bond: tx perf improvement, part trois
[vpp.git] / src / vnet / bonding / device.c
index 1ade1c2..8a78728 100644 (file)
@@ -64,6 +64,7 @@ format_bond_tx_trace (u8 * s, va_list * args)
   return s;
 }
 
+#ifndef CLIB_MARCH_VARIANT
 u8 *
 format_bond_interface_name (u8 * s, va_list * args)
 {
@@ -75,6 +76,7 @@ format_bond_interface_name (u8 * s, va_list * args)
 
   return s;
 }
+#endif
 
 static __clib_unused clib_error_t *
 bond_set_l2_mode_function (vnet_main_t * vnm,
@@ -134,29 +136,25 @@ bond_load_balance_broadcast (vlib_main_t * vm, vlib_node_runtime_t * node,
                             bond_if_t * bif, vlib_buffer_t * b0,
                             uword slave_count)
 {
-  vnet_main_t *vnm = vnet_get_main ();
+  bond_main_t *bm = &bond_main;
   vlib_buffer_t *c0;
   int port;
-  u32 *to_next = 0;
   u32 sw_if_index;
-  vlib_frame_t *f;
-  u16 thread_index = vlib_get_thread_index ();
+  u16 thread_index = vm->thread_index;
+  bond_per_thread_data_t *ptd = vec_elt_at_index (bm->per_thread_data,
+                                                 thread_index);
 
   for (port = 1; port < slave_count; port++)
     {
       sw_if_index = *vec_elt_at_index (bif->active_slaves, port);
-      if (bif->per_thread_info[thread_index].frame[port] == 0)
-       bif->per_thread_info[thread_index].frame[port] =
-         vnet_get_frame_to_sw_interface (vnm, sw_if_index);
-      f = bif->per_thread_info[thread_index].frame[port];
-      to_next = vlib_frame_vector_args (f);
-      to_next += f->n_vectors;
       c0 = vlib_buffer_copy (vm, b0);
       if (PREDICT_TRUE (c0 != 0))
        {
          vnet_buffer (c0)->sw_if_index[VLIB_TX] = sw_if_index;
-         to_next[0] = vlib_get_buffer_index (vm, c0);
-         f->n_vectors++;
+         ptd->per_port_queue[sw_if_index].buffers[ptd->per_port_queue
+                                                  [sw_if_index].n_buffers] =
+           vlib_get_buffer_index (vm, c0);
+         ptd->per_port_queue[sw_if_index].n_buffers++;
        }
     }
 
@@ -381,324 +379,349 @@ bond_load_balance_active_backup (vlib_main_t * vm,
   return 0;
 }
 
-static bond_load_balance_func_t bond_load_balance_table[] = {
-#define _(v,f,s, p) { bond_load_balance_##p },
-  foreach_bond_lb_algo
-#undef _
-};
-
-static uword
-bond_tx_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
-           vlib_frame_t * frame)
+static_always_inline void
+bond_tx_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
+               vlib_frame_t * frame, bond_if_t * bif,
+               uword slave_count, u32 lb_alg)
 {
-  vnet_interface_output_runtime_t *rund = (void *) node->runtime_data;
   bond_main_t *bm = &bond_main;
-  bond_if_t *bif = pool_elt_at_index (bm->interfaces, rund->dev_instance);
-  u32 bi0, bi1, bi2, bi3;
-  vlib_buffer_t *b0, *b1, *b2, *b3;
-  u32 *from = vlib_frame_vector_args (frame);
-  u32 n_left_from;
-  ethernet_header_t *eth;
-  u32 port;
-  u32 sw_if_index, sw_if_index1, sw_if_index2, sw_if_index3;
+  vnet_main_t *vnm = vnet_get_main ();
+  u16 thread_index = vm->thread_index;
   bond_packet_trace_t *t0;
   uword n_trace = vlib_get_trace_count (vm, node);
-  u16 thread_index = vlib_get_thread_index ();
-  vnet_main_t *vnm = vnet_get_main ();
   u32 *to_next;
-  u32 sif_if_index, sif_if_index1, sif_if_index2, sif_if_index3;
   vlib_frame_t *f;
-  uword slave_count;
+  ethernet_header_t *eth;
+  vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
+  u32 *from = vlib_frame_vector_args (frame);
+  u32 n_left = frame->n_vectors;
+  u32 sw_if_index;
+  u32 port0 = 0, port1 = 0, port2 = 0, port3 = 0;
+  bond_per_thread_data_t *ptd = vec_elt_at_index (bm->per_thread_data,
+                                                 thread_index);
 
