svn commit: r325637 - head/sys/ofed/drivers/infiniband/ulp/ipoib

[Hans Petter Selasky]

Author: hselasky
Date: Fri Nov 10 08:58:42 2017
New Revision: 325637
URL: https://svnweb.freebsd.org/changeset/base/325637

Log:
  Mark ipoib device as initialized on device open.
  
  Set the IPOIB_FLAG_INITIALIZED on dev_open and clear it on dev_stop to
  avoid a race between ipoib load and the underlying device driver.
  
  The device module must dispatch the IB_EVENT_PORT_ACTIVE event before ipoib
  module is loaded. Otherwise, the flush will fail since no one set the
  IPOIB_FLAG_INITIALIZED.
  
  Submitted by:	Slava Shwartsman <slavash at mellanox.com>
  Sponsored by:	Mellanox Technologies
  MFC after:	1 week

Modified:
  head/sys/ofed/drivers/infiniband/ulp/ipoib/ipoib_ib.c

Modified: head/sys/ofed/drivers/infiniband/ulp/ipoib/ipoib_ib.c
==============================================================================
--- head/sys/ofed/drivers/infiniband/ulp/ipoib/ipoib_ib.c	Fri Nov 10 08:42:37 2017	(r325636)
+++ head/sys/ofed/drivers/infiniband/ulp/ipoib/ipoib_ib.c	Fri Nov 10 08:58:42 2017	(r325637)
@@ -638,6 +638,8 @@ int ipoib_ib_dev_open(struct ipoib_dev_priv *priv)
 	clear_bit(IPOIB_STOP_REAPER, &priv->flags);
 	queue_delayed_work(ipoib_workqueue, &priv->ah_reap_task, HZ);
 
+	set_bit(IPOIB_FLAG_INITIALIZED, &priv->flags);
+
 	return 0;
 }
 
@@ -744,6 +746,8 @@ int ipoib_ib_dev_stop(struct ipoib_dev_priv *priv, int
 	unsigned long begin;
 	struct ipoib_tx_buf *tx_req;
 	int i;
+
+	clear_bit(IPOIB_FLAG_INITIALIZED, &priv->flags);
 
 	ipoib_cm_dev_stop(priv);