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1285 lines
32 KiB
1285 lines
32 KiB
// SPDX-License-Identifier: GPL-2.0 |
|
/* |
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* NVMe over Fabrics common host code. |
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* Copyright (c) 2015-2016 HGST, a Western Digital Company. |
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*/ |
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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#include <linux/init.h> |
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#include <linux/miscdevice.h> |
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#include <linux/module.h> |
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#include <linux/mutex.h> |
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#include <linux/parser.h> |
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#include <linux/seq_file.h> |
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#include "nvme.h" |
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#include "fabrics.h" |
|
|
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static LIST_HEAD(nvmf_transports); |
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static DECLARE_RWSEM(nvmf_transports_rwsem); |
|
|
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static LIST_HEAD(nvmf_hosts); |
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static DEFINE_MUTEX(nvmf_hosts_mutex); |
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|
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static struct nvmf_host *nvmf_default_host; |
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|
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static struct nvmf_host *__nvmf_host_find(const char *hostnqn) |
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{ |
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struct nvmf_host *host; |
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|
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list_for_each_entry(host, &nvmf_hosts, list) { |
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if (!strcmp(host->nqn, hostnqn)) |
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return host; |
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} |
|
|
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return NULL; |
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} |
|
|
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static struct nvmf_host *nvmf_host_add(const char *hostnqn) |
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{ |
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struct nvmf_host *host; |
|
|
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mutex_lock(&nvmf_hosts_mutex); |
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host = __nvmf_host_find(hostnqn); |
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if (host) { |
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kref_get(&host->ref); |
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goto out_unlock; |
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} |
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|
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host = kmalloc(sizeof(*host), GFP_KERNEL); |
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if (!host) |
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goto out_unlock; |
|
|
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kref_init(&host->ref); |
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strlcpy(host->nqn, hostnqn, NVMF_NQN_SIZE); |
|
|
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list_add_tail(&host->list, &nvmf_hosts); |
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out_unlock: |
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mutex_unlock(&nvmf_hosts_mutex); |
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return host; |
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} |
|
|
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static struct nvmf_host *nvmf_host_default(void) |
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{ |
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struct nvmf_host *host; |
|
|
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host = kmalloc(sizeof(*host), GFP_KERNEL); |
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if (!host) |
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return NULL; |
|
|
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kref_init(&host->ref); |
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uuid_gen(&host->id); |
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snprintf(host->nqn, NVMF_NQN_SIZE, |
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"nqn.2014-08.org.nvmexpress:uuid:%pUb", &host->id); |
|
|
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mutex_lock(&nvmf_hosts_mutex); |
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list_add_tail(&host->list, &nvmf_hosts); |
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mutex_unlock(&nvmf_hosts_mutex); |
|
|
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return host; |
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} |
|
|
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static void nvmf_host_destroy(struct kref *ref) |
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{ |
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struct nvmf_host *host = container_of(ref, struct nvmf_host, ref); |
|
|
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mutex_lock(&nvmf_hosts_mutex); |
