p2p_go_neg.c revision 04949598a23f501be6eec21697465fd46a28840a
18d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/* 28d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Wi-Fi Direct - P2P Group Owner Negotiation 38d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Copyright (c) 2009-2010, 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 "wps/wps_defs.h" 148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "p2p_i.h" 158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "p2p.h" 168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int p2p_go_det(u8 own_intent, u8 peer_value) 198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 peer_intent = peer_value >> 1; 218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (own_intent == peer_intent) { 228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (own_intent == P2P_MAX_GO_INTENT) 238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; /* both devices want to become GO */ 248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Use tie breaker bit to determine GO */ 268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return (peer_value & 0x01) ? 0 : 1; 278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return own_intent > peer_intent; 308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own, 348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev, 358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *channel_list, size_t channel_list_len) 368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *pos, *end; 388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_channels *ch; 398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t channels; 408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_channels intersection; 418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ch = &dev->channels; 438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(ch, 0, sizeof(*ch)); 448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = channel_list; 458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt end = channel_list + channel_list_len; 468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (end - pos < 3) 488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(dev->country, pos, 3); 508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "P2P: Peer country", pos, 3); 518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos[2] != 0x04 && os_memcmp(pos, p2p->cfg->country, 2) != 0) { 528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, 538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mismatching country (ours=%c%c peer's=%c%c)", 548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->country[0], p2p->cfg->country[1], 558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos[0], pos[1]); 568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 3; 598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (pos + 2 < end) { 618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_reg_class *cl = &ch->reg_class[ch->reg_classes]; 628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cl->reg_class = *pos++; 638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos + 1 + pos[0] > end) { 648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, 658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Invalid peer Channel List"); 668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt channels = *pos++; 698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cl->channels = channels > P2P_MAX_REG_CLASS_CHANNELS ? 708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt P2P_MAX_REG_CLASS_CHANNELS : channels; 718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(cl->channel, pos, cl->channels); 728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += channels; 738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ch->reg_classes++; 748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ch->reg_classes == P2P_MAX_REG_CLASSES) 758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_intersect(own, &dev->channels, &intersection); 798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Own reg_classes %d " 808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "peer reg_classes %d intersection reg_classes %d", 818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (int) own->reg_classes, 828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (int) dev->channels.reg_classes, 838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (int) intersection.reg_classes); 848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (intersection.reg_classes == 0) { 858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, 868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No common channels found"); 878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int p2p_peer_channels(struct p2p_data *p2p, struct p2p_device *dev, 948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *channel_list, size_t channel_list_len) 958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return p2p_peer_channels_check(p2p, &p2p->channels, dev, 978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt channel_list, channel_list_len); 988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10104949598a23f501be6eec21697465fd46a28840aDmitry Shmidtu16 p2p_wps_method_pw_id(enum p2p_wps_method wps_method) 1028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (wps_method) { 1048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PIN_DISPLAY: 1058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return DEV_PW_REGISTRAR_SPECIFIED; 1068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PIN_KEYPAD: 1078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return DEV_PW_USER_SPECIFIED; 1088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PBC: 1098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return DEV_PW_PUSHBUTTON; 1108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 1118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return DEV_PW_DEFAULT; 1128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic const char * p2p_wps_method_str(enum p2p_wps_method wps_method) 1178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (wps_method) { 1198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PIN_DISPLAY: 1208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "Display"; 1218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PIN_KEYPAD: 1228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "Keypad"; 1238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PBC: 1248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "PBC"; 1258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 1268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "??"; 1278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * p2p_build_go_neg_req(struct p2p_data *p2p, 1328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *peer) 1338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *buf; 1358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *len; 1368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 group_capab; 1378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf = wpabuf_alloc(1000); 1398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (buf == NULL) 1408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->dialog_token++; 1438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer->dialog_token == 0) 1448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->dialog_token = 1; 1458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_public_action_hdr(buf, P2P_GO_NEG_REQ, peer->dialog_token); 1468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = p2p_buf_add_ie_hdr(buf); 1488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab = 0; 1491f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 1508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP; 1511f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 1521f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_RECONN; 1531f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 1548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cross_connect) 1558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 1568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cfg->p2p_intra_bss) 1578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; 15804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p_buf_add_capability(buf, p2p->dev_capab & 15904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 16004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt group_capab); 1618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_go_intent(buf, (p2p->go_intent << 1) | 1628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->next_tie_breaker); 1638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->next_tie_breaker = !p2p->next_tie_breaker; 1648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_config_timeout(buf, 100, 20); 1658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_listen_channel(buf, p2p->cfg->country, p2p->cfg->reg_class, 1668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->channel); 1678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->ext_listen_interval) 1688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period, 1698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ext_listen_interval); 1708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_intended_addr(buf, p2p->intended_addr); 1718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_channel_list(buf, p2p->cfg->country, &p2p->channels); 