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

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    1 
    2 /*
    3  * ng_async.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: Archie Cobbs <archie@freebsd.org>
   38  *
   39  * $FreeBSD$
   40  * $Whistle: ng_async.c,v 1.17 1999/11/01 09:24:51 julian Exp $
   41  */
   42 
   43 /*
   44  * This node type implements a PPP style sync <-> async converter.
   45  * See RFC 1661 for details of how asynchronous encoding works.
   46  */
   47 
   48 #include <sys/param.h>
   49 #include <sys/systm.h>
   50 #include <sys/kernel.h>
   51 #include <sys/proc.h>
   52 #include <sys/mbuf.h>
   53 #include <sys/malloc.h>
   54 #include <sys/file.h>
   55 #include <sys/errno.h>
   56 
   57 #include <netgraph/ng_message.h>
   58 #include <netgraph/netgraph.h>
   59 #include <netgraph/ng_async.h>
   60 #include <netgraph/ng_parse.h>
   61 
   62 #include <net/ppp_defs.h>
   63 
   64 /* Async decode state */
   65 #define MODE_HUNT       0
   66 #define MODE_NORMAL     1
   67 #define MODE_ESC        2
   68 
   69 /* Private data structure */
   70 struct ng_async_private {
   71         node_p          node;           /* Our node */
   72         hook_p          async;          /* Asynchronous side */
   73         hook_p          sync;           /* Synchronous side */
   74         u_char          amode;          /* Async hunt/esape mode */
   75         u_int16_t       fcs;            /* Decoded async FCS (so far) */
   76         u_char         *abuf;           /* Buffer to encode sync into */
   77         u_char         *sbuf;           /* Buffer to decode async into */
   78         u_int           slen;           /* Length of data in sbuf */
   79         long            lasttime;       /* Time of last async packet sent */
   80         struct          ng_async_cfg    cfg;    /* Configuration */
   81         struct          ng_async_stat   stats;  /* Statistics */
   82 };
   83 typedef struct ng_async_private *sc_p;
   84 
   85 /* Useful macros */
   86 #define ASYNC_BUF_SIZE(smru)    (2 * (smru) + 10)
   87 #define SYNC_BUF_SIZE(amru)     ((amru) + 10)
   88 #define ERROUT(x)               do { error = (x); goto done; } while (0)
   89 
   90 /* Netgraph methods */
   91 static ng_constructor_t         nga_constructor;
   92 static ng_rcvdata_t             nga_rcvdata;
   93 static ng_rcvmsg_t              nga_rcvmsg;
   94 static ng_shutdown_t            nga_shutdown;
   95 static ng_newhook_t             nga_newhook;
   96 static ng_disconnect_t          nga_disconnect;
   97 
   98 /* Helper stuff */
   99 static int      nga_rcv_sync(const sc_p sc, struct mbuf *m, meta_p meta);
  100 static int      nga_rcv_async(const sc_p sc, struct mbuf *m, meta_p meta);
  101 
  102 /* Parse type for struct ng_async_cfg */
  103 static const struct ng_parse_struct_info
  104         nga_config_type_info = NG_ASYNC_CONFIG_TYPE_INFO;
  105 static const struct ng_parse_type nga_config_type = {
  106         &ng_parse_struct_type,
  107         &nga_config_type_info
  108 };
  109 
  110 /* Parse type for struct ng_async_stat */
  111 static const struct ng_parse_struct_info
  112         nga_stats_type_info = NG_ASYNC_STATS_TYPE_INFO;
  113 static const struct ng_parse_type nga_stats_type = {
  114         &ng_parse_struct_type,
  115         &nga_stats_type_info,
  116 };
  117 
  118 /* List of commands and how to convert arguments to/from ASCII */
  119 static const struct ng_cmdlist nga_cmdlist[] = {
  120         {
  121           NGM_ASYNC_COOKIE,
  122           NGM_ASYNC_CMD_SET_CONFIG,
  123           "setconfig",
  124           &nga_config_type,
  125           NULL
  126         },
  127         {
  128           NGM_ASYNC_COOKIE,
  129           NGM_ASYNC_CMD_GET_CONFIG,
  130           "getconfig",
  131           NULL,
  132           &nga_config_type
  133         },
  134         {
  135           NGM_ASYNC_COOKIE,
