if_lagg.h revision 287723 
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: stable/10/sys/net/if_lagg.h 287723 2015-09-12 20:36:39Z hrs $
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 */
50typedef enum {
51	LAGG_PROTO_NONE = 0,	/* no lagg protocol defined */
52	LAGG_PROTO_ROUNDROBIN,	/* simple round robin */
53	LAGG_PROTO_FAILOVER,	/* active failover */
54	LAGG_PROTO_LOADBALANCE,	/* loadbalance */
55	LAGG_PROTO_LACP,	/* 802.3ad lacp */
56	LAGG_PROTO_ETHERCHANNEL,/* Cisco FEC */
57	LAGG_PROTO_MAX,
58} lagg_proto;
59
60struct lagg_protos {
61	const char		*lpr_name;
62	lagg_proto		lpr_proto;
63};
64
65#define	LAGG_PROTO_DEFAULT	LAGG_PROTO_FAILOVER
66#define LAGG_PROTOS	{						\
67	{ "failover",		LAGG_PROTO_FAILOVER },			\
68	{ "fec",		LAGG_PROTO_ETHERCHANNEL },		\
69	{ "lacp",		LAGG_PROTO_LACP },			\
70	{ "loadbalance",	LAGG_PROTO_LOADBALANCE },		\
71	{ "roundrobin",		LAGG_PROTO_ROUNDROBIN },		\
72	{ "none",		LAGG_PROTO_NONE },			\
73	{ "default",		LAGG_PROTO_DEFAULT }			\
74}
75
76/*
77 * lagg ioctls.
78 */
79
80/*
81 * LACP current operational parameters structure.
82 */
83struct lacp_opreq {
84	uint16_t		actor_prio;
85	uint8_t			actor_mac[ETHER_ADDR_LEN];
86	uint16_t		actor_key;
87	uint16_t		actor_portprio;
88	uint16_t		actor_portno;
89	uint8_t			actor_state;
90	uint16_t		partner_prio;
91	uint8_t			partner_mac[ETHER_ADDR_LEN];
92	uint16_t		partner_key;
93	uint16_t		partner_portprio;
94	uint16_t		partner_portno;
95	uint8_t			partner_state;
96};
97
98/* lagg port settings */
99struct lagg_reqport {
100	char			rp_ifname[IFNAMSIZ];	/* name of the lagg */
101	char			rp_portname[IFNAMSIZ];	/* name of the port */
102	u_int32_t		rp_prio;		/* port priority */
103	u_int32_t		rp_flags;		/* port flags */
104	union {
105		struct lacp_opreq rpsc_lacp;
106	} rp_psc;
107#define rp_lacpreq	rp_psc.rpsc_lacp
108};
109
110#define	SIOCGLAGGPORT		_IOWR('i', 140, struct lagg_reqport)
111#define	SIOCSLAGGPORT		 _IOW('i', 141, struct lagg_reqport)
112#define	SIOCSLAGGDELPORT	 _IOW('i', 142, struct lagg_reqport)
113
114/* lagg, ports and options */
115struct lagg_reqall {
116	char			ra_ifname[IFNAMSIZ];	/* name of the lagg */
117	u_int			ra_proto;		/* lagg protocol */
118
119	size_t			ra_size;		/* size of buffer */
120	struct lagg_reqport	*ra_port;		/* allocated buffer */
121	int			ra_ports;		/* total port count */
122	union {
123		struct lacp_opreq rpsc_lacp;
124	} ra_psc;
125#define ra_lacpreq	ra_psc.rpsc_lacp
126};
127
128#define	SIOCGLAGG		_IOWR('i', 143, struct lagg_reqall)
129#define	SIOCSLAGG		 _IOW('i', 144, struct lagg_reqall)
130
131struct lagg_reqflags {
132	char			rf_ifname[IFNAMSIZ];	/* name of the lagg */
133	uint32_t		rf_flags;		/* lagg protocol */
134};
135
136#define	SIOCGLAGGFLAGS		_IOWR('i', 145, struct lagg_reqflags)
137#define	SIOCSLAGGHASH		 _IOW('i', 146, struct lagg_reqflags)
138
139struct lagg_reqopts {
140	char			ro_ifname[IFNAMSIZ];	/* name of the lagg */
141
142	int			ro_opts;		/* Option bitmap */
