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1da177e4 LT |
1 | /* |
2 | * dvb_net.c | |
3 | * | |
4 | * Copyright (C) 2001 Convergence integrated media GmbH | |
5 | * Ralph Metzler <ralph@convergence.de> | |
6 | * Copyright (C) 2002 Ralph Metzler <rjkm@metzlerbros.de> | |
7 | * | |
8 | * ULE Decapsulation code: | |
9 | * Copyright (C) 2003, 2004 gcs - Global Communication & Services GmbH. | |
10 | * and Department of Scientific Computing | |
11 | * Paris Lodron University of Salzburg. | |
12 | * Hilmar Linder <hlinder@cosy.sbg.ac.at> | |
13 | * and Wolfram Stering <wstering@cosy.sbg.ac.at> | |
14 | * | |
18232ca6 | 15 | * ULE Decaps according to RFC 4326. |
1da177e4 LT |
16 | * |
17 | * This program is free software; you can redistribute it and/or | |
18 | * modify it under the terms of the GNU General Public License | |
19 | * as published by the Free Software Foundation; either version 2 | |
20 | * of the License, or (at your option) any later version. | |
21 | * | |
22 | * This program is distributed in the hope that it will be useful, | |
23 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
25 | * GNU General Public License for more details. | |
26 | * | |
27 | * You should have received a copy of the GNU General Public License | |
28 | * along with this program; if not, write to the Free Software | |
29 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
30 | * Or, point your browser to http://www.gnu.org/copyleft/gpl.html | |
31 | */ | |
32 | ||
33 | /* | |
34 | * ULE ChangeLog: | |
35 | * Feb 2004: hl/ws v1: Implementing draft-fair-ipdvb-ule-01.txt | |
36 | * | |
37 | * Dec 2004: hl/ws v2: Implementing draft-ietf-ipdvb-ule-03.txt: | |
38 | * ULE Extension header handling. | |
39 | * Bugreports by Moritz Vieth and Hanno Tersteegen, | |
40 | * Fraunhofer Institute for Open Communication Systems | |
41 | * Competence Center for Advanced Satellite Communications. | |
42 | * Bugfixes and robustness improvements. | |
43 | * Filtering on dest MAC addresses, if present (D-Bit = 0) | |
44 | * ULE_DEBUG compile-time option. | |
18232ca6 CP |
45 | * Apr 2006: cp v3: Bugfixes and compliency with RFC 4326 (ULE) by |
46 | * Christian Praehauser <cpraehaus@cosy.sbg.ac.at>, | |
47 | * Paris Lodron University of Salzburg. | |
1da177e4 LT |
48 | */ |
49 | ||
50 | /* | |
51 | * FIXME / TODO (dvb_net.c): | |
52 | * | |
53 | * Unloading does not work for 2.6.9 kernels: a refcount doesn't go to zero. | |
54 | * | |
1da177e4 LT |
55 | */ |
56 | ||
57 | #include <linux/module.h> | |
58 | #include <linux/kernel.h> | |
59 | #include <linux/netdevice.h> | |
60 | #include <linux/etherdevice.h> | |
61 | #include <linux/dvb/net.h> | |
62 | #include <linux/uio.h> | |
63 | #include <asm/uaccess.h> | |
64 | #include <linux/crc32.h> | |
3593cab5 | 65 | #include <linux/mutex.h> |
d43c36dc | 66 | #include <linux/sched.h> |
1da177e4 LT |
67 | |
68 | #include "dvb_demux.h" | |
69 | #include "dvb_net.h" | |
70 | ||
71 | static int dvb_net_debug; | |
72 | module_param(dvb_net_debug, int, 0444); | |
73 | MODULE_PARM_DESC(dvb_net_debug, "enable debug messages"); | |
74 | ||
75 | #define dprintk(x...) do { if (dvb_net_debug) printk(x); } while (0) | |
76 | ||
77 | ||
78 | static inline __u32 iov_crc32( __u32 c, struct kvec *iov, unsigned int cnt ) | |
79 | { | |
80 | unsigned int j; | |
81 | for (j = 0; j < cnt; j++) | |
82 | c = crc32_be( c, iov[j].iov_base, iov[j].iov_len ); | |
83 | return c; | |
84 | } | |
85 | ||
86 | ||
87 | #define DVB_NET_MULTICAST_MAX 10 | |
88 | ||
89 | #undef ULE_DEBUG | |
90 | ||
91 | #ifdef ULE_DEBUG | |
92 | ||
18232ca6 CP |
93 | #define MAC_ADDR_PRINTFMT "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x" |
94 | #define MAX_ADDR_PRINTFMT_ARGS(macap) (macap)[0],(macap)[1],(macap)[2],(macap)[3],(macap)[4],(macap)[5] | |
95 | ||
1da177e4 LT |
96 | #define isprint(c) ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9')) |
97 | ||
98 | static void hexdump( const unsigned char *buf, unsigned short len ) | |
99 | { | |
100 | char str[80], octet[10]; | |
101 | int ofs, i, l; | |
102 | ||
103 | for (ofs = 0; ofs < len; ofs += 16) { | |
104 | sprintf( str, "%03d: ", ofs ); | |
105 | ||
106 | for (i = 0; i < 16; i++) { | |
107 | if ((i + ofs) < len) | |
108 | sprintf( octet, "%02x ", buf[ofs + i] ); | |
109 | else | |
110 | strcpy( octet, " " ); | |
111 | ||
112 | strcat( str, octet ); | |
113 | } | |
114 | strcat( str, " " ); | |
115 | l = strlen( str ); | |
116 | ||
117 | for (i = 0; (i < 16) && ((i + ofs) < len); i++) | |
118 | str[l++] = isprint( buf[ofs + i] ) ? buf[ofs + i] : '.'; | |
119 | ||
120 | str[l] = '\0'; | |
121 | printk( KERN_WARNING "%s\n", str ); | |
122 | } | |
123 | } | |
124 | ||
125 | #endif | |
126 | ||
127 | struct dvb_net_priv { | |
128 | int in_use; | |
1da177e4 | 129 | u16 pid; |
c4028958 | 130 | struct net_device *net; |
1da177e4 LT |
131 | struct dvb_net *host; |
132 | struct dmx_demux *demux; | |
133 | struct dmx_section_feed *secfeed; | |
134 | struct dmx_section_filter *secfilter; | |
135 | struct dmx_ts_feed *tsfeed; | |
136 | int multi_num; | |
137 | struct dmx_section_filter *multi_secfilter[DVB_NET_MULTICAST_MAX]; | |
138 | unsigned char multi_macs[DVB_NET_MULTICAST_MAX][6]; | |
139 | int rx_mode; | |
140 | #define RX_MODE_UNI 0 | |
141 | #define RX_MODE_MULTI 1 | |
142 | #define RX_MODE_ALL_MULTI 2 | |
143 | #define RX_MODE_PROMISC 3 | |
144 | struct work_struct set_multicast_list_wq; | |
145 | struct work_struct restart_net_feed_wq; | |
146 | unsigned char feedtype; /* Either FEED_TYPE_ or FEED_TYPE_ULE */ | |
147 | int need_pusi; /* Set to 1, if synchronization on PUSI required. */ | |
148 | unsigned char tscc; /* TS continuity counter after sync on PUSI. */ | |
149 | struct sk_buff *ule_skb; /* ULE SNDU decodes into this buffer. */ | |
150 | unsigned char *ule_next_hdr; /* Pointer into skb to next ULE extension header. */ | |
151 | unsigned short ule_sndu_len; /* ULE SNDU length in bytes, w/o D-Bit. */ | |
152 | unsigned short ule_sndu_type; /* ULE SNDU type field, complete. */ | |
153 | unsigned char ule_sndu_type_1; /* ULE SNDU type field, if split across 2 TS cells. */ | |
154 | unsigned char ule_dbit; /* Whether the DestMAC address present | |
155 | * or not (bit is set). */ | |
156 | unsigned char ule_bridged; /* Whether the ULE_BRIDGED extension header was found. */ | |
157 | int ule_sndu_remain; /* Nr. of bytes still required for current ULE SNDU. */ | |
158 | unsigned long ts_count; /* Current ts cell counter. */ | |
3593cab5 | 159 | struct mutex mutex; |
1da177e4 LT |
160 | }; |
161 | ||
162 | ||
163 | /** | |
164 | * Determine the packet's protocol ID. The rule here is that we | |
165 | * assume 802.3 if the type field is short enough to be a length. | |
166 | * This is normal practice and works for any 'now in use' protocol. | |
167 | * | |
168 | * stolen from eth.c out of the linux kernel, hacked for dvb-device | |
169 | * by Michael Holzt <kju@debian.org> | |
170 | */ | |
12fbcef1 | 171 | static __be16 dvb_net_eth_type_trans(struct sk_buff *skb, |
1da177e4 LT |
172 | struct net_device *dev) |
173 | { | |
174 | struct ethhdr *eth; | |
175 | unsigned char *rawp; | |
176 | ||
98e399f8 | 177 | skb_reset_mac_header(skb); |
1da177e4 | 178 | skb_pull(skb,dev->hard_header_len); |
1da177e4 | 179 | eth = eth_hdr(skb); |
1da177e4 LT |
180 | |
181 | if (*eth->h_dest & 1) { | |
