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 | /* netdevice method functions */ |
Sergio Paracuellos | 1906698 | 2016-09-27 19:33:51 +0200 | [diff] [blame] | 94 | static int p80211knetdev_init(struct net_device *netdev); |
| 95 | static int p80211knetdev_open(struct net_device *netdev); |
| 96 | static int p80211knetdev_stop(struct net_device *netdev); |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 97 | static int p80211knetdev_hard_start_xmit(struct sk_buff *skb, |
Sergio Paracuellos | 1906698 | 2016-09-27 19:33:51 +0200 | [diff] [blame] | 98 | struct net_device *netdev); |
| 99 | static void p80211knetdev_set_multicast_list(struct net_device *dev); |
| 100 | static int p80211knetdev_do_ioctl(struct net_device *dev, struct ifreq *ifr, |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 101 | int cmd); |
Sergio Paracuellos | 1906698 | 2016-09-27 19:33:51 +0200 | [diff] [blame] | 102 | static int p80211knetdev_set_mac_address(struct net_device *dev, void *addr); |
| 103 | static void p80211knetdev_tx_timeout(struct net_device *netdev); |
sayli karnik | c9573a8 | 2016-09-18 15:11:14 +0530 | [diff] [blame] | 104 | static int p80211_rx_typedrop(struct wlandevice *wlandev, u16 fc); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 105 | |
Solomon Peachy | e02c69b | 2008-10-29 10:42:59 -0400 | [diff] [blame] | 106 | int wlan_watchdog = 5000; |
| 107 | module_param(wlan_watchdog, int, 0644); |
| 108 | MODULE_PARM_DESC(wlan_watchdog, "transmit timeout in milliseconds"); |
| 109 | |
| 110 | int wlan_wext_write = 1; |
| 111 | module_param(wlan_wext_write, int, 0644); |
| 112 | MODULE_PARM_DESC(wlan_wext_write, "enable write wireless extensions"); |
| 113 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 114 | /*---------------------------------------------------------------- |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 115 | * p80211knetdev_init |
| 116 | * |
| 117 | * Init method for a Linux netdevice. Called in response to |
| 118 | * register_netdev. |
| 119 | * |
| 120 | * Arguments: |
| 121 | * none |
| 122 | * |
| 123 | * Returns: |
| 124 | * nothing |
| 125 | ----------------------------------------------------------------*/ |
Sergio Paracuellos | 1906698 | 2016-09-27 19:33:51 +0200 | [diff] [blame] | 126 | static int p80211knetdev_init(struct net_device *netdev) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 127 | { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 128 | /* Called in response to register_netdev */ |
| 129 | /* This is usually the probe function, but the probe has */ |
| 130 | /* already been done by the MSD and the create_kdev */ |
| 131 | /* function. All we do here is return success */ |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 132 | return 0; |
| 133 | } |
| 134 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 135 | /*---------------------------------------------------------------- |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 136 | * p80211knetdev_open |
| 137 | * |
| 138 | * Linux netdevice open method. Following a successful call here, |
| 139 | * the device is supposed to be ready for tx and rx. In our |
| 140 | * situation that may not be entirely true due to the state of the |
| 141 | * MAC below. |
| 142 | * |
| 143 | * Arguments: |
| 144 | * netdev Linux network device structure |
| 145 | * |
| 146 | * Returns: |
| 147 | * zero on success, non-zero otherwise |
| 148 | ----------------------------------------------------------------*/ |
Sergio Paracuellos | 1906698 | 2016-09-27 19:33:51 +0200 | [diff] [blame] | 149 | static int p80211knetdev_open(struct net_device *netdev) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 150 | { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 151 | int result = 0; /* success */ |
sayli karnik | c9573a8 | 2016-09-18 15:11:14 +0530 | [diff] [blame] | 152 | struct wlandevice *wlandev = netdev->ml_priv; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 153 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 154 | /* Check to make sure the MSD is running */ |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 155 | if (wlandev->msdstate != WLAN_MSD_RUNNING) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 156 | return -ENODEV; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 157 | |
| 158 | /* Tell the MSD to open */ |
Sandhya Bankar | f3dbe30 | 2016-03-21 20:46:15 +0530 | [diff] [blame] | 159 | if (wlandev->open) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 160 | result = wlandev->open(wlandev); |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 161 | if (result == 0) { |
Solomon Peachy | cbec30c | 2008-10-29 10:42:57 -0400 | [diff] [blame] | 162 | netif_start_queue(wlandev->netdev); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 163 | wlandev->state = WLAN_DEVICE_OPEN; |
| 164 | } |
| 165 | } else { |
| 166 | result = -EAGAIN; |
| 167 | } |
| 168 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 169 | return result; |
| 170 | } |
| 171 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 172 | /*---------------------------------------------------------------- |
| 173 | * p80211knetdev_stop |
| 174 | * |
| 175 | * Linux netdevice stop (close) method. Following this call, |
| 176 | * no frames should go up or down through this interface. |
| 177 | * |
| 178 | * Arguments: |
| 179 | * netdev Linux network device structure |
| 180 | * |
| 181 | * Returns: |
| 182 | * zero on success, non-zero otherwise |
| 183 | ----------------------------------------------------------------*/ |
Sergio Paracuellos | 1906698 | 2016-09-27 19:33:51 +0200 | [diff] [blame] | 184 | static int p80211knetdev_stop(struct net_device *netdev) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 185 | { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 186 | int result = 0; |
sayli karnik | c9573a8 | 2016-09-18 15:11:14 +0530 | [diff] [blame] | 187 | struct wlandevice *wlandev = netdev->ml_priv; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 188 | |
Sandhya Bankar | f3dbe30 | 2016-03-21 20:46:15 +0530 | [diff] [blame] | 189 | if (wlandev->close) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 190 | result = wlandev->close(wlandev); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 191 | |
Solomon Peachy | cbec30c | 2008-10-29 10:42:57 -0400 | [diff] [blame] | 192 | netif_stop_queue(wlandev->netdev); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 193 | wlandev->state = WLAN_DEVICE_CLOSED; |
| 194 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 195 | return result; |
| 196 | } |
| 197 | |
| 198 | /*---------------------------------------------------------------- |
| 199 | * p80211netdev_rx |
| 200 | * |
| 201 | * Frame receive function called by the mac specific driver. |
| 202 | * |
| 203 | * Arguments: |
| 204 | * wlandev WLAN network device structure |
| 205 | * skb skbuff containing a full 802.11 frame. |
| 206 | * Returns: |
