diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/media/dvb/dvb-core/dvb_net.c |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/media/dvb/dvb-core/dvb_net.c')
-rw-r--r-- | drivers/media/dvb/dvb-core/dvb_net.c | 1381 |
1 files changed, 1381 insertions, 0 deletions
diff --git a/drivers/media/dvb/dvb-core/dvb_net.c b/drivers/media/dvb/dvb-core/dvb_net.c new file mode 100644 index 00000000000..44892e7abd3 --- /dev/null +++ b/drivers/media/dvb/dvb-core/dvb_net.c | |||
@@ -0,0 +1,1381 @@ | |||
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 | * | ||
15 | * ULE Decaps according to draft-ietf-ipdvb-ule-03.txt. | ||
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. | ||
45 | */ | ||
46 | |||
47 | /* | ||
48 | * FIXME / TODO (dvb_net.c): | ||
49 | * | ||
50 | * Unloading does not work for 2.6.9 kernels: a refcount doesn't go to zero. | ||
51 | * | ||
52 | * TS_FEED callback is called once for every single TS cell although it is | ||
53 | * registered (in dvb_net_feed_start()) for 100 TS cells (used for dvb_net_ule()). | ||
54 | * | ||
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> | ||
65 | #include <linux/version.h> | ||
66 | |||
67 | #include "dvb_demux.h" | ||
68 | #include "dvb_net.h" | ||
69 | |||
70 | static int dvb_net_debug; | ||
71 | module_param(dvb_net_debug, int, 0444); | ||
72 | MODULE_PARM_DESC(dvb_net_debug, "enable debug messages"); | ||
73 | |||
74 | #define dprintk(x...) do { if (dvb_net_debug) printk(x); } while (0) | ||
75 | |||
76 | |||
77 | static inline __u32 iov_crc32( __u32 c, struct kvec *iov, unsigned int cnt ) | ||
78 | { | ||
79 | unsigned int j; | ||
80 | for (j = 0; j < cnt; j++) | ||
81 | c = crc32_be( c, iov[j].iov_base, iov[j].iov_len ); | ||
82 | return c; | ||
83 | } | ||
84 | |||
85 | |||
86 | #define DVB_NET_MULTICAST_MAX 10 | ||
87 | |||
88 | #undef ULE_DEBUG | ||
89 | |||
90 | #ifdef ULE_DEBUG | ||
91 | |||
92 | #define isprint(c) ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9')) | ||
93 | |||
94 | static void hexdump( const unsigned char *buf, unsigned short len ) | ||
95 | { | ||
96 | char str[80], octet[10]; | ||
97 | int ofs, i, l; | ||
98 | |||
99 | for (ofs = 0; ofs < len; ofs += 16) { | ||
100 | sprintf( str, "%03d: ", ofs ); | ||
101 | |||
102 | for (i = 0; i < 16; i++) { | ||
103 | if ((i + ofs) < len) | ||
104 | sprintf( octet, "%02x ", buf[ofs + i] ); | ||
105 | else | ||
106 | strcpy( octet, " " ); | ||
107 | |||
108 | strcat( str, octet ); | ||
109 | } | ||
110 | strcat( str, " " ); | ||
111 | l = strlen( str ); | ||
112 | |||
113 | for (i = 0; (i < 16) && ((i + ofs) < len); i++) | ||
114 | str[l++] = isprint( buf[ofs + i] ) ? buf[ofs + i] : '.'; | ||
115 | |||
116 | str[l] = '\0'; | ||
117 | printk( KERN_WARNING "%s\n", str ); | ||
118 | } | ||
119 | } | ||
120 | |||
121 | #endif | ||
122 | |||
123 | struct dvb_net_priv { | ||
124 | int in_use; | ||
125 | struct net_device_stats stats; | ||
126 | u16 pid; | ||
127 | struct dvb_net *host; | ||
128 | struct dmx_demux *demux; | ||
129 | struct dmx_section_feed *secfeed; | ||
130 | struct dmx_section_filter *secfilter; | ||
131 | struct dmx_ts_feed *tsfeed; | ||
132 | int multi_num; | ||
133 | struct dmx_section_filter *multi_secfilter[DVB_NET_MULTICAST_MAX]; | ||
134 | unsigned char multi_macs[DVB_NET_MULTICAST_MAX][6]; | ||
135 | int rx_mode; | ||
136 | #define RX_MODE_UNI 0 | ||
137 | #define RX_MODE_MULTI 1 | ||
138 | #define RX_MODE_ALL_MULTI 2 | ||
139 | #define RX_MODE_PROMISC 3 | ||
140 | struct work_struct set_multicast_list_wq; | ||
141 | struct work_struct restart_net_feed_wq; | ||
142 | unsigned char feedtype; /* Either FEED_TYPE_ or FEED_TYPE_ULE */ | ||
143 | int need_pusi; /* Set to 1, if synchronization on PUSI required. */ | ||
144 | unsigned char tscc; /* TS continuity counter after sync on PUSI. */ | ||
145 | struct sk_buff *ule_skb; /* ULE SNDU decodes into this buffer. */ | ||
146 | unsigned char *ule_next_hdr; /* Pointer into skb to next ULE extension header. */ | ||
147 | unsigned short ule_sndu_len; /* ULE SNDU length in bytes, w/o D-Bit. */ | ||
148 | unsigned short ule_sndu_type; /* ULE SNDU type field, complete. */ | ||
149 | unsigned char ule_sndu_type_1; /* ULE SNDU type field, if split across 2 TS cells. */ | ||
150 | unsigned char ule_dbit; /* Whether the DestMAC address present | ||
151 | * or not (bit is set). */ | ||
152 | unsigned char ule_bridged; /* Whether the ULE_BRIDGED extension header was found. */ | ||
153 | int ule_sndu_remain; /* Nr. of bytes still required for current ULE SNDU. */ | ||
154 | unsigned long ts_count; /* Current ts cell counter. */ | ||
155 | }; | ||
156 | |||
157 | |||
158 | /** | ||
159 | * Determine the packet's protocol ID. The rule here is that we | ||
160 | * assume 802.3 if the type field is short enough to be a length. | ||
161 | * This is normal practice and works for any 'now in use' protocol. | ||
162 | * | ||
163 | * stolen from eth.c out of the linux kernel, hacked for dvb-device | ||
164 | * by Michael Holzt <kju@debian.org> | ||
165 | */ | ||
166 | static unsigned short dvb_net_eth_type_trans(struct sk_buff *skb, | ||
167 | struct net_device *dev) | ||
168 | { | ||
169 | struct ethhdr *eth; | ||
170 | unsigned char *rawp; | ||
171 | |||
172 | skb->mac.raw=skb->data; | ||
173 | skb_pull(skb,dev->hard_header_len); | ||
174 | #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,8) | ||
175 | eth = skb->mac.ethernet; | ||
176 | #else | ||
177 | eth = eth_hdr(skb); | ||
178 | #endif | ||
179 | |||
180 | if (*eth->h_dest & 1) { | ||
181 | if(memcmp(eth->h_dest,dev->broadcast, ETH_ALEN)==0) | ||
182 | skb->pkt_type=PACKET_BROADCAST; | ||
183 | else | ||
184 | skb->pkt_type=PACKET_MULTICAST; | ||
185 | } | ||
186 | |||
187 | if (ntohs(eth->h_proto) >= 1536) | ||
188 | return eth->h_proto; | ||
189 | |||
190 | rawp = skb->data; | ||
191 | |||
192 | /** | ||
193 | * This is a magic hack to spot IPX packets. Older Novell breaks | ||
194 | * the protocol design and runs IPX over 802.3 without an 802.2 LLC | ||
195 | * layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This | ||
196 | * won't work for fault tolerant netware but does for the rest. | ||
197 | */ | ||
198 | if (*(unsigned short *)rawp == 0xFFFF) | ||
199 | return htons(ETH_P_802_3); | ||
