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SAE: Centralize function for sending initial COMMIT

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When performing SAE authentication in mesh, one station may
initiate authentication by sending a COMMIT as soon as a peer
candidate is discovered. Previously we did this in mesh_rsn.c,
but this left some of the state initialization in a different
part of the code from the rest of the state machine, and we may
need to add other initializations here in the future, so move
that to a more central function.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
This commit is contained in:
Bob Copeland 2015-01-07 01:10:56 -05:00 • committed by Jouni Malinen
parent 28c91ee124
commit a206e2a175
3 changed files with 48 additions and 74 deletions
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31
src/ap/ieee802_11.c
View file

@ -755,6 +755,37 @@ reply:
}
wpabuf_free(data);
}
/**
* auth_sae_init_committed - Send COMMIT and start SAE in committed state
* @hapd: BSS data for the device initiating the authentication
* @sta: the peer to which commit authentication frame is sent
*
* This function implements Init event handling (IEEE Std 802.11-2012,
* 11.3.8.6.3) in which initial COMMIT message is sent. Prior to calling, the
* sta->sae structure should be initialized appropriately via a call to
* sae_prepare_commit().
*/
int auth_sae_init_committed(struct hostapd_data *hapd, struct sta_info *sta)
{
int ret;
if (!sta->sae || !sta->sae->tmp)
return -1;
if (sta->sae->state != SAE_NOTHING)
return -1;
ret = auth_sae_send_commit(hapd, sta, hapd->own_addr, 0);
if (ret)
return -1;
sta->sae->state = SAE_COMMITTED;
return 0;
}
#endif /* CONFIG_SAE */

2
src/ap/ieee802_11.h
View file

@ -89,4 +89,6 @@ int hostapd_update_time_adv(struct hostapd_data *hapd);
void hostapd_client_poll_ok(struct hostapd_data *hapd, const u8 *addr);
u8 * hostapd_eid_bss_max_idle_period(struct hostapd_data *hapd, u8 *eid);
int auth_sae_init_committed(struct hostapd_data *hapd, struct sta_info *sta);
#endif /* IEEE802_11_H */