2010-07-18 17:30:25 -04:00
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/*
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* Wi-Fi Direct - P2P Group Owner Negotiation
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* Copyright (c) 2009-2010, Atheros Communications
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*
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2012-02-11 09:31:36 -05:00
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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2010-07-18 17:30:25 -04:00
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*/
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#include "includes.h"
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#include "common.h"
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2014-10-28 07:26:43 -04:00
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#include "utils/eloop.h"
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2010-07-18 17:30:25 -04:00
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#include "common/ieee802_11_defs.h"
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2014-07-04 11:23:43 -04:00
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#include "common/wpa_ctrl.h"
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2010-07-18 17:30:25 -04:00
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#include "wps/wps_defs.h"
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#include "p2p_i.h"
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#include "p2p.h"
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static int p2p_go_det(u8 own_intent, u8 peer_value)
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{
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u8 peer_intent = peer_value >> 1;
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if (own_intent == peer_intent) {
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if (own_intent == P2P_MAX_GO_INTENT)
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return -1; /* both devices want to become GO */
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/* Use tie breaker bit to determine GO */
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return (peer_value & 0x01) ? 0 : 1;
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}
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return own_intent > peer_intent;
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}
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int p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own,
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struct p2p_device *dev,
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const u8 *channel_list, size_t channel_list_len)
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{
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const u8 *pos, *end;
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struct p2p_channels *ch;
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2015-10-17 18:45:22 -04:00
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u8 channels;
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2010-07-18 17:30:25 -04:00
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struct p2p_channels intersection;
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ch = &dev->channels;
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os_memset(ch, 0, sizeof(*ch));
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pos = channel_list;
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end = channel_list + channel_list_len;
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if (end - pos < 3)
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return -1;
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os_memcpy(dev->country, pos, 3);
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wpa_hexdump_ascii(MSG_DEBUG, "P2P: Peer country", pos, 3);
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2010-06-28 17:32:17 -04:00
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if (pos[2] != 0x04 && os_memcmp(pos, p2p->cfg->country, 2) != 0) {
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2013-05-18 11:47:36 -04:00
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p2p_info(p2p, "Mismatching country (ours=%c%c peer's=%c%c)",
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2010-07-18 17:30:25 -04:00
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p2p->cfg->country[0], p2p->cfg->country[1],
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pos[0], pos[1]);
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return -1;
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}
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pos += 3;
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2015-10-17 18:45:22 -04:00
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while (end - pos > 2) {
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2010-07-18 17:30:25 -04:00
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struct p2p_reg_class *cl = &ch->reg_class[ch->reg_classes];
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cl->reg_class = *pos++;
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2015-10-17 18:45:22 -04:00
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channels = *pos++;
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if (channels > end - pos) {
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2013-05-18 11:47:36 -04:00
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p2p_info(p2p, "Invalid peer Channel List");
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2010-07-18 17:30:25 -04:00
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return -1;
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}
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cl->channels = channels > P2P_MAX_REG_CLASS_CHANNELS ?
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P2P_MAX_REG_CLASS_CHANNELS : channels;
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os_memcpy(cl->channel, pos, cl->channels);
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pos += channels;
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ch->reg_classes++;
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if (ch->reg_classes == P2P_MAX_REG_CLASSES)
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break;
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}
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p2p_channels_intersect(own, &dev->channels, &intersection);
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2013-05-18 11:47:36 -04:00
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p2p_dbg(p2p, "Own reg_classes %d peer reg_classes %d intersection reg_classes %d",
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2010-07-18 17:30:25 -04:00
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(int) own->reg_classes,
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(int) dev->channels.reg_classes,
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(int) intersection.reg_classes);
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if (intersection.reg_classes == 0) {
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2013-05-18 11:47:36 -04:00
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p2p_info(p2p, "No common channels found");
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2010-07-18 17:30:25 -04:00
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return -1;
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}
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return 0;
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}
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static int p2p_peer_channels(struct p2p_data *p2p, struct p2p_device *dev,
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const u8 *channel_list, size_t channel_list_len)
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{
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return p2p_peer_channels_check(p2p, &p2p->channels, dev,
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channel_list, channel_list_len);
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}
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2012-02-27 16:14:35 -05:00
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u16 p2p_wps_method_pw_id(enum p2p_wps_method wps_method)
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2010-07-18 17:30:25 -04:00
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{
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switch (wps_method) {
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case WPS_PIN_DISPLAY:
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return DEV_PW_REGISTRAR_SPECIFIED;
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case WPS_PIN_KEYPAD:
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return DEV_PW_USER_SPECIFIED;
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case WPS_PBC:
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return DEV_PW_PUSHBUTTON;
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2013-02-15 10:07:28 -05:00
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case WPS_NFC:
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return DEV_PW_NFC_CONNECTION_HANDOVER;
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2014-09-11 11:27:44 -04:00
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case WPS_P2PS:
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return DEV_PW_P2PS_DEFAULT;
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2010-07-18 17:30:25 -04:00
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default:
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return DEV_PW_DEFAULT;
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}
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}
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static const char * p2p_wps_method_str(enum p2p_wps_method wps_method)
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{
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switch (wps_method) {
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case WPS_PIN_DISPLAY:
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return "Display";
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case WPS_PIN_KEYPAD:
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return "Keypad";
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case WPS_PBC:
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return "PBC";
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2013-02-15 10:07:28 -05:00
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case WPS_NFC:
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return "NFC";
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2014-09-11 11:27:44 -04:00
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case WPS_P2PS:
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return "P2PS";
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2010-07-18 17:30:25 -04:00
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default:
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return "??";
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}
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}
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static struct wpabuf * p2p_build_go_neg_req(struct p2p_data *p2p,
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struct p2p_device *peer)
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{
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struct wpabuf *buf;
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u8 *len;
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u8 group_capab;
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2012-03-02 10:26:01 -05:00
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size_t extra = 0;
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2013-02-15 10:07:28 -05:00
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u16 pw_id;
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2010-07-18 17:30:25 -04:00
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2012-03-02 10:26:01 -05:00
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#ifdef CONFIG_WIFI_DISPLAY
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if (p2p->wfd_ie_go_neg)
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extra = wpabuf_len(p2p->wfd_ie_go_neg);
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#endif /* CONFIG_WIFI_DISPLAY */
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2014-07-04 11:23:43 -04:00
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if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_REQ])
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extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_REQ]);
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2012-03-02 10:26:01 -05:00
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buf = wpabuf_alloc(1000 + extra);
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2010-07-18 17:30:25 -04:00
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if (buf == NULL)
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return NULL;
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p2p_buf_add_public_action_hdr(buf, P2P_GO_NEG_REQ, peer->dialog_token);
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len = p2p_buf_add_ie_hdr(buf);
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group_capab = 0;
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2011-10-24 10:29:37 -04:00
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if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
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2010-07-18 17:30:25 -04:00
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group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP;
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2011-10-24 10:29:37 -04:00
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if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
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group_capab |= P2P_GROUP_CAPAB_PERSISTENT_RECONN;
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}
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2010-07-10 13:19:34 -04:00
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if (p2p->cross_connect)
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group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
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2010-09-08 14:18:10 -04:00
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if (p2p->cfg->p2p_intra_bss)
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group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST;
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2012-06-16 12:54:47 -04:00
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p2p_buf_add_capability(buf, p2p->dev_capab &
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~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY,
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group_capab);
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2013-02-26 09:56:48 -05:00
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p2p_buf_add_go_intent(buf, (p2p->go_intent << 1) | peer->tie_breaker);
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2012-08-15 16:19:11 -04:00
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p2p_buf_add_config_timeout(buf, p2p->go_timeout, p2p->client_timeout);
