Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 1 | /* src/p80211/p80211knetdev.c |
| 2 | * |
| 3 | * Linux Kernel net device interface |
| 4 | * |
| 5 | * Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved. |
| 6 | * -------------------------------------------------------------------- |
| 7 | * |
| 8 | * linux-wlan |
| 9 | * |
| 10 | * The contents of this file are subject to the Mozilla Public |
| 11 | * License Version 1.1 (the "License"); you may not use this file |
| 12 | * except in compliance with the License. You may obtain a copy of |
| 13 | * the License at http://www.mozilla.org/MPL/ |
| 14 | * |
| 15 | * Software distributed under the License is distributed on an "AS |
| 16 | * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or |
| 17 | * implied. See the License for the specific language governing |
| 18 | * rights and limitations under the License. |
| 19 | * |
| 20 | * Alternatively, the contents of this file may be used under the |
| 21 | * terms of the GNU Public License version 2 (the "GPL"), in which |
| 22 | * case the provisions of the GPL are applicable instead of the |
| 23 | * above. If you wish to allow the use of your version of this file |
| 24 | * only under the terms of the GPL and not to allow others to use |
| 25 | * your version of this file under the MPL, indicate your decision |
| 26 | * by deleting the provisions above and replace them with the notice |
| 27 | * and other provisions required by the GPL. If you do not delete |
| 28 | * the provisions above, a recipient may use your version of this |
| 29 | * file under either the MPL or the GPL. |
| 30 | * |
| 31 | * -------------------------------------------------------------------- |
| 32 | * |
| 33 | * Inquiries regarding the linux-wlan Open Source project can be |
| 34 | * made directly to: |
| 35 | * |
| 36 | * AbsoluteValue Systems Inc. |
| 37 | * info@linux-wlan.com |
| 38 | * http://www.linux-wlan.com |
| 39 | * |
| 40 | * -------------------------------------------------------------------- |
| 41 | * |
| 42 | * Portions of the development of this software were funded by |
| 43 | * Intersil Corporation as part of PRISM(R) chipset product development. |
| 44 | * |
| 45 | * -------------------------------------------------------------------- |
| 46 | * |
| 47 | * The functions required for a Linux network device are defined here. |
| 48 | * |
| 49 | * -------------------------------------------------------------------- |
| 50 | */ |
| 51 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 52 | #include <linux/module.h> |
| 53 | #include <linux/kernel.h> |
| 54 | #include <linux/sched.h> |
| 55 | #include <linux/types.h> |
| 56 | #include <linux/skbuff.h> |
| 57 | #include <linux/slab.h> |
| 58 | #include <linux/proc_fs.h> |
| 59 | #include <linux/interrupt.h> |
| 60 | #include <linux/netdevice.h> |
| 61 | #include <linux/kmod.h> |
| 62 | #include <linux/if_arp.h> |
| 63 | #include <linux/wireless.h> |
| 64 | #include <linux/sockios.h> |
| 65 | #include <linux/etherdevice.h> |
Moritz Muehlenhoff | 28b17a4 | 2009-01-21 22:00:41 +0100 | [diff] [blame] | 66 | #include <linux/if_ether.h> |
Moritz Muehlenhoff | ae26230 | 2009-01-21 22:00:45 +0100 | [diff] [blame] | 67 | #include <linux/byteorder/generic.h> |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 68 | #include <linux/bitops.h> |
| 69 | #include <linux/uaccess.h> |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 70 | #include <asm/byteorder.h> |
| 71 | |
| 72 | #ifdef SIOCETHTOOL |
| 73 | #include <linux/ethtool.h> |
| 74 | #endif |
| 75 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 76 | #include <net/iw_handler.h> |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 77 | #include <net/net_namespace.h> |
Karl Relton | cb3126e | 2010-06-03 23:04:06 +0100 | [diff] [blame] | 78 | #include <net/cfg80211.h> |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 79 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 80 | #include "p80211types.h" |
| 81 | #include "p80211hdr.h" |
| 82 | #include "p80211conv.h" |
| 83 | #include "p80211mgmt.h" |
| 84 | #include "p80211msg.h" |
| 85 | #include "p80211netdev.h" |
| 86 | #include "p80211ioctl.h" |
| 87 | #include "p80211req.h" |
| 88 | #include "p80211metastruct.h" |
| 89 | #include "p80211metadef.h" |
| 90 | |
Karl Relton | cb3126e | 2010-06-03 23:04:06 +0100 | [diff] [blame] | 91 | #include "cfg80211.c" |
| 92 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 93 | /* Support functions */ |
| 94 | static void p80211netdev_rx_bh(unsigned long arg); |
| 95 | |
| 96 | /* netdevice method functions */ |
Mithlesh Thukral | 297f06c | 2009-06-10 19:36:11 +0530 | [diff] [blame] | 97 | static int p80211knetdev_init(netdevice_t *netdev); |
| 98 | static struct net_device_stats *p80211knetdev_get_stats(netdevice_t *netdev); |
| 99 | static int p80211knetdev_open(netdevice_t *netdev); |
| 100 | static int p80211knetdev_stop(netdevice_t *netdev); |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 101 | static int p80211knetdev_hard_start_xmit(struct sk_buff *skb, |
Mithlesh Thukral | 297f06c | 2009-06-10 19:36:11 +0530 | [diff] [blame] | 102 | netdevice_t *netdev); |
| 103 | static void p80211knetdev_set_multicast_list(netdevice_t *dev); |
| 104 | static int p80211knetdev_do_ioctl(netdevice_t *dev, struct ifreq *ifr, |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 105 | int cmd); |
Mithlesh Thukral | 297f06c | 2009-06-10 19:36:11 +0530 | [diff] [blame] | 106 | static int p80211knetdev_set_mac_address(netdevice_t *dev, void *addr); |
| 107 | static void p80211knetdev_tx_timeout(netdevice_t *netdev); |
| 108 | static int p80211_rx_typedrop(wlandevice_t *wlandev, u16 fc); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 109 | |
Solomon Peachy | e02c69b | 2008-10-29 10:42:59 -0400 | [diff] [blame] | 110 | int wlan_watchdog = 5000; |
| 111 | module_param(wlan_watchdog, int, 0644); |
| 112 | MODULE_PARM_DESC(wlan_watchdog, "transmit timeout in milliseconds"); |
| 113 | |
| 114 | int wlan_wext_write = 1; |
| 115 | module_param(wlan_wext_write, int, 0644); |
| 116 | MODULE_PARM_DESC(wlan_wext_write, "enable write wireless extensions"); |
| 117 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 118 | /*---------------------------------------------------------------- |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 119 | * p80211knetdev_init |
| 120 | * |
| 121 | * Init method for a Linux netdevice. Called in response to |
| 122 | * register_netdev. |
| 123 | * |
| 124 | * Arguments: |
| 125 | * none |
| 126 | * |
| 127 | * Returns: |
| 128 | * nothing |
| 129 | ----------------------------------------------------------------*/ |
Mithlesh Thukral | 297f06c | 2009-06-10 19:36:11 +0530 | [diff] [blame] | 130 | static int p80211knetdev_init(netdevice_t *netdev) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 131 | { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 132 | /* Called in response to register_netdev */ |
| 133 | /* This is usually the probe function, but the probe has */ |
| 134 | /* already been done by the MSD and the create_kdev */ |
| 135 | /* function. All we do here is return success */ |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 136 | return 0; |
| 137 | } |
| 138 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 139 | /*---------------------------------------------------------------- |
