if_lagg.h

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    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: releng/8.3/sys/net/if_lagg.h 232314 2012-02-29 20:22:45Z thompsa $
   19  */
   20 
   21 #ifndef _NET_LAGG_H
   22 #define _NET_LAGG_H
   23 
   24 #include <sys/sysctl.h>
   25 
   26 /*
   27  * Global definitions
   28  */
   29 
   30 #define LAGG_MAX_PORTS          32      /* logically */
   31 #define LAGG_MAX_NAMESIZE       32      /* name of a protocol */
   32 #define LAGG_MAX_STACKING       4       /* maximum number of stacked laggs */
   33 
   34 /* Port flags */
   35 #define LAGG_PORT_SLAVE         0x00000000      /* normal enslaved port */
   36 #define LAGG_PORT_MASTER        0x00000001      /* primary port */
   37 #define LAGG_PORT_STACK         0x00000002      /* stacked lagg port */
   38 #define LAGG_PORT_ACTIVE        0x00000004      /* port is active */
   39 #define LAGG_PORT_COLLECTING    0x00000008      /* port is receiving frames */
   40 #define LAGG_PORT_DISTRIBUTING  0x00000010      /* port is sending frames */
   41 #define LAGG_PORT_DISABLED      0x00000020      /* port is disabled */
   42 #define LAGG_PORT_BITS          "\2\01MASTER\02STACK\03ACTIVE\04COLLECTING" \
   43                                   "\05DISTRIBUTING\06DISABLED"
   44 
   45 /* Supported lagg PROTOs */
   46 #define LAGG_PROTO_NONE         0       /* no lagg protocol defined */
   47 #define LAGG_PROTO_ROUNDROBIN   1       /* simple round robin */
   48 #define LAGG_PROTO_FAILOVER     2       /* active failover */
   49 #define LAGG_PROTO_LOADBALANCE  3       /* loadbalance */
   50 #define LAGG_PROTO_LACP         4       /* 802.3ad lacp */
   51 #define LAGG_PROTO_ETHERCHANNEL 5       /* Cisco FEC */
   52 #define LAGG_PROTO_MAX          6
   53 
   54 struct lagg_protos {
   55         const char              *lpr_name;
   56         int                     lpr_proto;
   57 };
   58 
   59 #define LAGG_PROTO_DEFAULT      LAGG_PROTO_FAILOVER
   60 #define LAGG_PROTOS     {                                               \
   61         { "failover",           LAGG_PROTO_FAILOVER },                  \
   62         { "fec",                LAGG_PROTO_ETHERCHANNEL },              \
   63         { "lacp",               LAGG_PROTO_LACP },                      \
   64         { "loadbalance",        LAGG_PROTO_LOADBALANCE },               \
   65         { "roundrobin",         LAGG_PROTO_ROUNDROBIN },                \
   66         { "none",               LAGG_PROTO_NONE },                      \
   67         { "default",            LAGG_PROTO_DEFAULT }                    \
   68 }
   69 
   70 /*
   71  * lagg ioctls.
   72  */
   73 
   74 /*
   75  * LACP current operational parameters structure.
