p2p_go_neg.c revision 4ce9c87407c036fc83eb5a6044ddf976c86f53fc
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) { 52b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_info(p2p, "Mismatching country (ours=%c%c peer's=%c%c)", 538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->country[0], p2p->cfg->country[1], 548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos[0], pos[1]); 558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 3; 588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (pos + 2 < end) { 608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_reg_class *cl = &ch->reg_class[ch->reg_classes]; 618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cl->reg_class = *pos++; 628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos + 1 + pos[0] > end) { 63b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_info(p2p, "Invalid peer Channel List"); 648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt channels = *pos++; 678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cl->channels = channels > P2P_MAX_REG_CLASS_CHANNELS ? 688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt P2P_MAX_REG_CLASS_CHANNELS : channels; 698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(cl->channel, pos, cl->channels); 708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += channels; 718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ch->reg_classes++; 728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ch->reg_classes == P2P_MAX_REG_CLASSES) 738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_intersect(own, &dev->channels, &intersection); 77b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Own reg_classes %d peer reg_classes %d intersection reg_classes %d", 788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (int) own->reg_classes, 798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (int) dev->channels.reg_classes, 808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (int) intersection.reg_classes); 818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (intersection.reg_classes == 0) { 82b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_info(p2p, "No common channels found"); 838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int p2p_peer_channels(struct p2p_data *p2p, struct p2p_device *dev, 908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *channel_list, size_t channel_list_len) 918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return p2p_peer_channels_check(p2p, &p2p->channels, dev, 938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt channel_list, channel_list_len); 948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9704949598a23f501be6eec21697465fd46a28840aDmitry Shmidtu16 p2p_wps_method_pw_id(enum p2p_wps_method wps_method) 988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (wps_method) { 1008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PIN_DISPLAY: 1018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return DEV_PW_REGISTRAR_SPECIFIED; 1028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PIN_KEYPAD: 1038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return DEV_PW_USER_SPECIFIED; 1048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PBC: 1058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return DEV_PW_PUSHBUTTON; 1068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 1078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return DEV_PW_DEFAULT; 1088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic const char * p2p_wps_method_str(enum p2p_wps_method wps_method) 1138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (wps_method) { 1158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PIN_DISPLAY: 1168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "Display"; 1178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PIN_KEYPAD: 1188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "Keypad"; 1198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PBC: 1208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "PBC"; 1218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 1228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "??"; 1238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * p2p_build_go_neg_req(struct p2p_data *p2p, 1288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *peer) 1298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *buf; 1318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *len; 1328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 group_capab; 13361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt size_t extra = 0; 1348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 13661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 13761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt extra = wpabuf_len(p2p->wfd_ie_go_neg); 13861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 13961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 14061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt buf = wpabuf_alloc(1000 + extra); 1418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (buf == NULL) 1428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_public_action_hdr(buf, P2P_GO_NEG_REQ, peer->dialog_token); 1458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = p2p_buf_add_ie_hdr(buf); 1478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab = 0; 1481f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 1498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP; 1501f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 1511f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_RECONN; 1521f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 1538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cross_connect) 1548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 1558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cfg->p2p_intra_bss) 1568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; 15704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p_buf_add_capability(buf, p2p->dev_capab & 15804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 15904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt group_capab); 1609cdf1b905fae57dea42506a1af67f6ece544b261Dmitry Shmidt p2p_buf_add_go_intent(buf, (p2p->go_intent << 1) | peer->tie_breaker); 16161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt p2p_buf_add_config_timeout(buf, p2p->go_timeout, p2p->client_timeout); 1628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_listen_channel(buf, p2p->cfg->country, p2p->cfg->reg_class, 1638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->channel); 1648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->ext_listen_interval) 1658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period, 1668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ext_listen_interval); 1678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_intended_addr(buf, p2p->intended_addr); 168069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_buf_add_channel_list(buf, p2p->cfg->country, &p2p->channels); 1698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_device_info(buf, p2p, peer); 1708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, p2p->cfg->country, 1718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 1728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_update_ie_hdr(buf, len); 1738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* WPS IE with Device Password ID attribute */ 1758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_build_wps_ie(p2p, buf, p2p_wps_method_pw_id(peer->wps_method), 0); 1768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 17861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 17961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpabuf_put_buf(buf, p2p->wfd_ie_go_neg); 18061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 18161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 1828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return buf; 1838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev) 1878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *req; 1898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 1908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (dev->flags & P2P_DEV_PD_BEFORE_GO_NEG) { 19204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt u16 config_method; 193b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Use PD-before-GO-Neg workaround for " MACSTR, 19404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt MAC2STR(dev->info.p2p_device_addr)); 19504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (dev->wps_method == WPS_PIN_DISPLAY) 19604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt config_method = WPS_CONFIG_KEYPAD; 19704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt else if (dev->wps_method == WPS_PIN_KEYPAD) 19804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt config_method = WPS_CONFIG_DISPLAY; 19904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt else if (dev->wps_method == WPS_PBC) 20004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt config_method = WPS_CONFIG_PUSHBUTTON; 20104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt else 