Don't install a flow if it's the result of the "userspace" action for an
already installed facet. This can occur when a datapath flow with
wildcards has a "userspace" action and flows sent to userspace result in
a different subfacet, which will then be rejected as overlapping by the
datapath.
Signed-off-by: Justin Pettit <jpet...@nicira.com>
Co-authored-by: Ethan Jackson <et...@nicira.com>
---
ofproto/ofproto-dpif.c | 25 +++++++++++++++++++++----
1 files changed, 21 insertions(+), 4 deletions(-)
diff --git a/ofproto/ofproto-dpif.c b/ofproto/ofproto-dpif.c
index 283336c..5c9527b 100644
--- a/ofproto/ofproto-dpif.c
+++ b/ofproto/ofproto-dpif.c
@@ -3395,11 +3395,7 @@ handle_flow_miss_with_facet(struct flow_miss *miss,
struct facet *facet,
struct subfacet *subfacet;
struct ofpbuf *packet;
- subfacet = subfacet_create(facet, miss, now);
want_path = facet->xout.slow ? SF_SLOW_PATH : SF_FAST_PATH;
- if (stats) {
- subfacet_update_stats(subfacet, stats);
- }
LIST_FOR_EACH (packet, list_node, &miss->packets) {
struct flow_miss_op *op = &ops[*n_ops];
@@ -3426,6 +3422,27 @@ handle_flow_miss_with_facet(struct flow_miss *miss,
struct facet *facet,
}
}
+ /* Don't install the flow if it's the result of the "userspace"
+ * action for an already installed facet. This can occur when a
+ * datapath flow with wildcards has a "userspace" action and flows
+ * sent to userspace result in a different subfacet, which will then
+ * be rejected as overlapping by the datapath. */
+ if (miss->upcall_type == DPIF_UC_ACTION
+ && !list_is_empty(&facet->subfacets)) {
+ if (stats) {
+ facet->used = MAX(facet->used, stats->used);
+ facet->packet_count += stats->n_packets;
+ facet->byte_count += stats->n_bytes;
+ facet->tcp_flags |= stats->tcp_flags;
+ }
+ return;
+ }
+
+ subfacet = subfacet_create(facet, miss, now);
+ if (stats) {
+ subfacet_update_stats(subfacet, stats);
+ }
+
if (miss->upcall_type == DPIF_UC_MISS || subfacet->path != want_path) {
struct flow_miss_op *op = &ops[(*n_ops)++];
struct dpif_flow_put *put = &op->dpif_op.u.flow_put;
--
1.7.5.4
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