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/*-
* 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/string.h"
#include "spdk/rpc.h"
#include "spdk/util.h"
#include "spdk_internal/log.h"
#include "bdev_virtio.h"
#define SPDK_VIRTIO_USER_DEFAULT_VQ_COUNT 1
#define SPDK_VIRTIO_USER_DEFAULT_QUEUE_SIZE 512
struct rpc_remove_virtio_dev {
char *name;
};
static const struct spdk_json_object_decoder rpc_remove_virtio_dev[] = {
{"name", offsetof(struct rpc_remove_virtio_dev, name), spdk_json_decode_string },
};
static void
rpc_bdev_virtio_detach_controller_cb(void *ctx, int errnum)
{
struct spdk_jsonrpc_request *request = ctx;
struct spdk_json_write_ctx *w;
if (errnum != 0) {
spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS,
spdk_strerror(-errnum));
return;
}
w = spdk_jsonrpc_begin_result(request);
spdk_json_write_bool(w, true);
spdk_jsonrpc_end_result(request, w);
}
static void
rpc_bdev_virtio_detach_controller(struct spdk_jsonrpc_request *request,
const struct spdk_json_val *params)
{
struct rpc_remove_virtio_dev req = {NULL};
int rc = 0;
if (spdk_json_decode_object(params, rpc_remove_virtio_dev,
SPDK_COUNTOF(rpc_remove_virtio_dev),
&req)) {
spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
"spdk_json_decode_object failed");
goto cleanup;
}
rc = bdev_virtio_blk_dev_remove(req.name, rpc_bdev_virtio_detach_controller_cb, request);
if (rc == -ENODEV) {
rc = bdev_virtio_scsi_dev_remove(req.name, rpc_bdev_virtio_detach_controller_cb, request);
}
if (rc != 0) {
spdk_jsonrpc_send_error_response(request, rc, spdk_strerror(-rc));
}
cleanup:
free(req.name);
}
SPDK_RPC_REGISTER("bdev_virtio_detach_controller",
rpc_bdev_virtio_detach_controller, SPDK_RPC_RUNTIME)
SPDK_RPC_REGISTER_ALIAS_DEPRECATED(bdev_virtio_detach_controller, remove_virtio_bdev)
static void
rpc_bdev_virtio_scsi_get_devices(struct spdk_jsonrpc_request *request,
const struct spdk_json_val *params)
{
struct spdk_json_write_ctx *w;
if (params != NULL) {
spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS,
"bdev_virtio_scsi_get_devices requires no parameters");
return;
}
w = spdk_jsonrpc_begin_result(request);
bdev_virtio_scsi_dev_list(w);
spdk_jsonrpc_end_result(request, w);
}
SPDK_RPC_REGISTER("bdev_virtio_scsi_get_devices",
rpc_bdev_virtio_scsi_get_devices, SPDK_RPC_RUNTIME)
SPDK_RPC_REGISTER_ALIAS_DEPRECATED(bdev_virtio_scsi_get_devices, get_virtio_scsi_devs)
struct rpc_bdev_virtio_attach_controller_ctx {
char *name;
char *trtype;
char *traddr;
char *dev_type;
uint32_t vq_count;
uint32_t vq_size;
struct spdk_jsonrpc_request *request;
};
static const struct spdk_json_object_decoder rpc_bdev_virtio_attach_controller_ctx[] = {
{"name", offsetof(struct rpc_bdev_virtio_attach_controller_ctx, name), spdk_json_decode_string },
{"trtype", offsetof(struct rpc_bdev_virtio_attach_controller_ctx, trtype), spdk_json_decode_string },
{"traddr", offsetof(struct rpc_bdev_virtio_attach_controller_ctx, traddr), spdk_json_decode_string },
{"dev_type", offsetof(struct rpc_bdev_virtio_attach_controller_ctx, dev_type), spdk_json_decode_string },
{"vq_count", offsetof(struct rpc_bdev_virtio_attach_controller_ctx, vq_count), spdk_json_decode_uint32, true },
{"vq_size", offsetof(struct rpc_bdev_virtio_attach_controller_ctx, vq_size), spdk_json_decode_uint32, true },
};
static void
free_rpc_bdev_virtio_attach_controller_ctx(struct rpc_bdev_virtio_attach_controller_ctx *req)
{
free(req->name);
free(req->trtype);
free(req->traddr);
free(req->dev_type);
free(req);
}
static void
