1*bbb1b6f9SApple OSS Distributions /*
2*bbb1b6f9SApple OSS Distributions * Copyright (c) 2024 Apple Inc. All rights reserved.
3*bbb1b6f9SApple OSS Distributions *
4*bbb1b6f9SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*bbb1b6f9SApple OSS Distributions *
6*bbb1b6f9SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code
7*bbb1b6f9SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License
8*bbb1b6f9SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in
9*bbb1b6f9SApple OSS Distributions * compliance with the License. The rights granted to you under the License
10*bbb1b6f9SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of,
11*bbb1b6f9SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to
12*bbb1b6f9SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any
13*bbb1b6f9SApple OSS Distributions * terms of an Apple operating system software license agreement.
14*bbb1b6f9SApple OSS Distributions *
15*bbb1b6f9SApple OSS Distributions * Please obtain a copy of the License at
16*bbb1b6f9SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*bbb1b6f9SApple OSS Distributions *
18*bbb1b6f9SApple OSS Distributions * The Original Code and all software distributed under the License are
19*bbb1b6f9SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*bbb1b6f9SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*bbb1b6f9SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*bbb1b6f9SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*bbb1b6f9SApple OSS Distributions * Please see the License for the specific language governing rights and
24*bbb1b6f9SApple OSS Distributions * limitations under the License.
25*bbb1b6f9SApple OSS Distributions *
26*bbb1b6f9SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*bbb1b6f9SApple OSS Distributions */
28*bbb1b6f9SApple OSS Distributions
29*bbb1b6f9SApple OSS Distributions /*
30*bbb1b6f9SApple OSS Distributions * mblist.h
31*bbb1b6f9SApple OSS Distributions */
32*bbb1b6f9SApple OSS Distributions
33*bbb1b6f9SApple OSS Distributions #ifndef _NET_MBLIST_H
34*bbb1b6f9SApple OSS Distributions #define _NET_MBLIST_H
35*bbb1b6f9SApple OSS Distributions
36*bbb1b6f9SApple OSS Distributions #include <sys/kpi_mbuf.h>
37*bbb1b6f9SApple OSS Distributions #include <stdint.h>
38*bbb1b6f9SApple OSS Distributions
39*bbb1b6f9SApple OSS Distributions /*
40*bbb1b6f9SApple OSS Distributions * Type: mblist
41*bbb1b6f9SApple OSS Distributions * Purpose:
42*bbb1b6f9SApple OSS Distributions * Simple type to store head, tail pointers for a list of mbuf packets.
43*bbb1b6f9SApple OSS Distributions */
44*bbb1b6f9SApple OSS Distributions typedef struct {
45*bbb1b6f9SApple OSS Distributions mbuf_t head;
46*bbb1b6f9SApple OSS Distributions mbuf_t tail;
47*bbb1b6f9SApple OSS Distributions uint32_t bytes;
48*bbb1b6f9SApple OSS Distributions uint32_t count;
49*bbb1b6f9SApple OSS Distributions } mblist, * mblist_t;
50*bbb1b6f9SApple OSS Distributions
51*bbb1b6f9SApple OSS Distributions static inline void
mblist_init(mblist_t list)52*bbb1b6f9SApple OSS Distributions mblist_init(mblist_t list)
53*bbb1b6f9SApple OSS Distributions {
54*bbb1b6f9SApple OSS Distributions bzero(list, sizeof(*list));
55*bbb1b6f9SApple OSS Distributions }
56*bbb1b6f9SApple OSS Distributions
57*bbb1b6f9SApple OSS Distributions static inline void
mblist_append(mblist_t list,mbuf_t m)58*bbb1b6f9SApple OSS Distributions mblist_append(mblist_t list, mbuf_t m)
59*bbb1b6f9SApple OSS Distributions {
60*bbb1b6f9SApple OSS Distributions if (list->head == NULL) {
61*bbb1b6f9SApple OSS Distributions list->head = m;
62*bbb1b6f9SApple OSS Distributions } else {
63*bbb1b6f9SApple OSS Distributions list->tail->m_nextpkt = m;
64*bbb1b6f9SApple OSS Distributions }
65*bbb1b6f9SApple OSS Distributions list->tail = m;
66*bbb1b6f9SApple OSS Distributions list->count++;
67*bbb1b6f9SApple OSS Distributions list->bytes += mbuf_pkthdr_len(m);
68*bbb1b6f9SApple OSS Distributions }
69*bbb1b6f9SApple OSS Distributions
70*bbb1b6f9SApple OSS Distributions static inline void
mblist_append_list(mblist_t list,mblist append)71*bbb1b6f9SApple OSS Distributions mblist_append_list(mblist_t list, mblist append)
72*bbb1b6f9SApple OSS Distributions {
73*bbb1b6f9SApple OSS Distributions VERIFY(append.head != NULL);
74*bbb1b6f9SApple OSS Distributions if (list->head == NULL) {
75*bbb1b6f9SApple OSS Distributions *list = append;
76*bbb1b6f9SApple OSS Distributions } else {
77*bbb1b6f9SApple OSS Distributions VERIFY(list->tail != NULL);
78*bbb1b6f9SApple OSS Distributions list->tail->m_nextpkt = append.head;
79*bbb1b6f9SApple OSS Distributions list->tail = append.tail;
80*bbb1b6f9SApple OSS Distributions list->count += append.count;
81*bbb1b6f9SApple OSS Distributions list->bytes += append.bytes;
82*bbb1b6f9SApple OSS Distributions }
83*bbb1b6f9SApple OSS Distributions }
84*bbb1b6f9SApple OSS Distributions
85*bbb1b6f9SApple OSS Distributions #endif /* _NET_MBLIST_H */
86