Hi,
I am running Openwrt 21.02.0 on a dual cellular router. This has two active cellular (LTE) interfaces.
Default qdisc is fq_codel on the cellular WAN interfaces (wwan0/1).
I would like to monitor the cellular interfaces for the following:
- Transmit queue length
- Transmit queue drops
- Congestion information
- Received queue length
- ..
I checked with tc the stats but these do not give any congestion or packet drop information. The drop field does not update even though I am saturating the uplink and received dropped packets on my application:
# tc -s qdisc show dev wwan1
qdisc fq_codel 0: root refcnt 2 limit 10240p flows 1024 quantum 1380 target 5ms interval 100ms memory_limit 4Mb ecn drop_batch 64
Sent 23128084256 bytes 67484798 pkt (**dropped 69**, overlimits 0 requeues 133)
backlog 0b 0p requeues 133
maxpacket 4080 drop_overlimit 0 new_flow_count 2386 ecn_mark 0
new_flows_len 0 old_flows_len 0
Is there a way to get this kind of network queue information from the wwan0/wwan1 interface in OpenWRT?
Best,
S