5e231c2c | 182 | if(ether_addr_equal(eth->h_dest,dev->broadcast)) |
1da177e4 LT |
183 | skb->pkt_type=PACKET_BROADCAST; |
184 | else | |
185 | skb->pkt_type=PACKET_MULTICAST; | |
186 | } | |
187 | ||
e5c5d22e | 188 | if (ntohs(eth->h_proto) >= ETH_P_802_3_MIN) |
1da177e4 LT |
189 | return eth->h_proto; |
190 | ||
191 | rawp = skb->data; | |
192 | ||
193 | /** | |
194 | * This is a magic hack to spot IPX packets. Older Novell breaks | |
195 | * the protocol design and runs IPX over 802.3 without an 802.2 LLC | |
196 | * layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This | |
197 | * won't work for fault tolerant netware but does for the rest. | |
198 | */ | |
199 | if (*(unsigned short *)rawp == 0xFFFF) | |
200 | return htons(ETH_P_802_3); | |
201 | ||
202 | /** | |
203 | * Real 802.2 LLC | |
204 | */ | |
205 | return htons(ETH_P_802_2); | |
206 | } | |
207 | ||
208 | #define TS_SZ 188 | |
209 | #define TS_SYNC 0x47 | |
210 | #define TS_TEI 0x80 | |
211 | #define TS_SC 0xC0 | |
212 | #define TS_PUSI 0x40 | |
213 | #define TS_AF_A 0x20 | |
214 | #define TS_AF_D 0x10 | |
215 | ||
216 | /* ULE Extension Header handlers. */ | |
217 | ||
218 | #define ULE_TEST 0 | |
219 | #define ULE_BRIDGED 1 | |
220 | ||
18232ca6 CP |
221 | #define ULE_OPTEXTHDR_PADDING 0 |
222 | ||
1da177e4 LT |
223 | static int ule_test_sndu( struct dvb_net_priv *p ) |
224 | { | |
225 | return -1; | |
226 | } | |
227 | ||
228 | static int ule_bridged_sndu( struct dvb_net_priv *p ) | |
229 | { | |
18232ca6 | 230 | struct ethhdr *hdr = (struct ethhdr*) p->ule_next_hdr; |
e5c5d22e | 231 | if(ntohs(hdr->h_proto) < ETH_P_802_3_MIN) { |
18232ca6 | 232 | int framelen = p->ule_sndu_len - ((p->ule_next_hdr+sizeof(struct ethhdr)) - p->ule_skb->data); |
e5c5d22e | 233 | /* A frame Type < ETH_P_802_3_MIN for a bridged frame, introduces a LLC Length field. */ |
18232ca6 CP |
234 | if(framelen != ntohs(hdr->h_proto)) { |
235 | return -1; | |
236 | } | |
237 | } | |
238 | /* Note: | |
239 | * From RFC4326: | |
240 | * "A bridged SNDU is a Mandatory Extension Header of Type 1. | |
241 | * It must be the final (or only) extension header specified in the header chain of a SNDU." | |
242 | * The 'ule_bridged' flag will cause the extension header processing loop to terminate. | |
1da177e4 LT |
243 | */ |
244 | p->ule_bridged = 1; | |
245 | return 0; | |
246 | } | |
247 | ||
18232ca6 CP |
248 | static int ule_exthdr_padding(struct dvb_net_priv *p) |
249 | { | |
250 | return 0; | |
251 | } | |
1da177e4 LT |
252 | |
253 | /** Handle ULE extension headers. | |
254 | * Function is called after a successful CRC32 verification of an ULE SNDU to complete its decoding. | |
255 | * Returns: >= 0: nr. of bytes consumed by next extension header | |
256 | * -1: Mandatory extension header that is not recognized or TEST SNDU; discard. | |
257 | */ | |
258 | static int handle_one_ule_extension( struct dvb_net_priv *p ) | |
259 | { | |
260 | /* Table of mandatory extension header handlers. The header type is the index. */ | |
261 | static int (*ule_mandatory_ext_handlers[255])( struct dvb_net_priv *p ) = | |
262 | { [0] = ule_test_sndu, [1] = ule_bridged_sndu, [2] = NULL, }; | |
263 | ||
264 | /* Table of optional extension header handlers. The header type is the index. */ | |
18232ca6 CP |
265 | static int (*ule_optional_ext_handlers[255])( struct dvb_net_priv *p ) = |
266 | { [0] = ule_exthdr_padding, [1] = NULL, }; | |
1da177e4 LT |
267 | |
268 | int ext_len = 0; | |
269 | unsigned char hlen = (p->ule_sndu_type & 0x0700) >> 8; | |
270 | unsigned char htype = p->ule_sndu_type & 0x00FF; | |
271 | ||
272 | /* Discriminate mandatory and optional extension headers. */ | |
273 | if (hlen == 0) { | |
274 | /* Mandatory extension header */ | |
275 | if (ule_mandatory_ext_handlers[htype]) { | |
276 | ext_len = ule_mandatory_ext_handlers[htype]( p ); | |
18232ca6 CP |
277 | if(ext_len >= 0) { |
278 | p->ule_next_hdr += ext_len; | |
279 | if (!p->ule_bridged) { | |
12fbcef1 | 280 | p->ule_sndu_type = ntohs(*(__be16 *)p->ule_next_hdr); |
18232ca6 CP |
281 | p->ule_next_hdr += 2; |
282 | } else { | |
12fbcef1 | 283 | p->ule_sndu_type = ntohs(*(__be16 *)(p->ule_next_hdr + ((p->ule_dbit ? 2 : 3) * ETH_ALEN))); |
18232ca6 CP |
284 | /* This assures the extension handling loop will terminate. */ |
285 | } | |
1da177e4 | 286 | } |
18232ca6 | 287 | // else: extension handler failed or SNDU should be discarded |
1da177e4 LT |
288 | } else |
289 | ext_len = -1; /* SNDU has to be discarded. */ | |
290 | } else { | |
291 | /* Optional extension header. Calculate the length. */ | |
18232ca6 | 292 | ext_len = hlen << 1; |
1da177e4 LT |
293 | /* Process the optional extension header according to its type. */ |
294 | if (ule_optional_ext_handlers[htype]) | |
295 | (void)ule_optional_ext_handlers[htype]( p ); | |
296 | p->ule_next_hdr += ext_len; | |
12fbcef1 | 297 | p->ule_sndu_type = ntohs( *(__be16 *)(p->ule_next_hdr-2) ); |
18232ca6 CP |
298 | /* |
299 | * note: the length of the next header type is included in the | |
300 | * length of THIS optional extension header | |
301 | */ | |
1da177e4 LT |
302 | } |
303 | ||
304 | return ext_len; | |
305 | } | |
306 | ||
307 | static int handle_ule_extensions( struct dvb_net_priv *p ) | |
308 | { | |
309 | int total_ext_len = 0, l; | |
310 | ||
311 | p->ule_next_hdr = p->ule_skb->data; | |
312 | do { | |
313 | l = handle_one_ule_extension( p ); | |
18232ca6 CP |
314 | if (l < 0) |
315 | return l; /* Stop extension header processing and discard SNDU. */ | |
1da177e4 | 316 | total_ext_len += l; |
18232ca6 CP |
317 | #ifdef ULE_DEBUG |
318 | dprintk("handle_ule_extensions: ule_next_hdr=%p, ule_sndu_type=%i, " | |
319 | "l=%i, total_ext_len=%i\n", p->ule_next_hdr, | |
320 | (int) p->ule_sndu_type, l, total_ext_len); | |
321 | #endif | |
1da177e4 | 322 | |
e5c5d22e | 323 | } while (p->ule_sndu_type < ETH_P_802_3_MIN); |
1da177e4 LT |
324 | |
325 | return total_ext_len; | |
326 | } | |
327 | ||
328 | ||
329 | /** Prepare for a new ULE SNDU: reset the decoder state. */ | |
330 | static inline void reset_ule( struct dvb_net_priv *p ) | |
331 | { | |
332 | p->ule_skb = NULL; | |
333 | p->ule_next_hdr = NULL; | |
334 | p->ule_sndu_len = 0; | |
335 | p->ule_sndu_type = 0; | |
336 | p->ule_sndu_type_1 = 0; | |
337 | p->ule_sndu_remain = 0; | |
338 | p->ule_dbit = 0xFF; | |
339 | p->ule_bridged = 0; | |
340 | } | |
341 | ||
342 | /** | |
343 | * Decode ULE SNDUs according to draft-ietf-ipdvb-ule-03.txt from a sequence of | |
344 | * TS cells of a single PID. | |
345 | */ | |
346 | static void dvb_net_ule( struct net_device *dev, const u8 *buf, size_t buf_len ) | |
347 | { | |
0eade1f9 | 348 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 | 349 | unsigned long skipped = 0L; |
372280d2 TP |
350 | const u8 *ts, *ts_end, *from_where = NULL; |
351 | u8 ts_remain = 0, how_much = 0, new_ts = 1; | |
1da177e4 | 352 | struct ethhdr *ethh = NULL; |
5c331fc8 | 353 | bool error = false; |
1da177e4 LT |
354 | |
355 | #ifdef ULE_DEBUG | |
356 | /* The code inside ULE_DEBUG keeps a history of the last 100 TS cells processed. */ | |
357 | static unsigned char ule_hist[100*TS_SZ]; | |
ff699e6b | 358 | static unsigned char *ule_where = ule_hist, ule_dump; |
1da177e4 LT |
359 | #endif |
360 | ||
1da177e4 LT |
361 | /* For all TS cells in current buffer. |
362 | * Appearently, we are called for every single TS cell. | |
