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madwifi/net80211/ieee80211_proto.h

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/*-
* Copyright (c) 2001 Atsushi Onoe
* Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $Id$
*/
#ifndef _NET80211_IEEE80211_PROTO_H_
#define _NET80211_IEEE80211_PROTO_H_
/*
* 802.11 protocol implementation definitions.
*/
enum ieee80211_state {
IEEE80211_S_INIT = 0, /* default state */
IEEE80211_S_SCAN = 1, /* scanning */
IEEE80211_S_AUTH = 2, /* try to authenticate */
IEEE80211_S_ASSOC = 3, /* try to assoc */
IEEE80211_S_RUN = 4, /* associated */
};
#define IEEE80211_S_MAX (IEEE80211_S_RUN + 1)
#define IEEE80211_SEND_MGMT(_ni,_type,_arg) \
((*(_ni)->ni_ic->ic_send_mgmt)(_ni, _type, _arg))
extern const char *ieee80211_mgt_subtype_name[];
extern const char *ieee80211_ctl_subtype_name[];
extern const char *ieee80211_state_name[IEEE80211_S_MAX];
extern const char *ieee80211_wme_acnames[];
extern const char *ieee80211_phymode_name[];
extern const char *ieee80211_opmode_name[];
void ieee80211_proto_attach(struct ieee80211com *);
void ieee80211_proto_detach(struct ieee80211com *);
void ieee80211_proto_vattach(struct ieee80211vap *);
void ieee80211_proto_vdetach(struct ieee80211vap *);
struct ieee80211_node;
struct ieee80211_channel *ieee80211_doth_findchan(struct ieee80211vap *, u_int8_t);
int ieee80211_input(struct ieee80211vap *, struct ieee80211_node *, struct sk_buff *, int, u_int64_t);
int ieee80211_input_all(struct ieee80211com *, struct sk_buff *, int, u_int64_t);
int ieee80211_setup_rates(struct ieee80211_node *, const u_int8_t *,
const u_int8_t *, int);
void ieee80211_saveie(u_int8_t **, const u_int8_t *);
void ieee80211_saveath(struct ieee80211_node *, u_int8_t *);
int ieee80211_recv_mgmt(struct ieee80211vap *, struct ieee80211_node *,
struct sk_buff *, int, int, u_int64_t);
void ieee80211_sta_pwrsave(struct ieee80211vap *, int);
int ieee80211_hardstart(struct sk_buff *, struct net_device *);
void ieee80211_parent_queue_xmit(struct sk_buff *);
int ieee80211_send_nulldata(struct ieee80211_node *);
int ieee80211_send_qosnulldata(struct ieee80211_node *, int);
int ieee80211_send_mgmt(struct ieee80211_node *, int, int);
int ieee80211_send_probereq(struct ieee80211_node *,
const u_int8_t sa[IEEE80211_ADDR_LEN],
const u_int8_t da[IEEE80211_ADDR_LEN],
const u_int8_t bssid[IEEE80211_ADDR_LEN],
const u_int8_t *, size_t, const void *, size_t);
struct sk_buff *ieee80211_encap(struct ieee80211_node *, struct sk_buff *, int *);
void ieee80211_reset_erp(struct ieee80211com *, enum ieee80211_phymode);
void ieee80211_set_shortslottime(struct ieee80211com *, int);
int ieee80211_iserp_rateset(struct ieee80211com *, struct ieee80211_rateset *);
void ieee80211_set11gbasicrates(struct ieee80211_rateset *, enum ieee80211_phymode);
enum ieee80211_phymode ieee80211_get11gbasicrates(struct ieee80211_rateset *);
void ieee80211_send_pspoll(struct ieee80211_node *);
void ieee80211_check_mic(struct ieee80211_node *, struct sk_buff *);
/*
* Return the size of the 802.11 header for a management or data frame.
*/
static __inline int
ieee80211_hdrsize(const void *data)
{
const struct ieee80211_frame *wh = data;
int size = sizeof(struct ieee80211_frame);
/* NB: we don't handle control frames */
KASSERT((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_CTL,
("%s: control frame", __func__));
if ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS)
size += IEEE80211_ADDR_LEN;
if (IEEE80211_QOS_HAS_SEQ(wh))
size += sizeof(u_int16_t);
return size;
}
/*
* Like ieee80211_hdrsize, but handles any type of frame.
