14126Szf162725 /*
25895Syz147064 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
34126Szf162725 * Use is subject to license terms.
44126Szf162725 */
54126Szf162725
64126Szf162725 /*
74126Szf162725 * Copyright (c) 2004, Sam Leffler <sam@errno.com>
84126Szf162725 * Sun elects to license this software under the BSD license.
94126Szf162725 * See README for more details.
104126Szf162725 */
114126Szf162725
124126Szf162725 #include <stdio.h>
134126Szf162725 #include <stdlib.h>
144126Szf162725 #include <errno.h>
154126Szf162725 #include <stdarg.h>
164126Szf162725 #include <fcntl.h>
174126Szf162725 #include <unistd.h>
184126Szf162725 #include <stropts.h>
194126Szf162725 #include <string.h>
204126Szf162725 #include <stddef.h>
214126Szf162725
224126Szf162725 #include "wpa_impl.h"
234126Szf162725 #include "driver.h"
244126Szf162725
254126Szf162725 #define WPA_STATUS(status) (status == DLADM_STATUS_OK? 0 : -1)
264126Szf162725
274126Szf162725 /*
284126Szf162725 * get_bssid - get the current BSSID
295895Syz147064 * @linkid: linkid of the given interface
304126Szf162725 * @bssid: buffer for BSSID (IEEE80211_ADDR_LEN = 6 bytes)
314126Szf162725 *
324126Szf162725 * Returns: 0 on success, -1 on failure
334126Szf162725 *
344126Szf162725 * Query kernel driver for the current BSSID and copy it to @bssid.
354126Szf162725 * Setting @bssid to 00:00:00:00:00:00 is recommended if the STA is not
364126Szf162725 * associated.
374126Szf162725 */
384126Szf162725 int
wpa_driver_wifi_get_bssid(dladm_handle_t handle,datalink_id_t linkid,char * bssid)39*8453SAnurag.Maskey@Sun.COM wpa_driver_wifi_get_bssid(dladm_handle_t handle, datalink_id_t linkid,
40*8453SAnurag.Maskey@Sun.COM char *bssid)
414126Szf162725 {
425895Syz147064 dladm_status_t status;
434126Szf162725 dladm_wlan_linkattr_t attr;
444126Szf162725 dladm_wlan_attr_t *wl_attrp;
454126Szf162725
46*8453SAnurag.Maskey@Sun.COM status = dladm_wlan_get_linkattr(handle, linkid, &attr);
475895Syz147064 if (status != DLADM_STATUS_OK)
484126Szf162725 return (-1);
494126Szf162725
504126Szf162725 wl_attrp = &attr.la_wlan_attr;
514126Szf162725 if ((attr.la_valid & DLADM_WLAN_LINKATTR_WLAN) == 0 ||
524126Szf162725 (wl_attrp->wa_valid & DLADM_WLAN_ATTR_BSSID) == 0)
534126Szf162725 return (-1);
544126Szf162725
554126Szf162725 (void) memcpy(bssid, wl_attrp->wa_bssid.wb_bytes, DLADM_WLAN_BSSID_LEN);
564126Szf162725
574126Szf162725 wpa_printf(MSG_DEBUG, "wpa_driver_wifi_get_bssid: " MACSTR,
584126Szf162725 MAC2STR((unsigned char *)bssid));
594126Szf162725
605895Syz147064 return (WPA_STATUS(status));
614126Szf162725 }
624126Szf162725
634126Szf162725 /*
644126Szf162725 * get_ssid - get the current SSID
655895Syz147064 * @linkid: linkid of the given interface
664126Szf162725 * @ssid: buffer for SSID (at least 32 bytes)
674126Szf162725 *
684126Szf162725 * Returns: length of the SSID on success, -1 on failure
694126Szf162725 *
704126Szf162725 * Query kernel driver for the current SSID and copy it to @ssid.
714126Szf162725 * Returning zero is recommended if the STA is not associated.
