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wiphy: add driver quirk for the colocated scan flag

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Some drivers do not handle the colocated scan flag very well and this
results in BSS's not being seen in scans. This of course results in
very poor behavior.

This has been seen on ath11k specifically but after some
conversations [1] on the linux-wireless mailing list others have
reported issues with iwlwifi acting similarly. Since there are many
hardware variants that use both ath11k and iwlwifi this new quirk
isn't being forced to those drivers, but let users configure IWD to
disable the flag if needed.

[1] https://lore.kernel.org/linux-wireless/d1e75a08-047d-7947-d51a-2e486efead77@candelatech.com/
This commit is contained in:
James Prestwood 2025-08-22 12:51:04 -07:00 committed by Denis Kenzior
parent 77ee863f04
commit 161de4a3ad
2 changed files with 18 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
src/wiphy.c
View File

@ -75,6 +75,8 @@ enum driver_flag {
OWE_DISABLE = 0x8,
MULTICAST_RX_DISABLE = 0x10,
SAE_DISABLE = 0x20,
/* Disables use of the NL80211_SCAN_FLAG_COLOCATED_6GHZ flag in scans */
COLOCATED_SCAN_DISABLE = 0x40,
};
struct driver_flag_name {
@ -103,12 +105,13 @@ static const struct driver_info driver_infos[] = {
};
static const struct driver_flag_name driver_flag_names[] = {
{ "DefaultInterface", DEFAULT_IF },
{ "ForcePae", FORCE_PAE },
{ "PowerSaveDisable", POWER_SAVE_DISABLE },
{ "OweDisable", OWE_DISABLE },
{ "MulticastRxDisable", MULTICAST_RX_DISABLE },
{ "SaeDisable", SAE_DISABLE },
{ "DefaultInterface", DEFAULT_IF },
{ "ForcePae", FORCE_PAE },
{ "PowerSaveDisable", POWER_SAVE_DISABLE },
{ "OweDisable", OWE_DISABLE },
{ "MulticastRxDisable", MULTICAST_RX_DISABLE },
{ "SaeDisable", SAE_DISABLE },
{ "ColocatedScanDisable", COLOCATED_SCAN_DISABLE },
};
struct wiphy {
@ -963,6 +966,11 @@ bool wiphy_supports_multicast_rx(const struct wiphy *wiphy)
!(wiphy->driver_flags & MULTICAST_RX_DISABLE);
}
bool wiphy_supports_colocated_flag(const struct wiphy *wiphy)
{
return !(wiphy->driver_flags & COLOCATED_SCAN_DISABLE);
}
const uint8_t *wiphy_get_ht_capabilities(const struct wiphy *wiphy,
enum band_freq band,
size_t *size)
@ -1382,6 +1390,9 @@ static void wiphy_print_basic_info(struct wiphy *wiphy)
if (wiphy->driver_flags & SAE_DISABLE)
flags = l_strv_append(flags, "SaeDisable");
if (wiphy->driver_flags & COLOCATED_SCAN_DISABLE)
flags = l_strv_append(flags, "ColocatedScanDisable");
joined = l_strjoinv(flags, ' ');
l_info("\tDriver Flags: %s", joined);

1
src/wiphy.h
View File

@ -144,6 +144,7 @@ bool wiphy_country_is_unknown(struct wiphy *wiphy);
bool wiphy_supports_uapsd(const struct wiphy *wiphy);
bool wiphy_supports_cmd_offchannel(const struct wiphy *wiphy);
bool wiphy_supports_multicast_rx(const struct wiphy *wiphy);
bool wiphy_supports_colocated_flag(const struct wiphy *wiphy);
const uint8_t *wiphy_get_ht_capabilities(const struct wiphy *wiphy,
enum band_freq band,