commit 5be7d9f1b1452613b95c6ba70b8d7ad3d0797991 vhost-net: tell tap backend about the vnet endianness makes vhost net always try to set LE - even if that matches the native endian-ness.
This makes it fail on older kernels on x86 without TUNSETVNETLE support. To fix, make qemu_set_vnet_le/qemu_set_vnet_be skip the ioctl if it matches the host endian-ness. Reported-by: Marcel Apfelbaum <mar...@redhat.com> Cc: Greg Kurz <gk...@linux.vnet.ibm.com> Cc: qemu-sta...@nongnu.org Signed-off-by: Michael S. Tsirkin <m...@redhat.com> --- net/net.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/net/net.c b/net/net.c index 28a5597..8e96011 100644 --- a/net/net.c +++ b/net/net.c @@ -517,20 +517,28 @@ void qemu_set_vnet_hdr_len(NetClientState *nc, int len) int qemu_set_vnet_le(NetClientState *nc, bool is_le) { +#ifdef HOST_WORDS_BIGENDIAN if (!nc || !nc->info->set_vnet_le) { return -ENOSYS; } return nc->info->set_vnet_le(nc, is_le); +#else + return 0; +#endif } int qemu_set_vnet_be(NetClientState *nc, bool is_be) { +#ifdef HOST_WORDS_BIGENDIAN + return 0; +#else if (!nc || !nc->info->set_vnet_be) { return -ENOSYS; } return nc->info->set_vnet_be(nc, is_be); +#endif } int qemu_can_send_packet(NetClientState *sender) -- MST