Annotation of 43BSDReno/sys/vaxif/if_il.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1982, 1986 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution is only permitted until one year after the first shipment
                      6:  * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
                      7:  * binary forms are permitted provided that: (1) source distributions retain
                      8:  * this entire copyright notice and comment, and (2) distributions including
                      9:  * binaries display the following acknowledgement:  This product includes
                     10:  * software developed by the University of California, Berkeley and its
                     11:  * contributors'' in the documentation or other materials provided with the
                     12:  * distribution and in all advertising materials mentioning features or use
                     13:  * of this software.  Neither the name of the University nor the names of
                     14:  * its contributors may be used to endorse or promote products derived from
                     15:  * this software without specific prior written permission.
                     16:  * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     17:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     18:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     19:  *
                     20:  *     @(#)if_il.c     7.7 (Berkeley) 6/28/90
                     21:  */
                     22: 
                     23: #include "il.h"
                     24: #if NIL > 0
                     25: 
                     26: /*
                     27:  * Interlan Ethernet Communications Controller interface
                     28:  */
                     29: #include "machine/pte.h"
                     30: 
                     31: #include "param.h"
                     32: #include "systm.h"
                     33: #include "mbuf.h"
                     34: #include "buf.h"
                     35: #include "protosw.h"
                     36: #include "socket.h"
                     37: #include "vmmac.h"
                     38: #include "ioctl.h"
                     39: #include "errno.h"
                     40: #include "syslog.h"
                     41: 
                     42: #include "../net/if.h"
                     43: #include "../net/netisr.h"
                     44: #include "../net/route.h"
                     45: 
                     46: #ifdef INET
                     47: #include "../netinet/in.h"
                     48: #include "../netinet/in_systm.h"
                     49: #include "../netinet/in_var.h"
                     50: #include "../netinet/ip.h"
                     51: #include "../netinet/if_ether.h"
                     52: #endif
                     53: 
                     54: #ifdef NS
                     55: #include "../netns/ns.h"
                     56: #include "../netns/ns_if.h"
                     57: #endif
                     58: 
                     59: #include "../vax/cpu.h"
                     60: #include "../vax/mtpr.h"
                     61: #include "if_il.h"
                     62: #include "if_ilreg.h"
                     63: #include "if_uba.h"
                     64: #include "../vaxuba/ubareg.h"
                     65: #include "../vaxuba/ubavar.h"
                     66: 
                     67: int    ilprobe(), ilattach(), ilrint(), ilcint();
                     68: struct uba_device *ilinfo[NIL];
                     69: u_short ilstd[] = { 0 };
                     70: struct uba_driver ildriver =
                     71:        { ilprobe, 0, ilattach, 0, ilstd, "il", ilinfo };
                     72: #define        ILUNIT(x)       minor(x)
                     73: int    ilinit(),iloutput(),ilioctl(),ilreset(),ilwatch(),ilstart();
                     74: int    ildebug = 0;
                     75: 
                     76: /*
                     77:  * Ethernet software status per interface.
                     78:  *
                     79:  * Each interface is referenced by a network interface structure,
                     80:  * is_if, which the routing code uses to locate the interface.
                     81:  * This structure contains the output queue for the interface, its address, ...
                     82:  * We also have, for each interface, a UBA interface structure, which
                     83:  * contains information about the UNIBUS resources held by the interface:
                     84:  * map registers, buffered data paths, etc.  Information is cached in this
                     85:  * structure for use by the if_uba.c routines in running the interface
                     86:  * efficiently.
