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ovs-ofctl: Add "packet-out" command.

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I don't expect this to be widely useful.  An upcoming commit will add a
use in unit tests.

Signed-off-by: Ben Pfaff <blp@nicira.com>
This commit is contained in:
Ben Pfaff
2012-01-25 16:30:28 -08:00
parent a993007bee
commit 0c3d5fc89a
5 changed files with 84 additions and 5 deletions
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21
lib/learn.c
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@@ -384,6 +384,17 @@ learn_parse_spec(const char *orig, char *name, char *value,
}
}
/* Parses 'arg' as a set of arguments to the "learn" action and appends a
* matching NXAST_LEARN action to 'b'. The format parsed is described in
* ovs-ofctl(8).
*
* Prints an error on stderr and aborts the program if 'arg' syntax is invalid.
*
* If 'flow' is nonnull, then it should be the flow from a cls_rule that is
* the matching rule for the learning action. This helps to better validate
* the action's arguments.
*
* Modifies 'arg'. */
void
learn_parse(struct ofpbuf *b, char *arg, const struct flow *flow)
{
@@ -429,7 +440,7 @@ learn_parse(struct ofpbuf *b, char *arg, const struct flow *flow)
/* Check prerequisites. */
if (spec.src_type == NX_LEARN_SRC_FIELD
&& !mf_are_prereqs_ok(spec.src.field, flow)) {
&& flow && !mf_are_prereqs_ok(spec.src.field, flow)) {
ovs_fatal(0, "%s: cannot specify source field %s because "
"prerequisites are not satisfied",
orig, spec.src.field->name);
@@ -487,9 +498,11 @@ learn_parse(struct ofpbuf *b, char *arg, const struct flow *flow)
learn->len = htons(b->size - learn_ofs);
/* In theory the above should have caught any errors, but... */
error = learn_check(learn, flow);
if (error) {
ovs_fatal(0, "%s: %s", orig, ofperr_to_string(error));
if (flow) {
error = learn_check(learn, flow);
if (error) {
ovs_fatal(0, "%s: %s", orig, ofperr_to_string(error));
}
}
free(orig);
}