[PATCH net-next] iavf: use skb_put_padto()

[Eric Dumazet <edumazet@kernel.org>]

Replace skb_pad() and the manual skb->len and tail pointer updates
in iavf_xmit_frame() with skb_put_padto().

No functional change.

Signed-off-by: Eric Dumazet <edumazet@kernel.org>
---
Cc: Tony Nguyen <anthony.l.nguyen@intel.com>
Cc: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Cc: Andrew Lunn <andrew+netdev@lunn.ch>
---
Part of a medium term plan to get rid of skb_pad(), source of many mistakes.

 drivers/net/ethernet/intel/iavf/iavf_txrx.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/intel/iavf/iavf_txrx.c b/drivers/net/ethernet/intel/iavf/iavf_txrx.c
index c30abf17cf5d3cdc715f5da38474c4d40ab70a05..8982cf75466faa368b84a1f57735e4523490c3f3 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_txrx.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_txrx.c
@@ -2396,12 +2396,8 @@ netdev_tx_t iavf_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
 	/* hardware can't handle really short frames, hardware padding works
 	 * beyond this point
 	 */
-	if (unlikely(skb->len < IAVF_MIN_TX_LEN)) {
-		if (skb_pad(skb, IAVF_MIN_TX_LEN - skb->len))
-			return NETDEV_TX_OK;
-		skb->len = IAVF_MIN_TX_LEN;
-		skb_set_tail_pointer(skb, IAVF_MIN_TX_LEN);
-	}
+	if (skb_put_padto(skb, IAVF_MIN_TX_LEN))
+		return NETDEV_TX_OK;
 
 	return iavf_xmit_frame_ring(skb, tx_ring);
 }
-- 
2.53.0