diff options
Diffstat (limited to 'drivers/isdn/divert/isdn_divert.c')
| -rw-r--r-- | drivers/isdn/divert/isdn_divert.c | 862 |
1 files changed, 862 insertions, 0 deletions
diff --git a/drivers/isdn/divert/isdn_divert.c b/drivers/isdn/divert/isdn_divert.c new file mode 100644 index 0000000..7d97d54 --- /dev/null +++ b/drivers/isdn/divert/isdn_divert.c @@ -0,0 +1,862 @@ +/* $Id: isdn_divert.c,v 1.6.6.3 2001/09/23 22:24:36 kai Exp $ + * + * DSS1 main diversion supplementary handling for i4l. + * + * Copyright 1999 by Werner Cornelius (werner@isdn4linux.de) + * + * This software may be used and distributed according to the terms + * of the GNU General Public License, incorporated herein by reference. + * + */ + +#include <linux/proc_fs.h> +#include <linux/timer.h> +#include <linux/jiffies.h> + +#include "isdn_divert.h" + +/**********************************/ +/* structure keeping calling info */ +/**********************************/ +struct call_struc + { isdn_ctrl ics; /* delivered setup + driver parameters */ + ulong divert_id; /* Id delivered to user */ + unsigned char akt_state; /* actual state */ + char deflect_dest[35]; /* deflection destination */ + struct timer_list timer; /* timer control structure */ + char info[90]; /* device info output */ + struct call_struc *next; /* pointer to next entry */ + struct call_struc *prev; + }; + + +/********************************************/ +/* structure keeping deflection table entry */ +/********************************************/ +struct deflect_struc + { struct deflect_struc *next,*prev; + divert_rule rule; /* used rule */ + }; + + +/*****************************************/ +/* variables for main diversion services */ +/*****************************************/ +/* diversion/deflection processes */ +static struct call_struc *divert_head = NULL; /* head of remembered entrys */ +static ulong next_id = 1; /* next info id */ +static struct deflect_struc *table_head = NULL; +static struct deflect_struc *table_tail = NULL; +static unsigned char extern_wait_max = 4; /* maximum wait in s for external process */ + +DEFINE_SPINLOCK(divert_lock); + +/***************************/ +/* timer callback function */ +/***************************/ +static void deflect_timer_expire(ulong arg) +{ + unsigned long flags; + struct call_struc *cs = (struct call_struc *) arg; + + spin_lock_irqsave(&divert_lock, flags); + del_timer(&cs->timer); /* delete active timer */ + spin_unlock_irqrestore(&divert_lock, flags); + + switch(cs->akt_state) + { case DEFLECT_PROCEED: + cs->ics.command = ISDN_CMD_HANGUP; /* cancel action */ + divert_if.ll_cmd(&cs->ics); + spin_lock_irqsave(&divert_lock, flags); + cs->akt_state = DEFLECT_AUTODEL; /* delete after timeout */ + cs->timer.expires = jiffies + (HZ * AUTODEL_TIME); + add_timer(&cs->timer); + spin_unlock_irqrestore(&divert_lock, flags); + break; + + case DEFLECT_ALERT: + cs->ics.command = ISDN_CMD_REDIR; /* protocol */ + strcpy(cs->ics.parm.setup.phone,cs->deflect_dest); + strcpy(cs->ics.parm.setup.eazmsn,"Testtext delayed"); + divert_if.ll_cmd(&cs->ics); + spin_lock_irqsave(&divert_lock, flags); + cs->akt_state = DEFLECT_AUTODEL; /* delete after timeout */ + cs->timer.expires = jiffies + (HZ * AUTODEL_TIME); + add_timer(&cs->timer); + spin_unlock_irqrestore(&divert_lock, flags); + break; + + case DEFLECT_AUTODEL: + default: + spin_lock_irqsave(&divert_lock, flags); + if (cs->prev) + cs->prev->next = cs->next; /* forward link */ + else + divert_head = cs->next; + if (cs->next) + cs->next->prev = cs->prev; /* back link */ + spin_unlock_irqrestore(&divert_lock, flags); + kfree(cs); + return; + + } /* switch */ +} /* deflect_timer_func */ + + +/*****************************************/ +/* handle call forwarding de/activations */ +/* 0 = deact, 1 = act, 2 = interrogate */ +/*****************************************/ +int cf_command(int drvid, int mode, + u_char proc, char *msn, + u_char service, char *fwd_nr, ulong *procid) +{ unsigned long flags; + int retval,msnlen; + int fwd_len; + char *p,*ielenp,tmp[60]; + struct call_struc *cs; + + if (strchr(msn,'.')) return(-EINVAL); /* subaddress not allowed in msn */ + if ((proc & 0x7F) > 2) return(-EINVAL); + proc &= 3; + p = tmp; + *p++ = 0x30; /* enumeration */ + ielenp = p++; /* remember total length position */ + *p++ = 0xa; /* proc tag */ + *p++ = 1; /* length */ + *p++ = proc & 0x7F; /* procedure to de/activate/interrogate */ + *p++ = 0xa; /* service tag */ + *p++ = 1; /* length */ + *p++ = service; /* service to handle */ + + if (mode == 1) + { if (!*fwd_nr) return(-EINVAL); /* destination missing */ + if (strchr(fwd_nr,'.')) return(-EINVAL); /* subaddress not allowed */ + fwd_len = strlen(fwd_nr); + *p++ = 0x30; /* number enumeration */ + *p++ = fwd_len + 2; /* complete forward to len */ + *p++ = 0x80; /* fwd to nr */ + *p++ = fwd_len; /* length of number */ + strcpy(p,fwd_nr); /* copy number */ + p += fwd_len; /* pointer beyond fwd */ + } /* activate */ + + msnlen = strlen(msn); + *p++ = 0x80; /* msn number */ + if (msnlen > 1) + { *p++ = msnlen; /* length */ + strcpy(p,msn); + p += msnlen; + } + else *p++ = 0; + + *ielenp = p - ielenp - 1; /* set total IE length */ + + /* allocate mem for information struct */ + if (!(cs = kmalloc(sizeof(struct call_struc), GFP_ATOMIC))) + return(-ENOMEM); /* no memory */ + init_timer(&cs->timer); + cs->info[0] = '\0'; + cs->timer.function = deflect_timer_expire; + cs->timer.data = (ulong) cs; /* pointer to own structure */ + cs->ics.driver = drvid; + cs->ics.command = ISDN_CMD_PROT_IO; /* protocol specific io */ + cs->ics.arg = DSS1_CMD_INVOKE; /* invoke supplementary service */ + cs->ics.parm.dss1_io.proc = (mode == 1) ? 7: (mode == 2) ? 11:8; /* operation */ + cs->ics.parm.dss1_io.timeout = 4000; /* from ETS 300 207-1 */ + cs->ics.parm.dss1_io.datalen = p - tmp; /* total len */ + cs->ics.parm.dss1_io.data = tmp; /* start of buffer */ + + spin_lock_irqsave(&divert_lock, flags); + cs->ics.parm.dss1_io.ll_id = next_id++; /* id for callback */ + spin_unlock_irqrestore(&divert_lock, flags); + *procid = cs->ics.parm.dss1_io.ll_id; + + sprintf(cs->info,"%d 0x%lx %s%s 0 %s %02x %d%s%s\n", + (!mode ) ? DIVERT_DEACTIVATE : (mode == 1) ? DIVERT_ACTIVATE : DIVERT_REPORT, + cs->ics.parm.dss1_io.ll_id, + (mode != 2) ? "" : "0 ", + divert_if.drv_to_name(cs->ics.driver), + msn, + service & 0xFF, + proc, + (mode != 1) ? "" : " 0 ", + (mode != 1) ? "" : fwd_nr); + + retval = divert_if.ll_cmd(&cs->ics); /* excute command */ + + if (!retval) + { cs->prev = NULL; + spin_lock_irqsave(&divert_lock, flags); + cs->next = divert_head; + divert_head = cs; + spin_unlock_irqrestore(&divert_lock, flags); + } + else + kfree(cs); + return(retval); +} /* cf_command */ + + +/****************************************/ +/* handle a external deflection command */ +/****************************************/ +int deflect_extern_action(u_char cmd, ulong callid, char *to_nr) +{ struct call_struc *cs; + isdn_ctrl ic; + unsigned long flags; + int i; + + if ((cmd & 0x7F) > 2) return(-EINVAL); /* invalid command */ + cs = divert_head; /* start of parameter list */ + while (cs) + { if (cs->divert_id == callid) break; /* found */ + cs = cs->next; + } /* search entry */ + if (!cs) return(-EINVAL); /* invalid callid */ + + ic.driver = cs->ics.driver; + ic.arg = cs->ics.arg; + i = -EINVAL; + if (cs->akt_state == DEFLECT_AUTODEL) return(i); /* no valid call */ + switch (cmd & 0x7F) + { case 0: /* hangup */ + del_timer(&cs->timer); + ic.command = ISDN_CMD_HANGUP; + i = divert_if.ll_cmd(&ic); + spin_lock_irqsave(&divert_lock, flags); + cs->akt_state = DEFLECT_AUTODEL; /* delete after timeout */ + cs->timer.expires = jiffies + (HZ * AUTODEL_TIME); + add_timer(&cs->timer); + spin_unlock_irqrestore(&divert_lock, flags); + break; + + case 1: /* alert */ + if (cs->akt_state == DEFLECT_ALERT) return(0); + cmd &= 0x7F; /* never wait */ + del_timer(&cs->timer); + ic.command = ISDN_CMD_ALERT; + if ((i = divert_if.ll_cmd(&ic))) + { + spin_lock_irqsave(&divert_lock, flags); + cs->akt_state = DEFLECT_AUTODEL; /* delete after timeout */ + cs->timer.expires = jiffies + (HZ * AUTODEL_TIME); + add_timer(&cs->timer); + spin_unlock_irqrestore(&divert_lock, flags); + } + else + cs->akt_state = DEFLECT_ALERT; + break; + + case 2: /* redir */ + del_timer(&cs->timer); + strcpy(cs->ics.parm.setup.phone, to_nr); + strcpy(cs->ics.parm.setup.eazmsn, "Testtext manual"); + ic.command = ISDN_CMD_REDIR; + if ((i = divert_if.ll_cmd(&ic))) + { + spin_lock_irqsave(&divert_lock, flags); + cs->akt_state = DEFLECT_AUTODEL; /* delete after timeout */ + cs->timer.expires = jiffies + (HZ * AUTODEL_TIME); + add_timer(&cs->timer); + spin_unlock_irqrestore(&divert_lock, flags); + } + else + cs->akt_state = DEFLECT_ALERT; + break; + + } /* switch */ + return(i); +} /* deflect_extern_action */ + +/********************************/ +/* insert a new rule before idx */ +/********************************/ +int insertrule(int idx, divert_rule *newrule) +{ struct deflect_struc *ds,*ds1=NULL; + unsigned long flags; + + if (!(ds = kmalloc(sizeof(struct deflect_struc), + GFP_KERNEL))) + return(-ENOMEM); /* no memory */ + + ds->rule = *newrule; /* set rule */ + + spin_lock_irqsave(&divert_lock, flags); + + if (idx >= 0) + { ds1 = table_head; + while ((ds1) && (idx > 0)) + { idx--; + ds1 = ds1->next; + } + if (!ds1) idx = -1; + } + + if (idx < 0) + { ds->prev = table_tail; /* previous entry */ + ds->next = NULL; /* end of chain */ + if (ds->prev) + ds->prev->next = ds; /* last forward */ + else + table_head = ds; /* is first entry */ + table_tail = ds; /* end of queue */ + } + else + { ds->next = ds1; /* next entry */ + ds->prev = ds1->prev; /* prev entry */ + ds1->prev = ds; /* backward chain old element */ + if (!ds->prev) + table_head = ds; /* first element */ + } + + spin_unlock_irqrestore(&divert_lock, flags); + return(0); +} /* insertrule */ + +/***********************************/ +/* delete the rule at position idx */ +/***********************************/ +int deleterule(int idx) +{ struct deflect_struc *ds,*ds1; + unsigned long flags; + + if (idx < 