diff options
Diffstat (limited to 'ospf6d/ospf6_gr_helper.c')
| -rw-r--r-- | ospf6d/ospf6_gr_helper.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/ospf6d/ospf6_gr_helper.c b/ospf6d/ospf6_gr_helper.c new file mode 100644 index 0000000000..0108423cee --- /dev/null +++ b/ospf6d/ospf6_gr_helper.c @@ -0,0 +1,155 @@ +/* + * OSPF6 Graceful Retsart helper functions. + * + * Copyright (C) 2021-22 Vmware, Inc. + * Rajesh Kumar Girada + * + * This file is part of GNU Zebra. + * + * GNU Zebra is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * GNU Zebra is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; see the file COPYING; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <zebra.h> + +#include "log.h" +#include "vty.h" +#include "command.h" +#include "prefix.h" +#include "stream.h" +#include "zclient.h" +#include "memory.h" +#include "table.h" +#include "lib/bfd.h" +#include "lib_errors.h" +#include "jhash.h" + +#include "ospf6_proto.h" +#include "ospf6_lsa.h" +#include "ospf6_lsdb.h" +#include "ospf6_route.h" +#include "ospf6_message.h" + +#include "ospf6_top.h" +#include "ospf6_area.h" +#include "ospf6_interface.h" +#include "ospf6_neighbor.h" +#include "ospf6_intra.h" +#include "ospf6d.h" +#include "ospf6_gr_helper.h" +#include "lib/json.h" +#ifndef VTYSH_EXTRACT_PL +#include "ospf6d/ospf6_gr_helper_clippy.c" +#endif + +DEFINE_MTYPE_STATIC(OSPF6D, OSPF6_GR_HELPER, "OSPF6 Graceful restart helper"); + +const char *ospf6_exit_reason_desc[] = { + "Unknown reason", "Helper inprogress", "Topology Change", + "Grace timer expiry", "Successful graceful restart", +}; + +const char *ospf6_restart_reason_desc[] = { + "Unknown restart", + "Software restart", + "Software reload/upgrade", + "Switch to redundant control processor", +}; + +const char *ospf6_rejected_reason_desc[] = { + "Unknown reason", + "Helper support disabled", + "Neighbour is not in FULL state", + "Supports only planned restart but received for unplanned", + "Topo change due to change in lsa rxmt list", + "LSA age is more than Grace interval", +}; + +static unsigned int ospf6_enable_rtr_hash_key(const void *data) +{ + const struct advRtr *rtr = data; + + return jhash_1word(rtr->advRtrAddr, 0); +} + +static bool ospf6_enable_rtr_hash_cmp(const void *d1, const void *d2) +{ + const struct advRtr *rtr1 = d1; + const struct advRtr *rtr2 = d2; + + return (rtr1->advRtrAddr == rtr2->advRtrAddr); +} + +static void *ospf6_enable_rtr_hash_alloc(void *p) +{ + struct advRtr *rid; + + rid = XCALLOC(MTYPE_OSPF6_GR_HELPER, sizeof(struct advRtr)); + rid->advRtrAddr = ((struct advRtr *)p)->advRtrAddr; + + return rid; +} + +static void ospf6_disable_rtr_hash_free(void *rtr) +{ + XFREE(MTYPE_OSPF6_GR_HELPER, rtr); +} + +static void ospf6_enable_rtr_hash_destroy(struct ospf6 *ospf6) +{ + if (ospf6->ospf6_helper_cfg.enable_rtr_list == NULL) + return; + + hash_clean(ospf6->ospf6_helper_cfg.enable_rtr_list, + ospf6_disable_rtr_hash_free); + hash_free(ospf6->ospf6_helper_cfg.enable_rtr_list); + ospf6->ospf6_helper_cfg.enable_rtr_list = NULL; +} + +/* + * Initilise GR helper config datastructer. + * + * ospf6 + * ospf6 pointer + * + * Returns: + * Nothing + */ +void ospf6_gr_helper_init(struct ospf6 *ospf6) +{ + ospf6->ospf6_helper_cfg.is_helper_supported = OSPF6_FALSE; + ospf6->ospf6_helper_cfg.strict_lsa_check = OSPF6_TRUE; + ospf6->ospf6_helper_cfg.only_planned_restart = OSPF6_FALSE; + ospf6->ospf6_helper_cfg.supported_grace_time = OSPF6_MAX_GRACE_INTERVAL; + ospf6->ospf6_helper_cfg.last_exit_reason = OSPF6_GR_HELPER_EXIT_NONE; + ospf6->ospf6_helper_cfg.active_restarter_cnt = 0; + + ospf6->ospf6_helper_cfg.enable_rtr_list = hash_create( + ospf6_enable_rtr_hash_key, ospf6_enable_rtr_hash_cmp, + "Ospf6 enable router hash"); +} + +/* + * De-Initilise GR helper config datastructer. + * + * ospf6 + * ospf6 pointer + * + * Returns: + * Nothing + */ +void ospf6_gr_helper_deinit(struct ospf6 *ospf6) +{ + ospf6_enable_rtr_hash_destroy(ospf6); +} |