diff options
Diffstat (limited to 'drivers/net/wireless/intersil/orinoco/main.c')
| -rw-r--r-- | drivers/net/wireless/intersil/orinoco/main.c | 2414 |
1 files changed, 0 insertions, 2414 deletions
diff --git a/drivers/net/wireless/intersil/orinoco/main.c b/drivers/net/wireless/intersil/orinoco/main.c deleted file mode 100644 index 7df88d20ff3d..000000000000 --- a/drivers/net/wireless/intersil/orinoco/main.c +++ /dev/null @@ -1,2414 +0,0 @@ -/* main.c - (formerly known as dldwd_cs.c, orinoco_cs.c and orinoco.c) - * - * A driver for Hermes or Prism 2 chipset based PCMCIA wireless - * adaptors, with Lucent/Agere, Intersil or Symbol firmware. - * - * Current maintainers (as of 29 September 2003) are: - * Pavel Roskin <proski AT gnu.org> - * and David Gibson <hermes AT gibson.dropbear.id.au> - * - * (C) Copyright David Gibson, IBM Corporation 2001-2003. - * Copyright (C) 2000 David Gibson, Linuxcare Australia. - * With some help from : - * Copyright (C) 2001 Jean Tourrilhes, HP Labs - * Copyright (C) 2001 Benjamin Herrenschmidt - * - * Based on dummy_cs.c 1.27 2000/06/12 21:27:25 - * - * Portions based on wvlan_cs.c 1.0.6, Copyright Andreas Neuhaus <andy - * AT fasta.fh-dortmund.de> - * http://www.stud.fh-dortmund.de/~andy/wvlan/ - * - * The contents of this file are subject to the Mozilla Public License - * Version 1.1 (the "License"); you may not use this file except in - * compliance with the License. You may obtain a copy of the License - * at http://www.mozilla.org/MPL/ - * - * Software distributed under the License is distributed on an "AS IS" - * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - * the License for the specific language governing rights and - * limitations under the License. - * - * The initial developer of the original code is David A. Hinds - * <dahinds AT users.sourceforge.net>. Portions created by David - * A. Hinds are Copyright (C) 1999 David A. Hinds. All Rights - * Reserved. - * - * Alternatively, the contents of this file may be used under the - * terms of the GNU General Public License version 2 (the "GPL"), in - * which case the provisions of the GPL are applicable instead of the - * above. If you wish to allow the use of your version of this file - * only under the terms of the GPL and not to allow others to use your - * version of this file under the MPL, indicate your decision by - * deleting the provisions above and replace them with the notice and - * other provisions required by the GPL. If you do not delete the - * provisions above, a recipient may use your version of this file - * under either the MPL or the GPL. */ - -/* - * TODO - * o Handle de-encapsulation within network layer, provide 802.11 - * headers (patch from Thomas 'Dent' Mirlacher) - * o Fix possible races in SPY handling. - * o Disconnect wireless extensions from fundamental configuration. - * o (maybe) Software WEP support (patch from Stano Meduna). - * o (maybe) Use multiple Tx buffers - driver handling queue - * rather than firmware. - */ - -/* Locking and synchronization: - * - * The basic principle is that everything is serialized through a - * single spinlock, priv->lock. The lock is used in user, bh and irq - * context, so when taken outside hardirq context it should always be - * taken with interrupts disabled. The lock protects both the - * hardware and the struct orinoco_private. - * - * Another flag, priv->hw_unavailable indicates that the hardware is - * unavailable for an extended period of time (e.g. suspended, or in - * the middle of a hard reset). This flag is protected by the - * spinlock. All code which touches the hardware should check the - * flag after taking the lock, and if it is set, give up on whatever - * they are doing and drop the lock again. The orinoco_lock() - * function handles this (it unlocks and returns -EBUSY if - * hw_unavailable is non-zero). - */ - -#define DRIVER_NAME "orinoco" - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/slab.