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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 */ | |
79 | struct gigaset_capi_appl { | |
80 | struct list_head ctrlist; | |
81 | struct gigaset_capi_appl *bcnext; | |
82 | u16 id; | |
e7752ee2 | 83 | struct capi_register_params rp; |
7bb5fdc2 TS |
84 | u16 nextMessageNumber; |
85 | u32 listenInfoMask; | |
86 | u32 listenCIPmask; | |
87 | int connected; | |
88 | }; | |
89 | ||
90 | /* CAPI specific controller data structure */ | |
91 | struct gigaset_capi_ctr { | |
92 | struct capi_ctr ctr; | |
93 | struct list_head appls; | |
94 | struct sk_buff_head sendqueue; | |
95 | atomic_t sendqlen; | |
96 | /* two _cmsg structures possibly used concurrently: */ | |
97 | _cmsg hcmsg; /* for message composition triggered from hardware */ | |
98 | _cmsg acmsg; /* for dissection of messages sent from application */ | |
99 | u8 bc_buf[MAX_BC_OCTETS+1]; | |
100 | u8 hlc_buf[MAX_HLC_OCTETS+1]; | |
101 | u8 cgpty_buf[MAX_NUMBER_DIGITS+3]; | |
102 | u8 cdpty_buf[MAX_NUMBER_DIGITS+2]; | |
103 | }; | |
104 | ||
105 | /* CIP Value table (from CAPI 2.0 standard, ch. 6.1) */ | |
106 | static struct { | |
107 | u8 *bc; | |
108 | u8 *hlc; | |
109 | } cip2bchlc[] = { | |
110 | [1] = { "8090A3", NULL }, | |
111 | /* Speech (A-law) */ | |
112 | [2] = { "8890", NULL }, | |
113 | /* Unrestricted digital information */ | |
114 | [3] = { "8990", NULL }, | |
115 | /* Restricted digital information */ | |
116 | [4] = { "9090A3", NULL }, | |
117 | /* 3,1 kHz audio (A-law) */ | |
118 | [5] = { "9190", NULL }, | |
119 | /* 7 kHz audio */ | |
120 | [6] = { "9890", NULL }, | |
121 | /* Video */ | |
122 | [7] = { "88C0C6E6", NULL }, | |
123 | /* Packet mode */ | |
124 | [8] = { "8890218F", NULL }, | |
125 | /* 56 kbit/s rate adaptation */ | |
126 | [9] = { "9190A5", NULL }, | |
127 | /* Unrestricted digital information with tones/announcements */ | |
128 | [16] = { "8090A3", "9181" }, | |
129 | /* Telephony */ | |
130 | [17] = { "9090A3", "9184" }, | |
131 | /* Group 2/3 facsimile */ | |
132 | [18] = { "8890", "91A1" }, | |
133 | /* Group 4 facsimile Class 1 */ | |
134 | [19] = { "8890", "91A4" }, | |
135 | /* Teletex service basic and mixed mode | |
136 | and Group 4 facsimile service Classes II and III */ | |
137 | [20] = { "8890", "91A8" }, | |
138 | /* Teletex service basic and processable mode */ | |
139 | [21] = { "8890", "91B1" }, | |
140 | /* Teletex service basic mode */ | |
141 | [22] = { "8890", "91B2" }, | |
142 | /* International interworking for Videotex */ | |
143 | [23] = { "8890", "91B5" }, | |
144 | /* Telex */ | |
145 | [24] = { "8890", "91B8" }, | |
146 | /* Message Handling Systems in accordance with X.400 */ | |
147 | [25] = { "8890", "91C1" }, | |
148 | /* OSI application in accordance with X.200 */ | |
149 | [26] = { "9190A5", "9181" }, | |
150 | /* 7 kHz telephony */ | |
151 | [27] = { "9190A5", "916001" }, | |
152 | /* Video telephony, first connection */ | |
153 | [28] = { "8890", "916002" }, | |
154 | /* Video telephony, second connection */ | |
155 | }; | |
156 | ||
157 | /* | |
158 | * helper functions | |
159 | * ================ | |
160 | */ | |
161 | ||
162 | /* | |
163 | * emit unsupported parameter warning | |
164 | */ | |
165 | static inline void ignore_cstruct_param(struct cardstate *cs, _cstruct param, | |
166 | char *msgname, char *paramname) | |
167 | { | |
168 | if (param && *param) | |
169 | dev_warn(cs->dev, "%s: ignoring unsupported parameter: %s\n", | |
170 | msgname, paramname); | |
171 | } | |
172 | ||
7bb5fdc2 TS |
173 | /* |
174 | * convert an IE from Gigaset hex string to ETSI binary representation | |
175 | * including length byte | |
176 | * return value: result length, -1 on error | |
177 | */ | |
178 | static int encode_ie(char *in, u8 *out, int maxlen) | |
179 | { | |
180 | int l = 0; | |
181 | while (*in) { | |
003bdb27 | 182 | if (!isxdigit(in[0]) || !isxdigit(in[1]) || l >= maxlen) |
7bb5fdc2 | 183 | return -1; |
0496b55c | 184 | out[++l] = (hex_to_bin(in[0]) << 4) + hex_to_bin(in[1]); |
7bb5fdc2 TS |
185 | in += 2; |
186 | } | |
187 | out[0] = l; | |
188 | return l; | |
189 | } | |
190 | ||
191 | /* | |
192 | * convert an IE from ETSI binary representation including length byte | |
193 | * to Gigaset hex string | |
194 | */ | |
195 | static void decode_ie(u8 *in, char *out) | |
196 | { | |
197 | int i = *in; | |
198 | while (i-- > 0) { | |
199 | /* ToDo: conversion to upper case necessary? */ | |
200 | *out++ = toupper(hex_asc_hi(*++in)); | |
201 | *out++ = toupper(hex_asc_lo(*in)); | |
202 | } | |
203 | } | |
204 | ||
205 | /* | |
206 | * retrieve application data structure for an application ID | |
207 | */ | |
208 | static inline struct gigaset_capi_appl * | |
209 | get_appl(struct gigaset_capi_ctr *iif, u16 appl) | |
210 | { | |
211 | struct gigaset_capi_appl *ap; | |
212 | ||
213 | list_for_each_entry(ap, &iif->appls, ctrlist) | |
214 | if (ap->id == appl) | |
215 | return ap; | |
216 | return NULL; | |
217 | } | |
218 | ||
219 | /* | |
220 | * dump CAPI message to kernel messages for debugging | |
221 | */ | |
222 | static inline void dump_cmsg(enum debuglevel level, const char *tag, _cmsg *p) | |
223 | { | |
224 | #ifdef CONFIG_GIGASET_DEBUG | |
225 | _cdebbuf *cdb; | |
226 | ||
227 | if (!(gigaset_debuglevel & level)) | |
228 | return; | |
229 | ||
230 | cdb = capi_cmsg2str(p); | |
231 | if (cdb) { | |
232 | gig_dbg(level, "%s: [%d] %s", tag, p->ApplId, cdb->buf); | |
233 | cdebbuf_free(cdb); | |
234 | } else { | |
235 | gig_dbg(level, "%s: [%d] %s", tag, p->ApplId, | |
236 | capi_cmd2str(p->Command, p->Subcommand)); | |
237 | } | |
238 | #endif | |
239 | } | |
240 | ||
241 | static inline void dump_rawmsg(enum debuglevel level, const char *tag, | |
242 | unsigned char *data) | |
243 | { | |
244 | #ifdef CONFIG_GIGASET_DEBUG | |
245 | char *dbgline; | |
246 | int i, l; | |
247 | ||
248 | if (!(gigaset_debuglevel & level)) | |
249 | return; | |
250 | ||
251 | l = CAPIMSG_LEN(data); | |
252 | if (l < 12) { | |
253 | gig_dbg(level, "%s: ??? LEN=%04d", tag, l); | |
254 | return; | |
255 | } | |
256 | gig_dbg(level, "%s: 0x%02x:0x%02x: ID=%03d #0x%04x LEN=%04d NCCI=0x%x", | |
257 | tag, CAPIMSG_COMMAND(data), CAPIMSG_SUBCOMMAND(data), | |
258 | CAPIMSG_APPID(data), CAPIMSG_MSGID(data), l, | |
259 | CAPIMSG_CONTROL(data)); | |
260 | l -= 12; | |
261 | dbgline = kmalloc(3*l, GFP_ATOMIC); | |
262 | if (!dbgline) | |
263 | return; | |
264 | for (i = 0; i < l; i++) { | |
265 | dbgline[3*i] = hex_asc_hi(data[12+i]); | |
266 | dbgline[3*i+1] = hex_asc_lo(data[12+i]); | |
267 | dbgline[3*i+2] = ' '; | |
268 | } | |
269 | dbgline[3*l-1] = '\0'; | |
270 | gig_dbg(level, " %s", dbgline); | |
271 | kfree(dbgline); | |
272 | if (CAPIMSG_COMMAND(data) == CAPI_DATA_B3 && | |
273 | (CAPIMSG_SUBCOMMAND(data) == CAPI_REQ || | |
274 | CAPIMSG_SUBCOMMAND(data) == CAPI_IND) && | |
275 | CAPIMSG_DATALEN(data) > 0) { | |
276 | l = CAPIMSG_DATALEN(data); | |
277 | dbgline = kmalloc(3*l, GFP_ATOMIC); | |
278 | if (!dbgline) | |
279 | return; | |
280 | data += CAPIMSG_LEN(data); | |
281 | for (i = 0; i < l; i++) { | |
282 | dbgline[3*i] = hex_asc_hi(data[i]); | |
283 | dbgline[3*i+1] = hex_asc_lo(data[i]); | |
284 | dbgline[3*i+2] = ' '; | |
285 | } | |
286 | dbgline[3*l-1] = '\0'; | |
287 | gig_dbg(level, " %s", dbgline); | |
288 | kfree(dbgline); | |
289 | } | |
290 | #endif | |
291 | } | |
292 | ||
293 | /* | |
294 | * format CAPI IE as string | |
295 | */ | |
296 | ||
297 | static const char *format_ie(const char *ie) | |
298 | { | |
299 | static char result[3*MAX_FMT_IE_LEN]; | |
300 | int len, count; | |
301 | char *pout = result; | |
302 | ||
303 | if (!ie) | |
304 | return "NULL"; | |
305 | ||
306 | count = len = ie[0]; | |
307 | if (count > MAX_FMT_IE_LEN) | |
308 | count = MAX_FMT_IE_LEN-1; | |
309 | while (count--) { | |
310 | *pout++ = hex_asc_hi(*++ie); | |
311 | *pout++ = hex_asc_lo(*ie); | |
312 | *pout++ = ' '; | |
313 | } | |
314 | if (len > MAX_FMT_IE_LEN) { | |
315 | *pout++ = '.'; | |
316 | *pout++ = '.'; | |
317 | *pout++ = '.'; | |
318 | } | |
319 | *--pout = 0; | |
320 | return result; | |
321 | } | |
322 | ||
23b36778 TS |
323 | /* |
324 | * emit DATA_B3_CONF message | |
325 | */ | |
326 | static void send_data_b3_conf(struct cardstate *cs, struct capi_ctr *ctr, | |
327 | u16 appl, u16 msgid, int channel, | |
328 | u16 handle, u16 info) | |
329 | { | |
330 | struct sk_buff *cskb; | |
331 | u8 *msg; | |
332 | ||
333 | cskb = alloc_skb(CAPI_DATA_B3_CONF_LEN, GFP_ATOMIC); | |
334 | if (!cskb) { | |
335 | dev_err(cs->dev, "%s: out of memory\n", __func__); | |
336 | return; | |
337 | } | |
338 | /* frequent message, avoid _cmsg overhead */ | |
339 | msg = __skb_put(cskb, CAPI_DATA_B3_CONF_LEN); | |
340 | CAPIMSG_SETLEN(msg, CAPI_DATA_B3_CONF_LEN); | |
341 | CAPIMSG_SETAPPID(msg, appl); | |
342 | CAPIMSG_SETCOMMAND(msg, CAPI_DATA_B3); | |
343 | CAPIMSG_SETSUBCOMMAND(msg, CAPI_CONF); | |
344 | CAPIMSG_SETMSGID(msg, msgid); | |
345 | CAPIMSG_SETCONTROLLER(msg, ctr->cnr); | |
346 | CAPIMSG_SETPLCI_PART(msg, channel); | |
347 | CAPIMSG_SETNCCI_PART(msg, 1); | |
348 | CAPIMSG_SETHANDLE_CONF(msg, handle); | |
349 | CAPIMSG_SETINFO_CONF(msg, info); | |
350 | ||
351 | /* emit message */ | |
352 | dump_rawmsg(DEBUG_MCMD, __func__, msg); | |
353 | capi_ctr_handle_message(ctr, appl, cskb); | |
354 | } | |
355 | ||
7bb5fdc2 TS |
356 | |
357 | /* | |
358 | * driver interface functions | |
359 | * ========================== | |
360 | */ | |
361 | ||
362 | /** | |
363 | * gigaset_skb_sent() - acknowledge transmission of outgoing skb | |
364 | * @bcs: B channel descriptor structure. | |
365 | * @skb: sent data. | |
366 | * | |
367 | * Called by hardware module {bas,ser,usb}_gigaset when the data in a | |
368 | * skb has been successfully sent, for signalling completion to the LL. | |
369 | */ | |
370 | void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *dskb) | |
371 | { | |
372 | struct cardstate *cs = bcs->cs; | |
373 | struct gigaset_capi_ctr *iif = cs->iif; | |
374 | struct gigaset_capi_appl *ap = bcs->ap; | |
4dd8230a | 375 | unsigned char *req = skb_mac_header(dskb); |
7bb5fdc2 TS |
376 | u16 flags; |
377 | ||
378 | /* update statistics */ | |
379 | ++bcs->trans_up; | |
380 | ||
381 | if (!ap) { | |
382 | dev_err(cs->dev, "%s: no application\n", __func__); | |