-  if (PREDICT_FALSE (bif->admin_up == 0))
+  vlib_get_buffers (vm, from, bufs, n_left);
+  b = bufs;
+  while (n_left >= 4)
     {
-      vlib_buffer_free (vm, vlib_frame_args (frame), frame->n_vectors);
-      vlib_increment_simple_counter (vnet_main.interface_main.sw_if_counters +
-                                    VNET_INTERFACE_COUNTER_DROP,
-                                    thread_index, bif->sw_if_index,
-                                    frame->n_vectors);
-      vlib_error_count (vm, node->node_index, BOND_TX_ERROR_IF_DOWN,
-                       frame->n_vectors);
-      return frame->n_vectors;
-    }
+      u32 sif_if_index0, sif_if_index1, sif_if_index2, sif_if_index3;
 
-  clib_spinlock_lock_if_init (&bif->lockp);
-  slave_count = vec_len (bif->active_slaves);
-  if (PREDICT_FALSE (slave_count == 0))
-    {
-      bi0 = from[0];
-      b0 = vlib_get_buffer (vm, bi0);
-      vlib_increment_combined_counter
-       (vnet_main.interface_main.combined_sw_if_counters
-        + VNET_INTERFACE_COUNTER_TX, thread_index, bif->sw_if_index,
-        frame->n_vectors, b0->current_length);
+      // Prefetch next iteration
+      if (n_left >= 8)
+       {
+         vlib_buffer_t **pb = b + 4;
 
-      vlib_buffer_free (vm, vlib_frame_args (frame), frame->n_vectors);
-      vlib_increment_simple_counter (vnet_main.interface_main.sw_if_counters +
-                                    VNET_INTERFACE_COUNTER_DROP,
-                                    thread_index, bif->sw_if_index,
-                                    frame->n_vectors);
-      vlib_error_count (vm, node->node_index, BOND_TX_ERROR_NO_SLAVE,
-                       frame->n_vectors);
-      clib_spinlock_unlock_if_init (&bif->lockp);
-      return frame->n_vectors;
-    }
+         vlib_prefetch_buffer_header (pb[0], LOAD);
+         vlib_prefetch_buffer_header (pb[1], LOAD);
+         vlib_prefetch_buffer_header (pb[2], LOAD);
+         vlib_prefetch_buffer_header (pb[3], LOAD);
 
-  vec_validate_aligned (bif->per_thread_info[thread_index].frame, slave_count,
-                       CLIB_CACHE_LINE_BYTES);
+         CLIB_PREFETCH (pb[0]->data, CLIB_CACHE_LINE_BYTES, LOAD);
+         CLIB_PREFETCH (pb[1]->data, CLIB_CACHE_LINE_BYTES, LOAD);
+         CLIB_PREFETCH (pb[2]->data, CLIB_CACHE_LINE_BYTES, LOAD);
+         CLIB_PREFETCH (pb[3]->data, CLIB_CACHE_LINE_BYTES, LOAD);
+       }
 
-  /* Number of buffers / pkts */
-  n_left_from = frame->n_vectors;
+      VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[0]);
+      VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[1]);
+      VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[2]);
+      VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[3]);
 
