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cpmac: do not leak struct net_device on phy_connect errors
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / isdn / gigaset / capi.c
CommitLineData
7bb5fdc2
TS		 1/*
2 * Kernel CAPI interface for the Gigaset driver
3 *
4 * Copyright (c) 2009 by Tilman Schmidt <tilman@imap.cc>.
5 *
6 * =====================================================================
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
11 * =====================================================================
12 */
13
14#include "gigaset.h"
9a58a80a
AD		 15#include <linux/proc_fs.h>
16#include <linux/seq_file.h>
7bb5fdc2
TS		 17#include <linux/isdn/capilli.h>
18#include <linux/isdn/capicmd.h>
19#include <linux/isdn/capiutil.h>
20
21/* missing from kernelcapi.h */
22#define CapiNcpiNotSupportedByProtocol 0x0001
23#define CapiFlagsNotSupportedByProtocol 0x0002
24#define CapiAlertAlreadySent 0x0003
25#define CapiFacilitySpecificFunctionNotSupported 0x3011
26
27/* missing from capicmd.h */
28#define CAPI_CONNECT_IND_BASELEN (CAPI_MSG_BASELEN+4+2+8*1)
29#define CAPI_CONNECT_ACTIVE_IND_BASELEN (CAPI_MSG_BASELEN+4+3*1)
30#define CAPI_CONNECT_B3_IND_BASELEN (CAPI_MSG_BASELEN+4+1)
31#define CAPI_CONNECT_B3_ACTIVE_IND_BASELEN (CAPI_MSG_BASELEN+4+1)
32#define CAPI_DATA_B3_REQ_LEN64 (CAPI_MSG_BASELEN+4+4+2+2+2+8)
33#define CAPI_DATA_B3_CONF_LEN (CAPI_MSG_BASELEN+4+2+2)
34#define CAPI_DISCONNECT_IND_LEN (CAPI_MSG_BASELEN+4+2)
35#define CAPI_DISCONNECT_B3_IND_BASELEN (CAPI_MSG_BASELEN+4+2+1)
36#define CAPI_FACILITY_CONF_BASELEN (CAPI_MSG_BASELEN+4+2+2+1)
37/* most _CONF messages contain only Controller/PLCI/NCCI and Info parameters */
38#define CAPI_STDCONF_LEN (CAPI_MSG_BASELEN+4+2)
39
40#define CAPI_FACILITY_HANDSET 0x0000
41#define CAPI_FACILITY_DTMF 0x0001
42#define CAPI_FACILITY_V42BIS 0x0002
43#define CAPI_FACILITY_SUPPSVC 0x0003
44#define CAPI_FACILITY_WAKEUP 0x0004
45#define CAPI_FACILITY_LI 0x0005
46
47#define CAPI_SUPPSVC_GETSUPPORTED 0x0000
48
49/* missing from capiutil.h */
50#define CAPIMSG_PLCI_PART(m) CAPIMSG_U8(m, 9)
51#define CAPIMSG_NCCI_PART(m) CAPIMSG_U16(m, 10)
52#define CAPIMSG_HANDLE_REQ(m) CAPIMSG_U16(m, 18) /* DATA_B3_REQ/_IND only! */
53#define CAPIMSG_FLAGS(m) CAPIMSG_U16(m, 20)
54#define CAPIMSG_SETCONTROLLER(m, contr) capimsg_setu8(m, 8, contr)
55#define CAPIMSG_SETPLCI_PART(m, plci) capimsg_setu8(m, 9, plci)
56#define CAPIMSG_SETNCCI_PART(m, ncci) capimsg_setu16(m, 10, ncci)
57#define CAPIMSG_SETFLAGS(m, flags) capimsg_setu16(m, 20, flags)
58
59/* parameters with differing location in DATA_B3_CONF/_RESP: */
60#define CAPIMSG_SETHANDLE_CONF(m, handle) capimsg_setu16(m, 12, handle)
61#define CAPIMSG_SETINFO_CONF(m, info) capimsg_setu16(m, 14, info)
62
63/* Flags (DATA_B3_REQ/_IND) */
64#define CAPI_FLAGS_DELIVERY_CONFIRMATION 0x04
65#define CAPI_FLAGS_RESERVED (~0x1f)
66
67/* buffer sizes */
68#define MAX_BC_OCTETS 11
69#define MAX_HLC_OCTETS 3
70#define MAX_NUMBER_DIGITS 20
71#define MAX_FMT_IE_LEN 20
72
73/* values for gigaset_capi_appl.connected */
74#define APCONN_NONE 0 /* inactive/listening */
75#define APCONN_SETUP 1 /* connecting */
76#define APCONN_ACTIVE 2 /* B channel up */
77
78/* registered application data structure */
79struct gigaset_capi_appl {
80 struct list_head ctrlist;
81 struct gigaset_capi_appl *bcnext;
82 u16 id;
83 u16 nextMessageNumber;
84 u32 listenInfoMask;
85 u32 listenCIPmask;
86 int connected;
87};
88
89/* CAPI specific controller data structure */
90struct gigaset_capi_ctr {
91 struct capi_ctr ctr;
92 struct list_head appls;
93 struct sk_buff_head sendqueue;
94 atomic_t sendqlen;
95 /* two _cmsg structures possibly used concurrently: */
96 _cmsg hcmsg; /* for message composition triggered from hardware */
97 _cmsg acmsg; /* for dissection of messages sent from application */
98 u8 bc_buf[MAX_BC_OCTETS+1];
99 u8 hlc_buf[MAX_HLC_OCTETS+1];
100 u8 cgpty_buf[MAX_NUMBER_DIGITS+3];
101 u8 cdpty_buf[MAX_NUMBER_DIGITS+2];
102};
103
104/* CIP Value table (from CAPI 2.0 standard, ch. 6.1) */
105static struct {
106 u8 *bc;
107 u8 *hlc;
108} cip2bchlc[] = {
109 [1] = { "8090A3", NULL },
110 /* Speech (A-law) */
111 [2] = { "8890", NULL },
112 /* Unrestricted digital information */
113 [3] = { "8990", NULL },
114 /* Restricted digital information */
115 [4] = { "9090A3", NULL },
116 /* 3,1 kHz audio (A-law) */
117 [5] = { "9190", NULL },
118 /* 7 kHz audio */
119 [6] = { "9890", NULL },
120 /* Video */
121 [7] = { "88C0C6E6", NULL },
122 /* Packet mode */
123 [8] = { "8890218F", NULL },
124 /* 56 kbit/s rate adaptation */
125 [9] = { "9190A5", NULL },
126 /* Unrestricted digital information with tones/announcements */
127 [16] = { "8090A3", "9181" },
128 /* Telephony */
129 [17] = { "9090A3", "9184" },
130 /* Group 2/3 facsimile */
131 [18] = { "8890", "91A1" },
132 /* Group 4 facsimile Class 1 */
133 [19] = { "8890", "91A4" },
134 /* Teletex service basic and mixed mode
135 and Group 4 facsimile service Classes II and III */
136 [20] = { "8890", "91A8" },
137 /* Teletex service basic and processable mode */
138 [21] = { "8890", "91B1" },
139 /* Teletex service basic mode */
140 [22] = { "8890", "91B2" },
141 /* International interworking for Videotex */
142 [23] = { "8890", "91B5" },
143 /* Telex */
144 [24] = { "8890", "91B8" },
145 /* Message Handling Systems in accordance with X.400 */
146 [25] = { "8890", "91C1" },
147 /* OSI application in accordance with X.200 */
148 [26] = { "9190A5", "9181" },
149 /* 7 kHz telephony */
150 [27] = { "9190A5", "916001" },
151 /* Video telephony, first connection */
152 [28] = { "8890", "916002" },
153 /* Video telephony, second connection */
154};
155
156/*
157 * helper functions
158 * ================
159 */
160
161/*
162 * emit unsupported parameter warning
163 */
164static inline void ignore_cstruct_param(struct cardstate *cs, _cstruct param,
165 char *msgname, char *paramname)
166{
167 if (param && *param)
168 dev_warn(cs->dev, "%s: ignoring unsupported parameter: %s\n",
169 msgname, paramname);
170}
171
7bb5fdc2
TS		 172/*
173 * convert an IE from Gigaset hex string to ETSI binary representation
174 * including length byte
175 * return value: result length, -1 on error
176 */
177static int encode_ie(char *in, u8 *out, int maxlen)
178{
179 int l = 0;
180 while (*in) {
003bdb27 181 if (!isxdigit(in[0]) || !isxdigit(in[1]) || l >= maxlen)
7bb5fdc2 182 return -1;
0496b55c 183 out[++l] = (hex_to_bin(in[0]) << 4) + hex_to_bin(in[1]);
7bb5fdc2
TS		 184 in += 2;
185 }
186 out[0] = l;
187 return l;
188}
189
190/*
191 * convert an IE from ETSI binary representation including length byte
192 * to Gigaset hex string
193 */
194static void decode_ie(u8 *in, char *out)
195{
196 int i = *in;
197 while (i-- > 0) {
198 /* ToDo: conversion to upper case necessary? */
199 *out++ = toupper(hex_asc_hi(*++in));
200 *out++ = toupper(hex_asc_lo(*in));
201 }
202}
203
204/*
205 * retrieve application data structure for an application ID
206 */
207static inline struct gigaset_capi_appl *
208get_appl(struct gigaset_capi_ctr *iif, u16 appl)
209{
210 struct gigaset_capi_appl *ap;
211
212 list_for_each_entry(ap, &iif->appls, ctrlist)
213 if (ap->id == appl)
214 return ap;
215 return NULL;
216}
217
218/*
219 * dump CAPI message to kernel messages for debugging
220 */
221static inline void dump_cmsg(enum debuglevel level, const char *tag, _cmsg *p)
222{
223#ifdef CONFIG_GIGASET_DEBUG
224 _cdebbuf *cdb;
225
226 if (!(gigaset_debuglevel & level))
227 return;
228
229 cdb = capi_cmsg2str(p);
230 if (cdb) {
231 gig_dbg(level, "%s: [%d] %s", tag, p->ApplId, cdb->buf);
232 cdebbuf_free(cdb);
233 } else {
234 gig_dbg(level, "%s: [%d] %s", tag, p->ApplId,
235 capi_cmd2str(p->Command, p->Subcommand));
236 }
237#endif
238}
239
240static inline void dump_rawmsg(enum debuglevel level, const char *tag,
241 unsigned char *data)
242{
243#ifdef CONFIG_GIGASET_DEBUG
244 char *dbgline;
245 int i, l;
246
247 if (!(gigaset_debuglevel & level))
248 return;
249
250 l = CAPIMSG_LEN(data);
251 if (l < 12) {
252 gig_dbg(level, "%s: ??? LEN=%04d", tag, l);
253 return;
254 }
255 gig_dbg(level, "%s: 0x%02x:0x%02x: ID=%03d #0x%04x LEN=%04d NCCI=0x%x",
256 tag, CAPIMSG_COMMAND(data), CAPIMSG_SUBCOMMAND(data),
257 CAPIMSG_APPID(data), CAPIMSG_MSGID(data), l,
258 CAPIMSG_CONTROL(data));
259 l -= 12;
260 dbgline = kmalloc(3*l, GFP_ATOMIC);
261 if (!dbgline)
262 return;
263 for (i = 0; i < l; i++) {
264 dbgline[3*i] = hex_asc_hi(data[12+i]);
265 dbgline[3*i+1] = hex_asc_lo(data[12+i]);
266 dbgline[3*i+2] = ' ';
267 }
268 dbgline[3*l-1] = '\0';
269 gig_dbg(level, " %s", dbgline);
270 kfree(dbgline);
271 if (CAPIMSG_COMMAND(data) == CAPI_DATA_B3 &&
272 (CAPIMSG_SUBCOMMAND(data) == CAPI_REQ ||
273 CAPIMSG_SUBCOMMAND(data) == CAPI_IND) &&
274 CAPIMSG_DATALEN(data) > 0) {
275 l = CAPIMSG_DATALEN(data);
276 dbgline = kmalloc(3*l, GFP_ATOMIC);
277 if (!dbgline)
278 return;
279 data += CAPIMSG_LEN(data);
280 for (i = 0; i < l; i++) {
281 dbgline[3*i] = hex_asc_hi(data[i]);
282 dbgline[3*i+1] = hex_asc_lo(data[i]);
283 dbgline[3*i+2] = ' ';
284 }
285 dbgline[3*l-1] = '\0';
286 gig_dbg(level, " %s", dbgline);
287 kfree(dbgline);
288 }
289#endif
290}
291
292/*
293 * format CAPI IE as string
294 */
295
296static const char *format_ie(const char *ie)
297{
298 static char result[3*MAX_FMT_IE_LEN];
299 int len, count;
300 char *pout = result;
301
302 if (!ie)
303 return "NULL";
304
305 count = len = ie[0];
306 if (count > MAX_FMT_IE_LEN)
307 count = MAX_FMT_IE_LEN-1;
308 while (count--) {
309 *pout++ = hex_asc_hi(*++ie);
310 *pout++ = hex_asc_lo(*ie);
311 *pout++ = ' ';
312 }
313 if (len > MAX_FMT_IE_LEN) {
314 *pout++ = '.';
315 *pout++ = '.';
316 *pout++ = '.';
317 }
318 *--pout = 0;
319 return result;
320}
321
322
323/*
324 * driver interface functions
325 * ==========================
326 */
327
328/**
329 * gigaset_skb_sent() - acknowledge transmission of outgoing skb
330 * @bcs: B channel descriptor structure.
