| ieee80211_scan_sta.c (186302) | ieee80211_scan_sta.c (186904) |
|---|---|
| 1/*- | 1/*- |
| 2 * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting | 2 * Copyright (c) 2002-2009 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 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright --- 8 unchanged lines hidden (view full) --- 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 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> | 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 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright --- 8 unchanged lines hidden (view full) --- 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 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__FBSDID("$FreeBSD: head/sys/net80211/ieee80211_scan_sta.c 186302 2008-12-18 23:00:09Z sam $"); | 27__FBSDID("$FreeBSD: head/sys/net80211/ieee80211_scan_sta.c 186904 2009-01-08 17:12:47Z sam $"); |
| 28 29/* 30 * IEEE 802.11 station scanning support. 31 */ 32#include "opt_wlan.h" 33 34#include <sys/param.h> 35#include <sys/systm.h> --- 4 unchanged lines hidden (view full) --- 40 41#include <net/if.h> 42#include <net/if_media.h> 43#include <net/ethernet.h> 44 45#include <net80211/ieee80211_var.h> 46#include <net80211/ieee80211_input.h> 47#include <net80211/ieee80211_regdomain.h> | 28 29/* 30 * IEEE 802.11 station scanning support. 31 */ 32#include "opt_wlan.h" 33 34#include <sys/param.h> 35#include <sys/systm.h> --- 4 unchanged lines hidden (view full) --- 40 41#include <net/if.h> 42#include <net/if_media.h> 43#include <net/ethernet.h> 44 45#include <net80211/ieee80211_var.h> 46#include <net80211/ieee80211_input.h> 47#include <net80211/ieee80211_regdomain.h> |
| 48#ifdef IEEE80211_SUPPORT_TDMA 49#include <net80211/ieee80211_tdma.h> 50#endif |
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| 48 49#include <net/bpf.h> 50 51/* 52 * Parameters for managing cache entries: 53 * 54 * o a station with STA_FAILS_MAX failures is not considered 55 * when picking a candidate --- 58 unchanged lines hidden (view full) --- 114#define MATCH_PRIVACY 0x0004 /* privacy mismatch */ 115#define MATCH_RATE 0x0008 /* rate set mismatch */ 116#define MATCH_SSID 0x0010 /* ssid mismatch */ 117#define MATCH_BSSID 0x0020 /* bssid mismatch */ 118#define MATCH_FAILS 0x0040 /* too many failed auth attempts */ 119#define MATCH_NOTSEEN 0x0080 /* not seen in recent scans */ 120#define MATCH_RSSI 0x0100 /* rssi deemed too low to use */ 121#define MATCH_CC 0x0200 /* country code mismatch */ | 51 52#include <net/bpf.h> 53 54/* 55 * Parameters for managing cache entries: 56 * 57 * o a station with STA_FAILS_MAX failures is not considered 58 * when picking a candidate --- 58 unchanged lines hidden (view full) --- 117#define MATCH_PRIVACY 0x0004 /* privacy mismatch */ 118#define MATCH_RATE 0x0008 /* rate set mismatch */ 119#define MATCH_SSID 0x0010 /* ssid mismatch */ 120#define MATCH_BSSID 0x0020 /* bssid mismatch */ 121#define MATCH_FAILS 0x0040 /* too many failed auth attempts */ 122#define MATCH_NOTSEEN 0x0080 /* not seen in recent scans */ 123#define MATCH_RSSI 0x0100 /* rssi deemed too low to use */ 124#define MATCH_CC 0x0200 /* country code mismatch */ |
| 125#define MATCH_TDMA_NOIE 0x0400 /* no TDMA ie */ 126#define MATCH_TDMA_NOTMASTER 0x0800 /* not TDMA master */ 127#define MATCH_TDMA_NOSLOT 0x1000 /* all TDMA slots occupied */ 128#define MATCH_TDMA_LOCAL 0x2000 /* local address */ |
