802.11 device management More...

#include <string.h>
#include <byteswap.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <ipxe/settings.h>
#include <ipxe/if_arp.h>
#include <ipxe/ethernet.h>
#include <ipxe/ieee80211.h>
#include <ipxe/netdevice.h>
#include <ipxe/net80211.h>
#include <ipxe/sec80211.h>
#include <ipxe/timer.h>
#include <ipxe/nap.h>
#include <ipxe/errortab.h>
#include <ipxe/net80211_err.h>

Data Structures
struct	net80211_rx_info
	Information associated with a received management packet. More...

struct	net80211_probe_ctx
	Context for a probe operation. More...

struct	net80211_assoc_ctx
	Context for the association task. More...

Macros
#define	NET80211_PROBE_GATHER 1
	Seconds to wait after finding a network, to possibly find better APs for it. More...

#define	NET80211_PROBE_GATHER_ALL 2
	Seconds to wait after finding a network, to possibly find other networks. More...

#define	NET80211_PROBE_TIMEOUT 6
	Seconds to allow a probe to take if no network has been found. More...

#define	ASSOC_TIMEOUT TICKS_PER_SEC
	Number of ticks to wait for replies to association management frames. More...

#define	ASSOC_RETRIES 2
	Number of times to try sending a particular association management frame. More...

#define	LQ_SMOOTH 7
	Smoothing factor (1-7) for link quality calculation. More...

Functions
	FILE_LICENCE (GPL2_OR_LATER)

__weak int	sec80211_detect (struct io_buffer iob __unused, enum net80211_security_proto secprot __unused, enum net80211_crypto_alg *crypt __unused)
	Detect secure 802.11 network when security support is not available. More...

static int	net80211_netdev_open (struct net_device *netdev)
	Open 802.11 device and start association. More...

static void	net80211_netdev_close (struct net_device *netdev)
	Close 802.11 device. More...

static int	net80211_netdev_transmit (struct net_device netdev, struct io_buffer iobuf)
	Transmit packet on 802.11 device. More...

static void	net80211_netdev_poll (struct net_device *netdev)
	Poll 802.11 device for received packets and completed transmissions. More...

static void	net80211_netdev_irq (struct net_device *netdev, int enable)
	Enable or disable interrupts for 802.11 device. More...

static int	net80211_ll_push (struct net_device netdev, struct io_buffer iobuf, const void ll_dest, const void ll_source, uint16_t net_proto)
	Add 802.11 link-layer header. More...

static int	net80211_ll_pull (struct net_device netdev, struct io_buffer iobuf, const void ll_dest, const void ll_source, uint16_t net_proto, unsigned int flags)

static void	net80211_add_channels (struct net80211_device *dev, int start, int len, int txpower)
	Add channels to 802.11 device. More...

static void	net80211_filter_hw_channels (struct net80211_device *dev)
	Filter 802.11 device channels for hardware capabilities. More...

static void	net80211_set_rtscts_rate (struct net80211_device *dev)
	Pick TX rate for RTS/CTS packets based on data rate. More...

static int	net80211_process_capab (struct net80211_device *dev, u16 capab)
	Update 802.11 device state to reflect received capabilities field. More...

static int	net80211_process_ie (struct net80211_device dev, union ieee80211_ie ie, void *ie_end)
	Update 802.11 device state to reflect received information elements. More...

static union ieee80211_ie *	net80211_marshal_request_info (struct net80211_device dev, union ieee80211_ie ie)
	Create information elements for outgoing probe or association packet. More...

static void	net80211_step_associate (struct net80211_device *dev)
	Step 802.11 association process. More...

static void	net80211_handle_auth (struct net80211_device dev, struct io_buffer iob)
	Handle receipt of 802.11 authentication frame. More...

static void	net80211_handle_assoc_reply (struct net80211_device dev, struct io_buffer iob)
	Handle receipt of 802.11 association reply frame. More...

static int	net80211_send_disassoc (struct net80211_device *dev, int reason, int deauth)
	Send 802.11 disassociation frame. More...

