Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 263 insertions, 0 deletions

diff --git a/drivers/net/ieee802154/fakelb.c b/drivers/net/ieee802154/fakelb.c
new file mode 100644
index 0000000000..523d13ee02
--- /dev/null
+++ b/drivers/net/ieee802154/fakelb.c
@@ -0,0 +1,263 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Loopback IEEE 802.15.4 interface
+ *
+ * Copyright 2007-2012 Siemens AG
+ *
+ * Written by:
+ * Sergey Lapin <slapin@ossfans.org>
+ * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
+ * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
+ */
+
+#include <linux/module.h>
+#include <linux/timer.h>
+#include <linux/platform_device.h>
+#include <linux/netdevice.h>
+#include <linux/device.h>
+#include <linux/spinlock.h>
+#include <net/mac802154.h>
+#include <net/cfg802154.h>
+
+static int numlbs = 2;
+
+static LIST_HEAD(fakelb_phys);
+static DEFINE_MUTEX(fakelb_phys_lock);
+
+static LIST_HEAD(fakelb_ifup_phys);
+static DEFINE_RWLOCK(fakelb_ifup_phys_lock);
+
+struct fakelb_phy {
+	struct ieee802154_hw *hw;
+
+	u8 page;
+	u8 channel;
+
+	bool suspended;
+
+	struct list_head list;
+	struct list_head list_ifup;
+};
+
+static int fakelb_hw_ed(struct ieee802154_hw *hw, u8 *level)
+{
+	WARN_ON(!level);
+	*level = 0xbe;
+
+	return 0;
+}
+
+static int fakelb_hw_channel(struct ieee802154_hw *hw, u8 page, u8 channel)
+{
+	struct fakelb_phy *phy = hw->priv;
+
+	write_lock_bh(&fakelb_ifup_phys_lock);
+	phy->page = page;
+	phy->channel = channel;
+	write_unlock_bh(&fakelb_ifup_phys_lock);
+	return 0;
+}
+
+static int fakelb_hw_xmit(struct ieee802154_hw *hw, struct sk_buff *skb)
+{
+	struct fakelb_phy *current_phy = hw->priv, *phy;
+
+	read_lock_bh(&fakelb_ifup_phys_lock);
+	WARN_ON(current_phy->suspended);
+	list_for_each_entry(phy, &fakelb_ifup_phys, list_ifup) {
+		if (current_phy == phy)
+			continue;
+
+		if (current_phy->page == phy->page &&
+		    current_phy->channel == phy->channel) {
+			struct sk_buff *newskb = pskb_copy(skb, GFP_ATOMIC);
+
+			if (newskb)
+				ieee802154_rx_irqsafe(phy->hw, newskb, 0xcc);
+		}
+	}
+	read_unlock_bh(&fakelb_ifup_phys_lock);
+
+	ieee802154_xmit_complete(hw, skb, false);
+	return 0;
+}
+
+static int fakelb_hw_start(struct ieee802154_hw *hw)
+{
+	struct fakelb_phy *phy = hw->priv;
+
+	write_lock_bh(&fakelb_ifup_phys_lock);
+	phy->suspended = false;
+	list_add(&phy->list_ifup, &fakelb_ifup_phys);
+	write_unlock_bh(&fakelb_ifup_phys_lock);
+
+	return 0;
+}
+
+static void fakelb_hw_stop(struct ieee802154_hw *hw)
+{
+	struct fakelb_phy *phy = hw->priv;
+
+	write_lock_bh(&fakelb_ifup_phys_lock);
+	phy->suspended = true;
+	list_del(&phy->list_ifup);
+	write_unlock_bh(&fakelb_ifup_phys_lock);
+}
+
+static int
+fakelb_set_promiscuous_mode(struct ieee802154_hw *hw, const bool on)
+{
+	return 0;
+}
+
+static const struct ieee802154_ops fakelb_ops = {
+	.owner = THIS_MODULE,
+	.xmit_async = fakelb_hw_xmit,
+	.ed = fakelb_hw_ed,
+	.set_channel = fakelb_hw_channel,
+	.start = fakelb_hw_start,
+	.stop = fakelb_hw_stop,
+	.set_promiscuous_mode = fakelb_set_promiscuous_mode,
+};
+
+/* Number of dummy devices to be set up by this module. */
+module_param(numlbs, int, 0);
+MODULE_PARM_DESC(numlbs, " number of pseudo devices");
+
+static int fakelb_add_one(struct device *dev)
+{
+	struct ieee802154_hw *hw;
+	struct fakelb_phy *phy;
+	int err;
+
+	hw = ieee802154_alloc_hw(sizeof(*phy), &fakelb_ops);