| 140 | * p80211knetdev_get_stats |
| 141 | * |
| 142 | * Statistics retrieval for linux netdevices. Here we're reporting |
| 143 | * the Linux i/f level statistics. Hence, for the primary numbers, |
| 144 | * we don't want to report the numbers from the MIB. Eventually, |
| 145 | * it might be useful to collect some of the error counters though. |
| 146 | * |
| 147 | * Arguments: |
| 148 | * netdev Linux netdevice |
| 149 | * |
| 150 | * Returns: |
| 151 | * the address of the statistics structure |
| 152 | ----------------------------------------------------------------*/ |
Sebastiaan de Haan | aa8c2a0 | 2012-02-17 21:14:55 +0100 | [diff] [blame] | 153 | static struct net_device_stats *p80211knetdev_get_stats(netdevice_t *netdev) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 154 | { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 155 | wlandevice_t *wlandev = netdev->ml_priv; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 156 | |
| 157 | /* TODO: review the MIB stats for items that correspond to |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 158 | linux stats */ |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 159 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 160 | return &(wlandev->linux_stats); |
| 161 | } |
| 162 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 163 | /*---------------------------------------------------------------- |
| 164 | * p80211knetdev_open |
| 165 | * |
| 166 | * Linux netdevice open method. Following a successful call here, |
| 167 | * the device is supposed to be ready for tx and rx. In our |
| 168 | * situation that may not be entirely true due to the state of the |
| 169 | * MAC below. |
| 170 | * |
| 171 | * Arguments: |
| 172 | * netdev Linux network device structure |
| 173 | * |
| 174 | * Returns: |
| 175 | * zero on success, non-zero otherwise |
| 176 | ----------------------------------------------------------------*/ |
Mithlesh Thukral | 297f06c | 2009-06-10 19:36:11 +0530 | [diff] [blame] | 177 | static int p80211knetdev_open(netdevice_t *netdev) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 178 | { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 179 | int result = 0; /* success */ |
| 180 | wlandevice_t *wlandev = netdev->ml_priv; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 181 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 182 | /* Check to make sure the MSD is running */ |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 183 | if (wlandev->msdstate != WLAN_MSD_RUNNING) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 184 | return -ENODEV; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 185 | |
| 186 | /* Tell the MSD to open */ |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 187 | if (wlandev->open != NULL) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 188 | result = wlandev->open(wlandev); |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 189 | if (result == 0) { |
Solomon Peachy | cbec30c | 2008-10-29 10:42:57 -0400 | [diff] [blame] | 190 | netif_start_queue(wlandev->netdev); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 191 | wlandev->state = WLAN_DEVICE_OPEN; |
| 192 | } |
| 193 | } else { |
| 194 | result = -EAGAIN; |
| 195 | } |
| 196 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 197 | return result; |
| 198 | } |
| 199 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 200 | /*---------------------------------------------------------------- |
| 201 | * p80211knetdev_stop |
| 202 | * |
| 203 | * Linux netdevice stop (close) method. Following this call, |
| 204 | * no frames should go up or down through this interface. |
| 205 | * |
| 206 | * Arguments: |
| 207 | * netdev Linux network device structure |
| 208 | * |
| 209 | * Returns: |
| 210 | * zero on success, non-zero otherwise |
| 211 | ----------------------------------------------------------------*/ |
Mithlesh Thukral | 297f06c | 2009-06-10 19:36:11 +0530 | [diff] [blame] | 212 | static int p80211knetdev_stop(netdevice_t *netdev) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 213 | { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 214 | int result = 0; |
| 215 | wlandevice_t *wlandev = netdev->ml_priv; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 216 | |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 217 | if (wlandev->close != NULL) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 218 | result = wlandev->close(wlandev); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 219 | |
Solomon Peachy | cbec30c | 2008-10-29 10:42:57 -0400 | [diff] [blame] | 220 | netif_stop_queue(wlandev->netdev); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 221 | wlandev->state = WLAN_DEVICE_CLOSED; |
| 222 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 223 | return result; |
| 224 | } |
| 225 | |
| 226 | /*---------------------------------------------------------------- |
| 227 | * p80211netdev_rx |
| 228 | * |
| 229 | * Frame receive function called by the mac specific driver. |
| 230 | * |
| 231 | * Arguments: |
| 232 | * wlandev WLAN network device structure |
| 233 | * skb skbuff containing a full 802.11 frame. |
| 234 | * Returns: |
| 235 | * nothing |
| 236 | * Side effects: |
| 237 | * |
| 238 | ----------------------------------------------------------------*/ |
Mithlesh Thukral | 297f06c | 2009-06-10 19:36:11 +0530 | [diff] [blame] | 239 | void p80211netdev_rx(wlandevice_t *wlandev, struct sk_buff *skb) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 240 | { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 241 | /* Enqueue for post-irq processing */ |
| 242 | skb_queue_tail(&wlandev->nsd_rxq, skb); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 243 | tasklet_schedule(&wlandev->rx_bh); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 244 | } |
| 245 | |
| 246 | /*---------------------------------------------------------------- |
| 247 | * p80211netdev_rx_bh |
| 248 | * |
| 249 | * Deferred processing of all received frames. |
| 250 | * |
| 251 | * Arguments: |
| 252 | * wlandev WLAN network device structure |
| 253 | * skb skbuff containing a full 802.11 frame. |
| 254 | * Returns: |
| 255 | * nothing |
| 256 | * Side effects: |
| 257 | * |
| 258 | ----------------------------------------------------------------*/ |
| 259 | static void p80211netdev_rx_bh(unsigned long arg) |
| 260 | { |
| 261 | wlandevice_t *wlandev = (wlandevice_t *) arg; |
| 262 | struct sk_buff *skb = NULL; |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 263 | netdevice_t *dev = wlandev->netdev; |
Edgardo Hames | 93df38e | 2010-07-30 22:51:55 -0300 | [diff] [blame] | 264 | struct p80211_hdr_a3 *hdr; |
Solomon Peachy | aaad430 | 2008-10-29 10:42:53 -0400 | [diff] [blame] | 265 | u16 fc; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 266 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 267 | /* Let's empty our our queue */ |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 268 | while ((skb = skb_dequeue(&wlandev->nsd_rxq))) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 269 | if (wlandev->state == WLAN_DEVICE_OPEN) { |
| 270 | |
| 271 | if (dev->type != ARPHRD_ETHER) { |
| 272 | /* RAW frame; we shouldn't convert it */ |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 273 | /* XXX Append the Prism Header here instead. */ |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 274 | |