static void	net80211_handle_mgmt (struct net80211_device dev, struct io_buffer iob, int signal)
	Handle receipt of 802.11 management frame. More...

static void	net80211_free_frags (struct net80211_device *dev, int fcid)
	Free buffers used by 802.11 fragment cache entry. More...

static struct io_buffer *	net80211_accum_frags (struct net80211_device *dev, int fcid, int nfrags, int size)
	Accumulate 802.11 fragments into one I/O buffer. More...

static void	net80211_rx_frag (struct net80211_device dev, struct io_buffer iob, int signal)
	Handle receipt of 802.11 fragment. More...

static int	net80211_check_settings_update (void)
	Check for 802.11 SSID or key updates. More...

const struct setting net80211_ssid_setting	__setting (SETTING_NETDEV_EXTRA, ssid)
	The network name to associate with. More...

const struct setting net80211_active_setting	__setting (SETTING_NETDEV_EXTRA, active-scan)
	Whether to use active scanning. More...

const struct setting net80211_key_setting	__setting (SETTING_NETDEV_EXTRA, key)
	The cryptographic key to use. More...

static int	net80211_rate_is_erp (u16 rate)
	Determine whether a transmission rate uses ERP/OFDM. More...

u16	net80211_duration (struct net80211_device *dev, int bytes, u16 rate)
	Calculate one frame's contribution to 802.11 duration field. More...

static int	net80211_ll_pull (struct net_device netdev __unused, struct io_buffer iobuf, const void ll_dest, const void ll_source, uint16_t net_proto, unsigned int flags)
	Remove 802.11 link-layer header. More...

struct net80211_device *	net80211_get (struct net_device *netdev)
	Get 802.11 device from wrapping network device. More...

int	net80211_keep_mgmt (struct net80211_device *dev, int enable)
	Set state of 802.11 device keeping management frames. More...

struct io_buffer *	net80211_mgmt_dequeue (struct net80211_device dev, int signal)
	Get 802.11 management frame. More...

int	net80211_tx_mgmt (struct net80211_device dev, u16 fc, u8 dest[6], struct io_buffer iob)
	Transmit 802.11 management frame. More...

struct net80211_device *	net80211_alloc (size_t priv_size)
	Allocate 802.11 device. More...

int	net80211_register (struct net80211_device dev, struct net80211_device_operations ops, struct net80211_hw_info *hw)
	Register 802.11 device with network stack. More...

void	net80211_unregister (struct net80211_device *dev)
	Unregister 802.11 device from network stack. More...

void	net80211_free (struct net80211_device *dev)
	Free 802.11 device. More...

static void	net80211_set_state (struct net80211_device *dev, short clear, short set, u16 status)
	Set state of 802.11 device. More...

struct net80211_probe_ctx *	net80211_probe_start (struct net80211_device dev, const char essid, int active)
	Begin probe of 802.11 networks. More...

int	net80211_probe_step (struct net80211_probe_ctx *ctx)
	Continue probe of 802.11 networks. More...

struct net80211_wlan *	net80211_probe_finish_best (struct net80211_probe_ctx *ctx)
	Finish probe of 802.11 networks, returning best-signal network found. More...

struct list_head *	net80211_probe_finish_all (struct net80211_probe_ctx *ctx)
	Finish probe of 802.11 networks, returning all networks found. More...

void	net80211_free_wlan (struct net80211_wlan *wlan)
	Free WLAN structure. More...

void	net80211_free_wlanlist (struct list_head *list)
	Free list of WLAN structures. More...

void	net80211_autoassociate (struct net80211_device *dev)
	Start 802.11 association process. More...

void	net80211_set_rate_idx (struct net80211_device *dev, int rate)
	Set data transmission rate for 802.11 device. More...

int	net80211_change_channel (struct net80211_device *dev, int channel)
	Configure 802.11 device to transmit on a certain channel. More...

int	net80211_prepare_probe (struct net80211_device *dev, int band, int active)
	Prepare 802.11 device channel and rate set for scanning. More...

int	net80211_prepare_assoc (struct net80211_device dev, struct net80211_wlan wlan)
	Prepare 802.11 device channel and rate set for communication. More...

