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
47 struct net {
48 };
49
50 extern 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
64 static inline void *
netdev_priv(const struct net_device * dev)65 netdev_priv(const struct net_device *dev)
66 {
67 return (dev->if_softc);
68 }
69
70 static inline void
_handle_ifnet_link_event(void * arg,struct ifnet * ifp,int linkstate)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
82 static inline void
_handle_ifnet_arrival_event(void * arg,struct ifnet * ifp)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
91 static inline void
_handle_ifnet_departure_event(void * arg,struct ifnet * ifp)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
100 static inline void
_handle_iflladdr_event(void * arg,struct ifnet * ifp)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
109 static inline void
_handle_ifaddr_event(void * arg,struct ifnet * ifp)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
118 static inline int
register_netdevice_notifier(struct notifier_block * nb)119 register_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
134 static inline int
register_inetaddr_notifier(struct notifier_block * nb)135 register_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
143 static inline int
unregister_netdevice_notifier(struct notifier_block * nb)144 unregister_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
157 static inline int
unregister_inetaddr_notifier(struct notifier_block * nb)158 unregister_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
171 static inline int
dev_mc_delete(struct net_device * dev,void * addr,int alen,int all)172 dev_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
187 static inline int
dev_mc_add(struct net_device * dev,void * addr,int alen,int newonly)188 dev_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