--- /dev/null
+/*
+ * Host AP (software wireless LAN access point) driver for
+ * Intersil Prism2/2.5/3 - hostap.o module, common routines
+ *
+ * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
+ * <j@w1.fi>
+ * Copyright (c) 2002-2005, Jouni Malinen <j@w1.fi>
+ *
+ * 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. See README and COPYING for
+ * more details.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/proc_fs.h>
+#include <linux/if_arp.h>
+#include <linux/delay.h>
+#include <linux/random.h>
+#include <linux/workqueue.h>
+#include <linux/kmod.h>
+#include <linux/rtnetlink.h>
+#include <linux/wireless.h>
+#include <linux/etherdevice.h>
+#include <net/net_namespace.h>
+#include <net/iw_handler.h>
+#include <net/lib80211.h>
+#include <asm/uaccess.h>
+
+#include "hostap_wlan.h"
+#include "hostap_80211.h"
+#include "hostap_ap.h"
+#include "hostap.h"
+
+MODULE_AUTHOR("Jouni Malinen");
+MODULE_DESCRIPTION("Host AP common routines");
+MODULE_LICENSE("GPL");
+
+#define TX_TIMEOUT (2 * HZ)
+
+#define PRISM2_MAX_FRAME_SIZE 2304
+#define PRISM2_MIN_MTU 256
+/* FIX: */
+#define PRISM2_MAX_MTU (PRISM2_MAX_FRAME_SIZE - (6 /* LLC */ + 8 /* WEP */))
+
+
+struct net_device * hostap_add_interface(struct local_info *local,
+ int type, int rtnl_locked,
+ const char *prefix,
+ const char *name)
+{
+ struct net_device *dev, *mdev;
+ struct hostap_interface *iface;
+ int ret;
+
+ dev = alloc_etherdev(sizeof(struct hostap_interface));
+ if (dev == NULL)
+ return NULL;
+
+ iface = netdev_priv(dev);
+ iface->dev = dev;
+ iface->local = local;
+ iface->type = type;
+ list_add(&iface->list, &local->hostap_interfaces);
+
+ mdev = local->dev;
+ eth_hw_addr_inherit(dev, mdev);
+ dev->base_addr = mdev->base_addr;
+ dev->irq = mdev->irq;
+ dev->mem_start = mdev->mem_start;
+ dev->mem_end = mdev->mem_end;
+
+ hostap_setup_dev(dev, local, type);
+ dev->destructor = free_netdev;
+
+ sprintf(dev->name, "%s%s", prefix, name);
+ if (!rtnl_locked)
+ rtnl_lock();
+
+ SET_NETDEV_DEV(dev, mdev->dev.parent);
+ ret = register_netdevice(dev);
+
+ if (!rtnl_locked)
+ rtnl_unlock();
+
+ if (ret < 0) {
+ printk(KERN_WARNING "%s: failed to add new netdevice!\n",
+ dev->name);
+ free_netdev(dev);
+ return NULL;
+ }
+
+ printk(KERN_DEBUG "%s: registered netdevice %s\n",
+ mdev->name, dev->name);
+
+ return dev;
+}
+
+
+void hostap_remove_interface(struct net_device *dev, int rtnl_locked,
+ int remove_from_list)
+{
+ struct hostap_interface *iface;
+
+ if (!dev)
+ return;
+
+ iface = netdev_priv(dev);
+
+ if (remove_from_list) {
+ list_del(&iface->list);
+ }
+
+ if (dev == iface->local->ddev)
+ iface->local->ddev = NULL;
+ else if (dev == iface->local->apdev)
+ iface->local->apdev = NULL;
+ else if (dev == iface->local->stadev)
+ iface->local->stadev = NULL;
+
+ if (rtnl_locked)
+ unregister_netdevice(dev);
+ else
+ unregister_netdev(dev);
+
+ /* dev->destructor = free_netdev() will free the device data, including
+ * private data, when removing the device */
+}
+
+
+static inline int prism2_wds_special_addr(u8 *addr)
+{
+ if (addr[0] || addr[1] || addr[2] || addr[3] || addr[4] || addr[5])
+ return 0;
+
+ return 1;
+}
+
+
+int prism2_wds_add(local_info_t *local, u8 *remote_addr,
+ int rtnl_locked)
+{
+ struct net_device *dev;
+ struct list_head *ptr;
+ struct hostap_interface *iface, *empty, *match;
+
+ empty = match = NULL;
+ read_lock_bh(&local->iface_lock);
+ list_for_each(ptr, &local->hostap_interfaces) {
+ iface = list_entry(ptr, struct hostap_interface, list);
+ if (iface->type != HOSTAP_INTERFACE_WDS)
+ continue;
+
+ if (prism2_wds_special_addr(iface->u.wds.remote_addr))
+ empty = iface;
+ else if (ether_addr_equal(iface->u.wds.remote_addr, remote_addr)) {
+ match = iface;
+ break;
+ }
+ }
+ if (!match && empty && !prism2_wds_special_addr(remote_addr)) {
+ /* take pre-allocated entry into use */
+ memcpy(empty->u.wds.remote_addr, remote_addr, ETH_ALEN);
