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Subject[PATCH 11/16] wl1251: enable tx path in monitor mode if necessary for packet injection
Date
From: David Gnedt <david.gnedt@davizone.at>

If necessary enable the tx path in monitor mode for packet injection using
the JOIN command with BSS_TYPE_STA_BSS and zero BSSID.

Signed-off-by: David Gnedt <david.gnedt@davizone.at>
---
drivers/net/wireless/ti/wl1251/main.c | 5 +++++
drivers/net/wireless/ti/wl1251/tx.c | 17 +++++++++++++++++
drivers/net/wireless/ti/wl1251/wl1251.h | 1 +
3 files changed, 23 insertions(+)

diff --git a/drivers/net/wireless/ti/wl1251/main.c b/drivers/net/wireless/ti/wl1251/main.c
index 7e6b6d1..174f403 100644
--- a/drivers/net/wireless/ti/wl1251/main.c
+++ b/drivers/net/wireless/ti/wl1251/main.c
@@ -487,6 +487,7 @@ static void wl1251_op_stop(struct ieee80211_hw *hw)
wl->rssi_thold = 0;
wl->channel = WL1251_DEFAULT_CHANNEL;
wl->monitor_present = false;
+ wl->joined = false;

wl1251_debugfs_reset(wl);

@@ -546,6 +547,7 @@ static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
mutex_lock(&wl->mutex);
wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
wl->vif = NULL;
+ memset(wl->bssid, 0, ETH_ALEN);
mutex_unlock(&wl->mutex);
}

@@ -619,6 +621,7 @@ static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
* at firmware level.
*/
if (wl->vif == NULL) {
+ wl->joined = false;
ret = wl1251_cmd_data_path_rx(wl, wl->channel, 1);
} else {
ret = wl1251_join(wl, wl->bss_type, wl->channel,
@@ -1610,7 +1613,9 @@ struct ieee80211_hw *wl1251_alloc_hw(void)
INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
wl->channel = WL1251_DEFAULT_CHANNEL;
wl->monitor_present = false;
+ wl->joined = false;
wl->scanning = false;
+ wl->bss_type = MAX_BSS_TYPE;
wl->default_key = 0;
wl->listen_int = 1;
wl->rx_counter = 0;
diff --git a/drivers/net/wireless/ti/wl1251/tx.c b/drivers/net/wireless/ti/wl1251/tx.c
index 3cc82fd..1de4ccb 100644
--- a/drivers/net/wireless/ti/wl1251/tx.c
+++ b/drivers/net/wireless/ti/wl1251/tx.c
@@ -28,6 +28,7 @@
#include "tx.h"
#include "ps.h"
#include "io.h"
+#include "event.h"

static bool wl1251_tx_double_buffer_busy(struct wl1251 *wl, u32 data_out_count)
{
@@ -298,6 +299,22 @@ static int wl1251_tx_frame(struct wl1251 *wl, struct sk_buff *skb)
}
}

+ /* Enable tx path in monitor mode for packet injection */
+ if ((wl->vif == NULL) && !wl->joined) {
+ ret = wl1251_cmd_join(wl, BSS_TYPE_STA_BSS, wl->channel,
+ wl->beacon_int, wl->dtim_period);
+ if (ret < 0)
+ wl1251_warning("join failed");
+ else {
+ ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID,
+ 100);
+ if (ret < 0)
+ wl1251_warning("join timeout");
+ else
+ wl->joined = true;
+ }
+ }
+
ret = wl1251_tx_path_status(wl);
if (ret < 0)
return ret;
diff --git a/drivers/net/wireless/ti/wl1251/wl1251.h b/drivers/net/wireless/ti/wl1251/wl1251.h
index e478e61..1bdf779 100644
--- a/drivers/net/wireless/ti/wl1251/wl1251.h
+++ b/drivers/net/wireless/ti/wl1251/wl1251.h
@@ -311,6 +311,7 @@ struct wl1251 {
u8 listen_int;
int channel;
bool monitor_present;
+ bool joined;

void *target_mem_map;
struct acx_data_path_params_resp *data_path;
--
1.7.10.4


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