netdev - [RFCv4 PATCH net-next 0/3] net-next: ethool: add support to get/set tx push by ethtool -G/g

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Date:   Thu, 31 Mar 2022 16:43:39 +0800
From:   Jie Wang <wangjie125@...wei.com>
To:     <mkubecek@...e.cz>, <davem@...emloft.net>, <kuba@...nel.org>,
        <wangjie125@...wei.com>
CC:     <netdev@...r.kernel.org>, <huangguangbin2@...wei.com>,
        <lipeng321@...wei.com>, <shenjian15@...wei.com>,
        <moyufeng@...wei.com>, <linyunsheng@...wei.com>,
        <salil.mehta@...wei.com>, <chenhao288@...ilicon.com>
Subject: [RFCv4 PATCH net-next 0/3] net-next: ethool: add support to get/set tx push by ethtool -G/g

These two patches add tx push in ring params and adapt the set and get APIs 
of ring params

The former discussion please see [1].
[1]:https://lore.kernel.org/netdev/20220315032108.57228-1-wangjie125@huawei.com/
[2]:https://lore.kernel.org/netdev/20220326085102.14111-1-wangjie125@huawei.com/
[3]:https://lore.kernel.org/netdev/20220329091913.17869-1-wangjie125@huawei.com/

ChangeLog:

V3->V4
1,Put three request checks before rtnl_lock() in ethnl_set_rings
2,Add tx push feature description in Documentation/networking/ethtool-netlink.rst
3,Use netdev_dbg to track changes in hns3_set_tx_push

V2->V3
1.Add tx push documentation in Documentation/networking/ethtool-netlink.rst
2.Use u8 to store tx push in struct kernel_ethtool_ringparam
3.Add ETHTOOL_RING_USE_TX_PUSH to reject setting for unsupported driver
4.Use NLA_POLICY_MAX(NLA_U8, 1) to limit the tx push value

V1->V2
extend tx push param in ringparam, suggested by Jakub Kicinski.

Jie Wang (3):
  net-next: ethtool: extend ringparam set/get APIs for tx_push
  net-next: ethtool: move checks before rtnl_lock() in ethnl_set_rings
  net-next: hn3: add tx push support in hns3 ring param process

 Documentation/networking/ethtool-netlink.rst  | 10 ++++
 .../ethernet/hisilicon/hns3/hns3_ethtool.c    | 33 ++++++++++-
 include/linux/ethtool.h                       |  3 +
 include/uapi/linux/ethtool_netlink.h          |  1 +
 net/ethtool/netlink.h                         |  2 +-
 net/ethtool/rings.c                           | 56 ++++++++++++-------
 6 files changed, 83 insertions(+), 22 deletions(-)

-- 
2.33.0