The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/netgraph/ng_fec.c

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
SearchContext: -  none  -  3  -  10 

    1 /*
    2  * ng_fec.c
    3  *
    4  * Copyright (c) 2001 Berkeley Software Design, Inc.
    5  * Copyright (c) 2000, 2001
    6  *      Bill Paul <wpaul@osd.bsdi.com>.  All rights reserved.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  * 3. All advertising materials mentioning features or use of this software
   17  *    must display the following acknowledgement:
   18  *      This product includes software developed by Bill Paul.
   19  * 4. Neither the name of the author nor the names of any co-contributors
   20  *    may be used to endorse or promote products derived from this software
   21  *    without specific prior written permission.
   22  *
   23  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
   24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   26  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
   27  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   33  * THE POSSIBILITY OF SUCH DAMAGE.
   34  *
   35  * $FreeBSD: releng/5.0/sys/netgraph/ng_fec.c 108335 2002-12-27 20:16:59Z julian $
   36  */
   37 /*
   38  * Copyright (c) 1996-1999 Whistle Communications, Inc.
   39  * All rights reserved.
   40  * 
   41  * Subject to the following obligations and disclaimer of warranty, use and
   42  * redistribution of this software, in source or object code forms, with or
   43  * without modifications are expressly permitted by Whistle Communications;
   44  * provided, however, that:
   45  * 1. Any and all reproductions of the source or object code must include the
   46  *    copyright notice above and the following disclaimer of warranties; and
   47  * 2. No rights are granted, in any manner or form, to use Whistle
   48  *    Communications, Inc. trademarks, including the mark "WHISTLE
   49  *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
   50  *    such appears in the above copyright notice or in the software.
   51  * 
   52  * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
   53  * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
   54  * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
   55  * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
   56  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
   57  * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
   58  * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
   59  * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
   60  * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
   61  * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
   62  * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
   63  * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
   64  * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
   65  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   66  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   67  * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
   68  * OF SUCH DAMAGE.
   69  *
   70  * Author: Archie Cobbs <archie@freebsd.org>
   71  *
   72  * $Whistle: ng_fec.c,v 1.33 1999/11/01 09:24:51 julian Exp $
   73  */
   74 
   75 /*
   76  * This module implements ethernet channel bonding using the Cisco
   77  * Fast EtherChannel mechanism. Two or four ports may be combined
   78  * into a single aggregate interface.
   79  *
   80  * Interfaces are named fec0, fec1, etc.  New nodes take the
   81  * first available interface name.
   82  *
   83  * This node also includes Berkeley packet filter support.
   84  *
   85  * Note that this node doesn't need to connect to any other
   86  * netgraph nodes in order to do its work.
   87  */
   88 
   89 #include <sys/param.h>
   90 #include <sys/systm.h>
   91 #include <sys/errno.h>
   92 #include <sys/kernel.h>
   93 #include <sys/malloc.h>
   94 #include <sys/mbuf.h>
   95 #include <sys/errno.h>
   96 #include <sys/sockio.h>
   97 #include <sys/socket.h>
   98 #include <sys/syslog.h>
   99 #include <sys/libkern.h>
  100 #include <sys/queue.h>
  101 
  102 #include <net/if.h>
  103 #include <net/if_types.h>
  104 #include <net/if_arp.h>
  105 #include <net/if_dl.h>
  106 #include <net/if_media.h>
  107 #include <net/intrq.h>
  108 #include <net/bpf.h>
  109 #include <net/ethernet.h>
  110 
  111 #include "opt_inet.h"
  112 #include "opt_inet6.h"
  113 
  114 #include <netinet/in.h>
  115 #ifdef INET
  116 #include <netinet/in_systm.h>
  117 #include <netinet/ip.h>
  118 #endif
  119 
  120 #ifdef INET6
  121 #include <netinet/ip6.h>
  122 #endif
  123 
  124 #include <netgraph/ng_message.h>
  125 #include <netgraph/netgraph.h>
  126 #include <netgraph/ng_parse.h>
  127 #include <netgraph/ng_fec.h>
  128 
  129 #define IFP2NG(ifp)  ((struct ng_node *)((struct arpcom *)(ifp))->ac_netgraph)
  130 #define FEC_INC(x, y)   (x) = (x + 1) % y
  131 
  132 /*
  133  * Current fast etherchannel implementations use either 2 or 4
  134  * ports, so for now we limit the maximum bundle size to 4 interfaces.
