/* * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * *--------------------------------------------------------------------------- * * i4b_l4if.c - Layer 3 interface to Layer 4 * ------------------------------------------- * * $Id: i4b_l4if.c,v 1.2 2001/03/24 12:40:32 martin Exp $ * * $FreeBSD$ * * last edit-date: [Fri Jan 5 11:33:47 2001] * *---------------------------------------------------------------------------*/ #ifdef __FreeBSD__ #include "i4bq931.h" #else #define NI4BQ931 1 #endif #if NI4BQ931 > 0 #include #include #include #include #include #include #if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000 #include #endif #ifdef __FreeBSD__ #include #include #include #else #include #include #include #endif #include #include #include #include #include #include #include #include #include #include extern void isic_settrace(int unit, int val); /*XXX*/ extern int isic_gettrace(int unit); /*XXX*/ static void n_connect_request(u_int cdid); static void n_connect_response(u_int cdid, int response, int cause); static void n_disconnect_request(u_int cdid, int cause); static void n_alert_request(u_int cdid); static void n_mgmt_command(int bri, int cmd, void *parm); /*---------------------------------------------------------------------------* * i4b_mdl_status_ind - status indication from lower layers *---------------------------------------------------------------------------*/ int i4b_mdl_status_ind(int bri, int status, int parm) { struct l2_softc * l2sc = (struct l2_softc*)isdn_find_l2_by_bri(bri); int sendup; int i; NDBGL3(L3_MSG, "bri = %d, status = %d, parm = %d", bri, status, parm); switch(status) { case STI_ATTACH: NDBGL3(L3_MSG, "STI_ATTACH: attaching bri %d to controller %d", bri, nctrl); /* init function pointers */ ctrl_desc[nctrl].N_CONNECT_REQUEST = n_connect_request; ctrl_desc[nctrl].N_CONNECT_RESPONSE = n_connect_response; ctrl_desc[nctrl].N_DISCONNECT_REQUEST = n_disconnect_request; ctrl_desc[nctrl].N_ALERT_REQUEST = n_alert_request; #if 0 ctrl_desc[nctrl].N_DOWNLOAD = NULL; /* only used by active cards */ ctrl_desc[nctrl].N_DIAGNOSTICS = NULL; /* only used by active cards */ #endif ctrl_desc[nctrl].N_MGMT_COMMAND = n_mgmt_command; /* init type and unit */ ctrl_desc[nctrl].l1_token = l2sc->l1_token; ctrl_desc[nctrl].bri = bri; ctrl_desc[nctrl].ctrl_type = CTRL_PASSIVE; ctrl_desc[nctrl].card_type = parm; /* state fields */ ctrl_desc[nctrl].dl_est = DL_DOWN; ctrl_desc[nctrl].bch_state[CHAN_B1] = BCH_ST_FREE; ctrl_desc[nctrl].bch_state[CHAN_B2] = BCH_ST_FREE; ctrl_desc[nctrl].tei = -1; /* init unit to controller table */ utoc_tab[bri] = nctrl; /* increment no. of controllers */ nctrl++; break; case STI_L1STAT: i4b_l4_l12stat(bri, 1, parm); NDBGL3(L3_MSG, "STI_L1STAT: bri %d layer 1 = %s", bri, status ? "up" : "down"); break; case STI_L2STAT: i4b_l4_l12stat(bri, 2, parm); NDBGL3(L3_MSG, "STI_L2STAT: bri %d layer 2 = %s", bri, status ? "up" : "down"); break; case STI_TEIASG: ctrl_desc[bri].tei = parm; i4b_l4_teiasg(bri, parm); NDBGL3(L3_MSG, "STI_TEIASG: bri %d TEI = %d = 0x%02x", bri, parm, parm); break; case STI_PDEACT: /* L1 T4 timeout */ NDBGL3(L3_ERR, "STI_PDEACT: bri %d TEI = %d = 0x%02x", bri, parm, parm); sendup = 0; for(i=0; i < N_CALL_DESC; i++) { if(call_desc[i].bri == bri) { i4b_l3_stop_all_timers(&(call_desc[i])); if(call_desc[i].cdid != CDID_UNUSED) sendup++; } } ctrl_desc[utoc_tab[bri]].dl_est = DL_DOWN; ctrl_desc[utoc_tab[bri]].bch_state[CHAN_B1] = BCH_ST_FREE; ctrl_desc[utoc_tab[bri]].bch_state[CHAN_B2] = BCH_ST_FREE; ctrl_desc[utoc_tab[bri]].tei = -1; if(sendup) { i4b_l4_pdeact(bri, sendup); call_desc[i].cdid = CDID_UNUSED; } break; case STI_NOL1ACC: /* no outgoing access to S0 */ NDBGL3(L3_ERR, "STI_NOL1ACC: bri %d no outgoing access to S0", bri); for(i=0; i < N_CALL_DESC; i++) { if(call_desc[i].bri == bri) { if(call_desc[i].cdid != CDID_UNUSED) { SET_CAUSE_TYPE(call_desc[i].cause_in, CAUSET_I4B); SET_CAUSE_VAL(call_desc[i].cause_in, CAUSE_I4B_L1ERROR); i4b_l4_disconnect_ind(&(call_desc[i])); } } } ctrl_desc[utoc_tab[bri]].dl_est = DL_DOWN; ctrl_desc[utoc_tab[bri]].bch_state[CHAN_B1] = BCH_ST_FREE; ctrl_desc[utoc_tab[bri]].bch_state[CHAN_B2] = BCH_ST_FREE; ctrl_desc[utoc_tab[bri]].tei = -1; break; default: NDBGL3(L3_ERR, "ERROR, bri %d, unknown status value %d!", bri, status); break; } return(0); } /*---------------------------------------------------------------------------* * send command to the lower layers *---------------------------------------------------------------------------*/ static void n_mgmt_command(int bri, int cmd, void *parm) { int i; switch(cmd) { case CMR_DOPEN: NDBGL3(L3_MSG, "CMR_DOPEN for bri %d", bri); for(i=0; i < N_CALL_DESC; i++) { if(call_desc[i].bri == bri) { call_desc[i].cdid = CDID_UNUSED; } } ctrl_desc[utoc_tab[bri]].dl_est = DL_DOWN; ctrl_desc[utoc_tab[bri]].bch_state[CHAN_B1] = BCH_ST_FREE; ctrl_desc[utoc_tab[bri]].bch_state[CHAN_B2] = BCH_ST_FREE; ctrl_desc[utoc_tab[bri]].tei = -1; break; case CMR_DCLOSE: NDBGL3(L3_MSG, "CMR_DCLOSE for bri %d", bri); break; default: NDBGL3(L3_MSG, "unknown cmd %d for bri %d", cmd, bri); break; } i4b_mdl_command_req(bri, cmd, parm); } /*---------------------------------------------------------------------------* * handle connect request message from userland *---------------------------------------------------------------------------*/ static void n_connect_request(u_int cdid) { call_desc_t *cd; cd = cd_by_cdid(cdid); next_l3state(cd, EV_SETUPRQ); } /*---------------------------------------------------------------------------* * handle setup response message from userland *---------------------------------------------------------------------------*/ static void n_connect_response(u_int cdid, int response, int cause) { call_desc_t *cd; int chstate; cd = cd_by_cdid(cdid); T400_stop(cd); cd->response = response; cd->cause_out = cause; switch(response) { case SETUP_RESP_ACCEPT: next_l3state(cd, EV_SETACRS); chstate = BCH_ST_USED; break; case SETUP_RESP_REJECT: next_l3state(cd, EV_SETRJRS); chstate = BCH_ST_FREE; break; case SETUP_RESP_DNTCRE: next_l3state(cd, EV_SETDCRS); chstate = BCH_ST_FREE; break; default: /* failsafe */ next_l3state(cd, EV_SETDCRS); chstate = BCH_ST_FREE; NDBGL3(L3_ERR, "unknown response, doing SETUP_RESP_DNTCRE"); break; } if((cd->channelid == CHAN_B1) || (cd->channelid == CHAN_B2)) { ctrl_desc[cd->bri].bch_state[cd->channelid] = chstate; } else { NDBGL3(L3_MSG, "Warning, invalid channelid %d, response = %d\n", cd->channelid, response); } } /*---------------------------------------------------------------------------* * handle disconnect request message from userland *---------------------------------------------------------------------------*/ static void n_disconnect_request(u_int cdid, int cause) { call_desc_t *cd; cd = cd_by_cdid(cdid); cd->cause_out = cause; next_l3state(cd, EV_DISCRQ); } /*---------------------------------------------------------------------------* * handle alert request message from userland *---------------------------------------------------------------------------*/ static void n_alert_request(u_int cdid) { call_desc_t *cd; cd = cd_by_cdid(cdid); next_l3state(cd, EV_ALERTRQ); } #endif /* NI4BQ931 > 0 */