diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-19 21:00:30 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-19 21:00:30 +0000 |
commit | e54def4ad8144ab15f826416e2e0f290ef1901b4 (patch) | |
tree | 583f8d4bd95cd67c44ff37b878a7eddfca9ab97a /net/wireless/scan.c | |
parent | Adding upstream version 6.8.12. (diff) | |
download | linux-e54def4ad8144ab15f826416e2e0f290ef1901b4.tar.xz linux-e54def4ad8144ab15f826416e2e0f290ef1901b4.zip |
Adding upstream version 6.9.2.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'net/wireless/scan.c')
-rw-r--r-- | net/wireless/scan.c | 667 |
1 files changed, 275 insertions, 392 deletions
diff --git a/net/wireless/scan.c b/net/wireless/scan.c index f138f88be9..5a5dd3ce49 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -5,7 +5,7 @@ * Copyright 2008 Johannes Berg <johannes@sipsolutions.net> * Copyright 2013-2014 Intel Mobile Communications GmbH * Copyright 2016 Intel Deutschland GmbH - * Copyright (C) 2018-2023 Intel Corporation + * Copyright (C) 2018-2024 Intel Corporation */ #include <linux/kernel.h> #include <linux/slab.h> @@ -77,45 +77,6 @@ MODULE_PARM_DESC(bss_entries_limit, #define IEEE80211_SCAN_RESULT_EXPIRE (30 * HZ) -/** - * struct cfg80211_colocated_ap - colocated AP information - * - * @list: linked list to all colocated aPS - * @bssid: BSSID of the reported AP - * @ssid: SSID of the reported AP - * @ssid_len: length of the ssid - * @center_freq: frequency the reported AP is on - * @unsolicited_probe: the reported AP is part of an ESS, where all the APs - * that operate in the same channel as the reported AP and that might be - * detected by a STA receiving this frame, are transmitting unsolicited - * Probe Response frames every 20 TUs - * @oct_recommended: OCT is recommended to exchange MMPDUs with the reported AP - * @same_ssid: the reported AP has the same SSID as the reporting AP - * @multi_bss: the reported AP is part of a multiple BSSID set - * @transmitted_bssid: the reported AP is the transmitting BSSID - * @colocated_ess: all the APs that share the same ESS as the reported AP are - * colocated and can be discovered via legacy bands. - * @short_ssid_valid: short_ssid is valid and can be used - * @short_ssid: the short SSID for this SSID - * @psd_20: The 20MHz PSD EIRP of the primary 20MHz channel for the reported AP - */ -struct cfg80211_colocated_ap { - struct list_head list; - u8 bssid[ETH_ALEN]; - u8 ssid[IEEE80211_MAX_SSID_LEN]; - size_t ssid_len; - u32 short_ssid; - u32 center_freq; - u8 unsolicited_probe:1, - oct_recommended:1, - same_ssid:1, - multi_bss:1, - transmitted_bssid:1, - colocated_ess:1, - short_ssid_valid:1; - s8 psd_20; -}; - static void bss_free(struct cfg80211_internal_bss *bss) { struct cfg80211_bss_ies *ies; @@ -566,7 +527,8 @@ static int cfg80211_calc_short_ssid(const struct cfg80211_bss_ies *ies, return 0; } -static void cfg80211_free_coloc_ap_list(struct list_head *coloc_ap_list) +VISIBLE_IF_CFG80211_KUNIT void +cfg80211_free_coloc_ap_list(struct list_head *coloc_ap_list) { struct cfg80211_colocated_ap *ap, *tmp_ap; @@ -575,6 +537,7 @@ static void cfg80211_free_coloc_ap_list(struct list_head *coloc_ap_list) kfree(ap); } } +EXPORT_SYMBOL_IF_CFG80211_KUNIT(cfg80211_free_coloc_ap_list); static int