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Add helper functions for parsing RSNXE capabilities

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Simplify the implementation by using shared functions for parsing the
capabilities instead of using various similar but not exactly identical
checks throughout the implementation.

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2021-04-10 12:43:38 +03:00
parent 663e190b72
commit d675d3b15b
11 changed files with 75 additions and 55 deletions
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8
src/rsn_supp/wpa.c
View file

@ -609,8 +609,8 @@ static int wpa_derive_ptk(struct wpa_sm *sm, const unsigned char *src_addr,
#endif /* CONFIG_OWE */
if (sm->force_kdk_derivation ||
(sm->secure_ltf && sm->ap_rsnxe && sm->ap_rsnxe_len >= 4 &&
sm->ap_rsnxe[3] & BIT(WLAN_RSNX_CAPAB_SECURE_LTF - 8)))
(sm->secure_ltf &&
ieee802_11_rsnx_capab(sm->ap_rsnxe, WLAN_RSNX_CAPAB_SECURE_LTF)))
kdk_len = WPA_KDK_MAX_LEN;
else
kdk_len = 0;
@ -4376,8 +4376,8 @@ int fils_process_auth(struct wpa_sm *sm, const u8 *bssid, const u8 *data,
}
if (sm->force_kdk_derivation ||
(sm->secure_ltf && sm->ap_rsnxe && sm->ap_rsnxe_len >= 4 &&
sm->ap_rsnxe[3] & BIT(WLAN_RSNX_CAPAB_SECURE_LTF - 8)))
(sm->secure_ltf &&
ieee802_11_rsnx_capab(sm->ap_rsnxe, WLAN_RSNX_CAPAB_SECURE_LTF)))
kdk_len = WPA_KDK_MAX_LEN;
else
kdk_len = 0;

8
src/rsn_supp/wpa_ft.c
View file

@ -69,8 +69,8 @@ int wpa_derive_ptk_ft(struct wpa_sm *sm, const unsigned char *src_addr,
wpa_ft_pasn_store_r1kh(sm, src_addr);
if (sm->force_kdk_derivation ||
(sm->secure_ltf && sm->ap_rsnxe && sm->ap_rsnxe_len >= 4 &&
sm->ap_rsnxe[3] & BIT(WLAN_RSNX_CAPAB_SECURE_LTF - 8)))
(sm->secure_ltf &&
ieee802_11_rsnx_capab(sm->ap_rsnxe, WLAN_RSNX_CAPAB_SECURE_LTF)))
kdk_len = WPA_KDK_MAX_LEN;
else
kdk_len = 0;
@ -672,8 +672,8 @@ int wpa_ft_process_response(struct wpa_sm *sm, const u8 *ies, size_t ies_len,
wpa_ft_pasn_store_r1kh(sm, bssid);
if (sm->force_kdk_derivation ||
(sm->secure_ltf && sm->ap_rsnxe && sm->ap_rsnxe_len >= 4 &&
sm->ap_rsnxe[3] & BIT(WLAN_RSNX_CAPAB_SECURE_LTF - 8)))
(sm->secure_ltf &&
ieee802_11_rsnx_capab(sm->ap_rsnxe, WLAN_RSNX_CAPAB_SECURE_LTF)))
kdk_len = WPA_KDK_MAX_LEN;
else
kdk_len = 0;