200 | |||
201 | /** | ||
202 | * Real 802.2 LLC | ||
203 | */ | ||
204 | return htons(ETH_P_802_2); | ||
205 | } | ||
206 | |||
207 | #define TS_SZ 188 | ||
208 | #define TS_SYNC 0x47 | ||
209 | #define TS_TEI 0x80 | ||
210 | #define TS_SC 0xC0 | ||
211 | #define TS_PUSI 0x40 | ||
212 | #define TS_AF_A 0x20 | ||
213 | #define TS_AF_D 0x10 | ||
214 | |||
215 | /* ULE Extension Header handlers. */ | ||
216 | |||
217 | #define ULE_TEST 0 | ||
218 | #define ULE_BRIDGED 1 | ||
219 | |||
220 | static int ule_test_sndu( struct dvb_net_priv *p ) | ||
221 | { | ||
222 | return -1; | ||
223 | } | ||
224 | |||
225 | static int ule_bridged_sndu( struct dvb_net_priv *p ) | ||
226 | { | ||
227 | /* BRIDGE SNDU handling sucks in draft-ietf-ipdvb-ule-03.txt. | ||
228 | * This has to be the last extension header, otherwise it won't work. | ||
229 | * Blame the authors! | ||
230 | */ | ||
231 | p->ule_bridged = 1; | ||
232 | return 0; | ||
233 | } | ||
234 | |||
235 | |||
236 | /** Handle ULE extension headers. | ||
237 | * Function is called after a successful CRC32 verification of an ULE SNDU to complete its decoding. | ||
238 | * Returns: >= 0: nr. of bytes consumed by next extension header | ||
239 | * -1: Mandatory extension header that is not recognized or TEST SNDU; discard. | ||
240 | */ | ||
241 | static int handle_one_ule_extension( struct dvb_net_priv *p ) | ||
242 | { | ||
243 | /* Table of mandatory extension header handlers. The header type is the index. */ | ||
244 | static int (*ule_mandatory_ext_handlers[255])( struct dvb_net_priv *p ) = | ||
245 | { [0] = ule_test_sndu, [1] = ule_bridged_sndu, [2] = NULL, }; | ||
246 | |||
247 | /* Table of optional extension header handlers. The header type is the index. */ | ||
248 | static int (*ule_optional_ext_handlers[255])( struct dvb_net_priv *p ) = { NULL, }; | ||
249 | |||
250 | int ext_len = 0; | ||
251 | unsigned char hlen = (p->ule_sndu_type & 0x0700) >> 8; | ||
252 | unsigned char htype = p->ule_sndu_type & 0x00FF; | ||
253 | |||
254 | /* Discriminate mandatory and optional extension headers. */ | ||
255 | if (hlen == 0) { | ||
256 | /* Mandatory extension header */ | ||
257 | if (ule_mandatory_ext_handlers[htype]) { | ||
258 | ext_len = ule_mandatory_ext_handlers[htype]( p ); | ||
259 | p->ule_next_hdr += ext_len; | ||
260 | if (! p->ule_bridged) { | ||
261 | p->ule_sndu_type = ntohs( *(unsigned short *)p->ule_next_hdr ); | ||
262 | p->ule_next_hdr += 2; | ||
263 | } else { | ||
264 | p->ule_sndu_type = ntohs( *(unsigned short *)(p->ule_next_hdr + ((p->ule_dbit ? 2 : 3) * ETH_ALEN)) ); | ||
265 | /* This assures the extension handling loop will terminate. */ | ||
266 | } | ||
267 | } else | ||
268 | ext_len = -1; /* SNDU has to be discarded. */ | ||
269 | } else { | ||
270 | /* Optional extension header. Calculate the length. */ | ||
271 | ext_len = hlen << 2; | ||
272 | /* Process the optional extension header according to its type. */ | ||
273 | if (ule_optional_ext_handlers[htype]) | ||
274 | (void)ule_optional_ext_handlers[htype]( p ); | ||
275 | p->ule_next_hdr += ext_len; | ||
276 | p->ule_sndu_type = ntohs( *(unsigned short *)p->ule_next_hdr ); | ||
277 | p->ule_next_hdr += 2; | ||
278 | } | ||
279 | |||
280 | return ext_len; | ||
281 | } | ||
282 | |||
283 | static int handle_ule_extensions( struct dvb_net_priv *p ) | ||
284 | { | ||
285 | int total_ext_len = 0, l; | ||
286 | |||
287 | p->ule_next_hdr = p->ule_skb->data; | ||
288 | do { | ||
289 | l = handle_one_ule_extension( p ); | ||
290 | if (l == -1) return -1; /* Stop extension header processing and discard SNDU. */ | ||
291 | total_ext_len += l; | ||
292 | |||
293 | } while (p->ule_sndu_type < 1536); | ||
294 | |||
295 | return total_ext_len; | ||
296 | } | ||
297 | |||
298 | |||
299 | /** Prepare for a new ULE SNDU: reset the decoder state. */ | ||
300 | static inline void reset_ule( struct dvb_net_priv *p ) | ||
301 | { | ||
302 | p->ule_skb = NULL; | ||
303 | p->ule_next_hdr = NULL; | ||
304 | p->ule_sndu_len = 0; | ||
305 | p->ule_sndu_type = 0; | ||
306 | p->ule_sndu_type_1 = 0; | ||
307 | p->ule_sndu_remain = 0; | ||
308 | p->ule_dbit = 0xFF; | ||
309 | p->ule_bridged = 0; | ||
310 | } | ||
311 | |||
312 | /** | ||
313 | * Decode ULE SNDUs according to draft-ietf-ipdvb-ule-03.txt from a sequence of | ||
314 | * TS cells of a single PID. | ||
315 | */ | ||
316 | static void dvb_net_ule( struct net_device *dev, const u8 *buf, size_t buf_len ) | ||
317 | { | ||
318 | struct dvb_net_priv *priv = (struct dvb_net_priv *)dev->priv; | ||
319 | unsigned long skipped = 0L; | ||
320 | u8 *ts, *ts_end, *from_where = NULL, ts_remain = 0, how_much = 0, new_ts = 1; | ||
321 | struct ethhdr *ethh = NULL; | ||
322 | |||
323 | #ifdef ULE_DEBUG | ||
324 | /* The code inside ULE_DEBUG keeps a history of the last 100 TS cells processed. */ | ||
325 | static unsigned char ule_hist[100*TS_SZ]; | ||
326 | static unsigned char *ule_where = ule_hist, ule_dump = 0; | ||
327 | #endif | ||
328 | |||
329 | if (dev == NULL) { | ||
330 | printk( KERN_ERR "NO netdev struct!\n" ); | ||
331 | return; | ||
332 | } | ||
333 | |||
334 | /* For all TS cells in current buffer. | ||
335 | * Appearently, we are called for every single TS cell. | ||
336 | */ | ||
337 | for (ts = (char *)buf, ts_end = (char *)buf + buf_len; ts < ts_end; /* no default incr. */ ) { | ||
338 | |||
339 | if (new_ts) { | ||
340 | /* We are about to process a new TS cell. */ | ||
341 | |||
342 | #ifdef ULE_DEBUG | ||
343 | if (ule_where >= &ule_hist[100*TS_SZ]) ule_where = ule_hist; | ||
344 | memcpy( ule_where, ts, TS_SZ ); | ||
345 | if (ule_dump) { | ||
346 | hexdump( ule_where, TS_SZ ); | ||
347 | ule_dump = 0; | ||
348 | } | ||
349 | ule_where += TS_SZ; | ||
350 | #endif | ||
351 | |||
352 | /* Check TS error conditions: sync_byte, transport_error_indicator, scrambling_control . */ | ||
353 | if ((ts[0] != TS_SYNC) || (ts[1] & TS_TEI) || ((ts[3] & TS_SC) != 0)) { | ||
354 | printk(KERN_WARNING "%lu: Invalid TS cell: SYNC %#x, TEI %u, SC %#x.\n", | ||
355 | priv->ts_count, ts[0], ts[1] & TS_TEI >> 7, ts[3] & 0xC0 >> 6); | ||
356 | |||
357 | /* Drop partly decoded SNDU, reset state, resync on PUSI. */ | ||
358 | if (priv->ule_skb) { | ||
359 | dev_kfree_skb( priv->ule_skb ); | ||
