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1da177e4 LT |
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 | * | |
18232ca6 | 15 | * ULE Decaps according to RFC 4326. |
1da177e4 LT |
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. | |
18232ca6 CP |
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. | |
1da177e4 LT |
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 | * | |
1da177e4 LT |
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> | |
3593cab5 | 65 | #include <linux/mutex.h> |
1da177e4 LT |
66 | |
67 | #include "dvb_demux.h" | |
68 | #include "dvb_net.h" | |
69 | ||
70 | static int dvb_net_debug; | |
71 | module_param(dvb_net_debug, int, 0444); | |
72 | MODULE_PARM_DESC(dvb_net_debug, "enable debug messages"); | |
73 | ||
74 | #define dprintk(x...) do { if (dvb_net_debug) printk(x); } while (0) | |
75 | ||
76 | ||
77 | static inline __u32 iov_crc32( __u32 c, struct kvec *iov, unsigned int cnt ) | |
78 | { | |
79 | unsigned int j; | |
80 | for (j = 0; j < cnt; j++) | |
81 | c = crc32_be( c, iov[j].iov_base, iov[j].iov_len ); | |
82 | return c; | |
83 | } | |
84 | ||
85 | ||
86 | #define DVB_NET_MULTICAST_MAX 10 | |
87 | ||
88 | #undef ULE_DEBUG | |
89 | ||
90 | #ifdef ULE_DEBUG | |
91 | ||
18232ca6 CP |
92 | #define MAC_ADDR_PRINTFMT "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x" |
93 | #define MAX_ADDR_PRINTFMT_ARGS(macap) (macap)[0],(macap)[1],(macap)[2],(macap)[3],(macap)[4],(macap)[5] | |
94 | ||
1da177e4 LT |
95 | #define isprint(c) ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9')) |
96 | ||
97 | static void hexdump( const unsigned char *buf, unsigned short len ) | |
98 | { | |
99 | char str[80], octet[10]; | |
100 | int ofs, i, l; | |
101 | ||
102 | for (ofs = 0; ofs < len; ofs += 16) { | |
103 | sprintf( str, "%03d: ", ofs ); | |
104 | ||
105 | for (i = 0; i < 16; i++) { | |
106 | if ((i + ofs) < len) | |
107 | sprintf( octet, "%02x ", buf[ofs + i] ); | |
108 | else | |
109 | strcpy( octet, " " ); | |
110 | ||
111 | strcat( str, octet ); | |
112 | } | |
113 | strcat( str, " " ); | |
114 | l = strlen( str ); | |
115 | ||
116 | for (i = 0; (i < 16) && ((i + ofs) < len); i++) | |
117 | str[l++] = isprint( buf[ofs + i] ) ? buf[ofs + i] : '.'; | |
118 | ||
119 | str[l] = '\0'; | |
120 | printk( KERN_WARNING "%s\n", str ); | |
121 | } | |
122 | } | |
123 | ||
124 | #endif | |
125 | ||
126 | struct dvb_net_priv { | |
127 | int in_use; | |
128 | struct net_device_stats stats; | |
129 | u16 pid; | |
c4028958 | 130 | struct net_device *net; |
1da177e4 LT |
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. */ | |
3593cab5 | 159 | struct mutex mutex; |
1da177e4 LT |
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 | */ | |
12fbcef1 | 171 | static __be16 dvb_net_eth_type_trans(struct sk_buff *skb, |
1da177e4 LT |
172 | struct net_device *dev) |
173 | { | |
174 | struct ethhdr *eth; | |
175 | unsigned char *rawp; | |
176 | ||
98e399f8 | 177 | skb_reset_mac_header(skb); |
1da177e4 | 178 | skb_pull(skb,dev->hard_header_len); |
1da177e4 | 179 | eth = eth_hdr(skb); |
1da177e4 LT |
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 | ||
18232ca6 CP |
221 | #define ULE_OPTEXTHDR_PADDING 0 |
222 | ||
1da177e4 LT |
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 | { | |
18232ca6 CP |
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. | |
1da177e4 LT |
243 | */ |
244 | p->ule_bridged = 1; | |
245 | return 0; | |
246 | } | |
247 | ||
18232ca6 CP |
248 | static int ule_exthdr_padding(struct dvb_net_priv *p) |
249 | { | |
250 | return 0; | |
251 | } | |
1da177e4 LT |
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. */ | |
18232ca6 CP |
265 | static int (*ule_optional_ext_handlers[255])( struct dvb_net_priv *p ) = |
266 | { [0] = ule_exthdr_padding, [1] = NULL, }; | |
1da177e4 LT |
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 ); | |
18232ca6 CP |
277 | if(ext_len >= 0) { |
278 | p->ule_next_hdr += ext_len; | |
279 | if (!p->ule_bridged) { | |
12fbcef1 | 280 | p->ule_sndu_type = ntohs(*(__be16 *)p->ule_next_hdr); |
18232ca6 CP |
281 | p->ule_next_hdr += 2; |
282 | } else { | |
12fbcef1 | 283 | p->ule_sndu_type = ntohs(*(__be16 *)(p->ule_next_hdr + ((p->ule_dbit ? 2 : 3) * ETH_ALEN))); |
18232ca6 CP |
284 | /* This assures the extension handling loop will terminate. */ |
285 | } | |
1da177e4 | 286 | } |
18232ca6 | 287 | // else: extension handler failed or SNDU should be discarded |
1da177e4 LT |
288 | } else |
289 | ext_len = -1; /* SNDU has to be discarded. */ | |
290 | } else { | |
291 | /* Optional extension header. Calculate the length. */ | |
18232ca6 | 292 | ext_len = hlen << 1; |
1da177e4 LT |
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; | |
12fbcef1 | 297 | p->ule_sndu_type = ntohs( *(__be16 *)(p->ule_next_hdr-2) ); |
18232ca6 CP |
298 | /* |
299 | * note: the length of the next header type is included in the | |
300 | * length of THIS optional extension header | |
301 | */ | |
1da177e4 LT |
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 ); | |
18232ca6 CP |
314 | if (l < 0) |
315 | return l; /* Stop extension header processing and discard SNDU. */ | |
1da177e4 | 316 | total_ext_len += l; |
18232ca6 CP |
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 | |
1da177e4 LT |
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 | { | |
0c53c70f | 348 | struct dvb_net_priv *priv = dev->priv; |
1da177e4 | 349 | unsigned long skipped = 0L; |
372280d2 TP |
350 | const u8 *ts, *ts_end, *from_where = NULL; |
351 | u8 ts_remain = 0, how_much = 0, new_ts = 1; | |
1da177e4 LT |
352 | struct ethhdr *ethh = NULL; |
353 | ||
354 | #ifdef ULE_DEBUG | |
355 | /* The code inside ULE_DEBUG keeps a history of the last 100 TS cells processed. */ | |
356 | static unsigned char ule_hist[100*TS_SZ]; | |
ff699e6b | 357 | static unsigned char *ule_where = ule_hist, ule_dump; |
1da177e4 LT |
358 | #endif |
359 | ||
1da177e4 LT |
360 | /* For all TS cells in current buffer. |
361 | * Appearently, we are called for every single TS cell. | |
362 | */ | |
372280d2 | 363 | for (ts = buf, ts_end = buf + buf_len; ts < ts_end; /* no default incr. */ ) { |
