zebra/lib: move some code around

* move netlink code from zebra_nc.c to kernel_netlink.c;
* move vrf CLI commands from if.c/interface.c to vrf.c/zebra_vrf.c;
* move declaration of the 'ns' structure to a header file.

Signed-off-by: Renato Westphal <renato@opensourcerouting.org>

lib/if.c

@@ -840,60 +840,6 @@ ALIAS (no_interface,
        "Interface's name\n"
        VRF_CMD_HELP_STR)
 
-DEFUN (vrf,
-       vrf_cmd,
-       "vrf NAME",
-       "Select a VRF to configure\n"
-       "VRF's name\n")
-{
-  struct vrf *vrfp;
-  size_t sl;
-
-  if ((sl = strlen(argv[0])) > VRF_NAMSIZ)
-    {
-      vty_out (vty, "%% VRF name %s is invalid: length exceeds "
-		    "%d characters%s",
-	       argv[0], VRF_NAMSIZ, VTY_NEWLINE);
-      return CMD_WARNING;
-    }
-
-  vrfp = vrf_get (VRF_UNKNOWN, argv[0]);
-
-  VTY_PUSH_CONTEXT_COMPAT (VRF_NODE, vrfp);
-
-  return CMD_SUCCESS;
-}
-
-DEFUN_NOSH (no_vrf,
-           no_vrf_cmd,
-           "no vrf NAME",
-           NO_STR
-           "Delete a pseudo VRF's configuration\n"
-           "VRF's name\n")
-{
-  struct vrf *vrfp;
-
-  vrfp = vrf_list_lookup_by_name (argv[0]);
-
-  if (vrfp == NULL)
-    {
-      vty_out (vty, "%% VRF %s does not exist%s", argv[0], VTY_NEWLINE);
-      return CMD_WARNING;
-    }
-
-  if (CHECK_FLAG (vrfp->status, VRF_ACTIVE))
-    {
-      vty_out (vty, "%% Only inactive VRFs can be deleted%s",
-	      VTY_NEWLINE);
-      return CMD_WARNING;
-    }
-
-  vrf_delete(vrfp);
-
-  return CMD_SUCCESS;
-}
-
-
 /* For debug purpose. */
 DEFUN (show_address,
        show_address_cmd,

lib/ns.c

@@ -91,22 +91,6 @@ static int have_netns(void)
 #endif
 }
 
-struct ns
-{
-  /* Identifier, same as the vector index */
-  ns_id_t ns_id;
-  /* Name */
-  char *name;
-  /* File descriptor */
-  int fd;
-
-  /* Master list of interfaces belonging to this NS */
-  struct list *iflist;
-
-  /* User data */
-  void *info;
-};
-
 /* Holding NS hooks  */
 struct ns_master
 {

lib/ns.h

@@ -33,6 +33,22 @@ typedef u_int16_t ns_id_t;
 /* Default netns directory (Linux) */
 #define NS_RUN_DIR         "/var/run/netns"
 
+struct ns
+{
+  /* Identifier, same as the vector index */
+  ns_id_t ns_id;
+  /* Name */
+  char *name;
+  /* File descriptor */
+  int fd;
+
+  /* Master list of interfaces belonging to this NS */
+  struct list *iflist;
+
+  /* User data */
+  void *info;
+};
+
 /*
  * NS hooks
  */

lib/vrf.c

@@ -740,6 +740,60 @@ vrf_socket (int domain, int type, int protocol, vrf_id_t vrf_id)
   return ret;
 }
 
