Hi Ole,
So instead of the code below, I tried the code from
"src/vpp-api/client/test.c". I directly copied this into my .c file. And
following commands i used
compilation + linking : - gcc vpp_api_client_vac_layer.c -o
vpp_api_client_vac_layer.o -lpthread -lvlibmemoryclient -lvppinfra
-lvppapiclient -I/usr/include/
code is below
#include<stdio.h>
#include<stdlib.h>
#include <vnet/vnet.h>
#include <vlib/vlib.h>
#include <vlib/unix/unix.h>
#include <vlibapi/api.h>
#include <vppinfra/time.h>
#include <vpp/api/vpe_msg_enum.h>
#include <signal.h>
#include<vpp-api/client/vppapiclient.h>
#include<vpp-api/client/stat_client.h>
#define vl_typedefs /* define message structures */
#include <vpp/api/vpe_all_api_h.h>
#undef vl_typedefs
volatile int sigterm_received = 0;
volatile u32 result_ready;
volatile u16 result_msg_id;
/* M_NOALLOC: construct, but don't yet send a message */
#define M_NOALLOC(T,t) \
do { \
result_ready = 0; \
clib_memset (mp, 0, sizeof (*mp)); \
mp->_vl_msg_id = ntohs (VL_API_##T); \
mp->client_index = am->my_client_index; \
} while(0);
void
wrap_vac_callback (unsigned char *data, int len)
{
result_ready = 1;
result_msg_id = ntohs(*((u16 *)data));
}
static void
test_connect ()
{
static int i;
int rv = vac_connect("vac_client", NULL, wrap_vac_callback, 32 /*
rx queue-length*/);
if (rv != 0) {
printf("Connect failed: %d\n", rv);
exit(rv);
}
printf(".");
vac_disconnect();
i++;
}
static void test_messages (void)
{
api_main_t * am = vlibapi_get_main();
vl_api_show_version_t message;
vl_api_show_version_t *mp;
int async = 1;
int rv = vac_connect("vac_client", NULL, wrap_vac_callback, 32 /*
rx queue-length*/);
if (rv != 0) {
printf("Connect failed: %d\n", rv);
exit(rv);
}
double timestamp_start = unix_time_now_nsec() * 1e-6;
/*
* Test vpe_api_write and vpe_api_read to send and recv message for
an
* API
*/
int i;
long int no_msgs = 10000;
mp = &message;
for (i = 0; i < no_msgs; i++) {
/* Construct the API message */
M_NOALLOC(SHOW_VERSION, show_version);
vac_write((char *)mp, sizeof(*mp));
#ifndef __COVERITY__
/* As given, async is always 1. Shut up Coverity about it */
if (!async)
while (result_ready == 0);
#endif
}
if (async) {
vl_api_control_ping_t control;
vl_api_control_ping_t *mp;
mp = &control;
M_NOALLOC(CONTROL_PING, control_ping);
vac_write((char *)mp, sizeof(*mp));
while (result_msg_id != VL_API_CONTROL_PING_REPLY);
}
double timestamp_end = unix_time_now_nsec() * 1e-6;
printf("\nTook %.2f msec, %.0f msgs/msec \n", (timestamp_end -
timestamp_start),
no_msgs/(timestamp_end - timestamp_start));
printf("Exiting...\n");
vac_disconnect();
}
int main (int argc, char ** argv)
{
#if 0
clib_mem_init (0, 3ULL << 30);
test_stats();
#endif
int i;
for (i = 0; i < 1000; i++) {
test_connect();
}
test_messages();
exit (0);
}
It compiled successfully, i got following assert for heap
[root@8f57181df3a1 vpp_c_api_examples]# gdb ./vpp_api_client_vac_layer.o
GNU gdb (GDB) Red Hat Enterprise Linux 8.3-3.el7
Copyright (C) 2019 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html
>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./vpp_api_client_vac_layer.o...
(No debugging symbols found in ./vpp_api_client_vac_layer.o)
(gdb) r
Starting program: /root/vpp_c_api_examples/vpp_api_client_vac_layer.o
Missing separate debuginfos, use: debuginfo-install
glibc-2.17-324.el7_9.x86_64
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
vpp_api_client_vac_layer.o:
/vpp/build-root/rpmbuild/vpp-21.06.0/src/vpp-api/client/client.c:295:
vac_connect: Assertion `clib_mem_get_heap ()' failed.
