[Bug 12791] New: tc options don't work as expected
bugzilla at busybox.net
bugzilla at busybox.net
Tue Apr 21 20:16:44 UTC 2020
https://bugs.busybox.net/show_bug.cgi?id=12791
Bug ID: 12791
Summary: tc options don't work as expected
Product: Busybox
Version: 1.31.x
Hardware: Other
OS: Other
Status: NEW
Severity: normal
Priority: P5
Component: Networking
Assignee: unassigned at busybox.net
Reporter: tom at nthsense.net
CC: busybox-cvs at busybox.net
Target Milestone: ---
I am running the
https://busybox.net/downloads/binaries/1.31.0-defconfig-multiarch-musl/busybox-armv8l
on an Android device (Android 7.1.1 and kernel 3.18), and I can't get much of
`tc` to work. `tc qdisc show` works as expected, but if I run
`/system/bin/busybox-armv8l tc qdisc show dev eth0` I get the error:
`tc: invalid argument '_=/system/bin/busybox-armv8l' to 'command'`
I have also tried creating a link to the binary as shown on
https://busybox.net/downloads/BusyBox.html under usage. The result was the
same.
Attempting to add some delay via Netem with `/system/bin/busybox-armv8l tc
qdisc add dev eth0 root netem delay 3ms` results in `tc: invalid argument
'netem' to 'command'`. Similarly, an attempt to use a token buffer filter like
`tc qdisc add dev eth0 root tbf rate 256kbit buffer 1600 limit 3000` resulted
in `tc: invalid argument 'tbf' to 'command'`. Trying to delete a qdisc like
`tc qdisc del dev eth0 root` results in `tc: command line is not complete, try
"help"`. These are all standard tc commands.
As the help shows, usage is tc OBJECT CMD [dev STRING]... in the "delete"
example above, the OBJECT is qdisc, the CMD is del, and the dev string is dev
eth0 root.
I think maybe I'm missing something fundamental, but not sure what it could be.
Thanks!!
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