-  while (n_left_from > 0)
-    {
-      while (n_left_from >= 4)
+      if (PREDICT_TRUE (slave_count > 1))
        {
-         u32 next0 = 0, next1 = 0, next2 = 0, next3 = 0;
-         u32 port0 = 0, port1 = 0, port2 = 0, port3 = 0;
-
-         // Prefetch next iteration
-         if (n_left_from >= 8)
+         if (lb_alg == BOND_LB_L2)
            {
-             vlib_buffer_t *p4, *p5, *p6, *p7;
-
-             p4 = vlib_get_buffer (vm, from[4]);
-             p5 = vlib_get_buffer (vm, from[5]);
-             p6 = vlib_get_buffer (vm, from[6]);
-             p7 = vlib_get_buffer (vm, from[7]);
-
-             vlib_prefetch_buffer_header (p4, LOAD);
-             vlib_prefetch_buffer_header (p5, LOAD);
-             vlib_prefetch_buffer_header (p6, LOAD);
-             vlib_prefetch_buffer_header (p7, LOAD);
-
-             CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, LOAD);
-             CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, LOAD);
-             CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, LOAD);
-             CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, LOAD);
+             port0 = bond_load_balance_l2 (vm, node, bif, b[0], slave_count);
+             port1 = bond_load_balance_l2 (vm, node, bif, b[1], slave_count);
+             port2 = bond_load_balance_l2 (vm, node, bif, b[2], slave_count);
+             port3 = bond_load_balance_l2 (vm, node, bif, b[3], slave_count);
            }
-
-         bi0 = from[0];
-         bi1 = from[1];
-         bi2 = from[2];
-         bi3 = from[3];
-
-         b0 = vlib_get_buffer (vm, bi0);
-         b1 = vlib_get_buffer (vm, bi1);
-         b2 = vlib_get_buffer (vm, bi2);
-         b3 = vlib_get_buffer (vm, bi3);
-
-         VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
-         VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b1);
-         VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b2);
-         VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b3);
-
-         sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
-         sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_TX];
-         sw_if_index2 = vnet_buffer (b2)->sw_if_index[VLIB_TX];
-         sw_if_index3 = vnet_buffer (b3)->sw_if_index[VLIB_TX];
-
-         if (PREDICT_TRUE (slave_count != 1))
+         else if (lb_alg == BOND_LB_L34)
            {
-             port0 =
-               (bond_load_balance_table[bif->lb]).load_balance (vm, node,
-                                                                bif, b0,
-                                                                slave_count);
-             port1 =
-               (bond_load_balance_table[bif->lb]).load_balance (vm, node,
-                                                                bif, b1,
-                                                                slave_count);
-             port2 =
-               (bond_load_balance_table[bif->lb]).load_balance (vm, node,
-                                                                bif, b2,
-                                                                slave_count);
-             port3 =
-               (bond_load_balance_table[bif->lb]).load_balance (vm, node,
-                                                                bif, b3,
-                                                                slave_count);
+             port0 = bond_load_balance_l34 (vm, node, bif, b[0],
+                                            slave_count);
+             port1 = bond_load_balance_l34 (vm, node, bif, b[1],
+                                            slave_count);
+             port2 = bond_load_balance_l34 (vm, node, bif, b[2],
+                                            slave_count);
+             port3 = bond_load_balance_l34 (vm, node, bif, b[3],
+                                            slave_count);
            }
+         else if (lb_alg == BOND_LB_L23)
+           {
+             port0 = bond_load_balance_l23 (vm, node, bif, b[0],
+                                            slave_count);
+             port1 = bond_load_balance_l23 (vm, node, bif, b[1],
+                                            slave_count);
+             port2 = bond_load_balance_l23 (vm, node, bif, b[2],
+                                            slave_count);
+             port3 = bond_load_balance_l23 (vm, node, bif, b[3],
+                                            slave_count);
+           }
+         else if (lb_alg == BOND_LB_RR)
+           {
+             port0 = bond_load_balance_round_robin (vm, node, bif, b[0],
+                                                    slave_count);
+             port1 = bond_load_balance_round_robin (vm, node, bif, b[1],
+                                                    slave_count);
+             port2 = bond_load_balance_round_robin (vm, node, bif, b[2],
+                                                    slave_count);
+             port3 = bond_load_balance_round_robin (vm, node, bif, b[3],
+                                                    slave_count);
+           }
+         else if (lb_alg == BOND_LB_BC)
+           {
+             port0 = bond_load_balance_broadcast (vm, node, bif, b[0],
+                                                  slave_count);
+             port1 = bond_load_balance_broadcast (vm, node, bif, b[1],
+                                                  slave_count);
+             port2 = bond_load_balance_broadcast (vm, node, bif, b[2],
+                                                  slave_count);
+             port3 = bond_load_balance_broadcast (vm, node, bif, b[3],
+                                                  slave_count);
+           }
+         else if (lb_alg == BOND_LB_AB)
+           {
+             port0 = bond_load_balance_active_backup (vm, node, bif, b[0],
+                                                      slave_count);
+             port1 = bond_load_balance_active_backup (vm, node, bif, b[1],
+                                                      slave_count);
+             port2 = bond_load_balance_active_backup (vm, node, bif, b[2],
+                                                      slave_count);
+             port3 = bond_load_balance_active_backup (vm, node, bif, b[3],
+                                                      slave_count);
+           }
+         else
+           {
+             ASSERT (0);
+           }
+       }
 
