diff mbox series

[iwl-next,v2,3/4] ice: Fix VLAN and CRC strip co-existence

Message ID 20230830214821.3439959-4-ahmed.zaki@intel.com
State Changes Requested
Headers show
Series Support rx-fcs on/off for VFs | expand

Commit Message

Ahmed Zaki Aug. 30, 2023, 9:48 p.m. UTC 
From: Haiyue Wang <haiyue.wang@intel.com>

When VLAN strip is enabled, the CRC strip should not be allowed to be
disabled. And when CRC strip is disabled, the VLAN strip should not be
allowed to be enabled.

It needs to check CRC strip disable setting parameter firstly before
configuring the Rx/Tx queues, otherwise, in current error handling,
the already set Tx queue context doesn't rollback correctly, it will
cause the Tx queue setup failure next time:
"Failed to set LAN Tx queue context"

Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Ahmed Zaki <ahmed.zaki@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_vf_lib.h   |  3 +
 drivers/net/ethernet/intel/ice/ice_virtchnl.c | 61 ++++++++++++++++---
 2 files changed, 55 insertions(+), 9 deletions(-)

Comments

Tony Nguyen Aug. 31, 2023, 8:33 p.m. UTC | #1 
On 8/30/2023 2:48 PM, Ahmed Zaki wrote:
> From: Haiyue Wang <haiyue.wang@intel.com>

...

> @@ -2673,10 +2696,15 @@ static int ice_vf_init_vlan_stripping(struct ice_vf *vf)
>   	if (ice_vf_is_port_vlan_ena(vf) && !ice_is_dvm_ena(&vsi->back->hw))
>   		return 0;
>   
> -	if (ice_vf_vlan_offload_ena(vf->driver_caps))
> -		return vsi->inner_vlan_ops.ena_stripping(vsi, ETH_P_8021Q);
> -	else
> -		return vsi->inner_vlan_ops.dis_stripping(vsi);
> +	if (ice_vf_vlan_offload_ena(vf->driver_caps)) {
> +		int err = vsi->inner_vlan_ops.ena_stripping(vsi,
> +							    ETH_P_8021Q);
> +		if (!err)
> +			vf->vlan_strip_ena |= ICE_INNER_VLAN_STRIP_ENA;

Need a newline separator for declarations. This supersedes the no 
newline between function call and error check. However, since your 
declaration line wraps, it would be preferred to do this:

		int err;

		err = vsi->inner_vlan_ops.ena_stripping(vsi, ETH_P_8021Q);
		if (!err)
			...

which should resolve all the issues.


> +		return err;
> +	}
> +
diff mbox series

Patch

diff --git a/drivers/net/ethernet/intel/ice/ice_vf_lib.h b/drivers/net/ethernet/intel/ice/ice_vf_lib.h
index 48fea6fa0362..31a082e8a827 100644
--- a/drivers/net/ethernet/intel/ice/ice_vf_lib.h
+++ b/drivers/net/ethernet/intel/ice/ice_vf_lib.h
@@ -123,6 +123,9 @@  struct ice_vf {
 	u8 num_req_qs;			/* num of queue pairs requested by VF */
 	u16 num_mac;
 	u16 num_vf_qs;			/* num of queue configured per VF */
+	u8 vlan_strip_ena;		/* Outer and Inner VLAN strip enable */
+#define ICE_INNER_VLAN_STRIP_ENA	BIT(0)
+#define ICE_OUTER_VLAN_STRIP_ENA	BIT(1)
 	struct ice_mdd_vf_events mdd_rx_events;
 	struct ice_mdd_vf_events mdd_tx_events;
 	DECLARE_BITMAP(opcodes_allowlist, VIRTCHNL_OP_MAX);
diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl.c b/drivers/net/ethernet/intel/ice/ice_virtchnl.c
index c0c3e524c523..386735354dce 100644
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl.c
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl.c
@@ -1623,6 +1623,15 @@  static int ice_vc_cfg_qs_msg(struct ice_vf *vf, u8 *msg)
 		goto error_param;
 	}
 
+	for (i = 0; i < qci->num_queue_pairs; i++) {
+		if (!qci->qpair[i].rxq.crc_disable)
+			continue;
+
+		if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_CRC) ||
+		    vf->vlan_strip_ena)
+			goto error_param;
+	}
+
 	for (i = 0; i < qci->num_queue_pairs; i++) {
 		qpi = &qci->qpair[i];
 		if (qpi->txq.vsi_id != qci->vsi_id ||
@@ -1669,11 +1678,6 @@  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;
@@ -2425,6 +2429,19 @@  static int ice_vc_remove_vlan_msg(struct ice_vf *vf, u8 *msg)
 	return ice_vc_process_vlan_msg(vf, msg, false);
 }
 
