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net: bridge: add no_linklocal_learn bool option

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Use the new boolopt API to add an option which disables learning from
link-local packets. The default is kept as before and learning is
enabled. This is a simple map from a boolopt bit to a bridge private
flag that is tested before learning.

v2: pass NULL for extack via sysfs

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nikolay Aleksandrov
2018-11-24 04:34:21 +02:00
committed by David S. Miller
parent a428afe82f
commit 70e4272b4c
5 changed files with 34 additions and 1 deletions
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5
net/bridge/br.c
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@@ -189,6 +189,9 @@ int br_boolopt_toggle(struct net_bridge *br, enum br_boolopt_id opt, bool on,
struct netlink_ext_ack *extack)
{
switch (opt) {
case BR_BOOLOPT_NO_LL_LEARN:
br_opt_toggle(br, BROPT_NO_LL_LEARN, on);
break;
default:
/* shouldn't be called with unsupported options */
WARN_ON(1);
@@ -201,6 +204,8 @@ int br_boolopt_toggle(struct net_bridge *br, enum br_boolopt_id opt, bool on,
int br_boolopt_get(const struct net_bridge *br, enum br_boolopt_id opt)
{
switch (opt) {
case BR_BOOLOPT_NO_LL_LEARN:
return br_opt_get(br, BROPT_NO_LL_LEARN);
default:
/* shouldn't be called with unsupported options */
WARN_ON(1);