+/* vrf CLI commands */
+DEFUN (vrf,
+       vrf_cmd,
+       "vrf NAME",
+       "Select a VRF to configure\n"
+       "VRF's name\n")
+{
+  struct vrf *vrfp;
+  size_t sl;
+
+  if ((sl = strlen(argv[0])) > VRF_NAMSIZ)
+    {
+      vty_out (vty, "%% VRF name %s is invalid: length exceeds "
+		    "%d characters%s",
+	       argv[0], VRF_NAMSIZ, VTY_NEWLINE);
+      return CMD_WARNING;
+    }
+
+  vrfp = vrf_get (VRF_UNKNOWN, argv[0]);
+
+  VTY_PUSH_CONTEXT_COMPAT (VRF_NODE, vrfp);
+
+  return CMD_SUCCESS;
+}
+
+DEFUN_NOSH (no_vrf,
+           no_vrf_cmd,
+           "no vrf NAME",
+           NO_STR
+           "Delete a pseudo VRF's configuration\n"
+           "VRF's name\n")
+{
+  struct vrf *vrfp;
+
+  vrfp = vrf_list_lookup_by_name (argv[0]);
+
+  if (vrfp == NULL)
+    {
+      vty_out (vty, "%% VRF %s does not exist%s", argv[0], VTY_NEWLINE);
+      return CMD_WARNING;
+    }
+
+  if (CHECK_FLAG (vrfp->status, VRF_ACTIVE))
+    {
+      vty_out (vty, "%% Only inactive VRFs can be deleted%s",
+	      VTY_NEWLINE);
+      return CMD_WARNING;
+    }
+
+  vrf_delete(vrfp);
+
+  return CMD_SUCCESS;
+}
+
 /*
  * Debug CLI for vrf's
  */

zebra/interface.c

@@ -1289,33 +1289,6 @@ struct cmd_node interface_node =
   1
 };
 
-/* Wrapper hook point for zebra daemon so that ifindex can be set 
- * DEFUN macro not used as extract.pl HAS to ignore this
- * See also interface_cmd in lib/if.c
- */ 
-DEFUN_NOSH (zebra_vrf,
-	    zebra_vrf_cmd,
-	    "vrf NAME",
-	    "Select a VRF to configure\n"
-	    "VRF's name\n")
-{
-  // VTY_DECLVAR_CONTEXT (vrf, vrfp);
-  int ret;
-  
-  /* Call lib vrf() */
-  if ((ret = vrf_cmd.func (self, vty, argc, argv)) != CMD_SUCCESS)
-    return ret;
-
-  return ret;
-}
-
-struct cmd_node vrf_node =
-{
-  VRF_NODE,
-  "%s(config-vrf)# ",
-  1
-};
-
 /* Show all interfaces to vty. */
 DEFUN (show_interface, show_interface_cmd,
        "show interface",
@@ -2929,23 +2902,6 @@ if_config_write (struct vty *vty)
   return 0;
 }
 
-static int
-vrf_config_write (struct vty *vty)
-{
-  struct listnode *node;
-  struct zebra_vrf *zvrf;
-
-  for (ALL_LIST_ELEMENTS_RO (zvrf_list, node, zvrf))
-    {
-      if (strcmp(zvrf->name, VRF_DEFAULT_NAME))
-        {
-          vty_out (vty, "vrf %s%s", zvrf->name, VTY_NEWLINE);
-          vty_out (vty, "!%s", VTY_NEWLINE);
-        }
-    }
-  return 0;
-}
-
 /* Allocate and initialize interface vector. */
 void
 zebra_if_init (void)
@@ -2957,7 +2913,6 @@ zebra_if_init (void)
   /* Install configuration write function. */
   install_node (&interface_node, if_config_write);
   install_node (&link_params_node, NULL);
-  install_node (&vrf_node, vrf_config_write);
 
   install_element (VIEW_NODE, &show_interface_cmd);
   install_element (VIEW_NODE, &show_interface_vrf_cmd);
@@ -3020,8 +2975,4 @@ zebra_if_init (void)
   install_element(LINK_PARAMS_NODE, &link_params_use_bw_cmd);
   install_element(LINK_PARAMS_NODE, &no_link_params_use_bw_cmd);
   install_element(LINK_PARAMS_NODE, &exit_link_params_cmd);
-
-  install_element (CONFIG_NODE, &zebra_vrf_cmd);
-  install_element (CONFIG_NODE, &no_vrf_cmd);
-  install_default (VRF_NODE);
 }

zebra/kernel_netlink.c

@@ -716,11 +716,18 @@ kernel_init (struct zebra_ns *zns)
 {
   unsigned long groups;
 