1da177e4 LT |
364 | |
365 | if (new_ts) { | |
366 | /* We are about to process a new TS cell. */ | |
367 | ||
368 | #ifdef ULE_DEBUG | |
369 | if (ule_where >= &ule_hist[100*TS_SZ]) ule_where = ule_hist; | |
370 | memcpy( ule_where, ts, TS_SZ ); | |
371 | if (ule_dump) { | |
372 | hexdump( ule_where, TS_SZ ); | |
373 | ule_dump = 0; | |
374 | } | |
375 | ule_where += TS_SZ; | |
376 | #endif | |
377 | ||
378 | /* Check TS error conditions: sync_byte, transport_error_indicator, scrambling_control . */ | |
379 | if ((ts[0] != TS_SYNC) || (ts[1] & TS_TEI) || ((ts[3] & TS_SC) != 0)) { | |
380 | printk(KERN_WARNING "%lu: Invalid TS cell: SYNC %#x, TEI %u, SC %#x.\n", | |
381 | priv->ts_count, ts[0], ts[1] & TS_TEI >> 7, ts[3] & 0xC0 >> 6); | |
382 | ||
383 | /* Drop partly decoded SNDU, reset state, resync on PUSI. */ | |
384 | if (priv->ule_skb) { | |
385 | dev_kfree_skb( priv->ule_skb ); | |
386 | /* Prepare for next SNDU. */ | |
18232ca6 CP |
387 | priv->stats.rx_errors++; |
388 | priv->stats.rx_frame_errors++; | |
1da177e4 LT |
389 | } |
390 | reset_ule(priv); | |
391 | priv->need_pusi = 1; | |
392 | ||
393 | /* Continue with next TS cell. */ | |
394 | ts += TS_SZ; | |
395 | priv->ts_count++; | |
396 | continue; | |
397 | } | |
398 | ||
399 | ts_remain = 184; | |
400 | from_where = ts + 4; | |
401 | } | |
402 | /* Synchronize on PUSI, if required. */ | |
403 | if (priv->need_pusi) { | |
404 | if (ts[1] & TS_PUSI) { | |
405 | /* Find beginning of first ULE SNDU in current TS cell. */ | |
406 | /* Synchronize continuity counter. */ | |
407 | priv->tscc = ts[3] & 0x0F; | |
408 | /* There is a pointer field here. */ | |
409 | if (ts[4] > ts_remain) { | |
410 | printk(KERN_ERR "%lu: Invalid ULE packet " | |
411 | "(pointer field %d)\n", priv->ts_count, ts[4]); | |
412 | ts += TS_SZ; | |
413 | priv->ts_count++; | |
414 | continue; | |
415 | } | |
416 | /* Skip to destination of pointer field. */ | |
417 | from_where = &ts[5] + ts[4]; | |
418 | ts_remain -= 1 + ts[4]; | |
419 | skipped = 0; | |
420 | } else { | |
421 | skipped++; | |
422 | ts += TS_SZ; | |
423 | priv->ts_count++; | |
424 | continue; | |
425 | } | |
426 | } | |
427 | ||
1da177e4 | 428 | if (new_ts) { |
18232ca6 | 429 | /* Check continuity counter. */ |
1da177e4 LT |
430 | if ((ts[3] & 0x0F) == priv->tscc) |
431 | priv->tscc = (priv->tscc + 1) & 0x0F; | |
432 | else { | |
433 | /* TS discontinuity handling: */ | |
434 | printk(KERN_WARNING "%lu: TS discontinuity: got %#x, " | |
18232ca6 | 435 | "expected %#x.\n", priv->ts_count, ts[3] & 0x0F, priv->tscc); |
1da177e4 LT |
436 | /* Drop partly decoded SNDU, reset state, resync on PUSI. */ |
437 | if (priv->ule_skb) { | |
438 | dev_kfree_skb( priv->ule_skb ); | |
439 | /* Prepare for next SNDU. */ | |
440 | // reset_ule(priv); moved to below. | |
18232ca6 CP |
441 | priv->stats.rx_errors++; |
442 | priv->stats.rx_frame_errors++; | |
1da177e4 LT |
443 | } |
444 | reset_ule(priv); | |
445 | /* skip to next PUSI. */ | |
446 | priv->need_pusi = 1; | |
1da177e4 LT |
447 | continue; |
448 | } | |
449 | /* If we still have an incomplete payload, but PUSI is | |
450 | * set; some TS cells are missing. | |
451 | * This is only possible here, if we missed exactly 16 TS | |
452 | * cells (continuity counter wrap). */ | |
453 | if (ts[1] & TS_PUSI) { | |
454 | if (! priv->need_pusi) { | |
18232ca6 | 455 | if (!(*from_where < (ts_remain-1)) || *from_where != priv->ule_sndu_remain) { |
1da177e4 LT |
456 | /* Pointer field is invalid. Drop this TS cell and any started ULE SNDU. */ |
457 | printk(KERN_WARNING "%lu: Invalid pointer " | |
458 | "field: %u.\n", priv->ts_count, *from_where); | |
459 | ||
460 | /* Drop partly decoded SNDU, reset state, resync on PUSI. */ | |
461 | if (priv->ule_skb) { | |
462 | dev_kfree_skb( priv->ule_skb ); | |
463 | ((struct dvb_net_priv *) dev->priv)->stats.rx_errors++; | |
464 | ((struct dvb_net_priv *) dev->priv)->stats.rx_frame_errors++; | |
465 | } | |
466 | reset_ule(priv); | |
467 | priv->need_pusi = 1; | |
1da177e4 LT |
468 | continue; |
469 | } | |
470 | /* Skip pointer field (we're processing a | |
471 | * packed payload). */ | |
472 | from_where += 1; | |
473 | ts_remain -= 1; | |
474 | } else | |
475 | priv->need_pusi = 0; | |
476 | ||
477 | if (priv->ule_sndu_remain > 183) { | |
478 | /* Current SNDU lacks more data than there could be available in the | |
479 | * current TS cell. */ | |
18232ca6 CP |
480 | priv->stats.rx_errors++; |
481 | priv->stats.rx_length_errors++; | |
1da177e4 LT |
482 | printk(KERN_WARNING "%lu: Expected %d more SNDU bytes, but " |
483 | "got PUSI (pf %d, ts_remain %d). Flushing incomplete payload.\n", | |
484 | priv->ts_count, priv->ule_sndu_remain, ts[4], ts_remain); | |
485 | dev_kfree_skb(priv->ule_skb); | |
486 | /* Prepare for next SNDU. */ | |
487 | reset_ule(priv); | |
488 | /* Resync: go to where pointer field points to: start of next ULE SNDU. */ | |
489 | from_where += ts[4]; | |
490 | ts_remain -= ts[4]; | |
491 | } | |
492 | } | |
493 | } | |
494 | ||
495 | /* Check if new payload needs to be started. */ | |
496 | if (priv->ule_skb == NULL) { | |
497 | /* Start a new payload with skb. | |
498 | * Find ULE header. It is only guaranteed that the | |
499 | * length field (2 bytes) is contained in the current | |
500 | * TS. | |
501 | * Check ts_remain has to be >= 2 here. */ | |
502 | if (ts_remain < 2) { | |
503 | printk(KERN_WARNING "Invalid payload packing: only %d " | |
504 | "bytes left in TS. Resyncing.\n", ts_remain); | |
505 | priv->ule_sndu_len = 0; | |
506 | priv->need_pusi = 1; | |
507 | continue; | |
508 | } | |
509 | ||
510 | if (! priv->ule_sndu_len) { | |
511 | /* Got at least two bytes, thus extrace the SNDU length. */ | |
512 | priv->ule_sndu_len = from_where[0] << 8 | from_where[1]; | |
513 | if (priv->ule_sndu_len & 0x8000) { | |
514 | /* D-Bit is set: no dest mac present. */ | |
515 | priv->ule_sndu_len &= 0x7FFF; | |
516 | priv->ule_dbit = 1; | |
517 | } else | |
518 | priv->ule_dbit = 0; | |
519 | ||
18232ca6 | 520 | if (priv->ule_sndu_len < 5) { |
1da177e4 LT |
