david.venhoff/QEMU-Nyx-fork
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Fix network interface tap backend

Browse Source 
Fix network interface tap backend work on NetBSD.
It uses an ioctl to get the tap name.

Signed-off-by: Christoph Egger<Christoph.Egger@amd.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Manuel Bouyer 2011-08-07 09:48:59 +00:00 committed by Blue Swirl
parent c7c37b5d70
commit 45c245bf80
1 changed files with 24 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
net/tap-bsd.c
View File

@ -28,6 +28,8 @@
#include "qemu-error.h"
#ifdef __NetBSD__
#include <sys/ioctl.h>
#include <net/if.h>
#include <net/if_tap.h>
#endif
@ -40,8 +42,12 @@
int tap_open(char *ifname, int ifname_size, int *vnet_hdr, int vnet_hdr_required)
{
int fd;
#ifdef TAPGIFNAME
struct ifreq ifr;
#else
char *dev;
struct stat s;
#endif
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__OpenBSD__)
/* if no ifname is given, always start the search from tap0/tun0. */
@ -77,14 +83,30 @@ int tap_open(char *ifname, int ifname_size, int *vnet_hdr, int vnet_hdr_required
#else
TFR(fd = open("/dev/tap", O_RDWR));
if (fd < 0) {
fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
fprintf(stderr,
"warning: could not open /dev/tap: no virtual network emulation: %s\n",
strerror(errno));
return -1;
}
#endif
fstat(fd, &s);
#ifdef TAPGIFNAME
if (ioctl(fd, TAPGIFNAME, (void *)&ifr) < 0) {
fprintf(stderr, "warning: could not get tap name: %s\n",
strerror(errno));
return -1;
}
pstrcpy(ifname, ifname_size, ifr.ifr_name);
#else
if (fstat(fd, &s) < 0) {
fprintf(stderr,
"warning: could not stat /dev/tap: no virtual network emulation: %s\n",
strerror(errno));
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 */