netdev - [PATCH 1/2 net-next] ixgbe: use skb

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20120618105816.5fdd0b90@nehalam.linuxnetplumber.net>
Date:	Mon, 18 Jun 2012 10:58:16 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
	Bruce Allan <bruce.w.allan@...el.com>,
	Carolyn Wyborny <carolyn.wyborny@...el.com>,
	Don Skidmore <donald.c.skidmore@...el.com>,
	Greg Rose <gregory.v.rose@...el.com>,
	Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@...el.com>,
	Alex Duyck <alexander.h.duyck@...el.com>,
	"David S. Miller" <davem@...emloft.net>
Cc:	e1000-devel@...ts.sourceforge.net, netdev@...r.kernel.org
Subject: [PATCH 1/2 net-next] ixgbe: use skb_padto

The code to pad packets here is the same effective code as
the existing inline function skb_padto(). There is a minor
performance gain since skb_padto() also uses unlikely().

Signed-off-by: Stephen Hemminger <shemminger@...tta.com>


--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c	2012-06-18 10:53:09.130376800 -0700
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c	2012-06-18 10:55:13.104540844 -0700
@@ -6389,11 +6389,8 @@ static netdev_tx_t ixgbe_xmit_frame(stru
 	 * The minimum packet size for olinfo paylen is 17 so pad the skb
 	 * in order to meet this minimum size requirement.
 	 */
-	if (skb->len < 17) {
-		if (skb_padto(skb, 17))
-			return NETDEV_TX_OK;
-		skb->len = 17;
-	}
+	if (skb_padto(skb, 17))
+		return NETDEV_TX_OK;
 
 	tx_ring = adapter->tx_ring[skb->queue_mapping];
 	return ixgbe_xmit_frame_ring(skb, adapter, tx_ring);
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html