p2p_go_neg.c revision 8c65289885e84727226d81b3d32856f79c31ee5f
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; 13761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt size_t extra = 0; 1388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 14061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 14161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt extra = wpabuf_len(p2p->wfd_ie_go_neg); 14261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 14361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 14461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt buf = wpabuf_alloc(1000 + extra); 1458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (buf == NULL) 1468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_public_action_hdr(buf, P2P_GO_NEG_REQ, peer->dialog_token); 1498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = p2p_buf_add_ie_hdr(buf); 1518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab = 0; 1521f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 1538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP; 1541f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 1551f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_RECONN; 1561f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 1578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cross_connect) 1588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 1598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cfg->p2p_intra_bss) 1608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; 16104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p_buf_add_capability(buf, p2p->dev_capab & 16204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 16304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt group_capab); 1649cdf1b905fae57dea42506a1af67f6ece544b261Dmitry Shmidt p2p_buf_add_go_intent(buf, (p2p->go_intent << 1) | peer->tie_breaker); 16561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt p2p_buf_add_config_timeout(buf, p2p->go_timeout, p2p->client_timeout); 1668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_listen_channel(buf, p2p->cfg->country, p2p->cfg->reg_class, 1678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->channel); 1688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->ext_listen_interval) 1698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period, 1708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ext_listen_interval); 1718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_intended_addr(buf, p2p->intended_addr); 172069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_buf_add_channel_list(buf, p2p->cfg->country, &p2p->channels); 1738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_device_info(buf, p2p, peer); 1748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, p2p->cfg->country, 1758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 1768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_update_ie_hdr(buf, len); 1778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* WPS IE with Device Password ID attribute */ 1798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_build_wps_ie(p2p, buf, p2p_wps_method_pw_id(peer->wps_method), 0); 1808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 18161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 18261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 18361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpabuf_put_buf(buf, p2p->wfd_ie_go_neg); 18461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 18561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 1868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return buf; 1878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev) 1918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *req; 1938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 1948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (dev->flags & P2P_DEV_PD_BEFORE_GO_NEG) { 19604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt u16 config_method; 19704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 19804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt "P2P: Use PD-before-GO-Neg workaround for " MACSTR, 19904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt MAC2STR(dev->info.p2p_device_addr)); 20004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (dev->wps_method == WPS_PIN_DISPLAY) 20104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt config_method = WPS_CONFIG_KEYPAD; 20204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt else if (dev->wps_method == WPS_PIN_KEYPAD) 20304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt config_method = WPS_CONFIG_DISPLAY; 20404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt else if (dev->wps_method == WPS_PBC) 20504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt config_method = WPS_CONFIG_PUSHBUTTON; 20604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt else 20704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt return -1; 20804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt return p2p_prov_disc_req(p2p, dev->info.p2p_device_addr, 209d5e4923d04122f81300fa68fb07d64ede28fd44dDmitry Shmidt config_method, 0, 0, 1); 21004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 21104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt 2128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = dev->listen_freq > 0 ? dev->listen_freq : dev->oper_freq; 2138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq <= 0) { 2148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Listen/Operating frequency known for the " 2168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "peer " MACSTR " to send GO Negotiation Request", 2178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(dev->info.p2p_device_addr)); 2188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt req = p2p_build_go_neg_req(p2p, dev); 2228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (req == NULL) 2238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Sending GO Negotiation Request"); 2268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_CONNECT); 2278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_PENDING_GO_NEG_REQUEST; 2288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->go_neg_peer = dev; 2298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags |= P2P_DEV_WAIT_GO_NEG_RESPONSE; 2308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->connect_reqs++; 2318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_send_action(p2p, freq, dev->info.p2p_device_addr, 2328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->dev_addr, dev->info.p2p_device_addr, 2338c65289885e84727226d81b3d32856f79c31ee5fDmitry Shmidt wpabuf_head(req), wpabuf_len(req), 500) < 0) { 2348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Failed to send Action frame"); 2368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Use P2P find to recover and retry */ 2378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_timeout(p2p, 0, 0); 23804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } else 23904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt dev->go_neg_req_sent++; 2408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(req); 2428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * p2p_build_go_neg_resp(struct p2p_data *p2p, 2488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *peer, 2498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dialog_token, u8 status, 2508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 tie_breaker) 2518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *buf; 2538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *len; 2548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 group_capab; 25561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt size_t extra = 0; 2568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Building GO Negotiation Response"); 25961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 26061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 26161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 26261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt extra = wpabuf_len(p2p->wfd_ie_go_neg); 26361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 26461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 26561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt buf = wpabuf_alloc(1000 + extra); 2668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (buf == NULL) 2678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 