rpc_create_virtio_dev_cb(void *ctx, int result, struct spdk_bdev **bdevs, size_t cnt)
{
struct rpc_bdev_virtio_attach_controller_ctx *req = ctx;
struct spdk_json_write_ctx *w;
size_t i;
if (result) {
spdk_jsonrpc_send_error_response(req->request, SPDK_JSONRPC_ERROR_INVALID_PARAMS,
spdk_strerror(-result));
free_rpc_bdev_virtio_attach_controller_ctx(req);
return;
}
w = spdk_jsonrpc_begin_result(req->request);
spdk_json_write_array_begin(w);
for (i = 0; i < cnt; i++) {
spdk_json_write_string(w, spdk_bdev_get_name(bdevs[i]));
}
spdk_json_write_array_end(w);
spdk_jsonrpc_end_result(req->request, w);
free_rpc_bdev_virtio_attach_controller_ctx(ctx);
}
static void
rpc_bdev_virtio_attach_controller(struct spdk_jsonrpc_request *request,
const struct spdk_json_val *params)
{
struct rpc_bdev_virtio_attach_controller_ctx *req;
struct spdk_bdev *bdev;
struct spdk_pci_addr pci_addr;
bool pci;
int rc;
req = calloc(1, sizeof(*req));
if (!req) {
SPDK_ERRLOG("calloc() failed\n");
spdk_jsonrpc_send_error_response(request, -ENOMEM, spdk_strerror(ENOMEM));
return;
}
if (spdk_json_decode_object(params, rpc_bdev_virtio_attach_controller_ctx,
SPDK_COUNTOF(rpc_bdev_virtio_attach_controller_ctx),
req)) {
spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
"spdk_json_decode_object failed");
goto cleanup;
}
if (strcmp(req->trtype, "pci") == 0) {
if (req->vq_count != 0 || req->vq_size != 0) {
SPDK_ERRLOG("VQ count or size is not allowed for PCI transport type\n");
spdk_jsonrpc_send_error_response(request, EINVAL,
"vq_count or vq_size is not allowed for PCI transport type.");
goto cleanup;
}
if (spdk_pci_addr_parse(&pci_addr, req->traddr) != 0) {
SPDK_ERRLOG("Invalid PCI address '%s'\n", req->traddr);
spdk_jsonrpc_send_error_response_fmt(request, EINVAL, "Invalid PCI address '%s'", req->traddr);
goto cleanup;
}
pci = true;
} else if (strcmp(req->trtype, "user") == 0) {
req->vq_count = req->vq_count == 0 ? SPDK_VIRTIO_USER_DEFAULT_VQ_COUNT : req->vq_count;
req->vq_size = req->vq_size == 0 ? SPDK_VIRTIO_USER_DEFAULT_QUEUE_SIZE : req->vq_size;
pci = false;
} else {
SPDK_ERRLOG("Invalid trtype '%s'\n", req->trtype);
spdk_jsonrpc_send_error_response_fmt(request, EINVAL, "Invalid trtype '%s'", req->trtype);
goto cleanup;
}
req->request = request;
if (strcmp(req->dev_type, "blk") == 0) {
if (pci) {
bdev = bdev_virtio_pci_blk_dev_create(req->name, &pci_addr);
} else {
bdev = bdev_virtio_user_blk_dev_create(req->name, req->traddr, req->vq_count, req->vq_size);
}
/* Virtio blk doesn't use callback so call it manually to send result. */
rc = bdev ? 0 : -EINVAL;
rpc_create_virtio_dev_cb(req, rc, &bdev, bdev ? 1 : 0);
} else if (strcmp(req->dev_type, "scsi") == 0) {
if (pci) {
rc = bdev_virtio_pci_scsi_dev_create(req->name, &pci_addr, rpc_create_virtio_dev_cb, req);
} else {
rc = bdev_virtio_user_scsi_dev_create(req->name, req->traddr, req->vq_count, req->vq_size,
rpc_create_virtio_dev_cb, req);
}
if (rc < 0) {
/* In case of error callback is not called so do it manually to send result. */
rpc_create_virtio_dev_cb(req, rc, NULL, 0);
}
} else {
SPDK_ERRLOG("Invalid dev_type '%s'\n", req->dev_type);
spdk_jsonrpc_send_error_response_fmt(request, EINVAL, "Invalid dev_type '%s'", req->dev_type);
goto cleanup;
}
return;
cleanup:
free_rpc_bdev_virtio_attach_controller_ctx(req);
}
SPDK_RPC_REGISTER("bdev_virtio_attach_controller",
rpc_bdev_virtio_attach_controller, SPDK_RPC_RUNTIME);
SPDK_RPC_REGISTER_ALIAS_DEPRECATED(bdev_virtio_attach_controller, construct_virtio_dev)
|
