18d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/* 28d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Wi-Fi Direct - P2P Group Owner Negotiation 38d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Copyright (c) 2009-2010, Atheros Communications 48d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 5c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt * This software may be distributed under the terms of the BSD license. 6c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt * See README for more details. 78d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 88d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 98d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "includes.h" 108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "common.h" 128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "common/ieee802_11_defs.h" 132e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt#include "common/wpa_ctrl.h" 148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "wps/wps_defs.h" 158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "p2p_i.h" 168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "p2p.h" 178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int p2p_go_det(u8 own_intent, u8 peer_value) 208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 peer_intent = peer_value >> 1; 228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (own_intent == peer_intent) { 238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (own_intent == P2P_MAX_GO_INTENT) 248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; /* both devices want to become GO */ 258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Use tie breaker bit to determine GO */ 278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return (peer_value & 0x01) ? 0 : 1; 288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return own_intent > peer_intent; 318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own, 358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev, 368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *channel_list, size_t channel_list_len) 378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *pos, *end; 398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_channels *ch; 408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t channels; 418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_channels intersection; 428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ch = &dev->channels; 448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(ch, 0, sizeof(*ch)); 458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = channel_list; 468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt end = channel_list + channel_list_len; 478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (end - pos < 3) 498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(dev->country, pos, 3); 518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "P2P: Peer country", pos, 3); 528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos[2] != 0x04 && os_memcmp(pos, p2p->cfg->country, 2) != 0) { 53b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_info(p2p, "Mismatching country (ours=%c%c peer's=%c%c)", 548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->country[0], p2p->cfg->country[1], 558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos[0], pos[1]); 568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 3; 598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (pos + 2 < end) { 618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_reg_class *cl = &ch->reg_class[ch->reg_classes]; 628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cl->reg_class = *pos++; 638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos + 1 + pos[0] > end) { 64b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_info(p2p, "Invalid peer Channel List"); 658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt channels = *pos++; 688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cl->channels = channels > P2P_MAX_REG_CLASS_CHANNELS ? 698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt P2P_MAX_REG_CLASS_CHANNELS : channels; 708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(cl->channel, pos, cl->channels); 718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += channels; 728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ch->reg_classes++; 738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ch->reg_classes == P2P_MAX_REG_CLASSES) 748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_intersect(own, &dev->channels, &intersection); 78b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Own reg_classes %d peer reg_classes %d intersection reg_classes %d", 798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (int) own->reg_classes, 808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (int) dev->channels.reg_classes, 818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (int) intersection.reg_classes); 828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (intersection.reg_classes == 0) { 83b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_info(p2p, "No common channels found"); 848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int p2p_peer_channels(struct p2p_data *p2p, struct p2p_device *dev, 918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *channel_list, size_t channel_list_len) 928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return p2p_peer_channels_check(p2p, &p2p->channels, dev, 948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt channel_list, channel_list_len); 958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9804949598a23f501be6eec21697465fd46a28840aDmitry Shmidtu16 p2p_wps_method_pw_id(enum p2p_wps_method wps_method) 998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (wps_method) { 1018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PIN_DISPLAY: 1028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return DEV_PW_REGISTRAR_SPECIFIED; 1038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PIN_KEYPAD: 1048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return DEV_PW_USER_SPECIFIED; 1058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PBC: 1068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return DEV_PW_PUSHBUTTON; 107cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt case WPS_NFC: 108cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt return DEV_PW_NFC_CONNECTION_HANDOVER; 1098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 1108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return DEV_PW_DEFAULT; 1118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic const char * p2p_wps_method_str(enum p2p_wps_method wps_method) 1168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (wps_method) { 1188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PIN_DISPLAY: 1198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "Display"; 1208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PIN_KEYPAD: 1218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "Keypad"; 1228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_PBC: 1238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "PBC"; 124cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt case WPS_NFC: 125cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt return "NFC"; 1268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 1278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return "??"; 1288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * p2p_build_go_neg_req(struct p2p_data *p2p, 1338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *peer) 1348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *buf; 1368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *len; 1378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 group_capab; 13861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt size_t extra = 0; 139cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt u16 pw_id; 1408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 14261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 14361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt extra = wpabuf_len(p2p->wfd_ie_go_neg); 14461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 14561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 1462e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_REQ]) 1472e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_REQ]); 1482e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt 14961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt buf = wpabuf_alloc(1000 + extra); 1508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (buf == NULL) 1518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_public_action_hdr(buf, P2P_GO_NEG_REQ, peer->dialog_token); 1548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = p2p_buf_add_ie_hdr(buf); 1568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab = 0; 1571f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 1588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP; 1591f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 1601f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_RECONN; 1611f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 1628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cross_connect) 1638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 1648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cfg->p2p_intra_bss) 1658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; 16604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p_buf_add_capability(buf, p2p->dev_capab & 16704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 16804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt group_capab); 1699cdf1b905fae57dea42506a1af67f6ece544b261Dmitry Shmidt p2p_buf_add_go_intent(buf, (p2p->go_intent << 1) | peer->tie_breaker); 17061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt p2p_buf_add_config_timeout(buf, p2p->go_timeout, p2p->client_timeout); 1718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_listen_channel(buf, p2p->cfg->country, p2p->cfg->reg_class, 1728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->channel); 1738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->ext_listen_interval) 1748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period, 1758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ext_listen_interval); 1768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_intended_addr(buf, p2p->intended_addr); 177069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_buf_add_channel_list(buf, p2p->cfg->country, &p2p->channels); 1788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_device_info(buf, p2p, peer); 1798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, p2p->cfg->country, 1808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 1818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_update_ie_hdr(buf, len); 1828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* WPS