[dpdk-dev] [PATCH 2/4] ixgbe: support VxLAN & NVGRE RX checksum off-load

[Wenzhuo Lu]

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 at intel.com>
---
 drivers/net/ixgbe/ixgbe_rxtx.c | 11 ++++++++++-
 lib/librte_mbuf/rte_mbuf.c     |  1 +
 lib/librte_mbuf/rte_mbuf.h     |  1 +
 3 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
index 52a263c..512ac3a 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_OUTER_IP_CKSUM_BAD;
+	}
+
+	return pkt_flags;
 }
 
 /*
diff --git a/lib/librte_mbuf/rte_mbuf.c b/lib/librte_mbuf/rte_mbuf.c
index c18b438..5d4af39 100644
--- a/lib/librte_mbuf/rte_mbuf.c
+++ b/lib/librte_mbuf/rte_mbuf.c
@@ -260,6 +260,7 @@ const char *rte_get_rx_ol_flag_name(uint64_t mask)
 	/* case PKT_RX_MAC_ERR: return "PKT_RX_MAC_ERR"; */
 	case PKT_RX_IEEE1588_PTP: return "PKT_RX_IEEE1588_PTP";
 	case PKT_RX_IEEE1588_TMST: return "PKT_RX_IEEE1588_TMST";
+	case PKT_RX_OUTER_IP_CKSUM_BAD: return "PKT_RX_OUTER_IP_CKSUM_BAD";
 	default: return NULL;
 	}
 }
diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
index f234ac9..5ad5e59 100644
--- a/lib/librte_mbuf/rte_mbuf.h
+++ b/lib/librte_mbuf/rte_mbuf.h
@@ -98,6 +98,7 @@ extern "C" {
 #define PKT_RX_FDIR_ID       (1ULL << 13) /**< FD id reported if FDIR match. */
 #define PKT_RX_FDIR_FLX      (1ULL << 14) /**< Flexible bytes reported if FDIR match. */
 #define PKT_RX_QINQ_PKT      (1ULL << 15)  /**< RX packet with double VLAN stripped. */
+#define PKT_RX_OUTER_IP_CKSUM_BAD (1ULL << 16)  /**< Outer IP cksum of RX pkt. is not OK. */
 /* add new RX flags here */
 
 /* add new TX flags here */
-- 
1.9.3