363 | */ | |
372280d2 | 364 | for (ts = buf, ts_end = buf + buf_len; ts < ts_end; /* no default incr. */ ) { |
1da177e4 LT |
365 | |
366 | if (new_ts) { | |
367 | /* We are about to process a new TS cell. */ | |
368 | ||
369 | #ifdef ULE_DEBUG | |
370 | if (ule_where >= &ule_hist[100*TS_SZ]) ule_where = ule_hist; | |
371 | memcpy( ule_where, ts, TS_SZ ); | |
372 | if (ule_dump) { | |
373 | hexdump( ule_where, TS_SZ ); | |
374 | ule_dump = 0; | |
375 | } | |
376 | ule_where += TS_SZ; | |
377 | #endif | |
378 | ||
379 | /* Check TS error conditions: sync_byte, transport_error_indicator, scrambling_control . */ | |
380 | if ((ts[0] != TS_SYNC) || (ts[1] & TS_TEI) || ((ts[3] & TS_SC) != 0)) { | |
381 | printk(KERN_WARNING "%lu: Invalid TS cell: SYNC %#x, TEI %u, SC %#x.\n", | |
382 | priv->ts_count, ts[0], ts[1] & TS_TEI >> 7, ts[3] & 0xC0 >> 6); | |
383 | ||
384 | /* Drop partly decoded SNDU, reset state, resync on PUSI. */ | |
385 | if (priv->ule_skb) { | |
386 | dev_kfree_skb( priv->ule_skb ); | |
387 | /* Prepare for next SNDU. */ | |
fb875333 SH |
388 | dev->stats.rx_errors++; |
389 | dev->stats.rx_frame_errors++; | |
1da177e4 LT |
390 | } |
391 | reset_ule(priv); | |
392 | priv->need_pusi = 1; | |
393 | ||
394 | /* Continue with next TS cell. */ | |
395 | ts += TS_SZ; | |
396 | priv->ts_count++; | |
397 | continue; | |
398 | } | |
399 | ||
400 | ts_remain = 184; | |
401 | from_where = ts + 4; | |
402 | } | |
403 | /* Synchronize on PUSI, if required. */ | |
404 | if (priv->need_pusi) { | |
405 | if (ts[1] & TS_PUSI) { | |
406 | /* Find beginning of first ULE SNDU in current TS cell. */ | |
407 | /* Synchronize continuity counter. */ | |
408 | priv->tscc = ts[3] & 0x0F; | |
409 | /* There is a pointer field here. */ | |
410 | if (ts[4] > ts_remain) { | |
411 | printk(KERN_ERR "%lu: Invalid ULE packet " | |
412 | "(pointer field %d)\n", priv->ts_count, ts[4]); | |
413 | ts += TS_SZ; | |
414 | priv->ts_count++; | |
415 | continue; | |
416 | } | |
417 | /* Skip to destination of pointer field. */ | |
418 | from_where = &ts[5] + ts[4]; | |
419 | ts_remain -= 1 + ts[4]; | |
420 | skipped = 0; | |
421 | } else { | |
422 | skipped++; | |
423 | ts += TS_SZ; | |
424 | priv->ts_count++; | |
425 | continue; | |
426 | } | |
427 | } | |
428 | ||
1da177e4 | 429 | if (new_ts) { |
18232ca6 | 430 | /* Check continuity counter. */ |
1da177e4 LT |
431 | if ((ts[3] & 0x0F) == priv->tscc) |
432 | priv->tscc = (priv->tscc + 1) & 0x0F; | |
433 | else { | |
434 | /* TS discontinuity handling: */ | |
435 | printk(KERN_WARNING "%lu: TS discontinuity: got %#x, " | |
18232ca6 | 436 | "expected %#x.\n", priv->ts_count, ts[3] & 0x0F, priv->tscc); |
1da177e4 LT |
437 | /* Drop partly decoded SNDU, reset state, resync on PUSI. */ |
438 | if (priv->ule_skb) { | |
439 | dev_kfree_skb( priv->ule_skb ); | |
440 | /* Prepare for next SNDU. */ | |
441 | // reset_ule(priv); moved to below. | |
fb875333 SH |
442 | dev->stats.rx_errors++; |
443 | dev->stats.rx_frame_errors++; | |
1da177e4 LT |
444 | } |
445 | reset_ule(priv); | |
446 | /* skip to next PUSI. */ | |
447 | priv->need_pusi = 1; | |
1da177e4 LT |
448 | continue; |
449 | } | |
450 | /* If we still have an incomplete payload, but PUSI is | |
451 | * set; some TS cells are missing. | |
452 | * This is only possible here, if we missed exactly 16 TS | |
453 | * cells (continuity counter wrap). */ | |
454 | if (ts[1] & TS_PUSI) { | |
455 | if (! priv->need_pusi) { | |
18232ca6 | 456 | if (!(*from_where < (ts_remain-1)) || *from_where != priv->ule_sndu_remain) { |
1da177e4 LT |
457 | /* Pointer field is invalid. Drop this TS cell and any started ULE SNDU. */ |
458 | printk(KERN_WARNING "%lu: Invalid pointer " | |
459 | "field: %u.\n", priv->ts_count, *from_where); | |
460 | ||
461 | /* Drop partly decoded SNDU, reset state, resync on PUSI. */ | |
462 | if (priv->ule_skb) { | |
5c331fc8 AWC |
463 | error = true; |
464 | dev_kfree_skb(priv->ule_skb); | |
465 | } | |
466 | ||
467 | if (error || priv->ule_sndu_remain) { | |
fb875333 SH |
468 | dev->stats.rx_errors++; |
469 | dev->stats.rx_frame_errors++; | |
5c331fc8 | 470 | error = false; |
1da177e4 | 471 | } |
5c331fc8 | 472 | |
1da177e4 LT |
473 | reset_ule(priv); |
474 | priv->need_pusi = 1; | |
1da177e4 LT |
475 | continue; |
476 | } | |
477 | /* Skip pointer field (we're processing a | |
478 | * packed payload). */ | |
479 | from_where += 1; | |
480 | ts_remain -= 1; | |
481 | } else | |
482 | priv->need_pusi = 0; | |
483 | ||
484 | if (priv->ule_sndu_remain > 183) { | |
485 | /* Current SNDU lacks more data than there could be available in the | |
486 | * current TS cell. */ | |
fb875333 SH |
487 | dev->stats.rx_errors++; |
488 | dev->stats.rx_length_errors++; | |
1da177e4 LT |
489 | printk(KERN_WARNING "%lu: Expected %d more SNDU bytes, but " |
490 | "got PUSI (pf %d, ts_remain %d). Flushing incomplete payload.\n", | |
491 | priv->ts_count, priv->ule_sndu_remain, ts[4], ts_remain); | |
492 | dev_kfree_skb(priv->ule_skb); | |
493 | /* Prepare for next SNDU. */ | |
494 | reset_ule(priv); | |
495 | /* Resync: go to where pointer field points to: start of next ULE SNDU. */ | |
496 | from_where += ts[4]; | |
497 | ts_remain -= ts[4]; | |
498 | } | |
499 | } | |
500 | } | |
501 | ||
502 | /* Check if new payload needs to be started. */ | |
503 | if (priv->ule_skb == NULL) { | |
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 ts_remain has to be >= 2 here. */ | |
509 | if (ts_remain < 2) { | |
510 | printk(KERN_WARNING "Invalid payload packing: only %d " | |
511 | "bytes left in TS. Resyncing.\n", ts_remain); | |
512 | priv->ule_sndu_len = 0; | |
513 | priv->need_pusi = 1; | |
29e1fa35 | 514 | ts += TS_SZ; |
1da177e4 LT |
515 | continue; |
516 | } | |
517 | ||
518 | if (! priv->ule_sndu_len) { | |
519 | /* Got at least two bytes, thus extrace the SNDU length. */ | |
520 | priv->ule_sndu_len = from_where[0] << 8 | from_where[1]; | |
521 | if (priv->ule_sndu_len & 0x8000) { | |
522 | /* D-Bit is set: no dest mac present. */ | |
523 | priv->ule_sndu_len &= 0x7FFF; | |
524 | priv->ule_dbit = 1; | |
525 | } else | |
526 | priv->ule_dbit = 0; | |
527 | ||
18232ca6 | 528 | if (priv->ule_sndu_len < 5) { |
1da177e4 LT |
529 | printk(KERN_WARNING "%lu: Invalid ULE SNDU length %u. " |
530 | "Resyncing.\n", priv->ts_count, priv->ule_sndu_len); | |
fb875333 SH |
531 | dev->stats.rx_errors++; |
532 | dev->stats.rx_length_errors++; | |
1da177e4 LT |
533 | priv->ule_sndu_len = 0; |
534 | priv->need_pusi = 1; | |
535 | new_ts = 1; | |
536 | ts += TS_SZ; | |
537 | priv->ts_count++; | |
538 | continue; | |
539 | } | |
540 | ts_remain -= 2; /* consume the 2 bytes SNDU length. */ | |
541 | from_where += 2; | |
542 | } | |
543 | ||
5c331fc8 | 544 | priv->ule_sndu_remain = priv->ule_sndu_len + 2; |
1da177e4 LT |
545 | /* |
546 | * State of current TS: | |
547 | * ts_remain (remaining bytes in the current TS cell) | |
548 | * 0 ule_type is not available now, we need the next TS cell | |
549 | * 1 the first byte of the ule_type is present | |
550 | * >=2 full ULE header present, maybe some payload data as well. | |
551 | */ | |
552 | switch (ts_remain) { | |
553 | case 1: | |
5c331fc8 | 554 | priv->ule_sndu_remain--; |
1da177e4 LT |
555 | priv->ule_sndu_type = from_where[0] << 8; |
556 | priv->ule_sndu_type_1 = 1; /* first byte of ule_type is set. */ | |
557 | ts_remain -= 1; from_where += 1; | |
