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dpif: Shift ufid support checking up to dpif_backer.

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Previously, the dpif layer was responsible for determining datapath
support for UFIDs, which resulted in all ovs-dpctl utilities
inserting/deleting flows from the datapath each time they are run.
Shift this responsibility up to the dpif_backer.

There are two users of this functionality: Revalidators check for UFID
support to request a terser dump using UFIDs, and dpif-netlink uses this
to request flow_del operations to only return the UFID/stats. The latter
case was previously hidden from revalidators, but this change makes them
aware of it, and reuses the same "udpif->enable_ufid" flag for reducing
overhead of both flow dump and flow delete.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Andy Zhou <azhou@nicira.com>
This commit is contained in:
Joe Stringer
2014-12-16 17:44:40 -08:00
parent 627298c5b3
commit 8e1ffd757d
8 changed files with 60 additions and 77 deletions
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7
lib/dpif-netdev.c
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@@ -1584,12 +1584,6 @@ get_dpif_flow_stats(const struct dp_netdev_flow *netdev_flow,
}
}
static bool
dpif_netdev_check_ufid(struct dpif *dpif OVS_UNUSED)
{
return true;
}
/* Converts to the dpif_flow format, using 'key_buf' and 'mask_buf' for
* storing the netlink-formatted key/mask. 'key_buf' may be the same as
* 'mask_buf'. Actions will be returned without copying, by relying on RCU to
@@ -3254,7 +3248,6 @@ const struct dpif_class dpif_netdev_class = {
dpif_netdev_enable_upcall,
dpif_netdev_disable_upcall,
dpif_netdev_get_datapath_version,
dpif_netdev_check_ufid,
};
static void