521 | printk(KERN_WARNING "%lu: Invalid ULE SNDU length %u. " |
522 | "Resyncing.\n", priv->ts_count, priv->ule_sndu_len); | |
18232ca6 CP |
523 | priv->stats.rx_errors++; |
524 | priv->stats.rx_length_errors++; | |
1da177e4 LT |
525 | priv->ule_sndu_len = 0; |
526 | priv->need_pusi = 1; | |
527 | new_ts = 1; | |
528 | ts += TS_SZ; | |
529 | priv->ts_count++; | |
530 | continue; | |
531 | } | |
532 | ts_remain -= 2; /* consume the 2 bytes SNDU length. */ | |
533 | from_where += 2; | |
534 | } | |
535 | ||
536 | /* | |
537 | * State of current TS: | |
538 | * ts_remain (remaining bytes in the current TS cell) | |
539 | * 0 ule_type is not available now, we need the next TS cell | |
540 | * 1 the first byte of the ule_type is present | |
541 | * >=2 full ULE header present, maybe some payload data as well. | |
542 | */ | |
543 | switch (ts_remain) { | |
544 | case 1: | |
545 | priv->ule_sndu_type = from_where[0] << 8; | |
546 | priv->ule_sndu_type_1 = 1; /* first byte of ule_type is set. */ | |
547 | ts_remain -= 1; from_where += 1; | |
548 | /* Continue w/ next TS. */ | |
549 | case 0: | |
550 | new_ts = 1; | |
551 | ts += TS_SZ; | |
552 | priv->ts_count++; | |
553 | continue; | |
554 | ||
555 | default: /* complete ULE header is present in current TS. */ | |
556 | /* Extract ULE type field. */ | |
557 | if (priv->ule_sndu_type_1) { | |
558 | priv->ule_sndu_type |= from_where[0]; | |
559 | from_where += 1; /* points to payload start. */ | |
560 | ts_remain -= 1; | |
561 | } else { | |
562 | /* Complete type is present in new TS. */ | |
563 | priv->ule_sndu_type = from_where[0] << 8 | from_where[1]; | |
564 | from_where += 2; /* points to payload start. */ | |
565 | ts_remain -= 2; | |
566 | } | |
567 | break; | |
568 | } | |
569 | ||
570 | /* Allocate the skb (decoder target buffer) with the correct size, as follows: | |
571 | * prepare for the largest case: bridged SNDU with MAC address (dbit = 0). */ | |
572 | priv->ule_skb = dev_alloc_skb( priv->ule_sndu_len + ETH_HLEN + ETH_ALEN ); | |
573 | if (priv->ule_skb == NULL) { | |
574 | printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", | |
575 | dev->name); | |
576 | ((struct dvb_net_priv *)dev->priv)->stats.rx_dropped++; | |
577 | return; | |
578 | } | |
579 | ||
580 | /* This includes the CRC32 _and_ dest mac, if !dbit. */ | |
581 | priv->ule_sndu_remain = priv->ule_sndu_len; | |
582 | priv->ule_skb->dev = dev; | |
583 | /* Leave space for Ethernet or bridged SNDU header (eth hdr plus one MAC addr). */ | |
584 | skb_reserve( priv->ule_skb, ETH_HLEN + ETH_ALEN ); | |
585 | } | |
586 | ||
587 | /* Copy data into our current skb. */ | |
588 | how_much = min(priv->ule_sndu_remain, (int)ts_remain); | |
589 | memcpy(skb_put(priv->ule_skb, how_much), from_where, how_much); | |
590 | priv->ule_sndu_remain -= how_much; | |
591 | ts_remain -= how_much; | |
592 | from_where += how_much; | |
593 | ||
594 | /* Check for complete payload. */ | |
595 | if (priv->ule_sndu_remain <= 0) { | |
596 | /* Check CRC32, we've got it in our skb already. */ | |
12fbcef1 AV |
597 | __be16 ulen = htons(priv->ule_sndu_len); |
598 | __be16 utype = htons(priv->ule_sndu_type); | |
27a884dc | 599 | const u8 *tail; |
1da177e4 LT |
600 | struct kvec iov[3] = { |
601 | { &ulen, sizeof ulen }, | |
602 | { &utype, sizeof utype }, | |
603 | { priv->ule_skb->data, priv->ule_skb->len - 4 } | |
604 | }; | |
dedcefb0 | 605 | u32 ule_crc = ~0L, expected_crc; |
1da177e4 LT |
606 | if (priv->ule_dbit) { |
607 | /* Set D-bit for CRC32 verification, | |
608 | * if it was set originally. */ | |
609 | ulen |= 0x0080; | |
610 | } | |
611 | ||
612 | ule_crc = iov_crc32(ule_crc, iov, 3); | |
27a884dc ACM |
613 | tail = skb_tail_pointer(priv->ule_skb); |
614 | expected_crc = *(tail - 4) << 24 | | |
615 | *(tail - 3) << 16 | | |
616 | *(tail - 2) << 8 | | |
617 | *(tail - 1); | |
1da177e4 | 618 | if (ule_crc != expected_crc) { |
5ef35be4 | 619 | printk(KERN_WARNING "%lu: CRC32 check FAILED: %08x / %08x, SNDU len %d type %#x, ts_remain %d, next 2: %x.\n", |
1da177e4 LT |
620 | 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); |
621 | ||
622 | #ifdef ULE_DEBUG | |
623 | hexdump( iov[0].iov_base, iov[0].iov_len ); | |
624 | hexdump( iov[1].iov_base, iov[1].iov_len ); | |
625 | hexdump( iov[2].iov_base, iov[2].iov_len ); | |
626 | ||
627 | if (ule_where == ule_hist) { | |
628 | hexdump( &ule_hist[98*TS_SZ], TS_SZ ); | |
629 | hexdump( &ule_hist[99*TS_SZ], TS_SZ ); | |
630 | } else if (ule_where == &ule_hist[TS_SZ]) { | |
631 | hexdump( &ule_hist[99*TS_SZ], TS_SZ ); | |
632 | hexdump( ule_hist, TS_SZ ); | |
633 | } else { | |
634 | hexdump( ule_where - TS_SZ - TS_SZ, TS_SZ ); | |
635 | hexdump( ule_where - TS_SZ, TS_SZ ); | |
636 | } | |
637 | ule_dump = 1; | |
638 | #endif | |
639 | ||
18232ca6 CP |
640 | priv->stats.rx_errors++; |
641 | priv->stats.rx_crc_errors++; | |
1da177e4 LT |
642 | dev_kfree_skb(priv->ule_skb); |
643 | } else { | |
644 | /* CRC32 verified OK. */ | |
18232ca6 CP |
645 | u8 dest_addr[ETH_ALEN]; |
646 | static const u8 bc_addr[ETH_ALEN] = | |
647 | { [ 0 ... ETH_ALEN-1] = 0xff }; | |
648 | ||
649 | /* CRC32 was OK. Remove it from skb. */ | |
650 | priv->ule_skb->tail -= 4; | |
651 | priv->ule_skb->len -= 4; | |
652 | ||
653 | if (!priv->ule_dbit) { | |
654 | /* | |
655 | * The destination MAC address is the | |
656 | * next data in the skb. It comes | |
657 | * before any extension headers. | |
658 | * | |
659 | * Check if the payload of this SNDU | |
660 | * should be passed up the stack. | |
661 | */ | |
662 | register int drop = 0; | |
663 | if (priv->rx_mode != RX_MODE_PROMISC) { | |
664 | if (priv->ule_skb->data[0] & 0x01) { | |
665 | /* multicast or broadcast */ | |
666 | if (memcmp(priv->ule_skb->data, bc_addr, ETH_ALEN)) { | |
667 | /* multicast */ | |
668 | if (priv->rx_mode == RX_MODE_MULTI) { | |
669 | int i; | |
670 | for(i = 0; i < priv->multi_num && memcmp(priv->ule_skb->data, priv->multi_macs[i], ETH_ALEN); i++) | |
671 | ; | |
672 | if (i == priv->multi_num) | |
673 | drop = 1; | |
674 | } else if (priv->rx_mode != RX_MODE_ALL_MULTI) | |
