1 // SPDX-License-Identifier: (GPL-2.0 OR MPL-1.1)
2 /* src/p80211/p80211knetdev.c
4 * Linux Kernel net device interface
6 * Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.
7 * --------------------------------------------------------------------
11 * The contents of this file are subject to the Mozilla Public
12 * License Version 1.1 (the "License"); you may not use this file
13 * except in compliance with the License. You may obtain a copy of
14 * the License at http://www.mozilla.org/MPL/
16 * Software distributed under the License is distributed on an "AS
17 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
18 * implied. See the License for the specific language governing
19 * rights and limitations under the License.
21 * Alternatively, the contents of this file may be used under the
22 * terms of the GNU Public License version 2 (the "GPL"), in which
23 * case the provisions of the GPL are applicable instead of the
24 * above. If you wish to allow the use of your version of this file
25 * only under the terms of the GPL and not to allow others to use
26 * your version of this file under the MPL, indicate your decision
27 * by deleting the provisions above and replace them with the notice
28 * and other provisions required by the GPL. If you do not delete
29 * the provisions above, a recipient may use your version of this
30 * file under either the MPL or the GPL.
32 * --------------------------------------------------------------------
34 * Inquiries regarding the linux-wlan Open Source project can be
37 * AbsoluteValue Systems Inc.
39 * http://www.linux-wlan.com
41 * --------------------------------------------------------------------
43 * Portions of the development of this software were funded by
44 * Intersil Corporation as part of PRISM(R) chipset product development.
46 * --------------------------------------------------------------------
48 * The functions required for a Linux network device are defined here.
50 * --------------------------------------------------------------------
53 #include <linux/module.h>
54 #include <linux/kernel.h>
55 #include <linux/sched.h>
56 #include <linux/types.h>
57 #include <linux/skbuff.h>
58 #include <linux/slab.h>
59 #include <linux/proc_fs.h>
60 #include <linux/interrupt.h>
61 #include <linux/netdevice.h>
62 #include <linux/kmod.h>
63 #include <linux/if_arp.h>
64 #include <linux/wireless.h>
65 #include <linux/sockios.h>
66 #include <linux/etherdevice.h>
67 #include <linux/if_ether.h>
68 #include <linux/byteorder/generic.h>
69 #include <linux/bitops.h>
70 #include <linux/uaccess.h>
71 #include <asm/byteorder.h>
74 #include <linux/ethtool.h>
77 #include <net/iw_handler.h>
78 #include <net/net_namespace.h>
79 #include <net/cfg80211.h>
81 #include "p80211types.h"
82 #include "p80211hdr.h"
83 #include "p80211conv.h"
84 #include "p80211mgmt.h"
85 #include "p80211msg.h"
86 #include "p80211netdev.h"
87 #include "p80211ioctl.h"
88 #include "p80211req.h"
89 #include "p80211metastruct.h"
90 #include "p80211metadef.h"
94 /* netdevice method functions */
95 static int p80211knetdev_init(struct net_device *netdev);
96 static int p80211knetdev_open(struct net_device *netdev);
97 static int p80211knetdev_stop(struct net_device *netdev);
98 static netdev_tx_t p80211knetdev_hard_start_xmit(struct sk_buff *skb,
