p2p_invitation.c revision b6e9aaf735990dc64cdb6efccc03d076768eabf3
18d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/* 28d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Wi-Fi Direct - P2P Invitation procedure 38d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Copyright (c) 2010, Atheros Communications 48d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 5c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt * This software may be distributed under the terms of the BSD license. 6c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt * See README for more details. 78d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 88d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 98d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "includes.h" 108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "common.h" 128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "common/ieee802_11_defs.h" 138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "p2p_i.h" 148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "p2p.h" 158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * p2p_build_invitation_req(struct p2p_data *p2p, 188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *peer, 198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *go_dev_addr) 208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *buf; 228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *len; 238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *dev_addr; 2461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt size_t extra = 0; 2561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 2661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 2761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt struct wpabuf *wfd_ie = p2p->wfd_ie_invitation; 2861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (wfd_ie && p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) { 2961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt size_t i; 3061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt for (i = 0; i < p2p->num_groups; i++) { 3161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt struct p2p_group *g = p2p->groups[i]; 3261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt struct wpabuf *ie; 334530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt if (os_memcmp(p2p_group_get_interface_addr(g), 344530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt p2p->inv_bssid, ETH_ALEN) != 0) 354530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt continue; 3661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt ie = p2p_group_get_wfd_ie(g); 3761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (ie) { 3861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wfd_ie = ie; 3961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt break; 4061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt } 4161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt } 4261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt } 4361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (wfd_ie) 4461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt extra = wpabuf_len(wfd_ie); 4561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 4661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 4761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt buf = wpabuf_alloc(1000 + extra); 488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (buf == NULL) 498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->dialog_token++; 528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer->dialog_token == 0) 538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->dialog_token = 1; 548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_public_action_hdr(buf, P2P_INVITATION_REQ, 558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->dialog_token); 568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = p2p_buf_add_ie_hdr(buf); 588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO || !p2p->inv_persistent) 598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_config_timeout(buf, 0, 0); 608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 6161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt p2p_buf_add_config_timeout(buf, p2p->go_timeout, 6261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt p2p->client_timeout); 638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_invitation_flags(buf, p2p->inv_persistent ? 648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt P2P_INVITATION_FLAGS_TYPE : 0); 657a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt if (p2p->inv_role != P2P_INVITE_ROLE_CLIENT || 667a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt !(peer->flags & P2P_DEV_NO_PREF_CHAN)) 677a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt p2p_buf_add_operating_channel(buf, p2p->cfg->country, 687a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt p2p->op_reg_class, 697a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt p2p->op_channel); 708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->inv_bssid_set) 718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_group_bssid(buf, p2p->inv_bssid); 72069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_buf_add_channel_list(buf, p2p->cfg->country, &p2p->channels); 738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go_dev_addr) 748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev_addr = go_dev_addr; 758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else if (p2p->inv_role == P2P_INVITE_ROLE_CLIENT) 768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev_addr = peer->info.p2p_device_addr; 778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev_addr = p2p->cfg->dev_addr; 798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_group_id(buf, dev_addr, p2p->inv_ssid, p2p->inv_ssid_len); 808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_device_info(buf, p2p, peer); 818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_update_ie_hdr(buf, len); 828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 8461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (wfd_ie) 8561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpabuf_put_buf(buf, wfd_ie); 8661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 8761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return buf; 898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * p2p_build_invitation_resp(struct p2p_data *p2p, 938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *peer, 948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dialog_token, u8 status, 958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *group_bssid, 968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 reg_class, u8 channel, 978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_channels *channels) 988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *buf; 1008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *len; 10161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt size_t extra = 0; 10261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 10361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 10461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt struct wpabuf *wfd_ie = p2p->wfd_ie_invitation; 10561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (wfd_ie && group_bssid) { 10661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt size_t i; 10761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt for (i = 0; i < p2p->num_groups; i++) { 10861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt struct p2p_group *g = p2p->groups[i]; 10961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt struct wpabuf *ie; 1104530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt if (os_memcmp(p2p_group_get_interface_addr(g), 1114530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt group_bssid, ETH_ALEN) != 0) 11261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt continue; 11361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt