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" 12fb45fd5cfed8bdccd0859c7fc05449fc187e2d06Dmitry Shmidt#include "utils/eloop.h" 138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "common/ieee802_11_defs.h" 142e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt#include "common/wpa_ctrl.h" 158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "wps/wps_defs.h" 168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "p2p_i.h" 178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "p2p.h" 188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int p2p_go_det(u8 own_intent, u8 peer_value) 218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 peer_intent = peer_value >> 1; 238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (own_intent == peer_intent) { 248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (own_intent == P2P_MAX_GO_INTENT) 258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; /* both devices want to become GO */ 268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Use tie breaker bit to determine GO */ 288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return (peer_value & 0x01) ? 0 : 1; 298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return own_intent > peer_intent; 328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own, 368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev, 378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *channel_list, size_t channel_list_len) 388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *pos, *end; 408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_channels *ch; 418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t channels; 428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_channels intersection; 438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ch = &dev->channels; 458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(ch, 0, sizeof(*ch)); 468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = channel_list; 478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt end = channel_list + channel_list_len; 488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (end - pos < 3) 508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(dev->country, pos, 3); 528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "P2P: Peer country", pos, 3); 538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos[2] != 0x04 && os_memcmp(pos, p2p->cfg->country, 2) != 0) { 54b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_info(p2p, "Mismatching country (ours=%c%c peer's=%c%c)", 558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->country[0], p2p->cfg->country[1], 568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos[0], pos[1]); 578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 3; 608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (pos + 2 < end) { 628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_reg_class *cl = &ch->reg_class[ch->reg_classes]; 638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cl->reg_class = *pos++; 648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos + 1 + pos[0] > end) { 65b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_info(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); 79b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Own reg_classes %d peer reg_classes %d intersection reg_classes %d", 808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (int) own->reg_classes, 818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (int) dev->channels.reg_classes, 828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (int) intersection.reg_classes); 838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (intersection.reg_classes == 0) { 84b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_info(p2p, "No common channels found"); 858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int p2p_peer_channels(struct p2p_data *p2p, struct p2p_device *dev, 928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *channel_list, size_t channel_list_len) 938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return p2p_peer_channels_check(p2p, &p2p->channels, dev, 958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt channel_list, channel_list_len); 968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9904949598a23f501be6eec21697465fd46a28840aDmitry Shmidtu16 p2p_wps_method_pw_id(enum p2p_wps_method wps_method) 1008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (wps_method) { 1028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PIN_DISPLAY: 1038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return DEV_PW_REGISTRAR_SPECIFIED; 1048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PIN_KEYPAD: 1058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return DEV_PW_USER_SPECIFIED; 1068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PBC: 1078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return DEV_PW_PUSHBUTTON; 108cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt case WPS_NFC: 109cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt return DEV_PW_NFC_CONNECTION_HANDOVER; 110aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt case WPS_P2PS: 111aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt return DEV_PW_P2PS_DEFAULT; 1128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 1138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return DEV_PW_DEFAULT; 1148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic const char * p2p_wps_method_str(enum p2p_wps_method wps_method) 1198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (wps_method) { 1218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PIN_DISPLAY: 1228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "Display"; 1238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PIN_KEYPAD: 1248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "Keypad"; 1258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PBC: 1268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "PBC"; 127cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt case WPS_NFC: 128cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt return "NFC"; 129aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt case WPS_P2PS: 130aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt return "P2PS"; 1318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 1328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "??"; 1338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * p2p_build_go_neg_req(struct p2p_data *p2p, 1388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *peer) 1398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *buf; 1418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *len; 1428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 group_capab; 14361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt size_t extra = 0; 144cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt u16 pw_id; 1458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 14761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 14861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt extra = wpabuf_len(p2p->wfd_ie_go_neg); 14961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 15061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 1512e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_REQ]) 1522e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_REQ]); 1532e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt 15461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt buf = wpabuf_alloc(1000 + extra); 1558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (buf == NULL) 1568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_public_action_hdr(buf, P2P_GO_NEG_REQ, peer->dialog_token); 1598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = p2p_buf_add_ie_hdr(buf); 1618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab = 0; 1621f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 1638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP; 1641f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 1651f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_RECONN; 1661f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 1678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cross_connect) 1688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 1698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cfg->p2p_intra_bss) 1708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; 17104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p_buf_add_capability(buf, p2p->dev_capab & 17204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 17304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt group_capab); 1749cdf1b905fae57dea42506a1af67f6ece544b261Dmitry Shmidt p2p_buf_add_go_intent(buf, (p2p->go_intent << 1) | peer->tie_breaker); 17561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt p2p_buf_add_config_timeout(buf, p2p->go_timeout, p2p->client_timeout); 1768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_listen_channel(buf, p2p->cfg->country, p2p->cfg->reg_class, 1778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->channel); 1788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->ext_listen_interval) 1798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period, 1808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ext_listen_interval); 1818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_intended_addr(buf, p2p->intended_addr); 182069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_buf_add_channel_list(buf, p2p->cfg->country, &p2p->channels); 1838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_device_info(buf, p2p, peer); 1848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, p2p->cfg->country, 1858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 1868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_update_ie_hdr(buf, len); 1878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* WPS IE with Device Password ID attribute */ 189cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt pw_id = p2p_wps_method_pw_id(peer->wps_method); 190cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (peer->oob_pw_id) 191cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt pw_id = peer->oob_pw_id; 192cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (p2p_build_wps_ie(p2p, buf, pw_id, 0) < 0) { 19368d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt p2p_dbg(p2p, "Failed to build WPS IE for GO Negotiation Request"); 19468d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt wpabuf_free(buf); 19568d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt return NULL; 19668d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt } 1978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 19961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 20061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpabuf_put_buf(buf, p2p->wfd_ie_go_neg); 20161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 20261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 2032e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_REQ]) 