1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * net/sched/act_meta_mark.c IFE skb->mark metadata module
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * copyright Jamal Hadi Salim (2015)
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <linux/types.h>
9*4882a593Smuzhiyun #include <linux/kernel.h>
10*4882a593Smuzhiyun #include <linux/string.h>
11*4882a593Smuzhiyun #include <linux/errno.h>
12*4882a593Smuzhiyun #include <linux/skbuff.h>
13*4882a593Smuzhiyun #include <linux/rtnetlink.h>
14*4882a593Smuzhiyun #include <linux/module.h>
15*4882a593Smuzhiyun #include <linux/init.h>
16*4882a593Smuzhiyun #include <net/netlink.h>
17*4882a593Smuzhiyun #include <net/pkt_sched.h>
18*4882a593Smuzhiyun #include <uapi/linux/tc_act/tc_ife.h>
19*4882a593Smuzhiyun #include <net/tc_act/tc_ife.h>
20*4882a593Smuzhiyun
skbmark_encode(struct sk_buff * skb,void * skbdata,struct tcf_meta_info * e)21*4882a593Smuzhiyun static int skbmark_encode(struct sk_buff *skb, void *skbdata,
22*4882a593Smuzhiyun struct tcf_meta_info *e)
23*4882a593Smuzhiyun {
24*4882a593Smuzhiyun u32 ifemark = skb->mark;
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun return ife_encode_meta_u32(ifemark, skbdata, e);
27*4882a593Smuzhiyun }
28*4882a593Smuzhiyun
skbmark_decode(struct sk_buff * skb,void * data,u16 len)29*4882a593Smuzhiyun static int skbmark_decode(struct sk_buff *skb, void *data, u16 len)
30*4882a593Smuzhiyun {
31*4882a593Smuzhiyun u32 ifemark = *(u32 *)data;
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun skb->mark = ntohl(ifemark);
34*4882a593Smuzhiyun return 0;
35*4882a593Smuzhiyun }
36*4882a593Smuzhiyun
skbmark_check(struct sk_buff * skb,struct tcf_meta_info * e)37*4882a593Smuzhiyun static int skbmark_check(struct sk_buff *skb, struct tcf_meta_info *e)
38*4882a593Smuzhiyun {
39*4882a593Smuzhiyun return ife_check_meta_u32(skb->mark, e);
40*4882a593Smuzhiyun }
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun static struct tcf_meta_ops ife_skbmark_ops = {
43*4882a593Smuzhiyun .metaid = IFE_META_SKBMARK,
44*4882a593Smuzhiyun .metatype = NLA_U32,
45*4882a593Smuzhiyun .name = "skbmark",
46*4882a593Smuzhiyun .synopsis = "skb mark 32 bit metadata",
47*4882a593Smuzhiyun .check_presence = skbmark_check,
48*4882a593Smuzhiyun .encode = skbmark_encode,
49*4882a593Smuzhiyun .decode = skbmark_decode,
50*4882a593Smuzhiyun .get = ife_get_meta_u32,
51*4882a593Smuzhiyun .alloc = ife_alloc_meta_u32,
52*4882a593Smuzhiyun .release = ife_release_meta_gen,
53*4882a593Smuzhiyun .validate = ife_validate_meta_u32,
54*4882a593Smuzhiyun .owner = THIS_MODULE,
55*4882a593Smuzhiyun };
56*4882a593Smuzhiyun
ifemark_init_module(void)57*4882a593Smuzhiyun static int __init ifemark_init_module(void)
58*4882a593Smuzhiyun {
59*4882a593Smuzhiyun return register_ife_op(&ife_skbmark_ops);
60*4882a593Smuzhiyun }
61*4882a593Smuzhiyun
ifemark_cleanup_module(void)62*4882a593Smuzhiyun static void __exit ifemark_cleanup_module(void)
63*4882a593Smuzhiyun {
64*4882a593Smuzhiyun unregister_ife_op(&ife_skbmark_ops);
65*4882a593Smuzhiyun }
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun module_init(ifemark_init_module);
68*4882a593Smuzhiyun module_exit(ifemark_cleanup_module);
69*4882a593Smuzhiyun
70*4882a593Smuzhiyun MODULE_AUTHOR("Jamal Hadi Salim(2015)");
71*4882a593Smuzhiyun MODULE_DESCRIPTION("Inter-FE skb mark metadata module");
72*4882a593Smuzhiyun MODULE_LICENSE("GPL");
73*4882a593Smuzhiyun MODULE_ALIAS_IFE_META("skbmark");
74