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openwrtv4/package/hostapd/patches/130-wds_ap.patch
Felix Fietkau c8c6f7ec39 mac80211: fix a race condition when bringing up wds sta interfaces on the ap 
SVN-Revision: 18377
2009-11-11 16:32:09 +00:00

248 lines
7.6 KiB
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--- a/hostapd/config.c
+++ b/hostapd/config.c
@@ -1526,6 +1526,8 @@ struct hostapd_config * hostapd_config_r
line, pos);
errors++;
}
+ } else if (os_strcmp(buf, "wds_sta") == 0) {
+ bss->wds_sta = atoi(pos);
} else if (os_strcmp(buf, "ap_max_inactivity") == 0) {
bss->ap_max_inactivity = atoi(pos);
} else if (os_strcmp(buf, "country_code") == 0) {
--- a/hostapd/config.h
+++ b/hostapd/config.h
@@ -198,6 +198,7 @@ struct hostapd_bss_config {
int num_accept_mac;
struct mac_acl_entry *deny_mac;
int num_deny_mac;
+ int wds_sta;
int auth_algs; /* bitfield of allowed IEEE 802.11 authentication
* algorithms, WPA_AUTH_ALG_{OPEN,SHARED,LEAP} */
--- a/src/drivers/driver.h
+++ b/src/drivers/driver.h
@@ -1305,6 +1305,7 @@ struct wpa_driver_ops {
const char *ifname, const u8 *addr);
int (*set_sta_vlan)(void *priv, const u8 *addr, const char *ifname,
int vlan_id);
+ int (*set_wds_sta)(void *priv, const u8 *addr, int aid, int val);
/**
* commit - Optional commit changes handler
* @priv: driver private data
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -2755,7 +2755,7 @@ static void nl80211_remove_iface(struct
static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
const char *ifname,
enum nl80211_iftype iftype,
- const u8 *addr)
+ const u8 *addr, int wds)
{
struct nl_msg *msg, *flags = NULL;
int ifidx;
@@ -2786,6 +2786,8 @@ static int nl80211_create_iface_once(str
if (err)
goto nla_put_failure;
+ } else if (wds) {
+ NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
}
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
@@ -2816,11 +2818,11 @@ static int nl80211_create_iface_once(str
}
static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
const char *ifname, enum nl80211_iftype iftype,
- const u8 *addr)
+ const u8 *addr, int wds)
{
int ret;
- ret = nl80211_create_iface_once(drv, ifname, iftype, addr);
+ ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
/* if error occured and interface exists already */
if (ret == -ENFILE && if_nametoindex(ifname)) {
@@ -2830,7 +2832,7 @@ static int nl80211_create_iface(struct w
nl80211_remove_iface(drv, if_nametoindex(ifname));
/* Try to create the interface again */
- ret = nl80211_create_iface_once(drv, ifname, iftype, addr);
+ ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
}
return ret;
@@ -3055,7 +3057,7 @@ static struct sock_filter msock_filter_i
#if 0
/*
- * drop non-data frames, WDS frames
+ * drop non-data frames
*/
/* load the lower byte of the frame control field */
BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
@@ -3063,13 +3065,13 @@ static struct sock_filter msock_filter_i
BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
/* drop non-data frames */
BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
+#endif
/* load the upper byte of the frame control field */
- BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
+ BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1),
/* mask off toDS/fromDS */
BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
- /* drop WDS frames */
- BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, FAIL, 0),
-#endif
+ /* accept WDS frames */
+ BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, PASS, 0),
/*
* add header length to index
@@ -3175,7 +3177,7 @@ nl80211_create_monitor_interface(struct
buf[IFNAMSIZ - 1] = '\0';
drv->monitor_ifidx =
- nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL);
+ nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL, 0);
if (drv->monitor_ifidx < 0)
return -1;
@@ -4155,7 +4157,7 @@ static int i802_bss_add(void *priv, cons