383 | return; | |
384 | } | |
385 | ||
386 | /* don't send further B3 messages if disconnected */ | |
387 | if (ap->connected < APCONN_ACTIVE) { | |
388 | gig_dbg(DEBUG_LLDATA, "disconnected, discarding ack"); | |
389 | return; | |
390 | } | |
391 | ||
23b36778 TS |
392 | /* |
393 | * send DATA_B3_CONF if "delivery confirmation" bit was set in request; | |
394 | * otherwise it has already been sent by do_data_b3_req() | |
395 | */ | |
4dd8230a | 396 | flags = CAPIMSG_FLAGS(req); |
23b36778 TS |
397 | if (flags & CAPI_FLAGS_DELIVERY_CONFIRMATION) |
398 | send_data_b3_conf(cs, &iif->ctr, ap->id, CAPIMSG_MSGID(req), | |
399 | bcs->channel + 1, CAPIMSG_HANDLE_REQ(req), | |
400 | (flags & ~CAPI_FLAGS_DELIVERY_CONFIRMATION) ? | |
401 | CapiFlagsNotSupportedByProtocol : | |
402 | CAPI_NOERROR); | |
7bb5fdc2 TS |
403 | } |
404 | EXPORT_SYMBOL_GPL(gigaset_skb_sent); | |
405 | ||
406 | /** | |
407 | * gigaset_skb_rcvd() - pass received skb to LL | |
408 | * @bcs: B channel descriptor structure. | |
409 | * @skb: received data. | |
410 | * | |
411 | * Called by hardware module {bas,ser,usb}_gigaset when user data has | |
412 | * been successfully received, for passing to the LL. | |
413 | * Warning: skb must not be accessed anymore! | |
414 | */ | |
415 | void gigaset_skb_rcvd(struct bc_state *bcs, struct sk_buff *skb) | |
416 | { | |
417 | struct cardstate *cs = bcs->cs; | |
418 | struct gigaset_capi_ctr *iif = cs->iif; | |
419 | struct gigaset_capi_appl *ap = bcs->ap; | |
420 | int len = skb->len; | |
421 | ||
422 | /* update statistics */ | |
423 | bcs->trans_down++; | |
424 | ||
425 | if (!ap) { | |
426 | dev_err(cs->dev, "%s: no application\n", __func__); | |
427 | return; | |
428 | } | |
429 | ||
430 | /* don't send further B3 messages if disconnected */ | |
431 | if (ap->connected < APCONN_ACTIVE) { | |
432 | gig_dbg(DEBUG_LLDATA, "disconnected, discarding data"); | |
4dd8230a | 433 | dev_kfree_skb_any(skb); |
7bb5fdc2 TS |
434 | return; |
435 | } | |
436 | ||
437 | /* | |
438 | * prepend DATA_B3_IND message to payload | |
439 | * Parameters: NCCI = 1, all others 0/unused | |
440 | * frequent message, avoid _cmsg overhead | |
441 | */ | |
442 | skb_push(skb, CAPI_DATA_B3_REQ_LEN); | |
443 | CAPIMSG_SETLEN(skb->data, CAPI_DATA_B3_REQ_LEN); | |
444 | CAPIMSG_SETAPPID(skb->data, ap->id); | |
445 | CAPIMSG_SETCOMMAND(skb->data, CAPI_DATA_B3); | |
446 | CAPIMSG_SETSUBCOMMAND(skb->data, CAPI_IND); | |
447 | CAPIMSG_SETMSGID(skb->data, ap->nextMessageNumber++); | |
448 | CAPIMSG_SETCONTROLLER(skb->data, iif->ctr.cnr); | |
449 | CAPIMSG_SETPLCI_PART(skb->data, bcs->channel + 1); | |
450 | CAPIMSG_SETNCCI_PART(skb->data, 1); | |
451 | /* Data parameter not used */ | |
452 | CAPIMSG_SETDATALEN(skb->data, len); | |
453 | /* Data handle parameter not used */ | |
454 | CAPIMSG_SETFLAGS(skb->data, 0); | |
455 | /* Data64 parameter not present */ | |
456 | ||
457 | /* emit message */ | |
458 | dump_rawmsg(DEBUG_LLDATA, "DATA_B3_IND", skb->data); | |
459 | capi_ctr_handle_message(&iif->ctr, ap->id, skb); | |
460 | } | |
461 | EXPORT_SYMBOL_GPL(gigaset_skb_rcvd); | |
462 | ||
463 | /** | |
464 | * gigaset_isdn_rcv_err() - signal receive error | |
465 | * @bcs: B channel descriptor structure. | |
466 | * | |
467 | * Called by hardware module {bas,ser,usb}_gigaset when a receive error | |
468 | * has occurred, for signalling to the LL. | |
469 | */ | |
470 | void gigaset_isdn_rcv_err(struct bc_state *bcs) | |
471 | { | |
472 | /* if currently ignoring packets, just count down */ | |
473 | if (bcs->ignore) { | |
474 | bcs->ignore--; | |
475 | return; | |
476 | } | |
477 | ||
478 | /* update statistics */ | |
479 | bcs->corrupted++; | |
480 | ||
481 | /* ToDo: signal error -> LL */ | |
482 | } | |
483 | EXPORT_SYMBOL_GPL(gigaset_isdn_rcv_err); | |
484 | ||
485 | /** | |
486 | * gigaset_isdn_icall() - signal incoming call | |
487 | * @at_state: connection state structure. | |
488 | * | |
489 | * Called by main module at tasklet level to notify the LL that an incoming | |
490 | * call has been received. @at_state contains the parameters of the call. | |
491 | * | |
492 | * Return value: call disposition (ICALL_*) | |
493 | */ | |
494 | int gigaset_isdn_icall(struct at_state_t *at_state) | |
495 | { | |
496 | struct cardstate *cs = at_state->cs; | |
497 | struct bc_state *bcs = at_state->bcs; | |
498 | struct gigaset_capi_ctr *iif = cs->iif; | |
499 | struct gigaset_capi_appl *ap; | |
500 | u32 actCIPmask; | |
501 | struct sk_buff *skb; | |
502 | unsigned int msgsize; | |
503 | int i; | |
504 | ||
505 | /* | |
506 | * ToDo: signal calls without a free B channel, too | |
507 | * (requires a u8 handle for the at_state structure that can | |
508 | * be stored in the PLCI and used in the CONNECT_RESP message | |
509 | * handler to retrieve it) | |
510 | */ | |
511 | if (!bcs) | |
512 | return ICALL_IGNORE; | |
513 | ||
514 | /* prepare CONNECT_IND message, using B channel number as PLCI */ | |
515 | capi_cmsg_header(&iif->hcmsg, 0, CAPI_CONNECT, CAPI_IND, 0, | |
516 | iif->ctr.cnr | ((bcs->channel + 1) << 8)); | |
517 | ||
518 | /* minimum size, all structs empty */ | |
519 | msgsize = CAPI_CONNECT_IND_BASELEN; | |
520 | ||
521 | /* Bearer Capability (mandatory) */ | |
522 | if (at_state->str_var[STR_ZBC]) { | |
523 | /* pass on BC from Gigaset */ | |
524 | if (encode_ie(at_state->str_var[STR_ZBC], iif->bc_buf, | |
525 | MAX_BC_OCTETS) < 0) { | |
526 | dev_warn(cs->dev, "RING ignored - bad BC %s\n", | |
527 | at_state->str_var[STR_ZBC]); | |
528 | return ICALL_IGNORE; | |
529 | } | |
530 | ||
531 | /* look up corresponding CIP value */ | |
532 | iif->hcmsg.CIPValue = 0; /* default if nothing found */ | |
533 | for (i = 0; i < ARRAY_SIZE(cip2bchlc); i++) | |
534 | if (cip2bchlc[i].bc != NULL && | |
535 | cip2bchlc[i].hlc == NULL && | |
536 | !strcmp(cip2bchlc[i].bc, | |
537 | at_state->str_var[STR_ZBC])) { | |
538 | iif->hcmsg.CIPValue = i; | |
539 | break; | |
540 | } | |
541 | } else { | |
542 | /* no BC (internal call): assume CIP 1 (speech, A-law) */ | |
543 | iif->hcmsg.CIPValue = 1; | |
544 | encode_ie(cip2bchlc[1].bc, iif->bc_buf, MAX_BC_OCTETS); | |
545 | } | |
546 | iif->hcmsg.BC = iif->bc_buf; | |
547 | msgsize += iif->hcmsg.BC[0]; | |
548 | ||
549 | /* High Layer Compatibility (optional) */ | |
550 | if (at_state->str_var[STR_ZHLC]) { | |
551 | /* pass on HLC from Gigaset */ | |
552 | if (encode_ie(at_state->str_var[STR_ZHLC], iif->hlc_buf, | |
553 | MAX_HLC_OCTETS) < 0) { | |
554 | dev_warn(cs->dev, "RING ignored - bad HLC %s\n", | |
555 | at_state->str_var[STR_ZHLC]); | |
556 | return ICALL_IGNORE; | |
557 | } | |
558 | iif->hcmsg.HLC = iif->hlc_buf; | |
559 | msgsize += iif->hcmsg.HLC[0]; | |
560 | ||
561 | /* look up corresponding CIP value */ | |
562 | /* keep BC based CIP value if none found */ | |
563 | if (at_state->str_var[STR_ZBC]) | |
564 | for (i = 0; i < ARRAY_SIZE(cip2bchlc); i++) | |
565 | if (cip2bchlc[i].hlc != NULL && | |
566 | !strcmp(cip2bchlc[i].hlc, | |
567 | at_state->str_var[STR_ZHLC]) && | |
568 | !strcmp(cip2bchlc[i].bc, | |
569 | at_state->str_var[STR_ZBC])) { | |
570 | iif->hcmsg.CIPValue = i; | |
571 | break; | |
572 | } | |
573 | } | |
574 | ||
575 | /* Called Party Number (optional) */ | |
576 | if (at_state->str_var[STR_ZCPN]) { | |
577 | i = strlen(at_state->str_var[STR_ZCPN]); | |
578 | if (i > MAX_NUMBER_DIGITS) { | |
579 | dev_warn(cs->dev, "RING ignored - bad number %s\n", | |
580 | at_state->str_var[STR_ZBC]); | |
581 | return ICALL_IGNORE; | |
582 | } | |
583 | iif->cdpty_buf[0] = i + 1; | |
584 | iif->cdpty_buf[1] = 0x80; /* type / numbering plan unknown */ | |
585 | memcpy(iif->cdpty_buf+2, at_state->str_var[STR_ZCPN], i); | |
586 | iif->hcmsg.CalledPartyNumber = iif->cdpty_buf; | |
587 | msgsize += iif->hcmsg.CalledPartyNumber[0]; | |
588 | } | |
589 | ||
590 | /* Calling Party Number (optional) */ | |
591 | if (at_state->str_var[STR_NMBR]) { | |
592 | i = strlen(at_state->str_var[STR_NMBR]); | |
593 | if (i > MAX_NUMBER_DIGITS) { | |
594 | dev_warn(cs->dev, "RING ignored - bad number %s\n", | |
595 | at_state->str_var[STR_ZBC]); | |
596 | return ICALL_IGNORE; | |
597 | } | |
598 | iif->cgpty_buf[0] = i + 2; | |
599 | iif->cgpty_buf[1] = 0x00; /* type / numbering plan unknown */ | |
600 | iif->cgpty_buf[2] = 0x80; /* pres. allowed, not screened */ | |
601 | memcpy(iif->cgpty_buf+3, at_state->str_var[STR_NMBR], i); | |
602 | iif->hcmsg.CallingPartyNumber = iif->cgpty_buf; | |
603 | msgsize += iif->hcmsg.CallingPartyNumber[0]; | |
604 | } | |
605 | ||
606 | /* remaining parameters (not supported, always left NULL): | |
607 | * - CalledPartySubaddress | |
608 | * - CallingPartySubaddress | |
609 | * - AdditionalInfo | |
610 | * - BChannelinformation | |
611 | * - Keypadfacility | |
612 | * - Useruserdata | |
613 | * - Facilitydataarray | |
614 | */ | |
615 | ||
616 | gig_dbg(DEBUG_CMD, "icall: PLCI %x CIP %d BC %s", | |
617 | iif->hcmsg.adr.adrPLCI, iif->hcmsg.CIPValue, | |
618 | format_ie(iif->hcmsg.BC)); | |
619 | gig_dbg(DEBUG_CMD, "icall: HLC %s", | |
620 | format_ie(iif->hcmsg.HLC)); | |
621 | gig_dbg(DEBUG_CMD, "icall: CgPty %s", | |
622 | format_ie(iif->hcmsg.CallingPartyNumber)); | |
623 | gig_dbg(DEBUG_CMD, "icall: CdPty %s", | |
624 | format_ie(iif->hcmsg.CalledPartyNumber)); | |
625 | ||
626 | /* scan application list for matching listeners */ | |
627 | bcs->ap = NULL; | |
628 | actCIPmask = 1 | (1 << iif->hcmsg.CIPValue); | |
629 | list_for_each_entry(ap, &iif->appls, ctrlist) | |
630 | if (actCIPmask & ap->listenCIPmask) { | |
631 | /* build CONNECT_IND message for this application */ | |
632 | iif->hcmsg.ApplId = ap->id; | |
633 | iif->hcmsg.Messagenumber = ap->nextMessageNumber++; | |
634 | ||
635 | skb = alloc_skb(msgsize, GFP_ATOMIC); | |
636 | if (!skb) { | |
637 | dev_err(cs->dev, "%s: out of memory\n", | |
638 | __func__); | |
639 | break; | |
640 | } | |
641 | capi_cmsg2message(&iif->hcmsg, __skb_put(skb, msgsize)); | |
642 | dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg); | |
643 | ||
644 | /* add to listeners on this B channel, update state */ | |
645 | ap->bcnext = bcs->ap; | |
646 | bcs->ap = ap; | |
647 | bcs->chstate |= CHS_NOTIFY_LL; | |
648 | ap->connected = APCONN_SETUP; | |
649 | ||
650 | /* emit message */ | |
651 | capi_ctr_handle_message(&iif->ctr, ap->id, skb); | |
