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/* $OpenBSD: if_trunk.h,v 1.30 2020/07/22 02:16:02 dlg Exp $ */
/*
* Copyright (c) 2005, 2006, 2007 Reyk Floeter <reyk@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _NET_TRUNK_H
#define _NET_TRUNK_H
/*
* Global definitions
*/
#define TRUNK_MAX_PORTS 32 /* logically */
#define TRUNK_MAX_NAMESIZE 32 /* name of a protocol */
#define TRUNK_MAX_STACKING 4 /* maximum number of stacked trunks */
/* Port flags */
#define TRUNK_PORT_SLAVE 0x00000000 /* normal enslaved port */
#define TRUNK_PORT_MASTER 0x00000001 /* primary port */
#define TRUNK_PORT_STACK 0x00000002 /* stacked trunk port */
#define TRUNK_PORT_ACTIVE 0x00000004 /* port is active */
#define TRUNK_PORT_COLLECTING 0x00000008 /* port is receiving frames */
#define TRUNK_PORT_DISTRIBUTING 0x00000010 /* port is sending frames */
#define TRUNK_PORT_DISABLED 0x00000020 /* port is disabled */
#define TRUNK_PORT_GLOBAL 0x80000000 /* IOCTL: global flag */
#define TRUNK_PORT_BITS "\20\01MASTER\02STACK\03ACTIVE" \
"\04COLLECTING\05DISTRIBUTING\06DISABLED"
/* Supported trunk PROTOs */
enum trunk_proto {
TRUNK_PROTO_NONE = 0, /* no trunk protocol defined */
TRUNK_PROTO_ROUNDROBIN = 1, /* simple round robin */
TRUNK_PROTO_FAILOVER = 2, /* active failover */
TRUNK_PROTO_LOADBALANCE = 3, /* loadbalance */
TRUNK_PROTO_BROADCAST = 4, /* broadcast */
TRUNK_PROTO_LACP = 5, /* 802.3ad LACP */
TRUNK_PROTO_MAX = 6
};
struct trunk_protos {
const char *tpr_name;
enum trunk_proto tpr_proto;
};
#define TRUNK_PROTO_DEFAULT TRUNK_PROTO_ROUNDROBIN
#define TRUNK_PROTOS { \
{ "roundrobin", TRUNK_PROTO_ROUNDROBIN }, \
{ "failover", TRUNK_PROTO_FAILOVER }, \
{ "lacp", TRUNK_PROTO_LACP }, \
{ "loadbalance", TRUNK_PROTO_LOADBALANCE }, \
{ "broadcast", TRUNK_PROTO_BROADCAST }, \
{ "none", TRUNK_PROTO_NONE }, \
{ "default", TRUNK_PROTO_DEFAULT } \
}
/*
* Trunk ioctls.
*/
/*
* LACP current operational parameters structure.
*/
struct lacp_opreq {
u_int16_t actor_prio;
u_int8_t actor_mac[ETHER_ADDR_LEN];
u_int16_t actor_key;
u_int16_t actor_portprio;
u_int16_t actor_portno;
u_int8_t actor_state;
u_int16_t partner_prio;
u_int8_t partner_mac[ETHER_ADDR_LEN];
u_int16_t partner_key;
u_int16_t partner_portprio;
u_int16_t partner_portno;
u_int8_t partner_state;
};
/* Trunk port settings */
struct trunk_reqport {
char rp_ifname[IFNAMSIZ]; /* name of the trunk */
char rp_portname[IFNAMSIZ]; /* name of the port */
u_int32_t rp_prio; /* port priority */
u_int32_t rp_flags; /* port flags */
union {
struct lacp_opreq rpsc_lacp;
} rp_psc;
#define rp_lacpreq rp_psc.rpsc_lacp
};
#define SIOCGTRUNKPORT _IOWR('i', 140, struct trunk_reqport)
#define SIOCSTRUNKPORT _IOW('i', 141, struct trunk_reqport)
#define SIOCSTRUNKDELPORT _IOW('i', 142, struct trunk_reqport)
/* Trunk, ports and options */
struct trunk_reqall {
char ra_ifname[IFNAMSIZ]; /* name of the trunk */
u_int ra_proto; /* trunk protocol */
size_t ra_size; /* size of buffer */
struct trunk_reqport *ra_port; /* allocated buffer */
int ra_ports; /* total port count */
union {
struct lacp_opreq rpsc_lacp;
} ra_psc;
#define ra_lacpreq ra_psc.rpsc_lacp
};
#define SIOCGTRUNK _IOWR('i', 143, struct trunk_reqall)
#define SIOCSTRUNK _IOW('i', 144, struct trunk_reqall)
/* LACP administrative options */
struct lacp_adminopts {
u_int8_t lacp_mode; /* active or passive */
u_int8_t lacp_timeout; /* fast or slow */
u_int16_t lacp_prio; /* system priority */
u_int16_t lacp_portprio; /* port priority */
u_int8_t lacp_ifqprio; /* ifq priority */
};
/* Trunk administrative options */
struct trunk_opts {
char to_ifname[IFNAMSIZ]; /* name of the trunk */
u_int to_proto; /* trunk protocol */