-         sif_if_index = *vec_elt_at_index (bif->active_slaves, port0);
-         sif_if_index1 = *vec_elt_at_index (bif->active_slaves, port1);
-         sif_if_index2 = *vec_elt_at_index (bif->active_slaves, port2);
-         sif_if_index3 = *vec_elt_at_index (bif->active_slaves, port3);
-
-         vnet_buffer (b0)->sw_if_index[VLIB_TX] = sif_if_index;
-         vnet_buffer (b1)->sw_if_index[VLIB_TX] = sif_if_index1;
-         vnet_buffer (b2)->sw_if_index[VLIB_TX] = sif_if_index2;
-         vnet_buffer (b3)->sw_if_index[VLIB_TX] = sif_if_index3;
-
-         if (PREDICT_FALSE ((bif->per_thread_info[thread_index].frame[port0]
-                             == 0)))
-           bif->per_thread_info[thread_index].frame[port0] =
-             vnet_get_frame_to_sw_interface (vnm, sif_if_index);
-
-         if (PREDICT_FALSE ((bif->per_thread_info[thread_index].frame[port1]
-                             == 0)))
-           bif->per_thread_info[thread_index].frame[port1] =
-             vnet_get_frame_to_sw_interface (vnm, sif_if_index1);
-
-         if (PREDICT_FALSE ((bif->per_thread_info[thread_index].frame[port2]
-                             == 0)))
-           bif->per_thread_info[thread_index].frame[port2] =
-             vnet_get_frame_to_sw_interface (vnm, sif_if_index2);
-
-         if (PREDICT_FALSE ((bif->per_thread_info[thread_index].frame[port3]
-                             == 0)))
-           bif->per_thread_info[thread_index].frame[port3] =
-             vnet_get_frame_to_sw_interface (vnm, sif_if_index3);
-
-         f = bif->per_thread_info[thread_index].frame[port0];
-         to_next = vlib_frame_vector_args (f);
-         to_next += f->n_vectors;
-         to_next[0] = vlib_get_buffer_index (vm, b0);
-         f->n_vectors++;
-
-         f = bif->per_thread_info[thread_index].frame[port1];
-         to_next = vlib_frame_vector_args (f);
-         to_next += f->n_vectors;
-         to_next[0] = vlib_get_buffer_index (vm, b1);
-         f->n_vectors++;
-
-         f = bif->per_thread_info[thread_index].frame[port2];
-         to_next = vlib_frame_vector_args (f);
-         to_next += f->n_vectors;
-         to_next[0] = vlib_get_buffer_index (vm, b2);
-         f->n_vectors++;
-
-         f = bif->per_thread_info[thread_index].frame[port3];
-         to_next = vlib_frame_vector_args (f);
-         to_next += f->n_vectors;
-         to_next[0] = vlib_get_buffer_index (vm, b3);
-         f->n_vectors++;
+      sif_if_index0 = *vec_elt_at_index (bif->active_slaves, port0);
+      sif_if_index1 = *vec_elt_at_index (bif->active_slaves, port1);
+      sif_if_index2 = *vec_elt_at_index (bif->active_slaves, port2);
+      sif_if_index3 = *vec_elt_at_index (bif->active_slaves, port3);
 