1728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_device_info(buf, p2p, peer); 1738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, p2p->cfg->country, 1748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 1758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_update_ie_hdr(buf, len); 1768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* WPS IE with Device Password ID attribute */ 1788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_build_wps_ie(p2p, buf, p2p_wps_method_pw_id(peer->wps_method), 0); 1798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return buf; 1818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev) 1858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *req; 1878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 1888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 18904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (dev->flags & P2P_DEV_PD_BEFORE_GO_NEG) { 19004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt u16 config_method; 19104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 19204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt "P2P: Use PD-before-GO-Neg workaround for " MACSTR, 19304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt MAC2STR(dev->info.p2p_device_addr)); 19404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (dev->wps_method == WPS_PIN_DISPLAY) 19504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt config_method = WPS_CONFIG_KEYPAD; 19604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt else if (dev->wps_method == WPS_PIN_KEYPAD) 19704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt config_method = WPS_CONFIG_DISPLAY; 19804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt else if (dev->wps_method == WPS_PBC) 19904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt config_method = WPS_CONFIG_PUSHBUTTON; 20004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt else 20104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt return -1; 20204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt return p2p_prov_disc_req(p2p, dev->info.p2p_device_addr, 20304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt config_method, 0, 0); 20404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 20504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt 2068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = dev->listen_freq > 0 ? dev->listen_freq : dev->oper_freq; 2078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq <= 0) { 2088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Listen/Operating frequency known for the " 2108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "peer " MACSTR " to send GO Negotiation Request", 2118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(dev->info.p2p_device_addr)); 2128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt req = p2p_build_go_neg_req(p2p, dev); 2168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (req == NULL) 2178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Sending GO Negotiation Request"); 2208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_CONNECT); 2218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_PENDING_GO_NEG_REQUEST; 2228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->go_neg_peer = dev; 2238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags |= P2P_DEV_WAIT_GO_NEG_RESPONSE; 2248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->connect_reqs++; 2258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_send_action(p2p, freq, dev->info.p2p_device_addr, 2268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->dev_addr, dev->info.p2p_device_addr, 2278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_head(req), wpabuf_len(req), 200) < 0) { 2288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Failed to send Action frame"); 2308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Use P2P find to recover and retry */ 2318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_timeout(p2p, 0, 0); 23204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } else 23304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt dev->go_neg_req_sent++; 2348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(req); 2368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * p2p_build_go_neg_resp(struct p2p_data *p2p, 2428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *peer, 2438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dialog_token, u8 status, 2448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 tie_breaker) 2458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *buf; 2478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *len; 2488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 group_capab; 2498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Building GO Negotiation Response"); 2528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf = wpabuf_alloc(1000); 2538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (buf == NULL) 2548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 2558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_public_action_hdr(buf, P2P_GO_NEG_RESP, dialog_token); 2578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = p2p_buf_add_ie_hdr(buf); 2598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_status(buf, status); 2608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab = 0; 2618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer && peer->go_state == LOCAL_GO) { 2621f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 2638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP; 2641f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 2651f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt group_capab |= 2661f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt P2P_GROUP_CAPAB_PERSISTENT_RECONN; 2671f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 2688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cross_connect) 2698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 2708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cfg->p2p_intra_bss) 2718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; 2728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 27304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p_buf_add_capability(buf, p2p->dev_capab & 27404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 27504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt group_capab); 2768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_go_intent(buf, (p2p->go_intent << 1) | tie_breaker); 2778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_config_timeout(buf, 100, 20); 2788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer && peer->go_state == REMOTE_GO) { 2798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Omit Operating " 2808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Channel attribute"); 2818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 2828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, p2p->cfg->country, 2838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class, 2848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel); 2858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_intended_addr(buf, p2p->intended_addr); 2878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (status || peer == NULL) { 2888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_channel_list(buf, p2p->cfg->country, 2898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &p2p->channels); 2908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (peer->go_state == REMOTE_GO) { 2918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_channel_list(buf, p2p->cfg->country, 2928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &p2p->channels); 2938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 2948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_channels res; 2958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_intersect(&p2p->channels, &peer->channels, 2968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &res); 2978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_channel_list(buf, p2p->cfg->country, &res); 2988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_device_info(buf, p2p, peer); 3008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer && peer->go_state == LOCAL_GO) { 3018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_group_id(buf, p2p->cfg->dev_addr, p2p->ssid, 3028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len); 3038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_update_ie_hdr(buf, len); 3058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* WPS IE with Device Password ID attribute */ 3078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_build_wps_ie(p2p, buf, 3088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_pw_id(peer ? peer->wps_method : 3098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_NOT_READY), 0); 3108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return buf; 3128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void p2p_reselect_channel(struct p2p_data *p2p, 3168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_channels *intersection) 3178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_reg_class *cl; 3198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 3208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 op_reg_class, op_channel; 32104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt unsigned int i; 3228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Selected operating " 3248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "channel (reg_class %u channel %u) not acceptable to the " 3258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "peer", p2p->op_reg_class, p2p->op_channel); 3268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* First, try to pick the best channel from another band */ 3288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = p2p_channel_to_freq(p2p->cfg->country, p2p->op_reg_class, 3298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel); 3308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq >= 2400 && freq < 2500 && p2p->best_freq_5 > 0 && 3318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_5, 3328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &op_reg_class, &op_channel) == 0 && 3338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_includes(intersection, op_reg_class, op_channel)) { 3348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Pick best 5 GHz " 3358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "channel (reg_class %u channel %u) from intersection", 3368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt op_reg_class, op_channel); 3378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class = op_reg_class; 3388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel = op_channel; 3398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 3408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq >= 4900 && freq < 6000 && p2p->best_freq_24 > 0 && 3438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_24, 3448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &op_reg_class, &op_channel) == 0 && 3458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_includes(intersection, op_reg_class, op_channel)) { 3468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Pick best 2.4 GHz " 3478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "channel (reg_class %u channel %u) from intersection", 3488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt op_reg_class, op_channel); 3498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class = op_reg_class; 3508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel = op_channel; 3518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 3528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 35404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt /* Select channel with highest preference if the peer supports it */ 35504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt for (i = 0; p2p->cfg->pref_chan && i < p2p->cfg->num_pref_chan; i++) { 35604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (p2p_channels_includes(intersection, 35704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->cfg->pref_chan[i].op_class, 35804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->cfg->pref_chan[i].chan)) { 35904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->op_reg_class = p2p->cfg->pref_chan[i].op_class; 36004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->op_channel = p2p->cfg->pref_chan[i].chan; 36104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Pick " 36204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt "highest preferred chnnel (op_class %u " 36304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt "channel %u) from intersection", 36404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->op_reg_class, p2p->op_channel); 36504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt return; 36604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 36704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 36804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt 3698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 3708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Fall back to whatever is included in the channel intersection since 3718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * no better options seems to be available. 3728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 3738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cl = &intersection->reg_class[0]; 3748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Pick another channel " 3758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(reg_class %u channel %u) from intersection", 3768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cl->reg_class, cl->channel[0]); 3778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class = cl->reg_class; 3788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel = cl->channel[0]; 3798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa, 3838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t len, int rx_freq) 3848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev = NULL; 3868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *resp; 3878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_message msg; 3888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 status = P2P_SC_FAIL_INVALID_PARAMS; 3898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int tie_breaker = 0; 3908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 3918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 3938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Received GO Negotiation Request from " MACSTR 3948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(freq=%d)", MAC2STR(sa), rx_freq); 3958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_parse(data, len, &msg)) 3978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 3988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.capability) { 4008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory Capability attribute missing from GO " 4028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Negotiation Request"); 4038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 4048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 4058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 4068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.go_intent) 4098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tie_breaker = *msg.go_intent & 0x01; 4108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else { 4118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory GO Intent attribute missing from GO " 4138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Negotiation Request"); 4148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 4158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 4168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 4178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.config_timeout) { 4208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory Configuration Timeout attribute " 4228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "missing from GO Negotiation Request"); 4238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 4248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 4258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 4268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.listen_channel) { 4298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Listen Channel attribute received"); 4318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 4328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.operating_channel) { 4348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Operating Channel attribute received"); 4368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 4378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.channel_list) { 4398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Channel List attribute received"); 4418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 4428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.intended_addr) { 4448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Intended P2P Interface Address attribute " 4468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "received"); 4478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 4488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.p2p_device_info) { 4508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No P2P Device Info attribute received"); 4528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 4538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(msg.p2p_device_addr, sa, ETH_ALEN) != 0) { 4568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unexpected GO Negotiation Request SA=" MACSTR 4588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " != dev_addr=" MACSTR, 4598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa), MAC2STR(msg.p2p_device_addr)); 4608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 4618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_get_device(p2p, sa); 4648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.status && *msg.status) { 4668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unexpected Status attribute (%d) in GO " 4688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Negotiation Request", *msg.status); 4698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 4708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev == NULL) 4738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_add_dev_from_go_neg_req(p2p, sa, &msg); 4748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) 4758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_add_dev_info(p2p, sa, dev, &msg); 4768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev && dev->flags & P2P_DEV_USER_REJECTED) { 4778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: User has rejected this peer"); 4798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_REJECTED_BY_USER; 4808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (dev == NULL || dev->wps_method == WPS_NOT_READY) { 4818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Not ready for GO negotiation with " MACSTR, 4838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 4848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 4858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev) 4868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE; 4878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->go_neg_req_rx(p2p->cfg->cb_ctx, sa, 4888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dev_password_id); 4898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (p2p->go_neg_peer && p2p->go_neg_peer != dev) { 4908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Already in Group Formation with another peer"); 4928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 4938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 4948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int go; 4958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!p2p->go_neg_peer) { 4978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting " 4988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "GO Negotiation with previously authorized " 4998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "peer"); 5008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(dev->flags & P2P_DEV_FORCE_FREQ)) { 5018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Use default channel settings"); 5038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class = p2p->cfg->op_reg_class; 5048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel = p2p->cfg->op_channel; 5058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(&p2p->channels, &p2p->cfg->channels, 5068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(struct p2p_channels)); 5078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 5088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Use previously configured " 5108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "forced channel settings"); 5118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags &= ~P2P_DEV_NOT_YET_READY; 5158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.go_intent) { 5178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No GO Intent attribute received"); 5198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((*msg.go_intent >> 1) > P2P_MAX_GO_INTENT) { 5228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Invalid GO Intent value (%u) received", 5248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *msg.go_intent >> 1); 5258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->go_neg_req_sent && 5298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(sa, p2p->cfg->dev_addr, ETH_ALEN) > 0) { 5308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Do not reply since peer has higher " 5328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "address and GO Neg Request already sent"); 5338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 5348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 5358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt go = p2p_go_det(p2p->go_intent, *msg.go_intent); 5388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go < 0) { 5398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Incompatible GO Intent"); 5418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_BOTH_GO_INTENT_15; 5428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_peer_channels(p2p, dev, msg.channel_list, 5468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.channel_list_len) < 0) { 5478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No common channels found"); 5498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 5508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (msg.dev_password_id) { 5548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_REGISTRAR_SPECIFIED: 5558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: PIN from peer Display"); 5578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PIN_KEYPAD) { 5588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: We have wps_method=%s -> " 5608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "incompatible", 5618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 5628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 5638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 5668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_USER_SPECIFIED: 5678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Peer entered PIN on Keypad"); 5691f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (dev->wps_method != WPS_PIN_DISPLAY) { 5708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: We have wps_method=%s -> " 5728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "incompatible", 5738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 5748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 5758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 5788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_PUSHBUTTON: 5798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Peer using pushbutton"); 5818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PBC) { 5828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: We have wps_method=%s -> " 5848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "incompatible", 5858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 5868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 5878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 5908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 5918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unsupported Device Password ID %d", 5938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dev_password_id); 5948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 5958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go) { 5998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_channels intersection; 6008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t i; 6018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_intersect(&p2p->channels, &dev->channels, 6028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &intersection); 6038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (intersection.reg_classes == 0 || 6048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt intersection.reg_class[0].channels == 0) { 6058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 6068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No common channels found"); 6088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (i = 0; i < intersection.reg_classes; i++) { 6118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_reg_class *c; 6128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt c = &intersection.reg_class[i]; 6138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "P2P: reg_class %u", 6148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt c->reg_class); 6158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "P2P: channels", 6168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt c->channel, c->channels); 6178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!p2p_channels_includes(&intersection, 6198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class, 6208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel)) 6218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_reselect_channel(p2p, &intersection); 6228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6231f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (!p2p->ssid_set) { 6241f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt p2p_build_ssid(p2p, p2p->ssid, &p2p->ssid_len); 6251f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt p2p->ssid_set = 1; 6261f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 6278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_state = go ? LOCAL_GO : REMOTE_GO; 6308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->oper_freq = p2p_channel_to_freq((const char *) 6318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel, 6328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel[3], 6338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel[4]); 6348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer operating " 6358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "channel preference: %d MHz", dev->oper_freq); 6368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.config_timeout) { 6388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_timeout = msg.config_timeout[0]; 6398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->client_timeout = msg.config_timeout[1]; 6408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: GO Negotiation with " MACSTR, MAC2STR(sa)); 6448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->state != P2P_IDLE) 6458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_stop_find_for_freq(p2p, rx_freq); 6468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_GO_NEG); 6478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_clear_timeout(p2p); 6488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->dialog_token = msg.dialog_token; 6498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(dev->intended_addr, msg.intended_addr, ETH_ALEN); 