mirror of https://gitee.com/openkylin/linux.git
2374 lines
62 KiB
C
2374 lines
62 KiB
C
/* main.c - (formerly known as dldwd_cs.c, orinoco_cs.c and orinoco.c)
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*
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* A driver for Hermes or Prism 2 chipset based PCMCIA wireless
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* adaptors, with Lucent/Agere, Intersil or Symbol firmware.
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*
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* Current maintainers (as of 29 September 2003) are:
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* Pavel Roskin <proski AT gnu.org>
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* and David Gibson <hermes AT gibson.dropbear.id.au>
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*
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* (C) Copyright David Gibson, IBM Corporation 2001-2003.
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* Copyright (C) 2000 David Gibson, Linuxcare Australia.
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* With some help from :
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* Copyright (C) 2001 Jean Tourrilhes, HP Labs
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* Copyright (C) 2001 Benjamin Herrenschmidt
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*
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* Based on dummy_cs.c 1.27 2000/06/12 21:27:25
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*
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* Portions based on wvlan_cs.c 1.0.6, Copyright Andreas Neuhaus <andy
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* AT fasta.fh-dortmund.de>
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* http://www.stud.fh-dortmund.de/~andy/wvlan/
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License
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* at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and
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* limitations under the License.
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*
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* The initial developer of the original code is David A. Hinds
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* <dahinds AT users.sourceforge.net>. Portions created by David
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* A. Hinds are Copyright (C) 1999 David A. Hinds. All Rights
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* Reserved.
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*
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* Alternatively, the contents of this file may be used under the
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* terms of the GNU General Public License version 2 (the "GPL"), in
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* which case the provisions of the GPL are applicable instead of the
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* above. If you wish to allow the use of your version of this file
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* only under the terms of the GPL and not to allow others to use your
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* version of this file under the MPL, indicate your decision by
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* deleting the provisions above and replace them with the notice and
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* other provisions required by the GPL. If you do not delete the
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* provisions above, a recipient may use your version of this file
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* under either the MPL or the GPL. */
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/*
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* TODO
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* o Handle de-encapsulation within network layer, provide 802.11
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* headers (patch from Thomas 'Dent' Mirlacher)
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* o Fix possible races in SPY handling.
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* o Disconnect wireless extensions from fundamental configuration.
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* o (maybe) Software WEP support (patch from Stano Meduna).
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* o (maybe) Use multiple Tx buffers - driver handling queue
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* rather than firmware.
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*/
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/* Locking and synchronization:
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*
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* The basic principle is that everything is serialized through a
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* single spinlock, priv->lock. The lock is used in user, bh and irq
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* context, so when taken outside hardirq context it should always be
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* taken with interrupts disabled. The lock protects both the
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* hardware and the struct orinoco_private.
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*
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* Another flag, priv->hw_unavailable indicates that the hardware is
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* unavailable for an extended period of time (e.g. suspended, or in
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* the middle of a hard reset). This flag is protected by the
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* spinlock. All code which touches the hardware should check the
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* flag after taking the lock, and if it is set, give up on whatever
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* they are doing and drop the lock again. The orinoco_lock()
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* function handles this (it unlocks and returns -EBUSY if
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* hw_unavailable is non-zero).
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*/
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#define DRIVER_NAME "orinoco"
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/device.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/suspend.h>
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#include <linux/if_arp.h>
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#include <linux/wireless.h>
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#include <linux/ieee80211.h>
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#include <net/iw_handler.h>
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#include <net/cfg80211.h>
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#include "hermes_rid.h"
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#include "hermes_dld.h"
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#include "hw.h"
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#include "scan.h"
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#include "mic.h"
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#include "fw.h"
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#include "wext.h"
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#include "cfg.h"
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#include "main.h"
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#include "orinoco.h"
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/********************************************************************/
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/* Module information */
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/********************************************************************/
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MODULE_AUTHOR("Pavel Roskin <proski@gnu.org> & "
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"David Gibson <hermes@gibson.dropbear.id.au>");
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MODULE_DESCRIPTION("Driver for Lucent Orinoco, Prism II based "
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"and similar wireless cards");
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MODULE_LICENSE("Dual MPL/GPL");
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/* Level of debugging. Used in the macros in orinoco.h */
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#ifdef ORINOCO_DEBUG
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int orinoco_debug = ORINOCO_DEBUG;
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EXPORT_SYMBOL(orinoco_debug);
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module_param(orinoco_debug, int, 0644);
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MODULE_PARM_DESC(orinoco_debug, "Debug level");
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#endif
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static int suppress_linkstatus; /* = 0 */
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module_param(suppress_linkstatus, bool, 0644);
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MODULE_PARM_DESC(suppress_linkstatus, "Don't log link status changes");
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static int ignore_disconnect; /* = 0 */
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module_param(ignore_disconnect, int, 0644);
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MODULE_PARM_DESC(ignore_disconnect,
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"Don't report lost link to the network layer");
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int force_monitor; /* = 0 */
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module_param(force_monitor, int, 0644);
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MODULE_PARM_DESC(force_monitor, "Allow monitor mode for all firmware versions");
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/********************************************************************/
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/* Internal constants */
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/********************************************************************/
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/* 802.2 LLC/SNAP header used for Ethernet encapsulation over 802.11 */
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static const u8 encaps_hdr[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
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#define ENCAPS_OVERHEAD (sizeof(encaps_hdr) + 2)
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#define ORINOCO_MIN_MTU 256
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#define ORINOCO_MAX_MTU (IEEE80211_MAX_DATA_LEN - ENCAPS_OVERHEAD)
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#define MAX_IRQLOOPS_PER_IRQ 10
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#define MAX_IRQLOOPS_PER_JIFFY (20000/HZ) /* Based on a guestimate of
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* how many events the
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* device could
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* legitimately generate */
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#define DUMMY_FID 0xFFFF
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/*#define MAX_MULTICAST(priv) (priv->firmware_type == FIRMWARE_TYPE_AGERE ? \
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HERMES_MAX_MULTICAST : 0)*/
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#define MAX_MULTICAST(priv) (HERMES_MAX_MULTICAST)
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#define ORINOCO_INTEN (HERMES_EV_RX | HERMES_EV_ALLOC \
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| HERMES_EV_TX | HERMES_EV_TXEXC \
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| HERMES_EV_WTERR | HERMES_EV_INFO \
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| HERMES_EV_INFDROP)
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/********************************************************************/
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/* Data types */
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/********************************************************************/
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/* Beginning of the Tx descriptor, used in TxExc handling */
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struct hermes_txexc_data {
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struct hermes_tx_descriptor desc;
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__le16 frame_ctl;
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__le16 duration_id;
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u8 addr1[ETH_ALEN];
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} __attribute__ ((packed));
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/* Rx frame header except compatibility 802.3 header */
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struct hermes_rx_descriptor {
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/* Control */
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__le16 status;
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__le32 time;
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u8 silence;
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u8 signal;
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u8 rate;
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u8 rxflow;
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__le32 reserved;
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/* 802.11 header */
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__le16 frame_ctl;
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__le16 duration_id;
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u8 addr1[ETH_ALEN];
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u8 addr2[ETH_ALEN];
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u8 addr3[ETH_ALEN];
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__le16 seq_ctl;
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u8 addr4[ETH_ALEN];
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/* Data length */
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__le16 data_len;
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} __attribute__ ((packed));
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struct orinoco_rx_data {
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struct hermes_rx_descriptor *desc;
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struct sk_buff *skb;
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struct list_head list;
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};
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struct orinoco_scan_data {
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void *buf;
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size_t len;
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int type;
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struct list_head list;
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};
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/********************************************************************/
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/* Function prototypes */
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/********************************************************************/
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static int __orinoco_set_multicast_list(struct net_device *dev);
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static int __orinoco_up(struct orinoco_private *priv);
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static int __orinoco_down(struct orinoco_private *priv);
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static int __orinoco_commit(struct orinoco_private *priv);
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/********************************************************************/
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/* Internal helper functions */
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/********************************************************************/
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void set_port_type(struct orinoco_private *priv)
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{
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switch (priv->iw_mode) {
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case NL80211_IFTYPE_STATION:
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priv->port_type = 1;
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priv->createibss = 0;
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break;
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case NL80211_IFTYPE_ADHOC:
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if (priv->prefer_port3) {
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priv->port_type = 3;
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priv->createibss = 0;
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} else {
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priv->port_type = priv->ibss_port;
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priv->createibss = 1;
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}
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break;
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case NL80211_IFTYPE_MONITOR:
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priv->port_type = 3;
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priv->createibss = 0;
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break;
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default:
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printk(KERN_ERR "%s: Invalid priv->iw_mode in set_port_type()\n",
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priv->ndev->name);
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}
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}
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/********************************************************************/
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/* Device methods */
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/********************************************************************/
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static int orinoco_open(struct net_device *dev)
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{
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struct orinoco_private *priv = ndev_priv(dev);
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unsigned long flags;
