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| author | David S. Miller <davem@davemloft.net> | 2011-01-28 07:01:53 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-01-28 07:01:53 +0100 |
| commit | a4daad6b0923030fbd3b00a01f570e4c3eef446b (patch) | |
| tree | b8e5b9a2110628503e57149f0bb2a4bb1bf3f027 /include/net/flow.h | |
| parent | Merge branch 'master' of ssh://master.kernel.org/pub/scm/linux/kernel/git/lin... (diff) | |
| download | linux-a4daad6b0923030fbd3b00a01f570e4c3eef446b.tar.xz linux-a4daad6b0923030fbd3b00a01f570e4c3eef446b.zip | |
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.h | 3 |
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; |