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list_del(&host->list); |
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mutex_unlock(&nvmf_hosts_mutex); |
|
|
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kfree(host); |
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} |
|
|
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static void nvmf_host_put(struct nvmf_host *host) |
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{ |
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if (host) |
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kref_put(&host->ref, nvmf_host_destroy); |
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} |
|
|
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/** |
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* nvmf_get_address() - Get address/port |
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* @ctrl: Host NVMe controller instance which we got the address |
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* @buf: OUTPUT parameter that will contain the address/port |
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* @size: buffer size |
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*/ |
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int nvmf_get_address(struct nvme_ctrl *ctrl, char *buf, int size) |
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{ |
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int len = 0; |
|
|
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if (ctrl->opts->mask & NVMF_OPT_TRADDR) |
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len += scnprintf(buf, size, "traddr=%s", ctrl->opts->traddr); |
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if (ctrl->opts->mask & NVMF_OPT_TRSVCID) |
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len += scnprintf(buf + len, size - len, "%strsvcid=%s", |
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(len) ? "," : "", ctrl->opts->trsvcid); |
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if (ctrl->opts->mask & NVMF_OPT_HOST_TRADDR) |
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len += scnprintf(buf + len, size - len, "%shost_traddr=%s", |
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(len) ? "," : "", ctrl->opts->host_traddr); |
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if (ctrl->opts->mask & NVMF_OPT_HOST_IFACE) |
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len += scnprintf(buf + len, size - len, "%shost_iface=%s", |
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(len) ? "," : "", ctrl->opts->host_iface); |
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len += scnprintf(buf + len, size - len, "\n"); |
|
|
|
return len; |
|
} |
|
EXPORT_SYMBOL_GPL(nvmf_get_address); |
|
|
|
/** |
|
* nvmf_reg_read32() - NVMe Fabrics "Property Get" API function. |
|
* @ctrl: Host NVMe controller instance maintaining the admin |
|
* queue used to submit the property read command to |
|
* the allocated NVMe controller resource on the target system. |
|
* @off: Starting offset value of the targeted property |
|
* register (see the fabrics section of the NVMe standard). |
|
* @val: OUTPUT parameter that will contain the value of |
|
* the property after a successful read. |
|
* |
|
* Used by the host system to retrieve a 32-bit capsule property value |
|
* from an NVMe controller on the target system. |
|
* |
|
* ("Capsule property" is an "PCIe register concept" applied to the |
|
* NVMe fabrics space.) |
|
* |
|
* Return: |
|
* 0: successful read |
|
* > 0: NVMe error status code |
|
* < 0: Linux errno error code |
|
*/ |
|
int nvmf_reg_read32(struct nvme_ctrl *ctrl, u32 off, u32 *val) |
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{ |
|
struct nvme_command cmd = { }; |
|
union nvme_result res; |
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int ret; |
|
|
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cmd.prop_get.opcode = nvme_fabrics_command; |
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cmd.prop_get.fctype = nvme_fabrics_type_property_get; |
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cmd.prop_get.offset = cpu_to_le32(off); |
|
|
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ret = __nvme_submit_sync_cmd(ctrl->fabrics_q, &cmd, &res, NULL, 0, |
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NVME_QID_ANY, 0, 0); |
|
|
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if (ret >= 0) |
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*val = le64_to_cpu(res.u64); |
|
if (unlikely(ret != 0)) |
|
dev_err(ctrl->device, |
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"Property Get error: %d, offset %#x\n", |
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ret > 0 ? ret & ~NVME_SC_DNR : ret, off); |
|
|
|
return ret; |
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} |
|
EXPORT_SYMBOL_GPL(nvmf_reg_read32); |
|
|
|
/** |
|
* nvmf_reg_read64() - NVMe Fabrics "Property Get" API function. |
|
* @ctrl: Host NVMe controller instance maintaining the admin |
|
* queue used to submit the property read command to |
|
* the allocated controller resource on the target system. |
|
* @off: Starting offset value of the targeted property |
|
* register (see the fabrics section of the NVMe standard). |
|
* @val: OUTPUT parameter that will contain the value of |
|
* the property after a successful read. |
|
* |
|
* Used by the host system to retrieve a 64-bit capsule property value |
|
* from an NVMe controller on the target system. |
|
* |
|
* ("Capsule property" is an "PCIe register concept" applied to the |
|
* NVMe fabrics space.) |
