This is a note to let you know that I've just added the patch titled
RDMA/cxgb4: Notify rdma stack for IB_EVENT_QP_LAST_WQE_REACHED event
to the 6.13-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
rdma-cxgb4-notify-rdma-stack-for-ib_event_qp_last_wq.patch
and it can be found in the queue-6.13 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit b08c99fcce4fb49ad07da706bb90cdc7dcf7ba4d
Author: Anumula Murali Mohan Reddy <anumula@xxxxxxxxxxx>
Date: Tue Jan 7 15:20:53 2025 +0530
RDMA/cxgb4: Notify rdma stack for IB_EVENT_QP_LAST_WQE_REACHED event
[ Upstream commit 42e6ddda4c17fa0d5120e3723d522649f8fc62fa ]
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 844bc12e6da3 ("IB/core:
add support for draining Shared receive queues")
Fixes: 844bc12e6da3 ("IB/core: add support for draining Shared receive queues")
Signed-off-by: Anumula Murali Mohan Reddy <anumula@xxxxxxxxxxx>
Signed-off-by: Potnuri Bharat Teja <bharat@xxxxxxxxxxx>
Link: https://patch.msgid.link/20250107095053.81007-1-anumula@xxxxxxxxxxx
Signed-off-by: Leon Romanovsky <leon@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c
index 7b5c4522b426a..955f061a55e9a 100644
--- a/drivers/infiniband/hw/cxgb4/qp.c
+++ b/drivers/infiniband/hw/cxgb4/qp.c
@@ -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);
