diff options
Diffstat (limited to 'drivers/media/dvb/dvb-core/dvb_net.c')
-rw-r--r-- | drivers/media/dvb/dvb-core/dvb_net.c | 1518 |
1 files changed, 1518 insertions, 0 deletions
diff --git a/drivers/media/dvb/dvb-core/dvb_net.c b/drivers/media/dvb/dvb-core/dvb_net.c new file mode 100644 index 00000000000..51752a9ef7a --- /dev/null +++ b/drivers/media/dvb/dvb-core/dvb_net.c | |||
@@ -0,0 +1,1518 @@ | |||
1 | /* | ||
2 | * dvb_net.c | ||
3 | * | ||
4 | * Copyright (C) 2001 Convergence integrated media GmbH | ||
5 | * Ralph Metzler <ralph@convergence.de> | ||
6 | * Copyright (C) 2002 Ralph Metzler <rjkm@metzlerbros.de> | ||
7 | * | ||
8 | * ULE Decapsulation code: | ||
9 | * Copyright (C) 2003, 2004 gcs - Global Communication & Services GmbH. | ||
10 | * and Department of Scientific Computing | ||
11 | * Paris Lodron University of Salzburg. | ||
12 | * Hilmar Linder <hlinder@cosy.sbg.ac.at> | ||
13 | * and Wolfram Stering <wstering@cosy.sbg.ac.at> | ||
14 | * | ||
15 | * ULE Decaps according to RFC 4326. | ||
16 | * | ||
17 | * This program is free software; you can redistribute it and/or | ||
18 | * modify it under the terms of the GNU General Public License | ||
19 | * as published by the Free Software Foundation; either version 2 | ||
20 | * of the License, or (at your option) any later version. | ||
21 | * | ||
22 | * This program is distributed in the hope that it will be useful, | ||
23 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
25 | * GNU General Public License for more details. | ||
26 | * | ||
27 | * You should have received a copy of the GNU General Public License | ||
28 | * along with this program; if not, write to the Free Software | ||
29 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | ||
30 | * Or, point your browser to http://www.gnu.org/copyleft/gpl.html | ||
31 | */ | ||
32 | |||
33 | /* | ||
34 | * ULE ChangeLog: | ||
35 | * Feb 2004: hl/ws v1: Implementing draft-fair-ipdvb-ule-01.txt | ||
36 | * | ||
37 | * Dec 2004: hl/ws v2: Implementing draft-ietf-ipdvb-ule-03.txt: | ||
38 | * ULE Extension header handling. | ||
39 | * Bugreports by Moritz Vieth and Hanno Tersteegen, | ||
40 | * Fraunhofer Institute for Open Communication Systems | ||
41 | * Competence Center for Advanced Satellite Communications. | ||
42 | * Bugfixes and robustness improvements. | ||
43 | * Filtering on dest MAC addresses, if present (D-Bit = 0) | ||
44 | * ULE_DEBUG compile-time option. | ||
45 | * Apr 2006: cp v3: Bugfixes and compliency with RFC 4326 (ULE) by | ||
46 | * Christian Praehauser <cpraehaus@cosy.sbg.ac.at>, | ||
47 | * Paris Lodron University of Salzburg. | ||
48 | */ | ||
49 | |||
50 | /* | ||
51 | * FIXME / TODO (dvb_net.c): | ||
52 | * | ||
53 | * Unloading does not work for 2.6.9 kernels: a refcount doesn't go to zero. | ||
54 | * | ||
55 | */ | ||
56 | |||
57 | #include <linux/module.h> | ||
58 | #include <linux/kernel.h> | ||
59 | #include <linux/netdevice.h> | ||
60 | #include <linux/etherdevice.h> | ||
61 | #include <linux/dvb/net.h> | ||
62 | #include <linux/uio.h> | ||
63 | #include <asm/uaccess.h> | ||
64 | #include <linux/crc32.h> | ||
65 | #include <linux/mutex.h> | ||
66 | #include <linux/sched.h> | ||
67 | |||
68 | #include "dvb_demux.h" | ||
69 | #include "dvb_net.h" | ||
70 | |||
71 | static int dvb_net_debug; | ||
72 | module_param(dvb_net_debug, int, 0444); | ||
73 | MODULE_PARM_DESC(dvb_net_debug, "enable debug messages"); | ||
74 | |||
75 | #define dprintk(x...) do { if (dvb_net_debug) printk(x); } while (0) | ||
76 | |||
77 | |||
78 | static inline __u32 iov_crc32( __u32 c, struct kvec *iov, unsigned int cnt ) | ||
79 | { | ||
80 | unsigned int j; | ||
81 | for (j = 0; j < cnt; j++) | ||
82 | c = crc32_be( c, iov[j].iov_base, iov[j].iov_len ); | ||
83 | return c; | ||
84 | } | ||
85 | |||
86 | |||
87 | #define DVB_NET_MULTICAST_MAX 10 | ||
88 | |||
89 | #undef ULE_DEBUG | ||
90 | |||
91 | #ifdef ULE_DEBUG | ||
92 | |||
93 | #define MAC_ADDR_PRINTFMT "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x" | ||
94 | #define MAX_ADDR_PRINTFMT_ARGS(macap) (macap)[0],(macap)[1],(macap)[2],(macap)[3],(macap)[4],(macap)[5] | ||
95 | |||
96 | #define isprint(c) ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9')) | ||
97 | |||
98 | static void hexdump( const unsigned char *buf, unsigned short len ) | ||
99 | { | ||
100 | char str[80], octet[10]; | ||
101 | int ofs, i, l; | ||
102 | |||
103 | for (ofs = 0; ofs < len; ofs += 16) { | ||
104 | sprintf( str, "%03d: ", ofs ); | ||
105 | |||
106 | for (i = 0; i < 16; i++) { | ||
107 | if ((i + ofs) < len) | ||
108 | sprintf( octet, "%02x ", buf[ofs + i] ); | ||
109 | else | ||
110 | strcpy( octet, " " ); | ||
111 | |||
112 | strcat( str, octet ); | ||
113 | } | ||
114 | strcat( str, " " ); | ||
115 | l = strlen( str ); | ||
116 | |||
117 | for (i = 0; (i < 16) && ((i + ofs) < len); i++) | ||
118 | str[l++] = isprint( buf[ofs + i] ) ? buf[ofs + i] : '.'; | ||
119 | |||
120 | str[l] = '\0'; | ||
121 | printk( KERN_WARNING "%s\n", str ); | ||
122 | } | ||
123 | } | ||
124 | |||
125 | #endif | ||
126 | |||
127 | struct dvb_net_priv { | ||
128 | int in_use; | ||
129 | u16 pid; | ||
130 | struct net_device *net; | ||
131 | struct dvb_net *host; | ||
132 | struct dmx_demux *demux; | ||
133 | struct dmx_section_feed *secfeed; | ||
134 | struct dmx_section_filter *secfilter; | ||
135 | struct dmx_ts_feed *tsfeed; | ||
136 | int multi_num; | ||
137 | struct dmx_section_filter *multi_secfilter[DVB_NET_MULTICAST_MAX]; | ||
138 | unsigned char multi_macs[DVB_NET_MULTICAST_MAX][6]; | ||
139 | int rx_mode; | ||
140 | #define RX_MODE_UNI 0 | ||
141 | #define RX_MODE_MULTI 1 | ||
142 | #define RX_MODE_ALL_MULTI 2 | ||
143 | #define RX_MODE_PROMISC 3 | ||
144 | struct work_struct set_multicast_list_wq; | ||
145 | struct work_struct restart_net_feed_wq; | ||
146 | unsigned char feedtype; /* Either FEED_TYPE_ or FEED_TYPE_ULE */ | ||
147 | int need_pusi; /* Set to 1, if synchronization on PUSI required. */ | ||
148 | unsigned char tscc; /* TS continuity counter after sync on PUSI. */ | ||
149 | struct sk_buff *ule_skb; /* ULE SNDU decodes into this buffer. */ | ||
150 | unsigned char *ule_next_hdr; /* Pointer into skb to next ULE extension header. */ | ||
151 | unsigned short ule_sndu_len; /* ULE SNDU length in bytes, w/o D-Bit. */ | ||
152 | unsigned short ule_sndu_type; /* ULE SNDU type field, complete. */ | ||
153 | unsigned char ule_sndu_type_1; /* ULE SNDU type field, if split across 2 TS cells. */ | ||
154 | unsigned char ule_dbit; /* Whether the DestMAC address present | ||
155 | * or not (bit is set). */ | ||
156 | unsigned char ule_bridged; /* Whether the ULE_BRIDGED extension header was found. */ | ||
157 | int ule_sndu_remain; /* Nr. of bytes still required for current ULE SNDU. */ | ||
158 | unsigned long ts_count; /* Current ts cell counter. */ | ||
159 | struct mutex mutex; | ||
160 | }; | ||
161 | |||
162 | |||
163 | /** | ||
164 | * Determine the packet's protocol ID. The rule here is that we | ||
165 | * assume 802.3 if the type field is short enough to be a length. | ||
