if_lagg.h revision 253314 
1/*	$OpenBSD: if_trunk.h,v 1.11 2007/01/31 06:20:19 reyk Exp $	*/
2
3/*
4 * Copyright (c) 2005, 2006 Reyk Floeter <reyk@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 * $FreeBSD: head/sys/net/if_lagg.h 253314 2013-07-13 04:25:03Z adrian $
19 */
20
21#ifndef _NET_LAGG_H
22#define _NET_LAGG_H
23
24/*
25 * Global definitions
26 */
27
28#define	LAGG_MAX_PORTS		32	/* logically */
29#define	LAGG_MAX_NAMESIZE	32	/* name of a protocol */
30#define	LAGG_MAX_STACKING	4	/* maximum number of stacked laggs */
31
32/* Lagg flags */
33#define	LAGG_F_HASHL2		0x00000001	/* hash layer 2 */
34#define	LAGG_F_HASHL3		0x00000002	/* hash layer 3 */
35#define	LAGG_F_HASHL4		0x00000004	/* hash layer 4 */
36#define	LAGG_F_HASHMASK		0x00000007
37
38/* Port flags */
39#define	LAGG_PORT_SLAVE		0x00000000	/* normal enslaved port */
40#define	LAGG_PORT_MASTER	0x00000001	/* primary port */
41#define	LAGG_PORT_STACK		0x00000002	/* stacked lagg port */
42#define	LAGG_PORT_ACTIVE	0x00000004	/* port is active */
43#define	LAGG_PORT_COLLECTING	0x00000008	/* port is receiving frames */
44#define	LAGG_PORT_DISTRIBUTING	0x00000010	/* port is sending frames */
45#define	LAGG_PORT_DISABLED	0x00000020	/* port is disabled */
46#define	LAGG_PORT_BITS		"\20\01MASTER\02STACK\03ACTIVE\04COLLECTING" \
47				  "\05DISTRIBUTING\06DISABLED"
48
49/* Supported lagg PROTOs */
50#define	LAGG_PROTO_NONE		0	/* no lagg protocol defined */
51#define	LAGG_PROTO_ROUNDROBIN	1	/* simple round robin */
52#define	LAGG_PROTO_FAILOVER	2	/* active failover */
53#define	LAGG_PROTO_LOADBALANCE	3	/* loadbalance */
54#define	LAGG_PROTO_LACP		4	/* 802.3ad lacp */
55#define	LAGG_PROTO_ETHERCHANNEL	5	/* Cisco FEC */
56#define	LAGG_PROTO_MAX		6
57
58struct lagg_protos {
59	const char		*lpr_name;
60	int			lpr_proto;
61};
62
63#define	LAGG_PROTO_DEFAULT	LAGG_PROTO_FAILOVER
64#define LAGG_PROTOS	{						\
65	{ "failover",		LAGG_PROTO_FAILOVER },			\
66	{ "fec",		LAGG_PROTO_ETHERCHANNEL },		\
67	{ "lacp",		LAGG_PROTO_LACP },			\
68	{ "loadbalance",	LAGG_PROTO_LOADBALANCE },		\
69	{ "roundrobin",		LAGG_PROTO_ROUNDROBIN },		\
70	{ "none",		LAGG_PROTO_NONE },			\
71	{ "default",		LAGG_PROTO_DEFAULT }			\
72}
73
74/*
75 * lagg ioctls.
76 */
77
78/*
79 * LACP current operational parameters structure.
