[dpdk-dev] [PATCH v4 4/5] ixgbe: support VxLAN & NVGRE RX checksum off-load

[Wenzhuo Lu <wenzhuo.lu@intel.com>]

X550 will do VxLAN & NVGRE RX checksum off-load automatically.
This patch exposes the result of the checksum off-load.

Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
---
 drivers/net/ixgbe/ixgbe_ethdev.c |  4 ++++
 drivers/net/ixgbe/ixgbe_rxtx.c   | 11 ++++++++++-
 lib/librte_ether/rte_ethdev.h    |  1 +
 lib/librte_mbuf/rte_mbuf.c       |  2 +-
 lib/librte_mbuf/rte_mbuf.h       |  2 +-
 5 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index eadf793..3ca17a9 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -2799,6 +2799,10 @@ ixgbe_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 	    !RTE_ETH_DEV_SRIOV(dev).active)
 		dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO;
 
+	if (hw->mac.type == ixgbe_mac_X550 ||
+	    hw->mac.type == ixgbe_mac_X550EM_x)
+		dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM;
+
 	dev_info->tx_offload_capa =
 		DEV_TX_OFFLOAD_VLAN_INSERT |
 		DEV_TX_OFFLOAD_IPV4_CKSUM  |
diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
index e95e6b7..6b913ee 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx.c
@@ -1003,6 +1003,8 @@ rx_desc_status_to_pkt_flags(uint32_t rx_status)
 static inline uint64_t
 rx_desc_error_to_pkt_flags(uint32_t rx_status)
 {
+	uint64_t pkt_flags;
+
 	/*
 	 * Bit 31: IPE, IPv4 checksum error
 	 * Bit 30: L4I, L4I integrity error
@@ -1011,8 +1013,15 @@ rx_desc_error_to_pkt_flags(uint32_t rx_status)
 		0,  PKT_RX_L4_CKSUM_BAD, PKT_RX_IP_CKSUM_BAD,
 		PKT_RX_IP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD
 	};
-	return error_to_pkt_flags_map[(rx_status >>
+	pkt_flags = error_to_pkt_flags_map[(rx_status >>
 		IXGBE_RXDADV_ERR_CKSUM_BIT) & IXGBE_RXDADV_ERR_CKSUM_MSK];
+
+	if ((rx_status & IXGBE_RXD_STAT_OUTERIPCS) &&
+	    (rx_status & IXGBE_RXDADV_ERR_OUTERIPER)) {
+		pkt_flags |= PKT_RX_EIP_CKSUM_BAD;
+	}
+
+	return pkt_flags;
 }
 
 /*
diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index f1f96c1..e7e7a66 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -810,6 +810,7 @@ struct rte_eth_conf {
 #define DEV_RX_OFFLOAD_TCP_CKSUM   0x00000008
 #define DEV_RX_OFFLOAD_TCP_LRO     0x00000010
 #define DEV_RX_OFFLOAD_QINQ_STRIP  0x00000020
+#define DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM 0x00000040
 
 /**
  * TX offload capabilities of a device.
diff --git a/lib/librte_mbuf/rte_mbuf.c b/lib/librte_mbuf/rte_mbuf.c
index c18b438..dc0467c 100644
--- a/lib/librte_mbuf/rte_mbuf.c
+++ b/lib/librte_mbuf/rte_mbuf.c
@@ -253,7 +253,7 @@ const char *rte_get_rx_ol_flag_name(uint64_t mask)
 	case PKT_RX_FDIR: return "PKT_RX_FDIR";
 	case PKT_RX_L4_CKSUM_BAD: return "PKT_RX_L4_CKSUM_BAD";
 	case PKT_RX_IP_CKSUM_BAD: return "PKT_RX_IP_CKSUM_BAD";
-	/* case PKT_RX_EIP_CKSUM_BAD: return "PKT_RX_EIP_CKSUM_BAD"; */
+	case PKT_RX_EIP_CKSUM_BAD: return "PKT_RX_EIP_CKSUM_BAD";
 	/* case PKT_RX_OVERSIZE: return "PKT_RX_OVERSIZE"; */
 	/* case PKT_RX_HBUF_OVERFLOW: return "PKT_RX_HBUF_OVERFLOW"; */
 	/* case PKT_RX_RECIP_ERR: return "PKT_RX_RECIP_ERR"; */
diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
index c973e9b..c4e7e25 100644
--- a/lib/librte_mbuf/rte_mbuf.h
+++ b/lib/librte_mbuf/rte_mbuf.h
@@ -88,7 +88,7 @@ extern "C" {
 #define PKT_RX_FDIR          (1ULL << 2)  /**< RX packet with FDIR match indicate. */
 #define PKT_RX_L4_CKSUM_BAD  (1ULL << 3)  /**< L4 cksum of RX pkt. is not OK. */
 #define PKT_RX_IP_CKSUM_BAD  (1ULL << 4)  /**< IP cksum of RX pkt. is not OK. */
-#define PKT_RX_EIP_CKSUM_BAD (0ULL << 0)  /**< External IP header checksum error. */
+#define PKT_RX_EIP_CKSUM_BAD (1ULL << 5)  /**< External IP header checksum error. */
 #define PKT_RX_OVERSIZE      (0ULL << 0)  /**< Num of desc of an RX pkt oversize. */
 #define PKT_RX_HBUF_OVERFLOW (0ULL << 0)  /**< Header buffer overflow. */
 #define PKT_RX_RECIP_ERR     (0ULL << 0)  /**< Hardware processing error. */
-- 
1.9.3