20204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt return -1; 20304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt return p2p_prov_disc_req(p2p, dev->info.p2p_device_addr, 204d5e4923d04122f81300fa68fb07d64ede28fd44dDmitry Shmidt config_method, 0, 0, 1); 20504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 20604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt 2078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = dev->listen_freq > 0 ? dev->listen_freq : dev->oper_freq; 2088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq <= 0) { 209b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Listen/Operating frequency known for the peer " 210b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt MACSTR " to send GO Negotiation Request", 2118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(dev->info.p2p_device_addr)); 2128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt req = p2p_build_go_neg_req(p2p, dev); 2168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (req == NULL) 2178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 218b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Sending GO Negotiation Request"); 2198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_CONNECT); 2208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_PENDING_GO_NEG_REQUEST; 2218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->go_neg_peer = dev; 2228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags |= P2P_DEV_WAIT_GO_NEG_RESPONSE; 2238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->connect_reqs++; 2248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_send_action(p2p, freq, dev->info.p2p_device_addr, 2258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->dev_addr, dev->info.p2p_device_addr, 2268c65289885e84727226d81b3d32856f79c31ee5fDmitry Shmidt wpabuf_head(req), wpabuf_len(req), 500) < 0) { 227b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Failed to send Action frame"); 2288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Use P2P find to recover and retry */ 2298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_timeout(p2p, 0, 0); 23004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } else 23104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt dev->go_neg_req_sent++; 2328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(req); 2348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * p2p_build_go_neg_resp(struct p2p_data *p2p, 2408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *peer, 2418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dialog_token, u8 status, 2428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 tie_breaker) 2438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *buf; 2458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *len; 2468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 group_capab; 24761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt size_t extra = 0; 2488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 249b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Building GO Negotiation Response"); 25061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 25161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 25261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 25361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt extra = wpabuf_len(p2p->wfd_ie_go_neg); 25461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 25561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 25661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt buf = wpabuf_alloc(1000 + extra); 2578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (buf == NULL) 2588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 2598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_public_action_hdr(buf, P2P_GO_NEG_RESP, dialog_token); 2618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = p2p_buf_add_ie_hdr(buf); 2638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_status(buf, status); 2648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab = 0; 2658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer && peer->go_state == LOCAL_GO) { 2661f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 2678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP; 2681f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 2691f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt group_capab |= 2701f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt P2P_GROUP_CAPAB_PERSISTENT_RECONN; 2711f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 2728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cross_connect) 2738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 2748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cfg->p2p_intra_bss) 2758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; 2768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 27704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p_buf_add_capability(buf, p2p->dev_capab & 27804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 27904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt group_capab); 2808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_go_intent(buf, (p2p->go_intent << 1) | tie_breaker); 28161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt p2p_buf_add_config_timeout(buf, p2p->go_timeout, p2p->client_timeout); 2828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer && peer->go_state == REMOTE_GO) { 283b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Omit Operating Channel attribute"); 2848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 2858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, p2p->cfg->country, 2868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class, 2878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel); 2888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_intended_addr(buf, p2p->intended_addr); 290069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff if (status || peer == NULL) { 291069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_buf_add_channel_list(buf, p2p->cfg->country, 292069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff &p2p->channels); 293069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff } else if (peer->go_state == REMOTE_GO) { 294069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_buf_add_channel_list(buf, p2p->cfg->country, 295069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff &p2p->channels); 2968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 297069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff struct p2p_channels res; 298069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_channels_intersect(&p2p->channels, &peer->channels, 299069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff &res); 300069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_buf_add_channel_list(buf, p2p->cfg->country, &res); 3018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_device_info(buf, p2p, peer); 3038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer && peer->go_state == LOCAL_GO) { 3048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_group_id(buf, p2p->cfg->dev_addr, p2p->ssid, 3058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len); 3068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_update_ie_hdr(buf, len); 3088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* WPS IE with Device Password ID attribute */ 3108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_build_wps_ie(p2p, buf, 3118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_pw_id(peer ? peer->wps_method : 3128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_NOT_READY), 0); 3138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 31461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 31561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 31661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpabuf_put_buf(buf, p2p->wfd_ie_go_neg); 31761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 31861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 31961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 3208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return buf; 3218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 324a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt/** 325a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * p2p_reselect_channel - Re-select operating channel based on peer information 326a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * @p2p: P2P module context from p2p_init() 327a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * @intersection: Support channel list intersection from local and peer 328a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * 329a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * This function is used to re-select the best channel after having received 330a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * information from the peer to allow supported channel lists to be intersected. 