From: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
To: <davem@davemloft.net>
Cc: <netdev@vger.kernel.org>, <yevgenyp@mellanox.co.il>,
<ogerlitz@mellanox.com>, <oren@mellanox.co.il>,
<amirv@mellanox.co.il>
Subject: [PATCH 7/8] net/mlx4_en: adding loopback support
Date: Mon, 21 Nov 2011 10:43:54 +0200 [thread overview]
Message-ID: <4ECA0F4A.30308@mellanox.co.il> (raw)
From: Amir Vadai <amirv@mellanox.co.il>
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 <amirv@mellanox.co.il>
---
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
next reply other threads:[~2011-11-21 11:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-21 8:43 Yevgeny Petrilin [this message]
2011-11-23 1:34 ` [PATCH 7/8] net/mlx4_en: adding loopback support Mahesh Bandewar
2011-11-23 7:27 ` Amir Vadai
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