WiFi 6E (802.11ax) clients cannot discover 6GHz APs operating at
320MHz because the HE Operation element contains uninitialized
center frequency values.
For EHT320 mode, the code sets eht_oper_centr_freq_seg0_idx but not
the corresponding HE values. Later, the HE values are copied from
VHT values, but VHT is not used on 6GHz, leaving he_oper_chwidth
and he_oper_centr_freq_seg0_idx at 0. This causes WiFi 6E clients
to see incorrect channel width information, making the AP invisible
to them during scanning.
Fix this by:
1. Setting he_oper_chwidth to 3 (160MHz) for EHT320 mode
2. Computing he_oper_centr_freq_seg0_idx based on the 160MHz segment
that contains the primary channel
3. Preserving these pre-set values instead of overwriting them with
uninitialized VHT values
WiFi 7 clients continue to see 320MHz operation via the EHT Operation
element, while WiFi 6E clients can now discover and connect at 160MHz.
Signed-off-by: Ryan Chen <rchen14b@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/21588
Signed-off-by: Robert Marko <robimarko@gmail.com>
(cherry picked from commit
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