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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"
37 #error The option TCPDEBUG requires option INET.
40 /* load symbolic names */
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/protosw.h>
49 #include <sys/socket.h>
51 #include <net/netisr.h>
52 #include <net/netmsg.h>
54 #include <netinet/in.h>
55 #include <netinet/in_systm.h>
56 #include <netinet/ip.h>
58 #include <netinet/ip6.h>
60 #include <netinet/ip_var.h>
61 #include <netinet/tcp.h>
62 #include <netinet/tcp_fsm.h>
63 #include <netinet/tcp_timer.h>
64 #include <netinet/tcp_var.h>
65 #include <netinet/tcpip.h>
66 #include <netinet/tcp_debug.h>
68 static int tcpconsdebug = 0;
69 static struct tcp_debug tcp_debug[TCP_NDEBUG];
76 tcp_trace(short act, short ostate, struct tcpcb *tp, void *ipgen,
77 struct tcphdr *th, int req)
84 struct tcp_debug *td = &tcp_debug[tcp_debx++];
87 isipv6 = (ipgen != NULL && ((struct ip *)ipgen)->ip_v == 6) ? 1 : 0;
91 (isipv6 != 0) ? AF_INET6 :
94 if (tcp_debx == TCP_NDEBUG)
96 td->td_time = iptime();
98 td->td_ostate = ostate;
99 td->td_tcb = (caddr_t)tp;
103 bzero(&td->td_cb, sizeof *tp);
105 switch (td->td_family) {
107 bcopy(ipgen, &td->td_ti.ti_i, sizeof(td->td_ti.ti_i));
108 bzero(td->td_ip6buf, sizeof td->td_ip6buf);
112 bcopy(ipgen, td->td_ip6buf, sizeof td->td_ip6buf);
113 bzero(&td->td_ti.ti_i, sizeof td->td_ti.ti_i);
117 bzero(td->td_ip6buf, sizeof td->td_ip6buf);
118 bzero(&td->td_ti.ti_i, sizeof td->td_ti.ti_i);
122 bzero(&td->td_ti.ti_i, sizeof td->td_ti.ti_i);
123 bzero(td->td_ip6buf, sizeof td->td_ip6buf);
126 switch (td->td_family) {
128 td->td_ti.ti_t = *th;
129 bzero(&td->td_ti6.th, sizeof td->td_ti6.th);
134 bzero(&td->td_ti.ti_t, sizeof td->td_ti.ti_t);
138 bzero(&td->td_ti.ti_t, sizeof td->td_ti.ti_t);
139 bzero(&td->td_ti6.th, sizeof td->td_ti6.th);
143 bzero(&td->td_ti.ti_t, sizeof td->td_ti.ti_t);
144 bzero(&td->td_ti6.th, sizeof td->td_ti6.th);
147 if (tcpconsdebug == 0)
150 kprintf("%p %s:", tp, tcpstates[ostate]);
152 kprintf("???????? ");
153 kprintf("%s ", tanames[act]);
159 if (ipgen == NULL || th == NULL)
165 isipv6 ? ((struct ip6_hdr *)ipgen)->ip6_plen :
167 ntohs(((struct ip *)ipgen)->ip_len);
168 if (act == TA_OUTPUT) {
171 len = ntohs((u_short)len);
173 if (act == TA_OUTPUT)
174 len -= sizeof(struct tcphdr);
176 kprintf("[%x..%x)", seq, seq+len);
179 kprintf("@%x, urp=%x", ack, th->th_urp);
180 flags = th->th_flags;
184 if (th->th_flags & TH_##f) { \
185 kprintf("%s%s", cp, #f); \
189 pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG);
195 kprintf("%s", prurequests[req&0xff]);
196 if ((req & 0xff) == PRU_SLOWTIMO)
197 kprintf("<%s>", tcptimers[req>>8]);
201 kprintf(" -> %s", tcpstates[tp->t_state]);
202 /* print out internal state of tp !?! */
207 "\trcv_(nxt,wnd,up) (%lx,%lx,%lx) snd_(una,nxt,max) (%lx,%lx,%lx)\n",
208 (u_long)tp->rcv_nxt, tp->rcv_wnd, (u_long)tp->rcv_up,
209 (u_long)tp->snd_una, (u_long)tp->snd_nxt, (u_long)tp->snd_max);
210 kprintf("\tsnd_(wl1,wl2,wnd) (%lx,%lx,%lx)\n",
211 (u_long)tp->snd_wl1, (u_long)tp->snd_wl2, tp->snd_wnd);