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net/wireless/util.c
52.8 KB
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// SPDX-License-Identifier: GPL-2.0 |
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/* * Wireless utility functions * |
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* Copyright 2007-2009 Johannes Berg <johannes@sipsolutions.net> |
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* Copyright 2013-2014 Intel Mobile Communications GmbH |
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* Copyright 2017 Intel Deutschland GmbH |
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* Copyright (C) 2018-2020 Intel Corporation |
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*/ |
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#include <linux/export.h> |
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#include <linux/bitops.h> |
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#include <linux/etherdevice.h> |
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#include <linux/slab.h> |
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#include <linux/ieee80211.h> |
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#include <net/cfg80211.h> |
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#include <net/ip.h> |
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#include <net/dsfield.h> |
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#include <linux/if_vlan.h> |
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#include <linux/mpls.h> |
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#include <linux/gcd.h> |
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#include <linux/bitfield.h> |
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#include <linux/nospec.h> |
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#include "core.h" |
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#include "rdev-ops.h" |
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struct ieee80211_rate * ieee80211_get_response_rate(struct ieee80211_supported_band *sband, |
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u32 basic_rates, int bitrate) |
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{ 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); |
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u32 ieee80211_mandatory_rates(struct ieee80211_supported_band *sband, enum nl80211_bss_scan_width scan_width) |
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{ struct ieee80211_rate *bitrates; u32 mandatory_rates = 0; enum ieee80211_rate_flags mandatory_flag; int i; if (WARN_ON(!sband)) return 1; |
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if (sband->band == NL80211_BAND_2GHZ) { |
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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 { |
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mandatory_flag = IEEE80211_RATE_MANDATORY_A; |
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} |
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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); |
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u32 ieee80211_channel_to_freq_khz(int chan, enum nl80211_band band) |
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{ |
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/* see 802.11 17.3.8.3.2 and Annex J * there are overlapping channel numbers in 5GHz and 2GHz bands */ |
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if (chan <= 0) return 0; /* not supported */ switch (band) { |
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case NL80211_BAND_2GHZ: |
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if (chan == 14) |
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return MHZ_TO_KHZ(2484); |
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else if (chan < 14) |
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return MHZ_TO_KHZ(2407 + chan * 5); |
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break; |
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case NL80211_BAND_5GHZ: |
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if (chan >= 182 && chan <= 196) |
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return MHZ_TO_KHZ(4000 + chan * 5); |
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else |
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return MHZ_TO_KHZ(5000 + chan * 5); |
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break; |
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case NL80211_BAND_6GHZ: |
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/* see 802.11ax D6.1 27.3.23.2 */ if (chan == 2) return MHZ_TO_KHZ(5935); |
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if (chan <= 233) |
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return MHZ_TO_KHZ(5950 + chan * 5); |
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break; |
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case NL80211_BAND_60GHZ: |
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if (chan < 7) |
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return MHZ_TO_KHZ(56160 + chan * 2160); |
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break; |
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case NL80211_BAND_S1GHZ: return 902000 + chan * 500; |
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default: ; |
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} |
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return 0; /* not supported */ |
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} |
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EXPORT_SYMBOL(ieee80211_channel_to_freq_khz); |
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enum nl80211_chan_width ieee80211_s1g_channel_width(const struct ieee80211_channel *chan) { if (WARN_ON(!chan || chan->band != NL80211_BAND_S1GHZ)) return NL80211_CHAN_WIDTH_20_NOHT; /*S1G defines a single allowed channel width per channel. * Extract that width here. */ if (chan->flags & IEEE80211_CHAN_1MHZ) return NL80211_CHAN_WIDTH_1; else if (chan->flags & IEEE80211_CHAN_2MHZ) return NL80211_CHAN_WIDTH_2; else if (chan->flags & IEEE80211_CHAN_4MHZ) return NL80211_CHAN_WIDTH_4; else if (chan->flags & IEEE80211_CHAN_8MHZ) return NL80211_CHAN_WIDTH_8; else if (chan->flags & IEEE80211_CHAN_16MHZ) return NL80211_CHAN_WIDTH_16; pr_err("unknown channel width for channel at %dKHz? ", ieee80211_channel_to_khz(chan)); return NL80211_CHAN_WIDTH_1; } EXPORT_SYMBOL(ieee80211_s1g_channel_width); |
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int ieee80211_freq_khz_to_channel(u32 freq) |
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{ |
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/* TODO: just handle MHz for now */ freq = KHZ_TO_MHZ(freq); |
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/* see 802.11 17.3.8.3.2 and Annex J */ |
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if (freq == 2484) return 14; |
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else if (freq < 2484) |
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return (freq - 2407) / 5; |
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else if (freq >= 4910 && freq <= 4980) return (freq - 4000) / 5; |
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else if (freq < 5925) |
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return (freq - 5000) / 5; |
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else if (freq == 5935) return 2; |
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else if (freq <= 45000) /* DMG band lower limit */ |
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/* see 802.11ax D6.1 27.3.22.2 */ return (freq - 5950) / 5; |
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else if (freq >= 58320 && freq <= 70200) |
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return (freq - 56160) / 2160; else return 0; |
