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mka: Remember LowestPN for each key server 

According IEEE Std 802.1X-2010, 9.8 each participant shall record the
values of NextPN for last SAK accepted from each Key Server to use it in
case of a switch from one Key Server to another and back. Add LPN
recording and set saved value as the initial PN for the created channel.

Signed-off-by: Andrey Kartashev <andrey.kartashev@afconsult.com>
This commit is contained in:
Andrey Kartashev 2018-11-02 19:02:17 +01:00 committed by Jouni Malinen
parent 54c6a69952
commit c9c93e7a24
1 changed files with 6 additions and 1 deletions
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7
src/pae/ieee802_1x_kay.c
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@ -1435,6 +1435,8 @@ ieee802_1x_mka_decode_sak_use_body(
}
}
if (sa_key)
sa_key->next_pn = lpn;
found = FALSE;
dl_list_for_each(rxsc, &participant->rxsc_list, struct receive_sc,
list) {
@ -1568,6 +1570,7 @@ static void ieee802_1x_kay_init_data_key(struct data_key *pkey)
pkey->receives = TRUE;
os_get_time(&pkey->created_time);
pkey->next_pn = 1;
pkey->user = 1;
}
@ -2784,7 +2787,9 @@ int ieee802_1x_kay_create_sas(struct ieee802_1x_kay *kay,
ieee802_1x_delete_transmit_sa(kay, txsa);
txsa = ieee802_1x_kay_init_transmit_sa(principal->txsc, latest_sak->an,
1, latest_sak);
latest_sak->next_pn ?
latest_sak->next_pn : 1,
latest_sak);
if (!txsa)
return -1;