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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 | ||
b3ad24d2 MCC |
57 | #define pr_fmt(fmt) "dvb_net: " fmt |
58 | ||
1da177e4 LT |
59 | #include <linux/module.h> |
60 | #include <linux/kernel.h> | |
61 | #include <linux/netdevice.h> | |
62 | #include <linux/etherdevice.h> | |
63 | #include <linux/dvb/net.h> | |
64 | #include <linux/uio.h> | |
7c0f6ba6 | 65 | #include <linux/uaccess.h> |
1da177e4 | 66 | #include <linux/crc32.h> |
3593cab5 | 67 | #include <linux/mutex.h> |
d43c36dc | 68 | #include <linux/sched.h> |
1da177e4 LT |
69 | |
70 | #include "dvb_demux.h" | |
71 | #include "dvb_net.h" | |
72 | ||
1da177e4 LT |
73 | static inline __u32 iov_crc32( __u32 c, struct kvec *iov, unsigned int cnt ) |
74 | { | |
75 | unsigned int j; | |
76 | for (j = 0; j < cnt; j++) | |
77 | c = crc32_be( c, iov[j].iov_base, iov[j].iov_len ); | |
78 | return c; | |
79 | } | |
80 | ||
81 | ||
82 | #define DVB_NET_MULTICAST_MAX 10 | |
83 | ||
84 | #undef ULE_DEBUG | |
85 | ||
86 | #ifdef ULE_DEBUG | |
87 | ||
4bad5d2d | 88 | static void hexdump(const unsigned char *buf, unsigned short len) |
1da177e4 | 89 | { |
4bad5d2d | 90 | print_hex_dump_debug("", DUMP_PREFIX_OFFSET, 16, 1, buf, len, true); |
1da177e4 LT |
91 | } |
92 | ||
93 | #endif | |
94 | ||
95 | struct dvb_net_priv { | |
96 | int in_use; | |
1da177e4 | 97 | u16 pid; |
c4028958 | 98 | struct net_device *net; |
1da177e4 LT |
99 | struct dvb_net *host; |
100 | struct dmx_demux *demux; | |
101 | struct dmx_section_feed *secfeed; | |
102 | struct dmx_section_filter *secfilter; | |
103 | struct dmx_ts_feed *tsfeed; | |
104 | int multi_num; | |
105 | struct dmx_section_filter *multi_secfilter[DVB_NET_MULTICAST_MAX]; | |
106 | unsigned char multi_macs[DVB_NET_MULTICAST_MAX][6]; | |
107 | int rx_mode; | |
108 | #define RX_MODE_UNI 0 | |
109 | #define RX_MODE_MULTI 1 | |
110 | #define RX_MODE_ALL_MULTI 2 | |
111 | #define RX_MODE_PROMISC 3 | |
112 | struct work_struct set_multicast_list_wq; | |
113 | struct work_struct restart_net_feed_wq; | |
114 | unsigned char feedtype; /* Either FEED_TYPE_ or FEED_TYPE_ULE */ | |
115 | int need_pusi; /* Set to 1, if synchronization on PUSI required. */ | |
116 | unsigned char tscc; /* TS continuity counter after sync on PUSI. */ | |
117 | struct sk_buff *ule_skb; /* ULE SNDU decodes into this buffer. */ | |
118 | unsigned char *ule_next_hdr; /* Pointer into skb to next ULE extension header. */ | |
119 | unsigned short ule_sndu_len; /* ULE SNDU length in bytes, w/o D-Bit. */ | |
120 | unsigned short ule_sndu_type; /* ULE SNDU type field, complete. */ | |
121 | unsigned char ule_sndu_type_1; /* ULE SNDU type field, if split across 2 TS cells. */ | |
122 | unsigned char ule_dbit; /* Whether the DestMAC address present | |
123 | * or not (bit is set). */ | |
124 | unsigned char ule_bridged; /* Whether the ULE_BRIDGED extension header was found. */ | |
125 | int ule_sndu_remain; /* Nr. of bytes still required for current ULE SNDU. */ | |
126 | unsigned long ts_count; /* Current ts cell counter. */ | |
3593cab5 | 127 | struct mutex mutex; |
1da177e4 LT |
128 | }; |
129 | ||
130 | ||
131 | /** | |
132 | * Determine the packet's protocol ID. The rule here is that we | |
133 | * assume 802.3 if the type field is short enough to be a length. | |
134 | * This is normal practice and works for any 'now in use' protocol. | |
135 | * | |
136 | * stolen from eth.c out of the linux kernel, hacked for dvb-device | |
137 | * by Michael Holzt <kju@debian.org> | |
138 | */ | |
12fbcef1 | 139 | static __be16 dvb_net_eth_type_trans(struct sk_buff *skb, |
1da177e4 LT |
140 | struct net_device *dev) |
141 | { | |
142 | struct ethhdr *eth; | |
143 | unsigned char *rawp; | |
144 | ||
98e399f8 | 145 | skb_reset_mac_header(skb); |
1da177e4 | 146 | skb_pull(skb,dev->hard_header_len); |
1da177e4 | 147 | eth = eth_hdr(skb); |
1da177e4 LT |
148 | |
149 | if (*eth->h_dest & 1) { | |
5e231c2c | 150 | if(ether_addr_equal(eth->h_dest,dev->broadcast)) |
1da177e4 LT |
151 | skb->pkt_type=PACKET_BROADCAST; |
152 | else | |
153 | skb->pkt_type=PACKET_MULTICAST; | |
154 | } | |
155 | ||
e5c5d22e | 156 | if (ntohs(eth->h_proto) >= ETH_P_802_3_MIN) |
1da177e4 LT |
157 | return eth->h_proto; |
158 | ||
159 | rawp = skb->data; | |
160 | ||
161 | /** | |
162 | * This is a magic hack to spot IPX packets. Older Novell breaks | |
163 | * the protocol design and runs IPX over 802.3 without an 802.2 LLC | |
164 | * layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This | |
165 | * won't work for fault tolerant netware but does for the rest. | |
166 | */ | |
167 | if (*(unsigned short *)rawp == 0xFFFF) | |
168 | return htons(ETH_P_802_3); | |
169 | ||
170 | /** | |
171 | * Real 802.2 LLC | |
172 | */ | |
173 | return htons(ETH_P_802_2); | |
174 | } | |
175 | ||
176 | #define TS_SZ 188 | |
177 | #define TS_SYNC 0x47 | |
178 | #define TS_TEI 0x80 | |
179 | #define TS_SC 0xC0 | |
180 | #define TS_PUSI 0x40 | |
181 | #define TS_AF_A 0x20 | |
182 | #define TS_AF_D 0x10 | |
183 | ||
184 | /* ULE Extension Header handlers. */ | |
185 | ||
186 | #define ULE_TEST 0 | |
187 | #define ULE_BRIDGED 1 | |
188 | ||
18232ca6 CP |
189 | #define ULE_OPTEXTHDR_PADDING 0 |
190 | ||
1da177e4 LT |
191 | static int ule_test_sndu( struct dvb_net_priv *p ) |
192 | { | |
193 | return -1; | |
194 | } | |
195 | ||
196 | static int ule_bridged_sndu( struct dvb_net_priv *p ) | |
197 | { | |
18232ca6 | 198 | struct ethhdr *hdr = (struct ethhdr*) p->ule_next_hdr; |
e5c5d22e | 199 | if(ntohs(hdr->h_proto) < ETH_P_802_3_MIN) { |
18232ca6 | 200 | int framelen = p->ule_sndu_len - ((p->ule_next_hdr+sizeof(struct ethhdr)) - p->ule_skb->data); |
e5c5d22e | 201 | /* A frame Type < ETH_P_802_3_MIN for a bridged frame, introduces a LLC Length field. */ |
18232ca6 CP |
202 | if(framelen != ntohs(hdr->h_proto)) { |
203 | return -1; | |
204 | } | |
205 | } | |
206 | /* Note: | |
207 | * From RFC4326: | |
208 | * "A bridged SNDU is a Mandatory Extension Header of Type 1. | |
209 | * It must be the final (or only) extension header specified in the header chain of a SNDU." | |
210 | * The 'ule_bridged' flag will cause the extension header processing loop to terminate. | |
1da177e4 LT |
211 | */ |
212 | p->ule_bridged = 1; | |
213 | return 0; | |
214 | } | |
215 | ||
18232ca6 CP |
216 | static int ule_exthdr_padding(struct dvb_net_priv *p) |
217 | { | |
218 | return 0; | |
219 | } | |
1da177e4 LT |
220 | |
221 | /** Handle ULE extension headers. | |
222 | * Function is called after a successful CRC32 verification of an ULE SNDU to complete its decoding. | |
223 | * Returns: >= 0: nr. of bytes consumed by next extension header | |
224 | * -1: Mandatory extension header that is not recognized or TEST SNDU; discard. | |
225 | */ | |
226 | static int handle_one_ule_extension( struct dvb_net_priv *p ) | |
227 | { | |
228 | /* Table of mandatory extension header handlers. The header type is the index. */ | |
229 | static int (*ule_mandatory_ext_handlers[255])( struct dvb_net_priv *p ) = | |
230 | { [0] = ule_test_sndu, [1] = ule_bridged_sndu, [2] = NULL, }; | |
231 | ||
232 | /* Table of optional extension header handlers. The header type is the index. */ | |
18232ca6 CP |
