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341 lines
9.2 KiB
C
341 lines
9.2 KiB
C
/*
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* IEEE 802.11 Common routines
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* Copyright (c) 2002-2019, Jouni Malinen <j@w1.fi>
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*
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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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*/
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#ifndef IEEE802_11_COMMON_H
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#define IEEE802_11_COMMON_H
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#include "defs.h"
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#include "ieee802_11_defs.h"
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struct element {
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u8 id;
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u8 datalen;
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u8 data[];
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} STRUCT_PACKED;
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struct hostapd_hw_modes;
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#define MAX_NOF_MB_IES_SUPPORTED 5
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#define MAX_NUM_FRAG_IES_SUPPORTED 3
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struct mb_ies_info {
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struct {
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const u8 *ie;
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u8 ie_len;
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} ies[MAX_NOF_MB_IES_SUPPORTED];
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u8 nof_ies;
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};
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struct frag_ies_info {
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struct {
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u8 eid;
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u8 eid_ext;
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const u8 *ie;
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u8 ie_len;
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} frags[MAX_NUM_FRAG_IES_SUPPORTED];
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u8 n_frags;
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/* the last parsed element ID and element extension ID */
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u8 last_eid;
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u8 last_eid_ext;
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};
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/* Parsed Information Elements */
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struct ieee802_11_elems {
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const u8 *ssid;
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const u8 *supp_rates;
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const u8 *ds_params;
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const u8 *challenge;
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const u8 *erp_info;
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const u8 *ext_supp_rates;
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const u8 *wpa_ie;
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const u8 *rsn_ie;
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const u8 *rsnxe;
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const u8 *wmm; /* WMM Information or Parameter Element */
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const u8 *wmm_tspec;
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const u8 *wps_ie;
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const u8 *supp_channels;
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const u8 *mdie;
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const u8 *ftie;
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const u8 *timeout_int;
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const u8 *ht_capabilities;
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const u8 *ht_operation;
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const u8 *mesh_config;
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const u8 *mesh_id;
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const u8 *peer_mgmt;
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const u8 *vht_capabilities;
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const u8 *vht_operation;
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const u8 *vht_opmode_notif;
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const u8 *vendor_ht_cap;
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const u8 *vendor_vht;
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const u8 *p2p;
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const u8 *wfd;
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const u8 *link_id;
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const u8 *interworking;
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const u8 *qos_map_set;
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const u8 *hs20;
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const u8 *ext_capab;
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const u8 *bss_max_idle_period;
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const u8 *ssid_list;
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const u8 *osen;
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const u8 *mbo;
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const u8 *ampe;
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const u8 *mic;
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const u8 *pref_freq_list;
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const u8 *supp_op_classes;
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const u8 *rrm_enabled;
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const u8 *cag_number;
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const u8 *ap_csn;
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const u8 *fils_indic;
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const u8 *dils;
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const u8 *assoc_delay_info;
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const u8 *fils_req_params;
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const u8 *fils_key_confirm;
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const u8 *fils_session;
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const u8 *fils_hlp;
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const u8 *fils_ip_addr_assign;
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const u8 *key_delivery;
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const u8 *wrapped_data;
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const u8 *fils_pk;
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const u8 *fils_nonce;
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const u8 *owe_dh;
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const u8 *power_capab;
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const u8 *roaming_cons_sel;
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const u8 *password_id;
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const u8 *oci;
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const u8 *multi_ap;
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const u8 *he_capabilities;
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const u8 *he_operation;
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const u8 *short_ssid_list;
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const u8 *he_6ghz_band_cap;
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const u8 *sae_pk;
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const u8 *s1g_capab;
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const u8 *pasn_params;
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u8 ssid_len;
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u8 supp_rates_len;
