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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; | |
1da177e4 | 128 | u16 pid; |
c4028958 | 129 | struct net_device *net; |
1da177e4 LT |
130 | struct dvb_net *host; |
131 | struct dmx_demux *demux; | |
132 | struct dmx_section_feed *secfeed; | |
133 | struct dmx_section_filter *secfilter; | |
134 | struct dmx_ts_feed *tsfeed; | |
135 | int multi_num; | |
136 | struct dmx_section_filter *multi_secfilter[DVB_NET_MULTICAST_MAX]; | |
137 | unsigned char multi_macs[DVB_NET_MULTICAST_MAX][6]; | |
138 | int rx_mode; | |
139 | #define RX_MODE_UNI 0 | |
140 | #define RX_MODE_MULTI 1 | |
141 | #define RX_MODE_ALL_MULTI 2 | |
142 | #define RX_MODE_PROMISC 3 | |
143 | struct work_struct set_multicast_list_wq; | |
144 | struct work_struct restart_net_feed_wq; | |
145 | unsigned char feedtype; /* Either FEED_TYPE_ or FEED_TYPE_ULE */ | |
146 | int need_pusi; /* Set to 1, if synchronization on PUSI required. */ | |
147 | unsigned char tscc; /* TS continuity counter after sync on PUSI. */ | |
148 | struct sk_buff *ule_skb; /* ULE SNDU decodes into this buffer. */ | |
149 | unsigned char *ule_next_hdr; /* Pointer into skb to next ULE extension header. */ | |
150 | unsigned short ule_sndu_len; /* ULE SNDU length in bytes, w/o D-Bit. */ | |
151 | unsigned short ule_sndu_type; /* ULE SNDU type field, complete. */ | |
152 | unsigned char ule_sndu_type_1; /* ULE SNDU type field, if split across 2 TS cells. */ | |
153 | unsigned char ule_dbit; /* Whether the DestMAC address present | |
154 | * or not (bit is set). */ | |
155 | unsigned char ule_bridged; /* Whether the ULE_BRIDGED extension header was found. */ | |
156 | int ule_sndu_remain; /* Nr. of bytes still required for current ULE SNDU. */ | |
157 | unsigned long ts_count; /* Current ts cell counter. */ | |
3593cab5 | 158 | struct mutex mutex; |
1da177e4 LT |
159 | }; |
160 | ||
161 | ||
162 | /** | |
163 | * Determine the packet's protocol ID. The rule here is that we | |
164 | * assume 802.3 if the type field is short enough to be a length. | |
165 | * This is normal practice and works for any 'now in use' protocol. | |
166 | * | |
167 | * stolen from eth.c out of the linux kernel, hacked for dvb-device | |
168 | * by Michael Holzt <kju@debian.org> | |
169 | */ | |
12fbcef1 | 170 | static __be16 dvb_net_eth_type_trans(struct sk_buff *skb, |
1da177e4 LT |
171 | struct net_device *dev) |
172 | { | |
173 | struct ethhdr *eth; | |
174 | unsigned char *rawp; | |
175 | ||
98e399f8 | 176 | skb_reset_mac_header(skb); |
1da177e4 | 177 | skb_pull(skb,dev->hard_header_len); |
1da177e4 | 178 | eth = eth_hdr(skb); |
1da177e4 LT |
179 | |
180 | if (*eth->h_dest & 1) { | |
181 | if(memcmp(eth->h_dest,dev->broadcast, ETH_ALEN)==0) | |
182 | skb->pkt_type=PACKET_BROADCAST; | |
183 | else | |
184 | skb->pkt_type=PACKET_MULTICAST; | |
185 | } | |
186 | ||
187 | if (ntohs(eth->h_proto) >= 1536) | |
188 | return eth->h_proto; | |
189 | ||
190 | rawp = skb->data; | |
191 | ||
192 | /** | |
193 | * This is a magic hack to spot IPX packets. Older Novell breaks | |
194 | * the protocol design and runs IPX over 802.3 without an 802.2 LLC | |
195 | * layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This | |
196 | * won't work for fault tolerant netware but does for the rest. | |
197 | */ | |
198 | if (*(unsigned short *)rawp == 0xFFFF) | |
199 | return htons(ETH_P_802_3); | |
200 | ||
201 | /** | |
202 | * Real 802.2 LLC | |
203 | */ | |
204 | return htons(ETH_P_802_2); | |
205 | } | |
206 | ||
207 | #define TS_SZ 188 | |
208 | #define TS_SYNC 0x47 | |
209 | #define TS_TEI 0x80 | |
210 | #define TS_SC 0xC0 | |
211 | #define TS_PUSI 0x40 | |
212 | #define TS_AF_A 0x20 | |
213 | #define TS_AF_D 0x10 | |
214 | ||
215 | /* ULE Extension Header handlers. */ | |
216 | ||
217 | #define ULE_TEST 0 | |
218 | #define ULE_BRIDGED 1 | |
219 | ||
18232ca6 CP |
220 | #define ULE_OPTEXTHDR_PADDING 0 |
221 | ||
1da177e4 LT |
222 | static int ule_test_sndu( struct dvb_net_priv *p ) |
223 | { | |
224 | return -1; | |
225 | } | |
226 | ||
227 | static int ule_bridged_sndu( struct dvb_net_priv *p ) | |
228 | { | |
18232ca6 CP |
229 | struct ethhdr *hdr = (struct ethhdr*) p->ule_next_hdr; |
230 | if(ntohs(hdr->h_proto) < 1536) { | |
231 | int framelen = p->ule_sndu_len - ((p->ule_next_hdr+sizeof(struct ethhdr)) - p->ule_skb->data); | |
232 | /* A frame Type < 1536 for a bridged frame, introduces a LLC Length field. */ | |
233 | if(framelen != ntohs(hdr->h_proto)) { | |
234 | return -1; | |
235 | } | |
236 | } | |
237 | /* Note: | |
238 | * From RFC4326: | |
239 | * "A bridged SNDU is a Mandatory Extension Header of Type 1. | |
240 | * It must be the final (or only) extension header specified in the header chain of a SNDU." | |
241 | * The 'ule_bridged' flag will cause the extension header processing loop to terminate. | |
1da177e4 LT |
242 | */ |
243 | p->ule_bridged = 1; | |
244 | return 0; | |
245 | } | |
246 | ||
18232ca6 CP |
247 | static int ule_exthdr_padding(struct dvb_net_priv *p) |
248 | { | |
249 | return 0; | |
250 | } | |
1da177e4 LT |
251 | |
252 | /** Handle ULE extension headers. | |
253 | * Function is called after a successful CRC32 verification of an ULE SNDU to complete its decoding. | |
254 | * Returns: >= 0: nr. of bytes consumed by next extension header | |
255 | * -1: Mandatory extension header that is not recognized or TEST SNDU; discard. | |
256 | */ | |
257 | static int handle_one_ule_extension( struct dvb_net_priv *p ) | |
258 | { | |
259 | /* Table of mandatory extension header handlers. The header type is the index. */ | |
260 | static int (*ule_mandatory_ext_handlers[255])( struct dvb_net_priv *p ) = | |
261 | { [0] = ule_test_sndu, [1] = ule_bridged_sndu, [2] = NULL, }; | |
262 | ||
263 | /* Table of optional extension header handlers. The header type is the index. */ | |
18232ca6 CP |
264 | static int (*ule_optional_ext_handlers[255])( struct dvb_net_priv *p ) = |
265 | { [0] = ule_exthdr_padding, [1] = NULL, }; | |
1da177e4 LT |
266 | |
267 | int ext_len = 0; | |
268 | unsigned char hlen = (p->ule_sndu_type & 0x0700) >> 8; | |
269 | unsigned char htype = p->ule_sndu_type & 0x00FF; | |
270 | ||
271 | /* Discriminate mandatory and optional extension headers. */ | |
272 | if (hlen == 0) { | |
273 | /* Mandatory extension header */ | |
274 | if (ule_mandatory_ext_handlers[htype]) { | |
275 | ext_len = ule_mandatory_ext_handlers[htype]( p ); | |
18232ca6 CP |
276 | if(ext_len >= 0) { |
277 | p->ule_next_hdr += ext_len; | |
278 | if (!p->ule_bridged) { | |
12fbcef1 | 279 | p->ule_sndu_type = ntohs(*(__be16 *)p->ule_next_hdr); |
18232ca6 CP |
280 | p->ule_next_hdr += 2; |
281 | } else { | |
12fbcef1 | 282 | p->ule_sndu_type = ntohs(*(__be16 *)(p->ule_next_hdr + ((p->ule_dbit ? 2 : 3) * ETH_ALEN))); |
18232ca6 CP |
283 | /* This assures the extension handling loop will terminate. */ |
284 | } | |
1da177e4 | 285 | } |
18232ca6 | 286 | // else: extension handler failed or SNDU should be discarded |
1da177e4 LT |
287 | } else |
288 | ext_len = -1; /* SNDU has to be discarded. */ | |
289 | } else { | |
290 | /* Optional extension header. Calculate the length. */ | |
18232ca6 | 291 | ext_len = hlen << 1; |
1da177e4 LT |
292 | /* Process the optional extension header according to its type. */ |
293 | if (ule_optional_ext_handlers[htype]) | |
294 | (void)ule_optional_ext_handlers[htype]( p ); | |
295 | p->ule_next_hdr += ext_len; | |
12fbcef1 | 296 | p->ule_sndu_type = ntohs( *(__be16 *)(p->ule_next_hdr-2) ); |
18232ca6 CP |
297 | /* |
298 | * note: the length of the next header type is included in the | |
299 | * length of THIS optional extension header | |
300 | */ | |
1da177e4 LT |
301 | } |
302 | ||
303 | return ext_len; | |
304 | } | |
305 | ||
306 | static int handle_ule_extensions( struct dvb_net_priv *p ) | |
307 | { | |
308 | int total_ext_len = 0, l; | |
309 | ||
310 | p->ule_next_hdr = p->ule_skb->data; | |
311 | do { | |
312 | l = handle_one_ule_extension( p ); | |
18232ca6 CP |
313 | if (l < 0) |
314 | return l; /* Stop extension header processing and discard SNDU. */ | |
1da177e4 | 315 | total_ext_len += l; |
18232ca6 CP |
316 | #ifdef ULE_DEBUG |
317 | dprintk("handle_ule_extensions: ule_next_hdr=%p, ule_sndu_type=%i, " | |
318 | "l=%i, total_ext_len=%i\n", p->ule_next_hdr, | |
319 | (int) p->ule_sndu_type, l, total_ext_len); | |
320 | #endif | |
1da177e4 LT |
321 | |
322 | } while (p->ule_sndu_type < 1536); | |
323 | ||
324 | return total_ext_len; | |
325 | } | |
326 | ||
327 | ||
328 | /** Prepare for a new ULE SNDU: reset the decoder state. */ | |
329 | static inline void reset_ule( struct dvb_net_priv *p ) | |
330 | { | |
331 | p->ule_skb = NULL; | |
332 | p->ule_next_hdr = NULL; | |
333 | p->ule_sndu_len = 0; | |
334 | p->ule_sndu_type = 0; | |
335 | p->ule_sndu_type_1 = 0; | |
336 | p->ule_sndu_remain = 0; | |
337 | p->ule_dbit = 0xFF; | |
338 | p->ule_bridged = 0; | |
339 | } | |
340 | ||
341 | /** | |
342 | * Decode ULE SNDUs according to draft-ietf-ipdvb-ule-03.txt from a sequence of | |
343 | * TS cells of a single PID. | |
344 | */ | |
345 | static void dvb_net_ule( struct net_device *dev, const u8 *buf, size_t buf_len ) | |
346 | { | |
0eade1f9 | 347 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 | 348 | unsigned long skipped = 0L; |
372280d2 TP |
349 | const u8 *ts, *ts_end, *from_where = NULL; |
350 | u8 ts_remain = 0, how_much = 0, new_ts = 1; | |
1da177e4 LT |
351 | struct ethhdr *ethh = NULL; |
352 | ||
353 | #ifdef ULE_DEBUG | |
354 | /* The code inside ULE_DEBUG keeps a history of the last 100 TS cells processed. */ | |
355 | static unsigned char ule_hist[100*TS_SZ]; | |
ff699e6b | 356 | static unsigned char *ule_where = ule_hist, ule_dump; |
1da177e4 LT |
357 | #endif |
358 | ||
1da177e4 LT |
359 | /* For all TS cells in current buffer. |
360 | * Appearently, we are called for every single TS cell. | |
361 | */ | |
372280d2 | 362 | for (ts = buf, ts_end = buf + buf_len; ts < ts_end; /* no default incr. */ ) { |
1da177e4 LT |
363 | |
364 | if (new_ts) { | |
365 | /* We are about to process a new TS cell. */ | |
366 | ||
367 | #ifdef ULE_DEBUG | |
368 | if (ule_where >= &ule_hist[100*TS_SZ]) ule_where = ule_hist; | |
369 | memcpy( ule_where, ts, TS_SZ ); | |
370 | if (ule_dump) { | |
371 | hexdump( ule_where, TS_SZ ); | |
372 | ule_dump = 0; | |
373 | } | |
374 | ule_where += TS_SZ; | |
375 | #endif | |
376 | ||
377 | /* Check TS error conditions: sync_byte, transport_error_indicator, scrambling_control . */ | |
378 | if ((ts[0] != TS_SYNC) || (ts[1] & TS_TEI) || ((ts[3] & TS_SC) != 0)) { | |
379 | printk(KERN_WARNING "%lu: Invalid TS cell: SYNC %#x, TEI %u, SC %#x.\n", | |
380 | priv->ts_count, ts[0], ts[1] & TS_TEI >> 7, ts[3] & 0xC0 >> 6); | |
381 | ||
382 | /* Drop partly decoded SNDU, reset state, resync on PUSI. */ | |
383 | if (priv->ule_skb) { | |
384 | dev_kfree_skb( priv->ule_skb ); | |
385 | /* Prepare for next SNDU. */ | |
fb875333 SH |
386 | dev->stats.rx_errors++; |
387 | dev->stats.rx_frame_errors++; | |
1da177e4 LT |
388 | } |
389 | reset_ule(priv); | |
390 | priv->need_pusi = 1; | |
391 | ||