558 | /* Continue w/ next TS. */ | |
559 | case 0: | |
560 | new_ts = 1; | |
561 | ts += TS_SZ; | |
562 | priv->ts_count++; | |
563 | continue; | |
564 | ||
565 | default: /* complete ULE header is present in current TS. */ | |
566 | /* Extract ULE type field. */ | |
567 | if (priv->ule_sndu_type_1) { | |
5c331fc8 | 568 | priv->ule_sndu_type_1 = 0; |
1da177e4 LT |
569 | priv->ule_sndu_type |= from_where[0]; |
570 | from_where += 1; /* points to payload start. */ | |
571 | ts_remain -= 1; | |
572 | } else { | |
573 | /* Complete type is present in new TS. */ | |
574 | priv->ule_sndu_type = from_where[0] << 8 | from_where[1]; | |
575 | from_where += 2; /* points to payload start. */ | |
576 | ts_remain -= 2; | |
577 | } | |
578 | break; | |
579 | } | |
580 | ||
581 | /* Allocate the skb (decoder target buffer) with the correct size, as follows: | |
582 | * prepare for the largest case: bridged SNDU with MAC address (dbit = 0). */ | |
583 | priv->ule_skb = dev_alloc_skb( priv->ule_sndu_len + ETH_HLEN + ETH_ALEN ); | |
584 | if (priv->ule_skb == NULL) { | |
585 | printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", | |
586 | dev->name); | |
fb875333 | 587 | dev->stats.rx_dropped++; |
1da177e4 LT |
588 | return; |
589 | } | |
590 | ||
591 | /* This includes the CRC32 _and_ dest mac, if !dbit. */ | |
592 | priv->ule_sndu_remain = priv->ule_sndu_len; | |
593 | priv->ule_skb->dev = dev; | |
594 | /* Leave space for Ethernet or bridged SNDU header (eth hdr plus one MAC addr). */ | |
595 | skb_reserve( priv->ule_skb, ETH_HLEN + ETH_ALEN ); | |
596 | } | |
597 | ||
598 | /* Copy data into our current skb. */ | |
599 | how_much = min(priv->ule_sndu_remain, (int)ts_remain); | |
600 | memcpy(skb_put(priv->ule_skb, how_much), from_where, how_much); | |
601 | priv->ule_sndu_remain -= how_much; | |
602 | ts_remain -= how_much; | |
603 | from_where += how_much; | |
604 | ||
605 | /* Check for complete payload. */ | |
606 | if (priv->ule_sndu_remain <= 0) { | |
607 | /* Check CRC32, we've got it in our skb already. */ | |
12fbcef1 AV |
608 | __be16 ulen = htons(priv->ule_sndu_len); |
609 | __be16 utype = htons(priv->ule_sndu_type); | |
27a884dc | 610 | const u8 *tail; |
1da177e4 LT |
611 | struct kvec iov[3] = { |
612 | { &ulen, sizeof ulen }, | |
613 | { &utype, sizeof utype }, | |
614 | { priv->ule_skb->data, priv->ule_skb->len - 4 } | |
615 | }; | |
dedcefb0 | 616 | u32 ule_crc = ~0L, expected_crc; |
1da177e4 LT |
617 | if (priv->ule_dbit) { |
618 | /* Set D-bit for CRC32 verification, | |
619 | * if it was set originally. */ | |
f51b10ef | 620 | ulen |= htons(0x8000); |
1da177e4 LT |
621 | } |
622 | ||
623 | ule_crc = iov_crc32(ule_crc, iov, 3); | |
27a884dc ACM |
624 | tail = skb_tail_pointer(priv->ule_skb); |
625 | expected_crc = *(tail - 4) << 24 | | |
626 | *(tail - 3) << 16 | | |
627 | *(tail - 2) << 8 | | |
628 | *(tail - 1); | |
1da177e4 | 629 | if (ule_crc != expected_crc) { |
5ef35be4 | 630 | printk(KERN_WARNING "%lu: CRC32 check FAILED: %08x / %08x, SNDU len %d type %#x, ts_remain %d, next 2: %x.\n", |
1da177e4 LT |
631 | priv->ts_count, ule_crc, expected_crc, priv->ule_sndu_len, priv->ule_sndu_type, ts_remain, ts_remain > 2 ? *(unsigned short *)from_where : 0); |
632 | ||
633 | #ifdef ULE_DEBUG | |
634 | hexdump( iov[0].iov_base, iov[0].iov_len ); | |
635 | hexdump( iov[1].iov_base, iov[1].iov_len ); | |
636 | hexdump( iov[2].iov_base, iov[2].iov_len ); | |
637 | ||
638 | if (ule_where == ule_hist) { | |
639 | hexdump( &ule_hist[98*TS_SZ], TS_SZ ); | |
640 | hexdump( &ule_hist[99*TS_SZ], TS_SZ ); | |
641 | } else if (ule_where == &ule_hist[TS_SZ]) { | |
642 | hexdump( &ule_hist[99*TS_SZ], TS_SZ ); | |
643 | hexdump( ule_hist, TS_SZ ); | |
644 | } else { | |
645 | hexdump( ule_where - TS_SZ - TS_SZ, TS_SZ ); | |
646 | hexdump( ule_where - TS_SZ, TS_SZ ); | |
647 | } | |
648 | ule_dump = 1; | |
649 | #endif | |
650 | ||
fb875333 SH |
651 | dev->stats.rx_errors++; |
652 | dev->stats.rx_crc_errors++; | |
1da177e4 LT |
653 | dev_kfree_skb(priv->ule_skb); |
654 | } else { | |
655 | /* CRC32 verified OK. */ | |
18232ca6 CP |
656 | u8 dest_addr[ETH_ALEN]; |
657 | static const u8 bc_addr[ETH_ALEN] = | |
658 | { [ 0 ... ETH_ALEN-1] = 0xff }; | |
659 | ||
660 | /* CRC32 was OK. Remove it from skb. */ | |
661 | priv->ule_skb->tail -= 4; | |
662 | priv->ule_skb->len -= 4; | |
663 | ||
664 | if (!priv->ule_dbit) { | |
665 | /* | |
666 | * The destination MAC address is the | |
667 | * next data in the skb. It comes | |
668 | * before any extension headers. | |
669 | * | |
670 | * Check if the payload of this SNDU | |
671 | * should be passed up the stack. | |
672 | */ | |
673 | register int drop = 0; | |
674 | if (priv->rx_mode != RX_MODE_PROMISC) { | |
675 | if (priv->ule_skb->data[0] & 0x01) { | |
676 | /* multicast or broadcast */ | |
5e231c2c | 677 | if (!ether_addr_equal(priv->ule_skb->data, bc_addr)) { |
18232ca6 CP |
678 | /* multicast */ |
679 | if (priv->rx_mode == RX_MODE_MULTI) { | |
680 | int i; | |
5e231c2c | 681 | for(i = 0; i < priv->multi_num && |
682 | !ether_addr_equal(priv->ule_skb->data, | |
683 | priv->multi_macs[i]); i++) | |
18232ca6 CP |
684 | ; |
685 | if (i == priv->multi_num) | |
686 | drop = 1; | |
687 | } else if (priv->rx_mode != RX_MODE_ALL_MULTI) | |
688 | drop = 1; /* no broadcast; */ | |
689 | /* else: all multicast mode: accept all multicast packets */ | |
690 | } | |
691 | /* else: broadcast */ | |
692 | } | |
5e231c2c | 693 | else if (!ether_addr_equal(priv->ule_skb->data, dev->dev_addr)) |
18232ca6 CP |
694 | drop = 1; |
695 | /* else: destination address matches the MAC address of our receiver device */ | |
696 | } | |
c84e6036 | 697 | /* else: promiscuous mode; pass everything up the stack */ |
18232ca6 CP |
698 | |
699 | if (drop) { | |
700 | #ifdef ULE_DEBUG | |
701 | dprintk("Dropping SNDU: MAC destination address does not match: dest addr: "MAC_ADDR_PRINTFMT", dev addr: "MAC_ADDR_PRINTFMT"\n", | |
702 | MAX_ADDR_PRINTFMT_ARGS(priv->ule_skb->data), MAX_ADDR_PRINTFMT_ARGS(dev->dev_addr)); | |
703 | #endif | |
704 | dev_kfree_skb(priv->ule_skb); | |
705 | goto sndu_done; | |
706 | } | |
707 | else | |
708 | { | |
d626f62b ACM |
709 | skb_copy_from_linear_data(priv->ule_skb, |
710 | dest_addr, | |
711 | ETH_ALEN); | |
18232ca6 CP |
712 | skb_pull(priv->ule_skb, ETH_ALEN); |
713 | } | |
714 | } | |
715 | ||
1da177e4 | 716 | /* Handle ULE Extension Headers. */ |
e5c5d22e | 717 | if (priv->ule_sndu_type < ETH_P_802_3_MIN) { |
1da177e4 | 718 | /* There is an extension header. Handle it accordingly. */ |
18232ca6 | 719 | int l = handle_ule_extensions(priv); |
1da177e4 LT |
720 | if (l < 0) { |
721 | /* Mandatory extension header unknown or TEST SNDU. Drop it. */ | |
722 | // printk( KERN_WARNING "Dropping SNDU, extension headers.\n" ); | |
18232ca6 | 723 | dev_kfree_skb(priv->ule_skb); |
1da177e4 LT |
724 | goto sndu_done; |
725 | } | |
18232ca6 | 726 | skb_pull(priv->ule_skb, l); |
1da177e4 LT |
727 | } |
728 | ||
18232ca6 CP |
729 | /* |
730 | * Construct/assure correct ethernet header. | |
731 | * Note: in bridged mode (priv->ule_bridged != | |
732 | * 0) we already have the (original) ethernet | |
733 | * header at the start of the payload (after | |
734 | * optional dest. address and any extension | |
735 | * headers). | |
736 | */ | |
737 | ||
738 | if (!priv->ule_bridged) { | |