233 | static int (*ule_optional_ext_handlers[255])( struct dvb_net_priv *p ) = |
234 | { [0] = ule_exthdr_padding, [1] = NULL, }; | |
1da177e4 LT |
235 | |
236 | int ext_len = 0; | |
237 | unsigned char hlen = (p->ule_sndu_type & 0x0700) >> 8; | |
238 | unsigned char htype = p->ule_sndu_type & 0x00FF; | |
239 | ||
240 | /* Discriminate mandatory and optional extension headers. */ | |
241 | if (hlen == 0) { | |
242 | /* Mandatory extension header */ | |
243 | if (ule_mandatory_ext_handlers[htype]) { | |
244 | ext_len = ule_mandatory_ext_handlers[htype]( p ); | |
18232ca6 CP |
245 | if(ext_len >= 0) { |
246 | p->ule_next_hdr += ext_len; | |
247 | if (!p->ule_bridged) { | |
12fbcef1 | 248 | p->ule_sndu_type = ntohs(*(__be16 *)p->ule_next_hdr); |
18232ca6 CP |
249 | p->ule_next_hdr += 2; |
250 | } else { | |
12fbcef1 | 251 | p->ule_sndu_type = ntohs(*(__be16 *)(p->ule_next_hdr + ((p->ule_dbit ? 2 : 3) * ETH_ALEN))); |
18232ca6 CP |
252 | /* This assures the extension handling loop will terminate. */ |
253 | } | |
1da177e4 | 254 | } |
18232ca6 | 255 | // else: extension handler failed or SNDU should be discarded |
1da177e4 LT |
256 | } else |
257 | ext_len = -1; /* SNDU has to be discarded. */ | |
258 | } else { | |
259 | /* Optional extension header. Calculate the length. */ | |
18232ca6 | 260 | ext_len = hlen << 1; |
1da177e4 LT |
261 | /* Process the optional extension header according to its type. */ |
262 | if (ule_optional_ext_handlers[htype]) | |
263 | (void)ule_optional_ext_handlers[htype]( p ); | |
264 | p->ule_next_hdr += ext_len; | |
12fbcef1 | 265 | p->ule_sndu_type = ntohs( *(__be16 *)(p->ule_next_hdr-2) ); |
18232ca6 CP |
266 | /* |
267 | * note: the length of the next header type is included in the | |
268 | * length of THIS optional extension header | |
269 | */ | |
1da177e4 LT |
270 | } |
271 | ||
272 | return ext_len; | |
273 | } | |
274 | ||
275 | static int handle_ule_extensions( struct dvb_net_priv *p ) | |
276 | { | |
277 | int total_ext_len = 0, l; | |
278 | ||
279 | p->ule_next_hdr = p->ule_skb->data; | |
280 | do { | |
281 | l = handle_one_ule_extension( p ); | |
18232ca6 CP |
282 | if (l < 0) |
283 | return l; /* Stop extension header processing and discard SNDU. */ | |
1da177e4 | 284 | total_ext_len += l; |
18232ca6 | 285 | #ifdef ULE_DEBUG |
5c7c0ca0 JP |
286 | pr_debug("ule_next_hdr=%p, ule_sndu_type=%i, l=%i, total_ext_len=%i\n", |
287 | p->ule_next_hdr, (int)p->ule_sndu_type, | |
288 | l, total_ext_len); | |
18232ca6 | 289 | #endif |
1da177e4 | 290 | |
e5c5d22e | 291 | } while (p->ule_sndu_type < ETH_P_802_3_MIN); |
1da177e4 LT |
292 | |
293 | return total_ext_len; | |
294 | } | |
295 | ||
296 | ||
297 | /** Prepare for a new ULE SNDU: reset the decoder state. */ | |
298 | static inline void reset_ule( struct dvb_net_priv *p ) | |
299 | { | |
300 | p->ule_skb = NULL; | |
301 | p->ule_next_hdr = NULL; | |
302 | p->ule_sndu_len = 0; | |
303 | p->ule_sndu_type = 0; | |
304 | p->ule_sndu_type_1 = 0; | |
305 | p->ule_sndu_remain = 0; | |
306 | p->ule_dbit = 0xFF; | |
307 | p->ule_bridged = 0; | |
308 | } | |
309 | ||
310 | /** | |
311 | * Decode ULE SNDUs according to draft-ietf-ipdvb-ule-03.txt from a sequence of | |
312 | * TS cells of a single PID. | |
313 | */ | |
1da177e4 | 314 | |
efb9ab67 MCC |
315 | struct dvb_net_ule_handle { |
316 | struct net_device *dev; | |
317 | struct dvb_net_priv *priv; | |
318 | struct ethhdr *ethh; | |
319 | const u8 *buf; | |
320 | size_t buf_len; | |
321 | unsigned long skipped; | |
322 | const u8 *ts, *ts_end, *from_where; | |
323 | u8 ts_remain, how_much, new_ts; | |
324 | bool error; | |
1da177e4 | 325 | #ifdef ULE_DEBUG |
efb9ab67 MCC |
326 | /* |
327 | * The code inside ULE_DEBUG keeps a history of the | |
328 | * last 100 TS cells processed. | |
329 | */ | |
1da177e4 | 330 | static unsigned char ule_hist[100*TS_SZ]; |
ff699e6b | 331 | static unsigned char *ule_where = ule_hist, ule_dump; |
1da177e4 | 332 | #endif |
efb9ab67 | 333 | }; |
1da177e4 | 334 | |
8b0041db MCC |
335 | static int dvb_net_ule_new_ts_cell(struct dvb_net_ule_handle *h) |
336 | { | |
337 | /* We are about to process a new TS cell. */ | |
1da177e4 LT |
338 | |
339 | #ifdef ULE_DEBUG | |
8b0041db MCC |
340 | if (h->ule_where >= &h->ule_hist[100*TS_SZ]) |
341 | h->ule_where = h->ule_hist; | |
342 | memcpy(h->ule_where, h->ts, TS_SZ); | |
343 | if (h->ule_dump) { | |
344 | hexdump(h->ule_where, TS_SZ); | |
345 | h->ule_dump = 0; | |
346 | } | |
347 | h->ule_where += TS_SZ; | |
1da177e4 LT |
348 | #endif |
349 | ||
8b0041db MCC |
350 | /* |
351 | * Check TS h->error conditions: sync_byte, transport_error_indicator, | |
352 | * scrambling_control . | |
353 | */ | |
354 | if ((h->ts[0] != TS_SYNC) || (h->ts[1] & TS_TEI) || | |
355 | ((h->ts[3] & TS_SC) != 0)) { | |
356 | pr_warn("%lu: Invalid TS cell: SYNC %#x, TEI %u, SC %#x.\n", | |
357 | h->priv->ts_count, h->ts[0], | |
358 | (h->ts[1] & TS_TEI) >> 7, | |
359 | (h->ts[3] & TS_SC) >> 6); | |
360 | ||
361 | /* Drop partly decoded SNDU, reset state, resync on PUSI. */ | |
362 | if (h->priv->ule_skb) { | |
363 | dev_kfree_skb(h->priv->ule_skb); | |
364 | /* Prepare for next SNDU. */ | |
365 | h->dev->stats.rx_errors++; | |
366 | h->dev->stats.rx_frame_errors++; | |
367 | } | |
368 | reset_ule(h->priv); | |
369 | h->priv->need_pusi = 1; | |
1da177e4 | 370 | |
8b0041db MCC |
371 | /* Continue with next TS cell. */ |
372 | h->ts += TS_SZ; | |
373 | h->priv->ts_count++; | |
374 | return 1; | |
375 | } | |
376 | ||
377 | h->ts_remain = 184; | |
378 | h->from_where = h->ts + 4; | |
1da177e4 | 379 | |
8b0041db MCC |
380 | return 0; |
381 | } | |
382 | ||
383 | static int dvb_net_ule_ts_pusi(struct dvb_net_ule_handle *h) | |
384 | { | |
385 | if (h->ts[1] & TS_PUSI) { | |
386 | /* Find beginning of first ULE SNDU in current TS cell. */ | |
387 | /* Synchronize continuity counter. */ | |
388 | h->priv->tscc = h->ts[3] & 0x0F; | |
389 | /* There is a pointer field here. */ | |
390 | if (h->ts[4] > h->ts_remain) { | |
391 | pr_err("%lu: Invalid ULE packet (pointer field %d)\n", | |
392 | h->priv->ts_count, h->ts[4]); | |
393 | h->ts += TS_SZ; | |
394 | h->priv->ts_count++; | |
395 | return 1; | |
1da177e4 | 396 | } |
8b0041db MCC |
397 | /* Skip to destination of pointer field. */ |
398 | h->from_where = &h->ts[5] + h->ts[4]; | |
399 | h->ts_remain -= 1 + h->ts[4]; | |
400 | h->skipped = 0; | |
401 | } else { | |
402 | h->skipped++; | |
403 | h->ts += TS_SZ; | |
404 | h->priv->ts_count++; | |
405 | return 1; | |
406 | } | |
407 | ||
408 | return 0; | |
409 | } | |
410 | ||
411 | static int dvb_net_ule_new_ts(struct dvb_net_ule_handle *h) | |
412 | { | |
413 | /* Check continuity counter. */ | |
414 | if ((h->ts[3] & 0x0F) == h->priv->tscc) | |
415 | h->priv->tscc = (h->priv->tscc + 1) & 0x0F; | |
416 | else { | |
417 | /* TS discontinuity handling: */ | |
418 | pr_warn("%lu: TS discontinuity: got %#x, expected %#x.\n", | |
419 | h->priv->ts_count, h->ts[3] & 0x0F, | |
420 | h->priv->tscc); | |
421 | /* Drop partly decoded SNDU, reset state, resync on PUSI. */ | |
422 | if (h->priv->ule_skb) { | |
423 | dev_kfree_skb(h->priv->ule_skb); | |
424 | /* Prepare for next SNDU. */ | |
425 | // reset_ule(h->priv); moved to below. | |
426 | h->dev->stats.rx_errors++; | |
