diff options
| author | Ben Pfaff <blp@nicira.com> | 2009-07-15 11:02:24 -0700 |
|---|---|---|
| committer | Ben Pfaff <blp@nicira.com> | 2009-07-16 09:17:06 -0700 |
| commit | 321943f7904e1e28948e68cb1c78d89f169c07a2 (patch) | |
| tree | 6b8a811edb9d936c63be278c92d0894012396cce /lib/mac-learning.c | |
| parent | eaa71334348aa0d99abf5588e17b3e55d0db28ce (diff) | |
mac-learning: New function mac_entry_age().
This function will be used as part of printing the MAC learning table at
user request.
Diffstat (limited to 'lib/mac-learning.c')
| -rw-r--r-- | lib/mac-learning.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/lib/mac-learning.c b/lib/mac-learning.c index eeebce86..c9b7d3e7 100644 --- a/lib/mac-learning.c +++ b/lib/mac-learning.c @@ -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) { |