| 275 | /* set up various data fields */ |
| 276 | skb->dev = dev; |
| 277 | skb_reset_mac_header(skb); |
| 278 | skb->ip_summed = CHECKSUM_NONE; |
| 279 | skb->pkt_type = PACKET_OTHERHOST; |
| 280 | skb->protocol = htons(ETH_P_80211_RAW); |
| 281 | dev->last_rx = jiffies; |
| 282 | |
| 283 | wlandev->linux_stats.rx_packets++; |
| 284 | wlandev->linux_stats.rx_bytes += skb->len; |
| 285 | netif_rx_ni(skb); |
| 286 | continue; |
| 287 | } else { |
Edgardo Hames | 93df38e | 2010-07-30 22:51:55 -0300 | [diff] [blame] | 288 | hdr = (struct p80211_hdr_a3 *) skb->data; |
Moritz Muehlenhoff | ae26230 | 2009-01-21 22:00:45 +0100 | [diff] [blame] | 289 | fc = le16_to_cpu(hdr->fc); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 290 | if (p80211_rx_typedrop(wlandev, fc)) { |
| 291 | dev_kfree_skb(skb); |
| 292 | continue; |
| 293 | } |
| 294 | |
| 295 | /* perform mcast filtering */ |
| 296 | if (wlandev->netdev->flags & IFF_ALLMULTI) { |
| 297 | /* allow my local address through */ |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 298 | if (memcmp |
| 299 | (hdr->a1, wlandev->netdev->dev_addr, |
| 300 | ETH_ALEN) != 0) { |
Johan Meiring | 6f71090 | 2010-11-06 18:21:59 +0200 | [diff] [blame] | 301 | /* but reject anything else that |
| 302 | isn't multicast */ |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 303 | if (!(hdr->a1[0] & 0x01)) { |
| 304 | dev_kfree_skb(skb); |
| 305 | continue; |
| 306 | } |
| 307 | } |
| 308 | } |
| 309 | |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 310 | if (skb_p80211_to_ether |
| 311 | (wlandev, wlandev->ethconv, skb) == 0) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 312 | skb->dev->last_rx = jiffies; |
| 313 | wlandev->linux_stats.rx_packets++; |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 314 | wlandev->linux_stats.rx_bytes += |
| 315 | skb->len; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 316 | netif_rx_ni(skb); |
| 317 | continue; |
| 318 | } |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 319 | pr_debug("p80211_to_ether failed.\n"); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 320 | } |
| 321 | } |
| 322 | dev_kfree_skb(skb); |
| 323 | } |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 324 | } |
| 325 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 326 | /*---------------------------------------------------------------- |
| 327 | * p80211knetdev_hard_start_xmit |
| 328 | * |
| 329 | * Linux netdevice method for transmitting a frame. |
| 330 | * |
| 331 | * Arguments: |
| 332 | * skb Linux sk_buff containing the frame. |
| 333 | * netdev Linux netdevice. |
| 334 | * |
| 335 | * Side effects: |
| 336 | * If the lower layers report that buffers are full. netdev->tbusy |
| 337 | * will be set to prevent higher layers from sending more traffic. |
| 338 | * |
| 339 | * Note: If this function returns non-zero, higher layers retain |
| 340 | * ownership of the skb. |
| 341 | * |
| 342 | * Returns: |
| 343 | * zero on success, non-zero on failure. |
| 344 | ----------------------------------------------------------------*/ |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 345 | static int p80211knetdev_hard_start_xmit(struct sk_buff *skb, |
Mithlesh Thukral | 297f06c | 2009-06-10 19:36:11 +0530 | [diff] [blame] | 346 | netdevice_t *netdev) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 347 | { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 348 | int result = 0; |
| 349 | int txresult = -1; |
| 350 | wlandevice_t *wlandev = netdev->ml_priv; |
Edgardo Hames | 93df38e | 2010-07-30 22:51:55 -0300 | [diff] [blame] | 351 | union p80211_hdr p80211_hdr; |
Edgardo Hames | 51e4896 | 2010-07-31 13:06:52 -0300 | [diff] [blame] | 352 | struct p80211_metawep p80211_wep; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 353 | |
Peter Huewe | fae7e4d | 2013-02-14 03:37:10 +0100 | [diff] [blame] | 354 | p80211_wep.data = NULL; |
| 355 | |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 356 | if (skb == NULL) |
Patrick McHardy | ec634fe | 2009-07-05 19:23:38 -0700 | [diff] [blame] | 357 | return NETDEV_TX_OK; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 358 | |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 359 | if (wlandev->state != WLAN_DEVICE_OPEN) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 360 | result = 1; |
| 361 | goto failed; |
| 362 | } |
| 363 | |
Edgardo Hames | 93df38e | 2010-07-30 22:51:55 -0300 | [diff] [blame] | 364 | memset(&p80211_hdr, 0, sizeof(union p80211_hdr)); |
Edgardo Hames | 51e4896 | 2010-07-31 13:06:52 -0300 | [diff] [blame] | 365 | memset(&p80211_wep, 0, sizeof(struct p80211_metawep)); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 366 | |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 367 | if (netif_queue_stopped(netdev)) { |
Moritz Muehlenhoff | a7cf7ba | 2009-02-08 02:01:00 +0100 | [diff] [blame] | 368 | pr_debug("called when queue stopped.\n"); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 369 | result = 1; |
| 370 | goto failed; |
| 371 | } |
| 372 | |
| 373 | netif_stop_queue(netdev); |
| 374 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 375 | /* Check to see that a valid mode is set */ |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 376 | switch (wlandev->macmode) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 377 | case WLAN_MACMODE_IBSS_STA: |
| 378 | case WLAN_MACMODE_ESS_STA: |
| 379 | case WLAN_MACMODE_ESS_AP: |
| 380 | break; |
| 381 | default: |
| 382 | /* Mode isn't set yet, just drop the frame |
| 383 | * and return success . |
| 384 | * TODO: we need a saner way to handle this |
| 385 | */ |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 386 | if (skb->protocol != ETH_P_80211_RAW) { |
Solomon Peachy | cbec30c | 2008-10-29 10:42:57 -0400 | [diff] [blame] | 387 | netif_start_queue(wlandev->netdev); |
Moritz Muehlenhoff | 2acbf9d | 2009-01-25 21:54:59 +0100 | [diff] [blame] | 388 | printk(KERN_NOTICE |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 389 | "Tx attempt prior to association, frame dropped.\n"); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 390 | wlandev->linux_stats.tx_dropped++; |
| 391 | result = 0; |
| 392 | goto failed; |
| 393 | } |
| 394 | break; |
| 395 | } |
| 396 | |
| 397 | /* Check for raw transmits */ |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 398 | if (skb->protocol == ETH_P_80211_RAW) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 399 | if (!capable(CAP_NET_ADMIN)) { |
| 400 | result = 1; |
| 401 | goto failed; |
| 402 | } |
| 403 | /* move the header over */ |
Edgardo Hames | 93df38e | 2010-07-30 22:51:55 -0300 | [diff] [blame] | 404 | memcpy(&p80211_hdr, skb->data, sizeof(union p80211_hdr)); |
| 405 | skb_pull(skb, sizeof(union p80211_hdr)); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 406 | } else { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 407 | if (skb_ether_to_p80211 |
| 408 | (wlandev, wlandev->ethconv, skb, &p80211_hdr, |
| 409 | &p80211_wep) != 0) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 410 | /* convert failed */ |
Moritz Muehlenhoff | a7cf7ba | 2009-02-08 02:01:00 +0100 | [diff] [blame] | 411 | pr_debug("ether_to_80211(%d) failed.\n", |