724126Szf162725 */
734126Szf162725 int
wpa_driver_wifi_get_ssid(dladm_handle_t handle,datalink_id_t linkid,char * ssid)74*8453SAnurag.Maskey@Sun.COM wpa_driver_wifi_get_ssid(dladm_handle_t handle, datalink_id_t linkid,
75*8453SAnurag.Maskey@Sun.COM char *ssid)
764126Szf162725 {
774126Szf162725 int ret;
785895Syz147064 dladm_status_t status;
794126Szf162725 dladm_wlan_linkattr_t attr;
804126Szf162725 dladm_wlan_attr_t *wl_attrp;
814126Szf162725
82*8453SAnurag.Maskey@Sun.COM status = dladm_wlan_get_linkattr(handle, linkid, &attr);
835895Syz147064 if (status != DLADM_STATUS_OK)
844126Szf162725 return (-1);
854126Szf162725
864126Szf162725 wl_attrp = &attr.la_wlan_attr;
874126Szf162725 if ((attr.la_valid & DLADM_WLAN_LINKATTR_WLAN) == 0 ||
884126Szf162725 (wl_attrp->wa_valid & DLADM_WLAN_ATTR_ESSID) == 0)
894126Szf162725 return (-1);
904126Szf162725
914126Szf162725 (void) memcpy(ssid, wl_attrp->wa_essid.we_bytes, MAX_ESSID_LENGTH);
924126Szf162725 ret = strlen(ssid);
934126Szf162725
944126Szf162725 wpa_printf(MSG_DEBUG, "wpa_driver_wifi_get_ssid: ssid=%s len=%d",
954126Szf162725 ssid, ret);
964126Szf162725
974126Szf162725 return (ret);
984126Szf162725 }
994126Szf162725
1004126Szf162725 static int
wpa_driver_wifi_set_wpa_ie(dladm_handle_t handle,datalink_id_t linkid,uint8_t * wpa_ie,uint32_t wpa_ie_len)101*8453SAnurag.Maskey@Sun.COM wpa_driver_wifi_set_wpa_ie(dladm_handle_t handle, datalink_id_t linkid,
102*8453SAnurag.Maskey@Sun.COM uint8_t *wpa_ie, uint32_t wpa_ie_len)
1034126Szf162725 {
1045895Syz147064 dladm_status_t status;
1054126Szf162725
1064126Szf162725 wpa_printf(MSG_DEBUG, "%s", "wpa_driver_wifi_set_wpa_ie");
107*8453SAnurag.Maskey@Sun.COM status = dladm_wlan_wpa_set_ie(handle, linkid, wpa_ie, wpa_ie_len);
1084126Szf162725
1095895Syz147064 return (WPA_STATUS(status));
1104126Szf162725 }
1114126Szf162725
1124126Szf162725 /*
1134126Szf162725 * set_wpa - enable/disable WPA support
1145895Syz147064 * @linkid: linkid of the given interface
1154126Szf162725 * @enabled: 1 = enable, 0 = disable
1164126Szf162725 *
1174126Szf162725 * Returns: 0 on success, -1 on failure
1184126Szf162725 *
1194126Szf162725 * Configure the kernel driver to enable/disable WPA support. This may
1204126Szf162725 * be empty function, if WPA support is always enabled. Common
1214126Szf162725 * configuration items are WPA IE (clearing it when WPA support is
1224126Szf162725 * disabled), Privacy flag for capability field, roaming mode (need to
1234126Szf162725 * allow wpa_supplicant to control roaming).
