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mac80211: move the bss update from elements to an helper 

This will allow iterating over multiple BSSs inside
cfg80211_bss, in case of multiple BSSID.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Sara Sharon 2019-01-16 20:35:38 +02:00 committed by Johannes Berg
parent 4abb52a46e
commit fcea7db504
1 changed files with 80 additions and 70 deletions
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150
net/mac80211/scan.c
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@ -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;
}