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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/mutex.h>
66#include <linux/sched.h>
67
68#include "dvb_demux.h"
69#include "dvb_net.h"
70
71static int dvb_net_debug;
72module_param(dvb_net_debug, int, 0444);
73MODULE_PARM_DESC(dvb_net_debug, "enable debug messages");
74
75#define dprintk(x...) do { if (dvb_net_debug) printk(x); } while (0)
76
77
78static 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
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
96#define isprint(c) ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9'))
97
98static 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
127struct dvb_net_priv {
128 int in_use;
129 u16 pid;
130 struct net_device *net;
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;
147 int need_pusi;
148 unsigned char tscc;
149 struct sk_buff *ule_skb;
150 unsigned char *ule_next_hdr;
151 unsigned short ule_sndu_len;
152 unsigned short ule_sndu_type;
153 unsigned char ule_sndu_type_1;
154 unsigned char ule_dbit;
155
156 unsigned char ule_bridged;
157 int ule_sndu_remain;
158 unsigned long ts_count;
159 struct mutex mutex;
160};
161
162
163
164
165
166
167
168
169
170
171static __be16 dvb_net_eth_type_trans(struct sk_buff *skb,
172 struct net_device *dev)
173{
174 struct ethhdr *eth;
175 unsigned char *rawp;
176
177 skb_reset_mac_header(skb);
178 skb_pull(skb,dev->hard_header_len);
179 eth = eth_hdr(skb);
180
181 if (*eth->h_dest & 1) {
182 if(memcmp(eth->h_dest,dev->broadcast, ETH_ALEN)==0)
183 skb->pkt_type=PACKET_BROADCAST;
184 else
185 skb->pkt_type=PACKET_MULTICAST;
186 }
187
188 if (ntohs(eth->h_proto) >= 1536)
189 return eth->h_proto;
190
191 rawp = skb->data;
192
193
194
195
196
197
198
199 if (*(unsigned short *)rawp == 0xFFFF)
200 return htons(ETH_P_802_3);
201
202
203
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
217
218#define ULE_TEST 0
219#define ULE_BRIDGED 1
220
221#define ULE_OPTEXTHDR_PADDING 0
222
223static int ule_test_sndu( struct dvb_net_priv *p )
224{
225 return -1;
226}
227
228static int ule_bridged_sndu( struct dvb_net_priv *p )
229{
230 struct ethhdr *hdr = (struct ethhdr*) p->ule_next_hdr;
231 if(ntohs(hdr->h_proto) < 1536) {
232 int framelen = p->ule_sndu_len - ((p->ule_next_hdr+sizeof(struct ethhdr)) - p->ule_skb->data);
233
234 if(framelen != ntohs(hdr->h_proto)) {
235 return -1;
236 }
237 }
238
239
240
241
242
243
244 p->ule_bridged = 1;
245 return 0;
246}
247
248static int ule_exthdr_padding(struct dvb_net_priv *p)
249{
250 return 0;
251}
252
253
254
255
256
257
258static int handle_one_ule_extension( struct dvb_net_priv *p )
259{
260
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
265 static int (*ule_optional_ext_handlers[255])( struct dvb_net_priv *p ) =
266 { [0] = ule_exthdr_padding, [1] = NULL, };
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
273 if (hlen == 0) {
274
275 if (ule_mandatory_ext_handlers[htype]) {
276 ext_len = ule_mandatory_ext_handlers[htype]( p );
277 if(ext_len >= 0) {
278 p->ule_next_hdr += ext_len;
279 if (!p->ule_bridged) {
280 p->ule_sndu_type = ntohs(*(__be16 *)p->ule_next_hdr);
281 p->ule_next_hdr += 2;
282 } else {
283 p->ule_sndu_type = ntohs(*(__be16 *)(p->ule_next_hdr + ((p->ule_dbit ? 2 : 3) * ETH_ALEN)));
284
285 }
286 }
287
288 } else
289 ext_len = -1;
290 } else {
291
292 ext_len = hlen << 1;
293
294 if (ule_optional_ext_handlers[htype])
295 (void)ule_optional_ext_handlers[htype]( p );
296 p->ule_next_hdr += ext_len;
297 p->ule_sndu_type = ntohs( *(__be16 *)(p->ule_next_hdr-2) );
298
299
300
301
302 }
303
304 return ext_len;
305}
306
307static 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 );
314 if (l < 0)
315 return l;
316 total_ext_len += l;
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
322
323 } while (p->ule_sndu_type < 1536);
324
325 return total_ext_len;
326}
327
328
329
330static 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
344
345
346static void dvb_net_ule( struct net_device *dev, const u8 *buf, size_t buf_len )
347{