ie = p2p_group_get_wfd_ie(g); 11461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (ie) { 11561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wfd_ie = ie; 11661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt break; 11761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt } 11861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt } 11961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt } 12061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (wfd_ie) 12161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt extra = wpabuf_len(wfd_ie); 12261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 12361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 12461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt buf = wpabuf_alloc(1000 + extra); 1258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (buf == NULL) 1268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_public_action_hdr(buf, P2P_INVITATION_RESP, 1298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dialog_token); 1308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = p2p_buf_add_ie_hdr(buf); 1328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_status(buf, status); 1338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_config_timeout(buf, 0, 0); /* FIX */ 1348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (reg_class && channel) 1358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, p2p->cfg->country, 1368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt reg_class, channel); 1378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (group_bssid) 1388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_group_bssid(buf, group_bssid); 139069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff if (channels) 140069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_buf_add_channel_list(buf, p2p->cfg->country, channels); 1418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_update_ie_hdr(buf, len); 1428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 14461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (wfd_ie) 14561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpabuf_put_buf(buf, wfd_ie); 14661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 14761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 1488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return buf; 1498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa, 1538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t len, int rx_freq) 1548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev; 1568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_message msg; 1578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *resp = NULL; 1588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 status = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 1598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 1608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int go = 0; 1618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 group_bssid[ETH_ALEN], *bssid; 1628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int op_freq = 0; 1638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 reg_class = 0, channel = 0; 1648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_channels intersection, *channels = NULL; 1658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int persistent; 1668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(group_bssid, 0, sizeof(group_bssid)); 1688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 169b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Received Invitation Request from " MACSTR " (freq=%d)", 1708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa), rx_freq); 1718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_parse(data, len, &msg)) 1738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 1748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_get_device(p2p, sa); 1768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) { 177b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Invitation Request from unknown peer " MACSTR, 178b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt MAC2STR(sa)); 1798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 180f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (p2p_add_device(p2p, sa, rx_freq, NULL, 0, data + 1, len - 1, 181a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 0)) { 182b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Invitation Request add device failed " 1838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MACSTR, MAC2STR(sa)); 1848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 1858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 1868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_get_device(p2p, sa); 1898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev == NULL) { 190b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Reject Invitation Request from unknown peer " 191b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt MACSTR, MAC2STR(sa)); 1928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 1938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 1948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.group_id || !msg.channel_list) { 198b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory attribute missing in Invitation Request from " 199b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt MACSTR, MAC2STR(sa)); 2008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 2018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 2028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.invitation_flags) 2058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt persistent = *msg.invitation_flags & P2P_INVITATION_FLAGS_TYPE; 2068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else { 2078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Invitation Flags is a mandatory attribute starting from P2P 2088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * spec 1.06. As a backwards compatibility mechanism, assume 2098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * the request was for a persistent group if the attribute is 2108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * missing. 2118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 212b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory Invitation Flags attribute missing from Invitation Request"); 2138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt persistent = 1; 2148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_peer_channels_check(p2p, &p2p->cfg->channels, dev, 2178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.channel_list, msg.channel_list_len) < 2188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0) { 219b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No common channels found"); 2208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 2218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 2228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cfg->invitation_process) { 2258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = p2p->cfg->invitation_process( 2268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->cb_ctx, sa, msg.group_bssid, msg.group_id, 2278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.group_id + ETH_ALEN, msg.group_id_len - ETH_ALEN, 2288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &go, group_bssid, &op_freq, persistent); 2298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (op_freq) { 232b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Invitation processing forced frequency %d MHz", 233b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt op_freq); 2344b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt if (p2p_freq_to_channel(op_freq, ®_class, &channel) < 0) { 235b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unknown forced freq %d MHz from invitation_process()", 236b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt op_freq); 2378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 2388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 2398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_intersect(&p2p->cfg->channels, &dev->channels, 2428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &intersection); 2438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!p2p_channels_includes(&intersection, reg_class, channel)) 2448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 245b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "forced freq %d MHz not in the supported channels interaction", 246b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt op_freq); 2478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 2488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 2498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (status == P2P_SC_SUCCESS) 2528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt channels = &intersection; 2538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 254b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No forced channel from invitation processing - figure out best one to use"); 25591c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt 25691c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt p2p_channels_intersect(&p2p->cfg->channels, &dev->channels, 25791c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt &intersection); 25891c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt /* Default to own configuration as a starting point */ 25991c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt p2p->op_reg_class = p2p->cfg->op_reg_class; 26091c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt p2p->op_channel = p2p->cfg->op_channel; 261b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Own default op_class %d channel %d", 26291c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 26391c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt 26491c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt /* Use peer preference if specified and compatible */ 26591c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt if (msg.operating_channel) { 26691c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt int req_freq; 26791c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt req_freq = p2p_channel_to_freq( 26891c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt msg.operating_channel[3], 26991c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt msg.operating_channel[4]); 270b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Peer operating channel preference: %d MHz", 27191c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt req_freq); 27291c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt if (req_freq > 0 && 27391c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt p2p_channels_includes(&intersection, 27491c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt msg.operating_channel[3], 27591c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt msg.operating_channel[4])) { 27691c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt p2p->op_reg_class = msg.operating_channel[3]; 27791c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt p2p->op_channel = msg.operating_channel[4]; 278b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Use peer preference op_class %d channel %d", 27991c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 28091c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt } else { 281b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Cannot use peer channel preference"); 28291c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt } 28391c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt } 28491c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt 28591c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt if (!p2p_channels_includes(&intersection, p2p->op_reg_class, 28691c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt p2p->op_channel)) { 287b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Initially selected channel (op_class %d channel %d) not in channel intersection - try to reselect", 28891c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 28991c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt p2p_reselect_channel(p2p, &intersection); 290b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Re-selection result: op_class %d channel %d", 29191c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 29291c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt if (!p2p_channels_includes(&intersection, 29391c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt p2p->op_reg_class, 29491c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt p2p->op_channel)) { 295b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Peer does not support selected operating channel (reg_class=%u channel=%u)", 29691c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 29791c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 29891c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt goto fail; 29991c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt } 30044c957860ca714a86357591f39aff0bfa904c743Dmitry Shmidt } else if (!(dev->flags & P2P_DEV_FORCE_FREQ) && 30144c957860ca714a86357591f39aff0bfa904c743Dmitry Shmidt !p2p->cfg->cfg_op_channel) { 302b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Try to reselect channel selection with peer information received; previously selected op_class %u channel %u", 30344c957860ca714a86357591f39aff0bfa904c743Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 30444c957860ca714a86357591f39aff0bfa904c743Dmitry Shmidt p2p_reselect_channel(p2p, &intersection); 30591c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt } 30691c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt 3074b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt op_freq = p2p_channel_to_freq(p2p->op_reg_class, 30891c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt p2p->op_channel); 3098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (op_freq < 0) { 310b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unknown operational channel (country=%c%c reg_class=%u channel=%u)", 3118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->country[0], p2p->cfg->country[1], 31291c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 3138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 3148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 3158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 316b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Selected operating channel - %d MHz", op_freq); 3178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (status == P2P_SC_SUCCESS) { 31991c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt reg_class = p2p->op_reg_class; 32091c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt channel = p2p->op_channel; 3218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt channels = &intersection; 3228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtfail: 3268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go && status == P2P_SC_SUCCESS && !is_zero_ether_addr(group_bssid)) 3278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt bssid = group_bssid; 3288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 3298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt bssid = NULL; 3308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp = p2p_build_invitation_resp(p2p, dev, msg.dialog_token, status, 3318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt bssid, reg_class, channel, channels); 3328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (resp == NULL) 3348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto out; 3358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rx_freq > 0) 3378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = rx_freq; 3388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 3394b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt freq = p2p_channel_to_freq(p2p->cfg->reg_class, 3408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->channel); 3418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq < 0) { 342b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unknown regulatory class/channel"); 3438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto out; 3448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 3478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Store copy of invitation data to be used when processing TX status 3488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * callback for the Acton frame. 