From cde9070d9970eef1f7ec2360586c802a16230ad8 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:43:50 +0000
Subject: [PATCH] rtl88x2CE_WiFi_linux driver
---
kernel/drivers/net/wireless/rockchip_wlan/cywdhd/bcmdhd/wl_roam.c | 519 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 513 insertions(+), 6 deletions(-)
diff --git a/kernel/drivers/net/wireless/rockchip_wlan/cywdhd/bcmdhd/wl_roam.c b/kernel/drivers/net/wireless/rockchip_wlan/cywdhd/bcmdhd/wl_roam.c
index aa5f6ff..e3be4aa 100644
--- a/kernel/drivers/net/wireless/rockchip_wlan/cywdhd/bcmdhd/wl_roam.c
+++ b/kernel/drivers/net/wireless/rockchip_wlan/cywdhd/bcmdhd/wl_roam.c
@@ -1,15 +1,16 @@
-/* SPDX-License-Identifier: GPL-2.0 */
/*
* Linux roam cache
*
- * Copyright (C) 1999-2019, Broadcom Corporation
- *
+ * Portions of this code are copyright (c) 2022 Cypress Semiconductor Corporation
+ *
+ * Copyright (C) 1999-2017, Broadcom Corporation
+ *
* Unless you and Broadcom execute a separate written software license
* agreement governing use of this software, this software is licensed to you
* under the terms of the GNU General Public License version 2 (the "GPL"),
* available at http://www.broadcom.com/licenses/GPLv2.php, with the
* following added to such license:
- *
+ *
* As a special exception, the copyright holders of this software give you
* permission to link this software with independent modules, and to copy and
* distribute the resulting executable under terms of your choice, provided that
@@ -17,7 +18,7 @@
* the license of that module. An independent module is a module which is not
* derived from this software. The special exception does not apply to any
* modifications of the software.
- *
+ *
* Notwithstanding the above, under no circumstances may you combine this
* software in any way with any other Broadcom software provided under a license
* other than the GPL, without Broadcom's express prior written consent.
@@ -25,5 +26,511 @@
*
* <<Broadcom-WL-IPTag/Open:>>
*
- * $Id: wl_roam.c 589977 2015-10-01 07:03:40Z $
+ * $Id: wl_roam.c 798173 2019-01-07 09:23:21Z $
*/
+
+#include <typedefs.h>
+#include <osl.h>
+#include <bcmwifi_channels.h>
+#include <wlioctl.h>
+#include <bcmutils.h>
+#ifdef WL_CFG80211
+#include <wl_cfg80211.h>
+#endif // endif
+#include <wldev_common.h>
+#include <bcmstdlib_s.h>
+
+#ifdef ESCAN_CHANNEL_CACHE
+#define MAX_ROAM_CACHE 200
+#define MAX_SSID_BUFSIZE 36
+
+#define ROAMSCAN_MODE_NORMAL 0
+#define ROAMSCAN_MODE_WES 1
+
+typedef struct {
+ chanspec_t chanspec;
+ int ssid_len;
+ char ssid[MAX_SSID_BUFSIZE];
+} roam_channel_cache;
+
+static int n_roam_cache = 0;
+static int roam_band = WLC_BAND_AUTO;
+static roam_channel_cache roam_cache[MAX_ROAM_CACHE];
+static uint band2G, band5G, band6G, band_bw;
+
+#ifdef WES_SUPPORT
