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Code Issues Releases Wiki Activity

mac-learning: Speed up mac_table_hash().

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Signed-off-by: Ben Pfaff <blp@nicira.com>
This commit is contained in:
Ben Pfaff
2012-04-09 14:33:56 -07:00
parent 7376da647f
commit 18e8912987
1 changed files with 4 additions and 1 deletions
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5
lib/mac-learning.c
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@@ -28,6 +28,7 @@
#include "poll-loop.h" #include "poll-loop.h"
#include "tag.h" #include "tag.h"
#include "timeval.h" #include "timeval.h"
#include "unaligned.h"
#include "util.h" #include "util.h"
#include "vlan-bitmap.h" #include "vlan-bitmap.h"
#include "vlog.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], mac_table_hash(const struct mac_learning *ml, const uint8_t mac[ETH_ADDR_LEN],
uint16_t vlan) 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 * static struct mac_entry *