                     87:  */
                     88: 
                     89: struct ether_addr {
                     90:        u_char  addr[6];
                     91: };
                     92: struct il_softc {
                     93:        struct  arpcom is_ac;           /* Ethernet common part */
                     94: #define        is_if   is_ac.ac_if             /* network-visible interface */
                     95: #define        is_addr is_ac.ac_enaddr         /* hardware Ethernet address */
                     96:        struct  ifuba is_ifuba;         /* UNIBUS resources */
                     97:        int     is_flags;
                     98: #define        ILF_RCVPENDING  0x2             /* start rcv in ilcint */
                     99: #define        ILF_STATPENDING 0x4             /* stat cmd pending */
                    100: #define        ILF_RUNNING     0x8             /* board is running */
                    101: #define        ILF_SETADDR     0x10            /* physical address is changed */
                    102:        short   is_lastcmd;             /* can't read csr, so must save it */
                    103:        short   is_scaninterval;        /* interval of stat collection */
                    104: #define        ILWATCHINTERVAL 60              /* once every 60 seconds */
                    105:        union {
                    106:            struct      il_stats isu_stats;     /* holds on-board statistics */
                    107:            struct      ether_addr isu_maddrs[63];      /* multicast addrs */
                    108:        }       is_isu;
                    109: #define is_stats       is_isu.isu_stats
                    110: #define is_maddrs      is_isu.isu_maddrs
                    111:        struct  il_stats is_sum;        /* summation over time */
                    112:        int     is_ubaddr;              /* mapping registers of is_stats */
                    113: } il_softc[NIL];
                    114: 
                    115: ilprobe(reg)
                    116:        caddr_t reg;
                    117: {
                    118:        register int br, cvec;          /* r11, r10 value-result */
                    119:        register struct ildevice *addr = (struct ildevice *)reg;
                    120:        register i;
                    121: 
                    122: #ifdef lint
                    123:        br = 0; cvec = br; br = cvec;
                    124:        i = 0; ilrint(i); ilcint(i); ilwatch(i);
                    125: #endif
                    126: 
                    127:        addr->il_csr = ILC_OFFLINE|IL_CIE;
                    128:        DELAY(100000);
                    129:        i = addr->il_csr;               /* clear CDONE */
                    130:        if (cvec > 0 && cvec != 0x200)
                    131:                cvec -= 4;
                    132:        return (1);
                    133: }
                    134: 
                    135: /*
                    136:  * Interface exists: make available by filling in network interface
                    137:  * record.  System will initialize the interface when it is ready
                    138:  * to accept packets.  A STATUS command is done to get the ethernet
                    139:  * address and other interesting data.
                    140:  */
                    141: ilattach(ui)
                    142:        struct uba_device *ui;
                    143: {
                    144:        register struct il_softc *is = &il_softc[ui->ui_unit];
                    145:        register struct ifnet *ifp = &is->is_if;
                    146:        register struct ildevice *addr = (struct ildevice *)ui->ui_addr;
                    147: 
                    148:        ifp->if_unit = ui->ui_unit;
                    149:        ifp->if_name = "il";
                    150:        ifp->if_mtu = ETHERMTU;
                    151:        ifp->if_flags = IFF_BROADCAST;
                    152: 
                    153:        /*
                    154:         * Reset the board and map the statistics
                    155:         * buffer onto the Unibus.
