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From:   Peng Li <lipeng321@huawei.com>
To:     <davem@davemloft.net>
CC:     <netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <linuxarm@huawei.com>, <yisen.zhuang@huawei.com>,
        <salil.mehta@huawei.com>, <lipeng321@huawei.com>
Subject: [PATCH V2 net 0/2] net: hns: fix some bugs about speed and duplex change
Date:   Mon, 27 Aug 2018 09:59:28 +0800
Message-ID: <1535335170-111030-1-git-send-email-lipeng321@huawei.com>
MIME-Version: 1.0
Content-Type: text/plain
Sender: linux-kernel-owner@vger.kernel.org
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If there are packets in hardware when changing the spped
or duplex, it may cause hardware hang up.

This patchset adds the code for waiting chip to clean the all
pkts(TX & RX) in chip when the driver uses the function named
"adjust link".

This patchset cleans the pkts as follows:
1) close rx of chip, close tx of protocol stack.
2) wait rcb, ppe, mac to clean.
3) adjust link
4) open rx of chip, open tx of protocol stack.

---
Change log:
V1 -> V2:
1, remove a patch according to the comment reported by Andrew Lunn.
---
Peng Li (2):
  net: hns: add the code for cleaning pkt in chip
  net: hns: add netif_carrier_off before change speed and duplex

 drivers/net/ethernet/hisilicon/hns/hnae.h          |  2 +
 drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c  | 67 +++++++++++++++++++++-
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c | 36 ++++++++++++
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c  | 44 ++++++++++++++
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h  |  8 +++
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c | 29 ++++++++++
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h |  3 +
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c  | 23 ++++++++
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.h  |  1 +
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c  | 23 ++++++++
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h  |  1 +
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h  |  1 +
 drivers/net/ethernet/hisilicon/hns/hns_enet.c      | 21 ++++++-
 drivers/net/ethernet/hisilicon/hns/hns_ethtool.c   |  2 +
 14 files changed, 257 insertions(+), 4 deletions(-)

-- 
2.9.3