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authorJan Engelhardt <jengelh@medozas.de>2009-07-04 12:50:00 +0200
committerJan Engelhardt <jengelh@medozas.de>2010-05-11 18:36:18 +0200
commit4538506be386f9736b83bf9892f829adbbb70fea (patch)
tree3e3be09f45b3af19edc1143f2eb44ad1751ecfa7
parentb4ba26119b06052888696491f614201817491a0d (diff)
downloadlinux-2.6.34-ux500-4538506be386f9736b83bf9892f829adbbb70fea.tar.gz
netfilter: xtables: combine built-in extension structs
Prepare the arrays for use with the multiregister function. The future layer-3 xt matches can then be easily added to it without needing more (un)register code. Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
-rw-r--r--net/ipv4/netfilter/arp_tables.c41
-rw-r--r--net/ipv4/netfilter/ip_tables.c65
-rw-r--r--net/ipv6/netfilter/ip6_tables.c64
3 files changed, 78 insertions, 92 deletions
diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
index 8cc56d26e93..03352fcba17 100644
--- a/net/ipv4/netfilter/arp_tables.c
+++ b/net/ipv4/netfilter/arp_tables.c
@@ -1828,22 +1828,23 @@ void arpt_unregister_table(struct xt_table *table)
}
/* The built-in targets: standard (NULL) and error. */
-static struct xt_target arpt_standard_target __read_mostly = {
- .name = ARPT_STANDARD_TARGET,
- .targetsize = sizeof(int),
- .family = NFPROTO_ARP,
+static struct xt_target arpt_builtin_tg[] __read_mostly = {
+ {
+ .name = ARPT_STANDARD_TARGET,
+ .targetsize = sizeof(int),
+ .family = NFPROTO_ARP,
#ifdef CONFIG_COMPAT
- .compatsize = sizeof(compat_int_t),
- .compat_from_user = compat_standard_from_user,
- .compat_to_user = compat_standard_to_user,
+ .compatsize = sizeof(compat_int_t),
+ .compat_from_user = compat_standard_from_user,
+ .compat_to_user = compat_standard_to_user,
#endif
-};
-
-static struct xt_target arpt_error_target __read_mostly = {
- .name = ARPT_ERROR_TARGET,
- .target = arpt_error,
- .targetsize = ARPT_FUNCTION_MAXNAMELEN,
- .family = NFPROTO_ARP,
+ },
+ {
+ .name = ARPT_ERROR_TARGET,
+ .target = arpt_error,
+ .targetsize = ARPT_FUNCTION_MAXNAMELEN,
+ .family = NFPROTO_ARP,
+ },
};
static struct nf_sockopt_ops arpt_sockopts = {
@@ -1887,12 +1888,9 @@ static int __init arp_tables_init(void)
goto err1;
/* Noone else will be downing sem now, so we won't sleep */
- ret = xt_register_target(&arpt_standard_target);
+ ret = xt_register_targets(arpt_builtin_tg, ARRAY_SIZE(arpt_builtin_tg));
if (ret < 0)
goto err2;
- ret = xt_register_target(&arpt_error_target);
- if (ret < 0)
- goto err3;
/* Register setsockopt */
ret = nf_register_sockopt(&arpt_sockopts);
@@ -1903,9 +1901,7 @@ static int __init arp_tables_init(void)
return 0;
err4:
- xt_unregister_target(&arpt_error_target);
-err3:
- xt_unregister_target(&arpt_standard_target);
+ xt_unregister_targets(arpt_builtin_tg, ARRAY_SIZE(arpt_builtin_tg));
err2:
unregister_pernet_subsys(&arp_tables_net_ops);
err1:
@@ -1915,8 +1911,7 @@ err1:
static void __exit arp_tables_fini(void)
{
nf_unregister_sockopt(&arpt_sockopts);
- xt_unregister_target(&arpt_error_target);
- xt_unregister_target(&arpt_standard_target);
+ xt_unregister_targets(arpt_builtin_tg, ARRAY_SIZE(arpt_builtin_tg));
unregister_pernet_subsys(&arp_tables_net_ops);
}
diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index 607f89f16b7..49b9e4fb546 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -2172,23 +2172,23 @@ static int icmp_checkentry(const struct xt_mtchk_param *par)
return (icmpinfo->invflags & ~IPT_ICMP_INV) ? -EINVAL : 0;
}
-/* The built-in targets: standard (NULL) and error. */
-static struct xt_target ipt_standard_target __read_mostly = {
- .name = IPT_STANDARD_TARGET,
- .targetsize = sizeof(int),
- .family = NFPROTO_IPV4,
+static struct xt_target ipt_builtin_tg[] __read_mostly = {
+ {
+ .name = IPT_STANDARD_TARGET,
+ .targetsize = sizeof(int),
+ .family = NFPROTO_IPV4,
#ifdef CONFIG_COMPAT
- .compatsize = sizeof(compat_int_t),
- .compat_from_user = compat_standard_from_user,
- .compat_to_user = compat_standard_to_user,
+ .compatsize = sizeof(compat_int_t),
+ .compat_from_user = compat_standard_from_user,
+ .compat_to_user = compat_standard_to_user,
#endif
-};
-
-static struct xt_target ipt_error_target __read_mostly = {
- .name = IPT_ERROR_TARGET,
- .target = ipt_error,
- .targetsize = IPT_FUNCTION_MAXNAMELEN,
- .family = NFPROTO_IPV4,
+ },
+ {
+ .name = IPT_ERROR_TARGET,
+ .target = ipt_error,
+ .targetsize = IPT_FUNCTION_MAXNAMELEN,
+ .family = NFPROTO_IPV4,
+ },
};
static struct nf_sockopt_ops ipt_sockopts = {
@@ -2208,13 +2208,15 @@ static struct nf_sockopt_ops ipt_sockopts = {
.owner = THIS_MODULE,
};
-static struct xt_match icmp_matchstruct __read_mostly = {
- .name = "icmp",
- .match = icmp_match,
- .matchsize = sizeof(struct ipt_icmp),
- .checkentry = icmp_checkentry,
- .proto = IPPROTO_ICMP,
- .family = NFPROTO_IPV4,
+static struct xt_match ipt_builtin_mt[] __read_mostly = {
+ {
+ .name = "icmp",
+ .match = icmp_match,
+ .matchsize = sizeof(struct ipt_icmp),
+ .checkentry = icmp_checkentry,
+ .proto = IPPROTO_ICMP,
+ .family = NFPROTO_IPV4,
+ },
};
static int __net_init ip_tables_net_init(struct net *net)
@@ -2241,13 +2243,10 @@ static int __init ip_tables_init(void)
goto err1;
/* Noone else will be downing sem now, so we won't sleep */
- ret = xt_register_target(&ipt_standard_target);
+ ret = xt_register_targets(ipt_builtin_tg, ARRAY_SIZE(ipt_builtin_tg));
if (ret < 0)
goto err2;
- ret = xt_register_target(&ipt_error_target);
- if (ret < 0)
- goto err3;
- ret = xt_register_match(&icmp_matchstruct);
+ ret = xt_register_matches(ipt_builtin_mt, ARRAY_SIZE(ipt_builtin_mt));
if (ret < 0)
goto err4;
@@ -2260,11 +2259,9 @@ static int __init ip_tables_init(void)
return 0;
err5:
- xt_unregister_match(&icmp_matchstruct);
+ xt_unregister_matches(ipt_builtin_mt, ARRAY_SIZE(ipt_builtin_mt));
err4:
- xt_unregister_target(&ipt_error_target);
-err3:
- xt_unregister_target(&ipt_standard_target);
+ xt_unregister_targets(ipt_builtin_tg, ARRAY_SIZE(ipt_builtin_tg));
err2:
unregister_pernet_subsys(&ip_tables_net_ops);
err1:
@@ -2275,10 +2272,8 @@ static void __exit ip_tables_fini(void)
{
nf_unregister_sockopt(&ipt_sockopts);
- xt_unregister_match(&icmp_matchstruct);
- xt_unregister_target(&ipt_error_target);
- xt_unregister_target(&ipt_standard_target);
-
+ xt_unregister_matches(ipt_builtin_mt, ARRAY_SIZE(ipt_builtin_mt));
+ xt_unregister_targets(ipt_builtin_tg, ARRAY_SIZE(ipt_builtin_tg));
unregister_pernet_subsys(&ip_tables_net_ops);
}
