wlan: Store avoid channel list
Store avoid channel list into recoverable location.
If Softap mode detects current channel is not safe to use,
WLAN kernel module will be restarted.
Then WLAN kernel module internal storage will lost
unsafe channel information.
To avoid start softap with unsafe channel, channel information
should be stored in static location.
Change-Id: I5a6d7ab7314936d7bbaaf7a005e58179a4dc0613
CRs-fixed: 576020
Signed-off-by: Leo Chang <leochang@codeaurora.org>
diff --git a/drivers/net/wireless/wcnss/wcnss_wlan.c b/drivers/net/wireless/wcnss/wcnss_wlan.c
index b11d88d..bc3d463 100644
--- a/drivers/net/wireless/wcnss/wcnss_wlan.c
+++ b/drivers/net/wireless/wcnss/wcnss_wlan.c
@@ -97,6 +97,8 @@
#define WCNSS_CALDATA_DNLD_REQ (WCNSS_CTRL_MSG_START + 6)
#define WCNSS_CALDATA_DNLD_RSP (WCNSS_CTRL_MSG_START + 7)
+/* max 20mhz channel count */
+#define WCNSS_MAX_CH_NUM 45
#define VALID_VERSION(version) \
((strncmp(version, "INVALID", WCNSS_VERSION_LEN)) ? 1 : 0)
@@ -268,6 +270,8 @@
struct mutex dev_lock;
struct mutex ctrl_lock;
wait_queue_head_t read_wait;
+ u16 unsafe_ch_count;
+ u16 unsafe_ch_list[WCNSS_MAX_CH_NUM];
} *penv = NULL;
static ssize_t wcnss_wlan_macaddr_store(struct device *dev,
@@ -861,6 +865,35 @@
return -ENODEV;
}
+int wcnss_set_wlan_unsafe_channel(u16 *unsafe_ch_list, u16 ch_count)
+{
+ if (penv && unsafe_ch_list &&
+ (ch_count <= WCNSS_MAX_CH_NUM)) {
+ memcpy((char *)penv->unsafe_ch_list,
+ (char *)unsafe_ch_list, ch_count * sizeof(u16));
+ penv->unsafe_ch_count = ch_count;
+ return 0;
+ } else
+ return -ENODEV;
+}
+EXPORT_SYMBOL(wcnss_set_wlan_unsafe_channel);
+
+int wcnss_get_wlan_unsafe_channel(u16 *unsafe_ch_list, u16 buffer_size,
+ u16 *ch_count)
+{
+ if (penv) {
+ if (buffer_size < penv->unsafe_ch_count * sizeof(u16))
+ return -ENODEV;
+ memcpy((char *)unsafe_ch_list,
+ (char *)penv->unsafe_ch_list,
+ penv->unsafe_ch_count * sizeof(u16));
+ *ch_count = penv->unsafe_ch_count;
+ return 0;
+ } else
+ return -ENODEV;
+}
+EXPORT_SYMBOL(wcnss_get_wlan_unsafe_channel);
+
static int wcnss_smd_tx(void *data, int len)
{
int ret = 0;
diff --git a/include/linux/wcnss_wlan.h b/include/linux/wcnss_wlan.h
index a7ff0a2..5e0b71e 100644
--- a/include/linux/wcnss_wlan.h
+++ b/include/linux/wcnss_wlan.h
@@ -67,7 +67,11 @@
int wcnss_prealloc_put(void *ptr);
int wcnss_device_ready(void);
int wcnss_wlan_iris_xo_mode(void);
-
+int wcnss_set_wlan_unsafe_channel(
+ u16 *unsafe_ch_list, u16 ch_count);
+int wcnss_get_wlan_unsafe_channel(
+ u16 *unsafe_ch_list, u16 buffer_size,
+ u16 *ch_count);
#define wcnss_wlan_get_drvdata(dev) dev_get_drvdata(dev)
#define wcnss_wlan_set_drvdata(dev, data) dev_set_drvdata((dev), (data))