mirror of
https://github.com/openvswitch/ovs
synced 2025-10-13 14:07:02 +00:00
cfea354b81
Until now, ovs-vswitchd has been unable to configure IP addresses and routes for bridges whose Bridge records lack a Port and an Interface record for the bridge's local port (e.g. OFPP_LOCAL, the port with the same name as the bridge itself). When such a bridge was reconfigured, ovs-vswitchd would output a log message that worried people. This commit fixes the internal limitation that led to the message being printed. Bug #5385.
3894 lines
121 KiB
C
3894 lines
121 KiB
C
/* Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <config.h>
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#include "bridge.h"
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#include "byte-order.h"
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#include <assert.h>
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#include <errno.h>
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#include <arpa/inet.h>
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#include <ctype.h>
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#include <inttypes.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <openflow/openflow.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <strings.h>
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#include <sys/stat.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "bitmap.h"
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#include "bond.h"
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#include "cfm.h"
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#include "classifier.h"
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#include "coverage.h"
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#include "daemon.h"
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#include "dirs.h"
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#include "dpif.h"
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#include "dynamic-string.h"
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#include "flow.h"
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#include "hash.h"
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#include "hmap.h"
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#include "jsonrpc.h"
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#include "lacp.h"
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#include "list.h"
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#include "mac-learning.h"
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#include "netdev.h"
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#include "netlink.h"
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#include "odp-util.h"
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#include "ofp-print.h"
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#include "ofpbuf.h"
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#include "ofproto/netflow.h"
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#include "ofproto/ofproto.h"
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#include "ovsdb-data.h"
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#include "packets.h"
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#include "poll-loop.h"
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#include "process.h"
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#include "sha1.h"
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#include "shash.h"
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#include "socket-util.h"
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#include "stream-ssl.h"
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#include "sset.h"
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#include "svec.h"
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#include "system-stats.h"
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#include "timeval.h"
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#include "util.h"
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#include "unixctl.h"
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#include "vconn.h"
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#include "vswitchd/vswitch-idl.h"
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#include "xenserver.h"
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#include "vlog.h"
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#include "sflow_api.h"
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VLOG_DEFINE_THIS_MODULE(bridge);
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COVERAGE_DEFINE(bridge_flush);
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COVERAGE_DEFINE(bridge_process_flow);
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COVERAGE_DEFINE(bridge_reconfigure);
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struct dst {
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struct iface *iface;
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uint16_t vlan;
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};
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struct dst_set {
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struct dst builtin[32];
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struct dst *dsts;
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size_t n, allocated;
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};
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static void dst_set_init(struct dst_set *);
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static void dst_set_add(struct dst_set *, const struct dst *);
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static void dst_set_free(struct dst_set *);
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struct iface {
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/* These members are always valid. */
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struct list port_elem; /* Element in struct port's "ifaces" list. */
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struct port *port; /* Containing port. */
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char *name; /* Host network device name. */
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tag_type tag; /* Tag associated with this interface. */
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/* These members are valid only after bridge_reconfigure() causes them to
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* be initialized. */
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struct hmap_node dp_ifidx_node; /* In struct bridge's "ifaces" hmap. */
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int dp_ifidx; /* Index within kernel datapath. */
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struct netdev *netdev; /* Network device. */
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const char *type; /* Usually same as cfg->type. */
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const struct ovsrec_interface *cfg;
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};
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#define MAX_MIRRORS 32
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typedef uint32_t mirror_mask_t;
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#define MIRROR_MASK_C(X) UINT32_C(X)
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BUILD_ASSERT_DECL(sizeof(mirror_mask_t) * CHAR_BIT >= MAX_MIRRORS);
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struct mirror {
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struct bridge *bridge;
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size_t idx;
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char *name;
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struct uuid uuid; /* UUID of this "mirror" record in database. */
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/* Selection criteria. */
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struct sset src_ports; /* Source port names. */
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struct sset dst_ports; /* Destination port names. */
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int *vlans;
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size_t n_vlans;
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/* Output. */
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struct port *out_port;
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int out_vlan;
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};
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#define FLOOD_PORT ((struct port *) 1) /* The 'flood' output port. */
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struct port {
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struct bridge *bridge;
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struct hmap_node hmap_node; /* Element in struct bridge's "ports" hmap. */
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char *name;
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int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */
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unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1.
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* NULL if all VLANs are trunked. */
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const struct ovsrec_port *cfg;
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/* An ordinary bridge port has 1 interface.
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* A bridge port for bonding has at least 2 interfaces. */
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struct list ifaces; /* List of "struct iface"s. */
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struct lacp *lacp; /* NULL if LACP is not enabled. */
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/* Bonding info. */
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struct bond *bond;
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/* Port mirroring info. */
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mirror_mask_t src_mirrors; /* Mirrors triggered when packet received. */
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mirror_mask_t dst_mirrors; /* Mirrors triggered when packet sent. */
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bool is_mirror_output_port; /* Does port mirroring send frames here? */
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};
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struct bridge {
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struct list node; /* Node in global list of bridges. */
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char *name; /* User-specified arbitrary name. */
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struct mac_learning *ml; /* MAC learning table. */
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uint8_t ea[ETH_ADDR_LEN]; /* Bridge Ethernet Address. */
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uint8_t default_ea[ETH_ADDR_LEN]; /* Default MAC. */
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const struct ovsrec_bridge *cfg;
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/* OpenFlow switch processing. */
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struct ofproto *ofproto; /* OpenFlow switch. */
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/* Kernel datapath information. */
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struct dpif *dpif; /* Datapath. */
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struct hmap ifaces; /* "struct iface"s indexed by dp_ifidx. */
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/* Bridge ports. */
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struct hmap ports; /* "struct port"s indexed by name. */
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struct shash iface_by_name; /* "struct iface"s indexed by name. */
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/* Bonding. */
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bool has_bonded_ports;
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/* Flow tracking. */
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bool flush;
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/* Port mirroring. */
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struct mirror *mirrors[MAX_MIRRORS];
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/* Synthetic local port if necessary. */
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struct ovsrec_port synth_local_port;
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struct ovsrec_interface synth_local_iface;
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struct ovsrec_interface *synth_local_ifacep;
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};
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/* List of all bridges. */
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static struct list all_bridges = LIST_INITIALIZER(&all_bridges);
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/* OVSDB IDL used to obtain configuration. */
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static struct ovsdb_idl *idl;
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/* Each time this timer expires, the bridge fetches systems and interface
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* statistics and pushes them into the database. */
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#define STATS_INTERVAL (5 * 1000) /* In milliseconds. */
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static long long int stats_timer = LLONG_MIN;
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/* Stores the time after which rate limited statistics may be written to the
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* database. Only updated when changes to the database require rate limiting.
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*/
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#define DB_LIMIT_INTERVAL (1 * 1000) /* In milliseconds. */
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static long long int db_limiter = LLONG_MIN;
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static struct bridge *bridge_create(const struct ovsrec_bridge *br_cfg);
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static void bridge_destroy(struct bridge *);
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static struct bridge *bridge_lookup(const char *name);
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static unixctl_cb_func bridge_unixctl_dump_flows;
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static unixctl_cb_func bridge_unixctl_reconnect;
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static int bridge_run_one(struct bridge *);
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static size_t bridge_get_controllers(const struct bridge *br,
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struct ovsrec_controller ***controllersp);
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static void bridge_reconfigure_one(struct bridge *);
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static void bridge_reconfigure_remotes(struct bridge *,
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const struct sockaddr_in *managers,
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size_t n_managers);
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static void bridge_get_all_ifaces(const struct bridge *, struct shash *ifaces);
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static void bridge_fetch_dp_ifaces(struct bridge *);
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static void bridge_flush(struct bridge *);
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static void bridge_pick_local_hw_addr(struct bridge *,
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uint8_t ea[ETH_ADDR_LEN],
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struct iface **hw_addr_iface);
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static uint64_t bridge_pick_datapath_id(struct bridge *,
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const uint8_t bridge_ea[ETH_ADDR_LEN],
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struct iface *hw_addr_iface);
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static uint64_t dpid_from_hash(const void *, size_t nbytes);
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static unixctl_cb_func bridge_unixctl_fdb_show;
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static unixctl_cb_func cfm_unixctl_show;
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static unixctl_cb_func qos_unixctl_show;
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static void port_run(struct port *);
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static void port_wait(struct port *);
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static struct port *port_create(struct bridge *, const char *name);
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static void port_reconfigure(struct port *, const struct ovsrec_port *);
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static void port_del_ifaces(struct port *, const struct ovsrec_port *);
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static void port_destroy(struct port *);
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static struct port *port_lookup(const struct bridge *, const char *name);
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static struct iface *port_get_an_iface(const struct port *);
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static struct port *port_from_dp_ifidx(const struct bridge *,
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uint16_t dp_ifidx);
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static void port_reconfigure_lacp(struct port *);
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static void port_reconfigure_bond(struct port *);
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static void port_send_learning_packets(struct port *);
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static void mirror_create(struct bridge *, struct ovsrec_mirror *);
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static void mirror_destroy(struct mirror *);
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static void mirror_reconfigure(struct bridge *);
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static void mirror_reconfigure_one(struct mirror *, struct ovsrec_mirror *);
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static bool vlan_is_mirrored(const struct mirror *, int vlan);
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static struct iface *iface_create(struct port *port,
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const struct ovsrec_interface *if_cfg);
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static void iface_destroy(struct iface *);
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static struct iface *iface_lookup(const struct bridge *, const char *name);
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static struct iface *iface_find(const char *name);
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static struct iface *iface_from_dp_ifidx(const struct bridge *,
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uint16_t dp_ifidx);
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static void iface_set_mac(struct iface *);
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static void iface_set_ofport(const struct ovsrec_interface *, int64_t ofport);
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static void iface_update_qos(struct iface *, const struct ovsrec_qos *);
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static void iface_update_cfm(struct iface *);
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static bool iface_refresh_cfm_stats(struct iface *iface);
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static bool iface_get_carrier(const struct iface *);
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static bool iface_is_synthetic(const struct iface *);
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static void shash_from_ovs_idl_map(char **keys, char **values, size_t n,
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struct shash *);
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static void shash_to_ovs_idl_map(struct shash *,
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char ***keys, char ***values, size_t *n);
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/* Hooks into ofproto processing. */
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static struct ofhooks bridge_ofhooks;
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/* Public functions. */
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/* Initializes the bridge module, configuring it to obtain its configuration
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* from an OVSDB server accessed over 'remote', which should be a string in a
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* form acceptable to ovsdb_idl_create(). */
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void
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bridge_init(const char *remote)
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{
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/* Create connection to database. */
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idl = ovsdb_idl_create(remote, &ovsrec_idl_class, true);
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ovsdb_idl_omit_alert(idl, &ovsrec_open_vswitch_col_cur_cfg);
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ovsdb_idl_omit_alert(idl, &ovsrec_open_vswitch_col_statistics);
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ovsdb_idl_omit(idl, &ovsrec_open_vswitch_col_external_ids);
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ovsdb_idl_omit(idl, &ovsrec_open_vswitch_col_ovs_version);
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ovsdb_idl_omit(idl, &ovsrec_open_vswitch_col_db_version);
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ovsdb_idl_omit(idl, &ovsrec_open_vswitch_col_system_type);
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ovsdb_idl_omit(idl, &ovsrec_open_vswitch_col_system_version);
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ovsdb_idl_omit_alert(idl, &ovsrec_bridge_col_datapath_id);
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ovsdb_idl_omit(idl, &ovsrec_bridge_col_external_ids);
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ovsdb_idl_omit(idl, &ovsrec_port_col_external_ids);
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ovsdb_idl_omit(idl, &ovsrec_port_col_fake_bridge);
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ovsdb_idl_omit_alert(idl, &ovsrec_interface_col_admin_state);
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ovsdb_idl_omit_alert(idl, &ovsrec_interface_col_duplex);
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ovsdb_idl_omit_alert(idl, &ovsrec_interface_col_link_speed);
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ovsdb_idl_omit_alert(idl, &ovsrec_interface_col_link_state);
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ovsdb_idl_omit_alert(idl, &ovsrec_interface_col_mtu);
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ovsdb_idl_omit_alert(idl, &ovsrec_interface_col_ofport);
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ovsdb_idl_omit_alert(idl, &ovsrec_interface_col_statistics);
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ovsdb_idl_omit_alert(idl, &ovsrec_interface_col_status);
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ovsdb_idl_omit(idl, &ovsrec_interface_col_external_ids);
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ovsdb_idl_omit_alert(idl, &ovsrec_controller_col_is_connected);
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ovsdb_idl_omit_alert(idl, &ovsrec_controller_col_role);
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ovsdb_idl_omit_alert(idl, &ovsrec_controller_col_status);
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ovsdb_idl_omit(idl, &ovsrec_controller_col_external_ids);
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ovsdb_idl_omit_alert(idl, &ovsrec_maintenance_point_col_fault);
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ovsdb_idl_omit_alert(idl, &ovsrec_monitor_col_fault);
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ovsdb_idl_omit(idl, &ovsrec_qos_col_external_ids);
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ovsdb_idl_omit(idl, &ovsrec_queue_col_external_ids);
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ovsdb_idl_omit(idl, &ovsrec_mirror_col_external_ids);
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ovsdb_idl_omit(idl, &ovsrec_netflow_col_external_ids);
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ovsdb_idl_omit(idl, &ovsrec_sflow_col_external_ids);
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ovsdb_idl_omit(idl, &ovsrec_manager_col_external_ids);
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ovsdb_idl_omit(idl, &ovsrec_manager_col_inactivity_probe);
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ovsdb_idl_omit(idl, &ovsrec_manager_col_is_connected);
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ovsdb_idl_omit(idl, &ovsrec_manager_col_max_backoff);
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ovsdb_idl_omit(idl, &ovsrec_manager_col_status);
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ovsdb_idl_omit(idl, &ovsrec_ssl_col_external_ids);
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/* Register unixctl commands. */
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unixctl_command_register("fdb/show", bridge_unixctl_fdb_show, NULL);
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unixctl_command_register("cfm/show", cfm_unixctl_show, NULL);
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unixctl_command_register("qos/show", qos_unixctl_show, NULL);
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unixctl_command_register("bridge/dump-flows", bridge_unixctl_dump_flows,
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NULL);
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unixctl_command_register("bridge/reconnect", bridge_unixctl_reconnect,
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NULL);
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lacp_init();
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bond_init();
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}
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void
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bridge_exit(void)
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{
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struct bridge *br, *next_br;
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LIST_FOR_EACH_SAFE (br, next_br, node, &all_bridges) {
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bridge_destroy(br);
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}
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ovsdb_idl_destroy(idl);
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}
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/* Performs configuration that is only necessary once at ovs-vswitchd startup,
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* but for which the ovs-vswitchd configuration 'cfg' is required. */
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static void
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bridge_configure_once(const struct ovsrec_open_vswitch *cfg)
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{
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static bool already_configured_once;
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struct sset bridge_names;
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struct sset dpif_names, dpif_types;
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const char *type;
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size_t i;
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/* Only do this once per ovs-vswitchd run. */
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if (already_configured_once) {
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return;
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}
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already_configured_once = true;
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stats_timer = time_msec() + STATS_INTERVAL;
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/* Get all the configured bridges' names from 'cfg' into 'bridge_names'. */
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sset_init(&bridge_names);
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for (i = 0; i < cfg->n_bridges; i++) {
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sset_add(&bridge_names, cfg->bridges[i]->name);
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}
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/* Iterate over all system dpifs and delete any of them that do not appear
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* in 'cfg'. */
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sset_init(&dpif_names);
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sset_init(&dpif_types);
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dp_enumerate_types(&dpif_types);
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SSET_FOR_EACH (type, &dpif_types) {
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const char *name;
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dp_enumerate_names(type, &dpif_names);
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/* Delete each dpif whose name is not in 'bridge_names'. */
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SSET_FOR_EACH (name, &dpif_names) {
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if (!sset_contains(&bridge_names, name)) {
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struct dpif *dpif;
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int retval;
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retval = dpif_open(name, type, &dpif);
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if (!retval) {
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dpif_delete(dpif);
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dpif_close(dpif);
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}
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}
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}
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}
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sset_destroy(&bridge_names);
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sset_destroy(&dpif_names);
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sset_destroy(&dpif_types);
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}
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/* Callback for iterate_and_prune_ifaces(). */
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static bool
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check_iface(struct bridge *br, struct iface *iface, void *aux OVS_UNUSED)
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{
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if (!iface->netdev) {
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/* We already reported a related error, don't bother duplicating it. */
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return false;
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}
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if (iface->dp_ifidx < 0) {
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VLOG_ERR("%s interface not in %s, dropping",
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iface->name, dpif_name(br->dpif));
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return false;
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}
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VLOG_DBG("%s has interface %s on port %d", dpif_name(br->dpif),
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iface->name, iface->dp_ifidx);
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return true;
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}
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|
||
/* Callback for iterate_and_prune_ifaces(). */
|
||
static bool
|
||
set_iface_properties(struct bridge *br OVS_UNUSED, struct iface *iface,
|
||
void *aux OVS_UNUSED)
|
||
{
|
||
/* Set policing attributes. */
|
||
netdev_set_policing(iface->netdev,
|
||
iface->cfg->ingress_policing_rate,
|
||
iface->cfg->ingress_policing_burst);
|
||
|
||
/* Set MAC address of internal interfaces other than the local
|
||
* interface. */
|
||
iface_set_mac(iface);
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Calls 'cb' for each interfaces in 'br', passing along the 'aux' argument.
