18d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/* 28d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Wi-Fi Direct - P2P Group Owner Negotiation 38d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Copyright (c) 2009-2010, Atheros Communications 48d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 5c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt * This software may be distributed under the terms of the BSD license. 6c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt * See README for more details. 78d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 88d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 98d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "includes.h" 108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "common.h" 128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "common/ieee802_11_defs.h" 138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "wps/wps_defs.h" 148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "p2p_i.h" 158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "p2p.h" 168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int p2p_go_det(u8 own_intent, u8 peer_value) 198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 peer_intent = peer_value >> 1; 218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (own_intent == peer_intent) { 228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (own_intent == P2P_MAX_GO_INTENT) 238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; /* both devices want to become GO */ 248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Use tie breaker bit to determine GO */ 268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return (peer_value & 0x01) ? 0 : 1; 278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return own_intent > peer_intent; 308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own, 348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev, 358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *channel_list, size_t channel_list_len) 368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *pos, *end; 388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_channels *ch; 398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t channels; 408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_channels intersection; 418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ch = &dev->channels; 438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(ch, 0, sizeof(*ch)); 448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = channel_list; 458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt end = channel_list + channel_list_len; 468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (end - pos < 3) 488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(dev->country, pos, 3); 508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "P2P: Peer country", pos, 3); 518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos[2] != 0x04 && os_memcmp(pos, p2p->cfg->country, 2) != 0) { 528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, 538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mismatching country (ours=%c%c peer's=%c%c)", 548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->country[0], p2p->cfg->country[1], 558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos[0], pos[1]); 568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 3; 598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (pos + 2 < end) { 618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_reg_class *cl = &ch->reg_class[ch->reg_classes]; 628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cl->reg_class = *pos++; 638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos + 1 + pos[0] > end) { 648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, 658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Invalid peer Channel List"); 668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt channels = *pos++; 698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cl->channels = channels > P2P_MAX_REG_CLASS_CHANNELS ? 708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt P2P_MAX_REG_CLASS_CHANNELS : channels; 718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(cl->channel, pos, cl->channels); 728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += channels; 738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ch->reg_classes++; 748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ch->reg_classes == P2P_MAX_REG_CLASSES) 758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_intersect(own, &dev->channels, &intersection); 798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Own reg_classes %d " 808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "peer reg_classes %d intersection reg_classes %d", 818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (int) own->reg_classes, 828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (int) dev->channels.reg_classes, 838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (int) intersection.reg_classes); 848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (intersection.reg_classes == 0) { 858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, 868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No common channels found"); 878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int p2p_peer_channels(struct p2p_data *p2p, struct p2p_device *dev, 948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *channel_list, size_t channel_list_len) 958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return p2p_peer_channels_check(p2p, &p2p->channels, dev, 978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt channel_list, channel_list_len); 988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10104949598a23f501be6eec21697465fd46a28840aDmitry Shmidtu16 p2p_wps_method_pw_id(enum p2p_wps_method wps_method) 1028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (wps_method) { 1048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PIN_DISPLAY: 1058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return DEV_PW_REGISTRAR_SPECIFIED; 1068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PIN_KEYPAD: 1078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return DEV_PW_USER_SPECIFIED; 1088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PBC: 1098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return DEV_PW_PUSHBUTTON; 1108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 1118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return DEV_PW_DEFAULT; 1128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic const char * p2p_wps_method_str(enum p2p_wps_method wps_method) 1178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (wps_method) { 1198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PIN_DISPLAY: 1208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "Display"; 1218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PIN_KEYPAD: 1228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "Keypad"; 1238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PBC: 1248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "PBC"; 1258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 1268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "??"; 1278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * p2p_build_go_neg_req(struct p2p_data *p2p, 1328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *peer) 1338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *buf; 1358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *len; 1368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 group_capab; 13761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt size_t extra = 0; 1388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 14061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 14161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt extra = wpabuf_len(p2p->wfd_ie_go_neg); 14261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 14361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 14461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt buf = wpabuf_alloc(1000 + extra); 1458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (buf == NULL) 1468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->dialog_token++; 1498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer->dialog_token == 0) 1508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peer->dialog_token = 1; 1518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_public_action_hdr(buf, P2P_GO_NEG_REQ, peer->dialog_token); 1528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = p2p_buf_add_ie_hdr(buf); 1548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab = 0; 1551f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 1568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP; 1571f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 1581f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_RECONN; 