IE with Device Password ID attribute */ 184cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt pw_id = p2p_wps_method_pw_id(peer->wps_method); 185cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (peer->oob_pw_id) 186cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt pw_id = peer->oob_pw_id; 187cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (p2p_build_wps_ie(p2p, buf, pw_id, 0) < 0) { 18868d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt p2p_dbg(p2p, "Failed to build WPS IE for GO Negotiation Request"); 18968d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt wpabuf_free(buf); 19068d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt return NULL; 19168d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt } 1928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 19361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 19461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 19561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpabuf_put_buf(buf, p2p->wfd_ie_go_neg); 19661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 19761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 1982e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_REQ]) 1992e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt wpabuf_put_buf(buf, p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_REQ]); 2002e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt 2018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return buf; 2028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev) 2068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *req; 2088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 2098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 21004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (dev->flags & P2P_DEV_PD_BEFORE_GO_NEG) { 21104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt u16 config_method; 212b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Use PD-before-GO-Neg workaround for " MACSTR, 21304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt MAC2STR(dev->info.p2p_device_addr)); 21404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (dev->wps_method == WPS_PIN_DISPLAY) 21504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt config_method = WPS_CONFIG_KEYPAD; 21604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt else if (dev->wps_method == WPS_PIN_KEYPAD) 21704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt config_method = WPS_CONFIG_DISPLAY; 21804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt else if (dev->wps_method == WPS_PBC) 21904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt config_method = WPS_CONFIG_PUSHBUTTON; 22004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt else 22104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt return -1; 22204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt return p2p_prov_disc_req(p2p, dev->info.p2p_device_addr, 223d5e4923d04122f81300fa68fb07d64ede28fd44dDmitry Shmidt config_method, 0, 0, 1); 22404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 22504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt 2268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = dev->listen_freq > 0 ? dev->listen_freq : dev->oper_freq; 227cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (dev->oob_go_neg_freq > 0) 228cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt freq = dev->oob_go_neg_freq; 2298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq <= 0) { 230b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Listen/Operating frequency known for the peer " 231b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt MACSTR " to send GO Negotiation Request", 2328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(dev->info.p2p_device_addr)); 2338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt req = p2p_build_go_neg_req(p2p, dev); 2378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (req == NULL) 2388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 239b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Sending GO Negotiation Request"); 2408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_CONNECT); 2418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_PENDING_GO_NEG_REQUEST; 2428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->go_neg_peer = dev; 2438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags |= P2P_DEV_WAIT_GO_NEG_RESPONSE; 2448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->connect_reqs++; 2458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_send_action(p2p, freq, dev->info.p2p_device_addr, 2468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->dev_addr, dev->info.p2p_device_addr, 2478c65289885e84727226d81b3d32856f79c31ee5fDmitry Shmidt wpabuf_head(req), wpabuf_len(req), 500) < 0) { 248b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Failed to send Action frame"); 2498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Use P2P find to recover and retry */ 2508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_timeout(p2p, 0, 0); 25104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } else 25204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt dev->go_neg_req_sent++; 2538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(req); 2558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * p2p_build_go_neg_resp(struct p2p_data *p2p, 2618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *peer, 2628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dialog_token, u8 status, 2638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 tie_breaker) 2648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *buf; 2668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *len; 2678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 group_capab; 26861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt size_t extra = 0; 269cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt u16 pw_id; 2708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 271b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Building GO Negotiation Response"); 27261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 27361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 27461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 27561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt extra = wpabuf_len(p2p->wfd_ie_go_neg); 27661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 27761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 2782e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_RESP]) 2792e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_RESP]); 2802e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt 28161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt buf = wpabuf_alloc(1000 + extra); 2828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (buf == NULL) 2838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 2848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_public_action_hdr(buf, P2P_GO_NEG_RESP, dialog_token); 2868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = p2p_buf_add_ie_hdr(buf); 2888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_status(buf, status); 2898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab = 0; 2908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer && peer->go_state == LOCAL_GO) { 2911f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 2928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP; 2931f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 2941f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt group_capab |= 2951f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt P2P_GROUP_CAPAB_PERSISTENT_RECONN; 2961f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 2978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cross_connect) 2988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 2998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cfg->p2p_intra_bss) 3008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; 3018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 30204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p_buf_add_capability(buf, p2p->dev_capab & 30304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 30404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt group_capab); 3058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_go_intent(buf, (p2p->go_intent << 1) | tie_breaker); 30661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt p2p_buf_add_config_timeout(buf, p2p->go_timeout, p2p->client_timeout); 3078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer && peer->go_state == REMOTE_GO) { 308b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Omit Operating Channel attribute"); 3098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 3108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, p2p->cfg->country, 3118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class, 3128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel); 3138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_intended_addr(buf, p2p->intended_addr); 315069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff if (status || peer == NULL) { 316069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_buf_add_channel_list(buf, p2p->cfg->country, 317069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff &p2p->channels); 318069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff } else if (peer->go_state == REMOTE_GO) { 319069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_buf_add_channel_list(buf, p2p->cfg->country, 320069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff &p2p->channels); 3218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 322069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff struct p2p_channels res; 323069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_channels_intersect(&p2p->channels, &peer->channels, 324069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff &res); 325069fa2c39ec7120656a2ea8cca83c5ee41ddab60Irfan Sheriff p2p_buf_add_channel_list(buf, p2p->cfg->country, &res); 3268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_device_info(buf, p2p, peer); 3288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer && peer->go_state == LOCAL_GO) { 3298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_group_id(buf, p2p->cfg->dev_addr, p2p->ssid, 3308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len); 3318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_update_ie_hdr(buf, len); 3338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* WPS IE with Device Password ID attribute */ 335cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt pw_id = p2p_wps_method_pw_id(peer ? peer->wps_method : WPS_NOT_READY); 336cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (peer && peer->oob_pw_id) 337cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt pw_id = peer->oob_pw_id; 338cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (p2p_build_wps_ie(p2p, buf, pw_id, 0) < 0) { 33968d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt p2p_dbg(p2p, "Failed to build WPS IE for GO Negotiation Response"); 34068d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt wpabuf_free(buf); 34168d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt return NULL; 34268d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt } 3438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 34461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 34561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 34661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpabuf_put_buf(buf, p2p->wfd_ie_go_neg); 34761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 34861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 3492e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_RESP]) 3502e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt wpabuf_put_buf(buf, p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_RESP]); 35161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 3528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return buf; 3538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 356a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt/** 357a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * p2p_reselect_channel - Re-select operating channel based on peer information 358a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * @p2p: P2P module context from p2p_init() 359a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * @intersection: Support channel list intersection from local and peer 360a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * 361a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * This function is used to re-select the best channel after having received 362a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * information from the peer to allow supported channel lists to be intersected. 363a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * This can be used to improve initial channel selection done in 364a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * p2p_prepare_channel() prior to the start of GO Negotiation. In addition, this 365a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * can be used for Invitation case. 366a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt */ 36791c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidtvoid p2p_reselect_channel(struct p2p_data *p2p, 36891c40cdce17424d9a4718876becf0b7811cf68f2Dmitry Shmidt struct p2p_channels *intersection) 3698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_reg_class *cl; 3718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 3728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 op_reg_class, op_channel; 37304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt unsigned int i; 374a0d265f81180f341d22511538fa18166e1bbce9fDmitry Shmidt const int op_classes_5ghz[] = { 124, 115, 0 }; 375a0d265f81180f341d22511538fa18166e1bbce9fDmitry Shmidt const int op_classes_ht40[] = { 126, 127, 116, 117, 0 }; 376e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt const int op_classes_vht[] = { 128, 0 }; 3778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 378700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt if (p2p->own_freq_preference > 0 && 3794b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt p2p_freq_to_channel(p2p->own_freq_preference, 380700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt &op_reg_class, &op_channel) == 0 && 381700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p_channels_includes(intersection, op_reg_class, op_channel)) { 382b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Pick own channel preference (reg_class %u channel %u) from intersection", 383b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt op_reg_class, op_channel); 384700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p->op_reg_class = op_reg_class; 385700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p->op_channel = op_channel; 386700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt return; 387700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt } 388700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt 389700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt if (p2p->best_freq_overall > 0 && 3904b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt p2p_freq_to_channel(p2p->best_freq_overall, 391700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt &op_reg_class, &op_channel) == 0 && 392700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p_channels_includes(intersection, op_reg_class, op_channel)) { 393b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Pick best overall channel (reg_class %u channel %u) from intersection", 394700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt op_reg_class, op_channel); 395700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p->op_reg_class = op_reg_class; 396700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p->op_channel = op_channel; 397700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt return; 398700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt } 3998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* First, try to pick the best channel from another band */ 4014b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt freq = p2p_channel_to_freq(p2p->op_reg_class, p2p->op_channel); 4028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq >= 2400 && freq < 2500 && p2p->best_freq_5 > 0 && 403700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt !p2p_channels_includes(intersection, p2p->op_reg_class, 404700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p->op_channel) && 4054b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt p2p_freq_to_channel(p2p->best_freq_5, 4068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &op_reg_class, &op_channel) == 0 && 4078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_includes(intersection, op_reg_class, op_channel)) { 408b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Pick best 5 GHz channel (reg_class %u channel %u) from intersection", 4098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt op_reg_class, op_channel); 4108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class = op_reg_class; 4118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel = op_channel; 4128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 4138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq >= 4900 && freq < 6000 && p2p->best_freq_24 > 0 && 416700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt !p2p_channels_includes(intersection, p2p->op_reg_class, 417700a137ab366edc72e371da68ba187b4717ee660Dmitry Shmidt p2p->op_channel) && 4184b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt p2p_freq_to_channel(p2p->best_freq_24, 4198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &op_reg_class, &op_channel) == 0 && 4208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_includes(intersection, op_reg_class, op_channel)) { 421b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Pick best 2.4 GHz channel (reg_class %u channel %u) from intersection", 4228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt op_reg_class, op_channel); 4238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class = op_reg_class; 4248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel = op_channel; 4258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 4268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 42804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt /* Select channel with highest preference if the peer supports it */ 42904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt for (i = 0; p2p->cfg->pref_chan && i < p2p->cfg->num_pref_chan; i++) { 43004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (p2p_channels_includes(intersection, 43104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->cfg->pref_chan[i].op_class, 43204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->cfg->pref_chan[i].chan)) { 43304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->op_reg_class = p2p->cfg->pref_chan[i].op_class; 43404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->op_channel = p2p->cfg->pref_chan[i].chan; 435b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Pick highest preferred channel (op_class %u channel %u) from intersection", 43604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p->op_reg_class, p2p->op_channel); 43704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt return; 43804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 43904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 44004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt 44168d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt /* Try a channel where we might be able to use VHT */ 442e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt if (p2p_channel_select(intersection, op_classes_vht, 443e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt &p2p->op_reg_class, &p2p->op_channel) == 0) { 444e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt p2p_dbg(p2p, "Pick possible VHT channel (op_class %u channel %u) from intersection", 445e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt p2p->op_reg_class, p2p->op_channel); 446e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt return; 44768d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt } 44868d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt 449a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt /* Try a channel where we might be able to use HT40 */ 450e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt if (p2p_channel_select(intersection, op_classes_ht40, 451e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt &p2p->op_reg_class, &p2p->op_channel) == 0) { 452e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt p2p_dbg(p2p, "Pick possible HT40 channel (op_class %u channel %u) from intersection", 453e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt p2p->op_reg_class, p2p->op_channel); 454e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt return; 455a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 456a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 45703b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel /* Prefer a 5 GHz channel */ 458e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt if (p2p_channel_select(intersection, op_classes_5ghz, 459e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt &p2p->op_reg_class, &p2p->op_channel) == 0) { 460e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt p2p_dbg(p2p, "Pick possible 5 GHz channel (op_class %u channel %u) from intersection", 461e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt p2p->op_reg_class, p2p->op_channel); 462e0e48dc666fb14a7bb60264ca87463ba7bc1fe0bDmitry Shmidt return; 46303b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel } 46403b5cdf515ae7259d67b33c22d829495ac80e631Hardik Kantilal Patel 465a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt /* 466a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * Try to see if the original channel is in the intersection. If 467a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * so, no need to change anything, as it already contains some 468a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt * randomness. 