net/i40e/base: add CRC stripping capability

Some VFs may want to disable CRC stripping on incoming packets
so create an offload for that. The VF already sends information
about configuring it's RX queues so use that structure to
indicate that the CRC stripping should be enabled or not.

Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr@intel.com>
Signed-off-by: Xiaolong Ye <xiaolong.ye@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Beilei Xing <beilei.xing@intel.com>

diff --git a/drivers/net/i40e/base/i40e_dcb.h b/drivers/net/i40e/base/i40e_dcb.h
index 520c7db..60193c9 100644 (file)
--- a/drivers/net/i40e/base/i40e_dcb.h
+++ b/drivers/net/i40e/base/i40e_dcb.h
@@ -1,5 +1,5 @@
 /* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2001-2018
+ * Copyright(c) 2001-2019
  */
 
 #ifndef _I40E_DCB_H_
@@ -205,5 +205,4 @@ i40e_get_fw_lldp_status(struct i40e_hw *hw,
 enum i40e_status_code i40e_set_dcb_config(struct i40e_hw *hw);
 enum i40e_status_code i40e_dcb_config_to_lldp(u8 *lldpmib, u16 *miblen,
                                              struct i40e_dcbx_config *dcbcfg);
-
 #endif /* _I40E_DCB_H_ */

diff --git a/drivers/net/i40e/base/virtchnl.h b/drivers/net/i40e/base/virtchnl.h
index c677d0e..c613d47 100644 (file)
--- a/drivers/net/i40e/base/virtchnl.h
+++ b/drivers/net/i40e/base/virtchnl.h
@@ -228,6 +228,7 @@ VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_vsi_resource);
 #define VIRTCHNL_VF_OFFLOAD_RSS_REG            0x00000010
 #define VIRTCHNL_VF_OFFLOAD_WB_ON_ITR          0x00000020
 #define VIRTCHNL_VF_OFFLOAD_REQ_QUEUES         0x00000040
+#define VIRTCHNL_VF_OFFLOAD_CRC                        0x00000080
 #define VIRTCHNL_VF_OFFLOAD_VLAN               0x00010000
 #define VIRTCHNL_VF_OFFLOAD_RX_POLLING         0x00020000
 #define VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2      0x00040000
@@ -276,7 +277,13 @@ VIRTCHNL_CHECK_STRUCT_LEN(24, virtchnl_txq_info);
 /* VIRTCHNL_OP_CONFIG_RX_QUEUE
  * VF sends this message to set up parameters for one RX queue.
  * External data buffer contains one instance of virtchnl_rxq_info.
- * PF configures requested queue and returns a status code.
+ * PF configures requested queue and returns a status code. The
+ * crc_disable flag disables CRC stripping on the VF. Setting
+ * the crc_disable flag to 1 will disable CRC stripping for each
+ * queue in the VF where the flag is set. The VIRTCHNL_VF_OFFLOAD_CRC
+ * offload must have been set prior to sending this info or the PF
+ * will ignore the request. This flag should be set the same for
+ * all of the queues for a VF.
  */
 
 /* Rx queue config info */
@@ -288,7 +295,8 @@ struct virtchnl_rxq_info {
        u16 splithdr_enabled; /* deprecated with AVF 1.0 */
        u32 databuffer_size;
        u32 max_pkt_size;
-       u32 pad1;
+       u8 crc_disable;
+       u8 pad1[3];
        u64 dma_ring_addr;
        enum virtchnl_rx_hsplit rx_split_pos; /* deprecated with AVF 1.0 */
        u32 pad2;