From: Luciano Coelho <luciano.coelho@xxxxxxxxx>
Before we get all the chain (ie. mac80211, cfg80211, nl80211 and
userspace) changed to support net-detect, we can use this debugfs
entry for easy testing and as a proof of concept.
Signed-off-by: Luciano Coelho <luciano.coelho@xxxxxxxxx>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
---
drivers/net/wireless/iwlwifi/mvm/d3.c | 9 +++
drivers/net/wireless/iwlwifi/mvm/debugfs.c | 122 +++++++++++++++++++++++++++++
drivers/net/wireless/iwlwifi/mvm/mvm.h | 4 +
drivers/net/wireless/iwlwifi/mvm/ops.c | 7 ++
4 files changed, 142 insertions(+)
diff --git a/drivers/net/wireless/iwlwifi/mvm/d3.c b/drivers/net/wireless/iwlwifi/mvm/d3.c
index 7a66a09..0b3295e 100644
--- a/drivers/net/wireless/iwlwifi/mvm/d3.c
+++ b/drivers/net/wireless/iwlwifi/mvm/d3.c
@@ -1061,6 +1061,15 @@ static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
vif, mvmvif, ap_sta);
if (ret)
goto out;
+ } else if (mvm->nd_config) {
+ ret = iwl_mvm_switch_to_d3(mvm);
+ if (ret)
+ goto out;
+
+ ret = iwl_mvm_scan_offload_start(mvm, vif, mvm->nd_config,
+ mvm->nd_ies);
+ if (ret)
+ goto out;
} else {
ret = 1;
goto out_noreset;
diff --git a/drivers/net/wireless/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/iwlwifi/mvm/debugfs.c
index 50527a9..2a61bac 100644
--- a/drivers/net/wireless/iwlwifi/mvm/debugfs.c
+++ b/drivers/net/wireless/iwlwifi/mvm/debugfs.c
@@ -1250,6 +1250,126 @@ static ssize_t iwl_dbgfs_d3_sram_read(struct file *file, char __user *user_buf,
return ret;
}
+
+#define MAX_NUM_ND_MATCHSETS 10
+
+static ssize_t iwl_dbgfs_netdetect_write(struct iwl_mvm *mvm, char *buf,
+ size_t count, loff_t *ppos)
+{
+ const char *seps = ",\n";
+ char *buf_ptr = buf;
+ char *value_str = NULL;
+ int ret, i;
+
+ /* TODO: don't free if write is being called several times in one go */
+ if (mvm->nd_config) {
+ kfree(mvm->nd_config->match_sets);
+ kfree(mvm->nd_config);
+ mvm->nd_config = NULL;
+ kfree(mvm->nd_ies);
+ mvm->nd_ies = NULL;
+ }
+
+ mvm->nd_ies = kzalloc(sizeof(*mvm->nd_ies), GFP_KERNEL);
+ if (!mvm->nd_ies)
+ return -ENOMEM;
+
+ mvm->nd_config = kzalloc(sizeof(*mvm->nd_config) +
+ (11 * sizeof(struct ieee80211_channel *)),
+ GFP_KERNEL);
+ if (!mvm->nd_config) {
+ ret = -ENOMEM;
+ goto out_free;
+ }
+
+ mvm->nd_config->n_channels = 11;
+ mvm->nd_config->scan_width = NL80211_BSS_CHAN_WIDTH_20;
+ mvm->nd_config->interval = 5;
+ mvm->nd_config->min_rssi_thold = -80;
+ for (i = 0; i < mvm->nd_config->n_channels; i++)
+ mvm->nd_config->channels[i] = &mvm->nvm_data->channels[i];
+
+ mvm->nd_config->match_sets =
+ kcalloc(MAX_NUM_ND_MATCHSETS,
+ sizeof(*mvm->nd_config->match_sets),
+ GFP_KERNEL);
+ if (!mvm->nd_config->match_sets) {
+ ret = -ENOMEM;
+ goto out_free;
+ }
+
+ while ((value_str = strsep(&buf_ptr, seps)) &&
+ strlen(value_str)) {
+ struct cfg80211_match_set *set;
+
+ if (mvm->nd_config->n_match_sets >= MAX_NUM_ND_MATCHSETS) {
+ ret = -EINVAL;
+ goto out_free;
+ }
+
+ set = &mvm->nd_config->match_sets[mvm->nd_config->n_match_sets];
+ set->ssid.ssid_len = strlen(value_str);
+
+ if (set->ssid.ssid_len > IEEE80211_MAX_SSID_LEN) {