348 struct dvb_net_priv *priv = netdev_priv(dev);
349 unsigned long skipped = 0L;
350 const u8 *ts, *ts_end, *from_where = NULL;
351 u8 ts_remain = 0, how_much = 0, new_ts = 1;
352 struct ethhdr *ethh = NULL;
353
354#ifdef ULE_DEBUG
355
356 static unsigned char ule_hist[100*TS_SZ];
357 static unsigned char *ule_where = ule_hist, ule_dump;
358#endif
359
360
361
362
363 for (ts = buf, ts_end = buf + buf_len; ts < ts_end; ) {
364
365 if (new_ts) {
366
367
368#ifdef ULE_DEBUG
369 if (ule_where >= &ule_hist[100*TS_SZ]) ule_where = ule_hist;
370 memcpy( ule_where, ts, TS_SZ );
371 if (ule_dump) {
372 hexdump( ule_where, TS_SZ );
373 ule_dump = 0;
374 }
375 ule_where += TS_SZ;
376#endif
377
378
379 if ((ts[0] != TS_SYNC) || (ts[1] & TS_TEI) || ((ts[3] & TS_SC) != 0)) {
380 printk(KERN_WARNING "%lu: Invalid TS cell: SYNC %#x, TEI %u, SC %#x.\n",
381 priv->ts_count, ts[0], ts[1] & TS_TEI >> 7, ts[3] & 0xC0 >> 6);
382
383
384 if (priv->ule_skb) {
385 dev_kfree_skb( priv->ule_skb );
386
387 dev->stats.rx_errors++;
388 dev->stats.rx_frame_errors++;
389 }
390 reset_ule(priv);
391 priv->need_pusi = 1;
392
393
394 ts += TS_SZ;
395 priv->ts_count++;
396 continue;
397 }
398
399 ts_remain = 184;
400 from_where = ts + 4;
401 }
402
403 if (priv->need_pusi) {
404 if (ts[1] & TS_PUSI) {
405
406
407 priv->tscc = ts[3] & 0x0F;
408
409 if (ts[4] > ts_remain) {
410 printk(KERN_ERR "%lu: Invalid ULE packet "
411 "(pointer field %d)\n", priv->ts_count, ts[4]);
412 ts += TS_SZ;
413 priv->ts_count++;
414 continue;
415 }
416
417 from_where = &ts[5] + ts[4];
418 ts_remain -= 1 + ts[4];
419 skipped = 0;
420 } else {
421 skipped++;
422 ts += TS_SZ;
423 priv->ts_count++;
424 continue;
425 }
426 }
427
428 if (new_ts) {
429
430 if ((ts[3] & 0x0F) == priv->tscc)
431 priv->tscc = (priv->tscc + 1) & 0x0F;
432 else {
433
434 printk(KERN_WARNING "%lu: TS discontinuity: got %#x, "
435 "expected %#x.\n", priv->ts_count, ts[3] & 0x0F, priv->tscc);
436
437 if (priv->ule_skb) {
438 dev_kfree_skb( priv->ule_skb );
439
440
441 dev->stats.rx_errors++;
442 dev->stats.rx_frame_errors++;
443 }
444 reset_ule(priv);
445
446 priv->need_pusi = 1;
447 continue;
448 }
449
450
451
452
453 if (ts[1] & TS_PUSI) {
454 if (! priv->need_pusi) {
455 if (!(*from_where < (ts_remain-1)) || *from_where != priv->ule_sndu_remain) {
456
457 printk(KERN_WARNING "%lu: Invalid pointer "
458 "field: %u.\n", priv->ts_count, *from_where);
459
460
461 if (priv->ule_skb) {
462 dev_kfree_skb( priv->ule_skb );
463 dev->stats.rx_errors++;
464 dev->stats.rx_frame_errors++;
465 }
466 reset_ule(priv);
467 priv->need_pusi = 1;
468 continue;
469 }
470
471
472 from_where += 1;
473 ts_remain -= 1;
474 } else
475 priv->need_pusi = 0;
476
477 if (priv->ule_sndu_remain > 183) {
478
479
480 dev->stats.rx_errors++;
481 dev->stats.rx_length_errors++;
482 printk(KERN_WARNING "%lu: Expected %d more SNDU bytes, but "
483 "got PUSI (pf %d, ts_remain %d). Flushing incomplete payload.\n",
484 priv->ts_count, priv->ule_sndu_remain, ts[4], ts_remain);
485 dev_kfree_skb(priv->ule_skb);
486
487 reset_ule(priv);
488
489 from_where += ts[4];
490 ts_remain -= ts[4];
491 }
492 }
493 }
494
495
496 if (priv->ule_skb == NULL) {
497
498
499
500
501
502 if (ts_remain < 2) {
503 printk(KERN_WARNING "Invalid payload packing: only %d "
504 "bytes left in TS. Resyncing.\n", ts_remain);
505 priv->ule_sndu_len = 0;
506 priv->need_pusi = 1;
507 continue;
508 }
509
510 if (! priv->ule_sndu_len) {
511
512 priv->ule_sndu_len = from_where[0] << 8 | from_where[1];
513 if (priv->ule_sndu_len & 0x8000) {
514
515 priv->ule_sndu_len &= 0x7FFF;
516 priv->ule_dbit = 1;
517 } else
518 priv->ule_dbit = 0;
519
520 if (priv->ule_sndu_len < 5) {
521 printk(KERN_WARNING "%lu: Invalid ULE SNDU length %u. "
522 "Resyncing.\n", priv->ts_count, priv->ule_sndu_len);
523 dev->stats.rx_errors++;
524 dev->stats.rx_length_errors++;
525 priv->ule_sndu_len = 0;
526 priv->need_pusi = 1;
527 new_ts = 1;
528 ts += TS_SZ;
529 priv->ts_count++;
530 continue;
531 }
532 ts_remain -= 2;
533 from_where += 2;
534 }
535
536
537
538