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int err;
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if (orinoco_lock(priv, &flags) != 0)
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return -EBUSY;
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err = __orinoco_up(priv);
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if (!err)
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priv->open = 1;
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orinoco_unlock(priv, &flags);
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return err;
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}
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static int orinoco_stop(struct net_device *dev)
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{
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struct orinoco_private *priv = ndev_priv(dev);
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int err = 0;
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/* We mustn't use orinoco_lock() here, because we need to be
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able to close the interface even if hw_unavailable is set
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(e.g. as we're released after a PC Card removal) */
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spin_lock_irq(&priv->lock);
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priv->open = 0;
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err = __orinoco_down(priv);
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spin_unlock_irq(&priv->lock);
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return err;
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}
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static struct net_device_stats *orinoco_get_stats(struct net_device *dev)
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{
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struct orinoco_private *priv = ndev_priv(dev);
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return &priv->stats;
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}
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static void orinoco_set_multicast_list(struct net_device *dev)
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{
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struct orinoco_private *priv = ndev_priv(dev);
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unsigned long flags;
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if (orinoco_lock(priv, &flags) != 0) {
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printk(KERN_DEBUG "%s: orinoco_set_multicast_list() "
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"called when hw_unavailable\n", dev->name);
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return;
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}
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__orinoco_set_multicast_list(dev);
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orinoco_unlock(priv, &flags);
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}
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static int orinoco_change_mtu(struct net_device *dev, int new_mtu)
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{
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struct orinoco_private *priv = ndev_priv(dev);
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if ((new_mtu < ORINOCO_MIN_MTU) || (new_mtu > ORINOCO_MAX_MTU))
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return -EINVAL;
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/* MTU + encapsulation + header length */
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if ((new_mtu + ENCAPS_OVERHEAD + sizeof(struct ieee80211_hdr)) >
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(priv->nicbuf_size - ETH_HLEN))
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return -EINVAL;
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dev->mtu = new_mtu;
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return 0;
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}
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/********************************************************************/
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/* Tx path */
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/********************************************************************/
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static netdev_tx_t orinoco_xmit(struct sk_buff *skb, struct net_device *dev)
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{
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struct orinoco_private *priv = ndev_priv(dev);
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struct net_device_stats *stats = &priv->stats;
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struct orinoco_tkip_key *key;
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hermes_t *hw = &priv->hw;
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int err = 0;
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u16 txfid = priv->txfid;
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struct ethhdr *eh;
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int tx_control;
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unsigned long flags;
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int do_mic;
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if (!netif_running(dev)) {
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printk(KERN_ERR "%s: Tx on stopped device!\n",
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dev->name);
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return NETDEV_TX_BUSY;
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}
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if (netif_queue_stopped(dev)) {
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printk(KERN_DEBUG "%s: Tx while transmitter busy!\n",
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dev->name);
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return NETDEV_TX_BUSY;
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}
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if (orinoco_lock(priv, &flags) != 0) {
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printk(KERN_ERR "%s: orinoco_xmit() called while hw_unavailable\n",
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dev->name);
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return NETDEV_TX_BUSY;
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}
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if (!netif_carrier_ok(dev) ||
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(priv->iw_mode == NL80211_IFTYPE_MONITOR)) {
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/* Oops, the firmware hasn't established a connection,
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silently drop the packet (this seems to be the
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safest approach). */
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goto drop;
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}
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/* Check packet length */
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if (skb->len < ETH_HLEN)
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goto drop;
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key = (struct orinoco_tkip_key *) priv->keys[priv->tx_key].key;
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do_mic = ((priv->encode_alg == ORINOCO_ALG_TKIP) &&
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(key != NULL));
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tx_control = HERMES_TXCTRL_TX_OK | HERMES_TXCTRL_TX_EX;
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if (do_mic)
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tx_control |= (priv->tx_key << HERMES_MIC_KEY_ID_SHIFT) |
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HERMES_TXCTRL_MIC;
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if (priv->has_alt_txcntl) {
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/* WPA enabled firmwares have tx_cntl at the end of
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* the 802.11 header. So write zeroed descriptor and
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* 802.11 header at the same time
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*/
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char desc[HERMES_802_3_OFFSET];
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__le16 *txcntl = (__le16 *) &desc[HERMES_TXCNTL2_OFFSET];
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memset(&desc, 0, sizeof(desc));
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*txcntl = cpu_to_le16(tx_control);
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err = hermes_bap_pwrite(hw, USER_BAP, &desc, sizeof(desc),
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txfid, 0);
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if (err) {
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if (net_ratelimit())
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printk(KERN_ERR "%s: Error %d writing Tx "
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"descriptor to BAP\n", dev->name, err);
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goto busy;
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}
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} else {
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struct hermes_tx_descriptor desc;
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memset(&desc, 0, sizeof(desc));
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desc.tx_control = cpu_to_le16(tx_control);
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err = hermes_bap_pwrite(hw, USER_BAP, &desc, sizeof(desc),
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txfid, 0);
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if (err) {
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if (net_ratelimit())
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printk(KERN_ERR "%s: Error %d writing Tx "
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"descriptor to BAP\n", dev->name, err);
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goto busy;
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}
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/* Clear the 802.11 header and data length fields - some
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* firmwares (e.g. Lucent/Agere 8.xx) appear to get confused
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* if this isn't done. */
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hermes_clear_words(hw, HERMES_DATA0,
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HERMES_802_3_OFFSET - HERMES_802_11_OFFSET);
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}
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eh = (struct ethhdr *)skb->data;
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|
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/* Encapsulate Ethernet-II frames */
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if (ntohs(eh->h_proto) > ETH_DATA_LEN) { /* Ethernet-II frame */
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struct header_struct {
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struct ethhdr eth; /* 802.3 header */
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u8 encap[6]; /* 802.2 header */
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} __attribute__ ((packed)) hdr;
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|
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/* Strip destination and source from the data */
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skb_pull(skb, 2 * ETH_ALEN);
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/* And move them to a separate header */
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memcpy(&hdr.eth, eh, 2 * ETH_ALEN);
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hdr.eth.h_proto = htons(sizeof(encaps_hdr) + skb->len);
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memcpy(hdr.encap, encaps_hdr, sizeof(encaps_hdr));
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/* Insert the SNAP header */
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if (skb_headroom(skb) < sizeof(hdr)) {
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printk(KERN_ERR
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"%s: Not enough headroom for 802.2 headers %d\n",
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dev->name, skb_headroom(skb));
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goto drop;
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}
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eh = (struct ethhdr *) skb_push(skb, sizeof(hdr));
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memcpy(eh, &hdr, sizeof(hdr));
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}
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err = hermes_bap_pwrite(hw, USER_BAP, skb->data, skb->len,
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txfid, HERMES_802_3_OFFSET);
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if (err) {
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printk(KERN_ERR "%s: Error %d writing packet to BAP\n",
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dev->name, err);
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goto busy;
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}
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|
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/* Calculate Michael MIC */
|
|
if (do_mic) {
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u8 mic_buf[MICHAEL_MIC_LEN + 1];
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u8 *mic;
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size_t offset;
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size_t len;
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if (skb->len % 2) {
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/* MIC start is on an odd boundary */
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mic_buf[0] = skb->data[skb->len - 1];
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mic = &mic_buf[1];
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offset = skb->len - 1;
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len = MICHAEL_MIC_LEN + 1;
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} else {
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mic = &mic_buf[0];
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offset = skb->len;
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len = MICHAEL_MIC_LEN;
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}
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orinoco_mic(priv->tx_tfm_mic, key->tx_mic,
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eh->h_dest, eh->h_source, 0 /* priority */,
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skb->data + ETH_HLEN, skb->len - ETH_HLEN, mic);
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|
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/* Write the MIC */
|
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err = hermes_bap_pwrite(hw, USER_BAP, &mic_buf[0], len,
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txfid, HERMES_802_3_OFFSET + offset);
|
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if (err) {
|
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printk(KERN_ERR "%s: Error %d writing MIC to BAP\n",
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dev->name, err);
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goto busy;
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}
|
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}
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|
|
/* Finally, we actually initiate the send */
|
|
netif_stop_queue(dev);
|
|
|
|
err = hermes_docmd_wait(hw, HERMES_CMD_TX | HERMES_CMD_RECL,
|
|
txfid, NULL);
|
|
if (err) {
|
|
netif_start_queue(dev);
|
|
if (net_ratelimit())
|
|
printk(KERN_ERR "%s: Error %d transmitting packet\n",
|
|
dev->name, err);
|
|
goto busy;
|
|
}
|
|
|
|
dev->trans_start = jiffies;
|
|
stats->tx_bytes += HERMES_802_3_OFFSET + skb->len;
|
|
goto ok;
|
|
|
|
drop:
|
|
stats->tx_errors++;
|
|
stats->tx_dropped++;
|
|
|
|
ok:
|
|
orinoco_unlock(priv, &flags);
|
|
dev_kfree_skb(skb);
|
|
return NETDEV_TX_OK;
|
|
|
|
busy:
|
|
if (err == -EIO)
|
|
schedule_work(&priv->reset_work);
|
|
orinoco_unlock(priv, &flags);
|
|
return NETDEV_TX_BUSY;
|
|
}
|
|
|
|
static void __orinoco_ev_alloc(struct net_device *dev, hermes_t *hw)
|
|
{
|
|
struct orinoco_private *priv = ndev_priv(dev);
|
|
u16 fid = hermes_read_regn(hw, ALLOCFID);
|
|
|
|
if (fid != priv->txfid) {
|
|
if (fid != DUMMY_FID)
|
|
printk(KERN_WARNING "%s: Allocate event on unexpected fid (%04X)\n",
|
|
dev->name, fid);
|
|
return;
|
|
}
|
|
|
|
hermes_write_regn(hw, ALLOCFID, DUMMY_FID);
|
|
}
|
|
|
|
static void __orinoco_ev_tx(struct net_device *dev, hermes_t *hw)
|
|
{
|
|
struct orinoco_private *priv = ndev_priv(dev);
|
|
struct net_device_stats *stats = &priv->stats;
|
|
|
|
stats->tx_packets++;
|
|
|
|
netif_wake_queue(dev);
|
|
|
|
hermes_write_regn(hw, TXCOMPLFID, DUMMY_FID);
|
|
}
|
|
|
|
static void __orinoco_ev_txexc(struct net_device *dev, hermes_t *hw)
|
|
{
|
|
struct orinoco_private *priv = ndev_priv(dev);
|
|
struct net_device_stats *stats = &priv->stats;
|
|
u16 fid = hermes_read_regn(hw, TXCOMPLFID);
|
|
u16 status;
|
|
struct hermes_txexc_data hdr;
|
|
int err = 0;
|
|
|
|
if (fid == DUMMY_FID)
|
|
return; /* Nothing's really happened */
|
|
|
|
/* Read part of the frame header - we need status and addr1 */
|
|
err = hermes_bap_pread(hw, IRQ_BAP, &hdr,
|
|
sizeof(struct hermes_txexc_data),
|
|
fid, 0);
|
|
|
|
hermes_write_regn(hw, TXCOMPLFID, DUMMY_FID);
|
|
stats->tx_errors++;
|
|
|
|
if (err) {
|
|
printk(KERN_WARNING "%s: Unable to read descriptor on Tx error "
|
|
"(FID=%04X error %d)\n",
|
|
dev->name, fid, err);
|
|
return;
|
|
}
|
|
|
|
DEBUG(1, "%s: Tx error, err %d (FID=%04X)\n", dev->name,
|
|
err, fid);
|
|
|
|
/* We produce a TXDROP event only for retry or lifetime
|
|
* exceeded, because that's the only status that really mean
|
|
* that this particular node went away.
|
|
* Other errors means that *we* screwed up. - Jean II */
|
|
status = le16_to_cpu(hdr.desc.status);
|
|
if (status & (HERMES_TXSTAT_RETRYERR | HERMES_TXSTAT_AGEDERR)) {
|
|
union iwreq_data wrqu;
|
|
|
|
/* Copy 802.11 dest address.
|
|
* We use the 802.11 header because the frame may
|
|
* not be 802.3 or may be mangled...
|
|
* In Ad-Hoc mode, it will be the node address.
|
|
* In managed mode, it will be most likely the AP addr
|
|
* User space will figure out how to convert it to
|
|
* whatever it needs (IP address or else).