int	net80211_send_auth (struct net80211_device dev, struct net80211_wlan wlan, int method)
	Send 802.11 initial authentication frame. More...

int	net80211_send_assoc (struct net80211_device dev, struct net80211_wlan wlan)
	Send 802.11 association frame. More...

void	net80211_deauthenticate (struct net80211_device *dev, int rc)
	Deauthenticate from current network and try again. More...

static void	net80211_update_link_quality (struct net80211_device dev, struct io_buffer iob)
	Update link quality information based on received beacon. More...

void	net80211_rx (struct net80211_device dev, struct io_buffer iob, int signal, u16 rate)
	Handle receipt of 802.11 frame. More...

void	net80211_rx_err (struct net80211_device dev, struct io_buffer iob, int rc)
	Indicate an error in receiving a packet. More...

void	net80211_tx_complete (struct net80211_device dev, struct io_buffer iob, int retries, int rc)
	Indicate the completed transmission of a packet. More...

	REQUIRING_SYMBOL (net80211_ll_protocol)

	REQUIRE_OBJECT (config_net80211)

Variables
static struct list_head	net80211_devices = LIST_HEAD_INIT ( net80211_devices )
	List of 802.11 devices. More...

static struct net80211_device_operations	net80211_null_ops
	Set of device operations that does nothing. More...

struct settings_applicator net80211_applicator	__settings_applicator
	802.11 settings applicator More...

static struct net_device_operations	net80211_netdev_ops
	Network device operations for a wrapped 802.11 device. More...

static struct ll_protocol net80211_ll_protocol	__ll_protocol
	802.11 link-layer protocol More...

static struct process_descriptor	net80211_process_desc
	802.11 association process descriptor More...

struct errortab common_wireless_errors []	__errortab
	Common 802.11 errors. More...

Detailed Description

802.11 device management

Definition in file net80211.c.

Macro Definition Documentation

◆ NET80211_PROBE_GATHER

#define NET80211_PROBE_GATHER 1

Seconds to wait after finding a network, to possibly find better APs for it.

This is used when a specific SSID to scan for is specified.

Definition at line 1259 of file net80211.c.

◆ NET80211_PROBE_GATHER_ALL

#define NET80211_PROBE_GATHER_ALL 2

Seconds to wait after finding a network, to possibly find other networks.

This is used when an empty SSID is specified, to scan for all networks.

Definition at line 1266 of file net80211.c.

◆ NET80211_PROBE_TIMEOUT

#define NET80211_PROBE_TIMEOUT 6

Seconds to allow a probe to take if no network has been found.

Definition at line 1269 of file net80211.c.

◆ ASSOC_TIMEOUT

#define ASSOC_TIMEOUT TICKS_PER_SEC

Number of ticks to wait for replies to association management frames.

Definition at line 1636 of file net80211.c.

◆ ASSOC_RETRIES

#define ASSOC_RETRIES 2

Number of times to try sending a particular association management frame.

Definition at line 1639 of file net80211.c.

◆ LQ_SMOOTH

#define LQ_SMOOTH 7

Smoothing factor (1-7) for link quality calculation.

Definition at line 2401 of file net80211.c.

Function Documentation

◆ FILE_LICENCE()

FILE_LICENCE ( GPL2_OR_LATER )

◆ sec80211_detect()

__weak int sec80211_detect	(	struct io_buffer *iob	__unused,
		enum net80211_security_proto *secprot	__unused,
		enum net80211_crypto_alg *crypt	__unused
	)

Detect secure 802.11 network when security support is not available.

Returns: -ENOTSUP, always.

Definition at line 112 of file net80211.c.

                                                                         {
         return -ENOTSUP;
 }

References ENOTSUP.

Referenced by net80211_probe_step().

◆ net80211_rate_is_erp()

static int net80211_rate_is_erp ( u16 rate )

inlinestatic

Determine whether a transmission rate uses ERP/OFDM.

