The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/netgraph/ng_cisco.c

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    1 
    2 /*
    3  * ng_cisco.c
    4  *
    5  * Copyright (c) 1996-1999 Whistle Communications, Inc.
    6  * All rights reserved.
    7  * 
    8  * Subject to the following obligations and disclaimer of warranty, use and
    9  * redistribution of this software, in source or object code forms, with or
   10  * without modifications are expressly permitted by Whistle Communications;
   11  * provided, however, that:
   12  * 1. Any and all reproductions of the source or object code must include the
   13  *    copyright notice above and the following disclaimer of warranties; and
   14  * 2. No rights are granted, in any manner or form, to use Whistle
   15  *    Communications, Inc. trademarks, including the mark "WHISTLE
   16  *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
   17  *    such appears in the above copyright notice or in the software.
   18  * 
   19  * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
   20  * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
   21  * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
   22  * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
   23  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
   24  * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
   25  * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
   26  * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
   27  * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
   28  * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
   29  * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
   30  * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
   31  * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
   32  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   33  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   34  * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
   35  * OF SUCH DAMAGE.
   36  *
   37  * Author: Julian Elischer <julian@freebsd.org>
   38  *
   39  * $FreeBSD: releng/5.0/sys/netgraph/ng_cisco.c 102244 2002-08-22 00:30:03Z archie $
   40  * $Whistle: ng_cisco.c,v 1.25 1999/11/01 09:24:51 julian Exp $
   41  */
   42 
   43 #include <sys/param.h>
   44 #include <sys/systm.h>
   45 #include <sys/errno.h>
   46 #include <sys/kernel.h>
   47 #include <sys/socket.h>
   48 #include <sys/malloc.h>
   49 #include <sys/mbuf.h>
   50 #include <sys/syslog.h>
   51 
   52 #include <net/if.h>
   53 
   54 #include <netinet/in.h>
   55 #include <netinet/if_ether.h>
   56 
   57 #include <netatalk/at.h>
   58 
   59 #include <netipx/ipx.h>
   60 #include <netipx/ipx_if.h>
   61 
   62 #include <netgraph/ng_message.h>
   63 #include <netgraph/netgraph.h>
   64 #include <netgraph/ng_parse.h>
   65 #include <netgraph/ng_cisco.h>
   66 
   67 #define CISCO_MULTICAST         0x8f    /* Cisco multicast address */
   68 #define CISCO_UNICAST           0x0f    /* Cisco unicast address */
   69 #define CISCO_KEEPALIVE         0x8035  /* Cisco keepalive protocol */
   70 #define CISCO_ADDR_REQ          0       /* Cisco address request */
   71 #define CISCO_ADDR_REPLY        1       /* Cisco address reply */
   72 #define CISCO_KEEPALIVE_REQ     2       /* Cisco keepalive request */
   73 
   74 #define KEEPALIVE_SECS          10
   75 
   76 struct cisco_header {
   77         u_char  address;
   78         u_char  control;
   79         u_short protocol;
   80 };
   81 
   82 #define CISCO_HEADER_LEN          sizeof (struct cisco_header)
   83 
   84 struct cisco_packet {
   85         u_long  type;
   86         u_long  par1;
   87         u_long  par2;
   88         u_short rel;
   89         u_short time0;
   90         u_short time1;
   91 };
   92 
   93 #define CISCO_PACKET_LEN (sizeof(struct cisco_packet))
   94 
   95 struct protoent {
   96         hook_p  hook;           /* the hook for this proto */
   97         u_short af;             /* address family, -1 = downstream */
   98 };
   99 
  100 struct cisco_priv {
  101         u_long  local_seq;
  102         u_long  remote_seq;
  103         u_long  seqRetries;     /* how many times we've been here throwing out
