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station: disable OCV if offloading is supported

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It was seen during testing that several offload-capable cards
were not including the OCI in the 4-way handshake. This made
any OCV capable AP unconnectable.

To be safe disable OCV on any cards that support offloading.
This commit is contained in:
James Prestwood 2021-10-19 14:52:47 -07:00 committed by Denis Kenzior
parent 747cb00c31
commit 42ab82c20c
1 changed files with 14 additions and 1 deletions
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15
src/station.c
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@ -1085,7 +1085,20 @@ build_ie:
&disable_ocv))
disable_ocv = false;
info.ocvc = !disable_ocv && bss_info.ocvc && info.mfpc;
/*
* Obviously do not enable OCV if explicitly disabled or no AP support.
*
* Not obviously hostapd rejects OCV support if MFPC is not enabled.
* This is not really specified by the spec, but we have to work around
* this limitation.
*
* Another limitation is full mac cards. With limited testing it was
* seen that they do not include the OCI in the 4-way handshake yet
* still advertise the capability. Because of this OCV is disabled if
* any offload features are detected (since IWD prefers to use offload).
*/
info.ocvc = !disable_ocv && bss_info.ocvc && info.mfpc &&
!wiphy_can_offload(wiphy);;
/*
* IEEE 802.11-2020 9.4.2.24.4 states extended key IDs can only be used