                    156:         */
                    157:        addr->il_csr = ILC_RESET;
                    158:        (void)ilwait(ui, "reset");
                    159:        
                    160:        is->is_ubaddr = uballoc(ui->ui_ubanum, (caddr_t)&is->is_stats,
                    161:            sizeof (struct il_stats), 0);
                    162:        addr->il_bar = is->is_ubaddr & 0xffff;
                    163:        addr->il_bcr = sizeof (struct il_stats);
                    164:        addr->il_csr = ((is->is_ubaddr >> 2) & IL_EUA)|ILC_STAT;
                    165:        (void)ilwait(ui, "status");
                    166:        ubarelse(ui->ui_ubanum, &is->is_ubaddr);
                    167:        if (ildebug)
                    168:                printf("il%d: module=%s firmware=%s\n", ui->ui_unit,
                    169:                        is->is_stats.ils_module, is->is_stats.ils_firmware);
                    170:        bcopy((caddr_t)is->is_stats.ils_addr, (caddr_t)is->is_addr,
                    171:            sizeof (is->is_addr));
                    172:        printf("il%d: hardware address %s\n", ui->ui_unit,
                    173:                ether_sprintf(is->is_addr));
                    174:        ifp->if_init = ilinit;
                    175:        ifp->if_output = ether_output;
                    176:        ifp->if_ioctl = ilioctl;
                    177:        ifp->if_reset = ilreset;
                    178:        ifp->if_start = ilstart;
                    179:        is->is_ifuba.ifu_flags = UBA_CANTWAIT;
                    180:        if_attach(ifp);
                    181: }
                    182: 
                    183: ilwait(ui, op)
                    184:        struct uba_device *ui;
                    185:        char *op;
                    186: {
                    187:        register struct ildevice *addr = (struct ildevice *)ui->ui_addr;
                    188: 
                    189:        while ((addr->il_csr&IL_CDONE) == 0)
                    190:                ;
                    191:        if (addr->il_csr&IL_STATUS) {
                    192:                printf("il%d: %s failed, csr=%b\n", ui->ui_unit, op,
                    193:                        addr->il_csr, IL_BITS);
                    194:                return (-1);
                    195:        }
                    196:        return (0);
                    197: }
                    198: 
                    199: /*
                    200:  * Reset of interface after UNIBUS reset.
                    201:  * If interface is on specified uba, reset its state.
                    202:  */
                    203: ilreset(unit, uban)
                    204:        int unit, uban;
                    205: {
                    206:        register struct uba_device *ui;
                    207: 
                    208:        if (unit >= NIL || (ui = ilinfo[unit]) == 0 || ui->ui_alive == 0 ||
                    209:            ui->ui_ubanum != uban)
                    210:                return;
                    211:        printf(" il%d", unit);
                    212:        il_softc[unit].is_if.if_flags &= ~IFF_RUNNING;
                    213:        il_softc[unit].is_flags &= ~ILF_RUNNING;
                    214:        ilinit(unit);
                    215: }
                    216: 
                    217: /*
                    218:  * Initialization of interface; clear recorded pending
                    219:  * operations, and reinitialize UNIBUS usage.
                    220:  */
                    221: ilinit(unit)
                    222:        int unit;
                    223: {
                    224:        register struct il_softc *is = &il_softc[unit];
                    225:        register struct uba_device *ui = ilinfo[unit];
                    226:        register struct ildevice *addr;
                    227:        register struct ifnet *ifp = &is->is_if;
                    228:        int s;
                    229: 
                    230:        /* not yet, if address still unknown */
                    231:        if (ifp->if_addrlist == (struct ifaddr *)0)
                    232:                return;
                    233:        if (is->is_flags & ILF_RUNNING)
                    234:                return;
                    235: 
                    236:        if ((ifp->if_flags & IFF_RUNNING) == 0) {
                    237:                if (if_ubainit(&is->is_ifuba, ui->ui_ubanum,
                    238:                    sizeof (struct il_rheader), (int)btoc(ETHERMTU)) == 0) { 
                    239:                        printf("il%d: can't initialize\n", unit);
                    240:                        is->is_if.if_flags &= ~IFF_UP;
                    241:                        return;
                    242:                }
                    243:                is->is_ubaddr = uballoc(ui->ui_ubanum, (caddr_t)&is->is_isu,
                    244:                    sizeof (is->is_isu), 0);
                    245:        }
                    246:        ifp->if_watchdog = ilwatch;
                    247:        is->is_scaninterval = ILWATCHINTERVAL;
                    248:        ifp->if_timer = is->is_scaninterval;
                    249:        addr = (struct ildevice *)ui->ui_addr;
                    250: 
                    251:        /*
                    252:         * Turn off source address insertion (it's faster this way),
                    253:         * and set board online.  Former doesn't work if board is
                    254:         * already online (happens on ubareset), so we put it offline
                    255:         * first.