|
* |
|
* Return: |
|
* 0: successful read |
|
* > 0: NVMe error status code |
|
* < 0: Linux errno error code |
|
*/ |
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int nvmf_reg_read64(struct nvme_ctrl *ctrl, u32 off, u64 *val) |
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{ |
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struct nvme_command cmd = { }; |
|
union nvme_result res; |
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int ret; |
|
|
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cmd.prop_get.opcode = nvme_fabrics_command; |
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cmd.prop_get.fctype = nvme_fabrics_type_property_get; |
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cmd.prop_get.attrib = 1; |
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cmd.prop_get.offset = cpu_to_le32(off); |
|
|
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ret = __nvme_submit_sync_cmd(ctrl->fabrics_q, &cmd, &res, NULL, 0, |
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NVME_QID_ANY, 0, 0); |
|
|
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if (ret >= 0) |
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*val = le64_to_cpu(res.u64); |
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if (unlikely(ret != 0)) |
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dev_err(ctrl->device, |
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"Property Get error: %d, offset %#x\n", |
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ret > 0 ? ret & ~NVME_SC_DNR : ret, off); |
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return ret; |
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} |
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EXPORT_SYMBOL_GPL(nvmf_reg_read64); |
|
|
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/** |
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* nvmf_reg_write32() - NVMe Fabrics "Property Write" API function. |
|
* @ctrl: Host NVMe controller instance maintaining the admin |
|
* queue used to submit the property read command to |
|
* the allocated NVMe controller resource on the target system. |
|
* @off: Starting offset value of the targeted property |
|
* register (see the fabrics section of the NVMe standard). |
|
* @val: Input parameter that contains the value to be |
|
* written to the property. |
|
* |
|
* Used by the NVMe host system to write a 32-bit capsule property value |
|
* to an NVMe controller on the target system. |
|
* |
|
* ("Capsule property" is an "PCIe register concept" applied to the |
|
* NVMe fabrics space.) |
|
* |
|
* Return: |
|
* 0: successful write |
|
* > 0: NVMe error status code |
|
* < 0: Linux errno error code |
|
*/ |
|
int nvmf_reg_write32(struct nvme_ctrl *ctrl, u32 off, u32 val) |
|
{ |
|
struct nvme_command cmd = { }; |
|
int ret; |
|
|
|
cmd.prop_set.opcode = nvme_fabrics_command; |
|
cmd.prop_set.fctype = nvme_fabrics_type_property_set; |
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cmd.prop_set.attrib = 0; |
|
cmd.prop_set.offset = cpu_to_le32(off); |
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cmd.prop_set.value = cpu_to_le64(val); |
|
|
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ret = __nvme_submit_sync_cmd(ctrl->fabrics_q, &cmd, NULL, NULL, 0, |
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NVME_QID_ANY, 0, 0); |
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if (unlikely(ret)) |
|
dev_err(ctrl->device, |
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"Property Set error: %d, offset %#x\n", |
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ret > 0 ? ret & ~NVME_SC_DNR : ret, off); |
|
return ret; |
|
} |
|
EXPORT_SYMBOL_GPL(nvmf_reg_write32); |
|
|
|
/** |
|
* nvmf_log_connect_error() - Error-parsing-diagnostic print out function for |
|
* connect() errors. |
|
* @ctrl: The specific /dev/nvmeX device that had the error. |
|
* @errval: Error code to be decoded in a more human-friendly |
|
* printout. |
|
* @offset: For use with the NVMe error code |
|
* NVME_SC_CONNECT_INVALID_PARAM. |
|
* @cmd: This is the SQE portion of a submission capsule. |
|
* @data: This is the "Data" portion of a submission capsule. |
|
*/ |
|
static void nvmf_log_connect_error(struct nvme_ctrl *ctrl, |
|
int errval, int offset, struct nvme_command *cmd, |
|
struct nvmf_connect_data *data) |
|
{ |
|
int err_sctype = errval & ~NVME_SC_DNR; |
|
|
|
if (errval < 0) { |
|
dev_err(ctrl->device, |
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"Connect command failed, errno: %d\n", errval); |
|
return; |
|
} |
|
|
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switch (err_sctype) { |
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case NVME_SC_CONNECT_INVALID_PARAM: |
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if (offset >> 16) { |
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char *inv_data = "Connect Invalid Data Parameter"; |
|
|
|
switch (offset & 0xffff) { |
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case (offsetof(struct nvmf_connect_data, cntlid)): |
|
dev_err(ctrl->device, |
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"%s, cntlid: %d\n", |
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inv_data, data->cntlid); |
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break; |
|
case (offsetof(struct nvmf_connect_data, hostnqn)): |
|
dev_err(ctrl->device, |
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"%s, hostnqn \"%s\"\n", |
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inv_data, data->hostnqn); |