+/**
+ * ice_vsi_is_rxq_crc_strip_dis - check if Rx queue CRC strip is disabled or not
+ * @vsi: pointer to the VF VSI info
+ */
+static bool ice_vsi_is_rxq_crc_strip_dis(struct ice_vsi *vsi)
+{
+	for (u16 i = 0; i < vsi->alloc_rxq; i++)
+		if (vsi->rx_rings[i]->flags & ICE_RX_FLAGS_CRC_STRIP_DIS)
+			return true;
+
+	return false;
+}
+
 /**
  * ice_vc_ena_vlan_stripping
  * @vf: pointer to the VF info
@@ -2454,6 +2471,8 @@  static int ice_vc_ena_vlan_stripping(struct ice_vf *vf)
 
 	if (vsi->inner_vlan_ops.ena_stripping(vsi, ETH_P_8021Q))
 		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
+	else
+		vf->vlan_strip_ena |= ICE_INNER_VLAN_STRIP_ENA;
 
 error_param:
 	return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING,
@@ -2489,6 +2508,8 @@  static int ice_vc_dis_vlan_stripping(struct ice_vf *vf)
 
 	if (vsi->inner_vlan_ops.dis_stripping(vsi))
 		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
+	else
+		vf->vlan_strip_ena &= ~ICE_INNER_VLAN_STRIP_ENA;
 
 error_param:
 	return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING,
@@ -2664,6 +2685,8 @@  static int ice_vf_init_vlan_stripping(struct ice_vf *vf)
 {
 	struct ice_vsi *vsi = ice_get_vf_vsi(vf);
 
+	vf->vlan_strip_ena = 0;
+
 	if (!vsi)
 		return -EINVAL;
 
@@ -2673,10 +2696,15 @@  static int ice_vf_init_vlan_stripping(struct ice_vf *vf)
 	if (ice_vf_is_port_vlan_ena(vf) && !ice_is_dvm_ena(&vsi->back->hw))
 		return 0;
 
-	if (ice_vf_vlan_offload_ena(vf->driver_caps))
-		return vsi->inner_vlan_ops.ena_stripping(vsi, ETH_P_8021Q);
-	else
-		return vsi->inner_vlan_ops.dis_stripping(vsi);
+	if (ice_vf_vlan_offload_ena(vf->driver_caps)) {
+		int err = vsi->inner_vlan_ops.ena_stripping(vsi,
+							    ETH_P_8021Q);
+		if (!err)
+			vf->vlan_strip_ena |= ICE_INNER_VLAN_STRIP_ENA;
+		return err;
+	}
+
+	return vsi->inner_vlan_ops.dis_stripping(vsi);
 }
 
 static u16 ice_vc_get_max_vlan_fltrs(struct ice_vf *vf)
@@ -3450,6 +3478,11 @@  static int ice_vc_ena_vlan_stripping_v2_msg(struct ice_vf *vf, u8 *msg)
 		goto out;
 	}
 
+	if (ice_vsi_is_rxq_crc_strip_dis(vsi)) {
+		v_ret = VIRTCHNL_STATUS_ERR_NOT_SUPPORTED;
+		goto out;
+	}
+
 	ethertype_setting = strip_msg->outer_ethertype_setting;
 	if (ethertype_setting) {
 		if (ice_vc_ena_vlan_offload(vsi,
@@ -3470,6 +3503,8 @@  static int ice_vc_ena_vlan_stripping_v2_msg(struct ice_vf *vf, u8 *msg)
 			 * enabled, is extracted in L2TAG1.
 			 */
 			ice_vsi_update_l2tsel(vsi, l2tsel);
+
+			vf->vlan_strip_ena |= ICE_OUTER_VLAN_STRIP_ENA;
 		}
 	}
 
@@ -3481,6 +3516,9 @@  static int ice_vc_ena_vlan_stripping_v2_msg(struct ice_vf *vf, u8 *msg)
 		goto out;
 	}
 
+	if (ethertype_setting)
+		vf->vlan_strip_ena |= ICE_INNER_VLAN_STRIP_ENA;
+
 out:
 	return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING_V2,
 				     v_ret, NULL, 0);
@@ -3542,6 +3580,8 @@  static int ice_vc_dis_vlan_stripping_v2_msg(struct ice_vf *vf, u8 *msg)
 			 * in L2TAG1.
 			 */
 			ice_vsi_update_l2tsel(vsi, l2tsel);
+
+			vf->vlan_strip_ena &= ~ICE_OUTER_VLAN_STRIP_ENA;
 		}
 	}
 
@@ -3551,6 +3591,9 @@  static int ice_vc_dis_vlan_stripping_v2_msg(struct ice_vf *vf, u8 *msg)
 		goto out;
 	}
 
+	if (ethertype_setting)
+		vf->vlan_strip_ena &= ~ICE_INNER_VLAN_STRIP_ENA;
+
 out:
 	return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING_V2,
 				     v_ret, NULL, 0);