcp_debug tcp_debug[TCP_NDEBUG]; static int tcp_debx; /* * Tcp debug routines */ void tcp_trace(act, ostate, tp, ipgen, th, req) short act, ostate; struct tcpcb *tp; void *ipgen; struct tcphdr *th; int req; { #ifdef INET6 int isipv6; #endif /* INET6 */ tcp_seq seq, ack; int len, flags; struct tcp_debug *td = &tcp_debug[tcp_debx++]; #ifdef INET6 isipv6 = (ipgen != NULL && ((struct ip *)ipgen)->ip_v == 6) ? 1 : 0; #endif /* INET6 */ td->td_family = #ifdef INET6 (isipv6 != 0) ? AF_INET6 : #endif AF_INET; if (tcp_debx == TCP_NDEBUG) tcp_debx = 0; td->td_time = iptime(); td->td_act = act; td->td_ostate = ostate; td->td_tcb = (caddr_t)tp; if (tp) td->td_cb = *tp; else bzero((caddr_t)&td->td_cb, sizeof (*tp)); if (ipgen) { switch (td->td_family) { case AF_INET: bcopy((caddr_t)ipgen, (caddr_t)&td->td_ti.ti_i, sizeof(td->td_ti.ti_i)); bzero((caddr_t)td->td_ip6buf, sizeof(td->td_ip6buf)); break; #ifdef INET6 case AF_INET6: bcopy((caddr_t)ipgen, (caddr_t)td->td_ip6buf, sizeof(td->td_ip6buf)); bzero((caddr_t)&td->td_ti.ti_i, sizeof(td->td_ti.ti_i)); break; #endif default: bzero((caddr_t)td->td_ip6buf, sizeof(td->td_ip6buf)); bzero((caddr_t)&td->td_ti.ti_i, sizeof(td->td_ti.ti_i)); break; } } else { bzero((caddr_t)&td->td_ti.ti_i, sizeof(td->td_ti.ti_i)); bzero((caddr_t)td->td_ip6buf, sizeof(td->td_ip6buf)); } if (th) { switch (td->td_family) { case AF_INET: td->td_ti.ti_t = *th; bzero((caddr_t)&td->td_ti6.th, sizeof(td->td_ti6.th)); break; #ifdef INET6 case AF_INET6: td->td_ti6.th = *th; bzero((caddr_t)&td->td_ti.ti_t, sizeof(td->td_ti.ti_t)); break; #endif default: bzero((caddr_t)&td->td_ti.ti_t, sizeof(td->td_ti.ti_t)); bzero((caddr_t)&td->td_ti6.th, sizeof(td->td_ti6.th)); break; } } else { bzero((caddr_t)&td->td_ti.ti_t, sizeof(td->td_ti.ti_t)); bzero((caddr_t)&td->td_ti6.th, sizeof(td->td_ti6.th)); } td->td_req = req; #ifdef TCPDEBUG if (tcpconsdebug == 0) return; if (tp) printf("%p %s:", tp, tcpstates[ostate]); else printf("???????? "); printf("%s ", tanames[act]); switch (act) { case TA_INPUT: case TA_OUTPUT: case TA_DROP: if (ipgen == NULL || th == NULL) break; seq = th->th_seq; ack = th->th_ack; len = #ifdef INET6 isipv6 ? ((struct ip6_hdr *)ipgen)->ip6_plen : #endif ((struct ip *)ipgen)->ip_len; if (act == TA_OUTPUT) { seq = ntohl(seq); ack = ntohl(ack); len = ntohs((u_short)len); } if (act == TA_OUTPUT) len -= sizeof (struct tcphdr); if (len) printf("[%x..%x)", seq, seq+len); else printf("%x", seq); printf("@%x, urp=%x", ack, th->th_urp); flags = th->th_flags; if (flags) { char *cp = "<"; #define pf(f) { \ if (th->th_flags & TH_##f) { \ printf("%s%s", cp, #f); \ cp = ","; \ } \ } pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG); printf(">"); } break; case TA_USER: printf("%s", prurequests[req&0xff]); if ((req & 0xff) == PRU_SLOWTIMO) printf("<%s>", tcptimers[req>>8]); break; } if (tp) printf(" -> %s", tcpstates[tp->t_state]); /* print out internal state of tp !?! */ printf("\n"); if (tp == 0) return; printf( "\trcv_(nxt,wnd,up) (%lx,%lx,%lx) snd_(una,nxt,max) (%lx,%lx,%lx)\n", (u_long)tp->rcv_nxt, tp->rcv_wnd, (u_long)tp->rcv_up, (u_long)tp->snd_una, (u_long)tp->snd_nxt, (u_long)tp->snd_max); printf("\tsnd_(wl1,wl2,wnd) (%lx,%lx,%lx)\n", (u_long)tp->snd_wl1, (u_long)tp->snd_wl2, tp->snd_wnd); #endif /* TCPDEBUG */ }