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RDMA/rtrs: Define MIN_CHUNK_SIZE

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[ Upstream commit 3f3d0eabc1 ]

Define MIN_CHUNK_SIZE to replace the hard-coding number.
We need 4k for metadata, so MIN_CHUNK_SIZE should be at least 8k.

Link: https://lore.kernel.org/r/20210528113018.52290-7-jinpu.wang@ionos.com
Signed-off-by: Gioh Kim <gi-oh.kim@ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Gioh Kim 2021-05-28 13:30:04 +02:00 • committed by Greg Kroah-Hartman
commit 2b3dcfbece
2 changed files with 3 additions and 2 deletions
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1
drivers/infiniband/ulp/rtrs/rtrs-pri.h
View file

@ -56,6 +56,7 @@ enum {
* somewhere between 1 and 65536 and it depends on the system.
*/
MAX_SESS_QUEUE_DEPTH = 65536,
MIN_CHUNK_SIZE = 8192,
RTRS_HB_INTERVAL_MS = 5000,
RTRS_HB_MISSED_MAX = 5,

4
drivers/infiniband/ulp/rtrs/rtrs-srv.c
View file

@ -2193,9 +2193,9 @@ static int check_module_params(void)
sess_queue_depth, 1, MAX_SESS_QUEUE_DEPTH);
return -EINVAL;
}
if (max_chunk_size < 4096 || !is_power_of_2(max_chunk_size)) {
if (max_chunk_size < MIN_CHUNK_SIZE || !is_power_of_2(max_chunk_size)) {
pr_err("Invalid max_chunk_size value %d, has to be >= %d and should be power of two.\n",
max_chunk_size, 4096);
max_chunk_size, MIN_CHUNK_SIZE);
return -EINVAL;
}