99 struct net_device *netdev);
100 static void p80211knetdev_set_multicast_list(struct net_device *dev);
101 static int p80211knetdev_do_ioctl(struct net_device *dev, struct ifreq *ifr,
103 static int p80211knetdev_set_mac_address(struct net_device *dev, void *addr);
104 static void p80211knetdev_tx_timeout(struct net_device *netdev, unsigned int txqueue);
105 static int p80211_rx_typedrop(struct wlandevice *wlandev, u16 fc);
107 int wlan_watchdog = 5000;
108 module_param(wlan_watchdog, int, 0644);
109 MODULE_PARM_DESC(wlan_watchdog, "transmit timeout in milliseconds");
111 int wlan_wext_write = 1;
112 module_param(wlan_wext_write, int, 0644);
113 MODULE_PARM_DESC(wlan_wext_write, "enable write wireless extensions");
115 /*----------------------------------------------------------------
118 * Init method for a Linux netdevice. Called in response to
126 *----------------------------------------------------------------
128 static int p80211knetdev_init(struct net_device *netdev)
130 /* Called in response to register_netdev */
131 /* This is usually the probe function, but the probe has */
132 /* already been done by the MSD and the create_kdev */
133 /* function. All we do here is return success */
137 /*----------------------------------------------------------------
140 * Linux netdevice open method. Following a successful call here,
141 * the device is supposed to be ready for tx and rx. In our
142 * situation that may not be entirely true due to the state of the
146 * netdev Linux network device structure
149 * zero on success, non-zero otherwise
150 *----------------------------------------------------------------
152 static int p80211knetdev_open(struct net_device *netdev)
154 int result = 0; /* success */
155 struct wlandevice *wlandev = netdev->ml_priv;
157 /* Check to make sure the MSD is running */
158 if (wlandev->msdstate != WLAN_MSD_RUNNING)
161 /* Tell the MSD to open */
163 result = wlandev->open(wlandev);
165 netif_start_queue(wlandev->netdev);
166 wlandev->state = WLAN_DEVICE_OPEN;
175 /*----------------------------------------------------------------
178 * Linux netdevice stop (close) method. Following this call,
179 * no frames should go up or down through this interface.
182 * netdev Linux network device structure
185 * zero on success, non-zero otherwise
186 *----------------------------------------------------------------
188 static int p80211knetdev_stop(struct net_device *netdev)
191 struct wlandevice *wlandev = netdev->ml_priv;
194 result = wlandev->close(wlandev);
196 netif_stop_queue(wlandev->netdev);
197 wlandev->state = WLAN_DEVICE_CLOSED;
202 /*----------------------------------------------------------------
205 * Frame receive function called by the mac specific driver.
208 * wlandev WLAN network device structure
209 * skb skbuff containing a full 802.11 frame.
214 *----------------------------------------------------------------
216 void p80211netdev_rx(struct wlandevice *wlandev, struct sk_buff *skb)
218 /* Enqueue for post-irq processing */
219 skb_queue_tail(&wlandev->nsd_rxq, skb);
220 tasklet_schedule(&wlandev->rx_bh);
223 #define CONV_TO_ETHER_SKIPPED 0x01
224 #define CONV_TO_ETHER_FAILED 0x02
227 * p80211_convert_to_ether - conversion from 802.11 frame to ethernet frame
