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Diffstat (limited to 'src/rsn_supp/wpa_ft.c')
-rw-r--r--src/rsn_supp/wpa_ft.c47
1 files changed, 39 insertions, 8 deletions
diff --git a/src/rsn_supp/wpa_ft.c b/src/rsn_supp/wpa_ft.c
index a543b7c..5eadd15 100644
--- a/src/rsn_supp/wpa_ft.c
+++ b/src/rsn_supp/wpa_ft.c
@@ -151,6 +151,7 @@ static u8 * wpa_ft_gen_req_ies(struct wpa_sm *sm, size_t *len,
struct rsn_ftie *ftie;
struct rsn_ie_hdr *rsnie;
u16 capab;
+ int mdie_len;
sm->ft_completed = 0;
sm->ft_reassoc_completed = 0;
@@ -247,14 +248,13 @@ static u8 * wpa_ft_gen_req_ies(struct wpa_sm *sm, size_t *len,
rsnie->len = (pos - (u8 *) rsnie) - 2;
/* MDIE */
- *pos++ = WLAN_EID_MOBILITY_DOMAIN;
- *pos++ = sizeof(*mdie);
- mdie = (struct rsn_mdie *) pos;
- pos += sizeof(*mdie);
- os_memcpy(mdie->mobility_domain, sm->mobility_domain,
- MOBILITY_DOMAIN_ID_LEN);
- mdie->ft_capab = ap_mdie && ap_mdie[1] >= 3 ? ap_mdie[4] :
- sm->mdie_ft_capab;
+ mdie_len = wpa_ft_add_mdie(sm, pos, buf_len - (pos - buf), ap_mdie);
+ if (mdie_len <= 0) {
+ os_free(buf);
+ return NULL;
+ }
+ mdie = (struct rsn_mdie *) (pos + 2);
+ pos += mdie_len;
/* FTIE[SNonce, [R1KH-ID,] R0KH-ID ] */
ftie_pos = pos;
@@ -373,6 +373,37 @@ int wpa_ft_prepare_auth_request(struct wpa_sm *sm, const u8 *mdie)
}
+int wpa_ft_add_mdie(struct wpa_sm *sm, u8 *buf, size_t buf_len,
+ const u8 *ap_mdie)
+{
+ u8 *pos = buf;
+ struct rsn_mdie *mdie;
+
+ if (buf_len < 2 + sizeof(*mdie)) {
+ wpa_printf(MSG_INFO,
+ "FT: Failed to add MDIE: short buffer, length=%zu",
+ buf_len);
+ return 0;
+ }
+
+ *pos++ = WLAN_EID_MOBILITY_DOMAIN;
+ *pos++ = sizeof(*mdie);
+ mdie = (struct rsn_mdie *) pos;
+ os_memcpy(mdie->mobility_domain, sm->mobility_domain,
+ MOBILITY_DOMAIN_ID_LEN);
+ mdie->ft_capab = ap_mdie && ap_mdie[1] >= 3 ? ap_mdie[4] :
+ sm->mdie_ft_capab;
+
+ return 2 + sizeof(*mdie);
+}
+
+
+const u8 * wpa_sm_get_ft_md(struct wpa_sm *sm)
+{
+ return sm->mobility_domain;
+}
+
+
int wpa_ft_process_response(struct wpa_sm *sm, const u8 *ies, size_t ies_len,
int ft_action, const u8 *target_ap,
const u8 *ric_ies, size_t ric_ies_len)