Thanks for the great support.
The VPP platform grabs all available packets from RX rings to form a
vector of packets. These vector of packets who will classify these
packets either DPDK or VPP ?. If it is VPP how VPP will classify packet
because what I am thinking for every packet VPP is decapsulating to know
which packet actually it is, that particular packet is sent to the
respected node. By this doing this mechanism VPP is simply wasting
machine cycle. If my thinking is worng, please tell me which algorithm
is this VPP is following so that i can understand.
On Wednesday 31 May 2017 12:52 AM, Burt Silverman wrote:
Another learning possibility, Mahesh: ./build-data/platforms/vpp.mk
<http://vpp.mk>, you can uncomment vpp_enable_tests and then build
./src/vppinfra/test_longjmp.c's program. Alternatively you can set
TESTS to test_longjmp in ./src/vppinfra.am <http://vppinfra.am> and
build. Then you can run the test_longjmp program. Run it with one or
more parameters and it will print something. I don't know much else
about it. Also you might Google setjmp and longjmp -- I believe the
clib_ versions are optimized and stylized for VPP.
Burt
On Tue, May 30, 2017 at 10:02 AM, Dave Barach (dbarach)
<dbar...@cisco.com> wrote:
Please look at the clib_calljmp(...) call in src/vlib/unix/main.c.
It calls the function “thread0” on the first allocated thread
stack. All of the other calls are similar.
Thanks… Dave
*From:*Mahesh Ishwar Mathad [mailto:mi.mah...@globaledgesoft.com
<mailto:mi.mah...@globaledgesoft.com>]
*Sent:* Tuesday, May 30, 2017 9:25 AM
*To:* Dave Barach (dbarach) <dbar...@cisco.com>;
vpp-dev@lists.fd.io <mailto:vpp-dev@lists.fd.io>
*Subject:* Re: [vpp-dev] Need some help on VPP
Thank you. As you mentioned function f, could you please tell for
which function respected stack is created and what is that
function f is responsible for?
On Tuesday 30 May 2017 05:10 PM, Dave Barach (dbarach) wrote:
Longjmp.S provides setjmp/longjmp and "call a function f on a new
stack" support for multiple CPU architectures. Switching stacks involves saving,
restoring, and avoiding damage to registers. The file is written in multiple assembly
languages.
If you have specific questions, I'm willing to take a shot at answering
them. You'll need to look at instruction set reference documents and compiler
ABI documents to fully understand each implementation.
If you're not experienced with assembly language programming, I'd be
tempted to steer clear. Stipulate that the code works, and move on...
Thanks... Dave
-----Original Message-----
From:vpp-dev-boun...@lists.fd.io <mailto:vpp-dev-boun...@lists.fd.io>
[mailto:vpp-dev-boun...@lists.fd.io
<mailto:vpp-dev-boun...@lists.fd.io>] On Behalf Of Mahesh Ishwar Mathad
Sent: Tuesday, May 30, 2017 5:07 AM
To:vpp-dev@lists.fd.io <mailto:vpp-dev@lists.fd.io>
Subject: [vpp-dev] Need some help on VPP
Hi Guys,
I need some help in understanding contents of the file ie.
./src/vppinfra/longjmp.S .
--
Thanks & Regards,
Mahesh Mathad.
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