6508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->go_neg_peer = dev; 6518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_SUCCESS; 6528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtfail: 6558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev) 6568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->status = status; 6578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp = p2p_build_go_neg_resp(p2p, dev, msg.dialog_token, status, 6588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !tie_breaker); 6598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 6608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (resp == NULL) 6618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 6628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Sending GO Negotiation Response"); 6648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rx_freq > 0) 6658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = rx_freq; 6668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 6678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = p2p_channel_to_freq(p2p->cfg->country, 6688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->reg_class, 6698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->channel); 6708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq < 0) { 6718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unknown regulatory class/channel"); 6738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(resp); 6748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 6758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (status == P2P_SC_SUCCESS) { 6778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_PENDING_GO_NEG_RESPONSE; 6788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags |= P2P_DEV_WAIT_GO_NEG_CONFIRM; 67904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (os_memcmp(sa, p2p->cfg->dev_addr, ETH_ALEN) < 0) { 68004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt /* 68104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * Peer has smaller address, so the GO Negotiation 68204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * Response from us is expected to complete 68304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * negotiation. Ignore a GO Negotiation Response from 68404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * the peer if it happens to be received after this 68504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * point due to a race condition in GO Negotiation 68604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * Request transmission and processing. 68704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt */ 68804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 68904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 6908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 6918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = 6928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt P2P_PENDING_GO_NEG_RESPONSE_FAILURE; 6938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_send_action(p2p, freq, sa, p2p->cfg->dev_addr, 6948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->dev_addr, 6958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_head(resp), wpabuf_len(resp), 200) < 0) { 6968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Failed to send Action frame"); 6988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(resp); 7018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * p2p_build_go_neg_conf(struct p2p_data *p2p, 7058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *peer, 7068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dialog_token, u8 status, 7078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *resp_chan, int go) 7088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *buf; 7108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *len; 7118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_channels res; 7128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 group_capab; 7138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 7158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Building GO Negotiation Confirm"); 7168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf = wpabuf_alloc(1000); 7178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (buf == NULL) 7188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 7198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_public_action_hdr(buf, P2P_GO_NEG_CONF, dialog_token); 7218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = p2p_buf_add_ie_hdr(buf); 7238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_status(buf, status); 7248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab = 0; 7258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer->go_state == LOCAL_GO) { 7261f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 7278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP; 7281f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 7291f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt group_capab |= 7301f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt P2P_GROUP_CAPAB_PERSISTENT_RECONN; 7311f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 7328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cross_connect) 7338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 7348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cfg->p2p_intra_bss) 7358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; 7368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 73704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p_buf_add_capability(buf, p2p->dev_capab & 73804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 73904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt group_capab); 7408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go || resp_chan == NULL) 7418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, p2p->cfg->country, 7428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class, 7438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel); 7448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 7458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, (const char *) resp_chan, 7468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp_chan[3], resp_chan[4]); 7478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_intersect(&p2p->channels, &peer->channels, &res); 7488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_channel_list(buf, p2p->cfg->country, &res); 7498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go) { 7508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_group_id(buf, p2p->cfg->dev_addr, p2p->ssid, 7518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len); 7528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_update_ie_hdr(buf, len); 7548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return buf; 7568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa, 7608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t len, int rx_freq) 7618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev; 7638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *conf; 7648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int go = -1; 7658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_message msg; 7668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 status = P2P_SC_SUCCESS; 7678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 7688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 7708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Received GO Negotiation Response from " MACSTR 7718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " (freq=%d)", MAC2STR(sa), rx_freq); 7728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_get_device(p2p, sa); 7738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev == NULL || dev->wps_method == WPS_NOT_READY || 7748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev != p2p->go_neg_peer) { 7758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 7768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Not ready for GO negotiation with " MACSTR, 7778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 7788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 7798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_parse(data, len, &msg)) 7828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 7838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE)) { 7858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 7868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Was not expecting GO Negotiation Response - " 7878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "ignore"); 7888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 7898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 7908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 7928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.dialog_token != dev->dialog_token) { 7948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 7958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unexpected Dialog Token %u (expected %u)", 7968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dialog_token, dev->dialog_token); 7978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 7988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 7998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.status) { 8028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Status attribute received"); 