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net: move tap_probe_vnet_hdr() to tap-linux.c

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Only Linux has support for IFF_VNET_HDR

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Mark McLoughlin 2009-10-22 17:49:14 +01:00 • committed by Anthony Liguori
parent 15ac913bfe
commit dc69004c7d
6 changed files with 27 additions and 12 deletions
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12
net/tap-linux.c
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@ -99,3 +99,15 @@ int tap_set_sndbuf(int fd, QemuOpts *opts)
}
return 0;
}
int tap_probe_vnet_hdr(int fd)
{
struct ifreq ifr;
if (ioctl(fd, TUNGETIFF, &ifr) != 0) {
qemu_error("TUNGETIFF ioctl() failed: %s\n", strerror(errno));
return 0;
}
return ifr.ifr_flags & IFF_VNET_HDR;
}