^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0-or-later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * RDMA Network Block Driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2014 - 2018 ProfitBricks GmbH. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (c) 2018 - 2019 1&1 IONOS Cloud GmbH. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (c) 2019 - 2020 1&1 IONOS SE. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #ifndef RNBD_PROTO_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #define RNBD_PROTO_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/blkdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/limits.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/inet.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/in.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/in6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <rdma/ib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define RNBD_PROTO_VER_MAJOR 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define RNBD_PROTO_VER_MINOR 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) /* The default port number the RTRS server is listening on. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define RTRS_PORT 1234
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * enum rnbd_msg_types - RNBD message types
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * @RNBD_MSG_SESS_INFO: initial session info from client to server
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * @RNBD_MSG_SESS_INFO_RSP: initial session info from server to client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * @RNBD_MSG_OPEN: open (map) device request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * @RNBD_MSG_OPEN_RSP: response to an @RNBD_MSG_OPEN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * @RNBD_MSG_IO: block IO request operation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * @RNBD_MSG_CLOSE: close (unmap) device request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) enum rnbd_msg_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) RNBD_MSG_SESS_INFO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) RNBD_MSG_SESS_INFO_RSP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) RNBD_MSG_OPEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) RNBD_MSG_OPEN_RSP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) RNBD_MSG_IO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) RNBD_MSG_CLOSE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * struct rnbd_msg_hdr - header of RNBD messages
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * @type: Message type, valid values see: enum rnbd_msg_types
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) struct rnbd_msg_hdr {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) __le16 type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) __le16 __padding;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * We allow to map RO many times and RW only once. We allow to map yet another
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * time RW, if MIGRATION is provided (second RW export can be required for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * example for VM migration)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) enum rnbd_access_mode {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) RNBD_ACCESS_RO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) RNBD_ACCESS_RW,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) RNBD_ACCESS_MIGRATION,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * struct rnbd_msg_sess_info - initial session info from client to server
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) * @hdr: message header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) * @ver: RNBD protocol version
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) struct rnbd_msg_sess_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) struct rnbd_msg_hdr hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) u8 ver;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) u8 reserved[31];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) * struct rnbd_msg_sess_info_rsp - initial session info from server to client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) * @hdr: message header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * @ver: RNBD protocol version
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) struct rnbd_msg_sess_info_rsp {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) struct rnbd_msg_hdr hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) u8 ver;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) u8 reserved[31];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * struct rnbd_msg_open - request to open a remote device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * @hdr: message header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * @access_mode: the mode to open remote device, valid values see:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * enum rnbd_access_mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) * @device_name: device path on remote side
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) struct rnbd_msg_open {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) struct rnbd_msg_hdr hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) u8 access_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) u8 resv1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) s8 dev_name[NAME_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) u8 reserved[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * struct rnbd_msg_close - request to close a remote device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * @hdr: message header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * @device_id: device_id on server side to identify the device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) struct rnbd_msg_close {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) struct rnbd_msg_hdr hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) __le32 device_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) * struct rnbd_msg_open_rsp - response message to RNBD_MSG_OPEN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) * @hdr: message header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * @device_id: device_id on server side to identify the device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) * @nsectors: number of sectors in the usual 512b unit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * @max_hw_sectors: max hardware sectors in the usual 512b unit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) * @max_write_same_sectors: max sectors for WRITE SAME in the 512b unit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) * @max_discard_sectors: max. sectors that can be discarded at once in 512b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) * unit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) * @discard_granularity: size of the internal discard allocation unit in bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) * @discard_alignment: offset from internal allocation assignment in bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * @physical_block_size: physical block size device supports in bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) * @logical_block_size: logical block size device supports in bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) * @max_segments: max segments hardware support in one transfer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) * @secure_discard: supports secure discard
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * @rotation: is a rotational disc?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) struct rnbd_msg_open_rsp {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) struct rnbd_msg_hdr hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) __le32 device_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) __le64 nsectors;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) __le32 max_hw_sectors;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) __le32 max_write_same_sectors;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) __le32 max_discard_sectors;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) __le32 discard_granularity;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) __le32 discard_alignment;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) __le16 physical_block_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) __le16 logical_block_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) __le16 max_segments;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) __le16 secure_discard;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) u8 rotational;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) u8 reserved[11];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) * struct rnbd_msg_io - message for I/O read/write
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) * @hdr: message header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) * @device_id: device_id on server side to find the right device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * @sector: bi_sector attribute from struct bio
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * @rw: valid values are defined in enum rnbd_io_flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * @bi_size: number of bytes for I/O read/write
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) * @prio: priority
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) struct rnbd_msg_io {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) struct rnbd_msg_hdr hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) __le32 device_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) __le64 sector;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) __le32 rw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) __le32 bi_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) __le16 prio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) #define RNBD_OP_BITS 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) #define RNBD_OP_MASK ((1 << RNBD_OP_BITS) - 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) * enum rnbd_io_flags - RNBD request types from rq_flag_bits
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) * @RNBD_OP_READ: read sectors from the device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) * @RNBD_OP_WRITE: write sectors to the device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * @RNBD_OP_FLUSH: flush the volatile write cache
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) * @RNBD_OP_DISCARD: discard sectors
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * @RNBD_OP_SECURE_ERASE: securely erase sectors
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) * @RNBD_OP_WRITE_SAME: write the same sectors many times
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) * @RNBD_F_SYNC: request is sync (sync write or read)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * @RNBD_F_FUA: forced unit access
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) enum rnbd_io_flags {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) /* Operations */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) RNBD_OP_READ = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) RNBD_OP_WRITE = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) RNBD_OP_FLUSH = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) RNBD_OP_DISCARD = 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) RNBD_OP_SECURE_ERASE = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) RNBD_OP_WRITE_SAME = 5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) RNBD_OP_LAST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) /* Flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) RNBD_F_SYNC = 1<<(RNBD_OP_BITS + 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) RNBD_F_FUA = 1<<(RNBD_OP_BITS + 1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) RNBD_F_ALL = (RNBD_F_SYNC | RNBD_F_FUA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) static inline u32 rnbd_op(u32 flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) return flags & RNBD_OP_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) static inline u32 rnbd_flags(u32 flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) return flags & ~RNBD_OP_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) static inline bool rnbd_flags_supported(u32 flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) u32 op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) op = rnbd_op(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) flags = rnbd_flags(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) if (op >= RNBD_OP_LAST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) if (flags & ~RNBD_F_ALL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) static inline u32 rnbd_to_bio_flags(u32 rnbd_opf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) u32 bio_opf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) switch (rnbd_op(rnbd_opf)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) case RNBD_OP_READ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) bio_opf = REQ_OP_READ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) case RNBD_OP_WRITE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) bio_opf = REQ_OP_WRITE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) case RNBD_OP_FLUSH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) bio_opf = REQ_OP_FLUSH | REQ_PREFLUSH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) case RNBD_OP_DISCARD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) bio_opf = REQ_OP_DISCARD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) case RNBD_OP_SECURE_ERASE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) bio_opf = REQ_OP_SECURE_ERASE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) case RNBD_OP_WRITE_SAME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) bio_opf = REQ_OP_WRITE_SAME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) WARN(1, "Unknown RNBD type: %d (flags %d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) rnbd_op(rnbd_opf), rnbd_opf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) bio_opf = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) if (rnbd_opf & RNBD_F_SYNC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) bio_opf |= REQ_SYNC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) if (rnbd_opf & RNBD_F_FUA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) bio_opf |= REQ_FUA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) return bio_opf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) static inline u32 rq_to_rnbd_flags(struct request *rq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) u32 rnbd_opf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) switch (req_op(rq)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) case REQ_OP_READ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) rnbd_opf = RNBD_OP_READ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) case REQ_OP_WRITE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) rnbd_opf = RNBD_OP_WRITE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) case REQ_OP_DISCARD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) rnbd_opf = RNBD_OP_DISCARD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) case REQ_OP_SECURE_ERASE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) rnbd_opf = RNBD_OP_SECURE_ERASE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) case REQ_OP_WRITE_SAME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) rnbd_opf = RNBD_OP_WRITE_SAME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) case REQ_OP_FLUSH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) rnbd_opf = RNBD_OP_FLUSH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) WARN(1, "Unknown request type %d (flags %llu)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) req_op(rq), (unsigned long long)rq->cmd_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) rnbd_opf = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) if (op_is_sync(rq->cmd_flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) rnbd_opf |= RNBD_F_SYNC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) if (op_is_flush(rq->cmd_flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) rnbd_opf |= RNBD_F_FUA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) return rnbd_opf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) const char *rnbd_access_mode_str(enum rnbd_access_mode mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) #endif /* RNBD_PROTO_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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