228 * @wlandev: pointer to WLAN device
229 * @skb: pointer to socket buffer
231 * Returns: 0 if conversion succeeded
232 * CONV_TO_ETHER_FAILED if conversion failed
233 * CONV_TO_ETHER_SKIPPED if frame is ignored
235 static int p80211_convert_to_ether(struct wlandevice *wlandev,
238 struct p80211_hdr *hdr;
240 hdr = (struct p80211_hdr *)skb->data;
241 if (p80211_rx_typedrop(wlandev, le16_to_cpu(hdr->frame_control)))
242 return CONV_TO_ETHER_SKIPPED;
244 /* perform mcast filtering: allow my local address through but reject
245 * anything else that isn't multicast
247 if (wlandev->netdev->flags & IFF_ALLMULTI) {
248 if (!ether_addr_equal_unaligned(wlandev->netdev->dev_addr,
250 if (!is_multicast_ether_addr(hdr->address1))
251 return CONV_TO_ETHER_SKIPPED;
255 if (skb_p80211_to_ether(wlandev, wlandev->ethconv, skb) == 0) {
256 wlandev->netdev->stats.rx_packets++;
257 wlandev->netdev->stats.rx_bytes += skb->len;
262 netdev_dbg(wlandev->netdev, "%s failed.\n", __func__);
263 return CONV_TO_ETHER_FAILED;
267 * p80211netdev_rx_bh - deferred processing of all received frames
269 * @t: pointer to the tasklet associated with this handler
271 static void p80211netdev_rx_bh(struct tasklet_struct *t)
273 struct wlandevice *wlandev = from_tasklet(wlandev, t, rx_bh);
274 struct sk_buff *skb = NULL;
275 struct net_device *dev = wlandev->netdev;
277 /* Let's empty our queue */
278 while ((skb = skb_dequeue(&wlandev->nsd_rxq))) {
279 if (wlandev->state == WLAN_DEVICE_OPEN) {
280 if (dev->type != ARPHRD_ETHER) {
281 /* RAW frame; we shouldn't convert it */
282 /* XXX Append the Prism Header here instead. */
284 /* set up various data fields */
286 skb_reset_mac_header(skb);
287 skb->ip_summed = CHECKSUM_NONE;
288 skb->pkt_type = PACKET_OTHERHOST;
289 skb->protocol = htons(ETH_P_80211_RAW);
291 dev->stats.rx_packets++;
292 dev->stats.rx_bytes += skb->len;
296 if (!p80211_convert_to_ether(wlandev, skb))
304 /*----------------------------------------------------------------
305 * p80211knetdev_hard_start_xmit
307 * Linux netdevice method for transmitting a frame.
310 * skb Linux sk_buff containing the frame.
311 * netdev Linux netdevice.
314 * If the lower layers report that buffers are full. netdev->tbusy
315 * will be set to prevent higher layers from sending more traffic.
317 * Note: If this function returns non-zero, higher layers retain
318 * ownership of the skb.
321 * zero on success, non-zero on failure.
322 *----------------------------------------------------------------
324 static netdev_tx_t p80211knetdev_hard_start_xmit(struct sk_buff *skb,
325 struct net_device *netdev)
329 struct wlandevice *wlandev = netdev->ml_priv;
330 struct p80211_hdr p80211_hdr;
331 struct p80211_metawep p80211_wep;
333 p80211_wep.data = NULL;
338 if (wlandev->state != WLAN_DEVICE_OPEN) {
343 memset(&p80211_hdr, 0, sizeof(p80211_hdr));
344 memset(&p80211_wep, 0, sizeof(p80211_wep));
346 if (netif_queue_stopped(netdev)) {
347 netdev_dbg(netdev, "called when queue stopped.\n");
352 netif_stop_queue(netdev);
354 /* Check to see that a valid mode is set */
355 switch (wlandev->macmode) {
356 case WLAN_MACMODE_IBSS_STA:
357 case WLAN_MACMODE_ESS_STA:
358 case WLAN_MACMODE_ESS_AP:
361 /* Mode isn't set yet, just drop the frame
362 * and return success .