| 207 | * nothing |
| 208 | * Side effects: |
| 209 | * |
| 210 | ----------------------------------------------------------------*/ |
sayli karnik | c9573a8 | 2016-09-18 15:11:14 +0530 | [diff] [blame] | 211 | void p80211netdev_rx(struct wlandevice *wlandev, struct sk_buff *skb) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 212 | { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 213 | /* Enqueue for post-irq processing */ |
| 214 | skb_queue_tail(&wlandev->nsd_rxq, skb); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 215 | tasklet_schedule(&wlandev->rx_bh); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 216 | } |
| 217 | |
Denis Pithon | ccc3a59 | 2014-05-12 17:22:46 +0200 | [diff] [blame] | 218 | #define CONV_TO_ETHER_SKIPPED 0x01 |
| 219 | #define CONV_TO_ETHER_FAILED 0x02 |
| 220 | |
| 221 | /** |
Denis Pithon | ae4af9a | 2014-05-17 00:30:16 +0200 | [diff] [blame] | 222 | * p80211_convert_to_ether - conversion from 802.11 frame to ethernet frame |
Denis Pithon | ccc3a59 | 2014-05-12 17:22:46 +0200 | [diff] [blame] | 223 | * @wlandev: pointer to WLAN device |
| 224 | * @skb: pointer to socket buffer |
| 225 | * |
| 226 | * Returns: 0 if conversion succeeded |
| 227 | * CONV_TO_ETHER_FAILED if conversion failed |
| 228 | * CONV_TO_ETHER_SKIPPED if frame is ignored |
| 229 | */ |
sayli karnik | c9573a8 | 2016-09-18 15:11:14 +0530 | [diff] [blame] | 230 | static int p80211_convert_to_ether(struct wlandevice *wlandev, struct sk_buff *skb) |
Denis Pithon | ccc3a59 | 2014-05-12 17:22:46 +0200 | [diff] [blame] | 231 | { |
| 232 | struct p80211_hdr_a3 *hdr; |
| 233 | |
Jannik Becher | 0e21fa4 | 2016-09-23 01:02:10 +0200 | [diff] [blame] | 234 | hdr = (struct p80211_hdr_a3 *)skb->data; |
Denis Pithon | ccc3a59 | 2014-05-12 17:22:46 +0200 | [diff] [blame] | 235 | if (p80211_rx_typedrop(wlandev, hdr->fc)) |
| 236 | return CONV_TO_ETHER_SKIPPED; |
| 237 | |
Denis Pithon | 95c9668 | 2014-05-17 00:14:52 +0200 | [diff] [blame] | 238 | /* perform mcast filtering: allow my local address through but reject |
| 239 | * anything else that isn't multicast |
| 240 | */ |
Denis Pithon | ccc3a59 | 2014-05-12 17:22:46 +0200 | [diff] [blame] | 241 | if (wlandev->netdev->flags & IFF_ALLMULTI) { |
Denis Pithon | 9b3ac7a | 2014-05-17 00:14:50 +0200 | [diff] [blame] | 242 | if (!ether_addr_equal_unaligned(wlandev->netdev->dev_addr, |
| 243 | hdr->a1)) { |
Denis Pithon | 02b3b53 | 2014-05-17 00:14:51 +0200 | [diff] [blame] | 244 | if (!is_multicast_ether_addr(hdr->a1)) |
Denis Pithon | ccc3a59 | 2014-05-12 17:22:46 +0200 | [diff] [blame] | 245 | return CONV_TO_ETHER_SKIPPED; |
| 246 | } |
| 247 | } |
| 248 | |
| 249 | if (skb_p80211_to_ether(wlandev, wlandev->ethconv, skb) == 0) { |
| 250 | skb->dev->last_rx = jiffies; |
Tobias Klauser | 9630f6b | 2014-07-08 08:37:00 +0200 | [diff] [blame] | 251 | wlandev->netdev->stats.rx_packets++; |
| 252 | wlandev->netdev->stats.rx_bytes += skb->len; |
Denis Pithon | ccc3a59 | 2014-05-12 17:22:46 +0200 | [diff] [blame] | 253 | netif_rx_ni(skb); |
| 254 | return 0; |
| 255 | } |
| 256 | |
Denis Pithon | 79f9e63 | 2014-05-17 00:24:09 +0200 | [diff] [blame] | 257 | netdev_dbg(wlandev->netdev, "p80211_convert_to_ether failed.\n"); |
Denis Pithon | ccc3a59 | 2014-05-12 17:22:46 +0200 | [diff] [blame] | 258 | return CONV_TO_ETHER_FAILED; |
| 259 | } |
| 260 | |
Denis Pithon | 67c4ded | 2014-05-12 17:22:44 +0200 | [diff] [blame] | 261 | /** |
| 262 | * p80211netdev_rx_bh - deferred processing of all received frames |
| 263 | * |
| 264 | * @arg: pointer to WLAN network device structure (cast to unsigned long) |
| 265 | */ |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 266 | static void p80211netdev_rx_bh(unsigned long arg) |
| 267 | { |
Jannik Becher | 0e21fa4 | 2016-09-23 01:02:10 +0200 | [diff] [blame] | 268 | struct wlandevice *wlandev = (struct wlandevice *)arg; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 269 | struct sk_buff *skb = NULL; |
Sergio Paracuellos | 1906698 | 2016-09-27 19:33:51 +0200 | [diff] [blame] | 270 | struct net_device *dev = wlandev->netdev; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 271 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 272 | /* Let's empty our our queue */ |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 273 | while ((skb = skb_dequeue(&wlandev->nsd_rxq))) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 274 | if (wlandev->state == WLAN_DEVICE_OPEN) { |
| 275 | |
| 276 | if (dev->type != ARPHRD_ETHER) { |
| 277 | /* RAW frame; we shouldn't convert it */ |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 278 | /* XXX Append the Prism Header here instead. */ |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 279 | |
| 280 | /* set up various data fields */ |
| 281 | skb->dev = dev; |
| 282 | skb_reset_mac_header(skb); |
| 283 | skb->ip_summed = CHECKSUM_NONE; |
| 284 | skb->pkt_type = PACKET_OTHERHOST; |
| 285 | skb->protocol = htons(ETH_P_80211_RAW); |
| 286 | dev->last_rx = jiffies; |
| 287 | |
Tobias Klauser | 9630f6b | 2014-07-08 08:37:00 +0200 | [diff] [blame] | 288 | dev->stats.rx_packets++; |
| 289 | dev->stats.rx_bytes += skb->len; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 290 | netif_rx_ni(skb); |
| 291 | continue; |
| 292 | } else { |
Denis Pithon | ae4af9a | 2014-05-17 00:30:16 +0200 | [diff] [blame] | 293 | if (!p80211_convert_to_ether(wlandev, skb)) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 294 | continue; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 295 | } |
| 296 | } |
| 297 | dev_kfree_skb(skb); |
| 298 | } |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 299 | } |
| 300 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 301 | /*---------------------------------------------------------------- |
| 302 | * p80211knetdev_hard_start_xmit |
| 303 | * |
| 304 | * Linux netdevice method for transmitting a frame. |
| 305 | * |
| 306 | * Arguments: |
| 307 | * skb Linux sk_buff containing the frame. |
| 308 | * netdev Linux netdevice. |
| 309 | * |
| 310 | * Side effects: |
| 311 | * If the lower layers report that buffers are full. netdev->tbusy |
| 312 | * will be set to prevent higher layers from sending more traffic. |
| 313 | * |
| 314 | * Note: If this function returns non-zero, higher layers retain |
| 315 | * ownership of the skb. |
| 316 | * |
| 317 | * Returns: |
| 318 | * zero on success, non-zero on failure. |
| 319 | ----------------------------------------------------------------*/ |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 320 | static int p80211knetdev_hard_start_xmit(struct sk_buff *skb, |
Sergio Paracuellos | 1906698 | 2016-09-27 19:33:51 +0200 | [diff] [blame] | 321 | struct net_device *netdev) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 322 | { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 323 | int result = 0; |
| 324 | int txresult = -1; |
