/*- * Copyright (c) 1997, 2002 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 * ------------------------------------------- * last edit-date: [Sat Mar 9 19:36:08 2002] * *---------------------------------------------------------------------------*/ #include __FBSDID("$FreeBSD$"); #include #include #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 unit, int cmd, void *parm); /*---------------------------------------------------------------------------* * i4b_mdl_status_ind - status indication from lower layers *---------------------------------------------------------------------------*/ int i4b_mdl_status_ind(int unit, int status, int parm) { int sendup; int i; NDBGL3(L3_MSG, "unit = %d, status = %d, parm = %d", unit, status, parm); switch(status) { case STI_ATTACH: NDBGL3(L3_MSG, "STI_ATTACH: attaching unit %d to controller %d", unit, 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; ctrl_desc[nctrl].N_DOWNLOAD = NULL; /* only used by active cards */ ctrl_desc[nctrl].N_DIAGNOSTICS = NULL; /* only used by active cards */ ctrl_desc[nctrl].N_MGMT_COMMAND = n_mgmt_command; /* init type and unit */ ctrl_desc[nctrl].unit = unit; 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].nbch = 2; /* XXX extra param? */ for (i = 0; i < ctrl_desc[nctrl].nbch; i++) ctrl_desc[nctrl].bch_state[i] = BCH_ST_FREE; ctrl_desc[nctrl].tei = -1; /* init unit to controller table */ utoc_tab[unit] = nctrl; /* increment no. of controllers */ nctrl++; break; case STI_L1STAT: i4b_l4_l12stat(unit, 1, parm); NDBGL3(L3_MSG, "STI_L1STAT: unit %d layer 1 = %s", unit, status ? "up" : "down"); break; case STI_L2STAT: i4b_l4_l12stat(unit, 2, parm); NDBGL3(L3_MSG, "STI_L2STAT: unit %d layer 2 = %s", unit, status ? "up" : "down"); break; case STI_TEIASG: ctrl_desc[unit].tei = parm; i4b_l4_teiasg(unit, parm); NDBGL3(L3_MSG, "STI_TEIASG: unit %d TEI = %d = 0x%02x", unit, parm, parm); break; case STI_PDEACT: /* L1 T4 timeout */ NDBGL3(L3_ERR, "STI_PDEACT: unit %d TEI = %d = 0x%02x", unit, parm, parm); sendup = 0; for(i=0; i < N_CALL_DESC; i++) { if( (ctrl_desc[call_desc[i].controller].ctrl_type == CTRL_PASSIVE) && (ctrl_desc[call_desc[i].controller].unit == unit)) { i4b_l3_stop_all_timers(&(call_desc[i])); if(call_desc[i].cdid != CDID_UNUSED) sendup++; } } ctrl_desc[utoc_tab[unit]].dl_est = DL_DOWN; for (i = 0; i < ctrl_desc[utoc_tab[unit]].nbch; i++) ctrl_desc[utoc_tab[unit]].bch_state[i] = BCH_ST_FREE; ctrl_desc[utoc_tab[unit]].tei = -1; if(sendup) { i4b_l4_pdeact(unit, sendup); call_desc[i].cdid = CDID_UNUSED; } break; case STI_NOL1ACC: /* no outgoing access to S0 */ NDBGL3(L3_ERR, "STI_NOL1ACC: unit %d no outgoing access to S0", unit); for(i=0; i < N_CALL_DESC; i++) { if( (ctrl_desc[call_desc[i].controller].ctrl_type == CTRL_PASSIVE) && (ctrl_desc[call_desc[i].controller].unit == unit)) { 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[unit]].dl_est = DL_DOWN; for (i = 0; i < ctrl_desc[utoc_tab[unit]].nbch; i++) ctrl_desc[utoc_tab[unit]].bch_state[i] = BCH_ST_FREE; ctrl_desc[utoc_tab[unit]].tei = -1; break; default: NDBGL3(L3_ERR, "ERROR, unit %d, unknown status value %d!", unit, status); break; } return(0); } /*---------------------------------------------------------------------------* * send command to the lower layers *---------------------------------------------------------------------------*/ static void n_mgmt_command(int unit, int cmd, void *parm) { int i; switch(cmd) { case CMR_DOPEN: NDBGL3(L3_MSG, "CMR_DOPEN for unit %d", unit); for(i=0; i < N_CALL_DESC; i++) { if( (ctrl_desc[call_desc[i].controller].ctrl_type == CTRL_PASSIVE) && (ctrl_desc[call_desc[i].controller].unit == unit)) { call_desc[i].cdid = CDID_UNUSED; } } ctrl_desc[utoc_tab[unit]].dl_est = DL_DOWN; for (i = 0; i < ctrl_desc[utoc_tab[unit]].nbch; i++) ctrl_desc[utoc_tab[unit]].bch_state[i] = BCH_ST_FREE; ctrl_desc[utoc_tab[unit]].tei = -1; break; case CMR_DCLOSE: NDBGL3(L3_MSG, "CMR_DCLOSE for unit %d", unit); break; case CMR_SETTRACE: NDBGL3(L3_MSG, "CMR_SETTRACE for unit %d", unit); break; default: NDBGL3(L3_MSG, "unknown cmd %d for unit %d", cmd, unit); break; } MDL_Command_Req(unit, 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 >= 0) && (cd->channelid < ctrl_desc[cd->controller].nbch)) { ctrl_desc[cd->controller].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); }