Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * net/sched/act_meta_prio.c IFE skb->priority metadata module
 *
 * 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("skbprio");