469a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt */ 470a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (p2p_channels_includes(intersection, p2p->op_reg_class, 471a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->op_channel)) { 472b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Using original operating class and channel (op_class %u channel %u) from intersection", 473a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 474a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt return; 475a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 476a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 4778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 4788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Fall back to whatever is included in the channel intersection since 4798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * no better options seems to be available. 4808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 4818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cl = &intersection->reg_class[0]; 482b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Pick another channel (reg_class %u channel %u) from intersection", 4838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cl->reg_class, cl->channel[0]); 4848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class = cl->reg_class; 4858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel = cl->channel[0]; 4868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 489a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidtstatic int p2p_go_select_channel(struct p2p_data *p2p, struct p2p_device *dev, 490a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt u8 *status) 491a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt{ 49268d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt struct p2p_channels tmp, intersection; 493a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 4944ce9c87407c036fc83eb5a6044ddf976c86f53fcDmitry Shmidt p2p_channels_dump(p2p, "own channels", &p2p->channels); 4954ce9c87407c036fc83eb5a6044ddf976c86f53fcDmitry Shmidt p2p_channels_dump(p2p, "peer channels", &dev->channels); 49668d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt p2p_channels_intersect(&p2p->channels, &dev->channels, &tmp); 49768d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt p2p_channels_dump(p2p, "intersection", &tmp); 49868d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt p2p_channels_remove_freqs(&tmp, &p2p->no_go_freq); 49968d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt p2p_channels_dump(p2p, "intersection after no-GO removal", &tmp); 50068d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt p2p_channels_intersect(&tmp, &p2p->cfg->channels, &intersection); 50168d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt p2p_channels_dump(p2p, "intersection with local channel list", 50268d0e3ed07847339aedfac8e02f50db68c702e52Dmitry Shmidt &intersection); 503a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (intersection.reg_classes == 0 || 504a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt intersection.reg_class[0].channels == 0) { 505a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt *status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 506b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No common channels found"); 507a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt return -1; 508a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 509a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 510a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (!p2p_channels_includes(&intersection, p2p->op_reg_class, 511a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->op_channel)) { 512a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (dev->flags & P2P_DEV_FORCE_FREQ) { 513a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt *status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 514b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Peer does not support the forced channel"); 515a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt return -1; 516a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 517a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 518b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Selected operating channel (op_class %u channel %u) not acceptable to the peer", 519b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 520a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p_reselect_channel(p2p, &intersection); 521a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } else if (!(dev->flags & P2P_DEV_FORCE_FREQ) && 522a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt !p2p->cfg->cfg_op_channel) { 523b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Try to optimize channel selection with peer information received; previously selected op_class %u channel %u", 524a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->op_reg_class, p2p->op_channel); 525a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p_reselect_channel(p2p, &intersection); 526a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 527a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 528a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (!p2p->ssid_set) { 529a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p_build_ssid(p2p, p2p->ssid, &p2p->ssid_len); 530a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt p2p->ssid_set = 1; 531a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt } 532a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 533a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt return 0; 534a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt} 535a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 536a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt 5378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa, 5388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t len, int rx_freq) 5398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev = NULL; 5418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *resp; 5428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_message msg; 5438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 status = P2P_SC_FAIL_INVALID_PARAMS; 5448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int tie_breaker = 0; 5458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 5468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 547b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Received GO Negotiation Request from " MACSTR "(freq=%d)", 548b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt MAC2STR(sa), rx_freq); 5498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_parse(data, len, &msg)) 5518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 5528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.capability) { 554b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory Capability attribute missing from GO Negotiation Request"); 5558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 5568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 5588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.go_intent) 5618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tie_breaker = *msg.go_intent & 0x01; 5628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else { 563b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory GO Intent attribute missing from GO Negotiation Request"); 5648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 5658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 5678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.config_timeout) { 570b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory Configuration Timeout attribute missing from GO Negotiation Request"); 5718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 5728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 5748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.listen_channel) { 577b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Listen Channel attribute received"); 5788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.operating_channel) { 581b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Operating Channel attribute received"); 5828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.channel_list) { 585b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Channel List attribute received"); 5868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.intended_addr) { 589b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Intended P2P Interface Address attribute received"); 5908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.p2p_device_info) { 593b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No P2P Device Info attribute received"); 5948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 5958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(msg.p2p_device_addr, sa, ETH_ALEN) != 0) { 598b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unexpected GO Negotiation Request SA=" MACSTR 5998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " != dev_addr=" MACSTR, 6008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa), MAC2STR(msg.p2p_device_addr)); 6018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_get_device(p2p, sa); 6058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.status && *msg.status) { 607b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unexpected Status attribute (%d) in GO Negotiation Request", 608b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt *msg.status); 60996be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt if (dev && p2p->go_neg_peer == dev && 61096be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt *msg.status == P2P_SC_FAIL_REJECTED_BY_USER) { 61196be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt /* 61296be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt * This mechanism for using Status attribute in GO 61396be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt * Negotiation Request is not compliant with the P2P 61496be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt * specification, but some deployed devices use it to 61596be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt * indicate rejection of GO Negotiation in a case where 61696be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt * they have sent out GO Negotiation Response with 61796be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt * status 1. The P2P specification explicitly disallows 61896be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt * this. To avoid unnecessary interoperability issues 61996be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt * and extra frames, mark the pending negotiation as 62096be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt * failed and do not reply to this GO Negotiation 62196be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt * Request frame. 