                    256:         */
                    257:        s = splimp();
                    258:        addr->il_csr = ILC_RESET;
                    259:        if (ilwait(ui, "hardware diag")) {
                    260:                is->is_if.if_flags &= ~IFF_UP;
                    261:                splx(s);
                    262:                return;
                    263:        }
                    264:        addr->il_csr = ILC_CISA;
                    265:        while ((addr->il_csr & IL_CDONE) == 0)
                    266:                ;
                    267:        /*
                    268:         * If we must reprogram this board's physical ethernet
                    269:         * address (as for secondary XNS interfaces), we do so
                    270:         * before putting it on line, and starting receive requests.
                    271:         * If you try this on an older 1010 board, it will total
                    272:         * wedge the board.
                    273:         */
                    274:        if (is->is_flags & ILF_SETADDR) {
                    275:                bcopy((caddr_t)is->is_addr, (caddr_t)&is->is_isu,
                    276:                                                        sizeof is->is_addr);
                    277:                addr->il_bar = is->is_ubaddr & 0xffff;
                    278:                addr->il_bcr = sizeof is->is_addr;
                    279:                addr->il_csr = ((is->is_ubaddr >> 2) & IL_EUA)|ILC_LDPA;
                    280:                if (ilwait(ui, "setaddr"))
                    281:                        return;
                    282:                addr->il_bar = is->is_ubaddr & 0xffff;
                    283:                addr->il_bcr = sizeof (struct il_stats);
                    284:                addr->il_csr = ((is->is_ubaddr >> 2) & IL_EUA)|ILC_STAT;
                    285:                if (ilwait(ui, "verifying setaddr"))
                    286:                        return;
                    287:                if (bcmp((caddr_t)is->is_stats.ils_addr, (caddr_t)is->is_addr,
                    288:                                                sizeof (is->is_addr)) != 0) {
                    289:                        printf("il%d: setaddr didn't work\n", ui->ui_unit);
                    290:                        return;
                    291:                }
                    292:        }
                    293: #ifdef MULTICAST
                    294:        if (is->is_if.if_flags & IFF_PROMISC) {
                    295:                addr->il_csr = ILC_PRMSC;
                    296:                if (ilwait(ui, "all multi"))
                    297:                        return;
                    298:        } else if (is->is_if.if_flags & IFF_ALLMULTI) {
                    299:        too_many_multis:
                    300:                addr->il_csr = ILC_ALLMC;
                    301:                if (ilwait(ui, "all multi"))
                    302:                        return;
                    303:        else {
                    304:                int i;
                    305:                register struct ether_addr *ep = is->is_maddrs;
                    306:                struct ether_multi *enm;
                    307:                struct ether_multistep step;
                    308:                /*
                    309:                 * Step through our list of multicast addresses.  If we have
                    310:                 * too many multicast addresses, or if we have to listen to
                    311:                 * a range of multicast addresses, turn on reception of all
                    312:                 * multicasts.
                    313:                 */
                    314:                i = 0;
                    315:                ETHER_FIRST_MULTI(step, &is->is_ac, enm);
                    316:                while (enm != NULL) {
                    317:                        if (++i > 63 && k != 0) {
                    318:                                break;
                    319:                        }
                    320:                        *ep++ = *(struct ether_addr *)enm->enm_addrlo;
                    321:                        ETHER_NEXT_MULTI(step, enm);
                    322:                }
                    323:                if (i = 0) {
                    324:                        /* no multicasts! */
                    325:                } else if (i <= 63) {
                    326:                        addr->il_bar = is->is_ubaddr & 0xffff;
                    327:                        addr->il_bcr = i * sizeof (struct ether_addr);
                    328:                        addr->il_csr = ((is->is_ubaddr >> 2) & IL_EUA)|
                    329:                                                LC_LDGRPS;
                    330:                        if (ilwait(ui, "load multi"))
                    331:                                return;
                    332:                } else {
                    333:                    is->is_if.if_flags |= IFF_ALLMULTI;
                    334:                    goto too_many_multis;
                    335:                }
                    336:        }
                    337: #endif MULTI
                    338:        /*
                    339:         * Set board online.
