--- /dev/null
+/*
+ * 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);
+}
--- /dev/null
+/*
+ * 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
+ */
+
+#ifndef OSPF6_GR_HELPER_H
+#define OSPF6_GR_HELPER_H
+
+#define OSPF6_GR_NOT_HELPER 0
+#define OSPF6_GR_ACTIVE_HELPER 1
+
+#define OSPF6_GR_HELPER_NO_LSACHECK 0
+#define OSPF6_GR_HELPER_LSACHECK 1
+
+#define OSPF6_MAX_GRACE_INTERVAL 1800
+#define OSPF6_MIN_GRACE_INTERVAL 1
+
+enum ospf6_helper_exit_reason {
+ OSPF6_GR_HELPER_EXIT_NONE = 0,
+ OSPF6_GR_HELPER_INPROGRESS,
+ OSPF6_GR_HELPER_TOPO_CHG,
+ OSPF6_GR_HELPER_GRACE_TIMEOUT,
+ OSPF6_GR_HELPER_COMPLETED
+};
+
+enum ospf6_gr_restart_reason {
+ OSPF6_GR_UNKNOWN_RESTART = 0,
+ OSPF6_GR_SW_RESTART = 1,
+ OSPF6_GR_SW_UPGRADE = 2,
+ OSPF6_GR_SWITCH_REDUNDANT_CARD = 3,
+ OSPF6_GR_INVALID_REASON_CODE = 4
+};
+
+enum ospf6_gr_helper_rejected_reason {
+ OSPF6_HELPER_REJECTED_NONE,
+ OSPF6_HELPER_SUPPORT_DISABLED,
+ OSPF6_HELPER_NOT_A_VALID_NEIGHBOUR,
+ OSPF6_HELPER_PLANNED_ONLY_RESTART,
+ OSPF6_HELPER_TOPO_CHANGE_RTXMT_LIST,
+ OSPF6_HELPER_LSA_AGE_MORE
+};
+
+#ifdef roundup
+#define ROUNDUP(val, gran) roundup(val, gran)
+#else /* roundup */
+#define ROUNDUP(val, gran) (((val)-1 | (gran)-1) + 1)
+#endif /* roundup */
+
+/*
+ * Generic TLV (type, length, value) macros
+ */
+struct tlv_header {
+ uint16_t type; /* Type of Value */
+ uint16_t length; /* Length of Value portion only, in bytes */
+};
+
+#define TLV_HDR_SIZE (sizeof(struct tlv_header))
+
+#define TLV_BODY_SIZE(tlvh) (ROUNDUP(ntohs((tlvh)->length), sizeof(uint32_t)))
+
+#define TLV_SIZE(tlvh) (TLV_HDR_SIZE + TLV_BODY_SIZE(tlvh))
+
+#define TLV_HDR_TOP(lsah) \
+ (struct tlv_header *)((char *)(lsah) + OSPF6_LSA_HEADER_SIZE)
+
+#define TLV_HDR_NEXT(tlvh) \
+ (struct tlv_header *)((char *)(tlvh) + TLV_SIZE(tlvh))
+
+/* Ref RFC5187 appendex-A */
+/* Grace period TLV */
+#define GRACE_PERIOD_TYPE 1
+#define GRACE_PERIOD_LENGTH 4
+struct grace_tlv_graceperiod {
+ struct tlv_header header;
+ uint32_t interval;
+};
+#define GRACE_PERIOD_TLV_SIZE sizeof(struct grace_tlv_graceperiod)
+
+/* Restart reason TLV */
+#define RESTART_REASON_TYPE 2
+#define RESTART_REASON_LENGTH 1
+struct grace_tlv_restart_reason {
+ struct tlv_header header;
+ uint8_t reason;
+ uint8_t reserved[3];
+};
+#define GRACE_RESTART_REASON_TLV_SIZE sizeof(struct grace_tlv_restart_reason)
+
+#define OSPF6_GRACE_LSA_MIN_SIZE \
+ GRACE_PERIOD_TLV_SIZE + GRACE_RESTART_REASON_TLV_SIZE