62296be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt */ 62396be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 62496be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt p2p_go_neg_failed(p2p, dev, *msg.status); 62596be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt p2p_parse_free(&msg); 62696be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt return; 62796be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt } 6288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev == NULL) 6328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_add_dev_from_go_neg_req(p2p, sa, &msg); 633b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt else if ((dev->flags & P2P_DEV_PROBE_REQ_ONLY) || 634b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt !(dev->flags & P2P_DEV_REPORTED)) 6358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_add_dev_info(p2p, sa, dev, &msg); 6369e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt else if (!dev->listen_freq && !dev->oper_freq) { 6379e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt /* 6389e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt * This may happen if the peer entry was added based on PD 6399e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt * Request and no Probe Request/Response frame has been received 6409e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt * from this peer (or that information has timed out). 6419e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt */ 6429e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt p2p_dbg(p2p, "Update peer " MACSTR 6439e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt " based on GO Neg Req since listen/oper freq not known", 6449e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt MAC2STR(dev->info.p2p_device_addr)); 6459e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt p2p_add_dev_info(p2p, sa, dev, &msg); 6469e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt } 6479e3f8ee32a0c11c56b11985805b5492d04886a99Dmitry Shmidt 6488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev && dev->flags & P2P_DEV_USER_REJECTED) { 649b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "User has rejected this peer"); 6508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_REJECTED_BY_USER; 651cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } else if (dev == NULL || 652cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt (dev->wps_method == WPS_NOT_READY && 653cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt (p2p->authorized_oob_dev_pw_id == 0 || 654cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt p2p->authorized_oob_dev_pw_id != 655cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt msg.dev_password_id))) { 656b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Not ready for GO negotiation with " MACSTR, 6578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 6588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 6598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->go_neg_req_rx(p2p->cfg->cb_ctx, sa, 6608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dev_password_id); 6618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (p2p->go_neg_peer && p2p->go_neg_peer != dev) { 662b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Already in Group Formation with another peer"); 6638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 6648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 6658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int go; 6668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!p2p->go_neg_peer) { 668b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Starting GO Negotiation with previously authorized peer"); 6698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(dev->flags & P2P_DEV_FORCE_FREQ)) { 670b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Use default channel settings"); 6718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class = p2p->cfg->op_reg_class; 6728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel = p2p->cfg->op_channel; 6738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(&p2p->channels, &p2p->cfg->channels, 6748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(struct p2p_channels)); 6758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 676b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Use previously configured forced channel settings"); 6778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags &= ~P2P_DEV_NOT_YET_READY; 6818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.go_intent) { 683b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No GO Intent attribute received"); 6848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((*msg.go_intent >> 1) > P2P_MAX_GO_INTENT) { 687b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Invalid GO Intent value (%u) received", 6888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *msg.go_intent >> 1); 6898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 6908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->go_neg_req_sent && 6938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(sa, p2p->cfg->dev_addr, ETH_ALEN) > 0) { 694b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Do not reply since peer has higher address and GO Neg Request already sent"); 6958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 6968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 6978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt go = p2p_go_det(p2p->go_intent, *msg.go_intent); 7008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go < 0) { 701b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Incompatible GO Intent"); 7028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_BOTH_GO_INTENT_15; 7038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 7048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_peer_channels(p2p, dev, msg.channel_list, 7078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.channel_list_len) < 0) { 708b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No common channels found"); 7098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 7108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 7118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (msg.dev_password_id) { 7148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_REGISTRAR_SPECIFIED: 715b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "PIN from peer Display"); 7168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PIN_KEYPAD) { 717b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "We have wps_method=%s -> incompatible", 7188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 7198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 7208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 7218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 7238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_USER_SPECIFIED: 724b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Peer entered PIN on Keypad"); 7251f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (dev->wps_method != WPS_PIN_DISPLAY) { 726b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "We have wps_method=%s -> incompatible", 7278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 7288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 7298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 7308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 7328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_PUSHBUTTON: 733b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Peer using pushbutton"); 7348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PBC) { 735b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "We have wps_method=%s -> incompatible", 7368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 7378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 7388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 7398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 7418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 742cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (msg.dev_password_id && 743cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt msg.dev_password_id == dev->oob_pw_id) { 744cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt p2p_dbg(p2p, "Peer using NFC"); 745cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (dev->wps_method != WPS_NFC) { 746cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt p2p_dbg(p2p, "We have wps_method=%s -> incompatible", 747cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt p2p_wps_method_str( 748cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt dev->wps_method)); 749cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 750cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt goto fail; 751cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } 752cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt break; 753cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } 754cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt#ifdef CONFIG_WPS_NFC 755cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (p2p->authorized_oob_dev_pw_id && 756cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt msg.dev_password_id == 757cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt p2p->authorized_oob_dev_pw_id) { 758cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt p2p_dbg(p2p, "Using static handover with our device password from NFC Tag"); 759cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt dev->wps_method = WPS_NFC; 760cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt dev->oob_pw_id = p2p->authorized_oob_dev_pw_id; 761cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt break; 762cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } 763cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt#endif /* CONFIG_WPS_NFC */ 764b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unsupported Device Password ID %d", 7658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dev_password_id); 7668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 7678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 7688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 770a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (go && p2p_go_select_channel(p2p, dev, &status) < 0) 771a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt goto fail; 7728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_state = go ? LOCAL_GO : REMOTE_GO; 