1244126Szf162725 */
1254126Szf162725 static int
wpa_driver_wifi_set_wpa(dladm_handle_t handle,datalink_id_t linkid,boolean_t enabled)126*8453SAnurag.Maskey@Sun.COM wpa_driver_wifi_set_wpa(dladm_handle_t handle, datalink_id_t linkid,
127*8453SAnurag.Maskey@Sun.COM boolean_t enabled)
1284126Szf162725 {
1295895Syz147064 dladm_status_t status;
1304126Szf162725
1314126Szf162725 wpa_printf(MSG_DEBUG, "wpa_driver_wifi_set_wpa: enable=%d", enabled);
1324126Szf162725
133*8453SAnurag.Maskey@Sun.COM if (!enabled && wpa_driver_wifi_set_wpa_ie(handle, linkid, NULL, 0) < 0)
1344126Szf162725 return (-1);
1354126Szf162725
136*8453SAnurag.Maskey@Sun.COM status = dladm_wlan_wpa_set_wpa(handle, linkid, enabled);
1374126Szf162725
1385895Syz147064 return (WPA_STATUS(status));
1394126Szf162725 }
1404126Szf162725
1414126Szf162725 static int
wpa_driver_wifi_del_key(dladm_handle_t handle,datalink_id_t linkid,int key_idx,unsigned char * addr)142*8453SAnurag.Maskey@Sun.COM wpa_driver_wifi_del_key(dladm_handle_t handle, datalink_id_t linkid,
143*8453SAnurag.Maskey@Sun.COM int key_idx, unsigned char *addr)
1444126Szf162725 {
1455895Syz147064 dladm_status_t status;
1464126Szf162725 dladm_wlan_bssid_t bss;
1474126Szf162725
1484126Szf162725 wpa_printf(MSG_DEBUG, "%s: id=%d", "wpa_driver_wifi_del_key",
1494126Szf162725 key_idx);
1504126Szf162725
1514126Szf162725 (void) memcpy(bss.wb_bytes, addr, DLADM_WLAN_BSSID_LEN);
152*8453SAnurag.Maskey@Sun.COM status = dladm_wlan_wpa_del_key(handle, linkid, key_idx, &bss);
1534126Szf162725
1545895Syz147064 return (WPA_STATUS(status));
1554126Szf162725 }
1564126Szf162725
1574126Szf162725 /*
1584126Szf162725 * set_key - configure encryption key
1595895Syz147064 * @linkid: linkid of the given interface
1604126Szf162725 * @alg: encryption algorithm (%WPA_ALG_NONE, %WPA_ALG_WEP,
1614126Szf162725 * %WPA_ALG_TKIP, %WPA_ALG_CCMP); %WPA_ALG_NONE clears the key.
1624126Szf162725 * @addr: address of the peer STA or ff:ff:ff:ff:ff:ff for
1634126Szf162725 * broadcast/default keys
1644126Szf162725 * @key_idx: key index (0..3), always 0 for unicast keys
1654126Szf162725 * @set_tx: configure this key as the default Tx key (only used when
1664126Szf162725 * driver does not support separate unicast/individual key
1674126Szf162725 * @seq: sequence number/packet number, @seq_len octets, the next
1684126Szf162725 * packet number to be used for in replay protection; configured
1694126Szf162725 * for Rx keys (in most cases, this is only used with broadcast
1704126Szf162725 * keys and set to zero for unicast keys)
1714126Szf162725 * @seq_len: length of the @seq, depends on the algorithm:
1724126Szf162725 * TKIP: 6 octets, CCMP: 6 octets
1734126Szf162725 * @key: key buffer; TKIP: 16-byte temporal key, 8-byte Tx Mic key,
1744126Szf162725 * 8-byte Rx Mic Key
1754126Szf162725 * @key_len: length of the key buffer in octets (WEP: 5 or 13,
1764126Szf162725 * TKIP: 32, CCMP: 16)
1774126Szf162725 *
1784126Szf162725 * Returns: 0 on success, -1 on failure
1794126Szf162725 *
1804126Szf162725 * Configure the given key for the kernel driver. If the driver
1814126Szf162725 * supports separate individual keys (4 default keys + 1 individual),
1824126Szf162725 * @addr can be used to determine whether the key is default or
1834126Szf162725 * individual. If only 4 keys are supported, the default key with key
1844126Szf162725 * index 0 is used as the individual key. STA must be configured to use
1854126Szf162725 * it as the default Tx key (@set_tx is set) and accept Rx for all the
1864126Szf162725 * key indexes. In most cases, WPA uses only key indexes 1 and 2 for
1874126Szf162725 * broadcast keys, so key index 0 is available for this kind of
1884126Szf162725 * configuration.