166 | * This is normal practice and works for any 'now in use' protocol. | ||
167 | * | ||
168 | * stolen from eth.c out of the linux kernel, hacked for dvb-device | ||
169 | * by Michael Holzt <kju@debian.org> | ||
170 | */ | ||
171 | static __be16 dvb_net_eth_type_trans(struct sk_buff *skb, | ||
172 | struct net_device *dev) | ||
173 | { | ||
174 | struct ethhdr *eth; | ||
175 | unsigned char *rawp; | ||
176 | |||
177 | skb_reset_mac_header(skb); | ||
178 | skb_pull(skb,dev->hard_header_len); | ||
179 | eth = eth_hdr(skb); | ||
180 | |||
181 | if (*eth->h_dest & 1) { | ||
182 | if(memcmp(eth->h_dest,dev->broadcast, ETH_ALEN)==0) | ||
183 | skb->pkt_type=PACKET_BROADCAST; | ||
184 | else | ||
185 | skb->pkt_type=PACKET_MULTICAST; | ||
186 | } | ||
187 | |||
188 | if (ntohs(eth->h_proto) >= 1536) | ||
189 | return eth->h_proto; | ||
190 | |||
191 | rawp = skb->data; | ||
192 | |||
193 | /** | ||
194 | * This is a magic hack to spot IPX packets. Older Novell breaks | ||
195 | * the protocol design and runs IPX over 802.3 without an 802.2 LLC | ||
196 | * layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This | ||
197 | * won't work for fault tolerant netware but does for the rest. | ||
198 | */ | ||
199 | if (*(unsigned short *)rawp == 0xFFFF) | ||
200 | return htons(ETH_P_802_3); | ||
201 | |||
202 | /** | ||
203 | * Real 802.2 LLC | ||
204 | */ | ||
205 | return htons(ETH_P_802_2); | ||
206 | } | ||
207 | |||
208 | #define TS_SZ 188 | ||
209 | #define TS_SYNC 0x47 | ||
210 | #define TS_TEI 0x80 | ||
211 | #define TS_SC 0xC0 | ||
212 | #define TS_PUSI 0x40 | ||
213 | #define TS_AF_A 0x20 | ||
214 | #define TS_AF_D 0x10 | ||
215 | |||
216 | /* ULE Extension Header handlers. */ | ||
217 | |||
218 | #define ULE_TEST 0 | ||
219 | #define ULE_BRIDGED 1 | ||
220 | |||
221 | #define ULE_OPTEXTHDR_PADDING 0 | ||
222 | |||
223 | static int ule_test_sndu( struct dvb_net_priv *p ) | ||
224 | { | ||
225 | return -1; | ||
226 | } | ||
227 | |||
228 | static int ule_bridged_sndu( struct dvb_net_priv *p ) | ||
229 | { | ||
230 | struct ethhdr *hdr = (struct ethhdr*) p->ule_next_hdr; | ||
231 | if(ntohs(hdr->h_proto) < 1536) { | ||
232 | int framelen = p->ule_sndu_len - ((p->ule_next_hdr+sizeof(struct ethhdr)) - p->ule_skb->data); | ||
233 | /* A frame Type < 1536 for a bridged frame, introduces a LLC Length field. */ | ||
234 | if(framelen != ntohs(hdr->h_proto)) { | ||
235 | return -1; | ||
236 | } | ||
237 | } | ||
238 | /* Note: | ||
239 | * From RFC4326: | ||
240 | * "A bridged SNDU is a Mandatory Extension Header of Type 1. | ||
241 | * It must be the final (or only) extension header specified in the header chain of a SNDU." | ||
242 | * The 'ule_bridged' flag will cause the extension header processing loop to terminate. | ||
243 | */ | ||
244 | p->ule_bridged = 1; | ||
245 | return 0; | ||
246 | } | ||
247 | |||
248 | static int ule_exthdr_padding(struct dvb_net_priv *p) | ||
249 | { | ||
250 | return 0; | ||
251 | } | ||
252 | |||
253 | /** Handle ULE extension headers. | ||
254 | * Function is called after a successful CRC32 verification of an ULE SNDU to complete its decoding. | ||
255 | * Returns: >= 0: nr. of bytes consumed by next extension header | ||
256 | * -1: Mandatory extension header that is not recognized or TEST SNDU; discard. | ||
257 | */ | ||
258 | static int handle_one_ule_extension( struct dvb_net_priv *p ) | ||
259 | { | ||
260 | /* Table of mandatory extension header handlers. The header type is the index. */ | ||
261 | static int (*ule_mandatory_ext_handlers[255])( struct dvb_net_priv *p ) = | ||
262 | { [0] = ule_test_sndu, [1] = ule_bridged_sndu, [2] = NULL, }; | ||
263 | |||
264 | /* Table of optional extension header handlers. The header type is the index. */ | ||
265 | static int (*ule_optional_ext_handlers[255])( struct dvb_net_priv *p ) = | ||
266 | { [0] = ule_exthdr_padding, [1] = NULL, }; | ||
267 | |||
268 | int ext_len = 0; | ||
269 | unsigned char hlen = (p->ule_sndu_type & 0x0700) >> 8; | ||
270 | unsigned char htype = p->ule_sndu_type & 0x00FF; | ||
271 | |||
272 | /* Discriminate mandatory and optional extension headers. */ | ||
273 | if (hlen == 0) { | ||
274 | /* Mandatory extension header */ | ||
275 | if (ule_mandatory_ext_handlers[htype]) { | ||
276 | ext_len = ule_mandatory_ext_handlers[htype]( p ); | ||
277 | if(ext_len >= 0) { | ||
278 | p->ule_next_hdr += ext_len; | ||
279 | if (!p->ule_bridged) { | ||
280 | p->ule_sndu_type = ntohs(*(__be16 *)p->ule_next_hdr); | ||
281 | p->ule_next_hdr += 2; | ||
282 | } else { | ||
283 | p->ule_sndu_type = ntohs(*(__be16 *)(p->ule_next_hdr + ((p->ule_dbit ? 2 : 3) * ETH_ALEN))); | ||
284 | /* This assures the extension handling loop will terminate. */ | ||
285 | } | ||
286 | } | ||
287 | // else: extension handler failed or SNDU should be discarded | ||
288 | } else | ||
289 | ext_len = -1; /* SNDU has to be discarded. */ | ||
290 | } else { | ||
291 | /* Optional extension header. Calculate the length. */ | ||
292 | ext_len = hlen << 1; | ||
293 | /* Process the optional extension header according to its type. */ | ||
294 | if (ule_optional_ext_handlers[htype]) | ||
295 | (void)ule_optional_ext_handlers[htype]( p ); | ||
296 | p->ule_next_hdr += ext_len; | ||
297 | p->ule_sndu_type = ntohs( *(__be16 *)(p->ule_next_hdr-2) ); | ||
298 | /* | ||
299 | * note: the length of the next header type is included in the | ||
300 | * length of THIS optional extension header | ||
301 | */ | ||
302 | } | ||
303 | |||
304 | return ext_len; | ||
305 | } | ||
306 | |||
307 | static int handle_ule_extensions( struct dvb_net_priv *p ) | ||
308 | { | ||
309 | int total_ext_len = 0, l; | ||
310 | |||
311 | p->ule_next_hdr = p->ule_skb->data; | ||
312 | do { | ||
313 | l = handle_one_ule_extension( p ); | ||
314 | if (l < 0) | ||
315 | return l; /* Stop extension header processing and discard SNDU. */ | ||
316 | total_ext_len += l; | ||
317 | #ifdef ULE_DEBUG | ||
318 | dprintk("handle_ule_extensions: ule_next_hdr=%p, ule_sndu_type=%i, " | ||
319 | "l=%i, total_ext_len=%i\n", p->ule_next_hdr, | ||
320 | (int) p->ule_sndu_type, l, total_ext_len); | ||
321 | #endif | ||
322 | |||
323 | } while (p->ule_sndu_type < 1536); | ||
324 | |||
325 | return total_ext_len; | ||
326 | } | ||
327 | |||
328 | |||
329 | /** Prepare for a new ULE SNDU: reset the decoder state. */ | ||
330 | static inline void reset_ule( struct dvb_net_priv *p ) | ||
331 | { | ||
332 | p->ule_skb = NULL; | ||
333 | p->ule_next_hdr = NULL; | ||
334 | p->ule_sndu_len = 0; | ||
335 | p->ule_sndu_type = 0; | ||
336 | p->ule_sndu_type_1 = 0; | ||
337 | p->ule_sndu_remain = 0; | ||
338 | p->ule_dbit = 0xFF; | ||
339 | p->ule_bridged = 0; | ||
340 | } | ||
341 | |||
342 | /** | ||
343 | * Decode ULE SNDUs according to draft-ietf-ipdvb-ule-03.txt from a sequence of | ||
344 | * TS cells of a single PID. | ||
345 | */ | ||
346 | static void dvb_net_ule( struct net_device *dev, const u8 *buf, size_t buf_len ) | ||
347 | { | ||
348 | struct dvb_net_priv *priv = netdev_priv(dev); | ||