143#define	LAGG_OPT_NONE			0x00
144#define	LAGG_OPT_USE_FLOWID		0x01		/* use M_FLOWID */
145/* Pseudo flags which are used in ro_opts but not stored into sc_opts. */
146#define	LAGG_OPT_FLOWIDSHIFT		0x02		/* Set flowid */
147#define	LAGG_OPT_FLOWIDSHIFT_MASK	0x1f		/* flowid is uint32_t */
148#define	LAGG_OPT_LACP_STRICT		0x10		/* LACP strict mode */
149#define	LAGG_OPT_LACP_TXTEST		0x20		/* LACP debug: txtest */
150#define	LAGG_OPT_LACP_RXTEST		0x40		/* LACP debug: rxtest */
151	u_int			ro_count;		/* number of ports */
152	u_int			ro_active;		/* active port count */
153	u_int			ro_flapping;		/* number of flapping */
154	int			ro_flowid_shift;	/* shift the flowid */
155};
156
157#define	SIOCGLAGGOPTS		_IOWR('i', 152, struct lagg_reqopts)
158#define	SIOCSLAGGOPTS		 _IOW('i', 153, struct lagg_reqopts)
159
160#define	LAGG_OPT_BITS		"\020\001USE_FLOWID\005LACP_STRICT" \
161				"\006LACP_TXTEST\007LACP_RXTEST"
162
163#ifdef _KERNEL
164
165#include <sys/counter.h>
166
167/*
168 * Internal kernel part
169 */
170
171#define	lp_ifname		lp_ifp->if_xname	/* interface name */
172#define	lp_link_state		lp_ifp->if_link_state	/* link state */
173
174#define	LAGG_PORTACTIVE(_tp)	(					\
175	((_tp)->lp_link_state == LINK_STATE_UP) &&			\
176	((_tp)->lp_ifp->if_flags & IFF_UP)				\
177)
178
179struct lagg_ifreq {
180	union {
181		struct ifreq ifreq;
182		struct {
183			char ifr_name[IFNAMSIZ];
184			struct sockaddr_storage ifr_ss;
185		} ifreq_storage;
186	} ifreq;
187};
188
189#define	sc_ifflags		sc_ifp->if_flags		/* flags */
190#define	sc_ifname		sc_ifp->if_xname		/* name */
191#define	sc_capabilities		sc_ifp->if_capabilities	/* capabilities */
192
193#define	IFCAP_LAGG_MASK		0xffff0000	/* private capabilities */
194#define	IFCAP_LAGG_FULLDUPLEX	0x00010000	/* full duplex with >1 ports */
195
196/* Private data used by the loadbalancing protocol */
197struct lagg_lb {
198	u_int32_t		lb_key;
199	struct lagg_port	*lb_ports[LAGG_MAX_PORTS];
200};
201
202struct lagg_mc {
203	struct sockaddr_dl	mc_addr;
204	struct ifmultiaddr      *mc_ifma;
205	SLIST_ENTRY(lagg_mc)	mc_entries;
206};
207
208/* List of interfaces to have the MAC address modified */
209struct lagg_llq {
210	struct ifnet		*llq_ifp;
211	uint8_t			llq_lladdr[ETHER_ADDR_LEN];
212	uint8_t			llq_primary;
213	SLIST_ENTRY(lagg_llq)	llq_entries;
214};
215
216struct lagg_softc {
217	struct ifnet			*sc_ifp;	/* virtual interface */
218	struct rmlock			sc_mtx;
219	struct mtx			sc_call_mtx;
220	int				sc_proto;	/* lagg protocol */
221	u_int				sc_count;	/* number of ports */
222	u_int				sc_active;	/* active port count */
223	u_int				sc_flapping;	/* number of flapping
224							 * events */
225	struct lagg_port		*sc_primary;	/* primary port */
226	struct ifmedia			sc_media;	/* media config */
227	caddr_t				sc_psc;		/* protocol data */
228	uint32_t			sc_seq;		/* sequence counter */
229	uint32_t			sc_flags;
230
231	counter_u64_t			sc_ipackets;
232	counter_u64_t			sc_opackets;
233	counter_u64_t			sc_ibytes;
