diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2025-02-20 18:51:40 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-02-24 14:15:42 -0800 |
| commit | db10fde5c4f96231e1d2bbfd01feb5f2f59b96d1 (patch) | |
| tree | 705b4dc2a417e4ec180d1e95c54fcfe9fdb78faa /net/ethtool/rings.c | |
| parent | f15176b8b6e72ac30e14fd273282d2b72562d26b (diff) | |
net: ethtool: fix ioctl confusing drivers about desired HDS user config
The legacy ioctl path does not have support for extended attributes.
So we issue a GET to fetch the current settings from the driver,
in an attempt to keep them unchanged. HDS is a bit "special" as
the GET only returns on/off while the SET takes a "ternary" argument
(on/off/default). If the driver was in the "default" setting -
executing the ioctl path binds it to on or off, even tho the user
did not intend to change HDS config.
Factor the relevant logic out of the netlink code and reuse it.
Fixes: 87c8f8496a05 ("bnxt_en: add support for tcp-data-split ethtool command")
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Tested-by: Daniel Xu <dxu@dxuuu.xyz>
Tested-by: Taehee Yoo <ap420073@gmail.com>
Link: https://patch.msgid.link/20250221025141.1132944-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/ethtool/rings.c')
| -rw-r--r-- | net/ethtool/rings.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/net/ethtool/rings.c b/net/ethtool/rings.c index 7839bfd1ac6a..aeedd5ec6b8c 100644 --- a/net/ethtool/rings.c +++ b/net/ethtool/rings.c @@ -215,17 +215,16 @@ ethnl_set_rings_validate(struct ethnl_req_info *req_info, static int ethnl_set_rings(struct ethnl_req_info *req_info, struct genl_info *info) { - struct kernel_ethtool_ringparam kernel_ringparam = {}; - struct ethtool_ringparam ringparam = {}; + struct kernel_ethtool_ringparam kernel_ringparam; struct net_device *dev = req_info->dev; + struct ethtool_ringparam ringparam; struct nlattr **tb = info->attrs; const struct nlattr *err_attr; bool mod = false; int ret; - dev->ethtool_ops->get_ringparam(dev, &ringparam, - &kernel_ringparam, info->extack); - kernel_ringparam.tcp_data_split = dev->cfg->hds_config; + ethtool_ringparam_get_cfg(dev, &ringparam, &kernel_ringparam, + info->extack); ethnl_update_u32(&ringparam.rx_pending, tb[ETHTOOL_A_RINGS_RX], &mod); ethnl_update_u32(&ringparam.rx_mini_pending, |