675 | drop = 1; /* no broadcast; */ | |
676 | /* else: all multicast mode: accept all multicast packets */ | |
677 | } | |
678 | /* else: broadcast */ | |
679 | } | |
680 | else if (memcmp(priv->ule_skb->data, dev->dev_addr, ETH_ALEN)) | |
681 | drop = 1; | |
682 | /* else: destination address matches the MAC address of our receiver device */ | |
683 | } | |
c84e6036 | 684 | /* else: promiscuous mode; pass everything up the stack */ |
18232ca6 CP |
685 | |
686 | if (drop) { | |
687 | #ifdef ULE_DEBUG | |
688 | dprintk("Dropping SNDU: MAC destination address does not match: dest addr: "MAC_ADDR_PRINTFMT", dev addr: "MAC_ADDR_PRINTFMT"\n", | |
689 | MAX_ADDR_PRINTFMT_ARGS(priv->ule_skb->data), MAX_ADDR_PRINTFMT_ARGS(dev->dev_addr)); | |
690 | #endif | |
691 | dev_kfree_skb(priv->ule_skb); | |
692 | goto sndu_done; | |
693 | } | |
694 | else | |
695 | { | |
d626f62b ACM |
696 | skb_copy_from_linear_data(priv->ule_skb, |
697 | dest_addr, | |
698 | ETH_ALEN); | |
18232ca6 CP |
699 | skb_pull(priv->ule_skb, ETH_ALEN); |
700 | } | |
701 | } | |
702 | ||
1da177e4 LT |
703 | /* Handle ULE Extension Headers. */ |
704 | if (priv->ule_sndu_type < 1536) { | |
705 | /* There is an extension header. Handle it accordingly. */ | |
18232ca6 | 706 | int l = handle_ule_extensions(priv); |
1da177e4 LT |
707 | if (l < 0) { |
708 | /* Mandatory extension header unknown or TEST SNDU. Drop it. */ | |
709 | // printk( KERN_WARNING "Dropping SNDU, extension headers.\n" ); | |
18232ca6 | 710 | dev_kfree_skb(priv->ule_skb); |
1da177e4 LT |
711 | goto sndu_done; |
712 | } | |
18232ca6 | 713 | skb_pull(priv->ule_skb, l); |
1da177e4 LT |
714 | } |
715 | ||
18232ca6 CP |
716 | /* |
717 | * Construct/assure correct ethernet header. | |
718 | * Note: in bridged mode (priv->ule_bridged != | |
719 | * 0) we already have the (original) ethernet | |
720 | * header at the start of the payload (after | |
721 | * optional dest. address and any extension | |
722 | * headers). | |
723 | */ | |
724 | ||
725 | if (!priv->ule_bridged) { | |
726 | skb_push(priv->ule_skb, ETH_HLEN); | |
727 | ethh = (struct ethhdr *)priv->ule_skb->data; | |
728 | if (!priv->ule_dbit) { | |
729 | /* dest_addr buffer is only valid if priv->ule_dbit == 0 */ | |
730 | memcpy(ethh->h_dest, dest_addr, ETH_ALEN); | |
731 | memset(ethh->h_source, 0, ETH_ALEN); | |
1da177e4 | 732 | } |
18232ca6 CP |
733 | else /* zeroize source and dest */ |
734 | memset( ethh, 0, ETH_ALEN*2 ); | |
735 | ||
736 | ethh->h_proto = htons(priv->ule_sndu_type); | |
1da177e4 | 737 | } |
18232ca6 | 738 | /* else: skb is in correct state; nothing to do. */ |
1da177e4 LT |
739 | priv->ule_bridged = 0; |
740 | ||
741 | /* Stuff into kernel's protocol stack. */ | |
742 | priv->ule_skb->protocol = dvb_net_eth_type_trans(priv->ule_skb, dev); | |
743 | /* If D-bit is set (i.e. destination MAC address not present), | |
744 | * receive the packet anyhow. */ | |
745 | /* if (priv->ule_dbit && skb->pkt_type == PACKET_OTHERHOST) | |
746 | priv->ule_skb->pkt_type = PACKET_HOST; */ | |
18232ca6 CP |
747 | priv->stats.rx_packets++; |
748 | priv->stats.rx_bytes += priv->ule_skb->len; | |
1da177e4 LT |
749 | netif_rx(priv->ule_skb); |
750 | } | |
751 | sndu_done: | |
752 | /* Prepare for next SNDU. */ | |
753 | reset_ule(priv); | |
754 | } | |
755 | ||
756 | /* More data in current TS (look at the bytes following the CRC32)? */ | |
757 | if (ts_remain >= 2 && *((unsigned short *)from_where) != 0xFFFF) { | |
758 | /* Next ULE SNDU starts right there. */ | |
759 | new_ts = 0; | |
760 | priv->ule_skb = NULL; | |
761 | priv->ule_sndu_type_1 = 0; | |
762 | priv->ule_sndu_len = 0; | |
763 | // printk(KERN_WARNING "More data in current TS: [%#x %#x %#x %#x]\n", | |
764 | // *(from_where + 0), *(from_where + 1), | |
765 | // *(from_where + 2), *(from_where + 3)); | |
766 | // printk(KERN_WARNING "ts @ %p, stopped @ %p:\n", ts, from_where + 0); | |
767 | // hexdump(ts, 188); | |
768 | } else { | |
769 | new_ts = 1; | |
770 | ts += TS_SZ; | |
771 | priv->ts_count++; | |
772 | if (priv->ule_skb == NULL) { | |
773 | priv->need_pusi = 1; | |
774 | priv->ule_sndu_type_1 = 0; | |
775 | priv->ule_sndu_len = 0; | |
776 | } | |
777 | } | |
778 | } /* for all available TS cells */ | |
779 | } | |
780 | ||
781 | static int dvb_net_ts_callback(const u8 *buffer1, size_t buffer1_len, | |
782 | const u8 *buffer2, size_t buffer2_len, | |
783 | struct dmx_ts_feed *feed, enum dmx_success success) | |
784 | { | |
0c53c70f | 785 | struct net_device *dev = feed->priv; |
1da177e4 | 786 | |
5fa1247a AV |
787 | if (buffer2) |
788 | printk(KERN_WARNING "buffer2 not NULL: %p.\n", buffer2); | |
1da177e4 LT |
789 | if (buffer1_len > 32768) |
790 | printk(KERN_WARNING "length > 32k: %zu.\n", buffer1_len); | |
791 | /* printk("TS callback: %u bytes, %u TS cells @ %p.\n", | |
afd1a0c9 | 792 | buffer1_len, buffer1_len / TS_SZ, buffer1); */ |
1da177e4 LT |
793 | dvb_net_ule(dev, buffer1, buffer1_len); |
794 | return 0; | |
795 | } | |
796 | ||
797 | ||
71be258b MK |
798 | static void dvb_net_sec(struct net_device *dev, |
799 | const u8 *pkt, int pkt_len) | |
1da177e4 | 800 | { |
afd1a0c9 MCC |
801 | u8 *eth; |
802 | struct sk_buff *skb; | |
1da177e4 | 803 | struct net_device_stats *stats = &(((struct dvb_net_priv *) dev->priv)->stats); |
59142330 | 804 | int snap = 0; |
1da177e4 LT |
805 | |
806 | /* note: pkt_len includes a 32bit checksum */ | |
807 | if (pkt_len < 16) { | |
808 | printk("%s: IP/MPE packet length = %d too small.\n", | |
809 | dev->name, pkt_len); | |
810 | stats->rx_errors++; | |
811 | stats->rx_length_errors++; | |
812 | return; | |
813 | } | |
814 | /* it seems some ISPs manage to screw up here, so we have to | |
815 | * relax the error checks... */ | |
816 | #if 0 | |
817 | if ((pkt[5] & 0xfd) != 0xc1) { | |
818 | /* drop scrambled or broken packets */ | |
819 | #else | |
820 | if ((pkt[5] & 0x3c) != 0x00) { | |
821 | /* drop scrambled */ | |
822 | #endif | |
823 | stats->rx_errors++; | |
824 | stats->rx_crc_errors++; | |
825 | return; | |
826 | } | |
827 | if (pkt[5] & 0x02) { | |
59142330 JS |
828 | /* handle LLC/SNAP, see rfc-1042 */ |