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} |
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EXPORT_SYMBOL(ieee80211_freq_khz_to_channel); |
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struct ieee80211_channel *ieee80211_get_channel_khz(struct wiphy *wiphy, u32 freq) |
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{ |
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enum nl80211_band band; |
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struct ieee80211_supported_band *sband; int i; |
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for (band = 0; band < NUM_NL80211_BANDS; band++) { |
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sband = wiphy->bands[band]; if (!sband) continue; for (i = 0; i < sband->n_channels; i++) { |
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struct ieee80211_channel *chan = &sband->channels[i]; if (ieee80211_channel_to_khz(chan) == freq) return chan; |
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} } return NULL; } |
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EXPORT_SYMBOL(ieee80211_get_channel_khz); |
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static void set_mandatory_flags_band(struct ieee80211_supported_band *sband) |
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{ int i, want; |
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switch (sband->band) { |
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case NL80211_BAND_5GHZ: |
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case NL80211_BAND_6GHZ: |
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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; |
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case NL80211_BAND_2GHZ: |
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want = 7; for (i = 0; i < sband->n_bitrates; i++) { |
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switch (sband->bitrates[i].bitrate) { case 10: case 20: case 55: case 110: |
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sband->bitrates[i].flags |= IEEE80211_RATE_MANDATORY_B | IEEE80211_RATE_MANDATORY_G; want--; |
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break; case 60: case 120: case 240: |
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sband->bitrates[i].flags |= IEEE80211_RATE_MANDATORY_G; want--; |
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fallthrough; |
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default: |
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sband->bitrates[i].flags |= IEEE80211_RATE_ERP_G; |
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break; } |
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} |
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WARN_ON(want != 0 && want != 3); |
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break; |
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case NL80211_BAND_60GHZ: |
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/* check for mandatory HT MCS 1..4 */ WARN_ON(!sband->ht_cap.ht_supported); WARN_ON((sband->ht_cap.mcs.rx_mask[0] & 0x1e) != 0x1e); break; |
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case NL80211_BAND_S1GHZ: /* Figure 9-589bd: 3 means unsupported, so != 3 means at least * mandatory is ok. */ WARN_ON((sband->s1g_cap.nss_mcs[0] & 0x3) == 0x3); break; |
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case NUM_NL80211_BANDS: |
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default: |
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WARN_ON(1); break; } } void ieee80211_set_bitrate_flags(struct wiphy *wiphy) { |
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enum nl80211_band band; |
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for (band = 0; band < NUM_NL80211_BANDS; band++) |
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if (wiphy->bands[band]) |
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set_mandatory_flags_band(wiphy->bands[band]); |
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} |
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bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher) { int i; for (i = 0; i < wiphy->n_cipher_suites; i++) if (cipher == wiphy->cipher_suites[i]) return true; return false; } |
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static bool cfg80211_igtk_cipher_supported(struct cfg80211_registered_device *rdev) { struct wiphy *wiphy = &rdev->wiphy; int i; for (i = 0; i < wiphy->n_cipher_suites; i++) { switch (wiphy->cipher_suites[i]) { case WLAN_CIPHER_SUITE_AES_CMAC: case WLAN_CIPHER_SUITE_BIP_CMAC_256: case WLAN_CIPHER_SUITE_BIP_GMAC_128: case WLAN_CIPHER_SUITE_BIP_GMAC_256: return true; } } return false; } bool cfg80211_valid_key_idx(struct cfg80211_registered_device *rdev, int key_idx, bool pairwise) |
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{ |
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int max_key_idx; |
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if (pairwise) max_key_idx = 3; else if (wiphy_ext_feature_isset(&rdev->wiphy, NL80211_EXT_FEATURE_BEACON_PROTECTION) || wiphy_ext_feature_isset(&rdev->wiphy, NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT)) |
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max_key_idx = 7; |
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else if (cfg80211_igtk_cipher_supported(rdev)) max_key_idx = 5; else max_key_idx = 3; |
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if (key_idx < 0 || key_idx > max_key_idx) |
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return false; return true; } int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev, struct key_params *params, int key_idx, bool pairwise, const u8 *mac_addr) { if (!cfg80211_valid_key_idx(rdev, key_idx, pairwise)) |
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return -EINVAL; |
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if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) return -EINVAL; if (pairwise && !mac_addr) return -EINVAL; |
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switch (params->cipher) { case WLAN_CIPHER_SUITE_TKIP: |
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/* Extended Key ID can only be used with CCMP/GCMP ciphers */ if ((pairwise && key_idx) || params->mode != NL80211_KEY_RX_TX) return -EINVAL; break; |
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case WLAN_CIPHER_SUITE_CCMP: |
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case WLAN_CIPHER_SUITE_CCMP_256: case WLAN_CIPHER_SUITE_GCMP: case WLAN_CIPHER_SUITE_GCMP_256: |
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/* IEEE802.11-2016 allows only 0 and - when supporting * Extended Key ID - 1 as index for pairwise keys. |
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* @NL80211_KEY_NO_TX is only allowed for pairwise keys when * the driver supports Extended Key ID. * @NL80211_KEY_SET_TX can't be set when installing and * validating a key. |
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*/ |
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if ((params->mode == NL80211_KEY_NO_TX && !pairwise) || params->mode == NL80211_KEY_SET_TX) return -EINVAL; if (wiphy_ext_feature_isset(&rdev->wiphy, NL80211_EXT_FEATURE_EXT_KEY_ID)) { if (pairwise && (key_idx < 0 || key_idx > 1)) |
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return -EINVAL; |
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} else if (pairwise && key_idx) { |
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return -EINVAL; |
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} |
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break; case WLAN_CIPHER_SUITE_AES_CMAC: |
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case WLAN_CIPHER_SUITE_BIP_CMAC_256: case WLAN_CIPHER_SUITE_BIP_GMAC_128: case WLAN_CIPHER_SUITE_BIP_GMAC_256: |
