[openwrt/openwrt] qos-scripts: add ifbN device before setting the link up

[LEDE Commits]

zorun pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/23c3bab9209f984692f8206c0d97758ee223a26f

commit 23c3bab9209f984692f8206c0d97758ee223a26f
Author: Perry Melange <isprotejesvalkata at gmail.com>
AuthorDate: Mon Apr 19 11:17:10 2021 +0200

    qos-scripts: add ifbN device before setting the link up
    
    commit 50413e1ec83dedaea44558d5f37af5454156a46a replaced ifconfig
    with ip.  In order to set a link state to up, the interface needs
    to be added first.
    
    Fixes: FS#3754
    
    Signed-off-by: Perry Melange <isprotejesvalkata at gmail.com>
    [Add Fixes tag]
    Signed-off-by: Baptiste Jonglez <git at bitsofnetworks.org>
---
 package/network/config/qos-scripts/Makefile                      | 2 +-
 package/network/config/qos-scripts/files/usr/lib/qos/generate.sh | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/package/network/config/qos-scripts/Makefile b/package/network/config/qos-scripts/Makefile
index 7d282b2db5..d6e7df1467 100644
--- a/package/network/config/qos-scripts/Makefile
+++ b/package/network/config/qos-scripts/Makefile
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=qos-scripts
 PKG_VERSION:=1.3.1
-PKG_RELEASE:=2
+PKG_RELEASE:=$(AUTORELEASE)
 PKG_LICENSE:=GPL-2.0
 
 PKG_MAINTAINER:=Felix Fietkau <nbd at nbd.name>
diff --git a/package/network/config/qos-scripts/files/usr/lib/qos/generate.sh b/package/network/config/qos-scripts/files/usr/lib/qos/generate.sh
index 32f15581f8..62e7283633 100755
--- a/package/network/config/qos-scripts/files/usr/lib/qos/generate.sh
+++ b/package/network/config/qos-scripts/files/usr/lib/qos/generate.sh
@@ -326,7 +326,8 @@ start_interface() {
 			append cstr "$classnr:$prio:$avgrate:$pktsize:$pktdelay:$maxrate:$qdisc:$filter" "$N"
 		done
 		append ${prefix}q "$(tcrules)" "$N"
-		export dev_${dir}="ip link set $dev up >&- 2>&-
+		export dev_${dir}="ip link add ${dev} type ifb >&- 2>&-
+ip link set $dev up >&- 2>&-
 tc qdisc del dev $dev root >&- 2>&-
 tc qdisc add dev $dev root handle 1: hfsc default ${class_default}0
 tc class add dev $dev parent 1: classid 1:1 hfsc sc rate ${rate}kbit ul rate ${rate}kbit"