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| 122static int match_bss(struct ieee80211vap *, 123 const struct ieee80211_scan_state *, struct sta_entry *, int); 124static void adhoc_age(struct ieee80211_scan_state *); 125 126static __inline int 127isocmp(const uint8_t cc1[], const uint8_t cc2[]) 128{ 129 return (cc1[0] == cc2[0] && cc1[1] == cc2[1]); --- 735 unchanged lines hidden (view full) --- 865 for (i = 0; i < nssid; i++) { 866 if (ie[1] == ssids[i].len && 867 memcmp(ie+2, ssids[i].ssid, ie[1]) == 0) 868 return 1; 869 } 870 return 0; 871} 872 | 129static int match_bss(struct ieee80211vap *, 130 const struct ieee80211_scan_state *, struct sta_entry *, int); 131static void adhoc_age(struct ieee80211_scan_state *); 132 133static __inline int 134isocmp(const uint8_t cc1[], const uint8_t cc2[]) 135{ 136 return (cc1[0] == cc2[0] && cc1[1] == cc2[1]); --- 735 unchanged lines hidden (view full) --- 872 for (i = 0; i < nssid; i++) { 873 if (ie[1] == ssids[i].len && 874 memcmp(ie+2, ssids[i].ssid, ie[1]) == 0) 875 return 1; 876 } 877 return 0; 878} 879 |
| 880#ifdef IEEE80211_SUPPORT_TDMA 881static int 882tdma_isfull(const struct ieee80211_tdma_param *tdma) 883{ 884 int slot, slotcnt; 885 886 slotcnt = tdma->tdma_slotcnt; 887 for (slot = slotcnt-1; slot >= 0; slot--) 888 if (isclr(tdma->tdma_inuse, slot)) 889 return 0; 890 return 1; 891} 892#endif /* IEEE80211_SUPPORT_TDMA */ 893 |
|
| 873/* 874 * Test a scan candidate for suitability/compatibility. 875 */ 876static int 877match_bss(struct ieee80211vap *vap, 878 const struct ieee80211_scan_state *ss, struct sta_entry *se0, 879 int debug) 880{ --- 14 unchanged lines hidden (view full) --- 895 */ 896 if (vap->iv_des_mode != IEEE80211_MODE_AUTO && 897 (se->se_chan->ic_flags & IEEE80211_CHAN_ALLTURBO) != 898 chanflags[vap->iv_des_mode]) 899 fail |= MATCH_CHANNEL; 900 if (vap->iv_opmode == IEEE80211_M_IBSS) { 901 if ((se->se_capinfo & IEEE80211_CAPINFO_IBSS) == 0) 902 fail |= MATCH_CAPINFO; | 894/* 895 * Test a scan candidate for suitability/compatibility. 896 */ 897static int 898match_bss(struct ieee80211vap *vap, 899 const struct ieee80211_scan_state *ss, struct sta_entry *se0, 900 int debug) 901{ --- 14 unchanged lines hidden (view full) --- 916 */ 917 if (vap->iv_des_mode != IEEE80211_MODE_AUTO && 918 (se->se_chan->ic_flags & IEEE80211_CHAN_ALLTURBO) != 919 chanflags[vap->iv_des_mode]) 920 fail |= MATCH_CHANNEL; 921 if (vap->iv_opmode == IEEE80211_M_IBSS) { 922 if ((se->se_capinfo & IEEE80211_CAPINFO_IBSS) == 0) 923 fail |= MATCH_CAPINFO; |
| 924#ifdef IEEE80211_SUPPORT_TDMA 925 } else if (vap->iv_opmode == IEEE80211_M_AHDEMO) { 926 /* 927 * Adhoc demo network setup shouldn't really be scanning 928 * but just in case skip stations operating in IBSS or 929 * BSS mode. 930 */ 931 if (se->se_capinfo & (IEEE80211_CAPINFO_IBSS|IEEE80211_CAPINFO_ESS)) 932 fail |= MATCH_CAPINFO; 933 /* 934 * TDMA operation cannot coexist with a normal 802.11 network; 935 * skip if IBSS or ESS capabilities are marked and require 936 * the beacon have a TDMA ie present. 937 */ 938 if (vap->iv_caps & IEEE80211_C_TDMA) { 939 const struct ieee80211_tdma_param *tdma = 940 (const struct ieee80211_tdma_param *)se->se_ies.tdma_ie; 941 942 if (tdma == NULL) 943 fail |= MATCH_TDMA_NOIE; 944 else if (tdma->tdma_slot != 0) 945 fail |= MATCH_TDMA_NOTMASTER; 946 else if (tdma_isfull(tdma)) 947 fail |= MATCH_TDMA_NOSLOT; 948#if 0 949 else if (ieee80211_local_address(se->se_macaddr)) 950 fail |= MATCH_TDMA_LOCAL; 951#endif 952 } 953#endif /* IEEE80211_SUPPORT_TDMA */ |
|
