36 	packet_t *pkt;  in packet_alloc()  local
38 	pkt = malloc(sizeof(packet_t) + chan->mru);  in packet_alloc()
39 	if (pkt == NULL) {  in packet_alloc()
44 	memset(pkt, 0, sizeof(packet_t));  in packet_alloc()
45 	STAILQ_INIT(&pkt->extlist);  in packet_alloc()
46 	pkt->ptr = pkt->buf;  in packet_alloc()
48 	pkt->chan = chan;  in packet_alloc()
51 	return pkt;  in packet_alloc()
55 packet_free(packet_t *pkt)  in packet_free()  argument
59 	if (pkt->refcnt-- > 0)  in packet_free()
62 	while ((eh = STAILQ_FIRST(&pkt->extlist)) != NULL) {  in packet_free()
63 		STAILQ_REMOVE_HEAD(&pkt->extlist, next);  in packet_free()
67 	pkt->chan->refcnt--;  in packet_free()
68 	if (pkt->chan->refcnt == 0)  in packet_free()
69 		channel_free(pkt->chan);  in packet_free()
71 	free(pkt);  in packet_free()
75 packet_adj(packet_t *pkt, size_t size)  in packet_adj()  argument
78 	assert(pkt->refcnt == 0);  in packet_adj()
79 	assert(pkt->len >= size);  in packet_adj()
81 	pkt->ptr += size;  in packet_adj()
82 	pkt->len -= size;  in packet_adj()
86 pkthdr_alloc(packet_t *pkt)  in pkthdr_alloc()  argument
96 	ph->data = pkt;  in pkthdr_alloc()
97 	pkt->refcnt++;  in pkthdr_alloc()