[SCTP]: Update SCTP_PEER_ADDR_PARAMS socket option to the latest api draft.

This patch adds support to set/get heartbeat interval, maximum number of
retransmissions, pathmtu, sackdelay time for a particular transport/
association/socket as per the latest SCTP sockets api draft11.

Signed-off-by: Frank Filz <ffilz@us.ibm.com>
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 16 insertions, 0 deletions

diff --git a/include/net/sctp/user.h b/include/net/sctp/user.h
index f1c3bc54526a..b9052864fa5a 100644
--- a/include/net/sctp/user.h
+++ b/include/net/sctp/user.h
@@ -503,11 +503,27 @@ struct sctp_setadaption {
  *   unreachable. The following structure is used to access and modify an
  *   address's parameters:
  */
+enum  sctp_spp_flags {
+        SPP_HB_ENABLE = 1,              /*Enable heartbeats*/
+        SPP_HB_DISABLE = 2,             /*Disable heartbeats*/
+        SPP_HB = SPP_HB_ENABLE | SPP_HB_DISABLE,
+        SPP_HB_DEMAND = 4,              /*Send heartbeat immediately*/
+        SPP_PMTUD_ENABLE = 8,           /*Enable PMTU discovery*/
+        SPP_PMTUD_DISABLE = 16,         /*Disable PMTU discovery*/
+        SPP_PMTUD = SPP_PMTUD_ENABLE | SPP_PMTUD_DISABLE,
+        SPP_SACKDELAY_ENABLE = 32,      /*Enable SACK*/
+        SPP_SACKDELAY_DISABLE = 64,     /*Disable SACK*/
+        SPP_SACKDELAY = SPP_SACKDELAY_ENABLE | SPP_SACKDELAY_DISABLE,
+};
+
 struct sctp_paddrparams {
         sctp_assoc_t            spp_assoc_id;
         struct sockaddr_storage spp_address;
         __u32                   spp_hbinterval;
         __u16                   spp_pathmaxrxt;
+        __u32                   spp_pathmtu;
+        __u32                   spp_sackdelay;
+        __u32                   spp_flags;
 } __attribute__((packed, aligned(4)));
 
 /*