diff options
| author |   John Lo <loj@cisco.com> | 2017-10-03 13:13:47 -0400 |
|---|---|---|
| committer |   Florin Coras <florin.coras@gmail.com> | 2017-10-03 18:59:25 +0000 |
| commit | 5a6508d7269266b4a3ecacdd197ea3514a0c0e28 (patch) | |
| tree | 35631094986aaccf4927da10963dea16887aaf2d /src/vnet/l2/l2_learn.c | |
| parent | c6038c91ad0d12945877cdcd451ce27da06a40e9 (diff) | |
Update L2FIB entry timestamp only if BD aging enabled (VPP-1002)
Change L2 learning path so it update stale timestamp in MAC entry
only if aging is enabled on the BD for the MAC entry.
Change-Id: I7babe986ceef3c030d8ef9185076c42b405f7b0f
Signed-off-by: John Lo <loj@cisco.com>
Diffstat (limited to 'src/vnet/l2/l2_learn.c')
| -rw-r--r-- | src/vnet/l2/l2_learn.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/vnet/l2/l2_learn.c b/src/vnet/l2/l2_learn.c index 066bb54fe2e..fddab82426c 100644 --- a/src/vnet/l2/l2_learn.c +++ b/src/vnet/l2/l2_learn.c @@ -126,7 +126,7 @@ l2learn_process (vlib_node_runtime_t * node, /* Entry in L2FIB with matching sw_if_index matched - normal fast path */ u32 dtime = timestamp - result0->fields.timestamp; u32 dsn = result0->fields.sn.as_u16 - vnet_buffer (b0)->l2.l2fib_sn; - u32 check = dtime | dsn; + u32 check = (dtime && vnet_buffer (b0)->l2.bd_age) || dsn; if (PREDICT_TRUE (check == 0)) return; /* MAC entry up to date */ @@ -136,8 +136,9 @@ l2learn_process (vlib_node_runtime_t * node, return; /* Above learn limit - do not update */ /* Limit updates per l2-learn node call to avoid prolonged update burst - * as dtime advance over 1 minute mark, unless more than 1 min behind */ - if ((*count > 2) && (dtime == 1)) + * as dtime advance over 1 minute mark, unless more than 1 min behind + * or SN obsolete */ + if ((*count > 2) && (dtime == 1) && (dsn == 0)) return; counter_base[L2LEARN_ERROR_HIT_UPDATE] += 1; |