ofproto/ofproto.c \
ofproto/ofproto.h \
ofproto/ofproto-dpif.c \
- ofproto/ofproto-sflow.c \
- ofproto/ofproto-sflow.h \
+ ofproto/ofproto-dpif-sflow.c \
+ ofproto/ofproto-dpif-sflow.h \
ofproto/pktbuf.c \
ofproto/pktbuf.h \
ofproto/pinsched.c \
--- /dev/null
+/*
+ * Copyright (c) 2009, 2010, 2011 Nicira Networks.
+ * Copyright (c) 2009 InMon Corp.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <config.h>
+#include "ofproto-dpif-sflow.h"
+#include <inttypes.h>
+#include <stdlib.h>
+#include "collectors.h"
+#include "compiler.h"
+#include "dpif.h"
+#include "hash.h"
+#include "hmap.h"
+#include "netdev.h"
+#include "netlink.h"
+#include "ofpbuf.h"
+#include "ofproto.h"
+#include "packets.h"
+#include "poll-loop.h"
+#include "sflow_api.h"
+#include "socket-util.h"
+#include "timeval.h"
+#include "vlog.h"
+
+VLOG_DEFINE_THIS_MODULE(sflow);
+
+struct dpif_sflow_port {
+ struct hmap_node hmap_node; /* In struct dpif_sflow's "ports" hmap. */
+ struct netdev *netdev; /* Underlying network device, for stats. */
+ SFLDataSource_instance dsi; /* sFlow library's notion of port number. */
+ uint16_t odp_port; /* ODP port number. */
+};
+
+struct dpif_sflow {
+ struct ofproto *ofproto;
+ struct collectors *collectors;
+ SFLAgent *sflow_agent;
+ struct ofproto_sflow_options *options;
+ struct dpif *dpif;
+ time_t next_tick;
+ size_t n_flood, n_all;
+ struct hmap ports; /* Contains "struct dpif_sflow_port"s. */
+};
+
+static void dpif_sflow_del_port__(struct dpif_sflow *,
+ struct dpif_sflow_port *);
+
+#define RECEIVER_INDEX 1
+
+static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
+
+static bool
+nullable_string_is_equal(const char *a, const char *b)
+{
+ return a ? b && !strcmp(a, b) : !b;
+}
+
+static bool
+ofproto_sflow_options_equal(const struct ofproto_sflow_options *a,
+ const struct ofproto_sflow_options *b)
+{
+ return (sset_equals(&a->targets, &b->targets)
+ && a->sampling_rate == b->sampling_rate
+ && a->polling_interval == b->polling_interval
+ && a->header_len == b->header_len
+ && a->sub_id == b->sub_id
+ && nullable_string_is_equal(a->agent_device, b->agent_device)
+ && nullable_string_is_equal(a->control_ip, b->control_ip));
+}
+
+static struct ofproto_sflow_options *
+ofproto_sflow_options_clone(const struct ofproto_sflow_options *old)
+{
+ struct ofproto_sflow_options *new = xmemdup(old, sizeof *old);
+ sset_clone(&new->targets, &old->targets);
+ new->agent_device = old->agent_device ? xstrdup(old->agent_device) : NULL;
+ new->control_ip = old->control_ip ? xstrdup(old->control_ip) : NULL;
+ return new;
+}
+
+static void
+ofproto_sflow_options_destroy(struct ofproto_sflow_options *options)
+{
+ if (options) {
+ sset_destroy(&options->targets);
+ free(options->agent_device);
+ free(options->control_ip);
+ free(options);
+ }
+}
+
+/* sFlow library callback to allocate memory. */
+static void *
+sflow_agent_alloc_cb(void *magic OVS_UNUSED, SFLAgent *agent OVS_UNUSED,
+ size_t bytes)
+{
+ return calloc(1, bytes);
+}
+
+/* sFlow library callback to free memory. */
+static int
+sflow_agent_free_cb(void *magic OVS_UNUSED, SFLAgent *agent OVS_UNUSED,
+ void *obj)
+{
+ free(obj);
+ return 0;
+}
+
+/* sFlow library callback to report error. */
+static void
+sflow_agent_error_cb(void *magic OVS_UNUSED, SFLAgent *agent OVS_UNUSED,
+ char *msg)
+{
+ VLOG_WARN("sFlow agent error: %s", msg);
+}
+
+/* sFlow library callback to send datagram. */
+static void
+sflow_agent_send_packet_cb(void *ds_, SFLAgent *agent OVS_UNUSED,
+ SFLReceiver *receiver OVS_UNUSED, u_char *pkt,
+ uint32_t pktLen)
+{
+ struct dpif_sflow *ds = ds_;
+ collectors_send(ds->collectors, pkt, pktLen);
+}
+
+static struct dpif_sflow_port *
+dpif_sflow_find_port(const struct dpif_sflow *ds, uint16_t odp_port)
+{
+ struct dpif_sflow_port *dsp;
+
+ HMAP_FOR_EACH_IN_BUCKET (dsp, hmap_node,
+ hash_int(odp_port, 0), &ds->ports) {
+ if (dsp->odp_port == odp_port) {
+ return dsp;
+ }
+ }
+ return NULL;
+}
+
+static void
+sflow_agent_get_counters(void *ds_, SFLPoller *poller,
+ SFL_COUNTERS_SAMPLE_TYPE *cs)
+{
+ struct dpif_sflow *ds = ds_;
+ SFLCounters_sample_element elem;
+ struct dpif_sflow_port *dsp;
+ SFLIf_counters *counters;
+ struct netdev_stats stats;
+ enum netdev_flags flags;
+ uint32_t current;
+
+ dsp = dpif_sflow_find_port(ds, poller->bridgePort);
+ if (!dsp) {
+ return;
+ }
+
+ elem.tag = SFLCOUNTERS_GENERIC;
+ counters = &elem.counterBlock.generic;
+ counters->ifIndex = SFL_DS_INDEX(poller->dsi);
+ counters->ifType = 6;
+ if (!netdev_get_features(dsp->netdev, ¤t, NULL, NULL, NULL)) {
+ /* The values of ifDirection come from MAU MIB (RFC 2668): 0 = unknown,
+ 1 = full-duplex, 2 = half-duplex, 3 = in, 4=out */
+ counters->ifSpeed = netdev_features_to_bps(current);
+ counters->ifDirection = (netdev_features_is_full_duplex(current)
+ ? 1 : 2);
+ } else {
+ counters->ifSpeed = 100000000;
+ counters->ifDirection = 0;
+ }
+ if (!netdev_get_flags(dsp->netdev, &flags) && flags & NETDEV_UP) {
+ counters->ifStatus = 1; /* ifAdminStatus up. */
+ if (netdev_get_carrier(dsp->netdev)) {
+ counters->ifStatus |= 2; /* ifOperStatus us. */
+ }
+ } else {
+ counters->ifStatus = 0; /* Down. */
+ }
+
+ /* XXX
+ 1. Is the multicast counter filled in?