829 | if (pkt_len < 24 || memcmp(&pkt[12], "\xaa\xaa\x03\0\0\0", 6)) { | |
830 | stats->rx_dropped++; | |
831 | return; | |
832 | } | |
833 | snap = 8; | |
afd1a0c9 | 834 | } |
1da177e4 LT |
835 | if (pkt[7]) { |
836 | /* FIXME: assemble datagram from multiple sections */ | |
837 | stats->rx_errors++; | |
838 | stats->rx_frame_errors++; | |
839 | return; | |
840 | } | |
841 | ||
842 | /* we have 14 byte ethernet header (ip header follows); | |
59142330 | 843 | * 12 byte MPE header; 4 byte checksum; + 2 byte alignment, 8 byte LLC/SNAP |
1da177e4 | 844 | */ |
59142330 | 845 | if (!(skb = dev_alloc_skb(pkt_len - 4 - 12 + 14 + 2 - snap))) { |
1da177e4 LT |
846 | //printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name); |
847 | stats->rx_dropped++; | |
848 | return; | |
849 | } | |
850 | skb_reserve(skb, 2); /* longword align L3 header */ | |
851 | skb->dev = dev; | |
852 | ||
853 | /* copy L3 payload */ | |
59142330 JS |
854 | eth = (u8 *) skb_put(skb, pkt_len - 12 - 4 + 14 - snap); |
855 | memcpy(eth + 14, pkt + 12 + snap, pkt_len - 12 - 4 - snap); | |
1da177e4 LT |
856 | |
857 | /* create ethernet header: */ | |
afd1a0c9 MCC |
858 | eth[0]=pkt[0x0b]; |
859 | eth[1]=pkt[0x0a]; | |
860 | eth[2]=pkt[0x09]; | |
861 | eth[3]=pkt[0x08]; | |
862 | eth[4]=pkt[0x04]; | |
863 | eth[5]=pkt[0x03]; | |
1da177e4 | 864 | |
afd1a0c9 | 865 | eth[6]=eth[7]=eth[8]=eth[9]=eth[10]=eth[11]=0; |
1da177e4 | 866 | |
59142330 JS |
867 | if (snap) { |
868 | eth[12] = pkt[18]; | |
869 | eth[13] = pkt[19]; | |
870 | } else { | |
871 | /* protocol numbers are from rfc-1700 or | |
872 | * http://www.iana.org/assignments/ethernet-numbers | |
873 | */ | |
874 | if (pkt[12] >> 4 == 6) { /* version field from IP header */ | |
875 | eth[12] = 0x86; /* IPv6 */ | |
876 | eth[13] = 0xdd; | |
877 | } else { | |
878 | eth[12] = 0x08; /* IPv4 */ | |
879 | eth[13] = 0x00; | |
880 | } | |
881 | } | |
1da177e4 LT |
882 | |
883 | skb->protocol = dvb_net_eth_type_trans(skb, dev); | |
884 | ||
885 | stats->rx_packets++; | |
886 | stats->rx_bytes+=skb->len; | |
afd1a0c9 | 887 | netif_rx(skb); |
1da177e4 LT |
888 | } |
889 | ||
890 | static int dvb_net_sec_callback(const u8 *buffer1, size_t buffer1_len, | |
891 | const u8 *buffer2, size_t buffer2_len, | |
892 | struct dmx_section_filter *filter, | |
893 | enum dmx_success success) | |
894 | { | |
afd1a0c9 | 895 | struct net_device *dev = filter->priv; |
1da177e4 LT |
896 | |
897 | /** | |
898 | * we rely on the DVB API definition where exactly one complete | |
899 | * section is delivered in buffer1 | |
900 | */ | |
04b35abe | 901 | dvb_net_sec (dev, buffer1, buffer1_len); |
1da177e4 LT |
902 | return 0; |
903 | } | |
904 | ||
905 | static int dvb_net_tx(struct sk_buff *skb, struct net_device *dev) | |
906 | { | |
907 | dev_kfree_skb(skb); | |
908 | return 0; | |
909 | } | |
910 | ||
911 | static u8 mask_normal[6]={0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; | |
912 | static u8 mask_allmulti[6]={0xff, 0xff, 0xff, 0x00, 0x00, 0x00}; | |
913 | static u8 mac_allmulti[6]={0x01, 0x00, 0x5e, 0x00, 0x00, 0x00}; | |
914 | static u8 mask_promisc[6]={0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; | |
915 | ||
916 | static int dvb_net_filter_sec_set(struct net_device *dev, | |
917 | struct dmx_section_filter **secfilter, | |
918 | u8 *mac, u8 *mac_mask) | |
919 | { | |
0c53c70f | 920 | struct dvb_net_priv *priv = dev->priv; |
1da177e4 LT |
921 | int ret; |
922 | ||
923 | *secfilter=NULL; | |
924 | ret = priv->secfeed->allocate_filter(priv->secfeed, secfilter); | |
925 | if (ret<0) { | |
926 | printk("%s: could not get filter\n", dev->name); | |
927 | return ret; | |
928 | } | |
929 | ||
930 | (*secfilter)->priv=(void *) dev; | |
931 | ||
932 | memset((*secfilter)->filter_value, 0x00, DMX_MAX_FILTER_SIZE); | |
933 | memset((*secfilter)->filter_mask, 0x00, DMX_MAX_FILTER_SIZE); | |
934 | memset((*secfilter)->filter_mode, 0xff, DMX_MAX_FILTER_SIZE); | |
935 | ||
936 | (*secfilter)->filter_value[0]=0x3e; | |
937 | (*secfilter)->filter_value[3]=mac[5]; | |
938 | (*secfilter)->filter_value[4]=mac[4]; | |
939 | (*secfilter)->filter_value[8]=mac[3]; | |
940 | (*secfilter)->filter_value[9]=mac[2]; | |
941 | (*secfilter)->filter_value[10]=mac[1]; | |
942 | (*secfilter)->filter_value[11]=mac[0]; | |
943 | ||
944 | (*secfilter)->filter_mask[0] = 0xff; | |
945 | (*secfilter)->filter_mask[3] = mac_mask[5]; | |
946 | (*secfilter)->filter_mask[4] = mac_mask[4]; | |
947 | (*secfilter)->filter_mask[8] = mac_mask[3]; | |
948 | (*secfilter)->filter_mask[9] = mac_mask[2]; | |
949 | (*secfilter)->filter_mask[10] = mac_mask[1]; | |
950 | (*secfilter)->filter_mask[11]=mac_mask[0]; | |
951 | ||
952 | dprintk("%s: filter mac=%02x %02x %02x %02x %02x %02x\n", | |
953 | dev->name, mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); | |
954 | dprintk("%s: filter mask=%02x %02x %02x %02x %02x %02x\n", | |
955 | dev->name, mac_mask[0], mac_mask[1], mac_mask[2], | |
956 | mac_mask[3], mac_mask[4], mac_mask[5]); | |
957 | ||
958 | return 0; | |
959 | } | |
960 | ||
961 | static int dvb_net_feed_start(struct net_device *dev) | |
962 | { | |
1130ca45 | 963 | int ret = 0, i; |
0c53c70f | 964 | struct dvb_net_priv *priv = dev->priv; |
afd1a0c9 MCC |
965 | struct dmx_demux *demux = priv->demux; |
966 | unsigned char *mac = (unsigned char *) dev->dev_addr; | |
1da177e4 | 967 | |
46b4f7c1 | 968 | dprintk("%s: rx_mode %i\n", __func__, priv->rx_mode); |
3593cab5 | 969 | mutex_lock(&priv->mutex); |
1da177e4 | 970 | if (priv->tsfeed || priv->secfeed || priv->secfilter || priv->multi_secfilter[0]) |
46b4f7c1 | 971 | printk("%s: BUG %d\n", __func__, __LINE__); |
1da177e4 LT |
972 | |
973 | priv->secfeed=NULL; | |
974 | priv->secfilter=NULL; | |
975 | priv->tsfeed = NULL; | |
976 | ||
977 | if (priv->feedtype == DVB_NET_FEEDTYPE_MPE) { | |
46b4f7c1 | 978 | dprintk("%s: alloc secfeed\n", __func__); |
1da177e4 LT |
979 | ret=demux->allocate_section_feed(demux, &priv->secfeed, |
980 | dvb_net_sec_callback); | |
981 | if (ret<0) { | |
982 | printk("%s: could not allocate section feed\n", dev->name); | |