331a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * This can be used to improve initial channel selection done in 332a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * p2p_prepare_channel() prior to the start of GO Negotiation. In addition, this 333a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * can be used for Invitation case. 334a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt */ 33591c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidtvoid p2p_reselect_channel(struct p2p_data *p2p, 33691c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt struct p2p_channels *intersection) 3378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_reg_class *cl; 3398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 3408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 op_reg_class, op_channel; 34104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt unsigned int i; 3428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 343700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt if (p2p->own_freq_preference > 0 && 3444b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt p2p_freq_to_channel(p2p->own_freq_preference, 345700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt &op_reg_class, &op_channel) == 0 && 346700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p_channels_includes(intersection, op_reg_class, op_channel)) { 347b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Pick own channel preference (reg_class %u channel %u) from intersection", 348b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt op_reg_class, op_channel); 349700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p->op_reg_class = op_reg_class; 350700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p->op_channel = op_channel; 351700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt return; 352700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt } 353700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt 354700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt if (p2p->best_freq_overall > 0 && 3554b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt p2p_freq_to_channel(p2p->best_freq_overall, 356700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt &op_reg_class, &op_channel) == 0 && 357700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p_channels_includes(intersection, op_reg_class, op_channel)) { 358b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Pick best overall channel (reg_class %u channel %u) from intersection", 359700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt op_reg_class, op_channel); 360700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p->op_reg_class = op_reg_class; 361700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p->op_channel = op_channel; 362700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt return; 363700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt } 3648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* First, try to pick the best channel from another band */ 3664b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt freq = p2p_channel_to_freq(p2p->op_reg_class, p2p->op_channel); 3678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq >= 2400 && freq < 2500 && p2p->best_freq_5 > 0 && 368700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt !p2p_channels_includes(intersection, p2p->op_reg_class, 369700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p->op_channel) && 3704b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt p2p_freq_to_channel(p2p->best_freq_5, 3718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &op_reg_class, &op_channel) == 0 && 3728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_includes(intersection, op_reg_class, op_channel)) { 373b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Pick best 5 GHz channel (reg_class %u channel %u) from intersection", 3748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt op_reg_class, op_channel); 3758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class = op_reg_class; 3768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel = op_channel; 3778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 3788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq >= 4900 && freq < 6000 && p2p->best_freq_24 > 0 && 381700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt !p2p_channels_includes(intersection, p2p->op_reg_class, 382700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p->op_channel) && 3834b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt p2p_freq_to_channel(p2p->best_freq_24, 3848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &op_reg_class, &op_channel) == 0 && 3858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_includes(intersection, op_reg_class, op_channel)) { 386b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Pick best 2.4 GHz channel (reg_class %u channel %u) from intersection", 3878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt op_reg_class, op_channel); 3888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class = op_reg_class; 3898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel = op_channel; 3908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 3918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 39304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt /* Select channel with highest preference if the peer supports it */ 39404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt for (i = 0; p2p->cfg->pref_chan && i < p2p->cfg->num_pref_chan; i++) { 39504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (p2p_channels_includes(intersection, 39604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->cfg->pref_chan[i].op_class, 39704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->cfg->pref_chan[i].chan)) { 39804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->op_reg_class = p2p->cfg->pref_chan[i].op_class; 39904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->op_channel = p2p->cfg->pref_chan[i].chan; 400b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Pick highest preferred channel (op_class %u channel %u) from intersection", 40104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->op_reg_class, p2p->op_channel); 40204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt return; 40304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 40404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 40504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt 406a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt /* Try a channel where we might be able to use HT40 */ 407a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt for (i = 0; i < intersection->reg_classes; i++) { 408a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt struct p2p_reg_class *c = &intersection->reg_class[i]; 409a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (c->reg_class == 116 || c->reg_class == 117 || 410a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt c->reg_class == 126 || c->reg_class == 127) { 411b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Pick possible HT40 channel (reg_class %u channel %u) from intersection", 412a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt c->reg_class, c->channel[0]); 413a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->op_reg_class = c->reg_class; 414a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->op_channel = c->channel[0]; 415a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt return; 416a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 417a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 418a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 41903b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel /* Prefer a 5 GHz channel */ 42003b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel for (i = 0; i < intersection->reg_classes; i++) { 421edcc8d627804a0c1140542da2380c83a8c03b7a9Dmitry Shmidt#ifdef ANDROID_P2P 422edcc8d627804a0c1140542da2380c83a8c03b7a9Dmitry Shmidt struct p2p_reg_class prc; 423edcc8d627804a0c1140542da2380c83a8c03b7a9Dmitry Shmidt struct p2p_reg_class *c = &prc; 424edcc8d627804a0c1140542da2380c83a8c03b7a9Dmitry Shmidt p2p_copy_reg_class(c, &intersection->reg_class[i]); 425edcc8d627804a0c1140542da2380c83a8c03b7a9Dmitry Shmidt#else 42603b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel struct p2p_reg_class *c = &intersection->reg_class[i]; 427edcc8d627804a0c1140542da2380c83a8c03b7a9Dmitry Shmidt#endif 42803b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel if ((c->reg_class == 115 || c->reg_class == 124) && 42903b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel c->channels) { 43003b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel unsigned int r; 43103b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel 43203b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel /* 43303b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel * Pick one of the available channels in the operating 43403b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel * class at random. 