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nl80211: Start using NL80211_ATTR_LOCAL_STATE_CHANGE 

This removes transmission of some unnecessary Deauthentication
frames in cases where we only need to clear the local state. In
addition, this resolves issues for 802.11r FT-over-DS by allowing
authentication state to be set locally even when no actual
Authentication frame is to be transmitted.
This commit is contained in:
Jouni Malinen 2010-04-08 11:31:37 +03:00
parent 27cf8871ad
commit 7733991281
1 changed files with 16 additions and 7 deletions
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23
src/drivers/driver_nl80211.c
View File

@ -132,7 +132,8 @@ static int wpa_driver_nl80211_set_mode(void *priv, int mode);
static int
wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
const u8 *addr, int cmd, u16 reason_code);
const u8 *addr, int cmd, u16 reason_code,
int local_state_change);
static void nl80211_remove_monitor_interface(
struct wpa_driver_nl80211_data *drv);
@ -1845,7 +1846,7 @@ static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
"mismatch (" MACSTR ")", MAC2STR(addr));
wpa_driver_nl80211_mlme(drv, addr,
NL80211_CMD_DEAUTHENTICATE,
WLAN_REASON_PREV_AUTH_NOT_VALID);
WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
}
}
@ -2216,7 +2217,8 @@ nla_put_failure:
static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
const u8 *addr, int cmd, u16 reason_code)
const u8 *addr, int cmd, u16 reason_code,
int local_state_change)
{
int ret = -1;
struct nl_msg *msg;
@ -2230,6 +2232,8 @@ static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
if (local_state_change)
NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
msg = NULL;
@ -2252,7 +2256,7 @@ static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
wpa_printf(MSG_DEBUG, "%s", __func__);
drv->associated = 0;
return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
reason_code);
reason_code, 0);
}
@ -2266,7 +2270,7 @@ static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
wpa_printf(MSG_DEBUG, "%s", __func__);
drv->associated = 0;
return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
reason_code);
reason_code, 0);
}
@ -2280,7 +2284,7 @@ static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
wpa_printf(MSG_DEBUG, "%s", __func__);
drv->associated = 0;
return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
reason_code);
reason_code, 0);
}
@ -2366,6 +2370,10 @@ retry:
goto nla_put_failure;
wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
if (params->local_state_change) {
wpa_printf(MSG_DEBUG, " * Local state change only");
NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
}
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
msg = NULL;
@ -2373,7 +2381,8 @@ retry:
wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
"(%s)", ret, strerror(-ret));
count++;
if (ret == -EALREADY && count == 1 && params->bssid) {
if (ret == -EALREADY && count == 1 && params->bssid &&
!params->local_state_change) {
/*
* mac80211 does not currently accept new
* authentication if we are already authenticated. As a