/* * Wireless utility functions * * Copyright 2007-2009 Johannes Berg * Copyright 2013-2014 Intel Mobile Communications GmbH */ #include #include #include #include #include #include #include #include #include #include "core.h" #include "rdev-ops.h" struct ieee80211_rate * ieee80211_get_response_rate(struct ieee80211_supported_band *sband, u32 basic_rates, int bitrate) { struct ieee80211_rate *result = &sband->bitrates[0]; int i; for (i = 0; i < sband->n_bitrates; i++) { if (!(basic_rates & BIT(i))) continue; if (sband->bitrates[i].bitrate > bitrate) continue; result = &sband->bitrates[i]; } return result; } EXPORT_SYMBOL(ieee80211_get_response_rate); u32 ieee80211_mandatory_rates(struct ieee80211_supported_band *sband, enum nl80211_bss_scan_width scan_width) { struct ieee80211_rate *bitrates; u32 mandatory_rates = 0; enum ieee80211_rate_flags mandatory_flag; int i; if (WARN_ON(!sband)) return 1; if (sband->band == IEEE80211_BAND_2GHZ) { if (scan_width == NL80211_BSS_CHAN_WIDTH_5 || scan_width == NL80211_BSS_CHAN_WIDTH_10) mandatory_flag = IEEE80211_RATE_MANDATORY_G; else mandatory_flag = IEEE80211_RATE_MANDATORY_B; } else { mandatory_flag = IEEE80211_RATE_MANDATORY_A; } bitrates = sband->bitrates; for (i = 0; i < sband->n_bitrates; i++) if (bitrates[i].flags & mandatory_flag) mandatory_rates |= BIT(i); return mandatory_rates; } EXPORT_SYMBOL(ieee80211_mandatory_rates); int ieee80211_channel_to_frequency(int chan, enum ieee80211_band band) { /* see 802.11 17.3.8.3.2 and Annex J * there are overlapping channel numbers in 5GHz and 2GHz bands */ if (chan <= 0) return 0; /* not supported */ switch (band) { case IEEE80211_BAND_2GHZ: if (chan == 14) return 2484; else if (chan < 14) return 2407 + chan * 5; break; case IEEE80211_BAND_5GHZ: if (chan >= 182 && chan <= 196) return 4000 + chan * 5; else return 5000 + chan * 5; break; case IEEE80211_BAND_60GHZ: if (chan < 5) return 56160 + chan * 2160; break; default: ; } return 0; /* not supported */ } EXPORT_SYMBOL(ieee80211_channel_to_frequency); int ieee80211_frequency_to_channel(int freq) { /* see 802.11 17.3.8.3.2 and Annex J */ if (freq == 2484) return 14; else if (freq < 2484) return (freq - 2407) / 5; else if (freq >= 4910 && freq <= 4980) return (freq - 4000) / 5; else if (freq <= 45000) /* DMG band lower limit */ return (freq - 5000) / 5; else if (freq >= 58320 && freq <= 64800) return (freq - 56160) / 2160; else return 0; } EXPORT_SYMBOL(ieee80211_frequency_to_channel); struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy, int freq) { enum ieee80211_band band; struct ieee80211_supported_band *sband; int i; for (band = 0; band < IEEE80211_NUM_BANDS; band++) { sband = wiphy->bands[band]; if (!sband) continue; for (i = 0; i < sband->n_channels; i++) { if (sband->channels[i].center_freq == freq) return &sband->channels[i]; } } return NULL; } EXPORT_SYMBOL(__ieee80211_get_channel); static void set_mandatory_flags_band(struct ieee80211_supported_band *sband, enum ieee80211_band band) { int i, want; switch (band) { case IEEE80211_BAND_5GHZ: want = 3; for (i = 0; i < sband->n_bitrates; i++) { if (sband->bitrates[i].bitrate == 60 || sband->bitrates[i].bitrate == 120 || sband->bitrates[i].bitrate == 240) { sband->bitrates[i].flags |= IEEE80211_RATE_MANDATORY_A; want--; } } WARN_ON(want); break; case IEEE80211_BAND_2GHZ: want = 7; for (i = 0; i < sband->n_bitrates; i++) { if (sband->bitrates[i].bitrate == 10) { sband->bitrates[i].flags |= IEEE80211_RATE_MANDATORY_B | IEEE80211_RATE_MANDATORY_G; want--; } if (sband->bitrates[i].bitrate == 20 || sband->bitrates[i].bitrate == 55 || sband->bitrates[i].bitrate == 110 || sband->bitrates[i].bitrate == 60 || sband->bitrates[i].bitrate == 120 || sband->bitrates[i].bitrate == 240) { sband->bitrates[i].flags |= IEEE80211_RATE_MANDATORY_G; want--; } if (sband->bitrates[i].bitrate != 10 && sband->bitrates[i].bitrate != 20 && sband->bitrates[i].bitrate != 55 && sband->bitrates[i].bitrate != 110) sband->bitrates[i].flags |= IEEE80211_RATE_ERP_G; } WARN_ON(want != 0 
import os
import sys
import yaml

def exec_cmd(cmd):
    print cmd
    os.system(cmd)

def rename_nics(dha_info, rsa_file, compass_ip):
    for host in dha_info['hosts']:
        host_name = host['name']
        interfaces = host.get('interfaces')
        if interfaces:
            for interface in interfaces:
                nic_name = interface.keys()[0]
                mac = interface.values()[0]

                exec_cmd("ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
                          -i %s root@%s \
                          'cobbler system edit --name=%s --interface=%s --mac=%s --interface_type=static'" \
                          % (rsa_file, compass_ip, host_name, nic_name, mac))

    exec_cmd("ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
              -i %s root@%s \
              'cobbler sync'" % (rsa_file, compass_ip))

if __name__ == "__main__":
    assert(len(sys.argv) == 4)
    rename_nics(yaml.load(open(sys.argv[1])), sys.argv[2], sys.argv[3])
/* Given a data frame determine the 802.1p/1d tag to use. */ unsigned int cfg80211_classify8021d(struct sk_buff *skb, struct cfg80211_qos_map *qos_map) { unsigned int dscp; unsigned char vlan_priority; /* skb->priority values from 256->263 are magic values to * directly indicate a specific 802.1d priority. This is used * to allow 802.1d priority to be passed directly in from VLAN * tags, etc. */ if (skb->priority >= 256 && skb->priority <= 263) return skb->priority - 256; if (skb_vlan_tag_present(skb)) { vlan_priority = (skb_vlan_tag_get(skb) & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT; if (vlan_priority > 0) return vlan_priority; } switch (skb->protocol) { case htons(ETH_P_IP): dscp = ipv4_get_dsfield(ip_hdr(skb)) & 0xfc; break; case htons(ETH_P_IPV6): dscp = ipv6_get_dsfield(ipv6_hdr(skb)) & 0xfc; break; case htons(ETH_P_MPLS_UC): case htons(ETH_P_MPLS_MC): { struct mpls_label mpls_tmp, *mpls; mpls = skb_header_pointer(skb, sizeof(struct ethhdr), sizeof(*mpls), &mpls_tmp); if (!mpls) return 0; return (ntohl(mpls->entry) & MPLS_LS_TC_MASK) >> MPLS_LS_TC_SHIFT; } case htons(ETH_P_80221): /* 802.21 is always network control traffic */ return 7; default: return 0; } if (qos_map) { unsigned int i, tmp_dscp = dscp >> 2; for (i = 0; i < qos_map->num_des; i++) { if (tmp_dscp == qos_map->dscp_exception[i].dscp) return qos_map->dscp_exception[i].up; } for (i = 0; i < 8; i++) { if (tmp_dscp >= qos_map->up[i].low && tmp_dscp <= qos_map->up[i].high) return i; } } return dscp >> 5; } EXPORT_SYMBOL(cfg80211_classify8021d); const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie) { const struct cfg80211_bss_ies *ies; ies = rcu_dereference(bss->ies); if (!ies) return NULL; return