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authorAhmad Kholaif <akholaif@qca.qualcomm.com>2015-10-28 21:14:10 (GMT)
committerJouni Malinen <j@w1.fi>2015-11-25 17:01:14 (GMT)
commitbee5d8e067a743986c0a5c19b09dc61178436d27 (patch)
tree0bd81357f6df87855ffbc0e71791dcaed35d190f /wpa_supplicant/p2p_supplicant.c
parent5e1da9c8fdcadb0171d5448fa09960f976804155 (diff)
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nl80211: Add VHT 160 MHz channel flags
This extends the previous design that covered only the VHT 80 MHz cases for VHT channel flags. New functions are introduced to allow 160 MHz bandwidth cases to determine the center channel and check availability of a 160 MHz channel. Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Diffstat (limited to 'wpa_supplicant/p2p_supplicant.c')
-rw-r--r--wpa_supplicant/p2p_supplicant.c80
1 files changed, 80 insertions, 0 deletions
diff --git a/wpa_supplicant/p2p_supplicant.c b/wpa_supplicant/p2p_supplicant.c
index bf0336f..020a469 100644
--- a/wpa_supplicant/p2p_supplicant.c
+++ b/wpa_supplicant/p2p_supplicant.c
@@ -3417,6 +3417,75 @@ static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
}
+static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s,
+ struct hostapd_hw_modes *mode,
+ u8 channel)
+{
+ u8 center_channels[] = { 50, 114 };
+ unsigned int i;
+
+ if (mode->mode != HOSTAPD_MODE_IEEE80211A)
+ return 0;
+
+ for (i = 0; i < ARRAY_SIZE(center_channels); i++)
+ /*
+ * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64),
+ * so the center channel is 14 channels away from the start/end.
+ */
+ if (channel >= center_channels[i] - 14 &&
+ channel <= center_channels[i] + 14)
+ return center_channels[i];
+
+ return 0;
+}
+
+
+static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s,
+ struct hostapd_hw_modes *mode,
+ u8 channel, u8 bw)
+{
+ u8 center_chan;
+ int i, flags;
+ enum chan_allowed res, ret = ALLOWED;
+
+ center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
+ if (!center_chan)
+ return NOT_ALLOWED;
+ /* VHT 160 MHz uses DFS channels in most countries. */
+
+ /* Check all the channels are available */
+ for (i = 0; i < 8; i++) {
+ int adj_chan = center_chan - 14 + i * 4;
+
+ res = has_channel(wpa_s->global, mode, adj_chan, &flags);
+ if (res == NOT_ALLOWED)
+ return NOT_ALLOWED;
+
+ if (res == NO_IR)
+ ret = NO_IR;
+
+ if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150))
+ return NOT_ALLOWED;
+ if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130))
+ return NOT_ALLOWED;
+ if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110))
+ return NOT_ALLOWED;
+ if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90))
+ return NOT_ALLOWED;
+ if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70))
+ return NOT_ALLOWED;
+ if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50))
+ return NOT_ALLOWED;
+ if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30))
+ return NOT_ALLOWED;
+ if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10))
+ return NOT_ALLOWED;
+ }
+
+ return ret;
+}
+
+
static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
struct hostapd_hw_modes *mode,
u8 channel, u8 bw)
@@ -3435,6 +3504,8 @@ static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
} else if (bw == BW80) {
res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
+ } else if (bw == BW160) {
+ res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw);
}
if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
@@ -3548,6 +3619,15 @@ int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
}
+int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s,
+ struct hostapd_hw_modes *mode, u8 channel)
+{
+ if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160))
+ return 0;
+ return wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
+}
+
+
static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
size_t buf_len)
{