1: /* 2: * Copyright (c) 1982, 1986 Regents of the University of California. 3: * All rights reserved. The Berkeley software License Agreement 4: * specifies the terms and conditions for redistribution. 5: * 6: * @(#)if_il.c 7.1 (Berkeley) 6/5/86 7: */ 8: 9: #include "il.h" 10: #include "enetfilter.h" 11: #if NIL > 0 12: 13: /* 14: * Interlan Ethernet Communications Controller interface 15: */ 16: #include "../machine/pte.h" 17: 18: #include "param.h" 19: #include "systm.h" 20: #include "mbuf.h" 21: #include "buf.h" 22: #include "protosw.h" 23: #include "socket.h" 24: #include "vmmac.h" 25: #include "ioctl.h" 26: #include "errno.h" 27: 28: #include "../net/if.h" 29: #include "../net/netisr.h" 30: #include "../net/route.h" 31: 32: #ifdef INET 33: #include "../netinet/in.h" 34: #include "../netinet/in_systm.h" 35: #include "../netinet/in_var.h" 36: #include "../netinet/ip.h" 37: #include "../netinet/if_ether.h" 38: #endif 39: 40: #ifdef NS 41: #include "../netns/ns.h" 42: #include "../netns/ns_if.h" 43: #endif 44: 45: #include "../vax/cpu.h" 46: #include "../vax/mtpr.h" 47: #include "if_il.h" 48: #include "if_ilreg.h" 49: #include "if_uba.h" 50: #if NENETFILTER > 0 51: #include "../net/enet.h" 52: #endif NENETFILTER > 0 53: #include "../vaxuba/ubareg.h" 54: #include "../vaxuba/ubavar.h" 55: 56: int ilprobe(), ilattach(), ilrint(), ilcint(); 57: struct uba_device *ilinfo[NIL]; 58: u_short ilstd[] = { 0 }; 59: struct uba_driver ildriver = 60: { ilprobe, 0, ilattach, 0, ilstd, "il", ilinfo }; 61: #define ILUNIT(x) minor(x) 62: int ilinit(),iloutput(),ilioctl(),ilreset(),ilwatch(); 63: int ildebug = 0; 64: 65: /* 66: * Ethernet software status per interface. 67: * 68: * Each interface is referenced by a network interface structure, 69: * is_if, which the routing code uses to locate the interface. 70: * This structure contains the output queue for the interface, its address, ... 71: * We also have, for each interface, a UBA interface structure, which 72: * contains information about the UNIBUS resources held by the interface: 73: * map registers, buffered data paths, etc. Information is cached in this 74: * structure for use by the if_uba.c routines in running the interface 75: * efficiently. 76: */ 77: struct il_softc { 78: struct arpcom is_ac; /* Ethernet common part */ 79: #define is_if is_ac.ac_if /* network-visible interface */ 80: #define is_addr is_ac.ac_enaddr /* hardware Ethernet address */ 81: struct ifuba is_ifuba; /* UNIBUS resources */ 82: int is_flags; 83: #define ILF_OACTIVE 0x1 /* output is active */ 84: #define ILF_RCVPENDING 0x2 /* start rcv in ilcint */ 85: #define ILF_STATPENDING 0x4 /* stat cmd pending */ 86: #define ILF_RUNNING 0x8 /* board is running */ 87: #define ILF_SETADDR 0x10 /* physical address is changed */ 88: short is_lastcmd; /* can't read csr, so must save it */ 89: short is_scaninterval; /* interval of stat collection */ 90: #define ILWATCHINTERVAL 60 /* once every 60 seconds */ 91: struct il_stats is_stats; /* holds on-board statistics */ 92: struct il_stats is_sum; /* summation over time */ 93: int is_ubaddr; /* mapping registers of is_stats */ 94: #if NENETFILTER > 0 95: short is_enetunit; /* unit number for enet filtering */ 96: #endif NENETFILTER 97: } il_softc[NIL]; 98: 99: ilprobe(reg) 100: caddr_t reg; 101: { 102: register int br, cvec; /* r11, r10 value-result */ 103: register struct ildevice *addr = (struct ildevice *)reg; 104: register i; 105: 106: #ifdef lint 107: br = 0; cvec = br; br = cvec; 108: i = 0; ilrint(i); ilcint(i); ilwatch(i); 109: #endif 110: 111: addr->il_csr = ILC_OFFLINE|IL_CIE; 112: DELAY(100000); 113: i = addr->il_csr; /* clear CDONE */ 114: if (cvec > 0 && cvec != 0x200) 115: cvec -= 4; 116: return (1); 117: } 118: 119: /* 120: * Interface exists: make available by filling in network interface 121: * record. System will initialize the interface when it is ready 122: * to accept packets. A STATUS command is done to get the ethernet 123: * address and other interesting data. 124: */ 125: ilattach(ui) 126: struct uba_device *ui; 127: { 128: register struct il_softc *is = &il_softc[ui->ui_unit]; 129: register struct ifnet *ifp = &is->is_if; 130: register struct ildevice *addr = (struct ildevice *)ui->ui_addr; 131: 132: ifp->if_unit = ui->ui_unit; 133: ifp->if_name = "il"; 134: ifp->if_mtu = ETHERMTU; 135: ifp->if_flags = IFF_BROADCAST; 136: 137: /* 138: * Reset the board and map the statistics 139: * buffer onto the Unibus. 140: */ 141: addr->il_csr = ILC_RESET; 142: (void)ilwait(ui, "reset"); 143: 144: is->is_ubaddr = uballoc(ui->ui_ubanum, (caddr_t)&is->is_stats, 145: sizeof (struct il_stats), 0); 146: addr->il_bar = is->is_ubaddr & 0xffff; 147: addr->il_bcr = sizeof (struct il_stats); 148: addr->il_csr = ((is->is_ubaddr >> 2) & IL_EUA)|ILC_STAT; 149: (void)ilwait(ui, "status"); 150: ubarelse(ui->ui_ubanum, &is->is_ubaddr); 151: if (ildebug) 152: printf("il%d: module=%s firmware=%s\n", ui->ui_unit, 153: is->is_stats.ils_module, is->is_stats.ils_firmware); 154: bcopy((caddr_t)is->is_stats.ils_addr, (caddr_t)is->is_addr, 155: sizeof (is->is_addr)); 156: printf("il%d: hardware address %s\n", ui->ui_unit, 157: ether_sprintf(is->is_addr)); 158: ifp->if_init = ilinit; 159: ifp->if_output = iloutput; 160: ifp->if_ioctl = ilioctl; 161: ifp->if_reset = ilreset; 162: is->is_ifuba.ifu_flags = UBA_CANTWAIT; 163: #if NENETFILTER > 0 164: { 165: struct endevp enp; 166: 167: enp.end_dev_type = ENDT_10MB; 168: enp.end_addr_len = sizeof(is->is_addr); 169: enp.end_hdr_len = sizeof(struct ether_header); 170: enp.end_MTU = ETHERMTU; 171: bcopy((caddr_t)is->is_addr, 172: (caddr_t)(enp.end_addr), sizeof(is->is_addr)); 173: bcopy((caddr_t)etherbroadcastaddr, 174: (caddr_t)(enp.end_broadaddr), sizeof(is->is_addr)); 175: 176: is->is_enetunit = enetattach(&is->is_if, &enp); 177: } 178: #endif NENETFILTER > 0 179: if_attach(ifp); 180: } 181: 182: ilwait(ui, op) 183: struct uba_device *ui; 184: char *op; 185: { 186: register struct ildevice *addr = (struct ildevice *)ui->ui_addr; 187: 188: while ((addr->il_csr&IL_CDONE) == 0) 189: ; 190: if (addr->il_csr&IL_STATUS) { 191: printf("il%d: %s failed, csr=%b\n", ui->ui_unit, op, 192: addr->il_csr, IL_BITS); 193: return (-1); 194: } 195: return (0); 196: } 197: 198: /* 199: * Reset of interface after UNIBUS reset. 