739 | skb_push(priv->ule_skb, ETH_HLEN); | |
740 | ethh = (struct ethhdr *)priv->ule_skb->data; | |
741 | if (!priv->ule_dbit) { | |
742 | /* dest_addr buffer is only valid if priv->ule_dbit == 0 */ | |
743 | memcpy(ethh->h_dest, dest_addr, ETH_ALEN); | |
744 | memset(ethh->h_source, 0, ETH_ALEN); | |
1da177e4 | 745 | } |
18232ca6 CP |
746 | else /* zeroize source and dest */ |
747 | memset( ethh, 0, ETH_ALEN*2 ); | |
748 | ||
749 | ethh->h_proto = htons(priv->ule_sndu_type); | |
1da177e4 | 750 | } |
18232ca6 | 751 | /* else: skb is in correct state; nothing to do. */ |
1da177e4 LT |
752 | priv->ule_bridged = 0; |
753 | ||
754 | /* Stuff into kernel's protocol stack. */ | |
755 | priv->ule_skb->protocol = dvb_net_eth_type_trans(priv->ule_skb, dev); | |
756 | /* If D-bit is set (i.e. destination MAC address not present), | |
757 | * receive the packet anyhow. */ | |
758 | /* if (priv->ule_dbit && skb->pkt_type == PACKET_OTHERHOST) | |
759 | priv->ule_skb->pkt_type = PACKET_HOST; */ | |
fb875333 SH |
760 | dev->stats.rx_packets++; |
761 | dev->stats.rx_bytes += priv->ule_skb->len; | |
1da177e4 LT |
762 | netif_rx(priv->ule_skb); |
763 | } | |
764 | sndu_done: | |
765 | /* Prepare for next SNDU. */ | |
766 | reset_ule(priv); | |
767 | } | |
768 | ||
769 | /* More data in current TS (look at the bytes following the CRC32)? */ | |
770 | if (ts_remain >= 2 && *((unsigned short *)from_where) != 0xFFFF) { | |
771 | /* Next ULE SNDU starts right there. */ | |
772 | new_ts = 0; | |
773 | priv->ule_skb = NULL; | |
774 | priv->ule_sndu_type_1 = 0; | |
775 | priv->ule_sndu_len = 0; | |
776 | // printk(KERN_WARNING "More data in current TS: [%#x %#x %#x %#x]\n", | |
777 | // *(from_where + 0), *(from_where + 1), | |
778 | // *(from_where + 2), *(from_where + 3)); | |
779 | // printk(KERN_WARNING "ts @ %p, stopped @ %p:\n", ts, from_where + 0); | |
780 | // hexdump(ts, 188); | |
781 | } else { | |
782 | new_ts = 1; | |
783 | ts += TS_SZ; | |
784 | priv->ts_count++; | |
785 | if (priv->ule_skb == NULL) { | |
786 | priv->need_pusi = 1; | |
787 | priv->ule_sndu_type_1 = 0; | |
788 | priv->ule_sndu_len = 0; | |
789 | } | |
790 | } | |
791 | } /* for all available TS cells */ | |
792 | } | |
793 | ||
794 | static int dvb_net_ts_callback(const u8 *buffer1, size_t buffer1_len, | |
795 | const u8 *buffer2, size_t buffer2_len, | |
796 | struct dmx_ts_feed *feed, enum dmx_success success) | |
797 | { | |
0c53c70f | 798 | struct net_device *dev = feed->priv; |
1da177e4 | 799 | |
5fa1247a AV |
800 | if (buffer2) |
801 | printk(KERN_WARNING "buffer2 not NULL: %p.\n", buffer2); | |
1da177e4 LT |
802 | if (buffer1_len > 32768) |
803 | printk(KERN_WARNING "length > 32k: %zu.\n", buffer1_len); | |
804 | /* printk("TS callback: %u bytes, %u TS cells @ %p.\n", | |
afd1a0c9 | 805 | buffer1_len, buffer1_len / TS_SZ, buffer1); */ |
1da177e4 LT |
806 | dvb_net_ule(dev, buffer1, buffer1_len); |
807 | return 0; | |
808 | } | |
809 | ||
810 | ||
71be258b MK |
811 | static void dvb_net_sec(struct net_device *dev, |
812 | const u8 *pkt, int pkt_len) | |
1da177e4 | 813 | { |
afd1a0c9 MCC |
814 | u8 *eth; |
815 | struct sk_buff *skb; | |
fb875333 | 816 | struct net_device_stats *stats = &dev->stats; |
59142330 | 817 | int snap = 0; |
1da177e4 LT |
818 | |
819 | /* note: pkt_len includes a 32bit checksum */ | |
820 | if (pkt_len < 16) { | |
821 | printk("%s: IP/MPE packet length = %d too small.\n", | |
822 | dev->name, pkt_len); | |
823 | stats->rx_errors++; | |
824 | stats->rx_length_errors++; | |
825 | return; | |
826 | } | |
827 | /* it seems some ISPs manage to screw up here, so we have to | |
828 | * relax the error checks... */ | |
829 | #if 0 | |
830 | if ((pkt[5] & 0xfd) != 0xc1) { | |
831 | /* drop scrambled or broken packets */ | |
832 | #else | |
833 | if ((pkt[5] & 0x3c) != 0x00) { | |
834 | /* drop scrambled */ | |
835 | #endif | |
836 | stats->rx_errors++; | |
837 | stats->rx_crc_errors++; | |
838 | return; | |
839 | } | |
840 | if (pkt[5] & 0x02) { | |
59142330 JS |
841 | /* handle LLC/SNAP, see rfc-1042 */ |
842 | if (pkt_len < 24 || memcmp(&pkt[12], "\xaa\xaa\x03\0\0\0", 6)) { | |
843 | stats->rx_dropped++; | |
844 | return; | |
845 | } | |
846 | snap = 8; | |
afd1a0c9 | 847 | } |
1da177e4 LT |
848 | if (pkt[7]) { |
849 | /* FIXME: assemble datagram from multiple sections */ | |
850 | stats->rx_errors++; | |
851 | stats->rx_frame_errors++; | |
852 | return; | |
853 | } | |
854 | ||
855 | /* we have 14 byte ethernet header (ip header follows); | |
59142330 | 856 | * 12 byte MPE header; 4 byte checksum; + 2 byte alignment, 8 byte LLC/SNAP |
1da177e4 | 857 | */ |
59142330 | 858 | if (!(skb = dev_alloc_skb(pkt_len - 4 - 12 + 14 + 2 - snap))) { |
1da177e4 LT |
859 | //printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name); |
860 | stats->rx_dropped++; | |
861 | return; | |
862 | } | |
863 | skb_reserve(skb, 2); /* longword align L3 header */ | |
864 | skb->dev = dev; | |
865 | ||
866 | /* copy L3 payload */ | |
59142330 JS |
867 | eth = (u8 *) skb_put(skb, pkt_len - 12 - 4 + 14 - snap); |
868 | memcpy(eth + 14, pkt + 12 + snap, pkt_len - 12 - 4 - snap); | |
1da177e4 LT |
869 | |
870 | /* create ethernet header: */ | |
afd1a0c9 MCC |
871 | eth[0]=pkt[0x0b]; |
872 | eth[1]=pkt[0x0a]; | |
873 | eth[2]=pkt[0x09]; | |
874 | eth[3]=pkt[0x08]; | |
875 | eth[4]=pkt[0x04]; | |
876 | eth[5]=pkt[0x03]; | |
1da177e4 | 877 | |
afd1a0c9 | 878 | eth[6]=eth[7]=eth[8]=eth[9]=eth[10]=eth[11]=0; |
1da177e4 | 879 | |
59142330 JS |
880 | if (snap) { |
881 | eth[12] = pkt[18]; | |
882 | eth[13] = pkt[19]; | |
883 | } else { | |
884 | /* protocol numbers are from rfc-1700 or | |
885 | * http://www.iana.org/assignments/ethernet-numbers | |
886 | */ | |
887 | if (pkt[12] >> 4 == 6) { /* version field from IP header */ | |
888 | eth[12] = 0x86; /* IPv6 */ | |
889 | eth[13] = 0xdd; | |
890 | } else { | |
891 | eth[12] = 0x08; /* IPv4 */ | |
892 | eth[13] = 0x00; | |
893 | } | |
894 | } | |
1da177e4 LT |
895 | |
896 | skb->protocol = dvb_net_eth_type_trans(skb, dev); | |
897 | ||
898 | stats->rx_packets++; | |
899 | stats->rx_bytes+=skb->len; | |
afd1a0c9 | 900 | netif_rx(skb); |
1da177e4 LT |
901 | } |
902 | ||
903 | static int dvb_net_sec_callback(const u8 *buffer1, size_t buffer1_len, | |
904 | const u8 *buffer2, size_t buffer2_len, | |
905 | struct dmx_section_filter *filter, | |
906 | enum dmx_success success) | |
907 | { | |
afd1a0c9 | 908 | struct net_device *dev = filter->priv; |
1da177e4 LT |
909 | |
910 | /** | |
911 | * we rely on the DVB API definition where exactly one complete | |
912 | * section is delivered in buffer1 | |
913 | */ | |
04b35abe | 914 | dvb_net_sec (dev, buffer1, buffer1_len); |
1da177e4 LT |
915 | return 0; |
916 | } | |
917 | ||
918 | static int dvb_net_tx(struct sk_buff *skb, struct net_device *dev) | |
919 | { | |
920 | dev_kfree_skb(skb); | |
6ed10654 | 921 | return NETDEV_TX_OK; |
1da177e4 LT |
922 | } |
923 | ||
924 | static u8 mask_normal[6]={0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; | |
925 | static u8 mask_allmulti[6]={0xff, 0xff, 0xff, 0x00, 0x00, 0x00}; | |
926 | static u8 mac_allmulti[6]={0x01, 0x00, 0x5e, 0x00, 0x00, 0x00}; | |
927 | static u8 mask_promisc[6]={0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; | |
928 | ||
929 | static int dvb_net_filter_sec_set(struct net_device *dev, | |
930 | struct dmx_section_filter **secfilter, | |
