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octeontx2-pf: QOS: Perform cache sync on send queue teardown

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[ Upstream commit 479c58016099d19686e36f6c50f912360839a7fa ]

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: ab6dddd2a6 ("octeontx2-pf: qos send queues management")
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250522094742.1498295-1-hkelam@marvell.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Hariprasad Kelam
2025-05-22 15:17:41 +05:30
committed by Greg Kroah-Hartman
parent 66abe22017
commit 91bed4ccae
1 changed files with 22 additions and 0 deletions
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22
drivers/net/ethernet/marvell/octeontx2/nic/qos_sq.c
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@@ -256,6 +256,26 @@ out:
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);