  136           NGM_ASYNC_CMD_GET_STATS,
  137           "getstats",
  138           NULL,
  139           &nga_stats_type
  140         },
  141         {
  142           NGM_ASYNC_COOKIE,
  143           NGM_ASYNC_CMD_CLR_STATS,
  144           "clrstats",
  145           &nga_stats_type,
  146           NULL
  147         },
  148         { 0 }
  149 };
  150 
  151 /* Define the netgraph node type */
  152 static struct ng_type typestruct = {
  153         NG_VERSION,
  154         NG_ASYNC_NODE_TYPE,
  155         NULL,
  156         nga_constructor,
  157         nga_rcvmsg,
  158         nga_shutdown,
  159         nga_newhook,
  160         NULL,
  161         NULL,
  162         nga_rcvdata,
  163         nga_rcvdata,
  164         nga_disconnect,
  165         nga_cmdlist
  166 };
  167 NETGRAPH_INIT(async, &typestruct);
  168 
  169 /* CRC table */
  170 static const u_int16_t fcstab[];
  171 
  172 /******************************************************************
  173                     NETGRAPH NODE METHODS
  174 ******************************************************************/
  175 
  176 /*
  177  * Initialize a new node
  178  */
  179 static int
  180 nga_constructor(node_p *nodep)
  181 {
  182         sc_p sc;
  183         int error;
  184 
  185         if ((error = ng_make_node_common(&typestruct, nodep)))
  186                 return (error);
  187         MALLOC(sc, sc_p, sizeof(*sc), M_NETGRAPH, M_WAITOK);
  188         if (sc == NULL)
  189                 return (ENOMEM);
  190         bzero(sc, sizeof(*sc));
  191         sc->amode = MODE_HUNT;
  192         sc->cfg.accm = ~0;
  193         sc->cfg.amru = NG_ASYNC_DEFAULT_MRU;
  194         sc->cfg.smru = NG_ASYNC_DEFAULT_MRU;
  195         MALLOC(sc->abuf, u_char *,
  196             ASYNC_BUF_SIZE(sc->cfg.smru), M_NETGRAPH, M_WAITOK);
  197         if (sc->abuf == NULL)
  198                 goto fail;
  199         MALLOC(sc->sbuf, u_char *,
  200             SYNC_BUF_SIZE(sc->cfg.amru), M_NETGRAPH, M_WAITOK);
  201         if (sc->sbuf == NULL) {
  202                 FREE(sc->abuf, M_NETGRAPH);
  203 fail:
  204                 FREE(sc, M_NETGRAPH);
  205                 return (ENOMEM);
  206         }
  207         (*nodep)->private = sc;
  208         sc->node = *nodep;
  209         return (0);
  210 }
  211 
  212 /*
  213  * Reserve a hook for a pending connection
  214  */
  215 static int
  216 nga_newhook(node_p node, hook_p hook, const char *name)
  217 {
  218         const sc_p sc = node->private;
  219         hook_p *hookp;
  220 
  221         if (!strcmp(name, NG_ASYNC_HOOK_ASYNC))
  222                 hookp = &sc->async;
  223         else if (!strcmp(name, NG_ASYNC_HOOK_SYNC))
  224                 hookp = &sc->sync;
  225         else
  226                 return (EINVAL);
  227         if (*hookp)
  228                 return (EISCONN);
  229         *hookp = hook;
  230         return (0);
  231 }
  232 
  233 /*
  234  * Receive incoming data
  235  */
  236 static int
  237 nga_rcvdata(hook_p hook, struct mbuf *m, meta_p meta)
  238 {
  239         const sc_p sc = hook->node->private;
  240 
  241         if (hook == sc->sync)
  242                 return (nga_rcv_sync(sc, m, meta));
  243         if (hook == sc->async)
  244                 return (nga_rcv_async(sc, m, meta));
  245         panic(__FUNCTION__);
  246 }
  247 
  248 /*
  249  * Receive incoming control message
  250  */
  251 static int
  252 nga_rcvmsg(node_p node, struct ng_mesg *msg,
  253         const char *rtn, struct ng_mesg **rptr)
  254 {
  255         const sc_p sc = (sc_p) node->private;
  256         struct ng_mesg *resp = NULL;
  257         int error = 0;
  258 
  259         switch (msg->header.typecookie) {
  260         case NGM_ASYNC_COOKIE:
  261                 switch (msg->header.cmd) {
  262                 case NGM_ASYNC_CMD_GET_STATS:
  263                         NG_MKRESPONSE(resp, msg, sizeof(sc->stats), M_NOWAIT);