539
540
541
542
543 switch (ts_remain) {
544 case 1:
545 priv->ule_sndu_type = from_where[0] << 8;
546 priv->ule_sndu_type_1 = 1;
547 ts_remain -= 1; from_where += 1;
548
549 case 0:
550 new_ts = 1;
551 ts += TS_SZ;
552 priv->ts_count++;
553 continue;
554
555 default:
556
557 if (priv->ule_sndu_type_1) {
558 priv->ule_sndu_type |= from_where[0];
559 from_where += 1;
560 ts_remain -= 1;
561 } else {
562
563 priv->ule_sndu_type = from_where[0] << 8 | from_where[1];
564 from_where += 2;
565 ts_remain -= 2;
566 }
567 break;
568 }
569
570
571
572 priv->ule_skb = dev_alloc_skb( priv->ule_sndu_len + ETH_HLEN + ETH_ALEN );
573 if (priv->ule_skb == NULL) {
574 printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n",
575 dev->name);
576 dev->stats.rx_dropped++;
577 return;
578 }
579
580
581 priv->ule_sndu_remain = priv->ule_sndu_len;
582 priv->ule_skb->dev = dev;
583
584 skb_reserve( priv->ule_skb, ETH_HLEN + ETH_ALEN );
585 }
586
587
588 how_much = min(priv->ule_sndu_remain, (int)ts_remain);
589 memcpy(skb_put(priv->ule_skb, how_much), from_where, how_much);
590 priv->ule_sndu_remain -= how_much;
591 ts_remain -= how_much;
592 from_where += how_much;
593
594
595 if (priv->ule_sndu_remain <= 0) {
596
597 __be16 ulen = htons(priv->ule_sndu_len);
598 __be16 utype = htons(priv->ule_sndu_type);
599 const u8 *tail;
600 struct kvec iov[3] = {
601 { &ulen, sizeof ulen },
602 { &utype, sizeof utype },
603 { priv->ule_skb->data, priv->ule_skb->len - 4 }
604 };
605 u32 ule_crc = ~0L, expected_crc;
606 if (priv->ule_dbit) {
607
608
609 ulen |= htons(0x8000);
610 }
611
612 ule_crc = iov_crc32(ule_crc, iov, 3);
613 tail = skb_tail_pointer(priv->ule_skb);
614 expected_crc = *(tail - 4) << 24 |
615 *(tail - 3) << 16 |
616 *(tail - 2) << 8 |
617 *(tail - 1);
618 if (ule_crc != expected_crc) {
619 printk(KERN_WARNING "%lu: CRC32 check FAILED: %08x / %08x, SNDU len %d type %#x, ts_remain %d, next 2: %x.\n",
620 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);
621
622#ifdef ULE_DEBUG
623 hexdump( iov[0].iov_base, iov[0].iov_len );
624 hexdump( iov[1].iov_base, iov[1].iov_len );
625 hexdump( iov[2].iov_base, iov[2].iov_len );
626
627 if (ule_where == ule_hist) {
628 hexdump( &ule_hist[98*TS_SZ], TS_SZ );
629 hexdump( &ule_hist[99*TS_SZ], TS_SZ );
630 } else if (ule_where == &ule_hist[TS_SZ]) {
631 hexdump( &ule_hist[99*TS_SZ], TS_SZ );
632 hexdump( ule_hist, TS_SZ );
633 } else {
634 hexdump( ule_where - TS_SZ - TS_SZ, TS_SZ );
635 hexdump( ule_where - TS_SZ, TS_SZ );
636 }
637 ule_dump = 1;
638#endif
639
640 dev->stats.rx_errors++;
641 dev->stats.rx_crc_errors++;
642 dev_kfree_skb(priv->ule_skb);
643 } else {
644
645 u8 dest_addr[ETH_ALEN];
646 static const u8 bc_addr[ETH_ALEN] =
647 { [ 0 ... ETH_ALEN-1] = 0xff };
648
649
650 priv->ule_skb->tail -= 4;
651 priv->ule_skb->len -= 4;
652
653 if (!priv->ule_dbit) {
654
655
656
657
658
659
660
661
662 register int drop = 0;
663 if (priv->rx_mode != RX_MODE_PROMISC) {
664 if (priv->ule_skb->data[0] & 0x01) {
665
666 if (memcmp(priv->ule_skb->data, bc_addr, ETH_ALEN)) {
667
668 if (priv->rx_mode == RX_MODE_MULTI) {
669 int i;
670 for(i = 0; i < priv->multi_num && memcmp(priv->ule_skb->data, priv->multi_macs[i], ETH_ALEN); i++)
671 ;
672 if (i == priv->multi_num)
673 drop = 1;
674 } else if (priv->rx_mode != RX_MODE_ALL_MULTI)
675 drop = 1;
676
677 }
678
679 }
680 else if (memcmp(priv->ule_skb->data, dev->dev_addr, ETH_ALEN))
681 drop = 1;
682
683 }
684
685
686 if (drop) {
687#ifdef ULE_DEBUG
688 dprintk("Dropping SNDU: MAC destination address does not match: dest addr: "MAC_ADDR_PRINTFMT", dev addr: "MAC_ADDR_PRINTFMT"\n",
689 MAX_ADDR_PRINTFMT_ARGS(priv->ule_skb->data), MAX_ADDR_PRINTFMT_ARGS(dev->dev_addr));
690#endif
691 dev_kfree_skb(priv->ule_skb);
692 goto sndu_done;
693 }
694 else
695 {
696 skb_copy_from_linear_data(priv->ule_skb,
697 dest_addr,
698 ETH_ALEN);
699 skb_pull(priv->ule_skb, ETH_ALEN);
700 }
701 }
702
703
704 if (priv->ule_sndu_type < 1536) {
705
706 int l = handle_ule_extensions(priv);
707 if (l < 0) {
708
709