cfg80211_find_ie(ie, ies->data, ies->len); } EXPORT_SYMBOL(ieee80211_bss_get_ie); void cfg80211_upload_connect_keys(struct wireless_dev *wdev) { struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); struct net_device *dev = wdev->netdev; int i; if (!wdev->connect_keys) return; for (i = 0; i < 6; i++) { if (!wdev->connect_keys->params[i].cipher) continue; if (rdev_add_key(rdev, dev, i, false, NULL, &wdev->connect_keys->params[i])) { netdev_err(dev, "failed to set key %d\n", i); continue; } if (wdev->connect_keys->def == i) if (rdev_set_default_key(rdev, dev, i, true, true)) { netdev_err(dev, "failed to set defkey %d\n", i); continue; } if (wdev->connect_keys->defmgmt == i) if (rdev_set_default_mgmt_key(rdev, dev, i)) netdev_err(dev, "failed to set mgtdef %d\n", i); } kzfree(wdev->connect_keys); wdev->connect_keys = NULL; } void cfg80211_process_wdev_events(struct wireless_dev *wdev) { struct cfg80211_event *ev; unsigned long flags; const u8 *bssid = NULL; spin_lock_irqsave(&wdev->event_lock, flags); while (!list_empty(&wdev->event_list)) { ev = list_first_entry(&wdev->event_list, struct cfg80211_event, list); list_del(&ev->list); spin_unlock_irqrestore(&wdev->event_lock, flags); wdev_lock(wdev); switch (ev->type) { case EVENT_CONNECT_RESULT: if (!is_zero_ether_addr(ev->cr.bssid)) bssid = ev->cr.bssid; __cfg80211_connect_result( wdev->netdev, bssid, ev->cr.req_ie, ev->cr.req_ie_len, ev->cr.resp_ie, ev->cr.resp_ie_len, ev->cr.status, ev->cr.status == WLAN_STATUS_SUCCESS, NULL); break; case EVENT_ROAMED: __cfg80211_roamed(wdev, ev->rm.bss, ev->rm.req_ie, ev->rm.req_ie_len, ev->rm.resp_ie, ev->rm.resp_ie_len); break; case EVENT_DISCONNECTED: __cfg80211_disconnected(wdev->netdev, ev->dc.ie, ev->dc.ie_len, ev->dc.reason, !ev->dc.locally_generated); break; case EVENT_IBSS_JOINED: __cfg80211_ibss_joined(wdev->netdev, ev->ij.bssid, ev->ij.channel); break; case EVENT_STOPPED: __cfg80211_leave(wiphy_to_rdev(wdev->wiphy), wdev); break; } wdev_unlock(wdev); kfree(ev); spin_lock_irqsave(&wdev->event_lock, flags); } spin_unlock_irqrestore(&wdev->event_lock, flags); } void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev) { struct wireless_dev *wdev; ASSERT_RTNL(); list_for_each_entry(wdev, &rdev->wdev_list, list) cfg80211_process_wdev_events(wdev); } int cfg80211_change_iface(struct cfg80211_registered_device *rdev, struct net_device *dev, enum nl80211_iftype ntype, u32 *flags, struct vif_params *params) { int err; enum nl80211_iftype otype = dev->ieee80211_ptr->iftype; ASSERT_RTNL(); /* don't support changing VLANs, you just re-create them */ if (otype == NL80211_IFTYPE_AP_VLAN) return -EOPNOTSUPP; /* cannot change into P2P device type */ if (ntype == NL80211_IFTYPE_P2P_DEVICE) return -EOPNOTSUPP; if (!rdev->ops->change_virtual_intf || !(rdev->wiphy.interface_modes & (1 << ntype))) return -EOPNOTSUPP; /* if it's part of a bridge, reject changing type to station/ibss */ if ((dev->priv_flags & IFF_BRIDGE_PORT) && (ntype == NL80211_IFTYPE_ADHOC || ntype == NL80211_IFTYPE_STATION || ntype == NL80211_IFTYPE_P2P_CLIENT)) return -EBUSY; if (ntype != otype) { dev->ieee80211_ptr->use_4addr = false; dev->ieee80211_ptr->mesh_id_up_len = 0; wdev_lock(dev->ieee80211_ptr); rdev_set_qos_map(rdev, dev, NULL); wdev_unlock(dev->ieee80211_ptr); switch (otype) { case NL80211_IFTYPE_AP: cfg80211_stop_ap(rdev, dev, true); break; case