92 строки
2.2 KiB
C
92 строки
2.2 KiB
C
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/*
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* net/sched/simp.c Simple example of an action
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Authors: Jamal Hadi Salim (2005)
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*
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/netdevice.h>
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#include <linux/skbuff.h>
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#include <linux/rtnetlink.h>
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#include <net/pkt_sched.h>
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#define TCA_ACT_SIMP 22
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/* XXX: Hide all these common elements under some macro
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* probably
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*/
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#include <linux/tc_act/tc_defact.h>
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#include <net/tc_act/tc_defact.h>
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/* use generic hash table with 8 buckets */
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#define MY_TAB_SIZE 8
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#define MY_TAB_MASK (MY_TAB_SIZE - 1)
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static u32 idx_gen;
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static struct tcf_defact *tcf_simp_ht[MY_TAB_SIZE];
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static DEFINE_RWLOCK(simp_lock);
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/* override the defaults */
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#define tcf_st tcf_defact
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#define tc_st tc_defact
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#define tcf_t_lock simp_lock
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#define tcf_ht tcf_simp_ht
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#define CONFIG_NET_ACT_INIT 1
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#include <net/pkt_act.h>
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#include <net/act_generic.h>
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static int tcf_simp(struct sk_buff *skb, struct tc_action *a, struct tcf_result *res)
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{
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struct tcf_defact *p = PRIV(a, defact);
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spin_lock(&p->lock);
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p->tm.lastuse = jiffies;
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p->bstats.bytes += skb->len;
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p->bstats.packets++;
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/* print policy string followed by _ then packet count
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* Example if this was the 3rd packet and the string was "hello"
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* then it would look like "hello_3" (without quotes)
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**/
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printk("simple: %s_%d\n", (char *)p->defdata, p->bstats.packets);
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spin_unlock(&p->lock);
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return p->action;
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}
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static struct tc_action_ops act_simp_ops = {
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.kind = "simple",
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.type = TCA_ACT_SIMP,
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.capab = TCA_CAP_NONE,
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.owner = THIS_MODULE,
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.act = tcf_simp,
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tca_use_default_ops
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};
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MODULE_AUTHOR("Jamal Hadi Salim(2005)");
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MODULE_DESCRIPTION("Simple example action");
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MODULE_LICENSE("GPL");
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static int __init simp_init_module(void)
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{
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int ret = tcf_register_action(&act_simp_ops);
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if (!ret)
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printk("Simple TC action Loaded\n");
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return ret;
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}
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static void __exit simp_cleanup_module(void)
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{
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tcf_unregister_action(&act_simp_ops);
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}
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module_init(simp_init_module);
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module_exit(simp_cleanup_module);
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