                    340:         * Hang receive buffer and start any pending
                    341:         * writes by faking a transmit complete.
                    342:         * Receive bcr is not a multiple of 8 so buffer
                    343:         * chaining can't happen.
                    344:         */
                    345:        addr->il_csr = ILC_ONLINE;
                    346:        while ((addr->il_csr & IL_CDONE) == 0)
                    347:                ;
                    348:        addr->il_bar = is->is_ifuba.ifu_r.ifrw_info & 0xffff;
                    349:        addr->il_bcr = sizeof(struct il_rheader) + ETHERMTU + 6;
                    350:        addr->il_csr =
                    351:            ((is->is_ifuba.ifu_r.ifrw_info >> 2) & IL_EUA)|ILC_RCV|IL_RIE;
                    352:        while ((addr->il_csr & IL_CDONE) == 0)
                    353:                ;
                    354:        is->is_if.if_flags |= IFF_RUNNING | IFF_OACTIVE;
                    355:        is->is_flags |= ILF_RUNNING;
                    356:        is->is_lastcmd = 0;
                    357:        ilcint(unit);
                    358:        splx(s);
                    359: }
                    360: 
                    361: /*
                    362:  * Start output on interface.
                    363:  * Get another datagram to send off of the interface queue,
                    364:  * and map it to the interface before starting the output.
                    365:  */
                    366: ilstart(ifp)
                    367:        register struct ifnet *ifp;
                    368: {
                    369:         int unit = ifp->if_unit, len;
                    370:        struct uba_device *ui = ilinfo[unit];
                    371:        register struct il_softc *is = &il_softc[unit];
                    372:        register struct ildevice *addr;
                    373:        struct mbuf *m;
                    374:        short csr;
                    375: 
                    376:        IF_DEQUEUE(&is->is_if.if_snd, m);
                    377:        addr = (struct ildevice *)ui->ui_addr;
                    378:        if (m == 0) {
                    379:                if ((is->is_flags & ILF_STATPENDING) == 0)
                    380:                        return (0);
                    381:                addr->il_bar = is->is_ubaddr & 0xffff;
                    382:                addr->il_bcr = sizeof (struct il_stats);
                    383:                csr = ((is->is_ubaddr >> 2) & IL_EUA)|ILC_STAT|IL_RIE|IL_CIE;
                    384:                is->is_flags &= ~ILF_STATPENDING;
                    385:                goto startcmd;
                    386:        }
                    387:        len = if_wubaput(&is->is_ifuba, m);
                    388:        /*
                    389:         * Ensure minimum packet length.
                    390:         * This makes the safe assumtion that there are no virtual holes
                    391:         * after the data.
                    392:         * For security, it might be wise to zero out the added bytes,
                    393:         * but we're mainly interested in speed at the moment.
                    394:         */
                    395:        if (len - sizeof(struct ether_header) < ETHERMIN)
                    396:                len = ETHERMIN + sizeof(struct ether_header);
                    397:        if (is->is_ifuba.ifu_flags & UBA_NEEDBDP)
                    398:                UBAPURGE(is->is_ifuba.ifu_uba, is->is_ifuba.ifu_w.ifrw_bdp);
                    399:        addr->il_bar = is->is_ifuba.ifu_w.ifrw_info & 0xffff;
                    400:        addr->il_bcr = len;
                    401:        csr =
                    402:          ((is->is_ifuba.ifu_w.ifrw_info >> 2) & IL_EUA)|ILC_XMIT|IL_CIE|IL_RIE;
                    403: 
                    404: startcmd:
                    405:        is->is_lastcmd = csr & IL_CMD;
                    406:        addr->il_csr = csr;
                    407:        is->is_if.if_flags |= IFF_OACTIVE;
                    408:        return (0);
                    409: }
                    410: 
                    411: /*
                    412:  * Command done interrupt.
