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/*
* net/sched/act_meta_mark.c IFE skb->mark metadata module
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* copyright Jamal Hadi Salim (2015)
*
*/
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/skbuff.h>
#include <linux/rtnetlink.h>
#include <linux/module.h>
#include <linux/init.h>
#include <net/netlink.h>
#include <net/pkt_sched.h>
#include <uapi/linux/tc_act/tc_ife.h>
#include <net/tc_act/tc_ife.h>
static int skbmark_encode(struct sk_buff *skb, void *skbdata,
struct tcf_meta_info *e)
{
u32 ifemark = skb->mark;
return ife_encode_meta_u32(ifemark, skbdata, e);
}
static int skbmark_decode(struct sk_buff *skb, void *data, u16 len)
{
u32 ifemark = *(u32 *)data;
skb->mark = ntohl(ifemark);
return 0;
}
static int skbmark_check(struct sk_buff *skb, struct tcf_meta_info *e)
{
return ife_check_meta_u32(skb->mark, e);
}
static struct tcf_meta_ops ife_skbmark_ops = {
.metaid = IFE_META_SKBMARK,
.metatype = NLA_U32,
.name = "skbmark",
.synopsis = "skb mark 32 bit metadata",
.check_presence = skbmark_check,
.encode = skbmark_encode,
.decode = skbmark_decode,
.get = ife_get_meta_u32,
.alloc = ife_alloc_meta_u32,
.release = ife_release_meta_gen,
.validate = ife_validate_meta_u32,
.owner = THIS_MODULE,
};
static int __init ifemark_init_module(void)
{
return register_ife_op(&ife_skbmark_ops);
}
static void __exit ifemark_cleanup_module(void)
{
unregister_ife_op(&ife_skbmark_ops);
}
module_init(ifemark_init_module);
module_exit(ifemark_cleanup_module);
MODULE_AUTHOR("Jamal Hadi Salim(2015)");
MODULE_DESCRIPTION("Inter-FE skb mark metadata module");
MODULE_LICENSE("GPL");
MODULE_ALIAS_IFE_META("skbmark");
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