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net: bridge: vlan: add rtm definitions and dump support

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This patch adds vlan rtm definitions:
 - NEWVLAN: to be used for creating vlans, setting options and
   notifications
 - DELVLAN: to be used for deleting vlans
 - GETVLAN: used for dumping vlan information

Dumping vlans which can span multiple messages is added now with basic
information (vid and flags). We use nlmsg_parse() to validate the header
length in order to be able to extend the message with filtering
attributes later.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nikolay Aleksandrov
2020-01-14 19:56:09 +02:00
committed by David S. Miller
parent 8f4cc940a1
commit 8dcea18708
6 changed files with 203 additions and 1 deletions
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28
include/uapi/linux/if_bridge.h
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@@ -165,6 +165,34 @@ struct bridge_stp_xstats {
__u64 tx_tcn;
};
/* Bridge vlan RTM header */
struct br_vlan_msg {
__u8 family;
__u8 reserved1;
__u16 reserved2;
__u32 ifindex;
};
/* Bridge vlan RTM attributes
* [BRIDGE_VLANDB_ENTRY] = {
* [BRIDGE_VLANDB_ENTRY_INFO]
* ...
* }
*/
enum {
BRIDGE_VLANDB_UNSPEC,
BRIDGE_VLANDB_ENTRY,
__BRIDGE_VLANDB_MAX,
};
#define BRIDGE_VLANDB_MAX (__BRIDGE_VLANDB_MAX - 1)
enum {
BRIDGE_VLANDB_ENTRY_UNSPEC,
BRIDGE_VLANDB_ENTRY_INFO,
__BRIDGE_VLANDB_ENTRY_MAX,
};
#define BRIDGE_VLANDB_ENTRY_MAX (__BRIDGE_VLANDB_ENTRY_MAX - 1)
/* Bridge multicast database attributes
* [MDBA_MDB] = {
* [MDBA_MDB_ENTRY] = {