7744b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt dev->oper_freq = p2p_channel_to_freq(msg.operating_channel[3], 7758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel[4]); 776b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Peer operating channel preference: %d MHz", 777b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt dev->oper_freq); 7788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.config_timeout) { 7808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_timeout = msg.config_timeout[0]; 7818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->client_timeout = msg.config_timeout[1]; 7828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 784b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "GO Negotiation with " MACSTR, MAC2STR(sa)); 7858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->state != P2P_IDLE) 7868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_stop_find_for_freq(p2p, rx_freq); 7878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_GO_NEG); 7888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_clear_timeout(p2p); 7898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->dialog_token = msg.dialog_token; 7908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(dev->intended_addr, msg.intended_addr, ETH_ALEN); 7918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->go_neg_peer = dev; 7928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_SUCCESS; 7938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtfail: 7968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev) 7978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->status = status; 7988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp = p2p_build_go_neg_resp(p2p, dev, msg.dialog_token, status, 7998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !tie_breaker); 8008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 8018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (resp == NULL) 8028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 803b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Sending GO Negotiation Response"); 8048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rx_freq > 0) 8058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = rx_freq; 8068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 8074b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt freq = p2p_channel_to_freq(p2p->cfg->reg_class, 8088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->channel); 8098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (freq < 0) { 810b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unknown regulatory class/channel"); 8118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(resp); 8128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 8138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (status == P2P_SC_SUCCESS) { 8158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_PENDING_GO_NEG_RESPONSE; 8168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags |= P2P_DEV_WAIT_GO_NEG_CONFIRM; 81704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt if (os_memcmp(sa, p2p->cfg->dev_addr, ETH_ALEN) < 0) { 81804949598a23f501be6eec21697465fd46a28840aDmitry Shmidt /* 81904949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * Peer has smaller address, so the GO Negotiation 82004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * Response from us is expected to complete 82104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * negotiation. Ignore a GO Negotiation Response from 82204949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * the peer if it happens to be received after this 82304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * point due to a race condition in GO Negotiation 82404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt * Request transmission and processing. 82504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt */ 82604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 82704949598a23f501be6eec21697465fd46a28840aDmitry Shmidt } 8288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 8298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = 8308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt P2P_PENDING_GO_NEG_RESPONSE_FAILURE; 8318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_send_action(p2p, freq, sa, p2p->cfg->dev_addr, 8328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->dev_addr, 8338c65289885e84727226d81b3d32856f79c31ee5fDmitry Shmidt wpabuf_head(resp), wpabuf_len(resp), 500) < 0) { 834b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Failed to send Action frame"); 8358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(resp); 8388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 8398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * p2p_build_go_neg_conf(struct p2p_data *p2p, 8428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *peer, 8438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 dialog_token, u8 status, 8448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *resp_chan, int go) 8458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 8468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *buf; 8478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *len; 8488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_channels res; 8498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 group_capab; 85061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt size_t extra = 0; 8518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 852b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Building GO Negotiation Confirm"); 85361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 85461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 85561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 85661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt extra = wpabuf_len(p2p->wfd_ie_go_neg); 85761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 85861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 8592e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_CONF]) 8602e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_CONF]); 8612e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt 86261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt buf = wpabuf_alloc(1000 + extra); 8638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (buf == NULL) 8648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 8658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_public_action_hdr(buf, P2P_GO_NEG_CONF, dialog_token); 8678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = p2p_buf_add_ie_hdr(buf); 8698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_status(buf, status); 8708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab = 0; 8718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (peer->go_state == LOCAL_GO) { 8721f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 8738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP; 8741f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 8751f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt group_capab |= 8761f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt P2P_GROUP_CAPAB_PERSISTENT_RECONN; 8771f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt } 8788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cross_connect) 8798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 8808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->cfg->p2p_intra_bss) 8818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; 8828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 88304949598a23f501be6eec21697465fd46a28840aDmitry Shmidt p2p_buf_add_capability(buf, p2p->dev_capab & 88404949598a23f501be6eec21697465fd46a28840aDmitry Shmidt ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 88504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt group_capab); 8868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go || resp_chan == NULL) 8878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, p2p->cfg->country, 8888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_reg_class, 8898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->op_channel); 8908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 8918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_operating_channel(buf, (const char *) resp_chan, 8928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp_chan[3], resp_chan[4]); 8938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_channels_intersect(&p2p->channels, &peer->channels, &res); 8948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_channel_list(buf, p2p->cfg->country, &res); 8958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go) { 8968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_add_group_id(buf, p2p->cfg->dev_addr, p2p->ssid, 8978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len); 8988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_buf_update_ie_hdr(buf, len); 9008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 90161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#ifdef CONFIG_WIFI_DISPLAY 90261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (p2p->wfd_ie_go_neg) 90361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpabuf_put_buf(buf, p2p->wfd_ie_go_neg); 90461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt#endif /* CONFIG_WIFI_DISPLAY */ 90561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 9062e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_CONF]) 9072e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt wpabuf_put_buf(buf, p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_CONF]); 9082e67f06149ff649fb6f8782bad041d3d9124685eDmitry Shmidt 9098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return buf; 9108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 9118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa, 9148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t len, int rx_freq) 9158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 9168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev; 9178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int go = -1; 9188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_message msg; 9198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 status = P2P_SC_SUCCESS; 9208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int freq; 9218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 922b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Received GO Negotiation Response from " MACSTR 9238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " (freq=%d)", MAC2STR(sa), rx_freq); 9248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_get_device(p2p, sa); 9258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev == NULL || dev->wps_method == WPS_NOT_READY || 9268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev != p2p->go_neg_peer) { 927b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Not