|
||
* Deletes from 'br' all the interfaces for which 'cb' returns false, and then
|
||
* deletes from 'br' any ports that no longer have any interfaces. */
|
||
static void
|
||
iterate_and_prune_ifaces(struct bridge *br,
|
||
bool (*cb)(struct bridge *, struct iface *,
|
||
void *aux),
|
||
void *aux)
|
||
{
|
||
struct port *port, *next_port;
|
||
|
||
HMAP_FOR_EACH_SAFE (port, next_port, hmap_node, &br->ports) {
|
||
struct iface *iface, *next_iface;
|
||
|
||
LIST_FOR_EACH_SAFE (iface, next_iface, port_elem, &port->ifaces) {
|
||
if (!cb(br, iface, aux)) {
|
||
iface_set_ofport(iface->cfg, -1);
|
||
iface_destroy(iface);
|
||
}
|
||
}
|
||
|
||
if (list_is_empty(&port->ifaces)) {
|
||
VLOG_WARN("%s port has no interfaces, dropping", port->name);
|
||
port_destroy(port);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Looks at the list of managers in 'ovs_cfg' and extracts their remote IP
|
||
* addresses and ports into '*managersp' and '*n_managersp'. The caller is
|
||
* responsible for freeing '*managersp' (with free()).
|
||
*
|
||
* You may be asking yourself "why does ovs-vswitchd care?", because
|
||
* ovsdb-server is responsible for connecting to the managers, and ovs-vswitchd
|
||
* should not be and in fact is not directly involved in that. But
|
||
* ovs-vswitchd needs to make sure that ovsdb-server can reach the managers, so
|
||
* it has to tell in-band control where the managers are to enable that.
|
||
* (Thus, only managers connected in-band are collected.)
|
||
*/
|
||
static void
|
||
collect_in_band_managers(const struct ovsrec_open_vswitch *ovs_cfg,
|
||
struct sockaddr_in **managersp, size_t *n_managersp)
|
||
{
|
||
struct sockaddr_in *managers = NULL;
|
||
size_t n_managers = 0;
|
||
struct sset targets;
|
||
size_t i;
|
||
|
||
/* Collect all of the potential targets from the "targets" columns of the
|
||
* rows pointed to by "manager_options", excluding any that are
|
||
* out-of-band. */
|
||
sset_init(&targets);
|
||
for (i = 0; i < ovs_cfg->n_manager_options; i++) {
|
||
struct ovsrec_manager *m = ovs_cfg->manager_options[i];
|
||
|
||
if (m->connection_mode && !strcmp(m->connection_mode, "out-of-band")) {
|
||
sset_find_and_delete(&targets, m->target);
|
||
} else {
|
||
sset_add(&targets, m->target);
|
||
}
|
||
}
|
||
|
||
/* Now extract the targets' IP addresses. */
|
||
if (!sset_is_empty(&targets)) {
|
||
const char *target;
|
||
|
||
managers = xmalloc(sset_count(&targets) * sizeof *managers);
|
||
SSET_FOR_EACH (target, &targets) {
|
||
struct sockaddr_in *sin = &managers[n_managers];
|
||
|
||
if ((!strncmp(target, "tcp:", 4)
|
||
&& inet_parse_active(target + 4, JSONRPC_TCP_PORT, sin)) ||
|
||
(!strncmp(target, "ssl:", 4)
|
||
&& inet_parse_active(target + 4, JSONRPC_SSL_PORT, sin))) {
|
||
n_managers++;
|
||
}
|
||
}
|
||
}
|
||
sset_destroy(&targets);
|
||
|
||
*managersp = managers;
|
||
*n_managersp = n_managers;
|
||
}
|
||
|
||
static void
|
||
bridge_reconfigure(const struct ovsrec_open_vswitch *ovs_cfg)
|
||
{
|
||
struct shash old_br, new_br;
|
||
struct shash_node *node;
|
||
struct bridge *br, *next;
|
||
struct sockaddr_in *managers;
|
||
size_t n_managers;
|
||
size_t i;
|
||
int sflow_bridge_number;
|
||
|
||
COVERAGE_INC(bridge_reconfigure);
|
||
|
||
collect_in_band_managers(ovs_cfg, &managers, &n_managers);
|
||
|
||
/* Collect old and new bridges. */
|
||
shash_init(&old_br);
|
||
shash_init(&new_br);
|
||
LIST_FOR_EACH (br, node, &all_bridges) {
|
||
shash_add(&old_br, br->name, br);
|
||
}
|
||
for (i = 0; i < ovs_cfg->n_bridges; i++) {
|
||
const struct ovsrec_bridge *br_cfg = ovs_cfg->bridges[i];
|
||
if (!shash_add_once(&new_br, br_cfg->name, br_cfg)) {
|
||
VLOG_WARN("more than one bridge named %s", br_cfg->name);
|
||
}
|
||
}
|
||
|
||
/* Get rid of deleted bridges and add new bridges. */
|
||
LIST_FOR_EACH_SAFE (br, next, node, &all_bridges) {
|
||
struct ovsrec_bridge *br_cfg = shash_find_data(&new_br, br->name);
|
||
if (br_cfg) {
|
||
br->cfg = br_cfg;
|
||
} else {
|
||
bridge_destroy(br);
|
||
}
|
||
}
|
||
SHASH_FOR_EACH (node, &new_br) {
|
||
const char *br_name = node->name;
|
||
const struct ovsrec_bridge *br_cfg = node->data;
|
||
br = shash_find_data(&old_br, br_name);
|
||
if (br) {
|
||
/* If the bridge datapath type has changed, we need to tear it
|
||
* down and recreate. */
|
||
if (strcmp(br->cfg->datapath_type, br_cfg->datapath_type)) {
|
||
bridge_destroy(br);
|
||
bridge_create(br_cfg);
|
||
}
|
||
} else {
|
||
bridge_create(br_cfg);
|
||
}
|
||
}
|
||
shash_destroy(&old_br);
|
||
shash_destroy(&new_br);
|
||
|
||
/* Reconfigure all bridges. */
|
||
LIST_FOR_EACH (br, node, &all_bridges) {
|
||
bridge_reconfigure_one(br);
|
||
}
|
||
|
||
/* Add and delete ports on all datapaths.
|
||
*
|
||
* The kernel will reject any attempt to add a given port to a datapath if
|
||
* that port already belongs to a different datapath, so we must do all
|
||
* port deletions before any port additions. */
|
||
LIST_FOR_EACH (br, node, &all_bridges) {
|
||
struct dpif_port_dump dump;
|
||
struct shash want_ifaces;
|
||
struct dpif_port dpif_port;
|
||
|
||
bridge_get_all_ifaces(br, &want_ifaces);
|
||
DPIF_PORT_FOR_EACH (&dpif_port, &dump, br->dpif) {
|
||
if (!shash_find(&want_ifaces, dpif_port.name)
|
||
&& strcmp(dpif_port.name, br->name)) {
|
||
int retval = dpif_port_del(br->dpif, dpif_port.port_no);
|
||
if (retval) {
|
||
VLOG_WARN("failed to remove %s interface from %s: %s",
|
||
dpif_port.name, dpif_name(br->dpif),
|
||
strerror(retval));
|
||
}
|
||
}
|
||
}
|
||
shash_destroy(&want_ifaces);
|
||
}
|
||
LIST_FOR_EACH (br, node, &all_bridges) {
|
||
struct shash cur_ifaces, want_ifaces;
|
||
struct dpif_port_dump dump;
|
||
struct dpif_port dpif_port;
|
||
|
||
/* Get the set of interfaces currently in this datapath. */
|
||
shash_init(&cur_ifaces);
|
||
DPIF_PORT_FOR_EACH (&dpif_port, &dump, br->dpif) {
|
||
struct dpif_port *port_info = xmalloc(sizeof *port_info);
|
||
dpif_port_clone(port_info, &dpif_port);
|
||
shash_add(&cur_ifaces, dpif_port.name, port_info);
|
||
}
|
||
|
||
/* Get the set of interfaces we want on this datapath. */
|
||
bridge_get_all_ifaces(br, &want_ifaces);
|
||
|
||
hmap_clear(&br->ifaces);
|
||
SHASH_FOR_EACH (node, &want_ifaces) {
|
||
const char *if_name = node->name;
|
||
struct iface *iface = node->data;
|
||
struct dpif_port *dpif_port;
|
||
const char *type;
|
||
int error;
|
||
|
||
type = iface ? iface->type : "internal";
|
||
dpif_port = shash_find_data(&cur_ifaces, if_name);
|
||
|
||
/* If we have a port or a netdev already, and it's not the type we
|
||
* want, then delete the port (if any) and close the netdev (if
|
||
* any). */
|
||
if ((dpif_port && strcmp(dpif_port->type, type))
|
||
|| (iface && iface->netdev
|
||
&& strcmp(type, netdev_get_type(iface->netdev)))) {
|
||
if (dpif_port) {
|
||
error = ofproto_port_del(br->ofproto, dpif_port->port_no);
|
||
if (error) {
|
||
continue;
|
||
}
|
||
dpif_port = NULL;
|
||
}
|
||
if (iface) {
|
||
netdev_close(iface->netdev);
|
||
iface->netdev = NULL;
|
||
}
|
||
}
|
||
|
||
/* If the port doesn't exist or we don't have the netdev open,
|
||
* we need to do more work. */
|
||
if (!dpif_port || (iface && !iface->netdev)) {
|
||
struct netdev_options options;
|
||
struct netdev *netdev;
|
||
struct shash args;
|
||
|
||
/* First open the network device. */
|
||
options.name = if_name;
|
||
options.type = type;
|
||
options.args = &args;
|
||
options.ethertype = NETDEV_ETH_TYPE_NONE;
|
||
|
||
shash_init(&args);
|
||
if (iface) {
|
||
shash_from_ovs_idl_map(iface->cfg->key_options,
|
||
iface->cfg->value_options,
|
||
iface->cfg->n_options, &args);
|
||
}
|
||
error = netdev_open(&options, &netdev);
|
||
shash_destroy(&args);
|
||
|
||
if (error) {
|
||
VLOG_WARN("could not open network device %s (%s)",
|
||
if_name, strerror(error));
|
||
continue;
|
||
}
|
||
|
||
/* Then add the port if we haven't already. */
|
||
if (!dpif_port) {
|
||
error = dpif_port_add(br->dpif, netdev, NULL);
|
||
if (error) {
|
||
netdev_close(netdev);
|
||
if (error == EFBIG) {
|
||
VLOG_ERR("ran out of valid port numbers on %s",
|
||
dpif_name(br->dpif));
|
||
break;
|
||
} else {
|
||
VLOG_WARN("failed to add %s interface to %s: %s",
|
||
if_name, dpif_name(br->dpif),
|
||
strerror(error));
|
||
continue;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Update 'iface'. */
|
||
if (iface) {
|
||
iface->netdev = netdev;
|
||
}
|
||
} else if (iface && iface->netdev) {
|
||
struct shash args;
|
||
|
||
shash_init(&args);
|
||
shash_from_ovs_idl_map(iface->cfg->key_options,
|
||
iface->cfg->value_options,
|
||
iface->cfg->n_options, &args);
|
||
netdev_set_config(iface->netdev, &args);
|
||
shash_destroy(&args);
|
||
}
|
||
}
|
||
shash_destroy(&want_ifaces);
|
||
|
||
SHASH_FOR_EACH (node, &cur_ifaces) {
|
||
struct dpif_port *port_info = node->data;
|
||
dpif_port_destroy(port_info);
|
||
free(port_info);
|
||
}
|
||
shash_destroy(&cur_ifaces);
|
||
}
|
||
sflow_bridge_number = 0;
|
||
LIST_FOR_EACH (br, node, &all_bridges) {
|
||
uint8_t ea[ETH_ADDR_LEN];
|
||
uint64_t dpid;
|
||
struct iface *local_iface;
|
||
struct iface *hw_addr_iface;
|
||
char *dpid_string;
|
||
|
||
bridge_fetch_dp_ifaces(br);
|
||
|
||
/* Delete interfaces that cannot be opened.