200: * If interface is on specified uba, reset its state. 201: */ 202: ilreset(unit, uban) 203: int unit, uban; 204: { 205: register struct uba_device *ui; 206: 207: if (unit >= NIL || (ui = ilinfo[unit]) == 0 || ui->ui_alive == 0 || 208: ui->ui_ubanum != uban) 209: return; 210: printf(" il%d", unit); 211: il_softc[unit].is_if.if_flags &= ~IFF_RUNNING; 212: il_softc[unit].is_flags &= ~ILF_RUNNING; 213: ilinit(unit); 214: } 215: 216: /* 217: * Initialization of interface; clear recorded pending 218: * operations, and reinitialize UNIBUS usage. 219: */ 220: ilinit(unit) 221: int unit; 222: { 223: register struct il_softc *is = &il_softc[unit]; 224: register struct uba_device *ui = ilinfo[unit]; 225: register struct ildevice *addr; 226: register struct ifnet *ifp = &is->is_if; 227: int s; 228: 229: /* not yet, if address still unknown */ 230: if (ifp->if_addrlist == (struct ifaddr *)0) 231: return; 232: if (is->is_flags & ILF_RUNNING) 233: return; 234: 235: if ((ifp->if_flags & IFF_RUNNING) == 0) { 236: if (if_ubainit(&is->is_ifuba, ui->ui_ubanum, 237: sizeof (struct il_rheader), (int)btoc(ETHERMTU)) == 0) { 238: printf("il%d: can't initialize\n", unit); 239: is->is_if.if_flags &= ~IFF_UP; 240: return; 241: } 242: is->is_ubaddr = uballoc(ui->ui_ubanum, (caddr_t)&is->is_stats, 243: sizeof (struct il_stats), 0); 244: } 245: ifp->if_watchdog = ilwatch; 246: is->is_scaninterval = ILWATCHINTERVAL; 247: ifp->if_timer = is->is_scaninterval; 248: addr = (struct ildevice *)ui->ui_addr; 249: 250: /* 251: * Turn off source address insertion (it's faster this way), 252: * and set board online. Former doesn't work if board is 253: * already online (happens on ubareset), so we put it offline 254: * first. 255: */ 256: s = splimp(); 257: addr->il_csr = ILC_RESET; 258: if (ilwait(ui, "hardware diag")) { 259: is->is_if.if_flags &= ~IFF_UP; 260: splx(s); 261: return; 262: } 263: addr->il_csr = ILC_CISA; 264: while ((addr->il_csr & IL_CDONE) == 0) 265: ; 266: /* 267: * If we must reprogram this board's physical ethernet 268: * address (as for secondary XNS interfaces), we do so 269: * before putting it on line, and starting receive requests. 270: * If you try this on an older 1010 board, it will total 271: * wedge the board. 272: */ 273: if (is->is_flags & ILF_SETADDR) { 274: bcopy((caddr_t)is->is_addr, (caddr_t)&is->is_stats, 275: sizeof is->is_addr); 276: addr->il_bar = is->is_ubaddr & 0xffff; 277: addr->il_bcr = sizeof is->is_addr; 278: addr->il_csr = ((is->is_ubaddr >> 2) & IL_EUA)|ILC_LDPA; 279: if (ilwait(ui, "setaddr")) 280: return; 281: addr->il_bar = is->is_ubaddr & 0xffff; 282: addr->il_bcr = sizeof (struct il_stats); 283: addr->il_csr = ((is->is_ubaddr >> 2) & IL_EUA)|ILC_STAT; 284: if (ilwait(ui, "verifying setaddr")) 285: return; 286: if (bcmp((caddr_t)is->is_stats.ils_addr, (caddr_t)is->is_addr, 287: sizeof (is->is_addr)) != 0) { 288: printf("il%d: setaddr didn't work\n", ui->ui_unit); 289: return; 290: } 291: } 292: /* 293: * Set board online. 