add d80211 from a recent wireless-dev checkout

SVN-Revision: 5939

1 files changed, 372 insertions, 0 deletions

diff --git a/package/d80211/src/ieee80211_iface.c b/package/d80211/src/ieee80211_iface.c
new file mode 100644
index 0000000000..3e9d531808
--- /dev/null
+++ b/package/d80211/src/ieee80211_iface.c
@@ -0,0 +1,372 @@
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/kernel.h>
+#include <linux/if_arp.h>
+#include <linux/netdevice.h>
+#include <linux/rtnetlink.h>
+#include <net/d80211.h>
+#include <net/d80211_mgmt.h>
+#include "ieee80211_i.h"
+#include "sta_info.h"
+
+void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata)
+{
+	int i;
+
+	/* Default values for sub-interface parameters */
+	sdata->drop_unencrypted = 0;
+	sdata->eapol = 1;
+	for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++)
+		skb_queue_head_init(&sdata->fragments[i].skb_list);
+}
+
+static void ieee80211_if_sdata_deinit(struct ieee80211_sub_if_data *sdata)
+{
+	int i;
+
+	for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) {
+		__skb_queue_purge(&sdata->fragments[i].skb_list);
+	}
+}
+
+/* Must be called with rtnl lock held. */
+int ieee80211_if_add(struct net_device *dev, const char *name,
+		     int format, struct net_device **new_dev)
+{
+	struct net_device *ndev, *tmp_dev;
+	struct ieee80211_local *local = dev->ieee80211_ptr;
+	struct ieee80211_sub_if_data *sdata = NULL, *sdata_parent;
+	int ret;
+	int i;
+
+	ASSERT_RTNL();
+	ndev = *new_dev = alloc_netdev(sizeof(struct ieee80211_sub_if_data),
+				       "", ieee80211_if_setup);
+	if (!ndev)
+		return -ENOMEM;
+
+	ndev->ieee80211_ptr = local;
+	if (strlen(name) == 0) {
+		i = 0;
+		do {
+			sprintf(ndev->name, "%s.%d", dev->name, i++);
+			tmp_dev = dev_get_by_name(ndev->name);
+			if (!tmp_dev)
+				break;
+			dev_put(tmp_dev);
+		} while (i < 10000);
+	} else if (format) {
+		ret = dev_alloc_name(ndev, name);
+		if (ret < 0)
+			goto fail;
+	} else {
+		snprintf(ndev->name, IFNAMSIZ, "%s", name);
+	}
+
+	memcpy(ndev->dev_addr, local->hw.perm_addr, ETH_ALEN);
+	ndev->base_addr = dev->base_addr;
+	ndev->irq = dev->irq;
+	ndev->mem_start = dev->mem_start;
+	ndev->mem_end = dev->mem_end;
+	ndev->flags = dev->flags & IFF_MULTICAST;
+	SET_NETDEV_DEV(ndev, local->hw.dev);
+
+	sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
+	sdata->type = IEEE80211_IF_TYPE_AP;
+	sdata->dev = ndev;
+	sdata->local = local;
+	sdata_parent = IEEE80211_DEV_TO_SUB_IF(dev);
+	ieee80211_if_sdata_init(sdata);
+
+	ret = register_netdevice(ndev);
+	if (ret)
+		goto fail;
+	ret = ieee80211_sysfs_add_netdevice(ndev);
+	if (ret) {
+		/* ndev will be freed by ndev->destructor */
+		unregister_netdevice(ndev);
+		*new_dev = NULL;
+		return ret;
+	}
+
+	list_add(&sdata->list, &local->sub_if_list);
+
+	return 0;
+
+fail:
+	free_netdev(ndev);
+	*new_dev = NULL;
+	return ret;
+}
+
+int ieee80211_if_add_mgmt(struct ieee80211_local *local)
+{
+	struct net_device *ndev;
+	struct ieee80211_sub_if_data *nsdata;
+	int ret;
+
+	ASSERT_RTNL();
+
+	ndev = alloc_netdev(sizeof(struct ieee80211_sub_if_data), "",
+			    ieee80211_if_mgmt_setup);
+	if (!ndev)
+		return -ENOMEM;
+	ret = dev_alloc_name(ndev, "wmgmt%d");
+	if (ret < 0)
+		goto fail;
+
+	ndev->ieee80211_ptr = local;
+	memcpy(ndev->dev_addr, local->hw.perm_addr, ETH_ALEN);
