From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yevgeny Petrilin Subject: [PATCH 7/8] net/mlx4_en: adding loopback support Date: Mon, 21 Nov 2011 10:43:54 +0200 Message-ID: <4ECA0F4A.30308@mellanox.co.il> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit Cc: , , , , To: Return-path: Received: from eu1sys200aog101.obsmtp.com ([207.126.144.111]:55694 "HELO eu1sys200aog101.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1756179Ab1KULTW (ORCPT ); Mon, 21 Nov 2011 06:19:22 -0500 Sender: netdev-owner@vger.kernel.org List-ID: From: Amir Vadai Device must be in promiscious mode or DMAC must be same as the host MAC, or else packet will be dropped by the HW rx filtering. Signed-off-by: Amir Vadai --- drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 1 + drivers/net/ethernet/mellanox/mlx4/en_tx.c | 3 +++ include/linux/mlx4/qp.h | 1 + 3 files changed, 5 insertions(+), 0 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index 78d776b..55fdbce 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -1088,6 +1088,7 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, dev->features = dev->hw_features | NETIF_F_HIGHDMA | NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER; + dev->hw_features |= NETIF_F_LOOPBACK; mdev->pndev[port] = dev; diff --git a/drivers/net/ethernet/mellanox/mlx4/en_tx.c b/drivers/net/ethernet/mellanox/mlx4/en_tx.c index 3094f94..f9093b5 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_tx.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_tx.c @@ -681,6 +681,9 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev) tx_desc->ctrl.fence_size = (real_size / 16) & 0x3f; tx_desc->ctrl.srcrb_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE | MLX4_WQE_CTRL_SOLICITED); + if (dev->features & NETIF_F_LOOPBACK) + tx_desc->ctrl.srcrb_flags |= + cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK); if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { tx_desc->ctrl.srcrb_flags |= cpu_to_be32(MLX4_WQE_CTRL_IP_CSUM | MLX4_WQE_CTRL_TCP_UDP_CSUM); diff --git a/include/linux/mlx4/qp.h b/include/linux/mlx4/qp.h index 6562ff6..bee8fa2 100644 --- a/include/linux/mlx4/qp.h +++ b/include/linux/mlx4/qp.h @@ -210,6 +210,7 @@ struct mlx4_wqe_ctrl_seg { * [4] IP checksum * [3:2] C (generate completion queue entry) * [1] SE (solicited event) + * [0] FL (force loopback) */ __be32 srcrb_flags; /* -- 1.7.7