2 * Wi-Fi Direct - P2P group operations
3 * Copyright (c) 2009-2010, Atheros Communications
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
12 #include "common/ieee802_11_defs.h"
13 #include "common/ieee802_11_common.h"
14 #include "wps/wps_defs.h"
15 #include "wps/wps_i.h"
20 struct p2p_group_member {
21 struct p2p_group_member *next;
22 u8 addr[ETH_ALEN]; /* P2P Interface Address */
23 u8 dev_addr[ETH_ALEN]; /* P2P Device Address */
24 struct wpabuf *p2p_ie;
25 struct wpabuf *wfd_ie;
26 struct wpabuf *client_info;
31 * struct p2p_group - Internal P2P module per-group data
35 struct p2p_group_config *cfg;
36 struct p2p_group_member *members;
37 unsigned int num_members;
41 struct wpabuf *wfd_ie;
45 struct p2p_group * p2p_group_init(struct p2p_data *p2p,
46 struct p2p_group_config *config)
48 struct p2p_group *group, **groups;
50 group = os_zalloc(sizeof(*group));
54 groups = os_realloc_array(p2p->groups, p2p->num_groups + 1,
55 sizeof(struct p2p_group *));
60 groups[p2p->num_groups++] = group;
65 group->group_formation = 1;
66 group->beacon_update = 1;
67 p2p_group_update_ies(group);
68 group->cfg->idle_update(group->cfg->cb_ctx, 1);
74 static void p2p_group_free_member(struct p2p_group_member *m)
76 wpabuf_free(m->wfd_ie);
77 wpabuf_free(m->p2p_ie);
78 wpabuf_free(m->client_info);
83 static void p2p_group_free_members(struct p2p_group *group)
85 struct p2p_group_member *m, *prev;
87 group->members = NULL;
88 group->num_members = 0;
92 p2p_group_free_member(prev);
97 void p2p_group_deinit(struct p2p_group *group)
100 struct p2p_data *p2p;
107 for (g = 0; g < p2p->num_groups; g++) {
108 if (p2p->groups[g] == group) {
109 while (g + 1 < p2p->num_groups) {
110 p2p->groups[g] = p2p->groups[g + 1];
118 p2p_group_free_members(group);
120 wpabuf_free(group->noa);
121 wpabuf_free(group->wfd_ie);
126 static void p2p_client_info(struct wpabuf *ie, struct p2p_group_member *m)
128 if (m->client_info == NULL)
130 if (wpabuf_tailroom(ie) < wpabuf_len(m->client_info) + 1)
132 wpabuf_put_buf(ie, m->client_info);
136 static void p2p_group_add_common_ies(struct p2p_group *group,
139 u8 dev_capab = group->p2p->dev_capab, group_capab = 0;
142 dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
143 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
144 if (group->cfg->persistent_group) {
145 group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP;
146 if (group->cfg->persistent_group == 2)
147 group_capab |= P2P_GROUP_CAPAB_PERSISTENT_RECONN;
149 if (group->p2p->cfg->p2p_intra_bss)
150 group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST;
151 if (group->group_formation)
152 group_capab |= P2P_GROUP_CAPAB_GROUP_FORMATION;
153 if (group->p2p->cross_connect)
154 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
155 if (group->num_members >= group->cfg->max_clients)
156 group_capab |= P2P_GROUP_CAPAB_GROUP_LIMIT;
157 p2p_buf_add_capability(ie, dev_capab, group_capab);
161 static void p2p_group_add_noa(struct wpabuf *ie, struct wpabuf *noa)
165 /* Notice of Absence */
166 wpabuf_put_u8(ie, P2P_ATTR_NOTICE_OF_ABSENCE);
167 wpabuf_put_le16(ie, wpabuf_len(noa));