-         if (PREDICT_FALSE (n_trace > 0))
+      /* Do the tracing before the interface is overwritten */
+      if (PREDICT_FALSE (n_trace > 0))
+       {
+         u32 next0 = 0, next1 = 0, next2 = 0, next3 = 0;
+         vlib_trace_buffer (vm, node, next0, b[0], 0 /* follow_chain */ );
+         vlib_set_trace_count (vm, node, --n_trace);
+         t0 = vlib_add_trace (vm, node, b[0], sizeof (*t0));
+         eth = (ethernet_header_t *) vlib_buffer_get_current (b[0]);
+         t0->ethernet = *eth;
+         t0->sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
+         t0->bond_sw_if_index = sif_if_index0;
+
+         if (PREDICT_TRUE (n_trace > 0))
            {
-             vlib_trace_buffer (vm, node, next0, b0, 0 /* follow_chain */ );
+             vlib_trace_buffer (vm, node, next1, b[1],
+                                0 /* follow_chain */ );
              vlib_set_trace_count (vm, node, --n_trace);
-             t0 = vlib_add_trace (vm, node, b0, sizeof (*t0));
-             eth = (ethernet_header_t *) vlib_buffer_get_current (b0);
+             t0 = vlib_add_trace (vm, node, b[1], sizeof (*t0));
+             eth = (ethernet_header_t *) vlib_buffer_get_current (b[1]);
              t0->ethernet = *eth;
-             t0->sw_if_index = sw_if_index;
-             t0->bond_sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+             t0->sw_if_index = vnet_buffer (b[1])->sw_if_index[VLIB_TX];
+             t0->bond_sw_if_index = sif_if_index1;
 
              if (PREDICT_TRUE (n_trace > 0))
                {
-                 vlib_trace_buffer (vm, node, next1, b1,
+                 vlib_trace_buffer (vm, node, next2, b[2],
                                     0 /* follow_chain */ );
                  vlib_set_trace_count (vm, node, --n_trace);
-                 t0 = vlib_add_trace (vm, node, b1, sizeof (*t0));
-                 eth = (ethernet_header_t *) vlib_buffer_get_current (b1);
+                 t0 = vlib_add_trace (vm, node, b[2], sizeof (*t0));
+                 eth = (ethernet_header_t *) vlib_buffer_get_current (b[2]);
                  t0->ethernet = *eth;
-                 t0->sw_if_index = sw_if_index1;
-                 t0->bond_sw_if_index =
-                   vnet_buffer (b1)->sw_if_index[VLIB_TX];
+                 t0->sw_if_index = vnet_buffer (b[2])->sw_if_index[VLIB_TX];
+                 t0->bond_sw_if_index = sif_if_index2;
 
