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net: bridge: increase multicast's default maximum number of entries

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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 <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nikolay Aleksandrov 2018-12-05 15:14:27 +02:00 committed by David S. Miller
parent cf332bca56
commit d08c6bc08f
2 changed files with 3 additions and 1 deletions
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2
net/bridge/br_multicast.c
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@ -1741,7 +1741,7 @@ 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;

2
net/bridge/br_private.h
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@ -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 */