363 * TODO: we need a saner way to handle this
365 if (be16_to_cpu(skb->protocol) != ETH_P_80211_RAW) {
366 netif_start_queue(wlandev->netdev);
367 netdev_notice(netdev, "Tx attempt prior to association, frame dropped.\n");
368 netdev->stats.tx_dropped++;
375 /* Check for raw transmits */
376 if (be16_to_cpu(skb->protocol) == ETH_P_80211_RAW) {
377 if (!capable(CAP_NET_ADMIN)) {
381 /* move the header over */
382 memcpy(&p80211_hdr, skb->data, sizeof(p80211_hdr));
383 skb_pull(skb, sizeof(p80211_hdr));
385 if (skb_ether_to_p80211
386 (wlandev, wlandev->ethconv, skb, &p80211_hdr,
389 netdev_dbg(netdev, "ether_to_80211(%d) failed.\n",
395 if (!wlandev->txframe) {
400 netif_trans_update(netdev);
402 netdev->stats.tx_packets++;
403 /* count only the packet payload */
404 netdev->stats.tx_bytes += skb->len;
406 txresult = wlandev->txframe(wlandev, skb, &p80211_hdr, &p80211_wep);
409 /* success and more buf */
410 /* avail, re: hw_txdata */
411 netif_wake_queue(wlandev->netdev);
412 result = NETDEV_TX_OK;
413 } else if (txresult == 1) {
414 /* success, no more avail */
415 netdev_dbg(netdev, "txframe success, no more bufs\n");
416 /* netdev->tbusy = 1; don't set here, irqhdlr */
417 /* may have already cleared it */
418 result = NETDEV_TX_OK;
419 } else if (txresult == 2) {
420 /* alloc failure, drop frame */
421 netdev_dbg(netdev, "txframe returned alloc_fail\n");
422 result = NETDEV_TX_BUSY;
424 /* buffer full or queue busy, drop frame. */
425 netdev_dbg(netdev, "txframe returned full or busy\n");
426 result = NETDEV_TX_BUSY;
430 /* Free up the WEP buffer if it's not the same as the skb */
431 if ((p80211_wep.data) && (p80211_wep.data != skb->data))
432 kfree_sensitive(p80211_wep.data);
434 /* we always free the skb here, never in a lower level. */
441 /*----------------------------------------------------------------
442 * p80211knetdev_set_multicast_list
444 * Called from higher layers whenever there's a need to set/clear
445 * promiscuous mode or rewrite the multicast list.
452 *----------------------------------------------------------------
454 static void p80211knetdev_set_multicast_list(struct net_device *dev)
456 struct wlandevice *wlandev = dev->ml_priv;
458 /* TODO: real multicast support as well */
460 if (wlandev->set_multicast_list)
461 wlandev->set_multicast_list(wlandev, dev);
466 static int p80211netdev_ethtool(struct wlandevice *wlandev,
467 void __user *useraddr)
470 struct ethtool_drvinfo info;
471 struct ethtool_value edata;
473 memset(&info, 0, sizeof(info));
474 memset(&edata, 0, sizeof(edata));
476 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd)))
480 case ETHTOOL_GDRVINFO:
482 snprintf(info.driver, sizeof(info.driver), "p80211_%s",
484 snprintf(info.version, sizeof(info.version), "%s",
487 if (copy_to_user(useraddr, &info, sizeof(info)))
494 if (wlandev->linkstatus &&
495 (wlandev->macmode != WLAN_MACMODE_NONE)) {
501 if (copy_to_user(useraddr, &edata, sizeof(edata)))
512 /*----------------------------------------------------------------
513 * p80211knetdev_do_ioctl
515 * Handle an ioctl call on one of our devices. Everything Linux
516 * ioctl specific is done here. Then we pass the contents of the
517 * ifr->data to the request message handler.
520 * dev Linux kernel netdevice
521 * ifr Our private ioctl request structure, typed for the
522 * generic struct ifreq so we can use ptr to func
526 * zero on success, a negative errno on failure. Possible values:
527 * -ENETDOWN Device isn't up.
528 * -EBUSY cmd already in progress
529 * -ETIME p80211 cmd timed out (MSD may have its own timers)
530 * -EFAULT memory fault copying msg from user buffer
531 * -ENOMEM unable to allocate kernel msg buffer
532 * -EINVAL bad magic, it the cmd really for us?
533 * -EintR sleeping on cmd, awakened by signal, cmd cancelled.
