diff options
author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
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committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/net/bridge/netfilter/ebt_redirect.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/net/bridge/netfilter/ebt_redirect.c')
-rw-r--r-- | kernel/net/bridge/netfilter/ebt_redirect.c | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/kernel/net/bridge/netfilter/ebt_redirect.c b/kernel/net/bridge/netfilter/ebt_redirect.c new file mode 100644 index 000000000..203964997 --- /dev/null +++ b/kernel/net/bridge/netfilter/ebt_redirect.c @@ -0,0 +1,80 @@ +/* + * ebt_redirect + * + * Authors: + * Bart De Schuymer <bdschuym@pandora.be> + * + * April, 2002 + * + */ +#include <linux/module.h> +#include <net/sock.h> +#include "../br_private.h" +#include <linux/netfilter.h> +#include <linux/netfilter/x_tables.h> +#include <linux/netfilter_bridge/ebtables.h> +#include <linux/netfilter_bridge/ebt_redirect.h> + +static unsigned int +ebt_redirect_tg(struct sk_buff *skb, const struct xt_action_param *par) +{ + const struct ebt_redirect_info *info = par->targinfo; + + if (!skb_make_writable(skb, 0)) + return EBT_DROP; + + if (par->hooknum != NF_BR_BROUTING) + /* rcu_read_lock()ed by nf_hook_slow */ + ether_addr_copy(eth_hdr(skb)->h_dest, + br_port_get_rcu(par->in)->br->dev->dev_addr); + else + ether_addr_copy(eth_hdr(skb)->h_dest, par->in->dev_addr); + skb->pkt_type = PACKET_HOST; + return info->target; +} + +static int ebt_redirect_tg_check(const struct xt_tgchk_param *par) +{ + const struct ebt_redirect_info *info = par->targinfo; + unsigned int hook_mask; + + if (BASE_CHAIN && info->target == EBT_RETURN) + return -EINVAL; + + hook_mask = par->hook_mask & ~(1 << NF_BR_NUMHOOKS); + if ((strcmp(par->table, "nat") != 0 || + hook_mask & ~(1 << NF_BR_PRE_ROUTING)) && + (strcmp(par->table, "broute") != 0 || + hook_mask & ~(1 << NF_BR_BROUTING))) + return -EINVAL; + if (INVALID_TARGET) + return -EINVAL; + return 0; +} + +static struct xt_target ebt_redirect_tg_reg __read_mostly = { + .name = "redirect", + .revision = 0, + .family = NFPROTO_BRIDGE, + .hooks = (1 << NF_BR_NUMHOOKS) | (1 << NF_BR_PRE_ROUTING) | + (1 << NF_BR_BROUTING), + .target = ebt_redirect_tg, + .checkentry = ebt_redirect_tg_check, + .targetsize = sizeof(struct ebt_redirect_info), + .me = THIS_MODULE, +}; + +static int __init ebt_redirect_init(void) +{ + return xt_register_target(&ebt_redirect_tg_reg); +} + +static void __exit ebt_redirect_fini(void) +{ + xt_unregister_target(&ebt_redirect_tg_reg); +} + +module_init(ebt_redirect_init); +module_exit(ebt_redirect_fini); +MODULE_DESCRIPTION("Ebtables: Packet redirection to localhost"); +MODULE_LICENSE("GPL"); |