+ 2. Does the multicast counter include broadcasts?
+ 3. Does the rx_packets counter include multicasts/broadcasts?
+ */
+ netdev_get_stats(dsp->netdev, &stats);
+ counters->ifInOctets = stats.rx_bytes;
+ counters->ifInUcastPkts = stats.rx_packets;
+ counters->ifInMulticastPkts = stats.multicast;
+ counters->ifInBroadcastPkts = -1;
+ counters->ifInDiscards = stats.rx_dropped;
+ counters->ifInErrors = stats.rx_errors;
+ counters->ifInUnknownProtos = -1;
+ counters->ifOutOctets = stats.tx_bytes;
+ counters->ifOutUcastPkts = stats.tx_packets;
+ counters->ifOutMulticastPkts = -1;
+ counters->ifOutBroadcastPkts = -1;
+ counters->ifOutDiscards = stats.tx_dropped;
+ counters->ifOutErrors = stats.tx_errors;
+ counters->ifPromiscuousMode = 0;
+
+ SFLADD_ELEMENT(cs, &elem);
+ sfl_poller_writeCountersSample(poller, cs);
+}
+
+/* Obtains an address to use for the local sFlow agent and stores it into
+ * '*agent_addr'. Returns true if successful, false on failure.
+ *
+ * The sFlow agent address should be a local IP address that is persistent and
+ * reachable over the network, if possible. The IP address associated with
+ * 'agent_device' is used if it has one, and otherwise 'control_ip', the IP
+ * address used to talk to the controller. */
+static bool
+sflow_choose_agent_address(const char *agent_device, const char *control_ip,
+ SFLAddress *agent_addr)
+{
+ struct in_addr in4;
+
+ memset(agent_addr, 0, sizeof *agent_addr);
+ agent_addr->type = SFLADDRESSTYPE_IP_V4;
+
+ if (agent_device) {
+ struct netdev *netdev;
+
+ if (!netdev_open_default(agent_device, &netdev)) {
+ int error = netdev_get_in4(netdev, &in4, NULL);
+ netdev_close(netdev);
+ if (!error) {
+ goto success;
+ }
+ }
+ }
+
+ if (control_ip && !lookup_ip(control_ip, &in4)) {
+ goto success;
+ }
+
+ VLOG_ERR("could not determine IP address for sFlow agent");
+ return false;
+
+success:
+ agent_addr->address.ip_v4.addr = (OVS_FORCE uint32_t) in4.s_addr;
+ return true;
+}
+
+void
+dpif_sflow_clear(struct dpif_sflow *ds)
+{
+ if (ds->sflow_agent) {
+ sfl_agent_release(ds->sflow_agent);
+ ds->sflow_agent = NULL;
+ }
+ collectors_destroy(ds->collectors);
+ ds->collectors = NULL;
+ ofproto_sflow_options_destroy(ds->options);
+ ds->options = NULL;
+
+ /* Turn off sampling to save CPU cycles. */
+ dpif_set_sflow_probability(ds->dpif, 0);
+}
+
+bool
+dpif_sflow_is_enabled(const struct dpif_sflow *ds)
+{
+ return ds->collectors != NULL;
+}
+
+struct dpif_sflow *
+dpif_sflow_create(struct dpif *dpif)
+{
+ struct dpif_sflow *ds;
+
+ ds = xcalloc(1, sizeof *ds);
+ ds->dpif = dpif;
+ ds->next_tick = time_now() + 1;
+ hmap_init(&ds->ports);
+ return ds;
+}
+
+void
+dpif_sflow_destroy(struct dpif_sflow *ds)
+{
+ if (ds) {
+ struct dpif_sflow_port *dsp, *next;
+
+ dpif_sflow_clear(ds);
+ HMAP_FOR_EACH_SAFE (dsp, next, hmap_node, &ds->ports) {
+ dpif_sflow_del_port__(ds, dsp);
+ }
+ hmap_destroy(&ds->ports);
+ free(ds);
+ }
+}
+
+static void
+dpif_sflow_add_poller(struct dpif_sflow *ds,
+ struct dpif_sflow_port *dsp, uint16_t odp_port)
+{
+ SFLPoller *poller = sfl_agent_addPoller(ds->sflow_agent, &dsp->dsi, ds,
+ sflow_agent_get_counters);
+ sfl_poller_set_sFlowCpInterval(poller, ds->options->polling_interval);
+ sfl_poller_set_sFlowCpReceiver(poller, RECEIVER_INDEX);
+ sfl_poller_set_bridgePort(poller, odp_port);
+}
+
+static void
+dpif_sflow_add_sampler(struct dpif_sflow *ds, struct dpif_sflow_port *dsp)
+{
+ SFLSampler *sampler = sfl_agent_addSampler(ds->sflow_agent, &dsp->dsi);
+ sfl_sampler_set_sFlowFsPacketSamplingRate(sampler, ds->options->sampling_rate);
+ sfl_sampler_set_sFlowFsMaximumHeaderSize(sampler, ds->options->header_len);
+ sfl_sampler_set_sFlowFsReceiver(sampler, RECEIVER_INDEX);
+}
+
+void
+dpif_sflow_add_port(struct dpif_sflow *ds, uint16_t odp_port,
+ const char *netdev_name)
+{
+ struct dpif_sflow_port *dsp;
+ struct netdev *netdev;
+ uint32_t ifindex;
+ int error;
+
+ dpif_sflow_del_port(ds, odp_port);
+
+ /* Open network device. */
+ error = netdev_open_default(netdev_name, &netdev);
+ if (error) {
+ VLOG_WARN_RL(&rl, "failed to open network device \"%s\": %s",
+ netdev_name, strerror(error));
+ return;
+ }
+
+ /* Add to table of ports. */
+ dsp = xmalloc(sizeof *dsp);
+ dsp->netdev = netdev;