168 wpabuf_put_buf(ie, noa);
172 static struct wpabuf * p2p_group_encaps_probe_resp(struct wpabuf *subelems)
178 if (subelems == NULL)
181 len = wpabuf_len(subelems) + 100;
183 ie = wpabuf_alloc(len);
187 pos = wpabuf_head(subelems);
188 end = pos + wpabuf_len(subelems);
191 size_t frag_len = end - pos;
194 wpabuf_put_u8(ie, WLAN_EID_VENDOR_SPECIFIC);
195 wpabuf_put_u8(ie, 4 + frag_len);
196 wpabuf_put_be32(ie, P2P_IE_VENDOR_TYPE);
197 wpabuf_put_data(ie, pos, frag_len);
205 static struct wpabuf * p2p_group_build_beacon_ie(struct p2p_group *group)
211 #ifdef CONFIG_WIFI_DISPLAY
212 if (group->p2p->wfd_ie_beacon)
213 extra = wpabuf_len(group->p2p->wfd_ie_beacon);
214 #endif /* CONFIG_WIFI_DISPLAY */
216 ie = wpabuf_alloc(257 + extra);
220 #ifdef CONFIG_WIFI_DISPLAY
221 if (group->p2p->wfd_ie_beacon)
222 wpabuf_put_buf(ie, group->p2p->wfd_ie_beacon);
223 #endif /* CONFIG_WIFI_DISPLAY */
225 len = p2p_buf_add_ie_hdr(ie);
226 p2p_group_add_common_ies(group, ie);
227 p2p_buf_add_device_id(ie, group->p2p->cfg->dev_addr);
228 p2p_group_add_noa(ie, group->noa);
229 p2p_buf_update_ie_hdr(ie, len);
235 #ifdef CONFIG_WIFI_DISPLAY
237 struct wpabuf * p2p_group_get_wfd_ie(struct p2p_group *g)
243 struct wpabuf * wifi_display_encaps(struct wpabuf *subelems)
248 if (subelems == NULL)
251 ie = wpabuf_alloc(wpabuf_len(subelems) + 100);
255 pos = wpabuf_head(subelems);
256 end = pos + wpabuf_len(subelems);
259 size_t frag_len = end - pos;
262 wpabuf_put_u8(ie, WLAN_EID_VENDOR_SPECIFIC);
263 wpabuf_put_u8(ie, 4 + frag_len);
264 wpabuf_put_be32(ie, WFD_IE_VENDOR_TYPE);
265 wpabuf_put_data(ie, pos, frag_len);
273 static int wifi_display_add_dev_info_descr(struct wpabuf *buf,
274 struct p2p_group_member *m)
277 const u8 *dev_info = NULL;
278 const u8 *assoc_bssid = NULL;
279 const u8 *coupled_sink = NULL;
280 u8 zero_addr[ETH_ALEN];
282 if (m->wfd_ie == NULL)
285 os_memset(zero_addr, 0, ETH_ALEN);
286 pos = wpabuf_head_u8(m->wfd_ie);
287 end = pos + wpabuf_len(m->wfd_ie);
288 while (pos + 1 < end) {
293 len = WPA_GET_BE16(pos);
299 case WFD_SUBELEM_DEVICE_INFO:
304 case WFD_SUBELEM_ASSOCIATED_BSSID:
309 case WFD_SUBELEM_COUPLED_SINK:
310 if (len < 1 + ETH_ALEN)
319 if (dev_info == NULL)
322 wpabuf_put_u8(buf, 23);
323 wpabuf_put_data(buf, m->dev_addr, ETH_ALEN);
325 wpabuf_put_data(buf, assoc_bssid, ETH_ALEN);
327 wpabuf_put_data(buf, zero_addr, ETH_ALEN);
328 wpabuf_put_data(buf, dev_info, 2); /* WFD Device Info */
329 wpabuf_put_data(buf, dev_info + 4, 2); /* WFD Device Max Throughput */
331 wpabuf_put_data(buf, coupled_sink, 1 + ETH_ALEN);
333 wpabuf_put_u8(buf, 0);
334 wpabuf_put_data(buf, zero_addr, ETH_ALEN);
341 static struct wpabuf *
342 wifi_display_build_go_ie(struct p2p_group *group)
344 struct wpabuf *wfd_subelems, *wfd_ie;
345 struct p2p_group_member *m;
347 unsigned int count = 0;
349 if (!group->p2p->wfd_ie_probe_resp)
352 wfd_subelems = wpabuf_alloc(wpabuf_len(group->p2p->wfd_ie_probe_resp) +
353 group->num_members * 24 + 100);
354 if (wfd_subelems == NULL)
356 if (group->p2p->wfd_dev_info)
357 wpabuf_put_buf(wfd_subelems, group->p2p->wfd_dev_info);
358 if (group->p2p->wfd_assoc_bssid)