2688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_public_action_hdr(buf, P2P_GO_NEG_RESP, dialog_token); 2708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = p2p_buf_add_ie_hdr(buf); 2728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_status(buf, status); 2738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab = 0; 2748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer && peer->go_state == LOCAL_GO) { 2751f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 2768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP; 2771f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 2781f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt group_capab |= 2791f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt P2P_GROUP_CAPAB_PERSISTENT_RECONN; 2801f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 2818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cross_connect) 2828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 2838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cfg->p2p_intra_bss) 2848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; 2858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 28604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p_buf_add_capability(buf, p2p->dev_capab & 28704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 28804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt group_capab); 2898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_go_intent(buf, (p2p->go_intent << 1) | tie_breaker); 29061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt p2p_buf_add_config_timeout(buf, p2p->go_timeout, p2p->client_timeout); 2918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer && peer->go_state == REMOTE_GO) { 292069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Omit Operating " 293069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff "Channel attribute"); 2948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 2958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, p2p->cfg->country, 2968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class, 2978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel); 2988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_intended_addr(buf, p2p->intended_addr); 300069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff if (status || peer == NULL) { 301069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_buf_add_channel_list(buf, p2p->cfg->country, 302069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff &p2p->channels); 303069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff } else if (peer->go_state == REMOTE_GO) { 304069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_buf_add_channel_list(buf, p2p->cfg->country, 305069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff &p2p->channels); 3068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 307069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff struct p2p_channels res; 308069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_channels_intersect(&p2p->channels, &peer->channels, 309069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff &res); 310069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_buf_add_channel_list(buf, p2p->cfg->country, &res); 3118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_device_info(buf, p2p, peer); 3138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer && peer->go_state == LOCAL_GO) { 3148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_group_id(buf, p2p->cfg->dev_addr, p2p->ssid, 3158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len); 3168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_update_ie_hdr(buf, len); 3188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* WPS IE with Device Password ID attribute */ 3208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_build_wps_ie(p2p, buf, 3218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_pw_id(peer ? peer->wps_method : 3228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_NOT_READY), 0); 3238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 32461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 32561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 32661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpabuf_put_buf(buf, p2p->wfd_ie_go_neg); 32761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 32861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 32961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 3308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return buf; 3318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 334a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt/** 335a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * p2p_reselect_channel - Re-select operating channel based on peer information 336a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * @p2p: P2P module context from p2p_init() 337a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * @intersection: Support channel list intersection from local and peer 338a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * 339a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * This function is used to re-select the best channel after having received 340a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * information from the peer to allow supported channel lists to be intersected. 341a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * This can be used to improve initial channel selection done in 342a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * p2p_prepare_channel() prior to the start of GO Negotiation. In addition, this 343a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * can be used for Invitation case. 344a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt */ 34591c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidtvoid p2p_reselect_channel(struct p2p_data *p2p, 34691c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt struct p2p_channels *intersection) 3478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_reg_class *cl; 3498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 3508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 op_reg_class, op_channel; 35104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt unsigned int i; 3528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Selected operating " 3548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "channel (reg_class %u channel %u) not acceptable to the " 3558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "peer", p2p->op_reg_class, p2p->op_channel); 3568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* First, try to pick the best channel from another band */ 3588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = p2p_channel_to_freq(p2p->cfg->country, p2p->op_reg_class, 3598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel); 3608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq >= 2400 && freq < 2500 && p2p->best_freq_5 > 0 && 3618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_5, 3628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &op_reg_class, &op_channel) == 0 && 3638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_includes(intersection, op_reg_class, op_channel)) { 3648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Pick best 5 GHz " 3658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "channel (reg_class %u channel %u) from intersection", 3668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt op_reg_class, op_channel); 3678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class = op_reg_class; 3688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel = op_channel; 3698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 3708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq >= 4900 && freq < 6000 && p2p->best_freq_24 > 0 && 3738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_24, 3748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &op_reg_class, &op_channel) == 0 && 3758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_includes(intersection, op_reg_class, op_channel)) { 3768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Pick best 2.4 GHz " 3778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "channel (reg_class %u channel %u) from intersection", 3788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt op_reg_class, op_channel); 3798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class = op_reg_class; 3808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel = op_channel; 3818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 