392 | /* Continue with next TS cell. */ | |
393 | ts += TS_SZ; | |
394 | priv->ts_count++; | |
395 | continue; | |
396 | } | |
397 | ||
398 | ts_remain = 184; | |
399 | from_where = ts + 4; | |
400 | } | |
401 | /* Synchronize on PUSI, if required. */ | |
402 | if (priv->need_pusi) { | |
403 | if (ts[1] & TS_PUSI) { | |
404 | /* Find beginning of first ULE SNDU in current TS cell. */ | |
405 | /* Synchronize continuity counter. */ | |
406 | priv->tscc = ts[3] & 0x0F; | |
407 | /* There is a pointer field here. */ | |
408 | if (ts[4] > ts_remain) { | |
409 | printk(KERN_ERR "%lu: Invalid ULE packet " | |
410 | "(pointer field %d)\n", priv->ts_count, ts[4]); | |
411 | ts += TS_SZ; | |
412 | priv->ts_count++; | |
413 | continue; | |
414 | } | |
415 | /* Skip to destination of pointer field. */ | |
416 | from_where = &ts[5] + ts[4]; | |
417 | ts_remain -= 1 + ts[4]; | |
418 | skipped = 0; | |
419 | } else { | |
420 | skipped++; | |
421 | ts += TS_SZ; | |
422 | priv->ts_count++; | |
423 | continue; | |
424 | } | |
425 | } | |
426 | ||
1da177e4 | 427 | if (new_ts) { |
18232ca6 | 428 | /* Check continuity counter. */ |
1da177e4 LT |
429 | if ((ts[3] & 0x0F) == priv->tscc) |
430 | priv->tscc = (priv->tscc + 1) & 0x0F; | |
431 | else { | |
432 | /* TS discontinuity handling: */ | |
433 | printk(KERN_WARNING "%lu: TS discontinuity: got %#x, " | |
18232ca6 | 434 | "expected %#x.\n", priv->ts_count, ts[3] & 0x0F, priv->tscc); |
1da177e4 LT |
435 | /* Drop partly decoded SNDU, reset state, resync on PUSI. */ |
436 | if (priv->ule_skb) { | |
437 | dev_kfree_skb( priv->ule_skb ); | |
438 | /* Prepare for next SNDU. */ | |
439 | // reset_ule(priv); moved to below. | |
fb875333 SH |
440 | dev->stats.rx_errors++; |
441 | dev->stats.rx_frame_errors++; | |
1da177e4 LT |
442 | } |
443 | reset_ule(priv); | |
444 | /* skip to next PUSI. */ | |
445 | priv->need_pusi = 1; | |
1da177e4 LT |
446 | continue; |
447 | } | |
448 | /* If we still have an incomplete payload, but PUSI is | |
449 | * set; some TS cells are missing. | |
450 | * This is only possible here, if we missed exactly 16 TS | |
451 | * cells (continuity counter wrap). */ | |
452 | if (ts[1] & TS_PUSI) { | |
453 | if (! priv->need_pusi) { | |
18232ca6 | 454 | if (!(*from_where < (ts_remain-1)) || *from_where != priv->ule_sndu_remain) { |
1da177e4 LT |
455 | /* Pointer field is invalid. Drop this TS cell and any started ULE SNDU. */ |
456 | printk(KERN_WARNING "%lu: Invalid pointer " | |
457 | "field: %u.\n", priv->ts_count, *from_where); | |
458 | ||
459 | /* Drop partly decoded SNDU, reset state, resync on PUSI. */ | |
460 | if (priv->ule_skb) { | |
461 | dev_kfree_skb( priv->ule_skb ); | |
fb875333 SH |
462 | dev->stats.rx_errors++; |
463 | dev->stats.rx_frame_errors++; | |
1da177e4 LT |
464 | } |
465 | reset_ule(priv); | |
466 | priv->need_pusi = 1; | |
1da177e4 LT |
467 | continue; |
468 | } | |
469 | /* Skip pointer field (we're processing a | |
470 | * packed payload). */ | |
471 | from_where += 1; | |
472 | ts_remain -= 1; | |
473 | } else | |
474 | priv->need_pusi = 0; | |
475 | ||
476 | if (priv->ule_sndu_remain > 183) { | |
477 | /* Current SNDU lacks more data than there could be available in the | |
478 | * current TS cell. */ | |
fb875333 SH |
479 | dev->stats.rx_errors++; |
480 | dev->stats.rx_length_errors++; | |
1da177e4 LT |
481 | printk(KERN_WARNING "%lu: Expected %d more SNDU bytes, but " |
482 | "got PUSI (pf %d, ts_remain %d). Flushing incomplete payload.\n", | |
483 | priv->ts_count, priv->ule_sndu_remain, ts[4], ts_remain); | |
484 | dev_kfree_skb(priv->ule_skb); | |
485 | /* Prepare for next SNDU. */ | |
486 | reset_ule(priv); | |
487 | /* Resync: go to where pointer field points to: start of next ULE SNDU. */ | |
488 | from_where += ts[4]; | |
489 | ts_remain -= ts[4]; | |
490 | } | |
491 | } | |
492 | } | |
493 | ||
494 | /* Check if new payload needs to be started. */ | |
495 | if (priv->ule_skb == NULL) { | |
496 | /* Start a new payload with skb. | |
497 | * Find ULE header. It is only guaranteed that the | |
498 | * length field (2 bytes) is contained in the current | |
499 | * TS. | |
500 | * Check ts_remain has to be >= 2 here. */ | |
501 | if (ts_remain < 2) { | |
502 | printk(KERN_WARNING "Invalid payload packing: only %d " | |
503 | "bytes left in TS. Resyncing.\n", ts_remain); | |
504 | priv->ule_sndu_len = 0; | |
505 | priv->need_pusi = 1; | |
506 | continue; | |
507 | } | |
508 | ||
509 | if (! priv->ule_sndu_len) { | |
510 | /* Got at least two bytes, thus extrace the SNDU length. */ | |
511 | priv->ule_sndu_len = from_where[0] << 8 | from_where[1]; | |
512 | if (priv->ule_sndu_len & 0x8000) { | |
513 | /* D-Bit is set: no dest mac present. */ | |
514 | priv->ule_sndu_len &= 0x7FFF; | |
515 | priv->ule_dbit = 1; | |
516 | } else | |
517 | priv->ule_dbit = 0; | |
518 | ||
18232ca6 | 519 | if (priv->ule_sndu_len < 5) { |
1da177e4 LT |
520 | printk(KERN_WARNING "%lu: Invalid ULE SNDU length %u. " |
521 | "Resyncing.\n", priv->ts_count, priv->ule_sndu_len); | |
fb875333 SH |
522 | dev->stats.rx_errors++; |
523 | dev->stats.rx_length_errors++; | |
1da177e4 LT |
524 | priv->ule_sndu_len = 0; |
525 | priv->need_pusi = 1; | |
526 | new_ts = 1; | |
527 | ts += TS_SZ; | |
528 | priv->ts_count++; | |
529 | continue; | |
530 | } | |
531 | ts_remain -= 2; /* consume the 2 bytes SNDU length. */ | |
532 | from_where += 2; | |
533 | } | |
534 | ||
535 | /* | |
536 | * State of current TS: | |
537 | * ts_remain (remaining bytes in the current TS cell) | |
538 | * 0 ule_type is not available now, we need the next TS cell | |
