-}
-
-/* Returns true if the only action for 'facet' is to send to the controller.
- * (We don't report NetFlow expiration messages for such facets because they
- * are just part of the control logic for the network, not real traffic). */
-static bool
-facet_is_controller_flow(struct facet *facet)
-{
- return (facet
- && facet->rule->n_actions == 1
- && action_outputs_to_port(&facet->rule->actions[0],
- htons(OFPP_CONTROLLER)));
-}
-
-/* Folds all of 'facet''s statistics into its rule. Also updates the
- * accounting ofhook and emits a NetFlow expiration if appropriate. All of
- * 'facet''s statistics in the datapath should have been zeroed and folded into
- * its packet and byte counts before this function is called. */
-static void
-facet_flush_stats(struct ofproto *ofproto, struct facet *facet)
-{
- assert(!facet->dp_byte_count);
- assert(!facet->dp_packet_count);
-
- facet_push_stats(ofproto, facet);
- facet_account(ofproto, facet, 0);
-
- if (ofproto->netflow && !facet_is_controller_flow(facet)) {
- struct ofexpired expired;
- expired.flow = facet->flow;
- expired.packet_count = facet->packet_count;
- expired.byte_count = facet->byte_count;
- expired.used = facet->used;
- netflow_expire(ofproto->netflow, &facet->nf_flow, &expired);
- }
-
- facet->rule->packet_count += facet->packet_count;
- facet->rule->byte_count += facet->byte_count;
-
- /* Reset counters to prevent double counting if 'facet' ever gets
- * reinstalled. */
- facet->packet_count = 0;
- facet->byte_count = 0;
- facet->rs_packet_count = 0;
- facet->rs_byte_count = 0;
- facet->accounted_bytes = 0;
-
- netflow_flow_clear(&facet->nf_flow);
-}
-
-/* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
- * Returns it if found, otherwise a null pointer.
- *
- * The returned facet might need revalidation; use facet_lookup_valid()
- * instead if that is important. */
-static struct facet *
-facet_find(struct ofproto *ofproto, const struct flow *flow)
-{
- struct facet *facet;
-
- HMAP_FOR_EACH_WITH_HASH (facet, hmap_node, flow_hash(flow, 0),
- &ofproto->facets) {
- if (flow_equal(flow, &facet->flow)) {
- return facet;
- }
- }
-
- return NULL;
-}
-
-/* Searches 'ofproto''s table of facets for one exactly equal to 'flow'.
- * Returns it if found, otherwise a null pointer.
- *
- * The returned facet is guaranteed to be valid. */
-static struct facet *
-facet_lookup_valid(struct ofproto *ofproto, const struct flow *flow)
-{
- struct facet *facet = facet_find(ofproto, flow);
-
- /* The facet we found might not be valid, since we could be in need of
- * revalidation. If it is not valid, don't return it. */
- if (facet
- && ofproto->need_revalidate
- && !facet_revalidate(ofproto, facet)) {
- COVERAGE_INC(ofproto_invalidated);
- return NULL;
- }
-
- return facet;
-}
-
-/* Re-searches 'ofproto''s classifier for a rule matching 'facet':
- *
- * - If the rule found is different from 'facet''s current rule, moves
- * 'facet' to the new rule and recompiles its actions.
- *
- * - If the rule found is the same as 'facet''s current rule, leaves 'facet'
- * where it is and recompiles its actions anyway.
- *
- * - If there is none, destroys 'facet'.
- *
- * Returns true if 'facet' still exists, false if it has been destroyed. */
-static bool
-facet_revalidate(struct ofproto *ofproto, struct facet *facet)
-{
- struct action_xlate_ctx ctx;
- struct ofpbuf *odp_actions;
- struct rule *new_rule;
- bool actions_changed;
-
- COVERAGE_INC(facet_revalidate);
-
- /* Determine the new rule. */
- new_rule = rule_lookup(ofproto, &facet->flow);
- if (!new_rule) {
- /* No new rule, so delete the facet. */
- facet_remove(ofproto, facet);
- return false;
- }
-
- /* Calculate new ODP actions.
