From bdf20e72548cdcca1c16f29ad30c5725fa1d8d11 Mon Sep 17 00:00:00 2001 From: Sagi Grimberg Date: Tue, 2 Dec 2014 16:57:43 +0200 Subject: [PATCH] iser-target: Remove an atomic operation from the IO path In order to know that we consumed all the connection completions we maintain atomic post_send_buf_count for each IO post send. But we can know that if we post a "beacon" (zero length RECV work request) after we move the QP into error state and the target does not serve any new IO. When we consume it, we know we finished all the connection completion and we can go ahead and destroy stuff. In error completion handler we now just need to check for ISERT_BEACON_WRID to arrive and then wait for session commands to cleanup and complete conn_wait_comp_err. We reserve another CQ and QP entries to fit the zero length post recv. Signed-off-by: Sagi Grimberg Signed-off-by: Nicholas Bellinger --- Reading git-format-patch failed