2 * Driver interaction with Linux nl80211/cfg80211
3 * Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2003-2004, Instant802 Networks, Inc.
5 * Copyright (c) 2005-2006, Devicescape Software, Inc.
6 * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
7 * Copyright (c) 2009, Atheros Communications
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
13 * Alternatively, this software may be distributed under the terms of BSD
16 * See README and COPYING for more details.
20 #include <sys/ioctl.h>
21 #include <net/if_arp.h>
23 #include <netlink/genl/genl.h>
24 #include <netlink/genl/family.h>
25 #include <netlink/genl/ctrl.h>
26 #include "nl80211_copy.h"
31 #include "common/ieee802_11_defs.h"
33 #if defined(CONFIG_AP) || defined(HOSTAPD)
34 #include <netpacket/packet.h>
35 #include <linux/filter.h>
37 #include "radiotap_iter.h"
39 #include "../../hostapd/sta_flags.h"
40 #endif /* CONFIG_AP || HOSTAPD */
43 /* libnl 2.0 compatibility code */
44 #define nl_handle nl_sock
45 #define nl_handle_alloc_cb nl_socket_alloc_cb
46 #define nl_handle_destroy nl_socket_free
47 #endif /* CONFIG_LIBNL20 */
51 #define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
54 #define IFF_DORMANT 0x20000 /* driver signals dormant */
57 #ifndef IF_OPER_DORMANT
58 #define IF_OPER_DORMANT 5
65 struct i802_bss
*next
;
67 unsigned int beacon_set
:1;
70 struct wpa_driver_nl80211_data
{
73 int ioctl_sock
; /* socket for ioctl() use */
74 char ifname
[IFNAMSIZ
+ 1];
77 struct wpa_driver_capa capa
;
82 int scan_complete_events
;
84 struct nl_handle
*nl_handle
;
85 struct nl_handle
*nl_handle_event
;
86 struct nl_cache
*nl_cache
;
87 struct nl_cache
*nl_cache_event
;
89 struct genl_family
*nl80211
;
91 u8 auth_bssid
[ETH_ALEN
];
97 int ap_scan_as_station
;
102 unsigned int beacon_set
:1;
105 int eapol_sock
; /* socket for EAPOL frames */
107 int default_if_indices
[16];
119 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx
,
121 static int wpa_driver_nl80211_set_mode(void *priv
, int mode
);
123 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data
*drv
);
124 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data
*drv
,
125 const u8
*addr
, int cmd
, u16 reason_code
);
127 #if defined(CONFIG_AP) || defined(HOSTAPD)
128 static void nl80211_remove_monitor_interface(
129 struct wpa_driver_nl80211_data
*drv
);
130 #endif /* CONFIG_AP || HOSTAPD */
133 static void nl80211_remove_iface(struct wpa_driver_nl80211_data
*drv
,
135 #endif /* CONFIG_AP */
138 static void add_ifidx(struct wpa_driver_nl80211_data
*drv
, int ifidx
);
139 static void del_ifidx(struct wpa_driver_nl80211_data
*drv
, int ifidx
);
140 static struct i802_bss
* get_bss(struct wpa_driver_nl80211_data
*drv
,
142 static void nl80211_remove_iface(struct wpa_driver_nl80211_data
*drv
,
144 static int i802_set_freq(void *priv
, struct hostapd_freq_params
*freq
);
149 static int ack_handler(struct nl_msg
*msg
, void *arg
)
156 static int finish_handler(struct nl_msg
*msg
, void *arg
)
163 static int error_handler(struct sockaddr_nl
*nla
, struct nlmsgerr
*err
,
172 static int no_seq_check(struct nl_msg
*msg
, void *arg
)
178 static int send_and_recv_msgs(struct wpa_driver_nl80211_data
*drv
,
180 int (*valid_handler
)(struct nl_msg
*, void *),
186 cb
= nl_cb_clone(drv
->nl_cb
);
190 err
= nl_send_auto_complete(drv
->nl_handle
, msg
);
196 nl_cb_err(cb
, NL_CB_CUSTOM
, error_handler
, &err
);
197 nl_cb_set(cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, finish_handler
, &err
);
198 nl_cb_set(cb
, NL_CB_ACK
, NL_CB_CUSTOM
, ack_handler
, &err
);
201 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
,
202 valid_handler
, valid_data
);
205 nl_recvmsgs(drv
->nl_handle
, cb
);
219 static int family_handler(struct nl_msg
*msg
, void *arg
)
221 struct family_data
*res
= arg
;
222 struct nlattr
*tb
[CTRL_ATTR_MAX
+ 1];
223 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
224 struct nlattr
*mcgrp
;
227 nla_parse(tb
, CTRL_ATTR_MAX
, genlmsg_attrdata(gnlh
, 0),
228 genlmsg_attrlen(gnlh
, 0), NULL
);
229 if (!tb
[CTRL_ATTR_MCAST_GROUPS
])
232 nla_for_each_nested(mcgrp
, tb
[CTRL_ATTR_MCAST_GROUPS
], i
) {
233 struct nlattr
*tb2
[CTRL_ATTR_MCAST_GRP_MAX
+ 1];
234 nla_parse(tb2
, CTRL_ATTR_MCAST_GRP_MAX
, nla_data(mcgrp
),
235 nla_len(mcgrp
), NULL
);
236 if (!tb2
[CTRL_ATTR_MCAST_GRP_NAME
] ||
237 !tb2
[CTRL_ATTR_MCAST_GRP_ID
] ||
238 os_strncmp(nla_data(tb2
[CTRL_ATTR_MCAST_GRP_NAME
]),
240 nla_len(tb2
[CTRL_ATTR_MCAST_GRP_NAME
])) != 0)
242 res
->id
= nla_get_u32(tb2
[CTRL_ATTR_MCAST_GRP_ID
]);
250 static int nl_get_multicast_id(struct wpa_driver_nl80211_data
*drv
,
251 const char *family
, const char *group
)
255 struct family_data res
= { group
, -ENOENT
};
260 genlmsg_put(msg
, 0, 0, genl_ctrl_resolve(drv
->nl_handle
, "nlctrl"),
261 0, 0, CTRL_CMD_GETFAMILY
, 0);
262 NLA_PUT_STRING(msg
, CTRL_ATTR_FAMILY_NAME
, family
);
264 ret
= send_and_recv_msgs(drv
, msg
, family_handler
, &res
);
276 static int get_ifhwaddr(struct wpa_driver_nl80211_data
*drv
,
277 const char *ifname
, u8
*addr
)
281 os_memset(&ifr
, 0, sizeof(ifr
));
282 os_strlcpy(ifr
.ifr_name
, ifname
, IFNAMSIZ
);
283 if (ioctl(drv
->ioctl_sock
, SIOCGIFHWADDR
, &ifr
)) {
284 wpa_printf(MSG_ERROR
, "%s: ioctl(SIOCGIFHWADDR): %d (%s)",
285 ifname
, errno
, strerror(errno
));
289 if (ifr
.ifr_hwaddr
.sa_family
!= ARPHRD_ETHER
) {
290 wpa_printf(MSG_ERROR
, "%s: Invalid HW-addr family 0x%04x",
291 ifname
, ifr
.ifr_hwaddr
.sa_family
);
294 os_memcpy(addr
, ifr
.ifr_hwaddr
.sa_data
, ETH_ALEN
);
300 static int set_ifhwaddr(struct wpa_driver_nl80211_data
*drv
,
301 const char *ifname
, const u8
*addr
)
305 os_memset(&ifr
, 0, sizeof(ifr
));
306 os_strlcpy(ifr
.ifr_name
, ifname
, IFNAMSIZ
);
307 os_memcpy(ifr
.ifr_hwaddr
.sa_data
, addr
, ETH_ALEN
);
308 ifr
.ifr_hwaddr
.sa_family
= ARPHRD_ETHER
;
310 if (ioctl(drv
->ioctl_sock
, SIOCSIFHWADDR
, &ifr
)) {
311 wpa_printf(MSG_DEBUG
, "%s: ioctl(SIOCSIFHWADDR): %d (%s)",
312 ifname
, errno
, strerror(errno
));
321 static int wpa_driver_nl80211_send_oper_ifla(
322 struct wpa_driver_nl80211_data
*drv
,
323 int linkmode
, int operstate
)
327 struct ifinfomsg ifinfo
;
334 os_memset(&req
, 0, sizeof(req
));
336 req
.hdr
.nlmsg_len
= NLMSG_LENGTH(sizeof(struct ifinfomsg
));
337 req
.hdr
.nlmsg_type
= RTM_SETLINK
;
338 req
.hdr
.nlmsg_flags
= NLM_F_REQUEST
;
339 req
.hdr
.nlmsg_seq
= ++nl_seq
;
340 req
.hdr
.nlmsg_pid
= 0;
342 req
.ifinfo
.ifi_family
= AF_UNSPEC
;
343 req
.ifinfo
.ifi_type
= 0;
344 req
.ifinfo
.ifi_index
= drv
->ifindex
;
345 req
.ifinfo
.ifi_flags
= 0;
346 req
.ifinfo
.ifi_change
= 0;
348 if (linkmode
!= -1) {
349 rta
= aliasing_hide_typecast(
350 ((char *) &req
+ NLMSG_ALIGN(req
.hdr
.nlmsg_len
)),
352 rta
->rta_type
= IFLA_LINKMODE
;
353 rta
->rta_len
= RTA_LENGTH(sizeof(char));
354 *((char *) RTA_DATA(rta
)) = linkmode
;
355 req
.hdr
.nlmsg_len
= NLMSG_ALIGN(req
.hdr
.nlmsg_len
) +
356 RTA_LENGTH(sizeof(char));
358 if (operstate
!= -1) {
359 rta
= aliasing_hide_typecast(
360 ((char *) &req
+ NLMSG_ALIGN(req
.hdr
.nlmsg_len
)),
362 rta
->rta_type
= IFLA_OPERSTATE
;
363 rta
->rta_len
= RTA_LENGTH(sizeof(char));
364 *((char *) RTA_DATA(rta
)) = operstate
;
365 req
.hdr
.nlmsg_len
= NLMSG_ALIGN(req
.hdr
.nlmsg_len
) +
366 RTA_LENGTH(sizeof(char));
369 wpa_printf(MSG_DEBUG
, "nl80211: Operstate: linkmode=%d, operstate=%d",
370 linkmode
, operstate
);
372 ret
= send(drv
->link_event_sock
, &req
, req
.hdr
.nlmsg_len
, 0);
374 wpa_printf(MSG_DEBUG
, "nl80211: Sending operstate IFLA failed:"
375 " %s (assume operstate is not supported)",
379 return ret
< 0 ? -1 : 0;
383 static int wpa_driver_nl80211_get_bssid(void *priv
, u8
*bssid
)
385 struct wpa_driver_nl80211_data
*drv
= priv
;
386 if (!drv
->associated
)
388 os_memcpy(bssid
, drv
->bssid
, ETH_ALEN
);
393 static int wpa_driver_nl80211_get_ssid(void *priv
, u8
*ssid
)
395 struct wpa_driver_nl80211_data
*drv
= priv
;
396 if (!drv
->associated
)
398 os_memcpy(ssid
, drv
->ssid
, drv
->ssid_len
);
399 return drv
->ssid_len
;
405 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data
*drv
,
406 void *ctx
, char *buf
, size_t len
,
409 union wpa_event_data event
;
411 os_memset(&event
, 0, sizeof(event
));
412 if (len
> sizeof(event
.interface_status
.ifname
))
413 len
= sizeof(event
.interface_status
.ifname
) - 1;
414 os_memcpy(event
.interface_status
.ifname
, buf
, len
);
415 event
.interface_status
.ievent
= del
? EVENT_INTERFACE_REMOVED
:
416 EVENT_INTERFACE_ADDED
;
418 wpa_printf(MSG_DEBUG
, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
420 event
.interface_status
.ifname
,
421 del
? "removed" : "added");
423 if (os_strcmp(drv
->ifname
, event
.interface_status
.ifname
) == 0) {
430 wpa_supplicant_event(ctx
, EVENT_INTERFACE_STATUS
, &event
);
434 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data
*drv
,
437 struct ifinfomsg
*ifi
;
438 int attrlen
, _nlmsg_len
, rta_len
;
443 _nlmsg_len
= NLMSG_ALIGN(sizeof(struct ifinfomsg
));
445 attrlen
= h
->nlmsg_len
- _nlmsg_len
;
449 attr
= (struct rtattr
*) (((char *) ifi
) + _nlmsg_len
);
451 rta_len
= RTA_ALIGN(sizeof(struct rtattr
));
452 while (RTA_OK(attr
, attrlen
)) {
453 if (attr
->rta_type
== IFLA_IFNAME
) {
454 if (os_strcmp(((char *) attr
) + rta_len
, drv
->ifname
)
460 attr
= RTA_NEXT(attr
, attrlen
);
467 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data
*drv
,
468 int ifindex
, struct nlmsghdr
*h
)
470 if (drv
->ifindex
== ifindex
)
473 if (drv
->if_removed
&& wpa_driver_nl80211_own_ifname(drv
, h
)) {
474 drv
->ifindex
= if_nametoindex(drv
->ifname
);
475 wpa_printf(MSG_DEBUG
, "nl80211: Update ifindex for a removed "
477 wpa_driver_nl80211_finish_drv_init(drv
);
485 static void wpa_driver_nl80211_event_rtm_newlink(struct wpa_driver_nl80211_data
*drv
,
486 void *ctx
, struct nlmsghdr
*h
,
489 struct ifinfomsg
*ifi
;
490 int attrlen
, _nlmsg_len
, rta_len
;
491 struct rtattr
* attr
;
493 if (len
< sizeof(*ifi
))
498 if (!wpa_driver_nl80211_own_ifindex(drv
, ifi
->ifi_index
, h
)) {
499 wpa_printf(MSG_DEBUG
, "Ignore event for foreign ifindex %d",
504 wpa_printf(MSG_DEBUG
, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
506 drv
->operstate
, ifi
->ifi_flags
,
507 (ifi
->ifi_flags
& IFF_UP
) ? "[UP]" : "",
508 (ifi
->ifi_flags
& IFF_RUNNING
) ? "[RUNNING]" : "",
509 (ifi
->ifi_flags
& IFF_LOWER_UP
) ? "[LOWER_UP]" : "",
510 (ifi
->ifi_flags
& IFF_DORMANT
) ? "[DORMANT]" : "");
512 * Some drivers send the association event before the operup event--in
513 * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
514 * fails. This will hit us when wpa_supplicant does not need to do
515 * IEEE 802.1X authentication
517 if (drv
->operstate
== 1 &&
518 (ifi
->ifi_flags
& (IFF_LOWER_UP
| IFF_DORMANT
)) == IFF_LOWER_UP
&&
519 !(ifi
->ifi_flags
& IFF_RUNNING
))
520 wpa_driver_nl80211_send_oper_ifla(drv
, -1, IF_OPER_UP
);
522 _nlmsg_len
= NLMSG_ALIGN(sizeof(struct ifinfomsg
));
524 attrlen
= h
->nlmsg_len
- _nlmsg_len
;
528 attr
= (struct rtattr
*) (((char *) ifi
) + _nlmsg_len
);
530 rta_len
= RTA_ALIGN(sizeof(struct rtattr
));
531 while (RTA_OK(attr
, attrlen
)) {
532 if (attr
->rta_type
== IFLA_IFNAME
) {
533 wpa_driver_nl80211_event_link(
535 ((char *) attr
) + rta_len
,
536 attr
->rta_len
- rta_len
, 0);
538 attr
= RTA_NEXT(attr
, attrlen
);
543 static void wpa_driver_nl80211_event_rtm_dellink(struct wpa_driver_nl80211_data
*drv
,
544 void *ctx
, struct nlmsghdr
*h
,
547 struct ifinfomsg
*ifi
;
548 int attrlen
, _nlmsg_len
, rta_len
;
549 struct rtattr
* attr
;
551 if (len
< sizeof(*ifi
))
556 _nlmsg_len
= NLMSG_ALIGN(sizeof(struct ifinfomsg
));
558 attrlen
= h
->nlmsg_len
- _nlmsg_len
;
562 attr
= (struct rtattr
*) (((char *) ifi
) + _nlmsg_len
);
564 rta_len
= RTA_ALIGN(sizeof(struct rtattr
));
565 while (RTA_OK(attr
, attrlen
)) {
566 if (attr
->rta_type
== IFLA_IFNAME
) {
567 wpa_driver_nl80211_event_link(
569 ((char *) attr
) + rta_len
,
570 attr
->rta_len
- rta_len
, 1);
572 attr
= RTA_NEXT(attr
, attrlen
);
577 static void wpa_driver_nl80211_event_receive_link(int sock
, void *eloop_ctx
,
582 struct sockaddr_nl from
;
588 fromlen
= sizeof(from
);
589 left
= recvfrom(sock
, buf
, sizeof(buf
), MSG_DONTWAIT
,
590 (struct sockaddr
*) &from
, &fromlen
);
592 if (errno
!= EINTR
&& errno
!= EAGAIN
)
593 perror("recvfrom(netlink)");
597 h
= (struct nlmsghdr
*) buf
;
598 while (left
>= (int) sizeof(*h
)) {
602 plen
= len
- sizeof(*h
);
603 if (len
> left
|| plen
< 0) {
604 wpa_printf(MSG_DEBUG
, "Malformed netlink message: "
605 "len=%d left=%d plen=%d",
610 switch (h
->nlmsg_type
) {
612 wpa_driver_nl80211_event_rtm_newlink(eloop_ctx
, sock_ctx
,
616 wpa_driver_nl80211_event_rtm_dellink(eloop_ctx
, sock_ctx
,
621 len
= NLMSG_ALIGN(len
);
623 h
= (struct nlmsghdr
*) ((char *) h
+ len
);
627 wpa_printf(MSG_DEBUG
, "%d extra bytes in the end of netlink "
631 if (--max_events
> 0) {
633 * Try to receive all events in one eloop call in order to
634 * limit race condition on cases where AssocInfo event, Assoc
635 * event, and EAPOL frames are received more or less at the
636 * same time. We want to process the event messages first
637 * before starting EAPOL processing.