360 | /* Prepare for next SNDU. */ | ||
361 | ((struct dvb_net_priv *) dev->priv)->stats.rx_errors++; | ||
362 | ((struct dvb_net_priv *) dev->priv)->stats.rx_frame_errors++; | ||
363 | } | ||
364 | reset_ule(priv); | ||
365 | priv->need_pusi = 1; | ||
366 | |||
367 | /* Continue with next TS cell. */ | ||
368 | ts += TS_SZ; | ||
369 | priv->ts_count++; | ||
370 | continue; | ||
371 | } | ||
372 | |||
373 | ts_remain = 184; | ||
374 | from_where = ts + 4; | ||
375 | } | ||
376 | /* Synchronize on PUSI, if required. */ | ||
377 | if (priv->need_pusi) { | ||
378 | if (ts[1] & TS_PUSI) { | ||
379 | /* Find beginning of first ULE SNDU in current TS cell. */ | ||
380 | /* Synchronize continuity counter. */ | ||
381 | priv->tscc = ts[3] & 0x0F; | ||
382 | /* There is a pointer field here. */ | ||
383 | if (ts[4] > ts_remain) { | ||
384 | printk(KERN_ERR "%lu: Invalid ULE packet " | ||
385 | "(pointer field %d)\n", priv->ts_count, ts[4]); | ||
386 | ts += TS_SZ; | ||
387 | priv->ts_count++; | ||
388 | continue; | ||
389 | } | ||
390 | /* Skip to destination of pointer field. */ | ||
391 | from_where = &ts[5] + ts[4]; | ||
392 | ts_remain -= 1 + ts[4]; | ||
393 | skipped = 0; | ||
394 | } else { | ||
395 | skipped++; | ||
396 | ts += TS_SZ; | ||
397 | priv->ts_count++; | ||
398 | continue; | ||
399 | } | ||
400 | } | ||
401 | |||
402 | /* Check continuity counter. */ | ||
403 | if (new_ts) { | ||
404 | if ((ts[3] & 0x0F) == priv->tscc) | ||
405 | priv->tscc = (priv->tscc + 1) & 0x0F; | ||
406 | else { | ||
407 | /* TS discontinuity handling: */ | ||
408 | printk(KERN_WARNING "%lu: TS discontinuity: got %#x, " | ||
409 | "exptected %#x.\n", priv->ts_count, ts[3] & 0x0F, priv->tscc); | ||
410 | /* Drop partly decoded SNDU, reset state, resync on PUSI. */ | ||
411 | if (priv->ule_skb) { | ||
412 | dev_kfree_skb( priv->ule_skb ); | ||
413 | /* Prepare for next SNDU. */ | ||
414 | // reset_ule(priv); moved to below. | ||
415 | ((struct dvb_net_priv *) dev->priv)->stats.rx_errors++; | ||
416 | ((struct dvb_net_priv *) dev->priv)->stats.rx_frame_errors++; | ||
417 | } | ||
418 | reset_ule(priv); | ||
419 | /* skip to next PUSI. */ | ||
420 | priv->need_pusi = 1; | ||
421 | ts += TS_SZ; | ||
422 | priv->ts_count++; | ||
423 | continue; | ||
424 | } | ||
425 | /* If we still have an incomplete payload, but PUSI is | ||
426 | * set; some TS cells are missing. | ||
427 | * This is only possible here, if we missed exactly 16 TS | ||
428 | * cells (continuity counter wrap). */ | ||
429 | if (ts[1] & TS_PUSI) { | ||
430 | if (! priv->need_pusi) { | ||
431 | if (*from_where > 181) { | ||
432 | /* Pointer field is invalid. Drop this TS cell and any started ULE SNDU. */ | ||
433 | printk(KERN_WARNING "%lu: Invalid pointer " | ||
434 | "field: %u.\n", priv->ts_count, *from_where); | ||
435 | |||
436 | /* Drop partly decoded SNDU, reset state, resync on PUSI. */ | ||
437 | if (priv->ule_skb) { | ||
438 | dev_kfree_skb( priv->ule_skb ); | ||
439 | ((struct dvb_net_priv *) dev->priv)->stats.rx_errors++; | ||
440 | ((struct dvb_net_priv *) dev->priv)->stats.rx_frame_errors++; | ||
441 | } | ||
442 | reset_ule(priv); | ||
443 | priv->need_pusi = 1; | ||
444 | ts += TS_SZ; | ||
445 | priv->ts_count++; | ||
446 | continue; | ||
447 | } | ||
448 | /* Skip pointer field (we're processing a | ||
449 | * packed payload). */ | ||
450 | from_where += 1; | ||
451 | ts_remain -= 1; | ||
452 | } else | ||
453 | priv->need_pusi = 0; | ||
454 | |||
455 | if (priv->ule_sndu_remain > 183) { | ||
456 | /* Current SNDU lacks more data than there could be available in the | ||
457 | * current TS cell. */ | ||
458 | ((struct dvb_net_priv *) dev->priv)->stats.rx_errors++; | ||
459 | ((struct dvb_net_priv *) dev->priv)->stats.rx_length_errors++; | ||
460 | printk(KERN_WARNING "%lu: Expected %d more SNDU bytes, but " | ||
461 | "got PUSI (pf %d, ts_remain %d). Flushing incomplete payload.\n", | ||
462 | priv->ts_count, priv->ule_sndu_remain, ts[4], ts_remain); | ||
463 | dev_kfree_skb(priv->ule_skb); | ||
464 | /* Prepare for next SNDU. */ | ||
465 | reset_ule(priv); | ||
466 | /* Resync: go to where pointer field points to: start of next ULE SNDU. */ | ||
467 | from_where += ts[4]; | ||
468 | ts_remain -= ts[4]; | ||
469 | } | ||
470 | } | ||
471 | } | ||
472 | |||
473 | /* Check if new payload needs to be started. */ | ||
474 | if (priv->ule_skb == NULL) { | ||
475 | /* Start a new payload with skb. | ||
476 | * Find ULE header. It is only guaranteed that the | ||
477 | * length field (2 bytes) is contained in the current | ||
478 | * TS. | ||
479 | * Check ts_remain has to be >= 2 here. */ | ||
480 | if (ts_remain < 2) { | ||
481 | printk(KERN_WARNING "Invalid payload packing: only %d " | ||
482 | "bytes left in TS. Resyncing.\n", ts_remain); | ||
483 | priv->ule_sndu_len = 0; | ||
484 | priv->need_pusi = 1; | ||
485 | continue; | ||
486 | } | ||
487 | |||
488 | if (! priv->ule_sndu_len) { | ||
489 | /* Got at least two bytes, thus extrace the SNDU length. */ | ||
490 | priv->ule_sndu_len = from_where[0] << 8 | from_where[1]; | ||
491 | if (priv->ule_sndu_len & 0x8000) { | ||
492 | /* D-Bit is set: no dest mac present. */ | ||
493 | priv->ule_sndu_len &= 0x7FFF; | ||
494 | priv->ule_dbit = 1; | ||
495 | } else | ||
496 | priv->ule_dbit = 0; | ||
497 | |||
498 | if (priv->ule_sndu_len > 32763) { | ||
499 | printk(KERN_WARNING "%lu: Invalid ULE SNDU length %u. " | ||
500 | "Resyncing.\n", priv->ts_count, priv->ule_sndu_len); | ||
501 | priv->ule_sndu_len = 0; | ||
502 | priv->need_pusi = 1; | ||
503 | new_ts = 1; | ||
504 | ts += TS_SZ; | ||
505 | priv->ts_count++; | ||
506 | continue; | ||
507 | } | ||
508 | ts_remain -= 2; /* consume the 2 bytes SNDU length. */ | ||
509 | from_where += 2; | ||
510 | } | ||
511 | |||
512 | /* | ||
513 | * State of current TS: | ||
514 | * ts_remain (remaining bytes in the current TS cell) | ||
515 | * 0 ule_type is not available now, we need the next TS cell | ||
516 | * 1 the first byte of the ule_type is present | ||
517 | * >=2 full ULE header present, maybe some payload data as well. | ||
518 | */ | ||
519 | switch (ts_remain) { | ||
520 | case 1: | ||
521 | priv->ule_sndu_type = from_where[0] << 8; | ||
522 | priv->ule_sndu_type_1 = 1; /* first byte of ule_type is set. */ | ||
