2019-02-18 10:36:11 +00:00
|
|
|
// SPDX-License-Identifier: GPL-2.0
|
2016-06-21 16:04:20 +00:00
|
|
|
/*
|
|
|
|
* NVMe Fabrics command implementation.
|
|
|
|
* Copyright (c) 2015-2016 HGST, a Western Digital Company.
|
|
|
|
*/
|
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
|
|
#include <linux/blkdev.h>
|
|
|
|
#include "nvmet.h"
|
|
|
|
|
|
|
|
static void nvmet_execute_prop_set(struct nvmet_req *req)
|
|
|
|
{
|
2018-12-12 23:11:44 +00:00
|
|
|
u64 val = le64_to_cpu(req->cmd->prop_set.value);
|
2016-06-21 16:04:20 +00:00
|
|
|
u16 status = 0;
|
|
|
|
|
2019-10-23 16:35:44 +00:00
|
|
|
if (!nvmet_check_data_len(req, 0))
|
|
|
|
return;
|
|
|
|
|
2018-12-12 23:11:44 +00:00
|
|
|
if (req->cmd->prop_set.attrib & 1) {
|
|
|
|
req->error_loc =
|
|
|
|
offsetof(struct nvmf_property_set_command, attrib);
|
2016-06-21 16:04:20 +00:00
|
|
|
status = NVME_SC_INVALID_FIELD | NVME_SC_DNR;
|
2018-12-12 23:11:44 +00:00
|
|
|
goto out;
|
2016-06-21 16:04:20 +00:00
|
|
|
}
|
|
|
|
|
2018-12-12 23:11:44 +00:00
|
|
|
switch (le32_to_cpu(req->cmd->prop_set.offset)) {
|
|
|
|
case NVME_REG_CC:
|
|
|
|
nvmet_update_cc(req->sq->ctrl, val);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
req->error_loc =
|
|
|
|
offsetof(struct nvmf_property_set_command, offset);
|
|
|
|
status = NVME_SC_INVALID_FIELD | NVME_SC_DNR;
|
|
|
|
}
|
|
|
|
out:
|
2016-06-21 16:04:20 +00:00
|
|
|
nvmet_req_complete(req, status);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void nvmet_execute_prop_get(struct nvmet_req *req)
|
|
|
|
{
|
|
|
|
struct nvmet_ctrl *ctrl = req->sq->ctrl;
|
|
|
|
u16 status = 0;
|
|
|
|
u64 val = 0;
|
|
|
|
|
2019-10-23 16:35:44 +00:00
|
|
|
if (!nvmet_check_data_len(req, 0))
|
|
|
|
return;
|
|
|
|
|
2016-06-21 16:04:20 +00:00
|
|
|
if (req->cmd->prop_get.attrib & 1) {
|
|
|
|
switch (le32_to_cpu(req->cmd->prop_get.offset)) {
|
|
|
|
case NVME_REG_CAP:
|
|
|
|
val = ctrl->cap;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
status = NVME_SC_INVALID_FIELD | NVME_SC_DNR;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
switch (le32_to_cpu(req->cmd->prop_get.offset)) {
|
|
|
|
case NVME_REG_VS:
|
|
|
|
val = ctrl->subsys->ver;
|
|
|
|
break;
|
|
|
|
case NVME_REG_CC:
|
|
|
|
val = ctrl->cc;
|
|
|
|
break;
|
|
|
|
case NVME_REG_CSTS:
|
|
|
|
val = ctrl->csts;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
status = NVME_SC_INVALID_FIELD | NVME_SC_DNR;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2018-12-12 23:11:44 +00:00
|
|
|
if (status && req->cmd->prop_get.attrib & 1) {
|
|
|
|
req->error_loc =
|
|
|
|
offsetof(struct nvmf_property_get_command, offset);
|
|
|
|
} else {
|
|
|
|
req->error_loc =
|
|
|
|
offsetof(struct nvmf_property_get_command, attrib);
|
|
|
|
}
|
|
|
|
|
2019-04-08 15:39:59 +00:00
|
|
|
req->cqe->result.u64 = cpu_to_le64(val);
|
2016-06-21 16:04:20 +00:00
|
|
|
nvmet_req_complete(req, status);
|
|
|
|
}
|
|
|
|
|
2017-02-28 05:21:33 +00:00
|
|
|
u16 nvmet_parse_fabrics_cmd(struct nvmet_req *req)