539 | * 1 the first byte of the ule_type is present | |
540 | * >=2 full ULE header present, maybe some payload data as well. | |
541 | */ | |
542 | switch (ts_remain) { | |
543 | case 1: | |
544 | priv->ule_sndu_type = from_where[0] << 8; | |
545 | priv->ule_sndu_type_1 = 1; /* first byte of ule_type is set. */ | |
546 | ts_remain -= 1; from_where += 1; | |
547 | /* Continue w/ next TS. */ | |
548 | case 0: | |
549 | new_ts = 1; | |
550 | ts += TS_SZ; | |
551 | priv->ts_count++; | |
552 | continue; | |
553 | ||
554 | default: /* complete ULE header is present in current TS. */ | |
555 | /* Extract ULE type field. */ | |
556 | if (priv->ule_sndu_type_1) { | |
557 | priv->ule_sndu_type |= from_where[0]; | |
558 | from_where += 1; /* points to payload start. */ | |
559 | ts_remain -= 1; | |
560 | } else { | |
561 | /* Complete type is present in new TS. */ | |
562 | priv->ule_sndu_type = from_where[0] << 8 | from_where[1]; | |
563 | from_where += 2; /* points to payload start. */ | |
564 | ts_remain -= 2; | |
565 | } | |
566 | break; | |
567 | } | |
568 | ||
569 | /* Allocate the skb (decoder target buffer) with the correct size, as follows: | |
570 | * prepare for the largest case: bridged SNDU with MAC address (dbit = 0). */ | |
571 | priv->ule_skb = dev_alloc_skb( priv->ule_sndu_len + ETH_HLEN + ETH_ALEN ); | |
572 | if (priv->ule_skb == NULL) { | |
573 | printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", | |
574 | dev->name); | |
fb875333 | 575 | dev->stats.rx_dropped++; |
1da177e4 LT |
576 | return; |
577 | } | |
578 | ||
579 | /* This includes the CRC32 _and_ dest mac, if !dbit. */ | |
580 | priv->ule_sndu_remain = priv->ule_sndu_len; | |
581 | priv->ule_skb->dev = dev; | |
582 | /* Leave space for Ethernet or bridged SNDU header (eth hdr plus one MAC addr). */ | |
583 | skb_reserve( priv->ule_skb, ETH_HLEN + ETH_ALEN ); | |
584 | } | |
585 | ||
586 | /* Copy data into our current skb. */ | |
587 | how_much = min(priv->ule_sndu_remain, (int)ts_remain); | |
588 | memcpy(skb_put(priv->ule_skb, how_much), from_where, how_much); | |
589 | priv->ule_sndu_remain -= how_much; | |
590 | ts_remain -= how_much; | |
591 | from_where += how_much; | |
592 | ||
593 | /* Check for complete payload. */ | |
594 | if (priv->ule_sndu_remain <= 0) { | |
595 | /* Check CRC32, we've got it in our skb already. */ | |
12fbcef1 AV |
596 | __be16 ulen = htons(priv->ule_sndu_len); |
597 | __be16 utype = htons(priv->ule_sndu_type); | |
27a884dc | 598 | const u8 *tail; |
1da177e4 LT |
599 | struct kvec iov[3] = { |
600 | { &ulen, sizeof ulen }, | |
601 | { &utype, sizeof utype }, | |
602 | { priv->ule_skb->data, priv->ule_skb->len - 4 } | |
603 | }; | |
dedcefb0 | 604 | u32 ule_crc = ~0L, expected_crc; |
1da177e4 LT |
605 | if (priv->ule_dbit) { |
606 | /* Set D-bit for CRC32 verification, | |
607 | * if it was set originally. */ | |
f51b10ef | 608 | ulen |= htons(0x8000); |
1da177e4 LT |
609 | } |
610 | ||
611 | ule_crc = iov_crc32(ule_crc, iov, 3); | |
27a884dc ACM |
612 | tail = skb_tail_pointer(priv->ule_skb); |
613 | expected_crc = *(tail - 4) << 24 | | |
614 | *(tail - 3) << 16 | | |
615 | *(tail - 2) << 8 | | |
616 | *(tail - 1); | |
1da177e4 | 617 | if (ule_crc != expected_crc) { |
5ef35be4 | 618 | printk(KERN_WARNING "%lu: CRC32 check FAILED: %08x / %08x, SNDU len %d type %#x, ts_remain %d, next 2: %x.\n", |
1da177e4 LT |
619 | 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); |
620 | ||
621 | #ifdef ULE_DEBUG | |
622 | hexdump( iov[0].iov_base, iov[0].iov_len ); | |
623 | hexdump( iov[1].iov_base, iov[1].iov_len ); | |
624 | hexdump( iov[2].iov_base, iov[2].iov_len ); | |
625 | ||
626 | if (ule_where == ule_hist) { | |
627 | hexdump( &ule_hist[98*TS_SZ], TS_SZ ); | |
628 | hexdump( &ule_hist[99*TS_SZ], TS_SZ ); | |
629 | } else if (ule_where == &ule_hist[TS_SZ]) { | |
630 | hexdump( &ule_hist[99*TS_SZ], TS_SZ ); | |
631 | hexdump( ule_hist, TS_SZ ); | |
632 | } else { | |
633 | hexdump( ule_where - TS_SZ - TS_SZ, TS_SZ ); | |
634 | hexdump( ule_where - TS_SZ, TS_SZ ); | |
635 | } | |
636 | ule_dump = 1; | |
637 | #endif | |
638 | ||
fb875333 SH |
639 | dev->stats.rx_errors++; |
640 | dev->stats.rx_crc_errors++; | |
1da177e4 LT |
641 | dev_kfree_skb(priv->ule_skb); |
642 | } else { | |
643 | /* CRC32 verified OK. */ | |
18232ca6 CP |
644 | u8 dest_addr[ETH_ALEN]; |
645 | static const u8 bc_addr[ETH_ALEN] = | |
646 | { [ 0 ... ETH_ALEN-1] = 0xff }; | |
647 | ||
648 | /* CRC32 was OK. Remove it from skb. */ | |
649 | priv->ule_skb->tail -= 4; | |
650 | priv->ule_skb->len -= 4; | |
651 | ||
652 | if (!priv->ule_dbit) { | |
653 | /* | |
654 | * The destination MAC address is the | |
655 | * next data in the skb. It comes | |
656 | * before any extension headers. | |
657 | * | |
658 | * Check if the payload of this SNDU | |
659 | * should be passed up the stack. | |
660 | */ | |
661 | register int drop = 0; | |
662 | if (priv->rx_mode != RX_MODE_PROMISC) { | |
663 | if (priv->ule_skb->data[0] & 0x01) { | |
664 | /* multicast or broadcast */ | |
665 | if (memcmp(priv->ule_skb->data, bc_addr, ETH_ALEN)) { | |
666 | /* multicast */ | |
667 | if (priv->rx_mode == RX_MODE_MULTI) { | |
668 | int i; | |
669 | for(i = 0; i < priv->multi_num && memcmp(priv->ule_skb->data, priv->multi_macs[i], ETH_ALEN); i++) | |
670 | ; | |
671 | if (i == priv->multi_num) | |
672 | drop = 1; | |
673 | } else if (priv->rx_mode != RX_MODE_ALL_MULTI) | |
674 | drop = 1; /* no broadcast; */ | |
675 | /* else: all multicast mode: accept all multicast packets */ | |
676 | } | |
