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[SCTP]: Implete SCTP-AUTH parameter processing

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Implement processing for the CHUNKS, RANDOM, and HMAC parameters and
deal with how this parameters are effected by association restarts.
In particular, during unexpeted INIT processing, we need to reply with
parameters from the original INIT chunk.  Also, after restart, we need
to update the old association with new peer parameters and change the
association shared keys.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vlad Yasevich
2007-09-16 19:32:11 -07:00
committed by David S. Miller
parent a29a5bd4f5
commit 730fc3d05c
5 changed files with 220 additions and 4 deletions
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21
net/sctp/associola.c
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@@ -415,6 +415,9 @@ void sctp_association_free(struct sctp_association *asoc)
/* Free peer's cached cookie. */
kfree(asoc->peer.cookie);
kfree(asoc->peer.peer_random);
kfree(asoc->peer.peer_chunks);
kfree(asoc->peer.peer_hmacs);
/* Release the transport structures. */
list_for_each_safe(pos, temp, &asoc->peer.transport_addr_list) {
@@ -1145,7 +1148,23 @@ void sctp_assoc_update(struct sctp_association *asoc,
}
}
/* SCTP-AUTH: XXX something needs to be done here*/
/* SCTP-AUTH: Save the peer parameters from the new assocaitions
* and also move the association shared keys over
*/
kfree(asoc->peer.peer_random);
asoc->peer.peer_random = new->peer.peer_random;
new->peer.peer_random = NULL;
kfree(asoc->peer.peer_chunks);
asoc->peer.peer_chunks = new->peer.peer_chunks;
new->peer.peer_chunks = NULL;
kfree(asoc->peer.peer_hmacs);
asoc->peer.peer_hmacs = new->peer.peer_hmacs;
new->peer.peer_hmacs = NULL;
sctp_auth_key_put(asoc->asoc_shared_key);
sctp_auth_asoc_init_active_key(asoc, GFP_ATOMIC);
}
/* Update the retran path for sending a retransmitted packet.