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-rw-r--r--c/src/lib/libnetworking/netinet/tcp_debug.c170
1 files changed, 170 insertions, 0 deletions
diff --git a/c/src/lib/libnetworking/netinet/tcp_debug.c b/c/src/lib/libnetworking/netinet/tcp_debug.c
new file mode 100644
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+++ b/c/src/lib/libnetworking/netinet/tcp_debug.c
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+/*
+ * 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
+ * $Id$
+ */
+
+#include "opt_tcpdebug.h"
+
+#ifdef TCPDEBUG
+/* load symbolic names */
+#define PRUREQUESTS
+#define TCPSTATES
+#define TCPTIMERS
+#define TANAMES
+#endif
+
+#include <sys/param.h>
+#include <sys/queue.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
+static int tcpconsdebug = 0;
+#endif
+
+static struct tcp_debug tcp_debug[TCP_NDEBUG];
+static int tcp_debx;
+
+/*
+ * 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("%p %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) {
+ 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);
+ 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 */
+}