diff options
| author |   John Lo <loj@cisco.com> | 2018-04-28 01:19:24 -0400 |
|---|---|---|
| committer |   Florin Coras <florin.coras@gmail.com> | 2018-05-11 22:35:30 +0000 |
| commit | 7f358b30b04aabe9a35680997cc1eeefb080a869 (patch) | |
| tree | 25b82c278355adf4a49289b31e3e3ca008bbc743 /src/vnet/l2/l2_fib.c | |
| parent | 84c6204969898453aacfa900876e7b7eecd8be0e (diff) | |
Periodic scan and probe of IP neighbors to maintain neighbor pools
Scan IPv4 and IPv6 neigbor pool entries once a minute to keep them
up to date. The neighbor of an entry is probed if its time-stamp
is older than 1 minute. If the neighbor respond, its time-stamp
will be updated. If there is no response from a neighbor, its
entry will be deleted when the time-stamp of the entry become more
than 4 minutes old. Static neighbor entries are not probed nor
deleted.
Implemented CLI and API to enable and disable priodic scan of IPv4,
IPv6 or both types of IP neighbors. CLI is "ip scan-neighbor" and
API is "ip_scan_neighbor_enable_disable". Other IP neighbor scan
parameters can also be changed from their defaults via the CLI/API.
Change-Id: Id1a0a934ace15d03db845aa698bcbb9cdabebfcd
Signed-off-by: John Lo <loj@cisco.com>
Diffstat (limited to 'src/vnet/l2/l2_fib.c')
| -rw-r--r-- | src/vnet/l2/l2_fib.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/src/vnet/l2/l2_fib.c b/src/vnet/l2/l2_fib.c index 99d99c57f73..918700b2129 100644 --- a/src/vnet/l2/l2_fib.c +++ b/src/vnet/l2/l2_fib.c @@ -1122,9 +1122,6 @@ l2fib_scan (vlib_main_t * vm, f64 start_time, u8 event_only) return delta_t + accum_t; } -/* Maximum f64 value */ -#define TIME_MAX (1.7976931348623157e+308) - static uword l2fib_mac_age_scanner_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f) @@ -1133,7 +1130,7 @@ l2fib_mac_age_scanner_process (vlib_main_t * vm, vlib_node_runtime_t * rt, l2fib_main_t *fm = &l2fib_main; l2learn_main_t *lm = &l2learn_main; bool enabled = 0; - f64 start_time, next_age_scan_time = TIME_MAX; + f64 start_time, next_age_scan_time = CLIB_TIME_MAX; while (1) { @@ -1192,7 +1189,7 @@ l2fib_mac_age_scanner_process (vlib_main_t * vm, vlib_node_runtime_t * rt, if (enabled) next_age_scan_time = start_time + L2FIB_AGE_SCAN_INTERVAL; else - next_age_scan_time = TIME_MAX; + next_age_scan_time = CLIB_TIME_MAX; } } return 0; |