Blitz on bgp_msg_read, particularly OPEN message handling

In the BGP Engine the OPEN message needs to be processed into the open_recv
structure in the *connection*.  The OPEN that arrives must be checked
for acceptability before it is acknowledged.  Later the connection may be
discarded in collision resolution, or the connection may become the
Established connection, and the open_recv structure is passed to the
session and hence to the Peering Engine.

  modified:   bgpd/bgp.h
  modified:   bgpd/bgp_common.c
  modified:   bgpd/bgp_common.h
  modified:   bgpd/bgp_connection.c
  modified:   bgpd/bgp_connection.h
  modified:   bgpd/bgp_fsm.c
  modified:   bgpd/bgp_msg_read.c
  modified:   bgpd/bgp_msg_read.h
  modified:   bgpd/bgp_msg_write.c
  modified:   bgpd/bgp_notification.c
  modified:   bgpd/bgp_notification.h
  modified:   bgpd/bgp_open.h
  modified:   bgpd/bgp_open_state.c
  modified:   bgpd/bgp_open_state.h
  modified:   bgpd/bgp_packet.c
  modified:   bgpd/bgp_session.h
  modified:   lib/distribute.c
  modified:   lib/if_rmap.c
  modified:   lib/qafi_safi.h
  modified:   lib/stream.c
  modified:   lib/stream.h

1 files changed, 7 insertions, 0 deletions

diff --git a/lib/stream.c b/lib/stream.c
index dc636361..79ce1791 100644
--- a/lib/stream.c
+++ b/lib/stream.c
@@ -215,6 +215,13 @@ stream_get_endp (struct stream *s)
 }
 
 size_t
+stream_get_left (struct stream *s)
+{
+  STREAM_VERIFY_SANE(s);
+  return s->endp - s->getp ;
+}
+
+size_t
 stream_get_size (struct stream *s)
 {
   STREAM_VERIFY_SANE(s);