DGNum/hostapd
6
0
Fork 0
Code Issues Pull requests 1 Projects Releases Packages Wiki Activity Actions
hostapd/src/ap/dfs.h

37 lines
1.4 KiB
C
Raw Normal View History

hostapd: Add AP DFS support Add DFS structures/events handlers, CAC handling, and radar detection. By default, after radar is detected or the channel became unavailable, a random channel will be chosen. This patches are based on the original work by Boris Presman and Victor Goldenshtein. Most of the DFS code is moved to a new dfs.c/dfs.h files. Cc: Boris Presman <boris.presman@ti.com> Cc: Victor Goldenshtein <victorg@ti.com> Signed-hostap: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-hostap: Janusz Dziedzic <janusz.dziedzic@tieto.com>
2013-10-15 19:27:25 +02:00
/*
* DFS - Dynamic Frequency Selection
* Copyright (c) 2002-2013, Jouni Malinen <j@w1.fi>
DFS: Handle pre-CAC expired event As FCC DFS requirement does not explicitly mention about the validity of the (pre-)CAC when channel is switched, it is safe to assume that the pre-CAC result will not be valid once the CAC completed channel is switched or radar detection is not active on the (CAC completed) channel within a time period which is allowed (10 seconds - channel switch time) as per FCC DFS requirement. Use the new driver event to allow the driver to notify expiry of the CAC result on a channel. Move the DFS state of the channel to 'usable' when processing pre-CAC expired event. This means any future operation on that channel will require a new CAC to be completed. This event is applicable only when DFS is not offloaded to the kernel driver. Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qti.qualcomm.com>
2017-03-08 06:13:17 +01:00
* Copyright (c) 2013-2017, Qualcomm Atheros, Inc.
hostapd: Add AP DFS support Add DFS structures/events handlers, CAC handling, and radar detection. By default, after radar is detected or the channel became unavailable, a random channel will be chosen. This patches are based on the original work by Boris Presman and Victor Goldenshtein. Most of the DFS code is moved to a new dfs.c/dfs.h files. Cc: Boris Presman <boris.presman@ti.com> Cc: Victor Goldenshtein <victorg@ti.com> Signed-hostap: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-hostap: Janusz Dziedzic <janusz.dziedzic@tieto.com>
2013-10-15 19:27:25 +02:00
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#ifndef DFS_H
#define DFS_H
DFS: Convert hostapd_data use to hostapd_iface DFS operations are specific to the interface (radio/wiphy), not BSS (netdev/vif), so hostapd_iface is the appropriate element to use in them. Signed-hostap: Jouni Malinen <j@w1.fi>
2013-11-03 17:48:03 +01:00
int hostapd_handle_dfs(struct hostapd_iface *iface);
hostapd: Add AP DFS support Add DFS structures/events handlers, CAC handling, and radar detection. By default, after radar is detected or the channel became unavailable, a random channel will be chosen. This patches are based on the original work by Boris Presman and Victor Goldenshtein. Most of the DFS code is moved to a new dfs.c/dfs.h files. Cc: Boris Presman <boris.presman@ti.com> Cc: Victor Goldenshtein <victorg@ti.com> Signed-hostap: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-hostap: Janusz Dziedzic <janusz.dziedzic@tieto.com>
2013-10-15 19:27:25 +02:00
DFS: Convert hostapd_data use to hostapd_iface DFS operations are specific to the interface (radio/wiphy), not BSS (netdev/vif), so hostapd_iface is the appropriate element to use in them. Signed-hostap: Jouni Malinen <j@w1.fi>
2013-11-03 17:48:03 +01:00
int hostapd_dfs_complete_cac(struct hostapd_iface *iface, int success, int freq,
hostapd: DFS with 40/80 MHz channel width support Signed-hostap: Janusz Dziedzic <janusz.dziedzic@tieto.com>
2013-10-16 11:18:52 +02:00
int ht_enabled, int chan_offset, int chan_width,
int cf1, int cf2);
DFS: Handle pre-CAC expired event As FCC DFS requirement does not explicitly mention about the validity of the (pre-)CAC when channel is switched, it is safe to assume that the pre-CAC result will not be valid once the CAC completed channel is switched or radar detection is not active on the (CAC completed) channel within a time period which is allowed (10 seconds - channel switch time) as per FCC DFS requirement. Use the new driver event to allow the driver to notify expiry of the CAC result on a channel. Move the DFS state of the channel to 'usable' when processing pre-CAC expired event. This means any future operation on that channel will require a new CAC to be completed. This event is applicable only when DFS is not offloaded to the kernel driver. Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qti.qualcomm.com>