652 | } | |
653 | ||
654 | /* | |
655 | * Return "accept" if any listeners. | |
656 | * Gigaset will send ALERTING. | |
657 | * There doesn't seem to be a way to avoid this. | |
658 | */ | |
659 | return bcs->ap ? ICALL_ACCEPT : ICALL_IGNORE; | |
660 | } | |
661 | ||
662 | /* | |
663 | * send a DISCONNECT_IND message to an application | |
664 | * does not sleep, clobbers the controller's hcmsg structure | |
665 | */ | |
666 | static void send_disconnect_ind(struct bc_state *bcs, | |
667 | struct gigaset_capi_appl *ap, u16 reason) | |
668 | { | |
669 | struct cardstate *cs = bcs->cs; | |
670 | struct gigaset_capi_ctr *iif = cs->iif; | |
671 | struct sk_buff *skb; | |
672 | ||
673 | if (ap->connected == APCONN_NONE) | |
674 | return; | |
675 | ||
676 | capi_cmsg_header(&iif->hcmsg, ap->id, CAPI_DISCONNECT, CAPI_IND, | |
677 | ap->nextMessageNumber++, | |
678 | iif->ctr.cnr | ((bcs->channel + 1) << 8)); | |
679 | iif->hcmsg.Reason = reason; | |
680 | skb = alloc_skb(CAPI_DISCONNECT_IND_LEN, GFP_ATOMIC); | |
681 | if (!skb) { | |
682 | dev_err(cs->dev, "%s: out of memory\n", __func__); | |
683 | return; | |
684 | } | |
685 | capi_cmsg2message(&iif->hcmsg, __skb_put(skb, CAPI_DISCONNECT_IND_LEN)); | |
686 | dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg); | |
687 | ap->connected = APCONN_NONE; | |
688 | capi_ctr_handle_message(&iif->ctr, ap->id, skb); | |
689 | } | |
690 | ||
691 | /* | |
692 | * send a DISCONNECT_B3_IND message to an application | |
693 | * Parameters: NCCI = 1, NCPI empty, Reason_B3 = 0 | |
694 | * does not sleep, clobbers the controller's hcmsg structure | |
695 | */ | |
696 | static void send_disconnect_b3_ind(struct bc_state *bcs, | |
697 | struct gigaset_capi_appl *ap) | |
698 | { | |
699 | struct cardstate *cs = bcs->cs; | |
700 | struct gigaset_capi_ctr *iif = cs->iif; | |
701 | struct sk_buff *skb; | |
702 | ||
703 | /* nothing to do if no logical connection active */ | |
704 | if (ap->connected < APCONN_ACTIVE) | |
705 | return; | |
706 | ap->connected = APCONN_SETUP; | |
707 | ||
708 | capi_cmsg_header(&iif->hcmsg, ap->id, CAPI_DISCONNECT_B3, CAPI_IND, | |
709 | ap->nextMessageNumber++, | |
710 | iif->ctr.cnr | ((bcs->channel + 1) << 8) | (1 << 16)); | |
711 | skb = alloc_skb(CAPI_DISCONNECT_B3_IND_BASELEN, GFP_ATOMIC); | |
712 | if (!skb) { | |
713 | dev_err(cs->dev, "%s: out of memory\n", __func__); | |
714 | return; | |
715 | } | |
716 | capi_cmsg2message(&iif->hcmsg, | |
717 | __skb_put(skb, CAPI_DISCONNECT_B3_IND_BASELEN)); | |
718 | dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg); | |
719 | capi_ctr_handle_message(&iif->ctr, ap->id, skb); | |
720 | } | |
721 | ||
722 | /** | |
723 | * gigaset_isdn_connD() - signal D channel connect | |
724 | * @bcs: B channel descriptor structure. | |
725 | * | |
726 | * Called by main module at tasklet level to notify the LL that the D channel | |
727 | * connection has been established. | |
728 | */ | |
729 | void gigaset_isdn_connD(struct bc_state *bcs) | |
730 | { | |
731 | struct cardstate *cs = bcs->cs; | |
732 | struct gigaset_capi_ctr *iif = cs->iif; | |
733 | struct gigaset_capi_appl *ap = bcs->ap; | |
734 | struct sk_buff *skb; | |
735 | unsigned int msgsize; | |
736 | ||
737 | if (!ap) { | |
738 | dev_err(cs->dev, "%s: no application\n", __func__); | |
739 | return; | |
740 | } | |
741 | while (ap->bcnext) { | |
742 | /* this should never happen */ | |
743 | dev_warn(cs->dev, "%s: dropping extra application %u\n", | |
744 | __func__, ap->bcnext->id); | |
745 | send_disconnect_ind(bcs, ap->bcnext, | |
746 | CapiCallGivenToOtherApplication); | |
747 | ap->bcnext = ap->bcnext->bcnext; | |
748 | } | |
749 | if (ap->connected == APCONN_NONE) { | |
750 | dev_warn(cs->dev, "%s: application %u not connected\n", | |
751 | __func__, ap->id); | |
752 | return; | |
753 | } | |
754 | ||
755 | /* prepare CONNECT_ACTIVE_IND message | |
756 | * Note: LLC not supported by device | |
757 | */ | |
758 | capi_cmsg_header(&iif->hcmsg, ap->id, CAPI_CONNECT_ACTIVE, CAPI_IND, | |
759 | ap->nextMessageNumber++, | |
760 | iif->ctr.cnr | ((bcs->channel + 1) << 8)); | |
761 | ||
762 | /* minimum size, all structs empty */ | |
763 | msgsize = CAPI_CONNECT_ACTIVE_IND_BASELEN; | |
764 | ||
765 | /* ToDo: set parameter: Connected number | |
766 | * (requires ev-layer state machine extension to collect | |
767 | * ZCON device reply) | |
768 | */ | |
769 | ||
770 | /* build and emit CONNECT_ACTIVE_IND message */ | |
771 | skb = alloc_skb(msgsize, GFP_ATOMIC); | |
772 | if (!skb) { | |
773 | dev_err(cs->dev, "%s: out of memory\n", __func__); | |
774 | return; | |
775 | } | |
776 | capi_cmsg2message(&iif->hcmsg, __skb_put(skb, msgsize)); | |
777 | dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg); | |
778 | capi_ctr_handle_message(&iif->ctr, ap->id, skb); | |
779 | } | |
780 | ||
781 | /** | |
782 | * gigaset_isdn_hupD() - signal D channel hangup | |
783 | * @bcs: B channel descriptor structure. | |
784 | * | |
785 | * Called by main module at tasklet level to notify the LL that the D channel | |
786 | * connection has been shut down. | |
787 | */ | |
788 | void gigaset_isdn_hupD(struct bc_state *bcs) | |
789 | { | |
790 | struct gigaset_capi_appl *ap; | |
791 | ||
792 | /* | |
793 | * ToDo: pass on reason code reported by device | |
794 | * (requires ev-layer state machine extension to collect | |
795 | * ZCAU device reply) | |
796 | */ | |
797 | for (ap = bcs->ap; ap != NULL; ap = ap->bcnext) { | |
798 | send_disconnect_b3_ind(bcs, ap); | |
799 | send_disconnect_ind(bcs, ap, 0); | |
800 | } | |
801 | bcs->ap = NULL; | |
802 | } | |
803 | ||
804 | /** | |
805 | * gigaset_isdn_connB() - signal B channel connect | |
806 | * @bcs: B channel descriptor structure. | |
807 | * | |
808 | * Called by main module at tasklet level to notify the LL that the B channel | |
809 | * connection has been established. | |
810 | */ | |
811 | void gigaset_isdn_connB(struct bc_state *bcs) | |
812 | { | |
813 | struct cardstate *cs = bcs->cs; | |
814 | struct gigaset_capi_ctr *iif = cs->iif; | |
815 | struct gigaset_capi_appl *ap = bcs->ap; | |
816 | struct sk_buff *skb; | |
817 | unsigned int msgsize; | |
818 | u8 command; | |
819 | ||
820 | if (!ap) { | |
821 | dev_err(cs->dev, "%s: no application\n", __func__); | |
822 | return; | |
823 | } | |
824 | while (ap->bcnext) { | |
825 | /* this should never happen */ | |
826 | dev_warn(cs->dev, "%s: dropping extra application %u\n", | |
827 | __func__, ap->bcnext->id); | |
828 | send_disconnect_ind(bcs, ap->bcnext, | |
829 | CapiCallGivenToOtherApplication); | |
830 | ap->bcnext = ap->bcnext->bcnext; | |
831 | } | |
832 | if (!ap->connected) { | |
833 | dev_warn(cs->dev, "%s: application %u not connected\n", | |
834 | __func__, ap->id); | |
835 | return; | |
836 | } | |
837 | ||
838 | /* | |
839 | * emit CONNECT_B3_ACTIVE_IND if we already got CONNECT_B3_REQ; | |
840 | * otherwise we have to emit CONNECT_B3_IND first, and follow up with | |
841 | * CONNECT_B3_ACTIVE_IND in reply to CONNECT_B3_RESP | |
842 | * Parameters in both cases always: NCCI = 1, NCPI empty | |
843 | */ | |
844 | if (ap->connected >= APCONN_ACTIVE) { | |
845 | command = CAPI_CONNECT_B3_ACTIVE; | |
846 | msgsize = CAPI_CONNECT_B3_ACTIVE_IND_BASELEN; | |
847 | } else { | |
848 | command = CAPI_CONNECT_B3; | |
849 | msgsize = CAPI_CONNECT_B3_IND_BASELEN; | |
850 | } | |
851 | capi_cmsg_header(&iif->hcmsg, ap->id, command, CAPI_IND, | |
852 | ap->nextMessageNumber++, | |
853 | iif->ctr.cnr | ((bcs->channel + 1) << 8) | (1 << 16)); | |
854 | skb = alloc_skb(msgsize, GFP_ATOMIC); | |
855 | if (!skb) { | |
856 | dev_err(cs->dev, "%s: out of memory\n", __func__); | |
857 | return; | |
858 | } | |
859 | capi_cmsg2message(&iif->hcmsg, __skb_put(skb, msgsize)); | |
860 | dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg); | |
861 | ap->connected = APCONN_ACTIVE; | |
862 | capi_ctr_handle_message(&iif->ctr, ap->id, skb); | |
863 | } | |
864 | ||
865 | /** | |
866 | * gigaset_isdn_hupB() - signal B channel hangup | |
867 | * @bcs: B channel descriptor structure. | |
868 | * | |
869 | * Called by main module to notify the LL that the B channel connection has | |
870 | * been shut down. | |
871 | */ | |
872 | void gigaset_isdn_hupB(struct bc_state *bcs) | |
873 | { | |
874 | struct cardstate *cs = bcs->cs; | |
875 | struct gigaset_capi_appl *ap = bcs->ap; | |
876 | ||
877 | /* ToDo: assure order of DISCONNECT_B3_IND and DISCONNECT_IND ? */ | |
878 | ||
879 | if (!ap) { | |
880 | dev_err(cs->dev, "%s: no application\n", __func__); | |
881 | return; | |
882 | } | |
883 | ||
884 | send_disconnect_b3_ind(bcs, ap); | |
885 | } | |
886 | ||
887 | /** | |
888 | * gigaset_isdn_start() - signal device availability | |
889 | * @cs: device descriptor structure. | |
890 | * | |
891 | * Called by main module to notify the LL that the device is available for | |
892 | * use. | |
893 | */ | |
894 | void gigaset_isdn_start(struct cardstate *cs) | |
895 | { | |
896 | struct gigaset_capi_ctr *iif = cs->iif; | |
897 | ||
898 | /* fill profile data: manufacturer name */ | |
899 | strcpy(iif->ctr.manu, "Siemens"); | |
900 | /* CAPI and device version */ | |
901 | iif->ctr.version.majorversion = 2; /* CAPI 2.0 */ | |
902 | iif->ctr.version.minorversion = 0; | |
903 | /* ToDo: check/assert cs->gotfwver? */ | |
904 | iif->ctr.version.majormanuversion = cs->fwver[0]; | |
905 | iif->ctr.version.minormanuversion = cs->fwver[1]; | |
906 | /* number of B channels supported */ | |
907 | iif->ctr.profile.nbchannel = cs->channels; | |
908 | /* global options: internal controller, supplementary services */ | |
909 | iif->ctr.profile.goptions = 0x11; | |
910 | /* B1 protocols: 64 kbit/s HDLC or transparent */ | |
911 | iif->ctr.profile.support1 = 0x03; | |
912 | /* B2 protocols: transparent only */ | |
913 | /* ToDo: X.75 SLP ? */ | |
914 | iif->ctr.profile.support2 = 0x02; | |
915 | /* B3 protocols: transparent only */ | |
916 | iif->ctr.profile.support3 = 0x01; | |
917 | /* no serial number */ | |
918 | strcpy(iif->ctr.serial, "0"); | |
919 | capi_ctr_ready(&iif->ctr); | |
920 | } | |
921 | ||
922 | /** | |
923 | * gigaset_isdn_stop() - signal device unavailability | |
924 | * @cs: device descriptor structure. | |
925 | * | |
926 | * Called by main module to notify the LL that the device is no longer | |