294: * Hang receive buffer and start any pending 295: * writes by faking a transmit complete. 296: * Receive bcr is not a multiple of 8 so buffer 297: * chaining can't happen. 298: */ 299: addr->il_csr = ILC_ONLINE; 300: while ((addr->il_csr & IL_CDONE) == 0) 301: ; 302: addr->il_bar = is->is_ifuba.ifu_r.ifrw_info & 0xffff; 303: addr->il_bcr = sizeof(struct il_rheader) + ETHERMTU + 6; 304: addr->il_csr = 305: ((is->is_ifuba.ifu_r.ifrw_info >> 2) & IL_EUA)|ILC_RCV|IL_RIE; 306: while ((addr->il_csr & IL_CDONE) == 0) 307: ; 308: is->is_flags = ILF_OACTIVE; 309: is->is_if.if_flags |= IFF_RUNNING; 310: is->is_flags |= ILF_RUNNING; 311: is->is_lastcmd = 0; 312: ilcint(unit); 313: splx(s); 314: } 315: 316: /* 317: * Start output on interface. 318: * Get another datagram to send off of the interface queue, 319: * and map it to the interface before starting the output. 320: */ 321: ilstart(dev) 322: dev_t dev; 323: { 324: int unit = ILUNIT(dev), len; 325: struct uba_device *ui = ilinfo[unit]; 326: register struct il_softc *is = &il_softc[unit]; 327: register struct ildevice *addr; 328: struct mbuf *m; 329: short csr; 330: 331: IF_DEQUEUE(&is->is_if.if_snd, m); 332: addr = (struct ildevice *)ui->ui_addr; 333: if (m == 0) { 334: if ((is->is_flags & ILF_STATPENDING) == 0) 335: return; 336: addr->il_bar = is->is_ubaddr & 0xffff; 337: addr->il_bcr = sizeof (struct il_stats); 338: csr = ((is->is_ubaddr >> 2) & IL_EUA)|ILC_STAT|IL_RIE|IL_CIE; 339: is->is_flags &= ~ILF_STATPENDING; 340: goto startcmd; 341: } 342: len = if_wubaput(&is->is_ifuba, m); 343: /* 344: * Ensure minimum packet length. 345: * This makes the safe assumtion that there are no virtual holes 346: * after the data. 347: * For security, it might be wise to zero out the added bytes, 348: * but we're mainly interested in speed at the moment. 349: */ 350: if (len - sizeof(struct ether_header) < ETHERMIN) 351: len = ETHERMIN + sizeof(struct ether_header); 352: if (is->is_ifuba.ifu_flags & UBA_NEEDBDP) 353: UBAPURGE(is->is_ifuba.ifu_uba, is->is_ifuba.ifu_w.ifrw_bdp); 354: addr->il_bar = is->is_ifuba.ifu_w.ifrw_info & 0xffff; 355: addr->il_bcr = len; 356: csr = 357: ((is->is_ifuba.ifu_w.ifrw_info >> 2) & IL_EUA)|ILC_XMIT|IL_CIE|IL_RIE; 358: 359: startcmd: 360: is->is_lastcmd = csr & IL_CMD; 361: addr->il_csr = csr; 362: is->is_flags |= ILF_OACTIVE; 363: } 364: 365: /* 366: * Command done interrupt. 367: */ 368: ilcint(unit) 369: int unit; 370: { 371: register struct il_softc *is = &il_softc[unit]; 372: struct uba_device *ui = ilinfo[unit]; 373: register struct ildevice *addr = (struct ildevice *)ui->ui_addr; 374: short csr; 375: 376: if ((is->is_flags & ILF_OACTIVE) == 0) { 377: printf("il%d: stray xmit interrupt, csr=%b\n", unit, 378: addr->il_csr, IL_BITS); 379: return; 380: } 381: 382: csr = addr->il_csr; 383: /* 384: * Hang receive buffer if it couldn't 385: * be done earlier (in ilrint). 