  135  */
  136 #define FEC_BUNDLESIZ   4
  137 
  138 struct ng_fec_portlist {
  139         struct ifnet            *fec_if;
  140         int                     fec_idx;
  141         int                     fec_ifstat;
  142         struct ether_addr       fec_mac;
  143         TAILQ_ENTRY(ng_fec_portlist) fec_list;
  144 };
  145 
  146 struct ng_fec_bundle {
  147         TAILQ_HEAD(,ng_fec_portlist) ng_fec_ports;
  148         int                     fec_ifcnt;
  149         int                     fec_btype;
  150 };
  151 
  152 #define FEC_BTYPE_MAC           0x01
  153 #define FEC_BTYPE_INET          0x02
  154 #define FEC_BTYPE_INET6         0x03
  155 
  156 /* Node private data */
  157 struct ng_fec_private {
  158         struct arpcom arpcom;
  159         struct ifmedia ifmedia;
  160         int     if_flags;
  161         int     if_error;               /* XXX */
  162         int     unit;                   /* Interface unit number */
  163         node_p  node;                   /* Our netgraph node */
  164         struct ng_fec_bundle fec_bundle;/* Aggregate bundle */
  165         struct callout_handle fec_ch;   /* callout handle for ticker */
  166 };
  167 typedef struct ng_fec_private *priv_p;
  168 
  169 /* Interface methods */
  170 static void     ng_fec_input(struct ifnet *, struct mbuf **,
  171                         struct ether_header *);
  172 static void     ng_fec_start(struct ifnet *ifp);
  173 static int      ng_fec_choose_port(struct ng_fec_bundle *b,
  174                         struct mbuf *m, struct ifnet **ifp);
  175 static int      ng_fec_setport(struct ifnet *ifp, u_long cmd, caddr_t data);
  176 static void     ng_fec_init(void *arg);
  177 static void     ng_fec_stop(struct ifnet *ifp);
  178 static int      ng_fec_ifmedia_upd(struct ifnet *ifp);
  179 static void     ng_fec_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr);
  180 static int      ng_fec_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data);
  181 static int      ng_fec_output(struct ifnet *ifp, struct mbuf *m0,
  182                         struct sockaddr *dst, struct rtentry *rt0);
  183 static void     ng_fec_tick(void *arg);
  184 static int      ng_fec_addport(struct ng_fec_private *priv, char *iface);
  185 static int      ng_fec_delport(struct ng_fec_private *priv, char *iface);
  186 
  187 #ifdef DEBUG
  188 static void     ng_fec_print_ioctl(struct ifnet *ifp, int cmd, caddr_t data);
  189 #endif
  190 
  191 /* ng_ether_input_p - see sys/netgraph/ng_ether.c */
  192 extern void (*ng_ether_input_p)(struct ifnet *ifp, struct mbuf **mp,
  193                         struct ether_header *eh);
  194 
  195 /* Netgraph methods */
  196 static ng_constructor_t ng_fec_constructor;
  197 static ng_rcvmsg_t      ng_fec_rcvmsg;
  198 static ng_shutdown_t    ng_fec_shutdown;
  199 
  200 /* List of commands and how to convert arguments to/from ASCII */
  201 static const struct ng_cmdlist ng_fec_cmds[] = {
  202         {
  203           NGM_FEC_COOKIE,
  204           NGM_FEC_ADD_IFACE,
  205           "add_iface",
  206           &ng_parse_string_type,
  207           NULL,
  208         },
  209         {
  210           NGM_FEC_COOKIE,
  211           NGM_FEC_DEL_IFACE,
  212           "del_iface",
  213           &ng_parse_string_type,
  214           NULL,
  215         },
  216         {
  217           NGM_FEC_COOKIE,
  218           NGM_FEC_SET_MODE_MAC,
  219           "set_mode_mac",
  220           NULL,
  221           NULL,
  222         },
  223         {
  224           NGM_FEC_COOKIE,
  225           NGM_FEC_SET_MODE_INET,
  226           "set_mode_inet",
  227           NULL,
  228           NULL,
  229         },
  230         { 0 }
  231 };
  232 
  233 /* Node type descriptor */
  234 static struct ng_type typestruct = {
  235         NG_ABI_VERSION,
  236         NG_FEC_NODE_TYPE,
  237         NULL,
  238         ng_fec_constructor,
  239         ng_fec_rcvmsg,
  240         ng_fec_shutdown,
  241         NULL,
  242         NULL,
  243         NULL,
  244         NULL,
  245         NULL,
  246         ng_fec_cmds
  247 };
  248 NETGRAPH_INIT(fec, &typestruct);
  249 
  250 /* We keep a bitmap indicating which unit numbers are free.
  251    One means the unit number is free, zero means it's taken. */
  252 static int      *ng_fec_units = NULL;
  253 static int      ng_fec_units_len = 0;
  254 static int      ng_units_in_use = 0;
  255 
  256 #define UNITS_BITSPERWORD       (sizeof(*ng_fec_units) * NBBY)
  257 
  258 /*
  259  * Find the first free unit number for a new interface.
  260  * Increase the size of the unit bitmap as necessary.
  261  */
  262 static __inline__ int
  263 ng_fec_get_unit(int *unit)
  264 {
  265         int index, bit;
  266 
  267         for (index = 0; index < ng_fec_units_len
  268             && ng_fec_units[index] == 0; index++);
  269         if (index == ng_fec_units_len) {                /* extend array */
  270                 int i, *newarray, newlen;
  271 
  272                 newlen = (2 * ng_fec_units_len) + 4;
  273                 MALLOC(newarray, int *, newlen * sizeof(*ng_fec_units),
  274                     M_NETGRAPH, M_NOWAIT);
  275                 if (newarray == NULL)
  276                         return (ENOMEM);
  277                 bcopy(ng_fec_units, newarray,
  278                     ng_fec_units_len * sizeof(*ng_fec_units));
  279                 for (i = ng_fec_units_len; i < newlen; i++)
  280                         newarray[i] = ~0;
  281                 if (ng_fec_units != NULL)
  282                         FREE(ng_fec_units, M_NETGRAPH);
  283                 ng_fec_units = newarray;
  284                 ng_fec_units_len = newlen;
  285         }
  286         bit = ffs(ng_fec_units[index]) - 1;
  287         KASSERT(bit >= 0 && bit <= UNITS_BITSPERWORD - 1,
  288             ("%s: word=%d bit=%d", __FUNCTION__, ng_fec_units[index], bit));
  289         ng_fec_units[index] &= ~(1 << bit);
  290         *unit = (index * UNITS_BITSPERWORD) + bit;
  291         ng_units_in_use++;
  292         return (0);
  293 }
  294 
  295 /*
  296  * Free a no longer needed unit number.