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break; |
|
case (offsetof(struct nvmf_connect_data, subsysnqn)): |
|
dev_err(ctrl->device, |
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"%s, subsysnqn \"%s\"\n", |
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inv_data, data->subsysnqn); |
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break; |
|
default: |
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dev_err(ctrl->device, |
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"%s, starting byte offset: %d\n", |
|
inv_data, offset & 0xffff); |
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break; |
|
} |
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} else { |
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char *inv_sqe = "Connect Invalid SQE Parameter"; |
|
|
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switch (offset) { |
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case (offsetof(struct nvmf_connect_command, qid)): |
|
dev_err(ctrl->device, |
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"%s, qid %d\n", |
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inv_sqe, cmd->connect.qid); |
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break; |
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default: |
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dev_err(ctrl->device, |
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"%s, starting byte offset: %d\n", |
|
inv_sqe, offset); |
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} |
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} |
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break; |
|
case NVME_SC_CONNECT_INVALID_HOST: |
|
dev_err(ctrl->device, |
|
"Connect for subsystem %s is not allowed, hostnqn: %s\n", |
|
data->subsysnqn, data->hostnqn); |
|
break; |
|
case NVME_SC_CONNECT_CTRL_BUSY: |
|
dev_err(ctrl->device, |
|
"Connect command failed: controller is busy or not available\n"); |
|
break; |
|
case NVME_SC_CONNECT_FORMAT: |
|
dev_err(ctrl->device, |
|
"Connect incompatible format: %d", |
|
cmd->connect.recfmt); |
|
break; |
|
case NVME_SC_HOST_PATH_ERROR: |
|
dev_err(ctrl->device, |
|
"Connect command failed: host path error\n"); |
|
break; |
|
case NVME_SC_AUTH_REQUIRED: |
|
dev_err(ctrl->device, |
|
"Connect command failed: authentication required\n"); |
|
break; |
|
default: |
|
dev_err(ctrl->device, |
|
"Connect command failed, error wo/DNR bit: %d\n", |
|
err_sctype); |
|
break; |
|
} |
|
} |
|
|
|
/** |
|
* nvmf_connect_admin_queue() - NVMe Fabrics Admin Queue "Connect" |
|
* API function. |
|
* @ctrl: Host nvme controller instance used to request |
|
* a new NVMe controller allocation on the target |
|
* system and establish an NVMe Admin connection to |
|
* that controller. |
|
* |
|
* This function enables an NVMe host device to request a new allocation of |
|
* an NVMe controller resource on a target system as well establish a |
|
* fabrics-protocol connection of the NVMe Admin queue between the |
|
* host system device and the allocated NVMe controller on the |
|
* target system via a NVMe Fabrics "Connect" command. |
|
* |
|
* Return: |
|
* 0: success |
|
* > 0: NVMe error status code |
|
* < 0: Linux errno error code |
|
* |
|
*/ |
|
int nvmf_connect_admin_queue(struct nvme_ctrl *ctrl) |
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{ |
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struct nvme_command cmd = { }; |
|
union nvme_result res; |
|
struct nvmf_connect_data *data; |
|
int ret; |
|
u32 result; |
|
|
|
cmd.connect.opcode = nvme_fabrics_command; |
|
cmd.connect.fctype = nvme_fabrics_type_connect; |
|
cmd.connect.qid = 0; |
|
cmd.connect.sqsize = cpu_to_le16(NVME_AQ_DEPTH - 1); |
|
|
|
/* |
|
* Set keep-alive timeout in seconds granularity (ms * 1000) |
|
*/ |
|
cmd.connect.kato = cpu_to_le32(ctrl->kato * 1000); |
|
|
|
if (ctrl->opts->disable_sqflow) |
|
cmd.connect.cattr |= NVME_CONNECT_DISABLE_SQFLOW; |
|
|
|
data = kzalloc(sizeof(*data), GFP_KERNEL); |
|
if (!data) |
|
return -ENOMEM; |
|
|
|
uuid_copy(&data->hostid, &ctrl->opts->host->id); |
|
data->cntlid = cpu_to_le16(0xffff); |
|
strncpy(data->subsysnqn, ctrl->opts->subsysnqn, NVMF_NQN_SIZE); |
|
strncpy(data->hostnqn, ctrl->opts->host->nqn, NVMF_NQN_SIZE); |
|
|
|
ret = __nvme_submit_sync_cmd(ctrl->fabrics_q, &cmd, &res, |
|
data, sizeof(*data), NVME_QID_ANY, 1, |
|
BLK_MQ_REQ_RESERVED | BLK_MQ_REQ_NOWAIT); |
|
if (ret) { |
|
nvmf_log_connect_error(ctrl, ret, le32_to_cpu(res.u32), |
|
&cmd, data); |
|
goto out_free_data; |
|
} |
|
|
|
result = le32_to_cpu(res.u32); |
|
ctrl->cntlid = result & 0xFFFF; |
|
if ((result >> 16) & 0x3) { |
|
/* Authentication required */ |
|
ret = nvme_auth_negotiate(ctrl, 0); |
|
if (ret) { |
|
dev_warn(ctrl->device, |
|
"qid 0: authentication setup failed\n"); |
|
ret = NVME_SC_AUTH_REQUIRED; |
|
goto out_free_data; |
|
} |
|
ret = nvme_auth_wait(ctrl, 0); |
|
if (ret) |
|
dev_warn(ctrl->device, |
|
"qid 0: authentication failed\n"); |
|
else |
|
dev_info(ctrl->device, |
|
"qid 0: authenticated\n"); |
|
} |
|
out_free_data: |
|
kfree(data); |
|
return ret; |
|
} |
|
EXPORT_SYMBOL_GPL(nvmf_connect_admin_queue); |
|
|
|
/** |
|
* nvmf_connect_io_queue() - NVMe Fabrics I/O Queue "Connect" |
|
* API function. |
|
* @ctrl: Host nvme controller instance used to establish an |
|
* NVMe I/O queue connection to the already allocated NVMe |
|
* controller on the target system. |
|
* @qid: NVMe I/O queue number for the new I/O connection between |
|
* host and target (note qid == 0 is illegal as this is |
|
* the Admin queue, per NVMe standard). |
|
* |
