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| 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_raw.c | |
| parent | netfilter: xtables: use xt_table for hook instantiation (diff) | |
| download | linux-dev-e3eaa9910b380530cfd2c0670fcd3f627674da8a.tar.xz linux-dev-e3eaa9910b380530cfd2c0670fcd3f627674da8a.zip | |
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 '')
| -rw-r--r-- | net/ipv6/netfilter/ip6table_raw.c | 36 |
1 files changed, 7 insertions, 29 deletions
diff --git a/net/ipv6/netfilter/ip6table_raw.c b/net/ipv6/netfilter/ip6table_raw.c index 3bfa69511641..aef31a29de9e 100644 --- a/net/ipv6/netfilter/ip6table_raw.c +++ b/net/ipv6/netfilter/ip6table_raw.c @@ -8,33 +8,6 @@ #define RAW_VALID_HOOKS ((1 << NF_INET_PRE_ROUTING) | (1 << NF_INET_LOCAL_OUT)) -static const struct -{ - struct ip6t_replace repl; - struct ip6t_standard entries[2]; - struct ip6t_error term; -} initial_table __net_initdata = { - .repl = { - .name = "raw", - .valid_hooks = RAW_VALID_HOOKS, - .num_entries = 3, - .size = sizeof(struct ip6t_standard) * 2 + sizeof(struct ip6t_error), - .hook_entry = { - [NF_INET_PRE_ROUTING] = 0, - [NF_INET_LOCAL_OUT] = sizeof(struct ip6t_standard) - }, - .underflow = { - [NF_INET_PRE_ROUTING] = 0, - [NF_INET_LOCAL_OUT] = sizeof(struct ip6t_standard) - }, - }, - .entries = { - IP6T_STANDARD_INIT(NF_ACCEPT), /* PRE_ROUTING */ - IP6T_STANDARD_INIT(NF_ACCEPT), /* LOCAL_OUT */ - }, - .term = IP6T_ERROR_INIT, /* ERROR */ -}; - static const struct xt_table packet_raw = { .name = "raw", .valid_hooks = RAW_VALID_HOOKS, @@ -58,9 +31,14 @@ static struct nf_hook_ops *rawtable_ops __read_mostly; static int __net_init ip6table_raw_net_init(struct net *net) { - /* Register table */ + struct ip6t_replace *repl; + + repl = ip6t_alloc_initial_table(&packet_raw); + if (repl == NULL) + return -ENOMEM; net->ipv6.ip6table_raw = - ip6t_register_table(net, &packet_raw, &initial_table.repl); + ip6t_register_table(net, &packet_raw, repl); + kfree(repl); if (IS_ERR(net->ipv6.ip6table_raw)) return PTR_ERR(net->ipv6.ip6table_raw); return 0; |