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authorHerbert Xu <herbert@gondor.apana.org.au>2010-02-27 19:41:51 +0000
committerDavid S. Miller <davem@davemloft.net>2010-02-28 00:49:46 -0800
commitb195167fcf089dbdc650bb874084555035f07f98 (patch)
tree9b0c491bd1e6e13472d074986869a9aafcb3ae3f /net/bridge/br_private.h
parent561f1103a2b70de7e06e1e7fd072a5b142a4278c (diff)
bridge: Add hash elasticity/max sysfs entries
This patch allows the user to control the hash elasticity/max parameters. The elasticity setting does not take effect until the next new multicast group is added. At which point it is checked and if after rehashing it still can't be satisfied then snooping will be disabled. The max setting on the other hand takes effect immediately. It must be a power of two and cannot be set to a value less than the current number of multicast group entries. This is the only way to shrink the multicast hash. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_private.h')
-rw-r--r--net/bridge/br_private.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index bf162fa6b23..9191198c4f1 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -301,6 +301,7 @@ extern int br_multicast_set_router(struct net_bridge *br, unsigned long val);
extern int br_multicast_set_port_router(struct net_bridge_port *p,
unsigned long val);
extern int br_multicast_toggle(struct net_bridge *br, unsigned long val);
+extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
#else
static inline int br_multicast_rcv(struct net_bridge *br,
struct net_bridge_port *port,