|
2016-06-21 16:04:20 +00:00
|
|
|
{
|
|
|
|
struct nvme_command *cmd = req->cmd;
|
|
|
|
|
|
|
|
switch (cmd->fabrics.fctype) {
|
|
|
|
case nvme_fabrics_type_property_set:
|
|
|
|
req->execute = nvmet_execute_prop_set;
|
|
|
|
break;
|
|
|
|
case nvme_fabrics_type_property_get:
|
|
|
|
req->execute = nvmet_execute_prop_get;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
pr_err("received unknown capsule type 0x%x\n",
|
|
|
|
cmd->fabrics.fctype);
|
2018-12-12 23:11:44 +00:00
|
|
|
req->error_loc = offsetof(struct nvmf_common_command, fctype);
|
2016-06-21 16:04:20 +00:00
|
|
|
return NVME_SC_INVALID_OPCODE | NVME_SC_DNR;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static u16 nvmet_install_queue(struct nvmet_ctrl *ctrl, struct nvmet_req *req)
|
|
|
|
{
|
|
|
|
struct nvmf_connect_command *c = &req->cmd->connect;
|
|
|
|
u16 qid = le16_to_cpu(c->qid);
|
|
|
|
u16 sqsize = le16_to_cpu(c->sqsize);
|
|
|
|
struct nvmet_ctrl *old;
|
2020-02-04 12:38:10 +00:00
|
|
|
u16 ret;
|
2016-06-21 16:04:20 +00:00
|
|
|
|
|
|
|
old = cmpxchg(&req->sq->ctrl, NULL, ctrl);
|
|
|
|
if (old) {
|
|
|
|
pr_warn("queue already connected!\n");
|
2018-12-12 23:11:44 +00:00
|
|
|
req->error_loc = offsetof(struct nvmf_connect_command, opcode);
|
2016-06-21 16:04:20 +00:00
|
|
|
return NVME_SC_CONNECT_CTRL_BUSY | NVME_SC_DNR;
|
|
|
|
}
|
2017-09-18 16:08:29 +00:00
|
|
|
if (!sqsize) {
|
|
|
|
pr_warn("queue size zero!\n");
|
2018-12-12 23:11:44 +00:00
|
|
|
req->error_loc = offsetof(struct nvmf_connect_command, sqsize);
|
2020-02-04 12:38:10 +00:00
|
|
|
ret = NVME_SC_CONNECT_INVALID_PARAM | NVME_SC_DNR;
|
|
|
|
goto err;
|
2017-09-18 16:08:29 +00:00
|
|
|
}
|
2016-06-21 16:04:20 +00:00
|
|
|
|
2017-09-18 16:08:29 +00:00
|
|
|
/* note: convert queue size from 0's-based value to 1's-based value */
|
|
|
|
nvmet_cq_setup(ctrl, req->cq, qid, sqsize + 1);
|
|
|
|
nvmet_sq_setup(ctrl, req->sq, qid, sqsize + 1);
|
2018-11-19 22:11:12 +00:00
|
|
|
|
|
|
|
if (c->cattr & NVME_CONNECT_DISABLE_SQFLOW) {
|
|
|
|
req->sq->sqhd_disabled = true;
|
2019-04-08 15:39:59 +00:00
|
|
|
req->cqe->sq_head = cpu_to_le16(0xffff);
|
2018-11-19 22:11:12 +00:00
|
|
|
}
|
|
|
|
|
2018-12-04 01:52:11 +00:00
|
|
|
if (ctrl->ops->install_queue) {
|
2020-02-04 12:38:10 +00:00
|
|
|
ret = ctrl->ops->install_queue(req->sq);
|
2018-12-04 01:52:11 +00:00
|
|
|
if (ret) {
|
|
|
|
pr_err("failed to install queue %d cntlid %d ret %x\n",
|
2020-02-04 12:38:09 +00:00
|
|
|
qid, ctrl->cntlid, ret);
|
2020-02-04 12:38:10 +00:00
|
|
|
goto err;
|
2018-12-04 01:52:11 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2016-06-21 16:04:20 +00:00
|
|
|
return 0;
|
2020-02-04 12:38:10 +00:00
|
|
|
|
|
|
|
err:
|
|
|
|
req->sq->ctrl = NULL;
|
|
|
|
return ret;
|
2016-06-21 16:04:20 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void nvmet_execute_admin_connect(struct nvmet_req *req)
|
|
|
|
{
|
|
|
|
struct nvmf_connect_command *c = &req->cmd->connect;
|
|
|
|
struct nvmf_connect_data *d;