*/
static __inline int
ieee80211_anyhdrsize(const void *data)
{
const struct ieee80211_frame *wh = data;
if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL) {
switch (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) {
case IEEE80211_FC0_SUBTYPE_CTS:
case IEEE80211_FC0_SUBTYPE_ACK:
return sizeof(struct ieee80211_frame_ack);
break;
default:
return sizeof(struct ieee80211_frame_min);
break;
}
} else
return ieee80211_hdrsize(data);
}
/*
* Template for an in-kernel authenticator. Authenticators
* register with the protocol code and are typically loaded
* as separate modules as needed.
*/
struct ieee80211_authenticator {
const char *ia_name; /* printable name */
int (*ia_attach)(struct ieee80211vap *);
void (*ia_detach)(struct ieee80211vap *);
void (*ia_node_join)(struct ieee80211_node *);
void (*ia_node_leave)(struct ieee80211_node *);
};
void ieee80211_authenticator_register(int, const struct ieee80211_authenticator *);
void ieee80211_authenticator_unregister(int);
const struct ieee80211_authenticator *ieee80211_authenticator_get(int);
struct eapolcom;
/*
* Template for an in-kernel authenticator backend. Backends
* register with the protocol code and are typically loaded
* as separate modules as needed.
*/
struct ieee80211_authenticator_backend {
const char *iab_name; /* printable name */
int (*iab_attach)(struct eapolcom *);
void (*iab_detach)(struct eapolcom *);
};
void ieee80211_authenticator_backend_register(
const struct ieee80211_authenticator_backend *);
void ieee80211_authenticator_backend_unregister(
const struct ieee80211_authenticator_backend *);
const struct ieee80211_authenticator_backend *
ieee80211_authenticator_backend_get(const char *);
/*
* Template for an MAC ACL policy module. Such modules
* register with the protocol code and are passed the sender's
* address of each received frame for validation.
*/
struct ieee80211_aclator {
const char *iac_name; /* printable name */
int (*iac_attach)(struct ieee80211vap *);
void (*iac_detach)(struct ieee80211vap *);
int (*iac_check)(struct ieee80211vap *,
const u_int8_t mac[IEEE80211_ADDR_LEN]);
int (*iac_add)(struct ieee80211vap *,
const u_int8_t mac[IEEE80211_ADDR_LEN]);
int (*iac_remove)(struct ieee80211vap *,
const u_int8_t mac[IEEE80211_ADDR_LEN]);
int (*iac_flush)(struct ieee80211vap *);
int (*iac_setpolicy)(struct ieee80211vap *, int);
int (*iac_getpolicy)(struct ieee80211vap *);
};
void ieee80211_aclator_register(const struct ieee80211_aclator *);
void ieee80211_aclator_unregister(const struct ieee80211_aclator *);
const struct ieee80211_aclator *ieee80211_aclator_get(const char *name);
/* flags for ieee80211_fix_rate() */
#define IEEE80211_F_DOSORT 0x00000001 /* sort rate list */
#define IEEE80211_F_DOFRATE 0x00000002 /* use fixed rate */
#define IEEE80211_F_DONEGO 0x00000004 /* calc negotiated rate */
#define IEEE80211_F_DODEL 0x00000008 /* delete ignore rate */
int ieee80211_fix_rate(struct ieee80211_node *, int);
struct wmeParams {
u_int8_t wmep_acm; /* ACM parameter */
u_int8_t wmep_aifsn; /* AIFSN parameters */
u_int8_t wmep_logcwmin; /* cwmin in exponential form */
u_int8_t wmep_logcwmax; /* cwmax in exponential form */
u_int16_t wmep_txopLimit; /* txopLimit */
u_int8_t wmep_noackPolicy; /* No-Ack Policy: 0=ack, 1=no-ack */
};
#define IEEE80211_EXPONENT_TO_VALUE(_exp) (1 << (u_int32_t)(_exp)) - 1
#define IEEE80211_TXOP_TO_US(_txop) (u_int32_t)(_txop) << 5
#define IEEE80211_US_TO_TXOP(_us) (u_int16_t)((u_int32_t)(_us)) >> 5
struct chanAccParams{
/* XXX: is there any reason to have multiple instances of cap_info_count??? */
u_int8_t cap_info_count; /* ver. of the current param set */
struct wmeParams cap_wmeParams[WME_NUM_AC]; /* WME params for each access class */
};
struct ieee80211_wme_state {
u_int32_t wme_flags;
#define WME_F_AGGRMODE 0x00000001 /* STATUS: WME aggressive mode */
u_int wme_hipri_traffic; /* VI/VO frames in beacon interval */
u_int wme_hipri_switch_thresh; /* aggressive mode switch threshold */
