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wpa_supplicant: Pass in operating class for channel validity checks

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This is needed to allow the 6 GHz operating classes to be compared
against the driver support channels since the channel numbers are not
really unique identifiers of a channel even within a single band.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This commit is contained in:
Jouni Malinen 2019-10-09 18:49:42 +03:00 committed by Jouni Malinen
parent 3fa701b5ce
commit 89450024a8
3 changed files with 51 additions and 29 deletions
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73
wpa_supplicant/op_classes.c
View file

@ -16,13 +16,19 @@
#include "wpa_supplicant_i.h"
static enum chan_allowed allow_channel(struct hostapd_hw_modes *mode, u8 chan,
static enum chan_allowed allow_channel(struct hostapd_hw_modes *mode,
u8 op_class, u8 chan,
unsigned int *flags)
{
int i;
int is_6ghz = op_class >= 131 && op_class <= 135;
for (i = 0; i < mode->num_channels; i++) {
if (mode->channels[i].chan == chan)
int chan_is_6ghz;
chan_is_6ghz = mode->channels[i].freq > 5940 &&
mode->channels[i].freq <= 7105;
if (is_6ghz == chan_is_6ghz && mode->channels[i].chan == chan)
break;
}
@ -62,7 +68,8 @@ static int get_center_80mhz(struct hostapd_hw_modes *mode, u8 channel)
}
static enum chan_allowed verify_80mhz(struct hostapd_hw_modes *mode, u8 channel)
static enum chan_allowed verify_80mhz(struct hostapd_hw_modes *mode,
u8 op_class, u8 channel)
{
u8 center_chan;
unsigned int i;
@ -77,7 +84,8 @@ static enum chan_allowed verify_80mhz(struct hostapd_hw_modes *mode, u8 channel)
unsigned int flags;
u8 adj_chan = center_chan - 6 + i * 4;
if (allow_channel(mode, adj_chan, &flags) == NOT_ALLOWED)
if (allow_channel(mode, op_class, adj_chan, &flags) ==
NOT_ALLOWED)
return NOT_ALLOWED;
if ((i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70)) ||
@ -120,7 +128,7 @@ static int get_center_160mhz(struct hostapd_hw_modes *mode, u8 channel)
static enum chan_allowed verify_160mhz(struct hostapd_hw_modes *mode,
u8 channel)
u8 op_class, u8 channel)
{
u8 center_chan;
unsigned int i;
@ -135,7 +143,8 @@ static enum chan_allowed verify_160mhz(struct hostapd_hw_modes *mode,
unsigned int flags;
u8 adj_chan = center_chan - 14 + i * 4;
if (allow_channel(mode, adj_chan, &flags) == NOT_ALLOWED)
if (allow_channel(mode, op_class, adj_chan, &flags) ==
NOT_ALLOWED)
return NOT_ALLOWED;
if ((i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150)) ||
@ -159,42 +168,42 @@ static enum chan_allowed verify_160mhz(struct hostapd_hw_modes *mode,
}
enum chan_allowed verify_channel(struct hostapd_hw_modes *mode, u8 channel,
u8 bw)
enum chan_allowed verify_channel(struct hostapd_hw_modes *mode, u8 op_class,
u8 channel, u8 bw)
{
unsigned int flag = 0;
enum chan_allowed res, res2;
res2 = res = allow_channel(mode, channel, &flag);
res2 = res = allow_channel(mode, op_class, channel, &flag);
if (bw == BW40MINUS) {
if (!(flag & HOSTAPD_CHAN_HT40MINUS))
return NOT_ALLOWED;
res2 = allow_channel(mode, channel - 4, NULL);
res2 = allow_channel(mode, op_class, channel - 4, NULL);
} else if (bw == BW40PLUS) {
if (!(flag & HOSTAPD_CHAN_HT40PLUS))
return NOT_ALLOWED;
res2 = allow_channel(mode, channel + 4, NULL);
res2 = allow_channel(mode, op_class, channel + 4, NULL);
} else if (bw == BW80) {
/*
* channel is a center channel and as such, not necessarily a
* valid 20 MHz channels. Override earlier allow_channel()
* result and use only the 80 MHz specific version.
*/
res2 = res = verify_80mhz(mode, channel);
res2 = res = verify_80mhz(mode, op_class, channel);
} else if (bw == BW160) {
/*
* channel is a center channel and as such, not necessarily a
* valid 20 MHz channels. Override earlier allow_channel()