Parameters

rate	Rate in 100 kbps units

Return values

is_erp TRUE if the rate is an ERP/OFDM rate

802.11b supports rates of 1.0, 2.0, 5.5, and 11.0 Mbps; any other rate than these on the 2.4GHz spectrum is an ERP (802.11g) rate.

Definition at line 399 of file net80211.c.

 {
         if ( rate == 10 || rate == 20 || rate == 55 || rate == 110 )
                 return 0;
         return 1;
 }

Referenced by net80211_duration().

◆ net80211_ll_pull()

static int net80211_ll_pull	(	struct net_device *netdev	__unused,
		struct io_buffer *	iobuf,
		const void **	ll_dest,
		const void **	ll_source,
		uint16_t *	net_proto,
		unsigned int *	flags
	)

static

Remove 802.11 link-layer header.

Parameters

netdev	Wrapping network device
iobuf	I/O buffer

Return values

ll_dest	Link-layer destination address
ll_source	Link-layer source
net_proto	Network-layer protocol, in network byte order
flags	Packet flags
rc	Return status code

This expects and removes both the 802.11 frame header and the 802.2 LLC/SNAP header that are used on data packets.

Definition at line 537 of file net80211.c.

 {
         struct ieee80211_frame *hdr = iobuf->data;
         struct ieee80211_llc_snap_header *lhdr =
                 ( void * ) hdr + IEEE80211_TYP_FRAME_HEADER_LEN;
 
         /* Bunch of sanity checks */
         if ( iob_len ( iobuf ) < IEEE80211_TYP_FRAME_HEADER_LEN +
              IEEE80211_LLC_HEADER_LEN ) {
                 DBGC ( netdev->priv, "802.11 %p packet too short (%zd bytes)\n",
                        netdev->priv, iob_len ( iobuf ) );
                 return -EINVAL_PKT_TOO_SHORT;
         }
 
         if ( ( hdr->fc & IEEE80211_FC_VERSION ) != IEEE80211_THIS_VERSION ) {
                 DBGC ( netdev->priv, "802.11 %p packet invalid version %04x\n",
                        netdev->priv, hdr->fc & IEEE80211_FC_VERSION );
                 return -EINVAL_PKT_VERSION;
         }
 
         if ( ( hdr->fc & IEEE80211_FC_TYPE ) != IEEE80211_TYPE_DATA ||
              ( hdr->fc & IEEE80211_FC_SUBTYPE ) != IEEE80211_STYPE_DATA ) {
                 DBGC ( netdev->priv, "802.11 %p packet not data/data (fc=%04x)\n",
                        netdev->priv, hdr->fc );
                 return -EINVAL_PKT_NOT_DATA;
         }
 
         if ( ( hdr->fc & ( IEEE80211_FC_TODS | IEEE80211_FC_FROMDS ) ) !=
              IEEE80211_FC_FROMDS ) {
                 DBGC ( netdev->priv, "802.11 %p packet not from DS (fc=%04x)\n",
                        netdev->priv, hdr->fc );
                 return -EINVAL_PKT_NOT_FROMDS;
         }
 
         if ( lhdr->dsap != IEEE80211_LLC_DSAP || lhdr->ssap != IEEE80211_LLC_SSAP ||
              lhdr->ctrl != IEEE80211_LLC_CTRL || lhdr->oui[0] || lhdr->oui[1] ||
              lhdr->oui[2] ) {
                 DBGC ( netdev->priv, "802.11 %p LLC header is not plain EtherType "
                        "encapsulator: %02x->%02x [%02x] %02x:%02x:%02x %04x\n",
                        netdev->priv, lhdr->dsap, lhdr->ssap, lhdr->ctrl,
                        lhdr->oui[0], lhdr->oui[1], lhdr->oui[2], lhdr->ethertype );
                 return -EINVAL_PKT_LLC_HEADER;
         }
 
         iob_pull ( iobuf, sizeof ( *hdr ) + sizeof ( *lhdr ) );
 
         *ll_dest = hdr->addr1;
         *ll_source = hdr->addr3;
         *net_proto = lhdr->ethertype;
         *flags = ( ( is_multicast_ether_addr ( hdr->addr1 ) ?
                      LL_MULTICAST : 0 ) |
                    ( is_broadcast_ether_addr ( hdr->addr1 ) ?
                      LL_BROADCAST : 0 ) );
         return 0;
 }

