diff mbox

[V3,2/8] Add a new zerocopy device flag

Message ID 1303331430.19336.67.camel@localhost.localdomain (mailing list archive)
State New, archived
Headers show

Commit Message

Shirley Ma April 20, 2011, 8:30 p.m. UTC
Resubmit it with 31 bit.

Signed-off-by: Shirley Ma <xma@us.ibm.com>
---

 include/linux/netdevice.h |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)



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diff mbox

Patch

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 0249fe7..0998d3d 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1067,6 +1067,9 @@  struct net_device {
 #define NETIF_F_RXHASH		(1 << 28) /* Receive hashing offload */
 #define NETIF_F_RXCSUM		(1 << 29) /* Receive checksumming offload */
 
+/* Bit 31 is for device to map userspace buffers -- zerocopy */
+#define NETIF_F_ZEROCOPY	(1 << 31)
+
 	/* Segmentation offload features */
 #define NETIF_F_GSO_SHIFT	16
 #define NETIF_F_GSO_MASK	0x00ff0000