+ ifindex = netdev_get_ifindex(netdev);
+ if (ifindex <= 0) {
+ ifindex = (ds->sflow_agent->subId << 16) + odp_port;
+ }
+ SFL_DS_SET(dsp->dsi, 0, ifindex, 0);
+ dsp->odp_port = odp_port;
+ hmap_insert(&ds->ports, &dsp->hmap_node, hash_int(odp_port, 0));
+
+ /* Add poller and sampler. */
+ if (ds->sflow_agent) {
+ dpif_sflow_add_poller(ds, dsp, odp_port);
+ dpif_sflow_add_sampler(ds, dsp);
+ }
+}
+
+static void
+dpif_sflow_del_port__(struct dpif_sflow *ds, struct dpif_sflow_port *dsp)
+{
+ if (ds->sflow_agent) {
+ sfl_agent_removePoller(ds->sflow_agent, &dsp->dsi);
+ sfl_agent_removeSampler(ds->sflow_agent, &dsp->dsi);
+ }
+ netdev_close(dsp->netdev);
+ hmap_remove(&ds->ports, &dsp->hmap_node);
+ free(dsp);
+}
+
+void
+dpif_sflow_del_port(struct dpif_sflow *ds, uint16_t odp_port)
+{
+ struct dpif_sflow_port *dsp = dpif_sflow_find_port(ds, odp_port);
+ if (dsp) {
+ dpif_sflow_del_port__(ds, dsp);
+ }
+}
+
+void
+dpif_sflow_set_options(struct dpif_sflow *ds,
+ const struct ofproto_sflow_options *options)
+{
+ struct dpif_sflow_port *dsp;
+ bool options_changed;
+ SFLReceiver *receiver;
+ SFLAddress agentIP;
+ time_t now;
+
+ if (sset_is_empty(&options->targets) || !options->sampling_rate) {
+ /* No point in doing any work if there are no targets or nothing to
+ * sample. */
+ dpif_sflow_clear(ds);
+ return;
+ }
+
+ options_changed = (!ds->options
+ || !ofproto_sflow_options_equal(options, ds->options));
+
+ /* Configure collectors if options have changed or if we're shortchanged in
+ * collectors (which indicates that opening one or more of the configured
+ * collectors failed, so that we should retry). */
+ if (options_changed
+ || collectors_count(ds->collectors) < sset_count(&options->targets)) {
+ collectors_destroy(ds->collectors);
+ collectors_create(&options->targets, SFL_DEFAULT_COLLECTOR_PORT,
+ &ds->collectors);
+ if (ds->collectors == NULL) {
+ VLOG_WARN_RL(&rl, "no collectors could be initialized, "
+ "sFlow disabled");
+ dpif_sflow_clear(ds);
+ return;
+ }
+ }
+
+ /* Avoid reconfiguring if options didn't change. */
+ if (!options_changed) {
+ return;
+ }
+ ofproto_sflow_options_destroy(ds->options);
+ ds->options = ofproto_sflow_options_clone(options);
+
+ /* Choose agent IP address. */
+ if (!sflow_choose_agent_address(options->agent_device,
+ options->control_ip, &agentIP)) {
+ dpif_sflow_clear(ds);
+ return;
+ }
+
+ /* Create agent. */
+ VLOG_INFO("creating sFlow agent %d", options->sub_id);
+ if (ds->sflow_agent) {
+ sfl_agent_release(ds->sflow_agent);
+ }
+ ds->sflow_agent = xcalloc(1, sizeof *ds->sflow_agent);
+ now = time_wall();
+ sfl_agent_init(ds->sflow_agent,
+ &agentIP,
+ options->sub_id,
+ now, /* Boot time. */
+ now, /* Current time. */
+ ds, /* Pointer supplied to callbacks. */
+ sflow_agent_alloc_cb,
+ sflow_agent_free_cb,
+ sflow_agent_error_cb,
+ sflow_agent_send_packet_cb);
+
+ receiver = sfl_agent_addReceiver(ds->sflow_agent);
+ sfl_receiver_set_sFlowRcvrOwner(receiver, "Open vSwitch sFlow");
+ sfl_receiver_set_sFlowRcvrTimeout(receiver, 0xffffffff);
+
+ /* Set the sampling_rate down in the datapath. */
+ dpif_set_sflow_probability(ds->dpif,
+ MAX(1, UINT32_MAX / options->sampling_rate));
+
+ /* Add samplers and pollers for the currently known ports. */
+ HMAP_FOR_EACH (dsp, hmap_node, &ds->ports) {
+ dpif_sflow_add_poller(ds, dsp, dsp->odp_port);
+ dpif_sflow_add_sampler(ds, dsp);
+ }
+}
+
+static int
+dpif_sflow_odp_port_to_ifindex(const struct dpif_sflow *ds,
+ uint16_t odp_port)
+{
+ struct dpif_sflow_port *dsp = dpif_sflow_find_port(ds, odp_port);
+ return dsp ? SFL_DS_INDEX(dsp->dsi) : 0;
+}
+
+void
+dpif_sflow_received(struct dpif_sflow *ds, const struct dpif_upcall *upcall,
+ const struct flow *flow)
+{
+ SFL_FLOW_SAMPLE_TYPE fs;
+ SFLFlow_sample_element hdrElem;
+ SFLSampled_header *header;
+ SFLFlow_sample_element switchElem;
+ SFLSampler *sampler;
+ unsigned int left;
+ struct nlattr *a;
+ size_t n_outputs;
+
+ /* Build a flow sample */
+ memset(&fs, 0, sizeof fs);
+ fs.input = dpif_sflow_odp_port_to_ifindex(ds, flow->in_port);
+ fs.output = 0; /* Filled in correctly below. */
+ fs.sample_pool = upcall->sample_pool;
+
+ /* We are going to give it to the sampler that represents this input port.