427 | h->dev->stats.rx_frame_errors++; | |
1da177e4 | 428 | } |
8b0041db MCC |
429 | reset_ule(h->priv); |
430 | /* skip to next PUSI. */ | |
431 | h->priv->need_pusi = 1; | |
432 | return 1; | |
433 | } | |
434 | /* | |
435 | * If we still have an incomplete payload, but PUSI is | |
436 | * set; some TS cells are missing. | |
437 | * This is only possible here, if we missed exactly 16 TS | |
438 | * cells (continuity counter wrap). | |
439 | */ | |
440 | if (h->ts[1] & TS_PUSI) { | |
441 | if (!h->priv->need_pusi) { | |
442 | if (!(*h->from_where < (h->ts_remain-1)) || | |
443 | *h->from_where != h->priv->ule_sndu_remain) { | |
444 | /* | |
445 | * Pointer field is invalid. | |
446 | * Drop this TS cell and any started ULE SNDU. | |
447 | */ | |
448 | pr_warn("%lu: Invalid pointer field: %u.\n", | |
449 | h->priv->ts_count, | |
450 | *h->from_where); | |
1da177e4 | 451 | |
8b0041db MCC |
452 | /* |
453 | * Drop partly decoded SNDU, reset state, | |
454 | * resync on PUSI. | |
455 | */ | |
456 | if (h->priv->ule_skb) { | |
457 | h->error = true; | |
458 | dev_kfree_skb(h->priv->ule_skb); | |
1da177e4 | 459 | } |
8b0041db MCC |
460 | |
461 | if (h->error || h->priv->ule_sndu_remain) { | |
462 | h->dev->stats.rx_errors++; | |
463 | h->dev->stats.rx_frame_errors++; | |
464 | h->error = false; | |
1da177e4 | 465 | } |
8b0041db MCC |
466 | |
467 | reset_ule(h->priv); | |
468 | h->priv->need_pusi = 1; | |
469 | return 1; | |
1da177e4 | 470 | } |
8b0041db MCC |
471 | /* |
472 | * Skip pointer field (we're processing a | |
473 | * packed payload). | |
474 | */ | |
475 | h->from_where += 1; | |
476 | h->ts_remain -= 1; | |
477 | } else | |
478 | h->priv->need_pusi = 0; | |
479 | ||
480 | if (h->priv->ule_sndu_remain > 183) { | |
481 | /* | |
482 | * Current SNDU lacks more data than there | |
483 | * could be available in the current TS cell. | |
484 | */ | |
485 | h->dev->stats.rx_errors++; | |
486 | h->dev->stats.rx_length_errors++; | |
487 | pr_warn("%lu: Expected %d more SNDU bytes, but got PUSI (pf %d, h->ts_remain %d). Flushing incomplete payload.\n", | |
488 | h->priv->ts_count, | |
489 | h->priv->ule_sndu_remain, | |
490 | h->ts[4], h->ts_remain); | |
491 | dev_kfree_skb(h->priv->ule_skb); | |
492 | /* Prepare for next SNDU. */ | |
493 | reset_ule(h->priv); | |
494 | /* | |
495 | * Resync: go to where pointer field points to: | |
496 | * start of next ULE SNDU. | |
497 | */ | |
498 | h->from_where += h->ts[4]; | |
499 | h->ts_remain -= h->ts[4]; | |
1da177e4 | 500 | } |
8b0041db MCC |
501 | } |
502 | return 0; | |
503 | } | |
1da177e4 | 504 | |
1da177e4 | 505 | |
8b0041db MCC |
506 | /* |
507 | * Start a new payload with skb. | |
508 | * Find ULE header. It is only guaranteed that the | |
509 | * length field (2 bytes) is contained in the current | |
510 | * TS. | |
511 | * Check h.ts_remain has to be >= 2 here. | |
512 | */ | |
513 | static int dvb_net_ule_new_payload(struct dvb_net_ule_handle *h) | |
514 | { | |
515 | if (h->ts_remain < 2) { | |
516 | pr_warn("Invalid payload packing: only %d bytes left in TS. Resyncing.\n", | |
517 | h->ts_remain); | |
518 | h->priv->ule_sndu_len = 0; | |
519 | h->priv->need_pusi = 1; | |
520 | h->ts += TS_SZ; | |
521 | return 1; | |
522 | } | |
523 | ||
524 | if (!h->priv->ule_sndu_len) { | |
525 | /* Got at least two bytes, thus extrace the SNDU length. */ | |
526 | h->priv->ule_sndu_len = h->from_where[0] << 8 | | |
527 | h->from_where[1]; | |
528 | if (h->priv->ule_sndu_len & 0x8000) { | |
529 | /* D-Bit is set: no dest mac present. */ | |
530 | h->priv->ule_sndu_len &= 0x7FFF; | |
531 | h->priv->ule_dbit = 1; | |
532 | } else | |
533 | h->priv->ule_dbit = 0; | |
534 | ||
535 | if (h->priv->ule_sndu_len < 5) { | |
536 | pr_warn("%lu: Invalid ULE SNDU length %u. Resyncing.\n", | |
537 | h->priv->ts_count, | |
538 | h->priv->ule_sndu_len); | |
539 | h->dev->stats.rx_errors++; | |
540 | h->dev->stats.rx_length_errors++; | |
541 | h->priv->ule_sndu_len = 0; | |
542 | h->priv->need_pusi = 1; | |
543 | h->new_ts = 1; | |
544 | h->ts += TS_SZ; | |
545 | h->priv->ts_count++; | |
546 | return 1; | |
547 | } | |
548 | h->ts_remain -= 2; /* consume the 2 bytes SNDU length. */ | |
549 | h->from_where += 2; | |
550 | } | |
551 | ||
552 | h->priv->ule_sndu_remain = h->priv->ule_sndu_len + 2; | |
553 | /* | |
554 | * State of current TS: | |
555 | * h->ts_remain (remaining bytes in the current TS cell) | |
556 | * 0 ule_type is not available now, we need the next TS cell | |
557 | * 1 the first byte of the ule_type is present | |
558 | * >=2 full ULE header present, maybe some payload data as well. | |
559 | */ | |
560 | switch (h->ts_remain) { | |
561 | case 1: | |
562 | h->priv->ule_sndu_remain--; | |
563 | h->priv->ule_sndu_type = h->from_where[0] << 8; | |
564 | ||
565 | /* first byte of ule_type is set. */ | |
566 | h->priv->ule_sndu_type_1 = 1; | |
567 | h->ts_remain -= 1; | |
568 | h->from_where += 1; | |
569 | /* fallthrough */ | |
570 | case 0: | |
571 | h->new_ts = 1; | |
572 | h->ts += TS_SZ; | |
573 | h->priv->ts_count++; | |
574 | return 1; | |
575 | ||
576 | default: /* complete ULE header is present in current TS. */ | |
577 | /* Extract ULE type field. */ | |
578 | if (h->priv->ule_sndu_type_1) { | |
579 | h->priv->ule_sndu_type_1 = 0; | |
580 | h->priv->ule_sndu_type |= h->from_where[0]; | |
581 | h->from_where += 1; /* points to payload start. */ | |
582 | h->ts_remain -= 1; | |
583 | } else { | |
584 | /* Complete type is present in new TS. */ | |
585 | h->priv->ule_sndu_type = h->from_where[0] << 8 | | |
586 | h->from_where[1]; | |
587 | h->from_where += 2; /* points to payload start. */ | |
588 | h->ts_remain -= 2; | |
589 | } | |
590 | break; | |
591 | } | |
592 | ||
593 | /* | |
594 | * Allocate the skb (decoder target buffer) with the correct size, | |
595 | * as follows: | |
596 | * | |
597 | * prepare for the largest case: bridged SNDU with MAC address | |
598 | * (dbit = 0). | |
599 | */ | |
600 | h->priv->ule_skb = dev_alloc_skb(h->priv->ule_sndu_len + | |
601 | ETH_HLEN + ETH_ALEN); | |
602 | if (!h->priv->ule_skb) { | |
603 | pr_notice("%s: Memory squeeze, dropping packet.\n", | |
604 | h->dev->name); | |
605 | h->dev->stats.rx_dropped++; | |
606 | return -1; | |
607 | } | |
608 | ||
609 | /* This includes the CRC32 _and_ dest mac, if !dbit. */ | |
610 | h->priv->ule_sndu_remain = h->priv->ule_sndu_len; | |
611 | h->priv->ule_skb->dev = h->dev; | |
612 | /* | |
613 | * Leave space for Ethernet or bridged SNDU header | |
614 | * (eth hdr plus one MAC addr). | |
615 | */ | |
616 | skb_reserve(h->priv->ule_skb, ETH_HLEN + ETH_ALEN); | |
617 | ||
618 | return 0; | |
619 | } | |
620 | ||
1da177e4 | 621 | |
8b0041db MCC |
622 | static int dvb_net_ule_should_drop(struct dvb_net_ule_handle *h) |
623 | { | |
624 | static const u8 bc_addr[ETH_ALEN] = { [0 ... ETH_ALEN - 1] = 0xff }; | |
625 | ||
626 | /* | |
627 | * The destination MAC address is the next data in the skb. It comes | |
628 | * before any extension headers. | |
629 | * | |
630 | * Check if the payload of this SNDU should be passed up the stack. | |
631 | */ | |
632 | if (h->priv->rx_mode == RX_MODE_PROMISC) | |
633 | return 0; | |
634 | ||
635 | if (h->priv->ule_skb->data[0] & 0x01) { | |