1130ca45 | 983 | goto error; |
1da177e4 LT |
984 | } |
985 | ||
5d2cd163 | 986 | ret = priv->secfeed->set(priv->secfeed, priv->pid, 32768, 1); |
1da177e4 LT |
987 | |
988 | if (ret<0) { | |
989 | printk("%s: could not set section feed\n", dev->name); | |
990 | priv->demux->release_section_feed(priv->demux, priv->secfeed); | |
991 | priv->secfeed=NULL; | |
1130ca45 | 992 | goto error; |
1da177e4 LT |
993 | } |
994 | ||
995 | if (priv->rx_mode != RX_MODE_PROMISC) { | |
46b4f7c1 | 996 | dprintk("%s: set secfilter\n", __func__); |
1da177e4 LT |
997 | dvb_net_filter_sec_set(dev, &priv->secfilter, mac, mask_normal); |
998 | } | |
999 | ||
1000 | switch (priv->rx_mode) { | |
1001 | case RX_MODE_MULTI: | |
1002 | for (i = 0; i < priv->multi_num; i++) { | |
46b4f7c1 | 1003 | dprintk("%s: set multi_secfilter[%d]\n", __func__, i); |
1da177e4 LT |
1004 | dvb_net_filter_sec_set(dev, &priv->multi_secfilter[i], |
1005 | priv->multi_macs[i], mask_normal); | |
1006 | } | |
1007 | break; | |
1008 | case RX_MODE_ALL_MULTI: | |
1009 | priv->multi_num=1; | |
46b4f7c1 | 1010 | dprintk("%s: set multi_secfilter[0]\n", __func__); |
1da177e4 LT |
1011 | dvb_net_filter_sec_set(dev, &priv->multi_secfilter[0], |
1012 | mac_allmulti, mask_allmulti); | |
1013 | break; | |
1014 | case RX_MODE_PROMISC: | |
1015 | priv->multi_num=0; | |
46b4f7c1 | 1016 | dprintk("%s: set secfilter\n", __func__); |
1da177e4 LT |
1017 | dvb_net_filter_sec_set(dev, &priv->secfilter, mac, mask_promisc); |
1018 | break; | |
1019 | } | |
1020 | ||
46b4f7c1 | 1021 | dprintk("%s: start filtering\n", __func__); |
1da177e4 LT |
1022 | priv->secfeed->start_filtering(priv->secfeed); |
1023 | } else if (priv->feedtype == DVB_NET_FEEDTYPE_ULE) { | |
18232ca6 | 1024 | struct timespec timeout = { 0, 10000000 }; // 10 msec |
1da177e4 LT |
1025 | |
1026 | /* we have payloads encapsulated in TS */ | |
46b4f7c1 | 1027 | dprintk("%s: alloc tsfeed\n", __func__); |
1da177e4 LT |
1028 | ret = demux->allocate_ts_feed(demux, &priv->tsfeed, dvb_net_ts_callback); |
1029 | if (ret < 0) { | |
1030 | printk("%s: could not allocate ts feed\n", dev->name); | |
1130ca45 | 1031 | goto error; |
1da177e4 LT |
1032 | } |
1033 | ||
1034 | /* Set netdevice pointer for ts decaps callback. */ | |
1035 | priv->tsfeed->priv = (void *)dev; | |
18232ca6 CP |
1036 | ret = priv->tsfeed->set(priv->tsfeed, |
1037 | priv->pid, /* pid */ | |
1038 | TS_PACKET, /* type */ | |
1039 | DMX_TS_PES_OTHER, /* pes type */ | |
1da177e4 | 1040 | 32768, /* circular buffer size */ |
18232ca6 CP |
1041 | timeout /* timeout */ |
1042 | ); | |
1da177e4 LT |
1043 | |
1044 | if (ret < 0) { | |
1045 | printk("%s: could not set ts feed\n", dev->name); | |
1046 | priv->demux->release_ts_feed(priv->demux, priv->tsfeed); | |
1047 | priv->tsfeed = NULL; | |
1130ca45 | 1048 | goto error; |
1da177e4 LT |
1049 | } |
1050 | ||
46b4f7c1 | 1051 | dprintk("%s: start filtering\n", __func__); |
1da177e4 LT |
1052 | priv->tsfeed->start_filtering(priv->tsfeed); |
1053 | } else | |
1130ca45 | 1054 | ret = -EINVAL; |
1da177e4 | 1055 | |
1130ca45 | 1056 | error: |
3593cab5 | 1057 | mutex_unlock(&priv->mutex); |
1130ca45 | 1058 | return ret; |
1da177e4 LT |
1059 | } |
1060 | ||
1061 | static int dvb_net_feed_stop(struct net_device *dev) | |
1062 | { | |
0c53c70f | 1063 | struct dvb_net_priv *priv = dev->priv; |
1130ca45 | 1064 | int i, ret = 0; |
1da177e4 | 1065 | |
46b4f7c1 | 1066 | dprintk("%s\n", __func__); |
3593cab5 | 1067 | mutex_lock(&priv->mutex); |
1da177e4 LT |
1068 | if (priv->feedtype == DVB_NET_FEEDTYPE_MPE) { |
1069 | if (priv->secfeed) { | |
1070 | if (priv->secfeed->is_filtering) { | |
46b4f7c1 | 1071 | dprintk("%s: stop secfeed\n", __func__); |
1da177e4 LT |
1072 | priv->secfeed->stop_filtering(priv->secfeed); |
1073 | } | |
1074 | ||
1075 | if (priv->secfilter) { | |
46b4f7c1 | 1076 | dprintk("%s: release secfilter\n", __func__); |
1da177e4 LT |
1077 | priv->secfeed->release_filter(priv->secfeed, |
1078 | priv->secfilter); | |
1079 | priv->secfilter=NULL; | |
1080 | } | |
1081 | ||
1082 | for (i=0; i<priv->multi_num; i++) { | |
1083 | if (priv->multi_secfilter[i]) { | |
1084 | dprintk("%s: release multi_filter[%d]\n", | |
46b4f7c1 | 1085 | __func__, i); |
1da177e4 LT |
1086 | priv->secfeed->release_filter(priv->secfeed, |
1087 | priv->multi_secfilter[i]); | |
1088 | priv->multi_secfilter[i] = NULL; | |
1089 | } | |
1090 | } | |
1091 | ||
1092 | priv->demux->release_section_feed(priv->demux, priv->secfeed); | |
1093 | priv->secfeed = NULL; | |
1094 | } else | |
1095 | printk("%s: no feed to stop\n", dev->name); | |
1096 | } else if (priv->feedtype == DVB_NET_FEEDTYPE_ULE) { | |
1097 | if (priv->tsfeed) { | |
1098 | if (priv->tsfeed->is_filtering) { | |
46b4f7c1 | 1099 | dprintk("%s: stop tsfeed\n", __func__); |
1da177e4 LT |
1100 | priv->tsfeed->stop_filtering(priv->tsfeed); |
1101 | } | |
1102 | priv->demux->release_ts_feed(priv->demux, priv->tsfeed); | |
1103 | priv->tsfeed = NULL; | |
1104 | } | |
1105 | else | |
1106 | printk("%s: no ts feed to stop\n", dev->name); | |
1107 | } else | |
1130ca45 | 1108 | ret = -EINVAL; |
3593cab5 | 1109 | mutex_unlock(&priv->mutex); |
1130ca45 | 1110 | return ret; |
1da177e4 LT |
1111 | } |
1112 | ||
1113 | ||
1114 | static int dvb_set_mc_filter (struct net_device *dev, struct dev_mc_list *mc) | |
1115 | { | |
0c53c70f | 1116 | struct dvb_net_priv *priv = dev->priv; |
1da177e4 LT |
1117 | |
1118 | if (priv->multi_num == DVB_NET_MULTICAST_MAX) | |
1119 | return -ENOMEM; | |
1120 | ||
1121 | memcpy(priv->multi_macs[priv->multi_num], mc->dmi_addr, 6); | |
1122 | ||
1123 | priv->multi_num++; | |
1124 | return 0; | |
1125 | } | |
1126 | ||
1127 | ||
c4028958 | 1128 | static void wq_set_multicast_list (struct work_struct *work) |
1da177e4 | 1129 | { |
c4028958 DH |
1130 | struct dvb_net_priv *priv = |
1131 | container_of(work, struct dvb_net_priv, set_multicast_list_wq); | |
1132 | struct net_device *dev = priv->net; | |
1da177e4 LT |
1133 | |
1134 | dvb_net_feed_stop(dev); | |
1da177e4 | 1135 | priv->rx_mode = RX_MODE_UNI; |
932ff279 | 1136 | netif_tx_lock_bh(dev); |
1da177e4 LT |