sayli karnik | c9573a8 | 2016-09-18 15:11:14 +0530 | [diff] [blame] | 325 | struct wlandevice *wlandev = netdev->ml_priv; |
Edgardo Hames | 93df38e | 2010-07-30 22:51:55 -0300 | [diff] [blame] | 326 | union p80211_hdr p80211_hdr; |
Edgardo Hames | 51e4896 | 2010-07-31 13:06:52 -0300 | [diff] [blame] | 327 | struct p80211_metawep p80211_wep; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 328 | |
Peter Huewe | fae7e4d | 2013-02-14 03:37:10 +0100 | [diff] [blame] | 329 | p80211_wep.data = NULL; |
| 330 | |
Fu Yong Quah | 1e61380 | 2016-02-20 10:23:14 +0000 | [diff] [blame] | 331 | if (!skb) |
Patrick McHardy | ec634fe | 2009-07-05 19:23:38 -0700 | [diff] [blame] | 332 | return NETDEV_TX_OK; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 333 | |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 334 | if (wlandev->state != WLAN_DEVICE_OPEN) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 335 | result = 1; |
| 336 | goto failed; |
| 337 | } |
| 338 | |
Edgardo Hames | 93df38e | 2010-07-30 22:51:55 -0300 | [diff] [blame] | 339 | memset(&p80211_hdr, 0, sizeof(union p80211_hdr)); |
Edgardo Hames | 51e4896 | 2010-07-31 13:06:52 -0300 | [diff] [blame] | 340 | memset(&p80211_wep, 0, sizeof(struct p80211_metawep)); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 341 | |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 342 | if (netif_queue_stopped(netdev)) { |
Denis Pithon | 79f9e63 | 2014-05-17 00:24:09 +0200 | [diff] [blame] | 343 | netdev_dbg(netdev, "called when queue stopped.\n"); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 344 | result = 1; |
| 345 | goto failed; |
| 346 | } |
| 347 | |
| 348 | netif_stop_queue(netdev); |
| 349 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 350 | /* Check to see that a valid mode is set */ |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 351 | switch (wlandev->macmode) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 352 | case WLAN_MACMODE_IBSS_STA: |
| 353 | case WLAN_MACMODE_ESS_STA: |
| 354 | case WLAN_MACMODE_ESS_AP: |
| 355 | break; |
| 356 | default: |
| 357 | /* Mode isn't set yet, just drop the frame |
| 358 | * and return success . |
| 359 | * TODO: we need a saner way to handle this |
| 360 | */ |
Ebru Akagunduz | cb6c1ee | 2014-10-21 02:47:29 +0300 | [diff] [blame] | 361 | if (be16_to_cpu(skb->protocol) != ETH_P_80211_RAW) { |
Solomon Peachy | cbec30c | 2008-10-29 10:42:57 -0400 | [diff] [blame] | 362 | netif_start_queue(wlandev->netdev); |
Denis Pithon | 79f9e63 | 2014-05-17 00:24:09 +0200 | [diff] [blame] | 363 | netdev_notice(netdev, "Tx attempt prior to association, frame dropped.\n"); |
Tobias Klauser | 9630f6b | 2014-07-08 08:37:00 +0200 | [diff] [blame] | 364 | netdev->stats.tx_dropped++; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 365 | result = 0; |
| 366 | goto failed; |
| 367 | } |
| 368 | break; |
| 369 | } |
| 370 | |
| 371 | /* Check for raw transmits */ |
Ebru Akagunduz | cb6c1ee | 2014-10-21 02:47:29 +0300 | [diff] [blame] | 372 | if (be16_to_cpu(skb->protocol) == ETH_P_80211_RAW) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 373 | if (!capable(CAP_NET_ADMIN)) { |
| 374 | result = 1; |
| 375 | goto failed; |
| 376 | } |
| 377 | /* move the header over */ |
Edgardo Hames | 93df38e | 2010-07-30 22:51:55 -0300 | [diff] [blame] | 378 | memcpy(&p80211_hdr, skb->data, sizeof(union p80211_hdr)); |
| 379 | skb_pull(skb, sizeof(union p80211_hdr)); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 380 | } else { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 381 | if (skb_ether_to_p80211 |
| 382 | (wlandev, wlandev->ethconv, skb, &p80211_hdr, |
| 383 | &p80211_wep) != 0) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 384 | /* convert failed */ |
Denis Pithon | 79f9e63 | 2014-05-17 00:24:09 +0200 | [diff] [blame] | 385 | netdev_dbg(netdev, "ether_to_80211(%d) failed.\n", |
| 386 | wlandev->ethconv); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 387 | result = 1; |
| 388 | goto failed; |
| 389 | } |
| 390 | } |
Fu Yong Quah | 1e61380 | 2016-02-20 10:23:14 +0000 | [diff] [blame] | 391 | if (!wlandev->txframe) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 392 | result = 1; |
| 393 | goto failed; |
| 394 | } |
| 395 | |
Florian Westphal | 860e953 | 2016-05-03 16:33:13 +0200 | [diff] [blame] | 396 | netif_trans_update(netdev); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 397 | |
Tobias Klauser | 9630f6b | 2014-07-08 08:37:00 +0200 | [diff] [blame] | 398 | netdev->stats.tx_packets++; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 399 | /* count only the packet payload */ |
Tobias Klauser | 9630f6b | 2014-07-08 08:37:00 +0200 | [diff] [blame] | 400 | netdev->stats.tx_bytes += skb->len; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 401 | |
| 402 | txresult = wlandev->txframe(wlandev, skb, &p80211_hdr, &p80211_wep); |
| 403 | |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 404 | if (txresult == 0) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 405 | /* success and more buf */ |
| 406 | /* avail, re: hw_txdata */ |
Solomon Peachy | cbec30c | 2008-10-29 10:42:57 -0400 | [diff] [blame] | 407 | netif_wake_queue(wlandev->netdev); |
Patrick McHardy | 5b54814 | 2009-06-12 06:22:29 +0000 | [diff] [blame] | 408 | result = NETDEV_TX_OK; |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 409 | } else if (txresult == 1) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 410 | /* success, no more avail */ |
Denis Pithon | 79f9e63 | 2014-05-17 00:24:09 +0200 | [diff] [blame] | 411 | netdev_dbg(netdev, "txframe success, no more bufs\n"); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 412 | /* netdev->tbusy = 1; don't set here, irqhdlr */ |
| 413 | /* may have already cleared it */ |
Patrick McHardy | 5b54814 | 2009-06-12 06:22:29 +0000 | [diff] [blame] | 414 | result = NETDEV_TX_OK; |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 415 | } else if (txresult == 2) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 416 | /* alloc failure, drop frame */ |
Denis Pithon | 79f9e63 | 2014-05-17 00:24:09 +0200 | [diff] [blame] | 417 | netdev_dbg(netdev, "txframe returned alloc_fail\n"); |
Patrick McHardy | 5b54814 | 2009-06-12 06:22:29 +0000 | [diff] [blame] | 418 | result = NETDEV_TX_BUSY; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 419 | } else { |
| 420 | /* buffer full or queue busy, drop frame. */ |
Denis Pithon | 79f9e63 | 2014-05-17 00:24:09 +0200 | [diff] [blame] | 421 | netdev_dbg(netdev, "txframe returned full or busy\n"); |
Patrick McHardy | 5b54814 | 2009-06-12 06:22:29 +0000 | [diff] [blame] | 422 | result = NETDEV_TX_BUSY; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 423 | } |
| 424 | |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 425 | failed: |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 426 | /* Free up the WEP buffer if it's not the same as the skb */ |
| 427 | if ((p80211_wep.data) && (p80211_wep.data != skb->data)) |
