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authorGuoqing Jiang <guoqing.jiang@linux.dev>2022-09-02 13:19:20 +0300
committerLeon Romanovsky <leon@kernel.org>2022-09-06 14:05:22 +0300
commit2aa9e4a2c3db065672fe530fb594a8e31f5672f6 (patch)
treed53dd66a44d11262b6d5fa85b52f5d10e9922753 /drivers/infiniband/ulp
parente58f889e293e6bd13ae2b48208a4d0d15592bf5a (diff)
downloadlinux-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')
-rw-r--r--drivers/infiniband/ulp/rtrs/rtrs-pri.h7
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