0) + { spin_lock_irqsave(&divert_lock, flags); + ds = table_head; + table_head = NULL; + table_tail = NULL; + spin_unlock_irqrestore(&divert_lock, flags); + while (ds) + { ds1 = ds; + ds = ds->next; + kfree(ds1); + } + return(0); + } + + spin_lock_irqsave(&divert_lock, flags); + ds = table_head; + + while ((ds) && (idx > 0)) + { idx--; + ds = ds->next; + } + + if (!ds) + { + spin_unlock_irqrestore(&divert_lock, flags); + return(-EINVAL); + } + + if (ds->next) + ds->next->prev = ds->prev; /* backward chain */ + else + table_tail = ds->prev; /* end of chain */ + + if (ds->prev) + ds->prev->next = ds->next; /* forward chain */ + else + table_head = ds->next; /* start of chain */ + + spin_unlock_irqrestore(&divert_lock, flags); + kfree(ds); + return(0); +} /* deleterule */ + +/*******************************************/ +/* get a pointer to a specific rule number */ +/*******************************************/ +divert_rule *getruleptr(int idx) +{ struct deflect_struc *ds = table_head; + + if (idx < 0) return(NULL); + while ((ds) && (idx >= 0)) + { if (!(idx--)) + { return(&ds->rule); + break; + } + ds = ds->next; + } + return(NULL); +} /* getruleptr */ + +/*************************************************/ +/* called from common module on an incoming call */ +/*************************************************/ +static int isdn_divert_icall(isdn_ctrl *ic) +{ int retval = 0; + unsigned long flags; + struct call_struc *cs = NULL; + struct deflect_struc *dv; + char *p,*p1; + u_char accept; + + /* first check the internal deflection table */ + for (dv = table_head; dv ; dv = dv->next ) + { /* scan table */ + if (((dv->rule.callopt == 1) && (ic->command == ISDN_STAT_ICALLW)) || + ((dv->rule.callopt == 2) && (ic->command == ISDN_STAT_ICALL))) + continue; /* call option check */ + if (!(dv->rule.drvid & (1L << ic->driver))) + continue; /* driver not matching */ + if ((dv->rule.si1) && (dv->rule.si1 != ic->parm.setup.si1)) + continue; /* si1 not matching */ + if ((dv->rule.si2) && (dv->rule.si2 != ic->parm.setup.si2)) + continue; /* si2 not matching */ + + p = dv->rule.my_msn; + p1 = ic->parm.setup.eazmsn; + accept = 0; + while (*p) + { /* complete compare */ + if (*p == '-') + { accept = 1; /* call accepted */ + break; + } + if (*p++ != *p1++) + break; /* not accepted */ + if ((!*p) && (!*p1)) + accept = 1; + } /* complete compare */ + if (!accept) continue; /* not accepted */ + + if ((strcmp(dv->rule.caller,"0")) || (ic->parm.setup.phone[0])) + { p = dv->rule.caller; + p1 = ic->parm.setup.phone; + accept = 0; + while (*p) + { /* complete compare */ + if (*p == '-') + { accept = 1; /* call accepted */ + break; + } + if (*p++ != *p1++) + break; /* not accepted */ + if ((!*p) && (!*p1)) + accept = 1; + } /* complete compare */ + if (!accept) continue; /* not accepted */ + } + + switch (dv->rule.action) + { case DEFLECT_IGNORE: + return(0); + break; + + case DEFLECT_ALERT: + case DEFLECT_PROCEED: + case DEFLECT_REPORT: + case DEFLECT_REJECT: + if (dv->rule.action == DEFLECT_PROCEED) + if ((!if_used) || ((!extern_wait_max) && (!dv->rule.waittime))) + return(0); /* no external deflection needed */ + if (!