  297  */
  298 static __inline__ void
  299 ng_fec_free_unit(int unit)
  300 {
  301         int index, bit;
  302 
  303         index = unit / UNITS_BITSPERWORD;
  304         bit = unit % UNITS_BITSPERWORD;
  305         KASSERT(index < ng_fec_units_len,
  306             ("%s: unit=%d len=%d", __FUNCTION__, unit, ng_fec_units_len));
  307         KASSERT((ng_fec_units[index] & (1 << bit)) == 0,
  308             ("%s: unit=%d is free", __FUNCTION__, unit));
  309         ng_fec_units[index] |= (1 << bit);
  310         /*
  311          * XXX We could think about reducing the size of ng_fec_units[]
  312          * XXX here if the last portion is all ones
  313          * XXX At least free it if no more units
  314          * Needed if we are to eventually be able to unload.
  315          */
  316         ng_units_in_use--;
  317         if (ng_units_in_use == 0) { /* XXX make SMP safe */
  318                 FREE(ng_fec_units, M_NETGRAPH);
  319                 ng_fec_units_len = 0;
  320                 ng_fec_units = NULL;
  321         }
  322 }
  323 
  324 /************************************************************************
  325                         INTERFACE STUFF
  326  ************************************************************************/
  327 
  328 static int
  329 ng_fec_addport(struct ng_fec_private *priv, char *iface)
  330 {
  331         struct ng_fec_bundle    *b;
  332         struct ifnet            *ifp, *bifp;
  333         struct arpcom           *ac;
  334         struct ifaddr           *ifa;
  335         struct sockaddr_dl      *sdl;
  336         struct ng_fec_portlist  *p, *new;
  337 
  338         if (priv == NULL || iface == NULL)
  339                 return(EINVAL);
  340 
  341         b = &priv->fec_bundle;
  342         ifp = &priv->arpcom.ac_if;
  343 
  344         /* Find the interface */
  345         bifp = ifunit(iface);
  346         if (bifp == NULL) {
  347                 printf("fec%d: tried to add iface %s, which "
  348                     "doesn't seem to exist\n", priv->unit, iface);
  349                 return(ENOENT);
  350         }
  351 
  352         /* See if we have room in the bundle */
  353         if (b->fec_ifcnt == FEC_BUNDLESIZ) {
  354                 printf("fec%d: can't add new iface; bundle is full\n",
  355                     priv->unit);
  356                 return(ENOSPC);
  357         }
  358 
  359         /* See if the interface is already in the bundle */
  360         TAILQ_FOREACH(p, &b->ng_fec_ports, fec_list) {
  361                 if (p->fec_if == bifp) {
  362                         printf("fec%d: iface %s is already in this "
  363                             "bundle\n", priv->unit, iface);
  364                         return(EINVAL);
  365                 }
  366         }
  367 
  368         /* Allocate new list entry. */
  369         MALLOC(new, struct ng_fec_portlist *,
  370             sizeof(struct ng_fec_portlist), M_NETGRAPH, M_NOWAIT);
  371         if (new == NULL)
  372                 return(ENOMEM);
  373 
  374         ac = (struct arpcom *)bifp;
  375         ac->ac_netgraph = priv->node;
  376 
  377         /*
  378          * If this is the first interface added to the bundle,
  379          * use its MAC address for the virtual interface (and,
  380          * by extension, all the other ports in the bundle).
  381          */
  382         if (b->fec_ifcnt == 0) {
  383                 ifa = TAILQ_FIRST(&ifp->if_addrhead);
  384                 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
  385                 bcopy((char *)ac->ac_enaddr,
  386                     priv->arpcom.ac_enaddr, ETHER_ADDR_LEN);
  387                 bcopy((char *)ac->ac_enaddr,
  388                     LLADDR(sdl), ETHER_ADDR_LEN);
  389         }
  390 
  391         b->fec_btype = FEC_BTYPE_MAC;
  392         new->fec_idx = b->fec_ifcnt;
  393         b->fec_ifcnt++;
  394 
  395         /* Save the real MAC address. */
  396         bcopy((char *)ac->ac_enaddr,
  397             (char *)&new->fec_mac, ETHER_ADDR_LEN);
  398 
  399         /* Set up phony MAC address. */
  400         ifa = TAILQ_FIRST(&bifp->if_addrhead);
  401         sdl = (struct sockaddr_dl *)ifa->ifa_addr;
  402         bcopy(priv->arpcom.ac_enaddr, ac->ac_enaddr, ETHER_ADDR_LEN);
  403         bcopy(priv->arpcom.ac_enaddr, LLADDR(sdl), ETHER_ADDR_LEN);
  404 
  405         /* Add to the queue */
  406         new->fec_if = bifp;
  407         TAILQ_INSERT_TAIL(&b->ng_fec_ports, new, fec_list);
  408 
  409         return(0);
  410 }
  411 
  412 static int
  413 ng_fec_delport(struct ng_fec_private *priv, char *iface)
  414 {
  415         struct ng_fec_bundle    *b;
  416         struct ifnet            *ifp, *bifp;
  417         struct arpcom           *ac;
  418         struct ifaddr           *ifa;
  419         struct sockaddr_dl      *sdl;
  420         struct ng_fec_portlist  *p;
  421 
  422         if (priv == NULL || iface == NULL)
  423                 return(EINVAL);
  424 
  425         b = &priv->fec_bundle;
  426         ifp = &priv->arpcom.ac_if;
  427 
  428         /* Find the interface */
  429         bifp = ifunit(iface);
  430         if (bifp == NULL) {
  431                 printf("fec%d: tried to remove iface %s, which "
  432                     "doesn't seem to exist\n", priv->unit, iface);
  433                 return(ENOENT);
  434         }
  435 
  436         TAILQ_FOREACH(p, &b->ng_fec_ports, fec_list) {
  437                 if (p->fec_if == bifp)
  438                         break;
  439         }
  440 
  441         if (p == NULL) {
  442                 printf("fec%d: tried to remove iface %s which "
  443                     "is not in our bundle\n", priv->unit, iface);
  444                 return(EINVAL);
  445         }
  446 
  447         /* Stop interface */
  448         bifp->if_flags &= ~IFF_UP;
  449         (*bifp->if_ioctl)(bifp, SIOCSIFFLAGS, NULL);
  450 
  451         /* Restore MAC address. */
  452         ac = (struct arpcom *)bifp;
  453         ifa = TAILQ_FIRST(&bifp->if_addrhead);
  454         sdl = (struct sockaddr_dl *)ifa->ifa_addr;
  455         bcopy((char *)&p->fec_mac, ac->ac_enaddr, ETHER_ADDR_LEN);
  456         bcopy((char *)&p->fec_mac, LLADDR(sdl), ETHER_ADDR_LEN);
  457 
  458         /* Delete port */
  459         TAILQ_REMOVE(&b->ng_fec_ports, p, fec_list);
  460         FREE(p, M_NETGRAPH);
  461         b->fec_ifcnt--;
  462 
  463         return(0);
  464 }
  465 
  466 /*
  467  * Pass an ioctl command down to all the underyling interfaces in a
  468  * bundle. Used for setting multicast filters and flags.