|
* This function issues a fabrics-protocol connection |
|
* of a NVMe I/O queue (via NVMe Fabrics "Connect" command) |
|
* between the host system device and the allocated NVMe controller |
|
* on the target system. |
|
* |
|
* Return: |
|
* 0: success |
|
* > 0: NVMe error status code |
|
* < 0: Linux errno error code |
|
*/ |
|
int nvmf_connect_io_queue(struct nvme_ctrl *ctrl, u16 qid) |
|
{ |
|
struct nvme_command cmd = { }; |
|
struct nvmf_connect_data *data; |
|
union nvme_result res; |
|
int ret; |
|
u32 result; |
|
|
|
cmd.connect.opcode = nvme_fabrics_command; |
|
cmd.connect.fctype = nvme_fabrics_type_connect; |
|
cmd.connect.qid = cpu_to_le16(qid); |
|
cmd.connect.sqsize = cpu_to_le16(ctrl->sqsize); |
|
|
|
if (ctrl->opts->disable_sqflow) |
|
cmd.connect.cattr |= NVME_CONNECT_DISABLE_SQFLOW; |
|
|
|
data = kzalloc(sizeof(*data), GFP_KERNEL); |
|
if (!data) |
|
return -ENOMEM; |
|
|
|
uuid_copy(&data->hostid, &ctrl->opts->host->id); |
|
data->cntlid = cpu_to_le16(ctrl->cntlid); |
|
strncpy(data->subsysnqn, ctrl->opts->subsysnqn, NVMF_NQN_SIZE); |
|
strncpy(data->hostnqn, ctrl->opts->host->nqn, NVMF_NQN_SIZE); |
|
|
|
ret = __nvme_submit_sync_cmd(ctrl->connect_q, &cmd, &res, |
|
data, sizeof(*data), qid, 1, |
|
BLK_MQ_REQ_RESERVED | BLK_MQ_REQ_NOWAIT); |
|
if (ret) { |
|
nvmf_log_connect_error(ctrl, ret, le32_to_cpu(res.u32), |
|
&cmd, data); |
|
} |
|
result = le32_to_cpu(res.u32); |
|
if ((result >> 16) & 2) { |
|
/* Authentication required */ |
|
ret = nvme_auth_negotiate(ctrl, qid); |
|
if (ret) { |
|
dev_warn(ctrl->device, |
|
"qid %d: authentication setup failed\n", qid); |
|
ret = NVME_SC_AUTH_REQUIRED; |
|
} else { |
|
ret = nvme_auth_wait(ctrl, qid); |
|
if (ret) |
|
dev_warn(ctrl->device, |
|
"qid %u: authentication failed\n", qid); |
|
} |
|
} |
|
kfree(data); |
|
return ret; |
|
} |
|
EXPORT_SYMBOL_GPL(nvmf_connect_io_queue); |
|
|
|
bool nvmf_should_reconnect(struct nvme_ctrl *ctrl) |
|
{ |
|
if (ctrl->opts->max_reconnects == -1 || |
|
ctrl->nr_reconnects < ctrl->opts->max_reconnects) |
|
return true; |
|
|
|
return false; |
|
} |
|
EXPORT_SYMBOL_GPL(nvmf_should_reconnect); |
|
|
|
/** |
|
* nvmf_register_transport() - NVMe Fabrics Library registration function. |
|
* @ops: Transport ops instance to be registered to the |
|
* common fabrics library. |
|
* |
|
* API function that registers the type of specific transport fabric |
|
* being implemented to the common NVMe fabrics library. Part of |
|
* the overall init sequence of starting up a fabrics driver. |
|
*/ |
|
int nvmf_register_transport(struct nvmf_transport_ops *ops) |
|
{ |
|
if (!ops->create_ctrl) |
|
return -EINVAL; |
|
|
|
down_write(&nvmf_transports_rwsem); |
|
list_add_tail(&ops->entry, &nvmf_transports); |
|
up_write(&nvmf_transports_rwsem); |
|
|
|
return 0; |
|
} |
|
EXPORT_SYMBOL_GPL(nvmf_register_transport); |
|
|
|
/** |
|
* nvmf_unregister_transport() - NVMe Fabrics Library unregistration function. |
|
* @ops: Transport ops instance to be unregistered from the |
|
* common fabrics library. |
|
* |
|
* Fabrics API function that unregisters the type of specific transport |
|
* fabric being implemented from the common NVMe fabrics library. |
|
* Part of the overall exit sequence of unloading the implemented driver. |
|
*/ |
|
void nvmf_unregister_transport(struct nvmf_transport_ops *ops) |
|
{ |
|
down_write(&nvmf_transports_rwsem); |
|
list_del(&ops->entry); |
|
up_write(&nvmf_transports_rwsem); |
|
} |
|
EXPORT_SYMBOL_GPL(nvmf_unregister_transport); |
|
|
|
static struct nvmf_transport_ops *nvmf_lookup_transport( |
|
struct nvmf_ctrl_options *opts) |
|
{ |
|
struct nvmf_transport_ops *ops; |
|
|
|
lockdep_assert_held(&nvmf_transports_rwsem); |
|
|
|
list_for_each_entry(ops, &nvmf_transports, entry) { |
|
if (strcmp(ops->name, opts->transport) == 0) |
|
return ops; |
|
} |
|
|
|
return NULL; |
|
} |
|
|
|
static const match_table_t opt_tokens = { |
|
{ NVMF_OPT_TRANSPORT, "transport=%s" }, |
|
{ NVMF_OPT_TRADDR, "traddr=%s" }, |
|
{ NVMF_OPT_TRSVCID, "trsvcid=%s" }, |
|
{ NVMF_OPT_NQN, "nqn=%s" }, |
|
{ NVMF_OPT_QUEUE_SIZE, "queue_size=%d" }, |
|
{ NVMF_OPT_NR_IO_QUEUES, "nr_io_queues=%d" }, |
|
{ NVMF_OPT_RECONNECT_DELAY, "reconnect_delay=%d" }, |
|
{ NVMF_OPT_CTRL_LOSS_TMO, "ctrl_loss_tmo=%d" }, |
|
{ NVMF_OPT_KATO, "keep_alive_tmo=%d" }, |
|
{ NVMF_OPT_HOSTNQN, "hostnqn=%s" }, |
|
{ NVMF_OPT_HOST_TRADDR, "host_traddr=%s" }, |
|
{ NVMF_OPT_HOST_IFACE, "host_iface=%s" }, |
|
{ NVMF_OPT_HOST_ID, "hostid=%s" }, |
|
{ NVMF_OPT_DUP_CONNECT, "duplicate_connect" }, |
|
{ NVMF_OPT_DISABLE_SQFLOW, "disable_sqflow" }, |
|
{ NVMF_OPT_HDR_DIGEST, "hdr_digest" }, |
|
{ NVMF_OPT_DATA_DIGEST, "data_digest" }, |
|
{ NVMF_OPT_NR_WRITE_QUEUES, "nr_write_queues=%d" }, |
|
{ NVMF_OPT_NR_POLL_QUEUES, "nr_poll_queues=%d" }, |
|
{ NVMF_OPT_TOS, "tos=%d" }, |
|
{ NVMF_OPT_FAIL_FAST_TMO, "fast_io_fail_tmo=%d" }, |
|
{ NVMF_OPT_DISCOVERY, "discovery" }, |
|
{ NVMF_OPT_DHCHAP_SECRET, "dhchap_secret=%s" }, |
|
{ NVMF_OPT_DHCHAP_CTRL_SECRET, "dhchap_ctrl_secret=%s" }, |
|
{ NVMF_OPT_ERR, NULL } |
|
}; |
|
|
|
static int nvmf_parse_options(struct nvmf_ctrl_options *opts, |
|
const char *buf) |
|
{ |
|
substring_t args[MAX_OPT_ARGS]; |
|
char *options, *o, *p; |
|
int token, ret = 0; |
|
size_t nqnlen = 0; |
|
int ctrl_loss_tmo = NVMF_DEF_CTRL_LOSS_TMO; |
|
uuid_t hostid; |
|
|
|
/* Set defaults */ |
|
opts->queue_size = NVMF_DEF_QUEUE_SIZE; |
|
opts->nr_io_queues = num_online_cpus(); |
|
opts->reconnect_delay = NVMF_DEF_RECONNECT_DELAY; |
|
opts->kato = 0; |
|
opts->duplicate_connect = false; |
|
opts->fast_io_fail_tmo = NVMF_DEF_FAIL_FAST_TMO; |
