struct nvme_command主要用于存储一个nvme命令,包括io命令,或者控制命令,当初始化好一个struct nvme_command后,直接将其下发给nvme设备,nvme设备就会根据它来执行对应操作,其结构如下: struct nvme_command { union { struct nvme_common_command common; struct nvme_rw_command rw; struct nvme_identify identify; ...
nvme 是 NVMe SSD和 NVMe oF 存储命令行管理工具,nvme安装包为 nvme-cli,它依赖Linux内核 IOCTL 系统调用,该调用连接用户层和NVMe驱动层,当用户执行 nvme commands 时,IOCTL 会将命令参数传递至 NVMe common 层,该层代码解析命令并执行命令,将命令封装至 capsule ,进而传递至 NVMe Submission 队列,Controller 处理...
内存模型是指通过执行显式的内存读写操作在网络节点之间传输命令、响应和数据,而消息模型则是指仅通过发送包含command capsules、response capsules和数据的消息在网络节点之间进行传输。消息/内存模型则结合了消息和显式的内存读写操作,以在网络节点之间传输command capsules、response capsules和数据。数据可以选择性地包含...
nvme 是 NVMe SSD和 NVMe oF 存储命令行管理工具,nvme安装包为 nvme-cli,它依赖Linux内核 IOCTL 系统调用,该调用连接用户层和NVMe驱动层,当用户执行 nvme commands 时,IOCTL 会将命令参数传递至 NVMe common 层,该层代码解析命令并执行命令,将命令封装至 capsule ,进而传递至 NVMe Submission 队列,Controller 处理...
struct nvme_command cmd = { }; if (send) cmd.common.opcode = nvme_admin_security_send; else cmd.common.opcode = nvme_admin_security_recv; cmd.common.nsid = 0; cmd.common.cdw10 = cpu_to_le32(((u32)secp) << 24 | ((u32)spsp) << 8); ...
c.common.cdw2[1] =cpu_to_le32(cmd.cdw3); c.common.cdw10[0] =cpu_to_le32(cmd.cdw10); c.common.cdw10[1] =cpu_to_le32(cmd.cdw11); c.common.cdw10[2] =cpu_to_le32(cmd.cdw12); c.common.cdw10[3] =cpu_to_le32(cmd.cdw13); ...
common.opcode = nvme_admin_keep_alive ida_alloc -> idr, ida内核id机制: https://developer.aliyun.com/article/609295 device_initialize(&ctrl->ctrl_device) nvme:将控制器引用计数切换为使用结构设备而不是为字符设备句柄分配单独的结构设备,而是将其嵌入到结构 nvme_ctrl 中并将其用于主控制器引用计数。
A NVME_COMMAND_DWORD0 structure containing parameters that are common for all Admin and NVM commands. NSID The namespace ID that this command applies to. If the namespace ID is not used for the command, then this field should cleared to 0h. If a command is applied to all namespaces acc...
Contains parameters that are common for all Admin commands and NVM commands. This structure is used in the CDW0 field of the NVME_COMMAND structure. Syntax C++ Copiere typedef union { struct { ULONG OPC : 8; ULONG FUSE : 2; ULONG Reserved0 : 5; ULONG PSDT : 1; ULONG CID : 16; ...
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