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[Qemu-devel] [PATCH] Check for TUNSETOFFLOAD support before trying to en
From: |
Pierre Riteau |
Subject: |
[Qemu-devel] [PATCH] Check for TUNSETOFFLOAD support before trying to enable offload features |
Date: |
Wed, 25 Nov 2009 11:04:42 +0100 |
This avoids the "TUNSETOFFLOAD ioctl() failed: Invalid argument" message
on kernels without TUNSETOFFLOAD support.
Signed-off-by: Pierre Riteau <address@hidden>
---
net/tap-linux.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/net/tap-linux.c b/net/tap-linux.c
index 0f621a2..e038e1a 100644
--- a/net/tap-linux.c
+++ b/net/tap-linux.c
@@ -129,6 +129,11 @@ void tap_fd_set_offload(int fd, int csum, int tso4,
{
unsigned int offload = 0;
+ /* Check if our kernel supports TUNSETOFFLOAD */
+ if (ioctl(fd, TUNSETOFFLOAD, 0) != 0 && errno == EINVAL) {
+ return;
+ }
+
if (csum) {
offload |= TUN_F_CSUM;
if (tso4)
--
1.6.5
- [Qemu-devel] [PATCH] Check for TUNSETOFFLOAD support before trying to enable offload features,
Pierre Riteau <=