+ read_unlock_bh(&local->iface_lock);
+ printk(KERN_DEBUG "%s: using pre-allocated WDS netdevice %s\n",
+ local->dev->name, empty->dev->name);
+ return 0;
+ }
+ read_unlock_bh(&local->iface_lock);
+
+ if (!prism2_wds_special_addr(remote_addr)) {
+ if (match)
+ return -EEXIST;
+ hostap_add_sta(local->ap, remote_addr);
+ }
+
+ if (local->wds_connections >= local->wds_max_connections)
+ return -ENOBUFS;
+
+ /* verify that there is room for wds# postfix in the interface name */
+ if (strlen(local->dev->name) >= IFNAMSIZ - 5) {
+ printk(KERN_DEBUG "'%s' too long base device name\n",
+ local->dev->name);
+ return -EINVAL;
+ }
+
+ dev = hostap_add_interface(local, HOSTAP_INTERFACE_WDS, rtnl_locked,
+ local->ddev->name, "wds%d");
+ if (dev == NULL)
+ return -ENOMEM;
+
+ iface = netdev_priv(dev);
+ memcpy(iface->u.wds.remote_addr, remote_addr, ETH_ALEN);
+
+ local->wds_connections++;
+
+ return 0;
+}
+
+
+int prism2_wds_del(local_info_t *local, u8 *remote_addr,
+ int rtnl_locked, int do_not_remove)
+{
+ unsigned long flags;
+ struct list_head *ptr;
+ struct hostap_interface *iface, *selected = NULL;
+
+ write_lock_irqsave(&local->iface_lock, flags);
+ list_for_each(ptr, &local->hostap_interfaces) {
+ iface = list_entry(ptr, struct hostap_interface, list);
+ if (iface->type != HOSTAP_INTERFACE_WDS)
+ continue;
+
+ if (ether_addr_equal(iface->u.wds.remote_addr, remote_addr)) {
+ selected = iface;
+ break;
+ }
+ }
+ if (selected && !do_not_remove)
+ list_del(&selected->list);
+ write_unlock_irqrestore(&local->iface_lock, flags);
+
+ if (selected) {
+ if (do_not_remove)
+ eth_zero_addr(selected->u.wds.remote_addr);
+ else {
+ hostap_remove_interface(selected->dev, rtnl_locked, 0);
+ local->wds_connections--;
+ }
+ }
+
+ return selected ? 0 : -ENODEV;
+}
+
+
+u16 hostap_tx_callback_register(local_info_t *local,
+ void (*func)(struct sk_buff *, int ok, void *),
+ void *data)
+{
+ unsigned long flags;
+ struct hostap_tx_callback_info *entry;
+
+ entry = kmalloc(sizeof(*entry), GFP_KERNEL);
+ if (entry == NULL)
+ return 0;
+
+ entry->func = func;
+ entry->data = data;
+
+ spin_lock_irqsave(&local->lock, flags);
+ entry->idx = local->tx_callback ? local->tx_callback->idx + 1 : 1;
+ entry->next = local->tx_callback;
+ local->tx_callback = entry;
+ spin_unlock_irqrestore(&local->lock, flags);
+
+ return entry->idx;
+}
+
+
+int hostap_tx_callback_unregister(local_info_t *local, u16 idx)
+{
+ unsigned long flags;
+ struct hostap_tx_callback_info *cb, *prev = NULL;
+
+ spin_lock_irqsave(&local->lock, flags);
+ cb = local->tx_callback;
+ while (cb != NULL && cb->idx != idx) {
+ prev = cb;
+ cb = cb->next;
+ }
+ if (cb) {
+ if (prev == NULL)
+ local->tx_callback = cb->next;
+ else
+ prev->next = cb->next;
+ kfree(cb);
+ }
+ spin_unlock_irqrestore(&local->lock, flags);
+
+ return cb ? 0 : -1;
+}
+
+
+/* val is in host byte order */
+int hostap_set_word(struct net_device *dev, int rid, u16 val)
+{
+ struct hostap_interface *iface;
+ __le16 tmp = cpu_to_le16(val);
+ iface = netdev_priv(dev);
+ return iface->local->func->set_rid(dev, rid, &tmp, 2);
+}
+
+
+int hostap_set_string(struct net_device *dev, int rid, const char *val)
+{
+ struct hostap_interface *iface;
+ char buf[MAX_SSID_LEN + 2];
+ int len;
+
+ iface = netdev_priv(dev);
+ len = strlen(val);
+ if (len > MAX_SSID_LEN)
+ return -1;
+ memset(buf, 0, sizeof(buf));
+ buf[0] = len; /* little endian 16 bit word */
+ memcpy(buf + 2, val, len);
+
+ return iface->local->func->set_rid(dev, rid, &buf, MAX_SSID_LEN + 2);
+}
+
+
+u16 hostap_get_porttype(local_info_t *local)
+{
+ if (local->iw_mode == IW_MODE_ADHOC && local->pseudo_adhoc)
+ return HFA384X_PORTTYPE_PSEUDO_IBSS;
+ if (local->iw_mode == IW_MODE_ADHOC)
+ return HFA384X_PORTTYPE_IBSS;
+ if (local->iw_mode == IW_MODE_INFRA)
+ return HFA384X_PORTTYPE_BSS;
+ if (local->iw_mode == IW_MODE_REPEAT)
+ return HFA384X_PORTTYPE_WDS;