+static int roamscan_mode = ROAMSCAN_MODE_NORMAL;
+#endif /* WES_SUPPORT */
+
+#ifdef ROAM_CHANNEL_CACHE
+int init_roam_cache(struct bcm_cfg80211 *cfg, int ioctl_ver)
+{
+ int err;
+ struct net_device *dev = bcmcfg_to_prmry_ndev(cfg);
+ s32 mode;
+
+ /* Check support in firmware */
+ err = wldev_iovar_getint(dev, "roamscan_mode", &mode);
+ if (err && (err == BCME_UNSUPPORTED)) {
+ /* If firmware doesn't support, return error. Else proceed */
+ WL_ERR(("roamscan_mode iovar failed. %d\n", err));
+ return err;
+ }
+
+#ifdef D11AC_IOTYPES
+ if (ioctl_ver == 1) {
+ /* legacy chanspec */
+ band2G = WL_LCHANSPEC_BAND_2G;
+ band5G = WL_LCHANSPEC_BAND_5G;
+ band_bw = WL_LCHANSPEC_BW_20 | WL_LCHANSPEC_CTL_SB_NONE;
+ } else {
+ band2G = WL_CHANSPEC_BAND_2G;
+ band5G = WL_CHANSPEC_BAND_5G;
+ band6G = WL_CHANSPEC_BAND_6G;
+ band_bw = WL_CHANSPEC_BW_20;
+ }
+#else
+ band2G = WL_CHANSPEC_BAND_2G;
+ band5G = WL_CHANSPEC_BAND_5G;
+ band6G = WL_CHANSPEC_BAND_6G;
+ band_bw = WL_CHANSPEC_BW_20 | WL_CHANSPEC_CTL_SB_NONE;
+#endif /* D11AC_IOTYPES */
+
+ n_roam_cache = 0;
+ roam_band = WLC_BAND_AUTO;
+#ifdef WES_SUPPORT
+ roamscan_mode = ROAMSCAN_MODE_NORMAL;
+#endif /* WES_SUPPORT */
+
+ return 0;
+}
+#endif /* ROAM_CHANNEL_CACHE */
+
+#ifdef WES_SUPPORT
+int get_roamscan_mode(struct net_device *dev, int *mode)
+{
+ *mode = roamscan_mode;
+
+ return 0;
+}
+
+int set_roamscan_mode(struct net_device *dev, int mode)
+{
+ int error = 0;
+ roamscan_mode = mode;
+ n_roam_cache = 0;
+
+ error = wldev_iovar_setint(dev, "roamscan_mode", mode);
+ if (error) {
+ WL_ERR(("Failed to set roamscan mode to %d, error = %d\n", mode, error));
+ }
+
+ return error;
+}
+
+int get_roamscan_channel_list(struct net_device *dev, unsigned char channels[],
+ int n_channels)
+{
+ int n = 0;
+ int max_channel_number = MIN(n_channels, n_roam_cache);
+
+ if (roamscan_mode == ROAMSCAN_MODE_WES) {
+ for (n = 0; n < max_channel_number; n++) {
+ channels[n] = roam_cache[n].chanspec & WL_CHANSPEC_CHAN_MASK;
+
+ WL_DBG(("channel[%d] - [%02d] \n", n, channels[n]));
+ }
+ }
+
+ return n;
+}
+
+int set_roamscan_channel_list(struct net_device *dev,
+ unsigned char n, unsigned char channels[], int ioctl_ver)
+{
+ int i;
+ int error;
+ wl_roam_channel_list_t channel_list;
+ char iobuf[WLC_IOCTL_SMLEN];
+ roamscan_mode = ROAMSCAN_MODE_WES;
+
+ if (n > MAX_ROAM_CHANNEL)
+ n = MAX_ROAM_CHANNEL;
+
+ for (i = 0; i < n; i++) {
+ chanspec_t chanspec;
+
+ if (channels[i] <= CH_MAX_2G_CHANNEL) {
+ chanspec = band2G | band_bw | channels[i];
+ } else {
+ chanspec = band5G | band_bw | channels[i];
+ }
+ roam_cache[i].chanspec = chanspec;
+ channel_list.channels[i] = chanspec;
+
+ WL_DBG(("channel[%d] - [%02d] \n", i, channels[i]));
+ }
+
+ n_roam_cache = n;
+ channel_list.n = n;
