zebra: VNI and VTEP handling

Implement fundamental handling for VNIs and VTEPs:
- Handle EVPN enable/disable by client (advertise-all-vni)
- Create/update/delete VNIs based on VxLAN interface events and inform
client
- Handle VTEP add/delete from client and install into kernel
- New debug command for VxLAN/EVPN
- kernel interface (Linux/netlink only)

Signed-off-by: Vivek Venkatraman <vivek@cumulusnetworks.com>
Reviewed-by:   Donald Sharp <sharpd@cumulusnetworks.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/zebra/debug.c b/zebra/debug.c
index ba2a9ad2a3..0b0a0e9886 100644
--- a/zebra/debug.c
+++ b/zebra/debug.c
@@ -31,6 +31,7 @@ unsigned long zebra_debug_rib;
 unsigned long zebra_debug_fpm;
 unsigned long zebra_debug_nht;
 unsigned long zebra_debug_mpls;
+unsigned long zebra_debug_vxlan;
 
 DEFUN (show_debugging_zebra,
        show_debugging_zebra_cmd,
@@ -121,6 +122,17 @@ DEFUN (debug_zebra_mpls,
   return CMD_WARNING;
 }
 
+DEFUN (debug_zebra_vxlan,
+       debug_zebra_vxlan_cmd,
+       "debug zebra vxlan",
+       DEBUG_STR
+       "Zebra configuration\n"
+       "Debug option set for zebra VxLAN (EVPN)\n")
+{
+  zebra_debug_vxlan = ZEBRA_DEBUG_VXLAN;
+  return CMD_WARNING;
+}
+
 DEFUN (debug_zebra_packet,
        debug_zebra_packet_cmd,
        "debug zebra packet [<recv|send>] [detail]",
@@ -251,6 +263,18 @@ DEFUN (no_debug_zebra_mpls,
   return CMD_SUCCESS;
 }
 
+DEFUN (no_debug_zebra_vxlan,
+       no_debug_zebra_vxlan_cmd,
+       "no debug zebra vxlan",
+       NO_STR
+       DEBUG_STR
+       "Zebra configuration\n"
+       "Debug option set for zebra VxLAN (EVPN)\n")
+{
+  zebra_debug_vxlan = 0;
+  return CMD_SUCCESS;
+}
+
 DEFUN (no_debug_zebra_packet,
        no_debug_zebra_packet_cmd,
        "no debug zebra packet [<recv|send>]",
@@ -419,6 +443,11 @@ config_write_debug (struct vty *vty)
       vty_out (vty, "debug zebra mpls%s", VTYNL);
       write++;
     }
+  if (IS_ZEBRA_DEBUG_VXLAN)
+    {
+      vty_out (vty, "debug zebra vxlan%s", VTY_NEWLINE);
+      write++;
+    }
   return write;
 }
 
@@ -431,6 +460,7 @@ zebra_debug_init (void)
   zebra_debug_rib = 0;
   zebra_debug_fpm = 0;
   zebra_debug_mpls = 0;
+  zebra_debug_vxlan = 0;
 
   install_node (&debug_node, config_write_debug);
 
@@ -439,6 +469,7 @@ zebra_debug_init (void)
   install_element (ENABLE_NODE, &debug_zebra_events_cmd);
   install_element (ENABLE_NODE, &debug_zebra_nht_cmd);
   install_element (ENABLE_NODE, &debug_zebra_mpls_cmd);
+  install_element (ENABLE_NODE, &debug_zebra_vxlan_cmd);
   install_element (ENABLE_NODE, &debug_zebra_packet_cmd);
   install_element (ENABLE_NODE, &debug_zebra_kernel_cmd);
   install_element (ENABLE_NODE, &debug_zebra_kernel_msgdump_cmd);
@@ -448,6 +479,7 @@ zebra_debug_init (void)
   install_element (ENABLE_NODE, &no_debug_zebra_events_cmd);
   install_element (ENABLE_NODE, &no_debug_zebra_nht_cmd);
   install_element (ENABLE_NODE, &no_debug_zebra_mpls_cmd);
+  install_element (ENABLE_NODE, &no_debug_zebra_vxlan_cmd);
   install_element (ENABLE_NODE, &no_debug_zebra_packet_cmd);
   install_element (ENABLE_NODE, &no_debug_zebra_kernel_cmd);
   install_element (ENABLE_NODE, &no_debug_zebra_kernel_msgdump_cmd);
@@ -458,6 +490,7 @@ zebra_debug_init (void)
   install_element (CONFIG_NODE, &debug_zebra_events_cmd);
   install_element (CONFIG_NODE, &debug_zebra_nht_cmd);
   install_element (CONFIG_NODE, &debug_zebra_mpls_cmd);
+  install_element (CONFIG_NODE, &debug_zebra_vxlan_cmd);
   install_element (CONFIG_NODE, &debug_zebra_packet_cmd);
   install_element (CONFIG_NODE, &debug_zebra_kernel_cmd);
   install_element (CONFIG_NODE, &debug_zebra_kernel_msgdump_cmd);
@@ -467,6 +500,7 @@ zebra_debug_init (void)
   install_element (CONFIG_NODE, &no_debug_zebra_events_cmd);
   install_element (CONFIG_NODE, &no_debug_zebra_nht_cmd);
   install_element (CONFIG_NODE, &no_debug_zebra_mpls_cmd);
+  install_element (CONFIG_NODE, &no_debug_zebra_vxlan_cmd);
   install_element (CONFIG_NODE, &no_debug_zebra_packet_cmd);
   install_element (CONFIG_NODE, &no_debug_zebra_kernel_cmd);
   install_element (CONFIG_NODE, &no_debug_zebra_kernel_msgdump_cmd);