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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. | |
bcb63314 SA |
26 | * To obtain the license, point your browser to |
27 | * http://www.gnu.org/copyleft/gpl.html | |
1da177e4 LT |
28 | */ |
29 | ||
30 | /* | |
31 | * ULE ChangeLog: | |
32 | * Feb 2004: hl/ws v1: Implementing draft-fair-ipdvb-ule-01.txt | |
33 | * | |
34 | * Dec 2004: hl/ws v2: Implementing draft-ietf-ipdvb-ule-03.txt: | |
35 | * ULE Extension header handling. | |
36 | * Bugreports by Moritz Vieth and Hanno Tersteegen, | |
37 | * Fraunhofer Institute for Open Communication Systems | |
38 | * Competence Center for Advanced Satellite Communications. | |
39 | * Bugfixes and robustness improvements. | |
40 | * Filtering on dest MAC addresses, if present (D-Bit = 0) | |
41 | * ULE_DEBUG compile-time option. | |
18232ca6 CP |
42 | * Apr 2006: cp v3: Bugfixes and compliency with RFC 4326 (ULE) by |
43 | * Christian Praehauser <cpraehaus@cosy.sbg.ac.at>, | |
44 | * Paris Lodron University of Salzburg. | |
1da177e4 LT |
45 | */ |
46 | ||
47 | /* | |
48 | * FIXME / TODO (dvb_net.c): | |
49 | * | |
50 | * Unloading does not work for 2.6.9 kernels: a refcount doesn't go to zero. | |
51 | * | |
1da177e4 LT |
52 | */ |
53 | ||
b3ad24d2 MCC |
54 | #define pr_fmt(fmt) "dvb_net: " fmt |
55 | ||
1da177e4 LT |
56 | #include <linux/module.h> |
57 | #include <linux/kernel.h> | |
58 | #include <linux/netdevice.h> | |
59 | #include <linux/etherdevice.h> | |
60 | #include <linux/dvb/net.h> | |
61 | #include <linux/uio.h> | |
7c0f6ba6 | 62 | #include <linux/uaccess.h> |
1da177e4 | 63 | #include <linux/crc32.h> |
3593cab5 | 64 | #include <linux/mutex.h> |
d43c36dc | 65 | #include <linux/sched.h> |
1da177e4 LT |
66 | |
67 | #include "dvb_demux.h" | |
68 | #include "dvb_net.h" | |
69 | ||
1da177e4 LT |
70 | static inline __u32 iov_crc32( __u32 c, struct kvec *iov, unsigned int cnt ) |
71 | { | |
72 | unsigned int j; | |
73 | for (j = 0; j < cnt; j++) | |
74 | c = crc32_be( c, iov[j].iov_base, iov[j].iov_len ); | |
75 | return c; | |
76 | } | |
77 | ||
78 | ||
79 | #define DVB_NET_MULTICAST_MAX 10 | |
80 | ||
81 | #undef ULE_DEBUG | |
82 | ||
83 | #ifdef ULE_DEBUG | |
84 | ||
4bad5d2d | 85 | static void hexdump(const unsigned char *buf, unsigned short len) |
1da177e4 | 86 | { |
4bad5d2d | 87 | print_hex_dump_debug("", DUMP_PREFIX_OFFSET, 16, 1, buf, len, true); |
1da177e4 LT |
88 | } |
89 | ||
90 | #endif | |
91 | ||
92 | struct dvb_net_priv { | |
93 | int in_use; | |
1da177e4 | 94 | u16 pid; |
c4028958 | 95 | struct net_device *net; |
1da177e4 LT |
96 | struct dvb_net *host; |
97 | struct dmx_demux *demux; | |
98 | struct dmx_section_feed *secfeed; | |
99 | struct dmx_section_filter *secfilter; | |
100 | struct dmx_ts_feed *tsfeed; | |
101 | int multi_num; | |
102 | struct dmx_section_filter *multi_secfilter[DVB_NET_MULTICAST_MAX]; | |
103 | unsigned char multi_macs[DVB_NET_MULTICAST_MAX][6]; | |
104 | int rx_mode; | |
105 | #define RX_MODE_UNI 0 | |
106 | #define RX_MODE_MULTI 1 | |
107 | #define RX_MODE_ALL_MULTI 2 | |
108 | #define RX_MODE_PROMISC 3 | |
109 | struct work_struct set_multicast_list_wq; | |
110 | struct work_struct restart_net_feed_wq; | |
111 | unsigned char feedtype; /* Either FEED_TYPE_ or FEED_TYPE_ULE */ | |
112 | int need_pusi; /* Set to 1, if synchronization on PUSI required. */ | |
113 | unsigned char tscc; /* TS continuity counter after sync on PUSI. */ | |
114 | struct sk_buff *ule_skb; /* ULE SNDU decodes into this buffer. */ | |
115 | unsigned char *ule_next_hdr; /* Pointer into skb to next ULE extension header. */ | |
116 | unsigned short ule_sndu_len; /* ULE SNDU length in bytes, w/o D-Bit. */ | |
117 | unsigned short ule_sndu_type; /* ULE SNDU type field, complete. */ | |
118 | unsigned char ule_sndu_type_1; /* ULE SNDU type field, if split across 2 TS cells. */ | |
119 | unsigned char ule_dbit; /* Whether the DestMAC address present | |
120 | * or not (bit is set). */ | |
121 | unsigned char ule_bridged; /* Whether the ULE_BRIDGED extension header was found. */ | |
122 | int ule_sndu_remain; /* Nr. of bytes still required for current ULE SNDU. */ | |
123 | unsigned long ts_count; /* Current ts cell counter. */ | |
3593cab5 | 124 | struct mutex mutex; |
1da177e4 LT |
125 | }; |
126 | ||
127 | ||
128 | /** | |
129 | * Determine the packet's protocol ID. The rule here is that we | |
130 | * assume 802.3 if the type field is short enough to be a length. | |
131 | * This is normal practice and works for any 'now in use' protocol. | |
132 | * | |
133 | * stolen from eth.c out of the linux kernel, hacked for dvb-device | |
134 | * by Michael Holzt <kju@debian.org> | |
135 | */ | |
12fbcef1 | 136 | static __be16 dvb_net_eth_type_trans(struct sk_buff *skb, |
1da177e4 LT |
137 | struct net_device *dev) |
138 | { | |
139 | struct ethhdr *eth; | |
140 | unsigned char *rawp; | |
141 | ||
98e399f8 | 142 | skb_reset_mac_header(skb); |
1da177e4 | 143 | skb_pull(skb,dev->hard_header_len); |
1da177e4 | 144 | eth = eth_hdr(skb); |
1da177e4 LT |
145 | |
146 | if (*eth->h_dest & 1) { | |
5e231c2c | 147 | if(ether_addr_equal(eth->h_dest,dev->broadcast)) |
1da177e4 LT |
148 | skb->pkt_type=PACKET_BROADCAST; |
149 | else | |
150 | skb->pkt_type=PACKET_MULTICAST; | |
151 | } | |
152 | ||
e5c5d22e | 153 | if (ntohs(eth->h_proto) >= ETH_P_802_3_MIN) |
1da177e4 LT |
154 | return eth->h_proto; |
155 | ||
156 | rawp = skb->data; | |
157 | ||
158 | /** | |
159 | * This is a magic hack to spot IPX packets. Older Novell breaks | |
160 | * the protocol design and runs IPX over 802.3 without an 802.2 LLC | |
161 | * layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This | |
162 | * won't work for fault tolerant netware but does for the rest. | |
163 | */ | |
164 | if (*(unsigned short *)rawp == 0xFFFF) | |
165 | return htons(ETH_P_802_3); | |
166 | ||
167 | /** | |
168 | * Real 802.2 LLC | |
169 | */ | |
170 | return htons(ETH_P_802_2); | |
171 | } | |
172 | ||
173 | #define TS_SZ 188 | |
174 | #define TS_SYNC 0x47 | |
175 | #define TS_TEI 0x80 | |
176 | #define TS_SC 0xC0 | |
177 | #define TS_PUSI 0x40 | |
178 | #define TS_AF_A 0x20 | |
179 | #define TS_AF_D 0x10 | |
180 | ||
181 | /* ULE Extension Header handlers. */ | |
182 | ||
183 | #define ULE_TEST 0 | |
184 | #define ULE_BRIDGED 1 | |
185 | ||
18232ca6 CP |
186 | #define ULE_OPTEXTHDR_PADDING 0 |
187 | ||
1da177e4 LT |
188 | static int ule_test_sndu( struct dvb_net_priv *p ) |
189 | { | |
190 | return -1; | |
191 | } | |
192 | ||
193 | static int ule_bridged_sndu( struct dvb_net_priv *p ) | |
194 | { | |
18232ca6 | 195 | struct ethhdr *hdr = (struct ethhdr*) p->ule_next_hdr; |
e5c5d22e | 196 | if(ntohs(hdr->h_proto) < ETH_P_802_3_MIN) { |
18232ca6 | 197 | int framelen = p->ule_sndu_len - ((p->ule_next_hdr+sizeof(struct ethhdr)) - p->ule_skb->data); |
e5c5d22e | 198 | /* A frame Type < ETH_P_802_3_MIN for a bridged frame, introduces a LLC Length field. */ |
18232ca6 CP |
199 | if(framelen != ntohs(hdr->h_proto)) { |
200 | return -1; | |
201 | } | |
202 | } | |
203 | /* Note: | |
204 | * From RFC4326: | |
205 | * "A bridged SNDU is a Mandatory Extension Header of Type 1. | |
206 | * It must be the final (or only) extension header specified in the header chain of a SNDU." | |
207 | * The 'ule_bridged' flag will cause the extension header processing loop to terminate. | |
1da177e4 LT |
208 | */ |
209 | p->ule_bridged = 1; | |
210 | return 0; | |
211 | } | |