ready for GO negotiation with " MACSTR, 9288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 9298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 9308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_parse(data, len, &msg)) 9338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 9348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE)) { 936b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Was not expecting GO Negotiation Response - ignore"); 9378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 9388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 9398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 9418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.dialog_token != dev->dialog_token) { 943b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unexpected Dialog Token %u (expected %u)", 9448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dialog_token, dev->dialog_token); 9458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 9468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 9478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.status) { 950b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Status attribute received"); 9518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*msg.status) { 955b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "GO Negotiation rejected: status %d", *msg.status); 9568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_neg_req_sent = 0; 9578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*msg.status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 958b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Wait for the peer to become ready for GO Negotiation"); 9598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags |= P2P_DEV_NOT_YET_READY; 9606dc03bd757d3befd2c03a543a402338db03914d6Dmitry Shmidt os_get_reltime(&dev->go_neg_wait_started); 961661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt if (p2p->state == P2P_CONNECT_LISTEN) 962661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT); 963661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt else 964661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt p2p_set_state(p2p, P2P_WAIT_PEER_IDLE); 9658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_timeout(p2p, 0, 0); 9668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 967b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Stop GO Negotiation attempt"); 9688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_go_neg_failed(p2p, dev, *msg.status); 9698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 9718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 9728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 9738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.capability) { 976b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory Capability attribute missing from GO Negotiation Response"); 9778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 9788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 9818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.p2p_device_info) { 984b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory P2P Device Info attribute missing from GO Negotiation Response"); 9858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 9868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 9898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.intended_addr) { 992b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Intended P2P Interface Address attribute received"); 9938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 9948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 9958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.go_intent) { 998b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No GO Intent attribute received"); 9998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 10008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((*msg.go_intent >> 1) > P2P_MAX_GO_INTENT) { 1003b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Invalid GO Intent value (%u) received", 10048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *msg.go_intent >> 1); 10058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 10068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt go = p2p_go_det(p2p->go_intent, *msg.go_intent); 10108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (go < 0) { 1011b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Incompatible GO Intent"); 10128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 10138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!go && msg.group_id) { 10178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Store SSID for Provisioning step */ 10188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = msg.group_id_len - ETH_ALEN; 10198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(p2p->ssid, msg.group_id + ETH_ALEN, p2p->ssid_len); 10208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (!go) { 1021b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory P2P Group ID attribute missing from GO Negotiation Response"); 10228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = 0; 10238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 10248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.config_timeout) { 1028b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory Configuration Timeout attribute missing from GO Negotiation Response"); 10298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 10308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 10318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 10338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 10348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_timeout = msg.config_timeout[0]; 10358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->client_timeout = msg.config_timeout[1]; 10368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.operating_channel && !go) { 10398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 10408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Note: P2P Client may omit Operating Channel attribute to 10418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * indicate it does not have a preference. 10428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 1043b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Operating Channel attribute received"); 10448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 10458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.channel_list) { 1048b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Channel List attribute received"); 10498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INVALID_PARAMS; 10508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_peer_channels(p2p, dev, msg.channel_list, 10548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.channel_list_len) < 0) { 1055b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No common channels found"); 10568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_NO_COMMON_CHANNELS; 10578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.operating_channel) { 10614b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt dev->oper_freq = p2p_channel_to_freq(msg.operating_channel[3], 10628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.operating_channel[4]); 1063b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Peer operating channel preference: %d MHz", 1064b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt dev->oper_freq); 10658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 10668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->oper_freq = 0; 10678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (msg.dev_password_id) { 10698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_REGISTRAR_SPECIFIED: 1070b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "PIN from peer Display"); 10718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PIN_KEYPAD) { 1072b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "We have wps_method=%s -> incompatible", 10738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 10748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 10758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 10788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_USER_SPECIFIED: 1079b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Peer entered PIN on Keypad"); 10801f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (dev->wps_method != WPS_PIN_DISPLAY) { 1081b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "We have wps_method=%s -> incompatible", 10828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 10838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 10848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 10878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case DEV_PW_PUSHBUTTON: 1088b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Peer using pushbutton"); 10898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->wps_method != WPS_PBC) { 1090b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "We have wps_method=%s -> incompatible", 10918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_wps_method_str(dev->wps_method)); 10928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 10938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 10948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 10968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 1097cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (msg.dev_password_id && 1098cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt msg.dev_password_id == dev->oob_pw_id) { 1099cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt p2p_dbg(p2p, "Peer using NFC"); 1100cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (dev->wps_method != WPS_NFC) { 1101cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt p2p_dbg(p2p, "We have wps_method=%s -> incompatible", 1102cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt p2p_wps_method_str(dev->wps_method)); 1103cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 1104cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt goto fail; 1105cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } 1106cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt break; 1107cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } 1108b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unsupported Device Password ID %d", 11098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dev_password_id); 11108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD; 11118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto fail; 11128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1114a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (go && p2p_go_select_channel(p2p, dev, &status) < 0) 1115a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt goto fail; 11168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_set_state(p2p, P2P_GO_NEG); 