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2010-07-18 17:30:25 -04:00
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p2p_buf_add_listen_channel(buf, p2p->cfg->country, p2p->cfg->reg_class,
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p2p->cfg->channel);
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if (p2p->ext_listen_interval)
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p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
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p2p->ext_listen_interval);
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p2p_buf_add_intended_addr(buf, p2p->intended_addr);
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p2p_buf_add_channel_list(buf, p2p->cfg->country, &p2p->channels);
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p2p_buf_add_device_info(buf, p2p, peer);
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p2p_buf_add_operating_channel(buf, p2p->cfg->country,
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p2p->op_reg_class, p2p->op_channel);
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p2p_buf_update_ie_hdr(buf, len);
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2015-07-23 20:39:45 -04:00
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p2p_buf_add_pref_channel_list(buf, p2p->pref_freq_list,
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p2p->num_pref_freq);
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2010-07-18 17:30:25 -04:00
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/* WPS IE with Device Password ID attribute */
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2013-02-15 10:07:28 -05:00
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pw_id = p2p_wps_method_pw_id(peer->wps_method);
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if (peer->oob_pw_id)
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pw_id = peer->oob_pw_id;
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if (p2p_build_wps_ie(p2p, buf, pw_id, 0) < 0) {
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2013-10-26 05:54:20 -04:00
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p2p_dbg(p2p, "Failed to build WPS IE for GO Negotiation Request");
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wpabuf_free(buf);
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return NULL;
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}
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2010-07-18 17:30:25 -04:00
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2012-03-02 10:26:01 -05:00
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#ifdef CONFIG_WIFI_DISPLAY
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if (p2p->wfd_ie_go_neg)
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wpabuf_put_buf(buf, p2p->wfd_ie_go_neg);
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#endif /* CONFIG_WIFI_DISPLAY */
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2014-07-04 11:23:43 -04:00
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if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_REQ])
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wpabuf_put_buf(buf, p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_REQ]);
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2010-07-18 17:30:25 -04:00
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return buf;
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}
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int p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev)
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{
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struct wpabuf *req;
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int freq;
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2012-05-11 09:25:47 -04:00
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if (dev->flags & P2P_DEV_PD_BEFORE_GO_NEG) {
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u16 config_method;
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2013-05-18 11:47:36 -04:00
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p2p_dbg(p2p, "Use PD-before-GO-Neg workaround for " MACSTR,
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2012-05-11 09:25:47 -04:00
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MAC2STR(dev->info.p2p_device_addr));
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if (dev->wps_method == WPS_PIN_DISPLAY)
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config_method = WPS_CONFIG_KEYPAD;
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else if (dev->wps_method == WPS_PIN_KEYPAD)
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config_method = WPS_CONFIG_DISPLAY;
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else if (dev->wps_method == WPS_PBC)
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config_method = WPS_CONFIG_PUSHBUTTON;
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2014-09-11 11:27:44 -04:00
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else if (dev->wps_method == WPS_P2PS)
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config_method = WPS_CONFIG_P2PS;
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2012-05-11 09:25:47 -04:00
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else
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return -1;
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return p2p_prov_disc_req(p2p, dev->info.p2p_device_addr,
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2014-12-10 03:38:56 -05:00
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NULL, config_method, 0, 0, 1);
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2012-05-11 09:25:47 -04:00
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}
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2010-07-18 17:30:25 -04:00
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freq = dev->listen_freq > 0 ? dev->listen_freq : dev->oper_freq;
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2013-04-27 11:50:14 -04:00
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if (dev->oob_go_neg_freq > 0)
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freq = dev->oob_go_neg_freq;
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2010-07-18 17:30:25 -04:00
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if (freq <= 0) {
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2013-05-18 11:47:36 -04:00
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p2p_dbg(p2p, "No Listen/Operating frequency known for the peer "
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MACSTR " to send GO Negotiation Request",
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2011-02-24 14:51:17 -05:00
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MAC2STR(dev->info.p2p_device_addr));
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2010-07-18 17:30:25 -04:00
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return -1;
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}
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req = p2p_build_go_neg_req(p2p, dev);
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if (req == NULL)
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return -1;
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2013-05-18 11:47:36 -04:00
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p2p_dbg(p2p, "Sending GO Negotiation Request");
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2010-07-18 17:30:25 -04:00
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p2p_set_state(p2p, P2P_CONNECT);
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p2p->pending_action_state = P2P_PENDING_GO_NEG_REQUEST;
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p2p->go_neg_peer = dev;
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2014-10-28 07:26:43 -04:00
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eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
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2010-07-18 17:30:25 -04:00
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dev->flags |= P2P_DEV_WAIT_GO_NEG_RESPONSE;
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2010-12-28 04:48:58 -05:00
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dev->connect_reqs++;
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2011-02-24 14:51:17 -05:00
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if (p2p_send_action(p2p, freq, dev->info.p2p_device_addr,
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p2p->cfg->dev_addr, dev->info.p2p_device_addr,
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2013-02-28 15:15:46 -05:00
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wpabuf_head(req), wpabuf_len(req), 500) < 0) {
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2013-05-18 11:47:36 -04:00
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p2p_dbg(p2p, "Failed to send Action frame");
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2010-07-18 17:30:25 -04:00
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/* Use P2P find to recover and retry */
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p2p_set_timeout(p2p, 0, 0);
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2012-06-09 11:03:47 -04:00
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} else
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dev->go_neg_req_sent++;
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2010-07-18 17:30:25 -04:00
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wpabuf_free(req);
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return 0;
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}
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static struct wpabuf * p2p_build_go_neg_resp(struct p2p_data *p2p,
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struct p2p_device *peer,
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u8 dialog_token, u8 status,
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u8 tie_breaker)
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{
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struct wpabuf *buf;
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u8 *len;
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u8 group_capab;
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2012-03-02 10:26:01 -05:00
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size_t extra = 0;
|
2013-02-15 10:07:28 -05:00
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u16 pw_id;
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2010-07-18 17:30:25 -04:00
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2013-05-18 11:47:36 -04:00
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p2p_dbg(p2p, "Building GO Negotiation Response");
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2012-03-02 10:26:01 -05:00
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|
|
|
#ifdef CONFIG_WIFI_DISPLAY
|
|
|
|
if (p2p->wfd_ie_go_neg)
|
|
|
|
extra = wpabuf_len(p2p->wfd_ie_go_neg);
|
|
|
|
#endif /* CONFIG_WIFI_DISPLAY */
|
|
|
|
|
2014-07-04 11:23:43 -04:00
|
|
|
if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_RESP])
|
|
|
|
extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_RESP]);
|
|
|
|
|
2012-03-02 10:26:01 -05:00
|
|
|
buf = wpabuf_alloc(1000 + extra);
|
2010-07-18 17:30:25 -04:00
|
|
|
if (buf == NULL)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
p2p_buf_add_public_action_hdr(buf, P2P_GO_NEG_RESP, dialog_token);
|
|
|
|
|
|
|
|
len = p2p_buf_add_ie_hdr(buf);
|
|
|
|
p2p_buf_add_status(buf, status);
|
|
|
|
group_capab = 0;
|
2010-07-10 13:19:34 -04:00
|
|
|
if (peer && peer->go_state == LOCAL_GO) {
|
2011-10-24 10:29:37 -04:00
|
|
|
if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
|
2010-07-10 13:19:34 -04:00
|
|
|
group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP;
|
2011-10-24 10:29:37 -04:00
|
|
|
if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
|
|
|
|
group_capab |=
|
|
|
|
P2P_GROUP_CAPAB_PERSISTENT_RECONN;
|
|
|
|
}
|
2010-07-10 13:19:34 -04:00
|
|
|
if (p2p->cross_connect)
|
|
|
|
group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
|
2010-09-08 14:18:10 -04:00
|
|
|
if (p2p->cfg->p2p_intra_bss)
|
|
|
|
group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST;
|
2010-07-10 13:19:34 -04:00
|
|
|
}
|
2012-06-16 12:54:47 -04:00
|
|
|
p2p_buf_add_capability(buf, p2p->dev_capab &
|
|
|
|
~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY,
|
|
|
|
group_capab);
|
2010-07-18 17:30:25 -04:00
|
|
|
p2p_buf_add_go_intent(buf, (p2p->go_intent << 1) | tie_breaker);
|
2012-08-15 16:19:11 -04:00
|
|
|
p2p_buf_add_config_timeout(buf, p2p->go_timeout, p2p->client_timeout);
|
2015-07-24 04:56:48 -04:00
|
|
|
if (peer && peer->go_state == REMOTE_GO && !p2p->num_pref_freq) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Omit Operating Channel attribute");
|
2010-07-18 17:30:25 -04:00
|
|
|
} else {
|
|
|
|
p2p_buf_add_operating_channel(buf, p2p->cfg->country,
|
|
|
|
p2p->op_reg_class,
|
|
|
|
p2p->op_channel);
|
|
|
|
}
|
|
|
|
p2p_buf_add_intended_addr(buf, p2p->intended_addr);
|
|
|
|
if (status || peer == NULL) {
|
|
|
|
p2p_buf_add_channel_list(buf, p2p->cfg->country,
|
|
|
|
&p2p->channels);
|
|
|
|
} else if (peer->go_state == REMOTE_GO) {
|
|
|
|
p2p_buf_add_channel_list(buf, p2p->cfg->country,
|
|
|
|
&p2p->channels);
|
|
|
|
} else {
|
|
|
|
struct p2p_channels res;
|
|
|
|
p2p_channels_intersect(&p2p->channels, &peer->channels,
|
|
|
|
&res);
|
|
|
|
p2p_buf_add_channel_list(buf, p2p->cfg->country, &res);
|
|
|
|
}
|
|
|
|
p2p_buf_add_device_info(buf, p2p, peer);
|
|
|
|
if (peer && peer->go_state == LOCAL_GO) {
|
|
|
|
p2p_buf_add_group_id(buf, p2p->cfg->dev_addr, p2p->ssid,
|
|
|
|
p2p->ssid_len);
|
|
|
|
}
|
|
|
|
p2p_buf_update_ie_hdr(buf, len);
|
|
|
|
|
|
|
|
/* WPS IE with Device Password ID attribute */
|
2013-02-15 10:07:28 -05:00
|
|
|
pw_id = p2p_wps_method_pw_id(peer ? peer->wps_method : WPS_NOT_READY);
|
|
|
|
if (peer && peer->oob_pw_id)
|
|
|
|
pw_id = peer->oob_pw_id;
|
|
|
|
if (p2p_build_wps_ie(p2p, buf, pw_id, 0) < 0) {
|
2013-10-26 05:54:20 -04:00
|
|
|
p2p_dbg(p2p, "Failed to build WPS IE for GO Negotiation Response");
|
|
|
|
wpabuf_free(buf);
|
|
|
|
return NULL;
|
|
|
|
}
|
2010-07-18 17:30:25 -04:00
|
|
|
|
2012-03-02 10:26:01 -05:00
|
|
|
#ifdef CONFIG_WIFI_DISPLAY
|
|
|
|
if (p2p->wfd_ie_go_neg)
|
|
|
|
wpabuf_put_buf(buf, p2p->wfd_ie_go_neg);
|
|
|
|
#endif /* CONFIG_WIFI_DISPLAY */
|
|
|
|
|
2014-07-04 11:23:43 -04:00
|
|
|
if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_RESP])
|
|
|
|
wpabuf_put_buf(buf, p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_RESP]);
|
2012-03-02 10:26:01 -05:00
|
|
|
|
2010-07-18 17:30:25 -04:00
|
|
|
return buf;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2012-12-27 01:27:11 -05:00
|
|
|
/**
|
|
|
|
* p2p_reselect_channel - Re-select operating channel based on peer information
|
|
|
|
* @p2p: P2P module context from p2p_init()
|
|
|
|
* @intersection: Support channel list intersection from local and peer
|
|
|
|
*
|
|
|
|
* This function is used to re-select the best channel after having received
|
|
|
|
* information from the peer to allow supported channel lists to be intersected.
|
|
|
|
* This can be used to improve initial channel selection done in
|
|
|
|
* p2p_prepare_channel() prior to the start of GO Negotiation. In addition, this
|
|
|
|
* can be used for Invitation case.