212 | ||
18232ca6 CP |
213 | static int ule_exthdr_padding(struct dvb_net_priv *p) |
214 | { | |
215 | return 0; | |
216 | } | |
1da177e4 LT |
217 | |
218 | /** Handle ULE extension headers. | |
219 | * Function is called after a successful CRC32 verification of an ULE SNDU to complete its decoding. | |
220 | * Returns: >= 0: nr. of bytes consumed by next extension header | |
221 | * -1: Mandatory extension header that is not recognized or TEST SNDU; discard. | |
222 | */ | |
223 | static int handle_one_ule_extension( struct dvb_net_priv *p ) | |
224 | { | |
225 | /* Table of mandatory extension header handlers. The header type is the index. */ | |
226 | static int (*ule_mandatory_ext_handlers[255])( struct dvb_net_priv *p ) = | |
227 | { [0] = ule_test_sndu, [1] = ule_bridged_sndu, [2] = NULL, }; | |
228 | ||
229 | /* Table of optional extension header handlers. The header type is the index. */ | |
18232ca6 CP |
230 | static int (*ule_optional_ext_handlers[255])( struct dvb_net_priv *p ) = |
231 | { [0] = ule_exthdr_padding, [1] = NULL, }; | |
1da177e4 LT |
232 | |
233 | int ext_len = 0; | |
234 | unsigned char hlen = (p->ule_sndu_type & 0x0700) >> 8; | |
235 | unsigned char htype = p->ule_sndu_type & 0x00FF; | |
236 | ||
237 | /* Discriminate mandatory and optional extension headers. */ | |
238 | if (hlen == 0) { | |
239 | /* Mandatory extension header */ | |
240 | if (ule_mandatory_ext_handlers[htype]) { | |
241 | ext_len = ule_mandatory_ext_handlers[htype]( p ); | |
18232ca6 CP |
242 | if(ext_len >= 0) { |
243 | p->ule_next_hdr += ext_len; | |
244 | if (!p->ule_bridged) { | |
12fbcef1 | 245 | p->ule_sndu_type = ntohs(*(__be16 *)p->ule_next_hdr); |
18232ca6 CP |
246 | p->ule_next_hdr += 2; |
247 | } else { | |
12fbcef1 | 248 | p->ule_sndu_type = ntohs(*(__be16 *)(p->ule_next_hdr + ((p->ule_dbit ? 2 : 3) * ETH_ALEN))); |
18232ca6 CP |
249 | /* This assures the extension handling loop will terminate. */ |
250 | } | |
1da177e4 | 251 | } |
18232ca6 | 252 | // else: extension handler failed or SNDU should be discarded |
1da177e4 LT |
253 | } else |
254 | ext_len = -1; /* SNDU has to be discarded. */ | |
255 | } else { | |
256 | /* Optional extension header. Calculate the length. */ | |
18232ca6 | 257 | ext_len = hlen << 1; |
1da177e4 LT |
258 | /* Process the optional extension header according to its type. */ |
259 | if (ule_optional_ext_handlers[htype]) | |
260 | (void)ule_optional_ext_handlers[htype]( p ); | |
261 | p->ule_next_hdr += ext_len; | |
12fbcef1 | 262 | p->ule_sndu_type = ntohs( *(__be16 *)(p->ule_next_hdr-2) ); |
18232ca6 CP |
263 | /* |
264 | * note: the length of the next header type is included in the | |
265 | * length of THIS optional extension header | |
266 | */ | |
1da177e4 LT |
267 | } |
268 | ||
269 | return ext_len; | |
270 | } | |
271 | ||
272 | static int handle_ule_extensions( struct dvb_net_priv *p ) | |
273 | { | |
274 | int total_ext_len = 0, l; | |
275 | ||
276 | p->ule_next_hdr = p->ule_skb->data; | |
277 | do { | |
278 | l = handle_one_ule_extension( p ); | |
18232ca6 CP |
279 | if (l < 0) |
280 | return l; /* Stop extension header processing and discard SNDU. */ | |
1da177e4 | 281 | total_ext_len += l; |
18232ca6 | 282 | #ifdef ULE_DEBUG |
5c7c0ca0 JP |
283 | pr_debug("ule_next_hdr=%p, ule_sndu_type=%i, l=%i, total_ext_len=%i\n", |
284 | p->ule_next_hdr, (int)p->ule_sndu_type, | |
285 | l, total_ext_len); | |
18232ca6 | 286 | #endif |
1da177e4 | 287 | |
e5c5d22e | 288 | } while (p->ule_sndu_type < ETH_P_802_3_MIN); |
1da177e4 LT |
289 | |
290 | return total_ext_len; | |
291 | } | |
292 | ||
293 | ||
294 | /** Prepare for a new ULE SNDU: reset the decoder state. */ | |
295 | static inline void reset_ule( struct dvb_net_priv *p ) | |
296 | { | |
297 | p->ule_skb = NULL; | |
298 | p->ule_next_hdr = NULL; | |
299 | p->ule_sndu_len = 0; | |
300 | p->ule_sndu_type = 0; | |
301 | p->ule_sndu_type_1 = 0; | |
302 | p->ule_sndu_remain = 0; | |
303 | p->ule_dbit = 0xFF; | |
304 | p->ule_bridged = 0; | |
305 | } | |
306 | ||
307 | /** | |
308 | * Decode ULE SNDUs according to draft-ietf-ipdvb-ule-03.txt from a sequence of | |
309 | * TS cells of a single PID. | |
310 | */ | |
1da177e4 | 311 | |
efb9ab67 MCC |
312 | struct dvb_net_ule_handle { |
313 | struct net_device *dev; | |
314 | struct dvb_net_priv *priv; | |
315 | struct ethhdr *ethh; | |
316 | const u8 *buf; | |
317 | size_t buf_len; | |
318 | unsigned long skipped; | |
319 | const u8 *ts, *ts_end, *from_where; | |
320 | u8 ts_remain, how_much, new_ts; | |
321 | bool error; | |
1da177e4 | 322 | #ifdef ULE_DEBUG |
efb9ab67 MCC |
323 | /* |
324 | * The code inside ULE_DEBUG keeps a history of the | |
325 | * last 100 TS cells processed. | |
326 | */ | |
1da177e4 | 327 | static unsigned char ule_hist[100*TS_SZ]; |
ff699e6b | 328 | static unsigned char *ule_where = ule_hist, ule_dump; |
1da177e4 | 329 | #endif |
efb9ab67 MCC |
330 | }; |
331 | ||
8b0041db MCC |
332 | static int dvb_net_ule_new_ts_cell(struct dvb_net_ule_handle *h) |
333 | { | |
334 | /* We are about to process a new TS cell. */ | |
335 | ||
336 | #ifdef ULE_DEBUG | |
337 | if (h->ule_where >= &h->ule_hist[100*TS_SZ]) | |
338 | h->ule_where = h->ule_hist; | |
339 | memcpy(h->ule_where, h->ts, TS_SZ); | |
340 | if (h->ule_dump) { | |
341 | hexdump(h->ule_where, TS_SZ); | |
342 | h->ule_dump = 0; | |
343 | } | |
344 | h->ule_where += TS_SZ; | |
345 | #endif | |
346 | ||
347 | /* | |
348 | * Check TS h->error conditions: sync_byte, transport_error_indicator, | |
349 | * scrambling_control . | |
350 | */ | |
351 | if ((h->ts[0] != TS_SYNC) || (h->ts[1] & TS_TEI) || | |
352 | ((h->ts[3] & TS_SC) != 0)) { | |
353 | pr_warn("%lu: Invalid TS cell: SYNC %#x, TEI %u, SC %#x.\n", | |
354 | h->priv->ts_count, h->ts[0], | |
355 | (h->ts[1] & TS_TEI) >> 7, | |
356 | (h->ts[3] & TS_SC) >> 6); | |
357 | ||
358 | /* Drop partly decoded SNDU, reset state, resync on PUSI. */ | |
359 | if (h->priv->ule_skb) { | |
360 | dev_kfree_skb(h->priv->ule_skb); | |
361 | /* Prepare for next SNDU. */ | |
362 | h->dev->stats.rx_errors++; | |
363 | h->dev->stats.rx_frame_errors++; | |
364 | } | |
365 | reset_ule(h->priv); | |
366 | h->priv->need_pusi = 1; | |
367 | ||
368 | /* Continue with next TS cell. */ | |
369 | h->ts += TS_SZ; | |
370 | h->priv->ts_count++; | |
371 | return 1; | |
372 | } | |
373 | ||
374 | h->ts_remain = 184; | |
375 | h->from_where = h->ts + 4; | |
376 | ||
377 | return 0; | |
378 | } | |
379 | ||
380 | static int dvb_net_ule_ts_pusi(struct dvb_net_ule_handle *h) | |
381 | { | |
382 | if (h->ts[1] & TS_PUSI) { | |
383 | /* Find beginning of first ULE SNDU in current TS cell. */ | |
384 | /* Synchronize continuity counter. */ | |
385 | h->priv->tscc = h->ts[3] & 0x0F; | |
386 | /* There is a pointer field here. */ | |
387 | if (h->ts[4] > h->ts_remain) { | |
388 | pr_err("%lu: Invalid ULE packet (pointer field %d)\n", | |
389 | h->priv->ts_count, h->ts[4]); | |
390 | h->ts += TS_SZ; | |
391 | h->priv->ts_count++; | |
392 | return 1; | |
393 | } | |
394 | /* Skip to destination of pointer field. */ | |
395 | h->from_where = &h->ts[5] + h->ts[4]; | |
396 | h->ts_remain -= 1 + h->ts[4]; | |
397 | h->skipped = 0; | |
398 | } else { | |
399 | h->skipped++; | |
400 | h->ts += TS_SZ; | |
401 | h->priv->ts_count++; | |
402 | return 1; | |
403 | } | |
404 | ||
405 | return 0; | |
406 | } | |
407 | ||
408 | static int dvb_net_ule_new_ts(struct dvb_net_ule_handle *h) | |
409 | { | |
