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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> |
d43c36dc | 66 | #include <linux/sched.h> |
1da177e4 LT |
67 | |
68 | #include "dvb_demux.h" | |
69 | #include "dvb_net.h" | |
70 | ||
1da177e4 LT |
71 | static inline __u32 iov_crc32( __u32 c, struct kvec *iov, unsigned int cnt ) |
72 | { | |
73 | unsigned int j; | |
74 | for (j = 0; j < cnt; j++) | |
75 | c = crc32_be( c, iov[j].iov_base, iov[j].iov_len ); | |
76 | return c; | |
77 | } | |
78 | ||
79 | ||
80 | #define DVB_NET_MULTICAST_MAX 10 | |
81 | ||
82 | #undef ULE_DEBUG | |
83 | ||
84 | #ifdef ULE_DEBUG | |
85 | ||
4bad5d2d | 86 | static void hexdump(const unsigned char *buf, unsigned short len) |
1da177e4 | 87 | { |
4bad5d2d | 88 | print_hex_dump_debug("", DUMP_PREFIX_OFFSET, 16, 1, buf, len, true); |
1da177e4 LT |
89 | } |
90 | ||
91 | #endif | |
92 | ||
93 | struct dvb_net_priv { | |
94 | int in_use; | |
1da177e4 | 95 | u16 pid; |
c4028958 | 96 | struct net_device *net; |
1da177e4 LT |
97 | struct dvb_net *host; |
98 | struct dmx_demux *demux; | |
99 | struct dmx_section_feed *secfeed; | |
100 | struct dmx_section_filter *secfilter; | |
101 | struct dmx_ts_feed *tsfeed; | |
102 | int multi_num; | |
103 | struct dmx_section_filter *multi_secfilter[DVB_NET_MULTICAST_MAX]; | |
104 | unsigned char multi_macs[DVB_NET_MULTICAST_MAX][6]; | |
105 | int rx_mode; | |
106 | #define RX_MODE_UNI 0 | |
107 | #define RX_MODE_MULTI 1 | |
108 | #define RX_MODE_ALL_MULTI 2 | |
109 | #define RX_MODE_PROMISC 3 | |
110 | struct work_struct set_multicast_list_wq; | |
111 | struct work_struct restart_net_feed_wq; | |
112 | unsigned char feedtype; /* Either FEED_TYPE_ or FEED_TYPE_ULE */ | |
113 | int need_pusi; /* Set to 1, if synchronization on PUSI required. */ | |
114 | unsigned char tscc; /* TS continuity counter after sync on PUSI. */ | |
115 | struct sk_buff *ule_skb; /* ULE SNDU decodes into this buffer. */ | |
116 | unsigned char *ule_next_hdr; /* Pointer into skb to next ULE extension header. */ | |
117 | unsigned short ule_sndu_len; /* ULE SNDU length in bytes, w/o D-Bit. */ | |
118 | unsigned short ule_sndu_type; /* ULE SNDU type field, complete. */ | |
119 | unsigned char ule_sndu_type_1; /* ULE SNDU type field, if split across 2 TS cells. */ | |
120 | unsigned char ule_dbit; /* Whether the DestMAC address present | |
121 | * or not (bit is set). */ | |
122 | unsigned char ule_bridged; /* Whether the ULE_BRIDGED extension header was found. */ | |
123 | int ule_sndu_remain; /* Nr. of bytes still required for current ULE SNDU. */ | |
124 | unsigned long ts_count; /* Current ts cell counter. */ | |
3593cab5 | 125 | struct mutex mutex; |
1da177e4 LT |
126 | }; |
127 | ||
128 | ||
129 | /** | |
130 | * Determine the packet's protocol ID. The rule here is that we | |
131 | * assume 802.3 if the type field is short enough to be a length. | |
132 | * This is normal practice and works for any 'now in use' protocol. | |
133 | * | |
134 | * stolen from eth.c out of the linux kernel, hacked for dvb-device | |
135 | * by Michael Holzt <kju@debian.org> | |
136 | */ | |
12fbcef1 | 137 | static __be16 dvb_net_eth_type_trans(struct sk_buff *skb, |
1da177e4 LT |
138 | struct net_device *dev) |
139 | { | |
140 | struct ethhdr *eth; | |
141 | unsigned char *rawp; | |
142 | ||
98e399f8 | 143 | skb_reset_mac_header(skb); |
1da177e4 | 144 | skb_pull(skb,dev->hard_header_len); |
1da177e4 | 145 | eth = eth_hdr(skb); |
1da177e4 LT |
146 | |
147 | if (*eth->h_dest & 1) { | |
5e231c2c | 148 | if(ether_addr_equal(eth->h_dest,dev->broadcast)) |
1da177e4 LT |
149 | skb->pkt_type=PACKET_BROADCAST; |
150 | else | |
151 | skb->pkt_type=PACKET_MULTICAST; | |
152 | } | |
153 | ||
e5c5d22e | 154 | if (ntohs(eth->h_proto) >= ETH_P_802_3_MIN) |
1da177e4 LT |
155 | return eth->h_proto; |
156 | ||
157 | rawp = skb->data; | |
158 | ||
159 | /** | |
160 | * This is a magic hack to spot IPX packets. Older Novell breaks | |
161 | * the protocol design and runs IPX over 802.3 without an 802.2 LLC | |
162 | * layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This | |
163 | * won't work for fault tolerant netware but does for the rest. | |
164 | */ | |
165 | if (*(unsigned short *)rawp == 0xFFFF) | |
166 | return htons(ETH_P_802_3); | |
167 | ||
168 | /** | |
169 | * Real 802.2 LLC | |
170 | */ | |
171 | return htons(ETH_P_802_2); | |
172 | } | |
173 | ||
174 | #define TS_SZ 188 | |
175 | #define TS_SYNC 0x47 | |
176 | #define TS_TEI 0x80 | |
177 | #define TS_SC 0xC0 | |
178 | #define TS_PUSI 0x40 | |
179 | #define TS_AF_A 0x20 | |
180 | #define TS_AF_D 0x10 | |
181 | ||
182 | /* ULE Extension Header handlers. */ | |
183 | ||
184 | #define ULE_TEST 0 | |
185 | #define ULE_BRIDGED 1 | |
186 | ||
18232ca6 CP |
187 | #define ULE_OPTEXTHDR_PADDING 0 |
188 | ||
1da177e4 LT |
189 | static int ule_test_sndu( struct dvb_net_priv *p ) |
190 | { | |
191 | return -1; | |
192 | } | |
193 | ||
194 | static int ule_bridged_sndu( struct dvb_net_priv *p ) | |
195 | { | |
18232ca6 | 196 | struct ethhdr *hdr = (struct ethhdr*) p->ule_next_hdr; |
e5c5d22e | 197 | if(ntohs(hdr->h_proto) < ETH_P_802_3_MIN) { |
18232ca6 | 198 | int framelen = p->ule_sndu_len - ((p->ule_next_hdr+sizeof(struct ethhdr)) - p->ule_skb->data); |
e5c5d22e | 199 | /* A frame Type < ETH_P_802_3_MIN for a bridged frame, introduces a LLC Length field. */ |
18232ca6 CP |
200 | if(framelen != ntohs(hdr->h_proto)) { |
201 | return -1; | |
202 | } | |
203 | } | |
204 | /* Note: | |
205 | * From RFC4326: | |
206 | * "A bridged SNDU is a Mandatory Extension Header of Type 1. | |
207 | * It must be the final (or only) extension header specified in the header chain of a SNDU." | |
208 | * The 'ule_bridged' flag will cause the extension header processing loop to terminate. | |
1da177e4 LT |
209 | */ |
210 | p->ule_bridged = 1; | |
211 | return 0; | |
212 | } | |
213 | ||
18232ca6 CP |
214 | static int ule_exthdr_padding(struct dvb_net_priv *p) |
215 | { | |
216 | return 0; | |
217 | } | |
1da177e4 LT |
218 | |
219 | /** Handle ULE extension headers. | |
220 | * Function is called after a successful CRC32 verification of an ULE SNDU to complete its decoding. | |
221 | * Returns: >= 0: nr. of bytes consumed by next extension header | |
222 | * -1: Mandatory extension header that is not recognized or TEST SNDU; discard. | |
223 | */ | |
224 | static int handle_one_ule_extension( struct dvb_net_priv *p ) | |
225 | { | |
226 | /* Table of mandatory extension header handlers. The header type is the index. */ | |
227 | static int (*ule_mandatory_ext_handlers[255])( struct dvb_net_priv *p ) = | |
228 | { [0] = ule_test_sndu, [1] = ule_bridged_sndu, [2] = NULL, }; | |
229 | ||
230 | /* Table of optional extension header handlers. The header type is the index. */ | |
18232ca6 CP |
231 | static int (*ule_optional_ext_handlers[255])( struct dvb_net_priv *p ) = |
