[dpdk-dev] [PATCH 1/3] nfp: clean tx descriptor flags

[Alejandro Lucero]

When LSO, not doing this can led to firmware disruption. It does
not show as error because TCP ends up sending data again later on.

Fixes: 9ba3d0ae2090 (\"net/nfp: add TSO support\")

Signed-off-by: Alejandro Lucero <alejandro.lucero at netronome.com>
---
 drivers/net/nfp/nfp_net.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/net/nfp/nfp_net.c b/drivers/net/nfp/nfp_net.c
index f8ed976..9d9420d 100644
--- a/drivers/net/nfp/nfp_net.c
+++ b/drivers/net/nfp/nfp_net.c
@@ -1660,16 +1660,22 @@ static void nfp_net_read_mac(struct nfp_net_hw *hw)
 	struct nfp_net_hw *hw = txq->hw;
 
 	if (!(hw->cap & NFP_NET_CFG_CTRL_LSO))
-		return;
+		goto clean_txd;
 
 	ol_flags = mb->ol_flags;
 
 	if (!(ol_flags & PKT_TX_TCP_SEG))
-		return;
+		goto clean_txd;
 
 	txd->l4_offset = mb->l2_len + mb->l3_len + mb->l4_len;
 	txd->lso = rte_cpu_to_le_16(mb->tso_segsz);
-	txd->flags |= PCIE_DESC_TX_LSO;
+	txd->flags = PCIE_DESC_TX_LSO;
+	return;
+
+clean_txd:
+	txd->flags = 0;
+	txd->l4_offset = 0;
+	txd->lso = 0;
 }
 
 /* nfp_net_tx_cksum - Set TX CSUM offload flags in TX descriptor */
-- 
1.9.1