|
|
|
|
*/
|
2012-09-24 15:15:58 -04:00
|
|
|
void p2p_reselect_channel(struct p2p_data *p2p,
|
|
|
|
struct p2p_channels *intersection)
|
2010-11-10 06:34:33 -05:00
|
|
|
{
|
|
|
|
struct p2p_reg_class *cl;
|
|
|
|
int freq;
|
|
|
|
u8 op_reg_class, op_channel;
|
2012-03-29 14:28:34 -04:00
|
|
|
unsigned int i;
|
2015-04-02 12:22:58 -04:00
|
|
|
const int op_classes_5ghz[] = { 124, 125, 115, 0 };
|
2013-11-19 06:04:21 -05:00
|
|
|
const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
|
2013-11-18 10:46:14 -05:00
|
|
|
const int op_classes_vht[] = { 128, 0 };
|
2010-11-10 06:34:33 -05:00
|
|
|
|
2013-03-14 10:22:31 -04:00
|
|
|
if (p2p->own_freq_preference > 0 &&
|
2013-04-27 14:03:16 -04:00
|
|
|
p2p_freq_to_channel(p2p->own_freq_preference,
|
2013-03-14 10:22:31 -04:00
|
|
|
&op_reg_class, &op_channel) == 0 &&
|
|
|
|
p2p_channels_includes(intersection, op_reg_class, op_channel)) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Pick own channel preference (reg_class %u channel %u) from intersection",
|
|
|
|
op_reg_class, op_channel);
|
2013-03-14 10:22:31 -04:00
|
|
|
p2p->op_reg_class = op_reg_class;
|
|
|
|
p2p->op_channel = op_channel;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2013-03-14 10:05:47 -04:00
|
|
|
if (p2p->best_freq_overall > 0 &&
|
2013-04-27 14:03:16 -04:00
|
|
|
p2p_freq_to_channel(p2p->best_freq_overall,
|
2013-03-14 10:05:47 -04:00
|
|
|
&op_reg_class, &op_channel) == 0 &&
|
|
|
|
p2p_channels_includes(intersection, op_reg_class, op_channel)) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Pick best overall channel (reg_class %u channel %u) from intersection",
|
2013-03-14 10:05:47 -04:00
|
|
|
op_reg_class, op_channel);
|
|
|
|
p2p->op_reg_class = op_reg_class;
|
|
|
|
p2p->op_channel = op_channel;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2010-11-10 06:34:33 -05:00
|
|
|
/* First, try to pick the best channel from another band */
|
2013-04-27 14:03:16 -04:00
|
|
|
freq = p2p_channel_to_freq(p2p->op_reg_class, p2p->op_channel);
|
2010-11-10 06:34:33 -05:00
|
|
|
if (freq >= 2400 && freq < 2500 && p2p->best_freq_5 > 0 &&
|
2013-03-14 10:05:47 -04:00
|
|
|
!p2p_channels_includes(intersection, p2p->op_reg_class,
|
|
|
|
p2p->op_channel) &&
|
2013-04-27 14:03:16 -04:00
|
|
|
p2p_freq_to_channel(p2p->best_freq_5,
|
2010-11-10 06:34:33 -05:00
|
|
|
&op_reg_class, &op_channel) == 0 &&
|
|
|
|
p2p_channels_includes(intersection, op_reg_class, op_channel)) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Pick best 5 GHz channel (reg_class %u channel %u) from intersection",
|
2010-11-10 06:34:33 -05:00
|
|
|
op_reg_class, op_channel);
|
|
|
|
p2p->op_reg_class = op_reg_class;
|
|
|
|
p2p->op_channel = op_channel;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (freq >= 4900 && freq < 6000 && p2p->best_freq_24 > 0 &&
|
2013-03-14 10:05:47 -04:00
|
|
|
!p2p_channels_includes(intersection, p2p->op_reg_class,
|
|
|
|
p2p->op_channel) &&
|
2013-04-27 14:03:16 -04:00
|
|
|
p2p_freq_to_channel(p2p->best_freq_24,
|
2010-11-10 06:34:33 -05:00
|
|
|
&op_reg_class, &op_channel) == 0 &&
|
|
|
|
p2p_channels_includes(intersection, op_reg_class, op_channel)) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Pick best 2.4 GHz channel (reg_class %u channel %u) from intersection",
|
2010-11-10 06:34:33 -05:00
|
|
|
op_reg_class, op_channel);
|
|
|
|
p2p->op_reg_class = op_reg_class;
|
|
|
|
p2p->op_channel = op_channel;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2012-03-29 14:28:34 -04:00
|
|
|
/* Select channel with highest preference if the peer supports it */
|
|
|
|
for (i = 0; p2p->cfg->pref_chan && i < p2p->cfg->num_pref_chan; i++) {
|
|
|
|
if (p2p_channels_includes(intersection,
|
|
|
|
p2p->cfg->pref_chan[i].op_class,
|
|
|
|
p2p->cfg->pref_chan[i].chan)) {
|
|
|
|
p2p->op_reg_class = p2p->cfg->pref_chan[i].op_class;
|
|
|
|
p2p->op_channel = p2p->cfg->pref_chan[i].chan;
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Pick highest preferred channel (op_class %u channel %u) from intersection",
|
2012-03-29 14:28:34 -04:00
|
|
|
p2p->op_reg_class, p2p->op_channel);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-10-27 14:08:36 -04:00
|
|
|
/* Try a channel where we might be able to use VHT */
|
2013-11-18 10:46:14 -05:00
|
|
|
if (p2p_channel_select(intersection, op_classes_vht,
|
|
|
|
&p2p->op_reg_class, &p2p->op_channel) == 0) {
|
|
|
|
p2p_dbg(p2p, "Pick possible VHT channel (op_class %u channel %u) from intersection",
|
|
|
|
p2p->op_reg_class, p2p->op_channel);
|
|
|
|
return;
|
2013-10-27 14:08:36 -04:00
|
|
|
}
|
|
|
|
|
2012-12-25 12:59:04 -05:00
|
|
|
/* Try a channel where we might be able to use HT40 */
|
2013-11-18 10:44:28 -05:00
|
|
|
if (p2p_channel_select(intersection, op_classes_ht40,
|
|
|
|
&p2p->op_reg_class, &p2p->op_channel) == 0) {
|
|
|
|
p2p_dbg(p2p, "Pick possible HT40 channel (op_class %u channel %u) from intersection",
|
|
|
|
p2p->op_reg_class, p2p->op_channel);
|
|
|
|
return;
|
2012-12-25 12:59:04 -05:00
|
|
|
}
|
|
|
|
|
2013-09-14 21:09:48 -04:00
|
|
|
/* Prefer a 5 GHz channel */
|
2013-11-18 10:41:39 -05:00
|
|
|
if (p2p_channel_select(intersection, op_classes_5ghz,
|
|
|
|
&p2p->op_reg_class, &p2p->op_channel) == 0) {
|
|
|
|
p2p_dbg(p2p, "Pick possible 5 GHz channel (op_class %u channel %u) from intersection",
|
|
|
|
p2p->op_reg_class, p2p->op_channel);
|
|
|
|
return;
|
2013-09-14 21:09:48 -04:00
|
|
|
}
|
|
|
|
|
2012-12-27 01:16:42 -05:00
|
|
|
/*
|
|
|
|
* Try to see if the original channel is in the intersection. If
|
|
|
|
* so, no need to change anything, as it already contains some
|
|
|
|
* randomness.
|
|
|
|
*/
|
|
|
|
if (p2p_channels_includes(intersection, p2p->op_reg_class,
|
|
|
|
p2p->op_channel)) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Using original operating class and channel (op_class %u channel %u) from intersection",
|
2012-12-27 01:16:42 -05:00
|
|
|
p2p->op_reg_class, p2p->op_channel);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2010-11-10 06:34:33 -05:00
|
|
|
/*
|
|
|
|
* Fall back to whatever is included in the channel intersection since
|
|
|
|
* no better options seems to be available.
|
|
|
|
*/
|
|
|
|
cl = &intersection->reg_class[0];
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Pick another channel (reg_class %u channel %u) from intersection",
|
2010-11-10 06:34:33 -05:00
|
|
|
cl->reg_class, cl->channel[0]);
|
|
|
|
p2p->op_reg_class = cl->reg_class;
|
|
|
|
p2p->op_channel = cl->channel[0];
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2014-12-10 03:38:56 -05:00
|
|
|
int p2p_go_select_channel(struct p2p_data *p2p, struct p2p_device *dev,
|
|
|
|
u8 *status)
|
2012-12-27 00:39:57 -05:00
|
|
|
{
|
2013-10-22 14:00:49 -04:00
|
|
|
struct p2p_channels tmp, intersection;
|
2012-12-27 00:39:57 -05:00
|
|
|
|
2013-10-22 11:44:05 -04:00
|
|
|
p2p_channels_dump(p2p, "own channels", &p2p->channels);
|
|
|
|
p2p_channels_dump(p2p, "peer channels", &dev->channels);
|
2013-10-22 14:00:49 -04:00
|
|
|
p2p_channels_intersect(&p2p->channels, &dev->channels, &tmp);
|
|
|
|
p2p_channels_dump(p2p, "intersection", &tmp);
|
|
|
|
p2p_channels_remove_freqs(&tmp, &p2p->no_go_freq);
|
|
|
|
p2p_channels_dump(p2p, "intersection after no-GO removal", &tmp);
|
|
|
|
p2p_channels_intersect(&tmp, &p2p->cfg->channels, &intersection);
|
|
|
|
p2p_channels_dump(p2p, "intersection with local channel list",
|
2013-10-22 12:45:46 -04:00
|
|
|
&intersection);
|
2012-12-27 00:39:57 -05:00
|
|
|
if (intersection.reg_classes == 0 ||
|
|
|
|
intersection.reg_class[0].channels == 0) {
|
|
|
|
*status = P2P_SC_FAIL_NO_COMMON_CHANNELS;
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "No common channels found");
|
2012-12-27 00:39:57 -05:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!p2p_channels_includes(&intersection, p2p->op_reg_class,
|
2012-12-27 01:06:55 -05:00
|
|
|
p2p->op_channel)) {
|
|
|
|
if (dev->flags & P2P_DEV_FORCE_FREQ) {
|
|
|
|
*status = P2P_SC_FAIL_NO_COMMON_CHANNELS;
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Peer does not support the forced channel");
|
2012-12-27 01:06:55 -05:00
|
|
|
return -1;
|
|
|
|
}
|
2012-12-27 01:16:42 -05:00
|
|
|
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Selected operating channel (op_class %u channel %u) not acceptable to the peer",
|
|
|
|
p2p->op_reg_class, p2p->op_channel);
|
2012-12-27 01:16:42 -05:00
|
|
|
p2p_reselect_channel(p2p, &intersection);
|
|
|
|
} else if (!(dev->flags & P2P_DEV_FORCE_FREQ) &&
|
|
|
|
!p2p->cfg->cfg_op_channel) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Try to optimize channel selection with peer information received; previously selected op_class %u channel %u",
|
2012-12-27 01:16:42 -05:00
|
|
|
p2p->op_reg_class, p2p->op_channel);
|
2012-12-27 00:39:57 -05:00
|
|
|
p2p_reselect_channel(p2p, &intersection);
|
2012-12-27 01:06:55 -05:00
|
|
|
}
|
2012-12-27 00:39:57 -05:00
|
|
|
|
|
|
|
if (!p2p->ssid_set) {
|
|
|
|
p2p_build_ssid(p2p, p2p->ssid, &p2p->ssid_len);
|
|
|
|
p2p->ssid_set = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2015-07-24 04:23:24 -04:00
|
|
|
static void p2p_check_pref_chan_no_recv(struct p2p_data *p2p, int go,
|
|
|
|
struct p2p_device *dev,
|
|
|
|
struct p2p_message *msg,
|
|
|
|
unsigned freq_list[], unsigned int size)
|
|
|
|
{
|
|
|
|
u8 op_class, op_channel;
|
2015-08-01 10:03:12 -04:00
|
|
|
unsigned int oper_freq = 0, i, j;
|
2015-07-24 04:23:24 -04:00
|
|
|
int found = 0;
|
|
|
|
|
|
|
|
p2p_dbg(p2p,
|
|
|
|
"Peer didn't provide a preferred frequency list, see if any of our preferred channels are supported by peer device");
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Search for a common channel in our preferred frequency list which is
|
|
|
|
* also supported by the peer device.
|
|
|
|
*/
|
|
|
|
for (i = 0; i < size && !found; i++) {
|
|
|
|
/*
|
|
|
|
* Make sure that the common frequency is:
|
|
|
|
* 1. Supported by peer
|
|
|
|
* 2. Allowed for P2P use.
|
|
|
|
*/
|
|
|
|
oper_freq = freq_list[i];
|
|
|
|
if (p2p_freq_to_channel(oper_freq, &op_class,
|
|
|
|
&op_channel) < 0) {
|
|
|
|
p2p_dbg(p2p, "Unsupported frequency %u MHz", oper_freq);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if (!p2p_channels_includes(&p2p->cfg->channels,
|
|
|
|
op_class, op_channel) &&
|
|
|
|
(go || !p2p_channels_includes(&p2p->cfg->cli_channels,
|
|
|
|
op_class, op_channel))) {
|
|
|
|
p2p_dbg(p2p,
|
|
|
|
"Freq %u MHz (oper_class %u channel %u) not allowed for P2P",
|
|
|
|
oper_freq, op_class, op_channel);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
for (j = 0; j < msg->channel_list_len; j++) {
|
|
|
|
|
|
|
|
if (op_channel != msg->channel_list[j])
|
|
|
|
continue;
|
|
|
|
|
|
|
|
p2p->op_reg_class = op_class;
|
|
|
|
p2p->op_channel = op_channel;
|
|
|
|
os_memcpy(&p2p->channels, &p2p->cfg->channels,
|
|
|
|
sizeof(struct p2p_channels));
|
|
|
|
found = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (found) {
|
|
|
|
p2p_dbg(p2p,
|
|
|
|
"Freq %d MHz is a preferred channel and is also supported by peer, use it as the operating channel",
|
|
|
|
oper_freq);
|
|
|
|
} else {
|
|
|
|
p2p_dbg(p2p,
|
|
|
|
"None of our preferred channels are supported by peer!. Use: %d MHz for oper_channel",
|
|
|
|
dev->oper_freq);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void p2p_check_pref_chan_recv(struct p2p_data *p2p, int go,
|
|
|
|
struct p2p_device *dev,
|
|
|
|
struct p2p_message *msg,
|
|
|
|
unsigned freq_list[], unsigned int size)
|
|
|
|
{
|
|
|
|
u8 op_class, op_channel;
|
2015-08-01 10:03:12 -04:00
|
|
|
unsigned int oper_freq = 0, i, j;
|
2015-07-24 04:23:24 -04:00
|
|
|
int found = 0;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Peer device supports a Preferred Frequency List.
|
|
|
|
* Search for a common channel in the preferred frequency lists
|
|
|
|
* of both peer and local devices.
|
|
|
|
*/
|
|
|
|
for (i = 0; i < size && !found; i++) {
|
|
|
|
for (j = 2; j < (msg->pref_freq_list_len / 2); j++) {
|
|
|
|
oper_freq = p2p_channel_to_freq(
|
|
|
|
msg->pref_freq_list[2 * j],
|
|
|
|
msg->pref_freq_list[2 * j + 1]);
|
|
|
|
if (freq_list[i] != oper_freq)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Make sure that the found frequency is:
|
|
|
|
* 1. Supported
|
|
|
|
* 2. Allowed for P2P use.
|
|
|
|
*/
|
|
|
|
if (p2p_freq_to_channel(oper_freq, &op_class,
|
|
|
|
&op_channel) < 0) {
|
|
|
|
p2p_dbg(p2p, "Unsupported frequency %u MHz",
|
|
|
|
oper_freq);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!p2p_channels_includes(&p2p->cfg->channels,
|
|
|
|
op_class, op_channel) &&
|
|
|
|
(go ||
|
|
|
|
!p2p_channels_includes(&p2p->cfg->cli_channels,
|
|
|
|
op_class, op_channel))) {
|
|
|
|
p2p_dbg(p2p,
|
|
|
|
"Freq %u MHz (oper_class %u channel %u) not allowed for P2P",
|
|
|
|
oper_freq, op_class, op_channel);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
p2p->op_reg_class = op_class;
|
|
|
|
p2p->op_channel = op_channel;
|
|
|
|
os_memcpy(&p2p->channels, &p2p->cfg->channels,
|
|
|
|
sizeof(struct p2p_channels));
|
|
|
|
found = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (found) {
|
|
|
|
p2p_dbg(p2p,
|
|
|
|
"Freq %d MHz is a common preferred channel for both peer and local, use it as operating channel",
|
|
|
|
oper_freq);
|
|
|
|
} else {
|
|
|
|
p2p_dbg(p2p,
|
|
|
|
"No common preferred channels found! Use: %d MHz for oper_channel",
|
|
|
|
dev->oper_freq);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2015-08-10 21:09:27 -04:00
|
|
|
void p2p_check_pref_chan(struct p2p_data *p2p, int go,
|
|
|
|
struct p2p_device *dev, struct p2p_message *msg)
|
2015-07-24 04:23:24 -04:00
|
|
|
{
|
|
|
|
unsigned int freq_list[P2P_MAX_PREF_CHANNELS], size;
|
|
|
|
unsigned int i;
|
|
|
|
u8 op_class, op_channel;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Use the preferred channel list from the driver only if there is no
|
|
|
|
* forced_freq, e.g., P2P_CONNECT freq=..., and no preferred operating
|
|
|
|
* channel hardcoded in the configuration file.
|
|
|
|
*/
|
|
|
|
if (!p2p->cfg->get_pref_freq_list || p2p->cfg->num_pref_chan ||
|
|
|
|
(dev->flags & P2P_DEV_FORCE_FREQ) || p2p->cfg->cfg_op_channel)
|
|
|
|
return;
|
|
|
|
|
|
|
|
/* Obtain our preferred frequency list from driver based on P2P role. */
|
|
|
|
size = P2P_MAX_PREF_CHANNELS;
|
|
|
|
if (p2p->cfg->get_pref_freq_list(p2p->cfg->cb_ctx, go, &size,
|
|
|
|
freq_list))
|
|
|
|
return;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check if peer's preference of operating channel is in
|
|
|
|
* our preferred channel list.
|
|
|
|
*/
|
|
|
|
for (i = 0; i < size; i++) {
|
|
|
|
if (freq_list[i] == (unsigned int) dev->oper_freq)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (i != size) {
|
|
|
|
/* Peer operating channel preference matches our preference */
|
|
|
|
if (p2p_freq_to_channel(freq_list[i], &op_class, &op_channel) <
|
|
|
|
0) {
|
|
|
|
p2p_dbg(p2p,
|
|
|
|
"Peer operating channel preference is unsupported frequency %u MHz",
|
|
|
|
freq_list[i]);
|
|
|
|
} else {
|
|
|
|
p2p->op_reg_class = op_class;
|
|
|
|
p2p->op_channel = op_channel;
|
|
|
|
os_memcpy(&p2p->channels, &p2p->cfg->channels,
|
|
|
|
sizeof(struct p2p_channels));
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
p2p_dbg(p2p,
|
|
|
|
"Peer operating channel preference: %d MHz is not in our preferred channel list",
|
|
|
|
dev->oper_freq);
|
|
|
|
|
|
|
|
/*
|
|
|
|
Check if peer's preferred channel list is
|
2015-08-10 21:09:27 -04:00
|
|
|
* _not_ included in the GO Negotiation Request or Invitation Request.