+ * By implementing "ingress-only" sampling like this we ensure that we
+ * never have to offer the same sample to more than one sampler. */
+ sampler = sfl_agent_getSamplerByIfIndex(ds->sflow_agent, fs.input);
+ if (!sampler) {
+ VLOG_WARN_RL(&rl, "no sampler for input ifIndex (%"PRIu32")",
+ fs.input);
+ return;
+ }
+
+ /* Sampled header. */
+ memset(&hdrElem, 0, sizeof hdrElem);
+ hdrElem.tag = SFLFLOW_HEADER;
+ header = &hdrElem.flowType.header;
+ header->header_protocol = SFLHEADER_ETHERNET_ISO8023;
+ /* The frame_length should include the Ethernet FCS (4 bytes),
+ but it has already been stripped, so we need to add 4 here. */
+ header->frame_length = upcall->packet->size + 4;
+ /* Ethernet FCS stripped off. */
+ header->stripped = 4;
+ header->header_length = MIN(upcall->packet->size,
+ sampler->sFlowFsMaximumHeaderSize);
+ header->header_bytes = upcall->packet->data;
+
+ /* Add extended switch element. */
+ memset(&switchElem, 0, sizeof(switchElem));
+ switchElem.tag = SFLFLOW_EX_SWITCH;
+ switchElem.flowType.sw.src_vlan = vlan_tci_to_vid(flow->vlan_tci);
+ switchElem.flowType.sw.src_priority = vlan_tci_to_pcp(flow->vlan_tci);
+ /* Initialize the output VLAN and priority to be the same as the input,
+ but these fields can be overriden below if affected by an action. */
+ switchElem.flowType.sw.dst_vlan = switchElem.flowType.sw.src_vlan;
+ switchElem.flowType.sw.dst_priority = switchElem.flowType.sw.src_priority;
+
+ /* Figure out the output ports. */
+ n_outputs = 0;
+ NL_ATTR_FOR_EACH_UNSAFE (a, left, upcall->actions, upcall->actions_len) {
+ ovs_be16 tci;
+
+ switch (nl_attr_type(a)) {
+ case ODP_ACTION_ATTR_OUTPUT:
+ fs.output = dpif_sflow_odp_port_to_ifindex(ds, nl_attr_get_u32(a));
+ n_outputs++;
+ break;
+
+ case ODP_ACTION_ATTR_SET_DL_TCI:
+ tci = nl_attr_get_be16(a);
+ switchElem.flowType.sw.dst_vlan = vlan_tci_to_vid(tci);
+ switchElem.flowType.sw.dst_priority = vlan_tci_to_pcp(tci);
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ /* Set output port, as defined by http://www.sflow.org/sflow_version_5.txt
+ (search for "Input/output port information"). */
+ if (!n_outputs) {
+ /* This value indicates that the packet was dropped for an unknown
+ * reason. */
+ fs.output = 0x40000000 | 256;
+ } else if (n_outputs > 1 || !fs.output) {
+ /* Setting the high bit means "multiple output ports". */
+ fs.output = 0x80000000 | n_outputs;
+ }
+
+ /* Submit the flow sample to be encoded into the next datagram. */
+ SFLADD_ELEMENT(&fs, &hdrElem);
+ SFLADD_ELEMENT(&fs, &switchElem);
+ sfl_sampler_writeFlowSample(sampler, &fs);
+}
+
+void
+dpif_sflow_run(struct dpif_sflow *ds)
+{
+ if (dpif_sflow_is_enabled(ds)) {
+ time_t now = time_now();
+ if (now >= ds->next_tick) {
+ sfl_agent_tick(ds->sflow_agent, time_wall());
+ ds->next_tick = now + 1;
+ }
+ }
+}
+
+void
+dpif_sflow_wait(struct dpif_sflow *ds)
+{
+ if (dpif_sflow_is_enabled(ds)) {
+ poll_timer_wait_until(ds->next_tick * 1000LL);
+ }
+}
--- /dev/null
+/*
+ * Copyright (c) 2009, 2010 InMon Corp.
+ * Copyright (c) 2009 Nicira Networks.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef OFPROTO_DPIF_SFLOW_H
+#define OFPROTO_DPIF_SFLOW_H 1
+
+#include <stdint.h>
+#include "svec.h"
+
+struct dpif;
+struct dpif_upcall;
+struct flow;
+struct ofproto_sflow_options;
+
+struct dpif_sflow *dpif_sflow_create(struct dpif *);
+void dpif_sflow_destroy(struct dpif_sflow *);
+void dpif_sflow_set_options(struct dpif_sflow *,
+ const struct ofproto_sflow_options *);
+void dpif_sflow_clear(struct dpif_sflow *);
+bool dpif_sflow_is_enabled(const struct dpif_sflow *);
+
+void dpif_sflow_add_port(struct dpif_sflow *, uint16_t odp_port,
+ const char *netdev_name);
+void dpif_sflow_del_port(struct dpif_sflow *, uint16_t odp_port);
+
+void dpif_sflow_run(struct dpif_sflow *);
+void dpif_sflow_wait(struct dpif_sflow *);
+
+void dpif_sflow_received(struct dpif_sflow *, const struct dpif_upcall *,
+ const struct flow *);
+
+#endif /* ofproto/ofproto-dpif-sflow.h */
#include "ofp-util.h"
#include "ofpbuf.h"
#include "ofp-print.h"
-#include "ofproto-sflow.h"
+#include "ofproto-dpif-sflow.h"
#include "poll-loop.h"
#include "timer.h"
#include "unaligned.h"
/* Bridging. */
struct netflow *netflow;
- struct ofproto_sflow *sflow;
+ struct dpif_sflow *sflow;
struct hmap bundles; /* Contains "struct ofbundle"s. */
struct mac_learning *ml;
struct ofmirror *mirrors[MAX_MIRRORS];
}
netflow_destroy(ofproto->netflow);
- ofproto_sflow_destroy(ofproto->sflow);
+ dpif_sflow_destroy(ofproto->sflow);
hmap_destroy(&ofproto->bundles);
mac_learning_destroy(ofproto->ml);
netflow_run(ofproto->netflow);
}
if (ofproto->sflow) {
- ofproto_sflow_run(ofproto->sflow);
+ dpif_sflow_run(ofproto->sflow);
}
HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
dpif_wait(ofproto->dpif);
dpif_recv_wait(ofproto->dpif);
if (ofproto->sflow) {
- ofproto_sflow_wait(ofproto->sflow);
+ dpif_sflow_wait(ofproto->sflow);
}
if (!tag_set_is_empty(&ofproto->revalidate_set)) {
poll_immediate_wake();
port->tag = tag_create_random();