|
|
* - Jean II */
|
|
memcpy(wrqu.addr.sa_data, hdr.addr1, ETH_ALEN);
|
|
wrqu.addr.sa_family = ARPHRD_ETHER;
|
|
|
|
/* Send event to user space */
|
|
wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL);
|
|
}
|
|
|
|
netif_wake_queue(dev);
|
|
}
|
|
|
|
static void orinoco_tx_timeout(struct net_device *dev)
|
|
{
|
|
struct orinoco_private *priv = ndev_priv(dev);
|
|
struct net_device_stats *stats = &priv->stats;
|
|
struct hermes *hw = &priv->hw;
|
|
|
|
printk(KERN_WARNING "%s: Tx timeout! "
|
|
"ALLOCFID=%04x, TXCOMPLFID=%04x, EVSTAT=%04x\n",
|
|
dev->name, hermes_read_regn(hw, ALLOCFID),
|
|
hermes_read_regn(hw, TXCOMPLFID), hermes_read_regn(hw, EVSTAT));
|
|
|
|
stats->tx_errors++;
|
|
|
|
schedule_work(&priv->reset_work);
|
|
}
|
|
|
|
/********************************************************************/
|
|
/* Rx path (data frames) */
|
|
/********************************************************************/
|
|
|
|
/* Does the frame have a SNAP header indicating it should be
|
|
* de-encapsulated to Ethernet-II? */
|
|
static inline int is_ethersnap(void *_hdr)
|
|
{
|
|
u8 *hdr = _hdr;
|
|
|
|
/* We de-encapsulate all packets which, a) have SNAP headers
|
|
* (i.e. SSAP=DSAP=0xaa and CTRL=0x3 in the 802.2 LLC header
|
|
* and where b) the OUI of the SNAP header is 00:00:00 or
|
|
* 00:00:f8 - we need both because different APs appear to use
|
|
* different OUIs for some reason */
|
|
return (memcmp(hdr, &encaps_hdr, 5) == 0)
|
|
&& ((hdr[5] == 0x00) || (hdr[5] == 0xf8));
|
|
}
|
|
|
|
static inline void orinoco_spy_gather(struct net_device *dev, u_char *mac,
|
|
int level, int noise)
|
|
{
|
|
struct iw_quality wstats;
|
|
wstats.level = level - 0x95;
|
|
wstats.noise = noise - 0x95;
|
|
wstats.qual = (level > noise) ? (level - noise) : 0;
|
|
wstats.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
|
|
/* Update spy records */
|
|
wireless_spy_update(dev, mac, &wstats);
|
|
}
|
|
|
|
static void orinoco_stat_gather(struct net_device *dev,
|
|
struct sk_buff *skb,
|
|
struct hermes_rx_descriptor *desc)
|
|
{
|
|
struct orinoco_private *priv = ndev_priv(dev);
|
|
|
|
/* Using spy support with lots of Rx packets, like in an
|
|
* infrastructure (AP), will really slow down everything, because
|
|
* the MAC address must be compared to each entry of the spy list.
|
|
* If the user really asks for it (set some address in the
|
|
* spy list), we do it, but he will pay the price.
|
|
* Note that to get here, you need both WIRELESS_SPY
|
|
* compiled in AND some addresses in the list !!!
|
|
*/
|
|
/* Note : gcc will optimise the whole section away if
|
|
* WIRELESS_SPY is not defined... - Jean II */
|
|
if (SPY_NUMBER(priv)) {
|
|
orinoco_spy_gather(dev, skb_mac_header(skb) + ETH_ALEN,
|
|
desc->signal, desc->silence);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* orinoco_rx_monitor - handle received monitor frames.
|
|
*
|
|
* Arguments:
|
|
* dev network device
|
|
* rxfid received FID
|
|
* desc rx descriptor of the frame
|
|
*
|
|
* Call context: interrupt
|
|
*/
|
|
static void orinoco_rx_monitor(struct net_device *dev, u16 rxfid,
|
|
struct hermes_rx_descriptor *desc)
|
|
{
|
|
u32 hdrlen = 30; /* return full header by default */
|
|
u32 datalen = 0;
|
|
u16 fc;
|
|
int err;
|
|
int len;
|
|
struct sk_buff *skb;
|
|
struct orinoco_private *priv = ndev_priv(dev);
|
|
struct net_device_stats *stats = &priv->stats;
|
|
hermes_t *hw = &priv->hw;
|
|
|
|
len = le16_to_cpu(desc->data_len);
|
|
|
|
/* Determine the size of the header and the data */
|
|
fc = le16_to_cpu(desc->frame_ctl);
|
|
switch (fc & IEEE80211_FCTL_FTYPE) {
|
|
case IEEE80211_FTYPE_DATA:
|
|
if ((fc & IEEE80211_FCTL_TODS)
|
|
&& (fc & IEEE80211_FCTL_FROMDS))
|
|
hdrlen = 30;
|
|
else
|
|
hdrlen = 24;
|
|
datalen = len;
|
|
break;
|
|
case IEEE80211_FTYPE_MGMT:
|
|
hdrlen = 24;
|
|
datalen = len;
|
|
break;
|
|
case IEEE80211_FTYPE_CTL:
|
|
switch (fc & IEEE80211_FCTL_STYPE) {
|
|
case IEEE80211_STYPE_PSPOLL:
|
|
case IEEE80211_STYPE_RTS:
|
|
case IEEE80211_STYPE_CFEND:
|
|
case IEEE80211_STYPE_CFENDACK:
|
|
hdrlen = 16;
|
|
break;
|
|
case IEEE80211_STYPE_CTS:
|
|
case IEEE80211_STYPE_ACK:
|
|
hdrlen = 10;
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
/* Unknown frame type */
|
|
break;
|
|
}
|
|
|
|
/* sanity check the length */
|
|
if (datalen > IEEE80211_MAX_DATA_LEN + 12) {
|
|
printk(KERN_DEBUG "%s: oversized monitor frame, "
|
|
"data length = %d\n", dev->name, datalen);
|
|
stats->rx_length_errors++;
|
|
goto update_stats;
|
|
}
|
|
|
|
skb = dev_alloc_skb(hdrlen + datalen);
|
|
if (!skb) {
|
|
printk(KERN_WARNING "%s: Cannot allocate skb for monitor frame\n",
|
|
dev->name);
|
|
goto update_stats;
|
|
}
|
|
|
|
/* Copy the 802.11 header to the skb */
|
|
memcpy(skb_put(skb, hdrlen), &(desc->frame_ctl), hdrlen);
|
|
skb_reset_mac_header(skb);
|
|
|
|
/* If any, copy the data from the card to the skb */
|
|
if (datalen > 0) {
|
|
err = hermes_bap_pread(hw, IRQ_BAP, skb_put(skb, datalen),
|
|
ALIGN(datalen, 2), rxfid,
|
|
HERMES_802_2_OFFSET);
|
|
if (err) {
|
|
printk(KERN_ERR "%s: error %d reading monitor frame\n",
|
|
dev->name, err);
|
|
goto drop;
|
|
}
|
|
}
|
|
|
|
skb->dev = dev;
|
|
skb->ip_summed = CHECKSUM_NONE;
|
|
skb->pkt_type = PACKET_OTHERHOST;
|
|
skb->protocol = cpu_to_be16(ETH_P_802_2);
|
|
|
|
stats->rx_packets++;
|
|
stats->rx_bytes += skb->len;
|
|
|
|
netif_rx(skb);
|
|
return;
|
|
|
|
drop:
|
|
dev_kfree_skb_irq(skb);
|
|
update_stats:
|
|
stats->rx_errors++;
|
|
stats->rx_dropped++;
|
|
}
|
|
|
|
static void __orinoco_ev_rx(struct net_device *dev, hermes_t *hw)
|
|
{
|
|
struct orinoco_private *priv = ndev_priv(dev);
|
|
struct net_device_stats *stats = &priv->stats;
|
|
struct iw_statistics *wstats = &priv->wstats;
|
|
struct sk_buff *skb = NULL;
|
|
u16 rxfid, status;
|
|
int length;
|
|
struct hermes_rx_descriptor *desc;
|
|
struct orinoco_rx_data *rx_data;
|
|
int err;
|
|
|
|
desc = kmalloc(sizeof(*desc), GFP_ATOMIC);
|
|
if (!desc) {
|
|
printk(KERN_WARNING
|
|
"%s: Can't allocate space for RX descriptor\n",
|
|
dev->name);
|
|
goto update_stats;
|
|
}
|
|
|
|
rxfid = hermes_read_regn(hw, RXFID);
|
|
|
|
err = hermes_bap_pread(hw, IRQ_BAP, desc, sizeof(*desc),
|
|
rxfid, 0);
|
|
if (err) {
|
|
printk(KERN_ERR "%s: error %d reading Rx descriptor. "
|
|
"Frame dropped.\n", dev->name, err);
|
|
goto update_stats;
|
|
}
|
|
|
|
status = le16_to_cpu(desc->status);
|
|
|
|
if (status & HERMES_RXSTAT_BADCRC) {
|
|
DEBUG(1, "%s: Bad CRC on Rx. Frame dropped.\n",
|
|
dev->name);
|
|
stats->rx_crc_errors++;
|
|
goto update_stats;
|
|
}
|
|
|
|
/* Handle frames in monitor mode */
|
|
if (priv->iw_mode == NL80211_IFTYPE_MONITOR) {
|
|
orinoco_rx_monitor(dev, rxfid, desc);
|
|
goto out;
|
|
}
|
|
|
|
if (status & HERMES_RXSTAT_UNDECRYPTABLE) {
|
|
DEBUG(1, "%s: Undecryptable frame on Rx. Frame dropped.\n",
|
|
dev->name);
|
|
wstats->discard.code++;
|
|
goto update_stats;
|
|
}
|
|
|
|
length = le16_to_cpu(desc->data_len);
|
|
|
|
/* Sanity checks */
|
|
if (length < 3) { /* No for even an 802.2 LLC header */
|
|
/* At least on Symbol firmware with PCF we get quite a
|
|
lot of these legitimately - Poll frames with no
|
|
data. */
|
|
goto out;
|
|
}
|
|
if (length > IEEE80211_MAX_DATA_LEN) {
|
|
printk(KERN_WARNING "%s: Oversized frame received (%d bytes)\n",
|
|
dev->name, length);
|
|
stats->rx_length_errors++;
|
|
goto update_stats;
|
|
}
|
|
|
|
/* Payload size does not include Michael MIC. Increase payload
|
|
* size to read it together with the data. */
|
|
if (status & HERMES_RXSTAT_MIC)
|
|
length += MICHAEL_MIC_LEN;
|
|
|
|
/* We need space for the packet data itself, plus an ethernet
|
|
header, plus 2 bytes so we can align the IP header on a
|
|
32bit boundary, plus 1 byte so we can read in odd length
|
|
packets from the card, which has an IO granularity of 16
|
|
bits */
|
|
skb = dev_alloc_skb(length+ETH_HLEN+2+1);
|
|
if (!skb) {
|
|
printk(KERN_WARNING "%s: Can't allocate skb for Rx\n",
|
|
dev->name);
|
|
goto update_stats;
|
|
}
|
|
|
|
/* We'll prepend the header, so reserve space for it. The worst
|
|
case is no decapsulation, when 802.3 header is prepended and
|
|
nothing is removed. 2 is for aligning the IP header. */
|
|
skb_reserve(skb, ETH_HLEN + 2);
|
|
|
|
err = hermes_bap_pread(hw, IRQ_BAP, skb_put(skb, length),
|
|
ALIGN(length, 2), rxfid,
|
|
HERMES_802_2_OFFSET);
|
|
if (err) {
|
|
printk(KERN_ERR "%s: error %d reading frame. "
|
|
"Frame dropped.\n", dev->name, err);
|
|
goto drop;
|
|
}
|
|
|
|
/* Add desc and skb to rx queue */
|
|
rx_data = kzalloc(sizeof(*rx_data), GFP_ATOMIC);
|
|
if (!rx_data) {
|
|
printk(KERN_WARNING "%s: Can't allocate RX packet\n",
|
|
dev->name);
|
|
goto drop;
|
|
}
|
|
rx_data->desc = desc;
|
|
rx_data->skb = skb;
|
|
list_add_tail(&rx_data->list, &priv->rx_list);
|
|
tasklet_schedule(&priv->rx_tasklet);
|
|
|
|
return;
|
|
|
|
drop:
|
|
dev_kfree_skb_irq(skb);
|
|
update_stats:
|
|
stats->rx_errors++;
|
|
stats->rx_dropped++;
|
|
out:
|
|
kfree(desc);
|
|
}
|
|
|
|
static void orinoco_rx(struct net_device *dev,
|
|
struct hermes_rx_descriptor *desc,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct orinoco_private *priv = ndev_priv(dev);
|
|
struct net_device_stats *stats = &priv->stats;
|
|
u16 status, fc;
|
|
int length;
|
|
struct ethhdr *hdr;
|
|
|
|
status = le16_to_cpu(desc->status);
|
|
length = le16_to_cpu(desc->data_len);
|
|
fc = le16_to_cpu(desc->frame_ctl);
|
|
|
|
/* Calculate and check MIC */
|
|
if (status & HERMES_RXSTAT_MIC) {
|
|
struct orinoco_tkip_key *key;
|
|
int key_id = ((status & HERMES_RXSTAT_MIC_KEY_ID) >>
|
|
HERMES_MIC_KEY_ID_SHIFT);
|
|
u8 mic[MICHAEL_MIC_LEN];
|
|
u8 *rxmic;
|
|
u8 *src = (fc & IEEE80211_FCTL_FROMDS) ?