1137 | |
1138 | if (dev->flags & IFF_PROMISC) { | |
1139 | dprintk("%s: promiscuous mode\n", dev->name); | |
1140 | priv->rx_mode = RX_MODE_PROMISC; | |
1141 | } else if ((dev->flags & IFF_ALLMULTI)) { | |
1142 | dprintk("%s: allmulti mode\n", dev->name); | |
1143 | priv->rx_mode = RX_MODE_ALL_MULTI; | |
1144 | } else if (dev->mc_count) { | |
1145 | int mci; | |
1146 | struct dev_mc_list *mc; | |
1147 | ||
1148 | dprintk("%s: set_mc_list, %d entries\n", | |
1149 | dev->name, dev->mc_count); | |
1150 | ||
1151 | priv->rx_mode = RX_MODE_MULTI; | |
1152 | priv->multi_num = 0; | |
1153 | ||
1154 | for (mci = 0, mc=dev->mc_list; | |
1155 | mci < dev->mc_count; | |
1156 | mc = mc->next, mci++) { | |
1157 | dvb_set_mc_filter(dev, mc); | |
1158 | } | |
1159 | } | |
1160 | ||
932ff279 | 1161 | netif_tx_unlock_bh(dev); |
1da177e4 LT |
1162 | dvb_net_feed_start(dev); |
1163 | } | |
1164 | ||
1165 | ||
1166 | static void dvb_net_set_multicast_list (struct net_device *dev) | |
1167 | { | |
0c53c70f | 1168 | struct dvb_net_priv *priv = dev->priv; |
1da177e4 LT |
1169 | schedule_work(&priv->set_multicast_list_wq); |
1170 | } | |
1171 | ||
1172 | ||
c4028958 | 1173 | static void wq_restart_net_feed (struct work_struct *work) |
1da177e4 | 1174 | { |
c4028958 DH |
1175 | struct dvb_net_priv *priv = |
1176 | container_of(work, struct dvb_net_priv, restart_net_feed_wq); | |
1177 | struct net_device *dev = priv->net; | |
1da177e4 LT |
1178 | |
1179 | if (netif_running(dev)) { | |
1180 | dvb_net_feed_stop(dev); | |
1181 | dvb_net_feed_start(dev); | |
1182 | } | |
1183 | } | |
1184 | ||
1185 | ||
1186 | static int dvb_net_set_mac (struct net_device *dev, void *p) | |
1187 | { | |
0c53c70f | 1188 | struct dvb_net_priv *priv = dev->priv; |
1da177e4 LT |
1189 | struct sockaddr *addr=p; |
1190 | ||
1191 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | |
1192 | ||
1193 | if (netif_running(dev)) | |
1194 | schedule_work(&priv->restart_net_feed_wq); | |
1195 | ||
1196 | return 0; | |
1197 | } | |
1198 | ||
1199 | ||
1200 | static int dvb_net_open(struct net_device *dev) | |
1201 | { | |
0c53c70f | 1202 | struct dvb_net_priv *priv = dev->priv; |
1da177e4 LT |
1203 | |
1204 | priv->in_use++; | |
1205 | dvb_net_feed_start(dev); | |
1206 | return 0; | |
1207 | } | |
1208 | ||
1209 | ||
1210 | static int dvb_net_stop(struct net_device *dev) | |
1211 | { | |
0c53c70f | 1212 | struct dvb_net_priv *priv = dev->priv; |
1da177e4 LT |
1213 | |
1214 | priv->in_use--; | |
afd1a0c9 | 1215 | return dvb_net_feed_stop(dev); |
1da177e4 LT |
1216 | } |
1217 | ||
1218 | static struct net_device_stats * dvb_net_get_stats(struct net_device *dev) | |
1219 | { | |
afd1a0c9 | 1220 | return &((struct dvb_net_priv*) dev->priv)->stats; |
1da177e4 LT |
1221 | } |
1222 | ||
3b04ddde SH |
1223 | static const struct header_ops dvb_header_ops = { |
1224 | .create = eth_header, | |
1225 | .parse = eth_header_parse, | |
1226 | .rebuild = eth_rebuild_header, | |
1227 | }; | |
1228 | ||
1da177e4 LT |
1229 | static void dvb_net_setup(struct net_device *dev) |
1230 | { | |
1231 | ether_setup(dev); | |
1232 | ||
3b04ddde | 1233 | dev->header_ops = &dvb_header_ops; |
1da177e4 LT |
1234 | dev->open = dvb_net_open; |
1235 | dev->stop = dvb_net_stop; | |
1236 | dev->hard_start_xmit = dvb_net_tx; | |
1237 | dev->get_stats = dvb_net_get_stats; | |
1238 | dev->set_multicast_list = dvb_net_set_multicast_list; | |
1239 | dev->set_mac_address = dvb_net_set_mac; | |
1240 | dev->mtu = 4096; | |
1241 | dev->mc_count = 0; | |
3b04ddde | 1242 | |
1da177e4 LT |
1243 | dev->flags |= IFF_NOARP; |
1244 | } | |
1245 | ||
1246 | static int get_if(struct dvb_net *dvbnet) | |
1247 | { | |
1248 | int i; | |
1249 | ||
1250 | for (i=0; i<DVB_NET_DEVICES_MAX; i++) | |
1251 | if (!dvbnet->state[i]) | |
1252 | break; | |
1253 | ||
1254 | if (i == DVB_NET_DEVICES_MAX) | |
1255 | return -1; | |
1256 | ||
1257 | dvbnet->state[i]=1; | |
1258 | return i; | |
1259 | } | |
1260 | ||
1261 | static int dvb_net_add_if(struct dvb_net *dvbnet, u16 pid, u8 feedtype) | |
1262 | { | |
1263 | struct net_device *net; | |
1264 | struct dvb_net_priv *priv; | |
1265 | int result; | |
1266 | int if_num; | |
1267 | ||
1268 | if (feedtype != DVB_NET_FEEDTYPE_MPE && feedtype != DVB_NET_FEEDTYPE_ULE) | |
1269 | return -EINVAL; | |
1270 | if ((if_num = get_if(dvbnet)) < 0) | |
1271 | return -EINVAL; | |
1272 | ||
1273 | net = alloc_netdev(sizeof(struct dvb_net_priv), "dvb", dvb_net_setup); | |
1274 | if (!net) | |
1275 | return -ENOMEM; | |
1276 | ||
1277 | if (dvbnet->dvbdev->id) | |
1278 | snprintf(net->name, IFNAMSIZ, "dvb%d%u%d", | |
1279 | dvbnet->dvbdev->adapter->num, dvbnet->dvbdev->id, if_num); | |
1280 | else | |
1281 | /* compatibility fix to keep dvb0_0 format */ | |
1282 | snprintf(net->name, IFNAMSIZ, "dvb%d_%d", | |
1283 | dvbnet->dvbdev->adapter->num, if_num); | |
1284 | ||
1285 | net->addr_len = 6; | |
1286 | memcpy(net->dev_addr, dvbnet->dvbdev->adapter->proposed_mac, 6); | |
1287 | ||
1288 | dvbnet->device[if_num] = net; | |
1289 | ||
1290 | priv = net->priv; | |
c4028958 | 1291 | priv->net = net; |
1da177e4 LT |
1292 | priv->demux = dvbnet->demux; |
1293 | priv->pid = pid; | |
1294 | priv->rx_mode = RX_MODE_UNI; | |
1295 | priv->need_pusi = 1; | |
1296 | priv->tscc = 0; | |
1297 | priv->feedtype = feedtype; | |
1298 | reset_ule(priv); | |
1299 | ||
c4028958 DH |
1300 | INIT_WORK(&priv->set_multicast_list_wq, wq_set_multicast_list); |
1301 | INIT_WORK(&priv->restart_net_feed_wq, wq_restart_net_feed); | |
3593cab5 | 1302 | mutex_init(&priv->mutex); |
1da177e4 LT |
1303 | |
1304 | net->base_addr = pid; | |
1305 | ||
1306 | if ((result = register_netdev(net)) < 0) { | |
1307 | dvbnet->device[if_num] = NULL; | |
1308 | free_netdev(net); | |
1309 | return result; | |
1310 | } | |
1311 | printk("dvb_net: created network interface %s\n", net->name); | |
1312 | ||
1313 | return if_num; | |
1314 | } | |
1315 | ||
400b7083 | 1316 | static int dvb_net_remove_if(struct dvb_net *dvbnet, unsigned long num) |
1da177e4 LT |
1317 | { |
1318 | struct net_device *net = dvbnet->device[num]; | |