646 static void mlme_event_auth(struct wpa_driver_nl80211_data
*drv
,
647 const u8
*frame
, size_t len
)
649 const struct ieee80211_mgmt
*mgmt
;
650 union wpa_event_data event
;
652 mgmt
= (const struct ieee80211_mgmt
*) frame
;
653 if (len
< 24 + sizeof(mgmt
->u
.auth
)) {
654 wpa_printf(MSG_DEBUG
, "nl80211: Too short association event "
659 os_memcpy(drv
->auth_bssid
, mgmt
->sa
, ETH_ALEN
);
660 os_memset(&event
, 0, sizeof(event
));
661 os_memcpy(event
.auth
.peer
, mgmt
->sa
, ETH_ALEN
);
662 event
.auth
.auth_type
= le_to_host16(mgmt
->u
.auth
.auth_alg
);
663 event
.auth
.status_code
= le_to_host16(mgmt
->u
.auth
.status_code
);
664 if (len
> 24 + sizeof(mgmt
->u
.auth
)) {
665 event
.auth
.ies
= mgmt
->u
.auth
.variable
;
666 event
.auth
.ies_len
= len
- 24 - sizeof(mgmt
->u
.auth
);
669 wpa_supplicant_event(drv
->ctx
, EVENT_AUTH
, &event
);
673 static void mlme_event_assoc(struct wpa_driver_nl80211_data
*drv
,
674 const u8
*frame
, size_t len
)
676 const struct ieee80211_mgmt
*mgmt
;
677 union wpa_event_data event
;
680 mgmt
= (const struct ieee80211_mgmt
*) frame
;
681 if (len
< 24 + sizeof(mgmt
->u
.assoc_resp
)) {
682 wpa_printf(MSG_DEBUG
, "nl80211: Too short association event "
687 status
= le_to_host16(mgmt
->u
.assoc_resp
.status_code
);
688 if (status
!= WLAN_STATUS_SUCCESS
) {
689 os_memset(&event
, 0, sizeof(event
));
690 if (len
> 24 + sizeof(mgmt
->u
.assoc_resp
)) {
691 event
.assoc_reject
.resp_ies
=
692 (u8
*) mgmt
->u
.assoc_resp
.variable
;
693 event
.assoc_reject
.resp_ies_len
=
694 len
- 24 - sizeof(mgmt
->u
.assoc_resp
);
696 event
.assoc_reject
.status_code
= status
;
698 wpa_supplicant_event(drv
->ctx
, EVENT_ASSOC_REJECT
, &event
);
703 os_memcpy(drv
->bssid
, mgmt
->sa
, ETH_ALEN
);
705 os_memset(&event
, 0, sizeof(event
));
706 if (len
> 24 + sizeof(mgmt
->u
.assoc_resp
)) {
707 event
.assoc_info
.resp_ies
= (u8
*) mgmt
->u
.assoc_resp
.variable
;
708 event
.assoc_info
.resp_ies_len
=
709 len
- 24 - sizeof(mgmt
->u
.assoc_resp
);
712 wpa_supplicant_event(drv
->ctx
, EVENT_ASSOC
, &event
);
716 static void mlme_event_connect(struct wpa_driver_nl80211_data
*drv
,
717 enum nl80211_commands cmd
, struct nlattr
*status
,
718 struct nlattr
*addr
, struct nlattr
*req_ie
,
719 struct nlattr
*resp_ie
)
721 union wpa_event_data event
;
723 if (drv
->capa
.flags
& WPA_DRIVER_FLAGS_SME
) {
725 * Avoid reporting two association events that would confuse
728 wpa_printf(MSG_DEBUG
, "nl80211: Ignore connect event (cmd=%d) "
729 "when using userspace SME", cmd
);
733 os_memset(&event
, 0, sizeof(event
));
734 if (cmd
== NL80211_CMD_CONNECT
&&
735 nla_get_u16(status
) != WLAN_STATUS_SUCCESS
) {
737 event
.assoc_reject
.resp_ies
= nla_data(resp_ie
);
738 event
.assoc_reject
.resp_ies_len
= nla_len(resp_ie
);
740 event
.assoc_reject
.status_code
= nla_get_u16(status
);
741 wpa_supplicant_event(drv
->ctx
, EVENT_ASSOC_REJECT
, &event
);
747 os_memcpy(drv
->bssid
, nla_data(addr
), ETH_ALEN
);
750 event
.assoc_info
.req_ies
= nla_data(req_ie
);
751 event
.assoc_info
.req_ies_len
= nla_len(req_ie
);
754 event
.assoc_info
.resp_ies
= nla_data(resp_ie
);
755 event
.assoc_info
.resp_ies_len
= nla_len(resp_ie
);
758 wpa_supplicant_event(drv
->ctx
, EVENT_ASSOC
, &event
);
762 static void mlme_timeout_event(struct wpa_driver_nl80211_data
*drv
,
763 enum nl80211_commands cmd
, struct nlattr
*addr
)
765 union wpa_event_data event
;
766 enum wpa_event_type ev
;
768 if (nla_len(addr
) != ETH_ALEN
)
771 wpa_printf(MSG_DEBUG
, "nl80211: MLME event %d; timeout with " MACSTR
,
772 cmd
, MAC2STR((u8
*) nla_data(addr
)));
774 if (cmd
== NL80211_CMD_AUTHENTICATE
)
775 ev
= EVENT_AUTH_TIMED_OUT
;
776 else if (cmd
== NL80211_CMD_ASSOCIATE
)
777 ev
= EVENT_ASSOC_TIMED_OUT
;
781 os_memset(&event
, 0, sizeof(event
));
782 os_memcpy(event
.timeout_event
.addr
, nla_data(addr
), ETH_ALEN
);
783 wpa_supplicant_event(drv
->ctx
, ev
, &event
);
787 static void mlme_event(struct wpa_driver_nl80211_data
*drv
,
788 enum nl80211_commands cmd
, struct nlattr
*frame
,
789 struct nlattr
*addr
, struct nlattr
*timed_out
)
791 if (timed_out
&& addr
) {
792 mlme_timeout_event(drv
, cmd
, addr
);
797 wpa_printf(MSG_DEBUG
, "nl80211: MLME event %d without frame "
802 wpa_printf(MSG_DEBUG
, "nl80211: MLME event %d", cmd
);
803 wpa_hexdump(MSG_MSGDUMP
, "nl80211: MLME event frame",
804 nla_data(frame
), nla_len(frame
));
807 case NL80211_CMD_AUTHENTICATE
:
808 mlme_event_auth(drv
, nla_data(frame
), nla_len(frame
));
810 case NL80211_CMD_ASSOCIATE
:
811 mlme_event_assoc(drv
, nla_data(frame
), nla_len(frame
));
813 case NL80211_CMD_DEAUTHENTICATE
:
815 wpa_supplicant_event(drv
->ctx
, EVENT_DEAUTH
, NULL
);
817 case NL80211_CMD_DISASSOCIATE
:
819 wpa_supplicant_event(drv
->ctx
, EVENT_DISASSOC
, NULL
);
827 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data
*drv
,
830 union wpa_event_data data
;
832 wpa_printf(MSG_DEBUG
, "nl80211: MLME event Michael MIC failure");
833 os_memset(&data
, 0, sizeof(data
));
834 if (tb
[NL80211_ATTR_MAC
]) {
835 wpa_hexdump(MSG_DEBUG
, "nl80211: Source MAC address",
836 nla_data(tb
[NL80211_ATTR_MAC
]),
837 nla_len(tb
[NL80211_ATTR_MAC
]));
838 data
.michael_mic_failure
.src
= nla_data(tb
[NL80211_ATTR_MAC
]);
840 if (tb
[NL80211_ATTR_KEY_SEQ
]) {
841 wpa_hexdump(MSG_DEBUG
, "nl80211: TSC",
842 nla_data(tb
[NL80211_ATTR_KEY_SEQ
]),
843 nla_len(tb
[NL80211_ATTR_KEY_SEQ
]));
845 if (tb
[NL80211_ATTR_KEY_TYPE
]) {
846 enum nl80211_key_type key_type
=
847 nla_get_u32(tb
[NL80211_ATTR_KEY_TYPE
]);
848 wpa_printf(MSG_DEBUG
, "nl80211: Key Type %d", key_type
);
849 if (key_type
== NL80211_KEYTYPE_PAIRWISE
)
850 data
.michael_mic_failure
.unicast
= 1;
852 data
.michael_mic_failure
.unicast
= 1;
854 if (tb
[NL80211_ATTR_KEY_IDX
]) {
855 u8 key_id
= nla_get_u8(tb
[NL80211_ATTR_KEY_IDX
]);
856 wpa_printf(MSG_DEBUG
, "nl80211: Key Id %d", key_id
);
859 wpa_supplicant_event(drv
->ctx
, EVENT_MICHAEL_MIC_FAILURE
, &data
);
863 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data
*drv
,
866 if (tb
[NL80211_ATTR_MAC
] == NULL
) {
867 wpa_printf(MSG_DEBUG
, "nl80211: No address in IBSS joined "
871 os_memcpy(drv
->bssid
, nla_data(tb
[NL80211_ATTR_MAC
]), ETH_ALEN
);
873 wpa_printf(MSG_DEBUG
, "nl80211: IBSS " MACSTR
" joined",
874 MAC2STR(drv
->bssid
));
876 wpa_supplicant_event(drv
->ctx
, EVENT_ASSOC
, NULL
);
880 static int process_event(struct nl_msg
*msg
, void *arg
)
882 struct wpa_driver_nl80211_data
*drv
= arg
;
883 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
884 struct nlattr
*tb
[NL80211_ATTR_MAX
+ 1];
886 nla_parse(tb
, NL80211_ATTR_MAX
, genlmsg_attrdata(gnlh
, 0),
887 genlmsg_attrlen(gnlh
, 0), NULL
);
889 if (tb
[NL80211_ATTR_IFINDEX
]) {
890 int ifindex
= nla_get_u32(tb
[NL80211_ATTR_IFINDEX
]);
891 if (ifindex
!= drv
->ifindex
) {
892 wpa_printf(MSG_DEBUG
, "nl80211: Ignored event (cmd=%d)"
893 " for foreign interface (ifindex %d)",
899 if (drv
->ap_scan_as_station
&&
900 (gnlh
->cmd
== NL80211_CMD_NEW_SCAN_RESULTS
||
901 gnlh
->cmd
== NL80211_CMD_SCAN_ABORTED
)) {
902 wpa_driver_nl80211_set_mode(drv
, IEEE80211_MODE_AP
);
903 drv
->ap_scan_as_station
= 0;
907 case NL80211_CMD_TRIGGER_SCAN
:
908 wpa_printf(MSG_DEBUG
, "nl80211: Scan trigger");
910 case NL80211_CMD_NEW_SCAN_RESULTS
:
911 wpa_printf(MSG_DEBUG
, "nl80211: New scan results available");
912 drv
->scan_complete_events
= 1;
913 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout
, drv
,
915 wpa_supplicant_event(drv
->ctx
, EVENT_SCAN_RESULTS
, NULL
);
917 case NL80211_CMD_SCAN_ABORTED
:
918 wpa_printf(MSG_DEBUG
, "nl80211: Scan aborted");
920 * Need to indicate that scan results are available in order
921 * not to make wpa_supplicant stop its scanning.
923 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout
, drv
,
925 wpa_supplicant_event(drv
->ctx
, EVENT_SCAN_RESULTS
, NULL
);
927 case NL80211_CMD_AUTHENTICATE
:
928 case NL80211_CMD_ASSOCIATE
:
929 case NL80211_CMD_DEAUTHENTICATE
:
930 case NL80211_CMD_DISASSOCIATE
:
931 mlme_event(drv
, gnlh
->cmd
, tb
[NL80211_ATTR_FRAME
],
932 tb
[NL80211_ATTR_MAC
], tb
[NL80211_ATTR_TIMED_OUT
]);
934 case NL80211_CMD_CONNECT
:
935 case NL80211_CMD_ROAM
:
936 mlme_event_connect(drv
, gnlh
->cmd
,
937 tb
[NL80211_ATTR_STATUS_CODE
],
938 tb
[NL80211_ATTR_MAC
],
939 tb
[NL80211_ATTR_REQ_IE
],
940 tb
[NL80211_ATTR_RESP_IE
]);
942 case NL80211_CMD_DISCONNECT
:
943 if (drv
->capa
.flags
& WPA_DRIVER_FLAGS_SME
) {
945 * Avoid reporting two disassociation events that could
946 * confuse the core code.
948 wpa_printf(MSG_DEBUG
, "nl80211: Ignore disconnect "
949 "event when using userspace SME");
953 wpa_supplicant_event(drv
->ctx
, EVENT_DISASSOC
, NULL
);
955 case NL80211_CMD_MICHAEL_MIC_FAILURE
:
956 mlme_event_michael_mic_failure(drv
, tb
);
958 case NL80211_CMD_JOIN_IBSS
:
959 mlme_event_join_ibss(drv
, tb
);
962 wpa_printf(MSG_DEBUG
, "nl80211: Ignored unknown event "
963 "(cmd=%d)", gnlh
->cmd
);
971 static void wpa_driver_nl80211_event_receive(int sock
, void *eloop_ctx
,
975 struct wpa_driver_nl80211_data
*drv
= eloop_ctx
;
977 wpa_printf(MSG_DEBUG
, "nl80211: Event message available");
979 cb
= nl_cb_clone(drv
->nl_cb
);
982 nl_cb_set(cb
, NL_CB_SEQ_CHECK
, NL_CB_CUSTOM
, no_seq_check
, NULL
);
983 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, process_event
, drv
);
984 nl_recvmsgs(drv
->nl_handle_event
, cb
);
989 static int hostapd_set_iface_flags(struct wpa_driver_nl80211_data
*drv
,
990 const char *ifname
, int dev_up
)
994 if (drv
->ioctl_sock
< 0)
997 os_memset(&ifr
, 0, sizeof(ifr
));
998 os_strlcpy(ifr
.ifr_name
, ifname
, IFNAMSIZ
);
1000 if (ioctl(drv
->ioctl_sock
, SIOCGIFFLAGS
, &ifr
) != 0) {
1001 perror("ioctl[SIOCGIFFLAGS]");
1002 wpa_printf(MSG_DEBUG
, "Could not read interface flags (%s)",
1008 if (ifr
.ifr_flags
& IFF_UP
)
1010 ifr
.ifr_flags
|= IFF_UP
;
1012 if (!(ifr
.ifr_flags
& IFF_UP
))
1014 ifr
.ifr_flags
&= ~IFF_UP
;
1017 if (ioctl(drv
->ioctl_sock
, SIOCSIFFLAGS
, &ifr
) != 0) {
1018 perror("ioctl[SIOCSIFFLAGS]");
1027 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
1028 * @priv: driver_nl80211 private data
1029 * @alpha2_arg: country to which to switch to
1030 * Returns: 0 on success, -1 on failure
1032 * This asks nl80211 to set the regulatory domain for given
1033 * country ISO / IEC alpha2.