677 | /* else: broadcast */ | |
678 | } | |
679 | else if (memcmp(priv->ule_skb->data, dev->dev_addr, ETH_ALEN)) | |
680 | drop = 1; | |
681 | /* else: destination address matches the MAC address of our receiver device */ | |
682 | } | |
c84e6036 | 683 | /* else: promiscuous mode; pass everything up the stack */ |
18232ca6 CP |
684 | |
685 | if (drop) { | |
686 | #ifdef ULE_DEBUG | |
687 | dprintk("Dropping SNDU: MAC destination address does not match: dest addr: "MAC_ADDR_PRINTFMT", dev addr: "MAC_ADDR_PRINTFMT"\n", | |
688 | MAX_ADDR_PRINTFMT_ARGS(priv->ule_skb->data), MAX_ADDR_PRINTFMT_ARGS(dev->dev_addr)); | |
689 | #endif | |
690 | dev_kfree_skb(priv->ule_skb); | |
691 | goto sndu_done; | |
692 | } | |
693 | else | |
694 | { | |
d626f62b ACM |
695 | skb_copy_from_linear_data(priv->ule_skb, |
696 | dest_addr, | |
697 | ETH_ALEN); | |
18232ca6 CP |
698 | skb_pull(priv->ule_skb, ETH_ALEN); |
699 | } | |
700 | } | |
701 | ||
1da177e4 LT |
702 | /* Handle ULE Extension Headers. */ |
703 | if (priv->ule_sndu_type < 1536) { | |
704 | /* There is an extension header. Handle it accordingly. */ | |
18232ca6 | 705 | int l = handle_ule_extensions(priv); |
1da177e4 LT |
706 | if (l < 0) { |
707 | /* Mandatory extension header unknown or TEST SNDU. Drop it. */ | |
708 | // printk( KERN_WARNING "Dropping SNDU, extension headers.\n" ); | |
18232ca6 | 709 | dev_kfree_skb(priv->ule_skb); |
1da177e4 LT |
710 | goto sndu_done; |
711 | } | |
18232ca6 | 712 | skb_pull(priv->ule_skb, l); |
1da177e4 LT |
713 | } |
714 | ||
18232ca6 CP |
715 | /* |
716 | * Construct/assure correct ethernet header. | |
717 | * Note: in bridged mode (priv->ule_bridged != | |
718 | * 0) we already have the (original) ethernet | |
719 | * header at the start of the payload (after | |
720 | * optional dest. address and any extension | |
721 | * headers). | |
722 | */ | |
723 | ||
724 | if (!priv->ule_bridged) { | |
725 | skb_push(priv->ule_skb, ETH_HLEN); | |
726 | ethh = (struct ethhdr *)priv->ule_skb->data; | |
727 | if (!priv->ule_dbit) { | |
728 | /* dest_addr buffer is only valid if priv->ule_dbit == 0 */ | |
729 | memcpy(ethh->h_dest, dest_addr, ETH_ALEN); | |
730 | memset(ethh->h_source, 0, ETH_ALEN); | |
1da177e4 | 731 | } |
18232ca6 CP |
732 | else /* zeroize source and dest */ |
733 | memset( ethh, 0, ETH_ALEN*2 ); | |
734 | ||
735 | ethh->h_proto = htons(priv->ule_sndu_type); | |
1da177e4 | 736 | } |
18232ca6 | 737 | /* else: skb is in correct state; nothing to do. */ |
1da177e4 LT |
738 | priv->ule_bridged = 0; |
739 | ||
740 | /* Stuff into kernel's protocol stack. */ | |
741 | priv->ule_skb->protocol = dvb_net_eth_type_trans(priv->ule_skb, dev); | |
742 | /* If D-bit is set (i.e. destination MAC address not present), | |
743 | * receive the packet anyhow. */ | |
744 | /* if (priv->ule_dbit && skb->pkt_type == PACKET_OTHERHOST) | |
745 | priv->ule_skb->pkt_type = PACKET_HOST; */ | |
fb875333 SH |
746 | dev->stats.rx_packets++; |
747 | dev->stats.rx_bytes += priv->ule_skb->len; | |
1da177e4 LT |
748 | netif_rx(priv->ule_skb); |
749 | } | |
750 | sndu_done: | |
751 | /* Prepare for next SNDU. */ | |
752 | reset_ule(priv); | |
753 | } | |
754 | ||
755 | /* More data in current TS (look at the bytes following the CRC32)? */ | |
756 | if (ts_remain >= 2 && *((unsigned short *)from_where) != 0xFFFF) { | |
757 | /* Next ULE SNDU starts right there. */ | |
758 | new_ts = 0; | |
759 | priv->ule_skb = NULL; | |
760 | priv->ule_sndu_type_1 = 0; | |
761 | priv->ule_sndu_len = 0; | |
762 | // printk(KERN_WARNING "More data in current TS: [%#x %#x %#x %#x]\n", | |
763 | // *(from_where + 0), *(from_where + 1), | |
764 | // *(from_where + 2), *(from_where + 3)); | |
765 | // printk(KERN_WARNING "ts @ %p, stopped @ %p:\n", ts, from_where + 0); | |
766 | // hexdump(ts, 188); | |
767 | } else { | |
768 | new_ts = 1; | |
769 | ts += TS_SZ; | |
770 | priv->ts_count++; | |
771 | if (priv->ule_skb == NULL) { | |
772 | priv->need_pusi = 1; | |
773 | priv->ule_sndu_type_1 = 0; | |
774 | priv->ule_sndu_len = 0; | |
775 | } | |
776 | } | |
777 | } /* for all available TS cells */ | |
778 | } | |
779 | ||
780 | static int dvb_net_ts_callback(const u8 *buffer1, size_t buffer1_len, | |
781 | const u8 *buffer2, size_t buffer2_len, | |
782 | struct dmx_ts_feed *feed, enum dmx_success success) | |
783 | { | |
0c53c70f | 784 | struct net_device *dev = feed->priv; |
1da177e4 | 785 | |
5fa1247a AV |
786 | if (buffer2) |
787 | printk(KERN_WARNING "buffer2 not NULL: %p.\n", buffer2); | |
1da177e4 LT |
788 | if (buffer1_len > 32768) |
789 | printk(KERN_WARNING "length > 32k: %zu.\n", buffer1_len); | |
790 | /* printk("TS callback: %u bytes, %u TS cells @ %p.\n", | |
afd1a0c9 | 791 | buffer1_len, buffer1_len / TS_SZ, buffer1); */ |
1da177e4 LT |
792 | dvb_net_ule(dev, buffer1, buffer1_len); |
793 | return 0; | |
794 | } | |
795 | ||
796 | ||
71be258b MK |
797 | static void dvb_net_sec(struct net_device *dev, |
798 | const u8 *pkt, int pkt_len) | |
1da177e4 | 799 | { |
afd1a0c9 MCC |
800 | u8 *eth; |
801 | struct sk_buff *skb; | |
fb875333 | 802 | struct net_device_stats *stats = &dev->stats; |
59142330 | 803 | int snap = 0; |
1da177e4 LT |
804 | |
805 | /* note: pkt_len includes a 32bit checksum */ | |
806 | if (pkt_len < 16) { | |
807 | printk("%s: IP/MPE packet length = %d too small.\n", | |
808 | dev->name, pkt_len); | |
809 | stats->rx_errors++; | |
810 | stats->rx_length_errors++; | |
811 | return; | |
812 | } | |
813 | /* it seems some ISPs manage to screw up here, so we have to | |
814 | * relax the error checks... */ | |
815 | #if 0 | |
