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  * $FreeBSD$
   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          "\2\01MASTER\02STACK\03ACTIVE\04COLLECTING" \
   47                                   "\05DISTRIBUTING\06DISABLED"
   48 
   49 /* Supported lagg PROTOs */
   50 typedef 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_BROADCAST,   /* broadcast */
   57         LAGG_PROTO_MAX,
   58 } lagg_proto;
   59 
   60 struct 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         { "lacp",               LAGG_PROTO_LACP },                      \
   69         { "loadbalance",        LAGG_PROTO_LOADBALANCE },               \
   70         { "roundrobin", LAGG_PROTO_ROUNDROBIN },                \
   71         { "broadcast",  LAGG_PROTO_BROADCAST },         \
   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  */
   83 struct 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 */
   99 struct 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 */
  115 struct 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 
  131 struct 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 
  139 struct 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            /* enable use of flowid */
  145 /* Pseudo flags which are used in ro_opts but not stored into sc_opts. */
  146 #define LAGG_OPT_FLOWIDSHIFT            0x02            /* set flowid shift */
  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 #define LAGG_OPT_LACP_FAST_TIMO         0x80            /* LACP fast timeout */
  152         u_int                   ro_count;               /* number of ports */
  153         u_int                   ro_active;              /* active port count */
  154         u_int                   ro_flapping;            /* number of flapping */
  155         int                     ro_flowid_shift;        /* shift the flowid */
  156         uint32_t                ro_bkt;                 /* packet bucket for roundrobin */
  157 };
  158 
  159 #define SIOCGLAGGOPTS           _IOWR('i', 152, struct lagg_reqopts)
  160 #define SIOCSLAGGOPTS            _IOW('i', 153, struct lagg_reqopts)
  161 
  162 #define LAGG_OPT_BITS           "\020\001USE_FLOWID\005LACP_STRICT" \
  163                                 "\006LACP_TXTEST\007LACP_RXTEST" \
  164                                 "\010LACP_FAST_TIMO"
  165 
  166 #ifdef _KERNEL
  167 
  168 /*
  169  * Internal kernel part
  170  */
  171 
  172 #define LAGG_PORTACTIVE(_tp)    (                                       \
  173         ((_tp)->lp_ifp->if_link_state == LINK_STATE_UP) &&              \
  174         ((_tp)->lp_ifp->if_flags & IFF_UP)                              \
  175 )
  176 
  177 struct lagg_ifreq {
  178         union {
  179                 struct ifreq ifreq;
  180                 struct {
  181                         char ifr_name[IFNAMSIZ];
  182                         struct sockaddr_storage ifr_ss;
  183                 } ifreq_storage;
  184         } ifreq;
  185 };
  186 
  187 #define sc_ifflags              sc_ifp->if_flags                /* flags */
  188 #define sc_ifname               sc_ifp->if_xname                /* name */
  189 
  190 /* Private data used by the loadbalancing protocol */
  191 struct lagg_lb {
  192         u_int32_t               lb_key;
  193         struct lagg_port        *lb_ports[LAGG_MAX_PORTS];
  194 };
  195 
  196 struct lagg_mc {
  197         struct sockaddr_dl      mc_addr;
  198         struct ifmultiaddr      *mc_ifma;
  199         SLIST_ENTRY(lagg_mc)    mc_entries;
  200 };
  201 
  202 struct lagg_counters {
  203         uint64_t        val[IFCOUNTERS];
  204 };
  205 
  206 struct lagg_softc {
  207         struct ifnet                    *sc_ifp;        /* virtual interface */
  208         struct rmlock                   sc_mtx;
  209         struct sx                       sc_sx;
  210         int                             sc_proto;       /* lagg protocol */
  211         u_int                           sc_count;       /* number of ports */
  212         u_int                           sc_active;      /* active port count */
  213         u_int                           sc_flapping;    /* number of flapping
  214                                                          * events */
