[dpdk-stable] [PATCH] net/nfp: fix mbuf flags with cksum good

[Alejandro Lucero]

If checksum offload enabled and hardware reports checksum as good,
update mbuf ol_flags with proper *_CKSUM_GOOD bits.

Fixes: b812daadad0d ("nfp: add Rx and Tx")
Cc: stable at dpdk.org

Signed-off-by: Alejandro Lucero <alejandro.lucero at netronome.com>
---
 drivers/net/nfp/nfp_net.c     | 15 +++++++--------
 drivers/net/nfp/nfp_net_pmd.h |  2 ++
 2 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/drivers/net/nfp/nfp_net.c b/drivers/net/nfp/nfp_net.c
index 6e5e305..760a66a 100644
--- a/drivers/net/nfp/nfp_net.c
+++ b/drivers/net/nfp/nfp_net.c
@@ -1786,21 +1786,20 @@ enum nfp_qcp_ptr {
 		return;
 
 	/* If IPv4 and IP checksum error, fail */
-	if ((rxd->rxd.flags & PCIE_DESC_RX_IP4_CSUM) &&
-	    !(rxd->rxd.flags & PCIE_DESC_RX_IP4_CSUM_OK))
+	if (unlikely((rxd->rxd.flags & PCIE_DESC_RX_IP4_CSUM) &&
+	    !(rxd->rxd.flags & PCIE_DESC_RX_IP4_CSUM_OK)))
 		mb->ol_flags |= PKT_RX_IP_CKSUM_BAD;
+	else
+		mb->ol_flags |= PKT_RX_IP_CKSUM_GOOD;
 
 	/* If neither UDP nor TCP return */
 	if (!(rxd->rxd.flags & PCIE_DESC_RX_TCP_CSUM) &&
 	    !(rxd->rxd.flags & PCIE_DESC_RX_UDP_CSUM))
 		return;
 
-	if ((rxd->rxd.flags & PCIE_DESC_RX_TCP_CSUM) &&
-	    !(rxd->rxd.flags & PCIE_DESC_RX_TCP_CSUM_OK))
-		mb->ol_flags |= PKT_RX_L4_CKSUM_BAD;
-
-	if ((rxd->rxd.flags & PCIE_DESC_RX_UDP_CSUM) &&
-	    !(rxd->rxd.flags & PCIE_DESC_RX_UDP_CSUM_OK))
+	if (likely(rxd->rxd.flags & PCIE_DESC_RX_L4_CSUM_OK))
+		mb->ol_flags |= PKT_RX_L4_CKSUM_GOOD;
+	else
 		mb->ol_flags |= PKT_RX_L4_CKSUM_BAD;
 }
 
diff --git a/drivers/net/nfp/nfp_net_pmd.h b/drivers/net/nfp/nfp_net_pmd.h
index c1b044e..b01036d 100644
--- a/drivers/net/nfp/nfp_net_pmd.h
+++ b/drivers/net/nfp/nfp_net_pmd.h
@@ -293,6 +293,8 @@ struct nfp_net_txq {
 #define PCIE_DESC_RX_UDP_CSUM_OK        (1 <<  1)
 #define PCIE_DESC_RX_VLAN               (1 <<  0)
 
+#define PCIE_DESC_RX_L4_CSUM_OK         (PCIE_DESC_RX_TCP_CSUM_OK | \
+					 PCIE_DESC_RX_UDP_CSUM_OK)
 struct nfp_net_rx_desc {
 	union {
 		/* Freelist descriptor */
-- 
1.9.1