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/* Disallow BIP (group-only) cipher as pairwise cipher */ if (pairwise) return -EINVAL; |
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if (key_idx < 4) return -EINVAL; |
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break; |
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case WLAN_CIPHER_SUITE_WEP40: case WLAN_CIPHER_SUITE_WEP104: if (key_idx > 3) return -EINVAL; |
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default: break; } |
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switch (params->cipher) { case WLAN_CIPHER_SUITE_WEP40: |
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if (params->key_len != WLAN_KEY_LEN_WEP40) |
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return -EINVAL; break; case WLAN_CIPHER_SUITE_TKIP: |
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if (params->key_len != WLAN_KEY_LEN_TKIP) |
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return -EINVAL; break; case WLAN_CIPHER_SUITE_CCMP: |
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if (params->key_len != WLAN_KEY_LEN_CCMP) |
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return -EINVAL; break; |
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case WLAN_CIPHER_SUITE_CCMP_256: if (params->key_len != WLAN_KEY_LEN_CCMP_256) return -EINVAL; break; case WLAN_CIPHER_SUITE_GCMP: if (params->key_len != WLAN_KEY_LEN_GCMP) return -EINVAL; break; case WLAN_CIPHER_SUITE_GCMP_256: if (params->key_len != WLAN_KEY_LEN_GCMP_256) return -EINVAL; break; |
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case WLAN_CIPHER_SUITE_WEP104: |
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if (params->key_len != WLAN_KEY_LEN_WEP104) |
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return -EINVAL; break; case WLAN_CIPHER_SUITE_AES_CMAC: |
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if (params->key_len != WLAN_KEY_LEN_AES_CMAC) |
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return -EINVAL; break; |
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case WLAN_CIPHER_SUITE_BIP_CMAC_256: if (params->key_len != WLAN_KEY_LEN_BIP_CMAC_256) return -EINVAL; break; case WLAN_CIPHER_SUITE_BIP_GMAC_128: if (params->key_len != WLAN_KEY_LEN_BIP_GMAC_128) return -EINVAL; break; case WLAN_CIPHER_SUITE_BIP_GMAC_256: if (params->key_len != WLAN_KEY_LEN_BIP_GMAC_256) return -EINVAL; break; |
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default: |
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/* * We don't know anything about this algorithm, * allow using it -- but the driver must check * all parameters! We still check below whether * or not the driver supports this algorithm, * of course. */ break; |
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} |
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if (params->seq) { switch (params->cipher) { case WLAN_CIPHER_SUITE_WEP40: case WLAN_CIPHER_SUITE_WEP104: /* These ciphers do not use key sequence */ return -EINVAL; case WLAN_CIPHER_SUITE_TKIP: case WLAN_CIPHER_SUITE_CCMP: |
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case WLAN_CIPHER_SUITE_CCMP_256: case WLAN_CIPHER_SUITE_GCMP: case WLAN_CIPHER_SUITE_GCMP_256: |
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case WLAN_CIPHER_SUITE_AES_CMAC: |
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case WLAN_CIPHER_SUITE_BIP_CMAC_256: case WLAN_CIPHER_SUITE_BIP_GMAC_128: case WLAN_CIPHER_SUITE_BIP_GMAC_256: |
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if (params->seq_len != 6) return -EINVAL; break; } } |
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if (!cfg80211_supported_cipher_suite(&rdev->wiphy, params->cipher)) |
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return -EINVAL; |
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return 0; } |
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unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc) |
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{ unsigned int hdrlen = 24; |
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if (ieee80211_is_ext(fc)) { hdrlen = 4; goto out; } |
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if (ieee80211_is_data(fc)) { if (ieee80211_has_a4(fc)) hdrlen = 30; |
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if (ieee80211_is_data_qos(fc)) { |
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hdrlen += IEEE80211_QOS_CTL_LEN; |
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if (ieee80211_has_order(fc)) hdrlen += IEEE80211_HT_CTL_LEN; } |
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goto out; } |
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if (ieee80211_is_mgmt(fc)) { if (ieee80211_has_order(fc)) hdrlen += IEEE80211_HT_CTL_LEN; goto out; } |
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|
468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 |
if (ieee80211_is_ctl(fc)) { /* * ACK and CTS are 10 bytes, all others 16. To see how * to get this condition consider * subtype mask: 0b0000000011110000 (0x00F0) * ACK subtype: 0b0000000011010000 (0x00D0) * CTS subtype: 0b0000000011000000 (0x00C0) * bits that matter: ^^^ (0x00E0) * value of those: 0b0000000011000000 (0x00C0) */ if ((fc & cpu_to_le16(0x00E0)) == cpu_to_le16(0x00C0)) hdrlen = 10; else hdrlen = 16; } out: return hdrlen; } EXPORT_SYMBOL(ieee80211_hdrlen); unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb) { const struct ieee80211_hdr *hdr = (const struct ieee80211_hdr *)skb->data; unsigned int hdrlen; if (unlikely(skb->len < 10)) return 0; hdrlen = ieee80211_hdrlen(hdr->frame_control); if (unlikely(hdrlen > skb->len)) return 0; return hdrlen; } EXPORT_SYMBOL(ieee80211_get_hdrlen_from_skb); |
2d1c304cb
|
502 |
static unsigned int __ieee80211_get_mesh_hdrlen(u8 flags) |
e31a16d6f
|
503 |
{ |
2d1c304cb
|
504 |
int ae = flags & MESH_FLAGS_AE; |
7dd111e8e
|
505 |
/* 802.11-2012, 8.2.4.7.3 */ |
e31a16d6f
|
506 |
switch (ae) { |
7dd111e8e
|
507 |
default: |
e31a16d6f
|
508 509 |
case 0: return 6; |
3c5772a52
|
510 |
case MESH_FLAGS_AE_A4: |
e31a16d6f
|
511 |
return 12; |
3c5772a52
|
512 |
case MESH_FLAGS_AE_A5_A6: |
e31a16d6f
|
513 |
return 18; |
e31a16d6f
|
514 515 |
} } |
2d1c304cb
|
516 517 518 519 520 |
unsigned int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr) { return __ieee80211_get_mesh_hdrlen(meshhdr->flags); } |
9b395bc3b
|
521 |
EXPORT_SYMBOL(ieee80211_get_mesh_hdrlen); |
e31a16d6f
|
522 |
|
7f6990c83
|
523 |
int ieee80211_data_to_8023_exthdr(struct sk_buff *skb, struct ethhdr *ehdr, |
24bba078e
|
524 525 |
const u8 *addr, enum nl80211_iftype iftype, u8 data_offset) |
e31a16d6f
|
526 527 |
{ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
2d1c304cb
|
528 529 530 531 532 533 534 |
struct { u8 hdr[ETH_ALEN] __aligned(2); __be16 proto; } payload; struct ethhdr tmp; u16 hdrlen; u8 mesh_flags = 0; |
e31a16d6f
|
535 536 537 |
if (unlikely(!ieee80211_is_data_present(hdr->frame_control))) return -1; |
24bba078e
|
538 |
hdrlen = ieee80211_hdrlen(hdr->frame_control) + data_offset; |
2d1c304cb
|
539 540 |
if (skb->len < hdrlen + 8) return -1; |
e31a16d6f
|
541 542 543 544 545 546 547 548 549 550 |
/* convert IEEE 802.11 header + possible LLC headers into Ethernet * header * IEEE 802.11 address fields: * ToDS FromDS Addr1 Addr2 Addr3 Addr4 * 0 0 DA SA BSSID n/a * 0 1 DA BSSID SA n/a * 1 0 BSSID SA DA n/a * 1 1 RA TA DA SA */ |
2d1c304cb
|
551 552 553 554 555 |
memcpy(tmp.h_dest, ieee80211_get_DA(hdr), ETH_ALEN); memcpy(tmp.h_source, ieee80211_get_SA(hdr), ETH_ALEN); if (iftype == NL80211_IFTYPE_MESH_POINT) skb_copy_bits(skb, hdrlen, &mesh_flags, 1); |
e31a16d6f
|
556 |
|
5667c86ac
|
557 |
mesh_flags &= MESH_FLAGS_AE; |
e31a16d6f
|
558 559 560 561 |
switch (hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) { case cpu_to_le16(IEEE80211_FCTL_TODS): if (unlikely(iftype != NL80211_IFTYPE_AP && |
074ac8df9