  215         struct lagg_port                *sc_primary;    /* primary port */
  216         struct ifmedia                  sc_media;       /* media config */
  217         void                            *sc_psc;        /* protocol data */
  218         uint32_t                        sc_seq;         /* sequence counter */
  219         uint32_t                        sc_flags;
  220         int                             sc_destroying;  /* destroying lagg */
  221 
  222         SLIST_HEAD(__tplhd, lagg_port)  sc_ports;       /* list of interfaces */
  223         SLIST_ENTRY(lagg_softc) sc_entries;
  224 
  225         eventhandler_tag vlan_attach;
  226         eventhandler_tag vlan_detach;
  227         struct callout                  sc_callout;
  228         u_int                           sc_opts;
  229         int                             flowid_shift;   /* shift the flowid */
  230         uint32_t                        sc_bkt;         /* packates bucket for roundrobin */
  231         uint32_t                        sc_bkt_count;   /* packates bucket count for roundrobin */
  232         struct lagg_counters            detached_counters; /* detached ports sum */
  233 };
  234 
  235 struct lagg_port {
  236         struct ifnet                    *lp_ifp;        /* physical interface */
  237         struct lagg_softc               *lp_softc;      /* parent lagg */
  238         uint8_t                         lp_lladdr[ETHER_ADDR_LEN];
  239 
  240         u_char                          lp_iftype;      /* interface type */
  241         uint32_t                        lp_prio;        /* port priority */
  242         uint32_t                        lp_flags;       /* port flags */
  243         int                             lp_ifflags;     /* saved ifp flags */
  244         int                             lp_ifcapenable; /* saved ifp capenable */
  245         void                            *lh_cookie;     /* if state hook */
  246         void                            *lp_psc;        /* protocol data */
  247         int                             lp_detaching;   /* ifnet is detaching */
  248         SLIST_HEAD(__mclhd, lagg_mc)    lp_mc_head;     /* multicast addresses */
  249 
  250         /* Redirected callbacks */
  251         int     (*lp_ioctl)(struct ifnet *, u_long, caddr_t);
  252         int     (*lp_output)(struct ifnet *, struct mbuf *,
  253                      const struct sockaddr *, struct route *);
  254         struct lagg_counters            port_counters;  /* ifp counters copy */
  255 
  256         SLIST_ENTRY(lagg_port)          lp_entries;
  257 };
  258 
  259 #define LAGG_LOCK_INIT(_sc)     rm_init(&(_sc)->sc_mtx, "if_lagg rmlock")
  260 #define LAGG_LOCK_DESTROY(_sc)  rm_destroy(&(_sc)->sc_mtx)
  261 #define LAGG_RLOCK(_sc, _p)     rm_rlock(&(_sc)->sc_mtx, (_p))
  262 #define LAGG_WLOCK(_sc)         rm_wlock(&(_sc)->sc_mtx)
  263 #define LAGG_RUNLOCK(_sc, _p)   rm_runlock(&(_sc)->sc_mtx, (_p))
  264 #define LAGG_WUNLOCK(_sc)       rm_wunlock(&(_sc)->sc_mtx)
  265 #define LAGG_RLOCK_ASSERT(_sc)  rm_assert(&(_sc)->sc_mtx, RA_RLOCKED)
  266 #define LAGG_WLOCK_ASSERT(_sc)  rm_assert(&(_sc)->sc_mtx, RA_WLOCKED)
  267 #define LAGG_UNLOCK_ASSERT(_sc) rm_assert(&(_sc)->sc_mtx, RA_UNLOCKED)
  268 
  269 #define LAGG_SX_INIT(_sc)       sx_init(&(_sc)->sc_sx, "if_lagg sx")
  270 #define LAGG_SX_DESTROY(_sc)    sx_destroy(&(_sc)->sc_sx)
  271 #define LAGG_SLOCK(_sc)         sx_slock(&(_sc)->sc_sx)
  272 #define LAGG_XLOCK(_sc)         sx_xlock(&(_sc)->sc_sx)
  273 #define LAGG_SUNLOCK(_sc)       sx_sunlock(&(_sc)->sc_sx)
  274 #define LAGG_XUNLOCK(_sc)       sx_xunlock(&(_sc)->sc_sx)
  275 #define LAGG_SXLOCK_ASSERT(_sc) sx_assert(&(_sc)->sc_sx, SA_LOCKED)
  276 #define LAGG_SLOCK_ASSERT(_sc)  sx_assert(&(_sc)->sc_sx, SA_SLOCKED)
  277 #define LAGG_XLOCK_ASSERT(_sc)  sx_assert(&(_sc)->sc_sx, SA_XLOCKED)
  278 
  279 extern struct mbuf *(*lagg_input_p)(struct ifnet *, struct mbuf *);
  280 extern void     (*lagg_linkstate_p)(struct ifnet *, int );
  281 
  282 int             lagg_enqueue(struct ifnet *, struct mbuf *);
  283 
  284 SYSCTL_DECL(_net_link_lagg);
  285 
  286 #endif /* _KERNEL */
  287 
  288 #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
