Commit Graph

5 Commits

Author SHA1 Message Date
Adrian Chadd
ead404d417 Change the prototype so the radar enable can fail. 2012-01-28 21:44:42 +00:00
Adrian Chadd
e69c2d83cf Remove the now unneeded references to these DFS methods.
Sorry for the noise everyone.

Approved by:	re (kib, blanket)
2011-08-09 15:46:52 +00:00
Adrian Chadd
8db87e4079 Introduce some more DFS related hooks, inspired both by local work
and the Atheros reference code.

The radar detection code needs to know what the current DFS domain is.
Since net80211 doesn't currently know this information, it's extracted
from the HAL regulatory domain information.

The specifics:

* add a new ath_dfs API hook, ath_dfs_init_radar_filters(), which
  updates the radar filters whenever the regulatory domain changes.
* add HAL_DFS_DOMAIN which describes the currently configured DFS domain .
* add a new HAL internal variable which tracks the currently configured
  HAL DFS domain.
* add a new HAL capability, HAL_CAP_DFS_DMN, which returns the currently
  configured HAL DFS domain setting.
* update the HAL DFS domain setting whenever the channel setting is
  updated.

Since this isn't currently used by any radar code, these should all
be no-ops for existing users.

Obtained from:	Atheros
Submitted by:	KBC Networks, sibridge
Approved by:	re (kib, blanket)
2011-08-08 16:22:42 +00:00
Adrian Chadd
7e5eb44d14 A few changes to make radar detection implementable in a hal_dfs/
module.

* If sc->sc_dodfs is set to 1 by the ath_dfs_radar_enable(),
  set the relevant rx filter bit to begin receiving radar PHY
  errors. The HAL code already knows how to set the relevant
  error mask register to enable radar events.

* Add a missing call to ath_dfs_radar_enable() after ath_hal_reset()

* change ath_dfs_process_phyerr() to take a const char *buf for now,
  rather than a descriptor. This way it can get access to the packet
  buffer contents.
2011-06-04 04:14:59 +00:00
Adrian Chadd
48237774e4 Flesh out the radar detection related operations for the ath driver.
This is in no way a complete DFS/radar detection implementation!
It merely creates an abstracted interface which allows for future
development of the DFS radar detection code.

Note: Net80211 already handles the bulk of the DFS machinery,
all we need to do here is figure out that a radar event has occured
and inform it as such. It then drives the DFS state engine for us.

The "null" DFS radar detection module is included by default;
it doesn't require a device line.

This commit:

* Adds a simple abstracted layer for radar detection state -
  sys/dev/ath/ath_dfs/;
* Implements a null DFS module which doesn't do anything;
  (ie, implements the exact behaviour at the moment);
* Adds hooks to the ath driver to process received radar events
  and gives the DFS module a chance to determine whether
  a radar has been detected.

Obtained from:	Atheros
2011-06-01 20:09:49 +00:00