|
562 563 |
iftype != NL80211_IFTYPE_AP_VLAN && iftype != NL80211_IFTYPE_P2P_GO)) |
e31a16d6f
|
564 565 566 567 |
return -1; break; case cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS): if (unlikely(iftype != NL80211_IFTYPE_WDS && |
f14543ee4
|
568 569 570 |
iftype != NL80211_IFTYPE_MESH_POINT && iftype != NL80211_IFTYPE_AP_VLAN && iftype != NL80211_IFTYPE_STATION)) |
e31a16d6f
|
571 572 |
return -1; if (iftype == NL80211_IFTYPE_MESH_POINT) { |
5667c86ac
|
573 |
if (mesh_flags == MESH_FLAGS_AE_A4) |
e3cf8b3f7
|
574 |
return -1; |
5667c86ac
|
575 |
if (mesh_flags == MESH_FLAGS_AE_A5_A6) { |
e3cf8b3f7
|
576 577 |
skb_copy_bits(skb, hdrlen + offsetof(struct ieee80211s_hdr, eaddr1), |
2d1c304cb
|
578 |
tmp.h_dest, 2 * ETH_ALEN); |
e31a16d6f
|
579 |
} |
2d1c304cb
|
580 |
hdrlen += __ieee80211_get_mesh_hdrlen(mesh_flags); |
e31a16d6f
|
581 582 583 |
} break; case cpu_to_le16(IEEE80211_FCTL_FROMDS): |
3c5772a52
|
584 |
if ((iftype != NL80211_IFTYPE_STATION && |
074ac8df9
|
585 586 |
iftype != NL80211_IFTYPE_P2P_CLIENT && iftype != NL80211_IFTYPE_MESH_POINT) || |
2d1c304cb
|
587 588 |
(is_multicast_ether_addr(tmp.h_dest) && ether_addr_equal(tmp.h_source, addr))) |
e31a16d6f
|
589 |
return -1; |
3c5772a52
|
590 |
if (iftype == NL80211_IFTYPE_MESH_POINT) { |
5667c86ac
|
591 |
if (mesh_flags == MESH_FLAGS_AE_A5_A6) |
7dd111e8e
|
592 |
return -1; |
5667c86ac
|
593 |
if (mesh_flags == MESH_FLAGS_AE_A4) |
e3cf8b3f7
|
594 595 |
skb_copy_bits(skb, hdrlen + offsetof(struct ieee80211s_hdr, eaddr1), |
2d1c304cb
|
596 597 |
tmp.h_source, ETH_ALEN); hdrlen += __ieee80211_get_mesh_hdrlen(mesh_flags); |
3c5772a52
|
598 |
} |
e31a16d6f
|
599 600 |
break; case cpu_to_le16(0): |
941c93cd0
|
601 |
if (iftype != NL80211_IFTYPE_ADHOC && |
6e0bd6c35
|
602 603 |
iftype != NL80211_IFTYPE_STATION && iftype != NL80211_IFTYPE_OCB) |
941c93cd0
|
604 |
return -1; |
e31a16d6f
|
605 606 |
break; } |
2d1c304cb
|
607 608 |
skb_copy_bits(skb, hdrlen, &payload, sizeof(payload)); tmp.h_proto = payload.proto; |
e31a16d6f
|
609 |
|
2d1c304cb
|
610 611 612 613 |
if (likely((ether_addr_equal(payload.hdr, rfc1042_header) && tmp.h_proto != htons(ETH_P_AARP) && tmp.h_proto != htons(ETH_P_IPX)) || ether_addr_equal(payload.hdr, bridge_tunnel_header))) |
e31a16d6f
|
614 615 |
/* remove RFC1042 or Bridge-Tunnel encapsulation and * replace EtherType */ |
2d1c304cb
|
616 617 |
hdrlen += ETH_ALEN + 2; else |
c041778c9
|
618 |
tmp.h_proto = htons(skb->len - hdrlen); |
2d1c304cb
|
619 620 |
pskb_pull(skb, hdrlen); |
e31a16d6f
|
621 |
|
2d1c304cb
|
622 |
if (!ehdr) |
d58ff3512
|
623 |
ehdr = skb_push(skb, sizeof(struct ethhdr)); |
2d1c304cb
|
624 |
memcpy(ehdr, &tmp, sizeof(tmp)); |
e31a16d6f
|
625 626 |
return 0; } |
7f6990c83
|
627 |
EXPORT_SYMBOL(ieee80211_data_to_8023_exthdr); |
e31a16d6f
|
628 |
|
2b67f944f
|
629 630 631 632 633 634 |
static void __frame_add_frag(struct sk_buff *skb, struct page *page, void *ptr, int len, int size) { struct skb_shared_info *sh = skb_shinfo(skb); int page_offset; |
81c044fc3
|
635 |
get_page(page); |
2b67f944f
|
636 637 638 639 640 641 642 643 644 |
page_offset = ptr - page_address(page); skb_add_rx_frag(skb, sh->nr_frags, page, page_offset, len, size); } static void __ieee80211_amsdu_copy_frag(struct sk_buff *skb, struct sk_buff *frame, int offset, int len) { struct skb_shared_info *sh = skb_shinfo(skb); |
aa1702dd1
|
645 |
const skb_frag_t *frag = &sh->frags[0]; |
2b67f944f
|
646 647 648 649 650 651 652 653 654 655 656 657 |
struct page *frag_page; void *frag_ptr; int frag_len, frag_size; int head_size = skb->len - skb->data_len; int cur_len; frag_page = virt_to_head_page(skb->head); frag_ptr = skb->data; frag_size = head_size; while (offset >= frag_size) { offset -= frag_size; |
2b67f944f
|
658 659 660 |
frag_page = skb_frag_page(frag); frag_ptr = skb_frag_address(frag); frag_size = skb_frag_size(frag); |
aa1702dd1
|
661 |
frag++; |
2b67f944f
|
662 663 664 665 666 667 668 669 670 671 672 |
} frag_ptr += offset; frag_len = frag_size - offset; cur_len = min(len, frag_len); __frame_add_frag(frame, frag_page, frag_ptr, cur_len, frag_size); len -= cur_len; while (len > 0) { |
2b67f944f
|
673 674 675 676 677 |
frag_len = skb_frag_size(frag); cur_len = min(len, frag_len); __frame_add_frag(frame, skb_frag_page(frag), skb_frag_address(frag), cur_len, frag_len); len -= cur_len; |
aa1702dd1
|
678 |
frag++; |
2b67f944f
|
679 680 |
} } |
230fd28a9
|
681 682 |
static struct sk_buff * __ieee80211_amsdu_copy(struct sk_buff *skb, unsigned int hlen, |
2b67f944f
|
683 |
int offset, int len, bool reuse_frag) |
230fd28a9
|
684 685 |
{ struct sk_buff *frame; |
2b67f944f
|
686 |
int cur_len = len; |
230fd28a9
|
687 688 689 690 691 |
if (skb->len - offset < len) return NULL; /* |
2b67f944f
|
692 693 694 695 696 697 698 699 |
* When reusing framents, copy some data to the head to simplify * ethernet header handling and speed up protocol header processing * in the stack later. */ if (reuse_frag) cur_len = min_t(int, len, 32); /* |
230fd28a9
|
700 701 702 |
* Allocate and reserve two bytes more for payload * alignment since sizeof(struct ethhdr) is 14. */ |
2b67f944f
|
703 |
frame = dev_alloc_skb(hlen + sizeof(struct ethhdr) + 2 + cur_len); |
16a910a67
|
704 705 |
if (!frame) return NULL; |
230fd28a9
|
706 707 |
skb_reserve(frame, hlen + sizeof(struct ethhdr) + 2); |
2b67f944f
|
708 709 710 711 712 713 714 715 |
skb_copy_bits(skb, offset, skb_put(frame, cur_len), cur_len); len -= cur_len; if (!len) return frame; offset += cur_len; __ieee80211_amsdu_copy_frag(skb, frame, offset, len); |
230fd28a9
|
716 717 718 |
return frame; } |
eaf85ca7f
|
719 720 721 |
void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list, const u8 *addr, enum nl80211_iftype iftype, |
8b3becadc
|
722 |
const unsigned int extra_headroom, |
8b935ee2e
|
723 |
const u8 *check_da, const u8 *check_sa) |
eaf85ca7f
|
724 |
{ |
230fd28a9
|
725 |
unsigned int hlen = ALIGN(extra_headroom, 4); |
eaf85ca7f
|
726 727 728 |
struct sk_buff *frame = NULL; u16 ethertype; u8 *payload; |
7f6990c83
|
729 |
int offset = 0, remaining; |
230fd28a9
|
730 |
struct ethhdr eth; |
2b67f944f
|
731 |
bool reuse_frag = skb->head_frag && !skb_has_frag_list(skb); |
2bf0ccc70
|
732 |
bool reuse_skb = false; |
230fd28a9
|
733 |
bool last = false; |
88665f5a7
|
734 |
|
230fd28a9
|
735 736 737 |
while (!last) { unsigned int subframe_len; int len; |
eaf85ca7f
|
738 |
u8 padding; |
eaf85ca7f
|
739 |
|
230fd28a9
|
740 741 742 |
skb_copy_bits(skb, offset, ð, sizeof(eth)); len = ntohs(eth.h_proto); subframe_len = sizeof(struct ethhdr) + len; |
eaf85ca7f
|
743 |
padding = (4 - subframe_len) & 0x3; |
230fd28a9
|
744 |
|
eaf85ca7f
|
745 |
/* the last MSDU has no padding */ |
230fd28a9
|
746 |
remaining = skb->len - offset; |
eaf85ca7f
|
747 748 |
if (subframe_len > remaining) goto purge; |
230fd28a9
|
749 |
offset += sizeof(struct ethhdr); |
230fd28a9
|
750 |
last = remaining <= subframe_len + padding; |
8b935ee2e
|
751 752 753 754 755 756 757 758 759 760 |
/* FIXME: should we really accept multicast DA? */ if ((check_da && !is_multicast_ether_addr(eth.h_dest) && !ether_addr_equal(check_da, eth.h_dest)) || (check_sa && !ether_addr_equal(check_sa, eth.h_source))) { offset += len + padding; continue; } /* reuse skb for the last subframe */ |
2b67f944f
|
761 |
if (!skb_is_nonlinear(skb) && !reuse_frag && last) { |
230fd28a9
|
762 |
skb_pull(skb, offset); |
eaf85ca7f
|
763 |
frame = skb; |
230fd28a9
|
764 765 |
reuse_skb = true; } else { |
2b67f944f
|
766 767 |
frame = __ieee80211_amsdu_copy(skb, hlen, offset, len, reuse_frag); |
eaf85ca7f
|
768 769 |
if (!frame) goto purge; |
230fd28a9
|
770 |
offset += len + padding; |
eaf85ca7f
|
771 772 773 774 775 776 777 778 |
} skb_reset_network_header(frame); frame->dev = skb->dev; frame->priority = skb->priority; payload = frame->data; ethertype = (payload[6] << 8) | payload[7]; |
ac422d3cc
|
779 |
if (likely((ether_addr_equal(payload, rfc1042_header) && |
