Hi Dave,
As per your suggestion, we have compiled a shared library and renamed main
in vnet/main.c as cust_main ().
Invoking the cust_main() from our application results in a hang. Bt as
below:
Thread 1 "vpp_main" received signal SIGINT, Interrupt.
0x00007ffff519d888 in clib_time_now_internal (c=0x7fffb3115680,
n=287541441385032)
at /home/soundarya/june4/vpp/src/vppinfra/time.h:219
219 if (PREDICT_FALSE
Missing separate debuginfos, use: debuginfo-install
check-0.9.9-5.el7.x86_64 keyutils-libs-1.5.8-3.el7.x86_64
libgcc-4.8.5-44.el7.x86_64 libselinux-2.5-15.el7.x86_64
libstdc++-4.8.5-44.el7.x86_64 libuuid-2.23.2-65.el7_9.1.x86_64
mbedtls-2.7.17-1.el7.x86_64 numactl-libs-2.0.12-5.el7.x86_64
pcre-8.32-17.el7.x86_64 pkcs11-helper-1.11-3.el7.x86_64
(gdb) thread apply all bt
Thread 2 (Thread 0x7fffac0de700 (LWP 10052)):
#0 0x00007ffff6ad0fd3 in epoll_wait () at
../sysdeps/unix/syscall-template.S:81
#1 0x00007fffb03dae84 in eal_intr_thread_main () from
/home/soundarya/june4/vpp/build-root/install-vpp_debug-native/vpp/lib/vpp_plugins/dpdk_plugin.so
#2 0x00007ffff7b53ea5 in start_thread (arg=0x7fffac0de700) at
pthread_create.c:307
#3 0x00007ffff6ad09fd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:111
Thread 1 (Thread 0x7ffff3218940 (LWP 10048)):
#0 0x00007ffff51a57f9 in vlib_main_or_worker_loop (vm=0x7fffb3115680,
is_main=1) at /home/soundarya/june4/vpp/src/vlib/main.c:1764
#1 0x00007ffff51a599e in vlib_main_loop (vm=0x7fffb3115680) at
/home/soundarya/june4/vpp/src/vlib/main.c:1794
#2 0x00007ffff51a69f6 in vlib_main (vm=0x7fffb3115680,
input=0x7fffae6c3fb0) at /home/soundarya/june4/vpp/src/vlib/main.c:2083
#3 0x00007ffff52118c1 in thread0 (arg=140736197645952) at
/home/soundarya/june4/vpp/src/vlib/unix/main.c:671
#4 0x00007ffff7e5d638 in clib_calljmp () at
/home/5G/vpp/src/vppinfra/longjmp.S:123
#5 0x00007fffffffafa0 in ?? ()
#6 0x00007ffff5212010 in vlib_unix_main (argc=37, argv=0x46a3c0) at
/home/soundarya/june4/vpp/src/vlib/unix/main.c:751
#7 0x00007ffff7f2774e in cust_main (argc=37, argv=0x46a3c0) at
/home/soundarya/june4/vpp/src/vpp/vnet/main.c:339
#8 0x000000000041757c in main () at
/home/soundarya/june4/ViNGC/upf/DataPlane/packetProcessing/vpp/dp/sim/src/altvppsim.c:119
(gdb)
Any points to resolve it?
Thanks in Advance!
Regards,
Akash
On Wed, May 19, 2021 at 5:48 PM Akash S R via lists.fd.io <akashsr.akashsr=
gmail....@lists.fd.io> wrote:
> Thanks Dave, Will check it out and get back here if any query is to be
> addressed.
>
> Regards,
> Akash
>
> On Wed, May 19, 2021, 4:51 PM <v...@barachs.net> wrote:
>
>> Long ago, we decided to strictly separate the vpp data plane process from
>> its control plane process(es); as a matter of fault containment if nothing
>> else.
>>
>>
>>
>> As a practical matter, if you want to build vpp as a library you could
>> change .../src/vpp/vnet/main.c in trivial ways, and adjust
>> .../src/vpp/CMakeLists.txt to build a shared library instead of a
>> standalone binary.
>>
>>
>>
>> Bottom line: I wouldn’t go there myself for any number of reasons, but it
>> wouldn’t be difficult.
>>
>>
>>
>> HTH... Dave
>>
>>
>>
>> *From:* vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> *On Behalf Of *Akash S
>> R
>> *Sent:* Wednesday, May 19, 2021 6:31 AM
>> *To:* vpp-dev@lists.fd.io
>> *Cc:* srilcha...@gmail.com
>> *Subject:* [vpp-dev] Quick question on VPP on : How to Embed VPP as
>> library
>>
>>
>>
>> Hi All,
>>
>> We are using VPP version 21.06 (Latest)
>> We understand that vpp package consists of libraries , plugins,dev and
>> debugs utilities and runs as exe .
>> But as per our current usage , we have a control plane application layer
>> from which we have included VPP packages as libraries from our Makefile .
>> We launch VPP as a separate process and we invoke VAPI's using socket.
>>
>> What is the way to embed VPP directly as a library (Instead of a separate
>> process ) and directly invoke VAPI's from control plane applications ?
>>
>> This is important since we need to know how to deliver VPP as a library
>> to our client. Please Reply Back if any Related Solution is known.
>>
>>
>>
>> Thanks in Advance!
>>
>>
>>
>> Regards,
>>
>> Akash
>>
>
>
>
>
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