+ if (local->iw_mode == IW_MODE_MONITOR)
+ return HFA384X_PORTTYPE_PSEUDO_IBSS;
+ return HFA384X_PORTTYPE_HOSTAP;
+}
+
+
+int hostap_set_encryption(local_info_t *local)
+{
+ u16 val, old_val;
+ int i, keylen, len, idx;
+ char keybuf[WEP_KEY_LEN + 1];
+ enum { NONE, WEP, OTHER } encrypt_type;
+
+ idx = local->crypt_info.tx_keyidx;
+ if (local->crypt_info.crypt[idx] == NULL ||
+ local->crypt_info.crypt[idx]->ops == NULL)
+ encrypt_type = NONE;
+ else if (strcmp(local->crypt_info.crypt[idx]->ops->name, "WEP") == 0)
+ encrypt_type = WEP;
+ else
+ encrypt_type = OTHER;
+
+ if (local->func->get_rid(local->dev, HFA384X_RID_CNFWEPFLAGS, &val, 2,
+ 1) < 0) {
+ printk(KERN_DEBUG "Could not read current WEP flags.\n");
+ goto fail;
+ }
+ le16_to_cpus(&val);
+ old_val = val;
+
+ if (encrypt_type != NONE || local->privacy_invoked)
+ val |= HFA384X_WEPFLAGS_PRIVACYINVOKED;
+ else
+ val &= ~HFA384X_WEPFLAGS_PRIVACYINVOKED;
+
+ if (local->open_wep || encrypt_type == NONE ||
+ ((local->ieee_802_1x || local->wpa) && local->host_decrypt))
+ val &= ~HFA384X_WEPFLAGS_EXCLUDEUNENCRYPTED;
+ else
+ val |= HFA384X_WEPFLAGS_EXCLUDEUNENCRYPTED;
+
+ if ((encrypt_type != NONE || local->privacy_invoked) &&
+ (encrypt_type == OTHER || local->host_encrypt))
+ val |= HFA384X_WEPFLAGS_HOSTENCRYPT;
+ else
+ val &= ~HFA384X_WEPFLAGS_HOSTENCRYPT;
+ if ((encrypt_type != NONE || local->privacy_invoked) &&
+ (encrypt_type == OTHER || local->host_decrypt))
+ val |= HFA384X_WEPFLAGS_HOSTDECRYPT;
+ else
+ val &= ~HFA384X_WEPFLAGS_HOSTDECRYPT;
+
+ if (val != old_val &&
+ hostap_set_word(local->dev, HFA384X_RID_CNFWEPFLAGS, val)) {
+ printk(KERN_DEBUG "Could not write new WEP flags (0x%x)\n",
+ val);
+ goto fail;
+ }
+
+ if (encrypt_type != WEP)
+ return 0;
+
+ /* 104-bit support seems to require that all the keys are set to the
+ * same keylen */
+ keylen = 6; /* first 5 octets */
+ len = local->crypt_info.crypt[idx]->ops->get_key(keybuf, sizeof(keybuf), NULL,
+ local->crypt_info.crypt[idx]->priv);
+ if (idx >= 0 && idx < WEP_KEYS && len > 5)
+ keylen = WEP_KEY_LEN + 1; /* first 13 octets */
+
+ for (i = 0; i < WEP_KEYS; i++) {
+ memset(keybuf, 0, sizeof(keybuf));
+ if (local->crypt_info.crypt[i]) {
+ (void) local->crypt_info.crypt[i]->ops->get_key(
+ keybuf, sizeof(keybuf),
+ NULL, local->crypt_info.crypt[i]->priv);
+ }
+ if (local->func->set_rid(local->dev,
+ HFA384X_RID_CNFDEFAULTKEY0 + i,
+ keybuf, keylen)) {
+ printk(KERN_DEBUG "Could not set key %d (len=%d)\n",
+ i, keylen);
+ goto fail;
+ }
+ }
+ if (hostap_set_word(local->dev, HFA384X_RID_CNFWEPDEFAULTKEYID, idx)) {
+ printk(KERN_DEBUG "Could not set default keyid %d\n", idx);
+ goto fail;
+ }
+
+ return 0;
+
+ fail:
+ printk(KERN_DEBUG "%s: encryption setup failed\n", local->dev->name);
+ return -1;
+}
+
+
+int hostap_set_antsel(local_info_t *local)
+{
+ u16 val;
+ int ret = 0;
+
+ if (local->antsel_tx != HOSTAP_ANTSEL_DO_NOT_TOUCH &&
+ local->func->cmd(local->dev, HFA384X_CMDCODE_READMIF,
+ HFA386X_CR_TX_CONFIGURE,
+ NULL, &val) == 0) {
+ val &= ~(BIT(2) | BIT(1));
+ switch (local->antsel_tx) {
+ case HOSTAP_ANTSEL_DIVERSITY:
+ val |= BIT(1);
+ break;
+ case HOSTAP_ANTSEL_LOW:
+ break;
+ case HOSTAP_ANTSEL_HIGH:
+ val |= BIT(2);
+ break;
+ }
+
+ if (local->func->cmd(local->dev, HFA384X_CMDCODE_WRITEMIF,
+ HFA386X_CR_TX_CONFIGURE, &val, NULL)) {
+ printk(KERN_INFO "%s: setting TX AntSel failed\n",
+ local->dev->name);
+ ret = -1;
+ }
+ }
+
+ if (local->antsel_rx != HOSTAP_ANTSEL_DO_NOT_TOUCH &&
+ local->func->cmd(local->dev, HFA384X_CMDCODE_READMIF,
+ HFA386X_CR_RX_CONFIGURE,
+ NULL, &val) == 0) {
+ val &= ~(BIT(1) | BIT(0));
+ switch (local->antsel_rx) {
+ case HOSTAP_ANTSEL_DIVERSITY:
+ break;
+ case HOSTAP_ANTSEL_LOW:
+ val |= BIT(0);
+ break;
+ case HOSTAP_ANTSEL_HIGH:
+ val |= BIT(0) | BIT(1);
+ break;
+ }
+
+ if (local->func->cmd(local->dev, HFA384X_CMDCODE_WRITEMIF,
+ HFA386X_CR_RX_CONFIGURE, &val, NULL)) {
