3 /*-
4  * SPDX-License-Identifier: BSD-2-Clause
40 	packet_t *pkt;  in packet_alloc()  local
42 	pkt = malloc(sizeof(packet_t) + chan->mru);  in packet_alloc()
43 	if (pkt == NULL) {  in packet_alloc()
48 	memset(pkt, 0, sizeof(packet_t));  in packet_alloc()
49 	STAILQ_INIT(&pkt->extlist);  in packet_alloc()
50 	pkt->ptr = pkt->buf;  in packet_alloc()
52 	pkt->chan = chan;  in packet_alloc()
53 	chan->refcnt++;  in packet_alloc()
55 	return pkt;  in packet_alloc()
59 packet_free(packet_t *pkt)  in packet_free()  argument
63 	if (pkt->refcnt-- > 0)  in packet_free()
66 	while ((eh = STAILQ_FIRST(&pkt->extlist)) != NULL) {  in packet_free()
67 		STAILQ_REMOVE_HEAD(&pkt->extlist, next);  in packet_free()
71 	pkt->chan->refcnt--;  in packet_free()
72 	if (pkt->chan->refcnt == 0)  in packet_free()
73 		channel_free(pkt->chan);  in packet_free()
75 	free(pkt);  in packet_free()
79 packet_adj(packet_t *pkt, size_t size)  in packet_adj()  argument
82 	assert(pkt->refcnt == 0);  in packet_adj()
83 	assert(pkt->len >= size);  in packet_adj()
85 	pkt->ptr += size;  in packet_adj()
86 	pkt->len -= size;  in packet_adj()
90 pkthdr_alloc(packet_t *pkt)  in pkthdr_alloc()  argument
100 	ph->data = pkt;  in pkthdr_alloc()
101 	pkt->refcnt++;  in pkthdr_alloc()
110 	packet_free(ph->data);  in pkthdr_free()