1035 static int wpa_driver_nl80211_set_country(void *priv
, const char *alpha2_arg
)
1037 struct wpa_driver_nl80211_data
*drv
= priv
;
1041 msg
= nlmsg_alloc();
1045 alpha2
[0] = alpha2_arg
[0];
1046 alpha2
[1] = alpha2_arg
[1];
1049 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0,
1050 0, NL80211_CMD_REQ_SET_REG
, 0);
1052 NLA_PUT_STRING(msg
, NL80211_ATTR_REG_ALPHA2
, alpha2
);
1053 if (send_and_recv_msgs(drv
, msg
, NULL
, NULL
))
1062 struct wiphy_info_data
{
1066 int connect_supported
;
1070 static int wiphy_info_handler(struct nl_msg
*msg
, void *arg
)
1072 struct nlattr
*tb
[NL80211_ATTR_MAX
+ 1];
1073 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
1074 struct wiphy_info_data
*info
= arg
;
1076 nla_parse(tb
, NL80211_ATTR_MAX
, genlmsg_attrdata(gnlh
, 0),
1077 genlmsg_attrlen(gnlh
, 0), NULL
);
1079 if (tb
[NL80211_ATTR_MAX_NUM_SCAN_SSIDS
])
1080 info
->max_scan_ssids
=
1081 nla_get_u8(tb
[NL80211_ATTR_MAX_NUM_SCAN_SSIDS
]);
1083 if (tb
[NL80211_ATTR_SUPPORTED_IFTYPES
]) {
1084 struct nlattr
*nl_mode
;
1086 nla_for_each_nested(nl_mode
,
1087 tb
[NL80211_ATTR_SUPPORTED_IFTYPES
], i
) {
1088 if (nl_mode
->nla_type
== NL80211_IFTYPE_AP
) {
1089 info
->ap_supported
= 1;
1095 if (tb
[NL80211_ATTR_SUPPORTED_COMMANDS
]) {
1096 struct nlattr
*nl_cmd
;
1099 nla_for_each_nested(nl_cmd
,
1100 tb
[NL80211_ATTR_SUPPORTED_COMMANDS
], i
) {
1101 u32 cmd
= nla_get_u32(nl_cmd
);
1102 if (cmd
== NL80211_CMD_AUTHENTICATE
)
1103 info
->auth_supported
= 1;
1104 else if (cmd
== NL80211_CMD_CONNECT
)
1105 info
->connect_supported
= 1;
1113 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data
*drv
,
1114 struct wiphy_info_data
*info
)
1118 os_memset(info
, 0, sizeof(*info
));
1119 msg
= nlmsg_alloc();
1123 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0,
1124 0, NL80211_CMD_GET_WIPHY
, 0);
1126 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, drv
->ifindex
);
1128 if (send_and_recv_msgs(drv
, msg
, wiphy_info_handler
, info
) == 0)
1137 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data
*drv
)
1139 struct wiphy_info_data info
;
1140 if (wpa_driver_nl80211_get_info(drv
, &info
))
1142 drv
->has_capability
= 1;
1143 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1144 drv
->capa
.key_mgmt
= WPA_DRIVER_CAPA_KEY_MGMT_WPA
|
1145 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK
|
1146 WPA_DRIVER_CAPA_KEY_MGMT_WPA2
|
1147 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK
;
1148 drv
->capa
.enc
= WPA_DRIVER_CAPA_ENC_WEP40
|
1149 WPA_DRIVER_CAPA_ENC_WEP104
|
1150 WPA_DRIVER_CAPA_ENC_TKIP
|
1151 WPA_DRIVER_CAPA_ENC_CCMP
;
1153 drv
->capa
.max_scan_ssids
= info
.max_scan_ssids
;
1154 if (info
.ap_supported
)
1155 drv
->capa
.flags
|= WPA_DRIVER_FLAGS_AP
;
1157 if (info
.auth_supported
)
1158 drv
->capa
.flags
|= WPA_DRIVER_FLAGS_SME
;
1159 else if (!info
.connect_supported
) {
1160 wpa_printf(MSG_INFO
, "nl80211: Driver does not support "
1161 "authentication/association or connect commands");
1165 drv
->capa
.flags
|= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE
;
1169 #endif /* HOSTAPD */
1172 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data
*drv
,
1177 /* Initialize generic netlink and nl80211 */
1179 drv
->nl_cb
= nl_cb_alloc(NL_CB_DEFAULT
);
1180 if (drv
->nl_cb
== NULL
) {
1181 wpa_printf(MSG_ERROR
, "nl80211: Failed to allocate netlink "
1186 drv
->nl_handle
= nl_handle_alloc_cb(drv
->nl_cb
);
1187 if (drv
->nl_handle
== NULL
) {
1188 wpa_printf(MSG_ERROR
, "nl80211: Failed to allocate netlink "
1193 drv
->nl_handle_event
= nl_handle_alloc_cb(drv
->nl_cb
);
1194 if (drv
->nl_handle_event
== NULL
) {
1195 wpa_printf(MSG_ERROR
, "nl80211: Failed to allocate netlink "
1196 "callbacks (event)");
1200 if (genl_connect(drv
->nl_handle
)) {
1201 wpa_printf(MSG_ERROR
, "nl80211: Failed to connect to generic "
1206 if (genl_connect(drv
->nl_handle_event
)) {
1207 wpa_printf(MSG_ERROR
, "nl80211: Failed to connect to generic "
1212 #ifdef CONFIG_LIBNL20
1213 if (genl_ctrl_alloc_cache(drv
->nl_handle
, &drv
->nl_cache
) < 0) {
1214 wpa_printf(MSG_ERROR
, "nl80211: Failed to allocate generic "
1218 if (genl_ctrl_alloc_cache(drv
->nl_handle_event
, &drv
->nl_cache_event
) <
1220 wpa_printf(MSG_ERROR
, "nl80211: Failed to allocate generic "
1221 "netlink cache (event)");
1224 #else /* CONFIG_LIBNL20 */
1225 drv
->nl_cache
= genl_ctrl_alloc_cache(drv
->nl_handle
);
1226 if (drv
->nl_cache
== NULL
) {
1227 wpa_printf(MSG_ERROR
, "nl80211: Failed to allocate generic "
1231 drv
->nl_cache_event
= genl_ctrl_alloc_cache(drv
->nl_handle_event
);
1232 if (drv
->nl_cache_event
== NULL
) {
1233 wpa_printf(MSG_ERROR
, "nl80211: Failed to allocate generic "
1234 "netlink cache (event)");
1237 #endif /* CONFIG_LIBNL20 */
1239 drv
->nl80211
= genl_ctrl_search_by_name(drv
->nl_cache
, "nl80211");
1240 if (drv
->nl80211
== NULL
) {
1241 wpa_printf(MSG_ERROR
, "nl80211: 'nl80211' generic netlink not "
1246 ret
= nl_get_multicast_id(drv
, "nl80211", "scan");
1248 ret
= nl_socket_add_membership(drv
->nl_handle_event
, ret
);
1250 wpa_printf(MSG_ERROR
, "nl80211: Could not add multicast "
1251 "membership for scan events: %d (%s)",
1252 ret
, strerror(-ret
));
1256 ret
= nl_get_multicast_id(drv
, "nl80211", "mlme");
1258 ret
= nl_socket_add_membership(drv
->nl_handle_event
, ret
);
1260 wpa_printf(MSG_ERROR
, "nl80211: Could not add multicast "
1261 "membership for mlme events: %d (%s)",
1262 ret
, strerror(-ret
));
1266 eloop_register_read_sock(nl_socket_get_fd(drv
->nl_handle_event
),
1267 wpa_driver_nl80211_event_receive
, drv
, ctx
);
1272 nl_cache_free(drv
->nl_cache_event
);
1274 nl_cache_free(drv
->nl_cache
);
1276 nl_handle_destroy(drv
->nl_handle_event
);
1278 nl_handle_destroy(drv
->nl_handle
);
1280 nl_cb_put(drv
->nl_cb
);
1286 static int wpa_driver_nl80211_init_link_events(
1287 struct wpa_driver_nl80211_data
*drv
)
1293 struct sockaddr_nl local
;
1295 s
= socket(PF_NETLINK
, SOCK_RAW
, NETLINK_ROUTE
);
1297 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
1301 os_memset(&local
, 0, sizeof(local
));
1302 local
.nl_family
= AF_NETLINK
;
1303 local
.nl_groups
= RTMGRP_LINK
;
1304 if (bind(s
, (struct sockaddr
*) &local
, sizeof(local
)) < 0) {
1305 perror("bind(netlink)");
1310 eloop_register_read_sock(s
, wpa_driver_nl80211_event_receive_link
, drv
,
1312 drv
->link_event_sock
= s
;
1315 #endif /* HOSTAPD */
1320 * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1321 * @ctx: context to be used when calling wpa_supplicant functions,
1322 * e.g., wpa_supplicant_event()
1323 * @ifname: interface name, e.g., wlan0
1324 * Returns: Pointer to private data, %NULL on failure
1326 static void * wpa_driver_nl80211_init(void *ctx
, const char *ifname
)
1328 struct wpa_driver_nl80211_data
*drv
;
1330 drv
= os_zalloc(sizeof(*drv
));
1334 os_strlcpy(drv
->ifname
, ifname
, sizeof(drv
->ifname
));
1335 drv
->monitor_ifidx
= -1;
1336 drv
->monitor_sock
= -1;
1337 drv
->link_event_sock
= -1;
1338 drv
->ioctl_sock
= -1;
1340 if (wpa_driver_nl80211_init_nl(drv
, ctx
)) {
1345 drv
->ioctl_sock
= socket(PF_INET
, SOCK_DGRAM
, 0);
1346 if (drv
->ioctl_sock
< 0) {
1347 perror("socket(PF_INET,SOCK_DGRAM)");
1351 if (wpa_driver_nl80211_init_link_events(drv
) ||
1352 wpa_driver_nl80211_finish_drv_init(drv
))
1358 if (drv
->link_event_sock
>= 0) {
1359 eloop_unregister_read_sock(drv
->link_event_sock
);
1360 close(drv
->link_event_sock
);
1362 if (drv
->ioctl_sock
>= 0)
1363 close(drv
->ioctl_sock
);
1365 genl_family_put(drv
->nl80211
);
1366 nl_cache_free(drv
->nl_cache
);
1367 nl_handle_destroy(drv
->nl_handle
);
1368 nl_cb_put(drv
->nl_cb
);
1376 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data
*drv
)
1378 drv
->ifindex
= if_nametoindex(drv
->ifname
);
1381 if (wpa_driver_nl80211_set_mode(drv
, IEEE80211_MODE_INFRA
) < 0) {
1382 wpa_printf(MSG_DEBUG
, "nl80211: Could not configure driver to "
1383 "use managed mode");
1386 if (hostapd_set_iface_flags(drv
, drv
->ifname
, 1)) {
1387 wpa_printf(MSG_ERROR
, "Could not set interface '%s' "
1392 if (wpa_driver_nl80211_capa(drv
))
1395 wpa_driver_nl80211_send_oper_ifla(drv
, 1, IF_OPER_DORMANT
);
1396 #endif /* HOSTAPD */
1403 static void wpa_driver_nl80211_free_bss(struct wpa_driver_nl80211_data
*drv
)
1405 struct i802_bss
*bss
, *prev
;
1406 bss
= drv
->bss
.next
;
1413 #endif /* HOSTAPD */
1416 #if defined(CONFIG_AP) || defined(HOSTAPD)
1417 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data
*drv
)
1421 msg
= nlmsg_alloc();
1425 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0,
1426 0, NL80211_CMD_DEL_BEACON
, 0);
1427 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, drv
->ifindex
);
1429 return send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
1433 #endif /* CONFIG_AP || HOSTAPD */
1437 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1438 * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1440 * Shut down driver interface and processing of driver events. Free
1441 * private data buffer if one was allocated in wpa_driver_nl80211_init().
1443 static void wpa_driver_nl80211_deinit(void *priv
)
1445 struct wpa_driver_nl80211_data
*drv
= priv
;
1447 #if defined(CONFIG_AP) || defined(HOSTAPD)
1448 nl80211_remove_monitor_interface(drv
);
1449 if (drv
->monitor_sock
>= 0) {
1450 eloop_unregister_read_sock(drv
->monitor_sock
);
1451 close(drv
->monitor_sock
);
1454 if (drv
->nlmode
== NL80211_IFTYPE_AP
)
1455 wpa_driver_nl80211_del_beacon(drv
);
1456 #endif /* CONFIG_AP || HOSTAPD */
1459 if (drv
->last_freq_ht
) {
1460 /* Clear HT flags from the driver */
1461 struct hostapd_freq_params freq
;
1462 os_memset(&freq
, 0, sizeof(freq
));
1463 freq
.freq
= drv
->last_freq
;
1464 i802_set_freq(priv
, &freq
);
1467 if (drv
->eapol_sock
>= 0) {
1468 eloop_unregister_read_sock(drv
->eapol_sock
);
1469 close(drv
->eapol_sock
);
1472 if (drv
->if_indices
!= drv
->default_if_indices
)
1473 os_free(drv
->if_indices
);
1475 wpa_driver_nl80211_free_bss(drv
);
1478 wpa_driver_nl80211_send_oper_ifla(priv
, 0, IF_OPER_UP
);
1480 if (drv
->link_event_sock
>= 0) {
1481 eloop_unregister_read_sock(drv
->link_event_sock
);
1482 close(drv
->link_event_sock
);
1484 #endif /* HOSTAPD */
1486 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout
, drv
, drv
->ctx
);
1488 (void) hostapd_set_iface_flags(drv
, drv
->ifname
, 0);
1489 wpa_driver_nl80211_set_mode(drv
, IEEE80211_MODE_INFRA
);
1491 if (drv
->ioctl_sock
>= 0)
1492 close(drv
->ioctl_sock
);
1494 eloop_unregister_read_sock(nl_socket_get_fd(drv
->nl_handle_event
));
1495 genl_family_put(drv
->nl80211
);
1496 nl_cache_free(drv
->nl_cache
);
1497 nl_cache_free(drv
->nl_cache_event
);
1498 nl_handle_destroy(drv
->nl_handle
);
1499 nl_handle_destroy(drv
->nl_handle_event
);
1500 nl_cb_put(drv
->nl_cb
);
1507 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1508 * @eloop_ctx: Driver private data
1509 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1511 * This function can be used as registered timeout when starting a scan to
1512 * generate a scan completed event if the driver does not report this.
1514 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx
, void *timeout_ctx
)
1516 struct wpa_driver_nl80211_data
*drv
= eloop_ctx
;
1517 if (drv
->ap_scan_as_station
) {
1518 wpa_driver_nl80211_set_mode(drv
, IEEE80211_MODE_AP
);
1519 drv
->ap_scan_as_station
= 0;
1521 wpa_printf(MSG_DEBUG
, "Scan timeout - try to get results");
1522 wpa_supplicant_event(timeout_ctx
, EVENT_SCAN_RESULTS
, NULL
);
1527 * wpa_driver_nl80211_scan - Request the driver to initiate scan
1528 * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1529 * @params: Scan parameters
1530 * Returns: 0 on success, -1 on failure
1532 static int wpa_driver_nl80211_scan(void *priv
,
1533 struct wpa_driver_scan_params
*params
)
1535 struct wpa_driver_nl80211_data
*drv
= priv
;
1536 int ret
= 0, timeout
;
1537 struct nl_msg
*msg
, *ssids
, *freqs
;
1540 msg
= nlmsg_alloc();
1541 ssids
= nlmsg_alloc();
1542 freqs
= nlmsg_alloc();
1543 if (!msg
|| !ssids
|| !freqs
) {
1550 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0, 0,
1551 NL80211_CMD_TRIGGER_SCAN
, 0);
1553 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, drv
->ifindex
);
1555 for (i
= 0; i
< params
->num_ssids
; i
++) {
1556 NLA_PUT(ssids
, i
+ 1, params
->ssids
[i
].ssid_len
,
1557 params
->ssids
[i
].ssid
);
1559 if (params
->num_ssids
)
1560 nla_put_nested(msg
, NL80211_ATTR_SCAN_SSIDS
, ssids
);
1562 if (params
->extra_ies
) {
1563 NLA_PUT(msg
, NL80211_ATTR_IE
, params
->extra_ies_len
,
1567 if (params
->freqs
) {
1568 for (i
= 0; params
->freqs
[i
]; i
++)
1569 NLA_PUT_U32(freqs
, i
+ 1, params
->freqs
[i
]);
1570 nla_put_nested(msg
, NL80211_ATTR_SCAN_FREQUENCIES
, freqs
);
1573 ret
= send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
1576 wpa_printf(MSG_DEBUG
, "nl80211: Scan trigger failed: ret=%d "
1577 "(%s)", ret
, strerror(-ret
));
1579 if (drv
->nlmode
== NL80211_IFTYPE_AP
) {
1581 * mac80211 does not allow scan requests in AP mode, so
1582 * try to do this in station mode.
1584 if (wpa_driver_nl80211_set_mode(drv
,
1585 IEEE80211_MODE_INFRA
))
1586 goto nla_put_failure
;
1588 if (wpa_driver_nl80211_scan(drv
, params
)) {
1589 wpa_driver_nl80211_set_mode(drv
,
1591 goto nla_put_failure
;
1594 /* Restore AP mode when processing scan results */
1595 drv
->ap_scan_as_station
= 1;
1598 goto nla_put_failure
;
1600 goto nla_put_failure
;
1601 #endif /* HOSTAPD */
1604 /* Not all drivers generate "scan completed" wireless event, so try to
1605 * read results after a timeout. */
1607 if (drv
->scan_complete_events
) {
1609 * The driver seems to deliver events to notify when scan is
1610 * complete, so use longer timeout to avoid race conditions
1611 * with scanning and following association request.
1615 wpa_printf(MSG_DEBUG
, "Scan requested (ret=%d) - scan timeout %d "
1616 "seconds", ret
, timeout
);
1617 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout
, drv
, drv
->ctx
);
1618 eloop_register_timeout(timeout
, 0, wpa_driver_nl80211_scan_timeout
,
1629 static int bss_info_handler(struct nl_msg
*msg
, void *arg
)
1631 struct nlattr
*tb
[NL80211_ATTR_MAX
+ 1];
1632 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
1633 struct nlattr
*bss
[NL80211_BSS_MAX
+ 1];
1634 static struct nla_policy bss_policy
[NL80211_BSS_MAX
+ 1] = {
1635 [NL80211_BSS_BSSID
