q3k/linux
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
linux/drivers/isdn/capi/capidrv.c
Karsten Keil eb36f4fc01 fix oops on rmmod capidrv 
Fix overwriting the stack with the version string
(it is currently 10 bytes + zero) when unloading the
capidrv module. Safeguard against overwriting it
should the version string grow in the future.

Should fix Kernel Bug Tracker Bug 9696.

Signed-off-by: Gerd v. Egidy <gerd.von.egidy@intra2net.com>
Acked-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-01-25 08:26:10 -08:00

2355 lines
63 KiB
C
Raw Blame History

/* $Id: capidrv.c,v 1.1.2.2 2004/01/12 23:17:24 keil Exp $
*
* ISDN4Linux Driver, using capi20 interface (kernelcapi)
*
* Copyright 1997 by Carsten Paeth <calle@calle.de>
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*
*/
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/major.h>
#include <linux/slab.h>
#include <linux/fcntl.h>
#include <linux/fs.h>
#include <linux/signal.h>
#include <linux/mm.h>
#include <linux/timer.h>
#include <linux/wait.h>
#include <linux/skbuff.h>
#include <linux/isdn.h>
#include <linux/isdnif.h>
#include <linux/proc_fs.h>
#include <linux/capi.h>
#include <linux/kernelcapi.h>
#include <linux/ctype.h>
#include <linux/init.h>
#include <linux/moduleparam.h>
#include <linux/isdn/capiutil.h>
#include <linux/isdn/capicmd.h>
#include "capidrv.h"
static char *revision = "$Revision: 1.1.2.2 $";
static int debugmode = 0;
MODULE_DESCRIPTION("CAPI4Linux: Interface to ISDN4Linux");
MODULE_AUTHOR("Carsten Paeth");
MODULE_LICENSE("GPL");
module_param(debugmode, uint, 0);
/* -------- type definitions ----------------------------------------- */
struct capidrv_contr {
struct capidrv_contr *next;
struct module *owner;
u32 contrnr;
char name[20];
/*
* for isdn4linux
*/
isdn_if interface;
int myid;
/*
* LISTEN state
*/
int state;
u32 cipmask;
u32 cipmask2;
struct timer_list listentimer;
/*
* ID of capi message sent
*/
u16 msgid;
/*
* B-Channels
*/
int nbchan;
struct capidrv_bchan {
struct capidrv_contr *contr;
u8 msn[ISDN_MSNLEN];
int l2;
int l3;
u8 num[ISDN_MSNLEN];
u8 mynum[ISDN_MSNLEN];
int si1;
int si2;
int incoming;
int disconnecting;
struct capidrv_plci {
struct capidrv_plci *next;
u32 plci;
u32 ncci; /* ncci for CONNECT_ACTIVE_IND */
u16 msgid; /* to identfy CONNECT_CONF */
int chan;
int state;
int leasedline;
struct capidrv_ncci {
struct capidrv_ncci *next;
struct capidrv_plci *plcip;
u32 ncci;
u16 msgid; /* to identfy CONNECT_B3_CONF */
int chan;
int state;
int oldstate;
/* */
u16 datahandle;
struct ncci_datahandle_queue {
struct ncci_datahandle_queue *next;
u16 datahandle;
int len;
} *ackqueue;
} *ncci_list;
} *plcip;
struct capidrv_ncci *nccip;
} *bchans;
struct capidrv_plci *plci_list;
/* for q931 data */
u8 q931_buf[4096];
u8 *q931_read;
u8 *q931_write;
u8 *q931_end;
};
struct capidrv_data {
struct capi20_appl ap;
int ncontr;
struct capidrv_contr *contr_list;
};
typedef struct capidrv_plci capidrv_plci;
typedef struct capidrv_ncci capidrv_ncci;
typedef struct capidrv_contr capidrv_contr;
typedef struct capidrv_data capidrv_data;
typedef struct capidrv_bchan capidrv_bchan;
/* -------- data definitions ----------------------------------------- */
static capidrv_data global;
static DEFINE_SPINLOCK(global_lock);
static void handle_dtrace_data(capidrv_contr *card,
int send, int level2, u8 *data, u16 len);
/* -------- convert functions ---------------------------------------- */
static inline u32 b1prot(int l2, int l3)
{
switch (l2) {
case ISDN_PROTO_L2_X75I:
case ISDN_PROTO_L2_X75UI:
case ISDN_PROTO_L2_X75BUI:
return 0;
case ISDN_PROTO_L2_HDLC:
default:
return 0;
case ISDN_PROTO_L2_TRANS:
return 1;
case ISDN_PROTO_L2_V11096:
case ISDN_PROTO_L2_V11019:
case ISDN_PROTO_L2_V11038:
return 2;
case ISDN_PROTO_L2_FAX:
return 4;
case ISDN_PROTO_L2_MODEM:
return 8;
}
}
static inline u32 b2prot(int l2, int l3)
{
switch (l2) {
case ISDN_PROTO_L2_X75I:
case ISDN_PROTO_L2_X75UI:
case ISDN_PROTO_L2_X75BUI:
default:
return 0;
case ISDN_PROTO_L2_HDLC:
case ISDN_PROTO_L2_TRANS:
case ISDN_PROTO_L2_V11096:
case ISDN_PROTO_L2_V11019:
case ISDN_PROTO_L2_V11038:
case ISDN_PROTO_L2_MODEM:
return 1;
case ISDN_PROTO_L2_FAX:
return 4;
}
}
static inline u32 b3prot(int l2, int l3)
{
switch (l2) {
case ISDN_PROTO_L2_X75I:
case ISDN_PROTO_L2_X75UI:
case ISDN_PROTO_L2_X75BUI:
case ISDN_PROTO_L2_HDLC:
case ISDN_PROTO_L2_TRANS:
case ISDN_PROTO_L2_V11096:
case ISDN_PROTO_L2_V11019:
case ISDN_PROTO_L2_V11038:
case ISDN_PROTO_L2_MODEM:
default:
return 0;
case ISDN_PROTO_L2_FAX:
return 4;
}
}
static _cstruct b1config_async_v110(u16 rate)
{
/* CAPI-Spec "B1 Configuration" */
static unsigned char buf[9];
buf[0] = 8; /* len */
/* maximum bitrate */
buf[1] = rate & 0xff; buf[2] = (rate >> 8) & 0xff;
buf[3] = 8; buf[4] = 0; /* 8 bits per character */
buf[5] = 0; buf[6] = 0; /* parity none */
buf[7] = 0; buf[8] = 0; /* 1 stop bit */
return buf;
}
static _cstruct b1config(int l2, int l3)
{
switch (l2) {
case ISDN_PROTO_L2_X75I:
case ISDN_PROTO_L2_X75UI:
case ISDN_PROTO_L2_X75BUI:
case ISDN_PROTO_L2_HDLC:
case ISDN_PROTO_L2_TRANS:
default:
return NULL;
case ISDN_PROTO_L2_V11096:
return b1config_async_v110(9600);
case ISDN_PROTO_L2_V11019:
return b1config_async_v110(19200);
case ISDN_PROTO_L2_V11038:
return b1config_async_v110(38400);
}
}
static inline u16 si2cip(u8 si1, u8 si2)
{
static const u8 cip[17][5] =
{
/* 0 1 2 3 4 */
{0, 0, 0, 0, 0}, /*0 */
{16, 16, 4, 26, 16}, /*1 */
{17, 17, 17, 4, 4}, /*2 */
{2, 2, 2, 2, 2}, /*3 */
{18, 18, 18, 18, 18}, /*4 */
{2, 2, 2, 2, 2}, /*5 */
{0, 0, 0, 0, 0}, /*6 */
{2, 2, 2, 2, 2}, /*7 */
{2, 2, 2, 2, 2}, /*8 */
{21, 21, 21, 21, 21}, /*9 */
{19, 19, 19, 19, 19}, /*10 */
{0, 0, 0, 0, 0}, /*11 */
{0, 0, 0, 0, 0}, /*12 */
{0, 0, 0, 0, 0}, /*13 */
{0, 0, 0, 0, 0}, /*14 */
{22, 22, 22, 22, 22}, /*15 */
{27, 27, 27, 28, 27} /*16 */
};
if (si1 > 16)
si1 = 0;
if (si2 > 4)
si2 = 0;
return (u16) cip[si1][si2];
}
static inline u8 cip2si1(u16 cipval)
{
static const u8 si[32] =
{7, 1, 7, 7, 1, 1, 7, 7, /*0-7 */
7, 1, 0, 0, 0, 0, 0, 0, /*8-15 */
1, 2, 4, 10, 9, 9, 15, 7, /*16-23 */
7, 7, 1, 16, 16, 0, 0, 0}; /*24-31 */
if (cipval > 31)
cipval = 0; /* .... */
return si[cipval];
}
static inline u8 cip2si2(u16 cipval)
{
static const u8 si[32] =
{0, 0, 0, 0, 2, 3, 0, 0, /*0-7 */
0, 3, 0, 0, 0, 0, 0, 0, /*8-15 */
1, 2, 0, 0, 9, 0, 0, 0, /*16-23 */
0, 0, 3, 2, 3, 0, 0, 0}; /*24-31 */
if (cipval > 31)
cipval = 0; /* .... */
return si[cipval];
}
/* -------- controller management ------------------------------------- */
static inline capidrv_contr *findcontrbydriverid(int driverid)
{
unsigned long flags;
capidrv_contr *p;
spin_lock_irqsave(&global_lock, flags);
for (p = global.contr_list; p; p = p->next)
if (p->myid == driverid)
break;
spin_unlock_irqrestore(&global_lock, flags);
return p;
}
static capidrv_contr *findcontrbynumber(u32 contr)
{
unsigned long flags;
capidrv_contr *p = global.contr_list;
spin_lock_irqsave(&global_lock, flags);
for (p = global.contr_list; p; p = p->next)
if (p->contrnr == contr)
break;
spin_unlock_irqrestore(&global_lock, flags);
return p;
}
/* -------- plci management ------------------------------------------ */
static capidrv_plci *new_plci(capidrv_contr * card, int chan)
{
capidrv_plci *plcip;
plcip = kzalloc(sizeof(capidrv_plci), GFP_ATOMIC);
if (plcip == 0)
return NULL;
plcip->state = ST_PLCI_NONE;