2042e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt wpabuf_put_buf(buf, p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_REQ]); 2052e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt 2068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return buf; 2078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev) 2118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *req; 2138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 2148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (dev->flags & P2P_DEV_PD_BEFORE_GO_NEG) { 21604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt u16 config_method; 217b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Use PD-before-GO-Neg workaround for " MACSTR, 21804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt MAC2STR(dev->info.p2p_device_addr)); 21904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (dev->wps_method == WPS_PIN_DISPLAY) 22004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt config_method = WPS_CONFIG_KEYPAD; 22104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt else if (dev->wps_method == WPS_PIN_KEYPAD) 22204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt config_method = WPS_CONFIG_DISPLAY; 22304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt else if (dev->wps_method == WPS_PBC) 22404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt config_method = WPS_CONFIG_PUSHBUTTON; 225aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt else if (dev->wps_method == WPS_P2PS) 226aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt config_method = WPS_CONFIG_P2PS; 22704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt else 22804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt return -1; 22904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt return p2p_prov_disc_req(p2p, dev->info.p2p_device_addr, 230aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt NULL, config_method, 0, 0, 1); 23104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 23204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt 2338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = dev->listen_freq > 0 ? dev->listen_freq : dev->oper_freq; 234cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (dev->oob_go_neg_freq > 0) 235cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt freq = dev->oob_go_neg_freq; 2368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq <= 0) { 237b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Listen/Operating frequency known for the peer " 238b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt MACSTR " to send GO Negotiation Request", 2398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(dev->info.p2p_device_addr)); 2408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt req = p2p_build_go_neg_req(p2p, dev); 2448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (req == NULL) 2458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 246b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Sending GO Negotiation Request"); 2478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_CONNECT); 2488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_PENDING_GO_NEG_REQUEST; 2498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->go_neg_peer = dev; 250fb45fd5cfed8bdccd0859c7fc05449fc187e2d06Dmitry Shmidt eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL); 2518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags |= P2P_DEV_WAIT_GO_NEG_RESPONSE; 2528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->connect_reqs++; 2538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_send_action(p2p, freq, dev->info.p2p_device_addr, 2548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->dev_addr, dev->info.p2p_device_addr, 2558c65289885e84727226d81b3d32856f79c31ee5fDmitry Shmidt wpabuf_head(req), wpabuf_len(req), 500) < 0) { 256b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Failed to send Action frame"); 2578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Use P2P find to recover and retry */ 2588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_timeout(p2p, 0, 0); 25904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } else 26004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt dev->go_neg_req_sent++; 2618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(req); 2638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * p2p_build_go_neg_resp(struct p2p_data *p2p, 2698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *peer, 2708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dialog_token, u8 status, 2718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 tie_breaker) 2728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *buf; 2748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *len; 2758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 group_capab; 27661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt size_t extra = 0; 277cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt u16 pw_id; 2788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 279b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Building GO Negotiation Response"); 28061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 28161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 28261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 28361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt extra = wpabuf_len(p2p->wfd_ie_go_neg); 28461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 28561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 2862e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_RESP]) 2872e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_RESP]); 2882e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt 28961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt buf = wpabuf_alloc(1000 + extra); 2908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (buf == NULL) 2918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 2928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_public_action_hdr(buf, P2P_GO_NEG_RESP, dialog_token); 2948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = p2p_buf_add_ie_hdr(buf); 2968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_status(buf, status); 2978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab = 0; 2988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer && peer->go_state == LOCAL_GO) { 2991f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 3008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP; 3011f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 3021f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt group_capab |= 3031f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt P2P_GROUP_CAPAB_PERSISTENT_RECONN; 3041f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 3058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cross_connect) 3068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 3078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cfg->p2p_intra_bss) 3088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; 3098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 31004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p_buf_add_capability(buf, p2p->dev_capab & 31104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 31204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt group_capab); 3138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_go_intent(buf, (p2p->go_intent << 1) | tie_breaker); 31461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt p2p_buf_add_config_timeout(buf, p2p->go_timeout, p2p->client_timeout); 3158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer && peer->go_state == REMOTE_GO) { 316b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Omit Operating Channel attribute"); 3178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 3188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, p2p->cfg->country, 3198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class, 3208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel); 3218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_intended_addr(buf, p2p->intended_addr); 323069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff if (status || peer == NULL) { 324069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_buf_add_channel_list(buf, p2p->cfg->country, 325069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff &p2p->channels); 326069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff } else if (peer->go_state == REMOTE_GO) { 327069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_buf_add_channel_list(buf, p2p->cfg->country, 328069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff &p2p->channels); 3298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 330069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff struct p2p_channels res; 331069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_channels_intersect(&p2p->channels, &peer->channels, 332069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff &res); 333069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_buf_add_channel_list(buf, p2p->cfg->country, &res); 3348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_device_info(buf, p2p, peer); 3368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer && peer->go_state == LOCAL_GO) { 3378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_group_id(buf, p2p->cfg->dev_addr, p2p->ssid, 3388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len); 3398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_update_ie_hdr(buf, len); 3418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* WPS IE with Device Password ID attribute */ 343cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt pw_id = p2p_wps_method_pw_id(peer ? peer->wps_method : WPS_NOT_READY); 344cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (peer && peer->oob_pw_id) 345cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt pw_id = peer->oob_pw_id; 346cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (p2p_build_wps_ie(p2p, buf, pw_id, 0) < 0) { 34768d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt p2p_dbg(p2p, "Failed to build WPS IE for GO Negotiation Response"); 34868d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt wpabuf_free(buf); 34968d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt return NULL; 35068d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt } 3518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 35261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 35361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 35461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpabuf_put_buf(buf, p2p->wfd_ie_go_neg); 35561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 35661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 3572e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_RESP]) 3582e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt wpabuf_put_buf(buf, p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_RESP]); 35961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 3608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return buf; 3618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 364a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt/** 365a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * p2p_reselect_channel - Re-select operating channel based on peer information 366a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * @p2p: P2P module context from p2p_init() 367a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * @intersection: Support channel list intersection from local and peer 368a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * 369a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * This function is used to re-select the best channel after having received 370a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * information from the peer to allow supported channel lists to be intersected. 