/*
- * Copyright (c) 2008, 2009, 2010 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira Networks.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include <time.h>
#include "byte-order.h"
+#include "classifier.h"
#include "flow.h"
#include "hmap.h"
#include "mac-learning.h"
#include "ofpbuf.h"
+#include "ofp-errors.h"
#include "ofp-parse.h"
#include "ofp-print.h"
#include "ofp-util.h"
#include "openflow/openflow.h"
#include "poll-loop.h"
-#include "queue.h"
#include "rconn.h"
#include "shash.h"
#include "timeval.h"
#include "vconn.h"
#include "vlog.h"
-VLOG_DEFINE_THIS_MODULE(learning_switch)
+VLOG_DEFINE_THIS_MODULE(learning_switch);
struct lswitch_port {
struct hmap_node hmap_node; /* Hash node for port number. */
unsigned long long int datapath_id;
time_t last_features_request;
struct mac_learning *ml; /* NULL to act as hub instead of switch. */
- uint32_t wildcards; /* Wildcards to apply to flows. */
+ struct flow_wildcards wc; /* Wildcards to apply to flows. */
bool action_normal; /* Use OFPP_NORMAL? */
/* Queue distribution. */
static void queue_tx(struct lswitch *, struct rconn *, struct ofpbuf *);
static void send_features_request(struct lswitch *, struct rconn *);
-typedef void packet_handler_func(struct lswitch *, struct rconn *, void *);
-static packet_handler_func process_switch_features;
-static packet_handler_func process_packet_in;
-static packet_handler_func process_echo_request;
+static void process_switch_features(struct lswitch *,
+ struct ofp_switch_features *);
+static void process_packet_in(struct lswitch *, struct rconn *,
+ const struct ofp_packet_in *);
+static void process_echo_request(struct lswitch *, struct rconn *,
+ const struct ofp_header *);
/* Creates and returns a new learning switch whose configuration is given by
* 'cfg'.
struct lswitch *
lswitch_create(struct rconn *rconn, const struct lswitch_config *cfg)
{
- const struct ofpbuf *b;
struct lswitch *sw;
sw = xzalloc(sizeof *sw);
sw->max_idle = cfg->max_idle;
sw->datapath_id = 0;
sw->last_features_request = time_now() - 1;
- sw->ml = cfg->mode == LSW_LEARN ? mac_learning_create() : NULL;
+ sw->ml = (cfg->mode == LSW_LEARN
+ ? mac_learning_create(MAC_ENTRY_DEFAULT_IDLE_TIME)
+ : NULL);
sw->action_normal = cfg->mode == LSW_NORMAL;
- if (cfg->exact_flows) {
- /* Exact match. */
- sw->wildcards = 0;
- } else {
- /* We cannot wildcard all fields.
- * We need in_port to detect moves.
- * We need both SA and DA to do learning. */
- sw->wildcards = (OFPFW_DL_TYPE | OFPFW_NW_SRC_MASK | OFPFW_NW_DST_MASK
- | OFPFW_NW_PROTO | OFPFW_TP_SRC | OFPFW_TP_DST);
+
+ flow_wildcards_init_exact(&sw->wc);
+ if (cfg->wildcards) {
+ uint32_t ofpfw;
+
+ if (cfg->wildcards == UINT32_MAX) {
+ /* Try to wildcard as many fields as possible, but we cannot
+ * wildcard all fields. We need in_port to detect moves. We need
+ * Ethernet source and dest and VLAN VID to do L2 learning. */
+ ofpfw = (OFPFW_DL_TYPE | OFPFW_DL_VLAN_PCP
+ | OFPFW_NW_SRC_ALL | OFPFW_NW_DST_ALL