3828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 38404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt /* Select channel with highest preference if the peer supports it */ 38504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt for (i = 0; p2p->cfg->pref_chan && i < p2p->cfg->num_pref_chan; i++) { 38604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (p2p_channels_includes(intersection, 38704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->cfg->pref_chan[i].op_class, 38804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->cfg->pref_chan[i].chan)) { 38904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->op_reg_class = p2p->cfg->pref_chan[i].op_class; 39004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->op_channel = p2p->cfg->pref_chan[i].chan; 39104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Pick " 39204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt "highest preferred chnnel (op_class %u " 39304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt "channel %u) from intersection", 39404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->op_reg_class, p2p->op_channel); 39504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt return; 39604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 39704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 39804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt 399a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt /* Try a channel where we might be able to use HT40 */ 400a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt for (i = 0; i < intersection->reg_classes; i++) { 401a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt struct p2p_reg_class *c = &intersection->reg_class[i]; 402a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (c->reg_class == 116 || c->reg_class == 117 || 403a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt c->reg_class == 126 || c->reg_class == 127) { 404a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 405a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt "P2P: Pick possible HT40 channel (reg_class " 406a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt "%u channel %u) from intersection", 407a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt c->reg_class, c->channel[0]); 408a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->op_reg_class = c->reg_class; 409a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->op_channel = c->channel[0]; 410a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt return; 411a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 412a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 413a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 414a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt /* 415a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * Try to see if the original channel is in the intersection. If 416a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * so, no need to change anything, as it already contains some 417a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * randomness. 418a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt */ 419a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (p2p_channels_includes(intersection, p2p->op_reg_class, 420a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->op_channel)) { 421a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 422a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt "P2P: Using original operating class and channel " 423a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt "(op_class %u channel %u) from intersection", 424a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 425a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt return; 426a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 427a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 4288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 4298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Fall back to whatever is included in the channel intersection since 4308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * no better options seems to be available. 4318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 4328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cl = &intersection->reg_class[0]; 4338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Pick another channel " 4348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(reg_class %u channel %u) from intersection", 4358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cl->reg_class, cl->channel[0]); 4368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class = cl->reg_class; 4378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel = cl->channel[0]; 4388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 441a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidtstatic int p2p_go_select_channel(struct p2p_data *p2p, struct p2p_device *dev, 442a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt u8 *status) 443a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt{ 444a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt struct p2p_channels intersection; 445a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt size_t i; 446a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 447a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p_channels_intersect(&p2p->channels, &dev->channels, &intersection); 448a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (intersection.reg_classes == 0 || 449a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt intersection.reg_class[0].channels == 0) { 450a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt *status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 451a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 452a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt "P2P: No common channels found"); 453a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt return -1; 454a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 455a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 456a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt for (i = 0; i < intersection.reg_classes; i++) { 457a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt struct p2p_reg_class *c; 458a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt c = &intersection.reg_class[i]; 459a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt wpa_printf(MSG_DEBUG, "P2P: reg_class %u", c->reg_class); 460a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "P2P: channels", 461a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt c->channel, c->channels); 462a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 463a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 464a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (!p2p_channels_includes(&intersection, p2p->op_reg_class, 465a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->op_channel)) { 466a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (dev->flags & P2P_DEV_FORCE_FREQ) { 467a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt *status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 468a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer does " 469a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt "not support the forced channel"); 470a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt return -1; 471a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 472a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 473a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Selected operating " 474a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt "channel (op_class %u channel %u) not acceptable to " 475a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt "the peer", p2p->op_reg_class, p2p->op_channel); 476a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p_reselect_channel(p2p, &intersection); 477a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } else if (!