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freebsd-skq/sys/net/if_lagg.h
Hans Petter Selasky c25290420e Start process of removing the use of the deprecated "M_FLOWID" flag 
from the FreeBSD network code. The flag is still kept around in the
"sys/mbuf.h" header file, but does no longer have any users. Instead
the "m_pkthdr.rsstype" field in the mbuf structure is now used to
decide the meaning of the "m_pkthdr.flowid" field. To modify the
"m_pkthdr.rsstype" field please use the existing "M_HASHTYPE_XXX"
macros as defined in the "sys/mbuf.h" header file.

This patch introduces new behaviour in the transmit direction.
Previously network drivers checked if "M_FLOWID" was set in "m_flags"
before using the "m_pkthdr.flowid" field. This check has now now been
replaced by checking if "M_HASHTYPE_GET(m)" is different from
"M_HASHTYPE_NONE". In the future more hashtypes will be added, for
example hashtypes for hardware dedicated flows.

"M_HASHTYPE_OPAQUE" indicates that the "m_pkthdr.flowid" value is
valid and has no particular type. This change removes the need for an
"if" statement in TCP transmit code checking for the presence of a
valid flowid value. The "if" statement mentioned above is now a direct
variable assignment which is then later checked by the respective
network drivers like before.

Additional notes:
- The SCTP code changes will be committed as a separate patch.
- Removal of the "M_FLOWID" flag will also be done separately.
- The FreeBSD version has been bumped.

MFC after:	1 month
Sponsored by:	Mellanox Technologies
2014-12-01 11:45:24 +00:00