+ printk(KERN_INFO "%s: setting RX AntSel failed\n",
+ local->dev->name);
+ ret = -1;
+ }
+ }
+
+ return ret;
+}
+
+
+int hostap_set_roaming(local_info_t *local)
+{
+ u16 val;
+
+ switch (local->host_roaming) {
+ case 1:
+ val = HFA384X_ROAMING_HOST;
+ break;
+ case 2:
+ val = HFA384X_ROAMING_DISABLED;
+ break;
+ case 0:
+ default:
+ val = HFA384X_ROAMING_FIRMWARE;
+ break;
+ }
+
+ return hostap_set_word(local->dev, HFA384X_RID_CNFROAMINGMODE, val);
+}
+
+
+int hostap_set_auth_algs(local_info_t *local)
+{
+ int val = local->auth_algs;
+ /* At least STA f/w v0.6.2 seems to have issues with cnfAuthentication
+ * set to include both Open and Shared Key flags. It tries to use
+ * Shared Key authentication in that case even if WEP keys are not
+ * configured.. STA f/w v0.7.6 is able to handle such configuration,
+ * but it is unknown when this was fixed between 0.6.2 .. 0.7.6. */
+ if (local->sta_fw_ver < PRISM2_FW_VER(0,7,0) &&
+ val != PRISM2_AUTH_OPEN && val != PRISM2_AUTH_SHARED_KEY)
+ val = PRISM2_AUTH_OPEN;
+
+ if (hostap_set_word(local->dev, HFA384X_RID_CNFAUTHENTICATION, val)) {
+ printk(KERN_INFO "%s: cnfAuthentication setting to 0x%x "
+ "failed\n", local->dev->name, local->auth_algs);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+
+void hostap_dump_rx_header(const char *name, const struct hfa384x_rx_frame *rx)
+{
+ u16 status, fc;
+
+ status = __le16_to_cpu(rx->status);
+
+ printk(KERN_DEBUG "%s: RX status=0x%04x (port=%d, type=%d, "
+ "fcserr=%d) silence=%d signal=%d rate=%d rxflow=%d; "
+ "jiffies=%ld\n",
+ name, status, (status >> 8) & 0x07, status >> 13, status & 1,
+ rx->silence, rx->signal, rx->rate, rx->rxflow, jiffies);
+
+ fc = __le16_to_cpu(rx->frame_control);
+ printk(KERN_DEBUG " FC=0x%04x (type=%d:%d) dur=0x%04x seq=0x%04x "
+ "data_len=%d%s%s\n",
+ fc, (fc & IEEE80211_FCTL_FTYPE) >> 2,
+ (fc & IEEE80211_FCTL_STYPE) >> 4,
+ __le16_to_cpu(rx->duration_id), __le16_to_cpu(rx->seq_ctrl),
+ __le16_to_cpu(rx->data_len),
+ fc & IEEE80211_FCTL_TODS ? " [ToDS]" : "",
+ fc & IEEE80211_FCTL_FROMDS ? " [FromDS]" : "");
+
+ printk(KERN_DEBUG " A1=%pM A2=%pM A3=%pM A4=%pM\n",
+ rx->addr1, rx->addr2, rx->addr3, rx->addr4);
+
+ printk(KERN_DEBUG " dst=%pM src=%pM len=%d\n",
+ rx->dst_addr, rx->src_addr,
+ __be16_to_cpu(rx->len));
+}
+
+
+void hostap_dump_tx_header(const char *name, const struct hfa384x_tx_frame *tx)
+{
+ u16 fc;
+
+ printk(KERN_DEBUG "%s: TX status=0x%04x retry_count=%d tx_rate=%d "
+ "tx_control=0x%04x; jiffies=%ld\n",
+ name, __le16_to_cpu(tx->status), tx->retry_count, tx->tx_rate,
+ __le16_to_cpu(tx->tx_control), jiffies);
+
+ fc = __le16_to_cpu(tx->frame_control);
+ printk(KERN_DEBUG " FC=0x%04x (type=%d:%d) dur=0x%04x seq=0x%04x "
+ "data_len=%d%s%s\n",
+ fc, (fc & IEEE80211_FCTL_FTYPE) >> 2,
+ (fc & IEEE80211_FCTL_STYPE) >> 4,
+ __le16_to_cpu(tx->duration_id), __le16_to_cpu(tx->seq_ctrl),
+ __le16_to_cpu(tx->data_len),
+ fc & IEEE80211_FCTL_TODS ? " [ToDS]" : "",
+ fc & IEEE80211_FCTL_FROMDS ? " [FromDS]" : "");
+
+ printk(KERN_DEBUG " A1=%pM A2=%pM A3=%pM A4=%pM\n",
+ tx->addr1, tx->addr2, tx->addr3, tx->addr4);
+
+ printk(KERN_DEBUG " dst=%pM src=%pM len=%d\n",
+ tx->dst_addr, tx->src_addr,
+ __be16_to_cpu(tx->len));
+}
+
+
+static int hostap_80211_header_parse(const struct sk_buff *skb,
+ unsigned char *haddr)
+{
+ memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */
+ return ETH_ALEN;
+}
+
+
+int hostap_80211_get_hdrlen(__le16 fc)
+{
+ if (ieee80211_is_data(fc) && ieee80211_has_a4 (fc))
+ return 30; /* Addr4 */
+ else if (ieee80211_is_cts(fc) || ieee80211_is_ack(fc))
+ return 10;
+ else if (ieee80211_is_ctl(fc))
+ return 16;
+
+ return 24;
+}
+
+
+static int prism2_close(struct net_device *dev)
+{
+ struct hostap_interface *iface;
+ local_info_t *local;
+
+ PDEBUG(DEBUG_FLOW, "%s: prism2_close\n", dev->name);
+
+ iface = netdev_priv(dev);
+ local = iface->local;