                    413:  */
                    414: ilcint(unit)
                    415:        int unit;
                    416: {
                    417:        register struct il_softc *is = &il_softc[unit];
                    418:        struct uba_device *ui = ilinfo[unit];
                    419:        register struct ildevice *addr = (struct ildevice *)ui->ui_addr;
                    420:        short csr;
                    421: 
                    422:        if ((is->is_if.if_flags & IFF_OACTIVE) == 0) {
                    423:                printf("il%d: stray xmit interrupt, csr=%b\n", unit,
                    424:                        addr->il_csr, IL_BITS);
                    425:                return;
                    426:        }
                    427: 
                    428:        csr = addr->il_csr;
                    429:        /*
                    430:         * Hang receive buffer if it couldn't
                    431:         * be done earlier (in ilrint).
                    432:         */
                    433:        if (is->is_flags & ILF_RCVPENDING) {
                    434:                int s;
                    435: 
                    436:                addr->il_bar = is->is_ifuba.ifu_r.ifrw_info & 0xffff;
                    437:                addr->il_bcr = sizeof(struct il_rheader) + ETHERMTU + 6;
                    438:                addr->il_csr =
                    439:                  ((is->is_ifuba.ifu_r.ifrw_info >> 2) & IL_EUA)|ILC_RCV|IL_RIE;
                    440:                s = splhigh();
                    441:                while ((addr->il_csr & IL_CDONE) == 0)
                    442:                        ;
                    443:                splx(s);
                    444:                is->is_flags &= ~ILF_RCVPENDING;
                    445:        }
                    446:        is->is_if.if_flags &= ~IFF_OACTIVE;
                    447:        csr &= IL_STATUS;
                    448:        switch (is->is_lastcmd) {
                    449: 
                    450:        case ILC_XMIT:
                    451:                is->is_if.if_opackets++;
                    452:                if (csr > ILERR_RETRIES)
                    453:                        is->is_if.if_oerrors++;
                    454:                break;
                    455: 
                    456:        case ILC_STAT:
                    457:                if (csr == ILERR_SUCCESS)
                    458:                        iltotal(is);
                    459:                break;
                    460:        }
                    461:        if (is->is_ifuba.ifu_xtofree) {
                    462:                m_freem(is->is_ifuba.ifu_xtofree);
                    463:                is->is_ifuba.ifu_xtofree = 0;
                    464:        }
                    465:        (void) ilstart(&is->is_if);
                    466: }
                    467: 
                    468: /*
                    469:  * Ethernet interface receiver interrupt.
                    470:  * If input error just drop packet.
                    471:  * Otherwise purge input buffered data path and examine 
                    472:  * packet to determine type.  If can't determine length
                    473:  * from type, then have to drop packet.  Othewise decapsulate
                    474:  * packet based on type and pass to type specific higher-level
                    475:  * input routine.
                    476:  */
                    477: ilrint(unit)
                    478:        int unit;
                    479: {
                    480:        register struct il_softc *is = &il_softc[unit];
                    481:        struct ildevice *addr = (struct ildevice *)ilinfo[unit]->ui_addr;
                    482:        register struct il_rheader *il;
                    483:        struct mbuf *m;
                    484:        int len, off, resid, s;
                    485:        register struct ifqueue *inq;
                    486: 
                    487:        is->is_if.if_ipackets++;
                    488:        if (is->is_ifuba.ifu_flags & UBA_NEEDBDP)
                    489:                UBAPURGE(is->is_ifuba.ifu_uba, is->is_ifuba.ifu_r.ifrw_bdp);
                    490:        il = (struct il_rheader *)(is->is_ifuba.ifu_r.ifrw_addr);
                    491:        len = il->ilr_length - sizeof(struct il_rheader);
                    492:        if ((il->ilr_status&(ILFSTAT_A|ILFSTAT_C)) || len < 46 ||
                    493:            len > ETHERMTU) {
                    494:                is->is_if.if_ierrors++;
                    495: #ifdef notdef
                    496:                if (is->is_if.if_ierrors % 100 == 0)
                    497:                        printf("il%d: += 100 input errors\n", unit);
                    498: #endif
                    499:                goto setup;
                    500:        }
                    501: 
                    502:        /*
                    503:         * Deal with trailer protocol: if type is trailer type
                    504:         * get true type from first 16-bit word past data.