cfg80211_parse_ap_info(struct cfg80211_colocated_ap *entry, const u8 *pos, u8 length, @@ -648,104 +611,140 @@ static int cfg80211_parse_ap_info(struct cfg80211_colocated_ap *entry, return 0; } -static int cfg80211_parse_colocated_ap(const struct cfg80211_bss_ies *ies, - struct list_head *list) +bool cfg80211_iter_rnr(const u8 *elems, size_t elems_len, + enum cfg80211_rnr_iter_ret + (*iter)(void *data, u8 type, + const struct ieee80211_neighbor_ap_info *info, + const u8 *tbtt_info, u8 tbtt_info_len), + void *iter_data) { - struct ieee80211_neighbor_ap_info *ap_info; - const struct element *elem, *ssid_elem; + const struct element *rnr; const u8 *pos, *end; - u32 s_ssid_tmp; - int n_coloc = 0, ret; - LIST_HEAD(ap_list); - ret = cfg80211_calc_short_ssid(ies, &ssid_elem, &s_ssid_tmp); - if (ret) - return 0; + for_each_element_id(rnr, WLAN_EID_REDUCED_NEIGHBOR_REPORT, + elems, elems_len) { + const struct ieee80211_neighbor_ap_info *info; - for_each_element_id(elem, WLAN_EID_REDUCED_NEIGHBOR_REPORT, - ies->data, ies->len) { - pos = elem->data; - end = elem->data + elem->datalen; + pos = rnr->data; + end = rnr->data + rnr->datalen; /* RNR IE may contain more than one NEIGHBOR_AP_INFO */ - while (pos + sizeof(*ap_info) <= end) { - enum nl80211_band band; - int freq; + while (sizeof(*info) <= end - pos) { u8 length, i, count; + u8 type; - ap_info = (void *)pos; - count = u8_get_bits(ap_info->tbtt_info_hdr, - IEEE80211_AP_INFO_TBTT_HDR_COUNT) + 1; - length = ap_info->tbtt_info_len; + info = (void *)pos; + count = u8_get_bits(info->tbtt_info_hdr, + IEEE80211_AP_INFO_TBTT_HDR_COUNT) + + 1; + length = info->tbtt_info_len; - pos += sizeof(*ap_info); + pos += sizeof(*info); - if (!ieee80211_operating_class_to_band(ap_info->op_class, - &band)) - break; + if (count * length > end - pos) + return false; - freq = ieee80211_channel_to_frequency(ap_info->channel, - band); + type = u8_get_bits(info->tbtt_info_hdr, + IEEE80211_AP_INFO_TBTT_HDR_TYPE); - if (end - pos < count * length) - break; + for (i = 0; i < count; i++) { + switch (iter(iter_data, type, info, + pos, length)) { + case RNR_ITER_CONTINUE: + break; + case RNR_ITER_BREAK: + return true; + case RNR_ITER_ERROR: + return false; + } - if (u8_get_bits(ap_info->tbtt_info_hdr, - IEEE80211_AP_INFO_TBTT_HDR_TYPE) != - IEEE80211_TBTT_INFO_TYPE_TBTT) { - pos += count * length; - continue; + pos += length; } + } - /* TBTT info must include bss param + BSSID + - * (short SSID or same_ssid bit to be set). - * ignore other options, and move to the - * next AP info - */ - if (band != NL80211_BAND_6GHZ || - !(length == offsetofend(struct ieee80211_tbtt_info_7_8_9, - bss_params) || - length == sizeof(struct ieee80211_tbtt_info_7_8_9) || - length >= offsetofend(struct ieee80211_tbtt_info_ge_11, - bss_params))) { - pos += count * length; - continue; - } + if (pos != end) + return false; + } - for (i = 0; i < count; i++) { - struct cfg80211_colocated_ap *entry; + return true; +} +EXPORT_SYMBOL_GPL(cfg80211_iter_rnr); - entry = kzalloc(sizeof(*entry) + IEEE80211_MAX_SSID_LEN, - GFP_ATOMIC); +struct colocated_ap_data { + const struct element *ssid_elem; + struct list_head ap_list; + u32 s_ssid_tmp; + int n_coloc; +}; - if (!entry) - goto error; +static enum cfg80211_rnr_iter_ret +cfg80211_parse_colocated_ap_iter(void *_data, u8 type, + const struct ieee80211_neighbor_ap_info *info, + const u8 *tbtt_info, u8 tbtt_info_len) +{ + struct colocated_ap_data *data = _data; + struct cfg80211_colocated_ap *entry; + enum nl80211_band band; - entry->center_freq = freq; + if (type != IEEE80211_TBTT_INFO_TYPE_TBTT) + return RNR_ITER_CONTINUE; - if (!cfg80211_parse_ap_info(entry, pos, length, - ssid_elem, - s_ssid_tmp)) { - n_coloc++; - list_add_tail(&entry->list, &ap_list); - } else { - kfree(entry); - } + if (!ieee80211_operating_class_to_band(info->op_class, &band)) + return RNR_ITER_CONTINUE; - pos += length; - } - } + /* TBTT info must include bss param + BSSID + (short SSID or + * same_ssid bit to be set). Ignore other options, and move to + * the next AP info + */ + if (band != NL80211_BAND_6GHZ || + !(tbtt_info_len == offsetofend(struct ieee80211_tbtt_info_7_8_9, + bss_params) || + tbtt_info_len == sizeof(struct ieee80211_tbtt_info_7_8_9) || + tbtt_info_len >= offsetofend(struct ieee80211_tbtt_info_ge_11, + bss_params))) + return RNR_ITER_CONTINUE; + + entry = kzalloc(sizeof(*entry) + IEEE80211_MAX_SSID_LEN, GFP_ATOMIC); + if (!entry) + return RNR_ITER_ERROR; + + entry->center_freq = + ieee80211_channel_to_frequency(info->channel, band); + + if (!cfg80211_parse_ap_info(entry, tbtt_info, tbtt_info_len, + data->ssid_elem, data->s_ssid_tmp)) { + data->n_coloc++; + list_add_tail(&entry->list, &data->ap_list); + } else { + kfree(entry); + } -error: - if (pos != end) { - cfg80211_free_coloc_ap_list(&ap_list); - return 0; - } + return RNR_ITER_CONTINUE; +} + +VISIBLE_IF_CFG80211_KUNIT int +cfg80211_parse_colocated_ap(const struct cfg80211_bss_ies *ies, + struct list_head *list) +{ + struct colocated_ap_data data = {}; + int ret; + + INIT_LIST_HEAD(&data.ap_list); + + ret = cfg80211_calc_short_ssid(ies, &data.ssid_elem, &data.s_ssid_tmp); + if (ret) + return 0; + + if (!cfg80211_iter_rnr(ies->data, ies->len, + cfg80211_parse_colocated_ap_iter, &data)) { + cfg80211_free_coloc_ap_list(&data.ap_list); + return 0; } - list_splice_tail(&ap_list, list); - return n_coloc; + list_splice_tail(&data.ap_list, list); + return data.n_coloc; } +EXPORT_SYMBOL_IF_CFG80211_KUNIT(cfg80211_parse_colocated_ap); static void cfg80211_scan_req_add_chan(struct cfg80211_scan_request *request, struct ieee80211_channel *chan, @@ -2122,6 +2121,35 @@ struct cfg80211_inform_single_bss_data { u64 cannot_use_reasons; }; +static bool cfg80211_6ghz_power_type_valid(const u8 *ie, size_t ielen, + const u32 flags) +{ + const struct element *tmp; + struct ieee80211_he_operation *he_oper; + + tmp = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_OPERATION, ie, ielen); + if (tmp && tmp->datalen >= sizeof(*he_oper) + 1) { + const struct ieee80211_he_6ghz_oper *he_6ghz_oper; + + he_oper = (void *)&tmp->data[1]; + he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper); + + if (!he_6ghz_oper) + return false; + + switch (u8_get_bits(he_6ghz_oper->control, + IEEE80211_HE_6GHZ_OPER_CTRL_REG_INFO)) { + case IEEE80211_6GHZ_CTRL_REG_LPI_AP: + return true; + case IEEE80211_6GHZ_CTRL_REG_SP_AP: + return !(flags & IEEE80211_CHAN_NO_6GHZ_AFC_CLIENT); + case IEEE80211_6GHZ_CTRL_REG_VLP_AP: + return !