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authorPatrick McHardy <kaber@trash.net>2006-01-08 22:22:14 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2006-01-09 14:16:14 -0800
commit4bba3925924148c24fb0c7636a04ad69a6a56b84 (patch)
tree9f8af6ab6509dd1bf3dcb7232a4e6fdc8cbf8629 /net/sched/ipt.c
parent541673c859c0d71dedaaea1c148dfe3ccccc9422 (diff)
[PKT_SCHED]: Prefix tc actions with act_
Clean up the net/sched directory a bit by prefix all actions with act_. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/ipt.c')
-rw-r--r--net/sched/ipt.c328
1 files changed, 0 insertions, 328 deletions
diff --git a/net/sched/ipt.c b/net/sched/ipt.c
deleted file mode 100644
index b5001939b74..00000000000
--- a/net/sched/ipt.c
+++ /dev/null
@@ -1,328 +0,0 @@
-/*
- * net/sched/ipt.c iptables target interface
- *
- *TODO: Add other tables. For now we only support the ipv4 table targets
- *
- * 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 (2002-4)
- */
-
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <asm/bitops.h>
-#include <linux/config.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/socket.h>
-#include <linux/sockios.h>
-#include <linux/in.h>
-#include <linux/errno.h>
-#include <linux/interrupt.h>
-#include <linux/netdevice.h>
-#include <linux/skbuff.h>
-#include <linux/rtnetlink.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/proc_fs.h>
-#include <linux/kmod.h>
-#include <net/sock.h>
-#include <net/pkt_sched.h>
-#include <linux/tc_act/tc_ipt.h>
-#include <net/tc_act/tc_ipt.h>
-
-#include <linux/netfilter_ipv4/ip_tables.h>
-
-/* use generic hash table */
-#define MY_TAB_SIZE 16
-#define MY_TAB_MASK 15
-
-static u32 idx_gen;
-static struct tcf_ipt *tcf_ipt_ht[MY_TAB_SIZE];
-/* ipt hash table lock */
-static DEFINE_RWLOCK(ipt_lock);
-
-/* ovewrride the defaults */
-#define tcf_st tcf_ipt
-#define tcf_t_lock ipt_lock
-#define tcf_ht tcf_ipt_ht
-
-#define CONFIG_NET_ACT_INIT
-#include <net/pkt_act.h>
-
-static int
-ipt_init_target(struct ipt_entry_target *t, char *table, unsigned int hook)
-{
- struct ipt_target *target;
- int ret = 0;
-
- target = ipt_find_target(t->u.user.name, t->u.user.revision);
- if (!target)
- return -ENOENT;
-
- DPRINTK("ipt_init_target: found %s\n", target->name);
- t->u.kernel.target = target;
-
- if (t->u.kernel.target->checkentry
- && !t->u.kernel.target->checkentry(table, NULL, t->data,
- t->u.target_size - sizeof(*t),
- hook)) {
- DPRINTK("ipt_init_target: check failed for `%s'.\n",
- t->u.kernel.target->name);
- module_put(t->u.kernel.target->me);
- ret = -EINVAL;
- }
-
- return ret;
-}
-
-static void
-ipt_destroy_target(struct ipt_entry_target *t)
-{
- if (t->u.kernel.target->destroy)
- t->u.kernel.target->destroy(t->data,
- t->u.target_size - sizeof(*t));
- module_put(t->u.kernel.target->me);
-}
-
-static int
