From c8909e5a275bfb57dc525d6551ed572e118e2eea Mon Sep 17 00:00:00 2001 From: David Gnedt Date: Tue, 7 Jan 2014 13:10:14 +0100 Subject: [PATCH] wl1251: enable tx path in monitor mode if necessary for packet injection MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Pali Rohár Signed-off-by: Pavel Machek Signed-off-by: John W. Linville --- drivers/net/wireless/ti/wl1251/main.c | 5 +++++ drivers/net/wireless/ti/wl1251/tx.c | 25 +++++++++++++++++++++++++ drivers/net/wireless/ti/wl1251/wl1251.h | 1 + 3 files changed, 31 insertions(+) diff --git a/drivers/net/wireless/ti/wl1251/main.c b/drivers/net/wireless/ti/wl1251/main.c index 855026a34e45..5a265a24f1fe 100644 --- a/drivers/net/wireless/ti/wl1251/main.c +++ b/drivers/net/wireless/ti/wl1251/main.c @@ -486,6 +486,7 @@ 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); @@ -545,6 +546,7 @@ 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); } @@ -623,6 +625,7 @@ 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, @@ -1507,7 +1510,9 @@ 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 466cd25c022b..b91ea24bcedb 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) { @@ -277,6 +278,26 @@ static void wl1251_tx_trigger(struct wl1251 *wl) TX_STATUS_DATA_OUT_COUNT_MASK; } +static void enable_tx_for_packet_injection(struct wl1251 *wl) +{ + int ret; + + ret = wl1251_cmd_join(wl, BSS_TYPE_STA_BSS, wl->channel, + wl->beacon_int, wl->dtim_period); + if (ret < 0) { + wl1251_warning("join failed"); + return; + } + + ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100); + if (ret < 0) { + wl1251_warning("join timeout"); + return; + } + + wl->joined = true; +} + /* caller must hold wl->mutex */ static int wl1251_tx_frame(struct wl1251 *wl, struct sk_buff *skb) { @@ -298,6 +319,10 @@ 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) + enable_tx_for_packet_injection(wl); + 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 e231cdc44fc5..235617a7716d 100644 --- a/drivers/net/wireless/ti/wl1251/wl1251.h +++ b/drivers/net/wireless/ti/wl1251/wl1251.h @@ -305,6 +305,7 @@ struct wl1251 { u8 listen_int; int channel; bool monitor_present; + bool joined; void *target_mem_map; struct acx_data_path_params_resp *data_path; -- 2.39.5