371a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * This can be used to improve initial channel selection done in 372a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * p2p_prepare_channel() prior to the start of GO Negotiation. In addition, this 373a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * can be used for Invitation case. 374a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt */ 37591c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidtvoid p2p_reselect_channel(struct p2p_data *p2p, 37691c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt struct p2p_channels *intersection) 3778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_reg_class *cl; 3798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 3808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 op_reg_class, op_channel; 38104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt unsigned int i; 382a3dc30964aa24aea2b518246f6812663a1103490Dmitry Shmidt const int op_classes_5ghz[] = { 124, 125, 115, 0 }; 383a0d265f81180f341d22511538fa18166e1bbce9fDmitry Shmidt const int op_classes_ht40[] = { 126, 127, 116, 117, 0 }; 384e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt const int op_classes_vht[] = { 128, 0 }; 3858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 386700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt if (p2p->own_freq_preference > 0 && 3874b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt p2p_freq_to_channel(p2p->own_freq_preference, 388700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt &op_reg_class, &op_channel) == 0 && 389700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p_channels_includes(intersection, op_reg_class, op_channel)) { 390b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Pick own channel preference (reg_class %u channel %u) from intersection", 391b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt op_reg_class, op_channel); 392700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p->op_reg_class = op_reg_class; 393700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p->op_channel = op_channel; 394700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt return; 395700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt } 396700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt 397700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt if (p2p->best_freq_overall > 0 && 3984b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt p2p_freq_to_channel(p2p->best_freq_overall, 399700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt &op_reg_class, &op_channel) == 0 && 400700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p_channels_includes(intersection, op_reg_class, op_channel)) { 401b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Pick best overall channel (reg_class %u channel %u) from intersection", 402700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt op_reg_class, op_channel); 403700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p->op_reg_class = op_reg_class; 404700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p->op_channel = op_channel; 405700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt return; 406700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt } 4078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* First, try to pick the best channel from another band */ 4094b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt freq = p2p_channel_to_freq(p2p->op_reg_class, p2p->op_channel); 4108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq >= 2400 && freq < 2500 && p2p->best_freq_5 > 0 && 411700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt !p2p_channels_includes(intersection, p2p->op_reg_class, 412700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p->op_channel) && 4134b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt p2p_freq_to_channel(p2p->best_freq_5, 4148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &op_reg_class, &op_channel) == 0 && 4158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_includes(intersection, op_reg_class, op_channel)) { 416b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Pick best 5 GHz channel (reg_class %u channel %u) from intersection", 4178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt op_reg_class, op_channel); 4188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class = op_reg_class; 4198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel = op_channel; 4208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 4218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq >= 4900 && freq < 6000 && p2p->best_freq_24 > 0 && 424700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt !p2p_channels_includes(intersection, p2p->op_reg_class, 425700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p->op_channel) && 4264b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt p2p_freq_to_channel(p2p->best_freq_24, 4278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &op_reg_class, &op_channel) == 0 && 4288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_includes(intersection, op_reg_class, op_channel)) { 429b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Pick best 2.4 GHz channel (reg_class %u channel %u) from intersection", 4308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt op_reg_class, op_channel); 4318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class = op_reg_class; 4328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel = op_channel; 4338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 4348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 43604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt /* Select channel with highest preference if the peer supports it */ 43704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt for (i = 0; p2p->cfg->pref_chan && i < p2p->cfg->num_pref_chan; i++) { 43804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (p2p_channels_includes(intersection, 43904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->cfg->pref_chan[i].op_class, 44004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->cfg->pref_chan[i].chan)) { 44104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->op_reg_class = p2p->cfg->pref_chan[i].op_class; 44204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->op_channel = p2p->cfg->pref_chan[i].chan; 443b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Pick highest preferred channel (op_class %u channel %u) from intersection", 44404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->op_reg_class, p2p->op_channel); 44504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt return; 44604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 44704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 44804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt 44968d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt /* Try a channel where we might be able to use VHT */ 450e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt if (p2p_channel_select(intersection, op_classes_vht, 451e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt &p2p->op_reg_class, &p2p->op_channel) == 0) { 452e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt p2p_dbg(p2p, "Pick possible VHT channel (op_class %u channel %u) from intersection", 453e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt p2p->op_reg_class, p2p->op_channel); 454e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt return; 45568d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt } 45668d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt 457a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt /* Try a channel where we might be able to use HT40 */ 458e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt if (p2p_channel_select(intersection, op_classes_ht40, 459e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt &p2p->op_reg_class, &p2p->op_channel) == 0) { 460e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt p2p_dbg(p2p, "Pick possible HT40 channel (op_class %u channel %u) from intersection", 461e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt p2p->op_reg_class, p2p->op_channel); 462e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt return; 463a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 464a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 46503b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel /* Prefer a 5 GHz channel */ 466e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt if (p2p_channel_select(intersection, op_classes_5ghz, 467e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt &p2p->op_reg_class, &p2p->op_channel) == 0) { 468e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt p2p_dbg(p2p, "Pick possible 5 GHz channel (op_class %u channel %u) from intersection", 469e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt p2p->op_reg_class, p2p->op_channel); 470e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt return; 47103b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel } 47203b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel 473a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt /* 474a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * Try to see if the original channel is in the intersection. If 475a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * so, no need to change anything, as it already contains some 476a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * randomness. 477a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt */ 478a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (p2p_channels_includes(intersection, p2p->op_reg_class, 479a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->op_channel)) { 480b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Using original operating class and channel (op_class %u channel %u) from intersection", 481a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 482a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt return; 483a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 484a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 4858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 4868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Fall back to whatever is included in the channel intersection since 4878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * no better options seems to be available. 