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[infiniband] Call ib_open() only when opening the IPoIB net device

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Defer the call to ib_open() until we want to actually open the device,
rather than when the device is registered.
This commit is contained in:
Michael Brown
2009-01-02 21:04:31 +00:00
parent 8674bc05a0
commit 53a7dd26cd
5 changed files with 60 additions and 28 deletions
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43
src/net/infiniband.c
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@@ -391,6 +391,42 @@ void ib_complete_recv ( struct ib_device *ibdev, struct ib_queue_pair *qp,
qp->recv.fill--;
}
/**
* Open port
*
* @v ibdev Infiniband device
* @ret rc Return status code
*/
int ib_open ( struct ib_device *ibdev ) {
int rc;
/* Open device if this is the first requested opening */
if ( ibdev->open_count == 0 ) {
if ( ( rc = ibdev->op->open ( ibdev ) ) != 0 )
return rc;
}
/* Increment device open request counter */
ibdev->open_count++;
return 0;
}
/**
* Close port
*
* @v ibdev Infiniband device
*/
void ib_close ( struct ib_device *ibdev ) {
/* Decrement device open request counter */
ibdev->open_count--;
/* Close device if this was the last remaining requested opening */
if ( ibdev->open_count == 0 )
ibdev->op->close ( ibdev );
}
/**
* Attach to multicast group
*
@@ -530,10 +566,6 @@ int register_ibdev ( struct ib_device *ibdev ) {
ibdev_get ( ibdev );
list_add_tail ( &ibdev->list, &ib_devices );
/* Open link */
if ( ( rc = ib_open ( ibdev ) ) != 0 )
goto err_open;
/* Add IPoIB device */
if ( ( rc = ipoib_probe ( ibdev ) ) != 0 ) {
DBGC ( ibdev, "IBDEV %p could not add IPoIB device: %s\n",
@@ -546,8 +578,6 @@ int register_ibdev ( struct ib_device *ibdev ) {
return 0;
err_ipoib_probe:
ib_close ( ibdev );
err_open:
list_del ( &ibdev->list );
ibdev_put ( ibdev );
return rc;
@@ -562,7 +592,6 @@ void unregister_ibdev ( struct ib_device *ibdev ) {
/* Close device */
ipoib_remove ( ibdev );
ib_close ( ibdev );
/* Remove from device list */
list_del ( &ibdev->list );