[SCTP] Fix SCTP sendbuffer accouting.

- Include chunk and skb sizes in sendbuffer accounting.
- 2 policies are supported. 0: per socket accouting, 1: per association
  accounting

DaveM: I've made the default per-socket.

Signed-off-by: Neil Horman <nhorman@redhat.com>
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 0 deletions

diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 23c85a236c41..2e1f9c3556f5 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -1043,6 +1043,9 @@ SCTP_STATIC __init int sctp_init(void)
         sctp_max_retrans_path           = 5;
         sctp_max_retrans_init           = 8;
 
+        /* Sendbuffer growth        - do per-socket accounting */
+        sctp_sndbuf_policy              = 0;
+
         /* HB.interval              - 30 seconds */
         sctp_hb_interval                = 30 * HZ;