hi all,
Thanks at first.
But I got some error when using vapi - vapi_connect as " vl_map_shmem:639:
region init fail ".
And my mem : MemFree: 220036 kB | HugePages_Total:
679 | HugePages_Free: 627
Help please!
My code:
int main()
{
vapi_ctx_t ctx;
vapi_error_e rv = vapi_ctx_alloc (&ctx);
vapi_msg_show_version *sv = vapi_alloc_show_version (ctx);
rv = vapi_connect (ctx, app_name, api_prefix, max_outstanding_requests,
response_queue_size, VAPI_MODE_BLOCKING);
rv = vapi_send (ctx, sv);
vapi_msg_show_version_reply *reply;
rv = vapi_recv (ctx, (void **) &reply, NULL, 0, 0);
if(reply != NULL)
printf("ret[%d] program[%s] version[%s] \n build_date[%s]
build_directory[%s]\n", reply->payload.retval, reply->payload.program,
reply->payload.version, reply->payload.build_date,
reply->payload.build_directory);
else
printf("show version return none\n");
rv = vapi_disconnect (ctx);
vapi_ctx_free (ctx);
printf("end\n");
return 0;
}
wangchuan...@163.com
From: Klement Sekera
Date: 2018-09-13 17:02
To: Ole Troan; wangchuanguo
CC: Dave Barach (dbarach); vpp-dev
Subject: Re: [vpp-dev] VPP's C-type-api example
You can also check out the test/ext directory for vapi_c_test.c and
vapi_cpp_test.cpp, which are unittests for these bindings and there is
also an example of _dump API call.
Regards,
Klement
Quoting Ole Troan (2018-09-13 09:33:14)
> Hi again,
>
> > I am in the beginning of using-c-api. Should I not follow
> > (src/vpp-api/client) ?
> > Can you please show me a fun-name and a example of the higher level C API?
>
> That’s right, I wouldn’t recommend using the src/vpp-aoi/client API unless
> you are building a new language binding.
>
> If you need a C interface you should use VAPI.
>
> See interface.api.vapi.h (auto-generated) for sw_interface_dump()
>
> static inline vapi_error_e vapi_sw_interface_dump(struct vapi_ctx_s *ctx,
> vapi_msg_sw_interface_dump *msg,
> vapi_error_e (*callback)(struct vapi_ctx_s *ctx,
> void *callback_ctx,
> vapi_error_e rv,
> bool is_last,
> vapi_payload_sw_interface_details *reply),
> void *callback_ctx)
>
>
> src/vpp-api/vapi/vapi_doc.md for documentation.
>
> To get a feel of how the API works, at even higher level you can play with
> the Python language binding.
>
> Best regards,
> Ole
>
>
>
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