] = { .type
= NLA_UNSPEC
},
1636 [NL80211_BSS_FREQUENCY
] = { .type
= NLA_U32
},
1637 [NL80211_BSS_TSF
] = { .type
= NLA_U64
},
1638 [NL80211_BSS_BEACON_INTERVAL
] = { .type
= NLA_U16
},
1639 [NL80211_BSS_CAPABILITY
] = { .type
= NLA_U16
},
1640 [NL80211_BSS_INFORMATION_ELEMENTS
] = { .type
= NLA_UNSPEC
},
1641 [NL80211_BSS_SIGNAL_MBM
] = { .type
= NLA_U32
},
1642 [NL80211_BSS_SIGNAL_UNSPEC
] = { .type
= NLA_U8
},
1643 [NL80211_BSS_STATUS
] = { .type
= NLA_U32
},
1644 [NL80211_BSS_SEEN_MS_AGO
] = { .type
= NLA_U32
},
1646 struct wpa_scan_results
*res
= arg
;
1647 struct wpa_scan_res
**tmp
;
1648 struct wpa_scan_res
*r
;
1652 nla_parse(tb
, NL80211_ATTR_MAX
, genlmsg_attrdata(gnlh
, 0),
1653 genlmsg_attrlen(gnlh
, 0), NULL
);
1654 if (!tb
[NL80211_ATTR_BSS
])
1656 if (nla_parse_nested(bss
, NL80211_BSS_MAX
, tb
[NL80211_ATTR_BSS
],
1659 if (bss
[NL80211_BSS_INFORMATION_ELEMENTS
]) {
1660 ie
= nla_data(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
1661 ie_len
= nla_len(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
1667 r
= os_zalloc(sizeof(*r
) + ie_len
);
1670 if (bss
[NL80211_BSS_BSSID
])
1671 os_memcpy(r
->bssid
, nla_data(bss
[NL80211_BSS_BSSID
]),
1673 if (bss
[NL80211_BSS_FREQUENCY
])
1674 r
->freq
= nla_get_u32(bss
[NL80211_BSS_FREQUENCY
]);
1675 if (bss
[NL80211_BSS_BEACON_INTERVAL
])
1676 r
->beacon_int
= nla_get_u16(bss
[NL80211_BSS_BEACON_INTERVAL
]);
1677 if (bss
[NL80211_BSS_CAPABILITY
])
1678 r
->caps
= nla_get_u16(bss
[NL80211_BSS_CAPABILITY
]);
1679 r
->flags
|= WPA_SCAN_NOISE_INVALID
;
1680 if (bss
[NL80211_BSS_SIGNAL_MBM
]) {
1681 r
->level
= nla_get_u32(bss
[NL80211_BSS_SIGNAL_MBM
]);
1682 r
->level
/= 100; /* mBm to dBm */
1683 r
->flags
|= WPA_SCAN_LEVEL_DBM
| WPA_SCAN_QUAL_INVALID
;
1684 } else if (bss
[NL80211_BSS_SIGNAL_UNSPEC
]) {
1685 r
->level
= nla_get_u8(bss
[NL80211_BSS_SIGNAL_UNSPEC
]);
1686 r
->flags
|= WPA_SCAN_LEVEL_INVALID
;
1688 r
->flags
|= WPA_SCAN_LEVEL_INVALID
| WPA_SCAN_QUAL_INVALID
;
1689 if (bss
[NL80211_BSS_TSF
])
1690 r
->tsf
= nla_get_u64(bss
[NL80211_BSS_TSF
]);
1691 if (bss
[NL80211_BSS_SEEN_MS_AGO
])
1692 r
->age
= nla_get_u32(bss
[NL80211_BSS_SEEN_MS_AGO
]);
1695 os_memcpy(r
+ 1, ie
, ie_len
);
1697 if (bss
[NL80211_BSS_STATUS
]) {
1698 enum nl80211_bss_status status
;
1699 status
= nla_get_u32(bss
[NL80211_BSS_STATUS
]);
1701 case NL80211_BSS_STATUS_AUTHENTICATED
:
1702 r
->flags
|= WPA_SCAN_AUTHENTICATED
;
1704 case NL80211_BSS_STATUS_ASSOCIATED
:
1705 r
->flags
|= WPA_SCAN_ASSOCIATED
;
1712 tmp
= os_realloc(res
->res
,
1713 (res
->num
+ 1) * sizeof(struct wpa_scan_res
*));
1718 tmp
[res
->num
++] = r
;
1725 static void clear_state_mismatch(struct wpa_driver_nl80211_data
*drv
,
1728 if (drv
->capa
.flags
& WPA_DRIVER_FLAGS_SME
) {
1729 wpa_printf(MSG_DEBUG
, "nl80211: Clear possible state "
1731 wpa_driver_nl80211_mlme(drv
, addr
,
1732 NL80211_CMD_DEAUTHENTICATE
,
1733 WLAN_REASON_PREV_AUTH_NOT_VALID
);
1738 static void wpa_driver_nl80211_check_bss_status(
1739 struct wpa_driver_nl80211_data
*drv
, struct wpa_scan_results
*res
)
1743 for (i
= 0; i
< res
->num
; i
++) {
1744 struct wpa_scan_res
*r
= res
->res
[i
];
1745 if (r
->flags
& WPA_SCAN_AUTHENTICATED
) {
1746 wpa_printf(MSG_DEBUG
, "nl80211: Scan results "
1747 "indicates BSS status with " MACSTR
1748 " as authenticated",
1750 if (drv
->nlmode
== NL80211_IFTYPE_STATION
&&
1751 os_memcmp(r
->bssid
, drv
->bssid
, ETH_ALEN
) != 0 &&
1752 os_memcmp(r
->bssid
, drv
->auth_bssid
, ETH_ALEN
) !=
1754 wpa_printf(MSG_DEBUG
, "nl80211: Unknown BSSID"
1755 " in local state (auth=" MACSTR
1756 " assoc=" MACSTR
")",
1757 MAC2STR(drv
->auth_bssid
),
1758 MAC2STR(drv
->bssid
));
1762 if (r
->flags
& WPA_SCAN_ASSOCIATED
) {
1763 wpa_printf(MSG_DEBUG
, "nl80211: Scan results "
1764 "indicate BSS status with " MACSTR
1767 if (drv
->nlmode
== NL80211_IFTYPE_STATION
&&
1769 wpa_printf(MSG_DEBUG
, "nl80211: Local state "
1770 "(not associated) does not match "
1772 clear_state_mismatch(drv
, r
->bssid
);
1773 } else if (drv
->nlmode
== NL80211_IFTYPE_STATION
&&
1774 os_memcmp(drv
->bssid
, r
->bssid
, ETH_ALEN
) !=
1776 wpa_printf(MSG_DEBUG
, "nl80211: Local state "
1777 "(associated with " MACSTR
") does "
1778 "not match with BSS state",
1779 MAC2STR(drv
->bssid
));
1780 clear_state_mismatch(drv
, r
->bssid
);
1781 clear_state_mismatch(drv
, drv
->bssid
);
1789 * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
1790 * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
1791 * Returns: Scan results on success, -1 on failure
1793 static struct wpa_scan_results
*
1794 wpa_driver_nl80211_get_scan_results(void *priv
)
1796 struct wpa_driver_nl80211_data
*drv
= priv
;
1798 struct wpa_scan_results
*res
;
1801 res
= os_zalloc(sizeof(*res
));
1804 msg
= nlmsg_alloc();
1806 goto nla_put_failure
;
1808 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0, NLM_F_DUMP
,
1809 NL80211_CMD_GET_SCAN
, 0);
1810 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, drv
->ifindex
);
1812 ret
= send_and_recv_msgs(drv
, msg
, bss_info_handler
, res
);
1815 wpa_printf(MSG_DEBUG
, "Received scan results (%lu BSSes)",
1816 (unsigned long) res
->num
);
1817 wpa_driver_nl80211_check_bss_status(drv
, res
);
1820 wpa_printf(MSG_DEBUG
, "nl80211: Scan result fetch failed: ret=%d "
1821 "(%s)", ret
, strerror(-ret
));
1824 wpa_scan_results_free(res
);
1829 static int wpa_driver_nl80211_set_key(const char *ifname
, void *priv
,
1830 wpa_alg alg
, const u8
*addr
, int key_idx
,
1832 const u8
*seq
, size_t seq_len
,
1833 const u8
*key
, size_t key_len
)
1835 struct wpa_driver_nl80211_data
*drv
= priv
;
1836 int ifindex
= if_nametoindex(ifname
);
1840 wpa_printf(MSG_DEBUG
, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
1841 "set_tx=%d seq_len=%lu key_len=%lu",
1842 __func__
, ifindex
, alg
, addr
, key_idx
, set_tx
,
1843 (unsigned long) seq_len
, (unsigned long) key_len
);
1845 msg
= nlmsg_alloc();
1849 if (alg
== WPA_ALG_NONE
) {
1850 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0,
1851 0, NL80211_CMD_DEL_KEY
, 0);
1853 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0,
1854 0, NL80211_CMD_NEW_KEY
, 0);
1855 NLA_PUT(msg
, NL80211_ATTR_KEY_DATA
, key_len
, key
);
1859 NLA_PUT_U32(msg
, NL80211_ATTR_KEY_CIPHER
,
1860 WLAN_CIPHER_SUITE_WEP40
);
1862 NLA_PUT_U32(msg
, NL80211_ATTR_KEY_CIPHER
,
1863 WLAN_CIPHER_SUITE_WEP104
);
1866 NLA_PUT_U32(msg
, NL80211_ATTR_KEY_CIPHER
,
1867 WLAN_CIPHER_SUITE_TKIP
);
1870 NLA_PUT_U32(msg
, NL80211_ATTR_KEY_CIPHER
,
1871 WLAN_CIPHER_SUITE_CCMP
);
1874 NLA_PUT_U32(msg
, NL80211_ATTR_KEY_CIPHER
,
1875 WLAN_CIPHER_SUITE_AES_CMAC
);
1878 wpa_printf(MSG_ERROR
, "%s: Unsupported encryption "
1879 "algorithm %d", __func__
, alg
);
1886 NLA_PUT(msg
, NL80211_ATTR_KEY_SEQ
, seq_len
, seq
);
1888 if (addr
&& os_memcmp(addr
, "\xff\xff\xff\xff\xff\xff", ETH_ALEN
) != 0)
1890 wpa_printf(MSG_DEBUG
, " addr=" MACSTR
, MAC2STR(addr
));
1891 NLA_PUT(msg
, NL80211_ATTR_MAC
, ETH_ALEN
, addr
);
1893 NLA_PUT_U8(msg
, NL80211_ATTR_KEY_IDX
, key_idx
);
1894 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, ifindex
);
1896 ret
= send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
1897 if (ret
== -ENOENT
&& alg
== WPA_ALG_NONE
)
1900 wpa_printf(MSG_DEBUG
, "nl80211: set_key failed; err=%d %s)",
1901 ret
, strerror(-ret
));
1904 * If we failed or don't need to set the default TX key (below),
1907 if (ret
|| !set_tx
|| alg
== WPA_ALG_NONE
)
1909 #ifdef HOSTAPD /* FIX: is this needed? */
1912 #endif /* HOSTAPD */
1914 msg
= nlmsg_alloc();
1918 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0,
1919 0, NL80211_CMD_SET_KEY
, 0);
1920 NLA_PUT_U8(msg
, NL80211_ATTR_KEY_IDX
, key_idx
);
1921 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, ifindex
);
1922 if (alg
== WPA_ALG_IGTK
)
1923 NLA_PUT_FLAG(msg
, NL80211_ATTR_KEY_DEFAULT_MGMT
);
1925 NLA_PUT_FLAG(msg
, NL80211_ATTR_KEY_DEFAULT
);
1927 ret
= send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
1931 wpa_printf(MSG_DEBUG
, "nl80211: set_key default failed; "
1932 "err=%d %s)", ret
, strerror(-ret
));
1940 static int nl_add_key(struct nl_msg
*msg
, wpa_alg alg
,
1941 int key_idx
, int defkey
,
1942 const u8
*seq
, size_t seq_len
,
1943 const u8
*key
, size_t key_len
)
1945 struct nlattr
*key_attr
= nla_nest_start(msg
, NL80211_ATTR_KEY
);
1949 if (defkey
&& alg
== WPA_ALG_IGTK
)
1950 NLA_PUT_FLAG(msg
, NL80211_KEY_DEFAULT_MGMT
);
1952 NLA_PUT_FLAG(msg
, NL80211_KEY_DEFAULT
);
1954 NLA_PUT_U8(msg
, NL80211_KEY_IDX
, key_idx
);
1959 NLA_PUT_U32(msg
, NL80211_KEY_CIPHER
,
1960 WLAN_CIPHER_SUITE_WEP40
);
1962 NLA_PUT_U32(msg
, NL80211_KEY_CIPHER
,
1963 WLAN_CIPHER_SUITE_WEP104
);
1966 NLA_PUT_U32(msg
, NL80211_KEY_CIPHER
, WLAN_CIPHER_SUITE_TKIP
);
1969 NLA_PUT_U32(msg
, NL80211_KEY_CIPHER
, WLAN_CIPHER_SUITE_CCMP
);
1972 NLA_PUT_U32(msg
, NL80211_KEY_CIPHER
,
1973 WLAN_CIPHER_SUITE_AES_CMAC
);
1976 wpa_printf(MSG_ERROR
, "%s: Unsupported encryption "
1977 "algorithm %d", __func__
, alg
);
1982 NLA_PUT(msg
, NL80211_KEY_SEQ
, seq_len
, seq
);
1984 NLA_PUT(msg
, NL80211_KEY_DATA
, key_len
, key
);
1986 nla_nest_end(msg
, key_attr
);
1994 static int nl80211_set_conn_keys(struct wpa_driver_associate_params
*params
,
1998 struct nlattr
*nl_keys
, *nl_key
;
2000 for (i
= 0; i
< 4; i
++) {
2001 if (!params
->wep_key
[i
])
2009 NLA_PUT_FLAG(msg
, NL80211_ATTR_PRIVACY
);
2011 nl_keys
= nla_nest_start(msg
, NL80211_ATTR_KEYS
);
2013 goto nla_put_failure
;
2015 for (i
= 0; i
< 4; i
++) {
2016 if (!params
->wep_key
[i
])
2019 nl_key
= nla_nest_start(msg
, i
);
2021 goto nla_put_failure
;
2023 NLA_PUT(msg
, NL80211_KEY_DATA
, params
->wep_key_len
[i
],
2024 params
->wep_key
[i
]);
2025 if (params
->wep_key_len
[i
] == 5)
2026 NLA_PUT_U32(msg
, NL80211_KEY_CIPHER
,
2027 WLAN_CIPHER_SUITE_WEP40
);
2029 NLA_PUT_U32(msg
, NL80211_KEY_CIPHER
,
2030 WLAN_CIPHER_SUITE_WEP104
);
2032 NLA_PUT_U8(msg
, NL80211_KEY_IDX
, i
);
2034 if (i
== params
->wep_tx_keyidx
)
2035 NLA_PUT_FLAG(msg
, NL80211_KEY_DEFAULT
);
2037 nla_nest_end(msg
, nl_key
);
2039 nla_nest_end(msg
, nl_keys
);
2048 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data
*drv
,
2049 const u8
*addr
, int cmd
, u16 reason_code
)
2054 msg
= nlmsg_alloc();
2058 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0, 0, cmd
, 0);
2060 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, drv
->ifindex
);
2061 NLA_PUT_U16(msg
, NL80211_ATTR_REASON_CODE
, reason_code
);
2062 NLA_PUT(msg
, NL80211_ATTR_MAC
, ETH_ALEN
, addr
);
2064 ret
= send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
2067 wpa_printf(MSG_DEBUG
, "nl80211: MLME command failed: ret=%d "
2068 "(%s)", ret
, strerror(-ret
));
2069 goto nla_put_failure
;
2079 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data
*drv
,
2080 const u8
*addr
, int reason_code
)
2082 wpa_printf(MSG_DEBUG
, "%s", __func__
);
2083 drv
->associated
= 0;
2084 return wpa_driver_nl80211_mlme(drv
, addr
, NL80211_CMD_DISCONNECT
,
2089 static int wpa_driver_nl80211_deauthenticate(void *priv
, const u8
*addr
,
2092 struct wpa_driver_nl80211_data
*drv
= priv
;
2093 if (!(drv
->capa
.flags
& WPA_DRIVER_FLAGS_SME
))
2094 return wpa_driver_nl80211_disconnect(drv
, addr
, reason_code
);
2095 wpa_printf(MSG_DEBUG
, "%s", __func__
);
2096 drv
->associated
= 0;
2097 return wpa_driver_nl80211_mlme(drv
, addr
, NL80211_CMD_DEAUTHENTICATE
,
2102 static int wpa_driver_nl80211_disassociate(void *priv
, const u8
*addr
,
2105 struct wpa_driver_nl80211_data
*drv
= priv
;
2106 if (!(drv
->capa
.flags
& WPA_DRIVER_FLAGS_SME
))
2107 return wpa_driver_nl80211_disconnect(drv
, addr
, reason_code
);
2108 wpa_printf(MSG_DEBUG
, "%s", __func__
);
2109 drv
->associated
= 0;
2110 return wpa_driver_nl80211_mlme(drv
, addr
, NL80211_CMD_DISASSOCIATE
,
2115 static int wpa_driver_nl80211_authenticate(
2116 void *priv
, struct wpa_driver_auth_params
*params
)
2118 struct wpa_driver_nl80211_data
*drv
= priv
;
2121 enum nl80211_auth_type type
;
2124 drv
->associated
= 0;
2125 os_memset(drv
->auth_bssid
, 0, ETH_ALEN
);
2127 if (wpa_driver_nl80211_set_mode(drv
, IEEE80211_MODE_INFRA
) < 0)
2131 msg
= nlmsg_alloc();
2135 wpa_printf(MSG_DEBUG
, "nl80211: Authenticate (ifindex=%d)",
2138 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0, 0,
2139 NL80211_CMD_AUTHENTICATE
, 0);
2141 for (i
= 0; i
< 4; i
++) {
2142 if (!params
->wep_key
[i
])
2144 wpa_driver_nl80211_set_key(drv
->ifname
, drv
, WPA_ALG_WEP
, NULL
,
2146 i
== params
->wep_tx_keyidx
, NULL
, 0,
2148 params
->wep_key_len
[i
]);
2149 if (params
->wep_tx_keyidx
!= i
)
2151 if (nl_add_key(msg
, WPA_ALG_WEP
, i
, 1, NULL
, 0,
2152 params
->wep_key
[i
], params
->wep_key_len
[i
])) {
2158 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, drv
->ifindex
);
2159 if (params
->bssid
) {
2160 wpa_printf(MSG_DEBUG
, " * bssid=" MACSTR
,
2161 MAC2STR(params
->bssid
));
2162 NLA_PUT(msg
, NL80211_ATTR_MAC
, ETH_ALEN
, params
->bssid
);
2165 wpa_printf(MSG_DEBUG
, " * freq=%d", params
->freq
);
2166 NLA_PUT_U32(msg
, NL80211_ATTR_WIPHY_FREQ
, params
->freq
);
2169 wpa_hexdump_ascii(MSG_DEBUG
, " * SSID",
2170 params
->ssid
, params
->ssid_len
);
2171 NLA_PUT(msg
, NL80211_ATTR_SSID
, params
->ssid_len
,
2174 wpa_hexdump(MSG_DEBUG
, " * IEs", params
->ie
, params
->ie_len
);
2176 NLA_PUT(msg
, NL80211_ATTR_IE
, params
->ie_len
, params
->ie
);
2178 * TODO: if multiple auth_alg options enabled, try them one by one if
2179 * the AP rejects authentication due to unknown auth alg
2181 if (params
->auth_alg
& AUTH_ALG_OPEN_SYSTEM
)
2182 type
= NL80211_AUTHTYPE_OPEN_SYSTEM
;
2183 else if (params
->auth_alg
& AUTH_ALG_SHARED_KEY
)
2184 type
= NL80211_AUTHTYPE_SHARED_KEY
;
2185 else if (params
->auth_alg
& AUTH_ALG_LEAP
)
2186 type
= NL80211_AUTHTYPE_NETWORK_EAP
;
2187 else if (params
->auth_alg
& AUTH_ALG_FT
)
2188 type
= NL80211_AUTHTYPE_FT
;
2190 goto nla_put_failure
;
2191 wpa_printf(MSG_DEBUG
, " * Auth Type %d", type
);
2192 NLA_PUT_U32(msg
, NL80211_ATTR_AUTH_TYPE
, type
);
2194 ret
= send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
2197 wpa_printf(MSG_DEBUG
, "nl80211: MLME command failed: ret=%d "
2198 "(%s)", ret
, strerror(-ret
));
2200 if (ret
== -EALREADY
&& count
== 1 && params
->bssid
) {
2202 * mac80211 does not currently accept new
2203 * authentication if we are already authenticated. As a
2204 * workaround, force deauthentication and try again.
