diff options
Diffstat (limited to 'net/mac80211/spectmgmt.c')
-rw-r--r-- | net/mac80211/spectmgmt.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/net/mac80211/spectmgmt.c b/net/mac80211/spectmgmt.c new file mode 100644 index 000000000000..f72bad636d8e --- /dev/null +++ b/net/mac80211/spectmgmt.c | |||
@@ -0,0 +1,86 @@ | |||
1 | /* | ||
2 | * spectrum management | ||
3 | * | ||
4 | * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi> | ||
5 | * Copyright 2002-2005, Instant802 Networks, Inc. | ||
6 | * Copyright 2005-2006, Devicescape Software, Inc. | ||
7 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | ||
8 | * Copyright 2007, Michael Wu <flamingice@sourmilk.net> | ||
9 | * Copyright 2007-2008, Intel Corporation | ||
10 | * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or modify | ||
13 | * it under the terms of the GNU General Public License version 2 as | ||
14 | * published by the Free Software Foundation. | ||
15 | */ | ||
16 | |||
17 | #include <linux/ieee80211.h> | ||
18 | #include <net/wireless.h> | ||
19 | #include <net/mac80211.h> | ||
20 | #include "ieee80211_i.h" | ||
21 | #include "sta_info.h" | ||
22 | #include "wme.h" | ||
23 | |||
24 | static void ieee80211_send_refuse_measurement_request(struct ieee80211_sub_if_data *sdata, | ||
25 | struct ieee80211_msrment_ie *request_ie, | ||
26 | const u8 *da, const u8 *bssid, | ||
27 | u8 dialog_token) | ||
28 | { | ||
29 | struct ieee80211_local *local = sdata->local; | ||
30 | struct sk_buff *skb; | ||
31 | struct ieee80211_mgmt *msr_report; | ||
32 | |||
33 | skb = dev_alloc_skb(sizeof(*msr_report) + local->hw.extra_tx_headroom + | ||
34 | sizeof(struct ieee80211_msrment_ie)); | ||
35 | |||
36 | if (!skb) { | ||
37 | printk(KERN_ERR "%s: failed to allocate buffer for " | ||
38 | "measurement report frame\n", sdata->dev->name); | ||
39 | return; | ||
40 | } | ||
41 | |||
42 | skb_reserve(skb, local->hw.extra_tx_headroom); | ||
43 | msr_report = (struct ieee80211_mgmt *)skb_put(skb, 24); | ||
44 | memset(msr_report, 0, 24); | ||
45 | memcpy(msr_report->da, da, ETH_ALEN); | ||
46 | memcpy(msr_report->sa, sdata->dev->dev_addr, ETH_ALEN); | ||
47 | memcpy(msr_report->bssid, bssid, ETH_ALEN); | ||
48 | msr_report->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | ||
49 | IEEE80211_STYPE_ACTION); | ||
50 | |||
51 | skb_put(skb, 1 + sizeof(msr_report->u.action.u.measurement)); | ||
52 | msr_report->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; | ||
53 | msr_report->u.action.u.measurement.action_code = | ||
54 | WLAN_ACTION_SPCT_MSR_RPRT; | ||
55 | msr_report->u.action.u.measurement.dialog_token = dialog_token; | ||
56 | |||
57 | msr_report->u.action.u.measurement.element_id = WLAN_EID_MEASURE_REPORT; | ||
58 | msr_report->u.action.u.measurement.length = | ||
59 | sizeof(struct ieee80211_msrment_ie); | ||
60 | |||
61 | memset(&msr_report->u.action.u.measurement.msr_elem, 0, | ||
62 | sizeof(struct ieee80211_msrment_ie)); | ||
63 | msr_report->u.action.u.measurement.msr_elem.token = request_ie->token; | ||
64 | msr_report->u.action.u.measurement.msr_elem.mode |= | ||
65 | IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED; | ||
66 | msr_report->u.action.u.measurement.msr_elem.type = request_ie->type; | ||
67 | |||
68 | ieee80211_tx_skb(sdata, skb, 0); | ||
69 | } | ||
70 | |||
71 | void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, | ||
72 | struct ieee80211_mgmt *mgmt, | ||
73 | size_t len) | ||
74 | { | ||
75 | /* | ||
76 | * Ignoring measurement request is spec violation. | ||
77 | * Mandatory measurements must be reported optional | ||
78 | * measurements might be refused or reported incapable | ||
79 | * For now just refuse | ||
80 | * TODO: Answer basic measurement as unmeasured | ||
81 | */ | ||
82 | ieee80211_send_refuse_measurement_request(sdata, | ||
83 | &mgmt->u.action.u.measurement.msr_elem, | ||
84 | mgmt->sa, mgmt->bssid, | ||
85 | mgmt->u.action.u.measurement.dialog_token); | ||
86 | } | ||