  469  */
  470 
  471 static int 
  472 ng_fec_setport(struct ifnet *ifp, u_long command, caddr_t data)
  473 {
  474         struct ng_fec_private   *priv;
  475         struct ng_fec_bundle    *b;
  476         struct ifnet            *oifp;
  477         struct ng_fec_portlist  *p;
  478 
  479         priv = ifp->if_softc;
  480         b = &priv->fec_bundle;
  481 
  482         TAILQ_FOREACH(p, &b->ng_fec_ports, fec_list) {
  483                 oifp = p->fec_if;
  484                 if (oifp != NULL)
  485                         (*oifp->if_ioctl)(oifp, command, data);
  486         }
  487 
  488         return(0);
  489 }
  490 
  491 static void
  492 ng_fec_init(void *arg)
  493 {
  494         struct ng_fec_private   *priv;
  495         struct ng_fec_bundle    *b;
  496         struct ifnet            *ifp, *bifp;
  497         struct ng_fec_portlist  *p;
  498 
  499         ifp = arg;
  500         priv = ifp->if_softc;
  501         b = &priv->fec_bundle;
  502 
  503         if (b->fec_ifcnt == 1 || b->fec_ifcnt == 3) {
  504                 printf("fec%d: invalid bundle "
  505                     "size: %d\n", priv->unit,
  506                     b->fec_ifcnt);
  507                 return;
  508         }
  509 
  510         ng_fec_stop(ifp);
  511 
  512         TAILQ_FOREACH(p, &b->ng_fec_ports, fec_list) {
  513                 bifp = p->fec_if;
  514                 bifp->if_flags |= IFF_UP;
  515                 (*bifp->if_ioctl)(bifp, SIOCSIFFLAGS, NULL);
  516                 /* mark iface as up and let the monitor check it */
  517                 p->fec_ifstat = -1;
  518         }
  519 
  520         priv->fec_ch = timeout(ng_fec_tick, priv, hz);
  521 
  522         return;
  523 }
  524 
  525 static void
  526 ng_fec_stop(struct ifnet *ifp)
  527 {
  528         struct ng_fec_private   *priv;
  529         struct ng_fec_bundle    *b;
  530         struct ifnet            *bifp;
  531         struct ng_fec_portlist  *p;
  532 
  533         priv = ifp->if_softc;
  534         b = &priv->fec_bundle;
  535 
  536         TAILQ_FOREACH(p, &b->ng_fec_ports, fec_list) {
  537                 bifp = p->fec_if;
  538                 bifp->if_flags &= ~IFF_UP;
  539                 (*bifp->if_ioctl)(bifp, SIOCSIFFLAGS, NULL);
  540         }
  541 
  542         untimeout(ng_fec_tick, priv, priv->fec_ch);
  543 
  544         return;
  545 }
  546 
  547 static void
  548 ng_fec_tick(void *arg)
  549 {
  550         struct ng_fec_private   *priv;
  551         struct ng_fec_bundle    *b;
  552         struct ifmediareq       ifmr;
  553         struct ifnet            *ifp;
  554         struct ng_fec_portlist  *p;
  555         int                     error = 0;
  556 
  557         priv = arg;
  558         b = &priv->fec_bundle;
  559 
  560         TAILQ_FOREACH(p, &b->ng_fec_ports, fec_list) {
  561                 bzero((char *)&ifmr, sizeof(ifmr));
  562                 ifp = p->fec_if;
  563                 error = (*ifp->if_ioctl)(ifp, SIOCGIFMEDIA, (caddr_t)&ifmr);
  564                 if (error) {
  565                         printf("fec%d: failed to check status "
  566                             "of link %s%d\n", priv->unit, ifp->if_name,
  567                             ifp->if_unit);
  568                         continue;
  569                 }
  570 
  571                 if (ifmr.ifm_status & IFM_AVALID &&
  572                     IFM_TYPE(ifmr.ifm_active) == IFM_ETHER) {
  573                         if (ifmr.ifm_status & IFM_ACTIVE) {
  574                                 if (p->fec_ifstat == -1 ||
  575                                     p->fec_ifstat == 0) {
  576                                         p->fec_ifstat = 1;
  577                                         printf("fec%d: port %s%d in bundle "
  578                                             "is up\n", priv->unit,
  579                                             ifp->if_name, ifp->if_unit);
  580                                 }
  581                         } else {
  582                                 if (p->fec_ifstat == -1 ||
  583                                     p->fec_ifstat == 1) {
  584                                         p->fec_ifstat = 0;
  585                                         printf("fec%d: port %s%d in bundle "
  586                                             "is down\n", priv->unit,
  587                                             ifp->if_name, ifp->if_unit);
  588                                 }
  589                         }
  590                 }
  591         }
  592 
  593         ifp = &priv->arpcom.ac_if;
  594         if (ifp->if_flags & IFF_RUNNING)
  595                 priv->fec_ch = timeout(ng_fec_tick, priv, hz);
  596 
  597         return;
  598 }
  599 
  600 static int
  601 ng_fec_ifmedia_upd(struct ifnet *ifp)
  602 {
  603         return(0);
  604 }
  605 
  606 static void ng_fec_ifmedia_sts(struct ifnet *ifp,
  607         struct ifmediareq *ifmr)
  608 {
  609         struct ng_fec_private   *priv;
  610         struct ng_fec_bundle    *b;
  611         struct ng_fec_portlist  *p;
  612 
  613         priv = ifp->if_softc;
  614         b = &priv->fec_bundle;
  615 
  616         ifmr->ifm_status = IFM_AVALID;
  617         TAILQ_FOREACH(p, &b->ng_fec_ports, fec_list) {
  618                 if (p->fec_ifstat) {
  619                         ifmr->ifm_status |= IFM_ACTIVE;
  620                         break;
  621                 }
  622         }
  623 
  624         return;
  625 }
  626 
  627 /*
  628  * Process an ioctl for the virtual interface
  629  */
  630 static int
  631 ng_fec_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
  632 {