Program received signal SIGABRT, Aborted.
0x00007ffff7827387 in raise () from /lib64/libc.so.6
(gdb) bt
#0 0x00007ffff7827387 in raise () from /lib64/libc.so.6
#1 0x00007ffff7828a78 in abort () from /lib64/libc.so.6
#2 0x00007ffff78201a6 in __assert_fail_base () from /lib64/libc.so.6
#3 0x00007ffff7820252 in __assert_fail () from /lib64/libc.so.6
#4 0x00007ffff7f57bcd in vac_connect (name=0x402010 "vac_client",
chroot_prefix=0x0, cb=0x4011d2 <wrap_vac_callback>, rx_qlen=32)
at /usr/src/debug/vpp-21.06.0/src/vpp-api/client/client.c:314
#5 0x0000000000401227 in test_connect ()
#6 0x0000000000401687 in main ()
(gdb)
Startup.conf
[root@8f57181df3a1 vpp_c_api_examples]# cat /etc/vpp/startup.conf
unix {
#nodaemon
#interactive
log /var/log/vpp/vpp.log
cli-listen /run/vpp/cli.sock
gid vpp
#exec /etc/ipsec-setup.txt
}
cpu {
main-core 2
}
dpdk {
dev default {
num-rx-desc 512
num-tx-desc 512
}
socket-mem 1024
dev 0000:00:04.0
uio-driver uio_pci_generic
}
logging {
default-log-level debug
default-syslog-log-level info
}
[root@8f57181df3a1 vpp_c_api_examples]#
I
Is there some setting i need to do in the startup.conf ?
Please suggest a way to fix this assert.
Thanks,
Regards
Venu
On Thu, 30 Sept 2021 at 21:08, Benoit Ganne (bganne) <bga...@cisco.com>
wrote:
> You should remove -lvlib it is not needed here.
> If you really want to link with vlib, you must fix the link ordering: vlib
> depends upon vppinfra (where os_exit is defined) so you'd need link as
> -lvlib -lvppinfra instead of the opposite (the C linker scan libraries
> symbols in reverse order, so symbols declared in a library are available to
> libraries listed *before*).
>
> Best
> ben
>
> > -----Original Message-----
> > From: vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> On Behalf Of Venumadhav
> > Josyula
> > Sent: jeudi 30 septembre 2021 16:09
> > To: Akash S R <akashsr.akas...@gmail.com>
> > Cc: Benoit Ganne (bganne) <bga...@cisco.com>; Ole Troan
> > <otr...@employees.org>; RaviKiran Veldanda <ravi.jup...@gmail.com>; vpp-
> > dev <vpp-dev@lists.fd.io>
> > Subject: Re: [vpp-dev] VPP Socket API how to use from the application
> > #socket-api #vpp #sock-api
> >
> > Hi Akash,
> >
> > Thansks, now after devtoolset,
> >
> >
> > @Benoit Ganne (bganne) <mailto:bga...@cisco.com> , @Ole Troan
> > <mailto:otr...@employees.org>
> >
> > i am getting following error
> >
> > [root@8f57181df3a1 vpp_c_api_examples]# gcc vpp_api_client_test3.c -o
> > vpp_api_client_test3.o -lvlibmemoryclient -lsvm -lvppinfra -lvlib
> > /opt/rh/devtoolset-9/root/usr/libexec/gcc/x86_64-redhat-linux/9/ld:
> > /lib/../lib64/libvlib.so: undefined reference to
> > `classify_get_trace_chain'
> > /opt/rh/devtoolset-9/root/usr/libexec/gcc/x86_64-redhat-linux/9/ld:
> > /lib/../lib64/libvlib.so: undefined reference to
> > `stat_segment_register_gauge'
> > /opt/rh/devtoolset-9/root/usr/libexec/gcc/x86_64-redhat-linux/9/ld:
> > /lib/../lib64/libvlib.so: undefined reference to `os_exit'
> > collect2: error: ld returned 1 exit status
> > [root@8f57181df3a1 vpp_c_api_examples]#
> >
> > Let me paste the code again,
> > #include<stdio.h>
> > #include<stdlib.h>
> > #include <vlibapi/api.h>
> > #include <vlibmemory/api.h>
> > #include <vpp/api/vpe_msg_enum.h>
> >
> > #define vl_typedefs
> > #define vl_endianfun
> > #include <vpp/api/vpe_all_api_h.h>
> > #undef vl_typedefs
> > #undef vl_endianfun
> >
> > int main()
> > {
> > char *name = "vpp-test-app";
> >
> > clib_mem_init_thread_safe (0, 64ULL << 20);
> >
> > if (vl_client_api_map("/vpe-api"))
> > {
> > printf("unable to map....\n");
> > goto quit;
> > }
> > if (vl_client_connect("vpp-test-app", 0, 32) < 0)
> > {
> > printf("unable to connect \n");
> > vl_client_api_unmap();
> > goto quit;
> > }
> > printf("successfully connected... \n");
> > quit:
> > return 0;
> > }
> >
> > Is this wrong way, i am trying to use APIs ?
