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netdev: fix RoamThreshold5G
The RoamThreshold5G was never honored because it was being set prior to any connections. This caused the logic inside netdev_cqm_rssi_update to always choose the 2GHz threshold (RoamThreshold) due to netdev->frequency being zero at this time. Instead call netdev_cqm_rssi_update in all connect/transition calls after netdev->frequency is updated. This will allow both the 2G and 5G thresholds to be used depending on what frequency the new BSS is. The call to netdev_cqm_rssi_update in netdev_setup_interface was also removed since it serves no purpose, at least now that there are two thresholds to consider.
This commit is contained in:
James Prestwood
Denis Kenzior
parent
30d32e4a58
commit
befa448017
192
src/netdev.c
192
src/netdev.c
@ -3161,6 +3161,100 @@ static int netdev_start_powered_mac_change(struct netdev *netdev)
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return 0;
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}
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static struct l_genl_msg *netdev_build_cmd_cqm_rssi_update(
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struct netdev *netdev,
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const int8_t *levels,
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size_t levels_num)
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{
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struct l_genl_msg *msg;
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uint32_t hyst = 5;
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int thold_count;
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int32_t thold_list[levels_num + 2];
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int threshold = netdev->frequency > 4000 ? LOW_SIGNAL_THRESHOLD_5GHZ :
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LOW_SIGNAL_THRESHOLD;
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if (levels_num == 0) {
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thold_list[0] = threshold;
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thold_count = 1;
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} else {
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/*
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* Build the list of all the threshold values we care about:
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* - the low/high level threshold,
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* - the value ranges requested by
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* netdev_set_rssi_report_levels
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*/
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unsigned int i;
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bool low_sig_added = false;
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thold_count = 0;
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for (i = 0; i < levels_num; i++) {
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int32_t val = levels[levels_num - i - 1];
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if (i && thold_list[thold_count - 1] >= val)
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return NULL;
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if (val >= threshold && !low_sig_added) {
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thold_list[thold_count++] = threshold;
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low_sig_added = true;
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/* Duplicate values are not allowed */
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if (val == threshold)
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continue;
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}
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thold_list[thold_count++] = val;
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}
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}
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msg = l_genl_msg_new_sized(NL80211_CMD_SET_CQM, 32 + thold_count * 4);
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l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
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l_genl_msg_enter_nested(msg, NL80211_ATTR_CQM);
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l_genl_msg_append_attr(msg, NL80211_ATTR_CQM_RSSI_THOLD,
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thold_count * 4, thold_list);
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l_genl_msg_append_attr(msg, NL80211_ATTR_CQM_RSSI_HYST, 4, &hyst);
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l_genl_msg_leave_nested(msg);
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return msg;
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}
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static void netdev_cmd_set_cqm_cb(struct l_genl_msg *msg, void *user_data)
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{
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int err = l_genl_msg_get_error(msg);
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const char *ext_error;
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if (err >= 0)
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return;
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ext_error = l_genl_msg_get_extended_error(msg);
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l_error("CMD_SET_CQM failed: %s",
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ext_error ? ext_error : strerror(-err));
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}
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static int netdev_cqm_rssi_update(struct netdev *netdev)
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{
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struct l_genl_msg *msg;
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l_debug("");
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if (!wiphy_has_ext_feature(netdev->wiphy,
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NL80211_EXT_FEATURE_CQM_RSSI_LIST))
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msg = netdev_build_cmd_cqm_rssi_update(netdev, NULL, 0);
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else
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msg = netdev_build_cmd_cqm_rssi_update(netdev,
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netdev->rssi_levels,
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netdev->rssi_levels_num);
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if (!msg)
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return -EINVAL;
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if (!l_genl_family_send(nl80211, msg, netdev_cmd_set_cqm_cb,
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NULL, NULL)) {
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l_genl_msg_unref(msg);
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return -EIO;
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}
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return 0;
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}
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static bool netdev_connection_work_ready(struct wiphy_radio_work_item *item)
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{
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struct netdev *netdev = l_container_of(item, struct netdev, work);
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@ -3309,6 +3403,7 @@ static int netdev_connect_common(struct netdev *netdev,
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netdev->frequency = bss->frequency;
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netdev->cur_rssi = bss->signal_strength / 100;
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netdev_rssi_level_init(netdev);
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netdev_cqm_rssi_update(netdev);
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handshake_state_set_authenticator_address(hs, bss->addr);
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@ -3804,6 +3899,7 @@ static void prepare_ft(struct netdev *netdev, struct scan_bss *target_bss)
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}