  104                                  * the same sequence number without ack */
  105         node_p  node;
  106         struct callout_handle handle;
  107         struct protoent downstream;
  108         struct protoent inet;           /* IP information */
  109         struct in_addr localip;
  110         struct in_addr localmask;
  111         struct protoent inet6;          /* IPv6 information */
  112         struct protoent atalk;          /* AppleTalk information */
  113         struct protoent ipx;            /* IPX information */
  114 };
  115 typedef struct cisco_priv *sc_p;
  116 
  117 /* Netgraph methods */
  118 static ng_constructor_t         cisco_constructor;
  119 static ng_rcvmsg_t              cisco_rcvmsg;
  120 static ng_shutdown_t            cisco_shutdown;
  121 static ng_newhook_t             cisco_newhook;
  122 static ng_rcvdata_t             cisco_rcvdata;
  123 static ng_disconnect_t          cisco_disconnect;
  124 
  125 /* Other functions */
  126 static int      cisco_input(sc_p sc, item_p item);
  127 static void     cisco_keepalive(void *arg);
  128 static int      cisco_send(sc_p sc, int type, long par1, long par2);
  129 
  130 /* Parse type for struct ng_cisco_ipaddr */
  131 static const struct ng_parse_struct_field ng_cisco_ipaddr_type_fields[]
  132         = NG_CISCO_IPADDR_TYPE_INFO;
  133 static const struct ng_parse_type ng_cisco_ipaddr_type = {
  134         &ng_parse_struct_type,
  135         &ng_cisco_ipaddr_type_fields
  136 };
  137 
  138 /* Parse type for struct ng_async_stat */
  139 static const struct ng_parse_struct_field ng_cisco_stats_type_fields[]
  140         = NG_CISCO_STATS_TYPE_INFO;
  141 static const struct ng_parse_type ng_cisco_stats_type = {
  142         &ng_parse_struct_type,
  143         &ng_cisco_stats_type_fields
  144 };
  145 
  146 /* List of commands and how to convert arguments to/from ASCII */
  147 static const struct ng_cmdlist ng_cisco_cmdlist[] = {
  148         {
  149           NGM_CISCO_COOKIE,
  150           NGM_CISCO_SET_IPADDR,
  151           "setipaddr",
  152           &ng_cisco_ipaddr_type,
  153           NULL
  154         },
  155         {
  156           NGM_CISCO_COOKIE,
  157           NGM_CISCO_GET_IPADDR,
  158           "getipaddr",
  159           NULL,
  160           &ng_cisco_ipaddr_type
  161         },
  162         {
  163           NGM_CISCO_COOKIE,
  164           NGM_CISCO_GET_STATUS,
  165           "getstats",
  166           NULL,
  167           &ng_cisco_stats_type
  168         },
  169         { 0 }
  170 };
  171 
  172 /* Node type */
  173 static struct ng_type typestruct = {
  174         NG_ABI_VERSION,
  175         NG_CISCO_NODE_TYPE,
  176         NULL,
  177         cisco_constructor,
  178         cisco_rcvmsg,
  179         cisco_shutdown,
  180         cisco_newhook,
  181         NULL,
  182         NULL,
  183         cisco_rcvdata,
  184         cisco_disconnect,
  185         ng_cisco_cmdlist
  186 };
  187 NETGRAPH_INIT(cisco, &typestruct);
  188 
  189 /*
  190  * Node constructor
  191  */
  192 static int
  193 cisco_constructor(node_p node)
  194 {
  195         sc_p sc;
  196 
  197         MALLOC(sc, sc_p, sizeof(*sc), M_NETGRAPH, M_NOWAIT | M_ZERO);
  198         if (sc == NULL)
  199                 return (ENOMEM);
  200 
  201         callout_handle_init(&sc->handle);
  202         NG_NODE_SET_PRIVATE(node, sc);
  203         sc->node = node;
  204 
  205         /* Initialise the varous protocol hook holders */
  206         sc->downstream.af = 0xffff;
  207         sc->inet.af = AF_INET;
  208         sc->inet6.af = AF_INET6;
  209         sc->atalk.af = AF_APPLETALK;
  210         sc->ipx.af = AF_IPX;
  211         return (0);
  212 }
  213 
  214 /*
  215  * Check new hook
  216  */
  217 static int
  218 cisco_newhook(node_p node, hook_p hook, const char *name)
  219 {
  220         const sc_p sc = NG_NODE_PRIVATE(node);
  221 
  222         if (strcmp(name, NG_CISCO_HOOK_DOWNSTREAM) == 0) {
  223                 sc->downstream.hook = hook;
  224                 NG_HOOK_SET_PRIVATE(hook, &sc->downstream);
  225 
  226                 /* Start keepalives */
