From 052bd52fa978d3f04bc476137ad6e1b9a697f9bd Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Wed, 14 Oct 2015 12:11:27 +0300 Subject: [PATCH] net: don't set native endianness 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 Cc: Greg Kurz Cc: qemu-stable@nongnu.org Signed-off-by: Michael S. Tsirkin Reviewed-by: Marcel Apfelbaum --- net/net.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/net/net.c b/net/net.c index 39af8930b4..3c68f3faa8 100644 --- a/net/net.c +++ b/net/net.c @@ -524,20 +524,28 @@ 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)