NL80211_IFTYPE_ADHOC: cfg80211_leave_ibss(rdev, dev, false); break; case NL80211_IFTYPE_STATION: case NL80211_IFTYPE_P2P_CLIENT: wdev_lock(dev->ieee80211_ptr); cfg80211_disconnect(rdev, dev, WLAN_REASON_DEAUTH_LEAVING, true); wdev_unlock(dev->ieee80211_ptr); break; case NL80211_IFTYPE_MESH_POINT: /* mesh should be handled? */ break; default: break; } cfg80211_process_rdev_events(rdev); } err = rdev_change_virtual_intf(rdev, dev, ntype, flags, params); WARN_ON(!err && dev->ieee80211_ptr->iftype != ntype); if (!err && params && params->use_4addr != -1) dev->ieee80211_ptr->use_4addr = params->use_4addr; if (!err) { dev->priv_flags &= ~IFF_DONT_BRIDGE; switch (ntype) { case NL80211_IFTYPE_STATION: if (dev->ieee80211_ptr->use_4addr) break; /* fall through */ case NL80211_IFTYPE_OCB: case NL80211_IFTYPE_P2P_CLIENT: case NL80211_IFTYPE_ADHOC: dev->priv_flags |= IFF_DONT_BRIDGE; break; case NL80211_IFTYPE_P2P_GO: case NL80211_IFTYPE_AP: case NL80211_IFTYPE_AP_VLAN: case NL80211_IFTYPE_WDS: case NL80211_IFTYPE_MESH_POINT: /* bridging OK */ break; case NL80211_IFTYPE_MONITOR: /* monitor can't bridge anyway */ break; case NL80211_IFTYPE_UNSPECIFIED: case NUM_NL80211_IFTYPES: /* not happening */ break; case NL80211_IFTYPE_P2P_DEVICE: WARN_ON(1); break; } } if (!err && ntype != otype && netif_running(dev)) { cfg80211_update_iface_num(rdev, ntype, 1); cfg80211_update_iface_num(rdev, otype, -1); } return err; } static u32 cfg80211_calculate_bitrate_60g(struct rate_info *rate) { static const u32 __mcs2bitrate[] = { /* control PHY */ [0] = 275, /* SC PHY */ [1] = 3850, [2] = 7700, [3] = 9625, [4] = 11550, [5] = 12512, /* 1251.25 mbps */ [6] = 15400, [7] = 19250, [8] = 23100, [9] = 25025, [10] = 30800, [11] = 38500, [12] = 46200, /* OFDM PHY */ [13] = 6930, [14] = 8662, /* 866.25 mbps */ [15] = 13860, [16] = 17325, [17] = 20790, [18] = 27720, [19] = 34650, [20] = 41580, [21] = 45045, [22] = 51975, [23] = 62370, [24] = 67568, /* 6756.75 mbps */ /* LP-SC PHY */ [25] = 6260, [26] = 8340, [27] = 11120, [28] = 12510, [29] = 16680, [30] = 22240, [31] = 25030, }; if (WARN_ON_ONCE(rate->mcs >= ARRAY_SIZE(__mcs2bitrate))) return 0; return __mcs2bitrate[rate->mcs]; } static u32 cfg80211_calculate_bitrate_vht(struct rate_info *rate) { static const u32 base[4][10] = { { 6500000, 13000000, 19500000, 26000000, 39000000, 52000000, 58500000, 65000000, 78000000, 0, }, { 13500000, 27000000, 40500000, 54000000, 81000000, 108000000, 121500000, 135000000, 162000000, 180000000, }, { 29300000, 58500000, 87800000, 117000000, 175500000, 234000000, 263300000, 292500000, 351000000, 390000000, }, { 58500000, 117000000, 175500000, 234000000, 351000000, 468000000, 526500000, 585000000, 702000000, 780000000, }, }; u32 bitrate; int idx; if (WARN_ON_ONCE(rate->mcs > 9)) return 0; switch (rate->bw) { case RATE_INFO_BW_160: idx = 3; break; case RATE_INFO_BW_80: idx = 2; break; case RATE_INFO_BW_40: idx = 1; break; case RATE_INFO_BW_5: case RATE_INFO_BW_10: default: WARN_ON(1); /* fall through */ case RATE_INFO_BW_20: idx = 0; } bitrate = base[idx][rate->mcs]; bitrate *= rate->nss; if (rate->flags & RATE_INFO_FLAGS_SHORT_GI) bitrate = (bitrate / 9) * 10; /* do NOT round down here */ return (bitrate + 50000) / 100000; } u32 cfg80211_calculate_bitrate(struct rate_info *rate) { int modulation, streams, bitrate; if (!(rate->flags & RATE_INFO_FLAGS_MCS) && !