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6 * modification, are permitted provided that the following conditions
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29 * @(#)tcp_debug.c 8.1 (Berkeley) 6/10/93
30 * $FreeBSD: src/sys/netinet/tcp_debug.c,v 1.16.2.1 2000/07/15 07:14:31 kris Exp $
34 #include "opt_inet6.h"
35 #include "opt_tcpdebug.h"
38 #error The option TCPDEBUG requires option INET.
42 /* load symbolic names */
49 #include <sys/param.h>
50 #include <sys/systm.h>
51 #include <sys/protosw.h>
52 #include <sys/socket.h>
54 #include <net/netmsg.h>
56 #include <netinet/in.h>
57 #include <netinet/in_systm.h>
58 #include <netinet/ip.h>
60 #include <netinet/ip6.h>
62 #include <netinet/ip_var.h>
63 #include <netinet/tcp.h>
64 #include <netinet/tcp_fsm.h>
65 #include <netinet/tcp_timer.h>
66 #include <netinet/tcp_var.h>
67 #include <netinet/tcpip.h>
68 #include <netinet/tcp_debug.h>
71 static int tcpconsdebug = 0;
74 static struct tcp_debug tcp_debug[TCP_NDEBUG];
81 tcp_trace(short act, short ostate, struct tcpcb *tp, void *ipgen,
82 struct tcphdr *th, int req)
89 struct tcp_debug *td = &tcp_debug[tcp_debx++];
92 isipv6 = (ipgen != NULL && ((struct ip *)ipgen)->ip_v == 6) ? 1 : 0;
96 (isipv6 != 0) ? AF_INET6 :
99 if (tcp_debx == TCP_NDEBUG)
101 td->td_time = iptime();
103 td->td_ostate = ostate;
104 td->td_tcb = (caddr_t)tp;
108 bzero(&td->td_cb, sizeof *tp);
110 switch (td->td_family) {
112 bcopy(ipgen, &td->td_ti.ti_i, sizeof(td->td_ti.ti_i));
113 bzero(td->td_ip6buf, sizeof td->td_ip6buf);
117 bcopy(ipgen, td->td_ip6buf, sizeof td->td_ip6buf);
118 bzero(&td->td_ti.ti_i, sizeof td->td_ti.ti_i);
122 bzero(td->td_ip6buf, sizeof td->td_ip6buf);
123 bzero(&td->td_ti.ti_i, sizeof td->td_ti.ti_i);
127 bzero(&td->td_ti.ti_i, sizeof td->td_ti.ti_i);
128 bzero(td->td_ip6buf, sizeof td->td_ip6buf);
131 switch (td->td_family) {
133 td->td_ti.ti_t = *th;
134 bzero(&td->td_ti6.th, sizeof td->td_ti6.th);
139 bzero(&td->td_ti.ti_t, sizeof td->td_ti.ti_t);
143 bzero(&td->td_ti.ti_t, sizeof td->td_ti.ti_t);
144 bzero(&td->td_ti6.th, sizeof td->td_ti6.th);
148 bzero(&td->td_ti.ti_t, sizeof td->td_ti.ti_t);
149 bzero(&td->td_ti6.th, sizeof td->td_ti6.th);
153 if (tcpconsdebug == 0)
156 kprintf("%p %s:", tp, tcpstates[ostate]);
158 kprintf("???????? ");
159 kprintf("%s ", tanames[act]);
165 if (ipgen == NULL || th == NULL)
171 isipv6 ? ((struct ip6_hdr *)ipgen)->ip6_plen :
173 ((struct ip *)ipgen)->ip_len;
174 if (act == TA_OUTPUT) {
177 len = ntohs((u_short)len);
179 if (act == TA_OUTPUT)
180 len -= sizeof(struct tcphdr);
182 kprintf("[%x..%x)", seq, seq+len);
185 kprintf("@%x, urp=%x", ack, th->th_urp);
186 flags = th->th_flags;
190 if (th->th_flags & TH_##f) { \
191 kprintf("%s%s", cp, #f); \
195 pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG);
201 kprintf("%s", prurequests[req&0xff]);
202 if ((req & 0xff) == PRU_SLOWTIMO)
203 kprintf("<%s>", tcptimers[req>>8]);
207 kprintf(" -> %s", tcpstates[tp->t_state]);
208 /* print out internal state of tp !?! */
213 "\trcv_(nxt,wnd,up) (%lx,%lx,%lx) snd_(una,nxt,max) (%lx,%lx,%lx)\n",
214 (u_long)tp->rcv_nxt, tp->rcv_wnd, (u_long)tp->rcv_up,
215 (u_long)tp->snd_una, (u_long)tp->snd_nxt, (u_long)tp->snd_max);
216 kprintf("\tsnd_(wl1,wl2,wnd) (%lx,%lx,%lx)\n",
217 (u_long)tp->snd_wl1, (u_long)tp->snd_wl2, tp->snd_wnd);
218 #endif /* TCPDEBUG */