| 903 } else { 904 if ((se->se_capinfo & IEEE80211_CAPINFO_ESS) == 0) 905 fail |= MATCH_CAPINFO; 906 /* 907 * If 11d is enabled and we're attempting to join a bss 908 * that advertises it's country code then compare our 909 * current settings to what we fetched from the country ie. 910 * If our country code is unspecified or different then do --- 61 unchanged lines hidden (view full) --- 972 if (se->se_rssi < STA_RSSI_MIN) 973 fail |= MATCH_RSSI; 974#ifdef IEEE80211_DEBUG 975 if (ieee80211_msg(vap, debug)) { 976 printf(" %c %s", 977 fail & MATCH_FAILS ? '=' : 978 fail & MATCH_NOTSEEN ? '^' : 979 fail & MATCH_CC ? '$' : | 954 } else { 955 if ((se->se_capinfo & IEEE80211_CAPINFO_ESS) == 0) 956 fail |= MATCH_CAPINFO; 957 /* 958 * If 11d is enabled and we're attempting to join a bss 959 * that advertises it's country code then compare our 960 * current settings to what we fetched from the country ie. 961 * If our country code is unspecified or different then do --- 61 unchanged lines hidden (view full) --- 1023 if (se->se_rssi < STA_RSSI_MIN) 1024 fail |= MATCH_RSSI; 1025#ifdef IEEE80211_DEBUG 1026 if (ieee80211_msg(vap, debug)) { 1027 printf(" %c %s", 1028 fail & MATCH_FAILS ? '=' : 1029 fail & MATCH_NOTSEEN ? '^' : 1030 fail & MATCH_CC ? '$' : |
| 1031#ifdef IEEE80211_SUPPORT_TDMA 1032 fail & MATCH_TDMA_NOIE ? '&' : 1033 fail & MATCH_TDMA_NOTMASTER ? ':' : 1034 fail & MATCH_TDMA_NOSLOT ? '@' : 1035 fail & MATCH_TDMA_LOCAL ? '#' : 1036#endif |
|
| 980 fail ? '-' : '+', ether_sprintf(se->se_macaddr)); 981 printf(" %s%c", ether_sprintf(se->se_bssid), 982 fail & MATCH_BSSID ? '!' : ' '); 983 printf(" %3d%c", ieee80211_chan2ieee(ic, se->se_chan), 984 fail & MATCH_CHANNEL ? '!' : ' '); 985 printf(" %+4d%c", se->se_rssi, fail & MATCH_RSSI ? '!' : ' '); 986 printf(" %2dM%c", (rate & IEEE80211_RATE_VAL) / 2, 987 fail & MATCH_RATE ? '!' : ' '); --- 456 unchanged lines hidden (view full) --- 1444 */ 1445 /* NB: unlocked read should be ok */ 1446 if (TAILQ_FIRST(&st->st_entry) == NULL) { 1447 IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, 1448 "%s: no scan candidate\n", __func__); 1449 if (ss->ss_flags & IEEE80211_SCAN_NOJOIN) 1450 return 0; 1451notfound: | 1037 fail ? '-' : '+', ether_sprintf(se->se_macaddr)); 1038 printf(" %s%c", ether_sprintf(se->se_bssid), 1039 fail & MATCH_BSSID ? '!' : ' '); 1040 printf(" %3d%c", ieee80211_chan2ieee(ic, se->se_chan), 1041 fail & MATCH_CHANNEL ? '!' : ' '); 1042 printf(" %+4d%c", se->se_rssi, fail & MATCH_RSSI ? '!' : ' '); 1043 printf(" %2dM%c", (rate & IEEE80211_RATE_VAL) / 2, 1044 fail & MATCH_RATE ? '!' : ' '); --- 456 unchanged lines hidden (view full) --- 1501 */ 1502 /* NB: unlocked read should be ok */ 1503 if (TAILQ_FIRST(&st->st_entry) == NULL) { 1504 IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, 1505 "%s: no scan candidate\n", __func__); 1506 if (ss->ss_flags & IEEE80211_SCAN_NOJOIN) 1507 return 0; 1508notfound: |
| 1509 /* NB: never auto-start a tdma network for slot !0 */ 1510#ifdef IEEE80211_SUPPORT_TDMA 1511 if (vap->iv_des_nssid && 1512 ((vap->iv_caps & IEEE80211_C_TDMA) == 0 || 1513 ieee80211_tdma_getslot(vap) == 0)) { 1514#else |
|
| 1452 if (vap->iv_des_nssid) { | 1515 if (vap->iv_des_nssid) { |
| 1516#endif |
|
| 1453 /* 1454 * No existing adhoc network to join and we have 1455 * an ssid; start one up. If no channel was 1456 * specified, try to select a channel. 1457 */ 1458 if (vap->iv_des_chan == IEEE80211_CHAN_ANYC || 1459 IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan)) { 1460 struct ieee80211com *ic = vap->iv_ic; --- 233 unchanged lines hidden --- | 1517 /* 1518 * No existing adhoc network to join and we have 1519 * an ssid; start one up. If no channel was 1520 * specified, try to select a channel. 1521 */ 1522 if (vap->iv_des_chan == IEEE80211_CHAN_ANYC || 1523 IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan)) { 1524 struct ieee80211com *ic = vap->iv_ic; --- 233 unchanged lines hidden --- |