|
2015-07-24 04:23:24 -04:00
|
|
|
*/
|
|
|
|
if (msg->pref_freq_list_len == 0)
|
|
|
|
p2p_check_pref_chan_no_recv(p2p, go, dev, msg, freq_list, size);
|
|
|
|
else
|
|
|
|
p2p_check_pref_chan_recv(p2p, go, dev, msg, freq_list, size);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-07-18 17:30:25 -04:00
|
|
|
void p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa,
|
|
|
|
const u8 *data, size_t len, int rx_freq)
|
|
|
|
{
|
|
|
|
struct p2p_device *dev = NULL;
|
|
|
|
struct wpabuf *resp;
|
|
|
|
struct p2p_message msg;
|
|
|
|
u8 status = P2P_SC_FAIL_INVALID_PARAMS;
|
|
|
|
int tie_breaker = 0;
|
|
|
|
int freq;
|
|
|
|
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Received GO Negotiation Request from " MACSTR "(freq=%d)",
|
|
|
|
MAC2STR(sa), rx_freq);
|
2010-07-18 17:30:25 -04:00
|
|
|
|
|
|
|
if (p2p_parse(data, len, &msg))
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (!msg.capability) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Mandatory Capability attribute missing from GO Negotiation Request");
|
2010-07-18 17:30:25 -04:00
|
|
|
#ifdef CONFIG_P2P_STRICT
|
|
|
|
goto fail;
|
|
|
|
#endif /* CONFIG_P2P_STRICT */
|
|
|
|
}
|
|
|
|
|
|
|
|
if (msg.go_intent)
|
|
|
|
tie_breaker = *msg.go_intent & 0x01;
|
|
|
|
else {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Mandatory GO Intent attribute missing from GO Negotiation Request");
|
2010-07-18 17:30:25 -04:00
|
|
|
#ifdef CONFIG_P2P_STRICT
|
|
|
|
goto fail;
|
|
|
|
#endif /* CONFIG_P2P_STRICT */
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!msg.config_timeout) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Mandatory Configuration Timeout attribute missing from GO Negotiation Request");
|
2010-07-18 17:30:25 -04:00
|
|
|
#ifdef CONFIG_P2P_STRICT
|
|
|
|
goto fail;
|
|
|
|
#endif /* CONFIG_P2P_STRICT */
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!msg.listen_channel) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "No Listen Channel attribute received");
|
2010-07-18 17:30:25 -04:00
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
if (!msg.operating_channel) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "No Operating Channel attribute received");
|
2010-07-18 17:30:25 -04:00
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
if (!msg.channel_list) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "No Channel List attribute received");
|
2010-07-18 17:30:25 -04:00
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
if (!msg.intended_addr) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "No Intended P2P Interface Address attribute received");
|
2010-07-18 17:30:25 -04:00
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
if (!msg.p2p_device_info) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "No P2P Device Info attribute received");
|
2010-07-18 17:30:25 -04:00
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (os_memcmp(msg.p2p_device_addr, sa, ETH_ALEN) != 0) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Unexpected GO Negotiation Request SA=" MACSTR
|
2010-07-18 17:30:25 -04:00
|
|
|
" != dev_addr=" MACSTR,
|
|
|
|
MAC2STR(sa), MAC2STR(msg.p2p_device_addr));
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
|
|
|
dev = p2p_get_device(p2p, sa);
|
|
|
|
|
|
|
|
if (msg.status && *msg.status) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Unexpected Status attribute (%d) in GO Negotiation Request",
|
|
|
|
*msg.status);
|
2014-02-07 09:26:59 -05:00
|
|
|
if (dev && p2p->go_neg_peer == dev &&
|
|
|
|
*msg.status == P2P_SC_FAIL_REJECTED_BY_USER) {
|
|
|
|
/*
|
|
|
|
* This mechanism for using Status attribute in GO
|
|
|
|
* Negotiation Request is not compliant with the P2P
|
|
|
|
* specification, but some deployed devices use it to
|
|
|
|
* indicate rejection of GO Negotiation in a case where
|
|
|
|
* they have sent out GO Negotiation Response with
|
|
|
|
* status 1. The P2P specification explicitly disallows
|
|
|
|
* this. To avoid unnecessary interoperability issues
|
|
|
|
* and extra frames, mark the pending negotiation as
|
|
|
|
* failed and do not reply to this GO Negotiation
|
|
|
|
* Request frame.
|
|
|
|
*/
|
|
|
|
p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
|
2014-10-29 07:04:09 -04:00
|
|
|
p2p_go_neg_failed(p2p, *msg.status);
|
2014-02-07 09:26:59 -05:00
|
|
|
p2p_parse_free(&msg);
|
|
|
|
return;
|
|
|
|
}
|
2010-07-18 17:30:25 -04:00
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (dev == NULL)
|
|
|
|
dev = p2p_add_dev_from_go_neg_req(p2p, sa, &msg);
|
2014-03-06 09:15:27 -05:00
|
|
|
else if ((dev->flags & P2P_DEV_PROBE_REQ_ONLY) ||
|
|
|
|
!(dev->flags & P2P_DEV_REPORTED))
|
2010-07-18 17:30:25 -04:00
|
|
|
p2p_add_dev_info(p2p, sa, dev, &msg);
|
2014-01-17 12:35:03 -05:00
|
|
|
else if (!dev->listen_freq && !dev->oper_freq) {
|
|
|
|
/*
|
|
|
|
* This may happen if the peer entry was added based on PD
|
|
|
|
* Request and no Probe Request/Response frame has been received
|
|
|
|
* from this peer (or that information has timed out).
|
|
|
|
*/
|
|
|
|
p2p_dbg(p2p, "Update peer " MACSTR
|
|
|
|
" based on GO Neg Req since listen/oper freq not known",
|
|
|
|
MAC2STR(dev->info.p2p_device_addr));
|
|
|
|
p2p_add_dev_info(p2p, sa, dev, &msg);
|
|
|
|
}
|
|
|
|
|
2014-10-28 07:26:43 -04:00
|
|
|
if (p2p->go_neg_peer && p2p->go_neg_peer == dev)
|
|
|
|
eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
|
|
|
|
|
2010-07-18 17:30:25 -04:00
|
|
|
if (dev && dev->flags & P2P_DEV_USER_REJECTED) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "User has rejected this peer");
|
2010-07-18 17:30:25 -04:00
|
|
|
status = P2P_SC_FAIL_REJECTED_BY_USER;
|
2013-04-27 11:50:14 -04:00
|
|
|
} else if (dev == NULL ||
|
|
|
|
(dev->wps_method == WPS_NOT_READY &&
|
|
|
|
(p2p->authorized_oob_dev_pw_id == 0 ||
|
|
|
|
p2p->authorized_oob_dev_pw_id !=
|
|
|
|
msg.dev_password_id))) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Not ready for GO negotiation with " MACSTR,
|
2010-07-18 17:30:25 -04:00
|
|
|
MAC2STR(sa));
|
|
|
|
status = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
|
2010-07-26 18:31:19 -04:00
|
|
|
p2p->cfg->go_neg_req_rx(p2p->cfg->cb_ctx, sa,
|
2015-06-02 01:47:33 -04:00
|
|
|
msg.dev_password_id,
|
|
|
|
msg.go_intent ? (*msg.go_intent >> 1) :
|
|
|
|
0);
|
2010-07-18 17:30:25 -04:00
|
|
|
} else if (p2p->go_neg_peer && p2p->go_neg_peer != dev) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Already in Group Formation with another peer");
|
2010-07-18 17:30:25 -04:00
|
|
|
status = P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
|
|
|
|
} else {
|
|
|
|
int go;
|
|
|
|
|
|
|
|
if (!p2p->go_neg_peer) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Starting GO Negotiation with previously authorized peer");
|
2010-07-02 11:27:00 -04:00
|
|
|
if (!(dev->flags & P2P_DEV_FORCE_FREQ)) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Use default channel settings");
|
2010-07-02 11:27:00 -04:00
|
|
|
p2p->op_reg_class = p2p->cfg->op_reg_class;
|
|
|
|
p2p->op_channel = p2p->cfg->op_channel;
|
|
|
|
os_memcpy(&p2p->channels, &p2p->cfg->channels,
|
|
|
|
sizeof(struct p2p_channels));
|
|
|
|
} else {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Use previously configured forced channel settings");
|
2010-07-02 11:27:00 -04:00
|
|
|
}
|
2010-07-18 17:30:25 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
dev->flags &= ~P2P_DEV_NOT_YET_READY;
|
|
|
|
|
|
|
|
if (!msg.go_intent) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "No GO Intent attribute received");
|
2010-07-18 17:30:25 -04:00
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
if ((*msg.go_intent >> 1) > P2P_MAX_GO_INTENT) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Invalid GO Intent value (%u) received",
|
2010-07-18 17:30:25 -04:00
|
|
|
*msg.go_intent >> 1);
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (dev->go_neg_req_sent &&
|
|
|
|
os_memcmp(sa, p2p->cfg->dev_addr, ETH_ALEN) > 0) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Do not reply since peer has higher address and GO Neg Request already sent");
|
2010-07-18 17:30:25 -04:00
|
|
|
p2p_parse_free(&msg);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2015-10-15 14:21:28 -04:00
|
|
|
if (dev->go_neg_req_sent &&
|
|
|
|
(dev->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
|
|
|
|
p2p_dbg(p2p,
|
|
|
|
"Do not reply since peer is waiting for us to start a new GO Negotiation and GO Neg Request already sent");
|
|
|
|
p2p_parse_free(&msg);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2010-07-18 17:30:25 -04:00
|
|
|
go = p2p_go_det(p2p->go_intent, *msg.go_intent);
|
|
|
|
if (go < 0) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Incompatible GO Intent");
|
2010-07-18 17:30:25 -04:00
|
|
|
status = P2P_SC_FAIL_BOTH_GO_INTENT_15;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (p2p_peer_channels(p2p, dev, msg.channel_list,
|
|
|
|
msg.channel_list_len) < 0) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "No common channels found");
|
2010-07-18 17:30:25 -04:00
|
|
|
status = P2P_SC_FAIL_NO_COMMON_CHANNELS;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (msg.dev_password_id) {
|
|
|
|
case DEV_PW_REGISTRAR_SPECIFIED:
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "PIN from peer Display");
|
2010-07-18 17:30:25 -04:00
|
|
|
if (dev->wps_method != WPS_PIN_KEYPAD) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "We have wps_method=%s -> incompatible",
|
2010-07-18 17:30:25 -04:00
|
|
|
p2p_wps_method_str(dev->wps_method));
|
|
|
|
status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case DEV_PW_USER_SPECIFIED:
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Peer entered PIN on Keypad");
|
2011-09-08 09:40:03 -04:00
|
|
|
if (dev->wps_method != WPS_PIN_DISPLAY) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "We have wps_method=%s -> incompatible",
|
2010-07-18 17:30:25 -04:00
|
|
|
p2p_wps_method_str(dev->wps_method));
|
|
|
|
status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case DEV_PW_PUSHBUTTON:
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Peer using pushbutton");
|
2010-07-18 17:30:25 -04:00
|
|
|
if (dev->wps_method != WPS_PBC) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "We have wps_method=%s -> incompatible",
|
2010-07-18 17:30:25 -04:00
|
|
|
p2p_wps_method_str(dev->wps_method));
|
|
|
|
status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
break;
|
2014-09-11 11:27:44 -04:00
|
|
|
case DEV_PW_P2PS_DEFAULT:
|
|
|
|
p2p_dbg(p2p, "Peer using P2PS pin");
|
|
|
|
if (dev->wps_method != WPS_P2PS) {
|
|
|
|
p2p_dbg(p2p,
|
|
|
|
"We have wps_method=%s -> incompatible",
|
|
|
|
p2p_wps_method_str(dev->wps_method));
|
|
|
|
status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
break;
|
2010-07-18 17:30:25 -04:00
|
|
|
default:
|
2013-04-27 11:50:14 -04:00
|
|
|
if (msg.dev_password_id &&
|
|
|
|
msg.dev_password_id == dev->oob_pw_id) {
|
|
|
|
p2p_dbg(p2p, "Peer using NFC");
|
|
|
|
if (dev->wps_method != WPS_NFC) {
|
|
|
|
p2p_dbg(p2p, "We have wps_method=%s -> incompatible",
|
|
|
|
p2p_wps_method_str(
|
|
|
|
dev->wps_method));
|
|
|
|
status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
#ifdef CONFIG_WPS_NFC
|
|
|
|
if (p2p->authorized_oob_dev_pw_id &&
|
|
|
|
msg.dev_password_id ==
|
|
|
|
p2p->authorized_oob_dev_pw_id) {
|
|
|
|
p2p_dbg(p2p, "Using static handover with our device password from NFC Tag");
|
|
|
|
dev->wps_method = WPS_NFC;
|
|
|
|
dev->oob_pw_id = p2p->authorized_oob_dev_pw_id;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
#endif /* CONFIG_WPS_NFC */
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Unsupported Device Password ID %d",
|
2010-07-18 17:30:25 -04:00
|
|
|
msg.dev_password_id);
|
|
|
|
status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
2012-12-27 00:39:57 -05:00
|
|
|
if (go && p2p_go_select_channel(p2p, dev, &status) < 0)
|
|
|
|
goto fail;
|
2010-07-18 17:30:25 -04:00
|
|
|
|
|
|
|
dev->go_state = go ? LOCAL_GO : REMOTE_GO;
|
2013-04-27 14:03:16 -04:00
|
|
|
dev->oper_freq = p2p_channel_to_freq(msg.operating_channel[3],
|
2010-07-18 17:30:25 -04:00
|
|
|
msg.operating_channel[4]);
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Peer operating channel preference: %d MHz",
|
|
|
|
dev->oper_freq);
|
2010-07-18 17:30:25 -04:00
|
|
|
|
2015-07-24 04:23:24 -04:00
|
|
|
/*
|
|
|
|
* Use the driver preferred frequency list extension if
|
|
|
|
* supported.