  633         struct ifreq *const ifr = (struct ifreq *) data;
  634         int s, error = 0;
  635         struct ng_fec_private   *priv;
  636         struct ng_fec_bundle    *b;
  637 
  638         priv = ifp->if_softc;
  639         b = &priv->fec_bundle;
  640 
  641 #ifdef DEBUG
  642         ng_fec_print_ioctl(ifp, command, data);
  643 #endif
  644         s = splimp();
  645         switch (command) {
  646 
  647         /* These two are mostly handled at a higher layer */
  648         case SIOCSIFADDR:
  649         case SIOCGIFADDR:
  650         case SIOCSIFMTU:
  651                 error = ether_ioctl(ifp, command, data);
  652                 break;
  653 
  654         /* Set flags */
  655         case SIOCSIFFLAGS:
  656                 /*
  657                  * If the interface is marked up and stopped, then start it.
  658                  * If it is marked down and running, then stop it.
  659                  */
  660                 if (ifr->ifr_flags & IFF_UP) {
  661                         if (!(ifp->if_flags & IFF_RUNNING)) {
  662                                 /* Sanity. */
  663                                 if (b->fec_ifcnt == 1 || b->fec_ifcnt == 3) {
  664                                         printf("fec%d: invalid bundle "
  665                                             "size: %d\n", priv->unit,
  666                                             b->fec_ifcnt);
  667                                         error = EINVAL;
  668                                         break;
  669                                 }
  670                                 ifp->if_flags &= ~(IFF_OACTIVE);
  671                                 ifp->if_flags |= IFF_RUNNING;
  672                                 ng_fec_init(ifp);
  673                         }
  674                         /*
  675                          * Bubble down changes in promisc mode to
  676                          * underlying interfaces.
  677                          */
  678                         if ((ifp->if_flags & IFF_PROMISC) !=
  679                             (priv->if_flags & IFF_PROMISC)) {
  680                                 ng_fec_setport(ifp, command, data);
  681                                 priv->if_flags = ifp->if_flags;
  682                         }
  683                 } else {
  684                         if (ifp->if_flags & IFF_RUNNING)
  685                                 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
  686                         ng_fec_stop(ifp);
  687                 }
  688                 break;
  689 
  690         case SIOCADDMULTI:
  691         case SIOCDELMULTI:
  692                 ng_fec_setport(ifp, command, data);
  693                 error = 0;
  694                 break;
  695         case SIOCGIFMEDIA:
  696         case SIOCSIFMEDIA:
  697                 error = ifmedia_ioctl(ifp, ifr, &priv->ifmedia, command);
  698                 break;
  699         /* Stuff that's not supported */
  700         case SIOCSIFPHYS:
  701                 error = EOPNOTSUPP;
  702                 break;
  703 
  704         default:
  705                 error = EINVAL;
  706                 break;
  707         }
  708         (void) splx(s);
  709         return (error);
  710 }
  711 
  712 /*
  713  * This routine spies on mbufs passing through ether_input(). If
  714  * they come from one of the interfaces that are aggregated into
  715  * our bundle, we fix up the ifnet pointer and increment our
  716  * packet counters so that it looks like the frames are actually
  717  * coming from us.
  718  */
  719 static void 
  720 ng_fec_input(struct ifnet *ifp, struct mbuf **m0,
  721                 struct ether_header *eh)
  722 {
  723         struct ng_node          *node;
  724         struct ng_fec_private   *priv;
  725         struct ng_fec_bundle    *b;
  726         struct mbuf             *m;
  727         struct ifnet            *bifp;
  728         struct ng_fec_portlist  *p;
  729 
  730         /* Sanity check */
  731         if (ifp == NULL || m0 == NULL || eh == NULL)
  732                 return;
  733 
  734         node = IFP2NG(ifp);
  735 
  736         /* Sanity check part II */
  737         if (node == NULL)
  738                 return;
  739 
  740         priv = NG_NODE_PRIVATE(node);
  741         b = &priv->fec_bundle;
  742         bifp = &priv->arpcom.ac_if;
  743 
  744         m = *m0;
  745         TAILQ_FOREACH(p, &b->ng_fec_ports, fec_list) {
  746                 if (p->fec_if == m->m_pkthdr.rcvif)
  747                         break;
  748         }
  749 
  750         /* Wasn't meant for us; leave this frame alone. */
  751         if (p == NULL)
  752                 return;
  753 
  754         /* Pretend this is our frame. */
  755         m->m_pkthdr.rcvif = bifp;
  756         bifp->if_ipackets++;
  757         bifp->if_ibytes += m->m_pkthdr.len + sizeof(struct ether_header);
  758 
  759         /* Check for a BPF tap */
  760         if (bifp->if_bpf != NULL) {
  761                 struct m_hdr mh;
  762 
  763                 /* This kludge is OK; BPF treats the "mbuf" as read-only */
  764                 mh.mh_next = m;
  765                 mh.mh_data = (char *)eh;
  766                 mh.mh_len = ETHER_HDR_LEN;
  767                 BPF_MTAP(bifp, (struct mbuf *)&mh);
  768         }
  769 
  770         return;
  771 }
  772 
  773 /*
  774  * Take a quick peek at the packet and see if it's ok for us to use
  775  * the inet or inet6 hash methods on it, if they're enabled. We do
  776  * this by setting flags in the mbuf header. Once we've made up our
  777  * mind what to do, we pass the frame to ether_output() for further
  778  * processing.