349 | unsigned long skipped = 0L; | ||
350 | const u8 *ts, *ts_end, *from_where = NULL; | ||
351 | u8 ts_remain = 0, how_much = 0, new_ts = 1; | ||
352 | struct ethhdr *ethh = NULL; | ||
353 | bool error = false; | ||
354 | |||
355 | #ifdef ULE_DEBUG | ||
356 | /* The code inside ULE_DEBUG keeps a history of the last 100 TS cells processed. */ | ||
357 | static unsigned char ule_hist[100*TS_SZ]; | ||
358 | static unsigned char *ule_where = ule_hist, ule_dump; | ||
359 | #endif | ||
360 | |||
361 | /* For all TS cells in current buffer. | ||
362 | * Appearently, we are called for every single TS cell. | ||
363 | */ | ||
364 | for (ts = buf, ts_end = buf + buf_len; ts < ts_end; /* no default incr. */ ) { | ||
365 | |||
366 | if (new_ts) { | ||
367 | /* We are about to process a new TS cell. */ | ||
368 | |||
369 | #ifdef ULE_DEBUG | ||
370 | if (ule_where >= &ule_hist[100*TS_SZ]) ule_where = ule_hist; | ||
371 | memcpy( ule_where, ts, TS_SZ ); | ||
372 | if (ule_dump) { | ||
373 | hexdump( ule_where, TS_SZ ); | ||
374 | ule_dump = 0; | ||
375 | } | ||
376 | ule_where += TS_SZ; | ||
377 | #endif | ||
378 | |||
379 | /* Check TS error conditions: sync_byte, transport_error_indicator, scrambling_control . */ | ||
380 | if ((ts[0] != TS_SYNC) || (ts[1] & TS_TEI) || ((ts[3] & TS_SC) != 0)) { | ||
381 | printk(KERN_WARNING "%lu: Invalid TS cell: SYNC %#x, TEI %u, SC %#x.\n", | ||
382 | priv->ts_count, ts[0], ts[1] & TS_TEI >> 7, ts[3] & 0xC0 >> 6); | ||
383 | |||
384 | /* Drop partly decoded SNDU, reset state, resync on PUSI. */ | ||
385 | if (priv->ule_skb) { | ||
386 | dev_kfree_skb( priv->ule_skb ); | ||
387 | /* Prepare for next SNDU. */ | ||
388 | dev->stats.rx_errors++; | ||
389 | dev->stats.rx_frame_errors++; | ||
390 | } | ||
391 | reset_ule(priv); | ||
392 | priv->need_pusi = 1; | ||
393 | |||
394 | /* Continue with next TS cell. */ | ||
395 | ts += TS_SZ; | ||
396 | priv->ts_count++; | ||
397 | continue; | ||
398 | } | ||
399 | |||
400 | ts_remain = 184; | ||
401 | from_where = ts + 4; | ||
402 | } | ||
403 | /* Synchronize on PUSI, if required. */ | ||
404 | if (priv->need_pusi) { | ||
405 | if (ts[1] & TS_PUSI) { | ||
406 | /* Find beginning of first ULE SNDU in current TS cell. */ | ||
407 | /* Synchronize continuity counter. */ | ||
408 | priv->tscc = ts[3] & 0x0F; | ||
409 | /* There is a pointer field here. */ | ||
410 | if (ts[4] > ts_remain) { | ||
411 | printk(KERN_ERR "%lu: Invalid ULE packet " | ||
412 | "(pointer field %d)\n", priv->ts_count, ts[4]); | ||
413 | ts += TS_SZ; | ||
414 | priv->ts_count++; | ||
415 | continue; | ||
416 | } | ||
417 | /* Skip to destination of pointer field. */ | ||
418 | from_where = &ts[5] + ts[4]; | ||
419 | ts_remain -= 1 + ts[4]; | ||
420 | skipped = 0; | ||
421 | } else { | ||
422 | skipped++; | ||
423 | ts += TS_SZ; | ||
424 | priv->ts_count++; | ||
425 | continue; | ||
426 | } | ||
427 | } | ||
428 | |||
429 | if (new_ts) { | ||
430 | /* Check continuity counter. */ | ||
431 | if ((ts[3] & 0x0F) == priv->tscc) | ||
432 | priv->tscc = (priv->tscc + 1) & 0x0F; | ||
433 | else { | ||
434 | /* TS discontinuity handling: */ | ||
435 | printk(KERN_WARNING "%lu: TS discontinuity: got %#x, " | ||
436 | "expected %#x.\n", priv->ts_count, ts[3] & 0x0F, priv->tscc); | ||
437 | /* Drop partly decoded SNDU, reset state, resync on PUSI. */ | ||
438 | if (priv->ule_skb) { | ||
439 | dev_kfree_skb( priv->ule_skb ); | ||
440 | /* Prepare for next SNDU. */ | ||
441 | // reset_ule(priv); moved to below. | ||
442 | dev->stats.rx_errors++; | ||
443 | dev->stats.rx_frame_errors++; | ||
444 | } | ||
445 | reset_ule(priv); | ||
446 | /* skip to next PUSI. */ | ||
447 | priv->need_pusi = 1; | ||
448 | continue; | ||
449 | } | ||
450 | /* If we still have an incomplete payload, but PUSI is | ||
451 | * set; some TS cells are missing. | ||
452 | * This is only possible here, if we missed exactly 16 TS | ||
453 | * cells (continuity counter wrap). */ | ||
454 | if (ts[1] & TS_PUSI) { | ||
455 | if (! priv->need_pusi) { | ||
456 | if (!(*from_where < (ts_remain-1)) || *from_where != priv->ule_sndu_remain) { | ||
457 | /* Pointer field is invalid. Drop this TS cell and any started ULE SNDU. */ | ||
458 | printk(KERN_WARNING "%lu: Invalid pointer " | ||
459 | "field: %u.\n", priv->ts_count, *from_where); | ||
460 | |||
461 | /* Drop partly decoded SNDU, reset state, resync on PUSI. */ | ||
462 | if (priv->ule_skb) { | ||
463 | error = true; | ||
464 | dev_kfree_skb(priv->ule_skb); | ||
465 | } | ||
466 | |||
467 | if (error || priv->ule_sndu_remain) { | ||
468 | dev->stats.rx_errors++; | ||
469 | dev->stats.rx_frame_errors++; | ||
470 | error = false; | ||
471 | } | ||
472 | |||
473 | reset_ule(priv); | ||
474 | priv->need_pusi = 1; | ||
475 | continue; | ||
476 | } | ||
477 | /* Skip pointer field (we're processing a | ||
478 | * packed payload). */ | ||
479 | from_where += 1; | ||
480 | ts_remain -= 1; | ||
481 | } else | ||
482 | priv->need_pusi = 0; | ||
483 | |||
484 | if (priv->ule_sndu_remain > 183) { | ||
485 | /* Current SNDU lacks more data than there could be available in the | ||
486 | * current TS cell. */ | ||
487 | dev->stats.rx_errors++; | ||
488 | dev->stats.rx_length_errors++; | ||
489 | printk(KERN_WARNING "%lu: Expected %d more SNDU bytes, but " | ||
490 | "got PUSI (pf %d, ts_remain %d). Flushing incomplete payload.\n", | ||
491 | priv->ts_count, priv->ule_sndu_remain, ts[4], ts_remain); | ||
492 | dev_kfree_skb(priv->ule_skb); | ||
493 | /* Prepare for next SNDU. */ | ||
494 | reset_ule(priv); | ||
495 | /* Resync: go to where pointer field points to: start of next ULE SNDU. */ | ||
496 | from_where += ts[4]; | ||
497 | ts_remain -= ts[4]; | ||
498 | } | ||
499 | } | ||
500 | } | ||
501 | |||
502 | /* Check if new payload needs to be started. */ | ||
503 | if (priv->ule_skb == NULL) { | ||
504 | /* Start a new payload with skb. | ||
505 | * Find ULE header. It is only guaranteed that the | ||
506 | * length field (2 bytes) is contained in the current | ||
507 | * TS. | ||
508 | * Check ts_remain has to be >= 2 here. */ | ||
509 | if (ts_remain < 2) { | ||
510 | printk(KERN_WARNING "Invalid payload packing: only %d " | ||
511 | "bytes left in TS. Resyncing.\n", ts_remain); | ||
512 | priv->ule_sndu_len = 0; | ||
513 | priv->need_pusi = 1; | ||
514 | ts += TS_SZ; | ||
515 | continue; | ||
516 | } | ||
517 | |||
518 | if (! priv->ule_sndu_len) { | ||
519 | /* Got at least two bytes, thus extrace the SNDU length. */ | ||
520 | priv->ule_sndu_len = from_where[0] << 8 | from_where[1]; | ||
521 | if (priv->ule_sndu_len & 0x8000) { | ||
522 | /* D-Bit is set: no dest mac present. */ | ||
523 | priv->ule_sndu_len &= 0x7FFF; | ||
524 | priv->ule_dbit = 1; | ||
525 | } else | ||
526 | priv->ule_dbit = 0; | ||
527 | |||
528 | if (priv->ule_sndu_len < 5) { | ||
529 | printk(KERN_WARNING "%lu: Invalid ULE SNDU length %u. " | ||
530 | "Resyncing.\n", priv->ts_count, priv->ule_sndu_len); | ||
531 | dev->stats.rx_errors++; | ||
532 | dev->stats.rx_length_errors++; | ||
