/*
* P2P - Internal definitions for P2P module
* Copyright (c) 2009-2010, Atheros Communications
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#ifndef P2P_I_H
#define P2P_I_H
#include "utils/list.h"
#include "p2p.h"
enum p2p_go_state {
UNKNOWN_GO,
LOCAL_GO,
REMOTE_GO
};
/**
* struct p2p_device - P2P Device data (internal to P2P module)
*/
struct p2p_device {
struct dl_list list;
struct os_time last_seen;
int listen_freq;
enum p2p_wps_method wps_method;
struct p2p_peer_info info;
/*
* If the peer was discovered based on an interface address (e.g., GO
* from Beacon/Probe Response), the interface address is stored here.
* p2p_device_addr must still be set in such a case to the unique
* identifier for the P2P Device.
*/
u8 interface_addr[ETH_ALEN];
/*
* P2P Device Address of the GO in whose group this P2P Device is a
* client.
*/
u8 member_in_go_dev[ETH_ALEN];
/*
* P2P Interface Address of the GO in whose group this P2P Device is a
* client.
*/
u8 member_in_go_iface[ETH_ALEN];
int go_neg_req_sent;
enum p2p_go_state go_state;
u8 dialog_token;
u8 intended_addr[ETH_ALEN];
char country[3];
struct p2p_channels channels;
int oper_freq;
u8 oper_ssid[32];
size_t oper_ssid_len;
/**
* req_config_methods - Pending provision discovery methods
*/
u16 req_config_methods;
/**
* wps_prov_info - Stored provisioning WPS config method
*
* This is used to store pending WPS config method between Provisioning
* Discovery and connection to a running group.
*/
u16 wps_prov_info;
#define P2P_DEV_PROBE_REQ_ONLY BIT(0)
#define P2P_DEV_REPORTED BIT(1)
#define P2P_DEV_NOT_YET_READY BIT(2)
#define P2P_DEV_SD_INFO BIT(3)
#define P2P_DEV_SD_SCHEDULE BIT(4)
#define P2P_DEV_PD_PEER_DISPLAY BIT(5)
#define P2P_DEV_PD_PEER_KEYPAD BIT(6)
#define P2P_DEV_USER_REJECTED BIT(7)
#define P2P_DEV_PEER_WAITING_RESPONSE BIT(8)
#define P2P_DEV_PREFER_PERSISTENT_GROUP BIT(9)
#define P2P_DEV_WAIT_GO_NEG_RESPONSE BIT(10)
#define P2P_DEV_WAIT_GO_NEG_CONFIRM BIT(11)
#define P2P_DEV_GROUP_CLIENT_ONLY BIT(12)
#define P2P_DEV_FORCE_FREQ BIT(13)
#define P2P_DEV_PD_FOR_JOIN BIT(14)
#define P2P_DEV_REPORTED_ONCE BIT(15)
#define P2P_DEV_PREFER_PERSISTENT_RECONN BIT(16)
unsigned int flags;
int status; /* enum p2p_status_code */
unsigned int wait_count;
unsigned int connect_reqs;
unsigned int invitation_reqs;
u16 ext_listen_period;
u16 ext_listen_interval;
u8 go_timeout;
u8 client_timeout;
};
struct p2p_sd_query {
struct p2p_sd_query *next;
u8 peer[ETH_ALEN];
int for_all_peers;
struct wpabuf *tlvs;
};
struct p2p_pending_action_tx {
unsigned int freq;
u8 dst[ETH_ALEN];
u8 src[ETH_ALEN];
u8 bssid[ETH_ALEN];
size_t len;
unsigned int wait_time;
/* Followed by len octets of the frame */
};
/**
* struct p2p_data - P2P module data (internal to P2P module)
*/
struct p2p_data {
/**
* cfg - P2P module configuration
*
* This is included in the same memory allocation with the
* struct p2p_data and as such, must not be freed separately.