1591f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 1608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cross_connect) 1618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 1628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cfg->p2p_intra_bss) 1638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; 16404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p_buf_add_capability(buf, p2p->dev_capab & 16504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 16604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt group_capab); 1678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_go_intent(buf, (p2p->go_intent << 1) | 1688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->next_tie_breaker); 1698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->next_tie_breaker = !p2p->next_tie_breaker; 17061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt p2p_buf_add_config_timeout(buf, p2p->go_timeout, p2p->client_timeout); 1718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_listen_channel(buf, p2p->cfg->country, p2p->cfg->reg_class, 1728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->channel); 1738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->ext_listen_interval) 1748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period, 1758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ext_listen_interval); 1768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_intended_addr(buf, p2p->intended_addr); 177069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_buf_add_channel_list(buf, p2p->cfg->country, &p2p->channels); 1788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_device_info(buf, p2p, peer); 1798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, p2p->cfg->country, 1808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 1818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_update_ie_hdr(buf, len); 1828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* WPS IE with Device Password ID attribute */ 1848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_build_wps_ie(p2p, buf, p2p_wps_method_pw_id(peer->wps_method), 0); 1858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 18661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 18761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 18861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpabuf_put_buf(buf, p2p->wfd_ie_go_neg); 18961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 19061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 1918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return buf; 1928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev) 1968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *req; 1988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 1998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 20004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (dev->flags & P2P_DEV_PD_BEFORE_GO_NEG) { 20104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt u16 config_method; 20204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 20304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt "P2P: Use PD-before-GO-Neg workaround for " MACSTR, 20404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt MAC2STR(dev->info.p2p_device_addr)); 20504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (dev->wps_method == WPS_PIN_DISPLAY) 20604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt config_method = WPS_CONFIG_KEYPAD; 20704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt else if (dev->wps_method == WPS_PIN_KEYPAD) 20804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt config_method = WPS_CONFIG_DISPLAY; 20904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt else if (dev->wps_method == WPS_PBC) 21004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt config_method = WPS_CONFIG_PUSHBUTTON; 21104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt else 21204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt return -1; 21304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt return p2p_prov_disc_req(p2p, dev->info.p2p_device_addr, 21404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt config_method, 0, 0); 21504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 21604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt 2178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = dev->listen_freq > 0 ? dev->listen_freq : dev->oper_freq; 2188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq <= 0) { 2198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Listen/Operating frequency known for the " 2218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "peer " MACSTR " to send GO Negotiation Request", 2228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(dev->info.p2p_device_addr)); 2238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt req = p2p_build_go_neg_req(p2p, dev); 2278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (req == NULL) 2288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Sending GO Negotiation Request"); 2318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_CONNECT); 2328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_PENDING_GO_NEG_REQUEST; 2338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->go_neg_peer = dev; 2348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags |= P2P_DEV_WAIT_GO_NEG_RESPONSE; 2358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->connect_reqs++; 2368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_send_action(p2p, freq, dev->info.p2p_device_addr, 2378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->dev_addr, dev->info.p2p_device_addr, 2388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_head(req), wpabuf_len(req), 200) < 0) { 2398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Failed to send Action frame"); 2418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Use P2P find to recover and retry */ 2428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_timeout(p2p, 0, 0); 24304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } else 24404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt dev->go_neg_req_sent++; 2458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(req); 2478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * p2p_build_go_neg_resp(struct p2p_data *p2p, 2538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *peer, 2548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dialog_token, u8 status, 2558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 tie_breaker) 2568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *buf; 2588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *len; 2598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 group_capab; 26061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt size_t extra = 0; 2618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 2638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Building GO Negotiation Response"); 26461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 26561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 26661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 26761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt extra = wpabuf_len(p2p->wfd_ie_go_neg); 26861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 26961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 27061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt buf = wpabuf_alloc(1000 + extra); 2718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (buf == NULL) 2728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 2738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_public_action_hdr(buf, P2P_GO_NEG_RESP, dialog_token); 2758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = p2p_buf_add_ie_hdr(buf); 2778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_status(buf, status); 2788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab = 0; 2798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer && peer->go_state == LOCAL_GO) { 2801f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 2818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP; 2821f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 2831f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt group_capab |= 2841f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt P2P_GROUP_CAPAB_PERSISTENT_RECONN; 2851f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 2868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cross_connect) 2878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 2888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cfg->p2p_intra_bss) 2898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; 2908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 29104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p_buf_add_capability(buf, p2p->dev_capab & 29204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 