  227                 sc->handle = timeout(cisco_keepalive, sc, hz * KEEPALIVE_SECS);
  228         } else if (strcmp(name, NG_CISCO_HOOK_INET) == 0) {
  229                 sc->inet.hook = hook;
  230                 NG_HOOK_SET_PRIVATE(hook, &sc->inet);
  231         } else if (strcmp(name, NG_CISCO_HOOK_APPLETALK) == 0) {
  232                 sc->atalk.hook = hook;
  233                 NG_HOOK_SET_PRIVATE(hook, &sc->atalk);
  234         } else if (strcmp(name, NG_CISCO_HOOK_IPX) == 0) {
  235                 sc->ipx.hook = hook;
  236                 NG_HOOK_SET_PRIVATE(hook, &sc->ipx);
  237         } else if (strcmp(name, NG_CISCO_HOOK_DEBUG) == 0) {
  238                 NG_HOOK_SET_PRIVATE(hook, NULL);        /* unimplemented */
  239         } else
  240                 return (EINVAL);
  241         return 0;
  242 }
  243 
  244 /*
  245  * Receive control message.
  246  */
  247 static int
  248 cisco_rcvmsg(node_p node, item_p item, hook_p lasthook)
  249 {
  250         struct ng_mesg *msg;
  251         const sc_p sc = NG_NODE_PRIVATE(node);
  252         struct ng_mesg *resp = NULL;
  253         int error = 0;
  254 
  255         NGI_GET_MSG(item, msg);
  256         switch (msg->header.typecookie) {
  257         case NGM_GENERIC_COOKIE:
  258                 switch (msg->header.cmd) {
  259                 case NGM_TEXT_STATUS:
  260                     {
  261                         char *arg;
  262                         int pos;
  263 
  264                         NG_MKRESPONSE(resp, msg, sizeof(struct ng_mesg)
  265                             + NG_TEXTRESPONSE, M_NOWAIT);
  266                         if (resp == NULL) {
  267                                 error = ENOMEM;
  268                                 break;
  269                         }
  270                         arg = (char *) resp->data;
  271                         pos = sprintf(arg,
  272                           "keepalive period: %d sec; ", KEEPALIVE_SECS);
  273                         pos += sprintf(arg + pos,
  274                           "unacknowledged keepalives: %ld", sc->seqRetries);
  275                         resp->header.arglen = pos + 1;
  276                         break;
  277                     }
  278                 default:
  279                         error = EINVAL;
  280                         break;
  281                 }
  282                 break;
  283         case NGM_CISCO_COOKIE:
  284                 switch (msg->header.cmd) {
  285                 case NGM_CISCO_GET_IPADDR:      /* could be a late reply! */
  286                         if ((msg->header.flags & NGF_RESP) == 0) {
  287                                 struct in_addr *ips;
  288 
  289                                 NG_MKRESPONSE(resp, msg,
  290                                     2 * sizeof(*ips), M_NOWAIT);
  291                                 if (!resp) {
  292                                         error = ENOMEM;
  293                                         break;
  294                                 }
  295                                 ips = (struct in_addr *) resp->data;
  296                                 ips[0] = sc->localip;
  297                                 ips[1] = sc->localmask;
  298                                 break;
  299                         }
  300                         /* FALLTHROUGH */       /* ...if it's a reply */
  301                 case NGM_CISCO_SET_IPADDR:
  302                     {
  303                         struct in_addr *const ips = (struct in_addr *)msg->data;
  304 
  305                         if (msg->header.arglen < 2 * sizeof(*ips)) {
  306                                 error = EINVAL;
  307                                 break;
  308                         }
  309                         sc->localip = ips[0];
  310                         sc->localmask = ips[1];
  311                         break;
  312                     }
  313                 case NGM_CISCO_GET_STATUS:
  314                     {
  315                         struct ng_cisco_stats *stat;
  316 
  317                         NG_MKRESPONSE(resp, msg, sizeof(*stat), M_NOWAIT);
  318                         if (!resp) {
  319                                 error = ENOMEM;
