[ovs-dev] [optimize 19/26] mac-learning: Speed up mac_table_hash().
Ben Pfaff
blp at nicira.com
Tue Apr 17 00:18:59 UTC 2012
---
lib/mac-learning.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/lib/mac-learning.c b/lib/mac-learning.c
index e0618c2..68fc621 100644
--- a/lib/mac-learning.c
+++ b/lib/mac-learning.c
@@ -28,6 +28,7 @@
#include "poll-loop.h"
#include "tag.h"
#include "timeval.h"
+#include "unaligned.h"
#include "util.h"
#include "vlan-bitmap.h"
#include "vlog.h"
@@ -49,7 +50,9 @@ static uint32_t
mac_table_hash(const struct mac_learning *ml, const uint8_t mac[ETH_ADDR_LEN],
uint16_t vlan)
{
- return hash_bytes(mac, ETH_ADDR_LEN, vlan ^ ml->secret);
+ unsigned int mac1 = get_unaligned_u32((uint32_t *) mac);
+ unsigned int mac2 = get_unaligned_u16((uint16_t *) (mac + 4));
+ return hash_3words(mac1, mac2 | (vlan << 16), ml->secret);
}
static struct mac_entry *
--
1.7.9
More information about the dev
mailing list