src/drivers/priv_netlink.h

/*
 * wpa_supplicant - Private copy of Linux netlink/rtnetlink definitions.
 * Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi>
 *
 * This software may be distributed under the terms of the BSD license.
 * See README for more details.
 */

#ifndef PRIV_NETLINK_H
#define PRIV_NETLINK_H

/*
 * This should be replaced with user space header once one is available with C
 * library, etc..
 */

#ifndef IFF_LOWER_UP
#define IFF_LOWER_UP   0x10000         /* driver signals L1 up         */
#endif
#ifndef IFF_DORMANT
#define IFF_DORMANT    0x20000         /* driver signals dormant       */
#endif

#ifndef IFLA_IFNAME
#define IFLA_IFNAME 3
#endif
#ifndef IFLA_WIRELESS
#define IFLA_WIRELESS 11
#endif
#ifndef IFLA_OPERSTATE
#define IFLA_OPERSTATE 16
#endif
#ifndef IFLA_LINKMODE
#define IFLA_LINKMODE 17
#define IF_OPER_DORMANT 5
#define IF_OPER_UP 6
#endif

#define NLM_F_REQUEST 1

#define NETLINK_ROUTE 0
#define RTMGRP_LINK 1
#define RTM_BASE 0x10
#define RTM_NEWLINK (RTM_BASE + 0)
#define RTM_DELLINK (RTM_BASE + 1)
#define RTM_SETLINK (RTM_BASE + 3)

#define NLMSG_ALIGNTO 4
#define NLMSG_ALIGN(len) (((len) + NLMSG_ALIGNTO - 1) & ~(NLMSG_ALIGNTO - 1))
#define NLMSG_HDRLEN ((int) NLMSG_ALIGN(sizeof(struct nlmsghdr)))
#define NLMSG_LENGTH(len) ((len) + NLMSG_ALIGN(sizeof(struct nlmsghdr)))
#define NLMSG_SPACE(len) NLMSG_ALIGN(NLMSG_LENGTH(len))
#define NLMSG_DATA(nlh) ((void*) (((char*) nlh) + NLMSG_LENGTH(0)))
#define NLMSG_NEXT(nlh,len) ((len) -= NLMSG_ALIGN((nlh)->nlmsg_len), \
			     (struct nlmsghdr *) \
			     (((char *)(nlh)) + NLMSG_ALIGN((nlh)->nlmsg_len)))
#define NLMSG_OK(nlh,len) ((len) >= (int) sizeof(struct nlmsghdr) && \
			   (nlh)->nlmsg_len >= sizeof(struct nlmsghdr) && \
			   (int) (nlh)->nlmsg_len <= (len))
#define NLMSG_PAYLOAD(nlh,len) ((nlh)->nlmsg_len - NLMSG_SPACE((len)))

#define RTA_ALIGNTO 4
#define RTA_ALIGN(len) (((len) + RTA_ALIGNTO - 1) & ~(RTA_ALIGNTO - 1))
#define RTA_OK(rta,len) \
((len) > 0 && (rta)->rta_len >= sizeof(struct rtattr) && \
(rta)->rta_len <= (len))
#define RTA_NEXT(rta,attrlen) \
((attrlen) -= RTA_ALIGN((rta)->rta_len), \
(struct rtattr *) (((char *)(rta)) + RTA_ALIGN((rta)->rta_len)))
#define RTA_LENGTH(len) (RTA_ALIGN(sizeof(struct rtattr)) + (len))
#define RTA_SPACE(len) RTA_ALIGN(RTA_LENGTH(len))
#define RTA_DATA(rta) ((void *) (((char *) (rta)) + RTA_LENGTH(0)))
#define RTA_PAYLOAD(rta) ((int) ((rta)->rta_len) - RTA_LENGTH(0))


struct sockaddr_nl
{
	sa_family_t nl_family;
	unsigned short nl_pad;
	u32 nl_pid;
	u32 nl_groups;
};

struct nlmsghdr
{
	u32 nlmsg_len;
	u16 nlmsg_type;
	u16 nlmsg_flags;
	u32 nlmsg_seq;
	u32 nlmsg_pid;
};

struct ifinfomsg
{
	unsigned char ifi_family;
	unsigned char __ifi_pad;
	unsigned short ifi_type;
	int ifi_index;
	unsigned ifi_flags;
	unsigned ifi_change;
};

struct rtattr
{
	unsigned short rta_len;
	unsigned short rta_type;
};

#endif /* PRIV_NETLINK_H */