diff options
Diffstat (limited to 'sys/netccitt/llc_subr.c')
| -rw-r--r-- | sys/netccitt/llc_subr.c | 2468 |
1 files changed, 1326 insertions, 1142 deletions
diff --git a/sys/netccitt/llc_subr.c b/sys/netccitt/llc_subr.c index b5e294cbabb..3445c303c10 100644 --- a/sys/netccitt/llc_subr.c +++ b/sys/netccitt/llc_subr.c @@ -1,4 +1,5 @@ -/* $NetBSD: llc_subr.c,v 1.3 1995/06/13 05:38:51 mycroft Exp $ */ +/* $OpenBSD: llc_subr.c,v 1.2 1996/03/04 07:36:33 niklas Exp $ */ +/* $NetBSD: llc_subr.c,v 1.4 1996/02/13 22:04:51 christos Exp $ */ /* * Copyright (C) Dirk Husemann, Computer Science Department IV, @@ -63,8 +64,10 @@ /* * Frame names for diagnostic messages */ -char *frame_names[] = { "INFO", "RR", "RNR", "REJ", "DM", "SABME", "DISC", - "UA", "FRMR", "UI", "XID", "TEST", "ILLEGAL", "TIMER", "N2xT1"}; +char *frame_names[] = { + "INFO", "RR", "RNR", "REJ", "DM", "SABME", "DISC", + "UA", "FRMR", "UI", "XID", "TEST", "ILLEGAL", "TIMER", "N2xT1" +}; /* @@ -76,220 +79,244 @@ int llc_tracelevel = LLCTR_URGENT; * Values for accessing various bitfields */ struct bitslice llc_bitslice[] = { -/* mask, shift value */ - { 0x1, 0x0 }, - { 0xfe, 0x1 }, - { 0x3, 0x0 }, - { 0xc, 0x2 }, - { 0x10, 0x4 }, - { 0xe0, 0x5 }, - { 0x1f, 0x0 } + /* mask, shift value */ + {0x1, 0x0}, + {0xfe, 0x1}, + {0x3, 0x0}, + {0xc, 0x2}, + {0x10, 0x4}, + {0xe0, 0x5}, + {0x1f, 0x0} }; /* - * We keep the link control blocks on a doubly linked list - - * primarily for checking in llc_time() + * We keep the link control blocks on a doubly linked list - + * primarily for checking in llc_time() */ - -struct llccb_q llccb_q = { &llccb_q, &llccb_q }; +struct llccb_q llccb_q = {&llccb_q, &llccb_q}; /* * Flag for signalling wether route tree for AF_LINK has been * initialized yet. */ -int af_link_rts_init_done = 0; +int af_link_rts_init_done = 0; /* * Functions dealing with struct sockaddr_dl */ /* Compare sdl_a w/ sdl_b */ - -sdl_cmp(struct sockaddr_dl *sdl_a, struct sockaddr_dl *sdl_b) +int +sdl_cmp(sdl_a, sdl_b) + struct sockaddr_dl *sdl_a; + struct sockaddr_dl *sdl_b; { if (LLADDRLEN(sdl_a) != LLADDRLEN(sdl_b)) - return(1); - return(bcmp((caddr_t) sdl_a->sdl_data, (caddr_t) sdl_b->sdl_data, - LLADDRLEN(sdl_a))); + return (1); + return (bcmp((caddr_t) sdl_a->sdl_data, (caddr_t) sdl_b->sdl_data, + LLADDRLEN(sdl_a))); } /* Copy sdl_f to sdl_t */ - -sdl_copy(struct sockaddr_dl *sdl_f, struct sockaddr_dl *sdl_t) +void +sdl_copy(sdl_f, sdl_t) + struct sockaddr_dl *sdl_f; + struct sockaddr_dl *sdl_t; { bcopy((caddr_t) sdl_f, (caddr_t) sdl_t, sdl_f->sdl_len); } /* Swap sdl_a w/ sdl_b */ - -sdl_swapaddr(struct sockaddr_dl *sdl_a, struct sockaddr_dl *sdl_b) +void +sdl_swapaddr(sdl_a, sdl_b) + struct sockaddr_dl *sdl_a; + struct sockaddr_dl *sdl_b; { struct sockaddr_dl sdl_tmp; - sdl_copy(sdl_a, &sdl_tmp); - sdl_copy(sdl_b, sdl_a); + sdl_copy(sdl_a, &sdl_tmp); + sdl_copy(sdl_b, sdl_a); sdl_copy(&sdl_tmp, sdl_b); } /* Fetch the sdl of the associated if */ - -struct sockaddr_dl * -sdl_getaddrif(struct ifnet *ifp) +struct sockaddr_dl * +sdl_getaddrif(ifp) + struct ifnet *ifp; { register struct ifaddr *ifa; for (ifa = ifp->if_addrlist.tqh_first; ifa != 0; - ifa = ifa->ifa_list.tqe_next) + ifa = ifa->ifa_list.tqe_next) if (ifa->ifa_addr->sa_family == AF_LINK) - return((struct sockaddr_dl *)(ifa->ifa_addr)); + return ((struct sockaddr_dl *) (ifa->ifa_addr)); - return((struct sockaddr_dl *)0); + return ((struct sockaddr_dl *) 0); } /* Check addr of interface with the one given */ - -sdl_checkaddrif(struct ifnet *ifp, struct sockaddr_dl *sdl_c) +int +sdl_checkaddrif(ifp, sdl_c) + struct ifnet *ifp; + struct sockaddr_dl *sdl_c; { register struct ifaddr *ifa; for (ifa = ifp->if_addrlist.tqh_first; ifa != 0; - ifa = ifa->ifa_list.tqe_next) - if (ifa->ifa_addr->sa_family == AF_LINK && - !sdl_cmp((struct sockaddr_dl *)(ifa->ifa_addr), sdl_c)) - return(1); - - return(0); + ifa = ifa->ifa_list.tqe_next) + if (ifa->ifa_addr->sa_family == AF_LINK && + !sdl_cmp((struct sockaddr_dl *) (ifa->ifa_addr), sdl_c)) + return (1); + + return (0); } /* Build an sdl from MAC addr, DLSAP addr, and interface */ - -sdl_setaddrif(struct ifnet *ifp, u_char *mac_addr, u_char dlsap_addr, - u_char mac_len, struct sockaddr_dl *sdl_to) +int +sdl_setaddrif(ifp, mac_addr, dlsap_addr, mac_len, sdl_to) + struct ifnet *ifp; + u_char *mac_addr; + u_char dlsap_addr; + u_char mac_len; + struct sockaddr_dl *sdl_to; { register struct sockaddr_dl *sdl_tmp; - if ((sdl_tmp = sdl_getaddrif(ifp)) ) { - sdl_copy(sdl_tmp, sdl_to); + if ((sdl_tmp = sdl_getaddrif(ifp))) { + sdl_copy(sdl_tmp, sdl_to); bcopy((caddr_t) mac_addr, (caddr_t) LLADDR(sdl_to), mac_len); - *(LLADDR(sdl_to)+mac_len) = dlsap_addr; - sdl_to->sdl_alen = mac_len+1; - return(1); - } else return(0); + *(LLADDR(sdl_to) + mac_len) = dlsap_addr; + sdl_to->sdl_alen = mac_len + 1; + return (1); + } else + return (0); } /* Fill out the sdl header aggregate */ - -sdl_sethdrif(struct ifnet *ifp, u_char *mac_src, u_char dlsap_src, u_char *mac_dst, - u_char dlsap_dst, u_char mac_len, struct sdl_hdr *sdlhdr_to) +int +sdl_sethdrif(ifp, mac_src, dlsap_src, mac_dst, dlsap_dst, mac_len, sdlhdr_to) + struct ifnet *ifp; + u_char *mac_src; + u_char dlsap_src; + u_char *mac_dst; + u_char dlsap_dst; + u_char mac_len; + struct sdl_hdr *sdlhdr_to; { - if ( !sdl_setaddrif(ifp, mac_src, dlsap_src, mac_len, - &sdlhdr_to->sdlhdr_src) || - !sdl_setaddrif(ifp, mac_dst, dlsap_dst, mac_len, - &sdlhdr_to->sdlhdr_dst) ) - return(0); - else return(1); + if (!sdl_setaddrif(ifp, mac_src, dlsap_src, mac_len, + &sdlhdr_to->sdlhdr_src) || + !sdl_setaddrif(ifp, mac_dst, dlsap_dst, mac_len, + &sdlhdr_to->sdlhdr_dst)) + return (0); + else + return (1); } -static struct sockaddr_dl sap_saddr; +static struct sockaddr_dl sap_saddr; static struct sockaddr_dl sap_sgate = { - sizeof(struct sockaddr_dl), /* _len */ - AF_LINK /* _af */ + sizeof(struct sockaddr_dl), /* _len */ + AF_LINK /* _af */ }; /* * Set sapinfo for SAP address, llcconfig, af, and interface */ struct npaidbentry * -llc_setsapinfo(struct ifnet *ifp, u_char af, u_char sap, struct dllconfig *llconf) +llc_setsapinfo(ifp, af, sap, llconf) + struct ifnet *ifp; + u_char af; + u_char sap; + struct dllconfig* llconf; { - struct protosw *pp; - struct sockaddr_dl *ifdl_addr; - struct rtentry *sirt = (struct rtentry *)0; - struct npaidbentry *sapinfo; - u_char saploc; - int size = sizeof(struct npaidbentry); + struct protosw *pp; + struct sockaddr_dl *ifdl_addr; + struct rtentry *sirt = (struct rtentry *) 0; + struct npaidbentry *sapinfo; + u_char saploc; + int size = sizeof(struct npaidbentry); USES_AF_LINK_RTS; - /* - * We rely/assume that only STREAM protocols will make use of - * connection oriented LLC2. If this will one day not be the - * case this will obviously fail. - */ - pp = pffindtype (af, SOCK_STREAM); - if (pp == 0 || pp->pr_input == 0 || pp->pr_ctlinput == 0) { - printf("network level protosw error"); - return 0; + /* + * We rely/assume that only STREAM protocols will make use of + * connection oriented LLC2. If this will one day not be the case + * this will obviously fail. + */ + pp = pffindtype(af, SOCK_STREAM); + if (pp == 0 || pp->pr_input == 0 || pp->pr_ctlinput == 0) { + printf("network level protosw error"); + return 0; } - /* * We need a way to jot down the LLC2 configuration for - * a certain LSAP address. To do this we enter + * a certain LSAP address. To do this we enter * a "route" for the SAP. */ ifdl_addr = sdl_getaddrif(ifp); - sdl_copy(ifdl_addr, &sap_saddr); + sdl_copy(ifdl_addr, &sap_saddr); sdl_copy(ifdl_addr, &sap_sgate); - saploc = LLSAPLOC(&sap_saddr, ifp); + saploc = LLSAPLOC(&sap_saddr, ifp); sap_saddr.sdl_data[saploc] = sap; sap_saddr.sdl_alen++; - /* now enter it */ - rtrequest(RTM_ADD, (struct sockaddr *)&sap_saddr, - (struct sockaddr *)&sap_sgate, 0, 0, &sirt); - if (sirt == 0) + /* now enter it */ + rtrequest(RTM_ADD, (struct sockaddr *) & sap_saddr, + (struct sockaddr *) & sap_sgate, 0, 0, &sirt); + if (sirt == 0) return 0; /* Plug in config information in rt->rt_llinfo */ - sirt->rt_llinfo = malloc(size , M_PCB, M_WAITOK); - sapinfo = (struct npaidbentry *) sirt->rt_llinfo; - if (sapinfo) { - bzero ((caddr_t)sapinfo, size); - /* - * For the time being we support LLC CLASS II here - * only - */ - sapinfo->si_class = LLC_CLASS_II; + sirt->rt_llinfo = malloc(size, M_PCB, M_WAITOK); + sapinfo = (struct npaidbentry *) sirt->rt_llinfo; + if (sapinfo) { + bzero((caddr_t) sapinfo, size); + /* + * For the time being we support LLC CLASS II here only + */ + sapinfo->si_class = LLC_CLASS_II; sapinfo->si_window = llconf->dllcfg_window; - sapinfo->si_trace = llconf->dllcfg_trace; + sapinfo->si_trace = llconf->dllcfg_trace; if (sapinfo->si_trace) llc_tracelevel--; - else llc_tracelevel++; - sapinfo->si_input = pp->pr_input; - sapinfo->si_ctlinput = (caddr_t (*)())pp->pr_ctlinput; + else + llc_tracelevel++; + sapinfo->si_input = pp->pr_input; + sapinfo->si_ctlinput = pp->pr_ctlinput; return (sapinfo); } - return 0; } /* - * Get sapinfo for SAP address and interface + * Get sapinfo for SAP address and interface */ struct npaidbentry * -llc_getsapinfo(u_char sap, struct ifnet *ifp) +llc_getsapinfo(sap, ifp) + u_char sap; + struct ifnet *ifp; { - struct sockaddr_dl *ifdl_addr; - struct sockaddr_dl si_addr; - struct rtentry *sirt; - u_char saploc; + struct sockaddr_dl *ifdl_addr; + struct sockaddr_dl si_addr; + struct rtentry *sirt; + u_char saploc; USES_AF_LINK_RTS; - ifdl_addr = sdl_getaddrif(ifp); - sdl_copy(ifdl_addr, &si_addr); - saploc = LLSAPLOC(&si_addr, ifp); + ifdl_addr = sdl_getaddrif(ifp); + sdl_copy(ifdl_addr, &si_addr); + saploc = LLSAPLOC(&si_addr, ifp); si_addr.sdl_data[saploc] = sap; si_addr.sdl_alen++; - if ((sirt = rtalloc1((struct sockaddr *)&si_addr, 0))) - sirt->rt_refcnt--; - else return(0); + if ((sirt = rtalloc1((struct sockaddr *) & si_addr, 0))) + sirt->rt_refcnt--; + else + return (0); - return((struct npaidbentry *)sirt->rt_llinfo); + return ((struct npaidbentry *) sirt->rt_llinfo); } /* @@ -308,8 +335,8 @@ llc_getsapinfo(u_char sap, struct ifnet *ifp) * The slot sl(sn) for any given sequence number sn is given by * * sl(sn) = (llcl_freeslot + llcl_window - 1 - (llcl_projvs + - * LLC_MAX_SEQUENCE- sn) % LLC_MAX_SEQUENCE) % - * llcl_window + * LLC_MAX_SEQUENCE- sn) % LLC_MAX_SEQUENCE) % + * llcl_window * * i.e. we first calculate the number of frames we need to ``go back'' * from the current one (really the next one, but that doesn't matter as @@ -318,12 +345,14 @@ llc_getsapinfo(u_char sap, struct ifnet *ifp) */ short -llc_seq2slot(struct llc_linkcb *linkp, short seqn) +llc_seq2slot(linkp, seqn) + struct llc_linkcb *linkp; + short seqn; { - register sn = 0; + register sn = 0; - sn = (linkp->llcl_freeslot + linkp->llcl_window - - (linkp->llcl_projvs + LLC_MAX_SEQUENCE - seqn) % + sn = (linkp->llcl_freeslot + linkp->llcl_window - + (linkp->llcl_projvs + LLC_MAX_SEQUENCE - seqn) % LLC_MAX_SEQUENCE) % linkp->llcl_window; return sn; @@ -334,10 +363,10 @@ llc_seq2slot(struct llc_linkcb *linkp, short seqn) * * There is in most cases one function per LLC2 state. The LLC2 standard * ISO 8802-2 allows in some cases for ambiguities, i.e. we have the choice - * to do one thing or the other. Right now I have just chosen one but have also - * indicated the spot by "multiple possibilities". One could make the behavior + * to do one thing or the other. Right now I have just chosen one but have also + * indicated the spot by "multiple possibilities". One could make the behavior * in those cases configurable, allowing the superuser to enter a profile word - * (32/64 bits, whatever is needed) that would suit her needs [I quite like + * (32/64 bits, whatever is needed) that would suit her needs [I quite like * that idea, perhaps I'll get around to it]. * * [Preceeding each state handler function is the description as taken from @@ -353,35 +382,39 @@ llc_seq2slot(struct llc_linkcb *linkp, short seqn) * command PDU with the P bit set to ``1''. */ int -llc_state_ADM(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, - int cmdrsp, int pollfinal) +llc_state_ADM(linkp, frame, frame_kind, cmdrsp, pollfinal) + struct llc_linkcb *linkp; + struct llc *frame; + int frame_kind; + int cmdrsp; + int pollfinal; { - int action = 0; + int action = 0; - switch(frame_kind + cmdrsp) { + switch (frame_kind + cmdrsp) { case NL_CONNECT_REQUEST: llc_send(linkp, LLCFT_SABME, LLC_CMD, pollfinal); - LLC_SETFLAG(linkp, P, pollfinal); - LLC_SETFLAG(linkp, S, 0); + LLC_SETFLAG(linkp,P,pollfinal); + LLC_SETFLAG(linkp,S,0); linkp->llcl_retry = 0; - LLC_NEWSTATE(linkp, SETUP); + LLC_NEWSTATE(linkp,SETUP); break; case LLCFT_SABME + LLC_CMD: - /* - * ISO 8802-2, table 7-1, ADM state says to set - * the P flag, yet this will cause an SABME [P] to be - * answered with an UA only, not an UA [F], all - * other `disconnected' states set the F flag, so ... + /* + * ISO 8802-2, table 7-1, ADM state says to set the P flag, + * yet this will cause an SABME [P] to be answered with an UA + * only, not an UA [F], all other `disconnected' states set + * the F flag, so ... */ - LLC_SETFLAG(linkp, F, pollfinal); - LLC_NEWSTATE(linkp, CONN); + LLC_SETFLAG(linkp,F,pollfinal); + LLC_NEWSTATE(linkp,CONN); action = LLC_CONNECT_INDICATION; break; case LLCFT_DISC + LLC_CMD: llc_send(linkp, LLCFT_DM, LLC_RSP, pollfinal); break; default: - if (cmdrsp == LLC_CMD && pollfinal == 1) + if (cmdrsp == LLC_CMD && pollfinal == 1) llc_send(linkp, LLCFT_DM, LLC_RSP, 1); /* remain in ADM state */ } @@ -395,31 +428,35 @@ llc_state_ADM(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, * refuse the connection. */ int -llc_state_CONN(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, - int cmdrsp, int pollfinal) +llc_state_CONN(linkp, frame, frame_kind, cmdrsp, pollfinal) + struct llc_linkcb *linkp; + struct llc *frame; + int frame_kind; + int cmdrsp; + int pollfinal; { - int action = 0; + int action = 0; - switch(frame_kind + cmdrsp) { + switch (frame_kind + cmdrsp) { case NL_CONNECT_RESPONSE: - llc_send(linkp, LLCFT_UA, LLC_RSP, LLC_GETFLAG(linkp, F)); + llc_send(linkp, LLCFT_UA, LLC_RSP, LLC_GETFLAG(linkp,F)); LLC_RESETCOUNTER(linkp); - LLC_SETFLAG(linkp, P, 0); - LLC_SETFLAG(linkp, REMOTE_BUSY, 0); - LLC_NEWSTATE(linkp, NORMAL); + LLC_SETFLAG(linkp,P,0); + LLC_SETFLAG(linkp,REMOTE_BUSY, 0); + LLC_NEWSTATE(linkp,NORMAL); break; case NL_DISCONNECT_REQUEST: - llc_send(linkp, LLCFT_DM, LLC_RSP, LLC_GETFLAG(linkp, F)); - LLC_NEWSTATE(linkp, ADM); + llc_send(linkp, LLCFT_DM, LLC_RSP, LLC_GETFLAG(linkp,F)); + LLC_NEWSTATE(linkp,ADM); break; case LLCFT_SABME + LLC_CMD: - LLC_SETFLAG(linkp, F, pollfinal); + LLC_SETFLAG(linkp,F,pollfinal); break; case LLCFT_DM + LLC_RSP: - LLC_NEWSTATE(linkp, ADM); + LLC_NEWSTATE(linkp,ADM); action = LLC_DISCONNECT_INDICATION; break; - /* all other frames effect nothing here */ + /* all other frames effect nothing here */ } return action; @@ -427,56 +464,60 @@ llc_state_CONN(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, /* * RESET_WAIT --- The local connection component is waiting for the local user - * to indicate a RESET_REQUEST or a DISCONNECT_REQUEST. + * to indicate a RESET_REQUEST or a DISCONNECT_REQUEST. */ int -llc_state_RESET_WAIT(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, - int cmdrsp, int pollfinal) +llc_state_RESET_WAIT(linkp, frame, frame_kind, cmdrsp, pollfinal) + struct llc_linkcb *linkp; + struct llc *frame; + int frame_kind; + int cmdrsp; + int pollfinal; { - int action = 0; + int action = 0; - switch(frame_kind + cmdrsp) { + switch (frame_kind + cmdrsp) { case NL_RESET_REQUEST: - if (LLC_GETFLAG(linkp, S) == 0) { + if (LLC_GETFLAG(linkp,S) == 0) { llc_send(linkp, LLCFT_SABME, LLC_CMD, pollfinal); - LLC_SETFLAG(linkp, P, pollfinal); + LLC_SETFLAG(linkp,P,pollfinal); LLC_START_ACK_TIMER(linkp); linkp->llcl_retry = 0; - LLC_NEWSTATE(linkp, RESET); + LLC_NEWSTATE(linkp,RESET); } else { - llc_send(linkp, LLCFT_UA, LLC_RSP, - LLC_GETFLAG(linkp, F)); + llc_send(linkp, LLCFT_UA, LLC_RSP, + LLC_GETFLAG(linkp,F)); LLC_RESETCOUNTER(linkp); - LLC_SETFLAG(linkp, P, 0); - LLC_SETFLAG(linkp, REMOTE_BUSY, 0); - LLC_NEWSTATE(linkp, NORMAL); + LLC_SETFLAG(linkp,P,0); + LLC_SETFLAG(linkp,REMOTE_BUSY,0); + LLC_NEWSTATE(linkp,NORMAL); action = LLC_RESET_CONFIRM; } break; case NL_DISCONNECT_REQUEST: - if (LLC_GETFLAG(linkp, S) == 0) { + if (LLC_GETFLAG(linkp,S) == 0) { llc_send(linkp, LLCFT_DISC, LLC_CMD, pollfinal); - LLC_SETFLAG(linkp, P, pollfinal); + LLC_SETFLAG(linkp,P,pollfinal); LLC_START_ACK_TIMER(linkp); linkp->llcl_retry = 0; - LLC_NEWSTATE(linkp, D_CONN); + LLC_NEWSTATE(linkp,D_CONN); } else { - llc_send(linkp, LLCFT_DM, LLC_RSP, - LLC_GETFLAG(linkp, F)); - LLC_NEWSTATE(linkp, ADM); + llc_send(linkp, LLCFT_DM, LLC_RSP, + LLC_GETFLAG(linkp,F)); + LLC_NEWSTATE(linkp,ADM); } break; case LLCFT_DM + LLC_RSP: - LLC_NEWSTATE(linkp, ADM); + LLC_NEWSTATE(linkp,ADM); action = LLC_DISCONNECT_INDICATION; break; case LLCFT_SABME + LLC_CMD: - LLC_SETFLAG(linkp, S, 1); - LLC_SETFLAG(linkp, F, pollfinal); + LLC_SETFLAG(linkp,S,1); + LLC_SETFLAG(linkp,F,pollfinal); break; case LLCFT_DISC + LLC_CMD: llc_send(linkp, LLCFT_DM, LLC_RSP, pollfinal); - LLC_NEWSTATE(linkp, ADM); + LLC_NEWSTATE(linkp,ADM); action = LLC_DISCONNECT_INDICATION; break; } @@ -489,32 +530,36 @@ llc_state_RESET_WAIT(struct llc_linkcb *linkp, struct llc *frame, int frame_kind * to accept or refuse a remote reset request. */ int -llc_state_RESET_CHECK(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, - int cmdrsp, int pollfinal) +llc_state_RESET_CHECK(linkp, frame, frame_kind, cmdrsp, pollfinal) + struct llc_linkcb *linkp; + struct llc *frame; + int frame_kind; + int cmdrsp; + int pollfinal; { - int action = 0; + int action = 0; - switch(frame_kind + cmdrsp) { + switch (frame_kind + cmdrsp) { case NL_RESET_RESPONSE: - llc_send(linkp, LLCFT_UA, LLC_RSP, LLC_GETFLAG(linkp, F)); + llc_send(linkp, LLCFT_UA, LLC_RSP, LLC_GETFLAG(linkp,F)); LLC_RESETCOUNTER(linkp); - LLC_SETFLAG(linkp, P, 0); - LLC_SETFLAG(linkp, REMOTE_BUSY, 0); - LLC_NEWSTATE(linkp, NORMAL); + LLC_SETFLAG(linkp,P,0); + LLC_SETFLAG(linkp,REMOTE_BUSY,0); + LLC_NEWSTATE(linkp,NORMAL); break; case NL_DISCONNECT_REQUEST: - llc_send(linkp, LLCFT_DM, LLC_RSP, LLC_GETFLAG(linkp, F)); - LLC_NEWSTATE(linkp, ADM); + llc_send(linkp, LLCFT_DM, LLC_RSP, LLC_GETFLAG(linkp,F)); + LLC_NEWSTATE(linkp,ADM); break; case LLCFT_DM + LLC_RSP: action = LLC_DISCONNECT_INDICATION; break; case LLCFT_SABME + LLC_CMD: - LLC_SETFLAG(linkp, F, pollfinal); + LLC_SETFLAG(linkp,F,pollfinal); break; case LLCFT_DISC + LLC_CMD: llc_send(linkp, LLCFT_DM, LLC_RSP, pollfinal); - LLC_NEWSTATE(linkp, ADM); + LLC_NEWSTATE(linkp,ADM); action = LLC_DISCONNECT_INDICATION; break; } @@ -527,52 +572,56 @@ llc_state_RESET_CHECK(struct llc_linkcb *linkp, struct llc *frame, int frame_kin * remote LLC DSAP and is waiting for a reply. */ int -llc_state_SETUP(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, - int cmdrsp, int pollfinal) +llc_state_SETUP(linkp, frame, frame_kind, cmdrsp, pollfinal) + struct llc_linkcb *linkp; + struct llc *frame; + int frame_kind; + int cmdrsp; + int pollfinal; { - int action = 0; + int action = 0; - switch(frame_kind + cmdrsp) { + switch (frame_kind + cmdrsp) { case LLCFT_SABME + LLC_CMD: LLC_RESETCOUNTER(linkp); llc_send(linkp, LLCFT_UA, LLC_RSP, pollfinal); - LLC_SETFLAG(linkp, S, 1); + LLC_SETFLAG(linkp,S,1); break; case LLCFT_UA + LLC_RSP: - if (LLC_GETFLAG(linkp, P) == pollfinal) { + if (LLC_GETFLAG(linkp,P) == pollfinal) { LLC_STOP_ACK_TIMER(linkp); LLC_RESETCOUNTER(linkp); - LLC_UPDATE_P_FLAG(linkp, cmdrsp, pollfinal); - LLC_SETFLAG(linkp, REMOTE_BUSY, 0); - LLC_NEWSTATE(linkp, NORMAL); + LLC_UPDATE_P_FLAG(linkp,cmdrsp,pollfinal); + LLC_SETFLAG(linkp,REMOTE_BUSY,0); + LLC_NEWSTATE(linkp,NORMAL); action = LLC_CONNECT_CONFIRM; } break; case LLC_ACK_TIMER_EXPIRED: - if (LLC_GETFLAG(linkp, S) == 1) { - LLC_SETFLAG(linkp, P, 0); - LLC_SETFLAG(linkp, REMOTE_BUSY, 0), - LLC_NEWSTATE(linkp, NORMAL); + if (LLC_GETFLAG(linkp,S) == 1) { + LLC_SETFLAG(linkp,P,0); + LLC_SETFLAG(linkp,REMOTE_BUSY,0), + LLC_NEWSTATE(linkp,NORMAL); action = LLC_CONNECT_CONFIRM; } else if (linkp->llcl_retry < llc_n2) { llc_send(linkp, LLCFT_SABME, LLC_CMD, pollfinal); - LLC_SETFLAG(linkp, P, pollfinal); + LLC_SETFLAG(linkp,P,pollfinal); LLC_START_ACK_TIMER(linkp); linkp->llcl_retry++; } else { - LLC_NEWSTATE(linkp, ADM); + LLC_NEWSTATE(linkp,ADM); action = LLC_DISCONNECT_INDICATION; } break; case LLCFT_DISC + LLC_CMD: llc_send(linkp, LLCFT_DM, LLC_RSP, pollfinal); LLC_STOP_ACK_TIMER(linkp); - LLC_NEWSTATE(linkp, ADM); + LLC_NEWSTATE(linkp,ADM); action = LLC_DISCONNECT_INDICATION; break; case LLCFT_DM + LLC_RSP: LLC_STOP_ACK_TIMER(linkp); - LLC_NEWSTATE(linkp, ADM); + LLC_NEWSTATE(linkp,ADM); action = LLC_DISCONNECT_INDICATION; break; } @@ -587,52 +636,56 @@ llc_state_SETUP(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, * connection and is waiting for a reply. */ int -llc_state_RESET(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, - int cmdrsp, int pollfinal) +llc_state_RESET(linkp, frame, frame_kind, cmdrsp, pollfinal) + struct llc_linkcb *linkp; + struct llc *frame; + int frame_kind; + int cmdrsp; + int pollfinal; { - int action = 0; + int action = 0; - switch(frame_kind + cmdrsp) { + switch (frame_kind + cmdrsp) { case LLCFT_SABME + LLC_CMD: LLC_RESETCOUNTER(linkp); - LLC_SETFLAG(linkp, S, 1); + LLC_SETFLAG(linkp,S,1); llc_send(linkp, LLCFT_UA, LLC_RSP, pollfinal); break; case LLCFT_UA + LLC_RSP: - if (LLC_GETFLAG(linkp, P) == pollfinal) { + if (LLC_GETFLAG(linkp,P) == pollfinal) { LLC_STOP_ACK_TIMER(linkp); LLC_RESETCOUNTER(linkp); - LLC_UPDATE_P_FLAG(linkp, cmdrsp, pollfinal); - LLC_SETFLAG(linkp, REMOTE_BUSY, 0); - LLC_NEWSTATE(linkp, NORMAL); + LLC_UPDATE_P_FLAG(linkp,cmdrsp,pollfinal); + LLC_SETFLAG(linkp,REMOTE_BUSY,0); + LLC_NEWSTATE(linkp,NORMAL); action = LLC_RESET_CONFIRM; } break; case LLC_ACK_TIMER_EXPIRED: - if (LLC_GETFLAG(linkp, S) == 1) { - LLC_SETFLAG(linkp, P, 0); - LLC_SETFLAG(linkp, REMOTE_BUSY, 0); - LLC_NEWSTATE(linkp, NORMAL); + if (LLC_GETFLAG(linkp,S) == 1) { + LLC_SETFLAG(linkp,P,0); + LLC_SETFLAG(linkp,REMOTE_BUSY,0); + LLC_NEWSTATE(linkp,NORMAL); action = LLC_RESET_CONFIRM; } else if (linkp->llcl_retry < llc_n2) { llc_send(linkp, LLCFT_SABME, LLC_CMD, pollfinal); - LLC_SETFLAG(linkp, P, pollfinal); + LLC_SETFLAG(linkp,P,pollfinal); LLC_START_ACK_TIMER(linkp); linkp->llcl_retry++; } else { - LLC_NEWSTATE(linkp, ADM); + LLC_NEWSTATE(linkp,ADM); action = LLC_DISCONNECT_INDICATION; } break; case LLCFT_DISC + LLC_CMD: llc_send(linkp, LLCFT_DM, LLC_RSP, pollfinal); LLC_STOP_ACK_TIMER(linkp); - LLC_NEWSTATE(linkp, ADM); + LLC_NEWSTATE(linkp,ADM); action = LLC_DISCONNECT_INDICATION; break; case LLCFT_DM + LLC_RSP: LLC_STOP_ACK_TIMER(linkp); - LLC_NEWSTATE(linkp, ADM); + LLC_NEWSTATE(linkp,ADM); action = LLC_DISCONNECT_INDICATION; break; } @@ -646,21 +699,25 @@ llc_state_RESET(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, * for a reply. */ int -llc_state_D_CONN(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, - int cmdrsp, int pollfinal) +llc_state_D_CONN(linkp, frame, frame_kind, cmdrsp, pollfinal) + struct llc_linkcb *linkp; + struct llc *frame; + int frame_kind; + int cmdrsp; + int pollfinal; { - int action = 0; + int action = 0; - switch(frame_kind + cmdrsp) { + switch (frame_kind + cmdrsp) { case LLCFT_SABME + LLC_CMD: llc_send(linkp, LLCFT_DM, LLC_RSP, pollfinal); LLC_STOP_ACK_TIMER(linkp); - LLC_NEWSTATE(linkp, ADM); + LLC_NEWSTATE(linkp,ADM); break; case LLCFT_UA + LLC_RSP: - if (LLC_GETFLAG(linkp, P) == pollfinal) { + if (LLC_GETFLAG(linkp,P) == pollfinal) { LLC_STOP_ACK_TIMER(linkp); - LLC_NEWSTATE(linkp, ADM); + LLC_NEWSTATE(linkp,ADM); } break; case LLCFT_DISC + LLC_CMD: @@ -668,15 +725,16 @@ llc_state_D_CONN(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, break; case LLCFT_DM + LLC_RSP: LLC_STOP_ACK_TIMER(linkp); - LLC_NEWSTATE(linkp, ADM); + LLC_NEWSTATE(linkp,ADM); break; case LLC_ACK_TIMER_EXPIRED: if (linkp->llcl_retry < llc_n2) { llc_send(linkp, LLCFT_DISC, LLC_CMD, pollfinal); - LLC_SETFLAG(linkp, P, pollfinal); + LLC_SETFLAG(linkp,P,pollfinal); LLC_START_ACK_TIMER(linkp); linkp->llcl_retry++; - } else LLC_NEWSTATE(linkp, ADM); + } else + LLC_NEWSTATE(linkp,ADM); break; } @@ -685,36 +743,40 @@ llc_state_D_CONN(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, /* * ERROR --- The local connection component has detected an error in a received - * PDU and has sent a FRMR response PDU. It is waiting for a reply from + * PDU and has sent a FRMR response PDU. It is waiting for a reply from * the remote connection component. */ int -llc_state_ERROR(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, - int cmdrsp, int pollfinal) +llc_state_ERROR(linkp, frame, frame_kind, cmdrsp, pollfinal) + struct llc_linkcb *linkp; + struct llc *frame; + int frame_kind; + int cmdrsp; + int pollfinal; { - int action = 0; + int action = 0; - switch(frame_kind + cmdrsp) { + switch (frame_kind + cmdrsp) { case LLCFT_SABME + LLC_CMD: LLC_STOP_ACK_TIMER(linkp); - LLC_NEWSTATE(linkp, RESET_CHECK); + LLC_NEWSTATE(linkp,RESET_CHECK); action = LLC_RESET_INDICATION_REMOTE; break; case LLCFT_DISC + LLC_CMD: llc_send(linkp, LLCFT_UA, LLC_RSP, pollfinal); LLC_STOP_ACK_TIMER(linkp); - LLC_NEWSTATE(linkp, ADM); + LLC_NEWSTATE(linkp,ADM); action = LLC_DISCONNECT_INDICATION; break; case LLCFT_DM + LLC_RSP: LLC_STOP_ACK_TIMER(linkp); - LLC_NEWSTATE(linkp, ADM); + LLC_NEWSTATE(linkp,ADM); action = LLC_DISCONNECT_INDICATION; break; case LLCFT_FRMR + LLC_RSP: LLC_STOP_ACK_TIMER(linkp); - LLC_SETFLAG(linkp, S, 0); - LLC_NEWSTATE(linkp, RESET_WAIT); + LLC_SETFLAG(linkp,S,0); + LLC_NEWSTATE(linkp,RESET_WAIT); action = LLC_FRMR_RECEIVED; break; case LLC_ACK_TIMER_EXPIRED: @@ -723,13 +785,13 @@ llc_state_ERROR(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, LLC_START_ACK_TIMER(linkp); linkp->llcl_retry++; } else { - LLC_SETFLAG(linkp, S, 0); - LLC_NEWSTATE(linkp, RESET_WAIT); + LLC_SETFLAG(linkp,S,0); + LLC_NEWSTATE(linkp,RESET_WAIT); action = LLC_RESET_INDICATION_LOCAL; } break; default: - if (cmdrsp == LLC_CMD){ + if (cmdrsp == LLC_CMD) { llc_send(linkp, LLCFT_FRMR, LLC_RSP, pollfinal); LLC_START_ACK_TIMER(linkp); } @@ -745,92 +807,101 @@ llc_state_ERROR(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, * a common core state handler. */ int -llc_state_NBRAcore(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, - int cmdrsp, int pollfinal) +llc_state_NBRAcore(linkp, frame, frame_kind, cmdrsp, pollfinal) + struct llc_linkcb *linkp; + struct llc *frame; + int frame_kind; + int cmdrsp; + int pollfinal; { - int action = 0; + int action = 0; - switch(frame_kind + cmdrsp) { + switch (frame_kind + cmdrsp) { case NL_DISCONNECT_REQUEST: llc_send(linkp, LLCFT_DISC, LLC_CMD, pollfinal); - LLC_SETFLAG(linkp, P, pollfinal); + LLC_SETFLAG(linkp,P,pollfinal); LLC_STOP_ALL_TIMERS(linkp); LLC_START_ACK_TIMER(linkp); linkp->llcl_retry = 0; - LLC_NEWSTATE(linkp, D_CONN); + LLC_NEWSTATE(linkp,D_CONN); break; case NL_RESET_REQUEST: llc_send(linkp, LLCFT_SABME, LLC_CMD, pollfinal); - LLC_SETFLAG(linkp, P, pollfinal); + LLC_SETFLAG(linkp,P,pollfinal); LLC_STOP_ALL_TIMERS(linkp); LLC_START_ACK_TIMER(linkp); linkp->llcl_retry = 0; - LLC_SETFLAG(linkp, S, 0); - LLC_NEWSTATE(linkp, RESET); + LLC_SETFLAG(linkp,S,0); + LLC_NEWSTATE(linkp,RESET); break; case LLCFT_SABME + LLC_CMD: - LLC_SETFLAG(linkp, F, pollfinal); + LLC_SETFLAG(linkp,F,pollfinal); LLC_STOP_ALL_TIMERS(linkp); - LLC_NEWSTATE(linkp, RESET_CHECK); + LLC_NEWSTATE(linkp,RESET_CHECK); action = LLC_RESET_INDICATION_REMOTE; break; case LLCFT_DISC + LLC_CMD: llc_send(linkp, LLCFT_UA, LLC_RSP, pollfinal); LLC_STOP_ALL_TIMERS(linkp); - LLC_NEWSTATE(linkp, ADM); + LLC_NEWSTATE(linkp,ADM); action = LLC_DISCONNECT_INDICATION; break; case LLCFT_FRMR + LLC_RSP: LLC_STOP_ALL_TIMERS(linkp); - LLC_SETFLAG(linkp, S, 0); - LLC_NEWSTATE(linkp, RESET_WAIT); - action = LLC_FRMR_RECEIVED; + LLC_SETFLAG(linkp,S,0); + LLC_NEWSTATE(linkp,RESET_WAIT); + action = LLC_FRMR_RECEIVED; break; case LLCFT_DM + LLC_RSP: LLC_STOP_ALL_TIMERS(linkp); - LLC_NEWSTATE(linkp, ADM); + LLC_NEWSTATE(linkp,ADM); action = LLC_DISCONNECT_INDICATION; break; case LLC_INVALID_NR + LLC_CMD: case LLC_INVALID_NS + LLC_CMD: - LLC_SETFRMR(linkp, frame, cmdrsp, - (frame_kind == LLC_INVALID_NR ? LLC_FRMR_Z : - (LLC_FRMR_V | LLC_FRMR_W))); + LLC_SETFRMR(linkp, frame, cmdrsp, + (frame_kind == LLC_INVALID_NR ? LLC_FRMR_Z : + (LLC_FRMR_V | LLC_FRMR_W))); llc_send(linkp, LLCFT_FRMR, LLC_RSP, pollfinal); LLC_STOP_ALL_TIMERS(linkp); LLC_START_ACK_TIMER(linkp); linkp->llcl_retry = 0; - LLC_NEWSTATE(linkp, ERROR); + LLC_NEWSTATE(linkp,ERROR); action = LLC_FRMR_SENT; break; case LLC_INVALID_NR + LLC_RSP: case LLC_INVALID_NS + LLC_RSP: case LLCFT_UA + LLC_RSP: - case LLC_BAD_PDU: { - char frmrcause = 0; + case LLC_BAD_PDU:{ + char frmrcause = 0; - switch (frame_kind) { - case LLC_INVALID_NR: frmrcause = LLC_FRMR_Z; break; - case LLC_INVALID_NS: frmrcause = LLC_FRMR_V | LLC_FRMR_W; break; - default: frmrcause = LLC_FRMR_W; + switch (frame_kind) { + case LLC_INVALID_NR: + frmrcause = LLC_FRMR_Z; + break; + case LLC_INVALID_NS: + frmrcause = LLC_FRMR_V | LLC_FRMR_W; + break; + default: + frmrcause = LLC_FRMR_W; + } + LLC_SETFRMR(linkp,frame,cmdrsp,frmrcause); + llc_send(linkp, LLCFT_FRMR, LLC_RSP, 0); + LLC_STOP_ALL_TIMERS(linkp); + LLC_START_ACK_TIMER(linkp); + linkp->llcl_retry = 0; + LLC_NEWSTATE(linkp,ERROR); + action = LLC_FRMR_SENT; + break; } - LLC_SETFRMR(linkp, frame, cmdrsp, frmrcause); - llc_send(linkp, LLCFT_FRMR, LLC_RSP, 0); - LLC_STOP_ALL_TIMERS(linkp); - LLC_START_ACK_TIMER(linkp); - linkp->llcl_retry = 0; - LLC_NEWSTATE(linkp, ERROR); - action = LLC_FRMR_SENT; - break; - } default: - if (cmdrsp == LLC_RSP && pollfinal == 1 && - LLC_GETFLAG(linkp, P) == 0) { - LLC_SETFRMR(linkp, frame, cmdrsp, LLC_FRMR_W); + if (cmdrsp == LLC_RSP && pollfinal == 1 && + LLC_GETFLAG(linkp,P) == 0) { + LLC_SETFRMR(linkp,frame,cmdrsp,LLC_FRMR_W); LLC_STOP_ALL_TIMERS(linkp); LLC_START_ACK_TIMER(linkp); linkp->llcl_retry = 0; - LLC_NEWSTATE(linkp, ERROR); + LLC_NEWSTATE(linkp,ERROR); action = LLC_FRMR_SENT; } break; @@ -840,8 +911,8 @@ llc_state_NBRAcore(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, case LLC_BUSY_TIMER_EXPIRED: if (linkp->llcl_retry >= llc_n2) { LLC_STOP_ALL_TIMERS(linkp); - LLC_SETFLAG(linkp, S, 0); - LLC_NEWSTATE(linkp, RESET_WAIT); + LLC_SETFLAG(linkp,S,0); + LLC_NEWSTATE(linkp,RESET_WAIT); action = LLC_RESET_INDICATION_LOCAL; } break; @@ -856,26 +927,32 @@ llc_state_NBRAcore(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, * reception of information and supervisory PDUs can be performed. */ int -llc_state_NORMAL(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, - int cmdrsp, int pollfinal) +llc_state_NORMAL(linkp, frame, frame_kind, cmdrsp, pollfinal) + struct llc_linkcb *linkp; + struct llc *frame; + int frame_kind; + int cmdrsp; + int pollfinal; { - int action = LLC_PASSITON; + int action = LLC_PASSITON; - switch(frame_kind + cmdrsp) { + switch (frame_kind + cmdrsp) { case NL_DATA_REQUEST: - if (LLC_GETFLAG(linkp, REMOTE_BUSY) == 0) { + if (LLC_GETFLAG(linkp,REMOTE_BUSY) == 0) { #ifdef not_now - if (LLC_GETFLAG(linkp, P) == 0) { + if (LLC_GETFLAG(linkp,P) == 0) { /* multiple possibilities */ llc_send(linkp, LLCFT_INFO, LLC_CMD, 1); LLC_START_P_TIMER(linkp); - if (LLC_TIMERXPIRED(linkp, ACK) != LLC_TIMER_RUNNING) + if (LLC_TIMERXPIRED(linkp,ACK) != + LLC_TIMER_RUNNING) LLC_START_ACK_TIMER(linkp); } else { -#endif +#endif /* multiple possibilities */ llc_send(linkp, LLCFT_INFO, LLC_CMD, 0); - if (LLC_TIMERXPIRED(linkp, ACK) != LLC_TIMER_RUNNING) + if (LLC_TIMERXPIRED(linkp,ACK) != + LLC_TIMER_RUNNING) LLC_START_ACK_TIMER(linkp); #ifdef not_now } @@ -884,140 +961,148 @@ llc_state_NORMAL(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, } break; case LLC_LOCAL_BUSY_DETECTED: - if (LLC_GETFLAG(linkp, P) == 0) { + if (LLC_GETFLAG(linkp,P) == 0) { /* multiple possibilities --- action-wise */ /* multiple possibilities --- CMD/RSP-wise */ llc_send(linkp, LLCFT_RNR, LLC_CMD, 0); LLC_START_P_TIMER(linkp); - LLC_SETFLAG(linkp, DATA, 0); - LLC_NEWSTATE(linkp, BUSY); + LLC_SETFLAG(linkp,DATA,0); + LLC_NEWSTATE(linkp,BUSY); action = 0; - } else { + } else { /* multiple possibilities --- CMD/RSP-wise */ llc_send(linkp, LLCFT_RNR, LLC_CMD, 0); - LLC_SETFLAG(linkp, DATA, 0); - LLC_NEWSTATE(linkp, BUSY); - action = 0; + LLC_SETFLAG(linkp,DATA,0); + LLC_NEWSTATE(linkp,BUSY); + action = 0; } break; case LLC_INVALID_NS + LLC_CMD: - case LLC_INVALID_NS + LLC_RSP: { - register int p = LLC_GETFLAG(linkp, P); - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - if (cmdrsp == LLC_CMD && pollfinal == 1) { - llc_send(linkp, LLCFT_REJ, LLC_RSP, 1); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_START_REJ_TIMER(linkp); - LLC_NEWSTATE(linkp, REJECT); - action = 0; - } else if (pollfinal == 0 && p == 1) { - llc_send(linkp, LLCFT_REJ, LLC_CMD, 0); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_START_REJ_TIMER(linkp); - LLC_NEWSTATE(linkp, REJECT); - action = 0; - } else if ((pollfinal == 0 && p == 0) || - (pollfinal == 1 && p == 1 && cmdrsp == LLC_RSP)) { - llc_send(linkp, LLCFT_REJ, LLC_CMD, 1); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_START_P_TIMER(linkp); - LLC_START_REJ_TIMER(linkp); - if (cmdrsp == LLC_RSP && pollfinal == 1) { - LLC_CLEAR_REMOTE_BUSY(linkp, action); - } else action = 0; - LLC_NEWSTATE(linkp, REJECT); + case LLC_INVALID_NS + LLC_RSP:{ + register int p = LLC_GETFLAG(linkp,P); + register int nr = + LLCGBITS(frame->llc_control_ext,s_nr); + + if (cmdrsp == LLC_CMD && pollfinal == 1) { + llc_send(linkp, LLCFT_REJ, LLC_RSP, 1); + LLC_UPDATE_NR_RECEIVED(linkp,nr); + LLC_START_REJ_TIMER(linkp); + LLC_NEWSTATE(linkp,REJECT); + action = 0; + } else if (pollfinal == 0 && p == 1) { + llc_send(linkp, LLCFT_REJ, LLC_CMD, 0); + LLC_UPDATE_NR_RECEIVED(linkp,nr); + LLC_START_REJ_TIMER(linkp); + LLC_NEWSTATE(linkp,REJECT); + action = 0; + } else if ((pollfinal == 0 && p == 0) || + (pollfinal == 1 && p == 1 && cmdrsp == LLC_RSP)) { + llc_send(linkp, LLCFT_REJ, LLC_CMD, 1); + LLC_UPDATE_NR_RECEIVED(linkp,nr); + LLC_START_P_TIMER(linkp); + LLC_START_REJ_TIMER(linkp); + if (cmdrsp == LLC_RSP && pollfinal == 1) { + LLC_CLEAR_REMOTE_BUSY(linkp,action); + } else + action = 0; + LLC_NEWSTATE(linkp,REJECT); + } + break; } - break; - } case LLCFT_INFO + LLC_CMD: - case LLCFT_INFO + LLC_RSP: { - register int p = LLC_GETFLAG(linkp, P); - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - if (cmdrsp == LLC_CMD && pollfinal == 1) { - LLC_INC(linkp->llcl_vr); - LLC_SENDACKNOWLEDGE(linkp, LLC_RSP, 1); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - action = LLC_DATA_INDICATION; - } else if (pollfinal == 0 && p == 1) { - LLC_INC(linkp->llcl_vr); - LLC_SENDACKNOWLEDGE(linkp, LLC_CMD, 0); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - action = LLC_DATA_INDICATION; - } else if ((pollfinal == 0 && p == 0 && cmdrsp == LLC_CMD) || - (pollfinal == p && cmdrsp == LLC_RSP)) { - LLC_INC(linkp->llcl_vr); - LLC_UPDATE_P_FLAG(linkp, cmdrsp, pollfinal); - LLC_SENDACKNOWLEDGE(linkp, LLC_CMD, 0); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - if (cmdrsp == LLC_RSP && pollfinal == 1) - LLC_CLEAR_REMOTE_BUSY(linkp, action); - action = LLC_DATA_INDICATION; + case LLCFT_INFO + LLC_RSP:{ + register int p = LLC_GETFLAG(linkp,P); + register int nr = + LLCGBITS(frame->llc_control_ext,s_nr); + + if (cmdrsp == LLC_CMD && pollfinal == 1) { + LLC_INC(linkp->llcl_vr); + LLC_SENDACKNOWLEDGE(linkp,LLC_RSP,1); + LLC_UPDATE_NR_RECEIVED(linkp,nr); + action = LLC_DATA_INDICATION; + } else if (pollfinal == 0 && p == 1) { + LLC_INC(linkp->llcl_vr); + LLC_SENDACKNOWLEDGE(linkp,LLC_CMD,0); + LLC_UPDATE_NR_RECEIVED(linkp,nr); + action = LLC_DATA_INDICATION; + } else if ((pollfinal == 0 && p == 0 && + cmdrsp == LLC_CMD) || + (pollfinal == p && cmdrsp == LLC_RSP)) { + LLC_INC(linkp->llcl_vr); + LLC_UPDATE_P_FLAG(linkp,cmdrsp,pollfinal); + LLC_SENDACKNOWLEDGE(linkp,LLC_CMD,0); + LLC_UPDATE_NR_RECEIVED(linkp,nr); + if (cmdrsp == LLC_RSP && pollfinal == 1) + LLC_CLEAR_REMOTE_BUSY(linkp,action); + action = LLC_DATA_INDICATION; + } + break; } - break; - } case LLCFT_RR + LLC_CMD: - case LLCFT_RR + LLC_RSP: { - register int p = LLC_GETFLAG(linkp, P); - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - if (cmdrsp == LLC_CMD && pollfinal == 1) { - LLC_SENDACKNOWLEDGE(linkp, LLC_RSP, 1); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_CLEAR_REMOTE_BUSY(linkp, action); - } else if ((pollfinal == 0) || - (cmdrsp == LLC_RSP && pollfinal == 1 && p == 1)) { - LLC_UPDATE_P_FLAG(linkp, cmdrsp, pollfinal); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_CLEAR_REMOTE_BUSY(linkp, action); - } - break; - } + case LLCFT_RR + LLC_RSP:{ + register int p = LLC_GETFLAG(linkp,P); + register int nr = + LLCGBITS(frame->llc_control_ext,s_nr); + + if (cmdrsp == LLC_CMD && pollfinal == 1) { + LLC_SENDACKNOWLEDGE(linkp,LLC_RSP,1); + LLC_UPDATE_NR_RECEIVED(linkp,nr); + LLC_CLEAR_REMOTE_BUSY(linkp,action); + } else if ((pollfinal == 0) || + (cmdrsp == LLC_RSP && pollfinal == 1 && p == 1)) { + LLC_UPDATE_P_FLAG(linkp,cmdrsp,pollfinal); + LLC_UPDATE_NR_RECEIVED(linkp,nr); + LLC_CLEAR_REMOTE_BUSY(linkp,action); + } + break; + } case LLCFT_RNR + LLC_CMD: - case LLCFT_RNR + LLC_RSP: { - register int p = LLC_GETFLAG(linkp, P); - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - if (cmdrsp == LLC_CMD && pollfinal == 1) { - llc_send(linkp, LLCFT_RR, LLC_RSP, 1); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_SET_REMOTE_BUSY(linkp, action); - } else if ((pollfinal == 0) || - (cmdrsp == LLC_RSP && pollfinal == 1 && p == 1)) { - LLC_UPDATE_P_FLAG(linkp, cmdrsp, pollfinal); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_SET_REMOTE_BUSY(linkp, action); + case LLCFT_RNR + LLC_RSP:{ + register int p = LLC_GETFLAG(linkp,P); + register