|
|
|
|
*/
|
|
|
|
p2p_check_pref_chan(p2p, go, dev, &msg);
|
|
|
|
|
2010-09-06 14:04:01 -04:00
|
|
|
if (msg.config_timeout) {
|
|
|
|
dev->go_timeout = msg.config_timeout[0];
|
|
|
|
dev->client_timeout = msg.config_timeout[1];
|
|
|
|
}
|
|
|
|
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "GO Negotiation with " MACSTR, MAC2STR(sa));
|
2010-07-18 17:30:25 -04:00
|
|
|
if (p2p->state != P2P_IDLE)
|
2010-10-20 12:37:47 -04:00
|
|
|
p2p_stop_find_for_freq(p2p, rx_freq);
|
2010-07-18 17:30:25 -04:00
|
|
|
p2p_set_state(p2p, P2P_GO_NEG);
|
|
|
|
p2p_clear_timeout(p2p);
|
|
|
|
dev->dialog_token = msg.dialog_token;
|
|
|
|
os_memcpy(dev->intended_addr, msg.intended_addr, ETH_ALEN);
|
|
|
|
p2p->go_neg_peer = dev;
|
2014-10-28 07:26:43 -04:00
|
|
|
eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
|
2010-07-18 17:30:25 -04:00
|
|
|
status = P2P_SC_SUCCESS;
|
|
|
|
}
|
|
|
|
|
|
|
|
fail:
|
2010-09-06 12:00:43 -04:00
|
|
|
if (dev)
|
|
|
|
dev->status = status;
|
2010-07-18 17:30:25 -04:00
|
|
|
resp = p2p_build_go_neg_resp(p2p, dev, msg.dialog_token, status,
|
|
|
|
!tie_breaker);
|
|
|
|
p2p_parse_free(&msg);
|
|
|
|
if (resp == NULL)
|
|
|
|
return;
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Sending GO Negotiation Response");
|
2010-07-18 17:30:25 -04:00
|
|
|
if (rx_freq > 0)
|
|
|
|
freq = rx_freq;
|
|
|
|
else
|
2013-04-27 14:03:16 -04:00
|
|
|
freq = p2p_channel_to_freq(p2p->cfg->reg_class,
|
2010-07-18 17:30:25 -04:00
|
|
|
p2p->cfg->channel);
|
|
|
|
if (freq < 0) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Unknown regulatory class/channel");
|
2010-07-18 17:30:25 -04:00
|
|
|
wpabuf_free(resp);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
if (status == P2P_SC_SUCCESS) {
|
|
|
|
p2p->pending_action_state = P2P_PENDING_GO_NEG_RESPONSE;
|
|
|
|
dev->flags |= P2P_DEV_WAIT_GO_NEG_CONFIRM;
|
2012-06-09 11:31:24 -04:00
|
|
|
if (os_memcmp(sa, p2p->cfg->dev_addr, ETH_ALEN) < 0) {
|
|
|
|
/*
|
|
|
|
* Peer has smaller address, so the GO Negotiation
|
|
|
|
* Response from us is expected to complete
|
|
|
|
* negotiation. Ignore a GO Negotiation Response from
|
|
|
|
* the peer if it happens to be received after this
|
|
|
|
* point due to a race condition in GO Negotiation
|
|
|
|
* Request transmission and processing.
|
|
|
|
*/
|
|
|
|
dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
|
|
|
|
}
|
2010-07-18 17:30:25 -04:00
|
|
|
} else
|
|
|
|
p2p->pending_action_state =
|
|
|
|
P2P_PENDING_GO_NEG_RESPONSE_FAILURE;
|
2010-10-20 12:41:20 -04:00
|
|
|
if (p2p_send_action(p2p, freq, sa, p2p->cfg->dev_addr,
|
|
|
|
p2p->cfg->dev_addr,
|
2013-02-28 15:15:46 -05:00
|
|
|
wpabuf_head(resp), wpabuf_len(resp), 500) < 0) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Failed to send Action frame");
|
2010-07-18 17:30:25 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
wpabuf_free(resp);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static struct wpabuf * p2p_build_go_neg_conf(struct p2p_data *p2p,
|
|
|
|
struct p2p_device *peer,
|
|
|
|
u8 dialog_token, u8 status,
|
|
|
|
const u8 *resp_chan, int go)
|
|
|
|
{
|
|
|
|
struct wpabuf *buf;
|
|
|
|
u8 *len;
|
|
|
|
struct p2p_channels res;
|
|
|
|
u8 group_capab;
|
2012-03-02 10:26:01 -05:00
|
|
|
size_t extra = 0;
|
2010-07-18 17:30:25 -04:00
|
|
|
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Building GO Negotiation Confirm");
|
2012-03-02 10:26:01 -05:00
|
|
|
|
|
|
|
#ifdef CONFIG_WIFI_DISPLAY
|
|
|
|
if (p2p->wfd_ie_go_neg)
|
|
|
|
extra = wpabuf_len(p2p->wfd_ie_go_neg);
|
|
|
|
#endif /* CONFIG_WIFI_DISPLAY */
|
|
|
|
|
2014-07-04 11:23:43 -04:00
|
|
|
if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_CONF])
|
|
|
|
extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_CONF]);
|
|
|
|
|
2012-03-02 10:26:01 -05:00
|
|
|
buf = wpabuf_alloc(1000 + extra);
|
2010-07-18 17:30:25 -04:00
|
|
|
if (buf == NULL)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
p2p_buf_add_public_action_hdr(buf, P2P_GO_NEG_CONF, dialog_token);
|
|
|
|
|
|
|
|
len = p2p_buf_add_ie_hdr(buf);
|
|
|
|
p2p_buf_add_status(buf, status);
|
|
|
|
group_capab = 0;
|
2010-07-10 13:19:34 -04:00
|
|
|
if (peer->go_state == LOCAL_GO) {
|
2011-10-24 10:29:37 -04:00
|
|
|
if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
|
2010-07-10 13:19:34 -04:00
|
|
|
group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP;
|
2011-10-24 10:29:37 -04:00
|
|
|
if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
|
|
|
|
group_capab |=
|
|
|
|
P2P_GROUP_CAPAB_PERSISTENT_RECONN;
|
|
|
|
}
|
2010-07-10 13:19:34 -04:00
|
|
|
if (p2p->cross_connect)
|
|
|
|
group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
|
2010-09-08 14:18:10 -04:00
|
|
|
if (p2p->cfg->p2p_intra_bss)
|
|
|
|
group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST;
|
2010-07-10 13:19:34 -04:00
|
|
|
}
|
2012-06-16 12:54:47 -04:00
|
|
|
p2p_buf_add_capability(buf, p2p->dev_capab &
|
|
|
|
~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY,
|
|
|
|
group_capab);
|
2010-07-18 17:30:25 -04:00
|
|
|
if (go || resp_chan == NULL)
|
|
|
|
p2p_buf_add_operating_channel(buf, p2p->cfg->country,
|
|
|
|
p2p->op_reg_class,
|
|
|
|
p2p->op_channel);
|
|
|
|
else
|
|
|
|
p2p_buf_add_operating_channel(buf, (const char *) resp_chan,
|
|
|
|
resp_chan[3], resp_chan[4]);
|
|
|
|
p2p_channels_intersect(&p2p->channels, &peer->channels, &res);
|
|
|
|
p2p_buf_add_channel_list(buf, p2p->cfg->country, &res);
|
|
|
|
if (go) {
|
|
|
|
p2p_buf_add_group_id(buf, p2p->cfg->dev_addr, p2p->ssid,
|
|
|
|
p2p->ssid_len);
|
|
|
|
}
|
|
|
|
p2p_buf_update_ie_hdr(buf, len);
|
|
|
|
|
2012-03-02 10:26:01 -05:00
|
|
|
#ifdef CONFIG_WIFI_DISPLAY
|
|
|
|
if (p2p->wfd_ie_go_neg)
|
|
|
|
wpabuf_put_buf(buf, p2p->wfd_ie_go_neg);
|
|
|
|
#endif /* CONFIG_WIFI_DISPLAY */
|
|
|
|
|
2014-07-04 11:23:43 -04:00
|
|
|
if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_CONF])
|
|
|
|
wpabuf_put_buf(buf, p2p->vendor_elem[VENDOR_ELEM_P2P_GO_NEG_CONF]);
|
|
|
|
|
2010-07-18 17:30:25 -04:00
|
|
|
return buf;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa,
|
|
|
|
const u8 *data, size_t len, int rx_freq)
|
|
|
|
{
|
|
|
|
struct p2p_device *dev;
|
|
|
|
int go = -1;
|
|
|
|
struct p2p_message msg;
|
|
|
|
u8 status = P2P_SC_SUCCESS;
|
|
|
|
int freq;
|
|
|
|
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Received GO Negotiation Response from " MACSTR
|
2010-07-18 17:30:25 -04:00
|
|
|
" (freq=%d)", MAC2STR(sa), rx_freq);
|
|
|
|
dev = p2p_get_device(p2p, sa);
|
|
|
|
if (dev == NULL || dev->wps_method == WPS_NOT_READY ||
|
|
|
|
dev != p2p->go_neg_peer) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Not ready for GO negotiation with " MACSTR,
|
2010-07-18 17:30:25 -04:00
|
|
|
MAC2STR(sa));
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (p2p_parse(data, len, &msg))
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (!(dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE)) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Was not expecting GO Negotiation Response - ignore");
|
2010-07-18 17:30:25 -04:00
|
|
|
p2p_parse_free(&msg);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
|
|
|
|
|
|
|
|
if (msg.dialog_token != dev->dialog_token) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Unexpected Dialog Token %u (expected %u)",
|
2010-07-18 17:30:25 -04:00
|
|
|
msg.dialog_token, dev->dialog_token);
|
|
|
|
p2p_parse_free(&msg);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!msg.status) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "No Status attribute received");
|
2010-07-18 17:30:25 -04:00
|
|
|
status = P2P_SC_FAIL_INVALID_PARAMS;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
if (*msg.status) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "GO Negotiation rejected: status %d", *msg.status);
|
