* Copyright (c) 2009-2010, Atheros Communications
* Copyright (c) 2011, Qualcomm Atheros
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Alternatively, this software may be distributed under the terms of BSD
- * license.
- *
- * See README and COPYING for more details.
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
*/
#include "includes.h"
#include "common.h"
#include "utils/eloop.h"
#include "wpa_supplicant_i.h"
+#include "p2p_supplicant.h"
#include "driver_i.h"
#include "offchannel.h"
{
struct wpa_supplicant *iface;
- if (os_memcmp(src, wpa_s->own_addr, ETH_ALEN) == 0)
+ if (os_memcmp(src, wpa_s->own_addr, ETH_ALEN) == 0) {
+#ifdef CONFIG_P2P
+ if (wpa_s->p2p_mgmt && wpa_s != wpa_s->parent &&
+ wpa_s->parent->ap_iface &&
+ os_memcmp(wpa_s->parent->own_addr,
+ wpa_s->own_addr, ETH_ALEN) == 0 &&
+ wpabuf_len(wpa_s->pending_action_tx) >= 2 &&
+ *wpabuf_head_u8(wpa_s->pending_action_tx) !=
+ WLAN_ACTION_PUBLIC) {
+ /*
+ * When P2P Device interface has same MAC address as
+ * the GO interface, make sure non-Public Action frames
+ * are sent through the GO interface. The P2P Device
+ * interface can only send Public Action frames.
+ */
+ wpa_printf(MSG_DEBUG,
+ "P2P: Use GO interface %s instead of interface %s for Action TX",
+ wpa_s->parent->ifname, wpa_s->ifname);
+ return wpa_s->parent;
+ }
+#endif /* CONFIG_P2P */
return wpa_s;
+ }
/*
* Try to find a group interface that matches with the source address.
*/
iface = wpa_s->global->ifaces;
while (iface) {
- if (os_memcmp(wpa_s->pending_action_src,
- iface->own_addr, ETH_ALEN) == 0)
+ if (os_memcmp(src, iface->own_addr, ETH_ALEN) == 0)
break;
iface = iface->next;
}
without_roc = wpa_s->pending_action_without_roc;
wpa_s->pending_action_without_roc = 0;
- wpa_printf(MSG_DEBUG, "Off-channel: Send Action callback "
- "(without_roc=%d pending_action_tx=%p)",
- without_roc, wpa_s->pending_action_tx);
+ wpa_printf(MSG_DEBUG,
+ "Off-channel: Send Action callback (without_roc=%d pending_action_tx=%p pending_action_tx_done=%d)",
+ without_roc, wpa_s->pending_action_tx,
+ !!wpa_s->pending_action_tx_done);
- if (wpa_s->pending_action_tx == NULL)
+ if (wpa_s->pending_action_tx == NULL || wpa_s->pending_action_tx_done)
return;
/*
wpa_s->off_channel_freq,
iface->assoc_freq);
if (without_roc && wpa_s->off_channel_freq == 0) {
+ unsigned int duration = 200;
/*
* We may get here if wpas_send_action() found us to be
* on the correct channel, but remain-on-channel cancel
*/
wpa_printf(MSG_DEBUG, "Off-channel: Schedule "
"remain-on-channel to send Action frame");
+#ifdef CONFIG_TESTING_OPTIONS
+ if (wpa_s->extra_roc_dur) {
+ wpa_printf(MSG_DEBUG,
+ "TESTING: Increase ROC duration %u -> %u",
+ duration,
+ duration + wpa_s->extra_roc_dur);
+ duration += wpa_s->extra_roc_dur;
+ }
+#endif /* CONFIG_TESTING_OPTIONS */
if (wpa_drv_remain_on_channel(
- wpa_s, wpa_s->pending_action_freq, 200) <
- 0) {
+ wpa_s, wpa_s->pending_action_freq,
+ duration) < 0) {
wpa_printf(MSG_DEBUG, "Off-channel: Failed to "
"request driver to remain on "
"channel (%u MHz) for Action Frame "
}
wpa_printf(MSG_DEBUG, "Off-channel: Sending pending Action frame to "
- MACSTR " using interface %s",
- MAC2STR(wpa_s->pending_action_dst), iface->ifname);
+ MACSTR " using interface %s (pending_action_tx=%p)",
+ MAC2STR(wpa_s->pending_action_dst), iface->ifname,
+ wpa_s->pending_action_tx);
res = wpa_drv_send_action(iface, wpa_s->pending_action_freq, 0,
wpa_s->pending_action_dst,
wpa_s->pending_action_src,
}
+/**
+ * offchannel_send_action_tx_status - TX status callback
+ * @wpa_s: Pointer to wpa_supplicant data
+ * @dst: Destination MAC address of the transmitted Action frame
+ * @data: Transmitted frame payload
+ * @data_len: Length of @data in bytes
+ * @result: TX status
+ *
+ * This function is called whenever the driver indicates a TX status event for
+ * a frame sent by offchannel_send_action() using wpa_drv_send_action().
