netdevice.h revision 273246 
1/*-
2 * Copyright (c) 2010 Isilon Systems, Inc.
3 * Copyright (c) 2010 iX Systems, Inc.
4 * Copyright (c) 2010 Panasas, Inc.
5 * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice unmodified, this list of conditions, and the following
13 *    disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29#ifndef	_LINUX_NETDEVICE_H_
30#define	_LINUX_NETDEVICE_H_
31
32#include <linux/types.h>
33
34#include <sys/socket.h>
35
36#include <net/if_types.h>
37#include <net/if.h>
38#include <net/if_var.h>
39#include <net/if_dl.h>
40
41#include <linux/completion.h>
42#include <linux/device.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 void
101_handle_iflladdr_event(void *arg, struct ifnet *ifp)
102{
103	struct notifier_block *nb;
104
105	nb = arg;
106	nb->notifier_call(nb, NETDEV_CHANGEADDR, ifp);
107}
108
109static inline void
110_handle_ifaddr_event(void *arg, struct ifnet *ifp)
111{
112	struct notifier_block *nb;
113
114	nb = arg;
115	nb->notifier_call(nb, NETDEV_CHANGEIFADDR, ifp);
116}
117
118static inline int
119register_netdevice_notifier(struct notifier_block *nb)
120{
121
122	nb->tags[NETDEV_UP] = EVENTHANDLER_REGISTER(
123	    ifnet_link_event, _handle_ifnet_link_event, nb, 0);
124	nb->tags[NETDEV_REGISTER] = EVENTHANDLER_REGISTER(
125	    ifnet_arrival_event, _handle_ifnet_arrival_event, nb, 0);
126	nb->tags[NETDEV_UNREGISTER] = EVENTHANDLER_REGISTER(
127	    ifnet_departure_event, _handle_ifnet_departure_event, nb, 0);
128	nb->tags[NETDEV_CHANGEADDR] = EVENTHANDLER_REGISTER(
129	    iflladdr_event, _handle_iflladdr_event, nb, 0);
130
131	return (0);
132}
133
134static inline int
135register_inetaddr_notifier(struct notifier_block *nb)
136{
137
138        nb->tags[NETDEV_CHANGEIFADDR] = EVENTHANDLER_REGISTER(
139            ifaddr_event, _handle_ifaddr_event, nb, 0);
140        return (0);
141}
142
143static inline int
144unregister_netdevice_notifier(struct notifier_block *nb)
145{
146
147        EVENTHANDLER_DEREGISTER(ifnet_link_event, nb->tags[NETDEV_UP]);
148        EVENTHANDLER_DEREGISTER(ifnet_arrival_event, nb->tags[NETDEV_REGISTER]);
149        EVENTHANDLER_DEREGISTER(ifnet_departure_event,
150	    nb->tags[NETDEV_UNREGISTER]);
151        EVENTHANDLER_DEREGISTER(iflladdr_event,
152            nb->tags[NETDEV_CHANGEADDR]);
153
154	return (0);
155}
156
157static inline int
158unregister_inetaddr_notifier(struct notifier_block *nb)
159{
160
161        EVENTHANDLER_DEREGISTER(ifaddr_event,
162            nb->tags[NETDEV_CHANGEIFADDR]);
163
164        return (0);
165}
166
167
168#define	rtnl_lock()
169#define	rtnl_unlock()
170
171static inline int
172dev_mc_delete(struct net_device *dev, void *addr, int alen, int all)
173{
174	struct sockaddr_dl sdl;
175
176	if (alen > sizeof(sdl.sdl_data))
177		return (-EINVAL);
178	memset(&sdl, 0, sizeof(sdl));
179	sdl.sdl_len = sizeof(sdl);
180	sdl.sdl_family = AF_LINK;
181	sdl.sdl_alen = alen;
182	memcpy(&sdl.sdl_data, addr, alen);
183
184	return -if_delmulti(dev, (struct sockaddr *)&sdl);
185}
186
187static inline int
188dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly)
189{
190	struct sockaddr_dl sdl;
191
192	if (alen > sizeof(sdl.sdl_data))
193		return (-EINVAL);
194	memset(&sdl, 0, sizeof(sdl));
195	sdl.sdl_len = sizeof(sdl);
196	sdl.sdl_family = AF_LINK;
197	sdl.sdl_alen = alen;
198	memcpy(&sdl.sdl_data, addr, alen);
199
200	return -if_addmulti(dev, (struct sockaddr *)&sdl, NULL);
201}
202
203#endif	/* _LINUX_NETDEVICE_H_ */
204