|
|
desc->addr3 : desc->addr2;
|
|
|
|
/* Extract Michael MIC from payload */
|
|
rxmic = skb->data + skb->len - MICHAEL_MIC_LEN;
|
|
|
|
skb_trim(skb, skb->len - MICHAEL_MIC_LEN);
|
|
length -= MICHAEL_MIC_LEN;
|
|
|
|
key = (struct orinoco_tkip_key *) priv->keys[key_id].key;
|
|
|
|
if (!key) {
|
|
printk(KERN_WARNING "%s: Received encrypted frame from "
|
|
"%pM using key %i, but key is not installed\n",
|
|
dev->name, src, key_id);
|
|
goto drop;
|
|
}
|
|
|
|
orinoco_mic(priv->rx_tfm_mic, key->rx_mic, desc->addr1, src,
|
|
0, /* priority or QoS? */
|
|
skb->data, skb->len, &mic[0]);
|
|
|
|
if (memcmp(mic, rxmic,
|
|
MICHAEL_MIC_LEN)) {
|
|
union iwreq_data wrqu;
|
|
struct iw_michaelmicfailure wxmic;
|
|
|
|
printk(KERN_WARNING "%s: "
|
|
"Invalid Michael MIC in data frame from %pM, "
|
|
"using key %i\n",
|
|
dev->name, src, key_id);
|
|
|
|
/* TODO: update stats */
|
|
|
|
/* Notify userspace */
|
|
memset(&wxmic, 0, sizeof(wxmic));
|
|
wxmic.flags = key_id & IW_MICFAILURE_KEY_ID;
|
|
wxmic.flags |= (desc->addr1[0] & 1) ?
|
|
IW_MICFAILURE_GROUP : IW_MICFAILURE_PAIRWISE;
|
|
wxmic.src_addr.sa_family = ARPHRD_ETHER;
|
|
memcpy(wxmic.src_addr.sa_data, src, ETH_ALEN);
|
|
|
|
(void) orinoco_hw_get_tkip_iv(priv, key_id,
|
|
&wxmic.tsc[0]);
|
|
|
|
memset(&wrqu, 0, sizeof(wrqu));
|
|
wrqu.data.length = sizeof(wxmic);
|
|
wireless_send_event(dev, IWEVMICHAELMICFAILURE, &wrqu,
|
|
(char *) &wxmic);
|
|
|
|
goto drop;
|
|
}
|
|
}
|
|
|
|
/* Handle decapsulation
|
|
* In most cases, the firmware tell us about SNAP frames.
|
|
* For some reason, the SNAP frames sent by LinkSys APs
|
|
* are not properly recognised by most firmwares.
|
|
* So, check ourselves */
|
|
if (length >= ENCAPS_OVERHEAD &&
|
|
(((status & HERMES_RXSTAT_MSGTYPE) == HERMES_RXSTAT_1042) ||
|
|
((status & HERMES_RXSTAT_MSGTYPE) == HERMES_RXSTAT_TUNNEL) ||
|
|
is_ethersnap(skb->data))) {
|
|
/* These indicate a SNAP within 802.2 LLC within
|
|
802.11 frame which we'll need to de-encapsulate to
|
|
the original EthernetII frame. */
|
|
hdr = (struct ethhdr *)skb_push(skb,
|
|
ETH_HLEN - ENCAPS_OVERHEAD);
|
|
} else {
|
|
/* 802.3 frame - prepend 802.3 header as is */
|
|
hdr = (struct ethhdr *)skb_push(skb, ETH_HLEN);
|
|
hdr->h_proto = htons(length);
|
|
}
|
|
memcpy(hdr->h_dest, desc->addr1, ETH_ALEN);
|
|
if (fc & IEEE80211_FCTL_FROMDS)
|
|
memcpy(hdr->h_source, desc->addr3, ETH_ALEN);
|
|
else
|
|
memcpy(hdr->h_source, desc->addr2, ETH_ALEN);
|
|
|
|
skb->protocol = eth_type_trans(skb, dev);
|
|
skb->ip_summed = CHECKSUM_NONE;
|
|
if (fc & IEEE80211_FCTL_TODS)
|
|
skb->pkt_type = PACKET_OTHERHOST;
|
|
|
|
/* Process the wireless stats if needed */
|
|
orinoco_stat_gather(dev, skb, desc);
|
|
|
|
/* Pass the packet to the networking stack */
|
|
netif_rx(skb);
|
|
stats->rx_packets++;
|
|
stats->rx_bytes += length;
|
|
|
|
return;
|
|
|
|
drop:
|
|
dev_kfree_skb(skb);
|
|
stats->rx_errors++;
|
|
stats->rx_dropped++;
|
|
}
|
|
|
|
static void orinoco_rx_isr_tasklet(unsigned long data)
|
|
{
|
|
struct orinoco_private *priv = (struct orinoco_private *) data;
|
|
struct net_device *dev = priv->ndev;
|
|
struct orinoco_rx_data *rx_data, *temp;
|
|
struct hermes_rx_descriptor *desc;
|
|
struct sk_buff *skb;
|
|
unsigned long flags;
|
|
|
|
/* orinoco_rx requires the driver lock, and we also need to
|
|
* protect priv->rx_list, so just hold the lock over the
|
|
* lot.
|
|
*
|
|
* If orinoco_lock fails, we've unplugged the card. In this
|
|
* case just abort. */
|
|
if (orinoco_lock(priv, &flags) != 0)
|
|
return;
|
|
|
|
/* extract desc and skb from queue */
|
|
list_for_each_entry_safe(rx_data, temp, &priv->rx_list, list) {
|
|
desc = rx_data->desc;
|
|
skb = rx_data->skb;
|
|
list_del(&rx_data->list);
|
|
kfree(rx_data);
|
|
|
|
orinoco_rx(dev, desc, skb);
|
|
|
|
kfree(desc);
|
|
}
|
|
|
|
orinoco_unlock(priv, &flags);
|
|
}
|
|
|
|
/********************************************************************/
|
|
/* Rx path (info frames) */
|
|
/********************************************************************/
|
|
|
|
static void print_linkstatus(struct net_device *dev, u16 status)
|
|
{
|
|
char *s;
|
|
|
|
if (suppress_linkstatus)
|
|
return;
|
|
|
|
switch (status) {
|
|
case HERMES_LINKSTATUS_NOT_CONNECTED:
|
|
s = "Not Connected";
|
|
break;
|
|
case HERMES_LINKSTATUS_CONNECTED:
|
|
s = "Connected";
|
|
break;
|
|
case HERMES_LINKSTATUS_DISCONNECTED:
|
|
s = "Disconnected";
|
|
break;
|
|
case HERMES_LINKSTATUS_AP_CHANGE:
|
|
s = "AP Changed";
|
|
break;
|
|
case HERMES_LINKSTATUS_AP_OUT_OF_RANGE:
|
|
s = "AP Out of Range";
|
|
break;
|
|
case HERMES_LINKSTATUS_AP_IN_RANGE:
|
|
s = "AP In Range";
|
|
break;
|
|
case HERMES_LINKSTATUS_ASSOC_FAILED:
|
|
s = "Association Failed";
|
|
break;
|
|
default:
|
|
s = "UNKNOWN";
|
|
}
|
|
|
|
printk(KERN_DEBUG "%s: New link status: %s (%04x)\n",
|
|
dev->name, s, status);
|
|
}
|
|
|
|
/* Search scan results for requested BSSID, join it if found */
|
|
static void orinoco_join_ap(struct work_struct *work)
|
|
{
|
|
struct orinoco_private *priv =
|
|
container_of(work, struct orinoco_private, join_work);
|
|
struct net_device *dev = priv->ndev;
|
|
struct hermes *hw = &priv->hw;
|
|
int err;
|
|
unsigned long flags;
|
|
struct join_req {
|
|
u8 bssid[ETH_ALEN];
|
|
__le16 channel;
|
|
} __attribute__ ((packed)) req;
|
|
const int atom_len = offsetof(struct prism2_scan_apinfo, atim);
|
|
struct prism2_scan_apinfo *atom = NULL;
|
|
int offset = 4;
|
|
int found = 0;
|
|
u8 *buf;
|
|
u16 len;
|
|
|
|
/* Allocate buffer for scan results */
|
|
buf = kmalloc(MAX_SCAN_LEN, GFP_KERNEL);
|
|
if (!buf)
|
|
return;
|
|
|
|
if (orinoco_lock(priv, &flags) != 0)
|
|
goto fail_lock;
|
|
|
|
/* Sanity checks in case user changed something in the meantime */
|
|
if (!priv->bssid_fixed)
|
|
goto out;
|
|
|
|
if (strlen(priv->desired_essid) == 0)
|
|
goto out;
|
|
|
|
/* Read scan results from the firmware */
|
|
err = hermes_read_ltv(hw, USER_BAP,
|
|
HERMES_RID_SCANRESULTSTABLE,
|
|
MAX_SCAN_LEN, &len, buf);
|
|
if (err) {
|
|
printk(KERN_ERR "%s: Cannot read scan results\n",
|
|
dev->name);
|
|
goto out;
|
|
}
|
|
|
|
len = HERMES_RECLEN_TO_BYTES(len);
|
|
|
|
/* Go through the scan results looking for the channel of the AP
|
|
* we were requested to join */
|
|
for (; offset + atom_len <= len; offset += atom_len) {
|
|
atom = (struct prism2_scan_apinfo *) (buf + offset);
|
|
if (memcmp(&atom->bssid, priv->desired_bssid, ETH_ALEN) == 0) {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!found) {
|
|
DEBUG(1, "%s: Requested AP not found in scan results\n",
|
|
dev->name);
|
|
goto out;
|
|
}
|
|
|
|
memcpy(req.bssid, priv->desired_bssid, ETH_ALEN);
|
|
req.channel = atom->channel; /* both are little-endian */
|
|
err = HERMES_WRITE_RECORD(hw, USER_BAP, HERMES_RID_CNFJOINREQUEST,
|
|
&req);
|
|
if (err)
|
|
printk(KERN_ERR "%s: Error issuing join request\n", dev->name);
|
|
|
|
out:
|
|
orinoco_unlock(priv, &flags);
|
|
|
|
fail_lock:
|
|
kfree(buf);
|
|
}
|
|
|
|
/* Send new BSSID to userspace */
|
|
static void orinoco_send_bssid_wevent(struct orinoco_private *priv)
|
|
{
|
|
struct net_device *dev = priv->ndev;
|
|
struct hermes *hw = &priv->hw;
|
|
union iwreq_data wrqu;
|
|
int err;
|
|
|
|
err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_CURRENTBSSID,
|
|
ETH_ALEN, NULL, wrqu.ap_addr.sa_data);
|
|
if (err != 0)
|
|
return;
|
|
|
|
wrqu.ap_addr.sa_family = ARPHRD_ETHER;
