From patchwork Fri Apr 11 09:46:17 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Zyngier X-Patchwork-Id: 338436 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id D1B8514008B for ; Fri, 11 Apr 2014 19:46:27 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756130AbaDKJqW (ORCPT ); Fri, 11 Apr 2014 05:46:22 -0400 Received: from fw-tnat.austin.arm.com ([217.140.110.23]:53484 "EHLO collaborate-mta1.arm.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755998AbaDKJqT (ORCPT ); Fri, 11 Apr 2014 05:46:19 -0400 Received: from e102391-lin.cambridge.arm.com (e102391-lin.cambridge.arm.com [10.1.209.166]) by collaborate-mta1.arm.com (Postfix) with ESMTP id 2EBAB13F8EE; Fri, 11 Apr 2014 04:46:18 -0500 (CDT) From: Marc Zyngier To: linux-sunxi@googlegroups.com, netdev@vger.kernel.org Cc: Stefan Roese , Maxime Ripard Subject: [PATCH] net: sun4i-emac: add promiscuous support Date: Fri, 11 Apr 2014 10:46:17 +0100 Message-Id: <1397209577-24443-1-git-send-email-marc.zyngier@arm.com> X-Mailer: git-send-email 1.8.3.4 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The sun4i-emac driver is rather primitive, and doesn't support promiscuous mode. This makes usage such as bridging impossible, which is a shame on virtualization capable HW such as the Allwinner A20. The fix is fairly simple: move the RX setup code to the ndo_set_rx_mode vector, and add the required HW configuration when IFF_PROMISC is passed by the core code. This has been tested on a generic A20 box running a few virtual machines hanging off a bridge with the EMAC chip as the link to the outside world. Cc: Stefan Roese Cc: Maxime Ripard Signed-off-by: Marc Zyngier Acked-by: Stefan Roese --- drivers/net/ethernet/allwinner/sun4i-emac.c | 30 ++++++++++++++++++++--------- 1 file changed, 21 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/allwinner/sun4i-emac.c b/drivers/net/ethernet/allwinner/sun4i-emac.c index 511f6ee..6343beb 100644 --- a/drivers/net/ethernet/allwinner/sun4i-emac.c +++ b/drivers/net/ethernet/allwinner/sun4i-emac.c @@ -268,15 +268,6 @@ static unsigned int emac_setup(struct net_device *ndev) writel(reg_val | EMAC_TX_MODE_ABORTED_FRAME_EN, db->membase + EMAC_TX_MODE_REG); - /* set up RX */ - reg_val = readl(db->membase + EMAC_RX_CTL_REG); - - writel(reg_val | EMAC_RX_CTL_PASS_LEN_OOR_EN | - EMAC_RX_CTL_ACCEPT_UNICAST_EN | EMAC_RX_CTL_DA_FILTER_EN | - EMAC_RX_CTL_ACCEPT_MULTICAST_EN | - EMAC_RX_CTL_ACCEPT_BROADCAST_EN, - db->membase + EMAC_RX_CTL_REG); - /* set MAC */ /* set MAC CTL0 */ reg_val = readl(db->membase + EMAC_MAC_CTL0_REG); @@ -309,6 +300,26 @@ static unsigned int emac_setup(struct net_device *ndev) return 0; } +static void emac_set_rx_mode(struct net_device *ndev) +{ + struct emac_board_info *db = netdev_priv(ndev); + unsigned int reg_val; + + /* set up RX */ + reg_val = readl(db->membase + EMAC_RX_CTL_REG); + + if (ndev->flags & IFF_PROMISC) + reg_val |= EMAC_RX_CTL_PASS_ALL_EN; + else + reg_val &= ~EMAC_RX_CTL_PASS_ALL_EN; + + writel(reg_val | EMAC_RX_CTL_PASS_LEN_OOR_EN | + EMAC_RX_CTL_ACCEPT_UNICAST_EN | EMAC_RX_CTL_DA_FILTER_EN | + EMAC_RX_CTL_ACCEPT_MULTICAST_EN | + EMAC_RX_CTL_ACCEPT_BROADCAST_EN, + db->membase + EMAC_RX_CTL_REG); +} + static unsigned int emac_powerup(struct net_device *ndev) { struct emac_board_info *db = netdev_priv(ndev); @@ -782,6 +793,7 @@ static const struct net_device_ops emac_netdev_ops = { .ndo_stop = emac_stop, .ndo_start_xmit = emac_start_xmit, .ndo_tx_timeout = emac_timeout, + .ndo_set_rx_mode = emac_set_rx_mode, .ndo_do_ioctl = emac_ioctl, .ndo_change_mtu = eth_change_mtu, .ndo_validate_addr = eth_validate_addr,