  264                         if (resp == NULL)
  265                                 ERROUT(ENOMEM);
  266                         *((struct ng_async_stat *) resp->data) = sc->stats;
  267                         break;
  268                 case NGM_ASYNC_CMD_CLR_STATS:
  269                         bzero(&sc->stats, sizeof(sc->stats));
  270                         break;
  271                 case NGM_ASYNC_CMD_SET_CONFIG:
  272                     {
  273                         struct ng_async_cfg *const cfg =
  274                                 (struct ng_async_cfg *) msg->data;
  275                         u_char *buf;
  276 
  277                         if (msg->header.arglen != sizeof(*cfg))
  278                                 ERROUT(EINVAL);
  279                         if (cfg->amru < NG_ASYNC_MIN_MRU
  280                             || cfg->amru > NG_ASYNC_MAX_MRU
  281                             || cfg->smru < NG_ASYNC_MIN_MRU
  282                             || cfg->smru > NG_ASYNC_MAX_MRU)
  283                                 ERROUT(EINVAL);
  284                         cfg->enabled = !!cfg->enabled;  /* normalize */
  285                         if (cfg->smru > sc->cfg.smru) { /* reallocate buffer */
  286                                 MALLOC(buf, u_char *, ASYNC_BUF_SIZE(cfg->smru),
  287                                     M_NETGRAPH, M_NOWAIT);
  288                                 if (!buf)
  289                                         ERROUT(ENOMEM);
  290                                 FREE(sc->abuf, M_NETGRAPH);
  291                                 sc->abuf = buf;
  292                         }
  293                         if (cfg->amru > sc->cfg.amru) { /* reallocate buffer */
  294                                 MALLOC(buf, u_char *, SYNC_BUF_SIZE(cfg->amru),
  295                                     M_NETGRAPH, M_NOWAIT);
  296                                 if (!buf)
  297                                         ERROUT(ENOMEM);
  298                                 FREE(sc->sbuf, M_NETGRAPH);
  299                                 sc->sbuf = buf;
  300                                 sc->amode = MODE_HUNT;
  301                                 sc->slen = 0;
  302                         }
  303                         if (!cfg->enabled) {
  304                                 sc->amode = MODE_HUNT;
  305                                 sc->slen = 0;
  306                         }
  307                         sc->cfg = *cfg;
  308                         break;
  309                     }
  310                 case NGM_ASYNC_CMD_GET_CONFIG:
  311                         NG_MKRESPONSE(resp, msg, sizeof(sc->cfg), M_NOWAIT);
  312                         if (!resp)
  313                                 ERROUT(ENOMEM);
  314                         *((struct ng_async_cfg *) resp->data) = sc->cfg;
  315                         break;
  316                 default:
  317                         ERROUT(EINVAL);
  318                 }
  319                 break;
  320         default:
  321                 ERROUT(EINVAL);
  322         }
  323         if (rptr)
  324                 *rptr = resp;
  325         else if (resp)
  326                 FREE(resp, M_NETGRAPH);
  327 
  328 done:
  329         FREE(msg, M_NETGRAPH);
  330         return (error);
  331 }
  332 
  333 /*
  334  * Shutdown this node
  335  */
  336 static int
  337 nga_shutdown(node_p node)
  338 {
  339         const sc_p sc = node->private;
  340 
  341         ng_cutlinks(node);
  342         ng_unname(node);
  343         FREE(sc->abuf, M_NETGRAPH);
  344         FREE(sc->sbuf, M_NETGRAPH);
  345         bzero(sc, sizeof(*sc));
  346         FREE(sc, M_NETGRAPH);
  347         node->private = NULL;
  348         ng_unref(node);
  349         return (0);
  350 }
  351 
  352 /*
  353  * Lose a hook. When both hooks go away, we disappear.
