From 0237bd131a01609f5bdb92d6a4fd21fd2e939ae6 Mon Sep 17 00:00:00 2001
From: h0nIg <h0nIg@users.noreply.github.com>
Date: Fri, 11 Oct 2024 13:27:16 +0200
Subject: [PATCH] add problem hint

Signed-off-by: h0nIg <h0nIg@users.noreply.github.com>
---
 plugins/meta/bandwidth/ifb_creator.go | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/plugins/meta/bandwidth/ifb_creator.go b/plugins/meta/bandwidth/ifb_creator.go
index 58d76add9..604b42db2 100644
--- a/plugins/meta/bandwidth/ifb_creator.go
+++ b/plugins/meta/bandwidth/ifb_creator.go
@@ -27,11 +27,14 @@ import (
 const latencyInMillis = 25
 
 func CreateIfb(ifbDeviceName string, mtu int) error {
+	// do not set TxQLen > 0 nor TxQLen == -1 until issues have been fixed with numrxqueues / numtxqueues across interfaces
+	// which needs to get set on IFB devices via upstream library: see hint https://github.com/containernetworking/plugins/pull/1097
 	err := netlink.LinkAdd(&netlink.Ifb{
 		LinkAttrs: netlink.LinkAttrs{
-			Name:  ifbDeviceName,
-			Flags: net.FlagUp,
-			MTU:   mtu,
+			Name:   ifbDeviceName,
+			Flags:  net.FlagUp,
+			MTU:    mtu,
+			TxQLen: 0,
 		},
 	})
 	if err != nil {