927 | * available for use. | |
928 | */ | |
929 | void gigaset_isdn_stop(struct cardstate *cs) | |
930 | { | |
931 | struct gigaset_capi_ctr *iif = cs->iif; | |
932 | capi_ctr_down(&iif->ctr); | |
933 | } | |
934 | ||
935 | /* | |
936 | * kernel CAPI callback methods | |
937 | * ============================ | |
938 | */ | |
939 | ||
7bb5fdc2 TS |
940 | /* |
941 | * register CAPI application | |
942 | */ | |
943 | static void gigaset_register_appl(struct capi_ctr *ctr, u16 appl, | |
944 | capi_register_params *rp) | |
945 | { | |
946 | struct gigaset_capi_ctr *iif | |
947 | = container_of(ctr, struct gigaset_capi_ctr, ctr); | |
948 | struct cardstate *cs = ctr->driverdata; | |
949 | struct gigaset_capi_appl *ap; | |
950 | ||
951 | list_for_each_entry(ap, &iif->appls, ctrlist) | |
952 | if (ap->id == appl) { | |
953 | dev_notice(cs->dev, | |
954 | "application %u already registered\n", appl); | |
955 | return; | |
956 | } | |
957 | ||
958 | ap = kzalloc(sizeof(*ap), GFP_KERNEL); | |
959 | if (!ap) { | |
960 | dev_err(cs->dev, "%s: out of memory\n", __func__); | |
961 | return; | |
962 | } | |
963 | ap->id = appl; | |
e7752ee2 | 964 | ap->rp = *rp; |
7bb5fdc2 TS |
965 | |
966 | list_add(&ap->ctrlist, &iif->appls); | |
967 | } | |
968 | ||
969 | /* | |
970 | * release CAPI application | |
971 | */ | |
972 | static void gigaset_release_appl(struct capi_ctr *ctr, u16 appl) | |
973 | { | |
974 | struct gigaset_capi_ctr *iif | |
975 | = container_of(ctr, struct gigaset_capi_ctr, ctr); | |
976 | struct cardstate *cs = iif->ctr.driverdata; | |
977 | struct gigaset_capi_appl *ap, *tmp; | |
978 | ||
979 | list_for_each_entry_safe(ap, tmp, &iif->appls, ctrlist) | |
980 | if (ap->id == appl) { | |
981 | if (ap->connected != APCONN_NONE) { | |
982 | dev_err(cs->dev, | |
983 | "%s: application %u still connected\n", | |
984 | __func__, ap->id); | |
985 | /* ToDo: clear active connection */ | |
986 | } | |
987 | list_del(&ap->ctrlist); | |
988 | kfree(ap); | |
989 | } | |
990 | ||
991 | } | |
992 | ||
993 | /* | |
994 | * ===================================================================== | |
995 | * outgoing CAPI message handler | |
996 | * ===================================================================== | |
997 | */ | |
998 | ||
999 | /* | |
1000 | * helper function: emit reply message with given Info value | |
1001 | */ | |
1002 | static void send_conf(struct gigaset_capi_ctr *iif, | |
1003 | struct gigaset_capi_appl *ap, | |
1004 | struct sk_buff *skb, | |
1005 | u16 info) | |
1006 | { | |
1007 | /* | |
1008 | * _CONF replies always only have NCCI and Info parameters | |
1009 | * so they'll fit into the _REQ message skb | |
1010 | */ | |
1011 | capi_cmsg_answer(&iif->acmsg); | |
1012 | iif->acmsg.Info = info; | |
1013 | capi_cmsg2message(&iif->acmsg, skb->data); | |
1014 | __skb_trim(skb, CAPI_STDCONF_LEN); | |
1015 | dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg); | |
1016 | capi_ctr_handle_message(&iif->ctr, ap->id, skb); | |
1017 | } | |
1018 | ||
1019 | /* | |
1020 | * process FACILITY_REQ message | |
1021 | */ | |
1022 | static void do_facility_req(struct gigaset_capi_ctr *iif, | |
1023 | struct gigaset_capi_appl *ap, | |
1024 | struct sk_buff *skb) | |
1025 | { | |
1026 | struct cardstate *cs = iif->ctr.driverdata; | |
6c911916 | 1027 | _cmsg *cmsg = &iif->acmsg; |
7bb5fdc2 TS |
1028 | struct sk_buff *cskb; |
1029 | u8 *pparam; | |
1030 | unsigned int msgsize = CAPI_FACILITY_CONF_BASELEN; | |
1031 | u16 function, info; | |
1032 | static u8 confparam[10]; /* max. 9 octets + length byte */ | |
1033 | ||
1034 | /* decode message */ | |
6c911916 TS |
1035 | capi_message2cmsg(cmsg, skb->data); |
1036 | dump_cmsg(DEBUG_CMD, __func__, cmsg); | |
7bb5fdc2 TS |
1037 | |
1038 | /* | |
1039 | * Facility Request Parameter is not decoded by capi_message2cmsg() | |
1040 | * encoding depends on Facility Selector | |
1041 | */ | |
6c911916 | 1042 | switch (cmsg->FacilitySelector) { |
7bb5fdc2 TS |
1043 | case CAPI_FACILITY_DTMF: /* ToDo */ |
1044 | info = CapiFacilityNotSupported; | |
1045 | confparam[0] = 2; /* length */ | |
1046 | /* DTMF information: Unknown DTMF request */ | |
1047 | capimsg_setu16(confparam, 1, 2); | |
1048 | break; | |
1049 | ||
1050 | case CAPI_FACILITY_V42BIS: /* not supported */ | |
1051 | info = CapiFacilityNotSupported; | |
1052 | confparam[0] = 2; /* length */ | |
1053 | /* V.42 bis information: not available */ | |
1054 | capimsg_setu16(confparam, 1, 1); | |
1055 | break; | |
1056 | ||
1057 | case CAPI_FACILITY_SUPPSVC: | |
1058 | /* decode Function parameter */ | |
6c911916 | 1059 | pparam = cmsg->FacilityRequestParameter; |
7bb5fdc2 TS |
1060 | if (pparam == NULL || *pparam < 2) { |
1061 | dev_notice(cs->dev, "%s: %s missing\n", "FACILITY_REQ", | |
1062 | "Facility Request Parameter"); | |
1063 | send_conf(iif, ap, skb, CapiIllMessageParmCoding); | |
1064 | return; | |
1065 | } | |
1066 | function = CAPIMSG_U16(pparam, 1); | |
1067 | switch (function) { | |
1068 | case CAPI_SUPPSVC_GETSUPPORTED: | |
1069 | info = CapiSuccess; | |
1070 | /* Supplementary Service specific parameter */ | |
1071 | confparam[3] = 6; /* length */ | |
1072 | /* Supplementary services info: Success */ | |
1073 | capimsg_setu16(confparam, 4, CapiSuccess); | |
1074 | /* Supported Services: none */ | |
1075 | capimsg_setu32(confparam, 6, 0); | |
1076 | break; | |
1077 | /* ToDo: add supported services */ | |
1078 | default: | |
1079 | info = CapiFacilitySpecificFunctionNotSupported; | |
1080 | /* Supplementary Service specific parameter */ | |
1081 | confparam[3] = 2; /* length */ | |
1082 | /* Supplementary services info: not supported */ | |
1083 | capimsg_setu16(confparam, 4, | |
1084 | CapiSupplementaryServiceNotSupported); | |
1085 | } | |
1086 | ||
1087 | /* Facility confirmation parameter */ | |
1088 | confparam[0] = confparam[3] + 3; /* total length */ | |
1089 | /* Function: copy from _REQ message */ | |
1090 | capimsg_setu16(confparam, 1, function); | |
1091 | /* Supplementary Service specific parameter already set above */ | |
1092 | break; | |
1093 | ||
1094 | case CAPI_FACILITY_WAKEUP: /* ToDo */ | |
1095 | info = CapiFacilityNotSupported; | |
1096 | confparam[0] = 2; /* length */ | |
1097 | /* Number of accepted awake request parameters: 0 */ | |
1098 | capimsg_setu16(confparam, 1, 0); | |
1099 | break; | |
1100 | ||
1101 | default: | |
1102 | info = CapiFacilityNotSupported; | |
1103 | confparam[0] = 0; /* empty struct */ | |
1104 | } | |
1105 | ||
1106 | /* send FACILITY_CONF with given Info and confirmation parameter */ | |
6c911916 TS |
1107 | capi_cmsg_answer(cmsg); |
1108 | cmsg->Info = info; | |
1109 | cmsg->FacilityConfirmationParameter = confparam; | |
7bb5fdc2 TS |
1110 | msgsize += confparam[0]; /* length */ |
1111 | cskb = alloc_skb(msgsize, GFP_ATOMIC); | |
1112 | if (!cskb) { | |
1113 | dev_err(cs->dev, "%s: out of memory\n", __func__); | |
1114 | return; | |
1115 | } | |
6c911916 TS |
1116 | capi_cmsg2message(cmsg, __skb_put(cskb, msgsize)); |
1117 | dump_cmsg(DEBUG_CMD, __func__, cmsg); | |
1118 | capi_ctr_handle_message(&iif->ctr, ap->id, cskb); | |
7bb5fdc2 TS |
1119 | } |
1120 | ||
1121 | ||
1122 | /* | |
1123 | * process LISTEN_REQ message | |
1124 | * just store the masks in the application data structure | |
1125 | */ | |
1126 | static void do_listen_req(struct gigaset_capi_ctr *iif, | |
1127 | struct gigaset_capi_appl *ap, | |
1128 | struct sk_buff *skb) | |
1129 | { | |
1130 | /* decode message */ | |
1131 | capi_message2cmsg(&iif->acmsg, skb->data); | |
1132 | dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg); | |
1133 | ||
1134 | /* store listening parameters */ | |
1135 | ap->listenInfoMask = iif->acmsg.InfoMask; | |
1136 | ap->listenCIPmask = iif->acmsg.CIPmask; | |
1137 | send_conf(iif, ap, skb, CapiSuccess); | |
1138 | } | |
1139 | ||
1140 | /* | |
1141 | * process ALERT_REQ message | |
1142 | * nothing to do, Gigaset always alerts anyway | |
1143 | */ | |
1144 | static void do_alert_req(struct gigaset_capi_ctr *iif, | |
1145 | struct gigaset_capi_appl *ap, | |
1146 | struct sk_buff *skb) | |
1147 | { | |
1148 | /* decode message */ | |
1149 | capi_message2cmsg(&iif->acmsg, skb->data); | |
1150 | dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg); | |
1151 | send_conf(iif, ap, skb, CapiAlertAlreadySent); | |
1152 | } | |
1153 | ||
1154 | /* | |
1155 | * process CONNECT_REQ message | |
1156 | * allocate a B channel, prepare dial commands, queue a DIAL event, | |
1157 | * emit CONNECT_CONF reply | |
1158 | */ | |
1159 | static void do_connect_req(struct gigaset_capi_ctr *iif, | |
1160 | struct gigaset_capi_appl *ap, | |
1161 | struct sk_buff *skb) | |
1162 | { | |
1163 | struct cardstate *cs = iif->ctr.driverdata; | |
1164 | _cmsg *cmsg = &iif->acmsg; | |
1165 | struct bc_state *bcs; | |
1166 | char **commands; | |
1167 | char *s; | |
1168 | u8 *pp; | |
1169 | int i, l; | |
1170 | u16 info; | |
1171 | ||
1172 | /* decode message */ | |
6c911916 TS |
1173 | capi_message2cmsg(cmsg, skb->data); |
1174 | dump_cmsg(DEBUG_CMD, __func__, cmsg); | |
7bb5fdc2 TS |
1175 | |
1176 | /* get free B channel & construct PLCI */ | |
1177 | bcs = gigaset_get_free_channel(cs); | |
1178 | if (!bcs) { | |
1179 | dev_notice(cs->dev, "%s: no B channel available\n", | |
1180 | "CONNECT_REQ"); | |
1181 | send_conf(iif, ap, skb, CapiNoPlciAvailable); | |
1182 | return; | |
1183 | } | |
1184 | ap->bcnext = NULL; | |
1185 | bcs->ap = ap; | |
e7752ee2 TS |
1186 | bcs->rx_bufsize = ap->rp.datablklen; |
1187 | dev_kfree_skb(bcs->rx_skb); | |
1188 | gigaset_new_rx_skb(bcs); | |
7bb5fdc2 TS |
1189 | cmsg->adr.adrPLCI |= (bcs->channel + 1) << 8; |
1190 | ||
1191 | /* build command table */ | |
1192 | commands = kzalloc(AT_NUM*(sizeof *commands), GFP_KERNEL); | |
1193 | if (!commands) | |
1194 | goto oom; | |
1195 | ||
1196 | /* encode parameter: Called party number */ | |
1197 | pp = cmsg->CalledPartyNumber; | |
1198 | if (pp == NULL || *pp == 0) { | |
1199 | dev_notice(cs->dev, "%s: %s missing\n", | |
1200 | "CONNECT_REQ", "Called party number"); | |
1201 | info = CapiIllMessageParmCoding; | |
1202 | goto error; | |
1203 | } | |
1204 | l = *pp++; | |
1205 | /* check type of number/numbering plan byte */ | |
1206 | switch (*pp) { | |
1207 | case 0x80: /* unknown type / unknown numbering plan */ | |
