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freebsd-dev/sys/net80211/ieee80211_freebsd.h
Sam Leffler 6e05dab14d strip M_FRAG & co mbufs coming down from ip_output, these flags are 
re-used within net80211 to mark 802.11 frags so allowing them to
leak through to the driver caused packets to be dropped in ath
2009-02-13 05:26:04 +00:00

524 lines
18 KiB
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/*-
* Copyright (c) 2003-2008 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_FREEBSD_H_
#define _NET80211_IEEE80211_FREEBSD_H_
#ifdef _KERNEL
#include <sys/param.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/rwlock.h>
/*
* Common state locking definitions.
*/
typedef struct {
char name[16]; /* e.g. "ath0_com_lock" */
struct mtx mtx;
} ieee80211_com_lock_t;
#define IEEE80211_LOCK_INIT(_ic, _name) do { \
ieee80211_com_lock_t *cl = &(_ic)->ic_comlock; \
snprintf(cl->name, sizeof(cl->name), "%s_com_lock", _name); \
mtx_init(&cl->mtx, cl->name, NULL, MTX_DEF | MTX_RECURSE); \
} while (0)
#define IEEE80211_LOCK_OBJ(_ic) (&(_ic)->ic_comlock.mtx)
#define IEEE80211_LOCK_DESTROY(_ic) mtx_destroy(IEEE80211_LOCK_OBJ(_ic))
#define IEEE80211_LOCK(_ic) mtx_lock(IEEE80211_LOCK_OBJ(_ic))
#define IEEE80211_UNLOCK(_ic) mtx_unlock(IEEE80211_LOCK_OBJ(_ic))
#define IEEE80211_LOCK_ASSERT(_ic) \
mtx_assert(IEEE80211_LOCK_OBJ(_ic), MA_OWNED)
/*
* Node locking definitions.
*/
typedef struct {
char name[16]; /* e.g. "ath0_node_lock" */
struct mtx mtx;
} ieee80211_node_lock_t;
#define IEEE80211_NODE_LOCK_INIT(_nt, _name) do { \
ieee80211_node_lock_t *nl = &(_nt)->nt_nodelock; \
snprintf(nl->name, sizeof(nl->name), "%s_node_lock", _name); \
mtx_init(&nl->mtx, nl->name, NULL, MTX_DEF | MTX_RECURSE); \
} while (0)
#define IEEE80211_NODE_LOCK_OBJ(_nt) (&(_nt)->nt_nodelock.mtx)
#define IEEE80211_NODE_LOCK_DESTROY(_nt) \
mtx_destroy(IEEE80211_NODE_LOCK_OBJ(_nt))
#define IEEE80211_NODE_LOCK(_nt) \
mtx_lock(IEEE80211_NODE_LOCK_OBJ(_nt))
#define IEEE80211_NODE_IS_LOCKED(_nt) \
mtx_owned(IEEE80211_NODE_LOCK_OBJ(_nt))
#define IEEE80211_NODE_UNLOCK(_nt) \
mtx_unlock(IEEE80211_NODE_LOCK_OBJ(_nt))
#define IEEE80211_NODE_LOCK_ASSERT(_nt) \
mtx_assert(IEEE80211_NODE_LOCK_OBJ(_nt), MA_OWNED)
/*
* Node table iteration locking definitions; this protects the
* scan generation # used to iterate over the station table
* while grabbing+releasing the node lock.
*/
typedef struct {
char name[16]; /* e.g. "ath0_scan_lock" */
struct mtx mtx;
} ieee80211_scan_lock_t;
#define IEEE80211_NODE_ITERATE_LOCK_INIT(_nt, _name) do { \
ieee80211_scan_lock_t *sl = &(_nt)->nt_scanlock; \
snprintf(sl->name, sizeof(sl->name), "%s_scan_lock", _name); \
mtx_init(&sl->mtx, sl->name, NULL, MTX_DEF); \
} while (0)
#define IEEE80211_NODE_ITERATE_LOCK_OBJ(_nt) (&(_nt)->nt_scanlock.mtx)
#define IEEE80211_NODE_ITERATE_LOCK_DESTROY(_nt) \
mtx_destroy(IEEE80211_NODE_ITERATE_LOCK_OBJ(_nt))
#define IEEE80211_NODE_ITERATE_LOCK(_nt) \
mtx_lock(IEEE80211_NODE_ITERATE_LOCK_OBJ(_nt))
#define IEEE80211_NODE_ITERATE_UNLOCK(_nt) \
mtx_unlock(IEEE80211_NODE_ITERATE_LOCK_OBJ(_nt))
#define _AGEQ_ENQUEUE(_ifq, _m, _qlen, _age) do { \
(_m)->m_nextpkt = NULL; \
if ((_ifq)->ifq_tail != NULL) { \
_age -= M_AGE_GET((_ifq)->ifq_head); \
(_ifq)->ifq_tail->m_nextpkt = (_m); \
} else { \
(_ifq)->ifq_head = (_m); \
} \
M_AGE_SET(_m, _age); \
(_ifq)->ifq_tail = (_m); \
(_qlen) = ++(_ifq)->ifq_len; \
} while (0)
/*
* Power-save queue definitions.