359 wpabuf_put_buf(wfd_subelems,
360 group->p2p->wfd_assoc_bssid);
361 if (group->p2p->wfd_coupled_sink_info)
362 wpabuf_put_buf(wfd_subelems,
363 group->p2p->wfd_coupled_sink_info);
365 /* Build WFD Session Info */
366 wpabuf_put_u8(wfd_subelems, WFD_SUBELEM_SESSION_INFO);
367 len = wpabuf_put(wfd_subelems, 2);
370 if (wifi_display_add_dev_info_descr(wfd_subelems, m))
376 /* No Wi-Fi Display clients - do not include subelement */
377 wfd_subelems->used -= 3;
379 WPA_PUT_BE16(len, (u8 *) wpabuf_put(wfd_subelems, 0) - len -
381 wpa_printf(MSG_DEBUG, "WFD: WFD Session Info: %u descriptors",
385 wfd_ie = wifi_display_encaps(wfd_subelems);
386 wpabuf_free(wfd_subelems);
391 static void wifi_display_group_update(struct p2p_group *group)
393 wpabuf_free(group->wfd_ie);
394 group->wfd_ie = wifi_display_build_go_ie(group);
397 #endif /* CONFIG_WIFI_DISPLAY */
400 static struct wpabuf * p2p_group_build_probe_resp_ie(struct p2p_group *group)
403 struct wpabuf *p2p_subelems, *ie;
404 struct p2p_group_member *m;
407 #ifdef CONFIG_WIFI_DISPLAY
409 extra += wpabuf_len(group->wfd_ie);
410 #endif /* CONFIG_WIFI_DISPLAY */
412 p2p_subelems = wpabuf_alloc(500 + extra);
413 if (p2p_subelems == NULL)
416 #ifdef CONFIG_WIFI_DISPLAY
418 wpabuf_put_buf(p2p_subelems, group->wfd_ie);
419 #endif /* CONFIG_WIFI_DISPLAY */
421 p2p_group_add_common_ies(group, p2p_subelems);
422 p2p_group_add_noa(p2p_subelems, group->noa);
424 /* P2P Device Info */
425 p2p_buf_add_device_info(p2p_subelems, group->p2p, NULL);
428 group_info = wpabuf_put(p2p_subelems, 0);
429 wpabuf_put_u8(p2p_subelems, P2P_ATTR_GROUP_INFO);
430 wpabuf_put_le16(p2p_subelems, 0); /* Length to be filled */
431 for (m = group->members; m; m = m->next)
432 p2p_client_info(p2p_subelems, m);
433 WPA_PUT_LE16(group_info + 1,
434 (u8 *) wpabuf_put(p2p_subelems, 0) - group_info - 3);
436 ie = p2p_group_encaps_probe_resp(p2p_subelems);
437 wpabuf_free(p2p_subelems);
443 void p2p_group_update_ies(struct p2p_group *group)
445 struct wpabuf *beacon_ie;
446 struct wpabuf *probe_resp_ie;
448 #ifdef CONFIG_WIFI_DISPLAY
449 wifi_display_group_update(group);
450 #endif /* CONFIG_WIFI_DISPLAY */
452 probe_resp_ie = p2p_group_build_probe_resp_ie(group);
453 if (probe_resp_ie == NULL)
455 wpa_hexdump_buf(MSG_MSGDUMP, "P2P: Update GO Probe Response P2P IE",
458 if (group->beacon_update) {
459 beacon_ie = p2p_group_build_beacon_ie(group);
461 group->beacon_update = 0;
462 wpa_hexdump_buf(MSG_MSGDUMP, "P2P: Update GO Beacon P2P IE",
467 group->cfg->ie_update(group->cfg->cb_ctx, beacon_ie, probe_resp_ie);
472 * p2p_build_client_info - Build P2P Client Info Descriptor
473 * @addr: MAC address of the peer device
474 * @p2p_ie: P2P IE from (Re)Association Request
475 * @dev_capab: Buffer for returning Device Capability
476 * @dev_addr: Buffer for returning P2P Device Address
477 * Returns: P2P Client Info Descriptor or %NULL on failure
479 * This function builds P2P Client Info Descriptor based on the information
480 * available from (Re)Association Request frame. Group owner can use this to
481 * build the P2P Group Info attribute for Probe Response frames.
483 static struct wpabuf * p2p_build_client_info(const u8 *addr,
484 struct wpabuf *p2p_ie,
485 u8 *dev_capab, u8 *dev_addr)
488 struct p2p_message msg;
495 os_memset(&msg, 0, sizeof(msg));
496 if (p2p_parse_p2p_ie(p2p_ie, &msg) ||
497 msg.capability == NULL || msg.p2p_device_info == NULL)
500 buf = wpabuf_alloc(ETH_ALEN + 1 + 1 + msg.p2p_device_info_len);
504 *dev_capab = msg.capability[0];
505 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
507 spos = msg.p2p_device_info; /* P2P Device address */
509 /* P2P Client Info Descriptor */
510 /* Length to be set */
511 len_pos = wpabuf_put(buf, 1);
512 /* P2P Device address */
513 wpabuf_put_data(buf, spos, ETH_ALEN);
514 /* P2P Interface address */
515 wpabuf_put_data(buf, addr, ETH_ALEN);
516 /* Device Capability Bitmap */
517 wpabuf_put_u8(buf, msg.capability[0]);
519 * Config Methods, Primary Device Type, Number of Secondary Device
520 * Types, Secondary Device Type List, Device Name copied from
523 wpabuf_put_data(buf, spos + ETH_ALEN,
524 msg.p2p_device_info_len - ETH_ALEN);
526 *len_pos = wpabuf_len(buf) - 1;
533 static int p2p_group_remove_member(struct p2p_group *group, const u8 *addr)
535 struct p2p_group_member *m, *prev;
543 if (os_memcmp(m->addr, addr, ETH_ALEN) == 0)
553 prev->next = m->next;
555 group->members = m->next;
556 p2p_group_free_member(m);
557 group->num_members--;
563 int p2p_group_notif_assoc(struct p2p_group *group, const u8 *addr,
564 const u8 *ie, size_t len)
566 struct p2p_group_member *m;
571 m = os_zalloc(sizeof(*m));
574 os_memcpy(m->addr, addr, ETH_ALEN);
575 m->p2p_ie = ieee802_11_vendor_ie_concat(ie, len, P2P_IE_VENDOR_TYPE);
577 m->client_info = p2p_build_client_info(addr, m->p2p_ie,
581 #ifdef CONFIG_WIFI_DISPLAY
582 m->wfd_ie = ieee802_11_vendor_ie_concat(ie, len, WFD_IE_VENDOR_TYPE);
583 #endif /* CONFIG_WIFI_DISPLAY */
585 p2p_group_remove_member(group, addr);
587 m->next = group->members;
589 group->num_members++;
590 wpa_msg(group->p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Add client " MACSTR
591 " to group (p2p=%d wfd=%d client_info=%d); num_members=%u/%u",
592 MAC2STR(addr), m->p2p_ie ? 1 : 0, m->wfd_ie ? 1 : 0,
593 m->client_info ? 1 : 0,
594 group->num_members, group->cfg->max_clients);
595 if (group->num_members == group->cfg->max_clients)
596 group->beacon_update = 1;
597 p2p_group_update_ies(group);
598 if (group->num_members == 1)
599 group->cfg->idle_update(group->cfg->cb_ctx, 0);
605 struct wpabuf * p2p_group_assoc_resp_ie(struct p2p_group *group, u8 status)
611 #ifdef CONFIG_WIFI_DISPLAY
613 extra = wpabuf_len(group->wfd_ie);
614 #endif /* CONFIG_WIFI_DISPLAY */
617 * (Re)Association Response - P2P IE
618 * Status attribute (shall be present when association request is
620 * Extended Listen Timing (may be present)
622 resp = wpabuf_alloc(20 + extra);
626 #ifdef CONFIG_WIFI_DISPLAY
628 wpabuf_put_buf(resp, group->wfd_ie);
629 #endif /* CONFIG_WIFI_DISPLAY */
631 rlen = p2p_buf_add_ie_hdr(resp);
632 if (status != P2P_SC_SUCCESS)
633 p2p_buf_add_status(resp, status);
634 p2p_buf_update_ie_hdr(resp, rlen);
640 void p2p_group_notif_disassoc(struct p2p_group *group, const u8 *addr)
642 if (p2p_group_remove_member(group, addr)) {
643 wpa_msg(group->p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Remove "
644 "client " MACSTR " from group; num_members=%u/%u",
645 MAC2STR(addr), group->num_members,
646 group->cfg->max_clients);
647 if (group->num_members == group->cfg->max_clients - 1)
648 group->beacon_update = 1;
649 p2p_group_update_ies(group);
650 if (group->num_members == 0)
651 group->cfg->idle_update(group->cfg->cb_ctx, 1);
657 * p2p_match_dev_type_member - Match client device type with requested type
659 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
660 * Returns: 1 on match, 0 on mismatch
662 * This function can be used to match the Requested Device Type attribute in
663 * WPS IE with the device types of a group member for deciding whether a GO
664 * should reply to a Probe Request frame.