+
+ /* need to set ROAMSCAN_MODE_NORMAL to update roamscan_channels,
+ * otherwise, it won't be updated
+ */
+ error = wldev_iovar_setint(dev, "roamscan_mode", ROAMSCAN_MODE_NORMAL);
+ if (error) {
+ WL_ERR(("Failed to set roamscan mode to %d, error = %d\n",
+ ROAMSCAN_MODE_NORMAL, error));
+ return error;
+ }
+ error = wldev_iovar_setbuf(dev, "roamscan_channels", &channel_list,
+ sizeof(channel_list), iobuf, sizeof(iobuf), NULL);
+ if (error) {
+ WL_ERR(("Failed to set roamscan channels, error = %d\n", error));
+ return error;
+ }
+ error = wldev_iovar_setint(dev, "roamscan_mode", ROAMSCAN_MODE_WES);
+ if (error) {
+ WL_ERR(("Failed to set roamscan mode to %d, error = %d\n",
+ ROAMSCAN_MODE_WES, error));
+ }
+
+ return error;
+}
+#endif /* WES_SUPPORT */
+
+#ifdef ESCAN_CHANNEL_CACHE
+void set_roam_band(int band)
+{
+ roam_band = band;
+}
+
+void reset_roam_cache(struct bcm_cfg80211 *cfg)
+{
+ if (!cfg->rcc_enabled) {
+ return;
+ }
+
+#ifdef WES_SUPPORT
+ if (roamscan_mode == ROAMSCAN_MODE_WES)
+ return;
+#endif /* WES_SUPPORT */
+
+ n_roam_cache = 0;
+}
+
+void add_roam_cache(struct bcm_cfg80211 *cfg, wl_bss_info_t *bi)
+{
+ int i;
+ uint8 channel;
+ char chanbuf[CHANSPEC_STR_LEN];
+
+ if (!cfg->rcc_enabled) {
+ return;
+ }
+
+#ifdef WES_SUPPORT
+ if (roamscan_mode == ROAMSCAN_MODE_WES)
+ return;
+#endif /* WES_SUPPORT */
+
+ if (n_roam_cache >= MAX_ROAM_CACHE)
+ return;
+
+ for (i = 0; i < n_roam_cache; i++) {
+ if ((roam_cache[i].ssid_len == bi->SSID_len) &&
+ (roam_cache[i].chanspec == bi->chanspec) &&
+ (memcmp(roam_cache[i].ssid, bi->SSID, bi->SSID_len) == 0)) {
+ /* identical one found, just return */
+ return;
+ }
+ }
+
+ roam_cache[n_roam_cache].ssid_len = bi->SSID_len;
+ channel = wf_chspec_ctlchan(bi->chanspec);
+ WL_DBG(("CHSPEC = %s, CTL %d\n", wf_chspec_ntoa_ex(bi->chanspec, chanbuf), channel));
+ roam_cache[n_roam_cache].chanspec =
+ (CHSPEC_IS6G(wl_chspec_driver_to_host(bi->chanspec))?
+ band6G : (channel <= CH_MAX_2G_CHANNEL ? band2G : band5G)) | band_bw | channel;
+ (void)memcpy_s(roam_cache[n_roam_cache].ssid, bi->SSID_len, bi->SSID, bi->SSID_len);
+
+ n_roam_cache++;
+}
+
+static bool is_duplicated_channel(const chanspec_t *channels, int n_channels, chanspec_t new)
+{
+ int i;
+
+ for (i = 0; i < n_channels; i++) {
+ if (channels[i] == new)
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+int get_roam_channel_list(int target_chan,
+ chanspec_t *channels, int n_channels, const wlc_ssid_t *ssid, int ioctl_ver,
+ struct ieee80211_channel *chan)
+{
+ int i, n = 1;
+ char chanbuf[CHANSPEC_STR_LEN];
+
+ /* first index is filled with the given target channel */
+ if (target_chan) {
+ channels[0] = (target_chan & WL_CHANSPEC_CHAN_MASK) |
+ (chan->center_freq > FREQ_START_6G_CHANNEL ?
