From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Matt Carlson" Subject: [PATCH net-next 1/6] tg3: Raise the jumbo frame BD flag threshold Date: Mon, 6 Dec 2010 10:28:49 -0800 Message-ID: <1291660134-3801-2-git-send-email-mcarlson@broadcom.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, andy@greyhouse.net, mcarlson@broadcom.com To: davem@davemloft.net Return-path: Received: from mms2.broadcom.com ([216.31.210.18]:4202 "EHLO mms2.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754409Ab0LFS3Q (ORCPT ); Mon, 6 Dec 2010 13:29:16 -0500 Sender: netdev-owner@vger.kernel.org List-ID: The current transmit routines set the jumbo frame BD flag too aggressively. This can reduce performance for common cases. This patch raises the jumbo flag threshold to 1518, up from 1500. Signed-off-by: Matt Carlson Reviewed-by: Benjamin Li --- drivers/net/tg3.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index afb79db..b8ae5e1 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -5761,7 +5761,7 @@ static netdev_tx_t tg3_start_xmit(struct sk_buff *skb, dma_unmap_addr_set(&tnapi->tx_buffers[entry], mapping, mapping); if ((tp->tg3_flags3 & TG3_FLG3_USE_JUMBO_BDFLAG) && - !mss && skb->len > ETH_DATA_LEN) + !mss && skb->len > VLAN_ETH_FRAME_LEN) base_flags |= TXD_FLAG_JMB_PKT; tg3_set_txd(tnapi, entry, mapping, len, base_flags, @@ -5995,7 +5995,7 @@ static netdev_tx_t tg3_start_xmit_dma_bug(struct sk_buff *skb, #endif if ((tp->tg3_flags3 & TG3_FLG3_USE_JUMBO_BDFLAG) && - !mss && skb->len > ETH_DATA_LEN) + !mss && skb->len > VLAN_ETH_FRAME_LEN) base_flags |= TXD_FLAG_JMB_PKT; len = skb_headlen(skb); -- 1.7.2.2