710 dev_kfree_skb(priv->ule_skb);
711 goto sndu_done;
712 }
713 skb_pull(priv->ule_skb, l);
714 }
715
716
717
718
719
720
721
722
723
724
725 if (!priv->ule_bridged) {
726 skb_push(priv->ule_skb, ETH_HLEN);
727 ethh = (struct ethhdr *)priv->ule_skb->data;
728 if (!priv->ule_dbit) {
729
730 memcpy(ethh->h_dest, dest_addr, ETH_ALEN);
731 memset(ethh->h_source, 0, ETH_ALEN);
732 }
733 else
734 memset( ethh, 0, ETH_ALEN*2 );
735
736 ethh->h_proto = htons(priv->ule_sndu_type);
737 }
738
739 priv->ule_bridged = 0;
740
741
742 priv->ule_skb->protocol = dvb_net_eth_type_trans(priv->ule_skb, dev);
743
744
745
746
747 dev->stats.rx_packets++;
748 dev->stats.rx_bytes += priv->ule_skb->len;
749 netif_rx(priv->ule_skb);
750 }
751 sndu_done:
752
753 reset_ule(priv);
754 }
755
756
757 if (ts_remain >= 2 && *((unsigned short *)from_where) != 0xFFFF) {
758
759 new_ts = 0;
760 priv->ule_skb = NULL;
761 priv->ule_sndu_type_1 = 0;
762 priv->ule_sndu_len = 0;
763
764
765
766
767
768 } else {
769 new_ts = 1;
770 ts += TS_SZ;
771 priv->ts_count++;
772 if (priv->ule_skb == NULL) {
773 priv->need_pusi = 1;
774 priv->ule_sndu_type_1 = 0;
775 priv->ule_sndu_len = 0;
776 }
777 }
778 }
779}
780
781static int dvb_net_ts_callback(const u8 *buffer1, size_t buffer1_len,
782 const u8 *buffer2, size_t buffer2_len,
783 struct dmx_ts_feed *feed, enum dmx_success success)
784{
785 struct net_device *dev = feed->priv;
786
787 if (buffer2)
788 printk(KERN_WARNING "buffer2 not NULL: %p.\n", buffer2);
789 if (buffer1_len > 32768)
790 printk(KERN_WARNING "length > 32k: %zu.\n", buffer1_len);
791
792
793 dvb_net_ule(dev, buffer1, buffer1_len);
794 return 0;
795}
796
797
798static void dvb_net_sec(struct net_device *dev,
799 const u8 *pkt, int pkt_len)
800{
801 u8 *eth;
802 struct sk_buff *skb;
803 struct net_device_stats *stats = &dev->stats;
804 int snap = 0;
805
806
807 if (pkt_len < 16) {
808 printk("%s: IP/MPE packet length = %d too small.\n",
809 dev->name, pkt_len);
810 stats->rx_errors++;
811 stats->rx_length_errors++;
812 return;
813 }
814
815
816#if 0
817 if ((pkt[5] & 0xfd) != 0xc1) {
818
819#else
820 if ((pkt[5] & 0x3c) != 0x00) {
821
822#endif
823 stats->rx_errors++;
824 stats->rx_crc_errors++;
825 return;
826 }
827 if (pkt[5] & 0x02) {
828
829 if (pkt_len < 24 || memcmp(&pkt[12], "\xaa\xaa\x03\0\0\0", 6)) {
830 stats->rx_dropped++;
831 return;
832 }
833 snap = 8;
834 }
835 if (pkt[7]) {
836
837 stats->rx_errors++;
838 stats->rx_frame_errors++;
839 return;
840 }
841
842
843
844
845 if (!(skb = dev_alloc_skb(pkt_len - 4 - 12 + 14 + 2 - snap))) {
846
847 stats->rx_dropped++;
848 return;
849 }
850 skb_reserve(skb, 2);
851 skb->dev = dev;
852
853
854 eth = (u8 *) skb_put(skb, pkt_len - 12 - 4 + 14 - snap);
855 memcpy(eth + 14, pkt + 12 + snap, pkt_len - 12 - 4 - snap);
856
857
858 eth[0]=pkt[0x0b];
859 eth[1]=pkt[0x0a];
860 eth[2]=pkt[0x09];
861 eth[3]=pkt[0x08];
862 eth[4]=pkt[0x04];
863 eth[5]=pkt[0x03];
864
865 eth[6]=eth[7]=eth[8]=eth[9]=eth[10]=eth[11]=0;
866
867 if (snap) {
868 eth[12] = pkt[18];
869 eth[13] = pkt[19];
870 } else {
871
872
873
874 if (pkt[12] >> 4 == 6) {
875 eth[12] = 0x86;
876 eth[13] = 0xdd;
877 } else {
878 eth[12] = 0x08;
879 eth[13] = 0x00;
880 }
881 }
882
883 skb->protocol = dvb_net_eth_type_trans(skb, dev);
884
885 stats->rx_packets++;
886 stats->rx_bytes+=skb->len;
887 netif_rx(skb);
888}
889
890static int dvb_net_sec_callback(const u8 *buffer1, size_t buffer1_len,
891 const u8 *buffer2, size_t buffer2_len,
892 struct dmx_section_filter *filter,
893 enum dmx_success success)
894{
895 struct net_device *dev = filter->priv;
896
897
898
899
900
901 dvb_net_sec (dev, buffer1, buffer1_len);
902 return 0;
903}
904
905static int dvb_net_tx(struct sk_buff *skb, struct net_device *dev)
906{
907 dev_kfree_skb(skb);
908 return NETDEV_TX_OK;
909}
910
911static u8 mask_normal[6]={0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
912static u8 mask_allmulti[6]={0xff, 0xff, 0xff, 0x00, 0x00, 0x00};
913static u8 mac_allmulti[6]={0x01, 0x00, 0x5e, 0x00, 0x00, 0x00};
