diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /net/bridge/netfilter/ebtable_broute.c |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'net/bridge/netfilter/ebtable_broute.c')
-rw-r--r-- | net/bridge/netfilter/ebtable_broute.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/net/bridge/netfilter/ebtable_broute.c b/net/bridge/netfilter/ebtable_broute.c new file mode 100644 index 00000000000..1767c94cd3d --- /dev/null +++ b/net/bridge/netfilter/ebtable_broute.c @@ -0,0 +1,86 @@ +/* + * ebtable_broute + * + * Authors: + * Bart De Schuymer <bdschuym@pandora.be> + * + * April, 2002 + * + * This table lets you choose between routing and bridging for frames + * entering on a bridge enslaved nic. This table is traversed before any + * other ebtables table. See net/bridge/br_input.c. + */ + +#include <linux/netfilter_bridge/ebtables.h> +#include <linux/module.h> +#include <linux/if_bridge.h> + +/* EBT_ACCEPT means the frame will be bridged + * EBT_DROP means the frame will be routed + */ +static struct ebt_entries initial_chain = { + .name = "BROUTING", + .policy = EBT_ACCEPT, +}; + +static struct ebt_replace initial_table = +{ + .name = "broute", + .valid_hooks = 1 << NF_BR_BROUTING, + .entries_size = sizeof(struct ebt_entries), + .hook_entry = { + [NF_BR_BROUTING] = &initial_chain, + }, + .entries = (char *)&initial_chain, +}; + +static int check(const struct ebt_table_info *info, unsigned int valid_hooks) +{ + if (valid_hooks & ~(1 << NF_BR_BROUTING)) + return -EINVAL; + return 0; +} + +static struct ebt_table broute_table = +{ + .name = "broute", + .table = &initial_table, + .valid_hooks = 1 << NF_BR_BROUTING, + .lock = RW_LOCK_UNLOCKED, + .check = check, + .me = THIS_MODULE, +}; + +static int ebt_broute(struct sk_buff **pskb) +{ + int ret; + + ret = ebt_do_table(NF_BR_BROUTING, pskb, (*pskb)->dev, NULL, + &broute_table); + if (ret == NF_DROP) + return 1; /* route it */ + return 0; /* bridge it */ +} + +static int __init init(void) +{ + int ret; + + ret = ebt_register_table(&broute_table); + if (ret < 0) + return ret; + /* see br_input.c */ + br_should_route_hook = ebt_broute; + return ret; +} + +static void __exit fini(void) +{ + br_should_route_hook = NULL; + synchronize_net(); + ebt_unregister_table(&broute_table); +} + +module_init(init); +module_exit(fini); +MODULE_LICENSE("GPL"); |