|
|
|
|
/* Send event to user space */
|
|
wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
|
|
}
|
|
|
|
static void orinoco_send_assocreqie_wevent(struct orinoco_private *priv)
|
|
{
|
|
struct net_device *dev = priv->ndev;
|
|
struct hermes *hw = &priv->hw;
|
|
union iwreq_data wrqu;
|
|
int err;
|
|
u8 buf[88];
|
|
u8 *ie;
|
|
|
|
if (!priv->has_wpa)
|
|
return;
|
|
|
|
err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_CURRENT_ASSOC_REQ_INFO,
|
|
sizeof(buf), NULL, &buf);
|
|
if (err != 0)
|
|
return;
|
|
|
|
ie = orinoco_get_wpa_ie(buf, sizeof(buf));
|
|
if (ie) {
|
|
int rem = sizeof(buf) - (ie - &buf[0]);
|
|
wrqu.data.length = ie[1] + 2;
|
|
if (wrqu.data.length > rem)
|
|
wrqu.data.length = rem;
|
|
|
|
if (wrqu.data.length)
|
|
/* Send event to user space */
|
|
wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, ie);
|
|
}
|
|
}
|
|
|
|
static void orinoco_send_assocrespie_wevent(struct orinoco_private *priv)
|
|
{
|
|
struct net_device *dev = priv->ndev;
|
|
struct hermes *hw = &priv->hw;
|
|
union iwreq_data wrqu;
|
|
int err;
|
|
u8 buf[88]; /* TODO: verify max size or IW_GENERIC_IE_MAX */
|
|
u8 *ie;
|
|
|
|
if (!priv->has_wpa)
|
|
return;
|
|
|
|
err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_CURRENT_ASSOC_RESP_INFO,
|
|
sizeof(buf), NULL, &buf);
|
|
if (err != 0)
|
|
return;
|
|
|
|
ie = orinoco_get_wpa_ie(buf, sizeof(buf));
|
|
if (ie) {
|
|
int rem = sizeof(buf) - (ie - &buf[0]);
|
|
wrqu.data.length = ie[1] + 2;
|
|
if (wrqu.data.length > rem)
|
|
wrqu.data.length = rem;
|
|
|
|
if (wrqu.data.length)
|
|
/* Send event to user space */
|
|
wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, ie);
|
|
}
|
|
}
|
|
|
|
static void orinoco_send_wevents(struct work_struct *work)
|
|
{
|
|
struct orinoco_private *priv =
|
|
container_of(work, struct orinoco_private, wevent_work);
|
|
unsigned long flags;
|
|
|
|
if (orinoco_lock(priv, &flags) != 0)
|
|
return;
|
|
|
|
orinoco_send_assocreqie_wevent(priv);
|
|
orinoco_send_assocrespie_wevent(priv);
|
|
orinoco_send_bssid_wevent(priv);
|
|
|
|
orinoco_unlock(priv, &flags);
|
|
}
|
|
|
|
static void qbuf_scan(struct orinoco_private *priv, void *buf,
|
|
int len, int type)
|
|
{
|
|
struct orinoco_scan_data *sd;
|
|
unsigned long flags;
|
|
|
|
sd = kmalloc(sizeof(*sd), GFP_ATOMIC);
|
|
sd->buf = buf;
|
|
sd->len = len;
|
|
sd->type = type;
|
|
|
|
spin_lock_irqsave(&priv->scan_lock, flags);
|
|
list_add_tail(&sd->list, &priv->scan_list);
|
|
spin_unlock_irqrestore(&priv->scan_lock, flags);
|
|
|
|
schedule_work(&priv->process_scan);
|
|
}
|
|
|
|
static void qabort_scan(struct orinoco_private *priv)
|
|
{
|
|
struct orinoco_scan_data *sd;
|
|
unsigned long flags;
|
|
|
|
sd = kmalloc(sizeof(*sd), GFP_ATOMIC);
|
|
sd->len = -1; /* Abort */
|
|
|
|
spin_lock_irqsave(&priv->scan_lock, flags);
|
|
list_add_tail(&sd->list, &priv->scan_list);
|
|
spin_unlock_irqrestore(&priv->scan_lock, flags);
|
|
|
|
schedule_work(&priv->process_scan);
|
|
}
|
|
|
|
static void orinoco_process_scan_results(struct work_struct *work)
|
|
{
|
|
struct orinoco_private *priv =
|
|
container_of(work, struct orinoco_private, process_scan);
|
|
struct orinoco_scan_data *sd, *temp;
|
|
unsigned long flags;
|
|
void *buf;
|
|
int len;
|
|
int type;
|
|
|
|
spin_lock_irqsave(&priv->scan_lock, flags);
|
|
list_for_each_entry_safe(sd, temp, &priv->scan_list, list) {
|
|
spin_unlock_irqrestore(&priv->scan_lock, flags);
|
|
|
|
buf = sd->buf;
|
|
len = sd->len;
|
|
type = sd->type;
|
|
|
|
list_del(&sd->list);
|
|
kfree(sd);
|
|
|
|
if (len > 0) {
|
|
if (type == HERMES_INQ_CHANNELINFO)
|
|
orinoco_add_extscan_result(priv, buf, len);
|
|
else
|
|
orinoco_add_hostscan_results(priv, buf, len);
|
|
|
|
kfree(buf);
|
|
} else if (priv->scan_request) {
|
|
/* Either abort or complete the scan */
|
|
cfg80211_scan_done(priv->scan_request, (len < 0));
|
|
priv->scan_request = NULL;
|
|
}
|
|
|
|
spin_lock_irqsave(&priv->scan_lock, flags);
|
|
}
|
|
spin_unlock_irqrestore(&priv->scan_lock, flags);
|
|
}
|
|
|
|
static void __orinoco_ev_info(struct net_device *dev, hermes_t *hw)
|
|
{
|
|
struct orinoco_private *priv = ndev_priv(dev);
|
|
u16 infofid;
|
|
struct {
|
|
__le16 len;
|
|
__le16 type;
|
|
} __attribute__ ((packed)) info;
|
|
int len, type;
|
|
int err;
|
|
|
|
/* This is an answer to an INQUIRE command that we did earlier,
|
|
* or an information "event" generated by the card
|
|
* The controller return to us a pseudo frame containing
|
|
* the information in question - Jean II */
|
|
infofid = hermes_read_regn(hw, INFOFID);
|
|
|
|
/* Read the info frame header - don't try too hard */
|
|
err = hermes_bap_pread(hw, IRQ_BAP, &info, sizeof(info),
|
|
infofid, 0);
|
|
if (err) {
|
|
printk(KERN_ERR "%s: error %d reading info frame. "
|
|
"Frame dropped.\n", dev->name, err);
|
|
return;
|
|
}
|
|
|
|
len = HERMES_RECLEN_TO_BYTES(le16_to_cpu(info.len));
|
|
type = le16_to_cpu(info.type);
|
|
|
|
switch (type) {
|
|
case HERMES_INQ_TALLIES: {
|
|
struct hermes_tallies_frame tallies;
|
|
struct iw_statistics *wstats = &priv->wstats;
|
|
|
|
if (len > sizeof(tallies)) {
|
|
printk(KERN_WARNING "%s: Tallies frame too long (%d bytes)\n",
|
|
dev->name, len);
|
|
len = sizeof(tallies);
|
|
}
|
|
|
|
err = hermes_bap_pread(hw, IRQ_BAP, &tallies, len,
|
|
infofid, sizeof(info));
|
|
if (err)
|
|
break;
|
|
|
|
/* Increment our various counters */
|
|
/* wstats->discard.nwid - no wrong BSSID stuff */
|
|
wstats->discard.code +=
|
|
le16_to_cpu(tallies.RxWEPUndecryptable);
|
|
if (len == sizeof(tallies))
|
|
wstats->discard.code +=
|
|
le16_to_cpu(tallies.RxDiscards_WEPICVError) +
|
|
le16_to_cpu(tallies.RxDiscards_WEPExcluded);
|
|
wstats->discard.misc +=
|
|
le16_to_cpu(tallies.TxDiscardsWrongSA);
|
|
wstats->discard.fragment +=
|
|
le16_to_cpu(tallies.RxMsgInBadMsgFragments);
|
|
wstats->discard.retries +=
|
|
le16_to_cpu(tallies.TxRetryLimitExceeded);
|
|
/* wstats->miss.beacon - no match */
|
|
}
|
|
break;
|
|
case HERMES_INQ_LINKSTATUS: {
|
|
struct hermes_linkstatus linkstatus;
|
|
u16 newstatus;
|
|
int connected;
|
|
|
|
if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
|
|
break;
|
|
|
|
if (len != sizeof(linkstatus)) {
|
|
printk(KERN_WARNING "%s: Unexpected size for linkstatus frame (%d bytes)\n",
|
|
dev->name, len);
|
|
break;
|
|
}
|
|
|
|
err = hermes_bap_pread(hw, IRQ_BAP, &linkstatus, len,
|
|
infofid, sizeof(info));
|
|
if (err)
|
|
break;
|
|
newstatus = le16_to_cpu(linkstatus.linkstatus);
|
|
|
|
/* Symbol firmware uses "out of range" to signal that
|
|
* the hostscan frame can be requested. */
|
|
if (newstatus == HERMES_LINKSTATUS_AP_OUT_OF_RANGE &&
|
|
priv->firmware_type == FIRMWARE_TYPE_SYMBOL &&
|
|
priv->has_hostscan && priv->scan_request) {
|
|
hermes_inquire(hw, HERMES_INQ_HOSTSCAN_SYMBOL);
|
|
break;
|
|
}
|
|
|
|
connected = (newstatus == HERMES_LINKSTATUS_CONNECTED)
|
|
|| (newstatus == HERMES_LINKSTATUS_AP_CHANGE)
|
|
|| (newstatus == HERMES_LINKSTATUS_AP_IN_RANGE);
|
|
|
|
if (connected)
|
|
netif_carrier_on(dev);
|
|
else if (!ignore_disconnect)
|
|
netif_carrier_off(dev);
|
|
|
|
if (newstatus != priv->last_linkstatus) {
|
|
priv->last_linkstatus = newstatus;
|
|
print_linkstatus(dev, newstatus);
|
|
/* The info frame contains only one word which is the
|
|
* status (see hermes.h). The status is pretty boring
|
|
* in itself, that's why we export the new BSSID...