  354  */
  355 static int
  356 nga_disconnect(hook_p hook)
  357 {
  358         const sc_p sc = hook->node->private;
  359         hook_p *hookp;
  360 
  361         if (hook == sc->async)
  362                 hookp = &sc->async;
  363         else if (hook == sc->sync)
  364                 hookp = &sc->sync;
  365         else
  366                 panic(__FUNCTION__);
  367         if (!*hookp)
  368                 panic(__FUNCTION__ "2");
  369         *hookp = NULL;
  370         bzero(&sc->stats, sizeof(sc->stats));
  371         sc->lasttime = 0;
  372         if (hook->node->numhooks == 0)
  373                 ng_rmnode(hook->node);
  374         return (0);
  375 }
  376 
  377 /******************************************************************
  378                     INTERNAL HELPER STUFF
  379 ******************************************************************/
  380 
  381 /*
  382  * Encode a byte into the async buffer
  383  */
  384 static __inline__ void
  385 nga_async_add(const sc_p sc, u_int16_t *fcs, u_int32_t accm, int *len, u_char x)
  386 {
  387         *fcs = PPP_FCS(*fcs, x);
  388         if ((x < 32 && ((1 << x) & accm))
  389             || (x == PPP_ESCAPE)
  390             || (x == PPP_FLAG)) {
  391                 sc->abuf[(*len)++] = PPP_ESCAPE;
  392                 x ^= PPP_TRANS;
  393         }
  394         sc->abuf[(*len)++] = x;
  395 }
  396 
  397 /*
  398  * Receive incoming synchronous data.
  399  */
  400 static int
  401 nga_rcv_sync(const sc_p sc, struct mbuf *m, meta_p meta)
  402 {
  403         struct ifnet *const rcvif = m->m_pkthdr.rcvif;
  404         int alen, error = 0;
  405         struct timeval time;
  406         u_int16_t fcs, fcs0;
  407         u_int32_t accm;
  408 
  409 #define ADD_BYTE(x)     nga_async_add(sc, &fcs, accm, &alen, (x))
  410 
  411         /* Check for bypass mode */
  412         if (!sc->cfg.enabled) {
  413                 NG_SEND_DATA(error, sc->async, m, meta);
  414                 return (error);
  415         }
  416 
  417         /* Get ACCM; special case LCP frames, which use full ACCM */
  418         accm = sc->cfg.accm;
  419         if (m->m_pkthdr.len >= 4) {
  420                 static const u_char lcphdr[4] = {
  421                     PPP_ALLSTATIONS,
  422                     PPP_UI,
  423                     (u_char)(PPP_LCP >> 8),
  424                     (u_char)(PPP_LCP & 0xff)
  425                 };
  426                 u_char buf[4];
  427 
  428                 m_copydata(m, 0, 4, (caddr_t)buf);
  429                 if (bcmp(buf, &lcphdr, 4) == 0)
  430                         accm = ~0;
  431         }
  432 
  433         /* Check for overflow */
  434         if (m->m_pkthdr.len > sc->cfg.smru) {
  435                 sc->stats.syncOverflows++;
  436                 NG_FREE_DATA(m, meta);
  437                 return (EMSGSIZE);
  438         }
  439 
  440         /* Update stats */
  441         sc->stats.syncFrames++;
  442         sc->stats.syncOctets += m->m_pkthdr.len;
  443 
  444         /* Initialize async encoded version of input mbuf */
  445         alen = 0;
  446         fcs = PPP_INITFCS;
  447 
  448         /* Add beginning sync flag if it's been long enough to need one */
  449         getmicrotime(&time);
  450         if (time.tv_sec >= sc->lasttime + 1) {
  451                 sc->abuf[alen++] = PPP_FLAG;
  452                 sc->lasttime = time.tv_sec;
  453         }
  454 
  455         /* Add packet payload */
  456         while (m != NULL) {
  457                 struct mbuf *n;
  458 
  459                 while (m->m_len > 0) {
  460                         ADD_BYTE(*mtod(m, u_char *));
  461                         m->m_data++;
  462                         m->m_len--;
  463                 }
  464                 MFREE(m, n);
  465                 m = n;
  466         }
  467 
  468         /* Add checksum and final sync flag */
  469         fcs0 = fcs;
  470         ADD_BYTE(~fcs0 & 0xff);
  471         ADD_BYTE(~fcs0 >> 8);
  472         sc->abuf[alen++] = PPP_FLAG;
  473 
  474         /* Put frame in an mbuf and ship it off */
  475         if (!(m = m_devget(sc->abuf, alen, 0, rcvif, NULL))) {
  476                 NG_FREE_META(meta);
  477                 error = ENOBUFS;
  478         } else
  479                 NG_SEND_DATA(error, sc->async, m, meta);
  480         return (error);
  481 }
  482 
  483 /*
  484  * Receive incoming asynchronous data
  485  * XXX Technically, we should strip out incoming characters
  486  *     that are in our ACCM. Not sure if this is good or not.
