qcacld-3.0: Add infra to disable/enable wifi
As part of protected dynamic interface control feature, add infra to disable/enable wifi, when invoked from user space. Change-Id: I3f6c2abcef1ef89cbd0a735820de9b54d37bfa29 CRs-Fixed: 3166467
Tento commit je obsažen v:
Aditya Kodukula
odevzdal
Madan Koyyalamudi
Madan Koyyalamudi
rodič
372e1ff370
revize
c4ca02df28
3
Kbuild
3
Kbuild
@@ -4379,6 +4379,9 @@ ifeq ($(CONFIG_DP_HW_TX_DELAY_STATS_ENABLE), y)
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cppflags-y += -DHW_TX_DELAY_STATS_ENABLE
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endif
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#Flags to enable/disable Dynamic WLAN interface control feature
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cppflags-$(CONFIG_WLAN_DYNAMIC_IFACE_CTRL) += -DFEATURE_WLAN_DYNAMIC_IFACE_CTRL
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KBUILD_CPPFLAGS += $(cppflags-y)
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# Currently, for versions of gcc which support it, the kernel Makefile
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@@ -1968,6 +1968,22 @@ struct hdd_rtpm_tput_policy_context {
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};
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#endif
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/**
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* enum wlan_state_ctrl_str_id - state contrl param string id
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* @WLAN_OFF_STR: Turn OFF WiFi
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* @WLAN_ON_STR: Turn ON WiFi
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* @WLAN_ENABLE_STR: Enable WiFi
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* @WLAN_DISABLE_STR: Disable Wifi
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* @WLAN_WAIT_FOR_READY_STR: Driver should wait for ongoing recovery
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*/
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enum wlan_state_ctrl_str_id {
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WLAN_OFF_STR = 0,
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WLAN_ON_STR,
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WLAN_ENABLE_STR,
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WLAN_DISABLE_STR,
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WLAN_WAIT_FOR_READY_STR
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};
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/**
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* struct hdd_context - hdd shared driver and psoc/device context
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* @psoc: object manager psoc context
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@@ -1997,6 +2013,7 @@ struct hdd_rtpm_tput_policy_context {
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* @dump_in_progress: Stores value of dump in progress
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* @hdd_dual_sta_policy: Concurrent STA policy configuration
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* @rx_skip_qdisc_chk_conc: flag to skip ingress qdisc check in concurrency
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* @is_wlan_disabled: if wlan is disabled by userspace
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*/
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struct hdd_context {
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struct wlan_objmgr_psoc *psoc;
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@@ -2379,6 +2396,7 @@ struct hdd_context {
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#ifdef CONFIG_WLAN_FREQ_LIST
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uint8_t power_type;
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#endif
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bool is_wlan_disabled;
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};
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/**
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@@ -1460,6 +1460,11 @@ int __wlan_hdd_validate_context(struct hdd_context *hdd_ctx, const char *func)
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return -EAGAIN;
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}
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if (hdd_ctx->is_wlan_disabled) {
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hdd_debug("WLAN is disabled by user space");
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return -EAGAIN;
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}
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return 0;
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}
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@@ -4989,6 +4994,12 @@ static int __hdd_open(struct net_device *dev)
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return -EIO;
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}
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ret = wlan_hdd_validate_context(hdd_ctx);
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if (ret) {
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hdd_err("Can't start WLAN module, WiFi Disabled");
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return ret;
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}
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ret = hdd_trigger_psoc_idle_restart(hdd_ctx);
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if (ret) {
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hdd_err("Failed to start WLAN modules return");
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@@ -17486,41 +17497,132 @@ static void hdd_inform_wifi_off(void)
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osif_psoc_sync_op_stop(psoc_sync);
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}
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static int hdd_validate_wlan_string(const char __user *user_buf)
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{
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char buf[15];
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int i;
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static const char * const wlan_str[] = {
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[WLAN_OFF_STR] = "OFF",
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[WLAN_ON_STR] = "ON",
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[WLAN_ENABLE_STR] = "ENABLE",
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[WLAN_DISABLE_STR] = "DISABLE",
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[WLAN_WAIT_FOR_READY_STR] = "WAIT_FOR_READY"
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};
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if (copy_from_user(buf, user_buf, sizeof(buf))) {
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pr_err("Failed to read buffer\n");
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return -EINVAL;
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}
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for (i = 0; i < ARRAY_SIZE(wlan_str); i++) {
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if (qdf_str_ncmp(buf, wlan_str[i], strlen(wlan_str[i])) == 0)
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return i;
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}
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return -EINVAL;
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}
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#ifdef FEATURE_WLAN_DYNAMIC_IFACE_CTRL
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#define WIFI_DISABLE_SLEEP (10)
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#define WIFI_DISABLE_MAX_RETRY_ATTEMPTS (10)
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static int hdd_disable_wifi(struct hdd_context *hdd_ctx)
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{
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int ret;
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int retries = 0;
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void *hif_ctx;
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if (!hdd_ctx) {
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hdd_err_rl("hdd_ctx is Null");
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return -EINVAL;
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}
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if (hdd_ctx->is_wlan_disabled) {
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hdd_err_rl("Wifi already disabled");
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return -EINVAL;
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}
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hdd_debug("Initiating WLAN idle shutdown");