* result and use only the 160 MHz specific version.
*/
res2 = res = verify_160mhz(mode, channel);
res2 = res = verify_160mhz(mode, op_class, channel);
} else if (bw == BW80P80) {
/*
* channel is a center channel and as such, not necessarily a
* valid 20 MHz channels. Override earlier allow_channel()
* result and use only the 80 MHz specific version.
*/
res2 = res = verify_80mhz(mode, channel);
res2 = res = verify_80mhz(mode, op_class, channel);
}
if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
@ -284,7 +293,8 @@ static int wpas_op_class_supported(struct wpa_supplicant *wpa_s,
u8 channels[] = { 42, 58, 106, 122, 138, 155 };
for (i = 0; i < ARRAY_SIZE(channels); i++) {
if (verify_channel(mode, channels[i], op_class->bw) !=
if (verify_channel(mode, op_class->op_class,
channels[i], op_class->bw) !=
NOT_ALLOWED)
return 1;
}
@ -294,25 +304,35 @@ static int wpas_op_class_supported(struct wpa_supplicant *wpa_s,
if (op_class->op_class == 129) {
/* Check if either 160 MHz channels is allowed */
return verify_channel(mode, 50, op_class->bw) != NOT_ALLOWED ||
verify_channel(mode, 114, op_class->bw) != NOT_ALLOWED;
return verify_channel(mode, op_class->op_class, 50,
op_class->bw) != NOT_ALLOWED ||
verify_channel(mode, op_class->op_class, 114,
op_class->bw) != NOT_ALLOWED;
}
if (op_class->op_class == 130) {
/* Need at least two non-contiguous 80 MHz segments */
found = 0;
if (verify_channel(mode, 42, op_class->bw) != NOT_ALLOWED ||
verify_channel(mode, 58, op_class->bw) != NOT_ALLOWED)
if (verify_channel(mode, op_class->op_class, 42,
op_class->bw) != NOT_ALLOWED ||
verify_channel(mode, op_class->op_class, 58,
op_class->bw) != NOT_ALLOWED)
found++;
if (verify_channel(mode, 106, op_class->bw) != NOT_ALLOWED ||
verify_channel(mode, 122, op_class->bw) != NOT_ALLOWED ||
verify_channel(mode, 138, op_class->bw) != NOT_ALLOWED)
if (verify_channel(mode, op_class->op_class, 106,
op_class->bw) != NOT_ALLOWED ||
verify_channel(mode, op_class->op_class, 122,
op_class->bw) != NOT_ALLOWED ||
verify_channel(mode, op_class->op_class, 138,
op_class->bw) != NOT_ALLOWED)
found++;
if (verify_channel(mode, 106, op_class->bw) != NOT_ALLOWED &&
verify_channel(mode, 138, op_class->bw) != NOT_ALLOWED)
if (verify_channel(mode, op_class->op_class, 106,
op_class->bw) != NOT_ALLOWED &&
verify_channel(mode, op_class->op_class, 138,
op_class->bw) != NOT_ALLOWED)
found++;
if (verify_channel(mode, 155, op_class->bw) != NOT_ALLOWED)
if (verify_channel(mode, op_class->op_class, 155,
op_class->bw) != NOT_ALLOWED)
found++;
if (found >= 2)
@ -324,7 +344,8 @@ static int wpas_op_class_supported(struct wpa_supplicant *wpa_s,
found = 0;
for (chan = op_class->min_chan; chan <= op_class->max_chan;
chan += op_class->inc) {
if (verify_channel(mode, chan, op_class->bw) != NOT_ALLOWED) {
if (verify_channel(mode, op_class->op_class, chan,
op_class->bw) != NOT_ALLOWED) {
found = 1;
break;
}

3
wpa_supplicant/rrm.c
View file

@ -528,7 +528,8 @@ static int * wpas_add_channels(const struct oper_class_map *op,
next_freq = freqs;
for (i = 0; i < num_chans; i++) {
u8 chan = channels ? channels[i] : op->min_chan + i * op->inc;
enum chan_allowed res = verify_channel(mode, chan, op->bw);
enum chan_allowed res = verify_channel(mode, op->op_class, chan,
op->bw);
if (res == NOT_ALLOWED || (res == NO_IR && active))
continue;

4
wpa_supplicant/wpa_supplicant_i.h
View file

@ -1423,8 +1423,8 @@ enum chan_allowed {
NOT_ALLOWED, NO_IR, ALLOWED
};
enum chan_allowed verify_channel(struct hostapd_hw_modes *mode, u8 channel,
u8 bw);
enum chan_allowed verify_channel(struct hostapd_hw_modes *mode, u8 op_class,
u8 channel, u8 bw);
size_t wpas_supp_op_class_ie(struct wpa_supplicant *wpa_s,
struct wpa_ssid *ssid,
int freq, u8 *pos, size_t len);