Add various socket option names.
diff --git a/usrsctplib/usrsctp.h b/usrsctplib/usrsctp.h
index 25d087d..0533c49 100644
--- a/usrsctplib/usrsctp.h
+++ b/usrsctplib/usrsctp.h
@@ -549,6 +549,14 @@
 #define SCTP_DEFAULT_SNDINFO            0x00000021
 #define SCTP_DEFAULT_PRINFO             0x00000022
 #define SCTP_REMOTE_UDP_ENCAPS_PORT     0x00000024
+#define SCTP_ECN_SUPPORTED              0x00000025
+#define SCTP_PR_SUPPORTED               0x00000026
+#define SCTP_AUTH_SUPPORTED             0x00000027
+#define SCTP_ASCONF_SUPPORTED           0x00000028
+#define SCTP_RECONFIG_SUPPORTED         0x00000029
+#define SCTP_NRSACK_SUPPORTED           0x00000030
+#define SCTP_PKTDROP_SUPPORTED          0x00000031
+#define SCTP_MAX_CWND                   0x00000032
 
 #define SCTP_ENABLE_STREAM_RESET        0x00000900 /* struct sctp_assoc_value */