2206 wpa_printf(MSG_DEBUG
, "nl80211: Retry authentication "
2207 "after forced deauthentication");
2208 wpa_driver_nl80211_deauthenticate(
2210 WLAN_REASON_PREV_AUTH_NOT_VALID
);
2214 goto nla_put_failure
;
2217 wpa_printf(MSG_DEBUG
, "nl80211: Authentication request send "
2226 #if defined(CONFIG_AP) || defined(HOSTAPD)
2228 struct phy_info_arg
{
2230 struct hostapd_hw_modes
*modes
;
2233 static int phy_info_handler(struct nl_msg
*msg
, void *arg
)
2235 struct nlattr
*tb_msg
[NL80211_ATTR_MAX
+ 1];
2236 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
2237 struct phy_info_arg
*phy_info
= arg
;
2239 struct nlattr
*tb_band
[NL80211_BAND_ATTR_MAX
+ 1];
2241 struct nlattr
*tb_freq
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
2242 static struct nla_policy freq_policy
[NL80211_FREQUENCY_ATTR_MAX
+ 1] = {
2243 [NL80211_FREQUENCY_ATTR_FREQ
] = { .type
= NLA_U32
},
2244 [NL80211_FREQUENCY_ATTR_DISABLED
] = { .type
= NLA_FLAG
},
2245 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
] = { .type
= NLA_FLAG
},
2246 [NL80211_FREQUENCY_ATTR_NO_IBSS
] = { .type
= NLA_FLAG
},
2247 [NL80211_FREQUENCY_ATTR_RADAR
] = { .type
= NLA_FLAG
},
2248 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER
] = { .type
= NLA_U32
},
2251 struct nlattr
*tb_rate
[NL80211_BITRATE_ATTR_MAX
+ 1];
2252 static struct nla_policy rate_policy
[NL80211_BITRATE_ATTR_MAX
+ 1] = {
2253 [NL80211_BITRATE_ATTR_RATE
] = { .type
= NLA_U32
},
2254 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE
] = { .type
= NLA_FLAG
},
2257 struct nlattr
*nl_band
;
2258 struct nlattr
*nl_freq
;
2259 struct nlattr
*nl_rate
;
2260 int rem_band
, rem_freq
, rem_rate
;
2261 struct hostapd_hw_modes
*mode
;
2262 int idx
, mode_is_set
;
2264 nla_parse(tb_msg
, NL80211_ATTR_MAX
, genlmsg_attrdata(gnlh
, 0),
2265 genlmsg_attrlen(gnlh
, 0), NULL
);
2267 if (!tb_msg
[NL80211_ATTR_WIPHY_BANDS
])
2270 nla_for_each_nested(nl_band
, tb_msg
[NL80211_ATTR_WIPHY_BANDS
], rem_band
) {
2271 mode
= realloc(phy_info
->modes
, (*phy_info
->num_modes
+ 1) * sizeof(*mode
));
2274 phy_info
->modes
= mode
;
2278 mode
= &phy_info
->modes
[*(phy_info
->num_modes
)];
2279 memset(mode
, 0, sizeof(*mode
));
2280 *(phy_info
->num_modes
) += 1;
2282 nla_parse(tb_band
, NL80211_BAND_ATTR_MAX
, nla_data(nl_band
),
2283 nla_len(nl_band
), NULL
);
2285 if (tb_band
[NL80211_BAND_ATTR_HT_CAPA
]) {
2286 mode
->ht_capab
= nla_get_u16(
2287 tb_band
[NL80211_BAND_ATTR_HT_CAPA
]);
2290 if (tb_band
[NL80211_BAND_ATTR_HT_AMPDU_FACTOR
]) {
2291 mode
->a_mpdu_params
|= nla_get_u8(
2292 tb_band
[NL80211_BAND_ATTR_HT_AMPDU_FACTOR
]) &
2296 if (tb_band
[NL80211_BAND_ATTR_HT_AMPDU_DENSITY
]) {
2297 mode
->a_mpdu_params
|= nla_get_u8(
2298 tb_band
[NL80211_BAND_ATTR_HT_AMPDU_DENSITY
]) <<
2302 if (tb_band
[NL80211_BAND_ATTR_HT_MCS_SET
] &&
2303 nla_len(tb_band
[NL80211_BAND_ATTR_HT_MCS_SET
])) {
2305 mcs
= nla_data(tb_band
[NL80211_BAND_ATTR_HT_MCS_SET
]);
2306 os_memcpy(mode
->mcs_set
, mcs
, 16);
2309 nla_for_each_nested(nl_freq
, tb_band
[NL80211_BAND_ATTR_FREQS
], rem_freq
) {
2310 nla_parse(tb_freq
, NL80211_FREQUENCY_ATTR_MAX
, nla_data(nl_freq
),
2311 nla_len(nl_freq
), freq_policy
);
2312 if (!tb_freq
[NL80211_FREQUENCY_ATTR_FREQ
])
2314 mode
->num_channels
++;
2317 mode
->channels
= calloc(mode
->num_channels
, sizeof(struct hostapd_channel_data
));
2318 if (!mode
->channels
)
2323 nla_for_each_nested(nl_freq
, tb_band
[NL80211_BAND_ATTR_FREQS
], rem_freq
) {
2324 nla_parse(tb_freq
, NL80211_FREQUENCY_ATTR_MAX
, nla_data(nl_freq
),
2325 nla_len(nl_freq
), freq_policy
);
2326 if (!tb_freq
[NL80211_FREQUENCY_ATTR_FREQ
])
2329 mode
->channels
[idx
].freq
= nla_get_u32(tb_freq
[NL80211_FREQUENCY_ATTR_FREQ
]);
2330 mode
->channels
[idx
].flag
= 0;
2333 /* crude heuristic */
2334 if (mode
->channels
[idx
].freq
< 4000)
2335 mode
->mode
= HOSTAPD_MODE_IEEE80211B
;
2337 mode
->mode
= HOSTAPD_MODE_IEEE80211A
;
2341 /* crude heuristic */
2342 if (mode
->channels
[idx
].freq
< 4000)
2343 if (mode
->channels
[idx
].freq
== 2484)
2344 mode
->channels
[idx
].chan
= 14;
2346 mode
->channels
[idx
].chan
= (mode
->channels
[idx
].freq
- 2407) / 5;
2348 mode
->channels
[idx
].chan
= mode
->channels
[idx
].freq
/5 - 1000;
2350 if (tb_freq
[NL80211_FREQUENCY_ATTR_DISABLED
])
2351 mode
->channels
[idx
].flag
|=
2352 HOSTAPD_CHAN_DISABLED
;
2353 if (tb_freq
[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
])
2354 mode
->channels
[idx
].flag
|=
2355 HOSTAPD_CHAN_PASSIVE_SCAN
;
2356 if (tb_freq
[NL80211_FREQUENCY_ATTR_NO_IBSS
])
2357 mode
->channels
[idx
].flag
|=
2358 HOSTAPD_CHAN_NO_IBSS
;
2359 if (tb_freq
[NL80211_FREQUENCY_ATTR_RADAR
])
2360 mode
->channels
[idx
].flag
|=
2363 if (tb_freq
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER
] &&
2364 !tb_freq
[NL80211_FREQUENCY_ATTR_DISABLED
])
2365 mode
->channels
[idx
].max_tx_power
=
2366 nla_get_u32(tb_freq
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER
]) / 100;
2371 nla_for_each_nested(nl_rate
, tb_band
[NL80211_BAND_ATTR_RATES
], rem_rate
) {
2372 nla_parse(tb_rate
, NL80211_BITRATE_ATTR_MAX
, nla_data(nl_rate
),
2373 nla_len(nl_rate
), rate_policy
);
2374 if (!tb_rate
[NL80211_BITRATE_ATTR_RATE
])
2379 mode
->rates
= calloc(mode
->num_rates
, sizeof(struct hostapd_rate_data
));
2385 nla_for_each_nested(nl_rate
, tb_band
[NL80211_BAND_ATTR_RATES
], rem_rate
) {
2386 nla_parse(tb_rate
, NL80211_BITRATE_ATTR_MAX
, nla_data(nl_rate
),
2387 nla_len(nl_rate
), rate_policy
);
2388 if (!tb_rate
[NL80211_BITRATE_ATTR_RATE
])
2390 mode
->rates
[idx
].rate
= nla_get_u32(tb_rate
[NL80211_BITRATE_ATTR_RATE
]);
2392 /* crude heuristic */
2393 if (mode
->mode
== HOSTAPD_MODE_IEEE80211B
&&
2394 mode
->rates
[idx
].rate
> 200)
2395 mode
->mode
= HOSTAPD_MODE_IEEE80211G
;
2397 if (tb_rate
[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE
])
2398 mode
->rates
[idx
].flags
|= HOSTAPD_RATE_PREAMBLE2
;
2407 static struct hostapd_hw_modes
*
2408 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes
*modes
, u16
*num_modes
)
2411 struct hostapd_hw_modes
*mode11g
= NULL
, *nmodes
, *mode
;
2412 int i
, mode11g_idx
= -1;
2414 /* If only 802.11g mode is included, use it to construct matching
2415 * 802.11b mode data. */
2417 for (m
= 0; m
< *num_modes
; m
++) {
2418 if (modes
[m
].mode
== HOSTAPD_MODE_IEEE80211B
)
2419 return modes
; /* 802.11b already included */
2420 if (modes
[m
].mode
== HOSTAPD_MODE_IEEE80211G
)
2424 if (mode11g_idx
< 0)
2425 return modes
; /* 2.4 GHz band not supported at all */
2427 nmodes
= os_realloc(modes
, (*num_modes
+ 1) * sizeof(*nmodes
));
2429 return modes
; /* Could not add 802.11b mode */
2431 mode
= &nmodes
[*num_modes
];
2432 os_memset(mode
, 0, sizeof(*mode
));
2436 mode
->mode
= HOSTAPD_MODE_IEEE80211B
;
2438 mode11g
= &modes
[mode11g_idx
];
2439 mode
->num_channels
= mode11g
->num_channels
;
2440 mode
->channels
= os_malloc(mode11g
->num_channels
*
2441 sizeof(struct hostapd_channel_data
));
2442 if (mode
->channels
== NULL
) {
2444 return modes
; /* Could not add 802.11b mode */
2446 os_memcpy(mode
->channels
, mode11g
->channels
,
2447 mode11g
->num_channels
* sizeof(struct hostapd_channel_data
));
2449 mode
->num_rates
= 0;
2450 mode
->rates
= os_malloc(4 * sizeof(struct hostapd_rate_data
));
2451 if (mode
->rates
== NULL
) {
2452 os_free(mode
->channels
);
2454 return modes
; /* Could not add 802.11b mode */
2457 for (i
= 0; i
< mode11g
->num_rates
; i
++) {
2458 if (mode11g
->rates
[i
].rate
> 110 ||
2459 mode11g
->rates
[i
].flags
&
2460 (HOSTAPD_RATE_ERP
| HOSTAPD_RATE_OFDM
))
2462 mode
->rates
[mode
->num_rates
] = mode11g
->rates
[i
];
2464 if (mode
->num_rates
== 4)
2468 if (mode
->num_rates
== 0) {
2469 os_free(mode
->channels
);
2470 os_free(mode
->rates
);
2472 return modes
; /* No 802.11b rates */
2475 wpa_printf(MSG_DEBUG
, "nl80211: Added 802.11b mode based on 802.11g "
2482 static struct hostapd_hw_modes
*
2483 wpa_driver_nl80211_get_hw_feature_data(void *priv
, u16
*num_modes
, u16
*flags
)
2485 struct wpa_driver_nl80211_data
*drv
= priv
;
2487 struct phy_info_arg result
= {
2488 .num_modes
= num_modes
,
2495 msg
= nlmsg_alloc();
2499 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0,
2500 0, NL80211_CMD_GET_WIPHY
, 0);
2502 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, drv
->ifindex
);
2504 if (send_and_recv_msgs(drv
, msg
, phy_info_handler
, &result
) == 0)
2505 return wpa_driver_nl80211_add_11b(result
.modes
, num_modes
);
2511 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data
*drv
,
2512 const void *data
, size_t len
,
2516 0x00, 0x00, /* radiotap version */
2517 0x0e, 0x00, /* radiotap length */
2518 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2519 IEEE80211_RADIOTAP_F_FRAG
, /* F_FRAG (fragment if required) */
2521 0x00, 0x00, /* RX and TX flags to indicate that */
2522 0x00, 0x00, /* this is the injected frame directly */
2524 struct iovec iov
[2] = {
2526 .iov_base
= &rtap_hdr
,
2527 .iov_len
= sizeof(rtap_hdr
),
2530 .iov_base
= (void *) data
,
2534 struct msghdr msg
= {
2539 .msg_control
= NULL
,
2540 .msg_controllen
= 0,
2545 rtap_hdr
[8] |= IEEE80211_RADIOTAP_F_WEP
;
2547 return sendmsg(drv
->monitor_sock
, &msg
, 0);
2551 static int wpa_driver_nl80211_send_mlme(void *priv
, const u8
*data
,
2554 struct wpa_driver_nl80211_data
*drv
= priv
;
2555 struct ieee80211_mgmt
*mgmt
;
2559 mgmt
= (struct ieee80211_mgmt
*) data
;
2560 fc
= le_to_host16(mgmt
->frame_control
);
2562 if (WLAN_FC_GET_TYPE(fc
) == WLAN_FC_TYPE_MGMT
&&
2563 WLAN_FC_GET_STYPE(fc
) == WLAN_FC_STYPE_AUTH
) {
2565 * Only one of the authentication frame types is encrypted.
2566 * In order for static WEP encryption to work properly (i.e.,
2567 * to not encrypt the frame), we need to tell mac80211 about
2568 * the frames that must not be encrypted.
2570 u16 auth_alg
= le_to_host16(mgmt
->u
.auth
.auth_alg
);
2571 u16 auth_trans
= le_to_host16(mgmt
->u
.auth
.auth_transaction
);
2572 if (auth_alg
!= WLAN_AUTH_SHARED_KEY
|| auth_trans
!= 3)
2576 return wpa_driver_nl80211_send_frame(drv
, data
, data_len
, encrypt
);
2579 #endif /* CONFIG_AP || HOSTAPD */
2582 static int wpa_driver_nl80211_set_beacon(const char *ifname
, void *priv
,
2583 const u8
*head
, size_t head_len
,
2584 const u8
*tail
, size_t tail_len
,
2585 int dtim_period
, int beacon_int
)
2587 struct wpa_driver_nl80211_data
*drv
= priv
;
2589 u8 cmd
= NL80211_CMD_NEW_BEACON
;
2592 int ifindex
= if_nametoindex(ifname
);
2594 struct i802_bss
*bss
;
2596 bss
= get_bss(drv
, ifindex
);
2599 beacon_set
= bss
->beacon_set
;
2601 beacon_set
= drv
->beacon_set
;
2602 #endif /* HOSTAPD */
2604 msg
= nlmsg_alloc();
2608 wpa_printf(MSG_DEBUG
, "nl80211: Set beacon (beacon_set=%d)",
2611 cmd
= NL80211_CMD_SET_BEACON
;
2613 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0,
2615 NLA_PUT(msg
, NL80211_ATTR_BEACON_HEAD
, head_len
, head
);
2616 NLA_PUT(msg
, NL80211_ATTR_BEACON_TAIL
, tail_len
, tail
);
2617 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, ifindex
);
2618 NLA_PUT_U32(msg
, NL80211_ATTR_BEACON_INTERVAL
, beacon_int
);
2619 NLA_PUT_U32(msg
, NL80211_ATTR_DTIM_PERIOD
, dtim_period
);
2621 ret
= send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
2623 wpa_printf(MSG_DEBUG
, "nl80211: Beacon set failed: %d (%s)",
2624 ret
, strerror(-ret
));
2627 bss
->beacon_set
= 1;
2629 drv
->beacon_set
= 1;
2630 #endif /* HOSTAPD */
2638 #if defined(CONFIG_AP) || defined(HOSTAPD)
2640 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data
*drv
,
2641 int freq
, int ht_enabled
,
2642 int sec_channel_offset
)
2647 msg
= nlmsg_alloc();
2651 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0, 0,
2652 NL80211_CMD_SET_WIPHY
, 0);
2654 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, drv
->ifindex
);
2655 NLA_PUT_U32(msg
, NL80211_ATTR_WIPHY_FREQ
, freq
);
2657 switch (sec_channel_offset
) {
2659 NLA_PUT_U32(msg
, NL80211_ATTR_WIPHY_CHANNEL_TYPE
,
2660 NL80211_CHAN_HT40MINUS
);
2663 NLA_PUT_U32(msg
, NL80211_ATTR_WIPHY_CHANNEL_TYPE
,
2664 NL80211_CHAN_HT40PLUS
);
2667 NLA_PUT_U32(msg
, NL80211_ATTR_WIPHY_CHANNEL_TYPE
,
2673 ret
= send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
2676 wpa_printf(MSG_DEBUG
, "nl80211: Failed to set channel (freq=%d): "
2677 "%d (%s)", freq
, ret
, strerror(-ret
));
2683 static int wpa_driver_nl80211_sta_add(const char *ifname
, void *priv
,
2684 struct hostapd_sta_add_params
*params
)
2686 struct wpa_driver_nl80211_data
*drv
= priv
;
2690 msg
= nlmsg_alloc();
2694 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0,
2695 0, NL80211_CMD_NEW_STATION
, 0);
2697 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, if_nametoindex(ifname
));
2698 NLA_PUT(msg
, NL80211_ATTR_MAC
, ETH_ALEN
, params
->addr
);
2699 NLA_PUT_U16(msg
, NL80211_ATTR_STA_AID
, params
->aid
);
2700 NLA_PUT(msg
, NL80211_ATTR_STA_SUPPORTED_RATES
, params
->supp_rates_len
,
2701 params
->supp_rates
);
2702 NLA_PUT_U16(msg
, NL80211_ATTR_STA_LISTEN_INTERVAL
,
2703 params
->listen_interval
);
2704 if (params
->ht_capabilities
) {
2705 NLA_PUT(msg
, NL80211_ATTR_HT_CAPABILITY
,
2706 sizeof(*params
->ht_capabilities
),
2707 params
->ht_capabilities
);
2710 ret
= send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
2712 wpa_printf(MSG_DEBUG
, "nl80211: NL80211_CMD_NEW_STATION "
2713 "result: %d (%s)", ret
, strerror(-ret
));
2721 static int wpa_driver_nl80211_sta_remove(void *priv
, const u8
*addr
)
2723 struct wpa_driver_nl80211_data
*drv
= priv
;
2727 msg
= nlmsg_alloc();
2731 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0,
2732 0, NL80211_CMD_DEL_STATION
, 0);
2734 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
,
2735 if_nametoindex(drv
->ifname
));
2736 NLA_PUT(msg
, NL80211_ATTR_MAC
, ETH_ALEN
, addr
);
2738 ret
= send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
2747 static void nl80211_remove_iface(struct wpa_driver_nl80211_data
*drv
,
2753 /* stop listening for EAPOL on this interface */
2754 del_ifidx(drv
, ifidx
);
2755 #endif /* HOSTAPD */
2757 msg
= nlmsg_alloc();
2759 goto nla_put_failure
;
2761 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0,
2762 0, NL80211_CMD_DEL_INTERFACE
, 0);
2763 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, ifidx
);
2765 if (send_and_recv_msgs(drv
, msg
