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cfb13e0a97
freebsd/sys/net80211/ieee80211_proto.h
Andriy Voskoboinyk d1b671061b net80211: wrap protection frame allocation into ieee80211_alloc_prot() 
Move copy-pasted code for RTS/CTS frame allocation into net80211.
While here, add stat / debug message for allocation failures
(copied from run(4)) + return error here in bwn(4).

Reviewed by:	adrian
Differential Revision:	https://reviews.freebsd.org/D14628
2018-03-09 11:33:56 +00:00

443 lines
18 KiB
C
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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2001 Atsushi Onoe
* Copyright (c) 2002-2009 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.
*
* 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.
*
* $FreeBSD$
*/
#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_CAC = 4, /* doing channel availability check */
IEEE80211_S_RUN = 5, /* operational (e.g. associated) */
IEEE80211_S_CSA = 6, /* channel switch announce pending */
IEEE80211_S_SLEEP = 7, /* power save */
};
#define IEEE80211_S_MAX (IEEE80211_S_SLEEP+1)
#define IEEE80211_SEND_MGMT(_ni,_type,_arg) \
((*(_ni)->ni_ic->ic_send_mgmt)(_ni, _type, _arg))
extern const char *mgt_subtype_name[];
extern const char *ctl_subtype_name[];
extern const char *ieee80211_phymode_name[IEEE80211_MODE_MAX];
extern const int ieee80211_opcap[IEEE80211_OPMODE_MAX];
static __inline const char *
ieee80211_mgt_subtype_name(uint8_t subtype)
{
return mgt_subtype_name[(subtype & IEEE80211_FC0_SUBTYPE_MASK) >>
IEEE80211_FC0_SUBTYPE_SHIFT];
}
static __inline const char *
ieee80211_ctl_subtype_name(uint8_t subtype)
{
return ctl_subtype_name[(subtype & IEEE80211_FC0_SUBTYPE_MASK) >>
IEEE80211_FC0_SUBTYPE_SHIFT];
}
const char *ieee80211_reason_to_string(uint16_t);
void ieee80211_proto_attach(struct ieee80211com *);
void ieee80211_proto_detach(struct ieee80211com *);
void ieee80211_proto_vattach(struct ieee80211vap *);
void ieee80211_proto_vdetach(struct ieee80211vap *);
void ieee80211_promisc(struct ieee80211vap *, bool);
void ieee80211_allmulti(struct ieee80211vap *, bool);
void ieee80211_syncflag(struct ieee80211vap *, int flag);
void ieee80211_syncflag_ht(struct ieee80211vap *, int flag);
void ieee80211_syncflag_vht(struct ieee80211vap *, int flag);
void ieee80211_syncflag_ext(struct ieee80211vap *, int flag);
#define ieee80211_input(ni, m, rssi, nf) \
((ni)->ni_vap->iv_input(ni, m, NULL, rssi, nf))
int ieee80211_input_all(struct ieee80211com *, struct mbuf *, int, int);
int ieee80211_input_mimo(struct ieee80211_node *, struct mbuf *);
int ieee80211_input_mimo_all(struct ieee80211com *, struct mbuf *);
struct ieee80211_bpf_params;
int ieee80211_mgmt_output(struct ieee80211_node *, struct mbuf *, int,
struct ieee80211_bpf_params *);
int ieee80211_raw_xmit(struct ieee80211_node *, struct mbuf *,
const struct ieee80211_bpf_params *);
int ieee80211_output(struct ifnet *, struct mbuf *,
const struct sockaddr *, struct route *ro);
int ieee80211_vap_pkt_send_dest(struct ieee80211vap *, struct mbuf *,
struct ieee80211_node *);
int ieee80211_raw_output(struct ieee80211vap *, struct ieee80211_node *,
struct mbuf *, const struct ieee80211_bpf_params *);
void ieee80211_send_setup(struct ieee80211_node *, struct mbuf *, int, int,
const uint8_t [IEEE80211_ADDR_LEN], const uint8_t [IEEE80211_ADDR_LEN],
const uint8_t [IEEE80211_ADDR_LEN]);
int ieee80211_vap_transmit(struct ifnet *ifp, struct mbuf *m);
void ieee80211_vap_qflush(struct ifnet *ifp);
int ieee80211_send_nulldata(struct ieee80211_node *);
int ieee80211_classify(struct ieee80211_node *, struct mbuf *m);
struct mbuf *ieee80211_mbuf_adjust(struct ieee80211vap *, int,
struct ieee80211_key *, struct mbuf *);
struct mbuf *ieee80211_encap(struct ieee80211vap *, struct ieee80211_node *,
struct mbuf *);
void ieee80211_free_mbuf(struct mbuf *);
int ieee80211_send_mgmt(struct ieee80211_node *, int, int);
struct ieee80211_appie;
int ieee80211_send_probereq(struct ieee80211_node *ni,
const uint8_t sa[IEEE80211_ADDR_LEN],
const uint8_t da[IEEE80211_ADDR_LEN],
const uint8_t bssid[IEEE80211_ADDR_LEN],
const uint8_t *ssid, size_t ssidlen);
struct mbuf * ieee80211_ff_encap1(struct ieee80211vap *, struct mbuf *,
const struct ether_header *);
void ieee80211_tx_complete(struct ieee80211_node *,
struct mbuf *, int);
/*
* The formation of ProbeResponse frames requires guidance to
* deal with legacy clients. When the client is identified as
* "legacy 11b" ieee80211_send_proberesp is passed this token.