2010-07-18 17:30:25 -04:00
|
|
|
dev->go_neg_req_sent = 0;
|
|
|
|
if (*msg.status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Wait for the peer to become ready for GO Negotiation");
|
2010-07-18 17:30:25 -04:00
|
|
|
dev->flags |= P2P_DEV_NOT_YET_READY;
|
2014-10-28 07:26:43 -04:00
|
|
|
eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p,
|
|
|
|
NULL);
|
|
|
|
eloop_register_timeout(120, 0, p2p_go_neg_wait_timeout,
|
|
|
|
p2p, NULL);
|
2014-09-09 10:20:23 -04:00
|
|
|
if (p2p->state == P2P_CONNECT_LISTEN)
|
|
|
|
p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
|
|
|
|
else
|
|
|
|
p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
|
2010-07-18 17:30:25 -04:00
|
|
|
p2p_set_timeout(p2p, 0, 0);
|
|
|
|
} else {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Stop GO Negotiation attempt");
|
2014-10-29 07:04:09 -04:00
|
|
|
p2p_go_neg_failed(p2p, *msg.status);
|
2010-07-18 17:30:25 -04:00
|
|
|
}
|
|
|
|
p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
|
|
|
|
p2p_parse_free(&msg);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!msg.capability) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Mandatory Capability attribute missing from GO Negotiation Response");
|
2010-07-18 17:30:25 -04:00
|
|
|
#ifdef CONFIG_P2P_STRICT
|
|
|
|
status = P2P_SC_FAIL_INVALID_PARAMS;
|
|
|
|
goto fail;
|
|
|
|
#endif /* CONFIG_P2P_STRICT */
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!msg.p2p_device_info) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Mandatory P2P Device Info attribute missing from GO Negotiation Response");
|
2010-07-18 17:30:25 -04:00
|
|
|
#ifdef CONFIG_P2P_STRICT
|
|
|
|
status = P2P_SC_FAIL_INVALID_PARAMS;
|
|
|
|
goto fail;
|
|
|
|
#endif /* CONFIG_P2P_STRICT */
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!msg.intended_addr) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "No Intended P2P Interface Address attribute received");
|
2010-07-18 17:30:25 -04:00
|
|
|
status = P2P_SC_FAIL_INVALID_PARAMS;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!msg.go_intent) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "No GO Intent attribute received");
|
2010-07-18 17:30:25 -04:00
|
|
|
status = P2P_SC_FAIL_INVALID_PARAMS;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
if ((*msg.go_intent >> 1) > P2P_MAX_GO_INTENT) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Invalid GO Intent value (%u) received",
|
2010-07-18 17:30:25 -04:00
|
|
|
*msg.go_intent >> 1);
|
|
|
|
status = P2P_SC_FAIL_INVALID_PARAMS;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
|
|
|
go = p2p_go_det(p2p->go_intent, *msg.go_intent);
|
|
|
|
if (go < 0) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Incompatible GO Intent");
|
2010-07-18 17:30:25 -04:00
|
|
|
status = P2P_SC_FAIL_INCOMPATIBLE_PARAMS;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!go && msg.group_id) {
|
2010-08-05 12:15:11 -04:00
|
|
|
/* Store SSID for Provisioning step */
|
|
|
|
p2p->ssid_len = msg.group_id_len - ETH_ALEN;
|
|
|
|
os_memcpy(p2p->ssid, msg.group_id + ETH_ALEN, p2p->ssid_len);
|
2010-07-18 17:30:25 -04:00
|
|
|
} else if (!go) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Mandatory P2P Group ID attribute missing from GO Negotiation Response");
|
2010-08-05 12:15:11 -04:00
|
|
|
p2p->ssid_len = 0;
|
2010-07-18 17:30:25 -04:00
|
|
|
status = P2P_SC_FAIL_INVALID_PARAMS;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!msg.config_timeout) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Mandatory Configuration Timeout attribute missing from GO Negotiation Response");
|
2010-07-18 17:30:25 -04:00
|
|
|
#ifdef CONFIG_P2P_STRICT
|
|
|
|
status = P2P_SC_FAIL_INVALID_PARAMS;
|
|
|
|
goto fail;
|
|
|
|
#endif /* CONFIG_P2P_STRICT */
|
2010-09-06 14:04:01 -04:00
|
|
|
} else {
|
|
|
|
dev->go_timeout = msg.config_timeout[0];
|
|
|
|
dev->client_timeout = msg.config_timeout[1];
|
2010-07-18 17:30:25 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
if (!msg.operating_channel && !go) {
|
|
|
|
/*
|
|
|
|
* Note: P2P Client may omit Operating Channel attribute to
|
|
|
|
* indicate it does not have a preference.
|
|
|
|
*/
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "No Operating Channel attribute received");
|
2010-07-18 17:30:25 -04:00
|
|
|
status = P2P_SC_FAIL_INVALID_PARAMS;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
if (!msg.channel_list) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "No Channel List attribute received");
|
2010-07-18 17:30:25 -04:00
|
|
|
status = P2P_SC_FAIL_INVALID_PARAMS;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (p2p_peer_channels(p2p, dev, msg.channel_list,
|
|
|
|
msg.channel_list_len) < 0) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "No common channels found");
|
2010-07-18 17:30:25 -04:00
|
|
|
status = P2P_SC_FAIL_NO_COMMON_CHANNELS;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (msg.operating_channel) {
|
2013-04-27 14:03:16 -04:00
|
|
|
dev->oper_freq = p2p_channel_to_freq(msg.operating_channel[3],
|
2010-07-18 17:30:25 -04:00
|
|
|
msg.operating_channel[4]);
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Peer operating channel preference: %d MHz",
|
|
|
|
dev->oper_freq);
|
2010-07-18 17:30:25 -04:00
|
|
|
} else
|
|
|
|
dev->oper_freq = 0;
|
|
|
|
|
|
|
|
switch (msg.dev_password_id) {
|
|
|
|
case DEV_PW_REGISTRAR_SPECIFIED:
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "PIN from peer Display");
|
2010-07-18 17:30:25 -04:00
|
|
|
if (dev->wps_method != WPS_PIN_KEYPAD) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "We have wps_method=%s -> incompatible",
|
2010-07-18 17:30:25 -04:00
|
|
|
p2p_wps_method_str(dev->wps_method));
|
|
|
|
status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case DEV_PW_USER_SPECIFIED:
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Peer entered PIN on Keypad");
|
2011-09-08 09:40:03 -04:00
|
|
|
if (dev->wps_method != WPS_PIN_DISPLAY) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "We have wps_method=%s -> incompatible",
|
2010-07-18 17:30:25 -04:00
|
|
|
p2p_wps_method_str(dev->wps_method));
|
|
|
|
status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case DEV_PW_PUSHBUTTON:
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Peer using pushbutton");
|
2010-07-18 17:30:25 -04:00
|
|
|
if (dev->wps_method != WPS_PBC) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "We have wps_method=%s -> incompatible",
|
2010-07-18 17:30:25 -04:00
|
|
|
p2p_wps_method_str(dev->wps_method));
|
|
|
|
status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
break;
|
2014-09-11 11:27:44 -04:00
|
|
|
case DEV_PW_P2PS_DEFAULT:
|
|
|
|
p2p_dbg(p2p, "P2P: Peer using P2PS default pin");
|
|
|
|
if (dev->wps_method != WPS_P2PS) {
|
|
|
|
p2p_dbg(p2p, "We have wps_method=%s -> incompatible",
|
|
|
|
p2p_wps_method_str(dev->wps_method));
|
|
|
|
status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
break;
|
2010-07-18 17:30:25 -04:00
|
|
|
default:
|
2013-04-27 11:50:14 -04:00
|
|
|
if (msg.dev_password_id &&
|
|
|
|
msg.dev_password_id == dev->oob_pw_id) {
|
|
|
|
p2p_dbg(p2p, "Peer using NFC");
|
|
|
|
if (dev->wps_method != WPS_NFC) {
|
|
|
|
p2p_dbg(p2p, "We have wps_method=%s -> incompatible",
|
|
|
|
p2p_wps_method_str(dev->wps_method));
|
|
|
|
status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Unsupported Device Password ID %d",
|
2010-07-18 17:30:25 -04:00
|
|
|
msg.dev_password_id);
|
|
|
|
status = P2P_SC_FAIL_INCOMPATIBLE_PROV_METHOD;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
2012-12-27 00:39:57 -05:00
|
|
|
if (go && p2p_go_select_channel(p2p, dev, &status) < 0)
|
|
|
|
goto fail;
|
2010-07-18 17:30:25 -04:00
|
|
|
|
2015-07-24 04:23:24 -04:00
|
|
|
/*
|
|
|
|
* Use the driver preferred frequency list extension if local device is
|
|
|
|
* GO.