(flags & IEEE80211_CHAN_NO_6GHZ_VLP_CLIENT); + } + } + return false; +} + /* Returned bss is reference counted and must be cleaned up appropriately. */ static struct cfg80211_bss * cfg80211_inform_single_bss_data(struct wiphy *wiphy, @@ -2154,6 +2182,14 @@ cfg80211_inform_single_bss_data(struct wiphy *wiphy, if (!channel) return NULL; + if (channel->band == NL80211_BAND_6GHZ && + !cfg80211_6ghz_power_type_valid(data->ie, data->ielen, + channel->flags)) { + data->use_for = 0; + data->cannot_use_reasons = + NL80211_BSS_CANNOT_USE_6GHZ_PWR_MISMATCH; + } + memcpy(tmp.pub.bssid, data->bssid, ETH_ALEN); tmp.pub.channel = channel; if (data->bss_source != BSS_SOURCE_STA_PROFILE) @@ -2165,6 +2201,9 @@ cfg80211_inform_single_bss_data(struct wiphy *wiphy, tmp.ts_boottime = drv_data->boottime_ns; tmp.parent_tsf = drv_data->parent_tsf; ether_addr_copy(tmp.parent_bssid, drv_data->parent_bssid); + tmp.pub.chains = drv_data->chains; + memcpy(tmp.pub.chain_signal, drv_data->chain_signal, + IEEE80211_MAX_CHAINS); tmp.pub.use_for = data->use_for; tmp.pub.cannot_use_reasons = data->cannot_use_reasons; @@ -2208,6 +2247,7 @@ cfg80211_inform_single_bss_data(struct wiphy *wiphy, switch (data->ftype) { case CFG80211_BSS_FTYPE_BEACON: + case CFG80211_BSS_FTYPE_S1G_BEACON: ies->from_beacon = true; fallthrough; case CFG80211_BSS_FTYPE_UNKNOWN: @@ -2464,16 +2504,22 @@ ssize_t cfg80211_defragment_element(const struct element *elem, const u8 *ies, if (elem->id == WLAN_EID_EXTENSION) { copied = elem->datalen - 1; - if (copied > data_len) - return -ENOSPC; - memmove(data, elem->data + 1, copied); + if (data) { + if (copied > data_len) + return -ENOSPC; + + memmove(data, elem->data + 1, copied); + } } else { copied = elem->datalen; - if (copied > data_len) - return -ENOSPC; - memmove(data, elem->data, copied); + if (data) { + if (copied > data_len) + return -ENOSPC; + + memmove(data, elem->data, copied); + } } /* Fragmented elements must have 255 bytes */ @@ -2492,10 +2538,13 @@ ssize_t cfg80211_defragment_element(const struct element *elem, const u8 *ies, elem_datalen = elem->datalen; - if (copied + elem_datalen > data_len) - return -ENOSPC; + if (data) { + if (copied + elem_datalen > data_len) + return -ENOSPC; + + memmove(data + copied, elem->data, elem_datalen); + } - memmove(data + copied, elem->data, elem_datalen); copied += elem_datalen; /* Only the last fragment may be short */ @@ -2601,79 +2650,71 @@ error: return NULL; } -static u8 -cfg80211_rnr_info_for_mld_ap(const u8 *ie, size_t ielen, u8 mld_id, u8 link_id, - const struct ieee80211_neighbor_ap_info **ap_info, - u8 *param_ch_count) -{ - const struct ieee80211_neighbor_ap_info *info; - const struct element *rnr; - const u8 *pos, *end; - - for_each_element_id(rnr, WLAN_EID_REDUCED_NEIGHBOR_REPORT, ie, ielen) { - pos = rnr->data; - end = rnr->data + rnr->datalen; +struct tbtt_info_iter_data { + const struct ieee80211_neighbor_ap_info *ap_info; + u8 param_ch_count; + u32 use_for; + u8 mld_id, link_id; +}; - /* RNR IE may contain more than one NEIGHBOR_AP_INFO */ - while (sizeof(*info) <= end - pos) { - const struct ieee80211_rnr_mld_params *mld_params; - u16 params; - u8 length, i, count, mld_params_offset; - u8 type, lid; - u32 use_for; +static enum cfg80211_rnr_iter_ret +cfg802121_mld_ap_rnr_iter(void *_data, u8 type, + const struct ieee80211_neighbor_ap_info *info, + const u8 *tbtt_info, u8 tbtt_info_len) +{ + const struct ieee80211_rnr_mld_params *mld_params; + struct tbtt_info_iter_data *data = _data; + u8 link_id; + + if (type == IEEE80211_TBTT_INFO_TYPE_TBTT && + tbtt_info_len >= offsetofend(struct ieee80211_tbtt_info_ge_11, + mld_params)) + mld_params = (void *)(tbtt_info + + offsetof(struct ieee80211_tbtt_info_ge_11, + mld_params)); + else if (type == IEEE80211_TBTT_INFO_TYPE_MLD && + tbtt_info_len >= sizeof(struct ieee80211_rnr_mld_params)) + mld_params = (void *)tbtt_info; + else + return RNR_ITER_CONTINUE; - info = (void *)pos; - count = u8_get_bits(info->tbtt_info_hdr, - IEEE80211_AP_INFO_TBTT_HDR_COUNT) + 1; - length = info->tbtt_info_len; + link_id = le16_get_bits(mld_params->params, + IEEE80211_RNR_MLD_PARAMS_LINK_ID); - pos += sizeof(*info); + if (data->mld_id != mld_params->mld_id) + return RNR_ITER_CONTINUE; - if (count * length > end - pos) - return 0; + if (data->link_id != link_id) + return RNR_ITER_CONTINUE; - type = u8_get_bits(info->tbtt_info_hdr, - IEEE80211_AP_INFO_TBTT_HDR_TYPE); + data->ap_info = info; + data->param_ch_count = + le16_get_bits(mld_params->params, + IEEE80211_RNR_MLD_PARAMS_BSS_CHANGE_COUNT); - if (type == IEEE80211_TBTT_INFO_TYPE_TBTT && - length >= - offsetofend(struct ieee80211_tbtt_info_ge_11, - mld_params)) { - mld_params_offset = - offsetof(struct ieee80211_tbtt_info_ge_11, mld_params); - use_for = NL80211_BSS_USE_FOR_ALL; - } else if (type == IEEE80211_TBTT_INFO_TYPE_MLD && - length >= sizeof(struct ieee80211_rnr_mld_params)) { - mld_params_offset = 0; - use_for = NL80211_BSS_USE_FOR_MLD_LINK; - } else { - pos += count * length; - continue; - } - - for (i = 0; i < count; i++) { - mld_params = (void *)pos + mld_params_offset; - params = le16_to_cpu(mld_params->params); + if (type == IEEE80211_TBTT_INFO_TYPE_TBTT) + data->use_for = NL80211_BSS_USE_FOR_ALL; + else + data->use_for = NL80211_BSS_USE_FOR_MLD_LINK; + return RNR_ITER_BREAK; +} - lid = u16_get_bits(params, - IEEE80211_RNR_MLD_PARAMS_LINK_ID); +static u8 +cfg80211_rnr_info_for_mld_ap(const u8 *ie, size_t ielen, u8 mld_id, u8 link_id, + const struct ieee80211_neighbor_ap_info **ap_info, + u8 *param_ch_count) +{ + struct tbtt_info_iter_data data = { + .mld_id = mld_id, + .link_id = link_id, + }; - if (mld_id == mld_params->mld_id && - link_id == lid) { - *ap_info = info; - *param_ch_count = - le16_get_bits(mld_params->params, - IEEE80211_RNR_MLD_PARAMS_BSS_CHANGE_COUNT); + cfg80211_iter_rnr(ie, ielen, cfg802121_mld_ap_rnr_iter, &data); - return use_for; - } + *ap_info = data.ap_info; + *param_ch_count = data.param_ch_count; - pos += length; - } - } - } - - return 0; + return data.use_for; } static struct element * @@ -2795,17 +2836,16 @@ cfg80211_parse_ml_elem_sta_data(struct wiphy *wiphy, struct cfg80211_bss *bss; u8 mld_id, reporter_link_id, bss_change_count; u16 seen_links = 0; - const u8 *pos; u8 i; - if (!ieee80211_mle_size_ok(elem->data + 1, elem->datalen - 1)) + if (!ieee80211_mle_type_ok(elem->data + 1, + IEEE80211_ML_CONTROL_TYPE_BASIC, + elem->datalen - 1)) return; - ml_elem = (void *)elem->data + 1; + ml_elem = (void *)(elem->data + 1); control = le16_to_cpu(ml_elem->control); - if (u16_get_bits(control, IEEE80211_ML_CONTROL_TYPE) != - IEEE80211_ML_CONTROL_TYPE_BASIC) - return; + ml_common_len = ml_elem->variable[0]; /* Must be present when transmitted by an AP (in a probe response) */ if (!