bdev: Add rpc interface for nvme

include $(SPDK_ROOT_DIR)/mk/spdk.common.mk

CFLAGS += $(ENV_CFLAGS) -I$(SPDK_ROOT_DIR)/lib/bdev/

C_SRCS = blockdev_nvme.c

C_SRCS = blockdev_nvme.c blockdev_nvme_rpc.c

LIBNAME = bdev_nvme

include $(SPDK_ROOT_DIR)/mk/spdk.lib.mk

/*-

 *   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

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 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#include "blockdev_nvme.h"

#include "spdk/log.h"

#include "spdk/rpc.h"

struct rpc_construct_nvme {

	char *pci_address;

};

static void

free_rpc_construct_nvme(struct rpc_construct_nvme *req)

{

	free(req->pci_address);

}

static const struct spdk_json_object_decoder rpc_construct_nvme_decoders[] = {

	{"pci_address", offsetof(struct rpc_construct_nvme, pci_address), spdk_json_decode_string},

};

static void

spdk_rpc_construct_nvme_bdev(struct spdk_jsonrpc_server_conn *conn,

			     const struct spdk_json_val *params,

			     const struct spdk_json_val *id)

{

	struct rpc_construct_nvme req = {};

	struct spdk_json_write_ctx *w;

	struct nvme_probe_ctx ctx = {};

	unsigned int domain, bus, dev, func;

	int rc;

	if (spdk_json_decode_object(params, rpc_construct_nvme_decoders,

				    sizeof(rpc_construct_nvme_decoders) / sizeof(*rpc_construct_nvme_decoders),

				    &req)) {

		SPDK_TRACELOG(SPDK_TRACE_DEBUG, "spdk_json_decode_object failed\n");

		goto invalid;

	}

	ctx.controllers_remaining = 1;

	ctx.num_whitelist_controllers = 1;

	rc = sscanf(req.pci_address, "%x:%x:%x.%x", &domain, &bus, &dev, &func);

	if (rc != 4) {

		goto invalid;

	}

	ctx.whitelist[0].domain = domain;

	ctx.whitelist[0].bus = bus;

	ctx.whitelist[0].dev = dev;

	ctx.whitelist[0].func = func;

	if (spdk_bdev_nvme_create(&ctx)) {

		goto invalid;

	}

	free_rpc_construct_nvme(&req);

	if (id == NULL) {

		return;

	}

	w = spdk_jsonrpc_begin_result(conn, id);

	spdk_json_write_bool(w, true);

	spdk_jsonrpc_end_result(conn, w);

	return;

invalid:

	spdk_jsonrpc_send_error_response(conn, id, SPDK_JSONRPC_ERROR_INVALID_PARAMS, "Invalid parameters");

	free_rpc_construct_nvme(&req);

}

SPDK_RPC_REGISTER("construct_nvme_bdev", spdk_rpc_construct_nvme_bdev)