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netfilter: xtables: consolidate code into xt_request_find_match 

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
This commit is contained in:
Jan Engelhardt 2009-07-10 19:27:47 +02:00
parent d2a7b6bad2
commit fd0ec0e621
5 changed files with 30 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/linux/netfilter/x_tables.h
View File

@ -436,6 +436,8 @@ extern struct xt_table_info *xt_replace_table(struct xt_table *table,
extern struct xt_match *xt_find_match(u8 af, const char *name, u8 revision);
extern struct xt_target *xt_find_target(u8 af, const char *name, u8 revision);
extern struct xt_match *xt_request_find_match(u8 af, const char *name,
u8 revision);
extern struct xt_target *xt_request_find_target(u8 af, const char *name,
u8 revision);
extern int xt_find_revision(u8 af, const char *name, u8 revision,

5
net/bridge/netfilter/ebtables.c
View File

@ -361,12 +361,9 @@ ebt_check_match(struct ebt_entry_match *m, struct xt_mtchk_param *par,
left - sizeof(struct ebt_entry_match) < m->match_size)
return -EINVAL;
match = try_then_request_module(xt_find_match(NFPROTO_BRIDGE,
m->u.name, 0), "ebt_%s", m->u.name);
match = xt_request_find_match(NFPROTO_BRIDGE, m->u.name, 0);
if (IS_ERR(match))
return PTR_ERR(match);
if (match == NULL)
return -ENOENT;
m->u.match = match;
par->match = match;

18
net/ipv4/netfilter/ip_tables.c
View File

@ -629,12 +629,11 @@ find_check_match(struct ipt_entry_match *m, struct xt_mtchk_param *par)
struct xt_match *match;
int ret;
match = try_then_request_module(xt_find_match(AF_INET, m->u.user.name,
m->u.user.revision),
"ipt_%s", m->u.user.name);
if (IS_ERR(match) || !match) {
match = xt_request_find_match(NFPROTO_IPV4, m->u.user.name,
m->u.user.revision);
if (IS_ERR(match)) {
duprintf("find_check_match: `%s' not found\n", m->u.user.name);
return match ? PTR_ERR(match) : -ENOENT;
return PTR_ERR(match);
}
m->u.kernel.match = match;
@ -1472,13 +1471,12 @@ compat_find_calc_match(struct ipt_entry_match *m,
{
struct xt_match *match;
match = try_then_request_module(xt_find_match(AF_INET, m->u.user.name,
m->u.user.revision),
"ipt_%s", m->u.user.name);
if (IS_ERR(match) || !match) {
match = xt_request_find_match(NFPROTO_IPV4, m->u.user.name,
m->u.user.revision);
if (IS_ERR(match)) {
duprintf("compat_check_calc_match: `%s' not found\n",
m->u.user.name);
return match ? PTR_ERR(match) : -ENOENT;
return PTR_ERR(match);
}
m->u.kernel.match = match;
*size += xt_compat_match_offset(match);

18
net/ipv6/netfilter/ip6_tables.c
View File

@ -660,12 +660,11 @@ find_check_match(struct ip6t_entry_match *m, struct xt_mtchk_param *par)
struct xt_match *match;
int ret;
match = try_then_request_module(xt_find_match(AF_INET6, m->u.user.name,
m->u.user.revision),
"ip6t_%s", m->u.user.name);
if (IS_ERR(match) || !match) {
match = xt_request_find_match(NFPROTO_IPV6, m->u.user.name,
m->u.user.revision);
if (IS_ERR(match)) {
duprintf("find_check_match: `%s' not found\n", m->u.user.name);
return match ? PTR_ERR(match) : -ENOENT;
return PTR_ERR(match);
}
m->u.kernel.match = match;
@ -1506,13 +1505,12 @@ compat_find_calc_match(struct ip6t_entry_match *m,
{
struct xt_match *match;
match = try_then_request_module(xt_find_match(AF_INET6, m->u.user.name,
m->u.user.revision),
"ip6t_%s", m->u.user.name);
if (IS_ERR(match) || !match) {
match = xt_request_find_match(NFPROTO_IPV6, m->u.user.name,
m->u.user.revision);
if (IS_ERR(match)) {
duprintf("compat_check_calc_match: `%s' not found\n",
m->u.user.name);
return match ? PTR_ERR(match) : -ENOENT;
return PTR_ERR(match);
}
m->u.kernel.match = match;
*size += xt_compat_match_offset(match);

11
net/netfilter/x_tables.c
View File

@ -214,6 +214,17 @@ struct xt_match *xt_find_match(u8 af, const char *name, u8 revision)
}
EXPORT_SYMBOL(xt_find_match);
struct xt_match *
xt_request_find_match(uint8_t nfproto, const char *name, uint8_t revision)
{
struct xt_match *match;
match = try_then_request_module(xt_find_match(nfproto, name, revision),
"%st_%s", xt_prefix[nfproto], name);
return (match != NULL) ? match : ERR_PTR(-ENOENT);
}
EXPORT_SYMBOL_GPL(xt_request_find_match);
/* Find target, grabs ref. Returns ERR_PTR() on error. */
struct xt_target *xt_find_target(u8 af, const char *name, u8 revision)
{