3498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 3508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(p2p->inv_sa, sa, ETH_ALEN); 3518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.group_bssid) { 3528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(p2p->inv_group_bssid, msg.group_bssid, ETH_ALEN); 3538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->inv_group_bssid_ptr = p2p->inv_group_bssid; 3548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 3558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->inv_group_bssid_ptr = NULL; 3568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.group_id_len - ETH_ALEN <= 32) { 3578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(p2p->inv_ssid, msg.group_id + ETH_ALEN, 3588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.group_id_len - ETH_ALEN); 3598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->inv_ssid_len = msg.group_id_len - ETH_ALEN; 3608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(p2p->inv_go_dev_addr, msg.group_id, ETH_ALEN); 3628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->inv_status = status; 3638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->inv_op_freq = op_freq; 3648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_PENDING_INVITATION_RESPONSE; 3668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_send_action(p2p, freq, sa, p2p->cfg->dev_addr, 3678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->dev_addr, 3688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_head(resp), wpabuf_len(resp), 200) < 0) { 369b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Failed to send Action frame"); 3708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtout: 3738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(resp); 3748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 3758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa, 3798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t len) 3808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev; 3828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_message msg; 3837a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt struct p2p_channels intersection, *channels = NULL; 3848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 385b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Received Invitation Response from " MACSTR, 3868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 3878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_get_device(p2p, sa); 3898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev == NULL) { 390b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Ignore Invitation Response from unknown peer " 3918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MACSTR, MAC2STR(sa)); 3928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 3938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev != p2p->invite_peer) { 396b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Ignore unexpected Invitation Response from peer " 3978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MACSTR, MAC2STR(sa)); 3988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 3998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_parse(data, len, &msg)) 4028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 4038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.status) { 405b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory Status attribute missing in Invitation Response from " 406b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt MACSTR, MAC2STR(sa)); 4078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 4088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 4098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4117a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt if (!msg.channel_list) { 412b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory Channel List attribute missing in Invitation Response from " 413b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt MACSTR, MAC2STR(sa)); 4147a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 4157a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt p2p_parse_free(&msg); 4167a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt return; 4177a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 4187a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt /* Try to survive without peer channel list */ 4197a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt channels = &p2p->channels; 4207a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt } else if (p2p_peer_channels_check(p2p, &p2p->channels, dev, 4217a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt msg.channel_list, 4227a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt msg.channel_list_len) < 0) { 423b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No common channels found"); 4247a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt p2p_parse_free(&msg); 4257a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt return; 4267a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt } else { 4277a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt p2p_channels_intersect(&p2p->channels, &dev->channels, 4287a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt &intersection); 4297a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt channels = &intersection; 4307a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt } 4317a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt 4328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cfg->invitation_result) 4338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->invitation_result(p2p->cfg->cb_ctx, *msg.status, 434700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt msg.group_bssid, channels, sa); 4358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 4378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_clear_timeout(p2p); 4398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_IDLE); 4408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->invite_peer = NULL; 4418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev, 4458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *go_dev_addr) 4468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *req; 4488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 4498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = dev->listen_freq > 0 ? dev->listen_freq : dev->oper_freq; 4518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq <= 0) { 452b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Listen/Operating frequency known for the peer " 453b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt MACSTR " to send Invitation Request", 4548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(dev->info.p2p_device_addr)); 4558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt req = p2p_build_invitation_req(p2p, dev, go_dev_addr); 4598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (req == NULL) 4608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 46104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (p2p->state != P2P_IDLE) 46204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p_stop_listen_for_freq(p2p, freq); 463b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Sending Invitation Request"); 4648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_INVITE); 