(rate->flags & RATE_INFO_FLAGS_VHT_MCS)) return rate->legacy; if (rate->flags & RATE_INFO_FLAGS_60G) return cfg80211_calculate_bitrate_60g(rate); if (rate->flags & RATE_INFO_FLAGS_VHT_MCS) return cfg80211_calculate_bitrate_vht(rate); /* the formula below does only work for MCS values smaller than 32 */ if (WARN_ON_ONCE(rate->mcs >= 32)) return 0; modulation = rate->mcs & 7; streams = (rate->mcs >> 3) + 1; bitrate = (rate->bw == RATE_INFO_BW_40) ? 13500000 : 6500000; if (modulation < 4) bitrate *= (modulation + 1); else if (modulation == 4) bitrate *= (modulation + 2); else bitrate *= (modulation + 3); bitrate *= streams; if (rate->flags & RATE_INFO_FLAGS_SHORT_GI) bitrate = (bitrate / 9) * 10; /* do NOT round down here */ return (bitrate + 50000) / 100000; } EXPORT_SYMBOL(cfg80211_calculate_bitrate); int cfg80211_get_p2p_attr(const u8 *ies, unsigned int len, enum ieee80211_p2p_attr_id attr, u8 *buf, unsigned int bufsize) { u8 *out = buf; u16 attr_remaining = 0; bool desired_attr = false; u16 desired_len = 0; while (len > 0) { unsigned int iedatalen; unsigned int copy; const u8 *iedata; if (len < 2) return -EILSEQ; iedatalen = ies[1]; if (iedatalen + 2 > len) return -EILSEQ; if (ies[0] != WLAN_EID_VENDOR_SPECIFIC) goto cont; if (iedatalen < 4) goto cont; iedata = ies + 2; /* check WFA OUI, P2P subtype */ if (iedata[0] != 0x50 || iedata[1] != 0x6f || iedata[2] != 0x9a || iedata[3] != 0x09) goto cont; iedatalen -= 4; iedata += 4; /* check attribute continuation into this IE */ copy = min_t(unsigned int, attr_remaining, iedatalen); if (copy && desired_attr) { desired_len += copy; if (out) { memcpy(out, iedata, min(bufsize, copy)); out += min(bufsize, copy); bufsize -= min(bufsize, copy); } if (copy == attr_remaining) return desired_len; } attr_remaining -= copy; if (attr_remaining) goto cont; iedatalen -= copy; iedata += copy; while (iedatalen > 0) { u16 attr_len; /* P2P attribute ID & size must fit */ if (iedatalen < 3) return -EILSEQ; desired_attr = iedata[0] == attr; attr_len = get_unaligned_le16(iedata + 1); iedatalen -= 3; iedata += 3; copy = min_t(unsigned int, attr_len, iedatalen); if (desired_attr) { desired_len += copy; if (out) { memcpy(out, iedata, min(bufsize, copy)); out += min(bufsize, copy); bufsize -= min(bufsize, copy); } if (copy == attr_len) return desired_len; } iedata += copy; iedatalen -= copy; attr_remaining = attr_len - copy; } cont: len -= ies[1] + 2; ies += ies[1] + 2; } if (attr_remaining && desired_attr) return -EILSEQ; return -ENOENT; } EXPORT_SYMBOL(cfg80211_get_p2p_attr); static bool ieee80211_id_in_list(const u8 *ids, int n_ids, u8 id) { int i; for (i = 0; i < n_ids; i++) if (ids[i] == id) return true; return false; } size_t ieee80211_ie_split_ric(const u8 *ies, size_t ielen, const u8 *ids, int n_ids, const u8 *after_ric, int n_after_ric, size_t offset) { size_t pos = offset; while (pos < ielen && ieee80211_id_in_list(ids, n_ids, ies[pos])) { if (ies[pos] == WLAN_EID_RIC_DATA && n_after_ric) { pos += 2 + ies[pos + 1]; while (pos < ielen && !ieee80211_id_in_list(after_ric, n_after_ric, ies[pos])) pos += 2 + ies[pos + 1]; } else { pos += 2 + ies[pos + 1]; } } return pos; } EXPORT_SYMBOL(ieee80211_ie_split_ric); size_t ieee80211_ie_split(const u8 *ies, size_t ielen, const u8 *ids, int n_ids, size_t offset) { return ieee80211_ie_split_ric(ies, ielen, ids, n_ids, NULL, 0, offset); } EXPORT_SYMBOL(ieee80211_ie_split); bool ieee80211_operating_class_to_band(u8 operating_class, enum ieee80211_band *band) { switch (operating_class) { case 112: case 115 ... 