331 * @skb: sent data.
332 *
333 * Called by hardware module {bas,ser,usb}_gigaset when the data in a
334 * skb has been successfully sent, for signalling completion to the LL.
335 */
336void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *dskb)
337{
338 struct cardstate *cs = bcs->cs;
339 struct gigaset_capi_ctr *iif = cs->iif;
340 struct gigaset_capi_appl *ap = bcs->ap;
4dd8230a 341 unsigned char *req = skb_mac_header(dskb);
7bb5fdc2
TS		 342 struct sk_buff *cskb;
343 u16 flags;
344
345 /* update statistics */
346 ++bcs->trans_up;
347
348 if (!ap) {
349 dev_err(cs->dev, "%s: no application\n", __func__);
350 return;
351 }
352
353 /* don't send further B3 messages if disconnected */
354 if (ap->connected < APCONN_ACTIVE) {
355 gig_dbg(DEBUG_LLDATA, "disconnected, discarding ack");
356 return;
357 }
358
359 /* ToDo: honor unset "delivery confirmation" bit */
4dd8230a 360 flags = CAPIMSG_FLAGS(req);
7bb5fdc2
TS		 361
362 /* build DATA_B3_CONF message */
363 cskb = alloc_skb(CAPI_DATA_B3_CONF_LEN, GFP_ATOMIC);
364 if (!cskb) {
365 dev_err(cs->dev, "%s: out of memory\n", __func__);
366 return;
367 }
368 /* frequent message, avoid _cmsg overhead */
369 CAPIMSG_SETLEN(cskb->data, CAPI_DATA_B3_CONF_LEN);
370 CAPIMSG_SETAPPID(cskb->data, ap->id);
371 CAPIMSG_SETCOMMAND(cskb->data, CAPI_DATA_B3);
372 CAPIMSG_SETSUBCOMMAND(cskb->data, CAPI_CONF);
4dd8230a 373 CAPIMSG_SETMSGID(cskb->data, CAPIMSG_MSGID(req));
7bb5fdc2
TS		 374 CAPIMSG_SETCONTROLLER(cskb->data, iif->ctr.cnr);
375 CAPIMSG_SETPLCI_PART(cskb->data, bcs->channel + 1);
376 CAPIMSG_SETNCCI_PART(cskb->data, 1);
4dd8230a 377 CAPIMSG_SETHANDLE_CONF(cskb->data, CAPIMSG_HANDLE_REQ(req));
7bb5fdc2
TS		 378 if (flags & ~CAPI_FLAGS_DELIVERY_CONFIRMATION)
379 CAPIMSG_SETINFO_CONF(cskb->data,
380 CapiFlagsNotSupportedByProtocol);
381 else
382 CAPIMSG_SETINFO_CONF(cskb->data, CAPI_NOERROR);
383
384 /* emit message */
385 dump_rawmsg(DEBUG_LLDATA, "DATA_B3_CONF", cskb->data);
386 capi_ctr_handle_message(&iif->ctr, ap->id, cskb);
387}
388EXPORT_SYMBOL_GPL(gigaset_skb_sent);
389
390/**
391 * gigaset_skb_rcvd() - pass received skb to LL
392 * @bcs: B channel descriptor structure.
393 * @skb: received data.
394 *
395 * Called by hardware module {bas,ser,usb}_gigaset when user data has
396 * been successfully received, for passing to the LL.
397 * Warning: skb must not be accessed anymore!
398 */
399void gigaset_skb_rcvd(struct bc_state *bcs, struct sk_buff *skb)
400{
401 struct cardstate *cs = bcs->cs;
402 struct gigaset_capi_ctr *iif = cs->iif;
403 struct gigaset_capi_appl *ap = bcs->ap;
404 int len = skb->len;
405
406 /* update statistics */
407 bcs->trans_down++;
408
409 if (!ap) {
410 dev_err(cs->dev, "%s: no application\n", __func__);
411 return;
412 }
413
414 /* don't send further B3 messages if disconnected */
415 if (ap->connected < APCONN_ACTIVE) {
416 gig_dbg(DEBUG_LLDATA, "disconnected, discarding data");
4dd8230a 417 dev_kfree_skb_any(skb);
7bb5fdc2
TS		 418 return;
419 }
420
421 /*
422 * prepend DATA_B3_IND message to payload
423 * Parameters: NCCI = 1, all others 0/unused
424 * frequent message, avoid _cmsg overhead
425 */
426 skb_push(skb, CAPI_DATA_B3_REQ_LEN);
427 CAPIMSG_SETLEN(skb->data, CAPI_DATA_B3_REQ_LEN);
428 CAPIMSG_SETAPPID(skb->data, ap->id);
429 CAPIMSG_SETCOMMAND(skb->data, CAPI_DATA_B3);
430 CAPIMSG_SETSUBCOMMAND(skb->data, CAPI_IND);
431 CAPIMSG_SETMSGID(skb->data, ap->nextMessageNumber++);
432 CAPIMSG_SETCONTROLLER(skb->data, iif->ctr.cnr);
433 CAPIMSG_SETPLCI_PART(skb->data, bcs->channel + 1);
434 CAPIMSG_SETNCCI_PART(skb->data, 1);
435 /* Data parameter not used */
436 CAPIMSG_SETDATALEN(skb->data, len);
437 /* Data handle parameter not used */
438 CAPIMSG_SETFLAGS(skb->data, 0);
439 /* Data64 parameter not present */
440
441 /* emit message */
442 dump_rawmsg(DEBUG_LLDATA, "DATA_B3_IND", skb->data);
443 capi_ctr_handle_message(&iif->ctr, ap->id, skb);
444}
445EXPORT_SYMBOL_GPL(gigaset_skb_rcvd);
446
447/**
448 * gigaset_isdn_rcv_err() - signal receive error
449 * @bcs: B channel descriptor structure.
450 *
451 * Called by hardware module {bas,ser,usb}_gigaset when a receive error
452 * has occurred, for signalling to the LL.
453 */
454void gigaset_isdn_rcv_err(struct bc_state *bcs)
455{
456 /* if currently ignoring packets, just count down */
457 if (bcs->ignore) {
458 bcs->ignore--;
459 return;
460 }
461
462 /* update statistics */
463 bcs->corrupted++;
464
465 /* ToDo: signal error -> LL */
466}
467EXPORT_SYMBOL_GPL(gigaset_isdn_rcv_err);
468
469/**
470 * gigaset_isdn_icall() - signal incoming call
471 * @at_state: connection state structure.
472 *
473 * Called by main module at tasklet level to notify the LL that an incoming
474 * call has been received. @at_state contains the parameters of the call.
475 *
476 * Return value: call disposition (ICALL_*)
477 */
478int gigaset_isdn_icall(struct at_state_t *at_state)
479{
480 struct cardstate *cs = at_state->cs;
481 struct bc_state *bcs = at_state->bcs;
482 struct gigaset_capi_ctr *iif = cs->iif;
483 struct gigaset_capi_appl *ap;
484 u32 actCIPmask;
485 struct sk_buff *skb;
486 unsigned int msgsize;
487 int i;
488
489 /*
490 * ToDo: signal calls without a free B channel, too
491 * (requires a u8 handle for the at_state structure that can
492 * be stored in the PLCI and used in the CONNECT_RESP message
493 * handler to retrieve it)
494 */
495 if (!bcs)
496 return ICALL_IGNORE;
497
498 /* prepare CONNECT_IND message, using B channel number as PLCI */
499 capi_cmsg_header(&iif->hcmsg, 0, CAPI_CONNECT, CAPI_IND, 0,
500 iif->ctr.cnr | ((bcs->channel + 1) << 8));
501
502 /* minimum size, all structs empty */
503 msgsize = CAPI_CONNECT_IND_BASELEN;
504
505 /* Bearer Capability (mandatory) */
506 if (at_state->str_var[STR_ZBC]) {
507 /* pass on BC from Gigaset */
508 if (encode_ie(at_state->str_var[STR_ZBC], iif->bc_buf,
509 MAX_BC_OCTETS) < 0) {
510 dev_warn(cs->dev, "RING ignored - bad BC %s\n",
511 at_state->str_var[STR_ZBC]);
512 return ICALL_IGNORE;
513 }
514
515 /* look up corresponding CIP value */
516 iif->hcmsg.CIPValue = 0; /* default if nothing found */
517 for (i = 0; i < ARRAY_SIZE(cip2bchlc); i++)
518 if (cip2bchlc[i].bc != NULL &&
519 cip2bchlc[i].hlc == NULL &&
520 !strcmp(cip2bchlc[i].bc,
521 at_state->str_var[STR_ZBC])) {
522 iif->hcmsg.CIPValue = i;
523 break;
524 }
525 } else {
526 /* no BC (internal call): assume CIP 1 (speech, A-law) */
527 iif->hcmsg.CIPValue = 1;
528 encode_ie(cip2bchlc[1].bc, iif->bc_buf, MAX_BC_OCTETS);
529 }
530 iif->hcmsg.BC = iif->bc_buf;
531 msgsize += iif->hcmsg.BC[0];
532
533 /* High Layer Compatibility (optional) */
534 if (at_state->str_var[STR_ZHLC]) {
535 /* pass on HLC from Gigaset */
536 if (encode_ie(at_state->str_var[STR_ZHLC], iif->hlc_buf,
537 MAX_HLC_OCTETS) < 0) {
538 dev_warn(cs->dev, "RING ignored - bad HLC %s\n",
539 at_state->str_var[STR_ZHLC]);
540 return ICALL_IGNORE;
541 }
542 iif->hcmsg.HLC = iif->hlc_buf;
543 msgsize += iif->hcmsg.HLC[0];
544
545 /* look up corresponding CIP value */
546 /* keep BC based CIP value if none found */
547 if (at_state->str_var[STR_ZBC])
548 for (i = 0; i < ARRAY_SIZE(cip2bchlc); i++)
549 if (cip2bchlc[i].hlc != NULL &&
550 !strcmp(cip2bchlc[i].hlc,
551 at_state->str_var[STR_ZHLC]) &&
552 !strcmp(cip2bchlc[i].bc,
553 at_state->str_var[STR_ZBC])) {
554 iif->hcmsg.CIPValue = i;
555 break;
556 }
557 }
558
559 /* Called Party Number (optional) */
560 if (at_state->str_var[STR_ZCPN]) {
561 i = strlen(at_state->str_var[STR_ZCPN]);
562 if (i > MAX_NUMBER_DIGITS) {
563 dev_warn(cs->dev, "RING ignored - bad number %s\n",
564 at_state->str_var[STR_ZBC]);
565 return ICALL_IGNORE;
566 }
567 iif->cdpty_buf[0] = i + 1;
568 iif->cdpty_buf[1] = 0x80; /* type / numbering plan unknown */
569 memcpy(iif->cdpty_buf+2, at_state->str_var[STR_ZCPN], i);
570 iif->hcmsg.CalledPartyNumber = iif->cdpty_buf;
571 msgsize += iif->hcmsg.CalledPartyNumber[0];
572 }
573
574 /* Calling Party Number (optional) */
575 if (at_state->str_var[STR_NMBR]) {
576 i = strlen(at_state->str_var[STR_NMBR]);
577 if (i > MAX_NUMBER_DIGITS) {
578 dev_warn(cs->dev, "RING ignored - bad number %s\n",
579 at_state->str_var[STR_ZBC]);
580 return ICALL_IGNORE;
581 }
582 iif->cgpty_buf[0] = i + 2;
583 iif->cgpty_buf[1] = 0x00; /* type / numbering plan unknown */
584 iif->cgpty_buf[2] = 0x80; /* pres. allowed, not screened */
585 memcpy(iif->cgpty_buf+3, at_state->str_var[STR_NMBR], i);
586 iif->hcmsg.CallingPartyNumber = iif->cgpty_buf;
587 msgsize += iif->hcmsg.CallingPartyNumber[0];
588 }
589
590 /* remaining parameters (not supported, always left NULL):
591 * - CalledPartySubaddress
592 * - CallingPartySubaddress
593 * - AdditionalInfo
594 * - BChannelinformation
595 * - Keypadfacility
596 * - Useruserdata
597 * - Facilitydataarray
598 */
599
600 gig_dbg(DEBUG_CMD, "icall: PLCI %x CIP %d BC %s",
601 iif->hcmsg.adr.adrPLCI, iif->hcmsg.CIPValue,
602 format_ie(iif->hcmsg.BC));
603 gig_dbg(DEBUG_CMD, "icall: HLC %s",
604 format_ie(iif->hcmsg.HLC));
605 gig_dbg(DEBUG_CMD, "icall: CgPty %s",
606 format_ie(iif->hcmsg.CallingPartyNumber));
607 gig_dbg(DEBUG_CMD, "icall: CdPty %s",
608 format_ie(iif->hcmsg.CalledPartyNumber));
609
610 /* scan application list for matching listeners */
611 bcs->ap = NULL;
612 actCIPmask = 1 | (1 << iif->hcmsg.CIPValue);
613 list_for_each_entry(ap, &iif->appls, ctrlist)
614 if (actCIPmask & ap->listenCIPmask) {
615 /* build CONNECT_IND message for this application */
616 iif->hcmsg.ApplId = ap->id;
617 iif->hcmsg.Messagenumber = ap->nextMessageNumber++;
618
619 skb = alloc_skb(msgsize, GFP_ATOMIC);
620 if (!skb) {
621 dev_err(cs->dev, "%s: out of memory\n",
622 __func__);
623 break;
624 }
625 capi_cmsg2message(&iif->hcmsg, __skb_put(skb, msgsize));
626 dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
627
628 /* add to listeners on this B channel, update state */
629 ap->bcnext = bcs->ap;
630 bcs->ap = ap;
631 bcs->chstate |= CHS_NOTIFY_LL;
632 ap->connected = APCONN_SETUP;
633
634 /* emit message */
635 capi_ctr_handle_message(&iif->ctr, ap->id, skb);
636 }
637
638 /*
639 * Return "accept" if any listeners.
