[PATCH] net/nfp: fix return path in TSO processing function

["Niklas Söderlund" <niklas.soderlund@corigine.com>]

From: Fei Qin <fei.qin@corigine.com>

When enable TSO, nfp_net_nfdk_tx_tso() fills segment information in Tx
descriptor. However, the return path for TSO is lost and the LSO related
fields of Tx descriptor is filled with zeros which prevents packets from
being sent.

This patch fixes the return path in TSO processing function to make sure
TSO works fine.

Fixes: c73dced48c8c ("net/nfp: add NFDk Tx")
Cc: stable@dpdk.org

Signed-off-by: Fei Qin <fei.qin@corigine.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@corigine.com>
Reviewed-by: Chaoyong He <chaoyong.he@corigine.com>
Signed-off-by: Niklas Söderlund <niklas.soderlund@corigine.com>
---
 drivers/net/nfp/nfp_rxtx.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/nfp/nfp_rxtx.c b/drivers/net/nfp/nfp_rxtx.c
index 38377ca2182e..01cffdfde0b4 100644
--- a/drivers/net/nfp/nfp_rxtx.c
+++ b/drivers/net/nfp/nfp_rxtx.c
@@ -1135,6 +1135,8 @@ nfp_net_nfdk_tx_tso(struct nfp_net_txq *txq, struct rte_mbuf *mb)
 	txd.lso_hdrlen = mb->l2_len + mb->l3_len + mb->l4_len;
 	txd.lso_totsegs = (mb->pkt_len + mb->tso_segsz) / mb->tso_segsz;
 
+	return txd.raw;
+
 clean_txd:
 	txd.l3_offset = 0;
 	txd.l4_offset = 0;
-- 
2.38.1