-tcf_ipt_release(struct tcf_ipt *p, int bind)
-{
- int ret = 0;
- if (p) {
- if (bind)
- p->bindcnt--;
- p->refcnt--;
- if (p->bindcnt <= 0 && p->refcnt <= 0) {
- ipt_destroy_target(p->t);
- kfree(p->tname);
- kfree(p->t);
- tcf_hash_destroy(p);
- ret = ACT_P_DELETED;
- }
- }
- return ret;
-}
-
-static int
-tcf_ipt_init(struct rtattr *rta, struct rtattr *est, struct tc_action *a,
- int ovr, int bind)
-{
- struct rtattr *tb[TCA_IPT_MAX];
- struct tcf_ipt *p;
- struct ipt_entry_target *td, *t;
- char *tname;
- int ret = 0, err;
- u32 hook = 0;
- u32 index = 0;
-
- if (rta == NULL || rtattr_parse_nested(tb, TCA_IPT_MAX, rta) < 0)
- return -EINVAL;
-
- if (tb[TCA_IPT_HOOK-1] == NULL ||
- RTA_PAYLOAD(tb[TCA_IPT_HOOK-1]) < sizeof(u32))
- return -EINVAL;
- if (tb[TCA_IPT_TARG-1] == NULL ||
- RTA_PAYLOAD(tb[TCA_IPT_TARG-1]) < sizeof(*t))
- return -EINVAL;
- td = (struct ipt_entry_target *)RTA_DATA(tb[TCA_IPT_TARG-1]);
- if (RTA_PAYLOAD(tb[TCA_IPT_TARG-1]) < td->u.target_size)
- return -EINVAL;
-
- if (tb[TCA_IPT_INDEX-1] != NULL &&
- RTA_PAYLOAD(tb[TCA_IPT_INDEX-1]) >= sizeof(u32))
- index = *(u32 *)RTA_DATA(tb[TCA_IPT_INDEX-1]);
-
- p = tcf_hash_check(index, a, ovr, bind);
- if (p == NULL) {
- p = tcf_hash_create(index, est, a, sizeof(*p), ovr, bind);
- if (p == NULL)
- return -ENOMEM;
- ret = ACT_P_CREATED;
- } else {
- if (!ovr) {
- tcf_ipt_release(p, bind);
- return -EEXIST;
- }
- }
-
- hook = *(u32 *)RTA_DATA(tb[TCA_IPT_HOOK-1]);
-
- err = -ENOMEM;
- tname = kmalloc(IFNAMSIZ, GFP_KERNEL);
- if (tname == NULL)
- goto err1;
- if (tb[TCA_IPT_TABLE - 1] == NULL ||
- rtattr_strlcpy(tname, tb[TCA_IPT_TABLE-1], IFNAMSIZ) >= IFNAMSIZ)
- strcpy(tname, "mangle");
-
- t = kmalloc(td->u.target_size, GFP_KERNEL);
- if (t == NULL)
- goto err2;
- memcpy(t, td, td->u.target_size);
-
- if ((err = ipt_init_target(t, tname, hook)) < 0)
- goto err3;
-
- spin_lock_bh(&p->lock);
- if (ret != ACT_P_CREATED) {
- ipt_destroy_target(p->t);
- kfree(p->tname);
- kfree(p->t);
- }
- p->tname = tname;
- p->t = t;
- p->hook = hook;
- spin_unlock_bh(&p->lock);
- if (ret == ACT_P_CREATED)
- tcf_hash_insert(p);
- return ret;
-
-err3:
- kfree(t);
-err2:
- kfree(tname);
-err1:
- kfree(p);
- return err;
-}
-
-static int
-tcf_ipt_cleanup(struct tc_action *a, int bind)
-{
- struct tcf_ipt *p = PRIV(a, ipt);
- return tcf_ipt_release(p, bind);
-}
-
-static int
-tcf_ipt(struct sk_buff *skb, struct tc_action *a, struct tcf_result *res)
-{
- int ret = 0, result = 0;
- struct tcf_ipt *p = PRIV(a, ipt);
-
- if (skb_cloned(skb)) {
- if (pskb_expand_head(skb, 0, 0, GFP_ATOMIC))
- return TC_ACT_UNSPEC;
- }
-
- spin_lock(&p->lock);
-
- p->tm.lastuse = jiffies;
- p->bstats.bytes += skb->len;
- p->bstats.packets++;
-
- /* yes, we have to worry about both in and out dev
- worry later - danger - this API seems to have changed
- from earlier kernels */
-