Mithlesh Thukral | 75f49e0 | 2009-05-25 19:06:16 +0530 | [diff] [blame] | 412 | wlandev->ethconv); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 413 | result = 1; |
| 414 | goto failed; |
| 415 | } |
| 416 | } |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 417 | if (wlandev->txframe == NULL) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 418 | result = 1; |
| 419 | goto failed; |
| 420 | } |
| 421 | |
| 422 | netdev->trans_start = jiffies; |
| 423 | |
| 424 | wlandev->linux_stats.tx_packets++; |
| 425 | /* count only the packet payload */ |
| 426 | wlandev->linux_stats.tx_bytes += skb->len; |
| 427 | |
| 428 | txresult = wlandev->txframe(wlandev, skb, &p80211_hdr, &p80211_wep); |
| 429 | |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 430 | if (txresult == 0) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 431 | /* success and more buf */ |
| 432 | /* avail, re: hw_txdata */ |
Solomon Peachy | cbec30c | 2008-10-29 10:42:57 -0400 | [diff] [blame] | 433 | netif_wake_queue(wlandev->netdev); |
Patrick McHardy | 5b54814 | 2009-06-12 06:22:29 +0000 | [diff] [blame] | 434 | result = NETDEV_TX_OK; |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 435 | } else if (txresult == 1) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 436 | /* success, no more avail */ |
Moritz Muehlenhoff | a7cf7ba | 2009-02-08 02:01:00 +0100 | [diff] [blame] | 437 | pr_debug("txframe success, no more bufs\n"); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 438 | /* netdev->tbusy = 1; don't set here, irqhdlr */ |
| 439 | /* may have already cleared it */ |
Patrick McHardy | 5b54814 | 2009-06-12 06:22:29 +0000 | [diff] [blame] | 440 | result = NETDEV_TX_OK; |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 441 | } else if (txresult == 2) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 442 | /* alloc failure, drop frame */ |
Moritz Muehlenhoff | a7cf7ba | 2009-02-08 02:01:00 +0100 | [diff] [blame] | 443 | pr_debug("txframe returned alloc_fail\n"); |
Patrick McHardy | 5b54814 | 2009-06-12 06:22:29 +0000 | [diff] [blame] | 444 | result = NETDEV_TX_BUSY; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 445 | } else { |
| 446 | /* buffer full or queue busy, drop frame. */ |
Moritz Muehlenhoff | a7cf7ba | 2009-02-08 02:01:00 +0100 | [diff] [blame] | 447 | pr_debug("txframe returned full or busy\n"); |
Patrick McHardy | 5b54814 | 2009-06-12 06:22:29 +0000 | [diff] [blame] | 448 | result = NETDEV_TX_BUSY; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 449 | } |
| 450 | |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 451 | failed: |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 452 | /* Free up the WEP buffer if it's not the same as the skb */ |
| 453 | if ((p80211_wep.data) && (p80211_wep.data != skb->data)) |
Moritz Muehlenhoff | 2f58519 | 2009-06-21 22:43:45 +0200 | [diff] [blame] | 454 | kzfree(p80211_wep.data); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 455 | |
| 456 | /* we always free the skb here, never in a lower level. */ |
| 457 | if (!result) |
| 458 | dev_kfree_skb(skb); |
| 459 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 460 | return result; |
| 461 | } |
| 462 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 463 | /*---------------------------------------------------------------- |
| 464 | * p80211knetdev_set_multicast_list |
| 465 | * |
Justin P. Mattock | d34602d | 2012-09-24 09:16:57 -0700 | [diff] [blame] | 466 | * Called from higher layers whenever there's a need to set/clear |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 467 | * promiscuous mode or rewrite the multicast list. |
| 468 | * |
| 469 | * Arguments: |
| 470 | * none |
| 471 | * |
| 472 | * Returns: |
| 473 | * nothing |
| 474 | ----------------------------------------------------------------*/ |
Mithlesh Thukral | 297f06c | 2009-06-10 19:36:11 +0530 | [diff] [blame] | 475 | static void p80211knetdev_set_multicast_list(netdevice_t *dev) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 476 | { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 477 | wlandevice_t *wlandev = dev->ml_priv; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 478 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 479 | /* TODO: real multicast support as well */ |
| 480 | |
| 481 | if (wlandev->set_multicast_list) |
| 482 | wlandev->set_multicast_list(wlandev, dev); |
| 483 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 484 | } |
| 485 | |
| 486 | #ifdef SIOCETHTOOL |
| 487 | |
Mithlesh Thukral | 297f06c | 2009-06-10 19:36:11 +0530 | [diff] [blame] | 488 | static int p80211netdev_ethtool(wlandevice_t *wlandev, void __user *useraddr) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 489 | { |
Solomon Peachy | aaad430 | 2008-10-29 10:42:53 -0400 | [diff] [blame] | 490 | u32 ethcmd; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 491 | struct ethtool_drvinfo info; |
| 492 | struct ethtool_value edata; |
| 493 | |
| 494 | memset(&info, 0, sizeof(info)); |
| 495 | memset(&edata, 0, sizeof(edata)); |
| 496 | |
| 497 | if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) |
| 498 | return -EFAULT; |
| 499 | |
| 500 | switch (ethcmd) { |
| 501 | case ETHTOOL_GDRVINFO: |
| 502 | info.cmd = ethcmd; |
| 503 | snprintf(info.driver, sizeof(info.driver), "p80211_%s", |
| 504 | wlandev->nsdname); |
| 505 | snprintf(info.version, sizeof(info.version), "%s", |
| 506 | WLAN_RELEASE); |
| 507 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 508 | if (copy_to_user(useraddr, &info, sizeof(info))) |
| 509 | return -EFAULT; |
| 510 | return 0; |
| 511 | #ifdef ETHTOOL_GLINK |
| 512 | case ETHTOOL_GLINK: |
| 513 | edata.cmd = ethcmd; |
| 514 | |
| 515 | if (wlandev->linkstatus && |
| 516 | (wlandev->macmode != WLAN_MACMODE_NONE)) { |
| 517 | edata.data = 1; |
| 518 | } else { |
| 519 | edata.data = 0; |
| 520 | } |
| 521 | |
| 522 | if (copy_to_user(useraddr, &edata, sizeof(edata))) |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 523 | return -EFAULT; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 524 | return 0; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 525 | #endif |
Maximiliano David Bustos | c3444e5 | 2010-11-08 17:34:57 -0300 | [diff] [blame] | 526 | } |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 527 | |
| 528 | return -EOPNOTSUPP; |
| 529 | } |
| 530 | |
| 531 | #endif |
| 532 | |
| 533 | /*---------------------------------------------------------------- |
| 534 | * p80211knetdev_do_ioctl |
| 535 | * |
| 536 | * Handle an ioctl call on one of our devices. Everything Linux |
| 537 | * ioctl specific is done here. Then we pass the contents of the |
| 538 | * ifr->data to the request message handler. |
| 539 | * |
| 540 | * Arguments: |
| 541 | * dev Linux kernel netdevice |
| 542 | * ifr Our private ioctl request structure, typed for the |
| 543 | * generic struct ifreq so we can use ptr to func |
| 544 | * w/o cast. |
| 545 | * |
| 546 | * Returns: |
| 547 | * zero on success, a negative errno on failure. Possible values: |
| 548 | * -ENETDOWN Device isn't up. |
| 549 | * -EBUSY cmd already in progress |
| 550 | * -ETIME p80211 cmd timed out (MSD may have its own timers) |
| 551 | * -EFAULT memory fault copying msg from user buffer |
| 552 | * -ENOMEM unable to allocate kernel msg buffer |
| 553 | * -ENOSYS bad magic, it the cmd really for us? |
