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Annotation of 43BSD/sys/netinet/tcp_debug.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1982, 1986 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  *
        !             6:  *     @(#)tcp_debug.c 7.1 (Berkeley) 6/5/86
        !             7:  */
        !             8: 
        !             9: #include "param.h"
        !            10: #include "systm.h"
        !            11: #include "mbuf.h"
        !            12: #include "socket.h"
        !            13: #include "socketvar.h"
        !            14: #define PRUREQUESTS
        !            15: #include "protosw.h"
        !            16: #include "errno.h"
        !            17: 
        !            18: #include "../net/route.h"
        !            19: #include "../net/if.h"
        !            20: 
        !            21: #include "in.h"
        !            22: #include "in_pcb.h"
        !            23: #include "in_systm.h"
        !            24: #include "ip.h"
        !            25: #include "ip_var.h"
        !            26: #include "tcp.h"
        !            27: #define TCPSTATES
        !            28: #include "tcp_fsm.h"
        !            29: #include "tcp_seq.h"
        !            30: #define        TCPTIMERS
        !            31: #include "tcp_timer.h"
        !            32: #include "tcp_var.h"
        !            33: #include "tcpip.h"
        !            34: #define        TANAMES
        !            35: #include "tcp_debug.h"
        !            36: 
        !            37: int    tcpconsdebug = 0;
        !            38: /*
        !            39:  * Tcp debug routines
        !            40:  */
        !            41: tcp_trace(act, ostate, tp, ti, req)
        !            42:        short act, ostate;
        !            43:        struct tcpcb *tp;
        !            44:        struct tcpiphdr *ti;
        !            45:        int req;
        !            46: {
        !            47:        tcp_seq seq, ack;
        !            48:        int len, flags;
        !            49:        struct tcp_debug *td = &tcp_debug[tcp_debx++];
        !            50: 
        !            51:        if (tcp_debx == TCP_NDEBUG)
        !            52:                tcp_debx = 0;
        !            53:        td->td_time = iptime();
        !            54:        td->td_act = act;
        !            55:        td->td_ostate = ostate;
        !            56:        td->td_tcb = (caddr_t)tp;
        !            57:        if (tp)
        !            58:                td->td_cb = *tp;
        !            59:        else
        !            60:                bzero((caddr_t)&td->td_cb, sizeof (*tp));
        !            61:        if (ti)
        !            62:                td->td_ti = *ti;
        !            63:        else
        !            64:                bzero((caddr_t)&td->td_ti, sizeof (*ti));
        !            65:        td->td_req = req;
        !            66:        if (tcpconsdebug == 0)
        !            67:                return;
        !            68:        if (tp)
        !            69:                printf("%x %s:", tp, tcpstates[ostate]);
        !            70:        else
        !            71:                printf("???????? ");
        !            72:        printf("%s ", tanames[act]);
        !            73:        switch (act) {
        !            74: 
        !            75:        case TA_INPUT:
        !            76:        case TA_OUTPUT:
        !            77:        case TA_DROP:
        !            78:                if (ti == 0)
        !            79:                        break;
        !            80:                seq = ti->ti_seq;
        !            81:                ack = ti->ti_ack;
        !            82:                len = ti->ti_len;
        !            83:                if (act == TA_OUTPUT) {
        !            84:                        seq = ntohl(seq);
        !            85:                        ack = ntohl(ack);
        !            86:                        len = ntohs((u_short)len);
        !            87:                }
        !            88:                if (act == TA_OUTPUT)
        !            89:                        len -= sizeof (struct tcphdr);
        !            90:                if (len)
        !            91:                        printf("[%x..%x)", seq, seq+len);
        !            92:                else
        !            93:                        printf("%x", seq);
        !            94:                printf("@%x, urp=%x", ack, ti->ti_urp);
        !            95:                flags = ti->ti_flags;
        !            96:                if (flags) {
        !            97: #ifndef lint
        !            98:                        char *cp = "<";
        !            99: #define pf(f) { if (ti->ti_flags&TH_/**/f) { printf("%s%s", cp, "f"); cp = ","; } }
        !           100:                        pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG);
        !           101: #endif
        !           102:                        printf(">");
        !           103:                }
        !           104:                break;
        !           105: 
        !           106:        case TA_USER:
        !           107:                printf("%s", prurequests[req&0xff]);
        !           108:                if ((req & 0xff) == PRU_SLOWTIMO)
        !           109:                        printf("<%s>", tcptimers[req>>8]);
        !           110:                break;
        !           111:        }
        !           112:        if (tp)
        !           113:                printf(" -> %s", tcpstates[tp->t_state]);
        !           114:        /* print out internal state of tp !?! */
        !           115:        printf("\n");
        !           116:        if (tp == 0)
        !           117:                return;
        !           118:        printf("\trcv_(nxt,wnd,up) (%x,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n",
        !           119:            tp->rcv_nxt, tp->rcv_wnd, tp->rcv_up, tp->snd_una, tp->snd_nxt,
        !           120:            tp->snd_max);
        !           121:        printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n",
        !           122:            tp->snd_wl1, tp->snd_wl2, tp->snd_wnd);
        !           123: }

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