523 | ts_remain -= 1; from_where += 1; | ||
524 | /* Continue w/ next TS. */ | ||
525 | case 0: | ||
526 | new_ts = 1; | ||
527 | ts += TS_SZ; | ||
528 | priv->ts_count++; | ||
529 | continue; | ||
530 | |||
531 | default: /* complete ULE header is present in current TS. */ | ||
532 | /* Extract ULE type field. */ | ||
533 | if (priv->ule_sndu_type_1) { | ||
534 | priv->ule_sndu_type |= from_where[0]; | ||
535 | from_where += 1; /* points to payload start. */ | ||
536 | ts_remain -= 1; | ||
537 | } else { | ||
538 | /* Complete type is present in new TS. */ | ||
539 | priv->ule_sndu_type = from_where[0] << 8 | from_where[1]; | ||
540 | from_where += 2; /* points to payload start. */ | ||
541 | ts_remain -= 2; | ||
542 | } | ||
543 | break; | ||
544 | } | ||
545 | |||
546 | /* Allocate the skb (decoder target buffer) with the correct size, as follows: | ||
547 | * prepare for the largest case: bridged SNDU with MAC address (dbit = 0). */ | ||
548 | priv->ule_skb = dev_alloc_skb( priv->ule_sndu_len + ETH_HLEN + ETH_ALEN ); | ||
549 | if (priv->ule_skb == NULL) { | ||
550 | printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", | ||
551 | dev->name); | ||
552 | ((struct dvb_net_priv *)dev->priv)->stats.rx_dropped++; | ||
553 | return; | ||
554 | } | ||
555 | |||
556 | /* This includes the CRC32 _and_ dest mac, if !dbit. */ | ||
557 | priv->ule_sndu_remain = priv->ule_sndu_len; | ||
558 | priv->ule_skb->dev = dev; | ||
559 | /* Leave space for Ethernet or bridged SNDU header (eth hdr plus one MAC addr). */ | ||
560 | skb_reserve( priv->ule_skb, ETH_HLEN + ETH_ALEN ); | ||
561 | } | ||
562 | |||
563 | /* Copy data into our current skb. */ | ||
564 | how_much = min(priv->ule_sndu_remain, (int)ts_remain); | ||
565 | memcpy(skb_put(priv->ule_skb, how_much), from_where, how_much); | ||
566 | priv->ule_sndu_remain -= how_much; | ||
567 | ts_remain -= how_much; | ||
568 | from_where += how_much; | ||
569 | |||
570 | /* Check for complete payload. */ | ||
571 | if (priv->ule_sndu_remain <= 0) { | ||
572 | /* Check CRC32, we've got it in our skb already. */ | ||
573 | unsigned short ulen = htons(priv->ule_sndu_len); | ||
574 | unsigned short utype = htons(priv->ule_sndu_type); | ||
575 | struct kvec iov[3] = { | ||
576 | { &ulen, sizeof ulen }, | ||
577 | { &utype, sizeof utype }, | ||
578 | { priv->ule_skb->data, priv->ule_skb->len - 4 } | ||
579 | }; | ||
580 | unsigned long ule_crc = ~0L, expected_crc; | ||
581 | if (priv->ule_dbit) { | ||
582 | /* Set D-bit for CRC32 verification, | ||
583 | * if it was set originally. */ | ||
584 | ulen |= 0x0080; | ||
585 | } | ||
586 | |||
587 | ule_crc = iov_crc32(ule_crc, iov, 3); | ||
588 | expected_crc = *((u8 *)priv->ule_skb->tail - 4) << 24 | | ||
589 | *((u8 *)priv->ule_skb->tail - 3) << 16 | | ||
590 | *((u8 *)priv->ule_skb->tail - 2) << 8 | | ||
591 | *((u8 *)priv->ule_skb->tail - 1); | ||
592 | if (ule_crc != expected_crc) { | ||
593 | printk(KERN_WARNING "%lu: CRC32 check FAILED: %#lx / %#lx, SNDU len %d type %#x, ts_remain %d, next 2: %x.\n", | ||
594 | 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); | ||
595 | |||
596 | #ifdef ULE_DEBUG | ||
597 | hexdump( iov[0].iov_base, iov[0].iov_len ); | ||
598 | hexdump( iov[1].iov_base, iov[1].iov_len ); | ||
599 | hexdump( iov[2].iov_base, iov[2].iov_len ); | ||
600 | |||
601 | if (ule_where == ule_hist) { | ||
602 | hexdump( &ule_hist[98*TS_SZ], TS_SZ ); | ||
603 | hexdump( &ule_hist[99*TS_SZ], TS_SZ ); | ||
604 | } else if (ule_where == &ule_hist[TS_SZ]) { | ||
605 | hexdump( &ule_hist[99*TS_SZ], TS_SZ ); | ||
606 | hexdump( ule_hist, TS_SZ ); | ||
607 | } else { | ||
608 | hexdump( ule_where - TS_SZ - TS_SZ, TS_SZ ); | ||
609 | hexdump( ule_where - TS_SZ, TS_SZ ); | ||
610 | } | ||
611 | ule_dump = 1; | ||
612 | #endif | ||
613 | |||
614 | ((struct dvb_net_priv *) dev->priv)->stats.rx_errors++; | ||
615 | ((struct dvb_net_priv *) dev->priv)->stats.rx_crc_errors++; | ||
616 | dev_kfree_skb(priv->ule_skb); | ||
617 | } else { | ||
618 | /* CRC32 verified OK. */ | ||
619 | /* Handle ULE Extension Headers. */ | ||
620 | if (priv->ule_sndu_type < 1536) { | ||
621 | /* There is an extension header. Handle it accordingly. */ | ||
622 | int l = handle_ule_extensions( priv ); | ||
623 | if (l < 0) { | ||
624 | /* Mandatory extension header unknown or TEST SNDU. Drop it. */ | ||
625 | // printk( KERN_WARNING "Dropping SNDU, extension headers.\n" ); | ||
626 | dev_kfree_skb( priv->ule_skb ); | ||
627 | goto sndu_done; | ||
628 | } | ||
629 | skb_pull( priv->ule_skb, l ); | ||
630 | } | ||
631 | |||
632 | /* CRC32 was OK. Remove it from skb. */ | ||
633 | priv->ule_skb->tail -= 4; | ||
634 | priv->ule_skb->len -= 4; | ||
635 | |||
636 | /* Filter on receiver's destination MAC address, if present. */ | ||
637 | if (!priv->ule_dbit) { | ||
638 | /* The destination MAC address is the next data in the skb. */ | ||
639 | if (memcmp( priv->ule_skb->data, dev->dev_addr, ETH_ALEN )) { | ||
640 | /* MAC addresses don't match. Drop SNDU. */ | ||
641 | // printk( KERN_WARNING "Dropping SNDU, MAC address.\n" ); | ||
642 | dev_kfree_skb( priv->ule_skb ); | ||
643 | goto sndu_done; | ||
644 | } | ||
645 | if (! priv->ule_bridged) { | ||
646 | skb_push( priv->ule_skb, ETH_ALEN + 2 ); | ||
647 | ethh = (struct ethhdr *)priv->ule_skb->data; | ||
648 | memcpy( ethh->h_dest, ethh->h_source, ETH_ALEN ); | ||
649 | memset( ethh->h_source, 0, ETH_ALEN ); | ||
650 | ethh->h_proto = htons( priv->ule_sndu_type ); | ||
651 | } else { | ||
652 | /* Skip the Receiver destination MAC address. */ | ||
653 | skb_pull( priv->ule_skb, ETH_ALEN ); | ||
654 | } | ||
655 | } else { | ||
656 | if (! priv->ule_bridged) { | ||
657 | skb_push( priv->ule_skb, ETH_HLEN ); | ||
658 | ethh = (struct ethhdr *)priv->ule_skb->data; | ||
659 | memcpy( ethh->h_dest, dev->dev_addr, ETH_ALEN ); | ||
660 | memset( ethh->h_source, 0, ETH_ALEN ); | ||
661 | ethh->h_proto = htons( priv->ule_sndu_type ); | ||
662 | } else { | ||
663 | /* skb is in correct state; nothing to do. */ | ||
664 | } | ||
665 | } | ||
666 | priv->ule_bridged = 0; | ||
667 | |||
668 | /* Stuff into kernel's protocol stack. */ | ||
669 | priv->ule_skb->protocol = dvb_net_eth_type_trans(priv->ule_skb, dev); | ||
