[SCTP]: Add back the code that accounted for FORWARD_TSN parameter in INIT.

Some recent changes completely removed accounting for the FORWARD_TSN
parameter length in the INIT and INIT-ACK chunk.  This is wrong and
should be restored.

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

1 files changed, 6 insertions, 0 deletions

diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index ed7c9e30ebc9..3cc629d3c9ff 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -210,6 +210,9 @@ struct sctp_chunk *sctp_make_init(const struct sctp_association *asoc,
         chunksize = sizeof(init) + addrs_len + SCTP_SAT_LEN(num_types);
         chunksize += sizeof(ecap_param);
 
+        if (sctp_prsctp_enable)
+                chunksize += sizeof(prsctp_param);
+
         /* ADDIP: Section 4.2.7:
          *  An implementation supporting this extension [ADDIP] MUST list
          *  the ASCONF,the ASCONF-ACK, and the AUTH  chunks in its INIT and
@@ -369,6 +372,9 @@ struct sctp_chunk *sctp_make_init_ack(const struct sctp_association *asoc,
         if (asoc->peer.ecn_capable)
                 chunksize += sizeof(ecap_param);
 
+        if (sctp_prsctp_enable)
+                chunksize += sizeof(prsctp_param);
+
         if (sctp_addip_enable) {
                 extensions[num_ext] = SCTP_CID_ASCONF;
                 extensions[num_ext+1] = SCTP_CID_ASCONF_ACK;