Commit 42e6ddda authored by Anumula Murali Mohan Reddy's avatar Anumula Murali Mohan Reddy Committed by Leon Romanovsky
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RDMA/cxgb4: Notify rdma stack for IB_EVENT_QP_LAST_WQE_REACHED event 



This patch sends IB_EVENT_QP_LAST_WQE_REACHED event on a QP that is in
error state and associated with an SRQ. This behaviour is incorporated
in flush_qp() which is called when QP transitions to error state.
Supports SRQ drain functionality added by commit 844bc12e ("IB/core:
add support for draining Shared receive queues")

Fixes: 844bc12e ("IB/core: add support for draining Shared receive queues")
Signed-off-by: default avatarAnumula Murali Mohan Reddy <anumula@chelsio.com>
Signed-off-by: default avatarPotnuri Bharat Teja <bharat@chelsio.com>
Link: https://patch.msgid.link/20250107095053.81007-1-anumula@chelsio.com


Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
parent 9264cd6a

drivers/infiniband/hw/cxgb4/qp.c

+8 −0
Original line number Diff line number Diff line
@@ -1599,6 +1599,7 @@ static void __flush_qp(struct c4iw_qp *qhp, struct c4iw_cq *rchp, 
	int count;

	int rq_flushed = 0, sq_flushed;

	unsigned long flag;

	struct ib_event ev;



	pr_debug("qhp %p rchp %p schp %p\n", qhp, rchp, schp);
@@ -1607,6 +1608,13 @@ static void __flush_qp(struct c4iw_qp *qhp, struct c4iw_cq *rchp, 
	if (schp != rchp)

		spin_lock(&schp->lock);

	spin_lock(&qhp->lock);

	if (qhp->srq && qhp->attr.state == C4IW_QP_STATE_ERROR &&

	    qhp->ibqp.event_handler) {

		ev.device = qhp->ibqp.device;

		ev.element.qp = &qhp->ibqp;

		ev.event = IB_EVENT_QP_LAST_WQE_REACHED;

		qhp->ibqp.event_handler(&ev, qhp->ibqp.qp_context);

	}



	if (qhp->wq.flushed) {

		spin_unlock(&qhp->lock);