(cs = kmalloc(sizeof(struct call_struc), GFP_ATOMIC))) + return(0); /* no memory */ + init_timer(&cs->timer); + cs->info[0] = '\0'; + cs->timer.function = deflect_timer_expire; + cs->timer.data = (ulong) cs; /* pointer to own structure */ + + cs->ics = *ic; /* copy incoming data */ + if (!cs->ics.parm.setup.phone[0]) strcpy(cs->ics.parm.setup.phone,"0"); + if (!cs->ics.parm.setup.eazmsn[0]) strcpy(cs->ics.parm.setup.eazmsn,"0"); + cs->ics.parm.setup.screen = dv->rule.screen; + if (dv->rule.waittime) + cs->timer.expires = jiffies + (HZ * dv->rule.waittime); + else + if (dv->rule.action == DEFLECT_PROCEED) + cs->timer.expires = jiffies + (HZ * extern_wait_max); + else + cs->timer.expires = 0; + cs->akt_state = dv->rule.action; + spin_lock_irqsave(&divert_lock, flags); + cs->divert_id = next_id++; /* new sequence number */ + spin_unlock_irqrestore(&divert_lock, flags); + cs->prev = NULL; + if (cs->akt_state == DEFLECT_ALERT) + { strcpy(cs->deflect_dest,dv->rule.to_nr); + if (!cs->timer.expires) + { strcpy(ic->parm.setup.eazmsn,"Testtext direct"); + ic->parm.setup.screen = dv->rule.screen; + strcpy(ic->parm.setup.phone,dv->rule.to_nr); + cs->akt_state = DEFLECT_AUTODEL; /* delete after timeout */ + cs->timer.expires = jiffies + (HZ * AUTODEL_TIME); + retval = 5; + } + else + retval = 1; /* alerting */ + } + else + { cs->deflect_dest[0] = '\0'; + retval = 4; /* only proceed */ + } + sprintf(cs->info,"%d 0x%lx %s %s %s %s 0x%x 0x%x %d %d %s\n", + cs->akt_state, + cs->divert_id, + divert_if.drv_to_name(cs->ics.driver), + (ic->command == ISDN_STAT_ICALLW) ? "1":"0", + cs->ics.parm.setup.phone, + cs->ics.parm.setup.eazmsn, + cs->ics.parm.setup.si1, + cs->ics.parm.setup.si2, + cs->ics.parm.setup.screen, + dv->rule.waittime, + cs->deflect_dest); + if ((dv->rule.action == DEFLECT_REPORT) || + (dv->rule.action == DEFLECT_REJECT)) + { put_info_buffer(cs->info); + kfree(cs); /* remove */ + return((dv->rule.action == DEFLECT_REPORT) ? 0:2); /* nothing to do */ + } + break; + + default: + return(0); /* ignore call */ + break; + } /* switch action */ + break; + } /* scan_table */ + + if (cs) + { cs->prev = NULL; + spin_lock_irqsave(&divert_lock, flags); + cs->next = divert_head; + divert_head = cs; + if (cs->timer.expires) add_timer(&cs->timer); + spin_unlock_irqrestore(&divert_lock, flags); + + put_info_buffer(cs->info); + return(retval); + } + else + return(0); +} /* isdn_divert_icall */ + + +void deleteprocs(void) +{ struct call_struc *cs, *cs1; + unsigned long flags; + + spin_lock_irqsave(&divert_lock, flags); + cs = divert_head; + divert_head = NULL; + while (cs) + { del_timer(&cs->timer); + cs1 = cs; + cs = cs->next; + kfree(cs1); + } + spin_unlock_irqrestore(&divert_lock, flags); +} /* deleteprocs */ + +/****************************************************/ +/* put a address including address type into buffer */ +/****************************************************/ +static int put_address(char *st, u_char *p, int len) +{ u_char retval = 0; + u_char adr_typ = 0; /* network standard */ + + if (len < 2) return(retval); + if (*p == 0xA1) + { retval = *(++p) + 2; /* total length */ + if (retval > len) return(0); /* too short */ + len = retval - 2; /* remaining length */ + if (len < 3) return(0); + if ((*(++p) != 0x0A) || (*(++p) != 1)) return(0); + adr_typ = *(++p); + len -= 3; + p++; + if (len < 2) return(0); + if (*p++ != 0x12) return(0); + if (*p > len) return(0); /* check number length */ + len = *p++; + } + else + if (*p == 0x80) + { retval = *(++p) + 2; /* total length */ + if (retval > len) return(0); + len = retval - 2; + p++; + } + else + return(0); /* invalid address information */ + + sprintf(st,"%d ",adr_typ); + st += strlen(st); + if (!len) + *st++ = '-'; + else + while (len--) + *st++ = *p++; + *st = '\0'; + return(retval); +} /* put_address */ + +/*************************************/ +/* report a successful interrogation */ +/*************************************/ +static int interrogate_success(isdn_ctrl *ic, struct call_struc *cs) +{ char *src = ic->parm.dss1_io.data; + int restlen = ic->parm.dss1_io.datalen; + int cnt = 1; + u_char n,n1; + char st[90], *p, *stp; + + if (restlen < 2) return(-100); /* frame too short */ + if (*src++ != 0x30) return(-101); + if ((n = *src++) > 0x81) return(-102); /* invalid length field */ + restlen -= 2; /* remaining bytes */ + if (n == 0x80) + { if (restlen < 2) return(-103); + if ((*(src+restlen-1)) || (*(src+restlen-2))) return(-104); + restlen -= 2; + } + else + if ( n == 0x81) + { n = *src++; + restlen--; + if (n > restlen) return(-105); + restlen = n; + } + else + if (n > restlen) return(-106); + else + restlen = n; /* standard format */ + if (restlen < 3) return(-107); /* no procedure */ + if ((*src++ != 2) || (*src++ != 1) || (*src++ != 0x0B)) return(-108); + restlen -= 3; + if (restlen < 2) return(-109); /* list missing */ + if (*src == 0x31) + { src++; + if ((n = *src++) > 0x81) return(-110); /* invalid length field */ + restlen -= 2; /* remaining bytes */ + if (n == 0x80) + { if (restlen < 2) return(-111); + if ((*(src+restlen-1)) || (*(src+restlen-2))) return(-112); + restlen -= 2; + } + else + if ( n == 0x81) + { n = *src++; + restlen--; + if (n > restlen) return(-113); + restlen = n; + } + else + if (n > restlen) return(-114); + else + restlen = n; /* standard format */ + } /* result list header */ + + while (restlen >= 2) + { stp = st; + sprintf(stp,"%d 0x%lx %d %s ",DIVERT_REPORT, ic->parm.dss1_io.ll_id, + cnt++,divert_if.drv_to_name(ic->driver)); + stp += strlen(stp); + if (*src++ != 0x30) return(-115); /* invalid enum */ + n = *src++; + restlen -= 2; + if (n > restlen) return(-116); /* enum length wrong */ + restlen -= n; + p = src; /* one entry */ + src += n; + if (!(n1 = put_address(stp,p,n & 0xFF))) continue; + stp += strlen(stp); + p += n1; + n -= n1; + if (n < 6) continue; /* no service and proc */ + if ((*p++ != 0x0A) || (*p++ != 1)) continue; + sprintf(stp," 0x%02x ",(*p++) & 0xFF); + stp += strlen(stp); + if ((*p++ != 0x0A) || (*p++ != 1)) continue; + sprintf(stp,"%d ",(*p++) & 0xFF); + stp += strlen(stp); + n -= 6; + if (n > 2) + { if (*p++ != 0x30) continue; + if (*p > (n-2)) continue; + n = *p++; + if (!(n1 = put_address(stp,p,n & 0xFF))) continue; + stp += strlen(stp); + } + sprintf(stp,"\n"); + put_info_buffer(st); + } /* while restlen */ + if (restlen) return(-117); + return(0); +} /* interrogate_success */ + +/*********************************************/ +/* callback for protocol specific extensions */ +/*********************************************/ +static int prot_stat_callback(isdn_ctrl *ic) +{ struct call_struc *cs, *cs1; + int i; + unsigned long flags; + + cs = divert_head; /* start of list */ + cs1 = NULL; + while (cs) + { if (ic->driver == cs->ics.driver) + { switch (cs->ics.arg) + { case DSS1_CMD_INVOKE: + if ((cs->ics.parm.dss1_io.ll_id == ic->parm.dss1_io.ll_id) && + (cs->ics.parm.dss1_io.hl_id == ic->parm.dss1_io.hl_id)) + { switch (ic->arg) + { case