232 | { [0] = ule_exthdr_padding, [1] = NULL, }; | |
1da177e4 LT |
233 | |
234 | int ext_len = 0; | |
235 | unsigned char hlen = (p->ule_sndu_type & 0x0700) >> 8; | |
236 | unsigned char htype = p->ule_sndu_type & 0x00FF; | |
237 | ||
238 | /* Discriminate mandatory and optional extension headers. */ | |
239 | if (hlen == 0) { | |
240 | /* Mandatory extension header */ | |
241 | if (ule_mandatory_ext_handlers[htype]) { | |
242 | ext_len = ule_mandatory_ext_handlers[htype]( p ); | |
18232ca6 CP |
243 | if(ext_len >= 0) { |
244 | p->ule_next_hdr += ext_len; | |
245 | if (!p->ule_bridged) { | |
12fbcef1 | 246 | p->ule_sndu_type = ntohs(*(__be16 *)p->ule_next_hdr); |
18232ca6 CP |
247 | p->ule_next_hdr += 2; |
248 | } else { | |
12fbcef1 | 249 | p->ule_sndu_type = ntohs(*(__be16 *)(p->ule_next_hdr + ((p->ule_dbit ? 2 : 3) * ETH_ALEN))); |
18232ca6 CP |
250 | /* This assures the extension handling loop will terminate. */ |
251 | } | |
1da177e4 | 252 | } |
18232ca6 | 253 | // else: extension handler failed or SNDU should be discarded |
1da177e4 LT |
254 | } else |
255 | ext_len = -1; /* SNDU has to be discarded. */ | |
256 | } else { | |
257 | /* Optional extension header. Calculate the length. */ | |
18232ca6 | 258 | ext_len = hlen << 1; |
1da177e4 LT |
259 | /* Process the optional extension header according to its type. */ |
260 | if (ule_optional_ext_handlers[htype]) | |
261 | (void)ule_optional_ext_handlers[htype]( p ); | |
262 | p->ule_next_hdr += ext_len; | |
12fbcef1 | 263 | p->ule_sndu_type = ntohs( *(__be16 *)(p->ule_next_hdr-2) ); |
18232ca6 CP |
264 | /* |
265 | * note: the length of the next header type is included in the | |
266 | * length of THIS optional extension header | |
267 | */ | |
1da177e4 LT |
268 | } |
269 | ||
270 | return ext_len; | |
271 | } | |
272 | ||
273 | static int handle_ule_extensions( struct dvb_net_priv *p ) | |
274 | { | |
275 | int total_ext_len = 0, l; | |
276 | ||
277 | p->ule_next_hdr = p->ule_skb->data; | |
278 | do { | |
279 | l = handle_one_ule_extension( p ); | |
18232ca6 CP |
280 | if (l < 0) |
281 | return l; /* Stop extension header processing and discard SNDU. */ | |
1da177e4 | 282 | total_ext_len += l; |
18232ca6 | 283 | #ifdef ULE_DEBUG |
5c7c0ca0 JP |
284 | pr_debug("ule_next_hdr=%p, ule_sndu_type=%i, l=%i, total_ext_len=%i\n", |
285 | p->ule_next_hdr, (int)p->ule_sndu_type, | |
286 | l, total_ext_len); | |
18232ca6 | 287 | #endif |
1da177e4 | 288 | |
e5c5d22e | 289 | } while (p->ule_sndu_type < ETH_P_802_3_MIN); |
1da177e4 LT |
290 | |
291 | return total_ext_len; | |
292 | } | |
293 | ||
294 | ||
295 | /** Prepare for a new ULE SNDU: reset the decoder state. */ | |
296 | static inline void reset_ule( struct dvb_net_priv *p ) | |
297 | { | |
298 | p->ule_skb = NULL; | |
299 | p->ule_next_hdr = NULL; | |
300 | p->ule_sndu_len = 0; | |
301 | p->ule_sndu_type = 0; | |
302 | p->ule_sndu_type_1 = 0; | |
303 | p->ule_sndu_remain = 0; | |
304 | p->ule_dbit = 0xFF; | |
305 | p->ule_bridged = 0; | |
306 | } | |
307 | ||
308 | /** | |
309 | * Decode ULE SNDUs according to draft-ietf-ipdvb-ule-03.txt from a sequence of | |
310 | * TS cells of a single PID. | |
311 | */ | |
312 | static void dvb_net_ule( struct net_device *dev, const u8 *buf, size_t buf_len ) | |
313 | { | |
0eade1f9 | 314 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 | 315 | unsigned long skipped = 0L; |
372280d2 TP |
316 | const u8 *ts, *ts_end, *from_where = NULL; |
317 | u8 ts_remain = 0, how_much = 0, new_ts = 1; | |
1da177e4 | 318 | struct ethhdr *ethh = NULL; |
5c331fc8 | 319 | bool error = false; |
1da177e4 LT |
320 | |
321 | #ifdef ULE_DEBUG | |
322 | /* The code inside ULE_DEBUG keeps a history of the last 100 TS cells processed. */ | |
323 | static unsigned char ule_hist[100*TS_SZ]; | |
ff699e6b | 324 | static unsigned char *ule_where = ule_hist, ule_dump; |
1da177e4 LT |
325 | #endif |
326 | ||
1da177e4 LT |
327 | /* For all TS cells in current buffer. |
328 | * Appearently, we are called for every single TS cell. | |
329 | */ | |
372280d2 | 330 | for (ts = buf, ts_end = buf + buf_len; ts < ts_end; /* no default incr. */ ) { |
1da177e4 LT |
331 | |
332 | if (new_ts) { | |
333 | /* We are about to process a new TS cell. */ | |
334 | ||
335 | #ifdef ULE_DEBUG | |
336 | if (ule_where >= &ule_hist[100*TS_SZ]) ule_where = ule_hist; | |
337 | memcpy( ule_where, ts, TS_SZ ); | |
338 | if (ule_dump) { | |
339 | hexdump( ule_where, TS_SZ ); | |
340 | ule_dump = 0; | |
341 | } | |
342 | ule_where += TS_SZ; | |
343 | #endif | |
344 | ||
345 | /* Check TS error conditions: sync_byte, transport_error_indicator, scrambling_control . */ | |
346 | if ((ts[0] != TS_SYNC) || (ts[1] & TS_TEI) || ((ts[3] & TS_SC) != 0)) { | |
347 | printk(KERN_WARNING "%lu: Invalid TS cell: SYNC %#x, TEI %u, SC %#x.\n", | |
f491dbe0 JP |
348 | priv->ts_count, ts[0], |
349 | (ts[1] & TS_TEI) >> 7, | |
37314528 | 350 | (ts[3] & TS_SC) >> 6); |
1da177e4 LT |
351 | |
352 | /* Drop partly decoded SNDU, reset state, resync on PUSI. */ | |
353 | if (priv->ule_skb) { | |
354 | dev_kfree_skb( priv->ule_skb ); | |
355 | /* Prepare for next SNDU. */ | |
fb875333 SH |
356 | dev->stats.rx_errors++; |
357 | dev->stats.rx_frame_errors++; | |
1da177e4 LT |
358 | } |
359 | reset_ule(priv); | |
360 | priv->need_pusi = 1; | |
361 | ||
362 | /* Continue with next TS cell. */ | |
363 | ts += TS_SZ; | |
364 | priv->ts_count++; | |
365 | continue; | |
366 | } | |
367 | ||
368 | ts_remain = 184; | |
369 | from_where = ts + 4; | |
370 | } | |
371 | /* Synchronize on PUSI, if required. */ | |
372 | if (priv->need_pusi) { | |
373 | if (ts[1] & TS_PUSI) { | |
374 | /* Find beginning of first ULE SNDU in current TS cell. */ | |
375 | /* Synchronize continuity counter. */ | |
376 | priv->tscc = ts[3] & 0x0F; | |
377 | /* There is a pointer field here. */ | |
378 | if (ts[4] > ts_remain) { | |
379 | printk(KERN_ERR "%lu: Invalid ULE packet " | |
380 | "(pointer field %d)\n", priv->ts_count, ts[4]); | |
381 | ts += TS_SZ; | |
382 | priv->ts_count++; | |
383 | continue; | |
384 | } | |
385 | /* Skip to destination of pointer field. */ | |
386 | from_where = &ts[5] + ts[4]; | |
387 | ts_remain -= 1 + ts[4]; | |
388 | skipped = 0; | |
389 | } else { | |
390 | skipped++; | |
391 | ts += TS_SZ; | |
392 | priv->ts_count++; | |
393 | continue; | |
394 | } | |
395 | } | |
396 | ||
1da177e4 | 397 | if (new_ts) { |
18232ca6 | 398 | /* Check continuity counter. */ |
1da177e4 LT |
399 | if ((ts[3] & 0x0F) == priv->tscc) |
400 | priv->tscc = (priv->tscc + 1) & 0x0F; | |
401 | else { | |
402 | /* TS discontinuity handling: */ | |
403 | printk(KERN_WARNING "%lu: TS discontinuity: got %#x, " | |
18232ca6 | 404 | "expected %#x.\n", priv->ts_count, ts[3] & 0x0F, priv->tscc); |
1da177e4 LT |
405 | /* Drop partly decoded SNDU, reset state, resync on PUSI. */ |
406 | if (priv->ule_skb) { | |
407 | dev_kfree_skb( priv->ule_skb ); | |