  779  */
  780 
  781 static int
  782 ng_fec_output(struct ifnet *ifp, struct mbuf *m,
  783                 struct sockaddr *dst, struct rtentry *rt0)
  784 {
  785         const priv_p priv = (priv_p) ifp->if_softc;
  786         struct ng_fec_bundle *b;
  787         int error;
  788 
  789         /* Check interface flags */
  790         if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) {
  791                 m_freem(m);
  792                 return (ENETDOWN);
  793         }
  794 
  795         b = &priv->fec_bundle;
  796 
  797         switch (b->fec_btype) {
  798         case FEC_BTYPE_MAC:
  799                 m->m_flags |= M_FEC_MAC;
  800                 break;
  801 #ifdef INET
  802         case FEC_BTYPE_INET:
  803                 /*
  804                  * We can't use the INET address port selection
  805                  * scheme if this isn't an INET packet.
  806                  */
  807                 if (dst->sa_family == AF_INET)
  808                         m->m_flags |= M_FEC_INET;
  809 #ifdef INET6
  810                 else if (dst->sa_family == AF_INET6)
  811                         m->m_flags |= M_FEC_INET6;
  812 #endif
  813                 else {
  814 #ifdef DEBUG
  815                         printf("fec%d: can't do inet aggregation of non "
  816                             "inet packet\n", ifp->if_unit);
  817 #endif
  818                         m->m_flags |= M_FEC_MAC;
  819                 }
  820                 break;
  821 #endif
  822         default:
  823                 printf("fec%d: bogus hash type: %d\n", ifp->if_unit,
  824                     b->fec_btype);
  825                 m_freem(m);
  826                 return(EINVAL);
  827                 break;
  828         }
  829 
  830         /*
  831          * Pass the frame to ether_output() for all the protocol
  832          * handling. This will put the ethernet header on the packet
  833          * for us.
  834          */
  835         priv->if_error = 0;
  836         error = ether_output(ifp, m, dst, rt0);
  837         if (priv->if_error && !error)
  838                 error = priv->if_error;
  839 
  840         return(error);
  841 }
  842 
  843 /*
  844  * Apply a hash to the source and destination addresses in the packet
  845  * in order to select an interface. Also check link status and handle
  846  * dead links accordingly.
  847  */
  848 
  849 static int
  850 ng_fec_choose_port(struct ng_fec_bundle *b,
  851         struct mbuf *m, struct ifnet **ifp)
  852 {
  853         struct ether_header     *eh;
  854         struct mbuf             *m0;
  855 #ifdef INET
  856         struct ip               *ip;
  857 #ifdef INET6
  858         struct ip6_hdr          *ip6;
  859 #endif
  860 #endif
  861 
  862         struct ng_fec_portlist  *p;
  863         int                     port = 0, mask;
  864 
  865         /*
  866          * If there are only two ports, mask off all but the
  867          * last bit for XORing. If there are 4, mask off all
  868          * but the last 2 bits.
  869          */
  870         mask = b->fec_ifcnt == 2 ? 0x1 : 0x3;
  871         eh = mtod(m, struct ether_header *);
  872 #ifdef INET
  873         ip = (struct ip *)(mtod(m, char *) +
  874             sizeof(struct ether_header));
  875 #ifdef INET6
  876         ip6 = (struct ip6_hdr *)(mtod(m, char *) +
  877             sizeof(struct ether_header));
  878 #endif
  879 #endif
  880 
  881         /*
  882          * The fg_fec_output() routine is supposed to leave a
  883          * flag for us in the mbuf that tells us what hash to
  884          * use, but sometimes a new mbuf is prepended to the
  885          * chain, so we have to search every mbuf in the chain
  886          * to find the flags.
  887          */
  888         m0 = m;
  889         while (m0) {
  890                 if (m0->m_flags & (M_FEC_MAC|M_FEC_INET|M_FEC_INET6))
  891                         break;
  892                 m0 = m0->m_next;
  893         }
  894         if (m0 == NULL)
  895                 return(EINVAL);
  896 
  897         switch (m0->m_flags & (M_FEC_MAC|M_FEC_INET|M_FEC_INET6)) {
  898         case M_FEC_MAC:
  899                 port = (eh->ether_dhost[5] ^
  900                     eh->ether_shost[5]) & mask;
  901                 break;
  902 #ifdef INET
  903         case M_FEC_INET:
  904                 port = (ntohl(ip->ip_dst.s_addr) ^
  905                     ntohl(ip->ip_src.s_addr)) & mask;
  906                 break;
  907 #ifdef INET6
  908         case M_FEC_INET6:
  909                 port = (ip6->ip6_dst.s6_addr[15] ^
  910                     ip6->ip6_dst.s6_addr[15]) & mask;
  911                 break;
  912 #endif
  913 #endif
  914         default:
  915                 return(EINVAL);
  916                         break;
  917         }
  918 
  919         TAILQ_FOREACH(p, &b->ng_fec_ports, fec_list) {
  920                 if (port == p->fec_idx)
  921                         break;
  922         }
  923 
  924         /*
  925          * Now that we've chosen a port, make sure it's
  926          * alive. If it's not alive, cycle through the bundle
  927          * looking for a port that is alive. If we don't find
  928          * any, return an error.