636 | /* multicast or broadcast */ | |
637 | if (!ether_addr_equal(h->priv->ule_skb->data, bc_addr)) { | |
638 | /* multicast */ | |
639 | if (h->priv->rx_mode == RX_MODE_MULTI) { | |
640 | int i; | |
641 | ||
642 | for (i = 0; i < h->priv->multi_num && | |
643 | !ether_addr_equal(h->priv->ule_skb->data, | |
644 | h->priv->multi_macs[i]); | |
645 | i++) | |
646 | ; | |
647 | if (i == h->priv->multi_num) | |
648 | return 1; | |
649 | } else if (h->priv->rx_mode != RX_MODE_ALL_MULTI) | |
650 | return 1; /* no broadcast; */ | |
1da177e4 | 651 | /* |
8b0041db MCC |
652 | * else: |
653 | * all multicast mode: accept all multicast packets | |
1da177e4 | 654 | */ |
8b0041db MCC |
655 | } |
656 | /* else: broadcast */ | |
657 | } else if (!ether_addr_equal(h->priv->ule_skb->data, h->dev->dev_addr)) | |
658 | return 1; | |
1da177e4 | 659 | |
8b0041db MCC |
660 | return 0; |
661 | } | |
662 | ||
663 | ||
664 | static void dvb_net_ule_check_crc(struct dvb_net_ule_handle *h, | |
665 | u32 ule_crc, u32 expected_crc) | |
666 | { | |
667 | u8 dest_addr[ETH_ALEN]; | |
668 | ||
669 | if (ule_crc != expected_crc) { | |
670 | pr_warn("%lu: CRC32 check FAILED: %08x / %08x, SNDU len %d type %#x, ts_remain %d, next 2: %x.\n", | |
671 | h->priv->ts_count, ule_crc, expected_crc, | |
672 | h->priv->ule_sndu_len, h->priv->ule_sndu_type, | |
673 | h->ts_remain, | |
674 | h->ts_remain > 2 ? | |
675 | *(unsigned short *)h->from_where : 0); | |
676 | ||
677 | #ifdef ULE_DEBUG | |
678 | hexdump(iov[0].iov_base, iov[0].iov_len); | |
679 | hexdump(iov[1].iov_base, iov[1].iov_len); | |
680 | hexdump(iov[2].iov_base, iov[2].iov_len); | |
681 | ||
682 | if (h->ule_where == h->ule_hist) { | |
683 | hexdump(&h->ule_hist[98*TS_SZ], TS_SZ); | |
684 | hexdump(&h->ule_hist[99*TS_SZ], TS_SZ); | |
685 | } else if (h->ule_where == &h->ule_hist[TS_SZ]) { | |
686 | hexdump(&h->ule_hist[99*TS_SZ], TS_SZ); | |
687 | hexdump(h->ule_hist, TS_SZ); | |
688 | } else { | |
689 | hexdump(h->ule_where - TS_SZ - TS_SZ, TS_SZ); | |
690 | hexdump(h->ule_where - TS_SZ, TS_SZ); | |
691 | } | |
692 | h->ule_dump = 1; | |
693 | #endif | |
694 | ||
695 | h->dev->stats.rx_errors++; | |
696 | h->dev->stats.rx_crc_errors++; | |
697 | dev_kfree_skb(h->priv->ule_skb); | |
698 | ||
699 | return; | |
700 | } | |
701 | ||
702 | /* CRC32 verified OK. */ | |
703 | ||
704 | /* CRC32 was OK, so remove it from skb. */ | |
705 | h->priv->ule_skb->tail -= 4; | |
706 | h->priv->ule_skb->len -= 4; | |
707 | ||
708 | if (!h->priv->ule_dbit) { | |
709 | if (dvb_net_ule_should_drop(h)) { | |
710 | #ifdef ULE_DEBUG | |
711 | netdev_dbg(h->dev, | |
712 | "Dropping SNDU: MAC destination address does not match: dest addr: %pM, h->dev addr: %pM\n", | |
713 | h->priv->ule_skb->data, h->dev->dev_addr); | |
714 | #endif | |
715 | dev_kfree_skb(h->priv->ule_skb); | |
716 | return; | |
717 | } | |
718 | ||
719 | skb_copy_from_linear_data(h->priv->ule_skb, dest_addr, | |
720 | ETH_ALEN); | |
721 | skb_pull(h->priv->ule_skb, ETH_ALEN); | |
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; | |
753 | if (!h->priv->ule_dbit) { | |
754 | /* | |
755 | * dest_addr buffer is only valid if | |
756 | * h->priv->ule_dbit == 0 | |
757 | */ | |
758 | memcpy(h->ethh->h_dest, dest_addr, ETH_ALEN); | |
759 | eth_zero_addr(h->ethh->h_source); | |
760 | } else /* zeroize source and dest */ | |
761 | memset(h->ethh, 0, ETH_ALEN * 2); | |
1da177e4 | 762 | |
8b0041db MCC |
763 | h->ethh->h_proto = htons(h->priv->ule_sndu_type); |
764 | } | |
765 | /* else: skb is in correct state; nothing to do. */ | |
766 | h->priv->ule_bridged = 0; | |
767 | ||
768 | /* Stuff into kernel's protocol stack. */ | |
769 | h->priv->ule_skb->protocol = dvb_net_eth_type_trans(h->priv->ule_skb, | |
770 | h->dev); | |
771 | /* | |
772 | * If D-bit is set (i.e. destination MAC address not present), | |
773 | * receive the packet anyhow. | |
774 | */ | |
775 | #if 0 | |
776 | if (h->priv->ule_dbit && skb->pkt_type == PACKET_OTHERHOST) | |
777 | h->priv->ule_skb->pkt_type = PACKET_HOST; | |
778 | #endif | |
779 | h->dev->stats.rx_packets++; | |
780 | h->dev->stats.rx_bytes += h->priv->ule_skb->len; | |
781 | netif_rx(h->priv->ule_skb); | |
782 | } | |
783 | ||
efb9ab67 MCC |
784 | static void dvb_net_ule(struct net_device *dev, const u8 *buf, size_t buf_len) |
785 | { | |
8b0041db | 786 | int ret; |
efb9ab67 MCC |
787 | struct dvb_net_ule_handle h = { |
788 | .dev = dev, | |
789 | .buf = buf, | |
790 | .buf_len = buf_len, | |
791 | .skipped = 0L, | |
792 | .ts = NULL, | |
793 | .ts_end = NULL, | |
794 | .from_where = NULL, | |
795 | .ts_remain = 0, | |
796 | .how_much = 0, | |
797 | .new_ts = 1, | |
798 | .ethh = NULL, | |
799 | .error = false, | |
800 | #ifdef ULE_DEBUG | |
801 | .ule_where = ule_hist, | |
802 | #endif | |
803 | }; | |
1da177e4 | 804 | |
8b0041db MCC |
805 | /* |
806 | * For all TS cells in current buffer. | |
1da177e4 LT |
807 | * Appearently, we are called for every single TS cell. |
808 | */ | |
8b0041db MCC |
809 | for (h.ts = h.buf, h.ts_end = h.buf + h.buf_len; |
810 | h.ts < h.ts_end; /* no incr. */) { | |
efb9ab67 | 811 | if (h.new_ts) { |
1da177e4 | 812 | /* We are about to process a new TS cell. */ |
8b0041db | 813 | if (dvb_net_ule_new_ts_cell(&h)) |
1da177e4 | 814 | continue; |
1da177e4 | 815 | } |
8b0041db | 816 | |
1da177e4 | 817 | /* Synchronize on PUSI, if required. */ |
efb9ab67 | 818 | if (h.priv->need_pusi) { |
8b0041db | 819 | if (dvb_net_ule_ts_pusi(&h)) |
1da177e4 | 820 | continue; |
1da177e4 LT |
821 | } |
822 | ||
efb9ab67 | 823 | if (h.new_ts) { |
8b0041db | 824 | if (dvb_net_ule_new_ts(&h)) |
1da177e4 | 825 | continue; |
1da177e4 LT |
826 | } |
827 | ||
828 | /* Check if new payload needs to be started. */ | |
efb9ab67 | 829 | if (h.priv->ule_skb == NULL) { |
8b0041db MCC |
830 | ret = dvb_net_ule_new_payload(&h); |
831 | if (ret < 0) | |
1da177e4 | 832 | return; |
8b0041db MCC |
833 | if (ret) |
834 | continue; | |
1da177e4 LT |
835 | } |
836 | ||
837 | /* Copy data into our current skb. */ | |
efb9ab67 | 838 | h.how_much = min(h.priv->ule_sndu_remain, (int)h.ts_remain); |
8b0041db MCC |
839 | memcpy(skb_put(h.priv->ule_skb, h.how_much), |
840 | h.from_where, h.how_much); | |
efb9ab67 MCC |
841 | h.priv->ule_sndu_remain -= h.how_much; |
842 | h.ts_remain -= h.how_much; | |
843 | h.from_where += h.how_much; | |
1da177e4 LT |
844 | |
845 | /* Check for complete payload. */ | |
efb9ab67 | 846 | if (h.priv->ule_sndu_remain <= 0) { |
1da177e4 | 847 | /* Check CRC32, we've got it in our skb already. */ |
efb9ab67 MCC |
848 | __be16 ulen = htons(h.priv->ule_sndu_len); |
849 | __be16 utype = htons(h.priv->ule_sndu_type); | |
27a884dc | 850 | const u8 *tail; |
1da177e4 LT |
851 | struct kvec iov[3] = { |
852 | { &ulen, sizeof ulen }, | |
853 | { &utype, sizeof utype }, | |
8b0041db MCC |
854 | { h.priv->ule_skb->data, |
855 | h.priv->ule_skb->len - 4 } | |
1da177e4 | 856 | }; |
dedcefb0 | 857 | u32 ule_crc = ~0L, expected_crc; |
efb9ab67 | 858 | if (h.priv->ule_dbit) { |
1da177e4 LT |
859 | /* Set D-bit for CRC32 verification, |
860 | * if it was set originally. */ | |
f51b10ef | 861 | ulen |= htons(0x8000); |
1da177e4 LT |
862 | } |
863 | ||
864 | ule_crc = iov_crc32(ule_crc, iov, 3); | |