931 | u8 *mac, u8 *mac_mask) | |
932 | { | |
0eade1f9 | 933 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
934 | int ret; |
935 | ||
936 | *secfilter=NULL; | |
937 | ret = priv->secfeed->allocate_filter(priv->secfeed, secfilter); | |
938 | if (ret<0) { | |
939 | printk("%s: could not get filter\n", dev->name); | |
940 | return ret; | |
941 | } | |
942 | ||
943 | (*secfilter)->priv=(void *) dev; | |
944 | ||
945 | memset((*secfilter)->filter_value, 0x00, DMX_MAX_FILTER_SIZE); | |
946 | memset((*secfilter)->filter_mask, 0x00, DMX_MAX_FILTER_SIZE); | |
947 | memset((*secfilter)->filter_mode, 0xff, DMX_MAX_FILTER_SIZE); | |
948 | ||
949 | (*secfilter)->filter_value[0]=0x3e; | |
950 | (*secfilter)->filter_value[3]=mac[5]; | |
951 | (*secfilter)->filter_value[4]=mac[4]; | |
952 | (*secfilter)->filter_value[8]=mac[3]; | |
953 | (*secfilter)->filter_value[9]=mac[2]; | |
954 | (*secfilter)->filter_value[10]=mac[1]; | |
955 | (*secfilter)->filter_value[11]=mac[0]; | |
956 | ||
957 | (*secfilter)->filter_mask[0] = 0xff; | |
958 | (*secfilter)->filter_mask[3] = mac_mask[5]; | |
959 | (*secfilter)->filter_mask[4] = mac_mask[4]; | |
960 | (*secfilter)->filter_mask[8] = mac_mask[3]; | |
961 | (*secfilter)->filter_mask[9] = mac_mask[2]; | |
962 | (*secfilter)->filter_mask[10] = mac_mask[1]; | |
963 | (*secfilter)->filter_mask[11]=mac_mask[0]; | |
964 | ||
0e05a613 | 965 | dprintk("%s: filter mac=%pM\n", dev->name, mac); |
966 | dprintk("%s: filter mask=%pM\n", dev->name, mac_mask); | |
1da177e4 LT |
967 | |
968 | return 0; | |
969 | } | |
970 | ||
971 | static int dvb_net_feed_start(struct net_device *dev) | |
972 | { | |
1130ca45 | 973 | int ret = 0, i; |
0eade1f9 | 974 | struct dvb_net_priv *priv = netdev_priv(dev); |
afd1a0c9 MCC |
975 | struct dmx_demux *demux = priv->demux; |
976 | unsigned char *mac = (unsigned char *) dev->dev_addr; | |
1da177e4 | 977 | |
46b4f7c1 | 978 | dprintk("%s: rx_mode %i\n", __func__, priv->rx_mode); |
3593cab5 | 979 | mutex_lock(&priv->mutex); |
1da177e4 | 980 | if (priv->tsfeed || priv->secfeed || priv->secfilter || priv->multi_secfilter[0]) |
46b4f7c1 | 981 | printk("%s: BUG %d\n", __func__, __LINE__); |
1da177e4 LT |
982 | |
983 | priv->secfeed=NULL; | |
984 | priv->secfilter=NULL; | |
985 | priv->tsfeed = NULL; | |
986 | ||
987 | if (priv->feedtype == DVB_NET_FEEDTYPE_MPE) { | |
46b4f7c1 | 988 | dprintk("%s: alloc secfeed\n", __func__); |
1da177e4 LT |
989 | ret=demux->allocate_section_feed(demux, &priv->secfeed, |
990 | dvb_net_sec_callback); | |
991 | if (ret<0) { | |
992 | printk("%s: could not allocate section feed\n", dev->name); | |
1130ca45 | 993 | goto error; |
1da177e4 LT |
994 | } |
995 | ||
5d2cd163 | 996 | ret = priv->secfeed->set(priv->secfeed, priv->pid, 32768, 1); |
1da177e4 LT |
997 | |
998 | if (ret<0) { | |
999 | printk("%s: could not set section feed\n", dev->name); | |
1000 | priv->demux->release_section_feed(priv->demux, priv->secfeed); | |
1001 | priv->secfeed=NULL; | |
1130ca45 | 1002 | goto error; |
1da177e4 LT |
1003 | } |
1004 | ||
1005 | if (priv->rx_mode != RX_MODE_PROMISC) { | |
46b4f7c1 | 1006 | dprintk("%s: set secfilter\n", __func__); |
1da177e4 LT |
1007 | dvb_net_filter_sec_set(dev, &priv->secfilter, mac, mask_normal); |
1008 | } | |
1009 | ||
1010 | switch (priv->rx_mode) { | |
1011 | case RX_MODE_MULTI: | |
1012 | for (i = 0; i < priv->multi_num; i++) { | |
46b4f7c1 | 1013 | dprintk("%s: set multi_secfilter[%d]\n", __func__, i); |
1da177e4 LT |
1014 | dvb_net_filter_sec_set(dev, &priv->multi_secfilter[i], |
1015 | priv->multi_macs[i], mask_normal); | |
1016 | } | |
1017 | break; | |
1018 | case RX_MODE_ALL_MULTI: | |
1019 | priv->multi_num=1; | |
46b4f7c1 | 1020 | dprintk("%s: set multi_secfilter[0]\n", __func__); |
1da177e4 LT |
1021 | dvb_net_filter_sec_set(dev, &priv->multi_secfilter[0], |
1022 | mac_allmulti, mask_allmulti); | |
1023 | break; | |
1024 | case RX_MODE_PROMISC: | |
1025 | priv->multi_num=0; | |
46b4f7c1 | 1026 | dprintk("%s: set secfilter\n", __func__); |
1da177e4 LT |
1027 | dvb_net_filter_sec_set(dev, &priv->secfilter, mac, mask_promisc); |
1028 | break; | |
1029 | } | |
1030 | ||
46b4f7c1 | 1031 | dprintk("%s: start filtering\n", __func__); |
1da177e4 LT |
1032 | priv->secfeed->start_filtering(priv->secfeed); |
1033 | } else if (priv->feedtype == DVB_NET_FEEDTYPE_ULE) { | |
18232ca6 | 1034 | struct timespec timeout = { 0, 10000000 }; // 10 msec |
1da177e4 LT |
1035 | |
1036 | /* we have payloads encapsulated in TS */ | |
46b4f7c1 | 1037 | dprintk("%s: alloc tsfeed\n", __func__); |
1da177e4 LT |
1038 | ret = demux->allocate_ts_feed(demux, &priv->tsfeed, dvb_net_ts_callback); |
1039 | if (ret < 0) { | |
1040 | printk("%s: could not allocate ts feed\n", dev->name); | |
1130ca45 | 1041 | goto error; |
1da177e4 LT |
1042 | } |
1043 | ||
1044 | /* Set netdevice pointer for ts decaps callback. */ | |
1045 | priv->tsfeed->priv = (void *)dev; | |
18232ca6 CP |
1046 | ret = priv->tsfeed->set(priv->tsfeed, |
1047 | priv->pid, /* pid */ | |
1048 | TS_PACKET, /* type */ | |
fde04ab9 | 1049 | DMX_PES_OTHER, /* pes type */ |
1da177e4 | 1050 | 32768, /* circular buffer size */ |
18232ca6 CP |
1051 | timeout /* timeout */ |
1052 | ); | |
1da177e4 LT |
1053 | |
1054 | if (ret < 0) { | |
1055 | printk("%s: could not set ts feed\n", dev->name); | |
1056 | priv->demux->release_ts_feed(priv->demux, priv->tsfeed); | |
1057 | priv->tsfeed = NULL; | |
1130ca45 | 1058 | goto error; |
1da177e4 LT |
1059 | } |
1060 | ||
46b4f7c1 | 1061 | dprintk("%s: start filtering\n", __func__); |
1da177e4 LT |
1062 | priv->tsfeed->start_filtering(priv->tsfeed); |
1063 | } else | |
1130ca45 | 1064 | ret = -EINVAL; |
1da177e4 | 1065 | |
1130ca45 | 1066 | error: |
3593cab5 | 1067 | mutex_unlock(&priv->mutex); |
1130ca45 | 1068 | return ret; |
1da177e4 LT |
1069 | } |
1070 | ||
1071 | static int dvb_net_feed_stop(struct net_device *dev) | |
1072 | { | |
0eade1f9 | 1073 | struct dvb_net_priv *priv = netdev_priv(dev); |
1130ca45 | 1074 | int i, ret = 0; |
1da177e4 | 1075 | |
46b4f7c1 | 1076 | dprintk("%s\n", __func__); |
3593cab5 | 1077 | mutex_lock(&priv->mutex); |
1da177e4 LT |
1078 | if (priv->feedtype == DVB_NET_FEEDTYPE_MPE) { |
1079 | if (priv->secfeed) { | |
1080 | if (priv->secfeed->is_filtering) { | |
46b4f7c1 | 1081 | dprintk("%s: stop secfeed\n", __func__); |
1da177e4 LT |
1082 | priv->secfeed->stop_filtering(priv->secfeed); |
1083 | } | |
1084 | ||
1085 | if (priv->secfilter) { | |
46b4f7c1 | 1086 | dprintk("%s: release secfilter\n", __func__); |
1da177e4 LT |
1087 | priv->secfeed->release_filter(priv->secfeed, |
1088 | priv->secfilter); | |
1089 | priv->secfilter=NULL; | |
1090 | } | |
1091 | ||
1092 | for (i=0; i<priv->multi_num; i++) { | |
1093 | if (priv->multi_secfilter[i]) { | |
1094 | dprintk("%s: release multi_filter[%d]\n", | |
46b4f7c1 | 1095 | __func__, i); |
1da177e4 LT |
1096 | priv->secfeed->release_filter(priv->secfeed, |
1097 | priv->multi_secfilter[i]); | |
1098 | priv->multi_secfilter[i] = NULL; | |
1099 | } | |
1100 | } | |
1101 | ||
1102 | priv->demux->release_section_feed(priv->demux, priv->secfeed); | |
1103 | priv->secfeed = NULL; | |
1104 | } else | |
1105 | printk("%s: no feed to stop\n", dev->name); | |
1106 | } else if (priv->feedtype == DVB_NET_FEEDTYPE_ULE) { | |
1107 | if (priv->tsfeed) { | |
1108 | if (priv->tsfeed->is_filtering) { | |