+
+struct advRtr {
+ in_addr_t advRtrAddr;
+};
+
+#define OSPF6_HELPER_ENABLE_RTR_COUNT(ospf) \
+ (ospf6->ospf6_helper_cfg.enableRtrList->count)
+
+/* Check , it is a planned restart */
+#define OSPF6_GR_IS_PLANNED_RESTART(reason) \
+ ((reason == OSPF6_GR_SW_RESTART) || (reason == OSPF6_GR_SW_UPGRADE))
+
+/* Check the router is HELPER for current neighbour */
+#define OSPF6_GR_IS_ACTIVE_HELPER(N) \
+ ((N)->grHelperInfo.grHelper_status == OSPF6_GR_ACTIVE_HELPER)
+
+/* Check the LSA is GRACE LSA */
+#define IS_GRACE_LSA(lsa) (ntohs(lsa->header->type) == OSPF6_LSTYPE_GRACE_LSA)
+
+/* Check neighbour is in FULL state */
+#define IS_NBR_STATE_FULL(nbr) (nbr->state == OSPF6_NEIGHBOR_FULL)
+
+extern const char *ospf6_exit_reason_desc[];
+extern const char *ospf6_restart_reason_desc[];
+extern const char *ospf6_rejected_reason_desc[];
+
+extern void ospf6_gr_helper_init(struct ospf6 *ospf6);
+extern void ospf6_gr_helper_deinit(struct ospf6 *ospf6);
+#endif /* OSPF6_GR_HELPER_H */
#include "ospf6_intra.h"
#include "ospf6_spf.h"
#include "ospf6d.h"
+#include "ospf6_gr_helper.h"
#include "lib/json.h"
#include "ospf6_nssa.h"
o->oi_write_q = list_new();
+ ospf6_gr_helper_init(o);
QOBJ_REG(o, ospf6);
/* Make ospf protocol socket. */
QOBJ_UNREG(o);
+ ospf6_gr_helper_deinit(o);
ospf6_flush_self_originated_lsas_now(o);
ospf6_disable(o);
ospf6_del(o);
ospf6_distance_config_write(vty, ospf6);
ospf6_distribute_config_write(vty, ospf6);
ospf6_asbr_summary_config_write(vty, ospf6);
-
vty_out(vty, "!\n");
}
return 0;
vrf_name = VRF_DEFAULT_NAME; \
}
+#define OSPF6_FALSE false
+#define OSPF6_TRUE true
+#define OSPF6_SUCCESS 1
+#define OSPF6_FAILURE 0
+#define OSPF6_INVALID -1
+
extern struct zebra_privs_t ospf6d_privs;
/* Function Prototypes */
ospf6d/ospf6_area.c \
ospf6d/ospf6_bfd.c \
ospf6d/ospf6_flood.c \
+ ospf6d/ospf6_gr_helper.c \
ospf6d/ospf6_interface.c \
ospf6d/ospf6_intra.c \
ospf6d/ospf6_lsa.c \
ospf6d/ospf6_routemap_nb_config.c \
ospf6d/ospf6_bfd.c \
ospf6d/ospf6_flood.c \
+ ospf6d/ospf6_gr_helper.c \
ospf6d/ospf6_interface.c \
ospf6d/ospf6_intra.c \
ospf6d/ospf6_lsa.c \
ospf6d/ospf6_asbr.h \
ospf6d/ospf6_bfd.h \
ospf6d/ospf6_flood.h \
+ ospf6d/ospf6_gr_helper.h \
ospf6d/ospf6_interface.h \
ospf6d/ospf6_intra.h \
ospf6d/ospf6_lsa.h \
ospf6d/ospf6_top.c \
ospf6d/ospf6_asbr.c \
ospf6d/ospf6_lsa.c \
+ ospf6d/ospf6_gr_helper.c \
# end
nodist_ospf6d_ospf6d_SOURCES = \
projects / mirror / frr.git / commitdiff