int nr = + LLCGBITS(frame->llc_control_ext,s_nr); + + if (cmdrsp == LLC_CMD && pollfinal == 1) { + llc_send(linkp, LLCFT_RR, LLC_RSP, 1); + LLC_UPDATE_NR_RECEIVED(linkp,nr); + LLC_SET_REMOTE_BUSY(linkp,action); + } else if ((pollfinal == 0) || + (cmdrsp == LLC_RSP && pollfinal == 1 && p == 1)) { + LLC_UPDATE_P_FLAG(linkp,cmdrsp,pollfinal); + LLC_UPDATE_NR_RECEIVED(linkp,nr); + LLC_SET_REMOTE_BUSY(linkp,action); + } + break; } - break; - } case LLCFT_REJ + LLC_CMD: - case LLCFT_REJ + LLC_RSP: { - register int p = LLC_GETFLAG(linkp, P); - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - if (cmdrsp == LLC_CMD && pollfinal == 1) { - linkp->llcl_vs = nr; - LLC_UPDATE_NR_RECEIVED(linkp, nr); - llc_resend(linkp, LLC_RSP, 1); - LLC_CLEAR_REMOTE_BUSY(linkp, action); - } else if (pollfinal == 0 && p == 1) { - linkp->llcl_vs = nr; - LLC_UPDATE_NR_RECEIVED(linkp, nr); - llc_resend(linkp, LLC_CMD, 0); - LLC_CLEAR_REMOTE_BUSY(linkp, action); - } else if ((pollfinal == 0 && p == 0 && cmdrsp == LLC_CMD) || - (pollfinal == p && cmdrsp == LLC_RSP)) { - linkp->llcl_vs = nr; - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_START_P_TIMER(linkp); - llc_resend(linkp, LLC_CMD, 1); - LLC_CLEAR_REMOTE_BUSY(linkp, action); + case LLCFT_REJ + LLC_RSP:{ + register int p = LLC_GETFLAG(linkp,P); + register int nr = + LLCGBITS(frame->llc_control_ext,s_nr); + + if (cmdrsp == LLC_CMD && pollfinal == 1) { + linkp->llcl_vs = nr; + LLC_UPDATE_NR_RECEIVED(linkp,nr); + llc_resend(linkp,LLC_RSP,1); + LLC_CLEAR_REMOTE_BUSY(linkp,action); + } else if (pollfinal == 0 && p == 1) { + linkp->llcl_vs = nr; + LLC_UPDATE_NR_RECEIVED(linkp,nr); + llc_resend(linkp, LLC_CMD, 0); + LLC_CLEAR_REMOTE_BUSY(linkp,action); + } else if ((pollfinal == 0 && p == 0 && + cmdrsp == LLC_CMD) || + (pollfinal == p && cmdrsp == LLC_RSP)) { + linkp->llcl_vs = nr; + LLC_UPDATE_NR_RECEIVED(linkp,nr); + LLC_START_P_TIMER(linkp); + llc_resend(linkp, LLC_CMD, 1); + LLC_CLEAR_REMOTE_BUSY(linkp,action); + } + break; } - break; - } case NL_INITIATE_PF_CYCLE: - if (LLC_GETFLAG(linkp, P) == 0) { + if (LLC_GETFLAG(linkp,P) == 0) { llc_send(linkp, LLCFT_RR, LLC_CMD, 1); LLC_START_P_TIMER(linkp); action = 0; @@ -1028,24 +1113,24 @@ llc_state_NORMAL(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, llc_send(linkp, LLCFT_RR, LLC_CMD, 1); LLC_START_P_TIMER(linkp); linkp->llcl_retry++; - LLC_NEWSTATE(linkp, AWAIT); + LLC_NEWSTATE(linkp,AWAIT); action = 0; } break; case LLC_ACK_TIMER_EXPIRED: case LLC_BUSY_TIMER_EXPIRED: - if ((LLC_GETFLAG(linkp, P) == 0) + if ((LLC_GETFLAG(linkp,P) == 0) && (linkp->llcl_retry < llc_n2)) { llc_send(linkp, LLCFT_RR, LLC_CMD, 1); LLC_START_P_TIMER(linkp); linkp->llcl_retry++; - LLC_NEWSTATE(linkp, AWAIT); + LLC_NEWSTATE(linkp,AWAIT); action = 0; } break; } if (action == LLC_PASSITON) - action = llc_state_NBRAcore(linkp, frame, frame_kind, + action = llc_state_NBRAcore(linkp, frame, frame_kind, cmdrsp, pollfinal); return action; @@ -1059,196 +1144,211 @@ llc_state_NORMAL(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, * and received. */ int -llc_state_BUSY(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, - int cmdrsp, int pollfinal) +llc_state_BUSY(linkp, frame, frame_kind, cmdrsp, pollfinal) + struct llc_linkcb *linkp; + struct llc *frame; + int frame_kind; + int cmdrsp; + int pollfinal; { - int action = LLC_PASSITON; + int action = LLC_PASSITON; - switch(frame_kind + cmdrsp) { + switch (frame_kind + cmdrsp) { case NL_DATA_REQUEST: - if (LLC_GETFLAG(linkp, REMOTE_BUSY) == 0) - if (LLC_GETFLAG(linkp, P) == 0) { + if (LLC_GETFLAG(linkp,REMOTE_BUSY) == 0) + if (LLC_GETFLAG(linkp,P) == 0) { llc_send(linkp, LLCFT_INFO, LLC_CMD, 1); LLC_START_P_TIMER(linkp); - if (LLC_TIMERXPIRED(linkp, ACK) != LLC_TIMER_RUNNING) + if (LLC_TIMERXPIRED(linkp,ACK) != + LLC_TIMER_RUNNING) LLC_START_ACK_TIMER(linkp); action = 0; } else { llc_send(linkp, LLCFT_INFO, LLC_CMD, 0); - if (LLC_TIMERXPIRED(linkp, ACK) != LLC_TIMER_RUNNING) + if (LLC_TIMERXPIRED(linkp,ACK) != + LLC_TIMER_RUNNING) LLC_START_ACK_TIMER(linkp); action = 0; } break; - case LLC_LOCAL_BUSY_CLEARED: { - register int p = LLC_GETFLAG(linkp, P); - register int df = LLC_GETFLAG(linkp, DATA); - - switch (df) { - case 1: - if (p == 0) { - /* multiple possibilities */ - llc_send(linkp, LLCFT_REJ, LLC_CMD, 1); - LLC_START_REJ_TIMER(linkp); - LLC_START_P_TIMER(linkp); - LLC_NEWSTATE(linkp, REJECT); - action = 0; - } else { - llc_send(linkp, LLCFT_REJ, LLC_CMD, 0); - LLC_START_REJ_TIMER(linkp); - LLC_NEWSTATE(linkp, REJECT); - action = 0; + case LLC_LOCAL_BUSY_CLEARED:{ + register int p = LLC_GETFLAG(linkp,P); + register int df = LLC_GETFLAG(linkp,DATA); + + switch (df) { + case 1: + if (p == 0) { + /* multiple possibilities */ + llc_send(linkp, LLCFT_REJ, LLC_CMD, 1); + LLC_START_REJ_TIMER(linkp); + LLC_START_P_TIMER(linkp); + LLC_NEWSTATE(linkp,REJECT); + action = 0; + } else { + llc_send(linkp, LLCFT_REJ, LLC_CMD, 0); + LLC_START_REJ_TIMER(linkp); + LLC_NEWSTATE(linkp,REJECT); + action = 0; + } + break; + case 0: + if (p == 0) { + /* multiple possibilities */ + llc_send(linkp, LLCFT_RR, LLC_CMD, 1); + LLC_START_P_TIMER(linkp); + LLC_NEWSTATE(linkp,NORMAL); + action = 0; + } else { + llc_send(linkp, LLCFT_RR, LLC_CMD, 0); + LLC_NEWSTATE(linkp,NORMAL); + action = 0; + } + break; + case 2: + if (p == 0) { + /* multiple possibilities */ + llc_send(linkp, LLCFT_RR, LLC_CMD, 1); + LLC_START_P_TIMER(linkp); + LLC_NEWSTATE(linkp,REJECT); + action = 0; + } else { + llc_send(linkp, LLCFT_RR, LLC_CMD, 0); + LLC_NEWSTATE(linkp,REJECT); + action = 0; + } + break; } break; - case 0: - if (p == 0) { - /* multiple possibilities */ - llc_send(linkp, LLCFT_RR, LLC_CMD, 1); - LLC_START_P_TIMER(linkp); - LLC_NEWSTATE(linkp, NORMAL); + } + case LLC_INVALID_NS + LLC_CMD: + case LLC_INVALID_NS + LLC_RSP:{ + register int p = LLC_GETFLAG(linkp,P); + register int nr = + LLCGBITS(frame->llc_control_ext,s_nr); + + if (cmdrsp == LLC_CMD && pollfinal == 1) { + llc_send(linkp, LLCFT_RNR, LLC_RSP, 1); + LLC_UPDATE_NR_RECEIVED(linkp,nr); + if (LLC_GETFLAG(linkp,DATA) == 0) + LLC_SETFLAG(linkp,DATA,1); action = 0; - } else { - llc_send(linkp, LLCFT_RR, LLC_CMD, 0); - LLC_NEWSTATE(linkp, NORMAL); + } else if ((cmdrsp == LLC_CMD && pollfinal == 0 && + p == 0) || + (cmdrsp == LLC_RSP && pollfinal == p)) { + llc_send(linkp, LLCFT_RNR, LLC_CMD, 0); + LLC_UPDATE_P_FLAG(linkp,cmdrsp,pollfinal); + LLC_UPDATE_NR_RECEIVED(linkp,nr); + if (LLC_GETFLAG(linkp,DATA) == 0) + LLC_SETFLAG(linkp,DATA,1); + if (cmdrsp == LLC_RSP && pollfinal == 1) { + LLC_CLEAR_REMOTE_BUSY(linkp,action); + } else + action = 0; + } else if (pollfinal == 0 && p == 1) { + llc_send(linkp, LLCFT_RNR, LLC_RSP, 1); + LLC_UPDATE_NR_RECEIVED(linkp,nr); + if (LLC_GETFLAG(linkp,DATA) == 0) + LLC_SETFLAG(linkp,DATA,1); action = 0; } break; - case 2: - if (p == 0) { - /* multiple possibilities */ - llc_send(linkp, LLCFT_RR, LLC_CMD, 1); + } + case LLCFT_INFO + LLC_CMD: + case LLCFT_INFO + LLC_RSP:{ + register int p = LLC_GETFLAG(linkp,P); + register int nr = + LLCGBITS(frame->llc_control_ext, s_nr); + + if (cmdrsp == LLC_CMD && pollfinal == 1) { + LLC_INC(linkp->llcl_vr); + llc_send(linkp, LLCFT_RNR, LLC_RSP, 1); + LLC_UPDATE_NR_RECEIVED(linkp,nr); + if (LLC_GETFLAG(linkp,DATA) == 2) + LLC_STOP_REJ_TIMER(linkp); + LLC_SETFLAG(linkp,DATA,0); + action = LLC_DATA_INDICATION; + } else if ((cmdrsp == LLC_CMD && pollfinal == 0 && p == 0) || + (cmdrsp == LLC_RSP && pollfinal == p)) { + LLC_INC(linkp->llcl_vr); + llc_send(linkp, LLCFT_RNR, LLC_CMD, 1); LLC_START_P_TIMER(linkp); - LLC_NEWSTATE(linkp, REJECT); - action = 0; - } else { - llc_send(linkp, LLCFT_RR, LLC_CMD, 0); - LLC_NEWSTATE(linkp, REJECT); - action =0; + LLC_UPDATE_NR_RECEIVED(linkp,nr); + if (LLC_GETFLAG(linkp,DATA) == 2) + LLC_STOP_REJ_TIMER(linkp); + if (cmdrsp == LLC_RSP && pollfinal == 1) + LLC_CLEAR_REMOTE_BUSY(linkp,action); + action = LLC_DATA_INDICATION; + } else if (pollfinal == 0 && p == 1) { + LLC_INC(linkp->llcl_vr); + llc_send(linkp, LLCFT_RNR, LLC_CMD, 0); + LLC_UPDATE_NR_RECEIVED(linkp,nr); + if (LLC_GETFLAG(linkp,DATA) == 2) + LLC_STOP_REJ_TIMER(linkp); + LLC_SETFLAG(linkp,DATA,0); + action = LLC_DATA_INDICATION; } break; } - break; - } - case LLC_INVALID_NS + LLC_CMD: - case LLC_INVALID_NS + LLC_RSP: { - register int p = LLC_GETFLAG(linkp, P); - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - if (cmdrsp == LLC_CMD && pollfinal == 1) { - llc_send(linkp, LLCFT_RNR, LLC_RSP, 1); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - if (LLC_GETFLAG(linkp, DATA) == 0) - LLC_SETFLAG(linkp, DATA, 1); - action = 0; - } else if ((cmdrsp == LLC_CMD && pollfinal == 0 && p == 0) || - (cmdrsp == LLC_RSP && pollfinal == p)) { - llc_send(linkp, LLCFT_RNR, LLC_CMD, 0); - LLC_UPDATE_P_FLAG(linkp, cmdrsp, pollfinal); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - if (LLC_GETFLAG(linkp, DATA) == 0) - LLC_SETFLAG(linkp, DATA, 1); - if (cmdrsp == LLC_RSP && pollfinal == 1) { - LLC_CLEAR_REMOTE_BUSY(linkp, action); - } else action = 0; - } else if (pollfinal == 0 && p == 1) { - llc_send(linkp, LLCFT_RNR, LLC_RSP, 1); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - if (LLC_GETFLAG(linkp, DATA) == 0) - LLC_SETFLAG(linkp, DATA, 1); - action = 0; - } - break; - } - case LLCFT_INFO + LLC_CMD: - case LLCFT_INFO + LLC_RSP: { - register int p = LLC_GETFLAG(linkp, P); - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - if (cmdrsp == LLC_CMD && pollfinal == 1) { - LLC_INC(linkp->llcl_vr); - llc_send(linkp, LLCFT_RNR, LLC_RSP, 1); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - if (LLC_GETFLAG(linkp, DATA) == 2) - LLC_STOP_REJ_TIMER(linkp); - LLC_SETFLAG(linkp, DATA, 0); - action = LLC_DATA_INDICATION; - } else if ((cmdrsp == LLC_CMD && pollfinal == 0 && p == 0) || - (cmdrsp == LLC_RSP && pollfinal == p)) { - LLC_INC(linkp->llcl_vr); - llc_send(linkp, LLCFT_RNR, LLC_CMD, 1); - LLC_START_P_TIMER(linkp); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - if (LLC_GETFLAG(linkp, DATA) == 2) - LLC_STOP_REJ_TIMER(linkp); - if (cmdrsp == LLC_RSP && pollfinal == 1) - LLC_CLEAR_REMOTE_BUSY(linkp, action); - action = LLC_DATA_INDICATION; - } else if (pollfinal == 0 && p == 1) { - LLC_INC(linkp->llcl_vr); - llc_send(linkp, LLCFT_RNR, LLC_CMD, 0); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - if (LLC_GETFLAG(linkp, DATA) == 2) - LLC_STOP_REJ_TIMER(linkp); - LLC_SETFLAG(linkp, DATA, 0); - action = LLC_DATA_INDICATION; - } - break; - } case LLCFT_RR + LLC_CMD: - case LLCFT_RR + LLC_RSP: + case LLCFT_RR + LLC_RSP: case LLCFT_RNR + LLC_CMD: - case LLCFT_RNR + LLC_RSP: { - register int p = LLC_GETFLAG(linkp, P); - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - if (cmdrsp == LLC_CMD && pollfinal == 1) { - llc_send(linkp, LLCFT_RNR, LLC_RSP, 1); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - if (frame_kind == LLCFT_RR) { - LLC_CLEAR_REMOTE_BUSY(linkp, action); - } else { - LLC_SET_REMOTE_BUSY(linkp, action); - } - } else if (pollfinal = 0 || - (cmdrsp == LLC_RSP && pollfinal == 1)) { - LLC_UPDATE_P_FLAG(linkp, cmdrsp, pollfinal); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - if (frame_kind == LLCFT_RR) { - LLC_CLEAR_REMOTE_BUSY(linkp, action); - } else { - LLC_SET_REMOTE_BUSY(linkp, action); + case LLCFT_RNR + LLC_RSP:{ +#if 0 + register int p = LLC_GETFLAG(linkp,P); +#endif + register int nr = + LLCGBITS(frame->llc_control_ext,s_nr); + + if (cmdrsp == LLC_CMD && pollfinal == 1) { + llc_send(linkp, LLCFT_RNR, LLC_RSP, 1); + LLC_UPDATE_NR_RECEIVED(linkp,nr); + if (frame_kind == LLCFT_RR) { + LLC_CLEAR_REMOTE_BUSY(linkp,action); + } else { + LLC_SET_REMOTE_BUSY(linkp,action); + } + } else if (pollfinal == 0 || + (cmdrsp == LLC_RSP && pollfinal == 1)) { + LLC_UPDATE_P_FLAG(linkp,cmdrsp,pollfinal); + LLC_UPDATE_NR_RECEIVED(linkp,nr); + if (frame_kind == LLCFT_RR) { + LLC_CLEAR_REMOTE_BUSY(linkp,action); + } else { + LLC_SET_REMOTE_BUSY(linkp,action); + } } + break; } - break; - } case LLCFT_REJ + LLC_CMD: - case LLCFT_REJ + LLC_RSP: { - register int p = LLC_GETFLAG(linkp, P); - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - if (cmdrsp == LLC_CMD && pollfinal == 1) { - linkp->llcl_vs = nr; - LLC_UPDATE_NR_RECEIVED(linkp, nr); - llc_send(linkp, LLCFT_RNR, LLC_RSP, 1); - llc_resend(linkp, LLC_CMD, 0); - LLC_CLEAR_REMOTE_BUSY(linkp, action); - } else if ((cmdrsp == LLC_CMD && pollfinal == 0 && p == 0) || - (cmdrsp == LLC_RSP && pollfinal == p)) { - linkp->llcl_vs = nr; - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_UPDATE_P_FLAG(linkp, cmdrsp, pollfinal); - llc_resend(linkp, LLC_CMD, 0); - LLC_CLEAR_REMOTE_BUSY(linkp, action); - } else if (pollfinal == 0 && p == 