This patch implements handling dispatch of appropriate event to the IB stack
based on NETDEV events received.
v2: Removed cleanup of the resources during driver unload since we are calling
unregister_netdevice_notifier first in the exit.
Signed-off-by: Eddie Wai <eddie....@broadcom.com>
Signed-off-by: Devesh Sharma <devesh.sha...@broadcom.com>
Signed-off-by: Somnath Kotur <somnath.ko...@broadcom.com>
Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapa...@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xav...@broadcom.com>
---
drivers/infiniband/hw/bnxtre/bnxt_re_main.c | 64 +++++++++++++++++++++++++++++
1 file changed, 64 insertions(+)
diff --git a/drivers/infiniband/hw/bnxtre/bnxt_re_main.c
b/drivers/infiniband/hw/bnxtre/bnxt_re_main.c
index fd52e65..260dec1 100644
--- a/drivers/infiniband/hw/bnxtre/bnxt_re_main.c
+++ b/drivers/infiniband/hw/bnxtre/bnxt_re_main.c
@@ -720,6 +720,60 @@ static int bnxt_re_alloc_res(struct bnxt_re_dev *rdev)
return rc;
}
+static void bnxt_re_dispatch_event(struct ib_device *ibdev, struct ib_qp *qp,
+ u8 port_num, enum ib_event_type event)
+{
+ struct ib_event ib_event;
+
+ ib_event.device = ibdev;
+ if (qp)
+ ib_event.element.qp = qp;
+ else
+ ib_event.element.port_num = port_num;
+ ib_event.event = event;
+ ib_dispatch_event(&ib_event);
+}
+
+static bool bnxt_re_is_qp1_or_shadow_qp(struct bnxt_re_dev *rdev,
+ struct bnxt_re_qp *qp)
+{
+ return (qp->ib_qp.qp_type == IB_QPT_GSI) || (qp == rdev->qp1_sqp);
+}
+
+static void bnxt_re_dev_stop(struct bnxt_re_dev *rdev, bool qp_wait)
+{
+ int mask = IB_QP_STATE, qp_count, count = 1;
+ struct ib_qp_attr qp_attr;
+ struct bnxt_re_qp *qp;
+
+ qp_attr.qp_state = IB_QPS_ERR;
+ mutex_lock(&rdev->qp_lock);
+ list_for_each_entry(qp, &rdev->qp_list, list) {
+ /* Modify the state of all QPs except QP1/Shadow QP */
+ if (qp && !bnxt_re_is_qp1_or_shadow_qp(rdev, qp)) {
+ if (qp->qplib_qp.state !=
+ CMDQ_MODIFY_QP_NEW_STATE_RESET ||
+ qp->qplib_qp.state !=
+ CMDQ_MODIFY_QP_NEW_STATE_ERR) {
+ bnxt_re_dispatch_event(&rdev->ibdev, &qp->ib_qp,
+ 1, IB_EVENT_QP_FATAL);
+ bnxt_re_modify_qp(&qp->ib_qp, &qp_attr, mask,
+ NULL);
+ }
+ }
+ }
+
+ mutex_unlock(&rdev->qp_lock);
+ if (qp_wait) {
+ /* Give the application some time to clean up */
+ do {
+ qp_count = atomic_read(&rdev->qp_count);
+ msleep(100);
+ } while ((qp_count != atomic_read(&rdev->qp_count)) &&
+ count--);
+ }
+}
+
static void bnxt_re_ib_unreg(struct bnxt_re_dev *rdev, bool lock_wait)
{
int i, rc;
@@ -878,6 +932,8 @@ static int bnxt_re_ib_reg(struct bnxt_re_dev *rdev)
}
}
set_bit(BNXT_RE_FLAG_IBDEV_REGISTERED, &rdev->flags);
+ bnxt_re_dispatch_event(&rdev->ibdev, NULL, 1, IB_EVENT_PORT_ACTIVE);
+ bnxt_re_dispatch_event(&rdev->ibdev, NULL, 1, IB_EVENT_GID_CHANGE);
return 0;
free_sctx:
@@ -956,10 +1012,18 @@ static void bnxt_re_task(struct work_struct *work)
"Failed to register with IB: %#x", rc);
break;
case NETDEV_UP:
+ bnxt_re_dispatch_event(&rdev->ibdev, NULL, 1,
+ IB_EVENT_PORT_ACTIVE);
break;
case NETDEV_DOWN:
+ bnxt_re_dev_stop(rdev, false);
break;
case NETDEV_CHANGE:
+ if (!netif_carrier_ok(rdev->netdev))
+ bnxt_re_dev_stop(rdev, false);
+ else if (netif_carrier_ok(rdev->netdev))
+ bnxt_re_dispatch_event(&rdev->ibdev, NULL, 1,
+ IB_EVENT_PORT_ACTIVE);
break;
default:
break;
--
2.5.5
