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mac80211: move spectrum management code out 

Like the HT code, this doesn't depend on the STA-mode implementation
and can be handled entirely independently. There's only stub code
for now, but when it gets filled having it in its own file will be
beneficial.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2008-09-09 14:49:03 +02:00 committed by John W. Linville
parent de1ede7ac3
commit 39192c0bcf
5 changed files with 114 additions and 89 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
net/mac80211/Makefile
View File

@ -17,6 +17,7 @@ mac80211-y := \
aes_ccm.o \
cfg.o \
rx.o \
spectmgmt.o \
tx.o \
key.o \
util.o \

5
net/mac80211/ieee80211_i.h
View File

@ -984,6 +984,11 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
struct ieee80211_mgmt *mgmt,
size_t len);
/* Spectrum management */
void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
struct ieee80211_mgmt *mgmt,
size_t len);
/* utility functions/constants */
extern void *mac80211_wiphy_privid; /* for wiphy privid */
extern const unsigned char rfc1042_header[6];

85
net/mac80211/mlme.c
View File

@ -445,53 +445,6 @@ static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
ieee80211_sta_tx(sdata, skb, 0);
}
static void ieee80211_send_refuse_measurement_request(struct ieee80211_sub_if_data *sdata,
struct ieee80211_msrment_ie *request_ie,
const u8 *da, const u8 *bssid,
u8 dialog_token)
{
struct ieee80211_local *local = sdata->local;
struct sk_buff *skb;
struct ieee80211_mgmt *msr_report;
skb = dev_alloc_skb(sizeof(*msr_report) + local->hw.extra_tx_headroom +
sizeof(struct ieee80211_msrment_ie));
if (!skb) {
printk(KERN_ERR "%s: failed to allocate buffer for "
"measurement report frame\n", sdata->dev->name);
return;
}
skb_reserve(skb, local->hw.extra_tx_headroom);
msr_report = (struct ieee80211_mgmt *)skb_put(skb, 24);
memset(msr_report, 0, 24);
memcpy(msr_report->da, da, ETH_ALEN);
memcpy(msr_report->sa, sdata->dev->dev_addr, ETH_ALEN);
memcpy(msr_report->bssid, bssid, ETH_ALEN);
msr_report->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_ACTION);
skb_put(skb, 1 + sizeof(msr_report->u.action.u.measurement));
msr_report->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
msr_report->u.action.u.measurement.action_code =
WLAN_ACTION_SPCT_MSR_RPRT;
msr_report->u.action.u.measurement.dialog_token = dialog_token;
msr_report->u.action.u.measurement.element_id = WLAN_EID_MEASURE_REPORT;
msr_report->u.action.u.measurement.length =
sizeof(struct ieee80211_msrment_ie);
memset(&msr_report->u.action.u.measurement.msr_elem, 0,
sizeof(struct ieee80211_msrment_ie));
msr_report->u.action.u.measurement.msr_elem.token = request_ie->token;
msr_report->u.action.u.measurement.msr_elem.mode |=
IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED;
msr_report->u.action.u.measurement.msr_elem.type = request_ie->type;
ieee80211_sta_tx(sdata, skb, 0);
}
/* MLME */
static void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
struct ieee80211_sta_bss *bss)
@ -1011,24 +964,6 @@ static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
elems.challenge_len + 2, 1);
}
static void ieee80211_sta_process_measurement_req(struct ieee80211_sub_if_data *sdata,
struct ieee80211_mgmt *mgmt,
size_t len)
{
/*
* Ignoring measurement request is spec violation.
* Mandatory measurements must be reported optional
* measurements might be refused or reported incapable
* For now just refuse
* TODO: Answer basic measurement as unmeasured
*/
ieee80211_send_refuse_measurement_request(sdata,
&mgmt->u.action.u.measurement.msr_elem,
mgmt->sa, mgmt->bssid,
mgmt->u.action.u.measurement.dialog_token);
}
static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_sta *ifsta,
struct ieee80211_mgmt *mgmt,
@ -1870,31 +1805,15 @@ static void ieee80211_rx_mgmt_action(struct ieee80211_sub_if_data *sdata,
size_t len,
struct ieee80211_rx_status *rx_status)
{
struct ieee80211_local *local = sdata->local;
/* all categories we currently handle have action_code */
if (len < IEEE80211_MIN_ACTION_SIZE + 1)
/* currently we only handle mesh interface action frames here */
if (!ieee80211_vif_is_mesh(&sdata->vif))
return;
switch (mgmt->u.action.category) {
case WLAN_CATEGORY_SPECTRUM_MGMT:
if (local->hw.conf.channel->band != IEEE80211_BAND_5GHZ)
break;
switch (mgmt->u.action.u.measurement.action_code) {
case WLAN_ACTION_SPCT_MSR_REQ:
if (len < (IEEE80211_MIN_ACTION_SIZE +
sizeof(mgmt->u.action.u.measurement)))
break;
ieee80211_sta_process_measurement_req(sdata, mgmt, len);
break;
}
break;
case PLINK_CATEGORY:
if (ieee80211_vif_is_mesh(&sdata->vif))
mesh_rx_plink_frame(sdata, mgmt, len, rx_status);
break;
case MESH_PATH_SEL_CATEGORY:
if (ieee80211_vif_is_mesh(&sdata->vif))
mesh_rx_path_sel_frame(sdata, mgmt, len);
break;
}