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/device.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/suspend.h> -#include <linux/if_arp.h> -#include <linux/wireless.h> -#include <linux/ieee80211.h> -#include <net/iw_handler.h> -#include <net/cfg80211.h> - -#include "hermes_rid.h" -#include "hermes_dld.h" -#include "hw.h" -#include "scan.h" -#include "mic.h" -#include "fw.h" -#include "wext.h" -#include "cfg.h" -#include "main.h" - -#include "orinoco.h" - -/********************************************************************/ -/* Module information */ -/********************************************************************/ - -MODULE_AUTHOR("Pavel Roskin <proski@gnu.org> & " - "David Gibson <hermes@gibson.dropbear.id.au>"); -MODULE_DESCRIPTION("Driver for Lucent Orinoco, Prism II based " - "and similar wireless cards"); -MODULE_LICENSE("Dual MPL/GPL"); - -/* Level of debugging. Used in the macros in orinoco.h */ -#ifdef ORINOCO_DEBUG -int orinoco_debug = ORINOCO_DEBUG; -EXPORT_SYMBOL(orinoco_debug); -module_param(orinoco_debug, int, 0644); -MODULE_PARM_DESC(orinoco_debug, "Debug level"); -#endif - -static bool suppress_linkstatus; /* = 0 */ -module_param(suppress_linkstatus, bool, 0644); -MODULE_PARM_DESC(suppress_linkstatus, "Don't log link status changes"); - -static int ignore_disconnect; /* = 0 */ -module_param(ignore_disconnect, int, 0644); -MODULE_PARM_DESC(ignore_disconnect, - "Don't report lost link to the network layer"); - -int force_monitor; /* = 0 */ -module_param(force_monitor, int, 0644); -MODULE_PARM_DESC(force_monitor, "Allow monitor mode for all firmware versions"); - -/********************************************************************/ -/* Internal constants */ -/********************************************************************/ - -/* 802.2 LLC/SNAP header used for Ethernet encapsulation over 802.11 */ -static const u8 encaps_hdr[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00}; -#define ENCAPS_OVERHEAD (sizeof(encaps_hdr) + 2) - -#define ORINOCO_MIN_MTU 256 -#define ORINOCO_MAX_MTU (IEEE80211_MAX_DATA_LEN - ENCAPS_OVERHEAD) - -#define MAX_IRQLOOPS_PER_IRQ 10 -#define MAX_IRQLOOPS_PER_JIFFY (20000 / HZ) /* Based on a guestimate of - * how many events the - * device could - * legitimately generate */ - -#define DUMMY_FID 0xFFFF - -/*#define MAX_MULTICAST(priv) (priv->firmware_type == FIRMWARE_TYPE_AGERE ? \ - HERMES_MAX_MULTICAST : 0)*/ -#define MAX_MULTICAST(priv) (HERMES_MAX_MULTICAST) - -#define ORINOCO_INTEN (HERMES_EV_RX | HERMES_EV_ALLOC \ - | HERMES_EV_TX | HERMES_EV_TXEXC \ - | HERMES_EV_WTERR | HERMES_EV_INFO \ - | HERMES_EV_INFDROP) - -/********************************************************************/ -/* Data types */ -/********************************************************************/ - -/* Beginning of the Tx descriptor, used in TxExc handling */ -struct hermes_txexc_data { - struct hermes_tx_descriptor desc; - __le16 frame_ctl; - __le16 duration_id; - u8 addr1[ETH_ALEN]; -} __packed; - -/* Rx frame header except compatibility 802.3 header */ -struct hermes_rx_descriptor { - /* Control */ - __le16 status; - __le32 time; - u8 silence; - u8 signal; - u8 rate; - u8 rxflow; - __le32 reserved; - - /* 802.11 header */ - __le16 frame_ctl; - __le16 duration_id; - u8 addr1[ETH_ALEN]; - u8 addr2[ETH_ALEN]; - u8 addr3[ETH_ALEN]; - __le16 seq_ctl; - u8 addr4[ETH_ALEN]; - - /* Data length */ - __le16 data_len; -} __packed; - -struct orinoco_rx_data { - struct hermes_rx_descriptor *desc; - struct sk_buff *skb; - struct list_head list; -}; - -struct orinoco_scan_data { - void *buf; - size_t len; - int type; - struct list_head list; -}; - -/********************************************************************/ -/* Function prototypes */ -/********************************************************************/ - -static int __orinoco_set_multicast_list(struct net_device *dev); -static int __orinoco_up(struct orinoco_private *priv); -static int __orinoco_down(struct orinoco_private *priv); -static int __orinoco_commit(struct orinoco_private *priv); - -/********************************************************************/ -/* Internal helper functions */ -/********************************************************************/ - -void set_port_type(struct orinoco_private *priv) -{ - switch (priv->iw_mode) { - case NL80211_IFTYPE_STATION: - priv->port_type = 1; - priv->createibss = 0; - break; - case NL80211_IFTYPE_ADHOC: - if (priv->prefer_port3) { - priv->port_type = 3; - priv->createibss = 0; - } else { - priv->port_type = priv->ibss_port; - priv->createibss = 1; - } - break; - case NL80211_IFTYPE_MONITOR: - priv->port_type = 3; - priv->createibss = 0; - break; - default: - printk(KERN_ERR "%s: Invalid priv->iw_mode in set_port_type()\n", - priv->ndev->name); - } -} - -/********************************************************************/ -/* Device methods */ -/********************************************************************/ - -int orinoco_open(struct net_device *dev) -{ - struct orinoco_private *priv = ndev_priv(dev); - unsigned long flags; - int err; - - if (orinoco_lock(priv, &flags) != 0) - return -EBUSY; - - err = __orinoco_up(priv); - - if (!err) - priv->open = 1; - - orinoco_unlock(priv, &flags); - - return err; -} -EXPORT_SYMBOL(orinoco_open); - -int orinoco_stop(struct net_device *dev) -{ - struct orinoco_private *priv = ndev_priv(dev); - int err = 0; - - /* We mustn't use orinoco_lock() here, because we need to be - able to close the interface even if hw_unavailable is set - (e.g. as we're released after a PC Card removal) */ - orinoco_lock_irq(priv); - - priv->open = 0; - - err = __orinoco_down(priv); - - orinoco_unlock_irq(priv); - - return err; -} -EXPORT_SYMBOL(orinoco_stop); - -void orinoco_set_multicast_list(struct net_device *dev) -{ - struct orinoco_private *priv = ndev_priv(dev); - unsigned long flags; - - if (orinoco_lock(priv, &flags) != 0) { - printk(KERN_DEBUG "%s: orinoco_set_multicast_list() " - "called when hw_unavailable\n", dev->name); - return; - } - - __orinoco_set_multicast_list(dev); - orinoco_unlock(priv, &flags); -} -EXPORT_SYMBOL(orinoco_set_multicast_list); - -int orinoco_change_mtu(struct net_device *dev, int new_mtu) -{ - struct orinoco_private *priv = ndev_priv(dev); - - /* MTU + encapsulation + header length */ - if ((new_mtu + ENCAPS_OVERHEAD + sizeof(struct ieee80211_hdr)) > - (priv->nicbuf_size - ETH_HLEN)) - return -EINVAL; - - dev->mtu = new_mtu; - - return 0; -} -EXPORT_SYMBOL(orinoco_change_mtu); - -/********************************************************************/ -/* Tx path */ -/********************************************************************/ - -/* Add encapsulation and MIC to the existing SKB. - * The main xmit routine will then send the whole lot to the card. - * Need 8 bytes headroom - * Need 8 bytes tailroom - * - * With encapsulated ethernet II frame - * -------- - * 803.3 header (14 bytes) - * dst[6] - * -------- src[6] - * 803.3 header (14 bytes) len[2] - * dst[6] 803.2 header (8 bytes) - * src[6] encaps[6] - * len[2] <- leave alone -> len[2] - * -------- -------- <-- 0 - * Payload Payload - * ... ... - * - * -------- -------- - * MIC (8 bytes) - * -------- - * - * returns 0 on success, -ENOMEM on error. - */ -int orinoco_process_xmit_skb(struct sk_buff *skb, - struct net_device *dev, - struct orinoco_private *priv, - int *tx_control, - u8 *mic_buf) -{ - struct orinoco_tkip_key *key; - struct ethhdr *eh; - int do_mic; - - key = (struct orinoco_tkip_key *) priv->keys[priv->tx_key].key; - - do_mic = ((priv->encode_alg == ORINOCO_ALG_TKIP) && - (key != NULL)); - - if (do_mic) - *tx_control |= (priv->tx_key << HERMES_MIC_KEY_ID_SHIFT) | - HERMES_TXCTRL_MIC; - - eh = (struct ethhdr *)skb->data; - - /* Encapsulate Ethernet-II frames */ - if (ntohs(eh->h_proto) > ETH_DATA_LEN) { /* Ethernet-II frame */ - struct header_struct { - struct ethhdr eth; /* 802.3 header */ - u8 encap[6]; /* 802.2 header */ - } __packed hdr; - int len = skb->len + sizeof(encaps_hdr) - (2 * ETH_ALEN); - - if (skb_headroom(skb) < ENCAPS_OVERHEAD) { - if (net_ratelimit()) - printk(KERN_ERR - "%s: Not enough headroom for 802.2 headers %d\n", - dev->name, skb_headroom(skb)); - return -ENOMEM; - } - - /* Fill in new header */ - memcpy(&hdr.eth, eh, 2 * ETH_ALEN); - hdr.eth.h_proto = htons(len); - memcpy(hdr.encap, encaps_hdr, sizeof(encaps_hdr)); - - /* Make room for the new header, and copy it in */ - eh = skb_push(skb, ENCAPS_OVERHEAD); - memcpy(eh, &hdr, sizeof(hdr)); - } - - /* Calculate Michael MIC */ - if (do_mic) { - size_t len = skb->len - ETH_HLEN; - u8 *mic = &mic_buf[0]; - - /* Have to write to an even address, so copy the spare - * byte across */ - if (skb->len % 2) { - *mic = skb->data[skb->len - 1]; - mic++; - } - - orinoco_mic(priv->tx_tfm_mic, key->tx_mic, - eh->h_dest, eh->h_source, 0 /* priority */, - skb->data + ETH_HLEN, - len, mic); - } - - return 0; -} -EXPORT_SYMBOL(orinoco_process_xmit_skb); - -static netdev_tx_t orinoco_xmit(struct sk_buff *skb, struct net_device *dev) -{ - struct orinoco_private *priv = ndev_priv(dev); - struct net_device_stats *stats = &dev->stats; - struct hermes *hw = &priv->hw; - int err = 0; - u16 txfid = priv->txfid; - int tx_control; - unsigned long flags; - u8 mic_buf[MICHAEL_MIC_LEN + 1]; - - if (!netif_running(dev)) { - printk(KERN_ERR "%s: Tx on stopped device!\n", - dev->name); - return NETDEV_TX_BUSY; - } - - if (netif_queue_stopped(dev)) { - printk(KERN_DEBUG "%s: Tx while transmitter busy!\n", - dev->name); - return NETDEV_TX_BUSY; - } - - if (orinoco_lock(priv, &flags) != 0) { - printk(KERN_ERR "%s: orinoco_xmit() called while hw_unavailable\n", - dev->name); - return NETDEV_TX_BUSY; - } - - if (!netif_carrier_ok(dev) || - (priv->iw_mode == NL80211_IFTYPE_MONITOR)) { - /* Oops, the firmware hasn't established a connection, - silently drop the packet (this seems to be the - safest approach). */ - goto drop; - } - - /* Check packet length */ - if (skb->len < ETH_HLEN) - goto drop; - - tx_control = HERMES_TXCTRL_TX_OK | HERMES_TXCTRL_TX_EX; - - err = orinoco_process_xmit_skb(skb, dev, priv, &tx_control, - &mic_buf[0]); - if (err) - goto drop; - - if (priv->has_alt_txcntl) { - /* WPA enabled firmwares have tx_cntl at the end of - * the 802.11 header. So write zeroed descriptor and - * 802.11 header at the same time - */ - char desc[HERMES_802_3_OFFSET]; - __le16 *txcntl = (__le16 *) &desc[HERMES_TXCNTL2_OFFSET]; - - memset(&desc, 0, sizeof(desc)); - - *txcntl = cpu_to_le16(tx_control); - err = hw->ops->bap_pwrite(hw, USER_BAP, &desc, sizeof(desc), - txfid, 0); - if (err) { - if (net_ratelimit()) - printk(KERN_ERR "%s: Error %d writing Tx " - "descriptor to BAP\n", dev->name, err); - goto busy; - } - } else { - struct hermes_tx_descriptor desc; - - memset(&desc, 0, sizeof(desc)); - - desc.tx_control = cpu_to_le16(tx_control); - err = hw->ops->bap_pwrite(hw, USER_BAP, &desc, sizeof(desc), - txfid, 0); - if (err) { - if (net_ratelimit()) - printk(KERN_ERR "%s: Error %d writing Tx " - "descriptor to BAP\n", dev->name, err); - goto busy; - } - - /* Clear the 802.11 header and data length fields - some - * firmwares (e.g. Lucent/Agere 8.xx) appear to get confused - * if this isn't done. */ - hermes_clear_words(hw, HERMES_DATA0, - HERMES_802_3_OFFSET - HERMES_802_11_OFFSET); - } - - err = hw->ops->bap_pwrite(hw, USER_BAP, skb->data, skb->len, - txfid, HERMES_802_3_OFFSET); - if (err) { - printk(KERN_ERR "%s: Error %d writing packet to BAP\n", - dev->name, err); - goto busy; - } - - if (tx_control & HERMES_TXCTRL_MIC) { - size_t offset = HERMES_802_3_OFFSET + skb->len; - size_t len = MICHAEL_MIC_LEN; - - if (offset % 2) { - offset--; - len++; - } - err = hw->ops->bap_pwrite(hw, USER_BAP, &mic_buf[0], len, - txfid, offset); - if (err) { - printk(KERN_ERR "%s: Error %d writing MIC to BAP\n", - dev->name, err); - goto busy; - } - } - - /* Finally, we actually initiate the send */ - netif_stop_queue(dev); - - err = hw->ops->cmd_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; - } - - 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, struct hermes *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, struct hermes *hw) -{ - dev->stats.tx_packets++; - - netif_wake_queue(dev); - - hermes_write_regn(hw, TXCOMPLFID, DUMMY_FID); -} - -static void __orinoco_ev_txexc(struct net_device *dev, struct hermes *hw) -{ - struct net_device_stats *stats = &dev->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 = hw->ops->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); -} - -void orinoco_tx_timeout(struct net_device *dev, unsigned int txqueue) -{ - struct orinoco_private *priv = ndev_priv(dev); - struct net_device_stats *stats = &dev->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); -} -EXPORT_SYMBOL(orinoco_tx_timeout); - -/********************************************************************/ -/* 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 = &dev->stats; - struct hermes *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 */ - skb_put_data(skb, &(desc->frame_ctl), hdrlen); - skb_reset_mac_header(skb); - - /* If any, copy the data from the card to the skb */ - if (datalen > 0) { - err = hw->ops->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++; -} - -void __orinoco_ev_rx(struct net_device *dev, struct hermes *hw) -{ - struct orinoco_private *priv = ndev_priv(dev); - struct net_device_stats *stats = &dev->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) - goto update_stats; - - rxfid = hermes_read_regn(hw, RXFID); - - err = hw->ops->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 = hw->ops->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) - 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); -} -EXPORT_SYMBOL(__orinoco_ev_rx); - -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 = &dev->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 = skb_push(skb, ETH_HLEN - ENCAPS_OVERHEAD); - } else { - /* 802.3 frame - prepend 802.3 header as is */ - hdr = 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(struct tasklet_struct *t) -{ - struct orinoco_private *priv = from_tasklet(priv, t, rx_tasklet); - 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; - } __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 = hw->ops->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 = hw->ops->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 = hw->ops->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 = hw->ops->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); - if (!sd) - return; - - 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); - if (!sd) - return; - - 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) { - - buf = sd->buf; - len = sd->len; - type = sd->type; - - list_del(&sd->list); - spin_unlock_irqrestore(&priv->scan_lock, flags); - 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 { - /* Either abort or complete the scan */ - orinoco_scan_done(priv, (len < 0)); - } - - spin_lock_irqsave(&priv->scan_lock, flags); - } - spin_unlock_irqrestore(&priv->scan_lock, flags); -} - -void __orinoco_ev_info(struct net_device *dev, struct hermes *hw) -{ - struct orinoco_private *priv = ndev_priv(dev); - u16 infofid; - struct { - __le16 len; - __le16 type; - } __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 = hw->ops->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 = hw->ops->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 = hw->ops->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; - } - fallthrough; - 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 = hw->ops->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 = hw->ops->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; - fallthrough; - 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; - } -} -EXPORT_SYMBOL(__orinoco_ev_info); - -static void __orinoco_ev_infdrop(struct net_device *dev, struct hermes *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); - } - - orinoco_scan_done(priv, true); - - /* 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 = hw->ops->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) || - (netdev_mc_count(dev) > MAX_MULTICAST(priv))) { - promisc = 1; - mc_count = 0; - } else { - promisc = 0; - mc_count = netdev_mc_count(dev); - } - - err = __orinoco_hw_set_multicast_list(priv, dev, 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 */ - orinoco_scan_done(priv, true); - - 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 */ - orinoco_lock_irq(priv); - - 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 - netif_trans_update(dev); - } - - orinoco_unlock_irq(priv); - - 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; - - /* If we've called commit, we are reconfiguring or bringing the - * interface up. Maintaining countermeasures across this would - * be confusing, so note that we've disabled them. The port will - * be enabled later in orinoco_commit or __orinoco_up. */ - priv->tkip_cm_active = 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; - struct hermes *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, struct hermes *hw) -{ - printk(KERN_DEBUG "%s: TICK\n", dev->name); -} - -static void __orinoco_ev_wterr(struct net_device *dev, struct hermes *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; - struct hermes *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); - struct hermes *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 = hw->ops->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) */ - orinoco_lock_irq(priv); - priv->hw_unavailable--; - orinoco_unlock_irq(priv); - - 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_rx_mode = 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, -}; - -/* 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_setup(&priv->rx_tasklet, orinoco_rx_isr_tasklet); - - 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, - const struct net_device_ops *ops) -{ - 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->watchdog_timeo = HZ; /* 1 second timeout */ - dev->wireless_handlers = &orinoco_handler_def; -#ifdef WIRELESS_SPY - dev->wireless_data = &priv->wireless_data; -#endif - /* Default to standard ops if not set */ - if (ops) - dev->netdev_ops = ops; - else - dev->netdev_ops = &orinoco_netdev_ops; - - /* we use the default eth_mac_addr for setting the MAC addr */ - - /* Reserve space in skb for the SNAP header */ - dev->needed_headroom = ENCAPS_OVERHEAD; - - netif_carrier_off(dev); - - eth_hw_addr_set(dev, wiphy->perm_addr); - - dev->base_addr = base_addr; - dev->irq = irq; - - dev->min_mtu = ORINOCO_MIN_MTU; - dev->max_mtu = ORINOCO_MAX_MTU; - - 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, "Registered 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; - - /* 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) - 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; - - priv->hw.ops->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: - priv->hw.ops->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; - - priv->hw.ops->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++; - priv->hw.ops->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); |