4888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 4898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cl = &intersection->reg_class[0]; 490b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Pick another channel (reg_class %u channel %u) from intersection", 4918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cl->reg_class, cl->channel[0]); 4928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class = cl->reg_class; 4938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel = cl->channel[0]; 4948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 497aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidtint p2p_go_select_channel(struct p2p_data *p2p, struct p2p_device *dev, 498aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt u8 *status) 499a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt{ 50068d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt struct p2p_channels tmp, intersection; 501a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 5024ce9c87407c036fc83eb5a6044ddf976c86f53fcDmitry Shmidt p2p_channels_dump(p2p, "own channels", &p2p->channels); 5034ce9c87407c036fc83eb5a6044ddf976c86f53fcDmitry Shmidt p2p_channels_dump(p2p, "peer channels", &dev->channels); 50468d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt p2p_channels_intersect(&p2p->channels, &dev->channels, &tmp); 50568d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt p2p_channels_dump(p2p, "intersection", &tmp); 50668d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt p2p_channels_remove_freqs(&tmp, &p2p->no_go_freq); 50768d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt p2p_channels_dump(p2p, "intersection after no-GO removal", &tmp); 50868d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt p2p_channels_intersect(&tmp, &p2p->cfg->channels, &intersection); 50968d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt p2p_channels_dump(p2p, "intersection with local channel list", 51068d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt &intersection); 511a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (intersection.reg_classes == 0 || 512a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt intersection.reg_class[0].channels == 0) { 513a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt *status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 514b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No common channels found"); 515a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt return -1; 516a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 517a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 518a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (!p2p_channels_includes(&intersection, p2p->op_reg_class, 519a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->op_channel)) { 520a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (dev->flags & P2P_DEV_FORCE_FREQ) { 521a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt *status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 522b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Peer does not support the forced channel"); 523a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt return -1; 524a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 525a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 526b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Selected operating channel (op_class %u channel %u) not acceptable to the peer", 527b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 528a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p_reselect_channel(p2p, &intersection); 529a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } else if (!(dev->flags & P2P_DEV_FORCE_FREQ) && 530a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt !p2p->cfg->cfg_op_channel) { 531b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Try to optimize channel selection with peer information received; previously selected op_class %u channel %u", 532a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 533a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p_reselect_channel(p2p, &intersection); 534a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 535a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 536a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (!p2p->ssid_set) { 537a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p_build_ssid(p2p, p2p->ssid, &p2p->ssid_len); 538a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->ssid_set = 1; 539a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 540a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 541a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt return 0; 542a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt} 543a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 544a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 5458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa, 5468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t len, int rx_freq) 5478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev = NULL; 5498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *resp; 5508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_message msg; 5518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 status = P2P_SC_FAIL_INVALID_PARAMS; 5528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int tie_breaker = 0; 5538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 5548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 555b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Received GO Negotiation Request from " MACSTR "(freq=%d)", 556b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt MAC2STR(sa), rx_freq); 5578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_parse(data, len, &msg)) 5598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 5608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.capability) { 562b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory Capability attribute missing from GO Negotiation Request"); 5638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 5648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 5668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.go_intent) 5698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tie_breaker = *msg.go_intent & 0x01; 5708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else { 571b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory GO Intent attribute missing from GO Negotiation Request"); 5728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 5738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 5758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.config_timeout) { 578b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory Configuration Timeout attribute missing from GO Negotiation Request"); 5798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 5808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 5828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.listen_channel) { 585b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Listen Channel attribute received"); 5868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.operating_channel) { 589b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Operating Channel attribute received"); 5908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.channel_list) { 593b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Channel List attribute received"); 5948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.intended_addr) { 597b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Intended P2P Interface Address attribute received"); 5988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.p2p_device_info) { 601b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No P2P Device Info attribute received"); 6028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(msg.p2p_device_addr, sa, ETH_ALEN) != 0) { 606b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unexpected GO Negotiation Request SA=" MACSTR 6078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " != dev_addr=" MACSTR, 6088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa), MAC2STR(msg.p2p_device_addr)); 6098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_get_device(p2p, sa); 6138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.status && *msg.status) { 615b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unexpected Status attribute (%d) in GO Negotiation Request", 616b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt *msg.status); 61796be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt if (dev && p2p->go_neg_peer == dev && 61896be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt *msg.status == P2P_SC_FAIL_REJECTED_BY_USER) { 61996be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt /* 62096be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt * This mechanism for using Status attribute in GO 62196be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt * Negotiation Request is not compliant with the P2P 62296be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt * specification, but some deployed devices use it to 62396be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt * indicate rejection of GO Negotiation in a case where 62496be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt * they have sent out GO Negotiation Response with 62596be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt * status 1. The P2P specification explicitly disallows 62696be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt * this. To avoid unnecessary interoperability issues 62796be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt * and extra frames, mark the pending negotiation as 62896be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt * failed and do not reply to this GO Negotiation 62996be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt * Request frame. 63096be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt */ 63196be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 632fb45fd5cfed8bdccd0859c7fc05449fc187e2d06Dmitry Shmidt p2p_go_neg_failed(p2p, *msg.status); 63396be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt p2p_parse_free(&msg); 63496be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt return; 63596be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt } 6368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev == NULL) 6408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_add_dev_from_go_neg_req(p2p, sa, &msg); 641b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt else if ((dev->flags & P2P_DEV_PROBE_REQ_ONLY) || 642b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt !(dev->flags & P2P_DEV_REPORTED)) 6438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_add_dev_info(p2p, sa, dev, &msg); 6449e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt else if (!dev->listen_freq && !dev->oper_freq) { 6459e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt /* 6469e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt * This may happen if the peer entry was added based on PD 6479e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt * Request and no Probe Request/Response frame has been received 6489e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt * from this peer (or that information has timed out). 6499e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt */ 6509e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt p2p_dbg(p2p, "Update peer " MACSTR 6519e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt " based on GO Neg Req since listen/oper freq not known", 6529e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt MAC2STR(dev->info.p2p_device_addr)); 6539e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt p2p_add_dev_info(p2p, sa, dev, &msg); 6549e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt } 6559e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt 656fb45fd5cfed8bdccd0859c7fc05449fc187e2d06Dmitry Shmidt if (p2p->go_neg_peer && p2p->go_neg_peer == dev) 657fb45fd5cfed8bdccd0859c7fc05449fc187e2d06Dmitry Shmidt eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL); 658fb45fd5cfed8bdccd0859c7fc05449fc187e2d06Dmitry Shmidt 6598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev && dev->flags & P2P_DEV_USER_REJECTED) { 660b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "User has rejected this peer"); 6618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_REJECTED_BY_USER; 662cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } else if (dev == NULL || 663cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt (dev->wps_method == WPS_NOT_READY && 664cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt (p2p->authorized_oob_dev_pw_id == 0 || 665cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt p2p->authorized_oob_dev_pw_id != 666cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt msg.dev_password_id))) { 667b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Not ready for GO negotiation with " MACSTR, 6688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 6698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 6708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->go_neg_req_rx(p2p->cfg->cb_ctx, sa, 6717a53dbb56693ee9f55c0cab1a8297436511e8613Dmitry Shmidt msg.dev_password_id, 6727a53dbb56693ee9f55c0cab1a8297436511e8613Dmitry Shmidt msg.go_intent ? (*msg.go_intent >> 1) : 6737a53dbb56693ee9f55c0cab1a8297436511e8613Dmitry Shmidt 0); 6748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (p2p->go_neg_peer && p2p->go_neg_peer != dev) { 675b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Already in Group Formation with another peer"); 6768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 6778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 6788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int go; 6798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!p2p->go_neg_peer) { 681b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Starting GO Negotiation with previously authorized peer"); 6828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(dev->flags & P2P_DEV_FORCE_FREQ)) { 683b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Use default channel settings"); 6848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class = p2p->cfg->op_reg_class; 6858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel = p2p->cfg->op_channel; 6868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(&p2p->channels, &p2p->cfg->channels, 6878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(struct p2p_channels)); 6888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 689b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Use previously configured forced channel settings"); 6908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags &= ~P2P_DEV_NOT_YET_READY; 6948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.go_intent) { 696b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No GO Intent attribute received"); 6978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((*msg.go_intent >> 1) > P2P_MAX_GO_INTENT) { 700b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Invalid GO Intent value (%u) received", 7018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *msg.go_intent >> 1); 7028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 7038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->go_neg_req_sent && 7068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(sa, p2p->cfg->dev_addr, ETH_ALEN) > 0) { 707b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Do not reply since peer has higher address and GO Neg Request already sent"); 7088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 7098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 7108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt go = p2p_go_det(p2p->go_intent, *msg.go_intent); 7138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go < 0) { 714b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Incompatible GO Intent"); 7158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_BOTH_GO_INTENT_15; 7168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 7178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_peer_channels(p2p, dev, msg.channel_list, 7208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.channel_list_len) < 0) { 721b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No common channels found"); 7228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 7238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 7248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (msg.dev_password_id) { 7278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_REGISTRAR_SPECIFIED: 728b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "PIN from peer Display"); 7298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PIN_KEYPAD) { 730b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "We have wps_method=%s -> incompatible", 7318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 7328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 7338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 7348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 7368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_USER_SPECIFIED: 737b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Peer entered PIN on Keypad"); 7381f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (dev->wps_method != WPS_PIN_DISPLAY) { 739b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "We have wps_method=%s -> incompatible", 7408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 7418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 7428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 7438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 7458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_PUSHBUTTON: 746b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Peer using pushbutton"); 7478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PBC) { 748b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "We have wps_method=%s -> incompatible", 7498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 7508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 7518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 7528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 754aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt case DEV_PW_P2PS_DEFAULT: 755aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt p2p_dbg(p2p, "Peer using P2PS pin"); 756aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt if (dev->wps_method != WPS_P2PS) { 757aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt p2p_dbg(p2p, 758aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt "We have wps_method=%s -> incompatible", 759aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 760aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 761aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt goto fail; 762aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt } 763aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt break; 7648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 765cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (msg.dev_password_id && 766cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt msg.dev_password_id == dev->oob_pw_id) { 767cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt p2p_dbg(p2p, "Peer using NFC"); 768cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (dev->wps_method != WPS_NFC) { 769cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt p2p_dbg(p2p, "We have wps_method=%s -> incompatible", 770cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt p2p_wps_method_str( 771cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt dev->wps_method)); 772cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 773cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt goto fail; 774cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } 775cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt break; 776cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } 777cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt#ifdef CONFIG_WPS_NFC 778cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (p2p->authorized_oob_dev_pw_id && 779cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt msg.dev_password_id == 780cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt p2p->authorized_oob_dev_pw_id) { 781cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt p2p_dbg(p2p, "Using static handover with our device password from NFC Tag"); 782cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt dev->wps_method = WPS_NFC; 783cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt dev->oob_pw_id = p2p->authorized_oob_dev_pw_id; 784cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt break; 785cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } 786cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt#endif /* CONFIG_WPS_NFC */ 787b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unsupported Device Password ID %d", 7888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dev_password_id); 7898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 7908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 7918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 793a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (go && p2p_go_select_channel(p2p, dev, &status) < 0) 794a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt goto fail; 7958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_state = go ? LOCAL_GO : REMOTE_GO; 7974b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt dev->oper_freq = p2p_channel_to_freq(msg.operating_channel[3], 7988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel[4]); 799b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Peer operating channel preference: %d MHz", 800b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt dev->oper_freq); 8018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.config_timeout) { 