+	SET_NETDEV_DEV(ndev, local->hw.dev);
+
+	nsdata = IEEE80211_DEV_TO_SUB_IF(ndev);
+	nsdata->type = IEEE80211_IF_TYPE_MGMT;
+	nsdata->dev = ndev;
+	nsdata->local = local;
+	ieee80211_if_sdata_init(nsdata);
+
+	ret = register_netdevice(ndev);
+	if (ret)
+		goto fail;
+	ret = ieee80211_sysfs_add_netdevice(ndev);
+	if (ret)
+		goto fail_sysfs;
+	if (local->open_count > 0)
+		dev_open(ndev);
+	local->apdev = ndev;
+	return 0;
+
+fail_sysfs:
+	unregister_netdevice(ndev);
+fail:
+	free_netdev(ndev);
+	return ret;
+}
+
+void ieee80211_if_del_mgmt(struct ieee80211_local *local)
+{
+	struct net_device *apdev;
+
+	ASSERT_RTNL();
+	apdev = local->apdev;
+	ieee80211_sysfs_remove_netdevice(apdev);
+	local->apdev = NULL;
+	unregister_netdevice(apdev);
+}
+
+void ieee80211_if_set_type(struct net_device *dev, int type)
+{
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+	sdata->type = type;
+	switch (type) {
+	case IEEE80211_IF_TYPE_WDS:
+		sdata->bss = NULL;
+		break;
+	case IEEE80211_IF_TYPE_VLAN:
+		break;
+	case IEEE80211_IF_TYPE_AP:
+		sdata->u.ap.dtim_period = 2;
+		sdata->u.ap.force_unicast_rateidx = -1;
+		sdata->u.ap.max_ratectrl_rateidx = -1;
+		skb_queue_head_init(&sdata->u.ap.ps_bc_buf);
+		sdata->bss = &sdata->u.ap;
+		break;
+	case IEEE80211_IF_TYPE_STA:
+	case IEEE80211_IF_TYPE_IBSS: {
+		struct ieee80211_sub_if_data *msdata;
+		struct ieee80211_if_sta *ifsta;
+
+		ifsta = &sdata->u.sta;
+		INIT_WORK(&ifsta->work, ieee80211_sta_work, dev);
+
+		ifsta->capab = WLAN_CAPABILITY_ESS;
+		ifsta->auth_algs = IEEE80211_AUTH_ALG_OPEN |
+			IEEE80211_AUTH_ALG_SHARED_KEY;
+		ifsta->create_ibss = 1;
+		ifsta->wmm_enabled = 1;
+
+		msdata = IEEE80211_DEV_TO_SUB_IF(sdata->local->mdev);
+		sdata->bss = &msdata->u.ap;
+		break;
+	}
+	case IEEE80211_IF_TYPE_MNTR:
+		dev->type = ARPHRD_IEEE80211_PRISM;
+		break;
+	default:
+		printk(KERN_WARNING "%s: %s: Unknown interface type 0x%x",
+		       dev->name, __FUNCTION__, type);
+	}
+	ieee80211_sysfs_change_if_type(dev);
+}
+
+/* Must be called with rtnl lock held. */
+void ieee80211_if_reinit(struct net_device *dev)
+{
+	struct ieee80211_local *local = dev->ieee80211_ptr;
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct sta_info *sta;
+	int i;
+
+	ASSERT_RTNL();
+	ieee80211_if_sdata_deinit(sdata);
+	for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
+		if (!sdata->keys[i])
+			continue;
+#if 0
+		/* The interface is down at the moment, so there is not
+		 * really much point in disabling the keys at this point. */
+		memset(addr, 0xff, ETH_ALEN);
+		if (local->ops->set_key)
+			local->ops->set_key(dev, DISABLE_KEY, addr,
+					   local->keys[i], 0);
+#endif
+		ieee80211_key_free(sdata->keys[i]);
+	}
+
+	/* Shouldn't be necessary but won't hurt */
+	ieee80211_if_shutdown(dev);
+
+	switch (sdata->type) {
+	case IEEE80211_IF_TYPE_AP: {
+		/* Remove all virtual interfaces that use this BSS
+		 * as their sdata->bss */
+		struct ieee80211_sub_if_data *tsdata, *n;
+
+		list_for_each_entry_safe(tsdata, n, &local->sub_if_list, list) {
+			if (tsdata != sdata && tsdata->bss == &sdata->u.ap) {
+				printk(KERN_DEBUG "%s: removing virtual "
+				       "interface %s because its BSS interface"
+				       " is being removed\n",
+				       sdata->dev->name, tsdata->dev->name);