|
||
*
|
||
* From this point forward we are guaranteed that every "struct iface"
|
||
* has nonnull 'netdev' and correct 'dp_ifidx'. */
|
||
iterate_and_prune_ifaces(br, check_iface, NULL);
|
||
|
||
/* Pick local port hardware address, datapath ID. */
|
||
bridge_pick_local_hw_addr(br, ea, &hw_addr_iface);
|
||
local_iface = iface_from_dp_ifidx(br, ODPP_LOCAL);
|
||
if (local_iface) {
|
||
int error = netdev_set_etheraddr(local_iface->netdev, ea);
|
||
if (error) {
|
||
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
|
||
VLOG_ERR_RL(&rl, "bridge %s: failed to set bridge "
|
||
"Ethernet address: %s",
|
||
br->name, strerror(error));
|
||
}
|
||
}
|
||
memcpy(br->ea, ea, ETH_ADDR_LEN);
|
||
|
||
dpid = bridge_pick_datapath_id(br, ea, hw_addr_iface);
|
||
ofproto_set_datapath_id(br->ofproto, dpid);
|
||
|
||
dpid_string = xasprintf("%016"PRIx64, dpid);
|
||
ovsrec_bridge_set_datapath_id(br->cfg, dpid_string);
|
||
free(dpid_string);
|
||
|
||
/* Set NetFlow configuration on this bridge. */
|
||
if (br->cfg->netflow) {
|
||
struct ovsrec_netflow *nf_cfg = br->cfg->netflow;
|
||
struct netflow_options opts;
|
||
|
||
memset(&opts, 0, sizeof opts);
|
||
|
||
dpif_get_netflow_ids(br->dpif, &opts.engine_type, &opts.engine_id);
|
||
if (nf_cfg->engine_type) {
|
||
opts.engine_type = *nf_cfg->engine_type;
|
||
}
|
||
if (nf_cfg->engine_id) {
|
||
opts.engine_id = *nf_cfg->engine_id;
|
||
}
|
||
|
||
opts.active_timeout = nf_cfg->active_timeout;
|
||
if (!opts.active_timeout) {
|
||
opts.active_timeout = -1;
|
||
} else if (opts.active_timeout < 0) {
|
||
VLOG_WARN("bridge %s: active timeout interval set to negative "
|
||
"value, using default instead (%d seconds)", br->name,
|
||
NF_ACTIVE_TIMEOUT_DEFAULT);
|
||
opts.active_timeout = -1;
|
||
}
|
||
|
||
opts.add_id_to_iface = nf_cfg->add_id_to_interface;
|
||
if (opts.add_id_to_iface) {
|
||
if (opts.engine_id > 0x7f) {
|
||
VLOG_WARN("bridge %s: netflow port mangling may conflict "
|
||
"with another vswitch, choose an engine id less "
|
||
"than 128", br->name);
|
||
}
|
||
if (hmap_count(&br->ports) > 508) {
|
||
VLOG_WARN("bridge %s: netflow port mangling will conflict "
|
||
"with another port when more than 508 ports are "
|
||
"used", br->name);
|
||
}
|
||
}
|
||
|
||
sset_init(&opts.collectors);
|
||
sset_add_array(&opts.collectors,
|
||
nf_cfg->targets, nf_cfg->n_targets);
|
||
if (ofproto_set_netflow(br->ofproto, &opts)) {
|
||
VLOG_ERR("bridge %s: problem setting netflow collectors",
|
||
br->name);
|
||
}
|
||
sset_destroy(&opts.collectors);
|
||
} else {
|
||
ofproto_set_netflow(br->ofproto, NULL);
|
||
}
|
||
|
||
/* Set sFlow configuration on this bridge. */
|
||
if (br->cfg->sflow) {
|
||
const struct ovsrec_sflow *sflow_cfg = br->cfg->sflow;
|
||
struct ovsrec_controller **controllers;
|
||
struct ofproto_sflow_options oso;
|
||
size_t n_controllers;
|
||
|
||
memset(&oso, 0, sizeof oso);
|
||
|
||
sset_init(&oso.targets);
|
||
sset_add_array(&oso.targets,
|
||
sflow_cfg->targets, sflow_cfg->n_targets);
|
||
|
||
oso.sampling_rate = SFL_DEFAULT_SAMPLING_RATE;
|
||
if (sflow_cfg->sampling) {
|
||
oso.sampling_rate = *sflow_cfg->sampling;
|
||
}
|
||
|
||
oso.polling_interval = SFL_DEFAULT_POLLING_INTERVAL;
|
||
if (sflow_cfg->polling) {
|
||
oso.polling_interval = *sflow_cfg->polling;
|
||
}
|
||
|
||
oso.header_len = SFL_DEFAULT_HEADER_SIZE;
|
||
if (sflow_cfg->header) {
|
||
oso.header_len = *sflow_cfg->header;
|
||
}
|
||
|
||
oso.sub_id = sflow_bridge_number++;
|
||
oso.agent_device = sflow_cfg->agent;
|
||
|
||
oso.control_ip = NULL;
|
||
n_controllers = bridge_get_controllers(br, &controllers);
|
||
for (i = 0; i < n_controllers; i++) {
|
||
if (controllers[i]->local_ip) {
|
||
oso.control_ip = controllers[i]->local_ip;
|
||
break;
|
||
}
|
||
}
|
||
ofproto_set_sflow(br->ofproto, &oso);
|
||
|
||
sset_destroy(&oso.targets);
|
||
} else {
|
||
ofproto_set_sflow(br->ofproto, NULL);
|
||
}
|
||
|
||
/* Update the controller and related settings. It would be more
|
||
* straightforward to call this from bridge_reconfigure_one(), but we
|
||
* can't do it there for two reasons. First, and most importantly, at
|
||
* that point we don't know the dp_ifidx of any interfaces that have
|
||
* been added to the bridge (because we haven't actually added them to
|
||
* the datapath). Second, at that point we haven't set the datapath ID
|
||
* yet; when a controller is configured, resetting the datapath ID will
|
||
* immediately disconnect from the controller, so it's better to set
|
||
* the datapath ID before the controller. */
|
||
bridge_reconfigure_remotes(br, managers, n_managers);
|
||
}
|
||
LIST_FOR_EACH (br, node, &all_bridges) {
|
||
struct port *port;
|
||
|
||
br->has_bonded_ports = false;
|
||
HMAP_FOR_EACH (port, hmap_node, &br->ports) {
|
||
struct iface *iface;
|
||
|
||
port_reconfigure_lacp(port);
|
||
port_reconfigure_bond(port);
|
||
|
||
LIST_FOR_EACH (iface, port_elem, &port->ifaces) {
|
||
iface_update_qos(iface, port->cfg->qos);
|
||
}
|
||
}
|
||
}
|
||
LIST_FOR_EACH (br, node, &all_bridges) {
|
||
iterate_and_prune_ifaces(br, set_iface_properties, NULL);
|
||
}
|
||
|
||
/* Some reconfiguration operations require the bridge to have been run at
|
||
* least once. */
|
||
LIST_FOR_EACH (br, node, &all_bridges) {
|
||
struct iface *iface;
|
||
|
||
bridge_run_one(br);
|
||
|
||
HMAP_FOR_EACH (iface, dp_ifidx_node, &br->ifaces) {
|
||
iface_update_cfm(iface);
|
||
}
|
||
}
|
||
|
||
free(managers);
|
||
|
||
/* ovs-vswitchd has completed initialization, so allow the process that
|
||
* forked us to exit successfully. */
|
||
daemonize_complete();
|
||
}
|
||
|
||
static const char *
|
||
get_ovsrec_key_value(const struct ovsdb_idl_row *row,
|
||
const struct ovsdb_idl_column *column,
|
||
const char *key)
|
||
{
|
||
const struct ovsdb_datum *datum;
|
||
union ovsdb_atom atom;
|
||
unsigned int idx;
|
||
|
||
datum = ovsdb_idl_get(row, column, OVSDB_TYPE_STRING, OVSDB_TYPE_STRING);
|
||
atom.string = (char *) key;
|
||
idx = ovsdb_datum_find_key(datum, &atom, OVSDB_TYPE_STRING);
|
||
return idx == UINT_MAX ? NULL : datum->values[idx].string;
|
||
}
|
||
|
||
static const char *
|
||
bridge_get_other_config(const struct ovsrec_bridge *br_cfg, const char *key)
|
||
{
|
||
return get_ovsrec_key_value(&br_cfg->header_,
|
||
&ovsrec_bridge_col_other_config, key);
|
||
}
|
||
|
||
static void
|
||
bridge_pick_local_hw_addr(struct bridge *br, uint8_t ea[ETH_ADDR_LEN],
|
||
struct iface **hw_addr_iface)
|
||
{
|
||
const char *hwaddr;
|
||
struct port *port;
|
||
int error;
|
||
|
||
*hw_addr_iface = NULL;
|
||
|
||
/* Did the user request a particular MAC? */
|
||
hwaddr = bridge_get_other_config(br->cfg, "hwaddr");
|
||
if (hwaddr && eth_addr_from_string(hwaddr, ea)) {
|
||
if (eth_addr_is_multicast(ea)) {
|
||
VLOG_ERR("bridge %s: cannot set MAC address to multicast "
|
||
"address "ETH_ADDR_FMT, br->name, ETH_ADDR_ARGS(ea));
|
||
} else if (eth_addr_is_zero(ea)) {
|
||
VLOG_ERR("bridge %s: cannot set MAC address to zero", br->name);
|
||
} else {
|
||
return;
|
||
}
|
||
}
|
||
|
||
/* Otherwise choose the minimum non-local MAC address among all of the
|
||
* interfaces. */
|
||
memset(ea, 0xff, ETH_ADDR_LEN);
|
||
HMAP_FOR_EACH (port, hmap_node, &br->ports) {
|
||
uint8_t iface_ea[ETH_ADDR_LEN];
|
||
struct iface *candidate;
|
||
struct iface *iface;
|
||
|
||
/* Mirror output ports don't participate. */
|
||
if (port->is_mirror_output_port) {
|
||
continue;
|
||
}
|
||
|
||
/* Choose the MAC address to represent the port. */
|
||
iface = NULL;
|
||
if (port->cfg->mac && eth_addr_from_string(port->cfg->mac, iface_ea)) {
|
||
/* Find the interface with this Ethernet address (if any) so that
|
||
* we can provide the correct devname to the caller. */
|
||
LIST_FOR_EACH (candidate, port_elem, &port->ifaces) {
|
||
uint8_t candidate_ea[ETH_ADDR_LEN];
|
||
if (!netdev_get_etheraddr(candidate->netdev, candidate_ea)
|
||
&& eth_addr_equals(iface_ea, candidate_ea)) {
|
||
iface = candidate;
|
||
}
|
||
}
|
||
} else {
|
||
/* Choose the interface whose MAC address will represent the port.
|
||
* The Linux kernel bonding code always chooses the MAC address of
|
||
* the first slave added to a bond, and the Fedora networking
|
||
* scripts always add slaves to a bond in alphabetical order, so
|
||
* for compatibility we choose the interface with the name that is
|
||
* first in alphabetical order. */
|
||
LIST_FOR_EACH (candidate, port_elem, &port->ifaces) {
|
||
if (!iface || strcmp(candidate->name, iface->name) < 0) {
|
||
iface = candidate;
|
||
}
|
||
}
|
||
|
||
/* The local port doesn't count (since we're trying to choose its
|
||
* MAC address anyway). */
|
||
if (iface->dp_ifidx == ODPP_LOCAL) {
|
||
continue;
|
||
}
|
||
|
||
/* Grab MAC. */
|
||
error = netdev_get_etheraddr(iface->netdev, iface_ea);
|
||
if (error) {
|
||
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
|
||
VLOG_ERR_RL(&rl, "failed to obtain Ethernet address of %s: %s",
|
||
iface->name, strerror(error));
|
||
continue;
|
||
}
|
||
}
|
||
|
||
/* Compare against our current choice. */
|
||
if (!eth_addr_is_multicast(iface_ea) &&
|
||
!eth_addr_is_local(iface_ea) &&
|
||
!eth_addr_is_reserved(iface_ea) &&
|
||
!eth_addr_is_zero(iface_ea) &&
|
||
eth_addr_compare_3way(iface_ea, ea) < 0)
|
||
{
|
||
memcpy(ea, iface_ea, ETH_ADDR_LEN);
|
||
*hw_addr_iface = iface;
|
||
}
|
||
}
|
||
if (eth_addr_is_multicast(ea)) {
|
||
memcpy(ea, br->default_ea, ETH_ADDR_LEN);
|
||
*hw_addr_iface = NULL;
|
||
VLOG_WARN("bridge %s: using default bridge Ethernet "
|
||
"address "ETH_ADDR_FMT, br->name, ETH_ADDR_ARGS(ea));
|
||
} else {
|
||
VLOG_DBG("bridge %s: using bridge Ethernet address "ETH_ADDR_FMT,
|
||
br->name, ETH_ADDR_ARGS(ea));
|
||
}
|
||
}
|
||
|
||
/* Choose and returns the datapath ID for bridge 'br' given that the bridge
|
||
* Ethernet address is 'bridge_ea'. If 'bridge_ea' is the Ethernet address of
|
||
* an interface on 'br', then that interface must be passed in as
|
||
* 'hw_addr_iface'; if 'bridge_ea' was derived some other way, then
|
||
* 'hw_addr_iface' must be passed in as a null pointer. */
|
||
static uint64_t
|
||
bridge_pick_datapath_id(struct bridge *br,
|
||
const uint8_t bridge_ea[ETH_ADDR_LEN],
|
||
struct iface *hw_addr_iface)
|
||
{
|
||
/*
|
||
* The procedure for choosing a bridge MAC address will, in the most
|
||
* ordinary case, also choose a unique MAC that we can use as a datapath
|
||
* ID. In some special cases, though, multiple bridges will end up with
|
||
* the same MAC address. This is OK for the bridges, but it will confuse
|
||
* the OpenFlow controller, because each datapath needs a unique datapath
|
||
* ID.
|
||
*
|
||
* Datapath IDs must be unique. It is also very desirable that they be
|
||
* stable from one run to the next, so that policy set on a datapath
|
||
* "sticks".
|
||
*/
|
||
const char *datapath_id;
|
||
uint64_t dpid;
|
||
|
||
datapath_id = bridge_get_other_config(br->cfg, "datapath-id");
|
||
if (datapath_id && dpid_from_string(datapath_id, &dpid)) {
|
||
return dpid;
|
||
}
|
||
|
||
if (hw_addr_iface) {
|
||
int vlan;
|
||
if (!netdev_get_vlan_vid(hw_addr_iface->netdev, &vlan)) {
|
||
/*
|
||
* A bridge whose MAC address is taken from a VLAN network device
|
||
* (that is, a network device created with vconfig(8) or similar
|
||
* tool) will have the same MAC address as a bridge on the VLAN
|
||
* device's physical network device.
|
||
*
|
||
* Handle this case by hashing the physical network device MAC
|
||
* along with the VLAN identifier.
|
||
*/
|
||
uint8_t buf[ETH_ADDR_LEN + 2];
|
||
memcpy(buf, bridge_ea, ETH_ADDR_LEN);
|
||
buf[ETH_ADDR_LEN] = vlan >> 8;
|
||
buf[ETH_ADDR_LEN + 1] = vlan;
|
||
return dpid_from_hash(buf, sizeof buf);
|
||
} else {
|
||
/*
|
||
* Assume that this bridge's MAC address is unique, since it
|
||
* doesn't fit any of the cases we handle specially.
|
||
*/
|
||
}
|
||
} else {
|
||
/*
|
||
* A purely internal bridge, that is, one that has no non-virtual
|
||
* network devices on it at all, is more difficult because it has no
|
||
* natural unique identifier at all.
|
||
*
|
||
* When the host is a XenServer, we handle this case by hashing the
|
||
* host's UUID with the name of the bridge. Names of bridges are
|
||
* persistent across XenServer reboots, although they can be reused if
|
||
* an internal network is destroyed and then a new one is later
|
||
* created, so this is fairly effective.
|
||
*
|
||
* When the host is not a XenServer, we punt by using a random MAC
|
||
* address on each run.
