[PATCH net-next 3/9] net: r6040: Utilize skb_put_padto()
From: Florian Fainelli <f.fainelli@gmail.com>
Date: 2016-07-04 21:36:16
Subsystem:
networking drivers, rdc r6040 fast ethernet driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Florian Fainelli, Linus Torvalds
Pad the SKB to the minimum length of ETH_ZLEN by using skb_put_padto() and take this operation out of the critical section since there is no need to check any HW resources before doing that. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> --- drivers/net/ethernet/rdc/r6040.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/rdc/r6040.c b/drivers/net/ethernet/rdc/r6040.c
index 75776eee36f9..46ed093348da 100644
--- a/drivers/net/ethernet/rdc/r6040.c
+++ b/drivers/net/ethernet/rdc/r6040.c@@ -815,6 +815,9 @@ static netdev_tx_t r6040_start_xmit(struct sk_buff *skb, void __iomem *ioaddr = lp->base; unsigned long flags; + if (skb_put_padto(skb, ETH_ZLEN) < 0) + return NETDEV_TX_OK; + /* Critical Section */ spin_lock_irqsave(&lp->lock, flags);
@@ -829,11 +832,7 @@ static netdev_tx_t r6040_start_xmit(struct sk_buff *skb, /* Set TX descriptor & Transmit it */ lp->tx_free_desc--; descptr = lp->tx_insert_ptr; - if (skb->len < ETH_ZLEN) - descptr->len = ETH_ZLEN; - else - descptr->len = skb->len; - + descptr->len = skb->len; descptr->skb_ptr = skb; descptr->buf = cpu_to_le32(pci_map_single(lp->pdev, skb->data, skb->len, PCI_DMA_TODEVICE));
--
2.7.4