plcip->plci = 0;
plcip->msgid = 0;
plcip->chan = chan;
plcip->next = card->plci_list;
card->plci_list = plcip;
card->bchans[chan].plcip = plcip;
return plcip;
}
static capidrv_plci *find_plci_by_plci(capidrv_contr * card, u32 plci)
{
capidrv_plci *p;
for (p = card->plci_list; p; p = p->next)
if (p->plci == plci)
return p;
return NULL;
}
static capidrv_plci *find_plci_by_msgid(capidrv_contr * card, u16 msgid)
{
capidrv_plci *p;
for (p = card->plci_list; p; p = p->next)
if (p->msgid == msgid)
return p;
return NULL;
}
static capidrv_plci *find_plci_by_ncci(capidrv_contr * card, u32 ncci)
{
capidrv_plci *p;
for (p = card->plci_list; p; p = p->next)
if (p->plci == (ncci & 0xffff))
return p;
return NULL;
}
static void free_plci(capidrv_contr * card, capidrv_plci * plcip)
{
capidrv_plci **pp;
for (pp = &card->plci_list; *pp; pp = &(*pp)->next) {
if (*pp == plcip) {
*pp = (*pp)->next;
card->bchans[plcip->chan].plcip = NULL;
card->bchans[plcip->chan].disconnecting = 0;
card->bchans[plcip->chan].incoming = 0;
kfree(plcip);
return;
}
}
printk(KERN_ERR "capidrv-%d: free_plci %p (0x%x) not found, Huh?\n",
card->contrnr, plcip, plcip->plci);
}
/* -------- ncci management ------------------------------------------ */
static inline capidrv_ncci *new_ncci(capidrv_contr * card,
capidrv_plci * plcip,
u32 ncci)
{
capidrv_ncci *nccip;
nccip = kzalloc(sizeof(capidrv_ncci), GFP_ATOMIC);
if (nccip == 0)
return NULL;
nccip->ncci = ncci;
nccip->state = ST_NCCI_NONE;
nccip->plcip = plcip;
nccip->chan = plcip->chan;
nccip->datahandle = 0;
nccip->next = plcip->ncci_list;
plcip->ncci_list = nccip;
card->bchans[plcip->chan].nccip = nccip;
return nccip;
}
static inline capidrv_ncci *find_ncci(capidrv_contr * card, u32 ncci)
{
capidrv_plci *plcip;
capidrv_ncci *p;
if ((plcip = find_plci_by_ncci(card, ncci)) == 0)
return NULL;
for (p = plcip->ncci_list; p; p = p->next)
if (p->ncci == ncci)
return p;
return NULL;
}
static inline capidrv_ncci *find_ncci_by_msgid(capidrv_contr * card,
u32 ncci, u16 msgid)
{
capidrv_plci *plcip;
capidrv_ncci *p;
if ((plcip = find_plci_by_ncci(card, ncci)) == 0)
return NULL;
for (p = plcip->ncci_list; p; p = p->next)
if (p->msgid == msgid)
return p;
return NULL;
}
static void free_ncci(capidrv_contr * card, struct capidrv_ncci *nccip)
{
struct capidrv_ncci **pp;
for (pp = &(nccip->plcip->ncci_list); *pp; pp = &(*pp)->next) {
if (*pp == nccip) {
*pp = (*pp)->next;
break;
}
}
card->bchans[nccip->chan].nccip = NULL;
kfree(nccip);
}
static int capidrv_add_ack(struct capidrv_ncci *nccip,
u16 datahandle, int len)
{
struct ncci_datahandle_queue *n, **pp;
n = (struct ncci_datahandle_queue *)
kmalloc(sizeof(struct ncci_datahandle_queue), GFP_ATOMIC);
if (!n) {
printk(KERN_ERR "capidrv: kmalloc ncci_datahandle failed\n");
return -1;
}
n->next = NULL;
n->datahandle = datahandle;
n->len = len;
for (pp = &nccip->ackqueue; *pp; pp = &(*pp)->next) ;
*pp = n;
return 0;
}
static int capidrv_del_ack(struct capidrv_ncci *nccip, u16 datahandle)
{
struct ncci_datahandle_queue **pp, *p;
int len;
for (pp = &nccip->ackqueue; *pp; pp = &(*pp)->next) {
if ((*pp)->datahandle == datahandle) {
p = *pp;
len = p->len;
*pp = (*pp)->next;
kfree(p);
return len;
}
}
return -1;
}
/* -------- convert and send capi message ---------------------------- */
static void send_message(capidrv_contr * card, _cmsg * cmsg)
{
struct sk_buff *skb;
size_t len;
capi_cmsg2message(cmsg, cmsg->buf);
len = CAPIMSG_LEN(cmsg->buf);
skb = alloc_skb(len, GFP_ATOMIC);
if (!skb) {
printk(KERN_ERR "capidrv::send_message: can't allocate mem\n");
return;
}
memcpy(skb_put(skb, len), cmsg->buf, len);
if (capi20_put_message(&global.ap, skb) != CAPI_NOERROR)
kfree_skb(skb);
}
/* -------- state machine -------------------------------------------- */
struct listenstatechange {
int actstate;
int nextstate;
int event;
};
static struct listenstatechange listentable[] =
{
{ST_LISTEN_NONE, ST_LISTEN_WAIT_CONF, EV_LISTEN_REQ},
{ST_LISTEN_ACTIVE, ST_LISTEN_ACTIVE_WAIT_CONF, EV_LISTEN_REQ},
{ST_LISTEN_WAIT_CONF, ST_LISTEN_NONE, EV_LISTEN_CONF_ERROR},
{ST_LISTEN_ACTIVE_WAIT_CONF, ST_LISTEN_ACTIVE, EV_LISTEN_CONF_ERROR},
{ST_LISTEN_WAIT_CONF, ST_LISTEN_NONE, EV_LISTEN_CONF_EMPTY},
{ST_LISTEN_ACTIVE_WAIT_CONF, ST_LISTEN_NONE, EV_LISTEN_CONF_EMPTY},
{ST_LISTEN_WAIT_CONF, ST_LISTEN_ACTIVE, EV_LISTEN_CONF_OK},
{ST_LISTEN_ACTIVE_WAIT_CONF, ST_LISTEN_ACTIVE, EV_LISTEN_CONF_OK},
{},
};
static void listen_change_state(capidrv_contr * card, int event)
{
struct listenstatechange *p = listentable;
while (p->event) {
if (card->state == p->actstate && p->event == event) {
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: listen_change_state %d -> %d\n",
card->contrnr, card->state, p->nextstate);
card->state = p->nextstate;
return;
}
p++;
}
printk(KERN_ERR "capidrv-%d: listen_change_state state=%d event=%d ????\n",
card->contrnr, card->state, event);
}
/* ------------------------------------------------------------------ */
static void p0(capidrv_contr * card, capidrv_plci * plci)
{
isdn_ctrl cmd;
card->bchans[plci->chan].contr = NULL;
cmd.command = ISDN_STAT_DHUP;
cmd.driver = card->myid;
cmd.arg = plci->chan;
card->interface.statcallb(&cmd);
free_plci(card, plci);
}
/* ------------------------------------------------------------------ */
struct plcistatechange {
int actstate;
int nextstate;
int event;
void (*changefunc) (capidrv_contr * card, capidrv_plci * plci);
};
static struct plcistatechange plcitable[] =
{
/* P-0 */
{ST_PLCI_NONE, ST_PLCI_OUTGOING, EV_PLCI_CONNECT_REQ, NULL},
{ST_PLCI_NONE, ST_PLCI_ALLOCATED, EV_PLCI_FACILITY_IND_UP, NULL},
{ST_PLCI_NONE, ST_PLCI_INCOMING, EV_PLCI_CONNECT_IND, NULL},
{ST_PLCI_NONE, ST_PLCI_RESUMEING, EV_PLCI_RESUME_REQ, NULL},
/* P-0.1 */
{ST_PLCI_OUTGOING, ST_PLCI_NONE, EV_PLCI_CONNECT_CONF_ERROR, p0},
{ST_PLCI_OUTGOING, ST_PLCI_ALLOCATED, EV_PLCI_CONNECT_CONF_OK, NULL},
/* P-1 */
{ST_PLCI_ALLOCATED, ST_PLCI_ACTIVE, EV_PLCI_CONNECT_ACTIVE_IND, NULL},
{ST_PLCI_ALLOCATED, ST_PLCI_DISCONNECTING, EV_PLCI_DISCONNECT_REQ, NULL},
{ST_PLCI_ALLOCATED, ST_PLCI_DISCONNECTING, EV_PLCI_FACILITY_IND_DOWN, NULL},
{ST_PLCI_ALLOCATED, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, NULL},
/* P-ACT */
{ST_PLCI_ACTIVE, ST_PLCI_DISCONNECTING, EV_PLCI_DISCONNECT_REQ, NULL},
{ST_PLCI_ACTIVE, ST_PLCI_DISCONNECTING, EV_PLCI_FACILITY_IND_DOWN, NULL},
{ST_PLCI_ACTIVE, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, NULL},
{ST_PLCI_ACTIVE, ST_PLCI_HELD, EV_PLCI_HOLD_IND, NULL},
{ST_PLCI_ACTIVE, ST_PLCI_DISCONNECTING, EV_PLCI_SUSPEND_IND, NULL},
/* P-2 */
{ST_PLCI_INCOMING, ST_PLCI_DISCONNECTING, EV_PLCI_CONNECT_REJECT, NULL},
{ST_PLCI_INCOMING, ST_PLCI_FACILITY_IND, EV_PLCI_FACILITY_IND_UP, NULL},
{ST_PLCI_INCOMING, ST_PLCI_ACCEPTING, EV_PLCI_CONNECT_RESP, NULL},
{ST_PLCI_INCOMING, ST_PLCI_DISCONNECTING, EV_PLCI_DISCONNECT_REQ, NULL},
{ST_PLCI_INCOMING, ST_PLCI_DISCONNECTING, EV_PLCI_FACILITY_IND_DOWN, NULL},
{ST_PLCI_INCOMING, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, NULL},
{ST_PLCI_INCOMING, ST_PLCI_DISCONNECTING, EV_PLCI_CD_IND, NULL},
/* P-3 */
{ST_PLCI_FACILITY_IND, ST_PLCI_DISCONNECTING, EV_PLCI_CONNECT_REJECT, NULL},
{ST_PLCI_FACILITY_IND, ST_PLCI_ACCEPTING, EV_PLCI_CONNECT_ACTIVE_IND, NULL},
{ST_PLCI_FACILITY_IND, ST_PLCI_DISCONNECTING, EV_PLCI_DISCONNECT_REQ, NULL},
{ST_PLCI_FACILITY_IND, ST_PLCI_DISCONNECTING, EV_PLCI_FACILITY_IND_DOWN, NULL},