1) { - linkp->llcl_vs = nr; - LLC_UPDATE_NR_RECEIVED(linkp, nr); - llc_resend(linkp, LLC_CMD, 0); - LLC_CLEAR_REMOTE_BUSY(linkp, action); + case LLCFT_REJ + LLC_RSP:{ + register int p = LLC_GETFLAG(linkp,P); + register int nr = + LLCGBITS(frame->llc_control_ext,s_nr); + + if (cmdrsp == LLC_CMD && pollfinal == 1) { + linkp->llcl_vs = nr; + LLC_UPDATE_NR_RECEIVED(linkp,nr); + llc_send(linkp, LLCFT_RNR, LLC_RSP, 1); + llc_resend(linkp, LLC_CMD, 0); + LLC_CLEAR_REMOTE_BUSY(linkp,action); + } else if ((cmdrsp == LLC_CMD && pollfinal == 0 && + p == 0) || + (cmdrsp == LLC_RSP && pollfinal == p)) { + linkp->llcl_vs = nr; + LLC_UPDATE_NR_RECEIVED(linkp,nr); + LLC_UPDATE_P_FLAG(linkp,cmdrsp,pollfinal); + llc_resend(linkp, LLC_CMD, 0); + LLC_CLEAR_REMOTE_BUSY(linkp,action); + } else if (pollfinal == 0 && p == 1) { + linkp->llcl_vs = nr; + LLC_UPDATE_NR_RECEIVED(linkp,nr); + llc_resend(linkp, LLC_CMD, 0); + LLC_CLEAR_REMOTE_BUSY(linkp,action); + } + break; } - break; - } case NL_INITIATE_PF_CYCLE: - if (LLC_GETFLAG(linkp, P) == 0) { + if (LLC_GETFLAG(linkp,P) == 0) { llc_send(linkp, LLCFT_RNR, LLC_CMD, 1); LLC_START_P_TIMER(linkp); action = 0; @@ -1260,40 +1360,40 @@ llc_state_BUSY(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, llc_send(linkp, LLCFT_RNR, LLC_CMD, 1); LLC_START_P_TIMER(linkp); linkp->llcl_retry++; - LLC_NEWSTATE(linkp, AWAIT_BUSY); + LLC_NEWSTATE(linkp,AWAIT_BUSY); action = 0; } break; case LLC_ACK_TIMER_EXPIRED: case LLC_BUSY_TIMER_EXPIRED: - if (LLC_GETFLAG(linkp, P) == 0 && linkp->llcl_retry < llc_n2) { + if (LLC_GETFLAG(linkp,P) == 0 && linkp->llcl_retry < llc_n2) { llc_send(linkp, LLCFT_RNR, LLC_CMD, 1); LLC_START_P_TIMER(linkp); linkp->llcl_retry++; - LLC_NEWSTATE(linkp, AWAIT_BUSY); + LLC_NEWSTATE(linkp,AWAIT_BUSY); action = 0; } break; case LLC_REJ_TIMER_EXPIRED: - if (linkp->llcl_retry < llc_n2) - if (LLC_GETFLAG(linkp, P) == 0) { + if (linkp->llcl_retry < llc_n2) + if (LLC_GETFLAG(linkp,P) == 0) { /* multiple possibilities */ llc_send(linkp, LLCFT_RNR, LLC_CMD, 1); LLC_START_P_TIMER(linkp); linkp->llcl_retry++; - LLC_SETFLAG(linkp, DATA, 1); - LLC_NEWSTATE(linkp, AWAIT_BUSY); + LLC_SETFLAG(linkp,DATA,1); + LLC_NEWSTATE(linkp,AWAIT_BUSY); action = 0; - } else{ - LLC_SETFLAG(linkp, DATA, 1); - LLC_NEWSTATE(linkp, BUSY); + } else { + LLC_SETFLAG(linkp,DATA,1); + LLC_NEWSTATE(linkp,BUSY); action = 0; } - + break; } if (action == LLC_PASSITON) - action = llc_state_NBRAcore(linkp, frame, frame_kind, + action = llc_state_NBRAcore(linkp, frame, frame_kind, cmdrsp, pollfinal); return action; @@ -1306,163 +1406,168 @@ llc_state_BUSY(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, * component resend a specific I PDU that the local connection * componnent has detected as being out of sequence. Both I PDUs and * supervisory PDUs may be sent and received. - */ + */ int -llc_state_REJECT(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, - int cmdrsp, int pollfinal) +llc_state_REJECT(linkp, frame, frame_kind, cmdrsp, pollfinal) + struct llc_linkcb *linkp; + struct llc *frame; + int frame_kind; + int cmdrsp; + int pollfinal; { - int action = LLC_PASSITON; + int action = LLC_PASSITON; - switch(frame_kind + cmdrsp) { + switch (frame_kind + cmdrsp) { case NL_DATA_REQUEST: - if (LLC_GETFLAG(linkp, P) == 0) { + if (LLC_GETFLAG(linkp,P) == 0) { llc_send(linkp, LLCFT_INFO, LLC_CMD, 1); LLC_START_P_TIMER(linkp); - if (LLC_TIMERXPIRED(linkp, ACK) != LLC_TIMER_RUNNING) + if (LLC_TIMERXPIRED(linkp,ACK) != LLC_TIMER_RUNNING) LLC_START_ACK_TIMER(linkp); - LLC_NEWSTATE(linkp, REJECT); + LLC_NEWSTATE(linkp,REJECT); action = 0; - } else { + } else { llc_send(linkp, LLCFT_INFO, LLC_CMD, 0); - if (LLC_TIMERXPIRED(linkp, ACK) != LLC_TIMER_RUNNING) + if (LLC_TIMERXPIRED(linkp,ACK) != LLC_TIMER_RUNNING) LLC_START_ACK_TIMER(linkp); - LLC_NEWSTATE(linkp, REJECT); + LLC_NEWSTATE(linkp,REJECT); action = 0; } break; case NL_LOCAL_BUSY_DETECTED: - if (LLC_GETFLAG(linkp, P) == 0) { + if (LLC_GETFLAG(linkp,P) == 0) { llc_send(linkp, LLCFT_RNR, LLC_CMD, 1); LLC_START_P_TIMER(linkp); - LLC_SETFLAG(linkp, DATA, 2); - LLC_NEWSTATE(linkp, BUSY); + LLC_SETFLAG(linkp,DATA,2); + LLC_NEWSTATE(linkp,BUSY); action = 0; } else { llc_send(linkp, LLCFT_RNR, LLC_CMD, 0); - LLC_SETFLAG(linkp, DATA, 2); - LLC_NEWSTATE(linkp, BUSY); + LLC_SETFLAG(linkp,DATA,2); + LLC_NEWSTATE(linkp,BUSY); action = 0; } break; case LLC_INVALID_NS + LLC_CMD: - case LLC_INVALID_NS + LLC_RSP: { - register int p = LLC_GETFLAG(linkp, P); - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); + case LLC_INVALID_NS + LLC_RSP:{ + register int p = LLC_GETFLAG(linkp,P); + register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - if (cmdrsp == LLC_CMD && pollfinal == 1) { - llc_send(linkp, LLCFT_RR, LLC_RSP, 1); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - action = 0; - } else if (pollfinal == 0 || - (cmdrsp == LLC_RSP && pollfinal == 1 && p == 1)) { - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_UPDATE_P_FLAG(linkp, cmdrsp, pollfinal); - if (cmdrsp == LLC_RSP && pollfinal == 1) { - LLC_CLEAR_REMOTE_BUSY(linkp, action); - } else action = 0; + if (cmdrsp == LLC_CMD && pollfinal == 1) { + llc_send(linkp, LLCFT_RR, LLC_RSP, 1); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + action = 0; + } else if (pollfinal == 0 || + (cmdrsp == LLC_RSP && pollfinal == 1 && p == 1)) { + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_UPDATE_P_FLAG(linkp, cmdrsp, pollfinal); + if (cmdrsp == LLC_RSP && pollfinal == 1) { + LLC_CLEAR_REMOTE_BUSY(linkp, action); + } else + action = 0; + } + break; } - break; - } case LLCFT_INFO + LLC_CMD: - case LLCFT_INFO + LLC_RSP: { - register int p = LLC_GETFLAG(linkp, P); - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - if (cmdrsp == LLC_CMD && pollfinal == 1) { - LLC_INC(linkp->llcl_vr); - LLC_SENDACKNOWLEDGE(linkp, LLC_RSP, 1); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_STOP_REJ_TIMER(linkp); - LLC_NEWSTATE(linkp, NORMAL); - action = LLC_DATA_INDICATION; - } else if ((cmdrsp = LLC_RSP && pollfinal == p) || - (cmdrsp == LLC_CMD && pollfinal == 0 && p == 0)) { - LLC_INC(linkp->llcl_vr); - LLC_SENDACKNOWLEDGE(linkp, LLC_CMD, 1); - LLC_START_P_TIMER(linkp); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - if (cmdrsp == LLC_RSP && pollfinal == 1) - LLC_CLEAR_REMOTE_BUSY(linkp, action); - LLC_STOP_REJ_TIMER(linkp); - LLC_NEWSTATE(linkp, NORMAL); - action = LLC_DATA_INDICATION; - } else if (pollfinal == 0 && p == 1) { - LLC_INC(linkp->llcl_vr); - LLC_SENDACKNOWLEDGE(linkp, LLC_CMD, 0); - LLC_STOP_REJ_TIMER(linkp); - LLC_NEWSTATE(linkp, NORMAL); - action = LLC_DATA_INDICATION; + case LLCFT_INFO + LLC_RSP:{ + register int p = LLC_GETFLAG(linkp,P); + register int nr = LLCGBITS(frame->llc_control_ext, s_nr); + + if (cmdrsp == LLC_CMD && pollfinal == 1) { + LLC_INC(linkp->llcl_vr); + LLC_SENDACKNOWLEDGE(linkp, LLC_RSP, 1); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_STOP_REJ_TIMER(linkp); + LLC_NEWSTATE(linkp,NORMAL); + action = LLC_DATA_INDICATION; + } else if ((cmdrsp = LLC_RSP && pollfinal == p) || + (cmdrsp == LLC_CMD && pollfinal == 0 && p == 0)) { + LLC_INC(linkp->llcl_vr); + LLC_SENDACKNOWLEDGE(linkp, LLC_CMD, 1); + LLC_START_P_TIMER(linkp); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + if (cmdrsp == LLC_RSP && pollfinal == 1) + LLC_CLEAR_REMOTE_BUSY(linkp, action); + LLC_STOP_REJ_TIMER(linkp); + LLC_NEWSTATE(linkp,NORMAL); + action = LLC_DATA_INDICATION; + } else if (pollfinal == 0 && p == 1) { + LLC_INC(linkp->llcl_vr); + LLC_SENDACKNOWLEDGE(linkp, LLC_CMD, 0); + LLC_STOP_REJ_TIMER(linkp); + LLC_NEWSTATE(linkp,NORMAL); + action = LLC_DATA_INDICATION; + } + break; } - break; - } case LLCFT_RR + LLC_CMD: - case LLCFT_RR + LLC_RSP: { - register int p = LLC_GETFLAG(linkp, P); - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - if (cmdrsp == LLC_CMD && pollfinal == 1) { - LLC_SENDACKNOWLEDGE(linkp, LLC_RSP, 1); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_CLEAR_REMOTE_BUSY(linkp, action); - } else if (pollfinal == 0 || - (cmdrsp == LLC_RSP && pollfinal == 1 && p == 1)) { - LLC_UPDATE_P_FLAG(linkp, cmdrsp, pollfinal); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_CLEAR_REMOTE_BUSY(linkp, action); + case LLCFT_RR + LLC_RSP:{ + register int p = LLC_GETFLAG(linkp,P); + register int nr = LLCGBITS(frame->llc_control_ext, s_nr); + + if (cmdrsp == LLC_CMD && pollfinal == 1) { + LLC_SENDACKNOWLEDGE(linkp, LLC_RSP, 1); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_CLEAR_REMOTE_BUSY(linkp, action); + } else if (pollfinal == 0 || + (cmdrsp == LLC_RSP && pollfinal == 1 && p == 1)) { + LLC_UPDATE_P_FLAG(linkp, cmdrsp, pollfinal); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_CLEAR_REMOTE_BUSY(linkp, action); + } + break; } - break; - } case LLCFT_RNR + LLC_CMD: - case LLCFT_RNR + LLC_RSP: { - register int p = LLC_GETFLAG(linkp, P); - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - if (cmdrsp == LLC_CMD && pollfinal == 1) { - llc_send(linkp, LLCFT_RR, LLC_RSP, 1); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_SET_REMOTE_BUSY(linkp, action); - } else if (pollfinal == 0 || - (cmdrsp == LLC_RSP && pollfinal == 1 && p == 1)) { - LLC_UPDATE_P_FLAG(linkp, cmdrsp, pollfinal); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - action = 0; + case LLCFT_RNR + LLC_RSP:{ + register int p = LLC_GETFLAG(linkp,P); + register int nr = LLCGBITS(frame->llc_control_ext, s_nr); + + if (cmdrsp == LLC_CMD && pollfinal == 1) { + llc_send(linkp, LLCFT_RR, LLC_RSP, 1); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_SET_REMOTE_BUSY(linkp,action); + } else if (pollfinal == 0 || + (cmdrsp == LLC_RSP && pollfinal == 1 && p == 1)) { + LLC_UPDATE_P_FLAG(linkp, cmdrsp, pollfinal); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + action = 0; + } + break; } - break; - } case LLCFT_REJ + LLC_CMD: - case LLCFT_REJ + LLC_RSP: { - register int p = LLC_GETFLAG(linkp, P); - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - if (cmdrsp == LLC_CMD && pollfinal == 1) { - linkp->llcl_vs = nr; - LLC_UPDATE_NR_RECEIVED(linkp, nr); - llc_resend(linkp, LLC_RSP, 1); - LLC_CLEAR_REMOTE_BUSY(linkp, action); - } else if ((cmdrsp == LLC_CMD && pollfinal == 0 && p == 0) || - (cmdrsp == LLC_RSP && pollfinal == p)) { - linkp->llcl_vs = nr; - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_UPDATE_P_FLAG(linkp, cmdrsp, pollfinal); - llc_resend(linkp, LLC_CMD, 0); - LLC_CLEAR_REMOTE_BUSY(linkp, action); - } else if (pollfinal == 0 && p == 1) { - linkp->llcl_vs = nr; - LLC_UPDATE_NR_RECEIVED(linkp, nr); - llc_resend(linkp, LLC_CMD, 0); - LLC_CLEAR_REMOTE_BUSY(linkp, action); + case LLCFT_REJ + LLC_RSP:{ + register int p = LLC_GETFLAG(linkp,P); + register int nr = LLCGBITS(frame->llc_control_ext, s_nr); + + if (cmdrsp == LLC_CMD && pollfinal == 1) { + linkp->llcl_vs = nr; + LLC_UPDATE_NR_RECEIVED(linkp, nr); + llc_resend(linkp, LLC_RSP, 1); + LLC_CLEAR_REMOTE_BUSY(linkp, action); + } else if ((cmdrsp == LLC_CMD && pollfinal == 0 && p == 0) || + (cmdrsp == LLC_RSP && pollfinal == p)) { + linkp->llcl_vs = nr; + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_UPDATE_P_FLAG(linkp, cmdrsp, pollfinal); + llc_resend(linkp, LLC_CMD, 0); + LLC_CLEAR_REMOTE_BUSY(linkp, action); + } else if (pollfinal == 0 && p == 1) { + linkp->llcl_vs = nr; + LLC_UPDATE_NR_RECEIVED(linkp, nr); + llc_resend(linkp, LLC_CMD, 0); + LLC_CLEAR_REMOTE_BUSY(linkp, action); + } + break; } - break; - } case NL_INITIATE_PF_CYCLE: - if (LLC_GETFLAG(linkp, P) == 0) { + if (LLC_GETFLAG(linkp,P) == 0) { llc_send(linkp, LLCFT_RR, LLC_CMD, 1); LLC_START_P_TIMER(linkp); action = 0; } break; case LLC_REJ_TIMER_EXPIRED: - if (LLC_GETFLAG(linkp, P) == 0 && linkp->llcl_retry < llc_n2) { + if (LLC_GETFLAG(linkp,P) == 0 && linkp->llcl_retry < llc_n2) { llc_send(linkp, LLCFT_REJ, LLC_CMD, 1); LLC_START_P_TIMER(linkp); LLC_START_REJ_TIMER(linkp); @@ -1475,31 +1580,30 @@ llc_state_REJECT(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, LLC_START_P_TIMER(linkp); LLC_START_REJ_TIMER(linkp); linkp->llcl_retry++; - LLC_NEWSTATE(linkp, AWAIT_REJECT); + LLC_NEWSTATE(linkp,AWAIT_REJECT); action = 0; } break; case LLC_ACK_TIMER_EXPIRED: case LLC_BUSY_TIMER_EXPIRED: - if (LLC_GETFLAG(linkp, P) == 0 && linkp->llcl_retry < llc_n2) { + if (LLC_GETFLAG(linkp,P) == 0 && linkp->llcl_retry < llc_n2) { llc_send(linkp, LLCFT_RR, LLC_CMD, 1); LLC_START_P_TIMER(linkp); LLC_START_REJ_TIMER(linkp); linkp->llcl_retry++; - /* - * I cannot locate the description of RESET_V(S) - * in ISO 8802-2, table 7-1, state REJECT, last event, + /* + * I cannot locate the description of RESET_V(S) in + * ISO 8802-2, table 7-1, state REJECT, last event, * and assume