if (ofproto->sflow) {
- ofproto_sflow_add_port(ofproto->sflow, port->odp_port,
- netdev_get_name(port->up.netdev));
+ dpif_sflow_add_port(ofproto->sflow, port->odp_port,
+ netdev_get_name(port->up.netdev));
}
return 0;
bundle_remove(port_);
set_cfm(port_, NULL);
if (ofproto->sflow) {
- ofproto_sflow_del_port(ofproto->sflow, port->odp_port);
+ dpif_sflow_del_port(ofproto->sflow, port->odp_port);
}
}
const struct ofproto_sflow_options *sflow_options)
{
struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
- struct ofproto_sflow *os = ofproto->sflow;
+ struct dpif_sflow *ds = ofproto->sflow;
if (sflow_options) {
- if (!os) {
+ if (!ds) {
struct ofport_dpif *ofport;
- os = ofproto->sflow = ofproto_sflow_create(ofproto->dpif);
+ ds = ofproto->sflow = dpif_sflow_create(ofproto->dpif);
HMAP_FOR_EACH (ofport, up.hmap_node, &ofproto->up.ports) {
- ofproto_sflow_add_port(os, ofport->odp_port,
- netdev_get_name(ofport->up.netdev));
+ dpif_sflow_add_port(ds, ofport->odp_port,
+ netdev_get_name(ofport->up.netdev));
}
}
- ofproto_sflow_set_options(os, sflow_options);
+ dpif_sflow_set_options(ds, sflow_options);
} else {
- ofproto_sflow_destroy(os);
+ dpif_sflow_destroy(ds);
ofproto->sflow = NULL;
}
return 0;
case DPIF_UC_SAMPLE:
if (ofproto->sflow) {
odp_flow_key_to_flow(upcall->key, upcall->key_len, &flow);
- ofproto_sflow_received(ofproto->sflow, upcall, &flow);
+ dpif_sflow_received(ofproto->sflow, upcall, &flow);
}
ofpbuf_delete(upcall->packet);
break;
+++ /dev/null
-/*
- * Copyright (c) 2009, 2010, 2011 Nicira Networks.
- * Copyright (c) 2009 InMon Corp.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <config.h>
-#include "ofproto-sflow.h"
-#include <inttypes.h>
-#include <stdlib.h>
-#include "collectors.h"
-#include "dpif.h"
-#include "compiler.h"
-#include "hash.h"
-#include "hmap.h"
-#include "netdev.h"
-#include "netlink.h"
-#include "ofpbuf.h"
-#include "ofproto.h"
-#include "packets.h"
-#include "poll-loop.h"
-#include "sflow_api.h"
-#include "socket-util.h"
-#include "timeval.h"
-#include "vlog.h"
-
-VLOG_DEFINE_THIS_MODULE(sflow);
-
-struct ofproto_sflow_port {
- struct hmap_node hmap_node; /* In struct ofproto_sflow's "ports" hmap. */
- struct netdev *netdev; /* Underlying network device, for stats. */
- SFLDataSource_instance dsi; /* sFlow library's notion of port number. */
- uint16_t odp_port; /* ODP port number. */
-};
-
-struct ofproto_sflow {
- struct ofproto *ofproto;
- struct collectors *collectors;
- SFLAgent *sflow_agent;
- struct ofproto_sflow_options *options;
- struct dpif *dpif;
- time_t next_tick;
- size_t n_flood, n_all;
- struct hmap ports; /* Contains "struct ofproto_sflow_port"s. */
-};
-
-static void ofproto_sflow_del_port__(struct ofproto_sflow *,
- struct ofproto_sflow_port *);
-
-#define RECEIVER_INDEX 1
-
-static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
-
-static bool
-nullable_string_is_equal(const char *a, const char *b)
-{
- return a ? b && !strcmp(a, b) : !b;
-}
-
-static bool
-ofproto_sflow_options_equal(const struct ofproto_sflow_options *a,
- const struct ofproto_sflow_options *b)
-{
- return (sset_equals(&a->targets, &b->targets)
- && a->sampling_rate == b->sampling_rate
- && a->polling_interval == b->polling_interval
- && a->header_len == b->header_len
- && a->sub_id == b->sub_id
- && nullable_string_is_equal(a->agent_device, b->agent_device)
- && nullable_string_is_equal(a->control_ip, b->control_ip));
-}
-
-static struct ofproto_sflow_options *
-ofproto_sflow_options_clone(const struct ofproto_sflow_options *old)
-{
- struct ofproto_sflow_options *new = xmemdup(old, sizeof *old);
- sset_clone(&new->targets, &old->targets);
- new->agent_device = old->agent_device ? xstrdup(old->agent_device) : NULL;
- new->control_ip = old->control_ip ? xstrdup(old->control_ip) : NULL;
- return new;
-}
-
-static void
-ofproto_sflow_options_destroy(struct ofproto_sflow_options *options)
-{
- if (options) {
- sset_destroy(&options->targets);
- free(options->agent_device);
- free(options->control_ip);
- free(options);
- }
-}
-
-/* sFlow library callback to allocate memory. */
-static void *
-sflow_agent_alloc_cb(void *magic OVS_UNUSED, SFLAgent *agent OVS_UNUSED,
- size_t bytes)
-{
- return calloc(1, bytes);
-}
-
-/* sFlow library callback to free memory. */
-static int
-sflow_agent_free_cb(void *magic OVS_UNUSED, SFLAgent *agent OVS_UNUSED,
- void *obj)
-{
- free(obj);
- return 0;
-}
-
-/* sFlow library callback to report error. */
-static void
-sflow_agent_error_cb(void *magic OVS_UNUSED, SFLAgent *agent OVS_UNUSED,
- char *msg)
-{
- VLOG_WARN("sFlow agent error: %s", msg);
-}
-
-/* sFlow library callback to send datagram. */
-static void
-sflow_agent_send_packet_cb(void *os_, SFLAgent *agent OVS_UNUSED,
- SFLReceiver *receiver OVS_UNUSED, u_char *pkt,
- uint32_t pktLen)
-{
- struct ofproto_sflow *os = os_;
- collectors_send(os->collectors, pkt, pktLen);
-}
-
-static struct ofproto_sflow_port *
-ofproto_sflow_find_port(const struct ofproto_sflow *os, uint16_t odp_port)
-{
- struct ofproto_sflow_port *osp;