20
net/mac80211/rx.c
View File

@ -1561,12 +1561,26 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
ieee80211_process_delba(sdata, rx->sta, mgmt, len);
break;
}
break;
case WLAN_CATEGORY_SPECTRUM_MGMT:
if (local->hw.conf.channel->band != IEEE80211_BAND_5GHZ)
return RX_DROP_MONITOR;
switch (mgmt->u.action.u.measurement.action_code) {
case WLAN_ACTION_SPCT_MSR_REQ:
if (len < (IEEE80211_MIN_ACTION_SIZE +
sizeof(mgmt->u.action.u.measurement)))
return RX_DROP_MONITOR;
ieee80211_process_measurement_req(sdata, mgmt, len);
break;
}
break;
default:
return RX_CONTINUE;
}
rx->sta->rx_packets++;
dev_kfree_skb(rx->skb);
return RX_QUEUED;
}
return RX_CONTINUE;
}
static ieee80211_rx_result debug_noinline

86
net/mac80211/spectmgmt.c Normal file
View File

@ -0,0 +1,86 @@
/*
* spectrum management
*
* Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi>
* Copyright 2002-2005, Instant802 Networks, Inc.
* Copyright 2005-2006, Devicescape Software, Inc.
* Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
* Copyright 2007, Michael Wu <flamingice@sourmilk.net>
* Copyright 2007-2008, Intel Corporation
* Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/ieee80211.h>
#include <net/wireless.h>
#include <net/mac80211.h>
#include "ieee80211_i.h"
#include "sta_info.h"
#include "wme.h"
static void ieee80211_send_refuse_measurement_request(struct ieee80211_sub_if_data *sdata,
struct ieee80211_msrment_ie *request_ie,
const u8 *da, const u8 *bssid,
u8 dialog_token)
{
struct ieee80211_local *local = sdata->local;
struct sk_buff *skb;
struct ieee80211_mgmt *msr_report;
skb = dev_alloc_skb(sizeof(*msr_report) + local->hw.extra_tx_headroom +
sizeof(struct ieee80211_msrment_ie));
if (!skb) {
printk(KERN_ERR "%s: failed to allocate buffer for "
"measurement report frame\n", sdata->dev->name);
return;
}
skb_reserve(skb, local->hw.extra_tx_headroom);
msr_report = (struct ieee80211_mgmt *)skb_put(skb, 24);
memset(msr_report, 0, 24);
memcpy(msr_report->da, da, ETH_ALEN);
memcpy(msr_report->sa, sdata->dev->dev_addr, ETH_ALEN);
memcpy(msr_report->bssid, bssid, ETH_ALEN);
msr_report->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_ACTION);
skb_put(skb, 1 + sizeof(msr_report->u.action.u.measurement));
msr_report->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
msr_report->u.action.u.measurement.action_code =
WLAN_ACTION_SPCT_MSR_RPRT;
msr_report->u.action.u.measurement.dialog_token = dialog_token;
msr_report->u.action.u.measurement.element_id = WLAN_EID_MEASURE_REPORT;
msr_report->u.action.u.measurement.length =
sizeof(struct ieee80211_msrment_ie);
memset(&msr_report->u.action.u.measurement.msr_elem, 0,
sizeof(struct ieee80211_msrment_ie));
msr_report->u.action.u.measurement.msr_elem.token = request_ie->token;
msr_report->u.action.u.measurement.msr_elem.mode |=
IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED;
msr_report->u.action.u.measurement.msr_elem.type = request_ie->type;
ieee80211_sta_tx(sdata, skb, 0);
}
void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
struct ieee80211_mgmt *mgmt,
size_t len)
{
/*
* Ignoring measurement request is spec violation.
* Mandatory measurements must be reported optional
* measurements might be refused or reported incapable
* For now just refuse
* TODO: Answer basic measurement as unmeasured
*/
ieee80211_send_refuse_measurement_request(sdata,
&mgmt->u.action.u.measurement.msr_elem,
mgmt->sa, mgmt->bssid,
mgmt->u.action.u.measurement.dialog_token);
}