640 * Gigaset will send ALERTING.
641 * There doesn't seem to be a way to avoid this.
642 */
643 return bcs->ap ? ICALL_ACCEPT : ICALL_IGNORE;
644}
645
646/*
647 * send a DISCONNECT_IND message to an application
648 * does not sleep, clobbers the controller's hcmsg structure
649 */
650static void send_disconnect_ind(struct bc_state *bcs,
651 struct gigaset_capi_appl *ap, u16 reason)
652{
653 struct cardstate *cs = bcs->cs;
654 struct gigaset_capi_ctr *iif = cs->iif;
655 struct sk_buff *skb;
656
657 if (ap->connected == APCONN_NONE)
658 return;
659
660 capi_cmsg_header(&iif->hcmsg, ap->id, CAPI_DISCONNECT, CAPI_IND,
661 ap->nextMessageNumber++,
662 iif->ctr.cnr | ((bcs->channel + 1) << 8));
663 iif->hcmsg.Reason = reason;
664 skb = alloc_skb(CAPI_DISCONNECT_IND_LEN, GFP_ATOMIC);
665 if (!skb) {
666 dev_err(cs->dev, "%s: out of memory\n", __func__);
667 return;
668 }
669 capi_cmsg2message(&iif->hcmsg, __skb_put(skb, CAPI_DISCONNECT_IND_LEN));
670 dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
671 ap->connected = APCONN_NONE;
672 capi_ctr_handle_message(&iif->ctr, ap->id, skb);
673}
674
675/*
676 * send a DISCONNECT_B3_IND message to an application
677 * Parameters: NCCI = 1, NCPI empty, Reason_B3 = 0
678 * does not sleep, clobbers the controller's hcmsg structure
679 */
680static void send_disconnect_b3_ind(struct bc_state *bcs,
681 struct gigaset_capi_appl *ap)
682{
683 struct cardstate *cs = bcs->cs;
684 struct gigaset_capi_ctr *iif = cs->iif;
685 struct sk_buff *skb;
686
687 /* nothing to do if no logical connection active */
688 if (ap->connected < APCONN_ACTIVE)
689 return;
690 ap->connected = APCONN_SETUP;
691
692 capi_cmsg_header(&iif->hcmsg, ap->id, CAPI_DISCONNECT_B3, CAPI_IND,
693 ap->nextMessageNumber++,
694 iif->ctr.cnr | ((bcs->channel + 1) << 8) | (1 << 16));
695 skb = alloc_skb(CAPI_DISCONNECT_B3_IND_BASELEN, GFP_ATOMIC);
696 if (!skb) {
697 dev_err(cs->dev, "%s: out of memory\n", __func__);
698 return;
699 }
700 capi_cmsg2message(&iif->hcmsg,
701 __skb_put(skb, CAPI_DISCONNECT_B3_IND_BASELEN));
702 dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
703 capi_ctr_handle_message(&iif->ctr, ap->id, skb);
704}
705
706/**
707 * gigaset_isdn_connD() - signal D channel connect
708 * @bcs: B channel descriptor structure.
709 *
710 * Called by main module at tasklet level to notify the LL that the D channel
711 * connection has been established.
712 */
713void gigaset_isdn_connD(struct bc_state *bcs)
714{
715 struct cardstate *cs = bcs->cs;
716 struct gigaset_capi_ctr *iif = cs->iif;
717 struct gigaset_capi_appl *ap = bcs->ap;
718 struct sk_buff *skb;
719 unsigned int msgsize;
720
721 if (!ap) {
722 dev_err(cs->dev, "%s: no application\n", __func__);
723 return;
724 }
725 while (ap->bcnext) {
726 /* this should never happen */
727 dev_warn(cs->dev, "%s: dropping extra application %u\n",
728 __func__, ap->bcnext->id);
729 send_disconnect_ind(bcs, ap->bcnext,
730 CapiCallGivenToOtherApplication);
731 ap->bcnext = ap->bcnext->bcnext;
732 }
733 if (ap->connected == APCONN_NONE) {
734 dev_warn(cs->dev, "%s: application %u not connected\n",
735 __func__, ap->id);
736 return;
737 }
738
739 /* prepare CONNECT_ACTIVE_IND message
740 * Note: LLC not supported by device
741 */
742 capi_cmsg_header(&iif->hcmsg, ap->id, CAPI_CONNECT_ACTIVE, CAPI_IND,
743 ap->nextMessageNumber++,
744 iif->ctr.cnr | ((bcs->channel + 1) << 8));
745
746 /* minimum size, all structs empty */
747 msgsize = CAPI_CONNECT_ACTIVE_IND_BASELEN;
748
749 /* ToDo: set parameter: Connected number
750 * (requires ev-layer state machine extension to collect
751 * ZCON device reply)
752 */
753
754 /* build and emit CONNECT_ACTIVE_IND message */
755 skb = alloc_skb(msgsize, GFP_ATOMIC);
756 if (!skb) {
757 dev_err(cs->dev, "%s: out of memory\n", __func__);
758 return;
759 }
760 capi_cmsg2message(&iif->hcmsg, __skb_put(skb, msgsize));
761 dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
762 capi_ctr_handle_message(&iif->ctr, ap->id, skb);
763}
764
765/**
766 * gigaset_isdn_hupD() - signal D channel hangup
767 * @bcs: B channel descriptor structure.
768 *
769 * Called by main module at tasklet level to notify the LL that the D channel
770 * connection has been shut down.
771 */
772void gigaset_isdn_hupD(struct bc_state *bcs)
773{
774 struct gigaset_capi_appl *ap;
775
776 /*
777 * ToDo: pass on reason code reported by device
778 * (requires ev-layer state machine extension to collect
779 * ZCAU device reply)
780 */
781 for (ap = bcs->ap; ap != NULL; ap = ap->bcnext) {
782 send_disconnect_b3_ind(bcs, ap);
783 send_disconnect_ind(bcs, ap, 0);
784 }
785 bcs->ap = NULL;
786}
787
788/**
789 * gigaset_isdn_connB() - signal B channel connect
790 * @bcs: B channel descriptor structure.
791 *
792 * Called by main module at tasklet level to notify the LL that the B channel
793 * connection has been established.
794 */
795void gigaset_isdn_connB(struct bc_state *bcs)
796{
797 struct cardstate *cs = bcs->cs;
798 struct gigaset_capi_ctr *iif = cs->iif;
799 struct gigaset_capi_appl *ap = bcs->ap;
800 struct sk_buff *skb;
801 unsigned int msgsize;
802 u8 command;
803
804 if (!ap) {
805 dev_err(cs->dev, "%s: no application\n", __func__);
806 return;
807 }
808 while (ap->bcnext) {
809 /* this should never happen */
810 dev_warn(cs->dev, "%s: dropping extra application %u\n",
811 __func__, ap->bcnext->id);
812 send_disconnect_ind(bcs, ap->bcnext,
813 CapiCallGivenToOtherApplication);
814 ap->bcnext = ap->bcnext->bcnext;
815 }
816 if (!ap->connected) {
817 dev_warn(cs->dev, "%s: application %u not connected\n",
818 __func__, ap->id);
819 return;
820 }
821
822 /*
823 * emit CONNECT_B3_ACTIVE_IND if we already got CONNECT_B3_REQ;
824 * otherwise we have to emit CONNECT_B3_IND first, and follow up with
825 * CONNECT_B3_ACTIVE_IND in reply to CONNECT_B3_RESP
826 * Parameters in both cases always: NCCI = 1, NCPI empty
827 */
828 if (ap->connected >= APCONN_ACTIVE) {
829 command = CAPI_CONNECT_B3_ACTIVE;
830 msgsize = CAPI_CONNECT_B3_ACTIVE_IND_BASELEN;
831 } else {
832 command = CAPI_CONNECT_B3;
833 msgsize = CAPI_CONNECT_B3_IND_BASELEN;
834 }
835 capi_cmsg_header(&iif->hcmsg, ap->id, command, CAPI_IND,
836 ap->nextMessageNumber++,
837 iif->ctr.cnr | ((bcs->channel + 1) << 8) | (1 << 16));
838 skb = alloc_skb(msgsize, GFP_ATOMIC);
839 if (!skb) {
840 dev_err(cs->dev, "%s: out of memory\n", __func__);
841 return;
842 }
843 capi_cmsg2message(&iif->hcmsg, __skb_put(skb, msgsize));
844 dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
845 ap->connected = APCONN_ACTIVE;
846 capi_ctr_handle_message(&iif->ctr, ap->id, skb);
847}
848
849/**
850 * gigaset_isdn_hupB() - signal B channel hangup
851 * @bcs: B channel descriptor structure.
852 *
853 * Called by main module to notify the LL that the B channel connection has
854 * been shut down.
855 */
856void gigaset_isdn_hupB(struct bc_state *bcs)
857{
858 struct cardstate *cs = bcs->cs;
859 struct gigaset_capi_appl *ap = bcs->ap;
860
861 /* ToDo: assure order of DISCONNECT_B3_IND and DISCONNECT_IND ? */
862
863 if (!ap) {
864 dev_err(cs->dev, "%s: no application\n", __func__);
865 return;
866 }
867
868 send_disconnect_b3_ind(bcs, ap);
869}
870
871/**
872 * gigaset_isdn_start() - signal device availability
873 * @cs: device descriptor structure.
