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Add ability to direct "packet-in"s to particular controllers.

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Nicira's controllers are somewhat heterogeneous, so that particular
"packet-in" messages should be directed to particular controllers.  This
new Nicira extension action allows designating a controller or controllers
to receive the "packet-in" using a 16-bit integer ID.

The new NXAST_CONTROLLER action also specifies the "reason" code to include
in the "packet-in" message.  This is particularly useful for simulating a
"no-match" "packet-in" using a rule.

Feature #8946.
Signed-off-by: Ben Pfaff <blp@nicira.com>
This commit is contained in:
Ben Pfaff
2012-02-09 14:17:33 -08:00
parent 7c1a76a467
commit a7349929fb
18 changed files with 254 additions and 23 deletions
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10
lib/ofp-util.c
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@@ -404,6 +404,10 @@ ofputil_decode_vendor(const struct ofp_header *oh, size_t length,
{ OFPUTIL_NXT_SET_ASYNC_CONFIG, OFP10_VERSION,
NXT_SET_ASYNC_CONFIG, "NXT_SET_ASYNC_CONFIG",
sizeof(struct nx_async_config), 0 },
{ OFPUTIL_NXT_SET_CONTROLLER_ID, OFP10_VERSION,
NXT_SET_CONTROLLER_ID, "NXT_SET_CONTROLLER_ID",
sizeof(struct nx_controller_id), 0 },
};
static const struct ofputil_msg_category nxt_category = {
@@ -2527,6 +2531,12 @@ validate_actions(const union ofp_action *actions, size_t n_actions,
error = learn_check((const struct nx_action_learn *) a, flow);
break;
case OFPUTIL_NXAST_CONTROLLER:
if (((const struct nx_action_controller *) a)->zero) {
error = OFPERR_NXBAC_MUST_BE_ZERO;
}
break;
case OFPUTIL_OFPAT_STRIP_VLAN:
case OFPUTIL_OFPAT_SET_NW_SRC:
case OFPUTIL_OFPAT_SET_NW_DST: