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[infiniband] Add the concept of an Infiniband upper-layer driver

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Replace the explicit calls from the Infiniband core to the IPoIB layer
with the general concept of an Infiniband upper-layer driver
(analogous to a PCI driver) which can create arbitrary devices on top
of Infiniband devices.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2010-09-04 23:35:09 +01:00
parent ca4df90a63
commit 35b19d8848
4 changed files with 170 additions and 81 deletions
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84
src/drivers/net/ipoib.c
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@@ -597,6 +597,42 @@ static void ipoib_leave_broadcast_group ( struct ipoib_device *ipoib ) {
}
}
/**
* Handle link status change
*
* @v ibdev Infiniband device
*/
static void ipoib_link_state_changed ( struct ib_device *ibdev ) {
struct net_device *netdev = ib_get_ownerdata ( ibdev );
struct ipoib_device *ipoib = netdev->priv;
struct ipoib_mac *mac = ( ( struct ipoib_mac * ) netdev->ll_addr );
int rc;
/* Leave existing broadcast group */
ipoib_leave_broadcast_group ( ipoib );
/* Update MAC address based on potentially-new GID prefix */
memcpy ( &mac->gid.u.half[0], &ibdev->gid.u.half[0],
sizeof ( mac->gid.u.half[0] ) );
/* Update broadcast GID based on potentially-new partition key */
ipoib->broadcast.gid.u.words[2] =
htons ( ibdev->pkey | IB_PKEY_FULL );
/* Set net device link state to reflect Infiniband link state */
rc = ib_link_rc ( ibdev );
netdev_link_err ( netdev, ( rc ? rc : -EINPROGRESS_JOINING ) );
/* Join new broadcast group */
if ( ib_is_open ( ibdev ) && ib_link_ok ( ibdev ) &&
( ( rc = ipoib_join_broadcast_group ( ipoib ) ) != 0 ) ) {
DBGC ( ipoib, "IPoIB %p could not rejoin broadcast group: "
"%s\n", ipoib, strerror ( rc ) );
netdev_link_err ( netdev, rc );
return;
}
}
/**
* Open IPoIB network device
*
@@ -690,49 +726,13 @@ static struct net_device_operations ipoib_operations = {
.irq = ipoib_irq,
};
/**
* Handle link status change
*
* @v ibdev Infiniband device
*/
void ipoib_link_state_changed ( struct ib_device *ibdev ) {
struct net_device *netdev = ib_get_ownerdata ( ibdev );
struct ipoib_device *ipoib = netdev->priv;
struct ipoib_mac *mac = ( ( struct ipoib_mac * ) netdev->ll_addr );
int rc;
/* Leave existing broadcast group */
ipoib_leave_broadcast_group ( ipoib );
/* Update MAC address based on potentially-new GID prefix */
memcpy ( &mac->gid.u.half[0], &ibdev->gid.u.half[0],
sizeof ( mac->gid.u.half[0] ) );
/* Update broadcast GID based on potentially-new partition key */
ipoib->broadcast.gid.u.words[2] =
htons ( ibdev->pkey | IB_PKEY_FULL );
/* Set net device link state to reflect Infiniband link state */
rc = ib_link_rc ( ibdev );
netdev_link_err ( netdev, ( rc ? rc : -EINPROGRESS_JOINING ) );
/* Join new broadcast group */
if ( ib_link_ok ( ibdev ) &&
( ( rc = ipoib_join_broadcast_group ( ipoib ) ) != 0 ) ) {
DBGC ( ipoib, "IPoIB %p could not rejoin broadcast group: "
"%s\n", ipoib, strerror ( rc ) );
netdev_link_err ( netdev, rc );
return;
}
}
/**
* Probe IPoIB device
*
* @v ibdev Infiniband device
* @ret rc Return status code
*/
int ipoib_probe ( struct ib_device *ibdev ) {
static int ipoib_probe ( struct ib_device *ibdev ) {
struct net_device *netdev;
struct ipoib_device *ipoib;
int rc;
@@ -775,10 +775,18 @@ int ipoib_probe ( struct ib_device *ibdev ) {
*
* @v ibdev Infiniband device
*/
void ipoib_remove ( struct ib_device *ibdev ) {
static void ipoib_remove ( struct ib_device *ibdev ) {
struct net_device *netdev = ib_get_ownerdata ( ibdev );
unregister_netdev ( netdev );
netdev_nullify ( netdev );
netdev_put ( netdev );
}
/** IPoIB driver */
struct ib_driver ipoib_driver __ib_driver = {
.name = "IPoIB",
.probe = ipoib_probe,
.notify = ipoib_link_state_changed,
.remove = ipoib_remove,
};