  929          */
  930         if (p->fec_ifstat != 1) {
  931                 struct ng_fec_portlist  *n = NULL;
  932 
  933                 n = TAILQ_NEXT(p, fec_list);
  934                 if (n == NULL)
  935                         n = TAILQ_FIRST(&b->ng_fec_ports);
  936                 while (n != p) {
  937                         if (n->fec_ifstat == 1)
  938                                 break;
  939                         n = TAILQ_NEXT(n, fec_list);
  940                         if (n == NULL)
  941                                 n = TAILQ_FIRST(&b->ng_fec_ports);
  942                 }
  943                 if (n == p)
  944                         return(EAGAIN);
  945                 p = n;
  946         }
  947 
  948         *ifp = p->fec_if;
  949 
  950         return(0);
  951 }
  952 
  953 /*
  954  * Now that the packet has been run through ether_output(), yank it
  955  * off our own send queue and stick it on the queue for the appropriate
  956  * underlying physical interface. Note that if the interface's send
  957  * queue is full, we save an error status in our private netgraph
  958  * space which will eventually be handed up to ng_fec_output(), which
  959  * will return it to the rest of the IP stack. We need to do this
  960  * in order to duplicate the effect of ether_output() returning ENOBUFS
  961  * when it detects that an interface's send queue is full. There's no
  962  * other way to signal the error status from here since the if_start()
  963  * routine is spec'ed to return void.
  964  *
  965  * Once the frame is queued, we call ether_output_frame() to initiate
  966  * transmission.
  967  */
  968 static void
  969 ng_fec_start(struct ifnet *ifp)
  970 {
  971         struct ng_fec_private   *priv;
  972         struct ng_fec_bundle    *b;
  973         struct ifnet            *oifp = NULL;
  974         struct mbuf             *m0;
  975         int                     error;
  976 
  977         priv = ifp->if_softc;
  978         b = &priv->fec_bundle;
  979 
  980         IF_DEQUEUE(&ifp->if_snd, m0);
  981         if (m0 == NULL)
  982                 return;
  983 
  984         BPF_MTAP(ifp, m0);
  985 
  986         /* Queue up packet on the proper port. */
  987         error = ng_fec_choose_port(b, m0, &oifp);
  988         if (error) {
  989                 ifp->if_ierrors++;
  990                 m_freem(m0);
  991                 priv->if_error = ENOBUFS;
  992                 return;
  993         }
  994         ifp->if_opackets++;
  995 
  996         priv->if_error = ether_output_frame(oifp, m0);
  997         return;
  998 }
  999 
 1000 #ifdef DEBUG
 1001 /*
 1002  * Display an ioctl to the virtual interface
 1003  */
 1004 
 1005 static void
 1006 ng_fec_print_ioctl(struct ifnet *ifp, int command, caddr_t data)
 1007 {
 1008         char   *str;
 1009 
 1010         switch (command & IOC_DIRMASK) {
 1011         case IOC_VOID:
 1012                 str = "IO";
 1013                 break;
 1014         case IOC_OUT:
 1015                 str = "IOR";
 1016                 break;
 1017         case IOC_IN:
 1018                 str = "IOW";
 1019                 break;
 1020         case IOC_INOUT:
 1021                 str = "IORW";
 1022                 break;
 1023         default:
 1024                 str = "IO??";
 1025         }
 1026         log(LOG_DEBUG, "%s%d: %s('%c', %d, char[%d])\n",
 1027                ifp->if_name, ifp->if_unit,
 1028                str,
 1029                IOCGROUP(command),
 1030                command & 0xff,
 1031                IOCPARM_LEN(command));
 1032 }
 1033 #endif /* DEBUG */
 1034 
 1035 /************************************************************************
 1036                         NETGRAPH NODE STUFF
 1037  ************************************************************************/
 1038 
 1039 /*
 1040  * Constructor for a node
 1041  */
 1042 static int
 1043 ng_fec_constructor(node_p node)
 1044 {
 1045         char ifname[NG_FEC_FEC_NAME_MAX + 1];
 1046         struct ifnet *ifp;
 1047         priv_p priv;
 1048         struct ng_fec_bundle *b;
 1049         int error = 0;
 1050 
 1051         /* Allocate node and interface private structures */
 1052         MALLOC(priv, priv_p, sizeof(*priv), M_NETGRAPH, M_NOWAIT);
 1053         if (priv == NULL)
 1054                 return (ENOMEM);
 1055         bzero(priv, sizeof(*priv));
 1056 
 1057         ifp = &priv->arpcom.ac_if;
 1058         b = &priv->fec_bundle;
 1059 
 1060         /* Link them together */
 1061         ifp->if_softc = priv;
 1062 
 1063         /* Get an interface unit number */
 1064         if ((error = ng_fec_get_unit(&priv->unit)) != 0) {
 1065                 FREE(ifp, M_NETGRAPH);
 1066                 FREE(priv, M_NETGRAPH);
 1067                 return (error);
 1068         }
 1069 
 1070         /* Link together node and private info */
 1071         NG_NODE_SET_PRIVATE(node, priv);
 1072         priv->node = node;
 1073         priv->arpcom.ac_netgraph = node;
 1074 