386: */ 387: if (is->is_flags & ILF_RCVPENDING) { 388: int s; 389: 390: addr->il_bar = is->is_ifuba.ifu_r.ifrw_info & 0xffff; 391: addr->il_bcr = sizeof(struct il_rheader) + ETHERMTU + 6; 392: addr->il_csr = 393: ((is->is_ifuba.ifu_r.ifrw_info >> 2) & IL_EUA)|ILC_RCV|IL_RIE; 394: s = splhigh(); 395: while ((addr->il_csr & IL_CDONE) == 0) 396: ; 397: splx(s); 398: is->is_flags &= ~ILF_RCVPENDING; 399: } 400: is->is_flags &= ~ILF_OACTIVE; 401: csr &= IL_STATUS; 402: switch (is->is_lastcmd) { 403: 404: case ILC_XMIT: 405: is->is_if.if_opackets++; 406: if (csr > ILERR_RETRIES) 407: is->is_if.if_oerrors++; 408: break; 409: 410: case ILC_STAT: 411: if (csr == ILERR_SUCCESS) 412: iltotal(is); 413: break; 414: } 415: if (is->is_ifuba.ifu_xtofree) { 416: m_freem(is->is_ifuba.ifu_xtofree); 417: is->is_ifuba.ifu_xtofree = 0; 418: } 419: ilstart(unit); 420: } 421: 422: /* 423: * Ethernet interface receiver interrupt. 424: * If input error just drop packet. 425: * Otherwise purge input buffered data path and examine 426: * packet to determine type. If can't determine length 427: * from type, then have to drop packet. Othewise decapsulate 428: * packet based on type and pass to type specific higher-level 429: * input routine. 430: */ 431: ilrint(unit) 432: int unit; 433: { 434: register struct il_softc *is = &il_softc[unit]; 435: struct ildevice *addr = (struct ildevice *)ilinfo[unit]->ui_addr; 436: register struct il_rheader *il; 437: struct mbuf *m; 438: int len, off, resid, s; 439: register struct ifqueue *inq; 440: 441: is->is_if.if_ipackets++; 442: if (is->is_ifuba.ifu_flags & UBA_NEEDBDP) 443: UBAPURGE(is->is_ifuba.ifu_uba, is->is_ifuba.ifu_r.ifrw_bdp); 444: il = (struct il_rheader *)(is->is_ifuba.ifu_r.ifrw_addr); 445: len = il->ilr_length - sizeof(struct il_rheader); 446: if ((il->ilr_status&(ILFSTAT_A|ILFSTAT_C)) || len < 46 || 447: len > ETHERMTU) { 448: is->is_if.if_ierrors++; 449: #ifdef notdef 450: if (is->is_if.if_ierrors % 100 == 0) 451: printf("il%d: += 100 input errors\n", unit); 452: #endif 453: goto setup; 454: } 455: 456: /* 457: * Deal with trailer protocol: if type is trailer type 458: * get true type from first 16-bit word past data. 459: * Remember that type was trailer by setting off. 460: */ 461: il->ilr_type = ntohs((u_short)il->ilr_type); 462: #define ildataaddr(il, off, type) ((type)(((caddr_t)((il)+1)+(off)))) 463: if (il->ilr_type >= ETHERTYPE_TRAIL && 464: il->ilr_type < ETHERTYPE_TRAIL+ETHERTYPE_NTRAILER) { 465: off = (il->ilr_type - ETHERTYPE_TRAIL) * 512; 466: if (off >= ETHERMTU) 467: goto setup; /* sanity */ 468: il->ilr_type = ntohs(*ildataaddr(il, off, u_short *)); 469: resid = ntohs(*(ildataaddr(il, off+2, u_short *))); 470: if (off + resid > len) 471: goto setup; /* sanity */ 472: len = off + resid; 473: } else 474: off = 0; 475: if (len == 0) 476: goto setup; 477: 478: /* 479: * Pull packet off interface. Off is nonzero if packet 480: * has trailing header; ilget will then force this header 481: * information to be at the front, but we still have to drop 482: * the type and length which are at the front of any trailer data. 483: */ 484: m = if_rubaget(&is->is_ifuba, len, off, &is->is_if); 485: if (m == 0) 486: goto setup; 487: if (off) { 488: struct ifnet *ifp; 489: 490: ifp = *(mtod(m, struct ifnet **)); 491: m->m_off += 2 * sizeof (u_short); 492: m->m_len -= 2 * sizeof (u_short); 493: *(mtod(m, struct ifnet **)) = ifp; 494: } 495: switch (il->ilr_type) { 496: 497: #ifdef INET 498: case ETHERTYPE_IP: 499: schednetisr(NETISR_IP); 500: inq = &ipintrq; 501: break; 502: 503: case ETHERTYPE_ARP: 504: arpinput(&is->is_ac, m); 505: goto setup; 506: #endif 507: #ifdef NS 508: case ETHERTYPE_NS: 509: schednetisr(NETISR_NS); 510: inq = &nsintrq; 511: break; 512: 513: #endif 514: #if NENETFILTER > 0 515: default: 516: { 517: register struct mbuf *mtop; 518: /* 519: * We need the local net header after all. Oh well, 520: * this could be improved. 521: */ 522: MGET(mtop, M_DONTWAIT, MT_DATA); 523: if (mtop == 0) { /* no more mbufs? */ 524: m_freem(m); /* wasted effort */ 525: goto setup; 526: } 527: il->ilr_type = htons((u_short)il->ilr_type); 528: /* undo the swap done earlier */ 529: 530: /* 531: * the struct il_rheader pointed to by "il" 532: * contains the received ether header, but 533: * the definitions should be more obvious. 534: */ 535: bcopy(il->ilr_dhost, mtod(mtop, struct ether_header *), 536: sizeof(struct ether_header)); 537: mtop->m_len = sizeof(struct ether_header); 538: IF_ADJ(m); 539: mtop->m_next = m; 540: enetFilter(is->is_enetunit, mtop, 541: (len + sizeof(struct ether_header)) ); 542: goto setup; 543: } 544: #else 545: default: 546: m_freem(m); 547: goto setup; 548: #endif NENETFILTER > 0 549: } 550: 551: s = splimp(); 552: if (IF_QFULL(inq)) { 553: IF_DROP(inq); 554: m_freem(m); 555: } else 556: IF_ENQUEUE(inq, m); 557: splx(s); 558: 559: setup: 560: /* 561: * Reset for next packet if possible. 562: * If waiting for transmit command completion, set flag 563: * and wait until command completes. 564: */ 565: if (is->is_flags & ILF_OACTIVE) { 566: is->is_flags |= ILF_RCVPENDING; 567: return; 568: } 569: addr->il_bar = is->is_ifuba.ifu_r.ifrw_info & 0xffff; 570: addr->il_bcr = sizeof(struct il_rheader) + ETHERMTU + 6; 571: addr->il_csr = 572: ((is->is_ifuba.ifu_r.ifrw_info >> 2) & IL_EUA)|ILC_RCV|IL_RIE; 573: s = splhigh(); 574: while ((addr->il_csr & IL_CDONE) == 0) 575: ; 576: splx(s); 577: } 578: 579: /* 580: * Ethernet output routine. 581: * Encapsulate a packet of type family for the local net. 582: * Use trailer local net encapsulation if enough data in first 583: * packet leaves a multiple of 512 bytes of data in remainder. 