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Diffstat (limited to 'src/vnet/l2/l2_fib.c')
-rw-r--r--src/vnet/l2/l2_fib.c55
1 files changed, 46 insertions, 9 deletions
diff --git a/src/vnet/l2/l2_fib.c b/src/vnet/l2/l2_fib.c
index c28c23bc41c..82be6bc0341 100644
--- a/src/vnet/l2/l2_fib.c
+++ b/src/vnet/l2/l2_fib.c
@@ -212,8 +212,7 @@ l2fib_show_walk_cb (BVT (clib_bihash_kv) * kvp, void *arg)
if (ctx->add && !l2fib_entry_result_is_set_AGE_NOT (&result))
return (BIHASH_WALK_CONTINUE); /* skip learned macs */
- bd_config = vec_elt_at_index (l2input_main.bd_configs,
- key.fields.bd_index);
+ bd_config = &vec_elt (l2input_main.bd_configs, key.fields.bd_index);
if (l2fib_entry_result_is_set_AGE_NOT (&result))
s = format (s, "no");
@@ -384,6 +383,7 @@ void
l2fib_clear_table (void)
{
l2fib_main_t *mp = &l2fib_main;
+ l2_bridge_domain_t *bd_config;
if (mp->mac_table_initialized == 0)
return;
@@ -394,6 +394,8 @@ l2fib_clear_table (void)
BV (clib_bihash_free) (&mp->mac_table);
l2fib_table_init ();
l2learn_main.global_learn_count = 0;
+ vec_foreach (bd_config, l2input_main.bd_configs)
+ bd_config->learn_count = 0;
}
/** Clear all entries in L2FIB.
@@ -462,9 +464,21 @@ l2fib_add_entry (const u8 * mac, u32 bd_index,
{
/* decrement counter if overwriting a learned mac */
result.raw = kv.value;
- if ((!l2fib_entry_result_is_set_AGE_NOT (&result))
- && (lm->global_learn_count))
- lm->global_learn_count--;
+ if (!l2fib_entry_result_is_set_AGE_NOT (&result))
+ {
+ l2_bridge_domain_t *bd_config =
+ vec_elt_at_index (l2input_main.bd_configs, bd_index);
+
+ /* check if learn_count == 0 in case of race condition between 2
+ * workers adding an entry simultaneously */
+ /* 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 */
+ if (lm->global_learn_count)
+ lm->global_learn_count--;
+ if (bd_config->learn_count)
+ bd_config->learn_count--;
+ }
}
/* set up result */
@@ -751,9 +765,15 @@ l2fib_del_entry (const u8 * mac, u32 bd_index, u32 sw_if_index)
return 1;
/* decrement counter if dynamically learned mac */
- if ((!l2fib_entry_result_is_set_AGE_NOT (&result)) &&
- (l2learn_main.global_learn_count))
- l2learn_main.global_learn_count--;
+ if (!l2fib_entry_result_is_set_AGE_NOT (&result))
+ {
+ l2_bridge_domain_t *bd_config =
+ vec_elt_at_index (l2input_main.bd_configs, bd_index);
+ if (l2learn_main.global_learn_count)
+ l2learn_main.global_learn_count--;
+ if (bd_config->learn_count)
+ bd_config->learn_count--;
+ }
/* Remove entry from hash table */
BV (clib_bihash_add_del) (&mp->mac_table, &kv, 0 /* is_add */ );
@@ -1051,11 +1071,16 @@ l2fib_scan (vlib_main_t * vm, f64 start_time, u8 event_only)
u32 cl_idx = lm->client_index;
vl_api_l2_macs_event_t *mp = 0;
vl_api_registration_t *reg = 0;
+ u32 bd_index;
+ static u32 *bd_learn_counts = 0;
/* Don't scan the l2 fib if it hasn't been instantiated yet */
if (alloc_arena (h) == 0)
return 0.0;
+ vec_reset_length (bd_learn_counts);
+ vec_validate (bd_learn_counts, vec_len (l2input_main.bd_configs) - 1);
+
if (client)
{
mp = allocate_mac_evt_buf (client, cl_idx);
@@ -1069,6 +1094,9 @@ l2fib_scan (vlib_main_t * vm, f64 start_time, u8 event_only)
if (delta_t > 20e-6)
{
vlib_process_suspend (vm, 100e-6); /* suspend for 100 us */
+ /* in case a new bd was created while sleeping */
+ vec_validate (bd_learn_counts,
+ vec_len (l2input_main.bd_configs) - 1);
last_start = vlib_time_now (vm);
accum_t += delta_t;
}
@@ -1102,7 +1130,10 @@ l2fib_scan (vlib_main_t * vm, f64 start_time, u8 event_only)
l2fib_entry_result_t result = {.raw = v->kvp[k].value };
if (!l2fib_entry_result_is_set_AGE_NOT (&result))
- learn_count++;
+ {
+ learn_count++;
+ vec_elt (bd_learn_counts, key.fields.bd_index)++;
+ }
if (client)
{
@@ -1190,6 +1221,7 @@ l2fib_scan (vlib_main_t * vm, f64 start_time, u8 event_only)
kv.key = key.raw;
BV (clib_bihash_add_del) (&fm->mac_table, &kv, 0);
learn_count--;
+ vec_elt (bd_learn_counts, key.fields.bd_index)--;
/*
* Note: we may have just freed the bucket's backing
* storage, so check right here...
@@ -1205,6 +1237,11 @@ l2fib_scan (vlib_main_t * vm, f64 start_time, u8 event_only)
/* keep learn count consistent */
l2learn_main.global_learn_count = learn_count;
+ vec_foreach_index (bd_index, l2input_main.bd_configs)
+ {
+ vec_elt (l2input_main.bd_configs, bd_index).learn_count =
+ vec_elt (bd_learn_counts, bd_index);
+ }
if (mp)
{