  320                                 break;
  321                         }
  322                         stat = (struct ng_cisco_stats *)resp->data;
  323                         stat->seqRetries = sc->seqRetries;
  324                         stat->keepAlivePeriod = KEEPALIVE_SECS;
  325                         break;
  326                     }
  327                 default:
  328                         error = EINVAL;
  329                         break;
  330                 }
  331                 break;
  332         default:
  333                 error = EINVAL;
  334                 break;
  335         }
  336         NG_RESPOND_MSG(error, node, item, resp);
  337         NG_FREE_MSG(msg);
  338         return (error);
  339 }
  340 
  341 /*
  342  * Receive data
  343  */
  344 static int
  345 cisco_rcvdata(hook_p hook, item_p item)
  346 {
  347         const sc_p sc = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
  348         struct protoent *pep;
  349         struct cisco_header *h;
  350         int error = 0;
  351         struct mbuf *m;
  352 
  353         if ((pep = NG_HOOK_PRIVATE(hook)) == NULL)
  354                 goto out;
  355 
  356         /* If it came from our downlink, deal with it separately */
  357         if (pep->af == 0xffff)
  358                 return (cisco_input(sc, item));
  359 
  360         /* OK so it came from a protocol, heading out. Prepend general data
  361            packet header. For now, IP,IPX only  */
  362         m = NGI_M(item); /* still associated with item */
  363         M_PREPEND(m, CISCO_HEADER_LEN, M_DONTWAIT);
  364         if (!m) {
  365                 error = ENOBUFS;
  366                 goto out;
  367         }
  368         h = mtod(m, struct cisco_header *);
  369         h->address = CISCO_UNICAST;
  370         h->control = 0;
  371 
  372         switch (pep->af) {
  373         case AF_INET:           /* Internet Protocol */
  374                 h->protocol = htons(ETHERTYPE_IP);
  375                 break;
  376         case AF_INET6:
  377                 h->protocol = htons(ETHERTYPE_IPV6);
  378                 break;
  379         case AF_APPLETALK:      /* AppleTalk Protocol */
  380                 h->protocol = htons(ETHERTYPE_AT);
  381                 break;
  382         case AF_IPX:            /* Novell IPX Protocol */
  383                 h->protocol = htons(ETHERTYPE_IPX);
  384                 break;
  385         default:
  386                 error = EAFNOSUPPORT;
  387                 goto out;
  388         }
  389 
  390         /* Send it */
  391         NG_FWD_NEW_DATA(error, item,  sc->downstream.hook, m);
  392         return (error);
  393 
  394 out:
  395         NG_FREE_ITEM(item);
  396         return (error);
  397 }
  398 
  399 /*
  400  * Shutdown node
  401  */
  402 static int
  403 cisco_shutdown(node_p node)
  404 {
  405         const sc_p sc = NG_NODE_PRIVATE(node);
  406 
  407         NG_NODE_SET_PRIVATE(node, NULL);
  408         NG_NODE_UNREF(sc->node);
  409         FREE(sc, M_NETGRAPH);
  410         return (0);
  411 }
  412 
  413 /*
  414  * Disconnection of a hook
  415  *
  416  * For this type, removal of the last link destroys the node
  417  */
  418 static int
  419 cisco_disconnect(hook_p hook)
  420 {
  421         const sc_p sc = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
  422         struct protoent *pep;
  423 
  424         /* Check it's not the debug hook */
  425         if ((pep = NG_HOOK_PRIVATE(hook))) {
  426                 pep->hook = NULL;
  427                 if (pep->af == 0xffff) {
  428                         /* If it is the downstream hook, stop the timers */
  429                         untimeout(cisco_keepalive, sc, sc->handle);
  430                 }
  431         }
  432 
  433         /* If no more hooks, remove the node */
  434         if ((NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0)
  435         && (NG_NODE_IS_VALID(NG_HOOK_NODE(hook))))
  436                 ng_rmnode_self(NG_HOOK_NODE(hook));
  437         return (0);
  438 }
  439 
  440 /*
  441  * Receive data
  442  */
  443 static int
  444 cisco_input(sc_p sc, item_p item)