*/
struct p2p_config *cfg;
/**
* state - The current P2P state
*/
enum p2p_state {
/**
* P2P_IDLE - Idle
*/
P2P_IDLE,
/**
* P2P_SEARCH - Search (Device Discovery)
*/
P2P_SEARCH,
/**
* P2P_CONNECT - Trying to start GO Negotiation
*/
P2P_CONNECT,
/**
* P2P_CONNECT_LISTEN - Listen during GO Negotiation start
*/
P2P_CONNECT_LISTEN,
/**
* P2P_GO_NEG - In GO Negotiation
*/
P2P_GO_NEG,
/**
* P2P_LISTEN_ONLY - Listen only
*/
P2P_LISTEN_ONLY,
/**
* P2P_WAIT_PEER_CONNECT - Waiting peer in List for GO Neg
*/
P2P_WAIT_PEER_CONNECT,
/**
* P2P_WAIT_PEER_IDLE - Waiting peer idle for GO Neg
*/
P2P_WAIT_PEER_IDLE,
/**
* P2P_SD_DURING_FIND - Service Discovery during find
*/
P2P_SD_DURING_FIND,
/**
* P2P_PROVISIONING - Provisioning (during group formation)
*/
P2P_PROVISIONING,
/**
* P2P_PD_DURING_FIND - Provision Discovery during find
*/
P2P_PD_DURING_FIND,
/**
* P2P_INVITE - Trying to start Invite
*/
P2P_INVITE,
/**
* P2P_INVITE_LISTEN - Listen during Invite
*/
P2P_INVITE_LISTEN,
/**
* P2P_SEARCH_WHEN_READY - Waiting to start Search
*/
P2P_SEARCH_WHEN_READY,
} state;
/**
* min_disc_int - minDiscoverableInterval
*/
int min_disc_int;
/**
* max_disc_int - maxDiscoverableInterval
*/
int max_disc_int;
/**
* devices - List of known P2P Device peers
*/
struct dl_list devices;
#ifdef ANDROID_P2P
/**
* sd_dev_list - device pointer to be serviced next
* for service discovery
*/
struct dl_list *sd_dev_list;
#endif
/**
* go_neg_peer - Pointer to GO Negotiation peer
*/
struct p2p_device *go_neg_peer;
/**
* invite_peer - Pointer to Invite peer
*/
struct p2p_device *invite_peer;
const u8 *invite_go_dev_addr;
u8 invite_go_dev_addr_buf[ETH_ALEN];
/**
* sd_peer - Pointer to Service Discovery peer
*/
struct p2p_device *sd_peer;
/**
* sd_query - Pointer to Service Discovery query
*/
struct p2p_sd_query *sd_query;
/* GO Negotiation data */
/**
* intended_addr - Local Intended P2P Interface Address
*
* This address is used during group owner negotiation as the Intended
* P2P Interface Address and the group interface will be created with
* address as the local address in case of successfully completed
* negotiation.
*/
u8 intended_addr[ETH_ALEN];
/**
* go_intent - Local GO Intent to be used during GO Negotiation
*/
u8 go_intent;
/**
* next_tie_breaker - Next tie-breaker value to use in GO Negotiation
*/
u8 next_tie_breaker;
/**
* ssid - Selected SSID for GO Negotiation (if local end will be GO)
*/
u8 ssid[32];
/**
* ssid_len - ssid length in octets
*/
size_t ssid_len;
/**
* ssid_set - Whether SSID is already set for GO Negotiation
*/
int ssid_set;
/**
* Regulatory class for own operational channel
*/
u8 op_reg_class;
/**
* op_channel - Own operational channel
*/
u8 op_channel;
/**
* channels - Own supported regulatory classes and channels
*
* List of supposerted channels per regulatory class. The regulatory
* classes are defined in IEEE Std 802.11-2007 Annex J and the
* numbering of the clases depends on the configured country code.