914static u8 mask_promisc[6]={0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
915
916static int dvb_net_filter_sec_set(struct net_device *dev,
917 struct dmx_section_filter **secfilter,
918 u8 *mac, u8 *mac_mask)
919{
920 struct dvb_net_priv *priv = netdev_priv(dev);
921 int ret;
922
923 *secfilter=NULL;
924 ret = priv->secfeed->allocate_filter(priv->secfeed, secfilter);
925 if (ret<0) {
926 printk("%s: could not get filter\n", dev->name);
927 return ret;
928 }
929
930 (*secfilter)->priv=(void *) dev;
931
932 memset((*secfilter)->filter_value, 0x00, DMX_MAX_FILTER_SIZE);
933 memset((*secfilter)->filter_mask, 0x00, DMX_MAX_FILTER_SIZE);
934 memset((*secfilter)->filter_mode, 0xff, DMX_MAX_FILTER_SIZE);
935
936 (*secfilter)->filter_value[0]=0x3e;
937 (*secfilter)->filter_value[3]=mac[5];
938 (*secfilter)->filter_value[4]=mac[4];
939 (*secfilter)->filter_value[8]=mac[3];
940 (*secfilter)->filter_value[9]=mac[2];
941 (*secfilter)->filter_value[10]=mac[1];
942 (*secfilter)->filter_value[11]=mac[0];
943
944 (*secfilter)->filter_mask[0] = 0xff;
945 (*secfilter)->filter_mask[3] = mac_mask[5];
946 (*secfilter)->filter_mask[4] = mac_mask[4];
947 (*secfilter)->filter_mask[8] = mac_mask[3];
948 (*secfilter)->filter_mask[9] = mac_mask[2];
949 (*secfilter)->filter_mask[10] = mac_mask[1];
950 (*secfilter)->filter_mask[11]=mac_mask[0];
951
952 dprintk("%s: filter mac=%02x %02x %02x %02x %02x %02x\n",
953 dev->name, mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
954 dprintk("%s: filter mask=%02x %02x %02x %02x %02x %02x\n",
955 dev->name, mac_mask[0], mac_mask[1], mac_mask[2],
956 mac_mask[3], mac_mask[4], mac_mask[5]);
957
958 return 0;
959}
960
961static int dvb_net_feed_start(struct net_device *dev)
962{
963 int ret = 0, i;
964 struct dvb_net_priv *priv = netdev_priv(dev);
965 struct dmx_demux *demux = priv->demux;
966 unsigned char *mac = (unsigned char *) dev->dev_addr;
967
968 dprintk("%s: rx_mode %i\n", __func__, priv->rx_mode);
969 mutex_lock(&priv->mutex);
970 if (priv->tsfeed || priv->secfeed || priv->secfilter || priv->multi_secfilter[0])
971 printk("%s: BUG %d\n", __func__, __LINE__);
972
973 priv->secfeed=NULL;
974 priv->secfilter=NULL;
975 priv->tsfeed = NULL;
976
977 if (priv->feedtype == DVB_NET_FEEDTYPE_MPE) {
978 dprintk("%s: alloc secfeed\n", __func__);
979 ret=demux->allocate_section_feed(demux, &priv->secfeed,
980 dvb_net_sec_callback);
981 if (ret<0) {
982 printk("%s: could not allocate section feed\n", dev->name);
983 goto error;
984 }
985
986 ret = priv->secfeed->set(priv->secfeed, priv->pid, 32768, 1);
987
988 if (ret<0) {
989 printk("%s: could not set section feed\n", dev->name);
990 priv->demux->release_section_feed(priv->demux, priv->secfeed);
991 priv->secfeed=NULL;
992 goto error;
993 }
994
995 if (priv->rx_mode != RX_MODE_PROMISC) {
996 dprintk("%s: set secfilter\n", __func__);
997 dvb_net_filter_sec_set(dev, &priv->secfilter, mac, mask_normal);
998 }
999
1000 switch (priv->rx_mode) {
1001 case RX_MODE_MULTI:
1002 for (i = 0; i < priv->multi_num; i++) {
1003 dprintk("%s: set multi_secfilter[%d]\n", __func__, i);
1004 dvb_net_filter_sec_set(dev, &priv->multi_secfilter[i],
1005 priv->multi_macs[i], mask_normal);
1006 }
1007 break;
1008 case RX_MODE_ALL_MULTI:
1009 priv->multi_num=1;
1010 dprintk("%s: set multi_secfilter[0]\n", __func__);
1011 dvb_net_filter_sec_set(dev, &priv->multi_secfilter[0],
1012 mac_allmulti, mask_allmulti);
1013 break;
1014 case RX_MODE_PROMISC:
1015 priv->multi_num=0;
1016 dprintk("%s: set secfilter\n", __func__);
1017 dvb_net_filter_sec_set(dev, &priv->secfilter, mac, mask_promisc);
1018 break;
1019 }
1020
1021 dprintk("%s: start filtering\n", __func__);
1022 priv->secfeed->start_filtering(priv->secfeed);
1023 } else if (priv->feedtype == DVB_NET_FEEDTYPE_ULE) {
1024 struct timespec timeout = { 0, 10000000 };
1025
1026
1027 dprintk("%s: alloc tsfeed\n", __func__);
1028 ret = demux->allocate_ts_feed(demux, &priv->tsfeed, dvb_net_ts_callback);
1029 if (ret < 0) {
1030 printk("%s: could not allocate ts feed\n", dev->name);
