1*a1e26a70SApple OSS Distributions /*
2*a1e26a70SApple OSS Distributions * Copyright (c) 2024 Apple Inc. All rights reserved.
3*a1e26a70SApple OSS Distributions *
4*a1e26a70SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*a1e26a70SApple OSS Distributions *
6*a1e26a70SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code
7*a1e26a70SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License
8*a1e26a70SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in
9*a1e26a70SApple OSS Distributions * compliance with the License. The rights granted to you under the License
10*a1e26a70SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of,
11*a1e26a70SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to
12*a1e26a70SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any
13*a1e26a70SApple OSS Distributions * terms of an Apple operating system software license agreement.
14*a1e26a70SApple OSS Distributions *
15*a1e26a70SApple OSS Distributions * Please obtain a copy of the License at
16*a1e26a70SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*a1e26a70SApple OSS Distributions *
18*a1e26a70SApple OSS Distributions * The Original Code and all software distributed under the License are
19*a1e26a70SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*a1e26a70SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*a1e26a70SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*a1e26a70SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*a1e26a70SApple OSS Distributions * Please see the License for the specific language governing rights and
24*a1e26a70SApple OSS Distributions * limitations under the License.
25*a1e26a70SApple OSS Distributions *
26*a1e26a70SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*a1e26a70SApple OSS Distributions */
28*a1e26a70SApple OSS Distributions
29*a1e26a70SApple OSS Distributions /*
30*a1e26a70SApple OSS Distributions * mblist.h
31*a1e26a70SApple OSS Distributions */
32*a1e26a70SApple OSS Distributions
33*a1e26a70SApple OSS Distributions #ifndef _NET_MBLIST_H
34*a1e26a70SApple OSS Distributions #define _NET_MBLIST_H
35*a1e26a70SApple OSS Distributions
36*a1e26a70SApple OSS Distributions #include <sys/kpi_mbuf.h>
37*a1e26a70SApple OSS Distributions #include <stdint.h>
38*a1e26a70SApple OSS Distributions
39*a1e26a70SApple OSS Distributions /*
40*a1e26a70SApple OSS Distributions * Type: mblist
41*a1e26a70SApple OSS Distributions * Purpose:
42*a1e26a70SApple OSS Distributions * Simple type to store head, tail pointers for a list of mbuf packets.
43*a1e26a70SApple OSS Distributions */
44*a1e26a70SApple OSS Distributions typedef struct {
45*a1e26a70SApple OSS Distributions mbuf_t head;
46*a1e26a70SApple OSS Distributions mbuf_t tail;
47*a1e26a70SApple OSS Distributions uint32_t bytes;
48*a1e26a70SApple OSS Distributions uint32_t count;
49*a1e26a70SApple OSS Distributions } mblist, * mblist_t;
50*a1e26a70SApple OSS Distributions
51*a1e26a70SApple OSS Distributions static inline void
mblist_init(mblist_t list)52*a1e26a70SApple OSS Distributions mblist_init(mblist_t list)
53*a1e26a70SApple OSS Distributions {
54*a1e26a70SApple OSS Distributions bzero(list, sizeof(*list));
55*a1e26a70SApple OSS Distributions }
56*a1e26a70SApple OSS Distributions
57*a1e26a70SApple OSS Distributions static inline void
mblist_append(mblist_t list,mbuf_t m)58*a1e26a70SApple OSS Distributions mblist_append(mblist_t list, mbuf_t m)
59*a1e26a70SApple OSS Distributions {
60*a1e26a70SApple OSS Distributions if (list->head == NULL) {
61*a1e26a70SApple OSS Distributions list->head = m;
62*a1e26a70SApple OSS Distributions } else {
63*a1e26a70SApple OSS Distributions list->tail->m_nextpkt = m;
64*a1e26a70SApple OSS Distributions }
65*a1e26a70SApple OSS Distributions list->tail = m;
66*a1e26a70SApple OSS Distributions list->count++;
67*a1e26a70SApple OSS Distributions list->bytes += mbuf_pkthdr_len(m);
68*a1e26a70SApple OSS Distributions }
69*a1e26a70SApple OSS Distributions
70*a1e26a70SApple OSS Distributions static inline void
mblist_append_list(mblist_t list,mblist append)71*a1e26a70SApple OSS Distributions mblist_append_list(mblist_t list, mblist append)
72*a1e26a70SApple OSS Distributions {
73*a1e26a70SApple OSS Distributions VERIFY(append.head != NULL);
74*a1e26a70SApple OSS Distributions if (list->head == NULL) {
75*a1e26a70SApple OSS Distributions *list = append;
76*a1e26a70SApple OSS Distributions } else {
77*a1e26a70SApple OSS Distributions VERIFY(list->tail != NULL);
78*a1e26a70SApple OSS Distributions list->tail->m_nextpkt = append.head;
79*a1e26a70SApple OSS Distributions list->tail = append.tail;
80*a1e26a70SApple OSS Distributions list->count += append.count;
81*a1e26a70SApple OSS Distributions list->bytes += append.bytes;
82*a1e26a70SApple OSS Distributions }
83*a1e26a70SApple OSS Distributions }
84*a1e26a70SApple OSS Distributions
85*a1e26a70SApple OSS Distributions #endif /* _NET_MBLIST_H */
86