mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-18 01:34:14 +08:00
886cca3a0f
This patch contains the following possible cleanups: - make some needlessly global functions static - remove the following unused global functions: - callbacks.c: cb_out_3 - capi.c: capi_decode_disc_conf Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
351 lines
7.7 KiB
C
351 lines
7.7 KiB
C
/*
|
|
* Callbacks for the FSM
|
|
*
|
|
* Copyright (C) 1996 Universidade de Lisboa
|
|
*
|
|
* Written by Pedro Roque Marques (roque@di.fc.ul.pt)
|
|
*
|
|
* This software may be used and distributed according to the terms of
|
|
* the GNU General Public License, incorporated herein by reference.
|
|
*/
|
|
|
|
/*
|
|
* Fix: 19981230 - Carlos Morgado <chbm@techie.com>
|
|
* Port of Nelson Escravana's <nelson.escravana@usa.net> fix to CalledPN
|
|
* NULL pointer dereference in cb_in_1 (originally fixed in 2.0)
|
|
*/
|
|
|
|
#include <linux/sched.h>
|
|
#include <linux/string.h>
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/skbuff.h>
|
|
|
|
#include <asm/io.h>
|
|
|
|
#include <linux/isdnif.h>
|
|
|
|
#include "pcbit.h"
|
|
#include "layer2.h"
|
|
#include "edss1.h"
|
|
#include "callbacks.h"
|
|
#include "capi.h"
|
|
|
|
ushort last_ref_num = 1;
|
|
|
|
/*
|
|
* send_conn_req
|
|
*
|
|
*/
|
|
|
|
void cb_out_1(struct pcbit_dev * dev, struct pcbit_chan* chan,
|
|
struct callb_data *cbdata)
|
|
{
|
|
struct sk_buff *skb;
|
|
int len;
|
|
ushort refnum;
|
|
|
|
|
|
#ifdef DEBUG
|
|
printk(KERN_DEBUG "Called Party Number: %s\n",
|
|
cbdata->data.setup.CalledPN);
|
|
#endif
|
|
/*
|
|
* hdr - kmalloc in capi_conn_req
|
|
* - kfree when msg has been sent
|
|
*/
|
|
|
|
if ((len = capi_conn_req(cbdata->data.setup.CalledPN, &skb,
|
|
chan->proto)) < 0)
|
|
{
|
|
printk("capi_conn_req failed\n");
|
|
return;
|
|
}
|
|
|
|
|
|
refnum = last_ref_num++ & 0x7fffU;
|
|
|
|
chan->callref = 0;
|
|
chan->layer2link = 0;
|
|
chan->snum = 0;
|
|
chan->s_refnum = refnum;
|
|
|
|
pcbit_l2_write(dev, MSG_CONN_REQ, refnum, skb, len);
|
|
}
|
|
|
|
/*
|
|
* rcv CONNECT
|
|
* will go into ACTIVE state
|
|
* send CONN_ACTIVE_RESP
|
|
* send Select protocol request
|
|
*/
|
|
|
|
void cb_out_2(struct pcbit_dev * dev, struct pcbit_chan* chan,
|
|
struct callb_data *data)
|
|
{
|
|
isdn_ctrl ictl;
|
|
struct sk_buff *skb;
|
|
int len;
|
|
ushort refnum;
|
|
|
|
if ((len=capi_conn_active_resp(chan, &skb)) < 0)
|
|
{
|
|
printk("capi_conn_active_req failed\n");
|
|
return;
|
|
}
|
|
|
|
refnum = last_ref_num++ & 0x7fffU;
|
|
chan->s_refnum = refnum;
|
|
|
|
pcbit_l2_write(dev, MSG_CONN_ACTV_RESP, refnum, skb, len);
|
|
|
|
|
|
ictl.command = ISDN_STAT_DCONN;
|
|
ictl.driver=dev->id;
|
|
ictl.arg=chan->id;
|
|