{ST_PLCI_FACILITY_IND, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, NULL},
/* P-4 */
{ST_PLCI_ACCEPTING, ST_PLCI_ACTIVE, EV_PLCI_CONNECT_ACTIVE_IND, NULL},
{ST_PLCI_ACCEPTING, ST_PLCI_DISCONNECTING, EV_PLCI_DISCONNECT_REQ, NULL},
{ST_PLCI_ACCEPTING, ST_PLCI_DISCONNECTING, EV_PLCI_FACILITY_IND_DOWN, NULL},
{ST_PLCI_ACCEPTING, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, NULL},
/* P-5 */
{ST_PLCI_DISCONNECTING, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, NULL},
/* P-6 */
{ST_PLCI_DISCONNECTED, ST_PLCI_NONE, EV_PLCI_DISCONNECT_RESP, p0},
/* P-0.Res */
{ST_PLCI_RESUMEING, ST_PLCI_NONE, EV_PLCI_RESUME_CONF_ERROR, p0},
{ST_PLCI_RESUMEING, ST_PLCI_RESUME, EV_PLCI_RESUME_CONF_OK, NULL},
/* P-RES */
{ST_PLCI_RESUME, ST_PLCI_ACTIVE, EV_PLCI_RESUME_IND, NULL},
/* P-HELD */
{ST_PLCI_HELD, ST_PLCI_ACTIVE, EV_PLCI_RETRIEVE_IND, NULL},
{},
};
static void plci_change_state(capidrv_contr * card, capidrv_plci * plci, int event)
{
struct plcistatechange *p = plcitable;
while (p->event) {
if (plci->state == p->actstate && p->event == event) {
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: plci_change_state:0x%x %d -> %d\n",
card->contrnr, plci->plci, plci->state, p->nextstate);
plci->state = p->nextstate;
if (p->changefunc)
p->changefunc(card, plci);
return;
}
p++;
}
printk(KERN_ERR "capidrv-%d: plci_change_state:0x%x state=%d event=%d ????\n",
card->contrnr, plci->plci, plci->state, event);
}
/* ------------------------------------------------------------------ */
static _cmsg cmsg;
static void n0(capidrv_contr * card, capidrv_ncci * ncci)
{
isdn_ctrl cmd;
capi_fill_DISCONNECT_REQ(&cmsg,
global.ap.applid,
card->msgid++,
ncci->plcip->plci,
NULL, /* BChannelinformation */
NULL, /* Keypadfacility */
NULL, /* Useruserdata */ /* $$$$ */
NULL /* Facilitydataarray */
);
send_message(card, &cmsg);
plci_change_state(card, ncci->plcip, EV_PLCI_DISCONNECT_REQ);
cmd.command = ISDN_STAT_BHUP;
cmd.driver = card->myid;
cmd.arg = ncci->chan;
card->interface.statcallb(&cmd);
free_ncci(card, ncci);
}
/* ------------------------------------------------------------------ */
struct nccistatechange {
int actstate;
int nextstate;
int event;
void (*changefunc) (capidrv_contr * card, capidrv_ncci * ncci);
};
static struct nccistatechange nccitable[] =
{
/* N-0 */
{ST_NCCI_NONE, ST_NCCI_OUTGOING, EV_NCCI_CONNECT_B3_REQ, NULL},
{ST_NCCI_NONE, ST_NCCI_INCOMING, EV_NCCI_CONNECT_B3_IND, NULL},
/* N-0.1 */
{ST_NCCI_OUTGOING, ST_NCCI_ALLOCATED, EV_NCCI_CONNECT_B3_CONF_OK, NULL},
{ST_NCCI_OUTGOING, ST_NCCI_NONE, EV_NCCI_CONNECT_B3_CONF_ERROR, n0},
/* N-1 */
{ST_NCCI_INCOMING, ST_NCCI_DISCONNECTING, EV_NCCI_CONNECT_B3_REJECT, NULL},
{ST_NCCI_INCOMING, ST_NCCI_ALLOCATED, EV_NCCI_CONNECT_B3_RESP, NULL},
{ST_NCCI_INCOMING, ST_NCCI_DISCONNECTED, EV_NCCI_DISCONNECT_B3_IND, NULL},
{ST_NCCI_INCOMING, ST_NCCI_DISCONNECTING, EV_NCCI_DISCONNECT_B3_REQ, NULL},
/* N-2 */
{ST_NCCI_ALLOCATED, ST_NCCI_ACTIVE, EV_NCCI_CONNECT_B3_ACTIVE_IND, NULL},
{ST_NCCI_ALLOCATED, ST_NCCI_DISCONNECTED, EV_NCCI_DISCONNECT_B3_IND, NULL},
{ST_NCCI_ALLOCATED, ST_NCCI_DISCONNECTING, EV_NCCI_DISCONNECT_B3_REQ, NULL},
/* N-ACT */
{ST_NCCI_ACTIVE, ST_NCCI_ACTIVE, EV_NCCI_RESET_B3_IND, NULL},
{ST_NCCI_ACTIVE, ST_NCCI_RESETING, EV_NCCI_RESET_B3_REQ, NULL},
{ST_NCCI_ACTIVE, ST_NCCI_DISCONNECTED, EV_NCCI_DISCONNECT_B3_IND, NULL},
{ST_NCCI_ACTIVE, ST_NCCI_DISCONNECTING, EV_NCCI_DISCONNECT_B3_REQ, NULL},
/* N-3 */
{ST_NCCI_RESETING, ST_NCCI_ACTIVE, EV_NCCI_RESET_B3_IND, NULL},
{ST_NCCI_RESETING, ST_NCCI_DISCONNECTED, EV_NCCI_DISCONNECT_B3_IND, NULL},
{ST_NCCI_RESETING, ST_NCCI_DISCONNECTING, EV_NCCI_DISCONNECT_B3_REQ, NULL},
/* N-4 */
{ST_NCCI_DISCONNECTING, ST_NCCI_DISCONNECTED, EV_NCCI_DISCONNECT_B3_IND, NULL},
{ST_NCCI_DISCONNECTING, ST_NCCI_PREVIOUS, EV_NCCI_DISCONNECT_B3_CONF_ERROR,NULL},
/* N-5 */
{ST_NCCI_DISCONNECTED, ST_NCCI_NONE, EV_NCCI_DISCONNECT_B3_RESP, n0},
{},
};
static void ncci_change_state(capidrv_contr * card, capidrv_ncci * ncci, int event)
{
struct nccistatechange *p = nccitable;
while (p->event) {
if (ncci->state == p->actstate && p->event == event) {
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: ncci_change_state:0x%x %d -> %d\n",
card->contrnr, ncci->ncci, ncci->state, p->nextstate);
if (p->nextstate == ST_NCCI_PREVIOUS) {
ncci->state = ncci->oldstate;
ncci->oldstate = p->actstate;
} else {
ncci->oldstate = p->actstate;
ncci->state = p->nextstate;
}
if (p->changefunc)
p->changefunc(card, ncci);
return;
}
p++;
}
printk(KERN_ERR "capidrv-%d: ncci_change_state:0x%x state=%d event=%d ????\n",
card->contrnr, ncci->ncci, ncci->state, event);
}
/* ------------------------------------------------------------------- */
static inline int new_bchan(capidrv_contr * card)
{
int i;
for (i = 0; i < card->nbchan; i++) {
if (card->bchans[i].plcip == 0) {
card->bchans[i].disconnecting = 0;
return i;
}
}
return -1;
}
/* ------------------------------------------------------------------- */
static void handle_controller(_cmsg * cmsg)
{
capidrv_contr *card = findcontrbynumber(cmsg->adr.adrController & 0x7f);
if (!card) {
printk(KERN_ERR "capidrv: %s from unknown controller 0x%x\n",
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrController & 0x7f);
return;
}
switch (CAPICMD(cmsg->Command, cmsg->Subcommand)) {
case CAPI_LISTEN_CONF: /* Controller */
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: listenconf Info=0x%4x (%s) cipmask=0x%x\n",
card->contrnr, cmsg->Info, capi_info2str(cmsg->Info), card->cipmask);
if (cmsg->Info) {
listen_change_state(card, EV_LISTEN_CONF_ERROR);
} else if (card->cipmask == 0) {
listen_change_state(card, EV_LISTEN_CONF_EMPTY);
} else {
listen_change_state(card, EV_LISTEN_CONF_OK);
}
break;
case CAPI_MANUFACTURER_IND: /* Controller */
if ( cmsg->ManuID == 0x214D5641
&& cmsg->Class == 0
&& cmsg->Function == 1) {
u8 *data = cmsg->ManuData+3;
u16 len = cmsg->ManuData[0];
u16 layer;
int direction;
if (len == 255) {
len = (cmsg->ManuData[1] | (cmsg->ManuData[2] << 8));
data += 2;
}
len -= 2;
layer = ((*(data-1)) << 8) | *(data-2);
if (layer & 0x300)
direction = (layer & 0x200) ? 0 : 1;
else direction = (layer & 0x800) ? 0 : 1;
if (layer & 0x0C00) {
if ((layer & 0xff) == 0x80) {
handle_dtrace_data(card, direction, 1, data, len);
break;
}
} else if ((layer & 0xff) < 0x80) {
handle_dtrace_data(card, direction, 0, data, len);
break;
}
printk(KERN_INFO "capidrv-%d: %s from controller 0x%x layer 0x%x, ignored\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrController, layer);
break;
}
goto ignored;
case CAPI_MANUFACTURER_CONF: /* Controller */
if (cmsg->ManuID == 0x214D5641) {
char *s = NULL;
switch (cmsg->Class) {
case 0: break;
case 1: s = "unknown class"; break;
case 2: s = "unknown function"; break;
default: s = "unkown error"; break;
}
if (s)
printk(KERN_INFO "capidrv-%d: %s from controller 0x%x function %d: %s\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrController,
cmsg->Function, s);
break;
}
goto ignored;
case CAPI_FACILITY_IND: /* Controller/plci/ncci */
goto ignored;
case CAPI_FACILITY_CONF: /* Controller/plci/ncci */
goto ignored;
case CAPI_INFO_IND: /* Controller/plci */
goto ignored;
case CAPI_INFO_CONF: /* Controller/plci */
goto ignored;
default:
printk(KERN_ERR "capidrv-%d: got %s from controller 0x%x ???",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrController);
}