References ieee80211_llc_snap_header::ctrl, io_buffer::data, DBGC, ieee80211_llc_snap_header::dsap, EINVAL_PKT_LLC_HEADER, EINVAL_PKT_NOT_DATA, EINVAL_PKT_NOT_FROMDS, EINVAL_PKT_TOO_SHORT, EINVAL_PKT_VERSION, ieee80211_llc_snap_header::ethertype, flags, hdr, IEEE80211_FC_FROMDS, IEEE80211_FC_SUBTYPE, IEEE80211_FC_TODS, IEEE80211_FC_TYPE, IEEE80211_FC_VERSION, IEEE80211_LLC_CTRL, IEEE80211_LLC_DSAP, IEEE80211_LLC_HEADER_LEN, IEEE80211_LLC_SSAP, IEEE80211_STYPE_DATA, IEEE80211_THIS_VERSION, IEEE80211_TYP_FRAME_HEADER_LEN, IEEE80211_TYPE_DATA, iob_len(), iob_pull, is_broadcast_ether_addr(), is_multicast_ether_addr(), LL_BROADCAST, LL_MULTICAST, netdev, ieee80211_llc_snap_header::oui, net_device::priv, and ieee80211_llc_snap_header::ssap.

◆ net80211_tx_mgmt()

int net80211_tx_mgmt	(	struct net80211_device *	dev,
		u16	fc,
		u8	dest[6],
		struct io_buffer *	iob
	)

Transmit 802.11 management frame.

Parameters

dev	802.11 device
fc	Frame Control flags for management frame
dest	Destination access point
iob	I/O buffer

Return values

rc	Return status code

The fc argument must contain at least an IEEE 802.11 management subtype number (e.g. IEEE80211_STYPE_PROBE_REQ). If it contains IEEE80211_FC_PROTECTED, the frame will be encrypted prior to transmission.

It is required that iob have at least 24 bytes of headroom reserved before its data start.

Definition at line 706 of file net80211.c.

 {
         struct ieee80211_frame *hdr = iob_push ( iob,
                                                  IEEE80211_TYP_FRAME_HEADER_LEN );
 
         hdr->fc = IEEE80211_THIS_VERSION | IEEE80211_TYPE_MGMT |
             ( fc & ~IEEE80211_FC_PROTECTED );
         hdr->duration = net80211_duration ( dev, 10, dev->rates[dev->rate] );
         hdr->seq = IEEE80211_MAKESEQ ( ++dev->last_tx_seqnr, 0 );
 
         memcpy ( hdr->addr1, dest, ETH_ALEN );  /* DA = RA */
         memcpy ( hdr->addr2, dev->netdev->ll_addr, ETH_ALEN );  /* SA = TA */
         memcpy ( hdr->addr3, dest, ETH_ALEN );  /* BSSID */
 
         if ( fc & IEEE80211_FC_PROTECTED ) {
                 if ( ! dev->crypto )
                         return -EINVAL_CRYPTO_REQUEST;
 
                 struct io_buffer *eiob = dev->crypto->encrypt ( dev->crypto,
                                                                 iob );
                 free_iob ( iob );
                 iob = eiob;
         }
 
         return netdev_tx ( dev->netdev, iob );
 }

References net80211_device::crypto, dest, EINVAL_CRYPTO_REQUEST, net80211_crypto::encrypt, ETH_ALEN, fc, free_iob(), hdr, IEEE80211_FC_PROTECTED, IEEE80211_MAKESEQ, IEEE80211_THIS_VERSION, IEEE80211_TYP_FRAME_HEADER_LEN, IEEE80211_TYPE_MGMT, iob_push, net80211_device::last_tx_seqnr, net_device::ll_addr, memcpy(), net80211_duration(), net80211_device::netdev, netdev_tx(), net80211_device::rate, and net80211_device::rates.