533 | priv->ule_sndu_len = 0; | ||
534 | priv->need_pusi = 1; | ||
535 | new_ts = 1; | ||
536 | ts += TS_SZ; | ||
537 | priv->ts_count++; | ||
538 | continue; | ||
539 | } | ||
540 | ts_remain -= 2; /* consume the 2 bytes SNDU length. */ | ||
541 | from_where += 2; | ||
542 | } | ||
543 | |||
544 | priv->ule_sndu_remain = priv->ule_sndu_len + 2; | ||
545 | /* | ||
546 | * State of current TS: | ||
547 | * ts_remain (remaining bytes in the current TS cell) | ||
548 | * 0 ule_type is not available now, we need the next TS cell | ||
549 | * 1 the first byte of the ule_type is present | ||
550 | * >=2 full ULE header present, maybe some payload data as well. | ||
551 | */ | ||
552 | switch (ts_remain) { | ||
553 | case 1: | ||
554 | priv->ule_sndu_remain--; | ||
555 | priv->ule_sndu_type = from_where[0] << 8; | ||
556 | priv->ule_sndu_type_1 = 1; /* first byte of ule_type is set. */ | ||
557 | ts_remain -= 1; from_where += 1; | ||
558 | /* Continue w/ next TS. */ | ||
559 | case 0: | ||
560 | new_ts = 1; | ||
561 | ts += TS_SZ; | ||
562 | priv->ts_count++; | ||
563 | continue; | ||
564 | |||
565 | default: /* complete ULE header is present in current TS. */ | ||
566 | /* Extract ULE type field. */ | ||
567 | if (priv->ule_sndu_type_1) { | ||
568 | priv->ule_sndu_type_1 = 0; | ||
569 | priv->ule_sndu_type |= from_where[0]; | ||
570 | from_where += 1; /* points to payload start. */ | ||
571 | ts_remain -= 1; | ||
572 | } else { | ||
573 | /* Complete type is present in new TS. */ | ||
574 | priv->ule_sndu_type = from_where[0] << 8 | from_where[1]; | ||
575 | from_where += 2; /* points to payload start. */ | ||
576 | ts_remain -= 2; | ||
577 | } | ||
578 | break; | ||
579 | } | ||
580 | |||
581 | /* Allocate the skb (decoder target buffer) with the correct size, as follows: | ||
582 | * prepare for the largest case: bridged SNDU with MAC address (dbit = 0). */ | ||
583 | priv->ule_skb = dev_alloc_skb( priv->ule_sndu_len + ETH_HLEN + ETH_ALEN ); | ||
584 | if (priv->ule_skb == NULL) { | ||
585 | printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", | ||
586 | dev->name); | ||
587 | dev->stats.rx_dropped++; | ||
588 | return; | ||
589 | } | ||
590 | |||
591 | /* This includes the CRC32 _and_ dest mac, if !dbit. */ | ||
592 | priv->ule_sndu_remain = priv->ule_sndu_len; | ||
593 | priv->ule_skb->dev = dev; | ||
594 | /* Leave space for Ethernet or bridged SNDU header (eth hdr plus one MAC addr). */ | ||
595 | skb_reserve( priv->ule_skb, ETH_HLEN + ETH_ALEN ); | ||
596 | } | ||
597 | |||
598 | /* Copy data into our current skb. */ | ||
599 | how_much = min(priv->ule_sndu_remain, (int)ts_remain); | ||
600 | memcpy(skb_put(priv->ule_skb, how_much), from_where, how_much); | ||
601 | priv->ule_sndu_remain -= how_much; | ||
602 | ts_remain -= how_much; | ||
603 | from_where += how_much; | ||
604 | |||
605 | /* Check for complete payload. */ | ||
606 | if (priv->ule_sndu_remain <= 0) { | ||
607 | /* Check CRC32, we've got it in our skb already. */ | ||
608 | __be16 ulen = htons(priv->ule_sndu_len); | ||
609 | __be16 utype = htons(priv->ule_sndu_type); | ||
610 | const u8 *tail; | ||
611 | struct kvec iov[3] = { | ||
612 | { &ulen, sizeof ulen }, | ||
613 | { &utype, sizeof utype }, | ||
614 | { priv->ule_skb->data, priv->ule_skb->len - 4 } | ||
615 | }; | ||
616 | u32 ule_crc = ~0L, expected_crc; | ||
617 | if (priv->ule_dbit) { | ||
618 | /* Set D-bit for CRC32 verification, | ||
619 | * if it was set originally. */ | ||
620 | ulen |= htons(0x8000); | ||
621 | } | ||
622 | |||
623 | ule_crc = iov_crc32(ule_crc, iov, 3); | ||
624 | tail = skb_tail_pointer(priv->ule_skb); | ||
625 | expected_crc = *(tail - 4) << 24 | | ||
626 | *(tail - 3) << 16 | | ||
627 | *(tail - 2) << 8 | | ||
628 | *(tail - 1); | ||
629 | if (ule_crc != expected_crc) { | ||
630 | printk(KERN_WARNING "%lu: CRC32 check FAILED: %08x / %08x, SNDU len %d type %#x, ts_remain %d, next 2: %x.\n", | ||
631 | priv->ts_count, ule_crc, expected_crc, priv->ule_sndu_len, priv->ule_sndu_type, ts_remain, ts_remain > 2 ? *(unsigned short *)from_where : 0); | ||
632 | |||
633 | #ifdef ULE_DEBUG | ||
634 | hexdump( iov[0].iov_base, iov[0].iov_len ); | ||
635 | hexdump( iov[1].iov_base, iov[1].iov_len ); | ||
636 | hexdump( iov[2].iov_base, iov[2].iov_len ); | ||
637 | |||
638 | if (ule_where == ule_hist) { | ||
639 | hexdump( &ule_hist[98*TS_SZ], TS_SZ ); | ||
640 | hexdump( &ule_hist[99*TS_SZ], TS_SZ ); | ||
641 | } else if (ule_where == &ule_hist[TS_SZ]) { | ||
642 | hexdump( &ule_hist[99*TS_SZ], TS_SZ ); | ||
643 | hexdump( ule_hist, TS_SZ ); | ||
644 | } else { | ||
645 | hexdump( ule_where - TS_SZ - TS_SZ, TS_SZ ); | ||
646 | hexdump( ule_where - TS_SZ, TS_SZ ); | ||
647 | } | ||
648 | ule_dump = 1; | ||
649 | #endif | ||
650 | |||
651 | dev->stats.rx_errors++; | ||
652 | dev->stats.rx_crc_errors++; | ||
653 | dev_kfree_skb(priv->ule_skb); | ||
654 | } else { | ||
655 | /* CRC32 verified OK. */ | ||
656 | u8 dest_addr[ETH_ALEN]; | ||
657 | static const u8 bc_addr[ETH_ALEN] = | ||
658 | { [ 0 ... ETH_ALEN-1] = 0xff }; | ||
659 | |||
660 | /* CRC32 was OK. Remove it from skb. */ | ||
661 | priv->ule_skb->tail -= 4; | ||
662 | priv->ule_skb->len -= 4; | ||
663 | |||
664 | if (!priv->ule_dbit) { | ||
665 | /* | ||
666 | * The destination MAC address is the | ||
667 | * next data in the skb. It comes | ||
668 | * before any extension headers. | ||
669 | * | ||
670 | * Check if the payload of this SNDU | ||
671 | * should be passed up the stack. | ||
672 | */ | ||
673 | register int drop = 0; | ||
674 | if (priv->rx_mode != RX_MODE_PROMISC) { | ||
675 | if (priv->ule_skb->data[0] & 0x01) { | ||
676 | /* multicast or broadcast */ | ||
677 | if (memcmp(priv->ule_skb->data, bc_addr, ETH_ALEN)) { | ||
678 | /* multicast */ | ||
679 | if (priv->rx_mode == RX_MODE_MULTI) { | ||
680 | int i; | ||
681 | for(i = 0; i < priv->multi_num && memcmp(priv->ule_skb->data, priv->multi_macs[i], ETH_ALEN); i++) | ||
682 | ; | ||
683 | if (i == priv->multi_num) | ||
684 | drop = 1; | ||
685 | } else if (priv->rx_mode != RX_MODE_ALL_MULTI) | ||
686 | drop = 1; /* no broadcast; */ | ||
687 | /* else: all multicast mode: accept all multicast packets */ | ||
688 | } | ||
689 | /* else: broadcast */ | ||
690 | } | ||
691 | else if (memcmp(priv->ule_skb->data, dev->dev_addr, ETH_ALEN)) | ||
692 | drop = 1; | ||
693 | /* else: destination address matches the MAC address of our receiver device */ | ||
694 | } | ||
695 | /* else: promiscuous mode; pass everything up the stack */ | ||
696 | |||
697 | if (drop) { | ||
698 | #ifdef ULE_DEBUG | ||
699 | dprintk("Dropping SNDU: MAC destination address does not match: dest addr: "MAC_ADDR_PRINTFMT", dev addr: "MAC_ADDR_PRINTFMT"\n", | ||
700 | MAX_ADDR_PRINTFMT_ARGS(priv->ule_skb->data), MAX_ADDR_PRINTFMT_ARGS(dev->dev_addr)); | ||
701 | #endif | ||
702 | dev_kfree_skb(priv->ule_skb); | ||
703 | goto sndu_done; | ||
704 | } | ||
705 | else | ||
706 | { | ||
707 | skb_copy_from_linear_data(priv->ule_skb, | ||
708 | dest_addr, | ||
709 | ETH_ALEN); | ||
