net/sctp/structs.h

648 		has_tsn:1,		/* Does this chunk have a TSN yet? */
964 		/* An unsigned integer, which stores the next TSN to be
979 		 * a SACK to estimate the causative TSN(s)'s group.
1069  * It assigns TSN's to data chunks.  This happens at the last possible
1092 	 * CTSN, or cumulative tsn ack point.
1101 	/* Put chunks on this list to save them for FWD TSN processing as
1542 	/* TSN received > next expected */
1680 		 * Array    order TSN's have been received (relative to the
1681 		 *	    Last Rcvd TSN). If no gaps exist, i.e. no out of
1686 		 * Last Rcvd   : This is the last TSN received in
1687 		 * TSN	       : sequence. This value is set initially by
1688 		 *	       : taking the peer's Initial TSN, received in
1693 		 * "Cumulative TSN ACK Point".	In this case, we
1739 		 * Initial TSN Value minus 1
1853 	/* Next TSN    : The next TSN number to be assigned to a new
1856 	 *	       : time a DATA chunk is assigned a TSN
1863 	 * Last Rcvd   : This is the last TSN received in sequence.  This value
1864 	 * TSN	       : is set initially by taking the peer's Initial TSN,
1868 	 * Most of RFC 2960 refers to this as the Cumulative TSN Ack Point.
1876 	/* Highest TSN that is acknowledged by incoming SACKs. */
1879 	/* TSN marking the fast recovery exit point */
1961 	/* Last TSN that caused an ECNE Chunk to be sent.  */
1964 	/* Last TSN that caused a CWR Chunk to be sent.	 */
2042 	 * Initial TSN and every time a new ASCONF chunk is created