, NULL
, NULL
) == 0)
2768 wpa_printf(MSG_ERROR
, "Failed to remove interface (ifidx=%d).\n",
2773 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data
*drv
,
2775 enum nl80211_iftype iftype
,
2778 struct nl_msg
*msg
, *flags
= NULL
;
2782 msg
= nlmsg_alloc();
2786 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0,
2787 0, NL80211_CMD_NEW_INTERFACE
, 0);
2788 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, drv
->ifindex
);
2789 NLA_PUT_STRING(msg
, NL80211_ATTR_IFNAME
, ifname
);
2790 NLA_PUT_U32(msg
, NL80211_ATTR_IFTYPE
, iftype
);
2792 if (iftype
== NL80211_IFTYPE_MONITOR
) {
2795 flags
= nlmsg_alloc();
2797 goto nla_put_failure
;
2799 NLA_PUT_FLAG(flags
, NL80211_MNTR_FLAG_COOK_FRAMES
);
2801 err
= nla_put_nested(msg
, NL80211_ATTR_MNTR_FLAGS
, flags
);
2806 goto nla_put_failure
;
2809 ret
= send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
2812 wpa_printf(MSG_ERROR
, "Failed to create interface %s: %d (%s)",
2813 ifname
, ret
, strerror(-ret
));
2817 ifidx
= if_nametoindex(ifname
);
2823 /* start listening for EAPOL on this interface */
2824 add_ifidx(drv
, ifidx
);
2826 if (addr
&& iftype
== NL80211_IFTYPE_AP
&&
2827 set_ifhwaddr(drv
, ifname
, addr
)) {
2828 nl80211_remove_iface(drv
, ifidx
);
2831 #endif /* HOSTAPD */
2835 static int nl80211_create_iface(struct wpa_driver_nl80211_data
*drv
,
2836 const char *ifname
, enum nl80211_iftype iftype
,
2841 ret
= nl80211_create_iface_once(drv
, ifname
, iftype
, addr
);
2843 /* if error occured and interface exists already */
2844 if (ret
== -ENFILE
&& if_nametoindex(ifname
)) {
2845 wpa_printf(MSG_INFO
, "Try to remove and re-create %s", ifname
);
2847 /* Try to remove the interface that was already there. */
2848 nl80211_remove_iface(drv
, if_nametoindex(ifname
));
2850 /* Try to create the interface again */
2851 ret
= nl80211_create_iface_once(drv
, ifname
, iftype
, addr
);
2857 #endif /* CONFIG_AP || HOSTAPD */
2861 void ap_tx_status(void *ctx
, const u8
*addr
,
2862 const u8
*buf
, size_t len
, int ack
);
2863 void ap_rx_from_unknown_sta(void *ctx
, struct ieee80211_hdr
*hdr
, size_t len
);
2864 void ap_mgmt_rx(void *ctx
, u8
*buf
, size_t len
, u16 stype
,
2865 struct hostapd_frame_info
*fi
);
2866 void ap_mgmt_tx_cb(void *ctx
, u8
*buf
, size_t len
, u16 stype
, int ok
);
2868 #endif /* CONFIG_AP */
2870 #if defined(CONFIG_AP) || defined(HOSTAPD)
2872 static void handle_tx_callback(void *ctx
, u8
*buf
, size_t len
, int ok
)
2874 struct ieee80211_hdr
*hdr
;
2875 u16 fc
, type
, stype
;
2877 hdr
= (struct ieee80211_hdr
*) buf
;
2878 fc
= le_to_host16(hdr
->frame_control
);
2880 type
= WLAN_FC_GET_TYPE(fc
);
2881 stype
= WLAN_FC_GET_STYPE(fc
);
2884 case WLAN_FC_TYPE_MGMT
:
2885 wpa_printf(MSG_DEBUG
, "MGMT (TX callback) %s",
2886 ok
? "ACK" : "fail");
2888 hostapd_mgmt_tx_cb(ctx
, buf
, len
, stype
, ok
);
2890 ap_mgmt_tx_cb(ctx
, buf
, len
, stype
, ok
);
2891 #endif /* HOSTAPD */
2893 case WLAN_FC_TYPE_CTRL
:
2894 wpa_printf(MSG_DEBUG
, "CTRL (TX callback) %s",
2895 ok
? "ACK" : "fail");
2897 case WLAN_FC_TYPE_DATA
:
2899 hostapd_tx_status(ctx
, hdr
->addr1
, buf
, len
, ok
);
2901 ap_tx_status(ctx
, hdr
->addr1
, buf
, len
, ok
);
2902 #endif /* HOSTAPD */
2905 wpa_printf(MSG_DEBUG
, "unknown TX callback frame type %d",
2912 static void from_unknown_sta(struct wpa_driver_nl80211_data
*drv
,
2913 struct ieee80211_hdr
*hdr
, size_t len
)
2916 hostapd_rx_from_unknown_sta(drv
->ctx
, hdr
, len
);
2918 ap_rx_from_unknown_sta(drv
->ctx
, hdr
, len
);
2919 #endif /* HOSTAPD */
2923 static void handle_frame(struct wpa_driver_nl80211_data
*drv
,
2924 u8
*buf
, size_t len
,
2925 struct hostapd_frame_info
*hfi
)
2927 struct ieee80211_hdr
*hdr
;
2930 hdr
= (struct ieee80211_hdr
*) buf
;
2931 fc
= le_to_host16(hdr
->frame_control
);
2932 stype
= WLAN_FC_GET_STYPE(fc
);
2934 switch (WLAN_FC_GET_TYPE(fc
)) {
2935 case WLAN_FC_TYPE_MGMT
:
2936 if (stype
!= WLAN_FC_STYPE_BEACON
&&
2937 stype
!= WLAN_FC_STYPE_PROBE_REQ
)
2938 wpa_printf(MSG_MSGDUMP
, "MGMT");
2940 hostapd_mgmt_rx(drv
->ctx
, buf
, len
, stype
, hfi
);
2942 ap_mgmt_rx(drv
->ctx
, buf
, len
, stype
, hfi
);
2943 #endif /* HOSTAPD */
2945 case WLAN_FC_TYPE_CTRL
:
2946 /* can only get here with PS-Poll frames */
2947 wpa_printf(MSG_DEBUG
, "CTRL");
2948 from_unknown_sta(drv
, hdr
, len
);
2950 case WLAN_FC_TYPE_DATA
:
2951 from_unknown_sta(drv
, hdr
, len
);
2957 static void handle_monitor_read(int sock
, void *eloop_ctx
, void *sock_ctx
)
2959 struct wpa_driver_nl80211_data
*drv
= eloop_ctx
;
2961 unsigned char buf
[3000];
2962 struct ieee80211_radiotap_iterator iter
;
2964 struct hostapd_frame_info hfi
;
2965 int injected
= 0, failed
= 0, rxflags
= 0;
2967 len
= recv(sock
, buf
, sizeof(buf
), 0);
2973 if (ieee80211_radiotap_iterator_init(&iter
, (void*)buf
, len
)) {
2974 printf("received invalid radiotap frame\n");
2978 memset(&hfi
, 0, sizeof(hfi
));
2981 ret
= ieee80211_radiotap_iterator_next(&iter
);
2985 printf("received invalid radiotap frame (%d)\n", ret
);
2988 switch (iter
.this_arg_index
) {
2989 case IEEE80211_RADIOTAP_FLAGS
:
2990 if (*iter
.this_arg
& IEEE80211_RADIOTAP_F_FCS
)
2993 case IEEE80211_RADIOTAP_RX_FLAGS
:
2996 case IEEE80211_RADIOTAP_TX_FLAGS
:
2998 failed
= le_to_host16((*(uint16_t *) iter
.this_arg
)) &
2999 IEEE80211_RADIOTAP_F_TX_FAIL
;
3001 case IEEE80211_RADIOTAP_DATA_RETRIES
:
3003 case IEEE80211_RADIOTAP_CHANNEL
:
3004 /* TODO convert from freq/flags to channel number
3008 case IEEE80211_RADIOTAP_RATE
:
3009 hfi
.datarate
= *iter
.this_arg
* 5;
3011 case IEEE80211_RADIOTAP_DB_ANTSIGNAL
:
3012 hfi
.ssi_signal
= *iter
.this_arg
;
3017 if (rxflags
&& injected
)
3021 handle_frame(drv
, buf
+ iter
.max_length
,
3022 len
- iter
.max_length
, &hfi
);
3024 handle_tx_callback(drv
->ctx
, buf
+ iter
.max_length
,
3025 len
- iter
.max_length
, !failed
);
3030 * we post-process the filter code later and rewrite
3031 * this to the offset to the last instruction
3036 static struct sock_filter msock_filter_insns
[] = {
3038 * do a little-endian load of the radiotap length field
3040 /* load lower byte into A */
3041 BPF_STMT(BPF_LD
| BPF_B
| BPF_ABS
, 2),
3042 /* put it into X (== index register) */
3043 BPF_STMT(BPF_MISC
| BPF_TAX
, 0),
3044 /* load upper byte into A */
3045 BPF_STMT(BPF_LD
| BPF_B
| BPF_ABS
, 3),
3046 /* left-shift it by 8 */
3047 BPF_STMT(BPF_ALU
| BPF_LSH
| BPF_K
, 8),
3049 BPF_STMT(BPF_ALU
| BPF_OR
| BPF_X
, 0),
3050 /* put result into X */
3051 BPF_STMT(BPF_MISC
| BPF_TAX
, 0),
3054 * Allow management frames through, this also gives us those
3055 * management frames that we sent ourselves with status
3057 /* load the lower byte of the IEEE 802.11 frame control field */
3058 BPF_STMT(BPF_LD
| BPF_B
| BPF_IND
, 0),
3059 /* mask off frame type and version */
3060 BPF_STMT(BPF_ALU
| BPF_AND
| BPF_K
, 0xF),
3061 /* accept frame if it's both 0, fall through otherwise */
3062 BPF_JUMP(BPF_JMP
| BPF_JEQ
| BPF_K
, 0, PASS
, 0),
3065 * TODO: add a bit to radiotap RX flags that indicates
3066 * that the sending station is not associated, then
3067 * add a filter here that filters on our DA and that flag
3068 * to allow us to deauth frames to that bad station.
3070 * Not a regression -- we didn't do it before either.
3075 * drop non-data frames, WDS frames
3077 /* load the lower byte of the frame control field */
3078 BPF_STMT(BPF_LD
| BPF_B
| BPF_IND
, 0),
3079 /* mask off QoS bit */
3080 BPF_STMT(BPF_ALU
| BPF_AND
| BPF_K
, 0x0c),
3081 /* drop non-data frames */
3082 BPF_JUMP(BPF_JMP
| BPF_JEQ
| BPF_K
, 8, 0, FAIL
),
3083 /* load the upper byte of the frame control field */
3084 BPF_STMT(BPF_LD
| BPF_B
| BPF_IND
, 0),
3085 /* mask off toDS/fromDS */
3086 BPF_STMT(BPF_ALU
| BPF_AND
| BPF_K
, 0x03),
3087 /* drop WDS frames */
3088 BPF_JUMP(BPF_JMP
| BPF_JEQ
| BPF_K
, 3, FAIL
, 0),
3092 * add header length to index
3094 /* load the lower byte of the frame control field */
3095 BPF_STMT(BPF_LD
| BPF_B
| BPF_IND
, 0),
3096 /* mask off QoS bit */
3097 BPF_STMT(BPF_ALU
| BPF_AND
| BPF_K
, 0x80),
3098 /* right shift it by 6 to give 0 or 2 */
3099 BPF_STMT(BPF_ALU
| BPF_RSH
| BPF_K
, 6),
3100 /* add data frame header length */
3101 BPF_STMT(BPF_ALU
| BPF_ADD
| BPF_K
, 24),
3102 /* add index, was start of 802.11 header */
3103 BPF_STMT(BPF_ALU
| BPF_ADD
| BPF_X
, 0),
3104 /* move to index, now start of LL header */
3105 BPF_STMT(BPF_MISC
| BPF_TAX
, 0),
3108 * Accept empty data frames, we use those for
3111 BPF_STMT(BPF_LD
| BPF_W
| BPF_LEN
, 0),
3112 BPF_JUMP(BPF_JMP
| BPF_JEQ
| BPF_X
, 0, PASS
, 0),
3115 * Accept EAPOL frames
3117 BPF_STMT(BPF_LD
| BPF_W
| BPF_IND
, 0),
3118 BPF_JUMP(BPF_JMP
| BPF_JEQ
| BPF_K
, 0xAAAA0300, 0, FAIL
),
3119 BPF_STMT(BPF_LD
| BPF_W
| BPF_IND
, 4),
3120 BPF_JUMP(BPF_JMP
| BPF_JEQ
| BPF_K
, 0x0000888E, PASS
, FAIL
),
3122 /* keep these last two statements or change the code below */
3123 /* return 0 == "DROP" */
3124 BPF_STMT(BPF_RET
| BPF_K
, 0),
3125 /* return ~0 == "keep all" */
3126 BPF_STMT(BPF_RET
| BPF_K
, ~0),
3129 static struct sock_fprog msock_filter
= {
3130 .len
= sizeof(msock_filter_insns
)/sizeof(msock_filter_insns
[0]),
3131 .filter
= msock_filter_insns
,
3135 static int add_monitor_filter(int s
)
3139 /* rewrite all PASS/FAIL jump offsets */
3140 for (idx
= 0; idx
< msock_filter
.len
; idx
++) {
3141 struct sock_filter
*insn
= &msock_filter_insns
[idx
];
3143 if (BPF_CLASS(insn
->code
) == BPF_JMP
) {
3144 if (insn
->code
== (BPF_JMP
|BPF_JA
)) {
3145 if (insn
->k
== PASS
)
3146 insn
->k
= msock_filter
.len
- idx
- 2;
3147 else if (insn
->k
== FAIL
)
3148 insn
->k
= msock_filter
.len
- idx
- 3;
3151 if (insn
->jt
== PASS
)
3152 insn
->jt
= msock_filter
.len
- idx
- 2;
3153 else if (insn
->jt
== FAIL
)
3154 insn
->jt
= msock_filter
.len
- idx
- 3;
3156 if (insn
->jf
== PASS
)
3157 insn
->jf
= msock_filter
.len
- idx
- 2;
3158 else if (insn
->jf
== FAIL
)
3159 insn
->jf
= msock_filter
.len
- idx
- 3;
3163 if (setsockopt(s
, SOL_SOCKET
, SO_ATTACH_FILTER
,
3164 &msock_filter
, sizeof(msock_filter
))) {
3165 perror("SO_ATTACH_FILTER");
3173 static void nl80211_remove_monitor_interface(
3174 struct wpa_driver_nl80211_data
*drv
)
3176 if (drv
->monitor_ifidx
>= 0) {
3177 nl80211_remove_iface(drv
, drv
->monitor_ifidx
);
3178 drv
->monitor_ifidx
= -1;
3184 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data
*drv
)
3187 struct sockaddr_ll ll
;
3191 snprintf(buf
, IFNAMSIZ
, "mon.%s", drv
->ifname
);
3192 buf
[IFNAMSIZ
- 1] = '\0';
3194 drv
->monitor_ifidx
=
3195 nl80211_create_iface(drv
, buf
, NL80211_IFTYPE_MONITOR
, NULL
);
3197 if (drv
->monitor_ifidx
< 0)
3200 if (hostapd_set_iface_flags(drv
, buf
, 1))
3203 memset(&ll
, 0, sizeof(ll
));
3204 ll
.sll_family
= AF_PACKET
;
3205 ll
.sll_ifindex
= drv
->monitor_ifidx
;
3206 drv
->monitor_sock
= socket(PF_PACKET
, SOCK_RAW
, htons(ETH_P_ALL
));
3207 if (drv
->monitor_sock
< 0) {
3208 perror("socket[PF_PACKET,SOCK_RAW]");
3212 if (add_monitor_filter(drv
->monitor_sock
)) {
3213 wpa_printf(MSG_INFO
, "Failed to set socket filter for monitor "
3214 "interface; do filtering in user space");
3215 /* This works, but will cost in performance. */
3218 if (bind(drv
->monitor_sock
, (struct sockaddr
*) &ll
, sizeof(ll
)) < 0) {
3219 perror("monitor socket bind");
3223 optlen
= sizeof(optval
);
3226 (drv
->monitor_sock
, SOL_SOCKET
, SO_PRIORITY
, &optval
, optlen
)) {
3227 perror("Failed to set socket priority");
3231 if (eloop_register_read_sock(drv
->monitor_sock
, handle_monitor_read
,
3233 printf("Could not register monitor read socket\n");
3239 nl80211_remove_monitor_interface(drv
);
3244 static const u8 rfc1042_header
[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3246 static int wpa_driver_nl80211_hapd_send_eapol(
3247 void *priv
, const u8
*addr
, const u8
*data
,
3248 size_t data_len
, int encrypt
, const u8
*own_addr
)
3250 struct wpa_driver_nl80211_data
*drv
= priv
;
3251 struct ieee80211_hdr
*hdr
;
3256 int qos
= sta
->flags
& WLAN_STA_WME
;
3261 len
= sizeof(*hdr
) + (qos
? 2 : 0) + sizeof(rfc1042_header
) + 2 +
3263 hdr
= os_zalloc(len
);
3265 printf("malloc() failed for i802_send_data(len=%lu)\n",
3266 (unsigned long) len
);
3270 hdr
->frame_control
=
3271 IEEE80211_FC(WLAN_FC_TYPE_DATA
, WLAN_FC_STYPE_DATA
);
3272 hdr
->frame_control
|= host_to_le16(WLAN_FC_FROMDS
);
3274 hdr
->frame_control
|= host_to_le16(WLAN_FC_ISWEP
);
3275 #if 0 /* To be enabled if qos determination is added above */
3277 hdr
->frame_control
|=
3278 host_to_le16(WLAN_FC_STYPE_QOS_DATA
<< 4);
3282 memcpy(hdr
->IEEE80211_DA_FROMDS
, addr
, ETH_ALEN
);
3283 memcpy(hdr
->IEEE80211_BSSID_FROMDS
, own_addr
, ETH_ALEN
);
3284 memcpy(hdr
->IEEE80211_SA_FROMDS
, own_addr
, ETH_ALEN
);
3285 pos
= (u8
*) (hdr
+ 1);
3287 #if 0 /* To be enabled if qos determination is added above */
3289 /* add an empty QoS header if needed */
3296 memcpy(pos
, rfc1042_header
, sizeof(rfc1042_header
));
3297 pos
+= sizeof(rfc1042_header
);
3298 WPA_PUT_BE16(pos
, ETH_P_PAE
);
3300 memcpy(pos
, data
, data_len
);
3302 res
= wpa_driver_nl80211_send_frame(drv
, (u8
*) hdr
, len
, encrypt
);
3304 wpa_printf(MSG_ERROR
, "i802_send_eapol - packet len: %lu - "
3306 (unsigned long) len
, errno
, strerror(errno
));
3314 static u32
sta_flags_nl80211(int flags
)
3318 if (flags
& WLAN_STA_AUTHORIZED
)
3319 f
|= BIT(NL80211_STA_FLAG_AUTHORIZED
);
3320 if (flags
& WLAN_STA_WMM
)
3321 f
|= BIT(NL80211_STA_FLAG_WME
);
3322 if (flags
& WLAN_STA_SHORT_PREAMBLE
)
3323 f
|= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE
);
3324 if (flags
& WLAN_STA_MFP
)
3325 f
|= BIT(NL80211_STA_FLAG_MFP
);
3331 static int wpa_driver_nl80211_sta_set_flags(void *priv
, const u8
*addr
,
3332 int total_flags
, int flags_or
,
3335 struct wpa_driver_nl80211_data
*drv
= priv
;
3336 struct nl_msg
*msg
, *flags
= NULL
;
3337 struct nl80211_sta_flag_update upd
;
3339 msg
= nlmsg_alloc();
3343 flags
= nlmsg_alloc();
3349 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0,
3350 0, NL80211_CMD_SET_STATION
, 0);
3352 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
,
3353 if_nametoindex(drv
->ifname
));
3354 NLA_PUT(msg
, NL80211_ATTR_MAC
, ETH_ALEN
, addr
);
3357 * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3358 * can be removed eventually.
