Release 4.8 net/sched/act_simple.c

Directory: net/sched
/*
 * net/sched/act_simple.c       Simple example of an action
 *
 *              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.
 *
 * Authors:     Jamal Hadi Salim (2005-8)
 *
 */

#include <linux/module.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/skbuff.h>
#include <linux/rtnetlink.h>
#include <net/netlink.h>
#include <net/pkt_sched.h>


#define TCA_ACT_SIMP 22

#include <linux/tc_act/tc_defact.h>
#include <net/tc_act/tc_defact.h>


#define SIMP_TAB_MASK     7


static int simp_net_id;

static struct tc_action_ops act_simp_ops;


#define SIMP_MAX_DATA	32


static int tcf_simp(struct sk_buff *skb, const struct tc_action *a,
		    struct tcf_result *res)
{
	struct tcf_defact *d = to_defact(a);

	spin_lock(&d->tcf_lock);
	tcf_lastuse_update(&d->tcf_tm);
	bstats_update(&d->tcf_bstats, skb);

	/* print policy string followed by _ then packet count
         * Example if this was the 3rd packet and the string was "hello"
         * then it would look like "hello_3" (without quotes)
         */
	pr_info("simple: %s_%d\n",
	       (char *)d->tcfd_defdata, d->tcf_bstats.packets);
	spin_unlock(&d->tcf_lock);
	return d->tcf_action;
}

Contributors
Person Tokens Prop Commits CommitProp
jamal hadi salim jamal hadi salim 59 64.84% 2 18.18%
david s. miller david s. miller 15 16.48% 1 9.09%
patrick mchardy patrick mchardy 6 6.59% 2 18.18%
eric dumazet eric dumazet 6 6.59% 3 27.27%
americo wang americo wang 3 3.30% 1 9.09%
stephen hemminger stephen hemminger 1 1.10% 1 9.09%
jussi kivilinna jussi kivilinna 1 1.10% 1 9.09%
Total 91 100.00% 11 100.00%



static void tcf_simp_release(struct tc_action *a, int bind)
{
	struct tcf_defact *d = to_defact(a);
	kfree(d->tcfd_defdata);
}

Contributors
Person Tokens Prop Commits CommitProp
david s. miller david s. miller 16 51.61% 1 25.00%
americo wang americo wang 13 41.94% 2 50.00%
jamal hadi salim jamal hadi salim 2 6.45% 1 25.00%
Total 31 100.00% 4 100.00%



static int alloc_defdata(struct tcf_defact *d, char *defdata)
{
	d->tcfd_defdata = kzalloc(SIMP_MAX_DATA, GFP_KERNEL);
	if (unlikely(!d->tcfd_defdata))
		return -ENOMEM;
	strlcpy(d->tcfd_defdata, defdata, SIMP_MAX_DATA);
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
david s. miller david s. miller 39 72.22% 1 25.00%
dan carpenter dan carpenter 12 22.22% 1 25.00%
jamal hadi salim jamal hadi salim 3 5.56% 2 50.00%
Total 54 100.00% 4 100.00%



static void reset_policy(struct tcf_defact *d, char *defdata,
			 struct tc_defact *p)
{
	spin_lock_bh(&d->tcf_lock);
	d->tcf_action = p->action;
	memset(d->tcfd_defdata, 0, SIMP_MAX_DATA);
	strlcpy(d->tcfd_defdata, defdata, SIMP_MAX_DATA);
	spin_unlock_bh(&d->tcf_lock);
}

Contributors
Person Tokens Prop Commits CommitProp
jamal hadi salim jamal hadi salim 44 66.67% 3 75.00%
david s. miller david s. miller 22 33.33% 1 25.00%
Total 66 100.00% 4 100.00%


static const struct nla_policy simple_policy[TCA_DEF_MAX + 1] = {
	[TCA_DEF_PARMS]	= { .len = sizeof(struct tc_defact) },
	[TCA_DEF_DATA]	= { .type = NLA_STRING, .len = SIMP_MAX_DATA },
};



static int tcf_simp_init(struct net *net, struct nlattr *nla,
			 struct nlattr *est, struct tc_action **a,
			 int ovr, int bind)
{
	struct tc_action_net *tn = net_generic(net, simp_net_id);
	struct nlattr *tb[TCA_DEF_MAX + 1];
	struct tc_defact *parm;
	struct tcf_defact *d;
	bool exists = false;
	int ret = 0, err;
	char *defdata;