return;
ignored:
printk(KERN_INFO "capidrv-%d: %s from controller 0x%x ignored\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrController);
}
static void handle_incoming_call(capidrv_contr * card, _cmsg * cmsg)
{
capidrv_plci *plcip;
capidrv_bchan *bchan;
isdn_ctrl cmd;
int chan;
if ((chan = new_bchan(card)) == -1) {
printk(KERN_ERR "capidrv-%d: incoming call on not existing bchan ?\n", card->contrnr);
return;
}
bchan = &card->bchans[chan];
if ((plcip = new_plci(card, chan)) == 0) {
printk(KERN_ERR "capidrv-%d: incoming call: no memory, sorry.\n", card->contrnr);
return;
}
bchan->incoming = 1;
plcip->plci = cmsg->adr.adrPLCI;
plci_change_state(card, plcip, EV_PLCI_CONNECT_IND);
cmd.command = ISDN_STAT_ICALL;
cmd.driver = card->myid;
cmd.arg = chan;
memset(&cmd.parm.setup, 0, sizeof(cmd.parm.setup));
strncpy(cmd.parm.setup.phone,
cmsg->CallingPartyNumber + 3,
cmsg->CallingPartyNumber[0] - 2);
strncpy(cmd.parm.setup.eazmsn,
cmsg->CalledPartyNumber + 2,
cmsg->CalledPartyNumber[0] - 1);
cmd.parm.setup.si1 = cip2si1(cmsg->CIPValue);
cmd.parm.setup.si2 = cip2si2(cmsg->CIPValue);
cmd.parm.setup.plan = cmsg->CallingPartyNumber[1];
cmd.parm.setup.screen = cmsg->CallingPartyNumber[2];
printk(KERN_INFO "capidrv-%d: incoming call %s,%d,%d,%s\n",
card->contrnr,
cmd.parm.setup.phone,
cmd.parm.setup.si1,
cmd.parm.setup.si2,
cmd.parm.setup.eazmsn);
if (cmd.parm.setup.si1 == 1 && cmd.parm.setup.si2 != 0) {
printk(KERN_INFO "capidrv-%d: patching si2=%d to 0 for VBOX\n",
card->contrnr,
cmd.parm.setup.si2);
cmd.parm.setup.si2 = 0;
}
switch (card->interface.statcallb(&cmd)) {
case 0:
case 3:
/* No device matching this call.
* and isdn_common.c has send a HANGUP command
* which is ignored in state ST_PLCI_INCOMING,
* so we send RESP to ignore the call
*/
capi_cmsg_answer(cmsg);
cmsg->Reject = 1; /* ignore */
send_message(card, cmsg);
plci_change_state(card, plcip, EV_PLCI_CONNECT_REJECT);
printk(KERN_INFO "capidrv-%d: incoming call %s,%d,%d,%s ignored\n",
card->contrnr,
cmd.parm.setup.phone,
cmd.parm.setup.si1,
cmd.parm.setup.si2,
cmd.parm.setup.eazmsn);
break;
case 1:
/* At least one device matching this call (RING on ttyI)
* HL-driver may send ALERTING on the D-channel in this
* case.
* really means: RING on ttyI or a net interface
* accepted this call already.
*
* If the call was accepted, state has already changed,
* and CONNECT_RESP already sent.
*/
if (plcip->state == ST_PLCI_INCOMING) {
printk(KERN_INFO "capidrv-%d: incoming call %s,%d,%d,%s tty alerting\n",
card->contrnr,
cmd.parm.setup.phone,
cmd.parm.setup.si1,
cmd.parm.setup.si2,
cmd.parm.setup.eazmsn);
capi_fill_ALERT_REQ(cmsg,
global.ap.applid,
card->msgid++,
plcip->plci, /* adr */
NULL,/* BChannelinformation */
NULL,/* Keypadfacility */
NULL,/* Useruserdata */
NULL /* Facilitydataarray */
);
plcip->msgid = cmsg->Messagenumber;
send_message(card, cmsg);
} else {
printk(KERN_INFO "capidrv-%d: incoming call %s,%d,%d,%s on netdev\n",
card->contrnr,
cmd.parm.setup.phone,
cmd.parm.setup.si1,
cmd.parm.setup.si2,
cmd.parm.setup.eazmsn);
}
break;
case 2: /* Call will be rejected. */
capi_cmsg_answer(cmsg);
cmsg->Reject = 2; /* reject call, normal call clearing */
send_message(card, cmsg);
plci_change_state(card, plcip, EV_PLCI_CONNECT_REJECT);
break;
default:
/* An error happened. (Invalid parameters for example.) */
capi_cmsg_answer(cmsg);
cmsg->Reject = 8; /* reject call,
destination out of order */
send_message(card, cmsg);
plci_change_state(card, plcip, EV_PLCI_CONNECT_REJECT);
break;
}
return;
}
static void handle_plci(_cmsg * cmsg)
{
capidrv_contr *card = findcontrbynumber(cmsg->adr.adrController & 0x7f);
capidrv_plci *plcip;
isdn_ctrl cmd;
_cdebbuf *cdb;
if (!card) {
printk(KERN_ERR "capidrv: %s from unknown controller 0x%x\n",
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrController & 0x7f);
return;
}
switch (CAPICMD(cmsg->Command, cmsg->Subcommand)) {
case CAPI_DISCONNECT_IND: /* plci */
if (cmsg->Reason) {
printk(KERN_INFO "capidrv-%d: %s reason 0x%x (%s) for plci 0x%x\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->Reason, capi_info2str(cmsg->Reason), cmsg->adr.adrPLCI);
}
if (!(plcip = find_plci_by_plci(card, cmsg->adr.adrPLCI))) {
capi_cmsg_answer(cmsg);
send_message(card, cmsg);
goto notfound;
}
card->bchans[plcip->chan].disconnecting = 1;
plci_change_state(card, plcip, EV_PLCI_DISCONNECT_IND);
capi_cmsg_answer(cmsg);
send_message(card, cmsg);
plci_change_state(card, plcip, EV_PLCI_DISCONNECT_RESP);
break;
case CAPI_DISCONNECT_CONF: /* plci */
if (cmsg->Info) {
printk(KERN_INFO "capidrv-%d: %s info 0x%x (%s) for plci 0x%x\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->Info, capi_info2str(cmsg->Info),
cmsg->adr.adrPLCI);
}
if (!(plcip = find_plci_by_plci(card, cmsg->adr.adrPLCI)))
goto notfound;
card->bchans[plcip->chan].disconnecting = 1;
break;
case CAPI_ALERT_CONF: /* plci */
if (cmsg->Info) {
printk(KERN_INFO "capidrv-%d: %s info 0x%x (%s) for plci 0x%x\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->Info, capi_info2str(cmsg->Info),
cmsg->adr.adrPLCI);
}
break;
case CAPI_CONNECT_IND: /* plci */
handle_incoming_call(card, cmsg);
break;
case CAPI_CONNECT_CONF: /* plci */
if (cmsg->Info) {
printk(KERN_INFO "capidrv-%d: %s info 0x%x (%s) for plci 0x%x\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->Info, capi_info2str(cmsg->Info),
cmsg->adr.adrPLCI);
}
if (!(plcip = find_plci_by_msgid(card, cmsg->Messagenumber)))
goto notfound;
plcip->plci = cmsg->adr.adrPLCI;
if (cmsg->Info) {
plci_change_state(card, plcip, EV_PLCI_CONNECT_CONF_ERROR);
} else {
plci_change_state(card, plcip, EV_PLCI_CONNECT_CONF_OK);
}
break;
case CAPI_CONNECT_ACTIVE_IND: /* plci */
if (!(plcip = find_plci_by_plci(card, cmsg->adr.adrPLCI)))
goto notfound;
if (card->bchans[plcip->chan].incoming) {
capi_cmsg_answer(cmsg);
send_message(card, cmsg);
plci_change_state(card, plcip, EV_PLCI_CONNECT_ACTIVE_IND);
} else {
capidrv_ncci *nccip;
capi_cmsg_answer(cmsg);
send_message(card, cmsg);
nccip = new_ncci(card, plcip, cmsg->adr.adrPLCI);
if (!nccip) {
printk(KERN_ERR "capidrv-%d: no mem for ncci, sorry\n", card->contrnr);
break; /* $$$$ */
}
capi_fill_CONNECT_B3_REQ(cmsg,
global.ap.applid,
card->msgid++,
plcip->plci, /* adr */
NULL /* NCPI */
);
nccip->msgid = cmsg->Messagenumber;
send_message(card, cmsg);
cmd.command = ISDN_STAT_DCONN;
cmd.driver = card->myid;
cmd.arg = plcip->chan;
card->interface.statcallb(&cmd);
plci_change_state(card, plcip, EV_PLCI_CONNECT_ACTIVE_IND);
ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_REQ);
}
break;
case CAPI_INFO_IND: /* Controller/plci */
if (!(plcip = find_plci_by_plci(card, cmsg->adr.adrPLCI)))
goto notfound;
if (cmsg->InfoNumber == 0x4000) {
if (cmsg->InfoElement[0] == 4) {
cmd.command = ISDN_STAT_CINF;
cmd.driver = card->myid;
cmd.arg = plcip->chan;
sprintf(cmd.parm.num, "%lu",
(unsigned long)
((u32) cmsg->InfoElement[1]
| ((u32) (cmsg->InfoElement[2]) << 8)
| ((u32) (cmsg->InfoElement[3]) << 16)
| ((u32) (cmsg->InfoElement[4]) << 24)));
card->interface.statcallb(&cmd);
break;
}
}
cdb = capi_cmsg2str(cmsg);
if (cdb) {
printk(KERN_WARNING "capidrv-%d: %s\n",
card->contrnr, cdb->buf);
cdebbuf_free(cdb);
} else
printk(KERN_WARNING "capidrv-%d: CAPI_INFO_IND InfoNumber %x not handled\n",
card->contrnr, cmsg->InfoNumber);
break;
case CAPI_CONNECT_ACTIVE_CONF: /* plci */
goto ignored;
