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ieee80211_sta.c (298376) ieee80211_sta.c (299575)
1/*-
2 * Copyright (c) 2007-2008 Sam Leffler, Errno Consulting
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

--- 11 unchanged lines hidden (view full) ---

20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include <sys/cdefs.h>
27#ifdef __FreeBSD__
1/*-
2 * Copyright (c) 2007-2008 Sam Leffler, Errno Consulting
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

--- 11 unchanged lines hidden (view full) ---

20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include <sys/cdefs.h>
27#ifdef __FreeBSD__
28__FBSDID("$FreeBSD: head/sys/net80211/ieee80211_sta.c 298376 2016-04-20 21:15:55Z avos $");
28__FBSDID("$FreeBSD: head/sys/net80211/ieee80211_sta.c 299575 2016-05-12 22:17:00Z avos $");
29#endif
30
31/*
32 * IEEE 802.11 Station mode support.
33 */
34#include "opt_inet.h"
35#include "opt_wlan.h"
36

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971
972static void
973sta_auth_shared(struct ieee80211_node *ni, struct ieee80211_frame *wh,
974 uint8_t *frm, uint8_t *efrm, int rssi, int nf,
975 uint16_t seq, uint16_t status)
976{
977 struct ieee80211vap *vap = ni->ni_vap;
978 uint8_t *challenge;
29#endif
30
31/*
32 * IEEE 802.11 Station mode support.
33 */
34#include "opt_inet.h"
35#include "opt_wlan.h"
36

--- 934 unchanged lines hidden (view full) ---

971
972static void
973sta_auth_shared(struct ieee80211_node *ni, struct ieee80211_frame *wh,
974 uint8_t *frm, uint8_t *efrm, int rssi, int nf,
975 uint16_t seq, uint16_t status)
976{
977 struct ieee80211vap *vap = ni->ni_vap;
978 uint8_t *challenge;
979 int estatus;
980
981 /*
982 * NB: this can happen as we allow pre-shared key
983 * authentication to be enabled w/o wep being turned
984 * on so that configuration of these can be done
985 * in any order. It may be better to enforce the
986 * ordering in which case this check would just be
987 * for sanity/consistency.
988 */
989 if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) {
990 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
991 ni->ni_macaddr, "shared key auth",
992 "%s", " PRIVACY is disabled");
979
980 /*
981 * NB: this can happen as we allow pre-shared key
982 * authentication to be enabled w/o wep being turned
983 * on so that configuration of these can be done
984 * in any order. It may be better to enforce the
985 * ordering in which case this check would just be
986 * for sanity/consistency.
987 */
988 if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) {
989 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
990 ni->ni_macaddr, "shared key auth",
991 "%s", " PRIVACY is disabled");
993 estatus = IEEE80211_STATUS_ALG;
994 goto bad;
995 }
996 /*
997 * Pre-shared key authentication is evil; accept
998 * it only if explicitly configured (it is supported
999 * mainly for compatibility with clients like OS X).
1000 */
1001 if (ni->ni_authmode != IEEE80211_AUTH_AUTO &&
1002 ni->ni_authmode != IEEE80211_AUTH_SHARED) {
1003 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
1004 ni->ni_macaddr, "shared key auth",
1005 "bad sta auth mode %u", ni->ni_authmode);
1006 vap->iv_stats.is_rx_bad_auth++; /* XXX maybe a unique error? */
992 goto bad;
993 }
994 /*
995 * Pre-shared key authentication is evil; accept
996 * it only if explicitly configured (it is supported
997 * mainly for compatibility with clients like OS X).
998 */
999 if (ni->ni_authmode != IEEE80211_AUTH_AUTO &&
1000 ni->ni_authmode != IEEE80211_AUTH_SHARED) {
1001 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
1002 ni->ni_macaddr, "shared key auth",
1003 "bad sta auth mode %u", ni->ni_authmode);
1004 vap->iv_stats.is_rx_bad_auth++; /* XXX maybe a unique error? */
1007 estatus = IEEE80211_STATUS_ALG;
1008 goto bad;
1009 }
1010
1011 challenge = NULL;
1012 if (frm + 1 < efrm) {
1013 if ((frm[1] + 2) > (efrm - frm)) {
1014 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
1015 ni->ni_macaddr, "shared key auth",
1016 "ie %d/%d too long",
1017 frm[0], (frm[1] + 2) - (efrm - frm));
1018 vap->iv_stats.is_rx_bad_auth++;
1005 goto bad;
1006 }
1007
1008 challenge = NULL;
1009 if (frm + 1 < efrm) {
1010 if ((frm[1] + 2) > (efrm - frm)) {
1011 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
1012 ni->ni_macaddr, "shared key auth",
1013 "ie %d/%d too long",
1014 frm[0], (frm[1] + 2) - (efrm - frm));
1015 vap->iv_stats.is_rx_bad_auth++;
1019 estatus = IEEE80211_STATUS_CHALLENGE;
1020 goto bad;
1021 }
1022 if (*frm == IEEE80211_ELEMID_CHALLENGE)
1023 challenge = frm;
1024 frm += frm[1] + 2;
1025 }
1026 switch (seq) {
1027 case IEEE80211_AUTH_SHARED_CHALLENGE:
1028 case IEEE80211_AUTH_SHARED_RESPONSE:
1029 if (challenge == NULL) {
1030 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
1031 ni->ni_macaddr, "shared key auth",
1032 "%s", "no challenge");
1033 vap->iv_stats.is_rx_bad_auth++;
1016 goto bad;
1017 }
1018 if (*frm == IEEE80211_ELEMID_CHALLENGE)
1019 challenge = frm;
1020 frm += frm[1] + 2;
1021 }
1022 switch (seq) {
1023 case IEEE80211_AUTH_SHARED_CHALLENGE:
1024 case IEEE80211_AUTH_SHARED_RESPONSE:
1025 if (challenge == NULL) {
1026 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
1027 ni->ni_macaddr, "shared key auth",
1028 "%s", "no challenge");
1029 vap->iv_stats.is_rx_bad_auth++;
1034 estatus = IEEE80211_STATUS_CHALLENGE;
1035 goto bad;
1036 }
1037 if (challenge[1] != IEEE80211_CHALLENGE_LEN) {
1038 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
1039 ni->ni_macaddr, "shared key auth",
1040 "bad challenge len %d", challenge[1]);
1041 vap->iv_stats.is_rx_bad_auth++;
1030 goto bad;
1031 }
1032 if (challenge[1] != IEEE80211_CHALLENGE_LEN) {
1033 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
1034 ni->ni_macaddr, "shared key auth",
1035 "bad challenge len %d", challenge[1]);
1036 vap->iv_stats.is_rx_bad_auth++;
1042 estatus = IEEE80211_STATUS_CHALLENGE;
1043 goto bad;
1044 }
1045 default:
1046 break;
1047 }
1048 if (vap->iv_state != IEEE80211_S_AUTH)
1049 return;
1050 switch (seq) {