710 | skb_pull(priv->ule_skb, ETH_ALEN); | ||
711 | } | ||
712 | } | ||
713 | |||
714 | /* Handle ULE Extension Headers. */ | ||
715 | if (priv->ule_sndu_type < 1536) { | ||
716 | /* There is an extension header. Handle it accordingly. */ | ||
717 | int l = handle_ule_extensions(priv); | ||
718 | if (l < 0) { | ||
719 | /* Mandatory extension header unknown or TEST SNDU. Drop it. */ | ||
720 | // printk( KERN_WARNING "Dropping SNDU, extension headers.\n" ); | ||
721 | dev_kfree_skb(priv->ule_skb); | ||
722 | goto sndu_done; | ||
723 | } | ||
724 | skb_pull(priv->ule_skb, l); | ||
725 | } | ||
726 | |||
727 | /* | ||
728 | * Construct/assure correct ethernet header. | ||
729 | * Note: in bridged mode (priv->ule_bridged != | ||
730 | * 0) we already have the (original) ethernet | ||
731 | * header at the start of the payload (after | ||
732 | * optional dest. address and any extension | ||
733 | * headers). | ||
734 | */ | ||
735 | |||
736 | if (!priv->ule_bridged) { | ||
737 | skb_push(priv->ule_skb, ETH_HLEN); | ||
738 | ethh = (struct ethhdr *)priv->ule_skb->data; | ||
739 | if (!priv->ule_dbit) { | ||
740 | /* dest_addr buffer is only valid if priv->ule_dbit == 0 */ | ||
741 | memcpy(ethh->h_dest, dest_addr, ETH_ALEN); | ||
742 | memset(ethh->h_source, 0, ETH_ALEN); | ||
743 | } | ||
744 | else /* zeroize source and dest */ | ||
745 | memset( ethh, 0, ETH_ALEN*2 ); | ||
746 | |||
747 | ethh->h_proto = htons(priv->ule_sndu_type); | ||
748 | } | ||
749 | /* else: skb is in correct state; nothing to do. */ | ||
750 | priv->ule_bridged = 0; | ||
751 | |||
752 | /* Stuff into kernel's protocol stack. */ | ||
753 | priv->ule_skb->protocol = dvb_net_eth_type_trans(priv->ule_skb, dev); | ||
754 | /* If D-bit is set (i.e. destination MAC address not present), | ||
755 | * receive the packet anyhow. */ | ||
756 | /* if (priv->ule_dbit && skb->pkt_type == PACKET_OTHERHOST) | ||
757 | priv->ule_skb->pkt_type = PACKET_HOST; */ | ||
758 | dev->stats.rx_packets++; | ||
759 | dev->stats.rx_bytes += priv->ule_skb->len; | ||
760 | netif_rx(priv->ule_skb); | ||
761 | } | ||
762 | sndu_done: | ||
763 | /* Prepare for next SNDU. */ | ||
764 | reset_ule(priv); | ||
765 | } | ||
766 | |||
767 | /* More data in current TS (look at the bytes following the CRC32)? */ | ||
768 | if (ts_remain >= 2 && *((unsigned short *)from_where) != 0xFFFF) { | ||
769 | /* Next ULE SNDU starts right there. */ | ||
770 | new_ts = 0; | ||
771 | priv->ule_skb = NULL; | ||
772 | priv->ule_sndu_type_1 = 0; | ||
773 | priv->ule_sndu_len = 0; | ||
774 | // printk(KERN_WARNING "More data in current TS: [%#x %#x %#x %#x]\n", | ||
775 | // *(from_where + 0), *(from_where + 1), | ||
776 | // *(from_where + 2), *(from_where + 3)); | ||
777 | // printk(KERN_WARNING "ts @ %p, stopped @ %p:\n", ts, from_where + 0); | ||
778 | // hexdump(ts, 188); | ||
779 | } else { | ||
780 | new_ts = 1; | ||
781 | ts += TS_SZ; | ||
782 | priv->ts_count++; | ||
783 | if (priv->ule_skb == NULL) { | ||
784 | priv->need_pusi = 1; | ||
785 | priv->ule_sndu_type_1 = 0; | ||
786 | priv->ule_sndu_len = 0; | ||
787 | } | ||
788 | } | ||
789 | } /* for all available TS cells */ | ||
790 | } | ||
791 | |||
792 | static int dvb_net_ts_callback(const u8 *buffer1, size_t buffer1_len, | ||
793 | const u8 *buffer2, size_t buffer2_len, | ||
794 | struct dmx_ts_feed *feed, enum dmx_success success) | ||
795 | { | ||
796 | struct net_device *dev = feed->priv; | ||
797 | |||
798 | if (buffer2) | ||
799 | printk(KERN_WARNING "buffer2 not NULL: %p.\n", buffer2); | ||
800 | if (buffer1_len > 32768) | ||
801 | printk(KERN_WARNING "length > 32k: %zu.\n", buffer1_len); | ||
802 | /* printk("TS callback: %u bytes, %u TS cells @ %p.\n", | ||
803 | buffer1_len, buffer1_len / TS_SZ, buffer1); */ | ||
804 | dvb_net_ule(dev, buffer1, buffer1_len); | ||
805 | return 0; | ||
806 | } | ||
807 | |||
808 | |||
809 | static void dvb_net_sec(struct net_device *dev, | ||
810 | const u8 *pkt, int pkt_len) | ||
811 | { | ||
812 | u8 *eth; | ||
813 | struct sk_buff *skb; | ||
814 | struct net_device_stats *stats = &dev->stats; | ||
815 | int snap = 0; | ||
816 | |||
817 | /* note: pkt_len includes a 32bit checksum */ | ||
818 | if (pkt_len < 16) { | ||
819 | printk("%s: IP/MPE packet length = %d too small.\n", | ||
820 | dev->name, pkt_len); | ||
821 | stats->rx_errors++; | ||
822 | stats->rx_length_errors++; | ||
823 | return; | ||
824 | } | ||
825 | /* it seems some ISPs manage to screw up here, so we have to | ||
826 | * relax the error checks... */ | ||
827 | #if 0 | ||
828 | if ((pkt[5] & 0xfd) != 0xc1) { | ||
829 | /* drop scrambled or broken packets */ | ||
830 | #else | ||
831 | if ((pkt[5] & 0x3c) != 0x00) { | ||
832 | /* drop scrambled */ | ||
833 | #endif | ||
834 | stats->rx_errors++; | ||
835 | stats->rx_crc_errors++; | ||
836 | return; | ||
837 | } | ||
838 | if (pkt[5] & 0x02) { | ||
839 | /* handle LLC/SNAP, see rfc-1042 */ | ||
840 | if (pkt_len < 24 || memcmp(&pkt[12], "\xaa\xaa\x03\0\0\0", 6)) { | ||
841 | stats->rx_dropped++; | ||
842 | return; | ||
843 | } | ||
844 | snap = 8; | ||
845 | } | ||
846 | if (pkt[7]) { | ||
847 | /* FIXME: assemble datagram from multiple sections */ | ||
848 | stats->rx_errors++; | ||
849 | stats->rx_frame_errors++; | ||
850 | return; | ||
851 | } | ||
852 | |||
853 | /* we have 14 byte ethernet header (ip header follows); | ||
854 | * 12 byte MPE header; 4 byte checksum; + 2 byte alignment, 8 byte LLC/SNAP | ||
855 | */ | ||
856 | if (!(skb = dev_alloc_skb(pkt_len - 4 - 12 + 14 + 2 - snap))) { | ||
857 | //printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name); | ||
858 | stats->rx_dropped++; | ||
859 | return; | ||
860 | } | ||
861 | skb_reserve(skb, 2); /* longword align L3 header */ | ||
862 | skb->dev = dev; | ||
863 | |||
864 | /* copy L3 payload */ | ||
865 | eth = (u8 *) skb_put(skb, pkt_len - 12 - 4 + 14 - snap); | ||
866 | memcpy(eth + 14, pkt + 12 + snap, pkt_len - 12 - 4 - snap); | ||
867 | |||
868 | /* create ethernet header: */ | ||
869 | eth[0]=pkt[0x0b]; | ||
870 | eth[1]=pkt[0x0a]; | ||
871 | eth[2]=pkt[0x09]; | ||
872 | eth[3]=pkt[0x08]; | ||
873 | eth[4]=pkt[0x04]; | ||
874 | eth[5]=pkt[0x03]; | ||
875 | |||
876 | eth[6]=eth[7]=eth[8]=eth[9]=eth[10]=eth[11]=0; | ||
877 | |||
878 | if (snap) { | ||
879 | eth[12] = pkt[18]; | ||
880 | eth[13] = pkt[19]; | ||
881 | } else { | ||
882 | /* protocol numbers are from rfc-1700 or | ||
883 | * http://www.iana.org/assignments/ethernet-numbers | ||
884 | */ | ||
885 | if (pkt[12] >> 4 == 6) { /* version field from IP header */ | ||
886 | eth[12] = 0x86; /* IPv6 */ | ||
887 | eth[13] = 0xdd; | ||
888 | } else { | ||
889 | eth[12] = 0x08; /* IPv4 */ | ||
890 | eth[13] = 0x00; | ||
891 | } | ||
892 | } | ||
893 | |||
894 | skb->protocol = dvb_net_eth_type_trans(skb, dev); | ||
895 | |||
896 | stats->rx_packets++; | ||
897 | stats->rx_bytes+=skb->len; | ||
898 | netif_rx(skb); | ||
899 | } | ||
900 | |||
901 | static int dvb_net_sec_callback(const u8 *buffer1, size_t buffer1_len, | ||
902 | const u8 *buffer2, size_t buffer2_len, | ||