11188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_clear_timeout(p2p); 11198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1120b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "GO Negotiation with " MACSTR, MAC2STR(sa)); 11218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(dev->intended_addr, msg.intended_addr, ETH_ALEN); 11228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtfail: 1124413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt /* Store GO Negotiation Confirmation to allow retransmission */ 1125413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt wpabuf_free(dev->go_neg_conf); 1126413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt dev->go_neg_conf = p2p_build_go_neg_conf(p2p, dev, msg.dialog_token, 1127413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt status, msg.operating_channel, 1128413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt go); 11298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 1130413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt if (dev->go_neg_conf == NULL) 11318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 1132b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Sending GO Negotiation Confirm"); 11338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (status == P2P_SC_SUCCESS) { 11348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM; 11358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->go_state = go ? LOCAL_GO : REMOTE_GO; 11368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 11378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_NO_PENDING_ACTION; 11388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rx_freq > 0) 11398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = rx_freq; 11408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 11418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt freq = dev->listen_freq; 1142413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt 1143413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt dev->go_neg_conf_freq = freq; 1144413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt dev->go_neg_conf_sent = 0; 1145413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt 11468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_send_action(p2p, freq, sa, p2p->cfg->dev_addr, sa, 1147413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt wpabuf_head(dev->go_neg_conf), 1148413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt wpabuf_len(dev->go_neg_conf), 200) < 0) { 1149b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Failed to send Action frame"); 11508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_go_neg_failed(p2p, dev, -1); 1151fb79edc9df1f20461e90e478363d207348213d35Dmitry Shmidt p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 1152413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt } else 1153413dde71f7bc166de54229f337c24b61f4d909fdDmitry Shmidt dev->go_neg_conf_sent++; 11549cdf1b905fae57dea42506a1af67f6ece544b261Dmitry Shmidt if (status != P2P_SC_SUCCESS) { 1155b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "GO Negotiation failed"); 11569cdf1b905fae57dea42506a1af67f6ece544b261Dmitry Shmidt p2p_go_neg_failed(p2p, dev, status); 11579cdf1b905fae57dea42506a1af67f6ece544b261Dmitry Shmidt } 11588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 11598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa, 11628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t len) 11638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 11648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_device *dev; 11658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct p2p_message msg; 11668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1167b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Received GO Negotiation Confirm from " MACSTR, 11688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 11698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev = p2p_get_device(p2p, sa); 11708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev == NULL || dev->wps_method == WPS_NOT_READY || 11718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev != p2p->go_neg_peer) { 1172b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Not ready for GO negotiation with " MACSTR, 11738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sa)); 11748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p->pending_action_state == P2P_PENDING_GO_NEG_RESPONSE) { 1178b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Stopped waiting for TX status on GO Negotiation Response since we already received Confirmation"); 11798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->pending_action_state = P2P_NO_PENDING_ACTION; 11808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (p2p_parse(data, len, &msg)) 11838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 1186b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Was not expecting GO Negotiation Confirm - ignore"); 11879767226d8e6a1adaa33beb9f517ef40dddfa460cDmitry Shmidt p2p_parse_free(&msg); 11888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 1191344abd362cfe2d03ed956666527352826b67bde5Dmitry Shmidt p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 11928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg.dialog_token != dev->dialog_token) { 1194b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unexpected Dialog Token %u (expected %u)", 11958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg.dialog_token, dev->dialog_token); 11968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 11978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 11988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.status) { 1201b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "No Status attribute received"); 12028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 12038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 12048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*msg.status) { 1206b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "GO Negotiation rejected: status %d", *msg.status); 12079cdf1b905fae57dea42506a1af67f6ece544b261Dmitry Shmidt p2p_go_neg_failed(p2p, dev, *msg.status); 12088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 12098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 12108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->go_state == REMOTE_GO && msg.group_id) { 12138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Store SSID for Provisioning step */ 12148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = msg.group_id_len - ETH_ALEN; 12158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(p2p->ssid, msg.group_id + ETH_ALEN, p2p->ssid_len); 12168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (dev->go_state == REMOTE_GO) { 1217b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory P2P Group ID attribute missing from GO Negotiation Confirmation"); 12188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p->ssid_len = 0; 12199cdf1b905fae57dea42506a1af67f6ece544b261Dmitry Shmidt p2p_go_neg_failed(p2p, dev, P2P_SC_FAIL_INVALID_PARAMS); 12208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 12218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 12228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.operating_channel) { 1225b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory Operating Channel attribute missing from GO Negotiation Confirmation"); 12268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 12278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 12288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 12298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 1230b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt } else if (dev->go_state == REMOTE_GO) { 1231b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt int oper_freq = p2p_channel_to_freq(msg.operating_channel[3], 1232b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt msg.operating_channel[4]); 1233b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt if (oper_freq != dev->oper_freq) { 1234b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt p2p_dbg(p2p, "Updated peer (GO) operating channel preference from %d MHz to %d MHz", 1235b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt dev->oper_freq, oper_freq); 1236b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt dev->oper_freq = oper_freq; 1237b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt } 12388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!msg.channel_list) { 1241b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Mandatory Operating Channel attribute missing from GO Negotiation Confirmation"); 12428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_P2P_STRICT 12438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 12448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 12458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_P2P_STRICT */ 12468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_parse_free(&msg); 12498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (dev->go_state == UNKNOWN_GO) { 12518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 12528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * This should not happen since GO negotiation has already 12538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * been completed. 12548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 1255b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "Unexpected GO Neg state - do not know which end becomes GO"); 12568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 12578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12592c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen /* 12602c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * The peer could have missed our ctrl::ack frame for GO Negotiation 12612c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * Confirm and continue retransmitting the frame. To reduce the 12622c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * likelihood of the peer not getting successful TX status for the 12632c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * GO Negotiation Confirm frame, wait a short time here before starting 12642c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * the group so that we will remain on the current channel to 12652c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen * acknowledge any possible retransmission from the peer. 12662c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen */ 1267b6e9aaf735990dc64cdb6efccc03d076768eabf3Dmitry Shmidt p2p_dbg(p2p, "20 ms wait on current channel before starting group"); 12682c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen os_sleep(0, 20000); 12692c5b17df4c29abdf11a85216c2f6272af796c576Jouni Malinen 12708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt p2p_go_complete(p2p, dev); 12718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1272