diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2025-01-18 18:05:13 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-01-20 11:44:57 -0800 |
| commit | 32ad1f7a050d0c17e1e52e1dfdd9f6221ae20ef9 (patch) | |
| tree | 738323fe82583fe4dbd5dafe1f05aefdfc61de7a /net/ethtool/netlink.c | |
| parent | 743dea746ed6d581877c114ef1f362bc277fed6a (diff) | |
net: provide pending ring configuration in net_device
Record the pending configuration in net_device struct.
ethtool core duplicates the current config and the specific
handlers (for now just ringparam) can modify it.
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20250119020518.1962249-4-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/ethtool/netlink.c')
| -rw-r--r-- | net/ethtool/netlink.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/net/ethtool/netlink.c b/net/ethtool/netlink.c index c17d8513d4c1..1d2f62ef6130 100644 --- a/net/ethtool/netlink.c +++ b/net/ethtool/netlink.c @@ -1,5 +1,6 @@ // SPDX-License-Identifier: GPL-2.0-only +#include <net/netdev_queues.h> #include <net/sock.h> #include <linux/ethtool_netlink.h> #include <linux/phy_link_topology.h> @@ -692,19 +693,33 @@ static int ethnl_default_set_doit(struct sk_buff *skb, struct genl_info *info) dev = req_info.dev; rtnl_lock(); + dev->cfg_pending = kmemdup(dev->cfg, sizeof(*dev->cfg), + GFP_KERNEL_ACCOUNT); + if (!dev->cfg_pending) { + ret = -ENOMEM; + goto out_tie_cfg; + } + ret = ethnl_ops_begin(dev); if (ret < 0) - goto out_rtnl; + goto out_free_cfg; ret = ops->set(&req_info, info); - if (ret <= 0) + if (ret < 0) + goto out_ops; + + swap(dev->cfg, dev->cfg_pending); + if (!ret) goto out_ops; ethtool_notify(dev, ops->set_ntf_cmd, NULL); ret = 0; out_ops: ethnl_ops_complete(dev); -out_rtnl: +out_free_cfg: + kfree(dev->cfg_pending); +out_tie_cfg: + dev->cfg_pending = dev->cfg; rtnl_unlock(); out_dev: ethnl_parse_header_dev_put(&req_info); |