	if (nla == NULL)
		return -EINVAL;

	err = nla_parse_nested(tb, TCA_DEF_MAX, nla, simple_policy);
	if (err < 0)
		return err;

	if (tb[TCA_DEF_PARMS] == NULL)
		return -EINVAL;

	parm = nla_data(tb[TCA_DEF_PARMS]);
	exists = tcf_hash_check(tn, parm->index, a, bind);
	if (exists && bind)
		return 0;

	if (tb[TCA_DEF_DATA] == NULL) {
		if (exists)
			tcf_hash_release(*a, bind);
		return -EINVAL;
	}

	defdata = nla_data(tb[TCA_DEF_DATA]);

	if (!exists) {
		ret = tcf_hash_create(tn, parm->index, est, a,
				      &act_simp_ops, bind, false);
		if (ret)
			return ret;

		d = to_defact(*a);
		ret = alloc_defdata(d, defdata);
		if (ret < 0) {
			tcf_hash_cleanup(*a, est);
			return ret;
		}
		d->tcf_action = parm->action;
		ret = ACT_P_CREATED;
	} else {
		d = to_defact(*a);

		tcf_hash_release(*a, bind);
		if (!ovr)
			return -EEXIST;

		reset_policy(d, defdata, parm);
	}

	if (ret == ACT_P_CREATED)
		tcf_hash_insert(tn, *a);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
david s. miller david s. miller 179 53.43% 1 6.25%
jamal hadi salim jamal hadi salim 76 22.69% 4 25.00%
americo wang americo wang 47 14.03% 6 37.50%
patrick mchardy patrick mchardy 24 7.16% 2 12.50%
benjamin lahaise benjamin lahaise 5 1.49% 1 6.25%
hiroaki shimoda hiroaki shimoda 2 0.60% 1 6.25%
eric dumazet eric dumazet 2 0.60% 1 6.25%
Total 335 100.00% 16 100.00%



static int tcf_simp_dump(struct sk_buff *skb, struct tc_action *a,
			 int bind, int ref)
{
	unsigned char *b = skb_tail_pointer(skb);
	struct tcf_defact *d = to_defact(a);
	struct tc_defact opt = {
		.index   = d->tcf_index,
		.refcnt  = d->tcf_refcnt - ref,
		.bindcnt = d->tcf_bindcnt - bind,
		.action  = d->tcf_action,
        };
	struct tcf_t t;

	if (nla_put(skb, TCA_DEF_PARMS, sizeof(opt), &opt) ||
	    nla_put_string(skb, TCA_DEF_DATA, d->tcfd_defdata))
		goto nla_put_failure;

	tcf_tm_dump(&t, &d->tcf_tm);
	if (nla_put_64bit(skb, TCA_DEF_TM, sizeof(t), &t, TCA_DEF_PAD))
		goto nla_put_failure;
	return skb->len;

nla_put_failure:
	nlmsg_trim(skb, b);
	return -1;
}

Contributors
Person Tokens Prop Commits CommitProp
david s. miller david s. miller 139 83.73% 2 20.00%
eric dumazet eric dumazet 11 6.63% 1 10.00%
jamal hadi salim jamal hadi salim 5 3.01% 2 20.00%
arnaldo carvalho de melo arnaldo carvalho de melo 4 2.41% 2 20.00%
americo wang americo wang 3 1.81% 1 10.00%
nicolas dichtel nicolas dichtel 3 1.81% 1 10.00%
patrick mchardy patrick mchardy 1 0.60% 1 10.00%
Total 166 100.00% 10 100.00%



static int tcf_simp_walker(struct net *net, struct sk_buff *skb,
			   struct netlink_callback *cb, int type,
			   const struct tc_action_ops *ops)
{
	struct tc_action_net *tn = net_generic(net, simp_net_id);

	return tcf_generic_walker(tn, skb, cb, type, ops);
}

Contributors
Person Tokens Prop Commits CommitProp
americo wang americo wang 56 100.00% 2 100.00%
Total 56 100.00% 2 100.00%



static int tcf_simp_search(struct net *net, struct tc_action **a, u32 index)
{
	struct tc_action_net *tn = net_generic(net, simp_net_id);

	return tcf_hash_search(tn, a, index);
}

Contributors
Person Tokens Prop Commits CommitProp
americo wang americo wang 42 100.00% 2 100.00%
Total 42 100.00% 2 100.00%