case CAPI_SELECT_B_PROTOCOL_CONF: /* plci */
goto ignored;
case CAPI_FACILITY_IND: /* Controller/plci/ncci */
goto ignored;
case CAPI_FACILITY_CONF: /* Controller/plci/ncci */
goto ignored;
case CAPI_INFO_CONF: /* Controller/plci */
goto ignored;
default:
printk(KERN_ERR "capidrv-%d: got %s for plci 0x%x ???",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrPLCI);
}
return;
ignored:
printk(KERN_INFO "capidrv-%d: %s for plci 0x%x ignored\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrPLCI);
return;
notfound:
printk(KERN_ERR "capidrv-%d: %s: plci 0x%x not found\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrPLCI);
return;
}
static void handle_ncci(_cmsg * cmsg)
{
capidrv_contr *card = findcontrbynumber(cmsg->adr.adrController & 0x7f);
capidrv_plci *plcip;
capidrv_ncci *nccip;
isdn_ctrl cmd;
int len;
if (!card) {
printk(KERN_ERR "capidrv: %s from unknown controller 0x%x\n",
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrController & 0x7f);
return;
}
switch (CAPICMD(cmsg->Command, cmsg->Subcommand)) {
case CAPI_CONNECT_B3_ACTIVE_IND: /* ncci */
if (!(nccip = find_ncci(card, cmsg->adr.adrNCCI)))
goto notfound;
capi_cmsg_answer(cmsg);
send_message(card, cmsg);
ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_ACTIVE_IND);
cmd.command = ISDN_STAT_BCONN;
cmd.driver = card->myid;
cmd.arg = nccip->chan;
card->interface.statcallb(&cmd);
printk(KERN_INFO "capidrv-%d: chan %d up with ncci 0x%x\n",
card->contrnr, nccip->chan, nccip->ncci);
break;
case CAPI_CONNECT_B3_ACTIVE_CONF: /* ncci */
goto ignored;
case CAPI_CONNECT_B3_IND: /* ncci */
plcip = find_plci_by_ncci(card, cmsg->adr.adrNCCI);
if (plcip) {
nccip = new_ncci(card, plcip, cmsg->adr.adrNCCI);
if (nccip) {
ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_IND);
capi_fill_CONNECT_B3_RESP(cmsg,
global.ap.applid,
card->msgid++,
nccip->ncci, /* adr */
0, /* Reject */
NULL /* NCPI */
);
send_message(card, cmsg);
ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_RESP);
break;
}
printk(KERN_ERR "capidrv-%d: no mem for ncci, sorry\n", card->contrnr);
} else {
printk(KERN_ERR "capidrv-%d: %s: plci for ncci 0x%x not found\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrNCCI);
}
capi_fill_CONNECT_B3_RESP(cmsg,
global.ap.applid,
card->msgid++,
cmsg->adr.adrNCCI,
2, /* Reject */
NULL /* NCPI */
);
send_message(card, cmsg);
break;
case CAPI_CONNECT_B3_CONF: /* ncci */
if (!(nccip = find_ncci_by_msgid(card,
cmsg->adr.adrNCCI,
cmsg->Messagenumber)))
goto notfound;
nccip->ncci = cmsg->adr.adrNCCI;
if (cmsg->Info) {
printk(KERN_INFO "capidrv-%d: %s info 0x%x (%s) for ncci 0x%x\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->Info, capi_info2str(cmsg->Info),
cmsg->adr.adrNCCI);
}
if (cmsg->Info)
ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_CONF_ERROR);
else
ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_CONF_OK);
break;
case CAPI_CONNECT_B3_T90_ACTIVE_IND: /* ncci */
capi_cmsg_answer(cmsg);
send_message(card, cmsg);
break;
case CAPI_DATA_B3_IND: /* ncci */
/* handled in handle_data() */
goto ignored;
case CAPI_DATA_B3_CONF: /* ncci */
if (cmsg->Info) {
printk(KERN_WARNING "CAPI_DATA_B3_CONF: Info %x - %s\n",
cmsg->Info, capi_info2str(cmsg->Info));
}
if (!(nccip = find_ncci(card, cmsg->adr.adrNCCI)))
goto notfound;
len = capidrv_del_ack(nccip, cmsg->DataHandle);
if (len < 0)
break;
cmd.command = ISDN_STAT_BSENT;
cmd.driver = card->myid;
cmd.arg = nccip->chan;
cmd.parm.length = len;
card->interface.statcallb(&cmd);
break;
case CAPI_DISCONNECT_B3_IND: /* ncci */
if (!(nccip = find_ncci(card, cmsg->adr.adrNCCI)))
goto notfound;
card->bchans[nccip->chan].disconnecting = 1;
ncci_change_state(card, nccip, EV_NCCI_DISCONNECT_B3_IND);
capi_cmsg_answer(cmsg);
send_message(card, cmsg);
ncci_change_state(card, nccip, EV_NCCI_DISCONNECT_B3_RESP);
break;
case CAPI_DISCONNECT_B3_CONF: /* ncci */
if (!(nccip = find_ncci(card, cmsg->adr.adrNCCI)))
goto notfound;
if (cmsg->Info) {
printk(KERN_INFO "capidrv-%d: %s info 0x%x (%s) for ncci 0x%x\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->Info, capi_info2str(cmsg->Info),
cmsg->adr.adrNCCI);
ncci_change_state(card, nccip, EV_NCCI_DISCONNECT_B3_CONF_ERROR);
}
break;
case CAPI_RESET_B3_IND: /* ncci */
if (!(nccip = find_ncci(card, cmsg->adr.adrNCCI)))
goto notfound;
ncci_change_state(card, nccip, EV_NCCI_RESET_B3_IND);
capi_cmsg_answer(cmsg);
send_message(card, cmsg);
break;
case CAPI_RESET_B3_CONF: /* ncci */
goto ignored; /* $$$$ */
case CAPI_FACILITY_IND: /* Controller/plci/ncci */
goto ignored;
case CAPI_FACILITY_CONF: /* Controller/plci/ncci */
goto ignored;
default:
printk(KERN_ERR "capidrv-%d: got %s for ncci 0x%x ???",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrNCCI);
}
return;
ignored:
printk(KERN_INFO "capidrv-%d: %s for ncci 0x%x ignored\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrNCCI);
return;
notfound:
printk(KERN_ERR "capidrv-%d: %s: ncci 0x%x not found\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrNCCI);
}
static void handle_data(_cmsg * cmsg, struct sk_buff *skb)
{
capidrv_contr *card = findcontrbynumber(cmsg->adr.adrController & 0x7f);
capidrv_ncci *nccip;
if (!card) {
printk(KERN_ERR "capidrv: %s from unknown controller 0x%x\n",
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrController & 0x7f);
kfree_skb(skb);
return;
}
if (!(nccip = find_ncci(card, cmsg->adr.adrNCCI))) {
printk(KERN_ERR "capidrv-%d: %s: ncci 0x%x not found\n",
card->contrnr,
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
cmsg->adr.adrNCCI);
kfree_skb(skb);
return;
}
(void) skb_pull(skb, CAPIMSG_LEN(skb->data));
card->interface.rcvcallb_skb(card->myid, nccip->chan, skb);
capi_cmsg_answer(cmsg);
send_message(card, cmsg);
}
static _cmsg s_cmsg;
static void capidrv_recv_message(struct capi20_appl *ap, struct sk_buff *skb)
{
capi_message2cmsg(&s_cmsg, skb->data);
if (debugmode > 3) {
_cdebbuf *cdb = capi_cmsg2str(&s_cmsg);
if (cdb) {
printk(KERN_DEBUG "%s: applid=%d %s\n", __FUNCTION__,
ap->applid, cdb->buf);
cdebbuf_free(cdb);
} else
printk(KERN_DEBUG "%s: applid=%d %s not traced\n",
__FUNCTION__, ap->applid,
capi_cmd2str(s_cmsg.Command, s_cmsg.Subcommand));
}
if (s_cmsg.Command == CAPI_DATA_B3
&& s_cmsg.Subcommand == CAPI_IND) {
handle_data(&s_cmsg, skb);
return;
}
if ((s_cmsg.adr.adrController & 0xffffff00) == 0)
handle_controller(&s_cmsg);
else if ((s_cmsg.adr.adrPLCI & 0xffff0000) == 0)
handle_plci(&s_cmsg);
else
handle_ncci(&s_cmsg);
/*
* data of skb used in s_cmsg,
* free data when s_cmsg is not used again
* thanks to Lars Heete <hel@admin.de>
*/
kfree_skb(skb);
}
/* ------------------------------------------------------------------- */
#define PUTBYTE_TO_STATUS(card, byte) \
do { \
*(card)->q931_write++ = (byte); \
if ((card)->q931_write > (card)->q931_end) \
(card)->q931_write = (card)->q931_buf; \
} while (0)
static void handle_dtrace_data(capidrv_contr *card,
int send, int level2, u8 *data, u16 len)
{
u8 *p, *end;
isdn_ctrl cmd;
if (!len) {
printk(KERN_DEBUG "capidrv-%d: avmb1_q931_data: len == %d\n",
card->contrnr, len);
return;
}
if (level2) {
PUTBYTE_TO_STATUS(card, 'D');
PUTBYTE_TO_STATUS(card, '2');
PUTBYTE_TO_STATUS(card, send ? '>' : '<');
PUTBYTE_TO_STATUS(card, ':');
} else {
PUTBYTE_TO_STATUS(card, 'D');
PUTBYTE_TO_STATUS(card, '3');
PUTBYTE_TO_STATUS(card, send ? '>' : '<');
PUTBYTE_TO_STATUS(card, ':');
}
for (p = data, end = data+len; p < end; p++) {
