1 /*-
2 * Copyright (c) 2009 Sam Leffler, Errno Consulting
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include <sys/cdefs.h>
27 #ifdef __FreeBSD__
28 __FBSDID("$FreeBSD: releng/11.1/sys/net80211/ieee80211_action.c 300232 2016-05-19 21:08:33Z avos $");
29 #endif
30
31 /*
32 * IEEE 802.11 send/recv action frame support.
33 */
34
35 #include "opt_inet.h"
36 #include "opt_wlan.h"
37
38 #include <sys/param.h>
39 #include <sys/kernel.h>
40 #include <sys/malloc.h>
41 #include <sys/systm.h>
42
43 #include <sys/socket.h>
44
45 #include <net/if.h>
46 #include <net/if_var.h>
47 #include <net/if_media.h>
48 #include <net/ethernet.h>
49
50 #include <net80211/ieee80211_var.h>
51 #include <net80211/ieee80211_action.h>
52 #include <net80211/ieee80211_mesh.h>
53
54 static int
55 send_inval(struct ieee80211_node *ni, int cat, int act, void *sa)
56 {
57 return EINVAL;
58 }
59
60 static ieee80211_send_action_func *ba_send_action[8] = {
61 send_inval, send_inval, send_inval, send_inval,
62 send_inval, send_inval, send_inval, send_inval,
63 };
64 static ieee80211_send_action_func *ht_send_action[8] = {
65 send_inval, send_inval, send_inval, send_inval,
66 send_inval, send_inval, send_inval, send_inval,
67 };
68 static ieee80211_send_action_func *meshpl_send_action[8] = {
69 send_inval, send_inval, send_inval, send_inval,
70 send_inval, send_inval, send_inval, send_inval,
71 };
72 static ieee80211_send_action_func *meshaction_send_action[12] = {
73 send_inval, send_inval, send_inval, send_inval,
74 send_inval, send_inval, send_inval, send_inval,
75 send_inval, send_inval, send_inval, send_inval,
76 };
77 static ieee80211_send_action_func *vendor_send_action[8] = {
78 send_inval, send_inval, send_inval, send_inval,
79 send_inval, send_inval, send_inval, send_inval,
80 };
81
82 int
83 ieee80211_send_action_register(int cat, int act, ieee80211_send_action_func *f)
84 {
85 switch (cat) {
86 case IEEE80211_ACTION_CAT_BA:
87 if (act >= nitems(ba_send_action))
88 break;
89 ba_send_action[act] = f;
90 return 0;
91 case IEEE80211_ACTION_CAT_HT:
92 if (act >= nitems(ht_send_action))
93 break;
94 ht_send_action[act] = f;
95 return 0;
96 case IEEE80211_ACTION_CAT_SELF_PROT:
97 if (act >= nitems(meshpl_send_action))
98 break;
99 meshpl_send_action[act] = f;
100 return 0;
101 case IEEE80211_ACTION_CAT_MESH:
102 if (act >= nitems(meshaction_send_action))
103 break;
104 meshaction_send_action[act] = f;
105 return 0;
106 case IEEE80211_ACTION_CAT_VENDOR:
107 if (act >= nitems(vendor_send_action))
108 break;
109 vendor_send_action[act] = f;
110 return 0;
111 }
112 return EINVAL;
113 }
114
115 void
116 ieee80211_send_action_unregister(int cat, int act)
117 {
118 ieee80211_send_action_register(cat, act, send_inval);
119 }
120
121 int
122 ieee80211_send_action(struct ieee80211_node *ni, int cat, int act, void *sa)
123 {
124 ieee80211_send_action_func *f = send_inval;
125
126 switch (cat) {
127 case IEEE80211_ACTION_CAT_BA:
128 if (act < nitems(ba_send_action))
129 f = ba_send_action[act];
130 break;
131 case IEEE80211_ACTION_CAT_HT:
132 if (act < nitems(ht_send_action))
133 f = ht_send_action[act];
134 break;
135 case IEEE80211_ACTION_CAT_SELF_PROT:
136 if (act < nitems(meshpl_send_action))
137 f = meshpl_send_action[act];
138 break;
139 case IEEE80211_ACTION_CAT_MESH:
140 if (act < nitems(meshaction_send_action))
141 f = meshaction_send_action[act];
142 break;
143 case IEEE80211_ACTION_CAT_VENDOR:
144 if (act < nitems(vendor_send_action))
145 f = vendor_send_action[act];
146 break;
147 }
148 return f(ni, cat, act, sa);
149 }
150
151 static int