127: case 128 ... 130: *band = IEEE80211_BAND_5GHZ; return true; case 81: case 82: case 83: case 84: *band = IEEE80211_BAND_2GHZ; return true; case 180: *band = IEEE80211_BAND_60GHZ; return true; } return false; } EXPORT_SYMBOL(ieee80211_operating_class_to_band); bool ieee80211_chandef_to_operating_class(struct cfg80211_chan_def *chandef, u8 *op_class) { u8 vht_opclass; u16 freq = chandef->center_freq1; if (freq >= 2412 && freq <= 2472) { if (chandef->width > NL80211_CHAN_WIDTH_40) return false; /* 2.407 GHz, channels 1..13 */ if (chandef->width == NL80211_CHAN_WIDTH_40) { if (freq > chandef->chan->center_freq) *op_class = 83; /* HT40+ */ else *op_class = 84; /* HT40- */ } else { *op_class = 81; } return true; } if (freq == 2484) { if (chandef->width > NL80211_CHAN_WIDTH_40) return false; *op_class = 82; /* channel 14 */ return true; } switch (chandef->width) { case NL80211_CHAN_WIDTH_80: vht_opclass = 128; break; case NL80211_CHAN_WIDTH_160: vht_opclass = 129; break; case NL80211_CHAN_WIDTH_80P80: vht_opclass = 130; break; case NL80211_CHAN_WIDTH_10: case NL80211_CHAN_WIDTH_5: return false; /* unsupported for now */ default: vht_opclass = 0; break; } /* 5 GHz, channels 36..48 */ if (freq >= 5180 && freq <= 5240) { if (vht_opclass) { *op_class = vht_opclass; } else if (chandef->width == NL80211_CHAN_WIDTH_40) { if (freq > chandef->chan->center_freq) *op_class = 116; else *op_class = 117; } else { *op_class = 115; } return true; } /* 5 GHz, channels 52..64 */ if (freq >= 5260 && freq <= 5320) { if (vht_opclass) { *op_class = vht_opclass; } else if (chandef->width == NL80211_CHAN_WIDTH_40) { if (freq > chandef->chan->center_freq) *op_class = 119; else *op_class = 120; } else { *op_class = 118; } return true; } /* 5 GHz, channels 100..144 */ if (freq >= 5500 && freq <= 5720) { if (vht_opclass) { *op_class = vht_opclass; } else if (chandef->width == NL80211_CHAN_WIDTH_40) { if (freq > chandef->chan->center_freq) *op_class = 122; else *op_class = 123; } else { *op_class = 121; } return true; } /* 5 GHz, channels 149..169 */ if (freq >= 5745 && freq <= 5845) { if (vht_opclass) { *op_class = vht_opclass; } else if (chandef->width == NL80211_CHAN_WIDTH_40) { if (freq > chandef->chan->center_freq) *op_class = 126; else *op_class = 127; } else if (freq <= 5805) { *op_class = 124; } else { *op_class = 125; } return true; } /* 56.16 GHz, channel 1..4 */ if (freq >= 56160 + 2160 * 1 && freq <= 56160 + 2160 * 4) { if (chandef->width >= NL80211_CHAN_WIDTH_40) return false; *op_class = 180; return true; } /* not supported yet */ return false; } EXPORT_SYMBOL(ieee80211_chandef_to_operating_class); int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev, u32 beacon_int) { struct wireless_dev *wdev; int res = 0; if (!beacon_int) return -EINVAL; list_for_each_entry(wdev, &rdev->wdev_list, list) { if (!wdev->beacon_interval) continue; if (wdev->beacon_interval != beacon_int) { res = -EINVAL; break; } } return res; } int cfg80211_iter_combinations(struct wiphy *wiphy, const int num_different_channels, const u8 radar_detect, const int iftype_num[NUM_NL80211_IFTYPES], void (*iter)(const struct ieee80211_iface_combination *c, void *data), void *data) { const struct ieee80211_regdomain *regdom; enum nl80211_dfs_regions region = 0; int i, j, iftype; int num_interfaces = 0; u32 used_iftypes = 0; if (radar_detect) { rcu_read_lock(); regdom = rcu_dereference(cfg80211_regdomain); if (regdom) region = regdom->dfs_region; rcu_read_unlock(); } for (iftype = 0; iftype < NUM_NL80211_IFTYPES; iftype++) { num_interfaces += iftype_num[iftype]; if (iftype_num[iftype] > 0 && !