xen/0002-net-increase-tap-buffer-size.patch
Charles Arnold e09562d587 - Update to Xen 4.4.0 RC1 c/s 28233
- Drop 32bit support from spec file
- Dropped 520d417d-xen-Add-stdbool.h-workaround-for-BSD.patch

OBS-URL: https://build.opensuse.org/package/show/Virtualization/xen?expand=0&rev=282
2014-01-02 19:09:07 +00:00

48 lines
1.4 KiB
Diff

From: Michal Kubecek <mkubecek@suse.cz>
Date: Fri, 27 Sep 2013 19:05:45 +0200
Subject: net: increase tap buffer size
Patch-mainline: v0.12.0-rc0
Git-commit: 8e0f8e5bf8fd483dd28329055336cf895b74c89f (partial)
References: bnc#840196
Increase size of buffere embedded in struct TAPState to allow
jumbo frames longer then 4096 bytes.
Part of upstream qemu commit
8e0f8e5b net: enable IFF_VNET_HDR on tap fds if available
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
---
tools/qemu-xen-traditional-dir-remote/net.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/tools/qemu-xen-traditional-dir-remote/net.c b/tools/qemu-xen-traditional-dir-remote/net.c
index 2ca85a3..502a691 100644
--- a/tools/qemu-xen-traditional-dir-remote/net.c
+++ b/tools/qemu-xen-traditional-dir-remote/net.c
@@ -693,6 +693,11 @@ static void vmchannel_read(void *opaque, const uint8_t *buf, int size)
#if !defined(_WIN32)
+/* Maximum GSO packet size (64k) plus plenty of room for
+ * the ethernet and virtio_net headers
+ */
+#define TAP_BUFSIZE (4096 + 65536)
+
typedef struct TAPState {
VLANClientState *vc;
int fd;
@@ -700,7 +705,7 @@ typedef struct TAPState {
char down_script[1024];
char down_script_arg[128];
char script_arg[1024];
- uint8_t buf[4096];
+ uint8_t buf[TAP_BUFSIZE];
} TAPState;
#ifndef CONFIG_STUBDOM
--
1.8.1.4