diff options
Diffstat (limited to 'pimd/pim_autorp.h')
| -rw-r--r-- | pimd/pim_autorp.h | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/pimd/pim_autorp.h b/pimd/pim_autorp.h new file mode 100644 index 000000000..a0b029d00 --- /dev/null +++ b/pimd/pim_autorp.h @@ -0,0 +1,158 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * pim_autorp.h: PIM Auto RP handling related + * + * Copyright (C) 20224 ATCorp. + * Nathan Bahr + */ + +#ifndef __PIM_AUTORP_H__ +#define __PIM_AUTORP_H__ + +#include <typesafe.h> + +#define AUTORP_VERSION 1 +#define AUTORP_ANNOUNCEMENT_TYPE 1 +#define AUTORP_DISCOVERY_TYPE 2 +#define PIM_VUNKNOWN 0 +#define PIM_V1 1 +#define PIM_V2 2 +#define PIM_V1_2 3 + +#define DEFAULT_ANNOUNCE_INTERVAL 60 +#define DEFAULT_ANNOUNCE_SCOPE 31 +#define DEFAULT_ANNOUNCE_HOLDTIME -1 + +PREDECL_SORTLIST_UNIQ(pim_autorp_rp); + +struct autorp_pkt_grp { +#if __BYTE_ORDER == __LITTLE_ENDIAN + uint8_t negprefix : 1; + uint8_t reserved : 7; +#elif __BYTE_ORDER == __BIG_ENDIAN + uint8_t reserved : 7; + uint8_t negprefix : 1; +#else +#error "Please fix <bits/endian.h>" +#endif + uint8_t masklen; + uint32_t addr; +} __attribute__((__packed__)); + +struct autorp_pkt_rp { + uint32_t addr; +#if __BYTE_ORDER == __LITTLE_ENDIAN + uint8_t pimver : 2; + uint8_t reserved : 6; +#elif __BYTE_ORDER == __BIG_ENDIAN + uint8_t reserved : 6; + uint8_t pimver : 2; +#else +#error "Please fix <bits/endian.h>" +#endif + uint8_t grpcnt; +} __attribute__((__packed__)); + +struct autorp_pkt_hdr { +#if __BYTE_ORDER == __LITTLE_ENDIAN + uint8_t type : 4; + uint8_t version : 4; +#elif __BYTE_ORDER == __BIG_ENDIAN + uint8_t version : 4; + uint8_t type : 4; +#else +#error "Please fix <bits/endian.h>" +#endif + uint8_t rpcnt; + uint16_t holdtime; + uint32_t reserved; +} __attribute__((__packed__)); + +#define MIN_AUTORP_PKT_SZ \ + (sizeof(struct autorp_pkt_hdr) + sizeof(struct autorp_pkt_rp) + \ + sizeof(struct autorp_pkt_grp)) + +struct pim_autorp_rp { + struct pim_autorp *autorp; + struct in_addr addr; + uint16_t holdtime; + struct event *hold_timer; + struct prefix grp; + char grplist[32]; + struct pim_autorp_rp_item list; +}; + +struct pim_autorp { + /* backpointer to pim instance */ + struct pim_instance *pim; + + /* UDP socket bound to AutoRP port, used for sending and receiving all AutoRP packets */ + int sock; + + /* Event for reading AutoRP packets */ + struct event *read_event; + + /* Event for sending announcement packets */ + struct event *announce_timer; + + /* Event for sending discovery packets*/ + /* struct event *discovery_timer; */ + + /* Flag enabling reading discovery packets */ + bool do_discovery; + + /* Flag enabling mapping agent (reading announcements and sending discovery)*/ + /* bool do_mapping; */ + + /* List of RP's in received discovery packets */ + struct pim_autorp_rp_head discovery_rp_list; + + /* List of configured candidate RP's to send in announcement packets */ + struct pim_autorp_rp_head candidate_rp_list; + + /* List of announced RP's to send in discovery packets */ + /* struct pim_autorp_rp_head mapping_rp_list; */ + + /* Packet parameters for sending announcement packets */ + uint8_t announce_scope; + uint16_t announce_interval; + int32_t announce_holdtime; + + /* Pre-built announcement packet, only changes when configured RP's or packet parameters change */ + uint8_t *annouce_pkt; + uint16_t annouce_pkt_sz; + + /* TODO: Packet parameters for sending discovery packets + * int discovery_scope; + * int discovery_interval; + * int discovery_holdtime; + */ +}; + +#define AUTORP_GRPLEN 6 +#define AUTORP_RPLEN 6 +#define AUTORP_HDRLEN 8 + +bool pim_autorp_rm_candidate_rp(struct pim_instance *pim, pim_addr rpaddr); +void pim_autorp_add_candidate_rp_group(struct pim_instance *pim, + pim_addr rpaddr, struct prefix group); +bool pim_autorp_rm_candidate_rp_group(struct pim_instance *pim, pim_addr rpaddr, + struct prefix group); +void pim_autorp_add_candidate_rp_plist(struct pim_instance *pim, + pim_addr rpaddr, const char *plist); +bool pim_autorp_rm_candidate_rp_plist(struct pim_instance *pim, pim_addr rpaddr, + const char *plist); +void pim_autorp_announce_scope(struct pim_instance *pim, uint8_t scope); +void pim_autorp_announce_interval(struct pim_instance *pim, uint16_t interval); +void pim_autorp_announce_holdtime(struct pim_instance *pim, int32_t holdtime); +void pim_autorp_add_ifp(struct interface *ifp); +void pim_autorp_rm_ifp(struct interface *ifp); +void pim_autorp_start_discovery(struct pim_instance *pim); +void pim_autorp_stop_discovery(struct pim_instance *pim); +void pim_autorp_init(struct pim_instance *pim); +void pim_autorp_finish(struct pim_instance *pim); +int pim_autorp_config_write(struct pim_instance *pim, struct vty *vty); +void pim_autorp_show_autorp(struct vty *vty, struct pim_instance *pim, + json_object *json); + +#endif |