* [RFC PATCH V2 2/5] Add a new device flag for zero copy
@ 2010-12-10 9:57 Shirley Ma
0 siblings, 0 replies; only message in thread
From: Shirley Ma @ 2010-12-10 9:57 UTC (permalink / raw)
To: Avi Kivity, Arnd Bergmann, mst; +Cc: xiaohui.xin, netdev, kvm, linux-kernel
Signed-off-by: Shirley Ma <xma@us.ibm.com>
---
include/linux/netdevice.h | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index d8fd2c2..7207665 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -857,6 +857,9 @@ struct net_device {
#define NETIF_F_NTUPLE (1 << 27) /* N-tuple filters supported */
#define NETIF_F_RXHASH (1 << 28) /* Receive hashing offload */
+/* bit 29 is for device to map userspace buffers -- zerocopy */
+#define NETIF_F_ZEROCOPY (1 << 29)
+
/* Segmentation offload features */
#define NETIF_F_GSO_SHIFT 16
#define NETIF_F_GSO_MASK 0x00ff0000
^ permalink raw reply related [flat|nested] only message in thread
only message in thread, other threads:[~2010-12-10 9:57 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2010-12-10 9:57 [RFC PATCH V2 2/5] Add a new device flag for zero copy Shirley Ma
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).