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Date: Wed, 22 Sep 2010 23:00:14 -0700 (PDT) From: David Miller <davem@...emloft.net> To: eric.dumazet@...il.com Cc: jeffrey.t.kirsher@...el.com, netdev@...r.kernel.org, gospo@...hat.com, bphilips@...ell.com, yi.zou@...el.com Subject: Re: [net-next-2.6 PATCH] e1000/e1000e/igb/ixgb/ixgbe: set NETIF_F_HIGHDMA for VLAN feature flags From: Eric Dumazet <eric.dumazet@...il.com> Date: Thu, 23 Sep 2010 07:28:10 +0200 > Le mercredi 22 septembre 2010 à 21:20 -0700, David Miller a écrit : >> From: Jeff Kirsher <jeffrey.t.kirsher@...el.com> >> Date: Wed, 22 Sep 2010 20:57:58 -0700 >> >> > From: Yi Zou <yi.zou@...el.com> >> > >> > If the netdev->features is set with NETIF_F_HIGHDMA, we should set the >> > corresponding netdev->vlan_features as well to allow VLAN netdev created >> > on top of the real netdev to be able to also benefit from HIGHDMA on 32bit >> > system, reducing the performance hit that is caused by __skb_linearize(), >> > particularly for large send. This is fixed in this patch for all Intel e1000, >> > e1000e, igb, ixgbe, and ixgbe drivers since this should be beneficial >> > to all devices supported by these drivers. >> > >> > Signed-off-by: Yi Zou <yi.zou@...el.com> >> > Tested-by: Emil Tantilov <emil.s.tantilov@...el.com> >> > Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com> >> >> Applied. > > Maybe this could be done in core network. Indeeed, just as we do for NETIF_F_GRO now. -- 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
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