u8 w;
PUTBYTE_TO_STATUS(card, ' ');
w = (*p >> 4) & 0xf;
PUTBYTE_TO_STATUS(card, (w < 10) ? '0'+w : 'A'-10+w);
w = *p & 0xf;
PUTBYTE_TO_STATUS(card, (w < 10) ? '0'+w : 'A'-10+w);
}
PUTBYTE_TO_STATUS(card, '\n');
cmd.command = ISDN_STAT_STAVAIL;
cmd.driver = card->myid;
cmd.arg = len*3+5;
card->interface.statcallb(&cmd);
}
/* ------------------------------------------------------------------- */
static _cmsg cmdcmsg;
static int capidrv_ioctl(isdn_ctrl * c, capidrv_contr * card)
{
switch (c->arg) {
case 1:
debugmode = (int)(*((unsigned int *)c->parm.num));
printk(KERN_DEBUG "capidrv-%d: debugmode=%d\n",
card->contrnr, debugmode);
return 0;
default:
printk(KERN_DEBUG "capidrv-%d: capidrv_ioctl(%ld) called ??\n",
card->contrnr, c->arg);
return -EINVAL;
}
return -EINVAL;
}
/*
* Handle leased lines (CAPI-Bundling)
*/
struct internal_bchannelinfo {
unsigned short channelalloc;
unsigned short operation;
unsigned char cmask[31];
};
static int decodeFVteln(char *teln, unsigned long *bmaskp, int *activep)
{
unsigned long bmask = 0;
int active = !0;
char *s;
int i;
if (strncmp(teln, "FV:", 3) != 0)
return 1;
s = teln + 3;
while (*s && *s == ' ') s++;
if (!*s) return -2;
if (*s == 'p' || *s == 'P') {
active = 0;
s++;
}
if (*s == 'a' || *s == 'A') {
active = !0;
s++;
}
while (*s) {
int digit1 = 0;
int digit2 = 0;
if (!isdigit(*s)) return -3;
while (isdigit(*s)) { digit1 = digit1*10 + (*s - '0'); s++; }
if (digit1 <= 0 && digit1 > 30) return -4;
if (*s == 0 || *s == ',' || *s == ' ') {
bmask |= (1 << digit1);
digit1 = 0;
if (*s) s++;
continue;
}
if (*s != '-') return -5;
s++;
if (!isdigit(*s)) return -3;
while (isdigit(*s)) { digit2 = digit2*10 + (*s - '0'); s++; }
if (digit2 <= 0 && digit2 > 30) return -4;
if (*s == 0 || *s == ',' || *s == ' ') {
if (digit1 > digit2)
for (i = digit2; i <= digit1 ; i++)
bmask |= (1 << i);
else
for (i = digit1; i <= digit2 ; i++)
bmask |= (1 << i);
digit1 = digit2 = 0;
if (*s) s++;
continue;
}
return -6;
}
if (activep) *activep = active;
if (bmaskp) *bmaskp = bmask;
return 0;
}
static int FVteln2capi20(char *teln, u8 AdditionalInfo[1+2+2+31])
{
unsigned long bmask;
int active;
int rc, i;
rc = decodeFVteln(teln, &bmask, &active);
if (rc) return rc;
/* Length */
AdditionalInfo[0] = 2+2+31;
/* Channel: 3 => use channel allocation */
AdditionalInfo[1] = 3; AdditionalInfo[2] = 0;
/* Operation: 0 => DTE mode, 1 => DCE mode */
if (active) {
AdditionalInfo[3] = 0; AdditionalInfo[4] = 0;
} else {
AdditionalInfo[3] = 1; AdditionalInfo[4] = 0;
}
/* Channel mask array */
AdditionalInfo[5] = 0; /* no D-Channel */
for (i=1; i <= 30; i++)
AdditionalInfo[5+i] = (bmask & (1 << i)) ? 0xff : 0;
return 0;
}
static int capidrv_command(isdn_ctrl * c, capidrv_contr * card)
{
isdn_ctrl cmd;
struct capidrv_bchan *bchan;
struct capidrv_plci *plcip;
u8 AdditionalInfo[1+2+2+31];
int rc, isleasedline = 0;
if (c->command == ISDN_CMD_IOCTL)
return capidrv_ioctl(c, card);
switch (c->command) {
case ISDN_CMD_DIAL:{
u8 calling[ISDN_MSNLEN + 3];
u8 called[ISDN_MSNLEN + 2];
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: ISDN_CMD_DIAL(ch=%ld,\"%s,%d,%d,%s\")\n",
card->contrnr,
c->arg,
c->parm.setup.phone,
c->parm.setup.si1,
c->parm.setup.si2,
c->parm.setup.eazmsn);
bchan = &card->bchans[c->arg % card->nbchan];
if (bchan->plcip) {
printk(KERN_ERR "capidrv-%d: dail ch=%ld,\"%s,%d,%d,%s\" in use (plci=0x%x)\n",
card->contrnr,
c->arg,
c->parm.setup.phone,
c->parm.setup.si1,
c->parm.setup.si2,
c->parm.setup.eazmsn,
bchan->plcip->plci);
return 0;
}
bchan->si1 = c->parm.setup.si1;
bchan->si2 = c->parm.setup.si2;
strncpy(bchan->num, c->parm.setup.phone, sizeof(bchan->num));
strncpy(bchan->mynum, c->parm.setup.eazmsn, sizeof(bchan->mynum));
rc = FVteln2capi20(bchan->num, AdditionalInfo);
isleasedline = (rc == 0);
if (rc < 0)
printk(KERN_ERR "capidrv-%d: WARNING: invalid leased linedefinition \"%s\"\n", card->contrnr, bchan->num);
if (isleasedline) {
calling[0] = 0;
called[0] = 0;
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: connecting leased line\n", card->contrnr);
} else {
calling[0] = strlen(bchan->mynum) + 2;
calling[1] = 0;
calling[2] = 0x80;
strncpy(calling + 3, bchan->mynum, ISDN_MSNLEN);
called[0] = strlen(bchan->num) + 1;
called[1] = 0x80;
strncpy(called + 2, bchan->num, ISDN_MSNLEN);
}
capi_fill_CONNECT_REQ(&cmdcmsg,
global.ap.applid,
card->msgid++,
card->contrnr, /* adr */
si2cip(bchan->si1, bchan->si2), /* cipvalue */
called, /* CalledPartyNumber */
calling, /* CallingPartyNumber */
NULL, /* CalledPartySubaddress */
NULL, /* CallingPartySubaddress */
b1prot(bchan->l2, bchan->l3), /* B1protocol */
b2prot(bchan->l2, bchan->l3), /* B2protocol */
b3prot(bchan->l2, bchan->l3), /* B3protocol */
b1config(bchan->l2, bchan->l3), /* B1configuration */
NULL, /* B2configuration */
NULL, /* B3configuration */
NULL, /* BC */
NULL, /* LLC */
NULL, /* HLC */
/* BChannelinformation */
isleasedline ? AdditionalInfo : NULL,
NULL, /* Keypadfacility */
NULL, /* Useruserdata */
NULL /* Facilitydataarray */
);
if ((plcip = new_plci(card, (c->arg % card->nbchan))) == 0) {
cmd.command = ISDN_STAT_DHUP;
cmd.driver = card->myid;
cmd.arg = (c->arg % card->nbchan);
card->interface.statcallb(&cmd);
return -1;
}
plcip->msgid = cmdcmsg.Messagenumber;
plcip->leasedline = isleasedline;
plci_change_state(card, plcip, EV_PLCI_CONNECT_REQ);
send_message(card, &cmdcmsg);
return 0;
}
case ISDN_CMD_ACCEPTD:
bchan = &card->bchans[c->arg % card->nbchan];
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: ISDN_CMD_ACCEPTD(ch=%ld) l2=%d l3=%d\n",
card->contrnr,
c->arg, bchan->l2, bchan->l3);
capi_fill_CONNECT_RESP(&cmdcmsg,
global.ap.applid,
card->msgid++,
bchan->plcip->plci, /* adr */
0, /* Reject */
b1prot(bchan->l2, bchan->l3), /* B1protocol */
b2prot(bchan->l2, bchan->l3), /* B2protocol */
b3prot(bchan->l2, bchan->l3), /* B3protocol */
b1config(bchan->l2, bchan->l3), /* B1configuration */
NULL, /* B2configuration */
NULL, /* B3configuration */
NULL, /* ConnectedNumber */
NULL, /* ConnectedSubaddress */
NULL, /* LLC */
NULL, /* BChannelinformation */
NULL, /* Keypadfacility */
NULL, /* Useruserdata */
NULL /* Facilitydataarray */
);
capi_cmsg2message(&cmdcmsg, cmdcmsg.buf);
plci_change_state(card, bchan->plcip, EV_PLCI_CONNECT_RESP);
send_message(card, &cmdcmsg);
return 0;
case ISDN_CMD_ACCEPTB:
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: ISDN_CMD_ACCEPTB(ch=%ld)\n",
card->contrnr,
c->arg);
return -ENOSYS;
case ISDN_CMD_HANGUP:
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: ISDN_CMD_HANGUP(ch=%ld)\n",
card->contrnr,
c->arg);
bchan = &card->bchans[c->arg % card->nbchan];
if (bchan->disconnecting) {
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: chan %ld already disconnecting ...\n",
card->contrnr,
c->arg);
return 0;
}
if (bchan->nccip) {
bchan->disconnecting = 1;
capi_fill_DISCONNECT_B3_REQ(&cmdcmsg,
global.ap.applid,
card->msgid++,
bchan->nccip->ncci,
NULL /* NCPI */
);
ncci_change_state(card, bchan->nccip, EV_NCCI_DISCONNECT_B3_REQ);
send_message(card, &cmdcmsg);
return 0;
} else if (bchan->plcip) {
if (bchan->plcip->state == ST_PLCI_INCOMING) {
/*
* just ignore, we a called from
* isdn_status_callback(),
* which will return 0 or 2, this is handled
* by the CONNECT_IND handler
*/
bchan->disconnecting = 1;
return 0;
} else if (bchan->plcip->plci) {
bchan->disconnecting = 1;
