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net: bridge: vlan: add support for global options

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We can have two types of vlan options depending on context:
 - per-device vlan options (split in per-bridge and per-port)
 - global vlan options

The second type wasn't supported in the bridge until now, but we need
them for per-vlan multicast support, per-vlan STP support and other
options which require global vlan context. They are contained in the global
bridge vlan context even if the vlan is not configured on the bridge device
itself. This patch adds initial netlink attributes and support for setting
these global vlan options, they can only be set (RTM_NEWVLAN) and the
operation must use the bridge device. Since there are no such options yet
it shouldn't have any functional effect.

Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nikolay Aleksandrov 2021-07-19 20:06:34 +03:00 • committed by David S. Miller
parent 1e9ca45662
commit 47ecd2dbd8
4 changed files with 115 additions and 3 deletions
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13
include/uapi/linux/if_bridge.h
View file

@ -485,10 +485,15 @@ enum {
* [BRIDGE_VLANDB_ENTRY_INFO]
* ...
* }
* [BRIDGE_VLANDB_GLOBAL_OPTIONS] = {
* [BRIDGE_VLANDB_GOPTS_ID]
* ...
* }
*/
enum {
BRIDGE_VLANDB_UNSPEC,
BRIDGE_VLANDB_ENTRY,
BRIDGE_VLANDB_GLOBAL_OPTIONS,
__BRIDGE_VLANDB_MAX,
};
#define BRIDGE_VLANDB_MAX (__BRIDGE_VLANDB_MAX - 1)
@ -538,6 +543,14 @@ enum {
};
#define BRIDGE_VLANDB_STATS_MAX (__BRIDGE_VLANDB_STATS_MAX - 1)
enum {
BRIDGE_VLANDB_GOPTS_UNSPEC,
BRIDGE_VLANDB_GOPTS_ID,
BRIDGE_VLANDB_GOPTS_RANGE,
__BRIDGE_VLANDB_GOPTS_MAX
};
#define BRIDGE_VLANDB_GOPTS_MAX (__BRIDGE_VLANDB_GOPTS_MAX - 1)
/* Bridge multicast database attributes
* [MDBA_MDB] = {
* [MDBA_MDB_ENTRY] = {