-
- HMAP_FOR_EACH_IN_BUCKET (osp, hmap_node,
- hash_int(odp_port, 0), &os->ports) {
- if (osp->odp_port == odp_port) {
- return osp;
- }
- }
- return NULL;
-}
-
-static void
-sflow_agent_get_counters(void *os_, SFLPoller *poller,
- SFL_COUNTERS_SAMPLE_TYPE *cs)
-{
- struct ofproto_sflow *os = os_;
- SFLCounters_sample_element elem;
- struct ofproto_sflow_port *osp;
- SFLIf_counters *counters;
- struct netdev_stats stats;
- enum netdev_flags flags;
- uint32_t current;
-
- osp = ofproto_sflow_find_port(os, poller->bridgePort);
- if (!osp) {
- return;
- }
-
- elem.tag = SFLCOUNTERS_GENERIC;
- counters = &elem.counterBlock.generic;
- counters->ifIndex = SFL_DS_INDEX(poller->dsi);
- counters->ifType = 6;
- if (!netdev_get_features(osp->netdev, ¤t, NULL, NULL, NULL)) {
- /* The values of ifDirection come from MAU MIB (RFC 2668): 0 = unknown,
- 1 = full-duplex, 2 = half-duplex, 3 = in, 4=out */
- counters->ifSpeed = netdev_features_to_bps(current);
- counters->ifDirection = (netdev_features_is_full_duplex(current)
- ? 1 : 2);
- } else {
- counters->ifSpeed = 100000000;
- counters->ifDirection = 0;
- }
- if (!netdev_get_flags(osp->netdev, &flags) && flags & NETDEV_UP) {
- counters->ifStatus = 1; /* ifAdminStatus up. */
- if (netdev_get_carrier(osp->netdev)) {
- counters->ifStatus |= 2; /* ifOperStatus us. */
- }
- } else {
- counters->ifStatus = 0; /* Down. */
- }
-
- /* XXX
- 1. Is the multicast counter filled in?
- 2. Does the multicast counter include broadcasts?
- 3. Does the rx_packets counter include multicasts/broadcasts?
- */
- netdev_get_stats(osp->netdev, &stats);
- counters->ifInOctets = stats.rx_bytes;
- counters->ifInUcastPkts = stats.rx_packets;
- counters->ifInMulticastPkts = stats.multicast;
- counters->ifInBroadcastPkts = -1;
- counters->ifInDiscards = stats.rx_dropped;
- counters->ifInErrors = stats.rx_errors;
- counters->ifInUnknownProtos = -1;
- counters->ifOutOctets = stats.tx_bytes;
- counters->ifOutUcastPkts = stats.tx_packets;
- counters->ifOutMulticastPkts = -1;
- counters->ifOutBroadcastPkts = -1;
- counters->ifOutDiscards = stats.tx_dropped;
- counters->ifOutErrors = stats.tx_errors;
- counters->ifPromiscuousMode = 0;
-
- SFLADD_ELEMENT(cs, &elem);
- sfl_poller_writeCountersSample(poller, cs);
-}
-
-/* Obtains an address to use for the local sFlow agent and stores it into
- * '*agent_addr'. Returns true if successful, false on failure.
- *
- * The sFlow agent address should be a local IP address that is persistent and
- * reachable over the network, if possible. The IP address associated with
- * 'agent_device' is used if it has one, and otherwise 'control_ip', the IP
- * address used to talk to the controller. */
-static bool
-sflow_choose_agent_address(const char *agent_device, const char *control_ip,
- SFLAddress *agent_addr)
-{
- struct in_addr in4;
-
- memset(agent_addr, 0, sizeof *agent_addr);
- agent_addr->type = SFLADDRESSTYPE_IP_V4;
-
- if (agent_device) {
- struct netdev *netdev;
-
- if (!netdev_open_default(agent_device, &netdev)) {
- int error = netdev_get_in4(netdev, &in4, NULL);
- netdev_close(netdev);
- if (!error) {
- goto success;
- }
- }
- }
-
- if (control_ip && !lookup_ip(control_ip, &in4)) {
- goto success;
- }
-
- VLOG_ERR("could not determine IP address for sFlow agent");
- return false;
-
-success:
- agent_addr->address.ip_v4.addr = (OVS_FORCE uint32_t) in4.s_addr;
- return true;
-}
-
-void
-ofproto_sflow_clear(struct ofproto_sflow *os)
-{
- if (os->sflow_agent) {
- sfl_agent_release(os->sflow_agent);
- os->sflow_agent = NULL;
- }
- collectors_destroy(os->collectors);
- os->collectors = NULL;
- ofproto_sflow_options_destroy(os->options);
- os->options = NULL;
-
- /* Turn off sampling to save CPU cycles. */
- dpif_set_sflow_probability(os->dpif, 0);
-}
-
-bool
-ofproto_sflow_is_enabled(const struct ofproto_sflow *os)
-{
- return os->collectors != NULL;
-}
-
-struct ofproto_sflow *
-ofproto_sflow_create(struct dpif *dpif)
-{
- struct ofproto_sflow *os;
-
- os = xcalloc(1, sizeof *os);
- os->dpif = dpif;
- os->next_tick = time_now() + 1;
- hmap_init(&os->ports);
- return os;
-}
-
-void
-ofproto_sflow_destroy(struct ofproto_sflow *os)
-{
- if (os) {
- struct ofproto_sflow_port *osp, *next;
-
- ofproto_sflow_clear(os);
- HMAP_FOR_EACH_SAFE (osp, next, hmap_node, &os->ports) {
- ofproto_sflow_del_port__(os, osp);
- }
- hmap_destroy(&os->ports);
- free(os);
- }
-}
-
-static void
-ofproto_sflow_add_poller(struct ofproto_sflow *os,
- struct ofproto_sflow_port *osp, uint16_t odp_port)
-{
- SFLPoller *poller = sfl_agent_addPoller(os->sflow_agent, &osp->dsi, os,
- sflow_agent_get_counters);
- sfl_poller_set_sFlowCpInterval(poller, os->options->polling_interval);
- sfl_poller_set_sFlowCpReceiver(poller, RECEIVER_INDEX);
- sfl_poller_set_bridgePort(poller, odp_port);
-}
-
-static void
-ofproto_sflow_add_sampler(struct ofproto_sflow *os,
- struct ofproto_sflow_port *osp)
-{
- SFLSampler *sampler = sfl_agent_addSampler(os->sflow_agent, &osp->dsi);
