[PATCH V5 for-next 17/21] RDMA/bnxt_re: Handling dispatching of events to IB stack
flat view
STALE3529d
From: Selvin Xavier <selvin.xavier@broadcom.com>
Date: 2017-02-10 11:23:04
Also in:
linux-rdma
Subsystem:
broadcom netxtreme-e roce driver, infiniband subsystem, the rest · Maintainers:
Selvin Xavier, Kalesh AP, Jason Gunthorpe, Leon Romanovsky, Linus Torvalds
This patch implements events dispatching 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.
v3: Fixes cocci warnings and some sparse warnings
v5: Removes qp_wait parameter from bnxt_re_dev_stop() as it was never used
Signed-off-by: Eddie Wai <redacted>
Signed-off-by: Devesh Sharma <redacted>
Signed-off-by: Somnath Kotur <redacted>
Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
---
drivers/infiniband/hw/bnxt_re/main.c | 59 ++++++++++++++++++++++++++++++++++++
1 file changed, 59 insertions(+)
diff --git a/drivers/infiniband/hw/bnxt_re/main.c b/drivers/infiniband/hw/bnxt_re/main.c
index 95dbbbe..c84691a 100644
--- a/drivers/infiniband/hw/bnxt_re/main.c
+++ b/drivers/infiniband/hw/bnxt_re/main.c@@ -712,6 +712,51 @@ 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) +{ + int mask = IB_QP_STATE; + 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 (!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); +} + static void bnxt_re_ib_unreg(struct bnxt_re_dev *rdev, bool lock_wait) { int i, rc;
@@ -871,6 +916,9 @@ 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: bnxt_re_net_stats_ctx_free(rdev, rdev->qplib_ctx.stats.fw_id, true);
@@ -950,8 +998,19 @@ 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); + break; case NETDEV_CHANGE: + if (!netif_carrier_ok(rdev->netdev)) + bnxt_re_dev_stop(rdev); + 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