diff --git a/wpa_supplicant/p2p_supplicant.c b/wpa_supplicant/p2p_supplicant.c index 92b6e6085..46352c781 100644 --- a/wpa_supplicant/p2p_supplicant.c +++ b/wpa_supplicant/p2p_supplicant.c @@ -5800,6 +5800,19 @@ out: } +static int wpas_same_band(int freq1, int freq2) +{ + enum hostapd_hw_mode mode1, mode2; + u8 chan1, chan2; + + mode1 = ieee80211_freq_to_chan(freq1, &chan1); + mode2 = ieee80211_freq_to_chan(freq2, &chan2); + if (mode1 == NUM_HOSTAPD_MODES) + return 0; + return mode1 == mode2; +} + + static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s, struct p2p_go_neg_results *params, int freq, int vht_center_freq2, int ht40, @@ -6000,6 +6013,80 @@ static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s, goto success; } + /* Try using a channel that allows VHT to be used with 80 MHz */ + if (wpa_s->hw.modes && wpa_s->p2p_group_common_freqs) { + for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { + enum hostapd_hw_mode mode; + struct hostapd_hw_modes *hwmode; + u8 chan; + + cand = wpa_s->p2p_group_common_freqs[i]; + mode = ieee80211_freq_to_chan(cand, &chan); + hwmode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, + mode); + if (!hwmode || + wpas_p2p_verify_channel(wpa_s, hwmode, chan, + BW80) != ALLOWED) + continue; + if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { + params->freq = cand; + wpa_printf(MSG_DEBUG, + "P2P: Use freq %d MHz common with the peer and allowing VHT80", + params->freq); + goto success; + } + } + } + + /* Try using a channel that allows HT to be used with 40 MHz on the same + * band so that CSA can be used */ + if (wpa_s->current_ssid && wpa_s->hw.modes && + wpa_s->p2p_group_common_freqs) { + for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { + enum hostapd_hw_mode mode; + struct hostapd_hw_modes *hwmode; + u8 chan; + + cand = wpa_s->p2p_group_common_freqs[i]; + mode = ieee80211_freq_to_chan(cand, &chan); + hwmode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, + mode); + if (!wpas_same_band(wpa_s->current_ssid->frequency, + cand) || + !hwmode || + (wpas_p2p_verify_channel(wpa_s, hwmode, chan, + BW40MINUS) != ALLOWED && + wpas_p2p_verify_channel(wpa_s, hwmode, chan, + BW40PLUS) != ALLOWED)) + continue; + if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { + params->freq = cand; + wpa_printf(MSG_DEBUG, + "P2P: Use freq %d MHz common with the peer, allowing HT40, and maintaining same band", + params->freq); + goto success; + } + } + } + + /* Try using one of the group common freqs on the same band so that CSA + * can be used */ + if (wpa_s->current_ssid && wpa_s->p2p_group_common_freqs) { + for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { + cand = wpa_s->p2p_group_common_freqs[i]; + if (!wpas_same_band(wpa_s->current_ssid->frequency, + cand)) + continue; + if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { + params->freq = cand; + wpa_printf(MSG_DEBUG, + "P2P: Use freq %d MHz common with the peer and maintaining same band", + params->freq); + goto success; + } + } + } + /* Try using one of the group common freqs */ if (wpa_s->p2p_group_common_freqs) { for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {