sctp: Bring SCTP_DELAYED_ACK socket option into API compliance

Brings delayed_ack socket option set/get into line with the latest ietf
socket extensions API draft, while maintaining backwards compatibility.

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

1 files changed, 4 insertions, 0 deletions

diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 0ce0443c5b79..e11151702bee 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -300,6 +300,7 @@ struct sctp_sock {
 
         /* The default SACK delay timeout for new associations. */
         __u32 sackdelay;
+        __u32 sackfreq;
 
         /* Flags controlling Heartbeat, SACK delay, and Path MTU Discovery. */
         __u32 param_flags;
@@ -938,6 +939,7 @@ struct sctp_transport {
 
         /* SACK delay timeout */
         unsigned long sackdelay;
+        __u32 sackfreq;
 
         /* When was the last time (in jiffies) that we heard from this
          * transport?  We use this to pick new active and retran paths.
@@ -1542,6 +1544,7 @@ struct sctp_association {
                  *             : SACK's are not delayed (see Section 6).
                  */
                 __u8    sack_needed;     /* Do we need to sack the peer? */
+                __u32   sack_cnt;
 
                 /* These are capabilities which our peer advertised.  */
                 __u8    ecn_capable;     /* Can peer do ECN? */
@@ -1651,6 +1654,7 @@ struct sctp_association {
 
         /* SACK delay timeout */
         unsigned long sackdelay;
+        __u32 sackfreq;
 
 
         unsigned long timeouts[SCTP_NUM_TIMEOUT_TYPES];