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Date:   Wed, 15 Jan 2020 12:12:20 +0000
From:   Jérôme Pouiller <Jerome.Pouiller@...abs.com>
To:     "devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
        "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S . Miller" <davem@...emloft.net>,
        Jérôme Pouiller <Jerome.Pouiller@...abs.com>
Subject: [PATCH 09/65] staging: wfx: simplify hif_start() usage

From: Jérôme Pouiller <jerome.pouiller@...abs.com>

The structure hif_req_start come from hardware API. It is not intended
to be manipulated in upper layers of the driver.

In add, current code for hif_start() is too dumb. It should pack data
with hardware representation instead of leaving all work to the caller.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@...abs.com>
---
 drivers/staging/wfx/hif_tx.c | 17 ++++++++++-----
 drivers/staging/wfx/hif_tx.h |  5 ++++-
 drivers/staging/wfx/sta.c    | 40 ++++++++++++------------------------
 3 files changed, 29 insertions(+), 33 deletions(-)

diff --git a/drivers/staging/wfx/hif_tx.c b/drivers/staging/wfx/hif_tx.c
index d8e159670eae..be3138590a4f 100644
--- a/drivers/staging/wfx/hif_tx.c
+++ b/drivers/staging/wfx/hif_tx.c
@@ -409,16 +409,23 @@ int hif_set_pm(struct wfx_vif *wvif, bool ps, int dynamic_ps_timeout)
 	return ret;
 }
 
-int hif_start(struct wfx_vif *wvif, const struct hif_req_start *arg)
+int hif_start(struct wfx_vif *wvif, const struct ieee80211_bss_conf *conf,
+	      const struct ieee80211_channel *channel)
 {
 	int ret;
 	struct hif_msg *hif;
 	struct hif_req_start *body = wfx_alloc_hif(sizeof(*body), &hif);
 
-	memcpy(body, arg, sizeof(*body));
-	cpu_to_le16s(&body->channel_number);
-	cpu_to_le32s(&body->beacon_interval);
-	cpu_to_le32s(&body->basic_rate_set);
+	body->dtim_period = conf->dtim_period,
+	body->short_preamble = conf->use_short_preamble,
+	body->channel_number = cpu_to_le16(channel->hw_value),
+	body->beacon_interval = cpu_to_le32(conf->beacon_int);
+	body->basic_rate_set =
+		cpu_to_le32(wfx_rate_mask_to_hw(wvif->wdev, conf->basic_rates));
+	if (!conf->hidden_ssid) {
+		body->ssid_length = conf->ssid_len;
+		memcpy(body->ssid, conf->ssid, conf->ssid_len);
+	}
 	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_START, sizeof(*body));
 	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);
 	kfree(hif);
diff --git a/drivers/staging/wfx/hif_tx.h b/drivers/staging/wfx/hif_tx.h
index e8855ead3a18..fbaed991b112 100644
--- a/drivers/staging/wfx/hif_tx.h
+++ b/drivers/staging/wfx/hif_tx.h
@@ -12,6 +12,8 @@
 
 #include "hif_api_cmd.h"
 
+struct ieee80211_channel;
+struct ieee80211_bss_conf;
 struct ieee80211_tx_queue_params;
 struct cfg80211_scan_request;
 struct wfx_dev;
@@ -51,7 +53,8 @@ int hif_add_key(struct wfx_dev *wdev, const struct hif_req_add_key *arg);
 int hif_remove_key(struct wfx_dev *wdev, int idx);
 int hif_set_edca_queue_params(struct wfx_vif *wvif, u16 queue,
 			      const struct ieee80211_tx_queue_params *arg);
-int hif_start(struct wfx_vif *wvif, const struct hif_req_start *arg);
+int hif_start(struct wfx_vif *wvif, const struct ieee80211_bss_conf *conf,
+	      const struct ieee80211_channel *channel);
 int hif_beacon_transmit(struct wfx_vif *wvif, bool enable);
 int hif_map_link(struct wfx_vif *wvif, u8 *mac_addr, int flags, int sta_id);
 int hif_update_ie(struct wfx_vif *wvif, const struct hif_ie_flags *target_frame,
diff --git a/drivers/staging/wfx/sta.c b/drivers/staging/wfx/sta.c
index 8c55089b1ea4..660a75024f4b 100644
--- a/drivers/staging/wfx/sta.c
+++ b/drivers/staging/wfx/sta.c
@@ -740,38 +740,24 @@ static void wfx_set_cts_work(struct work_struct *work)
 static int wfx_start_ap(struct wfx_vif *wvif)
 {
 	int ret;
-	struct ieee80211_bss_conf *conf = &wvif->vif->bss_conf;
-	struct hif_req_start start = {
-		.channel_number = wvif->channel->hw_value,
-		.beacon_interval = conf->beacon_int,
-		.dtim_period = conf->dtim_period,
-		.short_preamble = conf->use_short_preamble,
-		.basic_rate_set = wfx_rate_mask_to_hw(wvif->wdev,
-						      conf->basic_rates),
-	};
 
-	memset(start.ssid, 0, sizeof(start.ssid));
-	if (!conf->hidden_ssid) {
-		start.ssid_length = conf->ssid_len;
-		memcpy(start.ssid, conf->ssid, start.ssid_length);
-	}
-
-	wvif->beacon_int = conf->beacon_int;
-	wvif->dtim_period = conf->dtim_period;
+	wvif->beacon_int = wvif->vif->bss_conf.beacon_int;
+	wvif->dtim_period = wvif->vif->bss_conf.dtim_period;
 
 	memset(&wvif->link_id_db, 0, sizeof(wvif->link_id_db));
 
 	wvif->wdev->tx_burst_idx = -1;
-	ret = hif_start(wvif, &start);
-	if (!ret)
-		ret = wfx_upload_keys(wvif);
-	if (!ret) {
-		if (wvif_count(wvif->wdev) <= 1)
-			hif_set_block_ack_policy(wvif, 0xFF, 0xFF);
-		wvif->state = WFX_STATE_AP;
-		wfx_update_filtering(wvif);
-	}
-	return ret;
+	ret = hif_start(wvif, &wvif->vif->bss_conf, wvif->channel);
+	if (ret)
+		return ret;
+	ret = wfx_upload_keys(wvif);
+	if (ret)
+		return ret;
+	if (wvif_count(wvif->wdev) <= 1)
+		hif_set_block_ack_policy(wvif, 0xFF, 0xFF);
+	wvif->state = WFX_STATE_AP;
+	wfx_update_filtering(wvif);
+	return 0;
 }
 
 static int wfx_update_beaconing(struct wfx_vif *wvif)
-- 
2.25.0

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