#include "common/wpa_ctrl.h"
#include "rsn_supp/wpa.h"
#include "wpa_supplicant_i.h"
+#include "config.h"
#include "driver_i.h"
#include "offchannel.h"
#include "gas_query.h"
/** GAS query timeout in seconds */
#define GAS_QUERY_TIMEOUT_PERIOD 2
+/* GAS query wait-time / duration in ms */
+#define GAS_QUERY_WAIT_TIME_INITIAL 1000
+#define GAS_QUERY_WAIT_TIME_COMEBACK 150
/**
* struct gas_query_pending - Pending GAS query
u8 next_frag_id;
unsigned int wait_comeback:1;
unsigned int offchannel_tx_started:1;
+ unsigned int retry:1;
int freq;
u16 status_code;
struct wpabuf *req;
static void gas_query_tx_comeback_timeout(void *eloop_data, void *user_ctx);
static void gas_query_timeout(void *eloop_data, void *user_ctx);
+static void gas_query_rx_comeback_timeout(void *eloop_data, void *user_ctx);
+static void gas_query_tx_initial_req(struct gas_query *gas,
+ struct gas_query_pending *query);
+static int gas_query_new_dialog_token(struct gas_query *gas, const u8 *dst);
static int ms_from_time(struct os_reltime *last)
return "PEER_ERROR";
case GAS_QUERY_INTERNAL_ERROR:
return "INTERNAL_ERROR";
- case GAS_QUERY_CANCELLED:
- return "CANCELLED";
case GAS_QUERY_DELETED_AT_DEINIT:
return "DELETED_AT_DEINIT";
}
offchannel_send_action_done(gas->wpa_s);
eloop_cancel_timeout(gas_query_tx_comeback_timeout, gas, query);
eloop_cancel_timeout(gas_query_timeout, gas, query);
+ eloop_cancel_timeout(gas_query_rx_comeback_timeout, gas, query);
dl_list_del(&query->list);
query->cb(query->ctx, query->addr, query->dialog_token, result,
query->adv_proto, query->resp, query->status_code);
eloop_cancel_timeout(gas_query_timeout, gas, query);
eloop_register_timeout(GAS_QUERY_TIMEOUT_PERIOD, 0,
gas_query_timeout, gas, query);
+ if (query->wait_comeback && !query->retry) {
+ eloop_cancel_timeout(gas_query_rx_comeback_timeout,
+ gas, query);
+ eloop_register_timeout(
+ 0, (GAS_QUERY_WAIT_TIME_COMEBACK + 10) * 1000,
+ gas_query_rx_comeback_timeout, gas, query);
+ }
}
if (result == OFFCHANNEL_SEND_ACTION_FAILED) {
eloop_cancel_timeout(gas_query_timeout, gas, query);
static int gas_query_tx(struct gas_query *gas, struct gas_query_pending *query,
- struct wpabuf *req)
+ struct wpabuf *req, unsigned int wait_time)
{
- unsigned int wait_time;
int res, prot = pmf_in_use(gas->wpa_s, query->addr);
+ const u8 *bssid;
+ const u8 wildcard_bssid[ETH_ALEN] = {
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+ };
wpa_printf(MSG_DEBUG, "GAS: Send action frame to " MACSTR " len=%u "
"freq=%d prot=%d", MAC2STR(query->addr),
*categ = WLAN_ACTION_PROTECTED_DUAL;
}
os_get_reltime(&query->last_oper);
- wait_time = 1000;
if (gas->wpa_s->max_remain_on_chan &&
wait_time > gas->wpa_s->max_remain_on_chan)
wait_time = gas->wpa_s->max_remain_on_chan;
+ if (!gas->wpa_s->conf->gas_address3 ||
+ (gas->wpa_s->current_ssid &&
+ gas->wpa_s->wpa_state >= WPA_ASSOCIATED &&
+ os_memcmp(query->addr, gas->wpa_s->bssid, ETH_ALEN) == 0))
+ bssid = query->addr;
+ else
+ bssid = wildcard_bssid;
res = offchannel_send_action(gas->wpa_s, query->freq, query->addr,
- gas->wpa_s->own_addr, query->addr,
+ gas->wpa_s->own_addr, bssid,
wpabuf_head(req), wpabuf_len(req),
wait_time, gas_query_tx_status, 0);
if (res == 0)
struct gas_query_pending *query)
{
struct wpabuf *req;
+ unsigned int wait_time;
req = gas_build_comeback_req(query->dialog_token);
if (req == NULL) {
return;
}
- if (gas_query_tx(gas, query, req) < 0) {
+ wait_time = (query->retry || !query->offchannel_tx_started) ?