874 *
875 * Called by main module to notify the LL that the device is available for
876 * use.
877 */
878void gigaset_isdn_start(struct cardstate *cs)
879{
880 struct gigaset_capi_ctr *iif = cs->iif;
881
882 /* fill profile data: manufacturer name */
883 strcpy(iif->ctr.manu, "Siemens");
884 /* CAPI and device version */
885 iif->ctr.version.majorversion = 2; /* CAPI 2.0 */
886 iif->ctr.version.minorversion = 0;
887 /* ToDo: check/assert cs->gotfwver? */
888 iif->ctr.version.majormanuversion = cs->fwver[0];
889 iif->ctr.version.minormanuversion = cs->fwver[1];
890 /* number of B channels supported */
891 iif->ctr.profile.nbchannel = cs->channels;
892 /* global options: internal controller, supplementary services */
893 iif->ctr.profile.goptions = 0x11;
894 /* B1 protocols: 64 kbit/s HDLC or transparent */
895 iif->ctr.profile.support1 = 0x03;
896 /* B2 protocols: transparent only */
897 /* ToDo: X.75 SLP ? */
898 iif->ctr.profile.support2 = 0x02;
899 /* B3 protocols: transparent only */
900 iif->ctr.profile.support3 = 0x01;
901 /* no serial number */
902 strcpy(iif->ctr.serial, "0");
903 capi_ctr_ready(&iif->ctr);
904}
905
906/**
907 * gigaset_isdn_stop() - signal device unavailability
908 * @cs: device descriptor structure.
909 *
910 * Called by main module to notify the LL that the device is no longer
911 * available for use.
912 */
913void gigaset_isdn_stop(struct cardstate *cs)
914{
915 struct gigaset_capi_ctr *iif = cs->iif;
916 capi_ctr_down(&iif->ctr);
917}
918
919/*
920 * kernel CAPI callback methods
921 * ============================
922 */
923
7bb5fdc2
TS		 924/*
925 * register CAPI application
926 */
927static void gigaset_register_appl(struct capi_ctr *ctr, u16 appl,
928 capi_register_params *rp)
929{
930 struct gigaset_capi_ctr *iif
931 = container_of(ctr, struct gigaset_capi_ctr, ctr);
932 struct cardstate *cs = ctr->driverdata;
933 struct gigaset_capi_appl *ap;
934
935 list_for_each_entry(ap, &iif->appls, ctrlist)
936 if (ap->id == appl) {
937 dev_notice(cs->dev,
938 "application %u already registered\n", appl);
939 return;
940 }
941
942 ap = kzalloc(sizeof(*ap), GFP_KERNEL);
943 if (!ap) {
944 dev_err(cs->dev, "%s: out of memory\n", __func__);
945 return;
946 }
947 ap->id = appl;
948
949 list_add(&ap->ctrlist, &iif->appls);
950}
951
952/*
953 * release CAPI application
954 */
955static void gigaset_release_appl(struct capi_ctr *ctr, u16 appl)
956{
957 struct gigaset_capi_ctr *iif
958 = container_of(ctr, struct gigaset_capi_ctr, ctr);
959 struct cardstate *cs = iif->ctr.driverdata;
960 struct gigaset_capi_appl *ap, *tmp;
961
962 list_for_each_entry_safe(ap, tmp, &iif->appls, ctrlist)
963 if (ap->id == appl) {
964 if (ap->connected != APCONN_NONE) {
965 dev_err(cs->dev,
966 "%s: application %u still connected\n",
967 __func__, ap->id);
968 /* ToDo: clear active connection */
969 }
970 list_del(&ap->ctrlist);
971 kfree(ap);
972 }
973
974}
975
976/*
977 * =====================================================================
978 * outgoing CAPI message handler
979 * =====================================================================
980 */
981
982/*
983 * helper function: emit reply message with given Info value
984 */
985static void send_conf(struct gigaset_capi_ctr *iif,
986 struct gigaset_capi_appl *ap,
987 struct sk_buff *skb,
988 u16 info)
989{
990 /*
991 * _CONF replies always only have NCCI and Info parameters
992 * so they'll fit into the _REQ message skb
993 */
994 capi_cmsg_answer(&iif->acmsg);
995 iif->acmsg.Info = info;
996 capi_cmsg2message(&iif->acmsg, skb->data);
997 __skb_trim(skb, CAPI_STDCONF_LEN);
998 dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
999 capi_ctr_handle_message(&iif->ctr, ap->id, skb);
1000}
1001
1002/*
1003 * process FACILITY_REQ message
1004 */
1005static void do_facility_req(struct gigaset_capi_ctr *iif,
1006 struct gigaset_capi_appl *ap,
1007 struct sk_buff *skb)
1008{
1009 struct cardstate *cs = iif->ctr.driverdata;
6c911916 1010 _cmsg *cmsg = &iif->acmsg;
7bb5fdc2
TS		 1011 struct sk_buff *cskb;
1012 u8 *pparam;
1013 unsigned int msgsize = CAPI_FACILITY_CONF_BASELEN;
1014 u16 function, info;
1015 static u8 confparam[10]; /* max. 9 octets + length byte */
1016
1017 /* decode message */
6c911916
TS		 1018 capi_message2cmsg(cmsg, skb->data);
1019 dump_cmsg(DEBUG_CMD, __func__, cmsg);
7bb5fdc2
TS		 1020
1021 /*
1022 * Facility Request Parameter is not decoded by capi_message2cmsg()
1023 * encoding depends on Facility Selector
1024 */
6c911916 1025 switch (cmsg->FacilitySelector) {
7bb5fdc2
TS		 1026 case CAPI_FACILITY_DTMF: /* ToDo */
1027 info = CapiFacilityNotSupported;
1028 confparam[0] = 2; /* length */
1029 /* DTMF information: Unknown DTMF request */
1030 capimsg_setu16(confparam, 1, 2);
1031 break;
1032
1033 case CAPI_FACILITY_V42BIS: /* not supported */
1034 info = CapiFacilityNotSupported;
1035 confparam[0] = 2; /* length */
1036 /* V.42 bis information: not available */
1037 capimsg_setu16(confparam, 1, 1);
1038 break;
1039
1040 case CAPI_FACILITY_SUPPSVC:
1041 /* decode Function parameter */
6c911916 1042 pparam = cmsg->FacilityRequestParameter;
7bb5fdc2
TS		 1043 if (pparam == NULL || *pparam < 2) {
1044 dev_notice(cs->dev, "%s: %s missing\n", "FACILITY_REQ",
1045 "Facility Request Parameter");
1046 send_conf(iif, ap, skb, CapiIllMessageParmCoding);
1047 return;
1048 }
1049 function = CAPIMSG_U16(pparam, 1);
1050 switch (function) {
1051 case CAPI_SUPPSVC_GETSUPPORTED:
1052 info = CapiSuccess;
1053 /* Supplementary Service specific parameter */
1054 confparam[3] = 6; /* length */
1055 /* Supplementary services info: Success */
1056 capimsg_setu16(confparam, 4, CapiSuccess);
1057 /* Supported Services: none */
1058 capimsg_setu32(confparam, 6, 0);
1059 break;
1060 /* ToDo: add supported services */
1061 default:
1062 info = CapiFacilitySpecificFunctionNotSupported;
1063 /* Supplementary Service specific parameter */
1064 confparam[3] = 2; /* length */
1065 /* Supplementary services info: not supported */
1066 capimsg_setu16(confparam, 4,
1067 CapiSupplementaryServiceNotSupported);
1068 }
1069
1070 /* Facility confirmation parameter */
1071 confparam[0] = confparam[3] + 3; /* total length */
1072 /* Function: copy from _REQ message */
1073 capimsg_setu16(confparam, 1, function);
1074 /* Supplementary Service specific parameter already set above */
1075 break;
1076
1077 case CAPI_FACILITY_WAKEUP: /* ToDo */
1078 info = CapiFacilityNotSupported;
1079 confparam[0] = 2; /* length */
1080 /* Number of accepted awake request parameters: 0 */
1081 capimsg_setu16(confparam, 1, 0);
1082 break;
1083
1084 default:
1085 info = CapiFacilityNotSupported;
1086 confparam[0] = 0; /* empty struct */
1087 }
1088
1089 /* send FACILITY_CONF with given Info and confirmation parameter */
6c911916
TS		 1090 capi_cmsg_answer(cmsg);
1091 cmsg->Info = info;
1092 cmsg->FacilityConfirmationParameter = confparam;
7bb5fdc2
TS		 1093 msgsize += confparam[0]; /* length */
1094 cskb = alloc_skb(msgsize, GFP_ATOMIC);
1095 if (!cskb) {
1096 dev_err(cs->dev, "%s: out of memory\n", __func__);
1097 return;
1098 }
6c911916
TS		 1099 capi_cmsg2message(cmsg, __skb_put(cskb, msgsize));
1100 dump_cmsg(DEBUG_CMD, __func__, cmsg);
1101 capi_ctr_handle_message(&iif->ctr, ap->id, cskb);
7bb5fdc2
TS		 1102}
1103
1104
1105/*
1106 * process LISTEN_REQ message
1107 * just store the masks in the application data structure
1108 */
1109static void do_listen_req(struct gigaset_capi_ctr *iif,
1110 struct gigaset_capi_appl *ap,
1111 struct sk_buff *skb)
1112{
1113 /* decode message */
1114 capi_message2cmsg(&iif->acmsg, skb->data);
1115 dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
1116
1117 /* store listening parameters */
1118 ap->listenInfoMask = iif->acmsg.InfoMask;
1119 ap->listenCIPmask = iif->acmsg.CIPmask;
1120 send_conf(iif, ap, skb, CapiSuccess);
1121}
1122
1123/*
1124 * process ALERT_REQ message
1125 * nothing to do, Gigaset always alerts anyway
1126 */
1127static void do_alert_req(struct gigaset_capi_ctr *iif,
1128 struct gigaset_capi_appl *ap,
1129 struct sk_buff *skb)
1130{
1131 /* decode message */
1132 capi_message2cmsg(&iif->acmsg, skb->data);
1133 dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
1134 send_conf(iif, ap, skb, CapiAlertAlreadySent);
1135}
1136
1137/*
1138 * process CONNECT_REQ message
1139 * allocate a B channel, prepare dial commands, queue a DIAL event,
1140 * emit CONNECT_CONF reply
1141 */
1142static void do_connect_req(struct gigaset_capi_ctr *iif,
1143 struct gigaset_capi_appl *ap,
1144 struct sk_buff *skb)
1145{
1146 struct cardstate *cs = iif->ctr.driverdata;
1147 _cmsg *cmsg = &iif->acmsg;
1148 struct bc_state *bcs;
1149 char **commands;
1150 char *s;
1151 u8 *pp;
1152 int i, l;
1153 u16 info;
1154
1155 /* decode message */
6c911916
TS		 1156 capi_message2cmsg(cmsg, skb->data);
1157 dump_cmsg(DEBUG_CMD, __func__, cmsg);
7bb5fdc2
TS		 1158