dev->dev_if->statcallb(&ictl);
|
|
|
|
/* ACTIVE D-channel */
|
|
|
|
/* Select protocol */
|
|
|
|
if ((len=capi_select_proto_req(chan, &skb, 1 /*outgoing*/)) < 0) {
|
|
printk("capi_select_proto_req failed\n");
|
|
return;
|
|
}
|
|
|
|
refnum = last_ref_num++ & 0x7fffU;
|
|
chan->s_refnum = refnum;
|
|
|
|
pcbit_l2_write(dev, MSG_SELP_REQ, refnum, skb, len);
|
|
}
|
|
|
|
|
|
/*
|
|
* Incoming call received
|
|
* inform user
|
|
*/
|
|
|
|
void cb_in_1(struct pcbit_dev * dev, struct pcbit_chan* chan,
|
|
struct callb_data *cbdata)
|
|
{
|
|
isdn_ctrl ictl;
|
|
unsigned short refnum;
|
|
struct sk_buff *skb;
|
|
int len;
|
|
|
|
|
|
ictl.command = ISDN_STAT_ICALL;
|
|
ictl.driver=dev->id;
|
|
ictl.arg=chan->id;
|
|
|
|
/*
|
|
* ictl.num >= strlen() + strlen() + 5
|
|
*/
|
|
|
|
if (cbdata->data.setup.CallingPN == NULL) {
|
|
printk(KERN_DEBUG "NULL CallingPN to phone; using 0\n");
|
|
strcpy(ictl.parm.setup.phone, "0");
|
|
}
|
|
else {
|
|
strcpy(ictl.parm.setup.phone, cbdata->data.setup.CallingPN);
|
|
}
|
|
if (cbdata->data.setup.CalledPN == NULL) {
|
|
printk(KERN_DEBUG "NULL CalledPN to eazmsn; using 0\n");
|
|
strcpy(ictl.parm.setup.eazmsn, "0");
|
|
}
|
|
else {
|
|
strcpy(ictl.parm.setup.eazmsn, cbdata->data.setup.CalledPN);
|
|
}
|
|
ictl.parm.setup.si1 = 7;
|
|
ictl.parm.setup.si2 = 0;
|
|
ictl.parm.setup.plan = 0;
|
|
ictl.parm.setup.screen = 0;
|
|
|
|
#ifdef DEBUG
|
|
printk(KERN_DEBUG "statstr: %s\n", ictl.num);
|
|
#endif
|
|
|
|
dev->dev_if->statcallb(&ictl);
|
|
|
|
|
|
if ((len=capi_conn_resp(chan, &skb)) < 0) {
|
|
printk(KERN_DEBUG "capi_conn_resp failed\n");
|
|
return;
|
|
}
|
|
|
|
refnum = last_ref_num++ & 0x7fffU;
|
|
chan->s_refnum = refnum;
|
|
|
|
pcbit_l2_write(dev, MSG_CONN_RESP, refnum, skb, len);
|
|
}
|
|
|
|
/*
|
|
* user has replied
|
|
* open the channel
|
|
* send CONNECT message CONNECT_ACTIVE_REQ in CAPI
|
|
*/
|
|
|
|
void cb_in_2(struct pcbit_dev * dev, struct pcbit_chan* chan,
|
|
struct callb_data *data)
|
|
{
|
|
unsigned short refnum;
|
|
struct sk_buff *skb;
|
|
int len;
|
|
|
|
if ((len = capi_conn_active_req(chan, &skb)) < 0) {
|
|
printk(KERN_DEBUG "capi_conn_active_req failed\n");
|
|
return;
|
|
}
|
|
|
|
|
|
refnum = last_ref_num++ & 0x7fffU;
|
|
chan->s_refnum = refnum;
|
|
|
|
printk(KERN_DEBUG "sending MSG_CONN_ACTV_REQ\n");
|
|
pcbit_l2_write(dev, MSG_CONN_ACTV_REQ, refnum, skb, len);
|
|
}
|
|
|
|
/*
|
|
* CONN_ACK arrived
|
|
* start b-proto selection
|
|
*
|
|
*/
|
|
|
|
void cb_in_3(struct pcbit_dev * dev, struct pcbit_chan* chan,
|
|
struct callb_data *data)
|
|
{
|
|
unsigned short refnum;
|
|
struct sk_buff *skb;
|
|
int len;
|
|
|
|
if ((len = capi_select_proto_req(chan, &skb, 0 /*incoming*/)) < 0)
|
|
{
|
|