29304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt group_capab); 2948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_go_intent(buf, (p2p->go_intent << 1) | tie_breaker); 29561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt p2p_buf_add_config_timeout(buf, p2p->go_timeout, p2p->client_timeout); 2968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer && peer->go_state == REMOTE_GO) { 297069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Omit Operating " 298069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff "Channel attribute"); 2998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 3008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, p2p->cfg->country, 3018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class, 3028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel); 3038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_intended_addr(buf, p2p->intended_addr); 305af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff 306069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff if (status || peer == NULL) { 307069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_buf_add_channel_list(buf, p2p->cfg->country, 308069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff &p2p->channels); 309069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff } else if (peer->go_state == REMOTE_GO) { 310069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_buf_add_channel_list(buf, p2p->cfg->country, 311069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff &p2p->channels); 3128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 313069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff struct p2p_channels res; 314069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_channels_intersect(&p2p->channels, &peer->channels, 315069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff &res); 316069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_buf_add_channel_list(buf, p2p->cfg->country, &res); 3178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 318af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff 3198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_device_info(buf, p2p, peer); 3208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer && peer->go_state == LOCAL_GO) { 3218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_group_id(buf, p2p->cfg->dev_addr, p2p->ssid, 3228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len); 3238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_update_ie_hdr(buf, len); 3258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* WPS IE with Device Password ID attribute */ 3278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_build_wps_ie(p2p, buf, 3288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_pw_id(peer ? peer->wps_method : 3298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_NOT_READY), 0); 3308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 33161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 33261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 33361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpabuf_put_buf(buf, p2p->wfd_ie_go_neg); 33461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 33561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 33661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 3378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return buf; 3388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 34191c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidtvoid p2p_reselect_channel(struct p2p_data *p2p, 34291c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt struct p2p_channels *intersection) 3438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_reg_class *cl; 3458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 3468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 op_reg_class, op_channel; 34704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt unsigned int i; 3488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Selected operating " 3508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "channel (reg_class %u channel %u) not acceptable to the " 3518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "peer", p2p->op_reg_class, p2p->op_channel); 3528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* First, try to pick the best channel from another band */ 3548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = p2p_channel_to_freq(p2p->cfg->country, p2p->op_reg_class, 3558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel); 3568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq >= 2400 && freq < 2500 && p2p->best_freq_5 > 0 && 3578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_5, 3588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &op_reg_class, &op_channel) == 0 && 3598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_includes(intersection, op_reg_class, op_channel)) { 3608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Pick best 5 GHz " 3618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "channel (reg_class %u channel %u) from intersection", 3628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt op_reg_class, op_channel); 3638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class = op_reg_class; 3648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel = op_channel; 3658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 3668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq >= 4900 && freq < 6000 && p2p->best_freq_24 > 0 && 3698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_24, 3708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &op_reg_class, &op_channel) == 0 && 3718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_includes(intersection, op_reg_class, op_channel)) { 3728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Pick best 2.4 GHz " 3738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "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 38004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt /* Select channel with highest preference if the peer supports it */ 38104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt for (i = 0; p2p->cfg->pref_chan && i < p2p->cfg->num_pref_chan; i++) { 38204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (p2p_channels_includes(intersection, 38304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->cfg->pref_chan[i].op_class, 38404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->cfg->pref_chan[i].chan)) { 38504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->op_reg_class = p2p->cfg->pref_chan[i].op_class; 38604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->op_channel = p2p->cfg->pref_chan[i].chan; 38704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Pick " 38804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt "highest preferred chnnel (op_class %u " 38904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt "channel %u) from intersection", 39004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->op_reg_class, p2p->op_channel); 39104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt return; 39204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 39304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 39404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt 3958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 3968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Fall back to whatever is included in the channel intersection since 3978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * no better options seems to be available. 3988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 3998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cl = &intersection->reg_class[0]; 4008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Pick another channel " 4018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(reg_class %u channel %u) from intersection", 4028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cl->reg_class, cl->channel[0]); 4038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class = cl->reg_class; 4048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel = cl->channel[0]; 4058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa, 4098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t len, int rx_freq) 4108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev = NULL; 4128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *resp; 4138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_message msg; 4148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 status = P2P_SC_FAIL_INVALID_PARAMS; 4158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int tie_breaker = 0; 4168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 4178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Received GO Negotiation Request from " MACSTR 4208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(freq=%d)", MAC2STR(sa), rx_freq); 