Solomon Peachy | aaad430 | 2008-10-29 10:42:53 -0400 | [diff] [blame] | 554 | * -EintR sleeping on cmd, awakened by signal, cmd cancelled. |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 555 | * |
| 556 | * Call Context: |
| 557 | * Process thread (ioctl caller). TODO: SMP support may require |
| 558 | * locks. |
| 559 | ----------------------------------------------------------------*/ |
Mithlesh Thukral | 297f06c | 2009-06-10 19:36:11 +0530 | [diff] [blame] | 560 | static int p80211knetdev_do_ioctl(netdevice_t *dev, struct ifreq *ifr, int cmd) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 561 | { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 562 | int result = 0; |
Edgardo Hames | e5bdbb9 | 2010-07-31 13:29:22 -0300 | [diff] [blame] | 563 | struct p80211ioctl_req *req = (struct p80211ioctl_req *) ifr; |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 564 | wlandevice_t *wlandev = dev->ml_priv; |
| 565 | u8 *msgbuf; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 566 | |
Moritz Muehlenhoff | a7cf7ba | 2009-02-08 02:01:00 +0100 | [diff] [blame] | 567 | pr_debug("rx'd ioctl, cmd=%d, len=%d\n", cmd, req->len); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 568 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 569 | #ifdef SIOCETHTOOL |
| 570 | if (cmd == SIOCETHTOOL) { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 571 | result = |
| 572 | p80211netdev_ethtool(wlandev, (void __user *)ifr->ifr_data); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 573 | goto bail; |
| 574 | } |
| 575 | #endif |
| 576 | |
| 577 | /* Test the magic, assume ifr is good if it's there */ |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 578 | if (req->magic != P80211_IOCTL_MAGIC) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 579 | result = -ENOSYS; |
| 580 | goto bail; |
| 581 | } |
| 582 | |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 583 | if (cmd == P80211_IFTEST) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 584 | result = 0; |
| 585 | goto bail; |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 586 | } else if (cmd != P80211_IFREQ) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 587 | result = -ENOSYS; |
| 588 | goto bail; |
| 589 | } |
| 590 | |
| 591 | /* Allocate a buf of size req->len */ |
Svenne Krap | 5dd8acc | 2010-02-14 18:59:00 +0100 | [diff] [blame] | 592 | msgbuf = kmalloc(req->len, GFP_KERNEL); |
| 593 | if (msgbuf) { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 594 | if (copy_from_user(msgbuf, (void __user *)req->data, req->len)) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 595 | result = -EFAULT; |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 596 | else |
| 597 | result = p80211req_dorequest(wlandev, msgbuf); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 598 | |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 599 | if (result == 0) { |
| 600 | if (copy_to_user |
| 601 | ((void __user *)req->data, msgbuf, req->len)) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 602 | result = -EFAULT; |
| 603 | } |
| 604 | } |
| 605 | kfree(msgbuf); |
| 606 | } else { |
| 607 | result = -ENOMEM; |
| 608 | } |
| 609 | bail: |
Edgardo Hames | b6bb56e | 2010-08-02 16:20:39 -0300 | [diff] [blame] | 610 | /* If allocate,copyfrom or copyto fails, return errno */ |
| 611 | return result; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 612 | } |
| 613 | |
| 614 | /*---------------------------------------------------------------- |
| 615 | * p80211knetdev_set_mac_address |
| 616 | * |
| 617 | * Handles the ioctl for changing the MACAddress of a netdevice |
| 618 | * |
| 619 | * references: linux/netdevice.h and drivers/net/net_init.c |
| 620 | * |
| 621 | * NOTE: [MSM] We only prevent address changes when the netdev is |
| 622 | * up. We don't control anything based on dot11 state. If the |
| 623 | * address is changed on a STA that's currently associated, you |
| 624 | * will probably lose the ability to send and receive data frames. |
| 625 | * Just be aware. Therefore, this should usually only be done |
| 626 | * prior to scan/join/auth/assoc. |
| 627 | * |
| 628 | * Arguments: |
| 629 | * dev netdevice struct |
| 630 | * addr the new MACAddress (a struct) |
| 631 | * |
| 632 | * Returns: |
| 633 | * zero on success, a negative errno on failure. Possible values: |
| 634 | * -EBUSY device is bussy (cmd not possible) |
| 635 | * -and errors returned by: p80211req_dorequest(..) |
| 636 | * |
| 637 | * by: Collin R. Mulliner <collin@mulliner.org> |
| 638 | ----------------------------------------------------------------*/ |
Mithlesh Thukral | 297f06c | 2009-06-10 19:36:11 +0530 | [diff] [blame] | 639 | static int p80211knetdev_set_mac_address(netdevice_t *dev, void *addr) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 640 | { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 641 | struct sockaddr *new_addr = addr; |
Edgardo Hames | b6bb56e | 2010-08-02 16:20:39 -0300 | [diff] [blame] | 642 | struct p80211msg_dot11req_mibset dot11req; |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 643 | p80211item_unk392_t *mibattr; |
| 644 | p80211item_pstr6_t *macaddr; |
| 645 | p80211item_uint32_t *resultcode; |
Devendra Naga | 909ff71 | 2012-09-09 18:41:02 +0530 | [diff] [blame] | 646 | int result; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 647 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 648 | /* If we're running, we don't allow MAC address changes */ |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 649 | if (netif_running(dev)) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 650 | return -EBUSY; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 651 | |
| 652 | /* Set up some convenience pointers. */ |
| 653 | mibattr = &dot11req.mibattribute; |
Svenne Krap | 5dd8acc | 2010-02-14 18:59:00 +0100 | [diff] [blame] | 654 | macaddr = (p80211item_pstr6_t *) &mibattr->data; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 655 | resultcode = &dot11req.resultcode; |
| 656 | |
| 657 | /* Set up a dot11req_mibset */ |
Edgardo Hames | b6bb56e | 2010-08-02 16:20:39 -0300 | [diff] [blame] | 658 | memset(&dot11req, 0, sizeof(struct p80211msg_dot11req_mibset)); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 659 | dot11req.msgcode = DIDmsg_dot11req_mibset; |
Edgardo Hames | b6bb56e | 2010-08-02 16:20:39 -0300 | [diff] [blame] | 660 | dot11req.msglen = sizeof(struct p80211msg_dot11req_mibset); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 661 | memcpy(dot11req.devname, |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 662 | ((wlandevice_t *) dev->ml_priv)->name, WLAN_DEVNAMELEN_MAX - 1); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 663 | |
| 664 | /* Set up the mibattribute argument */ |
| 665 | mibattr->did = DIDmsg_dot11req_mibset_mibattribute; |
| 666 | mibattr->status = P80211ENUM_msgitem_status_data_ok; |
| 667 | mibattr->len = sizeof(mibattr->data); |
| 668 | |
| 669 | macaddr->did = DIDmib_dot11mac_dot11OperationTable_dot11MACAddress; |
| 670 | macaddr->status = P80211ENUM_msgitem_status_data_ok; |
| 671 | macaddr->len = sizeof(macaddr->data); |
Moritz Muehlenhoff | 28b17a4 | 2009-01-21 22:00:41 +0100 | [diff] [blame] | 672 | macaddr->data.len = ETH_ALEN; |
| 673 | memcpy(&macaddr->data.data, new_addr->sa_data, ETH_ALEN); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 674 | |