410 | /* Check continuity counter. */ | |
411 | if ((h->ts[3] & 0x0F) == h->priv->tscc) | |
412 | h->priv->tscc = (h->priv->tscc + 1) & 0x0F; | |
413 | else { | |
414 | /* TS discontinuity handling: */ | |
415 | pr_warn("%lu: TS discontinuity: got %#x, expected %#x.\n", | |
416 | h->priv->ts_count, h->ts[3] & 0x0F, | |
417 | h->priv->tscc); | |
418 | /* Drop partly decoded SNDU, reset state, resync on PUSI. */ | |
419 | if (h->priv->ule_skb) { | |
420 | dev_kfree_skb(h->priv->ule_skb); | |
421 | /* Prepare for next SNDU. */ | |
422 | // reset_ule(h->priv); moved to below. | |
423 | h->dev->stats.rx_errors++; | |
424 | h->dev->stats.rx_frame_errors++; | |
425 | } | |
426 | reset_ule(h->priv); | |
427 | /* skip to next PUSI. */ | |
428 | h->priv->need_pusi = 1; | |
429 | return 1; | |
430 | } | |
431 | /* | |
432 | * If we still have an incomplete payload, but PUSI is | |
433 | * set; some TS cells are missing. | |
434 | * This is only possible here, if we missed exactly 16 TS | |
435 | * cells (continuity counter wrap). | |
436 | */ | |
437 | if (h->ts[1] & TS_PUSI) { | |
438 | if (!h->priv->need_pusi) { | |
439 | if (!(*h->from_where < (h->ts_remain-1)) || | |
440 | *h->from_where != h->priv->ule_sndu_remain) { | |
441 | /* | |
442 | * Pointer field is invalid. | |
443 | * Drop this TS cell and any started ULE SNDU. | |
444 | */ | |
445 | pr_warn("%lu: Invalid pointer field: %u.\n", | |
446 | h->priv->ts_count, | |
447 | *h->from_where); | |
448 | ||
449 | /* | |
450 | * Drop partly decoded SNDU, reset state, | |
451 | * resync on PUSI. | |
452 | */ | |
453 | if (h->priv->ule_skb) { | |
454 | h->error = true; | |
455 | dev_kfree_skb(h->priv->ule_skb); | |
456 | } | |
457 | ||
458 | if (h->error || h->priv->ule_sndu_remain) { | |
459 | h->dev->stats.rx_errors++; | |
460 | h->dev->stats.rx_frame_errors++; | |
461 | h->error = false; | |
462 | } | |
463 | ||
464 | reset_ule(h->priv); | |
465 | h->priv->need_pusi = 1; | |
466 | return 1; | |
467 | } | |
468 | /* | |
469 | * Skip pointer field (we're processing a | |
470 | * packed payload). | |
471 | */ | |
472 | h->from_where += 1; | |
473 | h->ts_remain -= 1; | |
474 | } else | |
475 | h->priv->need_pusi = 0; | |
476 | ||
477 | if (h->priv->ule_sndu_remain > 183) { | |
478 | /* | |
479 | * Current SNDU lacks more data than there | |
480 | * could be available in the current TS cell. | |
481 | */ | |
482 | h->dev->stats.rx_errors++; | |
483 | h->dev->stats.rx_length_errors++; | |
484 | pr_warn("%lu: Expected %d more SNDU bytes, but got PUSI (pf %d, h->ts_remain %d). Flushing incomplete payload.\n", | |
485 | h->priv->ts_count, | |
486 | h->priv->ule_sndu_remain, | |
487 | h->ts[4], h->ts_remain); | |
488 | dev_kfree_skb(h->priv->ule_skb); | |
489 | /* Prepare for next SNDU. */ | |
490 | reset_ule(h->priv); | |
491 | /* | |
492 | * Resync: go to where pointer field points to: | |
493 | * start of next ULE SNDU. | |
494 | */ | |
495 | h->from_where += h->ts[4]; | |
496 | h->ts_remain -= h->ts[4]; | |
497 | } | |
498 | } | |
499 | return 0; | |
500 | } | |
501 | ||
502 | ||
503 | /* | |
504 | * Start a new payload with skb. | |
505 | * Find ULE header. It is only guaranteed that the | |
506 | * length field (2 bytes) is contained in the current | |
507 | * TS. | |
508 | * Check h.ts_remain has to be >= 2 here. | |
509 | */ | |
510 | static int dvb_net_ule_new_payload(struct dvb_net_ule_handle *h) | |
511 | { | |
512 | if (h->ts_remain < 2) { | |
513 | pr_warn("Invalid payload packing: only %d bytes left in TS. Resyncing.\n", | |
514 | h->ts_remain); | |
515 | h->priv->ule_sndu_len = 0; | |
516 | h->priv->need_pusi = 1; | |
517 | h->ts += TS_SZ; | |
518 | return 1; | |
519 | } | |
520 | ||
521 | if (!h->priv->ule_sndu_len) { | |
522 | /* Got at least two bytes, thus extrace the SNDU length. */ | |
523 | h->priv->ule_sndu_len = h->from_where[0] << 8 | | |
524 | h->from_where[1]; | |
525 | if (h->priv->ule_sndu_len & 0x8000) { | |
526 | /* D-Bit is set: no dest mac present. */ | |
527 | h->priv->ule_sndu_len &= 0x7FFF; | |
528 | h->priv->ule_dbit = 1; | |
529 | } else | |
530 | h->priv->ule_dbit = 0; | |
531 | ||
532 | if (h->priv->ule_sndu_len < 5) { | |
533 | pr_warn("%lu: Invalid ULE SNDU length %u. Resyncing.\n", | |
534 | h->priv->ts_count, | |
535 | h->priv->ule_sndu_len); | |
536 | h->dev->stats.rx_errors++; | |
537 | h->dev->stats.rx_length_errors++; | |
538 | h->priv->ule_sndu_len = 0; | |
539 | h->priv->need_pusi = 1; | |
540 | h->new_ts = 1; | |
541 | h->ts += TS_SZ; | |
542 | h->priv->ts_count++; | |
543 | return 1; | |
544 | } | |
545 | h->ts_remain -= 2; /* consume the 2 bytes SNDU length. */ | |
546 | h->from_where += 2; | |
547 | } | |
548 | ||
549 | h->priv->ule_sndu_remain = h->priv->ule_sndu_len + 2; | |
550 | /* | |
551 | * State of current TS: | |
552 | * h->ts_remain (remaining bytes in the current TS cell) | |
553 | * 0 ule_type is not available now, we need the next TS cell | |
554 | * 1 the first byte of the ule_type is present | |
555 | * >=2 full ULE header present, maybe some payload data as well. | |
556 | */ | |
557 | switch (h->ts_remain) { | |
558 | case 1: | |
559 | h->priv->ule_sndu_remain--; | |
560 | h->priv->ule_sndu_type = h->from_where[0] << 8; | |
561 | ||
562 | /* first byte of ule_type is set. */ | |
563 | h->priv->ule_sndu_type_1 = 1; | |
564 | h->ts_remain -= 1; | |
565 | h->from_where += 1; | |
566 | /* fallthrough */ | |
567 | case 0: | |
568 | h->new_ts = 1; | |
569 | h->ts += TS_SZ; | |
570 | h->priv->ts_count++; | |
571 | return 1; | |
572 | ||
573 | default: /* complete ULE header is present in current TS. */ | |
574 | /* Extract ULE type field. */ | |
575 | if (h->priv->ule_sndu_type_1) { | |
576 | h->priv->ule_sndu_type_1 = 0; | |
577 | h->priv->ule_sndu_type |= h->from_where[0]; | |
578 | h->from_where += 1; /* points to payload start. */ | |
579 | h->ts_remain -= 1; | |
580 | } else { | |
581 | /* Complete type is present in new TS. */ | |
582 | h->priv->ule_sndu_type = h->from_where[0] << 8 | | |
583 | h->from_where[1]; | |
584 | h->from_where += 2; /* points to payload start. */ | |
585 | h->ts_remain -= 2; | |
586 | } | |
587 | break; | |
588 | } | |
589 | ||
590 | /* | |
591 | * Allocate the skb (decoder target buffer) with the correct size, | |
592 | * as follows: | |
593 | * | |
594 | * prepare for the largest case: bridged SNDU with MAC address | |
595 | * (dbit = 0). | |
596 | */ | |
597 | h->priv->ule_skb = dev_alloc_skb(h->priv->ule_sndu_len + | |
598 | ETH_HLEN + ETH_ALEN); | |
599 | if (!h->priv->ule_skb) { | |
600 | pr_notice("%s: Memory squeeze, dropping packet.\n", | |
601 | h->dev->name); | |
602 | h->dev->stats.rx_dropped++; | |
603 | return -1; | |
604 | } | |
605 | ||
606 | /* This includes the CRC32 _and_ dest mac, if !dbit. */ | |
607 | h->priv->ule_sndu_remain = h->priv->ule_sndu_len; | |
608 | h->priv->ule_skb->dev = h->dev; | |
609 | /* | |
610 | * Leave space for Ethernet or bridged SNDU header | |
611 | * (eth hdr plus one MAC addr). | |
612 | */ | |
613 | skb_reserve(h->priv->ule_skb, ETH_HLEN + ETH_ALEN); | |
614 | ||
615 | return 0; | |
616 | } | |
617 | ||
618 | ||
619 | static int dvb_net_ule_should_drop(struct dvb_net_ule_handle *h) | |
620 | { | |
621 | static const u8 bc_addr[ETH_ALEN] = { [0 ... ETH_ALEN - 1] = 0xff }; | |
622 | ||
623 | /* | |
624 | * The destination MAC address is the next data in the skb. It comes | |
625 | * before any extension headers. | |
626 | * | |