903 | struct dmx_section_filter *filter, | ||
904 | enum dmx_success success) | ||
905 | { | ||
906 | struct net_device *dev = filter->priv; | ||
907 | |||
908 | /** | ||
909 | * we rely on the DVB API definition where exactly one complete | ||
910 | * section is delivered in buffer1 | ||
911 | */ | ||
912 | dvb_net_sec (dev, buffer1, buffer1_len); | ||
913 | return 0; | ||
914 | } | ||
915 | |||
916 | static int dvb_net_tx(struct sk_buff *skb, struct net_device *dev) | ||
917 | { | ||
918 | dev_kfree_skb(skb); | ||
919 | return NETDEV_TX_OK; | ||
920 | } | ||
921 | |||
922 | static u8 mask_normal[6]={0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; | ||
923 | static u8 mask_allmulti[6]={0xff, 0xff, 0xff, 0x00, 0x00, 0x00}; | ||
924 | static u8 mac_allmulti[6]={0x01, 0x00, 0x5e, 0x00, 0x00, 0x00}; | ||
925 | static u8 mask_promisc[6]={0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; | ||
926 | |||
927 | static int dvb_net_filter_sec_set(struct net_device *dev, | ||
928 | struct dmx_section_filter **secfilter, | ||
929 | u8 *mac, u8 *mac_mask) | ||
930 | { | ||
931 | struct dvb_net_priv *priv = netdev_priv(dev); | ||
932 | int ret; | ||
933 | |||
934 | *secfilter=NULL; | ||
935 | ret = priv->secfeed->allocate_filter(priv->secfeed, secfilter); | ||
936 | if (ret<0) { | ||
937 | printk("%s: could not get filter\n", dev->name); | ||
938 | return ret; | ||
939 | } | ||
940 | |||
941 | (*secfilter)->priv=(void *) dev; | ||
942 | |||
943 | memset((*secfilter)->filter_value, 0x00, DMX_MAX_FILTER_SIZE); | ||
944 | memset((*secfilter)->filter_mask, 0x00, DMX_MAX_FILTER_SIZE); | ||
945 | memset((*secfilter)->filter_mode, 0xff, DMX_MAX_FILTER_SIZE); | ||
946 | |||
947 | (*secfilter)->filter_value[0]=0x3e; | ||
948 | (*secfilter)->filter_value[3]=mac[5]; | ||
949 | (*secfilter)->filter_value[4]=mac[4]; | ||
950 | (*secfilter)->filter_value[8]=mac[3]; | ||
951 | (*secfilter)->filter_value[9]=mac[2]; | ||
952 | (*secfilter)->filter_value[10]=mac[1]; | ||
953 | (*secfilter)->filter_value[11]=mac[0]; | ||
954 | |||
955 | (*secfilter)->filter_mask[0] = 0xff; | ||
956 | (*secfilter)->filter_mask[3] = mac_mask[5]; | ||
957 | (*secfilter)->filter_mask[4] = mac_mask[4]; | ||
958 | (*secfilter)->filter_mask[8] = mac_mask[3]; | ||
959 | (*secfilter)->filter_mask[9] = mac_mask[2]; | ||
960 | (*secfilter)->filter_mask[10] = mac_mask[1]; | ||
961 | (*secfilter)->filter_mask[11]=mac_mask[0]; | ||
962 | |||
963 | dprintk("%s: filter mac=%pM\n", dev->name, mac); | ||
964 | dprintk("%s: filter mask=%pM\n", dev->name, mac_mask); | ||
965 | |||
966 | return 0; | ||
967 | } | ||
968 | |||
969 | static int dvb_net_feed_start(struct net_device *dev) | ||
970 | { | ||
971 | int ret = 0, i; | ||
972 | struct dvb_net_priv *priv = netdev_priv(dev); | ||
973 | struct dmx_demux *demux = priv->demux; | ||
974 | unsigned char *mac = (unsigned char *) dev->dev_addr; | ||
975 | |||
976 | dprintk("%s: rx_mode %i\n", __func__, priv->rx_mode); | ||
977 | mutex_lock(&priv->mutex); | ||
978 | if (priv->tsfeed || priv->secfeed || priv->secfilter || priv->multi_secfilter[0]) | ||
979 | printk("%s: BUG %d\n", __func__, __LINE__); | ||
980 | |||
981 | priv->secfeed=NULL; | ||
982 | priv->secfilter=NULL; | ||
983 | priv->tsfeed = NULL; | ||
984 | |||
985 | if (priv->feedtype == DVB_NET_FEEDTYPE_MPE) { | ||
986 | dprintk("%s: alloc secfeed\n", __func__); | ||
987 | ret=demux->allocate_section_feed(demux, &priv->secfeed, | ||
988 | dvb_net_sec_callback); | ||
989 | if (ret<0) { | ||
990 | printk("%s: could not allocate section feed\n", dev->name); | ||
991 | goto error; | ||
992 | } | ||
993 | |||
994 | ret = priv->secfeed->set(priv->secfeed, priv->pid, 32768, 1); | ||
995 | |||
996 | if (ret<0) { | ||
997 | printk("%s: could not set section feed\n", dev->name); | ||
998 | priv->demux->release_section_feed(priv->demux, priv->secfeed); | ||
999 | priv->secfeed=NULL; | ||
1000 | goto error; | ||
1001 | } | ||
1002 | |||
1003 | if (priv->rx_mode != RX_MODE_PROMISC) { | ||
1004 | dprintk("%s: set secfilter\n", __func__); | ||
1005 | dvb_net_filter_sec_set(dev, &priv->secfilter, mac, mask_normal); | ||
1006 | } | ||
1007 | |||
1008 | switch (priv->rx_mode) { | ||
1009 | case RX_MODE_MULTI: | ||
1010 | for (i = 0; i < priv->multi_num; i++) { | ||
1011 | dprintk("%s: set multi_secfilter[%d]\n", __func__, i); | ||
1012 | dvb_net_filter_sec_set(dev, &priv->multi_secfilter[i], | ||
1013 | priv->multi_macs[i], mask_normal); | ||
1014 | } | ||
1015 | break; | ||
1016 | case RX_MODE_ALL_MULTI: | ||
1017 | priv->multi_num=1; | ||
1018 | dprintk("%s: set multi_secfilter[0]\n", __func__); | ||
1019 | dvb_net_filter_sec_set(dev, &priv->multi_secfilter[0], | ||
1020 | mac_allmulti, mask_allmulti); | ||
1021 | break; | ||
1022 | case RX_MODE_PROMISC: | ||
1023 | priv->multi_num=0; | ||
1024 | dprintk("%s: set secfilter\n", __func__); | ||
1025 | dvb_net_filter_sec_set(dev, &priv->secfilter, mac, mask_promisc); | ||
1026 | break; | ||
1027 | } | ||
1028 | |||
1029 | dprintk("%s: start filtering\n", __func__); | ||
1030 | priv->secfeed->start_filtering(priv->secfeed); | ||
1031 | } else if (priv->feedtype == DVB_NET_FEEDTYPE_ULE) { | ||
1032 | struct timespec timeout = { 0, 10000000 }; // 10 msec | ||
1033 | |||
1034 | /* we have payloads encapsulated in TS */ | ||
1035 | dprintk("%s: alloc tsfeed\n", __func__); | ||
1036 | ret = demux->allocate_ts_feed(demux, &priv->tsfeed, dvb_net_ts_callback); | ||
1037 | if (ret < 0) { | ||
1038 | printk("%s: could not allocate ts feed\n", dev->name); | ||
1039 | goto error; | ||
1040 | } | ||
1041 | |||
1042 | /* Set netdevice pointer for ts decaps callback. */ | ||
1043 | priv->tsfeed->priv = (void *)dev; | ||
1044 | ret = priv->tsfeed->set(priv->tsfeed, | ||
1045 | priv->pid, /* pid */ | ||
1046 | TS_PACKET, /* type */ | ||
1047 | DMX_TS_PES_OTHER, /* pes type */ | ||
1048 | 32768, /* circular buffer size */ | ||
1049 | timeout /* timeout */ | ||
1050 | ); | ||
1051 | |||
1052 | if (ret < 0) { | ||
1053 | printk("%s: could not set ts feed\n", dev->name); | ||
1054 | priv->demux->release_ts_feed(priv->demux, priv->tsfeed); | ||
1055 | priv->tsfeed = NULL; | ||
1056 | goto error; | ||
1057 | } | ||
1058 | |||
1059 | dprintk("%s: start filtering\n", __func__); | ||
1060 | priv->tsfeed->start_filtering(priv->tsfeed); | ||
1061 | } else | ||
1062 | ret = -EINVAL; | ||
1063 | |||
1064 | error: | ||
1065 | mutex_unlock(&priv->mutex); | ||
1066 | return ret; | ||
1067 | } | ||
1068 | |||
1069 | static int dvb_net_feed_stop(struct net_device *dev) | ||
1070 | { | ||
1071 | struct dvb_net_priv *priv = netdev_priv(dev); | ||
1072 | int i, ret = 0; | ||
1073 | |||
1074 | dprintk("%s\n", __func__); | ||
1075 | mutex_lock(&priv->mutex); | ||
1076 | if (priv->feedtype == DVB_NET_FEEDTYPE_MPE) { | ||
1077 | if (priv->secfeed) { | ||
1078 | if (priv->secfeed->is_filtering) { | ||
1079 | dprintk("%s: stop secfeed\n", __func__); | ||
1080 | priv->secfeed->stop_filtering(priv->secfeed); | ||
1081 | } | ||
1082 | |||
1083 | if (priv->secfilter) { | ||
