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Commit c0058a35 authored by Vlad Yasevich's avatar Vlad Yasevich
Browse files

sctp: Save some room in the sctp_transport by using bitfields 



Saves some room in the sctp_transport structure.

Signed-off-by: default avatarVlad Yasevich <vladislav.yasevich@hp.com>
parent d9efc223

include/net/sctp/structs.h

+27 −22
Original line number Diff line number Diff line
@@ -877,7 +877,33 @@ struct sctp_transport { 


	/* Reference counting. */

	atomic_t refcnt;

	int	 dead;

	int	 dead:1,

		/* RTO-Pending : A flag used to track if one of the DATA

		 *		chunks sent to this address is currently being

		 *		used to compute a RTT. If this flag is 0,

		 *		the next DATA chunk sent to this destination

		 *		should be used to compute a RTT and this flag

		 *		should be set. Every time the RTT

		 *		calculation completes (i.e. the DATA chunk

		 *		is SACK'd) clear this flag.

		 */

		 rto_pending:1,



		/*

		 * hb_sent : a flag that signals that we have a pending

		 * heartbeat.

		 */

		hb_sent:1,



		/* Flag to track the current fast recovery state */

		fast_recovery:1,



		/* Is the Path MTU update pending on this tranport */

		pmtu_pending:1,



		/* Is this structure kfree()able? */

		malloced:1;





	/* This is the peer's IP address and port. */

	union sctp_addr ipaddr;
@@ -907,22 +933,6 @@ struct sctp_transport { 
	/* SRTT	       : The current smoothed round trip time.	*/

	__u32 srtt;



	/* RTO-Pending : A flag used to track if one of the DATA

	 *		chunks sent to this address is currently being

	 *		used to compute a RTT. If this flag is 0,

	 *		the next DATA chunk sent to this destination

	 *		should be used to compute a RTT and this flag

	 *		should be set. Every time the RTT

	 *		calculation completes (i.e. the DATA chunk

	 *		is SACK'd) clear this flag.

	 * hb_sent : a flag that signals that we have a pending heartbeat.

	 */

	__u8 rto_pending;

	__u8 hb_sent;



	/* Flag to track the current fast recovery state */

	__u8 fast_recovery;



	/*

	 * These are the congestion stats.

	 */
@@ -975,9 +985,6 @@ struct sctp_transport { 
	 */

	__u16 pathmaxrxt;



	/* is the Path MTU update pending on this tranport */

	__u8 pmtu_pending;



	/* PMTU	      : The current known path MTU.  */

	__u32 pathmtu;
@@ -1021,8 +1028,6 @@ struct sctp_transport { 
	/* This is the list of transports that have chunks to send.  */

	struct list_head send_ready;



	int malloced; /* Is this structure kfree()able? */



	/* State information saved for SFR_CACC algorithm. The key

	 * idea in SFR_CACC is to maintain state at the sender on a

	 * per-destination basis when a changeover happens.