8048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 8058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 8068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*msg.status) { 8088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: GO Negotiation rejected: status %d", 8108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *msg.status); 8118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_neg_req_sent = 0; 8128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*msg.status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 8138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Wait for the peer to become ready for " 8158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "GO Negotiation"); 8168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags |= P2P_DEV_NOT_YET_READY; 8178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->wait_count = 0; 8188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_WAIT_PEER_IDLE); 8198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_timeout(p2p, 0, 0); 8208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 8218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Stop GO Negotiation attempt"); 8238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_go_neg_failed(p2p, dev, *msg.status); 8248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 8268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 8278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 8288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.capability) { 8318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory Capability attribute missing from GO " 8338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Negotiation Response"); 8348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 8358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 8368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 8378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 8388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.p2p_device_info) { 8418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory P2P Device Info attribute missing " 8438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "from GO Negotiation Response"); 8448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 8458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 8468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 8478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 8488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.intended_addr) { 8518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Intended P2P Interface Address attribute " 8538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "received"); 8548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 8558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 8568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.go_intent) { 8598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No GO Intent attribute received"); 8618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 8628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 8638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((*msg.go_intent >> 1) > P2P_MAX_GO_INTENT) { 8658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Invalid GO Intent value (%u) received", 8678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *msg.go_intent >> 1); 8688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 8698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 8708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt go = p2p_go_det(p2p->go_intent, *msg.go_intent); 8738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go < 0) { 8748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Incompatible GO Intent"); 8768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 8778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 8788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!go && msg.group_id) { 8818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Store SSID for Provisioning step */ 8828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = msg.group_id_len - ETH_ALEN; 8838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(p2p->ssid, msg.group_id + ETH_ALEN, p2p->ssid_len); 8848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (!go) { 8858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory P2P Group ID attribute missing from " 8878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "GO Negotiation Response"); 8888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = 0; 8898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 8908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 8918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 8928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 8938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.config_timeout) { 8968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory Configuration Timeout attribute " 8988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "missing from GO Negotiation Response"); 8998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 9008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 9038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 9048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_timeout = msg.config_timeout[0]; 9058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->client_timeout = msg.config_timeout[1]; 9068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.operating_channel && !go) { 9098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 9108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Note: P2P Client may omit Operating Channel attribute to 9118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * indicate it does not have a preference. 9128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 9138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Operating Channel attribute received"); 9158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.channel_list) { 9198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Channel List attribute received"); 9218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_peer_channels(p2p, dev, msg.channel_list, 9268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.channel_list_len) < 0) { 9278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No common channels found"); 9298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 9308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.operating_channel) { 9348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->oper_freq = p2p_channel_to_freq((const char *) 9358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel, 9368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel[3], 9378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel[4]); 9388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer operating " 9398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "channel preference: %d MHz", dev->oper_freq); 9408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 9418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->oper_freq = 0; 9428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (msg.dev_password_id) { 9448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_REGISTRAR_SPECIFIED: 9458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: PIN from peer Display"); 9478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PIN_KEYPAD) { 9488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: We have wps_method=%s -> " 9508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "incompatible", 9518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 9528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 9538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 9568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_USER_SPECIFIED: 9578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Peer entered PIN on Keypad"); 9591f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (dev->wps_method != WPS_PIN_DISPLAY) { 9608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: We have wps_method=%s -> " 9628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "incompatible", 9638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 9648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 9658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 9688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_PUSHBUTTON: 9698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Peer using pushbutton"); 9718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PBC) { 9728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: We have wps_method=%s -> " 9748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "incompatible", 9758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 9768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 9778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 9808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 9818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unsupported Device Password ID %d", 9838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dev_password_id); 9848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 9858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go) { 9898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_channels intersection; 9908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t i; 9918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_intersect(&p2p->channels, &dev->channels, 