  487  */
  488 static int
  489 nga_rcv_async(const sc_p sc, struct mbuf * m, meta_p meta)
  490 {
  491         struct ifnet *const rcvif = m->m_pkthdr.rcvif;
  492         int error;
  493 
  494         if (!sc->cfg.enabled) {
  495                 NG_SEND_DATA(error, sc->sync, m, meta);
  496                 return (error);
  497         }
  498         NG_FREE_META(meta);
  499         while (m) {
  500                 struct mbuf *n;
  501 
  502                 for (; m->m_len > 0; m->m_data++, m->m_len--) {
  503                         u_char  ch = *mtod(m, u_char *);
  504 
  505                         sc->stats.asyncOctets++;
  506                         if (ch == PPP_FLAG) {   /* Flag overrides everything */
  507                                 int     skip = 0;
  508 
  509                                 /* Check for runts */
  510                                 if (sc->slen < 2) {
  511                                         if (sc->slen > 0)
  512                                                 sc->stats.asyncRunts++;
  513                                         goto reset;
  514                                 }
  515 
  516                                 /* Verify CRC */
  517                                 if (sc->fcs != PPP_GOODFCS) {
  518                                         sc->stats.asyncBadCheckSums++;
  519                                         goto reset;
  520                                 }
  521                                 sc->slen -= 2;
  522 
  523                                 /* Strip address and control fields */
  524                                 if (sc->slen >= 2
  525                                     && sc->sbuf[0] == PPP_ALLSTATIONS
  526                                     && sc->sbuf[1] == PPP_UI)
  527                                         skip = 2;
  528 
  529                                 /* Check for frame too big */
  530                                 if (sc->slen - skip > sc->cfg.amru) {
  531                                         sc->stats.asyncOverflows++;
  532                                         goto reset;
  533                                 }
  534 
  535                                 /* OK, ship it out */
  536                                 if ((n = m_devget(sc->sbuf + skip,
  537                                            sc->slen - skip, 0, rcvif, NULL)))
  538                                         NG_SEND_DATA(error, sc->sync, n, meta);
  539                                 sc->stats.asyncFrames++;
  540 reset:
  541                                 sc->amode = MODE_NORMAL;
  542                                 sc->fcs = PPP_INITFCS;
  543                                 sc->slen = 0;
  544                                 continue;
  545                         }
  546                         switch (sc->amode) {
  547                         case MODE_NORMAL:
  548                                 if (ch == PPP_ESCAPE) {
  549                                         sc->amode = MODE_ESC;
  550                                         continue;
  551                                 }
  552                                 break;
  553                         case MODE_ESC:
  554                                 ch ^= PPP_TRANS;
  555                                 sc->amode = MODE_NORMAL;
  556                                 break;
  557                         case MODE_HUNT:
  558                         default:
  559                                 continue;
  560                         }
  561 
  562                         /* Add byte to frame */
  563                         if (sc->slen >= SYNC_BUF_SIZE(sc->cfg.amru)) {
  564                                 sc->stats.asyncOverflows++;
  565                                 sc->amode = MODE_HUNT;
  566                                 sc->slen = 0;
  567                         } else {
  568                                 sc->sbuf[sc->slen++] = ch;
  569                                 sc->fcs = PPP_FCS(sc->fcs, ch);
  570                         }
  571                 }
  572                 MFREE(m, n);
  573                 m = n;
  574         }
  575         return (0);
  576 }
  577 
  578 /*
  579  * CRC table
  580  *
  581  * Taken from RFC 1171 Appendix B
  582  */
  583 static const u_int16_t fcstab[256] = {
  584          0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
  585          0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
  586          0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
  587          0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
  588          0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
  589          0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
  590          0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
  591          0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
  592          0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
  593          0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
  594          0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
  595          0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
  596          0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
  597          0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
  598          0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
  599          0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
  600          0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
  601          0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
  602          0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
  603          0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
  604          0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
  605          0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
  606          0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
  607          0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
  608          0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
  609          0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
  610          0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
  611          0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
  612          0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
  613          0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
  614          0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
  615          0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
  616 };

Cache object: c24f436e51b8638c1fd30b5c43c5b17b


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