[PATCH net-next 4/9] dpaa2-eth: use tso_features_check()

[Eric Dumazet <edumazet@google.com>]

We must fallback to GSO if a TSO packet has too big headers,
or risk corruptions.

Fixes: 3dc709e0cd47 ("dpaa2-eth: add support for software TSO")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Ioana Ciornei <ioana.ciornei@nxp.com>
---
 drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
index 9335703768a9b66ca771c7f4a710cc6eb714bc61..47a25e0fa1d04d96bdffe27ce5beea0b3104a30a 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -1270,6 +1270,7 @@ static int dpaa2_eth_build_gso_fd(struct dpaa2_eth_priv *priv,
 
 	/* Initialize the TSO handler, and prepare the first payload */
 	hdr_len = tso_start(skb, &tso);
+	DEBUG_NET_WARN_ON_ONCE(hdr_len > TSO_HEADER_SIZE);
 	*total_fds_len = 0;
 
 	total_len = skb->len - hdr_len;
@@ -3029,6 +3030,7 @@ static int dpaa2_eth_setup_tc(struct net_device *net_dev,
 
 static const struct net_device_ops dpaa2_eth_ops = {
 	.ndo_open = dpaa2_eth_open,
+	.ndo_features_check = tso_features_check,
 	.ndo_start_xmit = dpaa2_eth_tx,
 	.ndo_stop = dpaa2_eth_stop,
 	.ndo_set_mac_address = dpaa2_eth_set_addr,
-- 
2.53.0.1213.gd9a14994de-goog