1319 | struct dvb_net_priv *priv; | |
1320 | ||
1321 | if (!dvbnet->state[num]) | |
1322 | return -EINVAL; | |
1323 | priv = net->priv; | |
1324 | if (priv->in_use) | |
1325 | return -EBUSY; | |
1326 | ||
1327 | dvb_net_stop(net); | |
1328 | flush_scheduled_work(); | |
1329 | printk("dvb_net: removed network interface %s\n", net->name); | |
1330 | unregister_netdev(net); | |
1331 | dvbnet->state[num]=0; | |
1332 | dvbnet->device[num] = NULL; | |
1333 | free_netdev(net); | |
1334 | ||
1335 | return 0; | |
1336 | } | |
1337 | ||
1338 | static int dvb_net_do_ioctl(struct inode *inode, struct file *file, | |
1339 | unsigned int cmd, void *parg) | |
1340 | { | |
0c53c70f JS |
1341 | struct dvb_device *dvbdev = file->private_data; |
1342 | struct dvb_net *dvbnet = dvbdev->priv; | |
1da177e4 LT |
1343 | |
1344 | if (((file->f_flags&O_ACCMODE)==O_RDONLY)) | |
1345 | return -EPERM; | |
1346 | ||
1347 | switch (cmd) { | |
1348 | case NET_ADD_IF: | |
1349 | { | |
0c53c70f | 1350 | struct dvb_net_if *dvbnetif = parg; |
1da177e4 LT |
1351 | int result; |
1352 | ||
1353 | if (!capable(CAP_SYS_ADMIN)) | |
1354 | return -EPERM; | |
1355 | ||
1356 | if (!try_module_get(dvbdev->adapter->module)) | |
1357 | return -EPERM; | |
1358 | ||
1359 | result=dvb_net_add_if(dvbnet, dvbnetif->pid, dvbnetif->feedtype); | |
1360 | if (result<0) { | |
1361 | module_put(dvbdev->adapter->module); | |
1362 | return result; | |
1363 | } | |
1364 | dvbnetif->if_num=result; | |
1365 | break; | |
1366 | } | |
1367 | case NET_GET_IF: | |
1368 | { | |
1369 | struct net_device *netdev; | |
1370 | struct dvb_net_priv *priv_data; | |
0c53c70f | 1371 | struct dvb_net_if *dvbnetif = parg; |
1da177e4 LT |
1372 | |
1373 | if (dvbnetif->if_num >= DVB_NET_DEVICES_MAX || | |
1374 | !dvbnet->state[dvbnetif->if_num]) | |
1375 | return -EINVAL; | |
1376 | ||
1377 | netdev = dvbnet->device[dvbnetif->if_num]; | |
1378 | ||
0c53c70f | 1379 | priv_data = netdev->priv; |
1da177e4 LT |
1380 | dvbnetif->pid=priv_data->pid; |
1381 | dvbnetif->feedtype=priv_data->feedtype; | |
1382 | break; | |
1383 | } | |
1384 | case NET_REMOVE_IF: | |
1385 | { | |
1386 | int ret; | |
1387 | ||
1388 | if (!capable(CAP_SYS_ADMIN)) | |
1389 | return -EPERM; | |
e18828e4 | 1390 | if ((unsigned long) parg >= DVB_NET_DEVICES_MAX) |
1da177e4 | 1391 | return -EINVAL; |
e18828e4 | 1392 | ret = dvb_net_remove_if(dvbnet, (unsigned long) parg); |
1da177e4 LT |
1393 | if (!ret) |
1394 | module_put(dvbdev->adapter->module); | |
1395 | return ret; | |
1396 | } | |
1397 | ||
1398 | /* binary compatiblity cruft */ | |
1399 | case __NET_ADD_IF_OLD: | |
1400 | { | |
0c53c70f | 1401 | struct __dvb_net_if_old *dvbnetif = parg; |
1da177e4 LT |
1402 | int result; |
1403 | ||
1404 | if (!capable(CAP_SYS_ADMIN)) | |
1405 | return -EPERM; | |
1406 | ||
1407 | if (!try_module_get(dvbdev->adapter->module)) | |
1408 | return -EPERM; | |
1409 | ||
1410 | result=dvb_net_add_if(dvbnet, dvbnetif->pid, DVB_NET_FEEDTYPE_MPE); | |
1411 | if (result<0) { | |
1412 | module_put(dvbdev->adapter->module); | |
1413 | return result; | |
1414 | } | |
1415 | dvbnetif->if_num=result; | |
1416 | break; | |
1417 | } | |
1418 | case __NET_GET_IF_OLD: | |
1419 | { | |
1420 | struct net_device *netdev; | |
1421 | struct dvb_net_priv *priv_data; | |
0c53c70f | 1422 | struct __dvb_net_if_old *dvbnetif = parg; |
1da177e4 LT |
1423 | |
1424 | if (dvbnetif->if_num >= DVB_NET_DEVICES_MAX || | |
1425 | !dvbnet->state[dvbnetif->if_num]) | |
1426 | return -EINVAL; | |
1427 | ||
1428 | netdev = dvbnet->device[dvbnetif->if_num]; | |
1429 | ||
0c53c70f | 1430 | priv_data = netdev->priv; |
1da177e4 LT |
1431 | dvbnetif->pid=priv_data->pid; |
1432 | break; | |
1433 | } | |
1434 | default: | |
1435 | return -ENOTTY; | |
1436 | } | |
1437 | return 0; | |
1438 | } | |
1439 | ||
1440 | static int dvb_net_ioctl(struct inode *inode, struct file *file, | |
1441 | unsigned int cmd, unsigned long arg) | |
1442 | { | |
1443 | return dvb_usercopy(inode, file, cmd, arg, dvb_net_do_ioctl); | |
1444 | } | |
1445 | ||
2c4d3364 MR |
1446 | static int dvb_net_close(struct inode *inode, struct file *file) |
1447 | { | |
1448 | struct dvb_device *dvbdev = file->private_data; | |
1449 | struct dvb_net *dvbnet = dvbdev->priv; | |
1450 | ||
82e67246 | 1451 | dvb_generic_release(inode, file); |
2c4d3364 | 1452 | |
82e67246 | 1453 | if(dvbdev->users == 1 && dvbnet->exit == 1) { |
2c4d3364 MR |
1454 | fops_put(file->f_op); |
1455 | file->f_op = NULL; | |
1456 | wake_up(&dvbdev->wait_queue); | |
1457 | } | |
1458 | return 0; | |
1459 | } | |
1460 | ||
1461 | ||
1da177e4 LT |
1462 | static struct file_operations dvb_net_fops = { |
1463 | .owner = THIS_MODULE, | |
1464 | .ioctl = dvb_net_ioctl, | |
1465 | .open = dvb_generic_open, | |
2c4d3364 | 1466 | .release = dvb_net_close, |
1da177e4 LT |
1467 | }; |
1468 | ||
1469 | static struct dvb_device dvbdev_net = { | |
afd1a0c9 MCC |
1470 | .priv = NULL, |
1471 | .users = 1, | |
1472 | .writers = 1, | |
1473 | .fops = &dvb_net_fops, | |
1da177e4 LT |
1474 | }; |
1475 | ||
1476 | ||
1477 | void dvb_net_release (struct dvb_net *dvbnet) | |
1478 | { | |
1479 | int i; | |
1480 | ||
2c4d3364 MR |
1481 | dvbnet->exit = 1; |
1482 | if (dvbnet->dvbdev->users < 1) | |
1483 | wait_event(dvbnet->dvbdev->wait_queue, | |
1484 | dvbnet->dvbdev->users==1); | |
1485 | ||
1da177e4 LT |
1486 | dvb_unregister_device(dvbnet->dvbdev); |
1487 | ||
1488 | for (i=0; i<DVB_NET_DEVICES_MAX; i++) { | |
1489 | if (!dvbnet->state[i]) | |
1490 | continue; | |
1491 | dvb_net_remove_if(dvbnet, i); | |
1492 | } | |
1493 | } | |
1494 | EXPORT_SYMBOL(dvb_net_release); | |
1495 | ||
1496 | ||
1497 | int dvb_net_init (struct dvb_adapter *adap, struct dvb_net *dvbnet, | |
1498 | struct dmx_demux *dmx) | |
1499 | { | |
1500 | int i; | |
1501 | ||
1502 | dvbnet->demux = dmx; | |
1503 | ||
1504 | for (i=0; i<DVB_NET_DEVICES_MAX; i++) | |
1505 | dvbnet->state[i] = 0; | |
1506 | ||
1507 | dvb_register_device (adap, &dvbnet->dvbdev, &dvbdev_net, | |
1508 | dvbnet, DVB_DEVICE_NET); | |
1509 | ||
1510 | return 0; | |
1511 | } | |
1512 | EXPORT_SYMBOL(dvb_net_init); |