|
|
* Jean II */
|
|
schedule_work(&priv->wevent_work);
|
|
}
|
|
}
|
|
break;
|
|
case HERMES_INQ_SCAN:
|
|
if (!priv->scan_request && priv->bssid_fixed &&
|
|
priv->firmware_type == FIRMWARE_TYPE_INTERSIL) {
|
|
schedule_work(&priv->join_work);
|
|
break;
|
|
}
|
|
/* fall through */
|
|
case HERMES_INQ_HOSTSCAN:
|
|
case HERMES_INQ_HOSTSCAN_SYMBOL: {
|
|
/* Result of a scanning. Contains information about
|
|
* cells in the vicinity - Jean II */
|
|
unsigned char *buf;
|
|
|
|
/* Sanity check */
|
|
if (len > 4096) {
|
|
printk(KERN_WARNING "%s: Scan results too large (%d bytes)\n",
|
|
dev->name, len);
|
|
qabort_scan(priv);
|
|
break;
|
|
}
|
|
|
|
/* Allocate buffer for results */
|
|
buf = kmalloc(len, GFP_ATOMIC);
|
|
if (buf == NULL) {
|
|
/* No memory, so can't printk()... */
|
|
qabort_scan(priv);
|
|
break;
|
|
}
|
|
|
|
/* Read scan data */
|
|
err = hermes_bap_pread(hw, IRQ_BAP, (void *) buf, len,
|
|
infofid, sizeof(info));
|
|
if (err) {
|
|
kfree(buf);
|
|
qabort_scan(priv);
|
|
break;
|
|
}
|
|
|
|
#ifdef ORINOCO_DEBUG
|
|
{
|
|
int i;
|
|
printk(KERN_DEBUG "Scan result [%02X", buf[0]);
|
|
for (i = 1; i < (len * 2); i++)
|
|
printk(":%02X", buf[i]);
|
|
printk("]\n");
|
|
}
|
|
#endif /* ORINOCO_DEBUG */
|
|
|
|
qbuf_scan(priv, buf, len, type);
|
|
}
|
|
break;
|
|
case HERMES_INQ_CHANNELINFO:
|
|
{
|
|
struct agere_ext_scan_info *bss;
|
|
|
|
if (!priv->scan_request) {
|
|
printk(KERN_DEBUG "%s: Got chaninfo without scan, "
|
|
"len=%d\n", dev->name, len);
|
|
break;
|
|
}
|
|
|
|
/* An empty result indicates that the scan is complete */
|
|
if (len == 0) {
|
|
qbuf_scan(priv, NULL, len, type);
|
|
break;
|
|
}
|
|
|
|
/* Sanity check */
|
|
else if (len < (offsetof(struct agere_ext_scan_info,
|
|
data) + 2)) {
|
|
/* Drop this result now so we don't have to
|
|
* keep checking later */
|
|
printk(KERN_WARNING
|
|
"%s: Ext scan results too short (%d bytes)\n",
|
|
dev->name, len);
|
|
break;
|
|
}
|
|
|
|
bss = kmalloc(len, GFP_ATOMIC);
|
|
if (bss == NULL)
|
|
break;
|
|
|
|
/* Read scan data */
|
|
err = hermes_bap_pread(hw, IRQ_BAP, (void *) bss, len,
|
|
infofid, sizeof(info));
|
|
if (err)
|
|
kfree(bss);
|
|
else
|
|
qbuf_scan(priv, bss, len, type);
|
|
|
|
break;
|
|
}
|
|
case HERMES_INQ_SEC_STAT_AGERE:
|
|
/* Security status (Agere specific) */
|
|
/* Ignore this frame for now */
|
|
if (priv->firmware_type == FIRMWARE_TYPE_AGERE)
|
|
break;
|
|
/* fall through */
|
|
default:
|
|
printk(KERN_DEBUG "%s: Unknown information frame received: "
|
|
"type 0x%04x, length %d\n", dev->name, type, len);
|
|
/* We don't actually do anything about it */
|
|
break;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
static void __orinoco_ev_infdrop(struct net_device *dev, hermes_t *hw)
|
|
{
|
|
if (net_ratelimit())
|
|
printk(KERN_DEBUG "%s: Information frame lost.\n", dev->name);
|
|
}
|
|
|
|
/********************************************************************/
|
|
/* Internal hardware control routines */
|
|
/********************************************************************/
|
|
|
|
static int __orinoco_up(struct orinoco_private *priv)
|
|
{
|
|
struct net_device *dev = priv->ndev;
|
|
struct hermes *hw = &priv->hw;
|
|
int err;
|
|
|
|
netif_carrier_off(dev); /* just to make sure */
|
|
|
|
err = __orinoco_commit(priv);
|
|
if (err) {
|
|
printk(KERN_ERR "%s: Error %d configuring card\n",
|
|
dev->name, err);
|
|
return err;
|
|
}
|
|
|
|
/* Fire things up again */
|
|
hermes_set_irqmask(hw, ORINOCO_INTEN);
|
|
err = hermes_enable_port(hw, 0);
|
|
if (err) {
|
|
printk(KERN_ERR "%s: Error %d enabling MAC port\n",
|
|
dev->name, err);
|
|
return err;
|
|
}
|
|
|
|
netif_start_queue(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __orinoco_down(struct orinoco_private *priv)
|
|
{
|
|
struct net_device *dev = priv->ndev;
|
|
struct hermes *hw = &priv->hw;
|
|
int err;
|
|
|
|
netif_stop_queue(dev);
|
|
|
|
if (!priv->hw_unavailable) {
|
|
if (!priv->broken_disableport) {
|
|
err = hermes_disable_port(hw, 0);
|
|
if (err) {
|
|
/* Some firmwares (e.g. Intersil 1.3.x) seem
|
|
* to have problems disabling the port, oh
|
|
* well, too bad. */
|
|
printk(KERN_WARNING "%s: Error %d disabling MAC port\n",
|
|
dev->name, err);
|
|
priv->broken_disableport = 1;
|
|
}
|
|
}
|
|
hermes_set_irqmask(hw, 0);
|
|
hermes_write_regn(hw, EVACK, 0xffff);
|
|
}
|
|
|
|
/* firmware will have to reassociate */
|
|
netif_carrier_off(dev);
|
|
priv->last_linkstatus = 0xffff;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int orinoco_reinit_firmware(struct orinoco_private *priv)
|
|
{
|
|
struct hermes *hw = &priv->hw;
|
|
int err;
|
|
|
|
err = hermes_init(hw);
|
|
if (priv->do_fw_download && !err) {
|
|
err = orinoco_download(priv);
|
|
if (err)
|
|
priv->do_fw_download = 0;
|
|
}
|
|
if (!err)
|
|
err = orinoco_hw_allocate_fid(priv);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int
|
|
__orinoco_set_multicast_list(struct net_device *dev)
|
|
{
|
|
struct orinoco_private *priv = ndev_priv(dev);
|
|
int err = 0;
|
|
int promisc, mc_count;
|
|
|
|
/* The Hermes doesn't seem to have an allmulti mode, so we go
|
|
* into promiscuous mode and let the upper levels deal. */
|
|
if ((dev->flags & IFF_PROMISC) || (dev->flags & IFF_ALLMULTI) ||
|
|
(dev->mc_count > MAX_MULTICAST(priv))) {
|
|
promisc = 1;
|
|
mc_count = 0;
|
|
} else {
|
|
promisc = 0;
|
|
mc_count = dev->mc_count;
|
|
}
|
|
|
|
err = __orinoco_hw_set_multicast_list(priv, dev->mc_list, mc_count,
|
|
promisc);
|
|
|
|
return err;
|
|
}
|
|
|
|
/* This must be called from user context, without locks held - use
|
|
* schedule_work() */
|
|
void orinoco_reset(struct work_struct *work)
|
|
{
|
|
struct orinoco_private *priv =
|
|
container_of(work, struct orinoco_private, reset_work);
|
|
struct net_device *dev = priv->ndev;
|
|
struct hermes *hw = &priv->hw;
|
|
int err;
|
|
unsigned long flags;
|
|
|
|
if (orinoco_lock(priv, &flags) != 0)
|
|
/* When the hardware becomes available again, whatever
|
|
* detects that is responsible for re-initializing
|
|
* it. So no need for anything further */
|
|
return;
|
|
|
|
netif_stop_queue(dev);
|
|
|
|
/* Shut off interrupts. Depending on what state the hardware
|
|
* is in, this might not work, but we'll try anyway */
|
|
hermes_set_irqmask(hw, 0);
|
|
hermes_write_regn(hw, EVACK, 0xffff);
|
|
|
|
priv->hw_unavailable++;
|
|
priv->last_linkstatus = 0xffff; /* firmware will have to reassociate */
|
|
netif_carrier_off(dev);
|
|
|
|
orinoco_unlock(priv, &flags);
|
|
|
|
/* Scanning support: Notify scan cancellation */
|
|
if (priv->scan_request) {
|
|
cfg80211_scan_done(priv->scan_request, 1);
|
|
priv->scan_request = NULL;
|
|
}
|
|
|
|
if (priv->hard_reset) {
|
|
err = (*priv->hard_reset)(priv);
|
|
if (err) {
|
|
printk(KERN_ERR "%s: orinoco_reset: Error %d "
|
|
"performing hard reset\n", dev->name, err);
|
|
goto disable;
|
|
}
|
|
}
|
|
|
|
err = orinoco_reinit_firmware(priv);
|
|
if (err) {
|
|
printk(KERN_ERR "%s: orinoco_reset: Error %d re-initializing firmware\n",
|
|
dev->name, err);
|
|
goto disable;
|
|
}
|
|
|
|
/* This has to be called from user context */
|
|
spin_lock_irq(&priv->lock);
|
|
|
|
priv->hw_unavailable--;
|
|
|
|
/* priv->open or priv->hw_unavailable might have changed while
|
|
* we dropped the lock */
|
|
if (priv->open && (!priv->hw_unavailable)) {
|
|
err = __orinoco_up(priv);
|
|
if (err) {
|
|
printk(KERN_ERR "%s: orinoco_reset: Error %d reenabling card\n",
|
|
dev->name, err);
|
|
} else
|
|
dev->trans_start = jiffies;
|
|
}
|
|
|
|
spin_unlock_irq(&priv->lock);
|
|
|
|
return;
|
|
disable:
|
|
hermes_set_irqmask(hw, 0);
|
|
netif_device_detach(dev);
|
|
printk(KERN_ERR "%s: Device has been disabled!\n", dev->name);
|
|
}
|
|
|
|
static int __orinoco_commit(struct orinoco_private *priv)
|
|
{
|
|
struct net_device *dev = priv->ndev;
|
|
int err = 0;
|
|
|
|
err = orinoco_hw_program_rids(priv);
|
|
|
|
/* FIXME: what about netif_tx_lock */
|
|
(void) __orinoco_set_multicast_list(dev);
|
|
|
|
return err;
|
|
}
|
|
|
|
/* Ensures configuration changes are applied. May result in a reset.
