1 /* $OpenBSD: if_etherbridge.h,v 1.5 2024/11/04 00:13:15 jsg Exp $ */ 2 3 /* 4 * Copyright (c) 2018, 2021 David Gwynne <dlg@openbsd.org> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #ifndef _NET_ETHERBRIDGE_H_ 20 #define _NET_ETHERBRIDGE_H_ 21 22 #define ETHERBRIDGE_TABLE_BITS 8 23 #define ETHERBRIDGE_TABLE_SIZE (1U << ETHERBRIDGE_TABLE_BITS) 24 #define ETHERBRIDGE_TABLE_MASK (ETHERBRIDGE_TABLE_SIZE - 1) 25 26 struct etherbridge_ops { 27 int (*eb_op_port_eq)(void *, void *, void *); 28 void *(*eb_op_port_take)(void *, void *); 29 void (*eb_op_port_rele)(void *, void *); 30 size_t (*eb_op_port_ifname)(void *, char *, size_t, void *); 31 void (*eb_op_port_sa)(void *, struct sockaddr_storage *, void *); 32 }; 33 34 struct etherbridge; 35 36 struct eb_entry { 37 SMR_TAILQ_ENTRY(eb_entry) ebe_lentry; 38 union { 39 RBT_ENTRY(eb_entry) _ebe_tentry; 40 TAILQ_ENTRY(eb_entry) _ebe_qentry; 41 } _ebe_entries; 42 #define ebe_tentry _ebe_entries._ebe_tentry 43 #define ebe_qentry _ebe_entries._ebe_qentry 44 45 uint64_t ebe_addr; 46 void *ebe_port; 47 unsigned int ebe_type; 48 #define EBE_DYNAMIC 0x0 49 #define EBE_STATIC 0x1 50 #define EBE_DEAD 0xdead 51 time_t ebe_age; 52 53 struct etherbridge *ebe_etherbridge; 54 struct smr_entry ebe_smr_entry; 55 }; 56 57 SMR_TAILQ_HEAD(eb_list, eb_entry); 58 RBT_HEAD(eb_tree, eb_entry); 59 TAILQ_HEAD(eb_queue, eb_entry); 60 61 struct etherbridge { 62 const char *eb_name; 63 const struct etherbridge_ops *eb_ops; 64 void *eb_cookie; 65 66 struct mutex eb_lock; 67 unsigned int eb_num; 68 unsigned int eb_max; 69 int eb_max_age; /* seconds */ 70 struct timeout eb_tmo_age; 71 72 struct eb_list *eb_table; 73 struct eb_tree eb_tree; 74 75 }; 76 77 int etherbridge_init(struct etherbridge *, const char *, 78 const struct etherbridge_ops *, void *); 79 int etherbridge_up(struct etherbridge *); 80 int etherbridge_down(struct etherbridge *); 81 void etherbridge_destroy(struct etherbridge *); 82 83 void etherbridge_map(struct etherbridge *, void *, uint64_t); 84 void etherbridge_map_ea(struct etherbridge *, void *, 85 const struct ether_addr *); 86 void *etherbridge_resolve(struct etherbridge *, uint64_t); 87 void *etherbridge_resolve_ea(struct etherbridge *, 88 const struct ether_addr *); 89 void etherbridge_detach_port(struct etherbridge *, void *); 90 91 /* ioctl support */ 92 int etherbridge_set_max(struct etherbridge *, struct ifbrparam *); 93 int etherbridge_get_max(struct etherbridge *, struct ifbrparam *); 94 int etherbridge_set_tmo(struct etherbridge *, struct ifbrparam *); 95 int etherbridge_get_tmo(struct etherbridge *, struct ifbrparam *); 96 int etherbridge_rtfind(struct etherbridge *, struct ifbaconf *); 97 int etherbridge_add_addr(struct etherbridge *, void *, 98 const struct ether_addr *, unsigned int); 99 int etherbridge_del_addr(struct etherbridge *, const struct ether_addr *); 100 void etherbridge_flush(struct etherbridge *, uint32_t); 101 102 #endif /* _NET_ETHERBRIDGE_H_ */ 103