they meant to set V(S) to 0 ... */ - linkp->llcl_vs = 0; /* XXX */ - LLC_NEWSTATE(linkp, AWAIT_REJECT); + linkp->llcl_vs = 0; /* XXX */ + LLC_NEWSTATE(linkp,AWAIT_REJECT); action = 0; } - break; } if (action == LLC_PASSITON) - action = llc_state_NBRAcore(linkp, frame, frame_kind, + action = llc_state_NBRAcore(linkp, frame, frame_kind, cmdrsp, pollfinal); return action; @@ -1514,117 +1618,129 @@ llc_state_REJECT(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, * Supervisory PDUs may be both sent and received. */ int -llc_state_AWAIT(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, - int cmdrsp, int pollfinal) +llc_state_AWAIT(linkp, frame, frame_kind, cmdrsp, pollfinal) + struct llc_linkcb *linkp; + struct llc *frame; + int frame_kind; + int cmdrsp; + int pollfinal; { - int action = LLC_PASSITON; + int action = LLC_PASSITON; - switch(frame_kind + cmdrsp) { + switch (frame_kind + cmdrsp) { case LLC_LOCAL_BUSY_DETECTED: llc_send(linkp, LLCFT_RNR, LLC_CMD, 0); - LLC_SETFLAG(linkp, DATA, 0); - LLC_NEWSTATE(linkp, AWAIT_BUSY); + LLC_SETFLAG(linkp,DATA,0); + LLC_NEWSTATE(linkp,AWAIT_BUSY); action = 0; break; case LLC_INVALID_NS + LLC_CMD: - case LLC_INVALID_NS + LLC_RSP: { - register int p = LLC_GETFLAG(linkp, P); - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - if (cmdrsp == LLC_CMD && pollfinal == 1) { - llc_send(linkp, LLCFT_REJ, LLC_RSP, 1); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_START_REJ_TIMER(linkp); - LLC_NEWSTATE(linkp, AWAIT_REJECT); - action = 0; - } else if (cmdrsp == LLC_RSP && pollfinal == 1) { - llc_send(linkp, LLCFT_REJ, LLC_CMD, 0); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - linkp->llcl_vs = nr; - LLC_STOP_P_TIMER(linkp); - llc_resend(linkp, LLC_CMD, 0); - LLC_START_REJ_TIMER(linkp); - LLC_CLEAR_REMOTE_BUSY(linkp, action); - LLC_NEWSTATE(linkp, REJECT); - } else if (pollfinal == 0) { - llc_send(linkp, LLCFT_REJ, LLC_CMD, 0); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_START_REJ_TIMER(linkp); - LLC_NEWSTATE(linkp, AWAIT_REJECT); - action = 0; + case LLC_INVALID_NS + LLC_RSP:{ +#if 0 + register int p = LLC_GETFLAG(linkp,P); +#endif + register int nr = LLCGBITS(frame->llc_control_ext, s_nr); + + if (cmdrsp == LLC_CMD && pollfinal == 1) { + llc_send(linkp, LLCFT_REJ, LLC_RSP, 1); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_START_REJ_TIMER(linkp); + LLC_NEWSTATE(linkp,AWAIT_REJECT); + action = 0; + } else if (cmdrsp == LLC_RSP && pollfinal == 1) { + llc_send(linkp, LLCFT_REJ, LLC_CMD, 0); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + linkp->llcl_vs = nr; + LLC_STOP_P_TIMER(linkp); + llc_resend(linkp, LLC_CMD, 0); + LLC_START_REJ_TIMER(linkp); + LLC_CLEAR_REMOTE_BUSY(linkp, action); + LLC_NEWSTATE(linkp,REJECT); + } else if (pollfinal == 0) { + llc_send(linkp, LLCFT_REJ, LLC_CMD, 0); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_START_REJ_TIMER(linkp); + LLC_NEWSTATE(linkp,AWAIT_REJECT); + action = 0; + } + break; } - break; - } case LLCFT_INFO + LLC_RSP: - case LLCFT_INFO + LLC_CMD: { - register int p = LLC_GETFLAG(linkp, P); - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - LLC_INC(linkp->llcl_vr); - if (cmdrsp == LLC_CMD && pollfinal == 1) { - llc_send(linkp, LLCFT_RR, LLC_RSP, 1); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - action = LLC_DATA_INDICATION; - } else if (cmdrsp == LLC_RSP && pollfinal == 1) { - LLC_UPDATE_NR_RECEIVED(linkp, nr); - linkp->llcl_vs = nr; - llc_resend(linkp, LLC_CMD, 1); - LLC_START_P_TIMER(linkp); - LLC_CLEAR_REMOTE_BUSY(linkp, action); - LLC_NEWSTATE(linkp, NORMAL); - action = LLC_DATA_INDICATION; - } else if (pollfinal == 0) { - llc_send(linkp, LLCFT_RR, LLC_CMD, 0); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - action = LLC_DATA_INDICATION; + case LLCFT_INFO + LLC_CMD:{ +#if 0 + register int p = LLC_GETFLAG(linkp,P); +#endif + register int nr = LLCGBITS(frame->llc_control_ext, s_nr); + + LLC_INC(linkp->llcl_vr); + if (cmdrsp == LLC_CMD && pollfinal == 1) { + llc_send(linkp, LLCFT_RR, LLC_RSP, 1); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + action = LLC_DATA_INDICATION; + } else if (cmdrsp == LLC_RSP && pollfinal == 1) { + LLC_UPDATE_NR_RECEIVED(linkp, nr); + linkp->llcl_vs = nr; + llc_resend(linkp, LLC_CMD, 1); + LLC_START_P_TIMER(linkp); + LLC_CLEAR_REMOTE_BUSY(linkp, action); + LLC_NEWSTATE(linkp,NORMAL); + action = LLC_DATA_INDICATION; + } else if (pollfinal == 0) { + llc_send(linkp, LLCFT_RR, LLC_CMD, 0); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + action = LLC_DATA_INDICATION; + } + break; } - break; - } case LLCFT_RR + LLC_CMD: case LLCFT_RR + LLC_RSP: case LLCFT_REJ + LLC_CMD: - case LLCFT_REJ + LLC_RSP: { - register int p = LLC_GETFLAG(linkp, P); - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - if (cmdrsp == LLC_CMD && pollfinal == 1) { - llc_send(linkp, LLCFT_RR, LLC_RSP, 1); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_CLEAR_REMOTE_BUSY(linkp, action); - } else if (cmdrsp == LLC_RSP && pollfinal == 1) { - LLC_UPDATE_NR_RECEIVED(linkp, nr); - linkp->llcl_vs = nr; - LLC_STOP_P_TIMER(linkp); - llc_resend(linkp, LLC_CMD, 0); - LLC_CLEAR_REMOTE_BUSY(linkp, action); - LLC_NEWSTATE(linkp, NORMAL); - } else if (pollfinal == 0) { - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_CLEAR_REMOTE_BUSY(linkp, action); - } - break; - } + case LLCFT_REJ + LLC_RSP:{ +#if 0 + register int p = LLC_GETFLAG(linkp,P); +#endif + register int nr = LLCGBITS(frame->llc_control_ext, s_nr); + + if (cmdrsp == LLC_CMD && pollfinal == 1) { + llc_send(linkp, LLCFT_RR, LLC_RSP, 1); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_CLEAR_REMOTE_BUSY(linkp, action); + } else if (cmdrsp == LLC_RSP && pollfinal == 1) { + LLC_UPDATE_NR_RECEIVED(linkp, nr); + linkp->llcl_vs = nr; + LLC_STOP_P_TIMER(linkp); + llc_resend(linkp, LLC_CMD, 0); + LLC_CLEAR_REMOTE_BUSY(linkp, action); + LLC_NEWSTATE(linkp,NORMAL); + } else if (pollfinal == 0) { + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_CLEAR_REMOTE_BUSY(linkp, action); + } + break; + } case LLCFT_RNR + LLC_CMD: - case LLCFT_RNR + LLC_RSP: { - register int p = LLC_GETFLAG(linkp, P); - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - if (pollfinal == 1 && cmdrsp == LLC_CMD) { - llc_send(linkp, LLCFT_RR, LLC_RSP, 1); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_SET_REMOTE_BUSY(linkp, action); - } else if (pollfinal == 1 && cmdrsp == LLC_RSP) { - LLC_UPDATE_NR_RECEIVED(linkp, nr); - linkp->llcl_vs = nr; - LLC_STOP_P_TIMER(linkp); - LLC_SET_REMOTE_BUSY(linkp, action); - LLC_NEWSTATE(linkp, NORMAL); - } else if (pollfinal == 0) { - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_SET_REMOTE_BUSY(linkp, action); + case LLCFT_RNR + LLC_RSP:{ +#if 0 + register int p = LLC_GETFLAG(linkp,P); +#endif + register int nr = LLCGBITS(frame->llc_control_ext, s_nr); + + if (pollfinal == 1 && cmdrsp == LLC_CMD) { + llc_send(linkp, LLCFT_RR, LLC_RSP, 1); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_SET_REMOTE_BUSY(linkp,action); + } else if (pollfinal == 1 && cmdrsp == LLC_RSP) { + LLC_UPDATE_NR_RECEIVED(linkp, nr); + linkp->llcl_vs = nr; + LLC_STOP_P_TIMER(linkp); + LLC_SET_REMOTE_BUSY(linkp,action); + LLC_NEWSTATE(linkp,NORMAL); + } else if (pollfinal == 0) { + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_SET_REMOTE_BUSY(linkp,action); + } + break; } - break; - } case LLC_P_TIMER_EXPIRED: if (linkp->llcl_retry < llc_n2) { llc_send(linkp, LLCFT_RR, LLC_CMD, 1); @@ -1635,7 +1751,7 @@ llc_state_AWAIT(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, break; } if (action == LLC_PASSITON) - action = llc_state_NBRAcore(linkp, frame, frame_kind, + action = llc_state_NBRAcore(linkp, frame, frame_kind, cmdrsp, pollfinal); return action; @@ -1652,139 +1768,151 @@ llc_state_AWAIT(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, * Supervisory PDUs may be both sent and received. */ int -llc_state_AWAIT_BUSY(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, - int cmdrsp, int pollfinal) +llc_state_AWAIT_BUSY(linkp, frame, frame_kind, cmdrsp, pollfinal) + struct llc_linkcb *linkp; + struct llc *frame; + int frame_kind; + int cmdrsp; + int pollfinal; { - int action = LLC_PASSITON; + int action = LLC_PASSITON; - switch(frame_kind + cmdrsp) { + switch (frame_kind + cmdrsp) { case LLC_LOCAL_BUSY_CLEARED: - switch (LLC_GETFLAG(linkp, DATA)) { + switch (LLC_GETFLAG(linkp,DATA)) { case 1: llc_send(linkp, LLCFT_REJ, LLC_CMD, 0); LLC_START_REJ_TIMER(linkp); - LLC_NEWSTATE(linkp, AWAIT_REJECT); + LLC_NEWSTATE(linkp,AWAIT_REJECT); action = 0; break; case 0: llc_send(linkp, LLCFT_RR, LLC_CMD, 0); - LLC_NEWSTATE(linkp, AWAIT); + LLC_NEWSTATE(linkp,AWAIT); action = 0; break; case 2: llc_send(linkp, LLCFT_RR, LLC_CMD, 0); - LLC_NEWSTATE(linkp, AWAIT_REJECT); + LLC_NEWSTATE(linkp,AWAIT_REJECT); action = 0; break; } break; case LLC_INVALID_NS + LLC_CMD: - case LLC_INVALID_NS + LLC_RSP: { - register int p = LLC_GETFLAG(linkp, P); - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - if (cmdrsp == LLC_CMD && pollfinal == 1) { - llc_send(linkp, LLCFT_RNR, LLC_RSP, 1); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_SETFLAG(linkp, DATA, 1); - action = 0; - } else if (cmdrsp == LLC_RSP && pollfinal == 1) { - /* optionally */ - llc_send(linkp, LLCFT_RNR, LLC_CMD, 0); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - linkp->llcl_vs = nr; - LLC_STOP_P_TIMER(linkp); - LLC_SETFLAG(linkp, DATA, 1); - LLC_CLEAR_REMOTE_BUSY(linkp, action); - llc_resend(linkp, LLC_CMD, 0); - LLC_NEWSTATE(linkp, BUSY); - } else if (pollfinal == 0) { - /* optionally */ - llc_send(linkp, LLCFT_RNR, LLC_CMD, 0); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_SETFLAG(linkp, DATA, 1); - action = 0; + case LLC_INVALID_NS + LLC_RSP:{ +#if 0 + register int p = LLC_GETFLAG(linkp,P); +#endif + register int nr = LLCGBITS(frame->llc_control_ext, s_nr); + + if (cmdrsp == LLC_CMD && pollfinal == 1) { + llc_send(linkp, LLCFT_RNR, LLC_RSP, 1); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_SETFLAG(linkp,DATA,1); + action = 0; + } else if (cmdrsp == LLC_RSP && pollfinal == 1) { + /* optionally */ + llc_send(linkp, LLCFT_RNR, LLC_CMD, 0); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + linkp->llcl_vs = nr; + LLC_STOP_P_TIMER(linkp); + LLC_SETFLAG(linkp,DATA,1); + LLC_CLEAR_REMOTE_BUSY(linkp, action); + llc_resend(linkp, LLC_CMD, 0); + LLC_NEWSTATE(linkp,BUSY); + } else if (pollfinal == 0) { + /* optionally */ + llc_send(linkp, LLCFT_RNR, LLC_CMD, 0); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_SETFLAG(linkp,DATA,1); + action = 0; + } } - } case LLCFT_INFO + LLC_CMD: - case LLCFT_INFO + LLC_RSP: { - register int p = LLC_GETFLAG(linkp, P); - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - if (cmdrsp == LLC_CMD && pollfinal == 1) { - llc_send(linkp, LLCFT_RNR, LLC_RSP, 1); - LLC_INC(linkp->llcl_vr); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_SETFLAG(linkp, DATA, 0); - action = LLC_DATA_INDICATION; - } else if (cmdrsp == LLC_RSP && pollfinal == 1) { - llc_send(linkp, LLCFT_RNR, LLC_CMD, 1); - LLC_INC(linkp->llcl_vr); - LLC_START_P_TIMER(linkp); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - linkp->llcl_vs = nr; - LLC_SETFLAG(linkp, DATA, 0); - LLC_CLEAR_REMOTE_BUSY(linkp, action); - llc_resend(linkp, LLC_CMD, 0); - LLC_NEWSTATE(linkp, BUSY); - action = LLC_DATA_INDICATION; - } else if (pollfinal == 0) { - llc_send(linkp, LLCFT_RNR, LLC_CMD, 0); - LLC_INC(linkp->llcl_vr); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_SETFLAG(linkp, DATA, 0); - action = LLC_DATA_INDICATION; + case LLCFT_INFO + LLC_RSP:{ +#if 0 + register int p = LLC_GETFLAG(linkp,P); +#endif + register int nr = LLCGBITS(frame->llc_control_ext, s_nr); + + if (cmdrsp == LLC_CMD && pollfinal == 1) { + llc_send(linkp, LLCFT_RNR, LLC_RSP, 1); + LLC_INC(linkp->llcl_vr); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_SETFLAG(linkp,DATA,0); + action = LLC_DATA_INDICATION; + } else if (cmdrsp == LLC_RSP && pollfinal == 1) { + llc_send(linkp, LLCFT_RNR, LLC_CMD, 1); + LLC_INC(linkp->llcl_vr); + LLC_START_P_TIMER(linkp); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + linkp->llcl_vs = nr; + LLC_SETFLAG(linkp,DATA,0); + LLC_CLEAR_REMOTE_BUSY(linkp, action); + llc_resend(linkp, LLC_CMD, 0); + LLC_NEWSTATE(linkp,BUSY); + action = LLC_DATA_INDICATION; + } else if (pollfinal == 0) { + llc_send(linkp, LLCFT_RNR, LLC_CMD, 0); + LLC_INC(linkp->llcl_vr); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_SETFLAG(linkp,DATA,0); + action = LLC_DATA_INDICATION; + } + break; } - break; - } case LLCFT_RR + LLC_CMD: case LLCFT_REJ + LLC_CMD: case LLCFT_RR + LLC_RSP: - case LLCFT_REJ + LLC_RSP: { - register int p = LLC_GETFLAG(linkp, P); - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - if (cmdrsp == LLC_CMD && pollfinal == 1) { - llc_send(linkp, LLCFT_RNR, LLC_RSP, 1); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_CLEAR_REMOTE_BUSY(linkp, action); - } else if (cmdrsp == LLC_RSP && pollfinal == 1) { - LLC_UPDATE_NR_RECEIVED(linkp, nr); - linkp->llcl_vs = nr; - LLC_STOP_P_TIMER(linkp); - llc_resend(linkp, LLC_CMD, 0); - LLC_CLEAR_REMOTE_BUSY(linkp, action); - LLC_NEWSTATE(linkp, BUSY); - } else if (pollfinal == 0) { - LLC_UPDATE_NR_RECEIVED(linkp, nr); - linkp->llcl_vs = nr; - LLC_STOP_P_TIMER(linkp); - llc_resend(linkp, LLC_CMD, 0); - LLC_CLEAR_REMOTE_BUSY(linkp, action); + case LLCFT_REJ + LLC_RSP:{ +#if 0 + register int p = LLC_GETFLAG(linkp,P); +#endif + register int nr = LLCGBITS(frame->llc_control_ext, s_nr); + + if (cmdrsp == LLC_CMD && pollfinal == 1) { + llc_send(linkp, LLCFT_RNR, LLC_RSP, 1); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_CLEAR_REMOTE_BUSY(linkp, action); + } else if (cmdrsp == LLC_RSP && pollfinal == 1) { + LLC_UPDATE_NR_RECEIVED(linkp, nr); + linkp->llcl_vs = nr; + LLC_STOP_P_TIMER(linkp); + llc_resend(linkp, LLC_CMD, 0); + LLC_CLEAR_REMOTE_BUSY(linkp, action); + LLC_NEWSTATE(linkp,BUSY); + } else if (pollfinal == 0) { + LLC_UPDATE_NR_RECEIVED(linkp, nr); + linkp->llcl_vs = nr; + LLC_STOP_P_TIMER(linkp); + llc_resend(linkp, LLC_CMD, 0); + LLC_CLEAR_REMOTE_BUSY(linkp, action); + } + break; } - break; - } case LLCFT_RNR + LLC_CMD: - case LLCFT_RNR + LLC_RSP: { - register int p = LLC_GETFLAG(linkp, P); - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - if (cmdrsp == LLC_CMD && pollfinal == 1) { - llc_send(linkp, LLCFT_RNR, LLC_RSP, 1); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_SET_REMOTE_BUSY(linkp, action); - } else if (cmdrsp == LLC_RSP && pollfinal == 1) { - LLC_UPDATE_NR_RECEIVED(linkp, nr); - linkp->llcl_vs = nr; - LLC_STOP_P_TIMER(linkp); - LLC_SET_REMOTE_BUSY(linkp, action); - LLC_NEWSTATE(linkp, BUSY); - } else if (pollfinal == 0) { - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_SET_REMOTE_BUSY(linkp, action); + case LLCFT_RNR + LLC_RSP:{ +#if 0 + register int p = LLC_GETFLAG(linkp,P); +#endif + register int nr = LLCGBITS(frame->llc_control_ext, s_nr); + + if (cmdrsp == LLC_CMD && pollfinal == 1) { + llc_send(linkp, LLCFT_RNR, LLC_RSP, 1); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_SET_REMOTE_BUSY(linkp,action); + } else if (cmdrsp == LLC_RSP && pollfinal == 1) { + LLC_UPDATE_NR_RECEIVED(linkp, nr); + linkp->llcl_vs = nr; + LLC_STOP_P_TIMER(linkp); + LLC_SET_REMOTE_BUSY(linkp,action); + LLC_NEWSTATE(linkp,BUSY); + } else if (pollfinal == 0) { + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_SET_REMOTE_BUSY(linkp,action); + } + break; } - break; - } case LLC_P_TIMER_EXPIRED: if (linkp->llcl_retry < llc_n2) { llc_send(linkp, LLCFT_RNR, LLC_CMD, 1); @@ -1795,7 +1923,7 @@ llc_state_AWAIT_BUSY(struct llc_linkcb *linkp, struct llc *frame, int frame_kind break; } if (action == LLC_PASSITON) - action = llc_state_NBRAcore(linkp, frame, frame_kind, + action = llc_state_NBRAcore(linkp, frame, frame_kind, cmdrsp, pollfinal); return action; @@ -1815,113 +1943,118 @@ llc_state_AWAIT_BUSY(struct llc_linkcb *linkp, struct llc *frame, int frame_kind * both transmitted and received. */ int -llc_state_AWAIT_REJECT(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, - int cmdrsp, int pollfinal) +llc_state_AWAIT_REJECT(linkp, frame, frame_kind, cmdrsp, pollfinal) + struct llc_linkcb *linkp; + struct llc *frame; + int frame_kind; + int cmdrsp; + int pollfinal; { - int action = LLC_PASSITON; + int action = LLC_PASSITON; - switch(frame_kind + cmdrsp) { + switch (frame_kind + cmdrsp) { case LLC_LOCAL_BUSY_DETECTED: llc_send(linkp, LLCFT_RNR, LLC_CMD, 0); - LLC_SETFLAG(linkp, DATA, 2); - LLC_NEWSTATE(linkp, AWAIT_BUSY); + LLC_SETFLAG(linkp,DATA,2); + LLC_NEWSTATE(linkp,AWAIT_BUSY); action = 0; break; case LLC_INVALID_NS + LLC_CMD: - case LLC_INVALID_NS + LLC_RSP: { - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - if (cmdrsp == LLC_CMD && pollfinal == 1) { - llc_send(linkp, LLCFT_RR, LLC_RSP, 1); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - action = 0; - } else if (cmdrsp == LLC_RSP && pollfinal == 1) { - LLC_UPDATE_NR_RECEIVED(linkp, nr); - linkp->llcl_vs = nr; - llc_resend(linkp, LLC_CMD, 1); - LLC_START_P_TIMER(linkp); - LLC_CLEAR_REMOTE_BUSY(linkp, action); - LLC_NEWSTATE(linkp, REJECT); - } else if (pollfinal == 0) { - LLC_UPDATE_NR_RECEIVED(linkp, nr); - action = 0; + case LLC_INVALID_NS + LLC_RSP:{ + register int nr = LLCGBITS(frame->llc_control_ext, s_nr); + + if (cmdrsp == LLC_CMD && pollfinal == 1) { + llc_send(linkp, LLCFT_RR, LLC_RSP, 1); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + action = 0; + } else if (cmdrsp == LLC_RSP && pollfinal == 1) { + LLC_UPDATE_NR_RECEIVED(linkp, nr); + linkp->llcl_vs = nr; + llc_resend(linkp, LLC_CMD, 1); + LLC_START_P_TIMER(linkp); + LLC_CLEAR_REMOTE_BUSY(linkp, action); + LLC_NEWSTATE(linkp,REJECT); + } else if (pollfinal == 0) { + LLC_UPDATE_NR_RECEIVED(linkp, nr); + action = 0; + } + break; } - break; - } case LLCFT_INFO + LLC_CMD: - case LLCFT_INFO + LLC_RSP: { - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); + case LLCFT_INFO + LLC_RSP:{ + register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - if (cmdrsp == LLC_CMD && pollfinal == 1) { - LLC_INC(linkp->llcl_vr); - llc_send(linkp, LLCFT_RR, LLC_RSP, 1); - LLC_STOP_REJ_TIMER(linkp); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_NEWSTATE(linkp, AWAIT); - action = LLC_DATA_INDICATION; - } else if (cmdrsp == LLC_RSP && pollfinal == 1) { - LLC_INC(linkp->llcl_vr); - LLC_STOP_P_TIMER(linkp); - LLC_STOP_REJ_TIMER(linkp); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - linkp->llcl_vs = nr; - llc_resend(linkp, LLC_CMD, 0); - LLC_CLEAR_REMOTE_BUSY(linkp, action); - LLC_NEWSTATE(linkp, NORMAL); - action = LLC_DATA_INDICATION; - } else if (pollfinal == 0) { - LLC_INC(linkp->llcl_vr); - llc_send(linkp, LLCFT_RR, LLC_CMD, 0); - LLC_STOP_REJ_TIMER(linkp); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_NEWSTATE(linkp, AWAIT); - action = LLC_DATA_INDICATION; + if (cmdrsp == LLC_CMD && pollfinal == 1) { + LLC_INC(linkp->llcl_vr); + llc_send(linkp, LLCFT_RR, LLC_RSP, 1); + LLC_STOP_REJ_TIMER(linkp); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_NEWSTATE(linkp,AWAIT); + action = LLC_DATA_INDICATION; + } else if (cmdrsp == LLC_RSP && pollfinal == 1) { + LLC_INC(linkp->llcl_vr); + LLC_STOP_P_TIMER(linkp); + LLC_STOP_REJ_TIMER(linkp); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + linkp->llcl_vs = nr; + llc_resend(linkp, LLC_CMD, 0); + LLC_CLEAR_REMOTE_BUSY(linkp, action); + LLC_NEWSTATE(linkp,NORMAL); + action = LLC_DATA_INDICATION; + } else if (pollfinal == 0) { + LLC_INC(linkp->llcl_vr); + llc_send(linkp, LLCFT_RR, LLC_CMD, 0); + LLC_STOP_REJ_TIMER(linkp); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_NEWSTATE(linkp,AWAIT); + action = LLC_DATA_INDICATION; + } + break; } - break; - } case LLCFT_RR + LLC_CMD: case LLCFT_REJ + LLC_CMD: case LLCFT_RR + LLC_RSP: - case LLCFT_REJ + LLC_RSP: { - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - if (cmdrsp == LLC_CMD && pollfinal == 1) { - llc_send(linkp, LLCFT_RR, LLC_RSP, 1); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_CLEAR_REMOTE_BUSY(linkp, action); - } else if (cmdrsp == LLC_RSP && pollfinal == 1) { - LLC_UPDATE_NR_RECEIVED(linkp, nr); - linkp->llcl_vs = nr; - llc_resend(linkp, LLC_CMD, 1); - LLC_START_P_TIMER(linkp); - LLC_CLEAR_REMOTE_BUSY(linkp, action); - LLC_NEWSTATE(linkp, REJECT); - } else if (pollfinal == 0) { - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_CLEAR_REMOTE_BUSY(linkp, action); + case LLCFT_REJ + LLC_RSP:{ + register int nr = LLCGBITS(frame->llc_control_ext, s_nr); + + if (cmdrsp == LLC_CMD && pollfinal == 1) { + llc_send(linkp, LLCFT_RR, LLC_RSP, 1); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_CLEAR_REMOTE_BUSY(linkp, action); + } else if (cmdrsp == LLC_RSP && pollfinal == 1) { + LLC_UPDATE_NR_RECEIVED(linkp, nr); + linkp->llcl_vs = nr; + llc_resend(linkp, LLC_CMD, 1); + LLC_START_P_TIMER(linkp); + LLC_CLEAR_REMOTE_BUSY(linkp, action); + LLC_NEWSTATE(linkp,REJECT); + } else if (pollfinal == 0) { + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_CLEAR_REMOTE_BUSY(linkp, action); + } + break; } - break; - } case LLCFT_RNR + LLC_CMD: - case LLCFT_RNR + LLC_RSP: { - register int nr = LLCGBITS(frame->llc_control_ext, s_nr); - - if (cmdrsp == LLC_CMD && pollfinal == 1) { - llc_send(linkp, LLCFT_RR, LLC_RSP, 1); - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_SET_REMOTE_BUSY(linkp, action); - } else if (cmdrsp == LLC_RSP && pollfinal == 1) { - LLC_UPDATE_NR_RECEIVED(linkp, nr); - linkp->llcl_vs = nr; - LLC_STOP_P_TIMER(linkp); - LLC_SET_REMOTE_BUSY(linkp, action); - LLC_NEWSTATE(linkp, REJECT); - } else if (pollfinal == 0) { - LLC_UPDATE_NR_RECEIVED(linkp, nr); - LLC_SET_REMOTE_BUSY(linkp, action); + case LLCFT_RNR + LLC_RSP:{ + register int nr = + LLCGBITS(frame->llc_control_ext,s_nr); + + if (cmdrsp == LLC_CMD && pollfinal == 1) { + llc_send(linkp, LLCFT_RR, LLC_RSP, 1); + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_SET_REMOTE_BUSY(linkp,action); + } else if (cmdrsp == LLC_RSP && pollfinal == 1) { + LLC_UPDATE_NR_RECEIVED(linkp, nr); + linkp->llcl_vs = nr; + LLC_STOP_P_TIMER(linkp); + LLC_SET_REMOTE_BUSY(linkp,action); + LLC_NEWSTATE(linkp,REJECT); + } else if (pollfinal == 0) { + LLC_UPDATE_NR_RECEIVED(linkp, nr); + LLC_SET_REMOTE_BUSY(linkp,action); + } + break; } - break; - } case LLC_P_TIMER_EXPIRED: if (linkp->llcl_retry < llc_n2) { llc_send(linkp, LLCFT_REJ, LLC_CMD, 1); @@ -1932,7 +2065,7 @@ llc_state_AWAIT_REJECT(struct llc_linkcb *linkp, struct llc *frame, int frame_ki break; } if (action == LLC_PASSITON) - action = llc_state_NBRAcore(linkp, frame, frame_kind, + action = llc_state_NBRAcore(linkp, frame, frame_kind, cmdrsp, pollfinal); return action; @@ -1946,39 +2079,44 @@ llc_state_AWAIT_REJECT(struct llc_linkcb *linkp, struct llc *frame, int frame_ki */ int -llc_statehandler(struct llc_linkcb *linkp, struct llc *frame, int frame_kind, - int cmdrsp, int pollfinal) +llc_statehandler(linkp, frame, frame_kind, cmdrsp, pollfinal) + struct llc_linkcb *linkp; + struct llc *frame; + int frame_kind; + int cmdrsp; + int pollfinal; { - register int action = 0; + register int action = 0; /* * To check for ``zombie'' links each time llc_statehandler() gets called * the AGE timer of linkp is reset. If it expires llc_timer() will * take care of the link --- i.e. kill it 8=) */ - LLC_STARTTIMER(linkp, AGE); + LLC_STARTTIMER(linkp,AGE); /* * Now call the current statehandler function. */ - action = (*linkp->llcl_statehandler)(linkp, frame, frame_kind, - cmdrsp, pollfinal); + action = (*linkp->llcl_statehandler) (linkp, frame, frame_kind, + cmdrsp, pollfinal); once_more_and_again: switch (action) { - case LLC_CONNECT_INDICATION: { - int naction; - - LLC_TRACE(linkp, LLCTR_INTERESTING, "CONNECT INDICATION"); - linkp->llcl_nlnext = - (*linkp->llcl_sapinfo->si_ctlinput) - (PRC_CONNECT_INDICATION, - (struct sockaddr *) &linkp->llcl_addr, (caddr_t) linkp); - if (linkp->llcl_nlnext == 0) - naction = NL_DISCONNECT_REQUEST; - else naction = NL_CONNECT_RESPONSE; - action = (*linkp->llcl_statehandler)(linkp, frame, naction, 0, 0); - goto once_more_and_again; - } + case LLC_CONNECT_INDICATION:{ + int naction; + + LLC_TRACE(linkp, LLCTR_INTERESTING, "CONNECT INDICATION"); + linkp->llcl_nlnext = + (*linkp->llcl_sapinfo->si_ctlinput) + (PRC_CONNECT_INDICATION, + (struct sockaddr *) & linkp->llcl_addr, (caddr_t) linkp); + if (linkp->llcl_nlnext == 0) + naction = NL_DISCONNECT_REQUEST; + else + naction = NL_CONNECT_RESPONSE; + action = (*linkp->llcl_statehandler) (linkp, frame, naction, 0, 0); + goto once_more_and_again; + } case LLC_CONNECT_CONFIRM: /* llc_resend(linkp, LLC_CMD, 0); */ llc_start(linkp); @@ -1986,10 +2124,10 @@ once_more_and_again: case LLC_DISCONNECT_INDICATION: LLC_TRACE(linkp, LLCTR_INTERESTING, "DISCONNECT INDICATION"); (*linkp->llcl_sapinfo->si_ctlinput) - (PRC_DISCONNECT_INDICATION, - (struct sockaddr *) &linkp->llcl_addr, linkp->llcl_nlnext); + (PRC_DISCONNECT_INDICATION, + (struct sockaddr *) & linkp->llcl_addr, linkp->llcl_nlnext); break; - /* internally visible only */ + /* internally visible only */ case LLC_RESET_CONFIRM: case LLC_RESET_INDICATION_LOCAL: /* @@ -1999,17 +2137,17 @@ once_more_and_again: break; case LLC_RESET_INDICATION_REMOTE: LLC_TRACE(linkp, LLCTR_SHOULDKNOW, "RESET INDICATION (REMOTE)"); - action = (*linkp->llcl_statehandler)(linkp, frame, - NL_RESET_RESPONSE, 