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netfilter: nf_tables: allow to bind table to net_device

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This patch adds the internal NFT_AF_NEEDS_DEV flag to indicate that you must
attach this table to a net_device.

This change is required by the follow up patch that introduces the new netdev
table.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso 2015-05-26 18:41:20 +02:00
commit ebddf1a8d7
3 changed files with 51 additions and 5 deletions
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8
include/net/netfilter/nf_tables.h
View file

@ -819,6 +819,7 @@ unsigned int nft_do_chain(struct nft_pktinfo *pkt,
* @use: number of chain references to this table
* @flags: table flag (see enum nft_table_flags)
* @name: name of the table
* @dev: this table is bound to this device (if any)
*/
struct nft_table {
struct list_head list;
@ -828,6 +829,11 @@ struct nft_table {
u32 use;
u16 flags;
char name[NFT_TABLE_MAXNAMELEN];
struct net_device *dev;
};
enum nft_af_flags {
NFT_AF_NEEDS_DEV = (1 << 0),
};
/**
@ -838,6 +844,7 @@ struct nft_table {
* @nhooks: number of hooks in this family
* @owner: module owner
* @tables: used internally
* @flags: family flags
* @nops: number of hook ops in this family
* @hook_ops_init: initialization function for chain hook ops
* @hooks: hookfn overrides for packet validation
@ -848,6 +855,7 @@ struct nft_af_info {
unsigned int nhooks;
struct module *owner;
struct list_head tables;
u32 flags;
unsigned int nops;
void (*hook_ops_init)(struct nf_hook_ops *,
unsigned int);