[56/69] net/i40e/base: add CRC stripping capability
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Message ID 20191202074935.97629-57-xiaolong.ye@intel.com
State New
Delegated to: xiaolong ye
Headers show
Series
  • update for i40e base code
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Context Check Description
ci/Intel-compilation success Compilation OK
ci/checkpatch success coding style OK

Commit Message

Ye Xiaolong Dec. 2, 2019, 7:49 a.m. UTC 
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.

This change is to support DCR 2685 "Enable/disable CRC
stripping for DPDK VFs"

Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr@intel.com>
Reviewed-by: Keller Jacob E <jacob.e.keller@intel.com>
Reviewed-by: Kirsher Jeffrey T <jeffrey.t.kirsher@intel.com>
Reviewed-by: Yang Lihong <lihong.yang@intel.com>
Signed-off-by: Xiaolong Ye <xiaolong.ye@intel.com>
---
 drivers/net/i40e/base/virtchnl.h | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

Patch
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diff --git a/drivers/net/i40e/base/virtchnl.h b/drivers/net/i40e/base/virtchnl.h
index f659fbcab..0ea03d06b 100644
--- a/drivers/net/i40e/base/virtchnl.h
+++ b/drivers/net/i40e/base/virtchnl.h
@@ -238,6 +238,7 @@  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
@@ -289,7 +290,13 @@  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 */
@@ -301,7 +308,8 @@  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;