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cfg80211: add KHz variants of frame RX API

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Drivers may wish to report the RX frequency in units of
KHz. Provide cfg80211_rx_mgmt_khz() and wrap it with
cfg80211_rx_mgmt() so exisiting drivers which can't report
KHz anyway don't need to change. Add a similar wrapper for
cfg80211_report_obss_beacon() so the frequency units stay
somewhat consistent.

This doesn't actually change the nl80211 API yet.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
Link: https://lore.kernel.org/r/20200430172554.18383-2-thomas@adapt-ip.com
[fix mac80211 calling the non-khz version of obss beacon report,
 drop trace point name changes]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Thomas Pedersen
2020-04-30 10:25:50 -07:00
committed by Johannes Berg
parent c03369558c
commit e76fede8bf
6 changed files with 71 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
include/net/cfg80211.h
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@@ -6988,6 +6988,26 @@ void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
enum nl80211_connect_failed_reason reason,
gfp_t gfp);
/**
* cfg80211_rx_mgmt_khz - notification of received, unprocessed management frame
* @wdev: wireless device receiving the frame
* @freq: Frequency on which the frame was received in KHz
* @sig_dbm: signal strength in dBm, or 0 if unknown
* @buf: Management frame (header + body)
* @len: length of the frame data
* @flags: flags, as defined in enum nl80211_rxmgmt_flags
*
* This function is called whenever an Action frame is received for a station
* mode interface, but is not processed in kernel.
*
* Return: %true if a user space application has registered for this frame.
* For action frames, that makes it responsible for rejecting unrecognized
* action frames; %false otherwise, in which case for action frames the
* driver is responsible for rejecting the frame.
*/
bool cfg80211_rx_mgmt_khz(struct wireless_dev *wdev, int freq, int sig_dbm,
const u8 *buf, size_t len, u32 flags);
/**
* cfg80211_rx_mgmt - notification of received, unprocessed management frame
* @wdev: wireless device receiving the frame
@@ -7005,8 +7025,13 @@ void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
* action frames; %false otherwise, in which case for action frames the
* driver is responsible for rejecting the frame.
*/
bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_dbm,
const u8 *buf, size_t len, u32 flags);
static inline bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq,
int sig_dbm, const u8 *buf, size_t len,
u32 flags)
{
return cfg80211_rx_mgmt_khz(wdev, MHZ_TO_KHZ(freq), sig_dbm, buf, len,
flags);
}
/**
* cfg80211_mgmt_tx_status - notification of TX status for management frame
@@ -7204,6 +7229,21 @@ void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
u64 cookie, bool acked, s32 ack_signal,
bool is_valid_ack_signal, gfp_t gfp);
/**
* cfg80211_report_obss_beacon_khz - report beacon from other APs
* @wiphy: The wiphy that received the beacon
* @frame: the frame
* @len: length of the frame
* @freq: frequency the frame was received on in KHz
* @sig_dbm: signal strength in dBm, or 0 if unknown
*
* Use this function to report to userspace when a beacon was
* received. It is not useful to call this when there is no
* netdev that is in AP/GO mode.
*/
void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
size_t len, int freq, int sig_dbm);
/**
* cfg80211_report_obss_beacon - report beacon from other APs
* @wiphy: The wiphy that received the beacon
@@ -7216,9 +7256,13 @@ void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
* received. It is not useful to call this when there is no
* netdev that is in AP/GO mode.
*/
void cfg80211_report_obss_beacon(struct wiphy *wiphy,
const u8 *frame, size_t len,
int freq, int sig_dbm);
static inline void cfg80211_report_obss_beacon(struct wiphy *wiphy,
const u8 *frame, size_t len,
int freq, int sig_dbm)
{
cfg80211_report_obss_beacon_khz(wiphy, frame, len, MHZ_TO_KHZ(freq),
sig_dbm);
}
/**
* cfg80211_reg_can_beacon - check if beaconing is allowed