- /* iptables targets take a double skb pointer in case the skb
- * needs to be replaced. We don't own the skb, so this must not
- * happen. The pskb_expand_head above should make sure of this */
- ret = p->t->u.kernel.target->target(&skb, skb->dev, NULL,
- p->hook, p->t->data, NULL);
- switch (ret) {
- case NF_ACCEPT:
- result = TC_ACT_OK;
- break;
- case NF_DROP:
- result = TC_ACT_SHOT;
- p->qstats.drops++;
- break;
- case IPT_CONTINUE:
- result = TC_ACT_PIPE;
- break;
- default:
- if (net_ratelimit())
- printk("Bogus netfilter code %d assume ACCEPT\n", ret);
- result = TC_POLICE_OK;
- break;
- }
- spin_unlock(&p->lock);
- return result;
-
-}
-
-static int
-tcf_ipt_dump(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
-{
- struct ipt_entry_target *t;
- struct tcf_t tm;
- struct tc_cnt c;
- unsigned char *b = skb->tail;
- struct tcf_ipt *p = PRIV(a, ipt);
-
- /* for simple targets kernel size == user size
- ** user name = target name
- ** for foolproof you need to not assume this
- */
-
- t = kmalloc(p->t->u.user.target_size, GFP_ATOMIC);
- if (t == NULL)
- goto rtattr_failure;
-
- c.bindcnt = p->bindcnt - bind;
- c.refcnt = p->refcnt - ref;
- memcpy(t, p->t, p->t->u.user.target_size);
- strcpy(t->u.user.name, p->t->u.kernel.target->name);
-
- DPRINTK("\ttcf_ipt_dump tablename %s length %d\n", p->tname,
- strlen(p->tname));
- DPRINTK("\tdump target name %s size %d size user %d "
- "data[0] %x data[1] %x\n", p->t->u.kernel.target->name,
- p->t->u.target_size, p->t->u.user.target_size,
- p->t->data[0], p->t->data[1]);
- RTA_PUT(skb, TCA_IPT_TARG, p->t->u.user.target_size, t);
- RTA_PUT(skb, TCA_IPT_INDEX, 4, &p->index);
- RTA_PUT(skb, TCA_IPT_HOOK, 4, &p->hook);
- RTA_PUT(skb, TCA_IPT_CNT, sizeof(struct tc_cnt), &c);
- RTA_PUT(skb, TCA_IPT_TABLE, IFNAMSIZ, p->tname);
- tm.install = jiffies_to_clock_t(jiffies - p->tm.install);
- tm.lastuse = jiffies_to_clock_t(jiffies - p->tm.lastuse);
- tm.expires = jiffies_to_clock_t(p->tm.expires);
- RTA_PUT(skb, TCA_IPT_TM, sizeof (tm), &tm);
- kfree(t);
- return skb->len;
-
- rtattr_failure:
- skb_trim(skb, b - skb->data);
- kfree(t);
- return -1;
-}
-
-static struct tc_action_ops act_ipt_ops = {
- .kind = "ipt",
- .type = TCA_ACT_IPT,
- .capab = TCA_CAP_NONE,
- .owner = THIS_MODULE,
- .act = tcf_ipt,
- .dump = tcf_ipt_dump,
- .cleanup = tcf_ipt_cleanup,
- .lookup = tcf_hash_search,
- .init = tcf_ipt_init,
- .walk = tcf_generic_walker
-};
-
-MODULE_AUTHOR("Jamal Hadi Salim(2002-4)");
-MODULE_DESCRIPTION("Iptables target actions");
-MODULE_LICENSE("GPL");
-
-static int __init
-ipt_init_module(void)
-{
- return tcf_register_action(&act_ipt_ops);
-}
-
-static void __exit
-ipt_cleanup_module(void)
-{
- tcf_unregister_action(&act_ipt_ops);
-}
-
-module_init(ipt_init_module);
-module_exit(ipt_cleanup_module);
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