670 | /* If D-bit is set (i.e. destination MAC address not present), | ||
671 | * receive the packet anyhow. */ | ||
672 | /* if (priv->ule_dbit && skb->pkt_type == PACKET_OTHERHOST) | ||
673 | priv->ule_skb->pkt_type = PACKET_HOST; */ | ||
674 | ((struct dvb_net_priv *) dev->priv)->stats.rx_packets++; | ||
675 | ((struct dvb_net_priv *) dev->priv)->stats.rx_bytes += priv->ule_skb->len; | ||
676 | netif_rx(priv->ule_skb); | ||
677 | } | ||
678 | sndu_done: | ||
679 | /* Prepare for next SNDU. */ | ||
680 | reset_ule(priv); | ||
681 | } | ||
682 | |||
683 | /* More data in current TS (look at the bytes following the CRC32)? */ | ||
684 | if (ts_remain >= 2 && *((unsigned short *)from_where) != 0xFFFF) { | ||
685 | /* Next ULE SNDU starts right there. */ | ||
686 | new_ts = 0; | ||
687 | priv->ule_skb = NULL; | ||
688 | priv->ule_sndu_type_1 = 0; | ||
689 | priv->ule_sndu_len = 0; | ||
690 | // printk(KERN_WARNING "More data in current TS: [%#x %#x %#x %#x]\n", | ||
691 | // *(from_where + 0), *(from_where + 1), | ||
692 | // *(from_where + 2), *(from_where + 3)); | ||
693 | // printk(KERN_WARNING "ts @ %p, stopped @ %p:\n", ts, from_where + 0); | ||
694 | // hexdump(ts, 188); | ||
695 | } else { | ||
696 | new_ts = 1; | ||
697 | ts += TS_SZ; | ||
698 | priv->ts_count++; | ||
699 | if (priv->ule_skb == NULL) { | ||
700 | priv->need_pusi = 1; | ||
701 | priv->ule_sndu_type_1 = 0; | ||
702 | priv->ule_sndu_len = 0; | ||
703 | } | ||
704 | } | ||
705 | } /* for all available TS cells */ | ||
706 | } | ||
707 | |||
708 | static int dvb_net_ts_callback(const u8 *buffer1, size_t buffer1_len, | ||
709 | const u8 *buffer2, size_t buffer2_len, | ||
710 | struct dmx_ts_feed *feed, enum dmx_success success) | ||
711 | { | ||
712 | struct net_device *dev = (struct net_device *)feed->priv; | ||
713 | |||
714 | if (buffer2 != 0) | ||
715 | printk(KERN_WARNING "buffer2 not 0: %p.\n", buffer2); | ||
716 | if (buffer1_len > 32768) | ||
717 | printk(KERN_WARNING "length > 32k: %zu.\n", buffer1_len); | ||
718 | /* printk("TS callback: %u bytes, %u TS cells @ %p.\n", | ||
719 | buffer1_len, buffer1_len / TS_SZ, buffer1); */ | ||
720 | dvb_net_ule(dev, buffer1, buffer1_len); | ||
721 | return 0; | ||
722 | } | ||
723 | |||
724 | |||
725 | static void dvb_net_sec(struct net_device *dev, u8 *pkt, int pkt_len) | ||
726 | { | ||
727 | u8 *eth; | ||
728 | struct sk_buff *skb; | ||
729 | struct net_device_stats *stats = &(((struct dvb_net_priv *) dev->priv)->stats); | ||
730 | |||
731 | /* note: pkt_len includes a 32bit checksum */ | ||
732 | if (pkt_len < 16) { | ||
733 | printk("%s: IP/MPE packet length = %d too small.\n", | ||
734 | dev->name, pkt_len); | ||
735 | stats->rx_errors++; | ||
736 | stats->rx_length_errors++; | ||
737 | return; | ||
738 | } | ||
739 | /* it seems some ISPs manage to screw up here, so we have to | ||
740 | * relax the error checks... */ | ||
741 | #if 0 | ||
742 | if ((pkt[5] & 0xfd) != 0xc1) { | ||
743 | /* drop scrambled or broken packets */ | ||
744 | #else | ||
745 | if ((pkt[5] & 0x3c) != 0x00) { | ||
746 | /* drop scrambled */ | ||
747 | #endif | ||
748 | stats->rx_errors++; | ||
749 | stats->rx_crc_errors++; | ||
750 | return; | ||
751 | } | ||
752 | if (pkt[5] & 0x02) { | ||
753 | //FIXME: handle LLC/SNAP | ||
754 | stats->rx_dropped++; | ||
755 | return; | ||
756 | } | ||
757 | if (pkt[7]) { | ||
758 | /* FIXME: assemble datagram from multiple sections */ | ||
759 | stats->rx_errors++; | ||
760 | stats->rx_frame_errors++; | ||
761 | return; | ||
762 | } | ||
763 | |||
764 | /* we have 14 byte ethernet header (ip header follows); | ||
765 | * 12 byte MPE header; 4 byte checksum; + 2 byte alignment | ||
766 | */ | ||
767 | if (!(skb = dev_alloc_skb(pkt_len - 4 - 12 + 14 + 2))) { | ||
768 | //printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name); | ||
769 | stats->rx_dropped++; | ||
770 | return; | ||
771 | } | ||
772 | skb_reserve(skb, 2); /* longword align L3 header */ | ||
773 | skb->dev = dev; | ||
774 | |||
775 | /* copy L3 payload */ | ||
776 | eth = (u8 *) skb_put(skb, pkt_len - 12 - 4 + 14); | ||
777 | memcpy(eth + 14, pkt + 12, pkt_len - 12 - 4); | ||
778 | |||
779 | /* create ethernet header: */ | ||
780 | eth[0]=pkt[0x0b]; | ||
781 | eth[1]=pkt[0x0a]; | ||
782 | eth[2]=pkt[0x09]; | ||
783 | eth[3]=pkt[0x08]; | ||
784 | eth[4]=pkt[0x04]; | ||
785 | eth[5]=pkt[0x03]; | ||
786 | |||
787 | eth[6]=eth[7]=eth[8]=eth[9]=eth[10]=eth[11]=0; | ||
788 | |||
789 | eth[12] = 0x08; /* ETH_P_IP */ | ||
790 | eth[13] = 0x00; | ||
791 | |||
792 | skb->protocol = dvb_net_eth_type_trans(skb, dev); | ||
793 | |||
794 | stats->rx_packets++; | ||
795 | stats->rx_bytes+=skb->len; | ||
796 | netif_rx(skb); | ||
797 | } | ||
798 | |||
799 | static int dvb_net_sec_callback(const u8 *buffer1, size_t buffer1_len, | ||
800 | const u8 *buffer2, size_t buffer2_len, | ||
801 | struct dmx_section_filter *filter, | ||
802 | enum dmx_success success) | ||
803 | { | ||
804 | struct net_device *dev=(struct net_device *) filter->priv; | ||
805 | |||
806 | /** | ||
807 | * we rely on the DVB API definition where exactly one complete | ||
808 | * section is delivered in buffer1 | ||
809 | */ | ||
810 | dvb_net_sec (dev, (u8*) buffer1, buffer1_len); | ||
811 | return 0; | ||
812 | } | ||
813 | |||
814 | static int dvb_net_tx(struct sk_buff *skb, struct net_device *dev) | ||
815 | { | ||
816 | dev_kfree_skb(skb); | ||
817 | return 0; | ||
818 | } | ||
819 | |||
820 | static u8 mask_normal[6]={0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; | ||
821 | static u8 mask_allmulti[6]={0xff, 0xff, 0xff, 0x00, 0x00, 0x00}; | ||
822 | static u8 mac_allmulti[6]={0x01, 0x00, 0x5e, 0x00, 0x00, 0x00}; | ||
823 | static u8 mask_promisc[6]={0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; | ||
824 | |||
825 | static int dvb_net_filter_sec_set(struct net_device *dev, | ||
826 | struct dmx_section_filter **secfilter, | ||
827 | u8 *mac, u8 *mac_mask) | ||
828 | { | ||
829 | struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv; | ||
830 | int ret; | ||
831 | |||
832 | *secfilter=NULL; | ||
833 | ret = priv->secfeed->allocate_filter(priv->secfeed, secfilter); | ||
834 | if (ret<0) { | ||
835 | printk("%s: could not get filter\n", dev->name); | ||
836 | return ret; | ||
837 | } | ||
