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P2P: Skip GO Neg Conf ack failure workaround of send failures

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The workaround to ignore no ctrl::ack received for GO Negotiation
Confirmation frame was only supposed to be used when the frame was
actually transmitted and just the ack was not received. However, due
to the way the driver failure on transmitting the frame were reported,
this ended up getting applied for all failures in sending the GO
Negotiation Confirmation frame.

Improve this by providing a mechanism to indicate whether send_action
operations fail locally before the frame was actually transmitted or
because of not receiving ack frame after having transmitted the frame.
This commit is contained in:
Jouni Malinen 2010-10-19 12:47:33 +03:00 committed by Jouni Malinen
parent 2b67a67144
commit 93b7ddd032
5 changed files with 37 additions and 15 deletions
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24
src/p2p/p2p.c
View file

@ -2076,15 +2076,20 @@ static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success)
}
static void p2p_go_neg_conf_cb(struct p2p_data *p2p, int success)
static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
enum p2p_send_action_result result)
{
struct p2p_device *dev;
wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
"P2P: GO Negotiation Confirm TX callback: success=%d",
success);
"P2P: GO Negotiation Confirm TX callback: result=%d",
result);
p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
if (!success) {
if (result == P2P_SEND_ACTION_FAILED) {
p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
return;
}
if (result == P2P_SEND_ACTION_NO_ACK) {
/*
* It looks like the TX status for GO Negotiation Confirm is
* often showing failure even when the peer has actually
@ -2110,15 +2115,18 @@ static void p2p_go_neg_conf_cb(struct p2p_data *p2p, int success)
void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
const u8 *src, const u8 *bssid, int success)
const u8 *src, const u8 *bssid,
enum p2p_send_action_result result)
{
enum p2p_pending_action_state state;
int success;
wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
"P2P: Action frame TX callback (state=%d freq=%u dst=" MACSTR
" src=" MACSTR " bssid=" MACSTR " success=%d",
" src=" MACSTR " bssid=" MACSTR " result=%d",
p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
MAC2STR(bssid), success);
MAC2STR(bssid), result);
success = result == P2P_SEND_ACTION_SUCCESS;
state = p2p->pending_action_state;
p2p->pending_action_state = P2P_NO_PENDING_ACTION;
switch (state) {
@ -2134,7 +2142,7 @@ void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
p2p_go_neg_resp_failure_cb(p2p, success);
break;
case P2P_PENDING_GO_NEG_CONFIRM:
p2p_go_neg_conf_cb(p2p, success);
p2p_go_neg_conf_cb(p2p, result);
break;
case P2P_PENDING_SD:
p2p_sd_cb(p2p, success);

11
src/p2p/p2p.h
View file

@ -941,6 +941,12 @@ int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
*/
void p2p_scan_res_handled(struct p2p_data *p2p);
enum p2p_send_action_result {
P2P_SEND_ACTION_SUCCESS /* Frame was send and acknowledged */,
P2P_SEND_ACTION_NO_ACK /* Frame was sent, but not acknowledged */,
P2P_SEND_ACTION_FAILED /* Frame was not sent due to a failure */
};
/**
* p2p_send_action_cb - Notify TX status of an Action frame
* @p2p: P2P module context from p2p_init()
@ -948,13 +954,14 @@ void p2p_scan_res_handled(struct p2p_data *p2p);
* @dst: Destination MAC address (Address 1)
* @src: Source MAC address (Address 2)
* @bssid: BSSID (Address 3)
* @success: Whether the transmission succeeded
* @result: Result of the transmission attempt
*
* This function is used to indicate the result of an Action frame transmission
* that was requested with struct p2p_config::send_action() callback.
*/
void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
const u8 *src, const u8 *bssid, int success);
const u8 *src, const u8 *bssid,
enum p2p_send_action_result result);
/**
* p2p_listen_cb - Indicate the start of a requested Listen state

5
wpa_supplicant/events.c
View file

@ -28,6 +28,7 @@
#include "common/wpa_ctrl.h"
#include "eap_peer/eap.h"
#include "ap/hostapd.h"
#include "p2p/p2p.h"
#include "notify.h"
#include "common/ieee802_11_defs.h"
#include "common/ieee802_11_common.h"
@ -1676,7 +1677,9 @@ void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
wpa_s, data->tx_status.dst,
data->tx_status.data,
data->tx_status.data_len,
data->tx_status.ack);
data->tx_status.ack ?
P2P_SEND_ACTION_SUCCESS :
P2P_SEND_ACTION_NO_ACK);
#endif /* CONFIG_P2P */
break;
}

8
wpa_supplicant/p2p_supplicant.c
View file

@ -562,13 +562,15 @@ static void wpas_send_action_cb(void *eloop_ctx, void *timeout_ctx)
wpas_send_action_tx_status(
wpa_s, wpa_s->pending_action_dst,
wpabuf_head(wpa_s->pending_action_tx),
wpabuf_len(wpa_s->pending_action_tx), 0);
wpabuf_len(wpa_s->pending_action_tx),
P2P_SEND_ACTION_FAILED);
}
}
void wpas_send_action_tx_status(struct wpa_supplicant *wpa_s, const u8 *dst,
const u8 *data, size_t data_len, int ack)
const u8 *data, size_t data_len,
enum p2p_send_action_result result)
{
if (wpa_s->global->p2p_disabled)
return;
@ -592,7 +594,7 @@ void wpas_send_action_tx_status(struct wpa_supplicant *wpa_s, const u8 *dst,
wpa_s->pending_action_dst,
wpa_s->pending_action_src,
wpa_s->pending_action_bssid,
ack);
result);
if (wpa_s->pending_pd_before_join &&
(os_memcmp(wpa_s->pending_action_dst, wpa_s->pending_join_dev_addr,

4
wpa_supplicant/p2p_supplicant.h
View file

@ -17,6 +17,7 @@
enum p2p_wps_method;
struct p2p_go_neg_results;
enum p2p_send_action_result;
int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s);
void wpas_p2p_deinit(struct wpa_supplicant *wpa_s);
@ -43,7 +44,8 @@ void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
const char *config_method);
void wpas_send_action_tx_status(struct wpa_supplicant *wpa_s, const u8 *dst,
const u8 *data, size_t data_len, int ack);
const u8 *data, size_t data_len,
enum p2p_send_action_result result);
int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
char *end);
enum p2p_discovery_type;