Update Traffic Engineering Support for OSPFD

NOTE: I am squashing several commits together because they
do not independently compile and we need this ability to
do any type of sane testing on the patches.  Since this
series builds together I am doing this. -DBS

This new structure is the basis to get new link parameters for
Traffic Engineering from Zebra/interface layer to OSPFD and ISISD
for the support of Traffic Engineering

* lib/if.[c,h]: link parameters struture and get/set functions
* lib/command.[c,h]: creation of a new link-node
* lib/zclient.[c,h]: modification to the ZBUS message to convey the
link parameters structure
* lib/zebra.h: New ZBUS message

Signed-off-by: Olivier Dugeon <olivier.dugeon@orange.com>

Add support for IEEE 754 format

* lib/stream.[c,h]: Add stream_get{f,d} and stream_put{f,d}) demux and muxers to
  safely convert between big-endian IEEE-754 single and double binary
  format, as used in IETF RFCs, and C99.  Implementation depends on host
  using __STDC_IEC_559__, which should be everything we care about.  Should
  correctly error out otherwise.
* lib/network.[c,h]: Add ntohf and htonf converter
* lib/memtypes.c: Add new memeory type for Traffic Engineering support

Signed-off-by: Olivier Dugeon <olivier.dugeon@orange.com>

Add link parameters support to Zebra

* zebra/interface.c:
   - Add new link-params CLI commands
   - Add new functions to set/get link parameters for interface
* zebra/redistribute.[c,h]: Add new function to propagate link parameters
to routing daemon (essentially OSPFD and ISISD) for Traffic Engineering.
* zebra/redistribute_null.c: Add new function
zebra_interface_parameters_update()
* zebra/zserv.[c,h]: Add new functions to send link parameters

Signed-off-by: Olivier Dugeon <olivier.dugeon@orange.com>

Add support of new link-params CLI to vtysh

In vtysh_config.c/vtysh_config_parse_line(), it is not possible to continue
to use the ordered version for adding line i.e. config_add_line_uniq() to print
Interface CLI commands as it completely break the new LINK_PARAMS_NODE.

Signed-off-by: Olivier Dugeon <olivier.dugeon@orange.com>

Update Traffic Engineering support for OSPFD

These patches update original code to RFC3630 (OSPF-TE) and add support of
RFC5392 (Inter-AS v2) & RFC7471 (TE metric extensions) and partial support
of RFC6827 (ASON - GMPLS).

* ospfd/ospf_dump.[c,h]: Add new dump functions for Traffic Engineering
* ospfd/ospf_opaque.[c,h]: Add new TLV code points for RFC5392
* ospfd/ospf_packet.c: Update checking of OSPF_OPTION
* ospfd/ospf_vty.[c,h]: Update ospf_str2area_id
* ospfd/ospf_zebra.c: Add new function ospf_interface_link_params() to get
Link Parameters information from the interface to populate Traffic Engineering
metrics
* ospfd/ospfd.[c,h]: Update OSPF_OPTION flags (T -> MT and new DN)
* ospfd/ospf_te.[c,h]: Major modifications to update the code to new
link parameters structure and new RFCs

Signed-off-by: Olivier Dugeon <olivier.dugeon@orange.com>

tmp

1 files changed, 44 insertions, 0 deletions

diff --git a/lib/if.c b/lib/if.c
index 11d339ffb..e44882a43 100644
--- a/lib/if.c
+++ b/lib/if.c
@@ -205,6 +205,8 @@ if_delete (struct interface *ifp)
   list_free (ifp->connected);
   list_free (ifp->nbr_connected);
 
+  if_link_params_free (ifp);
+
   XFREE (MTYPE_IF, ifp);
 }
 
@@ -1364,3 +1366,45 @@ if_link_type_str (enum zebra_link_type llt)
     }
   return NULL;
 }
+
+struct if_link_params *
+if_link_params_get (struct interface *ifp)
+{
+  int i;
+
+  if (ifp->link_params != NULL)
+    return ifp->link_params;
+
+  struct if_link_params *iflp = XCALLOC(MTYPE_IF_LINK_PARAMS,
+                                      sizeof (struct if_link_params));
+  if (iflp == NULL) return NULL;
+
+  /* Set TE metric == standard metric */
+  iflp->te_metric = ifp->metric;
+
+  /* Compute default bandwidth based on interface */
+  int bw = (float)((ifp->bandwidth ? ifp->bandwidth : DEFAULT_BANDWIDTH)
+                   * TE_KILO_BIT / TE_BYTE);
+
+  /* Set Max, Reservable and Unreserved Bandwidth */
+  iflp->max_bw = bw;
+  iflp->max_rsv_bw = bw;
+  for (i = 0; i < MAX_CLASS_TYPE; i++)
+    iflp->unrsv_bw[i] = bw;
+
+  /* Update Link parameters status */
+  iflp->lp_status = LP_TE | LP_MAX_BW | LP_MAX_RSV_BW | LP_UNRSV_BW;
+
+  /* Finally attach newly created Link Parameters */
+  ifp->link_params = iflp;
+
+  return iflp;
+}
+
+void
+if_link_params_free (struct interface *ifp)
+{
+  if (ifp->link_params == NULL) return;
+  XFREE(MTYPE_IF_LINK_PARAMS, ifp->link_params);
+  ifp->link_params = NULL;
+}