|
||
*/
|
||
const char *host_uuid = xenserver_get_host_uuid();
|
||
if (host_uuid) {
|
||
char *combined = xasprintf("%s,%s", host_uuid, br->name);
|
||
dpid = dpid_from_hash(combined, strlen(combined));
|
||
free(combined);
|
||
return dpid;
|
||
}
|
||
}
|
||
|
||
return eth_addr_to_uint64(bridge_ea);
|
||
}
|
||
|
||
static uint64_t
|
||
dpid_from_hash(const void *data, size_t n)
|
||
{
|
||
uint8_t hash[SHA1_DIGEST_SIZE];
|
||
|
||
BUILD_ASSERT_DECL(sizeof hash >= ETH_ADDR_LEN);
|
||
sha1_bytes(data, n, hash);
|
||
eth_addr_mark_random(hash);
|
||
return eth_addr_to_uint64(hash);
|
||
}
|
||
|
||
static void
|
||
iface_refresh_status(struct iface *iface)
|
||
{
|
||
struct shash sh;
|
||
|
||
enum netdev_flags flags;
|
||
uint32_t current;
|
||
int64_t bps;
|
||
int mtu;
|
||
int64_t mtu_64;
|
||
int error;
|
||
|
||
if (iface_is_synthetic(iface)) {
|
||
return;
|
||
}
|
||
|
||
shash_init(&sh);
|
||
|
||
if (!netdev_get_status(iface->netdev, &sh)) {
|
||
size_t n;
|
||
char **keys, **values;
|
||
|
||
shash_to_ovs_idl_map(&sh, &keys, &values, &n);
|
||
ovsrec_interface_set_status(iface->cfg, keys, values, n);
|
||
|
||
free(keys);
|
||
free(values);
|
||
} else {
|
||
ovsrec_interface_set_status(iface->cfg, NULL, NULL, 0);
|
||
}
|
||
|
||
shash_destroy_free_data(&sh);
|
||
|
||
error = netdev_get_flags(iface->netdev, &flags);
|
||
if (!error) {
|
||
ovsrec_interface_set_admin_state(iface->cfg, flags & NETDEV_UP ? "up" : "down");
|
||
}
|
||
else {
|
||
ovsrec_interface_set_admin_state(iface->cfg, NULL);
|
||
}
|
||
|
||
error = netdev_get_features(iface->netdev, ¤t, NULL, NULL, NULL);
|
||
if (!error) {
|
||
ovsrec_interface_set_duplex(iface->cfg,
|
||
netdev_features_is_full_duplex(current)
|
||
? "full" : "half");
|
||
/* warning: uint64_t -> int64_t conversion */
|
||
bps = netdev_features_to_bps(current);
|
||
ovsrec_interface_set_link_speed(iface->cfg, &bps, 1);
|
||
}
|
||
else {
|
||
ovsrec_interface_set_duplex(iface->cfg, NULL);
|
||
ovsrec_interface_set_link_speed(iface->cfg, NULL, 0);
|
||
}
|
||
|
||
|
||
ovsrec_interface_set_link_state(iface->cfg,
|
||
iface_get_carrier(iface) ? "up" : "down");
|
||
|
||
error = netdev_get_mtu(iface->netdev, &mtu);
|
||
if (!error && mtu != INT_MAX) {
|
||
mtu_64 = mtu;
|
||
ovsrec_interface_set_mtu(iface->cfg, &mtu_64, 1);
|
||
}
|
||
else {
|
||
ovsrec_interface_set_mtu(iface->cfg, NULL, 0);
|
||
}
|
||
}
|
||
|
||
/* Writes 'iface''s CFM statistics to the database. Returns true if anything
|
||
* changed, false otherwise. */
|
||
static bool
|
||
iface_refresh_cfm_stats(struct iface *iface)
|
||
{
|
||
const struct ovsrec_monitor *mon;
|
||
const struct cfm *cfm;
|
||
bool changed = false;
|
||
size_t i;
|
||
|
||
mon = iface->cfg->monitor;
|
||
cfm = ofproto_iface_get_cfm(iface->port->bridge->ofproto, iface->dp_ifidx);
|
||
|
||
if (!cfm || !mon) {
|
||
return false;
|
||
}
|
||
|
||
for (i = 0; i < mon->n_remote_mps; i++) {
|
||
const struct ovsrec_maintenance_point *mp;
|
||
const struct remote_mp *rmp;
|
||
|
||
mp = mon->remote_mps[i];
|
||
rmp = cfm_get_remote_mp(cfm, mp->mpid);
|
||
|
||
if (mp->n_fault != 1 || mp->fault[0] != rmp->fault) {
|
||
ovsrec_maintenance_point_set_fault(mp, &rmp->fault, 1);
|
||
changed = true;
|
||
}
|
||
}
|
||
|
||
if (mon->n_fault != 1 || mon->fault[0] != cfm->fault) {
|
||
ovsrec_monitor_set_fault(mon, &cfm->fault, 1);
|
||
changed = true;
|
||
}
|
||
|
||
return changed;
|
||
}
|
||
|
||
static bool
|
||
iface_refresh_lacp_stats(struct iface *iface)
|
||
{
|
||
bool *db_current = iface->cfg->lacp_current;
|
||
bool changed = false;
|
||
|
||
if (iface->port->lacp) {
|
||
bool current = lacp_slave_is_current(iface->port->lacp, iface);
|
||
|
||
if (!db_current || *db_current != current) {
|
||
changed = true;
|
||
ovsrec_interface_set_lacp_current(iface->cfg, ¤t, 1);
|
||
}
|
||
} else if (db_current) {
|
||
changed = true;
|
||
ovsrec_interface_set_lacp_current(iface->cfg, NULL, 0);
|
||
}
|
||
|
||
return changed;
|
||
}
|
||
|
||
static void
|
||
iface_refresh_stats(struct iface *iface)
|
||
{
|
||
struct iface_stat {
|
||
char *name;
|
||
int offset;
|
||
};
|
||
static const struct iface_stat iface_stats[] = {
|
||
{ "rx_packets", offsetof(struct netdev_stats, rx_packets) },
|
||
{ "tx_packets", offsetof(struct netdev_stats, tx_packets) },
|
||
{ "rx_bytes", offsetof(struct netdev_stats, rx_bytes) },
|
||
{ "tx_bytes", offsetof(struct netdev_stats, tx_bytes) },
|
||
{ "rx_dropped", offsetof(struct netdev_stats, rx_dropped) },
|
||
{ "tx_dropped", offsetof(struct netdev_stats, tx_dropped) },
|
||
{ "rx_errors", offsetof(struct netdev_stats, rx_errors) },
|
||
{ "tx_errors", offsetof(struct netdev_stats, tx_errors) },
|
||
{ "rx_frame_err", offsetof(struct netdev_stats, rx_frame_errors) },
|
||
{ "rx_over_err", offsetof(struct netdev_stats, rx_over_errors) },
|
||
{ "rx_crc_err", offsetof(struct netdev_stats, rx_crc_errors) },
|
||
{ "collisions", offsetof(struct netdev_stats, collisions) },
|
||
};
|
||
enum { N_STATS = ARRAY_SIZE(iface_stats) };
|
||
const struct iface_stat *s;
|
||
|
||
char *keys[N_STATS];
|
||
int64_t values[N_STATS];
|
||
int n;
|
||
|
||
struct netdev_stats stats;
|
||
|
||
if (iface_is_synthetic(iface)) {
|
||
return;
|
||
}
|
||
|
||
/* Intentionally ignore return value, since errors will set 'stats' to
|
||
* all-1s, and we will deal with that correctly below. */
|
||
netdev_get_stats(iface->netdev, &stats);
|
||
|
||
n = 0;
|
||
for (s = iface_stats; s < &iface_stats[N_STATS]; s++) {
|
||
uint64_t value = *(uint64_t *) (((char *) &stats) + s->offset);
|
||
if (value != UINT64_MAX) {
|
||
keys[n] = s->name;
|
||
values[n] = value;
|
||
n++;
|
||
}
|
||
}
|
||
|
||
ovsrec_interface_set_statistics(iface->cfg, keys, values, n);
|
||
}
|
||
|
||
static void
|
||
refresh_system_stats(const struct ovsrec_open_vswitch *cfg)
|
||
{
|
||
struct ovsdb_datum datum;
|
||
struct shash stats;
|
||
|
||
shash_init(&stats);
|
||
get_system_stats(&stats);
|
||
|
||
ovsdb_datum_from_shash(&datum, &stats);
|
||
ovsdb_idl_txn_write(&cfg->header_, &ovsrec_open_vswitch_col_statistics,
|
||
&datum);
|
||
}
|
||
|
||
static inline const char *
|
||
nx_role_to_str(enum nx_role role)
|
||
{
|
||
switch (role) {
|
||
case NX_ROLE_OTHER:
|
||
return "other";
|
||
case NX_ROLE_MASTER:
|
||
return "master";
|
||
case NX_ROLE_SLAVE:
|
||
return "slave";
|
||
default:
|
||
return "*** INVALID ROLE ***";
|
||
}
|
||
}
|
||
|
||
static void
|
||
bridge_refresh_controller_status(const struct bridge *br)
|
||
{
|
||
struct shash info;
|
||
const struct ovsrec_controller *cfg;
|
||
|
||
ofproto_get_ofproto_controller_info(br->ofproto, &info);
|
||
|
||
OVSREC_CONTROLLER_FOR_EACH(cfg, idl) {
|
||
struct ofproto_controller_info *cinfo =
|
||
shash_find_data(&info, cfg->target);
|
||
|
||
if (cinfo) {
|
||
ovsrec_controller_set_is_connected(cfg, cinfo->is_connected);
|
||
ovsrec_controller_set_role(cfg, nx_role_to_str(cinfo->role));
|
||
ovsrec_controller_set_status(cfg, (char **) cinfo->pairs.keys,
|
||
(char **) cinfo->pairs.values,
|
||
cinfo->pairs.n);
|
||
} else {
|
||
ovsrec_controller_set_is_connected(cfg, false);
|
||
ovsrec_controller_set_role(cfg, NULL);
|
||
ovsrec_controller_set_status(cfg, NULL, NULL, 0);
|
||
}
|
||
}
|
||
|
||
ofproto_free_ofproto_controller_info(&info);
|
||
}
|
||
|
||
void
|
||
bridge_run(void)
|
||
{
|
||
const struct ovsrec_open_vswitch *cfg;
|
||
|
||
bool datapath_destroyed;
|
||
bool database_changed;
|
||
struct bridge *br;
|
||
|
||
/* Let each bridge do the work that it needs to do. */
|
||
datapath_destroyed = false;
|
||
LIST_FOR_EACH (br, node, &all_bridges) {
|
||
int error = bridge_run_one(br);
|
||
if (error) {
|
||
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
|
||
VLOG_ERR_RL(&rl, "bridge %s: datapath was destroyed externally, "
|
||
"forcing reconfiguration", br->name);
|
||
datapath_destroyed = true;
|
||
}
|
||
}
|
||
|
||
/* (Re)configure if necessary. */
|
||
database_changed = ovsdb_idl_run(idl);
|
||
cfg = ovsrec_open_vswitch_first(idl);
|
||
#ifdef HAVE_OPENSSL
|
||
/* Re-configure SSL. We do this on every trip through the main loop,
|
||
* instead of just when the database changes, because the contents of the
|
||
* key and certificate files can change without the database changing.
|
||
*
|
||
* We do this before bridge_reconfigure() because that function might
|
||
* initiate SSL connections and thus requires SSL to be configured. */
|
||
if (cfg && cfg->ssl) {
|
||
const struct ovsrec_ssl *ssl = cfg->ssl;
|
||
|
||
stream_ssl_set_key_and_cert(ssl->private_key, ssl->certificate);
|
||
stream_ssl_set_ca_cert_file(ssl->ca_cert, ssl->bootstrap_ca_cert);
|
||
}
|
||
#endif
|
||
if (database_changed || datapath_destroyed) {
|
||
if (cfg) {
|
||
struct ovsdb_idl_txn *txn = ovsdb_idl_txn_create(idl);
|
||
|
||
bridge_configure_once(cfg);
|
||
bridge_reconfigure(cfg);
|
||
|
||
ovsrec_open_vswitch_set_cur_cfg(cfg, cfg->next_cfg);
|
||
ovsdb_idl_txn_commit(txn);
|
||
ovsdb_idl_txn_destroy(txn); /* XXX */
|
||
} else {
|
||
/* We still need to reconfigure to avoid dangling pointers to
|
||
* now-destroyed ovsrec structures inside bridge data. */
|
||
static const struct ovsrec_open_vswitch null_cfg;
|
||
|
||
bridge_reconfigure(&null_cfg);
|
||
}
|
||
}
|
||
|
||
/* Refresh system and interface stats if necessary. */
|
||
if (time_msec() >= stats_timer) {
|
||
if (cfg) {
|
||
struct ovsdb_idl_txn *txn;
|
||
|
||
txn = ovsdb_idl_txn_create(idl);
|
||
LIST_FOR_EACH (br, node, &all_bridges) {
|
||
struct port *port;
|
||
|
||
HMAP_FOR_EACH (port, hmap_node, &br->ports) {
|
||
struct iface *iface;
|
||
|
||
LIST_FOR_EACH (iface, port_elem, &port->ifaces) {
|
||
iface_refresh_stats(iface);
|
||
iface_refresh_status(iface);
|
||
}
|
||
}
|
||
bridge_refresh_controller_status(br);
|
||
}
|
||
refresh_system_stats(cfg);
|
||
ovsdb_idl_txn_commit(txn);
|
||
ovsdb_idl_txn_destroy(txn); /* XXX */
|
||
}
|
||
|
||
stats_timer = time_msec() + STATS_INTERVAL;
|
||
}
|
||
|
||
if (time_msec() >= db_limiter) {
|
||
struct ovsdb_idl_txn *txn;
|
||
bool changed = false;
|
||
|
||
txn = ovsdb_idl_txn_create(idl);
|
||
LIST_FOR_EACH (br, node, &all_bridges) {
|
||
struct port *port;
|
||
|
||
HMAP_FOR_EACH (port, hmap_node, &br->ports) {
|
||
struct iface *iface;
|
||
|
||
LIST_FOR_EACH (iface, port_elem, &port->ifaces) {
|
||
changed = iface_refresh_cfm_stats(iface) || changed;
|
||
changed = iface_refresh_lacp_stats(iface) || changed;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (changed) {
|
||
db_limiter = time_msec() + DB_LIMIT_INTERVAL;
|
||
}
|
||
|
||
ovsdb_idl_txn_commit(txn);
|
||
ovsdb_idl_txn_destroy(txn);
|
||
}
|
||
}
|
||
|
||
void
|
||
bridge_wait(void)
|
||
{
|
||
struct bridge *br;
|
||
|
||
LIST_FOR_EACH (br, node, &all_bridges) {
|
||
struct port *port;
|
||
|
||
ofproto_wait(br->ofproto);
|
||
mac_learning_wait(br->ml);
|
||
HMAP_FOR_EACH (port, hmap_node, &br->ports) {
|
||
port_wait(port);
|
||
}
|
||
}
|
||
ovsdb_idl_wait(idl);
|
||
poll_timer_wait_until(stats_timer);
|
||
|
||
if (db_limiter > time_msec()) {
|
||
poll_timer_wait_until(db_limiter);
|
||
}
|
||
}
|
||
|
||
/* Forces 'br' to revalidate all of its flows. This is appropriate when 'br''s
|
||
* configuration changes. */
|
||
static void
|
||
bridge_flush(struct bridge *br)
|
||
{
|
||
COVERAGE_INC(bridge_flush);
|
||
br->flush = true;
|
||
}
|
||
|
||
/* Bridge unixctl user interface functions. */
|
||
static void
|
||
bridge_unixctl_fdb_show(struct unixctl_conn *conn,
|
||
const char *args, void *aux OVS_UNUSED)
|
||
{
|
||
struct ds ds = DS_EMPTY_INITIALIZER;
|
||
const struct bridge *br;
|
||
const struct mac_entry *e;
|
||