- *
- * We do not modify any 'facet' state yet, because we might need to, e.g.,
- * emit a NetFlow expiration and, if so, we need to have the old state
- * around to properly compose it. */
- action_xlate_ctx_init(&ctx, ofproto, &facet->flow, NULL);
- odp_actions = xlate_actions(&ctx, new_rule->actions, new_rule->n_actions);
- actions_changed = (facet->actions_len != odp_actions->size
- || memcmp(facet->actions, odp_actions->data,
- facet->actions_len));
-
- /* If the ODP actions changed or the installability changed, then we need
- * to talk to the datapath. */
- if (actions_changed || ctx.may_set_up_flow != facet->installed) {
- if (ctx.may_set_up_flow) {
- struct dpif_flow_stats stats;
-
- facet_put__(ofproto, facet,
- odp_actions->data, odp_actions->size, &stats);
- facet_update_stats(ofproto, facet, &stats);
- } else {
- facet_uninstall(ofproto, facet);
- }
-
- /* The datapath flow is gone or has zeroed stats, so push stats out of
- * 'facet' into 'rule'. */
- facet_flush_stats(ofproto, facet);
- }
-
- /* Update 'facet' now that we've taken care of all the old state. */
- facet->tags = ctx.tags;
- facet->nf_flow.output_iface = ctx.nf_output_iface;
- facet->may_install = ctx.may_set_up_flow;
- if (actions_changed) {
- free(facet->actions);
- facet->actions_len = odp_actions->size;
- facet->actions = xmemdup(odp_actions->data, odp_actions->size);
- }
- if (facet->rule != new_rule) {
- COVERAGE_INC(facet_changed_rule);
- list_remove(&facet->list_node);
- list_push_back(&new_rule->facets, &facet->list_node);
- facet->rule = new_rule;
- facet->used = new_rule->created;
- facet->rs_used = facet->used;
- }
-
- ofpbuf_delete(odp_actions);
-
- return true;
-}
-\f
-static void
-queue_tx(struct ofpbuf *msg, const struct ofconn *ofconn,
- struct rconn_packet_counter *counter)
-{
- update_openflow_length(msg);
- if (rconn_send(ofconn->rconn, msg, counter)) {
- ofpbuf_delete(msg);
- }
-}
-
-static void
-send_error_oh(const struct ofconn *ofconn, const struct ofp_header *oh,
- int error)
-{
- struct ofpbuf *buf = ofputil_encode_error_msg(error, oh);
- if (buf) {
- COVERAGE_INC(ofproto_error);
- queue_tx(buf, ofconn, ofconn->reply_counter);
- }
-}
-
-static void
-hton_ofp_phy_port(struct ofp_phy_port *opp)
-{
- opp->port_no = htons(opp->port_no);
- opp->config = htonl(opp->config);
- opp->state = htonl(opp->state);
- opp->curr = htonl(opp->curr);
- opp->advertised = htonl(opp->advertised);
- opp->supported = htonl(opp->supported);
- opp->peer = htonl(opp->peer);
-}
-
-static int
-handle_echo_request(struct ofconn *ofconn, const struct ofp_header *oh)
-{
- queue_tx(make_echo_reply(oh), ofconn, ofconn->reply_counter);
- return 0;
-}
-
-static int
-handle_features_request(struct ofconn *ofconn, const struct ofp_header *oh)
-{
- struct ofp_switch_features *osf;
- struct ofpbuf *buf;
- struct ofport *port;
-
- osf = make_openflow_xid(sizeof *osf, OFPT_FEATURES_REPLY, oh->xid, &buf);
- osf->datapath_id = htonll(ofconn->ofproto->datapath_id);
- osf->n_buffers = htonl(pktbuf_capacity());
- osf->n_tables = 2;
- osf->capabilities = htonl(OFPC_FLOW_STATS | OFPC_TABLE_STATS |
- OFPC_PORT_STATS | OFPC_ARP_MATCH_IP);
- osf->actions = htonl((1u << OFPAT_OUTPUT) |
- (1u << OFPAT_SET_VLAN_VID) |
- (1u << OFPAT_SET_VLAN_PCP) |
- (1u << OFPAT_STRIP_VLAN) |
- (1u << OFPAT_SET_DL_SRC) |
- (1u << OFPAT_SET_DL_DST) |
- (1u << OFPAT_SET_NW_SRC) |
- (1u << OFPAT_SET_NW_DST) |
- (1u << OFPAT_SET_NW_TOS) |
- (1u << OFPAT_SET_TP_SRC) |
- (1u << OFPAT_SET_TP_DST) |
- (1u << OFPAT_ENQUEUE));
-
- HMAP_FOR_EACH (port, hmap_node, &ofconn->ofproto->ports) {
- hton_ofp_phy_port(ofpbuf_put(buf, &port->opp, sizeof port->opp));
- }
-
- queue_tx(buf, ofconn, ofconn->reply_counter);
- return 0;
-}
-
-static int
-handle_get_config_request(struct ofconn *ofconn, const struct ofp_header *oh)
-{
- struct ofpbuf *buf;
- struct ofp_switch_config *osc;
- uint16_t flags;
- bool drop_frags;
-
- /* Figure out flags. */
- dpif_get_drop_frags(ofconn->ofproto->dpif, &drop_frags);
- flags = drop_frags ? OFPC_FRAG_DROP : OFPC_FRAG_NORMAL;
-
- /* Send reply. */
- osc = make_openflow_xid(sizeof *osc, OFPT_GET_CONFIG_REPLY, oh->xid, &buf);
- osc->flags = htons(flags);
- osc->miss_send_len = htons(ofconn->miss_send_len);
- queue_tx(buf, ofconn, ofconn->reply_counter);
-
- return 0;
-}
-
-static int
-handle_set_config(struct ofconn *ofconn, const struct ofp_switch_config *osc)
-{
- uint16_t flags = ntohs(osc->flags);
-
- if (ofconn->type == OFCONN_PRIMARY && ofconn->role != NX_ROLE_SLAVE) {
- switch (flags & OFPC_FRAG_MASK) {
- case OFPC_FRAG_NORMAL:
- dpif_set_drop_frags(ofconn->ofproto->dpif, false);
- break;
- case OFPC_FRAG_DROP:
- dpif_set_drop_frags(ofconn->ofproto->dpif, true);
- break;
- default:
- VLOG_WARN_RL(&rl, "requested bad fragment mode (flags=%"PRIx16")",
- osc->flags);
- break;
- }
- }
-
- ofconn->miss_send_len = ntohs(osc->miss_send_len);
-
- return 0;
-}
-
-static void do_xlate_actions(const union ofp_action *in, size_t n_in,
- struct action_xlate_ctx *ctx);
-
-static void
-add_output_action(struct action_xlate_ctx *ctx, uint16_t port)
-{
- const struct ofport *ofport = get_port(ctx->ofproto, port);