+ band6G : (target_chan <= CH_MAX_2G_CHANNEL ? band2G : band5G)) | band_bw;
+ } else {
+ /* If target channel is not provided, set the index to 0 */
+ n = 0;
+ }
+
+ WL_DBG((" %s: %03d 0x%04X\n", __FUNCTION__, target_chan, channels[0]));
+
+#ifdef WES_SUPPORT
+ if (roamscan_mode == ROAMSCAN_MODE_WES) {
+ for (i = 0; i < n_roam_cache; i++) {
+ chanspec_t ch = roam_cache[i].chanspec;
+ bool is_2G = ioctl_ver == 1 ? LCHSPEC_IS2G(ch) : CHSPEC_IS2G(ch);
+ bool is_5G = ioctl_ver == 1 ? LCHSPEC_IS5G(ch) : CHSPEC_IS5G(ch);
+ bool is_6G = CHSPEC_IS6G(ch);
+ bool band_match = ((roam_band == WLC_BAND_AUTO) ||
+ ((roam_band == WLC_BAND_2G) && is_2G) ||
+ ((roam_band == WLC_BAND_5G) && is_5G) ||
+ ((roam_band == WLC_BAND_6G) && is_6G));
+
+ ch = CHSPEC_CHANNEL(ch) | (is_2G ? band2G : band5G) | band_bw;
+ ch = CHSPEC_CHANNEL(ch) |
+ (is_6G ? band6G : (is_2G ? band2G : band5G)) | band_bw;
+ if (band_match && !is_duplicated_channel(channels, n, ch)) {
+ WL_DBG(("%s: Chanspec = %s\n", __FUNCTION__,
+ wf_chspec_ntoa_ex(ch, chanbuf)));
+ channels[n++] = ch;
+ if (n >= n_channels) {
+ WL_ERR(("Too many roam scan channels\n"));
+ return n;
+ }
+ }
+ }
+
+ return n;
+ }
+#endif /* WES_SUPPORT */
+
+ for (i = 0; i < n_roam_cache; i++) {
+ chanspec_t ch = roam_cache[i].chanspec;
+ bool is_2G = ioctl_ver == 1 ? LCHSPEC_IS2G(ch) : CHSPEC_IS2G(ch);
+ bool is_5G = ioctl_ver == 1 ? LCHSPEC_IS5G(ch) : CHSPEC_IS5G(ch);
+ bool is_6G = CHSPEC_IS6G(ch);
+ bool band_match = ((roam_band == WLC_BAND_AUTO) ||
+ ((roam_band == WLC_BAND_2G) && is_2G) ||
+ ((roam_band == WLC_BAND_5G) && is_5G) ||
+ ((roam_band == WLC_BAND_6G) && is_6G));
+
+ ch = CHSPEC_CHANNEL(ch) | (is_6G ? band6G : (is_2G ? band2G : band5G)) | band_bw;
+ if ((roam_cache[i].ssid_len == ssid->SSID_len) &&
+ band_match && !is_duplicated_channel(channels, n, ch) &&
+ (memcmp(roam_cache[i].ssid, ssid->SSID, ssid->SSID_len) == 0)) {
+ /* match found, add it */
+ WL_DBG(("%s: Chanspec = %s\n", __FUNCTION__,
+ wf_chspec_ntoa_ex(ch, chanbuf)));
+ channels[n++] = ch;
+ if (n >= n_channels) {
+ WL_ERR(("Too many roam scan channels\n"));
+ return n;
+ }
+ }
+ }
+
+ return n;
+}
+#endif /* ESCAN_CHANNEL_CACHE */
+
+#ifdef ROAM_CHANNEL_CACHE
+void print_roam_cache(struct bcm_cfg80211 *cfg)
+{
+ int i;
+
+ if (!cfg->rcc_enabled) {
+ return;
+ }
+
+ WL_DBG((" %d cache\n", n_roam_cache));
+
+ for (i = 0; i < n_roam_cache; i++) {
+ roam_cache[i].ssid[roam_cache[i].ssid_len] = 0;
+ WL_DBG(("0x%02X %02d %s\n", roam_cache[i].chanspec,
+ roam_cache[i].ssid_len, roam_cache[i].ssid));
+ }
+}
+