*/
#define IEEE80211_SEND_LEGACY_11B 0x1 /* legacy 11b client */
#define IEEE80211_SEND_LEGACY_11 0x2 /* other legacy client */
#define IEEE80211_SEND_LEGACY 0x3 /* any legacy client */
struct mbuf *ieee80211_alloc_proberesp(struct ieee80211_node *, int);
int ieee80211_send_proberesp(struct ieee80211vap *,
const uint8_t da[IEEE80211_ADDR_LEN], int);
struct mbuf *ieee80211_alloc_rts(struct ieee80211com *ic,
const uint8_t [IEEE80211_ADDR_LEN],
const uint8_t [IEEE80211_ADDR_LEN], uint16_t);
struct mbuf *ieee80211_alloc_cts(struct ieee80211com *,
const uint8_t [IEEE80211_ADDR_LEN], uint16_t);
struct mbuf *ieee80211_alloc_prot(struct ieee80211_node *,
const struct mbuf *, uint8_t, int);
uint8_t *ieee80211_add_rates(uint8_t *, const struct ieee80211_rateset *);
uint8_t *ieee80211_add_xrates(uint8_t *, const struct ieee80211_rateset *);
uint8_t *ieee80211_add_ssid(uint8_t *, const uint8_t *, u_int);
uint8_t *ieee80211_add_wpa(uint8_t *, const struct ieee80211vap *);
uint8_t *ieee80211_add_rsn(uint8_t *, const struct ieee80211vap *);
uint8_t *ieee80211_add_qos(uint8_t *, const struct ieee80211_node *);
uint16_t ieee80211_getcapinfo(struct ieee80211vap *,
struct ieee80211_channel *);
struct ieee80211_wme_state;
uint8_t * ieee80211_add_wme_info(uint8_t *frm, struct ieee80211_wme_state *wme);
void ieee80211_reset_erp(struct ieee80211com *);
void ieee80211_set_shortslottime(struct ieee80211com *, int onoff);
int ieee80211_iserp_rateset(const struct ieee80211_rateset *);
void ieee80211_setbasicrates(struct ieee80211_rateset *,
enum ieee80211_phymode);
void ieee80211_addbasicrates(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 */
KASSERT((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_CTL,
("%s: control frame", __func__));
if (IEEE80211_IS_DSTODS(wh))
size += IEEE80211_ADDR_LEN;
if (IEEE80211_QOS_HAS_SEQ(wh))
size += sizeof(uint16_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);
case IEEE80211_FC0_SUBTYPE_BAR:
return sizeof(struct ieee80211_frame_bar);
}
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. One special authenticator
* is xauth; it intercepts requests so that protocols like
* WPA can be handled in user space.