408 | /* Prepare for next SNDU. */ | |
409 | // reset_ule(priv); moved to below. | |
fb875333 SH |
410 | dev->stats.rx_errors++; |
411 | dev->stats.rx_frame_errors++; | |
1da177e4 LT |
412 | } |
413 | reset_ule(priv); | |
414 | /* skip to next PUSI. */ | |
415 | priv->need_pusi = 1; | |
1da177e4 LT |
416 | continue; |
417 | } | |
418 | /* If we still have an incomplete payload, but PUSI is | |
419 | * set; some TS cells are missing. | |
420 | * This is only possible here, if we missed exactly 16 TS | |
421 | * cells (continuity counter wrap). */ | |
422 | if (ts[1] & TS_PUSI) { | |
423 | if (! priv->need_pusi) { | |
18232ca6 | 424 | if (!(*from_where < (ts_remain-1)) || *from_where != priv->ule_sndu_remain) { |
1da177e4 LT |
425 | /* Pointer field is invalid. Drop this TS cell and any started ULE SNDU. */ |
426 | printk(KERN_WARNING "%lu: Invalid pointer " | |
427 | "field: %u.\n", priv->ts_count, *from_where); | |
428 | ||
429 | /* Drop partly decoded SNDU, reset state, resync on PUSI. */ | |
430 | if (priv->ule_skb) { | |
5c331fc8 AWC |
431 | error = true; |
432 | dev_kfree_skb(priv->ule_skb); | |
433 | } | |
434 | ||
435 | if (error || priv->ule_sndu_remain) { | |
fb875333 SH |
436 | dev->stats.rx_errors++; |
437 | dev->stats.rx_frame_errors++; | |
5c331fc8 | 438 | error = false; |
1da177e4 | 439 | } |
5c331fc8 | 440 | |
1da177e4 LT |
441 | reset_ule(priv); |
442 | priv->need_pusi = 1; | |
1da177e4 LT |
443 | continue; |
444 | } | |
445 | /* Skip pointer field (we're processing a | |
446 | * packed payload). */ | |
447 | from_where += 1; | |
448 | ts_remain -= 1; | |
449 | } else | |
450 | priv->need_pusi = 0; | |
451 | ||
452 | if (priv->ule_sndu_remain > 183) { | |
453 | /* Current SNDU lacks more data than there could be available in the | |
454 | * current TS cell. */ | |
fb875333 SH |
455 | dev->stats.rx_errors++; |
456 | dev->stats.rx_length_errors++; | |
1da177e4 LT |
457 | printk(KERN_WARNING "%lu: Expected %d more SNDU bytes, but " |
458 | "got PUSI (pf %d, ts_remain %d). Flushing incomplete payload.\n", | |
459 | priv->ts_count, priv->ule_sndu_remain, ts[4], ts_remain); | |
460 | dev_kfree_skb(priv->ule_skb); | |
461 | /* Prepare for next SNDU. */ | |
462 | reset_ule(priv); | |
463 | /* Resync: go to where pointer field points to: start of next ULE SNDU. */ | |
464 | from_where += ts[4]; | |
465 | ts_remain -= ts[4]; | |
466 | } | |
467 | } | |
468 | } | |
469 | ||
470 | /* Check if new payload needs to be started. */ | |
471 | if (priv->ule_skb == NULL) { | |
472 | /* Start a new payload with skb. | |
473 | * Find ULE header. It is only guaranteed that the | |
474 | * length field (2 bytes) is contained in the current | |
475 | * TS. | |
476 | * Check ts_remain has to be >= 2 here. */ | |
477 | if (ts_remain < 2) { | |
478 | printk(KERN_WARNING "Invalid payload packing: only %d " | |
479 | "bytes left in TS. Resyncing.\n", ts_remain); | |
480 | priv->ule_sndu_len = 0; | |
481 | priv->need_pusi = 1; | |
29e1fa35 | 482 | ts += TS_SZ; |
1da177e4 LT |
483 | continue; |
484 | } | |
485 | ||
486 | if (! priv->ule_sndu_len) { | |
487 | /* Got at least two bytes, thus extrace the SNDU length. */ | |
488 | priv->ule_sndu_len = from_where[0] << 8 | from_where[1]; | |
489 | if (priv->ule_sndu_len & 0x8000) { | |
490 | /* D-Bit is set: no dest mac present. */ | |
491 | priv->ule_sndu_len &= 0x7FFF; | |
492 | priv->ule_dbit = 1; | |
493 | } else | |
494 | priv->ule_dbit = 0; | |
495 | ||
18232ca6 | 496 | if (priv->ule_sndu_len < 5) { |
1da177e4 LT |
497 | printk(KERN_WARNING "%lu: Invalid ULE SNDU length %u. " |
498 | "Resyncing.\n", priv->ts_count, priv->ule_sndu_len); | |
fb875333 SH |
499 | dev->stats.rx_errors++; |
500 | dev->stats.rx_length_errors++; | |
1da177e4 LT |
501 | priv->ule_sndu_len = 0; |
502 | priv->need_pusi = 1; | |
503 | new_ts = 1; | |
504 | ts += TS_SZ; | |
505 | priv->ts_count++; | |
506 | continue; | |
507 | } | |
508 | ts_remain -= 2; /* consume the 2 bytes SNDU length. */ | |
509 | from_where += 2; | |
510 | } | |
511 | ||
5c331fc8 | 512 | priv->ule_sndu_remain = priv->ule_sndu_len + 2; |
1da177e4 LT |
513 | /* |
514 | * State of current TS: | |
515 | * ts_remain (remaining bytes in the current TS cell) | |
516 | * 0 ule_type is not available now, we need the next TS cell | |
517 | * 1 the first byte of the ule_type is present | |
518 | * >=2 full ULE header present, maybe some payload data as well. | |
519 | */ | |
520 | switch (ts_remain) { | |
521 | case 1: | |
5c331fc8 | 522 | priv->ule_sndu_remain--; |
1da177e4 LT |
523 | priv->ule_sndu_type = from_where[0] << 8; |
524 | priv->ule_sndu_type_1 = 1; /* first byte of ule_type is set. */ | |
525 | ts_remain -= 1; from_where += 1; | |
526 | /* Continue w/ next TS. */ | |
527 | case 0: | |
528 | new_ts = 1; | |
529 | ts += TS_SZ; | |
530 | priv->ts_count++; | |
531 | continue; | |
532 | ||
533 | default: /* complete ULE header is present in current TS. */ | |
534 | /* Extract ULE type field. */ | |
535 | if (priv->ule_sndu_type_1) { | |
5c331fc8 | 536 | priv->ule_sndu_type_1 = 0; |
1da177e4 LT |
537 | priv->ule_sndu_type |= from_where[0]; |
538 | from_where += 1; /* points to payload start. */ | |
539 | ts_remain -= 1; | |
540 | } else { | |
541 | /* Complete type is present in new TS. */ | |
542 | priv->ule_sndu_type = from_where[0] << 8 | from_where[1]; | |
543 | from_where += 2; /* points to payload start. */ | |
544 | ts_remain -= 2; | |
545 | } | |
546 | break; | |
547 | } | |
548 | ||
549 | /* Allocate the skb (decoder target buffer) with the correct size, as follows: | |
550 | * prepare for the largest case: bridged SNDU with MAC address (dbit = 0). */ | |
551 | priv->ule_skb = dev_alloc_skb( priv->ule_sndu_len + ETH_HLEN + ETH_ALEN ); | |
552 | if (priv->ule_skb == NULL) { | |
553 | printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", | |
554 | dev->name); | |
fb875333 | 555 | dev->stats.rx_dropped++; |
1da177e4 LT |
556 | return; |
557 | } | |
558 | ||
559 | /* This includes the CRC32 _and_ dest mac, if !dbit. */ | |
560 | priv->ule_sndu_remain = priv->ule_sndu_len; | |
561 | priv->ule_skb->dev = dev; | |
562 | /* Leave space for Ethernet or bridged SNDU header (eth hdr plus one MAC addr). */ | |
563 | skb_reserve( priv->ule_skb, ETH_HLEN + ETH_ALEN ); | |
564 | } | |
565 | ||
566 | /* Copy data into our current skb. */ | |
567 | how_much = min(priv->ule_sndu_remain, (int)ts_remain); | |
568 | memcpy(skb_put(priv->ule_skb, how_much), from_where, how_much); | |
569 | priv->ule_sndu_remain -= how_much; | |
570 | ts_remain -= how_much; | |
571 | from_where += how_much; | |
572 | ||
573 | /* Check for complete payload. */ | |
574 | if (priv->ule_sndu_remain <= 0) { | |
575 | /* Check CRC32, we've got it in our skb already. */ | |
12fbcef1 AV |
576 | __be16 ulen = htons(priv->ule_sndu_len); |
577 | __be16 utype = htons(priv->ule_sndu_type); | |
27a884dc | 578 | const u8 *tail; |