1159 /* get free B channel & construct PLCI */
1160 bcs = gigaset_get_free_channel(cs);
1161 if (!bcs) {
1162 dev_notice(cs->dev, "%s: no B channel available\n",
1163 "CONNECT_REQ");
1164 send_conf(iif, ap, skb, CapiNoPlciAvailable);
1165 return;
1166 }
1167 ap->bcnext = NULL;
1168 bcs->ap = ap;
1169 cmsg->adr.adrPLCI |= (bcs->channel + 1) << 8;
1170
1171 /* build command table */
1172 commands = kzalloc(AT_NUM*(sizeof *commands), GFP_KERNEL);
1173 if (!commands)
1174 goto oom;
1175
1176 /* encode parameter: Called party number */
1177 pp = cmsg->CalledPartyNumber;
1178 if (pp == NULL || *pp == 0) {
1179 dev_notice(cs->dev, "%s: %s missing\n",
1180 "CONNECT_REQ", "Called party number");
1181 info = CapiIllMessageParmCoding;
1182 goto error;
1183 }
1184 l = *pp++;
1185 /* check type of number/numbering plan byte */
1186 switch (*pp) {
1187 case 0x80: /* unknown type / unknown numbering plan */
1188 case 0x81: /* unknown type / ISDN/Telephony numbering plan */
1189 break;
1190 default: /* others: warn about potential misinterpretation */
1191 dev_notice(cs->dev, "%s: %s type/plan 0x%02x unsupported\n",
1192 "CONNECT_REQ", "Called party number", *pp);
1193 }
1194 pp++;
1195 l--;
1196 /* translate "**" internal call prefix to CTP value */
1197 if (l >= 2 && pp[0] == '*' && pp[1] == '*') {
1198 s = "^SCTP=0\r";
1199 pp += 2;
1200 l -= 2;
1201 } else {
1202 s = "^SCTP=1\r";
1203 }
1204 commands[AT_TYPE] = kstrdup(s, GFP_KERNEL);
1205 if (!commands[AT_TYPE])
1206 goto oom;
1207 commands[AT_DIAL] = kmalloc(l+3, GFP_KERNEL);
1208 if (!commands[AT_DIAL])
1209 goto oom;
22077ebc 1210 snprintf(commands[AT_DIAL], l+3, "D%.*s\r", l, pp);
7bb5fdc2
TS		 1211
1212 /* encode parameter: Calling party number */
1213 pp = cmsg->CallingPartyNumber;
1214 if (pp != NULL && *pp > 0) {
1215 l = *pp++;
1216
1217 /* check type of number/numbering plan byte */
1218 /* ToDo: allow for/handle Ext=1? */
1219 switch (*pp) {
1220 case 0x00: /* unknown type / unknown numbering plan */
1221 case 0x01: /* unknown type / ISDN/Telephony num. plan */
1222 break;
1223 default:
1224 dev_notice(cs->dev,
1225 "%s: %s type/plan 0x%02x unsupported\n",
1226 "CONNECT_REQ", "Calling party number", *pp);
1227 }
1228 pp++;
1229 l--;
1230
1231 /* check presentation indicator */
1232 if (!l) {
1233 dev_notice(cs->dev, "%s: %s IE truncated\n",
1234 "CONNECT_REQ", "Calling party number");
1235 info = CapiIllMessageParmCoding;
1236 goto error;
1237 }
1238 switch (*pp & 0xfc) { /* ignore Screening indicator */
1239 case 0x80: /* Presentation allowed */
1240 s = "^SCLIP=1\r";
1241 break;
1242 case 0xa0: /* Presentation restricted */
1243 s = "^SCLIP=0\r";
1244 break;
1245 default:
1246 dev_notice(cs->dev, "%s: invalid %s 0x%02x\n",
1247 "CONNECT_REQ",
1248 "Presentation/Screening indicator",
1249 *pp);
1250 s = "^SCLIP=1\r";
1251 }
1252 commands[AT_CLIP] = kstrdup(s, GFP_KERNEL);
1253 if (!commands[AT_CLIP])
1254 goto oom;
1255 pp++;
1256 l--;
1257
1258 if (l) {
1259 /* number */
1260 commands[AT_MSN] = kmalloc(l+8, GFP_KERNEL);
1261 if (!commands[AT_MSN])
1262 goto oom;
1263 snprintf(commands[AT_MSN], l+8, "^SMSN=%*s\r", l, pp);
1264 }
1265 }
1266
1267 /* check parameter: CIP Value */
6ad34145 1268 if (cmsg->CIPValue >= ARRAY_SIZE(cip2bchlc) ||
7bb5fdc2
TS		 1269 (cmsg->CIPValue > 0 && cip2bchlc[cmsg->CIPValue].bc == NULL)) {
1270 dev_notice(cs->dev, "%s: unknown CIP value %d\n",
1271 "CONNECT_REQ", cmsg->CIPValue);
1272 info = CapiCipValueUnknown;
1273 goto error;
1274 }
1275
1276 /* check/encode parameter: BC */
1277 if (cmsg->BC && cmsg->BC[0]) {
1278 /* explicit BC overrides CIP */
1279 l = 2*cmsg->BC[0] + 7;
1280 commands[AT_BC] = kmalloc(l, GFP_KERNEL);
1281 if (!commands[AT_BC])
1282 goto oom;
1283 strcpy(commands[AT_BC], "^SBC=");
1284 decode_ie(cmsg->BC, commands[AT_BC]+5);
1285 strcpy(commands[AT_BC] + l - 2, "\r");
1286 } else if (cip2bchlc[cmsg->CIPValue].bc) {
1287 l = strlen(cip2bchlc[cmsg->CIPValue].bc) + 7;
1288 commands[AT_BC] = kmalloc(l, GFP_KERNEL);
1289 if (!commands[AT_BC])
1290 goto oom;
1291 snprintf(commands[AT_BC], l, "^SBC=%s\r",
1292 cip2bchlc[cmsg->CIPValue].bc);
1293 }
1294
1295 /* check/encode parameter: HLC */
1296 if (cmsg->HLC && cmsg->HLC[0]) {
1297 /* explicit HLC overrides CIP */
1298 l = 2*cmsg->HLC[0] + 7;
1299 commands[AT_HLC] = kmalloc(l, GFP_KERNEL);
1300 if (!commands[AT_HLC])
1301 goto oom;
1302 strcpy(commands[AT_HLC], "^SHLC=");
1303 decode_ie(cmsg->HLC, commands[AT_HLC]+5);
1304 strcpy(commands[AT_HLC] + l - 2, "\r");
1305 } else if (cip2bchlc[cmsg->CIPValue].hlc) {
1306 l = strlen(cip2bchlc[cmsg->CIPValue].hlc) + 7;
1307 commands[AT_HLC] = kmalloc(l, GFP_KERNEL);
1308 if (!commands[AT_HLC])
1309 goto oom;
1310 snprintf(commands[AT_HLC], l, "^SHLC=%s\r",
1311 cip2bchlc[cmsg->CIPValue].hlc);
1312 }
1313
1314 /* check/encode parameter: B Protocol */
1315 if (cmsg->BProtocol == CAPI_DEFAULT) {
1316 bcs->proto2 = L2_HDLC;
1317 dev_warn(cs->dev,
1318 "B2 Protocol X.75 SLP unsupported, using Transparent\n");
1319 } else {
1320 switch (cmsg->B1protocol) {
1321 case 0:
1322 bcs->proto2 = L2_HDLC;
1323 break;
1324 case 1:
1325 bcs->proto2 = L2_BITSYNC;
1326 break;
1327 default:
1328 dev_warn(cs->dev,
1329 "B1 Protocol %u unsupported, using Transparent\n",
1330 cmsg->B1protocol);
1331 bcs->proto2 = L2_BITSYNC;
1332 }
1333 if (cmsg->B2protocol != 1)
1334 dev_warn(cs->dev,
1335 "B2 Protocol %u unsupported, using Transparent\n",
1336 cmsg->B2protocol);
1337 if (cmsg->B3protocol != 0)
1338 dev_warn(cs->dev,
1339 "B3 Protocol %u unsupported, using Transparent\n",
1340 cmsg->B3protocol);
1341 ignore_cstruct_param(cs, cmsg->B1configuration,
1342 "CONNECT_REQ", "B1 Configuration");
1343 ignore_cstruct_param(cs, cmsg->B2configuration,
1344 "CONNECT_REQ", "B2 Configuration");
1345 ignore_cstruct_param(cs, cmsg->B3configuration,
1346 "CONNECT_REQ", "B3 Configuration");
1347 }
1348 commands[AT_PROTO] = kmalloc(9, GFP_KERNEL);
1349 if (!commands[AT_PROTO])
1350 goto oom;
1351 snprintf(commands[AT_PROTO], 9, "^SBPR=%u\r", bcs->proto2);
1352
1353 /* ToDo: check/encode remaining parameters */
1354 ignore_cstruct_param(cs, cmsg->CalledPartySubaddress,
1355 "CONNECT_REQ", "Called pty subaddr");
1356 ignore_cstruct_param(cs, cmsg->CallingPartySubaddress,
1357 "CONNECT_REQ", "Calling pty subaddr");
1358 ignore_cstruct_param(cs, cmsg->LLC,
1359 "CONNECT_REQ", "LLC");
6c911916
TS		 1360 if (cmsg->AdditionalInfo != CAPI_DEFAULT) {
1361 ignore_cstruct_param(cs, cmsg->BChannelinformation,
1362 "CONNECT_REQ", "B Channel Information");
1363 ignore_cstruct_param(cs, cmsg->Keypadfacility,
1364 "CONNECT_REQ", "Keypad Facility");
1365 ignore_cstruct_param(cs, cmsg->Useruserdata,
1366 "CONNECT_REQ", "User-User Data");
1367 ignore_cstruct_param(cs, cmsg->Facilitydataarray,
1368 "CONNECT_REQ", "Facility Data Array");
1369 }
7bb5fdc2
TS		 1370
1371 /* encode parameter: B channel to use */
1372 commands[AT_ISO] = kmalloc(9, GFP_KERNEL);
1373 if (!commands[AT_ISO])
1374 goto oom;
1375 snprintf(commands[AT_ISO], 9, "^SISO=%u\r",
1376 (unsigned) bcs->channel + 1);
1377
1378 /* queue & schedule EV_DIAL event */
1379 if (!gigaset_add_event(cs, &bcs->at_state, EV_DIAL, commands,
1528b18f
TS		 1380 bcs->at_state.seq_index, NULL)) {
1381 info = CAPI_MSGOSRESOURCEERR;
1382 goto error;
1383 }
7bb5fdc2
TS		 1384 gigaset_schedule_event(cs);
1385 ap->connected = APCONN_SETUP;
1386 send_conf(iif, ap, skb, CapiSuccess);
1387 return;
1388
1389oom:
1390 dev_err(cs->dev, "%s: out of memory\n", __func__);
1391 info = CAPI_MSGOSRESOURCEERR;
1392error:
1393 if (commands)
1394 for (i = 0; i < AT_NUM; i++)
1395 kfree(commands[i]);
1396 kfree(commands);
1397 gigaset_free_channel(bcs);
1398 send_conf(iif, ap, skb, info);
1399}
1400
1401/*
1402 * process CONNECT_RESP message
1403 * checks protocol parameters and queues an ACCEPT or HUP event
1404 */
1405static void do_connect_resp(struct gigaset_capi_ctr *iif,
1406 struct gigaset_capi_appl *ap,
1407 struct sk_buff *skb)
1408{
1409 struct cardstate *cs = iif->ctr.driverdata;
1410 _cmsg *cmsg = &iif->acmsg;
1411 struct bc_state *bcs;
1412 struct gigaset_capi_appl *oap;
1413 int channel;
1414
1415 /* decode message */
6c911916
TS		 1416 capi_message2cmsg(cmsg, skb->data);
1417 dump_cmsg(DEBUG_CMD, __func__, cmsg);
4dd8230a 1418 dev_kfree_skb_any(skb);
7bb5fdc2
TS		 1419
1420 /* extract and check channel number from PLCI */
1421 channel = (cmsg->adr.adrPLCI >> 8) & 0xff;
1422 if (!channel || channel > cs->channels) {
1423 dev_notice(cs->dev, "%s: invalid %s 0x%02x\n",
1424 "CONNECT_RESP", "PLCI", cmsg->adr.adrPLCI);
1425 return;
1426 }
1427 bcs = cs->bcs + channel - 1;
1428
1429 switch (cmsg->Reject) {
1430 case 0: /* Accept */
1431 /* drop all competing applications, keep only this one */
1432 for (oap = bcs->ap; oap != NULL; oap = oap->bcnext)
1433 if (oap != ap)
1434 send_disconnect_ind(bcs, oap,
1435 CapiCallGivenToOtherApplication);
1436 ap->bcnext = NULL;