3360 if (total_flags
& WLAN_STA_AUTHORIZED
)
3361 NLA_PUT_FLAG(flags
, NL80211_STA_FLAG_AUTHORIZED
);
3363 if (total_flags
& WLAN_STA_WMM
)
3364 NLA_PUT_FLAG(flags
, NL80211_STA_FLAG_WME
);
3366 if (total_flags
& WLAN_STA_SHORT_PREAMBLE
)
3367 NLA_PUT_FLAG(flags
, NL80211_STA_FLAG_SHORT_PREAMBLE
);
3369 if (total_flags
& WLAN_STA_MFP
)
3370 NLA_PUT_FLAG(flags
, NL80211_STA_FLAG_MFP
);
3372 if (nla_put_nested(msg
, NL80211_ATTR_STA_FLAGS
, flags
))
3373 goto nla_put_failure
;
3375 os_memset(&upd
, 0, sizeof(upd
));
3376 upd
.mask
= sta_flags_nl80211(flags_or
| ~flags_and
);
3377 upd
.set
= sta_flags_nl80211(flags_or
);
3378 NLA_PUT(msg
, NL80211_ATTR_STA_FLAGS2
, sizeof(upd
), &upd
);
3382 return send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
3388 #endif /* CONFIG_AP || HOSTAPD */
3392 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data
*drv
,
3393 struct wpa_driver_associate_params
*params
)
3395 if (wpa_driver_nl80211_set_mode(drv
, params
->mode
) ||
3396 wpa_driver_nl80211_set_freq(drv
, params
->freq
, 0, 0)) {
3397 nl80211_remove_monitor_interface(drv
);
3401 /* TODO: setup monitor interface (and add code somewhere to remove this
3402 * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
3406 #endif /* CONFIG_AP */
3409 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data
*drv
)
3414 msg
= nlmsg_alloc();
3418 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0, 0,
3419 NL80211_CMD_LEAVE_IBSS
, 0);
3420 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, drv
->ifindex
);
3421 ret
= send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
3424 wpa_printf(MSG_DEBUG
, "nl80211: Leave IBSS failed: ret=%d "
3425 "(%s)", ret
, strerror(-ret
));
3426 goto nla_put_failure
;
3430 wpa_printf(MSG_DEBUG
, "nl80211: Leave IBSS request sent successfully");
3438 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data
*drv
,
3439 struct wpa_driver_associate_params
*params
)
3445 wpa_printf(MSG_DEBUG
, "nl80211: Join IBSS (ifindex=%d)", drv
->ifindex
);
3447 if (wpa_driver_nl80211_set_mode(drv
, params
->mode
)) {
3448 wpa_printf(MSG_INFO
, "nl80211: Failed to set interface into "
3454 msg
= nlmsg_alloc();
3458 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0, 0,
3459 NL80211_CMD_JOIN_IBSS
, 0);
3460 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, drv
->ifindex
);
3462 if (params
->ssid
== NULL
|| params
->ssid_len
> sizeof(drv
->ssid
))
3463 goto nla_put_failure
;
3465 wpa_hexdump_ascii(MSG_DEBUG
, " * SSID",
3466 params
->ssid
, params
->ssid_len
);
3467 NLA_PUT(msg
, NL80211_ATTR_SSID
, params
->ssid_len
,
3469 os_memcpy(drv
->ssid
, params
->ssid
, params
->ssid_len
);
3470 drv
->ssid_len
= params
->ssid_len
;
3472 wpa_printf(MSG_DEBUG
, " * freq=%d", params
->freq
);
3473 NLA_PUT_U32(msg
, NL80211_ATTR_WIPHY_FREQ
, params
->freq
);
3475 ret
= nl80211_set_conn_keys(params
, msg
);
3477 goto nla_put_failure
;
3479 if (params
->wpa_ie
) {
3480 wpa_hexdump(MSG_DEBUG
,
3481 " * Extra IEs for Beacon/Probe Response frames",
3482 params
->wpa_ie
, params
->wpa_ie_len
);
3483 NLA_PUT(msg
, NL80211_ATTR_IE
, params
->wpa_ie_len
,
3487 ret
= send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
3490 wpa_printf(MSG_DEBUG
, "nl80211: Join IBSS failed: ret=%d (%s)",
3491 ret
, strerror(-ret
));
3493 if (ret
== -EALREADY
&& count
== 1) {
3494 wpa_printf(MSG_DEBUG
, "nl80211: Retry IBSS join after "
3496 nl80211_leave_ibss(drv
);
3501 goto nla_put_failure
;
3504 wpa_printf(MSG_DEBUG
, "nl80211: Join IBSS request sent successfully");
3512 static int wpa_driver_nl80211_connect(
3513 struct wpa_driver_nl80211_data
*drv
,
3514 struct wpa_driver_associate_params
*params
)
3517 enum nl80211_auth_type type
;
3520 msg
= nlmsg_alloc();
3524 wpa_printf(MSG_DEBUG
, "nl80211: Connect (ifindex=%d)", drv
->ifindex
);
3525 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0, 0,
3526 NL80211_CMD_CONNECT
, 0);
3528 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, drv
->ifindex
);
3529 if (params
->bssid
) {
3530 wpa_printf(MSG_DEBUG
, " * bssid=" MACSTR
,
3531 MAC2STR(params
->bssid
));
3532 NLA_PUT(msg
, NL80211_ATTR_MAC
, ETH_ALEN
, params
->bssid
);
3535 wpa_printf(MSG_DEBUG
, " * freq=%d", params
->freq
);
3536 NLA_PUT_U32(msg
, NL80211_ATTR_WIPHY_FREQ
, params
->freq
);
3539 wpa_hexdump_ascii(MSG_DEBUG
, " * SSID",
3540 params
->ssid
, params
->ssid_len
);
3541 NLA_PUT(msg
, NL80211_ATTR_SSID
, params
->ssid_len
,
3543 if (params
->ssid_len
> sizeof(drv
->ssid
))
3544 goto nla_put_failure
;
3545 os_memcpy(drv
->ssid
, params
->ssid
, params
->ssid_len
);
3546 drv
->ssid_len
= params
->ssid_len
;
3548 wpa_hexdump(MSG_DEBUG
, " * IEs", params
->wpa_ie
, params
->wpa_ie_len
);
3550 NLA_PUT(msg
, NL80211_ATTR_IE
, params
->wpa_ie_len
,
3553 if (params
->auth_alg
& AUTH_ALG_OPEN_SYSTEM
)
3554 type
= NL80211_AUTHTYPE_OPEN_SYSTEM
;
3555 else if (params
->auth_alg
& AUTH_ALG_SHARED_KEY
)
3556 type
= NL80211_AUTHTYPE_SHARED_KEY
;
3557 else if (params
->auth_alg
& AUTH_ALG_LEAP
)
3558 type
= NL80211_AUTHTYPE_NETWORK_EAP
;
3559 else if (params
->auth_alg
& AUTH_ALG_FT
)
3560 type
= NL80211_AUTHTYPE_FT
;
3562 goto nla_put_failure
;
3564 wpa_printf(MSG_DEBUG
, " * Auth Type %d", type
);
3565 NLA_PUT_U32(msg
, NL80211_ATTR_AUTH_TYPE
, type
);
3567 if (params
->wpa_ie
&& params
->wpa_ie_len
) {
3568 enum nl80211_wpa_versions ver
;
3570 if (params
->wpa_ie
[0] == WLAN_EID_RSN
)
3571 ver
= NL80211_WPA_VERSION_2
;
3573 ver
= NL80211_WPA_VERSION_1
;
3575 wpa_printf(MSG_DEBUG
, " * WPA Version %d", ver
);
3576 NLA_PUT_U32(msg
, NL80211_ATTR_WPA_VERSIONS
, ver
);
3579 if (params
->pairwise_suite
!= CIPHER_NONE
) {
3582 switch (params
->pairwise_suite
) {
3584 cipher
= WLAN_CIPHER_SUITE_WEP40
;
3587 cipher
= WLAN_CIPHER_SUITE_WEP104
;
3590 cipher
= WLAN_CIPHER_SUITE_CCMP
;
3594 cipher
= WLAN_CIPHER_SUITE_TKIP
;
3597 NLA_PUT_U32(msg
, NL80211_ATTR_CIPHER_SUITES_PAIRWISE
, cipher
);
3600 if (params
->group_suite
!= CIPHER_NONE
) {
3603 switch (params
->group_suite
) {
3605 cipher
= WLAN_CIPHER_SUITE_WEP40
;
3608 cipher
= WLAN_CIPHER_SUITE_WEP104
;
3611 cipher
= WLAN_CIPHER_SUITE_CCMP
;
3615 cipher
= WLAN_CIPHER_SUITE_TKIP
;
3618 NLA_PUT_U32(msg
, NL80211_ATTR_CIPHER_SUITE_GROUP
, cipher
);
3621 if (params
->key_mgmt_suite
== KEY_MGMT_802_1X
||
3622 params
->key_mgmt_suite
== KEY_MGMT_PSK
) {
3623 int mgmt
= WLAN_AKM_SUITE_PSK
;
3625 switch (params
->key_mgmt_suite
) {
3626 case KEY_MGMT_802_1X
:
3627 mgmt
= WLAN_AKM_SUITE_8021X
;
3631 mgmt
= WLAN_AKM_SUITE_PSK
;
3634 NLA_PUT_U32(msg
, NL80211_ATTR_AKM_SUITES
, mgmt
);
3637 ret
= nl80211_set_conn_keys(params
, msg
);
3639 goto nla_put_failure
;
3641 ret
= send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
3644 wpa_printf(MSG_DEBUG
, "nl80211: MLME connect failed: ret=%d "
3645 "(%s)", ret
, strerror(-ret
));
3646 goto nla_put_failure
;
3649 wpa_printf(MSG_DEBUG
, "nl80211: Connect request send successfully");
3658 static int wpa_driver_nl80211_associate(
3659 void *priv
, struct wpa_driver_associate_params
*params
)
3661 struct wpa_driver_nl80211_data
*drv
= priv
;
3666 if (params
->mode
== IEEE80211_MODE_AP
)
3667 return wpa_driver_nl80211_ap(drv
, params
);
3668 #endif /* CONFIG_AP */
3670 if (params
->mode
== IEEE80211_MODE_IBSS
)
3671 return wpa_driver_nl80211_ibss(drv
, params
);
3673 if (!(drv
->capa
.flags
& WPA_DRIVER_FLAGS_SME
)) {
3674 if (wpa_driver_nl80211_set_mode(drv
, params
->mode
) < 0)
3676 return wpa_driver_nl80211_connect(drv
, params
);
3679 drv
->associated
= 0;
3681 msg
= nlmsg_alloc();
3685 wpa_printf(MSG_DEBUG
, "nl80211: Associate (ifindex=%d)",
3687 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0, 0,
3688 NL80211_CMD_ASSOCIATE
, 0);
3690 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, drv
->ifindex
);
3691 if (params
->bssid
) {
3692 wpa_printf(MSG_DEBUG
, " * bssid=" MACSTR
,
3693 MAC2STR(params
->bssid
));
3694 NLA_PUT(msg
, NL80211_ATTR_MAC
, ETH_ALEN
, params
->bssid
);
3697 wpa_printf(MSG_DEBUG
, " * freq=%d", params
->freq
);
3698 NLA_PUT_U32(msg
, NL80211_ATTR_WIPHY_FREQ
, params
->freq
);
3701 wpa_hexdump_ascii(MSG_DEBUG
, " * SSID",
3702 params
->ssid
, params
->ssid_len
);
3703 NLA_PUT(msg
, NL80211_ATTR_SSID
, params
->ssid_len
,
3705 if (params
->ssid_len
> sizeof(drv
->ssid
))
3706 goto nla_put_failure
;
3707 os_memcpy(drv
->ssid
, params
->ssid
, params
->ssid_len
);
3708 drv
->ssid_len
= params
->ssid_len
;
3710 wpa_hexdump(MSG_DEBUG
, " * IEs", params
->wpa_ie
, params
->wpa_ie_len
);
3712 NLA_PUT(msg
, NL80211_ATTR_IE
, params
->wpa_ie_len
,
3715 #ifdef CONFIG_IEEE80211W
3716 if (params
->mgmt_frame_protection
== MGMT_FRAME_PROTECTION_REQUIRED
)
3717 NLA_PUT_U32(msg
, NL80211_ATTR_USE_MFP
, NL80211_MFP_REQUIRED
);
3718 #endif /* CONFIG_IEEE80211W */
3720 NLA_PUT_FLAG(msg
, NL80211_ATTR_CONTROL_PORT
);
3722 if (params
->prev_bssid
) {
3723 wpa_printf(MSG_DEBUG
, " * prev_bssid=" MACSTR
,
3724 MAC2STR(params
->prev_bssid
));
3725 NLA_PUT(msg
, NL80211_ATTR_PREV_BSSID
, ETH_ALEN
,
3726 params
->prev_bssid
);
3729 ret
= send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
3732 wpa_printf(MSG_DEBUG
, "nl80211: MLME command failed: ret=%d "
3733 "(%s)", ret
, strerror(-ret
));
3734 goto nla_put_failure
;
3737 wpa_printf(MSG_DEBUG
, "nl80211: Association request send "
3746 static int nl80211_set_mode(struct wpa_driver_nl80211_data
*drv
,
3747 int ifindex
, int mode
)
3752 msg
= nlmsg_alloc();
3756 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0,
3757 0, NL80211_CMD_SET_INTERFACE
, 0);
3758 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, ifindex
);
3759 NLA_PUT_U32(msg
, NL80211_ATTR_IFTYPE
, mode
);
3761 ret
= send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
3765 wpa_printf(MSG_DEBUG
, "nl80211: Failed to set interface %d to mode %d:"
3766 " %d (%s)", ifindex
, mode
, ret
, strerror(-ret
));
3771 static int wpa_driver_nl80211_set_mode(void *priv
, int mode
)
3773 struct wpa_driver_nl80211_data
*drv
= priv
;
3779 nlmode
= NL80211_IFTYPE_STATION
;
3782 nlmode
= NL80211_IFTYPE_ADHOC
;
3785 nlmode
= NL80211_IFTYPE_AP
;
3791 if (nl80211_set_mode(drv
, drv
->ifindex
, nlmode
) == 0) {
3792 drv
->nlmode
= nlmode
;
3797 if (nlmode
== drv
->nlmode
) {
3799 goto done
; /* Already in the requested mode */
3802 /* mac80211 doesn't allow mode changes while the device is up, so
3803 * take the device down, try to set the mode again, and bring the
3806 if (hostapd_set_iface_flags(drv
, drv
->ifname
, 0) == 0) {
3807 /* Try to set the mode again while the interface is down */
3808 ret
= nl80211_set_mode(drv
, drv
->ifindex
, nlmode
);
3809 if (hostapd_set_iface_flags(drv
, drv
->ifname
, 1))
3814 drv
->nlmode
= nlmode
;
3817 #if defined(CONFIG_AP) || defined(HOSTAPD)
3818 if (!ret
&& nlmode
== NL80211_IFTYPE_AP
) {
3819 /* Setup additional AP mode functionality if needed */
3820 if (drv
->monitor_ifidx
< 0 &&
3821 nl80211_create_monitor_interface(drv
))
3823 } else if (!ret
&& nlmode
!= NL80211_IFTYPE_AP
) {
3824 /* Remove additional AP mode functionality */
3825 nl80211_remove_monitor_interface(drv
);
3827 #endif /* CONFIG_AP || HOSTAPD */
3833 static int wpa_driver_nl80211_get_capa(void *priv
,
3834 struct wpa_driver_capa
*capa
)
3836 struct wpa_driver_nl80211_data
*drv
= priv
;
3837 if (!drv
->has_capability
)
3839 os_memcpy(capa
, &drv
->capa
, sizeof(*capa
));
3844 static int wpa_driver_nl80211_set_operstate(void *priv
, int state
)
3846 struct wpa_driver_nl80211_data
*drv
= priv
;
3848 wpa_printf(MSG_DEBUG
, "%s: operstate %d->%d (%s)",
3849 __func__
, drv
->operstate
, state
, state
? "UP" : "DORMANT");
3850 drv
->operstate
= state
;
3851 return wpa_driver_nl80211_send_oper_ifla(
3852 drv
, -1, state
? IF_OPER_UP
: IF_OPER_DORMANT
);
3856 static int wpa_driver_nl80211_set_supp_port(void *priv
, int authorized
)
3858 struct wpa_driver_nl80211_data
*drv
= priv
;
3860 struct nl80211_sta_flag_update upd
;
3862 msg
= nlmsg_alloc();
3866 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0,
3867 0, NL80211_CMD_SET_STATION
, 0);
3869 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
,
3870 if_nametoindex(drv
->ifname
));
3871 NLA_PUT(msg
, NL80211_ATTR_MAC
, ETH_ALEN
, drv
->bssid
);
3873 os_memset(&upd
, 0, sizeof(upd
));
3874 upd
.mask
= BIT(NL80211_STA_FLAG_AUTHORIZED
);
3876 upd
.set
= BIT(NL80211_STA_FLAG_AUTHORIZED
);
3877 NLA_PUT(msg
, NL80211_ATTR_STA_FLAGS2
, sizeof(upd
), &upd
);
3879 return send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
3887 static struct i802_bss
* get_bss(struct wpa_driver_nl80211_data
*drv
,
3890 struct i802_bss
*bss
= &drv
->bss
;
3892 if (ifindex
== bss
->ifindex
)
3896 wpa_printf(MSG_DEBUG
, "nl80211: get_bss(%d) failed", ifindex
);
3901 static void add_ifidx(struct wpa_driver_nl80211_data
*drv
, int ifidx
)
3906 wpa_printf(MSG_DEBUG
, "nl80211: Add own interface ifindex %d",
3908 for (i
= 0; i
< drv
->num_if_indices
; i
++) {
3909 if (drv
->if_indices
[i
] == 0) {
3910 drv
->if_indices
[i
] = ifidx
;
3915 if (drv
->if_indices
!= drv
->default_if_indices
)
3916 old
= drv
->if_indices
;
3920 drv
->if_indices
= realloc(old
,
3921 sizeof(int) * (drv
->num_if_indices
+ 1));
3922 if (!drv
->if_indices
) {
3924 drv
->if_indices
= drv
->default_if_indices
;
3926 drv
->if_indices
= old
;
3927 wpa_printf(MSG_ERROR
, "Failed to reallocate memory for "
3929 wpa_printf(MSG_ERROR
, "Ignoring EAPOL on interface %d", ifidx
);
3932 drv
->if_indices
[drv
->num_if_indices
] = ifidx
;
3933 drv
->num_if_indices
++;
3937 static void del_ifidx(struct wpa_driver_nl80211_data
*drv
, int ifidx
)
3941 for (i
= 0; i
< drv
->num_if_indices
; i
++) {
3942 if (drv
->if_indices
[i
] == ifidx
) {
3943 drv
->if_indices
[i
] = 0;
3950 static int have_ifidx(struct wpa_driver_nl80211_data
*drv
, int ifidx
)
3954 for (i
= 0; i
< drv
->num_if_indices
; i
++)
3955 if (drv
->if_indices
[i
] == ifidx
)
3962 static inline int min_int(int a
, int b
)
3970 static int get_key_handler(struct nl_msg
*msg
, void *arg
)
3972 struct nlattr
*tb
[NL80211_ATTR_MAX
+ 1];
3973 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
3975 nla_parse(tb
, NL80211_ATTR_MAX
, genlmsg_attrdata(gnlh
, 0),
3976 genlmsg_attrlen(gnlh
, 0), NULL
);
3979 * TODO: validate the key index and mac address!
3980 * Otherwise, there's a race condition as soon as
3981 * the kernel starts sending key notifications.