eaf85ca7f
|
780 |
ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) || |
ac422d3cc
|
781 |
ether_addr_equal(payload, bridge_tunnel_header))) { |
230fd28a9
|
782 783 |
eth.h_proto = htons(ethertype); skb_pull(frame, ETH_ALEN + 2); |
eaf85ca7f
|
784 |
} |
230fd28a9
|
785 786 |
memcpy(skb_push(frame, sizeof(eth)), ð, sizeof(eth)); |
eaf85ca7f
|
787 788 |
__skb_queue_tail(list, frame); } |
230fd28a9
|
789 790 |
if (!reuse_skb) dev_kfree_skb(skb); |
eaf85ca7f
|
791 792 793 794 |
return; purge: __skb_queue_purge(list); |
eaf85ca7f
|
795 796 797 |
dev_kfree_skb(skb); } EXPORT_SYMBOL(ieee80211_amsdu_to_8023s); |
e31a16d6f
|
798 |
/* Given a data frame determine the 802.1p/1d tag to use. */ |
fa9ffc745
|
799 800 |
unsigned int cfg80211_classify8021d(struct sk_buff *skb, struct cfg80211_qos_map *qos_map) |
e31a16d6f
|
801 802 |
{ unsigned int dscp; |
c6ca5e28b
|
803 |
unsigned char vlan_priority; |
1fc9b7253
|
804 |
unsigned int ret; |
e31a16d6f
|
805 806 807 808 809 810 |
/* 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. */ |
1fc9b7253
|
811 812 813 814 |
if (skb->priority >= 256 && skb->priority <= 263) { ret = skb->priority - 256; goto out; } |
e31a16d6f
|
815 |
|
df8a39def
|
816 817 |
if (skb_vlan_tag_present(skb)) { vlan_priority = (skb_vlan_tag_get(skb) & VLAN_PRIO_MASK) |
c6ca5e28b
|
818 |
>> VLAN_PRIO_SHIFT; |
1fc9b7253
|
819 820 821 822 |
if (vlan_priority > 0) { ret = vlan_priority; goto out; } |
c6ca5e28b
|
823 |
} |
e31a16d6f
|
824 825 |
switch (skb->protocol) { case htons(ETH_P_IP): |
b156579b1
|
826 827 828 829 |
dscp = ipv4_get_dsfield(ip_hdr(skb)) & 0xfc; break; case htons(ETH_P_IPV6): dscp = ipv6_get_dsfield(ipv6_hdr(skb)) & 0xfc; |
e31a16d6f
|
830 |
break; |
960d97f95
|
831 832 833 834 835 836 837 838 |
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; |
1fc9b7253
|
839 |
ret = (ntohl(mpls->entry) & MPLS_LS_TC_MASK) |
960d97f95
|
840 |
>> MPLS_LS_TC_SHIFT; |
1fc9b7253
|
841 |
goto out; |
960d97f95
|
842 843 844 845 |
} case htons(ETH_P_80221): /* 802.21 is always network control traffic */ return 7; |
e31a16d6f
|
846 847 848 |
default: return 0; } |
fa9ffc745
|
849 850 851 852 |
if (qos_map) { unsigned int i, tmp_dscp = dscp >> 2; for (i = 0; i < qos_map->num_des; i++) { |
1fc9b7253
|
853 854 855 856 |
if (tmp_dscp == qos_map->dscp_exception[i].dscp) { ret = qos_map->dscp_exception[i].up; goto out; } |
fa9ffc745
|
857 858 859 860 |
} for (i = 0; i < 8; i++) { if (tmp_dscp >= qos_map->up[i].low && |
1fc9b7253
|
861 862 863 864 |
tmp_dscp <= qos_map->up[i].high) { ret = i; goto out; } |
fa9ffc745
|
865 866 |
} } |
1fc9b7253
|
867 868 869 |
ret = dscp >> 5; out: return array_index_nospec(ret, IEEE80211_NUM_TIDS); |
e31a16d6f
|
870 871 |
} EXPORT_SYMBOL(cfg80211_classify8021d); |
517357c68
|
872 |
|
49a68e0d8
|
873 |
const struct element *ieee80211_bss_get_elem(struct cfg80211_bss *bss, u8 id) |
517357c68
|
874 |
{ |
9caf03640
|
875 876 877 878 |
const struct cfg80211_bss_ies *ies; ies = rcu_dereference(bss->ies); if (!ies) |
517357c68
|
879 |
return NULL; |
9caf03640
|
880 |
|
49a68e0d8
|
881 |
return cfg80211_find_elem(id, ies->data, ies->len); |
517357c68
|
882 |
} |
49a68e0d8
|
883 |
EXPORT_SYMBOL(ieee80211_bss_get_elem); |
fffd0934b
|
884 885 886 |
void cfg80211_upload_connect_keys(struct wireless_dev *wdev) { |
f26cbf401
|
887 |
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
fffd0934b
|
888 889 890 891 892 |
struct net_device *dev = wdev->netdev; int i; if (!wdev->connect_keys) return; |
b8676221f
|
893 |
for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++) { |
fffd0934b
|
894 895 |
if (!wdev->connect_keys->params[i].cipher) continue; |
e35e4d28b
|
896 897 |
if (rdev_add_key(rdev, dev, i, false, NULL, &wdev->connect_keys->params[i])) { |
e9c0268f0
|
898 899 |
netdev_err(dev, "failed to set key %d ", i); |
1e056665e
|
900 901 |
continue; } |
d4f299786
|
902 903 904 905 906 907 |
if (wdev->connect_keys->def == i && rdev_set_default_key(rdev, dev, i, true, true)) { netdev_err(dev, "failed to set defkey %d ", i); continue; } |
fffd0934b
|
908 |
} |
453431a54
|
909 |
kfree_sensitive(wdev->connect_keys); |
fffd0934b
|
910 911 |
wdev->connect_keys = NULL; } |
3d54d2551
|
912 |
|
1f6fc43e6
|
913 |
void cfg80211_process_wdev_events(struct wireless_dev *wdev) |
3d54d2551
|
914 915 916 |
{ struct cfg80211_event *ev; unsigned long flags; |
3d54d2551
|
917 918 919 920 921 922 923 924 925 926 927 |
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: |
3d54d2551
|
928 |
__cfg80211_connect_result( |
5349a0f7b
|
929 930 931 |
wdev->netdev, &ev->cr, ev->cr.status == WLAN_STATUS_SUCCESS); |
3d54d2551
|
932 933 |
break; case EVENT_ROAMED: |
29ce6ecbb
|
934 |
__cfg80211_roamed(wdev, &ev->rm); |
3d54d2551
|
935 936 937 938 |
break; case EVENT_DISCONNECTED: __cfg80211_disconnected(wdev->netdev, ev->dc.ie, ev->dc.ie_len, |
80279fb7b
|
939 940 |
ev->dc.reason, !ev->dc.locally_generated); |
3d54d2551
|
941 942 |
break; case EVENT_IBSS_JOINED: |
fe94f3a4f
|
943 944 |
__cfg80211_ibss_joined(wdev->netdev, ev->ij.bssid, ev->ij.channel); |
3d54d2551
|
945 |
break; |
f04c22033
|
946 947 948 |
case EVENT_STOPPED: __cfg80211_leave(wiphy_to_rdev(wdev->wiphy), wdev); break; |
503c1fb98
|
949 950 951 |
case EVENT_PORT_AUTHORIZED: __cfg80211_port_authorized(wdev, ev->pa.bssid); break; |
3d54d2551
|
952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 |
} 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(); |
3d54d2551
|
967 |
|
53873f134
|
968 |
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) |
3d54d2551
|
969 |
cfg80211_process_wdev_events(wdev); |
3d54d2551
|
970 971 972 973 |
} int cfg80211_change_iface(struct cfg80211_registered_device *rdev, struct net_device *dev, enum nl80211_iftype ntype, |
818a986e4
|
974 |
struct vif_params *params) |
3d54d2551
|
975 976 977 |
{ int err; enum nl80211_iftype otype = dev->ieee80211_ptr->iftype; |
73fb08e24
|
978 |
ASSERT_RTNL(); |
3d54d2551
|
979 980 981 982 |
/* don't support changing VLANs, you just re-create them */ if (otype == NL80211_IFTYPE_AP_VLAN) return -EOPNOTSUPP; |
cb3b7d876
|
983 984 985 |
/* cannot change into P2P device or NAN */ if (ntype == NL80211_IFTYPE_P2P_DEVICE || ntype == NL80211_IFTYPE_NAN) |
98104fded
|
986 |
return -EOPNOTSUPP; |
3d54d2551
|
987 988 989 |
if (!rdev->ops->change_virtual_intf || !(rdev->wiphy.interface_modes & (1 << ntype))) return -EOPNOTSUPP; |
ad4bb6f88
|
990 |
/* if it's part of a bridge, reject changing type to station/ibss */ |
2e92a2d0e
|
991 |
if (netif_is_bridge_port(dev) && |
074ac8df9
|
992 993 994 |
(ntype == NL80211_IFTYPE_ADHOC || ntype == NL80211_IFTYPE_STATION || ntype == NL80211_IFTYPE_P2P_CLIENT)) |
ad4bb6f88
|
995 |
return -EBUSY; |
6cbfb1bb6
|
996 |
if (ntype != otype) { |
9bc383de3
|
997 |
dev->ieee80211_ptr->use_4addr = false; |
29cbe68c5
|
998 |
dev->ieee80211_ptr->mesh_id_up_len = 0; |
194ff52d4
|
999 |
wdev_lock(dev->ieee80211_ptr); |
fa9ffc745
|
1000 |
rdev_set_qos_map(rdev, dev, NULL); |
194ff52d4
|
1001 |
wdev_unlock(dev->ieee80211_ptr); |
9bc383de3
|
1002 |
|
3d54d2551
|
1003 |
switch (otype) { |
ac800140c
|
1004 |
case NL80211_IFTYPE_AP: |
7c8d5e03a
|
1005 |
cfg80211_stop_ap(rdev, dev, true); |
ac800140c
|
1006 |
break; |
3d54d2551
|
1007 1008 1009 1010 |
case NL80211_IFTYPE_ADHOC: cfg80211_leave_ibss(rdev, dev, false); break; case NL80211_IFTYPE_STATION: |
074ac8df9
|
1011 |
case NL80211_IFTYPE_P2P_CLIENT: |
83739b03d
|
1012 |
wdev_lock(dev->ieee80211_ptr); |
3d54d2551
|
1013 1014 |
cfg80211_disconnect(rdev, dev, WLAN_REASON_DEAUTH_LEAVING, true); |
83739b03d
|
1015 |
wdev_unlock(dev->ieee80211_ptr); |
3d54d2551
|
1016 1017 1018 1019 1020 1021 1022 1023 1024 |
break; case NL80211_IFTYPE_MESH_POINT: /* mesh should be handled? */ break; default: break; } cfg80211_process_rdev_events(rdev); |
c1d3ad84e
|
1025 |
cfg80211_mlme_purge_registrations(dev->ieee80211_ptr); |
3d54d2551
|
1026 |
} |
818a986e4
|
1027 |