|
opts->hdr_digest = false; |
|
opts->data_digest = false; |
|
opts->tos = -1; /* < 0 == use transport default */ |
|
|
|
options = o = kstrdup(buf, GFP_KERNEL); |
|
if (!options) |
|
return -ENOMEM; |
|
|
|
uuid_gen(&hostid); |
|
|
|
while ((p = strsep(&o, ",\n")) != NULL) { |
|
if (!*p) |
|
continue; |
|
|
|
token = match_token(p, opt_tokens, args); |
|
opts->mask |= token; |
|
switch (token) { |
|
case NVMF_OPT_TRANSPORT: |
|
p = match_strdup(args); |
|
if (!p) { |
|
ret = -ENOMEM; |
|
goto out; |
|
} |
|
kfree(opts->transport); |
|
opts->transport = p; |
|
break; |
|
case NVMF_OPT_NQN: |
|
p = match_strdup(args); |
|
if (!p) { |
|
ret = -ENOMEM; |
|
goto out; |
|
} |
|
kfree(opts->subsysnqn); |
|
opts->subsysnqn = p; |
|
nqnlen = strlen(opts->subsysnqn); |
|
if (nqnlen >= NVMF_NQN_SIZE) { |
|
pr_err("%s needs to be < %d bytes\n", |
|
opts->subsysnqn, NVMF_NQN_SIZE); |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
opts->discovery_nqn = |
|
!(strcmp(opts->subsysnqn, |
|
NVME_DISC_SUBSYS_NAME)); |
|
break; |
|
case NVMF_OPT_TRADDR: |
|
p = match_strdup(args); |
|
if (!p) { |
|
ret = -ENOMEM; |
|
goto out; |
|
} |
|
kfree(opts->traddr); |
|
opts->traddr = p; |
|
break; |
|
case NVMF_OPT_TRSVCID: |
|
p = match_strdup(args); |
|
if (!p) { |
|
ret = -ENOMEM; |
|
goto out; |
|
} |
|
kfree(opts->trsvcid); |
|
opts->trsvcid = p; |
|
break; |
|
case NVMF_OPT_QUEUE_SIZE: |
|
if (match_int(args, &token)) { |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
if (token < NVMF_MIN_QUEUE_SIZE || |
|
token > NVMF_MAX_QUEUE_SIZE) { |
|
pr_err("Invalid queue_size %d\n", token); |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
opts->queue_size = token; |
|
break; |
|
case NVMF_OPT_NR_IO_QUEUES: |
|
if (match_int(args, &token)) { |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
if (token <= 0) { |
|
pr_err("Invalid number of IOQs %d\n", token); |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
if (opts->discovery_nqn) { |
|
pr_debug("Ignoring nr_io_queues value for discovery controller\n"); |
|
break; |
|
} |
|
|
|
opts->nr_io_queues = min_t(unsigned int, |
|
num_online_cpus(), token); |
|
break; |
|
case NVMF_OPT_KATO: |
|
if (match_int(args, &token)) { |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
|
|
if (token < 0) { |
|
pr_err("Invalid keep_alive_tmo %d\n", token); |
|
ret = -EINVAL; |
|
goto out; |
|
} else if (token == 0 && !opts->discovery_nqn) { |
|
/* Allowed for debug */ |
|
pr_warn("keep_alive_tmo 0 won't execute keep alives!!!\n"); |
|
} |
|
opts->kato = token; |
|
break; |
|
case NVMF_OPT_CTRL_LOSS_TMO: |
|
if (match_int(args, &token)) { |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
|
|
if (token < 0) |
|
pr_warn("ctrl_loss_tmo < 0 will reconnect forever\n"); |
|
ctrl_loss_tmo = token; |
|
break; |
|
case NVMF_OPT_FAIL_FAST_TMO: |
|
if (match_int(args, &token)) { |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
|
|
if (token >= 0) |
|
pr_warn("I/O fail on reconnect controller after %d sec\n", |
|
token); |
|
else |
|
token = -1; |
|
|
|
opts->fast_io_fail_tmo = token; |
|
break; |
|
case NVMF_OPT_HOSTNQN: |
|
if (opts->host) { |
|
pr_err("hostnqn already user-assigned: %s\n", |
|
opts->host->nqn); |
|
ret = -EADDRINUSE; |
|
goto out; |
|
} |
|
p = match_strdup(args); |
|
if (!p) { |
|
ret = -ENOMEM; |
|
goto out; |
|
} |
|
nqnlen = strlen(p); |
|
if (nqnlen >= NVMF_NQN_SIZE) { |
|
pr_err("%s needs to be < %d bytes\n", |
|
p, NVMF_NQN_SIZE); |
|
kfree(p); |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
opts->host = nvmf_host_add(p); |
|
kfree(p); |
|
if (!opts->host) { |
|
ret = -ENOMEM; |
|
goto out; |
|
} |
|
break; |
|
case NVMF_OPT_RECONNECT_DELAY: |
|
if (match_int(args, &token)) { |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
if (token <= 0) { |
|
pr_err("Invalid reconnect_delay %d\n", token); |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
opts->reconnect_delay = token; |
|
break; |
|
case NVMF_OPT_HOST_TRADDR: |
|
p = match_strdup(args); |
|
if (!p) { |
|
ret = -ENOMEM; |
|
goto out; |
|
} |
|
kfree(opts->host_traddr); |
|
opts->host_traddr = p; |
|
break; |
|
case NVMF_OPT_HOST_IFACE: |
|
p = match_strdup(args); |
|
if (!p) { |
|
ret = -ENOMEM; |
|
goto out; |
|
} |
|
kfree(opts->host_iface); |
|
opts->host_iface = p; |
|
break; |
|
case NVMF_OPT_HOST_ID: |
|
p = match_strdup(args); |
|
if (!p) { |
|
ret = -ENOMEM; |
|
goto out; |
|
} |
|
ret = uuid_parse(p, &hostid); |
|
if (ret) { |
|
pr_err("Invalid hostid %s\n", p); |
|
ret = -EINVAL; |
|
kfree(p); |
|
goto out; |
|
} |
|
kfree(p); |
|
break; |
|
case NVMF_OPT_DUP_CONNECT: |
|
opts->duplicate_connect = true; |
|
break; |
|
case NVMF_OPT_DISABLE_SQFLOW: |
|
opts->disable_sqflow = true; |
|
break; |
|
case NVMF_OPT_HDR_DIGEST: |
|
opts->hdr_digest = true; |
|
break; |
|
case NVMF_OPT_DATA_DIGEST: |
|
opts->data_digest = true; |
|
break; |
|
case NVMF_OPT_NR_WRITE_QUEUES: |
|
if (match_int(args, &token)) { |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
if (token <= 0) { |
|
pr_err("Invalid nr_write_queues %d\n", token); |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
opts->nr_write_queues = token; |
|
break; |
|
case NVMF_OPT_NR_POLL_QUEUES: |
|
if (match_int(args, &token)) { |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
if (token <= 0) { |
|
pr_err("Invalid nr_poll_queues %d\n", token); |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
opts->nr_poll_queues = token; |
|
break; |
|
case NVMF_OPT_TOS: |
|
if (match_int(args, &token)) { |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
if (token < 0) { |
|