-  groups = RTMGRP_LINK | RTMGRP_IPV4_ROUTE | RTMGRP_IPV4_IFADDR;
+  /* Initialize netlink sockets */
-#ifdef HAVE_IPV6
+  groups = RTMGRP_LINK | RTMGRP_IPV4_ROUTE | RTMGRP_IPV4_IFADDR |
-  groups |= RTMGRP_IPV6_ROUTE | RTMGRP_IPV6_IFADDR;
+	   RTMGRP_IPV6_ROUTE | RTMGRP_IPV6_IFADDR;
-#endif /* HAVE_IPV6 */
+
+  snprintf (zns->netlink.name, sizeof (zns->netlink.name),
+	    "netlink-listen (NS %u)", zns->ns_id);
+  zns->netlink.sock = -1;
   netlink_socket (&zns->netlink, groups, zns->ns_id);
+
+  snprintf (zns->netlink_cmd.name, sizeof (zns->netlink_cmd.name),
+	    "netlink-cmd (NS %u)", zns->ns_id);
+  zns->netlink_cmd.sock = -1;
   netlink_socket (&zns->netlink_cmd, 0, zns->ns_id);
 
   /* Register kernel socket. */

zebra/zebra_ns.c

@@ -50,16 +50,6 @@ zebra_ns_enable (ns_id_t ns_id, void **info)
   rtadv_init (zns);
 #endif
 
-#ifdef HAVE_NETLINK
-  /* Initialize netlink sockets */
-  snprintf (zns->netlink.name, sizeof (zns->netlink.name),
-	    "netlink-listen (NS %u)", ns_id);
-  zns->netlink.sock = -1;
-
-  snprintf (zns->netlink_cmd.name, sizeof (zns->netlink_cmd.name),
-	    "netlink-cmd (NS %u)", ns_id);
-  zns->netlink_cmd.sock = -1;
-#endif
   zns->if_table = route_table_init ();
   kernel_init (zns);
   interface_list (zns);

zebra/zebra_vrf.c

@@ -23,6 +23,7 @@
 
 #include "log.h"
 #include "linklist.h"
+#include "command.h"
 #include "memory.h"
 
 #include "zebra/debug.h"
@@ -427,6 +428,50 @@ zebra_vrf_other_route_table (afi_t afi, u_int32_t table_id, vrf_id_t vrf_id)
   return zvrf->table[afi][SAFI_UNICAST];
 }
 
+/* Wrapper hook point for zebra daemon so that ifindex can be set
+ * DEFUN macro not used as extract.pl HAS to ignore this
+ * See also interface_cmd in lib/if.c
+ */
+DEFUN_NOSH (zebra_vrf,
+	    zebra_vrf_cmd,
+	    "vrf NAME",
+	    "Select a VRF to configure\n"
+	    "VRF's name\n")
+{
+  // VTY_DECLVAR_CONTEXT (vrf, vrfp);
+  int ret;
+
+  /* Call lib vrf() */
+  if ((ret = vrf_cmd.func (self, vty, argc, argv)) != CMD_SUCCESS)
+    return ret;
+
+  return ret;
+}
+
+static int
+vrf_config_write (struct vty *vty)
+{
+  struct listnode *node;
+  struct zebra_vrf *zvrf;
+
+  for (ALL_LIST_ELEMENTS_RO (zvrf_list, node, zvrf))
+    {
+      if (strcmp(zvrf->name, VRF_DEFAULT_NAME))
+        {
+          vty_out (vty, "vrf %s%s", zvrf->name, VTY_NEWLINE);
+          vty_out (vty, "!%s", VTY_NEWLINE);
+        }
+    }
+  return 0;
+}
+
+struct cmd_node vrf_node =
+{
+  VRF_NODE,
+  "%s(config-vrf)# ",
+  1
+};
+
 /* Zebra VRF initialization. */
 void
 zebra_vrf_init (void)
@@ -439,4 +484,9 @@ zebra_vrf_init (void)
   zvrf_list = list_new ();
 
   vrf_init ();
+
+  install_node (&vrf_node, vrf_config_write);
+  install_default (VRF_NODE);
+  install_element (CONFIG_NODE, &zebra_vrf_cmd);
+  install_element (CONFIG_NODE, &no_vrf_cmd);
 }