From fd2417b2a42e34062e3d07875e5c4e11922513d5 Mon Sep 17 00:00:00 2001
From: Neale Ranns <neale@graphiant.com>
Date: Fri, 16 Jul 2021 14:00:16 +0000
Subject: ip-neighbor: ARP and ND stats per-interface.

Type: feature

stats of the like from:
  https://datatracker.ietf.org/doc/html/draft-ietf-rtgwg-arp-yang-model-03#section-4

Signed-off-by: Neale Ranns <neale@graphiant.com>
Change-Id: Icb1bf4f6f7e6ccc2f44b0008d4774b61cae96184
---
 src/vnet/arp/arp.c | 22 ++++++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

(limited to 'src/vnet/arp/arp.c')

diff --git a/src/vnet/arp/arp.c b/src/vnet/arp/arp.c
index a2292f1c922..5765101701d 100644
--- a/src/vnet/arp/arp.c
+++ b/src/vnet/arp/arp.c
@@ -25,6 +25,7 @@
 #include <vnet/pg/pg.h>
 
 #include <vnet/ip-neighbor/ip_neighbor.h>
+#include <vnet/ip-neighbor/ip4_neighbor.h>
 #include <vnet/ip-neighbor/ip_neighbor_dp.h>
 
 #include <vlibmemory/api.h>
@@ -565,8 +566,14 @@ arp_reply (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
 		error0 = ETHERNET_ARP_ERROR_l3_dst_address_not_local;
 	      else if (arp0->ip4_over_ethernet[0].ip4.as_u32 ==
 		       arp0->ip4_over_ethernet[1].ip4.as_u32)
-		error0 = arp_learn (sw_if_index0,
-				    &arp0->ip4_over_ethernet[0]);
+		{
+		  vlib_increment_simple_counter (
+		    &ip_neighbor_counters[AF_IP4]
+		       .ipnc[VLIB_RX][IP_NEIGHBOR_CTR_GRAT],
+		    vm->thread_index, sw_if_index0, 1);
+		  error0 =
+		    arp_learn (sw_if_index0, &arp0->ip4_over_ethernet[0]);
+		}
 	      goto drop;
 	    case ARP_DST_FIB_CONN:
 	      /* destination is connected, continue to process */
@@ -600,6 +607,14 @@ arp_reply (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
 	      goto drop;
 	    }
 
+	  vlib_increment_simple_counter (
+	    &ip_neighbor_counters[AF_IP4]
+	       .ipnc[VLIB_RX][arp0->opcode == clib_host_to_net_u16 (
+						ETHERNET_ARP_OPCODE_reply) ?
+				      IP_NEIGHBOR_CTR_REPLY :
+				      IP_NEIGHBOR_CTR_REQUEST],
+	    vm->thread_index, sw_if_index0, 1);
+
 	  /* Learn or update sender's mapping only for replies to addresses
 	   * that are local to the subnet */
 	  if (arp0->opcode ==
@@ -653,6 +668,9 @@ arp_reply (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
 	  if (!error0)
 	    error0 = arp_learn (sw_if_index0, &arp0->ip4_over_ethernet[1]);
 
+	  vlib_increment_simple_counter (
+	    &ip_neighbor_counters[AF_IP4].ipnc[VLIB_TX][IP_NEIGHBOR_CTR_REPLY],
+	    vm->thread_index, sw_if_index0, 1);
 	  n_replies_sent += 1;
 	  goto enqueue;
 
-- 
cgit 1.2.3-korg