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u8 challenge_len;
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u8 ext_supp_rates_len;
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u8 wpa_ie_len;
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u8 rsn_ie_len;
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u8 rsnxe_len;
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u8 wmm_len; /* 7 = WMM Information; 24 = WMM Parameter */
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u8 wmm_tspec_len;
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u8 wps_ie_len;
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u8 supp_channels_len;
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u8 mdie_len;
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u8 ftie_len;
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u8 mesh_config_len;
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u8 mesh_id_len;
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u8 peer_mgmt_len;
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u8 vendor_ht_cap_len;
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u8 vendor_vht_len;
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u8 p2p_len;
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u8 wfd_len;
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u8 interworking_len;
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u8 qos_map_set_len;
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u8 hs20_len;
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u8 ext_capab_len;
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u8 ssid_list_len;
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u8 osen_len;
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u8 mbo_len;
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u8 ampe_len;
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u8 mic_len;
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u8 pref_freq_list_len;
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u8 supp_op_classes_len;
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u8 rrm_enabled_len;
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u8 cag_number_len;
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u8 fils_indic_len;
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u8 dils_len;
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u8 fils_req_params_len;
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u8 fils_key_confirm_len;
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u8 fils_hlp_len;
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u8 fils_ip_addr_assign_len;
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u8 key_delivery_len;
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u8 wrapped_data_len;
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u8 fils_pk_len;
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u8 owe_dh_len;
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u8 power_capab_len;
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u8 roaming_cons_sel_len;
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u8 password_id_len;
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u8 oci_len;
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u8 multi_ap_len;
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u8 he_capabilities_len;
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u8 he_operation_len;
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u8 short_ssid_list_len;
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u8 sae_pk_len;
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u8 pasn_params_len;
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struct mb_ies_info mb_ies;
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struct frag_ies_info frag_ies;
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};
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typedef enum { ParseOK = 0, ParseUnknown = 1, ParseFailed = -1 } ParseRes;
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ParseRes ieee802_11_parse_elems(const u8 *start, size_t len,
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struct ieee802_11_elems *elems,
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int show_errors);
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int ieee802_11_ie_count(const u8 *ies, size_t ies_len);
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struct wpabuf * ieee802_11_vendor_ie_concat(const u8 *ies, size_t ies_len,
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u32 oui_type);
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struct ieee80211_hdr;
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const u8 * get_hdr_bssid(const struct ieee80211_hdr *hdr, size_t len);
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struct hostapd_wmm_ac_params {
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int cwmin;
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int cwmax;
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int aifs;
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int txop_limit; /* in units of 32us */
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int admission_control_mandatory;
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};
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int hostapd_config_wmm_ac(struct hostapd_wmm_ac_params wmm_ac_params[],
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const char *name, const char *val);
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struct hostapd_tx_queue_params {
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int aifs;
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int cwmin;
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int cwmax;
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int burst; /* maximum burst time in 0.1 ms, i.e., 10 = 1 ms */
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};
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#define NUM_TX_QUEUES 4
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int hostapd_config_tx_queue(struct hostapd_tx_queue_params queue[],
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const char *name, const char *val);
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enum hostapd_hw_mode ieee80211_freq_to_chan(int freq, u8 *channel);
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int ieee80211_chan_to_freq(const char *country, u8 op_class, u8 chan);
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enum hostapd_hw_mode ieee80211_freq_to_channel_ext(unsigned int freq,
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int sec_channel, int vht,
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u8 *op_class, u8 *channel);
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int ieee80211_chaninfo_to_channel(unsigned int freq, enum chan_width chanwidth,
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int sec_channel, u8 *op_class, u8 *channel);
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int ieee80211_is_dfs(int freq, const struct hostapd_hw_modes *modes,
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u16 num_modes);
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enum phy_type ieee80211_get_phy_type(int freq, int ht, int vht);
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int supp_rates_11b_only(struct ieee802_11_elems *elems);
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int mb_ies_info_by_ies(struct mb_ies_info *info, const u8 *ies_buf,
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size_t ies_len);
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struct wpabuf * mb_ies_by_info(struct mb_ies_info *info);
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const char * fc2str(u16 fc);
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const char * reason2str(u16 reason);
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const char * status2str(u16 status);
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struct oper_class_map {
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enum hostapd_hw_mode mode;
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u8 op_class;
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u8 min_chan;
