-/* Copyright (c) 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
+/* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
struct odputil_keybuf mask_buf;
struct xlate_out xout;
+
+ bool put;
};
static void upcall_destroy(struct upcall *);
latch_destroy(&udpif->exit_latch);
seq_destroy(udpif->reval_seq);
seq_destroy(udpif->dump_seq);
+ atomic_destroy(&udpif->max_idle);
+ atomic_destroy(&udpif->flow_limit);
free(udpif);
}
atomic_store(&udpif->flow_limit, flow_limit);
if (duration > 2000) {
- VLOG_WARN("Spent an unreasonably long %lldms dumping flows",
+ VLOG_INFO("Spent an unreasonably long %lldms dumping flows",
duration);
}
handler->name = xasprintf("handler_%u", ovsthread_id_self());
set_subprogram_name("%s", handler->name);
- for (;;) {
+ while (!latch_is_set(&handler->udpif->exit_latch)) {
struct list misses = LIST_INITIALIZER(&misses);
size_t i;
ovs_mutex_lock(&handler->mutex);
-
- if (latch_is_set(&handler->udpif->exit_latch)) {
- ovs_mutex_unlock(&handler->mutex);
- return NULL;
- }
-
if (!handler->n_upcalls) {
ovs_mutex_cond_wait(&handler->wake_cond, &handler->mutex);
}
coverage_clear();
}
+
+ return NULL;
}
static void *
miss->stats.used = time_msec();
miss->stats.tcp_flags = 0;
miss->odp_in_port = odp_in_port;
+ miss->put = false;
n_misses++;
} else {
LIST_FOR_EACH (upcall, list_node, upcalls) {
struct flow_miss *miss = upcall->flow_miss;
struct ofpbuf *packet = &upcall->dpif_upcall.packet;
- struct ofpbuf mask;
struct dpif_op *op;
- bool megaflow;
+ ovs_be16 flow_vlan_tci;
+
+ /* Save a copy of flow.vlan_tci in case it is changed to
+ * generate proper mega flow masks for VLAN splinter flows. */
+ flow_vlan_tci = miss->flow.vlan_tci;
if (miss->xout.slow) {
struct xlate_in xin;
xlate_actions_for_side_effects(&xin);
}
- atomic_read(&enable_megaflows, &megaflow);
- ofpbuf_use_stack(&mask, &miss->mask_buf, sizeof miss->mask_buf);
- if (megaflow) {
- odp_flow_key_from_mask(&mask, &miss->xout.wc.masks, &miss->flow,
- UINT32_MAX);
+ if (miss->flow.in_port.ofp_port
+ != vsp_realdev_to_vlandev(miss->ofproto,
+ miss->flow.in_port.ofp_port,
+ miss->flow.vlan_tci)) {
+ /* This packet was received on a VLAN splinter port. We
+ * added a VLAN to the packet to make the packet resemble
+ * the flow, but the actions were composed assuming that
+ * the packet contained no VLAN. So, we must remove the
+ * VLAN header from the packet before trying to execute the
+ * actions. */
+ if (miss->xout.odp_actions.size) {
+ eth_pop_vlan(packet);
+ }
+
+ /* Remove the flow vlan tags inserted by vlan splinter logic
+ * to ensure megaflow masks generated match the data path flow. */
+ miss->flow.vlan_tci = 0;
}
- if (may_put) {
+ /* Do not install a flow into the datapath if:
+ *
+ * - The datapath already has too many flows.
+ *
+ * - An earlier iteration of this loop already put the same flow.
+ *
+ * - We received this packet via some flow installed in the kernel
+ * already. */
+ if (may_put
+ && !miss->put
+ && upcall->dpif_upcall.type == DPIF_UC_MISS) {
+ struct ofpbuf mask;
+ bool megaflow;
+
+ miss->put = true;
+
+ atomic_read(&enable_megaflows, &megaflow);
+ ofpbuf_use_stack(&mask, &miss->mask_buf, sizeof miss->mask_buf);
+ if (megaflow) {
+ odp_flow_key_from_mask(&mask, &miss->xout.wc.masks,
+ &miss->flow, UINT32_MAX);
+ }
+
op = &ops[n_ops++];
op->type = DPIF_OP_FLOW_PUT;
op->u.flow_put.flags = DPIF_FP_CREATE | DPIF_FP_MODIFY;
}
}
+ /*
+ * The 'miss' may be shared by multiple upcalls. Restore
+ * the saved flow vlan_tci field before processing the next
+ * upcall. */
+ miss->flow.vlan_tci = flow_vlan_tci;
+
if (miss->xout.odp_actions.size) {
- if (miss->flow.in_port.ofp_port
- != vsp_realdev_to_vlandev(miss->ofproto,
- miss->flow.in_port.ofp_port,
- miss->flow.vlan_tci)) {
- /* This packet was received on a VLAN splinter port. We
- * added a VLAN to the packet to make the packet resemble
- * the flow, but the actions were composed assuming that
- * the packet contained no VLAN. So, we must remove the
- * VLAN header from the packet before trying to execute the
- * actions. */
- eth_pop_vlan(packet);
- }
op = &ops[n_ops++];
op->type = DPIF_OP_EXECUTE;
- op->u.execute.key = miss->key;
- op->u.execute.key_len = miss->key_len;
op->u.execute.packet = packet;
+ odp_key_to_pkt_metadata(miss->key, miss->key_len,
+ &op->u.execute.md);
op->u.execute.actions = miss->xout.odp_actions.data;
op->u.execute.actions_len = miss->xout.odp_actions.size;
op->u.execute.needs_help = (miss->xout.slow & SLOW_ACTION) != 0;