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.
---
lib/ofp-parse.c | 6 ++++++
utilities/ovs-ofctl.8.in | 5 +++++
2 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/lib/ofp-parse.c b/lib/ofp-parse.c
index 956f1c2..5b5bd59 100644
--- a/lib/ofp-parse.c
+++ b/lib/ofp-parse.c
@@ -883,6 +883,12 @@ 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);
}
diff --git a/utilities/ovs-ofctl.8.in b/utilities/ovs-ofctl.8.in
index 2d17d20..48a44e1 100644
--- a/utilities/ovs-ofctl.8.in
+++ b/utilities/ovs-ofctl.8.in
@@ -548,6 +548,11 @@ Same as \fBdl_type=0x86dd,nw_proto=17\fR.
Same as \fBdl_type=0x86dd,nw_proto=58\fR.
.
.PP
+Finally, field assignments to \fBduration\fR, \fBn_packets\fR, or
+\fBn_bytes\fR are ignored to allow output from the \fBdump\-flows\fR
+command to be used as input for other commands that parse flows.
+.
+.PP
The \fBadd\-flow\fR and \fBadd\-flows\fR commands require an additional
field, which must be the final field specified:
.
--
1.7.4.4
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