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From: Florian Fainelli <f.fainelli@gmail.com>
To: netdev@vger.kernel.org
Cc: davem@davemloft.net, Florian Fainelli <f.fainelli@gmail.com>
Subject: [PATCH net 1/2] net: systemport: Utilize skb_put_padto()
Date: Tue,  3 Jan 2017 16:34:48 -0800	[thread overview]
Message-ID: <20170104003449.27078-2-f.fainelli@gmail.com> (raw)
In-Reply-To: <20170104003449.27078-1-f.fainelli@gmail.com>

Since we need to pad our packets, utilize skb_put_padto() which
increases skb->len by how much we need to pad, allowing us to eliminate
the test on skb->len right below.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 drivers/net/ethernet/broadcom/bcmsysport.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c
index 25d1eb4933d0..e67908b5edfe 100644
--- a/drivers/net/ethernet/broadcom/bcmsysport.c
+++ b/drivers/net/ethernet/broadcom/bcmsysport.c
@@ -1028,13 +1028,12 @@ static netdev_tx_t bcm_sysport_xmit(struct sk_buff *skb,
 	 * (including FCS and tag) because the length verification is done after
 	 * the Broadcom tag is stripped off the ingress packet.
 	 */
-	if (skb_padto(skb, ETH_ZLEN + ENET_BRCM_TAG_LEN)) {
+	if (skb_put_padto(skb, ETH_ZLEN + ENET_BRCM_TAG_LEN)) {
 		ret = NETDEV_TX_OK;
 		goto out;
 	}
 
-	skb_len = skb->len < ETH_ZLEN + ENET_BRCM_TAG_LEN ?
-			ETH_ZLEN + ENET_BRCM_TAG_LEN : skb->len;
+	skb_len = skb->len;
 
 	mapping = dma_map_single(kdev, skb->data, skb_len, DMA_TO_DEVICE);
 	if (dma_mapping_error(kdev, mapping)) {
-- 
2.9.3

  reply	other threads:[~2017-01-04  0:35 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-04  0:34 [PATCH net 0/2] net: systemport: Fix padding vs. TSB insertion Florian Fainelli
2017-01-04  0:34 ` Florian Fainelli [this message]
2017-01-04  0:34 ` [PATCH net 2/2] net: systemport: Pad packet before inserting TSB Florian Fainelli
2017-01-04 10:04   ` Sergei Shtylyov
2017-01-04 18:34 ` [PATCH net 0/2] net: systemport: Fix padding vs. TSB insertion David Miller

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