9928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &intersection); 9938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (intersection.reg_classes == 0 || 9948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt intersection.reg_class[0].channels == 0) { 9958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 9968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No common channels found"); 9988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (i = 0; i < intersection.reg_classes; i++) { 10018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_reg_class *c; 10028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt c = &intersection.reg_class[i]; 10038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "P2P: reg_class %u", 10048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt c->reg_class); 10058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "P2P: channels", 10068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt c->channel, c->channels); 10078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!p2p_channels_includes(&intersection, p2p->op_reg_class, 10098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel)) 10108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_reselect_channel(p2p, &intersection); 10118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10121f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (!p2p->ssid_set) { 10131f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt p2p_build_ssid(p2p, p2p->ssid, &p2p->ssid_len); 10141f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt p2p->ssid_set = 1; 10151f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 10168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_GO_NEG); 10198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_clear_timeout(p2p); 10208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: GO Negotiation with " MACSTR, MAC2STR(sa)); 10238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(dev->intended_addr, msg.intended_addr, ETH_ALEN); 10248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtfail: 10268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt conf = p2p_build_go_neg_conf(p2p, dev, msg.dialog_token, status, 10278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel, go); 10288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 10298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (conf == NULL) 10308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 10318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Sending GO Negotiation Confirm"); 10338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (status == P2P_SC_SUCCESS) { 10348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM; 10358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_state = go ? LOCAL_GO : REMOTE_GO; 10368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 10378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_NO_PENDING_ACTION; 10388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rx_freq > 0) 10398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = rx_freq; 10408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 10418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = dev->listen_freq; 10428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_send_action(p2p, freq, sa, p2p->cfg->dev_addr, sa, 104304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt wpabuf_head(conf), wpabuf_len(conf), 0) < 0) { 10448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Failed to send Action frame"); 10468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_go_neg_failed(p2p, dev, -1); 10478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(conf); 10498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 10508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa, 10538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t len) 10548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 10558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev; 10568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_message msg; 10578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Received GO Negotiation Confirm from " MACSTR, 10608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 10618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_get_device(p2p, sa); 10628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev == NULL || dev->wps_method == WPS_NOT_READY || 10638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev != p2p->go_neg_peer) { 10648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Not ready for GO negotiation with " MACSTR, 10668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 10678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 10688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->pending_action_state == P2P_PENDING_GO_NEG_RESPONSE) { 10718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Stopped waiting " 10728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "for TX status on GO Negotiation Response since we " 10738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "already received Confirmation"); 10748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_NO_PENDING_ACTION; 10758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_parse(data, len, &msg)) 10788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 10798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 10818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Was not expecting GO Negotiation Confirm - " 10838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "ignore"); 10848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 10858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 10878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.dialog_token != dev->dialog_token) { 10898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unexpected Dialog Token %u (expected %u)", 10918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dialog_token, dev->dialog_token); 10928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 10938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 10948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.status) { 10978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Status attribute received"); 10998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 11008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*msg.status) { 11038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 11048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: GO Negotiation rejected: status %d", 11058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *msg.status); 11068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 11078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->go_state == REMOTE_GO && msg.group_id) { 11118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Store SSID for Provisioning step */ 11128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = msg.group_id_len - ETH_ALEN; 11138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(p2p->ssid, msg.group_id + ETH_ALEN, p2p->ssid_len); 11148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (dev->go_state == REMOTE_GO) { 11158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 11168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory P2P Group ID attribute missing from " 11178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "GO Negotiation Confirmation"); 11188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = 0; 11198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 11208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 11218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 11238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.operating_channel) { 11268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 11278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory Operating Channel attribute missing " 11288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "from GO Negotiation Confirmation"); 11298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 11308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 11318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 11338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.channel_list) { 11368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 11378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory Operating Channel attribute missing " 11388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "from GO Negotiation Confirmation"); 11398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 11408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 11418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 11438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 11468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->go_state == UNKNOWN_GO) { 11488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 11498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * This should not happen since GO negotiation has already 11508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * been completed. 11518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 11528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 11538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unexpected GO Neg state - do not know which end " 11548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "becomes GO"); 11558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_go_complete(p2p, dev); 11598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1160