> >
> > Thanks,
> > Regards
> > Venu
> >
> >
> > On Thu, 30 Sept 2021 at 19:00, Akash S R <akashsr.akas...@gmail.com
> > <mailto:akashsr.akas...@gmail.com> > wrote:
> >
> >
> > Hey Venu,
> >
> > Try "scl enable devtoolset-9 bash" inside your docker or update
> your
> > gcc version.
> >
> >
> > /Akash S R
> >
> > On Thu, Sep 30, 2021, 18:54 Venumadhav Josyula <vjosy...@gmail.com
> > <mailto:vjosy...@gmail.com> > wrote:
> >
> >
> > Hi Benoit,
> >
> > Thanks for quick reply.
> >
> > I have docker with following
> > [root@8f57181df3a1 vpp_c_api_examples]# rpm -qa | grep vpp
> > vpp-lib-21.06.0-4~g0d9d3a0.x86_64
> > vpp-api-lua-21.06.0-4~g0d9d3a0.x86_64
> > vpp-api-python3-21.06.0-4~g0d9d3a0.x86_64
> > vpp-debuginfo-21.06.0-4~g0d9d3a0.x86_64
> > vpp-selinux-policy-21.06.0-4~g0d9d3a0.x86_64
> > vpp-21.06.0-4~g0d9d3a0.x86_64
> > vpp-plugins-21.06.0-4~g0d9d3a0.x86_64
> > vpp-devel-21.06.0-4~g0d9d3a0.x86_64
> >
> > This will vpp running in it.
> >
> > [root@8f57181df3a1 /]# cat /etc/redhat-release
> > CentOS Linux release 7.3.1611 (Core)
> > [root@8f57181df3a1 /]#
> >
> > > Eg. use devtoolset-9 (gcc-9).
> >
> >
> > How do I use it ?
> >
> > Thanks,
> > Regards,
> > Venu
> >
> >
> > On Thu, 30 Sept 2021 at 18:47, Benoit Ganne (bganne)
> > <bga...@cisco.com <mailto:bga...@cisco.com> > wrote:
> >
> >
> > You should upgrade your compiler... GCC-4 is way
> too
> > old.
> > Eg. use devtoolset-9 (gcc-9).