capi_fill_DISCONNECT_REQ(&cmdcmsg,
global.ap.applid,
card->msgid++,
bchan->plcip->plci,
NULL, /* BChannelinformation */
NULL, /* Keypadfacility */
NULL, /* Useruserdata */
NULL /* Facilitydataarray */
);
plci_change_state(card, bchan->plcip, EV_PLCI_DISCONNECT_REQ);
send_message(card, &cmdcmsg);
return 0;
} else {
printk(KERN_ERR "capidrv-%d: chan %ld disconnect request while waiting for CONNECT_CONF\n",
card->contrnr,
c->arg);
return -EINVAL;
}
}
printk(KERN_ERR "capidrv-%d: chan %ld disconnect request on free channel\n",
card->contrnr,
c->arg);
return -EINVAL;
/* ready */
case ISDN_CMD_SETL2:
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: set L2 on chan %ld to %ld\n",
card->contrnr,
(c->arg & 0xff), (c->arg >> 8));
bchan = &card->bchans[(c->arg & 0xff) % card->nbchan];
bchan->l2 = (c->arg >> 8);
return 0;
case ISDN_CMD_SETL3:
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: set L3 on chan %ld to %ld\n",
card->contrnr,
(c->arg & 0xff), (c->arg >> 8));
bchan = &card->bchans[(c->arg & 0xff) % card->nbchan];
bchan->l3 = (c->arg >> 8);
return 0;
case ISDN_CMD_SETEAZ:
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: set EAZ \"%s\" on chan %ld\n",
card->contrnr,
c->parm.num, c->arg);
bchan = &card->bchans[c->arg % card->nbchan];
strncpy(bchan->msn, c->parm.num, ISDN_MSNLEN);
return 0;
case ISDN_CMD_CLREAZ:
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: clearing EAZ on chan %ld\n",
card->contrnr, c->arg);
bchan = &card->bchans[c->arg % card->nbchan];
bchan->msn[0] = 0;
return 0;
default:
printk(KERN_ERR "capidrv-%d: ISDN_CMD_%d, Huh?\n",
card->contrnr, c->command);
return -EINVAL;
}
return 0;
}
static int if_command(isdn_ctrl * c)
{
capidrv_contr *card = findcontrbydriverid(c->driver);
if (card)
return capidrv_command(c, card);
printk(KERN_ERR
"capidrv: if_command %d called with invalid driverId %d!\n",
c->command, c->driver);
return -ENODEV;
}
static _cmsg sendcmsg;
static int if_sendbuf(int id, int channel, int doack, struct sk_buff *skb)
{
capidrv_contr *card = findcontrbydriverid(id);
capidrv_bchan *bchan;
capidrv_ncci *nccip;
int len = skb->len;
int msglen;
u16 errcode;
u16 datahandle;
u32 data;
if (!card) {
printk(KERN_ERR "capidrv: if_sendbuf called with invalid driverId %d!\n",
id);
return 0;
}
if (debugmode > 4)
printk(KERN_DEBUG "capidrv-%d: sendbuf len=%d skb=%p doack=%d\n",
card->contrnr, len, skb, doack);
bchan = &card->bchans[channel % card->nbchan];
nccip = bchan->nccip;
if (!nccip || nccip->state != ST_NCCI_ACTIVE) {
printk(KERN_ERR "capidrv-%d: if_sendbuf: %s:%d: chan not up!\n",
card->contrnr, card->name, channel);
return 0;
}
datahandle = nccip->datahandle;
/*
* Here we copy pointer skb->data into the 32-bit 'Data' field.
* The 'Data' field is not used in practice in linux kernel
* (neither in 32 or 64 bit), but should have some value,
* since a CAPI message trace will display it.
*
* The correct value in the 32 bit case is the address of the
* data, in 64 bit it makes no sense, we use 0 there.
*/
#ifdef CONFIG_64BIT
data = 0;
#else
data = (unsigned long) skb->data;
#endif
capi_fill_DATA_B3_REQ(&sendcmsg, global.ap.applid, card->msgid++,
nccip->ncci, /* adr */
data, /* Data */
skb->len, /* DataLength */
datahandle, /* DataHandle */
0 /* Flags */
);
if (capidrv_add_ack(nccip, datahandle, doack ? (int)skb->len : -1) < 0)
return 0;
capi_cmsg2message(&sendcmsg, sendcmsg.buf);
msglen = CAPIMSG_LEN(sendcmsg.buf);
if (skb_headroom(skb) < msglen) {
struct sk_buff *nskb = skb_realloc_headroom(skb, msglen);
if (!nskb) {
printk(KERN_ERR "capidrv-%d: if_sendbuf: no memory\n",
card->contrnr);
(void)capidrv_del_ack(nccip, datahandle);
return 0;
}
printk(KERN_DEBUG "capidrv-%d: only %d bytes headroom, need %d\n",
card->contrnr, skb_headroom(skb), msglen);
memcpy(skb_push(nskb, msglen), sendcmsg.buf, msglen);
errcode = capi20_put_message(&global.ap, nskb);
if (errcode == CAPI_NOERROR) {
dev_kfree_skb(skb);
nccip->datahandle++;
return len;
}
if (debugmode > 3)
printk(KERN_DEBUG "capidrv-%d: sendbuf putmsg ret(%x) - %s\n",
card->contrnr, errcode, capi_info2str(errcode));
(void)capidrv_del_ack(nccip, datahandle);
dev_kfree_skb(nskb);
return errcode == CAPI_SENDQUEUEFULL ? 0 : -1;
} else {
memcpy(skb_push(skb, msglen), sendcmsg.buf, msglen);
errcode = capi20_put_message(&global.ap, skb);
if (errcode == CAPI_NOERROR) {
nccip->datahandle++;
return len;
}
if (debugmode > 3)
printk(KERN_DEBUG "capidrv-%d: sendbuf putmsg ret(%x) - %s\n",
card->contrnr, errcode, capi_info2str(errcode));
skb_pull(skb, msglen);
(void)capidrv_del_ack(nccip, datahandle);
return errcode == CAPI_SENDQUEUEFULL ? 0 : -1;
}
}
static int if_readstat(u8 __user *buf, int len, int id, int channel)
{
capidrv_contr *card = findcontrbydriverid(id);
int count;
u8 __user *p;
if (!card) {
printk(KERN_ERR "capidrv: if_readstat called with invalid driverId %d!\n",
id);
return -ENODEV;
}
for (p=buf, count=0; count < len; p++, count++) {
if (put_user(*card->q931_read++, p))
return -EFAULT;
if (card->q931_read > card->q931_end)
card->q931_read = card->q931_buf;
}
return count;
}
static void enable_dchannel_trace(capidrv_contr *card)
{
u8 manufacturer[CAPI_MANUFACTURER_LEN];
capi_version version;
u16 contr = card->contrnr;
u16 errcode;
u16 avmversion[3];
errcode = capi20_get_manufacturer(contr, manufacturer);
if (errcode != CAPI_NOERROR) {
printk(KERN_ERR "%s: can't get manufacturer (0x%x)\n",
card->name, errcode);
return;
}
if (strstr(manufacturer, "AVM") == 0) {
printk(KERN_ERR "%s: not from AVM, no d-channel trace possible (%s)\n",
card->name, manufacturer);
return;
}
errcode = capi20_get_version(contr, &version);
if (errcode != CAPI_NOERROR) {
printk(KERN_ERR "%s: can't get version (0x%x)\n",
card->name, errcode);
return;
}
avmversion[0] = (version.majormanuversion >> 4) & 0x0f;
avmversion[1] = (version.majormanuversion << 4) & 0xf0;
avmversion[1] |= (version.minormanuversion >> 4) & 0x0f;
avmversion[2] |= version.minormanuversion & 0x0f;
if (avmversion[0] > 3 || (avmversion[0] == 3 && avmversion[1] > 5)) {
printk(KERN_INFO "%s: D2 trace enabled\n", card->name);
capi_fill_MANUFACTURER_REQ(&cmdcmsg, global.ap.applid,
card->msgid++,
contr,
0x214D5641, /* ManuID */
0, /* Class */
1, /* Function */
(_cstruct)"\004\200\014\000\000");
} else {
printk(KERN_INFO "%s: D3 trace enabled\n", card->name);
capi_fill_MANUFACTURER_REQ(&cmdcmsg, global.ap.applid,
card->msgid++,
contr,
0x214D5641, /* ManuID */
0, /* Class */
1, /* Function */
(_cstruct)"\004\002\003\000\000");
}
send_message(card, &cmdcmsg);
}
static void send_listen(capidrv_contr *card)
{
capi_fill_LISTEN_REQ(&cmdcmsg, global.ap.applid,
card->msgid++,
card->contrnr, /* controller */
1 << 6, /* Infomask */
card->cipmask,
card->cipmask2,
NULL, NULL);
send_message(card, &cmdcmsg);
listen_change_state(card, EV_LISTEN_REQ);
}
static void listentimerfunc(unsigned long x)
{
capidrv_contr *card = (capidrv_contr *)x;
if (card->state != ST_LISTEN_NONE && card->state != ST_LISTEN_ACTIVE)
printk(KERN_ERR "%s: controller dead ??\n", card->name);
send_listen(card);
mod_timer(&card->listentimer, jiffies + 60*HZ);
}
static int capidrv_addcontr(u16 contr, struct capi_profile *profp)
{
capidrv_contr *card;
unsigned long flags;
isdn_ctrl cmd;
char id[20];
int i;
sprintf(id, "capidrv-%d", contr);
if (!try_module_get(THIS_MODULE)) {
printk(KERN_WARNING "capidrv: (%s) Could not reserve module\n", id);