+ */
void offchannel_send_action_tx_status(
struct wpa_supplicant *wpa_s, const u8 *dst, const u8 *data,
size_t data_len, enum offchannel_send_action_result result)
return;
}
+ /* Accept report only if the contents of the frame matches */
+ if (data_len - wpabuf_len(wpa_s->pending_action_tx) != 24 ||
+ os_memcmp(data + 24, wpabuf_head(wpa_s->pending_action_tx),
+ wpabuf_len(wpa_s->pending_action_tx)) != 0) {
+ wpa_printf(MSG_DEBUG, "Off-channel: Ignore Action TX status - "
+ "mismatching contents with pending frame");
+ wpa_hexdump(MSG_MSGDUMP, "TX status frame data",
+ data, data_len);
+ wpa_hexdump_buf(MSG_MSGDUMP, "Pending TX frame",
+ wpa_s->pending_action_tx);
+ return;
+ }
+
+ wpa_printf(MSG_DEBUG,
+ "Off-channel: Delete matching pending action frame (dst="
+ MACSTR " pending_action_tx=%p)", MAC2STR(dst),
+ wpa_s->pending_action_tx);
+ wpa_hexdump_buf(MSG_MSGDUMP, "Pending TX frame",
+ wpa_s->pending_action_tx);
wpabuf_free(wpa_s->pending_action_tx);
wpa_s->pending_action_tx = NULL;
wpa_s->pending_action_bssid,
data, data_len, result);
}
+
+#ifdef CONFIG_P2P
+ if (wpa_s->p2p_long_listen > 0) {
+ /* Continue the listen */
+ wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
+ wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
+ }
+#endif /* CONFIG_P2P */
}
+/**
+ * offchannel_send_action - Request off-channel Action frame TX
+ * @wpa_s: Pointer to wpa_supplicant data
+ * @freq: The frequency in MHz indicating the channel on which the frame is to
+ * transmitted or 0 for the current channel (only if associated)
+ * @dst: Action frame destination MAC address
+ * @src: Action frame source MAC address
+ * @bssid: Action frame BSSID
+ * @buf: Frame to transmit starting from the Category field
+ * @len: Length of @buf in bytes
+ * @wait_time: Wait time for response in milliseconds
+ * @tx_cb: Callback function for indicating TX status or %NULL for now callback
+ * @no_cck: Whether CCK rates are to be disallowed for TX rate selection
+ * Returns: 0 on success or -1 on failure
+ *
+ * This function is used to request an Action frame to be transmitted on the
+ * current operating channel or on another channel (off-channel). The actual
+ * frame transmission will be delayed until the driver is ready on the specified
+ * channel. The @wait_time parameter can be used to request the driver to remain
+ * awake on the channel to wait for a response.
+ */
int offchannel_send_action(struct wpa_supplicant *wpa_s, unsigned int freq,
const u8 *dst, const u8 *src, const u8 *bssid,
const u8 *buf, size_t len, unsigned int wait_time,
if (wpa_s->pending_action_tx) {
wpa_printf(MSG_DEBUG, "Off-channel: Dropped pending Action "
- "frame TX to " MACSTR,
- MAC2STR(wpa_s->pending_action_dst));
+ "frame TX to " MACSTR " (pending_action_tx=%p)",
+ MAC2STR(wpa_s->pending_action_dst),
+ wpa_s->pending_action_tx);
+ wpa_hexdump_buf(MSG_MSGDUMP, "Pending TX frame",
+ wpa_s->pending_action_tx);
wpabuf_free(wpa_s->pending_action_tx);
}
+ wpa_s->pending_action_tx_done = 0;
wpa_s->pending_action_tx = wpabuf_alloc(len);
if (wpa_s->pending_action_tx == NULL) {
wpa_printf(MSG_DEBUG, "Off-channel: Failed to allocate Action "
os_memcpy(wpa_s->pending_action_bssid, bssid, ETH_ALEN);
wpa_s->pending_action_freq = freq;
wpa_s->pending_action_no_cck = no_cck;
+ wpa_printf(MSG_DEBUG,
+ "Off-channel: Stored pending action frame (dst=" MACSTR
+ " pending_action_tx=%p)",
+ MAC2STR(dst), wpa_s->pending_action_tx);
+ wpa_hexdump_buf(MSG_MSGDUMP, "Pending TX frame",
+ wpa_s->pending_action_tx);
if (freq != 0 && wpa_s->drv_flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) {
struct wpa_supplicant *iface;
+ int ret;
- iface = wpas_get_tx_interface(wpa_s,
- wpa_s->pending_action_src);
+ iface = wpas_get_tx_interface(wpa_s, src);
wpa_s->action_tx_wait_time = wait_time;
+ if (wait_time)
+ wpa_s->action_tx_wait_time_used = 1;
- return wpa_drv_send_action(
+ ret = wpa_drv_send_action(
iface, wpa_s->pending_action_freq,
wait_time, wpa_s->pending_action_dst,
wpa_s->pending_action_src, wpa_s->pending_action_bssid,
wpabuf_head(wpa_s->pending_action_tx),
wpabuf_len(wpa_s->pending_action_tx),
wpa_s->pending_action_no_cck);
+ if (ret == 0)
+ wpa_s->pending_action_tx_done = 1;
+ return ret;
}
if (freq) {
"channel");
if (wait_time > wpa_s->max_remain_on_chan)
wait_time = wpa_s->max_remain_on_chan;
+ else if (wait_time == 0)
+ wait_time = 20;
+#ifdef CONFIG_TESTING_OPTIONS
+ if (wpa_s->extra_roc_dur) {
+ wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
+ wait_time, wait_time + wpa_s->extra_roc_dur);
+ wait_time += wpa_s->extra_roc_dur;
+ }
+#endif /* CONFIG_TESTING_OPTIONS */
if (wpa_drv_remain_on_channel(wpa_s, freq, wait_time) < 0) {
wpa_printf(MSG_DEBUG, "Off-channel: Failed to request driver "
"to remain on channel (%u MHz) for Action "
}
+/**
+ * offchannel_send_send_action_done - Notify completion of Action frame sequence
+ * @wpa_s: Pointer to wpa_supplicant data
+ *
+ * This function can be used to cancel a wait for additional response frames on
+ * the channel that was used with offchannel_send_action().