Moritz Muehlenhoff | 2f58519 | 2009-06-21 22:43:45 +0200 | [diff] [blame] | 428 | kzfree(p80211_wep.data); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 429 | |
| 430 | /* we always free the skb here, never in a lower level. */ |
| 431 | if (!result) |
| 432 | dev_kfree_skb(skb); |
| 433 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 434 | return result; |
| 435 | } |
| 436 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 437 | /*---------------------------------------------------------------- |
| 438 | * p80211knetdev_set_multicast_list |
| 439 | * |
Justin P. Mattock | d34602d | 2012-09-24 09:16:57 -0700 | [diff] [blame] | 440 | * 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] | 441 | * promiscuous mode or rewrite the multicast list. |
| 442 | * |
| 443 | * Arguments: |
| 444 | * none |
| 445 | * |
| 446 | * Returns: |
| 447 | * nothing |
| 448 | ----------------------------------------------------------------*/ |
Sergio Paracuellos | 1906698 | 2016-09-27 19:33:51 +0200 | [diff] [blame] | 449 | static void p80211knetdev_set_multicast_list(struct net_device *dev) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 450 | { |
sayli karnik | c9573a8 | 2016-09-18 15:11:14 +0530 | [diff] [blame] | 451 | struct wlandevice *wlandev = dev->ml_priv; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 452 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 453 | /* TODO: real multicast support as well */ |
| 454 | |
| 455 | if (wlandev->set_multicast_list) |
| 456 | wlandev->set_multicast_list(wlandev, dev); |
| 457 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 458 | } |
| 459 | |
| 460 | #ifdef SIOCETHTOOL |
| 461 | |
sayli karnik | c9573a8 | 2016-09-18 15:11:14 +0530 | [diff] [blame] | 462 | static int p80211netdev_ethtool(struct wlandevice *wlandev, void __user *useraddr) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 463 | { |
Solomon Peachy | aaad430 | 2008-10-29 10:42:53 -0400 | [diff] [blame] | 464 | u32 ethcmd; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 465 | struct ethtool_drvinfo info; |
| 466 | struct ethtool_value edata; |
| 467 | |
| 468 | memset(&info, 0, sizeof(info)); |
| 469 | memset(&edata, 0, sizeof(edata)); |
| 470 | |
| 471 | if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) |
| 472 | return -EFAULT; |
| 473 | |
| 474 | switch (ethcmd) { |
| 475 | case ETHTOOL_GDRVINFO: |
| 476 | info.cmd = ethcmd; |
| 477 | snprintf(info.driver, sizeof(info.driver), "p80211_%s", |
| 478 | wlandev->nsdname); |
| 479 | snprintf(info.version, sizeof(info.version), "%s", |
| 480 | WLAN_RELEASE); |
| 481 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 482 | if (copy_to_user(useraddr, &info, sizeof(info))) |
| 483 | return -EFAULT; |
| 484 | return 0; |
| 485 | #ifdef ETHTOOL_GLINK |
| 486 | case ETHTOOL_GLINK: |
| 487 | edata.cmd = ethcmd; |
| 488 | |
| 489 | if (wlandev->linkstatus && |
| 490 | (wlandev->macmode != WLAN_MACMODE_NONE)) { |
| 491 | edata.data = 1; |
| 492 | } else { |
| 493 | edata.data = 0; |
| 494 | } |
| 495 | |
| 496 | if (copy_to_user(useraddr, &edata, sizeof(edata))) |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 497 | return -EFAULT; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 498 | return 0; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 499 | #endif |
Maximiliano David Bustos | c3444e5 | 2010-11-08 17:34:57 -0300 | [diff] [blame] | 500 | } |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 501 | |
| 502 | return -EOPNOTSUPP; |
| 503 | } |
| 504 | |
| 505 | #endif |
| 506 | |
| 507 | /*---------------------------------------------------------------- |
| 508 | * p80211knetdev_do_ioctl |
| 509 | * |
| 510 | * Handle an ioctl call on one of our devices. Everything Linux |
| 511 | * ioctl specific is done here. Then we pass the contents of the |
| 512 | * ifr->data to the request message handler. |
| 513 | * |
| 514 | * Arguments: |
| 515 | * dev Linux kernel netdevice |
| 516 | * ifr Our private ioctl request structure, typed for the |
| 517 | * generic struct ifreq so we can use ptr to func |
| 518 | * w/o cast. |
| 519 | * |
| 520 | * Returns: |
| 521 | * zero on success, a negative errno on failure. Possible values: |
| 522 | * -ENETDOWN Device isn't up. |
| 523 | * -EBUSY cmd already in progress |
| 524 | * -ETIME p80211 cmd timed out (MSD may have its own timers) |
| 525 | * -EFAULT memory fault copying msg from user buffer |
| 526 | * -ENOMEM unable to allocate kernel msg buffer |
| 527 | * -ENOSYS bad magic, it the cmd really for us? |
Solomon Peachy | aaad430 | 2008-10-29 10:42:53 -0400 | [diff] [blame] | 528 | * -EintR sleeping on cmd, awakened by signal, cmd cancelled. |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 529 | * |
| 530 | * Call Context: |
| 531 | * Process thread (ioctl caller). TODO: SMP support may require |
| 532 | * locks. |
| 533 | ----------------------------------------------------------------*/ |
Sergio Paracuellos | 1906698 | 2016-09-27 19:33:51 +0200 | [diff] [blame] | 534 | static int p80211knetdev_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 535 | { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 536 | int result = 0; |
Jannik Becher | 0e21fa4 | 2016-09-23 01:02:10 +0200 | [diff] [blame] | 537 | struct p80211ioctl_req *req = (struct p80211ioctl_req *)ifr; |
sayli karnik | c9573a8 | 2016-09-18 15:11:14 +0530 | [diff] [blame] | 538 | struct wlandevice *wlandev = dev->ml_priv; |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 539 | u8 *msgbuf; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 540 | |
Denis Pithon | 79f9e63 | 2014-05-17 00:24:09 +0200 | [diff] [blame] | 541 | netdev_dbg(dev, "rx'd ioctl, cmd=%d, len=%d\n", cmd, req->len); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 542 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 543 | #ifdef SIOCETHTOOL |
| 544 | if (cmd == SIOCETHTOOL) { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 545 | result = |
| 546 | p80211netdev_ethtool(wlandev, (void __user *)ifr->ifr_data); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 547 | goto bail; |
| 548 | } |
| 549 | #endif |
| 550 | |
| 551 | /* Test the magic, assume ifr is good if it's there */ |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 552 | if (req->magic != P80211_IOCTL_MAGIC) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 553 | result = -ENOSYS; |
| 554 | goto bail; |
| 555 | } |
| 556 | |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 557 | if (cmd == P80211_IFTEST) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 558 | result = 0; |
| 559 | goto bail; |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 560 | } else if (cmd != P80211_IFREQ) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 561 | result = -ENOSYS; |
| 562 | goto bail; |
| 563 | } |
| 564 | |
| 565 | /* Allocate a buf of size req->len */ |
