1/*-
2 * Copyright (c) 2010 Isilon Systems, Inc.
3 * Copyright (c) 2010 iX Systems, Inc.
4 * Copyright (c) 2010 Panasas, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice unmodified, this list of conditions, and the following
12 *    disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28#ifndef	_LINUX_NETDEVICE_H_
29#define	_LINUX_NETDEVICE_H_
30
31#include <linux/types.h>
32
33#include <sys/socket.h>
34
35#include <net/if_types.h>
36#include <net/if.h>
37#include <net/if_var.h>
38#include <net/if_dl.h>
39
40#include <linux/completion.h>
41#include <linux/device.h>
42#include <linux/ethtool.h>
43#include <linux/workqueue.h>
44#include <linux/net.h>
45#include <linux/notifier.h>
46
47struct net {
48};
49
50extern struct net init_net;
51
52#define	MAX_ADDR_LEN		20
53
54#define	net_device	ifnet
55
56#define	dev_get_by_index(n, idx)	ifnet_byindex_ref((idx))
57#define	dev_hold(d)	if_ref((d))
58#define	dev_put(d)	if_rele((d))
59
60#define	netif_running(dev)	!!((dev)->if_drv_flags & IFF_DRV_RUNNING)
61#define	netif_oper_up(dev)	!!((dev)->if_flags & IFF_UP)
62#define	netif_carrier_ok(dev)	netif_running(dev)
63
64static inline void *
65netdev_priv(const struct net_device *dev)
66{
67	return (dev->if_softc);
68}
69
70static inline void
71_handle_ifnet_link_event(void *arg, struct ifnet *ifp, int linkstate)
72{
73	struct notifier_block *nb;
74
75	nb = arg;
76	if (linkstate == LINK_STATE_UP)
77		nb->notifier_call(nb, NETDEV_UP, ifp);
78	else
79		nb->notifier_call(nb, NETDEV_DOWN, ifp);
80}
81
82static inline void
83_handle_ifnet_arrival_event(void *arg, struct ifnet *ifp)
84{
85	struct notifier_block *nb;
86
87	nb = arg;
88	nb->notifier_call(nb, NETDEV_REGISTER, ifp);
89}
90
91static inline void
92_handle_ifnet_departure_event(void *arg, struct ifnet *ifp)
93{
94	struct notifier_block *nb;
95
96	nb = arg;
97	nb->notifier_call(nb, NETDEV_UNREGISTER, ifp);
98}
99
100static inline int
101register_netdevice_notifier(struct notifier_block *nb)
102{
103
104	nb->tags[NETDEV_UP] = EVENTHANDLER_REGISTER(
105	    ifnet_link_event, _handle_ifnet_link_event, nb, 0);
106	nb->tags[NETDEV_REGISTER] = EVENTHANDLER_REGISTER(
107	    ifnet_arrival_event, _handle_ifnet_arrival_event, nb, 0);
108	nb->tags[NETDEV_UNREGISTER] = EVENTHANDLER_REGISTER(
109	    ifnet_departure_event, _handle_ifnet_departure_event, nb, 0);
110	return (0);
111}
112
113static inline int
114unregister_netdevice_notifier(struct notifier_block *nb)
115{
116
117        EVENTHANDLER_DEREGISTER(ifnet_link_event, nb->tags[NETDEV_UP]);
118        EVENTHANDLER_DEREGISTER(ifnet_arrival_event, nb->tags[NETDEV_REGISTER]);
119        EVENTHANDLER_DEREGISTER(ifnet_departure_event,
120	    nb->tags[NETDEV_UNREGISTER]);
121	return (0);
122}
123
124#define	rtnl_lock()
125#define	rtnl_unlock()
126
127static inline int
128dev_mc_delete(struct net_device *dev, void *addr, int alen, int all)
129{
130	struct sockaddr_dl sdl;
131
132	if (alen > sizeof(sdl.sdl_data))
133		return (-EINVAL);
134	memset(&sdl, 0, sizeof(sdl));
135	sdl.sdl_len = sizeof(sdl);
136	sdl.sdl_family = AF_LINK;
137	sdl.sdl_alen = alen;
138	memcpy(&sdl.sdl_data, addr, alen);
139
140	return -if_delmulti(dev, (struct sockaddr *)&sdl);
141}
142
143static inline int
144dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly)
145{
146	struct sockaddr_dl sdl;
147
148	if (alen > sizeof(sdl.sdl_data))
149		return (-EINVAL);
150	memset(&sdl, 0, sizeof(sdl));
151	sdl.sdl_len = sizeof(sdl);
152	sdl.sdl_family = AF_LINK;
153	sdl.sdl_alen = alen;
154	memcpy(&sdl.sdl_data, addr, alen);
155
156	return -if_addmulti(dev, (struct sockaddr *)&sdl, NULL);
157}
158
159#endif	/* _LINUX_NETDEVICE_H_ */
160