1031 goto error;
1032 }
1033
1034
1035 priv->tsfeed->priv = (void *)dev;
1036 ret = priv->tsfeed->set(priv->tsfeed,
1037 priv->pid,
1038 TS_PACKET,
1039 DMX_TS_PES_OTHER,
1040 32768,
1041 timeout
1042 );
1043
1044 if (ret < 0) {
1045 printk("%s: could not set ts feed\n", dev->name);
1046 priv->demux->release_ts_feed(priv->demux, priv->tsfeed);
1047 priv->tsfeed = NULL;
1048 goto error;
1049 }
1050
1051 dprintk("%s: start filtering\n", __func__);
1052 priv->tsfeed->start_filtering(priv->tsfeed);
1053 } else
1054 ret = -EINVAL;
1055
1056error:
1057 mutex_unlock(&priv->mutex);
1058 return ret;
1059}
1060
1061static int dvb_net_feed_stop(struct net_device *dev)
1062{
1063 struct dvb_net_priv *priv = netdev_priv(dev);
1064 int i, ret = 0;
1065
1066 dprintk("%s\n", __func__);
1067 mutex_lock(&priv->mutex);
1068 if (priv->feedtype == DVB_NET_FEEDTYPE_MPE) {
1069 if (priv->secfeed) {
1070 if (priv->secfeed->is_filtering) {
1071 dprintk("%s: stop secfeed\n", __func__);
1072 priv->secfeed->stop_filtering(priv->secfeed);
1073 }
1074
1075 if (priv->secfilter) {
1076 dprintk("%s: release secfilter\n", __func__);
1077 priv->secfeed->release_filter(priv->secfeed,
1078 priv->secfilter);
1079 priv->secfilter=NULL;
1080 }
1081
1082 for (i=0; i<priv->multi_num; i++) {
1083 if (priv->multi_secfilter[i]) {
1084 dprintk("%s: release multi_filter[%d]\n",
1085 __func__, i);
1086 priv->secfeed->release_filter(priv->secfeed,
1087 priv->multi_secfilter[i]);
1088 priv->multi_secfilter[i] = NULL;
1089 }
1090 }
1091
1092 priv->demux->release_section_feed(priv->demux, priv->secfeed);
1093 priv->secfeed = NULL;
1094 } else
1095 printk("%s: no feed to stop\n", dev->name);
1096 } else if (priv->feedtype == DVB_NET_FEEDTYPE_ULE) {
1097 if (priv->tsfeed) {
1098 if (priv->tsfeed->is_filtering) {
1099 dprintk("%s: stop tsfeed\n", __func__);
1100 priv->tsfeed->stop_filtering(priv->tsfeed);
1101 }
1102 priv->demux->release_ts_feed(priv->demux, priv->tsfeed);
1103 priv->tsfeed = NULL;
1104 }
1105 else
1106 printk("%s: no ts feed to stop\n", dev->name);
1107 } else
1108 ret = -EINVAL;
1109 mutex_unlock(&priv->mutex);
1110 return ret;
1111}
1112
1113
1114static int dvb_set_mc_filter (struct net_device *dev, struct dev_mc_list *mc)
1115{
1116 struct dvb_net_priv *priv = netdev_priv(dev);
1117
1118 if (priv->multi_num == DVB_NET_MULTICAST_MAX)
1119 return -ENOMEM;
1120
1121 memcpy(priv->multi_macs[priv->multi_num], mc->dmi_addr, 6);
1122
1123 priv->multi_num++;
1124 return 0;
1125}
1126
1127
1128static void wq_set_multicast_list (struct work_struct *work)
1129{
1130 struct dvb_net_priv *priv =
1131 container_of(work, struct dvb_net_priv, set_multicast_list_wq);
1132 struct net_device *dev = priv->net;
1133
1134 dvb_net_feed_stop(dev);
1135 priv->rx_mode = RX_MODE_UNI;
1136 netif_addr_lock_bh(dev);
1137
1138 if (dev->flags & IFF_PROMISC) {
1139 dprintk("%s: promiscuous mode\n", dev->name);
1140 priv->rx_mode = RX_MODE_PROMISC;
1141 } else if ((dev->flags & IFF_ALLMULTI)) {
1142 dprintk("%s: allmulti mode\n", dev->name);
1143 priv->rx_mode = RX_MODE_ALL_MULTI;
1144 } else if (dev->mc_count) {
1145 int mci;
1146 struct dev_mc_list *mc;
1147
1148 dprintk("%s: set_mc_list, %d entries\n",
1149 dev->name, dev->mc_count);
1150
1151 priv->rx_mode = RX_MODE_MULTI;
1152 priv->multi_num = 0;
1153
1154 for (mci = 0, mc=dev->mc_list;
1155 mci < dev->mc_count;
1156 mc = mc->next, mci++) {
1157 dvb_set_mc_filter(dev, mc);
1158 }
1159 }
1160
1161 netif_addr_unlock_bh(dev);
1162 dvb_net_feed_start(dev);
1163}
1164
1165
1166static void dvb_net_set_multicast_list (struct net_device *dev)
1167{
1168 struct dvb_net_priv *priv = netdev_priv(dev);
1169 schedule_work(&priv->set_multicast_list_wq);
1170}
1171
1172
1173static void wq_restart_net_feed (struct work_struct *work)
1174{
1175 struct dvb_net_priv *priv =
1176 container_of(work, struct dvb_net_priv, restart_net_feed_wq);
1177 struct net_device *dev = priv->net;
1178
1179 if (netif_running(dev)) {
1180 dvb_net_feed_stop(dev);
1181 dvb_net_feed_start(dev);
1182 }
1183}
1184
1185