Svenne Krap | 5dd8acc | 2010-02-14 18:59:00 +0100 | [diff] [blame] | 566 | msgbuf = kmalloc(req->len, GFP_KERNEL); |
| 567 | if (msgbuf) { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 568 | if (copy_from_user(msgbuf, (void __user *)req->data, req->len)) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 569 | result = -EFAULT; |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 570 | else |
| 571 | result = p80211req_dorequest(wlandev, msgbuf); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 572 | |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 573 | if (result == 0) { |
| 574 | if (copy_to_user |
| 575 | ((void __user *)req->data, msgbuf, req->len)) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 576 | result = -EFAULT; |
| 577 | } |
| 578 | } |
| 579 | kfree(msgbuf); |
| 580 | } else { |
| 581 | result = -ENOMEM; |
| 582 | } |
| 583 | bail: |
Edgardo Hames | b6bb56e | 2010-08-02 16:20:39 -0300 | [diff] [blame] | 584 | /* If allocate,copyfrom or copyto fails, return errno */ |
| 585 | return result; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 586 | } |
| 587 | |
| 588 | /*---------------------------------------------------------------- |
| 589 | * p80211knetdev_set_mac_address |
| 590 | * |
| 591 | * Handles the ioctl for changing the MACAddress of a netdevice |
| 592 | * |
| 593 | * references: linux/netdevice.h and drivers/net/net_init.c |
| 594 | * |
| 595 | * NOTE: [MSM] We only prevent address changes when the netdev is |
| 596 | * up. We don't control anything based on dot11 state. If the |
| 597 | * address is changed on a STA that's currently associated, you |
| 598 | * will probably lose the ability to send and receive data frames. |
| 599 | * Just be aware. Therefore, this should usually only be done |
| 600 | * prior to scan/join/auth/assoc. |
| 601 | * |
| 602 | * Arguments: |
| 603 | * dev netdevice struct |
| 604 | * addr the new MACAddress (a struct) |
| 605 | * |
| 606 | * Returns: |
| 607 | * zero on success, a negative errno on failure. Possible values: |
| 608 | * -EBUSY device is bussy (cmd not possible) |
| 609 | * -and errors returned by: p80211req_dorequest(..) |
| 610 | * |
| 611 | * by: Collin R. Mulliner <collin@mulliner.org> |
| 612 | ----------------------------------------------------------------*/ |
Sergio Paracuellos | 1906698 | 2016-09-27 19:33:51 +0200 | [diff] [blame] | 613 | static int p80211knetdev_set_mac_address(struct net_device *dev, void *addr) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 614 | { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 615 | struct sockaddr *new_addr = addr; |
Edgardo Hames | b6bb56e | 2010-08-02 16:20:39 -0300 | [diff] [blame] | 616 | struct p80211msg_dot11req_mibset dot11req; |
Sergio Paracuellos | 37e4866 | 2016-09-25 15:35:05 +0200 | [diff] [blame] | 617 | struct p80211item_unk392 *mibattr; |
Sergio Paracuellos | 34aae05 | 2016-09-25 15:35:01 +0200 | [diff] [blame] | 618 | struct p80211item_pstr6 *macaddr; |
Sergio Paracuellos | b26b232 | 2016-09-25 15:35:00 +0200 | [diff] [blame] | 619 | struct p80211item_uint32 *resultcode; |
Devendra Naga | 909ff71 | 2012-09-09 18:41:02 +0530 | [diff] [blame] | 620 | int result; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 621 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 622 | /* If we're running, we don't allow MAC address changes */ |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 623 | if (netif_running(dev)) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 624 | return -EBUSY; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 625 | |
| 626 | /* Set up some convenience pointers. */ |
| 627 | mibattr = &dot11req.mibattribute; |
Sergio Paracuellos | 34aae05 | 2016-09-25 15:35:01 +0200 | [diff] [blame] | 628 | macaddr = (struct p80211item_pstr6 *)&mibattr->data; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 629 | resultcode = &dot11req.resultcode; |
| 630 | |
| 631 | /* Set up a dot11req_mibset */ |
Edgardo Hames | b6bb56e | 2010-08-02 16:20:39 -0300 | [diff] [blame] | 632 | memset(&dot11req, 0, sizeof(struct p80211msg_dot11req_mibset)); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 633 | dot11req.msgcode = DIDmsg_dot11req_mibset; |
Edgardo Hames | b6bb56e | 2010-08-02 16:20:39 -0300 | [diff] [blame] | 634 | dot11req.msglen = sizeof(struct p80211msg_dot11req_mibset); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 635 | memcpy(dot11req.devname, |
Jannik Becher | 0e21fa4 | 2016-09-23 01:02:10 +0200 | [diff] [blame] | 636 | ((struct wlandevice *)dev->ml_priv)->name, WLAN_DEVNAMELEN_MAX - 1); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 637 | |
| 638 | /* Set up the mibattribute argument */ |
| 639 | mibattr->did = DIDmsg_dot11req_mibset_mibattribute; |
| 640 | mibattr->status = P80211ENUM_msgitem_status_data_ok; |
| 641 | mibattr->len = sizeof(mibattr->data); |
| 642 | |
| 643 | macaddr->did = DIDmib_dot11mac_dot11OperationTable_dot11MACAddress; |
| 644 | macaddr->status = P80211ENUM_msgitem_status_data_ok; |
| 645 | macaddr->len = sizeof(macaddr->data); |
Moritz Muehlenhoff | 28b17a4 | 2009-01-21 22:00:41 +0100 | [diff] [blame] | 646 | macaddr->data.len = ETH_ALEN; |
| 647 | memcpy(&macaddr->data.data, new_addr->sa_data, ETH_ALEN); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 648 | |
| 649 | /* Set up the resultcode argument */ |
| 650 | resultcode->did = DIDmsg_dot11req_mibset_resultcode; |
| 651 | resultcode->status = P80211ENUM_msgitem_status_no_value; |
| 652 | resultcode->len = sizeof(resultcode->data); |
| 653 | resultcode->data = 0; |
| 654 | |
| 655 | /* now fire the request */ |
Jannik Becher | 0e21fa4 | 2016-09-23 01:02:10 +0200 | [diff] [blame] | 656 | result = p80211req_dorequest(dev->ml_priv, (u8 *)&dot11req); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 657 | |
| 658 | /* If the request wasn't successful, report an error and don't |
| 659 | * change the netdev address |
| 660 | */ |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 661 | if (result != 0 || resultcode->data != P80211ENUM_resultcode_success) { |
Denis Pithon | 79f9e63 | 2014-05-17 00:24:09 +0200 | [diff] [blame] | 662 | netdev_err(dev, "Low-level driver failed dot11req_mibset(dot11MACAddress).\n"); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 663 | result = -EADDRNOTAVAIL; |
| 664 | } else { |
| 665 | /* everything's ok, change the addr in netdev */ |
| 666 | memcpy(dev->dev_addr, new_addr->sa_data, dev->addr_len); |
| 667 | } |
| 668 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 669 | return result; |
| 670 | } |
| 671 | |
Sergio Paracuellos | 1906698 | 2016-09-27 19:33:51 +0200 | [diff] [blame] | 672 | static int wlan_change_mtu(struct net_device *dev, int new_mtu) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 673 | { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 674 | /* 2312 is max 802.11 payload, 20 is overhead, (ether + llc +snap) |
| 675 | and another 8 for wep. */ |
| 676 | if ((new_mtu < 68) || (new_mtu > (2312 - 20 - 8))) |