  445 {
  446         const struct cisco_header *h;
  447         struct cisco_header hdrbuf;
  448         struct protoent *pep;
  449         int error = 0;
  450         struct mbuf *m;
  451 
  452         /* Get data */
  453         m = NGI_M(item);
  454 
  455         /* Sanity check header length */
  456         if (m->m_pkthdr.len < sizeof(*h)) {
  457                 error = EINVAL;
  458                 goto drop;
  459         }
  460 
  461         /* Get cisco header */
  462         if (m->m_len >= sizeof(*h))                     /* the common case */
  463                 h = mtod(m, const struct cisco_header *);
  464         else {
  465                 m_copydata(m, 0, sizeof(*h), (caddr_t)&hdrbuf);
  466                 h = &hdrbuf;
  467         }
  468         m_adj(m, sizeof(*h));
  469 
  470         /* Check header address */
  471         switch (h->address) {
  472         default:                /* Invalid Cisco packet. */
  473                 goto drop;
  474         case CISCO_UNICAST:
  475         case CISCO_MULTICAST:
  476                 /* Don't check the control field here (RFC 1547). */
  477                 switch (ntohs(h->protocol)) {
  478                 default:
  479                         goto drop;
  480                 case CISCO_KEEPALIVE:
  481                     {
  482                         const struct cisco_packet *p;
  483                         struct cisco_packet pktbuf;
  484 
  485                         /* Sanity check packet length */
  486                         if (m->m_pkthdr.len < sizeof(*p)) {
  487                                 error = EINVAL;
  488                                 goto drop;
  489                         }
  490 
  491                         /* Get cisco packet */
  492                         if (m->m_len >= sizeof(*p))     /* the common case */
  493                                 p = mtod(m, const struct cisco_packet *);
  494                         else {
  495                                 m_copydata(m, 0, sizeof(*p), (caddr_t)&pktbuf);
  496                                 p = &pktbuf;
  497                         }
  498 
  499                         /* Check packet type */
  500                         switch (ntohl(p->type)) {
  501                         default:
  502                                 log(LOG_WARNING,
  503                                     "cisco: unknown cisco packet type: 0x%lx\n",
  504                                        (long)ntohl(p->type));
  505                                 break;
  506                         case CISCO_ADDR_REPLY:
  507                                 /* Reply on address request, ignore */
  508                                 break;
  509                         case CISCO_KEEPALIVE_REQ:
  510                                 sc->remote_seq = ntohl(p->par1);
  511                                 if (sc->local_seq == ntohl(p->par2)) {
  512                                         sc->local_seq++;
  513                                         sc->seqRetries = 0;
  514                                 }
  515                                 break;
  516                         case CISCO_ADDR_REQ:
  517                             {
  518                                 struct ng_mesg *msg;
  519                                 int dummy_error = 0;
  520 
  521                                 /* Ask inet peer for IP address information */
  522                                 if (sc->inet.hook == NULL)
  523                                         goto nomsg;
  524                                 NG_MKMESSAGE(msg, NGM_CISCO_COOKIE,
  525                                     NGM_CISCO_GET_IPADDR, 0, M_NOWAIT);
  526                                 if (msg == NULL)
  527                                         goto nomsg;
  528                                 NG_SEND_MSG_HOOK(dummy_error,
  529                                     sc->node, msg, sc->inet.hook, 0);
  530                 /*
  531                  * XXX Now maybe we should set a flag telling
  532                  * our receiver to send this message when the response comes in
  533                  * instead of now when the data may be bad.
