diff options
Diffstat (limited to 'sys/i4b/layer3/i4b_l4if.c')
| -rw-r--r-- | sys/i4b/layer3/i4b_l4if.c | 339 |
1 files changed, 339 insertions, 0 deletions
diff --git a/sys/i4b/layer3/i4b_l4if.c b/sys/i4b/layer3/i4b_l4if.c new file mode 100644 index 0000000..55d9bb9 --- /dev/null +++ b/sys/i4b/layer3/i4b_l4if.c @@ -0,0 +1,339 @@ +/* + * Copyright (c) 1997, 1998 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 1.17 1998/12/05 18:05:36 hm Exp $ + * + * last edit-date: [Sat Dec 5 18:33:16 1998] + * + *---------------------------------------------------------------------------*/ + +#ifdef __FreeBSD__ +#include "i4bq931.h" +#else +#define NI4BQ931 1 +#endif +#if NI4BQ931 > 0 + +#include <sys/param.h> +#if defined(__FreeBSD__) && __FreeBSD__ >= 3 +#include <sys/ioccom.h> +#else +#include <sys/ioctl.h> +#endif +#include <sys/kernel.h> +#include <sys/systm.h> +#include <sys/mbuf.h> +#include <sys/socket.h> +#include <net/if.h> + +#ifdef __FreeBSD__ +#include <machine/i4b_debug.h> +#include <machine/i4b_ioctl.h> +#include <machine/i4b_cause.h> +#else +#include <i4b/i4b_debug.h> +#include <i4b/i4b_ioctl.h> +#include <i4b/i4b_cause.h> +#endif + +#include <i4b/include/i4b_isdnq931.h> +#include <i4b/include/i4b_l2l3.h> +#include <i4b/include/i4b_l3l4.h> +#include <i4b/include/i4b_mbuf.h> +#include <i4b/include/i4b_global.h> + +#include <i4b/layer3/i4b_l3.h> +#include <i4b/layer3/i4b_l3fsm.h> +#include <i4b/layer3/i4b_q931.h> + +#include <i4b/layer4/i4b_l4.h> + +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, int 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; + + DBGL3(L3_MSG, "i4b_mdl_status_ind", ("unit = %d, status = %d, parm = %d\n", unit, status, parm)); + + switch(status) + { + case STI_ATTACH: + DBGL3(L3_MSG, "i4b_mdl_status_ind", ("STI_ATTACH: attaching unit %d to controller %d\n", 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_SET_TRACE = isic_settrace; + ctrl_desc[nctrl].N_GET_TRACE = isic_gettrace; + 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].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[unit] = nctrl; + + /* increment no. of controllers */ + + nctrl++; + + break; + + case STI_L1STAT: + i4b_l4_l12stat(unit, 1, parm); + DBGL3(L3_MSG, "i4b_mdl_status_ind", ("STI_L1STAT: unit %d layer 1 = %s\n", unit, status ? "up" : "down")); + break; + + case STI_L2STAT: + i4b_l4_l12stat(unit, 2, parm); + DBGL3(L3_MSG, "i4b_mdl_status_ind", ("STI_L2STAT: unit %d layer 2 = %s\n", unit, status ? "up" : "down")); + break; + + case STI_TEIASG: + ctrl_desc[unit].tei = parm; + i4b_l4_teiasg(unit, parm); + DBGL3(L3_MSG, "i4b_mdl_status_ind", ("STI_TEIASG: unit %d TEI = %d = 0x%02x\n", unit, parm, parm)); + break; + + case STI_PDEACT: /* L1 T4 timeout */ + DBGL3(L3_ERR, "i4b_mdl_status_ind", ("STI_PDEACT: unit %d TEI = %d = 0x%02x\n", 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)) + { + if(call_desc[i].cdid != CDID_UNUSED) + sendup++; + } + } + + ctrl_desc[utoc_tab[unit]].dl_est = DL_DOWN; + ctrl_desc[utoc_tab[unit]].bch_state[CHAN_B1] = BCH_ST_FREE; + ctrl_desc[utoc_tab[unit]].bch_state[CHAN_B2] = BCH_ST_FREE; + ctrl_desc[utoc_tab[unit]].tei = -1; + + if(sendup) + i4b_l4_pdeact(unit, sendup); + break; + + case STI_NOL1ACC: /* no outgoing access to S0 */ + DBGL3(L3_ERR, "i4b_mdl_status_ind", ("STI_NOL1ACC: unit %d no outgoing access to S0\n", 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; + ctrl_desc[utoc_tab[unit]].bch_state[CHAN_B1] = BCH_ST_FREE; + ctrl_desc[utoc_tab[unit]].bch_state[CHAN_B2] = BCH_ST_FREE; + ctrl_desc[utoc_tab[unit]].tei = -1; + break; + + default: + DBGL3(L3_ERR, "i4b_mdl_status_ind", ("ERROR, unit %d, unknown status value %d!\n", unit, status)); + break; + } + return(0); +} + +/*---------------------------------------------------------------------------* + * send command to the lower layers + *---------------------------------------------------------------------------*/ +static void +n_mgmt_command(int unit, int cmd, int parm) +{ + int i; + + switch(cmd) + { + case CMR_DOPEN: + DBGL3(L3_MSG, "n_mgmt_command", ("CMR_DOPEN for unit %d\n", 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; + ctrl_desc[utoc_tab[unit]].bch_state[CHAN_B1] = BCH_ST_FREE; + ctrl_desc[utoc_tab[unit]].bch_state[CHAN_B2] = BCH_ST_FREE; + ctrl_desc[utoc_tab[unit]].tei = -1; + break; + + case CMR_DCLOSE: + DBGL3(L3_MSG, "n_mgmt_command", ("CMR_DCLOSE for unit %d\n", unit)); + break; + + default: + 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; + DBGL3(L3_ERR, "n_connect_response", ("unknown response, doing SETUP_RESP_DNTCRE")); + break; + } + + if((cd->channelid == CHAN_B1) || (cd->channelid == CHAN_B2)) + { + ctrl_desc[cd->controller].bch_state[cd->channelid] = chstate; + } + else + { + DBGL3(L3_ERR, "n_connect_response", ("ERROR, invalid channel %d\n", cd->channelid)); + } +} + +/*---------------------------------------------------------------------------* + * 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 */ |