|
|
|
|
struct nvmet_ctrl *ctrl = NULL;
|
|
|
|
u16 status = 0;
|
|
|
|
|
2019-10-23 16:35:44 +00:00
|
|
|
if (!nvmet_check_data_len(req, sizeof(struct nvmf_connect_data)))
|
|
|
|
return;
|
|
|
|
|
2017-04-18 23:32:15 +00:00
|
|
|
d = kmalloc(sizeof(*d), GFP_KERNEL);
|
|
|
|
if (!d) {
|
|
|
|
status = NVME_SC_INTERNAL;
|
|
|
|
goto complete;
|
|
|
|
}
|
|
|
|
|
|
|
|
status = nvmet_copy_from_sgl(req, 0, d, sizeof(*d));
|
|
|
|
if (status)
|
|
|
|
goto out;
|
2016-06-21 16:04:20 +00:00
|
|
|
|
|
|
|
/* zero out initial completion result, assign values as needed */
|
2019-04-08 15:39:59 +00:00
|
|
|
req->cqe->result.u32 = 0;
|
2016-06-21 16:04:20 +00:00
|
|
|
|
|
|
|
if (c->recfmt != 0) {
|
|
|
|
pr_warn("invalid connect version (%d).\n",
|
|
|
|
le16_to_cpu(c->recfmt));
|
2018-12-12 23:11:44 +00:00
|
|
|
req->error_loc = offsetof(struct nvmf_connect_command, recfmt);
|
2016-06-21 16:04:20 +00:00
|
|
|
status = NVME_SC_CONNECT_FORMAT | NVME_SC_DNR;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (unlikely(d->cntlid != cpu_to_le16(0xffff))) {
|
|
|
|
pr_warn("connect attempt for invalid controller ID %#x\n",
|
|
|
|
d->cntlid);
|
|
|
|
status = NVME_SC_CONNECT_INVALID_PARAM | NVME_SC_DNR;
|
2019-04-08 15:39:59 +00:00
|
|
|
req->cqe->result.u32 = IPO_IATTR_CONNECT_DATA(cntlid);
|
2016-06-21 16:04:20 +00:00
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
status = nvmet_alloc_ctrl(d->subsysnqn, d->hostnqn, req,
|
2017-04-18 23:32:15 +00:00
|
|
|
le32_to_cpu(c->kato), &ctrl);
|
2018-12-12 23:11:44 +00:00
|
|
|
if (status) {
|
|
|
|
if (status == (NVME_SC_INVALID_FIELD | NVME_SC_DNR))
|
|
|
|
req->error_loc =
|
|
|
|
offsetof(struct nvme_common_command, opcode);
|
2016-06-21 16:04:20 +00:00
|
|
|
goto out;
|
2018-12-12 23:11:44 +00:00
|
|
|
}
|
|
|
|
|
2017-08-30 12:22:59 +00:00
|
|
|
uuid_copy(&ctrl->hostid, &d->hostid);
|
2016-06-21 16:04:20 +00:00
|
|
|
|
|
|
|
status = nvmet_install_queue(ctrl, req);
|
|
|
|
if (status) {
|
|
|
|
nvmet_ctrl_put(ctrl);
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
2016-11-14 12:24:21 +00:00
|
|
|
pr_info("creating controller %d for subsystem %s for NQN %s.\n",
|
|
|
|
ctrl->cntlid, ctrl->subsys->subsysnqn, ctrl->hostnqn);
|
2019-04-08 15:39:59 +00:00
|
|
|
req->cqe->result.u16 = cpu_to_le16(ctrl->cntlid);
|
2016-06-21 16:04:20 +00:00
|
|
|
|
|
|
|
out:
|
2017-04-18 23:32:15 +00:00
|
|
|
kfree(d);
|
|
|
|
complete:
|
2016-06-21 16:04:20 +00:00
|
|
|
nvmet_req_complete(req, status);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void nvmet_execute_io_connect(struct nvmet_req *req)
|
|
|
|
{
|
|
|
|
struct nvmf_connect_command *c = &req->cmd->connect;
|
|
|
|
struct nvmf_connect_data *d;
|
|
|
|
struct nvmet_ctrl *ctrl = NULL;
|
|
|
|
u16 qid = le16_to_cpu(c->qid);
|
|
|
|
u16 status = 0;
|
|
|
|
|
2019-10-23 16:35:44 +00:00
|
|
|
if (!nvmet_check_data_len(req, sizeof(struct nvmf_connect_data)))
|
|
|
|
return;
|
|
|
|
|
2017-04-18 23:32:15 +00:00
|
|
|
d = kmalloc(sizeof(*d), GFP_KERNEL);