1186static int dvb_net_set_mac (struct net_device *dev, void *p)
1187{
1188 struct dvb_net_priv *priv = netdev_priv(dev);
1189 struct sockaddr *addr=p;
1190
1191 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1192
1193 if (netif_running(dev))
1194 schedule_work(&priv->restart_net_feed_wq);
1195
1196 return 0;
1197}
1198
1199
1200static int dvb_net_open(struct net_device *dev)
1201{
1202 struct dvb_net_priv *priv = netdev_priv(dev);
1203
1204 priv->in_use++;
1205 dvb_net_feed_start(dev);
1206 return 0;
1207}
1208
1209
1210static int dvb_net_stop(struct net_device *dev)
1211{
1212 struct dvb_net_priv *priv = netdev_priv(dev);
1213
1214 priv->in_use--;
1215 return dvb_net_feed_stop(dev);
1216}
1217
1218static const struct header_ops dvb_header_ops = {
1219 .create = eth_header,
1220 .parse = eth_header_parse,
1221 .rebuild = eth_rebuild_header,
1222};
1223
1224
1225static const struct net_device_ops dvb_netdev_ops = {
1226 .ndo_open = dvb_net_open,
1227 .ndo_stop = dvb_net_stop,
1228 .ndo_start_xmit = dvb_net_tx,
1229 .ndo_set_multicast_list = dvb_net_set_multicast_list,
1230 .ndo_set_mac_address = dvb_net_set_mac,
1231 .ndo_change_mtu = eth_change_mtu,
1232 .ndo_validate_addr = eth_validate_addr,
1233};
1234
1235static void dvb_net_setup(struct net_device *dev)
1236{
1237 ether_setup(dev);
1238
1239 dev->header_ops = &dvb_header_ops;
1240 dev->netdev_ops = &dvb_netdev_ops;
1241 dev->mtu = 4096;
1242 dev->mc_count = 0;
1243
1244 dev->flags |= IFF_NOARP;
1245}
1246
1247static int get_if(struct dvb_net *dvbnet)
1248{
1249 int i;
1250
1251 for (i=0; i<DVB_NET_DEVICES_MAX; i++)
1252 if (!dvbnet->state[i])
1253 break;
1254
1255 if (i == DVB_NET_DEVICES_MAX)
1256 return -1;
1257
1258 dvbnet->state[i]=1;
1259 return i;
1260}
1261
1262static int dvb_net_add_if(struct dvb_net *dvbnet, u16 pid, u8 feedtype)
1263{
1264 struct net_device *net;
1265 struct dvb_net_priv *priv;
1266 int result;
1267 int if_num;
1268
1269 if (feedtype != DVB_NET_FEEDTYPE_MPE && feedtype != DVB_NET_FEEDTYPE_ULE)
1270 return -EINVAL;
1271 if ((if_num = get_if(dvbnet)) < 0)
1272 return -EINVAL;
1273
1274 net = alloc_netdev(sizeof(struct dvb_net_priv), "dvb", dvb_net_setup);
1275 if (!net)
1276 return -ENOMEM;
1277
1278 if (dvbnet->dvbdev->id)
1279 snprintf(net->name, IFNAMSIZ, "dvb%d%u%d",
1280 dvbnet->dvbdev->adapter->num, dvbnet->dvbdev->id, if_num);
1281 else
1282
1283 snprintf(net->name, IFNAMSIZ, "dvb%d_%d",
1284 dvbnet->dvbdev->adapter->num, if_num);
1285
1286 net->addr_len = 6;
1287 memcpy(net->dev_addr, dvbnet->dvbdev->adapter->proposed_mac, 6);
1288
1289 dvbnet->device[if_num] = net;
1290
1291 priv = netdev_priv(net);
1292 priv->net = net;
1293 priv->demux = dvbnet->demux;
1294 priv->pid = pid;
1295 priv->rx_mode = RX_MODE_UNI;
1296 priv->need_pusi = 1;
1297 priv->tscc = 0;
1298 priv->feedtype = feedtype;
1299 reset_ule(priv);
1300
1301 INIT_WORK(&priv->set_multicast_list_wq, wq_set_multicast_list);
1302 INIT_WORK(&priv->restart_net_feed_wq, wq_restart_net_feed);
1303 mutex_init(&priv->mutex);
1304
1305 net->base_addr = pid;
1306
1307 if ((result = register_netdev(net)) < 0) {
1308 dvbnet->device[if_num] = NULL;
1309 free_netdev(net);
1310 return result;
1311 }
1312 printk("dvb_net: created network interface %s\n", net->name);
1313
1314 return if_num;
1315}
1316
1317static int dvb_net_remove_if(struct dvb_net *dvbnet, unsigned long num)
1318{
1319 struct net_device *net = dvbnet->device[num];
1320 struct dvb_net_priv *priv;
1321
1322 if (!dvbnet->state[num])
1323 return -EINVAL;
1324 priv = netdev_priv(net);
1325 if (priv->in_use)
1326 return -EBUSY;
1327
1328 dvb_net_stop(net);
1329 flush_scheduled_work();
1330 printk("dvb_net: removed network interface %s\n", net->name);
1331 unregister_netdev(net);
1332 dvbnet->state[num]=0;
1333 dvbnet->device[num] = NULL;
1334 free_netdev(net);
1335
1336 return 0;
1337}
1338
1339static int dvb_net_do_ioctl(struct inode *inode, struct file *file,
1340 unsigned int cmd, void *parg)
1341{
1342 struct dvb_device *dvbdev = file->private_data;
