diff options
author | Jan Engelhardt <jengelh@medozas.de> | 2009-06-17 22:14:54 +0200 |
---|---|---|
committer | Jan Engelhardt <jengelh@medozas.de> | 2010-02-10 17:50:47 +0100 |
commit | e3eaa9910b380530cfd2c0670fcd3f627674da8a (patch) | |
tree | 309e522e78f78149ec3cb99ffc386d1b72415a96 /net/ipv6/netfilter/ip6table_mangle.c | |
parent | 2b95efe7f6bb750256a702cc32d33b0cb2cd8223 (diff) |
netfilter: xtables: generate initial table on-demand
The static initial tables are pretty large, and after the net
namespace has been instantiated, they just hang around for nothing.
This commit removes them and creates tables on-demand at runtime when
needed.
Size shrinks by 7735 bytes (x86_64).
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Diffstat (limited to 'net/ipv6/netfilter/ip6table_mangle.c')
-rw-r--r-- | net/ipv6/netfilter/ip6table_mangle.c | 45 |
1 files changed, 7 insertions, 38 deletions
diff --git a/net/ipv6/netfilter/ip6table_mangle.c b/net/ipv6/netfilter/ip6table_mangle.c index 5023ac52ffec..dc803b7e8e54 100644 --- a/net/ipv6/netfilter/ip6table_mangle.c +++ b/net/ipv6/netfilter/ip6table_mangle.c @@ -21,42 +21,6 @@ MODULE_DESCRIPTION("ip6tables mangle table"); (1 << NF_INET_LOCAL_OUT) | \ (1 << NF_INET_POST_ROUTING)) -static const struct -{ - struct ip6t_replace repl; - struct ip6t_standard entries[5]; - struct ip6t_error term; -} initial_table __net_initdata = { - .repl = { - .name = "mangle", - .valid_hooks = MANGLE_VALID_HOOKS, - .num_entries = 6, - .size = sizeof(struct ip6t_standard) * 5 + sizeof(struct ip6t_error), - .hook_entry = { - [NF_INET_PRE_ROUTING] = 0, - [NF_INET_LOCAL_IN] = sizeof(struct ip6t_standard), - [NF_INET_FORWARD] = sizeof(struct ip6t_standard) * 2, - [NF_INET_LOCAL_OUT] = sizeof(struct ip6t_standard) * 3, - [NF_INET_POST_ROUTING] = sizeof(struct ip6t_standard) * 4, - }, - .underflow = { - [NF_INET_PRE_ROUTING] = 0, - [NF_INET_LOCAL_IN] = sizeof(struct ip6t_standard), - [NF_INET_FORWARD] = sizeof(struct ip6t_standard) * 2, - [NF_INET_LOCAL_OUT] = sizeof(struct ip6t_standard) * 3, - [NF_INET_POST_ROUTING] = sizeof(struct ip6t_standard) * 4, - }, - }, - .entries = { - IP6T_STANDARD_INIT(NF_ACCEPT), /* PRE_ROUTING */ - IP6T_STANDARD_INIT(NF_ACCEPT), /* LOCAL_IN */ - IP6T_STANDARD_INIT(NF_ACCEPT), /* FORWARD */ - IP6T_STANDARD_INIT(NF_ACCEPT), /* LOCAL_OUT */ - IP6T_STANDARD_INIT(NF_ACCEPT), /* POST_ROUTING */ - }, - .term = IP6T_ERROR_INIT, /* ERROR */ -}; - static const struct xt_table packet_mangler = { .name = "mangle", .valid_hooks = MANGLE_VALID_HOOKS, @@ -126,9 +90,14 @@ ip6table_mangle_hook(unsigned int hook, struct sk_buff *skb, static struct nf_hook_ops *mangle_ops __read_mostly; static int __net_init ip6table_mangle_net_init(struct net *net) { - /* Register table */ + struct ip6t_replace *repl; + + repl = ip6t_alloc_initial_table(&packet_mangler); + if (repl == NULL) + return -ENOMEM; net->ipv6.ip6table_mangle = - ip6t_register_table(net, &packet_mangler, &initial_table.repl); + ip6t_register_table(net, &packet_mangler, repl); + kfree(repl); if (IS_ERR(net->ipv6.ip6table_mangle)) return PTR_ERR(net->ipv6.ip6table_mangle); return 0; |