+ */
void offchannel_send_action_done(struct wpa_supplicant *wpa_s)
{
- wpa_printf(MSG_DEBUG, "Off-channel: Action frame sequence done "
- "notification");
+ wpa_printf(MSG_DEBUG,
+ "Off-channel: Action frame sequence done notification: pending_action_tx=%p drv_offchan_tx=%d action_tx_wait_time=%d off_channel_freq=%d roc_waiting_drv_freq=%d",
+ wpa_s->pending_action_tx,
+ !!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX),
+ wpa_s->action_tx_wait_time, wpa_s->off_channel_freq,
+ wpa_s->roc_waiting_drv_freq);
wpabuf_free(wpa_s->pending_action_tx);
wpa_s->pending_action_tx = NULL;
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX &&
- wpa_s->action_tx_wait_time)
+ (wpa_s->action_tx_wait_time || wpa_s->action_tx_wait_time_used))
wpa_drv_send_action_cancel_wait(wpa_s);
-
- if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
+ else if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
wpa_drv_cancel_remain_on_channel(wpa_s);
wpa_s->off_channel_freq = 0;
wpa_s->roc_waiting_drv_freq = 0;
}
+ wpa_s->action_tx_wait_time_used = 0;
}
+/**
+ * offchannel_remain_on_channel_cb - Remain-on-channel callback function
+ * @wpa_s: Pointer to wpa_supplicant data
+ * @freq: Frequency (in MHz) of the selected channel
+ * @duration: Duration of the remain-on-channel operation in milliseconds
+ *
+ * This function is called whenever the driver notifies beginning of a
+ * remain-on-channel operation.
+ */
void offchannel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
unsigned int freq, unsigned int duration)
{
}
+/**
+ * offchannel_cancel_remain_on_channel_cb - Remain-on-channel stopped callback
+ * @wpa_s: Pointer to wpa_supplicant data
+ * @freq: Frequency (in MHz) of the selected channel
+ *
+ * This function is called whenever the driver notifies termination of a
+ * remain-on-channel operation.
+ */
void offchannel_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
unsigned int freq)
{
}
-void offchannel_deinit(struct wpa_supplicant *wpa_s)
+/**
+ * offchannel_pending_action_tx - Check whether there is a pending Action TX
+ * @wpa_s: Pointer to wpa_supplicant data
+ * Returns: Pointer to pending frame or %NULL if no pending operation
+ *
+ * This function can be used to check whether there is a pending Action frame TX
+ * operation. The returned pointer should be used only for checking whether it
+ * is %NULL (no pending frame) or to print the pointer value in debug
+ * information (i.e., the pointer should not be dereferenced).
+ */
+const void * offchannel_pending_action_tx(struct wpa_supplicant *wpa_s)
+{
+ return wpa_s->pending_action_tx;
+}
+
+
+/**
+ * offchannel_clear_pending_action_tx - Clear pending Action frame TX
+ * @wpa_s: Pointer to wpa_supplicant data
+ */
+void offchannel_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
{
+ wpa_printf(MSG_DEBUG,
+ "Off-channel: Clear pending Action frame TX (pending_action_tx=%p",
+ wpa_s->pending_action_tx);
wpabuf_free(wpa_s->pending_action_tx);
wpa_s->pending_action_tx = NULL;
+}
+
+
+/**
+ * offchannel_deinit - Deinit off-channel operations
+ * @wpa_s: Pointer to wpa_supplicant data
+ *
+ * This function is used to free up any allocated resources for off-channel
+ * operations.
+ */
+void offchannel_deinit(struct wpa_supplicant *wpa_s)
+{
+ offchannel_clear_pending_action_tx(wpa_s);
eloop_cancel_timeout(wpas_send_action_cb, wpa_s, NULL);
}