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3 * The Regents of the University of California. All rights reserved.
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6 * modification, are permitted provided that the following conditions
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14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
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33 * @(#)tcp_debug.c 8.1 (Berkeley) 6/10/93
34 * $FreeBSD: src/sys/netinet/tcp_debug.c,v 1.16.2.1 2000/07/15 07:14:31 kris Exp $
35 * $DragonFly: src/sys/netinet/tcp_debug.c,v 1.6 2006/12/22 23:57:52 swildner Exp $
39 #include "opt_inet6.h"
40 #include "opt_tcpdebug.h"
43 #error The option TCPDEBUG requires option INET.
47 /* load symbolic names */
54 #include <sys/param.h>
55 #include <sys/systm.h>
56 #include <sys/protosw.h>
57 #include <sys/socket.h>
59 #include <netinet/in.h>
60 #include <netinet/in_systm.h>
61 #include <netinet/ip.h>
63 #include <netinet/ip6.h>
65 #include <netinet/ip_var.h>
66 #include <netinet/tcp.h>
67 #include <netinet/tcp_fsm.h>
68 #include <netinet/tcp_timer.h>
69 #include <netinet/tcp_var.h>
70 #include <netinet/tcpip.h>
71 #include <netinet/tcp_debug.h>
74 static int tcpconsdebug = 0;
77 static struct tcp_debug tcp_debug[TCP_NDEBUG];
84 tcp_trace(short act, short ostate, struct tcpcb *tp, void *ipgen,
85 struct tcphdr *th, int req)
92 struct tcp_debug *td = &tcp_debug[tcp_debx++];
95 isipv6 = (ipgen != NULL && ((struct ip *)ipgen)->ip_v == 6) ? 1 : 0;
99 (isipv6 != 0) ? AF_INET6 :
102 if (tcp_debx == TCP_NDEBUG)
104 td->td_time = iptime();
106 td->td_ostate = ostate;
107 td->td_tcb = (caddr_t)tp;
111 bzero(&td->td_cb, sizeof *tp);
113 switch (td->td_family) {
115 bcopy(ipgen, &td->td_ti.ti_i, sizeof(td->td_ti.ti_i));
116 bzero(td->td_ip6buf, sizeof td->td_ip6buf);
120 bcopy(ipgen, td->td_ip6buf, sizeof td->td_ip6buf);
121 bzero(&td->td_ti.ti_i, sizeof td->td_ti.ti_i);
125 bzero(td->td_ip6buf, sizeof td->td_ip6buf);
126 bzero(&td->td_ti.ti_i, sizeof td->td_ti.ti_i);
130 bzero(&td->td_ti.ti_i, sizeof td->td_ti.ti_i);
131 bzero(td->td_ip6buf, sizeof td->td_ip6buf);
134 switch (td->td_family) {
136 td->td_ti.ti_t = *th;
137 bzero(&td->td_ti6.th, sizeof td->td_ti6.th);
142 bzero(&td->td_ti.ti_t, sizeof td->td_ti.ti_t);
146 bzero(&td->td_ti.ti_t, sizeof td->td_ti.ti_t);
147 bzero(&td->td_ti6.th, sizeof td->td_ti6.th);
151 bzero(&td->td_ti.ti_t, sizeof td->td_ti.ti_t);
152 bzero(&td->td_ti6.th, sizeof td->td_ti6.th);
156 if (tcpconsdebug == 0)
159 kprintf("%p %s:", tp, tcpstates[ostate]);
161 kprintf("???????? ");
162 kprintf("%s ", tanames[act]);
168 if (ipgen == NULL || th == NULL)
174 isipv6 ? ((struct ip6_hdr *)ipgen)->ip6_plen :
176 ((struct ip *)ipgen)->ip_len;
177 if (act == TA_OUTPUT) {
180 len = ntohs((u_short)len);
182 if (act == TA_OUTPUT)
183 len -= sizeof(struct tcphdr);
185 kprintf("[%x..%x)", seq, seq+len);
188 kprintf("@%x, urp=%x", ack, th->th_urp);
189 flags = th->th_flags;
193 if (th->th_flags & TH_##f) { \
194 kprintf("%s%s", cp, #f); \
198 pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG);
204 kprintf("%s", prurequests[req&0xff]);
205 if ((req & 0xff) == PRU_SLOWTIMO)
206 kprintf("<%s>", tcptimers[req>>8]);
210 kprintf(" -> %s", tcpstates[tp->t_state]);
211 /* print out internal state of tp !?! */
216 "\trcv_(nxt,wnd,up) (%lx,%lx,%lx) snd_(una,nxt,max) (%lx,%lx,%lx)\n",
217 (u_long)tp->rcv_nxt, tp->rcv_wnd, (u_long)tp->rcv_up,
218 (u_long)tp->snd_una, (u_long)tp->snd_nxt, (u_long)tp->snd_max);
219 kprintf("\tsnd_(wl1,wl2,wnd) (%lx,%lx,%lx)\n",
220 (u_long)tp->snd_wl1, (u_long)tp->snd_wl2, tp->snd_wnd);
221 #endif /* TCPDEBUG */