a921e9bd4e
The icn, act2000 and pcbit drivers are all for very old hardware, and it is highly unlikely that anyone is actually still using them on modern kernels, if at all. All three drivers apparently are for hardware that predates PCI being the common connector, as they are ISA-only and active PCI ISDN cards were widely available in the 1990s. Looking through the git logs, it I cannot find any indication of a patch to any of these drivers that has been tested on real hardware, only cleanups or global API changes. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Karsten Keil <isdn@linux-pingi.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
346 lines
6.7 KiB
C
346 lines
6.7 KiB
C
/*
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* Callbacks for the FSM
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*
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* Copyright (C) 1996 Universidade de Lisboa
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*
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* Written by Pedro Roque Marques (roque@di.fc.ul.pt)
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*
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* This software may be used and distributed according to the terms of
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* the GNU General Public License, incorporated herein by reference.
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*/
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/*
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* Fix: 19981230 - Carlos Morgado <chbm@techie.com>
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* Port of Nelson Escravana's <nelson.escravana@usa.net> fix to CalledPN
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* NULL pointer dereference in cb_in_1 (originally fixed in 2.0)
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*/
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#include <linux/string.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/mm.h>
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#include <linux/skbuff.h>
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#include <asm/io.h>
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#include <linux/isdnif.h>
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#include "pcbit.h"
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#include "layer2.h"
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#include "edss1.h"
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#include "callbacks.h"
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#include "capi.h"
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ushort last_ref_num = 1;
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/*
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* send_conn_req
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*
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*/
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void cb_out_1(struct pcbit_dev *dev, struct pcbit_chan *chan,
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struct callb_data *cbdata)
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{
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struct sk_buff *skb;
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int len;
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ushort refnum;
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#ifdef DEBUG
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printk(KERN_DEBUG "Called Party Number: %s\n",
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cbdata->data.setup.CalledPN);
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#endif
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/*
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* hdr - kmalloc in capi_conn_req
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* - kfree when msg has been sent
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*/
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if ((len = capi_conn_req(cbdata->data.setup.CalledPN, &skb,
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chan->proto)) < 0)
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{
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printk("capi_conn_req failed\n");
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return;
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}
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refnum = last_ref_num++ & 0x7fffU;
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chan->callref = 0;
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chan->layer2link = 0;
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chan->snum = 0;
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chan->s_refnum = refnum;
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pcbit_l2_write(dev, MSG_CONN_REQ, refnum, skb, len);
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}
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/*
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* rcv CONNECT
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* will go into ACTIVE state
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* send CONN_ACTIVE_RESP
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* send Select protocol request
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*/
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void cb_out_2(struct pcbit_dev *dev, struct pcbit_chan *chan,
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struct callb_data *data)
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{
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isdn_ctrl ictl;
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struct sk_buff *skb;
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int len;
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ushort refnum;
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if ((len = capi_conn_active_resp(chan, &skb)) < 0)
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{
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printk("capi_conn_active_req failed\n");
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return;
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}
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refnum = last_ref_num++ & 0x7fffU;
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chan->s_refnum = refnum;
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pcbit_l2_write(dev, MSG_CONN_ACTV_RESP, refnum, skb, len);
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ictl.command = ISDN_STAT_DCONN;
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ictl.driver = dev->id;
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ictl.arg = chan->id;
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dev->dev_if->statcallb(&ictl);
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/* ACTIVE D-channel */
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/* Select protocol */
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if ((len = capi_select_proto_req(chan, &skb, 1 /*outgoing*/)) < 0) {
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printk("capi_select_proto_req failed\n");
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return;
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}
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refnum = last_ref_num++ & 0x7fffU;
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chan->s_refnum = refnum;
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pcbit_l2_write(dev, MSG_SELP_REQ, refnum, skb, len);
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}
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/*
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* Incoming call received
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* inform user
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*/
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void cb_in_1(struct pcbit_dev *dev, struct pcbit_chan *chan,
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struct callb_data *cbdata)
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{
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isdn_ctrl ictl;
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unsigned short refnum;
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struct sk_buff *skb;
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int len;
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ictl.command = ISDN_STAT_ICALL;
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ictl.driver = dev->id;
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ictl.arg = chan->id;
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/*
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* ictl.num >= strlen() + strlen() + 5
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*/
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if (cbdata->data.setup.CallingPN == NULL) {
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printk(KERN_DEBUG "NULL CallingPN to phone; using 0\n");
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strcpy(ictl.parm.setup.phone, "0");
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}
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else {
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strcpy(ictl.parm.setup.phone, cbdata->data.setup.CallingPN);
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}
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if (cbdata->data.setup.CalledPN == NULL) {
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printk(KERN_DEBUG "NULL CalledPN to eazmsn; using 0\n");
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strcpy(ictl.parm.setup.eazmsn, "0");
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}
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else {
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strcpy(ictl.parm.setup.eazmsn, cbdata->data.setup.CalledPN);
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}
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ictl.parm.setup.si1 = 7;
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ictl.parm.setup.si2 = 0;
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ictl.parm.setup.plan = 0;
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ictl.parm.setup.screen = 0;
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#ifdef DEBUG
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printk(KERN_DEBUG "statstr: %s\n", ictl.num);
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#endif
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dev->dev_if->statcallb(&ictl);
