15d8762d5SChristoph Hellwig /* SPDX-License-Identifier: GPL-2.0 */ 2931a6de4SSagi Grimberg /* 3931a6de4SSagi Grimberg * Copyright (c) 2015 Mellanox Technologies. All rights reserved. 4931a6de4SSagi Grimberg */ 5931a6de4SSagi Grimberg 6931a6de4SSagi Grimberg #ifndef _LINUX_NVME_RDMA_H 7931a6de4SSagi Grimberg #define _LINUX_NVME_RDMA_H 8931a6de4SSagi Grimberg 9931a6de4SSagi Grimberg enum nvme_rdma_cm_fmt { 10931a6de4SSagi Grimberg NVME_RDMA_CM_FMT_1_0 = 0x0, 11931a6de4SSagi Grimberg }; 12931a6de4SSagi Grimberg 13931a6de4SSagi Grimberg enum nvme_rdma_cm_status { 14931a6de4SSagi Grimberg NVME_RDMA_CM_INVALID_LEN = 0x01, 15931a6de4SSagi Grimberg NVME_RDMA_CM_INVALID_RECFMT = 0x02, 16931a6de4SSagi Grimberg NVME_RDMA_CM_INVALID_QID = 0x03, 17931a6de4SSagi Grimberg NVME_RDMA_CM_INVALID_HSQSIZE = 0x04, 18931a6de4SSagi Grimberg NVME_RDMA_CM_INVALID_HRQSIZE = 0x05, 19931a6de4SSagi Grimberg NVME_RDMA_CM_NO_RSC = 0x06, 20931a6de4SSagi Grimberg NVME_RDMA_CM_INVALID_IRD = 0x07, 21931a6de4SSagi Grimberg NVME_RDMA_CM_INVALID_ORD = 0x08, 22931a6de4SSagi Grimberg }; 23931a6de4SSagi Grimberg 243ee80c3dSMax Gurtovoy static inline const char *nvme_rdma_cm_msg(enum nvme_rdma_cm_status status) 253ee80c3dSMax Gurtovoy { 263ee80c3dSMax Gurtovoy switch (status) { 273ee80c3dSMax Gurtovoy case NVME_RDMA_CM_INVALID_LEN: 283ee80c3dSMax Gurtovoy return "invalid length"; 293ee80c3dSMax Gurtovoy case NVME_RDMA_CM_INVALID_RECFMT: 303ee80c3dSMax Gurtovoy return "invalid record format"; 313ee80c3dSMax Gurtovoy case NVME_RDMA_CM_INVALID_QID: 323ee80c3dSMax Gurtovoy return "invalid queue ID"; 333ee80c3dSMax Gurtovoy case NVME_RDMA_CM_INVALID_HSQSIZE: 343ee80c3dSMax Gurtovoy return "invalid host SQ size"; 353ee80c3dSMax Gurtovoy case NVME_RDMA_CM_INVALID_HRQSIZE: 363ee80c3dSMax Gurtovoy return "invalid host RQ size"; 373ee80c3dSMax Gurtovoy case NVME_RDMA_CM_NO_RSC: 383ee80c3dSMax Gurtovoy return "resource not found"; 393ee80c3dSMax Gurtovoy case NVME_RDMA_CM_INVALID_IRD: 403ee80c3dSMax Gurtovoy return "invalid IRD"; 413ee80c3dSMax Gurtovoy case NVME_RDMA_CM_INVALID_ORD: 423ee80c3dSMax Gurtovoy return "Invalid ORD"; 433ee80c3dSMax Gurtovoy default: 443ee80c3dSMax Gurtovoy return "unrecognized reason"; 453ee80c3dSMax Gurtovoy } 463ee80c3dSMax Gurtovoy } 473ee80c3dSMax Gurtovoy 48931a6de4SSagi Grimberg /** 49931a6de4SSagi Grimberg * struct nvme_rdma_cm_req - rdma connect request 50931a6de4SSagi Grimberg * 51931a6de4SSagi Grimberg * @recfmt: format of the RDMA Private Data 52931a6de4SSagi Grimberg * @qid: queue Identifier for the Admin or I/O Queue 53931a6de4SSagi Grimberg * @hrqsize: host receive queue size to be created 54931a6de4SSagi Grimberg * @hsqsize: host send queue size to be created 55931a6de4SSagi Grimberg */ 56931a6de4SSagi Grimberg struct nvme_rdma_cm_req { 57931a6de4SSagi Grimberg __le16 recfmt; 58931a6de4SSagi Grimberg __le16 qid; 59931a6de4SSagi Grimberg __le16 hrqsize; 60931a6de4SSagi Grimberg __le16 hsqsize; 61931a6de4SSagi Grimberg u8 rsvd[24]; 62931a6de4SSagi Grimberg }; 63931a6de4SSagi Grimberg 64931a6de4SSagi Grimberg /** 65931a6de4SSagi Grimberg * struct nvme_rdma_cm_rep - rdma connect reply 66931a6de4SSagi Grimberg * 67931a6de4SSagi Grimberg * @recfmt: format of the RDMA Private Data 68931a6de4SSagi Grimberg * @crqsize: controller receive queue size 69931a6de4SSagi Grimberg */ 70931a6de4SSagi Grimberg struct nvme_rdma_cm_rep { 71931a6de4SSagi Grimberg __le16 recfmt; 72931a6de4SSagi Grimberg __le16 crqsize; 73931a6de4SSagi Grimberg u8 rsvd[28]; 74931a6de4SSagi Grimberg }; 75931a6de4SSagi Grimberg 76931a6de4SSagi Grimberg /** 77931a6de4SSagi Grimberg * struct nvme_rdma_cm_rej - rdma connect reject 78931a6de4SSagi Grimberg * 79931a6de4SSagi Grimberg * @recfmt: format of the RDMA Private Data 80*82bebbdeSMinwoo Im * @sts: error status for the associated connect request 81931a6de4SSagi Grimberg */ 82931a6de4SSagi Grimberg struct nvme_rdma_cm_rej { 83931a6de4SSagi Grimberg __le16 recfmt; 84931a6de4SSagi Grimberg __le16 sts; 85931a6de4SSagi Grimberg }; 86931a6de4SSagi Grimberg 87931a6de4SSagi Grimberg #endif /* _LINUX_NVME_RDMA_H */ 88