|
|
|
|
if (!d) {
|
|
|
|
status = NVME_SC_INTERNAL;
|
|
|
|
goto complete;
|
|
|
|
}
|
|
|
|
|
|
|
|
status = nvmet_copy_from_sgl(req, 0, d, sizeof(*d));
|
|
|
|
if (status)
|
|
|
|
goto out;
|
2016-06-21 16:04:20 +00:00
|
|
|
|
|
|
|
/* zero out initial completion result, assign values as needed */
|
2019-04-08 15:39:59 +00:00
|
|
|
req->cqe->result.u32 = 0;
|
2016-06-21 16:04:20 +00:00
|
|
|
|
|
|
|
if (c->recfmt != 0) {
|
|
|
|
pr_warn("invalid connect version (%d).\n",
|
|
|
|
le16_to_cpu(c->recfmt));
|
|
|
|
status = NVME_SC_CONNECT_FORMAT | NVME_SC_DNR;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
status = nvmet_ctrl_find_get(d->subsysnqn, d->hostnqn,
|
2017-04-18 23:32:15 +00:00
|
|
|
le16_to_cpu(d->cntlid),
|
|
|
|
req, &ctrl);
|
2016-06-21 16:04:20 +00:00
|
|
|
if (status)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
if (unlikely(qid > ctrl->subsys->max_qid)) {
|
|
|
|
pr_warn("invalid queue id (%d)\n", qid);
|
|
|
|
status = NVME_SC_CONNECT_INVALID_PARAM | NVME_SC_DNR;
|
2019-04-08 15:39:59 +00:00
|
|
|
req->cqe->result.u32 = IPO_IATTR_CONNECT_SQE(qid);
|
2016-06-21 16:04:20 +00:00
|
|
|
goto out_ctrl_put;
|
|
|
|
}
|
|
|
|
|
|
|
|
status = nvmet_install_queue(ctrl, req);
|
|
|
|
if (status) {
|
|
|
|
/* pass back cntlid that had the issue of installing queue */
|
2019-04-08 15:39:59 +00:00
|
|
|
req->cqe->result.u16 = cpu_to_le16(ctrl->cntlid);
|
2016-06-21 16:04:20 +00:00
|
|
|
goto out_ctrl_put;
|
|
|
|
}
|
|
|
|
|
2017-12-04 08:47:09 +00:00
|
|
|
pr_debug("adding queue %d to ctrl %d.\n", qid, ctrl->cntlid);
|
2016-06-21 16:04:20 +00:00
|
|
|
|
|
|
|
out:
|
2017-04-18 23:32:15 +00:00
|
|
|
kfree(d);
|
|
|
|
complete:
|
2016-06-21 16:04:20 +00:00
|
|
|
nvmet_req_complete(req, status);
|
|
|
|
return;
|
|
|
|
|
|
|
|
out_ctrl_put:
|
|
|
|
nvmet_ctrl_put(ctrl);
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
2017-02-28 05:21:33 +00:00
|
|
|
u16 nvmet_parse_connect_cmd(struct nvmet_req *req)
|
2016-06-21 16:04:20 +00:00
|
|
|
{
|
|
|
|
struct nvme_command *cmd = req->cmd;
|
|
|
|
|
2019-06-06 05:30:14 +00:00
|
|
|
if (!nvme_is_fabrics(cmd)) {
|
2016-06-21 16:04:20 +00:00
|
|
|
pr_err("invalid command 0x%x on unconnected queue.\n",
|
|
|
|
cmd->fabrics.opcode);
|
2018-12-12 23:11:44 +00:00
|
|
|
req->error_loc = offsetof(struct nvme_common_command, opcode);
|
2016-06-21 16:04:20 +00:00
|
|
|
return NVME_SC_INVALID_OPCODE | NVME_SC_DNR;
|
|
|
|
}
|
|
|
|
if (cmd->fabrics.fctype != nvme_fabrics_type_connect) {
|
|
|
|
pr_err("invalid capsule type 0x%x on unconnected queue.\n",
|
|
|
|
cmd->fabrics.fctype);
|
2018-12-12 23:11:44 +00:00
|
|
|
req->error_loc = offsetof(struct nvmf_common_command, fctype);
|
2016-06-21 16:04:20 +00:00
|
|
|
return NVME_SC_INVALID_OPCODE | NVME_SC_DNR;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (cmd->connect.qid == 0)
|
|
|
|
req->execute = nvmet_execute_admin_connect;
|
|
|
|
else
|
|
|
|
req->execute = nvmet_execute_io_connect;
|
|
|
|
return 0;
|
|
|
|
}
|