Referenced by net80211_probe_step(), net80211_send_assoc(), net80211_send_auth(), and net80211_send_disassoc().

◆ net80211_set_state()

static void net80211_set_state	(	struct net80211_device *	dev,
		short	clear,
		short	set,
		u16	status
	)

inlinestatic

Set state of 802.11 device.

Parameters

dev	802.11 device
clear	Bitmask of flags to clear
set	Bitmask of flags to set
status	Status or reason code for most recent operation

If status represents a reason code, it should be OR'ed with NET80211_IS_REASON.

Clearing authentication also clears association; clearing association also clears security handshaking state. Clearing association removes the link-up flag from the wrapping net_device, but setting it does not automatically set the flag; that is left to the judgment of higher-level code.

Definition at line 866 of file net80211.c.

 {
         /* The conditions in this function are deliberately formulated
            to be decidable at compile-time in most cases. Since clear
            and set are generally passed as constants, the body of this
            function can be reduced down to a few statements by the
            compiler. */
 
         const int statmsk = NET80211_STATUS_MASK | NET80211_IS_REASON;
 
         if ( clear & NET80211_PROBED )
                 clear |= NET80211_AUTHENTICATED;
 
         if ( clear & NET80211_AUTHENTICATED )
                 clear |= NET80211_ASSOCIATED;
 
         if ( clear & NET80211_ASSOCIATED )
                 clear |= NET80211_CRYPTO_SYNCED;
 
         dev->state = ( dev->state & ~clear ) | set;
         dev->state = ( dev->state & ~statmsk ) | ( status & statmsk );
 
         if ( clear & NET80211_ASSOCIATED )
                 netdev_link_down ( dev->netdev );
 
         if ( ( clear | set ) & NET80211_ASSOCIATED )
                 dev->op->config ( dev, NET80211_CFG_ASSOC );
 
         if ( status != 0 ) {
                 if ( status & NET80211_IS_REASON )
                         dev->assoc_rc = -E80211_REASON ( status );
                 else
                         dev->assoc_rc = -E80211_STATUS ( status );
                 netdev_link_err ( dev->netdev, dev->assoc_rc );
         }
 }

References clear, net_device::dev, E80211_REASON, E80211_STATUS, NET80211_ASSOCIATED, NET80211_AUTHENTICATED, NET80211_CFG_ASSOC, NET80211_CRYPTO_SYNCED, NET80211_IS_REASON, NET80211_PROBED, NET80211_STATUS_MASK, netdev_link_down(), netdev_link_err(), set, and status.

Referenced by net80211_autoassociate(), net80211_handle_assoc_reply(), net80211_handle_auth(), net80211_handle_mgmt(), net80211_prepare_assoc(), net80211_send_assoc(), net80211_send_auth(), and net80211_send_disassoc().

◆ net80211_update_link_quality()

static void net80211_update_link_quality	(	struct net80211_device *	dev,
		struct io_buffer *	iob
	)

static

Update link quality information based on received beacon.

Parameters

dev	802.11 device
iob	I/O buffer containing beacon

Return values

rc	Return status code

Definition at line 2410 of file net80211.c.

 {
         struct ieee80211_frame *hdr = iob->data;
         struct ieee80211_beacon *beacon;
         u32 dt, rxi;
 
         if ( ! ( dev->state & NET80211_ASSOCIATED ) )
                 return;
 
         beacon = ( struct ieee80211_beacon * ) hdr->data;
         dt = ( u32 ) ( beacon->timestamp - dev->last_beacon_timestamp );
         rxi = dev->rx_beacon_interval;
 
         rxi = ( LQ_SMOOTH * rxi ) + ( ( 8 - LQ_SMOOTH ) * dt );
         dev->rx_beacon_interval = rxi >> 3;
 
         dev->last_beacon_timestamp = beacon->timestamp;
 }

References io_buffer::data, hdr, ieee80211_beacon, net80211_device::last_beacon_timestamp, LQ_SMOOTH, NET80211_ASSOCIATED, net80211_device::rx_beacon_interval, and net80211_device::state.

Referenced by net80211_handle_mgmt().