| 677 | return -EINVAL; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 678 | |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 679 | dev->mtu = new_mtu; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 680 | |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 681 | return 0; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 682 | } |
| 683 | |
Alexander Beregalov | cea9677 | 2009-03-29 19:31:28 +0400 | [diff] [blame] | 684 | static const struct net_device_ops p80211_netdev_ops = { |
Mithlesh Thukral | 75f49e0 | 2009-05-25 19:06:16 +0530 | [diff] [blame] | 685 | .ndo_init = p80211knetdev_init, |
| 686 | .ndo_open = p80211knetdev_open, |
| 687 | .ndo_stop = p80211knetdev_stop, |
Mithlesh Thukral | 75f49e0 | 2009-05-25 19:06:16 +0530 | [diff] [blame] | 688 | .ndo_start_xmit = p80211knetdev_hard_start_xmit, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 689 | .ndo_set_rx_mode = p80211knetdev_set_multicast_list, |
Mithlesh Thukral | 75f49e0 | 2009-05-25 19:06:16 +0530 | [diff] [blame] | 690 | .ndo_do_ioctl = p80211knetdev_do_ioctl, |
| 691 | .ndo_set_mac_address = p80211knetdev_set_mac_address, |
| 692 | .ndo_tx_timeout = p80211knetdev_tx_timeout, |
| 693 | .ndo_change_mtu = wlan_change_mtu, |
| 694 | .ndo_validate_addr = eth_validate_addr, |
Alexander Beregalov | cea9677 | 2009-03-29 19:31:28 +0400 | [diff] [blame] | 695 | }; |
| 696 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 697 | /*---------------------------------------------------------------- |
| 698 | * wlan_setup |
| 699 | * |
| 700 | * Roughly matches the functionality of ether_setup. Here |
| 701 | * we set up any members of the wlandevice structure that are common |
| 702 | * to all devices. Additionally, we allocate a linux 'struct device' |
| 703 | * and perform the same setup as ether_setup. |
| 704 | * |
| 705 | * Note: It's important that the caller have setup the wlandev->name |
| 706 | * ptr prior to calling this function. |
| 707 | * |
| 708 | * Arguments: |
| 709 | * wlandev ptr to the wlandev structure for the |
| 710 | * interface. |
Karl Relton | cb3126e | 2010-06-03 23:04:06 +0100 | [diff] [blame] | 711 | * physdev ptr to usb device |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 712 | * Returns: |
| 713 | * zero on success, non-zero otherwise. |
| 714 | * Call Context: |
| 715 | * Should be process thread. We'll assume it might be |
| 716 | * interrupt though. When we add support for statically |
| 717 | * compiled drivers, this function will be called in the |
| 718 | * context of the kernel startup code. |
| 719 | ----------------------------------------------------------------*/ |
sayli karnik | c9573a8 | 2016-09-18 15:11:14 +0530 | [diff] [blame] | 720 | int wlan_setup(struct wlandevice *wlandev, struct device *physdev) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 721 | { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 722 | int result = 0; |
Sergio Paracuellos | 1906698 | 2016-09-27 19:33:51 +0200 | [diff] [blame] | 723 | struct net_device *netdev; |
Karl Relton | cb3126e | 2010-06-03 23:04:06 +0100 | [diff] [blame] | 724 | struct wiphy *wiphy; |
| 725 | struct wireless_dev *wdev; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 726 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 727 | /* Set up the wlandev */ |
| 728 | wlandev->state = WLAN_DEVICE_CLOSED; |
| 729 | wlandev->ethconv = WLAN_ETHCONV_8021h; |
| 730 | wlandev->macmode = WLAN_MACMODE_NONE; |
| 731 | |
| 732 | /* Set up the rx queue */ |
| 733 | skb_queue_head_init(&wlandev->nsd_rxq); |
| 734 | tasklet_init(&wlandev->rx_bh, |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 735 | p80211netdev_rx_bh, (unsigned long)wlandev); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 736 | |
Karl Relton | cb3126e | 2010-06-03 23:04:06 +0100 | [diff] [blame] | 737 | /* Allocate and initialize the wiphy struct */ |
| 738 | wiphy = wlan_create_wiphy(physdev, wlandev); |
Fu Yong Quah | 1e61380 | 2016-02-20 10:23:14 +0000 | [diff] [blame] | 739 | if (!wiphy) { |
Denis Pithon | 79f9e63 | 2014-05-17 00:24:09 +0200 | [diff] [blame] | 740 | dev_err(physdev, "Failed to alloc wiphy.\n"); |
Karl Relton | cb3126e | 2010-06-03 23:04:06 +0100 | [diff] [blame] | 741 | return 1; |
| 742 | } |
| 743 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 744 | /* Allocate and initialize the struct device */ |
Johan Meiring | 6f71090 | 2010-11-06 18:21:59 +0200 | [diff] [blame] | 745 | netdev = alloc_netdev(sizeof(struct wireless_dev), "wlan%d", |
Tom Gundersen | c835a67 | 2014-07-14 16:37:24 +0200 | [diff] [blame] | 746 | NET_NAME_UNKNOWN, ether_setup); |
Fu Yong Quah | 1e61380 | 2016-02-20 10:23:14 +0000 | [diff] [blame] | 747 | if (!netdev) { |
Denis Pithon | 79f9e63 | 2014-05-17 00:24:09 +0200 | [diff] [blame] | 748 | dev_err(physdev, "Failed to alloc netdev.\n"); |
Karl Relton | cb3126e | 2010-06-03 23:04:06 +0100 | [diff] [blame] | 749 | wlan_free_wiphy(wiphy); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 750 | result = 1; |
| 751 | } else { |
Karl Relton | cb3126e | 2010-06-03 23:04:06 +0100 | [diff] [blame] | 752 | wlandev->netdev = netdev; |
| 753 | netdev->ml_priv = wlandev; |
| 754 | netdev->netdev_ops = &p80211_netdev_ops; |
| 755 | wdev = netdev_priv(netdev); |
| 756 | wdev->wiphy = wiphy; |
| 757 | wdev->iftype = NL80211_IFTYPE_STATION; |
| 758 | netdev->ieee80211_ptr = wdev; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 759 | |
Karl Relton | cb3126e | 2010-06-03 23:04:06 +0100 | [diff] [blame] | 760 | netif_stop_queue(netdev); |
| 761 | netif_carrier_off(netdev); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 762 | } |
| 763 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 764 | return result; |
| 765 | } |
| 766 | |
| 767 | /*---------------------------------------------------------------- |
| 768 | * wlan_unsetup |
| 769 | * |
| 770 | * This function is paired with the wlan_setup routine. It should |
| 771 | * be called after unregister_wlandev. Basically, all it does is |
| 772 | * free the 'struct device' that's associated with the wlandev. |
| 773 | * We do it here because the 'struct device' isn't allocated |
| 774 | * explicitly in the driver code, it's done in wlan_setup. To |
| 775 | * do the free in the driver might seem like 'magic'. |
| 776 | * |
| 777 | * Arguments: |
| 778 | * wlandev ptr to the wlandev structure for the |
| 779 | * interface. |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 780 | * Call Context: |
| 781 | * Should be process thread. We'll assume it might be |
| 782 | * interrupt though. When we add support for statically |
| 783 | * compiled drivers, this function will be called in the |
| 784 | * context of the kernel startup code. |
| 785 | ----------------------------------------------------------------*/ |
sayli karnik | c9573a8 | 2016-09-18 15:11:14 +0530 | [diff] [blame] | 786 | void wlan_unsetup(struct wlandevice *wlandev) |