*/
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 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 auth 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 struct ieee80211_frame *wh);
int (*iac_add)(struct ieee80211vap *,
const uint8_t mac[IEEE80211_ADDR_LEN]);
int (*iac_remove)(struct ieee80211vap *,
const uint8_t mac[IEEE80211_ADDR_LEN]);
int (*iac_flush)(struct ieee80211vap *);
int (*iac_setpolicy)(struct ieee80211vap *, int);
int (*iac_getpolicy)(struct ieee80211vap *);
int (*iac_setioctl)(struct ieee80211vap *, struct ieee80211req *);
int (*iac_getioctl)(struct ieee80211vap *, 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 legacy rate */
#define IEEE80211_F_DONEGO 0x00000004 /* calc negotiated rate */
#define IEEE80211_F_DODEL 0x00000008 /* delete ignore rate */
#define IEEE80211_F_DOBRS 0x00000010 /* check basic rate set */
#define IEEE80211_F_JOIN 0x00000020 /* sta joining our bss */
#define IEEE80211_F_DOFMCS 0x00000040 /* use fixed HT rate */
int ieee80211_fix_rate(struct ieee80211_node *,
struct ieee80211_rateset *, int);
/*
* WME/WMM support.
*/
struct wmeParams {
uint8_t wmep_acm;
uint8_t wmep_aifsn;
uint8_t wmep_logcwmin; /* log2(cwmin) */
uint8_t wmep_logcwmax; /* log2(cwmax) */
uint8_t wmep_txopLimit;
uint8_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 {
uint8_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 aggressive mode */
u_int wme_hipri_traffic; /* VI/VO frames in beacon interval */
u_int wme_hipri_switch_thresh;/* aggressive mode switch thresh */
u_int wme_hipri_switch_hysteresis;/* aggressive 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 ieee80211vap *);
void ieee80211_wme_updateparams(struct ieee80211vap *);
void ieee80211_wme_updateparams_locked(struct ieee80211vap *);
void ieee80211_wme_vap_getparams(struct ieee80211vap *vap,
struct chanAccParams *);
void ieee80211_wme_ic_getparams(struct ieee80211com *ic,
struct chanAccParams *);
int ieee80211_wme_vap_ac_is_noack(struct ieee80211vap *vap, int ac);
/*
* Return the WME TID from a QoS frame. If no TID
* is present return the index for the "non-QoS" entry.
*/
static __inline uint8_t
ieee80211_gettid(const struct ieee80211_frame *wh)
{
uint8_t tid;
if (IEEE80211_QOS_HAS_SEQ(wh)) {
if (IEEE80211_IS_DSTODS(wh))
tid = ((const struct ieee80211_qosframe_addr4 *)wh)->
i_qos[0];
else
tid = ((const struct ieee80211_qosframe *)wh)->i_qos[0];
tid &= IEEE80211_QOS_TID;
} else
tid = IEEE80211_NONQOS_TID;
return tid;
}
void ieee80211_waitfor_parent(struct ieee80211com *);
void ieee80211_start_locked(struct ieee80211vap *);
void ieee80211_init(void *);
void ieee80211_start_all(struct ieee80211com *);
void ieee80211_stop_locked(struct ieee80211vap *);
void ieee80211_stop(struct ieee80211vap *);
void ieee80211_stop_all(struct ieee80211com *);
void ieee80211_suspend_all(struct ieee80211com *);
void ieee80211_resume_all(struct ieee80211com *);
void ieee80211_restart_all(struct ieee80211com *);
void ieee80211_dturbo_switch(struct ieee80211vap *, int newflags);
void ieee80211_swbmiss(void *arg);
void ieee80211_beacon_miss(struct ieee80211com *);
int ieee80211_new_state(struct ieee80211vap *, enum ieee80211_state, int);
int ieee80211_new_state_locked(struct ieee80211vap *, enum ieee80211_state,
int);
void ieee80211_print_essid(const uint8_t *, int);
void ieee80211_dump_pkt(struct ieee80211com *,
const uint8_t *, int, int, int);
extern const char *ieee80211_opmode_name[];
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 {
uint8_t bo_flags[4]; /* update/state flags */
uint16_t *bo_caps; /* capabilities */
uint8_t *bo_cfp; /* start of CFParms element */
uint8_t *bo_tim; /* start of atim/dtim */
uint8_t *bo_wme; /* start of WME parameters */
