1 /*-
2 * Copyright (c) 2010 Bernhard Schmidt <bschmidt@FreeBSD.org>
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 __FBSDID("$FreeBSD$");
28
29 #include "opt_wlan.h"
30
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/kernel.h>
34 #include <sys/malloc.h>
35 #include <sys/module.h>
36 #include <sys/socket.h>
37 #include <sys/sysctl.h>
38
39 #include <net/if.h>
40 #include <net/if_var.h>
41 #include <net/if_media.h>
42 #include <net/ethernet.h>
43
44 #include <netproto/802_11/ieee80211_var.h>
45 #include <netproto/802_11/ieee80211_ratectl.h>
46
47 static void
none_init(struct ieee80211vap * vap)48 none_init(struct ieee80211vap *vap)
49 {
50 }
51
52 static void
none_deinit(struct ieee80211vap * vap)53 none_deinit(struct ieee80211vap *vap)
54 {
55 IEEE80211_FREE(vap->iv_rs, M_80211_RATECTL);
56 }
57
58 static void
none_node_init(struct ieee80211_node * ni)59 none_node_init(struct ieee80211_node *ni)
60 {
61 ni->ni_txrate = ni->ni_rates.rs_rates[0] & IEEE80211_RATE_VAL;
62 }
63
64 static void
none_node_deinit(struct ieee80211_node * ni)65 none_node_deinit(struct ieee80211_node *ni)
66 {
67 }
68
69 static int
none_rate(struct ieee80211_node * ni,void * arg __unused,uint32_t iarg __unused)70 none_rate(struct ieee80211_node *ni, void *arg __unused, uint32_t iarg __unused)
71 {
72 int rix = 0;
73
74 ni->ni_txrate = ni->ni_rates.rs_rates[rix] & IEEE80211_RATE_VAL;
75 return rix;
76 }
77
78 static void
none_tx_complete(const struct ieee80211vap * vap,const struct ieee80211_node * ni,int ok,void * arg1,void * arg2 __unused)79 none_tx_complete(const struct ieee80211vap *vap,
80 const struct ieee80211_node *ni, int ok,
81 void *arg1, void *arg2 __unused)
82 {
83 }
84
85 static void
none_tx_update(const struct ieee80211vap * vap,const struct ieee80211_node * ni,void * arg1,void * arg2,void * arg3)86 none_tx_update(const struct ieee80211vap *vap, const struct ieee80211_node *ni,
87 void *arg1, void *arg2, void *arg3)
88 {
89 }
90
91 static void
none_setinterval(const struct ieee80211vap * vap,int msecs)92 none_setinterval(const struct ieee80211vap *vap, int msecs)
93 {
94 }
95
96 /* number of references from net80211 layer */
97 static int nrefs = 0;
98
99 static const struct ieee80211_ratectl none = {
100 .ir_name = "none",
101 .ir_attach = NULL,
102 .ir_detach = NULL,
103 .ir_init = none_init,
104 .ir_deinit = none_deinit,
105 .ir_node_init = none_node_init,
106 .ir_node_deinit = none_node_deinit,
107 .ir_rate = none_rate,
108 .ir_tx_complete = none_tx_complete,
109 .ir_tx_update = none_tx_update,
110 .ir_setinterval = none_setinterval,
111 };
112 IEEE80211_RATECTL_MODULE(ratectl_none, 1);
113 IEEE80211_RATECTL_ALG(none, IEEE80211_RATECTL_NONE, none);
114