1da177e4 LT |
579 | struct kvec iov[3] = { |
580 | { &ulen, sizeof ulen }, | |
581 | { &utype, sizeof utype }, | |
582 | { priv->ule_skb->data, priv->ule_skb->len - 4 } | |
583 | }; | |
dedcefb0 | 584 | u32 ule_crc = ~0L, expected_crc; |
1da177e4 LT |
585 | if (priv->ule_dbit) { |
586 | /* Set D-bit for CRC32 verification, | |
587 | * if it was set originally. */ | |
f51b10ef | 588 | ulen |= htons(0x8000); |
1da177e4 LT |
589 | } |
590 | ||
591 | ule_crc = iov_crc32(ule_crc, iov, 3); | |
27a884dc ACM |
592 | tail = skb_tail_pointer(priv->ule_skb); |
593 | expected_crc = *(tail - 4) << 24 | | |
594 | *(tail - 3) << 16 | | |
595 | *(tail - 2) << 8 | | |
596 | *(tail - 1); | |
1da177e4 | 597 | if (ule_crc != expected_crc) { |
5ef35be4 | 598 | printk(KERN_WARNING "%lu: CRC32 check FAILED: %08x / %08x, SNDU len %d type %#x, ts_remain %d, next 2: %x.\n", |
1da177e4 LT |
599 | 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); |
600 | ||
601 | #ifdef ULE_DEBUG | |
602 | hexdump( iov[0].iov_base, iov[0].iov_len ); | |
603 | hexdump( iov[1].iov_base, iov[1].iov_len ); | |
604 | hexdump( iov[2].iov_base, iov[2].iov_len ); | |
605 | ||
606 | if (ule_where == ule_hist) { | |
607 | hexdump( &ule_hist[98*TS_SZ], TS_SZ ); | |
608 | hexdump( &ule_hist[99*TS_SZ], TS_SZ ); | |
609 | } else if (ule_where == &ule_hist[TS_SZ]) { | |
610 | hexdump( &ule_hist[99*TS_SZ], TS_SZ ); | |
611 | hexdump( ule_hist, TS_SZ ); | |
612 | } else { | |
613 | hexdump( ule_where - TS_SZ - TS_SZ, TS_SZ ); | |
614 | hexdump( ule_where - TS_SZ, TS_SZ ); | |
615 | } | |
616 | ule_dump = 1; | |
617 | #endif | |
618 | ||
fb875333 SH |
619 | dev->stats.rx_errors++; |
620 | dev->stats.rx_crc_errors++; | |
1da177e4 LT |
621 | dev_kfree_skb(priv->ule_skb); |
622 | } else { | |
623 | /* CRC32 verified OK. */ | |
18232ca6 CP |
624 | u8 dest_addr[ETH_ALEN]; |
625 | static const u8 bc_addr[ETH_ALEN] = | |
626 | { [ 0 ... ETH_ALEN-1] = 0xff }; | |
627 | ||
628 | /* CRC32 was OK. Remove it from skb. */ | |
629 | priv->ule_skb->tail -= 4; | |
630 | priv->ule_skb->len -= 4; | |
631 | ||
632 | if (!priv->ule_dbit) { | |
633 | /* | |
634 | * The destination MAC address is the | |
635 | * next data in the skb. It comes | |
636 | * before any extension headers. | |
637 | * | |
638 | * Check if the payload of this SNDU | |
639 | * should be passed up the stack. | |
640 | */ | |
641 | register int drop = 0; | |
642 | if (priv->rx_mode != RX_MODE_PROMISC) { | |
643 | if (priv->ule_skb->data[0] & 0x01) { | |
644 | /* multicast or broadcast */ | |
5e231c2c | 645 | if (!ether_addr_equal(priv->ule_skb->data, bc_addr)) { |
18232ca6 CP |
646 | /* multicast */ |
647 | if (priv->rx_mode == RX_MODE_MULTI) { | |
648 | int i; | |
5e231c2c | 649 | for(i = 0; i < priv->multi_num && |
650 | !ether_addr_equal(priv->ule_skb->data, | |
651 | priv->multi_macs[i]); i++) | |
18232ca6 CP |
652 | ; |
653 | if (i == priv->multi_num) | |
654 | drop = 1; | |
655 | } else if (priv->rx_mode != RX_MODE_ALL_MULTI) | |
656 | drop = 1; /* no broadcast; */ | |
657 | /* else: all multicast mode: accept all multicast packets */ | |
658 | } | |
659 | /* else: broadcast */ | |
660 | } | |
5e231c2c | 661 | else if (!ether_addr_equal(priv->ule_skb->data, dev->dev_addr)) |
18232ca6 CP |
662 | drop = 1; |
663 | /* else: destination address matches the MAC address of our receiver device */ | |
664 | } | |
c84e6036 | 665 | /* else: promiscuous mode; pass everything up the stack */ |
18232ca6 CP |
666 | |
667 | if (drop) { | |
668 | #ifdef ULE_DEBUG | |
5c7c0ca0 JP |
669 | netdev_dbg(dev, "Dropping SNDU: MAC destination address does not match: dest addr: %pM, dev addr: %pM\n", |
670 | priv->ule_skb->data, dev->dev_addr); | |
18232ca6 CP |
671 | #endif |
672 | dev_kfree_skb(priv->ule_skb); | |
673 | goto sndu_done; | |
674 | } | |
675 | else | |
676 | { | |
d626f62b ACM |
677 | skb_copy_from_linear_data(priv->ule_skb, |
678 | dest_addr, | |
679 | ETH_ALEN); | |
18232ca6 CP |
680 | skb_pull(priv->ule_skb, ETH_ALEN); |
681 | } | |
682 | } | |
683 | ||
1da177e4 | 684 | /* Handle ULE Extension Headers. */ |
e5c5d22e | 685 | if (priv->ule_sndu_type < ETH_P_802_3_MIN) { |
1da177e4 | 686 | /* There is an extension header. Handle it accordingly. */ |
18232ca6 | 687 | int l = handle_ule_extensions(priv); |
1da177e4 LT |
688 | if (l < 0) { |
689 | /* Mandatory extension header unknown or TEST SNDU. Drop it. */ | |
690 | // printk( KERN_WARNING "Dropping SNDU, extension headers.\n" ); | |
18232ca6 | 691 | dev_kfree_skb(priv->ule_skb); |
1da177e4 LT |
692 | goto sndu_done; |
693 | } | |
18232ca6 | 694 | skb_pull(priv->ule_skb, l); |
1da177e4 LT |
695 | } |
696 | ||
18232ca6 CP |
697 | /* |
698 | * Construct/assure correct ethernet header. | |
699 | * Note: in bridged mode (priv->ule_bridged != | |
700 | * 0) we already have the (original) ethernet | |
701 | * header at the start of the payload (after | |
702 | * optional dest. address and any extension | |
703 | * headers). | |
704 | */ | |
705 | ||
706 | if (!priv->ule_bridged) { | |
707 | skb_push(priv->ule_skb, ETH_HLEN); | |
708 | ethh = (struct ethhdr *)priv->ule_skb->data; | |
709 | if (!priv->ule_dbit) { | |
710 | /* dest_addr buffer is only valid if priv->ule_dbit == 0 */ | |
711 | memcpy(ethh->h_dest, dest_addr, ETH_ALEN); | |
4dc102b2 | 712 | eth_zero_addr(ethh->h_source); |
1da177e4 | 713 | } |
18232ca6 CP |
714 | else /* zeroize source and dest */ |
715 | memset( ethh, 0, ETH_ALEN*2 ); | |
716 | ||
717 | ethh->h_proto = htons(priv->ule_sndu_type); | |
1da177e4 | 718 | } |
18232ca6 | 719 | /* else: skb is in correct state; nothing to do. */ |
1da177e4 LT |
720 | priv->ule_bridged = 0; |
721 | ||
722 | /* Stuff into kernel's protocol stack. */ | |
723 | priv->ule_skb->protocol = dvb_net_eth_type_trans(priv->ule_skb, dev); | |
724 | /* If D-bit is set (i.e. destination MAC address not present), | |
725 | * receive the packet anyhow. */ | |
726 | /* if (priv->ule_dbit && skb->pkt_type == PACKET_OTHERHOST) | |
727 | priv->ule_skb->pkt_type = PACKET_HOST; */ | |
fb875333 SH |
728 | dev->stats.rx_packets++; |
729 | dev->stats.rx_bytes += priv->ule_skb->len; | |
1da177e4 LT |
730 | netif_rx(priv->ule_skb); |
731 | } | |
732 | sndu_done: | |
733 | /* Prepare for next SNDU. */ | |
734 | reset_ule(priv); | |
735 | } | |
736 | ||
737 | /* More data in current TS (look at the bytes following the CRC32)? */ | |
738 | if (ts_remain >= 2 && *((unsigned short *)from_where) != 0xFFFF) { | |
739 | /* Next ULE SNDU starts right there. */ | |
740 | new_ts = 0; | |
741 | priv->ule_skb = NULL; | |
742 | priv->ule_sndu_type_1 = 0; | |
743 | priv->ule_sndu_len = 0; | |
744 | // printk(KERN_WARNING "More data in current TS: [%#x %#x %#x %#x]\n", | |
745 | // *(from_where + 0), *(from_where + 1), | |
746 | // *(from_where + 2), *(from_where + 3)); | |
747 | // printk(KERN_WARNING "ts @ %p, stopped @ %p:\n", ts, from_where + 0); | |
