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authorVlad Yasevich <vladislav.yasevich@hp.com>2007-09-17 06:31:35 +0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-11 03:51:30 +0400
commita29a5bd4f5c3e8ba2e89688feab8b01c44f1654f (patch)
tree2b98f0d572fee7dff79373c64f95a61f940db7e9 /net/sctp/associola.c
parent1f485649f52929d9937b346a920a522a7363e202 (diff)
downloadlinux-a29a5bd4f5c3e8ba2e89688feab8b01c44f1654f.tar.xz
[SCTP]: Implement SCTP-AUTH initializations.
The patch initializes AUTH related members of the generic SCTP structures and provides a way to enable/disable auth extension. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/associola.c')
-rw-r--r--net/sctp/associola.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index 9bad8ba0feda..ee4b212e66b1 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -74,6 +74,8 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
{
struct sctp_sock *sp;
int i;
+ sctp_paramhdr_t *p;
+ int err;
/* Retrieve the SCTP per socket area. */
sp = sctp_sk((struct sock *)sk);
@@ -298,6 +300,30 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
asoc->default_timetolive = sp->default_timetolive;
asoc->default_rcv_context = sp->default_rcv_context;
+ /* AUTH related initializations */
+ INIT_LIST_HEAD(&asoc->endpoint_shared_keys);
+ err = sctp_auth_asoc_copy_shkeys(ep, asoc, gfp);
+ if (err)
+ goto fail_init;
+
+ asoc->active_key_id = ep->active_key_id;
+ asoc->asoc_shared_key = NULL;
+
+ asoc->default_hmac_id = 0;
+ /* Save the hmacs and chunks list into this association */
+ if (ep->auth_hmacs_list)
+ memcpy(asoc->c.auth_hmacs, ep->auth_hmacs_list,
+ ntohs(ep->auth_hmacs_list->param_hdr.length));
+ if (ep->auth_chunk_list)
+ memcpy(asoc->c.auth_chunks, ep->auth_chunk_list,
+ ntohs(ep->auth_chunk_list->param_hdr.length));
+
+ /* Get the AUTH random number for this association */
+ p = (sctp_paramhdr_t *)asoc->c.auth_random;
+ p->type = SCTP_PARAM_RANDOM;
+ p->length = htons(sizeof(sctp_paramhdr_t) + SCTP_AUTH_RANDOM_LENGTH);
+ get_random_bytes(p+1, SCTP_AUTH_RANDOM_LENGTH);
+
return asoc;
fail_init:
@@ -407,6 +433,12 @@ void sctp_association_free(struct sctp_association *asoc)
if (asoc->addip_last_asconf)
sctp_chunk_free(asoc->addip_last_asconf);
+ /* AUTH - Free the endpoint shared keys */
+ sctp_auth_destroy_keys(&asoc->endpoint_shared_keys);
+
+ /* AUTH - Free the association shared key */
+ sctp_auth_key_put(asoc->asoc_shared_key);
+
sctp_association_put(asoc);
}
@@ -1112,6 +1144,8 @@ void sctp_assoc_update(struct sctp_association *asoc,
sctp_assoc_set_id(asoc, GFP_ATOMIC);
}
}
+
+ /* SCTP-AUTH: XXX something needs to be done here*/
}
/* Update the retran path for sending a retransmitted packet.