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authorVivek Natarajan <nataraja@qca.qualcomm.com>2011-08-29 14:23:03 +0530
committerJohn W. Linville <linville@tuxdriver.com>2011-09-13 15:42:31 -0400
commitf4b34b550a5428345f3794e62de48ad5a3db3954 (patch)
tree50d5c3b482bd018069fdde870f0c472808156070 /include/linux/nl80211.h
parentf0425beda4d404a6e751439b562100b902ba9c98 (diff)
cfg80211/nl80211: Indicate roaming feature capability to userspace.
When the rssi of the current AP drops, both wpa_supplicant and the firmware may do a background scan to find a better AP and try to associate. Since firmware based roaming is faster, inform wpa_supplicant to avoid roaming and let the firmware decide to roam if necessary. For fullmac drivers like ath6kl, it is just enough to provide the ESSID and the firmware will decide on the BSSID. Since it is not possible to do pre-auth during roaming for fullmac drivers, the wpa_supplicant needs to completely disconnect with the old AP and reconnect with the new AP. This consumes lot of time and it is better to leave the roaming decision to the firmware. Signed-off-by: Vivek Natarajan <nataraja@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'include/linux/nl80211.h')
-rw-r--r--include/linux/nl80211.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 0343504082a..f2d75e3ceb4 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -1045,6 +1045,9 @@ enum nl80211_commands {
* @NL80211_ATTR_STA_WME: Nested attribute containing the wme configuration
* of the station, see &enum nl80211_sta_wme_attr.
*
+ * @NL80211_ATTR_ROAM_SUPPORT: Indicates whether the firmware is capable of
+ * roaming to another AP in the same ESS if the signal lever is low.
+ *
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
*/
@@ -1257,6 +1260,8 @@ enum nl80211_attrs {
NL80211_ATTR_STA_WME,
+ NL80211_ATTR_ROAM_SUPPORT,
+
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,