efb9ab67 | 865 | tail = skb_tail_pointer(h.priv->ule_skb); |
27a884dc ACM |
866 | expected_crc = *(tail - 4) << 24 | |
867 | *(tail - 3) << 16 | | |
868 | *(tail - 2) << 8 | | |
869 | *(tail - 1); | |
1da177e4 | 870 | |
8b0041db | 871 | dvb_net_ule_check_crc(&h, ule_crc, expected_crc); |
1da177e4 | 872 | |
1da177e4 | 873 | /* Prepare for next SNDU. */ |
efb9ab67 | 874 | reset_ule(h.priv); |
1da177e4 LT |
875 | } |
876 | ||
877 | /* More data in current TS (look at the bytes following the CRC32)? */ | |
efb9ab67 | 878 | if (h.ts_remain >= 2 && *((unsigned short *)h.from_where) != 0xFFFF) { |
1da177e4 | 879 | /* Next ULE SNDU starts right there. */ |
efb9ab67 MCC |
880 | h.new_ts = 0; |
881 | h.priv->ule_skb = NULL; | |
882 | h.priv->ule_sndu_type_1 = 0; | |
883 | h.priv->ule_sndu_len = 0; | |
b3ad24d2 | 884 | // pr_warn("More data in current TS: [%#x %#x %#x %#x]\n", |
efb9ab67 MCC |
885 | // *(h.from_where + 0), *(h.from_where + 1), |
886 | // *(h.from_where + 2), *(h.from_where + 3)); | |
887 | // pr_warn("h.ts @ %p, stopped @ %p:\n", h.ts, h.from_where + 0); | |
888 | // hexdump(h.ts, 188); | |
1da177e4 | 889 | } else { |
efb9ab67 MCC |
890 | h.new_ts = 1; |
891 | h.ts += TS_SZ; | |
892 | h.priv->ts_count++; | |
893 | if (h.priv->ule_skb == NULL) { | |
894 | h.priv->need_pusi = 1; | |
895 | h.priv->ule_sndu_type_1 = 0; | |
896 | h.priv->ule_sndu_len = 0; | |
1da177e4 LT |
897 | } |
898 | } | |
899 | } /* for all available TS cells */ | |
900 | } | |
901 | ||
902 | static int dvb_net_ts_callback(const u8 *buffer1, size_t buffer1_len, | |
903 | const u8 *buffer2, size_t buffer2_len, | |
2f684b23 | 904 | struct dmx_ts_feed *feed) |
1da177e4 | 905 | { |
0c53c70f | 906 | struct net_device *dev = feed->priv; |
1da177e4 | 907 | |
5fa1247a | 908 | if (buffer2) |
b3ad24d2 | 909 | pr_warn("buffer2 not NULL: %p.\n", buffer2); |
1da177e4 | 910 | if (buffer1_len > 32768) |
b3ad24d2 MCC |
911 | pr_warn("length > 32k: %zu.\n", buffer1_len); |
912 | /* pr_info("TS callback: %u bytes, %u TS cells @ %p.\n", | |
afd1a0c9 | 913 | buffer1_len, buffer1_len / TS_SZ, buffer1); */ |
1da177e4 LT |
914 | dvb_net_ule(dev, buffer1, buffer1_len); |
915 | return 0; | |
916 | } | |
917 | ||
918 | ||
71be258b MK |
919 | static void dvb_net_sec(struct net_device *dev, |
920 | const u8 *pkt, int pkt_len) | |
1da177e4 | 921 | { |
afd1a0c9 MCC |
922 | u8 *eth; |
923 | struct sk_buff *skb; | |
fb875333 | 924 | struct net_device_stats *stats = &dev->stats; |
59142330 | 925 | int snap = 0; |
1da177e4 LT |
926 | |
927 | /* note: pkt_len includes a 32bit checksum */ | |
928 | if (pkt_len < 16) { | |
b3ad24d2 | 929 | pr_warn("%s: IP/MPE packet length = %d too small.\n", |
1da177e4 LT |
930 | dev->name, pkt_len); |
931 | stats->rx_errors++; | |
932 | stats->rx_length_errors++; | |
933 | return; | |
934 | } | |
935 | /* it seems some ISPs manage to screw up here, so we have to | |
936 | * relax the error checks... */ | |
937 | #if 0 | |
938 | if ((pkt[5] & 0xfd) != 0xc1) { | |
939 | /* drop scrambled or broken packets */ | |
940 | #else | |
941 | if ((pkt[5] & 0x3c) != 0x00) { | |
942 | /* drop scrambled */ | |
943 | #endif | |
944 | stats->rx_errors++; | |
945 | stats->rx_crc_errors++; | |
946 | return; | |
947 | } | |
948 | if (pkt[5] & 0x02) { | |
59142330 JS |
949 | /* handle LLC/SNAP, see rfc-1042 */ |
950 | if (pkt_len < 24 || memcmp(&pkt[12], "\xaa\xaa\x03\0\0\0", 6)) { | |
951 | stats->rx_dropped++; | |
952 | return; | |
953 | } | |
954 | snap = 8; | |
afd1a0c9 | 955 | } |
1da177e4 LT |
956 | if (pkt[7]) { |
957 | /* FIXME: assemble datagram from multiple sections */ | |
958 | stats->rx_errors++; | |
959 | stats->rx_frame_errors++; | |
960 | return; | |
961 | } | |
962 | ||
963 | /* we have 14 byte ethernet header (ip header follows); | |
59142330 | 964 | * 12 byte MPE header; 4 byte checksum; + 2 byte alignment, 8 byte LLC/SNAP |
1da177e4 | 965 | */ |
59142330 | 966 | if (!(skb = dev_alloc_skb(pkt_len - 4 - 12 + 14 + 2 - snap))) { |
b3ad24d2 | 967 | //pr_notice("%s: Memory squeeze, dropping packet.\n", dev->name); |
1da177e4 LT |
968 | stats->rx_dropped++; |
969 | return; | |
970 | } | |
971 | skb_reserve(skb, 2); /* longword align L3 header */ | |
972 | skb->dev = dev; | |
973 | ||
974 | /* copy L3 payload */ | |
59142330 JS |
975 | eth = (u8 *) skb_put(skb, pkt_len - 12 - 4 + 14 - snap); |
976 | memcpy(eth + 14, pkt + 12 + snap, pkt_len - 12 - 4 - snap); | |
1da177e4 LT |
977 | |
978 | /* create ethernet header: */ | |
afd1a0c9 MCC |
979 | eth[0]=pkt[0x0b]; |
980 | eth[1]=pkt[0x0a]; | |
981 | eth[2]=pkt[0x09]; | |
982 | eth[3]=pkt[0x08]; | |
983 | eth[4]=pkt[0x04]; | |
984 | eth[5]=pkt[0x03]; | |
1da177e4 | 985 | |
afd1a0c9 | 986 | eth[6]=eth[7]=eth[8]=eth[9]=eth[10]=eth[11]=0; |
1da177e4 | 987 | |
59142330 JS |
988 | if (snap) { |
989 | eth[12] = pkt[18]; | |
990 | eth[13] = pkt[19]; | |
991 | } else { | |
992 | /* protocol numbers are from rfc-1700 or | |
993 | * http://www.iana.org/assignments/ethernet-numbers | |
994 | */ | |
995 | if (pkt[12] >> 4 == 6) { /* version field from IP header */ | |
996 | eth[12] = 0x86; /* IPv6 */ | |
997 | eth[13] = 0xdd; | |
998 | } else { | |
999 | eth[12] = 0x08; /* IPv4 */ | |
1000 | eth[13] = 0x00; | |
1001 | } | |
1002 | } | |
1da177e4 LT |
1003 | |
1004 | skb->protocol = dvb_net_eth_type_trans(skb, dev); | |
1005 | ||
1006 | stats->rx_packets++; | |
1007 | stats->rx_bytes+=skb->len; | |
afd1a0c9 | 1008 | netif_rx(skb); |
1da177e4 LT |
1009 | } |
1010 | ||
1011 | static int dvb_net_sec_callback(const u8 *buffer1, size_t buffer1_len, | |
1012 | const u8 *buffer2, size_t buffer2_len, | |
2f684b23 | 1013 | struct dmx_section_filter *filter) |
1da177e4 | 1014 | { |
afd1a0c9 | 1015 | struct net_device *dev = filter->priv; |
1da177e4 LT |
1016 | |
1017 | /** | |
1018 | * we rely on the DVB API definition where exactly one complete | |
1019 | * section is delivered in buffer1 | |
1020 | */ | |
04b35abe | 1021 | dvb_net_sec (dev, buffer1, buffer1_len); |
1da177e4 LT |
1022 | return 0; |
1023 | } | |
1024 | ||
1025 | static int dvb_net_tx(struct sk_buff *skb, struct net_device *dev) | |
1026 | { | |
1027 | dev_kfree_skb(skb); | |
6ed10654 | 1028 | return NETDEV_TX_OK; |
1da177e4 LT |
1029 | } |
1030 | ||
1031 | static u8 mask_normal[6]={0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; | |
1032 | static u8 mask_allmulti[6]={0xff, 0xff, 0xff, 0x00, 0x00, 0x00}; | |
1033 | static u8 mac_allmulti[6]={0x01, 0x00, 0x5e, 0x00, 0x00, 0x00}; | |
1034 | static u8 mask_promisc[6]={0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; | |
1035 | ||
1036 | static int dvb_net_filter_sec_set(struct net_device *dev, | |
1037 | struct dmx_section_filter **secfilter, | |
1038 | u8 *mac, u8 *mac_mask) | |
1039 | { | |
0eade1f9 | 1040 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1041 | int ret; |
1042 | ||
1043 | *secfilter=NULL; | |
1044 | ret = priv->secfeed->allocate_filter(priv->secfeed, secfilter); | |
1045 | if (ret<0) { | |
b3ad24d2 | 1046 | pr_err("%s: could not get filter\n", dev->name); |
1da177e4 LT |
1047 | return ret; |
1048 | } | |
1049 | ||
1050 | (*secfilter)->priv=(void *) dev; | |
1051 | ||
1052 | memset((*secfilter)->filter_value, 0x00, DMX_MAX_FILTER_SIZE); | |