*/
typedef struct mtx ieee80211_psq_lock_t;
#define IEEE80211_PSQ_INIT(_psq, _name) \
mtx_init(&(_psq)->psq_lock, _name, "802.11 ps q", MTX_DEF);
#define IEEE80211_PSQ_DESTROY(_psq) mtx_destroy(&(_psq)->psq_lock)
#define IEEE80211_PSQ_LOCK(_psq) mtx_lock(&(_psq)->psq_lock)
#define IEEE80211_PSQ_UNLOCK(_psq) mtx_unlock(&(_psq)->psq_lock)
#ifndef IF_PREPEND_LIST
#define _IF_PREPEND_LIST(ifq, mhead, mtail, mcount) do { \
(mtail)->m_nextpkt = (ifq)->ifq_head; \
if ((ifq)->ifq_tail == NULL) \
(ifq)->ifq_tail = (mtail); \
(ifq)->ifq_head = (mhead); \
(ifq)->ifq_len += (mcount); \
} while (0)
#define IF_PREPEND_LIST(ifq, mhead, mtail, mcount) do { \
IF_LOCK(ifq); \
_IF_PREPEND_LIST(ifq, mhead, mtail, mcount); \
IF_UNLOCK(ifq); \
} while (0)
#endif /* IF_PREPEND_LIST */
/* XXX temporary */
#define IEEE80211_NODE_WDSQ_INIT(_ni, _name) do { \
mtx_init(&(_ni)->ni_wdsq.ifq_mtx, _name, "802.11 wds queue", MTX_DEF);\
(_ni)->ni_wdsq.ifq_maxlen = IEEE80211_PS_MAX_QUEUE; \
} while (0)
#define IEEE80211_NODE_WDSQ_DESTROY(_ni) do { \
mtx_destroy(&(_ni)->ni_wdsq.ifq_mtx); \
} while (0)
#define IEEE80211_NODE_WDSQ_QLEN(_ni) _IF_QLEN(&(_ni)->ni_wdsq)
#define IEEE80211_NODE_WDSQ_LOCK(_ni) IF_LOCK(&(_ni)->ni_wdsq)
#define IEEE80211_NODE_WDSQ_UNLOCK(_ni) IF_UNLOCK(&(_ni)->ni_wdsq)
#define _IEEE80211_NODE_WDSQ_DEQUEUE_HEAD(_ni, _m) do { \
_IF_DEQUEUE(&(_ni)->ni_wdsq, m); \
} while (0)
#define _IEEE80211_NODE_WDSQ_ENQUEUE(_ni, _m, _qlen, _age) do { \
_AGEQ_ENQUEUE(&ni->ni_wdsq, _m, _qlen, _age); \
} while (0)
/*
* 802.1x MAC ACL database locking definitions.
*/
typedef struct mtx acl_lock_t;
#define ACL_LOCK_INIT(_as, _name) \
mtx_init(&(_as)->as_lock, _name, "802.11 ACL", MTX_DEF)
#define ACL_LOCK_DESTROY(_as) mtx_destroy(&(_as)->as_lock)
#define ACL_LOCK(_as) mtx_lock(&(_as)->as_lock)
#define ACL_UNLOCK(_as) mtx_unlock(&(_as)->as_lock)
#define ACL_LOCK_ASSERT(_as) \
mtx_assert((&(_as)->as_lock), MA_OWNED)
/*
* Node reference counting definitions.