584: */ 585: iloutput(ifp, m0, dst) 586: struct ifnet *ifp; 587: struct mbuf *m0; 588: struct sockaddr *dst; 589: { 590: int type, s, error; 591: u_char edst[6]; 592: struct in_addr idst; 593: register struct il_softc *is = &il_softc[ifp->if_unit]; 594: register struct mbuf *m = m0; 595: register struct ether_header *il; 596: register int off; 597: int usetrailers; 598: 599: if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) { 600: error = ENETDOWN; 601: goto bad; 602: } 603: switch (dst->sa_family) { 604: 605: #ifdef INET 606: case AF_INET: 607: idst = ((struct sockaddr_in *)dst)->sin_addr; 608: if (!arpresolve(&is->is_ac, m, &idst, edst, &usetrailers)) 609: return (0); /* if not yet resolved */ 610: off = ntohs((u_short)mtod(m, struct ip *)->ip_len) - m->m_len; 611: if (usetrailers && off > 0 && (off & 0x1ff) == 0 && 612: m->m_off >= MMINOFF + 2 * sizeof (u_short)) { 613: type = ETHERTYPE_TRAIL + (off>>9); 614: m->m_off -= 2 * sizeof (u_short); 615: m->m_len += 2 * sizeof (u_short); 616: *mtod(m, u_short *) = htons((u_short)ETHERTYPE_IP); 617: *(mtod(m, u_short *) + 1) = htons((u_short)m->m_len); 618: goto gottrailertype; 619: } 620: type = ETHERTYPE_IP; 621: off = 0; 622: goto gottype; 623: #endif 624: #ifdef NS 625: case AF_NS: 626: type = ETHERTYPE_NS; 627: bcopy((caddr_t)&(((struct sockaddr_ns *)dst)->sns_addr.x_host), 628: (caddr_t)edst, sizeof (edst)); 629: off = 0; 630: goto gottype; 631: #endif 632: #if NENETFILTER > 0 633: case AF_IMPLINK: 634: il = mtod(m, struct ether_header *); 635: goto gotheader; 636: #endif NENETFILTER 637: 638: case AF_UNSPEC: 639: il = (struct ether_header *)dst->sa_data; 640: bcopy((caddr_t)il->ether_dhost, (caddr_t)edst, sizeof (edst)); 641: type = il->ether_type; 642: goto gottype; 643: 644: default: 645: printf("il%d: can't handle af%d\n", ifp->if_unit, 646: dst->sa_family); 647: error = EAFNOSUPPORT; 648: goto bad; 649: } 650: 651: gottrailertype: 652: /* 653: * Packet to be sent as trailer: move first packet 654: * (control information) to end of chain. 655: */ 656: while (m->m_next) 657: m = m->m_next; 658: m->m_next = m0; 659: m = m0->m_next; 660: m0->m_next = 0; 661: m0 = m; 662: 663: gottype: 664: /* 665: * Add local net header. If no space in first mbuf, 666: * allocate another. 667: */ 668: if (m->m_off > MMAXOFF || 669: MMINOFF + sizeof (struct ether_header) > m->m_off) { 670: m = m_get(M_DONTWAIT, MT_HEADER); 671: if (m == 0) { 672: error = ENOBUFS; 673: goto bad; 674: } 675: m->m_next = m0; 676: m->m_off = MMINOFF; 677: m->m_len = sizeof (struct ether_header); 678: } else { 679: m->m_off -= sizeof (struct ether_header); 680: m->m_len += sizeof (struct ether_header); 681: } 682: il = mtod(m, struct ether_header *); 683: il->ether_type = htons((u_short)type); 684: bcopy((caddr_t)edst, (caddr_t)il->ether_dhost, sizeof (edst)); 685: #if NENETFILTER > 0 686: gotheader: 687: #endif NENETFILTER 688: bcopy((caddr_t)is->is_addr, (caddr_t)il->ether_shost, 689: sizeof(il->ether_shost)); 690: 691: /* 692: * Queue message on interface, and start output if interface 693: * not yet active. 