666 static int p2p_match_dev_type_member(struct p2p_group_member *m,
670 struct wps_parse_attr attr;
673 if (m->client_info == NULL || wps == NULL)
676 pos = wpabuf_head(m->client_info);
677 end = pos + wpabuf_len(m->client_info);
679 pos += 1 + 2 * ETH_ALEN + 1 + 2;
680 if (end - pos < WPS_DEV_TYPE_LEN + 1)
683 if (wps_parse_msg(wps, &attr))
684 return 1; /* assume no Requested Device Type attributes */
686 if (attr.num_req_dev_type == 0)
687 return 1; /* no Requested Device Type attributes -> match */
689 if (dev_type_list_match(pos, attr.req_dev_type, attr.num_req_dev_type))
690 return 1; /* Match with client Primary Device Type */
692 pos += WPS_DEV_TYPE_LEN;
694 if (end - pos < num_sec * WPS_DEV_TYPE_LEN)
696 while (num_sec > 0) {
698 if (dev_type_list_match(pos, attr.req_dev_type,
699 attr.num_req_dev_type))
700 return 1; /* Match with client Secondary Device Type */
701 pos += WPS_DEV_TYPE_LEN;
704 /* No matching device type found */
709 int p2p_group_match_dev_type(struct p2p_group *group, struct wpabuf *wps)
711 struct p2p_group_member *m;
713 if (p2p_match_dev_type(group->p2p, wps))
714 return 1; /* Match with own device type */
716 for (m = group->members; m; m = m->next) {
717 if (p2p_match_dev_type_member(m, wps))
718 return 1; /* Match with group client device type */
721 /* No match with Requested Device Type */
726 int p2p_group_match_dev_id(struct p2p_group *group, struct wpabuf *p2p)
728 struct p2p_group_member *m;
729 struct p2p_message msg;
731 os_memset(&msg, 0, sizeof(msg));
732 if (p2p_parse_p2p_ie(p2p, &msg))
733 return 1; /* Failed to parse - assume no filter on Device ID */
736 return 1; /* No filter on Device ID */
738 if (os_memcmp(msg.device_id, group->p2p->cfg->dev_addr, ETH_ALEN) == 0)
739 return 1; /* Match with our P2P Device Address */
741 for (m = group->members; m; m = m->next) {
742 if (os_memcmp(msg.device_id, m->dev_addr, ETH_ALEN) == 0)
743 return 1; /* Match with group client P2P Device Address */
746 /* No match with Device ID */
751 void p2p_group_notif_formation_done(struct p2p_group *group)
755 group->group_formation = 0;
756 group->beacon_update = 1;
757 p2p_group_update_ies(group);
761 int p2p_group_notif_noa(struct p2p_group *group, const u8 *noa,
765 wpabuf_free(group->noa);
769 if (wpabuf_size(group->noa) >= noa_len) {
770 group->noa->used = 0;
771 wpabuf_put_data(group->noa, noa, noa_len);
773 wpabuf_free(group->noa);
779 group->noa = wpabuf_alloc_copy(noa, noa_len);
780 if (group->noa == NULL)
785 group->beacon_update = 1;
786 p2p_group_update_ies(group);
791 static struct p2p_group_member * p2p_group_get_client(struct p2p_group *group,
794 struct p2p_group_member *m;
796 for (m = group->members; m; m = m->next) {
797 if (os_memcmp(dev_id, m->dev_addr, ETH_ALEN) == 0)
805 static struct p2p_group_member * p2p_group_get_client_iface(
806 struct p2p_group *group, const u8 *interface_addr)
808 struct p2p_group_member *m;
810 for (m = group->members; m; m = m->next) {
811 if (os_memcmp(interface_addr, m->addr, ETH_ALEN) == 0)
819 const u8 * p2p_group_get_dev_addr(struct p2p_group *group, const u8 *addr)
821 struct p2p_group_member *m;
825 m = p2p_group_get_client_iface(group, addr);