  534                  */
  535                 nomsg:
  536                                 /* Send reply to peer device */
  537                                 error = cisco_send(sc, CISCO_ADDR_REPLY,
  538                                             ntohl(sc->localip.s_addr),
  539                                             ntohl(sc->localmask.s_addr));
  540                                 break;
  541                             }
  542                         }
  543                         goto drop;
  544                     }
  545                 case ETHERTYPE_IP:
  546                         pep = &sc->inet;
  547                         break;
  548                 case ETHERTYPE_IPV6:
  549                         pep = &sc->inet6;
  550                         break;
  551                 case ETHERTYPE_AT:
  552                         pep = &sc->atalk;
  553                         break;
  554                 case ETHERTYPE_IPX:
  555                         pep = &sc->ipx;
  556                         break;
  557                 }
  558                 break;
  559         }
  560 
  561         /* Drop if payload is empty */
  562         if (m->m_pkthdr.len == 0) {
  563                 error = EINVAL;
  564                 goto drop;
  565         }
  566 
  567         /* Send it on */
  568         if (pep->hook == NULL)
  569                 goto drop;
  570         NG_FWD_NEW_DATA(error, item, pep->hook, m);
  571         return (error);
  572 
  573 drop:
  574         NG_FREE_ITEM(item);
  575         return (error);
  576 }
  577 
  578 
  579 /*
  580  * Send keepalive packets, every 10 seconds.
  581  */
  582 static void
  583 cisco_keepalive(void *arg)
  584 {
  585         const sc_p sc = arg;
  586         int s = splimp();
  587 
  588         cisco_send(sc, CISCO_KEEPALIVE_REQ, sc->local_seq, sc->remote_seq);
  589         sc->seqRetries++;
  590         splx(s);
  591         sc->handle = timeout(cisco_keepalive, sc, hz * KEEPALIVE_SECS);
  592 }
  593 
  594 /*
  595  * Send Cisco keepalive packet.
  596  */
  597 static int
  598 cisco_send(sc_p sc, int type, long par1, long par2)
  599 {
  600         struct cisco_header *h;
  601         struct cisco_packet *ch;
  602         struct mbuf *m;
  603         u_long  t;
  604         int     error = 0;
  605         struct timeval time;
  606 
  607         getmicrotime(&time);
  608 
  609         MGETHDR(m, M_DONTWAIT, MT_DATA);
  610         if (!m)
  611                 return (ENOBUFS);
  612 
  613         t = (time.tv_sec - boottime.tv_sec) * 1000;
  614         m->m_pkthdr.len = m->m_len = CISCO_HEADER_LEN + CISCO_PACKET_LEN;
  615         m->m_pkthdr.rcvif = 0;
  616 
  617         h = mtod(m, struct cisco_header *);
  618         h->address = CISCO_MULTICAST;
  619         h->control = 0;
  620         h->protocol = htons(CISCO_KEEPALIVE);
  621 
  622         ch = (struct cisco_packet *) (h + 1);
  623         ch->type = htonl(type);
  624         ch->par1 = htonl(par1);
  625         ch->par2 = htonl(par2);
  626         ch->rel = -1;
  627         ch->time0 = htons((u_short) (t >> 16));
  628         ch->time1 = htons((u_short) t);
  629 
  630         NG_SEND_DATA_ONLY(error, sc->downstream.hook, m);
  631         return (error);
  632 }

Cache object: 35bec986db63c28df3e1113eae0cb939


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