pr_err("Invalid type of service %d\n", token); |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
if (token > 255) { |
|
pr_warn("Clamping type of service to 255\n"); |
|
token = 255; |
|
} |
|
opts->tos = token; |
|
break; |
|
case NVMF_OPT_DISCOVERY: |
|
opts->discovery_nqn = true; |
|
break; |
|
case NVMF_OPT_DHCHAP_SECRET: |
|
p = match_strdup(args); |
|
if (!p) { |
|
ret = -ENOMEM; |
|
goto out; |
|
} |
|
if (strlen(p) < 11 || strncmp(p, "DHHC-1:", 7)) { |
|
pr_err("Invalid DH-CHAP secret %s\n", p); |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
kfree(opts->dhchap_secret); |
|
opts->dhchap_secret = p; |
|
break; |
|
case NVMF_OPT_DHCHAP_CTRL_SECRET: |
|
p = match_strdup(args); |
|
if (!p) { |
|
ret = -ENOMEM; |
|
goto out; |
|
} |
|
if (strlen(p) < 11 || strncmp(p, "DHHC-1:", 7)) { |
|
pr_err("Invalid DH-CHAP secret %s\n", p); |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
kfree(opts->dhchap_ctrl_secret); |
|
opts->dhchap_ctrl_secret = p; |
|
break; |
|
default: |
|
pr_warn("unknown parameter or missing value '%s' in ctrl creation request\n", |
|
p); |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
} |
|
|
|
if (opts->discovery_nqn) { |
|
opts->nr_io_queues = 0; |
|
opts->nr_write_queues = 0; |
|
opts->nr_poll_queues = 0; |
|
opts->duplicate_connect = true; |
|
} else { |
|
if (!opts->kato) |
|
opts->kato = NVME_DEFAULT_KATO; |
|
} |
|
if (ctrl_loss_tmo < 0) { |
|
opts->max_reconnects = -1; |
|
} else { |
|
opts->max_reconnects = DIV_ROUND_UP(ctrl_loss_tmo, |
|
opts->reconnect_delay); |
|
if (ctrl_loss_tmo < opts->fast_io_fail_tmo) |
|
pr_warn("failfast tmo (%d) larger than controller loss tmo (%d)\n", |
|
opts->fast_io_fail_tmo, ctrl_loss_tmo); |
|
} |
|
|
|
if (!opts->host) { |
|
kref_get(&nvmf_default_host->ref); |
|
opts->host = nvmf_default_host; |
|
} |
|
|
|
uuid_copy(&opts->host->id, &hostid); |
|
|
|
out: |
|
kfree(options); |
|
return ret; |
|
} |
|
|
|
static int nvmf_check_required_opts(struct nvmf_ctrl_options *opts, |
|
unsigned int required_opts) |
|
{ |
|
if ((opts->mask & required_opts) != required_opts) { |
|
unsigned int i; |
|
|
|
for (i = 0; i < ARRAY_SIZE(opt_tokens); i++) { |
|
if ((opt_tokens[i].token & required_opts) && |
|
!(opt_tokens[i].token & opts->mask)) { |
|
pr_warn("missing parameter '%s'\n", |
|
opt_tokens[i].pattern); |
|
} |
|
} |
|
|
|
return -EINVAL; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
bool nvmf_ip_options_match(struct nvme_ctrl *ctrl, |
|
struct nvmf_ctrl_options *opts) |
|
{ |
|
if (!nvmf_ctlr_matches_baseopts(ctrl, opts) || |
|
strcmp(opts->traddr, ctrl->opts->traddr) || |
|
strcmp(opts->trsvcid, ctrl->opts->trsvcid)) |
|
return false; |
|
|
|
/* |
|
* Checking the local address is rough. In most cases, none is specified |
|
* and the host port is selected by the stack. |
|
* |
|
* Assume no match if: |
|
* - local address is specified and address is not the same |
|
* - local address is not specified but remote is, or vice versa |
|
* (admin using specific host_traddr when it matters). |
|
*/ |
|
if ((opts->mask & NVMF_OPT_HOST_TRADDR) && |
|
(ctrl->opts->mask & NVMF_OPT_HOST_TRADDR)) { |
|
if (strcmp(opts->host_traddr, ctrl->opts->host_traddr)) |
|
return false; |
|
} else if ((opts->mask & NVMF_OPT_HOST_TRADDR) || |
|
(ctrl->opts->mask & NVMF_OPT_HOST_TRADDR)) { |
|
return false; |
|
} |
|
|
|
return true; |
|
} |
|
EXPORT_SYMBOL_GPL(nvmf_ip_options_match); |
|
|
|
static int nvmf_check_allowed_opts(struct nvmf_ctrl_options *opts, |
|
unsigned int allowed_opts) |
|
{ |
|
if (opts->mask & ~allowed_opts) { |
|
unsigned int i; |
|
|
|
for (i = 0; i < ARRAY_SIZE(opt_tokens); i++) { |
|
if ((opt_tokens[i].token & opts->mask) && |
|
(opt_tokens[i].token & ~allowed_opts)) { |
|
pr_warn("invalid parameter '%s'\n", |
|
opt_tokens[i].pattern); |
|
} |
|
} |
|
|
|
return -EINVAL; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
void nvmf_free_options(struct nvmf_ctrl_options *opts) |
|
{ |
|
nvmf_host_put(opts->host); |
|
kfree(opts->transport); |
|
kfree(opts->traddr); |
|
kfree(opts->trsvcid); |
|
kfree(opts->subsysnqn); |
|
kfree(opts->host_traddr); |
|
kfree(opts->host_iface); |
|
kfree(opts->dhchap_secret); |
|
kfree(opts->dhchap_ctrl_secret); |
|
kfree(opts); |
|
} |
|
EXPORT_SYMBOL_GPL(nvmf_free_options); |
|
|
|
#define NVMF_REQUIRED_OPTS (NVMF_OPT_TRANSPORT | NVMF_OPT_NQN) |
|
#define NVMF_ALLOWED_OPTS (NVMF_OPT_QUEUE_SIZE | NVMF_OPT_NR_IO_QUEUES | \ |
|
NVMF_OPT_KATO | NVMF_OPT_HOSTNQN | \ |
|
NVMF_OPT_HOST_ID | NVMF_OPT_DUP_CONNECT |\ |
|
NVMF_OPT_DISABLE_SQFLOW | NVMF_OPT_DISCOVERY |\ |
|
NVMF_OPT_FAIL_FAST_TMO | NVMF_OPT_DHCHAP_SECRET |\ |
|
NVMF_OPT_DHCHAP_CTRL_SECRET) |
|
|
|
static struct nvme_ctrl * |
|
nvmf_create_ctrl(struct device *dev, const char *buf) |
|
{ |
|
struct nvmf_ctrl_options *opts; |
|
struct nvmf_transport_ops *ops; |
|
struct nvme_ctrl *ctrl; |
|
int ret; |
|
|
|
opts = kzalloc(sizeof(*opts), GFP_KERNEL); |
|
if (!opts) |
|
return ERR_PTR(-ENOMEM); |
|
|
|
ret = nvmf_parse_options(opts, buf); |
|
if (ret) |
|
goto out_free_opts; |
|
|
|
|
|
request_module("nvme-%s", opts->transport); |
|
|
|
/* |
|
* Check the generic options first as we need a valid transport for |
|
* the lookup below. Then clear the generic flags so that transport |
|
* drivers don't have to care about them. |
|
*/ |
|
ret = nvmf_check_required_opts(opts, NVMF_REQUIRED_OPTS); |
|
if (ret) |
|
goto out_free_opts; |
|
opts->mask &= ~NVMF_REQUIRED_OPTS; |
|
|
|
down_read(&nvmf_transports_rwsem); |
|
ops = nvmf_lookup_transport(opts); |
|
if (!ops) { |
|
pr_info("no handler found for transport %s.\n", |
|
opts->transport); |
|
