ofp-parse: Ignore extra fields produced by dump-flows.

It's reasonable to want to dump a flow table with "dump-flows" and then
later use that output as input to other commands that read flows, but until
now that hasn't been directly possible because "dump-flows" adds extra
fields that other commands reject on input.  This changes the flow parser
to just ignore those extra fields.

1 files changed, 6 insertions, 0 deletions

diff --git a/lib/ofp-parse.c b/lib/ofp-parse.c
index efcfab07e..a4679a3ac 100644
--- a/lib/ofp-parse.c
+++ b/lib/ofp-parse.c
@@ -878,6 +878,12 @@ parse_ofp_str(struct flow_mod *fm, struct ofpbuf *actions, char *string)
                     ovs_fatal(0, "only %d registers supported", FLOW_N_REGS);
                 }
                 parse_reg_value(&fm->cr, reg_idx, value);
+            } else if (!strcmp(name, "duration")
+                       || !strcmp(name, "n_packets")
+                       || !strcmp(name, "n_bytes")) {
+                /* Ignore these, so that users can feed the output of
+                 * "ovs-ofctl dump-flows" back into commands that parse
+                 * flows. */
             } else {
                 ovs_fatal(0, "unknown keyword %s", name);
             }