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u8 max_chan;
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u8 inc;
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enum { BW20, BW40PLUS, BW40MINUS, BW40, BW80, BW2160, BW160, BW80P80,
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BW4320, BW6480, BW8640} bw;
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enum { P2P_SUPP, NO_P2P_SUPP } p2p;
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};
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extern const struct oper_class_map global_op_class[];
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extern size_t global_op_class_size;
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const u8 * get_ie(const u8 *ies, size_t len, u8 eid);
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const u8 * get_ie_ext(const u8 *ies, size_t len, u8 ext);
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const u8 * get_vendor_ie(const u8 *ies, size_t len, u32 vendor_type);
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size_t mbo_add_ie(u8 *buf, size_t len, const u8 *attr, size_t attr_len);
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size_t add_multi_ap_ie(u8 *buf, size_t len, u8 value);
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struct country_op_class {
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u8 country_op_class;
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u8 global_op_class;
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};
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u8 country_to_global_op_class(const char *country, u8 op_class);
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const struct oper_class_map * get_oper_class(const char *country, u8 op_class);
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int oper_class_bw_to_int(const struct oper_class_map *map);
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int center_idx_to_bw_6ghz(u8 idx);
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bool is_6ghz_freq(int freq);
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bool is_6ghz_op_class(u8 op_class);
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bool is_6ghz_psc_frequency(int freq);
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int ieee802_11_parse_candidate_list(const char *pos, u8 *nei_rep,
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size_t nei_rep_len);
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int ieee802_11_ext_capab(const u8 *ie, unsigned int capab);
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bool ieee802_11_rsnx_capab_len(const u8 *rsnxe, size_t rsnxe_len,
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unsigned int capab);
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bool ieee802_11_rsnx_capab(const u8 *rsnxe, unsigned int capab);
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int op_class_to_bandwidth(u8 op_class);
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int op_class_to_ch_width(u8 op_class);
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/* element iteration helpers */
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#define for_each_element(_elem, _data, _datalen) \
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for (_elem = (const struct element *) (_data); \
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(const u8 *) (_data) + (_datalen) - (const u8 *) _elem >= \
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(int) sizeof(*_elem) && \
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(const u8 *) (_data) + (_datalen) - (const u8 *) _elem >= \
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(int) sizeof(*_elem) + _elem->datalen; \
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_elem = (const struct element *) (_elem->data + _elem->datalen))
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#define for_each_element_id(element, _id, data, datalen) \
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for_each_element(element, data, datalen) \
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if (element->id == (_id))
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#define for_each_element_extid(element, extid, _data, _datalen) \
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for_each_element(element, _data, _datalen) \
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if (element->id == WLAN_EID_EXTENSION && \
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element->datalen > 0 && \
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element->data[0] == (extid))
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#define for_each_subelement(sub, element) \
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for_each_element(sub, (element)->data, (element)->datalen)
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#define for_each_subelement_id(sub, id, element) \
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for_each_element_id(sub, id, (element)->data, (element)->datalen)
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#define for_each_subelement_extid(sub, extid, element) \
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for_each_element_extid(sub, extid, (element)->data, (element)->datalen)
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/**
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* for_each_element_completed - Determine if element parsing consumed all data
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* @element: Element pointer after for_each_element() or friends
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* @data: Same data pointer as passed to for_each_element() or friends
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* @datalen: Same data length as passed to for_each_element() or friends
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*
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* This function returns 1 if all the data was parsed or considered
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* while walking the elements. Only use this if your for_each_element()
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* loop cannot be broken out of, otherwise it always returns 0.
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*
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* If some data was malformed, this returns %false since the last parsed
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* element will not fill the whole remaining data.
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*/
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static inline int for_each_element_completed(const struct element *element,
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const void *data, size_t datalen)
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{
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return (const u8 *) element == (const u8 *) data + datalen;
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}
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struct ieee80211_edmg_config;
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void hostapd_encode_edmg_chan(int edmg_enable, u8 edmg_channel,
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int primary_channel,
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struct ieee80211_edmg_config *edmg);
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int ieee802_edmg_is_allowed(struct ieee80211_edmg_config allowed,
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struct ieee80211_edmg_config requested);
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struct wpabuf * ieee802_11_defrag_data(struct ieee802_11_elems *elems,
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u8 eid, u8 eid_ext,
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const u8 *data, u8 len);
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struct wpabuf * ieee802_11_defrag(struct ieee802_11_elems *elems,
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u8 eid, u8 eid_ext);
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#endif /* IEEE802_11_COMMON_H */
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