Request logout to the initiator asynchronously when exiting the
running connection from the target.
Based on this patch, the next patch will make flushing PDUs possible
only when the connection is RUNNING (or INVALID) and remove the
tight loop in iscsi_conn_flush_pdus().
Set timeout of logout request as 30 seconds. 30 seconds is as same as
NOP timeout and will be reasonable for now.
Add and use logout_request_timer to check the timeout.
When the connection gets internal a logout request, move the connection
to EXITING state if the connection is in INVALID state, request logout
to initiator and start 30 seconds timer if the connection is in RUNNING
state and logout is not requested yet, or do nothing otherwise.
Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Change-Id: I43192be9fd7112ad444152c0dd88f99a14aa8d30
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/470705
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
fe5611b79b