1437 bcs->ap = ap;
1438 bcs->chstate |= CHS_NOTIFY_LL;
1439
1440 /* check/encode B channel protocol */
1441 if (cmsg->BProtocol == CAPI_DEFAULT) {
1442 bcs->proto2 = L2_HDLC;
1443 dev_warn(cs->dev,
1444 "B2 Protocol X.75 SLP unsupported, using Transparent\n");
1445 } else {
1446 switch (cmsg->B1protocol) {
1447 case 0:
1448 bcs->proto2 = L2_HDLC;
1449 break;
1450 case 1:
1451 bcs->proto2 = L2_BITSYNC;
1452 break;
1453 default:
1454 dev_warn(cs->dev,
1455 "B1 Protocol %u unsupported, using Transparent\n",
1456 cmsg->B1protocol);
1457 bcs->proto2 = L2_BITSYNC;
1458 }
1459 if (cmsg->B2protocol != 1)
1460 dev_warn(cs->dev,
1461 "B2 Protocol %u unsupported, using Transparent\n",
1462 cmsg->B2protocol);
1463 if (cmsg->B3protocol != 0)
1464 dev_warn(cs->dev,
1465 "B3 Protocol %u unsupported, using Transparent\n",
1466 cmsg->B3protocol);
1467 ignore_cstruct_param(cs, cmsg->B1configuration,
1468 "CONNECT_RESP", "B1 Configuration");
1469 ignore_cstruct_param(cs, cmsg->B2configuration,
1470 "CONNECT_RESP", "B2 Configuration");
1471 ignore_cstruct_param(cs, cmsg->B3configuration,
1472 "CONNECT_RESP", "B3 Configuration");
1473 }
1474
1475 /* ToDo: check/encode remaining parameters */
1476 ignore_cstruct_param(cs, cmsg->ConnectedNumber,
1477 "CONNECT_RESP", "Connected Number");
1478 ignore_cstruct_param(cs, cmsg->ConnectedSubaddress,
1479 "CONNECT_RESP", "Connected Subaddress");
1480 ignore_cstruct_param(cs, cmsg->LLC,
1481 "CONNECT_RESP", "LLC");
6c911916
TS		 1482 if (cmsg->AdditionalInfo != CAPI_DEFAULT) {
1483 ignore_cstruct_param(cs, cmsg->BChannelinformation,
1484 "CONNECT_RESP", "BChannel Information");
1485 ignore_cstruct_param(cs, cmsg->Keypadfacility,
1486 "CONNECT_RESP", "Keypad Facility");
1487 ignore_cstruct_param(cs, cmsg->Useruserdata,
1488 "CONNECT_RESP", "User-User Data");
1489 ignore_cstruct_param(cs, cmsg->Facilitydataarray,
1490 "CONNECT_RESP", "Facility Data Array");
1491 }
7bb5fdc2
TS		 1492
1493 /* Accept call */
1494 if (!gigaset_add_event(cs, &cs->bcs[channel-1].at_state,
1495 EV_ACCEPT, NULL, 0, NULL))
1496 return;
7bb5fdc2
TS		 1497 gigaset_schedule_event(cs);
1498 return;
1499
1500 case 1: /* Ignore */
1501 /* send DISCONNECT_IND to this application */
1502 send_disconnect_ind(bcs, ap, 0);
1503
1504 /* remove it from the list of listening apps */
1505 if (bcs->ap == ap) {
1506 bcs->ap = ap->bcnext;
1507 if (bcs->ap == NULL)
1508 /* last one: stop ev-layer hupD notifications */
1509 bcs->chstate &= ~CHS_NOTIFY_LL;
1510 return;
1511 }
1512 for (oap = bcs->ap; oap != NULL; oap = oap->bcnext) {
1513 if (oap->bcnext == ap) {
1514 oap->bcnext = oap->bcnext->bcnext;
1515 return;
1516 }
1517 }
1518 dev_err(cs->dev, "%s: application %u not found\n",
1519 __func__, ap->id);
1520 return;
1521
1522 default: /* Reject */
1523 /* drop all competing applications, keep only this one */
1524 for (oap = bcs->ap; oap != NULL; oap = oap->bcnext)
1525 if (oap != ap)
1526 send_disconnect_ind(bcs, oap,
1527 CapiCallGivenToOtherApplication);
1528 ap->bcnext = NULL;
1529 bcs->ap = ap;
1530
1531 /* reject call - will trigger DISCONNECT_IND for this app */
1532 dev_info(cs->dev, "%s: Reject=%x\n",
1533 "CONNECT_RESP", cmsg->Reject);
1534 if (!gigaset_add_event(cs, &cs->bcs[channel-1].at_state,
1535 EV_HUP, NULL, 0, NULL))
1536 return;
7bb5fdc2
TS		 1537 gigaset_schedule_event(cs);
1538 return;
1539 }
1540}
1541
1542/*
1543 * process CONNECT_B3_REQ message
1544 * build NCCI and emit CONNECT_B3_CONF reply
1545 */
1546static void do_connect_b3_req(struct gigaset_capi_ctr *iif,
1547 struct gigaset_capi_appl *ap,
1548 struct sk_buff *skb)
1549{
1550 struct cardstate *cs = iif->ctr.driverdata;
6c911916 1551 _cmsg *cmsg = &iif->acmsg;
7bb5fdc2
TS		 1552 int channel;
1553
1554 /* decode message */
6c911916
TS		 1555 capi_message2cmsg(cmsg, skb->data);
1556 dump_cmsg(DEBUG_CMD, __func__, cmsg);
7bb5fdc2
TS		 1557
1558 /* extract and check channel number from PLCI */
6c911916 1559 channel = (cmsg->adr.adrPLCI >> 8) & 0xff;
7bb5fdc2
TS		 1560 if (!channel || channel > cs->channels) {
1561 dev_notice(cs->dev, "%s: invalid %s 0x%02x\n",
6c911916 1562 "CONNECT_B3_REQ", "PLCI", cmsg->adr.adrPLCI);
7bb5fdc2
TS		 1563 send_conf(iif, ap, skb, CapiIllContrPlciNcci);
1564 return;
1565 }
1566
1567 /* mark logical connection active */
1568 ap->connected = APCONN_ACTIVE;
1569
1570 /* build NCCI: always 1 (one B3 connection only) */
6c911916 1571 cmsg->adr.adrNCCI |= 1 << 16;
7bb5fdc2
TS		 1572
1573 /* NCPI parameter: not applicable for B3 Transparent */
6c911916
TS		 1574 ignore_cstruct_param(cs, cmsg->NCPI, "CONNECT_B3_REQ", "NCPI");
1575 send_conf(iif, ap, skb, (cmsg->NCPI && cmsg->NCPI[0]) ?
1576 CapiNcpiNotSupportedByProtocol : CapiSuccess);
7bb5fdc2
TS		 1577}
1578
1579/*
1580 * process CONNECT_B3_RESP message
1581 * Depending on the Reject parameter, either emit CONNECT_B3_ACTIVE_IND
1582 * or queue EV_HUP and emit DISCONNECT_B3_IND.
1583 * The emitted message is always shorter than the received one,
1584 * allowing to reuse the skb.
1585 */
1586static void do_connect_b3_resp(struct gigaset_capi_ctr *iif,
1587 struct gigaset_capi_appl *ap,
1588 struct sk_buff *skb)
1589{
1590 struct cardstate *cs = iif->ctr.driverdata;
6c911916
TS		 1591 _cmsg *cmsg = &iif->acmsg;
1592 struct bc_state *bcs;
7bb5fdc2
TS		 1593 int channel;
1594 unsigned int msgsize;
1595 u8 command;
1596
1597 /* decode message */
6c911916
TS		 1598 capi_message2cmsg(cmsg, skb->data);
1599 dump_cmsg(DEBUG_CMD, __func__, cmsg);
7bb5fdc2
TS		 1600
1601 /* extract and check channel number and NCCI */
6c911916 1602 channel = (cmsg->adr.adrNCCI >> 8) & 0xff;
7bb5fdc2 1603 if (!channel || channel > cs->channels ||
6c911916 1604 ((cmsg->adr.adrNCCI >> 16) & 0xffff) != 1) {
7bb5fdc2 1605 dev_notice(cs->dev, "%s: invalid %s 0x%02x\n",
6c911916 1606 "CONNECT_B3_RESP", "NCCI", cmsg->adr.adrNCCI);
4dd8230a 1607 dev_kfree_skb_any(skb);
7bb5fdc2
TS		 1608 return;
1609 }
1610 bcs = &cs->bcs[channel-1];
1611
6c911916 1612 if (cmsg->Reject) {
7bb5fdc2
TS		 1613 /* Reject: clear B3 connect received flag */
1614 ap->connected = APCONN_SETUP;
1615
1616 /* trigger hangup, causing eventual DISCONNECT_IND */
1617 if (!gigaset_add_event(cs, &bcs->at_state,
1618 EV_HUP, NULL, 0, NULL)) {
4dd8230a 1619 dev_kfree_skb_any(skb);
7bb5fdc2
TS		 1620 return;
1621 }
7bb5fdc2
TS		 1622 gigaset_schedule_event(cs);
1623
1624 /* emit DISCONNECT_B3_IND */
1625 command = CAPI_DISCONNECT_B3;
1626 msgsize = CAPI_DISCONNECT_B3_IND_BASELEN;
1627 } else {
1628 /*
1629 * Accept: emit CONNECT_B3_ACTIVE_IND immediately, as
1630 * we only send CONNECT_B3_IND if the B channel is up
1631 */
1632 command = CAPI_CONNECT_B3_ACTIVE;
1633 msgsize = CAPI_CONNECT_B3_ACTIVE_IND_BASELEN;
1634 }
6c911916
TS		 1635 capi_cmsg_header(cmsg, ap->id, command, CAPI_IND,
1636 ap->nextMessageNumber++, cmsg->adr.adrNCCI);
7bb5fdc2 1637 __skb_trim(skb, msgsize);
6c911916
TS		 1638 capi_cmsg2message(cmsg, skb->data);
1639 dump_cmsg(DEBUG_CMD, __func__, cmsg);
7bb5fdc2
TS		 1640 capi_ctr_handle_message(&iif->ctr, ap->id, skb);
1641}
1642
1643/*
1644 * process DISCONNECT_REQ message
1645 * schedule EV_HUP and emit DISCONNECT_B3_IND if necessary,
1646 * emit DISCONNECT_CONF reply
1647 */
1648static void do_disconnect_req(struct gigaset_capi_ctr *iif,
1649 struct gigaset_capi_appl *ap,
1650 struct sk_buff *skb)
1651{
1652 struct cardstate *cs = iif->ctr.driverdata;
6c911916 1653 _cmsg *cmsg = &iif->acmsg;
7bb5fdc2
TS		 1654 struct bc_state *bcs;
1655 _cmsg *b3cmsg;
1656 struct sk_buff *b3skb;
1657 int channel;
1658
1659 /* decode message */
6c911916
TS		 1660 capi_message2cmsg(cmsg, skb->data);
1661 dump_cmsg(DEBUG_CMD, __func__, cmsg);
7bb5fdc2
TS		 1662
1663 /* extract and check channel number from PLCI */
6c911916 1664 channel = (cmsg->adr.adrPLCI >> 8) & 0xff;
7bb5fdc2
TS		 1665 if (!channel || channel > cs->channels) {
1666 dev_notice(cs->dev, "%s: invalid %s 0x%02x\n",
6c911916 1667 "DISCONNECT_REQ", "PLCI", cmsg->adr.adrPLCI);
7bb5fdc2
TS		 1668 send_conf(iif, ap, skb, CapiIllContrPlciNcci);
1669 return;
1670 }
1671 bcs = cs->bcs + channel - 1;
1672
1673 /* ToDo: process parameter: Additional info */
6c911916
TS		 1674 if (cmsg->AdditionalInfo != CAPI_DEFAULT) {
1675 ignore_cstruct_param(cs, cmsg->BChannelinformation,
1676 "DISCONNECT_REQ", "B Channel Information");
1677 ignore_cstruct_param(cs, cmsg->Keypadfacility,
1678 "DISCONNECT_REQ", "Keypad Facility");
1679 ignore_cstruct_param(cs, cmsg->Useruserdata,
1680 "DISCONNECT_REQ", "User-User Data");
1681 ignore_cstruct_param(cs, cmsg->Facilitydataarray,
1682 "DISCONNECT_REQ", "Facility Data Array");
1683 }
7bb5fdc2
TS		 1684
1685 /* skip if DISCONNECT_IND already sent */
1686 if (!ap->connected)
1687 return;
1688
1689 /* check for active logical connection */
1690 if (ap->connected >= APCONN_ACTIVE) {
1691 /*
1692 * emit DISCONNECT_B3_IND with cause 0x3301