DSS1_STAT_INVOKE_ERR: + sprintf(cs->info,"128 0x%lx 0x%x\n", + ic->parm.dss1_io.ll_id, + ic->parm.dss1_io.timeout); + put_info_buffer(cs->info); + break; + + case DSS1_STAT_INVOKE_RES: + switch (cs->ics.parm.dss1_io.proc) + { case 7: + case 8: + put_info_buffer(cs->info); + break; + + case 11: + i = interrogate_success(ic,cs); + if (i) + sprintf(cs->info,"%d 0x%lx %d\n",DIVERT_REPORT, + ic->parm.dss1_io.ll_id,i); + put_info_buffer(cs->info); + break; + + default: + printk(KERN_WARNING "dss1_divert: unknown proc %d\n",cs->ics.parm.dss1_io.proc); + break; + } + + + break; + + default: + printk(KERN_WARNING "dss1_divert unknown invoke answer %lx\n",ic->arg); + break; + } + cs1 = cs; /* remember structure */ + cs = NULL; + continue; /* abort search */ + } /* id found */ + break; + + case DSS1_CMD_INVOKE_ABORT: + printk(KERN_WARNING "dss1_divert unhandled invoke abort\n"); + break; + + default: + printk(KERN_WARNING "dss1_divert unknown cmd 0x%lx\n",cs->ics.arg); + break; + } /* switch ics.arg */ + cs = cs->next; + } /* driver ok */ + } + + if (!cs1) + { printk(KERN_WARNING "dss1_divert unhandled process\n"); + return(0); + } + + if (cs1->ics.driver == -1) + { + spin_lock_irqsave(&divert_lock, flags); + del_timer(&cs1->timer); + if (cs1->prev) + cs1->prev->next = cs1->next; /* forward link */ + else + divert_head = cs1->next; + if (cs1->next) + cs1->next->prev = cs1->prev; /* back link */ + spin_unlock_irqrestore(&divert_lock, flags); + kfree(cs1); + } + + return(0); +} /* prot_stat_callback */ + + +/***************************/ +/* status callback from HL */ +/***************************/ +static int isdn_divert_stat_callback(isdn_ctrl *ic) +{ struct call_struc *cs, *cs1; + unsigned long flags; + int retval; + + retval = -1; + cs = divert_head; /* start of list */ + while (cs) + { if ((ic->driver == cs->ics.driver) && (ic->arg == cs->ics.arg)) + { switch (ic->command) + { case ISDN_STAT_DHUP: + sprintf(cs->info,"129 0x%lx\n",cs->divert_id); + del_timer(&cs->timer); + cs->ics.driver = -1; + break; + + case ISDN_STAT_CAUSE: + sprintf(cs->info,"130 0x%lx %s\n",cs->divert_id,ic->parm.num); + break; + + case ISDN_STAT_REDIR: + sprintf(cs->info,"131 0x%lx\n",cs->divert_id); + del_timer(&cs->timer); + cs->ics.driver = -1; + break; + + default: + sprintf(cs->info,"999 0x%lx 0x%x\n",cs->divert_id,(int)(ic->command)); + break; + } + put_info_buffer(cs->info); + retval = 0; + } + cs1 = cs; + cs = cs->next; + if (cs1->ics.driver == -1) + { + spin_lock_irqsave(&divert_lock, flags); + if (cs1->prev) + cs1->prev->next = cs1->next; /* forward link */ + else + divert_head = cs1->next; + if (cs1->next) + cs1->next->prev = cs1->prev; /* back link */ + spin_unlock_irqrestore(&divert_lock, flags); + kfree(cs1); + } + } + return(retval); /* not found */ +} /* isdn_divert_stat_callback */ + + +/********************/ +/* callback from ll */ +/********************/ +int ll_callback(isdn_ctrl *ic) +{ + switch (ic->command) + { case ISDN_STAT_ICALL: + case ISDN_STAT_ICALLW: + return(isdn_divert_icall(ic)); + break; + + case ISDN_STAT_PROT: + if ((ic->arg & 0xFF) == ISDN_PTYPE_EURO) + { if (ic->arg != DSS1_STAT_INVOKE_BRD) + return(prot_stat_callback(ic)); + else + return(0); /* DSS1 invoke broadcast */ + } + else + return(-1); /* protocol not euro */ + + default: + return(isdn_divert_stat_callback(ic)); + } +} /* ll_callback */ + |
