OSPFD: Add Experimental Segment Routing support

This is an implementation of draft-ietf-ospf-segment-routing-extensions-24
and RFC7684 for Extended Link & Prefix Opaque LSA.
Look to doc/OSPF_SR.rst for implementation details & known limitations.

New files:

 - ospfd/ospf_sr.h: Segment Routing structure definition (SubTLVs + SRDB)
 - ospfd/ospf_sr.c: Main functions for Segment Routing support
 - ospfd/ospf_ext.h: TLVs and SubTLVs definition for RFC7684
 - ospfd/ospf_ext.c: RFC7684 Extended Link / Prefix implementation
 - doc/OSPF-SRr.rst: Documentation

Modified Files:

 - doc/ospfd.texi: Add new Segment Routing CLI command definition
 - lib/command.h: Add new string command for Segment Routing CLI
 - lib/mpls.h: Add default value for SRGB
 - lib/route_types.txt: Add new OSPF Segment Routing route type
 - ospfd/ospf_dump.[c,h]: Add OSPF SR debug
 - ospfd/ospf_memory.[c,h]: Add new Segment Routing memory type
 - ospfd/ospf_opaque.[c,h]: Add ospf_sr_init() starting function
 - ospfd/ospf_ri.c: Add new functions to Set/Get Segment Routing TLVs
Add new ospf_router_info_lsa_upadte() to send Opaque LSA to ospf_sr.c()
 - ospfd/ospf_ri.h: Add new Router Information SR SubTLVs
 - ospfd/ospf_spf.c: Add new scheduler when running SPF to trigger
update of NHLFE
 - ospfd/ospfd.h: Add new thread for Segment Routing scheduler
 - ospfd/subdir.am: Add new files
 - vtysh/Makefile.am: Add new ospf_sr.c file for vtysh
 - zebra/kernel_netlink.c: Add new OSPF_SR route type
 - zebra/rt_netlink.[c,h]: Add new OSPF_SR route type
 - zebra/zebra_mpls.h: Add new OSPF_SR route type

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

1 files changed, 35 insertions, 1 deletions

diff --git a/ospfd/ospf_dump.c b/ospfd/ospf_dump.c
index 6a410f4ed3..a167220765 100644
--- a/ospfd/ospf_dump.c
+++ b/ospfd/ospf_dump.c
@@ -51,6 +51,8 @@ unsigned long conf_debug_ospf_lsa = 0;
 unsigned long conf_debug_ospf_zebra = 0;
 unsigned long conf_debug_ospf_nssa = 0;
 unsigned long conf_debug_ospf_te = 0;
+unsigned long conf_debug_ospf_ext = 0;
+unsigned long conf_debug_ospf_sr = 0;
 
 /* Enable debug option variables -- valid only session. */
 unsigned long term_debug_ospf_packet[5] = {0, 0, 0, 0, 0};
@@ -61,7 +63,8 @@ unsigned long term_debug_ospf_lsa = 0;
 unsigned long term_debug_ospf_zebra = 0;
 unsigned long term_debug_ospf_nssa = 0;
 unsigned long term_debug_ospf_te = 0;
-
+unsigned long term_debug_ospf_ext = 0;
+unsigned long term_debug_ospf_sr = 0;
 
 const char *ospf_redist_string(u_int route_type)
 {
@@ -1441,6 +1444,33 @@ DEFUN (no_debug_ospf_te,
 	return CMD_SUCCESS;
 }
 
+DEFUN (debug_ospf_sr,
+       debug_ospf_sr_cmd,
+       "debug ospf sr",
+       DEBUG_STR
+       OSPF_STR
+       "OSPF-SR information\n")
+{
+	if (vty->node == CONFIG_NODE)
+		CONF_DEBUG_ON(sr, SR);
+	TERM_DEBUG_ON(sr, SR);
+	return CMD_SUCCESS;
+}
+
+DEFUN (no_debug_ospf_sr,
+       no_debug_ospf_sr_cmd,
+       "no debug ospf sr",
+       NO_STR
+       DEBUG_STR
+       OSPF_STR
+       "OSPF-SR information\n")
+{
+	if (vty->node == CONFIG_NODE)
+		CONF_DEBUG_OFF(sr, SR);
+	TERM_DEBUG_OFF(sr, SR);
+	return CMD_SUCCESS;
+}
+
 DEFUN (no_debug_ospf,
        no_debug_ospf_cmd,
        "no debug ospf",
@@ -1774,6 +1804,7 @@ void debug_init()
 	install_element(ENABLE_NODE, &debug_ospf_event_cmd);
 	install_element(ENABLE_NODE, &debug_ospf_nssa_cmd);
 	install_element(ENABLE_NODE, &debug_ospf_te_cmd);
+	install_element(ENABLE_NODE, &debug_ospf_sr_cmd);
 	install_element(ENABLE_NODE, &no_debug_ospf_ism_cmd);
 	install_element(ENABLE_NODE, &no_debug_ospf_nsm_cmd);
 	install_element(ENABLE_NODE, &no_debug_ospf_lsa_cmd);
@@ -1781,6 +1812,7 @@ void debug_init()
 	install_element(ENABLE_NODE, &no_debug_ospf_event_cmd);
 	install_element(ENABLE_NODE, &no_debug_ospf_nssa_cmd);
 	install_element(ENABLE_NODE, &no_debug_ospf_te_cmd);
+	install_element(ENABLE_NODE, &no_debug_ospf_sr_cmd);
 
 	install_element(ENABLE_NODE, &show_debugging_ospf_instance_cmd);
 	install_element(ENABLE_NODE, &debug_ospf_packet_cmd);
@@ -1809,12 +1841,14 @@ void debug_init()
 	install_element(CONFIG_NODE, &debug_ospf_event_cmd);
 	install_element(CONFIG_NODE, &debug_ospf_nssa_cmd);
 	install_element(CONFIG_NODE, &debug_ospf_te_cmd);
+	install_element(CONFIG_NODE, &debug_ospf_sr_cmd);
 	install_element(CONFIG_NODE, &no_debug_ospf_nsm_cmd);
 	install_element(CONFIG_NODE, &no_debug_ospf_lsa_cmd);
 	install_element(CONFIG_NODE, &no_debug_ospf_zebra_cmd);
 	install_element(CONFIG_NODE, &no_debug_ospf_event_cmd);
 	install_element(CONFIG_NODE, &no_debug_ospf_nssa_cmd);
 	install_element(CONFIG_NODE, &no_debug_ospf_te_cmd);
+	install_element(CONFIG_NODE, &no_debug_ospf_sr_cmd);
 
 	install_element(CONFIG_NODE, &debug_ospf_instance_nsm_cmd);
 	install_element(CONFIG_NODE, &debug_ospf_instance_lsa_cmd);