printk("capi_select_proto_req failed\n");
|
|
return;
|
|
}
|
|
|
|
refnum = last_ref_num++ & 0x7fffU;
|
|
chan->s_refnum = refnum;
|
|
|
|
pcbit_l2_write(dev, MSG_SELP_REQ, refnum, skb, len);
|
|
|
|
}
|
|
|
|
|
|
/*
|
|
* Received disconnect ind on active state
|
|
* send disconnect resp
|
|
* send msg to user
|
|
*/
|
|
void cb_disc_1(struct pcbit_dev * dev, struct pcbit_chan* chan,
|
|
struct callb_data *data)
|
|
{
|
|
struct sk_buff *skb;
|
|
int len;
|
|
ushort refnum;
|
|
isdn_ctrl ictl;
|
|
|
|
if ((len = capi_disc_resp(chan, &skb)) < 0) {
|
|
printk("capi_disc_resp failed\n");
|
|
return;
|
|
}
|
|
|
|
refnum = last_ref_num++ & 0x7fffU;
|
|
chan->s_refnum = refnum;
|
|
|
|
pcbit_l2_write(dev, MSG_DISC_RESP, refnum, skb, len);
|
|
|
|
ictl.command = ISDN_STAT_BHUP;
|
|
ictl.driver=dev->id;
|
|
ictl.arg=chan->id;
|
|
dev->dev_if->statcallb(&ictl);
|
|
}
|
|
|
|
|
|
/*
|
|
* User HANGUP on active/call proceeding state
|
|
* send disc.req
|
|
*/
|
|
void cb_disc_2(struct pcbit_dev * dev, struct pcbit_chan* chan,
|
|
struct callb_data *data)
|
|
{
|
|
struct sk_buff *skb;
|
|
int len;
|
|
ushort refnum;
|
|
|
|
if ((len = capi_disc_req(chan->callref, &skb, CAUSE_NORMAL)) < 0)
|
|
{
|
|
printk("capi_disc_req failed\n");
|
|
return;
|
|
}
|
|
|
|
refnum = last_ref_num++ & 0x7fffU;
|
|
chan->s_refnum = refnum;
|
|
|
|
pcbit_l2_write(dev, MSG_DISC_REQ, refnum, skb, len);
|
|
}
|
|
|
|
/*
|
|
* Disc confirm received send BHUP
|
|
* Problem: when the HL driver sends the disc req itself
|
|
* LL receives BHUP
|
|
*/
|
|
void cb_disc_3(struct pcbit_dev * dev, struct pcbit_chan* chan,
|
|
struct callb_data *data)
|
|
{
|
|
isdn_ctrl ictl;
|
|
|
|
ictl.command = ISDN_STAT_BHUP;
|
|
ictl.driver=dev->id;
|
|
ictl.arg=chan->id;
|
|
dev->dev_if->statcallb(&ictl);
|
|
}
|
|
|
|
void cb_notdone(struct pcbit_dev * dev, struct pcbit_chan* chan,
|
|
struct callb_data *data)
|
|
{
|
|
}
|
|
|
|
/*
|
|
* send activate b-chan protocol
|
|
*/
|
|
void cb_selp_1(struct pcbit_dev * dev, struct pcbit_chan* chan,
|
|
struct callb_data *data)
|
|
{
|
|
struct sk_buff *skb;
|
|
int len;
|
|
ushort refnum;
|
|
|
|
if ((len = capi_activate_transp_req(chan, &skb)) < 0)
|
|
{
|
|
printk("capi_conn_activate_transp_req failed\n");
|
|
return;
|
|
}
|
|
|
|
refnum = last_ref_num++ & 0x7fffU;
|
|
chan->s_refnum = refnum;
|
|
|
|
pcbit_l2_write(dev, MSG_ACT_TRANSP_REQ, refnum, skb, len);
|
|
}
|
|
|
|
/*
|
|
* Inform User that the B-channel is available
|
|
*/
|
|
void cb_open(struct pcbit_dev * dev, struct pcbit_chan* chan,
|
|
struct callb_data *data)
|
|
{
|
|
isdn_ctrl ictl;
|
|
|
|
ictl.command = ISDN_STAT_BCONN;
|
|
ictl.driver=dev->id;
|
|
ictl.arg=chan->id;
|
|
dev->dev_if->statcallb(&ictl);
|
|
}
|
|
|
|
|
|
|