536 * Process thread (ioctl caller). TODO: SMP support may require
538 *----------------------------------------------------------------
540 static int p80211knetdev_do_ioctl(struct net_device *dev,
541 struct ifreq *ifr, int cmd)
544 struct p80211ioctl_req *req = (struct p80211ioctl_req *)ifr;
545 struct wlandevice *wlandev = dev->ml_priv;
548 netdev_dbg(dev, "rx'd ioctl, cmd=%d, len=%d\n", cmd, req->len);
551 if (cmd == SIOCETHTOOL) {
553 p80211netdev_ethtool(wlandev, (void __user *)ifr->ifr_data);
558 /* Test the magic, assume ifr is good if it's there */
559 if (req->magic != P80211_IOCTL_MAGIC) {
564 if (cmd == P80211_IFTEST) {
567 } else if (cmd != P80211_IFREQ) {
572 msgbuf = memdup_user(req->data, req->len);
573 if (IS_ERR(msgbuf)) {
574 result = PTR_ERR(msgbuf);
578 result = p80211req_dorequest(wlandev, msgbuf);
582 (req->data, msgbuf, req->len)) {
589 /* If allocate,copyfrom or copyto fails, return errno */
593 /*----------------------------------------------------------------
594 * p80211knetdev_set_mac_address
596 * Handles the ioctl for changing the MACAddress of a netdevice
598 * references: linux/netdevice.h and drivers/net/net_init.c
600 * NOTE: [MSM] We only prevent address changes when the netdev is
601 * up. We don't control anything based on dot11 state. If the
602 * address is changed on a STA that's currently associated, you
603 * will probably lose the ability to send and receive data frames.
604 * Just be aware. Therefore, this should usually only be done
605 * prior to scan/join/auth/assoc.
608 * dev netdevice struct
609 * addr the new MACAddress (a struct)
612 * zero on success, a negative errno on failure. Possible values:
613 * -EBUSY device is bussy (cmd not possible)
614 * -and errors returned by: p80211req_dorequest(..)
616 * by: Collin R. Mulliner <collin@mulliner.org>
617 *----------------------------------------------------------------
619 static int p80211knetdev_set_mac_address(struct net_device *dev, void *addr)
621 struct sockaddr *new_addr = addr;
622 struct p80211msg_dot11req_mibset dot11req;
623 struct p80211item_unk392 *mibattr;
624 struct p80211item_pstr6 *macaddr;
625 struct p80211item_uint32 *resultcode;
628 /* If we're running, we don't allow MAC address changes */
629 if (netif_running(dev))
632 /* Set up some convenience pointers. */
633 mibattr = &dot11req.mibattribute;
634 macaddr = (struct p80211item_pstr6 *)&mibattr->data;
635 resultcode = &dot11req.resultcode;
637 /* Set up a dot11req_mibset */
638 memset(&dot11req, 0, sizeof(dot11req));
639 dot11req.msgcode = DIDMSG_DOT11REQ_MIBSET;
640 dot11req.msglen = sizeof(dot11req);
641 memcpy(dot11req.devname,
642 ((struct wlandevice *)dev->ml_priv)->name,
643 WLAN_DEVNAMELEN_MAX - 1);
645 /* Set up the mibattribute argument */
646 mibattr->did = DIDMSG_DOT11REQ_MIBSET_MIBATTRIBUTE;
647 mibattr->status = P80211ENUM_msgitem_status_data_ok;
648 mibattr->len = sizeof(mibattr->data);
650 macaddr->did = DIDMIB_DOT11MAC_OPERATIONTABLE_MACADDRESS;
651 macaddr->status = P80211ENUM_msgitem_status_data_ok;
652 macaddr->len = sizeof(macaddr->data);
653 macaddr->data.len = ETH_ALEN;
654 memcpy(&macaddr->data.data, new_addr->sa_data, ETH_ALEN);
656 /* Set up the resultcode argument */
657 resultcode->did = DIDMSG_DOT11REQ_MIBSET_RESULTCODE;
658 resultcode->status = P80211ENUM_msgitem_status_no_value;
659 resultcode->len = sizeof(resultcode->data);
660 resultcode->data = 0;
662 /* now fire the request */
663 result = p80211req_dorequest(dev->ml_priv, (u8 *)&dot11req);
665 /* If the request wasn't successful, report an error and don't
666 * change the netdev address
668 if (result != 0 || resultcode->data != P80211ENUM_resultcode_success) {
669 netdev_err(dev, "Low-level driver failed dot11req_mibset(dot11MACAddress).\n");
670 result = -EADDRNOTAVAIL;
672 /* everything's ok, change the addr in netdev */
673 memcpy(dev->dev_addr, new_addr->sa_data, dev->addr_len);
679 static const struct net_device_ops p80211_netdev_ops = {
680 .ndo_init = p80211knetdev_init,
681 .ndo_open = p80211knetdev_open,
682 .ndo_stop = p80211knetdev_stop,
683 .ndo_start_xmit = p80211knetdev_hard_start_xmit,
684 .ndo_set_rx_mode = p80211knetdev_set_multicast_list,
685 .ndo_do_ioctl = p80211knetdev_do_ioctl,
686 .ndo_set_mac_address = p80211knetdev_set_mac_address,
687 .ndo_tx_timeout = p80211knetdev_tx_timeout,
688 .ndo_validate_addr = eth_validate_addr,
691 /*----------------------------------------------------------------
694 * Roughly matches the functionality of ether_setup. Here
695 * we set up any members of the wlandevice structure that are common
696 * to all devices. Additionally, we allocate a linux 'struct device'
697 * and perform the same setup as ether_setup.