3984 if (tb
[NL80211_ATTR_KEY_SEQ
])
3985 memcpy(arg
, nla_data(tb
[NL80211_ATTR_KEY_SEQ
]),
3986 min_int(nla_len(tb
[NL80211_ATTR_KEY_SEQ
]), 6));
3991 static int i802_get_seqnum(const char *iface
, void *priv
, const u8
*addr
,
3994 struct wpa_driver_nl80211_data
*drv
= priv
;
3997 msg
= nlmsg_alloc();
4001 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0,
4002 0, NL80211_CMD_GET_KEY
, 0);
4005 NLA_PUT(msg
, NL80211_ATTR_MAC
, ETH_ALEN
, addr
);
4006 NLA_PUT_U8(msg
, NL80211_ATTR_KEY_IDX
, idx
);
4007 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, if_nametoindex(iface
));
4011 return send_and_recv_msgs(drv
, msg
, get_key_handler
, seq
);
4017 static int i802_set_rate_sets(void *priv
, int *supp_rates
, int *basic_rates
,
4020 struct wpa_driver_nl80211_data
*drv
= priv
;
4022 u8 rates
[NL80211_MAX_SUPP_RATES
];
4026 msg
= nlmsg_alloc();
4030 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0, 0,
4031 NL80211_CMD_SET_BSS
, 0);
4033 for (i
= 0; i
< NL80211_MAX_SUPP_RATES
&& basic_rates
[i
] >= 0; i
++)
4034 rates
[rates_len
++] = basic_rates
[i
] / 5;
4036 NLA_PUT(msg
, NL80211_ATTR_BSS_BASIC_RATES
, rates_len
, rates
);
4038 /* TODO: multi-BSS support */
4039 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, if_nametoindex(drv
->ifname
));
4041 return send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
4047 /* Set kernel driver on given frequency (MHz) */
4048 static int i802_set_freq(void *priv
, struct hostapd_freq_params
*freq
)
4050 struct wpa_driver_nl80211_data
*drv
= priv
;
4051 return wpa_driver_nl80211_set_freq(drv
, freq
->freq
, freq
->ht_enabled
,
4052 freq
->sec_channel_offset
);
4056 static int i802_set_rts(void *priv
, int rts
)
4058 struct wpa_driver_nl80211_data
*drv
= priv
;
4063 msg
= nlmsg_alloc();
4072 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0,
4073 0, NL80211_CMD_SET_WIPHY
, 0);
4074 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, drv
->ifindex
);
4075 NLA_PUT_U32(msg
, NL80211_ATTR_WIPHY_RTS_THRESHOLD
, val
);
4077 ret
= send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
4081 wpa_printf(MSG_DEBUG
, "nl80211: Failed to set RTS threshold %d: "
4082 "%d (%s)", rts
, ret
, strerror(-ret
));
4087 static int i802_set_frag(void *priv
, int frag
)
4089 struct wpa_driver_nl80211_data
*drv
= priv
;
4094 msg
= nlmsg_alloc();
4103 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0,
4104 0, NL80211_CMD_SET_WIPHY
, 0);
4105 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, drv
->ifindex
);
4106 NLA_PUT_U32(msg
, NL80211_ATTR_WIPHY_FRAG_THRESHOLD
, val
);
4108 ret
= send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
4112 wpa_printf(MSG_DEBUG
, "nl80211: Failed to set fragmentation threshold "
4113 "%d: %d (%s)", frag
, ret
, strerror(-ret
));
4118 static int i802_flush(void *priv
)
4120 struct wpa_driver_nl80211_data
*drv
= priv
;
4123 msg
= nlmsg_alloc();
4127 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0,
4128 0, NL80211_CMD_DEL_STATION
, 0);
4131 * XXX: FIX! this needs to flush all VLANs too
4133 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
,
4134 if_nametoindex(drv
->ifname
));
4136 return send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
4142 static int get_sta_handler(struct nl_msg
*msg
, void *arg
)
4144 struct nlattr
*tb
[NL80211_ATTR_MAX
+ 1];
4145 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
4146 struct hostap_sta_driver_data
*data
= arg
;
4147 struct nlattr
*stats
[NL80211_STA_INFO_MAX
+ 1];
4148 static struct nla_policy stats_policy
[NL80211_STA_INFO_MAX
+ 1] = {
4149 [NL80211_STA_INFO_INACTIVE_TIME
] = { .type
= NLA_U32
},
4150 [NL80211_STA_INFO_RX_BYTES
] = { .type
= NLA_U32
},
4151 [NL80211_STA_INFO_TX_BYTES
] = { .type
= NLA_U32
},
4152 [NL80211_STA_INFO_RX_PACKETS
] = { .type
= NLA_U32
},
4153 [NL80211_STA_INFO_TX_PACKETS
] = { .type
= NLA_U32
},
4156 nla_parse(tb
, NL80211_ATTR_MAX
, genlmsg_attrdata(gnlh
, 0),
4157 genlmsg_attrlen(gnlh
, 0), NULL
);
4160 * TODO: validate the interface and mac address!
4161 * Otherwise, there's a race condition as soon as
4162 * the kernel starts sending station notifications.
4165 if (!tb
[NL80211_ATTR_STA_INFO
]) {
4166 wpa_printf(MSG_DEBUG
, "sta stats missing!");
4169 if (nla_parse_nested(stats
, NL80211_STA_INFO_MAX
,
4170 tb
[NL80211_ATTR_STA_INFO
],
4172 wpa_printf(MSG_DEBUG
, "failed to parse nested attributes!");
4176 if (stats
[NL80211_STA_INFO_INACTIVE_TIME
])
4177 data
->inactive_msec
=
4178 nla_get_u32(stats
[NL80211_STA_INFO_INACTIVE_TIME
]);
4179 if (stats
[NL80211_STA_INFO_RX_BYTES
])
4180 data
->rx_bytes
= nla_get_u32(stats
[NL80211_STA_INFO_RX_BYTES
]);
4181 if (stats
[NL80211_STA_INFO_TX_BYTES
])
4182 data
->tx_bytes
= nla_get_u32(stats
[NL80211_STA_INFO_TX_BYTES
]);
4183 if (stats
[NL80211_STA_INFO_RX_PACKETS
])
4185 nla_get_u32(stats
[NL80211_STA_INFO_RX_PACKETS
]);
4186 if (stats
[NL80211_STA_INFO_TX_PACKETS
])
4188 nla_get_u32(stats
[NL80211_STA_INFO_TX_PACKETS
]);
4193 static int i802_read_sta_data(void *priv
, struct hostap_sta_driver_data
*data
,
4196 struct wpa_driver_nl80211_data
*drv
= priv
;
4199 os_memset(data
, 0, sizeof(*data
));
4200 msg
= nlmsg_alloc();
4204 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0,
4205 0, NL80211_CMD_GET_STATION
, 0);
4207 NLA_PUT(msg
, NL80211_ATTR_MAC
, ETH_ALEN
, addr
);
4208 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, if_nametoindex(drv
->ifname
));
4210 return send_and_recv_msgs(drv
, msg
, get_sta_handler
, data
);
4216 static int i802_set_tx_queue_params(void *priv
, int queue
, int aifs
,
4217 int cw_min
, int cw_max
, int burst_time
)
4219 struct wpa_driver_nl80211_data
*drv
= priv
;
4221 struct nlattr
*txq
, *params
;
4223 msg
= nlmsg_alloc();
4227 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0,
4228 0, NL80211_CMD_SET_WIPHY
, 0);
4230 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, if_nametoindex(drv
->ifname
));
4232 txq
= nla_nest_start(msg
, NL80211_ATTR_WIPHY_TXQ_PARAMS
);
4234 goto nla_put_failure
;
4236 /* We are only sending parameters for a single TXQ at a time */
4237 params
= nla_nest_start(msg
, 1);
4239 goto nla_put_failure
;
4241 NLA_PUT_U8(msg
, NL80211_TXQ_ATTR_QUEUE
, queue
);
4242 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4243 * 32 usec, so need to convert the value here. */
4244 NLA_PUT_U16(msg
, NL80211_TXQ_ATTR_TXOP
, (burst_time
* 100 + 16) / 32);
4245 NLA_PUT_U16(msg
, NL80211_TXQ_ATTR_CWMIN
, cw_min
);
4246 NLA_PUT_U16(msg
, NL80211_TXQ_ATTR_CWMAX
, cw_max
);
4247 NLA_PUT_U8(msg
, NL80211_TXQ_ATTR_AIFS
, aifs
);
4249 nla_nest_end(msg
, params
);
4251 nla_nest_end(msg
, txq
);
4253 if (send_and_recv_msgs(drv
, msg
, NULL
, NULL
) == 0)
4260 static int i802_bss_add(void *priv
, const char *ifname
, const u8
*bssid
)
4262 struct wpa_driver_nl80211_data
*drv
= priv
;
4264 struct i802_bss
*bss
;
4266 bss
= os_zalloc(sizeof(*bss
));
4270 ifidx
= nl80211_create_iface(priv
, ifname
, NL80211_IFTYPE_AP
, bssid
);
4275 bss
->ifindex
= ifidx
;
4276 if (hostapd_set_iface_flags(priv
, ifname
, 1)) {
4277 nl80211_remove_iface(priv
, ifidx
);
4281 bss
->next
= drv
->bss
.next
;
4282 drv
->bss
.next
= bss
;
4287 static int i802_bss_remove(void *priv
, const char *ifname
)
4289 struct wpa_driver_nl80211_data
*drv
= priv
;
4290 struct i802_bss
*bss
, *prev
;
4291 int ifindex
= if_nametoindex(ifname
);
4292 nl80211_remove_iface(priv
, ifindex
);
4294 bss
= drv
->bss
.next
;
4296 if (ifindex
== bss
->ifindex
) {
4297 prev
->next
= bss
->next
;
4308 static int i802_set_bss(void *priv
, int cts
, int preamble
, int slot
)
4310 struct wpa_driver_nl80211_data
*drv
= priv
;
4313 msg
= nlmsg_alloc();
4317 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0, 0,
4318 NL80211_CMD_SET_BSS
, 0);
4321 NLA_PUT_U8(msg
, NL80211_ATTR_BSS_CTS_PROT
, cts
);
4323 NLA_PUT_U8(msg
, NL80211_ATTR_BSS_SHORT_PREAMBLE
, preamble
);
4325 NLA_PUT_U8(msg
, NL80211_ATTR_BSS_SHORT_SLOT_TIME
, slot
);
4327 /* TODO: multi-BSS support */
4328 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
, if_nametoindex(drv
->ifname
));
4330 return send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
4336 static int i802_set_cts_protect(void *priv
, int value
)
4338 return i802_set_bss(priv
, value
, -1, -1);
4342 static int i802_set_preamble(void *priv
, int value
)
4344 return i802_set_bss(priv
, -1, value
, -1);
4348 static int i802_set_short_slot_time(void *priv
, int value
)
4350 return i802_set_bss(priv
, -1, -1, value
);
4354 static enum nl80211_iftype
i802_if_type(enum hostapd_driver_if_type type
)
4357 case HOSTAPD_IF_VLAN
:
4358 return NL80211_IFTYPE_AP_VLAN
;
4364 static int i802_if_add(const char *iface
, void *priv
,
4365 enum hostapd_driver_if_type type
, char *ifname
,
4368 if (nl80211_create_iface(priv
, ifname
, i802_if_type(type
), addr
) < 0)
4374 static int i802_if_remove(void *priv
, enum hostapd_driver_if_type type
,
4375 const char *ifname
, const u8
*addr
)
4377 nl80211_remove_iface(priv
, if_nametoindex(ifname
));
4382 static int i802_set_sta_vlan(void *priv
, const u8
*addr
,
4383 const char *ifname
, int vlan_id
)
4385 struct wpa_driver_nl80211_data
*drv
= priv
;
4388 msg
= nlmsg_alloc();
4392 genlmsg_put(msg
, 0, 0, genl_family_get_id(drv
->nl80211
), 0,
4393 0, NL80211_CMD_SET_STATION
, 0);
4395 NLA_PUT_U32(msg
, NL80211_ATTR_IFINDEX
,
4396 if_nametoindex(drv
->ifname
));
4397 NLA_PUT(msg
, NL80211_ATTR_MAC
, ETH_ALEN
, addr
);
4398 NLA_PUT_U32(msg
, NL80211_ATTR_STA_VLAN
,
4399 if_nametoindex(ifname
));
4401 return send_and_recv_msgs(drv
, msg
, NULL
, NULL
);
4407 static void handle_eapol(int sock
, void *eloop_ctx
, void *sock_ctx
)
4409 struct wpa_driver_nl80211_data
*drv
= eloop_ctx
;
4410 struct sockaddr_ll lladdr
;
4411 unsigned char buf
[3000];
4413 socklen_t fromlen
= sizeof(lladdr
);
4415 len
= recvfrom(sock
, buf
, sizeof(buf
), 0,
4416 (struct sockaddr
*)&lladdr
, &fromlen
);
4422 if (have_ifidx(drv
, lladdr
.sll_ifindex
)) {
4424 ctx
= hostapd_sta_get_bss(drv
->ctx
, lladdr
.sll_addr
);
4427 hostapd_eapol_receive(ctx
, lladdr
.sll_addr
, buf
, len
);
4432 static int i802_get_inact_sec(void *priv
, const u8
*addr
)
4434 struct hostap_sta_driver_data data
;
4437 data
.inactive_msec
= (unsigned long) -1;
4438 ret
= i802_read_sta_data(priv
, &data
, addr
);
4439 if (ret
|| data
.inactive_msec
== (unsigned long) -1)
4441 return data
.inactive_msec
/ 1000;
4445 static int i802_sta_clear_stats(void *priv
, const u8
*addr
)
4454 static int i802_sta_deauth(void *priv
, const u8
*own_addr
, const u8
*addr
,
4457 struct wpa_driver_nl80211_data
*drv
= priv
;
4458 struct ieee80211_mgmt mgmt
;
4460 memset(&mgmt
, 0, sizeof(mgmt
));
4461 mgmt
.frame_control
= IEEE80211_FC(WLAN_FC_TYPE_MGMT
,
4462 WLAN_FC_STYPE_DEAUTH
);
4463 memcpy(mgmt
.da
, addr
, ETH_ALEN
);
4464 memcpy(mgmt
.sa
, own_addr
, ETH_ALEN
);
4465 memcpy(mgmt
.bssid
, own_addr
, ETH_ALEN
);
4466 mgmt
.u
.deauth
.reason_code
= host_to_le16(reason
);
4467 return wpa_driver_nl80211_send_mlme(drv
, (u8
*) &mgmt
,
4469 sizeof(mgmt
.u
.deauth
));
4473 static int i802_sta_disassoc(void *priv
, const u8
*own_addr
, const u8
*addr
,
4476 struct wpa_driver_nl80211_data
*drv
= priv
;
4477 struct ieee80211_mgmt mgmt
;
4479 memset(&mgmt
, 0, sizeof(mgmt
));
4480 mgmt
.frame_control
= IEEE80211_FC(WLAN_FC_TYPE_MGMT
,
4481 WLAN_FC_STYPE_DISASSOC
);
4482 memcpy(mgmt
.da
, addr
, ETH_ALEN
);
4483 memcpy(mgmt
.sa
, own_addr
, ETH_ALEN
);
4484 memcpy(mgmt
.bssid
, own_addr
, ETH_ALEN
);
4485 mgmt
.u
.disassoc
.reason_code
= host_to_le16(reason
);
4486 return wpa_driver_nl80211_send_mlme(drv
, (u8
*) &mgmt
,
4488 sizeof(mgmt
.u
.disassoc
));
4492 static void *i802_init(struct hostapd_data
*hapd
,
4493 struct wpa_init_params
*params
)
4495 struct wpa_driver_nl80211_data
*drv
;
4498 drv
= wpa_driver_nl80211_init(hapd
, params
->ifname
);
4502 drv
->bss
.ifindex
= drv
->ifindex
;
4504 drv
->num_if_indices
= sizeof(drv
->default_if_indices
) / sizeof(int);
4505 drv
->if_indices
= drv
->default_if_indices
;
4506 for (i
= 0; i
< params
->num_bridge
; i
++) {
4507 if (params
->bridge
[i
])
4508 add_ifidx(drv
, if_nametoindex(params
->bridge
[i
]));
4511 /* start listening for EAPOL on the default AP interface */
4512 add_ifidx(drv
, drv
->ifindex
);
4514 if (hostapd_set_iface_flags(drv
, drv
->ifname
, 0))
4517 if (params
->bssid
) {
4518 if (set_ifhwaddr(drv
, drv
->ifname
, params
->bssid
))
4522 if (wpa_driver_nl80211_set_mode(drv
, IEEE80211_MODE_AP
)) {
4523 wpa_printf(MSG_ERROR
, "nl80211: Failed to set interface %s "
4524 "into AP mode", drv
->ifname
);
4528 if (hostapd_set_iface_flags(drv
, drv
->ifname
, 1))
4531 drv
->eapol_sock
= socket(PF_PACKET
, SOCK_DGRAM
, htons(ETH_P_PAE
));
4532 if (drv
->eapol_sock
< 0) {
4533 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
4537 if (eloop_register_read_sock(drv
->eapol_sock
, handle_eapol
, drv
, NULL
))
4539 printf("Could not register read socket for eapol\n");
4543 if (get_ifhwaddr(drv
, drv
->ifname
, params
->own_addr
))
4549 nl80211_remove_monitor_interface(drv
);
4550 if (drv
->ioctl_sock
>= 0)
4551 close(drv
->ioctl_sock
);
4553 genl_family_put(drv
->nl80211
);
4554 nl_cache_free(drv
->nl_cache
);
4555 nl_handle_destroy(drv
->nl_handle
);
4556 nl_cb_put(drv
->nl_cb
);
4563 static void i802_deinit(void *priv
)
4565 wpa_driver_nl80211_deinit(priv
);
4568 #endif /* HOSTAPD */
4571 const struct wpa_driver_ops wpa_driver_nl80211_ops
= {
4573 .desc
= "Linux nl80211/cfg80211",
4574 .get_bssid
= wpa_driver_nl80211_get_bssid
,
4575 .get_ssid
= wpa_driver_nl80211_get_ssid
,
4576 .set_key
= wpa_driver_nl80211_set_key
,
4577 .scan2
= wpa_driver_nl80211_scan
,
4578 .get_scan_results2
= wpa_driver_nl80211_get_scan_results
,
4579 .deauthenticate
= wpa_driver_nl80211_deauthenticate
,
4580 .disassociate
= wpa_driver_nl80211_disassociate
,
4581 .authenticate
= wpa_driver_nl80211_authenticate
,
4582 .associate
= wpa_driver_nl80211_associate
,
4583 .init
= wpa_driver_nl80211_init
,
4584 .deinit
= wpa_driver_nl80211_deinit
,
4585 .get_capa
= wpa_driver_nl80211_get_capa
,
4586 .set_operstate
= wpa_driver_nl80211_set_operstate
,
4587 .set_supp_port
= wpa_driver_nl80211_set_supp_port
,
4588 .set_country
= wpa_driver_nl80211_set_country
,
4589 .set_beacon
= wpa_driver_nl80211_set_beacon
,
4590 #if defined(CONFIG_AP) || defined(HOSTAPD)
4591 .send_mlme
= wpa_driver_nl80211_send_mlme
,
4592 .get_hw_feature_data
= wpa_driver_nl80211_get_hw_feature_data
,
4593 .sta_add
= wpa_driver_nl80211_sta_add
,
4594 .sta_remove
= wpa_driver_nl80211_sta_remove
,
4595 .hapd_send_eapol
= wpa_driver_nl80211_hapd_send_eapol
,
4596 .sta_set_flags
= wpa_driver_nl80211_sta_set_flags
,
4597 #endif /* CONFIG_AP || HOSTAPD */
4599 .hapd_init
= i802_init
,
4600 .hapd_deinit
= i802_deinit
,
4601 .get_seqnum
= i802_get_seqnum
,
4602 .flush
= i802_flush
,
4603 .read_sta_data
= i802_read_sta_data
,
4604 .sta_deauth
= i802_sta_deauth
,
4605 .sta_disassoc
= i802_sta_disassoc
,
4606 .get_inact_sec
= i802_get_inact_sec
,
4607 .sta_clear_stats
= i802_sta_clear_stats
,
4608 .set_freq
= i802_set_freq
,
4609 .set_rts
= i802_set_rts
,
4610 .set_frag
= i802_set_frag
,
4611 .set_rate_sets
= i802_set_rate_sets
,
4612 .set_cts_protect
= i802_set_cts_protect
,
4613 .set_preamble
= i802_set_preamble
,
4614 .set_short_slot_time
= i802_set_short_slot_time
,
4615 .set_tx_queue_params
= i802_set_tx_queue_params
,
4616 .bss_add
= i802_bss_add
,
4617 .bss_remove
= i802_bss_remove
,
4618 .if_add
= i802_if_add
,
4619 .if_remove
= i802_if_remove
,
4620 .set_sta_vlan
= i802_set_sta_vlan
,
4621 #endif /* HOSTAPD */