ret = -EINVAL; |
|
goto out_unlock; |
|
} |
|
|
|
if (!try_module_get(ops->module)) { |
|
ret = -EBUSY; |
|
goto out_unlock; |
|
} |
|
up_read(&nvmf_transports_rwsem); |
|
|
|
ret = nvmf_check_required_opts(opts, ops->required_opts); |
|
if (ret) |
|
goto out_module_put; |
|
ret = nvmf_check_allowed_opts(opts, NVMF_ALLOWED_OPTS | |
|
ops->allowed_opts | ops->required_opts); |
|
if (ret) |
|
goto out_module_put; |
|
|
|
ctrl = ops->create_ctrl(dev, opts); |
|
if (IS_ERR(ctrl)) { |
|
ret = PTR_ERR(ctrl); |
|
goto out_module_put; |
|
} |
|
|
|
module_put(ops->module); |
|
return ctrl; |
|
|
|
out_module_put: |
|
module_put(ops->module); |
|
goto out_free_opts; |
|
out_unlock: |
|
up_read(&nvmf_transports_rwsem); |
|
out_free_opts: |
|
nvmf_free_options(opts); |
|
return ERR_PTR(ret); |
|
} |
|
|
|
static struct class *nvmf_class; |
|
static struct device *nvmf_device; |
|
static DEFINE_MUTEX(nvmf_dev_mutex); |
|
|
|
static ssize_t nvmf_dev_write(struct file *file, const char __user *ubuf, |
|
size_t count, loff_t *pos) |
|
{ |
|
struct seq_file *seq_file = file->private_data; |
|
struct nvme_ctrl *ctrl; |
|
const char *buf; |
|
int ret = 0; |
|
|
|
if (count > PAGE_SIZE) |
|
return -ENOMEM; |
|
|
|
buf = memdup_user_nul(ubuf, count); |
|
if (IS_ERR(buf)) |
|
return PTR_ERR(buf); |
|
|
|
mutex_lock(&nvmf_dev_mutex); |
|
if (seq_file->private) { |
|
ret = -EINVAL; |
|
goto out_unlock; |
|
} |
|
|
|
ctrl = nvmf_create_ctrl(nvmf_device, buf); |
|
if (IS_ERR(ctrl)) { |
|
ret = PTR_ERR(ctrl); |
|
goto out_unlock; |
|
} |
|
|
|
seq_file->private = ctrl; |
|
|
|
out_unlock: |
|
mutex_unlock(&nvmf_dev_mutex); |
|
kfree(buf); |
|
return ret ? ret : count; |
|
} |
|
|
|
static void __nvmf_concat_opt_tokens(struct seq_file *seq_file) |
|
{ |
|
const struct match_token *tok; |
|
int idx; |
|
|
|
/* |
|
* Add dummy entries for instance and cntlid to |
|
* signal an invalid/non-existing controller |
|
*/ |
|
seq_puts(seq_file, "instance=-1,cntlid=-1"); |
|
for (idx = 0; idx < ARRAY_SIZE(opt_tokens); idx++) { |
|
tok = &opt_tokens[idx]; |
|
if (tok->token == NVMF_OPT_ERR) |
|
continue; |
|
seq_puts(seq_file, ","); |
|
seq_puts(seq_file, tok->pattern); |
|
} |
|
seq_puts(seq_file, "\n"); |
|
} |
|
|
|
static int nvmf_dev_show(struct seq_file *seq_file, void *private) |
|
{ |
|
struct nvme_ctrl *ctrl; |
|
|
|
mutex_lock(&nvmf_dev_mutex); |
|
ctrl = seq_file->private; |
|
if (!ctrl) { |
|
__nvmf_concat_opt_tokens(seq_file); |
|
goto out_unlock; |
|
} |
|
|
|
seq_printf(seq_file, "instance=%d,cntlid=%d\n", |
|
ctrl->instance, ctrl->cntlid); |
|
|
|
out_unlock: |
|
mutex_unlock(&nvmf_dev_mutex); |
|
return 0; |
|
} |
|
|
|
static int nvmf_dev_open(struct inode *inode, struct file *file) |
|
{ |
|
/* |
|
* The miscdevice code initializes file->private_data, but doesn't |
|
* make use of it later. |
|
*/ |
|
file->private_data = NULL; |
|
return single_open(file, nvmf_dev_show, NULL); |
|
} |
|
|
|
static int nvmf_dev_release(struct inode *inode, struct file *file) |
|
{ |
|
struct seq_file *seq_file = file->private_data; |
|
struct nvme_ctrl *ctrl = seq_file->private; |
|
|
|
if (ctrl) |
|
nvme_put_ctrl(ctrl); |
|
return single_release(inode, file); |
|
} |
|
|
|
static const struct file_operations nvmf_dev_fops = { |
|
.owner = THIS_MODULE, |
|
.write = nvmf_dev_write, |
|
.read = seq_read, |
|
.open = nvmf_dev_open, |
|
.release = nvmf_dev_release, |
|
}; |
|
|
|
static struct miscdevice nvmf_misc = { |
|
.minor = MISC_DYNAMIC_MINOR, |
|
.name = "nvme-fabrics", |
|
.fops = &nvmf_dev_fops, |
|
}; |
|
|
|
static int __init nvmf_init(void) |
|
{ |
|
int ret; |
|
|
|
nvmf_default_host = nvmf_host_default(); |
|
if (!nvmf_default_host) |
|
return -ENOMEM; |
|
|
|
nvmf_class = class_create(THIS_MODULE, "nvme-fabrics"); |
|
if (IS_ERR(nvmf_class)) { |
|
pr_err("couldn't register class nvme-fabrics\n"); |
|
ret = PTR_ERR(nvmf_class); |
|
goto out_free_host; |
|
} |
|
|
|
nvmf_device = |
|
device_create(nvmf_class, NULL, MKDEV(0, 0), NULL, "ctl"); |
|
if (IS_ERR(nvmf_device)) { |
|
pr_err("couldn't create nvme-fabrics device!\n"); |
|
ret = PTR_ERR(nvmf_device); |
|
goto out_destroy_class; |
|
} |
|
|
|
ret = misc_register(&nvmf_misc); |
|
if (ret) { |
|
pr_err("couldn't register misc device: %d\n", ret); |
|
goto out_destroy_device; |
|
} |
|
|
|
return 0; |
|
|
|
out_destroy_device: |
|
device_destroy(nvmf_class, MKDEV(0, 0)); |
|
out_destroy_class: |
|
class_destroy(nvmf_class); |
|
out_free_host: |
|
nvmf_host_put(nvmf_default_host); |
|
return ret; |
|
} |
|
|
|
static void __exit nvmf_exit(void) |
|
{ |
|
misc_deregister(&nvmf_misc); |
|
device_destroy(nvmf_class, MKDEV(0, 0)); |
|
class_destroy(nvmf_class); |
|
nvmf_host_put(nvmf_default_host); |
|
|
|
BUILD_BUG_ON(sizeof(struct nvmf_common_command) != 64); |
|
BUILD_BUG_ON(sizeof(struct nvmf_connect_command) != 64); |
|
BUILD_BUG_ON(sizeof(struct nvmf_property_get_command) != 64); |
|
BUILD_BUG_ON(sizeof(struct nvmf_property_set_command) != 64); |
|
BUILD_BUG_ON(sizeof(struct nvmf_auth_send_command) != 64); |
|
BUILD_BUG_ON(sizeof(struct nvmf_auth_receive_command) != 64); |
|
BUILD_BUG_ON(sizeof(struct nvmf_connect_data) != 1024); |
|
BUILD_BUG_ON(sizeof(struct nvmf_auth_dhchap_negotiate_data) != 8); |
|
BUILD_BUG_ON(sizeof(struct nvmf_auth_dhchap_challenge_data) != 16); |
|
BUILD_BUG_ON(sizeof(struct nvmf_auth_dhchap_reply_data) != 16); |
|
BUILD_BUG_ON(sizeof(struct nvmf_auth_dhchap_success1_data) != 16); |
|
BUILD_BUG_ON(sizeof(struct nvmf_auth_dhchap_success2_data) != 16); |
|
} |
|
|
|
MODULE_LICENSE("GPL v2"); |
|
|
|
module_init(nvmf_init); |
|
module_exit(nvmf_exit);
|
|
|