748 | // hexdump(ts, 188); | |
749 | } else { | |
750 | new_ts = 1; | |
751 | ts += TS_SZ; | |
752 | priv->ts_count++; | |
753 | if (priv->ule_skb == NULL) { | |
754 | priv->need_pusi = 1; | |
755 | priv->ule_sndu_type_1 = 0; | |
756 | priv->ule_sndu_len = 0; | |
757 | } | |
758 | } | |
759 | } /* for all available TS cells */ | |
760 | } | |
761 | ||
762 | static int dvb_net_ts_callback(const u8 *buffer1, size_t buffer1_len, | |
763 | const u8 *buffer2, size_t buffer2_len, | |
2f684b23 | 764 | struct dmx_ts_feed *feed) |
1da177e4 | 765 | { |
0c53c70f | 766 | struct net_device *dev = feed->priv; |
1da177e4 | 767 | |
5fa1247a AV |
768 | if (buffer2) |
769 | printk(KERN_WARNING "buffer2 not NULL: %p.\n", buffer2); | |
1da177e4 LT |
770 | if (buffer1_len > 32768) |
771 | printk(KERN_WARNING "length > 32k: %zu.\n", buffer1_len); | |
772 | /* printk("TS callback: %u bytes, %u TS cells @ %p.\n", | |
afd1a0c9 | 773 | buffer1_len, buffer1_len / TS_SZ, buffer1); */ |
1da177e4 LT |
774 | dvb_net_ule(dev, buffer1, buffer1_len); |
775 | return 0; | |
776 | } | |
777 | ||
778 | ||
71be258b MK |
779 | static void dvb_net_sec(struct net_device *dev, |
780 | const u8 *pkt, int pkt_len) | |
1da177e4 | 781 | { |
afd1a0c9 MCC |
782 | u8 *eth; |
783 | struct sk_buff *skb; | |
fb875333 | 784 | struct net_device_stats *stats = &dev->stats; |
59142330 | 785 | int snap = 0; |
1da177e4 LT |
786 | |
787 | /* note: pkt_len includes a 32bit checksum */ | |
788 | if (pkt_len < 16) { | |
789 | printk("%s: IP/MPE packet length = %d too small.\n", | |
790 | dev->name, pkt_len); | |
791 | stats->rx_errors++; | |
792 | stats->rx_length_errors++; | |
793 | return; | |
794 | } | |
795 | /* it seems some ISPs manage to screw up here, so we have to | |
796 | * relax the error checks... */ | |
797 | #if 0 | |
798 | if ((pkt[5] & 0xfd) != 0xc1) { | |
799 | /* drop scrambled or broken packets */ | |
800 | #else | |
801 | if ((pkt[5] & 0x3c) != 0x00) { | |
802 | /* drop scrambled */ | |
803 | #endif | |
804 | stats->rx_errors++; | |
805 | stats->rx_crc_errors++; | |
806 | return; | |
807 | } | |
808 | if (pkt[5] & 0x02) { | |
59142330 JS |
809 | /* handle LLC/SNAP, see rfc-1042 */ |
810 | if (pkt_len < 24 || memcmp(&pkt[12], "\xaa\xaa\x03\0\0\0", 6)) { | |
811 | stats->rx_dropped++; | |
812 | return; | |
813 | } | |
814 | snap = 8; | |
afd1a0c9 | 815 | } |
1da177e4 LT |
816 | if (pkt[7]) { |
817 | /* FIXME: assemble datagram from multiple sections */ | |
818 | stats->rx_errors++; | |
819 | stats->rx_frame_errors++; | |
820 | return; | |
821 | } | |
822 | ||
823 | /* we have 14 byte ethernet header (ip header follows); | |
59142330 | 824 | * 12 byte MPE header; 4 byte checksum; + 2 byte alignment, 8 byte LLC/SNAP |
1da177e4 | 825 | */ |
59142330 | 826 | if (!(skb = dev_alloc_skb(pkt_len - 4 - 12 + 14 + 2 - snap))) { |
1da177e4 LT |
827 | //printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name); |
828 | stats->rx_dropped++; | |
829 | return; | |
830 | } | |
831 | skb_reserve(skb, 2); /* longword align L3 header */ | |
832 | skb->dev = dev; | |
833 | ||
834 | /* copy L3 payload */ | |
59142330 JS |
835 | eth = (u8 *) skb_put(skb, pkt_len - 12 - 4 + 14 - snap); |
836 | memcpy(eth + 14, pkt + 12 + snap, pkt_len - 12 - 4 - snap); | |
1da177e4 LT |
837 | |
838 | /* create ethernet header: */ | |
afd1a0c9 MCC |
839 | eth[0]=pkt[0x0b]; |
840 | eth[1]=pkt[0x0a]; | |
841 | eth[2]=pkt[0x09]; | |
842 | eth[3]=pkt[0x08]; | |
843 | eth[4]=pkt[0x04]; | |
844 | eth[5]=pkt[0x03]; | |
1da177e4 | 845 | |
afd1a0c9 | 846 | eth[6]=eth[7]=eth[8]=eth[9]=eth[10]=eth[11]=0; |
1da177e4 | 847 | |
59142330 JS |
848 | if (snap) { |
849 | eth[12] = pkt[18]; | |
850 | eth[13] = pkt[19]; | |
851 | } else { | |
852 | /* protocol numbers are from rfc-1700 or | |
853 | * http://www.iana.org/assignments/ethernet-numbers | |
854 | */ | |
855 | if (pkt[12] >> 4 == 6) { /* version field from IP header */ | |
856 | eth[12] = 0x86; /* IPv6 */ | |
857 | eth[13] = 0xdd; | |
858 | } else { | |
859 | eth[12] = 0x08; /* IPv4 */ | |
860 | eth[13] = 0x00; | |
861 | } | |
862 | } | |
1da177e4 LT |
863 | |
864 | skb->protocol = dvb_net_eth_type_trans(skb, dev); | |
865 | ||
866 | stats->rx_packets++; | |
867 | stats->rx_bytes+=skb->len; | |
afd1a0c9 | 868 | netif_rx(skb); |
1da177e4 LT |
869 | } |
870 | ||
871 | static int dvb_net_sec_callback(const u8 *buffer1, size_t buffer1_len, | |
872 | const u8 *buffer2, size_t buffer2_len, | |
2f684b23 | 873 | struct dmx_section_filter *filter) |
1da177e4 | 874 | { |
afd1a0c9 | 875 | struct net_device *dev = filter->priv; |
1da177e4 LT |
876 | |
877 | /** | |
878 | * we rely on the DVB API definition where exactly one complete | |
879 | * section is delivered in buffer1 | |
880 | */ | |
04b35abe | 881 | dvb_net_sec (dev, buffer1, buffer1_len); |
1da177e4 LT |
882 | return 0; |
883 | } | |
884 | ||
885 | static int dvb_net_tx(struct sk_buff *skb, struct net_device *dev) | |
886 | { | |
887 | dev_kfree_skb(skb); | |
6ed10654 | 888 | return NETDEV_TX_OK; |
1da177e4 LT |
889 | } |
890 | ||
891 | static u8 mask_normal[6]={0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; | |
892 | static u8 mask_allmulti[6]={0xff, 0xff, 0xff, 0x00, 0x00, 0x00}; | |
893 | static u8 mac_allmulti[6]={0x01, 0x00, 0x5e, 0x00, 0x00, 0x00}; | |
894 | static u8 mask_promisc[6]={0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; | |
895 | ||
896 | static int dvb_net_filter_sec_set(struct net_device *dev, | |
897 | struct dmx_section_filter **secfilter, | |
898 | u8 *mac, u8 *mac_mask) | |
899 | { | |
0eade1f9 | 900 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
901 | int ret; |
902 | ||
903 | *secfilter=NULL; | |
904 | ret = priv->secfeed->allocate_filter(priv->secfeed, secfilter); | |
905 | if (ret<0) { | |
906 | printk("%s: could not get filter\n", dev->name); | |
907 | return ret; | |
908 | } | |
909 | ||
910 | (*secfilter)->priv=(void *) dev; | |
911 | ||
912 | memset((*secfilter)->filter_value, 0x00, DMX_MAX_FILTER_SIZE); | |
913 | memset((*secfilter)->filter_mask, 0x00, DMX_MAX_FILTER_SIZE); | |
914 | memset((*secfilter)->filter_mode, 0xff, DMX_MAX_FILTER_SIZE); | |
915 | ||
916 | (*secfilter)->filter_value[0]=0x3e; | |
917 | (*secfilter)->filter_value[3]=mac[5]; | |
918 | (*secfilter)->filter_value[4]=mac[4]; | |
919 | (*secfilter)->filter_value[8]=mac[3]; | |
920 | (*secfilter)->filter_value[9]=mac[2]; | |
921 | (*secfilter)->filter_value[10]=mac[1]; | |
922 | (*secfilter)->filter_value[11]=mac[0]; | |
923 | ||
924 | (*secfilter)->filter_mask[0] = 0xff; | |
925 | (*secfilter)->filter_mask[3] = mac_mask[5]; | |
926 | (*secfilter)->filter_mask[4] = mac_mask[4]; | |
927 | (*secfilter)->filter_mask[8] = mac_mask[3]; | |
928 | (*secfilter)->filter_mask[9] = mac_mask[2]; | |
929 | (*secfilter)->filter_mask[10] = mac_mask[1]; | |
930 | (*secfilter)->filter_mask[11]=mac_mask[0]; | |
931 | ||
5c7c0ca0 | 932 | netdev_dbg(dev, "filter mac=%pM mask=%pM\n", mac, mac_mask); |