|
||
br = bridge_lookup(args);
|
||
if (!br) {
|
||
unixctl_command_reply(conn, 501, "no such bridge");
|
||
return;
|
||
}
|
||
|
||
ds_put_cstr(&ds, " port VLAN MAC Age\n");
|
||
LIST_FOR_EACH (e, lru_node, &br->ml->lrus) {
|
||
struct port *port = e->port.p;
|
||
ds_put_format(&ds, "%5d %4d "ETH_ADDR_FMT" %3d\n",
|
||
port_get_an_iface(port)->dp_ifidx,
|
||
e->vlan, ETH_ADDR_ARGS(e->mac), mac_entry_age(e));
|
||
}
|
||
unixctl_command_reply(conn, 200, ds_cstr(&ds));
|
||
ds_destroy(&ds);
|
||
}
|
||
|
||
/* CFM unixctl user interface functions. */
|
||
static void
|
||
cfm_unixctl_show(struct unixctl_conn *conn,
|
||
const char *args, void *aux OVS_UNUSED)
|
||
{
|
||
struct ds ds = DS_EMPTY_INITIALIZER;
|
||
struct iface *iface;
|
||
const struct cfm *cfm;
|
||
|
||
iface = iface_find(args);
|
||
if (!iface) {
|
||
unixctl_command_reply(conn, 501, "no such interface");
|
||
return;
|
||
}
|
||
|
||
cfm = ofproto_iface_get_cfm(iface->port->bridge->ofproto, iface->dp_ifidx);
|
||
|
||
if (!cfm) {
|
||
unixctl_command_reply(conn, 501, "CFM not enabled");
|
||
return;
|
||
}
|
||
|
||
cfm_dump_ds(cfm, &ds);
|
||
unixctl_command_reply(conn, 200, ds_cstr(&ds));
|
||
ds_destroy(&ds);
|
||
}
|
||
|
||
/* QoS unixctl user interface functions. */
|
||
|
||
struct qos_unixctl_show_cbdata {
|
||
struct ds *ds;
|
||
struct iface *iface;
|
||
};
|
||
|
||
static void
|
||
qos_unixctl_show_cb(unsigned int queue_id,
|
||
const struct shash *details,
|
||
void *aux)
|
||
{
|
||
struct qos_unixctl_show_cbdata *data = aux;
|
||
struct ds *ds = data->ds;
|
||
struct iface *iface = data->iface;
|
||
struct netdev_queue_stats stats;
|
||
struct shash_node *node;
|
||
int error;
|
||
|
||
ds_put_cstr(ds, "\n");
|
||
if (queue_id) {
|
||
ds_put_format(ds, "Queue %u:\n", queue_id);
|
||
} else {
|
||
ds_put_cstr(ds, "Default:\n");
|
||
}
|
||
|
||
SHASH_FOR_EACH (node, details) {
|
||
ds_put_format(ds, "\t%s: %s\n", node->name, (char *)node->data);
|
||
}
|
||
|
||
error = netdev_get_queue_stats(iface->netdev, queue_id, &stats);
|
||
if (!error) {
|
||
if (stats.tx_packets != UINT64_MAX) {
|
||
ds_put_format(ds, "\ttx_packets: %"PRIu64"\n", stats.tx_packets);
|
||
}
|
||
|
||
if (stats.tx_bytes != UINT64_MAX) {
|
||
ds_put_format(ds, "\ttx_bytes: %"PRIu64"\n", stats.tx_bytes);
|
||
}
|
||
|
||
if (stats.tx_errors != UINT64_MAX) {
|
||
ds_put_format(ds, "\ttx_errors: %"PRIu64"\n", stats.tx_errors);
|
||
}
|
||
} else {
|
||
ds_put_format(ds, "\tFailed to get statistics for queue %u: %s",
|
||
queue_id, strerror(error));
|
||
}
|
||
}
|
||
|
||
static void
|
||
qos_unixctl_show(struct unixctl_conn *conn,
|
||
const char *args, void *aux OVS_UNUSED)
|
||
{
|
||
struct ds ds = DS_EMPTY_INITIALIZER;
|
||
struct shash sh = SHASH_INITIALIZER(&sh);
|
||
struct iface *iface;
|
||
const char *type;
|
||
struct shash_node *node;
|
||
struct qos_unixctl_show_cbdata data;
|
||
int error;
|
||
|
||
iface = iface_find(args);
|
||
if (!iface) {
|
||
unixctl_command_reply(conn, 501, "no such interface");
|
||
return;
|
||
}
|
||
|
||
netdev_get_qos(iface->netdev, &type, &sh);
|
||
|
||
if (*type != '\0') {
|
||
ds_put_format(&ds, "QoS: %s %s\n", iface->name, type);
|
||
|
||
SHASH_FOR_EACH (node, &sh) {
|
||
ds_put_format(&ds, "%s: %s\n", node->name, (char *)node->data);
|
||
}
|
||
|
||
data.ds = &ds;
|
||
data.iface = iface;
|
||
error = netdev_dump_queues(iface->netdev, qos_unixctl_show_cb, &data);
|
||
|
||
if (error) {
|
||
ds_put_format(&ds, "failed to dump queues: %s", strerror(error));
|
||
}
|
||
unixctl_command_reply(conn, 200, ds_cstr(&ds));
|
||
} else {
|
||
ds_put_format(&ds, "QoS not configured on %s\n", iface->name);
|
||
unixctl_command_reply(conn, 501, ds_cstr(&ds));
|
||
}
|
||
|
||
shash_destroy_free_data(&sh);
|
||
ds_destroy(&ds);
|
||
}
|
||
|
||
/* Bridge reconfiguration functions. */
|
||
static struct bridge *
|
||
bridge_create(const struct ovsrec_bridge *br_cfg)
|
||
{
|
||
struct bridge *br;
|
||
int error;
|
||
|
||
assert(!bridge_lookup(br_cfg->name));
|
||
br = xzalloc(sizeof *br);
|
||
|
||
error = dpif_create_and_open(br_cfg->name, br_cfg->datapath_type,
|
||
&br->dpif);
|
||
if (error) {
|
||
free(br);
|
||
return NULL;
|
||
}
|
||
|
||
error = ofproto_create(br_cfg->name, br_cfg->datapath_type, &bridge_ofhooks,
|
||
br, &br->ofproto);
|
||
if (error) {
|
||
VLOG_ERR("failed to create switch %s: %s", br_cfg->name,
|
||
strerror(error));
|
||
dpif_delete(br->dpif);
|
||
dpif_close(br->dpif);
|
||
free(br);
|
||
return NULL;
|
||
}
|
||
|
||
br->name = xstrdup(br_cfg->name);
|
||
br->cfg = br_cfg;
|
||
br->ml = mac_learning_create();
|
||
eth_addr_nicira_random(br->default_ea);
|
||
|
||
hmap_init(&br->ports);
|
||
hmap_init(&br->ifaces);
|
||
shash_init(&br->iface_by_name);
|
||
|
||
br->flush = false;
|
||
|
||
list_push_back(&all_bridges, &br->node);
|
||
|
||
VLOG_INFO("created bridge %s on %s", br->name, dpif_name(br->dpif));
|
||
|
||
return br;
|
||
}
|
||
|
||
static void
|
||
bridge_destroy(struct bridge *br)
|
||
{
|
||
if (br) {
|
||
struct port *port, *next;
|
||
int error;
|
||
int i;
|
||
|
||
HMAP_FOR_EACH_SAFE (port, next, hmap_node, &br->ports) {
|
||
port_destroy(port);
|
||
}
|
||
for (i = 0; i < MAX_MIRRORS; i++) {
|
||
mirror_destroy(br->mirrors[i]);
|
||
}
|
||
list_remove(&br->node);
|
||
ofproto_destroy(br->ofproto);
|
||
error = dpif_delete(br->dpif);
|
||
if (error && error != ENOENT) {
|
||
VLOG_ERR("failed to delete %s: %s",
|
||
dpif_name(br->dpif), strerror(error));
|
||
}
|
||
dpif_close(br->dpif);
|
||
mac_learning_destroy(br->ml);
|
||
hmap_destroy(&br->ifaces);
|
||
hmap_destroy(&br->ports);
|
||
shash_destroy(&br->iface_by_name);
|
||
free(br->synth_local_iface.type);
|
||
free(br->name);
|
||
free(br);
|
||
}
|
||
}
|
||
|
||
static struct bridge *
|
||
bridge_lookup(const char *name)
|
||
{
|
||
struct bridge *br;
|
||
|
||
LIST_FOR_EACH (br, node, &all_bridges) {
|
||
if (!strcmp(br->name, name)) {
|
||
return br;
|
||
}
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
/* Handle requests for a listing of all flows known by the OpenFlow
|
||
* stack, including those normally hidden. */
|
||
static void
|
||
bridge_unixctl_dump_flows(struct unixctl_conn *conn,
|
||
const char *args, void *aux OVS_UNUSED)
|
||
{
|
||
struct bridge *br;
|
||
struct ds results;
|
||
|
||
br = bridge_lookup(args);
|
||
if (!br) {
|
||
unixctl_command_reply(conn, 501, "Unknown bridge");
|
||
return;
|
||
}
|
||
|
||
ds_init(&results);
|
||
ofproto_get_all_flows(br->ofproto, &results);
|
||
|
||
unixctl_command_reply(conn, 200, ds_cstr(&results));
|
||
ds_destroy(&results);
|
||
}
|
||
|
||
/* "bridge/reconnect [BRIDGE]": makes BRIDGE drop all of its controller
|
||
* connections and reconnect. If BRIDGE is not specified, then all bridges
|
||
* drop their controller connections and reconnect. */
|
||
static void
|
||
bridge_unixctl_reconnect(struct unixctl_conn *conn,
|
||
const char *args, void *aux OVS_UNUSED)
|
||
{
|
||
struct bridge *br;
|
||
if (args[0] != '\0') {
|
||
br = bridge_lookup(args);
|
||
if (!br) {
|
||
unixctl_command_reply(conn, 501, "Unknown bridge");
|
||
return;
|
||
}
|
||
ofproto_reconnect_controllers(br->ofproto);
|
||
} else {
|
||
LIST_FOR_EACH (br, node, &all_bridges) {
|
||
ofproto_reconnect_controllers(br->ofproto);
|
||
}
|
||
}
|
||
unixctl_command_reply(conn, 200, NULL);
|
||
}
|
||
|
||
static int
|
||
bridge_run_one(struct bridge *br)
|
||
{
|
||
struct port *port;
|
||
int error;
|
||
|
||
error = ofproto_run1(br->ofproto);
|
||
if (error) {
|
||
return error;
|
||
}
|
||
|
||
mac_learning_run(br->ml, ofproto_get_revalidate_set(br->ofproto));
|
||
|
||
HMAP_FOR_EACH (port, hmap_node, &br->ports) {
|
||
port_run(port);
|
||
}
|
||
|
||
error = ofproto_run2(br->ofproto, br->flush);
|
||
br->flush = false;
|
||
|
||
return error;
|
||
}
|
||
|
||
static size_t
|
||
bridge_get_controllers(const struct bridge *br,
|
||
struct ovsrec_controller ***controllersp)
|
||
{
|
||
struct ovsrec_controller **controllers;
|
||
size_t n_controllers;
|
||
|
||
controllers = br->cfg->controller;
|
||
n_controllers = br->cfg->n_controller;
|
||
|
||
if (n_controllers == 1 && !strcmp(controllers[0]->target, "none")) {
|
||
controllers = NULL;
|
||
n_controllers = 0;
|
||
}
|
||
|
||
if (controllersp) {
|
||
*controllersp = controllers;
|
||
}
|
||
return n_controllers;
|
||
}
|
||
|
||
static void
|
||
bridge_reconfigure_one(struct bridge *br)
|
||
{
|
||
enum ofproto_fail_mode fail_mode;
|
||
struct port *port, *next;
|
||
struct shash_node *node;
|
||
struct shash new_ports;
|
||
size_t i;
|
||
|
||
/* Collect new ports. */
|
||
shash_init(&new_ports);
|
||
for (i = 0; i < br->cfg->n_ports; i++) {
|
||
const char *name = br->cfg->ports[i]->name;
|
||
if (!shash_add_once(&new_ports, name, br->cfg->ports[i])) {
|
||
VLOG_WARN("bridge %s: %s specified twice as bridge port",
|
||
br->name, name);
|
||
}
|
||
}
|
||
if (!shash_find(&new_ports, br->name)) {
|
||
struct dpif_port dpif_port;
|
||
char *type;
|
||
|
||
VLOG_WARN("bridge %s: no port named %s, synthesizing one",
|
||
br->name, br->name);
|
||
|
||
dpif_port_query_by_number(br->dpif, ODPP_LOCAL, &dpif_port);
|
||
type = xstrdup(dpif_port.type ? dpif_port.type : "internal");
|
||
dpif_port_destroy(&dpif_port);
|
||
|
||
br->synth_local_port.interfaces = &br->synth_local_ifacep;
|
||
br->synth_local_port.n_interfaces = 1;
|
||
br->synth_local_port.name = br->name;
|
||
|
||
br->synth_local_iface.name = br->name;
|
||
free(br->synth_local_iface.type);
|
||
br->synth_local_iface.type = type;
|
||
|
||
br->synth_local_ifacep = &br->synth_local_iface;
|
||
|
||
shash_add(&new_ports, br->name, &br->synth_local_port);
|
||
}
|
||
|
||
/* Get rid of deleted ports.
|
||
* Get rid of deleted interfaces on ports that still exist. */
|
||
HMAP_FOR_EACH_SAFE (port, next, hmap_node, &br->ports) {
|
||
const struct ovsrec_port *port_cfg;
|
||
|
||
port_cfg = shash_find_data(&new_ports, port->name);
|
||
if (!port_cfg) {
|
||
port_destroy(port);
|
||
} else {
|
||
port_del_ifaces(port, port_cfg);
|
||
}
|
||
}
|
||
|
||
/* Create new ports.
|
||
* Add new interfaces to existing ports.
|
||
* Reconfigure existing ports. */
|
||
SHASH_FOR_EACH (node, &new_ports) {
|
||
struct port *port = port_lookup(br, node->name);
|
||
if (!port) {
|
||
port = port_create(br, node->name);
|
||
}
|
||
|
||
port_reconfigure(port, node->data);
|
||
if (list_is_empty(&port->ifaces)) {
|
||
VLOG_WARN("bridge %s: port %s has no interfaces, dropping",
|
||
br->name, port->name);
|
||
port_destroy(port);
|
||
}
|
||
}
|
||
shash_destroy(&new_ports);
|
||
|
||
/* Set the fail-mode */
|
||
fail_mode = !br->cfg->fail_mode
|
||
|| !strcmp(br->cfg->fail_mode, "standalone")
|
||
? OFPROTO_FAIL_STANDALONE
|
||
: OFPROTO_FAIL_SECURE;
|
||
if (ofproto_get_fail_mode(br->ofproto) != fail_mode
|
||
&& !ofproto_has_primary_controller(br->ofproto)) {
|
||
ofproto_flush_flows(br->ofproto);
|
||
}
|
||
ofproto_set_fail_mode(br->ofproto, fail_mode);
|
||
|
||
/* Delete all flows if we're switching from connected to standalone or vice
|
||
* versa. (XXX Should we delete all flows if we are switching from one
|
||
* controller to another?) */
|
||
|
||
/* Configure OpenFlow controller connection snooping. */
|
||
if (!ofproto_has_snoops(br->ofproto)) {
|
||
struct sset snoops;
|
||
|
||
sset_init(&snoops);
|
||
sset_add_and_free(&snoops, xasprintf("punix:%s/%s.snoop",
|
||
ovs_rundir(), br->name));
|
||
ofproto_set_snoops(br->ofproto, &snoops);
|
||
sset_destroy(&snoops);
|
||
}
|
||
|
||
mirror_reconfigure(br);
|
||
}
|
||
|
||
/* Initializes 'oc' appropriately as a management service controller for
|
||
* 'br'.
