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_siocdevprivate(struct net_device *dev, struct ifreq *ifr,
102 void __user *data, int cmd);
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);
464 /*----------------------------------------------------------------
465 * p80211knetdev_siocdevprivate
467 * Handle an ioctl call on one of our devices. Everything Linux
468 * ioctl specific is done here. Then we pass the contents of the
469 * ifr->data to the request message handler.
472 * dev Linux kernel netdevice
473 * ifr Our private ioctl request structure, typed for the
474 * generic struct ifreq so we can use ptr to func
478 * zero on success, a negative errno on failure. Possible values:
479 * -ENETDOWN Device isn't up.
480 * -EBUSY cmd already in progress
481 * -ETIME p80211 cmd timed out (MSD may have its own timers)
482 * -EFAULT memory fault copying msg from user buffer
483 * -ENOMEM unable to allocate kernel msg buffer
484 * -EINVAL bad magic, it the cmd really for us?
485 * -EintR sleeping on cmd, awakened by signal, cmd cancelled.
488 * Process thread (ioctl caller). TODO: SMP support may require
490 *----------------------------------------------------------------
492 static int p80211knetdev_siocdevprivate(struct net_device *dev,
494 void __user *data, int cmd)
497 struct p80211ioctl_req *req = (struct p80211ioctl_req *)ifr;
498 struct wlandevice *wlandev = dev->ml_priv;
501 netdev_dbg(dev, "rx'd ioctl, cmd=%d, len=%d\n", cmd, req->len);
503 if (in_compat_syscall())
506 /* Test the magic, assume ifr is good if it's there */
507 if (req->magic != P80211_IOCTL_MAGIC) {
512 if (cmd == P80211_IFTEST) {
515 } else if (cmd != P80211_IFREQ) {
520 msgbuf = memdup_user(data, req->len);
521 if (IS_ERR(msgbuf)) {
522 result = PTR_ERR(msgbuf);
526 result = p80211req_dorequest(wlandev, msgbuf);
529 if (copy_to_user(data, msgbuf, req->len))
535 /* If allocate,copyfrom or copyto fails, return errno */
539 /*----------------------------------------------------------------
540 * p80211knetdev_set_mac_address
542 * Handles the ioctl for changing the MACAddress of a netdevice
544 * references: linux/netdevice.h and drivers/net/net_init.c
546 * NOTE: [MSM] We only prevent address changes when the netdev is
547 * up. We don't control anything based on dot11 state. If the
548 * address is changed on a STA that's currently associated, you
549 * will probably lose the ability to send and receive data frames.
550 * Just be aware. Therefore, this should usually only be done
551 * prior to scan/join/auth/assoc.
554 * dev netdevice struct
555 * addr the new MACAddress (a struct)
558 * zero on success, a negative errno on failure. Possible values:
559 * -EBUSY device is bussy (cmd not possible)
560 * -and errors returned by: p80211req_dorequest(..)
562 * by: Collin R. Mulliner <collin@mulliner.org>
563 *----------------------------------------------------------------
565 static int p80211knetdev_set_mac_address(struct net_device *dev, void *addr)
567 struct sockaddr *new_addr = addr;
568 struct p80211msg_dot11req_mibset dot11req;
569 struct p80211item_unk392 *mibattr;
570 struct p80211item_pstr6 *macaddr;
571 struct p80211item_uint32 *resultcode;
574 /* If we're running, we don't allow MAC address changes */
575 if (netif_running(dev))
578 /* Set up some convenience pointers. */
579 mibattr = &dot11req.mibattribute;
580 macaddr = (struct p80211item_pstr6 *)&mibattr->data;
581 resultcode = &dot11req.resultcode;
583 /* Set up a dot11req_mibset */
584 memset(&dot11req, 0, sizeof(dot11req));
585 dot11req.msgcode = DIDMSG_DOT11REQ_MIBSET;
586 dot11req.msglen = sizeof(dot11req);
587 memcpy(dot11req.devname,
588 ((struct wlandevice *)dev->ml_priv)->name,