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netdev_rssi_polling_update(netdev);
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netdev_cqm_rssi_update(netdev);
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if (netdev->sm) {
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eapol_sm_free(netdev->sm);
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@ -4904,75 +5000,6 @@ static void netdev_unicast_notify(struct l_genl_msg *msg, void *user_data)
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}
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}
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static struct l_genl_msg *netdev_build_cmd_cqm_rssi_update(
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struct netdev *netdev,
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const int8_t *levels,
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size_t levels_num)
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{
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struct l_genl_msg *msg;
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uint32_t hyst = 5;
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int thold_count;
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int32_t thold_list[levels_num + 2];
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int threshold = netdev->frequency > 4000 ? LOW_SIGNAL_THRESHOLD_5GHZ :
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LOW_SIGNAL_THRESHOLD;
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if (levels_num == 0) {
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thold_list[0] = threshold;
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thold_count = 1;
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} else {
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/*
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* Build the list of all the threshold values we care about:
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* - the low/high level threshold,
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* - the value ranges requested by
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* netdev_set_rssi_report_levels
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*/
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unsigned int i;
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bool low_sig_added = false;
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thold_count = 0;
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for (i = 0; i < levels_num; i++) {
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int32_t val = levels[levels_num - i - 1];
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if (i && thold_list[thold_count - 1] >= val)
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return NULL;
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if (val >= threshold && !low_sig_added) {
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thold_list[thold_count++] = threshold;
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low_sig_added = true;
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/* Duplicate values are not allowed */
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if (val == threshold)
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continue;
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}
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thold_list[thold_count++] = val;
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}
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}
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msg = l_genl_msg_new_sized(NL80211_CMD_SET_CQM, 32 + thold_count * 4);
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l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
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l_genl_msg_enter_nested(msg, NL80211_ATTR_CQM);
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l_genl_msg_append_attr(msg, NL80211_ATTR_CQM_RSSI_THOLD,
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thold_count * 4, thold_list);
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l_genl_msg_append_attr(msg, NL80211_ATTR_CQM_RSSI_HYST, 4, &hyst);
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l_genl_msg_leave_nested(msg);
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return msg;
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}
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static void netdev_cmd_set_cqm_cb(struct l_genl_msg *msg, void *user_data)
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{
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int err = l_genl_msg_get_error(msg);
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const char *ext_error;
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if (err >= 0)
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return;
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ext_error = l_genl_msg_get_extended_error(msg);
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l_error("CMD_SET_CQM failed: %s",
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ext_error ? ext_error : strerror(-err));
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}
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int netdev_set_rssi_report_levels(struct netdev *netdev, const int8_t *levels,
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size_t levels_num)
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{
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@ -5131,31 +5158,6 @@ int netdev_get_all_stations(struct netdev *netdev, netdev_get_station_cb_t cb,
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return 0;
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}
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static int netdev_cqm_rssi_update(struct netdev *netdev)
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{
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struct l_genl_msg *msg;
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l_debug("");
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if (!wiphy_has_ext_feature(netdev->wiphy,
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NL80211_EXT_FEATURE_CQM_RSSI_LIST))
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msg = netdev_build_cmd_cqm_rssi_update(netdev, NULL, 0);
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else
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msg = netdev_build_cmd_cqm_rssi_update(netdev,
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netdev->rssi_levels,
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netdev->rssi_levels_num);
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if (!msg)
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return -EINVAL;
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if (!l_genl_family_send(nl80211, msg, netdev_cmd_set_cqm_cb,
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NULL, NULL)) {
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l_genl_msg_unref(msg);
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return -EIO;
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}
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return 0;
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}
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static void netdev_add_station_frame_watches(struct netdev *netdev)
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{
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static const uint8_t action_neighbor_report_prefix[2] = { 0x05, 0x05 };
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@ -5192,8 +5194,6 @@ static void netdev_setup_interface(struct netdev *netdev)
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{
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switch (netdev->type) {
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case NL80211_IFTYPE_STATION:
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/* Set RSSI threshold for CQM notifications */
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netdev_cqm_rssi_update(netdev);
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netdev_add_station_frame_watches(netdev);
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break;
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default:
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