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084e2f65 JHS |
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> | |
084e2f65 JHS |
25 | |
26 | static int skbmark_encode(struct sk_buff *skb, void *skbdata, | |
27 | struct tcf_meta_info *e) | |
28 | { | |
29 | u32 ifemark = skb->mark; | |
30 | ||
31 | return ife_encode_meta_u32(ifemark, skbdata, e); | |
32 | } | |
33 | ||
34 | static int skbmark_decode(struct sk_buff *skb, void *data, u16 len) | |
35 | { | |
36 | u32 ifemark = *(u32 *)data; | |
37 | ||
38 | skb->mark = ntohl(ifemark); | |
39 | return 0; | |
40 | } | |
41 | ||
42 | static int skbmark_check(struct sk_buff *skb, struct tcf_meta_info *e) | |
43 | { | |
44 | return ife_check_meta_u32(skb->mark, e); | |
45 | } | |
46 | ||
47 | static struct tcf_meta_ops ife_skbmark_ops = { | |
48 | .metaid = IFE_META_SKBMARK, | |
49 | .metatype = NLA_U32, | |
50 | .name = "skbmark", | |
51 | .synopsis = "skb mark 32 bit metadata", | |
52 | .check_presence = skbmark_check, | |
53 | .encode = skbmark_encode, | |
54 | .decode = skbmark_decode, | |
55 | .get = ife_get_meta_u32, | |
56 | .alloc = ife_alloc_meta_u32, | |
57 | .release = ife_release_meta_gen, | |
58 | .validate = ife_validate_meta_u32, | |
59 | .owner = THIS_MODULE, | |
60 | }; | |
61 | ||
62 | static int __init ifemark_init_module(void) | |
63 | { | |
64 | return register_ife_op(&ife_skbmark_ops); | |
65 | } | |
66 | ||
67 | static void __exit ifemark_cleanup_module(void) | |
68 | { | |
69 | unregister_ife_op(&ife_skbmark_ops); | |
70 | } | |
71 | ||
72 | module_init(ifemark_init_module); | |
73 | module_exit(ifemark_cleanup_module); | |
74 | ||
75 | MODULE_AUTHOR("Jamal Hadi Salim(2015)"); | |
76 | MODULE_DESCRIPTION("Inter-FE skb mark metadata module"); | |
77 | MODULE_LICENSE("GPL"); | |
8f047480 | 78 | MODULE_ALIAS_IFE_META("skbmark"); |