(wiphy->software_iftypes & BIT(iftype))) used_iftypes |= BIT(iftype); } for (i = 0; i < wiphy->n_iface_combinations; i++) { const struct ieee80211_iface_combination *c; struct ieee80211_iface_limit *limits; u32 all_iftypes = 0; c = &wiphy->iface_combinations[i]; if (num_interfaces > c->max_interfaces) continue; if (num_different_channels > c->num_different_channels) continue; limits = kmemdup(c->limits, sizeof(limits[0]) * c->n_limits, GFP_KERNEL); if (!limits) return -ENOMEM; for (iftype = 0; iftype < NUM_NL80211_IFTYPES; iftype++) { if (wiphy->software_iftypes & BIT(iftype)) continue; for (j = 0; j < c->n_limits; j++) { all_iftypes |= limits[j].types; if (!(limits[j].types & BIT(iftype))) continue; if (limits[j].max < iftype_num[iftype]) goto cont; limits[j].max -= iftype_num[iftype]; } } if (radar_detect != (c->radar_detect_widths & radar_detect)) goto cont; if (radar_detect && c->radar_detect_regions && !(c->radar_detect_regions & BIT(region))) goto cont; /* Finally check that all iftypes that we're currently * using are actually part of this combination. If they * aren't then we can't use this combination and have * to continue to the next. */ if ((all_iftypes & used_iftypes) != used_iftypes) goto cont; /* This combination covered all interface types and * supported the requested numbers, so we're good. */ (*iter)(c, data); cont: kfree(limits); } return 0; } EXPORT_SYMBOL(cfg80211_iter_combinations); static void cfg80211_iter_sum_ifcombs(const struct ieee80211_iface_combination *c, void *data) { int *num = data; (*num)++; } int cfg80211_check_combinations(struct wiphy *wiphy, const int num_different_channels, const u8 radar_detect, const int iftype_num[NUM_NL80211_IFTYPES]) { int err, num = 0; err = cfg80211_iter_combinations(wiphy, num_different_channels, radar_detect, iftype_num, cfg80211_iter_sum_ifcombs, &num); if (err) return err; if (num == 0) return -EBUSY; return 0; } EXPORT_SYMBOL(cfg80211_check_combinations); int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev, struct wireless_dev *wdev, enum nl80211_iftype iftype, struct ieee80211_channel *chan, enum cfg80211_chan_mode chanmode, u8 radar_detect) { struct wireless_dev *wdev_iter; int num[NUM_NL80211_IFTYPES]; struct ieee80211_channel *used_channels[CFG80211_MAX_NUM_DIFFERENT_CHANNELS]; struct ieee80211_channel *ch; enum cfg80211_chan_mode chmode; int num_different_channels = 0; int total = 1; int i; ASSERT_RTNL(); if (WARN_ON(hweight32(radar_detect) > 1)) return -EINVAL; if (WARN_ON(iftype >= NUM_NL80211_IFTYPES)) return -EINVAL; /* Always allow software iftypes */ if (rdev->wiphy.software_iftypes & BIT(iftype)) { if (radar_detect) return -EINVAL; return 0; } memset(num, 0, sizeof(num)); memset(used_channels, 0, sizeof(used_channels)); num[iftype] = 1; /* TODO: We'll probably not need this anymore, since this * should only be called with CHAN_MODE_UNDEFINED. There are * still a couple of pending calls where other chanmodes are * used, but