1693 * use separate cmsg structure, as the content of iif->acmsg
1694 * is still needed for creating the _CONF message
1695 */
1696 b3cmsg = kmalloc(sizeof(*b3cmsg), GFP_KERNEL);
1697 if (!b3cmsg) {
1698 dev_err(cs->dev, "%s: out of memory\n", __func__);
1699 send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR);
1700 return;
1701 }
1702 capi_cmsg_header(b3cmsg, ap->id, CAPI_DISCONNECT_B3, CAPI_IND,
1703 ap->nextMessageNumber++,
6c911916 1704 cmsg->adr.adrPLCI | (1 << 16));
7bb5fdc2
TS		 1705 b3cmsg->Reason_B3 = CapiProtocolErrorLayer1;
1706 b3skb = alloc_skb(CAPI_DISCONNECT_B3_IND_BASELEN, GFP_KERNEL);
1707 if (b3skb == NULL) {
1708 dev_err(cs->dev, "%s: out of memory\n", __func__);
1709 send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR);
1710 return;
1711 }
1712 capi_cmsg2message(b3cmsg,
1713 __skb_put(b3skb, CAPI_DISCONNECT_B3_IND_BASELEN));
1714 kfree(b3cmsg);
1715 capi_ctr_handle_message(&iif->ctr, ap->id, b3skb);
1716 }
1717
1718 /* trigger hangup, causing eventual DISCONNECT_IND */
1719 if (!gigaset_add_event(cs, &bcs->at_state, EV_HUP, NULL, 0, NULL)) {
7bb5fdc2
TS		 1720 send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR);
1721 return;
1722 }
7bb5fdc2
TS		 1723 gigaset_schedule_event(cs);
1724
1725 /* emit reply */
1726 send_conf(iif, ap, skb, CapiSuccess);
1727}
1728
1729/*
1730 * process DISCONNECT_B3_REQ message
1731 * schedule EV_HUP and emit DISCONNECT_B3_CONF reply
1732 */
1733static void do_disconnect_b3_req(struct gigaset_capi_ctr *iif,
1734 struct gigaset_capi_appl *ap,
1735 struct sk_buff *skb)
1736{
1737 struct cardstate *cs = iif->ctr.driverdata;
6c911916 1738 _cmsg *cmsg = &iif->acmsg;
7bb5fdc2
TS		 1739 int channel;
1740
1741 /* decode message */
6c911916
TS		 1742 capi_message2cmsg(cmsg, skb->data);
1743 dump_cmsg(DEBUG_CMD, __func__, cmsg);
7bb5fdc2
TS		 1744
1745 /* extract and check channel number and NCCI */
6c911916 1746 channel = (cmsg->adr.adrNCCI >> 8) & 0xff;
7bb5fdc2 1747 if (!channel || channel > cs->channels ||
6c911916 1748 ((cmsg->adr.adrNCCI >> 16) & 0xffff) != 1) {
7bb5fdc2 1749 dev_notice(cs->dev, "%s: invalid %s 0x%02x\n",
6c911916 1750 "DISCONNECT_B3_REQ", "NCCI", cmsg->adr.adrNCCI);
7bb5fdc2
TS		 1751 send_conf(iif, ap, skb, CapiIllContrPlciNcci);
1752 return;
1753 }
1754
1755 /* reject if logical connection not active */
1756 if (ap->connected < APCONN_ACTIVE) {
1757 send_conf(iif, ap, skb,
1758 CapiMessageNotSupportedInCurrentState);
1759 return;
1760 }
1761
1762 /* trigger hangup, causing eventual DISCONNECT_B3_IND */
1763 if (!gigaset_add_event(cs, &cs->bcs[channel-1].at_state,
1764 EV_HUP, NULL, 0, NULL)) {
7bb5fdc2
TS		 1765 send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR);
1766 return;
1767 }
7bb5fdc2
TS		 1768 gigaset_schedule_event(cs);
1769
1770 /* NCPI parameter: not applicable for B3 Transparent */
6c911916 1771 ignore_cstruct_param(cs, cmsg->NCPI,
7bb5fdc2 1772 "DISCONNECT_B3_REQ", "NCPI");
6c911916
TS		 1773 send_conf(iif, ap, skb, (cmsg->NCPI && cmsg->NCPI[0]) ?
1774 CapiNcpiNotSupportedByProtocol : CapiSuccess);
7bb5fdc2
TS		 1775}
1776
1777/*
1778 * process DATA_B3_REQ message
1779 */
1780static void do_data_b3_req(struct gigaset_capi_ctr *iif,
1781 struct gigaset_capi_appl *ap,
1782 struct sk_buff *skb)
1783{
1784 struct cardstate *cs = iif->ctr.driverdata;
1785 int channel = CAPIMSG_PLCI_PART(skb->data);
1786 u16 ncci = CAPIMSG_NCCI_PART(skb->data);
1787 u16 msglen = CAPIMSG_LEN(skb->data);
1788 u16 datalen = CAPIMSG_DATALEN(skb->data);
1789 u16 flags = CAPIMSG_FLAGS(skb->data);
1790
1791 /* frequent message, avoid _cmsg overhead */
1792 dump_rawmsg(DEBUG_LLDATA, "DATA_B3_REQ", skb->data);
1793
1794 gig_dbg(DEBUG_LLDATA,
1795 "Receiving data from LL (ch: %d, flg: %x, sz: %d|%d)",
1796 channel, flags, msglen, datalen);
1797
1798 /* check parameters */
1799 if (channel == 0 || channel > cs->channels || ncci != 1) {
1800 dev_notice(cs->dev, "%s: invalid %s 0x%02x\n",
1801 "DATA_B3_REQ", "NCCI", CAPIMSG_NCCI(skb->data));
1802 send_conf(iif, ap, skb, CapiIllContrPlciNcci);
1803 return;
1804 }
1805 if (msglen != CAPI_DATA_B3_REQ_LEN && msglen != CAPI_DATA_B3_REQ_LEN64)
1806 dev_notice(cs->dev, "%s: unexpected length %d\n",
1807 "DATA_B3_REQ", msglen);
1808 if (msglen + datalen != skb->len)
1809 dev_notice(cs->dev, "%s: length mismatch (%d+%d!=%d)\n",
1810 "DATA_B3_REQ", msglen, datalen, skb->len);
1811 if (msglen + datalen > skb->len) {
1812 /* message too short for announced data length */
1813 send_conf(iif, ap, skb, CapiIllMessageParmCoding); /* ? */
1814 return;
1815 }
1816 if (flags & CAPI_FLAGS_RESERVED) {
1817 dev_notice(cs->dev, "%s: reserved flags set (%x)\n",
1818 "DATA_B3_REQ", flags);
1819 send_conf(iif, ap, skb, CapiIllMessageParmCoding);
1820 return;
1821 }
1822
1823 /* reject if logical connection not active */
1824 if (ap->connected < APCONN_ACTIVE) {
1825 send_conf(iif, ap, skb, CapiMessageNotSupportedInCurrentState);
1826 return;
1827 }
1828
4dd8230a
TS		 1829 /* pull CAPI message into link layer header */
1830 skb_reset_mac_header(skb);
1831 skb->mac_len = msglen;
7bb5fdc2 1832 skb_pull(skb, msglen);
4dd8230a
TS		 1833
1834 /* pass to device-specific module */
7bb5fdc2
TS		 1835 if (cs->ops->send_skb(&cs->bcs[channel-1], skb) < 0) {
1836 send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR);
1837 return;
1838 }
1839
1840 /* DATA_B3_CONF reply will be sent by gigaset_skb_sent() */
1841
1842 /*
1843 * ToDo: honor unset "delivery confirmation" bit
1844 * (send DATA_B3_CONF immediately?)
1845 */
1846}
1847
1848/*
1849 * process RESET_B3_REQ message
1850 * just always reply "not supported by current protocol"
1851 */
1852static void do_reset_b3_req(struct gigaset_capi_ctr *iif,
1853 struct gigaset_capi_appl *ap,
1854 struct sk_buff *skb)
1855{
1856 /* decode message */
1857 capi_message2cmsg(&iif->acmsg, skb->data);
1858 dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
1859 send_conf(iif, ap, skb,
1860 CapiResetProcedureNotSupportedByCurrentProtocol);
1861}
1862
1863/*
1864 * dump unsupported/ignored messages at most twice per minute,
1865 * some apps send those very frequently
1866 */
1867static unsigned long ignored_msg_dump_time;
1868
1869/*
1870 * unsupported CAPI message handler
1871 */
1872static void do_unsupported(struct gigaset_capi_ctr *iif,
1873 struct gigaset_capi_appl *ap,
1874 struct sk_buff *skb)
1875{
1876 /* decode message */
1877 capi_message2cmsg(&iif->acmsg, skb->data);
1878 if (printk_timed_ratelimit(&ignored_msg_dump_time, 30 * 1000))
1879 dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
1880 send_conf(iif, ap, skb, CapiMessageNotSupportedInCurrentState);
1881}
1882
1883/*
1884 * CAPI message handler: no-op
1885 */
1886static void do_nothing(struct gigaset_capi_ctr *iif,
1887 struct gigaset_capi_appl *ap,
1888 struct sk_buff *skb)
1889{
1890 if (printk_timed_ratelimit(&ignored_msg_dump_time, 30 * 1000)) {
1891 /* decode message */
1892 capi_message2cmsg(&iif->acmsg, skb->data);
1893 dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
1894 }
4dd8230a 1895 dev_kfree_skb_any(skb);
7bb5fdc2
TS		 1896}
1897
1898static void do_data_b3_resp(struct gigaset_capi_ctr *iif,
1899 struct gigaset_capi_appl *ap,
1900 struct sk_buff *skb)
1901{
1902 dump_rawmsg(DEBUG_LLDATA, __func__, skb->data);
4dd8230a 1903 dev_kfree_skb_any(skb);
7bb5fdc2
TS		 1904}
1905
1906/* table of outgoing CAPI message handlers with lookup function */
1907typedef void (*capi_send_handler_t)(struct gigaset_capi_ctr *,
1908 struct gigaset_capi_appl *,
1909 struct sk_buff *);
1910
1911static struct {
1912 u16 cmd;
1913 capi_send_handler_t handler;
1914} capi_send_handler_table[] = {
1915 /* most frequent messages first for faster lookup */
1916 { CAPI_DATA_B3_REQ, do_data_b3_req },
1917 { CAPI_DATA_B3_RESP, do_data_b3_resp },
1918
1919 { CAPI_ALERT_REQ, do_alert_req },
1920 { CAPI_CONNECT_ACTIVE_RESP, do_nothing },
1921 { CAPI_CONNECT_B3_ACTIVE_RESP, do_nothing },
1922 { CAPI_CONNECT_B3_REQ, do_connect_b3_req },
1923 { CAPI_CONNECT_B3_RESP, do_connect_b3_resp },
1924 { CAPI_CONNECT_B3_T90_ACTIVE_RESP, do_nothing },
1925 { CAPI_CONNECT_REQ, do_connect_req },
1926 { CAPI_CONNECT_RESP, do_connect_resp },
1927 { CAPI_DISCONNECT_B3_REQ, do_disconnect_b3_req },
1928 { CAPI_DISCONNECT_B3_RESP, do_nothing },
1929 { CAPI_DISCONNECT_REQ, do_disconnect_req },
1930 { CAPI_DISCONNECT_RESP, do_nothing },
1931 { CAPI_FACILITY_REQ, do_facility_req },
1932 { CAPI_FACILITY_RESP, do_nothing },
1933 { CAPI_LISTEN_REQ, do_listen_req },
1934 { CAPI_SELECT_B_PROTOCOL_REQ, do_unsupported },
1935 { CAPI_RESET_B3_REQ, do_reset_b3_req },
1936 { CAPI_RESET_B3_RESP, do_nothing },
1937
1938 /*
1939 * ToDo: support overlap sending (requires ev-layer state
1940 * machine extension to generate additional ATD commands)
1941 */
1942 { CAPI_INFO_REQ, do_unsupported },
1943 { CAPI_INFO_RESP, do_nothing },
1944
1945 /*
1946 * ToDo: what's the proper response for these?
