Add per endpoint ARP statistics

The ARP stat NetworkUnreachable was removed, and was replaced by
InterfaceHasNoLocalAddress. No stats are recorded when dealing with an
missing endpoint (ErrNotConnected) (because if there is no endpoint,
there is no valid per-endpoint stats).

PiperOrigin-RevId: 353759462

1 files changed, 4 insertions, 4 deletions

diff --git a/pkg/tcpip/tcpip.go b/pkg/tcpip/tcpip.go
index fe01029ad..32e4f02ca 100644
--- a/pkg/tcpip/tcpip.go
+++ b/pkg/tcpip/tcpip.go
@@ -1667,6 +1667,8 @@ type IPStats struct {
 
 // ARPStats collects ARP-specific stats.
 type ARPStats struct {
+	// LINT.IfChange(ARPStats)
+
 	// PacketsReceived is the number of ARP packets received from the link layer.
 	PacketsReceived *StatCounter
 
@@ -1694,10 +1696,6 @@ type ARPStats struct {
 	// ARP request with a bad local address.
 	OutgoingRequestBadLocalAddressErrors *StatCounter
 
-	// OutgoingRequestNetworkUnreachableErrors is the number of failures to send
-	// an ARP request with a network unreachable error.
-	OutgoingRequestNetworkUnreachableErrors *StatCounter
-
 	// OutgoingRequestsDropped is the number of ARP requests which failed to write
 	// to a link-layer endpoint.
 	OutgoingRequestsDropped *StatCounter
@@ -1716,6 +1714,8 @@ type ARPStats struct {
 	// OutgoingRepliesSent is the number of ARP replies successfully written to a
 	// link-layer endpoint.
 	OutgoingRepliesSent *StatCounter
+
+	// LINT.ThenChange(network/arp/stats.go:multiCounterARPStats)
 }
 
 // TCPStats collects TCP-specific stats.