err = rdev_change_virtual_intf(rdev, dev, ntype, params); |
3d54d2551
|
1028 1029 |
WARN_ON(!err && dev->ieee80211_ptr->iftype != ntype); |
9bc383de3
|
1030 1031 |
if (!err && params && params->use_4addr != -1) dev->ieee80211_ptr->use_4addr = params->use_4addr; |
ad4bb6f88
|
1032 1033 1034 1035 1036 1037 |
if (!err) { dev->priv_flags &= ~IFF_DONT_BRIDGE; switch (ntype) { case NL80211_IFTYPE_STATION: if (dev->ieee80211_ptr->use_4addr) break; |
df561f668
|
1038 |
fallthrough; |
6e0bd6c35
|
1039 |
case NL80211_IFTYPE_OCB: |
074ac8df9
|
1040 |
case NL80211_IFTYPE_P2P_CLIENT: |
ad4bb6f88
|
1041 1042 1043 |
case NL80211_IFTYPE_ADHOC: dev->priv_flags |= IFF_DONT_BRIDGE; break; |
074ac8df9
|
1044 |
case NL80211_IFTYPE_P2P_GO: |
ad4bb6f88
|
1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 |
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: |
2e161f78e
|
1055 |
case NUM_NL80211_IFTYPES: |
ad4bb6f88
|
1056 1057 |
/* not happening */ break; |
98104fded
|
1058 |
case NL80211_IFTYPE_P2P_DEVICE: |
cb3b7d876
|
1059 |
case NL80211_IFTYPE_NAN: |
98104fded
|
1060 1061 |
WARN_ON(1); break; |
ad4bb6f88
|
1062 1063 |
} } |
dbbae26af
|
1064 1065 1066 1067 |
if (!err && ntype != otype && netif_running(dev)) { cfg80211_update_iface_num(rdev, ntype, 1); cfg80211_update_iface_num(rdev, otype, -1); } |
3d54d2551
|
1068 1069 |
return err; } |
254416aae
|
1070 |
|
0c1eca4e2
|
1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 |
static u32 cfg80211_calculate_bitrate_ht(struct rate_info *rate) { int modulation, streams, bitrate; /* 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; } |
2a38075cd
|
1099 |
static u32 cfg80211_calculate_bitrate_dmg(struct rate_info *rate) |
95ddc1fc4
|
1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 |
{ 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]; } |
2a38075cd
|
1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 |
static u32 cfg80211_calculate_bitrate_edmg(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] = 13475, [7] = 15400, [8] = 19250, [9] = 23100, [10] = 25025, [11] = 26950, [12] = 30800, [13] = 38500, [14] = 46200, [15] = 50050, [16] = 53900, [17] = 57750, [18] = 69300, [19] = 75075, [20] = 80850, }; if (WARN_ON_ONCE(rate->mcs >= ARRAY_SIZE(__mcs2bitrate))) return 0; return __mcs2bitrate[rate->mcs] * rate->n_bonded_ch; } |
db9c64cf8
|
1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 |
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, |
8fdd136f2
|
1190 1191 |
/* not in the spec, but some devices use this: */ 86500000, |
db9c64cf8
|
1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 |
}, { 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; |
ca8fe2506
|
1229 1230 |
if (rate->mcs > 9) goto warn; |
db9c64cf8
|
1231 |
|
b51f3beec
|
1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 |
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: |
ca8fe2506
|
1245 |
goto warn; |
b51f3beec
|
1246 1247 1248 |
case RATE_INFO_BW_20: idx = 0; } |
db9c64cf8
|
1249 1250 1251 1252 1253 1254 1255 1256 1257 |
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; |
ca8fe2506
|
1258 1259 1260 1261 1262 |
warn: WARN_ONCE(1, "invalid rate bw=%d, mcs=%d, nss=%d ", rate->bw, rate->mcs, rate->nss); return 0; |
db9c64cf8
|
1263 |
} |
c4cbaf797
|
1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 |
static u32 cfg80211_calculate_bitrate_he(struct rate_info *rate) { #define SCALE 2048 u16 mcs_divisors[12] = { 34133, /* 16.666666... */ 17067, /* 8.333333... */ 11378, /* 5.555555... */ 8533, /* 4.166666... */ 5689, /* 2.777777... */ 4267, /* 2.083333... */ 3923, /* 1.851851... */ 3413, /* 1.666666... */ 2844, /* 1.388888... */ 2560, /* 1.250000... */ 2276, /* 1.111111... */ 2048, /* 1.000000... */ }; u32 rates_160M[3] = { 960777777, 907400000, 816666666 }; u32 rates_969[3] = { 480388888, 453700000, 408333333 }; u32 rates_484[3] = { 229411111, 216666666, 195000000 }; u32 rates_242[3] = { 114711111, 108333333, 97500000 }; u32 rates_106[3] = { 40000000, 37777777, 34000000 }; u32 rates_52[3] = { 18820000, 17777777, 16000000 }; u32 rates_26[3] = { 9411111, 8888888, 8000000 }; u64 tmp; u32 result; if (WARN_ON_ONCE(rate->mcs > 11)) return 0; if (WARN_ON_ONCE(rate->he_gi > NL80211_RATE_INFO_HE_GI_3_2)) return 0; if (WARN_ON_ONCE(rate->he_ru_alloc > NL80211_RATE_INFO_HE_RU_ALLOC_2x996)) return 0; if (WARN_ON_ONCE(rate->nss < 1 || rate->nss > 8)) return 0; if (rate->bw == RATE_INFO_BW_160) result = rates_160M[rate->he_gi]; else if (rate->bw == RATE_INFO_BW_80 || (rate->bw == RATE_INFO_BW_HE_RU && rate->he_ru_alloc == NL80211_RATE_INFO_HE_RU_ALLOC_996)) result = rates_969[rate->he_gi]; else if (rate->bw == RATE_INFO_BW_40 || (rate->bw == RATE_INFO_BW_HE_RU && rate->he_ru_alloc == NL80211_RATE_INFO_HE_RU_ALLOC_484)) result = rates_484[rate->he_gi]; else if (rate->bw == RATE_INFO_BW_20 || (rate->bw == RATE_INFO_BW_HE_RU && rate->he_ru_alloc == NL80211_RATE_INFO_HE_RU_ALLOC_242)) result = rates_242[rate->he_gi]; else if (rate->bw == RATE_INFO_BW_HE_RU && rate->he_ru_alloc == NL80211_RATE_INFO_HE_RU_ALLOC_106) result = rates_106[rate->he_gi]; else if (rate->bw == RATE_INFO_BW_HE_RU && rate->he_ru_alloc == NL80211_RATE_INFO_HE_RU_ALLOC_52) result = rates_52[rate->he_gi]; else if (rate->bw == RATE_INFO_BW_HE_RU && rate->he_ru_alloc == NL80211_RATE_INFO_HE_RU_ALLOC_26) result = rates_26[rate->he_gi]; |
344c9719c
|
1325 1326 1327 1328 |
else { WARN(1, "invalid HE MCS: bw:%d, ru:%d ", rate->bw, rate->he_ru_alloc); |
c4cbaf797
|
1329 |
return 0; |
344c9719c
|
1330 |
} |
c4cbaf797
|
1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 |
/* now scale to the appropriate MCS */ tmp = result; tmp *= SCALE; do_div(tmp, mcs_divisors[rate->mcs]); result = tmp; /* and take NSS, DCM into account */ result = (result * rate->nss) / 8; if (rate->he_dcm) result /= 2; |
25d16d124
|
1342 |
return result / 10000; |
c4cbaf797
|
1343 |
} |
8eb41c8df
|
1344 |
u32 cfg80211_calculate_bitrate(struct rate_info *rate) |
254416aae
|
1345 |
{ |
0c1eca4e2
|
1346 1347 |
if (rate->flags & RATE_INFO_FLAGS_MCS) return cfg80211_calculate_bitrate_ht(rate); |
2a38075cd
|
1348 1349 1350 1351 |
if (rate->flags & RATE_INFO_FLAGS_DMG) return cfg80211_calculate_bitrate_dmg(rate); if (rate->flags & RATE_INFO_FLAGS_EDMG) return cfg80211_calculate_bitrate_edmg(rate); |
db9c64cf8
|
1352 1353 |
if (rate->flags & RATE_INFO_FLAGS_VHT_MCS) return cfg80211_calculate_bitrate_vht(rate); |
c4cbaf797
|
1354 1355 |
if (rate->flags & RATE_INFO_FLAGS_HE_MCS) return cfg80211_calculate_bitrate_he(rate); |
254416aae
|
1356 |
|
0c1eca4e2
|
1357 |
return rate->legacy; |
254416aae
|
1358 |
} |
8097e1494
|
1359 |
EXPORT_SYMBOL(cfg80211_calculate_bitrate); |
56d1893d9
|
1360 |
|
c216e6417
|
1361 1362 1363 |
int cfg80211_get_p2p_attr(const u8 *ies, unsigned int len, enum ieee80211_p2p_attr_id attr, u8 *buf, unsigned int bufsize) |
0ee453552
|
1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 |
{ 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); |
2512b1b18
|
1460 |
static bool ieee80211_id_in_list(const u8 *ids, int n_ids, u8 id, bool id_ext) |
29464ccc7
|
1461 1462 |
{ int i; |
2512b1b18
|
1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 |
/* Make sure array values are legal */ if (WARN_ON(ids[n_ids - 1] == WLAN_EID_EXTENSION)) return false; i = 0; while (i < n_ids) { if (ids[i] == WLAN_EID_EXTENSION) { if (id_ext && (ids[i + 1] == id)) return true; i += 2; continue; } if (ids[i] == id && !id_ext) |
29464ccc7
|
1478 |
return true; |
2512b1b18
|
1479 1480 1481 |
i++; } |
29464ccc7
|
1482 1483 |
return false; } |
8ac634486
|
1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 |
static size_t skip_ie(const u8 *ies, size_t ielen, size_t pos) { /* we assume a validly formed IEs buffer */ u8 len = ies[pos + 1]; pos += 2 + len; /* the IE itself must have 255 bytes for fragments to follow */ if (len < 255) return pos; while (pos < ielen && ies[pos] == WLAN_EID_FRAGMENT) { len = ies[pos + 1]; pos += 2 + len; } return pos; } |