627 | * Check if the payload of this SNDU should be passed up the stack. | |
628 | */ | |
629 | if (h->priv->rx_mode == RX_MODE_PROMISC) | |
630 | return 0; | |
631 | ||
632 | if (h->priv->ule_skb->data[0] & 0x01) { | |
633 | /* multicast or broadcast */ | |
634 | if (!ether_addr_equal(h->priv->ule_skb->data, bc_addr)) { | |
635 | /* multicast */ | |
636 | if (h->priv->rx_mode == RX_MODE_MULTI) { | |
637 | int i; | |
638 | ||
639 | for (i = 0; i < h->priv->multi_num && | |
640 | !ether_addr_equal(h->priv->ule_skb->data, | |
641 | h->priv->multi_macs[i]); | |
642 | i++) | |
643 | ; | |
644 | if (i == h->priv->multi_num) | |
645 | return 1; | |
646 | } else if (h->priv->rx_mode != RX_MODE_ALL_MULTI) | |
647 | return 1; /* no broadcast; */ | |
648 | /* | |
649 | * else: | |
650 | * all multicast mode: accept all multicast packets | |
651 | */ | |
652 | } | |
653 | /* else: broadcast */ | |
654 | } else if (!ether_addr_equal(h->priv->ule_skb->data, h->dev->dev_addr)) | |
655 | return 1; | |
656 | ||
657 | return 0; | |
658 | } | |
659 | ||
660 | ||
661 | static void dvb_net_ule_check_crc(struct dvb_net_ule_handle *h, | |
662 | u32 ule_crc, u32 expected_crc) | |
663 | { | |
664 | u8 dest_addr[ETH_ALEN]; | |
665 | ||
666 | if (ule_crc != expected_crc) { | |
667 | pr_warn("%lu: CRC32 check FAILED: %08x / %08x, SNDU len %d type %#x, ts_remain %d, next 2: %x.\n", | |
668 | h->priv->ts_count, ule_crc, expected_crc, | |
669 | h->priv->ule_sndu_len, h->priv->ule_sndu_type, | |
670 | h->ts_remain, | |
671 | h->ts_remain > 2 ? | |
672 | *(unsigned short *)h->from_where : 0); | |
673 | ||
674 | #ifdef ULE_DEBUG | |
675 | hexdump(iov[0].iov_base, iov[0].iov_len); | |
676 | hexdump(iov[1].iov_base, iov[1].iov_len); | |
677 | hexdump(iov[2].iov_base, iov[2].iov_len); | |
678 | ||
679 | if (h->ule_where == h->ule_hist) { | |
680 | hexdump(&h->ule_hist[98*TS_SZ], TS_SZ); | |
681 | hexdump(&h->ule_hist[99*TS_SZ], TS_SZ); | |
682 | } else if (h->ule_where == &h->ule_hist[TS_SZ]) { | |
683 | hexdump(&h->ule_hist[99*TS_SZ], TS_SZ); | |
684 | hexdump(h->ule_hist, TS_SZ); | |
685 | } else { | |
686 | hexdump(h->ule_where - TS_SZ - TS_SZ, TS_SZ); | |
687 | hexdump(h->ule_where - TS_SZ, TS_SZ); | |
688 | } | |
689 | h->ule_dump = 1; | |
690 | #endif | |
691 | ||
692 | h->dev->stats.rx_errors++; | |
693 | h->dev->stats.rx_crc_errors++; | |
694 | dev_kfree_skb(h->priv->ule_skb); | |
695 | ||
696 | return; | |
697 | } | |
698 | ||
699 | /* CRC32 verified OK. */ | |
700 | ||
701 | /* CRC32 was OK, so remove it from skb. */ | |
702 | h->priv->ule_skb->tail -= 4; | |
703 | h->priv->ule_skb->len -= 4; | |
704 | ||
705 | if (!h->priv->ule_dbit) { | |
706 | if (dvb_net_ule_should_drop(h)) { | |
707 | #ifdef ULE_DEBUG | |
708 | netdev_dbg(h->dev, | |
709 | "Dropping SNDU: MAC destination address does not match: dest addr: %pM, h->dev addr: %pM\n", | |
710 | h->priv->ule_skb->data, h->dev->dev_addr); | |
711 | #endif | |
712 | dev_kfree_skb(h->priv->ule_skb); | |
713 | return; | |
714 | } | |
715 | ||
716 | skb_copy_from_linear_data(h->priv->ule_skb, dest_addr, | |
717 | ETH_ALEN); | |
718 | skb_pull(h->priv->ule_skb, ETH_ALEN); | |
4dd19196 AB |
719 | } else { |
720 | /* dest_addr buffer is only valid if h->priv->ule_dbit == 0 */ | |
721 | eth_zero_addr(dest_addr); | |
8b0041db MCC |
722 | } |
723 | ||
724 | /* Handle ULE Extension Headers. */ | |
725 | if (h->priv->ule_sndu_type < ETH_P_802_3_MIN) { | |
726 | /* There is an extension header. Handle it accordingly. */ | |
727 | int l = handle_ule_extensions(h->priv); | |
728 | ||
729 | if (l < 0) { | |
730 | /* | |
731 | * Mandatory extension header unknown or TEST SNDU. | |
732 | * Drop it. | |
733 | */ | |
734 | ||
735 | // pr_warn("Dropping SNDU, extension headers.\n" ); | |
736 | dev_kfree_skb(h->priv->ule_skb); | |
737 | return; | |
738 | } | |
739 | skb_pull(h->priv->ule_skb, l); | |
740 | } | |
741 | ||
742 | /* | |
743 | * Construct/assure correct ethernet header. | |
744 | * Note: in bridged mode (h->priv->ule_bridged != 0) | |
745 | * we already have the (original) ethernet | |
746 | * header at the start of the payload (after | |
747 | * optional dest. address and any extension | |
748 | * headers). | |
749 | */ | |
750 | if (!h->priv->ule_bridged) { | |
751 | skb_push(h->priv->ule_skb, ETH_HLEN); | |
752 | h->ethh = (struct ethhdr *)h->priv->ule_skb->data; | |
4dd19196 AB |
753 | memcpy(h->ethh->h_dest, dest_addr, ETH_ALEN); |
754 | eth_zero_addr(h->ethh->h_source); | |
8b0041db MCC |
755 | h->ethh->h_proto = htons(h->priv->ule_sndu_type); |
756 | } | |
757 | /* else: skb is in correct state; nothing to do. */ | |
758 | h->priv->ule_bridged = 0; | |
759 | ||
760 | /* Stuff into kernel's protocol stack. */ | |
761 | h->priv->ule_skb->protocol = dvb_net_eth_type_trans(h->priv->ule_skb, | |
762 | h->dev); | |
763 | /* | |
764 | * If D-bit is set (i.e. destination MAC address not present), | |
765 | * receive the packet anyhow. | |
766 | */ | |
767 | #if 0 | |
768 | if (h->priv->ule_dbit && skb->pkt_type == PACKET_OTHERHOST) | |
769 | h->priv->ule_skb->pkt_type = PACKET_HOST; | |
770 | #endif | |
771 | h->dev->stats.rx_packets++; | |
772 | h->dev->stats.rx_bytes += h->priv->ule_skb->len; | |
773 | netif_rx(h->priv->ule_skb); | |
774 | } | |
775 | ||
efb9ab67 MCC |
776 | static void dvb_net_ule(struct net_device *dev, const u8 *buf, size_t buf_len) |
777 | { | |
8b0041db | 778 | int ret; |
efb9ab67 MCC |
779 | struct dvb_net_ule_handle h = { |
780 | .dev = dev, | |
781 | .buf = buf, | |
782 | .buf_len = buf_len, | |
783 | .skipped = 0L, | |
784 | .ts = NULL, | |
785 | .ts_end = NULL, | |
786 | .from_where = NULL, | |
787 | .ts_remain = 0, | |
788 | .how_much = 0, | |
789 | .new_ts = 1, | |
790 | .ethh = NULL, | |
791 | .error = false, | |
792 | #ifdef ULE_DEBUG | |
793 | .ule_where = ule_hist, | |
794 | #endif | |
795 | }; | |
1da177e4 | 796 | |
8b0041db MCC |
797 | /* |
798 | * For all TS cells in current buffer. | |
1da177e4 LT |
799 | * Appearently, we are called for every single TS cell. |
800 | */ | |
8b0041db MCC |
801 | for (h.ts = h.buf, h.ts_end = h.buf + h.buf_len; |
802 | h.ts < h.ts_end; /* no incr. */) { | |
efb9ab67 | 803 | if (h.new_ts) { |
1da177e4 | 804 | /* We are about to process a new TS cell. */ |
8b0041db | 805 | if (dvb_net_ule_new_ts_cell(&h)) |
1da177e4 | 806 | continue; |
1da177e4 | 807 | } |
8b0041db | 808 | |
1da177e4 | 809 | /* Synchronize on PUSI, if required. */ |
efb9ab67 | 810 | if (h.priv->need_pusi) { |
8b0041db | 811 | if (dvb_net_ule_ts_pusi(&h)) |
1da177e4 | 812 | continue; |
1da177e4 LT |
813 | } |
814 | ||
efb9ab67 | 815 | if (h.new_ts) { |
8b0041db | 816 | if (dvb_net_ule_new_ts(&h)) |
1da177e4 | 817 | continue; |
1da177e4 LT |
818 | } |
819 | ||
820 | /* Check if new payload needs to be started. */ | |
efb9ab67 | 821 | if (h.priv->ule_skb == NULL) { |
8b0041db MCC |
822 | ret = dvb_net_ule_new_payload(&h); |
823 | if (ret < 0) | |
1da177e4 | 824 | return; |
8b0041db MCC |
825 | if (ret) |
826 | continue; | |
1da177e4 LT |
827 | } |
828 | ||
829 | /* Copy data into our current skb. */ | |
efb9ab67 | 830 | h.how_much = min(h.priv->ule_sndu_remain, (int)h.ts_remain); |
8b0041db MCC |
831 | memcpy(skb_put(h.priv->ule_skb, h.how_much), |
832 | h.from_where, h.how_much); | |
efb9ab67 MCC |
833 | h.priv->ule_sndu_remain -= h.how_much; |
834 | h.ts_remain -= h.how_much; | |
835 | h.from_where += h.how_much; | |
1da177e4 LT |
836 | |
837 | /* Check for complete payload. */ | |