 1075         /* Initialize interface structure */
 1076         ifp->if_name = NG_FEC_FEC_NAME;
 1077         ifp->if_unit = priv->unit;
 1078         ifp->if_output = ng_fec_output;
 1079         ifp->if_start = ng_fec_start;
 1080         ifp->if_ioctl = ng_fec_ioctl;
 1081         ifp->if_init = ng_fec_init;
 1082         ifp->if_watchdog = NULL;
 1083         ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
 1084         ifp->if_mtu = NG_FEC_MTU_DEFAULT;
 1085         ifp->if_flags = (IFF_SIMPLEX|IFF_BROADCAST|IFF_MULTICAST);
 1086         ifp->if_type = IFT_PROPVIRTUAL;         /* XXX */
 1087         ifp->if_addrlen = 0;                    /* XXX */
 1088         ifp->if_hdrlen = 0;                     /* XXX */
 1089         ifp->if_baudrate = 100000000;           /* XXX */
 1090         TAILQ_INIT(&ifp->if_addrhead);
 1091 
 1092         /* Give this node the same name as the interface (if possible) */
 1093         bzero(ifname, sizeof(ifname));
 1094         snprintf(ifname, sizeof(ifname), "%s%d", ifp->if_name, ifp->if_unit);
 1095         if (ng_name_node(node, ifname) != 0)
 1096                 log(LOG_WARNING, "%s: can't acquire netgraph name\n", ifname);
 1097 
 1098         /* Grab hold of the ether_input pipe. */
 1099         if (ng_ether_input_p == NULL)
 1100                 ng_ether_input_p = ng_fec_input;
 1101 
 1102         /* Attach the interface */
 1103         ether_ifattach(ifp, priv->arpcom.ac_enaddr);
 1104         callout_handle_init(&priv->fec_ch);
 1105 
 1106         TAILQ_INIT(&b->ng_fec_ports);
 1107         b->fec_ifcnt = 0;
 1108 
 1109         ifmedia_init(&priv->ifmedia, 0,
 1110             ng_fec_ifmedia_upd, ng_fec_ifmedia_sts);
 1111         ifmedia_add(&priv->ifmedia, IFM_ETHER|IFM_NONE, 0, NULL);
 1112         ifmedia_set(&priv->ifmedia, IFM_ETHER|IFM_NONE);
 1113 
 1114         /* Done */
 1115         return (0);
 1116 }
 1117 
 1118 /*
 1119  * Receive a control message
 1120  */
 1121 static int
 1122 ng_fec_rcvmsg(node_p node, item_p item, hook_p lasthook)
 1123 {
 1124         const priv_p priv = NG_NODE_PRIVATE(node);
 1125         struct ng_fec_bundle    *b;
 1126         struct ng_mesg *resp = NULL;
 1127         struct ng_mesg *msg;
 1128         char *ifname;
 1129         int error = 0;
 1130 
 1131         NGI_GET_MSG(item, msg);
 1132         b = &priv->fec_bundle;
 1133 
 1134         switch (msg->header.typecookie) {
 1135         case NGM_FEC_COOKIE:
 1136                 switch (msg->header.cmd) {
 1137                 case NGM_FEC_ADD_IFACE:
 1138                         ifname = msg->data;
 1139                         error = ng_fec_addport(priv, ifname);
 1140                         break;
 1141                 case NGM_FEC_DEL_IFACE:
 1142                         ifname = msg->data;
 1143                         error = ng_fec_delport(priv, ifname);
 1144                         break;
 1145                 case NGM_FEC_SET_MODE_MAC:
 1146                         b->fec_btype = FEC_BTYPE_MAC;
 1147                         break;
 1148 #ifdef INET
 1149                 case NGM_FEC_SET_MODE_INET:
 1150                         b->fec_btype = FEC_BTYPE_INET;
 1151                         break;
 1152 #ifdef INET6
 1153                 case NGM_FEC_SET_MODE_INET6:
 1154                         b->fec_btype = FEC_BTYPE_INET6;
 1155                         break;
 1156 #endif
 1157 #endif
 1158                 default:
 1159                         error = EINVAL;
 1160                         break;
 1161                 }
 1162                 break;
 1163         default:
 1164                 error = EINVAL;
 1165                 break;
 1166         }
 1167         NG_RESPOND_MSG(error, node, item, resp);
 1168         NG_FREE_MSG(msg);
 1169         return (error);
 1170 }
 1171 
 1172 /*
 1173  * Shutdown and remove the node and its associated interface.
 1174  */
 1175 static int
 1176 ng_fec_shutdown(node_p node)
 1177 {
 1178         const priv_p priv = NG_NODE_PRIVATE(node);
 1179         struct ng_fec_bundle *b;
 1180         struct ng_fec_portlist  *p;
 1181         char ifname[IFNAMSIZ];
 1182 
 1183         b = &priv->fec_bundle;
 1184         ng_fec_stop(&priv->arpcom.ac_if);
 1185 
 1186         while (!TAILQ_EMPTY(&b->ng_fec_ports)) {
 1187                 p = TAILQ_FIRST(&b->ng_fec_ports);
 1188                 sprintf(ifname, "%s%d",
 1189                     p->fec_if->if_name,
 1190                     p->fec_if->if_unit);
 1191                 ng_fec_delport(priv, ifname);
 1192         }
 1193 
 1194         if (ng_ether_input_p != NULL)
 1195                 ng_ether_input_p = NULL;
 1196         ether_ifdetach(&priv->arpcom.ac_if);
 1197         ifmedia_removeall(&priv->ifmedia);
 1198         ng_fec_free_unit(priv->unit);
 1199         FREE(priv, M_NETGRAPH);
 1200         NG_NODE_SET_PRIVATE(node, NULL);
 1201         NG_NODE_UNREF(node);
 1202         return (0);
 1203 }

Cache object: f87d0af5347415777697ea0014fb059f


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.