#ifndef INET
#error The option TCPDEBUG requires option INET.
#endif
#if TCPDEBUG
#define PRUREQUESTS
#define TCPSTATES
#define TCPTIMERS
#define TANAMES
#endif
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/protosw.h>
#include <sys/sysctl.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#if INET6
#include <netinet/ip6.h>
#endif
#include <netinet/ip_var.h>
#include <netinet/tcp.h>
#include <netinet/tcp_fsm.h>
#include <netinet/tcp_timer.h>
#include <netinet/tcp_var.h>
#include <netinet/tcpip.h>
#include <netinet/tcp_debug.h>
#if TCPDEBUG
static int tcpconsdebug = 0;
#endif
static struct tcp_debug tcp_debug[TCP_NDEBUG];
static int tcp_debx;
void
tcp_trace(act, ostate, tp, ipgen, th, req)
short act, ostate;
struct tcpcb *tp;
void *ipgen;
struct tcphdr *th;
int req;
{
#if INET6
int isipv6;
#endif
tcp_seq seq, ack;
int len, flags;
struct tcp_debug *td = &tcp_debug[tcp_debx++];
#if INET6
isipv6 = (ipgen != NULL && ((struct ip *)ipgen)->ip_v == 6) ? 1 : 0;
#endif
td->td_family =
#if INET6
(isipv6 != 0) ? AF_INET6 :
#endif
AF_INET;
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 (ipgen) {
switch (td->td_family) {
case AF_INET:
bcopy((caddr_t)ipgen, (caddr_t)&td->td_ti.ti_i,
sizeof(td->td_ti.ti_i));
bzero((caddr_t)td->td_ip6buf, sizeof(td->td_ip6buf));
break;
#if INET6
case AF_INET6:
bcopy((caddr_t)ipgen, (caddr_t)td->td_ip6buf,
sizeof(td->td_ip6buf));
bzero((caddr_t)&td->td_ti.ti_i,
sizeof(td->td_ti.ti_i));
break;
#endif
default:
bzero((caddr_t)td->td_ip6buf, sizeof(td->td_ip6buf));
bzero((caddr_t)&td->td_ti.ti_i,
sizeof(td->td_ti.ti_i));
break;
}
} else {
bzero((caddr_t)&td->td_ti.ti_i, sizeof(td->td_ti.ti_i));
bzero((caddr_t)td->td_ip6buf, sizeof(td->td_ip6buf));
}
if (th) {
switch (td->td_family) {
case AF_INET:
td->td_ti.ti_t = *th;
bzero((caddr_t)&td->td_ti6.th, sizeof(td->td_ti6.th));
break;
#if INET6
case AF_INET6:
td->td_ti6.th = *th;
bzero((caddr_t)&td->td_ti.ti_t,
sizeof(td->td_ti.ti_t));
break;
#endif
default:
bzero((caddr_t)&td->td_ti.ti_t,
sizeof(td->td_ti.ti_t));
bzero((caddr_t)&td->td_ti6.th, sizeof(td->td_ti6.th));
break;
}
} else {
bzero((caddr_t)&td->td_ti.ti_t, sizeof(td->td_ti.ti_t));
bzero((caddr_t)&td->td_ti6.th, sizeof(td->td_ti6.th));
}
td->td_req = req;
#if TCPDEBUG
if (tcpconsdebug == 0)
return;
if (tp)
printf("%p %s:", tp, tcpstates[ostate]);
else
printf("???????? ");
printf("%s ", tanames[act]);
switch (act) {
case TA_INPUT:
case TA_OUTPUT:
case TA_DROP:
if (ipgen == NULL || th == NULL)
break;
seq = th->th_seq;
ack = th->th_ack;
len =
#if INET6
isipv6 ? ((struct ip6_hdr *)ipgen)->ip6_plen :
#endif
((struct ip *)ipgen)->ip_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, th->th_urp);
flags = th->th_flags;
if (flags) {
char *cp = "<";
#define pf(f) { \
if (th->th_flags & TH_##f) { \
printf("%s%s", cp, #f); \
cp = ","; \
} \
}
pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG);
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]);
printf("\n");
if (tp == 0)
return;
printf(
"\trcv_(nxt,wnd,up) (%lx,%lx,%lx) snd_(una,nxt,max) (%lx,%lx,%lx)\n",
(u_long)tp->rcv_nxt, tp->rcv_wnd, (u_long)tp->rcv_up,
(u_long)tp->snd_una, (u_long)tp->snd_nxt, (u_long)tp->snd_max);
printf("\tsnd_(wl1,wl2,wnd) (%lx,%lx,%lx)\n",
(u_long)tp->snd_wl1, (u_long)tp->snd_wl2, tp->snd_wnd);
#endif
}