234	counter_u64_t			sc_obytes;
235
236	SLIST_HEAD(__tplhd, lagg_port)	sc_ports;	/* list of interfaces */
237	SLIST_ENTRY(lagg_softc)	sc_entries;
238
239	struct task			sc_lladdr_task;
240	SLIST_HEAD(__llqhd, lagg_llq)	sc_llq_head;	/* interfaces to program
241							   the lladdr on */
242
243	/* lagg protocol callbacks */
244	int	(*sc_detach)(struct lagg_softc *);
245	int	(*sc_start)(struct lagg_softc *, struct mbuf *);
246	struct mbuf *(*sc_input)(struct lagg_softc *, struct lagg_port *,
247		    struct mbuf *);
248	int	(*sc_port_create)(struct lagg_port *);
249	void	(*sc_port_destroy)(struct lagg_port *);
250	void	(*sc_linkstate)(struct lagg_port *);
251	void	(*sc_init)(struct lagg_softc *);
252	void	(*sc_stop)(struct lagg_softc *);
253	void	(*sc_lladdr)(struct lagg_softc *);
254	void	(*sc_req)(struct lagg_softc *, caddr_t);
255	void	(*sc_portreq)(struct lagg_port *, caddr_t);
256	eventhandler_tag vlan_attach;
257	eventhandler_tag vlan_detach;
258	struct callout			sc_callout;
259	u_int				sc_opts;
260	int				flowid_shift;	/* set flowid shift*/
261};
262
263struct lagg_port {
264	struct ifnet			*lp_ifp;	/* physical interface */
265	struct lagg_softc		*lp_softc;	/* parent lagg */
266	uint8_t				lp_lladdr[ETHER_ADDR_LEN];
267
268	u_char				lp_iftype;	/* interface type */
269	uint32_t			lp_prio;	/* port priority */
270	uint32_t			lp_flags;	/* port flags */
271	int				lp_ifflags;	/* saved ifp flags */
272	void				*lh_cookie;	/* if state hook */
273	caddr_t				lp_psc;		/* protocol data */
274	int				lp_detaching;	/* ifnet is detaching */
275
276	SLIST_HEAD(__mclhd, lagg_mc)	lp_mc_head;	/* multicast addresses */
277
278	/* Redirected callbacks */
279	int	(*lp_ioctl)(struct ifnet *, u_long, caddr_t);
280	int	(*lp_output)(struct ifnet *, struct mbuf *,
281		     const struct sockaddr *, struct route *);
282
283	SLIST_ENTRY(lagg_port)		lp_entries;
284};
285
286#define	LAGG_LOCK_INIT(_sc)	rm_init(&(_sc)->sc_mtx, "if_lagg rmlock")
287#define	LAGG_LOCK_DESTROY(_sc)	rm_destroy(&(_sc)->sc_mtx)
288#define	LAGG_RLOCK(_sc, _p)	rm_rlock(&(_sc)->sc_mtx, (_p))
289#define	LAGG_WLOCK(_sc)		rm_wlock(&(_sc)->sc_mtx)
290#define	LAGG_RUNLOCK(_sc, _p)	rm_runlock(&(_sc)->sc_mtx, (_p))
291#define	LAGG_WUNLOCK(_sc)	rm_wunlock(&(_sc)->sc_mtx)
292#define	LAGG_RLOCK_ASSERT(_sc)	rm_assert(&(_sc)->sc_mtx, RA_RLOCKED)
293#define	LAGG_WLOCK_ASSERT(_sc)	rm_assert(&(_sc)->sc_mtx, RA_WLOCKED)
294
295#define	LAGG_CALLOUT_LOCK_INIT(_sc)					\
296	    mtx_init(&(_sc)->sc_call_mtx, "if_lagg callout mutex", NULL,\
297	    MTX_DEF)
298#define	LAGG_CALLOUT_LOCK_DESTROY(_sc)	mtx_destroy(&(_sc)->sc_call_mtx)
299
300extern struct mbuf *(*lagg_input_p)(struct ifnet *, struct mbuf *);
301extern void	(*lagg_linkstate_p)(struct ifnet *, int );
302
303int		lagg_enqueue(struct ifnet *, struct mbuf *);
304uint32_t	lagg_hashmbuf(struct lagg_softc *, struct mbuf *, uint32_t);
305
306SYSCTL_DECL(_net_link_lagg);
307
308#endif /* _KERNEL */
309
310#endif /* _NET_LAGG_H */
311