- sfl_sampler_set_sFlowFsPacketSamplingRate(sampler, os->options->sampling_rate);
- sfl_sampler_set_sFlowFsMaximumHeaderSize(sampler, os->options->header_len);
- sfl_sampler_set_sFlowFsReceiver(sampler, RECEIVER_INDEX);
-}
-
-void
-ofproto_sflow_add_port(struct ofproto_sflow *os, uint16_t odp_port,
- const char *netdev_name)
-{
- struct ofproto_sflow_port *osp;
- struct netdev *netdev;
- uint32_t ifindex;
- int error;
-
- ofproto_sflow_del_port(os, odp_port);
-
- /* Open network device. */
- error = netdev_open_default(netdev_name, &netdev);
- if (error) {
- VLOG_WARN_RL(&rl, "failed to open network device \"%s\": %s",
- netdev_name, strerror(error));
- return;
- }
-
- /* Add to table of ports. */
- osp = xmalloc(sizeof *osp);
- osp->netdev = netdev;
- ifindex = netdev_get_ifindex(netdev);
- if (ifindex <= 0) {
- ifindex = (os->sflow_agent->subId << 16) + odp_port;
- }
- SFL_DS_SET(osp->dsi, 0, ifindex, 0);
- osp->odp_port = odp_port;
- hmap_insert(&os->ports, &osp->hmap_node, hash_int(odp_port, 0));
-
- /* Add poller and sampler. */
- if (os->sflow_agent) {
- ofproto_sflow_add_poller(os, osp, odp_port);
- ofproto_sflow_add_sampler(os, osp);
- }
-}
-
-static void
-ofproto_sflow_del_port__(struct ofproto_sflow *os,
- struct ofproto_sflow_port *osp)
-{
- if (os->sflow_agent) {
- sfl_agent_removePoller(os->sflow_agent, &osp->dsi);
- sfl_agent_removeSampler(os->sflow_agent, &osp->dsi);
- }
- netdev_close(osp->netdev);
- hmap_remove(&os->ports, &osp->hmap_node);
- free(osp);
-}
-
-void
-ofproto_sflow_del_port(struct ofproto_sflow *os, uint16_t odp_port)
-{
- struct ofproto_sflow_port *osp = ofproto_sflow_find_port(os, odp_port);
- if (osp) {
- ofproto_sflow_del_port__(os, osp);
- }
-}
-
-void
-ofproto_sflow_set_options(struct ofproto_sflow *os,
- const struct ofproto_sflow_options *options)
-{
- struct ofproto_sflow_port *osp;
- bool options_changed;
- SFLReceiver *receiver;
- SFLAddress agentIP;
- time_t now;
-
- if (sset_is_empty(&options->targets) || !options->sampling_rate) {
- /* No point in doing any work if there are no targets or nothing to
- * sample. */
- ofproto_sflow_clear(os);
- return;
- }
-
- options_changed = (!os->options
- || !ofproto_sflow_options_equal(options, os->options));
-
- /* Configure collectors if options have changed or if we're shortchanged in
- * collectors (which indicates that opening one or more of the configured
- * collectors failed, so that we should retry). */
- if (options_changed
- || collectors_count(os->collectors) < sset_count(&options->targets)) {
- collectors_destroy(os->collectors);
- collectors_create(&options->targets, SFL_DEFAULT_COLLECTOR_PORT,
- &os->collectors);
- if (os->collectors == NULL) {
- VLOG_WARN_RL(&rl, "no collectors could be initialized, "
- "sFlow disabled");
- ofproto_sflow_clear(os);
- return;
- }
- }
-
- /* Avoid reconfiguring if options didn't change. */
- if (!options_changed) {
- return;
- }
- ofproto_sflow_options_destroy(os->options);
- os->options = ofproto_sflow_options_clone(options);
-
- /* Choose agent IP address. */
- if (!sflow_choose_agent_address(options->agent_device,
- options->control_ip, &agentIP)) {
- ofproto_sflow_clear(os);
- return;
- }
-
- /* Create agent. */
- VLOG_INFO("creating sFlow agent %d", options->sub_id);
- if (os->sflow_agent) {
- sfl_agent_release(os->sflow_agent);
- }
- os->sflow_agent = xcalloc(1, sizeof *os->sflow_agent);
- now = time_wall();
- sfl_agent_init(os->sflow_agent,
- &agentIP,
- options->sub_id,
- now, /* Boot time. */
- now, /* Current time. */
- os, /* Pointer supplied to callbacks. */
- sflow_agent_alloc_cb,
- sflow_agent_free_cb,
- sflow_agent_error_cb,
- sflow_agent_send_packet_cb);
-
- receiver = sfl_agent_addReceiver(os->sflow_agent);
- sfl_receiver_set_sFlowRcvrOwner(receiver, "Open vSwitch sFlow");
- sfl_receiver_set_sFlowRcvrTimeout(receiver, 0xffffffff);
-
- /* Set the sampling_rate down in the datapath. */
- dpif_set_sflow_probability(os->dpif,
- MAX(1, UINT32_MAX / options->sampling_rate));
-
- /* Add samplers and pollers for the currently known ports. */
- HMAP_FOR_EACH (osp, hmap_node, &os->ports) {
- ofproto_sflow_add_poller(os, osp, osp->odp_port);
- ofproto_sflow_add_sampler(os, osp);
- }
-}
-
-static int
-ofproto_sflow_odp_port_to_ifindex(const struct ofproto_sflow *os,
- uint16_t odp_port)
-{
- struct ofproto_sflow_port *osp = ofproto_sflow_find_port(os, odp_port);
- return osp ? SFL_DS_INDEX(osp->dsi) : 0;
-}
-
-void
-ofproto_sflow_received(struct ofproto_sflow *os,
- const struct dpif_upcall *upcall,
- const struct flow *flow)
-{
- SFL_FLOW_SAMPLE_TYPE fs;
- SFLFlow_sample_element hdrElem;
- SFLSampled_header *header;
- SFLFlow_sample_element switchElem;
- SFLSampler *sampler;
- unsigned int left;
- struct nlattr *a;
- size_t n_outputs;
-
- /* Build a flow sample */
- memset(&fs, 0, sizeof fs);
- fs.input = ofproto_sflow_odp_port_to_ifindex(os, flow->in_port);
- fs.output = 0; /* Filled in correctly below. */
- fs.sample_pool = upcall->sample_pool;
-
- /* We are going to give it to the sampler that represents this input port.