|
|
* The caller should hold priv->lock
|
|
*/
|
|
int orinoco_commit(struct orinoco_private *priv)
|
|
{
|
|
struct net_device *dev = priv->ndev;
|
|
hermes_t *hw = &priv->hw;
|
|
int err;
|
|
|
|
if (priv->broken_disableport) {
|
|
schedule_work(&priv->reset_work);
|
|
return 0;
|
|
}
|
|
|
|
err = hermes_disable_port(hw, 0);
|
|
if (err) {
|
|
printk(KERN_WARNING "%s: Unable to disable port "
|
|
"while reconfiguring card\n", dev->name);
|
|
priv->broken_disableport = 1;
|
|
goto out;
|
|
}
|
|
|
|
err = __orinoco_commit(priv);
|
|
if (err) {
|
|
printk(KERN_WARNING "%s: Unable to reconfigure card\n",
|
|
dev->name);
|
|
goto out;
|
|
}
|
|
|
|
err = hermes_enable_port(hw, 0);
|
|
if (err) {
|
|
printk(KERN_WARNING "%s: Unable to enable port while reconfiguring card\n",
|
|
dev->name);
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
if (err) {
|
|
printk(KERN_WARNING "%s: Resetting instead...\n", dev->name);
|
|
schedule_work(&priv->reset_work);
|
|
err = 0;
|
|
}
|
|
return err;
|
|
}
|
|
|
|
/********************************************************************/
|
|
/* Interrupt handler */
|
|
/********************************************************************/
|
|
|
|
static void __orinoco_ev_tick(struct net_device *dev, hermes_t *hw)
|
|
{
|
|
printk(KERN_DEBUG "%s: TICK\n", dev->name);
|
|
}
|
|
|
|
static void __orinoco_ev_wterr(struct net_device *dev, hermes_t *hw)
|
|
{
|
|
/* This seems to happen a fair bit under load, but ignoring it
|
|
seems to work fine...*/
|
|
printk(KERN_DEBUG "%s: MAC controller error (WTERR). Ignoring.\n",
|
|
dev->name);
|
|
}
|
|
|
|
irqreturn_t orinoco_interrupt(int irq, void *dev_id)
|
|
{
|
|
struct orinoco_private *priv = dev_id;
|
|
struct net_device *dev = priv->ndev;
|
|
hermes_t *hw = &priv->hw;
|
|
int count = MAX_IRQLOOPS_PER_IRQ;
|
|
u16 evstat, events;
|
|
/* These are used to detect a runaway interrupt situation.
|
|
*
|
|
* If we get more than MAX_IRQLOOPS_PER_JIFFY iterations in a jiffy,
|
|
* we panic and shut down the hardware
|
|
*/
|
|
/* jiffies value the last time we were called */
|
|
static int last_irq_jiffy; /* = 0 */
|
|
static int loops_this_jiffy; /* = 0 */
|
|
unsigned long flags;
|
|
|
|
if (orinoco_lock(priv, &flags) != 0) {
|
|
/* If hw is unavailable - we don't know if the irq was
|
|
* for us or not */
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
evstat = hermes_read_regn(hw, EVSTAT);
|
|
events = evstat & hw->inten;
|
|
if (!events) {
|
|
orinoco_unlock(priv, &flags);
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
if (jiffies != last_irq_jiffy)
|
|
loops_this_jiffy = 0;
|
|
last_irq_jiffy = jiffies;
|
|
|
|
while (events && count--) {
|
|
if (++loops_this_jiffy > MAX_IRQLOOPS_PER_JIFFY) {
|
|
printk(KERN_WARNING "%s: IRQ handler is looping too "
|
|
"much! Resetting.\n", dev->name);
|
|
/* Disable interrupts for now */
|
|
hermes_set_irqmask(hw, 0);
|
|
schedule_work(&priv->reset_work);
|
|
break;
|
|
}
|
|
|
|
/* Check the card hasn't been removed */
|
|
if (!hermes_present(hw)) {
|
|
DEBUG(0, "orinoco_interrupt(): card removed\n");
|
|
break;
|
|
}
|
|
|
|
if (events & HERMES_EV_TICK)
|
|
__orinoco_ev_tick(dev, hw);
|
|
if (events & HERMES_EV_WTERR)
|
|
__orinoco_ev_wterr(dev, hw);
|
|
if (events & HERMES_EV_INFDROP)
|
|
__orinoco_ev_infdrop(dev, hw);
|
|
if (events & HERMES_EV_INFO)
|
|
__orinoco_ev_info(dev, hw);
|
|
if (events & HERMES_EV_RX)
|
|
__orinoco_ev_rx(dev, hw);
|
|
if (events & HERMES_EV_TXEXC)
|
|
__orinoco_ev_txexc(dev, hw);
|
|
if (events & HERMES_EV_TX)
|
|
__orinoco_ev_tx(dev, hw);
|
|
if (events & HERMES_EV_ALLOC)
|
|
__orinoco_ev_alloc(dev, hw);
|
|
|
|
hermes_write_regn(hw, EVACK, evstat);
|
|
|
|
evstat = hermes_read_regn(hw, EVSTAT);
|
|
events = evstat & hw->inten;
|
|
};
|
|
|
|
orinoco_unlock(priv, &flags);
|
|
return IRQ_HANDLED;
|
|
}
|
|
EXPORT_SYMBOL(orinoco_interrupt);
|
|
|
|
/********************************************************************/
|
|
/* Power management */
|
|
/********************************************************************/
|
|
#if defined(CONFIG_PM_SLEEP) && !defined(CONFIG_HERMES_CACHE_FW_ON_INIT)
|
|
static int orinoco_pm_notifier(struct notifier_block *notifier,
|
|
unsigned long pm_event,
|
|
void *unused)
|
|
{
|
|
struct orinoco_private *priv = container_of(notifier,
|
|
struct orinoco_private,
|
|
pm_notifier);
|
|
|
|
/* All we need to do is cache the firmware before suspend, and
|
|
* release it when we come out.
|
|
*
|
|
* Only need to do this if we're downloading firmware. */
|
|
if (!priv->do_fw_download)
|
|
return NOTIFY_DONE;
|
|
|
|
switch (pm_event) {
|
|
case PM_HIBERNATION_PREPARE:
|
|
case PM_SUSPEND_PREPARE:
|
|
orinoco_cache_fw(priv, 0);
|
|
break;
|
|
|
|
case PM_POST_RESTORE:
|
|
/* Restore from hibernation failed. We need to clean
|
|
* up in exactly the same way, so fall through. */
|
|
case PM_POST_HIBERNATION:
|
|
case PM_POST_SUSPEND:
|
|
orinoco_uncache_fw(priv);
|
|
break;
|
|
|
|
case PM_RESTORE_PREPARE:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
static void orinoco_register_pm_notifier(struct orinoco_private *priv)
|
|
{
|
|
priv->pm_notifier.notifier_call = orinoco_pm_notifier;
|
|
register_pm_notifier(&priv->pm_notifier);
|
|
}
|
|
|
|
static void orinoco_unregister_pm_notifier(struct orinoco_private *priv)
|
|
{
|
|
unregister_pm_notifier(&priv->pm_notifier);
|
|
}
|
|
#else /* !PM_SLEEP || HERMES_CACHE_FW_ON_INIT */
|
|
#define orinoco_register_pm_notifier(priv) do { } while(0)
|
|
#define orinoco_unregister_pm_notifier(priv) do { } while(0)
|
|
#endif
|
|
|
|
/********************************************************************/
|
|
/* Initialization */
|
|
/********************************************************************/
|
|
|
|
int orinoco_init(struct orinoco_private *priv)
|
|
{
|
|
struct device *dev = priv->dev;
|
|
struct wiphy *wiphy = priv_to_wiphy(priv);
|
|
hermes_t *hw = &priv->hw;
|
|
int err = 0;
|
|
|
|
/* No need to lock, the hw_unavailable flag is already set in
|
|
* alloc_orinocodev() */
|
|
priv->nicbuf_size = IEEE80211_MAX_FRAME_LEN + ETH_HLEN;
|
|
|
|
/* Initialize the firmware */
|
|
err = hermes_init(hw);
|
|
if (err != 0) {
|
|
dev_err(dev, "Failed to initialize firmware (err = %d)\n",
|
|
err);
|
|
goto out;
|
|
}
|
|
|
|
err = determine_fw_capabilities(priv, wiphy->fw_version,
|
|
sizeof(wiphy->fw_version),
|
|
&wiphy->hw_version);
|
|
if (err != 0) {
|
|
dev_err(dev, "Incompatible firmware, aborting\n");
|
|
goto out;
|
|
}
|
|
|
|
if (priv->do_fw_download) {
|
|
#ifdef CONFIG_HERMES_CACHE_FW_ON_INIT
|
|
orinoco_cache_fw(priv, 0);
|
|
#endif
|
|
|
|
err = orinoco_download(priv);
|
|
if (err)
|
|
priv->do_fw_download = 0;
|
|
|
|
/* Check firmware version again */
|
|
err = determine_fw_capabilities(priv, wiphy->fw_version,
|
|
sizeof(wiphy->fw_version),
|
|
&wiphy->hw_version);
|
|
if (err != 0) {
|
|
dev_err(dev, "Incompatible firmware, aborting\n");
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (priv->has_port3)
|
|
dev_info(dev, "Ad-hoc demo mode supported\n");
|
|
if (priv->has_ibss)
|
|
dev_info(dev, "IEEE standard IBSS ad-hoc mode supported\n");
|
|
if (priv->has_wep)
|
|
dev_info(dev, "WEP supported, %s-bit key\n",
|
|
priv->has_big_wep ? "104" : "40");
|
|
if (priv->has_wpa) {
|
|
dev_info(dev, "WPA-PSK supported\n");
|
|
if (orinoco_mic_init(priv)) {
|
|
dev_err(dev, "Failed to setup MIC crypto algorithm. "
|
|
"Disabling WPA support\n");
|
|
priv->has_wpa = 0;
|
|
}
|
|
}
|
|
|
|
err = orinoco_hw_read_card_settings(priv, wiphy->perm_addr);
|
|
if (err)
|
|
goto out;
|
|
|
|
err = orinoco_hw_allocate_fid(priv);
|
|
if (err) {
|
|
dev_err(dev, "Failed to allocate NIC buffer!\n");
|
|
goto out;
|
|
}
|
|
|
|
/* Set up the default configuration */
|
|
priv->iw_mode = NL80211_IFTYPE_STATION;
|
|
/* By default use IEEE/IBSS ad-hoc mode if we have it */
|
|
priv->prefer_port3 = priv->has_port3 && (!priv->has_ibss);
|
|
set_port_type(priv);
|
|
priv->channel = 0; /* use firmware default */
|
|
|
|
priv->promiscuous = 0;
|
|
priv->encode_alg = ORINOCO_ALG_NONE;
|
|
priv->tx_key = 0;
|
|
priv->wpa_enabled = 0;
|
|
priv->tkip_cm_active = 0;
|
|
priv->key_mgmt = 0;
|
|
priv->wpa_ie_len = 0;
|
|
priv->wpa_ie = NULL;
|
|
|
|
if (orinoco_wiphy_register(wiphy)) {
|
|
err = -ENODEV;
|
|
goto out;
|
|
}
|
|
|
|
/* Make the hardware available, as long as it hasn't been
|
|
* removed elsewhere (e.g. by PCMCIA hot unplug) */
|
|
spin_lock_irq(&priv->lock);
|
|
priv->hw_unavailable--;
|
|
spin_unlock_irq(&priv->lock);
|
|
|
|
dev_dbg(dev, "Ready\n");
|
|
|
|
out:
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL(orinoco_init);
|
|
|
|
static const struct net_device_ops orinoco_netdev_ops = {
|
|
.ndo_open = orinoco_open,
|
|
.ndo_stop = orinoco_stop,
|
|
.ndo_start_xmit = orinoco_xmit,
|
|
.ndo_set_multicast_list = orinoco_set_multicast_list,
|
|
.ndo_change_mtu = orinoco_change_mtu,
|
|
.ndo_set_mac_address = eth_mac_addr,
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
.ndo_tx_timeout = orinoco_tx_timeout,
|
|
.ndo_get_stats = orinoco_get_stats,
|
|
};
|
|
|
|
/* Allocate private data.
