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Annotation of 43BSDTahoe/sys/netinet/tcp_debug.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1982, 1986 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms are permitted
                      6:  * provided that the above copyright notice and this paragraph are
                      7:  * duplicated in all such forms and that any documentation,
                      8:  * advertising materials, and other materials related to such
                      9:  * distribution and use acknowledge that the software was developed
                     10:  * by the University of California, Berkeley.  The name of the
                     11:  * University may not be used to endorse or promote products derived
                     12:  * from this software without specific prior written permission.
                     13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     16:  *
                     17:  *     @(#)tcp_debug.c 7.3 (Berkeley) 6/29/88
                     18:  */
                     19: 
                     20: #include "param.h"
                     21: #include "systm.h"
                     22: #include "mbuf.h"
                     23: #include "socket.h"
                     24: #include "socketvar.h"
                     25: #define PRUREQUESTS
                     26: #include "protosw.h"
                     27: #include "errno.h"
                     28: 
                     29: #include "../net/route.h"
                     30: #include "../net/if.h"
                     31: 
                     32: #include "in.h"
                     33: #include "in_pcb.h"
                     34: #include "in_systm.h"
                     35: #include "ip.h"
                     36: #include "ip_var.h"
                     37: #include "tcp.h"
                     38: #define TCPSTATES
                     39: #include "tcp_fsm.h"
                     40: #include "tcp_seq.h"
                     41: #define        TCPTIMERS
                     42: #include "tcp_timer.h"
                     43: #include "tcp_var.h"
                     44: #include "tcpip.h"
                     45: #define        TANAMES
                     46: #include "tcp_debug.h"
                     47: 
                     48: int    tcpconsdebug = 0;
                     49: /*
                     50:  * Tcp debug routines
                     51:  */
                     52: tcp_trace(act, ostate, tp, ti, req)
                     53:        short act, ostate;
                     54:        struct tcpcb *tp;
                     55:        struct tcpiphdr *ti;
                     56:        int req;
                     57: {
                     58:        tcp_seq seq, ack;
                     59:        int len, flags;
                     60:        struct tcp_debug *td = &tcp_debug[tcp_debx++];
                     61: 
                     62:        if (tcp_debx == TCP_NDEBUG)
                     63:                tcp_debx = 0;
                     64:        td->td_time = iptime();
                     65:        td->td_act = act;
                     66:        td->td_ostate = ostate;
                     67:        td->td_tcb = (caddr_t)tp;
                     68:        if (tp)
                     69:                td->td_cb = *tp;
                     70:        else
                     71:                bzero((caddr_t)&td->td_cb, sizeof (*tp));
                     72:        if (ti)
                     73:                td->td_ti = *ti;
                     74:        else
                     75:                bzero((caddr_t)&td->td_ti, sizeof (*ti));
                     76:        td->td_req = req;
                     77:        if (tcpconsdebug == 0)
                     78:                return;
                     79:        if (tp)
                     80:                printf("%x %s:", tp, tcpstates[ostate]);
                     81:        else
                     82:                printf("???????? ");
                     83:        printf("%s ", tanames[act]);
                     84:        switch (act) {
                     85: 
                     86:        case TA_INPUT:
                     87:        case TA_OUTPUT:
                     88:        case TA_DROP:
                     89:                if (ti == 0)
                     90:                        break;
                     91:                seq = ti->ti_seq;
                     92:                ack = ti->ti_ack;
                     93:                len = ti->ti_len;
                     94:                if (act == TA_OUTPUT) {
                     95:                        seq = ntohl(seq);
                     96:                        ack = ntohl(ack);
                     97:                        len = ntohs((u_short)len);
                     98:                }
                     99:                if (act == TA_OUTPUT)
                    100:                        len -= sizeof (struct tcphdr);
                    101:                if (len)
                    102:                        printf("[%x..%x)", seq, seq+len);
                    103:                else
                    104:                        printf("%x", seq);
                    105:                printf("@%x, urp=%x", ack, ti->ti_urp);
                    106:                flags = ti->ti_flags;
                    107:                if (flags) {
                    108: #ifndef lint
                    109:                        char *cp = "<";
                    110: #define pf(f) { if (ti->ti_flags&TH_/**/f) { printf("%s%s", cp, "f"); cp = ","; } }
                    111:                        pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG);
                    112: #endif
                    113:                        printf(">");
                    114:                }
                    115:                break;
                    116: 
                    117:        case TA_USER:
                    118:                printf("%s", prurequests[req&0xff]);
                    119:                if ((req & 0xff) == PRU_SLOWTIMO)
                    120:                        printf("<%s>", tcptimers[req>>8]);
                    121:                break;
                    122:        }
                    123:        if (tp)
                    124:                printf(" -> %s", tcpstates[tp->t_state]);
                    125:        /* print out internal state of tp !?! */
                    126:        printf("\n");
                    127:        if (tp == 0)
                    128:                return;
                    129:        printf("\trcv_(nxt,wnd,up) (%x,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n",
                    130:            tp->rcv_nxt, tp->rcv_wnd, tp->rcv_up, tp->snd_una, tp->snd_nxt,
                    131:            tp->snd_max);
                    132:        printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n",
                    133:            tp->snd_wl1, tp->snd_wl2, tp->snd_wnd);
                    134: }

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