we should get rid of them. */ switch (chanmode) { case CHAN_MODE_UNDEFINED: break; case CHAN_MODE_SHARED: WARN_ON(!chan); used_channels[0] = chan; num_different_channels++; break; case CHAN_MODE_EXCLUSIVE: num_different_channels++; break; } list_for_each_entry(wdev_iter, &rdev->wdev_list, list) { if (wdev_iter == wdev) continue; if (wdev_iter->iftype == NL80211_IFTYPE_P2P_DEVICE) { if (!wdev_iter->p2p_started) continue; } else if (wdev_iter->netdev) { if (!netif_running(wdev_iter->netdev)) continue; } else { WARN_ON(1); } if (rdev->wiphy.software_iftypes & BIT(wdev_iter->iftype)) continue; /* * We may be holding the "wdev" mutex, but now need to lock * wdev_iter. This is OK because once we get here wdev_iter * is not wdev (tested above), but we need to use the nested * locking for lockdep. */ mutex_lock_nested(&wdev_iter->mtx, 1); __acquire(wdev_iter->mtx); cfg80211_get_chan_state(wdev_iter, &ch, &chmode, &radar_detect); wdev_unlock(wdev_iter); switch (chmode) { case CHAN_MODE_UNDEFINED: break; case CHAN_MODE_SHARED: for (i = 0; i < CFG80211_MAX_NUM_DIFFERENT_CHANNELS; i++) if (!used_channels[i] || used_channels[i] == ch) break; if (i == CFG80211_MAX_NUM_DIFFERENT_CHANNELS) return -EBUSY; if (used_channels[i] == NULL) { used_channels[i] = ch; num_different_channels++; } break; case CHAN_MODE_EXCLUSIVE: num_different_channels++; break; } num[wdev_iter->iftype]++; total++; } if (total == 1 && !radar_detect) return 0; return cfg80211_check_combinations(&rdev->wiphy, num_different_channels, radar_detect, num); } int ieee80211_get_ratemask(struct ieee80211_supported_band *sband, const u8 *rates, unsigned int n_rates, u32 *mask) { int i, j; if (!sband) return -EINVAL; if (n_rates == 0 || n_rates > NL80211_MAX_SUPP_RATES) return -EINVAL; *mask = 0; for (i = 0; i < n_rates; i++) { int rate = (rates[i] & 0x7f) * 5; bool found = false; for (j = 0; j < sband->n_bitrates; j++) { if (sband->bitrates[j].bitrate == rate) { found = true; *mask |= BIT(j); break; } } if (!found) return -EINVAL; } /* * mask must have at least one bit set here since we * didn't accept a 0-length rates array nor allowed * entries in the array that didn't exist */ return 0; } unsigned int ieee80211_get_num_supported_channels(struct wiphy *wiphy) { enum ieee80211_band band; unsigned int n_channels = 0; for (band = 0; band < IEEE80211_NUM_BANDS; band++) if (wiphy->bands[band]) n_channels += wiphy->bands[band]->n_channels; return n_channels; } EXPORT_SYMBOL(ieee80211_get_num_supported_channels); int cfg80211_get_station(struct net_device *dev, const u8 *mac_addr, struct station_info *sinfo) { struct cfg80211_registered_device *rdev; struct wireless_dev *wdev; wdev = dev->ieee80211_ptr; if (!wdev) return -EOPNOTSUPP; rdev = wiphy_to_rdev(wdev->wiphy); if (!rdev->ops->get_station) return -EOPNOTSUPP; return rdev_get_station(rdev, dev, mac_addr, sinfo); } EXPORT_SYMBOL(cfg80211_get_station); /* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */ /* Ethernet-II snap header (RFC1042 for most EtherTypes) */ const unsigned char rfc1042_header[] __aligned(2) = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; EXPORT_SYMBOL(rfc1042_header); /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */ const unsigned char bridge_tunnel_header[] __aligned(2) = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 }; EXPORT_SYMBOL(bridge_tunnel_header);