1da177e4 LT |
933 | |
934 | return 0; | |
935 | } | |
936 | ||
937 | static int dvb_net_feed_start(struct net_device *dev) | |
938 | { | |
1130ca45 | 939 | int ret = 0, i; |
0eade1f9 | 940 | struct dvb_net_priv *priv = netdev_priv(dev); |
afd1a0c9 MCC |
941 | struct dmx_demux *demux = priv->demux; |
942 | unsigned char *mac = (unsigned char *) dev->dev_addr; | |
1da177e4 | 943 | |
5c7c0ca0 | 944 | netdev_dbg(dev, "rx_mode %i\n", priv->rx_mode); |
3593cab5 | 945 | mutex_lock(&priv->mutex); |
1da177e4 | 946 | if (priv->tsfeed || priv->secfeed || priv->secfilter || priv->multi_secfilter[0]) |
46b4f7c1 | 947 | printk("%s: BUG %d\n", __func__, __LINE__); |
1da177e4 LT |
948 | |
949 | priv->secfeed=NULL; | |
950 | priv->secfilter=NULL; | |
951 | priv->tsfeed = NULL; | |
952 | ||
953 | if (priv->feedtype == DVB_NET_FEEDTYPE_MPE) { | |
5c7c0ca0 | 954 | netdev_dbg(dev, "alloc secfeed\n"); |
1da177e4 LT |
955 | ret=demux->allocate_section_feed(demux, &priv->secfeed, |
956 | dvb_net_sec_callback); | |
957 | if (ret<0) { | |
958 | printk("%s: could not allocate section feed\n", dev->name); | |
1130ca45 | 959 | goto error; |
1da177e4 LT |
960 | } |
961 | ||
5d2cd163 | 962 | ret = priv->secfeed->set(priv->secfeed, priv->pid, 32768, 1); |
1da177e4 LT |
963 | |
964 | if (ret<0) { | |
965 | printk("%s: could not set section feed\n", dev->name); | |
966 | priv->demux->release_section_feed(priv->demux, priv->secfeed); | |
967 | priv->secfeed=NULL; | |
1130ca45 | 968 | goto error; |
1da177e4 LT |
969 | } |
970 | ||
971 | if (priv->rx_mode != RX_MODE_PROMISC) { | |
5c7c0ca0 | 972 | netdev_dbg(dev, "set secfilter\n"); |
1da177e4 LT |
973 | dvb_net_filter_sec_set(dev, &priv->secfilter, mac, mask_normal); |
974 | } | |
975 | ||
976 | switch (priv->rx_mode) { | |
977 | case RX_MODE_MULTI: | |
978 | for (i = 0; i < priv->multi_num; i++) { | |
5c7c0ca0 | 979 | netdev_dbg(dev, "set multi_secfilter[%d]\n", i); |
1da177e4 LT |
980 | dvb_net_filter_sec_set(dev, &priv->multi_secfilter[i], |
981 | priv->multi_macs[i], mask_normal); | |
982 | } | |
983 | break; | |
984 | case RX_MODE_ALL_MULTI: | |
985 | priv->multi_num=1; | |
5c7c0ca0 | 986 | netdev_dbg(dev, "set multi_secfilter[0]\n"); |
1da177e4 LT |
987 | dvb_net_filter_sec_set(dev, &priv->multi_secfilter[0], |
988 | mac_allmulti, mask_allmulti); | |
989 | break; | |
990 | case RX_MODE_PROMISC: | |
991 | priv->multi_num=0; | |
5c7c0ca0 | 992 | netdev_dbg(dev, "set secfilter\n"); |
1da177e4 LT |
993 | dvb_net_filter_sec_set(dev, &priv->secfilter, mac, mask_promisc); |
994 | break; | |
995 | } | |
996 | ||
5c7c0ca0 | 997 | netdev_dbg(dev, "start filtering\n"); |
1da177e4 LT |
998 | priv->secfeed->start_filtering(priv->secfeed); |
999 | } else if (priv->feedtype == DVB_NET_FEEDTYPE_ULE) { | |
18232ca6 | 1000 | struct timespec timeout = { 0, 10000000 }; // 10 msec |
1da177e4 LT |
1001 | |
1002 | /* we have payloads encapsulated in TS */ | |
5c7c0ca0 | 1003 | netdev_dbg(dev, "alloc tsfeed\n"); |
1da177e4 LT |
1004 | ret = demux->allocate_ts_feed(demux, &priv->tsfeed, dvb_net_ts_callback); |
1005 | if (ret < 0) { | |
1006 | printk("%s: could not allocate ts feed\n", dev->name); | |
1130ca45 | 1007 | goto error; |
1da177e4 LT |
1008 | } |
1009 | ||
1010 | /* Set netdevice pointer for ts decaps callback. */ | |
1011 | priv->tsfeed->priv = (void *)dev; | |
18232ca6 CP |
1012 | ret = priv->tsfeed->set(priv->tsfeed, |
1013 | priv->pid, /* pid */ | |
1014 | TS_PACKET, /* type */ | |
fde04ab9 | 1015 | DMX_PES_OTHER, /* pes type */ |
1da177e4 | 1016 | 32768, /* circular buffer size */ |
18232ca6 CP |
1017 | timeout /* timeout */ |
1018 | ); | |
1da177e4 LT |
1019 | |
1020 | if (ret < 0) { | |
1021 | printk("%s: could not set ts feed\n", dev->name); | |
1022 | priv->demux->release_ts_feed(priv->demux, priv->tsfeed); | |
1023 | priv->tsfeed = NULL; | |
1130ca45 | 1024 | goto error; |
1da177e4 LT |
1025 | } |
1026 | ||
5c7c0ca0 | 1027 | netdev_dbg(dev, "start filtering\n"); |
1da177e4 LT |
1028 | priv->tsfeed->start_filtering(priv->tsfeed); |
1029 | } else | |
1130ca45 | 1030 | ret = -EINVAL; |
1da177e4 | 1031 | |
1130ca45 | 1032 | error: |
3593cab5 | 1033 | mutex_unlock(&priv->mutex); |
1130ca45 | 1034 | return ret; |
1da177e4 LT |
1035 | } |
1036 | ||
1037 | static int dvb_net_feed_stop(struct net_device *dev) | |
1038 | { | |
0eade1f9 | 1039 | struct dvb_net_priv *priv = netdev_priv(dev); |
1130ca45 | 1040 | int i, ret = 0; |
1da177e4 | 1041 | |
3593cab5 | 1042 | mutex_lock(&priv->mutex); |
1da177e4 LT |
1043 | if (priv->feedtype == DVB_NET_FEEDTYPE_MPE) { |
1044 | if (priv->secfeed) { | |
1045 | if (priv->secfeed->is_filtering) { | |
5c7c0ca0 | 1046 | netdev_dbg(dev, "stop secfeed\n"); |
1da177e4 LT |
1047 | priv->secfeed->stop_filtering(priv->secfeed); |
1048 | } | |
1049 | ||
1050 | if (priv->secfilter) { | |
5c7c0ca0 | 1051 | netdev_dbg(dev, "release secfilter\n"); |
1da177e4 LT |
1052 | priv->secfeed->release_filter(priv->secfeed, |
1053 | priv->secfilter); | |
1054 | priv->secfilter=NULL; | |
1055 | } | |
1056 | ||
1057 | for (i=0; i<priv->multi_num; i++) { | |
1058 | if (priv->multi_secfilter[i]) { | |
5c7c0ca0 JP |
1059 | netdev_dbg(dev, "release multi_filter[%d]\n", |
1060 | i); | |
1da177e4 LT |
1061 | priv->secfeed->release_filter(priv->secfeed, |
1062 | priv->multi_secfilter[i]); | |
1063 | priv->multi_secfilter[i] = NULL; | |
1064 | } | |
1065 | } | |
1066 | ||
1067 | priv->demux->release_section_feed(priv->demux, priv->secfeed); | |
1068 | priv->secfeed = NULL; | |
1069 | } else | |
1070 | printk("%s: no feed to stop\n", dev->name); | |
1071 | } else if (priv->feedtype == DVB_NET_FEEDTYPE_ULE) { | |
1072 | if (priv->tsfeed) { | |
1073 | if (priv->tsfeed->is_filtering) { | |
5c7c0ca0 | 1074 | netdev_dbg(dev, "stop tsfeed\n"); |
1da177e4 LT |
1075 | priv->tsfeed->stop_filtering(priv->tsfeed); |
1076 | } | |
1077 | priv->demux->release_ts_feed(priv->demux, priv->tsfeed); | |
1078 | priv->tsfeed = NULL; | |
1079 | } | |
1080 | else | |
1081 | printk("%s: no ts feed to stop\n", dev->name); | |
1082 | } else | |
1130ca45 | 1083 | ret = -EINVAL; |
3593cab5 | 1084 | mutex_unlock(&priv->mutex); |
1130ca45 | 1085 | return ret; |
1da177e4 LT |
1086 | } |
1087 | ||
1088 | ||
22bedad3 | 1089 | static int dvb_set_mc_filter(struct net_device *dev, unsigned char *addr) |
1da177e4 | 1090 | { |
0eade1f9 | 1091 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1092 | |
1093 | if (priv->multi_num == DVB_NET_MULTICAST_MAX) | |
1094 | return -ENOMEM; | |
1095 | ||
22bedad3 | 1096 | memcpy(priv->multi_macs[priv->multi_num], addr, ETH_ALEN); |
1da177e4 LT |
1097 | |
1098 | priv->multi_num++; | |
1099 | return 0; | |
1100 | } | |
1101 | ||
1102 | ||
c4028958 | 1103 | static void wq_set_multicast_list (struct work_struct *work) |
1da177e4 | 1104 | { |
c4028958 DH |
1105 | struct dvb_net_priv *priv = |
