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authorNikolay Aleksandrov <nikolay@cumulusnetworks.com>2018-09-26 17:01:00 +0300
committerDavid S. Miller <davem@davemloft.net>2018-09-26 20:04:22 +0300
commitae75767ec206c6f445973e5e6c5af8a865016e15 (patch)
tree57826657093c9e7ddbbef377cf6e98fab0d5c5ef /net/bridge/br.c
parent1c1cb6d0321f4248e8a659a31659dcdac6866c29 (diff)
downloadlinux-ae75767ec206c6f445973e5e6c5af8a865016e15.tar.xz
net: bridge: add bitfield for options and convert vlan opts
Bridge options have usually been added as separate fields all over the net_bridge struct taking up space and ending up in different cache lines. Let's move them to a single bitfield to save up space and speedup lookups. This patch adds a simple API for option modifying and retrieving using bitops and converts the first user of the API - the bridge vlan options (vlan_enabled and vlan_stats_enabled). Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Reviewed-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br.c')
-rw-r--r--net/bridge/br.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/net/bridge/br.c b/net/bridge/br.c
index b0a0b82e2d91..e411e40333e2 100644
--- a/net/bridge/br.c
+++ b/net/bridge/br.c
@@ -175,6 +175,22 @@ static struct notifier_block br_switchdev_notifier = {
.notifier_call = br_switchdev_event,
};
+void br_opt_toggle(struct net_bridge *br, enum net_bridge_opts opt, bool on)
+{
+ bool cur = !!br_opt_get(br, opt);
+
+ br_debug(br, "toggle option: %d state: %d -> %d\n",
+ opt, cur, on);
+
+ if (cur == on)
+ return;
+
+ if (on)
+ set_bit(opt, &br->options);
+ else
+ clear_bit(opt, &br->options);
+}
+
static void __net_exit br_net_exit(struct net *net)
{
struct net_device *dev;