1208 | case 0x81: /* unknown type / ISDN/Telephony numbering plan */ | |
1209 | break; | |
1210 | default: /* others: warn about potential misinterpretation */ | |
1211 | dev_notice(cs->dev, "%s: %s type/plan 0x%02x unsupported\n", | |
1212 | "CONNECT_REQ", "Called party number", *pp); | |
1213 | } | |
1214 | pp++; | |
1215 | l--; | |
1216 | /* translate "**" internal call prefix to CTP value */ | |
1217 | if (l >= 2 && pp[0] == '*' && pp[1] == '*') { | |
1218 | s = "^SCTP=0\r"; | |
1219 | pp += 2; | |
1220 | l -= 2; | |
1221 | } else { | |
1222 | s = "^SCTP=1\r"; | |
1223 | } | |
1224 | commands[AT_TYPE] = kstrdup(s, GFP_KERNEL); | |
1225 | if (!commands[AT_TYPE]) | |
1226 | goto oom; | |
1227 | commands[AT_DIAL] = kmalloc(l+3, GFP_KERNEL); | |
1228 | if (!commands[AT_DIAL]) | |
1229 | goto oom; | |
22077ebc | 1230 | snprintf(commands[AT_DIAL], l+3, "D%.*s\r", l, pp); |
7bb5fdc2 TS |
1231 | |
1232 | /* encode parameter: Calling party number */ | |
1233 | pp = cmsg->CallingPartyNumber; | |
1234 | if (pp != NULL && *pp > 0) { | |
1235 | l = *pp++; | |
1236 | ||
1237 | /* check type of number/numbering plan byte */ | |
1238 | /* ToDo: allow for/handle Ext=1? */ | |
1239 | switch (*pp) { | |
1240 | case 0x00: /* unknown type / unknown numbering plan */ | |
1241 | case 0x01: /* unknown type / ISDN/Telephony num. plan */ | |
1242 | break; | |
1243 | default: | |
1244 | dev_notice(cs->dev, | |
1245 | "%s: %s type/plan 0x%02x unsupported\n", | |
1246 | "CONNECT_REQ", "Calling party number", *pp); | |
1247 | } | |
1248 | pp++; | |
1249 | l--; | |
1250 | ||
1251 | /* check presentation indicator */ | |
1252 | if (!l) { | |
1253 | dev_notice(cs->dev, "%s: %s IE truncated\n", | |
1254 | "CONNECT_REQ", "Calling party number"); | |
1255 | info = CapiIllMessageParmCoding; | |
1256 | goto error; | |
1257 | } | |
1258 | switch (*pp & 0xfc) { /* ignore Screening indicator */ | |
1259 | case 0x80: /* Presentation allowed */ | |
1260 | s = "^SCLIP=1\r"; | |
1261 | break; | |
1262 | case 0xa0: /* Presentation restricted */ | |
1263 | s = "^SCLIP=0\r"; | |
1264 | break; | |
1265 | default: | |
1266 | dev_notice(cs->dev, "%s: invalid %s 0x%02x\n", | |
1267 | "CONNECT_REQ", | |
1268 | "Presentation/Screening indicator", | |
1269 | *pp); | |
1270 | s = "^SCLIP=1\r"; | |
1271 | } | |
1272 | commands[AT_CLIP] = kstrdup(s, GFP_KERNEL); | |
1273 | if (!commands[AT_CLIP]) | |
1274 | goto oom; | |
1275 | pp++; | |
1276 | l--; | |
1277 | ||
1278 | if (l) { | |
1279 | /* number */ | |
1280 | commands[AT_MSN] = kmalloc(l+8, GFP_KERNEL); | |
1281 | if (!commands[AT_MSN]) | |
1282 | goto oom; | |
1283 | snprintf(commands[AT_MSN], l+8, "^SMSN=%*s\r", l, pp); | |
1284 | } | |
1285 | } | |
1286 | ||
1287 | /* check parameter: CIP Value */ | |
6ad34145 | 1288 | if (cmsg->CIPValue >= ARRAY_SIZE(cip2bchlc) || |
7bb5fdc2 TS |
1289 | (cmsg->CIPValue > 0 && cip2bchlc[cmsg->CIPValue].bc == NULL)) { |
1290 | dev_notice(cs->dev, "%s: unknown CIP value %d\n", | |
1291 | "CONNECT_REQ", cmsg->CIPValue); | |
1292 | info = CapiCipValueUnknown; | |
1293 | goto error; | |
1294 | } | |
1295 | ||
1296 | /* check/encode parameter: BC */ | |
1297 | if (cmsg->BC && cmsg->BC[0]) { | |
1298 | /* explicit BC overrides CIP */ | |
1299 | l = 2*cmsg->BC[0] + 7; | |
1300 | commands[AT_BC] = kmalloc(l, GFP_KERNEL); | |
1301 | if (!commands[AT_BC]) | |
1302 | goto oom; | |
1303 | strcpy(commands[AT_BC], "^SBC="); | |
1304 | decode_ie(cmsg->BC, commands[AT_BC]+5); | |
1305 | strcpy(commands[AT_BC] + l - 2, "\r"); | |
1306 | } else if (cip2bchlc[cmsg->CIPValue].bc) { | |
1307 | l = strlen(cip2bchlc[cmsg->CIPValue].bc) + 7; | |
1308 | commands[AT_BC] = kmalloc(l, GFP_KERNEL); | |
1309 | if (!commands[AT_BC]) | |
1310 | goto oom; | |
1311 | snprintf(commands[AT_BC], l, "^SBC=%s\r", | |
1312 | cip2bchlc[cmsg->CIPValue].bc); | |
1313 | } | |
1314 | ||
1315 | /* check/encode parameter: HLC */ | |
1316 | if (cmsg->HLC && cmsg->HLC[0]) { | |
1317 | /* explicit HLC overrides CIP */ | |
1318 | l = 2*cmsg->HLC[0] + 7; | |
1319 | commands[AT_HLC] = kmalloc(l, GFP_KERNEL); | |
1320 | if (!commands[AT_HLC]) | |
1321 | goto oom; | |
1322 | strcpy(commands[AT_HLC], "^SHLC="); | |
1323 | decode_ie(cmsg->HLC, commands[AT_HLC]+5); | |
1324 | strcpy(commands[AT_HLC] + l - 2, "\r"); | |
1325 | } else if (cip2bchlc[cmsg->CIPValue].hlc) { | |
1326 | l = strlen(cip2bchlc[cmsg->CIPValue].hlc) + 7; | |
1327 | commands[AT_HLC] = kmalloc(l, GFP_KERNEL); | |
1328 | if (!commands[AT_HLC]) | |
1329 | goto oom; | |
1330 | snprintf(commands[AT_HLC], l, "^SHLC=%s\r", | |
1331 | cip2bchlc[cmsg->CIPValue].hlc); | |
1332 | } | |
1333 | ||
1334 | /* check/encode parameter: B Protocol */ | |
1335 | if (cmsg->BProtocol == CAPI_DEFAULT) { | |
1336 | bcs->proto2 = L2_HDLC; | |
1337 | dev_warn(cs->dev, | |
1338 | "B2 Protocol X.75 SLP unsupported, using Transparent\n"); | |
1339 | } else { | |
1340 | switch (cmsg->B1protocol) { | |
1341 | case 0: | |
1342 | bcs->proto2 = L2_HDLC; | |
1343 | break; | |
1344 | case 1: | |
278a5829 | 1345 | bcs->proto2 = L2_VOICE; |
7bb5fdc2 TS |
1346 | break; |
1347 | default: | |
1348 | dev_warn(cs->dev, | |
1349 | "B1 Protocol %u unsupported, using Transparent\n", | |
1350 | cmsg->B1protocol); | |
278a5829 | 1351 | bcs->proto2 = L2_VOICE; |
7bb5fdc2 TS |
1352 | } |
1353 | if (cmsg->B2protocol != 1) | |
1354 | dev_warn(cs->dev, | |
1355 | "B2 Protocol %u unsupported, using Transparent\n", | |
1356 | cmsg->B2protocol); | |
1357 | if (cmsg->B3protocol != 0) | |
1358 | dev_warn(cs->dev, | |
1359 | "B3 Protocol %u unsupported, using Transparent\n", | |
1360 | cmsg->B3protocol); | |
1361 | ignore_cstruct_param(cs, cmsg->B1configuration, | |
1362 | "CONNECT_REQ", "B1 Configuration"); | |
1363 | ignore_cstruct_param(cs, cmsg->B2configuration, | |
1364 | "CONNECT_REQ", "B2 Configuration"); | |
1365 | ignore_cstruct_param(cs, cmsg->B3configuration, | |
1366 | "CONNECT_REQ", "B3 Configuration"); | |
1367 | } | |
1368 | commands[AT_PROTO] = kmalloc(9, GFP_KERNEL); | |
1369 | if (!commands[AT_PROTO]) | |
1370 | goto oom; | |
1371 | snprintf(commands[AT_PROTO], 9, "^SBPR=%u\r", bcs->proto2); | |
1372 | ||
1373 | /* ToDo: check/encode remaining parameters */ | |
1374 | ignore_cstruct_param(cs, cmsg->CalledPartySubaddress, | |
1375 | "CONNECT_REQ", "Called pty subaddr"); | |
1376 | ignore_cstruct_param(cs, cmsg->CallingPartySubaddress, | |
1377 | "CONNECT_REQ", "Calling pty subaddr"); | |
1378 | ignore_cstruct_param(cs, cmsg->LLC, | |
1379 | "CONNECT_REQ", "LLC"); | |
6c911916 TS |
1380 | if (cmsg->AdditionalInfo != CAPI_DEFAULT) { |
1381 | ignore_cstruct_param(cs, cmsg->BChannelinformation, | |
1382 | "CONNECT_REQ", "B Channel Information"); | |
1383 | ignore_cstruct_param(cs, cmsg->Keypadfacility, | |
1384 | "CONNECT_REQ", "Keypad Facility"); | |
1385 | ignore_cstruct_param(cs, cmsg->Useruserdata, | |
1386 | "CONNECT_REQ", "User-User Data"); | |
1387 | ignore_cstruct_param(cs, cmsg->Facilitydataarray, | |
1388 | "CONNECT_REQ", "Facility Data Array"); | |
1389 | } | |
7bb5fdc2 TS |
1390 | |
1391 | /* encode parameter: B channel to use */ | |
1392 | commands[AT_ISO] = kmalloc(9, GFP_KERNEL); | |
1393 | if (!commands[AT_ISO]) | |
1394 | goto oom; | |
1395 | snprintf(commands[AT_ISO], 9, "^SISO=%u\r", | |
1396 | (unsigned) bcs->channel + 1); | |
1397 | ||
1398 | /* queue & schedule EV_DIAL event */ | |
1399 | if (!gigaset_add_event(cs, &bcs->at_state, EV_DIAL, commands, | |
1528b18f TS |
1400 | bcs->at_state.seq_index, NULL)) { |
1401 | info = CAPI_MSGOSRESOURCEERR; | |
1402 | goto error; | |
1403 | } | |
7bb5fdc2 TS |
1404 | gigaset_schedule_event(cs); |
1405 | ap->connected = APCONN_SETUP; | |
1406 | send_conf(iif, ap, skb, CapiSuccess); | |
1407 | return; | |
1408 | ||
1409 | oom: | |
1410 | dev_err(cs->dev, "%s: out of memory\n", __func__); | |
1411 | info = CAPI_MSGOSRESOURCEERR; | |
1412 | error: | |
1413 | if (commands) | |
1414 | for (i = 0; i < AT_NUM; i++) | |
1415 | kfree(commands[i]); | |
1416 | kfree(commands); | |
1417 | gigaset_free_channel(bcs); | |
1418 | send_conf(iif, ap, skb, info); | |
1419 | } | |
1420 | ||
1421 | /* | |
1422 | * process CONNECT_RESP message | |
1423 | * checks protocol parameters and queues an ACCEPT or HUP event | |
1424 | */ | |
1425 | static void do_connect_resp(struct gigaset_capi_ctr *iif, | |
1426 | struct gigaset_capi_appl *ap, | |
1427 | struct sk_buff *skb) | |
1428 | { | |
1429 | struct cardstate *cs = iif->ctr.driverdata; | |
1430 | _cmsg *cmsg = &iif->acmsg; | |
1431 | struct bc_state *bcs; | |
1432 | struct gigaset_capi_appl *oap; | |
1433 | int channel; | |
1434 | ||
1435 | /* decode message */ | |
6c911916 TS |
1436 | capi_message2cmsg(cmsg, skb->data); |
1437 | dump_cmsg(DEBUG_CMD, __func__, cmsg); | |
4dd8230a | 1438 | dev_kfree_skb_any(skb); |
7bb5fdc2 TS |
1439 | |
1440 | /* extract and check channel number from PLCI */ | |
1441 | channel = (cmsg->adr.adrPLCI >> 8) & 0xff; | |
1442 | if (!channel || channel > cs->channels) { | |
1443 | dev_notice(cs->dev, "%s: invalid %s 0x%02x\n", | |
1444 | "CONNECT_RESP", "PLCI", cmsg->adr.adrPLCI); | |
1445 | return; | |
1446 | } | |
1447 | bcs = cs->bcs + channel - 1; | |
1448 | ||
1449 | switch (cmsg->Reject) { | |
1450 | case 0: /* Accept */ | |
1451 | /* drop all competing applications, keep only this one */ | |
1452 | for (oap = bcs->ap; oap != NULL; oap = oap->bcnext) | |
1453 | if (oap != ap) | |
1454 | send_disconnect_ind(bcs, oap, | |
1455 | CapiCallGivenToOtherApplication); | |
1456 | ap->bcnext = NULL; | |
1457 | bcs->ap = ap; | |
e7752ee2 TS |
1458 | bcs->rx_bufsize = ap->rp.datablklen; |
1459 | dev_kfree_skb(bcs->rx_skb); | |
1460 | gigaset_new_rx_skb(bcs); | |
7bb5fdc2 TS |
1461 | bcs->chstate |= CHS_NOTIFY_LL; |
1462 | ||
1463 | /* check/encode B channel protocol */ | |
1464 | if (cmsg->BProtocol == CAPI_DEFAULT) { | |
1465 | bcs->proto2 = L2_HDLC; | |
1466 | dev_warn(cs->dev, | |
1467 | "B2 Protocol X.75 SLP unsupported, using Transparent\n"); | |
1468 | } else { | |
1469 | switch (cmsg->B1protocol) { | |
1470 | case 0: | |
1471 | bcs->proto2 = L2_HDLC; | |
1472 | break; | |
1473 | case 1: | |
278a5829 | 1474 | bcs->proto2 = L2_VOICE; |
7bb5fdc2 TS |
1475 | break; |
1476 | default: | |
1477 | dev_warn(cs->dev, | |
1478 | "B1 Protocol %u unsupported, using Transparent\n", | |
1479 | cmsg->B1protocol); | |