699 * Note: It's important that the caller have setup the wlandev->name
700 * ptr prior to calling this function.
703 * wlandev ptr to the wlandev structure for the
705 * physdev ptr to usb device
707 * zero on success, non-zero otherwise.
709 * Should be process thread. We'll assume it might be
710 * interrupt though. When we add support for statically
711 * compiled drivers, this function will be called in the
712 * context of the kernel startup code.
713 *----------------------------------------------------------------
715 int wlan_setup(struct wlandevice *wlandev, struct device *physdev)
718 struct net_device *netdev;
720 struct wireless_dev *wdev;
722 /* Set up the wlandev */
723 wlandev->state = WLAN_DEVICE_CLOSED;
724 wlandev->ethconv = WLAN_ETHCONV_8021h;
725 wlandev->macmode = WLAN_MACMODE_NONE;
727 /* Set up the rx queue */
728 skb_queue_head_init(&wlandev->nsd_rxq);
729 tasklet_setup(&wlandev->rx_bh, p80211netdev_rx_bh);
731 /* Allocate and initialize the wiphy struct */
732 wiphy = wlan_create_wiphy(physdev, wlandev);
734 dev_err(physdev, "Failed to alloc wiphy.\n");
738 /* Allocate and initialize the struct device */
739 netdev = alloc_netdev(sizeof(struct wireless_dev), "wlan%d",
740 NET_NAME_UNKNOWN, ether_setup);
742 dev_err(physdev, "Failed to alloc netdev.\n");
743 wlan_free_wiphy(wiphy);
746 wlandev->netdev = netdev;
747 netdev->ml_priv = wlandev;
748 netdev->netdev_ops = &p80211_netdev_ops;
749 wdev = netdev_priv(netdev);
751 wdev->iftype = NL80211_IFTYPE_STATION;
752 netdev->ieee80211_ptr = wdev;
753 netdev->min_mtu = 68;
754 /* 2312 is max 802.11 payload, 20 is overhead,
755 * (ether + llc + snap) and another 8 for wep.
757 netdev->max_mtu = (2312 - 20 - 8);
759 netif_stop_queue(netdev);
760 netif_carrier_off(netdev);
766 /*----------------------------------------------------------------
769 * This function is paired with the wlan_setup routine. It should
770 * be called after unregister_wlandev. Basically, all it does is
771 * free the 'struct device' that's associated with the wlandev.
772 * We do it here because the 'struct device' isn't allocated
773 * explicitly in the driver code, it's done in wlan_setup. To
774 * do the free in the driver might seem like 'magic'.
777 * wlandev ptr to the wlandev structure for the
780 * Should be process thread. We'll assume it might be
781 * interrupt though. When we add support for statically
782 * compiled drivers, this function will be called in the
783 * context of the kernel startup code.