1053 | memset((*secfilter)->filter_mask, 0x00, DMX_MAX_FILTER_SIZE); | |
1054 | memset((*secfilter)->filter_mode, 0xff, DMX_MAX_FILTER_SIZE); | |
1055 | ||
1056 | (*secfilter)->filter_value[0]=0x3e; | |
1057 | (*secfilter)->filter_value[3]=mac[5]; | |
1058 | (*secfilter)->filter_value[4]=mac[4]; | |
1059 | (*secfilter)->filter_value[8]=mac[3]; | |
1060 | (*secfilter)->filter_value[9]=mac[2]; | |
1061 | (*secfilter)->filter_value[10]=mac[1]; | |
1062 | (*secfilter)->filter_value[11]=mac[0]; | |
1063 | ||
1064 | (*secfilter)->filter_mask[0] = 0xff; | |
1065 | (*secfilter)->filter_mask[3] = mac_mask[5]; | |
1066 | (*secfilter)->filter_mask[4] = mac_mask[4]; | |
1067 | (*secfilter)->filter_mask[8] = mac_mask[3]; | |
1068 | (*secfilter)->filter_mask[9] = mac_mask[2]; | |
1069 | (*secfilter)->filter_mask[10] = mac_mask[1]; | |
1070 | (*secfilter)->filter_mask[11]=mac_mask[0]; | |
1071 | ||
5c7c0ca0 | 1072 | netdev_dbg(dev, "filter mac=%pM mask=%pM\n", mac, mac_mask); |
1da177e4 LT |
1073 | |
1074 | return 0; | |
1075 | } | |
1076 | ||
1077 | static int dvb_net_feed_start(struct net_device *dev) | |
1078 | { | |
1130ca45 | 1079 | int ret = 0, i; |
0eade1f9 | 1080 | struct dvb_net_priv *priv = netdev_priv(dev); |
afd1a0c9 MCC |
1081 | struct dmx_demux *demux = priv->demux; |
1082 | unsigned char *mac = (unsigned char *) dev->dev_addr; | |
1da177e4 | 1083 | |
5c7c0ca0 | 1084 | netdev_dbg(dev, "rx_mode %i\n", priv->rx_mode); |
3593cab5 | 1085 | mutex_lock(&priv->mutex); |
1da177e4 | 1086 | if (priv->tsfeed || priv->secfeed || priv->secfilter || priv->multi_secfilter[0]) |
b3ad24d2 | 1087 | pr_err("%s: BUG %d\n", __func__, __LINE__); |
1da177e4 LT |
1088 | |
1089 | priv->secfeed=NULL; | |
1090 | priv->secfilter=NULL; | |
1091 | priv->tsfeed = NULL; | |
1092 | ||
1093 | if (priv->feedtype == DVB_NET_FEEDTYPE_MPE) { | |
5c7c0ca0 | 1094 | netdev_dbg(dev, "alloc secfeed\n"); |
1da177e4 LT |
1095 | ret=demux->allocate_section_feed(demux, &priv->secfeed, |
1096 | dvb_net_sec_callback); | |
1097 | if (ret<0) { | |
b3ad24d2 MCC |
1098 | pr_err("%s: could not allocate section feed\n", |
1099 | dev->name); | |
1130ca45 | 1100 | goto error; |
1da177e4 LT |
1101 | } |
1102 | ||
dd79d27e | 1103 | ret = priv->secfeed->set(priv->secfeed, priv->pid, 1); |
1da177e4 LT |
1104 | |
1105 | if (ret<0) { | |
b3ad24d2 | 1106 | pr_err("%s: could not set section feed\n", dev->name); |
1da177e4 LT |
1107 | priv->demux->release_section_feed(priv->demux, priv->secfeed); |
1108 | priv->secfeed=NULL; | |
1130ca45 | 1109 | goto error; |
1da177e4 LT |
1110 | } |
1111 | ||
1112 | if (priv->rx_mode != RX_MODE_PROMISC) { | |
5c7c0ca0 | 1113 | netdev_dbg(dev, "set secfilter\n"); |
1da177e4 LT |
1114 | dvb_net_filter_sec_set(dev, &priv->secfilter, mac, mask_normal); |
1115 | } | |
1116 | ||
1117 | switch (priv->rx_mode) { | |
1118 | case RX_MODE_MULTI: | |
1119 | for (i = 0; i < priv->multi_num; i++) { | |
5c7c0ca0 | 1120 | netdev_dbg(dev, "set multi_secfilter[%d]\n", i); |
1da177e4 LT |
1121 | dvb_net_filter_sec_set(dev, &priv->multi_secfilter[i], |
1122 | priv->multi_macs[i], mask_normal); | |
1123 | } | |
1124 | break; | |
1125 | case RX_MODE_ALL_MULTI: | |
1126 | priv->multi_num=1; | |
5c7c0ca0 | 1127 | netdev_dbg(dev, "set multi_secfilter[0]\n"); |
1da177e4 LT |
1128 | dvb_net_filter_sec_set(dev, &priv->multi_secfilter[0], |
1129 | mac_allmulti, mask_allmulti); | |
1130 | break; | |
1131 | case RX_MODE_PROMISC: | |
1132 | priv->multi_num=0; | |
5c7c0ca0 | 1133 | netdev_dbg(dev, "set secfilter\n"); |
1da177e4 LT |
1134 | dvb_net_filter_sec_set(dev, &priv->secfilter, mac, mask_promisc); |
1135 | break; | |
1136 | } | |
1137 | ||
5c7c0ca0 | 1138 | netdev_dbg(dev, "start filtering\n"); |
1da177e4 LT |
1139 | priv->secfeed->start_filtering(priv->secfeed); |
1140 | } else if (priv->feedtype == DVB_NET_FEEDTYPE_ULE) { | |
e95be158 | 1141 | ktime_t timeout = ns_to_ktime(10 * NSEC_PER_MSEC); |
1da177e4 LT |
1142 | |
1143 | /* we have payloads encapsulated in TS */ | |
5c7c0ca0 | 1144 | netdev_dbg(dev, "alloc tsfeed\n"); |
1da177e4 LT |
1145 | ret = demux->allocate_ts_feed(demux, &priv->tsfeed, dvb_net_ts_callback); |
1146 | if (ret < 0) { | |
b3ad24d2 | 1147 | pr_err("%s: could not allocate ts feed\n", dev->name); |
1130ca45 | 1148 | goto error; |
1da177e4 LT |
1149 | } |
1150 | ||
1151 | /* Set netdevice pointer for ts decaps callback. */ | |
1152 | priv->tsfeed->priv = (void *)dev; | |
18232ca6 CP |
1153 | ret = priv->tsfeed->set(priv->tsfeed, |
1154 | priv->pid, /* pid */ | |
1155 | TS_PACKET, /* type */ | |
fde04ab9 | 1156 | DMX_PES_OTHER, /* pes type */ |
18232ca6 CP |
1157 | timeout /* timeout */ |
1158 | ); | |
1da177e4 LT |
1159 | |
1160 | if (ret < 0) { | |
b3ad24d2 | 1161 | pr_err("%s: could not set ts feed\n", dev->name); |
1da177e4 LT |
1162 | priv->demux->release_ts_feed(priv->demux, priv->tsfeed); |
1163 | priv->tsfeed = NULL; | |
1130ca45 | 1164 | goto error; |
1da177e4 LT |
1165 | } |
1166 | ||
5c7c0ca0 | 1167 | netdev_dbg(dev, "start filtering\n"); |
1da177e4 LT |
1168 | priv->tsfeed->start_filtering(priv->tsfeed); |
1169 | } else | |
1130ca45 | 1170 | ret = -EINVAL; |
1da177e4 | 1171 | |
1130ca45 | 1172 | error: |
3593cab5 | 1173 | mutex_unlock(&priv->mutex); |
1130ca45 | 1174 | return ret; |
1da177e4 LT |
1175 | } |
1176 | ||
1177 | static int dvb_net_feed_stop(struct net_device *dev) | |
1178 | { | |
0eade1f9 | 1179 | struct dvb_net_priv *priv = netdev_priv(dev); |
1130ca45 | 1180 | int i, ret = 0; |
1da177e4 | 1181 | |
3593cab5 | 1182 | mutex_lock(&priv->mutex); |
1da177e4 LT |
1183 | if (priv->feedtype == DVB_NET_FEEDTYPE_MPE) { |
1184 | if (priv->secfeed) { | |
1185 | if (priv->secfeed->is_filtering) { | |
5c7c0ca0 | 1186 | netdev_dbg(dev, "stop secfeed\n"); |
1da177e4 LT |
1187 | priv->secfeed->stop_filtering(priv->secfeed); |
1188 | } | |
1189 | ||
1190 | if (priv->secfilter) { | |
5c7c0ca0 | 1191 | netdev_dbg(dev, "release secfilter\n"); |
1da177e4 LT |
1192 | priv->secfeed->release_filter(priv->secfeed, |
1193 | priv->secfilter); | |
1194 | priv->secfilter=NULL; | |
1195 | } | |
1196 | ||
1197 | for (i=0; i<priv->multi_num; i++) { | |
1198 | if (priv->multi_secfilter[i]) { | |
5c7c0ca0 JP |
1199 | netdev_dbg(dev, "release multi_filter[%d]\n", |
1200 | i); | |
1da177e4 LT |
1201 | priv->secfeed->release_filter(priv->secfeed, |
1202 | priv->multi_secfilter[i]); | |
1203 | priv->multi_secfilter[i] = NULL; | |
1204 | } | |
1205 | } | |
1206 | ||
1207 | priv->demux->release_section_feed(priv->demux, priv->secfeed); | |
1208 | priv->secfeed = NULL; | |
1209 | } else | |
b3ad24d2 | 1210 | pr_err("%s: no feed to stop\n", dev->name); |
1da177e4 LT |
1211 | } else if (priv->feedtype == DVB_NET_FEEDTYPE_ULE) { |
1212 | if (priv->tsfeed) { | |
1213 | if (priv->tsfeed->is_filtering) { | |
5c7c0ca0 | 1214 | netdev_dbg(dev, "stop tsfeed\n"); |
1da177e4 LT |
1215 | priv->tsfeed->stop_filtering(priv->tsfeed); |
1216 | } | |
1217 | priv->demux->release_ts_feed(priv->demux, priv->tsfeed); | |
1218 | priv->tsfeed = NULL; | |
1219 | } | |
1220 | else | |
b3ad24d2 | 1221 | pr_err("%s: no ts feed to stop\n", dev->name); |
1da177e4 | 1222 | } else |
1130ca45 | 1223 | ret = -EINVAL; |
3593cab5 | 1224 | mutex_unlock(&priv->mutex); |
1130ca45 | 1225 | return ret; |
1da177e4 LT |
1226 | } |