278a5829 | 1480 | bcs->proto2 = L2_VOICE; |
7bb5fdc2 TS |
1481 | } |
1482 | if (cmsg->B2protocol != 1) | |
1483 | dev_warn(cs->dev, | |
1484 | "B2 Protocol %u unsupported, using Transparent\n", | |
1485 | cmsg->B2protocol); | |
1486 | if (cmsg->B3protocol != 0) | |
1487 | dev_warn(cs->dev, | |
1488 | "B3 Protocol %u unsupported, using Transparent\n", | |
1489 | cmsg->B3protocol); | |
1490 | ignore_cstruct_param(cs, cmsg->B1configuration, | |
1491 | "CONNECT_RESP", "B1 Configuration"); | |
1492 | ignore_cstruct_param(cs, cmsg->B2configuration, | |
1493 | "CONNECT_RESP", "B2 Configuration"); | |
1494 | ignore_cstruct_param(cs, cmsg->B3configuration, | |
1495 | "CONNECT_RESP", "B3 Configuration"); | |
1496 | } | |
1497 | ||
1498 | /* ToDo: check/encode remaining parameters */ | |
1499 | ignore_cstruct_param(cs, cmsg->ConnectedNumber, | |
1500 | "CONNECT_RESP", "Connected Number"); | |
1501 | ignore_cstruct_param(cs, cmsg->ConnectedSubaddress, | |
1502 | "CONNECT_RESP", "Connected Subaddress"); | |
1503 | ignore_cstruct_param(cs, cmsg->LLC, | |
1504 | "CONNECT_RESP", "LLC"); | |
6c911916 TS |
1505 | if (cmsg->AdditionalInfo != CAPI_DEFAULT) { |
1506 | ignore_cstruct_param(cs, cmsg->BChannelinformation, | |
1507 | "CONNECT_RESP", "BChannel Information"); | |
1508 | ignore_cstruct_param(cs, cmsg->Keypadfacility, | |
1509 | "CONNECT_RESP", "Keypad Facility"); | |
1510 | ignore_cstruct_param(cs, cmsg->Useruserdata, | |
1511 | "CONNECT_RESP", "User-User Data"); | |
1512 | ignore_cstruct_param(cs, cmsg->Facilitydataarray, | |
1513 | "CONNECT_RESP", "Facility Data Array"); | |
1514 | } | |
7bb5fdc2 TS |
1515 | |
1516 | /* Accept call */ | |
1517 | if (!gigaset_add_event(cs, &cs->bcs[channel-1].at_state, | |
1518 | EV_ACCEPT, NULL, 0, NULL)) | |
1519 | return; | |
7bb5fdc2 TS |
1520 | gigaset_schedule_event(cs); |
1521 | return; | |
1522 | ||
1523 | case 1: /* Ignore */ | |
1524 | /* send DISCONNECT_IND to this application */ | |
1525 | send_disconnect_ind(bcs, ap, 0); | |
1526 | ||
1527 | /* remove it from the list of listening apps */ | |
1528 | if (bcs->ap == ap) { | |
1529 | bcs->ap = ap->bcnext; | |
1530 | if (bcs->ap == NULL) | |
1531 | /* last one: stop ev-layer hupD notifications */ | |
1532 | bcs->chstate &= ~CHS_NOTIFY_LL; | |
1533 | return; | |
1534 | } | |
1535 | for (oap = bcs->ap; oap != NULL; oap = oap->bcnext) { | |
1536 | if (oap->bcnext == ap) { | |
1537 | oap->bcnext = oap->bcnext->bcnext; | |
1538 | return; | |
1539 | } | |
1540 | } | |
1541 | dev_err(cs->dev, "%s: application %u not found\n", | |
1542 | __func__, ap->id); | |
1543 | return; | |
1544 | ||
1545 | default: /* Reject */ | |
1546 | /* drop all competing applications, keep only this one */ | |
1547 | for (oap = bcs->ap; oap != NULL; oap = oap->bcnext) | |
1548 | if (oap != ap) | |
1549 | send_disconnect_ind(bcs, oap, | |
1550 | CapiCallGivenToOtherApplication); | |
1551 | ap->bcnext = NULL; | |
1552 | bcs->ap = ap; | |
1553 | ||
1554 | /* reject call - will trigger DISCONNECT_IND for this app */ | |
1555 | dev_info(cs->dev, "%s: Reject=%x\n", | |
1556 | "CONNECT_RESP", cmsg->Reject); | |
1557 | if (!gigaset_add_event(cs, &cs->bcs[channel-1].at_state, | |
1558 | EV_HUP, NULL, 0, NULL)) | |
1559 | return; | |
7bb5fdc2 TS |
1560 | gigaset_schedule_event(cs); |
1561 | return; | |
1562 | } | |
1563 | } | |
1564 | ||
1565 | /* | |
1566 | * process CONNECT_B3_REQ message | |
1567 | * build NCCI and emit CONNECT_B3_CONF reply | |
1568 | */ | |
1569 | static void do_connect_b3_req(struct gigaset_capi_ctr *iif, | |
1570 | struct gigaset_capi_appl *ap, | |
1571 | struct sk_buff *skb) | |
1572 | { | |
1573 | struct cardstate *cs = iif->ctr.driverdata; | |
6c911916 | 1574 | _cmsg *cmsg = &iif->acmsg; |
7bb5fdc2 TS |
1575 | int channel; |
1576 | ||
1577 | /* decode message */ | |
6c911916 TS |
1578 | capi_message2cmsg(cmsg, skb->data); |
1579 | dump_cmsg(DEBUG_CMD, __func__, cmsg); | |
7bb5fdc2 TS |
1580 | |
1581 | /* extract and check channel number from PLCI */ | |
6c911916 | 1582 | channel = (cmsg->adr.adrPLCI >> 8) & 0xff; |
7bb5fdc2 TS |
1583 | if (!channel || channel > cs->channels) { |
1584 | dev_notice(cs->dev, "%s: invalid %s 0x%02x\n", | |
6c911916 | 1585 | "CONNECT_B3_REQ", "PLCI", cmsg->adr.adrPLCI); |
7bb5fdc2 TS |
1586 | send_conf(iif, ap, skb, CapiIllContrPlciNcci); |
1587 | return; | |
1588 | } | |
1589 | ||
1590 | /* mark logical connection active */ | |
1591 | ap->connected = APCONN_ACTIVE; | |
1592 | ||
1593 | /* build NCCI: always 1 (one B3 connection only) */ | |
6c911916 | 1594 | cmsg->adr.adrNCCI |= 1 << 16; |
7bb5fdc2 TS |
1595 | |
1596 | /* NCPI parameter: not applicable for B3 Transparent */ | |
6c911916 TS |
1597 | ignore_cstruct_param(cs, cmsg->NCPI, "CONNECT_B3_REQ", "NCPI"); |
1598 | send_conf(iif, ap, skb, (cmsg->NCPI && cmsg->NCPI[0]) ? | |
1599 | CapiNcpiNotSupportedByProtocol : CapiSuccess); | |
7bb5fdc2 TS |
1600 | } |
1601 | ||
1602 | /* | |
1603 | * process CONNECT_B3_RESP message | |
1604 | * Depending on the Reject parameter, either emit CONNECT_B3_ACTIVE_IND | |
1605 | * or queue EV_HUP and emit DISCONNECT_B3_IND. | |
1606 | * The emitted message is always shorter than the received one, | |
1607 | * allowing to reuse the skb. | |
1608 | */ | |
1609 | static void do_connect_b3_resp(struct gigaset_capi_ctr *iif, | |
1610 | struct gigaset_capi_appl *ap, | |
1611 | struct sk_buff *skb) | |
1612 | { | |
1613 | struct cardstate *cs = iif->ctr.driverdata; | |
6c911916 TS |
1614 | _cmsg *cmsg = &iif->acmsg; |
1615 | struct bc_state *bcs; | |
7bb5fdc2 TS |
1616 | int channel; |
1617 | unsigned int msgsize; | |
1618 | u8 command; | |
1619 | ||
1620 | /* decode message */ | |
6c911916 TS |
1621 | capi_message2cmsg(cmsg, skb->data); |
1622 | dump_cmsg(DEBUG_CMD, __func__, cmsg); | |
7bb5fdc2 TS |
1623 | |
1624 | /* extract and check channel number and NCCI */ | |
6c911916 | 1625 | channel = (cmsg->adr.adrNCCI >> 8) & 0xff; |
7bb5fdc2 | 1626 | if (!channel || channel > cs->channels || |
6c911916 | 1627 | ((cmsg->adr.adrNCCI >> 16) & 0xffff) != 1) { |
7bb5fdc2 | 1628 | dev_notice(cs->dev, "%s: invalid %s 0x%02x\n", |
6c911916 | 1629 | "CONNECT_B3_RESP", "NCCI", cmsg->adr.adrNCCI); |
4dd8230a | 1630 | dev_kfree_skb_any(skb); |
7bb5fdc2 TS |
1631 | return; |
1632 | } | |
1633 | bcs = &cs->bcs[channel-1]; | |
1634 | ||
6c911916 | 1635 | if (cmsg->Reject) { |
7bb5fdc2 TS |
1636 | /* Reject: clear B3 connect received flag */ |
1637 | ap->connected = APCONN_SETUP; | |
1638 | ||
1639 | /* trigger hangup, causing eventual DISCONNECT_IND */ | |
1640 | if (!gigaset_add_event(cs, &bcs->at_state, | |
1641 | EV_HUP, NULL, 0, NULL)) { | |
4dd8230a | 1642 | dev_kfree_skb_any(skb); |
7bb5fdc2 TS |
1643 | return; |
1644 | } | |
7bb5fdc2 TS |
1645 | gigaset_schedule_event(cs); |
1646 | ||
1647 | /* emit DISCONNECT_B3_IND */ | |
1648 | command = CAPI_DISCONNECT_B3; | |
1649 | msgsize = CAPI_DISCONNECT_B3_IND_BASELEN; | |
1650 | } else { | |
1651 | /* | |
1652 | * Accept: emit CONNECT_B3_ACTIVE_IND immediately, as | |
1653 | * we only send CONNECT_B3_IND if the B channel is up | |
1654 | */ | |
1655 | command = CAPI_CONNECT_B3_ACTIVE; | |
1656 | msgsize = CAPI_CONNECT_B3_ACTIVE_IND_BASELEN; | |
1657 | } | |
6c911916 TS |
1658 | capi_cmsg_header(cmsg, ap->id, command, CAPI_IND, |
1659 | ap->nextMessageNumber++, cmsg->adr.adrNCCI); | |
7bb5fdc2 | 1660 | __skb_trim(skb, msgsize); |
6c911916 TS |
1661 | capi_cmsg2message(cmsg, skb->data); |
1662 | dump_cmsg(DEBUG_CMD, __func__, cmsg); | |
7bb5fdc2 TS |
1663 | capi_ctr_handle_message(&iif->ctr, ap->id, skb); |
1664 | } | |
1665 | ||
1666 | /* | |
1667 | * process DISCONNECT_REQ message | |
1668 | * schedule EV_HUP and emit DISCONNECT_B3_IND if necessary, | |
1669 | * emit DISCONNECT_CONF reply | |
1670 | */ | |
1671 | static void do_disconnect_req(struct gigaset_capi_ctr *iif, | |
1672 | struct gigaset_capi_appl *ap, | |
1673 | struct sk_buff *skb) | |
1674 | { | |
1675 | struct cardstate *cs = iif->ctr.driverdata; | |
6c911916 | 1676 | _cmsg *cmsg = &iif->acmsg; |
7bb5fdc2 TS |
1677 | struct bc_state *bcs; |
1678 | _cmsg *b3cmsg; | |
1679 | struct sk_buff *b3skb; | |
1680 | int channel; | |
1681 | ||
1682 | /* decode message */ | |
6c911916 TS |
1683 | capi_message2cmsg(cmsg, skb->data); |
1684 | dump_cmsg(DEBUG_CMD, __func__, cmsg); | |
7bb5fdc2 TS |
1685 | |
1686 | /* extract and check channel number from PLCI */ | |
6c911916 | 1687 | channel = (cmsg->adr.adrPLCI >> 8) & 0xff; |
7bb5fdc2 TS |
1688 | if (!channel || channel > cs->channels) { |
1689 | dev_notice(cs->dev, "%s: invalid %s 0x%02x\n", | |
6c911916 | 1690 | "DISCONNECT_REQ", "PLCI", cmsg->adr.adrPLCI); |
7bb5fdc2 TS |
1691 | send_conf(iif, ap, skb, CapiIllContrPlciNcci); |
1692 | return; | |
1693 | } | |
1694 | bcs = cs->bcs + channel - 1; | |
1695 | ||
1696 | /* ToDo: process parameter: Additional info */ | |
6c911916 TS |
1697 | if (cmsg->AdditionalInfo != CAPI_DEFAULT) { |
1698 | ignore_cstruct_param(cs, cmsg->BChannelinformation, | |
1699 | "DISCONNECT_REQ", "B Channel Information"); | |
1700 | ignore_cstruct_param(cs, cmsg->Keypadfacility, | |
1701 | "DISCONNECT_REQ", "Keypad Facility"); | |
1702 | ignore_cstruct_param(cs, cmsg->Useruserdata, | |
1703 | "DISCONNECT_REQ", "User-User Data"); | |
1704 | ignore_cstruct_param(cs, cmsg->Facilitydataarray, | |
1705 | "DISCONNECT_REQ", "Facility Data Array"); | |
1706 | } | |
7bb5fdc2 TS |
1707 | |
1708 | /* skip if DISCONNECT_IND already sent */ | |
1709 | if (!ap->connected) | |
1710 | return; | |
1711 | ||
1712 | /* check for active logical connection */ | |
1713 | if (ap->connected >= APCONN_ACTIVE) { | |
1714 | /* | |
1715 | * emit DISCONNECT_B3_IND with cause 0x3301 | |
1716 | * use separate cmsg structure, as the content of iif->acmsg | |
1717 | * is still needed for creating the _CONF message | |
1718 | */ | |
1719 | b3cmsg = kmalloc(sizeof(*b3cmsg), GFP_KERNEL); | |
1720 | if (!b3cmsg) { | |
1721 | dev_err(cs->dev, "%s: out of memory\n", __func__); | |
1722 | send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR); | |
1723 | return; | |
1724 | } | |
1725 | capi_cmsg_header(b3cmsg, ap->id, CAPI_DISCONNECT_B3, CAPI_IND, | |
1726 | ap->nextMessageNumber++, | |
6c911916 | 1727 | cmsg->adr.adrPLCI | (1 << 16)); |
7bb5fdc2 TS |
1728 | b3cmsg->Reason_B3 = CapiProtocolErrorLayer1; |