43503b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel */ 43603b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel os_get_random((u8 *) &r, sizeof(r)); 43703b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel r %= c->channels; 43803b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel p2p_dbg(p2p, "Pick possible 5 GHz channel (op_class %u channel %u) from intersection", 43903b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel c->reg_class, c->channel[r]); 44003b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel p2p->op_reg_class = c->reg_class; 44103b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel p2p->op_channel = c->channel[r]; 44203b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel return; 44303b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel } 44403b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel } 44503b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel 446a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt /* 447a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * Try to see if the original channel is in the intersection. If 448a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * so, no need to change anything, as it already contains some 449a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * randomness. 450a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt */ 451a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (p2p_channels_includes(intersection, p2p->op_reg_class, 452a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->op_channel)) { 453b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Using original operating class and channel (op_class %u channel %u) from intersection", 454a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 455a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt return; 456a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 457a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 4588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 4598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Fall back to whatever is included in the channel intersection since 4608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * no better options seems to be available. 4618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 4628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cl = &intersection->reg_class[0]; 463b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Pick another channel (reg_class %u channel %u) from intersection", 4648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cl->reg_class, cl->channel[0]); 4658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class = cl->reg_class; 4668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel = cl->channel[0]; 4678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 470a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidtstatic int p2p_go_select_channel(struct p2p_data *p2p, struct p2p_device *dev, 471a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt u8 *status) 472a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt{ 473a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt struct p2p_channels intersection; 474a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 4754ce9c87407c036fc83eb5a6044ddf976c86f53fcDmitry Shmidt p2p_channels_dump(p2p, "own channels", &p2p->channels); 4764ce9c87407c036fc83eb5a6044ddf976c86f53fcDmitry Shmidt p2p_channels_dump(p2p, "peer channels", &dev->channels); 477a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p_channels_intersect(&p2p->channels, &dev->channels, &intersection); 4784ce9c87407c036fc83eb5a6044ddf976c86f53fcDmitry Shmidt p2p_channels_dump(p2p, "intersection", &intersection); 479a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (intersection.reg_classes == 0 || 480a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt intersection.reg_class[0].channels == 0) { 481a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt *status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 482b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No common channels found"); 483a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt return -1; 484a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 485a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 486a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (!p2p_channels_includes(&intersection, p2p->op_reg_class, 487a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->op_channel)) { 488a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (dev->flags & P2P_DEV_FORCE_FREQ) { 489a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt *status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 490b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Peer does not support the forced channel"); 491a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt return -1; 492a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 493a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 494b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Selected operating channel (op_class %u channel %u) not acceptable to the peer", 495b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 496a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p_reselect_channel(p2p, &intersection); 497a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } else if (!(dev->flags & P2P_DEV_FORCE_FREQ) && 498a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt !p2p->cfg->cfg_op_channel) { 499b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Try to optimize channel selection with peer information received; previously selected op_class %u channel %u", 500a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 501a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p_reselect_channel(p2p, &intersection); 502a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 503a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 504a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (!p2p->ssid_set) { 505a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p_build_ssid(p2p, p2p->ssid, &p2p->ssid_len); 506a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->ssid_set = 1; 507a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 508a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 509a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt return 0; 510a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt} 511a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 512a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 5138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa, 5148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t len, int rx_freq) 5158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev = NULL; 5178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *resp; 5188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_message msg; 5198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 status = P2P_SC_FAIL_INVALID_PARAMS; 5208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int tie_breaker = 0; 5218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 5228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 523b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Received GO Negotiation Request from " MACSTR "(freq=%d)", 524b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt MAC2STR(sa), rx_freq); 5258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_parse(data, len, &msg)) 5278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 5288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.capability) { 530b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory Capability attribute missing from GO Negotiation Request"); 5318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 5328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 5348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.go_intent) 5378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tie_breaker = *msg.go_intent & 0x01; 5388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else { 539b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory GO Intent attribute missing from GO Negotiation Request"); 5408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 5418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 5438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.config_timeout) { 546b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory Configuration Timeout attribute missing from GO Negotiation Request"); 5478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 5488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 5508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.listen_channel) { 553b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Listen Channel attribute received"); 5548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.operating_channel) { 557b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Operating Channel attribute received"); 5588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.channel_list) { 561b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Channel List attribute received"); 5628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.intended_addr) { 565b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Intended P2P Interface Address attribute received"); 5668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.p2p_device_info) { 569b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No P2P Device Info attribute received"); 5708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(msg.p2p_device_addr, sa, ETH_ALEN) != 0) { 