int to_opts; /* option bitmap */
#define TRUNK_OPT_NONE 0x00
#define TRUNK_OPT_LACP_MODE 0x01 /* set active bit */
#define TRUNK_OPT_LACP_TIMEOUT 0x02 /* set timeout bit */
#define TRUNK_OPT_LACP_SYS_PRIO 0x04 /* set sys_prio bit */
#define TRUNK_OPT_LACP_PORT_PRIO 0x08 /* set port_prio bit */
#define TRUNK_OPT_LACP_IFQ_PRIO 0x10 /* set ifq_prio bit */
union {
struct lacp_adminopts rpsc_lacp;
} to_psc;
#define to_lacpopts to_psc.rpsc_lacp
};
#define SIOCGTRUNKOPTS _IOWR('i', 145, struct trunk_opts)
#define SIOCSTRUNKOPTS _IOW('i', 146, struct trunk_opts)
#ifdef _KERNEL
/*
* Internal kernel part
*/
struct trunk_softc;
struct trunk_port {
struct ifnet *tp_if; /* physical interface */
struct trunk_softc *tp_trunk; /* parent trunk */
u_int8_t tp_lladdr[ETHER_ADDR_LEN];
caddr_t tp_psc; /* protocol data */
u_char tp_iftype; /* interface type */
u_int32_t tp_prio; /* port priority */
u_int32_t tp_flags; /* port flags */
struct task tp_ltask; /* if state hook */
struct task tp_dtask; /* if detach hook */
/* Redirected callbacks */
int (*tp_ioctl)(struct ifnet *, u_long, caddr_t);
int (*tp_output)(struct ifnet *, struct mbuf *, struct sockaddr *,
struct rtentry *);
void (*tp_input)(struct ifnet *, struct mbuf *);
SLIST_ENTRY(trunk_port) tp_entries;
};
#define tp_ifname tp_if->if_xname /* interface name */
#define tp_ifflags tp_if->if_flags /* interface flags */
#define tp_link_state tp_if->if_link_state /* link state */
#define tp_capabilities tp_if->if_capabilities /* capabilities */
#define TRUNK_PORTACTIVE(_tp) ( \
LINK_STATE_IS_UP((_tp)->tp_link_state) && \
(_tp)->tp_ifflags & IFF_UP)
struct trunk_mc {
union {
struct ether_multi *mcu_enm;
} mc_u;
struct sockaddr_storage mc_addr;
SLIST_ENTRY(trunk_mc) mc_entries;
};
#define mc_enm mc_u.mcu_enm
struct trunk_ifreq {
union {
struct ifreq ifreq;
struct {
char ifr_name[IFNAMSIZ];
struct sockaddr_storage ifr_ss;
} ifreq_storage;
} ifreq;
};
struct trunk_softc {
struct arpcom tr_ac; /* virtual interface */
enum trunk_proto tr_proto; /* trunk protocol */
u_int tr_count; /* number of ports */
struct trunk_port *tr_primary; /* primary port */
struct ifmedia tr_media; /* media config */
caddr_t tr_psc; /* protocol data */
SLIST_HEAD(__tplhd, trunk_port) tr_ports; /* list of interfaces */
SLIST_ENTRY(trunk_softc) tr_entries;
SLIST_HEAD(__mclhd, trunk_mc) tr_mc_head; /* multicast addresses */
/* Trunk protocol callbacks */
int (*tr_detach)(struct trunk_softc *);
int (*tr_start)(struct trunk_softc *, struct mbuf *);
int (*tr_input)(struct trunk_softc *, struct trunk_port *,
struct mbuf *);
int (*tr_port_create)(struct trunk_port *);
void (*tr_port_destroy)(struct trunk_port *);
void (*tr_linkstate)(struct trunk_port *);
void (*tr_init)(struct trunk_softc *);
void (*tr_stop)(struct trunk_softc *);
void (*tr_req)(struct trunk_softc *, caddr_t);
void (*tr_portreq)(struct trunk_port *, caddr_t);
};
#define tr_ifflags tr_ac.ac_if.if_flags /* flags */
#define tr_ifname tr_ac.ac_if.if_xname /* name */
#define tr_capabilities tr_ac.ac_if.if_capabilities /* capabilities */
#define tr_ifindex tr_ac.ac_if.if_index /* int index */
#define tr_lladdr tr_ac.ac_enaddr /* lladdr */
#define IFCAP_TRUNK_MASK 0xffff0000 /* private capabilities */
#define IFCAP_TRUNK_FULLDUPLEX 0x00010000 /* full duplex with >1 ports */
/* Private data used by the loadbalancing protocol */
struct trunk_lb {
SIPHASH_KEY lb_key;
struct trunk_port *lb_ports[TRUNK_MAX_PORTS];
};
int trunk_enqueue(struct ifnet *, struct mbuf *);
u_int32_t trunk_hashmbuf(struct mbuf *, SIPHASH_KEY *);
#endif /* _KERNEL */
#endif /* _NET_TRUNK_H */
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