[dpdk-dev] [PATCH v2 2/2] ethdev: add new offload flag to keep CRC

[Ferruh Yigit <ferruh.yigit@intel.com>]

DEV_RX_OFFLOAD_KEEP_CRC offload flag added.

DEV_RX_OFFLOAD_CRC_STRIP flag will remain one more release but default
behavior in PMDs is to strip the CRC independent from this flag.

Until DEV_RX_OFFLOAD_CRC_STRIP flag is removed:
- Setting both KEEP_CRC & CRC_STRIP is INVALID
- Setting only CRC_STRIP PMD should strip the CRC
- Setting only KEEP_CRC PMD should keep the CRC
- Not setting both PMD should strip the CRC

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
---
 lib/librte_ether/rte_ethdev.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index 5e13dca6a..ab1030d42 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -939,6 +939,9 @@ struct rte_eth_conf {
 #define DEV_RX_OFFLOAD_SCATTER		0x00002000
 #define DEV_RX_OFFLOAD_TIMESTAMP	0x00004000
 #define DEV_RX_OFFLOAD_SECURITY         0x00008000
+/* Invalid to set both DEV_RX_OFFLOAD_CRC_STRIP and DEV_RX_OFFLOAD_KEEP_CRC
+ * No DEV_RX_OFFLOAD_CRC_STRIP flag means stripping CRC */
+#define DEV_RX_OFFLOAD_KEEP_CRC		0x00010000
 #define DEV_RX_OFFLOAD_CHECKSUM (DEV_RX_OFFLOAD_IPV4_CKSUM | \
 				 DEV_RX_OFFLOAD_UDP_CKSUM | \
 				 DEV_RX_OFFLOAD_TCP_CKSUM)
-- 
2.13.6