Re: bps helper functions


Yonghong Song
 

Ashish,

Some comments below.

On Sat, Apr 7, 2018 at 1:44 PM, riya khanna <riyakhanna1983@...> wrote:
<ping>

On Mon, Apr 2, 2018 at 1:30 PM, riya khanna <riyakhanna1983@...>
wrote:

Oh its simply to inspect/filter/drop a compressed application packet in
the kernel without incurring network stack processing.
Could you have more details here? Maybe have a skeleton of bpf program
to at least see how this helper will be used? A lot of compression
happens in the application
and kernel chops them into TCP stream. Or you are talking IPcomp protocol?
I am not sure how bpf program could do decompression based on a single packet.
Further, do we need todecompress the whole packet or on ly part of the packet?

Yonghong


On Mon, Apr 2, 2018 at 11:36 AM, Y Song <ys114321@...> wrote:

Hi, Ashish,

It seems that this has not been actively discussed before. Could you
describe your use case?

Thanks!

Yonghong

On Mon, Apr 2, 2018 at 8:11 AM, riya khanna via iovisor-dev
<iovisor-dev@...> wrote:
Dear developers,

Is it a good idea to export kernel compression/decompression
(lib/zlib_*,
lib/lz*) as helper functions to enable corresponding use cases? Has
this
been tried before?

Thanks,
Ashish

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