efb9ab67 | 838 | if (h.priv->ule_sndu_remain <= 0) { |
1da177e4 | 839 | /* Check CRC32, we've got it in our skb already. */ |
efb9ab67 MCC |
840 | __be16 ulen = htons(h.priv->ule_sndu_len); |
841 | __be16 utype = htons(h.priv->ule_sndu_type); | |
27a884dc | 842 | const u8 *tail; |
1da177e4 LT |
843 | struct kvec iov[3] = { |
844 | { &ulen, sizeof ulen }, | |
845 | { &utype, sizeof utype }, | |
8b0041db MCC |
846 | { h.priv->ule_skb->data, |
847 | h.priv->ule_skb->len - 4 } | |
1da177e4 | 848 | }; |
dedcefb0 | 849 | u32 ule_crc = ~0L, expected_crc; |
efb9ab67 | 850 | if (h.priv->ule_dbit) { |
1da177e4 LT |
851 | /* Set D-bit for CRC32 verification, |
852 | * if it was set originally. */ | |
f51b10ef | 853 | ulen |= htons(0x8000); |
1da177e4 LT |
854 | } |
855 | ||
856 | ule_crc = iov_crc32(ule_crc, iov, 3); | |
efb9ab67 | 857 | tail = skb_tail_pointer(h.priv->ule_skb); |
27a884dc ACM |
858 | expected_crc = *(tail - 4) << 24 | |
859 | *(tail - 3) << 16 | | |
860 | *(tail - 2) << 8 | | |
861 | *(tail - 1); | |
1da177e4 | 862 | |
8b0041db | 863 | dvb_net_ule_check_crc(&h, ule_crc, expected_crc); |
1da177e4 | 864 | |
1da177e4 | 865 | /* Prepare for next SNDU. */ |
efb9ab67 | 866 | reset_ule(h.priv); |
1da177e4 LT |
867 | } |
868 | ||
869 | /* More data in current TS (look at the bytes following the CRC32)? */ | |
efb9ab67 | 870 | if (h.ts_remain >= 2 && *((unsigned short *)h.from_where) != 0xFFFF) { |
1da177e4 | 871 | /* Next ULE SNDU starts right there. */ |
efb9ab67 MCC |
872 | h.new_ts = 0; |
873 | h.priv->ule_skb = NULL; | |
874 | h.priv->ule_sndu_type_1 = 0; | |
875 | h.priv->ule_sndu_len = 0; | |
b3ad24d2 | 876 | // pr_warn("More data in current TS: [%#x %#x %#x %#x]\n", |
efb9ab67 MCC |
877 | // *(h.from_where + 0), *(h.from_where + 1), |
878 | // *(h.from_where + 2), *(h.from_where + 3)); | |
879 | // pr_warn("h.ts @ %p, stopped @ %p:\n", h.ts, h.from_where + 0); | |
880 | // hexdump(h.ts, 188); | |
1da177e4 | 881 | } else { |
efb9ab67 MCC |
882 | h.new_ts = 1; |
883 | h.ts += TS_SZ; | |
884 | h.priv->ts_count++; | |
885 | if (h.priv->ule_skb == NULL) { | |
886 | h.priv->need_pusi = 1; | |
887 | h.priv->ule_sndu_type_1 = 0; | |
888 | h.priv->ule_sndu_len = 0; | |
1da177e4 LT |
889 | } |
890 | } | |
891 | } /* for all available TS cells */ | |
892 | } | |
893 | ||
894 | static int dvb_net_ts_callback(const u8 *buffer1, size_t buffer1_len, | |
895 | const u8 *buffer2, size_t buffer2_len, | |
2f684b23 | 896 | struct dmx_ts_feed *feed) |
1da177e4 | 897 | { |
0c53c70f | 898 | struct net_device *dev = feed->priv; |
1da177e4 | 899 | |
5fa1247a | 900 | if (buffer2) |
b3ad24d2 | 901 | pr_warn("buffer2 not NULL: %p.\n", buffer2); |
1da177e4 | 902 | if (buffer1_len > 32768) |
b3ad24d2 MCC |
903 | pr_warn("length > 32k: %zu.\n", buffer1_len); |
904 | /* pr_info("TS callback: %u bytes, %u TS cells @ %p.\n", | |
afd1a0c9 | 905 | buffer1_len, buffer1_len / TS_SZ, buffer1); */ |
1da177e4 LT |
906 | dvb_net_ule(dev, buffer1, buffer1_len); |
907 | return 0; | |
908 | } | |
909 | ||
910 | ||
71be258b MK |
911 | static void dvb_net_sec(struct net_device *dev, |
912 | const u8 *pkt, int pkt_len) | |
1da177e4 | 913 | { |
afd1a0c9 MCC |
914 | u8 *eth; |
915 | struct sk_buff *skb; | |
fb875333 | 916 | struct net_device_stats *stats = &dev->stats; |
59142330 | 917 | int snap = 0; |
1da177e4 LT |
918 | |
919 | /* note: pkt_len includes a 32bit checksum */ | |
920 | if (pkt_len < 16) { | |
b3ad24d2 | 921 | pr_warn("%s: IP/MPE packet length = %d too small.\n", |
1da177e4 LT |
922 | dev->name, pkt_len); |
923 | stats->rx_errors++; | |
924 | stats->rx_length_errors++; | |
925 | return; | |
926 | } | |
927 | /* it seems some ISPs manage to screw up here, so we have to | |
928 | * relax the error checks... */ | |
929 | #if 0 | |
930 | if ((pkt[5] & 0xfd) != 0xc1) { | |
931 | /* drop scrambled or broken packets */ | |
932 | #else | |
933 | if ((pkt[5] & 0x3c) != 0x00) { | |
934 | /* drop scrambled */ | |
935 | #endif | |
936 | stats->rx_errors++; | |
937 | stats->rx_crc_errors++; | |
938 | return; | |
939 | } | |
940 | if (pkt[5] & 0x02) { | |
59142330 JS |
941 | /* handle LLC/SNAP, see rfc-1042 */ |
942 | if (pkt_len < 24 || memcmp(&pkt[12], "\xaa\xaa\x03\0\0\0", 6)) { | |
943 | stats->rx_dropped++; | |
944 | return; | |
945 | } | |
946 | snap = 8; | |
afd1a0c9 | 947 | } |
1da177e4 LT |
948 | if (pkt[7]) { |
949 | /* FIXME: assemble datagram from multiple sections */ | |
950 | stats->rx_errors++; | |
951 | stats->rx_frame_errors++; | |
952 | return; | |
953 | } | |
954 | ||
955 | /* we have 14 byte ethernet header (ip header follows); | |
59142330 | 956 | * 12 byte MPE header; 4 byte checksum; + 2 byte alignment, 8 byte LLC/SNAP |
1da177e4 | 957 | */ |
59142330 | 958 | if (!(skb = dev_alloc_skb(pkt_len - 4 - 12 + 14 + 2 - snap))) { |
b3ad24d2 | 959 | //pr_notice("%s: Memory squeeze, dropping packet.\n", dev->name); |
1da177e4 LT |
960 | stats->rx_dropped++; |
961 | return; | |
962 | } | |
963 | skb_reserve(skb, 2); /* longword align L3 header */ | |
964 | skb->dev = dev; | |
965 | ||
966 | /* copy L3 payload */ | |
59142330 JS |
967 | eth = (u8 *) skb_put(skb, pkt_len - 12 - 4 + 14 - snap); |
968 | memcpy(eth + 14, pkt + 12 + snap, pkt_len - 12 - 4 - snap); | |
1da177e4 LT |
969 | |
970 | /* create ethernet header: */ | |
afd1a0c9 MCC |
971 | eth[0]=pkt[0x0b]; |
972 | eth[1]=pkt[0x0a]; | |
973 | eth[2]=pkt[0x09]; | |
974 | eth[3]=pkt[0x08]; | |
975 | eth[4]=pkt[0x04]; | |
976 | eth[5]=pkt[0x03]; | |
1da177e4 | 977 | |
afd1a0c9 | 978 | eth[6]=eth[7]=eth[8]=eth[9]=eth[10]=eth[11]=0; |
1da177e4 | 979 | |
59142330 JS |
980 | if (snap) { |
981 | eth[12] = pkt[18]; | |
982 | eth[13] = pkt[19]; | |
983 | } else { | |
984 | /* protocol numbers are from rfc-1700 or | |
985 | * http://www.iana.org/assignments/ethernet-numbers | |
986 | */ | |
987 | if (pkt[12] >> 4 == 6) { /* version field from IP header */ | |
988 | eth[12] = 0x86; /* IPv6 */ | |
989 | eth[13] = 0xdd; | |
990 | } else { | |
991 | eth[12] = 0x08; /* IPv4 */ | |
992 | eth[13] = 0x00; | |
993 | } | |
994 | } | |
1da177e4 LT |
995 | |
996 | skb->protocol = dvb_net_eth_type_trans(skb, dev); | |
997 | ||
998 | stats->rx_packets++; | |
999 | stats->rx_bytes+=skb->len; | |
afd1a0c9 | 1000 | netif_rx(skb); |
1da177e4 LT |
1001 | } |
1002 | ||
1003 | static int dvb_net_sec_callback(const u8 *buffer1, size_t buffer1_len, | |
1004 | const u8 *buffer2, size_t buffer2_len, | |
2f684b23 | 1005 | struct dmx_section_filter *filter) |
1da177e4 | 1006 | { |
afd1a0c9 | 1007 | struct net_device *dev = filter->priv; |
1da177e4 LT |
1008 | |
1009 | /** | |
1010 | * we rely on the DVB API definition where exactly one complete | |
1011 | * section is delivered in buffer1 | |
1012 | */ | |
04b35abe | 1013 | dvb_net_sec (dev, buffer1, buffer1_len); |
1da177e4 LT |
1014 | return 0; |
1015 | } | |
1016 | ||
1017 | static int dvb_net_tx(struct sk_buff *skb, struct net_device *dev) | |
1018 | { | |
1019 | dev_kfree_skb(skb); | |
6ed10654 | 1020 | return NETDEV_TX_OK; |
1da177e4 LT |
1021 | } |
1022 | ||
1023 | static u8 mask_normal[6]={0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; | |
1024 | static u8 mask_allmulti[6]={0xff, 0xff, 0xff, 0x00, 0x00, 0x00}; | |
1025 | static u8 mac_allmulti[6]={0x01, 0x00, 0x5e, 0x00, 0x00, 0x00}; | |
1026 | static u8 mask_promisc[6]={0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; | |
1027 | ||
1028 | static int dvb_net_filter_sec_set(struct net_device *dev, | |