|
|
|
|
*/
|
|
|
|
if (go)
|
|
|
|
p2p_check_pref_chan(p2p, go, dev, &msg);
|
|
|
|
|
2010-07-18 17:30:25 -04:00
|
|
|
p2p_set_state(p2p, P2P_GO_NEG);
|
|
|
|
p2p_clear_timeout(p2p);
|
|
|
|
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "GO Negotiation with " MACSTR, MAC2STR(sa));
|
2010-07-18 17:30:25 -04:00
|
|
|
os_memcpy(dev->intended_addr, msg.intended_addr, ETH_ALEN);
|
|
|
|
|
|
|
|
fail:
|
2014-04-07 18:12:19 -04:00
|
|
|
/* Store GO Negotiation Confirmation to allow retransmission */
|
|
|
|
wpabuf_free(dev->go_neg_conf);
|
|
|
|
dev->go_neg_conf = p2p_build_go_neg_conf(p2p, dev, msg.dialog_token,
|
|
|
|
status, msg.operating_channel,
|
|
|
|
go);
|
2010-07-18 17:30:25 -04:00
|
|
|
p2p_parse_free(&msg);
|
2014-04-07 18:12:19 -04:00
|
|
|
if (dev->go_neg_conf == NULL)
|
2010-07-18 17:30:25 -04:00
|
|
|
return;
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Sending GO Negotiation Confirm");
|
2010-07-18 17:30:25 -04:00
|
|
|
if (status == P2P_SC_SUCCESS) {
|
|
|
|
p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
|
|
|
|
dev->go_state = go ? LOCAL_GO : REMOTE_GO;
|
|
|
|
} else
|
|
|
|
p2p->pending_action_state = P2P_NO_PENDING_ACTION;
|
|
|
|
if (rx_freq > 0)
|
|
|
|
freq = rx_freq;
|
|
|
|
else
|
|
|
|
freq = dev->listen_freq;
|
2014-04-07 18:12:19 -04:00
|
|
|
|
|
|
|
dev->go_neg_conf_freq = freq;
|
|
|
|
dev->go_neg_conf_sent = 0;
|
|
|
|
|
2010-10-20 12:41:20 -04:00
|
|
|
if (p2p_send_action(p2p, freq, sa, p2p->cfg->dev_addr, sa,
|
2014-04-07 18:12:19 -04:00
|
|
|
wpabuf_head(dev->go_neg_conf),
|
|
|
|
wpabuf_len(dev->go_neg_conf), 200) < 0) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Failed to send Action frame");
|
2014-10-29 07:04:09 -04:00
|
|
|
p2p_go_neg_failed(p2p, -1);
|
2014-01-07 02:39:30 -05:00
|
|
|
p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
|
2014-04-07 18:12:19 -04:00
|
|
|
} else
|
|
|
|
dev->go_neg_conf_sent++;
|
2013-02-26 10:22:11 -05:00
|
|
|
if (status != P2P_SC_SUCCESS) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "GO Negotiation failed");
|
2014-10-29 07:04:09 -04:00
|
|
|
p2p_go_neg_failed(p2p, status);
|
2013-02-26 10:22:11 -05:00
|
|
|
}
|
2010-07-18 17:30:25 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa,
|
|
|
|
const u8 *data, size_t len)
|
|
|
|
{
|
|
|
|
struct p2p_device *dev;
|
|
|
|
struct p2p_message msg;
|
|
|
|
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Received GO Negotiation Confirm from " MACSTR,
|
2010-07-18 17:30:25 -04:00
|
|
|
MAC2STR(sa));
|
|
|
|
dev = p2p_get_device(p2p, sa);
|
|
|
|
if (dev == NULL || dev->wps_method == WPS_NOT_READY ||
|
|
|
|
dev != p2p->go_neg_peer) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Not ready for GO negotiation with " MACSTR,
|
2010-07-18 17:30:25 -04:00
|
|
|
MAC2STR(sa));
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (p2p->pending_action_state == P2P_PENDING_GO_NEG_RESPONSE) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Stopped waiting for TX status on GO Negotiation Response since we already received Confirmation");
|
2010-07-18 17:30:25 -04:00
|
|
|
p2p->pending_action_state = P2P_NO_PENDING_ACTION;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (p2p_parse(data, len, &msg))
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (!(dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Was not expecting GO Negotiation Confirm - ignore");
|
2014-01-28 02:32:35 -05:00
|
|
|
p2p_parse_free(&msg);
|
2010-07-18 17:30:25 -04:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
|
2013-12-19 05:03:29 -05:00
|
|
|
p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
|
2010-07-18 17:30:25 -04:00
|
|
|
|
|
|
|
if (msg.dialog_token != dev->dialog_token) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Unexpected Dialog Token %u (expected %u)",
|
2010-07-18 17:30:25 -04:00
|
|
|
msg.dialog_token, dev->dialog_token);
|
|
|
|
p2p_parse_free(&msg);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!msg.status) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "No Status attribute received");
|
2010-07-18 17:30:25 -04:00
|
|
|
p2p_parse_free(&msg);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
if (*msg.status) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "GO Negotiation rejected: status %d", *msg.status);
|
2014-10-29 07:04:09 -04:00
|
|
|
p2p_go_neg_failed(p2p, *msg.status);
|
2010-07-18 17:30:25 -04:00
|
|
|
p2p_parse_free(&msg);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (dev->go_state == REMOTE_GO && msg.group_id) {
|
2010-08-05 12:15:11 -04:00
|
|
|
/* Store SSID for Provisioning step */
|
|
|
|
p2p->ssid_len = msg.group_id_len - ETH_ALEN;
|
|
|
|
os_memcpy(p2p->ssid, msg.group_id + ETH_ALEN, p2p->ssid_len);
|
2010-07-18 17:30:25 -04:00
|
|
|
} else if (dev->go_state == REMOTE_GO) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Mandatory P2P Group ID attribute missing from GO Negotiation Confirmation");
|
2010-08-05 12:15:11 -04:00
|
|
|
p2p->ssid_len = 0;
|
2014-10-29 07:04:09 -04:00
|
|
|
p2p_go_neg_failed(p2p, P2P_SC_FAIL_INVALID_PARAMS);
|
2010-07-18 17:30:25 -04:00
|
|
|
p2p_parse_free(&msg);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!msg.operating_channel) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Mandatory Operating Channel attribute missing from GO Negotiation Confirmation");
|
2010-07-18 17:30:25 -04:00
|
|
|
#ifdef CONFIG_P2P_STRICT
|
|
|
|
p2p_parse_free(&msg);
|
|
|
|
return;
|
|
|
|
#endif /* CONFIG_P2P_STRICT */
|
2013-08-26 07:16:31 -04:00
|
|
|
} else if (dev->go_state == REMOTE_GO) {
|
|
|
|
int oper_freq = p2p_channel_to_freq(msg.operating_channel[3],
|
|
|
|
msg.operating_channel[4]);
|
|
|
|
if (oper_freq != dev->oper_freq) {
|
|
|
|
p2p_dbg(p2p, "Updated peer (GO) operating channel preference from %d MHz to %d MHz",
|
|
|
|
dev->oper_freq, oper_freq);
|
|
|
|
dev->oper_freq = oper_freq;
|
|
|
|
}
|
2010-07-18 17:30:25 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
if (!msg.channel_list) {
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Mandatory Operating Channel attribute missing from GO Negotiation Confirmation");
|
2010-07-18 17:30:25 -04:00
|
|
|
#ifdef CONFIG_P2P_STRICT
|
|
|
|
p2p_parse_free(&msg);
|
|
|
|
return;
|
|
|
|
#endif /* CONFIG_P2P_STRICT */
|
|
|
|
}
|
|
|
|
|
|
|
|
p2p_parse_free(&msg);
|
|
|
|
|
|
|
|
if (dev->go_state == UNKNOWN_GO) {
|
|
|
|
/*
|
|
|
|
* This should not happen since GO negotiation has already
|
|
|
|
* been completed.
|
|
|
|
*/
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "Unexpected GO Neg state - do not know which end becomes GO");
|
2010-07-18 17:30:25 -04:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2012-10-13 10:33:16 -04:00
|
|
|
/*
|
|
|
|
* The peer could have missed our ctrl::ack frame for GO Negotiation
|
|
|
|
* Confirm and continue retransmitting the frame. To reduce the
|
|
|
|
* likelihood of the peer not getting successful TX status for the
|
|
|
|
* GO Negotiation Confirm frame, wait a short time here before starting
|
|
|
|
* the group so that we will remain on the current channel to
|
|
|
|
* acknowledge any possible retransmission from the peer.
|
|
|
|
*/
|
2013-05-18 11:47:36 -04:00
|
|
|
p2p_dbg(p2p, "20 ms wait on current channel before starting group");
|
2012-10-13 10:33:16 -04:00
|
|
|
os_sleep(0, 20000);
|
|
|
|
|
2010-07-18 17:30:25 -04:00
|
|
|
p2p_go_complete(p2p, dev);
|
|
|
|
}
|