static struct tc_action_ops act_simp_ops = {
	.kind		=	"simple",
	.type		=	TCA_ACT_SIMP,
	.owner		=	THIS_MODULE,
	.act		=	tcf_simp,
	.dump		=	tcf_simp_dump,
	.cleanup	=	tcf_simp_release,
	.init		=	tcf_simp_init,
	.walk		=	tcf_simp_walker,
	.lookup		=	tcf_simp_search,
	.size		=	sizeof(struct tcf_defact),
};



static __net_init int simp_init_net(struct net *net)
{
	struct tc_action_net *tn = net_generic(net, simp_net_id);

	return tc_action_net_init(tn, &act_simp_ops, SIMP_TAB_MASK);
}

Contributors
Person Tokens Prop Commits CommitProp
americo wang americo wang 35 100.00% 1 100.00%
Total 35 100.00% 1 100.00%



static void __net_exit simp_exit_net(struct net *net)
{
	struct tc_action_net *tn = net_generic(net, simp_net_id);

	tc_action_net_exit(tn);
}

Contributors
Person Tokens Prop Commits CommitProp
americo wang americo wang 29 100.00% 1 100.00%
Total 29 100.00% 1 100.00%


static struct pernet_operations simp_net_ops = {
	.init = simp_init_net,
	.exit = simp_exit_net,
	.id   = &simp_net_id,
	.size = sizeof(struct tc_action_net),
};

MODULE_AUTHOR("Jamal Hadi Salim(2005)");
MODULE_DESCRIPTION("Simple example action");
MODULE_LICENSE("GPL");



static int __init simp_init_module(void)
{
	int ret = tcf_register_action(&act_simp_ops, &simp_net_ops);
	if (!ret)
		pr_info("Simple TC action Loaded\n");
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
jamal hadi salim jamal hadi salim 28 82.35% 1 25.00%
americo wang americo wang 5 14.71% 2 50.00%
stephen hemminger stephen hemminger 1 2.94% 1 25.00%
Total 34 100.00% 4 100.00%



static void __exit simp_cleanup_module(void)
{
	tcf_unregister_action(&act_simp_ops, &simp_net_ops);
}

Contributors
Person Tokens Prop Commits CommitProp
jamal hadi salim jamal hadi salim 15 83.33% 1 50.00%
americo wang americo wang 3 16.67% 1 50.00%
Total 18 100.00% 2 100.00%


module_init(simp_init_module);

module_exit(simp_cleanup_module);
Overall Contributors
Person Tokens Prop Commits CommitProp
david s. miller david s. miller 455 38.86% 3 7.89%
jamal hadi salim jamal hadi salim 305 26.05% 8 21.05%
americo wang americo wang 297 25.36% 7 18.42%
patrick mchardy patrick mchardy 59 5.04% 5 13.16%
eric dumazet eric dumazet 19 1.62% 5 13.16%
dan carpenter dan carpenter 12 1.02% 1 2.63%
arnaldo carvalho de melo arnaldo carvalho de melo 7 0.60% 2 5.26%
benjamin lahaise benjamin lahaise 5 0.43% 1 2.63%
tejun heo tejun heo 3 0.26% 1 2.63%
nicolas dichtel nicolas dichtel 3 0.26% 1 2.63%
hiroaki shimoda hiroaki shimoda 2 0.17% 1 2.63%
stephen hemminger stephen hemminger 2 0.17% 1 2.63%
jiri pirko jiri pirko 1 0.09% 1 2.63%
jussi kivilinna jussi kivilinna 1 0.09% 1 2.63%
Total 1171 100.00% 38 100.00%
  Directory: net/sched

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
	Person	Tokens	Prop	Commits	CommitProp
jamal hadi salim	jamal hadi salim	59	64.84%	2	18.18%
david s. miller	david s. miller	15	16.48%	1	9.09%
patrick mchardy	patrick mchardy	6	6.59%	2	18.18%
eric dumazet	eric dumazet	6	6.59%	3	27.27%
americo wang	americo wang	3	3.30%	1	9.09%
stephen hemminger	stephen hemminger	1	1.10%	1	9.09%
jussi kivilinna	jussi kivilinna	1	1.10%	1	9.09%
	Total	91	100.00%	11	100.00%
cregit-Linux how code gets into the kernel

Release 4.8 net/sched/act_simple.c

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Overall Contributors
