--- a/src/common/wpa_common.c +++ b/src/common/wpa_common.c @@ -811,6 +811,31 @@ const char * wpa_key_mgmt_txt(int key_mg } +static void wpa_fixup_wpa_ie_rsn(u8 *assoc_ie, const u8 *wpa_msg_ie, + size_t rsn_ie_len) +{ + int pos, count; + + pos = sizeof(struct rsn_ie_hdr) + RSN_SELECTOR_LEN; + if (rsn_ie_len < pos + 2) + return; + + count = WPA_GET_LE16(wpa_msg_ie + pos); + pos += 2 + count * RSN_SELECTOR_LEN; + if (rsn_ie_len < pos + 2) + return; + + count = WPA_GET_LE16(wpa_msg_ie + pos); + pos += 2 + count * RSN_SELECTOR_LEN; + if (rsn_ie_len < pos + 2) + return; + + if (!assoc_ie[pos] && !assoc_ie[pos + 1] && + (wpa_msg_ie[pos] || wpa_msg_ie[pos + 1])) + memcpy(&assoc_ie[pos], &wpa_msg_ie[pos], 2); +} + + int wpa_compare_rsn_ie(int ft_initial_assoc, const u8 *ie1, size_t ie1len, const u8 *ie2, size_t ie2len) @@ -818,8 +843,19 @@ int wpa_compare_rsn_ie(int ft_initial_as if (ie1 == NULL || ie2 == NULL) return -1; - if (ie1len == ie2len && os_memcmp(ie1, ie2, ie1len) == 0) - return 0; /* identical IEs */ + if (ie1len == ie2len) { + u8 *ie_tmp; + + if (os_memcmp(ie1, ie2, ie1len) == 0) + return 0; /* identical IEs */ + + ie_tmp = alloca(ie1len); + memcpy(ie_tmp, ie1, ie1len); + wpa_fixup_wpa_ie_rsn(ie_tmp, ie2, ie1len); + + if (os_memcmp(ie_tmp, ie2, ie1len) == 0) + return 0; /* only mismatch in RSN capabilties */ + } #ifdef CONFIG_IEEE80211R if (ft_initial_assoc) {