+
+ if (dev == local->ddev) {
+ prism2_sta_deauth(local, WLAN_REASON_DEAUTH_LEAVING);
+ }
+#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
+ if (!local->hostapd && dev == local->dev &&
+ (!local->func->card_present || local->func->card_present(local)) &&
+ local->hw_ready && local->ap && local->iw_mode == IW_MODE_MASTER)
+ hostap_deauth_all_stas(dev, local->ap, 1);
+#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
+
+ if (dev == local->dev) {
+ local->func->hw_shutdown(dev, HOSTAP_HW_ENABLE_CMDCOMPL);
+ }
+
+ if (netif_running(dev)) {
+ netif_stop_queue(dev);
+ netif_device_detach(dev);
+ }
+
+ cancel_work_sync(&local->reset_queue);
+ cancel_work_sync(&local->set_multicast_list_queue);
+ cancel_work_sync(&local->set_tim_queue);
+#ifndef PRISM2_NO_STATION_MODES
+ cancel_work_sync(&local->info_queue);
+#endif
+ cancel_work_sync(&local->comms_qual_update);
+
+ module_put(local->hw_module);
+
+ local->num_dev_open--;
+
+ if (dev != local->dev && local->dev->flags & IFF_UP &&
+ local->master_dev_auto_open && local->num_dev_open == 1) {
+ /* Close master radio interface automatically if it was also
+ * opened automatically and we are now closing the last
+ * remaining non-master device. */
+ dev_close(local->dev);
+ }
+
+ return 0;
+}
+
+
+static int prism2_open(struct net_device *dev)
+{
+ struct hostap_interface *iface;
+ local_info_t *local;
+
+ PDEBUG(DEBUG_FLOW, "%s: prism2_open\n", dev->name);
+
+ iface = netdev_priv(dev);
+ local = iface->local;
+
+ if (local->no_pri) {
+ printk(KERN_DEBUG "%s: could not set interface UP - no PRI "
+ "f/w\n", dev->name);
+ return -ENODEV;
+ }
+
+ if ((local->func->card_present && !local->func->card_present(local)) ||
+ local->hw_downloading)
+ return -ENODEV;
+
+ if (!try_module_get(local->hw_module))
+ return -ENODEV;
+ local->num_dev_open++;
+
+ if (!local->dev_enabled && local->func->hw_enable(dev, 1)) {
+ printk(KERN_WARNING "%s: could not enable MAC port\n",
+ dev->name);
+ prism2_close(dev);
+ return -ENODEV;
+ }
+ if (!local->dev_enabled)
+ prism2_callback(local, PRISM2_CALLBACK_ENABLE);
+ local->dev_enabled = 1;
+
+ if (dev != local->dev && !(local->dev->flags & IFF_UP)) {
+ /* Master radio interface is needed for all operation, so open
+ * it automatically when any virtual net_device is opened. */
+ local->master_dev_auto_open = 1;
+ dev_open(local->dev);
+ }
+
+ netif_device_attach(dev);
+ netif_start_queue(dev);
+
+ return 0;
+}
+
+
+static int prism2_set_mac_address(struct net_device *dev, void *p)
+{
+ struct hostap_interface *iface;
+ local_info_t *local;
+ struct list_head *ptr;
+ struct sockaddr *addr = p;
+
+ iface = netdev_priv(dev);
+ local = iface->local;
+
+ if (local->func->set_rid(dev, HFA384X_RID_CNFOWNMACADDR, addr->sa_data,
+ ETH_ALEN) < 0 || local->func->reset_port(dev))
+ return -EINVAL;
+
+ read_lock_bh(&local->iface_lock);
+ list_for_each(ptr, &local->hostap_interfaces) {
+ iface = list_entry(ptr, struct hostap_interface, list);
+ memcpy(iface->dev->dev_addr, addr->sa_data, ETH_ALEN);
+ }
+ memcpy(local->dev->dev_addr, addr->sa_data, ETH_ALEN);
+ read_unlock_bh(&local->iface_lock);
+
+ return 0;
+}
+
+
+/* TODO: to be further implemented as soon as Prism2 fully supports
+ * GroupAddresses and correct documentation is available */
+void hostap_set_multicast_list_queue(struct work_struct *work)
+{
+ local_info_t *local =
+ container_of(work, local_info_t, set_multicast_list_queue);
+ struct net_device *dev = local->dev;
+
+ if (hostap_set_word(dev, HFA384X_RID_PROMISCUOUSMODE,
+ local->is_promisc)) {
+ printk(KERN_INFO "%s: %sabling promiscuous mode failed\n",
+ dev->name, local->is_promisc ? "en" : "dis");
+ }
+}
+
+
+static void hostap_set_multicast_list(struct net_device *dev)
+{
+#if 0
+ /* FIX: promiscuous mode seems to be causing a lot of problems with
+ * some station firmware versions (FCSErr frames, invalid MACPort, etc.
