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tap: Use numbered tap/tun devices on all *BSD OS's

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The following patch simplifies the *BSD tap/tun code and makes use of numbered
tap/tun interfaces on all *BSD OS's. NetBSD has a patch in their pkgsrc tree
to make use of this feature and DragonFly also supports this as well.

Signed-off-by: Brad Smith <brad@comstyle.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Brad Smith 2013-08-03 22:20:41 -04:00 committed by Stefan Hajnoczi
parent df7131623d
commit aa4f082f75
1 changed files with 0 additions and 11 deletions
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11
net/tap-bsd.c
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@ -44,8 +44,6 @@ int tap_open(char *ifname, int ifname_size, int *vnet_hdr,
struct stat s; struct stat s;
#endif #endif
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \
defined(__OpenBSD__) || defined(__APPLE__)
/* if no ifname is given, always start the search from tap0/tun0. */ /* if no ifname is given, always start the search from tap0/tun0. */
int i; int i;
char dname[100]; char dname[100];
@ -76,15 +74,6 @@ int tap_open(char *ifname, int ifname_size, int *vnet_hdr,
dname, strerror(errno)); dname, strerror(errno));
return -1; return -1;
} }
#else
TFR(fd = open("/dev/tap", O_RDWR));
if (fd < 0) {
fprintf(stderr,
"warning: could not open /dev/tap: no virtual network emulation: %s\n",
strerror(errno));
return -1;
}
#endif
#ifdef TAPGIFNAME #ifdef TAPGIFNAME
if (ioctl(fd, TAPGIFNAME, (void *)&ifr) < 0) { if (ioctl(fd, TAPGIFNAME, (void *)&ifr) < 0) {