8038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_timeout = msg.config_timeout[0]; 8048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->client_timeout = msg.config_timeout[1]; 8058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 807b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "GO Negotiation with " MACSTR, MAC2STR(sa)); 8088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->state != P2P_IDLE) 8098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_stop_find_for_freq(p2p, rx_freq); 8108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_GO_NEG); 8118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_clear_timeout(p2p); 8128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->dialog_token = msg.dialog_token; 8138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(dev->intended_addr, msg.intended_addr, ETH_ALEN); 8148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->go_neg_peer = dev; 815fb45fd5cfed8bdccd0859c7fc05449fc187e2d06Dmitry Shmidt eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL); 8168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_SUCCESS; 8178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtfail: 8208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev) 8218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->status = status; 8228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp = p2p_build_go_neg_resp(p2p, dev, msg.dialog_token, status, 8238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !tie_breaker); 8248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 8258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (resp == NULL) 8268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 827b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Sending GO Negotiation Response"); 8288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rx_freq > 0) 8298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = rx_freq; 8308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 8314b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt freq = p2p_channel_to_freq(p2p->cfg->reg_class, 8328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->channel); 8338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq < 0) { 834b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unknown regulatory class/channel"); 8358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(resp); 8368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 8378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (status == P2P_SC_SUCCESS) { 8398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_PENDING_GO_NEG_RESPONSE; 8408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags |= P2P_DEV_WAIT_GO_NEG_CONFIRM; 84104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (os_memcmp(sa, p2p->cfg->dev_addr, ETH_ALEN) < 0) { 84204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt /* 84304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * Peer has smaller address, so the GO Negotiation 84404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * Response from us is expected to complete 84504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * negotiation. Ignore a GO Negotiation Response from 84604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * the peer if it happens to be received after this 84704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * point due to a race condition in GO Negotiation 84804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * Request transmission and processing. 84904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt */ 85004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 85104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 8528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 8538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = 8548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt P2P_PENDING_GO_NEG_RESPONSE_FAILURE; 8558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_send_action(p2p, freq, sa, p2p->cfg->dev_addr, 8568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->dev_addr, 8578c65289885e84727226d81b3d32856f79c31ee5fDmitry Shmidt wpabuf_head(resp), wpabuf_len(resp), 500) < 0) { 858b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Failed to send Action frame"); 8598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(resp); 8628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 8638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * p2p_build_go_neg_conf(struct p2p_data *p2p, 8668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *peer, 8678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dialog_token, u8 status, 8688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *resp_chan, int go) 8698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 8708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *buf; 8718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *len; 8728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_channels res; 8738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 group_capab; 87461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt size_t extra = 0; 8758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 876b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Building GO Negotiation Confirm"); 87761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 87861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 87961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 88061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt extra = wpabuf_len(p2p->wfd_ie_go_neg); 88161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 88261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 8832e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_CONF]) 8842e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_CONF]); 8852e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt 88661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt buf = wpabuf_alloc(1000 + extra); 8878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (buf == NULL) 8888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 8898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_public_action_hdr(buf, P2P_GO_NEG_CONF, dialog_token); 8918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = p2p_buf_add_ie_hdr(buf); 8938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_status(buf, status); 8948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab = 0; 8958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer->go_state == LOCAL_GO) { 8961f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 8978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP; 8981f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 8991f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt group_capab |= 9001f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt P2P_GROUP_CAPAB_PERSISTENT_RECONN; 9011f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 9028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cross_connect) 9038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 9048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cfg->p2p_intra_bss) 9058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; 9068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 90704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p_buf_add_capability(buf, p2p->dev_capab & 90804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 90904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt group_capab); 9108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go || resp_chan == NULL) 9118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, p2p->cfg->country, 9128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class, 9138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel); 9148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 9158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, (const char *) resp_chan, 9168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp_chan[3], resp_chan[4]); 9178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_intersect(&p2p->channels, &peer->channels, &res); 9188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_channel_list(buf, p2p->cfg->country, &res); 9198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go) { 9208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_group_id(buf, p2p->cfg->dev_addr, p2p->ssid, 9218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len); 9228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_update_ie_hdr(buf, len); 9248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 92561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 92661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 92761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpabuf_put_buf(buf, p2p->wfd_ie_go_neg); 92861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 92961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 9302e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_CONF]) 9312e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt wpabuf_put_buf(buf, p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_CONF]); 9322e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt 9338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return buf; 9348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 9358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa, 9388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t len, int rx_freq) 9398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 9408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev; 9418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int go = -1; 9428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_message msg; 9438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 status = P2P_SC_SUCCESS; 9448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 9458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 946b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Received GO Negotiation Response from " MACSTR 9478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " (freq=%d)", MAC2STR(sa), rx_freq); 9488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_get_device(p2p, sa); 9498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev == NULL || dev->wps_method == WPS_NOT_READY || 9508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev != p2p->go_neg_peer) { 951b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Not ready for GO negotiation with " MACSTR, 9528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 9538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 9548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_parse(data, len, &msg)) 9578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 9588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE)) { 960b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Was not expecting GO Negotiation Response - ignore"); 9618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 9628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 9638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 9658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.dialog_token != dev->dialog_token) { 967b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unexpected Dialog Token %u (expected %u)", 9688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dialog_token, dev->dialog_token); 9698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 9708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 9718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.status) { 974b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Status attribute received"); 9758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*msg.status) { 979b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "GO Negotiation rejected: status %d", *msg.status); 9808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_neg_req_sent = 0; 9818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*msg.status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 982b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Wait for the peer to become ready for GO Negotiation"); 9838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags |= P2P_DEV_NOT_YET_READY; 984fb45fd5cfed8bdccd0859c7fc05449fc187e2d06Dmitry Shmidt eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, 985fb45fd5cfed8bdccd0859c7fc05449fc187e2d06Dmitry Shmidt NULL); 986fb45fd5cfed8bdccd0859c7fc05449fc187e2d06Dmitry Shmidt eloop_register_timeout(120, 0, p2p_go_neg_wait_timeout, 987fb45fd5cfed8bdccd0859c7fc05449fc187e2d06Dmitry Shmidt p2p, NULL); 988661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt if (p2p->state == P2P_CONNECT_LISTEN) 989661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT); 990661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt else 991661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt p2p_set_state(p2p, P2P_WAIT_PEER_IDLE); 9928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_timeout(p2p, 0, 0); 9938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 994b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Stop GO Negotiation attempt"); 995fb45fd5cfed8bdccd0859c7fc05449fc187e2d06Dmitry Shmidt p2p_go_neg_failed(p2p, *msg.status); 9968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 9988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 9998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 10008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.capability) { 1003b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory Capability attribute missing from GO Negotiation Response"); 10048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 10058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 10068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 10088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.p2p_device_info) { 1011b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory P2P Device Info attribute missing from GO Negotiation Response"); 10128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 10138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 10148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 10168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.intended_addr) { 1019b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Intended P2P Interface Address attribute received"); 10208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 10218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.go_intent) { 1025b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No GO Intent attribute received"); 10268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 10278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((*msg.go_intent >> 1) > P2P_MAX_GO_INTENT) { 1030b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Invalid GO Intent value (%u) received", 10318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *msg.go_intent >> 1); 10328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 10338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt go = p2p_go_det(p2p->go_intent, *msg.go_intent); 10378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go < 0) { 1038b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Incompatible GO Intent"); 10398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 10408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!go && msg.group_id) { 10448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Store SSID for Provisioning step */ 10458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = msg.group_id_len - ETH_ALEN; 10468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(p2p->ssid, msg.group_id + ETH_ALEN, p2p->ssid_len); 10478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (!go) { 1048b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory P2P Group ID attribute missing from GO Negotiation Response"); 10498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = 0; 10508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 10518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.config_timeout) { 1055b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory Configuration Timeout attribute missing from GO Negotiation Response"); 10568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 10578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 10588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 10608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 10618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_timeout = msg.config_timeout[0]; 10628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->client_timeout = msg.config_timeout[1]; 10638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.operating_channel && !go) { 10668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 10678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Note: P2P Client may omit Operating Channel attribute to 10688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * indicate it does not have a preference. 10698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 1070b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Operating Channel attribute received"); 10718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 10728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.channel_list) { 1075b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Channel List attribute received"); 10768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 10778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_peer_channels(p2p, dev, msg.channel_list, 10818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.channel_list_len) < 0) { 1082b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No common channels found"); 10838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 10848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.operating_channel) { 10884b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt dev->oper_freq = p2p_channel_to_freq(msg.operating_channel[3], 10898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel[4]); 1090b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Peer operating channel preference: %d MHz", 1091b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt dev->oper_freq); 10928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 10938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->oper_freq = 0; 10948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (msg.dev_password_id) { 10968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_REGISTRAR_SPECIFIED: 1097b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "PIN from peer Display"); 10988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PIN_KEYPAD) { 1099b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "We have wps_method=%s -> incompatible", 11008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 11018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 11028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 11038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 11058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_USER_SPECIFIED: 1106b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Peer entered PIN on Keypad"); 11071f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (dev->wps_method != WPS_PIN_DISPLAY) { 1108b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "We have wps_method=%s -> incompatible", 11098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 11108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 11118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 11128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 11148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_PUSHBUTTON: 1115b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Peer using pushbutton"); 11168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PBC) { 1117b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "We have wps_method=%s -> incompatible", 11188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 11198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 11208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 11218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 1123aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt case DEV_PW_P2PS_DEFAULT: 1124aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt p2p_dbg(p2p, "P2P: Peer using P2PS default pin"); 1125aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt if (dev->wps_method != WPS_P2PS) { 1126aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt p2p_dbg(p2p, "We have wps_method=%s -> incompatible", 1127aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 1128aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 1129aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt goto fail; 1130aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt } 1131aff761db795db8b506c6f6af7ff607856cf85a81Dmitry Shmidt break; 11328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 1133cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (msg.dev_password_id && 1134cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt msg.dev_password_id == dev->oob_pw_id) { 1135cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt p2p_dbg(p2p, "Peer using NFC"); 1136cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (dev->wps_method != WPS_NFC) { 1137cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt p2p_dbg(p2p, "We have wps_method=%s -> incompatible", 1138cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt p2p_wps_method_str(dev->wps_method)); 1139cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 1140cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt goto fail; 1141cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } 1142cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt break; 1143cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } 1144b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unsupported Device Password ID %d", 11458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dev_password_id); 11468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 11478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 11488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1150a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (go && p2p_go_select_channel(p2p, dev, &status) < 0) 1151a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt goto fail; 11528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_GO_NEG); 11548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_clear_timeout(p2p); 11558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1156b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "GO Negotiation with " MACSTR, MAC2STR(sa)); 11578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(dev->intended_addr, msg.intended_addr, ETH_ALEN); 11588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtfail: 1160413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt /* Store GO Negotiation Confirmation to allow retransmission */ 1161413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt wpabuf_free(dev->go_neg_conf); 1162413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt dev->go_neg_conf = p2p_build_go_neg_conf(p2p, dev, msg.dialog_token, 1163413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt status, msg.operating_channel, 1164413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt go); 11658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 1166413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt if (dev->go_neg_conf == NULL) 11678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 1168b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Sending GO Negotiation Confirm"); 11698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (status == P2P_SC_SUCCESS) { 11708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM; 11718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_state = go ? LOCAL_GO : REMOTE_GO; 11728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 11738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_NO_PENDING_ACTION; 11748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rx_freq > 0) 11758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = rx_freq; 11768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 11778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = dev->listen_freq; 1178413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt 1179413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt dev->go_neg_conf_freq = freq; 1180413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt dev->go_neg_conf_sent = 0; 1181413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt 11828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_send_action(p2p, freq, sa, p2p->cfg->dev_addr, sa, 1183413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt wpabuf_head(dev->go_neg_conf), 1184413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt wpabuf_len(dev->go_neg_conf), 200) < 0) { 1185b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Failed to send Action frame"); 1186fb45fd5cfed8bdccd0859c7fc05449fc187e2d06Dmitry Shmidt p2p_go_neg_failed(p2p, -1); 1187fb79edc9df1f20461e90e478363d207348213d35Dmitry Shmidt p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 1188413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt } else 1189413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt dev->go_neg_conf_sent++; 11909cdf1b905fae57dea42506a1af67f6ece544b261Dmitry Shmidt if (status != P2P_SC_SUCCESS) { 1191b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "GO Negotiation failed"); 1192fb45fd5cfed8bdccd0859c7fc05449fc187e2d06Dmitry Shmidt p2p_go_neg_failed(p2p, status); 11939cdf1b905fae57dea42506a1af67f6ece544b261Dmitry Shmidt } 11948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 11958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa, 11988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t len) 11998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 12008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev; 12018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_message msg; 12028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1203b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Received GO Negotiation Confirm from " MACSTR, 12048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 12058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_get_device(p2p, sa); 12068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev == NULL || dev->wps_method == WPS_NOT_READY || 12078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev != p2p->go_neg_peer) { 1208b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Not ready for GO negotiation with " MACSTR, 12098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 12108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 12118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->pending_action_state == P2P_PENDING_GO_NEG_RESPONSE) { 1214b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Stopped waiting for TX status on GO Negotiation Response since we already received Confirmation"); 12158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_NO_PENDING_ACTION; 12168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_parse(data, len, &msg)) 12198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 12208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 1222b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Was not expecting GO Negotiation Confirm - ignore"); 12239767226d8e6a1adaa33beb9f517ef40dddfa460cDmitry Shmidt p2p_parse_free(&msg); 12248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 12258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 1227344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 12288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.dialog_token != dev->dialog_token) { 1230b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unexpected Dialog Token %u (expected %u)", 12318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dialog_token, dev->dialog_token); 12328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 12338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 12348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.status) { 1237b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Status attribute received"); 12388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 12398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 12408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*msg.status) { 1242b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "GO Negotiation rejected: status %d", *msg.status); 1243fb45fd5cfed8bdccd0859c7fc05449fc187e2d06Dmitry Shmidt p2p_go_neg_failed(p2p, *msg.status); 12448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 12458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 12468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->go_state == REMOTE_GO && msg.group_id) { 12498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Store SSID for Provisioning step */ 12508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = msg.group_id_len - ETH_ALEN; 12518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(p2p->ssid, msg.group_id + ETH_ALEN, p2p->ssid_len); 12528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (dev->go_state == REMOTE_GO) { 1253b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory P2P Group ID attribute missing from GO Negotiation Confirmation"); 12548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = 0; 1255fb45fd5cfed8bdccd0859c7fc05449fc187e2d06Dmitry Shmidt p2p_go_neg_failed(p2p, P2P_SC_FAIL_INVALID_PARAMS); 12568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 12578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 12588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.operating_channel) { 1261b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory Operating Channel attribute missing from GO Negotiation Confirmation"); 12628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 12638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 12648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 12658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 1266b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt } else if (dev->go_state == REMOTE_GO) { 1267b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt int oper_freq = p2p_channel_to_freq(msg.operating_channel[3], 1268b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt msg.operating_channel[4]); 1269b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt if (oper_freq != dev->oper_freq) { 1270b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt p2p_dbg(p2p, "Updated peer (GO) operating channel preference from %d MHz to %d MHz", 1271b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt dev->oper_freq, oper_freq); 1272b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt dev->oper_freq = oper_freq; 1273b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt } 12748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.channel_list) { 1277b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory Operating Channel attribute missing from GO Negotiation Confirmation"); 12788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 12798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 12808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 12818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 12828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 12858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->go_state == UNKNOWN_GO) { 12878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 12888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * This should not happen since GO negotiation has already 12898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * been completed. 12908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 1291b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unexpected GO Neg state - do not know which end becomes GO"); 12928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 12938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12952c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen /* 12962c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * The peer could have missed our ctrl::ack frame for GO Negotiation 12972c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * Confirm and continue retransmitting the frame. To reduce the 12982c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * likelihood of the peer not getting successful TX status for the 12992c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * GO Negotiation Confirm frame, wait a short time here before starting 13002c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * the group so that we will remain on the current channel to 13012c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * acknowledge any possible retransmission from the peer. 13022c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen */ 1303b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "20 ms wait on current channel before starting group"); 13042c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen os_sleep(0, 20000); 13052c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen 13068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_go_complete(p2p, dev); 13078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1308