+ ret = -EINVAL;
+ goto out_free;
+ }
+
+ memcpy(set->ssid.ssid, value_str, set->ssid.ssid_len);
+
+ mvm->nd_config->n_match_sets++;
+ }
+
+ ret = count;
+
+ if (mvm->nd_config->n_match_sets)
+ goto out;
+
+out_free:
+ if (mvm->nd_config)
+ kfree(mvm->nd_config->match_sets);
+ kfree(mvm->nd_config);
+ mvm->nd_config = NULL;
+ kfree(mvm->nd_ies);
+ mvm->nd_ies = NULL;
+out:
+ return ret;
+}
+
+static ssize_t
+iwl_dbgfs_netdetect_read(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct iwl_mvm *mvm = file->private_data;
+ size_t bufsz, ret;
+ char *buf;
+ int i, n_match_sets, pos = 0;
+
+ n_match_sets = mvm->nd_config ? mvm->nd_config->n_match_sets : 0;
+
+ bufsz = n_match_sets * (IEEE80211_MAX_SSID_LEN + 1) + 1;
+ buf = kzalloc(bufsz, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ for (i = 0; i < n_match_sets; i++) {
+ if (pos +
+ mvm->nd_config->match_sets[i].ssid.ssid_len + 2 > bufsz) {
+ ret = -EIO;
+ goto out;
+ }
+
+ memcpy(buf + pos, mvm->nd_config->match_sets[i].ssid.ssid,
+ mvm->nd_config->match_sets[i].ssid.ssid_len);
+ pos += mvm->nd_config->match_sets[i].ssid.ssid_len;
+ buf[pos++] = '\n';
+ }
+
+ ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
+out:
+ kfree(buf);
+ return ret;
+}
#endif
#define PRINT_MVM_REF(ref) do { \
@@ -1428,6 +1548,7 @@ MVM_DEBUGFS_READ_WRITE_FILE_OPS(bcast_filters_macs, 256);
#ifdef CONFIG_PM_SLEEP
MVM_DEBUGFS_READ_WRITE_FILE_OPS(d3_sram, 8);
+MVM_DEBUGFS_READ_WRITE_FILE_OPS(netdetect, 384);
#endif
int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
@@ -1487,6 +1608,7 @@ int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
if (!debugfs_create_bool("d3_wake_sysassert", S_IRUSR | S_IWUSR,
mvm->debugfs_dir, &mvm->d3_wake_sysassert))
goto err;
+ MVM_DEBUGFS_ADD_FILE(netdetect, mvm->debugfs_dir, S_IRUSR | S_IWUSR);
#endif
if (!debugfs_create_u8("low_latency_agg_frame_limit", S_IRUSR | S_IWUSR,
diff --git a/drivers/net/wireless/iwlwifi/mvm/mvm.h b/drivers/net/wireless/iwlwifi/mvm/mvm.h
index 14ec678..60aee62 100644
--- a/drivers/net/wireless/iwlwifi/mvm/mvm.h
+++ b/drivers/net/wireless/iwlwifi/mvm/mvm.h
@@ -659,6 +659,10 @@ struct iwl_mvm {
#ifdef CONFIG_PM_SLEEP
struct wiphy_wowlan_support wowlan;
int gtk_ivlen, gtk_icvlen, ptk_ivlen, ptk_icvlen;
+
+ /* sched scan settings for net detect */
+ struct cfg80211_sched_scan_request *nd_config;
+ struct ieee80211_scan_ies *nd_ies;
#ifdef CONFIG_IWLWIFI_DEBUGFS
u32 d3_wake_sysassert; /* must be u32 for debugfs_create_bool */
bool d3_test_active;
diff --git a/drivers/net/wireless/iwlwifi/mvm/ops.c b/drivers/net/wireless/iwlwifi/mvm/ops.c
index 48cb25a..047d83d 100644
--- a/drivers/net/wireless/iwlwifi/mvm/ops.c
+++ b/drivers/net/wireless/iwlwifi/mvm/ops.c
@@ -594,6 +594,13 @@ static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
kfree(mvm->d3_resume_sram);
+ if (mvm->nd_config) {
+ kfree(mvm->nd_config->match_sets);
+ kfree(mvm->nd_config);
+ mvm->nd_config = NULL;
+ kfree(mvm->nd_ies);
+ mvm->nd_ies = NULL;
+ }
#endif
iwl_trans_op_mode_leave(mvm->trans);
--
1.9.1
--
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