1029 | struct dmx_section_filter **secfilter, | |
1030 | u8 *mac, u8 *mac_mask) | |
1031 | { | |
0eade1f9 | 1032 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1033 | int ret; |
1034 | ||
1035 | *secfilter=NULL; | |
1036 | ret = priv->secfeed->allocate_filter(priv->secfeed, secfilter); | |
1037 | if (ret<0) { | |
b3ad24d2 | 1038 | pr_err("%s: could not get filter\n", dev->name); |
1da177e4 LT |
1039 | return ret; |
1040 | } | |
1041 | ||
1042 | (*secfilter)->priv=(void *) dev; | |
1043 | ||
1044 | memset((*secfilter)->filter_value, 0x00, DMX_MAX_FILTER_SIZE); | |
1045 | memset((*secfilter)->filter_mask, 0x00, DMX_MAX_FILTER_SIZE); | |
1046 | memset((*secfilter)->filter_mode, 0xff, DMX_MAX_FILTER_SIZE); | |
1047 | ||
1048 | (*secfilter)->filter_value[0]=0x3e; | |
1049 | (*secfilter)->filter_value[3]=mac[5]; | |
1050 | (*secfilter)->filter_value[4]=mac[4]; | |
1051 | (*secfilter)->filter_value[8]=mac[3]; | |
1052 | (*secfilter)->filter_value[9]=mac[2]; | |
1053 | (*secfilter)->filter_value[10]=mac[1]; | |
1054 | (*secfilter)->filter_value[11]=mac[0]; | |
1055 | ||
1056 | (*secfilter)->filter_mask[0] = 0xff; | |
1057 | (*secfilter)->filter_mask[3] = mac_mask[5]; | |
1058 | (*secfilter)->filter_mask[4] = mac_mask[4]; | |
1059 | (*secfilter)->filter_mask[8] = mac_mask[3]; | |
1060 | (*secfilter)->filter_mask[9] = mac_mask[2]; | |
1061 | (*secfilter)->filter_mask[10] = mac_mask[1]; | |
1062 | (*secfilter)->filter_mask[11]=mac_mask[0]; | |
1063 | ||
5c7c0ca0 | 1064 | netdev_dbg(dev, "filter mac=%pM mask=%pM\n", mac, mac_mask); |
1da177e4 LT |
1065 | |
1066 | return 0; | |
1067 | } | |
1068 | ||
1069 | static int dvb_net_feed_start(struct net_device *dev) | |
1070 | { | |
1130ca45 | 1071 | int ret = 0, i; |
0eade1f9 | 1072 | struct dvb_net_priv *priv = netdev_priv(dev); |
afd1a0c9 MCC |
1073 | struct dmx_demux *demux = priv->demux; |
1074 | unsigned char *mac = (unsigned char *) dev->dev_addr; | |
1da177e4 | 1075 | |
5c7c0ca0 | 1076 | netdev_dbg(dev, "rx_mode %i\n", priv->rx_mode); |
3593cab5 | 1077 | mutex_lock(&priv->mutex); |
1da177e4 | 1078 | if (priv->tsfeed || priv->secfeed || priv->secfilter || priv->multi_secfilter[0]) |
b3ad24d2 | 1079 | pr_err("%s: BUG %d\n", __func__, __LINE__); |
1da177e4 LT |
1080 | |
1081 | priv->secfeed=NULL; | |
1082 | priv->secfilter=NULL; | |
1083 | priv->tsfeed = NULL; | |
1084 | ||
1085 | if (priv->feedtype == DVB_NET_FEEDTYPE_MPE) { | |
5c7c0ca0 | 1086 | netdev_dbg(dev, "alloc secfeed\n"); |
1da177e4 LT |
1087 | ret=demux->allocate_section_feed(demux, &priv->secfeed, |
1088 | dvb_net_sec_callback); | |
1089 | if (ret<0) { | |
b3ad24d2 MCC |
1090 | pr_err("%s: could not allocate section feed\n", |
1091 | dev->name); | |
1130ca45 | 1092 | goto error; |
1da177e4 LT |
1093 | } |
1094 | ||
dd79d27e | 1095 | ret = priv->secfeed->set(priv->secfeed, priv->pid, 1); |
1da177e4 LT |
1096 | |
1097 | if (ret<0) { | |
b3ad24d2 | 1098 | pr_err("%s: could not set section feed\n", dev->name); |
1da177e4 LT |
1099 | priv->demux->release_section_feed(priv->demux, priv->secfeed); |
1100 | priv->secfeed=NULL; | |
1130ca45 | 1101 | goto error; |
1da177e4 LT |
1102 | } |
1103 | ||
1104 | if (priv->rx_mode != RX_MODE_PROMISC) { | |
5c7c0ca0 | 1105 | netdev_dbg(dev, "set secfilter\n"); |
1da177e4 LT |
1106 | dvb_net_filter_sec_set(dev, &priv->secfilter, mac, mask_normal); |
1107 | } | |
1108 | ||
1109 | switch (priv->rx_mode) { | |
1110 | case RX_MODE_MULTI: | |
1111 | for (i = 0; i < priv->multi_num; i++) { | |
5c7c0ca0 | 1112 | netdev_dbg(dev, "set multi_secfilter[%d]\n", i); |
1da177e4 LT |
1113 | dvb_net_filter_sec_set(dev, &priv->multi_secfilter[i], |
1114 | priv->multi_macs[i], mask_normal); | |
1115 | } | |
1116 | break; | |
1117 | case RX_MODE_ALL_MULTI: | |
1118 | priv->multi_num=1; | |
5c7c0ca0 | 1119 | netdev_dbg(dev, "set multi_secfilter[0]\n"); |
1da177e4 LT |
1120 | dvb_net_filter_sec_set(dev, &priv->multi_secfilter[0], |
1121 | mac_allmulti, mask_allmulti); | |
1122 | break; | |
1123 | case RX_MODE_PROMISC: | |
1124 | priv->multi_num=0; | |
5c7c0ca0 | 1125 | netdev_dbg(dev, "set secfilter\n"); |
1da177e4 LT |
1126 | dvb_net_filter_sec_set(dev, &priv->secfilter, mac, mask_promisc); |
1127 | break; | |
1128 | } | |
1129 | ||
5c7c0ca0 | 1130 | netdev_dbg(dev, "start filtering\n"); |
1da177e4 LT |
1131 | priv->secfeed->start_filtering(priv->secfeed); |
1132 | } else if (priv->feedtype == DVB_NET_FEEDTYPE_ULE) { | |
e95be158 | 1133 | ktime_t timeout = ns_to_ktime(10 * NSEC_PER_MSEC); |
1da177e4 LT |
1134 | |
1135 | /* we have payloads encapsulated in TS */ | |
5c7c0ca0 | 1136 | netdev_dbg(dev, "alloc tsfeed\n"); |
1da177e4 LT |
1137 | ret = demux->allocate_ts_feed(demux, &priv->tsfeed, dvb_net_ts_callback); |
1138 | if (ret < 0) { | |
b3ad24d2 | 1139 | pr_err("%s: could not allocate ts feed\n", dev->name); |
1130ca45 | 1140 | goto error; |
1da177e4 LT |
1141 | } |
1142 | ||
1143 | /* Set netdevice pointer for ts decaps callback. */ | |
1144 | priv->tsfeed->priv = (void *)dev; | |
18232ca6 CP |
1145 | ret = priv->tsfeed->set(priv->tsfeed, |
1146 | priv->pid, /* pid */ | |
1147 | TS_PACKET, /* type */ | |
fde04ab9 | 1148 | DMX_PES_OTHER, /* pes type */ |
18232ca6 CP |
1149 | timeout /* timeout */ |
1150 | ); | |
1da177e4 LT |
1151 | |
1152 | if (ret < 0) { | |
b3ad24d2 | 1153 | pr_err("%s: could not set ts feed\n", dev->name); |
1da177e4 LT |
1154 | priv->demux->release_ts_feed(priv->demux, priv->tsfeed); |
1155 | priv->tsfeed = NULL; | |
1130ca45 | 1156 | goto error; |
1da177e4 LT |
1157 | } |
1158 | ||
5c7c0ca0 | 1159 | netdev_dbg(dev, "start filtering\n"); |
1da177e4 LT |
1160 | priv->tsfeed->start_filtering(priv->tsfeed); |
1161 | } else | |
1130ca45 | 1162 | ret = -EINVAL; |
1da177e4 | 1163 | |
1130ca45 | 1164 | error: |
3593cab5 | 1165 | mutex_unlock(&priv->mutex); |
1130ca45 | 1166 | return ret; |
1da177e4 LT |
1167 | } |
1168 | ||
1169 | static int dvb_net_feed_stop(struct net_device *dev) | |
1170 | { | |
0eade1f9 | 1171 | struct dvb_net_priv *priv = netdev_priv(dev); |
1130ca45 | 1172 | int i, ret = 0; |
1da177e4 | 1173 | |
3593cab5 | 1174 | mutex_lock(&priv->mutex); |
1da177e4 LT |
1175 | if (priv->feedtype == DVB_NET_FEEDTYPE_MPE) { |
1176 | if (priv->secfeed) { | |
1177 | if (priv->secfeed->is_filtering) { | |
5c7c0ca0 | 1178 | netdev_dbg(dev, "stop secfeed\n"); |
1da177e4 LT |
1179 | priv->secfeed->stop_filtering(priv->secfeed); |
1180 | } | |
1181 | ||
1182 | if (priv->secfilter) { | |
5c7c0ca0 | 1183 | netdev_dbg(dev, "release secfilter\n"); |
1da177e4 LT |
1184 | priv->secfeed->release_filter(priv->secfeed, |
1185 | priv->secfilter); | |
1186 | priv->secfilter=NULL; | |
1187 | } | |
1188 | ||
1189 | for (i=0; i<priv->multi_num; i++) { | |
1190 | if (priv->multi_secfilter[i]) { | |
5c7c0ca0 JP |
1191 | netdev_dbg(dev, "release multi_filter[%d]\n", |
1192 | i); | |
1da177e4 LT |
1193 | priv->secfeed->release_filter(priv->secfeed, |
1194 | priv->multi_secfilter[i]); | |
1195 | priv->multi_secfilter[i] = NULL; | |
1196 | } | |
1197 | } | |
1198 | ||
1199 | priv->demux->release_section_feed(priv->demux, priv->secfeed); | |
1200 | priv->secfeed = NULL; | |
1201 | } else | |
b3ad24d2 | 1202 | pr_err("%s: no feed to stop\n", dev->name); |
1da177e4 LT |
1203 | } else if (priv->feedtype == DVB_NET_FEEDTYPE_ULE) { |
1204 | if (priv->tsfeed) { | |
1205 | if (priv->tsfeed->is_filtering) { | |
5c7c0ca0 | 1206 | netdev_dbg(dev, "stop tsfeed\n"); |
1da177e4 LT |