152 recv_inval(struct ieee80211_node *ni, const struct ieee80211_frame *wh,
153 const uint8_t *frm, const uint8_t *efrm)
154 {
155 return EINVAL;
156 }
157
158 static ieee80211_recv_action_func *ba_recv_action[8] = {
159 recv_inval, recv_inval, recv_inval, recv_inval,
160 recv_inval, recv_inval, recv_inval, recv_inval,
161 };
162 static ieee80211_recv_action_func *ht_recv_action[8] = {
163 recv_inval, recv_inval, recv_inval, recv_inval,
164 recv_inval, recv_inval, recv_inval, recv_inval,
165 };
166 static ieee80211_recv_action_func *meshpl_recv_action[8] = {
167 recv_inval, recv_inval, recv_inval, recv_inval,
168 recv_inval, recv_inval, recv_inval, recv_inval,
169 };
170 static ieee80211_recv_action_func *meshaction_recv_action[12] = {
171 recv_inval, recv_inval, recv_inval, recv_inval,
172 recv_inval, recv_inval, recv_inval, recv_inval,
173 recv_inval, recv_inval, recv_inval, recv_inval,
174 };
175 static ieee80211_recv_action_func *vendor_recv_action[8] = {
176 recv_inval, recv_inval, recv_inval, recv_inval,
177 recv_inval, recv_inval, recv_inval, recv_inval,
178 };
179
180 int
181 ieee80211_recv_action_register(int cat, int act, ieee80211_recv_action_func *f)
182 {
183 switch (cat) {
184 case IEEE80211_ACTION_CAT_BA:
185 if (act >= nitems(ba_recv_action))
186 break;
187 ba_recv_action[act] = f;
188 return 0;
189 case IEEE80211_ACTION_CAT_HT:
190 if (act >= nitems(ht_recv_action))
191 break;
192 ht_recv_action[act] = f;
193 return 0;
194 case IEEE80211_ACTION_CAT_SELF_PROT:
195 if (act >= nitems(meshpl_recv_action))
196 break;
197 meshpl_recv_action[act] = f;
198 return 0;
199 case IEEE80211_ACTION_CAT_MESH:
200 if (act >= nitems(meshaction_recv_action))
201 break;
202 meshaction_recv_action[act] = f;
203 return 0;
204 case IEEE80211_ACTION_CAT_VENDOR:
205 if (act >= nitems(vendor_recv_action))
206 break;
207 vendor_recv_action[act] = f;
208 return 0;
209 }
210 return EINVAL;
211 }
212
213 void
214 ieee80211_recv_action_unregister(int cat, int act)
215 {
216 ieee80211_recv_action_register(cat, act, recv_inval);
217 }
218
219 int
220 ieee80211_recv_action(struct ieee80211_node *ni,
221 const struct ieee80211_frame *wh,
222 const uint8_t *frm, const uint8_t *efrm)
223 {
224 ieee80211_recv_action_func *f = recv_inval;
225 struct ieee80211vap *vap = ni->ni_vap;
226 const struct ieee80211_action *ia =
227 (const struct ieee80211_action *) frm;
228
229 switch (ia->ia_category) {
230 case IEEE80211_ACTION_CAT_BA:
231 if (ia->ia_action < nitems(ba_recv_action))
232 f = ba_recv_action[ia->ia_action];
233 break;
234 case IEEE80211_ACTION_CAT_HT:
235 if (ia->ia_action < nitems(ht_recv_action))
236 f = ht_recv_action[ia->ia_action];
237 break;
238 case IEEE80211_ACTION_CAT_SELF_PROT:
239 if (ia->ia_action < nitems(meshpl_recv_action))
240 f = meshpl_recv_action[ia->ia_action];
241 break;
242 case IEEE80211_ACTION_CAT_MESH:
243 if (ni == vap->iv_bss ||
244 ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) {
245 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_MESH,
246 ni->ni_macaddr, NULL,
247 "peer link not yet established (%d), cat %s act %u",
248 ni->ni_mlstate, "mesh action", ia->ia_action);
249 vap->iv_stats.is_mesh_nolink++;
250 break;
251 }
252 if (ia->ia_action < nitems(meshaction_recv_action))
253 f = meshaction_recv_action[ia->ia_action];
254 break;
255 case IEEE80211_ACTION_CAT_VENDOR:
256 if (ia->ia_action < nitems(vendor_recv_action))
257 f = vendor_recv_action[ia->ia_action];
258 break;
259 }
260 return f(ni, wh, frm, efrm);
261 }
Cache object: 6b98f7e0b708158f04d0d28fb54a32df
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