(dev->flags & P2P_DEV_FORCE_FREQ) && 478a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt !p2p->cfg->cfg_op_channel) { 479a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Try to optimize " 480a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt "channel selection with peer information received; " 481a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt "previously selected op_class %u channel %u", 482a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 483a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p_reselect_channel(p2p, &intersection); 484a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 485a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 486a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (!p2p->ssid_set) { 487a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p_build_ssid(p2p, p2p->ssid, &p2p->ssid_len); 488a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->ssid_set = 1; 489a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 490a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 491a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt return 0; 492a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt} 493a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 494a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 4958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa, 4968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t len, int rx_freq) 4978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev = NULL; 4998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *resp; 5008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_message msg; 5018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 status = P2P_SC_FAIL_INVALID_PARAMS; 5028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int tie_breaker = 0; 5038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 5048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Received GO Negotiation Request from " MACSTR 5078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(freq=%d)", MAC2STR(sa), rx_freq); 5088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_parse(data, len, &msg)) 5108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 5118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.capability) { 5138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory Capability attribute missing from GO " 5158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Negotiation Request"); 5168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 5178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 5198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.go_intent) 5228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tie_breaker = *msg.go_intent & 0x01; 5238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else { 5248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory GO Intent attribute missing from GO " 5268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Negotiation Request"); 5278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 5288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 5308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.config_timeout) { 5338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory Configuration Timeout attribute " 5358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "missing from GO Negotiation Request"); 5368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 5378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 5398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.listen_channel) { 5428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Listen Channel attribute received"); 5448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.operating_channel) { 5478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Operating Channel attribute received"); 5498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.channel_list) { 5528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Channel List attribute received"); 5548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.intended_addr) { 5578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Intended P2P Interface Address attribute " 5598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "received"); 5608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.p2p_device_info) { 5638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No P2P Device Info attribute received"); 5658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(msg.p2p_device_addr, sa, ETH_ALEN) != 0) { 5698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unexpected GO Negotiation Request SA=" MACSTR 5718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " != dev_addr=" MACSTR, 5728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa), MAC2STR(msg.p2p_device_addr)); 5738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_get_device(p2p, sa); 5778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.status && *msg.status) { 5798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unexpected Status attribute (%d) in GO " 5818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Negotiation Request", *msg.status); 5828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev == NULL) 5868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_add_dev_from_go_neg_req(p2p, sa, &msg); 5878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) 5888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_add_dev_info(p2p, sa, dev, &msg); 5898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev && dev->flags & P2P_DEV_USER_REJECTED) { 5908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: User has rejected this peer"); 5928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_REJECTED_BY_USER; 5938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (dev == NULL || dev->wps_method == WPS_NOT_READY) { 5948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Not ready for GO negotiation with " MACSTR, 5968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 5978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 5988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev) 5998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE; 6008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->go_neg_req_rx(p2p->cfg->cb_ctx, sa, 6018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dev_password_id); 6028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (p2p->go_neg_peer && p2p->go_neg_peer != dev) { 6038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Already in Group Formation with another peer"); 6058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 6068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 6078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int go; 6088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!p2p->go_neg_peer) { 6108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting " 6118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "GO Negotiation with previously authorized " 6128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "peer"); 6138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(dev->flags & P2P_DEV_FORCE_FREQ)) { 6148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Use default channel settings"); 6168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class = p2p->cfg->op_reg_class; 6178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel = p2p->cfg->op_channel; 6188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(&p2p->channels, &p2p->cfg->channels, 6198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(struct p2p_channels)); 6208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 6218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Use previously configured " 6238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "forced channel settings"); 6248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags &= ~P2P_DEV_NOT_YET_READY; 6288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.go_intent) { 6308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No GO Intent attribute received"); 6328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((*msg.go_intent >> 1) > P2P_MAX_GO_INTENT) { 6358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Invalid GO Intent value (%u) received", 6378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *msg.go_intent >> 1); 6388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->go_neg_req_sent && 6428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(sa, p2p->cfg->dev_addr, ETH_ALEN) > 0) { 6438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Do not reply since peer has higher " 6458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "address and GO Neg Request already sent"); 6468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 6478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 6488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt go = p2p_go_det(p2p->go_intent, *msg.go_intent); 6518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go < 0) { 6528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Incompatible GO Intent"); 6548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_BOTH_GO_INTENT_15; 