/* $NetBSD: ieee80211_proto.h,v 1.16 2006/03/02 03:38:48 dyoung Exp $ */ /*- * 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. * * $FreeBSD: src/sys/net80211/ieee80211_proto.h,v 1.16 2005/08/13 17:31:48 sam Exp $ */ #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(_ic,_ni,_type,_arg) \ ((*(_ic)->ic_send_mgmt)(_ic, _ni, _type, _arg)) extern const char *ieee80211_mgt_subtype_name[]; extern const char *ieee80211_phymode_name[]; void ieee80211_proto_attach(struct ieee80211com *); void ieee80211_proto_detach(struct ieee80211com *); struct ieee80211_node; int ieee80211_input(struct ieee80211com *, struct mbuf *, struct ieee80211_node *, int, u_int32_t); int ieee80211_setup_rates(struct ieee80211_node *ni, const u_int8_t *rates, const u_int8_t *xrates, int flags); void ieee80211_saveie(u_int8_t **, const u_int8_t *); void ieee80211_recv_mgmt(struct ieee80211com *, struct mbuf *, struct ieee80211_node *, int, int, u_int32_t); int ieee80211_send_nulldata(struct ieee80211_node *); int ieee80211_send_probereq(struct ieee80211_node *ni, 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 *ssid, size_t ssidlen, const void *optie, size_t optielen); int ieee80211_send_mgmt(struct ieee80211com *, struct ieee80211_node *, int, int); int ieee80211_classify(struct ieee80211com *, struct mbuf *, struct ieee80211_node *); struct mbuf *ieee80211_encap(struct ieee80211com *, struct mbuf *, struct ieee80211_node *); void ieee80211_pwrsave(struct ieee80211com *, struct ieee80211_node *, struct mbuf *); void ieee80211_reset_erp(struct ieee80211com *); void ieee80211_set_shortslottime(struct ieee80211com *, int onoff); int ieee80211_iserp_rateset(struct ieee80211com *, struct ieee80211_rateset *); void ieee80211_set11gbasicrates(struct ieee80211_rateset *, enum ieee80211_phymode); /* * 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 */ IASSERT((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; } /* * Return the size of the 802.11 header; 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); } return sizeof(struct ieee80211_frame_min); } 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 ieee80211com *); void (*ia_detach)(struct ieee80211com *); void (*ia_node_join)(struct ieee80211com *, struct ieee80211_node *); void (*ia_node_leave)(struct ieee80211com *, struct ieee80211_node *); }; void ieee80211_authenticator_register(int type, const struct ieee80211_authenticator *); void ieee80211_authenticator_unregister(int type); const struct ieee80211_authenticator *ieee80211_authenticator_get(int auth); struct ieee80211req; /* * 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 ieee80211com *); void (*iac_detach)(struct ieee80211com *); int (*iac_check)(struct ieee80211com *, const u_int8_t mac[IEEE80211_ADDR_LEN]); int (*iac_add)(struct ieee80211com *, const u_int8_t mac[IEEE80211_ADDR_LEN]); int (*iac_remove)(struct ieee80211com *, const u_int8_t mac[IEEE80211_ADDR_LEN]); int (*iac_flush)(struct ieee80211com *); int (*iac_setpolicy)(struct ieee80211com *, int); int (*iac_getpolicy)(struct ieee80211com *); int (*iac_setioctl)(struct ieee80211com *, struct ieee80211req *); int (*iac_getioctl)(struct ieee80211com *, struct ieee80211req *); }; 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); /* * WME/WMM support. */ struct wmeParams { u_int8_t wmep_acm; u_int8_t wmep_aifsn; u_int8_t wmep_logcwmin; /* log2(cwmin) */ u_int8_t wmep_logcwmax; /* log2(cwmax) */ u_int8_t wmep_txopLimit; u_int8_t wmep_noackPolicy; /* 0 (ack), 1 (no ack) */ }; #define IEEE80211_TXOP_TO_US(_txop) ((_txop)<<5) #define IEEE80211_US_TO_TXOP(_us) ((_us)>>5) struct chanAccParams { u_int8_t cap_info; /* version of the current set */ struct wmeParams cap_wmeParams[WME_NUM_AC]; }; struct ieee80211_wme_state { u_int wme_flags; #define WME_F_AGGRMODE 0x00000001 /* STATUS: WME agressive mode */ u_int wme_hipri_traffic; /* VI/VO frames in beacon interval */ u_int wme_hipri_switch_thresh;/* agressive mode switch thresh */ u_int wme_hipri_switch_hysteresis;/* agressive mode switch hysteresis */ struct wmeParams wme_params[4]; /* from assoc resp for each AC*/ struct chanAccParams wme_wmeChanParams; /* WME params applied to self */ struct chanAccParams wme_wmeBssChanParams;/* WME params bcast to stations */ struct chanAccParams wme_chanParams; /* params applied to self */ struct chanAccParams wme_bssChanParams; /* params bcast to stations */ int (*wme_update)(struct ieee80211com *); }; void ieee80211_wme_initparams(struct ieee80211com *); void ieee80211_wme_updateparams(struct ieee80211com *); void ieee80211_wme_updateparams_locked(struct ieee80211com *); #define ieee80211_new_state(_ic, _nstate, _arg) \ (((_ic)->ic_newstate)((_ic), (_nstate), (_arg))) extern int ieee80211_compute_duration(const struct ieee80211_frame_min *, const struct ieee80211_key *, int, uint32_t, int, int, struct ieee80211_duration *, struct ieee80211_duration *, int *, int); void ieee80211_beacon_miss(struct ieee80211com *); void ieee80211_print_essid(const u_int8_t *, int); void ieee80211_dump_pkt(const u_int8_t *, int, int, int); extern const char *ieee80211_state_name[IEEE80211_S_MAX]; extern const char *ieee80211_wme_acnames[]; /* * 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 { u_int16_t *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_trailer; /* start of fixed-size trailer */ u_int16_t bo_tim_len; /* atim/dtim length in bytes */ u_int16_t bo_trailer_len; /* trailer length in bytes */ }; struct mbuf *ieee80211_beacon_alloc(struct ieee80211com *, struct ieee80211_node *, struct ieee80211_beacon_offsets *); int ieee80211_beacon_update(struct ieee80211com *, struct ieee80211_node *, struct ieee80211_beacon_offsets *, struct mbuf *, int broadcast); /* * 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 ieee80211com *, struct ieee80211_node *, int newassoc); void ieee80211_notify_node_leave(struct ieee80211com *, struct ieee80211_node *); void ieee80211_notify_scan_done(struct ieee80211com *); #endif /* !_NET80211_IEEE80211_PROTO_H_ */