+static void add_roamcache_channel(wl_roam_channel_list_t *channels, chanspec_t ch)
+{
+ int i;
+
+ if (channels->n >= MAX_ROAM_CHANNEL) /* buffer full */
+ return;
+
+ for (i = 0; i < channels->n; i++) {
+ if (channels->channels[i] == ch) /* already in the list */
+ return;
+ }
+
+ channels->channels[i] = ch;
+ channels->n++;
+
+ WL_DBG((" RCC: %02d 0x%04X\n",
+ ch & WL_CHANSPEC_CHAN_MASK, ch));
+}
+
+void update_roam_cache(struct bcm_cfg80211 *cfg, int ioctl_ver)
+{
+ int error, i, prev_channels;
+ wl_roam_channel_list_t channel_list;
+ char iobuf[WLC_IOCTL_SMLEN];
+ struct net_device *dev = bcmcfg_to_prmry_ndev(cfg);
+ wlc_ssid_t ssid;
+
+ if (!cfg->rcc_enabled) {
+ return;
+ }
+
+#ifdef WES_SUPPORT
+ if (roamscan_mode == ROAMSCAN_MODE_WES) {
+ /* no update when ROAMSCAN_MODE_WES */
+ return;
+ }
+#endif /* WES_SUPPORT */
+
+ if (!wl_get_drv_status(cfg, CONNECTED, dev)) {
+ WL_DBG(("Not associated\n"));
+ return;
+ }
+
+ /* need to read out the current cache list
+ as the firmware may change dynamically
+ */
+ error = wldev_iovar_getbuf(dev, "roamscan_channels", 0, 0,
+ (void *)&channel_list, sizeof(channel_list), NULL);
+ if (error) {
+ WL_ERR(("Failed to get roamscan channels, error = %d\n", error));
+ return;
+ }
+
+ error = wldev_get_ssid(dev, &ssid);
+ if (error) {
+ WL_ERR(("Failed to get SSID, err=%d\n", error));
+ return;
+ }
+
+ prev_channels = channel_list.n;
+ for (i = 0; i < n_roam_cache; i++) {
+ chanspec_t ch = roam_cache[i].chanspec;
+ bool is_2G = ioctl_ver == 1 ? LCHSPEC_IS2G(ch) : CHSPEC_IS2G(ch);
+ bool is_5G = ioctl_ver == 1 ? LCHSPEC_IS5G(ch) : CHSPEC_IS5G(ch);
+ bool is_6G = CHSPEC_IS6G(ch);
+ bool band_match = ((roam_band == WLC_BAND_AUTO) ||
+ ((roam_band == WLC_BAND_2G) && is_2G) ||
+ ((roam_band == WLC_BAND_5G) && is_5G) ||
+ ((roam_band == WLC_BAND_6G) && is_6G));
+
+ if ((roam_cache[i].ssid_len == ssid.SSID_len) &&
+ band_match && (memcmp(roam_cache[i].ssid, ssid.SSID, ssid.SSID_len) == 0)) {
+ /* match found, add it */
+ ch = CHSPEC_CHANNEL(ch) |
+ (is_6G ? band6G : (is_2G ? band2G : band5G)) | band_bw;
+ add_roamcache_channel(&channel_list, ch);
+ }
+ }
+ if (prev_channels != channel_list.n) {
+ /* channel list updated */
+ error = wldev_iovar_setbuf(dev, "roamscan_channels", &channel_list,
+ sizeof(channel_list), iobuf, sizeof(iobuf), NULL);
+ if (error) {
+ WL_ERR(("Failed to update roamscan channels, error = %d\n", error));
+ }
+ }
+
+ WL_DBG(("%d AP, %d cache item(s), err=%d\n", n_roam_cache, channel_list.n, error));
+}
+
+void wl_update_roamscan_cache_by_band(struct net_device *dev, int band)
+{
