linux/net/ncsi/ncsi-netlink.h
Justin.Lee1@Dell.com 9771b8ccdf net/ncsi: Extend NC-SI Netlink interface to allow user space to send NC-SI command
The new command (NCSI_CMD_SEND_CMD) is added to allow user space application
to send NC-SI command to the network card.
Also, add a new attribute (NCSI_ATTR_DATA) for transferring request and response.

The work flow is as below.

Request:
User space application
	-> Netlink interface (msg)
	-> new Netlink handler - ncsi_send_cmd_nl()
	-> ncsi_xmit_cmd()

Response:
Response received - ncsi_rcv_rsp()
	-> internal response handler - ncsi_rsp_handler_xxx()
	-> ncsi_rsp_handler_netlink()
	-> ncsi_send_netlink_rsp ()
	-> Netlink interface (msg)
	-> user space application

Command timeout - ncsi_request_timeout()
	-> ncsi_send_netlink_timeout ()
	-> Netlink interface (msg with zero data length)
	-> user space application

Error:
Error detected
	-> ncsi_send_netlink_err ()
	-> Netlink interface (err msg)
	-> user space application

Signed-off-by: Justin Lee <justin.lee1@dell.com>
Reviewed-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-15 22:00:59 -07:00

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931 B
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 __NCSI_NETLINK_H__
#define __NCSI_NETLINK_H__
#include <linux/netdevice.h>
#include "internal.h"
int ncsi_send_netlink_rsp(struct ncsi_request *nr,
struct ncsi_package *np,
struct ncsi_channel *nc);
int ncsi_send_netlink_timeout(struct ncsi_request *nr,
struct ncsi_package *np,
struct ncsi_channel *nc);
int ncsi_send_netlink_err(struct net_device *dev,
u32 snd_seq,
u32 snd_portid,
struct nlmsghdr *nlhdr,
int err);
int ncsi_init_netlink(struct net_device *dev);
int ncsi_unregister_netlink(struct net_device *dev);
#endif /* __NCSI_NETLINK_H__ */