6558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_peer_channels(p2p, dev, msg.channel_list, 6598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.channel_list_len) < 0) { 6608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No common channels found"); 6628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 6638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (msg.dev_password_id) { 6678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_REGISTRAR_SPECIFIED: 6688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: PIN from peer Display"); 6708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PIN_KEYPAD) { 6718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: We have wps_method=%s -> " 6738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "incompatible", 6748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 6758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 6768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 6798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_USER_SPECIFIED: 6808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Peer entered PIN on Keypad"); 6821f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (dev->wps_method != WPS_PIN_DISPLAY) { 6838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: We have wps_method=%s -> " 6858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "incompatible", 6868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 6878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 6888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 6918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_PUSHBUTTON: 6928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Peer using pushbutton"); 6948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PBC) { 6958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: We have wps_method=%s -> " 6978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "incompatible", 6988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 6998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 7008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 7018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 7038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 7048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 7058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unsupported Device Password ID %d", 7068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dev_password_id); 7078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 7088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 7098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 711a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (go && p2p_go_select_channel(p2p, dev, &status) < 0) 712a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt goto fail; 7138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_state = go ? LOCAL_GO : REMOTE_GO; 7158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->oper_freq = p2p_channel_to_freq((const char *) 7168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel, 7178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel[3], 7188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel[4]); 7198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer operating " 7208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "channel preference: %d MHz", dev->oper_freq); 7218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.config_timeout) { 7238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_timeout = msg.config_timeout[0]; 7248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->client_timeout = msg.config_timeout[1]; 7258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 7288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: GO Negotiation with " MACSTR, MAC2STR(sa)); 7298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->state != P2P_IDLE) 7308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_stop_find_for_freq(p2p, rx_freq); 7318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_GO_NEG); 7328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_clear_timeout(p2p); 7338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->dialog_token = msg.dialog_token; 7348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(dev->intended_addr, msg.intended_addr, ETH_ALEN); 7358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->go_neg_peer = dev; 7368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_SUCCESS; 7378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtfail: 7408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev) 7418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->status = status; 7428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp = p2p_build_go_neg_resp(p2p, dev, msg.dialog_token, status, 7438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !tie_breaker); 7448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 7458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (resp == NULL) 7468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 7478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 7488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Sending GO Negotiation Response"); 7498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rx_freq > 0) 7508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = rx_freq; 7518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 7528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = p2p_channel_to_freq(p2p->cfg->country, 7538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->reg_class, 7548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->channel); 7558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq < 0) { 7568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 7578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unknown regulatory class/channel"); 7588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(resp); 7598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 7608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (status == P2P_SC_SUCCESS) { 7628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_PENDING_GO_NEG_RESPONSE; 7638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags |= P2P_DEV_WAIT_GO_NEG_CONFIRM; 76404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (os_memcmp(sa, p2p->cfg->dev_addr, ETH_ALEN) < 0) { 76504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt /* 76604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * Peer has smaller address, so the GO Negotiation 76704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * Response from us is expected to complete 76804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * negotiation. Ignore a GO Negotiation Response from 76904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * the peer if it happens to be received after this 77004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * point due to a race condition in GO Negotiation 77104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * Request transmission and processing. 77204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt */ 77304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 77404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 7758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 7768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = 7778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt P2P_PENDING_GO_NEG_RESPONSE_FAILURE; 7788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_send_action(p2p, freq, sa, p2p->cfg->dev_addr, 7798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->dev_addr, 7808c65289885e84727226d81b3d32856f79c31ee5fDmitry Shmidt wpabuf_head(resp), wpabuf_len(resp), 500) < 0) { 7818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 7828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Failed to send Action frame"); 7838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(resp); 7868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * p2p_build_go_neg_conf(struct p2p_data *p2p, 7908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *peer, 7918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dialog_token, u8 status, 7928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *resp_chan, int go) 7938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *buf; 7958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *len; 7968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_channels res; 7978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 group_capab; 79861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt size_t extra = 0; 7998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Building GO Negotiation Confirm"); 80261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 80361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 80461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 80561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt extra = wpabuf_len(p2p->wfd_ie_go_neg); 80661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 80761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 80861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt buf = wpabuf_alloc(1000 + extra); 8098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (buf == NULL) 8108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 8118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_public_action_hdr(buf, P2P_GO_NEG_CONF, dialog_token); 8138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = p2p_buf_add_ie_hdr(buf); 8158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_status(buf, status); 8168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab = 0; 8178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer->go_state == LOCAL_GO) { 8181f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 8198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP; 8201f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 8211f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt group_capab |= 8221f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt P2P_GROUP_CAPAB_PERSISTENT_RECONN; 8231f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 8248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cross_connect) 8258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 8268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cfg->p2p_intra_bss) 8278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; 8288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 82904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p_buf_add_capability(buf, p2p->dev_capab & 83004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 83104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt group_capab); 8328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go || resp_chan == NULL) 8338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, p2p->cfg->country, 8348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class, 8358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel); 8368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 8378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, (const char *) resp_chan, 8388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp_chan[3], resp_chan[4]); 8398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_intersect(&p2p->channels, &peer->channels, &res); 8408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_channel_list(buf, p2p->cfg->country, &res); 8418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go) { 8428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_group_id(buf, p2p->cfg->dev_addr, p2p->ssid, 8438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len); 8448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_update_ie_hdr(buf, len); 8468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 84761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 84861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 84961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpabuf_put_buf(buf, p2p->wfd_ie_go_neg); 85061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 85161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 8528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return buf; 8538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 8548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa, 8578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t len, int rx_freq) 8588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 8598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev; 8608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *conf; 8618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int go = -1; 8628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_message msg; 8638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 status = P2P_SC_SUCCESS; 8648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 8658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Received GO Negotiation Response from " MACSTR 8688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " (freq=%d)", MAC2STR(sa), rx_freq); 8698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_get_device(p2p, sa); 8708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev == NULL || dev->wps_method == WPS_NOT_READY || 8718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev != p2p->go_neg_peer) { 8728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Not ready for GO negotiation with " MACSTR, 8748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 8758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 8768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_parse(data, len, &msg)) 8798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 8808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE)) { 8828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Was not expecting GO Negotiation Response - " 8848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "ignore"); 8858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 8868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 8878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 8898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.dialog_token != dev->dialog_token) { 8918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unexpected Dialog Token %u (expected %u)", 8938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dialog_token, dev->dialog_token); 8948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 8958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 8968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.status) { 8998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Status attribute received"); 9018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*msg.status) { 9058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: GO Negotiation rejected: status %d", 9078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *msg.status); 9088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_neg_req_sent = 0; 9098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*msg.status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 9108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Wait for the peer to become ready for " 9128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "GO Negotiation"); 9138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags |= P2P_DEV_NOT_YET_READY; 9148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->wait_count = 0; 9158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_WAIT_PEER_IDLE); 9168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_timeout(p2p, 0, 0); 9178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 9188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Stop GO Negotiation attempt"); 9208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_go_neg_failed(p2p, dev, *msg.status); 9218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 9238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 9248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 9258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.capability) { 9288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory Capability attribute missing from GO " 9308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Negotiation Response"); 9318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 9328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 9358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.p2p_device_info) { 9388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory P2P Device Info attribute missing " 9408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "from GO Negotiation Response"); 9418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 9428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 9458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.intended_addr) { 9488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Intended P2P Interface Address attribute " 9508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "received"); 9518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.go_intent) { 9568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No GO Intent attribute