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if (hdd_is_any_interface_open(hdd_ctx)) {
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hdd_err("Interfaces still open, cannot process wifi disable");
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return -EAGAIN;
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}
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hif_ctx = cds_get_context(QDF_MODULE_ID_HIF);
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hdd_prevent_suspend(WIFI_POWER_EVENT_WAKELOCK_DRIVER_IDLE_SHUTDOWN);
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while (retries < WIFI_DISABLE_MAX_RETRY_ATTEMPTS) {
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if (hif_ctx) {
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/*
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* Trigger runtime sync resume before psoc_idle_shutdown
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* such that resume can happen successfully
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*/
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hif_pm_runtime_sync_resume(hif_ctx,
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RTPM_ID_SOC_IDLE_SHUTDOWN);
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}
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ret = pld_idle_shutdown(hdd_ctx->parent_dev,
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hdd_psoc_idle_shutdown);
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if (-EAGAIN == ret || hdd_ctx->is_wiphy_suspended) {
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hdd_debug("System suspend in progress.Retries done:%d",
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retries);
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msleep(WIFI_DISABLE_SLEEP);
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retries++;
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}
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break;
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}
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hdd_allow_suspend(WIFI_POWER_EVENT_WAKELOCK_DRIVER_IDLE_SHUTDOWN);
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if (retries > WIFI_DISABLE_MAX_RETRY_ATTEMPTS) {
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hdd_debug("Max retries reached");
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return -EINVAL;
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}
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hdd_ctx->is_wlan_disabled = true;
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return 0;
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}
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#else
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static int hdd_disable_wifi(struct hdd_context *hdd_ctx)
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{
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return 0;
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}
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#endif /* FEATURE_WLAN_DYNAMIC_IFACE_CTRL */
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static ssize_t wlan_hdd_state_ctrl_param_write(struct file *filp,
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const char __user *user_buf,
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size_t count,
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loff_t *f_pos)
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{
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char buf[3];
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static const char wlan_off_str[] = "OFF";
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static const char wlan_on_str[] = "ON";
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static const char wlan_wait_for_ready_str[] = "WAIT_FOR_READY";
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int ret;
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int id, ret;
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unsigned long rc;
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struct hdd_context *hdd_ctx;
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bool is_wait_for_ready = false;
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if (copy_from_user(buf, user_buf, 3)) {
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pr_err("Failed to read buffer\n");
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return -EINVAL;
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}
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if (strncmp(buf, wlan_off_str, strlen(wlan_off_str)) == 0) {
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id = hdd_validate_wlan_string(user_buf);
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switch (id) {
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case WLAN_OFF_STR:
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pr_info("Wifi turning off from UI\n");
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hdd_inform_wifi_off();
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goto exit;
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}
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if (strncmp(buf, wlan_on_str, strlen(wlan_on_str)) == 0)
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case WLAN_ON_STR:
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pr_info("Wifi Turning On from UI\n");
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if (strncmp(buf, wlan_wait_for_ready_str,
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strlen(wlan_wait_for_ready_str)) == 0) {
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break;
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case WLAN_WAIT_FOR_READY_STR:
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is_wait_for_ready = true;
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pr_info("Wifi wait for ready from UI\n");
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} else if (strncmp(buf, wlan_on_str, strlen(wlan_on_str)) != 0) {
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pr_err("Invalid value received from framework");
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goto exit;
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break;
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case WLAN_ENABLE_STR:
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pr_info("Enabling WiFi\n");
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break;
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case WLAN_DISABLE_STR:
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pr_info("Disabling WiFi\n");
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break;
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default:
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hdd_err_rl("Invalid value received from framework");
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return -EINVAL;
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}
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hdd_info("is_driver_loaded %d is_driver_recovering %d",
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@@ -17547,6 +17649,25 @@ static ssize_t wlan_hdd_state_ctrl_param_write(struct file *filp,
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if (hdd_ctx)
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hdd_psoc_idle_timer_stop(hdd_ctx);
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if (id == WLAN_DISABLE_STR) {
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ret = hdd_disable_wifi(hdd_ctx);
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if (ret)
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return ret;
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}
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if (id == WLAN_ENABLE_STR) {
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if (!hdd_ctx) {
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hdd_err_rl("hdd_ctx is Null");
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return -EINVAL;
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}
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if (!hdd_ctx->is_wlan_disabled) {
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hdd_err_rl("WiFi is already enabled");
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return -EINVAL;
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}
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hdd_ctx->is_wlan_disabled = false;
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}
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exit:
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return count;
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}
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