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index 557fac9689c..56782336474 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -2190,22 +2190,23 @@ static int icmp6_checkentry(const struct xt_mtchk_param *par)
}
/* The built-in targets: standard (NULL) and error. */
-static struct xt_target ip6t_standard_target __read_mostly = {
- .name = IP6T_STANDARD_TARGET,
- .targetsize = sizeof(int),
- .family = NFPROTO_IPV6,
+static struct xt_target ip6t_builtin_tg[] __read_mostly = {
+ {
+ .name = IP6T_STANDARD_TARGET,
+ .targetsize = sizeof(int),
+ .family = NFPROTO_IPV6,
#ifdef CONFIG_COMPAT
- .compatsize = sizeof(compat_int_t),
- .compat_from_user = compat_standard_from_user,
- .compat_to_user = compat_standard_to_user,
+ .compatsize = sizeof(compat_int_t),
+ .compat_from_user = compat_standard_from_user,
+ .compat_to_user = compat_standard_to_user,
#endif
-};
-
-static struct xt_target ip6t_error_target __read_mostly = {
- .name = IP6T_ERROR_TARGET,
- .target = ip6t_error,
- .targetsize = IP6T_FUNCTION_MAXNAMELEN,
- .family = NFPROTO_IPV6,
+ },
+ {
+ .name = IP6T_ERROR_TARGET,
+ .target = ip6t_error,
+ .targetsize = IP6T_FUNCTION_MAXNAMELEN,
+ .family = NFPROTO_IPV6,
+ },
};
static struct nf_sockopt_ops ip6t_sockopts = {
@@ -2225,13 +2226,15 @@ static struct nf_sockopt_ops ip6t_sockopts = {
.owner = THIS_MODULE,
};
-static struct xt_match icmp6_matchstruct __read_mostly = {
- .name = "icmp6",
- .match = icmp6_match,
- .matchsize = sizeof(struct ip6t_icmp),
- .checkentry = icmp6_checkentry,
- .proto = IPPROTO_ICMPV6,
- .family = NFPROTO_IPV6,
+static struct xt_match ip6t_builtin_mt[] __read_mostly = {
+ {
+ .name = "icmp6",
+ .match = icmp6_match,
+ .matchsize = sizeof(struct ip6t_icmp),
+ .checkentry = icmp6_checkentry,
+ .proto = IPPROTO_ICMPV6,
+ .family = NFPROTO_IPV6,
+ },
};
static int __net_init ip6_tables_net_init(struct net *net)
@@ -2258,13 +2261,10 @@ static int __init ip6_tables_init(void)
goto err1;
/* Noone else will be downing sem now, so we won't sleep */
- ret = xt_register_target(&ip6t_standard_target);
+ ret = xt_register_targets(ip6t_builtin_tg, ARRAY_SIZE(ip6t_builtin_tg));
if (ret < 0)
goto err2;
- ret = xt_register_target(&ip6t_error_target);
- if (ret < 0)
- goto err3;
- ret = xt_register_match(&icmp6_matchstruct);
+ ret = xt_register_matches(ip6t_builtin_mt, ARRAY_SIZE(ip6t_builtin_mt));
if (ret < 0)
goto err4;
@@ -2277,11 +2277,9 @@ static int __init ip6_tables_init(void)
return 0;
err5:
- xt_unregister_match(&icmp6_matchstruct);
+ xt_unregister_matches(ip6t_builtin_mt, ARRAY_SIZE(ip6t_builtin_mt));
err4:
- xt_unregister_target(&ip6t_error_target);
-err3:
- xt_unregister_target(&ip6t_standard_target);
+ xt_unregister_targets(ip6t_builtin_tg, ARRAY_SIZE(ip6t_builtin_tg));
err2:
unregister_pernet_subsys(&ip6_tables_net_ops);
err1:
@@ -2292,10 +2290,8 @@ static void __exit ip6_tables_fini(void)
{
nf_unregister_sockopt(&ip6t_sockopts);
- xt_unregister_match(&icmp6_matchstruct);
- xt_unregister_target(&ip6t_error_target);
- xt_unregister_target(&ip6t_standard_target);
-
+ xt_unregister_matches(ip6t_builtin_mt, ARRAY_SIZE(ip6t_builtin_mt));
+ xt_unregister_targets(ip6t_builtin_tg, ARRAY_SIZE(ip6t_builtin_tg));
unregister_pernet_subsys(&ip6_tables_net_ops);
}