+ * corrupted incoming frames). This code is now commented out while the
+ * problems are investigated. */
+ struct hostap_interface *iface;
+ local_info_t *local;
+
+ iface = netdev_priv(dev);
+ local = iface->local;
+ if ((dev->flags & IFF_ALLMULTI) || (dev->flags & IFF_PROMISC)) {
+ local->is_promisc = 1;
+ } else {
+ local->is_promisc = 0;
+ }
+
+ schedule_work(&local->set_multicast_list_queue);
+#endif
+}
+
+
+static int prism2_change_mtu(struct net_device *dev, int new_mtu)
+{
+ if (new_mtu < PRISM2_MIN_MTU || new_mtu > PRISM2_MAX_MTU)
+ return -EINVAL;
+
+ dev->mtu = new_mtu;
+ return 0;
+}
+
+
+static void prism2_tx_timeout(struct net_device *dev)
+{
+ struct hostap_interface *iface;
+ local_info_t *local;
+ struct hfa384x_regs regs;
+
+ iface = netdev_priv(dev);
+ local = iface->local;
+
+ printk(KERN_WARNING "%s Tx timed out! Resetting card\n", dev->name);
+ netif_stop_queue(local->dev);
+
+ local->func->read_regs(dev, ®s);
+ printk(KERN_DEBUG "%s: CMD=%04x EVSTAT=%04x "
+ "OFFSET0=%04x OFFSET1=%04x SWSUPPORT0=%04x\n",
+ dev->name, regs.cmd, regs.evstat, regs.offset0, regs.offset1,
+ regs.swsupport0);
+
+ local->func->schedule_reset(local);
+}
+
+const struct header_ops hostap_80211_ops = {
+ .create = eth_header,
+ .cache = eth_header_cache,
+ .cache_update = eth_header_cache_update,
+ .parse = hostap_80211_header_parse,
+};
+EXPORT_SYMBOL(hostap_80211_ops);
+
+
+static const struct net_device_ops hostap_netdev_ops = {
+ .ndo_start_xmit = hostap_data_start_xmit,
+
+ .ndo_open = prism2_open,
+ .ndo_stop = prism2_close,
+ .ndo_do_ioctl = hostap_ioctl,
+ .ndo_set_mac_address = prism2_set_mac_address,
+ .ndo_set_rx_mode = hostap_set_multicast_list,
+ .ndo_change_mtu = prism2_change_mtu,
+ .ndo_tx_timeout = prism2_tx_timeout,
+ .ndo_validate_addr = eth_validate_addr,
+};
+
+static const struct net_device_ops hostap_mgmt_netdev_ops = {
+ .ndo_start_xmit = hostap_mgmt_start_xmit,
+
+ .ndo_open = prism2_open,
+ .ndo_stop = prism2_close,
+ .ndo_do_ioctl = hostap_ioctl,
+ .ndo_set_mac_address = prism2_set_mac_address,
+ .ndo_set_rx_mode = hostap_set_multicast_list,
+ .ndo_change_mtu = prism2_change_mtu,
+ .ndo_tx_timeout = prism2_tx_timeout,
+ .ndo_validate_addr = eth_validate_addr,
+};
+
+static const struct net_device_ops hostap_master_ops = {
+ .ndo_start_xmit = hostap_master_start_xmit,
+
+ .ndo_open = prism2_open,
+ .ndo_stop = prism2_close,
+ .ndo_do_ioctl = hostap_ioctl,
+ .ndo_set_mac_address = prism2_set_mac_address,
+ .ndo_set_rx_mode = hostap_set_multicast_list,
+ .ndo_change_mtu = prism2_change_mtu,
+ .ndo_tx_timeout = prism2_tx_timeout,
+ .ndo_validate_addr = eth_validate_addr,
+};
+
+void hostap_setup_dev(struct net_device *dev, local_info_t *local,
+ int type)
+{
+ struct hostap_interface *iface;
+
+ iface = netdev_priv(dev);
+ ether_setup(dev);
+ dev->priv_flags &= ~IFF_TX_SKB_SHARING;
+
+ /* kernel callbacks */
+ if (iface) {
+ /* Currently, we point to the proper spy_data only on
+ * the main_dev. This could be fixed. Jean II */
+ iface->wireless_data.spy_data = &iface->spy_data;
+ dev->wireless_data = &iface->wireless_data;
+ }
+ dev->wireless_handlers = &hostap_iw_handler_def;
+ dev->watchdog_timeo = TX_TIMEOUT;
+
+ switch(type) {
+ case HOSTAP_INTERFACE_AP:
+ dev->tx_queue_len = 0; /* use main radio device queue */
+ dev->netdev_ops = &hostap_mgmt_netdev_ops;
+ dev->type = ARPHRD_IEEE80211;
+ dev->header_ops = &hostap_80211_ops;
+ break;
+ case HOSTAP_INTERFACE_MASTER:
+ dev->netdev_ops = &hostap_master_ops;
+ break;
+ default:
+ dev->tx_queue_len = 0; /* use main radio device queue */
+ dev->netdev_ops = &hostap_netdev_ops;
+ }
+
+ dev->mtu = local->mtu;
+
+
+ dev->ethtool_ops = &prism2_ethtool_ops;
+
+}
+
+static int hostap_enable_hostapd(local_info_t *local, int rtnl_locked)
+{
+ struct net_device *dev = local->dev;
+
+ if (local->apdev)
+ return -EEXIST;
+
+ printk(KERN_DEBUG "%s: enabling hostapd mode\n", dev->name);
+
+ local->apdev = hostap_add_interface(local, HOSTAP_INTERFACE_AP,
+ rtnl_locked, local->ddev->name,
+ "ap");
+ if (local->apdev == NULL)
+ return -ENOMEM;
+
+ return 0;
+}
+
+
+static int hostap_disable_hostapd(local_info_t *local, int rtnl_locked)
+{
+ struct net_device *dev = local->dev;
+
+ printk(KERN_DEBUG "%s: disabling hostapd mode\n", dev->name);
+
+ hostap_remove_interface(local->apdev, rtnl_locked, 1);
+ local->apdev = NULL;
+
+ return 0;
+}
+
+
+static int hostap_enable_hostapd_sta(local_info_t *local, int rtnl_locked)
+{
+ struct net_device *dev = local->dev;
+
+ if (local->stadev)
+ return -EEXIST;
+
+ printk(KERN_DEBUG "%s: enabling hostapd STA mode\n", dev->name);
+
+ local->stadev = hostap_add_interface(local, HOSTAP_INTERFACE_STA,
+ rtnl_locked, local->ddev->name,
+ "sta");
+ if (local->stadev == NULL)
+ return -ENOMEM;
+
+ return 0;
+}
+
+
+static int hostap_disable_hostapd_sta(local_info_t *local, int rtnl_locked)
+{
+ struct net_device *dev = local->dev;
+
+ printk(KERN_DEBUG "%s: disabling hostapd mode\n", dev->name);
+
+ hostap_remove_interface(local->stadev, rtnl_locked, 1);
+ local->stadev = NULL;
+
+ return 0;
+}
+
+
+int hostap_set_hostapd(local_info_t *local, int val, int rtnl_locked)
+{
+ int ret;
+
+ if (val < 0 || val > 1)
+ return -EINVAL;
+
+ if (local->hostapd == val)
+ return 0;
+
+ if (val) {
+ ret = hostap_enable_hostapd(local, rtnl_locked);
+ if (ret == 0)
+ local->hostapd = 1;
+ } else {
+ local->hostapd = 0;
+ ret = hostap_disable_hostapd(local, rtnl_locked);
+ if (ret != 0)
+ local->hostapd = 1;
+ }
+
+ return ret;
+}
+
+
+int hostap_set_hostapd_sta(local_info_t *local, int val, int rtnl_locked)
+{
+ int ret;
+
+ if (val < 0 || val > 1)
+ return -EINVAL;
+
+ if (local->hostapd_sta == val)
+ return 0;
+
+ if (val) {
+ ret = hostap_enable_hostapd_sta(local, rtnl_locked);
+ if (ret == 0)
+ local->hostapd_sta = 1;
+ } else {
+ local->hostapd_sta = 0;
+ ret = hostap_disable_hostapd_sta(local, rtnl_locked);
+ if (ret != 0)
+ local->hostapd_sta = 1;
+ }
+
+
+ return ret;
+}
+
+
+int prism2_update_comms_qual(struct net_device *dev)
+{
+ struct hostap_interface *iface;
+ local_info_t *local;
+ int ret = 0;
+ struct hfa384x_comms_quality sq;
+
+ iface = netdev_priv(dev);
+ local = iface->local;
+ if (!local->sta_fw_ver)
+ ret = -1;
+ else if (local->sta_fw_ver >= PRISM2_FW_VER(1,3,1)) {
+ if (local->func->get_rid(local->dev,
+ HFA384X_RID_DBMCOMMSQUALITY,
+ &sq, sizeof(sq), 1) >= 0) {
+ local->comms_qual = (s16) le16_to_cpu(sq.comm_qual);
+ local->avg_signal = (s16) le16_to_cpu(sq.signal_level);
