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[NETFILTER]: Add helper functions for mass hook registration/unregistration

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Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2006-04-06 14:09:12 -07:00 committed by David S. Miller
parent 137dc0233f
commit 972d1cb142
2 changed files with 30 additions and 0 deletions
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2
include/linux/netfilter.h
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@ -110,6 +110,8 @@ struct nf_info
/* Function to register/unregister hook points. */
int nf_register_hook(struct nf_hook_ops *reg);
void nf_unregister_hook(struct nf_hook_ops *reg);
int nf_register_hooks(struct nf_hook_ops *reg, unsigned int n);
void nf_unregister_hooks(struct nf_hook_ops *reg, unsigned int n);
/* Functions to register get/setsockopt ranges (non-inclusive). You
need to check permissions yourself! */

28
net/netfilter/core.c
View File

@ -63,6 +63,34 @@ void nf_unregister_hook(struct nf_hook_ops *reg)
}
EXPORT_SYMBOL(nf_unregister_hook);
int nf_register_hooks(struct nf_hook_ops *reg, unsigned int n)
{
unsigned int i;
int err = 0;
for (i = 0; i < n; i++) {
err = nf_register_hook(&reg[i]);
if (err)
goto err;
}
return err;
err:
if (i > 0)
nf_unregister_hooks(reg, i);
return err;
}
EXPORT_SYMBOL(nf_register_hooks);
void nf_unregister_hooks(struct nf_hook_ops *reg, unsigned int n)
{
unsigned int i;
for (i = 0; i < n; i++)
nf_unregister_hook(&reg[i]);
}
EXPORT_SYMBOL(nf_unregister_hooks);
unsigned int nf_iterate(struct list_head *head,
struct sk_buff **skb,
int hook,