784 *----------------------------------------------------------------
786 void wlan_unsetup(struct wlandevice *wlandev)
788 struct wireless_dev *wdev;
790 tasklet_kill(&wlandev->rx_bh);
792 if (wlandev->netdev) {
793 wdev = netdev_priv(wlandev->netdev);
795 wlan_free_wiphy(wdev->wiphy);
796 free_netdev(wlandev->netdev);
797 wlandev->netdev = NULL;
801 /*----------------------------------------------------------------
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.
809 * First we allocate a name for the device (if not already set), then
810 * we call the Linux function register_netdevice.
813 * wlandev ptr to the wlandev structure for the
816 * zero on success, non-zero otherwise.
818 * Can be either interrupt or not.
819 *----------------------------------------------------------------
821 int register_wlandev(struct wlandevice *wlandev)
823 return register_netdev(wlandev->netdev);
826 /*----------------------------------------------------------------
829 * Roughly matches the functionality of unregister_netdev. This
830 * function is called to remove a named device from the system.
832 * First we tell linux that the device should no longer exist.
833 * Then we remove it from the list of known wlan devices.
836 * wlandev ptr to the wlandev structure for the
839 * zero on success, non-zero otherwise.
841 * Can be either interrupt or not.
842 *----------------------------------------------------------------
844 int unregister_wlandev(struct wlandevice *wlandev)
848 unregister_netdev(wlandev->netdev);
850 /* Now to clean out the rx queue */
851 while ((skb = skb_dequeue(&wlandev->nsd_rxq)))
857 /*----------------------------------------------------------------
858 * p80211netdev_hwremoved
860 * Hardware removed notification. This function should be called
861 * immediately after an MSD has detected that the underlying hardware
862 * has been yanked out from under us. The primary things we need
865 * - Prevent any further traffic from the knetdev i/f
866 * - Prevent any further requests from mgmt i/f
867 * - If there are any waitq'd mgmt requests or mgmt-frame exchanges,
869 * - Call the MSD hwremoved function.
871 * The remainder of the cleanup will be handled by unregister().
872 * Our primary goal here is to prevent as much tickling of the MSD
873 * as possible since the MSD is already in a 'wounded' state.
875 * TODO: As new features are added, this function should be
879 * wlandev WLAN network device structure
886 *----------------------------------------------------------------
888 void p80211netdev_hwremoved(struct wlandevice *wlandev)
890 wlandev->hwremoved = 1;
891 if (wlandev->state == WLAN_DEVICE_OPEN)
892 netif_stop_queue(wlandev->netdev);
894 netif_device_detach(wlandev->netdev);
897 /*----------------------------------------------------------------
900 * Classifies the frame, increments the appropriate counter, and
901 * returns 0|1|2 indicating whether the driver should handle, ignore, or
905 * wlandev wlan device structure
906 * fc frame control field
909 * zero if the frame should be handled by the driver,
910 * one if the frame should be ignored
911 * anything else means we drop it.