> >
> > Best
> > ben
> >
> > > -----Original Message-----
> > > From: vpp-dev@lists.fd.io <mailto:
> vpp-dev@lists.fd.io>
> > <vpp-dev@lists.fd.io <mailto:vpp-dev@lists.fd.io> > On Behalf Of
> > Venumadhav
> > > Josyula
> > > Sent: jeudi 30 septembre 2021 14:49
> > > To: otr...@employees.org <mailto:
> otr...@employees.org>
> > > Cc: RaviKiran Veldanda <ravi.jup...@gmail.com
> > <mailto:ravi.jup...@gmail.com> >; vpp-dev <vpp-
> > > d...@lists.fd.io <mailto:d...@lists.fd.io> >
> > > Subject: Re: [vpp-dev] VPP Socket API how to use
> from
> > the application
> > > #socket-api #vpp #sock-api
> > >
> > > Hi Ole / Others,
> > >
> > >
> > >
> > > Thanks for your email, i getting following
> compilation
> > error
> > > [root@8f57181df3a1 vpp_c_api_examples]# gcc
> > vpp_api_client_test3.c -o
> > > vpp_api_client_test3.o -lvlibmemoryclient -lsvm -
> > lvppinfra -lvlib
> > > In file included from
> > /usr/include/vppinfra/error.h:41:0,
> > > from
> /usr/include/vlibapi/api.h:24,
> > > from vpp_api_client_test3.c:3:
> > > /usr/include/vppinfra/clib.h:43:18: error:
> missing
> > binary operator before
> > > token "("
> > > #if __has_include(<vppinfra/config.h>)
> > > ^
> > > In file included from
> > /usr/include/vppinfra/mem.h:49:0,
> > > from
> /usr/include/vppinfra/vec.h:42,
> > > from
> > /usr/include/vppinfra/error.h:53,
> > > from
> /usr/include/vlibapi/api.h:24,
> > > from vpp_api_client_test3.c:3:
> > > /usr/include/vppinfra/string.h:92:34: error:
> expected
> > ';', ',' or ')'
> > > before 'dst'
> > > clib_memcpy_fast (void *restrict dst, const void
> > *restrict src, size_t n)
> > > ^
> > > [root@8f57181df3a1 vpp_c_api_examples]# vim
> > /usr/include/vppinfra/clib.h
> > > +43
> > > [root@8f57181df3a1 vpp_c_api_examples]# vim
> > /usr/include/vppinfra/clib.h
> > > +43
> > > [root@8f57181df3a1 vpp_c_api_examples]# gcc
> --version
> > > gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-44)
> > > Copyright (C) 2015 Free Software Foundation, Inc.
> > > This is free software; see the source for copying
> > conditions. There is NO
> > > warranty; not even for MERCHANTABILITY or
> FITNESS FOR
> > A PARTICULAR
> > > PURPOSE.
> > >
> > > [root@8f57181df3a1 vpp_c_api_examples]#
> > >
> > >
> > > -----------------
> > >
> > > c -code
> > > ----------------
> > >
> > >
> > > #include<stdio.h>
> > > #include<stdlib.h>
> > > #include <vlibapi/api.h>
> > > #include <vlibmemory/api.h>
> > > #include <vpp/api/vpe_msg_enum.h>
> > >
> > > #define vl_typedefs
> > > #define vl_endianfun
> > > #include <vpp/api/vpe_all_api_h.h>
> > > #undef vl_typedefs
> > > #undef vl_endianfun
> > >
> > > int main()
> > > {
> > > char *name = "vpp-test-app";
> > >
> > > clib_mem_init_thread_safe (0, 64ULL << 20);
> > >
> > > if (vl_client_api_map("/vpe-api"))
> > > {
> > > printf("unable to map....\n");
> > > goto quit;
> > > }
> > > if (vl_client_connect("vpp-test-app", 0, 32)
> < 0)
> > > {
> > > printf("unable to connect \n");
> > > vl_client_api_unmap();
> > > goto quit;
> > > }
> > > printf("successfully connected... \n");
> > > quit:
> > > return 0;
> > > }
> > >
> > >
> > > ------------
> > >
> > >
> > > Can you please suggest what can i be doing worng
> ?
> > >
> > >
> > > Thanks,
> > > Regards,
> > > Venu
> > >
> > >
> > > On Thu, 30 Sept 2021 at 13:21, <
> otr...@employees.org
> > <mailto:otr...@employees.org>
> > > <mailto:otr...@employees.org
> > <mailto:otr...@employees.org> > > wrote:
> > >
> > >
> > > Hi Venu,
> > >
> > > > Any examples for VAPI shared to use
> binary
> > APIs ?
> > >
> > > Try this for a start:
> > > https://git.fd.io/vpp/tree/src/vpp-
> > api/vapi/vapi_c_test.c
> > >
> > > Cheers,
> > > Ole
> > >
> > >
> >
> >
> >
> >
> >
>
>
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