From 01e7da6ba53ca4d6189a1eae45607c0331c871f2 Mon Sep 17 00:00:00 2001 From: Kumar Sanghvi Date: Thu, 13 Oct 2011 13:51:30 +0530 Subject: RDMA/cxgb4: Make sure flush CQ entries are collected on connection close At the time when a peer closes the connection, iw_cxgb4 will not send a cq event if ibqp.uobject exists. In that case, its possible for a user application to get blocked in ibv_get_cq_event(). To resolve this, call the cq's comp_handler to unblock any read from ibv_get_cq_event(). This will trigger userspace to poll the cq and collect flush status completions for any pending work requests. Signed-off-by: Kumar Sanghvi Acked-by: Steve Wise Signed-off-by: Roland Dreier --- drivers/infiniband/hw/cxgb4/qp.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers/infiniband/hw/cxgb4') diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c index a41578e48c7b..892fa7c6d310 100644 --- a/drivers/infiniband/hw/cxgb4/qp.c +++ b/drivers/infiniband/hw/cxgb4/qp.c @@ -966,8 +966,12 @@ static void flush_qp(struct c4iw_qp *qhp) if (qhp->ibqp.uobject) { t4_set_wq_in_error(&qhp->wq); t4_set_cq_in_error(&rchp->cq); - if (schp != rchp) + (*rchp->ibcq.comp_handler)(&rchp->ibcq, rchp->ibcq.cq_context); + if (schp != rchp) { t4_set_cq_in_error(&schp->cq); + (*schp->ibcq.comp_handler)(&schp->ibcq, + schp->ibcq.cq_context); + } return; } __flush_qp(qhp, rchp, schp); -- cgit v1.2.3-59-g8ed1b