- * By implementing "ingress-only" sampling like this we ensure that we
- * never have to offer the same sample to more than one sampler. */
- sampler = sfl_agent_getSamplerByIfIndex(os->sflow_agent, fs.input);
- if (!sampler) {
- VLOG_WARN_RL(&rl, "no sampler for input ifIndex (%"PRIu32")",
- fs.input);
- return;
- }
-
- /* Sampled header. */
- memset(&hdrElem, 0, sizeof hdrElem);
- hdrElem.tag = SFLFLOW_HEADER;
- header = &hdrElem.flowType.header;
- header->header_protocol = SFLHEADER_ETHERNET_ISO8023;
- /* The frame_length should include the Ethernet FCS (4 bytes),
- but it has already been stripped, so we need to add 4 here. */
- header->frame_length = upcall->packet->size + 4;
- /* Ethernet FCS stripped off. */
- header->stripped = 4;
- header->header_length = MIN(upcall->packet->size,
- sampler->sFlowFsMaximumHeaderSize);
- header->header_bytes = upcall->packet->data;
-
- /* Add extended switch element. */
- memset(&switchElem, 0, sizeof(switchElem));
- switchElem.tag = SFLFLOW_EX_SWITCH;
- switchElem.flowType.sw.src_vlan = vlan_tci_to_vid(flow->vlan_tci);
- switchElem.flowType.sw.src_priority = vlan_tci_to_pcp(flow->vlan_tci);
- /* Initialize the output VLAN and priority to be the same as the input,
- but these fields can be overriden below if affected by an action. */
- switchElem.flowType.sw.dst_vlan = switchElem.flowType.sw.src_vlan;
- switchElem.flowType.sw.dst_priority = switchElem.flowType.sw.src_priority;
-
- /* Figure out the output ports. */
- n_outputs = 0;
- NL_ATTR_FOR_EACH_UNSAFE (a, left, upcall->actions, upcall->actions_len) {
- ovs_be16 tci;
-
- switch (nl_attr_type(a)) {
- case ODP_ACTION_ATTR_OUTPUT:
- fs.output = ofproto_sflow_odp_port_to_ifindex(os,
- nl_attr_get_u32(a));
- n_outputs++;
- break;
-
- case ODP_ACTION_ATTR_SET_DL_TCI:
- tci = nl_attr_get_be16(a);
- switchElem.flowType.sw.dst_vlan = vlan_tci_to_vid(tci);
- switchElem.flowType.sw.dst_priority = vlan_tci_to_pcp(tci);
- break;
-
- default:
- break;
- }
- }
-
- /* Set output port, as defined by http://www.sflow.org/sflow_version_5.txt
- (search for "Input/output port information"). */
- if (!n_outputs) {
- /* This value indicates that the packet was dropped for an unknown
- * reason. */
- fs.output = 0x40000000 | 256;
- } else if (n_outputs > 1 || !fs.output) {
- /* Setting the high bit means "multiple output ports". */
- fs.output = 0x80000000 | n_outputs;
- }
-
- /* Submit the flow sample to be encoded into the next datagram. */
- SFLADD_ELEMENT(&fs, &hdrElem);
- SFLADD_ELEMENT(&fs, &switchElem);
- sfl_sampler_writeFlowSample(sampler, &fs);
-}
-
-void
-ofproto_sflow_run(struct ofproto_sflow *os)
-{
- if (ofproto_sflow_is_enabled(os)) {
- time_t now = time_now();
- if (now >= os->next_tick) {
- sfl_agent_tick(os->sflow_agent, time_wall());
- os->next_tick = now + 1;
- }
- }
-}
-
-void
-ofproto_sflow_wait(struct ofproto_sflow *os)
-{
- if (ofproto_sflow_is_enabled(os)) {
- poll_timer_wait_until(os->next_tick * 1000LL);
- }
-}
+++ /dev/null
-/*
- * Copyright (c) 2009, 2010 InMon Corp.
- * Copyright (c) 2009 Nicira Networks.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef OFPROTO_SFLOW_H
-#define OFPROTO_SFLOW_H 1
-
-#include <stdint.h>
-#include "svec.h"
-
-struct dpif;
-struct dpif_upcall;
-struct flow;
-struct ofproto_sflow_options;
-
-struct ofproto_sflow *ofproto_sflow_create(struct dpif *);
-void ofproto_sflow_destroy(struct ofproto_sflow *);
-void ofproto_sflow_set_options(struct ofproto_sflow *,
- const struct ofproto_sflow_options *);
-void ofproto_sflow_clear(struct ofproto_sflow *);
-bool ofproto_sflow_is_enabled(const struct ofproto_sflow *);
-
-void ofproto_sflow_add_port(struct ofproto_sflow *, uint16_t odp_port,
- const char *netdev_name);
-void ofproto_sflow_del_port(struct ofproto_sflow *, uint16_t odp_port);
-
-void ofproto_sflow_run(struct ofproto_sflow *);
-void ofproto_sflow_wait(struct ofproto_sflow *);
-
-void ofproto_sflow_received(struct ofproto_sflow *,
- const struct dpif_upcall *, const struct flow *);
-
-#endif /* ofproto/ofproto-sflow.h */
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