Commit 479c5801 authored by Hariprasad Kelam's avatar Hariprasad Kelam Committed by Paolo Abeni
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octeontx2-pf: QOS: Perform cache sync on send queue teardown 



QOS is designed to create a new send queue whenever  a class
is created, ensuring proper shaping and scheduling. However,
when multiple send queues are created and deleted in a loop,
SMMU errors are observed.

This patch addresses the issue by performing an data cache sync
during the teardown of QOS send queues.

Fixes: ab6dddd2 ("octeontx2-pf: qos send queues management")
Signed-off-by: default avatarHariprasad Kelam <hkelam@marvell.com>
Reviewed-by: default avatarSimon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250522094742.1498295-1-hkelam@marvell.com


Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
parent 84699264

drivers/net/ethernet/marvell/octeontx2/nic/qos_sq.c

+22 −0
Original line number Diff line number Diff line
@@ -256,6 +256,26 @@ int otx2_qos_enable_sq(struct otx2_nic *pfvf, int qidx) 
	return err;

}



static int otx2_qos_nix_npa_ndc_sync(struct otx2_nic *pfvf)

{

	struct ndc_sync_op *req;

	int rc;



	mutex_lock(&pfvf->mbox.lock);



	req = otx2_mbox_alloc_msg_ndc_sync_op(&pfvf->mbox);

	if (!req) {

		mutex_unlock(&pfvf->mbox.lock);

		return -ENOMEM;

	}



	req->nix_lf_tx_sync = true;

	req->npa_lf_sync = true;

	rc = otx2_sync_mbox_msg(&pfvf->mbox);

	mutex_unlock(&pfvf->mbox.lock);

	return rc;

}



void otx2_qos_disable_sq(struct otx2_nic *pfvf, int qidx)

{

	struct otx2_qset *qset = &pfvf->qset;
@@ -285,6 +305,8 @@ void otx2_qos_disable_sq(struct otx2_nic *pfvf, int qidx) 


	otx2_qos_sqb_flush(pfvf, sq_idx);

	otx2_smq_flush(pfvf, otx2_get_smq_idx(pfvf, sq_idx));

	/* NIX/NPA NDC sync */

	otx2_qos_nix_npa_ndc_sync(pfvf);

	otx2_cleanup_tx_cqes(pfvf, cq);



	mutex_lock(&pfvf->mbox.lock);