tcp_debug.c
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上传用户:tjbfgc
上传日期:2013-03-31
资源大小:140k
文件大小:5k
源码类别:
网络编程
开发平台:
C/C++
- /*
- * 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 */
- }