917 *----------------------------------------------------------------
919 static int p80211_rx_typedrop(struct wlandevice *wlandev, u16 fc)
924 /* Classify frame, increment counter */
925 ftype = WLAN_GET_FC_FTYPE(fc);
926 fstype = WLAN_GET_FC_FSTYPE(fc);
928 case WLAN_FTYPE_MGMT:
929 if ((wlandev->netdev->flags & IFF_PROMISC) ||
930 (wlandev->netdev->flags & IFF_ALLMULTI)) {
934 netdev_dbg(wlandev->netdev, "rx'd mgmt:\n");
937 case WLAN_FSTYPE_ASSOCREQ:
938 /* printk("assocreq"); */
939 wlandev->rx.assocreq++;
941 case WLAN_FSTYPE_ASSOCRESP:
942 /* printk("assocresp"); */
943 wlandev->rx.assocresp++;
945 case WLAN_FSTYPE_REASSOCREQ:
946 /* printk("reassocreq"); */
947 wlandev->rx.reassocreq++;
949 case WLAN_FSTYPE_REASSOCRESP:
950 /* printk("reassocresp"); */
951 wlandev->rx.reassocresp++;
953 case WLAN_FSTYPE_PROBEREQ:
954 /* printk("probereq"); */
955 wlandev->rx.probereq++;
957 case WLAN_FSTYPE_PROBERESP:
958 /* printk("proberesp"); */
959 wlandev->rx.proberesp++;
961 case WLAN_FSTYPE_BEACON:
962 /* printk("beacon"); */
963 wlandev->rx.beacon++;
965 case WLAN_FSTYPE_ATIM:
966 /* printk("atim"); */
969 case WLAN_FSTYPE_DISASSOC:
970 /* printk("disassoc"); */
971 wlandev->rx.disassoc++;
973 case WLAN_FSTYPE_AUTHEN:
974 /* printk("authen"); */
975 wlandev->rx.authen++;
977 case WLAN_FSTYPE_DEAUTHEN:
978 /* printk("deauthen"); */
979 wlandev->rx.deauthen++;
982 /* printk("unknown"); */
983 wlandev->rx.mgmt_unknown++;
991 if ((wlandev->netdev->flags & IFF_PROMISC) ||
992 (wlandev->netdev->flags & IFF_ALLMULTI)) {
996 netdev_dbg(wlandev->netdev, "rx'd ctl:\n");
999 case WLAN_FSTYPE_PSPOLL:
1000 /* printk("pspoll"); */
1001 wlandev->rx.pspoll++;
1003 case WLAN_FSTYPE_RTS:
1004 /* printk("rts"); */
1007 case WLAN_FSTYPE_CTS:
1008 /* printk("cts"); */
1011 case WLAN_FSTYPE_ACK:
1012 /* printk("ack"); */
1015 case WLAN_FSTYPE_CFEND:
1016 /* printk("cfend"); */
1017 wlandev->rx.cfend++;
1019 case WLAN_FSTYPE_CFENDCFACK:
1020 /* printk("cfendcfack"); */
1021 wlandev->rx.cfendcfack++;
1024 /* printk("unknown"); */
1025 wlandev->rx.ctl_unknown++;
1032 case WLAN_FTYPE_DATA:
1035 case WLAN_FSTYPE_DATAONLY:
1036 wlandev->rx.dataonly++;
1038 case WLAN_FSTYPE_DATA_CFACK:
1039 wlandev->rx.data_cfack++;
1041 case WLAN_FSTYPE_DATA_CFPOLL:
1042 wlandev->rx.data_cfpoll++;
1044 case WLAN_FSTYPE_DATA_CFACK_CFPOLL:
1045 wlandev->rx.data__cfack_cfpoll++;
1047 case WLAN_FSTYPE_NULL:
1048 netdev_dbg(wlandev->netdev, "rx'd data:null\n");
1051 case WLAN_FSTYPE_CFACK:
1052 netdev_dbg(wlandev->netdev, "rx'd data:cfack\n");
1053 wlandev->rx.cfack++;
1055 case WLAN_FSTYPE_CFPOLL:
1056 netdev_dbg(wlandev->netdev, "rx'd data:cfpoll\n");
1057 wlandev->rx.cfpoll++;
1059 case WLAN_FSTYPE_CFACK_CFPOLL:
1060 netdev_dbg(wlandev->netdev, "rx'd data:cfack_cfpoll\n");
1061 wlandev->rx.cfack_cfpoll++;
1064 /* printk("unknown"); */
1065 wlandev->rx.data_unknown++;
1074 static void p80211knetdev_tx_timeout(struct net_device *netdev, unsigned int txqueue)
1076 struct wlandevice *wlandev = netdev->ml_priv;
1078 if (wlandev->tx_timeout) {
1079 wlandev->tx_timeout(wlandev);
1081 netdev_warn(netdev, "Implement tx_timeout for %s\n",
1083 netif_wake_queue(wlandev->netdev);