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| author | Guoqing Jiang <guoqing.jiang@linux.dev> | 2022-09-02 13:19:20 +0300 |
|---|---|---|
| committer | Leon Romanovsky <leon@kernel.org> | 2022-09-06 14:05:22 +0300 |
| commit | 2aa9e4a2c3db065672fe530fb594a8e31f5672f6 (patch) | |
| tree | d53dd66a44d11262b6d5fa85b52f5d10e9922753 /drivers/infiniband/ulp/rtrs/rtrs-pri.h | |
| parent | e58f889e293e6bd13ae2b48208a4d0d15592bf5a (diff) | |
| download | linux-2aa9e4a2c3db065672fe530fb594a8e31f5672f6.tar.xz | |
RDMA/rtrs: Update comments for MAX_SESS_QUEUE_DEPTH
The maximum queue_depth should be 65535 per check_module_params,
also update other relevant comments.
Signed-off-by: Guoqing Jiang <guoqing.jiang@linux.dev>
Link: https://lore.kernel.org/r/20220902101922.26273-2-guoqing.jiang@linux.dev
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Diffstat (limited to 'drivers/infiniband/ulp/rtrs/rtrs-pri.h')
| -rw-r--r-- | drivers/infiniband/ulp/rtrs/rtrs-pri.h | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/infiniband/ulp/rtrs/rtrs-pri.h b/drivers/infiniband/ulp/rtrs/rtrs-pri.h index ac0df734eba8..a2420eecaf5a 100644 --- a/drivers/infiniband/ulp/rtrs/rtrs-pri.h +++ b/drivers/infiniband/ulp/rtrs/rtrs-pri.h @@ -26,11 +26,10 @@ /* * Max IB immediate data size is 2^28 (MAX_IMM_PAYL_BITS) * and the minimum chunk size is 4096 (2^12). - * So the maximum sess_queue_depth is 65536 (2^16) in theory. - * But mempool_create, create_qp and ib_post_send fail with - * "cannot allocate memory" error if sess_queue_depth is too big. + * So the maximum sess_queue_depth is 65535 (2^16 - 1) in theory + * since queue_depth in rtrs_msg_conn_rsp is defined as le16. * Therefore the pratical max value of sess_queue_depth is - * somewhere between 1 and 65534 and it depends on the system. + * somewhere between 1 and 65535 and it depends on the system. */ #define MAX_SESS_QUEUE_DEPTH 65535 |