                    505:         * Remember that type was trailer by setting off.
                    506:         */
                    507:        il->ilr_type = ntohs((u_short)il->ilr_type);
                    508: #define        ildataaddr(il, off, type)       ((type)(((caddr_t)((il)+1)+(off))))
                    509:        if (il->ilr_type >= ETHERTYPE_TRAIL &&
                    510:            il->ilr_type < ETHERTYPE_TRAIL+ETHERTYPE_NTRAILER) {
                    511:                off = (il->ilr_type - ETHERTYPE_TRAIL) * 512;
                    512:                if (off >= ETHERMTU)
                    513:                        goto setup;             /* sanity */
                    514:                il->ilr_type = ntohs(*ildataaddr(il, off, u_short *));
                    515:                resid = ntohs(*(ildataaddr(il, off+2, u_short *)));
                    516:                if (off + resid > len)
                    517:                        goto setup;             /* sanity */
                    518:                len = off + resid;
                    519:        } else
                    520:                off = 0;
                    521:        if (len == 0)
                    522:                goto setup;
                    523: 
                    524:        /*
                    525:         * Pull packet off interface.  Off is nonzero if packet
                    526:         * has trailing header; ilget will then force this header
                    527:         * information to be at the front, but we still have to drop
                    528:         * the type and length which are at the front of any trailer data.
                    529:         */
                    530:        m = if_rubaget(&is->is_ifuba, len, off, &is->is_if);
                    531:        if (m)
                    532:                ether_input(&is->is_if, (struct ether_header *)il->ilr_dhost, m);
                    533: setup:
                    534:        /*
                    535:         * Reset for next packet if possible.
                    536:         * If waiting for transmit command completion, set flag
                    537:         * and wait until command completes.
                    538:         */
                    539:        if (is->is_if.if_flags & IFF_OACTIVE) {
                    540:                is->is_flags |= ILF_RCVPENDING;
                    541:                return;
                    542:        }
                    543:        addr->il_bar = is->is_ifuba.ifu_r.ifrw_info & 0xffff;
                    544:        addr->il_bcr = sizeof(struct il_rheader) + ETHERMTU + 6;
                    545:        addr->il_csr =
                    546:                ((is->is_ifuba.ifu_r.ifrw_info >> 2) & IL_EUA)|ILC_RCV|IL_RIE;
                    547:        s = splhigh();
                    548:        while ((addr->il_csr & IL_CDONE) == 0)
                    549:                ;
                    550:        splx(s);
                    551: }
                    552: /*
                    553:  * Watchdog routine, request statistics from board.
                    554:  */
                    555: ilwatch(unit)
                    556:        int unit;
                    557: {
                    558:        register struct il_softc *is = &il_softc[unit];
                    559:        register struct ifnet *ifp = &is->is_if;
                    560:        int s;
                    561: 
                    562:        if (is->is_flags & ILF_STATPENDING) {
                    563:                ifp->if_timer = is->is_scaninterval;
                    564:                return;
                    565:        }
                    566:        s = splimp();
                    567:        is->is_flags |= ILF_STATPENDING;
                    568:        if ((is->is_if.if_flags & IFF_OACTIVE) == 0)
                    569:                (void) ilstart(ifp);
                    570:        splx(s);
                    571:        ifp->if_timer = is->is_scaninterval;
                    572: }
                    573: 
                    574: /*
                    575:  * Total up the on-board statistics.