574b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unexpected GO Negotiation Request SA=" MACSTR 5758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " != dev_addr=" MACSTR, 5768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa), MAC2STR(msg.p2p_device_addr)); 5778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_get_device(p2p, sa); 5818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.status && *msg.status) { 583b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unexpected Status attribute (%d) in GO Negotiation Request", 584b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt *msg.status); 5858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev == NULL) 5898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_add_dev_from_go_neg_req(p2p, sa, &msg); 5908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) 5918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_add_dev_info(p2p, sa, dev, &msg); 5928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev && dev->flags & P2P_DEV_USER_REJECTED) { 593b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "User has rejected this peer"); 5948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_REJECTED_BY_USER; 5958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (dev == NULL || dev->wps_method == WPS_NOT_READY) { 596b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Not ready for GO negotiation with " MACSTR, 5978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 5988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 5998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->go_neg_req_rx(p2p->cfg->cb_ctx, sa, 6008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dev_password_id); 6018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (p2p->go_neg_peer && p2p->go_neg_peer != dev) { 602b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Already in Group Formation with another peer"); 6038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 6048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 6058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int go; 6068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!p2p->go_neg_peer) { 608b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Starting GO Negotiation with previously authorized peer"); 6098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(dev->flags & P2P_DEV_FORCE_FREQ)) { 610b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Use default channel settings"); 6118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class = p2p->cfg->op_reg_class; 6128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel = p2p->cfg->op_channel; 6138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(&p2p->channels, &p2p->cfg->channels, 6148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(struct p2p_channels)); 6158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 616b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Use previously configured forced channel settings"); 6178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags &= ~P2P_DEV_NOT_YET_READY; 6218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.go_intent) { 623b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No GO Intent attribute received"); 6248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((*msg.go_intent >> 1) > P2P_MAX_GO_INTENT) { 627b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Invalid GO Intent value (%u) received", 6288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *msg.go_intent >> 1); 6298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->go_neg_req_sent && 6338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(sa, p2p->cfg->dev_addr, ETH_ALEN) > 0) { 634b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Do not reply since peer has higher address and GO Neg Request already sent"); 6358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 6368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 6378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt go = p2p_go_det(p2p->go_intent, *msg.go_intent); 6408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go < 0) { 641b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Incompatible GO Intent"); 6428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_BOTH_GO_INTENT_15; 6438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_peer_channels(p2p, dev, msg.channel_list, 6478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.channel_list_len) < 0) { 648b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No common channels found"); 6498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 6508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (msg.dev_password_id) { 6548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_REGISTRAR_SPECIFIED: 655b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "PIN from peer Display"); 6568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PIN_KEYPAD) { 657b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "We have wps_method=%s -> incompatible", 6588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 6598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 6608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 6638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_USER_SPECIFIED: 664b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Peer entered PIN on Keypad"); 6651f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (dev->wps_method != WPS_PIN_DISPLAY) { 666b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "We have wps_method=%s -> incompatible", 6678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 6688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 6698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 6728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_PUSHBUTTON: 673b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Peer using pushbutton"); 6748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PBC) { 675b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "We have wps_method=%s -> incompatible", 6768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 6778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 6788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 6818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 682b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unsupported Device Password ID %d", 6838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dev_password_id); 6848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 6858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 688a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (go && p2p_go_select_channel(p2p, dev, &status) < 0) 689a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt goto fail; 6908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_state = go ? LOCAL_GO : REMOTE_GO; 6924b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt dev->oper_freq = p2p_channel_to_freq(msg.operating_channel[3], 6938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel[4]); 694b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Peer operating channel preference: %d MHz", 695b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt dev->oper_freq); 6968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.config_timeout) { 6988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_timeout = msg.config_timeout[0]; 6998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->client_timeout = msg.config_timeout[1]; 7008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 702b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "GO Negotiation with " MACSTR, MAC2STR(sa)); 7038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->state != P2P_IDLE) 7048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_stop_find_for_freq(p2p, rx_freq); 7058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_GO_NEG); 7068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_clear_timeout(p2p); 7078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->dialog_token = msg.dialog_token; 7088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(dev->intended_addr, msg.intended_addr, ETH_ALEN); 7098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->go_neg_peer = dev; 7108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_SUCCESS; 7118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtfail: 7148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev) 7158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->status = status; 7168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp = p2p_build_go_neg_resp(p2p, dev, msg.dialog_token, status, 7178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !tie_breaker); 7188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 7198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (resp == NULL) 7208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 721b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Sending GO Negotiation Response"); 7228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rx_freq > 0) 7238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = rx_freq; 7248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 7254b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt freq = p2p_channel_to_freq(p2p->cfg->reg_class, 