826 if (m && !is_zero_ether_addr(m->dev_addr))
832 static struct wpabuf * p2p_build_go_disc_req(void)
836 buf = wpabuf_alloc(100);
840 p2p_buf_add_action_hdr(buf, P2P_GO_DISC_REQ, 0);
846 int p2p_group_go_discover(struct p2p_group *group, const u8 *dev_id,
847 const u8 *searching_dev, int rx_freq)
849 struct p2p_group_member *m;
851 struct p2p_data *p2p = group->p2p;
854 m = p2p_group_get_client(group, dev_id);
855 if (m == NULL || m->client_info == NULL) {
856 wpa_printf(MSG_DEBUG, "P2P: Requested client was not in this "
858 MAC2STR(group->cfg->interface_addr));
862 if (!(m->dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
863 wpa_printf(MSG_DEBUG, "P2P: Requested client does not support "
864 "client discoverability");
868 wpa_printf(MSG_DEBUG, "P2P: Schedule GO Discoverability Request to be "
869 "sent to " MACSTR, MAC2STR(dev_id));
871 req = p2p_build_go_disc_req();
875 /* TODO: Should really use group operating frequency here */
878 p2p->pending_action_state = P2P_PENDING_GO_DISC_REQ;
879 if (p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, m->addr,
880 group->cfg->interface_addr,
881 group->cfg->interface_addr,
882 wpabuf_head(req), wpabuf_len(req), 200) < 0)
884 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
885 "P2P: Failed to send Action frame");
894 const u8 * p2p_group_get_interface_addr(struct p2p_group *group)
896 return group->cfg->interface_addr;
900 u8 p2p_group_presence_req(struct p2p_group *group,
901 const u8 *client_interface_addr,
902 const u8 *noa, size_t noa_len)
904 struct p2p_group_member *m;
908 m = p2p_group_get_client_iface(group, client_interface_addr);
909 if (m == NULL || m->client_info == NULL) {
910 wpa_printf(MSG_DEBUG, "P2P: Client was not in this group");
911 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
914 wpa_hexdump(MSG_DEBUG, "P2P: Presence Request NoA", noa, noa_len);
916 if (group->p2p->cfg->get_noa)
917 curr_noa_len = group->p2p->cfg->get_noa(
918 group->p2p->cfg->cb_ctx, group->cfg->interface_addr,
919 curr_noa, sizeof(curr_noa));
922 if (curr_noa_len < 0)
923 wpa_printf(MSG_DEBUG, "P2P: Failed to fetch current NoA");
924 else if (curr_noa_len == 0)
925 wpa_printf(MSG_DEBUG, "P2P: No NoA being advertized");
927 wpa_hexdump(MSG_DEBUG, "P2P: Current NoA", curr_noa,
930 /* TODO: properly process request and store copy */
931 if (curr_noa_len > 0 || curr_noa_len == -1)
932 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
934 return P2P_SC_SUCCESS;
938 unsigned int p2p_get_group_num_members(struct p2p_group *group)
940 return group->num_members;
944 const u8 * p2p_iterate_group_members(struct p2p_group *group, void **next)
946 struct p2p_group_member *iter = *next;
949 iter = group->members;
962 int p2p_group_is_client_connected(struct p2p_group *group, const u8 *dev_addr)
964 struct p2p_group_member *m;
966 for (m = group->members; m; m = m->next) {
967 if (os_memcmp(m->dev_addr, dev_addr, ETH_ALEN) == 0)
975 int p2p_group_is_group_id_match(struct p2p_group *group, const u8 *group_id,
978 if (group_id_len != ETH_ALEN + group->cfg->ssid_len)
980 if (os_memcmp(group_id, group->p2p->cfg->dev_addr, ETH_ALEN) != 0)
982 return os_memcmp(group_id + ETH_ALEN, group->cfg->ssid,
983 group->cfg->ssid_len) == 0;