289 lines
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/* $OpenBSD: if_trunk.h,v 1.11 2007/01/31 06:20:19 reyk Exp $ */
/*
* Copyright (c) 2005, 2006 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.
*
* $FreeBSD$
*/
#ifndef _NET_LAGG_H
#define _NET_LAGG_H
/*
* Global definitions
*/
#define LAGG_MAX_PORTS 32 /* logically */
#define LAGG_MAX_NAMESIZE 32 /* name of a protocol */
#define LAGG_MAX_STACKING 4 /* maximum number of stacked laggs */
/* Lagg flags */
#define LAGG_F_HASHL2 0x00000001 /* hash layer 2 */
#define LAGG_F_HASHL3 0x00000002 /* hash layer 3 */
#define LAGG_F_HASHL4 0x00000004 /* hash layer 4 */
#define LAGG_F_HASHMASK 0x00000007
/* Port flags */
#define LAGG_PORT_SLAVE 0x00000000 /* normal enslaved port */
#define LAGG_PORT_MASTER 0x00000001 /* primary port */
#define LAGG_PORT_STACK 0x00000002 /* stacked lagg port */
#define LAGG_PORT_ACTIVE 0x00000004 /* port is active */
#define LAGG_PORT_COLLECTING 0x00000008 /* port is receiving frames */
#define LAGG_PORT_DISTRIBUTING 0x00000010 /* port is sending frames */
#define LAGG_PORT_DISABLED 0x00000020 /* port is disabled */
#define LAGG_PORT_BITS "\20\01MASTER\02STACK\03ACTIVE\04COLLECTING" \
"\05DISTRIBUTING\06DISABLED"
/* Supported lagg PROTOs */
typedef enum {
LAGG_PROTO_NONE = 0, /* no lagg protocol defined */
LAGG_PROTO_ROUNDROBIN, /* simple round robin */
LAGG_PROTO_FAILOVER, /* active failover */
LAGG_PROTO_LOADBALANCE, /* loadbalance */
LAGG_PROTO_LACP, /* 802.3ad lacp */
LAGG_PROTO_ETHERCHANNEL,/* Cisco FEC */
LAGG_PROTO_BROADCAST, /* broadcast */
LAGG_PROTO_MAX,
} lagg_proto;
struct lagg_protos {
const char *lpr_name;
lagg_proto lpr_proto;
};
#define LAGG_PROTO_DEFAULT LAGG_PROTO_FAILOVER
#define LAGG_PROTOS { \
{ "failover", LAGG_PROTO_FAILOVER }, \
{ "fec", LAGG_PROTO_ETHERCHANNEL }, \
{ "lacp", LAGG_PROTO_LACP }, \
{ "loadbalance", LAGG_PROTO_LOADBALANCE }, \
{ "roundrobin", LAGG_PROTO_ROUNDROBIN }, \
{ "broadcast", LAGG_PROTO_BROADCAST }, \
{ "none", LAGG_PROTO_NONE }, \
{ "default", LAGG_PROTO_DEFAULT } \
}
/*
* lagg ioctls.
*/
/*
* LACP current operational parameters structure.
*/
struct lacp_opreq {
uint16_t actor_prio;
uint8_t actor_mac[ETHER_ADDR_LEN];
uint16_t actor_key;
uint16_t actor_portprio;
uint16_t actor_portno;
uint8_t actor_state;
uint16_t partner_prio;
uint8_t partner_mac[ETHER_ADDR_LEN];
uint16_t partner_key;
uint16_t partner_portprio;
uint16_t partner_portno;
uint8_t partner_state;
};
/* lagg port settings */
struct lagg_reqport {
char rp_ifname[IFNAMSIZ]; /* name of the lagg */
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 SIOCGLAGGPORT _IOWR('i', 140, struct lagg_reqport)
#define SIOCSLAGGPORT _IOW('i', 141, struct lagg_reqport)
#define SIOCSLAGGDELPORT _IOW('i', 142, struct lagg_reqport)
/* lagg, ports and options */
struct lagg_reqall {
char ra_ifname[IFNAMSIZ]; /* name of the lagg */
u_int ra_proto; /* lagg protocol */
size_t ra_size; /* size of buffer */
struct lagg_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 SIOCGLAGG _IOWR('i', 143, struct lagg_reqall)
#define SIOCSLAGG _IOW('i', 144, struct lagg_reqall)
struct lagg_reqflags {
char rf_ifname[IFNAMSIZ]; /* name of the lagg */
uint32_t rf_flags; /* lagg protocol */
};
#define SIOCGLAGGFLAGS _IOWR('i', 145, struct lagg_reqflags)
#define SIOCSLAGGHASH _IOW('i', 146, struct lagg_reqflags)
struct lagg_reqopts {
char ro_ifname[IFNAMSIZ]; /* name of the lagg */
int ro_opts; /* Option bitmap */
#define LAGG_OPT_NONE 0x00
#define LAGG_OPT_USE_FLOWID 0x01 /* enable use of flowid */
/* Pseudo flags which are used in ro_opts but not stored into sc_opts. */
#define LAGG_OPT_FLOWIDSHIFT 0x02 /* set flowid shift */
#define LAGG_OPT_FLOWIDSHIFT_MASK 0x1f /* flowid is uint32_t */
#define LAGG_OPT_LACP_STRICT 0x10 /* LACP strict mode */
#define LAGG_OPT_LACP_TXTEST 0x20 /* LACP debug: txtest */
#define LAGG_OPT_LACP_RXTEST 0x40 /* LACP debug: rxtest */
u_int ro_count; /* number of ports */
