buffers: remove unused code

[vpp.git] / src / vnet / devices / af_packet / node.c

diff --git a/src/vnet/devices/af_packet/node.c b/src/vnet/devices/af_packet/node.c
index b627cfc..243a38a 100644 (file)
--- a/src/vnet/devices/af_packet/node.c
+++ b/src/vnet/devices/af_packet/node.c
@@ -29,7 +29,8 @@
 
 #include <vnet/devices/af_packet/af_packet.h>
 
-#define foreach_af_packet_input_error
+#define foreach_af_packet_input_error \
+  _(PARTIAL_PKT, "partial packet")
 
 typedef enum
 {
@@ -190,9 +191,8 @@ af_packet_device_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
   u32 frame_num = apif->rx_req->tp_frame_nr;
   u8 *block_start = apif->rx_ring + block * block_size;
   uword n_trace = vlib_get_trace_count (vm, node);
-  u32 thread_index = vlib_get_thread_index ();
-  u32 n_buffer_bytes = vlib_buffer_free_list_buffer_size (vm,
-                                                         VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
+  u32 thread_index = vm->thread_index;
+  u32 n_buffer_bytes = VLIB_BUFFER_DATA_SIZE;
   u32 min_bufs = apif->rx_req->tp_frame_size / n_buffer_bytes;
 
   if (apif->per_interface_next_index != ~0)
@@ -247,9 +247,9 @@ af_packet_device_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
                {
                  if (PREDICT_TRUE (offset == 0))
                    {
-                     clib_memcpy (vlib_buffer_get_current (b0),
-                                  (u8 *) tph + tph->tp_mac,
-                                  sizeof (ethernet_header_t));
+                     clib_memcpy_fast (vlib_buffer_get_current (b0),
+                                       (u8 *) tph + tph->tp_mac,
+                                       sizeof (ethernet_header_t));
                      ethernet_header_t *eth = vlib_buffer_get_current (b0);
                      ethernet_vlan_header_t *vlan =
                        (ethernet_vlan_header_t *) (eth + 1);
@@ -261,10 +261,10 @@ af_packet_device_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
                      bytes_copied = sizeof (ethernet_header_t);
                    }
                }
-             clib_memcpy (((u8 *) vlib_buffer_get_current (b0)) +
-                          bytes_copied + vlan_len,
-                          (u8 *) tph + tph->tp_mac + offset + bytes_copied,
-                          (bytes_to_copy - bytes_copied));
+             clib_memcpy_fast (((u8 *) vlib_buffer_get_current (b0)) +
+                               bytes_copied + vlan_len,
+                               (u8 *) tph + tph->tp_mac + offset +
+                               bytes_copied, (bytes_to_copy - bytes_copied));
 
              /* fill buffer header */
              b0->current_length = bytes_to_copy + vlan_len;
@@ -292,6 +292,21 @@ af_packet_device_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
          to_next += 1;
          n_left_to_next--;
 
+         /* drop partial packets */
+         if (PREDICT_FALSE (tph->tp_len != tph->tp_snaplen))
+           {
+             next0 = VNET_DEVICE_INPUT_NEXT_DROP;
+             first_b0->error =
+               node->errors[AF_PACKET_INPUT_ERROR_PARTIAL_PKT];
+           }
+         else
+           {
+             next0 = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
+             /* redirect if feature path enabled */
+             vnet_feature_start_device_input_x1 (apif->sw_if_index, &next0,
+                                                 first_b0);
+           }
+
          /* trace */
          VLIB_BUFFER_TRACE_TRAJECTORY_INIT (first_b0);
          if (PREDICT_FALSE (n_trace > 0))
@@ -303,12 +318,9 @@ af_packet_device_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
              tr = vlib_add_trace (vm, node, first_b0, sizeof (*tr));
              tr->next_index = next0;
              tr->hw_if_index = apif->hw_if_index;
-             clib_memcpy (&tr->tph, tph, sizeof (struct tpacket2_hdr));
+             clib_memcpy_fast (&tr->tph, tph, sizeof (struct tpacket2_hdr));
            }
 
-         /* redirect if feature path enabled */
-         vnet_feature_start_device_input_x1 (apif->sw_if_index, &next0, b0);
-
          /* enque and take next packet */
          vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
                                           n_left_to_next, first_bi0, next0);