589 WLAN_DEVNAMELEN_MAX - 1);
591 /* Set up the mibattribute argument */
592 mibattr->did = DIDMSG_DOT11REQ_MIBSET_MIBATTRIBUTE;
593 mibattr->status = P80211ENUM_msgitem_status_data_ok;
594 mibattr->len = sizeof(mibattr->data);
596 macaddr->did = DIDMIB_DOT11MAC_OPERATIONTABLE_MACADDRESS;
597 macaddr->status = P80211ENUM_msgitem_status_data_ok;
598 macaddr->len = sizeof(macaddr->data);
599 macaddr->data.len = ETH_ALEN;
600 memcpy(&macaddr->data.data, new_addr->sa_data, ETH_ALEN);
602 /* Set up the resultcode argument */
603 resultcode->did = DIDMSG_DOT11REQ_MIBSET_RESULTCODE;
604 resultcode->status = P80211ENUM_msgitem_status_no_value;
605 resultcode->len = sizeof(resultcode->data);
606 resultcode->data = 0;
608 /* now fire the request */
609 result = p80211req_dorequest(dev->ml_priv, (u8 *)&dot11req);
611 /* If the request wasn't successful, report an error and don't
612 * change the netdev address
614 if (result != 0 || resultcode->data != P80211ENUM_resultcode_success) {
615 netdev_err(dev, "Low-level driver failed dot11req_mibset(dot11MACAddress).\n");
616 result = -EADDRNOTAVAIL;
618 /* everything's ok, change the addr in netdev */
619 memcpy(dev->dev_addr, new_addr->sa_data, dev->addr_len);
625 static const struct net_device_ops p80211_netdev_ops = {
626 .ndo_init = p80211knetdev_init,
627 .ndo_open = p80211knetdev_open,
628 .ndo_stop = p80211knetdev_stop,
629 .ndo_start_xmit = p80211knetdev_hard_start_xmit,
630 .ndo_set_rx_mode = p80211knetdev_set_multicast_list,
631 .ndo_siocdevprivate = p80211knetdev_siocdevprivate,
632 .ndo_set_mac_address = p80211knetdev_set_mac_address,
633 .ndo_tx_timeout = p80211knetdev_tx_timeout,
634 .ndo_validate_addr = eth_validate_addr,
637 /*----------------------------------------------------------------
640 * Roughly matches the functionality of ether_setup. Here
641 * we set up any members of the wlandevice structure that are common
642 * to all devices. Additionally, we allocate a linux 'struct device'
643 * and perform the same setup as ether_setup.
645 * Note: It's important that the caller have setup the wlandev->name
646 * ptr prior to calling this function.
649 * wlandev ptr to the wlandev structure for the
651 * physdev ptr to usb device
653 * zero on success, non-zero otherwise.
655 * Should be process thread. We'll assume it might be
656 * interrupt though. When we add support for statically
657 * compiled drivers, this function will be called in the
658 * context of the kernel startup code.
659 *----------------------------------------------------------------
661 int wlan_setup(struct wlandevice *wlandev, struct device *physdev)
664 struct net_device *netdev;
666 struct wireless_dev *wdev;
668 /* Set up the wlandev */
669 wlandev->state = WLAN_DEVICE_CLOSED;
670 wlandev->ethconv = WLAN_ETHCONV_8021h;
671 wlandev->macmode = WLAN_MACMODE_NONE;
673 /* Set up the rx queue */
674 skb_queue_head_init(&wlandev->nsd_rxq);
675 tasklet_setup(&wlandev->rx_bh, p80211netdev_rx_bh);
677 /* Allocate and initialize the wiphy struct */
678 wiphy = wlan_create_wiphy(physdev, wlandev);
680 dev_err(physdev, "Failed to alloc wiphy.\n");
684 /* Allocate and initialize the struct device */
685 netdev = alloc_netdev(sizeof(struct wireless_dev), "wlan%d",
686 NET_NAME_UNKNOWN, ether_setup);
688 dev_err(physdev, "Failed to alloc netdev.\n");
689 wlan_free_wiphy(wiphy);
692 wlandev->netdev = netdev;
693 netdev->ml_priv = wlandev;
694 netdev->netdev_ops = &p80211_netdev_ops;
695 wdev = netdev_priv(netdev);
697 wdev->iftype = NL80211_IFTYPE_STATION;
698 netdev->ieee80211_ptr = wdev;
699 netdev->min_mtu = 68;
700 /* 2312 is max 802.11 payload, 20 is overhead,
701 * (ether + llc + snap) and another 8 for wep.
