linux-kernel - [PATCH V3 1/8] Add a new sock zerocopy flag

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Message-ID: <1303328545.19336.22.camel@localhost.localdomain>
Date:	Wed, 20 Apr 2011 12:42:25 -0700
From:	Shirley Ma <mashirle@...ibm.com>
To:	David Miller <davem@...emloft.net>
Cc:	mst@...hat.com, Eric Dumazet <eric.dumazet@...il.com>,
	Avi Kivity <avi@...hat.com>, Arnd Bergmann <arnd@...db.de>,
	netdev@...r.kernel.org, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH V3 1/8] Add a new sock zerocopy flag

This sock zerocopy flag is used to support lower level device DMA 
userspace buffers.

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

 include/net/sock.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/include/net/sock.h b/include/net/sock.h
index 01810a3..daa0a80 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -562,6 +562,7 @@ enum sock_flags {
 	SOCK_TIMESTAMPING_SYS_HARDWARE, /* %SOF_TIMESTAMPING_SYS_HARDWARE */
 	SOCK_FASYNC, /* fasync() active */
 	SOCK_RXQ_OVFL,
+	SOCK_ZEROCOPY,
 };
 
 static inline void sock_copy_flags(struct sock *nsk, struct sock *osk)


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