2017-03-08 06:13:17 +01:00
int hostapd_dfs_pre_cac_expired(struct hostapd_iface *iface, int freq,
int ht_enabled, int chan_offset, int chan_width,
int cf1, int cf2);
DFS: Convert hostapd_data use to hostapd_iface DFS operations are specific to the interface (radio/wiphy), not BSS (netdev/vif), so hostapd_iface is the appropriate element to use in them. Signed-hostap: Jouni Malinen <j@w1.fi>
2013-11-03 17:48:03 +01:00
int hostapd_dfs_radar_detected(struct hostapd_iface *iface, int freq,
hostapd: DFS with 40/80 MHz channel width support Signed-hostap: Janusz Dziedzic <janusz.dziedzic@tieto.com>
2013-10-16 11:18:52 +02:00
int ht_enabled,
int chan_offset, int chan_width,
int cf1, int cf2);
DFS: Convert hostapd_data use to hostapd_iface DFS operations are specific to the interface (radio/wiphy), not BSS (netdev/vif), so hostapd_iface is the appropriate element to use in them. Signed-hostap: Jouni Malinen <j@w1.fi>
2013-11-03 17:48:03 +01:00
int hostapd_dfs_nop_finished(struct hostapd_iface *iface, int freq,
hostapd: DFS with 40/80 MHz channel width support Signed-hostap: Janusz Dziedzic <janusz.dziedzic@tieto.com>
2013-10-16 11:18:52 +02:00
int ht_enabled,
int chan_offset, int chan_width, int cf1, int cf2);
hostapd: Configure spectrum management capability Add configuration of Spectrum Management subfield in the Capability Information of Beacon, Probe Response, and Association Response frames. Spectrum Management bit is set when directly requested by new configuration option spectrum_mgmt_required=1 or when AP is running on DFS channels. In the future, also TPC shall require this bit to be set. Signed-hostap: Srinivasan <srinivasanb@posedge.com> Signed-hostap: Chaitanya T K <chaitanyatk@posedge.com> Signed-hostap: Marek Puzyniak <marek.puzyniak@tieto.com>
2014-02-21 14:42:18 +01:00
int hostapd_is_dfs_required(struct hostapd_iface *iface);
DFS: Rename and export hostapd_config_dfs_chan_available helper Rename DFS helper hostapd_config_dfs_chan_available() to hostapd_is_dfs_chan_available(). Enable access to this helper function from other hostapd components. Signed-off-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
2020-01-28 16:09:51 +01:00
int hostapd_is_dfs_chan_available(struct hostapd_iface *iface);
DFS offload: Add main DFS handler for offloaded case Add handling logic for DFS offloaded case, and add a helper function that takes the frequency (MHz) as a param and returns 1 if given channel requires DFS, or 0 otherwise. Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2015-03-05 02:24:36 +01:00
int hostapd_dfs_start_cac(struct hostapd_iface *iface, int freq,
int ht_enabled, int chan_offset, int chan_width,
int cf1, int cf2);
int hostapd_handle_dfs_offload(struct hostapd_iface *iface);
DFS: Add new hostapd_is_dfs_overlap() helper Add a new hostapd_is_dfs_overlap() helper function to DFS module. This function tells whether the selected frequency range overlaps with DFS channels in the current hostapd configuration. Selected frequency reange is specified by its center frequency and bandwidth. Signed-off-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
2020-01-28 16:09:52 +01:00
int hostapd_is_dfs_overlap(struct hostapd_iface *iface, enum chan_width width,
int center_freq);
hostapd: DFS with 40/80 MHz channel width support Signed-hostap: Janusz Dziedzic <janusz.dziedzic@tieto.com>
2013-10-16 11:18:52 +02:00
hostapd: Add AP DFS support Add DFS structures/events handlers, CAC handling, and radar detection. By default, after radar is detected or the channel became unavailable, a random channel will be chosen. This patches are based on the original work by Boris Presman and Victor Goldenshtein. Most of the DFS code is moved to a new dfs.c/dfs.h files. Cc: Boris Presman <boris.presman@ti.com> Cc: Victor Goldenshtein <victorg@ti.com> Signed-hostap: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-hostap: Janusz Dziedzic <janusz.dziedzic@tieto.com>
2013-10-15 19:27:25 +02:00
#endif /* DFS_H */
Reference in a new issue Copy permalink