[SCTP]: API updates to suport SCTP-AUTH extensions.

Add SCTP-AUTH API.  The API implemented here was
agreed to between implementors at the 9th SCTP Interop.
It will be documented in the next revision of the
SCTP socket API spec.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 13 insertions, 0 deletions

diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index 5aef4aafdfdc..f01b408508ff 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -3848,6 +3848,19 @@ sctp_disposition_t sctp_sf_eat_auth(const struct sctp_endpoint *ep,
                         break;
         }
 
+        if (asoc->active_key_id != ntohs(auth_hdr->shkey_id)) {
+                struct sctp_ulpevent *ev;
+
+                ev = sctp_ulpevent_make_authkey(asoc, ntohs(auth_hdr->shkey_id),
+                                    SCTP_AUTH_NEWKEY, GFP_ATOMIC);
+
+                if (!ev)
+                        return -ENOMEM;
+
+                sctp_add_cmd_sf(commands, SCTP_CMD_EVENT_ULP,
+                                SCTP_ULPEVENT(ev));
+        }
+
         return SCTP_DISPOSITION_CONSUME;
 }