diff options
Diffstat (limited to 'qemu/net/tap-bsd.c')
| -rw-r--r-- | qemu/net/tap-bsd.c | 257 |
1 files changed, 0 insertions, 257 deletions
diff --git a/qemu/net/tap-bsd.c b/qemu/net/tap-bsd.c deleted file mode 100644 index c506ac31d..000000000 --- a/qemu/net/tap-bsd.c +++ /dev/null @@ -1,257 +0,0 @@ -/* - * QEMU System Emulator - * - * Copyright (c) 2003-2008 Fabrice Bellard - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -#include "qemu/osdep.h" -#include "qapi/error.h" -#include "tap_int.h" -#include "qemu/cutils.h" -#include "sysemu/sysemu.h" -#include "qemu/error-report.h" - -#if defined(__NetBSD__) || defined(__FreeBSD__) -#include <sys/ioctl.h> -#include <net/if.h> -#include <net/if_tap.h> -#endif - -#ifndef __FreeBSD__ -int tap_open(char *ifname, int ifname_size, int *vnet_hdr, - int vnet_hdr_required, int mq_required, Error **errp) -{ - int fd; -#ifdef TAPGIFNAME - struct ifreq ifr; -#else - char *dev; - struct stat s; -#endif - - /* if no ifname is given, always start the search from tap0/tun0. */ - int i; - char dname[100]; - - for (i = 0; i < 10; i++) { - if (*ifname) { - snprintf(dname, sizeof dname, "/dev/%s", ifname); - } else { -#if defined(__OpenBSD__) - snprintf(dname, sizeof dname, "/dev/tun%d", i); -#else - snprintf(dname, sizeof dname, "/dev/tap%d", i); -#endif - } - TFR(fd = open(dname, O_RDWR)); - if (fd >= 0) { - break; - } - else if (errno == ENXIO || errno == ENOENT) { - break; - } - if (*ifname) { - break; - } - } - if (fd < 0) { - error_setg_errno(errp, errno, "could not open %s", dname); - return -1; - } - -#ifdef TAPGIFNAME - if (ioctl(fd, TAPGIFNAME, (void *)&ifr) < 0) { - error_setg_errno(errp, errno, "could not get tap name"); - return -1; - } - pstrcpy(ifname, ifname_size, ifr.ifr_name); -#else - if (fstat(fd, &s) < 0) { - error_setg_errno(errp, errno, "could not stat %s", dname); - return -1; - } - dev = devname(s.st_rdev, S_IFCHR); - pstrcpy(ifname, ifname_size, dev); -#endif - - if (*vnet_hdr) { - /* BSD doesn't have IFF_VNET_HDR */ - *vnet_hdr = 0; - - if (vnet_hdr_required && !*vnet_hdr) { - error_setg(errp, "vnet_hdr=1 requested, but no kernel " - "support for IFF_VNET_HDR available"); - close(fd); - return -1; - } - } - fcntl(fd, F_SETFL, O_NONBLOCK); - return fd; -} - -#else /* __FreeBSD__ */ - -#define PATH_NET_TAP "/dev/tap" - -static int tap_open_clone(char *ifname, int ifname_size, Error **errp) -{ - int fd, s, ret; - struct ifreq ifr; - - TFR(fd = open(PATH_NET_TAP, O_RDWR)); - if (fd < 0) { - error_setg_errno(errp, errno, "could not open %s", PATH_NET_TAP); - return -1; - } - - memset(&ifr, 0, sizeof(ifr)); - - ret = ioctl(fd, TAPGIFNAME, (void *)&ifr); - if (ret < 0) { - error_setg_errno(errp, errno, "could not get tap interface name"); - close(fd); - return -1; - } - - if (ifname[0] != '\0') { - /* User requested the interface to have a specific name */ - s = socket(AF_LOCAL, SOCK_DGRAM, 0); - if (s < 0) { - error_setg_errno(errp, errno, - "could not open socket to set interface name"); - close(fd); - return -1; - } - ifr.ifr_data = ifname; - ret = ioctl(s, SIOCSIFNAME, (void *)&ifr); - close(s); - if (ret < 0) { - error_setg(errp, "could not set tap interface name"); - close(fd); - return -1; - } - } else { - pstrcpy(ifname, ifname_size, ifr.ifr_name); - } - - return fd; -} - -int tap_open(char *ifname, int ifname_size, int *vnet_hdr, - int vnet_hdr_required, int mq_required, Error **errp) -{ - int fd = -1; - - /* If the specified tap device already exists just use it. */ - if (ifname[0] != '\0') { - char dname[100]; - snprintf(dname, sizeof dname, "/dev/%s", ifname); - TFR(fd = open(dname, O_RDWR)); - if (fd < 0 && errno != ENOENT) { - error_setg_errno(errp, errno, "could not open %s", dname); - return -1; - } - } - - if (fd < 0) { - /* Tap device not specified or does not exist. */ - if ((fd = tap_open_clone(ifname, ifname_size, errp)) < 0) { - return -1; - } - } - - if (*vnet_hdr) { - /* BSD doesn't have IFF_VNET_HDR */ - *vnet_hdr = 0; - - if (vnet_hdr_required && !*vnet_hdr) { - error_setg(errp, "vnet_hdr=1 requested, but no kernel " - "support for IFF_VNET_HDR available"); - goto error; - } - } - if (mq_required) { - error_setg(errp, "mq_required requested, but no kernel support" - " for IFF_MULTI_QUEUE available"); - goto error; - } - - fcntl(fd, F_SETFL, O_NONBLOCK); - return fd; - -error: - close(fd); - return -1; -} -#endif /* __FreeBSD__ */ - -void tap_set_sndbuf(int fd, const NetdevTapOptions *tap, Error **errp) -{ -} - -int tap_probe_vnet_hdr(int fd) -{ - return 0; -} - -int tap_probe_has_ufo(int fd) -{ - return 0; -} - -int tap_probe_vnet_hdr_len(int fd, int len) -{ - return 0; -} - -void tap_fd_set_vnet_hdr_len(int fd, int len) -{ -} - -int tap_fd_set_vnet_le(int fd, int is_le) -{ - return -EINVAL; -} - -int tap_fd_set_vnet_be(int fd, int is_be) -{ - return -EINVAL; -} - -void tap_fd_set_offload(int fd, int csum, int tso4, - int tso6, int ecn, int ufo) -{ -} - -int tap_fd_enable(int fd) -{ - return -1; -} - -int tap_fd_disable(int fd) -{ - return -1; -} - -int tap_fd_get_ifname(int fd, char *ifname) -{ - return -1; -} |