diff options
Diffstat (limited to 'net/mac80211')
| -rw-r--r-- | net/mac80211/scan.c | 150 |
1 files changed, 80 insertions, 70 deletions
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index b58f75da9c84..20211cbc63f4 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -58,6 +58,85 @@ static bool is_uapsd_supported(struct ieee802_11_elems *elems) return qos_info & IEEE80211_WMM_IE_AP_QOSINFO_UAPSD; } +static void +ieee80211_update_bss_from_elems(struct ieee80211_local *local, + struct ieee80211_bss *bss, + struct ieee802_11_elems *elems, + struct ieee80211_rx_status *rx_status, + bool beacon) +{ + int clen, srlen; + + if (beacon) + bss->device_ts_beacon = rx_status->device_timestamp; + else + bss->device_ts_presp = rx_status->device_timestamp; + + if (elems->parse_error) { + if (beacon) + bss->corrupt_data |= IEEE80211_BSS_CORRUPT_BEACON; + else + bss->corrupt_data |= IEEE80211_BSS_CORRUPT_PROBE_RESP; + } else { + if (beacon) + bss->corrupt_data &= ~IEEE80211_BSS_CORRUPT_BEACON; + else + bss->corrupt_data &= ~IEEE80211_BSS_CORRUPT_PROBE_RESP; + } + + /* save the ERP value so that it is available at association time */ + if (elems->erp_info && (!elems->parse_error || + !(bss->valid_data & IEEE80211_BSS_VALID_ERP))) { + bss->erp_value = elems->erp_info[0]; + bss->has_erp_value = true; + if (!elems->parse_error) + bss->valid_data |= IEEE80211_BSS_VALID_ERP; + } + + /* replace old supported rates if we get new values */ + if (!elems->parse_error || + !(bss->valid_data & IEEE80211_BSS_VALID_RATES)) { + srlen = 0; + if (elems->supp_rates) { + clen = IEEE80211_MAX_SUPP_RATES; + if (clen > elems->supp_rates_len) + clen = elems->supp_rates_len; + memcpy(bss->supp_rates, elems->supp_rates, clen); + srlen += clen; + } + if (elems->ext_supp_rates) { + clen = IEEE80211_MAX_SUPP_RATES - srlen; + if (clen > elems->ext_supp_rates_len) + clen = elems->ext_supp_rates_len; + memcpy(bss->supp_rates + srlen, elems->ext_supp_rates, + clen); + srlen += clen; + } + if (srlen) { + bss->supp_rates_len = srlen; + if (!elems->parse_error) + bss->valid_data |= IEEE80211_BSS_VALID_RATES; + } + } + + if (!elems->parse_error || + !(bss->valid_data & IEEE80211_BSS_VALID_WMM)) { + bss->wmm_used = elems->wmm_param || elems->wmm_info; + bss->uapsd_supported = is_uapsd_supported(elems); + if (!elems->parse_error) + bss->valid_data |= IEEE80211_BSS_VALID_WMM; + } + + if (beacon) { + struct ieee80211_supported_band *sband = + local->hw.wiphy->bands[rx_status->band]; + if (!(rx_status->encoding == RX_ENC_HT) && + !(rx_status->encoding == RX_ENC_VHT)) + bss->beacon_rate = + &sband->bitrates[rx_status->rate_idx]; + } +} + struct ieee80211_bss * ieee80211_bss_info_update(struct ieee80211_local *local, struct ieee80211_rx_status *rx_status, @@ -67,7 +146,6 @@ ieee80211_bss_info_update(struct ieee80211_local *local, bool beacon = ieee80211_is_beacon(mgmt->frame_control); struct cfg80211_bss *cbss; struct ieee80211_bss *bss; - int clen, srlen; struct cfg80211_inform_bss bss_meta = { .boottime_ns = rx_status->boottime_ns, }; @@ -132,75 +210,7 @@ ieee80211_bss_info_update(struct ieee80211_local *local, rx_status->flag |= RX_FLAG_NO_SIGNAL_VAL; bss = (void *)cbss->priv; - - if (beacon) - bss->device_ts_beacon = rx_status->device_timestamp; - else - bss->device_ts_presp = rx_status->device_timestamp; - - if (elems.parse_error) { - if (beacon) - bss->corrupt_data |= IEEE80211_BSS_CORRUPT_BEACON; - else - bss->corrupt_data |= IEEE80211_BSS_CORRUPT_PROBE_RESP; - } else { - if (beacon) - bss->corrupt_data &= ~IEEE80211_BSS_CORRUPT_BEACON; - else - bss->corrupt_data &= ~IEEE80211_BSS_CORRUPT_PROBE_RESP; - } - - /* save the ERP value so that it is available at association time */ - if (elems.erp_info && (!elems.parse_error || - !(bss->valid_data & IEEE80211_BSS_VALID_ERP))) { - bss->erp_value = elems.erp_info[0]; - bss->has_erp_value = true; - if (!elems.parse_error) - bss->valid_data |= IEEE80211_BSS_VALID_ERP; - } - - /* replace old supported rates if we get new values */ - if (!elems.parse_error || - !(bss->valid_data & IEEE80211_BSS_VALID_RATES)) { - srlen = 0; - if (elems.supp_rates) { - clen = IEEE80211_MAX_SUPP_RATES; - if (clen > elems.supp_rates_len) - clen = elems.supp_rates_len; - memcpy(bss->supp_rates, elems.supp_rates, clen); - srlen += clen; - } - if (elems.ext_supp_rates) { - clen = IEEE80211_MAX_SUPP_RATES - srlen; - if (clen > elems.ext_supp_rates_len) - clen = elems.ext_supp_rates_len; - memcpy(bss->supp_rates + srlen, elems.ext_supp_rates, - clen); - srlen += clen; - } - if (srlen) { - bss->supp_rates_len = srlen; - if (!elems.parse_error) - bss->valid_data |= IEEE80211_BSS_VALID_RATES; - } - } - - if (!elems.parse_error || - !(bss->valid_data & IEEE80211_BSS_VALID_WMM)) { - bss->wmm_used = elems.wmm_param || elems.wmm_info; - bss->uapsd_supported = is_uapsd_supported(&elems); - if (!elems.parse_error) - bss->valid_data |= IEEE80211_BSS_VALID_WMM; - } - - if (beacon) { - struct ieee80211_supported_band *sband = - local->hw.wiphy->bands[rx_status->band]; - if (!(rx_status->encoding == RX_ENC_HT) && - !(rx_status->encoding == RX_ENC_VHT)) - bss->beacon_rate = - &sband->bitrates[rx_status->rate_idx]; - } + ieee80211_update_bss_from_elems(local, bss, &elems, rx_status, beacon); return bss; } |