received"); 9588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((*msg.go_intent >> 1) > P2P_MAX_GO_INTENT) { 9628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Invalid GO Intent value (%u) received", 9648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *msg.go_intent >> 1); 9658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt go = p2p_go_det(p2p->go_intent, *msg.go_intent); 9708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go < 0) { 9718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Incompatible GO Intent"); 9738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 9748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!go && msg.group_id) { 9788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Store SSID for Provisioning step */ 9798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = msg.group_id_len - ETH_ALEN; 9808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(p2p->ssid, msg.group_id + ETH_ALEN, p2p->ssid_len); 9818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (!go) { 9828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory P2P Group ID attribute missing from " 9848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "GO Negotiation Response"); 9858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = 0; 9868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.config_timeout) { 9918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory Configuration Timeout attribute " 9938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "missing from GO Negotiation Response"); 9948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 9958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 9988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 9998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_timeout = msg.config_timeout[0]; 10008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->client_timeout = msg.config_timeout[1]; 10018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.operating_channel && !go) { 10048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 10058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Note: P2P Client may omit Operating Channel attribute to 10068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * indicate it does not have a preference. 10078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 10088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Operating Channel attribute received"); 10108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 10118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.channel_list) { 10148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Channel List attribute received"); 10168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 10178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_peer_channels(p2p, dev, msg.channel_list, 10218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.channel_list_len) < 0) { 10228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No common channels found"); 10248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 10258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.operating_channel) { 10298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->oper_freq = p2p_channel_to_freq((const char *) 10308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel, 10318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel[3], 10328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel[4]); 10338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer operating " 10348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "channel preference: %d MHz", dev->oper_freq); 10358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 10368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->oper_freq = 0; 10378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (msg.dev_password_id) { 10398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_REGISTRAR_SPECIFIED: 10408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: PIN from peer Display"); 10428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PIN_KEYPAD) { 10438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: We have wps_method=%s -> " 10458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "incompatible", 10468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 10478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 10488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 10518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_USER_SPECIFIED: 10528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Peer entered PIN on Keypad"); 10541f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (dev->wps_method != WPS_PIN_DISPLAY) { 10558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: We have wps_method=%s -> " 10578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "incompatible", 10588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 10598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 10608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 10638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_PUSHBUTTON: 10648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Peer using pushbutton"); 10668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PBC) { 10678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: We have wps_method=%s -> " 10698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "incompatible", 10708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 10718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 10728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 10758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 10768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unsupported Device Password ID %d", 10788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dev_password_id); 10798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 10808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1083a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (go && p2p_go_select_channel(p2p, dev, &status) < 0) 1084a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt goto fail; 10858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_GO_NEG); 10878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_clear_timeout(p2p); 10888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: GO Negotiation with " MACSTR, MAC2STR(sa)); 10918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(dev->intended_addr, msg.intended_addr, ETH_ALEN); 10928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtfail: 10948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt conf = p2p_build_go_neg_conf(p2p, dev, msg.dialog_token, status, 10958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel, go); 10968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 10978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (conf == NULL) 10988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 10998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 11008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Sending GO Negotiation Confirm"); 11018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (status == P2P_SC_SUCCESS) { 11028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM; 11038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_state = go ? LOCAL_GO : REMOTE_GO; 11048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 11058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_NO_PENDING_ACTION; 11068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rx_freq > 0) 11078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = rx_freq; 11088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 11098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = dev->listen_freq; 11108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_send_action(p2p, freq, sa, p2p->cfg->dev_addr, sa, 111104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt wpabuf_head(conf), wpabuf_len(conf), 0) < 0) { 11128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 11138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Failed to send Action frame"); 11148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_go_neg_failed(p2p, dev, -1); 11158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(conf); 11179cdf1b905fae57dea42506a1af67f6ece544b261Dmitry Shmidt if (status != P2P_SC_SUCCESS) { 11189cdf1b905fae57dea42506a1af67f6ece544b261Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 11199cdf1b905fae57dea42506a1af67f6ece544b261Dmitry Shmidt "P2P: GO Negotiation failed"); 11209cdf1b905fae57dea42506a1af67f6ece544b261Dmitry Shmidt