4218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_parse(data, len, &msg)) 4238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 4248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.capability) { 4268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory Capability attribute missing from GO " 4288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Negotiation Request"); 4298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 4308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 4318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 4328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.go_intent) 4358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tie_breaker = *msg.go_intent & 0x01; 4368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else { 4378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory GO Intent attribute missing from GO " 4398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Negotiation Request"); 4408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 4418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 4428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 4438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.config_timeout) { 4468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory Configuration Timeout attribute " 4488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "missing from GO Negotiation Request"); 4498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 4508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 4518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 4528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.listen_channel) { 4558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Listen Channel attribute received"); 4578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 4588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.operating_channel) { 4608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Operating Channel attribute received"); 4628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 4638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.channel_list) { 4658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Channel List attribute received"); 4678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 4688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.intended_addr) { 4708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Intended P2P Interface Address attribute " 4728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "received"); 4738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 4748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.p2p_device_info) { 4768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No P2P Device Info attribute received"); 4788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 4798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(msg.p2p_device_addr, sa, ETH_ALEN) != 0) { 4828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unexpected GO Negotiation Request SA=" MACSTR 4848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " != dev_addr=" MACSTR, 4858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa), MAC2STR(msg.p2p_device_addr)); 4868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 4878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_get_device(p2p, sa); 4908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.status && *msg.status) { 4928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 4938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unexpected Status attribute (%d) in GO " 4948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Negotiation Request", *msg.status); 4958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 4968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev == NULL) 4998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_add_dev_from_go_neg_req(p2p, sa, &msg); 5008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) 5018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_add_dev_info(p2p, sa, dev, &msg); 5028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev && dev->flags & P2P_DEV_USER_REJECTED) { 5038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: User has rejected this peer"); 5058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_REJECTED_BY_USER; 5068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (dev == NULL || dev->wps_method == WPS_NOT_READY) { 5078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Not ready for GO negotiation with " MACSTR, 5098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 5108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 5118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev) 5128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE; 5138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->go_neg_req_rx(p2p->cfg->cb_ctx, sa, 5148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dev_password_id); 5158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (p2p->go_neg_peer && p2p->go_neg_peer != dev) { 5168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Already in Group Formation with another peer"); 5188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 5198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 5208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int go; 5218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!p2p->go_neg_peer) { 5238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting " 5248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "GO Negotiation with previously authorized " 5258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "peer"); 5268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(dev->flags & P2P_DEV_FORCE_FREQ)) { 5278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Use default channel settings"); 5298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class = p2p->cfg->op_reg_class; 5308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel = p2p->cfg->op_channel; 5318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(&p2p->channels, &p2p->cfg->channels, 5328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(struct p2p_channels)); 5338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 5348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Use previously configured " 5368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "forced channel settings"); 5378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags &= ~P2P_DEV_NOT_YET_READY; 5418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.go_intent) { 5438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No GO Intent attribute received"); 5458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((*msg.go_intent >> 1) > P2P_MAX_GO_INTENT) { 5488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Invalid GO Intent value (%u) received", 5508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *msg.go_intent >> 1); 5518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->go_neg_req_sent && 5558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(sa, p2p->cfg->dev_addr, ETH_ALEN) > 0) { 5568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Do not reply since peer has higher " 5588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "address and GO Neg Request already sent"); 5598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 5608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 5618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt go = p2p_go_det(p2p->go_intent, *msg.go_intent); 5648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go < 0) { 5658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Incompatible GO Intent"); 5678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_BOTH_GO_INTENT_15; 5688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_peer_channels(p2p, dev, msg.channel_list, 5728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.channel_list_len) < 0) { 5738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No common channels found"); 5758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 5768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (msg.dev_password_id) { 5808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_REGISTRAR_SPECIFIED: 5818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: PIN from peer Display"); 5838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PIN_KEYPAD) { 5848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: We have wps_method=%s -> " 5868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "incompatible", 5878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 5888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 5898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 5928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_USER_SPECIFIED: 5938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Peer entered PIN on Keypad"); 5951f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (dev->wps_method != WPS_PIN_DISPLAY) { 5968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 5978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: We have wps_method=%s -> " 5988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "incompatible", 5998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 6008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 6018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 6048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_PUSHBUTTON: 6058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Peer using pushbutton"); 6078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PBC) { 6088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: We have wps_method=%s -> " 6108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "incompatible", 6118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 6128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 6138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 6168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 6178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unsupported Device Password ID %d", 6198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dev_password_id); 6208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 6218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go) { 6258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_channels intersection; 6268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t i; 6278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_intersect(&p2p->channels, &dev->channels, 6288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &intersection); 6298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (intersection.reg_classes == 0 || 6308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt intersection.reg_class[0].channels == 0) { 6318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 6328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No common channels found"); 6348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (i = 0; i < intersection.reg_classes; i++) { 6378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_reg_class *c; 6388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt c = &intersection.reg_class[i]; 6398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "P2P: reg_class %u", 6408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt c->reg_class); 6418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "P2P: channels", 6428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt c->channel, c->channels); 6438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!p2p_channels_includes(&intersection, 6458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class, 6468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel)) 6478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_reselect_channel(p2p, &intersection); 6488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6491f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (!p2p->ssid_set) { 6501f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt p2p_build_ssid(p2p, p2p->ssid, &p2p->ssid_len); 6511f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt p2p->ssid_set = 1; 6521f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 6538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_state = go ? LOCAL_GO : REMOTE_GO; 6568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->oper_freq = p2p_channel_to_freq((const char *) 6578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel, 6588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel[3], 6598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel[4]); 6608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer operating " 6618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "channel preference: %d MHz", dev->oper_freq); 6628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.config_timeout) { 6648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_timeout = msg.config_timeout[0]; 6658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->client_timeout = msg.config_timeout[1]; 6668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: GO Negotiation with " MACSTR, MAC2STR(sa)); 6708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->state != P2P_IDLE) 6718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_stop_find_for_freq(p2p, rx_freq); 6728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_GO_NEG); 6738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_clear_timeout(p2p); 6748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->dialog_token = msg.dialog_token; 6758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(dev->intended_addr, msg.intended_addr, ETH_ALEN); 6768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->go_neg_peer = dev; 6778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_SUCCESS; 6788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtfail: 6818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev) 6828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->status = status; 6838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp = p2p_build_go_neg_resp(p2p, dev, msg.dialog_token, status, 6848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !tie_breaker); 6858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 6868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (resp == NULL) 6878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 6888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Sending GO Negotiation Response"); 6908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rx_freq > 0) 6918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = rx_freq; 6928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 6938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = p2p_channel_to_freq(p2p->cfg->country, 6948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->reg_class, 6958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->channel); 6968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq < 0) { 6978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 6988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unknown regulatory class/channel"); 6998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(resp); 7008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 7018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (status == P2P_SC_SUCCESS) { 7038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_PENDING_GO_NEG_RESPONSE; 7048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags |= P2P_DEV_WAIT_GO_NEG_CONFIRM; 70504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (os_memcmp(sa, p2p->cfg->dev_addr, ETH_ALEN) < 0) { 70604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt /* 70704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * Peer has smaller address, so the GO Negotiation 70804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * Response from us is expected to complete 70904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * negotiation. Ignore a GO Negotiation Response from 71004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * the peer if it happens to be received after this 71104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * point due to a race condition in GO Negotiation 71204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * Request transmission and processing. 71304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt */ 71404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 71504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 7168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 7178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = 7188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt P2P_PENDING_GO_NEG_RESPONSE_FAILURE; 7198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_send_action(p2p, freq, sa, p2p->cfg->dev_addr, 7208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->dev_addr, 72161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpabuf_head(resp), wpabuf_len(resp), 250) < 0) { 7228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 7238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Failed to send Action frame"); 7248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(resp); 7278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * p2p_build_go_neg_conf(struct p2p_data *p2p, 7318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *peer, 7328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dialog_token, u8 status, 7338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *resp_chan, int go) 7348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *buf; 7368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *len; 7378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_channels res; 7388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 group_capab; 73961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt size_t extra = 0; 