u_int ro_active; /* active port count */
u_int ro_flapping; /* number of flapping */
int ro_flowid_shift; /* shift the flowid */
};
#define SIOCGLAGGOPTS _IOWR('i', 152, struct lagg_reqopts)
#define SIOCSLAGGOPTS _IOW('i', 153, struct lagg_reqopts)
#define LAGG_OPT_BITS "\020\001USE_FLOWID\005LACP_STRICT" \
"\006LACP_TXTEST\007LACP_RXTEST"
#ifdef _KERNEL
/*
* Internal kernel part
*/
#define LAGG_PORTACTIVE(_tp) ( \
((_tp)->lp_ifp->if_link_state == LINK_STATE_UP) && \
((_tp)->lp_ifp->if_flags & IFF_UP) \
)
struct lagg_ifreq {
union {
struct ifreq ifreq;
struct {
char ifr_name[IFNAMSIZ];
struct sockaddr_storage ifr_ss;
} ifreq_storage;
} ifreq;
};
#define sc_ifflags sc_ifp->if_flags /* flags */
#define sc_ifname sc_ifp->if_xname /* name */
#define sc_capabilities sc_ifp->if_capabilities /* capabilities */
#define IFCAP_LAGG_MASK 0xffff0000 /* private capabilities */
#define IFCAP_LAGG_FULLDUPLEX 0x00010000 /* full duplex with >1 ports */
/* Private data used by the loadbalancing protocol */
struct lagg_lb {
u_int32_t lb_key;
struct lagg_port *lb_ports[LAGG_MAX_PORTS];
};
struct lagg_mc {
struct sockaddr_dl mc_addr;
struct ifmultiaddr *mc_ifma;
SLIST_ENTRY(lagg_mc) mc_entries;
};
/* List of interfaces to have the MAC address modified */
struct lagg_llq {
struct ifnet *llq_ifp;
uint8_t llq_lladdr[ETHER_ADDR_LEN];
uint8_t llq_primary;
SLIST_ENTRY(lagg_llq) llq_entries;
};
struct lagg_counters {
uint64_t val[IFCOUNTERS];
};
struct lagg_softc {
struct ifnet *sc_ifp; /* virtual interface */
struct rmlock sc_mtx;
int sc_proto; /* lagg protocol */
u_int sc_count; /* number of ports */
u_int sc_active; /* active port count */
u_int sc_flapping; /* number of flapping
* events */
struct lagg_port *sc_primary; /* primary port */
struct ifmedia sc_media; /* media config */
void *sc_psc; /* protocol data */
uint32_t sc_seq; /* sequence counter */
uint32_t sc_flags;
SLIST_HEAD(__tplhd, lagg_port) sc_ports; /* list of interfaces */
SLIST_ENTRY(lagg_softc) sc_entries;
struct task sc_lladdr_task;
SLIST_HEAD(__llqhd, lagg_llq) sc_llq_head; /* interfaces to program
the lladdr on */
eventhandler_tag vlan_attach;
eventhandler_tag vlan_detach;
struct callout sc_callout;
u_int sc_opts;
int flowid_shift; /* shift the flowid */
struct lagg_counters detached_counters; /* detached ports sum */
};
struct lagg_port {
struct ifnet *lp_ifp; /* physical interface */
struct lagg_softc *lp_softc; /* parent lagg */
uint8_t lp_lladdr[ETHER_ADDR_LEN];
u_char lp_iftype; /* interface type */
uint32_t lp_prio; /* port priority */
uint32_t lp_flags; /* port flags */
int lp_ifflags; /* saved ifp flags */
void *lh_cookie; /* if state hook */
void *lp_psc; /* protocol data */
int lp_detaching; /* ifnet is detaching */
SLIST_HEAD(__mclhd, lagg_mc) lp_mc_head; /* multicast addresses */
/* Redirected callbacks */
int (*lp_ioctl)(struct ifnet *, u_long, caddr_t);
int (*lp_output)(struct ifnet *, struct mbuf *,
const struct sockaddr *, struct route *);
struct lagg_counters port_counters; /* ifp counters copy */
SLIST_ENTRY(lagg_port) lp_entries;
};
#define LAGG_LOCK_INIT(_sc) rm_init(&(_sc)->sc_mtx, "if_lagg rmlock")
#define LAGG_LOCK_DESTROY(_sc) rm_destroy(&(_sc)->sc_mtx)
#define LAGG_RLOCK(_sc, _p) rm_rlock(&(_sc)->sc_mtx, (_p))
#define LAGG_WLOCK(_sc) rm_wlock(&(_sc)->sc_mtx)
#define LAGG_RUNLOCK(_sc, _p) rm_runlock(&(_sc)->sc_mtx, (_p))
#define LAGG_WUNLOCK(_sc) rm_wunlock(&(_sc)->sc_mtx)
#define LAGG_RLOCK_ASSERT(_sc) rm_assert(&(_sc)->sc_mtx, RA_RLOCKED)
#define LAGG_WLOCK_ASSERT(_sc) rm_assert(&(_sc)->sc_mtx, RA_WLOCKED)
extern struct mbuf *(*lagg_input_p)(struct ifnet *, struct mbuf *);
extern void (*lagg_linkstate_p)(struct ifnet *, int );
int lagg_enqueue(struct ifnet *, struct mbuf *);
uint32_t lagg_hashmbuf(struct lagg_softc *, struct mbuf *, uint32_t);
SYSCTL_DECL(_net_link_lagg);
#endif /* _KERNEL */
#endif /* _NET_LAGG_H */
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