406
388
skb2->len += len2nd;
407
389
return skb_to_pkt(skb2);
409
EXPORT_SYMBOL(cfpkt_split);
411
char *cfpkt_log_pkt(struct cfpkt *pkt, char *buf, int buflen)
413
struct sk_buff *skb = pkt_to_skb(pkt);
418
* Sanity check buffer length, it needs to be at least as large as
419
* the header info: ~=50+ bytes
424
snprintf(buf, buflen, "%s: pkt:%p len:%ld(%ld+%ld) {%ld,%ld} data: [",
425
is_erronous(pkt) ? "ERRONOUS-SKB" :
426
(skb->data_len != 0 ? "COMPLEX-SKB" : "SKB"),
429
(long) (skb_tail_pointer(skb) - skb->data),
430
(long) skb->data_len,
431
(long) (skb->data - skb->head),
432
(long) (skb_tail_pointer(skb) - skb->head));
433
p = buf + strlen(buf);
435
for (i = 0; i < skb_tail_pointer(skb) - skb->data && i < 300; i++) {
436
if (p > buf + buflen - 10) {
438
p = buf + strlen(buf);
441
sprintf(p, "%02x,", skb->data[i]);
442
p = buf + strlen(buf);
447
EXPORT_SYMBOL(cfpkt_log_pkt);
449
int cfpkt_raw_append(struct cfpkt *pkt, void **buf, unsigned int buflen)
451
struct sk_buff *skb = pkt_to_skb(pkt);
452
struct sk_buff *lastskb;
454
caif_assert(buf != NULL);
455
if (unlikely(is_erronous(pkt)))
457
/* Make sure SKB is writable */
458
if (unlikely(skb_cow_data(skb, 0, &lastskb) < 0)) {
459
PKT_ERROR(pkt, "skb_cow_data failed\n");
463
if (unlikely(skb_linearize(skb) != 0)) {
464
PKT_ERROR(pkt, "linearize failed\n");
468
if (unlikely(skb_tailroom(skb) < buflen)) {
469
PKT_ERROR(pkt, "buffer too short - failed\n");
473
*buf = skb_put(skb, buflen);
476
EXPORT_SYMBOL(cfpkt_raw_append);
478
int cfpkt_raw_extract(struct cfpkt *pkt, void **buf, unsigned int buflen)
480
struct sk_buff *skb = pkt_to_skb(pkt);
482
caif_assert(buf != NULL);
483
if (unlikely(is_erronous(pkt)))
486
if (unlikely(buflen > skb->len)) {
487
PKT_ERROR(pkt, "buflen too large - failed\n");
491
if (unlikely(buflen > skb_headlen(skb))) {
492
if (unlikely(skb_linearize(skb) != 0)) {
493
PKT_ERROR(pkt, "linearize failed\n");
499
skb_pull(skb, buflen);
503
EXPORT_SYMBOL(cfpkt_raw_extract);
505
inline bool cfpkt_erroneous(struct cfpkt *pkt)
392
bool cfpkt_erroneous(struct cfpkt *pkt)
507
394
return cfpkt_priv(pkt)->erronous;
509
EXPORT_SYMBOL(cfpkt_erroneous);
511
struct cfpktq *cfpktq_create(void)
513
struct cfpktq *q = kmalloc(sizeof(struct cfpktq), GFP_ATOMIC);
516
skb_queue_head_init(&q->head);
517
atomic_set(&q->count, 0);
518
spin_lock_init(&q->lock);
521
EXPORT_SYMBOL(cfpktq_create);
523
void cfpkt_queue(struct cfpktq *pktq, struct cfpkt *pkt, unsigned short prio)
525
atomic_inc(&pktq->count);
526
spin_lock(&pktq->lock);
527
skb_queue_tail(&pktq->head, pkt_to_skb(pkt));
528
spin_unlock(&pktq->lock);
531
EXPORT_SYMBOL(cfpkt_queue);
533
struct cfpkt *cfpkt_qpeek(struct cfpktq *pktq)
536
spin_lock(&pktq->lock);
537
tmp = skb_to_pkt(skb_peek(&pktq->head));
538
spin_unlock(&pktq->lock);
541
EXPORT_SYMBOL(cfpkt_qpeek);
543
struct cfpkt *cfpkt_dequeue(struct cfpktq *pktq)
546
spin_lock(&pktq->lock);
547
pkt = skb_to_pkt(skb_dequeue(&pktq->head));
549
atomic_dec(&pktq->count);
550
caif_assert(atomic_read(&pktq->count) >= 0);
552
spin_unlock(&pktq->lock);
555
EXPORT_SYMBOL(cfpkt_dequeue);
557
int cfpkt_qcount(struct cfpktq *pktq)
559
return atomic_read(&pktq->count);
561
EXPORT_SYMBOL(cfpkt_qcount);
563
struct cfpkt *cfpkt_clone_release(struct cfpkt *pkt)
566
clone = skb_to_pkt(skb_clone(pkt_to_skb(pkt), GFP_ATOMIC));
567
/* Free original packet. */
573
EXPORT_SYMBOL(cfpkt_clone_release);
575
397
struct caif_payload_info *cfpkt_info(struct cfpkt *pkt)
577
399
return (struct caif_payload_info *)&pkt_to_skb(pkt)->cb;
579
EXPORT_SYMBOL(cfpkt_info);