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mac-learning: New function mac_entry_age().

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This function will be used as part of printing the MAC learning table at
user request.
This commit is contained in:
Ben Pfaff
2009-07-15 11:02:24 -07:00
parent eaa7133434
commit 321943f790
2 changed files with 14 additions and 1 deletions
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10
lib/mac-learning.c
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@@ -32,6 +32,14 @@
#define THIS_MODULE VLM_mac_learning
#include "vlog.h"
/* Returns the number of seconds since 'e' was last learned. */
int
mac_entry_age(const struct mac_entry *e)
{
time_t remaining = e->expires - time_now();
return MAC_ENTRY_IDLE_TIME - remaining;
}
static uint32_t
mac_table_hash(const uint8_t mac[ETH_ADDR_LEN], uint16_t vlan)
{
@@ -174,7 +182,7 @@ mac_learning_learn(struct mac_learning *ml,
/* Make the entry most-recently-used. */
list_remove(&e->lru_node);
list_push_back(&ml->lrus, &e->lru_node);
e->expires = time_now() + 60;
e->expires = time_now() + MAC_ENTRY_IDLE_TIME;
/* Did we learn something? */
if (e->port != src_port) {