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authorDavid S. Miller <davem@davemloft.net>2011-01-28 09:01:53 +0300
committerDavid S. Miller <davem@davemloft.net>2011-01-28 09:01:53 +0300
commita4daad6b0923030fbd3b00a01f570e4c3eef446b (patch)
treeb8e5b9a2110628503e57149f0bb2a4bb1bf3f027 /include/net/flow.h
parent8571a19c4ac140f1a507f3e7eb716892afa27109 (diff)
downloadlinux-a4daad6b0923030fbd3b00a01f570e4c3eef446b.tar.xz
net: Pre-COW metrics for TCP.
TCP is going to record metrics for the connection, so pre-COW the route metrics at route cache entry creation time. This avoids several atomic operations that have to occur if we COW the metrics after the entry reaches global visibility. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/flow.h')
-rw-r--r--include/net/flow.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/net/flow.h b/include/net/flow.h
index 240b7f356c71..1ae901f24436 100644
--- a/include/net/flow.h
+++ b/include/net/flow.h
@@ -48,7 +48,8 @@ struct flowi {
__u8 proto;
__u8 flags;
-#define FLOWI_FLAG_ANYSRC 0x01
+#define FLOWI_FLAG_ANYSRC 0x01
+#define FLOWI_FLAG_PRECOW_METRICS 0x02
union {
struct {
__be16 sport;