*/
struct p2p_channels channels;
enum p2p_pending_action_state {
P2P_NO_PENDING_ACTION,
P2P_PENDING_GO_NEG_REQUEST,
P2P_PENDING_GO_NEG_RESPONSE,
P2P_PENDING_GO_NEG_RESPONSE_FAILURE,
P2P_PENDING_GO_NEG_CONFIRM,
P2P_PENDING_SD,
P2P_PENDING_PD,
P2P_PENDING_INVITATION_REQUEST,
P2P_PENDING_INVITATION_RESPONSE,
P2P_PENDING_DEV_DISC_REQUEST,
P2P_PENDING_DEV_DISC_RESPONSE,
P2P_PENDING_GO_DISC_REQ
} pending_action_state;
unsigned int pending_listen_freq;
unsigned int pending_listen_sec;
unsigned int pending_listen_usec;
u8 dev_capab;
int in_listen;
int drv_in_listen;
/**
* sd_queries - Pending service discovery queries
*/
struct p2p_sd_query *sd_queries;
/**
* srv_update_indic - Service Update Indicator for local services
*/
u16 srv_update_indic;
struct wpabuf *sd_resp; /* Fragmented SD response */
u8 sd_resp_addr[ETH_ALEN];
u8 sd_resp_dialog_token;
size_t sd_resp_pos; /* Offset in sd_resp */
u8 sd_frag_id;
struct wpabuf *sd_rx_resp; /* Reassembled SD response */
u16 sd_rx_update_indic;
/* P2P Invitation data */
enum p2p_invite_role inv_role;
u8 inv_bssid[ETH_ALEN];
int inv_bssid_set;
u8 inv_ssid[32];
size_t inv_ssid_len;
u8 inv_sa[ETH_ALEN];
u8 inv_group_bssid[ETH_ALEN];
u8 *inv_group_bssid_ptr;
u8 inv_go_dev_addr[ETH_ALEN];
u8 inv_status;
int inv_op_freq;
int inv_persistent;
enum p2p_discovery_type find_type;
unsigned int last_p2p_find_timeout;
u8 last_prog_scan_class;
u8 last_prog_scan_chan;
int p2p_scan_running;
enum p2p_after_scan {
P2P_AFTER_SCAN_NOTHING,
P2P_AFTER_SCAN_LISTEN,
P2P_AFTER_SCAN_CONNECT
} start_after_scan;
u8 after_scan_peer[ETH_ALEN];
struct p2p_pending_action_tx *after_scan_tx;
/* Requested device types for find/search */
unsigned int num_req_dev_types;
u8 *req_dev_types;
u8 *find_dev_id;
u8 find_dev_id_buf[ETH_ALEN];
struct p2p_group **groups;
size_t num_groups;
struct p2p_device *pending_client_disc_go;
u8 pending_client_disc_addr[ETH_ALEN];
u8 pending_dev_disc_dialog_token;
u8 pending_dev_disc_addr[ETH_ALEN];
int pending_dev_disc_freq;
unsigned int pending_client_disc_freq;
int ext_listen_only;
unsigned int ext_listen_period;
unsigned int ext_listen_interval;
unsigned int ext_listen_interval_sec;
unsigned int ext_listen_interval_usec;
u8 peer_filter[ETH_ALEN];
int cross_connect;
int best_freq_24;
int best_freq_5;
int best_freq_overall;
/**
* wps_vendor_ext - WPS Vendor Extensions to add
*/
struct wpabuf *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
/*
* user_initiated_pd - Whether a PD request is user initiated or not.
*/
u8 user_initiated_pd;
/*
* Keep track of which peer a given PD request was sent to.
* Used to raise a timeout alert in case there is no response.
*/
u8 pending_pd_devaddr[ETH_ALEN];
/*
* Retry counter for provision discovery requests when issued
* in IDLE state.
