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authorLinus Torvalds <torvalds@linux-foundation.org>2011-03-16 16:29:25 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-16 16:29:25 -0700
commit7a6362800cb7d1d618a697a650c7aaed3eb39320 (patch)
tree087f9bc6c13ef1fad4b392c5cf9325cd28fa8523 /net/netfilter/xt_devgroup.c
parent6445ced8670f37cfc2c5e24a9de9b413dbfc788d (diff)
parentceda86a108671294052cbf51660097b6534672f5 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1480 commits) bonding: enable netpoll without checking link status xfrm: Refcount destination entry on xfrm_lookup net: introduce rx_handler results and logic around that bonding: get rid of IFF_SLAVE_INACTIVE netdev->priv_flag bonding: wrap slave state work net: get rid of multiple bond-related netdevice->priv_flags bonding: register slave pointer for rx_handler be2net: Bump up the version number be2net: Copyright notice change. Update to Emulex instead of ServerEngines e1000e: fix kconfig for crc32 dependency netfilter ebtables: fix xt_AUDIT to work with ebtables xen network backend driver bonding: Improve syslog message at device creation time bonding: Call netif_carrier_off after register_netdevice bonding: Incorrect TX queue offset net_sched: fix ip_tos2prio xfrm: fix __xfrm_route_forward() be2net: Fix UDP packet detected status in RX compl Phonet: fix aligned-mode pipe socket buffer header reserve netxen: support for GbE port settings ... Fix up conflicts in drivers/staging/brcm80211/brcmsmac/wl_mac80211.c with the staging updates.
Diffstat (limited to 'net/netfilter/xt_devgroup.c')
-rw-r--r--net/netfilter/xt_devgroup.c82
1 files changed, 82 insertions, 0 deletions
diff --git a/net/netfilter/xt_devgroup.c b/net/netfilter/xt_devgroup.c
new file mode 100644
index 000000000000..d9202cdd25c9
--- /dev/null
+++ b/net/netfilter/xt_devgroup.c
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2011 Patrick McHardy <kaber@trash.net>
+ *
+ * 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/netdevice.h>
+
+#include <linux/netfilter/xt_devgroup.h>
+#include <linux/netfilter/x_tables.h>
+
+MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Xtables: Device group match");
+MODULE_ALIAS("ipt_devgroup");
+MODULE_ALIAS("ip6t_devgroup");
+
+static bool devgroup_mt(const struct sk_buff *skb, struct xt_action_param *par)
+{
+ const struct xt_devgroup_info *info = par->matchinfo;
+
+ if (info->flags & XT_DEVGROUP_MATCH_SRC &&
+ (((info->src_group ^ par->in->group) & info->src_mask ? 1 : 0) ^
+ ((info->flags & XT_DEVGROUP_INVERT_SRC) ? 1 : 0)))
+ return false;
+
+ if (info->flags & XT_DEVGROUP_MATCH_DST &&
+ (((info->dst_group ^ par->out->group) & info->dst_mask ? 1 : 0) ^
+ ((info->flags & XT_DEVGROUP_INVERT_DST) ? 1 : 0)))
+ return false;
+
+ return true;
+}
+
+static int devgroup_mt_checkentry(const struct xt_mtchk_param *par)
+{
+ const struct xt_devgroup_info *info = par->matchinfo;
+
+ if (info->flags & ~(XT_DEVGROUP_MATCH_SRC | XT_DEVGROUP_INVERT_SRC |
+ XT_DEVGROUP_MATCH_DST | XT_DEVGROUP_INVERT_DST))
+ return -EINVAL;
+
+ if (info->flags & XT_DEVGROUP_MATCH_SRC &&
+ par->hook_mask & ~((1 << NF_INET_PRE_ROUTING) |
+ (1 << NF_INET_LOCAL_IN) |
+ (1 << NF_INET_FORWARD)))
+ return -EINVAL;
+
+ if (info->flags & XT_DEVGROUP_MATCH_DST &&
+ par->hook_mask & ~((1 << NF_INET_FORWARD) |
+ (1 << NF_INET_LOCAL_OUT) |
+ (1 << NF_INET_POST_ROUTING)))
+ return -EINVAL;
+
+ return 0;
+}
+
+static struct xt_match devgroup_mt_reg __read_mostly = {
+ .name = "devgroup",
+ .match = devgroup_mt,
+ .checkentry = devgroup_mt_checkentry,
+ .matchsize = sizeof(struct xt_devgroup_info),
+ .family = NFPROTO_UNSPEC,
+ .me = THIS_MODULE
+};
+
+static int __init devgroup_mt_init(void)
+{
+ return xt_register_match(&devgroup_mt_reg);
+}
+
+static void __exit devgroup_mt_exit(void)
+{
+ xt_unregister_match(&devgroup_mt_reg);
+}
+
+module_init(devgroup_mt_init);
+module_exit(devgroup_mt_exit);