816 | if ((pkt[5] & 0xfd) != 0xc1) { | |
817 | /* drop scrambled or broken packets */ | |
818 | #else | |
819 | if ((pkt[5] & 0x3c) != 0x00) { | |
820 | /* drop scrambled */ | |
821 | #endif | |
822 | stats->rx_errors++; | |
823 | stats->rx_crc_errors++; | |
824 | return; | |
825 | } | |
826 | if (pkt[5] & 0x02) { | |
59142330 JS |
827 | /* handle LLC/SNAP, see rfc-1042 */ |
828 | if (pkt_len < 24 || memcmp(&pkt[12], "\xaa\xaa\x03\0\0\0", 6)) { | |
829 | stats->rx_dropped++; | |
830 | return; | |
831 | } | |
832 | snap = 8; | |
afd1a0c9 | 833 | } |
1da177e4 LT |
834 | if (pkt[7]) { |
835 | /* FIXME: assemble datagram from multiple sections */ | |
836 | stats->rx_errors++; | |
837 | stats->rx_frame_errors++; | |
838 | return; | |
839 | } | |
840 | ||
841 | /* we have 14 byte ethernet header (ip header follows); | |
59142330 | 842 | * 12 byte MPE header; 4 byte checksum; + 2 byte alignment, 8 byte LLC/SNAP |
1da177e4 | 843 | */ |
59142330 | 844 | if (!(skb = dev_alloc_skb(pkt_len - 4 - 12 + 14 + 2 - snap))) { |
1da177e4 LT |
845 | //printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name); |
846 | stats->rx_dropped++; | |
847 | return; | |
848 | } | |
849 | skb_reserve(skb, 2); /* longword align L3 header */ | |
850 | skb->dev = dev; | |
851 | ||
852 | /* copy L3 payload */ | |
59142330 JS |
853 | eth = (u8 *) skb_put(skb, pkt_len - 12 - 4 + 14 - snap); |
854 | memcpy(eth + 14, pkt + 12 + snap, pkt_len - 12 - 4 - snap); | |
1da177e4 LT |
855 | |
856 | /* create ethernet header: */ | |
afd1a0c9 MCC |
857 | eth[0]=pkt[0x0b]; |
858 | eth[1]=pkt[0x0a]; | |
859 | eth[2]=pkt[0x09]; | |
860 | eth[3]=pkt[0x08]; | |
861 | eth[4]=pkt[0x04]; | |
862 | eth[5]=pkt[0x03]; | |
1da177e4 | 863 | |
afd1a0c9 | 864 | eth[6]=eth[7]=eth[8]=eth[9]=eth[10]=eth[11]=0; |
1da177e4 | 865 | |
59142330 JS |
866 | if (snap) { |
867 | eth[12] = pkt[18]; | |
868 | eth[13] = pkt[19]; | |
869 | } else { | |
870 | /* protocol numbers are from rfc-1700 or | |
871 | * http://www.iana.org/assignments/ethernet-numbers | |
872 | */ | |
873 | if (pkt[12] >> 4 == 6) { /* version field from IP header */ | |
874 | eth[12] = 0x86; /* IPv6 */ | |
875 | eth[13] = 0xdd; | |
876 | } else { | |
877 | eth[12] = 0x08; /* IPv4 */ | |
878 | eth[13] = 0x00; | |
879 | } | |
880 | } | |
1da177e4 LT |
881 | |
882 | skb->protocol = dvb_net_eth_type_trans(skb, dev); | |
883 | ||
884 | stats->rx_packets++; | |
885 | stats->rx_bytes+=skb->len; | |
afd1a0c9 | 886 | netif_rx(skb); |
1da177e4 LT |
887 | } |
888 | ||
889 | static int dvb_net_sec_callback(const u8 *buffer1, size_t buffer1_len, | |
890 | const u8 *buffer2, size_t buffer2_len, | |
891 | struct dmx_section_filter *filter, | |
892 | enum dmx_success success) | |
893 | { | |
afd1a0c9 | 894 | struct net_device *dev = filter->priv; |
1da177e4 LT |
895 | |
896 | /** | |
897 | * we rely on the DVB API definition where exactly one complete | |
898 | * section is delivered in buffer1 | |
899 | */ | |
04b35abe | 900 | dvb_net_sec (dev, buffer1, buffer1_len); |
1da177e4 LT |
901 | return 0; |
902 | } | |
903 | ||
904 | static int dvb_net_tx(struct sk_buff *skb, struct net_device *dev) | |
905 | { | |
906 | dev_kfree_skb(skb); | |
6ed10654 | 907 | return NETDEV_TX_OK; |
1da177e4 LT |
908 | } |
909 | ||
910 | static u8 mask_normal[6]={0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; | |
911 | static u8 mask_allmulti[6]={0xff, 0xff, 0xff, 0x00, 0x00, 0x00}; | |
912 | static u8 mac_allmulti[6]={0x01, 0x00, 0x5e, 0x00, 0x00, 0x00}; | |
913 | static u8 mask_promisc[6]={0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; | |
914 | ||
915 | static int dvb_net_filter_sec_set(struct net_device *dev, | |
916 | struct dmx_section_filter **secfilter, | |
917 | u8 *mac, u8 *mac_mask) | |
918 | { | |
0eade1f9 | 919 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
920 | int ret; |
921 | ||
922 | *secfilter=NULL; | |
923 | ret = priv->secfeed->allocate_filter(priv->secfeed, secfilter); | |
924 | if (ret<0) { | |
925 | printk("%s: could not get filter\n", dev->name); | |
926 | return ret; | |
927 | } | |
928 | ||
929 | (*secfilter)->priv=(void *) dev; | |
930 | ||
931 | memset((*secfilter)->filter_value, 0x00, DMX_MAX_FILTER_SIZE); | |
932 | memset((*secfilter)->filter_mask, 0x00, DMX_MAX_FILTER_SIZE); | |
933 | memset((*secfilter)->filter_mode, 0xff, DMX_MAX_FILTER_SIZE); | |
934 | ||
935 | (*secfilter)->filter_value[0]=0x3e; | |
936 | (*secfilter)->filter_value[3]=mac[5]; | |
937 | (*secfilter)->filter_value[4]=mac[4]; | |
938 | (*secfilter)->filter_value[8]=mac[3]; | |
939 | (*secfilter)->filter_value[9]=mac[2]; | |
940 | (*secfilter)->filter_value[10]=mac[1]; | |
941 | (*secfilter)->filter_value[11]=mac[0]; | |
942 | ||
943 | (*secfilter)->filter_mask[0] = 0xff; | |
944 | (*secfilter)->filter_mask[3] = mac_mask[5]; | |
945 | (*secfilter)->filter_mask[4] = mac_mask[4]; | |
946 | (*secfilter)->filter_mask[8] = mac_mask[3]; | |
947 | (*secfilter)->filter_mask[9] = mac_mask[2]; | |
948 | (*secfilter)->filter_mask[10] = mac_mask[1]; | |
949 | (*secfilter)->filter_mask[11]=mac_mask[0]; | |
950 | ||
951 | dprintk("%s: filter mac=%02x %02x %02x %02x %02x %02x\n", | |
952 | dev->name, mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); | |
953 | dprintk("%s: filter mask=%02x %02x %02x %02x %02x %02x\n", | |
954 | dev->name, mac_mask[0], mac_mask[1], mac_mask[2], | |
955 | mac_mask[3], mac_mask[4], mac_mask[5]); | |
956 | ||
957 | return 0; | |
958 | } | |
959 | ||
960 | static int dvb_net_feed_start(struct net_device *dev) | |
961 | { | |
1130ca45 | 962 | int ret = 0, i; |