838 | |||
839 | (*secfilter)->priv=(void *) dev; | ||
840 | |||
841 | memset((*secfilter)->filter_value, 0x00, DMX_MAX_FILTER_SIZE); | ||
842 | memset((*secfilter)->filter_mask, 0x00, DMX_MAX_FILTER_SIZE); | ||
843 | memset((*secfilter)->filter_mode, 0xff, DMX_MAX_FILTER_SIZE); | ||
844 | |||
845 | (*secfilter)->filter_value[0]=0x3e; | ||
846 | (*secfilter)->filter_value[3]=mac[5]; | ||
847 | (*secfilter)->filter_value[4]=mac[4]; | ||
848 | (*secfilter)->filter_value[8]=mac[3]; | ||
849 | (*secfilter)->filter_value[9]=mac[2]; | ||
850 | (*secfilter)->filter_value[10]=mac[1]; | ||
851 | (*secfilter)->filter_value[11]=mac[0]; | ||
852 | |||
853 | (*secfilter)->filter_mask[0] = 0xff; | ||
854 | (*secfilter)->filter_mask[3] = mac_mask[5]; | ||
855 | (*secfilter)->filter_mask[4] = mac_mask[4]; | ||
856 | (*secfilter)->filter_mask[8] = mac_mask[3]; | ||
857 | (*secfilter)->filter_mask[9] = mac_mask[2]; | ||
858 | (*secfilter)->filter_mask[10] = mac_mask[1]; | ||
859 | (*secfilter)->filter_mask[11]=mac_mask[0]; | ||
860 | |||
861 | dprintk("%s: filter mac=%02x %02x %02x %02x %02x %02x\n", | ||
862 | dev->name, mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); | ||
863 | dprintk("%s: filter mask=%02x %02x %02x %02x %02x %02x\n", | ||
864 | dev->name, mac_mask[0], mac_mask[1], mac_mask[2], | ||
865 | mac_mask[3], mac_mask[4], mac_mask[5]); | ||
866 | |||
867 | return 0; | ||
868 | } | ||
869 | |||
870 | static int dvb_net_feed_start(struct net_device *dev) | ||
871 | { | ||
872 | int ret, i; | ||
873 | struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv; | ||
874 | struct dmx_demux *demux = priv->demux; | ||
875 | unsigned char *mac = (unsigned char *) dev->dev_addr; | ||
876 | |||
877 | dprintk("%s: rx_mode %i\n", __FUNCTION__, priv->rx_mode); | ||
878 | if (priv->tsfeed || priv->secfeed || priv->secfilter || priv->multi_secfilter[0]) | ||
879 | printk("%s: BUG %d\n", __FUNCTION__, __LINE__); | ||
880 | |||
881 | priv->secfeed=NULL; | ||
882 | priv->secfilter=NULL; | ||
883 | priv->tsfeed = NULL; | ||
884 | |||
885 | if (priv->feedtype == DVB_NET_FEEDTYPE_MPE) { | ||
886 | dprintk("%s: alloc secfeed\n", __FUNCTION__); | ||
887 | ret=demux->allocate_section_feed(demux, &priv->secfeed, | ||
888 | dvb_net_sec_callback); | ||
889 | if (ret<0) { | ||
890 | printk("%s: could not allocate section feed\n", dev->name); | ||
891 | return ret; | ||
892 | } | ||
893 | |||
894 | ret = priv->secfeed->set(priv->secfeed, priv->pid, 32768, 0, 1); | ||
895 | |||
896 | if (ret<0) { | ||
897 | printk("%s: could not set section feed\n", dev->name); | ||
898 | priv->demux->release_section_feed(priv->demux, priv->secfeed); | ||
899 | priv->secfeed=NULL; | ||
900 | return ret; | ||
901 | } | ||
902 | |||
903 | if (priv->rx_mode != RX_MODE_PROMISC) { | ||
904 | dprintk("%s: set secfilter\n", __FUNCTION__); | ||
905 | dvb_net_filter_sec_set(dev, &priv->secfilter, mac, mask_normal); | ||
906 | } | ||
907 | |||
908 | switch (priv->rx_mode) { | ||
909 | case RX_MODE_MULTI: | ||
910 | for (i = 0; i < priv->multi_num; i++) { | ||
911 | dprintk("%s: set multi_secfilter[%d]\n", __FUNCTION__, i); | ||
912 | dvb_net_filter_sec_set(dev, &priv->multi_secfilter[i], | ||
913 | priv->multi_macs[i], mask_normal); | ||
914 | } | ||
915 | break; | ||
916 | case RX_MODE_ALL_MULTI: | ||
917 | priv->multi_num=1; | ||
918 | dprintk("%s: set multi_secfilter[0]\n", __FUNCTION__); | ||
919 | dvb_net_filter_sec_set(dev, &priv->multi_secfilter[0], | ||
920 | mac_allmulti, mask_allmulti); | ||
921 | break; | ||
922 | case RX_MODE_PROMISC: | ||
923 | priv->multi_num=0; | ||
924 | dprintk("%s: set secfilter\n", __FUNCTION__); | ||
925 | dvb_net_filter_sec_set(dev, &priv->secfilter, mac, mask_promisc); | ||
926 | break; | ||
927 | } | ||
928 | |||
929 | dprintk("%s: start filtering\n", __FUNCTION__); | ||
930 | priv->secfeed->start_filtering(priv->secfeed); | ||
931 | } else if (priv->feedtype == DVB_NET_FEEDTYPE_ULE) { | ||
932 | struct timespec timeout = { 0, 30000000 }; // 30 msec | ||
933 | |||
934 | /* we have payloads encapsulated in TS */ | ||
935 | dprintk("%s: alloc tsfeed\n", __FUNCTION__); | ||
936 | ret = demux->allocate_ts_feed(demux, &priv->tsfeed, dvb_net_ts_callback); | ||
937 | if (ret < 0) { | ||
938 | printk("%s: could not allocate ts feed\n", dev->name); | ||
939 | return ret; | ||
940 | } | ||
941 | |||
942 | /* Set netdevice pointer for ts decaps callback. */ | ||
943 | priv->tsfeed->priv = (void *)dev; | ||
944 | ret = priv->tsfeed->set(priv->tsfeed, priv->pid, | ||
945 | TS_PACKET, DMX_TS_PES_OTHER, | ||
946 | 188 * 100, /* nr. of bytes delivered per callback */ | ||
947 | 32768, /* circular buffer size */ | ||
948 | 0, /* descramble */ | ||
949 | timeout); | ||
950 | |||
951 | if (ret < 0) { | ||
952 | printk("%s: could not set ts feed\n", dev->name); | ||
953 | priv->demux->release_ts_feed(priv->demux, priv->tsfeed); | ||
954 | priv->tsfeed = NULL; | ||
955 | return ret; | ||
956 | } | ||
957 | |||
958 | dprintk("%s: start filtering\n", __FUNCTION__); | ||
959 | priv->tsfeed->start_filtering(priv->tsfeed); | ||
960 | } else | ||
961 | return -EINVAL; | ||
962 | |||
963 | return 0; | ||
964 | } | ||
965 | |||
966 | static int dvb_net_feed_stop(struct net_device *dev) | ||
967 | { | ||
968 | struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv; | ||
969 | int i; | ||
970 | |||
971 | dprintk("%s\n", __FUNCTION__); | ||
972 | if (priv->feedtype == DVB_NET_FEEDTYPE_MPE) { | ||
973 | if (priv->secfeed) { | ||
974 | if (priv->secfeed->is_filtering) { | ||
975 | dprintk("%s: stop secfeed\n", __FUNCTION__); | ||
976 | priv->secfeed->stop_filtering(priv->secfeed); | ||
977 | } | ||
978 | |||
979 | if (priv->secfilter) { | ||
980 | dprintk("%s: release secfilter\n", __FUNCTION__); | ||
981 | priv->secfeed->release_filter(priv->secfeed, | ||
982 | priv->secfilter); | ||
983 | priv->secfilter=NULL; | ||
984 | } | ||
985 | |||
986 | for (i=0; i<priv->multi_num; i++) { | ||
987 | if (priv->multi_secfilter[i]) { | ||
988 | dprintk("%s: release multi_filter[%d]\n", | ||
989 | __FUNCTION__, i); | ||
990 | priv->secfeed->release_filter(priv->secfeed, | ||
991 | priv->multi_secfilter[i]); | ||
992 | priv->multi_secfilter[i] = NULL; | ||
993 | } | ||
994 | } | ||
995 | |||