|
|
*
|
|
* This driver has a number of structures associated with it
|
|
* netdev - Net device structure for each network interface
|
|
* wiphy - structure associated with wireless phy
|
|
* wireless_dev (wdev) - structure for each wireless interface
|
|
* hw - structure for hermes chip info
|
|
* card - card specific structure for use by the card driver
|
|
* (airport, orinoco_cs)
|
|
* priv - orinoco private data
|
|
* device - generic linux device structure
|
|
*
|
|
* +---------+ +---------+
|
|
* | wiphy | | netdev |
|
|
* | +-------+ | +-------+
|
|
* | | priv | | | wdev |
|
|
* | | +-----+ +-+-------+
|
|
* | | | hw |
|
|
* | +-+-----+
|
|
* | | card |
|
|
* +-+-------+
|
|
*
|
|
* priv has a link to netdev and device
|
|
* wdev has a link to wiphy
|
|
*/
|
|
struct orinoco_private
|
|
*alloc_orinocodev(int sizeof_card,
|
|
struct device *device,
|
|
int (*hard_reset)(struct orinoco_private *),
|
|
int (*stop_fw)(struct orinoco_private *, int))
|
|
{
|
|
struct orinoco_private *priv;
|
|
struct wiphy *wiphy;
|
|
|
|
/* allocate wiphy
|
|
* NOTE: We only support a single virtual interface
|
|
* but this may change when monitor mode is added
|
|
*/
|
|
wiphy = wiphy_new(&orinoco_cfg_ops,
|
|
sizeof(struct orinoco_private) + sizeof_card);
|
|
if (!wiphy)
|
|
return NULL;
|
|
|
|
priv = wiphy_priv(wiphy);
|
|
priv->dev = device;
|
|
|
|
if (sizeof_card)
|
|
priv->card = (void *)((unsigned long)priv
|
|
+ sizeof(struct orinoco_private));
|
|
else
|
|
priv->card = NULL;
|
|
|
|
orinoco_wiphy_init(wiphy);
|
|
|
|
#ifdef WIRELESS_SPY
|
|
priv->wireless_data.spy_data = &priv->spy_data;
|
|
#endif
|
|
|
|
/* Set up default callbacks */
|
|
priv->hard_reset = hard_reset;
|
|
priv->stop_fw = stop_fw;
|
|
|
|
spin_lock_init(&priv->lock);
|
|
priv->open = 0;
|
|
priv->hw_unavailable = 1; /* orinoco_init() must clear this
|
|
* before anything else touches the
|
|
* hardware */
|
|
INIT_WORK(&priv->reset_work, orinoco_reset);
|
|
INIT_WORK(&priv->join_work, orinoco_join_ap);
|
|
INIT_WORK(&priv->wevent_work, orinoco_send_wevents);
|
|
|
|
INIT_LIST_HEAD(&priv->rx_list);
|
|
tasklet_init(&priv->rx_tasklet, orinoco_rx_isr_tasklet,
|
|
(unsigned long) priv);
|
|
|
|
spin_lock_init(&priv->scan_lock);
|
|
INIT_LIST_HEAD(&priv->scan_list);
|
|
INIT_WORK(&priv->process_scan, orinoco_process_scan_results);
|
|
|
|
priv->last_linkstatus = 0xffff;
|
|
|
|
#if defined(CONFIG_HERMES_CACHE_FW_ON_INIT) || defined(CONFIG_PM_SLEEP)
|
|
priv->cached_pri_fw = NULL;
|
|
priv->cached_fw = NULL;
|
|
#endif
|
|
|
|
/* Register PM notifiers */
|
|
orinoco_register_pm_notifier(priv);
|
|
|
|
return priv;
|
|
}
|
|
EXPORT_SYMBOL(alloc_orinocodev);
|
|
|
|
/* We can only support a single interface. We provide a separate
|
|
* function to set it up to distinguish between hardware
|
|
* initialisation and interface setup.
|
|
*
|
|
* The base_addr and irq parameters are passed on to netdev for use
|
|
* with SIOCGIFMAP.
|
|
*/
|
|
int orinoco_if_add(struct orinoco_private *priv,
|
|
unsigned long base_addr,
|
|
unsigned int irq)
|
|
{
|
|
struct wiphy *wiphy = priv_to_wiphy(priv);
|
|
struct wireless_dev *wdev;
|
|
struct net_device *dev;
|
|
int ret;
|
|
|
|
dev = alloc_etherdev(sizeof(struct wireless_dev));
|
|
|
|
if (!dev)
|
|
return -ENOMEM;
|
|
|
|
/* Initialise wireless_dev */
|
|
wdev = netdev_priv(dev);
|
|
wdev->wiphy = wiphy;
|
|
wdev->iftype = NL80211_IFTYPE_STATION;
|
|
|
|
/* Setup / override net_device fields */
|
|
dev->ieee80211_ptr = wdev;
|
|
dev->netdev_ops = &orinoco_netdev_ops;
|
|
dev->watchdog_timeo = HZ; /* 1 second timeout */
|
|
dev->wireless_handlers = &orinoco_handler_def;
|
|
#ifdef WIRELESS_SPY
|
|
dev->wireless_data = &priv->wireless_data;
|
|
#endif
|
|
/* we use the default eth_mac_addr for setting the MAC addr */
|
|
|
|
/* Reserve space in skb for the SNAP header */
|
|
dev->hard_header_len += ENCAPS_OVERHEAD;
|
|
|
|
netif_carrier_off(dev);
|
|
|
|
memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
|
|
memcpy(dev->perm_addr, wiphy->perm_addr, ETH_ALEN);
|
|
|
|
dev->base_addr = base_addr;
|
|
dev->irq = irq;
|
|
|
|
SET_NETDEV_DEV(dev, priv->dev);
|
|
ret = register_netdev(dev);
|
|
if (ret)
|
|
goto fail;
|
|
|
|
priv->ndev = dev;
|
|
|
|
/* Report what we've done */
|
|
dev_dbg(priv->dev, "Registerred interface %s.\n", dev->name);
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
free_netdev(dev);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(orinoco_if_add);
|
|
|
|
void orinoco_if_del(struct orinoco_private *priv)
|
|
{
|
|
struct net_device *dev = priv->ndev;
|
|
|
|
unregister_netdev(dev);
|
|
free_netdev(dev);
|
|
}
|
|
EXPORT_SYMBOL(orinoco_if_del);
|
|
|
|
void free_orinocodev(struct orinoco_private *priv)
|
|
{
|
|
struct wiphy *wiphy = priv_to_wiphy(priv);
|
|
struct orinoco_rx_data *rx_data, *temp;
|
|
struct orinoco_scan_data *sd, *sdtemp;
|
|
|
|
wiphy_unregister(wiphy);
|
|
|
|
/* If the tasklet is scheduled when we call tasklet_kill it
|
|
* will run one final time. However the tasklet will only
|
|
* drain priv->rx_list if the hw is still available. */
|
|
tasklet_kill(&priv->rx_tasklet);
|
|
|
|
/* Explicitly drain priv->rx_list */
|
|
list_for_each_entry_safe(rx_data, temp, &priv->rx_list, list) {
|
|
list_del(&rx_data->list);
|
|
|
|
dev_kfree_skb(rx_data->skb);
|
|
kfree(rx_data->desc);
|
|
kfree(rx_data);
|
|
}
|
|
|
|
cancel_work_sync(&priv->process_scan);
|
|
/* Explicitly drain priv->scan_list */
|
|
list_for_each_entry_safe(sd, sdtemp, &priv->scan_list, list) {
|
|
list_del(&sd->list);
|
|
|
|
if ((sd->len > 0) && sd->buf)
|
|
kfree(sd->buf);
|
|
kfree(sd);
|
|
}
|
|
|
|
orinoco_unregister_pm_notifier(priv);
|
|
orinoco_uncache_fw(priv);
|
|
|
|
priv->wpa_ie_len = 0;
|
|
kfree(priv->wpa_ie);
|
|
orinoco_mic_free(priv);
|
|
wiphy_free(wiphy);
|
|
}
|
|
EXPORT_SYMBOL(free_orinocodev);
|
|
|
|
int orinoco_up(struct orinoco_private *priv)
|
|
{
|
|
struct net_device *dev = priv->ndev;
|
|
unsigned long flags;
|
|
int err;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
err = orinoco_reinit_firmware(priv);
|
|
if (err) {
|
|
printk(KERN_ERR "%s: Error %d re-initializing firmware\n",
|
|
dev->name, err);
|
|
goto exit;
|
|
}
|
|
|
|
netif_device_attach(dev);
|
|
priv->hw_unavailable--;
|
|
|
|
if (priv->open && !priv->hw_unavailable) {
|
|
err = __orinoco_up(priv);
|
|
if (err)
|
|
printk(KERN_ERR "%s: Error %d restarting card\n",
|
|
dev->name, err);
|
|
}
|
|
|
|
exit:
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(orinoco_up);
|
|
|
|
void orinoco_down(struct orinoco_private *priv)
|
|
{
|
|
struct net_device *dev = priv->ndev;
|
|
unsigned long flags;
|
|
int err;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
err = __orinoco_down(priv);
|
|
if (err)
|
|
printk(KERN_WARNING "%s: Error %d downing interface\n",
|
|
dev->name, err);
|
|
|
|
netif_device_detach(dev);
|
|
priv->hw_unavailable++;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
}
|
|
EXPORT_SYMBOL(orinoco_down);
|
|
|
|
/********************************************************************/
|
|
/* Module initialization */
|
|
/********************************************************************/
|
|
|
|
/* Can't be declared "const" or the whole __initdata section will
|
|
* become const */
|
|
static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
|
|
" (David Gibson <hermes@gibson.dropbear.id.au>, "
|
|
"Pavel Roskin <proski@gnu.org>, et al)";
|
|
|
|
static int __init init_orinoco(void)
|
|
{
|
|
printk(KERN_DEBUG "%s\n", version);
|
|
return 0;
|
|
}
|
|
|
|
static void __exit exit_orinoco(void)
|
|
{
|
|
}
|
|
|
|
module_init(init_orinoco);
|
|
module_exit(exit_orinoco);
|