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hostapd/src/p2p/p2p_i.h
Jouni Malinen c98b83f2d3 P2P: Do not update peer Listen channel based on PD/Invitation 
Commits 17bef1e97a and
ffe98dfb88 started using p2p_add_device()
with other frames than just Probe Response frames from scan results.
However, these changes did not take into account that the PD Request
and Invitation Request frames are normally received on the our own
Listen channel, not on the Listen channel of the peer. As such, these
frames must not be used to update Listen channel information for the
peer.

Fix this by letting p2p_add_device() know whether the results are from
scan results and if not, skip the peer table updates that are specific
to Probe Response frames.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
intended-for: hostap-1
2012-04-26 16:11:17 +03:00

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/*
* 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;
/**
* 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, int 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);
u16 p2p_wps_method_pw_id(enum p2p_wps_method wps_method);
/* 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, int scan_res);
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);
void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq);
#endif /* P2P_I_H */
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