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if ((len = capi_conn_resp(chan, &skb)) < 0) {
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printk(KERN_DEBUG "capi_conn_resp failed\n");
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return;
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}
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refnum = last_ref_num++ & 0x7fffU;
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chan->s_refnum = refnum;
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pcbit_l2_write(dev, MSG_CONN_RESP, refnum, skb, len);
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}
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/*
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* user has replied
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* open the channel
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* send CONNECT message CONNECT_ACTIVE_REQ in CAPI
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*/
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void cb_in_2(struct pcbit_dev *dev, struct pcbit_chan *chan,
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struct callb_data *data)
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{
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unsigned short refnum;
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struct sk_buff *skb;
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int len;
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if ((len = capi_conn_active_req(chan, &skb)) < 0) {
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printk(KERN_DEBUG "capi_conn_active_req failed\n");
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return;
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}
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refnum = last_ref_num++ & 0x7fffU;
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chan->s_refnum = refnum;
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printk(KERN_DEBUG "sending MSG_CONN_ACTV_REQ\n");
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pcbit_l2_write(dev, MSG_CONN_ACTV_REQ, refnum, skb, len);
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}
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/*
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* CONN_ACK arrived
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* start b-proto selection
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*
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*/
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void cb_in_3(struct pcbit_dev *dev, struct pcbit_chan *chan,
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struct callb_data *data)
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{
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unsigned short refnum;
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struct sk_buff *skb;
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int len;
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if ((len = capi_select_proto_req(chan, &skb, 0 /*incoming*/)) < 0)
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{
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printk("capi_select_proto_req failed\n");
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return;
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}
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refnum = last_ref_num++ & 0x7fffU;
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chan->s_refnum = refnum;
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pcbit_l2_write(dev, MSG_SELP_REQ, refnum, skb, len);
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}
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/*
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* Received disconnect ind on active state
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* send disconnect resp
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* send msg to user
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*/
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void cb_disc_1(struct pcbit_dev *dev, struct pcbit_chan *chan,
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struct callb_data *data)
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{
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struct sk_buff *skb;
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int len;
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ushort refnum;
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isdn_ctrl ictl;
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if ((len = capi_disc_resp(chan, &skb)) < 0) {
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printk("capi_disc_resp failed\n");
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return;
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}
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refnum = last_ref_num++ & 0x7fffU;
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chan->s_refnum = refnum;
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pcbit_l2_write(dev, MSG_DISC_RESP, refnum, skb, len);
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ictl.command = ISDN_STAT_BHUP;
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ictl.driver = dev->id;
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ictl.arg = chan->id;
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dev->dev_if->statcallb(&ictl);
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}
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/*
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* User HANGUP on active/call proceeding state
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* send disc.req
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*/
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void cb_disc_2(struct pcbit_dev *dev, struct pcbit_chan *chan,
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struct callb_data *data)
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{
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struct sk_buff *skb;
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int len;
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ushort refnum;
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if ((len = capi_disc_req(chan->callref, &skb, CAUSE_NORMAL)) < 0)
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{
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printk("capi_disc_req failed\n");
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return;
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}
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refnum = last_ref_num++ & 0x7fffU;
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chan->s_refnum = refnum;
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pcbit_l2_write(dev, MSG_DISC_REQ, refnum, skb, len);
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}
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/*
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* Disc confirm received send BHUP
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* Problem: when the HL driver sends the disc req itself
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* LL receives BHUP
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*/
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void cb_disc_3(struct pcbit_dev *dev, struct pcbit_chan *chan,
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struct callb_data *data)
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{
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isdn_ctrl ictl;
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ictl.command = ISDN_STAT_BHUP;
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ictl.driver = dev->id;
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ictl.arg = chan->id;
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dev->dev_if->statcallb(&ictl);
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}
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void cb_notdone(struct pcbit_dev *dev, struct pcbit_chan *chan,
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struct callb_data *data)
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{
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}
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/*
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* send activate b-chan protocol
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*/
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void cb_selp_1(struct pcbit_dev *dev, struct pcbit_chan *chan,
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struct callb_data *data)
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{
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struct sk_buff *skb;
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int len;
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ushort refnum;
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if ((len = capi_activate_transp_req(chan, &skb)) < 0)
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{
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printk("capi_conn_activate_transp_req failed\n");
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return;
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}
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refnum = last_ref_num++ & 0x7fffU;
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chan->s_refnum = refnum;
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pcbit_l2_write(dev, MSG_ACT_TRANSP_REQ, refnum, skb, len);
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}
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/*
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* Inform User that the B-channel is available
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*/
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void cb_open(struct pcbit_dev *dev, struct pcbit_chan *chan,
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struct callb_data *data)
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{
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isdn_ctrl ictl;
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ictl.command = ISDN_STAT_BCONN;
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ictl.driver = dev->id;
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ictl.arg = chan->id;
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dev->dev_if->statcallb(&ictl);
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}
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