+ GAS_QUERY_WAIT_TIME_INITIAL : GAS_QUERY_WAIT_TIME_COMEBACK;
+
+ if (gas_query_tx(gas, query, req, wait_time) < 0) {
wpa_printf(MSG_DEBUG, "GAS: Failed to send Action frame to "
MACSTR, MAC2STR(query->addr));
gas_query_done(gas, query, GAS_QUERY_INTERNAL_ERROR);
}
+static void gas_query_rx_comeback_timeout(void *eloop_data, void *user_ctx)
+{
+ struct gas_query *gas = eloop_data;
+ struct gas_query_pending *query = user_ctx;
+ int dialog_token;
+
+ wpa_printf(MSG_DEBUG,
+ "GAS: No response to comeback request received (retry=%u)",
+ query->retry);
+ if (gas->current != query || query->retry)
+ return;
+ dialog_token = gas_query_new_dialog_token(gas, query->addr);
+ if (dialog_token < 0)
+ return;
+ wpa_printf(MSG_DEBUG,
+ "GAS: Retry GAS query due to comeback response timeout");
+ query->retry = 1;
+ query->dialog_token = dialog_token;
+ *(wpabuf_mhead_u8(query->req) + 2) = dialog_token;
+ query->wait_comeback = 0;
+ query->next_frag_id = 0;
+ wpabuf_free(query->adv_proto);
+ query->adv_proto = NULL;
+ eloop_cancel_timeout(gas_query_tx_comeback_timeout, gas, query);
+ eloop_cancel_timeout(gas_query_timeout, gas, query);
+ gas_query_tx_initial_req(gas, query);
+}
+
+
static void gas_query_tx_comeback_timeout(void *eloop_data, void *user_ctx)
{
struct gas_query *gas = eloop_data;
{
unsigned int secs, usecs;
+ if (comeback_delay > 1 && query->offchannel_tx_started) {
+ offchannel_send_action_done(gas->wpa_s);
+ query->offchannel_tx_started = 0;
+ }
+
secs = (comeback_delay * 1024) / 1000000;
usecs = comeback_delay * 1024 - secs * 1000000;
wpa_printf(MSG_DEBUG, "GAS: Send comeback request to " MACSTR
"comeback_delay=%u)",
MAC2STR(query->addr), query->dialog_token, frag_id,
more_frags, comeback_delay);
+ eloop_cancel_timeout(gas_query_rx_comeback_timeout, gas, query);
if ((size_t) 2 + adv_proto[1] != wpabuf_len(query->adv_proto) ||
os_memcmp(adv_proto, wpabuf_head(query->adv_proto),
if (gas == NULL || len < 4)
return -1;
+ pos = data;
+ action = *pos++;
+ dialog_token = *pos++;
+
+ if (action != WLAN_PA_GAS_INITIAL_RESP &&
+ action != WLAN_PA_GAS_COMEBACK_RESP)
+ return -1; /* Not a GAS response */
+
prot = categ == WLAN_ACTION_PROTECTED_DUAL;
- pmf = pmf_in_use(gas->wpa_s, bssid);
+ pmf = pmf_in_use(gas->wpa_s, sa);
if (prot && !pmf) {
wpa_printf(MSG_DEBUG, "GAS: Drop unexpected protected GAS frame when PMF is disabled");
return 0;
return 0;
}
- pos = data;
- action = *pos++;
- dialog_token = *pos++;
-
- if (action != WLAN_PA_GAS_INITIAL_RESP &&
- action != WLAN_PA_GAS_COMEBACK_RESP)
- return -1; /* Not a GAS response */
-
query = gas_query_get_pending(gas, sa, dialog_token);
if (query == NULL) {
wpa_printf(MSG_DEBUG, "GAS: No pending query found for " MACSTR
}
gas->work = work;
+ gas_query_tx_initial_req(gas, query);
+}
- if (gas_query_tx(gas, query, query->req) < 0) {
+
+static void gas_query_tx_initial_req(struct gas_query *gas,
+ struct gas_query_pending *query)
+{
+ if (gas_query_tx(gas, query, query->req,
+ GAS_QUERY_WAIT_TIME_INITIAL) < 0) {
wpa_printf(MSG_DEBUG, "GAS: Failed to send Action frame to "
MACSTR, MAC2STR(query->addr));
- gas_query_free(query, 1);
+ gas_query_done(gas, query, GAS_QUERY_INTERNAL_ERROR);
return;
}
gas->current = query;
query->dialog_token);
eloop_register_timeout(GAS_QUERY_TIMEOUT_PERIOD, 0,
gas_query_timeout, gas, query);
+}
+
+
+static int gas_query_new_dialog_token(struct gas_query *gas, const u8 *dst)
+{
+ static int next_start = 0;
+ int dialog_token;
+ for (dialog_token = 0; dialog_token < 256; dialog_token++) {
+ if (gas_query_dialog_token_available(
+ gas, dst, (next_start + dialog_token) % 256))
+ break;
+ }
+ if (dialog_token == 256)
+ return -1; /* Too many pending queries */
+ dialog_token = (next_start + dialog_token) % 256;
+ next_start = (dialog_token + 1) % 256;
+ return dialog_token;
}
{
struct gas_query_pending *query;
int dialog_token;
- static int next_start = 0;
if (wpabuf_len(req) < 3)
return -1;
- for (dialog_token = 0; dialog_token < 256; dialog_token++) {
- if (gas_query_dialog_token_available(
- gas, dst, (next_start + dialog_token) % 256))
- break;
- }
- if (dialog_token == 256)
- return -1; /* Too many pending queries */
- dialog_token = (next_start + dialog_token) % 256;
- next_start = (dialog_token + 1) % 256;
+ dialog_token = gas_query_new_dialog_token(gas, dst);
+ if (dialog_token < 0)
+ return -1;
query = os_zalloc(sizeof(*query));
if (query == NULL)
if (radio_add_work(gas->wpa_s, freq, "gas-query", 0, gas_query_start_cb,
query) < 0) {
+ query->req = NULL; /* caller will free this in error case */
gas_query_free(query, 1);
return -1;
}
return dialog_token;
}
-
-
-/**
- * gas_query_cancel - Cancel a pending GAS query
- * @gas: GAS query data from gas_query_init()
- * @dst: Destination MAC address for the query
- * @dialog_token: Dialog token from gas_query_req()
- */
-void gas_query_cancel(struct gas_query *gas, const u8 *dst, u8 dialog_token)
-{
- struct gas_query_pending *query;
-
- query = gas_query_get_pending(gas, dst, dialog_token);
- if (query)
- gas_query_done(gas, query, GAS_QUERY_CANCELLED);
-
-}
projects / mech_eap.git / blobdiff