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nl80211: Add probe response offload attribute

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Notify user-space about probe-response offloading support in the driver.

A wiphy flag is used to indicate support and a bitmap of protocols
determines which protocols are supported.

Signed-off-by: Guy Eilam <guy@wizery.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Arik Nemtsov 2011-11-10 11:28:55 +02:00 committed by John W. Linville
parent d64d373ffe
commit 87bbbe22f8
3 changed files with 42 additions and 0 deletions
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28
include/linux/nl80211.h
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@ -1160,6 +1160,11 @@ enum nl80211_commands {
*
* @NL80211_ATTR_FEATURE_FLAGS: This u32 attribute contains flags from
* &enum nl80211_feature_flags and is advertised in wiphy information.
* @NL80211_ATTR_PROBE_RESP_OFFLOAD: Indicates that the HW responds to probe
*
* requests while operating in AP-mode.
* This attribute holds a bitmap of the supported protocols for
* offloading (see &enum nl80211_probe_resp_offload_support_attr).
*
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
@ -1395,6 +1400,8 @@ enum nl80211_attrs {
NL80211_ATTR_FEATURE_FLAGS,
NL80211_ATTR_PROBE_RESP_OFFLOAD,
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
@ -2727,4 +2734,25 @@ enum nl80211_feature_flags {
NL80211_FEATURE_SK_TX_STATUS = 1 << 0,
};
/**
* enum nl80211_probe_resp_offload_support_attr - optional supported
* protocols for probe-response offloading by the driver/FW.
* To be used with the %NL80211_ATTR_PROBE_RESP_OFFLOAD attribute.
* Each enum value represents a bit in the bitmap of supported
* protocols. Typically a subset of probe-requests belonging to a
* supported protocol will be excluded from offload and uploaded
* to the host.
*
* @NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS: Support for WPS ver. 1
* @NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2: Support for WPS ver. 2
* @NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P: Support for P2P
* @NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U: Support for 802.11u
*/
enum nl80211_probe_resp_offload_support_attr {
NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS = 1<<0,
NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 = 1<<1,
NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P = 1<<2,
NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U = 1<<3,
};
#endif /* __LINUX_NL80211_H */

10
include/net/cfg80211.h
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@ -1694,6 +1694,8 @@ struct cfg80211_ops {
* @WIPHY_FLAG_REPORTS_OBSS: the device will report beacons from other BSSes
* when there are virtual interfaces in AP mode by calling
* cfg80211_report_obss_beacon().
* @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD: When operating as an AP, the device
* responds to probe-requests in hardware.
*/
enum wiphy_flags {
WIPHY_FLAG_CUSTOM_REGULATORY = BIT(0),
@ -1714,6 +1716,7 @@ enum wiphy_flags {
WIPHY_FLAG_TDLS_EXTERNAL_SETUP = BIT(16),
WIPHY_FLAG_HAVE_AP_SME = BIT(17),
WIPHY_FLAG_REPORTS_OBSS = BIT(18),
WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD = BIT(19),
};
/**
@ -1982,6 +1985,13 @@ struct wiphy {
u32 available_antennas_tx;
u32 available_antennas_rx;
/*
* Bitmap of supported protocols for probe response offloading
* see &enum nl80211_probe_resp_offload_support_attr. Only valid
* when the wiphy flag @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD is set.
*/
u32 probe_resp_offload;
/* If multiple wiphys are registered and you're handed e.g.
* a regular netdev with assigned ieee80211_ptr, you won't
* know whether it points to a wiphy your driver has registered

4
net/wireless/nl80211.c
View File

@ -759,6 +759,10 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
dev->wiphy.available_antennas_rx);
if (dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD)
NLA_PUT_U32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
dev->wiphy.probe_resp_offload);
if ((dev->wiphy.available_antennas_tx ||
dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
u32 tx_ant = 0, rx_ant = 0;