+ local->avg_noise = (s16) le16_to_cpu(sq.noise_level);
+ local->last_comms_qual_update = jiffies;
+ } else
+ ret = -1;
+ } else {
+ if (local->func->get_rid(local->dev, HFA384X_RID_COMMSQUALITY,
+ &sq, sizeof(sq), 1) >= 0) {
+ local->comms_qual = le16_to_cpu(sq.comm_qual);
+ local->avg_signal = HFA384X_LEVEL_TO_dBm(
+ le16_to_cpu(sq.signal_level));
+ local->avg_noise = HFA384X_LEVEL_TO_dBm(
+ le16_to_cpu(sq.noise_level));
+ local->last_comms_qual_update = jiffies;
+ } else
+ ret = -1;
+ }
+
+ return ret;
+}
+
+
+int prism2_sta_send_mgmt(local_info_t *local, u8 *dst, u16 stype,
+ u8 *body, size_t bodylen)
+{
+ struct sk_buff *skb;
+ struct hostap_ieee80211_mgmt *mgmt;
+ struct hostap_skb_tx_data *meta;
+ struct net_device *dev = local->dev;
+
+ skb = dev_alloc_skb(IEEE80211_MGMT_HDR_LEN + bodylen);
+ if (skb == NULL)
+ return -ENOMEM;
+
+ mgmt = (struct hostap_ieee80211_mgmt *)
+ skb_put(skb, IEEE80211_MGMT_HDR_LEN);
+ memset(mgmt, 0, IEEE80211_MGMT_HDR_LEN);
+ mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
+ memcpy(mgmt->da, dst, ETH_ALEN);
+ memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+ memcpy(mgmt->bssid, dst, ETH_ALEN);
+ if (body)
+ memcpy(skb_put(skb, bodylen), body, bodylen);
+
+ meta = (struct hostap_skb_tx_data *) skb->cb;
+ memset(meta, 0, sizeof(*meta));
+ meta->magic = HOSTAP_SKB_TX_DATA_MAGIC;
+ meta->iface = netdev_priv(dev);
+
+ skb->dev = dev;
+ skb_reset_mac_header(skb);
+ skb_reset_network_header(skb);
+ dev_queue_xmit(skb);
+
+ return 0;
+}
+
+
+int prism2_sta_deauth(local_info_t *local, u16 reason)
+{
+ union iwreq_data wrqu;
+ int ret;
+ __le16 val = cpu_to_le16(reason);
+
+ if (local->iw_mode != IW_MODE_INFRA ||
+ is_zero_ether_addr(local->bssid) ||
+ ether_addr_equal(local->bssid, "\x44\x44\x44\x44\x44\x44"))
+ return 0;
+
+ ret = prism2_sta_send_mgmt(local, local->bssid, IEEE80211_STYPE_DEAUTH,
+ (u8 *) &val, 2);
+ eth_zero_addr(wrqu.ap_addr.sa_data);
+ wireless_send_event(local->dev, SIOCGIWAP, &wrqu, NULL);
+ return ret;
+}
+
+
+struct proc_dir_entry *hostap_proc;
+
+static int __init hostap_init(void)
+{
+ if (init_net.proc_net != NULL) {
+ hostap_proc = proc_mkdir("hostap", init_net.proc_net);
+ if (!hostap_proc)
+ printk(KERN_WARNING "Failed to mkdir "
+ "/proc/net/hostap\n");
+ } else
+ hostap_proc = NULL;
+
+ return 0;
+}
+
+
+static void __exit hostap_exit(void)
+{
+ if (hostap_proc != NULL) {
+ hostap_proc = NULL;
+ remove_proc_entry("hostap", init_net.proc_net);
+ }
+}
+
+
+EXPORT_SYMBOL(hostap_set_word);
+EXPORT_SYMBOL(hostap_set_string);
+EXPORT_SYMBOL(hostap_get_porttype);
+EXPORT_SYMBOL(hostap_set_encryption);
+EXPORT_SYMBOL(hostap_set_antsel);
+EXPORT_SYMBOL(hostap_set_roaming);
+EXPORT_SYMBOL(hostap_set_auth_algs);
+EXPORT_SYMBOL(hostap_dump_rx_header);
+EXPORT_SYMBOL(hostap_dump_tx_header);
+EXPORT_SYMBOL(hostap_80211_get_hdrlen);
+EXPORT_SYMBOL(hostap_setup_dev);
+EXPORT_SYMBOL(hostap_set_multicast_list_queue);
+EXPORT_SYMBOL(hostap_set_hostapd);
+EXPORT_SYMBOL(hostap_set_hostapd_sta);
+EXPORT_SYMBOL(hostap_add_interface);
+EXPORT_SYMBOL(hostap_remove_interface);
+EXPORT_SYMBOL(prism2_update_comms_qual);
+
+module_init(hostap_init);
+module_exit(hostap_exit);
Code Review / kvmfornfv.git / blobdiff