(control & IEEE80211_MLC_BASIC_PRES_BSS_PARAM_CH_CNT) || @@ -2813,24 +2853,8 @@ cfg80211_parse_ml_elem_sta_data(struct wiphy *wiphy, !(control & IEEE80211_MLC_BASIC_PRES_MLD_CAPA_OP)) return; - ml_common_len = ml_elem->variable[0]; - - /* length + MLD MAC address */ - pos = ml_elem->variable + 1 + 6; - - reporter_link_id = pos[0]; - pos += 1; - - bss_change_count = pos[0]; - pos += 1; - - if (u16_get_bits(control, IEEE80211_MLC_BASIC_PRES_MED_SYNC_DELAY)) - pos += 2; - if (u16_get_bits(control, IEEE80211_MLC_BASIC_PRES_EML_CAPA)) - pos += 2; - - /* MLD capabilities and operations */ - pos += 2; + reporter_link_id = ieee80211_mle_get_link_id(elem->data + 1); + bss_change_count = ieee80211_mle_get_bss_param_ch_cnt(elem->data + 1); /* * The MLD ID of the reporting AP is always zero. It is set if the AP @@ -2838,15 +2862,7 @@ cfg80211_parse_ml_elem_sta_data(struct wiphy *wiphy, * relating to a nontransmitted BSS (matching the Multi-BSSID Index, * Draft P802.11be_D3.2, 35.3.4.2) */ - if (u16_get_bits(control, IEEE80211_MLC_BASIC_PRES_MLD_ID)) { - mld_id = *pos; - pos += 1; - } else { - mld_id = 0; - } - - /* Extended MLD capabilities and operations */ - pos += 2; + mld_id = ieee80211_mle_get_mld_id(elem->data + 1); /* Fully defrag the ML element for sta information/profile iteration */ mle = cfg80211_defrag_mle(elem, tx_data->ie, tx_data->ielen, gfp); @@ -3052,6 +3068,10 @@ cfg80211_inform_bss_data(struct wiphy *wiphy, if (!res) return NULL; + /* don't do any further MBSSID/ML handling for S1G */ + if (ftype == CFG80211_BSS_FTYPE_S1G_BEACON) + return res; + cfg80211_parse_mbssid_data(wiphy, &inform_data, res, gfp); cfg80211_parse_ml_sta_data(wiphy, &inform_data, res, gfp); @@ -3060,59 +3080,22 @@ cfg80211_inform_bss_data(struct wiphy *wiphy, } EXPORT_SYMBOL(cfg80211_inform_bss_data); -static bool cfg80211_uhb_power_type_valid(const u8 *ie, - size_t ielen, - const u32 flags) -{ - const struct element *tmp; - struct ieee80211_he_operation *he_oper; - - tmp = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_OPERATION, ie, ielen); - if (tmp && tmp->datalen >= sizeof(*he_oper) + 1) { - const struct ieee80211_he_6ghz_oper *he_6ghz_oper; - - he_oper = (void *)&tmp->data[1]; - he_6ghz_oper = ieee80211_he_6ghz_oper(he_oper); - - if (!he_6ghz_oper) - return false; - - switch (u8_get_bits(he_6ghz_oper->control, - IEEE80211_HE_6GHZ_OPER_CTRL_REG_INFO)) { - case IEEE80211_6GHZ_CTRL_REG_LPI_AP: - return true; - case IEEE80211_6GHZ_CTRL_REG_SP_AP: - return !(flags & IEEE80211_CHAN_NO_UHB_AFC_CLIENT); - case IEEE80211_6GHZ_CTRL_REG_VLP_AP: - return !