996 | priv->demux->release_section_feed(priv->demux, priv->secfeed); | ||
997 | priv->secfeed = NULL; | ||
998 | } else | ||
999 | printk("%s: no feed to stop\n", dev->name); | ||
1000 | } else if (priv->feedtype == DVB_NET_FEEDTYPE_ULE) { | ||
1001 | if (priv->tsfeed) { | ||
1002 | if (priv->tsfeed->is_filtering) { | ||
1003 | dprintk("%s: stop tsfeed\n", __FUNCTION__); | ||
1004 | priv->tsfeed->stop_filtering(priv->tsfeed); | ||
1005 | } | ||
1006 | priv->demux->release_ts_feed(priv->demux, priv->tsfeed); | ||
1007 | priv->tsfeed = NULL; | ||
1008 | } | ||
1009 | else | ||
1010 | printk("%s: no ts feed to stop\n", dev->name); | ||
1011 | } else | ||
1012 | return -EINVAL; | ||
1013 | return 0; | ||
1014 | } | ||
1015 | |||
1016 | |||
1017 | static int dvb_set_mc_filter (struct net_device *dev, struct dev_mc_list *mc) | ||
1018 | { | ||
1019 | struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv; | ||
1020 | |||
1021 | if (priv->multi_num == DVB_NET_MULTICAST_MAX) | ||
1022 | return -ENOMEM; | ||
1023 | |||
1024 | memcpy(priv->multi_macs[priv->multi_num], mc->dmi_addr, 6); | ||
1025 | |||
1026 | priv->multi_num++; | ||
1027 | return 0; | ||
1028 | } | ||
1029 | |||
1030 | |||
1031 | static void wq_set_multicast_list (void *data) | ||
1032 | { | ||
1033 | struct net_device *dev = data; | ||
1034 | struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv; | ||
1035 | |||
1036 | dvb_net_feed_stop(dev); | ||
1037 | |||
1038 | priv->rx_mode = RX_MODE_UNI; | ||
1039 | |||
1040 | if (dev->flags & IFF_PROMISC) { | ||
1041 | dprintk("%s: promiscuous mode\n", dev->name); | ||
1042 | priv->rx_mode = RX_MODE_PROMISC; | ||
1043 | } else if ((dev->flags & IFF_ALLMULTI)) { | ||
1044 | dprintk("%s: allmulti mode\n", dev->name); | ||
1045 | priv->rx_mode = RX_MODE_ALL_MULTI; | ||
1046 | } else if (dev->mc_count) { | ||
1047 | int mci; | ||
1048 | struct dev_mc_list *mc; | ||
1049 | |||
1050 | dprintk("%s: set_mc_list, %d entries\n", | ||
1051 | dev->name, dev->mc_count); | ||
1052 | |||
1053 | priv->rx_mode = RX_MODE_MULTI; | ||
1054 | priv->multi_num = 0; | ||
1055 | |||
1056 | for (mci = 0, mc=dev->mc_list; | ||
1057 | mci < dev->mc_count; | ||
1058 | mc = mc->next, mci++) { | ||
1059 | dvb_set_mc_filter(dev, mc); | ||
1060 | } | ||
1061 | } | ||
1062 | |||
1063 | dvb_net_feed_start(dev); | ||
1064 | } | ||
1065 | |||
1066 | |||
1067 | static void dvb_net_set_multicast_list (struct net_device *dev) | ||
1068 | { | ||
1069 | struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv; | ||
1070 | schedule_work(&priv->set_multicast_list_wq); | ||
1071 | } | ||
1072 | |||
1073 | |||
1074 | static void wq_restart_net_feed (void *data) | ||
1075 | { | ||
1076 | struct net_device *dev = data; | ||
1077 | |||
1078 | if (netif_running(dev)) { | ||
1079 | dvb_net_feed_stop(dev); | ||
1080 | dvb_net_feed_start(dev); | ||
1081 | } | ||
1082 | } | ||
1083 | |||
1084 | |||
1085 | static int dvb_net_set_mac (struct net_device *dev, void *p) | ||
1086 | { | ||
1087 | struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv; | ||
1088 | struct sockaddr *addr=p; | ||
1089 | |||
1090 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | ||
1091 | |||
1092 | if (netif_running(dev)) | ||
1093 | schedule_work(&priv->restart_net_feed_wq); | ||
1094 | |||
1095 | return 0; | ||
1096 | } | ||
1097 | |||
1098 | |||
1099 | static int dvb_net_open(struct net_device *dev) | ||
1100 | { | ||
1101 | struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv; | ||
1102 | |||
1103 | priv->in_use++; | ||
1104 | dvb_net_feed_start(dev); | ||
1105 | return 0; | ||
1106 | } | ||
1107 | |||
1108 | |||
1109 | static int dvb_net_stop(struct net_device *dev) | ||
1110 | { | ||
1111 | struct dvb_net_priv *priv = (struct dvb_net_priv*) dev->priv; | ||
1112 | |||
1113 | priv->in_use--; | ||
1114 | return dvb_net_feed_stop(dev); | ||
1115 | } | ||
1116 | |||
1117 | static struct net_device_stats * dvb_net_get_stats(struct net_device *dev) | ||
1118 | { | ||
1119 | return &((struct dvb_net_priv*) dev->priv)->stats; | ||
1120 | } | ||
1121 | |||
1122 | static void dvb_net_setup(struct net_device *dev) | ||
1123 | { | ||
1124 | ether_setup(dev); | ||
1125 | |||
1126 | dev->open = dvb_net_open; | ||
1127 | dev->stop = dvb_net_stop; | ||
1128 | dev->hard_start_xmit = dvb_net_tx; | ||
1129 | dev->get_stats = dvb_net_get_stats; | ||
1130 | dev->set_multicast_list = dvb_net_set_multicast_list; | ||
1131 | dev->set_mac_address = dvb_net_set_mac; | ||
1132 | dev->mtu = 4096; | ||
1133 | dev->mc_count = 0; | ||
1134 | dev->hard_header_cache = NULL; | ||
1135 | dev->flags |= IFF_NOARP; | ||
1136 | } | ||
1137 | |||
1138 | static int get_if(struct dvb_net *dvbnet) | ||
1139 | { | ||
1140 | int i; | ||
1141 | |||
1142 | for (i=0; i<DVB_NET_DEVICES_MAX; i++) | ||
1143 | if (!dvbnet->state[i]) | ||
1144 | break; | ||
1145 | |||
1146 | if (i == DVB_NET_DEVICES_MAX) | ||
1147 | return -1; | ||
1148 | |||
1149 | dvbnet->state[i]=1; | ||
1150 | return i; | ||
1151 | } | ||
1152 | |||
1153 | static int dvb_net_add_if(struct dvb_net *dvbnet, u16 pid, u8 feedtype) | ||
1154 | { | ||
1155 | struct net_device *net; | ||
1156 | struct dvb_net_priv *priv; | ||
1157 | int result; | ||
1158 | int if_num; | ||
1159 | |||
1160 | if (feedtype != DVB_NET_FEEDTYPE_MPE && feedtype != DVB_NET_FEEDTYPE_ULE) | ||
1161 | return -EINVAL; | ||
1162 | if ((if_num = get_if(dvbnet)) < 0) | ||
1163 | return -EINVAL; | ||
1164 | |||
1165 | net = alloc_netdev(sizeof(struct dvb_net_priv), "dvb", dvb_net_setup); | ||
1166 | if (!net) | ||
1167 | return -ENOMEM; | ||
1168 | |||
1169 | if (dvbnet->dvbdev->id) | ||
1170 | snprintf(net->name, IFNAMSIZ, "dvb%d%u%d", | ||
1171 | dvbnet->dvbdev->adapter->num, dvbnet->dvbdev->id, if_num); | ||
1172 | else | ||
1173 | /* compatibility fix to keep dvb0_0 format */ | ||
1174 | snprintf(net->name, IFNAMSIZ, "dvb%d_%d", | ||
1175 | dvbnet->dvbdev->adapter->num, if_num); | ||
1176 | |||
1177 | net->addr_len = 6; | ||
1178 | memcpy(net->dev_addr, dvbnet->dvbdev->adapter->proposed_mac, 6); | ||
1179 | |||
1180 | dvbnet->device[if_num] = net; | ||
1181 | |||
1182 | priv = net->priv; | ||
1183 | priv->demux = dvbnet->demux; | ||
1184 | priv->pid = pid; | ||
1185 | priv->rx_mode = RX_MODE_UNI; | ||
1186 | priv->need_pusi = 1; | ||
