buffers: configurable buffer fault injector

[vpp.git] / src / vlib / buffer_node.h

diff --git a/src/vlib/buffer_node.h b/src/vlib/buffer_node.h
index 7e48878..0fa18d6 100644 (file)
--- a/src/vlib/buffer_node.h
+++ b/src/vlib/buffer_node.h
@@ -69,6 +69,8 @@
 
 #define vlib_validate_buffer_enqueue_x2(vm,node,next_index,to_next,n_left_to_next,bi0,bi1,next0,next1) \
 do {                                                                   \
+  ASSERT (bi0 != 0);                                                   \
+  ASSERT (bi1 != 0);                                                   \
   int enqueue_code = (next0 != next_index) + 2*(next1 != next_index);  \
                                                                        \
   if (PREDICT_FALSE (enqueue_code != 0))                               \
@@ -137,6 +139,10 @@ do {                                                                       \
 
 #define vlib_validate_buffer_enqueue_x4(vm,node,next_index,to_next,n_left_to_next,bi0,bi1,bi2,bi3,next0,next1,next2,next3) \
 do {                                                                    \
+  ASSERT (bi0 != 0);                                                   \
+  ASSERT (bi1 != 0);                                                   \
+  ASSERT (bi2 != 0);                                                   \
+  ASSERT (bi3 != 0);                                                   \
   /* After the fact: check the [speculative] enqueue to "next" */       \
   u32 fix_speculation = (next_index ^ next0) | (next_index ^ next1)     \
     | (next_index ^ next2) | (next_index ^ next3);                      \
@@ -217,6 +223,7 @@ do {                                                                    \
 */
 #define vlib_validate_buffer_enqueue_x1(vm,node,next_index,to_next,n_left_to_next,bi0,next0) \
 do {                                                                   \
+  ASSERT (bi0 != 0);                                                   \
   if (PREDICT_FALSE (next0 != next_index))                             \
     {                                                                  \
       vlib_put_next_frame (vm, node, next_index, n_left_to_next + 1);  \
@@ -350,17 +357,17 @@ vlib_buffer_enqueue_to_next (vlib_main_t * vm, vlib_node_runtime_t * node,
          max = clib_min (n_left_to_next, count);
        }
 #if defined(CLIB_HAVE_VEC512)
-      u16x32 next32 = u16x32_load_unaligned (nexts);
+      u16x32 next32 = CLIB_MEM_OVERFLOW_LOAD (u16x32_load_unaligned, nexts);
       next32 = (next32 == u16x32_splat (next32[0]));
       u64 bitmap = u16x32_msb_mask (next32);
       n_enqueued = count_trailing_zeros (~bitmap);
 #elif defined(CLIB_HAVE_VEC256)
-      u16x16 next16 = u16x16_load_unaligned (nexts);
+      u16x16 next16 = CLIB_MEM_OVERFLOW_LOAD (u16x16_load_unaligned, nexts);
       next16 = (next16 == u16x16_splat (next16[0]));
       u64 bitmap = u8x32_msb_mask ((u8x32) next16);
       n_enqueued = count_trailing_zeros (~bitmap) / 2;
 #elif defined(CLIB_HAVE_VEC128) && defined(CLIB_HAVE_VEC128_MSB_MASK)
-      u16x8 next8 = u16x8_load_unaligned (nexts);
+      u16x8 next8 = CLIB_MEM_OVERFLOW_LOAD (u16x8_load_unaligned, nexts);
       next8 = (next8 == u16x8_splat (next8[0]));
       u64 bitmap = u8x16_msb_mask ((u8x16) next8);
       n_enqueued = count_trailing_zeros (~bitmap) / 2;
@@ -507,7 +514,6 @@ vlib_buffer_enqueue_to_thread (vlib_main_t * vm, u32 frame_queue_index,
 
       if (next_thread_index != current_thread_index)
        {
-
          if (drop_on_congestion &&
              is_vlib_frame_queue_congested
              (frame_queue_index, next_thread_index, fqm->queue_hi_thresh,
@@ -539,6 +545,7 @@ vlib_buffer_enqueue_to_thread (vlib_main_t * vm, u32 frame_queue_index,
        {
          hf->n_vectors = VLIB_FRAME_SIZE;
          vlib_put_frame_queue_elt (hf);
+         vlib_mains[current_thread_index]->check_frame_queues = 1;
          current_thread_index = ~0;
          ptd->handoff_queue_elt_by_thread_index[next_thread_index] = 0;
          hf = 0;
@@ -567,6 +574,7 @@ vlib_buffer_enqueue_to_thread (vlib_main_t * vm, u32 frame_queue_index,
          if (1 || hf->n_vectors == hf->last_n_vectors)
            {
              vlib_put_frame_queue_elt (hf);
+             vlib_mains[i]->check_frame_queues = 1;
              ptd->handoff_queue_elt_by_thread_index[i] = 0;
            }
          else