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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * Copyright (c) 2015 Mellanox Technologies. All rights reserved.4 */5 6#ifndef _LINUX_NVME_RDMA_H7#define _LINUX_NVME_RDMA_H8 9#define NVME_RDMA_IP_PORT 442010 11#define NVME_RDMA_MAX_QUEUE_SIZE 25612#define NVME_RDMA_MAX_METADATA_QUEUE_SIZE 12813#define NVME_RDMA_DEFAULT_QUEUE_SIZE 12814 15enum nvme_rdma_cm_fmt {16 NVME_RDMA_CM_FMT_1_0 = 0x0,17};18 19enum nvme_rdma_cm_status {20 NVME_RDMA_CM_INVALID_LEN = 0x01,21 NVME_RDMA_CM_INVALID_RECFMT = 0x02,22 NVME_RDMA_CM_INVALID_QID = 0x03,23 NVME_RDMA_CM_INVALID_HSQSIZE = 0x04,24 NVME_RDMA_CM_INVALID_HRQSIZE = 0x05,25 NVME_RDMA_CM_NO_RSC = 0x06,26 NVME_RDMA_CM_INVALID_IRD = 0x07,27 NVME_RDMA_CM_INVALID_ORD = 0x08,28 NVME_RDMA_CM_INVALID_CNTLID = 0x09,29};30 31static inline const char *nvme_rdma_cm_msg(enum nvme_rdma_cm_status status)32{33 switch (status) {34 case NVME_RDMA_CM_INVALID_LEN:35 return "invalid length";36 case NVME_RDMA_CM_INVALID_RECFMT:37 return "invalid record format";38 case NVME_RDMA_CM_INVALID_QID:39 return "invalid queue ID";40 case NVME_RDMA_CM_INVALID_HSQSIZE:41 return "invalid host SQ size";42 case NVME_RDMA_CM_INVALID_HRQSIZE:43 return "invalid host RQ size";44 case NVME_RDMA_CM_NO_RSC:45 return "resource not found";46 case NVME_RDMA_CM_INVALID_IRD:47 return "invalid IRD";48 case NVME_RDMA_CM_INVALID_ORD:49 return "Invalid ORD";50 case NVME_RDMA_CM_INVALID_CNTLID:51 return "invalid controller ID";52 default:53 return "unrecognized reason";54 }55}56 57/**58 * struct nvme_rdma_cm_req - rdma connect request59 *60 * @recfmt: format of the RDMA Private Data61 * @qid: queue Identifier for the Admin or I/O Queue62 * @hrqsize: host receive queue size to be created63 * @hsqsize: host send queue size to be created64 */65struct nvme_rdma_cm_req {66 __le16 recfmt;67 __le16 qid;68 __le16 hrqsize;69 __le16 hsqsize;70 __le16 cntlid;71 u8 rsvd[22];72};73 74/**75 * struct nvme_rdma_cm_rep - rdma connect reply76 *77 * @recfmt: format of the RDMA Private Data78 * @crqsize: controller receive queue size79 */80struct nvme_rdma_cm_rep {81 __le16 recfmt;82 __le16 crqsize;83 u8 rsvd[28];84};85 86/**87 * struct nvme_rdma_cm_rej - rdma connect reject88 *89 * @recfmt: format of the RDMA Private Data90 * @sts: error status for the associated connect request91 */92struct nvme_rdma_cm_rej {93 __le16 recfmt;94 __le16 sts;95};96 97#endif /* _LINUX_NVME_RDMA_H */98