|
||
*
|
||
* The caller must free oc->target when it is no longer needed. */
|
||
static void
|
||
bridge_ofproto_controller_for_mgmt(const struct bridge *br,
|
||
struct ofproto_controller *oc)
|
||
{
|
||
oc->target = xasprintf("punix:%s/%s.mgmt", ovs_rundir(), br->name);
|
||
oc->max_backoff = 0;
|
||
oc->probe_interval = 60;
|
||
oc->band = OFPROTO_OUT_OF_BAND;
|
||
oc->rate_limit = 0;
|
||
oc->burst_limit = 0;
|
||
}
|
||
|
||
/* Converts ovsrec_controller 'c' into an ofproto_controller in 'oc'. */
|
||
static void
|
||
bridge_ofproto_controller_from_ovsrec(const struct ovsrec_controller *c,
|
||
struct ofproto_controller *oc)
|
||
{
|
||
oc->target = c->target;
|
||
oc->max_backoff = c->max_backoff ? *c->max_backoff / 1000 : 8;
|
||
oc->probe_interval = c->inactivity_probe ? *c->inactivity_probe / 1000 : 5;
|
||
oc->band = (!c->connection_mode || !strcmp(c->connection_mode, "in-band")
|
||
? OFPROTO_IN_BAND : OFPROTO_OUT_OF_BAND);
|
||
oc->rate_limit = c->controller_rate_limit ? *c->controller_rate_limit : 0;
|
||
oc->burst_limit = (c->controller_burst_limit
|
||
? *c->controller_burst_limit : 0);
|
||
}
|
||
|
||
/* Configures the IP stack for 'br''s local interface properly according to the
|
||
* configuration in 'c'. */
|
||
static void
|
||
bridge_configure_local_iface_netdev(struct bridge *br,
|
||
struct ovsrec_controller *c)
|
||
{
|
||
struct netdev *netdev;
|
||
struct in_addr mask, gateway;
|
||
|
||
struct iface *local_iface;
|
||
struct in_addr ip;
|
||
|
||
/* If there's no local interface or no IP address, give up. */
|
||
local_iface = iface_from_dp_ifidx(br, ODPP_LOCAL);
|
||
if (!local_iface || !c->local_ip || !inet_aton(c->local_ip, &ip)) {
|
||
return;
|
||
}
|
||
|
||
/* Bring up the local interface. */
|
||
netdev = local_iface->netdev;
|
||
netdev_turn_flags_on(netdev, NETDEV_UP, true);
|
||
|
||
/* Configure the IP address and netmask. */
|
||
if (!c->local_netmask
|
||
|| !inet_aton(c->local_netmask, &mask)
|
||
|| !mask.s_addr) {
|
||
mask.s_addr = guess_netmask(ip.s_addr);
|
||
}
|
||
if (!netdev_set_in4(netdev, ip, mask)) {
|
||
VLOG_INFO("bridge %s: configured IP address "IP_FMT", netmask "IP_FMT,
|
||
br->name, IP_ARGS(&ip.s_addr), IP_ARGS(&mask.s_addr));
|
||
}
|
||
|
||
/* Configure the default gateway. */
|
||
if (c->local_gateway
|
||
&& inet_aton(c->local_gateway, &gateway)
|
||
&& gateway.s_addr) {
|
||
if (!netdev_add_router(netdev, gateway)) {
|
||
VLOG_INFO("bridge %s: configured gateway "IP_FMT,
|
||
br->name, IP_ARGS(&gateway.s_addr));
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
bridge_reconfigure_remotes(struct bridge *br,
|
||
const struct sockaddr_in *managers,
|
||
size_t n_managers)
|
||
{
|
||
const char *disable_ib_str, *queue_id_str;
|
||
bool disable_in_band = false;
|
||
int queue_id;
|
||
|
||
struct ovsrec_controller **controllers;
|
||
size_t n_controllers;
|
||
bool had_primary;
|
||
|
||
struct ofproto_controller *ocs;
|
||
size_t n_ocs;
|
||
size_t i;
|
||
|
||
/* Check if we should disable in-band control on this bridge. */
|
||
disable_ib_str = bridge_get_other_config(br->cfg, "disable-in-band");
|
||
if (disable_ib_str && !strcmp(disable_ib_str, "true")) {
|
||
disable_in_band = true;
|
||
}
|
||
|
||
/* Set OpenFlow queue ID for in-band control. */
|
||
queue_id_str = bridge_get_other_config(br->cfg, "in-band-queue");
|
||
queue_id = queue_id_str ? strtol(queue_id_str, NULL, 10) : -1;
|
||
ofproto_set_in_band_queue(br->ofproto, queue_id);
|
||
|
||
if (disable_in_band) {
|
||
ofproto_set_extra_in_band_remotes(br->ofproto, NULL, 0);
|
||
} else {
|
||
ofproto_set_extra_in_band_remotes(br->ofproto, managers, n_managers);
|
||
}
|
||
had_primary = ofproto_has_primary_controller(br->ofproto);
|
||
|
||
n_controllers = bridge_get_controllers(br, &controllers);
|
||
|
||
ocs = xmalloc((n_controllers + 1) * sizeof *ocs);
|
||
n_ocs = 0;
|
||
|
||
bridge_ofproto_controller_for_mgmt(br, &ocs[n_ocs++]);
|
||
for (i = 0; i < n_controllers; i++) {
|
||
struct ovsrec_controller *c = controllers[i];
|
||
|
||
if (!strncmp(c->target, "punix:", 6)
|
||
|| !strncmp(c->target, "unix:", 5)) {
|
||
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
|
||
|
||
/* Prevent remote ovsdb-server users from accessing arbitrary Unix
|
||
* domain sockets and overwriting arbitrary local files. */
|
||
VLOG_ERR_RL(&rl, "%s: not adding Unix domain socket controller "
|
||
"\"%s\" due to possibility for remote exploit",
|
||
dpif_name(br->dpif), c->target);
|
||
continue;
|
||
}
|
||
|
||
bridge_configure_local_iface_netdev(br, c);
|
||
bridge_ofproto_controller_from_ovsrec(c, &ocs[n_ocs]);
|
||
if (disable_in_band) {
|
||
ocs[n_ocs].band = OFPROTO_OUT_OF_BAND;
|
||
}
|
||
n_ocs++;
|
||
}
|
||
|
||
ofproto_set_controllers(br->ofproto, ocs, n_ocs);
|
||
free(ocs[0].target); /* From bridge_ofproto_controller_for_mgmt(). */
|
||
free(ocs);
|
||
|
||
if (had_primary != ofproto_has_primary_controller(br->ofproto)) {
|
||
ofproto_flush_flows(br->ofproto);
|
||
}
|
||
|
||
/* If there are no controllers and the bridge is in standalone
|
||
* mode, set up a flow that matches every packet and directs
|
||
* them to OFPP_NORMAL (which goes to us). Otherwise, the
|
||
* switch is in secure mode and we won't pass any traffic until
|
||
* a controller has been defined and it tells us to do so. */
|
||
if (!n_controllers
|
||
&& ofproto_get_fail_mode(br->ofproto) == OFPROTO_FAIL_STANDALONE) {
|
||
union ofp_action action;
|
||
struct cls_rule rule;
|
||
|
||
memset(&action, 0, sizeof action);
|
||
action.type = htons(OFPAT_OUTPUT);
|
||
action.output.len = htons(sizeof action);
|
||
action.output.port = htons(OFPP_NORMAL);
|
||
cls_rule_init_catchall(&rule, 0);
|
||
ofproto_add_flow(br->ofproto, &rule, &action, 1);
|
||
}
|
||
}
|
||
|
||
static void
|
||
bridge_get_all_ifaces(const struct bridge *br, struct shash *ifaces)
|
||
{
|
||
struct port *port;
|
||
|
||
shash_init(ifaces);
|
||
HMAP_FOR_EACH (port, hmap_node, &br->ports) {
|
||
struct iface *iface;
|
||
|
||
LIST_FOR_EACH (iface, port_elem, &port->ifaces) {
|
||
shash_add_once(ifaces, iface->name, iface);
|
||
}
|
||
if (!list_is_short(&port->ifaces) && port->cfg->bond_fake_iface) {
|
||
shash_add_once(ifaces, port->name, NULL);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* For robustness, in case the administrator moves around datapath ports behind
|
||
* our back, we re-check all the datapath port numbers here.
|
||
*
|
||
* This function will set the 'dp_ifidx' members of interfaces that have
|
||
* disappeared to -1, so only call this function from a context where those
|
||
* 'struct iface's will be removed from the bridge. Otherwise, the -1
|
||
* 'dp_ifidx'es will cause trouble later when we try to send them to the
|
||
* datapath, which doesn't support UINT16_MAX+1 ports. */
|
||
static void
|
||
bridge_fetch_dp_ifaces(struct bridge *br)
|
||
{
|
||
struct dpif_port_dump dump;
|
||
struct dpif_port dpif_port;
|
||
struct port *port;
|
||
|
||
/* Reset all interface numbers. */
|
||
HMAP_FOR_EACH (port, hmap_node, &br->ports) {
|
||
struct iface *iface;
|
||
|
||
LIST_FOR_EACH (iface, port_elem, &port->ifaces) {
|
||
iface->dp_ifidx = -1;
|
||
}
|
||
}
|
||
hmap_clear(&br->ifaces);
|
||
|
||
DPIF_PORT_FOR_EACH (&dpif_port, &dump, br->dpif) {
|
||
struct iface *iface = iface_lookup(br, dpif_port.name);
|
||
if (iface) {
|
||
if (iface->dp_ifidx >= 0) {
|
||
VLOG_WARN("%s reported interface %s twice",
|
||
dpif_name(br->dpif), dpif_port.name);
|
||
} else if (iface_from_dp_ifidx(br, dpif_port.port_no)) {
|
||
VLOG_WARN("%s reported interface %"PRIu16" twice",
|
||
dpif_name(br->dpif), dpif_port.port_no);
|
||
} else {
|
||
iface->dp_ifidx = dpif_port.port_no;
|
||
hmap_insert(&br->ifaces, &iface->dp_ifidx_node,
|
||
hash_int(iface->dp_ifidx, 0));
|
||
}
|
||
|
||
iface_set_ofport(iface->cfg,
|
||
(iface->dp_ifidx >= 0
|
||
? odp_port_to_ofp_port(iface->dp_ifidx)
|
||
: -1));
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Bridge packet processing functions. */
|
||
|
||
static bool
|
||
set_dst(struct dst *dst, const struct flow *flow,
|
||
const struct port *in_port, const struct port *out_port,
|
||
tag_type *tags)
|
||
{
|
||
dst->vlan = (out_port->vlan >= 0 ? OFP_VLAN_NONE
|
||
: in_port->vlan >= 0 ? in_port->vlan
|
||
: flow->vlan_tci == 0 ? OFP_VLAN_NONE
|
||
: vlan_tci_to_vid(flow->vlan_tci));
|
||
|
||
dst->iface = (!out_port->bond
|
||
? port_get_an_iface(out_port)
|
||
: bond_choose_output_slave(out_port->bond, flow,
|
||
dst->vlan, tags));
|
||
|
||
return dst->iface != NULL;
|
||
}
|
||
|
||
static int
|
||
mirror_mask_ffs(mirror_mask_t mask)
|
||
{
|
||
BUILD_ASSERT_DECL(sizeof(unsigned int) >= sizeof(mask));
|
||
return ffs(mask);
|
||
}
|
||
|
||
static void
|
||
dst_set_init(struct dst_set *set)
|
||
{
|
||
set->dsts = set->builtin;
|
||
set->n = 0;
|
||
set->allocated = ARRAY_SIZE(set->builtin);
|
||
}
|
||
|
||
static void
|
||
dst_set_add(struct dst_set *set, const struct dst *dst)
|
||
{
|
||
if (set->n >= set->allocated) {
|
||
size_t new_allocated;
|
||
struct dst *new_dsts;
|
||
|
||
new_allocated = set->allocated * 2;
|
||
new_dsts = xmalloc(new_allocated * sizeof *new_dsts);
|
||
memcpy(new_dsts, set->dsts, set->n * sizeof *new_dsts);
|
||
|
||
dst_set_free(set);
|
||
|
||
set->dsts = new_dsts;
|
||
set->allocated = new_allocated;
|
||
}
|
||
set->dsts[set->n++] = *dst;
|
||
}
|
||
|
||
static void
|
||
dst_set_free(struct dst_set *set)
|
||
{
|
||
if (set->dsts != set->builtin) {
|
||
free(set->dsts);
|
||
}
|
||
}
|
||
|
||
static bool
|
||
dst_is_duplicate(const struct dst_set *set, const struct dst *test)
|
||
{
|
||
size_t i;
|
||
for (i = 0; i < set->n; i++) {
|
||
if (set->dsts[i].vlan == test->vlan
|
||
&& set->dsts[i].iface == test->iface) {
|
||
return true;
|
||
}
|
||
}
|
||
return false;
|
||
}
|
||
|
||
static bool
|
||
port_trunks_vlan(const struct port *port, uint16_t vlan)
|
||
{
|
||
return (port->vlan < 0
|
||
&& (!port->trunks || bitmap_is_set(port->trunks, vlan)));
|
||
}
|
||
|
||
static bool
|
||
port_includes_vlan(const struct port *port, uint16_t vlan)
|
||
{
|
||
return vlan == port->vlan || port_trunks_vlan(port, vlan);
|
||
}
|
||
|
||
static bool
|
||
port_is_floodable(const struct port *port)
|
||
{
|
||
struct iface *iface;
|
||
|
||
LIST_FOR_EACH (iface, port_elem, &port->ifaces) {
|
||
if (!ofproto_port_is_floodable(port->bridge->ofproto,
|
||
iface->dp_ifidx)) {
|
||
return false;
|
||
}
|
||
}
|
||
return true;
|
||
}
|
||
|
||
/* Returns an arbitrary interface within 'port'. */
|
||
static struct iface *
|
||
port_get_an_iface(const struct port *port)
|
||
{
|
||
return CONTAINER_OF(list_front(&port->ifaces), struct iface, port_elem);
|
||
}
|
||
|
||
static void
|
||
compose_dsts(const struct bridge *br, const struct flow *flow, uint16_t vlan,
|
||
const struct port *in_port, const struct port *out_port,
|
||
struct dst_set *set, tag_type *tags, uint16_t *nf_output_iface)
|
||
{
|
||
struct dst dst;
|
||
|
||
if (out_port == FLOOD_PORT) {
|
||
struct port *port;
|
||
|
||
HMAP_FOR_EACH (port, hmap_node, &br->ports) {
|
||
if (port != in_port
|
||
&& port_is_floodable(port)
|
||
&& port_includes_vlan(port, vlan)
|
||
&& !port->is_mirror_output_port
|
||
&& set_dst(&dst, flow, in_port, port, tags)) {
|
||
dst_set_add(set, &dst);
|
||
}
|
||
}
|
||
*nf_output_iface = NF_OUT_FLOOD;
|
||
} else if (out_port && set_dst(&dst, flow, in_port, out_port, tags)) {
|
||
dst_set_add(set, &dst);
|
||
*nf_output_iface = dst.iface->dp_ifidx;
|
||
}
|
||
}
|
||
|
||
static void
|
||
compose_mirror_dsts(const struct bridge *br, const struct flow *flow,
|
||
uint16_t vlan, const struct port *in_port,
|
||
struct dst_set *set, tag_type *tags)
|
||
{
|
||
mirror_mask_t mirrors;
|
||
int flow_vlan;
|
||
size_t i;
|
||
|
||
mirrors = in_port->src_mirrors;
|
||
for (i = 0; i < set->n; i++) {
|
||
mirrors |= set->dsts[i].iface->port->dst_mirrors;
|
||
}
|
||
|
||
if (!mirrors) {
|
||
return;
|
||
}
|
||
|
||
flow_vlan = vlan_tci_to_vid(flow->vlan_tci);
|
||
if (flow_vlan == 0) {
|
||
flow_vlan = OFP_VLAN_NONE;
|
||
}
|
||
|
||
while (mirrors) {