29464ccc7
|
1502 1503 1504 1505 1506 1507 |
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; |
2512b1b18
|
1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 |
while (pos < ielen) { u8 ext = 0; if (ies[pos] == WLAN_EID_EXTENSION) ext = 2; if ((pos + ext) >= ielen) break; if (!ieee80211_id_in_list(ids, n_ids, ies[pos + ext], ies[pos] == WLAN_EID_EXTENSION)) break; |
29464ccc7
|
1519 |
if (ies[pos] == WLAN_EID_RIC_DATA && n_after_ric) { |
8ac634486
|
1520 |
pos = skip_ie(ies, ielen, pos); |
29464ccc7
|
1521 |
|
2512b1b18
|
1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 |
while (pos < ielen) { if (ies[pos] == WLAN_EID_EXTENSION) ext = 2; else ext = 0; if ((pos + ext) >= ielen) break; if (!ieee80211_id_in_list(after_ric, n_after_ric, ies[pos + ext], ext == 2)) pos = skip_ie(ies, ielen, pos); |
312ca38dd
|
1536 1537 |
else break; |
2512b1b18
|
1538 |
} |
29464ccc7
|
1539 |
} else { |
8ac634486
|
1540 |
pos = skip_ie(ies, ielen, pos); |
29464ccc7
|
1541 1542 1543 1544 1545 1546 |
} } return pos; } EXPORT_SYMBOL(ieee80211_ie_split_ric); |
1ce3e82b0
|
1547 |
bool ieee80211_operating_class_to_band(u8 operating_class, |
57fbcce37
|
1548 |
enum nl80211_band *band) |
1ce3e82b0
|
1549 1550 1551 1552 |
{ switch (operating_class) { case 112: case 115 ... 127: |
954a86ef4
|
1553 |
case 128 ... 130: |
57fbcce37
|
1554 |
*band = NL80211_BAND_5GHZ; |
1ce3e82b0
|
1555 |
return true; |
852f04620
|
1556 1557 1558 |
case 131 ... 135: *band = NL80211_BAND_6GHZ; return true; |
1ce3e82b0
|
1559 1560 1561 1562 |
case 81: case 82: case 83: case 84: |
57fbcce37
|
1563 |
*band = NL80211_BAND_2GHZ; |
1ce3e82b0
|
1564 |
return true; |
55300a13d
|
1565 |
case 180: |
57fbcce37
|
1566 |
*band = NL80211_BAND_60GHZ; |
55300a13d
|
1567 |
return true; |
1ce3e82b0
|
1568 1569 1570 1571 1572 |
} return false; } EXPORT_SYMBOL(ieee80211_operating_class_to_band); |
a38700dd4
|
1573 1574 1575 1576 |
bool ieee80211_chandef_to_operating_class(struct cfg80211_chan_def *chandef, u8 *op_class) { u8 vht_opclass; |
8442938c3
|
1577 |
u32 freq = chandef->center_freq1; |
a38700dd4
|
1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 |
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) { |
ec649fed6
|
1597 1598 |
/* channel 14 is only for IEEE 802.11b */ if (chandef->width != NL80211_CHAN_WIDTH_20_NOHT) |
a38700dd4
|
1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 |
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 */ |
9cf0a0b4b
|
1690 |
if (freq >= 56160 + 2160 * 1 && freq <= 56160 + 2160 * 6) { |
a38700dd4
|
1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 |
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); |
4c8dea638
|
1702 1703 1704 |
static void cfg80211_calculate_bi_data(struct wiphy *wiphy, u32 new_beacon_int, u32 *beacon_int_gcd, bool *beacon_int_different) |
56d1893d9
|
1705 1706 |
{ struct wireless_dev *wdev; |
56d1893d9
|
1707 |
|
4c8dea638
|
1708 1709 |
*beacon_int_gcd = 0; *beacon_int_different = false; |
56d1893d9
|
1710 |
|
4c8dea638
|
1711 |
list_for_each_entry(wdev, &wiphy->wdev_list, list) { |
56d1893d9
|
1712 1713 |
if (!wdev->beacon_interval) continue; |
0c317a02c
|
1714 |
|
4c8dea638
|
1715 1716 |
if (!*beacon_int_gcd) { *beacon_int_gcd = wdev->beacon_interval; |
0c317a02c
|
1717 |
continue; |
4c8dea638
|
1718 |
} |
0c317a02c
|
1719 |
|
4c8dea638
|
1720 |
if (wdev->beacon_interval == *beacon_int_gcd) |
0c317a02c
|
1721 |
continue; |
4c8dea638
|
1722 1723 1724 |
*beacon_int_different = true; *beacon_int_gcd = gcd(*beacon_int_gcd, wdev->beacon_interval); } |
0c317a02c
|
1725 |
|
4c8dea638
|
1726 1727 1728 1729 |
if (new_beacon_int && *beacon_int_gcd != new_beacon_int) { if (*beacon_int_gcd) *beacon_int_different = true; *beacon_int_gcd = gcd(*beacon_int_gcd, new_beacon_int); |
56d1893d9
|
1730 |
} |
4c8dea638
|
1731 |
} |
56d1893d9
|
1732 |
|
4c8dea638
|
1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 |
int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev, enum nl80211_iftype iftype, u32 beacon_int) { /* * This is just a basic pre-condition check; if interface combinations * are possible the driver must already be checking those with a call * to cfg80211_check_combinations(), in which case we'll validate more * through the cfg80211_calculate_bi_data() call and code in * cfg80211_iter_combinations(). */ if (beacon_int < 10 || beacon_int > 10000) return -EINVAL; return 0; |
56d1893d9
|
1748 |
} |
7527a782e
|
1749 |
|
65a124dd7
|
1750 |
int cfg80211_iter_combinations(struct wiphy *wiphy, |
e227300c8
|
1751 |
struct iface_combination_params *params, |
65a124dd7
|
1752 1753 1754 |
void (*iter)(const struct ieee80211_iface_combination *c, void *data), void *data) |
cb2d956dd
|
1755 |
{ |
8c48b50a1
|
1756 1757 |
const struct ieee80211_regdomain *regdom; enum nl80211_dfs_regions region = 0; |
cb2d956dd
|
1758 1759 1760 |
int i, j, iftype; int num_interfaces = 0; u32 used_iftypes = 0; |
4c8dea638
|
1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 |
u32 beacon_int_gcd; bool beacon_int_different; /* * This is a bit strange, since the iteration used to rely only on * the data given by the driver, but here it now relies on context, * in form of the currently operating interfaces. * This is OK for all current users, and saves us from having to * push the GCD calculations into all the drivers. * In the future, this should probably rely more on data that's in * cfg80211 already - the only thing not would appear to be any new * interfaces (while being brought up) and channel/radar data. */ cfg80211_calculate_bi_data(wiphy, params->new_beacon_int, &beacon_int_gcd, &beacon_int_different); |
cb2d956dd
|
1776 |
|
e227300c8
|
1777 |
if (params->radar_detect) { |
8c48b50a1
|
1778 1779 1780 1781 1782 1783 |
rcu_read_lock(); regdom = rcu_dereference(cfg80211_regdomain); if (regdom) region = regdom->dfs_region; rcu_read_unlock(); } |
cb2d956dd
|
1784 |
for (iftype = 0; iftype < NUM_NL80211_IFTYPES; iftype++) { |
e227300c8
|
1785 1786 |
num_interfaces += params->iftype_num[iftype]; if (params->iftype_num[iftype] > 0 && |
e6f405112
|
1787 |
!cfg80211_iftype_allowed(wiphy, iftype, 0, 1)) |
cb2d956dd
|
1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 |
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; |
e227300c8
|
1800 |
if (params->num_different_channels > c->num_different_channels) |
cb2d956dd
|
1801 1802 1803 1804 1805 1806 1807 1808 |
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++) { |
e6f405112
|
1809 |
if (cfg80211_iftype_allowed(wiphy, iftype, 0, 1)) |
cb2d956dd
|
1810 1811 1812 1813 1814 |
continue; for (j = 0; j < c->n_limits; j++) { all_iftypes |= limits[j].types; if (!(limits[j].types & BIT(iftype))) continue; |
e227300c8
|
1815 |
if (limits[j].max < params->iftype_num[iftype]) |
cb2d956dd
|
1816 |
goto cont; |
e227300c8
|
1817 |
limits[j].max -= params->iftype_num[iftype]; |
cb2d956dd
|
1818 1819 |
} } |
e227300c8
|
1820 1821 |
if (params->radar_detect != (c->radar_detect_widths & params->radar_detect)) |
cb2d956dd
|
1822 |
goto cont; |
e227300c8
|
1823 |
if (params->radar_detect && c->radar_detect_regions && |
8c48b50a1
|
1824 1825 |
!(c->radar_detect_regions & BIT(region))) goto cont; |
cb2d956dd
|
1826 1827 1828 1829 1830 1831 1832 |
/* 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; |
4c8dea638
|
1833 |
if (beacon_int_gcd) { |
0c317a02c
|
1834 |
if (c->beacon_int_min_gcd && |
4c8dea638
|
1835 |
beacon_int_gcd < c->beacon_int_min_gcd) |
0507a3ac6
|
1836 |
goto cont; |
4c8dea638
|
1837 |
if (!c->beacon_int_min_gcd && beacon_int_different) |
0c317a02c
|
1838 1839 |
goto cont; } |
cb2d956dd
|
1840 1841 1842 |
/* This combination covered all interface types and * supported the requested numbers, so we're good. */ |
65a124dd7
|
1843 1844 |
(*iter)(c, data); |
cb2d956dd
|
1845 1846 1847 |
cont: kfree(limits); } |
65a124dd7
|
1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 |