703 netdev->max_mtu = (2312 - 20 - 8);
705 netif_stop_queue(netdev);
706 netif_carrier_off(netdev);
712 /*----------------------------------------------------------------
715 * This function is paired with the wlan_setup routine. It should
716 * be called after unregister_wlandev. Basically, all it does is
717 * free the 'struct device' that's associated with the wlandev.
718 * We do it here because the 'struct device' isn't allocated
719 * explicitly in the driver code, it's done in wlan_setup. To
720 * do the free in the driver might seem like 'magic'.
723 * wlandev ptr to the wlandev structure for the
726 * Should be process thread. We'll assume it might be
727 * interrupt though. When we add support for statically
728 * compiled drivers, this function will be called in the
729 * context of the kernel startup code.
730 *----------------------------------------------------------------
732 void wlan_unsetup(struct wlandevice *wlandev)
734 struct wireless_dev *wdev;
736 tasklet_kill(&wlandev->rx_bh);
738 if (wlandev->netdev) {
739 wdev = netdev_priv(wlandev->netdev);
741 wlan_free_wiphy(wdev->wiphy);
742 free_netdev(wlandev->netdev);
743 wlandev->netdev = NULL;
747 /*----------------------------------------------------------------
750 * Roughly matches the functionality of register_netdev. This function
751 * is called after the driver has successfully probed and set up the
752 * resources for the device. It's now ready to become a named device
753 * in the Linux system.
755 * First we allocate a name for the device (if not already set), then
756 * we call the Linux function register_netdevice.
759 * wlandev ptr to the wlandev structure for the
762 * zero on success, non-zero otherwise.
764 * Can be either interrupt or not.
765 *----------------------------------------------------------------
767 int register_wlandev(struct wlandevice *wlandev)
769 return register_netdev(wlandev->netdev);
772 /*----------------------------------------------------------------
775 * Roughly matches the functionality of unregister_netdev. This
776 * function is called to remove a named device from the system.
778 * First we tell linux that the device should no longer exist.
779 * Then we remove it from the list of known wlan devices.
782 * wlandev ptr to the wlandev structure for the
785 * zero on success, non-zero otherwise.
787 * Can be either interrupt or not.
788 *----------------------------------------------------------------
790 int unregister_wlandev(struct wlandevice *wlandev)
794 unregister_netdev(wlandev->netdev);
796 /* Now to clean out the rx queue */
797 while ((skb = skb_dequeue(&wlandev->nsd_rxq)))
803 /*----------------------------------------------------------------
804 * p80211netdev_hwremoved
806 * Hardware removed notification. This function should be called
807 * immediately after an MSD has detected that the underlying hardware
808 * has been yanked out from under us. The primary things we need
811 * - Prevent any further traffic from the knetdev i/f
812 * - Prevent any further requests from mgmt i/f
813 * - If there are any waitq'd mgmt requests or mgmt-frame exchanges,
815 * - Call the MSD hwremoved function.
817 * The remainder of the cleanup will be handled by unregister().
818 * Our primary goal here is to prevent as much tickling of the MSD
819 * as possible since the MSD is already in a 'wounded' state.
821 * TODO: As new features are added, this function should be
825 * wlandev WLAN network device structure
832 *----------------------------------------------------------------
834 void p80211netdev_hwremoved(struct wlandevice *wlandev)
836 wlandev->hwremoved = 1;
837 if (wlandev->state == WLAN_DEVICE_OPEN)
838 netif_stop_queue(wlandev->netdev);
840 netif_device_detach(wlandev->netdev);
843 /*----------------------------------------------------------------
846 * Classifies the frame, increments the appropriate counter, and
847 * returns 0|1|2 indicating whether the driver should handle, ignore, or
851 * wlandev wlan device structure
852 * fc frame control field
855 * zero if the frame should be handled by the driver,
856 * one if the frame should be ignored
857 * anything else means we drop it.