+	if (!hw)
+		return -ENOMEM;
+
+	phy = hw->priv;
+	phy->hw = hw;
+
+	/* 868 MHz BPSK	802.15.4-2003 */
+	hw->phy->supported.channels[0] |= 1;
+	/* 915 MHz BPSK	802.15.4-2003 */
+	hw->phy->supported.channels[0] |= 0x7fe;
+	/* 2.4 GHz O-QPSK 802.15.4-2003 */
+	hw->phy->supported.channels[0] |= 0x7FFF800;
+	/* 868 MHz ASK 802.15.4-2006 */
+	hw->phy->supported.channels[1] |= 1;
+	/* 915 MHz ASK 802.15.4-2006 */
+	hw->phy->supported.channels[1] |= 0x7fe;
+	/* 868 MHz O-QPSK 802.15.4-2006 */
+	hw->phy->supported.channels[2] |= 1;
+	/* 915 MHz O-QPSK 802.15.4-2006 */
+	hw->phy->supported.channels[2] |= 0x7fe;
+	/* 2.4 GHz CSS 802.15.4a-2007 */
+	hw->phy->supported.channels[3] |= 0x3fff;
+	/* UWB Sub-gigahertz 802.15.4a-2007 */
+	hw->phy->supported.channels[4] |= 1;
+	/* UWB Low band 802.15.4a-2007 */
+	hw->phy->supported.channels[4] |= 0x1e;
+	/* UWB High band 802.15.4a-2007 */
+	hw->phy->supported.channels[4] |= 0xffe0;
+	/* 750 MHz O-QPSK 802.15.4c-2009 */
+	hw->phy->supported.channels[5] |= 0xf;
+	/* 750 MHz MPSK 802.15.4c-2009 */
+	hw->phy->supported.channels[5] |= 0xf0;
+	/* 950 MHz BPSK 802.15.4d-2009 */
+	hw->phy->supported.channels[6] |= 0x3ff;
+	/* 950 MHz GFSK 802.15.4d-2009 */
+	hw->phy->supported.channels[6] |= 0x3ffc00;
+
+	ieee802154_random_extended_addr(&hw->phy->perm_extended_addr);
+	/* fake phy channel 13 as default */
+	hw->phy->current_channel = 13;
+	phy->channel = hw->phy->current_channel;
+
+	hw->flags = IEEE802154_HW_PROMISCUOUS;
+	hw->parent = dev;
+
+	err = ieee802154_register_hw(hw);
+	if (err)
+		goto err_reg;
+
+	mutex_lock(&fakelb_phys_lock);
+	list_add_tail(&phy->list, &fakelb_phys);
+	mutex_unlock(&fakelb_phys_lock);
+
+	return 0;
+
+err_reg:
+	ieee802154_free_hw(phy->hw);
+	return err;
+}
+
+static void fakelb_del(struct fakelb_phy *phy)
+{
+	list_del(&phy->list);
+
+	ieee802154_unregister_hw(phy->hw);
+	ieee802154_free_hw(phy->hw);
+}
+
+static int fakelb_probe(struct platform_device *pdev)
+{
+	struct fakelb_phy *phy, *tmp;
+	int err, i;
+
+	for (i = 0; i < numlbs; i++) {
+		err = fakelb_add_one(&pdev->dev);
+		if (err < 0)
+			goto err_slave;
+	}
+
+	dev_info(&pdev->dev, "added %i fake ieee802154 hardware devices\n", numlbs);
+	return 0;
+
+err_slave:
+	mutex_lock(&fakelb_phys_lock);
+	list_for_each_entry_safe(phy, tmp, &fakelb_phys, list)
+		fakelb_del(phy);
+	mutex_unlock(&fakelb_phys_lock);
+	return err;
+}
+
+static int fakelb_remove(struct platform_device *pdev)
+{
+	struct fakelb_phy *phy, *tmp;
+
+	mutex_lock(&fakelb_phys_lock);
+	list_for_each_entry_safe(phy, tmp, &fakelb_phys, list)
+		fakelb_del(phy);
+	mutex_unlock(&fakelb_phys_lock);
+	return 0;
+}
+
+static struct platform_device *ieee802154fake_dev;
+
+static struct platform_driver ieee802154fake_driver = {
+	.probe = fakelb_probe,
+	.remove = fakelb_remove,
+	.driver = {
+			.name = "ieee802154fakelb",
+	},
+};
+
+static __init int fakelb_init_module(void)
+{
+	ieee802154fake_dev = platform_device_register_simple(
+			     "ieee802154fakelb", -1, NULL, 0);
+
+	pr_warn("fakelb driver is marked as deprecated, please use mac802154_hwsim!\n");
+
+	return platform_driver_register(&ieee802154fake_driver);
+}
+
+static __exit void fake_remove_module(void)
+{
+	platform_driver_unregister(&ieee802154fake_driver);
+	platform_device_unregister(ieee802154fake_dev);
+}
+
+module_init(fakelb_init_module);
+module_exit(fake_remove_module);
+MODULE_LICENSE("GPL");