Line data    Source code

       1             : /*
       2             :  * Copyright (C) 2018  NetDEF, Inc.
       3             :  *                     Renato Westphal
       4             :  *
       5             :  * This program is free software; you can redistribute it and/or modify it
       6             :  * under the terms of the GNU General Public License as published by the Free
       7             :  * Software Foundation; either version 2 of the License, or (at your option)
       8             :  * any later version.
       9             :  *
      10             :  * This program is distributed in the hope that it will be useful, but WITHOUT
      11             :  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
      12             :  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
      13             :  * more details.
      14             :  *
      15             :  * You should have received a copy of the GNU General Public License along
      16             :  * with this program; see the file COPYING; if not, write to the Free Software
      17             :  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
      18             :  */
      19             : 
      20             : #include <zebra.h>
      21             : 
      22             : #include "if.h"
      23             : #include "vrf.h"
      24             : #include "log.h"
      25             : #include "prefix.h"
      26             : #include "table.h"
      27             : #include "command.h"
      28             : #include "routemap.h"
      29             : #include "northbound.h"
      30             : #include "libfrr.h"
      31             : 
      32             : #include "ripd/ripd.h"
      33             : #include "ripd/rip_nb.h"
      34             : #include "ripd/rip_debug.h"
      35             : #include "ripd/rip_interface.h"
      36             : 
      37             : /*
      38             :  * XPath: /frr-ripd:clear-rip-route
      39             :  */
      40           0 : static void clear_rip_route(struct rip *rip)
      41             : {
      42           0 :         struct route_node *rp;
      43             : 
      44           0 :         if (IS_RIP_DEBUG_EVENT)
      45           0 :                 zlog_debug("Clearing all RIP routes (VRF %s)", rip->vrf_name);
      46             : 
      47             :         /* Clear received RIP routes */
      48           0 :         for (rp = route_top(rip->table); rp; rp = route_next(rp)) {
      49           0 :                 struct list *list;
      50           0 :                 struct listnode *listnode;
      51           0 :                 struct rip_info *rinfo;
      52             : 
      53           0 :                 list = rp->info;
      54           0 :                 if (!list)
      55           0 :                         continue;
      56             : 
      57           0 :                 for (ALL_LIST_ELEMENTS_RO(list, listnode, rinfo)) {
      58           0 :                         if (!rip_route_rte(rinfo))
      59           0 :                                 continue;
      60             : 
      61           0 :                         if (CHECK_FLAG(rinfo->flags, RIP_RTF_FIB))
      62           0 :                                 rip_zebra_ipv4_delete(rip, rp);
      63             :                         break;
      64             :                 }
      65             : 
      66           0 :                 if (rinfo) {
      67           0 :                         THREAD_OFF(rinfo->t_timeout);
      68           0 :                         THREAD_OFF(rinfo->t_garbage_collect);
      69           0 :                         listnode_delete(list, rinfo);
      70           0 :                         rip_info_free(rinfo);
      71             :                 }
      72             : 
      73           0 :                 if (list_isempty(list)) {
      74           0 :                         list_delete(&list);
      75           0 :                         rp->info = NULL;
      76           0 :                         route_unlock_node(rp);
      77             :                 }
      78             :         }
      79           0 : }
      80             : 
      81           0 : int clear_rip_route_rpc(struct nb_cb_rpc_args *args)
      82             : {
      83           0 :         struct rip *rip;
      84           0 :         struct yang_data *yang_vrf;
      85             : 
      86           0 :         yang_vrf = yang_data_list_find(args->input, "%s/%s", args->xpath,
      87             :                                        "input/vrf");
      88           0 :         if (yang_vrf) {
      89           0 :                 rip = rip_lookup_by_vrf_name(yang_vrf->value);
      90           0 :                 if (rip)
      91           0 :                         clear_rip_route(rip);
      92             :         } else {
      93           0 :                 struct vrf *vrf;
      94             : 
      95           0 :                 RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) {
      96           0 :                         rip = vrf->info;
      97           0 :                         if (!rip)
      98           0 :                                 continue;
      99             : 
     100           0 :                         clear_rip_route(rip);
     101             :                 }
     102             :         }
     103             : 
     104           0 :         return NB_OK;
     105             : }