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Diffstat (limited to '')
-rw-r--r-- | pbrd/pbr_nht.h | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/pbrd/pbr_nht.h b/pbrd/pbr_nht.h new file mode 100644 index 0000000..ecc92cc --- /dev/null +++ b/pbrd/pbr_nht.h @@ -0,0 +1,157 @@ +/* + * PBR-nht Header + * Copyright (C) 2018 Cumulus Networks, Inc. + * Donald Sharp + * + * FRR 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. + * + * FRR 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 __PBR_NHT_H__ +#define __PBR_NHT_H__ + +#include <lib/zclient.h> +#include <lib/nexthop_group.h> + +#include "pbr_map.h" +#include "json.h" + +#define PBR_NHC_NAMELEN PBR_MAP_NAMELEN + 10 + +extern struct hash *pbr_nhg_hash; + +struct pbr_nexthop_group_cache { + char name[PBR_NHC_NAMELEN]; + + uint32_t table_id; + + struct hash *nhh; + + /* + * If all nexthops are considered valid + */ + bool valid; + + bool installed; +}; + +struct pbr_nexthop_cache { + struct pbr_nexthop_group_cache *parent; + + char vrf_name[VRF_NAMSIZ + 1]; + char intf_name[INTERFACE_NAMSIZ + 1]; + + struct nexthop nexthop; + + bool looked_at; + bool valid; + bool nhr_matched; +}; + +extern void pbr_nht_write_table_range(struct vty *vty); +#define PBR_NHT_DEFAULT_LOW_TABLEID 10000 +#define PBR_NHT_DEFAULT_HIGH_TABLEID 11000 +extern void pbr_nht_set_tableid_range(uint32_t low, uint32_t high); + +/* + * Find and reserve the next available table for installation; + * Sequential calls to this function will reserve sequential table numbers + * until the configured range is exhausted; calls made after exhaustion always + * return 0 + */ +extern uint32_t +pbr_nht_reserve_next_table_id(struct pbr_nexthop_group_cache *nhgc); +/* + * Get the next tableid to use for installation to kernel + */ +extern uint32_t pbr_nht_find_next_unallocated_table_id(void); +/* + * Calculate where the next table representing a nhg will go in kernel + */ +extern void pbr_nht_update_next_unallocated_table_id(void); +/* + * Indicate if there are free spots to install a table to kernel within the + * configured PBR table range + */ +extern bool pbr_nht_has_unallocated_table(void); +/* + * Get the next rule number to use for installation + */ +extern void pbr_nht_write_rule_range(struct vty *vty); + +#define PBR_NHT_DEFAULT_LOW_RULE 300 +#define PBR_NHT_DEFAULT_HIGH_RULE 1300 +extern void pbr_nht_set_rule_range(uint32_t low, uint32_t high); + +extern uint32_t pbr_nht_get_next_rule(uint32_t seqno); + +extern void pbr_nhgroup_add_cb(const char *name); +extern void pbr_nhgroup_add_nexthop_cb(const struct nexthop_group_cmd *nhg, + const struct nexthop *nhop); +extern void pbr_nhgroup_del_nexthop_cb(const struct nexthop_group_cmd *nhg, + const struct nexthop *nhop); +extern void pbr_nhgroup_delete_cb(const char *name); + +extern bool pbr_nht_nexthop_valid(struct nexthop_group *nhg); +extern bool pbr_nht_nexthop_group_valid(const char *name); + +extern struct pbr_nexthop_group_cache *pbr_nht_add_group(const char *name); +extern void pbr_nht_change_group(const char *name); +extern void pbr_nht_delete_group(const char *name); + +extern void pbr_nht_set_seq_nhg_data(struct pbr_map_sequence *pbrms, + const struct nexthop_group_cmd *nhgc); +extern void pbr_nht_set_seq_nhg(struct pbr_map_sequence *pbrms, + const char *name); + +extern void pbr_nht_add_individual_nexthop(struct pbr_map_sequence *pbrms, + const struct nexthop *nhop); +extern void pbr_nht_delete_individual_nexthop(struct pbr_map_sequence *pbrms); +/* + * Given the tableid of the installed default + * route, find the nexthop-group associated with + * it, then find all pbr-maps that use it and + * install/delete them as well. + */ +extern void pbr_nht_route_installed_for_table(uint32_t table_id); +extern void pbr_nht_route_removed_for_table(uint32_t table_id); + +/* + * Given the nexthop group name, lookup the associated + * tableid with it + */ +extern uint32_t pbr_nht_get_table(const char *name); + +extern bool pbr_nht_get_installed(const char *name); + +extern char *pbr_nht_nexthop_make_name(char *name, size_t l, uint32_t seqno, + char *buffer); + +extern void pbr_nht_show_nexthop_group(struct vty *vty, const char *name); +extern void pbr_nht_json_nexthop_group(json_object *j, const char *name); + +/* + * When we get a callback from zebra about a nexthop changing + */ +extern void pbr_nht_nexthop_update(struct zapi_route *nhr); + +/* + * When we get a callback from zebra about an interface status update. + */ +extern void pbr_nht_nexthop_interface_update(struct interface *ifp); + +extern void pbr_nht_init(void); + +extern void pbr_nht_vrf_update(struct pbr_vrf *pbr_vrf); +extern void pbr_nht_interface_update(struct interface *ifp); +#endif |