7268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->channel); 7278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq < 0) { 728b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unknown regulatory class/channel"); 7298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(resp); 7308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 7318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (status == P2P_SC_SUCCESS) { 7338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_PENDING_GO_NEG_RESPONSE; 7348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags |= P2P_DEV_WAIT_GO_NEG_CONFIRM; 73504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (os_memcmp(sa, p2p->cfg->dev_addr, ETH_ALEN) < 0) { 73604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt /* 73704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * Peer has smaller address, so the GO Negotiation 73804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * Response from us is expected to complete 73904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * negotiation. Ignore a GO Negotiation Response from 74004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * the peer if it happens to be received after this 74104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * point due to a race condition in GO Negotiation 74204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * Request transmission and processing. 74304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt */ 74404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 74504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 7468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 7478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = 7488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt P2P_PENDING_GO_NEG_RESPONSE_FAILURE; 7498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_send_action(p2p, freq, sa, p2p->cfg->dev_addr, 7508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->dev_addr, 7518c65289885e84727226d81b3d32856f79c31ee5fDmitry Shmidt wpabuf_head(resp), wpabuf_len(resp), 500) < 0) { 752b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Failed to send Action frame"); 7538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(resp); 7568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * p2p_build_go_neg_conf(struct p2p_data *p2p, 7608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *peer, 7618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dialog_token, u8 status, 7628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *resp_chan, int go) 7638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *buf; 7658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *len; 7668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_channels res; 7678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 group_capab; 76861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt size_t extra = 0; 7698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 770b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Building GO Negotiation Confirm"); 77161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 77261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 77361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 77461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt extra = wpabuf_len(p2p->wfd_ie_go_neg); 77561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 77661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 77761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt buf = wpabuf_alloc(1000 + extra); 7788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (buf == NULL) 7798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 7808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_public_action_hdr(buf, P2P_GO_NEG_CONF, dialog_token); 7828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = p2p_buf_add_ie_hdr(buf); 7848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_status(buf, status); 7858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab = 0; 7868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer->go_state == LOCAL_GO) { 7871f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 7888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP; 7891f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 7901f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt group_capab |= 7911f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt P2P_GROUP_CAPAB_PERSISTENT_RECONN; 7921f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 7938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cross_connect) 7948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 7958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cfg->p2p_intra_bss) 7968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; 7978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 79804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p_buf_add_capability(buf, p2p->dev_capab & 79904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 80004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt group_capab); 8018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go || resp_chan == NULL) 8028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, p2p->cfg->country, 8038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class, 8048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel); 8058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 8068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, (const char *) resp_chan, 8078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp_chan[3], resp_chan[4]); 8088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_intersect(&p2p->channels, &peer->channels, &res); 8098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_channel_list(buf, p2p->cfg->country, &res); 8108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go) { 8118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_group_id(buf, p2p->cfg->dev_addr, p2p->ssid, 8128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len); 8138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_update_ie_hdr(buf, len); 8158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 81661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 81761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 81861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpabuf_put_buf(buf, p2p->wfd_ie_go_neg); 81961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 82061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 8218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return buf; 8228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 8238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa, 8268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t len, int rx_freq) 8278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 8288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev; 8298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *conf; 8308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int go = -1; 8318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_message msg; 8328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 status = P2P_SC_SUCCESS; 8338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 8348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 835b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Received GO Negotiation Response from " MACSTR 8368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " (freq=%d)", MAC2STR(sa), rx_freq); 8378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_get_device(p2p, sa); 8388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev == NULL || dev->wps_method == WPS_NOT_READY || 8398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev != p2p->go_neg_peer) { 840b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Not ready for GO negotiation with " MACSTR, 8418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 8428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 8438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_parse(data, len, &msg)) 8468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 8478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE)) { 849b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Was not expecting GO Negotiation Response - ignore"); 8508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 8518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 8528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 8548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.dialog_token != dev->dialog_token) { 856b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unexpected Dialog Token %u (expected %u)", 8578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dialog_token, dev->dialog_token); 8588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 8598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 8608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.status) { 863b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Status attribute received"); 8648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 8658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 8668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*msg.status) { 