diff options
Diffstat (limited to 'sys/net80211/ieee80211_input.h')
| -rw-r--r-- | sys/net80211/ieee80211_input.h | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/sys/net80211/ieee80211_input.h b/sys/net80211/ieee80211_input.h new file mode 100644 index 0000000..dd41d7c --- /dev/null +++ b/sys/net80211/ieee80211_input.h @@ -0,0 +1,156 @@ +/*- + * Copyright (c) 2007-2008 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_INPUT_H_ +#define _NET80211_IEEE80211_INPUT_H_ + +/* Verify the existence and length of __elem or get out. */ +#define IEEE80211_VERIFY_ELEMENT(__elem, __maxlen, _action) do { \ + if ((__elem) == NULL) { \ + IEEE80211_DISCARD(vap, IEEE80211_MSG_ELEMID, \ + wh, NULL, "%s", "no " #__elem ); \ + vap->iv_stats.is_rx_elem_missing++; \ + _action; \ + } else if ((__elem)[1] > (__maxlen)) { \ + IEEE80211_DISCARD(vap, IEEE80211_MSG_ELEMID, \ + wh, NULL, "bad " #__elem " len %d", (__elem)[1]); \ + vap->iv_stats.is_rx_elem_toobig++; \ + _action; \ + } \ +} while (0) + +#define IEEE80211_VERIFY_LENGTH(_len, _minlen, _action) do { \ + if ((_len) < (_minlen)) { \ + IEEE80211_DISCARD(vap, IEEE80211_MSG_ELEMID, \ + wh, NULL, "ie too short, got %d, expected %d", \ + (_len), (_minlen)); \ + vap->iv_stats.is_rx_elem_toosmall++; \ + _action; \ + } \ +} while (0) + +#ifdef IEEE80211_DEBUG +void ieee80211_ssid_mismatch(struct ieee80211vap *, const char *tag, + uint8_t mac[IEEE80211_ADDR_LEN], uint8_t *ssid); + +#define IEEE80211_VERIFY_SSID(_ni, _ssid, _action) do { \ + if ((_ssid)[1] != 0 && \ + ((_ssid)[1] != (_ni)->ni_esslen || \ + memcmp((_ssid) + 2, (_ni)->ni_essid, (_ssid)[1]) != 0)) { \ + if (ieee80211_msg_input(vap)) \ + ieee80211_ssid_mismatch(vap, \ + ieee80211_mgt_subtype_name[subtype >> \ + IEEE80211_FC0_SUBTYPE_SHIFT], \ + wh->i_addr2, _ssid); \ + vap->iv_stats.is_rx_ssidmismatch++; \ + _action; \ + } \ +} while (0) +#else /* !IEEE80211_DEBUG */ +#define IEEE80211_VERIFY_SSID(_ni, _ssid, _action) do { \ + if ((_ssid)[1] != 0 && \ + ((_ssid)[1] != (_ni)->ni_esslen || \ + memcmp((_ssid) + 2, (_ni)->ni_essid, (_ssid)[1]) != 0)) { \ + vap->iv_stats.is_rx_ssidmismatch++; \ + _action; \ + } \ +} while (0) +#endif /* !IEEE80211_DEBUG */ + +/* unalligned little endian access */ +#define LE_READ_2(p) \ + ((uint16_t) \ + ((((const uint8_t *)(p))[0] ) | \ + (((const uint8_t *)(p))[1] << 8))) +#define LE_READ_4(p) \ + ((uint32_t) \ + ((((const uint8_t *)(p))[0] ) | \ + (((const uint8_t *)(p))[1] << 8) | \ + (((const uint8_t *)(p))[2] << 16) | \ + (((const uint8_t *)(p))[3] << 24))) + +static __inline int +iswpaoui(const uint8_t *frm) +{ + return frm[1] > 3 && LE_READ_4(frm+2) == ((WPA_OUI_TYPE<<24)|WPA_OUI); +} + +static __inline int +iswmeoui(const uint8_t *frm) +{ + return frm[1] > 3 && LE_READ_4(frm+2) == ((WME_OUI_TYPE<<24)|WME_OUI); +} + +static __inline int +iswmeparam(const uint8_t *frm) +{ + return frm[1] > 5 && LE_READ_4(frm+2) == ((WME_OUI_TYPE<<24)|WME_OUI) && + frm[6] == WME_PARAM_OUI_SUBTYPE; +} + +static __inline int +iswmeinfo(const uint8_t *frm) +{ + return frm[1] > 5 && LE_READ_4(frm+2) == ((WME_OUI_TYPE<<24)|WME_OUI) && + frm[6] == WME_INFO_OUI_SUBTYPE; +} + +static __inline int +isatherosoui(const uint8_t *frm) +{ + return frm[1] > 3 && LE_READ_4(frm+2) == ((ATH_OUI_TYPE<<24)|ATH_OUI); +} + +static __inline int +ishtcapoui(const uint8_t *frm) +{ + return frm[1] > 3 && LE_READ_4(frm+2) == ((BCM_OUI_HTCAP<<24)|BCM_OUI); +} + +static __inline int +ishtinfooui(const uint8_t *frm) +{ + return frm[1] > 3 && LE_READ_4(frm+2) == ((BCM_OUI_HTINFO<<24)|BCM_OUI); +} + +void ieee80211_deliver_data(struct ieee80211vap *, + struct ieee80211_node *, struct mbuf *); +struct mbuf *ieee80211_defrag(struct ieee80211_node *, + struct mbuf *, int); +struct mbuf *ieee80211_decap(struct ieee80211vap *, struct mbuf *, int); +struct mbuf *ieee80211_decap1(struct mbuf *, int *); +struct mbuf *ieee80211_decap_fastframe(struct ieee80211_node *, + struct mbuf *); +int ieee80211_setup_rates(struct ieee80211_node *ni, + const uint8_t *rates, const uint8_t *xrates, int flags); +void ieee80211_send_error(struct ieee80211_node *, + const uint8_t mac[IEEE80211_ADDR_LEN], int subtype, int arg); +int ieee80211_alloc_challenge(struct ieee80211_node *); +void ieee80211_parse_ath(struct ieee80211_node *, uint8_t *); +int ieee80211_parse_beacon(struct ieee80211_node *, struct mbuf *, + struct ieee80211_scanparams *); +int ieee80211_parse_action(struct ieee80211_node *, struct mbuf *); +#endif /* _NET80211_IEEE80211_INPUT_H_ */ |