7408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 7428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Building GO Negotiation Confirm"); 74361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 74461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 74561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 74661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt extra = wpabuf_len(p2p->wfd_ie_go_neg); 74761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 74861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 74961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt buf = wpabuf_alloc(1000 + extra); 7508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (buf == NULL) 7518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 7528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_public_action_hdr(buf, P2P_GO_NEG_CONF, dialog_token); 7548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = p2p_buf_add_ie_hdr(buf); 7568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_status(buf, status); 7578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab = 0; 7588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer->go_state == LOCAL_GO) { 7591f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 7608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP; 7611f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 7621f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt group_capab |= 7631f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt P2P_GROUP_CAPAB_PERSISTENT_RECONN; 7641f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 7658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cross_connect) 7668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 7678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cfg->p2p_intra_bss) 7688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; 7698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 77004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p_buf_add_capability(buf, p2p->dev_capab & 77104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 77204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt group_capab); 7738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go || resp_chan == NULL) 7748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, p2p->cfg->country, 7758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class, 7768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel); 7778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 7788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, (const char *) resp_chan, 7798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp_chan[3], resp_chan[4]); 7808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_intersect(&p2p->channels, &peer->channels, &res); 7818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_channel_list(buf, p2p->cfg->country, &res); 7828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go) { 7838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_group_id(buf, p2p->cfg->dev_addr, p2p->ssid, 7848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len); 7858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_update_ie_hdr(buf, len); 7878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 78861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 78961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 79061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpabuf_put_buf(buf, p2p->wfd_ie_go_neg); 79161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 79261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 7938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return buf; 7948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa, 7988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t len, int rx_freq) 7998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 8008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev; 8018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *conf; 8028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int go = -1; 8038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_message msg; 8048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 status = P2P_SC_SUCCESS; 8058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 8068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Received GO Negotiation Response from " MACSTR 8098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " (freq=%d)", MAC2STR(sa), rx_freq); 8108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_get_device(p2p, sa); 8118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev == NULL || dev->wps_method == WPS_NOT_READY || 8128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev != p2p->go_neg_peer) { 8138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Not ready for GO negotiation with " MACSTR, 8158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 8168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 8178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_parse(data, len, &msg)) 8208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 8218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE)) { 8238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Was not expecting GO Negotiation Response - " 8258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "ignore"); 8268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 8278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 8288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 8308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.dialog_token != dev->dialog_token) { 8328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unexpected Dialog Token %u (expected %u)", 8348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dialog_token, dev->dialog_token); 8358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 8368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 8378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.status) { 8408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Status attribute received"); 8428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 8438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 8448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*msg.status) { 8468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: GO Negotiation rejected: status %d", 8488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *msg.status); 8498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_neg_req_sent = 0; 8508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*msg.status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 8518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Wait for the peer to become ready for " 8538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "GO Negotiation"); 8548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags |= P2P_DEV_NOT_YET_READY; 8558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->wait_count = 0; 8568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_WAIT_PEER_IDLE); 8578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_timeout(p2p, 0, 0); 8588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 8598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Stop GO Negotiation attempt"); 8618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_go_neg_failed(p2p, dev, *msg.status); 8628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 8648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 8658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 8668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.capability) { 8698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory Capability attribute missing from GO " 8718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Negotiation Response"); 8728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 8738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 8748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 8758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 8768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.p2p_device_info) { 8798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory P2P Device Info attribute missing " 8818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "from GO Negotiation Response"); 8828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 8838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 8848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 8858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 8868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.intended_addr) { 8898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Intended P2P Interface Address attribute " 8918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "received"); 8928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 8938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 8948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.go_intent) { 8978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 