1084 | dprintk("%s: release secfilter\n", __func__); | ||
1085 | priv->secfeed->release_filter(priv->secfeed, | ||
1086 | priv->secfilter); | ||
1087 | priv->secfilter=NULL; | ||
1088 | } | ||
1089 | |||
1090 | for (i=0; i<priv->multi_num; i++) { | ||
1091 | if (priv->multi_secfilter[i]) { | ||
1092 | dprintk("%s: release multi_filter[%d]\n", | ||
1093 | __func__, i); | ||
1094 | priv->secfeed->release_filter(priv->secfeed, | ||
1095 | priv->multi_secfilter[i]); | ||
1096 | priv->multi_secfilter[i] = NULL; | ||
1097 | } | ||
1098 | } | ||
1099 | |||
1100 | priv->demux->release_section_feed(priv->demux, priv->secfeed); | ||
1101 | priv->secfeed = NULL; | ||
1102 | } else | ||
1103 | printk("%s: no feed to stop\n", dev->name); | ||
1104 | } else if (priv->feedtype == DVB_NET_FEEDTYPE_ULE) { | ||
1105 | if (priv->tsfeed) { | ||
1106 | if (priv->tsfeed->is_filtering) { | ||
1107 | dprintk("%s: stop tsfeed\n", __func__); | ||
1108 | priv->tsfeed->stop_filtering(priv->tsfeed); | ||
1109 | } | ||
1110 | priv->demux->release_ts_feed(priv->demux, priv->tsfeed); | ||
1111 | priv->tsfeed = NULL; | ||
1112 | } | ||
1113 | else | ||
1114 | printk("%s: no ts feed to stop\n", dev->name); | ||
1115 | } else | ||
1116 | ret = -EINVAL; | ||
1117 | mutex_unlock(&priv->mutex); | ||
1118 | return ret; | ||
1119 | } | ||
1120 | |||
1121 | |||
1122 | static int dvb_set_mc_filter(struct net_device *dev, unsigned char *addr) | ||
1123 | { | ||
1124 | struct dvb_net_priv *priv = netdev_priv(dev); | ||
1125 | |||
1126 | if (priv->multi_num == DVB_NET_MULTICAST_MAX) | ||
1127 | return -ENOMEM; | ||
1128 | |||
1129 | memcpy(priv->multi_macs[priv->multi_num], addr, ETH_ALEN); | ||
1130 | |||
1131 | priv->multi_num++; | ||
1132 | return 0; | ||
1133 | } | ||
1134 | |||
1135 | |||
1136 | static void wq_set_multicast_list (struct work_struct *work) | ||
1137 | { | ||
1138 | struct dvb_net_priv *priv = | ||
1139 | container_of(work, struct dvb_net_priv, set_multicast_list_wq); | ||
1140 | struct net_device *dev = priv->net; | ||
1141 | |||
1142 | dvb_net_feed_stop(dev); | ||
1143 | priv->rx_mode = RX_MODE_UNI; | ||
1144 | netif_addr_lock_bh(dev); | ||
1145 | |||
1146 | if (dev->flags & IFF_PROMISC) { | ||
1147 | dprintk("%s: promiscuous mode\n", dev->name); | ||
1148 | priv->rx_mode = RX_MODE_PROMISC; | ||
1149 | } else if ((dev->flags & IFF_ALLMULTI)) { | ||
1150 | dprintk("%s: allmulti mode\n", dev->name); | ||
1151 | priv->rx_mode = RX_MODE_ALL_MULTI; | ||
1152 | } else if (!netdev_mc_empty(dev)) { | ||
1153 | struct netdev_hw_addr *ha; | ||
1154 | |||
1155 | dprintk("%s: set_mc_list, %d entries\n", | ||
1156 | dev->name, netdev_mc_count(dev)); | ||
1157 | |||
1158 | priv->rx_mode = RX_MODE_MULTI; | ||
1159 | priv->multi_num = 0; | ||
1160 | |||
1161 | netdev_for_each_mc_addr(ha, dev) | ||
1162 | dvb_set_mc_filter(dev, ha->addr); | ||
1163 | } | ||
1164 | |||
1165 | netif_addr_unlock_bh(dev); | ||
1166 | dvb_net_feed_start(dev); | ||
1167 | } | ||
1168 | |||
1169 | |||
1170 | static void dvb_net_set_multicast_list (struct net_device *dev) | ||
1171 | { | ||
1172 | struct dvb_net_priv *priv = netdev_priv(dev); | ||
1173 | schedule_work(&priv->set_multicast_list_wq); | ||
1174 | } | ||
1175 | |||
1176 | |||
1177 | static void wq_restart_net_feed (struct work_struct *work) | ||
1178 | { | ||
1179 | struct dvb_net_priv *priv = | ||
1180 | container_of(work, struct dvb_net_priv, restart_net_feed_wq); | ||
1181 | struct net_device *dev = priv->net; | ||
1182 | |||
1183 | if (netif_running(dev)) { | ||
1184 | dvb_net_feed_stop(dev); | ||
1185 | dvb_net_feed_start(dev); | ||
1186 | } | ||
1187 | } | ||
1188 | |||
1189 | |||
1190 | static int dvb_net_set_mac (struct net_device *dev, void *p) | ||
1191 | { | ||
1192 | struct dvb_net_priv *priv = netdev_priv(dev); | ||
1193 | struct sockaddr *addr=p; | ||
1194 | |||
1195 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | ||
1196 | |||
1197 | if (netif_running(dev)) | ||
1198 | schedule_work(&priv->restart_net_feed_wq); | ||
1199 | |||
1200 | return 0; | ||
1201 | } | ||
1202 | |||
1203 | |||
1204 | static int dvb_net_open(struct net_device *dev) | ||
1205 | { | ||
1206 | struct dvb_net_priv *priv = netdev_priv(dev); | ||
1207 | |||
1208 | priv->in_use++; | ||
1209 | dvb_net_feed_start(dev); | ||
1210 | return 0; | ||
1211 | } | ||
1212 | |||
1213 | |||
1214 | static int dvb_net_stop(struct net_device *dev) | ||
1215 | { | ||
1216 | struct dvb_net_priv *priv = netdev_priv(dev); | ||
1217 | |||
1218 | priv->in_use--; | ||
1219 | return dvb_net_feed_stop(dev); | ||
1220 | } | ||
1221 | |||
1222 | static const struct header_ops dvb_header_ops = { | ||
1223 | .create = eth_header, | ||
1224 | .parse = eth_header_parse, | ||
1225 | .rebuild = eth_rebuild_header, | ||
1226 | }; | ||
1227 | |||
1228 | |||
1229 | static const struct net_device_ops dvb_netdev_ops = { | ||
1230 | .ndo_open = dvb_net_open, | ||
1231 | .ndo_stop = dvb_net_stop, | ||
1232 | .ndo_start_xmit = dvb_net_tx, | ||
1233 | .ndo_set_multicast_list = dvb_net_set_multicast_list, | ||
1234 | .ndo_set_mac_address = dvb_net_set_mac, | ||
1235 | .ndo_change_mtu = eth_change_mtu, | ||
1236 | .ndo_validate_addr = eth_validate_addr, | ||
1237 | }; | ||
1238 | |||
1239 | static void dvb_net_setup(struct net_device *dev) | ||
1240 | { | ||
1241 | ether_setup(dev); | ||
1242 | |||
1243 | dev->header_ops = &dvb_header_ops; | ||
1244 | dev->netdev_ops = &dvb_netdev_ops; | ||
1245 | dev->mtu = 4096; | ||
1246 | |||
1247 | dev->flags |= IFF_NOARP; | ||
1248 | } | ||
1249 | |||
1250 | static int get_if(struct dvb_net *dvbnet) | ||
1251 | { | ||
1252 | int i; | ||
1253 | |||
1254 | for (i=0; i<DVB_NET_DEVICES_MAX; i++) | ||
1255 | if (!dvbnet->state[i]) | ||
1256 | break; | ||
1257 | |||
1258 | if (i == DVB_NET_DEVICES_MAX) | ||
1259 | return -1; | ||
1260 | |||
1261 | dvbnet->state[i]=1; | ||
1262 | return i; | ||
1263 | } | ||
1264 | |||
1265 | static int dvb_net_add_if(struct dvb_net *dvbnet, u16 pid, u8 feedtype) | ||
1266 | { | ||
1267 | struct net_device *net; | ||
1268 | struct dvb_net_priv *priv; | ||
1269 | int result; | ||
1270 | int if_num; | ||
1271 | |||
1272 | if (feedtype != DVB_NET_FEEDTYPE_MPE && feedtype != DVB_NET_FEEDTYPE_ULE) | ||
1273 | return -EINVAL; | ||
1274 | if ((if_num = get_if(dvbnet)) < 0) | ||
1275 | return -EINVAL; | ||
1276 | |||
1277 | net = alloc_netdev(sizeof(struct dvb_net_priv), "dvb", dvb_net_setup); | ||
1278 | if (!net) | ||
1279 | return -ENOMEM; | ||
1280 | |||
1281 | if (dvbnet->dvbdev->id) | ||
1282 | snprintf(net->name, IFNAMSIZ, "dvb%d%u%d", | ||
1283 | dvbnet->dvbdev->adapter->num, dvbnet->dvbdev->id, if_num); | ||
1284 | else | ||
1285 | /* compatibility fix to keep dvb0_0 format */ | ||
1286 | snprintf(net->name, IFNAMSIZ, "dvb%d_%d", | ||
1287 | dvbnet->dvbdev->adapter->num, if_num); | ||
1288 | |||
1289 | net->addr_len = 6; | ||
1290 | memcpy(net->dev_addr, dvbnet->dvbdev->adapter->proposed_mac, 6); | ||
1291 | |||
1292 | dvbnet->device[if_num] = net; | ||
1293 | |||
1294 | priv = netdev_priv(net); | ||
1295 | priv->net = net; | ||
