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nl80211: Add driver flag for firmware-based BSS selection

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This new flag can be used to change wpa_supplicant behavior in the
default ap_scan=1 mode to move BSS selection into the driver (likely
firmware). This commit is only adding the flag; separate commits
will be used to change the actual connection/roaming behavior.
This commit is contained in:
Vivek Natarajan 2011-09-26 14:26:55 +03:00 committed by Jouni Malinen
parent daa30c23aa
commit 004ba773ce
2 changed files with 11 additions and 0 deletions
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2
src/drivers/driver.h
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@ -689,6 +689,8 @@ struct wpa_driver_capa {
#define WPA_DRIVER_FLAGS_EAPOL_TX_STATUS 0x00010000
/* Driver indicates TX status events for Deauth/Disassoc frames */
#define WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS 0x00020000
/* Driver supports roaming (BSS selection) in firmware */
#define WPA_DRIVER_FLAGS_BSS_SELECTION 0x00040000
unsigned int flags;
int max_scan_ssids;

9
src/drivers/driver_nl80211.c
View file

@ -1688,6 +1688,7 @@ struct wiphy_info_data {
int connect_supported;
int offchan_tx_supported;
int max_remain_on_chan;
int firmware_roam;
};
@ -1811,6 +1812,9 @@ broken_combination:
if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK])
info->offchan_tx_supported = 1;
if (tb[NL80211_ATTR_ROAM_SUPPORT])
info->firmware_roam = 1;
if (tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION])
info->max_remain_on_chan =
nla_get_u32(tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]);
@ -1884,6 +1888,11 @@ static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
drv->capa.flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
}
if (info.firmware_roam) {
wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming");
drv->capa.flags |= WPA_DRIVER_FLAGS_BSS_SELECTION;
}
drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES;
drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
if (info.p2p_supported)