buffer information

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Sep 21st, 2008
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can anyone tell me whats the given packet means. I got the logs after debug sanity command.

Buffer information for Small buffer at 0xD809340

data_area 0x789AD184, refcount 0, next 0xD13D8B8, flags 0x0

linktype 0 (None), enctype 0 (None), encsize 14, rxtype 1

if_input 0x0 (None), if_output 0x0 (None)

inputtime 1d09h (elapsed 00:00:00.320)

outputtime 1d09h (elapsed 00:00:18.580), oqnumber 65535

datagramstart 0x789AD1CA, datagramsize 62, maximum size 260

mac_start 0x789AD1CA, addr_start 0x789AD1CA, info_start 0x0

network_start 0x789AD1D8, transport_start 0x789AD1EC, caller_pc 0x29596C



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Giuseppe Larosa Fri, 09/26/2008 - 12:57
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Hello Shivlu,

I didn't find a reference for debug sanity in the command lookup tool.

However, my guess is the following:

this output is related to a small buffer system buffer.

the packet is simply holded there for some time :

inputtime 1d09h (elapsed 00:00:00.320)

outputtime 1d09h (elapsed 00:00:18.580)

the packet is 62 byte in size.

no info about the physical interface is available :

if_input 0x0 (None), if_output 0x0 (None)

and the packet is without a L2 encapsulation :enctype 0 (None)

the packet was probably held for 18 msec before being sent to the cpu for process switching.

be aware that the "packet" could also be the first 62 bytes of a longer packet sent to to the system buffers before it needed to be process switched.

This is platform dependent.

Hope to help



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