1343 struct dvb_net *dvbnet = dvbdev->priv;
1344
1345 if (((file->f_flags&O_ACCMODE)==O_RDONLY))
1346 return -EPERM;
1347
1348 switch (cmd) {
1349 case NET_ADD_IF:
1350 {
1351 struct dvb_net_if *dvbnetif = parg;
1352 int result;
1353
1354 if (!capable(CAP_SYS_ADMIN))
1355 return -EPERM;
1356
1357 if (!try_module_get(dvbdev->adapter->module))
1358 return -EPERM;
1359
1360 result=dvb_net_add_if(dvbnet, dvbnetif->pid, dvbnetif->feedtype);
1361 if (result<0) {
1362 module_put(dvbdev->adapter->module);
1363 return result;
1364 }
1365 dvbnetif->if_num=result;
1366 break;
1367 }
1368 case NET_GET_IF:
1369 {
1370 struct net_device *netdev;
1371 struct dvb_net_priv *priv_data;
1372 struct dvb_net_if *dvbnetif = parg;
1373
1374 if (dvbnetif->if_num >= DVB_NET_DEVICES_MAX ||
1375 !dvbnet->state[dvbnetif->if_num])
1376 return -EINVAL;
1377
1378 netdev = dvbnet->device[dvbnetif->if_num];
1379
1380 priv_data = netdev_priv(netdev);
1381 dvbnetif->pid=priv_data->pid;
1382 dvbnetif->feedtype=priv_data->feedtype;
1383 break;
1384 }
1385 case NET_REMOVE_IF:
1386 {
1387 int ret;
1388
1389 if (!capable(CAP_SYS_ADMIN))
1390 return -EPERM;
1391 if ((unsigned long) parg >= DVB_NET_DEVICES_MAX)
1392 return -EINVAL;
1393 ret = dvb_net_remove_if(dvbnet, (unsigned long) parg);
1394 if (!ret)
1395 module_put(dvbdev->adapter->module);
1396 return ret;
1397 }
1398
1399
1400 case __NET_ADD_IF_OLD:
1401 {
1402 struct __dvb_net_if_old *dvbnetif = parg;
1403 int result;
1404
1405 if (!capable(CAP_SYS_ADMIN))
1406 return -EPERM;
1407
1408 if (!try_module_get(dvbdev->adapter->module))
1409 return -EPERM;
1410
1411 result=dvb_net_add_if(dvbnet, dvbnetif->pid, DVB_NET_FEEDTYPE_MPE);
1412 if (result<0) {
1413 module_put(dvbdev->adapter->module);
1414 return result;
1415 }
1416 dvbnetif->if_num=result;
1417 break;
1418 }
1419 case __NET_GET_IF_OLD:
1420 {
1421 struct net_device *netdev;
1422 struct dvb_net_priv *priv_data;
1423 struct __dvb_net_if_old *dvbnetif = parg;
1424
1425 if (dvbnetif->if_num >= DVB_NET_DEVICES_MAX ||
1426 !dvbnet->state[dvbnetif->if_num])
1427 return -EINVAL;
1428
1429 netdev = dvbnet->device[dvbnetif->if_num];
1430
1431 priv_data = netdev_priv(netdev);
1432 dvbnetif->pid=priv_data->pid;
1433 break;
1434 }
1435 default:
1436 return -ENOTTY;
1437 }
1438 return 0;
1439}
1440
1441static int dvb_net_ioctl(struct inode *inode, struct file *file,
1442 unsigned int cmd, unsigned long arg)
1443{
1444 return dvb_usercopy(inode, file, cmd, arg, dvb_net_do_ioctl);
1445}
1446
1447static int dvb_net_close(struct inode *inode, struct file *file)
1448{
1449 struct dvb_device *dvbdev = file->private_data;
1450 struct dvb_net *dvbnet = dvbdev->priv;
1451
1452 dvb_generic_release(inode, file);
1453
1454 if(dvbdev->users == 1 && dvbnet->exit == 1) {
1455 fops_put(file->f_op);
1456 file->f_op = NULL;
1457 wake_up(&dvbdev->wait_queue);
1458 }
1459 return 0;
1460}
1461
1462
1463static const struct file_operations dvb_net_fops = {
1464 .owner = THIS_MODULE,
1465 .ioctl = dvb_net_ioctl,
1466 .open = dvb_generic_open,
1467 .release = dvb_net_close,
1468};
1469
1470static struct dvb_device dvbdev_net = {
1471 .priv = NULL,
1472 .users = 1,
1473 .writers = 1,
1474 .fops = &dvb_net_fops,
1475};
1476
1477
1478void dvb_net_release (struct dvb_net *dvbnet)
1479{
1480 int i;
1481
1482 dvbnet->exit = 1;
1483 if (dvbnet->dvbdev->users < 1)
1484 wait_event(dvbnet->dvbdev->wait_queue,
1485 dvbnet->dvbdev->users==1);
1486
1487 dvb_unregister_device(dvbnet->dvbdev);
1488
1489 for (i=0; i<DVB_NET_DEVICES_MAX; i++) {
1490 if (!dvbnet->state[i])
1491 continue;
1492 dvb_net_remove_if(dvbnet, i);
1493 }
1494}
1495EXPORT_SYMBOL(dvb_net_release);
1496
1497
1498int dvb_net_init (struct dvb_adapter *adap, struct dvb_net *dvbnet,
1499 struct dmx_demux *dmx)
1500{
1501 int i;
1502
1503 dvbnet->demux = dmx;
1504
1505 for (i=0; i<DVB_NET_DEVICES_MAX; i++)
1506 dvbnet->state[i] = 0;
1507
1508 dvb_register_device (adap, &dvbnet->dvbdev, &dvbdev_net,
1509 dvbnet, DVB_DEVICE_NET);
1510
1511 return 0;
1512}
1513EXPORT_SYMBOL(dvb_net_init);
1514