46b4f7c1 | 1109 | dprintk("%s: stop tsfeed\n", __func__); |
1da177e4 LT |
1110 | priv->tsfeed->stop_filtering(priv->tsfeed); |
1111 | } | |
1112 | priv->demux->release_ts_feed(priv->demux, priv->tsfeed); | |
1113 | priv->tsfeed = NULL; | |
1114 | } | |
1115 | else | |
1116 | printk("%s: no ts feed to stop\n", dev->name); | |
1117 | } else | |
1130ca45 | 1118 | ret = -EINVAL; |
3593cab5 | 1119 | mutex_unlock(&priv->mutex); |
1130ca45 | 1120 | return ret; |
1da177e4 LT |
1121 | } |
1122 | ||
1123 | ||
22bedad3 | 1124 | static int dvb_set_mc_filter(struct net_device *dev, unsigned char *addr) |
1da177e4 | 1125 | { |
0eade1f9 | 1126 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1127 | |
1128 | if (priv->multi_num == DVB_NET_MULTICAST_MAX) | |
1129 | return -ENOMEM; | |
1130 | ||
22bedad3 | 1131 | memcpy(priv->multi_macs[priv->multi_num], addr, ETH_ALEN); |
1da177e4 LT |
1132 | |
1133 | priv->multi_num++; | |
1134 | return 0; | |
1135 | } | |
1136 | ||
1137 | ||
c4028958 | 1138 | static void wq_set_multicast_list (struct work_struct *work) |
1da177e4 | 1139 | { |
c4028958 DH |
1140 | struct dvb_net_priv *priv = |
1141 | container_of(work, struct dvb_net_priv, set_multicast_list_wq); | |
1142 | struct net_device *dev = priv->net; | |
1da177e4 LT |
1143 | |
1144 | dvb_net_feed_stop(dev); | |
1da177e4 | 1145 | priv->rx_mode = RX_MODE_UNI; |
b9e40857 | 1146 | netif_addr_lock_bh(dev); |
1da177e4 LT |
1147 | |
1148 | if (dev->flags & IFF_PROMISC) { | |
1149 | dprintk("%s: promiscuous mode\n", dev->name); | |
1150 | priv->rx_mode = RX_MODE_PROMISC; | |
1151 | } else if ((dev->flags & IFF_ALLMULTI)) { | |
1152 | dprintk("%s: allmulti mode\n", dev->name); | |
1153 | priv->rx_mode = RX_MODE_ALL_MULTI; | |
4cd24eaf | 1154 | } else if (!netdev_mc_empty(dev)) { |
22bedad3 | 1155 | struct netdev_hw_addr *ha; |
1da177e4 LT |
1156 | |
1157 | dprintk("%s: set_mc_list, %d entries\n", | |
4cd24eaf | 1158 | dev->name, netdev_mc_count(dev)); |
1da177e4 LT |
1159 | |
1160 | priv->rx_mode = RX_MODE_MULTI; | |
1161 | priv->multi_num = 0; | |
1162 | ||
22bedad3 JP |
1163 | netdev_for_each_mc_addr(ha, dev) |
1164 | dvb_set_mc_filter(dev, ha->addr); | |
1da177e4 LT |
1165 | } |
1166 | ||
b9e40857 | 1167 | netif_addr_unlock_bh(dev); |
1da177e4 LT |
1168 | dvb_net_feed_start(dev); |
1169 | } | |
1170 | ||
1171 | ||
1172 | static void dvb_net_set_multicast_list (struct net_device *dev) | |
1173 | { | |
0eade1f9 | 1174 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1175 | schedule_work(&priv->set_multicast_list_wq); |
1176 | } | |
1177 | ||
1178 | ||
c4028958 | 1179 | static void wq_restart_net_feed (struct work_struct *work) |
1da177e4 | 1180 | { |
c4028958 DH |
1181 | struct dvb_net_priv *priv = |
1182 | container_of(work, struct dvb_net_priv, restart_net_feed_wq); | |
1183 | struct net_device *dev = priv->net; | |
1da177e4 LT |
1184 | |
1185 | if (netif_running(dev)) { | |
1186 | dvb_net_feed_stop(dev); | |
1187 | dvb_net_feed_start(dev); | |
1188 | } | |
1189 | } | |
1190 | ||
1191 | ||
1192 | static int dvb_net_set_mac (struct net_device *dev, void *p) | |
1193 | { | |
0eade1f9 | 1194 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1195 | struct sockaddr *addr=p; |
1196 | ||
1197 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | |
1198 | ||
1199 | if (netif_running(dev)) | |
1200 | schedule_work(&priv->restart_net_feed_wq); | |
1201 | ||
1202 | return 0; | |
1203 | } | |
1204 | ||
1205 | ||
1206 | static int dvb_net_open(struct net_device *dev) | |
1207 | { | |
0eade1f9 | 1208 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1209 | |
1210 | priv->in_use++; | |
1211 | dvb_net_feed_start(dev); | |
1212 | return 0; | |
1213 | } | |
1214 | ||
1215 | ||
1216 | static int dvb_net_stop(struct net_device *dev) | |
1217 | { | |
0eade1f9 | 1218 | struct dvb_net_priv *priv = netdev_priv(dev); |
1da177e4 LT |
1219 | |
1220 | priv->in_use--; | |
afd1a0c9 | 1221 | return dvb_net_feed_stop(dev); |
1da177e4 LT |
1222 | } |
1223 | ||
3b04ddde SH |
1224 | static const struct header_ops dvb_header_ops = { |
1225 | .create = eth_header, | |
1226 | .parse = eth_header_parse, | |
1227 | .rebuild = eth_rebuild_header, | |
1228 | }; | |
1229 | ||
fb875333 SH |
1230 | |
1231 | static const struct net_device_ops dvb_netdev_ops = { | |
1232 | .ndo_open = dvb_net_open, | |
1233 | .ndo_stop = dvb_net_stop, | |
1234 | .ndo_start_xmit = dvb_net_tx, | |
afc4b13d | 1235 | .ndo_set_rx_mode = dvb_net_set_multicast_list, |
fb875333 SH |
1236 | .ndo_set_mac_address = dvb_net_set_mac, |
1237 | .ndo_change_mtu = eth_change_mtu, | |
1238 | .ndo_validate_addr = eth_validate_addr, | |
1239 | }; | |
1240 | ||
1da177e4 LT |
1241 | static void dvb_net_setup(struct net_device *dev) |
1242 | { | |
1243 | ether_setup(dev); | |
1244 | ||
3b04ddde | 1245 | dev->header_ops = &dvb_header_ops; |
fb875333 | 1246 | dev->netdev_ops = &dvb_netdev_ops; |
1da177e4 | 1247 | dev->mtu = 4096; |
3b04ddde | 1248 | |
1da177e4 LT |
1249 | dev->flags |= IFF_NOARP; |
1250 | } | |
1251 | ||
1252 | static int get_if(struct dvb_net *dvbnet) | |
1253 | { | |
1254 | int i; | |
1255 | ||
1256 | for (i=0; i<DVB_NET_DEVICES_MAX; i++) | |
1257 | if (!dvbnet->state[i]) | |
1258 | break; | |
1259 | ||
1260 | if (i == DVB_NET_DEVICES_MAX) | |
1261 | return -1; | |
1262 | ||
1263 | dvbnet->state[i]=1; | |
1264 | return i; | |
1265 | } | |
1266 | ||
1267 | static int dvb_net_add_if(struct dvb_net *dvbnet, u16 pid, u8 feedtype) | |
1268 | { | |
1269 | struct net_device *net; | |
1270 | struct dvb_net_priv *priv; | |
1271 | int result; | |
1272 | int if_num; | |
1273 | ||
1274 | if (feedtype != DVB_NET_FEEDTYPE_MPE && feedtype != DVB_NET_FEEDTYPE_ULE) | |
1275 | return -EINVAL; | |
1276 | if ((if_num = get_if(dvbnet)) < 0) | |
1277 | return -EINVAL; | |
1278 | ||
1279 | net = alloc_netdev(sizeof(struct dvb_net_priv), "dvb", dvb_net_setup); | |
1280 | if (!net) | |
1281 | return -ENOMEM; | |
1282 | ||
1283 | if (dvbnet->dvbdev->id) | |
1284 | snprintf(net->name, IFNAMSIZ, "dvb%d%u%d", | |
1285 | dvbnet->dvbdev->adapter->num, dvbnet->dvbdev->id, if_num); | |
1286 | else | |
1287 | /* compatibility fix to keep dvb0_0 format */ | |
1288 | snprintf(net->name, IFNAMSIZ, "dvb%d_%d", | |
1289 | dvbnet->dvbdev->adapter->num, if_num); | |
1290 | ||
1291 | net->addr_len = 6; | |
1292 | memcpy(net->dev_addr, dvbnet->dvbdev->adapter->proposed_mac, 6); | |
1293 | ||
1294 | dvbnet->device[if_num] = net; | |
1295 | ||
0eade1f9 | 1296 | priv = netdev_priv(net); |
c4028958 | 1297 | priv->net = net; |
1da177e4 LT |
1298 | priv->demux = dvbnet->demux; |
1299 | priv->pid = pid; | |
1300 | priv->rx_mode = RX_MODE_UNI; | |
1301 | priv->need_pusi = 1; | |
1302 | priv->tscc = 0; | |
1303 | priv->feedtype = feedtype; | |
1304 | reset_ule(priv); | |
1305 | ||
c4028958 DH |
1306 | INIT_WORK(&priv->set_multicast_list_wq, wq_set_multicast_list); |
1307 | INIT_WORK(&priv->restart_net_feed_wq, wq_restart_net_feed); | |
3593cab5 | 1308 | mutex_init(&priv->mutex); |
1da177e4 LT |
1309 | |
1310 | net->base_addr = pid; | |
1311 | ||
1312 | if ((result = register_netdev(net)) < 0) { | |
1313 | dvbnet->device[if_num] = NULL; | |
1314 | free_netdev(net); | |
1315 | return result; | |
1316 | } | |
1317 | printk("dvb_net: created network interface %s\n", net->name); | |
1318 | ||
1319 | return if_num; | |
1320 | } | |
1321 | ||
400b7083 | 1322 | static int dvb_net_remove_if(struct dvb_net *dvbnet, unsigned long num) |
