netdevice.h revision 271127 
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/ethtool.h>
44#include <linux/workqueue.h>
45#include <linux/net.h>
46#include <linux/notifier.h>
47
48struct net {
49};
50
51extern struct net init_net;
52
53#define	MAX_ADDR_LEN		20
54
55#define	net_device	ifnet
56
57#define	dev_get_by_index(n, idx)	ifnet_byindex_ref((idx))
58#define	dev_hold(d)	if_ref((d))
59#define	dev_put(d)	if_rele((d))
60
61#define	netif_running(dev)	!!((dev)->if_drv_flags & IFF_DRV_RUNNING)
62#define	netif_oper_up(dev)	!!((dev)->if_flags & IFF_UP)
63#define	netif_carrier_ok(dev)	netif_running(dev)
64
65static inline void *
66netdev_priv(const struct net_device *dev)
67{
68	return (dev->if_softc);
69}
70
71static inline void
72_handle_ifnet_link_event(void *arg, struct ifnet *ifp, int linkstate)
73{
74	struct notifier_block *nb;
75
76	nb = arg;
77	if (linkstate == LINK_STATE_UP)
78		nb->notifier_call(nb, NETDEV_UP, ifp);
79	else
80		nb->notifier_call(nb, NETDEV_DOWN, ifp);
81}
82
83static inline void
84_handle_ifnet_arrival_event(void *arg, struct ifnet *ifp)
85{
86	struct notifier_block *nb;
87
88	nb = arg;
89	nb->notifier_call(nb, NETDEV_REGISTER, ifp);
90}
91
92static inline void
93_handle_ifnet_departure_event(void *arg, struct ifnet *ifp)
94{
95	struct notifier_block *nb;
96
97	nb = arg;
98	nb->notifier_call(nb, NETDEV_UNREGISTER, ifp);
99}
100
101static inline void
102_handle_iflladdr_event(void *arg, struct ifnet *ifp)
103{
104	struct notifier_block *nb;
105
106	nb = arg;
107	nb->notifier_call(nb, NETDEV_CHANGEADDR, ifp);
108}
109
110static inline void
111_handle_ifaddr_event(void *arg, struct ifnet *ifp)
112{
113	struct notifier_block *nb;
114
115	nb = arg;
116	nb->notifier_call(nb, NETDEV_CHANGEIFADDR, ifp);
117}
118
119static inline int
120register_netdevice_notifier(struct notifier_block *nb)
121{
122
123	nb->tags[NETDEV_UP] = EVENTHANDLER_REGISTER(
124	    ifnet_link_event, _handle_ifnet_link_event, nb, 0);
125	nb->tags[NETDEV_REGISTER] = EVENTHANDLER_REGISTER(
126	    ifnet_arrival_event, _handle_ifnet_arrival_event, nb, 0);
127	nb->tags[NETDEV_UNREGISTER] = EVENTHANDLER_REGISTER(
128	    ifnet_departure_event, _handle_ifnet_departure_event, nb, 0);
129	nb->tags[NETDEV_CHANGEADDR] = EVENTHANDLER_REGISTER(
130	    iflladdr_event, _handle_iflladdr_event, nb, 0);
131
132	return (0);
133}
134
135static inline int
136register_inetaddr_notifier(struct notifier_block *nb)
137{
138
139        nb->tags[NETDEV_CHANGEIFADDR] = EVENTHANDLER_REGISTER(
140            ifaddr_event, _handle_ifaddr_event, nb, 0);
141        return (0);
142}
143
144static inline int
145unregister_netdevice_notifier(struct notifier_block *nb)
146{
147
148        EVENTHANDLER_DEREGISTER(ifnet_link_event, nb->tags[NETDEV_UP]);
149        EVENTHANDLER_DEREGISTER(ifnet_arrival_event, nb->tags[NETDEV_REGISTER]);
150        EVENTHANDLER_DEREGISTER(ifnet_departure_event,
151	    nb->tags[NETDEV_UNREGISTER]);
152        EVENTHANDLER_DEREGISTER(iflladdr_event,
153            nb->tags[NETDEV_CHANGEADDR]);
154
155	return (0);
156}
157
158static inline int
159unregister_inetaddr_notifier(struct notifier_block *nb)
160{
161
162        EVENTHANDLER_DEREGISTER(ifaddr_event,
163            nb->tags[NETDEV_CHANGEIFADDR]);
164
165        return (0);
166}
167
168
169#define	rtnl_lock()
170#define	rtnl_unlock()
171
172static inline int
173dev_mc_delete(struct net_device *dev, void *addr, int alen, int all)
174{
175	struct sockaddr_dl sdl;
176
177	if (alen > sizeof(sdl.sdl_data))
178		return (-EINVAL);
179	memset(&sdl, 0, sizeof(sdl));
180	sdl.sdl_len = sizeof(sdl);
181	sdl.sdl_family = AF_LINK;
182	sdl.sdl_alen = alen;
183	memcpy(&sdl.sdl_data, addr, alen);
184
185	return -if_delmulti(dev, (struct sockaddr *)&sdl);
186}
187
188static inline int
189dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly)
190{
191	struct sockaddr_dl sdl;
192
193	if (alen > sizeof(sdl.sdl_data))
194		return (-EINVAL);
195	memset(&sdl, 0, sizeof(sdl));
196	sdl.sdl_len = sizeof(sdl);
197	sdl.sdl_family = AF_LINK;
198	sdl.sdl_alen = alen;
199	memcpy(&sdl.sdl_data, addr, alen);
200
201	return -if_addmulti(dev, (struct sockaddr *)&sdl, NULL);
202}
203
204#endif	/* _LINUX_NETDEVICE_H_ */
205