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cfg80211: Pass TDLS peer capability information in tdls_mgmt

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While framing the TDLS Setup Confirmation frame, the driver needs to
know if the TDLS peer is VHT/HT/WMM capable and thus shall construct
the VHT/HT operation / WMM parameter elements accordingly. Supplicant
determines if the TDLS peer is VHT/HT/WMM capable based on the
presence of the respective IEs in the received TDLS Setup Response frame.

The host driver should not need to parse the received TDLS Response
frame and thus, should be able to rely on the supplicant to indicate
the capability of the peer through additional flags while transmitting
the TDLS Setup Confirmation frame through tdls_mgmt operations.

Signed-off-by: Sunil Dutt Undekari <usdutt@qti.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Sunil Dutt Undekari 2014-02-20 16:22:09 +05:30 • committed by Johannes Berg
commit df942e7ba7
7 changed files with 47 additions and 13 deletions
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21
include/uapi/linux/nl80211.h
View file

@ -1575,6 +1575,9 @@ enum nl80211_commands {
* advertise values that cannot always be met. In such cases, an attempt
* to add a new station entry with @NL80211_CMD_NEW_STATION may fail.
*
* @NL80211_ATTR_TDLS_PEER_CAPABILITY: flags for TDLS peer capabilities, u32.
* As specified in the &enum nl80211_tdls_peer_capability.
*
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
*/
@ -1908,6 +1911,8 @@ enum nl80211_attrs {
NL80211_ATTR_MAX_AP_ASSOC_STA,
NL80211_ATTR_TDLS_PEER_CAPABILITY,
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
@ -4074,4 +4079,20 @@ struct nl80211_vendor_cmd_info {
__u32 subcmd;
};
/**
* enum nl80211_tdls_peer_capability - TDLS peer flags.
*
* Used by tdls_mgmt() to determine which conditional elements need
* to be added to TDLS Setup frames.
*
* @NL80211_TDLS_PEER_HT: TDLS peer is HT capable.
* @NL80211_TDLS_PEER_VHT: TDLS peer is VHT capable.
* @NL80211_TDLS_PEER_WMM: TDLS peer is WMM capable.
*/
enum nl80211_tdls_peer_capability {
NL80211_TDLS_PEER_HT = 1<<0,
NL80211_TDLS_PEER_VHT = 1<<1,
NL80211_TDLS_PEER_WMM = 1<<2,
};
#endif /* __LINUX_NL80211_H */