1da177e4 LT |
1323 | { |
1324 | struct net_device *net = dvbnet->device[num]; | |
1325 | struct dvb_net_priv *priv; | |
1326 | ||
1327 | if (!dvbnet->state[num]) | |
1328 | return -EINVAL; | |
0eade1f9 | 1329 | priv = netdev_priv(net); |
1da177e4 LT |
1330 | if (priv->in_use) |
1331 | return -EBUSY; | |
1332 | ||
1333 | dvb_net_stop(net); | |
43829731 TH |
1334 | flush_work(&priv->set_multicast_list_wq); |
1335 | flush_work(&priv->restart_net_feed_wq); | |
1da177e4 LT |
1336 | printk("dvb_net: removed network interface %s\n", net->name); |
1337 | unregister_netdev(net); | |
1338 | dvbnet->state[num]=0; | |
1339 | dvbnet->device[num] = NULL; | |
1340 | free_netdev(net); | |
1341 | ||
1342 | return 0; | |
1343 | } | |
1344 | ||
16ef8def | 1345 | static int dvb_net_do_ioctl(struct file *file, |
1da177e4 LT |
1346 | unsigned int cmd, void *parg) |
1347 | { | |
0c53c70f JS |
1348 | struct dvb_device *dvbdev = file->private_data; |
1349 | struct dvb_net *dvbnet = dvbdev->priv; | |
30ad64b8 | 1350 | int ret = 0; |
1da177e4 LT |
1351 | |
1352 | if (((file->f_flags&O_ACCMODE)==O_RDONLY)) | |
1353 | return -EPERM; | |
1354 | ||
30ad64b8 NS |
1355 | if (mutex_lock_interruptible(&dvbnet->ioctl_mutex)) |
1356 | return -ERESTARTSYS; | |
1357 | ||
1da177e4 LT |
1358 | switch (cmd) { |
1359 | case NET_ADD_IF: | |
1360 | { | |
0c53c70f | 1361 | struct dvb_net_if *dvbnetif = parg; |
1da177e4 LT |
1362 | int result; |
1363 | ||
30ad64b8 NS |
1364 | if (!capable(CAP_SYS_ADMIN)) { |
1365 | ret = -EPERM; | |
1366 | goto ioctl_error; | |
1367 | } | |
1da177e4 | 1368 | |
30ad64b8 NS |
1369 | if (!try_module_get(dvbdev->adapter->module)) { |
1370 | ret = -EPERM; | |
1371 | goto ioctl_error; | |
1372 | } | |
1da177e4 LT |
1373 | |
1374 | result=dvb_net_add_if(dvbnet, dvbnetif->pid, dvbnetif->feedtype); | |
1375 | if (result<0) { | |
1376 | module_put(dvbdev->adapter->module); | |
30ad64b8 NS |
1377 | ret = result; |
1378 | goto ioctl_error; | |
1da177e4 LT |
1379 | } |
1380 | dvbnetif->if_num=result; | |
1381 | break; | |
1382 | } | |
1383 | case NET_GET_IF: | |
1384 | { | |
1385 | struct net_device *netdev; | |
1386 | struct dvb_net_priv *priv_data; | |
0c53c70f | 1387 | struct dvb_net_if *dvbnetif = parg; |
1da177e4 LT |
1388 | |
1389 | if (dvbnetif->if_num >= DVB_NET_DEVICES_MAX || | |
30ad64b8 NS |
1390 | !dvbnet->state[dvbnetif->if_num]) { |
1391 | ret = -EINVAL; | |
1392 | goto ioctl_error; | |
1393 | } | |
1da177e4 LT |
1394 | |
1395 | netdev = dvbnet->device[dvbnetif->if_num]; | |
1396 | ||
0eade1f9 | 1397 | priv_data = netdev_priv(netdev); |
1da177e4 LT |
1398 | dvbnetif->pid=priv_data->pid; |
1399 | dvbnetif->feedtype=priv_data->feedtype; | |
1400 | break; | |
1401 | } | |
1402 | case NET_REMOVE_IF: | |
1403 | { | |
30ad64b8 NS |
1404 | if (!capable(CAP_SYS_ADMIN)) { |
1405 | ret = -EPERM; | |
1406 | goto ioctl_error; | |
1407 | } | |
1408 | if ((unsigned long) parg >= DVB_NET_DEVICES_MAX) { | |
1409 | ret = -EINVAL; | |
1410 | goto ioctl_error; | |
1411 | } | |
e18828e4 | 1412 | ret = dvb_net_remove_if(dvbnet, (unsigned long) parg); |
1da177e4 LT |
1413 | if (!ret) |
1414 | module_put(dvbdev->adapter->module); | |
30ad64b8 | 1415 | break; |
1da177e4 LT |
1416 | } |
1417 | ||
06fe9fb4 | 1418 | /* binary compatibility cruft */ |
1da177e4 LT |
1419 | case __NET_ADD_IF_OLD: |
1420 | { | |
0c53c70f | 1421 | struct __dvb_net_if_old *dvbnetif = parg; |
1da177e4 LT |
1422 | int result; |
1423 | ||
30ad64b8 NS |
1424 | if (!capable(CAP_SYS_ADMIN)) { |
1425 | ret = -EPERM; | |
1426 | goto ioctl_error; | |
1427 | } | |
1da177e4 | 1428 | |
30ad64b8 NS |
1429 | if (!try_module_get(dvbdev->adapter->module)) { |
1430 | ret = -EPERM; | |
1431 | goto ioctl_error; | |
1432 | } | |
1da177e4 LT |
1433 | |
1434 | result=dvb_net_add_if(dvbnet, dvbnetif->pid, DVB_NET_FEEDTYPE_MPE); | |
1435 | if (result<0) { | |
1436 | module_put(dvbdev->adapter->module); | |
30ad64b8 NS |
1437 | ret = result; |
1438 | goto ioctl_error; | |
1da177e4 LT |
1439 | } |
1440 | dvbnetif->if_num=result; | |
1441 | break; | |
1442 | } | |
1443 | case __NET_GET_IF_OLD: | |
1444 | { | |
1445 | struct net_device *netdev; | |
1446 | struct dvb_net_priv *priv_data; | |
0c53c70f | 1447 | struct __dvb_net_if_old *dvbnetif = parg; |
1da177e4 LT |
1448 | |
1449 | if (dvbnetif->if_num >= DVB_NET_DEVICES_MAX || | |
30ad64b8 NS |
1450 | !dvbnet->state[dvbnetif->if_num]) { |
1451 | ret = -EINVAL; | |
1452 | goto ioctl_error; | |
1453 | } | |
1da177e4 LT |
1454 | |
1455 | netdev = dvbnet->device[dvbnetif->if_num]; | |
1456 | ||
0eade1f9 | 1457 | priv_data = netdev_priv(netdev); |
1da177e4 LT |
1458 | dvbnetif->pid=priv_data->pid; |
1459 | break; | |
1460 | } | |
1461 | default: | |
30ad64b8 NS |
1462 | ret = -ENOTTY; |
1463 | break; | |
1da177e4 | 1464 | } |
30ad64b8 NS |
1465 | |
1466 | ioctl_error: | |
1467 | mutex_unlock(&dvbnet->ioctl_mutex); | |
1468 | return ret; | |
1da177e4 LT |
1469 | } |
1470 | ||
16ef8def | 1471 | static long dvb_net_ioctl(struct file *file, |
1da177e4 LT |
1472 | unsigned int cmd, unsigned long arg) |
1473 | { | |
72024f1e | 1474 | return dvb_usercopy(file, cmd, arg, dvb_net_do_ioctl); |
1da177e4 LT |
1475 | } |
1476 | ||
2c4d3364 MR |
1477 | static int dvb_net_close(struct inode *inode, struct file *file) |
1478 | { | |
1479 | struct dvb_device *dvbdev = file->private_data; | |
1480 | struct dvb_net *dvbnet = dvbdev->priv; | |
1481 | ||
82e67246 | 1482 | dvb_generic_release(inode, file); |
2c4d3364 | 1483 | |
7caf2184 | 1484 | if(dvbdev->users == 1 && dvbnet->exit == 1) |
2c4d3364 | 1485 | wake_up(&dvbdev->wait_queue); |
2c4d3364 MR |
1486 | return 0; |
1487 | } | |
1488 | ||
1489 | ||
784e29d2 | 1490 | static const struct file_operations dvb_net_fops = { |
1da177e4 | 1491 | .owner = THIS_MODULE, |
16ef8def | 1492 | .unlocked_ioctl = dvb_net_ioctl, |
1da177e4 | 1493 | .open = dvb_generic_open, |
2c4d3364 | 1494 | .release = dvb_net_close, |
6038f373 | 1495 | .llseek = noop_llseek, |
1da177e4 LT |
1496 | }; |
1497 | ||
1498 | static struct dvb_device dvbdev_net = { | |
afd1a0c9 MCC |
1499 | .priv = NULL, |
1500 | .users = 1, | |
1501 | .writers = 1, | |
1502 | .fops = &dvb_net_fops, | |
1da177e4 LT |
1503 | }; |
1504 | ||
1505 | ||
1506 | void dvb_net_release (struct dvb_net *dvbnet) | |
1507 | { | |
1508 | int i; | |
1509 | ||
2c4d3364 MR |
1510 | dvbnet->exit = 1; |
1511 | if (dvbnet->dvbdev->users < 1) | |
1512 | wait_event(dvbnet->dvbdev->wait_queue, | |
1513 | dvbnet->dvbdev->users==1); | |
1514 | ||
1da177e4 LT |
1515 | dvb_unregister_device(dvbnet->dvbdev); |
1516 | ||
1517 | for (i=0; i<DVB_NET_DEVICES_MAX; i++) { | |
1518 | if (!dvbnet->state[i]) | |
1519 | continue; | |
1520 | dvb_net_remove_if(dvbnet, i); | |
1521 | } | |
1522 | } | |
1523 | EXPORT_SYMBOL(dvb_net_release); | |
1524 | ||
1525 | ||
1526 | int dvb_net_init (struct dvb_adapter *adap, struct dvb_net *dvbnet, | |
1527 | struct dmx_demux *dmx) | |
1528 | { | |
1529 | int i; | |
1530 | ||
30ad64b8 | 1531 | mutex_init(&dvbnet->ioctl_mutex); |
1da177e4 LT |
1532 | dvbnet->demux = dmx; |
1533 | ||
1534 | for (i=0; i<DVB_NET_DEVICES_MAX; i++) | |
1535 | dvbnet->state[i] = 0; | |
1536 | ||
58fae673 | 1537 | return dvb_register_device(adap, &dvbnet->dvbdev, &dvbdev_net, |
1da177e4 | 1538 | dvbnet, DVB_DEVICE_NET); |
1da177e4 LT |
1539 | } |
1540 | EXPORT_SYMBOL(dvb_net_init); |