1227 | ||
1228 | ||
22bedad3 | 1229 | static int dvb_set_mc_filter(struct net_device *dev, unsigned char *addr) |
1da177e4 | 1230 | { |
0eade1f9 | 1231 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1232 | |
1233 | if (priv->multi_num == DVB_NET_MULTICAST_MAX) | |
1234 | return -ENOMEM; | |
1235 | ||
22bedad3 | 1236 | memcpy(priv->multi_macs[priv->multi_num], addr, ETH_ALEN); |
1da177e4 LT |
1237 | |
1238 | priv->multi_num++; | |
1239 | return 0; | |
1240 | } | |
1241 | ||
1242 | ||
c4028958 | 1243 | static void wq_set_multicast_list (struct work_struct *work) |
1da177e4 | 1244 | { |
c4028958 DH |
1245 | struct dvb_net_priv *priv = |
1246 | container_of(work, struct dvb_net_priv, set_multicast_list_wq); | |
1247 | struct net_device *dev = priv->net; | |
1da177e4 LT |
1248 | |
1249 | dvb_net_feed_stop(dev); | |
1da177e4 | 1250 | priv->rx_mode = RX_MODE_UNI; |
b9e40857 | 1251 | netif_addr_lock_bh(dev); |
1da177e4 LT |
1252 | |
1253 | if (dev->flags & IFF_PROMISC) { | |
5c7c0ca0 | 1254 | netdev_dbg(dev, "promiscuous mode\n"); |
1da177e4 LT |
1255 | priv->rx_mode = RX_MODE_PROMISC; |
1256 | } else if ((dev->flags & IFF_ALLMULTI)) { | |
5c7c0ca0 | 1257 | netdev_dbg(dev, "allmulti mode\n"); |
1da177e4 | 1258 | priv->rx_mode = RX_MODE_ALL_MULTI; |
4cd24eaf | 1259 | } else if (!netdev_mc_empty(dev)) { |
22bedad3 | 1260 | struct netdev_hw_addr *ha; |
1da177e4 | 1261 | |
5c7c0ca0 JP |
1262 | netdev_dbg(dev, "set_mc_list, %d entries\n", |
1263 | netdev_mc_count(dev)); | |
1da177e4 LT |
1264 | |
1265 | priv->rx_mode = RX_MODE_MULTI; | |
1266 | priv->multi_num = 0; | |
1267 | ||
22bedad3 JP |
1268 | netdev_for_each_mc_addr(ha, dev) |
1269 | dvb_set_mc_filter(dev, ha->addr); | |
1da177e4 LT |
1270 | } |
1271 | ||
b9e40857 | 1272 | netif_addr_unlock_bh(dev); |
1da177e4 LT |
1273 | dvb_net_feed_start(dev); |
1274 | } | |
1275 | ||
1276 | ||
1277 | static void dvb_net_set_multicast_list (struct net_device *dev) | |
1278 | { | |
0eade1f9 | 1279 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1280 | schedule_work(&priv->set_multicast_list_wq); |
1281 | } | |
1282 | ||
1283 | ||
c4028958 | 1284 | static void wq_restart_net_feed (struct work_struct *work) |
1da177e4 | 1285 | { |
c4028958 DH |
1286 | struct dvb_net_priv *priv = |
1287 | container_of(work, struct dvb_net_priv, restart_net_feed_wq); | |
1288 | struct net_device *dev = priv->net; | |
1da177e4 LT |
1289 | |
1290 | if (netif_running(dev)) { | |
1291 | dvb_net_feed_stop(dev); | |
1292 | dvb_net_feed_start(dev); | |
1293 | } | |
1294 | } | |
1295 | ||
1296 | ||
1297 | static int dvb_net_set_mac (struct net_device *dev, void *p) | |
1298 | { | |
0eade1f9 | 1299 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1300 | struct sockaddr *addr=p; |
1301 | ||
1302 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | |
1303 | ||
1304 | if (netif_running(dev)) | |
1305 | schedule_work(&priv->restart_net_feed_wq); | |
1306 | ||
1307 | return 0; | |
1308 | } | |
1309 | ||
1310 | ||
1311 | static int dvb_net_open(struct net_device *dev) | |
1312 | { | |
0eade1f9 | 1313 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1314 | |
1315 | priv->in_use++; | |
1316 | dvb_net_feed_start(dev); | |
1317 | return 0; | |
1318 | } | |
1319 | ||
1320 | ||
1321 | static int dvb_net_stop(struct net_device *dev) | |
1322 | { | |
0eade1f9 | 1323 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1324 | |
1325 | priv->in_use--; | |
afd1a0c9 | 1326 | return dvb_net_feed_stop(dev); |
1da177e4 LT |
1327 | } |
1328 | ||
3b04ddde SH |
1329 | static const struct header_ops dvb_header_ops = { |
1330 | .create = eth_header, | |
1331 | .parse = eth_header_parse, | |
3b04ddde SH |
1332 | }; |
1333 | ||
fb875333 SH |
1334 | |
1335 | static const struct net_device_ops dvb_netdev_ops = { | |
1336 | .ndo_open = dvb_net_open, | |
1337 | .ndo_stop = dvb_net_stop, | |
1338 | .ndo_start_xmit = dvb_net_tx, | |
afc4b13d | 1339 | .ndo_set_rx_mode = dvb_net_set_multicast_list, |
fb875333 | 1340 | .ndo_set_mac_address = dvb_net_set_mac, |
fb875333 SH |
1341 | .ndo_validate_addr = eth_validate_addr, |
1342 | }; | |
1343 | ||
1da177e4 LT |
1344 | static void dvb_net_setup(struct net_device *dev) |
1345 | { | |
1346 | ether_setup(dev); | |
1347 | ||
3b04ddde | 1348 | dev->header_ops = &dvb_header_ops; |
fb875333 | 1349 | dev->netdev_ops = &dvb_netdev_ops; |
1da177e4 | 1350 | dev->mtu = 4096; |
a52ad514 | 1351 | dev->max_mtu = 4096; |
3b04ddde | 1352 | |
1da177e4 LT |
1353 | dev->flags |= IFF_NOARP; |
1354 | } | |
1355 | ||
1356 | static int get_if(struct dvb_net *dvbnet) | |
1357 | { | |
1358 | int i; | |
1359 | ||
1360 | for (i=0; i<DVB_NET_DEVICES_MAX; i++) | |
1361 | if (!dvbnet->state[i]) | |
1362 | break; | |
1363 | ||
1364 | if (i == DVB_NET_DEVICES_MAX) | |
1365 | return -1; | |
1366 | ||
1367 | dvbnet->state[i]=1; | |
1368 | return i; | |
1369 | } | |
1370 | ||
1371 | static int dvb_net_add_if(struct dvb_net *dvbnet, u16 pid, u8 feedtype) | |
1372 | { | |
1373 | struct net_device *net; | |
1374 | struct dvb_net_priv *priv; | |
1375 | int result; | |
1376 | int if_num; | |
1377 | ||
1378 | if (feedtype != DVB_NET_FEEDTYPE_MPE && feedtype != DVB_NET_FEEDTYPE_ULE) | |
1379 | return -EINVAL; | |
1380 | if ((if_num = get_if(dvbnet)) < 0) | |
1381 | return -EINVAL; | |
1382 | ||
c835a677 TG |
1383 | net = alloc_netdev(sizeof(struct dvb_net_priv), "dvb", |
1384 | NET_NAME_UNKNOWN, dvb_net_setup); | |
1da177e4 LT |
1385 | if (!net) |
1386 | return -ENOMEM; | |
1387 | ||
1388 | if (dvbnet->dvbdev->id) | |
1389 | snprintf(net->name, IFNAMSIZ, "dvb%d%u%d", | |
1390 | dvbnet->dvbdev->adapter->num, dvbnet->dvbdev->id, if_num); | |
1391 | else | |
1392 | /* compatibility fix to keep dvb0_0 format */ | |
1393 | snprintf(net->name, IFNAMSIZ, "dvb%d_%d", | |
1394 | dvbnet->dvbdev->adapter->num, if_num); | |
1395 | ||
1396 | net->addr_len = 6; | |
1397 | memcpy(net->dev_addr, dvbnet->dvbdev->adapter->proposed_mac, 6); | |
1398 | ||
1399 | dvbnet->device[if_num] = net; | |
1400 | ||
0eade1f9 | 1401 | priv = netdev_priv(net); |
c4028958 | 1402 | priv->net = net; |
1da177e4 LT |
1403 | priv->demux = dvbnet->demux; |
1404 | priv->pid = pid; | |
1405 | priv->rx_mode = RX_MODE_UNI; | |
1406 | priv->need_pusi = 1; | |
1407 | priv->tscc = 0; | |
1408 | priv->feedtype = feedtype; | |
1409 | reset_ule(priv); | |
1410 | ||
c4028958 DH |
1411 | INIT_WORK(&priv->set_multicast_list_wq, wq_set_multicast_list); |
1412 | INIT_WORK(&priv->restart_net_feed_wq, wq_restart_net_feed); | |
3593cab5 | 1413 | mutex_init(&priv->mutex); |
1da177e4 LT |
1414 | |
1415 | net->base_addr = pid; | |
1416 | ||
1417 | if ((result = register_netdev(net)) < 0) { | |
1418 | dvbnet->device[if_num] = NULL; | |
1419 | free_netdev(net); | |
1420 | return result; | |
1421 | } | |
b3ad24d2 | 1422 | pr_info("created network interface %s\n", net->name); |
1da177e4 LT |
1423 | |
1424 | return if_num; | |
1425 | } | |
1426 | ||
400b7083 | 1427 | static int dvb_net_remove_if(struct dvb_net *dvbnet, unsigned long num) |
1da177e4 LT |
1428 | { |
1429 | struct net_device *net = dvbnet->device[num]; | |
1430 | struct dvb_net_priv *priv; | |
1431 | ||
1432 | if (!dvbnet->state[num]) | |
1433 | return -EINVAL; | |
0eade1f9 | 1434 | priv = netdev_priv(net); |
1da177e4 LT |
