ofproto-dpif-xlate: Suppress some warnings on non-Linux OSes

These warnings were introduced by
commit 7d031d7e511aeea8dd45348922fe8e3bbdd2956e
("ofproto-dpif-xlate: Work around Linux netdev_max_backlog limit.")
and found by --enable-Werror build on NetBSD.

Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Signed-off-by: Ben Pfaff <blp@nicira.com>
datapath-windows: fix bug in NlBufCopyAtTailUninit

We should be returning value of tail before the increment
and not after.

Signed-off-by: Nithin Raju <nithin@vmware.com>
Acked-by: Ankur Sharma <ankursharma@vmware.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
datapath-windows: use the Netlink set API and need new APIs

In this change:
1. we refactor the code that fills up information about the DP into
a seprate function.
2. use the netlink set APIs to fill up the netlink attributes.
3. we define a OVS_DP_STATS to be a typedef of 'struct ovs_dp_stats'
in keeping with the Windows kernel naming conventions.
4. In the absence of netlink set API, I had put in an ASSERT earlier
that the output buffer should be limited to 512 bytes. This is not
true anymore. The netlink set API checks for bounds of the buffer.
Hence removed the ASSERT.

Signed-off-by: Nithin Raju <nithin@vmware.com>
Acked-by: Ankur Sharma <ankursharma@vmware.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
ovs-dev.py: Support additional optimization flags.

They may or may not make a difference, but there's no reason not to
support passing them.

Signed-off-by: Ethan Jackson <ethan@nicira.com>
Acked-by: Daniele Di Proietto <ddiproietto@vmware.com>
ovs-dev.py: Support running the clang binaries.

They have slightly different support characteristics, so it's nice to
easily switch between them for testing.

Signed-off-by: Ethan Jackson <ethan@nicira.com>
Acked-by: Daniele Di Proietto <ddiproietto@vmware.com>
datapath-windows/Netlink: Added support for variable length attributes in validation.

Added minor fix for allowing support for variable lenghth attributes in
parsing policy.

Signed-off-by: Ankur Sharma <ankursharma@vmware.com>
Acked-by: Nithin Raju <nithin@vmware.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
datapath-windows: Add support for getting 64 and 16 bit attributes.

Signed-off-by: Ankur Sharma <ankursharma@vmware.com>
Acked-by: Nithin Raju <nithin@vmware.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
datapath-windows/Netlink: Add optional flag in policy.

Added the optional flag in policy structure. This would allow
caller to avoid checks for mandatory attributes if parsing
succeeds.

Signed-off-by: Ankur Sharma <ankursharma@vmware.com>
Acked-by: Nithin Raju <nithin@vmware.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>