1207 | priv->tsfeed->stop_filtering(priv->tsfeed); |
1208 | } | |
1209 | priv->demux->release_ts_feed(priv->demux, priv->tsfeed); | |
1210 | priv->tsfeed = NULL; | |
1211 | } | |
1212 | else | |
b3ad24d2 | 1213 | pr_err("%s: no ts feed to stop\n", dev->name); |
1da177e4 | 1214 | } else |
1130ca45 | 1215 | ret = -EINVAL; |
3593cab5 | 1216 | mutex_unlock(&priv->mutex); |
1130ca45 | 1217 | return ret; |
1da177e4 LT |
1218 | } |
1219 | ||
1220 | ||
22bedad3 | 1221 | static int dvb_set_mc_filter(struct net_device *dev, unsigned char *addr) |
1da177e4 | 1222 | { |
0eade1f9 | 1223 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1224 | |
1225 | if (priv->multi_num == DVB_NET_MULTICAST_MAX) | |
1226 | return -ENOMEM; | |
1227 | ||
22bedad3 | 1228 | memcpy(priv->multi_macs[priv->multi_num], addr, ETH_ALEN); |
1da177e4 LT |
1229 | |
1230 | priv->multi_num++; | |
1231 | return 0; | |
1232 | } | |
1233 | ||
1234 | ||
c4028958 | 1235 | static void wq_set_multicast_list (struct work_struct *work) |
1da177e4 | 1236 | { |
c4028958 DH |
1237 | struct dvb_net_priv *priv = |
1238 | container_of(work, struct dvb_net_priv, set_multicast_list_wq); | |
1239 | struct net_device *dev = priv->net; | |
1da177e4 LT |
1240 | |
1241 | dvb_net_feed_stop(dev); | |
1da177e4 | 1242 | priv->rx_mode = RX_MODE_UNI; |
b9e40857 | 1243 | netif_addr_lock_bh(dev); |
1da177e4 LT |
1244 | |
1245 | if (dev->flags & IFF_PROMISC) { | |
5c7c0ca0 | 1246 | netdev_dbg(dev, "promiscuous mode\n"); |
1da177e4 LT |
1247 | priv->rx_mode = RX_MODE_PROMISC; |
1248 | } else if ((dev->flags & IFF_ALLMULTI)) { | |
5c7c0ca0 | 1249 | netdev_dbg(dev, "allmulti mode\n"); |
1da177e4 | 1250 | priv->rx_mode = RX_MODE_ALL_MULTI; |
4cd24eaf | 1251 | } else if (!netdev_mc_empty(dev)) { |
22bedad3 | 1252 | struct netdev_hw_addr *ha; |
1da177e4 | 1253 | |
5c7c0ca0 JP |
1254 | netdev_dbg(dev, "set_mc_list, %d entries\n", |
1255 | netdev_mc_count(dev)); | |
1da177e4 LT |
1256 | |
1257 | priv->rx_mode = RX_MODE_MULTI; | |
1258 | priv->multi_num = 0; | |
1259 | ||
22bedad3 JP |
1260 | netdev_for_each_mc_addr(ha, dev) |
1261 | dvb_set_mc_filter(dev, ha->addr); | |
1da177e4 LT |
1262 | } |
1263 | ||
b9e40857 | 1264 | netif_addr_unlock_bh(dev); |
1da177e4 LT |
1265 | dvb_net_feed_start(dev); |
1266 | } | |
1267 | ||
1268 | ||
1269 | static void dvb_net_set_multicast_list (struct net_device *dev) | |
1270 | { | |
0eade1f9 | 1271 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1272 | schedule_work(&priv->set_multicast_list_wq); |
1273 | } | |
1274 | ||
1275 | ||
c4028958 | 1276 | static void wq_restart_net_feed (struct work_struct *work) |
1da177e4 | 1277 | { |
c4028958 DH |
1278 | struct dvb_net_priv *priv = |
1279 | container_of(work, struct dvb_net_priv, restart_net_feed_wq); | |
1280 | struct net_device *dev = priv->net; | |
1da177e4 LT |
1281 | |
1282 | if (netif_running(dev)) { | |
1283 | dvb_net_feed_stop(dev); | |
1284 | dvb_net_feed_start(dev); | |
1285 | } | |
1286 | } | |
1287 | ||
1288 | ||
1289 | static int dvb_net_set_mac (struct net_device *dev, void *p) | |
1290 | { | |
0eade1f9 | 1291 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1292 | struct sockaddr *addr=p; |
1293 | ||
1294 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | |
1295 | ||
1296 | if (netif_running(dev)) | |
1297 | schedule_work(&priv->restart_net_feed_wq); | |
1298 | ||
1299 | return 0; | |
1300 | } | |
1301 | ||
1302 | ||
1303 | static int dvb_net_open(struct net_device *dev) | |
1304 | { | |
0eade1f9 | 1305 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1306 | |
1307 | priv->in_use++; | |
1308 | dvb_net_feed_start(dev); | |
1309 | return 0; | |
1310 | } | |
1311 | ||
1312 | ||
1313 | static int dvb_net_stop(struct net_device *dev) | |
1314 | { | |
0eade1f9 | 1315 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1316 | |
1317 | priv->in_use--; | |
afd1a0c9 | 1318 | return dvb_net_feed_stop(dev); |
1da177e4 LT |
1319 | } |
1320 | ||
3b04ddde SH |
1321 | static const struct header_ops dvb_header_ops = { |
1322 | .create = eth_header, | |
1323 | .parse = eth_header_parse, | |
3b04ddde SH |
1324 | }; |
1325 | ||
fb875333 SH |
1326 | |
1327 | static const struct net_device_ops dvb_netdev_ops = { | |
1328 | .ndo_open = dvb_net_open, | |
1329 | .ndo_stop = dvb_net_stop, | |
1330 | .ndo_start_xmit = dvb_net_tx, | |
afc4b13d | 1331 | .ndo_set_rx_mode = dvb_net_set_multicast_list, |
fb875333 | 1332 | .ndo_set_mac_address = dvb_net_set_mac, |
fb875333 SH |
1333 | .ndo_validate_addr = eth_validate_addr, |
1334 | }; | |
1335 | ||
1da177e4 LT |
1336 | static void dvb_net_setup(struct net_device *dev) |
1337 | { | |
1338 | ether_setup(dev); | |
1339 | ||
3b04ddde | 1340 | dev->header_ops = &dvb_header_ops; |
fb875333 | 1341 | dev->netdev_ops = &dvb_netdev_ops; |
1da177e4 | 1342 | dev->mtu = 4096; |
a52ad514 | 1343 | dev->max_mtu = 4096; |
3b04ddde | 1344 | |
1da177e4 LT |
1345 | dev->flags |= IFF_NOARP; |
1346 | } | |
1347 | ||
1348 | static int get_if(struct dvb_net *dvbnet) | |
1349 | { | |
1350 | int i; | |
1351 | ||
1352 | for (i=0; i<DVB_NET_DEVICES_MAX; i++) | |
1353 | if (!dvbnet->state[i]) | |
1354 | break; | |
1355 | ||
1356 | if (i == DVB_NET_DEVICES_MAX) | |
1357 | return -1; | |
1358 | ||
1359 | dvbnet->state[i]=1; | |
1360 | return i; | |
1361 | } | |
1362 | ||
1363 | static int dvb_net_add_if(struct dvb_net *dvbnet, u16 pid, u8 feedtype) | |
1364 | { | |
1365 | struct net_device *net; | |
1366 | struct dvb_net_priv *priv; | |
1367 | int result; | |
1368 | int if_num; | |
1369 | ||
1370 | if (feedtype != DVB_NET_FEEDTYPE_MPE && feedtype != DVB_NET_FEEDTYPE_ULE) | |
1371 | return -EINVAL; | |
1372 | if ((if_num = get_if(dvbnet)) < 0) | |
1373 | return -EINVAL; | |
1374 | ||
c835a677 TG |
1375 | net = alloc_netdev(sizeof(struct dvb_net_priv), "dvb", |
1376 | NET_NAME_UNKNOWN, dvb_net_setup); | |
1da177e4 LT |
1377 | if (!net) |
1378 | return -ENOMEM; | |
1379 | ||
1380 | if (dvbnet->dvbdev->id) | |
1381 | snprintf(net->name, IFNAMSIZ, "dvb%d%u%d", | |
1382 | dvbnet->dvbdev->adapter->num, dvbnet->dvbdev->id, if_num); | |
1383 | else | |
1384 | /* compatibility fix to keep dvb0_0 format */ | |
1385 | snprintf(net->name, IFNAMSIZ, "dvb%d_%d", | |
1386 | dvbnet->dvbdev->adapter->num, if_num); | |
1387 | ||
1388 | net->addr_len = 6; | |
1389 | memcpy(net->dev_addr, dvbnet->dvbdev->adapter->proposed_mac, 6); | |
1390 | ||
1391 | dvbnet->device[if_num] = net; | |
1392 | ||
0eade1f9 | 1393 | priv = netdev_priv(net); |
c4028958 | 1394 | priv->net = net; |
1da177e4 LT |
1395 | priv->demux = dvbnet->demux; |
1396 | priv->pid = pid; | |
1397 | priv->rx_mode = RX_MODE_UNI; | |
1398 | priv->need_pusi = 1; | |
1399 | priv->tscc = 0; | |
1400 | priv->feedtype = feedtype; | |
1401 | reset_ule(priv); | |
1402 | ||
c4028958 DH |
1403 | INIT_WORK(&priv->set_multicast_list_wq, wq_set_multicast_list); |
1404 | INIT_WORK(&priv->restart_net_feed_wq, wq_restart_net_feed); | |
3593cab5 | 1405 | mutex_init(&priv->mutex); |
1da177e4 LT |
1406 | |
1407 | net->base_addr = pid; | |
1408 | ||
1409 | if ((result = register_netdev(net)) < 0) { | |
1410 | dvbnet->device[if_num] = NULL; | |
1411 | free_netdev(net); | |
1412 | return result; | |
1413 | } | |
b3ad24d2 | 1414 | pr_info("created network interface %s\n", net->name); |
1da177e4 LT |
1415 | |
1416 | return if_num; | |
1417 | } | |
1418 | ||
400b7083 | 1419 | static int dvb_net_remove_if(struct dvb_net *dvbnet, unsigned long num) |
1da177e4 LT |
1420 | { |