   76  */
   77 struct lacp_opreq {
   78         uint16_t                actor_prio;
   79         uint8_t                 actor_mac[ETHER_ADDR_LEN];
   80         uint16_t                actor_key;
   81         uint16_t                actor_portprio;
   82         uint16_t                actor_portno;
   83         uint8_t                 actor_state;
   84         uint16_t                partner_prio;
   85         uint8_t                 partner_mac[ETHER_ADDR_LEN];
   86         uint16_t                partner_key;
   87         uint16_t                partner_portprio;
   88         uint16_t                partner_portno;
   89         uint8_t                 partner_state;
   90 };
   91 
   92 /* lagg port settings */
   93 struct lagg_reqport {
   94         char                    rp_ifname[IFNAMSIZ];    /* name of the lagg */
   95         char                    rp_portname[IFNAMSIZ];  /* name of the port */
   96         u_int32_t               rp_prio;                /* port priority */
   97         u_int32_t               rp_flags;               /* port flags */
   98         union {
   99                 struct lacp_opreq rpsc_lacp;
  100         } rp_psc;
  101 #define rp_lacpreq      rp_psc.rpsc_lacp
  102 };
  103 
  104 #define SIOCGLAGGPORT           _IOWR('i', 140, struct lagg_reqport)
  105 #define SIOCSLAGGPORT            _IOW('i', 141, struct lagg_reqport)
  106 #define SIOCSLAGGDELPORT         _IOW('i', 142, struct lagg_reqport)
  107 
  108 /* lagg, ports and options */
  109 struct lagg_reqall {
  110         char                    ra_ifname[IFNAMSIZ];    /* name of the lagg */
  111         u_int                   ra_proto;               /* lagg protocol */
  112 
  113         size_t                  ra_size;                /* size of buffer */
  114         struct lagg_reqport     *ra_port;               /* allocated buffer */
  115         int                     ra_ports;               /* total port count */
  116         union {
  117                 struct lacp_opreq rpsc_lacp;
  118         } ra_psc;
  119 #define ra_lacpreq      ra_psc.rpsc_lacp
  120 };
  121 
  122 #define SIOCGLAGG               _IOWR('i', 143, struct lagg_reqall)
  123 #define SIOCSLAGG                _IOW('i', 144, struct lagg_reqall)
  124 
  125 #ifdef _KERNEL
  126 /*
  127  * Internal kernel part
  128  */
  129 
  130 #define lp_ifname               lp_ifp->if_xname        /* interface name */
  131 #define lp_link_state           lp_ifp->if_link_state   /* link state */
  132 
  133 #define LAGG_PORTACTIVE(_tp)    (                                       \
  134         ((_tp)->lp_link_state == LINK_STATE_UP) &&                      \
  135         ((_tp)->lp_ifp->if_flags & IFF_UP)                              \
  136 )
  137 
  138 struct lagg_ifreq {
  139         union {
  140                 struct ifreq ifreq;
  141                 struct {
  142                         char ifr_name[IFNAMSIZ];
  143                         struct sockaddr_storage ifr_ss;
  144                 } ifreq_storage;
  145         } ifreq;
  146 };
  147 
  148 #define sc_ifflags              sc_ifp->if_flags                /* flags */
  149 #define sc_ifname               sc_ifp->if_xname                /* name */
  150 #define sc_capabilities         sc_ifp->if_capabilities /* capabilities */
  151 
  152 #define IFCAP_LAGG_MASK         0xffff0000      /* private capabilities */
  153 #define IFCAP_LAGG_FULLDUPLEX   0x00010000      /* full duplex with >1 ports */
  154 
  155 /* Private data used by the loadbalancing protocol */
  156 struct lagg_lb {
  157         u_int32_t               lb_key;
  158         struct lagg_port        *lb_ports[LAGG_MAX_PORTS];
  159 };
  160 
  161 struct lagg_mc {
  162         struct ifmultiaddr      *mc_ifma;
  163         SLIST_ENTRY(lagg_mc)    mc_entries;
  164 };
  165 
  166 /* List of interfaces to have the MAC address modified */
  167 struct lagg_llq {
  168         struct ifnet            *llq_ifp;
  169         uint8_t                 llq_lladdr[ETHER_ADDR_LEN];
  170         SLIST_ENTRY(lagg_llq)   llq_entries;
  171 };
  172 
  173 struct lagg_softc {
  174         struct ifnet                    *sc_ifp;        /* virtual interface */
  175         struct rwlock                   sc_mtx;
