diff options
Diffstat (limited to 'net/ipv6/netfilter/ip6t_physdev.c')
| -rw-r--r-- | net/ipv6/netfilter/ip6t_physdev.c | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/net/ipv6/netfilter/ip6t_physdev.c b/net/ipv6/netfilter/ip6t_physdev.c deleted file mode 100644 index 71515c86ece1..000000000000 --- a/net/ipv6/netfilter/ip6t_physdev.c +++ /dev/null @@ -1,135 +0,0 @@ -/* Kernel module to match the bridge port in and - * out device for IP packets coming into contact with a bridge. */ - -/* (C) 2001-2003 Bart De Schuymer <bdschuym@pandora.be> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/module.h> -#include <linux/skbuff.h> -#include <linux/netfilter_ipv6/ip6t_physdev.h> -#include <linux/netfilter_ipv6/ip6_tables.h> -#include <linux/netfilter_bridge.h> -#define MATCH 1 -#define NOMATCH 0 - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Bart De Schuymer <bdschuym@pandora.be>"); -MODULE_DESCRIPTION("iptables bridge physical device match module"); - -static int -match(const struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - const void *matchinfo, - int offset, - unsigned int protoff, - int *hotdrop) -{ - int i; - static const char nulldevname[IFNAMSIZ]; - const struct ip6t_physdev_info *info = matchinfo; - unsigned int ret; - const char *indev, *outdev; - struct nf_bridge_info *nf_bridge; - - /* Not a bridged IP packet or no info available yet: - * LOCAL_OUT/mangle and LOCAL_OUT/nat don't know if - * the destination device will be a bridge. */ - if (!(nf_bridge = skb->nf_bridge)) { - /* Return MATCH if the invert flags of the used options are on */ - if ((info->bitmask & IP6T_PHYSDEV_OP_BRIDGED) && - !(info->invert & IP6T_PHYSDEV_OP_BRIDGED)) - return NOMATCH; - if ((info->bitmask & IP6T_PHYSDEV_OP_ISIN) && - !(info->invert & IP6T_PHYSDEV_OP_ISIN)) - return NOMATCH; - if ((info->bitmask & IP6T_PHYSDEV_OP_ISOUT) && - !(info->invert & IP6T_PHYSDEV_OP_ISOUT)) - return NOMATCH; - if ((info->bitmask & IP6T_PHYSDEV_OP_IN) && - !(info->invert & IP6T_PHYSDEV_OP_IN)) - return NOMATCH; - if ((info->bitmask & IP6T_PHYSDEV_OP_OUT) && - !(info->invert & IP6T_PHYSDEV_OP_OUT)) - return NOMATCH; - return MATCH; - } - - /* This only makes sense in the FORWARD and POSTROUTING chains */ - if ((info->bitmask & IP6T_PHYSDEV_OP_BRIDGED) && - (!!(nf_bridge->mask & BRNF_BRIDGED) ^ - !(info->invert & IP6T_PHYSDEV_OP_BRIDGED))) - return NOMATCH; - - if ((info->bitmask & IP6T_PHYSDEV_OP_ISIN && - (!nf_bridge->physindev ^ !!(info->invert & IP6T_PHYSDEV_OP_ISIN))) || - (info->bitmask & IP6T_PHYSDEV_OP_ISOUT && - (!nf_bridge->physoutdev ^ !!(info->invert & IP6T_PHYSDEV_OP_ISOUT)))) - return NOMATCH; - - if (!(info->bitmask & IP6T_PHYSDEV_OP_IN)) - goto match_outdev; - indev = nf_bridge->physindev ? nf_bridge->physindev->name : nulldevname; - for (i = 0, ret = 0; i < IFNAMSIZ/sizeof(unsigned int); i++) { - ret |= (((const unsigned int *)indev)[i] - ^ ((const unsigned int *)info->physindev)[i]) - & ((const unsigned int *)info->in_mask)[i]; - } - - if ((ret == 0) ^ !(info->invert & IP6T_PHYSDEV_OP_IN)) - return NOMATCH; - -match_outdev: - if (!(info->bitmask & IP6T_PHYSDEV_OP_OUT)) - return MATCH; - outdev = nf_bridge->physoutdev ? - nf_bridge->physoutdev->name : nulldevname; - for (i = 0, ret = 0; i < IFNAMSIZ/sizeof(unsigned int); i++) { - ret |= (((const unsigned int *)outdev)[i] - ^ ((const unsigned int *)info->physoutdev)[i]) - & ((const unsigned int *)info->out_mask)[i]; - } - - return (ret != 0) ^ !(info->invert & IP6T_PHYSDEV_OP_OUT); -} - -static int -checkentry(const char *tablename, - const struct ip6t_ip6 *ip, - void *matchinfo, - unsigned int matchsize, - unsigned int hook_mask) -{ - const struct ip6t_physdev_info *info = matchinfo; - - if (matchsize != IP6T_ALIGN(sizeof(struct ip6t_physdev_info))) - return 0; - if (!(info->bitmask & IP6T_PHYSDEV_OP_MASK) || - info->bitmask & ~IP6T_PHYSDEV_OP_MASK) - return 0; - return 1; -} - -static struct ip6t_match physdev_match = { - .name = "physdev", - .match = &match, - .checkentry = &checkentry, - .me = THIS_MODULE, -}; - -static int __init init(void) -{ - return ip6t_register_match(&physdev_match); -} - -static void __exit fini(void) -{ - ip6t_unregister_match(&physdev_match); -} - -module_init(init); -module_exit(fini); |