1/*
2 * Copyright (c) 2003-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;

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401 return write(socket, data, len) == len;
402}
403
404
405#if USE_TUNTAP
406
407EtherTap::EtherTap(const Params *p) : EtherTapBase(p)
408{
409 int fd = open(p->tun_clone_device.c_str(), O_RDWR);
410 if (fd < 0)
411 panic("Couldn't open %s.\n", p->tun_clone_device);
412
413 struct ifreq ifr;
414 memset(&ifr, 0, sizeof(ifr));
415 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
416 strncpy(ifr.ifr_name, p->tap_device_name.c_str(), IFNAMSIZ - 1);
417

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433EtherTap::recvReal(int revent)
434{
435 if (revent & POLLERR)
436 panic("Error polling for tap data.\n");
437
438 if (!(revent & POLLIN))
439 return;
440
441 ssize_t ret = read(tap, buffer, buflen);
442 if (ret < 0)
443 panic("Failed to read from tap device.\n");
444
445 sendSimulated(buffer, ret);
446}
447
448bool
449EtherTap::sendReal(const void *data, size_t len)
450{
451 if (write(tap, data, len) != len)
452 panic("Failed to write data to tap device.\n");
453 return true;
454}
455
456EtherTap *
457EtherTapParams::create()
458{
459 return new EtherTap(this);
460}
461
462#endif
463
464EtherTapStub *
465EtherTapStubParams::create()
466{
467 return new EtherTapStub(this);
468}