  176         int                             sc_proto;       /* lagg protocol */
  177         u_int                           sc_count;       /* number of ports */
  178         struct lagg_port                *sc_primary;    /* primary port */
  179         struct ifmedia                  sc_media;       /* media config */
  180         caddr_t                         sc_psc;         /* protocol data */
  181         uint32_t                        sc_seq;         /* sequence counter */
  182 
  183         SLIST_HEAD(__tplhd, lagg_port)  sc_ports;       /* list of interfaces */
  184         SLIST_ENTRY(lagg_softc) sc_entries;
  185 
  186         struct task                     sc_lladdr_task;
  187         SLIST_HEAD(__llqhd, lagg_llq)   sc_llq_head;    /* interfaces to program
  188                                                            the lladdr on */
  189 
  190         /* lagg protocol callbacks */
  191         int     (*sc_detach)(struct lagg_softc *);
  192         int     (*sc_start)(struct lagg_softc *, struct mbuf *);
  193         struct mbuf *(*sc_input)(struct lagg_softc *, struct lagg_port *,
  194                     struct mbuf *);
  195         int     (*sc_port_create)(struct lagg_port *);
  196         void    (*sc_port_destroy)(struct lagg_port *);
  197         void    (*sc_linkstate)(struct lagg_port *);
  198         void    (*sc_init)(struct lagg_softc *);
  199         void    (*sc_stop)(struct lagg_softc *);
  200         void    (*sc_lladdr)(struct lagg_softc *);
  201         void    (*sc_req)(struct lagg_softc *, caddr_t);
  202         void    (*sc_portreq)(struct lagg_port *, caddr_t);
  203 #if __FreeBSD_version >= 800000
  204         eventhandler_tag vlan_attach;
  205         eventhandler_tag vlan_detach;
  206 #endif
  207         struct sysctl_ctx_list          ctx;            /* sysctl variables */
  208         int                             use_flowid;     /* use M_FLOWID */
  209 };
  210 
  211 struct lagg_port {
  212         struct ifnet                    *lp_ifp;        /* physical interface */
  213         struct lagg_softc               *lp_softc;      /* parent lagg */
  214         uint8_t                         lp_lladdr[ETHER_ADDR_LEN];
  215 
  216         u_char                          lp_iftype;      /* interface type */
  217         uint32_t                        lp_prio;        /* port priority */
  218         uint32_t                        lp_flags;       /* port flags */
  219         int                             lp_ifflags;     /* saved ifp flags */
  220         void                            *lh_cookie;     /* if state hook */
  221         caddr_t                         lp_psc;         /* protocol data */
  222         int                             lp_detaching;   /* ifnet is detaching */
  223 
  224         SLIST_HEAD(__mclhd, lagg_mc)    lp_mc_head;     /* multicast addresses */
  225 
  226         /* Redirected callbacks */
  227         int     (*lp_ioctl)(struct ifnet *, u_long, caddr_t);
  228         int     (*lp_output)(struct ifnet *, struct mbuf *, struct sockaddr *,
  229                      struct route *);
  230 
  231         SLIST_ENTRY(lagg_port)          lp_entries;
  232 };
  233 
  234 #define LAGG_LOCK_INIT(_sc)     rw_init(&(_sc)->sc_mtx, "if_lagg rwlock")
  235 #define LAGG_LOCK_DESTROY(_sc)  rw_destroy(&(_sc)->sc_mtx)
  236 #define LAGG_RLOCK(_sc)         rw_rlock(&(_sc)->sc_mtx)
  237 #define LAGG_WLOCK(_sc)         rw_wlock(&(_sc)->sc_mtx)
  238 #define LAGG_RUNLOCK(_sc)       rw_runlock(&(_sc)->sc_mtx)
  239 #define LAGG_WUNLOCK(_sc)       rw_wunlock(&(_sc)->sc_mtx)
  240 #define LAGG_RLOCK_ASSERT(_sc)  rw_assert(&(_sc)->sc_mtx, RA_RLOCKED)
  241 #define LAGG_WLOCK_ASSERT(_sc)  rw_assert(&(_sc)->sc_mtx, RA_WLOCKED)
  242 
  243 extern struct mbuf *(*lagg_input_p)(struct ifnet *, struct mbuf *);
  244 extern void     (*lagg_linkstate_p)(struct ifnet *, int );
  245 
  246 int             lagg_enqueue(struct ifnet *, struct mbuf *);
  247 uint32_t        lagg_hashmbuf(struct mbuf *, uint32_t);
  248 
  249 #endif /* _KERNEL */
  250 
  251 #endif /* _NET_LAGG_H */
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FreeBSD/Linux Kernel Cross Reference sys/net/if_lagg.h

FreeBSD/Linux Kernel Cross Reference
sys/net/if_lagg.h