+ | OFPFW_NW_TOS | OFPFW_NW_PROTO
+ | OFPFW_TP_SRC | OFPFW_TP_DST);
+ } else {
+ ofpfw = cfg->wildcards;
+ }
+
+ ofputil_wildcard_from_openflow(ofpfw, &sw->wc);
}
sw->default_queue = cfg->default_queue;
sw->queued = rconn_packet_counter_create();
send_features_request(sw, rconn);
- for (b = cfg->default_flows; b; b = b->next) {
- queue_tx(sw, rconn, ofpbuf_clone(b));
+ if (cfg->default_flows) {
+ const struct ofpbuf *b;
+
+ LIST_FOR_EACH (b, list_node, cfg->default_flows) {
+ struct ofpbuf *copy = ofpbuf_clone(b);
+ int error = rconn_send(rconn, copy, NULL);
+ if (error) {
+ VLOG_INFO_RL(&rl, "%s: failed to queue default flows (%s)",
+ rconn_get_name(rconn), strerror(error));
+ ofpbuf_delete(copy);
+ break;
+ }
+ }
}
return sw;
lswitch_process_packet(struct lswitch *sw, struct rconn *rconn,
const struct ofpbuf *msg)
{
- struct processor {
- uint8_t type;
- size_t min_size;
- packet_handler_func *handler;
- };
- static const struct processor processors[] = {
- {
- OFPT_ECHO_REQUEST,
- sizeof(struct ofp_header),
- process_echo_request
- },
- {
- OFPT_FEATURES_REPLY,
- sizeof(struct ofp_switch_features),
- process_switch_features
- },
- {
- OFPT_PACKET_IN,
- offsetof(struct ofp_packet_in, data),
- process_packet_in
- },
- {
- OFPT_FLOW_REMOVED,
- sizeof(struct ofp_flow_removed),
- NULL
- },
- };
- const size_t n_processors = ARRAY_SIZE(processors);
- const struct processor *p;
- struct ofp_header *oh;
-
- oh = msg->data;
+ const struct ofp_header *oh = msg->data;
+ const struct ofputil_msg_type *type;
+
if (sw->datapath_id == 0
&& oh->type != OFPT_ECHO_REQUEST
&& oh->type != OFPT_FEATURES_REPLY) {
return;
}
- for (p = processors; p < &processors[n_processors]; p++) {
- if (oh->type == p->type) {
- if (msg->size < p->min_size) {
- VLOG_WARN_RL(&rl, "%016llx: %s: too short (%zu bytes) for "
- "type %"PRIu8" (min %zu)", sw->datapath_id,
- rconn_get_name(rconn), msg->size, oh->type,
- p->min_size);
- return;
- }
- if (p->handler) {
- (p->handler)(sw, rconn, msg->data);
- }
- return;
+ ofputil_decode_msg_type(oh, &type);
+ switch (ofputil_msg_type_code(type)) {
+ case OFPUTIL_OFPT_ECHO_REQUEST:
+ process_echo_request(sw, rconn, msg->data);
+ break;
+
+ case OFPUTIL_OFPT_FEATURES_REPLY:
+ process_switch_features(sw, msg->data);
+ break;
+
+ case OFPUTIL_OFPT_PACKET_IN:
+ process_packet_in(sw, rconn, msg->data);
+ break;
+
+ case OFPUTIL_OFPT_FLOW_REMOVED:
+ /* Nothing to do. */
+ break;
+
+ case OFPUTIL_MSG_INVALID:
+ case OFPUTIL_OFPT_HELLO:
+ case OFPUTIL_OFPT_ERROR:
+ case OFPUTIL_OFPT_ECHO_REPLY:
+ case OFPUTIL_OFPT_FEATURES_REQUEST:
+ case OFPUTIL_OFPT_GET_CONFIG_REQUEST:
+ case OFPUTIL_OFPT_GET_CONFIG_REPLY:
+ case OFPUTIL_OFPT_SET_CONFIG:
+ case OFPUTIL_OFPT_PORT_STATUS:
+ case OFPUTIL_OFPT_PACKET_OUT:
+ case OFPUTIL_OFPT_FLOW_MOD:
+ case OFPUTIL_OFPT_PORT_MOD:
+ case OFPUTIL_OFPT_BARRIER_REQUEST:
+ case OFPUTIL_OFPT_BARRIER_REPLY:
+ case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REQUEST:
+ case OFPUTIL_OFPT_QUEUE_GET_CONFIG_REPLY:
+ case OFPUTIL_OFPST_DESC_REQUEST:
+ case OFPUTIL_OFPST_FLOW_REQUEST:
+ case OFPUTIL_OFPST_AGGREGATE_REQUEST:
+ case OFPUTIL_OFPST_TABLE_REQUEST:
+ case OFPUTIL_OFPST_PORT_REQUEST:
+ case OFPUTIL_OFPST_QUEUE_REQUEST:
+ case OFPUTIL_OFPST_DESC_REPLY:
+ case OFPUTIL_OFPST_FLOW_REPLY:
+ case OFPUTIL_OFPST_QUEUE_REPLY:
+ case OFPUTIL_OFPST_PORT_REPLY:
+ case OFPUTIL_OFPST_TABLE_REPLY:
+ case OFPUTIL_OFPST_AGGREGATE_REPLY:
+ case OFPUTIL_NXT_ROLE_REQUEST:
+ case OFPUTIL_NXT_ROLE_REPLY:
+ case OFPUTIL_NXT_FLOW_MOD_TABLE_ID:
+ case OFPUTIL_NXT_SET_FLOW_FORMAT:
+ case OFPUTIL_NXT_SET_PACKET_IN_FORMAT:
+ case OFPUTIL_NXT_PACKET_IN:
+ case OFPUTIL_NXT_FLOW_MOD:
+ case OFPUTIL_NXT_FLOW_REMOVED:
+ case OFPUTIL_NXT_FLOW_AGE:
+ case OFPUTIL_NXT_SET_ASYNC_CONFIG:
+ case OFPUTIL_NXST_FLOW_REQUEST:
+ case OFPUTIL_NXST_AGGREGATE_REQUEST:
+ case OFPUTIL_NXST_FLOW_REPLY:
+ case OFPUTIL_NXST_AGGREGATE_REPLY:
+ default:
+ if (VLOG_IS_DBG_ENABLED()) {
+ char *s = ofp_to_string(msg->data, msg->size, 2);
+ VLOG_DBG_RL(&rl, "%016llx: OpenFlow packet ignored: %s",
+ sw->datapath_id, s);
+ free(s);
}
}
- if (VLOG_IS_DBG_ENABLED()) {
- char *s = ofp_to_string(msg->data, msg->size, 2);
- VLOG_DBG_RL(&rl, "%016llx: OpenFlow packet ignored: %s",
- sw->datapath_id, s);
- free(s);
- }
}
\f
static void
}
static void
-process_switch_features(struct lswitch *sw, struct rconn *rconn OVS_UNUSED,
- void *osf_)
+process_switch_features(struct lswitch *sw, struct ofp_switch_features *osf)
{
- struct ofp_switch_features *osf = osf_;
size_t n_ports;
size_t i;
- if (check_ofp_message_array(&osf->header, OFPT_FEATURES_REPLY,
- sizeof *osf, sizeof *osf->ports, &n_ports)) {
- return;
- }
-
sw->datapath_id = ntohll(osf->datapath_id);
+ n_ports = (ntohs(osf->header.length) - sizeof *osf) / sizeof *osf->ports;
for (i = 0; i < n_ports; i++) {
struct ofp_phy_port *opp = &osf->ports[i];
struct lswitch_port *lp;
opp->name[OFP_MAX_PORT_NAME_LEN - 1] = '\0';
- lp = shash_find_data(&sw->queue_names, (char *) opp->name);
+ lp = shash_find_data(&sw->queue_names, opp->name);
if (lp && hmap_node_is_null(&lp->hmap_node)) {
lp->port_no = ntohs(opp->port_no);
hmap_insert(&sw->queue_numbers, &lp->hmap_node,
uint16_t out_port;
/* Learn the source MAC. */
- if (sw->ml) {
- if (mac_learning_learn(sw->ml, flow->dl_src, 0, flow->in_port,
- GRAT_ARP_LOCK_NONE)) {
+ if (mac_learning_may_learn(sw->ml, flow->dl_src, 0)) {
+ struct mac_entry *mac = mac_learning_insert(sw->ml, flow->dl_src, 0);
+ if (mac_entry_is_new(mac) || mac->port.i != flow->in_port) {
VLOG_DBG_RL(&rl, "%016llx: learned that "ETH_ADDR_FMT" is on "
"port %"PRIu16, sw->datapath_id,
ETH_ADDR_ARGS(flow->dl_src), flow->in_port);
+
+ mac->port.i = flow->in_port;
+ mac_learning_changed(sw->ml, mac);
}
}
out_port = OFPP_FLOOD;
if (sw->ml) {
- int learned_port = mac_learning_lookup(sw->ml, flow->dl_dst, 0, NULL);
- if (learned_port >= 0) {
- out_port = learned_port;
+ struct mac_entry *mac;
+
+ mac = mac_learning_lookup(sw->ml, flow->dl_dst, 0, NULL);