1894126Szf162725 */
1904126Szf162725 static int
wpa_driver_wifi_set_key(dladm_handle_t handle,datalink_id_t linkid,wpa_alg alg,unsigned char * addr,int key_idx,boolean_t set_tx,uint8_t * seq,uint32_t seq_len,uint8_t * key,uint32_t key_len)191*8453SAnurag.Maskey@Sun.COM wpa_driver_wifi_set_key(dladm_handle_t handle, datalink_id_t linkid,
192*8453SAnurag.Maskey@Sun.COM wpa_alg alg, unsigned char *addr, int key_idx, boolean_t set_tx,
193*8453SAnurag.Maskey@Sun.COM uint8_t *seq, uint32_t seq_len, uint8_t *key, uint32_t key_len)
1944126Szf162725 {
1954126Szf162725 char *alg_name;
1964126Szf162725 dladm_wlan_cipher_t cipher;
1974126Szf162725 dladm_wlan_bssid_t bss;
1985895Syz147064 dladm_status_t status;
1994126Szf162725
2004126Szf162725 wpa_printf(MSG_DEBUG, "%s", "wpa_driver_wifi_set_key");
2014126Szf162725 if (alg == WPA_ALG_NONE)
202*8453SAnurag.Maskey@Sun.COM return (wpa_driver_wifi_del_key(handle, linkid, key_idx, addr));
2034126Szf162725
2044126Szf162725 switch (alg) {
2054126Szf162725 case WPA_ALG_WEP:
2064126Szf162725 alg_name = "WEP";
2074126Szf162725 cipher = DLADM_WLAN_CIPHER_WEP;
2084126Szf162725 break;
2094126Szf162725 case WPA_ALG_TKIP:
2104126Szf162725 alg_name = "TKIP";
2114126Szf162725 cipher = DLADM_WLAN_CIPHER_TKIP;
2124126Szf162725 break;
2134126Szf162725 case WPA_ALG_CCMP:
2144126Szf162725 alg_name = "CCMP";
2154126Szf162725 cipher = DLADM_WLAN_CIPHER_AES_CCM;
2164126Szf162725 break;
2174126Szf162725 default:
2184126Szf162725 wpa_printf(MSG_DEBUG, "wpa_driver_wifi_set_key:"
2194126Szf162725 " unknown/unsupported algorithm %d", alg);
2204126Szf162725 return (-1);
2214126Szf162725 }
2224126Szf162725
2234126Szf162725 wpa_printf(MSG_DEBUG, "wpa_driver_wifi_set_key: alg=%s key_idx=%d"
2244126Szf162725 " set_tx=%d seq_len=%d seq=%d key_len=%d",
2254126Szf162725 alg_name, key_idx, set_tx,
2267249Sff224033 seq_len, *(uint64_t *)(uintptr_t)seq, key_len);
2274126Szf162725
2284126Szf162725 if (seq_len > sizeof (uint64_t)) {
2294126Szf162725 wpa_printf(MSG_DEBUG, "wpa_driver_wifi_set_key:"
2304126Szf162725 " seq_len %d too big", seq_len);
2314126Szf162725 return (-1);
2324126Szf162725 }
2334126Szf162725 (void) memcpy(bss.wb_bytes, addr, DLADM_WLAN_BSSID_LEN);
2344126Szf162725
235*8453SAnurag.Maskey@Sun.COM status = dladm_wlan_wpa_set_key(handle, linkid, cipher, &bss, set_tx,
2367249Sff224033 *(uint64_t *)(uintptr_t)seq, key_idx, key, key_len);
2374126Szf162725
2385895Syz147064 return (WPA_STATUS(status));
2394126Szf162725 }
2404126Szf162725
2414126Szf162725 /*
2424126Szf162725 * disassociate - request driver to disassociate
2435895Syz147064 * @linkid: linkid of the given interface
2444126Szf162725 * @reason_code: 16-bit reason code to be sent in the disassociation
2454126Szf162725 * frame
2464126Szf162725 *
2474126Szf162725 * Return: 0 on success, -1 on failure
2484126Szf162725 */
2494126Szf162725 static int
wpa_driver_wifi_disassociate(dladm_handle_t handle,datalink_id_t linkid,int reason_code)250*8453SAnurag.Maskey@Sun.COM wpa_driver_wifi_disassociate(dladm_handle_t handle, datalink_id_t linkid,
251*8453SAnurag.Maskey@Sun.COM int reason_code)
2524126Szf162725 {
2535895Syz147064 dladm_status_t status;
2544126Szf162725
2554126Szf162725 wpa_printf(MSG_DEBUG, "wpa_driver_wifi_disassociate");