return -1;
}
if (!(card = kzalloc(sizeof(capidrv_contr), GFP_ATOMIC))) {
printk(KERN_WARNING
"capidrv: (%s) Could not allocate contr-struct.\n", id);
return -1;
}
card->owner = THIS_MODULE;
init_timer(&card->listentimer);
strcpy(card->name, id);
card->contrnr = contr;
card->nbchan = profp->nbchannel;
card->bchans = kmalloc(sizeof(capidrv_bchan) * card->nbchan, GFP_ATOMIC);
if (!card->bchans) {
printk(KERN_WARNING
"capidrv: (%s) Could not allocate bchan-structs.\n", id);
module_put(card->owner);
kfree(card);
return -1;
}
card->interface.channels = profp->nbchannel;
card->interface.maxbufsize = 2048;
card->interface.command = if_command;
card->interface.writebuf_skb = if_sendbuf;
card->interface.writecmd = NULL;
card->interface.readstat = if_readstat;
card->interface.features = ISDN_FEATURE_L2_HDLC |
ISDN_FEATURE_L2_TRANS |
ISDN_FEATURE_L3_TRANS |
ISDN_FEATURE_P_UNKNOWN |
ISDN_FEATURE_L2_X75I |
ISDN_FEATURE_L2_X75UI |
ISDN_FEATURE_L2_X75BUI;
if (profp->support1 & (1<<2))
card->interface.features |= ISDN_FEATURE_L2_V11096 |
ISDN_FEATURE_L2_V11019 |
ISDN_FEATURE_L2_V11038;
if (profp->support1 & (1<<8))
card->interface.features |= ISDN_FEATURE_L2_MODEM;
card->interface.hl_hdrlen = 22; /* len of DATA_B3_REQ */
strncpy(card->interface.id, id, sizeof(card->interface.id) - 1);
card->q931_read = card->q931_buf;
card->q931_write = card->q931_buf;
card->q931_end = card->q931_buf + sizeof(card->q931_buf) - 1;
if (!register_isdn(&card->interface)) {
printk(KERN_ERR "capidrv: Unable to register contr %s\n", id);
kfree(card->bchans);
module_put(card->owner);
kfree(card);
return -1;
}
card->myid = card->interface.channels;
memset(card->bchans, 0, sizeof(capidrv_bchan) * card->nbchan);
for (i = 0; i < card->nbchan; i++) {
card->bchans[i].contr = card;
}
spin_lock_irqsave(&global_lock, flags);
card->next = global.contr_list;
global.contr_list = card;
global.ncontr++;
spin_unlock_irqrestore(&global_lock, flags);
cmd.command = ISDN_STAT_RUN;
cmd.driver = card->myid;
card->interface.statcallb(&cmd);
card->cipmask = 0x1FFF03FF; /* any */
card->cipmask2 = 0;
card->listentimer.data = (unsigned long)card;
card->listentimer.function = listentimerfunc;
send_listen(card);
mod_timer(&card->listentimer, jiffies + 60*HZ);
printk(KERN_INFO "%s: now up (%d B channels)\n",
card->name, card->nbchan);
enable_dchannel_trace(card);
return 0;
}
static int capidrv_delcontr(u16 contr)
{
capidrv_contr **pp, *card;
unsigned long flags;
isdn_ctrl cmd;
spin_lock_irqsave(&global_lock, flags);
for (card = global.contr_list; card; card = card->next) {
if (card->contrnr == contr)
break;
}
if (!card) {
spin_unlock_irqrestore(&global_lock, flags);
printk(KERN_ERR "capidrv: delcontr: no contr %u\n", contr);
return -1;
}
/* FIXME: maybe a race condition the card should be removed
* here from global list /kkeil
*/
spin_unlock_irqrestore(&global_lock, flags);
del_timer(&card->listentimer);
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: id=%d unloading\n",
card->contrnr, card->myid);
cmd.command = ISDN_STAT_STOP;
cmd.driver = card->myid;
card->interface.statcallb(&cmd);
while (card->nbchan) {
cmd.command = ISDN_STAT_DISCH;
cmd.driver = card->myid;
cmd.arg = card->nbchan-1;
cmd.parm.num[0] = 0;
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: id=%d disable chan=%ld\n",
card->contrnr, card->myid, cmd.arg);
card->interface.statcallb(&cmd);
if (card->bchans[card->nbchan-1].nccip)
free_ncci(card, card->bchans[card->nbchan-1].nccip);
if (card->bchans[card->nbchan-1].plcip)
free_plci(card, card->bchans[card->nbchan-1].plcip);
if (card->plci_list)
printk(KERN_ERR "capidrv: bug in free_plci()\n");
card->nbchan--;
}
kfree(card->bchans);
card->bchans = NULL;
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: id=%d isdn unload\n",
card->contrnr, card->myid);
cmd.command = ISDN_STAT_UNLOAD;
cmd.driver = card->myid;
card->interface.statcallb(&cmd);
if (debugmode)
printk(KERN_DEBUG "capidrv-%d: id=%d remove contr from list\n",
card->contrnr, card->myid);
spin_lock_irqsave(&global_lock, flags);
for (pp = &global.contr_list; *pp; pp = &(*pp)->next) {
if (*pp == card) {
*pp = (*pp)->next;
card->next = NULL;
global.ncontr--;
break;
}
}
spin_unlock_irqrestore(&global_lock, flags);
module_put(card->owner);
printk(KERN_INFO "%s: now down.\n", card->name);
kfree(card);
return 0;
}
static void lower_callback(unsigned int cmd, u32 contr, void *data)
{
switch (cmd) {
case KCI_CONTRUP:
printk(KERN_INFO "capidrv: controller %hu up\n", contr);
(void) capidrv_addcontr(contr, (capi_profile *) data);
break;
case KCI_CONTRDOWN:
printk(KERN_INFO "capidrv: controller %hu down\n", contr);
(void) capidrv_delcontr(contr);
break;
}
}
/*
* /proc/capi/capidrv:
* nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt
*/
static int proc_capidrv_read_proc(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
int len = 0;
len += sprintf(page+len, "%lu %lu %lu %lu\n",
global.ap.nrecvctlpkt,
global.ap.nrecvdatapkt,
global.ap.nsentctlpkt,
global.ap.nsentdatapkt);
if (off+count >= len)
*eof = 1;
if (len < off)
return 0;
*start = page + off;
return ((count < len-off) ? count : len-off);
}
static struct procfsentries {
char *name;
mode_t mode;
int (*read_proc)(char *page, char **start, off_t off,
int count, int *eof, void *data);
struct proc_dir_entry *procent;
} procfsentries[] = {
/* { "capi", S_IFDIR, 0 }, */
{ "capi/capidrv", 0 , proc_capidrv_read_proc },
};
static void __init proc_init(void)
{
int nelem = ARRAY_SIZE(procfsentries);
int i;
for (i=0; i < nelem; i++) {
struct procfsentries *p = procfsentries + i;
p->procent = create_proc_entry(p->name, p->mode, NULL);
if (p->procent) p->procent->read_proc = p->read_proc;
}
}
static void __exit proc_exit(void)
{
int nelem = ARRAY_SIZE(procfsentries);
int i;
for (i=nelem-1; i >= 0; i--) {
struct procfsentries *p = procfsentries + i;
if (p->procent) {
remove_proc_entry(p->name, NULL);
p->procent = NULL;
}
}
}
static int __init capidrv_init(void)
{
capi_profile profile;
char rev[32];
char *p;
u32 ncontr, contr;
u16 errcode;
if ((p = strchr(revision, ':')) != 0 && p[1]) {
strncpy(rev, p + 2, sizeof(rev));
rev[sizeof(rev)-1] = 0;
if ((p = strchr(rev, '$')) != 0 && p > rev)
*(p-1) = 0;
} else
strcpy(rev, "1.0");
global.ap.rparam.level3cnt = -2; /* number of bchannels twice */
global.ap.rparam.datablkcnt = 16;
global.ap.rparam.datablklen = 2048;
global.ap.recv_message = capidrv_recv_message;
errcode = capi20_register(&global.ap);
if (errcode) {
return -EIO;
}
capi20_set_callback(&global.ap, lower_callback);
errcode = capi20_get_profile(0, &profile);
if (errcode != CAPI_NOERROR) {
capi20_release(&global.ap);
return -EIO;
}
ncontr = profile.ncontroller;
for (contr = 1; contr <= ncontr; contr++) {
errcode = capi20_get_profile(contr, &profile);
if (errcode != CAPI_NOERROR)
continue;
(void) capidrv_addcontr(contr, &profile);
}
proc_init();
printk(KERN_NOTICE "capidrv: Rev %s: loaded\n", rev);
return 0;
}
static void __exit capidrv_exit(void)
{
char rev[32];
char *p;
if ((p = strchr(revision, ':')) != 0) {
strncpy(rev, p + 1, sizeof(rev));
rev[sizeof(rev)-1] = 0;
if ((p = strchr(rev, '$')) != 0)
*p = 0;
} else {
strcpy(rev, " ??? ");
}
capi20_release(&global.ap);
proc_exit();
printk(KERN_NOTICE "capidrv: Rev%s: unloaded\n", rev);
}
module_init(capidrv_init);
module_exit(capidrv_exit);
Reference in a new issue View git blame Copy permalink