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RDMA/cxgb4: Notify rdma stack for IB_EVENT_QP_LAST_WQE_REACHED event

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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 844bc12e6d ("IB/core:
add support for draining Shared receive queues")

Fixes: 844bc12e6d ("IB/core: add support for draining Shared receive queues")
Signed-off-by: Anumula Murali Mohan Reddy <anumula@chelsio.com>
Signed-off-by: Potnuri Bharat Teja <bharat@chelsio.com>
Link: https://patch.msgid.link/20250107095053.81007-1-anumula@chelsio.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Anumula Murali Mohan Reddy
2025-01-07 15:20:53 +05:30
committed by Leon Romanovsky
parent 9264cd6aa8
commit 42e6ddda4c
1 changed files with 8 additions and 0 deletions
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8
drivers/infiniband/hw/cxgb4/qp.c
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@@ -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);