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example: Add forward ops to volume

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Signed-off-by: Robert Baldyga <robert.baldyga@huawei.com>
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@huawei.com>
This commit is contained in:
Robert Baldyga 2023-09-03 19:47:05 +02:00 committed by Michal Mielewczyk
parent c9cd217a08
commit e667c10b4a
1 changed files with 39 additions and 0 deletions
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39
example/simple/src/volume.c
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@ -1,5 +1,6 @@
/*
* Copyright(c) 2019-2022 Intel Corporation
* Copyright(c) 2024 Huawei Technologies
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -87,6 +88,41 @@ static void volume_submit_discard(struct ocf_io *io)
io->end(io, 0);
}
void volume_forward_io(ocf_volume_t volume, ocf_forward_token_t token,
int dir, uint64_t addr, uint64_t bytes, uint64_t offset)
{
struct ocf_io *io = ocf_forward_get_io(token);
struct myvolume *myvolume = ocf_volume_get_priv(volume);
struct volume_data *data = ocf_io_get_data(io);
if (dir == OCF_WRITE) {
memcpy(myvolume->mem + addr,
data->ptr + offset, bytes);
} else {
memcpy(data->ptr + offset,
myvolume->mem + addr, bytes);
}
printf("VOL FWD: (name: %s), IO: (dir: %s, addr: %ld, bytes: %ld)\n",
myvolume->name, dir == OCF_READ ? "read" : "write",
addr, bytes);
ocf_forward_end(token, 0);
}
void volume_forward_flush(ocf_volume_t volume, ocf_forward_token_t token)
{
ocf_forward_end(token, 0);
}
void volume_forward_discard(ocf_volume_t volume, ocf_forward_token_t token,
uint64_t addr, uint64_t bytes)
{
ocf_forward_end(token, 0);
}
/*
* Let's set maximum io size to 128 KiB.
*/
@ -145,6 +181,9 @@ const struct ocf_volume_properties volume_properties = {
.submit_io = volume_submit_io,
.submit_flush = volume_submit_flush,
.submit_discard = volume_submit_discard,
.forward_io = volume_forward_io,
.forward_flush = volume_forward_flush,
.forward_discard = volume_forward_discard,
.get_max_io_size = volume_get_max_io_size,
.get_length = volume_get_length,
},