[PATCH net-next 3/3] net: bridge: increase multicast's default maximum number of entries

[Nikolay Aleksandrov]

bridge's default hash_max was 512 which is rather conservative, now that
we're using the generic rhashtable API which autoshrinks let's increase
it to 4096 and move it to a define in br_private.h.

Signed-off-by: Nikolay Aleksandrov <niko...@cumulusnetworks.com>
---
 net/bridge/br_multicast.c | 2 +-
 net/bridge/br_private.h   | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 79f981a4c225..5871086a0ab1 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -1743,7 +1743,7 @@ static void br_ip6_multicast_query_expired(struct 
timer_list *t)
 
 void br_multicast_init(struct net_bridge *br)
 {
-       br->hash_max = 512;
+       br->hash_max = BR_MULTICAST_DEFAULT_HASH_MAX;
 
        br->multicast_router = MDB_RTR_TYPE_TEMP_QUERY;
        br->multicast_last_member_count = 2;
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index e3c56b418543..a469a779478e 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -31,6 +31,8 @@
 #define BR_PORT_BITS   10
 #define BR_MAX_PORTS   (1<<BR_PORT_BITS)
 
+#define BR_MULTICAST_DEFAULT_HASH_MAX 4096
+
 #define BR_VERSION     "2.3"
 
 /* Control of forwarding link local multicast */
-- 
2.17.2