Return-path: Received: from sabertooth01.qualcomm.com ([65.197.215.72]:9440 "EHLO sabertooth01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754671AbbFOOmq (ORCPT ); Mon, 15 Jun 2015 10:42:46 -0400 From: Vladimir Kondratiev Cc: Vladimir Kondratiev , linux-wireless@vger.kernel.org, wil6210@qca.qualcomm.com, Dedy Lansky , Hamad Kadmany To: Kalle Valo Subject: [PATCH] wil6210: restart AP upon change in privacy settings Date: Mon, 15 Jun 2015 17:42:32 +0300 Message-Id: <1434379352-14084-1-git-send-email-qca_vkondrat@qca.qualcomm.com> (sfid-20150615_164259_911646_9DED13E6) Sender: linux-wireless-owner@vger.kernel.org List-ID: privacy settings might change while AP is running. Inside wil_cfg80211_change_beacon(), detect change in privacy settings and handle it by stopping and re-starting the AP. Firmware cannot handle on-the-fly privacy settings change and so AP restart is required. Signed-off-by: Dedy Lansky Signed-off-by: Hamad Kadmany Signed-off-by: Vladimir Kondratiev --- drivers/net/wireless/ath/wil6210/cfg80211.c | 217 +++++++++++++++++----------- drivers/net/wireless/ath/wil6210/wil6210.h | 2 + 2 files changed, 135 insertions(+), 84 deletions(-) diff --git a/drivers/net/wireless/ath/wil6210/cfg80211.c b/drivers/net/wireless/ath/wil6210/cfg80211.c index c79cfe0..e4be2d9 100644 --- a/drivers/net/wireless/ath/wil6210/cfg80211.c +++ b/drivers/net/wireless/ath/wil6210/cfg80211.c @@ -736,6 +736,92 @@ static int wil_fix_bcon(struct wil6210_priv *wil, return rc; } +/* internal functions for device reset and starting AP */ +static int _wil_cfg80211_set_ies(struct wiphy *wiphy, + size_t probe_ies_len, const u8 *probe_ies, + size_t assoc_ies_len, const u8 *assoc_ies) + +{ + int rc; + struct wil6210_priv *wil = wiphy_to_wil(wiphy); + + /* FW do not form regular beacon, so bcon IE's are not set + * For the DMG bcon, when it will be supported, bcon IE's will + * be reused; add something like: + * wmi_set_ie(wil, WMI_FRAME_BEACON, bcon->beacon_ies_len, + * bcon->beacon_ies); + */ + rc = wmi_set_ie(wil, WMI_FRAME_PROBE_RESP, probe_ies_len, probe_ies); + if (rc) { + wil_err(wil, "set_ie(PROBE_RESP) failed\n"); + return rc; + } + + rc = wmi_set_ie(wil, WMI_FRAME_ASSOC_RESP, assoc_ies_len, assoc_ies); + if (rc) { + wil_err(wil, "set_ie(ASSOC_RESP) failed\n"); + return rc; + } + + return 0; +} + +static int _wil_cfg80211_start_ap(struct wiphy *wiphy, + struct net_device *ndev, + const u8 *ssid, size_t ssid_len, u32 privacy, + int bi, u8 chan, + size_t probe_ies_len, const u8 *probe_ies, + size_t assoc_ies_len, const u8 *assoc_ies, + u8 hidden_ssid) +{ + struct wil6210_priv *wil = wiphy_to_wil(wiphy); + int rc; + struct wireless_dev *wdev = ndev->ieee80211_ptr; + u8 wmi_nettype = wil_iftype_nl2wmi(wdev->iftype); + + wil_set_recovery_state(wil, fw_recovery_idle); + + mutex_lock(&wil->mutex); + + __wil_down(wil); + rc = __wil_up(wil); + if (rc) + goto out; + + rc = wmi_set_ssid(wil, ssid_len, ssid); + if (rc) + goto out; + + rc = _wil_cfg80211_set_ies(wiphy, probe_ies_len, probe_ies, + assoc_ies_len, assoc_ies); + if (rc) + goto out; + + wil->privacy = privacy; + wil->channel = chan; + wil->hidden_ssid = hidden_ssid; + + netif_carrier_on(ndev); + + rc = wmi_pcp_start(wil, bi, wmi_nettype, chan, hidden_ssid); + if (rc) + goto err_pcp_start; + + rc = wil_bcast_init(wil); + if (rc) + goto err_bcast; + + goto out; /* success */ + +err_bcast: + wmi_pcp_stop(wil); +err_pcp_start: + netif_carrier_off(ndev); +out: + mutex_unlock(&wil->mutex); + return rc; +} + static int wil_cfg80211_change_beacon(struct wiphy *wiphy, struct net_device *ndev, struct cfg80211_beacon_data *bcon) @@ -746,6 +832,7 @@ static int wil_cfg80211_change_beacon(struct wiphy *wiphy, const u8 *pr_ies = NULL; size_t pr_ies_len = 0; int rc; + u32 privacy = 0; wil_dbg_misc(wil, "%s()\n", __func__); wil_print_bcon_data(bcon); @@ -760,40 +847,41 @@ static int wil_cfg80211_change_beacon(struct wiphy *wiphy, wil_print_bcon_data(bcon); } - /* FW do not form regular beacon, so bcon IE's are not set - * For the DMG bcon, when it will be supported, bcon IE's will - * be reused; add something like: - * wmi_set_ie(wil, WMI_FRAME_BEACON, bcon->beacon_ies_len, - * bcon->beacon_ies); - */ - rc = wmi_set_ie(wil, WMI_FRAME_PROBE_RESP, pr_ies_len, pr_ies); - if (rc) { - wil_err(wil, "set_ie(PROBE_RESP) failed\n"); - return rc; - } + if (pr_ies && cfg80211_find_ie(WLAN_EID_RSN, pr_ies, pr_ies_len)) + privacy = 1; - rc = wmi_set_ie(wil, WMI_FRAME_ASSOC_RESP, - bcon->assocresp_ies_len, - bcon->assocresp_ies); - if (rc) { - wil_err(wil, "set_ie(ASSOC_RESP) failed\n"); - return rc; + /* in case privacy has changed, need to restart the AP */ + if (wil->privacy != privacy) { + struct wireless_dev *wdev = ndev->ieee80211_ptr; + + wil_dbg_misc(wil, "privacy changed %d=>%d. Restarting AP\n", + wil->privacy, privacy); + + rc = _wil_cfg80211_start_ap(wiphy, ndev, wdev->ssid, + wdev->ssid_len, privacy, + wdev->beacon_interval, + wil->channel, pr_ies_len, pr_ies, + bcon->assocresp_ies_len, + bcon->assocresp_ies, + wil->hidden_ssid); + } else { + rc = _wil_cfg80211_set_ies(wiphy, pr_ies_len, pr_ies, + bcon->assocresp_ies_len, + bcon->assocresp_ies); } - return 0; + return rc; } static int wil_cfg80211_start_ap(struct wiphy *wiphy, struct net_device *ndev, struct cfg80211_ap_settings *info) { - int rc = 0; + int rc; struct wil6210_priv *wil = wiphy_to_wil(wiphy); - struct wireless_dev *wdev = ndev->ieee80211_ptr; struct ieee80211_channel *channel = info->chandef.chan; struct cfg80211_beacon_data *bcon = &info->beacon; struct cfg80211_crypto_settings *crypto = &info->crypto; - u8 wmi_nettype = wil_iftype_nl2wmi(wdev->iftype); struct ieee80211_mgmt *f = (struct ieee80211_mgmt *)bcon->probe_resp; size_t hlen = offsetof(struct ieee80211_mgmt, u.probe_resp.variable); const u8 *pr_ies = NULL; @@ -807,6 +895,23 @@ static int wil_cfg80211_start_ap(struct