                  if (PREDICT_TRUE (n_trace > 0))
                    {
-                     vlib_trace_buffer (vm, node, next2, b2,
+                     vlib_trace_buffer (vm, node, next3, b[3],
                                         0 /* follow_chain */ );
                      vlib_set_trace_count (vm, node, --n_trace);
-                     t0 = vlib_add_trace (vm, node, b2, sizeof (*t0));
+                     t0 = vlib_add_trace (vm, node, b[3], sizeof (*t0));
                      eth =
-                       (ethernet_header_t *) vlib_buffer_get_current (b2);
+                       (ethernet_header_t *) vlib_buffer_get_current (b[3]);
                      t0->ethernet = *eth;
-                     t0->sw_if_index = sw_if_index2;
-                     t0->bond_sw_if_index =
-                       vnet_buffer (b2)->sw_if_index[VLIB_TX];
-
-                     if (PREDICT_TRUE (n_trace > 0))
-                       {
-                         vlib_trace_buffer (vm, node, next3, b3,
-                                            0 /* follow_chain */ );
-                         vlib_set_trace_count (vm, node, --n_trace);
-                         t0 = vlib_add_trace (vm, node, b3, sizeof (*t0));
-                         eth =
-                           (ethernet_header_t *)
-                           vlib_buffer_get_current (b3);
-                         t0->ethernet = *eth;
-                         t0->sw_if_index = sw_if_index3;
-                         t0->bond_sw_if_index =
-                           vnet_buffer (b3)->sw_if_index[VLIB_TX];
-                       }
+                     t0->sw_if_index =
+                       vnet_buffer (b[3])->sw_if_index[VLIB_TX];
+                     t0->bond_sw_if_index = sif_if_index3;
                    }
                }
            }
-         from += 4;
-         n_left_from -= 4;
        }
 
-      while (n_left_from > 0)
-       {
-         u32 next0 = 0;
-         u32 port0 = 0;
-
-         // Prefetch next iteration
-         if (n_left_from > 1)
-           {
-             vlib_buffer_t *p2;
+      vnet_buffer (b[0])->sw_if_index[VLIB_TX] = sif_if_index0;
+      vnet_buffer (b[1])->sw_if_index[VLIB_TX] = sif_if_index1;
+      vnet_buffer (b[2])->sw_if_index[VLIB_TX] = sif_if_index2;
+      vnet_buffer (b[3])->sw_if_index[VLIB_TX] = sif_if_index3;
+
+      ptd->per_port_queue[sif_if_index0].buffers[ptd->per_port_queue
+                                                [sif_if_index0].n_buffers] =
+       vlib_get_buffer_index (vm, b[0]);
+      ptd->per_port_queue[sif_if_index0].n_buffers++;
+
+      ptd->per_port_queue[sif_if_index1].buffers[ptd->per_port_queue
+                                                [sif_if_index1].n_buffers] =
+       vlib_get_buffer_index (vm, b[1]);
+      ptd->per_port_queue[sif_if_index1].n_buffers++;
+
+      ptd->per_port_queue[sif_if_index2].buffers[ptd->per_port_queue
+                                                [sif_if_index2].n_buffers] =
+       vlib_get_buffer_index (vm, b[2]);
+      ptd->per_port_queue[sif_if_index2].n_buffers++;
+
+      ptd->per_port_queue[sif_if_index3].buffers[ptd->per_port_queue
+                                                [sif_if_index3].n_buffers] =
+       vlib_get_buffer_index (vm, b[3]);
+      ptd->per_port_queue[sif_if_index3].n_buffers++;
+
+      n_left -= 4;
+      b += 4;
+    }
 
-             p2 = vlib_get_buffer (vm, from[1]);
-             vlib_prefetch_buffer_header (p2, LOAD);
-             CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, LOAD);
-           }
+  while (n_left > 0)
+    {
+      u32 sif_if_index0;
 
-         bi0 = from[0];
-         b0 = vlib_get_buffer (vm, bi0);
-
-         VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
-
-         sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
-
-         if (PREDICT_TRUE (slave_count != 1))
-           port0 =
-             (bond_load_balance_table[bif->lb]).load_balance (vm, node, bif,
-                                                              b0,
-                                                              slave_count);
-         sif_if_index = *vec_elt_at_index (bif->active_slaves, port0);
-         vnet_buffer (b0)->sw_if_index[VLIB_TX] = sif_if_index;
-         if (PREDICT_FALSE
-             ((bif->per_thread_info[thread_index].frame[port0] == 0)))
-           bif->per_thread_info[thread_index].frame[port0] =
-             vnet_get_frame_to_sw_interface (vnm, sif_if_index);
-         f = bif->per_thread_info[thread_index].frame[port0];
-         to_next = vlib_frame_vector_args (f);
-         to_next += f->n_vectors;
-         to_next[0] = vlib_get_buffer_index (vm, b0);
-         f->n_vectors++;
+      VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[0]);
 