+ int i, error, ioctl_ver, wes_mode;
+ wl_roam_channel_list_t chanlist_before, chanlist_after;
+ char iobuf[WLC_IOCTL_SMLEN];
+
+ roam_band = band;
+
+ error = wldev_iovar_getint(dev, "roamscan_mode", &wes_mode);
+ if (error) {
+ WL_ERR(("Failed to get roamscan mode, error = %d\n", error));
+ return;
+ }
+
+ ioctl_ver = wl_cfg80211_get_ioctl_version();
+ /* in case of WES mode, update channel list by band based on the cache in DHD */
+ if (wes_mode) {
+ int n = 0;
+ chanlist_before.n = n_roam_cache;
+
+ for (n = 0; n < n_roam_cache; n++) {
+ chanspec_t ch = roam_cache[n].chanspec;
+ bool is_2G = ioctl_ver == 1 ? LCHSPEC_IS2G(ch) : CHSPEC_IS2G(ch);
+ bool is_6G = CHSPEC_IS6G(ch);
+ chanlist_before.channels[n] = CHSPEC_CHANNEL(ch) |
+ (is_6G ? band6G : (is_2G ? band2G : band5G)) | band_bw;
+ }
+ } else {
+ if (band == WLC_BAND_AUTO) {
+ return;
+ }
+ error = wldev_iovar_getbuf(dev, "roamscan_channels", 0, 0,
+ (void *)&chanlist_before, sizeof(wl_roam_channel_list_t), NULL);
+ if (error) {
+ WL_ERR(("Failed to get roamscan channels, error = %d\n", error));
+ return;
+ }
+ }
+ chanlist_after.n = 0;
+ /* filtering by the given band */
+ for (i = 0; i < chanlist_before.n; i++) {
+ chanspec_t chspec = chanlist_before.channels[i];
+ bool is_2G = ioctl_ver == 1 ? LCHSPEC_IS2G(chspec) : CHSPEC_IS2G(chspec);
+ bool is_5G = ioctl_ver == 1 ? LCHSPEC_IS5G(chspec) : CHSPEC_IS5G(chspec);
+ bool is_6G = CHSPEC_IS6G(chspec);
+ bool band_match = ((band == WLC_BAND_AUTO) ||
+ ((band == WLC_BAND_2G) && is_2G) ||
+ ((band == WLC_BAND_5G) && is_5G) ||
+ ((band == WLC_BAND_6G) && is_6G));
+ if (band_match) {
+ chanlist_after.channels[chanlist_after.n++] = chspec;
+ }
+ }
+
+ if (wes_mode) {
+ /* need to set ROAMSCAN_MODE_NORMAL to update roamscan_channels,
+ * otherwise, it won't be updated
+ */
+ wldev_iovar_setint(dev, "roamscan_mode", ROAMSCAN_MODE_NORMAL);
+
+ error = wldev_iovar_setbuf(dev, "roamscan_channels", &chanlist_after,
+ sizeof(wl_roam_channel_list_t), iobuf, sizeof(iobuf), NULL);
+ if (error) {
+ WL_ERR(("Failed to update roamscan channels, error = %d\n", error));
+ }
+ wldev_iovar_setint(dev, "roamscan_mode", ROAMSCAN_MODE_WES);
+ } else {
+ if (chanlist_before.n == chanlist_after.n) {
+ return;
+ }
+ error = wldev_iovar_setbuf(dev, "roamscan_channels", &chanlist_after,
+ sizeof(wl_roam_channel_list_t), iobuf, sizeof(iobuf), NULL);
+ if (error) {
+ WL_ERR(("Failed to update roamscan channels, error = %d\n", error));
+ }
+ }
+}
+#endif /* ROAM_CHANNEL_CACHE */
+#endif /* ESCAN_CHANNEL_CACHE */
--
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