694: */ 695: s = splimp(); 696: if (IF_QFULL(&ifp->if_snd)) { 697: IF_DROP(&ifp->if_snd); 698: splx(s); 699: m_freem(m); 700: return (ENOBUFS); 701: } 702: IF_ENQUEUE(&ifp->if_snd, m); 703: if ((is->is_flags & ILF_OACTIVE) == 0) 704: ilstart(ifp->if_unit); 705: splx(s); 706: return (0); 707: 708: bad: 709: m_freem(m0); 710: return (error); 711: } 712: 713: /* 714: * Watchdog routine, request statistics from board. 715: */ 716: ilwatch(unit) 717: int unit; 718: { 719: register struct il_softc *is = &il_softc[unit]; 720: register struct ifnet *ifp = &is->is_if; 721: int s; 722: 723: if (is->is_flags & ILF_STATPENDING) { 724: ifp->if_timer = is->is_scaninterval; 725: return; 726: } 727: s = splimp(); 728: is->is_flags |= ILF_STATPENDING; 729: if ((is->is_flags & ILF_OACTIVE) == 0) 730: ilstart(ifp->if_unit); 731: splx(s); 732: ifp->if_timer = is->is_scaninterval; 733: } 734: 735: /* 736: * Total up the on-board statistics. 737: */ 738: iltotal(is) 739: register struct il_softc *is; 740: { 741: register u_short *interval, *sum, *end; 742: 743: interval = &is->is_stats.ils_frames; 744: sum = &is->is_sum.ils_frames; 745: end = is->is_sum.ils_fill2; 746: while (sum < end) 747: *sum++ += *interval++; 748: is->is_if.if_collisions = is->is_sum.ils_collis; 749: } 750: 751: /* 752: * Process an ioctl request. 753: */ 754: ilioctl(ifp, cmd, data) 755: register struct ifnet *ifp; 756: int cmd; 757: caddr_t data; 758: { 759: register struct ifaddr *ifa = (struct ifaddr *)data; 760: register struct il_softc *is = &il_softc[ifp->if_unit]; 761: int s = splimp(), error = 0; 762: 763: switch (cmd) { 764: 765: case SIOCSIFADDR: 766: ifp->if_flags |= IFF_UP; 767: ilinit(ifp->if_unit); 768: 769: switch (ifa->ifa_addr.sa_family) { 770: #ifdef INET 771: case AF_INET: 772: ((struct arpcom *)ifp)->ac_ipaddr = 773: IA_SIN(ifa)->sin_addr; 774: arpwhohas((struct arpcom *)ifp, &IA_SIN(ifa)->sin_addr); 775: break; 776: #endif 777: #ifdef NS 778: case AF_NS: 779: { 780: register struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr); 781: 782: if (ns_nullhost(*ina)) { 783: ina->x_host = * (union ns_host *) 784: (il_softc[ifp->if_unit].is_addr); 785: } else { 786: il_setaddr(ina->x_host.c_host, ifp->if_unit); 787: return (0); 788: } 789: break; 790: } 791: #endif 792: } 793: break; 794: 795: case SIOCSIFFLAGS: 796: if ((ifp->if_flags & IFF_UP) == 0 && 797: is->is_flags & ILF_RUNNING) { 798: ((struct ildevice *) 799: (ilinfo[ifp->if_unit]->ui_addr))->il_csr = ILC_RESET; 800: is->is_flags &= ~ILF_RUNNING; 801: } else if (ifp->if_flags & IFF_UP && 802: (is->is_flags & ILF_RUNNING) == 0) 803: ilinit(ifp->if_unit); 804: break; 805: 806: default: 807: error = EINVAL; 808: } 809: splx(s); 810: return (error); 811: } 812: 813: /* 814: * set ethernet address for unit 815: */ 816: il_setaddr(physaddr, unit) 817: u_char *physaddr; 818: int unit; 819: { 820: register struct il_softc *is = &il_softc[unit]; 821: 822: if (! (is->is_flags & ILF_RUNNING)) 823: return; 824: 825: bcopy((caddr_t)physaddr, (caddr_t)is->is_addr, sizeof is->is_addr); 826: is->is_flags &= ~ILF_RUNNING; 827: is->is_flags |= ILF_SETADDR; 828: ilinit(unit); 829: } 830: #endif
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