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Add support for driver command to update roaming policy

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The network block bssid parameter can be used to force a specific BSS to
be used for a connection. It is also possible to modify this parameter
during an association. Previously, that did not result in any
notification to the driver which was somewhat problematic with drivers
that take care of BSS selection. Add a new mechanism to allow
wpa_supplicant to provide a driver update if the bssid parameter change
for the current connection modifies roaming policy (roaming
allowed/disallowed within ESS).

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2014-09-11 15:52:37 +03:00 • committed by Jouni Malinen
parent 0cd9846c63
commit 0ef023e478
5 changed files with 52 additions and 3 deletions
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16
src/drivers/driver.h
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@ -2804,6 +2804,22 @@ struct wpa_driver_ops {
*/
int (*status)(void *priv, char *buf, size_t buflen);
/**
* roaming - Set roaming policy for driver-based BSS selection
* @priv: Private driver interface data
* @allowed: Whether roaming within ESS is allowed
* @bssid: Forced BSSID if roaming is disabled or %NULL if not set
* Returns: Length of written status information or -1 on failure
*
* This optional callback can be used to update roaming policy from the
* associate() command (bssid being set there indicates that the driver
* should not roam before getting this roaming() call to allow roaming.
* If the driver does not indicate WPA_DRIVER_FLAGS_BSS_SELECTION
* capability, roaming policy is handled within wpa_supplicant and there
* is no need to implement or react to this callback.
*/
int (*roaming)(void *priv, int allowed, const u8 *bssid);
#ifdef CONFIG_MACSEC
int (*macsec_init)(void *priv, struct macsec_init_params *params);