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DPP: PKEX initiation on other bands
Add support for wpa_supplicant to try to initiate PKEX on 5 GHz and 60 GHz bands in addition to the previously available 2.4 GHz case. If no response from a peer device is seen on the 2.4 GHz band (channel 6) for the five attempts, try the other PKEX channels (5 GHz channels 44 and 149; and 60 GHz channel 2) if they are supported and allowed for initiating radiation. Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
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@ -1,6 +1,7 @@
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/*
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* wpa_supplicant - DPP
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* Copyright (c) 2017, Qualcomm Atheros, Inc.
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* Copyright (c) 2018, The Linux Foundation
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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@ -1654,6 +1655,62 @@ fail:
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}
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static int wpas_dpp_allow_ir(struct wpa_supplicant *wpa_s, unsigned int freq)
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{
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int i, j;
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if (!wpa_s->hw.modes)
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return -1;
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for (i = 0; i < wpa_s->hw.num_modes; i++) {
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struct hostapd_hw_modes *mode = &wpa_s->hw.modes[i];
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for (j = 0; j < mode->num_channels; j++) {
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struct hostapd_channel_data *chan = &mode->channels[j];
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if (chan->freq != (int) freq)
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continue;
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if (chan->flag & (HOSTAPD_CHAN_DISABLED |
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HOSTAPD_CHAN_NO_IR |
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HOSTAPD_CHAN_RADAR))
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continue;
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return 1;
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}
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}
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wpa_printf(MSG_DEBUG,
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"DPP: Frequency %u MHz not supported or does not allow PKEX initiation in the current channel list",
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freq);
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return 0;
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}
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static int wpas_dpp_pkex_next_channel(struct wpa_supplicant *wpa_s,
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struct dpp_pkex *pkex)
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{
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if (pkex->freq == 2437)
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pkex->freq = 5745;
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else if (pkex->freq == 5745)
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pkex->freq = 5220;
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else if (pkex->freq == 5220)
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pkex->freq = 60480;
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else
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return -1; /* no more channels to try */
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if (wpas_dpp_allow_ir(wpa_s, pkex->freq) == 1) {
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wpa_printf(MSG_DEBUG, "DPP: Try to initiate on %u MHz",
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pkex->freq);
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return 0;
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}
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/* Could not use this channel - try the next one */
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return wpas_dpp_pkex_next_channel(wpa_s, pkex);
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}
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static void wpas_dpp_pkex_retry_timeout(void *eloop_ctx, void *timeout_ctx)
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{
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struct wpa_supplicant *wpa_s = eloop_ctx;
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@ -1662,11 +1719,14 @@ static void wpas_dpp_pkex_retry_timeout(void *eloop_ctx, void *timeout_ctx)
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if (!pkex || !pkex->exchange_req)
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return;
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if (pkex->exch_req_tries >= 5) {
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wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_FAIL
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"No response from PKEX peer");
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dpp_pkex_free(pkex);
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wpa_s->dpp_pkex = NULL;
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return;
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if (wpas_dpp_pkex_next_channel(wpa_s, pkex) < 0) {
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wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_FAIL
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"No response from PKEX peer");
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dpp_pkex_free(pkex);
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wpa_s->dpp_pkex = NULL;
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return;
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}
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pkex->exch_req_tries = 0;
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}
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pkex->exch_req_tries++;
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@ -2400,7 +2460,6 @@ int wpas_dpp_pkex_add(struct wpa_supplicant *wpa_s, const char *cmd)
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wait_time = wpa_s->max_remain_on_chan;
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if (wait_time > 2000)
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wait_time = 2000;
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/* TODO: Support for 5 GHz channels */
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pkex->freq = 2437;
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wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR
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" freq=%u type=%d",
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