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FILS: Add new information elements

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This adds definitions for new information elements from P802.11ai/D11.0
and parsing of these IEs.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2015-09-01 17:50:04 +03:00 committed by Jouni Malinen
parent 677c2283e7
commit 1d29163035
3 changed files with 158 additions and 0 deletions
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113
src/common/ieee802_11_common.c
View file

@ -179,6 +179,90 @@ static int ieee802_11_parse_vendor_specific(const u8 *pos, size_t elen,
}
static int ieee802_11_parse_extension(const u8 *pos, size_t elen,
struct ieee802_11_elems *elems,
int show_errors)
{
u8 ext_id;
if (elen < 1) {
if (show_errors) {
wpa_printf(MSG_MSGDUMP,
"short information element (Ext)");
}
return -1;
}
ext_id = *pos++;
elen--;
switch (ext_id) {
case WLAN_EID_EXT_ASSOC_DELAY_INFO:
if (elen != 1)
break;
elems->assoc_delay_info = pos;
break;
case WLAN_EID_EXT_FILS_REQ_PARAMS:
if (elen < 3)
break;
elems->fils_req_params = pos;
elems->fils_req_params_len = elen;
break;
case WLAN_EID_EXT_FILS_KEY_CONFIRM:
elems->fils_key_confirm = pos;
elems->fils_key_confirm_len = elen;
break;
case WLAN_EID_EXT_FILS_SESSION:
if (elen != FILS_SESSION_LEN)
break;
elems->fils_session = pos;
break;
case WLAN_EID_EXT_FILS_HLP_CONTAINER:
if (elen < 2 * ETH_ALEN)
break;
elems->fils_hlp = pos;
elems->fils_hlp_len = elen;
break;
case WLAN_EID_EXT_FILS_IP_ADDR_ASSIGN:
if (elen < 1)
break;
elems->fils_ip_addr_assign = pos;
elems->fils_ip_addr_assign_len = elen;
break;
case WLAN_EID_EXT_KEY_DELIVERY:
if (elen < WPA_KEY_RSC_LEN)
break;
elems->key_delivery = pos;
elems->key_delivery_len = elen;
break;
case WLAN_EID_EXT_FILS_WRAPPED_DATA:
elems->fils_wrapped_data = pos;
elems->fils_wrapped_data_len = elen;
break;
case WLAN_EID_EXT_FILS_PUBLIC_KEY:
if (elen < 1)
break;
elems->fils_pk = pos;
elems->fils_pk_len = elen;
break;
case WLAN_EID_EXT_FILS_NONCE:
if (elen != FILS_NONCE_LEN)
break;
elems->fils_nonce = pos;
break;
default:
if (show_errors) {
wpa_printf(MSG_MSGDUMP,
"IEEE 802.11 element parsing ignored unknown element extension (ext_id=%u elen=%u)",
ext_id, (unsigned int) elen);
}
return -1;
}
return 0;
}
/**
* ieee802_11_parse_elems - Parse information elements in management frames
* @start: Pointer to the start of IEs
@ -379,6 +463,35 @@ ParseRes ieee802_11_parse_elems(const u8 *start, size_t len,
elems->rrm_enabled = pos;
elems->rrm_enabled_len = elen;
break;
case WLAN_EID_CAG_NUMBER:
elems->cag_number = pos;
elems->cag_number_len = elen;
break;
case WLAN_EID_AP_CSN:
if (elen < 1)
break;
elems->ap_csn = pos;
break;
case WLAN_EID_FILS_INDICATION:
if (elen < 2)
break;
elems->fils_indic = pos;
elems->fils_indic_len = elen;
break;
case WLAN_EID_DILS:
if (elen < 2)
break;
elems->dils = pos;
elems->dils_len = elen;
break;
case WLAN_EID_FRAGMENT:
/* TODO */
break;
case WLAN_EID_EXTENSION:
if (ieee802_11_parse_extension(pos, elen, elems,
show_errors))
unknown++;
break;
default:
unknown++;
if (!show_errors)

24
src/common/ieee802_11_common.h
View file

@ -64,6 +64,20 @@ struct ieee802_11_elems {
const u8 *pref_freq_list;
const u8 *supp_op_classes;
const u8 *rrm_enabled;
const u8 *cag_number;
const u8 *ap_csn;
const u8 *fils_indic;
const u8 *dils;
const u8 *assoc_delay_info;
const u8 *fils_req_params;
const u8 *fils_key_confirm;
const u8 *fils_session;
const u8 *fils_hlp;
const u8 *fils_ip_addr_assign;
const u8 *key_delivery;
const u8 *fils_wrapped_data;
const u8 *fils_pk;
const u8 *fils_nonce;
u8 ssid_len;
u8 supp_rates_len;
@ -96,6 +110,16 @@ struct ieee802_11_elems {
u8 pref_freq_list_len;
u8 supp_op_classes_len;
u8 rrm_enabled_len;
u8 cag_number_len;
u8 fils_indic_len;
u8 dils_len;
u8 fils_req_params_len;
u8 fils_key_confirm_len;
u8 fils_hlp_len;
u8 fils_ip_addr_assign_len;
u8 key_delivery_len;
u8 fils_wrapped_data_len;
u8 fils_pk_len;
struct mb_ies_info mb_ies;
};

21
src/common/ieee802_11_defs.h
View file

@ -292,6 +292,24 @@
#define WLAN_EID_VHT_QUIET_CHANNEL 198
#define WLAN_EID_VHT_OPERATING_MODE_NOTIFICATION 199
#define WLAN_EID_VENDOR_SPECIFIC 221
#define WLAN_EID_CAG_NUMBER 237
#define WLAN_EID_AP_CSN 239
#define WLAN_EID_FILS_INDICATION 240
#define WLAN_EID_DILS 241
#define WLAN_EID_FRAGMENT 242
#define WLAN_EID_EXTENSION 255
/* Element ID Extension (EID 255) values */
#define WLAN_EID_EXT_ASSOC_DELAY_INFO 1
#define WLAN_EID_EXT_FILS_REQ_PARAMS 2
#define WLAN_EID_EXT_FILS_KEY_CONFIRM 3
#define WLAN_EID_EXT_FILS_SESSION 4
#define WLAN_EID_EXT_FILS_HLP_CONTAINER 5
#define WLAN_EID_EXT_FILS_IP_ADDR_ASSIGN 6
#define WLAN_EID_EXT_KEY_DELIVERY 7
#define WLAN_EID_EXT_FILS_WRAPPED_DATA 8
#define WLAN_EID_EXT_FILS_PUBLIC_KEY 12
#define WLAN_EID_EXT_FILS_NONCE 13
/* Action frame categories (IEEE 802.11-2007, 7.3.1.11, Table 7-24) */
@ -505,6 +523,9 @@ enum lci_req_subelem {
LCI_REQ_SUBELEM_MAX_AGE = 4,
};
#define FILS_NONCE_LEN 16
#define FILS_SESSION_LEN 8
#ifdef _MSC_VER
#pragma pack(push, 1)
#endif /* _MSC_VER */