1 files changed, 123 insertions, 0 deletions
diff --git a/drivers/net/wireless/quantenna/qtnfmac/util.c b/drivers/net/wireless/quantenna/qtnfmac/util.c
new file mode 100644
index 0000000..cda6f5f
--- /dev/null
+++ b/drivers/net/wireless/quantenna/qtnfmac/util.c
@@ -0,0 +1,123 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */
+
+#include "util.h"
+#include "qtn_hw_ids.h"
+
+void qtnf_sta_list_init(struct qtnf_sta_list *list)
+{
+	if (unlikely(!list))
+		return;
+
+	INIT_LIST_HEAD(&list->head);
+	atomic_set(&list->size, 0);
+}
+
+struct qtnf_sta_node *qtnf_sta_list_lookup(struct qtnf_sta_list *list,
+					   const u8 *mac)
+{
+	struct qtnf_sta_node *node;
+
+	if (unlikely(!mac))
+		return NULL;
+
+	list_for_each_entry(node, &list->head, list) {
+		if (ether_addr_equal(node->mac_addr, mac))
+			return node;
+	}
+
+	return NULL;
+}
+
+struct qtnf_sta_node *qtnf_sta_list_lookup_index(struct qtnf_sta_list *list,
+						 size_t index)
+{
+	struct qtnf_sta_node *node;
+
+	if (qtnf_sta_list_size(list) <= index)
+		return NULL;
+
+	list_for_each_entry(node, &list->head, list) {
+		if (index-- == 0)
+			return node;
+	}
+
+	return NULL;
+}
+
+struct qtnf_sta_node *qtnf_sta_list_add(struct qtnf_vif *vif,
+					const u8 *mac)
+{
+	struct qtnf_sta_list *list = &vif->sta_list;
+	struct qtnf_sta_node *node;
+
+	if (unlikely(!mac))
+		return NULL;
+
+	node = qtnf_sta_list_lookup(list, mac);
+
+	if (node)
+		goto done;
+
+	node = kzalloc(sizeof(*node), GFP_KERNEL);
+	if (unlikely(!node))
+		goto done;
+
+	ether_addr_copy(node->mac_addr, mac);
+	list_add_tail(&node->list, &list->head);
+	atomic_inc(&list->size);
+	++vif->generation;
+
+done:
+	return node;
+}
+
+bool qtnf_sta_list_del(struct qtnf_vif *vif, const u8 *mac)
+{
+	struct qtnf_sta_list *list = &vif->sta_list;
+	struct qtnf_sta_node *node;
+	bool ret = false;
+
+	node = qtnf_sta_list_lookup(list, mac);
+
+	if (node) {
+		list_del(&node->list);
+		atomic_dec(&list->size);
+		kfree(node);
+		++vif->generation;
+		ret = true;
+	}
+
+	return ret;
+}
+
+void qtnf_sta_list_free(struct qtnf_sta_list *list)
+{
+	struct qtnf_sta_node *node, *tmp;
+
+	atomic_set(&list->size, 0);
+
+	list_for_each_entry_safe(node, tmp, &list->head, list) {
+		list_del(&node->list);
+		kfree(node);
+	}
+
+	INIT_LIST_HEAD(&list->head);
+}
+
+const char *qtnf_chipid_to_string(unsigned long chip_id)
+{
+	switch (chip_id) {
+	case QTN_CHIP_ID_TOPAZ:
+		return "Topaz";
+	case QTN_CHIP_ID_PEARL:
+		return "Pearl revA";
+	case QTN_CHIP_ID_PEARL_B:
+		return "Pearl revB";
+	case QTN_CHIP_ID_PEARL_C:
+		return "Pearl revC";
+	default:
+		return "unknown";
+	}
+}
+EXPORT_SYMBOL_GPL(qtnf_chipid_to_string);