Root/
1 | /* |
2 | * IrDA netlink layer, for stack configuration. |
3 | * |
4 | * Copyright (c) 2007 Samuel Ortiz <samuel@sortiz.org> |
5 | * |
6 | * Partly based on the 802.11 nelink implementation |
7 | * (see net/wireless/nl80211.c) which is: |
8 | * Copyright 2006 Johannes Berg <johannes@sipsolutions.net> |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify |
11 | * it under the terms of the GNU General Public License version 2 as |
12 | * published by the Free Software Foundation. |
13 | * |
14 | */ |
15 | |
16 | #include <linux/socket.h> |
17 | #include <linux/irda.h> |
18 | #include <linux/gfp.h> |
19 | #include <net/net_namespace.h> |
20 | #include <net/sock.h> |
21 | #include <net/irda/irda.h> |
22 | #include <net/irda/irlap.h> |
23 | #include <net/genetlink.h> |
24 | |
25 | |
26 | |
27 | static struct genl_family irda_nl_family = { |
28 | .id = GENL_ID_GENERATE, |
29 | .name = IRDA_NL_NAME, |
30 | .hdrsize = 0, |
31 | .version = IRDA_NL_VERSION, |
32 | .maxattr = IRDA_NL_CMD_MAX, |
33 | }; |
34 | |
35 | static struct net_device * ifname_to_netdev(struct net *net, struct genl_info *info) |
36 | { |
37 | char * ifname; |
38 | |
39 | if (!info->attrs[IRDA_NL_ATTR_IFNAME]) |
40 | return NULL; |
41 | |
42 | ifname = nla_data(info->attrs[IRDA_NL_ATTR_IFNAME]); |
43 | |
44 | IRDA_DEBUG(5, "%s(): Looking for %s\n", __func__, ifname); |
45 | |
46 | return dev_get_by_name(net, ifname); |
47 | } |
48 | |
49 | static int irda_nl_set_mode(struct sk_buff *skb, struct genl_info *info) |
50 | { |
51 | struct net_device * dev; |
52 | struct irlap_cb * irlap; |
53 | u32 mode; |
54 | |
55 | if (!info->attrs[IRDA_NL_ATTR_MODE]) |
56 | return -EINVAL; |
57 | |
58 | mode = nla_get_u32(info->attrs[IRDA_NL_ATTR_MODE]); |
59 | |
60 | IRDA_DEBUG(5, "%s(): Switching to mode: %d\n", __func__, mode); |
61 | |
62 | dev = ifname_to_netdev(&init_net, info); |
63 | if (!dev) |
64 | return -ENODEV; |
65 | |
66 | irlap = (struct irlap_cb *)dev->atalk_ptr; |
67 | if (!irlap) { |
68 | dev_put(dev); |
69 | return -ENODEV; |
70 | } |
71 | |
72 | irlap->mode = mode; |
73 | |
74 | dev_put(dev); |
75 | |
76 | return 0; |
77 | } |
78 | |
79 | static int irda_nl_get_mode(struct sk_buff *skb, struct genl_info *info) |
80 | { |
81 | struct net_device * dev; |
82 | struct irlap_cb * irlap; |
83 | struct sk_buff *msg; |
84 | void *hdr; |
85 | int ret = -ENOBUFS; |
86 | |
87 | dev = ifname_to_netdev(&init_net, info); |
88 | if (!dev) |
89 | return -ENODEV; |
90 | |
91 | msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
92 | if (!msg) { |
93 | dev_put(dev); |
94 | return -ENOMEM; |
95 | } |
96 | |
97 | irlap = (struct irlap_cb *)dev->atalk_ptr; |
98 | if (!irlap) { |
99 | ret = -ENODEV; |
100 | goto err_out; |
101 | } |
102 | |
103 | hdr = genlmsg_put(msg, info->snd_pid, info->snd_seq, |
104 | &irda_nl_family, 0, IRDA_NL_CMD_GET_MODE); |
105 | if (hdr == NULL) { |
106 | ret = -EMSGSIZE; |
107 | goto err_out; |
108 | } |
109 | |
110 | if(nla_put_string(msg, IRDA_NL_ATTR_IFNAME, |
111 | dev->name)) |
112 | goto err_out; |
113 | |
114 | if(nla_put_u32(msg, IRDA_NL_ATTR_MODE, irlap->mode)) |
115 | goto err_out; |
116 | |
117 | genlmsg_end(msg, hdr); |
118 | |
119 | return genlmsg_reply(msg, info); |
120 | |
121 | err_out: |
122 | nlmsg_free(msg); |
123 | dev_put(dev); |
124 | |
125 | return ret; |
126 | } |
127 | |
128 | static const struct nla_policy irda_nl_policy[IRDA_NL_ATTR_MAX + 1] = { |
129 | [IRDA_NL_ATTR_IFNAME] = { .type = NLA_NUL_STRING, |
130 | .len = IFNAMSIZ-1 }, |
131 | [IRDA_NL_ATTR_MODE] = { .type = NLA_U32 }, |
132 | }; |
133 | |
134 | static struct genl_ops irda_nl_ops[] = { |
135 | { |
136 | .cmd = IRDA_NL_CMD_SET_MODE, |
137 | .doit = irda_nl_set_mode, |
138 | .policy = irda_nl_policy, |
139 | .flags = GENL_ADMIN_PERM, |
140 | }, |
141 | { |
142 | .cmd = IRDA_NL_CMD_GET_MODE, |
143 | .doit = irda_nl_get_mode, |
144 | .policy = irda_nl_policy, |
145 | /* can be retrieved by unprivileged users */ |
146 | }, |
147 | |
148 | }; |
149 | |
150 | int irda_nl_register(void) |
151 | { |
152 | return genl_register_family_with_ops(&irda_nl_family, |
153 | irda_nl_ops, ARRAY_SIZE(irda_nl_ops)); |
154 | } |
155 | |
156 | void irda_nl_unregister(void) |
157 | { |
158 | genl_unregister_family(&irda_nl_family); |
159 | } |
160 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9