FIB table add/delete API

[vpp.git] / src / vnet / classify / vnet_classify.c

diff --git a/src/vnet/classify/vnet_classify.c b/src/vnet/classify/vnet_classify.c
index 418e3da..57d8674 100644 (file)
--- a/src/vnet/classify/vnet_classify.c
+++ b/src/vnet/classify/vnet_classify.c
@@ -362,6 +362,34 @@ split_and_rehash_linear (vnet_classify_table_t * t,
   return new_values;
 }
 
+static void
+vnet_classify_entry_claim_resource (vnet_classify_entry_t *e)
+{
+    switch (e->action)
+    {
+    case CLASSIFY_ACTION_SET_IP4_FIB_INDEX:
+        fib_table_lock (e->metadata, FIB_PROTOCOL_IP4, FIB_SOURCE_CLASSIFY);
+        break;
+    case CLASSIFY_ACTION_SET_IP6_FIB_INDEX:
+        fib_table_lock (e->metadata, FIB_PROTOCOL_IP6, FIB_SOURCE_CLASSIFY);
+        break;
+    }
+}
+
+static void
+vnet_classify_entry_release_resource (vnet_classify_entry_t *e)
+{
+    switch (e->action)
+    {
+    case CLASSIFY_ACTION_SET_IP4_FIB_INDEX:
+        fib_table_unlock (e->metadata, FIB_PROTOCOL_IP4, FIB_SOURCE_CLASSIFY);
+        break;
+    case CLASSIFY_ACTION_SET_IP6_FIB_INDEX:
+        fib_table_unlock (e->metadata, FIB_PROTOCOL_IP6, FIB_SOURCE_CLASSIFY);
+        break;
+    }
+}
+
 int vnet_classify_add_del (vnet_classify_table_t * t, 
                            vnet_classify_entry_t * add_v,
                            int is_add)
@@ -377,7 +405,7 @@ int vnet_classify_add_del (vnet_classify_table_t * t,
   u32 old_log2_pages, new_log2_pages;
   u32 thread_index = vlib_get_thread_index();
   u8 * key_minus_skip;
-  int resplit_once;
+  int resplit_once = 0;
   int mark_bucket_linear;
 
   ASSERT ((add_v->flags & VNET_CLASSIFY_ENTRY_FREE) == 0);
@@ -408,6 +436,7 @@ int vnet_classify_add_del (vnet_classify_table_t * t,
       clib_memcpy (v, add_v, sizeof (vnet_classify_entry_t) +
               t->match_n_vectors * sizeof (u32x4));
       v->flags &= ~(VNET_CLASSIFY_ENTRY_FREE);
+      vnet_classify_entry_claim_resource (v);
 
       tmp_b.as_u64 = 0;
       tmp_b.offset = vnet_classify_get_offset (t, v);
@@ -445,6 +474,7 @@ int vnet_classify_add_del (vnet_classify_table_t * t,
               clib_memcpy (v, add_v, sizeof (vnet_classify_entry_t) +
                       t->match_n_vectors * sizeof(u32x4));
               v->flags &= ~(VNET_CLASSIFY_ENTRY_FREE);
+              vnet_classify_entry_claim_resource (v);
 
               CLIB_MEMORY_BARRIER();
               /* Restore the previous (k,v) pairs */
@@ -461,6 +491,8 @@ int vnet_classify_add_del (vnet_classify_table_t * t,
               clib_memcpy (v, add_v, sizeof (vnet_classify_entry_t) +
                       t->match_n_vectors * sizeof(u32x4));
               v->flags &= ~(VNET_CLASSIFY_ENTRY_FREE);
+              vnet_classify_entry_claim_resource (v);
+
               CLIB_MEMORY_BARRIER();
               b->as_u64 = t->saved_bucket.as_u64;
               t->active_elements ++;
@@ -477,9 +509,11 @@ int vnet_classify_add_del (vnet_classify_table_t * t,
 
           if (!memcmp (v->key, add_v->key, t->match_n_vectors * sizeof (u32x4)))
             {
+              vnet_classify_entry_release_resource (v);
               memset (v, 0xff, sizeof (vnet_classify_entry_t) +
                       t->match_n_vectors * sizeof(u32x4));
               v->flags |= VNET_CLASSIFY_ENTRY_FREE;
+
               CLIB_MEMORY_BARRIER();
               b->as_u64 = t->saved_bucket.as_u64;
               t->active_elements --;
@@ -552,6 +586,8 @@ int vnet_classify_add_del (vnet_classify_table_t * t,
           clib_memcpy (new_v, add_v, sizeof (vnet_classify_entry_t) +
                   t->match_n_vectors * sizeof(u32x4));
           new_v->flags &= ~(VNET_CLASSIFY_ENTRY_FREE);
+          vnet_classify_entry_claim_resource (new_v);
+
           goto expand_ok;
         }
     }
@@ -2060,9 +2096,13 @@ int vnet_classify_add_del_session (vnet_classify_main_t * cm,
   e->flags = 0;
   e->action = action;
   if (e->action == CLASSIFY_ACTION_SET_IP4_FIB_INDEX)
-    e->metadata = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, metadata);
+    e->metadata = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4,
+                                                     metadata,
+                                                     FIB_SOURCE_CLASSIFY);
   else if (e->action == CLASSIFY_ACTION_SET_IP6_FIB_INDEX)
-    e->metadata = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP6, metadata);
+    e->metadata = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP6,
+                                                     metadata,
+                                                     FIB_SOURCE_CLASSIFY);
   else
     e->metadata = 0;
 
@@ -2075,6 +2115,9 @@ int vnet_classify_add_del_session (vnet_classify_main_t * cm,
     e->key[i] &= t->mask[i];
 
   rv = vnet_classify_add_del (t, e, is_add);
+
+  vnet_classify_entry_release_resource(e);
+
   if (rv)
     return VNET_API_ERROR_NO_SUCH_ENTRY;
   return 0;