0eade1f9 | 963 | struct dvb_net_priv *priv = netdev_priv(dev); |
afd1a0c9 MCC |
964 | struct dmx_demux *demux = priv->demux; |
965 | unsigned char *mac = (unsigned char *) dev->dev_addr; | |
1da177e4 | 966 | |
46b4f7c1 | 967 | dprintk("%s: rx_mode %i\n", __func__, priv->rx_mode); |
3593cab5 | 968 | mutex_lock(&priv->mutex); |
1da177e4 | 969 | if (priv->tsfeed || priv->secfeed || priv->secfilter || priv->multi_secfilter[0]) |
46b4f7c1 | 970 | printk("%s: BUG %d\n", __func__, __LINE__); |
1da177e4 LT |
971 | |
972 | priv->secfeed=NULL; | |
973 | priv->secfilter=NULL; | |
974 | priv->tsfeed = NULL; | |
975 | ||
976 | if (priv->feedtype == DVB_NET_FEEDTYPE_MPE) { | |
46b4f7c1 | 977 | dprintk("%s: alloc secfeed\n", __func__); |
1da177e4 LT |
978 | ret=demux->allocate_section_feed(demux, &priv->secfeed, |
979 | dvb_net_sec_callback); | |
980 | if (ret<0) { | |
981 | printk("%s: could not allocate section feed\n", dev->name); | |
1130ca45 | 982 | goto error; |
1da177e4 LT |
983 | } |
984 | ||
5d2cd163 | 985 | ret = priv->secfeed->set(priv->secfeed, priv->pid, 32768, 1); |
1da177e4 LT |
986 | |
987 | if (ret<0) { | |
988 | printk("%s: could not set section feed\n", dev->name); | |
989 | priv->demux->release_section_feed(priv->demux, priv->secfeed); | |
990 | priv->secfeed=NULL; | |
1130ca45 | 991 | goto error; |
1da177e4 LT |
992 | } |
993 | ||
994 | if (priv->rx_mode != RX_MODE_PROMISC) { | |
46b4f7c1 | 995 | dprintk("%s: set secfilter\n", __func__); |
1da177e4 LT |
996 | dvb_net_filter_sec_set(dev, &priv->secfilter, mac, mask_normal); |
997 | } | |
998 | ||
999 | switch (priv->rx_mode) { | |
1000 | case RX_MODE_MULTI: | |
1001 | for (i = 0; i < priv->multi_num; i++) { | |
46b4f7c1 | 1002 | dprintk("%s: set multi_secfilter[%d]\n", __func__, i); |
1da177e4 LT |
1003 | dvb_net_filter_sec_set(dev, &priv->multi_secfilter[i], |
1004 | priv->multi_macs[i], mask_normal); | |
1005 | } | |
1006 | break; | |
1007 | case RX_MODE_ALL_MULTI: | |
1008 | priv->multi_num=1; | |
46b4f7c1 | 1009 | dprintk("%s: set multi_secfilter[0]\n", __func__); |
1da177e4 LT |
1010 | dvb_net_filter_sec_set(dev, &priv->multi_secfilter[0], |
1011 | mac_allmulti, mask_allmulti); | |
1012 | break; | |
1013 | case RX_MODE_PROMISC: | |
1014 | priv->multi_num=0; | |
46b4f7c1 | 1015 | dprintk("%s: set secfilter\n", __func__); |
1da177e4 LT |
1016 | dvb_net_filter_sec_set(dev, &priv->secfilter, mac, mask_promisc); |
1017 | break; | |
1018 | } | |
1019 | ||
46b4f7c1 | 1020 | dprintk("%s: start filtering\n", __func__); |
1da177e4 LT |
1021 | priv->secfeed->start_filtering(priv->secfeed); |
1022 | } else if (priv->feedtype == DVB_NET_FEEDTYPE_ULE) { | |
18232ca6 | 1023 | struct timespec timeout = { 0, 10000000 }; // 10 msec |
1da177e4 LT |
1024 | |
1025 | /* we have payloads encapsulated in TS */ | |
46b4f7c1 | 1026 | dprintk("%s: alloc tsfeed\n", __func__); |
1da177e4 LT |
1027 | ret = demux->allocate_ts_feed(demux, &priv->tsfeed, dvb_net_ts_callback); |
1028 | if (ret < 0) { | |
1029 | printk("%s: could not allocate ts feed\n", dev->name); | |
1130ca45 | 1030 | goto error; |
1da177e4 LT |
1031 | } |
1032 | ||
1033 | /* Set netdevice pointer for ts decaps callback. */ | |
1034 | priv->tsfeed->priv = (void *)dev; | |
18232ca6 CP |
1035 | ret = priv->tsfeed->set(priv->tsfeed, |
1036 | priv->pid, /* pid */ | |
1037 | TS_PACKET, /* type */ | |
1038 | DMX_TS_PES_OTHER, /* pes type */ | |
1da177e4 | 1039 | 32768, /* circular buffer size */ |
18232ca6 CP |
1040 | timeout /* timeout */ |
1041 | ); | |
1da177e4 LT |
1042 | |
1043 | if (ret < 0) { | |
1044 | printk("%s: could not set ts feed\n", dev->name); | |
1045 | priv->demux->release_ts_feed(priv->demux, priv->tsfeed); | |
1046 | priv->tsfeed = NULL; | |
1130ca45 | 1047 | goto error; |
1da177e4 LT |
1048 | } |
1049 | ||
46b4f7c1 | 1050 | dprintk("%s: start filtering\n", __func__); |
1da177e4 LT |
1051 | priv->tsfeed->start_filtering(priv->tsfeed); |
1052 | } else | |
1130ca45 | 1053 | ret = -EINVAL; |
1da177e4 | 1054 | |
1130ca45 | 1055 | error: |
3593cab5 | 1056 | mutex_unlock(&priv->mutex); |
1130ca45 | 1057 | return ret; |
1da177e4 LT |
1058 | } |
1059 | ||
1060 | static int dvb_net_feed_stop(struct net_device *dev) | |
1061 | { | |
0eade1f9 | 1062 | struct dvb_net_priv *priv = netdev_priv(dev); |
1130ca45 | 1063 | int i, ret = 0; |
1da177e4 | 1064 | |
46b4f7c1 | 1065 | dprintk("%s\n", __func__); |
3593cab5 | 1066 | mutex_lock(&priv->mutex); |
1da177e4 LT |
1067 | if (priv->feedtype == DVB_NET_FEEDTYPE_MPE) { |
1068 | if (priv->secfeed) { | |
1069 | if (priv->secfeed->is_filtering) { | |
46b4f7c1 | 1070 | dprintk("%s: stop secfeed\n", __func__); |
1da177e4 LT |
1071 | priv->secfeed->stop_filtering(priv->secfeed); |
1072 | } | |
1073 | ||
1074 | if (priv->secfilter) { | |
46b4f7c1 | 1075 | dprintk("%s: release secfilter\n", __func__); |
1da177e4 LT |
1076 | priv->secfeed->release_filter(priv->secfeed, |
1077 | priv->secfilter); | |
1078 | priv->secfilter=NULL; | |
1079 | } | |
1080 | ||
1081 | for (i=0; i<priv->multi_num; i++) { | |
1082 | if (priv->multi_secfilter[i]) { | |
1083 | dprintk("%s: release multi_filter[%d]\n", | |
46b4f7c1 | 1084 | __func__, i); |
1da177e4 LT |
1085 | priv->secfeed->release_filter(priv->secfeed, |
1086 | priv->multi_secfilter[i]); | |
1087 | priv->multi_secfilter[i] = NULL; | |
1088 | } | |
1089 | } | |
1090 | ||
1091 | priv->demux->release_section_feed(priv->demux, priv->secfeed); | |
1092 | priv->secfeed = NULL; | |
1093 | } else | |
1094 | printk("%s: no feed to stop\n", dev->name); | |
1095 | } else if (priv->feedtype == DVB_NET_FEEDTYPE_ULE) { | |