1106 | container_of(work, struct dvb_net_priv, set_multicast_list_wq); | |
1107 | struct net_device *dev = priv->net; | |
1da177e4 LT |
1108 | |
1109 | dvb_net_feed_stop(dev); | |
1da177e4 | 1110 | priv->rx_mode = RX_MODE_UNI; |
b9e40857 | 1111 | netif_addr_lock_bh(dev); |
1da177e4 LT |
1112 | |
1113 | if (dev->flags & IFF_PROMISC) { | |
5c7c0ca0 | 1114 | netdev_dbg(dev, "promiscuous mode\n"); |
1da177e4 LT |
1115 | priv->rx_mode = RX_MODE_PROMISC; |
1116 | } else if ((dev->flags & IFF_ALLMULTI)) { | |
5c7c0ca0 | 1117 | netdev_dbg(dev, "allmulti mode\n"); |
1da177e4 | 1118 | priv->rx_mode = RX_MODE_ALL_MULTI; |
4cd24eaf | 1119 | } else if (!netdev_mc_empty(dev)) { |
22bedad3 | 1120 | struct netdev_hw_addr *ha; |
1da177e4 | 1121 | |
5c7c0ca0 JP |
1122 | netdev_dbg(dev, "set_mc_list, %d entries\n", |
1123 | netdev_mc_count(dev)); | |
1da177e4 LT |
1124 | |
1125 | priv->rx_mode = RX_MODE_MULTI; | |
1126 | priv->multi_num = 0; | |
1127 | ||
22bedad3 JP |
1128 | netdev_for_each_mc_addr(ha, dev) |
1129 | dvb_set_mc_filter(dev, ha->addr); | |
1da177e4 LT |
1130 | } |
1131 | ||
b9e40857 | 1132 | netif_addr_unlock_bh(dev); |
1da177e4 LT |
1133 | dvb_net_feed_start(dev); |
1134 | } | |
1135 | ||
1136 | ||
1137 | static void dvb_net_set_multicast_list (struct net_device *dev) | |
1138 | { | |
0eade1f9 | 1139 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1140 | schedule_work(&priv->set_multicast_list_wq); |
1141 | } | |
1142 | ||
1143 | ||
c4028958 | 1144 | static void wq_restart_net_feed (struct work_struct *work) |
1da177e4 | 1145 | { |
c4028958 DH |
1146 | struct dvb_net_priv *priv = |
1147 | container_of(work, struct dvb_net_priv, restart_net_feed_wq); | |
1148 | struct net_device *dev = priv->net; | |
1da177e4 LT |
1149 | |
1150 | if (netif_running(dev)) { | |
1151 | dvb_net_feed_stop(dev); | |
1152 | dvb_net_feed_start(dev); | |
1153 | } | |
1154 | } | |
1155 | ||
1156 | ||
1157 | static int dvb_net_set_mac (struct net_device *dev, void *p) | |
1158 | { | |
0eade1f9 | 1159 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1160 | struct sockaddr *addr=p; |
1161 | ||
1162 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | |
1163 | ||
1164 | if (netif_running(dev)) | |
1165 | schedule_work(&priv->restart_net_feed_wq); | |
1166 | ||
1167 | return 0; | |
1168 | } | |
1169 | ||
1170 | ||
1171 | static int dvb_net_open(struct net_device *dev) | |
1172 | { | |
0eade1f9 | 1173 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1174 | |
1175 | priv->in_use++; | |
1176 | dvb_net_feed_start(dev); | |
1177 | return 0; | |
1178 | } | |
1179 | ||
1180 | ||
1181 | static int dvb_net_stop(struct net_device *dev) | |
1182 | { | |
0eade1f9 | 1183 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1184 | |
1185 | priv->in_use--; | |
afd1a0c9 | 1186 | return dvb_net_feed_stop(dev); |
1da177e4 LT |
1187 | } |
1188 | ||
3b04ddde SH |
1189 | static const struct header_ops dvb_header_ops = { |
1190 | .create = eth_header, | |
1191 | .parse = eth_header_parse, | |
3b04ddde SH |
1192 | }; |
1193 | ||
fb875333 SH |
1194 | |
1195 | static const struct net_device_ops dvb_netdev_ops = { | |
1196 | .ndo_open = dvb_net_open, | |
1197 | .ndo_stop = dvb_net_stop, | |
1198 | .ndo_start_xmit = dvb_net_tx, | |
afc4b13d | 1199 | .ndo_set_rx_mode = dvb_net_set_multicast_list, |
fb875333 SH |
1200 | .ndo_set_mac_address = dvb_net_set_mac, |
1201 | .ndo_change_mtu = eth_change_mtu, | |
1202 | .ndo_validate_addr = eth_validate_addr, | |
1203 | }; | |
1204 | ||
1da177e4 LT |
1205 | static void dvb_net_setup(struct net_device *dev) |
1206 | { | |
1207 | ether_setup(dev); | |
1208 | ||
3b04ddde | 1209 | dev->header_ops = &dvb_header_ops; |
fb875333 | 1210 | dev->netdev_ops = &dvb_netdev_ops; |
1da177e4 | 1211 | dev->mtu = 4096; |
3b04ddde | 1212 | |
1da177e4 LT |
1213 | dev->flags |= IFF_NOARP; |
1214 | } | |
1215 | ||
1216 | static int get_if(struct dvb_net *dvbnet) | |
1217 | { | |
1218 | int i; | |
1219 | ||
1220 | for (i=0; i<DVB_NET_DEVICES_MAX; i++) | |
1221 | if (!dvbnet->state[i]) | |
1222 | break; | |
1223 | ||
1224 | if (i == DVB_NET_DEVICES_MAX) | |
1225 | return -1; | |
1226 | ||
1227 | dvbnet->state[i]=1; | |
1228 | return i; | |
1229 | } | |
1230 | ||
1231 | static int dvb_net_add_if(struct dvb_net *dvbnet, u16 pid, u8 feedtype) | |
1232 | { | |
1233 | struct net_device *net; | |
1234 | struct dvb_net_priv *priv; | |
1235 | int result; | |
1236 | int if_num; | |
1237 | ||
1238 | if (feedtype != DVB_NET_FEEDTYPE_MPE && feedtype != DVB_NET_FEEDTYPE_ULE) | |
1239 | return -EINVAL; | |
1240 | if ((if_num = get_if(dvbnet)) < 0) | |
1241 | return -EINVAL; | |
1242 | ||
c835a677 TG |
1243 | net = alloc_netdev(sizeof(struct dvb_net_priv), "dvb", |
1244 | NET_NAME_UNKNOWN, dvb_net_setup); | |
1da177e4 LT |
1245 | if (!net) |
1246 | return -ENOMEM; | |
1247 | ||
1248 | if (dvbnet->dvbdev->id) | |
1249 | snprintf(net->name, IFNAMSIZ, "dvb%d%u%d", | |
1250 | dvbnet->dvbdev->adapter->num, dvbnet->dvbdev->id, if_num); | |
1251 | else | |
1252 | /* compatibility fix to keep dvb0_0 format */ | |
1253 | snprintf(net->name, IFNAMSIZ, "dvb%d_%d", | |
1254 | dvbnet->dvbdev->adapter->num, if_num); | |
1255 | ||
1256 | net->addr_len = 6; | |
1257 | memcpy(net->dev_addr, dvbnet->dvbdev->adapter->proposed_mac, 6); | |
1258 | ||
1259 | dvbnet->device[if_num] = net; | |
1260 | ||
0eade1f9 | 1261 | priv = netdev_priv(net); |
c4028958 | 1262 | priv->net = net; |
1da177e4 LT |
1263 | priv->demux = dvbnet->demux; |
1264 | priv->pid = pid; | |
1265 | priv->rx_mode = RX_MODE_UNI; | |
1266 | priv->need_pusi = 1; | |
1267 | priv->tscc = 0; | |
1268 | priv->feedtype = feedtype; | |
1269 | reset_ule(priv); | |
1270 | ||
c4028958 DH |
1271 | INIT_WORK(&priv->set_multicast_list_wq, wq_set_multicast_list); |
1272 | INIT_WORK(&priv->restart_net_feed_wq, wq_restart_net_feed); | |
3593cab5 | 1273 | mutex_init(&priv->mutex); |
1da177e4 LT |
1274 | |
1275 | net->base_addr = pid; | |
1276 | ||
1277 | if ((result = register_netdev(net)) < 0) { | |
1278 | dvbnet->device[if_num] = NULL; | |
1279 | free_netdev(net); | |
1280 | return result; | |
1281 | } | |
1282 | printk("dvb_net: created network interface %s\n", net->name); | |
1283 | ||
1284 | return if_num; | |
1285 | } | |
1286 | ||
400b7083 | 1287 | static int dvb_net_remove_if(struct dvb_net *dvbnet, unsigned long num) |
1da177e4 LT |
1288 | { |
1289 | struct net_device *net = dvbnet->device[num]; | |
1290 | struct dvb_net_priv *priv; | |
1291 | ||
1292 | if (!dvbnet->state[num]) | |
1293 | return -EINVAL; | |
0eade1f9 | 1294 | priv = netdev_priv(net); |
1da177e4 LT |
1295 | if (priv->in_use) |
1296 | return -EBUSY; | |
1297 | ||
1298 | dvb_net_stop(net); | |
43829731 TH |
1299 | flush_work(&priv->set_multicast_list_wq); |
1300 | flush_work(&priv->restart_net_feed_wq); | |
1da177e4 LT |
1301 | printk("dvb_net: removed network interface %s\n", net->name); |
1302 | unregister_netdev(net); | |