1187 | priv->tscc = 0; | ||
1188 | priv->feedtype = feedtype; | ||
1189 | reset_ule(priv); | ||
1190 | |||
1191 | INIT_WORK(&priv->set_multicast_list_wq, wq_set_multicast_list, net); | ||
1192 | INIT_WORK(&priv->restart_net_feed_wq, wq_restart_net_feed, net); | ||
1193 | |||
1194 | net->base_addr = pid; | ||
1195 | |||
1196 | if ((result = register_netdev(net)) < 0) { | ||
1197 | dvbnet->device[if_num] = NULL; | ||
1198 | free_netdev(net); | ||
1199 | return result; | ||
1200 | } | ||
1201 | printk("dvb_net: created network interface %s\n", net->name); | ||
1202 | |||
1203 | return if_num; | ||
1204 | } | ||
1205 | |||
1206 | static int dvb_net_remove_if(struct dvb_net *dvbnet, unsigned int num) | ||
1207 | { | ||
1208 | struct net_device *net = dvbnet->device[num]; | ||
1209 | struct dvb_net_priv *priv; | ||
1210 | |||
1211 | if (!dvbnet->state[num]) | ||
1212 | return -EINVAL; | ||
1213 | priv = net->priv; | ||
1214 | if (priv->in_use) | ||
1215 | return -EBUSY; | ||
1216 | |||
1217 | dvb_net_stop(net); | ||
1218 | flush_scheduled_work(); | ||
1219 | printk("dvb_net: removed network interface %s\n", net->name); | ||
1220 | unregister_netdev(net); | ||
1221 | dvbnet->state[num]=0; | ||
1222 | dvbnet->device[num] = NULL; | ||
1223 | free_netdev(net); | ||
1224 | |||
1225 | return 0; | ||
1226 | } | ||
1227 | |||
1228 | static int dvb_net_do_ioctl(struct inode *inode, struct file *file, | ||
1229 | unsigned int cmd, void *parg) | ||
1230 | { | ||
1231 | struct dvb_device *dvbdev = (struct dvb_device *) file->private_data; | ||
1232 | struct dvb_net *dvbnet = (struct dvb_net *) dvbdev->priv; | ||
1233 | |||
1234 | if (((file->f_flags&O_ACCMODE)==O_RDONLY)) | ||
1235 | return -EPERM; | ||
1236 | |||
1237 | switch (cmd) { | ||
1238 | case NET_ADD_IF: | ||
1239 | { | ||
1240 | struct dvb_net_if *dvbnetif=(struct dvb_net_if *)parg; | ||
1241 | int result; | ||
1242 | |||
1243 | if (!capable(CAP_SYS_ADMIN)) | ||
1244 | return -EPERM; | ||
1245 | |||
1246 | if (!try_module_get(dvbdev->adapter->module)) | ||
1247 | return -EPERM; | ||
1248 | |||
1249 | result=dvb_net_add_if(dvbnet, dvbnetif->pid, dvbnetif->feedtype); | ||
1250 | if (result<0) { | ||
1251 | module_put(dvbdev->adapter->module); | ||
1252 | return result; | ||
1253 | } | ||
1254 | dvbnetif->if_num=result; | ||
1255 | break; | ||
1256 | } | ||
1257 | case NET_GET_IF: | ||
1258 | { | ||
1259 | struct net_device *netdev; | ||
1260 | struct dvb_net_priv *priv_data; | ||
1261 | struct dvb_net_if *dvbnetif=(struct dvb_net_if *)parg; | ||
1262 | |||
1263 | if (dvbnetif->if_num >= DVB_NET_DEVICES_MAX || | ||
1264 | !dvbnet->state[dvbnetif->if_num]) | ||
1265 | return -EINVAL; | ||
1266 | |||
1267 | netdev = dvbnet->device[dvbnetif->if_num]; | ||
1268 | |||
1269 | priv_data=(struct dvb_net_priv*)netdev->priv; | ||
1270 | dvbnetif->pid=priv_data->pid; | ||
1271 | dvbnetif->feedtype=priv_data->feedtype; | ||
1272 | break; | ||
1273 | } | ||
1274 | case NET_REMOVE_IF: | ||
1275 | { | ||
1276 | int ret; | ||
1277 | |||
1278 | if (!capable(CAP_SYS_ADMIN)) | ||
1279 | return -EPERM; | ||
1280 | if ((unsigned int) parg >= DVB_NET_DEVICES_MAX) | ||
1281 | return -EINVAL; | ||
1282 | ret = dvb_net_remove_if(dvbnet, (unsigned int) parg); | ||
1283 | if (!ret) | ||
1284 | module_put(dvbdev->adapter->module); | ||
1285 | return ret; | ||
1286 | } | ||
1287 | |||
1288 | /* binary compatiblity cruft */ | ||
1289 | case __NET_ADD_IF_OLD: | ||
1290 | { | ||
1291 | struct __dvb_net_if_old *dvbnetif=(struct __dvb_net_if_old *)parg; | ||
1292 | int result; | ||
1293 | |||
1294 | if (!capable(CAP_SYS_ADMIN)) | ||
1295 | return -EPERM; | ||
1296 | |||
1297 | if (!try_module_get(dvbdev->adapter->module)) | ||
1298 | return -EPERM; | ||
1299 | |||
1300 | result=dvb_net_add_if(dvbnet, dvbnetif->pid, DVB_NET_FEEDTYPE_MPE); | ||
1301 | if (result<0) { | ||
1302 | module_put(dvbdev->adapter->module); | ||
1303 | return result; | ||
1304 | } | ||
1305 | dvbnetif->if_num=result; | ||
1306 | break; | ||
1307 | } | ||
1308 | case __NET_GET_IF_OLD: | ||
1309 | { | ||
1310 | struct net_device *netdev; | ||
1311 | struct dvb_net_priv *priv_data; | ||
1312 | struct __dvb_net_if_old *dvbnetif=(struct __dvb_net_if_old *)parg; | ||
1313 | |||
1314 | if (dvbnetif->if_num >= DVB_NET_DEVICES_MAX || | ||
1315 | !dvbnet->state[dvbnetif->if_num]) | ||
1316 | return -EINVAL; | ||
1317 | |||
1318 | netdev = dvbnet->device[dvbnetif->if_num]; | ||
1319 | |||
1320 | priv_data=(struct dvb_net_priv*)netdev->priv; | ||
1321 | dvbnetif->pid=priv_data->pid; | ||
1322 | break; | ||
1323 | } | ||
1324 | default: | ||
1325 | return -ENOTTY; | ||
1326 | } | ||
1327 | return 0; | ||
1328 | } | ||
1329 | |||
1330 | static int dvb_net_ioctl(struct inode *inode, struct file *file, | ||
1331 | unsigned int cmd, unsigned long arg) | ||
1332 | { | ||
1333 | return dvb_usercopy(inode, file, cmd, arg, dvb_net_do_ioctl); | ||
1334 | } | ||
1335 | |||
1336 | static struct file_operations dvb_net_fops = { | ||
1337 | .owner = THIS_MODULE, | ||
1338 | .ioctl = dvb_net_ioctl, | ||
1339 | .open = dvb_generic_open, | ||
1340 | .release = dvb_generic_release, | ||
1341 | }; | ||
1342 | |||
1343 | static struct dvb_device dvbdev_net = { | ||
1344 | .priv = NULL, | ||
1345 | .users = 1, | ||
1346 | .writers = 1, | ||
1347 | .fops = &dvb_net_fops, | ||
1348 | }; | ||
1349 | |||
1350 | |||
1351 | void dvb_net_release (struct dvb_net *dvbnet) | ||
1352 | { | ||
1353 | int i; | ||
1354 | |||
1355 | dvb_unregister_device(dvbnet->dvbdev); | ||
1356 | |||
1357 | for (i=0; i<DVB_NET_DEVICES_MAX; i++) { | ||
1358 | if (!dvbnet->state[i]) | ||
1359 | continue; | ||
1360 | dvb_net_remove_if(dvbnet, i); | ||
1361 | } | ||
1362 | } | ||
1363 | EXPORT_SYMBOL(dvb_net_release); | ||
1364 | |||
1365 | |||
1366 | int dvb_net_init (struct dvb_adapter *adap, struct dvb_net *dvbnet, | ||
1367 | struct dmx_demux *dmx) | ||
1368 | { | ||
1369 | int i; | ||
1370 | |||
1371 | dvbnet->demux = dmx; | ||
1372 | |||
1373 | for (i=0; i<DVB_NET_DEVICES_MAX; i++) | ||
1374 | dvbnet->state[i] = 0; | ||
1375 | |||
1376 | dvb_register_device (adap, &dvbnet->dvbdev, &dvbdev_net, | ||
1377 | dvbnet, DVB_DEVICE_NET); | ||
1378 | |||
1379 | return 0; | ||
1380 | } | ||
1381 | EXPORT_SYMBOL(dvb_net_init); | ||