8988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No GO Intent attribute received"); 8998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((*msg.go_intent >> 1) > P2P_MAX_GO_INTENT) { 9038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Invalid GO Intent value (%u) received", 9058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *msg.go_intent >> 1); 9068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt go = p2p_go_det(p2p->go_intent, *msg.go_intent); 9118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go < 0) { 9128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Incompatible GO Intent"); 9148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 9158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!go && msg.group_id) { 9198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Store SSID for Provisioning step */ 9208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = msg.group_id_len - ETH_ALEN; 9218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(p2p->ssid, msg.group_id + ETH_ALEN, p2p->ssid_len); 9228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (!go) { 9238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory P2P Group ID attribute missing from " 9258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "GO Negotiation Response"); 9268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = 0; 9278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 9288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 9318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.config_timeout) { 9348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory Configuration Timeout attribute " 9368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "missing from GO Negotiation Response"); 9378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 9388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 9418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 9428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_timeout = msg.config_timeout[0]; 9438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->client_timeout = msg.config_timeout[1]; 9448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.operating_channel && !go) { 9478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 9488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Note: P2P Client may omit Operating Channel attribute to 9498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * indicate it does not have a preference. 9508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 9518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Operating Channel attribute received"); 9538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.channel_list) { 9578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "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) { 9658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No common channels found"); 9678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 9688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.operating_channel) { 9728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->oper_freq = p2p_channel_to_freq((const char *) 9738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel, 9748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel[3], 9758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel[4]); 9768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer operating " 9778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "channel preference: %d MHz", dev->oper_freq); 9788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 9798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->oper_freq = 0; 9808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (msg.dev_password_id) { 9828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_REGISTRAR_SPECIFIED: 9838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: PIN from peer Display"); 9858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PIN_KEYPAD) { 9868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: We have wps_method=%s -> " 9888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "incompatible", 9898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 9908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 9918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 9948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_USER_SPECIFIED: 9958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Peer entered PIN on Keypad"); 9971f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (dev->wps_method != WPS_PIN_DISPLAY) { 9988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 9998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: We have wps_method=%s -> " 10008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "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 case DEV_PW_PUSHBUTTON: 10078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Peer using pushbutton"); 10098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PBC) { 10108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: We have wps_method=%s -> " 10128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "incompatible", 10138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 10148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 10158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 10188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 10198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unsupported Device Password ID %d", 10218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dev_password_id); 10228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 10238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go) { 10278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_channels intersection; 10288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t i; 10298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_intersect(&p2p->channels, &dev->channels, 10308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &intersection); 10318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (intersection.reg_classes == 0 || 10328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt intersection.reg_class[0].channels == 0) { 10338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 10348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No common channels found"); 10368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (i = 0; i < intersection.reg_classes; i++) { 10398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_reg_class *c; 10408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt c = &intersection.reg_class[i]; 10418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "P2P: reg_class %u", 10428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt c->reg_class); 10438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "P2P: channels", 10448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt c->channel, c->channels); 10458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!p2p_channels_includes(&intersection, p2p->op_reg_class, 10478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel)) 10488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_reselect_channel(p2p, &intersection); 10498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10501f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (!p2p->ssid_set) { 10511f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt p2p_build_ssid(p2p, p2p->ssid, &p2p->ssid_len); 10521f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt p2p->ssid_set = 1; 10531f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 10548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_GO_NEG); 10578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_clear_timeout(p2p); 10588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: GO Negotiation with " MACSTR, MAC2STR(sa)); 10618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(dev->intended_addr, msg.intended_addr, ETH_ALEN); 10628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtfail: 10648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt conf = p2p_build_go_neg_conf(p2p, dev, msg.dialog_token, status, 10658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel, go); 10668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 10678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (conf == NULL) 10688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 10698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Sending GO Negotiation Confirm"); 10718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (status == P2P_SC_SUCCESS) { 10728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM; 10738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_state = go ? LOCAL_GO : REMOTE_GO; 10748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 10758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_NO_PENDING_ACTION; 10768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rx_freq > 0) 10778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = rx_freq; 10788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 10798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = dev->listen_freq; 10808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_send_action(p2p, freq, sa, p2p->cfg->dev_addr, sa, 108104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt wpabuf_head(conf), wpabuf_len(conf), 0) < 0) { 10828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Failed to send Action frame"); 10848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_go_neg_failed(p2p, dev, -1); 10858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(conf); 10878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 10888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa, 10918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t len) 10928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 10938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev; 10948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_message msg; 10958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 10978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Received GO Negotiation Confirm from " MACSTR, 10988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 10998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_get_device(p2p, sa); 11008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev == NULL || dev->wps_method == WPS_NOT_READY || 11018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev != p2p->go_neg_peer) { 11028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 11038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Not ready for GO negotiation with " MACSTR, 11048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 11058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->pending_action_state == P2P_PENDING_GO_NEG_RESPONSE) { 11098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Stopped waiting " 11108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "for TX status on GO Negotiation Response since we " 11118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "already received Confirmation"); 11128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_NO_PENDING_ACTION; 11138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_parse(data, len, &msg)) 11168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 11198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 11208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Was not expecting GO Negotiation Confirm - " 11218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "ignore"); 11228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 11258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.dialog_token != dev->dialog_token) { 11278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 11288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unexpected Dialog Token %u (expected %u)", 11298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dialog_token, dev->dialog_token); 11308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 11318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.status) { 11358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 11368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: No Status attribute received"); 11378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 11388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*msg.status) { 11418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 11428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: GO Negotiation rejected: status %d", 11438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *msg.status); 11448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 11458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->go_state == REMOTE_GO && msg.group_id) { 11498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Store SSID for Provisioning step */ 11508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = msg.group_id_len - ETH_ALEN; 11518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(p2p->ssid, msg.group_id + ETH_ALEN, p2p->ssid_len); 11528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (dev->go_state == REMOTE_GO) { 11538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 11548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory P2P Group ID attribute missing from " 11558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "GO Negotiation Confirmation"); 11568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = 0; 11578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 11588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 11598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 11618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.operating_channel) { 11648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 11658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory Operating Channel attribute missing " 11668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "from GO Negotiation Confirmation"); 11678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 11688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 11698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 11718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1173f06196652a3e12af00503f4a548c56d4e60f7246Irfan Sheriff#ifdef ANDROID_P2P 1174af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff if (msg.operating_channel) { 1175af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff dev->oper_freq = p2p_channel_to_freq((const char *) 1176af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff msg.operating_channel, 1177af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff msg.operating_channel[3], 1178af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff msg.operating_channel[4]); 1179af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer operating " 1180af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff "channel preference: %d MHz", dev->oper_freq); 1181af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff } else 1182af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff dev->oper_freq = 0; 1183f06196652a3e12af00503f4a548c56d4e60f7246Irfan Sheriff#endif 1184af84a575044f6556994fcc124a955fc0ac0a6736Irfan Sheriff 11858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.channel_list) { 11868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 11878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Mandatory Operating Channel attribute missing " 11888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "from GO Negotiation Confirmation"); 11898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 11908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 11918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 11938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 11968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->go_state == UNKNOWN_GO) { 11988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 11998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * This should not happen since GO negotiation has already 12008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * been completed. 12018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 12028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, 12038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "P2P: Unexpected GO Neg state - do not know which end " 12048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "becomes GO"); 12058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 12068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12082c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen /* 12092c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * The peer could have missed our ctrl::ack frame for GO Negotiation 12102c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * Confirm and continue retransmitting the frame. To reduce the 12112c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * likelihood of the peer not getting successful TX status for the 12122c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * GO Negotiation Confirm frame, wait a short time here before starting 12132c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * the group so that we will remain on the current channel to 12142c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * acknowledge any possible retransmission from the peer. 12152c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen */ 12162c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: 20 ms wait on current " 12172c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen "channel before starting group"); 12182c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen os_sleep(0, 20000); 12192c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen 12208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_go_complete(p2p, dev); 12218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1222