--- 225 unchanged lines hidden (view full) ---

1276 ieee80211_time_after(ticks, ic->ic_lastdata + vap->iv_bgscanidle));
1277}
1278
1279static void
1280sta_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype,
1281 const struct ieee80211_rx_stats *rxs,
1282 int rssi, int nf)
1283{
1037 goto bad;
1038 }
1039 default:
1040 break;
1041 }
1042 if (vap->iv_state != IEEE80211_S_AUTH)
1043 return;
1044 switch (seq) {

--- 225 unchanged lines hidden (view full) ---

1270 ieee80211_time_after(ticks, ic->ic_lastdata + vap->iv_bgscanidle));
1271}
1272
1273static void
1274sta_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype,
1275 const struct ieee80211_rx_stats *rxs,
1276 int rssi, int nf)
1277{
1284#define ISPROBE(_st) ((_st) == IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1285#define ISREASSOC(_st) ((_st) == IEEE80211_FC0_SUBTYPE_REASSOC_RESP)
1286 struct ieee80211vap *vap = ni->ni_vap;
1287 struct ieee80211com *ic = ni->ni_ic;
1288 struct ieee80211_channel *rxchan = ic->ic_curchan;
1289 struct ieee80211_frame *wh;
1290 uint8_t *frm, *efrm;
1291 uint8_t *rates, *xrates, *wme, *htcap, *htinfo;
1292 uint8_t rate;

--- 563 unchanged lines hidden (view full) ---

1856
1857 default:
1858 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
1859 wh, "mgt", "subtype 0x%x not handled", subtype);
1860 vap->iv_stats.is_rx_badsubtype++;
1861 break;
1862 }
1863#undef ISREASSOC
1278#define ISREASSOC(_st) ((_st) == IEEE80211_FC0_SUBTYPE_REASSOC_RESP)
1279 struct ieee80211vap *vap = ni->ni_vap;
1280 struct ieee80211com *ic = ni->ni_ic;
1281 struct ieee80211_channel *rxchan = ic->ic_curchan;
1282 struct ieee80211_frame *wh;
1283 uint8_t *frm, *efrm;
1284 uint8_t *rates, *xrates, *wme, *htcap, *htinfo;
1285 uint8_t rate;

--- 563 unchanged lines hidden (view full) ---

1849
1850 default:
1851 IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
1852 wh, "mgt", "subtype 0x%x not handled", subtype);
1853 vap->iv_stats.is_rx_badsubtype++;
1854 break;
1855 }
1856#undef ISREASSOC
1864#undef ISPROBE
1865}
1866
1867static void
1868sta_recv_ctl(struct ieee80211_node *ni, struct mbuf *m, int subtype)
1869{
1870 switch (subtype) {
1871 case IEEE80211_FC0_SUBTYPE_BAR:
1872 ieee80211_recv_bar(ni, m);
1873 break;
1874 }
1875}
1857}
1858
1859static void
1860sta_recv_ctl(struct ieee80211_node *ni, struct mbuf *m, int subtype)
1861{
1862 switch (subtype) {
1863 case IEEE80211_FC0_SUBTYPE_BAR:
1864 ieee80211_recv_bar(ni, m);
1865 break;
1866 }
1867}