sys/netproto/802_11/wlan/ieee80211_ratectl_none.c

   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
  48 none_init(struct ieee80211vap *vap)
  49 {
  50 }
  51
  52 static void
  53 none_deinit(struct ieee80211vap *vap)
  54 {
  55         IEEE80211_FREE(vap->iv_rs, M_80211_RATECTL);
  56 }
  57
  58 static void
  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
  65 none_node_deinit(struct ieee80211_node *ni)
  66 {
  67 }
  68
  69 static int
  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
  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
  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
  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);