| Sagi Grimberg | 931a6de | 2016-07-06 21:55:50 +0900 | [diff] [blame] | 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 | |
| Max Gurtovoy | 3ee80c3 | 2017-02-20 13:44:28 +0200 | [diff] [blame] | 32 | static inline const char *nvme_rdma_cm_msg(enum nvme_rdma_cm_status status) |
| 33 | { |
| 34 | switch (status) { |
| 35 | case NVME_RDMA_CM_INVALID_LEN: |
| 36 | return "invalid length"; |
| 37 | case NVME_RDMA_CM_INVALID_RECFMT: |
| 38 | return "invalid record format"; |
| 39 | case NVME_RDMA_CM_INVALID_QID: |
| 40 | return "invalid queue ID"; |
| 41 | case NVME_RDMA_CM_INVALID_HSQSIZE: |
| 42 | return "invalid host SQ size"; |
| 43 | case NVME_RDMA_CM_INVALID_HRQSIZE: |
| 44 | return "invalid host RQ size"; |
| 45 | case NVME_RDMA_CM_NO_RSC: |
| 46 | return "resource not found"; |
| 47 | case NVME_RDMA_CM_INVALID_IRD: |
| 48 | return "invalid IRD"; |
| 49 | case NVME_RDMA_CM_INVALID_ORD: |
| 50 | return "Invalid ORD"; |
| 51 | default: |
| 52 | return "unrecognized reason"; |
| 53 | } |
| 54 | } |
| 55 | |
| Sagi Grimberg | 931a6de | 2016-07-06 21:55:50 +0900 | [diff] [blame] | 56 | /** |
| 57 | * struct nvme_rdma_cm_req - rdma connect request |
| 58 | * |
| 59 | * @recfmt: format of the RDMA Private Data |
| 60 | * @qid: queue Identifier for the Admin or I/O Queue |
| 61 | * @hrqsize: host receive queue size to be created |
| 62 | * @hsqsize: host send queue size to be created |
| 63 | */ |
| 64 | struct nvme_rdma_cm_req { |
| 65 | __le16 recfmt; |
| 66 | __le16 qid; |
| 67 | __le16 hrqsize; |
| 68 | __le16 hsqsize; |
| 69 | u8 rsvd[24]; |
| 70 | }; |
| 71 | |
| 72 | /** |
| 73 | * struct nvme_rdma_cm_rep - rdma connect reply |
| 74 | * |
| 75 | * @recfmt: format of the RDMA Private Data |
| 76 | * @crqsize: controller receive queue size |
| 77 | */ |
| 78 | struct nvme_rdma_cm_rep { |
| 79 | __le16 recfmt; |
| 80 | __le16 crqsize; |
| 81 | u8 rsvd[28]; |
| 82 | }; |
| 83 | |
| 84 | /** |
| 85 | * struct nvme_rdma_cm_rej - rdma connect reject |
| 86 | * |
| 87 | * @recfmt: format of the RDMA Private Data |
| 88 | * @fsts: error status for the associated connect request |
| 89 | */ |
| 90 | struct nvme_rdma_cm_rej { |
| 91 | __le16 recfmt; |
| 92 | __le16 sts; |
| 93 | }; |
| 94 | |
| 95 | #endif /* _LINUX_NVME_RDMA_H */ |