+ if (mac) {
+ out_port = mac->port.i;
if (out_port == flow->in_port) {
/* Don't send a packet back out its input port. */
return OFPP_NONE;
}
static void
-process_packet_in(struct lswitch *sw, struct rconn *rconn, void *opi_)
+process_packet_in(struct lswitch *sw, struct rconn *rconn,
+ const struct ofp_packet_in *opi)
{
- struct ofp_packet_in *opi = opi_;
uint16_t in_port = ntohs(opi->in_port);
uint32_t queue_id;
uint16_t out_port;
struct ofp_action_header actions[2];
size_t actions_len;
+ struct ofputil_packet_out po;
+
size_t pkt_ofs, pkt_len;
struct ofpbuf pkt;
struct flow flow;
/* Extract flow data from 'opi' into 'flow'. */
pkt_ofs = offsetof(struct ofp_packet_in, data);
pkt_len = ntohs(opi->header.length) - pkt_ofs;
- pkt.data = opi->data;
- pkt.size = pkt_len;
- flow_extract(&pkt, 0, in_port, &flow);
+ ofpbuf_use_const(&pkt, opi->data, pkt_len);
+ flow_extract(&pkt, 0, 0, in_port, &flow);
/* Choose output port. */
out_port = lswitch_choose_destination(sw, &flow);
}
assert(actions_len <= sizeof actions);
+ /* Prepare packet_out in case we need one. */
+ po.buffer_id = ntohl(opi->buffer_id);
+ if (po.buffer_id == UINT32_MAX) {
+ po.packet = pkt.data;
+ po.packet_len = pkt.size;
+ } else {
+ po.packet = NULL;
+ po.packet_len = 0;
+ }
+ po.in_port = in_port;
+ po.actions = (union ofp_action *) actions;
+ po.n_actions = actions_len / sizeof *actions;
+
/* Send the packet, and possibly the whole flow, to the output port. */
if (sw->max_idle >= 0 && (!sw->ml || out_port != OFPP_FLOOD)) {
struct ofpbuf *buffer;
- struct ofp_flow_mod *ofm;
+ struct cls_rule rule;
/* The output port is known, or we always flood everything, so add a
* new flow. */
- buffer = make_add_flow(&flow, ntohl(opi->buffer_id),
+ cls_rule_init(&flow, &sw->wc, 0, &rule);
+ buffer = make_add_flow(&rule, ntohl(opi->buffer_id),
sw->max_idle, actions_len);
ofpbuf_put(buffer, actions, actions_len);
- ofm = buffer->data;
- ofm->match.wildcards = htonl(sw->wildcards);
queue_tx(sw, rconn, buffer);
/* If the switch didn't buffer the packet, we need to send a copy. */
if (ntohl(opi->buffer_id) == UINT32_MAX && actions_len > 0) {
- queue_tx(sw, rconn,
- make_packet_out(&pkt, UINT32_MAX, in_port,
- actions, actions_len / sizeof *actions));
+ queue_tx(sw, rconn, ofputil_encode_packet_out(&po));
}
} else {
/* We don't know that MAC, or we don't set up flows. Send along the
* packet without setting up a flow. */
if (ntohl(opi->buffer_id) != UINT32_MAX || actions_len > 0) {
- queue_tx(sw, rconn,
- make_packet_out(&pkt, ntohl(opi->buffer_id), in_port,
- actions, actions_len / sizeof *actions));
+ queue_tx(sw, rconn, ofputil_encode_packet_out(&po));
}
}
}
static void
-process_echo_request(struct lswitch *sw, struct rconn *rconn, void *rq_)
+process_echo_request(struct lswitch *sw, struct rconn *rconn,
+ const struct ofp_header *rq)
{
- struct ofp_header *rq = rq_;
queue_tx(sw, rconn, make_echo_reply(rq));
}
git://git.onelab.eu / sliver-openvswitch.git / blobdiff