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 | struct wireless_dev *wdev; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 789 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 790 | tasklet_kill(&wlandev->rx_bh); |
| 791 | |
Karl Relton | cb3126e | 2010-06-03 23:04:06 +0100 | [diff] [blame] | 792 | if (wlandev->netdev) { |
| 793 | wdev = netdev_priv(wlandev->netdev); |
Edgardo Hames | f34e3e7 | 2010-07-21 22:31:55 -0300 | [diff] [blame] | 794 | if (wdev->wiphy) |
| 795 | wlan_free_wiphy(wdev->wiphy); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 796 | free_netdev(wlandev->netdev); |
| 797 | wlandev->netdev = NULL; |
| 798 | } |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 799 | } |
| 800 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 801 | /*---------------------------------------------------------------- |
| 802 | * register_wlandev |
| 803 | * |
| 804 | * Roughly matches the functionality of register_netdev. This function |
| 805 | * is called after the driver has successfully probed and set up the |
| 806 | * resources for the device. It's now ready to become a named device |
| 807 | * in the Linux system. |
| 808 | * |
| 809 | * First we allocate a name for the device (if not already set), then |
| 810 | * we call the Linux function register_netdevice. |
| 811 | * |
| 812 | * Arguments: |
| 813 | * wlandev ptr to the wlandev structure for the |
| 814 | * interface. |
| 815 | * Returns: |
| 816 | * zero on success, non-zero otherwise. |
| 817 | * Call Context: |
| 818 | * Can be either interrupt or not. |
| 819 | ----------------------------------------------------------------*/ |
sayli karnik | c9573a8 | 2016-09-18 15:11:14 +0530 | [diff] [blame] | 820 | int register_wlandev(struct wlandevice *wlandev) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 821 | { |
Devendra Naga | 50d6b9b | 2012-09-09 18:41:01 +0530 | [diff] [blame] | 822 | return register_netdev(wlandev->netdev); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 823 | } |
| 824 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 825 | /*---------------------------------------------------------------- |
| 826 | * unregister_wlandev |
| 827 | * |
| 828 | * Roughly matches the functionality of unregister_netdev. This |
| 829 | * function is called to remove a named device from the system. |
| 830 | * |
| 831 | * First we tell linux that the device should no longer exist. |
| 832 | * Then we remove it from the list of known wlan devices. |
| 833 | * |
| 834 | * Arguments: |
| 835 | * wlandev ptr to the wlandev structure for the |
| 836 | * interface. |
| 837 | * Returns: |
| 838 | * zero on success, non-zero otherwise. |
| 839 | * Call Context: |
| 840 | * Can be either interrupt or not. |
| 841 | ----------------------------------------------------------------*/ |
sayli karnik | c9573a8 | 2016-09-18 15:11:14 +0530 | [diff] [blame] | 842 | int unregister_wlandev(struct wlandevice *wlandev) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 843 | { |
| 844 | struct sk_buff *skb; |
| 845 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 846 | unregister_netdev(wlandev->netdev); |
| 847 | |
| 848 | /* Now to clean out the rx queue */ |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 849 | while ((skb = skb_dequeue(&wlandev->nsd_rxq))) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 850 | dev_kfree_skb(skb); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 851 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 852 | return 0; |
| 853 | } |
| 854 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 855 | /*---------------------------------------------------------------- |
| 856 | * p80211netdev_hwremoved |
| 857 | * |
| 858 | * Hardware removed notification. This function should be called |
| 859 | * immediately after an MSD has detected that the underlying hardware |
| 860 | * has been yanked out from under us. The primary things we need |
| 861 | * to do are: |
| 862 | * - Mark the wlandev |
| 863 | * - Prevent any further traffic from the knetdev i/f |
| 864 | * - Prevent any further requests from mgmt i/f |
| 865 | * - If there are any waitq'd mgmt requests or mgmt-frame exchanges, |
| 866 | * shut them down. |
| 867 | * - Call the MSD hwremoved function. |
| 868 | * |
| 869 | * The remainder of the cleanup will be handled by unregister(). |
| 870 | * Our primary goal here is to prevent as much tickling of the MSD |
| 871 | * as possible since the MSD is already in a 'wounded' state. |
| 872 | * |
| 873 | * TODO: As new features are added, this function should be |
| 874 | * updated. |
| 875 | * |
| 876 | * Arguments: |
| 877 | * wlandev WLAN network device structure |
| 878 | * Returns: |
| 879 | * nothing |
| 880 | * Side effects: |
| 881 | * |
| 882 | * Call context: |
| 883 | * Usually interrupt. |
| 884 | ----------------------------------------------------------------*/ |
sayli karnik | c9573a8 | 2016-09-18 15:11:14 +0530 | [diff] [blame] | 885 | void p80211netdev_hwremoved(struct wlandevice *wlandev) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 886 | { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 887 | wlandev->hwremoved = 1; |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 888 | if (wlandev->state == WLAN_DEVICE_OPEN) |
Solomon Peachy | cbec30c | 2008-10-29 10:42:57 -0400 | [diff] [blame] | 889 | netif_stop_queue(wlandev->netdev); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 890 | |
| 891 | netif_device_detach(wlandev->netdev); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 892 | } |
| 893 | |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 894 | /*---------------------------------------------------------------- |
| 895 | * p80211_rx_typedrop |
| 896 | * |
| 897 | * Classifies the frame, increments the appropriate counter, and |
| 898 | * returns 0|1|2 indicating whether the driver should handle, ignore, or |
| 899 | * drop the frame |
| 900 | * |
| 901 | * Arguments: |
| 902 | * wlandev wlan device structure |
| 903 | * fc frame control field |
| 904 | * |
| 905 | * Returns: |
| 906 | * zero if the frame should be handled by the driver, |
| 907 | * one if the frame should be ignored |
| 908 | * anything else means we drop it. |
| 909 | * |
| 910 | * Side effects: |
| 911 | * |
| 912 | * Call context: |
| 913 | * interrupt |
| 914 | ----------------------------------------------------------------*/ |
sayli karnik | c9573a8 | 2016-09-18 15:11:14 +0530 | [diff] [blame] | 915 | static int p80211_rx_typedrop(struct wlandevice *wlandev, u16 fc) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 916 | { |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 917 | u16 ftype; |
| 918 | u16 fstype; |
| 919 | int drop = 0; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 920 | /* Classify frame, increment counter */ |
| 921 | ftype = WLAN_GET_FC_FTYPE(fc); |
| 922 | fstype = WLAN_GET_FC_FSTYPE(fc); |
