tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * net/sched/act_meta_mark.c IFE skb->mark metadata module
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 *
9 * copyright Jamal Hadi Salim (2015)
10 *
11*/
12
13#include <linux/types.h>
14#include <linux/kernel.h>
15#include <linux/string.h>
16#include <linux/errno.h>
17#include <linux/skbuff.h>
18#include <linux/rtnetlink.h>
19#include <linux/module.h>
20#include <linux/init.h>
21#include <net/netlink.h>
22#include <net/pkt_sched.h>
23#include <uapi/linux/tc_act/tc_ife.h>
24#include <net/tc_act/tc_ife.h>
25#include <linux/rtnetlink.h>
26
27static int skbmark_encode(struct sk_buff *skb, void *skbdata,
28 struct tcf_meta_info *e)
29{
30 u32 ifemark = skb->mark;
31
32 return ife_encode_meta_u32(ifemark, skbdata, e);
33}
34
35static int skbmark_decode(struct sk_buff *skb, void *data, u16 len)
36{
37 u32 ifemark = *(u32 *)data;
38
39 skb->mark = ntohl(ifemark);
40 return 0;
41}
42
43static int skbmark_check(struct sk_buff *skb, struct tcf_meta_info *e)
44{
45 return ife_check_meta_u32(skb->mark, e);
46}
47
48static struct tcf_meta_ops ife_skbmark_ops = {
49 .metaid = IFE_META_SKBMARK,
50 .metatype = NLA_U32,
51 .name = "skbmark",
52 .synopsis = "skb mark 32 bit metadata",
53 .check_presence = skbmark_check,
54 .encode = skbmark_encode,
55 .decode = skbmark_decode,
56 .get = ife_get_meta_u32,
57 .alloc = ife_alloc_meta_u32,
58 .release = ife_release_meta_gen,
59 .validate = ife_validate_meta_u32,
60 .owner = THIS_MODULE,
61};
62
63static int __init ifemark_init_module(void)
64{
65 return register_ife_op(&ife_skbmark_ops);
66}
67
68static void __exit ifemark_cleanup_module(void)
69{
70 unregister_ife_op(&ife_skbmark_ops);
71}
72
73module_init(ifemark_init_module);
74module_exit(ifemark_cleanup_module);
75
76MODULE_AUTHOR("Jamal Hadi Salim(2015)");
77MODULE_DESCRIPTION("Inter-FE skb mark metadata module");
78MODULE_LICENSE("GPL");
79MODULE_ALIAS_IFE_META(IFE_META_SKBMARK);