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, 64 insertions, 0 deletions

diff --git a/lib/if.h b/lib/if.h
index 63e50f48bb..17f8565595 100644
--- a/lib/if.h
+++ b/lib/if.h
@@ -131,6 +131,63 @@ struct if_stats
 };
 #endif /* HAVE_PROC_NET_DEV */
 
+/* Here are "non-official" architectural constants. */
+#define TE_EXT_MASK             0x0FFFFFFF
+#define TE_EXT_ANORMAL          0x80000000
+#define LOSS_PRECISION          0.000003
+#define TE_KILO_BIT             1000
+#define TE_BYTE                 8
+#define DEFAULT_BANDWIDTH       10000
+#define MAX_CLASS_TYPE          8
+#define MAX_PKT_LOSS            50.331642
+
+/* Link Parameters Status: 0: unset, 1: set, */
+#define LP_UNSET                0x0000
+#define LP_TE                   0x0001
+#define LP_MAX_BW               0x0002
+#define LP_MAX_RSV_BW           0x0004
+#define LP_UNRSV_BW             0x0008
+#define LP_ADM_GRP              0x0010
+#define LP_RMT_AS               0x0020
+#define LP_DELAY                0x0040
+#define LP_MM_DELAY             0x0080
+#define LP_DELAY_VAR            0x0100
+#define LP_PKT_LOSS             0x0200
+#define LP_RES_BW               0x0400
+#define LP_AVA_BW               0x0800
+#define LP_USE_BW               0x1000
+
+#define IS_PARAM_UNSET(lp, st) !(lp->lp_status & st)
+#define IS_PARAM_SET(lp, st) (lp->lp_status & st)
+#define IS_LINK_PARAMS_SET(lp) (lp->lp_status != LP_UNSET)
+
+#define SET_PARAM(lp, st) (lp->lp_status) |= (st)
+#define UNSET_PARAM(lp, st) (lp->lp_status) &= ~(st)
+#define RESET_LINK_PARAM(lp) (lp->lp_status = LP_UNSET)
+
+/* Link Parameters for Traffic Engineering */
+struct if_link_params {
+  u_int32_t lp_status;   /* Status of Link Parameters: */
+  u_int32_t te_metric;   /* Traffic Engineering metric */
+  float max_bw;          /* Maximum Bandwidth */
+  float max_rsv_bw;      /* Maximum Reservable Bandwidth */
+  float unrsv_bw[MAX_CLASS_TYPE];     /* Unreserved Bandwidth per Class Type (8) */
+  u_int32_t admin_grp;   /* Administrative group */
+  u_int32_t rmt_as;      /* Remote AS number */
+  struct in_addr rmt_ip; /* Remote IP address */
+  u_int32_t av_delay;    /* Link Average Delay */
+  u_int32_t min_delay;   /* Link Min Delay */
+  u_int32_t max_delay;   /* Link Max Delay */
+  u_int32_t delay_var;   /* Link Delay Variation */
+  float pkt_loss;        /* Link Packet Loss */
+  float res_bw;          /* Residual Bandwidth */
+  float ava_bw;          /* Available Bandwidth */
+  float use_bw;          /* Utilized Bandwidth */
+};
+
+#define INTERFACE_LINK_PARAMS_SIZE   sizeof(struct if_link_params)
+#define HAS_LINK_PARAMS(ifp)  ((ifp)->link_params != NULL)
+
 /* Interface structure */
 struct interface 
 {
@@ -174,6 +231,9 @@ struct interface
   /* interface bandwidth, kbits */
   unsigned int bandwidth;
   
+  /* Link parameters for Traffic Engineering */
+  struct if_link_params *link_params;
+
   /* description of the interface. */
   char *desc;			
 
@@ -418,6 +478,10 @@ extern ifindex_t if_nametoindex (const char *);
 extern char *if_indextoname (ifindex_t, char *);
 #endif
 
+/* link parameters */
+struct if_link_params *if_link_params_get (struct interface *);
+void if_link_params_free (struct interface *);
+
 /* Exported variables. */
 extern struct cmd_element interface_desc_cmd;
 extern struct cmd_element no_interface_desc_cmd;