80 */
81struct lacp_opreq {
82	uint16_t		actor_prio;
83	uint8_t			actor_mac[ETHER_ADDR_LEN];
84	uint16_t		actor_key;
85	uint16_t		actor_portprio;
86	uint16_t		actor_portno;
87	uint8_t			actor_state;
88	uint16_t		partner_prio;
89	uint8_t			partner_mac[ETHER_ADDR_LEN];
90	uint16_t		partner_key;
91	uint16_t		partner_portprio;
92	uint16_t		partner_portno;
93	uint8_t			partner_state;
94};
95
96/* lagg port settings */
97struct lagg_reqport {
98	char			rp_ifname[IFNAMSIZ];	/* name of the lagg */
99	char			rp_portname[IFNAMSIZ];	/* name of the port */
100	u_int32_t		rp_prio;		/* port priority */
101	u_int32_t		rp_flags;		/* port flags */
102	union {
103		struct lacp_opreq rpsc_lacp;
104	} rp_psc;
105#define rp_lacpreq	rp_psc.rpsc_lacp
106};
107
108#define	SIOCGLAGGPORT		_IOWR('i', 140, struct lagg_reqport)
109#define	SIOCSLAGGPORT		 _IOW('i', 141, struct lagg_reqport)
110#define	SIOCSLAGGDELPORT	 _IOW('i', 142, struct lagg_reqport)
111
112/* lagg, ports and options */
113struct lagg_reqall {
114	char			ra_ifname[IFNAMSIZ];	/* name of the lagg */
115	u_int			ra_proto;		/* lagg protocol */
116
117	size_t			ra_size;		/* size of buffer */
118	struct lagg_reqport	*ra_port;		/* allocated buffer */
119	int			ra_ports;		/* total port count */
120	union {
121		struct lacp_opreq rpsc_lacp;
122	} ra_psc;
123#define ra_lacpreq	ra_psc.rpsc_lacp
124};
125
126#define	SIOCGLAGG		_IOWR('i', 143, struct lagg_reqall)
127#define	SIOCSLAGG		 _IOW('i', 144, struct lagg_reqall)
128
129struct lagg_reqflags {
130	char			rf_ifname[IFNAMSIZ];	/* name of the lagg */
131	uint32_t		rf_flags;		/* lagg protocol */
132};
133
134#define	SIOCGLAGGFLAGS		_IOWR('i', 145, struct lagg_reqflags)
135#define	SIOCSLAGGHASH		 _IOW('i', 146, struct lagg_reqflags)
136
137#ifdef _KERNEL
138
139#include <sys/counter.h>
140
141/*
142 * Internal kernel part
143 */
144
145#define	lp_ifname		lp_ifp->if_xname	/* interface name */
146#define	lp_link_state		lp_ifp->if_link_state	/* link state */
147
148#define	LAGG_PORTACTIVE(_tp)	(					\
149	((_tp)->lp_link_state == LINK_STATE_UP) &&			\
150	((_tp)->lp_ifp->if_flags & IFF_UP)				\
151)
152
153struct lagg_ifreq {
154	union {
155		struct ifreq ifreq;
156		struct {
157			char ifr_name[IFNAMSIZ];
158			struct sockaddr_storage ifr_ss;
159		} ifreq_storage;
160	} ifreq;
161};
162
163#define	sc_ifflags		sc_ifp->if_flags		/* flags */
164#define	sc_ifname		sc_ifp->if_xname		/* name */
165#define	sc_capabilities		sc_ifp->if_capabilities	/* capabilities */
166
167#define	IFCAP_LAGG_MASK		0xffff0000	/* private capabilities */
168#define	IFCAP_LAGG_FULLDUPLEX	0x00010000	/* full duplex with >1 ports */
169
170/* Private data used by the loadbalancing protocol */
171struct lagg_lb {
172	u_int32_t		lb_key;
173	struct lagg_port	*lb_ports[LAGG_MAX_PORTS];
174};
175
176struct lagg_mc {
177	struct ifmultiaddr      *mc_ifma;
178	SLIST_ENTRY(lagg_mc)	mc_entries;
179};
180
181/* List of interfaces to have the MAC address modified */
182struct lagg_llq {
183	struct ifnet		*llq_ifp;
184	uint8_t			llq_lladdr[ETHER_ADDR_LEN];
185	SLIST_ENTRY(lagg_llq)	llq_entries;
186};
187
188struct lagg_softc {
189	struct ifnet			*sc_ifp;	/* virtual interface */
190	struct rwlock			sc_mtx;
191	int				sc_proto;	/* lagg protocol */