| 675 | /* Set up the resultcode argument */ |
| 676 | resultcode->did = DIDmsg_dot11req_mibset_resultcode; |
| 677 | resultcode->status = P80211ENUM_msgitem_status_no_value; |
| 678 | resultcode->len = sizeof(resultcode->data); |
| 679 | resultcode->data = 0; |
| 680 | |
| 681 | /* now fire the request */ |
Svenne Krap | 5dd8acc | 2010-02-14 18:59:00 +0100 | [diff] [blame] | 682 | result = p80211req_dorequest(dev->ml_priv, (u8 *) &dot11req); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 683 | |
| 684 | /* If the request wasn't successful, report an error and don't |
| 685 | * change the netdev address |
| 686 | */ |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 687 | if (result != 0 || resultcode->data != P80211ENUM_resultcode_success) { |
Moritz Muehlenhoff | edbd606 | 2009-01-25 21:55:00 +0100 | [diff] [blame] | 688 | printk(KERN_ERR |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 689 | "Low-level driver failed dot11req_mibset(dot11MACAddress).\n"); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 690 | result = -EADDRNOTAVAIL; |
| 691 | } else { |
| 692 | /* everything's ok, change the addr in netdev */ |
| 693 | memcpy(dev->dev_addr, new_addr->sa_data, dev->addr_len); |
| 694 | } |
| 695 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 696 | return result; |
| 697 | } |
| 698 | |
Mithlesh Thukral | 297f06c | 2009-06-10 19:36:11 +0530 | [diff] [blame] | 699 | static int wlan_change_mtu(netdevice_t *dev, int new_mtu) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 700 | { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 701 | /* 2312 is max 802.11 payload, 20 is overhead, (ether + llc +snap) |
| 702 | and another 8 for wep. */ |
| 703 | if ((new_mtu < 68) || (new_mtu > (2312 - 20 - 8))) |
| 704 | return -EINVAL; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 705 | |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 706 | dev->mtu = new_mtu; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 707 | |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 708 | return 0; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 709 | } |
| 710 | |
Alexander Beregalov | cea9677 | 2009-03-29 19:31:28 +0400 | [diff] [blame] | 711 | static const struct net_device_ops p80211_netdev_ops = { |
Mithlesh Thukral | 75f49e0 | 2009-05-25 19:06:16 +0530 | [diff] [blame] | 712 | .ndo_init = p80211knetdev_init, |
| 713 | .ndo_open = p80211knetdev_open, |
| 714 | .ndo_stop = p80211knetdev_stop, |
| 715 | .ndo_get_stats = p80211knetdev_get_stats, |
| 716 | .ndo_start_xmit = p80211knetdev_hard_start_xmit, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 717 | .ndo_set_rx_mode = p80211knetdev_set_multicast_list, |
Mithlesh Thukral | 75f49e0 | 2009-05-25 19:06:16 +0530 | [diff] [blame] | 718 | .ndo_do_ioctl = p80211knetdev_do_ioctl, |
| 719 | .ndo_set_mac_address = p80211knetdev_set_mac_address, |
| 720 | .ndo_tx_timeout = p80211knetdev_tx_timeout, |
| 721 | .ndo_change_mtu = wlan_change_mtu, |
| 722 | .ndo_validate_addr = eth_validate_addr, |
Alexander Beregalov | cea9677 | 2009-03-29 19:31:28 +0400 | [diff] [blame] | 723 | }; |
| 724 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 725 | /*---------------------------------------------------------------- |
| 726 | * wlan_setup |
| 727 | * |
| 728 | * Roughly matches the functionality of ether_setup. Here |
| 729 | * we set up any members of the wlandevice structure that are common |
| 730 | * to all devices. Additionally, we allocate a linux 'struct device' |
| 731 | * and perform the same setup as ether_setup. |
| 732 | * |
| 733 | * Note: It's important that the caller have setup the wlandev->name |
| 734 | * ptr prior to calling this function. |
| 735 | * |
| 736 | * Arguments: |
| 737 | * wlandev ptr to the wlandev structure for the |
| 738 | * interface. |
Karl Relton | cb3126e | 2010-06-03 23:04:06 +0100 | [diff] [blame] | 739 | * physdev ptr to usb device |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 740 | * Returns: |
| 741 | * zero on success, non-zero otherwise. |
| 742 | * Call Context: |
| 743 | * Should be process thread. We'll assume it might be |
| 744 | * interrupt though. When we add support for statically |
| 745 | * compiled drivers, this function will be called in the |
| 746 | * context of the kernel startup code. |
| 747 | ----------------------------------------------------------------*/ |
Karl Relton | cb3126e | 2010-06-03 23:04:06 +0100 | [diff] [blame] | 748 | int wlan_setup(wlandevice_t *wlandev, struct device *physdev) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 749 | { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 750 | int result = 0; |
Karl Relton | cb3126e | 2010-06-03 23:04:06 +0100 | [diff] [blame] | 751 | netdevice_t *netdev; |
| 752 | struct wiphy *wiphy; |
| 753 | struct wireless_dev *wdev; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 754 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 755 | /* Set up the wlandev */ |
| 756 | wlandev->state = WLAN_DEVICE_CLOSED; |
| 757 | wlandev->ethconv = WLAN_ETHCONV_8021h; |
| 758 | wlandev->macmode = WLAN_MACMODE_NONE; |
| 759 | |
| 760 | /* Set up the rx queue */ |
| 761 | skb_queue_head_init(&wlandev->nsd_rxq); |
| 762 | tasklet_init(&wlandev->rx_bh, |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 763 | p80211netdev_rx_bh, (unsigned long)wlandev); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 764 | |
Karl Relton | cb3126e | 2010-06-03 23:04:06 +0100 | [diff] [blame] | 765 | /* Allocate and initialize the wiphy struct */ |
| 766 | wiphy = wlan_create_wiphy(physdev, wlandev); |
| 767 | if (wiphy == NULL) { |
| 768 | printk(KERN_ERR "Failed to alloc wiphy.\n"); |
| 769 | return 1; |
| 770 | } |
| 771 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 772 | /* Allocate and initialize the struct device */ |
Johan Meiring | 6f71090 | 2010-11-06 18:21:59 +0200 | [diff] [blame] | 773 | netdev = alloc_netdev(sizeof(struct wireless_dev), "wlan%d", |
| 774 | ether_setup); |
Karl Relton | cb3126e | 2010-06-03 23:04:06 +0100 | [diff] [blame] | 775 | if (netdev == NULL) { |
Moritz Muehlenhoff | edbd606 | 2009-01-25 21:55:00 +0100 | [diff] [blame] | 776 | printk(KERN_ERR "Failed to alloc netdev.\n"); |
Karl Relton | cb3126e | 2010-06-03 23:04:06 +0100 | [diff] [blame] | 777 | wlan_free_wiphy(wiphy); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 778 | result = 1; |
| 779 | } else { |
Karl Relton | cb3126e | 2010-06-03 23:04:06 +0100 | [diff] [blame] | 780 | wlandev->netdev = netdev; |
| 781 | netdev->ml_priv = wlandev; |
| 782 | netdev->netdev_ops = &p80211_netdev_ops; |
| 783 | wdev = netdev_priv(netdev); |
| 784 | wdev->wiphy = wiphy; |
| 785 | wdev->iftype = NL80211_IFTYPE_STATION; |
| 786 | netdev->ieee80211_ptr = wdev; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 787 | |
Karl Relton | cb3126e | 2010-06-03 23:04:06 +0100 | [diff] [blame] | 788 | netif_stop_queue(netdev); |
| 789 | netif_carrier_off(netdev); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 790 | } |
| 791 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 792 | return result; |
| 793 | } |
| 794 | |
| 795 | /*---------------------------------------------------------------- |
| 796 | * wlan_unsetup |
| 797 | * |
| 798 | * This function is paired with the wlan_setup routine. It should |
| 799 | * be called after unregister_wlandev. Basically, all it does is |
