834e3c5a0e
SPDK can submit more commands to remote NVMf target than allowed by negotiated queue size. SPDK submits up to SQSIZE commands, but only SQSIZE-1 are allowed. Here is a relevant quote from NVMe over Fabrics rev.1.1a ch.2.4.1 “Submission Queue Flow Control Negotiation”: If SQ flow control is disabled, then the host should limit the number of outstanding commands for a queue pair to be less than the size of the Submission Queue. If the controller detects that the number of outstanding commands for a queue pair is greater than or equal to the size of the Submission Queue, then the controller shall: a) stop processing commands and set the Controller Fatal Status (CSTS.CFS) bit to ‘1’ (refer to section 10.5 in the NVMe Base specification); and b) terminate the NVMe Transport connection and end the association between the host and the controller. Signed-off-by: Evgeniy Kochetov <evgeniik@nvidia.com> Change-Id: Ifbcf5d51911fc4ddcea1f7cde3135571648606f3 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11413 Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com> Community-CI: Mellanox Build Bot Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com> Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com> |
||
|---|---|---|
| .. | ||
| linux | ||
| spdk | ||
| spdk_internal | ||
| Makefile | ||