868b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "GO Negotiation rejected: status %d", *msg.status); 8698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_neg_req_sent = 0; 8708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*msg.status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 871b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Wait for the peer to become ready for GO Negotiation"); 8728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags |= P2P_DEV_NOT_YET_READY; 8738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->wait_count = 0; 8748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_WAIT_PEER_IDLE); 8758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_timeout(p2p, 0, 0); 8768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 877b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Stop GO Negotiation attempt"); 8788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_go_neg_failed(p2p, dev, *msg.status); 8798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 8818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 8828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 8838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.capability) { 886b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory Capability attribute missing from GO Negotiation Response"); 8878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 8888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 8898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 8908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 8918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.p2p_device_info) { 894b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory P2P Device Info attribute missing from GO Negotiation Response"); 8958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 8968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 8978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 8988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 8998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.intended_addr) { 902b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Intended P2P Interface Address attribute received"); 9038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.go_intent) { 908b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No GO Intent attribute received"); 9098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((*msg.go_intent >> 1) > P2P_MAX_GO_INTENT) { 913b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Invalid GO Intent value (%u) received", 9148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *msg.go_intent >> 1); 9158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt go = p2p_go_det(p2p->go_intent, *msg.go_intent); 9208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go < 0) { 921b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Incompatible GO Intent"); 9228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 9238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!go && msg.group_id) { 9278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Store SSID for Provisioning step */ 9288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = msg.group_id_len - ETH_ALEN; 9298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(p2p->ssid, msg.group_id + ETH_ALEN, p2p->ssid_len); 9308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (!go) { 931b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory P2P Group ID attribute missing from GO Negotiation Response"); 9328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = 0; 9338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.config_timeout) { 938b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory Configuration Timeout attribute missing from GO Negotiation Response"); 9398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 9408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 9438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 9448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_timeout = msg.config_timeout[0]; 9458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->client_timeout = msg.config_timeout[1]; 9468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.operating_channel && !go) { 9498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 9508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Note: P2P Client may omit Operating Channel attribute to 9518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * indicate it does not have a preference. 9528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 953b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Operating Channel attribute received"); 9548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.channel_list) { 958b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Channel List attribute received"); 9598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_peer_channels(p2p, dev, msg.channel_list, 9648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.channel_list_len) < 0) { 965b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No common channels found"); 9668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 9678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.operating_channel) { 9714b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt dev->oper_freq = p2p_channel_to_freq(msg.operating_channel[3], 9728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel[4]); 973b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Peer operating channel preference: %d MHz", 974b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt dev->oper_freq); 9758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 9768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->oper_freq = 0; 9778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (msg.dev_password_id) { 9798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_REGISTRAR_SPECIFIED: 980b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "PIN from peer Display"); 9818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PIN_KEYPAD) { 982b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "We have wps_method=%s -> incompatible", 9838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 9848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 9858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 9888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_USER_SPECIFIED: 989b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Peer entered PIN on Keypad"); 9901f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (dev->wps_method != WPS_PIN_DISPLAY) { 991b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "We have wps_method=%s -> incompatible", 9928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 9938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 9948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 9978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_PUSHBUTTON: 998b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Peer using pushbutton"); 9998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PBC) { 1000b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "We have wps_method=%s -> incompatible", 10018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 10028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 10038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 10068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 1007b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unsupported Device Password ID %d", 10088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dev_password_id); 10098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 10108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1013a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (go && p2p_go_select_channel(p2p, dev, &status) < 0) 1014a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt goto fail; 10158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_GO_NEG); 10178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_clear_timeout(p2p); 10188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1019b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "GO Negotiation with " MACSTR, MAC2STR(sa)); 10208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(dev->intended_addr, msg.intended_addr, ETH_ALEN); 10218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtfail: 10238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt conf = p2p_build_go_neg_conf(p2p, dev, msg.dialog_token, status, 10248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel, go); 10258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 10268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (conf == NULL) 10278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 1028b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Sending GO Negotiation Confirm"); 10298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (status == P2P_SC_SUCCESS) { 10308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM; 10318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_state = go ? LOCAL_GO : REMOTE_GO; 10328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 10338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_NO_PENDING_ACTION; 