Router: TP-Link TL-WR841N/ND v8 4MB ROM with 32 MB RAM
Firmware Version: OpenWrt 19.07.0-rc2
Kernel Version: 4.14.156
Latest OpenWrt 19.07.0-rc2 released version SQM shows me following error when it starts:
root@OpenWrt:~# /etc/init.d/sqm restart
SQM: Stopping SQM on eth1.1
SQM: ERROR: cmd_wrapper: tc: FAILURE (2): /usr/sbin/tc qdisc del dev eth1.1 ingress
SQM: ERROR: cmd_wrapper: tc: LAST ERROR: RTNETLINK answers: No such file or directory
SQM: ERROR: cmd_wrapper: tc: FAILURE (2): /usr/sbin/tc qdisc del dev ifb4eth1.1 root
SQM: ERROR: cmd_wrapper: tc: LAST ERROR: RTNETLINK answers: No such file or directory
SQM: Stopping SQM on pppoe-wan
SQM: ERROR: cmd_wrapper: tc: FAILURE (2): /usr/sbin/tc qdisc del dev pppoe-wan ingress
SQM: ERROR: cmd_wrapper: tc: LAST ERROR: RTNETLINK answers: Invalid argument
SQM: ERROR: cmd_wrapper: tc: FAILURE (2): /usr/sbin/tc qdisc del dev ifb4pppoe-wan root
SQM: ERROR: cmd_wrapper: tc: LAST ERROR: RTNETLINK answers: No such file or directory
SQM: Starting SQM script: layer_cake.qos on pppoe-wan, in: 0 Kbps, out: 4900 Kbps
SQM: Using generic sqm_start_default function.
SQM: layer_cake.qos was started on pppoe-wan successfully
SQM: Starting SQM script: layer_cake.qos on eth1.1, in: 0 Kbps, out: 9800 Kbps
SQM: Using generic sqm_start_default function.
SQM: layer_cake.qos was started on eth1.1 successfully
SQM file:
config queue 'eth1'
option download '0'
option debug_logging '0'
option verbosity '5'
option qdisc 'cake'
option script 'layer_cake.qos'
option qdisc_advanced '1'
option ingress_ecn 'NOECN'
option egress_ecn 'NOECN'
option qdisc_really_really_advanced '1'
option iqdisc_opts 'diffserv8 nat dual-dsthost'
option linklayer 'ethernet'
option interface 'pppoe-wan'
option upload '4900'
option enabled '1'
option overhead '30'
option eqdisc_opts 'diffserv8 nat dual-srchost ack-filter'
option squash_ingress '1'
option squash_dscp '0'
config queue
option debug_logging '0'
option verbosity '5'
option download '0'
option qdisc 'cake'
option script 'layer_cake.qos'
option qdisc_advanced '1'
option ingress_ecn 'NOECN'
option egress_ecn 'ECN'
option qdisc_really_really_advanced '1'
option iqdisc_opts 'diffserv8 nat dual-srchost'
option linklayer 'ethernet'
option upload '9800'
option enabled '1'
option interface 'eth1.1'
option overhead '30'
option eqdisc_opts 'diffserv8 nat dual-dsthost ingress'
option squash_ingress '1'
option squash_dscp '0'
tc -s qdisc
qdisc noqueue 0: dev lo root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc fq_codel 0: dev eth0 root refcnt 2 limit 10240p flows 1024 quantum 1514 target 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 619152367 bytes 2722427 pkt (dropped 0, overlimits 0 requeues 4)
backlog 0b 0p requeues 4
maxpacket 1488 drop_overlimit 0 new_flow_count 23 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth1 root refcnt 2 limit 10240p flows 1024 quantum 1514 target 5.0ms interval 100.0ms memory_limit 4Mb ecn