u_int wme_hipri_switch_hysteresis; /* aggressive mode switch hysteresis */
struct chanAccParams wme_wmeChanParams; /* configured WME parameters applied to itself*/
struct chanAccParams wme_wmeBssChanParams; /* configured WME parameters broadcasted to STAs*/
struct chanAccParams wme_chanParams; /* channel parameters applied to itself*/
struct chanAccParams wme_bssChanParams; /* channel parameters broadcasted to STAs*/
u_int8_t wme_nonAggressiveMode; /* don't use aggressive params and use WME params */
/* update hardware tx params after wme state change */
int (*wme_update)(struct ieee80211com *);
};
void ieee80211_wme_initparams(struct ieee80211vap *);
void ieee80211_wme_initparams_locked(struct ieee80211vap *);
void ieee80211_wme_updateparams(struct ieee80211vap *);
void ieee80211_wme_updateparams_locked(struct ieee80211vap *);
int ieee80211_open(struct net_device *);
int ieee80211_init(struct net_device *, int);
void ieee80211_start_running(struct ieee80211com *);
int ieee80211_stop(struct net_device *);
void ieee80211_stop_running(struct ieee80211com *);
void ieee80211_beacon_miss(struct ieee80211com *);
#ifdef ATH_SUPERG_DYNTURBO
void ieee80211_dturbo_switch(struct ieee80211com *, int);
#endif
int ieee80211_new_state(struct ieee80211vap *, enum ieee80211_state, int);
void ieee80211_print_essid(const u_int8_t *, int);
#ifdef IEEE80211_DEBUG
void ieee80211_dump_pkt(struct ieee80211com *, const u_int8_t *,
int, int, int, int);
#else
#define ieee80211_dump_pkt(...)
#endif
struct sk_buff *ieee80211_getcfframe(struct ieee80211vap *, int);
/*
* Beacon frames constructed by ieee80211_beacon_alloc
* have the following structure filled in so drivers
* can update the frame later w/ minimal overhead.
*/
struct ieee80211_beacon_offsets {
__le16 *bo_caps; /* capabilities */
u_int8_t *bo_tim; /* start of atim/dtim */
u_int8_t *bo_wme; /* start of WME parameters */
u_int8_t *bo_tim_trailer; /* start of fixed-size tim trailer */
u_int16_t bo_tim_len; /* atim/dtim length in bytes */
u_int16_t bo_tim_trailerlen; /* trailer length in bytes */
u_int8_t *bo_chanswitch; /* where channel switch IE will go */
u_int8_t *bo_ath_caps; /* where ath caps is */
u_int8_t *bo_xr; /* start of xr element */
u_int8_t *bo_erp; /* start of ERP element */
u_int8_t *bo_appie_buf; /* start of APP IE buf */
u_int16_t bo_appie_buf_len; /* APP IE buf length in bytes */
u_int16_t bo_chanswitch_trailerlen;
};
struct sk_buff *ieee80211_beacon_alloc(struct ieee80211_node *,
struct ieee80211_beacon_offsets *);
int ieee80211_beacon_update(struct ieee80211_node *,
struct ieee80211_beacon_offsets *, struct sk_buff *, int, int*);
/* XXX exposed due to of beacon code botch */
u_int8_t *ieee80211_add_rates(u_int8_t *, const struct ieee80211_rateset *);
u_int8_t *ieee80211_add_xrates(u_int8_t *, const struct ieee80211_rateset *);
u_int8_t *ieee80211_add_wpa(u_int8_t *, struct ieee80211vap *);
u_int8_t *ieee80211_add_erp(u_int8_t *, struct ieee80211com *);
u_int8_t *ieee80211_add_athAdvCap(u_int8_t *, u_int8_t, u_int16_t);
u_int8_t *ieee80211_add_xr_param(u_int8_t *, struct ieee80211vap *);
u_int8_t *ieee80211_add_xr_param(u_int8_t *, struct ieee80211vap *);
u_int8_t *ieee80211_add_wme_param(u_int8_t *, struct ieee80211_wme_state *, int);
u_int8_t *ieee80211_add_country(u_int8_t *, struct ieee80211com *);
u_int8_t *ieee80211_add_pwrcnstr(u_int8_t *frm, struct ieee80211com *ic);
u_int8_t *ieee80211_add_athAdvCap(u_int8_t *, u_int8_t, u_int16_t);
/*
* Notification methods called from the 802.11 state machine.
* Note that while these are defined here, their implementation
* is OS-specific.
*/
void ieee80211_notify_node_join(struct ieee80211_node *, int);
void ieee80211_notify_node_leave(struct ieee80211_node *);
void ieee80211_notify_scan_done(struct ieee80211vap *);
void ieee80211_notify_sta_stats(struct ieee80211_node *ni);
#endif /* _NET80211_IEEE80211_PROTO_H_ */
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