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hostapd: Work around an interop connection issue in FT-PSK + WPA-PSK

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While the AP is configured to enable both FT-PSK and WPA-PSK, an HP
printer request both AKMs (copied from AP?) in Association Request
frame, but don't add MDIE and don't use FT. This results in the
connection failing.

Next in logs we see:

RSN: Trying to use FT, but MDIE not included
IE - hexdump(len=26): 30 18 01 00 00 0f ac 04 01 00 00 0f ac 04
                      02 00 00 0f ac 02 00 0f ac 04 00 00

This is seen with some HP and Epson printers. Work around this by
stripping FT AKM(s) when MDE is not present and there is still a non-FT
AKM available.

Signed-off-by: Janusz Dziedzic <janusz@plumewifi.com>
This commit is contained in:
Janusz Dziedzic 2018-03-05 15:37:10 +01:00 • committed by Jouni Malinen
parent 2e71d0415b
commit bb35e2d214
2 changed files with 28 additions and 6 deletions
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21
src/common/defs.h
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@ -59,6 +59,13 @@ typedef enum { FALSE = 0, TRUE = 1 } Boolean;
#define WPA_KEY_MGMT_DPP BIT(23)
#define WPA_KEY_MGMT_FT_IEEE8021X_SHA384 BIT(24)
#define WPA_KEY_MGMT_FT (WPA_KEY_MGMT_FT_PSK | \
WPA_KEY_MGMT_FT_IEEE8021X | \
WPA_KEY_MGMT_FT_IEEE8021X_SHA384 | \
WPA_KEY_MGMT_FT_SAE | \
WPA_KEY_MGMT_FT_FILS_SHA256 | \
WPA_KEY_MGMT_FT_FILS_SHA384)
static inline int wpa_key_mgmt_wpa_ieee8021x(int akm)
{
return !!(akm & (WPA_KEY_MGMT_IEEE8021X |
@ -86,12 +93,14 @@ static inline int wpa_key_mgmt_wpa_psk(int akm)
static inline int wpa_key_mgmt_ft(int akm)
{
return !!(akm & (WPA_KEY_MGMT_FT_PSK |
WPA_KEY_MGMT_FT_IEEE8021X |
WPA_KEY_MGMT_FT_IEEE8021X_SHA384 |
WPA_KEY_MGMT_FT_SAE |
WPA_KEY_MGMT_FT_FILS_SHA256 |
WPA_KEY_MGMT_FT_FILS_SHA384));
return !!(akm & WPA_KEY_MGMT_FT);
}
static inline int wpa_key_mgmt_only_ft(int akm)
{
int ft = wpa_key_mgmt_ft(akm);
akm &= ~WPA_KEY_MGMT_FT;
return ft && !akm;
}
static inline int wpa_key_mgmt_ft_psk(int akm)