[SCTP]: Implement the receive and verification of AUTH chunk

This patch implements the receive path needed to process authenticated
chunks.  Add ability to process the AUTH chunk and handle edge cases
for authenticated COOKIE-ECHO as well.

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

1 files changed, 3 insertions, 1 deletions

diff --git a/include/net/sctp/constants.h b/include/net/sctp/constants.h
index 777118f06dba..da8354e8e33c 100644
--- a/include/net/sctp/constants.h
+++ b/include/net/sctp/constants.h
@@ -183,7 +183,9 @@ typedef enum {
         SCTP_IERROR_NO_DATA,
         SCTP_IERROR_BAD_STREAM,
         SCTP_IERROR_BAD_PORTS,
-
+        SCTP_IERROR_AUTH_BAD_HMAC,
+        SCTP_IERROR_AUTH_BAD_KEYID,
+        SCTP_IERROR_PROTO_VIOLATION,
 } sctp_ierror_t;