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, |
e227300c8
|
1861 |
struct iface_combination_params *params) |
65a124dd7
|
1862 1863 |
{ int err, num = 0; |
e227300c8
|
1864 |
err = cfg80211_iter_combinations(wiphy, params, |
65a124dd7
|
1865 1866 1867 1868 1869 1870 1871 |
cfg80211_iter_sum_ifcombs, &num); if (err) return err; if (num == 0) return -EBUSY; return 0; |
cb2d956dd
|
1872 1873 |
} EXPORT_SYMBOL(cfg80211_check_combinations); |
34850ab25
|
1874 1875 1876 1877 1878 |
int ieee80211_get_ratemask(struct ieee80211_supported_band *sband, const u8 *rates, unsigned int n_rates, u32 *mask) { int i, j; |
a401d2bb3
|
1879 1880 |
if (!sband) return -EINVAL; |
34850ab25
|
1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 |
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; } |
11a2a357a
|
1909 |
|
bdfbec2d2
|
1910 1911 |
unsigned int ieee80211_get_num_supported_channels(struct wiphy *wiphy) { |
57fbcce37
|
1912 |
enum nl80211_band band; |
bdfbec2d2
|
1913 |
unsigned int n_channels = 0; |
57fbcce37
|
1914 |
for (band = 0; band < NUM_NL80211_BANDS; band++) |
bdfbec2d2
|
1915 1916 1917 1918 1919 1920 |
if (wiphy->bands[band]) n_channels += wiphy->bands[band]->n_channels; return n_channels; } EXPORT_SYMBOL(ieee80211_get_num_supported_channels); |
7406353d4
|
1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 |
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; |
3c12d0486
|
1934 |
memset(sinfo, 0, sizeof(*sinfo)); |
7406353d4
|
1935 1936 1937 |
return rdev_get_station(rdev, dev, mac_addr, sinfo); } EXPORT_SYMBOL(cfg80211_get_station); |
a442b761b
|
1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 |
void cfg80211_free_nan_func(struct cfg80211_nan_func *f) { int i; if (!f) return; kfree(f->serv_spec_info); kfree(f->srf_bf); kfree(f->srf_macs); for (i = 0; i < f->num_rx_filters; i++) kfree(f->rx_filters[i].filter); for (i = 0; i < f->num_tx_filters; i++) kfree(f->tx_filters[i].filter); kfree(f->rx_filters); kfree(f->tx_filters); kfree(f); } EXPORT_SYMBOL(cfg80211_free_nan_func); |
4787cfa08
|
1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 |
bool cfg80211_does_bw_fit_range(const struct ieee80211_freq_range *freq_range, u32 center_freq_khz, u32 bw_khz) { u32 start_freq_khz, end_freq_khz; start_freq_khz = center_freq_khz - (bw_khz / 2); end_freq_khz = center_freq_khz + (bw_khz / 2); if (start_freq_khz >= freq_range->start_freq_khz && end_freq_khz <= freq_range->end_freq_khz) return true; return false; } |
8689c051a
|
1973 1974 |
int cfg80211_sinfo_alloc_tid_stats(struct station_info *sinfo, gfp_t gfp) { |
1d211d431
|
1975 1976 1977 |
sinfo->pertid = kcalloc(IEEE80211_NUM_TIDS + 1, sizeof(*(sinfo->pertid)), gfp); |
8689c051a
|
1978 1979 1980 1981 1982 1983 |
if (!sinfo->pertid) return -ENOMEM; return 0; } EXPORT_SYMBOL(cfg80211_sinfo_alloc_tid_stats); |
11a2a357a
|
1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 |
/* 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); |
30ca1aa53
|
1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 |
/* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ struct iapp_layer2_update { u8 da[ETH_ALEN]; /* broadcast */ u8 sa[ETH_ALEN]; /* STA addr */ __be16 len; /* 6 */ u8 dsap; /* 0 */ u8 ssap; /* 0 */ u8 control; u8 xid_info[3]; } __packed; void cfg80211_send_layer2_update(struct net_device *dev, const u8 *addr) { struct iapp_layer2_update *msg; struct sk_buff *skb; /* Send Level 2 Update Frame to update forwarding tables in layer 2 * bridge devices */ skb = dev_alloc_skb(sizeof(*msg)); if (!skb) return; msg = skb_put(skb, sizeof(*msg)); /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ eth_broadcast_addr(msg->da); ether_addr_copy(msg->sa, addr); msg->len = htons(6); msg->dsap = 0; msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ msg->control = 0xaf; /* XID response lsb.1111F101. * F=0 (no poll command; unsolicited frame) */ msg->xid_info[0] = 0x81; /* XID format identifier */ msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ skb->dev = dev; skb->protocol = eth_type_trans(skb, dev); memset(skb->cb, 0, sizeof(skb->cb)); netif_rx_ni(skb); } EXPORT_SYMBOL(cfg80211_send_layer2_update); |
b0aa75f0b
|
2039 2040 2041 |
int ieee80211_get_vht_max_nss(struct ieee80211_vht_cap *cap, enum ieee80211_vht_chanwidth bw, |
9166cc497
|
2042 2043 |
int mcs, bool ext_nss_bw_capable, unsigned int max_vht_nss) |
b0aa75f0b
|
2044 2045 |
{ u16 map = le16_to_cpu(cap->supp_mcs.rx_mcs_map); |
b0aa75f0b
|
2046 2047 2048 2049 2050 2051 |
int ext_nss_bw; int supp_width; int i, mcs_encoding; if (map == 0xffff) return 0; |
9166cc497
|
2052 |
if (WARN_ON(mcs > 9 || max_vht_nss > 8)) |
b0aa75f0b
|
2053 2054 2055 2056 2057 2058 2059 |
return 0; if (mcs <= 7) mcs_encoding = 0; else if (mcs == 8) mcs_encoding = 1; else mcs_encoding = 2; |
9166cc497
|
2060 2061 2062 2063 |
if (!max_vht_nss) { /* find max_vht_nss for the given MCS */ for (i = 7; i >= 0; i--) { int supp = (map >> (2 * i)) & 3; |
b0aa75f0b
|
2064 |
|
9166cc497
|
2065 2066 |
if (supp == 3) continue; |
b0aa75f0b
|
2067 |
|
9166cc497
|
2068 2069 2070 2071 |
if (supp >= mcs_encoding) { max_vht_nss = i + 1; break; } |
b0aa75f0b
|
2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 |
} } if (!(cap->supp_mcs.tx_mcs_map & cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE))) return max_vht_nss; ext_nss_bw = le32_get_bits(cap->vht_cap_info, IEEE80211_VHT_CAP_EXT_NSS_BW_MASK); supp_width = le32_get_bits(cap->vht_cap_info, IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK); /* if not capable, treat ext_nss_bw as 0 */ if (!ext_nss_bw_capable) ext_nss_bw = 0; /* This is invalid */ if (supp_width == 3) return 0; /* This is an invalid combination so pretend nothing is supported */ if (supp_width == 2 && (ext_nss_bw == 1 || ext_nss_bw == 2)) return 0; /* * Cover all the special cases according to IEEE 802.11-2016 * Table 9-250. All other cases are either factor of 1 or not * valid/supported. */ switch (bw) { case IEEE80211_VHT_CHANWIDTH_USE_HT: case IEEE80211_VHT_CHANWIDTH_80MHZ: if ((supp_width == 1 || supp_width == 2) && ext_nss_bw == 3) return 2 * max_vht_nss; break; case IEEE80211_VHT_CHANWIDTH_160MHZ: if (supp_width == 0 && (ext_nss_bw == 1 || ext_nss_bw == 2)) |
93bc8ac49
|
2111 |
return max_vht_nss / 2; |
b0aa75f0b
|
2112 2113 |
if (supp_width == 0 && ext_nss_bw == 3) |
93bc8ac49
|
2114 |
return (3 * max_vht_nss) / 4; |
b0aa75f0b
|
2115 2116 2117 2118 2119 |
if (supp_width == 1 && ext_nss_bw == 3) return 2 * max_vht_nss; break; case IEEE80211_VHT_CHANWIDTH_80P80MHZ: |
93bc8ac49
|
2120 |
if (supp_width == 0 && ext_nss_bw == 1) |
b0aa75f0b
|
2121 2122 2123 |
return 0; /* not possible */ if (supp_width == 0 && ext_nss_bw == 2) |
93bc8ac49
|
2124 |
return max_vht_nss / 2; |
b0aa75f0b
|
2125 2126 |
if (supp_width == 0 && ext_nss_bw == 3) |
93bc8ac49
|
2127 |
return (3 * max_vht_nss) / 4; |
b0aa75f0b
|
2128 2129 2130 2131 2132 |
if (supp_width == 1 && ext_nss_bw == 0) return 0; /* not possible */ if (supp_width == 1 && ext_nss_bw == 1) |
93bc8ac49
|
2133 |
return max_vht_nss / 2; |
b0aa75f0b
|
2134 2135 |
if (supp_width == 1 && ext_nss_bw == 2) |
93bc8ac49
|
2136 |
return (3 * max_vht_nss) / 4; |
b0aa75f0b
|
2137 2138 2139 2140 2141 2142 2143 |
break; } /* not covered or invalid combination received */ return max_vht_nss; } EXPORT_SYMBOL(ieee80211_get_vht_max_nss); |
e6f405112
|
2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 |
bool cfg80211_iftype_allowed(struct wiphy *wiphy, enum nl80211_iftype iftype, bool is_4addr, u8 check_swif) { bool is_vlan = iftype == NL80211_IFTYPE_AP_VLAN; switch (check_swif) { case 0: if (is_vlan && is_4addr) return wiphy->flags & WIPHY_FLAG_4ADDR_AP; return wiphy->interface_modes & BIT(iftype); case 1: if (!(wiphy->software_iftypes & BIT(iftype)) && is_vlan) return wiphy->flags & WIPHY_FLAG_4ADDR_AP; return wiphy->software_iftypes & BIT(iftype); default: break; } return false; } EXPORT_SYMBOL(cfg80211_iftype_allowed); |