From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Kok, Auke" Subject: [PATCH 04/18] e1000: Enble early receive (ERT) on 82573 Date: Wed, 01 Nov 2006 09:51:37 -0800 Message-ID: <20061101175137.2356.92225.stgit@gitlost.site> References: <20061101175043.2356.13659.stgit@gitlost.site> Cc: netdev@vger.kernel.org, "Brandeburg, Jesse" , "Kok, Auke" , "Kok, Auke" , "Ronciak, John" Return-path: Received: from [63.64.152.142] ([63.64.152.142]:15888 "EHLO gitlost.site") by vger.kernel.org with ESMTP id S1946961AbWKARm7 (ORCPT ); Wed, 1 Nov 2006 12:42:59 -0500 To: "Garzik, Jeff" In-Reply-To: <20061101175043.2356.13659.stgit@gitlost.site> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Enable early receives on 82573 for jumbo frame performance. Jumbo's are only supported on 82573L with ASPM disabled. Signed-off-by: Auke Kok --- drivers/net/e1000/e1000_main.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index 1e1198b..194a07d 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -1934,6 +1934,12 @@ e1000_configure_rx(struct e1000_adapter E1000_WRITE_REG(hw, RXCSUM, rxcsum); } + /* enable early receives on 82573, only takes effect if using > 2048 + * byte total frame size. for example only for jumbo frames */ +#define E1000_ERT_2048 0x100 + if (hw->mac_type == e1000_82573) + E1000_WRITE_REG(hw, ERT, E1000_ERT_2048); + /* Enable Receives */ E1000_WRITE_REG(hw, RCTL, rctl); } --- Auke Kok