[LARTC] Deleting a tc filter rule

[Marco Aurelio]

On 6/27/07, Martija, Ricardo V <rmartija at telcordia.com> wrote:
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> Hi,
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> I am very new to tc.  I added a filter using the following command:
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>    tc filter add dev eth0 V parent 20:0 protocol ip prio 1 handle ::128 u32
> match ip tos 0x44 0xfc flowid 20:1
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tc filter add dev eth0 V parent 20:0 protocol ip pref 1234 prio 1
handle ::128 u32 match ip tos 0x44 0xfc flowid 20:1

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> To check if the filter rule was indeed added, I run
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>    tc filter show dev eth0 parent 20:
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> This gave me the following output:
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>    filter protocol ip pref 1 u32
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>    filter protocol ip pref 1 u32 fh 800: ht divisor 1
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>    filter protocol ip pref 1 u32 fh 800::128 order 296 key ht 800 bkt 0
> flowid 20:1
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>      match 00440000/00fc0000 at 0
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> I tried deleting the filter rule that I added using:
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>    tc filter del dev eth0 pref 1 protocol ip handle 800::160
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tc filter del dev eth0 pref 1234

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> This gave me the following message:
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>    Must specify filter type when using "handle"
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> I modified the delete command, as follows:
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>    tc filter del dev eth0 pref 1 protocol ip handle 800::160 u32
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> This gave the following error message:
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>    RTNETLINK answers: Invalid argument
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> I am pretty much stumped. Can anyone tell me how I can delete a tc filter
> rule?
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> Thanks,
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> Rick
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>


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Marco Casaroli
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