1 /* 2 * Copyright (c) 2015 Mellanox Technologies. All rights reserved. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms and conditions of the GNU General Public License, 6 * version 2, as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 11 * more details. 12 */ 13 14 #ifndef _LINUX_NVME_RDMA_H 15 #define _LINUX_NVME_RDMA_H 16 17 enum nvme_rdma_cm_fmt { 18 NVME_RDMA_CM_FMT_1_0 = 0x0, 19 }; 20 21 enum nvme_rdma_cm_status { 22 NVME_RDMA_CM_INVALID_LEN = 0x01, 23 NVME_RDMA_CM_INVALID_RECFMT = 0x02, 24 NVME_RDMA_CM_INVALID_QID = 0x03, 25 NVME_RDMA_CM_INVALID_HSQSIZE = 0x04, 26 NVME_RDMA_CM_INVALID_HRQSIZE = 0x05, 27 NVME_RDMA_CM_NO_RSC = 0x06, 28 NVME_RDMA_CM_INVALID_IRD = 0x07, 29 NVME_RDMA_CM_INVALID_ORD = 0x08, 30 }; 31 32 /** 33 * struct nvme_rdma_cm_req - rdma connect request 34 * 35 * @recfmt: format of the RDMA Private Data 36 * @qid: queue Identifier for the Admin or I/O Queue 37 * @hrqsize: host receive queue size to be created 38 * @hsqsize: host send queue size to be created 39 */ 40 struct nvme_rdma_cm_req { 41 __le16 recfmt; 42 __le16 qid; 43 __le16 hrqsize; 44 __le16 hsqsize; 45 u8 rsvd[24]; 46 }; 47 48 /** 49 * struct nvme_rdma_cm_rep - rdma connect reply 50 * 51 * @recfmt: format of the RDMA Private Data 52 * @crqsize: controller receive queue size 53 */ 54 struct nvme_rdma_cm_rep { 55 __le16 recfmt; 56 __le16 crqsize; 57 u8 rsvd[28]; 58 }; 59 60 /** 61 * struct nvme_rdma_cm_rej - rdma connect reject 62 * 63 * @recfmt: format of the RDMA Private Data 64 * @fsts: error status for the associated connect request 65 */ 66 struct nvme_rdma_cm_rej { 67 __le16 recfmt; 68 __le16 sts; 69 }; 70 71 #endif /* _LINUX_NVME_RDMA_H */ 72