-         if (PREDICT_FALSE (n_trace > 0))
+      if (PREDICT_TRUE (slave_count > 1))
+       {
+         if (bif->lb == BOND_LB_L2)
            {
-             vlib_trace_buffer (vm, node, next0, b0, 0 /* follow_chain */ );
-             vlib_set_trace_count (vm, node, --n_trace);
-             t0 = vlib_add_trace (vm, node, b0, sizeof (*t0));
-             eth = (ethernet_header_t *) vlib_buffer_get_current (b0);
-             t0->ethernet = *eth;
-             t0->sw_if_index = sw_if_index;
-             t0->bond_sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+             port0 = bond_load_balance_l2 (vm, node, bif, b[0], slave_count);
+           }
+         else if (bif->lb == BOND_LB_L34)
+           {
+             port0 = bond_load_balance_l34 (vm, node, bif, b[0],
+                                            slave_count);
+           }
+         else if (bif->lb == BOND_LB_L23)
+           {
+             port0 = bond_load_balance_l23 (vm, node, bif, b[0],
+                                            slave_count);
+           }
+         else if (bif->lb == BOND_LB_RR)
+           {
+             port0 = bond_load_balance_round_robin (vm, node, bif, b[0],
+                                                    slave_count);
+           }
+         else if (bif->lb == BOND_LB_BC)
+           {
+             port0 = bond_load_balance_broadcast (vm, node, bif, b[0],
+                                                  slave_count);
            }
+         else if (bif->lb == BOND_LB_AB)
+           {
+             port0 = bond_load_balance_active_backup (vm, node, bif, b[0],
+                                                      slave_count);
+           }
+         else
+           {
+             ASSERT (0);
+           }
+       }
+
+      sif_if_index0 = *vec_elt_at_index (bif->active_slaves, port0);
+
+      /* Do the tracing before the old interface is overwritten */
+      if (PREDICT_FALSE (n_trace > 0))
+       {
+         u32 next0 = 0;
 
-         from += 1;
-         n_left_from -= 1;
+         vlib_trace_buffer (vm, node, next0, b[0], 0 /* follow_chain */ );
+         vlib_set_trace_count (vm, node, --n_trace);
+         t0 = vlib_add_trace (vm, node, b[0], sizeof (*t0));
+         eth = (ethernet_header_t *) vlib_buffer_get_current (b[0]);
+         t0->ethernet = *eth;
+         t0->sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
+         t0->bond_sw_if_index = sif_if_index0;
        }
+
+      vnet_buffer (b[0])->sw_if_index[VLIB_TX] = sif_if_index0;
+
+      ptd->per_port_queue[sif_if_index0].buffers[ptd->per_port_queue
+                                                [sif_if_index0].n_buffers] =
+       vlib_get_buffer_index (vm, b[0]);
+      ptd->per_port_queue[sif_if_index0].n_buffers++;
+
+      n_left -= 1;
+      b += 1;
     }
 
-  for (port = 0; port < slave_count; port++)
+  for (port0 = 0; port0 < slave_count; port0++)
     {
-      f = bif->per_thread_info[thread_index].frame[port];
-      if (f == 0)
-       continue;
-
-      sw_if_index = *vec_elt_at_index (bif->active_slaves, port);
-      vnet_put_frame_to_sw_interface (vnm, sw_if_index, f);
-      bif->per_thread_info[thread_index].frame[port] = 0;
+      sw_if_index = *vec_elt_at_index (bif->active_slaves, port0);
+      if (PREDICT_TRUE (ptd->per_port_queue[sw_if_index].n_buffers))
+       {
+         f = vnet_get_frame_to_sw_interface (vnm, sw_if_index);
+         f->n_vectors = ptd->per_port_queue[sw_if_index].n_buffers;
+         to_next = vlib_frame_vector_args (f);
+         clib_memcpy (to_next, ptd->per_port_queue[sw_if_index].buffers,
+                      f->n_vectors << 2);
+         vnet_put_frame_to_sw_interface (vnm, sw_if_index, f);
+         ptd->per_port_queue[sw_if_index].n_buffers = 0;
+       }
     }
 