Sent 1424083915 bytes 2370001 pkt (dropped 0, overlimits 0 requeues 3)
backlog 0b 0p requeues 3
maxpacket 1494 drop_overlimit 0 new_flow_count 10 ecn_mark 0
new_flows_len 0 old_flows_len 0
qdisc noqueue 0: dev br-lan root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc cake 8049: dev eth1.1 root refcnt 2 bandwidth 9800Kbit diffserv8 dual-dsthost nat nowash ingress no-ack-filter split-gso rtt 100.0ms noatm overhead 30
Sent 16922016 bytes 18690 pkt (dropped 1481, overlimits 24533 requeues 0)
backlog 0b 0p requeues 0
memory used: 119040b of 4Mb
capacity estimate: 9800Kbit
min/max network layer size: 40 / 1480
min/max overhead-adjusted size: 70 / 1510
average network hdr offset: 14
Tin 0 Tin 1 Tin 2 Tin 3 Tin 4 Tin 5 Tin 6 Tin 7
thresh 9800Kbit 8575Kbit 7503Kbit 6565Kbit 5744Kbit 5026Kbit 4398Kbit 3848Kbit
target 5.0ms 5.0ms 5.0ms 5.0ms 5.0ms 5.0ms 5.0ms 5.0ms
interval 100.0ms 100.0ms 100.0ms 100.0ms 100.0ms 100.0ms 100.0ms 100.0ms
pk_delay 177us 0us 7us 4.6ms 12.3ms 0us 63us 1.9ms
av_delay 25us 0us 0us 465us 2.2ms 0us 3us 370us
sp_delay 19us 0us 0us 28us 27us 0us 3us 125us
backlog 0b 0b 0b 0b 0b 0b 0b 0b
pkts 16629 0 1 3118 203 0 24 196
bytes 16971910 0 1392 1803066 182478 0 7402 94280
way_inds 0 0 0 0 0 0 0 0
way_miss 8 0 1 53 6 0 24 2
way_cols 0 0 0 0 0 0 0 0
drops 1402 0 0 78 1 0 0 0
marks 0 0 0 0 0 0 0 0
ack_drop 0 0 0 0 0 0 0 0
sp_flows 0 0 1 0 0 0 1 0
bk_flows 0 0 0 1 0 0 0 0
un_flows 0 0 0 0 0 0 0 0
max_len 1444 0 1392 1494 1392 0 519 524
quantum 300 300 300 300 300 300 300 300
qdisc cake 8046: dev pppoe-wan root refcnt 2 bandwidth 4900Kbit diffserv8 dual-srchost nat nowash ack-filter split-gso rtt 100.0ms noatm overhead 30
Sent 9727561 bytes 18419 pkt (dropped 754, overlimits 13959 requeues 0)
backlog 0b 0p requeues 0
memory used: 93Kb of 4Mb
capacity estimate: 4900Kbit
min/max network layer size: 40 / 1480
min/max overhead-adjusted size: 70 / 1510
average network hdr offset: 0
Tin 0 Tin 1 Tin 2 Tin 3 Tin 4 Tin 5 Tin 6 Tin 7
thresh 4900Kbit 4287Kbit 3751Kbit 3282Kbit 2872Kbit 2513Kbit 2199Kbit 1924Kbit
target 5.0ms 5.0ms 5.0ms 5.5ms 6.3ms 7.2ms 8.2ms 9.4ms
interval 100.0ms 100.0ms 100.0ms 100.5ms 101.3ms 102.2ms 103.2ms 104.4ms
pk_delay 16.3ms 0us 1.6ms 5.8ms 0us 0us 222us 0us
av_delay 9.3ms 0us 37us 4.0ms 0us 0us 7us 0us
sp_delay 20us 0us 36us 45us 0us 0us 7us 0us
backlog 0b 0b 0b 0b 0b 0b 0b 0b
pkts 16114 0 16 3017 0 0 26 0
bytes 9259518 0 17832 1559475 0 0 2052 0
way_inds 0 0 0 0 0 0 0 0
way_miss 8 0 5 47 0 0 26 0
way_cols 0 0 0 0 0 0 0 0
drops 688 0 0 63 0 0 0 0
marks 0 0 0 0 0 0 0 0
ack_drop 0 0 0 3 0 0 0 0
sp_flows 4 0 0 1 0 0 1 0
bk_flows 0 0 0 1 0 0 0 0
un_flows 0 0 0 0 0 0 0 0
max_len 1480 0 1378 1480 0 0 106 0
quantum 300 300 300 300 300 300 300 300
In output it shows cake works. The error only shows when I input '0' in ingress field (to selectively disable ingress shaping on both SQM instances).
In previous OpenWrt builds SQM wasn't showing any error. Is this a bug? Any idea?