2564126Szf162725
257*8453SAnurag.Maskey@Sun.COM status = dladm_wlan_wpa_set_mlme(handle, linkid,
258*8453SAnurag.Maskey@Sun.COM DLADM_WLAN_MLME_DISASSOC, reason_code, NULL);
2594126Szf162725
2605895Syz147064 return (WPA_STATUS(status));
2614126Szf162725 }
2624126Szf162725
2634126Szf162725 /*
2644126Szf162725 * associate - request driver to associate
2655895Syz147064 * @linkid: linkid of the given interface
2664126Szf162725 * @bssid: BSSID of the selected AP
2674126Szf162725 * @wpa_ie: WPA information element to be included in (Re)Association
2684126Szf162725 * Request (including information element id and length). Use of
2694126Szf162725 * this WPA IE is optional. If the driver generates the WPA IE, it
2704126Szf162725 * can use @pairwise_suite, @group_suite, and @key_mgmt_suite
2714126Szf162725 * to select proper algorithms. In this case, the driver has to
2724126Szf162725 * notify wpa_supplicant about the used WPA IE by generating an
2734126Szf162725 * event that the interface code will convert into EVENT_ASSOCINFO
2744126Szf162725 * data (see wpa_supplicant.h). When using WPA2/IEEE 802.11i,
2754126Szf162725 * @wpa_ie is used for RSN IE instead. The driver can determine
2764126Szf162725 * which version is used by looking at the first byte of the IE
2774126Szf162725 * (0xdd for WPA, 0x30 for WPA2/RSN).
2784126Szf162725 * @wpa_ie_len: length of the @wpa_ie
2794126Szf162725 *
2804126Szf162725 * Return: 0 on success, -1 on failure
2814126Szf162725 */
2824126Szf162725 static int
wpa_driver_wifi_associate(dladm_handle_t handle,datalink_id_t linkid,const char * bssid,uint8_t * wpa_ie,uint32_t wpa_ie_len)283*8453SAnurag.Maskey@Sun.COM wpa_driver_wifi_associate(dladm_handle_t handle, datalink_id_t linkid,
284*8453SAnurag.Maskey@Sun.COM const char *bssid, uint8_t *wpa_ie, uint32_t wpa_ie_len)
2854126Szf162725 {
2865895Syz147064 dladm_status_t status;
2874126Szf162725 dladm_wlan_bssid_t bss;
2884126Szf162725
2894126Szf162725 wpa_printf(MSG_DEBUG, "wpa_driver_wifi_associate : "
2904126Szf162725 MACSTR, MAC2STR(bssid));
2914126Szf162725
2924126Szf162725 /*
2934126Szf162725 * NB: Don't need to set the freq or cipher-related state as
2944126Szf162725 * this is implied by the bssid which is used to locate
2954126Szf162725 * the scanned node state which holds it.
2964126Szf162725 */
297*8453SAnurag.Maskey@Sun.COM if (wpa_driver_wifi_set_wpa_ie(handle, linkid, wpa_ie, wpa_ie_len) < 0)
2984126Szf162725 return (-1);
2994126Szf162725
3004126Szf162725 (void) memcpy(bss.wb_bytes, bssid, DLADM_WLAN_BSSID_LEN);
301*8453SAnurag.Maskey@Sun.COM status = dladm_wlan_wpa_set_mlme(handle, linkid, DLADM_WLAN_MLME_ASSOC,
3024126Szf162725 0, &bss);
3034126Szf162725
3045895Syz147064 return (WPA_STATUS(status));
3054126Szf162725 }
3064126Szf162725
3074126Szf162725 /*
3084126Szf162725 * scan - request the driver to initiate scan
3095895Syz147064 * @linkid: linkid of the given interface
3104126Szf162725 *
3114126Szf162725 * Return: 0 on success, -1 on failure
3124126Szf162725 *
3134126Szf162725 * Once the scan results are ready, the driver should report scan
3144126Szf162725 * results event for wpa_supplicant which will eventually request the
3154126Szf162725 * results with wpa_driver_get_scan_results().