if (bss == NULL)
return -1;
- ifidx = nl80211_create_iface(priv, ifname, NL80211_IFTYPE_AP, bssid);
+ ifidx = nl80211_create_iface(priv, ifname, NL80211_IFTYPE_AP, bssid, 0);
if (ifidx < 0) {
os_free(bss);
return -1;
@@ -4264,7 +4266,7 @@ static int i802_if_add(const char *iface
enum hostapd_driver_if_type type, char *ifname,
const u8 *addr)
{
- if (nl80211_create_iface(priv, ifname, i802_if_type(type), addr) < 0)
+ if (nl80211_create_iface(priv, ifname, i802_if_type(type), addr, 0) < 0)
return -1;
return 0;
}
@@ -4310,6 +4312,22 @@ static int i802_set_sta_vlan(void *priv,
return -ENOBUFS;
}
+static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ char name[16];
+
+ sprintf(name, "%s.sta%d", drv->ifname, aid);
+ if (val) {
+ if (nl80211_create_iface(priv, name, NL80211_IFTYPE_AP_VLAN, NULL, 1) < 0)
+ return -1;
+ hostapd_set_iface_flags(drv, name, 1);
+ return i802_set_sta_vlan(priv, addr, name, 0);
+ } else {
+ i802_set_sta_vlan(priv, addr, drv->ifname, 0);
+ return i802_if_remove(priv, HOSTAPD_IF_VLAN, name, NULL);
+ }
+}
static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
{
@@ -4536,5 +4554,6 @@ const struct wpa_driver_ops wpa_driver_n
.if_update = i802_if_update,
.if_remove = i802_if_remove,
.set_sta_vlan = i802_set_sta_vlan,
+ .set_wds_sta = i802_set_wds_sta,
#endif /* HOSTAPD */
};
--- a/hostapd/driver_i.h
+++ b/hostapd/driver_i.h
@@ -453,6 +453,14 @@ hostapd_set_sta_vlan(const char *ifname,
}
static inline int
+hostapd_set_wds_sta(struct hostapd_data *hapd, const u8 *addr, int aid, int val)
+{
+ if (hapd->driver == NULL || hapd->driver->set_wds_sta == NULL)
+ return 0;
+ return hapd->driver->set_wds_sta(hapd->drv_priv, addr, aid, val);
+}
+
+static inline int
hostapd_driver_commit(struct hostapd_data *hapd)
{
if (hapd->driver == NULL || hapd->driver->commit == NULL)
--- a/hostapd/drv_callbacks.c
+++ b/hostapd/drv_callbacks.c
@@ -167,6 +167,7 @@ static const u8 * get_hdr_bssid(const st
if (len < 24)
return NULL;
switch (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) {
+ case WLAN_FC_FROMDS|WLAN_FC_TODS:
case WLAN_FC_TODS:
return hdr->addr1;
case WLAN_FC_FROMDS:
@@ -213,6 +214,7 @@ void hostapd_rx_from_unknown_sta(struct
{
struct sta_info *sta;
const u8 *addr;
+ u16 fc = le_to_host16(hdr->frame_control);
hapd = get_hapd_bssid(hapd->iface, get_hdr_bssid(hdr, len));
if (hapd == NULL || hapd == HAPD_BROADCAST)
@@ -231,6 +233,14 @@ void hostapd_rx_from_unknown_sta(struct
hostapd_sta_deauth(
hapd, addr,
WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
+ } else {
+ if (!sta->wds_sta) {
+ if ((fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) ==
+ (WLAN_FC_TODS | WLAN_FC_FROMDS)) {
+ sta->wds_sta = 1;
+ hostapd_set_wds_sta(hapd, addr, sta->aid, 1);
+ }
+ }
}
}
--- a/hostapd/sta_info.c
+++ b/hostapd/sta_info.c
@@ -120,6 +120,7 @@ void ap_free_sta(struct hostapd_data *ha
accounting_sta_stop(hapd, sta);
+ hostapd_set_wds_sta(hapd, sta->addr, sta->aid, 0);
if (!ap_sta_in_other_bss(hapd, sta, WLAN_STA_ASSOC) &&
!(sta->flags & WLAN_STA_PREAUTH))
hostapd_sta_remove(hapd, sta->addr);
--- a/hostapd/sta_info.h
+++ b/hostapd/sta_info.h
@@ -78,6 +78,7 @@ struct sta_info {
struct hostapd_ssid *ssid_probe; /* SSID selection based on ProbeReq */
int vlan_id;
+ int wds_sta;
#ifdef CONFIG_IEEE80211N
struct ht_cap_ie ht_capabilities; /* IEEE 802.11n capabilities */
--- a/src/common/nl80211_copy.h
+++ b/src/common/nl80211_copy.h
@@ -584,6 +584,8 @@ enum nl80211_commands {
* changed then the list changed and the dump should be repeated
* completely from scratch.
*
+ * @NL80211_ATTR_4ADDR: Use 4-address frames on a virtual interface
+ *
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
*/
@@ -714,6 +716,8 @@ enum nl80211_attrs {
NL80211_ATTR_PID,
+ NL80211_ATTR_4ADDR,
+
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
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