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P2P: Remove all child interfaces when removing the parent

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This is needed to allow dynamic removal of an interface that adds the
P2P Device interface without leaving behind the management interface
with invalid wpa_s->parent pointer.

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2014-10-20 12:40:29 +03:00
parent eb92d389a8
commit 26fc96e89b
3 changed files with 27 additions and 3 deletions
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2
wpa_supplicant/p2p_supplicant.c
View File

@ -7981,8 +7981,6 @@ void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s) void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
{ {
if (wpa_s == wpa_s->parent)
wpas_p2p_group_remove(wpa_s, "*");
if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) { if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing " wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
"the management interface is being removed"); "the management interface is being removed");

8
wpa_supplicant/p2p_supplicant.h
View File

@ -29,7 +29,6 @@ int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
int pd, int ht40, int vht); int pd, int ht40, int vht);
int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s,
int freq, struct wpa_ssid *ssid); int freq, struct wpa_ssid *ssid);
int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname);
int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group, int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
int freq, int ht40, int vht); int freq, int ht40, int vht);
int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s, int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
@ -170,6 +169,7 @@ int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s);
int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s); int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s);
void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s, void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
struct wps_event_fail *fail); struct wps_event_fail *fail);
int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname);
#else /* CONFIG_P2P */ #else /* CONFIG_P2P */
@ -293,6 +293,12 @@ static inline void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
{ {
} }
static inline int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s,
const char *ifname)
{
return 0;
}
#endif /* CONFIG_P2P */ #endif /* CONFIG_P2P */
#endif /* P2P_SUPPLICANT_H */ #endif /* P2P_SUPPLICANT_H */

20
wpa_supplicant/wpa_supplicant.c
View File

@ -3905,6 +3905,26 @@ static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s,
static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s, static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s,
int notify, int terminate) int notify, int terminate)
{ {
struct wpa_global *global = wpa_s->global;
struct wpa_supplicant *iface, *prev;
if (wpa_s == wpa_s->parent)
wpas_p2p_group_remove(wpa_s, "*");
iface = global->ifaces;
while (iface) {
if (iface == wpa_s || iface->parent != wpa_s) {
iface = iface->next;
continue;
}
wpa_printf(MSG_DEBUG,
"Remove remaining child interface %s from parent %s",
iface->ifname, wpa_s->ifname);
prev = iface;
iface = iface->next;
wpa_supplicant_remove_iface(global, prev, terminate);
}
wpa_s->disconnected = 1; wpa_s->disconnected = 1;
if (wpa_s->drv_priv) { if (wpa_s->drv_priv) {
wpa_supplicant_deauthenticate(wpa_s, wpa_supplicant_deauthenticate(wpa_s,