1296 | priv->demux = dvbnet->demux; | ||
1297 | priv->pid = pid; | ||
1298 | priv->rx_mode = RX_MODE_UNI; | ||
1299 | priv->need_pusi = 1; | ||
1300 | priv->tscc = 0; | ||
1301 | priv->feedtype = feedtype; | ||
1302 | reset_ule(priv); | ||
1303 | |||
1304 | INIT_WORK(&priv->set_multicast_list_wq, wq_set_multicast_list); | ||
1305 | INIT_WORK(&priv->restart_net_feed_wq, wq_restart_net_feed); | ||
1306 | mutex_init(&priv->mutex); | ||
1307 | |||
1308 | net->base_addr = pid; | ||
1309 | |||
1310 | if ((result = register_netdev(net)) < 0) { | ||
1311 | dvbnet->device[if_num] = NULL; | ||
1312 | free_netdev(net); | ||
1313 | return result; | ||
1314 | } | ||
1315 | printk("dvb_net: created network interface %s\n", net->name); | ||
1316 | |||
1317 | return if_num; | ||
1318 | } | ||
1319 | |||
1320 | static int dvb_net_remove_if(struct dvb_net *dvbnet, unsigned long num) | ||
1321 | { | ||
1322 | struct net_device *net = dvbnet->device[num]; | ||
1323 | struct dvb_net_priv *priv; | ||
1324 | |||
1325 | if (!dvbnet->state[num]) | ||
1326 | return -EINVAL; | ||
1327 | priv = netdev_priv(net); | ||
1328 | if (priv->in_use) | ||
1329 | return -EBUSY; | ||
1330 | |||
1331 | dvb_net_stop(net); | ||
1332 | flush_work_sync(&priv->set_multicast_list_wq); | ||
1333 | flush_work_sync(&priv->restart_net_feed_wq); | ||
1334 | printk("dvb_net: removed network interface %s\n", net->name); | ||
1335 | unregister_netdev(net); | ||
1336 | dvbnet->state[num]=0; | ||
1337 | dvbnet->device[num] = NULL; | ||
1338 | free_netdev(net); | ||
1339 | |||
1340 | return 0; | ||
1341 | } | ||
1342 | |||
1343 | static int dvb_net_do_ioctl(struct file *file, | ||
1344 | unsigned int cmd, void *parg) | ||
1345 | { | ||
1346 | struct dvb_device *dvbdev = file->private_data; | ||
1347 | struct dvb_net *dvbnet = dvbdev->priv; | ||
1348 | |||
1349 | if (((file->f_flags&O_ACCMODE)==O_RDONLY)) | ||
1350 | return -EPERM; | ||
1351 | |||
1352 | switch (cmd) { | ||
1353 | case NET_ADD_IF: | ||
1354 | { | ||
1355 | struct dvb_net_if *dvbnetif = parg; | ||
1356 | int result; | ||
1357 | |||
1358 | if (!capable(CAP_SYS_ADMIN)) | ||
1359 | return -EPERM; | ||
1360 | |||
1361 | if (!try_module_get(dvbdev->adapter->module)) | ||
1362 | return -EPERM; | ||
1363 | |||
1364 | result=dvb_net_add_if(dvbnet, dvbnetif->pid, dvbnetif->feedtype); | ||
1365 | if (result<0) { | ||
1366 | module_put(dvbdev->adapter->module); | ||
1367 | return result; | ||
1368 | } | ||
1369 | dvbnetif->if_num=result; | ||
1370 | break; | ||
1371 | } | ||
1372 | case NET_GET_IF: | ||
1373 | { | ||
1374 | struct net_device *netdev; | ||
1375 | struct dvb_net_priv *priv_data; | ||
1376 | struct dvb_net_if *dvbnetif = parg; | ||
1377 | |||
1378 | if (dvbnetif->if_num >= DVB_NET_DEVICES_MAX || | ||
1379 | !dvbnet->state[dvbnetif->if_num]) | ||
1380 | return -EINVAL; | ||
1381 | |||
1382 | netdev = dvbnet->device[dvbnetif->if_num]; | ||
1383 | |||
1384 | priv_data = netdev_priv(netdev); | ||
1385 | dvbnetif->pid=priv_data->pid; | ||
1386 | dvbnetif->feedtype=priv_data->feedtype; | ||
1387 | break; | ||
1388 | } | ||
1389 | case NET_REMOVE_IF: | ||
1390 | { | ||
1391 | int ret; | ||
1392 | |||
1393 | if (!capable(CAP_SYS_ADMIN)) | ||
1394 | return -EPERM; | ||
1395 | if ((unsigned long) parg >= DVB_NET_DEVICES_MAX) | ||
1396 | return -EINVAL; | ||
1397 | ret = dvb_net_remove_if(dvbnet, (unsigned long) parg); | ||
1398 | if (!ret) | ||
1399 | module_put(dvbdev->adapter->module); | ||
1400 | return ret; | ||
1401 | } | ||
1402 | |||
1403 | /* binary compatibility cruft */ | ||
1404 | case __NET_ADD_IF_OLD: | ||
1405 | { | ||
1406 | struct __dvb_net_if_old *dvbnetif = parg; | ||
1407 | int result; | ||
1408 | |||
1409 | if (!capable(CAP_SYS_ADMIN)) | ||
1410 | return -EPERM; | ||
1411 | |||
1412 | if (!try_module_get(dvbdev->adapter->module)) | ||
1413 | return -EPERM; | ||
1414 | |||
1415 | result=dvb_net_add_if(dvbnet, dvbnetif->pid, DVB_NET_FEEDTYPE_MPE); | ||
1416 | if (result<0) { | ||
1417 | module_put(dvbdev->adapter->module); | ||
1418 | return result; | ||
1419 | } | ||
1420 | dvbnetif->if_num=result; | ||
1421 | break; | ||
1422 | } | ||
1423 | case __NET_GET_IF_OLD: | ||
1424 | { | ||
1425 | struct net_device *netdev; | ||
1426 | struct dvb_net_priv *priv_data; | ||
1427 | struct __dvb_net_if_old *dvbnetif = parg; | ||
1428 | |||
1429 | if (dvbnetif->if_num >= DVB_NET_DEVICES_MAX || | ||
1430 | !dvbnet->state[dvbnetif->if_num]) | ||
1431 | return -EINVAL; | ||
1432 | |||
1433 | netdev = dvbnet->device[dvbnetif->if_num]; | ||
1434 | |||
1435 | priv_data = netdev_priv(netdev); | ||
1436 | dvbnetif->pid=priv_data->pid; | ||
1437 | break; | ||
1438 | } | ||
1439 | default: | ||
1440 | return -ENOTTY; | ||
1441 | } | ||
1442 | return 0; | ||
1443 | } | ||
1444 | |||
1445 | static long dvb_net_ioctl(struct file *file, | ||
1446 | unsigned int cmd, unsigned long arg) | ||
1447 | { | ||
1448 | return dvb_usercopy(file, cmd, arg, dvb_net_do_ioctl); | ||
1449 | } | ||
1450 | |||
1451 | static int dvb_net_close(struct inode *inode, struct file *file) | ||
1452 | { | ||
1453 | struct dvb_device *dvbdev = file->private_data; | ||
1454 | struct dvb_net *dvbnet = dvbdev->priv; | ||
1455 | |||
1456 | dvb_generic_release(inode, file); | ||
1457 | |||
1458 | if(dvbdev->users == 1 && dvbnet->exit == 1) { | ||
1459 | fops_put(file->f_op); | ||
1460 | file->f_op = NULL; | ||
1461 | wake_up(&dvbdev->wait_queue); | ||
1462 | } | ||
1463 | return 0; | ||
1464 | } | ||
1465 | |||
1466 | |||
1467 | static const struct file_operations dvb_net_fops = { | ||
1468 | .owner = THIS_MODULE, | ||
1469 | .unlocked_ioctl = dvb_net_ioctl, | ||
1470 | .open = dvb_generic_open, | ||
1471 | .release = dvb_net_close, | ||
1472 | .llseek = noop_llseek, | ||
1473 | }; | ||
1474 | |||
1475 | static struct dvb_device dvbdev_net = { | ||
1476 | .priv = NULL, | ||
1477 | .users = 1, | ||
1478 | .writers = 1, | ||
1479 | .fops = &dvb_net_fops, | ||
1480 | }; | ||
1481 | |||
1482 | |||
1483 | void dvb_net_release (struct dvb_net *dvbnet) | ||
1484 | { | ||
1485 | int i; | ||
1486 | |||
1487 | dvbnet->exit = 1; | ||
1488 | if (dvbnet->dvbdev->users < 1) | ||
1489 | wait_event(dvbnet->dvbdev->wait_queue, | ||
1490 | dvbnet->dvbdev->users==1); | ||
1491 | |||
1492 | dvb_unregister_device(dvbnet->dvbdev); | ||
1493 | |||
1494 | for (i=0; i<DVB_NET_DEVICES_MAX; i++) { | ||
1495 | if (!dvbnet->state[i]) | ||
1496 | continue; | ||
1497 | dvb_net_remove_if(dvbnet, i); | ||
1498 | } | ||
1499 | } | ||
1500 | EXPORT_SYMBOL(dvb_net_release); | ||
1501 | |||
1502 | |||
1503 | int dvb_net_init (struct dvb_adapter *adap, struct dvb_net *dvbnet, | ||
1504 | struct dmx_demux *dmx) | ||
1505 | { | ||
1506 | int i; | ||
1507 | |||
1508 | dvbnet->demux = dmx; | ||
1509 | |||
1510 | for (i=0; i<DVB_NET_DEVICES_MAX; i++) | ||
1511 | dvbnet->state[i] = 0; | ||
1512 | |||
1513 | dvb_register_device (adap, &dvbnet->dvbdev, &dvbdev_net, | ||
1514 | dvbnet, DVB_DEVICE_NET); | ||
1515 | |||
1516 | return 0; | ||
1517 | } | ||
1518 | EXPORT_SYMBOL(dvb_net_init); | ||