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netfilter: xtables: use xt_table for hook instantiation

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The respective xt_table structures already have most of the metadata
needed for hook setup. Add a 'priority' field to struct xt_table so
that xt_hook_link() can be called with a reduced number of arguments.

So should we be having more tables in the future, it comes at no
static cost (only runtime, as before) - space saved:
6807373->6806555.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
This commit is contained in:
Jan Engelhardt
2009-06-17 13:57:48 +02:00
parent 2b21e05147
commit 2b95efe7f6
11 changed files with 121 additions and 250 deletions
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4
include/linux/netfilter/x_tables.h
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@@ -361,6 +361,7 @@ struct xt_table {
struct module *me;
u_int8_t af; /* address/protocol family */
int priority; /* hook order */
/* A unique name... */
const char name[XT_TABLE_MAXNAMELEN];
@@ -522,6 +523,9 @@ static inline unsigned long ifname_compare_aligned(const char *_a,
return ret;
}
extern struct nf_hook_ops *xt_hook_link(const struct xt_table *, nf_hookfn *);
extern void xt_hook_unlink(const struct xt_table *, struct nf_hook_ops *);
#ifdef CONFIG_COMPAT
#include <net/compat.h>