Line data    Source code

       1             : /*
       2             :  * Copyright (c) 2015 Cisco and/or its affiliates.
       3             :  * Licensed under the Apache License, Version 2.0 (the "License");
       4             :  * you may not use this file except in compliance with the License.
       5             :  * You may obtain a copy of the License at:
       6             :  *
       7             :  *     http://www.apache.org/licenses/LICENSE-2.0
       8             :  *
       9             :  * Unless required by applicable law or agreed to in writing, software
      10             :  * distributed under the License is distributed on an "AS IS" BASIS,
      11             :  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      12             :  * See the License for the specific language governing permissions and
      13             :  * limitations under the License.
      14             :  */
      15             : 
      16             : #include <vnet/vnet.h>
      17             : #include <vnet/devices/devices.h>
      18             : #include <vnet/feature/feature.h>
      19             : #include <vnet/ip/ip.h>
      20             : #include <vnet/ethernet/ethernet.h>
      21             : #include <vlib/stats/stats.h>
      22             : 
      23             : vnet_device_main_t vnet_device_main;
      24             : 
      25             : static uword
      26           0 : device_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
      27             :                  vlib_frame_t * frame)
      28             : {
      29           0 :   return 0;
      30             : }
      31             : 
      32             : /* *INDENT-OFF* */
      33      183788 : VLIB_REGISTER_NODE (device_input_node) = {
      34             :   .function = device_input_fn,
      35             :   .name = "device-input",
      36             :   .runtime_data_bytes = sizeof (vnet_hw_if_rx_node_runtime_t),
      37             :   .type = VLIB_NODE_TYPE_INPUT,
      38             :   .state = VLIB_NODE_STATE_DISABLED,
      39             :   .n_next_nodes = VNET_DEVICE_INPUT_N_NEXT_NODES,
      40             :   .next_nodes = VNET_DEVICE_INPUT_NEXT_NODES,
      41             : };
      42             : 
      43        1151 : VNET_FEATURE_ARC_INIT (device_input, static) =
      44             : {
      45             :   .arc_name  = "device-input",
      46             :   .start_nodes = VNET_FEATURES ("device-input"),
      47             :   .last_in_arc = "ethernet-input",
      48             :   .arc_index_ptr = &feature_main.device_input_feature_arc_index,
      49             : };
      50             : 
      51       76635 : VNET_FEATURE_INIT (l2_patch, static) = {
      52             :   .arc_name = "device-input",
      53             :   .node_name = "l2-patch",
      54             :   .runs_before = VNET_FEATURES ("ethernet-input"),
      55             : };
      56             : 
      57       76635 : VNET_FEATURE_INIT (worker_handoff, static) = {
      58             :   .arc_name = "device-input",
      59             :   .node_name = "worker-handoff",
      60             :   .runs_before = VNET_FEATURES ("ethernet-input"),
      61             : };
      62             : 
      63       76635 : VNET_FEATURE_INIT (span_input, static) = {
      64             :   .arc_name = "device-input",
      65             :   .node_name = "span-input",
      66             :   .runs_before = VNET_FEATURES ("ethernet-input"),
      67             : };
      68             : 
      69       76635 : VNET_FEATURE_INIT (p2p_ethernet_node, static) = {
      70             :   .arc_name = "device-input",
      71             :   .node_name = "p2p-ethernet-input",
      72             :   .runs_before = VNET_FEATURES ("ethernet-input"),
      73             : };
      74             : 
      75       76635 : VNET_FEATURE_INIT (ethernet_input, static) = {
      76             :   .arc_name = "device-input",
      77             :   .node_name = "ethernet-input",
      78             :   .runs_before = 0, /* not before any other features */
      79             : };
      80             : /* *INDENT-ON* */
      81             : 
      82             : static void
      83        1256 : input_rate_collector_fn (vlib_stats_collector_data_t *d)
      84             : {
      85        1256 :   vlib_stats_segment_t *sm = vlib_stats_get_segment ();
      86        1256 :   vlib_stats_entry_t *e2 = sm->directory_vector + d->private_data;
      87             :   static u64 last_input_packets = 0;
      88             :   f64 dt, now;
      89             : 
      90        1256 :   now = vlib_time_now (vlib_get_main ());
      91        1256 :   u64 input_packets = vnet_get_aggregate_rx_packets ();
      92             : 
      93        1256 :   dt = now - e2->value;
      94        1256 :   d->entry->value = (f64) (input_packets - last_input_packets) / dt;
      95        1256 :   last_input_packets = input_packets;
      96        1256 :   e2->value = now;
      97        1256 : }
      98             : 
      99             : static clib_error_t *
     100         575 : vnet_device_init (vlib_main_t * vm)
     101             : {
     102         575 :   vnet_device_main_t *vdm = &vnet_device_main;
     103         575 :   vlib_thread_main_t *tm = vlib_get_thread_main ();
     104             :   vlib_thread_registration_t *tr;
     105         575 :   vlib_stats_collector_reg_t reg = {};
     106             :   uword *p;
     107             : 
     108         575 :   vec_validate_aligned (vdm->workers, tm->n_vlib_mains - 1,
     109             :                         CLIB_CACHE_LINE_BYTES);
     110             : 
     111         575 :   p = hash_get_mem (tm->thread_registrations_by_name, "workers");
     112         575 :   tr = p ? (vlib_thread_registration_t *) p[0] : 0;
     113         575 :   if (tr && tr->count > 0)
     114             :     {
     115          37 :       vdm->first_worker_thread_index = tr->first_index;
     116          37 :       vdm->next_worker_thread_index = tr->first_index;
     117          37 :       vdm->last_worker_thread_index = tr->first_index + tr->count - 1;
     118             :     }
     119             : 
     120         575 :   reg.private_data = vlib_stats_add_timestamp ("/sys/last_update");
     121         575 :   reg.entry_index = vlib_stats_add_gauge ("/sys/input_rate");
     122         575 :   reg.collect_fn = input_rate_collector_fn;
     123         575 :   vlib_stats_register_collector_fn (&reg);
     124             : 
     125         575 :   return 0;
     126             : }
     127             : 
     128        8639 : VLIB_INIT_FUNCTION (vnet_device_init);
     129             : 
     130             : /*
     131             :  * fd.io coding-style-patch-verification: ON
     132             :  *
     133             :  * Local Variables:
     134             :  * eval: (c-set-style "gnu")
     135             :  * End:
     136             :  */