   vlib_increment_simple_counter (vnet_main.interface_main.sw_if_counters
                                 + VNET_INTERFACE_COUNTER_TX, thread_index,
                                 bif->sw_if_index, frame->n_vectors);
+}
+
+VNET_DEVICE_CLASS_TX_FN (bond_dev_class) (vlib_main_t * vm,
+                                         vlib_node_runtime_t * node,
+                                         vlib_frame_t * frame)
+{
+  vnet_interface_output_runtime_t *rund = (void *) node->runtime_data;
+  bond_main_t *bm = &bond_main;
+  u16 thread_index = vm->thread_index;
+  bond_if_t *bif = pool_elt_at_index (bm->interfaces, rund->dev_instance);
+  uword slave_count;
+
+  if (PREDICT_FALSE (bif->admin_up == 0))
+    {
+      vlib_buffer_free (vm, vlib_frame_args (frame), frame->n_vectors);
+      vlib_increment_simple_counter (vnet_main.interface_main.sw_if_counters +
+                                    VNET_INTERFACE_COUNTER_DROP,
+                                    thread_index, bif->sw_if_index,
+                                    frame->n_vectors);
+      vlib_error_count (vm, node->node_index, BOND_TX_ERROR_IF_DOWN,
+                       frame->n_vectors);
+      return frame->n_vectors;
+    }
+
+  slave_count = vec_len (bif->active_slaves);
+  if (PREDICT_FALSE (slave_count == 0))
+    {
+      vlib_buffer_free (vm, vlib_frame_args (frame), frame->n_vectors);
+      vlib_increment_simple_counter (vnet_main.interface_main.sw_if_counters +
+                                    VNET_INTERFACE_COUNTER_DROP,
+                                    thread_index, bif->sw_if_index,
+                                    frame->n_vectors);
+      vlib_error_count (vm, node->node_index, BOND_TX_ERROR_NO_SLAVE,
+                       frame->n_vectors);
+      return frame->n_vectors;
+    }
+
+  if (bif->lb == BOND_LB_L2)
+    bond_tx_inline (vm, node, frame, bif, slave_count, BOND_LB_L2);
+  else if (bif->lb == BOND_LB_L34)
+    bond_tx_inline (vm, node, frame, bif, slave_count, BOND_LB_L34);
+  else if (bif->lb == BOND_LB_L23)
+    bond_tx_inline (vm, node, frame, bif, slave_count, BOND_LB_L23);
+  else if (bif->lb == BOND_LB_RR)
+    bond_tx_inline (vm, node, frame, bif, slave_count, BOND_LB_RR);
+  else if (bif->lb == BOND_LB_BC)
+    bond_tx_inline (vm, node, frame, bif, slave_count, BOND_LB_BC);
+  else if (bif->lb == BOND_LB_AB)
+    bond_tx_inline (vm, node, frame, bif, slave_count, BOND_LB_AB);
+  else
+    ASSERT (0);
 
-  clib_spinlock_unlock_if_init (&bif->lockp);
   return frame->n_vectors;
 }
 
@@ -751,7 +774,6 @@ VLIB_REGISTER_NODE (bond_process_node) = {
 /* *INDENT-OFF* */
 VNET_DEVICE_CLASS (bond_dev_class) = {
   .name = "bond",
-  .tx_function = bond_tx_fn,
   .tx_function_n_errors = BOND_TX_N_ERROR,
   .tx_function_error_strings = bond_tx_error_strings,
   .format_device_name = format_bond_interface_name,
@@ -761,7 +783,6 @@ VNET_DEVICE_CLASS (bond_dev_class) = {
   .format_tx_trace = format_bond_tx_trace,
 };
 
-VLIB_DEVICE_TX_FUNCTION_MULTIARCH (bond_dev_class, bond_tx_fn)
 /* *INDENT-ON* */
 
 /*