(flags & IEEE80211_CHAN_NO_UHB_VLP_CLIENT); - } - } - return false; -} - -/* cfg80211_inform_bss_width_frame helper */ -static struct cfg80211_bss * -cfg80211_inform_single_bss_frame_data(struct wiphy *wiphy, - struct cfg80211_inform_bss *data, - struct ieee80211_mgmt *mgmt, size_t len, - gfp_t gfp) +struct cfg80211_bss * +cfg80211_inform_bss_frame_data(struct wiphy *wiphy, + struct cfg80211_inform_bss *data, + struct ieee80211_mgmt *mgmt, size_t len, + gfp_t gfp) { - struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); - struct cfg80211_internal_bss tmp = {}, *res; - struct cfg80211_bss_ies *ies; - struct ieee80211_channel *channel; - bool signal_valid; + size_t min_hdr_len = offsetof(struct ieee80211_mgmt, + u.probe_resp.variable); struct ieee80211_ext *ext = NULL; - u8 *bssid, *variable; - u16 capability, beacon_int; - size_t ielen, min_hdr_len = offsetof(struct ieee80211_mgmt, - u.probe_resp.variable); - int bss_type; - - BUILD_BUG_ON(offsetof(struct ieee80211_mgmt, u.probe_resp.variable) != - offsetof(struct ieee80211_mgmt, u.beacon.variable)); - - trace_cfg80211_inform_bss_frame(wiphy, data, mgmt, len); + enum cfg80211_bss_frame_type ftype; + u16 beacon_interval; + const u8 *bssid; + u16 capability; + const u8 *ie; + size_t ielen; + u64 tsf; if (WARN_ON(!mgmt)) return NULL; @@ -3120,9 +3103,10 @@ cfg80211_inform_single_bss_frame_data(struct wiphy *wiphy, if (WARN_ON(!wiphy)) return NULL; - if (WARN_ON(wiphy->signal_type == CFG80211_SIGNAL_TYPE_UNSPEC && - (data->signal < 0 || data->signal > 100))) - return NULL; + BUILD_BUG_ON(offsetof(struct ieee80211_mgmt, u.probe_resp.variable) != + offsetof(struct ieee80211_mgmt, u.beacon.variable)); + + trace_cfg80211_inform_bss_frame(wiphy, data, mgmt, len); if (ieee80211_is_s1g_beacon(mgmt->frame_control)) { ext = (void *) mgmt; @@ -3136,32 +3120,17 @@ cfg80211_inform_single_bss_frame_data(struct wiphy *wiphy, return NULL; ielen = len - min_hdr_len; - variable = mgmt->u.probe_resp.variable; - if (ext) { - if (ieee80211_is_s1g_short_beacon(mgmt->frame_control)) - variable = ext->u.s1g_short_beacon.variable; - else - variable = ext->u.s1g_beacon.variable; - } - - channel = cfg80211_get_bss_channel(wiphy, variable, ielen, data->chan); - if (!channel) - return NULL; - - if (channel->band == NL80211_BAND_6GHZ && - !cfg80211_uhb_power_type_valid(variable, ielen, channel->flags)) { - data->restrict_use = 1; - data->use_for = 0; - data->cannot_use_reasons = - NL80211_BSS_CANNOT_USE_UHB_PWR_MISMATCH; - } - + ie = mgmt->u.probe_resp.variable; if (ext) { const struct ieee80211_s1g_bcn_compat_ie *compat; const struct element *elem; - elem = cfg80211_find_elem(WLAN_EID_S1G_BCN_COMPAT, - variable, ielen); + if (ieee80211_is_s1g_short_beacon(mgmt->frame_control)) + ie = ext->u.s1g_short_beacon.variable; + else + ie = ext->u.s1g_beacon.variable; + + elem = cfg80211_find_elem(WLAN_EID_S1G_BCN_COMPAT, ie, ielen); if (!elem) return NULL; if (elem->datalen < sizeof(*compat)) @@ -3169,112 +3138,26 @@ cfg80211_inform_single_bss_frame_data(struct wiphy *wiphy, compat = (void *)elem->data; bssid = ext->u.s1g_beacon.sa; capability = le16_to_cpu(compat->compat_info); - beacon_int = le16_to_cpu(compat->beacon_int); + beacon_interval = le16_to_cpu(compat->beacon_int); } else { bssid = mgmt->bssid; - beacon_int = le16_to_cpu(mgmt->u.probe_resp.beacon_int); + beacon_interval = le16_to_cpu(mgmt->u.probe_resp.beacon_int); capability = le16_to_cpu(mgmt->u.probe_resp.capab_info); } - if (channel->band == NL80211_BAND_60GHZ) { - bss_type = capability & WLAN_CAPABILITY_DMG_TYPE_MASK; - if (bss_type == WLAN_CAPABILITY_DMG_TYPE_AP || - bss_type == WLAN_CAPABILITY_DMG_TYPE_PBSS) - regulatory_hint_found_beacon(wiphy, channel, gfp); - } else { - if (capability & WLAN_CAPABILITY_ESS) - regulatory_hint_found_beacon(wiphy, channel, gfp); - } - - ies = kzalloc(sizeof(*ies) + ielen, gfp); - if (!ies) - return NULL; - ies->len = ielen; - ies->tsf = le64_to_cpu(mgmt->u.probe_resp.timestamp); - ies->from_beacon = ieee80211_is_beacon(mgmt->frame_control) || - ieee80211_is_s1g_beacon(mgmt->frame_control); - memcpy(ies->data, variable, ielen); + tsf = le64_to_cpu(mgmt->u.probe_resp.timestamp); if (ieee80211_is_probe_resp(mgmt->frame_control)) - rcu_assign_pointer(tmp.pub.proberesp_ies, ies); + ftype = CFG80211_BSS_FTYPE_PRESP; + else if (ext) + ftype = CFG80211_BSS_FTYPE_S1G_BEACON; else - rcu_assign_pointer(tmp.pub.beacon_ies, ies); - rcu_assign_pointer(tmp.pub.ies, ies); + ftype = CFG80211_BSS_FTYPE_BEACON; - memcpy(tmp.pub.bssid, bssid, ETH_ALEN); - tmp.pub.beacon_interval = beacon_int; - tmp.pub.capability = capability; - tmp.pub.channel = channel; - tmp.pub.signal = data->signal; - tmp.ts_boottime = data->boottime_ns; - tmp.parent_tsf = data->parent_tsf; - tmp.pub.chains = data->chains; - memcpy(tmp.pub.chain_signal, data->chain_signal, IEEE80211_MAX_CHAINS); - ether_addr_copy(tmp.parent_bssid, data->parent_bssid); - tmp.pub.use_for = data->restrict_use ? - data->use_for : - NL80211_BSS_USE_FOR_ALL; - tmp.pub.cannot_use_reasons = data->cannot_use_reasons; - - signal_valid = data->chan == channel; - spin_lock_bh(&rdev->bss_lock); - res = __cfg80211_bss_update(rdev, &tmp, signal_valid, jiffies); - if (!res) - goto drop; - - rdev_inform_bss(rdev, &res->pub, ies, data->drv_data); - - spin_unlock_bh(&rdev->bss_lock); - - trace_cfg80211_return_bss(&res->pub); - /* __cfg80211_bss_update gives us a referenced result */ - return &res->pub; - -drop: - spin_unlock_bh(&rdev->bss_lock); - return NULL; -} - -struct cfg80211_bss * -cfg80211_inform_bss_frame_data(struct wiphy *wiphy, - struct cfg80211_inform_bss *data, - struct ieee80211_mgmt *mgmt, size_t len, - gfp_t gfp) -{ - struct cfg80211_inform_single_bss_data inform_data = { - .drv_data = data, - .ie = mgmt->u.probe_resp.variable, - .ielen = len - offsetof(struct ieee80211_mgmt, - u.probe_resp.variable), - .use_for = data->restrict_use ? - data->use_for : - NL80211_BSS_USE_FOR_ALL, - .cannot_use_reasons = data->cannot_use_reasons, - }; - struct cfg80211_bss *res; - - res = cfg80211_inform_single_bss_frame_data(wiphy, data, mgmt, - len, gfp); - if (!res) - return NULL; - - /* don't do any further MBSSID/ML handling for S1G */ - if (ieee80211_is_s1g_beacon(mgmt->frame_control)) - return res; - - inform_data.ftype = ieee80211_is_beacon(mgmt->frame_control) ? - CFG80211_BSS_FTYPE_BEACON : CFG80211_BSS_FTYPE_PRESP; - memcpy(inform_data.bssid, mgmt->bssid, ETH_ALEN); - inform_data.tsf = le64_to_cpu(mgmt->u.probe_resp.timestamp); - inform_data.beacon_interval = - le16_to_cpu(mgmt->u.probe_resp.beacon_int); - - /* process each non-transmitting bss */ - cfg80211_parse_mbssid_data(wiphy, &inform_data, res, gfp); - - cfg80211_parse_ml_sta_data(wiphy, &inform_data, res, gfp); - - return res; + return cfg80211_inform_bss_data(wiphy, data, ftype, + bssid, tsf, capability, + beacon_interval, ie, ielen, + gfp); } EXPORT_SYMBOL(cfg80211_inform_bss_frame_data); |