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Add shared per-radio structure for wpa_supplicant

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struct wpa_radio is used as a shared data structure between all struct
wpa_supplicant instances that share the same physical radio.

Signed-hostap: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2013-11-24 19:53:19 +02:00
parent 73c00fd794
commit 202dec2a94
2 changed files with 80 additions and 1 deletions
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66
wpa_supplicant/wpa_supplicant.c
View File

@ -2872,10 +2872,61 @@ int wpas_init_ext_pw(struct wpa_supplicant *wpa_s)
}
static struct wpa_radio * radio_add_interface(struct wpa_supplicant *wpa_s,
const char *rn)
{
struct wpa_supplicant *iface = wpa_s->global->ifaces;
struct wpa_radio *radio;
while (rn && iface) {
radio = iface->radio;
if (radio && os_strcmp(rn, radio->name) == 0) {
wpa_printf(MSG_DEBUG, "Add interface %s to existing radio %s",
wpa_s->ifname, rn);
dl_list_add(&radio->ifaces, &wpa_s->radio_list);
return radio;
}
}
wpa_printf(MSG_DEBUG, "Add interface %s to a new radio %s",
wpa_s->ifname, rn ? rn : "N/A");
radio = os_zalloc(sizeof(*radio));
if (radio == NULL)
return NULL;
if (rn)
os_strlcpy(radio->name, rn, sizeof(radio->name));
dl_list_init(&radio->ifaces);
dl_list_add(&radio->ifaces, &wpa_s->radio_list);
return radio;
}
static void radio_remove_interface(struct wpa_supplicant *wpa_s)
{
struct wpa_radio *radio = wpa_s->radio;
if (!radio)
return;
wpa_printf(MSG_DEBUG, "Remove interface %s from radio %s",
wpa_s->ifname, radio->name);
dl_list_del(&wpa_s->radio_list);
wpa_s->radio = NULL;
if (!dl_list_empty(&radio->ifaces))
return; /* Interfaces remain for this radio */
wpa_printf(MSG_DEBUG, "Remove radio %s", radio->name);
os_free(radio);
}
static int wpas_init_driver(struct wpa_supplicant *wpa_s,
struct wpa_interface *iface)
{
const char *ifname, *driver;
const char *ifname, *driver, *rn;
driver = iface->driver;
next_driver:
@ -2909,6 +2960,17 @@ next_driver:
os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
}
if (wpa_s->driver->get_radio_name)
rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
else
rn = NULL;
if (rn && rn[0] == '\0')
rn = NULL;
wpa_s->radio = radio_add_interface(wpa_s, rn);
if (wpa_s->radio == NULL)
return -1;
return 0;
}
@ -3180,6 +3242,8 @@ static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s,
}
#endif /* CONFIG_P2P */
radio_remove_interface(wpa_s);
if (wpa_s->drv_priv)
wpa_drv_deinit(wpa_s);

15
wpa_supplicant/wpa_supplicant_i.h
View File

@ -270,6 +270,19 @@ struct wpa_global {
};
/**
* struct wpa_radio - Internal data for per-radio information
*
* This structure is used to share data about configured interfaces
* (struct wpa_supplicant) that share the same physical radio, e.g., to allow
* better coordination of offchannel operations.
*/
struct wpa_radio {
char name[16]; /* from driver_ops get_radio_name() or empty if not
* available */
struct dl_list ifaces; /* struct wpa_supplicant::radio_list entries */
};
/**
* offchannel_send_action_result - Result of offchannel send Action frame
*/
@ -307,6 +320,8 @@ struct wpa_ssid_value {
*/
struct wpa_supplicant {
struct wpa_global *global;
struct wpa_radio *radio; /* shared radio context */
struct dl_list radio_list; /* list head: struct wpa_radio::ifaces */
struct wpa_supplicant *parent;
struct wpa_supplicant *next;
struct l2_packet_data *l2;