wiphy *wiphy, return -EINVAL; } + switch (info->hidden_ssid) { + case NL80211_HIDDEN_SSID_NOT_IN_USE: + hidden_ssid = WMI_HIDDEN_SSID_DISABLED; + break; + + case NL80211_HIDDEN_SSID_ZERO_LEN: + hidden_ssid = WMI_HIDDEN_SSID_SEND_EMPTY; + break; + + case NL80211_HIDDEN_SSID_ZERO_CONTENTS: + hidden_ssid = WMI_HIDDEN_SSID_CLEAR; + break; + + default: + wil_err(wil, "AP: Invalid hidden SSID %d\n", info->hidden_ssid); + return -EOPNOTSUPP; + } wil_dbg_misc(wil, "AP on Channel %d %d MHz, %s\n", channel->hw_value, channel->center_freq, info->privacy ? "secure" : "open"); wil_dbg_misc(wil, "Privacy: %d auth_type %d\n", @@ -830,70 +935,14 @@ static int wil_cfg80211_start_ap(struct wiphy *wiphy, wil_print_bcon_data(bcon); } - wil_set_recovery_state(wil, fw_recovery_idle); - - mutex_lock(&wil->mutex); - - __wil_down(wil); - rc = __wil_up(wil); - if (rc) - goto out; - - rc = wmi_set_ssid(wil, info->ssid_len, info->ssid); - if (rc) - goto out; - - /* IE's */ - /* bcon 'head IE's are not relevant for 60g band */ - /* - * FW do not form regular beacon, so bcon IE's are not set - * For the DMG bcon, when it will be supported, bcon IE's will - * be reused; add something like: - * wmi_set_ie(wil, WMI_FRAME_BEACON, bcon->beacon_ies_len, - * bcon->beacon_ies); - */ - wmi_set_ie(wil, WMI_FRAME_PROBE_RESP, pr_ies_len, pr_ies); - wmi_set_ie(wil, WMI_FRAME_ASSOC_RESP, bcon->assocresp_ies_len, - bcon->assocresp_ies); - - wil->privacy = info->privacy; - - switch (info->hidden_ssid) { - case NL80211_HIDDEN_SSID_NOT_IN_USE: - hidden_ssid = WMI_HIDDEN_SSID_DISABLED; - break; - - case NL80211_HIDDEN_SSID_ZERO_LEN: - hidden_ssid = WMI_HIDDEN_SSID_SEND_EMPTY; - break; - - case NL80211_HIDDEN_SSID_ZERO_CONTENTS: - hidden_ssid = WMI_HIDDEN_SSID_CLEAR; - break; - - default: - rc = -EOPNOTSUPP; - goto out; - } - - netif_carrier_on(ndev); - - rc = wmi_pcp_start(wil, info->beacon_interval, wmi_nettype, - channel->hw_value, hidden_ssid); - if (rc) - goto err_pcp_start; + rc = _wil_cfg80211_start_ap(wiphy, ndev, + info->ssid, info->ssid_len, info->privacy, + info->beacon_interval, channel->hw_value, + pr_ies_len, pr_ies, + bcon->assocresp_ies_len, + bcon->assocresp_ies, + hidden_ssid); - rc = wil_bcast_init(wil); - if (rc) - goto err_bcast; - - goto out; /* success */ -err_bcast: - wmi_pcp_stop(wil); -err_pcp_start: - netif_carrier_off(ndev); -out: - mutex_unlock(&wil->mutex); return rc; } diff --git a/drivers/net/wireless/ath/wil6210/wil6210.h b/drivers/net/wireless/ath/wil6210/wil6210.h index 275355d..c63e4a3 100644 --- a/drivers/net/wireless/ath/wil6210/wil6210.h +++ b/drivers/net/wireless/ath/wil6210/wil6210.h @@ -559,6 +559,8 @@ struct wil6210_priv { /* profile */ u32 monitor_flags; u32 privacy; /* secure connection? */ + u8 hidden_ssid; /* relevant in AP mode */ + u16 channel; /* relevant in AP mode */ int sinfo_gen; u32 ap_isolate; /* no intra-BSS communication */ /* interrupt moderation */ -- 2.1.4