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scan: Use wiphy_estimate_data_rate
This commit is contained in:
Denis Kenzior
parent
74761fcdd3
commit
709b77794b
62
src/scan.c
62
src/scan.c
@ -999,18 +999,6 @@ static bool scan_parse_bss_information_elements(struct scan_bss *bss,
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bss->ssid_len = iter.len;
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have_ssid = true;
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break;
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case IE_TYPE_SUPPORTED_RATES:
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if (iter.len > 8)
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return false;
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bss->has_sup_rates = true;
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memcpy(bss->supp_rates_ie, iter.data - 2, iter.len + 2);
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break;
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case IE_TYPE_EXTENDED_SUPPORTED_RATES:
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bss->ext_supp_rates_ie = l_memdup(iter.data - 2,
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iter.len + 2);
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break;
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case IE_TYPE_RSN:
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if (!bss->rsne)
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bss->rsne = l_memdup(iter.data - 2,
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@ -1056,20 +1044,10 @@ static bool scan_parse_bss_information_elements(struct scan_bss *bss,
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break;
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case IE_TYPE_HT_CAPABILITIES:
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if (iter.len != 26)
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return false;
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bss->ht_capable = true;
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memcpy(bss->ht_ie, iter.data - 2, iter.len + 2);
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break;
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case IE_TYPE_VHT_CAPABILITIES:
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if (iter.len != 12)
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return false;
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bss->vht_capable = true;
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memcpy(bss->vht_ie, iter.data - 2, iter.len + 2);
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break;
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case IE_TYPE_ADVERTISEMENT_PROTOCOL:
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if (iter.len < 2)
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@ -1164,6 +1142,7 @@ static bool scan_parse_bss_information_elements(struct scan_bss *bss,
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}
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static struct scan_bss *scan_parse_attr_bss(struct l_genl_attr *attr,
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struct wiphy *wiphy,
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uint32_t *out_seen_ms_ago)
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{
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uint16_t type, len;
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@ -1247,8 +1226,16 @@ static struct scan_bss *scan_parse_attr_bss(struct l_genl_attr *attr,
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memcmp(ies, beacon_ies, ies_len)))
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bss->source_frame = SCAN_BSS_PROBE_RESP;
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if (ies && !scan_parse_bss_information_elements(bss, ies, ies_len))
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goto fail;
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/* Set data rate to something low, just in case estimation fails */
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bss->data_rate = 2000000;
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if (ies) {
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if (!scan_parse_bss_information_elements(bss, ies, ies_len))
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goto fail;
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L_WARN_ON(wiphy_estimate_data_rate(wiphy, ies, ies_len, bss,
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&bss->data_rate) < 0);
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}
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return bss;
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@ -1280,6 +1267,7 @@ static struct scan_freq_set *scan_parse_attr_scan_frequencies(
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}
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static struct scan_bss *scan_parse_result(struct l_genl_msg *msg,
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struct wiphy *wiphy,
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uint32_t *out_seen_ms_ago)
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{
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struct l_genl_attr attr, nested;
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@ -1295,7 +1283,8 @@ static struct scan_bss *scan_parse_result(struct l_genl_msg *msg,
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if (!l_genl_attr_recurse(&attr, &nested))
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return NULL;
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bss = scan_parse_attr_bss(&nested, out_seen_ms_ago);
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bss = scan_parse_attr_bss(&nested, wiphy,
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out_seen_ms_ago);
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break;
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}
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}
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@ -1309,27 +1298,12 @@ static void scan_bss_compute_rank(struct scan_bss *bss)
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static const double RANK_LOW_UTILIZATION_FACTOR = 1.2;
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double rank;
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uint32_t irank;
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uint64_t data_rate;
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/*
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* Maximum rate is 2340Mbps (VHT)
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*/
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uint64_t max_rate = 2340000000U;
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double max_rate = 2340000000;
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/*
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* If parsing fails choose a very low data rate as its unknown what
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* this AP supports or why its IEs did not parse. Likely not an AP
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* we should prefer to connect to.
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*/
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if (ie_parse_data_rates(bss->has_sup_rates ?
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bss->supp_rates_ie : NULL,
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bss->ext_supp_rates_ie,
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bss->ht_capable ? bss->ht_ie : NULL,
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bss->vht_capable ? bss->vht_ie : NULL,
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bss->signal_strength / 100,
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&data_rate) != 0)
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data_rate = 2000000;
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rank = (double)data_rate / (double)max_rate * USHRT_MAX;
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rank = (double)bss->data_rate / max_rate * USHRT_MAX;
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/* Prefer 5G networks over 2.4G */
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if (bss->frequency > 4000)
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@ -1367,7 +1341,6 @@ struct scan_bss *scan_bss_new_from_probe_req(const struct mmpdu_header *mpdu,
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if (!scan_parse_bss_information_elements(bss, body, body_len))
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goto fail;
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scan_bss_compute_rank(bss);
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return bss;
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fail:
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@ -1377,7 +1350,6 @@ fail:
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void scan_bss_free(struct scan_bss *bss)
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{
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l_free(bss->ext_supp_rates_ie);
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l_free(bss->rsne);
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l_free(bss->wpa);
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l_free(bss->wsc);
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@ -1474,7 +1446,7 @@ static void get_scan_callback(struct l_genl_msg *msg, void *user_data)
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return;
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}
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bss = scan_parse_result(msg, &seen_ms_ago);
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bss = scan_parse_result(msg, sc->wiphy, &seen_ms_ago);
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if (!bss)
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return;
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@ -64,14 +64,11 @@ struct scan_bss {
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uint8_t mde[3];
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uint8_t ssid[32];
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uint8_t ssid_len;
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uint8_t supp_rates_ie[10];
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uint8_t *ext_supp_rates_ie;
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uint8_t utilization;
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uint8_t cc[3];
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uint16_t rank;
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uint8_t ht_ie[28];
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uint8_t vht_ie[14];
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uint64_t time_stamp;
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uint64_t data_rate;
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uint8_t hessid[6];
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uint8_t *rc_ie; /* Roaming consortium IE */
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uint8_t hs20_version;
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@ -81,7 +78,6 @@ struct scan_bss {
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bool mde_present : 1;
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bool cc_present : 1;
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bool cap_rm_neighbor_report : 1;
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bool has_sup_rates : 1;
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bool ht_capable : 1;
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bool vht_capable : 1;
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bool anqp_capable : 1;
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