From mboxrd@z Thu Jan 1 00:00:00 1970 From: Govindarajulu Varadarajan <_govind@gmx.com> Subject: [PATCH net-next 3/3] enic: add ethtool support for set/get rx_copybreak Date: Tue, 22 Jul 2014 23:01:08 +0530 Message-ID: <1406050268-13329-4-git-send-email-_govind@gmx.com> References: <1406050268-13329-1-git-send-email-_govind@gmx.com> Cc: ssujith@cisco.com, benve@cisco.com, Govindarajulu Varadarajan <_govind@gmx.com> To: davem@davemloft.net, netdev@vger.kernel.org, ben@decadent.org.uk Return-path: Received: from mout.gmx.com ([74.208.4.200]:64731 "EHLO mout.gmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752620AbaGVRcR (ORCPT ); Tue, 22 Jul 2014 13:32:17 -0400 In-Reply-To: <1406050268-13329-1-git-send-email-_govind@gmx.com> Sender: netdev-owner@vger.kernel.org List-ID: This patch provides set_ringparam & get_ringparam ethtool_ops to set/get rx_copybreak. As of now, enic does not support change of rx/tx ring size. Allow change of rx_copybreak alone. Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com> --- drivers/net/ethernet/cisco/enic/enic_ethtool.c | 31 ++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/drivers/net/ethernet/cisco/enic/enic_ethtool.c b/drivers/net/ethernet/cisco/enic/enic_ethtool.c index 523c9ce..6780719 100644 --- a/drivers/net/ethernet/cisco/enic/enic_ethtool.c +++ b/drivers/net/ethernet/cisco/enic/enic_ethtool.c @@ -18,6 +18,7 @@ #include #include +#include #include "enic_res.h" #include "enic.h" @@ -379,6 +380,34 @@ static int enic_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd, return ret; } +static void enic_get_ringparam(struct net_device *netdev, + struct ethtool_ringparam *ring) +{ + struct enic *enic = netdev_priv(netdev); + + ring->rx_max_pending = enic->rq[0].ring.desc_count; + ring->rx_pending = enic->rq[0].ring.desc_count; + ring->tx_max_pending = enic->wq[0].ring.desc_count; + ring->tx_pending = enic->wq[0].ring.desc_count; + ring->rx_copybreak_pending = enic->rx_copybreak; + ring->rx_max_copybreak_pending = netdev->mtu + VLAN_ETH_HLEN; +} + +static int enic_set_ringparam(struct net_device *netdev, + struct ethtool_ringparam *ring) +{ + struct enic *enic = netdev_priv(netdev); + + if (ring->rx_copybreak_pending > (netdev->mtu + VLAN_ETH_HLEN) || + enic->rq[0].ring.desc_count != ring->rx_pending || + enic->wq[0].ring.desc_count != ring->tx_pending || + ring->rx_mini_pending || ring->rx_jumbo_pending) + return -EINVAL; + enic->rx_copybreak = ring->rx_copybreak_pending; + + return 0; +} + static const struct ethtool_ops enic_ethtool_ops = { .get_settings = enic_get_settings, .get_drvinfo = enic_get_drvinfo, @@ -391,6 +420,8 @@ static const struct ethtool_ops enic_ethtool_ops = { .get_coalesce = enic_get_coalesce, .set_coalesce = enic_set_coalesce, .get_rxnfc = enic_get_rxnfc, + .get_ringparam = enic_get_ringparam, + .set_ringparam = enic_set_ringparam, }; void enic_set_ethtool_ops(struct net_device *netdev) -- 2.0.2