*/
int pd_retries;
};
/**
* struct p2p_message - Parsed P2P message (or P2P IE)
*/
struct p2p_message {
struct wpabuf *p2p_attributes;
struct wpabuf *wps_attributes;
u8 dialog_token;
const u8 *capability;
const u8 *go_intent;
const u8 *status;
const u8 *listen_channel;
const u8 *operating_channel;
const u8 *channel_list;
u8 channel_list_len;
const u8 *config_timeout;
const u8 *intended_addr;
const u8 *group_bssid;
const u8 *invitation_flags;
const u8 *group_info;
size_t group_info_len;
const u8 *group_id;
size_t group_id_len;
const u8 *device_id;
const u8 *manageability;
const u8 *noa;
size_t noa_len;
const u8 *ext_listen_timing;
const u8 *minor_reason_code;
/* P2P Device Info */
const u8 *p2p_device_info;
size_t p2p_device_info_len;
const u8 *p2p_device_addr;
const u8 *pri_dev_type;
u8 num_sec_dev_types;
char device_name[33];
u16 config_methods;
/* WPS IE */
u16 dev_password_id;
u16 wps_config_methods;
const u8 *wps_pri_dev_type;
const u8 *wps_sec_dev_type_list;
size_t wps_sec_dev_type_list_len;
const u8 *wps_vendor_ext[P2P_MAX_WPS_VENDOR_EXT];
size_t wps_vendor_ext_len[P2P_MAX_WPS_VENDOR_EXT];
const u8 *manufacturer;
size_t manufacturer_len;
const u8 *model_name;
size_t model_name_len;
const u8 *model_number;
size_t model_number_len;
const u8 *serial_number;
size_t serial_number_len;
/* DS Parameter Set IE */
const u8 *ds_params;
/* SSID IE */
const u8 *ssid;
};
#define P2P_MAX_GROUP_ENTRIES 50
struct p2p_group_info {
unsigned int num_clients;
struct p2p_client_info {
const u8 *p2p_device_addr;
const u8 *p2p_interface_addr;
u8 dev_capab;
u16 config_methods;
const u8 *pri_dev_type;
u8 num_sec_dev_types;
const u8 *sec_dev_types;
const char *dev_name;
size_t dev_name_len;
} client[P2P_MAX_GROUP_ENTRIES];
};
/* p2p_utils.c */
int p2p_random(char *buf, size_t len);
int p2p_channel_to_freq(const char *country, int reg_class, int channel);
int p2p_freq_to_channel(const char *country, unsigned int freq, u8 *reg_class,
u8 *channel);
void p2p_channels_intersect(const struct p2p_channels *a,
const struct p2p_channels *b,
struct p2p_channels *res);
int p2p_channels_includes(const struct p2p_channels *channels, u8 reg_class,
u8 channel);
/* p2p_parse.c */
int p2p_parse_p2p_ie(const struct wpabuf *buf, struct p2p_message *msg);
int p2p_parse_ies(const u8 *data, size_t len, struct p2p_message *msg);
int p2p_parse(const u8 *data, size_t len, struct p2p_message *msg);
void p2p_parse_free(struct p2p_message *msg);
int p2p_attr_text(struct wpabuf *data, char *buf, char *end);
int p2p_group_info_parse(const u8 *gi, size_t gi_len,
struct p2p_group_info *info);
/* p2p_build.c */
struct p2p_noa_desc {
u8 count_type;
u32 duration;
u32 interval;
u32 start_time;
};
/* p2p_group.c */
const u8 * p2p_group_get_interface_addr(struct p2p_group *group);
u8 p2p_group_presence_req(struct p2p_group *group,
const u8 *client_interface_addr,
const u8 *noa, size_t noa_len);
void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token);
void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype,
u8 dialog_token);
u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf);
void p2p_buf_add_status(struct wpabuf *buf, u8 status);
void p2p_buf_add_device_info(struct wpabuf *buf, struct p2p_data *p2p,
struct p2p_device *peer);
void p2p_buf_add_device_id(struct wpabuf *buf, const u8 *dev_addr);
void p2p_buf_update_ie_hdr(struct wpabuf *buf, u8 *len);
void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab);
void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent);
void p2p_buf_add_listen_channel(struct wpabuf *buf, const char *country,
u8 reg_class, u8 channel);
void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country,
u8 reg_class, u8 channel);
void p2p_buf_add_channel_list(struct wpabuf *buf, const char *country,
struct p2p_channels *chan);
void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout,
u8 client_timeout);
void p2p_buf_add_intended_addr(struct wpabuf *buf, const u8 *interface_addr);
void p2p_buf_add_group_bssid(struct wpabuf *buf, const u8 *bssid);
void p2p_buf_add_group_id(struct wpabuf *buf, const u8 *dev_addr,
const u8 *ssid, size_t ssid_len);
void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags);
