diff options
| author |   Jerome Tollet <jtollet@cisco.com> | 2020-12-18 09:44:24 +0100 |
|---|---|---|
| committer |   John Lo <loj@cisco.com> | 2021-01-06 04:17:09 +0000 |
| commit | 5f93e3b7f85e2257406cf601e5f231a872100fcf (patch) | |
| tree | a9ae2588b3d28ac380b0a97b827ac52101ebbd52 /src/vnet/l2/l2_learn.c | |
| parent | 1b576e0aa08c575a4409b50dc71e8f51d231f199 (diff) | |
l2: add per bridge domain learn limit
Type: feature
Signed-off-by: Jerome Tollet <jtollet@cisco.com>
Change-Id: I57ed6699050445d9c9aec98eff3aab56735aca54
Signed-off-by: Jerome Tollet <jtollet@cisco.com>
Diffstat (limited to 'src/vnet/l2/l2_learn.c')
| -rw-r--r-- | src/vnet/l2/l2_learn.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/src/vnet/l2/l2_learn.c b/src/vnet/l2/l2_learn.c index 6f2201b3ade..3b9b1dbcaa9 100644 --- a/src/vnet/l2/l2_learn.c +++ b/src/vnet/l2/l2_learn.c @@ -119,6 +119,8 @@ l2learn_process (vlib_node_runtime_t * node, u32 * count, l2fib_entry_result_t * result0, u16 * next0, u8 timestamp) { + l2_bridge_domain_t *bd_config = + vec_elt_at_index (l2input_main.bd_configs, vnet_buffer (b0)->l2.bd_index); /* Set up the default next node (typically L2FWD) */ *next0 = vnet_l2_feature_next (b0, msm->feat_next_node_index, L2INPUT_FEAT_LEARN); @@ -137,6 +139,8 @@ l2learn_process (vlib_node_runtime_t * node, return; /* Static MAC always age_not */ if (msm->global_learn_count > msm->global_learn_limit) return; /* Above learn limit - do not update */ + if (bd_config->learn_count > bd_config->learn_limit) + return; /* Above bridge domain 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 @@ -152,7 +156,8 @@ l2learn_process (vlib_node_runtime_t * node, /* Entry not in L2FIB - add it */ counter_base[L2LEARN_ERROR_MISS] += 1; - if (msm->global_learn_count >= msm->global_learn_limit) + if ((msm->global_learn_count >= msm->global_learn_limit) || + (bd_config->learn_count >= bd_config->learn_limit)) { /* * Global limit reached. Do not learn the mac but forward the packet. @@ -169,7 +174,11 @@ l2learn_process (vlib_node_runtime_t * node, return; /* It is ok to learn */ + /* learn_count variable may have little inaccuracy because they are not + * incremented/decremented with atomic operations */ + /* l2fib_scan is call every 2sec fixing potential inaccuracy */ msm->global_learn_count++; + bd_config->learn_count++; result0->raw = 0; /* clear all fields */ result0->fields.sw_if_index = sw_if_index0; if (msm->client_pid != 0) @@ -208,7 +217,12 @@ l2learn_process (vlib_node_runtime_t * node, if (l2fib_entry_result_is_set_AGE_NOT (result0)) { /* The mac was provisioned */ + /* learn_count variable may have little inaccuracy because they are + * not incremented/decremented with atomic operations */ + /* l2fib_scan is call every 2sec fixing potential inaccuracy */ msm->global_learn_count++; + bd_config->learn_count++; + l2fib_entry_result_clear_AGE_NOT (result0); } if (msm->client_pid != 0) @@ -470,6 +484,11 @@ l2learn_init (vlib_main_t * vm) */ mp->global_learn_limit = L2LEARN_DEFAULT_LIMIT; + /* + * Set the default number of dynamically learned macs to the number + * of buckets. + */ + mp->bd_default_learn_limit = L2LEARN_DEFAULT_LIMIT; return 0; } |