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

[Guangbin Huang]

From: Jie Wang <wangjie125@xxxxxxxxxx>

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

ChangeLog:

RFC V4->V1
1.Add detailed description about the tx push mode
2.Modify the patch subject title
link: https://lore.kernel.org/netdev/20220331084342.27043-1-wangjie125@xxxxxxxxxx/

RFC V3->RFC 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
link: https://lore.kernel.org/netdev/20220329091913.17869-1-wangjie125@xxxxxxxxxx/

RFC V2->RFC 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
link: https://lore.kernel.org/netdev/20220326085102.14111-1-wangjie125@xxxxxxxxxx/

RFC V1->RFC V2
1.Extend tx push param in ringparam, suggested by Jakub Kicinski.
link: https://lore.kernel.org/netdev/20220315032108.57228-1-wangjie125@xxxxxxxxxx/

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

 Documentation/networking/ethtool-netlink.rst  |  8 +++
 .../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, 81 insertions(+), 22 deletions(-)

-- 
2.33.0