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netfilter: nf_tables: attach net_device to basechain

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The device is part of the hook configuration, so instead of a global
configuration per table, set it to each of the basechain that we create.

This patch reworks ebddf1a8d7 ("netfilter: nf_tables: allow to bind table to
net_device").

Note that this adds a dev_name field in the nft_base_chain structure which is
required the netdev notification subscription that follows up in a patch to
handle gone net_devices.

Suggested-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso 2015-06-12 13:55:41 +02:00
parent 711bdde6a8
commit 2cbce139fc
3 changed files with 46 additions and 41 deletions
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4
include/uapi/linux/netfilter/nf_tables.h
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@ -122,11 +122,13 @@ enum nft_list_attributes {
*
* @NFTA_HOOK_HOOKNUM: netfilter hook number (NLA_U32)
* @NFTA_HOOK_PRIORITY: netfilter hook priority (NLA_U32)
* @NFTA_HOOK_DEV: netdevice name (NLA_STRING)
*/
enum nft_hook_attributes {
NFTA_HOOK_UNSPEC,
NFTA_HOOK_HOOKNUM,
NFTA_HOOK_PRIORITY,
NFTA_HOOK_DEV,
__NFTA_HOOK_MAX
};
#define NFTA_HOOK_MAX (__NFTA_HOOK_MAX - 1)
@ -146,14 +148,12 @@ enum nft_table_flags {
* @NFTA_TABLE_NAME: name of the table (NLA_STRING)
* @NFTA_TABLE_FLAGS: bitmask of enum nft_table_flags (NLA_U32)
* @NFTA_TABLE_USE: number of chains in this table (NLA_U32)
* @NFTA_TABLE_DEV: net device name (NLA_STRING)
*/
enum nft_table_attributes {
NFTA_TABLE_UNSPEC,
NFTA_TABLE_NAME,
NFTA_TABLE_FLAGS,
NFTA_TABLE_USE,
NFTA_TABLE_DEV,
__NFTA_TABLE_MAX
};
#define NFTA_TABLE_MAX (__NFTA_TABLE_MAX - 1)