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4d77d80edd
These commnds are mesh version of PMKSA_GET/ADD commands. So the usage
and security risk is similar to them. Refer to
commit 3459381dd2 ('External persistent
storage for PMKSA cache entries') also.
The MESH_PMKSA_GET command requires peer MAC address or "any" as an
argument and outputs appropriate stored PMKSA cache. And the
MESH_PMKSA_ADD command receives an output of MESH_PMKSA_GET and re-store
the PMKSA cache into wpa_supplicant. By using re-stored PMKSA cache,
wpa_supplicant can skip commit message creation which can use
significant CPU resources.
The output of the MESH_PMKSA_GET command uses the following format:
<BSSID> <PMKID> <PMK> <expiration in seconds>
The example of MESH_PMKSA_ADD command is this.
MESH_PMKSA_ADD 02:00:00:00:03:00 231dc1c9fa2eed0354ea49e8ff2cc2dc cb0f6c9cab358a8146488566ca155421ab4f3ea4a6de2120050c149b797018fe 42930
MESH_PMKSA_ADD 02:00:00:00:04:00 d7e595916611640d3e4e8eac02909c3c eb414a33c74831275f25c2357b3c12e3d8bd2f2aab6cf781d6ade706be71321a 43180
This functionality is disabled by default and can be enabled with
CONFIG_PMKSA_CACHE_EXTERNAL=y build configuration option.
Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
79 lines
2.7 KiB
C
79 lines
2.7 KiB
C
/*
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* hostapd - PMKSA cache for IEEE 802.11i RSN
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* Copyright (c) 2004-2008, 2012, 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 PMKSA_CACHE_H
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#define PMKSA_CACHE_H
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#include "radius/radius.h"
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/**
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* struct rsn_pmksa_cache_entry - PMKSA cache entry
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*/
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struct rsn_pmksa_cache_entry {
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struct rsn_pmksa_cache_entry *next, *hnext;
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u8 pmkid[PMKID_LEN];
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u8 pmk[PMK_LEN_MAX];
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size_t pmk_len;
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os_time_t expiration;
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int akmp; /* WPA_KEY_MGMT_* */
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u8 spa[ETH_ALEN];
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u8 *identity;
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size_t identity_len;
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struct wpabuf *cui;
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struct radius_class_data radius_class;
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u8 eap_type_authsrv;
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struct vlan_description *vlan_desc;
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int opportunistic;
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u64 acct_multi_session_id;
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};
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struct rsn_pmksa_cache;
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struct rsn_pmksa_cache *
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pmksa_cache_auth_init(void (*free_cb)(struct rsn_pmksa_cache_entry *entry,
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void *ctx), void *ctx);
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void pmksa_cache_auth_deinit(struct rsn_pmksa_cache *pmksa);
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struct rsn_pmksa_cache_entry *
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pmksa_cache_auth_get(struct rsn_pmksa_cache *pmksa,
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const u8 *spa, const u8 *pmkid);
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struct rsn_pmksa_cache_entry * pmksa_cache_get_okc(
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struct rsn_pmksa_cache *pmksa, const u8 *spa, const u8 *aa,
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const u8 *pmkid);
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struct rsn_pmksa_cache_entry *
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pmksa_cache_auth_add(struct rsn_pmksa_cache *pmksa,
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const u8 *pmk, size_t pmk_len, const u8 *pmkid,
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const u8 *kck, size_t kck_len,
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const u8 *aa, const u8 *spa, int session_timeout,
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struct eapol_state_machine *eapol, int akmp);
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struct rsn_pmksa_cache_entry *
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pmksa_cache_auth_create_entry(const u8 *pmk, size_t pmk_len, const u8 *pmkid,
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const u8 *kck, size_t kck_len, const u8 *aa,
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const u8 *spa, int session_timeout,
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struct eapol_state_machine *eapol, int akmp);
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int pmksa_cache_auth_add_entry(struct rsn_pmksa_cache *pmksa,
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struct rsn_pmksa_cache_entry *entry);
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struct rsn_pmksa_cache_entry *
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pmksa_cache_add_okc(struct rsn_pmksa_cache *pmksa,
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const struct rsn_pmksa_cache_entry *old_entry,
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const u8 *aa, const u8 *pmkid);
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void pmksa_cache_to_eapol_data(struct hostapd_data *hapd,
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struct rsn_pmksa_cache_entry *entry,
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struct eapol_state_machine *eapol);
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void pmksa_cache_free_entry(struct rsn_pmksa_cache *pmksa,
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struct rsn_pmksa_cache_entry *entry);
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int pmksa_cache_auth_radius_das_disconnect(struct rsn_pmksa_cache *pmksa,
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struct radius_das_attrs *attr);
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int pmksa_cache_auth_list(struct rsn_pmksa_cache *pmksa, char *buf, size_t len);
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void pmksa_cache_auth_flush(struct rsn_pmksa_cache *pmksa);
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int pmksa_cache_auth_list_mesh(struct rsn_pmksa_cache *pmksa, const u8 *addr,
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char *buf, size_t len);
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#endif /* PMKSA_CACHE_H */
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