3164126Szf162725 */
3174126Szf162725 static int
wpa_driver_wifi_scan(dladm_handle_t handle,datalink_id_t linkid)318*8453SAnurag.Maskey@Sun.COM wpa_driver_wifi_scan(dladm_handle_t handle, datalink_id_t linkid)
3194126Szf162725 {
3205895Syz147064 dladm_status_t status;
3214126Szf162725
3224126Szf162725 wpa_printf(MSG_DEBUG, "%s", "wpa_driver_wifi_scan");
3234126Szf162725 /*
3244126Szf162725 * We force the state to INIT before calling ieee80211_new_state
3254126Szf162725 * to get ieee80211_begin_scan called. We really want to scan w/o
3264126Szf162725 * altering the current state but that's not possible right now.
3274126Szf162725 */
328*8453SAnurag.Maskey@Sun.COM (void) wpa_driver_wifi_disassociate(handle, linkid,
3294126Szf162725 DLADM_WLAN_REASON_DISASSOC_LEAVING);
3304126Szf162725
331*8453SAnurag.Maskey@Sun.COM status = dladm_wlan_scan(handle, linkid, NULL, NULL);
3324126Szf162725
3334126Szf162725 wpa_printf(MSG_DEBUG, "%s: return", "wpa_driver_wifi_scan");
3345895Syz147064 return (WPA_STATUS(status));
3354126Szf162725 }
3364126Szf162725
3374126Szf162725 /*
3384126Szf162725 * get_scan_results - fetch the latest scan results
3395895Syz147064 * @linkid: linkid of the given interface
3404126Szf162725 * @results: pointer to buffer for scan results
3414126Szf162725 * @max_size: maximum number of entries (buffer size)
3424126Szf162725 *
3434126Szf162725 * Return: number of scan result entries used on success, -1 on failure
3444126Szf162725 *
3454126Szf162725 * If scan results include more than @max_size BSSes, @max_size will be
3464126Szf162725 * returned and the remaining entries will not be included in the
3474126Szf162725 * buffer.
3484126Szf162725 */
3494126Szf162725 int
wpa_driver_wifi_get_scan_results(dladm_handle_t handle,datalink_id_t linkid,dladm_wlan_ess_t * results,uint32_t max_size)350*8453SAnurag.Maskey@Sun.COM wpa_driver_wifi_get_scan_results(dladm_handle_t handle, datalink_id_t linkid,
3514126Szf162725 dladm_wlan_ess_t *results, uint32_t max_size)
3524126Szf162725 {
3534126Szf162725 uint_t ret;
3544126Szf162725
3555895Syz147064 wpa_printf(MSG_DEBUG, "%s: max size=%d\n",
3565895Syz147064 "wpa_driver_wifi_get_scan_results", max_size);
3574126Szf162725
358*8453SAnurag.Maskey@Sun.COM if (dladm_wlan_wpa_get_sr(handle, linkid, results, max_size, &ret)
3594126Szf162725 != DLADM_STATUS_OK) {
3604126Szf162725 return (-1);
3614126Szf162725 }
3624126Szf162725
3634126Szf162725 return (ret);
3644126Szf162725 }
3654126Szf162725
3664126Szf162725 struct wpa_driver_ops wpa_driver_wifi_ops = {
3674126Szf162725 wpa_driver_wifi_get_bssid,
3684126Szf162725 wpa_driver_wifi_get_ssid,
3694126Szf162725 wpa_driver_wifi_set_wpa,
3704126Szf162725 wpa_driver_wifi_set_key,
3714126Szf162725 wpa_driver_wifi_scan,
3724126Szf162725 wpa_driver_wifi_get_scan_results,
3734126Szf162725 wpa_driver_wifi_disassociate,
3744126Szf162725 wpa_driver_wifi_associate
3754126Szf162725 };
376