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authorVlad Yasevich <vladislav.yasevich@hp.com>2010-04-30 22:41:09 -0400
committerVlad Yasevich <vladislav.yasevich@hp.com>2010-04-30 22:41:09 -0400
commitc0058a35aacc79406e867ec33c5cb75624fd5860 (patch)
treef474e3bc3aac2162897d592ed91c5116616111a6 /include/net/sctp
parentd9efc2231b28bc199f9de4dd594248b7341188e5 (diff)
sctp: Save some room in the sctp_transport by using bitfields
Saves some room in the sctp_transport structure. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Diffstat (limited to 'include/net/sctp')
-rw-r--r--include/net/sctp/structs.h49
1 files changed, 27 insertions, 22 deletions
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 03deffb1886..9072dd67d8a 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -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.