◆ REQUIRING_SYMBOL()

REQUIRING_SYMBOL ( net80211_ll_protocol )

◆ REQUIRE_OBJECT()

REQUIRE_OBJECT ( config_net80211 )

Variable Documentation

◆ net80211_devices

struct list_head net80211_devices = LIST_HEAD_INIT ( net80211_devices )

static

List of 802.11 devices.

Definition at line 47 of file net80211.c.

Referenced by net80211_check_settings_update(), net80211_get(), and net80211_register().

◆ net80211_null_ops

struct net80211_device_operations net80211_null_ops

static

Set of device operations that does nothing.

Definition at line 50 of file net80211.c.

Referenced by net80211_alloc(), net80211_netdev_open(), and net80211_unregister().

◆ net80211_netdev_ops

struct net_device_operations net80211_netdev_ops

static

Initial value:

= {
        .open = net80211_netdev_open,
        .close = net80211_netdev_close,
        .transmit = net80211_netdev_transmit,
        .poll = net80211_netdev_poll,
        .irq = net80211_netdev_irq,
}

Network device operations for a wrapped 802.11 device.

Definition at line 379 of file net80211.c.

Referenced by net80211_alloc().

◆ __ll_protocol

struct ll_protocol net80211_ll_protocol __ll_protocol

static

Initial value:

= {
        .name = "802.11",
        .push = net80211_ll_push,
        .pull = net80211_ll_pull,
        .init_addr = eth_init_addr,
        .ntoa = eth_ntoa,
        .mc_hash = eth_mc_hash,
        .eth_addr = eth_eth_addr,
        .eui64 = eth_eui64,
        .ll_proto = htons ( ARPHRD_ETHER ),     
        .hw_addr_len = ETH_ALEN,
        .ll_addr_len = ETH_ALEN,
        .ll_header_len = IEEE80211_TYP_FRAME_HEADER_LEN +
                                IEEE80211_LLC_HEADER_LEN,
}

802.11 link-layer protocol

Definition at line 597 of file net80211.c.

◆ net80211_process_desc

struct process_descriptor net80211_process_desc

static

Initial value:

=
        PROC_DESC ( struct net80211_device, proc_assoc,
                    net80211_step_associate )

802.11 association process descriptor

Definition at line 738 of file net80211.c.

Referenced by net80211_alloc().

◆ __errortab

struct errortab common_wireless_errors [] __errortab

Initial value:

= {
        __einfo_errortab ( EINFO_EINVAL_CRYPTO_REQUEST ),
        __einfo_errortab ( EINFO_ECONNRESET_UNSPECIFIED ),
        __einfo_errortab ( EINFO_ECONNRESET_INACTIVITY ),
        __einfo_errortab ( EINFO_ECONNRESET_4WAY_TIMEOUT ),
        __einfo_errortab ( EINFO_ECONNRESET_8021X_FAILURE ),
        __einfo_errortab ( EINFO_ECONNREFUSED_FAILURE ),
        __einfo_errortab ( EINFO_ECONNREFUSED_ASSOC_DENIED ),
        __einfo_errortab ( EINFO_ECONNREFUSED_AUTH_ALGO_UNSUPP ),
}

Common 802.11 errors.

Definition at line 2820 of file net80211.c.

Data Structures

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ NET80211_PROBE_GATHER

◆ NET80211_PROBE_GATHER_ALL

◆ NET80211_PROBE_TIMEOUT

◆ ASSOC_TIMEOUT

◆ ASSOC_RETRIES

◆ LQ_SMOOTH

Function Documentation

◆ FILE_LICENCE()

◆ sec80211_detect()

◆ net80211_rate_is_erp()

◆ net80211_ll_pull()

◆ net80211_tx_mgmt()

◆ net80211_set_state()

◆ net80211_update_link_quality()

◆ REQUIRING_SYMBOL()

◆ REQUIRE_OBJECT()

Variable Documentation

◆ net80211_devices

◆ net80211_null_ops

◆ net80211_netdev_ops

◆ __ll_protocol

◆ net80211_process_desc

◆ __errortab