diff options
Diffstat (limited to 'sys/netinet/tcp_debug.c')
-rw-r--r-- | sys/netinet/tcp_debug.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/sys/netinet/tcp_debug.c b/sys/netinet/tcp_debug.c new file mode 100644 index 0000000..ddb3092 --- /dev/null +++ b/sys/netinet/tcp_debug.c @@ -0,0 +1,159 @@ +/* + * 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 + */ + +#ifdef TCPDEBUG +/* load symbolic names */ +#define PRUREQUESTS +#define TCPSTATES +#define TCPTIMERS +#define TANAMES +#endif + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/mbuf.h> +#include <sys/socket.h> +#include <sys/socketvar.h> +#include <sys/protosw.h> +#include <sys/errno.h> + +#include <net/route.h> +#include <net/if.h> + +#include <netinet/in.h> +#include <netinet/in_systm.h> +#include <netinet/ip.h> +#include <netinet/in_pcb.h> +#include <netinet/ip_var.h> +#include <netinet/tcp.h> +#include <netinet/tcp_fsm.h> +#include <netinet/tcp_seq.h> +#include <netinet/tcp_timer.h> +#include <netinet/tcp_var.h> +#include <netinet/tcpip.h> +#include <netinet/tcp_debug.h> + +#ifdef TCPDEBUG +int tcpconsdebug = 0; +#endif +/* + * Tcp debug routines + */ +void +tcp_trace(act, ostate, tp, ti, req) + short act, ostate; + struct tcpcb *tp; + struct tcpiphdr *ti; + int req; +{ + tcp_seq seq, ack; + int len, flags; + struct tcp_debug *td = &tcp_debug[tcp_debx++]; + + 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 (ti) + td->td_ti = *ti; + else + bzero((caddr_t)&td->td_ti, sizeof (*ti)); + td->td_req = req; +#ifdef TCPDEBUG + if (tcpconsdebug == 0) + return; + if (tp) + printf("%x %s:", tp, tcpstates[ostate]); + else + printf("???????? "); + printf("%s ", tanames[act]); + switch (act) { + + case TA_INPUT: + case TA_OUTPUT: + case TA_DROP: + if (ti == 0) + break; + seq = ti->ti_seq; + ack = ti->ti_ack; + len = ti->ti_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, ti->ti_urp); + flags = ti->ti_flags; + if (flags) { +#ifndef lint + char *cp = "<"; +#define pf(f) { if (ti->ti_flags&TH_/**/f) { printf("%s%s", cp, "f"); cp = ","; } } + pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG); +#endif + 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) (%x,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n", + tp->rcv_nxt, tp->rcv_wnd, tp->rcv_up, tp->snd_una, tp->snd_nxt, + tp->snd_max); + printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n", + tp->snd_wl1, tp->snd_wl2, tp->snd_wnd); +#endif /* TCPDEBUG */ +} |