cfg80211: remove remain-on-channel channel type

As mwifiex (and mac80211 in the software case) are the
only drivers actually implementing remain-on-channel
with channel type, userspace can't be relying on it.
This is the case, as it's used only for P2P operations
right now.

Rather than adding a flag to tell userspace whether or
not it can actually rely on it, simplify all the code
by removing the ability to use different channel types.
Leave only the validation of the attribute, so that if
we extend it again later (with the needed capability
flag), it can't break userspace sending invalid data.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 6 insertions, 8 deletions

diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 1a9a819cfab0..43cd6fa084c5 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -401,8 +401,7 @@
  *      a response while being associated to an AP on another channel.
  *      %NL80211_ATTR_IFINDEX is used to specify which interface (and thus
  *      radio) is used. %NL80211_ATTR_WIPHY_FREQ is used to specify the
- *      frequency for the operation and %NL80211_ATTR_WIPHY_CHANNEL_TYPE may be
- *      optionally used to specify additional channel parameters.
+ *      frequency for the operation.
  *      %NL80211_ATTR_DURATION is used to specify the duration in milliseconds
  *      to remain on the channel. This command is also used as an event to
  *      notify when the requested duration starts (it may take a while for the
@@ -440,12 +439,11 @@
  *      as an event indicating reception of a frame that was not processed in
  *      kernel code, but is for us (i.e., which may need to be processed in a
  *      user space application). %NL80211_ATTR_FRAME is used to specify the
- *      frame contents (including header). %NL80211_ATTR_WIPHY_FREQ (and
- *      optionally %NL80211_ATTR_WIPHY_CHANNEL_TYPE) is used to indicate on
- *      which channel the frame is to be transmitted or was received. If this
- *      channel is not the current channel (remain-on-channel or the
- *      operational channel) the device will switch to the given channel and
- *      transmit the frame, optionally waiting for a response for the time
+ *      frame contents (including header). %NL80211_ATTR_WIPHY_FREQ is used
+ *      to indicate on which channel the frame is to be transmitted or was
+ *      received. If this channel is not the current channel (remain-on-channel
+ *      or the operational channel) the device will switch to the given channel
+ *      and transmit the frame, optionally waiting for a response for the time
  *      specified using %NL80211_ATTR_DURATION. When called, this operation
  *      returns a cookie (%NL80211_ATTR_COOKIE) that will be included with the
  *      TX status event pertaining to the TX request.