*
* ieee80211_node_initref initialize the reference count to 1
* ieee80211_node_incref add a reference
* ieee80211_node_decref remove a reference
* ieee80211_node_dectestref remove a reference and return 1 if this
* is the last reference, otherwise 0
* ieee80211_node_refcnt reference count for printing (only)
*/
#include <machine/atomic.h>
#define ieee80211_node_initref(_ni) \
do { ((_ni)->ni_refcnt = 1); } while (0)
#define ieee80211_node_incref(_ni) \
atomic_add_int(&(_ni)->ni_refcnt, 1)
#define ieee80211_node_decref(_ni) \
atomic_subtract_int(&(_ni)->ni_refcnt, 1)
struct ieee80211_node;
int ieee80211_node_dectestref(struct ieee80211_node *ni);
#define ieee80211_node_refcnt(_ni) (_ni)->ni_refcnt
struct ifqueue;
struct ieee80211vap;
void ieee80211_drain_ifq(struct ifqueue *);
void ieee80211_flush_ifq(struct ifqueue *, struct ieee80211vap *);
void ieee80211_vap_destroy(struct ieee80211vap *);
#define IFNET_IS_UP_RUNNING(_ifp) \
(((_ifp)->if_flags & IFF_UP) && \
((_ifp)->if_drv_flags & IFF_DRV_RUNNING))
#define msecs_to_ticks(ms) (((ms)*hz)/1000)
#define ticks_to_msecs(t) (1000*(t) / hz)
#define ticks_to_secs(t) ((t) / hz)
#define time_after(a,b) ((long)(b) - (long)(a) < 0)
#define time_before(a,b) time_after(b,a)
#define time_after_eq(a,b) ((long)(a) - (long)(b) >= 0)
#define time_before_eq(a,b) time_after_eq(b,a)
#define memmove(dst, src, n) ovbcopy(src, dst, n)
struct mbuf *ieee80211_getmgtframe(uint8_t **frm, int headroom, int pktlen);
/* tx path usage */
#define M_ENCAP M_PROTO1 /* 802.11 encap done */
#define M_WDS M_PROTO2 /* WDS frame */
#define M_EAPOL M_PROTO3 /* PAE/EAPOL frame */
#define M_PWR_SAV M_PROTO4 /* bypass PS handling */
#define M_MORE_DATA M_PROTO5 /* more data frames to follow */
#define M_FF M_PROTO6 /* fast frame */
#define M_TXCB M_PROTO7 /* do tx complete callback */
#define M_AMPDU_MPDU M_PROTO8 /* ok for A-MPDU aggregation */
#define M_80211_TX \
(M_FRAG|M_FIRSTFRAG|M_LASTFRAG|M_ENCAP|M_WDS|M_EAPOL|M_PWR_SAV|\
M_MORE_DATA|M_FF|M_TXCB|M_AMPDU_MPDU)
/* rx path usage */
#define M_AMPDU M_PROTO1 /* A-MPDU subframe */
#define M_WEP M_PROTO2 /* WEP done by hardware */
#if 0
#define M_AMPDU_MPDU M_PROTO8 /* A-MPDU re-order done */
#endif
#define M_80211_RX (M_AMPDU|M_WEP|M_AMPDU_MPDU)
/*
* Store WME access control bits in the vlan tag.
* This is safe since it's done after the packet is classified
* (where we use any previous tag) and because it's passed
* directly in to the driver and there's no chance someone
* else will clobber them on us.
*/
#define M_WME_SETAC(m, ac) \
((m)->m_pkthdr.ether_vtag = (ac))
#define M_WME_GETAC(m) ((m)->m_pkthdr.ether_vtag)
/*
* Mbufs on the power save queue are tagged with an age and
* timed out. We reuse the hardware checksum field in the
* mbuf packet header to store this data.
*/
#define M_AGE_SET(m,v) (m->m_pkthdr.csum_data = v)
#define M_AGE_GET(m) (m->m_pkthdr.csum_data)
#define M_AGE_SUB(m,adj) (m->m_pkthdr.csum_data -= adj)
#define MTAG_ABI_NET80211 1132948340 /* net80211 ABI */
struct ieee80211_cb {
void (*func)(struct ieee80211_node *, void *, int status);
void *arg;
};
#define NET80211_TAG_CALLBACK 0 /* xmit complete callback */
int ieee80211_add_callback(struct mbuf *m,
void (*func)(struct ieee80211_node *, void *, int), void *arg);
void ieee80211_process_callback(struct ieee80211_node *, struct mbuf *, int);
void get_random_bytes(void *, size_t);
struct ieee80211com;
void ieee80211_sysctl_attach(struct ieee80211com *);
void ieee80211_sysctl_detach(struct ieee80211com *);
void ieee80211_sysctl_vattach(struct ieee80211vap *);
void ieee80211_sysctl_vdetach(struct ieee80211vap *);
void ieee80211_load_module(const char *);
/*
* A "policy module" is an adjunct module to net80211 that provides
* functionality that typically includes policy decisions. This
* modularity enables extensibility and vendor-supplied functionality.