|
||
struct mirror *m = br->mirrors[mirror_mask_ffs(mirrors) - 1];
|
||
if (!m->n_vlans || vlan_is_mirrored(m, vlan)) {
|
||
struct dst dst;
|
||
|
||
if (m->out_port) {
|
||
if (set_dst(&dst, flow, in_port, m->out_port, tags)
|
||
&& !dst_is_duplicate(set, &dst)) {
|
||
dst_set_add(set, &dst);
|
||
}
|
||
} else {
|
||
struct port *port;
|
||
|
||
HMAP_FOR_EACH (port, hmap_node, &br->ports) {
|
||
if (port_includes_vlan(port, m->out_vlan)
|
||
&& set_dst(&dst, flow, in_port, port, tags))
|
||
{
|
||
if (port->vlan < 0) {
|
||
dst.vlan = m->out_vlan;
|
||
}
|
||
if (dst_is_duplicate(set, &dst)) {
|
||
continue;
|
||
}
|
||
|
||
/* Use the vlan tag on the original flow instead of
|
||
* the one passed in the vlan parameter. This ensures
|
||
* that we compare the vlan from before any implicit
|
||
* tagging tags place. This is necessary because
|
||
* dst->vlan is the final vlan, after removing implicit
|
||
* tags. */
|
||
if (port == in_port && dst.vlan == flow_vlan) {
|
||
/* Don't send out input port on same VLAN. */
|
||
continue;
|
||
}
|
||
dst_set_add(set, &dst);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
mirrors &= mirrors - 1;
|
||
}
|
||
}
|
||
|
||
static void
|
||
compose_actions(struct bridge *br, const struct flow *flow, uint16_t vlan,
|
||
const struct port *in_port, const struct port *out_port,
|
||
tag_type *tags, struct ofpbuf *actions,
|
||
uint16_t *nf_output_iface)
|
||
{
|
||
uint16_t initial_vlan, cur_vlan;
|
||
const struct dst *dst;
|
||
struct dst_set set;
|
||
|
||
dst_set_init(&set);
|
||
compose_dsts(br, flow, vlan, in_port, out_port, &set, tags,
|
||
nf_output_iface);
|
||
compose_mirror_dsts(br, flow, vlan, in_port, &set, tags);
|
||
|
||
/* Output all the packets we can without having to change the VLAN. */
|
||
initial_vlan = vlan_tci_to_vid(flow->vlan_tci);
|
||
if (initial_vlan == 0) {
|
||
initial_vlan = OFP_VLAN_NONE;
|
||
}
|
||
for (dst = set.dsts; dst < &set.dsts[set.n]; dst++) {
|
||
if (dst->vlan != initial_vlan) {
|
||
continue;
|
||
}
|
||
nl_msg_put_u32(actions, ODP_ACTION_ATTR_OUTPUT, dst->iface->dp_ifidx);
|
||
}
|
||
|
||
/* Then output the rest. */
|
||
cur_vlan = initial_vlan;
|
||
for (dst = set.dsts; dst < &set.dsts[set.n]; dst++) {
|
||
if (dst->vlan == initial_vlan) {
|
||
continue;
|
||
}
|
||
if (dst->vlan != cur_vlan) {
|
||
if (dst->vlan == OFP_VLAN_NONE) {
|
||
nl_msg_put_flag(actions, ODP_ACTION_ATTR_STRIP_VLAN);
|
||
} else {
|
||
ovs_be16 tci;
|
||
tci = htons(dst->vlan & VLAN_VID_MASK);
|
||
tci |= flow->vlan_tci & htons(VLAN_PCP_MASK);
|
||
nl_msg_put_be16(actions, ODP_ACTION_ATTR_SET_DL_TCI, tci);
|
||
}
|
||
cur_vlan = dst->vlan;
|
||
}
|
||
nl_msg_put_u32(actions, ODP_ACTION_ATTR_OUTPUT, dst->iface->dp_ifidx);
|
||
}
|
||
|
||
dst_set_free(&set);
|
||
}
|
||
|
||
/* Returns the effective vlan of a packet, taking into account both the
|
||
* 802.1Q header and implicitly tagged ports. A value of 0 indicates that
|
||
* the packet is untagged and -1 indicates it has an invalid header and
|
||
* should be dropped. */
|
||
static int flow_get_vlan(struct bridge *br, const struct flow *flow,
|
||
struct port *in_port, bool have_packet)
|
||
{
|
||
int vlan = vlan_tci_to_vid(flow->vlan_tci);
|
||
if (in_port->vlan >= 0) {
|
||
if (vlan) {
|
||
if (have_packet) {
|
||
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
|
||
VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %d tagged "
|
||
"packet received on port %s configured with "
|
||
"implicit VLAN %"PRIu16,
|
||
br->name, vlan, in_port->name, in_port->vlan);
|
||
}
|
||
return -1;
|
||
}
|
||
vlan = in_port->vlan;
|
||
} else {
|
||
if (!port_includes_vlan(in_port, vlan)) {
|
||
if (have_packet) {
|
||
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
|
||
VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %d tagged "
|
||
"packet received on port %s not configured for "
|
||
"trunking VLAN %d",
|
||
br->name, vlan, in_port->name, vlan);
|
||
}
|
||
return -1;
|
||
}
|
||
}
|
||
|
||
return vlan;
|
||
}
|
||
|
||
/* A VM broadcasts a gratuitous ARP to indicate that it has resumed after
|
||
* migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to
|
||
* indicate this; newer upstream kernels use gratuitous ARP requests. */
|
||
static bool
|
||
is_gratuitous_arp(const struct flow *flow)
|
||
{
|
||
return (flow->dl_type == htons(ETH_TYPE_ARP)
|
||
&& eth_addr_is_broadcast(flow->dl_dst)
|
||
&& (flow->nw_proto == ARP_OP_REPLY
|
||
|| (flow->nw_proto == ARP_OP_REQUEST
|
||
&& flow->nw_src == flow->nw_dst)));
|
||
}
|
||
|
||
static void
|
||
update_learning_table(struct bridge *br, const struct flow *flow, int vlan,
|
||
struct port *in_port)
|
||
{
|
||
struct mac_entry *mac;
|
||
|
||
if (!mac_learning_may_learn(br->ml, flow->dl_src, vlan)) {
|
||
return;
|
||
}
|
||
|
||
mac = mac_learning_insert(br->ml, flow->dl_src, vlan);
|
||
if (is_gratuitous_arp(flow)) {
|
||
/* We don't want to learn from gratuitous ARP packets that are
|
||
* reflected back over bond slaves so we lock the learning table. */
|
||
if (!in_port->bond) {
|
||
mac_entry_set_grat_arp_lock(mac);
|
||
} else if (mac_entry_is_grat_arp_locked(mac)) {
|
||
return;
|
||
}
|
||
}
|
||
|
||
if (mac_entry_is_new(mac) || mac->port.p != in_port) {
|
||
/* The log messages here could actually be useful in debugging,
|
||
* so keep the rate limit relatively high. */
|
||
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300);
|
||
VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is "
|
||
"on port %s in VLAN %d",
|
||
br->name, ETH_ADDR_ARGS(flow->dl_src),
|
||
in_port->name, vlan);
|
||
|
||
mac->port.p = in_port;
|
||
ofproto_revalidate(br->ofproto, mac_learning_changed(br->ml, mac));
|
||
}
|
||
}
|
||
|
||
/* Determines whether packets in 'flow' within 'br' should be forwarded or
|
||
* dropped. Returns true if they may be forwarded, false if they should be
|
||
* dropped.
|
||
*
|
||
* If 'have_packet' is true, it indicates that the caller is processing a
|
||
* received packet. If 'have_packet' is false, then the caller is just
|
||
* revalidating an existing flow because configuration has changed. Either
|
||
* way, 'have_packet' only affects logging (there is no point in logging errors
|
||
* during revalidation).
|
||
*
|
||
* Sets '*in_portp' to the input port. This will be a null pointer if
|
||
* flow->in_port does not designate a known input port (in which case
|
||
* is_admissible() returns false).
|
||
*
|
||
* When returning true, sets '*vlanp' to the effective VLAN of the input
|
||
* packet, as returned by flow_get_vlan().
|
||
*
|
||
* May also add tags to '*tags', although the current implementation only does
|
||
* so in one special case.
|
||
*/
|
||
static bool
|
||
is_admissible(struct bridge *br, const struct flow *flow, bool have_packet,
|
||
tag_type *tags, int *vlanp, struct port **in_portp)
|
||
{
|
||
struct iface *in_iface;
|
||
struct port *in_port;
|
||
int vlan;
|
||
|
||
/* Find the interface and port structure for the received packet. */
|
||
in_iface = iface_from_dp_ifidx(br, flow->in_port);
|
||
if (!in_iface) {
|
||
/* No interface? Something fishy... */
|
||
if (have_packet) {
|
||
/* Odd. A few possible reasons here:
|
||
*
|
||
* - We deleted an interface but there are still a few packets
|
||
* queued up from it.
|
||
*
|
||
* - Someone externally added an interface (e.g. with "ovs-dpctl
|
||
* add-if") that we don't know about.
|
||
*
|
||
* - Packet arrived on the local port but the local port is not
|
||
* one of our bridge ports.
|
||
*/
|
||
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
|
||
|
||
VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown "
|
||
"interface %"PRIu16, br->name, flow->in_port);
|
||
}
|
||
|
||
*in_portp = NULL;
|
||
return false;
|
||
}
|
||
*in_portp = in_port = in_iface->port;
|
||
*vlanp = vlan = flow_get_vlan(br, flow, in_port, have_packet);
|
||
if (vlan < 0) {
|
||
return false;
|
||
}
|
||
|
||
/* Drop frames for reserved multicast addresses. */
|
||
if (eth_addr_is_reserved(flow->dl_dst)) {
|
||
return false;
|
||
}
|
||
|
||
/* Drop frames on ports reserved for mirroring. */
|
||
if (in_port->is_mirror_output_port) {
|
||
if (have_packet) {
|
||
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
|
||
VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port "
|
||
"%s, which is reserved exclusively for mirroring",
|
||
br->name, in_port->name);
|
||
}
|
||
return false;
|
||
}
|
||
|
||
if (in_port->bond) {
|
||
struct mac_entry *mac;
|
||
|
||
switch (bond_check_admissibility(in_port->bond, in_iface,
|
||
flow->dl_dst, tags)) {
|
||
case BV_ACCEPT:
|
||
break;
|
||
|
||
case BV_DROP:
|
||
return false;
|
||
|
||
case BV_DROP_IF_MOVED:
|
||
mac = mac_learning_lookup(br->ml, flow->dl_src, vlan, NULL);
|
||
if (mac && mac->port.p != in_port &&
|
||
(!is_gratuitous_arp(flow)
|
||
|| mac_entry_is_grat_arp_locked(mac))) {
|
||
return false;
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* If the composed actions may be applied to any packet in the given 'flow',
|
||
* returns true. Otherwise, the actions should only be applied to 'packet', or
|
||
* not at all, if 'packet' was NULL. */
|
||
static bool
|
||
process_flow(struct bridge *br, const struct flow *flow,
|
||
const struct ofpbuf *packet, struct ofpbuf *actions,
|
||
tag_type *tags, uint16_t *nf_output_iface)
|
||
{
|
||
struct port *in_port;
|
||
struct port *out_port;
|
||
struct mac_entry *mac;
|
||
int vlan;
|
||
|
||
/* Check whether we should drop packets in this flow. */
|
||
if (!is_admissible(br, flow, packet != NULL, tags, &vlan, &in_port)) {
|
||
out_port = NULL;
|
||
goto done;
|
||
}
|
||
|
||
/* Learn source MAC (but don't try to learn from revalidation). */
|
||
if (packet) {
|
||
update_learning_table(br, flow, vlan, in_port);
|
||
}
|
||
|
||
/* Determine output port. */
|
||
mac = mac_learning_lookup(br->ml, flow->dl_dst, vlan, tags);
|
||
if (mac) {
|
||
out_port = mac->port.p;
|
||
} else if (!packet && !eth_addr_is_multicast(flow->dl_dst)) {
|
||
/* If we are revalidating but don't have a learning entry then
|
||
* eject the flow. Installing a flow that floods packets opens
|
||
* up a window of time where we could learn from a packet reflected
|
||
* on a bond and blackhole packets before the learning table is
|
||
* updated to reflect the correct port. */
|
||
return false;
|
||
} else {
|
||
out_port = FLOOD_PORT;
|
||
}
|
||
|
||
/* Don't send packets out their input ports. */
|
||
if (in_port == out_port) {
|
||
out_port = NULL;
|
||
}
|
||
|
||
done:
|
||
if (in_port) {
|
||
compose_actions(br, flow, vlan, in_port, out_port, tags, actions,
|
||
nf_output_iface);
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
static bool
|
||
bridge_normal_ofhook_cb(const struct flow *flow, const struct ofpbuf *packet,
|
||
struct ofpbuf *actions, tag_type *tags,
|
||
uint16_t *nf_output_iface, void *br_)
|
||
{
|
||
struct bridge *br = br_;
|
||
|
||
COVERAGE_INC(bridge_process_flow);
|
||
return process_flow(br, flow, packet, actions, tags, nf_output_iface);
|
||
}
|
||
|
||
static bool
|
||
bridge_special_ofhook_cb(const struct flow *flow,
|
||
const struct ofpbuf *packet, void *br_)
|
||
{
|
||
struct iface *iface;
|
||
struct bridge *br = br_;
|
||
|
||
iface = iface_from_dp_ifidx(br, flow->in_port);
|
||
|
||
if (flow->dl_type == htons(ETH_TYPE_LACP)) {
|
||
if (iface && iface->port->lacp && packet) {
|
||
const struct lacp_pdu *pdu = parse_lacp_packet(packet);
|
||
if (pdu) {
|
||
lacp_process_pdu(iface->port->lacp, iface, pdu);
|
||
}
|
||
}
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
static void
|
||
bridge_account_flow_ofhook_cb(const struct flow *flow, tag_type tags,
|
||
const struct nlattr *actions,
|
||
size_t actions_len,
|
||
uint64_t n_bytes, void *br_)
|
||
{
|
||
struct bridge *br = br_;
|
||
const struct nlattr *a;
|
||
struct port *in_port;
|
||
tag_type dummy = 0;
|
||
unsigned int left;
|
||
int vlan;
|
||
|
||
/* Feed information from the active flows back into the learning table to
|
||
* ensure that table is always in sync with what is actually flowing
|
||
* through the datapath.