192	u_int				sc_count;	/* number of ports */
193	u_int				sc_active;	/* active port count */
194	u_int				sc_flapping;	/* number of flapping
195							 * events */
196	struct lagg_port		*sc_primary;	/* primary port */
197	struct ifmedia			sc_media;	/* media config */
198	caddr_t				sc_psc;		/* protocol data */
199	uint32_t			sc_seq;		/* sequence counter */
200	uint32_t			sc_flags;
201
202	counter_u64_t			sc_ipackets;
203	counter_u64_t			sc_opackets;
204	counter_u64_t			sc_ibytes;
205	counter_u64_t			sc_obytes;
206
207	SLIST_HEAD(__tplhd, lagg_port)	sc_ports;	/* list of interfaces */
208	SLIST_ENTRY(lagg_softc)	sc_entries;
209
210	struct task			sc_lladdr_task;
211	SLIST_HEAD(__llqhd, lagg_llq)	sc_llq_head;	/* interfaces to program
212							   the lladdr on */
213
214	/* lagg protocol callbacks */
215	int	(*sc_detach)(struct lagg_softc *);
216	int	(*sc_start)(struct lagg_softc *, struct mbuf *);
217	struct mbuf *(*sc_input)(struct lagg_softc *, struct lagg_port *,
218		    struct mbuf *);
219	int	(*sc_port_create)(struct lagg_port *);
220	void	(*sc_port_destroy)(struct lagg_port *);
221	void	(*sc_linkstate)(struct lagg_port *);
222	void	(*sc_init)(struct lagg_softc *);
223	void	(*sc_stop)(struct lagg_softc *);
224	void	(*sc_lladdr)(struct lagg_softc *);
225	void	(*sc_req)(struct lagg_softc *, caddr_t);
226	void	(*sc_portreq)(struct lagg_port *, caddr_t);
227	eventhandler_tag vlan_attach;
228	eventhandler_tag vlan_detach;
229	struct callout			sc_callout;
230	struct sysctl_ctx_list		ctx;		/* sysctl variables */
231	int				use_flowid;	/* use M_FLOWID */
232};
233
234struct lagg_port {
235	struct ifnet			*lp_ifp;	/* physical interface */
236	struct lagg_softc		*lp_softc;	/* parent lagg */
237	uint8_t				lp_lladdr[ETHER_ADDR_LEN];
238
239	u_char				lp_iftype;	/* interface type */
240	uint32_t			lp_prio;	/* port priority */
241	uint32_t			lp_flags;	/* port flags */
242	int				lp_ifflags;	/* saved ifp flags */
243	void				*lh_cookie;	/* if state hook */
244	caddr_t				lp_psc;		/* protocol data */
245	int				lp_detaching;	/* ifnet is detaching */
246
247	SLIST_HEAD(__mclhd, lagg_mc)	lp_mc_head;	/* multicast addresses */
248
249	/* Redirected callbacks */
250	int	(*lp_ioctl)(struct ifnet *, u_long, caddr_t);
251	int	(*lp_output)(struct ifnet *, struct mbuf *,
252		     const struct sockaddr *, struct route *);
253
254	SLIST_ENTRY(lagg_port)		lp_entries;
255};
256
257#define	LAGG_LOCK_INIT(_sc)	rw_init(&(_sc)->sc_mtx, "if_lagg rwlock")
258#define	LAGG_LOCK_DESTROY(_sc)	rw_destroy(&(_sc)->sc_mtx)
259#define	LAGG_RLOCK(_sc)		rw_rlock(&(_sc)->sc_mtx)
260#define	LAGG_WLOCK(_sc)		rw_wlock(&(_sc)->sc_mtx)
261#define	LAGG_RUNLOCK(_sc)	rw_runlock(&(_sc)->sc_mtx)
262#define	LAGG_WUNLOCK(_sc)	rw_wunlock(&(_sc)->sc_mtx)
263#define	LAGG_RLOCK_ASSERT(_sc)	rw_assert(&(_sc)->sc_mtx, RA_RLOCKED)
264#define	LAGG_WLOCK_ASSERT(_sc)	rw_assert(&(_sc)->sc_mtx, RA_WLOCKED)
265
266extern struct mbuf *(*lagg_input_p)(struct ifnet *, struct mbuf *);
267extern void	(*lagg_linkstate_p)(struct ifnet *, int );
268
269int		lagg_enqueue(struct ifnet *, struct mbuf *);
270uint32_t	lagg_hashmbuf(struct lagg_softc *, struct mbuf *, uint32_t);
271
272SYSCTL_DECL(_net_link_lagg);
273
274#endif /* _KERNEL */
275
276#endif /* _NET_LAGG_H */
277