linux-stable/include/uapi/linux/ncsi.h
Samuel Mendoza-Jonas 8d951a75d0 net/ncsi: Configure multi-package, multi-channel modes with failover
This patch extends the ncsi-netlink interface with two new commands and
three new attributes to configure multiple packages and/or channels at
once, and configure specific failover modes.

NCSI_CMD_SET_PACKAGE mask and NCSI_CMD_SET_CHANNEL_MASK set a whitelist
of packages or channels allowed to be configured with the
NCSI_ATTR_PACKAGE_MASK and NCSI_ATTR_CHANNEL_MASK attributes
respectively. If one of these whitelists is set only packages or
channels matching the whitelist are considered for the channel queue in
ncsi_choose_active_channel().

These commands may also use the NCSI_ATTR_MULTI_FLAG to signal that
multiple packages or channels may be configured simultaneously. NCSI
hardware arbitration (HWA) must be available in order to enable
multi-package mode. Multi-channel mode is always available.

If the NCSI_ATTR_CHANNEL_ID attribute is present in the
NCSI_CMD_SET_CHANNEL_MASK command the it sets the preferred channel as
with the NCSI_CMD_SET_INTERFACE command. The combination of preferred
channel and channel whitelist defines a primary channel and the allowed
failover channels.
If the NCSI_ATTR_MULTI_FLAG attribute is also present then the preferred
channel is configured for Tx/Rx and the other channels are enabled only
for Rx.

Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-17 21:09:49 -08:00

136 lines
4.7 KiB
C

/*
* Copyright Samuel Mendoza-Jonas, IBM Corporation 2018.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __UAPI_NCSI_NETLINK_H__
#define __UAPI_NCSI_NETLINK_H__
/**
* enum ncsi_nl_commands - supported NCSI commands
*
* @NCSI_CMD_UNSPEC: unspecified command to catch errors
* @NCSI_CMD_PKG_INFO: list package and channel attributes. Requires
* NCSI_ATTR_IFINDEX. If NCSI_ATTR_PACKAGE_ID is specified returns the
* specific package and its channels - otherwise a dump request returns
* all packages and their associated channels.
* @NCSI_CMD_SET_INTERFACE: set preferred package and channel combination.
* Requires NCSI_ATTR_IFINDEX and the preferred NCSI_ATTR_PACKAGE_ID and
* optionally the preferred NCSI_ATTR_CHANNEL_ID.
* @NCSI_CMD_CLEAR_INTERFACE: clear any preferred package/channel combination.
* Requires NCSI_ATTR_IFINDEX.
* @NCSI_CMD_SEND_CMD: send NC-SI command to network card.
* Requires NCSI_ATTR_IFINDEX, NCSI_ATTR_PACKAGE_ID
* and NCSI_ATTR_CHANNEL_ID.
* @NCSI_CMD_SET_PACKAGE_MASK: set a whitelist of allowed packages.
* Requires NCSI_ATTR_IFINDEX and NCSI_ATTR_PACKAGE_MASK.
* @NCSI_CMD_SET_CHANNEL_MASK: set a whitelist of allowed channels.
* Requires NCSI_ATTR_IFINDEX, NCSI_ATTR_PACKAGE_ID, and
* NCSI_ATTR_CHANNEL_MASK. If NCSI_ATTR_CHANNEL_ID is present it sets
* the primary channel.
* @NCSI_CMD_MAX: highest command number
*/
enum ncsi_nl_commands {
NCSI_CMD_UNSPEC,
NCSI_CMD_PKG_INFO,
NCSI_CMD_SET_INTERFACE,
NCSI_CMD_CLEAR_INTERFACE,
NCSI_CMD_SEND_CMD,
NCSI_CMD_SET_PACKAGE_MASK,
NCSI_CMD_SET_CHANNEL_MASK,
__NCSI_CMD_AFTER_LAST,
NCSI_CMD_MAX = __NCSI_CMD_AFTER_LAST - 1
};
/**
* enum ncsi_nl_attrs - General NCSI netlink attributes
*
* @NCSI_ATTR_UNSPEC: unspecified attributes to catch errors
* @NCSI_ATTR_IFINDEX: ifindex of network device using NCSI
* @NCSI_ATTR_PACKAGE_LIST: nested array of NCSI_PKG_ATTR attributes
* @NCSI_ATTR_PACKAGE_ID: package ID
* @NCSI_ATTR_CHANNEL_ID: channel ID
* @NCSI_ATTR_DATA: command payload
* @NCSI_ATTR_MULTI_FLAG: flag to signal that multi-mode should be enabled with
* NCSI_CMD_SET_PACKAGE_MASK or NCSI_CMD_SET_CHANNEL_MASK.
* @NCSI_ATTR_PACKAGE_MASK: 32-bit mask of allowed packages.
* @NCSI_ATTR_CHANNEL_MASK: 32-bit mask of allowed channels.
* @NCSI_ATTR_MAX: highest attribute number
*/
enum ncsi_nl_attrs {
NCSI_ATTR_UNSPEC,
NCSI_ATTR_IFINDEX,
NCSI_ATTR_PACKAGE_LIST,
NCSI_ATTR_PACKAGE_ID,
NCSI_ATTR_CHANNEL_ID,
NCSI_ATTR_DATA,
NCSI_ATTR_MULTI_FLAG,
NCSI_ATTR_PACKAGE_MASK,
NCSI_ATTR_CHANNEL_MASK,
__NCSI_ATTR_AFTER_LAST,
NCSI_ATTR_MAX = __NCSI_ATTR_AFTER_LAST - 1
};
/**
* enum ncsi_nl_pkg_attrs - NCSI netlink package-specific attributes
*
* @NCSI_PKG_ATTR_UNSPEC: unspecified attributes to catch errors
* @NCSI_PKG_ATTR: nested array of package attributes
* @NCSI_PKG_ATTR_ID: package ID
* @NCSI_PKG_ATTR_FORCED: flag signifying a package has been set as preferred
* @NCSI_PKG_ATTR_CHANNEL_LIST: nested array of NCSI_CHANNEL_ATTR attributes
* @NCSI_PKG_ATTR_MAX: highest attribute number
*/
enum ncsi_nl_pkg_attrs {
NCSI_PKG_ATTR_UNSPEC,
NCSI_PKG_ATTR,
NCSI_PKG_ATTR_ID,
NCSI_PKG_ATTR_FORCED,
NCSI_PKG_ATTR_CHANNEL_LIST,
__NCSI_PKG_ATTR_AFTER_LAST,
NCSI_PKG_ATTR_MAX = __NCSI_PKG_ATTR_AFTER_LAST - 1
};
/**
* enum ncsi_nl_channel_attrs - NCSI netlink channel-specific attributes
*
* @NCSI_CHANNEL_ATTR_UNSPEC: unspecified attributes to catch errors
* @NCSI_CHANNEL_ATTR: nested array of channel attributes
* @NCSI_CHANNEL_ATTR_ID: channel ID
* @NCSI_CHANNEL_ATTR_VERSION_MAJOR: channel major version number
* @NCSI_CHANNEL_ATTR_VERSION_MINOR: channel minor version number
* @NCSI_CHANNEL_ATTR_VERSION_STR: channel version string
* @NCSI_CHANNEL_ATTR_LINK_STATE: channel link state flags
* @NCSI_CHANNEL_ATTR_ACTIVE: channels with this flag are in
* NCSI_CHANNEL_ACTIVE state
* @NCSI_CHANNEL_ATTR_FORCED: flag signifying a channel has been set as
* preferred
* @NCSI_CHANNEL_ATTR_VLAN_LIST: nested array of NCSI_CHANNEL_ATTR_VLAN_IDs
* @NCSI_CHANNEL_ATTR_VLAN_ID: VLAN ID being filtered on this channel
* @NCSI_CHANNEL_ATTR_MAX: highest attribute number
*/
enum ncsi_nl_channel_attrs {
NCSI_CHANNEL_ATTR_UNSPEC,
NCSI_CHANNEL_ATTR,
NCSI_CHANNEL_ATTR_ID,
NCSI_CHANNEL_ATTR_VERSION_MAJOR,
NCSI_CHANNEL_ATTR_VERSION_MINOR,
NCSI_CHANNEL_ATTR_VERSION_STR,
NCSI_CHANNEL_ATTR_LINK_STATE,
NCSI_CHANNEL_ATTR_ACTIVE,
NCSI_CHANNEL_ATTR_FORCED,
NCSI_CHANNEL_ATTR_VLAN_LIST,
NCSI_CHANNEL_ATTR_VLAN_ID,
__NCSI_CHANNEL_ATTR_AFTER_LAST,
NCSI_CHANNEL_ATTR_MAX = __NCSI_CHANNEL_ATTR_AFTER_LAST - 1
};
#endif /* __UAPI_NCSI_NETLINK_H__ */