1729 | b3skb = alloc_skb(CAPI_DISCONNECT_B3_IND_BASELEN, GFP_KERNEL); | |
1730 | if (b3skb == NULL) { | |
1731 | dev_err(cs->dev, "%s: out of memory\n", __func__); | |
1732 | send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR); | |
1733 | return; | |
1734 | } | |
1735 | capi_cmsg2message(b3cmsg, | |
1736 | __skb_put(b3skb, CAPI_DISCONNECT_B3_IND_BASELEN)); | |
1737 | kfree(b3cmsg); | |
1738 | capi_ctr_handle_message(&iif->ctr, ap->id, b3skb); | |
1739 | } | |
1740 | ||
1741 | /* trigger hangup, causing eventual DISCONNECT_IND */ | |
1742 | if (!gigaset_add_event(cs, &bcs->at_state, EV_HUP, NULL, 0, NULL)) { | |
7bb5fdc2 TS |
1743 | send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR); |
1744 | return; | |
1745 | } | |
7bb5fdc2 TS |
1746 | gigaset_schedule_event(cs); |
1747 | ||
1748 | /* emit reply */ | |
1749 | send_conf(iif, ap, skb, CapiSuccess); | |
1750 | } | |
1751 | ||
1752 | /* | |
1753 | * process DISCONNECT_B3_REQ message | |
1754 | * schedule EV_HUP and emit DISCONNECT_B3_CONF reply | |
1755 | */ | |
1756 | static void do_disconnect_b3_req(struct gigaset_capi_ctr *iif, | |
1757 | struct gigaset_capi_appl *ap, | |
1758 | struct sk_buff *skb) | |
1759 | { | |
1760 | struct cardstate *cs = iif->ctr.driverdata; | |
6c911916 | 1761 | _cmsg *cmsg = &iif->acmsg; |
7bb5fdc2 TS |
1762 | int channel; |
1763 | ||
1764 | /* decode message */ | |
6c911916 TS |
1765 | capi_message2cmsg(cmsg, skb->data); |
1766 | dump_cmsg(DEBUG_CMD, __func__, cmsg); | |
7bb5fdc2 TS |
1767 | |
1768 | /* extract and check channel number and NCCI */ | |
6c911916 | 1769 | channel = (cmsg->adr.adrNCCI >> 8) & 0xff; |
7bb5fdc2 | 1770 | if (!channel || channel > cs->channels || |
6c911916 | 1771 | ((cmsg->adr.adrNCCI >> 16) & 0xffff) != 1) { |
7bb5fdc2 | 1772 | dev_notice(cs->dev, "%s: invalid %s 0x%02x\n", |
6c911916 | 1773 | "DISCONNECT_B3_REQ", "NCCI", cmsg->adr.adrNCCI); |
7bb5fdc2 TS |
1774 | send_conf(iif, ap, skb, CapiIllContrPlciNcci); |
1775 | return; | |
1776 | } | |
1777 | ||
1778 | /* reject if logical connection not active */ | |
1779 | if (ap->connected < APCONN_ACTIVE) { | |
1780 | send_conf(iif, ap, skb, | |
1781 | CapiMessageNotSupportedInCurrentState); | |
1782 | return; | |
1783 | } | |
1784 | ||
1785 | /* trigger hangup, causing eventual DISCONNECT_B3_IND */ | |
1786 | if (!gigaset_add_event(cs, &cs->bcs[channel-1].at_state, | |
1787 | EV_HUP, NULL, 0, NULL)) { | |
7bb5fdc2 TS |
1788 | send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR); |
1789 | return; | |
1790 | } | |
7bb5fdc2 TS |
1791 | gigaset_schedule_event(cs); |
1792 | ||
1793 | /* NCPI parameter: not applicable for B3 Transparent */ | |
6c911916 | 1794 | ignore_cstruct_param(cs, cmsg->NCPI, |
7bb5fdc2 | 1795 | "DISCONNECT_B3_REQ", "NCPI"); |
6c911916 TS |
1796 | send_conf(iif, ap, skb, (cmsg->NCPI && cmsg->NCPI[0]) ? |
1797 | CapiNcpiNotSupportedByProtocol : CapiSuccess); | |
7bb5fdc2 TS |
1798 | } |
1799 | ||
1800 | /* | |
1801 | * process DATA_B3_REQ message | |
1802 | */ | |
1803 | static void do_data_b3_req(struct gigaset_capi_ctr *iif, | |
1804 | struct gigaset_capi_appl *ap, | |
1805 | struct sk_buff *skb) | |
1806 | { | |
1807 | struct cardstate *cs = iif->ctr.driverdata; | |
1808 | int channel = CAPIMSG_PLCI_PART(skb->data); | |
1809 | u16 ncci = CAPIMSG_NCCI_PART(skb->data); | |
1810 | u16 msglen = CAPIMSG_LEN(skb->data); | |
1811 | u16 datalen = CAPIMSG_DATALEN(skb->data); | |
1812 | u16 flags = CAPIMSG_FLAGS(skb->data); | |
23b36778 TS |
1813 | u16 msgid = CAPIMSG_MSGID(skb->data); |
1814 | u16 handle = CAPIMSG_HANDLE_REQ(skb->data); | |
7bb5fdc2 TS |
1815 | |
1816 | /* frequent message, avoid _cmsg overhead */ | |
1817 | dump_rawmsg(DEBUG_LLDATA, "DATA_B3_REQ", skb->data); | |
1818 | ||
1819 | gig_dbg(DEBUG_LLDATA, | |
1820 | "Receiving data from LL (ch: %d, flg: %x, sz: %d|%d)", | |
1821 | channel, flags, msglen, datalen); | |
1822 | ||
1823 | /* check parameters */ | |
1824 | if (channel == 0 || channel > cs->channels || ncci != 1) { | |
1825 | dev_notice(cs->dev, "%s: invalid %s 0x%02x\n", | |
1826 | "DATA_B3_REQ", "NCCI", CAPIMSG_NCCI(skb->data)); | |
1827 | send_conf(iif, ap, skb, CapiIllContrPlciNcci); | |
1828 | return; | |
1829 | } | |
1830 | if (msglen != CAPI_DATA_B3_REQ_LEN && msglen != CAPI_DATA_B3_REQ_LEN64) | |
1831 | dev_notice(cs->dev, "%s: unexpected length %d\n", | |
1832 | "DATA_B3_REQ", msglen); | |
1833 | if (msglen + datalen != skb->len) | |
1834 | dev_notice(cs->dev, "%s: length mismatch (%d+%d!=%d)\n", | |
1835 | "DATA_B3_REQ", msglen, datalen, skb->len); | |
1836 | if (msglen + datalen > skb->len) { | |
1837 | /* message too short for announced data length */ | |
1838 | send_conf(iif, ap, skb, CapiIllMessageParmCoding); /* ? */ | |
1839 | return; | |
1840 | } | |
1841 | if (flags & CAPI_FLAGS_RESERVED) { | |
1842 | dev_notice(cs->dev, "%s: reserved flags set (%x)\n", | |
1843 | "DATA_B3_REQ", flags); | |
1844 | send_conf(iif, ap, skb, CapiIllMessageParmCoding); | |
1845 | return; | |
1846 | } | |
1847 | ||
1848 | /* reject if logical connection not active */ | |
1849 | if (ap->connected < APCONN_ACTIVE) { | |
1850 | send_conf(iif, ap, skb, CapiMessageNotSupportedInCurrentState); | |
1851 | return; | |
1852 | } | |
1853 | ||
4dd8230a TS |
1854 | /* pull CAPI message into link layer header */ |
1855 | skb_reset_mac_header(skb); | |
1856 | skb->mac_len = msglen; | |
7bb5fdc2 | 1857 | skb_pull(skb, msglen); |
4dd8230a TS |
1858 | |
1859 | /* pass to device-specific module */ | |
7bb5fdc2 TS |
1860 | if (cs->ops->send_skb(&cs->bcs[channel-1], skb) < 0) { |
1861 | send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR); | |
1862 | return; | |
1863 | } | |
1864 | ||
7bb5fdc2 | 1865 | /* |
23b36778 TS |
1866 | * DATA_B3_CONF will be sent by gigaset_skb_sent() only if "delivery |
1867 | * confirmation" bit is set; otherwise we have to send it now | |
7bb5fdc2 | 1868 | */ |
23b36778 TS |
1869 | if (!(flags & CAPI_FLAGS_DELIVERY_CONFIRMATION)) |
1870 | send_data_b3_conf(cs, &iif->ctr, ap->id, msgid, channel, handle, | |
1871 | flags ? CapiFlagsNotSupportedByProtocol | |
1872 | : CAPI_NOERROR); | |
7bb5fdc2 TS |
1873 | } |
1874 | ||
1875 | /* | |
1876 | * process RESET_B3_REQ message | |
1877 | * just always reply "not supported by current protocol" | |
1878 | */ | |
1879 | static void do_reset_b3_req(struct gigaset_capi_ctr *iif, | |
1880 | struct gigaset_capi_appl *ap, | |
1881 | struct sk_buff *skb) | |
1882 | { | |
1883 | /* decode message */ | |
1884 | capi_message2cmsg(&iif->acmsg, skb->data); | |
1885 | dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg); | |
1886 | send_conf(iif, ap, skb, | |
1887 | CapiResetProcedureNotSupportedByCurrentProtocol); | |
1888 | } | |
1889 | ||
1890 | /* | |
1891 | * dump unsupported/ignored messages at most twice per minute, | |
1892 | * some apps send those very frequently | |
1893 | */ | |
1894 | static unsigned long ignored_msg_dump_time; | |
1895 | ||
1896 | /* | |
1897 | * unsupported CAPI message handler | |
1898 | */ | |
1899 | static void do_unsupported(struct gigaset_capi_ctr *iif, | |
1900 | struct gigaset_capi_appl *ap, | |
1901 | struct sk_buff *skb) | |
1902 | { | |
1903 | /* decode message */ | |
1904 | capi_message2cmsg(&iif->acmsg, skb->data); | |
1905 | if (printk_timed_ratelimit(&ignored_msg_dump_time, 30 * 1000)) | |
1906 | dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg); | |
1907 | send_conf(iif, ap, skb, CapiMessageNotSupportedInCurrentState); | |
1908 | } | |
1909 | ||
1910 | /* | |
1911 | * CAPI message handler: no-op | |
1912 | */ | |
1913 | static void do_nothing(struct gigaset_capi_ctr *iif, | |
1914 | struct gigaset_capi_appl *ap, | |
1915 | struct sk_buff *skb) | |
1916 | { | |
1917 | if (printk_timed_ratelimit(&ignored_msg_dump_time, 30 * 1000)) { | |
1918 | /* decode message */ | |
1919 | capi_message2cmsg(&iif->acmsg, skb->data); | |
1920 | dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg); | |
1921 | } | |
4dd8230a | 1922 | dev_kfree_skb_any(skb); |
7bb5fdc2 TS |
1923 | } |
1924 | ||
1925 | static void do_data_b3_resp(struct gigaset_capi_ctr *iif, | |
1926 | struct gigaset_capi_appl *ap, | |
1927 | struct sk_buff *skb) | |
1928 | { | |
1929 | dump_rawmsg(DEBUG_LLDATA, __func__, skb->data); | |
4dd8230a | 1930 | dev_kfree_skb_any(skb); |
7bb5fdc2 TS |
1931 | } |
1932 | ||
1933 | /* table of outgoing CAPI message handlers with lookup function */ | |
1934 | typedef void (*capi_send_handler_t)(struct gigaset_capi_ctr *, | |
1935 | struct gigaset_capi_appl *, | |
1936 | struct sk_buff *); | |
1937 | ||
1938 | static struct { | |
1939 | u16 cmd; | |
1940 | capi_send_handler_t handler; | |
1941 | } capi_send_handler_table[] = { | |
1942 | /* most frequent messages first for faster lookup */ | |
1943 | { CAPI_DATA_B3_REQ, do_data_b3_req }, | |
1944 | { CAPI_DATA_B3_RESP, do_data_b3_resp }, | |
1945 | ||
1946 | { CAPI_ALERT_REQ, do_alert_req }, | |
1947 | { CAPI_CONNECT_ACTIVE_RESP, do_nothing }, | |
1948 | { CAPI_CONNECT_B3_ACTIVE_RESP, do_nothing }, | |
1949 | { CAPI_CONNECT_B3_REQ, do_connect_b3_req }, | |
1950 | { CAPI_CONNECT_B3_RESP, do_connect_b3_resp }, | |
1951 | { CAPI_CONNECT_B3_T90_ACTIVE_RESP, do_nothing }, | |
1952 | { CAPI_CONNECT_REQ, do_connect_req }, | |
1953 | { CAPI_CONNECT_RESP, do_connect_resp }, | |
1954 | { CAPI_DISCONNECT_B3_REQ, do_disconnect_b3_req }, | |
1955 | { CAPI_DISCONNECT_B3_RESP, do_nothing }, | |
1956 | { CAPI_DISCONNECT_REQ, do_disconnect_req }, | |
1957 | { CAPI_DISCONNECT_RESP, do_nothing }, | |
1958 | { CAPI_FACILITY_REQ, do_facility_req }, | |
1959 | { CAPI_FACILITY_RESP, do_nothing }, | |
1960 | { CAPI_LISTEN_REQ, do_listen_req }, | |
1961 | { CAPI_SELECT_B_PROTOCOL_REQ, do_unsupported }, | |
1962 | { CAPI_RESET_B3_REQ, do_reset_b3_req }, | |
1963 | { CAPI_RESET_B3_RESP, do_nothing }, | |
1964 | ||
1965 | /* | |
1966 | * ToDo: support overlap sending (requires ev-layer state | |
1967 | * machine extension to generate additional ATD commands) | |
1968 | */ | |
1969 | { CAPI_INFO_REQ, do_unsupported }, | |
1970 | { CAPI_INFO_RESP, do_nothing }, | |
1971 | ||
1972 | /* | |
1973 | * ToDo: what's the proper response for these? | |
1974 | */ | |
1975 | { CAPI_MANUFACTURER_REQ, do_nothing }, | |
1976 | { CAPI_MANUFACTURER_RESP, do_nothing }, | |
1977 | }; | |
1978 | ||
1979 | /* look up handler */ | |
