1// SPDX-License-Identifier: GPL-2.0-or-later
 2/*
 3 * net/sched/act_meta_tc_index.c IFE skb->tc_index metadata module
 4 *
 
 
 
 
 
 5 * copyright Jamal Hadi Salim (2016)
 
 6*/
 7
 8#include <linux/types.h>
 9#include <linux/kernel.h>
10#include <linux/string.h>
11#include <linux/errno.h>
12#include <linux/skbuff.h>
13#include <linux/rtnetlink.h>
14#include <linux/module.h>
15#include <linux/init.h>
16#include <net/netlink.h>
17#include <net/pkt_sched.h>
18#include <uapi/linux/tc_act/tc_ife.h>
19#include <net/tc_act/tc_ife.h>
20
21static int skbtcindex_encode(struct sk_buff *skb, void *skbdata,
22			     struct tcf_meta_info *e)
23{
24	u32 ifetc_index = skb->tc_index;
25
26	return ife_encode_meta_u16(ifetc_index, skbdata, e);
27}
28
29static int skbtcindex_decode(struct sk_buff *skb, void *data, u16 len)
30{
31	u16 ifetc_index = *(u16 *)data;
32
33	skb->tc_index = ntohs(ifetc_index);
34	return 0;
35}
36
37static int skbtcindex_check(struct sk_buff *skb, struct tcf_meta_info *e)
38{
39	return ife_check_meta_u16(skb->tc_index, e);
40}
41
42static struct tcf_meta_ops ife_skbtcindex_ops = {
43	.metaid = IFE_META_TCINDEX,
44	.metatype = NLA_U16,
45	.name = "tc_index",
46	.synopsis = "skb tc_index 16 bit metadata",
47	.check_presence = skbtcindex_check,
48	.encode = skbtcindex_encode,
49	.decode = skbtcindex_decode,
50	.get = ife_get_meta_u16,
51	.alloc = ife_alloc_meta_u16,
52	.release = ife_release_meta_gen,
53	.validate = ife_validate_meta_u16,
54	.owner = THIS_MODULE,
55};
56
57static int __init ifetc_index_init_module(void)
58{
59	return register_ife_op(&ife_skbtcindex_ops);
60}
61
62static void __exit ifetc_index_cleanup_module(void)
63{
64	unregister_ife_op(&ife_skbtcindex_ops);
65}
66
67module_init(ifetc_index_init_module);
68module_exit(ifetc_index_cleanup_module);
69
70MODULE_AUTHOR("Jamal Hadi Salim(2016)");
71MODULE_DESCRIPTION("Inter-FE skb tc_index metadata module");
72MODULE_LICENSE("GPL");
73MODULE_ALIAS_IFE_META("tcindex");

 
 1/*
 2 * net/sched/act_meta_tc_index.c IFE skb->tc_index 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 (2016)
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
26static int skbtcindex_encode(struct sk_buff *skb, void *skbdata,
27			     struct tcf_meta_info *e)
28{
29	u32 ifetc_index = skb->tc_index;
30
31	return ife_encode_meta_u16(ifetc_index, skbdata, e);
32}
33
34static int skbtcindex_decode(struct sk_buff *skb, void *data, u16 len)
35{
36	u16 ifetc_index = *(u16 *)data;
37
38	skb->tc_index = ntohs(ifetc_index);
39	return 0;
40}
41
42static int skbtcindex_check(struct sk_buff *skb, struct tcf_meta_info *e)
43{
44	return ife_check_meta_u16(skb->tc_index, e);
45}
46
47static struct tcf_meta_ops ife_skbtcindex_ops = {
48	.metaid = IFE_META_TCINDEX,
49	.metatype = NLA_U16,
50	.name = "tc_index",
51	.synopsis = "skb tc_index 16 bit metadata",
52	.check_presence = skbtcindex_check,
53	.encode = skbtcindex_encode,
54	.decode = skbtcindex_decode,
55	.get = ife_get_meta_u16,
56	.alloc = ife_alloc_meta_u16,
57	.release = ife_release_meta_gen,
58	.validate = ife_validate_meta_u16,
59	.owner = THIS_MODULE,
60};
61
62static int __init ifetc_index_init_module(void)
63{
64	return register_ife_op(&ife_skbtcindex_ops);
65}
66
67static void __exit ifetc_index_cleanup_module(void)
68{
69	unregister_ife_op(&ife_skbtcindex_ops);
70}
71
72module_init(ifetc_index_init_module);
73module_exit(ifetc_index_cleanup_module);
74
75MODULE_AUTHOR("Jamal Hadi Salim(2016)");
76MODULE_DESCRIPTION("Inter-FE skb tc_index metadata module");
77MODULE_LICENSE("GPL");
78MODULE_ALIAS_IFE_META("tcindex");