Return-path: Received: from wolverine02.qualcomm.com ([199.106.114.251]:12629 "EHLO wolverine02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751628AbcJ2Fvt (ORCPT ); Sat, 29 Oct 2016 01:51:49 -0400 From: Maya Erez To: Kalle Valo Cc: Maya Erez , linux-wireless@vger.kernel.org, wil6210@qca.qualcomm.com Subject: [PATCH 4/7] wil6210: add support for abort scan Date: Sat, 29 Oct 2016 08:51:24 +0300 Message-Id: <1477720287-17606-5-git-send-email-qca_merez@qca.qualcomm.com> (sfid-20161029_075153_952631_752CD72B) In-Reply-To: <1477720287-17606-1-git-send-email-qca_merez@qca.qualcomm.com> References: <1477720287-17606-1-git-send-email-qca_merez@qca.qualcomm.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: Implement cfg80211 abort_scan op to allow the upper layer to abort an ongoing scan request. In addition, notify wil6210 device on scan abort request instead of just ignoring the scan response. Signed-off-by: Maya Erez --- drivers/net/wireless/ath/wil6210/cfg80211.c | 31 ++++++++++++++++ drivers/net/wireless/ath/wil6210/main.c | 56 ++++++++++++++++------------- drivers/net/wireless/ath/wil6210/p2p.c | 10 ++---- drivers/net/wireless/ath/wil6210/wil6210.h | 3 ++ drivers/net/wireless/ath/wil6210/wmi.c | 21 +++++++++-- 5 files changed, 87 insertions(+), 34 deletions(-) diff --git a/drivers/net/wireless/ath/wil6210/cfg80211.c b/drivers/net/wireless/ath/wil6210/cfg80211.c index c6dd7a3..533872a 100644 --- a/drivers/net/wireless/ath/wil6210/cfg80211.c +++ b/drivers/net/wireless/ath/wil6210/cfg80211.c @@ -469,6 +469,34 @@ out: return rc; } +static void wil_cfg80211_abort_scan(struct wiphy *wiphy, + struct wireless_dev *wdev) +{ + struct wil6210_priv *wil = wiphy_to_wil(wiphy); + + wil_dbg_misc(wil, "wdev=0x%p iftype=%d\n", wdev, wdev->iftype); + + mutex_lock(&wil->mutex); + mutex_lock(&wil->p2p_wdev_mutex); + + if (!wil->scan_request) + goto out; + + if (wdev != wil->scan_request->wdev) { + wil_dbg_misc(wil, "abort scan was called on the wrong iface\n"); + goto out; + } + + if (wil->radio_wdev == wil->p2p_wdev) + wil_p2p_stop_radio_operations(wil); + else + wil_abort_scan(wil, true); + +out: + mutex_unlock(&wil->p2p_wdev_mutex); + mutex_unlock(&wil->mutex); +} + static void wil_print_crypto(struct wil6210_priv *wil, struct cfg80211_crypto_settings *c) { @@ -1419,8 +1447,10 @@ static void wil_cfg80211_stop_p2p_device(struct wiphy *wiphy, wil_dbg_misc(wil, "%s: entered\n", __func__); mutex_lock(&wil->mutex); + mutex_lock(&wil->p2p_wdev_mutex); wil_p2p_stop_radio_operations(wil); p2p->p2p_dev_started = 0; + mutex_unlock(&wil->p2p_wdev_mutex); mutex_unlock(&wil->mutex); } @@ -1456,6 +1486,7 @@ static struct cfg80211_ops wil_cfg80211_ops = { .add_virtual_intf = wil_cfg80211_add_iface, .del_virtual_intf = wil_cfg80211_del_iface, .scan = wil_cfg80211_scan, + .abort_scan = wil_cfg80211_abort_scan, .connect = wil_cfg80211_connect, .disconnect = wil_cfg80211_disconnect, .change_virtual_intf = wil_cfg80211_change_iface, diff --git a/drivers/net/wireless/ath/wil6210/main.c b/drivers/net/wireless/ath/wil6210/main.c index a9bbd0b..65a487c 100644 --- a/drivers/net/wireless/ath/wil6210/main.c +++ b/drivers/net/wireless/ath/wil6210/main.c @@ -24,6 +24,7 @@ #include "boot_loader.h" #define WAIT_FOR_HALP_VOTE_MS 100 +#define WAIT_FOR_SCAN_ABORT_MS 1000 bool debug_fw; /* = false; */ module_param(debug_fw, bool, S_IRUGO); @@ -808,6 +809,34 @@ static int wil_wait_for_fw_ready(struct wil6210_priv *wil) return 0; } +void wil_abort_scan(struct wil6210_priv *wil, bool sync) +{ + int rc; + struct cfg80211_scan_info info = { + .aborted = true, + }; + + lockdep_assert_held(&wil->p2p_wdev_mutex); + + if (!wil->scan_request) + return; + + wil_dbg_misc(wil, "Abort scan_request 0x%p\n", wil->scan_request); + del_timer_sync(&wil->scan_timer); + mutex_unlock(&wil->p2p_wdev_mutex); + rc = wmi_abort_scan(wil); + if (!rc && sync) + wait_event_interruptible_timeout(wil->wq, !wil->scan_request, + msecs_to_jiffies( + WAIT_FOR_SCAN_ABORT_MS)); + + mutex_lock(&wil->p2p_wdev_mutex); + if (wil->scan_request) { + cfg80211_scan_done(wil->scan_request, &info); + wil->scan_request = NULL; + } +} + /* * We reset all the structures, and we reset the UMAC. * After calling this routine, you're expected to reload @@ -860,17 +889,7 @@ int wil_reset(struct wil6210_priv *wil, bool load_fw) mutex_unlock(&wil->wmi_mutex); mutex_lock(&wil->p2p_wdev_mutex); - if (wil->scan_request) { - struct cfg80211_scan_info info = { - .aborted = true, - }; - - wil_dbg_misc(wil, "Abort scan_request 0x%p\n", - wil->scan_request); - del_timer_sync(&wil->scan_timer); - cfg80211_scan_done(wil->scan_request, &info); - wil->scan_request = NULL; - } + wil_abort_scan(wil, false); mutex_unlock(&wil->p2p_wdev_mutex); wil_mask_irq(wil); @@ -1063,20 +1082,9 @@ int __wil_down(struct wil6210_priv *wil) } wil_enable_irq(wil); - wil_p2p_stop_radio_operations(wil); - mutex_lock(&wil->p2p_wdev_mutex); - if (wil->scan_request) { - struct cfg80211_scan_info info = { - .aborted = true, - }; - - wil_dbg_misc(wil, "Abort scan_request 0x%p\n", - wil->scan_request); - del_timer_sync(&wil->scan_timer); - cfg80211_scan_done(wil->scan_request, &info); - wil->scan_request = NULL; - } + wil_p2p_stop_radio_operations(wil); + wil_abort_scan(wil, false); mutex_unlock(&wil->p2p_wdev_mutex); wil_reset(wil, false); diff --git a/drivers/net/wireless/ath/wil6210/p2p.c b/drivers/net/wireless/ath/wil6210/p2p.c index 4087785..4f0eab0 100644 --- a/drivers/net/wireless/ath/wil6210/p2p.c +++ b/drivers/net/wireless/ath/wil6210/p2p.c @@ -272,8 +272,7 @@ void wil_p2p_stop_radio_operations(struct wil6210_priv *wil) }; lockdep_assert_held(&wil->mutex); - - mutex_lock(&wil->p2p_wdev_mutex); + lockdep_assert_held(&wil->p2p_wdev_mutex); if (wil->radio_wdev != wil->p2p_wdev) goto out; @@ -281,10 +280,8 @@ void wil_p2p_stop_radio_operations(struct wil6210_priv *wil) if (!p2p->discovery_started) { /* Regular scan on the p2p device */ if (wil->scan_request && - wil->scan_request->wdev == wil->p2p_wdev) { - cfg80211_scan_done(wil->scan_request, &info); - wil->scan_request = NULL; - } + wil->scan_request->wdev == wil->p2p_wdev) + wil_abort_scan(wil, true); goto out; } @@ -307,5 +304,4 @@ void wil_p2p_stop_radio_operations(struct wil6210_priv *wil) out: wil->radio_wdev = wil->wdev; - mutex_unlock(&wil->p2p_wdev_mutex); } diff --git a/drivers/net/wireless/ath/wil6210/wil6210.h b/drivers/net/wireless/ath/wil6210/wil6210.h index 4b22ea4..d65a5e6 100644 --- a/drivers/net/wireless/ath/wil6210/wil6210.h +++ b/drivers/net/wireless/ath/wil6210/wil6210.h @@ -873,6 +873,9 @@ int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype, u8 chan, u8 hidden_ssid, u8 is_go); int wmi_pcp_stop(struct wil6210_priv *wil); int wmi_led_cfg(struct wil6210_priv *wil, bool enable); +int wmi_abort_scan(struct wil6210_priv *wil); +void wil_abort_scan(struct wil6210_priv *wil, bool sync); + void wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, u16 reason_code, bool from_event); void wil_probe_client_flush(struct wil6210_priv *wil); diff --git a/drivers/net/wireless/ath/wil6210/wmi.c b/drivers/net/wireless/ath/wil6210/wmi.c index 8c60437..e726548 100644 --- a/drivers/net/wireless/ath/wil6210/wmi.c +++ b/drivers/net/wireless/ath/wil6210/wmi.c @@ -427,18 +427,20 @@ static void wmi_evt_scan_complete(struct wil6210_priv *wil, int id, mutex_lock(&wil->p2p_wdev_mutex); if (wil->scan_request) { struct wmi_scan_complete_event *data = d; + int status = le32_to_cpu(data->status); struct cfg80211_scan_info info = { - .aborted = (data->status != WMI_SCAN_SUCCESS), + .aborted = ((status != WMI_SCAN_SUCCESS) && + (status != WMI_SCAN_ABORT_REJECTED)), }; - wil_dbg_wmi(wil, "SCAN_COMPLETE(0x%08x)\n", data->status); + wil_dbg_wmi(wil, "SCAN_COMPLETE(0x%08x)\n", status); wil_dbg_misc(wil, "Complete scan_request 0x%p aborted %d\n", wil->scan_request, info.aborted); - del_timer_sync(&wil->scan_timer); cfg80211_scan_done(wil->scan_request, &info); wil->radio_wdev = wil->wdev; wil->scan_request = NULL; + wake_up_interruptible(&wil->wq); } else { wil_err(wil, "SCAN_COMPLETE while not scanning\n"); } @@ -1597,6 +1599,19 @@ int wmi_ps_dev_profile_cfg(struct wil6210_priv *wil, return rc; } +int wmi_abort_scan(struct wil6210_priv *wil) +{ + int rc; + + wil_dbg_wmi(wil, "sending WMI_ABORT_SCAN_CMDID\n"); + + rc = wmi_send(wil, WMI_ABORT_SCAN_CMDID, NULL, 0); + if (rc) + wil_err(wil, "Failed to abort scan (%d)\n", rc); + + return rc; +} + void wmi_event_flush(struct wil6210_priv *wil) { struct pending_wmi_event *evt, *t; -- 1.9.1