1947 */
1948 { CAPI_MANUFACTURER_REQ, do_nothing },
1949 { CAPI_MANUFACTURER_RESP, do_nothing },
1950};
1951
1952/* look up handler */
1953static inline capi_send_handler_t lookup_capi_send_handler(const u16 cmd)
1954{
1955 size_t i;
1956
1957 for (i = 0; i < ARRAY_SIZE(capi_send_handler_table); i++)
1958 if (capi_send_handler_table[i].cmd == cmd)
1959 return capi_send_handler_table[i].handler;
1960 return NULL;
1961}
1962
1963
1964/**
1965 * gigaset_send_message() - accept a CAPI message from an application
1966 * @ctr: controller descriptor structure.
1967 * @skb: CAPI message.
1968 *
1969 * Return value: CAPI error code
1970 * Note: capidrv (and probably others, too) only uses the return value to
1971 * decide whether it has to free the skb (only if result != CAPI_NOERROR (0))
1972 */
1973static u16 gigaset_send_message(struct capi_ctr *ctr, struct sk_buff *skb)
1974{
1975 struct gigaset_capi_ctr *iif
1976 = container_of(ctr, struct gigaset_capi_ctr, ctr);
1977 struct cardstate *cs = ctr->driverdata;
1978 struct gigaset_capi_appl *ap;
1979 capi_send_handler_t handler;
1980
1981 /* can only handle linear sk_buffs */
1982 if (skb_linearize(skb) < 0) {
1983 dev_warn(cs->dev, "%s: skb_linearize failed\n", __func__);
1984 return CAPI_MSGOSRESOURCEERR;
1985 }
1986
1987 /* retrieve application data structure */
1988 ap = get_appl(iif, CAPIMSG_APPID(skb->data));
1989 if (!ap) {
1990 dev_notice(cs->dev, "%s: application %u not registered\n",
1991 __func__, CAPIMSG_APPID(skb->data));
1992 return CAPI_ILLAPPNR;
1993 }
1994
1995 /* look up command */
1996 handler = lookup_capi_send_handler(CAPIMSG_CMD(skb->data));
1997 if (!handler) {
1998 /* unknown/unsupported message type */
1999 if (printk_ratelimit())
2000 dev_notice(cs->dev, "%s: unsupported message %u\n",
2001 __func__, CAPIMSG_CMD(skb->data));
2002 return CAPI_ILLCMDORSUBCMDORMSGTOSMALL;
2003 }
2004
2005 /* serialize */
2006 if (atomic_add_return(1, &iif->sendqlen) > 1) {
2007 /* queue behind other messages */
2008 skb_queue_tail(&iif->sendqueue, skb);
2009 return CAPI_NOERROR;
2010 }
2011
2012 /* process message */
2013 handler(iif, ap, skb);
2014
2015 /* process other messages arrived in the meantime */
2016 while (atomic_sub_return(1, &iif->sendqlen) > 0) {
2017 skb = skb_dequeue(&iif->sendqueue);
2018 if (!skb) {
2019 /* should never happen */
2020 dev_err(cs->dev, "%s: send queue empty\n", __func__);
2021 continue;
2022 }
2023 ap = get_appl(iif, CAPIMSG_APPID(skb->data));
2024 if (!ap) {
2025 /* could that happen? */
2026 dev_warn(cs->dev, "%s: application %u vanished\n",
2027 __func__, CAPIMSG_APPID(skb->data));
2028 continue;
2029 }
2030 handler = lookup_capi_send_handler(CAPIMSG_CMD(skb->data));
2031 if (!handler) {
2032 /* should never happen */
2033 dev_err(cs->dev, "%s: handler %x vanished\n",
2034 __func__, CAPIMSG_CMD(skb->data));
2035 continue;
2036 }
2037 handler(iif, ap, skb);
2038 }
2039
2040 return CAPI_NOERROR;
2041}
2042
2043/**
2044 * gigaset_procinfo() - build single line description for controller
2045 * @ctr: controller descriptor structure.
2046 *
2047 * Return value: pointer to generated string (null terminated)
2048 */
2049static char *gigaset_procinfo(struct capi_ctr *ctr)
2050{
2051 return ctr->name; /* ToDo: more? */
2052}
2053
9a58a80a 2054static int gigaset_proc_show(struct seq_file *m, void *v)
7bb5fdc2 2055{
9a58a80a 2056 struct capi_ctr *ctr = m->private;
7bb5fdc2
TS		 2057 struct cardstate *cs = ctr->driverdata;
2058 char *s;
2059 int i;
9a58a80a
AD		 2060
2061 seq_printf(m, "%-16s %s\n", "name", ctr->name);
2062 seq_printf(m, "%-16s %s %s\n", "dev",
7bb5fdc2 2063 dev_driver_string(cs->dev), dev_name(cs->dev));
9a58a80a 2064 seq_printf(m, "%-16s %d\n", "id", cs->myid);
7bb5fdc2 2065 if (cs->gotfwver)
9a58a80a 2066 seq_printf(m, "%-16s %d.%d.%d.%d\n", "firmware",
7bb5fdc2 2067 cs->fwver[0], cs->fwver[1], cs->fwver[2], cs->fwver[3]);
9a58a80a
AD		 2068 seq_printf(m, "%-16s %d\n", "channels", cs->channels);
2069 seq_printf(m, "%-16s %s\n", "onechannel", cs->onechannel ? "yes" : "no");
7bb5fdc2
TS		 2070
2071 switch (cs->mode) {
2072 case M_UNKNOWN:
2073 s = "unknown";
2074 break;
2075 case M_CONFIG:
2076 s = "config";
2077 break;
2078 case M_UNIMODEM:
2079 s = "Unimodem";
2080 break;
2081 case M_CID:
2082 s = "CID";
2083 break;
2084 default:
2085 s = "??";
2086 }
9a58a80a 2087 seq_printf(m, "%-16s %s\n", "mode", s);
7bb5fdc2
TS		 2088
2089 switch (cs->mstate) {
2090 case MS_UNINITIALIZED:
2091 s = "uninitialized";
2092 break;
2093 case MS_INIT:
2094 s = "init";
2095 break;
2096 case MS_LOCKED:
2097 s = "locked";
2098 break;
2099 case MS_SHUTDOWN:
2100 s = "shutdown";
2101 break;
2102 case MS_RECOVER:
2103 s = "recover";
2104 break;
2105 case MS_READY:
2106 s = "ready";
2107 break;
2108 default:
2109 s = "??";
2110 }
9a58a80a 2111 seq_printf(m, "%-16s %s\n", "mstate", s);
7bb5fdc2 2112
9a58a80a
AD		 2113 seq_printf(m, "%-16s %s\n", "running", cs->running ? "yes" : "no");
2114 seq_printf(m, "%-16s %s\n", "connected", cs->connected ? "yes" : "no");
2115 seq_printf(m, "%-16s %s\n", "isdn_up", cs->isdn_up ? "yes" : "no");
2116 seq_printf(m, "%-16s %s\n", "cidmode", cs->cidmode ? "yes" : "no");
7bb5fdc2
TS		 2117
2118 for (i = 0; i < cs->channels; i++) {
9a58a80a 2119 seq_printf(m, "[%d]%-13s %d\n", i, "corrupted",
7bb5fdc2 2120 cs->bcs[i].corrupted);
9a58a80a 2121 seq_printf(m, "[%d]%-13s %d\n", i, "trans_down",
7bb5fdc2 2122 cs->bcs[i].trans_down);
9a58a80a 2123 seq_printf(m, "[%d]%-13s %d\n", i, "trans_up",
7bb5fdc2 2124 cs->bcs[i].trans_up);
9a58a80a 2125 seq_printf(m, "[%d]%-13s %d\n", i, "chstate",
7bb5fdc2
TS		 2126 cs->bcs[i].chstate);
2127 switch (cs->bcs[i].proto2) {
2128 case L2_BITSYNC:
2129 s = "bitsync";
2130 break;
2131 case L2_HDLC:
2132 s = "HDLC";
2133 break;
2134 case L2_VOICE:
2135 s = "voice";
2136 break;
2137 default:
2138 s = "??";
2139 }
9a58a80a 2140 seq_printf(m, "[%d]%-13s %s\n", i, "proto2", s);
7bb5fdc2 2141 }
9a58a80a 2142 return 0;
7bb5fdc2
TS		 2143}
2144
9a58a80a
AD		 2145static int gigaset_proc_open(struct inode *inode, struct file *file)
2146{
2147 return single_open(file, gigaset_proc_show, PDE(inode)->data);
2148}
2149
2150static const struct file_operations gigaset_proc_fops = {
2151 .owner = THIS_MODULE,
2152 .open = gigaset_proc_open,
2153 .read = seq_read,
2154 .llseek = seq_lseek,
2155 .release = single_release,
2156};
7bb5fdc2 2157
7bb5fdc2 2158/**
bc35b4e3 2159 * gigaset_isdn_regdev() - register device to LL
7bb5fdc2
TS		 2160 * @cs: device descriptor structure.
2161 * @isdnid: device name.
2162 *
7bb5fdc2
TS		 2163 * Return value: 1 for success, 0 for failure
2164 */
bc35b4e3 2165int gigaset_isdn_regdev(struct cardstate *cs, const char *isdnid)
7bb5fdc2
TS		 2166{
2167 struct gigaset_capi_ctr *iif;
2168 int rc;
2169
7bb5fdc2
TS		 2170 iif = kmalloc(sizeof(*iif), GFP_KERNEL);
2171 if (!iif) {
2172 pr_err("%s: out of memory\n", __func__);
2173 return 0;
2174 }
2175
7bb5fdc2
TS		 2176 /* prepare controller structure */
2177 iif->ctr.owner = THIS_MODULE;
2178 iif->ctr.driverdata = cs;
2179 strncpy(iif->ctr.name, isdnid, sizeof(iif->ctr.name));
2180 iif->ctr.driver_name = "gigaset";
e487639d
TS		 2181 iif->ctr.load_firmware = NULL;
2182 iif->ctr.reset_ctr = NULL;
7bb5fdc2
TS		 2183 iif->ctr.register_appl = gigaset_register_appl;
2184 iif->ctr.release_appl = gigaset_release_appl;
2185 iif->ctr.send_message = gigaset_send_message;
2186 iif->ctr.procinfo = gigaset_procinfo;
9a58a80a 2187 iif->ctr.proc_fops = &gigaset_proc_fops;
7bb5fdc2
TS		 2188 INIT_LIST_HEAD(&iif->appls);
2189 skb_queue_head_init(&iif->sendqueue);
2190 atomic_set(&iif->sendqlen, 0);
2191
2192 /* register controller with CAPI */
2193 rc = attach_capi_ctr(&iif->ctr);
2194 if (rc) {
2195 pr_err("attach_capi_ctr failed (%d)\n", rc);
7bb5fdc2
TS		 2196 kfree(iif);
2197 return 0;
2198 }
2199
2200 cs->iif = iif;
2201 cs->hw_hdr_len = CAPI_DATA_B3_REQ_LEN;
2202 return 1;
2203}
2204
2205/**
bc35b4e3 2206 * gigaset_isdn_unregdev() - unregister device from LL
7bb5fdc2 2207 * @cs: device descriptor structure.
7bb5fdc2 2208 */
bc35b4e3 2209void gigaset_isdn_unregdev(struct cardstate *cs)
7bb5fdc2
TS		 2210{
2211 struct gigaset_capi_ctr *iif = cs->iif;
2212
2213 detach_capi_ctr(&iif->ctr);
2214 kfree(iif);
2215 cs->iif = NULL;
bc35b4e3
TS		 2216}
2217
2218static struct capi_driver capi_driver_gigaset = {
2219 .name = "gigaset",
2220 .revision = "1.0",
2221};
2222
2223/**
2224 * gigaset_isdn_regdrv() - register driver to LL
2225 */
2226void gigaset_isdn_regdrv(void)
2227{
2228 pr_info("Kernel CAPI interface\n");
2229 register_capi_driver(&capi_driver_gigaset);
2230}
2231
2232/**
2233 * gigaset_isdn_unregdrv() - unregister driver from LL
2234 */
2235void gigaset_isdn_unregdrv(void)
2236{
7bb5fdc2
TS		 2237 unregister_capi_driver(&capi_driver_gigaset);
2238}
kernel source for telekom puls (alcatel/mediatek)