[Intel-wired-lan] [PATCH iwl-next v2 2/4] ice: Support FCS/CRC strip disable for VF

[Ahmed Zaki]

From: Haiyue Wang <haiyue.wang at intel.com>

To support CRC strip enable/disable functionality, VF needs the explicit
request VIRTCHNL_VF_OFFLOAD_CRC offload. Then according to crc_disable
flag of Rx queue configuration information to set up the queue context.

Signed-off-by: Haiyue Wang <haiyue.wang at intel.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg at intel.com>
Signed-off-by: Ahmed Zaki <ahmed.zaki at intel.com>
---
 drivers/net/ethernet/intel/ice/ice_virtchnl.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl.c b/drivers/net/ethernet/intel/ice/ice_virtchnl.c
index b03426ac932b..c0c3e524c523 100644
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl.c
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl.c
@@ -486,6 +486,9 @@ static int ice_vc_get_vf_res_msg(struct ice_vf *vf, u8 *msg)
 	if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_REQ_QUEUES)
 		vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_REQ_QUEUES;
 
+	if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_CRC)
+		vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_CRC;
+
 	if (vf->driver_caps & VIRTCHNL_VF_CAP_ADV_LINK_SPEED)
 		vfres->vf_cap_flags |= VIRTCHNL_VF_CAP_ADV_LINK_SPEED;
 
@@ -1666,6 +1669,18 @@ static int ice_vc_cfg_qs_msg(struct ice_vf *vf, u8 *msg)
 			vsi->rx_rings[i]->dma = qpi->rxq.dma_ring_addr;
 			vsi->rx_rings[i]->count = qpi->rxq.ring_len;
 
+			if (qpi->rxq.crc_disable &&
+			    !(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_CRC)) {
+				goto error_param;
+			}
+
+			if (qpi->rxq.crc_disable)
+				vsi->rx_rings[q_idx]->flags |=
+					ICE_RX_FLAGS_CRC_STRIP_DIS;
+			else
+				vsi->rx_rings[q_idx]->flags &=
+					~ICE_RX_FLAGS_CRC_STRIP_DIS;
+
 			if (qpi->rxq.databuffer_size != 0 &&
 			    (qpi->rxq.databuffer_size > ((16 * 1024) - 128) ||
 			     qpi->rxq.databuffer_size < 1024))
-- 
2.34.1