+				__ieee80211_if_del(local, tsdata);
+			}
+		}
+
+		kfree(sdata->u.ap.beacon_head);
+		kfree(sdata->u.ap.beacon_tail);
+		kfree(sdata->u.ap.generic_elem);
+
+		if (dev != local->mdev) {
+			struct sk_buff *skb;
+			while ((skb = skb_dequeue(&sdata->u.ap.ps_bc_buf))) {
+				local->total_ps_buffered--;
+				dev_kfree_skb(skb);
+			}
+		}
+
+		break;
+	}
+	case IEEE80211_IF_TYPE_WDS:
+		sta = sta_info_get(local, sdata->u.wds.remote_addr);
+		if (sta) {
+			sta_info_put(sta);
+			sta_info_free(sta, 0);
+		} else {
+#ifdef CONFIG_D80211_VERBOSE_DEBUG
+			printk(KERN_DEBUG "%s: Someone had deleted my STA "
+			       "entry for the WDS link\n", dev->name);
+#endif /* CONFIG_D80211_VERBOSE_DEBUG */
+		}
+		break;
+	case IEEE80211_IF_TYPE_STA:
+	case IEEE80211_IF_TYPE_IBSS:
+		kfree(sdata->u.sta.extra_ie);
+		sdata->u.sta.extra_ie = NULL;
+		kfree(sdata->u.sta.assocreq_ies);
+		sdata->u.sta.assocreq_ies = NULL;
+		kfree(sdata->u.sta.assocresp_ies);
+		sdata->u.sta.assocresp_ies = NULL;
+		if (sdata->u.sta.probe_resp) {
+			dev_kfree_skb(sdata->u.sta.probe_resp);
+			sdata->u.sta.probe_resp = NULL;
+		}
+
+		break;
+	case IEEE80211_IF_TYPE_MNTR:
+		dev->type = ARPHRD_ETHER;
+		break;
+	}
+
+	/* remove all STAs that are bound to this virtual interface */
+	sta_info_flush(local, dev);
+
+	memset(&sdata->u, 0, sizeof(sdata->u));
+	ieee80211_if_sdata_init(sdata);
+}
+
+/* Must be called with rtnl lock held. */
+void __ieee80211_if_del(struct ieee80211_local *local,
+			struct ieee80211_sub_if_data *sdata)
+{
+	struct net_device *dev = sdata->dev;
+
+	ieee80211_if_reinit(dev);
+	list_del(&sdata->list);
+	ieee80211_sysfs_remove_netdevice(dev);
+	unregister_netdevice(dev);
+	/* Except master interface, the net_device will be freed by
+	 * net_device->destructor (i. e. ieee80211_if_free). */
+}
+
+/* Must be called with rtnl lock held. */
+int ieee80211_if_remove(struct net_device *dev, const char *name, int id)
+{
+	struct ieee80211_local *local = dev->ieee80211_ptr;
+	struct ieee80211_sub_if_data *sdata, *n;
+
+	ASSERT_RTNL();
+
+	list_for_each_entry_safe(sdata, n, &local->sub_if_list, list) {
+		if ((sdata->type == id || id == -1) &&
+		    strcmp(name, sdata->dev->name) == 0 &&
+		    sdata->dev != local->mdev) {
+			__ieee80211_if_del(local, sdata);
+			return 0;
+		}
+	}
+	return -ENODEV;
+}
+
+void ieee80211_if_free(struct net_device *dev)
+{
+	struct ieee80211_local *local = dev->ieee80211_ptr;
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+	/* local->apdev must be NULL when freeing management interface */
+	BUG_ON(dev == local->apdev);
+	ieee80211_if_sdata_deinit(sdata);
+	free_netdev(dev);
+}
+
+/* Must be called with rtnl lock held. */
+void ieee80211_if_flush(struct net_device *dev)
+{
+	struct ieee80211_local *local = dev->ieee80211_ptr;
+	struct ieee80211_sub_if_data *sdata, *n;
+
+	ASSERT_RTNL();
+	list_for_each_entry_safe(sdata, n, &local->sub_if_list, list) {
+		__ieee80211_if_del(local, sdata);
+	}
+}
+
+void ieee80211_if_del(struct net_device *dev)
+{
+	struct ieee80211_local *local = dev->ieee80211_ptr;
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+	rtnl_lock();
+	if (sdata->type == IEEE80211_IF_TYPE_MGMT)
+		ieee80211_if_del_mgmt(local);
+	else
+		__ieee80211_if_del(local, sdata);
+	rtnl_unlock();
+}