863 *----------------------------------------------------------------
865 static int p80211_rx_typedrop(struct wlandevice *wlandev, u16 fc)
870 /* Classify frame, increment counter */
871 ftype = WLAN_GET_FC_FTYPE(fc);
872 fstype = WLAN_GET_FC_FSTYPE(fc);
874 case WLAN_FTYPE_MGMT:
875 if ((wlandev->netdev->flags & IFF_PROMISC) ||
876 (wlandev->netdev->flags & IFF_ALLMULTI)) {
880 netdev_dbg(wlandev->netdev, "rx'd mgmt:\n");
883 case WLAN_FSTYPE_ASSOCREQ:
884 /* printk("assocreq"); */
885 wlandev->rx.assocreq++;
887 case WLAN_FSTYPE_ASSOCRESP:
888 /* printk("assocresp"); */
889 wlandev->rx.assocresp++;
891 case WLAN_FSTYPE_REASSOCREQ:
892 /* printk("reassocreq"); */
893 wlandev->rx.reassocreq++;
895 case WLAN_FSTYPE_REASSOCRESP:
896 /* printk("reassocresp"); */
897 wlandev->rx.reassocresp++;
899 case WLAN_FSTYPE_PROBEREQ:
900 /* printk("probereq"); */
901 wlandev->rx.probereq++;
903 case WLAN_FSTYPE_PROBERESP:
904 /* printk("proberesp"); */
905 wlandev->rx.proberesp++;
907 case WLAN_FSTYPE_BEACON:
908 /* printk("beacon"); */
909 wlandev->rx.beacon++;
911 case WLAN_FSTYPE_ATIM:
912 /* printk("atim"); */
915 case WLAN_FSTYPE_DISASSOC:
916 /* printk("disassoc"); */
917 wlandev->rx.disassoc++;
919 case WLAN_FSTYPE_AUTHEN:
920 /* printk("authen"); */
921 wlandev->rx.authen++;
923 case WLAN_FSTYPE_DEAUTHEN:
924 /* printk("deauthen"); */
925 wlandev->rx.deauthen++;
928 /* printk("unknown"); */
929 wlandev->rx.mgmt_unknown++;
937 if ((wlandev->netdev->flags & IFF_PROMISC) ||
938 (wlandev->netdev->flags & IFF_ALLMULTI)) {
942 netdev_dbg(wlandev->netdev, "rx'd ctl:\n");
945 case WLAN_FSTYPE_PSPOLL:
946 /* printk("pspoll"); */
947 wlandev->rx.pspoll++;
949 case WLAN_FSTYPE_RTS:
953 case WLAN_FSTYPE_CTS:
957 case WLAN_FSTYPE_ACK:
961 case WLAN_FSTYPE_CFEND:
962 /* printk("cfend"); */
965 case WLAN_FSTYPE_CFENDCFACK:
966 /* printk("cfendcfack"); */
967 wlandev->rx.cfendcfack++;
970 /* printk("unknown"); */
971 wlandev->rx.ctl_unknown++;
978 case WLAN_FTYPE_DATA:
981 case WLAN_FSTYPE_DATAONLY:
982 wlandev->rx.dataonly++;
984 case WLAN_FSTYPE_DATA_CFACK:
985 wlandev->rx.data_cfack++;
987 case WLAN_FSTYPE_DATA_CFPOLL:
988 wlandev->rx.data_cfpoll++;
990 case WLAN_FSTYPE_DATA_CFACK_CFPOLL:
991 wlandev->rx.data__cfack_cfpoll++;
993 case WLAN_FSTYPE_NULL:
994 netdev_dbg(wlandev->netdev, "rx'd data:null\n");
997 case WLAN_FSTYPE_CFACK:
998 netdev_dbg(wlandev->netdev, "rx'd data:cfack\n");
1001 case WLAN_FSTYPE_CFPOLL:
1002 netdev_dbg(wlandev->netdev, "rx'd data:cfpoll\n");
1003 wlandev->rx.cfpoll++;
1005 case WLAN_FSTYPE_CFACK_CFPOLL:
1006 netdev_dbg(wlandev->netdev, "rx'd data:cfack_cfpoll\n");
1007 wlandev->rx.cfack_cfpoll++;
1010 /* printk("unknown"); */
1011 wlandev->rx.data_unknown++;
1020 static void p80211knetdev_tx_timeout(struct net_device *netdev, unsigned int txqueue)
1022 struct wlandevice *wlandev = netdev->ml_priv;
1024 if (wlandev->tx_timeout) {
1025 wlandev->tx_timeout(wlandev);
1027 netdev_warn(netdev, "Implement tx_timeout for %s\n",
1029 netif_wake_queue(wlandev->netdev);