numam-spdk/lib/event/rpc.c
Ben Walker f046750c32 event: Add return code to spdk_rpc_initialize
This is an internal API used in several places. The call can fail, so
make sure it can report that correctly.

Change-Id: Iac0ed2c8299c9dd3d2556070278a2224c3807b7b
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/6640
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: <dongx.yi@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
2021-03-12 08:38:10 +00:00

91 lines
2.7 KiB
C

/*-
* BSD LICENSE
*
* Copyright (c) Intel Corporation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "spdk/stdinc.h"
#include "spdk/env.h"
#include "spdk/thread.h"
#include "spdk/log.h"
#include "spdk/rpc.h"
#include "spdk_internal/event.h"
#define RPC_SELECT_INTERVAL 4000 /* 4ms */
static struct spdk_poller *g_rpc_poller = NULL;
static int
rpc_subsystem_poll(void *arg)
{
spdk_rpc_accept();
return SPDK_POLLER_BUSY;
}
int
spdk_rpc_initialize(const char *listen_addr)
{
int rc;
if (listen_addr == NULL) {
/* Not treated as an error */
return 0;
}
if (!spdk_rpc_verify_methods()) {
return -EINVAL;
}
/* Listen on the requested address */
rc = spdk_rpc_listen(listen_addr);
if (rc != 0) {
SPDK_ERRLOG("Unable to start RPC service at %s\n", listen_addr);
/* TODO: Eventually, treat this as an error. But it historically has not
* been and many tests rely on this gracefully failing. */
return 0;
}
spdk_rpc_set_state(SPDK_RPC_STARTUP);
/* Register a poller to periodically check for RPCs */
g_rpc_poller = SPDK_POLLER_REGISTER(rpc_subsystem_poll, NULL, RPC_SELECT_INTERVAL);
return 0;
}
void
spdk_rpc_finish(void)
{
spdk_rpc_close();
spdk_poller_unregister(&g_rpc_poller);
}