projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 39192c0b JB |
1 | /* |
| 2 | * spectrum management | |
| 3 | * | |
| 4 | * Copyright 2003, Jouni Malinen <[email protected]> | |
| 5 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
| 6 | * Copyright 2005-2006, Devicescape Software, Inc. | |
| 7 | * Copyright 2006-2007 Jiri Benc <[email protected]> | |
| 8 | * Copyright 2007, Michael Wu <[email protected]> | |
| 9 | * Copyright 2007-2008, Intel Corporation | |
| 10 | * Copyright 2008, Johannes Berg <[email protected]> | |
| 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> | |
| d3236553 | 18 | #include <net/cfg80211.h> |
| 39192c0b JB |
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 " | |
| 47846c9b | 38 | "measurement report frame\n", sdata->name); |
| 39192c0b JB |
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); | |
| 47846c9b | 46 | memcpy(msr_report->sa, sdata->vif.addr, ETH_ALEN); |
| 39192c0b JB |
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 | ||
| 62ae67be | 68 | ieee80211_tx_skb(sdata, skb); |
| 39192c0b JB |
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 | } |