| 800 | * free the 'struct device' that's associated with the wlandev. |
| 801 | * We do it here because the 'struct device' isn't allocated |
| 802 | * explicitly in the driver code, it's done in wlan_setup. To |
| 803 | * do the free in the driver might seem like 'magic'. |
| 804 | * |
| 805 | * Arguments: |
| 806 | * wlandev ptr to the wlandev structure for the |
| 807 | * interface. |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 808 | * Call Context: |
| 809 | * Should be process thread. We'll assume it might be |
| 810 | * interrupt though. When we add support for statically |
| 811 | * compiled drivers, this function will be called in the |
| 812 | * context of the kernel startup code. |
| 813 | ----------------------------------------------------------------*/ |
Devendra Naga | 3f45932 | 2012-09-13 15:00:30 +0530 | [diff] [blame] | 814 | void wlan_unsetup(wlandevice_t *wlandev) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 815 | { |
Karl Relton | cb3126e | 2010-06-03 23:04:06 +0100 | [diff] [blame] | 816 | struct wireless_dev *wdev; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 817 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 818 | tasklet_kill(&wlandev->rx_bh); |
| 819 | |
Karl Relton | cb3126e | 2010-06-03 23:04:06 +0100 | [diff] [blame] | 820 | if (wlandev->netdev) { |
| 821 | wdev = netdev_priv(wlandev->netdev); |
Edgardo Hames | f34e3e7b | 2010-07-21 22:31:55 -0300 | [diff] [blame] | 822 | if (wdev->wiphy) |
| 823 | wlan_free_wiphy(wdev->wiphy); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 824 | free_netdev(wlandev->netdev); |
| 825 | wlandev->netdev = NULL; |
| 826 | } |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 827 | } |
| 828 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 829 | /*---------------------------------------------------------------- |
| 830 | * register_wlandev |
| 831 | * |
| 832 | * Roughly matches the functionality of register_netdev. This function |
| 833 | * is called after the driver has successfully probed and set up the |
| 834 | * resources for the device. It's now ready to become a named device |
| 835 | * in the Linux system. |
| 836 | * |
| 837 | * First we allocate a name for the device (if not already set), then |
| 838 | * we call the Linux function register_netdevice. |
| 839 | * |
| 840 | * Arguments: |
| 841 | * wlandev ptr to the wlandev structure for the |
| 842 | * interface. |
| 843 | * Returns: |
| 844 | * zero on success, non-zero otherwise. |
| 845 | * Call Context: |
| 846 | * Can be either interrupt or not. |
| 847 | ----------------------------------------------------------------*/ |
Mithlesh Thukral | 297f06c | 2009-06-10 19:36:11 +0530 | [diff] [blame] | 848 | int register_wlandev(wlandevice_t *wlandev) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 849 | { |
Devendra Naga | 50d6b9b | 2012-09-09 18:41:01 +0530 | [diff] [blame] | 850 | return register_netdev(wlandev->netdev); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 851 | } |
| 852 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 853 | /*---------------------------------------------------------------- |
| 854 | * unregister_wlandev |
| 855 | * |
| 856 | * Roughly matches the functionality of unregister_netdev. This |
| 857 | * function is called to remove a named device from the system. |
| 858 | * |
| 859 | * First we tell linux that the device should no longer exist. |
| 860 | * Then we remove it from the list of known wlan devices. |
| 861 | * |
| 862 | * Arguments: |
| 863 | * wlandev ptr to the wlandev structure for the |
| 864 | * interface. |
| 865 | * Returns: |
| 866 | * zero on success, non-zero otherwise. |
| 867 | * Call Context: |
| 868 | * Can be either interrupt or not. |
| 869 | ----------------------------------------------------------------*/ |
Mithlesh Thukral | 297f06c | 2009-06-10 19:36:11 +0530 | [diff] [blame] | 870 | int unregister_wlandev(wlandevice_t *wlandev) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 871 | { |
| 872 | struct sk_buff *skb; |
| 873 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 874 | unregister_netdev(wlandev->netdev); |
| 875 | |
| 876 | /* Now to clean out the rx queue */ |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 877 | while ((skb = skb_dequeue(&wlandev->nsd_rxq))) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 878 | dev_kfree_skb(skb); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 879 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 880 | return 0; |
| 881 | } |
| 882 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 883 | /*---------------------------------------------------------------- |
| 884 | * p80211netdev_hwremoved |
| 885 | * |
| 886 | * Hardware removed notification. This function should be called |
| 887 | * immediately after an MSD has detected that the underlying hardware |
| 888 | * has been yanked out from under us. The primary things we need |
| 889 | * to do are: |
| 890 | * - Mark the wlandev |
| 891 | * - Prevent any further traffic from the knetdev i/f |
| 892 | * - Prevent any further requests from mgmt i/f |
| 893 | * - If there are any waitq'd mgmt requests or mgmt-frame exchanges, |
| 894 | * shut them down. |
| 895 | * - Call the MSD hwremoved function. |
| 896 | * |
| 897 | * The remainder of the cleanup will be handled by unregister(). |
| 898 | * Our primary goal here is to prevent as much tickling of the MSD |
| 899 | * as possible since the MSD is already in a 'wounded' state. |
| 900 | * |
| 901 | * TODO: As new features are added, this function should be |
| 902 | * updated. |
| 903 | * |
| 904 | * Arguments: |
| 905 | * wlandev WLAN network device structure |
| 906 | * Returns: |
| 907 | * nothing |
| 908 | * Side effects: |
| 909 | * |
| 910 | * Call context: |
| 911 | * Usually interrupt. |
| 912 | ----------------------------------------------------------------*/ |
Mithlesh Thukral | 297f06c | 2009-06-10 19:36:11 +0530 | [diff] [blame] | 913 | void p80211netdev_hwremoved(wlandevice_t *wlandev) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 914 | { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 915 | wlandev->hwremoved = 1; |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 916 | if (wlandev->state == WLAN_DEVICE_OPEN) |
Solomon Peachy | cbec30c | 2008-10-29 10:42:57 -0400 | [diff] [blame] | 917 | netif_stop_queue(wlandev->netdev); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 918 | |
| 919 | netif_device_detach(wlandev->netdev); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 920 | } |
| 921 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 922 | /*---------------------------------------------------------------- |
| 923 | * p80211_rx_typedrop |
| 924 | * |
| 925 | * Classifies the frame, increments the appropriate counter, and |
| 926 | * returns 0|1|2 indicating whether the driver should handle, ignore, or |
| 927 | * drop the frame |
| 928 | * |
| 929 | * Arguments: |
| 930 | * wlandev wlan device structure |
| 931 | * fc frame control field |
| 932 | * |
| 933 | * Returns: |
| 934 | * zero if the frame should be handled by the driver, |
| 935 | * one if the frame should be ignored |
| 936 | * anything else means we drop it. |
| 937 | * |
| 938 | * Side effects: |
| 939 | * |
| 940 | * Call context: |
| 941 | * interrupt |