1421 | struct net_device *net = dvbnet->device[num]; | |
1422 | struct dvb_net_priv *priv; | |
1423 | ||
1424 | if (!dvbnet->state[num]) | |
1425 | return -EINVAL; | |
0eade1f9 | 1426 | priv = netdev_priv(net); |
1da177e4 LT |
1427 | if (priv->in_use) |
1428 | return -EBUSY; | |
1429 | ||
1430 | dvb_net_stop(net); | |
43829731 TH |
1431 | flush_work(&priv->set_multicast_list_wq); |
1432 | flush_work(&priv->restart_net_feed_wq); | |
b3ad24d2 | 1433 | pr_info("removed network interface %s\n", net->name); |
1da177e4 LT |
1434 | unregister_netdev(net); |
1435 | dvbnet->state[num]=0; | |
1436 | dvbnet->device[num] = NULL; | |
1437 | free_netdev(net); | |
1438 | ||
1439 | return 0; | |
1440 | } | |
1441 | ||
16ef8def | 1442 | static int dvb_net_do_ioctl(struct file *file, |
1da177e4 LT |
1443 | unsigned int cmd, void *parg) |
1444 | { | |
0c53c70f JS |
1445 | struct dvb_device *dvbdev = file->private_data; |
1446 | struct dvb_net *dvbnet = dvbdev->priv; | |
30ad64b8 | 1447 | int ret = 0; |
1da177e4 LT |
1448 | |
1449 | if (((file->f_flags&O_ACCMODE)==O_RDONLY)) | |
1450 | return -EPERM; | |
1451 | ||
30ad64b8 NS |
1452 | if (mutex_lock_interruptible(&dvbnet->ioctl_mutex)) |
1453 | return -ERESTARTSYS; | |
1454 | ||
1da177e4 LT |
1455 | switch (cmd) { |
1456 | case NET_ADD_IF: | |
1457 | { | |
0c53c70f | 1458 | struct dvb_net_if *dvbnetif = parg; |
1da177e4 LT |
1459 | int result; |
1460 | ||
30ad64b8 NS |
1461 | if (!capable(CAP_SYS_ADMIN)) { |
1462 | ret = -EPERM; | |
1463 | goto ioctl_error; | |
1464 | } | |
1da177e4 | 1465 | |
30ad64b8 NS |
1466 | if (!try_module_get(dvbdev->adapter->module)) { |
1467 | ret = -EPERM; | |
1468 | goto ioctl_error; | |
1469 | } | |
1da177e4 LT |
1470 | |
1471 | result=dvb_net_add_if(dvbnet, dvbnetif->pid, dvbnetif->feedtype); | |
1472 | if (result<0) { | |
1473 | module_put(dvbdev->adapter->module); | |
30ad64b8 NS |
1474 | ret = result; |
1475 | goto ioctl_error; | |
1da177e4 LT |
1476 | } |
1477 | dvbnetif->if_num=result; | |
1478 | break; | |
1479 | } | |
1480 | case NET_GET_IF: | |
1481 | { | |
1482 | struct net_device *netdev; | |
1483 | struct dvb_net_priv *priv_data; | |
0c53c70f | 1484 | struct dvb_net_if *dvbnetif = parg; |
1da177e4 LT |
1485 | |
1486 | if (dvbnetif->if_num >= DVB_NET_DEVICES_MAX || | |
30ad64b8 NS |
1487 | !dvbnet->state[dvbnetif->if_num]) { |
1488 | ret = -EINVAL; | |
1489 | goto ioctl_error; | |
1490 | } | |
1da177e4 LT |
1491 | |
1492 | netdev = dvbnet->device[dvbnetif->if_num]; | |
1493 | ||
0eade1f9 | 1494 | priv_data = netdev_priv(netdev); |
1da177e4 LT |
1495 | dvbnetif->pid=priv_data->pid; |
1496 | dvbnetif->feedtype=priv_data->feedtype; | |
1497 | break; | |
1498 | } | |
1499 | case NET_REMOVE_IF: | |
1500 | { | |
30ad64b8 NS |
1501 | if (!capable(CAP_SYS_ADMIN)) { |
1502 | ret = -EPERM; | |
1503 | goto ioctl_error; | |
1504 | } | |
1505 | if ((unsigned long) parg >= DVB_NET_DEVICES_MAX) { | |
1506 | ret = -EINVAL; | |
1507 | goto ioctl_error; | |
1508 | } | |
e18828e4 | 1509 | ret = dvb_net_remove_if(dvbnet, (unsigned long) parg); |
1da177e4 LT |
1510 | if (!ret) |
1511 | module_put(dvbdev->adapter->module); | |
30ad64b8 | 1512 | break; |
1da177e4 LT |
1513 | } |
1514 | ||
06fe9fb4 | 1515 | /* binary compatibility cruft */ |
1da177e4 LT |
1516 | case __NET_ADD_IF_OLD: |
1517 | { | |
0c53c70f | 1518 | struct __dvb_net_if_old *dvbnetif = parg; |
1da177e4 LT |
1519 | int result; |
1520 | ||
30ad64b8 NS |
1521 | if (!capable(CAP_SYS_ADMIN)) { |
1522 | ret = -EPERM; | |
1523 | goto ioctl_error; | |
1524 | } | |
1da177e4 | 1525 | |
30ad64b8 NS |
1526 | if (!try_module_get(dvbdev->adapter->module)) { |
1527 | ret = -EPERM; | |
1528 | goto ioctl_error; | |
1529 | } | |
1da177e4 LT |
1530 | |
1531 | result=dvb_net_add_if(dvbnet, dvbnetif->pid, DVB_NET_FEEDTYPE_MPE); | |
1532 | if (result<0) { | |
1533 | module_put(dvbdev->adapter->module); | |
30ad64b8 NS |
1534 | ret = result; |
1535 | goto ioctl_error; | |
1da177e4 LT |
1536 | } |
1537 | dvbnetif->if_num=result; | |
1538 | break; | |
1539 | } | |
1540 | case __NET_GET_IF_OLD: | |
1541 | { | |
1542 | struct net_device *netdev; | |
1543 | struct dvb_net_priv *priv_data; | |
0c53c70f | 1544 | struct __dvb_net_if_old *dvbnetif = parg; |
1da177e4 LT |
1545 | |
1546 | if (dvbnetif->if_num >= DVB_NET_DEVICES_MAX || | |
30ad64b8 NS |
1547 | !dvbnet->state[dvbnetif->if_num]) { |
1548 | ret = -EINVAL; | |
1549 | goto ioctl_error; | |
1550 | } | |
1da177e4 LT |
1551 | |
1552 | netdev = dvbnet->device[dvbnetif->if_num]; | |
1553 | ||
0eade1f9 | 1554 | priv_data = netdev_priv(netdev); |
1da177e4 LT |
1555 | dvbnetif->pid=priv_data->pid; |
1556 | break; | |
1557 | } | |
1558 | default: | |
30ad64b8 NS |
1559 | ret = -ENOTTY; |
1560 | break; | |
1da177e4 | 1561 | } |
30ad64b8 NS |
1562 | |
1563 | ioctl_error: | |
1564 | mutex_unlock(&dvbnet->ioctl_mutex); | |
1565 | return ret; | |
1da177e4 LT |
1566 | } |
1567 | ||
16ef8def | 1568 | static long dvb_net_ioctl(struct file *file, |
1da177e4 LT |
1569 | unsigned int cmd, unsigned long arg) |
1570 | { | |
72024f1e | 1571 | return dvb_usercopy(file, cmd, arg, dvb_net_do_ioctl); |
1da177e4 LT |
1572 | } |
1573 | ||
2c4d3364 MR |
1574 | static int dvb_net_close(struct inode *inode, struct file *file) |
1575 | { | |
1576 | struct dvb_device *dvbdev = file->private_data; | |
1577 | struct dvb_net *dvbnet = dvbdev->priv; | |
1578 | ||
82e67246 | 1579 | dvb_generic_release(inode, file); |
2c4d3364 | 1580 | |
7caf2184 | 1581 | if(dvbdev->users == 1 && dvbnet->exit == 1) |
2c4d3364 | 1582 | wake_up(&dvbdev->wait_queue); |
2c4d3364 MR |
1583 | return 0; |
1584 | } | |
1585 | ||
1586 | ||
784e29d2 | 1587 | static const struct file_operations dvb_net_fops = { |
1da177e4 | 1588 | .owner = THIS_MODULE, |
16ef8def | 1589 | .unlocked_ioctl = dvb_net_ioctl, |
1da177e4 | 1590 | .open = dvb_generic_open, |
2c4d3364 | 1591 | .release = dvb_net_close, |
6038f373 | 1592 | .llseek = noop_llseek, |
1da177e4 LT |
1593 | }; |
1594 | ||
e3d65c33 | 1595 | static const struct dvb_device dvbdev_net = { |
afd1a0c9 MCC |
1596 | .priv = NULL, |
1597 | .users = 1, | |
1598 | .writers = 1, | |
e3d65c33 | 1599 | #if defined(CONFIG_MEDIA_CONTROLLER_DVB) |
e4fd3bc5 | 1600 | .name = "dvb-net", |
e3d65c33 | 1601 | #endif |
afd1a0c9 | 1602 | .fops = &dvb_net_fops, |
1da177e4 LT |
1603 | }; |
1604 | ||
1da177e4 LT |
1605 | void dvb_net_release (struct dvb_net *dvbnet) |
1606 | { | |
1607 | int i; | |
1608 | ||
2c4d3364 MR |
1609 | dvbnet->exit = 1; |
1610 | if (dvbnet->dvbdev->users < 1) | |
1611 | wait_event(dvbnet->dvbdev->wait_queue, | |
1612 | dvbnet->dvbdev->users==1); | |
1613 | ||
1da177e4 LT |
1614 | dvb_unregister_device(dvbnet->dvbdev); |
1615 | ||
1616 | for (i=0; i<DVB_NET_DEVICES_MAX; i++) { | |
1617 | if (!dvbnet->state[i]) | |
1618 | continue; | |
1619 | dvb_net_remove_if(dvbnet, i); | |
1620 | } | |
1621 | } | |
1622 | EXPORT_SYMBOL(dvb_net_release); | |
1623 | ||
1624 | ||
1625 | int dvb_net_init (struct dvb_adapter *adap, struct dvb_net *dvbnet, | |
1626 | struct dmx_demux *dmx) | |
1627 | { | |
1628 | int i; | |
1629 | ||
30ad64b8 | 1630 | mutex_init(&dvbnet->ioctl_mutex); |
1da177e4 LT |
1631 | dvbnet->demux = dmx; |
1632 | ||
1633 | for (i=0; i<DVB_NET_DEVICES_MAX; i++) | |
1634 | dvbnet->state[i] = 0; | |
1635 | ||
58fae673 | 1636 | return dvb_register_device(adap, &dvbnet->dvbdev, &dvbdev_net, |
df2f94e5 | 1637 | dvbnet, DVB_DEVICE_NET, 0); |
1da177e4 LT |
1638 | } |
1639 | EXPORT_SYMBOL(dvb_net_init); |