*/
#define _IEEE80211_POLICY_MODULE(policy, name, version) \
typedef void (*policy##_setup)(int); \
SET_DECLARE(policy##_set, policy##_setup); \
static int \
wlan_##name##_modevent(module_t mod, int type, void *unused) \
{ \
policy##_setup * const *iter, f; \
switch (type) { \
case MOD_LOAD: \
SET_FOREACH(iter, policy##_set) { \
f = (void*) *iter; \
f(type); \
} \
return 0; \
case MOD_UNLOAD: \
case MOD_QUIESCE: \
if (nrefs) { \
printf("wlan_##name: still in use (%u dynamic refs)\n",\
nrefs); \
return EBUSY; \
} \
if (type == MOD_UNLOAD) { \
SET_FOREACH(iter, policy##_set) { \
f = (void*) *iter; \
f(type); \
} \
} \
return 0; \
} \
return EINVAL; \
} \
static moduledata_t name##_mod = { \
"wlan_" #name, \
wlan_##name##_modevent, \
0 \
}; \
DECLARE_MODULE(wlan_##name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);\
MODULE_VERSION(wlan_##name, version); \
MODULE_DEPEND(wlan_##name, wlan, 1, 1, 1)
/*
* Crypto modules implement cipher support.
*/
#define IEEE80211_CRYPTO_MODULE(name, version) \
_IEEE80211_POLICY_MODULE(crypto, name, version); \
static void \
name##_modevent(int type) \
{ \
if (type == MOD_LOAD) \
ieee80211_crypto_register(&name); \
else \
ieee80211_crypto_unregister(&name); \
} \
TEXT_SET(crypto##_set, name##_modevent)
/*
* Scanner modules provide scanning policy.
*/
#define IEEE80211_SCANNER_MODULE(name, version) \
_IEEE80211_POLICY_MODULE(scanner, name, version)
#define IEEE80211_SCANNER_ALG(name, alg, v) \
static void \
name##_modevent(int type) \
{ \
if (type == MOD_LOAD) \
ieee80211_scanner_register(alg, &v); \
else \
ieee80211_scanner_unregister(alg, &v); \
} \
TEXT_SET(scanner_set, name##_modevent); \
/*
* ACL modules implement acl policy.
*/
#define IEEE80211_ACL_MODULE(name, alg, version) \
_IEEE80211_POLICY_MODULE(acl, name, version); \
static void \
alg##_modevent(int type) \
{ \
if (type == MOD_LOAD) \
ieee80211_aclator_register(&alg); \
else \
ieee80211_aclator_unregister(&alg); \
} \
TEXT_SET(acl_set, alg##_modevent); \
/*
* Authenticator modules handle 802.1x/WPA authentication.
*/
#define IEEE80211_AUTH_MODULE(name, version) \
_IEEE80211_POLICY_MODULE(auth, name, version)
#define IEEE80211_AUTH_ALG(name, alg, v) \
static void \
name##_modevent(int type) \
{ \
if (type == MOD_LOAD) \
ieee80211_authenticator_register(alg, &v); \
else \
ieee80211_authenticator_unregister(alg); \
} \
TEXT_SET(auth_set, name##_modevent)
/*
* Rate control modules provide tx rate control support.
*/
#define IEEE80211_RATE_MODULE(alg, version) \
_IEEE80211_POLICY_MODULE(rate, alg, version); \
static void \
alg##_modevent(int type) \
{ \
/* XXX nothing to do until the rate control framework arrives */\
} \
TEXT_SET(rate##_set, alg##_modevent)
#endif /* _KERNEL */
/* XXX this stuff belongs elsewhere */
/*
* Message formats for messages from the net80211 layer to user
* applications via the routing socket. These messages are appended
* to an if_announcemsghdr structure.
