octeontx2-pf: Avoid adding dcbnl_ops for LBK and SDP vf

[ Upstream commit 184fb40f731bd3353b0887731f7caba66609e9cd ]

Priority flow control is not supported for LBK and SDP vf. This patch
adds support to not add dcbnl_ops for LBK and SDP vf.

Fixes: 8e67558177f8 ("octeontx2-pf: PFC config support with DCBx")
Signed-off-by: Suman Ghosh <sumang@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250519072658.2960851-1-sumang@marvell.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
index 63ddd262d1229b27c840bc79f411d643081dd100..1f53bd5e45604710b4430b7c8c1c72110c8cb2ab 100644 (file)
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
@@ -729,9 +729,12 @@ static int otx2vf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
        }
 
 #ifdef CONFIG_DCB
-       err = otx2_dcbnl_set_ops(netdev);
-       if (err)
-               goto err_free_zc_bmap;
+       /* Priority flow control is not supported for LBK and SDP vf(s) */
+       if (!(is_otx2_lbkvf(vf->pdev) || is_otx2_sdp_rep(vf->pdev))) {
+               err = otx2_dcbnl_set_ops(netdev);
+               if (err)
+                       goto err_free_zc_bmap;
+       }
 #endif
        otx2_qos_init(vf, qos_txqs);