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mac-learning: Fix serious performance bug in the learning table.
author
Ethan Jackson
<ethan@nicira.com>
Fri, 22 Jul 2011 00:58:47 +0000
(17:58 -0700)
committer
Ben Pfaff
<blp@nicira.com>
Fri, 22 Jul 2011 18:45:11 +0000
(11:45 -0700)
Due to a typo, the mac-learning hash table had dissolved into a
linked list. This caused a significant reduction in performance.
lib/mac-learning.c
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diff --git
a/lib/mac-learning.c
b/lib/mac-learning.c
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42864ce
..
b010406
100644
(file)
--- a/
lib/mac-learning.c
+++ b/
lib/mac-learning.c
@@
-73,7
+73,7
@@
mac_table_bucket(const struct mac_learning *ml,
uint16_t vlan)
{
uint32_t hash = mac_table_hash(mac, vlan);
- const struct list *list = &ml->table[hash & MAC_HASH_
BITS
];
+ const struct list *list = &ml->table[hash & MAC_HASH_
MASK
];
return (struct list *) list;
}