p2p_go_neg_failed(p2p, dev, status); 11219cdf1b905fae57dea42506a1af67f6ece544b261Dmitry Shmidt } 11228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 11238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa, 11268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t len) 11278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 11288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev; 11298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_message msg; 11308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 11328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Received GO Negotiation Confirm from " MACSTR, 11338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 11348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_get_device(p2p, sa); 11358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev == NULL || dev->wps_method == WPS_NOT_READY || 11368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev != p2p->go_neg_peer) { 11378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 11388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Not ready for GO negotiation with " MACSTR, 11398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 11408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->pending_action_state == P2P_PENDING_GO_NEG_RESPONSE) { 11448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Stopped waiting " 11458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "for TX status on GO Negotiation Response since we " 11468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "already received Confirmation"); 11478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_NO_PENDING_ACTION; 11488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_parse(data, len, &msg)) 11518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 11548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 11558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Was not expecting GO Negotiation Confirm - " 11568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "ignore"); 11578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 11608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.dialog_token != dev->dialog_token) { 11628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 11638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unexpected Dialog Token %u (expected %u)", 11648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dialog_token, dev->dialog_token); 11658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 11668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.status) { 11708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 11718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Status attribute received"); 11728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 11738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*msg.status) { 11768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 11778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: GO Negotiation rejected: status %d", 11788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *msg.status); 11799cdf1b905fae57dea42506a1af67f6ece544b261Dmitry Shmidt p2p_go_neg_failed(p2p, dev, *msg.status); 11808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 11818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->go_state == REMOTE_GO && msg.group_id) { 11858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Store SSID for Provisioning step */ 11868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = msg.group_id_len - ETH_ALEN; 11878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(p2p->ssid, msg.group_id + ETH_ALEN, p2p->ssid_len); 11888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (dev->go_state == REMOTE_GO) { 11898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 11908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory P2P Group ID attribute missing from " 11918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "GO Negotiation Confirmation"); 11928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = 0; 11939cdf1b905fae57dea42506a1af67f6ece544b261Dmitry Shmidt p2p_go_neg_failed(p2p, dev, P2P_SC_FAIL_INVALID_PARAMS); 11948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 11958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.operating_channel) { 11998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 12008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory Operating Channel attribute missing " 12018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "from GO Negotiation Confirmation"); 12028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 12038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 12048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 12058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 12068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1208f06196652a3e12af00503f4a548c56d4e60f7246Irfan Sheriff#ifdef ANDROID_P2P 1209af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff if (msg.operating_channel) { 1210af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff dev->oper_freq = p2p_channel_to_freq((const char *) 1211af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff msg.operating_channel, 1212af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff msg.operating_channel[3], 1213af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff msg.operating_channel[4]); 1214af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer operating " 1215af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff "channel preference: %d MHz", dev->oper_freq); 1216af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff } else 1217af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff dev->oper_freq = 0; 1218f06196652a3e12af00503f4a548c56d4e60f7246Irfan Sheriff#endif 1219af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff 12208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.channel_list) { 12218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 12228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory Operating Channel attribute missing " 12238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "from GO Negotiation Confirmation"); 12248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 12258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 12268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 12278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 12288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 12318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->go_state == UNKNOWN_GO) { 12338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 12348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * This should not happen since GO negotiation has already 12358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * been completed. 12368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 12378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 12388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unexpected GO Neg state - do not know which end " 12398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "becomes GO"); 12408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 12418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12432c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen /* 12442c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * The peer could have missed our ctrl::ack frame for GO Negotiation 12452c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * Confirm and continue retransmitting the frame. To reduce the 12462c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * likelihood of the peer not getting successful TX status for the 12472c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * GO Negotiation Confirm frame, wait a short time here before starting 12482c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * the group so that we will remain on the current channel to 12492c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * acknowledge any possible retransmission from the peer. 12502c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen */ 12512c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: 20 ms wait on current " 12522c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen "channel before starting group"); 12532c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen os_sleep(0, 20000); 12542c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen 12558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_go_complete(p2p, dev); 12568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1257