From mboxrd@z Thu Jan 1 00:00:00 1970 From: Selvin Xavier Subject: [PATCH V2 17/22] bnxt_re: Handling dispatching of events to IB stack Date: Thu, 8 Dec 2016 22:48:11 -0800 Message-ID: <1481266096-23331-18-git-send-email-selvin.xavier@broadcom.com> References: <1481266096-23331-1-git-send-email-selvin.xavier@broadcom.com> Cc: netdev@vger.kernel.org, Selvin Xavier , Eddie Wai , Devesh Sharma , Somnath Kotur , Sriharsha Basavapatna To: dledford@redhat.com, linux-rdma@vger.kernel.org Return-path: Received: from lpdvsmtp01.broadcom.com ([192.19.211.62]:45706 "EHLO relay.smtp.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932209AbcLIGsh (ORCPT ); Fri, 9 Dec 2016 01:48:37 -0500 In-Reply-To: <1481266096-23331-1-git-send-email-selvin.xavier@broadcom.com> Sender: netdev-owner@vger.kernel.org List-ID: 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 Signed-off-by: Devesh Sharma Signed-off-by: Somnath Kotur Signed-off-by: Sriharsha Basavapatna Signed-off-by: Selvin Xavier --- 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