Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 219 insertions, 0 deletions

diff --git a/net/sched/act_simple.c b/net/sched/act_simple.c
new file mode 100644
index 00000000..73e0a3ab
--- /dev/null
+++ b/net/sched/act_simple.c
@@ -0,0 +1,219 @@
+/*
+ * net/sched/simp.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 struct tcf_common *tcf_simp_ht[SIMP_TAB_MASK + 1];
+static u32 simp_idx_gen;
+static DEFINE_RWLOCK(simp_lock);
+
+static struct tcf_hashinfo simp_hash_info = {
+	.htab	=	tcf_simp_ht,
+	.hmask	=	SIMP_TAB_MASK,
+	.lock	=	&simp_lock,
+};
+
+#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 = a->priv;
+
+	spin_lock(&d->tcf_lock);
+	d->tcf_tm.lastuse = jiffies;
+	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;
+}
+
+static int tcf_simp_release(struct tcf_defact *d, int bind)
+{
+	int ret = 0;
+	if (d) {
+		if (bind)
+			d->tcf_bindcnt--;
+		d->tcf_refcnt--;
+		if (d->tcf_bindcnt <= 0 && d->tcf_refcnt <= 0) {
+			kfree(d->tcfd_defdata);
+			tcf_hash_destroy(&d->common, &simp_hash_info);
+			ret = 1;
+		}
+	}
+	return ret;
+}
+
+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;
+}
+
+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);
+}
+
+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 nlattr *nla, struct nlattr *est,
+			 struct tc_action *a, int ovr, int bind)
+{
+	struct nlattr *tb[TCA_DEF_MAX + 1];
+	struct tc_defact *parm;
+	struct tcf_defact *d;
+	struct tcf_common *pc;
+	char *defdata;
+	int ret = 0, err;
+
+	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;
+
+	if (tb[TCA_DEF_DATA] == NULL)
+		return -EINVAL;
+
+	parm = nla_data(tb[TCA_DEF_PARMS]);
+	defdata = nla_data(tb[TCA_DEF_DATA]);
+
+	pc = tcf_hash_check(parm->index, a, bind, &simp_hash_info);
+	if (!pc) {
+		pc = tcf_hash_create(parm->index, est, a, sizeof(*d), bind,
+				     &simp_idx_gen, &simp_hash_info);
+		if (IS_ERR(pc))
+			return PTR_ERR(pc);
+
+		d = to_defact(pc);
+		ret = alloc_defdata(d, defdata);
+		if (ret < 0) {
+			kfree(pc);
+			return ret;
+		}
+		d->tcf_action = parm->action;
+		ret = ACT_P_CREATED;
+	} else {
+		d = to_defact(pc);
+		if (!ovr) {
+			tcf_simp_release(d, bind);
+			return -EEXIST;
+		}
+		reset_policy(d, defdata, parm);
+	}
+
+	if (ret == ACT_P_CREATED)
+		tcf_hash_insert(pc, &simp_hash_info);
+	return ret;
+}
+
+static int tcf_simp_cleanup(struct tc_action *a, int bind)
+{
+	struct tcf_defact *d = a->priv;
+
+	if (d)
+		return tcf_simp_release(d, bind);
+	return 0;
+}
+
+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 = a->priv;
+	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;
+
+	NLA_PUT(skb, TCA_DEF_PARMS, sizeof(opt), &opt);
+	NLA_PUT_STRING(skb, TCA_DEF_DATA, d->tcfd_defdata);
+	t.install = jiffies_to_clock_t(jiffies - d->tcf_tm.install);
+	t.lastuse = jiffies_to_clock_t(jiffies - d->tcf_tm.lastuse);
+	t.expires = jiffies_to_clock_t(d->tcf_tm.expires);
+	NLA_PUT(skb, TCA_DEF_TM, sizeof(t), &t);
+	return skb->len;
+
+nla_put_failure:
+	nlmsg_trim(skb, b);
+	return -1;
+}
+
+static struct tc_action_ops act_simp_ops = {
+	.kind		=	"simple",
+	.hinfo		=	&simp_hash_info,
+	.type		=	TCA_ACT_SIMP,
+	.capab		=	TCA_CAP_NONE,
+	.owner		=	THIS_MODULE,
+	.act		=	tcf_simp,
+	.dump		=	tcf_simp_dump,
+	.cleanup	=	tcf_simp_cleanup,
+	.init		=	tcf_simp_init,
+	.walk		=	tcf_generic_walker,
+};
+
+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);
+	if (!ret)
+		pr_info("Simple TC action Loaded\n");
+	return ret;
+}
+
+static void __exit simp_cleanup_module(void)
+{
+	tcf_unregister_action(&act_simp_ops);
+}
+
+module_init(simp_init_module);
+module_exit(simp_cleanup_module);