| 942 | ----------------------------------------------------------------*/ |
Mithlesh Thukral | 297f06c | 2009-06-10 19:36:11 +0530 | [diff] [blame] | 943 | static int p80211_rx_typedrop(wlandevice_t *wlandev, u16 fc) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 944 | { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 945 | u16 ftype; |
| 946 | u16 fstype; |
| 947 | int drop = 0; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 948 | /* Classify frame, increment counter */ |
| 949 | ftype = WLAN_GET_FC_FTYPE(fc); |
| 950 | fstype = WLAN_GET_FC_FSTYPE(fc); |
| 951 | #if 0 |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 952 | pr_debug("rx_typedrop : ftype=%d fstype=%d.\n", ftype, fstype); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 953 | #endif |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 954 | switch (ftype) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 955 | case WLAN_FTYPE_MGMT: |
| 956 | if ((wlandev->netdev->flags & IFF_PROMISC) || |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 957 | (wlandev->netdev->flags & IFF_ALLMULTI)) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 958 | drop = 1; |
| 959 | break; |
| 960 | } |
Moritz Muehlenhoff | a7cf7ba | 2009-02-08 02:01:00 +0100 | [diff] [blame] | 961 | pr_debug("rx'd mgmt:\n"); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 962 | wlandev->rx.mgmt++; |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 963 | switch (fstype) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 964 | case WLAN_FSTYPE_ASSOCREQ: |
| 965 | /* printk("assocreq"); */ |
| 966 | wlandev->rx.assocreq++; |
| 967 | break; |
| 968 | case WLAN_FSTYPE_ASSOCRESP: |
| 969 | /* printk("assocresp"); */ |
| 970 | wlandev->rx.assocresp++; |
| 971 | break; |
| 972 | case WLAN_FSTYPE_REASSOCREQ: |
| 973 | /* printk("reassocreq"); */ |
| 974 | wlandev->rx.reassocreq++; |
| 975 | break; |
| 976 | case WLAN_FSTYPE_REASSOCRESP: |
| 977 | /* printk("reassocresp"); */ |
| 978 | wlandev->rx.reassocresp++; |
| 979 | break; |
| 980 | case WLAN_FSTYPE_PROBEREQ: |
| 981 | /* printk("probereq"); */ |
| 982 | wlandev->rx.probereq++; |
| 983 | break; |
| 984 | case WLAN_FSTYPE_PROBERESP: |
| 985 | /* printk("proberesp"); */ |
| 986 | wlandev->rx.proberesp++; |
| 987 | break; |
| 988 | case WLAN_FSTYPE_BEACON: |
| 989 | /* printk("beacon"); */ |
| 990 | wlandev->rx.beacon++; |
| 991 | break; |
| 992 | case WLAN_FSTYPE_ATIM: |
| 993 | /* printk("atim"); */ |
| 994 | wlandev->rx.atim++; |
| 995 | break; |
| 996 | case WLAN_FSTYPE_DISASSOC: |
| 997 | /* printk("disassoc"); */ |
| 998 | wlandev->rx.disassoc++; |
| 999 | break; |
| 1000 | case WLAN_FSTYPE_AUTHEN: |
| 1001 | /* printk("authen"); */ |
| 1002 | wlandev->rx.authen++; |
| 1003 | break; |
| 1004 | case WLAN_FSTYPE_DEAUTHEN: |
| 1005 | /* printk("deauthen"); */ |
| 1006 | wlandev->rx.deauthen++; |
| 1007 | break; |
| 1008 | default: |
| 1009 | /* printk("unknown"); */ |
| 1010 | wlandev->rx.mgmt_unknown++; |
| 1011 | break; |
| 1012 | } |
| 1013 | /* printk("\n"); */ |
| 1014 | drop = 2; |
| 1015 | break; |
| 1016 | |
| 1017 | case WLAN_FTYPE_CTL: |
| 1018 | if ((wlandev->netdev->flags & IFF_PROMISC) || |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 1019 | (wlandev->netdev->flags & IFF_ALLMULTI)) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 1020 | drop = 1; |
| 1021 | break; |
| 1022 | } |
Moritz Muehlenhoff | a7cf7ba | 2009-02-08 02:01:00 +0100 | [diff] [blame] | 1023 | pr_debug("rx'd ctl:\n"); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 1024 | wlandev->rx.ctl++; |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 1025 | switch (fstype) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 1026 | case WLAN_FSTYPE_PSPOLL: |
| 1027 | /* printk("pspoll"); */ |
| 1028 | wlandev->rx.pspoll++; |
| 1029 | break; |
| 1030 | case WLAN_FSTYPE_RTS: |
| 1031 | /* printk("rts"); */ |
| 1032 | wlandev->rx.rts++; |
| 1033 | break; |
| 1034 | case WLAN_FSTYPE_CTS: |
| 1035 | /* printk("cts"); */ |
| 1036 | wlandev->rx.cts++; |
| 1037 | break; |
| 1038 | case WLAN_FSTYPE_ACK: |
| 1039 | /* printk("ack"); */ |
| 1040 | wlandev->rx.ack++; |
| 1041 | break; |
| 1042 | case WLAN_FSTYPE_CFEND: |
| 1043 | /* printk("cfend"); */ |
| 1044 | wlandev->rx.cfend++; |
| 1045 | break; |
| 1046 | case WLAN_FSTYPE_CFENDCFACK: |
| 1047 | /* printk("cfendcfack"); */ |
| 1048 | wlandev->rx.cfendcfack++; |
| 1049 | break; |
| 1050 | default: |
| 1051 | /* printk("unknown"); */ |
| 1052 | wlandev->rx.ctl_unknown++; |
| 1053 | break; |
| 1054 | } |
| 1055 | /* printk("\n"); */ |
| 1056 | drop = 2; |
| 1057 | break; |
| 1058 | |
| 1059 | case WLAN_FTYPE_DATA: |
| 1060 | wlandev->rx.data++; |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 1061 | switch (fstype) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 1062 | case WLAN_FSTYPE_DATAONLY: |
| 1063 | wlandev->rx.dataonly++; |
| 1064 | break; |
| 1065 | case WLAN_FSTYPE_DATA_CFACK: |
| 1066 | wlandev->rx.data_cfack++; |
| 1067 | break; |
| 1068 | case WLAN_FSTYPE_DATA_CFPOLL: |
| 1069 | wlandev->rx.data_cfpoll++; |
| 1070 | break; |
| 1071 | case WLAN_FSTYPE_DATA_CFACK_CFPOLL: |
| 1072 | wlandev->rx.data__cfack_cfpoll++; |
| 1073 | break; |
| 1074 | case WLAN_FSTYPE_NULL: |
Moritz Muehlenhoff | a7cf7ba | 2009-02-08 02:01:00 +0100 | [diff] [blame] | 1075 | pr_debug("rx'd data:null\n"); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 1076 | wlandev->rx.null++; |
| 1077 | break; |
| 1078 | case WLAN_FSTYPE_CFACK: |
Moritz Muehlenhoff | a7cf7ba | 2009-02-08 02:01:00 +0100 | [diff] [blame] | 1079 | pr_debug("rx'd data:cfack\n"); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 1080 | wlandev->rx.cfack++; |
| 1081 | break; |
| 1082 | case WLAN_FSTYPE_CFPOLL: |
Moritz Muehlenhoff | a7cf7ba | 2009-02-08 02:01:00 +0100 | [diff] [blame] | 1083 | pr_debug("rx'd data:cfpoll\n"); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 1084 | wlandev->rx.cfpoll++; |
| 1085 | break; |
| 1086 | case WLAN_FSTYPE_CFACK_CFPOLL: |
Moritz Muehlenhoff | a7cf7ba | 2009-02-08 02:01:00 +0100 | [diff] [blame] | 1087 | pr_debug("rx'd data:cfack_cfpoll\n"); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 1088 | wlandev->rx.cfack_cfpoll++; |
| 1089 | break; |
| 1090 | default: |
| 1091 | /* printk("unknown"); */ |
| 1092 | wlandev->rx.data_unknown++; |
| 1093 | break; |
| 1094 | } |
| 1095 | |
| 1096 | break; |
| 1097 | } |
| 1098 | return drop; |
| 1099 | } |
| 1100 | |
Mithlesh Thukral | 297f06c | 2009-06-10 19:36:11 +0530 | [diff] [blame] | 1101 | static void p80211knetdev_tx_timeout(netdevice_t *netdev) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 1102 | { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 1103 | wlandevice_t *wlandev = netdev->ml_priv; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 1104 | |
| 1105 | if (wlandev->tx_timeout) { |
| 1106 | wlandev->tx_timeout(wlandev); |
| 1107 | } else { |
Moritz Muehlenhoff | 9b9556e | 2009-01-25 21:55:01 +0100 | [diff] [blame] | 1108 | printk(KERN_WARNING "Implement tx_timeout for %s\n", |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 1109 | wlandev->nsdname); |
Solomon Peachy | cbec30c | 2008-10-29 10:42:57 -0400 | [diff] [blame] | 1110 | netif_wake_queue(wlandev->netdev); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 1111 | } |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 1112 | } |