| 923 | #if 0 |
Denis Pithon | 79f9e63 | 2014-05-17 00:24:09 +0200 | [diff] [blame] | 924 | netdev_dbg(wlandev->netdev, "rx_typedrop : ftype=%d fstype=%d.\n", |
| 925 | ftype, fstype); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 926 | #endif |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 927 | switch (ftype) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 928 | case WLAN_FTYPE_MGMT: |
| 929 | if ((wlandev->netdev->flags & IFF_PROMISC) || |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 930 | (wlandev->netdev->flags & IFF_ALLMULTI)) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 931 | drop = 1; |
| 932 | break; |
| 933 | } |
Denis Pithon | 79f9e63 | 2014-05-17 00:24:09 +0200 | [diff] [blame] | 934 | netdev_dbg(wlandev->netdev, "rx'd mgmt:\n"); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 935 | wlandev->rx.mgmt++; |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 936 | switch (fstype) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 937 | case WLAN_FSTYPE_ASSOCREQ: |
| 938 | /* printk("assocreq"); */ |
| 939 | wlandev->rx.assocreq++; |
| 940 | break; |
| 941 | case WLAN_FSTYPE_ASSOCRESP: |
| 942 | /* printk("assocresp"); */ |
| 943 | wlandev->rx.assocresp++; |
| 944 | break; |
| 945 | case WLAN_FSTYPE_REASSOCREQ: |
| 946 | /* printk("reassocreq"); */ |
| 947 | wlandev->rx.reassocreq++; |
| 948 | break; |
| 949 | case WLAN_FSTYPE_REASSOCRESP: |
| 950 | /* printk("reassocresp"); */ |
| 951 | wlandev->rx.reassocresp++; |
| 952 | break; |
| 953 | case WLAN_FSTYPE_PROBEREQ: |
| 954 | /* printk("probereq"); */ |
| 955 | wlandev->rx.probereq++; |
| 956 | break; |
| 957 | case WLAN_FSTYPE_PROBERESP: |
| 958 | /* printk("proberesp"); */ |
| 959 | wlandev->rx.proberesp++; |
| 960 | break; |
| 961 | case WLAN_FSTYPE_BEACON: |
| 962 | /* printk("beacon"); */ |
| 963 | wlandev->rx.beacon++; |
| 964 | break; |
| 965 | case WLAN_FSTYPE_ATIM: |
| 966 | /* printk("atim"); */ |
| 967 | wlandev->rx.atim++; |
| 968 | break; |
| 969 | case WLAN_FSTYPE_DISASSOC: |
| 970 | /* printk("disassoc"); */ |
| 971 | wlandev->rx.disassoc++; |
| 972 | break; |
| 973 | case WLAN_FSTYPE_AUTHEN: |
| 974 | /* printk("authen"); */ |
| 975 | wlandev->rx.authen++; |
| 976 | break; |
| 977 | case WLAN_FSTYPE_DEAUTHEN: |
| 978 | /* printk("deauthen"); */ |
| 979 | wlandev->rx.deauthen++; |
| 980 | break; |
| 981 | default: |
| 982 | /* printk("unknown"); */ |
| 983 | wlandev->rx.mgmt_unknown++; |
| 984 | break; |
| 985 | } |
| 986 | /* printk("\n"); */ |
| 987 | drop = 2; |
| 988 | break; |
| 989 | |
| 990 | case WLAN_FTYPE_CTL: |
| 991 | if ((wlandev->netdev->flags & IFF_PROMISC) || |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 992 | (wlandev->netdev->flags & IFF_ALLMULTI)) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 993 | drop = 1; |
| 994 | break; |
| 995 | } |
Denis Pithon | 79f9e63 | 2014-05-17 00:24:09 +0200 | [diff] [blame] | 996 | netdev_dbg(wlandev->netdev, "rx'd ctl:\n"); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 997 | wlandev->rx.ctl++; |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 998 | switch (fstype) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 999 | case WLAN_FSTYPE_PSPOLL: |
| 1000 | /* printk("pspoll"); */ |
| 1001 | wlandev->rx.pspoll++; |
| 1002 | break; |
| 1003 | case WLAN_FSTYPE_RTS: |
| 1004 | /* printk("rts"); */ |
| 1005 | wlandev->rx.rts++; |
| 1006 | break; |
| 1007 | case WLAN_FSTYPE_CTS: |
| 1008 | /* printk("cts"); */ |
| 1009 | wlandev->rx.cts++; |
| 1010 | break; |
| 1011 | case WLAN_FSTYPE_ACK: |
| 1012 | /* printk("ack"); */ |
| 1013 | wlandev->rx.ack++; |
| 1014 | break; |
| 1015 | case WLAN_FSTYPE_CFEND: |
| 1016 | /* printk("cfend"); */ |
| 1017 | wlandev->rx.cfend++; |
| 1018 | break; |
| 1019 | case WLAN_FSTYPE_CFENDCFACK: |
| 1020 | /* printk("cfendcfack"); */ |
| 1021 | wlandev->rx.cfendcfack++; |
| 1022 | break; |
| 1023 | default: |
| 1024 | /* printk("unknown"); */ |
| 1025 | wlandev->rx.ctl_unknown++; |
| 1026 | break; |
| 1027 | } |
| 1028 | /* printk("\n"); */ |
| 1029 | drop = 2; |
| 1030 | break; |
| 1031 | |
| 1032 | case WLAN_FTYPE_DATA: |
| 1033 | wlandev->rx.data++; |
Moritz Muehlenhoff | b4b3f0d | 2009-02-08 02:21:01 +0100 | [diff] [blame] | 1034 | switch (fstype) { |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 1035 | case WLAN_FSTYPE_DATAONLY: |
| 1036 | wlandev->rx.dataonly++; |
| 1037 | break; |
| 1038 | case WLAN_FSTYPE_DATA_CFACK: |
| 1039 | wlandev->rx.data_cfack++; |
| 1040 | break; |
| 1041 | case WLAN_FSTYPE_DATA_CFPOLL: |
| 1042 | wlandev->rx.data_cfpoll++; |
| 1043 | break; |
| 1044 | case WLAN_FSTYPE_DATA_CFACK_CFPOLL: |
| 1045 | wlandev->rx.data__cfack_cfpoll++; |
| 1046 | break; |
| 1047 | case WLAN_FSTYPE_NULL: |
Denis Pithon | 79f9e63 | 2014-05-17 00:24:09 +0200 | [diff] [blame] | 1048 | netdev_dbg(wlandev->netdev, "rx'd data:null\n"); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 1049 | wlandev->rx.null++; |
| 1050 | break; |
| 1051 | case WLAN_FSTYPE_CFACK: |
Denis Pithon | 79f9e63 | 2014-05-17 00:24:09 +0200 | [diff] [blame] | 1052 | netdev_dbg(wlandev->netdev, "rx'd data:cfack\n"); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 1053 | wlandev->rx.cfack++; |
| 1054 | break; |
| 1055 | case WLAN_FSTYPE_CFPOLL: |
Denis Pithon | 79f9e63 | 2014-05-17 00:24:09 +0200 | [diff] [blame] | 1056 | netdev_dbg(wlandev->netdev, "rx'd data:cfpoll\n"); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 1057 | wlandev->rx.cfpoll++; |
| 1058 | break; |
| 1059 | case WLAN_FSTYPE_CFACK_CFPOLL: |
Denis Pithon | 79f9e63 | 2014-05-17 00:24:09 +0200 | [diff] [blame] | 1060 | netdev_dbg(wlandev->netdev, "rx'd data:cfack_cfpoll\n"); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 1061 | wlandev->rx.cfack_cfpoll++; |
| 1062 | break; |
| 1063 | default: |
| 1064 | /* printk("unknown"); */ |
| 1065 | wlandev->rx.data_unknown++; |
| 1066 | break; |
| 1067 | } |
| 1068 | |
| 1069 | break; |
| 1070 | } |
| 1071 | return drop; |
| 1072 | } |
| 1073 | |
Sergio Paracuellos | 1906698 | 2016-09-27 19:33:51 +0200 | [diff] [blame] | 1074 | static void p80211knetdev_tx_timeout(struct net_device *netdev) |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 1075 | { |
sayli karnik | c9573a8 | 2016-09-18 15:11:14 +0530 | [diff] [blame] | 1076 | struct wlandevice *wlandev = netdev->ml_priv; |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 1077 | |
| 1078 | if (wlandev->tx_timeout) { |
| 1079 | wlandev->tx_timeout(wlandev); |
| 1080 | } else { |
Denis Pithon | 79f9e63 | 2014-05-17 00:24:09 +0200 | [diff] [blame] | 1081 | netdev_warn(netdev, "Implement tx_timeout for %s\n", |
| 1082 | wlandev->nsdname); |
Solomon Peachy | cbec30c | 2008-10-29 10:42:57 -0400 | [diff] [blame] | 1083 | netif_wake_queue(wlandev->netdev); |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 1084 | } |
Greg Kroah-Hartman | 00b3ed1 | 2008-10-02 11:29:28 -0700 | [diff] [blame] | 1085 | } |