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net/sched/act_meta_skbprio.c
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/*
* net/sched/act_meta_prio.c IFE skb->priority 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 skbprio_check(struct sk_buff *skb, struct tcf_meta_info *e)
{
return ife_check_meta_u32(skb->priority, e);
}
static int skbprio_encode(struct sk_buff *skb, void *skbdata,
struct tcf_meta_info *e)
{
u32 ifeprio = skb->priority; /* avoid having to cast skb->priority*/
return ife_encode_meta_u32(ifeprio, skbdata, e);
}
static int skbprio_decode(struct sk_buff *skb, void *data, u16 len)
{
u32 ifeprio = *(u32 *)data;
skb->priority = ntohl(ifeprio);
return 0;
}
static struct tcf_meta_ops ife_prio_ops = {
.metaid = IFE_META_PRIO,
.metatype = NLA_U32,
.name = "skbprio",
.synopsis = "skb prio metadata",
.check_presence = skbprio_check,
.encode = skbprio_encode,
.decode = skbprio_decode,
.get = ife_get_meta_u32,
.alloc = ife_alloc_meta_u32,
.owner = THIS_MODULE,
};
static int __init ifeprio_init_module(void)
{
return register_ife_op(&ife_prio_ops);
}
static void __exit ifeprio_cleanup_module(void)
{
unregister_ife_op(&ife_prio_ops);
}
module_init(ifeprio_init_module);
module_exit(ifeprio_cleanup_module);
MODULE_AUTHOR("Jamal Hadi Salim(2015)");
MODULE_DESCRIPTION("Inter-FE skb prio metadata action");
MODULE_LICENSE("GPL");
MODULE_ALIAS_IFE_META(IFE_META_PRIO);
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