*/
struct ieee80211_join_event {
uint8_t iev_addr[6];
};
struct ieee80211_leave_event {
uint8_t iev_addr[6];
};
struct ieee80211_replay_event {
uint8_t iev_src[6]; /* src MAC */
uint8_t iev_dst[6]; /* dst MAC */
uint8_t iev_cipher; /* cipher type */
uint8_t iev_keyix; /* key id/index */
uint64_t iev_keyrsc; /* RSC from key */
uint64_t iev_rsc; /* RSC from frame */
};
struct ieee80211_michael_event {
uint8_t iev_src[6]; /* src MAC */
uint8_t iev_dst[6]; /* dst MAC */
uint8_t iev_cipher; /* cipher type */
uint8_t iev_keyix; /* key id/index */
};
struct ieee80211_wds_event {
uint8_t iev_addr[6];
};
struct ieee80211_csa_event {
uint32_t iev_flags; /* channel flags */
uint16_t iev_freq; /* setting in Mhz */
uint8_t iev_ieee; /* IEEE channel number */
uint8_t iev_mode; /* CSA mode */
uint8_t iev_count; /* CSA count */
};
struct ieee80211_cac_event {
uint32_t iev_flags; /* channel flags */
uint16_t iev_freq; /* setting in Mhz */
uint8_t iev_ieee; /* IEEE channel number */
/* XXX timestamp? */
uint8_t iev_type; /* IEEE80211_NOTIFY_CAC_* */
};
struct ieee80211_radar_event {
uint32_t iev_flags; /* channel flags */
uint16_t iev_freq; /* setting in Mhz */
uint8_t iev_ieee; /* IEEE channel number */
/* XXX timestamp? */
};
struct ieee80211_auth_event {
uint8_t iev_addr[6];
};
struct ieee80211_deauth_event {
uint8_t iev_addr[6];
};
struct ieee80211_country_event {
uint8_t iev_addr[6];
uint8_t iev_cc[2]; /* ISO country code */
};
struct ieee80211_radio_event {
uint8_t iev_state; /* 1 on, 0 off */
};
#define RTM_IEEE80211_ASSOC 100 /* station associate (bss mode) */
#define RTM_IEEE80211_REASSOC 101 /* station re-associate (bss mode) */
#define RTM_IEEE80211_DISASSOC 102 /* station disassociate (bss mode) */
#define RTM_IEEE80211_JOIN 103 /* station join (ap mode) */
#define RTM_IEEE80211_LEAVE 104 /* station leave (ap mode) */
#define RTM_IEEE80211_SCAN 105 /* scan complete, results available */
#define RTM_IEEE80211_REPLAY 106 /* sequence counter replay detected */
#define RTM_IEEE80211_MICHAEL 107 /* Michael MIC failure detected */
#define RTM_IEEE80211_REJOIN 108 /* station re-associate (ap mode) */
#define RTM_IEEE80211_WDS 109 /* WDS discovery (ap mode) */
#define RTM_IEEE80211_CSA 110 /* Channel Switch Announcement event */
#define RTM_IEEE80211_RADAR 111 /* radar event */
#define RTM_IEEE80211_CAC 112 /* Channel Availability Check event */
#define RTM_IEEE80211_DEAUTH 113 /* station deauthenticate */
#define RTM_IEEE80211_AUTH 114 /* station authenticate (ap mode) */
#define RTM_IEEE80211_COUNTRY 115 /* discovered country code (sta mode) */
#define RTM_IEEE80211_RADIO 116 /* RF kill switch state change */
/*
* Structure prepended to raw packets sent through the bpf
* interface when set to DLT_IEEE802_11_RADIO. This allows
* user applications to specify pretty much everything in
* an Atheros tx descriptor. XXX need to generalize.
*
* XXX cannot be more than 14 bytes as it is copied to a sockaddr's
* XXX sa_data area.
*/
struct ieee80211_bpf_params {
uint8_t ibp_vers; /* version */
#define IEEE80211_BPF_VERSION 0
uint8_t ibp_len; /* header length in bytes */
uint8_t ibp_flags;
#define IEEE80211_BPF_SHORTPRE 0x01 /* tx with short preamble */
#define IEEE80211_BPF_NOACK 0x02 /* tx with no ack */
#define IEEE80211_BPF_CRYPTO 0x04 /* tx with h/w encryption */
#define IEEE80211_BPF_FCS 0x10 /* frame incldues FCS */
#define IEEE80211_BPF_DATAPAD 0x20 /* frame includes data padding */
#define IEEE80211_BPF_RTS 0x40 /* tx with RTS/CTS */
#define IEEE80211_BPF_CTS 0x80 /* tx with CTS only */
uint8_t ibp_pri; /* WME/WMM AC+tx antenna */
uint8_t ibp_try0; /* series 1 try count */
uint8_t ibp_rate0; /* series 1 IEEE tx rate */
uint8_t ibp_power; /* tx power (device units) */
uint8_t ibp_ctsrate; /* IEEE tx rate for CTS */
uint8_t ibp_try1; /* series 2 try count */
uint8_t ibp_rate1; /* series 2 IEEE tx rate */
uint8_t ibp_try2; /* series 3 try count */
uint8_t ibp_rate2; /* series 3 IEEE tx rate */
uint8_t ibp_try3; /* series 4 try count */
uint8_t ibp_rate3; /* series 4 IEEE tx rate */
};
#endif /* _NET80211_IEEE80211_FREEBSD_H_ */
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