1435 | if (priv->in_use) |
1436 | return -EBUSY; | |
1437 | ||
1438 | dvb_net_stop(net); | |
43829731 TH |
1439 | flush_work(&priv->set_multicast_list_wq); |
1440 | flush_work(&priv->restart_net_feed_wq); | |
b3ad24d2 | 1441 | pr_info("removed network interface %s\n", net->name); |
1da177e4 LT |
1442 | unregister_netdev(net); |
1443 | dvbnet->state[num]=0; | |
1444 | dvbnet->device[num] = NULL; | |
1445 | free_netdev(net); | |
1446 | ||
1447 | return 0; | |
1448 | } | |
1449 | ||
16ef8def | 1450 | static int dvb_net_do_ioctl(struct file *file, |
1da177e4 LT |
1451 | unsigned int cmd, void *parg) |
1452 | { | |
0c53c70f JS |
1453 | struct dvb_device *dvbdev = file->private_data; |
1454 | struct dvb_net *dvbnet = dvbdev->priv; | |
30ad64b8 | 1455 | int ret = 0; |
1da177e4 LT |
1456 | |
1457 | if (((file->f_flags&O_ACCMODE)==O_RDONLY)) | |
1458 | return -EPERM; | |
1459 | ||
30ad64b8 NS |
1460 | if (mutex_lock_interruptible(&dvbnet->ioctl_mutex)) |
1461 | return -ERESTARTSYS; | |
1462 | ||
1da177e4 LT |
1463 | switch (cmd) { |
1464 | case NET_ADD_IF: | |
1465 | { | |
0c53c70f | 1466 | struct dvb_net_if *dvbnetif = parg; |
1da177e4 LT |
1467 | int result; |
1468 | ||
30ad64b8 NS |
1469 | if (!capable(CAP_SYS_ADMIN)) { |
1470 | ret = -EPERM; | |
1471 | goto ioctl_error; | |
1472 | } | |
1da177e4 | 1473 | |
30ad64b8 NS |
1474 | if (!try_module_get(dvbdev->adapter->module)) { |
1475 | ret = -EPERM; | |
1476 | goto ioctl_error; | |
1477 | } | |
1da177e4 LT |
1478 | |
1479 | result=dvb_net_add_if(dvbnet, dvbnetif->pid, dvbnetif->feedtype); | |
1480 | if (result<0) { | |
1481 | module_put(dvbdev->adapter->module); | |
30ad64b8 NS |
1482 | ret = result; |
1483 | goto ioctl_error; | |
1da177e4 LT |
1484 | } |
1485 | dvbnetif->if_num=result; | |
1486 | break; | |
1487 | } | |
1488 | case NET_GET_IF: | |
1489 | { | |
1490 | struct net_device *netdev; | |
1491 | struct dvb_net_priv *priv_data; | |
0c53c70f | 1492 | struct dvb_net_if *dvbnetif = parg; |
1da177e4 LT |
1493 | |
1494 | if (dvbnetif->if_num >= DVB_NET_DEVICES_MAX || | |
30ad64b8 NS |
1495 | !dvbnet->state[dvbnetif->if_num]) { |
1496 | ret = -EINVAL; | |
1497 | goto ioctl_error; | |
1498 | } | |
1da177e4 LT |
1499 | |
1500 | netdev = dvbnet->device[dvbnetif->if_num]; | |
1501 | ||
0eade1f9 | 1502 | priv_data = netdev_priv(netdev); |
1da177e4 LT |
1503 | dvbnetif->pid=priv_data->pid; |
1504 | dvbnetif->feedtype=priv_data->feedtype; | |
1505 | break; | |
1506 | } | |
1507 | case NET_REMOVE_IF: | |
1508 | { | |
30ad64b8 NS |
1509 | if (!capable(CAP_SYS_ADMIN)) { |
1510 | ret = -EPERM; | |
1511 | goto ioctl_error; | |
1512 | } | |
1513 | if ((unsigned long) parg >= DVB_NET_DEVICES_MAX) { | |
1514 | ret = -EINVAL; | |
1515 | goto ioctl_error; | |
1516 | } | |
e18828e4 | 1517 | ret = dvb_net_remove_if(dvbnet, (unsigned long) parg); |
1da177e4 LT |
1518 | if (!ret) |
1519 | module_put(dvbdev->adapter->module); | |
30ad64b8 | 1520 | break; |
1da177e4 LT |
1521 | } |
1522 | ||
06fe9fb4 | 1523 | /* binary compatibility cruft */ |
1da177e4 LT |
1524 | case __NET_ADD_IF_OLD: |
1525 | { | |
0c53c70f | 1526 | struct __dvb_net_if_old *dvbnetif = parg; |
1da177e4 LT |
1527 | int result; |
1528 | ||
30ad64b8 NS |
1529 | if (!capable(CAP_SYS_ADMIN)) { |
1530 | ret = -EPERM; | |
1531 | goto ioctl_error; | |
1532 | } | |
1da177e4 | 1533 | |
30ad64b8 NS |
1534 | if (!try_module_get(dvbdev->adapter->module)) { |
1535 | ret = -EPERM; | |
1536 | goto ioctl_error; | |
1537 | } | |
1da177e4 LT |
1538 | |
1539 | result=dvb_net_add_if(dvbnet, dvbnetif->pid, DVB_NET_FEEDTYPE_MPE); | |
1540 | if (result<0) { | |
1541 | module_put(dvbdev->adapter->module); | |
30ad64b8 NS |
1542 | ret = result; |
1543 | goto ioctl_error; | |
1da177e4 LT |
1544 | } |
1545 | dvbnetif->if_num=result; | |
1546 | break; | |
1547 | } | |
1548 | case __NET_GET_IF_OLD: | |
1549 | { | |
1550 | struct net_device *netdev; | |
1551 | struct dvb_net_priv *priv_data; | |
0c53c70f | 1552 | struct __dvb_net_if_old *dvbnetif = parg; |
1da177e4 LT |
1553 | |
1554 | if (dvbnetif->if_num >= DVB_NET_DEVICES_MAX || | |
30ad64b8 NS |
1555 | !dvbnet->state[dvbnetif->if_num]) { |
1556 | ret = -EINVAL; | |
1557 | goto ioctl_error; | |
1558 | } | |
1da177e4 LT |
1559 | |
1560 | netdev = dvbnet->device[dvbnetif->if_num]; | |
1561 | ||
0eade1f9 | 1562 | priv_data = netdev_priv(netdev); |
1da177e4 LT |
1563 | dvbnetif->pid=priv_data->pid; |
1564 | break; | |
1565 | } | |
1566 | default: | |
30ad64b8 NS |
1567 | ret = -ENOTTY; |
1568 | break; | |
1da177e4 | 1569 | } |
30ad64b8 NS |
1570 | |
1571 | ioctl_error: | |
1572 | mutex_unlock(&dvbnet->ioctl_mutex); | |
1573 | return ret; | |
1da177e4 LT |
1574 | } |
1575 | ||
16ef8def | 1576 | static long dvb_net_ioctl(struct file *file, |
1da177e4 LT |
1577 | unsigned int cmd, unsigned long arg) |
1578 | { | |
72024f1e | 1579 | return dvb_usercopy(file, cmd, arg, dvb_net_do_ioctl); |
1da177e4 LT |
1580 | } |
1581 | ||
2c4d3364 MR |
1582 | static int dvb_net_close(struct inode *inode, struct file *file) |
1583 | { | |
1584 | struct dvb_device *dvbdev = file->private_data; | |
1585 | struct dvb_net *dvbnet = dvbdev->priv; | |
1586 | ||
82e67246 | 1587 | dvb_generic_release(inode, file); |
2c4d3364 | 1588 | |
7caf2184 | 1589 | if(dvbdev->users == 1 && dvbnet->exit == 1) |
2c4d3364 | 1590 | wake_up(&dvbdev->wait_queue); |
2c4d3364 MR |
1591 | return 0; |
1592 | } | |
1593 | ||
1594 | ||
784e29d2 | 1595 | static const struct file_operations dvb_net_fops = { |
1da177e4 | 1596 | .owner = THIS_MODULE, |
16ef8def | 1597 | .unlocked_ioctl = dvb_net_ioctl, |
1da177e4 | 1598 | .open = dvb_generic_open, |
2c4d3364 | 1599 | .release = dvb_net_close, |
6038f373 | 1600 | .llseek = noop_llseek, |
1da177e4 LT |
1601 | }; |
1602 | ||
e3d65c33 | 1603 | static const struct dvb_device dvbdev_net = { |
afd1a0c9 MCC |
1604 | .priv = NULL, |
1605 | .users = 1, | |
1606 | .writers = 1, | |
e3d65c33 | 1607 | #if defined(CONFIG_MEDIA_CONTROLLER_DVB) |
e4fd3bc5 | 1608 | .name = "dvb-net", |
e3d65c33 | 1609 | #endif |
afd1a0c9 | 1610 | .fops = &dvb_net_fops, |
1da177e4 LT |
1611 | }; |
1612 | ||
1da177e4 LT |
1613 | void dvb_net_release (struct dvb_net *dvbnet) |
1614 | { | |
1615 | int i; | |
1616 | ||
2c4d3364 MR |
1617 | dvbnet->exit = 1; |
1618 | if (dvbnet->dvbdev->users < 1) | |
1619 | wait_event(dvbnet->dvbdev->wait_queue, | |
1620 | dvbnet->dvbdev->users==1); | |
1621 | ||
1da177e4 LT |
1622 | dvb_unregister_device(dvbnet->dvbdev); |
1623 | ||
1624 | for (i=0; i<DVB_NET_DEVICES_MAX; i++) { | |
1625 | if (!dvbnet->state[i]) | |
1626 | continue; | |
1627 | dvb_net_remove_if(dvbnet, i); | |
1628 | } | |
1629 | } | |
1630 | EXPORT_SYMBOL(dvb_net_release); | |
1631 | ||
1632 | ||
1633 | int dvb_net_init (struct dvb_adapter *adap, struct dvb_net *dvbnet, | |
1634 | struct dmx_demux *dmx) | |
1635 | { | |
1636 | int i; | |
1637 | ||
30ad64b8 | 1638 | mutex_init(&dvbnet->ioctl_mutex); |
1da177e4 LT |
1639 | dvbnet->demux = dmx; |
1640 | ||
1641 | for (i=0; i<DVB_NET_DEVICES_MAX; i++) | |
1642 | dvbnet->state[i] = 0; | |
1643 | ||
58fae673 | 1644 | return dvb_register_device(adap, &dvbnet->dvbdev, &dvbdev_net, |
df2f94e5 | 1645 | dvbnet, DVB_DEVICE_NET, 0); |
1da177e4 LT |
1646 | } |
1647 | EXPORT_SYMBOL(dvb_net_init); |