                    576:  */
                    577: iltotal(is)
                    578:        register struct il_softc *is;
                    579: {
                    580:        register u_short *interval, *sum, *end;
                    581: 
                    582:        interval = &is->is_stats.ils_frames;
                    583:        sum = &is->is_sum.ils_frames;
                    584:        end = is->is_sum.ils_fill2;
                    585:        while (sum < end)
                    586:                *sum++ += *interval++;
                    587:        is->is_if.if_collisions = is->is_sum.ils_collis;
                    588:        if ((is->is_flags & ILF_SETADDR) &&
                    589:            (bcmp((caddr_t)is->is_stats.ils_addr, (caddr_t)is->is_addr,
                    590:                                        sizeof (is->is_addr)) != 0)) {
                    591:                log(LOG_ERR, "il%d: physaddr reverted\n", is->is_if.if_unit);
                    592:                is->is_flags &= ~ILF_RUNNING;
                    593:                ilinit(is->is_if.if_unit);
                    594:        }
                    595: }
                    596: 
                    597: /*
                    598:  * Process an ioctl request.
                    599:  */
                    600: ilioctl(ifp, cmd, data)
                    601:        register struct ifnet *ifp;
                    602:        int cmd;
                    603:        caddr_t data;
                    604: {
                    605:        register struct ifaddr *ifa = (struct ifaddr *)data;
                    606:        register struct il_softc *is = &il_softc[ifp->if_unit];
                    607:        int s = splimp(), error = 0;
                    608: 
                    609:        switch (cmd) {
                    610: 
                    611:        case SIOCSIFADDR:
                    612:                ifp->if_flags |= IFF_UP;
                    613:                ilinit(ifp->if_unit);
                    614: 
                    615:                switch (ifa->ifa_addr->sa_family) {
                    616: #ifdef INET
                    617:                case AF_INET:
                    618:                        ((struct arpcom *)ifp)->ac_ipaddr =
                    619:                                IA_SIN(ifa)->sin_addr;
                    620:                        arpwhohas((struct arpcom *)ifp, &IA_SIN(ifa)->sin_addr);
                    621:                        break;
                    622: #endif
                    623: #ifdef NS
                    624:                case AF_NS:
                    625:                    {
                    626:                        register struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr);
                    627:                        
                    628:                        if (ns_nullhost(*ina)) {
                    629:                                ina->x_host = * (union ns_host *) 
                    630:                                     (il_softc[ifp->if_unit].is_addr);
                    631:                        } else {
                    632:                                il_setaddr(ina->x_host.c_host, ifp->if_unit);
                    633:                                return (0);
                    634:                        }
                    635:                        break;
                    636:                    }
                    637: #endif
                    638:                }
                    639:                break;
                    640: 
                    641:        case SIOCSIFFLAGS:
                    642:                if ((ifp->if_flags & IFF_UP) == 0 &&
                    643:                    is->is_flags & ILF_RUNNING) {
                    644:                        ((struct ildevice *)
                    645:                           (ilinfo[ifp->if_unit]->ui_addr))->il_csr = ILC_RESET;
                    646:                        is->is_flags &= ~ILF_RUNNING;
                    647:                } else if (ifp->if_flags & IFF_UP &&
                    648:                    (is->is_flags & ILF_RUNNING) == 0)
                    649:                        ilinit(ifp->if_unit);
                    650:                break;
                    651: 
                    652:        default:
                    653:                error = EINVAL;
                    654:        }
                    655:        splx(s);
                    656:        return (error);
                    657: }
                    658: 
                    659: /*
                    660:  * set ethernet address for unit
                    661:  */
                    662: il_setaddr(physaddr, unit)
                    663: u_char *physaddr;
                    664: int unit;
                    665: {
                    666:        register struct il_softc *is = &il_softc[unit];
                    667:        
                    668:        if (! (is->is_flags & ILF_RUNNING))
                    669:                return;
                    670:                
                    671:        bcopy((caddr_t)physaddr, (caddr_t)is->is_addr, sizeof is->is_addr);
                    672:        is->is_flags &= ~ILF_RUNNING;
                    673:        is->is_flags |= ILF_SETADDR;
                    674:        ilinit(unit);
                    675: }
                    676: #endif

unix.superglobalmegacorp.com

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.