Instead of copy-pasting the same basic operation (memcpy & assignment),
use a goto and a common path instead. This should also make it easier
for the compiler to optimize this function.
- Mostly problems with whitespace:
- Use of spaces instead of tabs
- Stray spaces before closing ')
- Missing spaces
- Missing 'void' from function declarations & definitions that
take no arguments.
- Wrong indentation level
This changes scan_bss from using separate members for each
OWE transition element data type (ssid, ssid_len, and bssid)
to a structure that holds them all.
This is being done because OWE transition has option operating
class and channel bytes which will soon be parsed. This would
end up needing 5 separate members in scan_bss which is a bit
much for a single IE that needs to be parsed.
This makes checking the presense of the IE more convenient
as well since it can be done with a simple NULL pointer check
rather than having to l_memeqzero the BSSID.
This is a parser for the WFA OWE Transition element. For now the
optional band/channel bytes will not be parsed as hostapd does not
yet support these and would also require the 802.11 appendix E-1
to be added to IWD. Because of this OWE Transition networks are
assumed to be on the same channel as their open counterpart.
ie_tlv_builder_init takes a size_t as input, yet for some reason
ie_tlv_builder_finalize takes an unsigned int argument as output. Fix
the latter to use size_t as well.
Code that walked the VHT TX/RX MCS maps seemed to assume that bit_field
operated on bits that start at '1'. But this utility actually operates
on bits that start at '0'. I.e. the least significant bit is at
position 0.
While we're at it, rename the mcs variable into bitoffset to make it
clearer how the maps are being iterated over. Supported MCS is actually
the value found in the map.
The current calculation was giving erroneous results when it came to VHT
MCS index 4 and VHT MCS index 8 & 9.
Switch to a precomputed look up table and add a multiplication factor
for short GI.
Both ext/supported rates IEs are obtained from scan results. These
IEs are passed to ie_tlv_init/ie_tlv_next, as well as direct length
checks (for supported rates at least, extended supported rates can
be as long as a single byte integer can hold, 1 - 255) which verifies
that the length in the IE matches the overall IE length that is
stored in scan_bss. Because of this, ie_parse_supported_rates_from_data
was doing double duty re-initializing a TLV iterator.
Intead, since we know the IE length is within bounds, the length/data
can simply be directly accessed out of the buffer. This avoids the need
for a wrapper function entirely.
The length parameters were also removed, since this is now obtained
directly from the IE.
Fix a logic error which prevented iwd from using SAE/WPA3 when
attempting to connect to APs that are in transition mode. The SAE/WPA3
check incorrectly required mfpr bit to be set, which is true for
APs in WPA3-Personal only mode, but is set to 0 for APs in
WPA3-Personal transition mode.
This patch also adds a bit more diagnostic output to help diagnose
causes for connections where WPA3 is not attempted even when advertised
by the AP.
The parser fully parses the IE and returns the version, Domain ID,
and PPS MO ID. This is meant to be used with an IE in scan results.
The builder only takes the version number, and assumes DGAF disabled,
and no Domain ID or PPS MO ID.
In the same fashion as the WSC WFA OUI, ie.[ch] will now expose the
other vendor OUIs to avoid duplication across multiple files in IWD
as well as used in iwmon.
The length check was incorrectly assuming that PPS MO ID or
ANQP Domain ID would be present in the IE. Both these are optional
and without then the minimum length is 5 bytes, not 7.
Parses up to 3 (the max) roaming consortium OIs out of the roaming
consortium IE. If more OIs are available via ANQP the 'num_anqp_out'
value will be set to indicate how many more OIs are available.
Builds according to the hotspot 2.0 spec using the vendor specific
IE.
The OSEN AKM is nearly identical to the RSN IE, but differs slightly.
For one, OSEN is encapsulated into the vendor specific IE, and includes
the WFA OUI before the 'normal' RSN elements. OSEN also does not include
a WPA version, since its not technically WPA/WPA2.
Some of the RSN parsing was made common so both RSN/OSEN parsing could
use it.
