diff options
| author | Michal Kubecek <mkubecek@suse.cz> | 2019-12-27 17:55:33 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-12-28 03:40:01 +0300 |
| commit | 6b08d6c146f4c5ed451c45339c10feb06d619db2 (patch) | |
| tree | 2f099ccbbdc46d00bd8b462279b410afa9d0b5ae /include/linux | |
| parent | 10b518d4e6dd5390e40f7d8de0f08753c1195a7e (diff) | |
| download | linux-6b08d6c146f4c5ed451c45339c10feb06d619db2.tar.xz | |
ethtool: support for netlink notifications
Add infrastructure for ethtool netlink notifications. There is only one
multicast group "monitor" which is used to notify userspace about changes
and actions performed. Notification messages (types using suffix _NTF)
share the format with replies to GET requests.
Notifications are supposed to be broadcasted on every configuration change,
whether it is done using the netlink interface or ioctl one. Netlink SET
requests only trigger a notification if some data is actually changed.
To trigger an ethtool notification, both ethtool netlink and external code
use ethtool_notify() helper. This helper requires RTNL to be held and may
sleep. Handlers sending messages for specific notification message types
are registered in ethnl_notify_handlers array. As notifications can be
triggered from other code, ethnl_ok flag is used to prevent an attempt to
send notification before genetlink family is registered.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/ethtool_netlink.h | 5 | ||||
| -rw-r--r-- | include/linux/netdevice.h | 9 |
2 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/ethtool_netlink.h b/include/linux/ethtool_netlink.h index f27e92b5f344..c98f6852c8eb 100644 --- a/include/linux/ethtool_netlink.h +++ b/include/linux/ethtool_netlink.h @@ -5,5 +5,10 @@ #include <uapi/linux/ethtool_netlink.h> #include <linux/ethtool.h> +#include <linux/netdevice.h> + +enum ethtool_multicast_groups { + ETHNL_MCGRP_MONITOR, +}; #endif /* _LINUX_ETHTOOL_NETLINK_H_ */ diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 469a297b58c0..f007155ae8f4 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -4393,6 +4393,15 @@ struct netdev_notifier_bonding_info { void netdev_bonding_info_change(struct net_device *dev, struct netdev_bonding_info *bonding_info); +#if IS_ENABLED(CONFIG_ETHTOOL_NETLINK) +void ethtool_notify(struct net_device *dev, unsigned int cmd, const void *data); +#else +static inline void ethtool_notify(struct net_device *dev, unsigned int cmd, + const void *data) +{ +} +#endif + static inline struct sk_buff *skb_gso_segment(struct sk_buff *skb, netdev_features_t features) { |