1980 | static inline capi_send_handler_t lookup_capi_send_handler(const u16 cmd) | |
1981 | { | |
1982 | size_t i; | |
1983 | ||
1984 | for (i = 0; i < ARRAY_SIZE(capi_send_handler_table); i++) | |
1985 | if (capi_send_handler_table[i].cmd == cmd) | |
1986 | return capi_send_handler_table[i].handler; | |
1987 | return NULL; | |
1988 | } | |
1989 | ||
1990 | ||
1991 | /** | |
1992 | * gigaset_send_message() - accept a CAPI message from an application | |
1993 | * @ctr: controller descriptor structure. | |
1994 | * @skb: CAPI message. | |
1995 | * | |
1996 | * Return value: CAPI error code | |
1997 | * Note: capidrv (and probably others, too) only uses the return value to | |
1998 | * decide whether it has to free the skb (only if result != CAPI_NOERROR (0)) | |
1999 | */ | |
2000 | static u16 gigaset_send_message(struct capi_ctr *ctr, struct sk_buff *skb) | |
2001 | { | |
2002 | struct gigaset_capi_ctr *iif | |
2003 | = container_of(ctr, struct gigaset_capi_ctr, ctr); | |
2004 | struct cardstate *cs = ctr->driverdata; | |
2005 | struct gigaset_capi_appl *ap; | |
2006 | capi_send_handler_t handler; | |
2007 | ||
2008 | /* can only handle linear sk_buffs */ | |
2009 | if (skb_linearize(skb) < 0) { | |
2010 | dev_warn(cs->dev, "%s: skb_linearize failed\n", __func__); | |
2011 | return CAPI_MSGOSRESOURCEERR; | |
2012 | } | |
2013 | ||
2014 | /* retrieve application data structure */ | |
2015 | ap = get_appl(iif, CAPIMSG_APPID(skb->data)); | |
2016 | if (!ap) { | |
2017 | dev_notice(cs->dev, "%s: application %u not registered\n", | |
2018 | __func__, CAPIMSG_APPID(skb->data)); | |
2019 | return CAPI_ILLAPPNR; | |
2020 | } | |
2021 | ||
2022 | /* look up command */ | |
2023 | handler = lookup_capi_send_handler(CAPIMSG_CMD(skb->data)); | |
2024 | if (!handler) { | |
2025 | /* unknown/unsupported message type */ | |
2026 | if (printk_ratelimit()) | |
2027 | dev_notice(cs->dev, "%s: unsupported message %u\n", | |
2028 | __func__, CAPIMSG_CMD(skb->data)); | |
2029 | return CAPI_ILLCMDORSUBCMDORMSGTOSMALL; | |
2030 | } | |
2031 | ||
2032 | /* serialize */ | |
2033 | if (atomic_add_return(1, &iif->sendqlen) > 1) { | |
2034 | /* queue behind other messages */ | |
2035 | skb_queue_tail(&iif->sendqueue, skb); | |
2036 | return CAPI_NOERROR; | |
2037 | } | |
2038 | ||
2039 | /* process message */ | |
2040 | handler(iif, ap, skb); | |
2041 | ||
2042 | /* process other messages arrived in the meantime */ | |
2043 | while (atomic_sub_return(1, &iif->sendqlen) > 0) { | |
2044 | skb = skb_dequeue(&iif->sendqueue); | |
2045 | if (!skb) { | |
2046 | /* should never happen */ | |
2047 | dev_err(cs->dev, "%s: send queue empty\n", __func__); | |
2048 | continue; | |
2049 | } | |
2050 | ap = get_appl(iif, CAPIMSG_APPID(skb->data)); | |
2051 | if (!ap) { | |
2052 | /* could that happen? */ | |
2053 | dev_warn(cs->dev, "%s: application %u vanished\n", | |
2054 | __func__, CAPIMSG_APPID(skb->data)); | |
2055 | continue; | |
2056 | } | |
2057 | handler = lookup_capi_send_handler(CAPIMSG_CMD(skb->data)); | |
2058 | if (!handler) { | |
2059 | /* should never happen */ | |
2060 | dev_err(cs->dev, "%s: handler %x vanished\n", | |
2061 | __func__, CAPIMSG_CMD(skb->data)); | |
2062 | continue; | |
2063 | } | |
2064 | handler(iif, ap, skb); | |
2065 | } | |
2066 | ||
2067 | return CAPI_NOERROR; | |
2068 | } | |
2069 | ||
2070 | /** | |
2071 | * gigaset_procinfo() - build single line description for controller | |
2072 | * @ctr: controller descriptor structure. | |
2073 | * | |
2074 | * Return value: pointer to generated string (null terminated) | |
2075 | */ | |
2076 | static char *gigaset_procinfo(struct capi_ctr *ctr) | |
2077 | { | |
2078 | return ctr->name; /* ToDo: more? */ | |
2079 | } | |
2080 | ||
9a58a80a | 2081 | static int gigaset_proc_show(struct seq_file *m, void *v) |
7bb5fdc2 | 2082 | { |
9a58a80a | 2083 | struct capi_ctr *ctr = m->private; |
7bb5fdc2 TS |
2084 | struct cardstate *cs = ctr->driverdata; |
2085 | char *s; | |
2086 | int i; | |
9a58a80a AD |
2087 | |
2088 | seq_printf(m, "%-16s %s\n", "name", ctr->name); | |
2089 | seq_printf(m, "%-16s %s %s\n", "dev", | |
7bb5fdc2 | 2090 | dev_driver_string(cs->dev), dev_name(cs->dev)); |
9a58a80a | 2091 | seq_printf(m, "%-16s %d\n", "id", cs->myid); |
7bb5fdc2 | 2092 | if (cs->gotfwver) |
9a58a80a | 2093 | seq_printf(m, "%-16s %d.%d.%d.%d\n", "firmware", |
7bb5fdc2 | 2094 | cs->fwver[0], cs->fwver[1], cs->fwver[2], cs->fwver[3]); |
9a58a80a AD |
2095 | seq_printf(m, "%-16s %d\n", "channels", cs->channels); |
2096 | seq_printf(m, "%-16s %s\n", "onechannel", cs->onechannel ? "yes" : "no"); | |
7bb5fdc2 TS |
2097 | |
2098 | switch (cs->mode) { | |
2099 | case M_UNKNOWN: | |
2100 | s = "unknown"; | |
2101 | break; | |
2102 | case M_CONFIG: | |
2103 | s = "config"; | |
2104 | break; | |
2105 | case M_UNIMODEM: | |
2106 | s = "Unimodem"; | |
2107 | break; | |
2108 | case M_CID: | |
2109 | s = "CID"; | |
2110 | break; | |
2111 | default: | |
2112 | s = "??"; | |
2113 | } | |
9a58a80a | 2114 | seq_printf(m, "%-16s %s\n", "mode", s); |
7bb5fdc2 TS |
2115 | |
2116 | switch (cs->mstate) { | |
2117 | case MS_UNINITIALIZED: | |
2118 | s = "uninitialized"; | |
2119 | break; | |
2120 | case MS_INIT: | |
2121 | s = "init"; | |
2122 | break; | |
2123 | case MS_LOCKED: | |
2124 | s = "locked"; | |
2125 | break; | |
2126 | case MS_SHUTDOWN: | |
2127 | s = "shutdown"; | |
2128 | break; | |
2129 | case MS_RECOVER: | |
2130 | s = "recover"; | |
2131 | break; | |
2132 | case MS_READY: | |
2133 | s = "ready"; | |
2134 | break; | |
2135 | default: | |
2136 | s = "??"; | |
2137 | } | |
9a58a80a | 2138 | seq_printf(m, "%-16s %s\n", "mstate", s); |
7bb5fdc2 | 2139 | |
9a58a80a AD |
2140 | seq_printf(m, "%-16s %s\n", "running", cs->running ? "yes" : "no"); |
2141 | seq_printf(m, "%-16s %s\n", "connected", cs->connected ? "yes" : "no"); | |
2142 | seq_printf(m, "%-16s %s\n", "isdn_up", cs->isdn_up ? "yes" : "no"); | |
2143 | seq_printf(m, "%-16s %s\n", "cidmode", cs->cidmode ? "yes" : "no"); | |
7bb5fdc2 TS |
2144 | |
2145 | for (i = 0; i < cs->channels; i++) { | |
9a58a80a | 2146 | seq_printf(m, "[%d]%-13s %d\n", i, "corrupted", |
7bb5fdc2 | 2147 | cs->bcs[i].corrupted); |
9a58a80a | 2148 | seq_printf(m, "[%d]%-13s %d\n", i, "trans_down", |
7bb5fdc2 | 2149 | cs->bcs[i].trans_down); |
9a58a80a | 2150 | seq_printf(m, "[%d]%-13s %d\n", i, "trans_up", |
7bb5fdc2 | 2151 | cs->bcs[i].trans_up); |
9a58a80a | 2152 | seq_printf(m, "[%d]%-13s %d\n", i, "chstate", |
7bb5fdc2 TS |
2153 | cs->bcs[i].chstate); |
2154 | switch (cs->bcs[i].proto2) { | |
2155 | case L2_BITSYNC: | |
2156 | s = "bitsync"; | |
2157 | break; | |
2158 | case L2_HDLC: | |
2159 | s = "HDLC"; | |
2160 | break; | |
2161 | case L2_VOICE: | |
2162 | s = "voice"; | |
2163 | break; | |
2164 | default: | |
2165 | s = "??"; | |
2166 | } | |
9a58a80a | 2167 | seq_printf(m, "[%d]%-13s %s\n", i, "proto2", s); |
7bb5fdc2 | 2168 | } |
9a58a80a | 2169 | return 0; |
7bb5fdc2 TS |
2170 | } |
2171 | ||
9a58a80a AD |
2172 | static int gigaset_proc_open(struct inode *inode, struct file *file) |
2173 | { | |
2174 | return single_open(file, gigaset_proc_show, PDE(inode)->data); | |
2175 | } | |
2176 | ||
2177 | static const struct file_operations gigaset_proc_fops = { | |
2178 | .owner = THIS_MODULE, | |
2179 | .open = gigaset_proc_open, | |
2180 | .read = seq_read, | |
2181 | .llseek = seq_lseek, | |
2182 | .release = single_release, | |
2183 | }; | |
7bb5fdc2 | 2184 | |
7bb5fdc2 | 2185 | /** |
bc35b4e3 | 2186 | * gigaset_isdn_regdev() - register device to LL |
7bb5fdc2 TS |
2187 | * @cs: device descriptor structure. |
2188 | * @isdnid: device name. | |
2189 | * | |
7bb5fdc2 TS |
2190 | * Return value: 1 for success, 0 for failure |
2191 | */ | |
bc35b4e3 | 2192 | int gigaset_isdn_regdev(struct cardstate *cs, const char *isdnid) |
7bb5fdc2 TS |
2193 | { |
2194 | struct gigaset_capi_ctr *iif; | |
2195 | int rc; | |
2196 | ||
7bb5fdc2 TS |
2197 | iif = kmalloc(sizeof(*iif), GFP_KERNEL); |
2198 | if (!iif) { | |
2199 | pr_err("%s: out of memory\n", __func__); | |
2200 | return 0; | |
2201 | } | |
2202 | ||
7bb5fdc2 TS |
2203 | /* prepare controller structure */ |
2204 | iif->ctr.owner = THIS_MODULE; | |
2205 | iif->ctr.driverdata = cs; | |
2206 | strncpy(iif->ctr.name, isdnid, sizeof(iif->ctr.name)); | |
2207 | iif->ctr.driver_name = "gigaset"; | |
e487639d TS |
2208 | iif->ctr.load_firmware = NULL; |
2209 | iif->ctr.reset_ctr = NULL; | |
7bb5fdc2 TS |
2210 | iif->ctr.register_appl = gigaset_register_appl; |
2211 | iif->ctr.release_appl = gigaset_release_appl; | |
2212 | iif->ctr.send_message = gigaset_send_message; | |
2213 | iif->ctr.procinfo = gigaset_procinfo; | |
9a58a80a | 2214 | iif->ctr.proc_fops = &gigaset_proc_fops; |
7bb5fdc2 TS |
2215 | INIT_LIST_HEAD(&iif->appls); |
2216 | skb_queue_head_init(&iif->sendqueue); | |
2217 | atomic_set(&iif->sendqlen, 0); | |
2218 | ||
2219 | /* register controller with CAPI */ | |
2220 | rc = attach_capi_ctr(&iif->ctr); | |
2221 | if (rc) { | |
2222 | pr_err("attach_capi_ctr failed (%d)\n", rc); | |
7bb5fdc2 TS |
2223 | kfree(iif); |
2224 | return 0; | |
2225 | } | |
2226 | ||
2227 | cs->iif = iif; | |
2228 | cs->hw_hdr_len = CAPI_DATA_B3_REQ_LEN; | |
2229 | return 1; | |
2230 | } | |
2231 | ||
2232 | /** | |
bc35b4e3 | 2233 | * gigaset_isdn_unregdev() - unregister device from LL |
7bb5fdc2 | 2234 | * @cs: device descriptor structure. |
7bb5fdc2 | 2235 | */ |
bc35b4e3 | 2236 | void gigaset_isdn_unregdev(struct cardstate *cs) |
7bb5fdc2 TS |
2237 | { |
2238 | struct gigaset_capi_ctr *iif = cs->iif; | |
2239 | ||
2240 | detach_capi_ctr(&iif->ctr); | |
2241 | kfree(iif); | |
2242 | cs->iif = NULL; | |
bc35b4e3 TS |
2243 | } |
2244 | ||
2245 | static struct capi_driver capi_driver_gigaset = { | |
2246 | .name = "gigaset", | |
2247 | .revision = "1.0", | |
2248 | }; | |
2249 | ||
2250 | /** | |
2251 | * gigaset_isdn_regdrv() - register driver to LL | |
2252 | */ | |
2253 | void gigaset_isdn_regdrv(void) | |
2254 | { | |
2255 | pr_info("Kernel CAPI interface\n"); | |
2256 | register_capi_driver(&capi_driver_gigaset); | |
2257 | } | |
2258 | ||
2259 | /** | |
2260 | * gigaset_isdn_unregdrv() - unregister driver from LL | |
2261 | */ | |
2262 | void gigaset_isdn_unregdrv(void) | |
2263 | { | |
7bb5fdc2 TS |
2264 | unregister_capi_driver(&capi_driver_gigaset); |
2265 | } |