1*d4514f0bSApple OSS Distributions /*
2*d4514f0bSApple OSS Distributions * Copyright (c) 2024 Apple Inc. All rights reserved.
3*d4514f0bSApple OSS Distributions *
4*d4514f0bSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*d4514f0bSApple OSS Distributions *
6*d4514f0bSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code
7*d4514f0bSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License
8*d4514f0bSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in
9*d4514f0bSApple OSS Distributions * compliance with the License. The rights granted to you under the License
10*d4514f0bSApple OSS Distributions * may not be used to create, or enable the creation or redistribution of,
11*d4514f0bSApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to
12*d4514f0bSApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any
13*d4514f0bSApple OSS Distributions * terms of an Apple operating system software license agreement.
14*d4514f0bSApple OSS Distributions *
15*d4514f0bSApple OSS Distributions * Please obtain a copy of the License at
16*d4514f0bSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*d4514f0bSApple OSS Distributions *
18*d4514f0bSApple OSS Distributions * The Original Code and all software distributed under the License are
19*d4514f0bSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*d4514f0bSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*d4514f0bSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*d4514f0bSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*d4514f0bSApple OSS Distributions * Please see the License for the specific language governing rights and
24*d4514f0bSApple OSS Distributions * limitations under the License.
25*d4514f0bSApple OSS Distributions *
26*d4514f0bSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*d4514f0bSApple OSS Distributions */
28*d4514f0bSApple OSS Distributions
29*d4514f0bSApple OSS Distributions /*
30*d4514f0bSApple OSS Distributions * mblist.h
31*d4514f0bSApple OSS Distributions */
32*d4514f0bSApple OSS Distributions
33*d4514f0bSApple OSS Distributions #ifndef _NET_MBLIST_H
34*d4514f0bSApple OSS Distributions #define _NET_MBLIST_H
35*d4514f0bSApple OSS Distributions
36*d4514f0bSApple OSS Distributions #include <sys/kpi_mbuf.h>
37*d4514f0bSApple OSS Distributions #include <stdint.h>
38*d4514f0bSApple OSS Distributions
39*d4514f0bSApple OSS Distributions /*
40*d4514f0bSApple OSS Distributions * Type: mblist
41*d4514f0bSApple OSS Distributions * Purpose:
42*d4514f0bSApple OSS Distributions * Simple type to store head, tail pointers for a list of mbuf packets.
43*d4514f0bSApple OSS Distributions */
44*d4514f0bSApple OSS Distributions typedef struct {
45*d4514f0bSApple OSS Distributions mbuf_t head;
46*d4514f0bSApple OSS Distributions mbuf_t tail;
47*d4514f0bSApple OSS Distributions uint32_t bytes;
48*d4514f0bSApple OSS Distributions uint32_t count;
49*d4514f0bSApple OSS Distributions } mblist, * mblist_t;
50*d4514f0bSApple OSS Distributions
51*d4514f0bSApple OSS Distributions static inline void
mblist_init(mblist_t list)52*d4514f0bSApple OSS Distributions mblist_init(mblist_t list)
53*d4514f0bSApple OSS Distributions {
54*d4514f0bSApple OSS Distributions bzero(list, sizeof(*list));
55*d4514f0bSApple OSS Distributions }
56*d4514f0bSApple OSS Distributions
57*d4514f0bSApple OSS Distributions static inline void
mblist_append(mblist_t list,mbuf_t m)58*d4514f0bSApple OSS Distributions mblist_append(mblist_t list, mbuf_t m)
59*d4514f0bSApple OSS Distributions {
60*d4514f0bSApple OSS Distributions if (list->head == NULL) {
61*d4514f0bSApple OSS Distributions list->head = m;
62*d4514f0bSApple OSS Distributions } else {
63*d4514f0bSApple OSS Distributions list->tail->m_nextpkt = m;
64*d4514f0bSApple OSS Distributions }
65*d4514f0bSApple OSS Distributions list->tail = m;
66*d4514f0bSApple OSS Distributions list->count++;
67*d4514f0bSApple OSS Distributions list->bytes += mbuf_pkthdr_len(m);
68*d4514f0bSApple OSS Distributions }
69*d4514f0bSApple OSS Distributions
70*d4514f0bSApple OSS Distributions static inline void
mblist_append_list(mblist_t list,mblist append)71*d4514f0bSApple OSS Distributions mblist_append_list(mblist_t list, mblist append)
72*d4514f0bSApple OSS Distributions {
73*d4514f0bSApple OSS Distributions VERIFY(append.head != NULL);
74*d4514f0bSApple OSS Distributions if (list->head == NULL) {
75*d4514f0bSApple OSS Distributions *list = append;
76*d4514f0bSApple OSS Distributions } else {
77*d4514f0bSApple OSS Distributions VERIFY(list->tail != NULL);
78*d4514f0bSApple OSS Distributions list->tail->m_nextpkt = append.head;
79*d4514f0bSApple OSS Distributions list->tail = append.tail;
80*d4514f0bSApple OSS Distributions list->count += append.count;
81*d4514f0bSApple OSS Distributions list->bytes += append.bytes;
82*d4514f0bSApple OSS Distributions }
83*d4514f0bSApple OSS Distributions }
84*d4514f0bSApple OSS Distributions
85*d4514f0bSApple OSS Distributions #endif /* _NET_MBLIST_H */
86