1303 | dvbnet->state[num]=0; | |
1304 | dvbnet->device[num] = NULL; | |
1305 | free_netdev(net); | |
1306 | ||
1307 | return 0; | |
1308 | } | |
1309 | ||
16ef8def | 1310 | static int dvb_net_do_ioctl(struct file *file, |
1da177e4 LT |
1311 | unsigned int cmd, void *parg) |
1312 | { | |
0c53c70f JS |
1313 | struct dvb_device *dvbdev = file->private_data; |
1314 | struct dvb_net *dvbnet = dvbdev->priv; | |
30ad64b8 | 1315 | int ret = 0; |
1da177e4 LT |
1316 | |
1317 | if (((file->f_flags&O_ACCMODE)==O_RDONLY)) | |
1318 | return -EPERM; | |
1319 | ||
30ad64b8 NS |
1320 | if (mutex_lock_interruptible(&dvbnet->ioctl_mutex)) |
1321 | return -ERESTARTSYS; | |
1322 | ||
1da177e4 LT |
1323 | switch (cmd) { |
1324 | case NET_ADD_IF: | |
1325 | { | |
0c53c70f | 1326 | struct dvb_net_if *dvbnetif = parg; |
1da177e4 LT |
1327 | int result; |
1328 | ||
30ad64b8 NS |
1329 | if (!capable(CAP_SYS_ADMIN)) { |
1330 | ret = -EPERM; | |
1331 | goto ioctl_error; | |
1332 | } | |
1da177e4 | 1333 | |
30ad64b8 NS |
1334 | if (!try_module_get(dvbdev->adapter->module)) { |
1335 | ret = -EPERM; | |
1336 | goto ioctl_error; | |
1337 | } | |
1da177e4 LT |
1338 | |
1339 | result=dvb_net_add_if(dvbnet, dvbnetif->pid, dvbnetif->feedtype); | |
1340 | if (result<0) { | |
1341 | module_put(dvbdev->adapter->module); | |
30ad64b8 NS |
1342 | ret = result; |
1343 | goto ioctl_error; | |
1da177e4 LT |
1344 | } |
1345 | dvbnetif->if_num=result; | |
1346 | break; | |
1347 | } | |
1348 | case NET_GET_IF: | |
1349 | { | |
1350 | struct net_device *netdev; | |
1351 | struct dvb_net_priv *priv_data; | |
0c53c70f | 1352 | struct dvb_net_if *dvbnetif = parg; |
1da177e4 LT |
1353 | |
1354 | if (dvbnetif->if_num >= DVB_NET_DEVICES_MAX || | |
30ad64b8 NS |
1355 | !dvbnet->state[dvbnetif->if_num]) { |
1356 | ret = -EINVAL; | |
1357 | goto ioctl_error; | |
1358 | } | |
1da177e4 LT |
1359 | |
1360 | netdev = dvbnet->device[dvbnetif->if_num]; | |
1361 | ||
0eade1f9 | 1362 | priv_data = netdev_priv(netdev); |
1da177e4 LT |
1363 | dvbnetif->pid=priv_data->pid; |
1364 | dvbnetif->feedtype=priv_data->feedtype; | |
1365 | break; | |
1366 | } | |
1367 | case NET_REMOVE_IF: | |
1368 | { | |
30ad64b8 NS |
1369 | if (!capable(CAP_SYS_ADMIN)) { |
1370 | ret = -EPERM; | |
1371 | goto ioctl_error; | |
1372 | } | |
1373 | if ((unsigned long) parg >= DVB_NET_DEVICES_MAX) { | |
1374 | ret = -EINVAL; | |
1375 | goto ioctl_error; | |
1376 | } | |
e18828e4 | 1377 | ret = dvb_net_remove_if(dvbnet, (unsigned long) parg); |
1da177e4 LT |
1378 | if (!ret) |
1379 | module_put(dvbdev->adapter->module); | |
30ad64b8 | 1380 | break; |
1da177e4 LT |
1381 | } |
1382 | ||
06fe9fb4 | 1383 | /* binary compatibility cruft */ |
1da177e4 LT |
1384 | case __NET_ADD_IF_OLD: |
1385 | { | |
0c53c70f | 1386 | struct __dvb_net_if_old *dvbnetif = parg; |
1da177e4 LT |
1387 | int result; |
1388 | ||
30ad64b8 NS |
1389 | if (!capable(CAP_SYS_ADMIN)) { |
1390 | ret = -EPERM; | |
1391 | goto ioctl_error; | |
1392 | } | |
1da177e4 | 1393 | |
30ad64b8 NS |
1394 | if (!try_module_get(dvbdev->adapter->module)) { |
1395 | ret = -EPERM; | |
1396 | goto ioctl_error; | |
1397 | } | |
1da177e4 LT |
1398 | |
1399 | result=dvb_net_add_if(dvbnet, dvbnetif->pid, DVB_NET_FEEDTYPE_MPE); | |
1400 | if (result<0) { | |
1401 | module_put(dvbdev->adapter->module); | |
30ad64b8 NS |
1402 | ret = result; |
1403 | goto ioctl_error; | |
1da177e4 LT |
1404 | } |
1405 | dvbnetif->if_num=result; | |
1406 | break; | |
1407 | } | |
1408 | case __NET_GET_IF_OLD: | |
1409 | { | |
1410 | struct net_device *netdev; | |
1411 | struct dvb_net_priv *priv_data; | |
0c53c70f | 1412 | struct __dvb_net_if_old *dvbnetif = parg; |
1da177e4 LT |
1413 | |
1414 | if (dvbnetif->if_num >= DVB_NET_DEVICES_MAX || | |
30ad64b8 NS |
1415 | !dvbnet->state[dvbnetif->if_num]) { |
1416 | ret = -EINVAL; | |
1417 | goto ioctl_error; | |
1418 | } | |
1da177e4 LT |
1419 | |
1420 | netdev = dvbnet->device[dvbnetif->if_num]; | |
1421 | ||
0eade1f9 | 1422 | priv_data = netdev_priv(netdev); |
1da177e4 LT |
1423 | dvbnetif->pid=priv_data->pid; |
1424 | break; | |
1425 | } | |
1426 | default: | |
30ad64b8 NS |
1427 | ret = -ENOTTY; |
1428 | break; | |
1da177e4 | 1429 | } |
30ad64b8 NS |
1430 | |
1431 | ioctl_error: | |
1432 | mutex_unlock(&dvbnet->ioctl_mutex); | |
1433 | return ret; | |
1da177e4 LT |
1434 | } |
1435 | ||
16ef8def | 1436 | static long dvb_net_ioctl(struct file *file, |
1da177e4 LT |
1437 | unsigned int cmd, unsigned long arg) |
1438 | { | |
72024f1e | 1439 | return dvb_usercopy(file, cmd, arg, dvb_net_do_ioctl); |
1da177e4 LT |
1440 | } |
1441 | ||
2c4d3364 MR |
1442 | static int dvb_net_close(struct inode *inode, struct file *file) |
1443 | { | |
1444 | struct dvb_device *dvbdev = file->private_data; | |
1445 | struct dvb_net *dvbnet = dvbdev->priv; | |
1446 | ||
82e67246 | 1447 | dvb_generic_release(inode, file); |
2c4d3364 | 1448 | |
7caf2184 | 1449 | if(dvbdev->users == 1 && dvbnet->exit == 1) |
2c4d3364 | 1450 | wake_up(&dvbdev->wait_queue); |
2c4d3364 MR |
1451 | return 0; |
1452 | } | |
1453 | ||
1454 | ||
784e29d2 | 1455 | static const struct file_operations dvb_net_fops = { |
1da177e4 | 1456 | .owner = THIS_MODULE, |
16ef8def | 1457 | .unlocked_ioctl = dvb_net_ioctl, |
1da177e4 | 1458 | .open = dvb_generic_open, |
2c4d3364 | 1459 | .release = dvb_net_close, |
6038f373 | 1460 | .llseek = noop_llseek, |
1da177e4 LT |
1461 | }; |
1462 | ||
e3d65c33 | 1463 | static const struct dvb_device dvbdev_net = { |
afd1a0c9 MCC |
1464 | .priv = NULL, |
1465 | .users = 1, | |
1466 | .writers = 1, | |
e3d65c33 | 1467 | #if defined(CONFIG_MEDIA_CONTROLLER_DVB) |
e4fd3bc5 | 1468 | .name = "dvb-net", |
e3d65c33 | 1469 | #endif |
afd1a0c9 | 1470 | .fops = &dvb_net_fops, |
1da177e4 LT |
1471 | }; |
1472 | ||
1da177e4 LT |
1473 | void dvb_net_release (struct dvb_net *dvbnet) |
1474 | { | |
1475 | int i; | |
1476 | ||
2c4d3364 MR |
1477 | dvbnet->exit = 1; |
1478 | if (dvbnet->dvbdev->users < 1) | |
1479 | wait_event(dvbnet->dvbdev->wait_queue, | |
1480 | dvbnet->dvbdev->users==1); | |
1481 | ||
1da177e4 LT |
1482 | dvb_unregister_device(dvbnet->dvbdev); |
1483 | ||
1484 | for (i=0; i<DVB_NET_DEVICES_MAX; i++) { | |
1485 | if (!dvbnet->state[i]) | |
1486 | continue; | |
1487 | dvb_net_remove_if(dvbnet, i); | |
1488 | } | |
1489 | } | |
1490 | EXPORT_SYMBOL(dvb_net_release); | |
1491 | ||
1492 | ||
1493 | int dvb_net_init (struct dvb_adapter *adap, struct dvb_net *dvbnet, | |
1494 | struct dmx_demux *dmx) | |
1495 | { | |
1496 | int i; | |
1497 | ||
30ad64b8 | 1498 | mutex_init(&dvbnet->ioctl_mutex); |
1da177e4 LT |
1499 | dvbnet->demux = dmx; |
1500 | ||
1501 | for (i=0; i<DVB_NET_DEVICES_MAX; i++) | |
1502 | dvbnet->state[i] = 0; | |
1503 | ||
58fae673 | 1504 | return dvb_register_device(adap, &dvbnet->dvbdev, &dvbdev_net, |
1da177e4 | 1505 | dvbnet, DVB_DEVICE_NET); |
1da177e4 LT |
1506 | } |
1507 | EXPORT_SYMBOL(dvb_net_init); |