4658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_PENDING_INVITATION_REQUEST; 4668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->invite_peer = dev; 4678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->invitation_reqs++; 4688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_send_action(p2p, freq, dev->info.p2p_device_addr, 4698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->dev_addr, dev->info.p2p_device_addr, 4708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_head(req), wpabuf_len(req), 200) < 0) { 471b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Failed to send Action frame"); 4728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Use P2P find to recover and retry */ 4738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_timeout(p2p, 0, 0); 4748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(req); 4778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 4798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid p2p_invitation_req_cb(struct p2p_data *p2p, int success) 4838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 484b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Invitation Request TX callback: success=%d", success); 4858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->invite_peer == NULL) { 487b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No pending Invite"); 4888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 4898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 4928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Use P2P find, if needed, to find the other device from its listen 4938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * channel. 4948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 4958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_INVITE); 4961a2ce111ade9563d99ed7bb8156d6148ffd6c3a3Irfan Sheriff#ifdef ANDROID_P2P 4971a2ce111ade9563d99ed7bb8156d6148ffd6c3a3Irfan Sheriff p2p_set_timeout(p2p, 0, 350000); 4981a2ce111ade9563d99ed7bb8156d6148ffd6c3a3Irfan Sheriff#else 4998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_timeout(p2p, 0, 100000); 5001a2ce111ade9563d99ed7bb8156d6148ffd6c3a3Irfan Sheriff#endif 5018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid p2p_invitation_resp_cb(struct p2p_data *p2p, int success) 5058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 506b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Invitation Response TX callback: success=%d", success); 5078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 5088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5090ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt if (!success) 510b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Assume Invitation Response was actually received by the peer even though Ack was not reported"); 5110ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt 5120ccb66edb8d2a0a397320ace3ec2a03fb0d00d5fDmitry Shmidt if (p2p->cfg->invitation_received) { 5138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->invitation_received(p2p->cfg->cb_ctx, 5148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->inv_sa, 5158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->inv_group_bssid_ptr, 5168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->inv_ssid, p2p->inv_ssid_len, 5178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->inv_go_dev_addr, 5188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->inv_status, 5198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->inv_op_freq); 5208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint p2p_invite(struct p2p_data *p2p, const u8 *peer, enum p2p_invite_role role, 5258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *bssid, const u8 *ssid, size_t ssid_len, 5268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt unsigned int force_freq, const u8 *go_dev_addr, 5277a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt int persistent_group, unsigned int pref_freq) 5288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev; 5308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 531b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Request to invite peer " MACSTR " role=%d persistent=%d " 5328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "force_freq=%u", 5338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(peer), role, persistent_group, force_freq); 5348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (bssid) 535b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Invitation for BSSID " MACSTR, MAC2STR(bssid)); 5368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go_dev_addr) { 537b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Invitation for GO Device Address " MACSTR, 5388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(go_dev_addr)); 5398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(p2p->invite_go_dev_addr_buf, go_dev_addr, ETH_ALEN); 5408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->invite_go_dev_addr = p2p->invite_go_dev_addr_buf; 5418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 5428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->invite_go_dev_addr = NULL; 543b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "Invitation for SSID", 5448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ssid, ssid_len); 5458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_get_device(p2p, peer); 5478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev == NULL || (dev->listen_freq <= 0 && dev->oper_freq <= 0)) { 548b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Cannot invite unknown P2P Device " MACSTR, 5498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(peer)); 5508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5537a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq) < 0) 5547a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt return -1; 5557a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt 5567a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt if (persistent_group && role == P2P_INVITE_ROLE_CLIENT && !force_freq && 5577a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt !pref_freq) 5587a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt dev->flags |= P2P_DEV_NO_PREF_CHAN; 5597a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt else 5607a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt dev->flags &= ~P2P_DEV_NO_PREF_CHAN; 5617a5e50a0554bee77a9da492ea3d86f46147f1671Dmitry Shmidt 5628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) { 5638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(dev->info.dev_capab & 5648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) { 565b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Cannot invite a P2P Device " MACSTR 5668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " that is in a group and is not discoverable", 5678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(peer)); 5688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* TODO: use device discoverability request through GO */ 5708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->invitation_reqs = 0; 5738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->state != P2P_IDLE) 5758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_stop_find(p2p); 5768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->inv_role = role; 5788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->inv_bssid_set = bssid != NULL; 5798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (bssid) 5808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(p2p->inv_bssid, bssid, ETH_ALEN); 5818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(p2p->inv_ssid, ssid, ssid_len); 5828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->inv_ssid_len = ssid_len; 5838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->inv_persistent = persistent_group; 5848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return p2p_invite_send(p2p, dev, go_dev_addr); 5858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 586