0, 0); + action = (*linkp->llcl_statehandler) (linkp, frame, + NL_RESET_RESPONSE, 0, 0); goto once_more_and_again; case LLC_FRMR_SENT: LLC_TRACE(linkp, LLCTR_URGENT, "FRMR SENT"); break; case LLC_FRMR_RECEIVED: LLC_TRACE(linkp, LLCTR_URGEN, "FRMR RECEIVED"); - action = (*linkp->llcl_statehandler)(linkp, frame, - NL_RESET_REQUEST, 0, 0); - + action = (*linkp->llcl_statehandler) (linkp, frame, + NL_RESET_REQUEST, 0, 0); + goto once_more_and_again; case LLC_REMOTE_BUSY: LLC_TRACE(linkp, LLCTR_SHOULDKNOW, "REMOTE BUSY"); @@ -2021,12 +2159,12 @@ once_more_and_again: */ llc_start(linkp); break; - } + } /* * Only LLC_DATA_INDICATION is for the time being * passed up to the network layer entity. - * The remaining action codes are for the time + * The remaining action codes are for the time * being visible internally only. * However, this can/may be changed if necessary. */ @@ -2037,12 +2175,13 @@ once_more_and_again: /* * Core LLC2 routines - */ + */ /* * The INIT call. This routine is called once after the system is booted. */ +void llc_init() { llcintrq.ifq_maxlen = IFQ_MAXLEN; @@ -2055,22 +2194,24 @@ llc_init() */ void -llc_resetwindow(struct llc_linkcb *linkp) +llc_resetwindow(linkp) + struct llc_linkcb *linkp; { register struct mbuf *mptr = (struct mbuf *) 0; - register struct mbuf *anchor = (struct mbuf *)0; - register short i; + register struct mbuf *anchor = (struct mbuf *) 0; + register short i; /* Pick up all queued frames and collect them in a linked mbuf list */ if (linkp->llcl_slotsfree != linkp->llcl_window) { i = llc_seq2slot(linkp, linkp->llcl_nr_received); - anchor = mptr = linkp->llcl_output_buffers[i]; - for (; i != linkp->llcl_freeslot; - i = llc_seq2slot(linkp, i+1)) { + anchor = mptr = linkp->llcl_output_buffers[i]; + for (; i != linkp->llcl_freeslot; + i = llc_seq2slot(linkp, i + 1)) { if (linkp->llcl_output_buffers[i]) { mptr->m_nextpkt = linkp->llcl_output_buffers[i]; mptr = mptr->m_nextpkt; - } else panic("LLC2 window broken"); + } else + panic("LLC2 window broken"); } } /* clean closure */ @@ -2078,36 +2219,44 @@ llc_resetwindow(struct llc_linkcb *linkp) mptr->m_nextpkt = (struct mbuf *) 0; /* Now --- plug 'em in again */ - if (anchor != (struct mbuf *)0) { + if (anchor != (struct mbuf *) 0) { for (i = 0, mptr = anchor; mptr != (struct mbuf *) 0; i++) { linkp->llcl_output_buffers[i] = mptr; mptr = mptr->m_nextpkt; - linkp->llcl_output_buffers[i]->m_nextpkt = (struct mbuf *)0; + linkp->llcl_output_buffers[i]->m_nextpkt = (struct mbuf *) 0; } linkp->llcl_freeslot = i; - } else linkp->llcl_freeslot = 0; - + } else + linkp->llcl_freeslot = 0; + /* We're resetting the link, the next frame to be acknowledged is 0 */ linkp->llcl_nr_received = 0; - /* set distance between LLC2 sequence number and the top of window to 0 */ + /* + * set distance between LLC2 sequence number and the top of window to + * 0 + */ linkp->llcl_projvs = linkp->llcl_freeslot; return; } - + /* * llc_newlink() --- We allocate enough memory to contain a link control block - * and initialize it properly. We don't intiate the actual setup - * of the LLC2 link here. + * and initialize it properly. We don't intiate the actual + * setup of the LLC2 link here. */ struct llc_linkcb * -llc_newlink(struct sockaddr_dl *dst, struct ifnet *ifp, struct rtentry *nlrt, - caddr_t nlnext, struct rtentry *llrt) +llc_newlink(dst, ifp, nlrt, nlnext, llrt) + struct sockaddr_dl *dst; + struct ifnet *ifp; + struct rtentry *nlrt; + caddr_t nlnext; + struct rtentry *llrt; { struct llc_linkcb *nlinkp; - u_char sap = LLSAPADDR(dst); - short llcwindow; + u_char sap = LLSAPADDR(dst); + short llcwindow; /* allocate memory for link control block */ @@ -2115,8 +2264,8 @@ llc_newlink(struct sockaddr_dl *dst, struct ifnet *ifp, struct rtentry *nlrt, M_PCB, M_DONTWAIT); if (nlinkp == 0) return (NULL); - bzero((caddr_t)nlinkp, sizeof(struct llc_linkcb)); - + bzero((caddr_t) nlinkp, sizeof(struct llc_linkcb)); + /* copy link address */ sdl_copy(dst, &nlinkp->llcl_addr); @@ -2134,7 +2283,7 @@ llc_newlink(struct sockaddr_dl *dst, struct ifnet *ifp, struct rtentry *nlrt, /* setup initial state handler function */ nlinkp->llcl_statehandler = llc_state_ADM; - + /* hold on to interface pointer */ nlinkp->llcl_if = ifp; @@ -2146,14 +2295,14 @@ llc_newlink(struct sockaddr_dl *dst, struct ifnet *ifp, struct rtentry *nlrt, llcwindow = LLC_MAX_WINDOW; /* allocate memory for window buffer */ - MALLOC(nlinkp->llcl_output_buffers, struct mbuf **, - llcwindow*sizeof(struct mbuf *), M_PCB, M_DONTWAIT); + MALLOC(nlinkp->llcl_output_buffers, struct mbuf **, + llcwindow * sizeof(struct mbuf *), M_PCB, M_DONTWAIT); if (nlinkp->llcl_output_buffers == 0) { FREE(nlinkp, M_PCB); - return(NULL); + return (NULL); } - bzero((caddr_t)nlinkp->llcl_output_buffers, - llcwindow*sizeof(struct mbuf *)); + bzero((caddr_t) nlinkp->llcl_output_buffers, + llcwindow * sizeof(struct mbuf *)); /* set window size & slotsfree */ nlinkp->llcl_slotsfree = nlinkp->llcl_window = llcwindow; @@ -2161,28 +2310,30 @@ llc_newlink(struct sockaddr_dl *dst, struct ifnet *ifp, struct rtentry *nlrt, /* enter into linked listed of link control blocks */ insque(nlinkp, &llccb_q); - return(nlinkp); + return (nlinkp); } /* * llc_dellink() --- farewell to link control block */ -llc_dellink(struct llc_linkcb *linkp) +void +llc_dellink(linkp) + struct llc_linkcb *linkp; { register struct mbuf *m; register struct mbuf *n; register struct npaidbentry *sapinfo = linkp->llcl_sapinfo; - register i; + register i; /* notify upper layer of imminent death */ if (linkp->llcl_nlnext && sapinfo->si_ctlinput) (*sapinfo->si_ctlinput) - (PRC_DISCONNECT_INDICATION, - (struct sockaddr *)&linkp->llcl_addr, linkp->llcl_nlnext); + (PRC_DISCONNECT_INDICATION, + (struct sockaddr *) & linkp->llcl_addr, linkp->llcl_nlnext); /* pull the plug */ if (linkp->llcl_llrt) - ((struct npaidbentry *)(linkp->llcl_llrt->rt_llinfo))->np_link + ((struct npaidbentry *) (linkp->llcl_llrt->rt_llinfo))->np_link = (struct llc_linkcb *) 0; /* leave link control block queue */ @@ -2196,54 +2347,81 @@ llc_dellink(struct llc_linkcb *linkp) } /* drop packets in the window */ - for(i = 0; i < linkp->llcl_window; i++) + for (i = 0; i < linkp->llcl_window; i++) if (linkp->llcl_output_buffers[i]) m_freem(linkp->llcl_output_buffers[i]); /* return the window space */ - FREE((caddr_t)linkp->llcl_output_buffers, M_PCB); + FREE((caddr_t) linkp->llcl_output_buffers, M_PCB); /* return the control block space --- now it's gone ... */ - FREE((caddr_t)linkp, M_PCB); + FREE((caddr_t) linkp, M_PCB); } -llc_decode(struct llc* frame, struct llc_linkcb * linkp) +int +llc_decode(frame, linkp) + struct llc *frame; + struct llc_linkcb *linkp; { - register int ft = LLC_BAD_PDU; + register int ft = LLC_BAD_PDU; if ((frame->llc_control & 01) == 0) { ft = LLCFT_INFO; - /* S or U frame ? */ - } else switch (frame->llc_control) { - - /* U frames */ - case LLC_UI: - case LLC_UI_P: ft = LLC_UI; break; - case LLC_DM: - case LLC_DM_P: ft =LLCFT_DM; break; - case LLC_DISC: - case LLC_DISC_P: ft = LLCFT_DISC; break; - case LLC_UA: - case LLC_UA_P: ft = LLCFT_UA; break; - case LLC_SABME: - case LLC_SABME_P: ft = LLCFT_SABME; break; - case LLC_FRMR: - case LLC_FRMR_P: ft = LLCFT_FRMR; break; - case LLC_XID: - case LLC_XID_P: ft = LLCFT_XID; break; - case LLC_TEST: - case LLC_TEST_P: ft = LLCFT_TEST; break; - - /* S frames */ - case LLC_RR: ft = LLCFT_RR; break; - case LLC_RNR: ft = LLCFT_RNR; break; - case LLC_REJ: ft = LLCFT_REJ; break; - } /* switch */ + /* S or U frame ? */ + } else + switch (frame->llc_control) { + + /* U frames */ + case LLC_UI: + case LLC_UI_P: + ft = LLC_UI; + break; + case LLC_DM: + case LLC_DM_P: + ft = LLCFT_DM; + break; + case LLC_DISC: + case LLC_DISC_P: + ft = LLCFT_DISC; + break; + case LLC_UA: + case LLC_UA_P: + ft = LLCFT_UA; + break; + case LLC_SABME: + case LLC_SABME_P: + ft = LLCFT_SABME; + break; + case LLC_FRMR: + case LLC_FRMR_P: + ft = LLCFT_FRMR; + break; + case LLC_XID: + case LLC_XID_P: + ft = LLCFT_XID; + break; + case LLC_TEST: + case LLC_TEST_P: + ft = LLCFT_TEST; + break; + + /* S frames */ + case LLC_RR: + ft = LLCFT_RR; + break; + case LLC_RNR: + ft = LLCFT_RNR; + break; + case LLC_REJ: + ft = LLCFT_REJ; + break; + } /* switch */ if (linkp) { switch (ft) { case LLCFT_INFO: - if (LLCGBITS(frame->llc_control, i_ns) != linkp->llcl_vr) { + if (LLCGBITS(frame->llc_control,i_ns) != + linkp->llcl_vr) { ft = LLC_INVALID_NS; break; } @@ -2252,13 +2430,13 @@ llc_decode(struct llc* frame, struct llc_linkcb * linkp) case LLCFT_RNR: case LLCFT_REJ: /* splash! */ - if (LLC_NR_VALID(linkp, LLCGBITS(frame->llc_control_ext, - s_nr)) == 0) + if (LLC_NR_VALID(linkp, + LLCGBITS(frame->llc_control_ext,s_nr)) + == 0) ft = LLC_INVALID_NR; break; } } - return ft; } @@ -2266,16 +2444,18 @@ llc_decode(struct llc* frame, struct llc_linkcb * linkp) * llc_anytimersup() --- Checks if at least one timer is still up and running. */ int -llc_anytimersup(struct llc_linkcb * linkp) +llc_anytimersup(linkp) + struct llc_linkcb *linkp; { - register int i; - + register int i; + FOR_ALL_LLC_TIMERS(i) if (linkp->llcl_timers[i] > 0) - break; + break; if (i == LLC_AGE_SHIFT) return 0; - else return 1; + else + return 1; } /* @@ -2283,63 +2463,66 @@ llc_anytimersup(struct llc_linkcb * linkp) */ #define SAL(s) ((struct sockaddr_dl *)&(s)->llcl_addr) -#define CHECK(l, s) if (LLC_STATEEQ(l, s)) return #s +#define CHECK(l,s) if (LLC_STATEEQ(l,s)) return __STRING(s) char *timer_names[] = {"ACK", "P", "BUSY", "REJ", "AGE"}; char * -llc_getstatename(struct llc_linkcb *linkp) +llc_getstatename(linkp) + struct llc_linkcb *linkp; { - CHECK(linkp, ADM); - CHECK(linkp, CONN); - CHECK(linkp, RESET_WAIT); - CHECK(linkp, RESET_CHECK); - CHECK(linkp, SETUP); - CHECK(linkp, RESET); - CHECK(linkp, D_CONN); - CHECK(linkp, ERROR); - CHECK(linkp, NORMAL); - CHECK(linkp, BUSY); - CHECK(linkp, REJECT); - CHECK(linkp, AWAIT); - CHECK(linkp, AWAIT_BUSY); - CHECK(linkp, AWAIT_REJECT); + CHECK(linkp,ADM); + CHECK(linkp,CONN); + CHECK(linkp,RESET_WAIT); + CHECK(linkp,RESET_CHECK); + CHECK(linkp,SETUP); + CHECK(linkp,RESET); + CHECK(linkp,D_CONN); + CHECK(linkp,ERROR); + CHECK(linkp,NORMAL); + CHECK(linkp,BUSY); + CHECK(linkp,REJECT); + CHECK(linkp,AWAIT); + CHECK(linkp,AWAIT_BUSY); + CHECK(linkp,AWAIT_REJECT); return "UNKNOWN - eh?"; } void -llc_link_dump(struct llc_linkcb* linkp, const char *message) +llc_link_dump(linkp, message) + struct llc_linkcb *linkp; + const char *message; { - register int i; - register char *state; + register int i; /* print interface */ printf("if %s%d\n", linkp->llcl_if->if_name, linkp->llcl_if->if_unit); - + /* print message */ printf(">> %s <<\n", message); /* print MAC and LSAP */ printf("llc addr "); - for (i = 0; i < (SAL(linkp)->sdl_alen)-2; i++) - printf("%x:", (char)*(LLADDR(SAL(linkp))+i) & 0xff); - printf("%x,", (char)*(LLADDR(SAL(linkp))+i) & 0xff); - printf("%x\n", (char)*(LLADDR(SAL(linkp))+i+1) & 0xff); + for (i = 0; i < (SAL(linkp)->sdl_alen) - 2; i++) + printf("%x:", (char) *(LLADDR(SAL(linkp)) + i) & 0xff); + printf("%x,", (char) *(LLADDR(SAL(linkp)) + i) & 0xff); + printf("%x\n", (char) *(LLADDR(SAL(linkp)) + i + 1) & 0xff); /* print state we're in and timers */ - printf("state %s, ", llc_getstatename(linkp)); - for (i = LLC_ACK_SHIFT; i < LLC_AGE_SHIFT; i++) - printf("%s-%c %d/", timer_names[i], - (linkp->llcl_timerflags & (1<<i) ? 'R' : 'S'), + printf("state %s, ", llc_getstatename(linkp)); + for (i = LLC_ACK_SHIFT; i < LLC_AGE_SHIFT; i++) + printf("%s-%c %d/", timer_names[i], + (linkp->llcl_timerflags & (1 << i) ? 'R' : 'S'), linkp->llcl_timers[i]); - printf("%s-%c %d\n", timer_names[i], (linkp->llcl_timerflags & (1<<i) ? - 'R' : 'S'), linkp->llcl_timers[i]); + printf("%s-%c %d\n", timer_names[i], (linkp->llcl_timerflags & (1 << i) ? + 'R' : 'S'), linkp->llcl_timers[i]); /* print flag values */ printf("flags P %d/F %d/S %d/DATA %d/REMOTE_BUSY %d\n", - LLC_GETFLAG(linkp, P), LLC_GETFLAG(linkp, S), - LLC_GETFLAG(linkp, DATA), LLC_GETFLAG(linkp, REMOTE_BUSY)); + LLC_GETFLAG(linkp,P), LLC_GETFLAG(linkp,F), + LLC_GETFLAG(linkp,S), + LLC_GETFLAG(linkp,DATA), LLC_GETFLAG(linkp,REMOTE_BUSY)); /* print send and receive state variables, ack, and window */ printf("V(R) %d/V(S) %d/N(R) received %d/window %d/freeslot %d\n", @@ -2351,10 +2534,11 @@ llc_link_dump(struct llc_linkcb* linkp, const char *message) } void -llc_trace(struct llc_linkcb *linkp, int level, const char *message) +llc_trace(linkp, level, message) + struct llc_linkcb *linkp; + int level; + const char *message; { if (linkp->llcl_sapinfo->si_trace && level > llc_tracelevel) llc_link_dump(linkp, message); - - return; } |