10348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rx_freq > 0) 10358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = rx_freq; 10368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 10378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = dev->listen_freq; 10388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_send_action(p2p, freq, sa, p2p->cfg->dev_addr, sa, 103904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt wpabuf_head(conf), wpabuf_len(conf), 0) < 0) { 1040b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Failed to send Action frame"); 10418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_go_neg_failed(p2p, dev, -1); 10428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(conf); 10449cdf1b905fae57dea42506a1af67f6ece544b261Dmitry Shmidt if (status != P2P_SC_SUCCESS) { 1045b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "GO Negotiation failed"); 10469cdf1b905fae57dea42506a1af67f6ece544b261Dmitry Shmidt p2p_go_neg_failed(p2p, dev, status); 10479cdf1b905fae57dea42506a1af67f6ece544b261Dmitry Shmidt } 10488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 10498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa, 10528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t len) 10538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 10548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev; 10558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_message msg; 10568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1057b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Received GO Negotiation Confirm from " MACSTR, 10588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 10598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_get_device(p2p, sa); 10608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev == NULL || dev->wps_method == WPS_NOT_READY || 10618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev != p2p->go_neg_peer) { 1062b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Not ready for GO negotiation with " MACSTR, 10638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 10648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 10658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->pending_action_state == P2P_PENDING_GO_NEG_RESPONSE) { 1068b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Stopped waiting for TX status on GO Negotiation Response since we already received Confirmation"); 10698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_NO_PENDING_ACTION; 10708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_parse(data, len, &msg)) 10738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 10748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 1076b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Was not expecting GO Negotiation Confirm - ignore"); 10778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 10788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 10808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.dialog_token != dev->dialog_token) { 1082b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unexpected Dialog Token %u (expected %u)", 10838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dialog_token, dev->dialog_token); 10848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 10858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 10868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.status) { 1089b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Status attribute received"); 10908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 10918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 10928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*msg.status) { 1094b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "GO Negotiation rejected: status %d", *msg.status); 10959cdf1b905fae57dea42506a1af67f6ece544b261Dmitry Shmidt p2p_go_neg_failed(p2p, dev, *msg.status); 10968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 10978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 10988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->go_state == REMOTE_GO && msg.group_id) { 11018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Store SSID for Provisioning step */ 11028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = msg.group_id_len - ETH_ALEN; 11038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(p2p->ssid, msg.group_id + ETH_ALEN, p2p->ssid_len); 11048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (dev->go_state == REMOTE_GO) { 1105b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory P2P Group ID attribute missing from GO Negotiation Confirmation"); 11068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = 0; 11079cdf1b905fae57dea42506a1af67f6ece544b261Dmitry Shmidt p2p_go_neg_failed(p2p, dev, P2P_SC_FAIL_INVALID_PARAMS); 11088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 11098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.operating_channel) { 1113b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory Operating Channel attribute missing from GO Negotiation Confirmation"); 11148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 11158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 11168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 1118b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt } else if (dev->go_state == REMOTE_GO) { 1119b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt int oper_freq = p2p_channel_to_freq(msg.operating_channel[3], 1120b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt msg.operating_channel[4]); 1121b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt if (oper_freq != dev->oper_freq) { 1122b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt p2p_dbg(p2p, "Updated peer (GO) operating channel preference from %d MHz to %d MHz", 1123b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt dev->oper_freq, oper_freq); 1124b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt dev->oper_freq = oper_freq; 1125b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt } 11268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1128f06196652a3e12af00503f4a548c56d4e60f7246Irfan Sheriff#ifdef ANDROID_P2P 1129af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff if (msg.operating_channel) { 11304b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt dev->oper_freq = p2p_channel_to_freq(msg.operating_channel[3], 1131af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff msg.operating_channel[4]); 1132b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "P2P: Peer operating channel preference: %d MHz", 1133b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt dev->oper_freq); 1134af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff } else 1135af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff dev->oper_freq = 0; 1136f06196652a3e12af00503f4a548c56d4e60f7246Irfan Sheriff#endif 1137af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff 11388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.channel_list) { 1139b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory Operating Channel attribute missing from GO Negotiation Confirmation"); 11408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 11418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 11428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 11448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 11478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->go_state == UNKNOWN_GO) { 11498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 11508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * This should not happen since GO negotiation has already 11518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * been completed. 11528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 1153b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unexpected GO Neg state - do not know which end becomes GO"); 11548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11572c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen /* 11582c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * The peer could have missed our ctrl::ack frame for GO Negotiation 11592c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * Confirm and continue retransmitting the frame. To reduce the 11602c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * likelihood of the peer not getting successful TX status for the 11612c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * GO Negotiation Confirm frame, wait a short time here before starting 11622c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * the group so that we will remain on the current channel to 11632c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * acknowledge any possible retransmission from the peer. 11642c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen */ 1165b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "20 ms wait on current channel before starting group"); 11662c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen os_sleep(0, 20000); 11672c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen 11688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_go_complete(p2p, dev); 11698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1170