void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow,
struct p2p_noa_desc *desc1, struct p2p_noa_desc *desc2);
void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period,
u16 interval);
void p2p_buf_add_p2p_interface(struct wpabuf *buf, struct p2p_data *p2p);
void p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, u16 pw_id,
int all_attr);
/* p2p_sd.c */
struct p2p_sd_query * p2p_pending_sd_req(struct p2p_data *p2p,
struct p2p_device *dev);
void p2p_free_sd_queries(struct p2p_data *p2p);
void p2p_rx_gas_initial_req(struct p2p_data *p2p, const u8 *sa,
const u8 *data, size_t len, int rx_freq);
void p2p_rx_gas_initial_resp(struct p2p_data *p2p, const u8 *sa,
const u8 *data, size_t len, int rx_freq);
void p2p_rx_gas_comeback_req(struct p2p_data *p2p, const u8 *sa,
const u8 *data, size_t len, int rx_freq);
void p2p_rx_gas_comeback_resp(struct p2p_data *p2p, const u8 *sa,
const u8 *data, size_t len, int rx_freq);
int p2p_start_sd(struct p2p_data *p2p, struct p2p_device *dev);
/* p2p_go_neg.c */
int p2p_peer_channels_check(struct p2p_data *p2p, struct p2p_channels *own,
struct p2p_device *dev,
const u8 *channel_list, size_t channel_list_len);
void p2p_process_go_neg_req(struct p2p_data *p2p, const u8 *sa,
const u8 *data, size_t len, int rx_freq);
void p2p_process_go_neg_resp(struct p2p_data *p2p, const u8 *sa,
const u8 *data, size_t len, int rx_freq);
void p2p_process_go_neg_conf(struct p2p_data *p2p, const u8 *sa,
const u8 *data, size_t len);
int p2p_connect_send(struct p2p_data *p2p, struct p2p_device *dev);
/* p2p_pd.c */
void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa,
const u8 *data, size_t len, int rx_freq);
void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa,
const u8 *data, size_t len);
int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev,
int join, int force_freq);
void p2p_reset_pending_pd(struct p2p_data *p2p);
/* p2p_invitation.c */
void p2p_process_invitation_req(struct p2p_data *p2p, const u8 *sa,
const u8 *data, size_t len, int rx_freq);
void p2p_process_invitation_resp(struct p2p_data *p2p, const u8 *sa,
const u8 *data, size_t len);
int p2p_invite_send(struct p2p_data *p2p, struct p2p_device *dev,
const u8 *go_dev_addr);
void p2p_invitation_req_cb(struct p2p_data *p2p, int success);
void p2p_invitation_resp_cb(struct p2p_data *p2p, int success);
/* p2p_dev_disc.c */
void p2p_process_dev_disc_req(struct p2p_data *p2p, const u8 *sa,
const u8 *data, size_t len, int rx_freq);
void p2p_dev_disc_req_cb(struct p2p_data *p2p, int success);
int p2p_send_dev_disc_req(struct p2p_data *p2p, struct p2p_device *dev);
void p2p_dev_disc_resp_cb(struct p2p_data *p2p, int success);
void p2p_process_dev_disc_resp(struct p2p_data *p2p, const u8 *sa,
const u8 *data, size_t len);
void p2p_go_disc_req_cb(struct p2p_data *p2p, int success);
void p2p_process_go_disc_req(struct p2p_data *p2p, const u8 *da, const u8 *sa,
const u8 *data, size_t len, int rx_freq);
/* p2p.c */
void p2p_set_state(struct p2p_data *p2p, int new_state);
void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec,
unsigned int usec);
void p2p_clear_timeout(struct p2p_data *p2p);
void p2p_continue_find(struct p2p_data *p2p);
struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
const u8 *addr,
struct p2p_message *msg);
void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
struct p2p_device *dev, struct p2p_message *msg);
int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, int level,
const u8 *ies, size_t ies_len);
struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr);
struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
const u8 *addr);
void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
int status);
void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer);
int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps);
int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
size_t num_req_dev_type);
struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p);
void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len);
int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
const u8 *src, const u8 *bssid, const u8 *buf,
size_t len, unsigned int wait_time);
#endif /* P2P_I_H */