uint8_t *bo_tdma; /* start of TDMA parameters */
uint8_t *bo_tim_trailer;/* start of fixed-size trailer */
uint16_t bo_tim_len; /* atim/dtim length in bytes */
uint16_t bo_tim_trailer_len;/* tim trailer length in bytes */
uint8_t *bo_erp; /* start of ERP element */
uint8_t *bo_htinfo; /* start of HT info element */
uint8_t *bo_ath; /* start of ATH parameters */
uint8_t *bo_appie; /* start of AppIE element */
uint16_t bo_appie_len; /* AppIE length in bytes */
uint16_t bo_csa_trailer_len;
uint8_t *bo_csa; /* start of CSA element */
uint8_t *bo_quiet; /* start of Quiet element */
uint8_t *bo_meshconf; /* start of MESHCONF element */
uint8_t *bo_vhtinfo; /* start of VHT info element (XXX VHTCAP?) */
uint8_t *bo_spare[2];
};
struct mbuf *ieee80211_beacon_alloc(struct ieee80211_node *);
/*
* Beacon frame updates are signaled through calls to iv_update_beacon
* with one of the IEEE80211_BEACON_* tokens defined below. For devices
* that construct beacon frames on the host this can trigger a rebuild
* or defer the processing. For devices that offload beacon frame
* handling this callback can be used to signal a rebuild. The bo_flags
* array in the ieee80211_beacon_offsets structure is intended to record
* deferred processing requirements; ieee80211_beacon_update uses the
* state to optimize work. Since this structure is owned by the driver
* and not visible to the 802.11 layer drivers must supply an iv_update_beacon
* callback that marks the flag bits and schedules (as necessary) an update.
*/
enum {
IEEE80211_BEACON_CAPS = 0, /* capabilities */
IEEE80211_BEACON_TIM = 1, /* DTIM/ATIM */
IEEE80211_BEACON_WME = 2,
IEEE80211_BEACON_ERP = 3, /* Extended Rate Phy */
IEEE80211_BEACON_HTINFO = 4, /* HT Information */
IEEE80211_BEACON_APPIE = 5, /* Application IE's */
IEEE80211_BEACON_CFP = 6, /* CFParms */
IEEE80211_BEACON_CSA = 7, /* Channel Switch Announcement */
IEEE80211_BEACON_TDMA = 9, /* TDMA Info */
IEEE80211_BEACON_ATH = 10, /* ATH parameters */
IEEE80211_BEACON_MESHCONF = 11, /* Mesh Configuration */
IEEE80211_BEACON_QUIET = 12, /* Quiet time IE */
IEEE80211_BEACON_VHTINFO = 13, /* VHT information */
};
int ieee80211_beacon_update(struct ieee80211_node *,
struct mbuf *, int mcast);
void ieee80211_csa_startswitch(struct ieee80211com *,
struct ieee80211_channel *, int mode, int count);
void ieee80211_csa_completeswitch(struct ieee80211com *);
void ieee80211_csa_cancelswitch(struct ieee80211com *);
void ieee80211_cac_completeswitch(struct ieee80211vap *);
/*
* 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 newassoc);
void ieee80211_notify_node_leave(struct ieee80211_node *);
void ieee80211_notify_scan_done(struct ieee80211vap *);
void ieee80211_notify_wds_discover(struct ieee80211_node *);
void ieee80211_notify_csa(struct ieee80211com *,
const struct ieee80211_channel *, int mode, int count);
void ieee80211_notify_radar(struct ieee80211com *,
const struct ieee80211_channel *);
enum ieee80211_notify_cac_event {
IEEE80211_NOTIFY_CAC_START = 0, /* CAC timer started */
IEEE80211_NOTIFY_CAC_STOP = 1, /* CAC intentionally stopped */
IEEE80211_NOTIFY_CAC_RADAR = 2, /* CAC stopped due to radar detectio */
IEEE80211_NOTIFY_CAC_EXPIRE = 3, /* CAC expired w/o radar */
};
void ieee80211_notify_cac(struct ieee80211com *,
const struct ieee80211_channel *,
enum ieee80211_notify_cac_event);
void ieee80211_notify_node_deauth(struct ieee80211_node *);
void ieee80211_notify_node_auth(struct ieee80211_node *);
void ieee80211_notify_country(struct ieee80211vap *, const uint8_t [],
const uint8_t cc[2]);
void ieee80211_notify_radio(struct ieee80211com *, int);
#endif /* _NET80211_IEEE80211_PROTO_H_ */
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