1096 | if (priv->tsfeed) { | |
1097 | if (priv->tsfeed->is_filtering) { | |
46b4f7c1 | 1098 | dprintk("%s: stop tsfeed\n", __func__); |
1da177e4 LT |
1099 | priv->tsfeed->stop_filtering(priv->tsfeed); |
1100 | } | |
1101 | priv->demux->release_ts_feed(priv->demux, priv->tsfeed); | |
1102 | priv->tsfeed = NULL; | |
1103 | } | |
1104 | else | |
1105 | printk("%s: no ts feed to stop\n", dev->name); | |
1106 | } else | |
1130ca45 | 1107 | ret = -EINVAL; |
3593cab5 | 1108 | mutex_unlock(&priv->mutex); |
1130ca45 | 1109 | return ret; |
1da177e4 LT |
1110 | } |
1111 | ||
1112 | ||
1113 | static int dvb_set_mc_filter (struct net_device *dev, struct dev_mc_list *mc) | |
1114 | { | |
0eade1f9 | 1115 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1116 | |
1117 | if (priv->multi_num == DVB_NET_MULTICAST_MAX) | |
1118 | return -ENOMEM; | |
1119 | ||
1120 | memcpy(priv->multi_macs[priv->multi_num], mc->dmi_addr, 6); | |
1121 | ||
1122 | priv->multi_num++; | |
1123 | return 0; | |
1124 | } | |
1125 | ||
1126 | ||
c4028958 | 1127 | static void wq_set_multicast_list (struct work_struct *work) |
1da177e4 | 1128 | { |
c4028958 DH |
1129 | struct dvb_net_priv *priv = |
1130 | container_of(work, struct dvb_net_priv, set_multicast_list_wq); | |
1131 | struct net_device *dev = priv->net; | |
1da177e4 LT |
1132 | |
1133 | dvb_net_feed_stop(dev); | |
1da177e4 | 1134 | priv->rx_mode = RX_MODE_UNI; |
b9e40857 | 1135 | netif_addr_lock_bh(dev); |
1da177e4 LT |
1136 | |
1137 | if (dev->flags & IFF_PROMISC) { | |
1138 | dprintk("%s: promiscuous mode\n", dev->name); | |
1139 | priv->rx_mode = RX_MODE_PROMISC; | |
1140 | } else if ((dev->flags & IFF_ALLMULTI)) { | |
1141 | dprintk("%s: allmulti mode\n", dev->name); | |
1142 | priv->rx_mode = RX_MODE_ALL_MULTI; | |
1143 | } else if (dev->mc_count) { | |
1144 | int mci; | |
1145 | struct dev_mc_list *mc; | |
1146 | ||
1147 | dprintk("%s: set_mc_list, %d entries\n", | |
1148 | dev->name, dev->mc_count); | |
1149 | ||
1150 | priv->rx_mode = RX_MODE_MULTI; | |
1151 | priv->multi_num = 0; | |
1152 | ||
1153 | for (mci = 0, mc=dev->mc_list; | |
1154 | mci < dev->mc_count; | |
1155 | mc = mc->next, mci++) { | |
1156 | dvb_set_mc_filter(dev, mc); | |
1157 | } | |
1158 | } | |
1159 | ||
b9e40857 | 1160 | netif_addr_unlock_bh(dev); |
1da177e4 LT |
1161 | dvb_net_feed_start(dev); |
1162 | } | |
1163 | ||
1164 | ||
1165 | static void dvb_net_set_multicast_list (struct net_device *dev) | |
1166 | { | |
0eade1f9 | 1167 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1168 | schedule_work(&priv->set_multicast_list_wq); |
1169 | } | |
1170 | ||
1171 | ||
c4028958 | 1172 | static void wq_restart_net_feed (struct work_struct *work) |
1da177e4 | 1173 | { |
c4028958 DH |
1174 | struct dvb_net_priv *priv = |
1175 | container_of(work, struct dvb_net_priv, restart_net_feed_wq); | |
1176 | struct net_device *dev = priv->net; | |
1da177e4 LT |
1177 | |
1178 | if (netif_running(dev)) { | |
1179 | dvb_net_feed_stop(dev); | |
1180 | dvb_net_feed_start(dev); | |
1181 | } | |
1182 | } | |
1183 | ||
1184 | ||
1185 | static int dvb_net_set_mac (struct net_device *dev, void *p) | |
1186 | { | |
0eade1f9 | 1187 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1188 | struct sockaddr *addr=p; |
1189 | ||
1190 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | |
1191 | ||
1192 | if (netif_running(dev)) | |
1193 | schedule_work(&priv->restart_net_feed_wq); | |
1194 | ||
1195 | return 0; | |
1196 | } | |
1197 | ||
1198 | ||
1199 | static int dvb_net_open(struct net_device *dev) | |
1200 | { | |
0eade1f9 | 1201 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1202 | |
1203 | priv->in_use++; | |
1204 | dvb_net_feed_start(dev); | |
1205 | return 0; | |
1206 | } | |
1207 | ||
1208 | ||
1209 | static int dvb_net_stop(struct net_device *dev) | |
1210 | { | |
0eade1f9 | 1211 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1212 | |
1213 | priv->in_use--; | |
afd1a0c9 | 1214 | return dvb_net_feed_stop(dev); |
1da177e4 LT |
1215 | } |
1216 | ||
3b04ddde SH |
1217 | static const struct header_ops dvb_header_ops = { |
1218 | .create = eth_header, | |
1219 | .parse = eth_header_parse, | |
1220 | .rebuild = eth_rebuild_header, | |
1221 | }; | |
1222 | ||
fb875333 SH |
1223 | |
1224 | static const struct net_device_ops dvb_netdev_ops = { | |
1225 | .ndo_open = dvb_net_open, | |
1226 | .ndo_stop = dvb_net_stop, | |
1227 | .ndo_start_xmit = dvb_net_tx, | |
1228 | .ndo_set_multicast_list = dvb_net_set_multicast_list, | |
1229 | .ndo_set_mac_address = dvb_net_set_mac, | |
1230 | .ndo_change_mtu = eth_change_mtu, | |
1231 | .ndo_validate_addr = eth_validate_addr, | |
1232 | }; | |
1233 | ||
1da177e4 LT |
1234 | static void dvb_net_setup(struct net_device *dev) |
1235 | { | |
1236 | ether_setup(dev); | |
1237 | ||
3b04ddde | 1238 | dev->header_ops = &dvb_header_ops; |
fb875333 | 1239 | dev->netdev_ops = &dvb_netdev_ops; |
1da177e4 LT |
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 | ||
0eade1f9 | 1290 | priv = netdev_priv(net); |
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; | |
0eade1f9 | 1323 | priv = netdev_priv(net); |
1da177e4 LT |
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 | ||
0eade1f9 | 1379 | priv_data = netdev_priv(netdev); |
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 | ||
0eade1f9 | 1430 | priv_data = netdev_priv(netdev); |
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 | ||
784e29d2 | 1462 | static const struct file_operations dvb_net_fops = { |
1da177e4 LT |
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); |