netdev - [PATCH for-next 3/6] IB/hns: Fix the bug of setting port mtu

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Message-ID: <20161129231030.1105600-4-salil.mehta@huawei.com>
Date:   Tue, 29 Nov 2016 23:10:27 +0000
From:   Salil Mehta <salil.mehta@...wei.com>
To:     <dledford@...hat.com>
CC:     <salil.mehta@...wei.com>, <xavier.huwei@...wei.com>,
        <oulijun@...wei.com>, <xushaobo2@...wei.com>,
        <mehta.salil.lnk@...il.com>, <lijun_nudt@....com>,
        <linux-rdma@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linuxarm@...wei.com>
Subject: [PATCH for-next 3/6] IB/hns: Fix the bug of setting port mtu

From: "Wei Hu (Xavier)" <xavier.huwei@...wei.com>

In hns_roce driver, we need not call iboe_get_mtu to reduce
IB headers from effective IBoE MTU because hr_dev->caps.max_mtu
has already been reduced.

Signed-off-by: Wei Hu (Xavier) <xavier.huwei@...wei.com>
Signed-off-by: Salil Mehta <salil.mehta@...wei.com>
---
 drivers/infiniband/hw/hns/hns_roce_main.c |   16 ++--------------
 1 file changed, 2 insertions(+), 14 deletions(-)

diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c
index 0cedec0..5e620f9 100644
--- a/drivers/infiniband/hw/hns/hns_roce_main.c
+++ b/drivers/infiniband/hw/hns/hns_roce_main.c
@@ -72,18 +72,6 @@ static void hns_roce_set_mac(struct hns_roce_dev *hr_dev, u8 port, u8 *addr)
 	hr_dev->hw->set_mac(hr_dev, phy_port, addr);
 }
 
-static void hns_roce_set_mtu(struct hns_roce_dev *hr_dev, u8 port, int mtu)
-{
-	u8 phy_port = hr_dev->iboe.phy_port[port];
-	enum ib_mtu tmp;
-
-	tmp = iboe_get_mtu(mtu);
-	if (!tmp)
-		tmp = IB_MTU_256;
-
-	hr_dev->hw->set_mtu(hr_dev, phy_port, tmp);
-}
-
 static int hns_roce_add_gid(struct ib_device *device, u8 port_num,
 			    unsigned int index, const union ib_gid *gid,
 			    const struct ib_gid_attr *attr, void **context)
@@ -188,8 +176,8 @@ static int hns_roce_setup_mtu_mac(struct hns_roce_dev *hr_dev)
 	u8 i;
 
 	for (i = 0; i < hr_dev->caps.num_ports; i++) {
-		hns_roce_set_mtu(hr_dev, i,
-				 ib_mtu_enum_to_int(hr_dev->caps.max_mtu));
+		hr_dev->hw->set_mtu(hr_dev, hr_dev->iboe.phy_port[i],
+				    hr_dev->caps.max_mtu);
 		hns_roce_set_mac(hr_dev, i, hr_dev->iboe.netdevs[i]->dev_addr);
 	}
 
-- 
1.7.9.5