|
||
*
|
||
* We test that 'tags' is nonzero to ensure that only flows that include an
|
||
* OFPP_NORMAL action are used for learning. This works because
|
||
* bridge_normal_ofhook_cb() always sets a nonzero tag value. */
|
||
if (tags && is_admissible(br, flow, false, &dummy, &vlan, &in_port)) {
|
||
update_learning_table(br, flow, vlan, in_port);
|
||
}
|
||
|
||
/* Account for bond slave utilization. */
|
||
if (!br->has_bonded_ports) {
|
||
return;
|
||
}
|
||
NL_ATTR_FOR_EACH_UNSAFE (a, left, actions, actions_len) {
|
||
if (nl_attr_type(a) == ODP_ACTION_ATTR_OUTPUT) {
|
||
struct port *out_port = port_from_dp_ifidx(br, nl_attr_get_u32(a));
|
||
if (out_port && out_port->bond) {
|
||
uint16_t vlan = (flow->vlan_tci
|
||
? vlan_tci_to_vid(flow->vlan_tci)
|
||
: OFP_VLAN_NONE);
|
||
bond_account(out_port->bond, flow, vlan, n_bytes);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
bridge_account_checkpoint_ofhook_cb(void *br_)
|
||
{
|
||
struct bridge *br = br_;
|
||
struct port *port;
|
||
|
||
HMAP_FOR_EACH (port, hmap_node, &br->ports) {
|
||
if (port->bond) {
|
||
bond_rebalance(port->bond,
|
||
ofproto_get_revalidate_set(br->ofproto));
|
||
}
|
||
}
|
||
}
|
||
|
||
static uint16_t
|
||
bridge_autopath_ofhook_cb(const struct flow *flow, uint32_t ofp_port,
|
||
tag_type *tags, void *br_)
|
||
{
|
||
struct bridge *br = br_;
|
||
uint16_t odp_port = ofp_port_to_odp_port(ofp_port);
|
||
struct port *port = port_from_dp_ifidx(br, odp_port);
|
||
uint16_t ret;
|
||
|
||
if (!port) {
|
||
ret = ODPP_NONE;
|
||
} else if (list_is_short(&port->ifaces)) {
|
||
ret = odp_port;
|
||
} else {
|
||
struct iface *iface;
|
||
|
||
/* Autopath does not support VLAN hashing. */
|
||
iface = bond_choose_output_slave(port->bond, flow,
|
||
OFP_VLAN_NONE, tags);
|
||
ret = iface ? iface->dp_ifidx : ODPP_NONE;
|
||
}
|
||
|
||
return odp_port_to_ofp_port(ret);
|
||
}
|
||
|
||
static struct ofhooks bridge_ofhooks = {
|
||
bridge_normal_ofhook_cb,
|
||
bridge_special_ofhook_cb,
|
||
bridge_account_flow_ofhook_cb,
|
||
bridge_account_checkpoint_ofhook_cb,
|
||
bridge_autopath_ofhook_cb,
|
||
};
|
||
|
||
/* Port functions. */
|
||
|
||
static void
|
||
lacp_send_pdu_cb(void *iface_, const struct lacp_pdu *pdu)
|
||
{
|
||
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 10);
|
||
struct iface *iface = iface_;
|
||
uint8_t ea[ETH_ADDR_LEN];
|
||
int error;
|
||
|
||
error = netdev_get_etheraddr(iface->netdev, ea);
|
||
if (!error) {
|
||
struct lacp_pdu *packet_pdu;
|
||
struct ofpbuf packet;
|
||
|
||
ofpbuf_init(&packet, 0);
|
||
packet_pdu = eth_compose(&packet, eth_addr_lacp, ea, ETH_TYPE_LACP,
|
||
sizeof *packet_pdu);
|
||
*packet_pdu = *pdu;
|
||
error = netdev_send(iface->netdev, &packet);
|
||
if (error) {
|
||
VLOG_WARN_RL(&rl, "port %s: sending LACP PDU on iface %s failed "
|
||
"(%s)", iface->port->name, iface->name,
|
||
strerror(error));
|
||
}
|
||
ofpbuf_uninit(&packet);
|
||
} else {
|
||
VLOG_ERR_RL(&rl, "port %s: cannot obtain Ethernet address of iface "
|
||
"%s (%s)", iface->port->name, iface->name,
|
||
strerror(error));
|
||
}
|
||
}
|
||
|
||
static void
|
||
port_run(struct port *port)
|
||
{
|
||
if (port->lacp) {
|
||
lacp_run(port->lacp, lacp_send_pdu_cb);
|
||
}
|
||
|
||
if (port->bond) {
|
||
struct iface *iface;
|
||
|
||
LIST_FOR_EACH (iface, port_elem, &port->ifaces) {
|
||
bool may_enable = lacp_slave_may_enable(port->lacp, iface);
|
||
bond_slave_set_lacp_may_enable(port->bond, iface, may_enable);
|
||
}
|
||
|
||
bond_run(port->bond,
|
||
ofproto_get_revalidate_set(port->bridge->ofproto),
|
||
lacp_negotiated(port->lacp));
|
||
if (bond_should_send_learning_packets(port->bond)) {
|
||
port_send_learning_packets(port);
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
port_wait(struct port *port)
|
||
{
|
||
if (port->lacp) {
|
||
lacp_wait(port->lacp);
|
||
}
|
||
|
||
if (port->bond) {
|
||
bond_wait(port->bond);
|
||
}
|
||
}
|
||
|
||
static struct port *
|
||
port_create(struct bridge *br, const char *name)
|
||
{
|
||
struct port *port;
|
||
|
||
port = xzalloc(sizeof *port);
|
||
port->bridge = br;
|
||
port->vlan = -1;
|
||
port->trunks = NULL;
|
||
port->name = xstrdup(name);
|
||
list_init(&port->ifaces);
|
||
|
||
hmap_insert(&br->ports, &port->hmap_node, hash_string(port->name, 0));
|
||
|
||
VLOG_INFO("created port %s on bridge %s", port->name, br->name);
|
||
bridge_flush(br);
|
||
|
||
return port;
|
||
}
|
||
|
||
static const char *
|
||
get_port_other_config(const struct ovsrec_port *port, const char *key,
|
||
const char *default_value)
|
||
{
|
||
const char *value;
|
||
|
||
value = get_ovsrec_key_value(&port->header_, &ovsrec_port_col_other_config,
|
||
key);
|
||
return value ? value : default_value;
|
||
}
|
||
|
||
static const char *
|
||
get_interface_other_config(const struct ovsrec_interface *iface,
|
||
const char *key, const char *default_value)
|
||
{
|
||
const char *value;
|
||
|
||
value = get_ovsrec_key_value(&iface->header_,
|
||
&ovsrec_interface_col_other_config, key);
|
||
return value ? value : default_value;
|
||
}
|
||
|
||
static void
|
||
port_del_ifaces(struct port *port, const struct ovsrec_port *cfg)
|
||
{
|
||
struct iface *iface, *next;
|
||
struct sset new_ifaces;
|
||
size_t i;
|
||
|
||
/* Collect list of new interfaces. */
|
||
sset_init(&new_ifaces);
|
||
for (i = 0; i < cfg->n_interfaces; i++) {
|
||
const char *name = cfg->interfaces[i]->name;
|
||
sset_add(&new_ifaces, name);
|
||
}
|
||
|
||
/* Get rid of deleted interfaces. */
|
||
LIST_FOR_EACH_SAFE (iface, next, port_elem, &port->ifaces) {
|
||
if (!sset_contains(&new_ifaces, iface->name)) {
|
||
iface_destroy(iface);
|
||
}
|
||
}
|
||
|
||
sset_destroy(&new_ifaces);
|
||
}
|
||
|
||
/* Expires all MAC learning entries associated with 'port' and forces ofproto
|
||
* to revalidate every flow. */
|
||
static void
|
||
port_flush_macs(struct port *port)
|
||
{
|
||
struct bridge *br = port->bridge;
|
||
struct mac_learning *ml = br->ml;
|
||
struct mac_entry *mac, *next_mac;
|
||
|
||
bridge_flush(br);
|
||
LIST_FOR_EACH_SAFE (mac, next_mac, lru_node, &ml->lrus) {
|
||
if (mac->port.p == port) {
|
||
mac_learning_expire(ml, mac);
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
port_reconfigure(struct port *port, const struct ovsrec_port *cfg)
|
||
{
|
||
struct sset new_ifaces;
|
||
bool need_flush = false;
|
||
unsigned long *trunks;
|
||
int vlan;
|
||
size_t i;
|
||
|
||
port->cfg = cfg;
|
||
|
||
|
||
/* Add new interfaces and update 'cfg' member of existing ones. */
|
||
sset_init(&new_ifaces);
|
||
for (i = 0; i < cfg->n_interfaces; i++) {
|
||
const struct ovsrec_interface *if_cfg = cfg->interfaces[i];
|
||
struct iface *iface;
|
||
|
||
if (!sset_add(&new_ifaces, if_cfg->name)) {
|
||
VLOG_WARN("port %s: %s specified twice as port interface",
|
||
port->name, if_cfg->name);
|
||
iface_set_ofport(if_cfg, -1);
|
||
continue;
|
||
}
|
||
|
||
iface = iface_lookup(port->bridge, if_cfg->name);
|
||
if (iface) {
|
||
if (iface->port != port) {
|
||
VLOG_ERR("bridge %s: %s interface is on multiple ports, "
|
||
"removing from %s",
|
||
port->bridge->name, if_cfg->name, iface->port->name);
|
||
continue;
|
||
}
|
||
iface->cfg = if_cfg;
|
||
} else {
|
||
iface = iface_create(port, if_cfg);
|
||
}
|
||
|
||
/* Determine interface type. The local port always has type
|
||
* "internal". Other ports take their type from the database and
|
||
* default to "system" if none is specified. */
|
||
iface->type = (!strcmp(if_cfg->name, port->bridge->name) ? "internal"
|
||
: if_cfg->type[0] ? if_cfg->type
|
||
: "system");
|
||
}
|
||
sset_destroy(&new_ifaces);
|
||
|
||
/* Get VLAN tag. */
|
||
vlan = -1;
|
||
if (cfg->tag) {
|
||
if (list_is_short(&port->ifaces)) {
|
||
vlan = *cfg->tag;
|
||
if (vlan >= 0 && vlan <= 4095) {
|
||
VLOG_DBG("port %s: assigning VLAN tag %d", port->name, vlan);
|
||
} else {
|
||
vlan = -1;
|
||
}
|
||
} else {
|
||
/* It's possible that bonded, VLAN-tagged ports make sense. Maybe
|
||
* they even work as-is. But they have not been tested. */
|
||
VLOG_WARN("port %s: VLAN tags not supported on bonded ports",
|
||
port->name);
|
||
}
|
||
}
|
||
if (port->vlan != vlan) {
|
||
port->vlan = vlan;
|
||
need_flush = true;
|
||
}
|
||
|
||
/* Get trunked VLANs. */
|
||
trunks = NULL;
|
||
if (vlan < 0 && cfg->n_trunks) {
|
||
size_t n_errors;
|
||
|
||
trunks = bitmap_allocate(4096);
|
||
n_errors = 0;
|
||
for (i = 0; i < cfg->n_trunks; i++) {
|
||
int trunk = cfg->trunks[i];
|
||
if (trunk >= 0) {
|
||
bitmap_set1(trunks, trunk);
|
||
} else {
|
||
n_errors++;
|
||
}
|
||
}
|
||
if (n_errors) {
|
||
VLOG_ERR("port %s: invalid values for %zu trunk VLANs",
|
||
port->name, cfg->n_trunks);
|
||
}
|
||
if (n_errors == cfg->n_trunks) {
|
||
VLOG_ERR("port %s: no valid trunks, trunking all VLANs",
|
||
port->name);
|
||
bitmap_free(trunks);
|
||
trunks = NULL;
|
||
}
|
||
} else if (vlan >= 0 && cfg->n_trunks) {
|
||
VLOG_ERR("port %s: ignoring trunks in favor of implicit vlan",
|
||
port->name);
|
||
}
|
||
if (trunks == NULL
|
||
? port->trunks != NULL
|
||
: port->trunks == NULL || !bitmap_equal(trunks, port->trunks, 4096)) {
|
||
need_flush = true;
|
||
}
|
||
bitmap_free(port->trunks);
|
||
port->trunks = trunks;
|
||
|
||
if (need_flush) {
|
||
port_flush_macs(port);
|
||
}
|
||
}
|
||
|
||
static void
|
||
port_destroy(struct port *port)
|
||
{
|
||
if (port) {
|
||
struct bridge *br = port->bridge;
|
||
struct iface *iface, *next;
|
||
int i;
|
||
|
||
for (i = 0; i < MAX_MIRRORS; i++) {
|
||
struct mirror *m = br->mirrors[i];
|
||
if (m && m->out_port == port) {
|
||
mirror_destroy(m);
|
||
}
|
||
}
|
||
|
||
LIST_FOR_EACH_SAFE (iface, next, port_elem, &port->ifaces) {
|
||
iface_destroy(iface);
|
||
}
|
||
|
||
hmap_remove(&br->ports, &port->hmap_node);
|
||
|
||
VLOG_INFO("destroyed port %s on bridge %s", port->name, br->name);
|
||
|
||
bond_destroy(port->bond);
|
||
lacp_destroy(port->lacp);
|
||
port_flush_macs(port);
|
||
|
||
bitmap_free(port->trunks);
|
||
free(port->name);
|
||
free(port);
|
||
}
|
||
}
|
||
|
||
static struct port *
|
||
port_from_dp_ifidx(const struct bridge *br, uint16_t dp_ifidx)
|
||
{
|
||
struct iface *iface = iface_from_dp_ifidx(br, dp_ifidx);
|
||
return iface ? iface->port : NULL;
|
||
}
|
||
|
||
static struct port *
|
||
port_lookup(const struct bridge *br, const char *name)
|
||
{
|
||
struct port *port;
|
||
|
||
HMAP_FOR_EACH_WITH_HASH (port, hmap_node, hash_string(name, 0),
|
||
&br->ports) {
|
||
if (!strcmp(port->name, name)) {
|
||
return port;
|
||
}
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
static bool
|
||
enable_lacp(struct port *port, bool *activep)
|
||
{
|
||
if (!port->cfg->lacp) {
|
||
/* XXX when LACP implementation has been sufficiently tested, enable by
|
||
* default and make active on bonded ports. */
|
||
return false;
|
||
} else if (!strcmp(port->cfg->lacp, "off")) {
|
||
return false;
|
||
} else if (!strcmp(port->cfg->lacp, "active")) {
|
||
*activep = true;
|
||
return true;
|
||
} else if (!strcmp(port->cfg->lacp, "passive")) {
|
||
*activep = false;
|
||
return true;
|
||
} else {
|
||
VLOG_WARN("port %s: unknown LACP mode %s",
|
||
port->name, port->cfg->lacp);
|
||
return false;
|
||
}
|
||
}
|
||
|
||
static void
|
||
iface_reconfigure_lacp(struct iface *iface)
|
||
{
|
||
struct lacp_slave_settings s;
|
||
int priority, portid;
|
||
|
||
portid = atoi(get_interface_other_config(iface->cfg, "lacp-port-id", "0"));
|
||
priority = atoi(get_interface_other_config(iface->cfg,
|
||
"lacp-port-priority", "0"));
|
||
|
||
if (portid <= 0 || portid > UINT16_MAX) {
|
||
portid = iface->dp_ifidx;
|
||
}
|
||
|
||
if (priority <= 0 || priority > UINT16_MAX) {
|
||
priority = UINT16_MAX;
|
||
}
|
||
|
||
s.name = iface->name;
|
||
s.id = portid;
|
||
s.priority = priority;
|
||
lacp_slave_register(iface->port->lacp, iface, &s);
|
||
}
|
||
|
||
static void
|
||
port_reconfigure_lacp(struct port *port)
|
||
{
|
||
static struct lacp_settings s;
|
||
struct iface *iface;
|
||
uint8_t sysid[ETH_ADDR_LEN];
|
||
const char *sysid_str;
|
||
const char *lacp_time;
|
||
long long int custom_time;
|
||
int priority;
|
||
|
||
if (!enable_lacp(port, &s.active)) {
|
||
lacp_destroy(port->lacp);
|
||
port->lacp = NULL;
|
||
return;
|
||
}
|
||
|
||
sysid_str = get_port_other_config(port->cfg, "lacp-system-id", NULL);
|
||
if (sysid_str && eth_addr_from_string(sysid_str, sysid)) {
|
||
memcpy(s.id, sysid, ETH_ADDR_LEN);
|
||
} else {
|
||
memcpy(s.id, port->bridge->ea, ETH_ADDR_LEN);
|
||
}
|
||
|
||
s.name = port->name;
|
||
|
||
/* Prefer bondable links if unspecified. */
|
||
priority = atoi(get_port_other_config(port->cfg, "lacp-system-priority",
|
||
"0"));
|
||
s.priority = (priority > 0 && priority <= UINT16_MAX
|
||
? priority
|
||
: UINT16_MAX - !list_is_short(&port->ifaces));
|
||
|
||
s.strict = !strcmp(get_port_other_config(port->cfg, "lacp-strict",
|
||
"false"),
|
||
"true");
|
||
|
||
lacp_time = get_port_other_config(port->cfg, "lacp-time", "slow");
|
||
custom_time = atoi(lacp_time);
|
||
if (!strcmp(lacp_time, "fast")) {
|
||
s.lacp_time = LACP_TIME_FAST;
|
||
} else if (!strcmp(lacp_time, "slow")) {
|
||
s.lacp_time = LACP_TIME_SLOW;
|
||
} else if (custom_time > 0) {
|
||
s.lacp_time = LACP_TIME_CUSTOM;
|
||
s.custom_time = custom_time;
|
||
} else {
|
||
s.lacp_time = LACP_TIME_SLOW;
|
||
}
|
||
|
||
if (!port->lacp) {
|
||
port->lacp = lacp_create();
|
||
}
|
||
|
||
lacp_configure(port->lacp, &s);
|
||
|
||
LIST_FOR_EACH (iface, port_elem, &port->ifaces) {
|
||
iface_reconfigure_lacp(iface);
|
||
}
|
||
}
|
||
|
||
static void
|
||
port_reconfigure_bond(struct port *port)
|
||
{
|
||
struct bond_settings s;
|
||
const char *detect_s;
|
||
struct iface *iface;
|
||
|
||
if (list_is_short(&port->ifaces)) {
|
||
/* Not a bonded port. */
|
||
bond_destroy(port->bond);
|
||
port->bond = NULL;
|
||
return;
|
||
}
|
||
|
||
port->bridge->has_bonded_ports = true;
|
||
|
||
s.name = port->name;
|
||
s.balance = BM_SLB;
|
||
if (port->cfg->bond_mode
|
||
&& !bond_mode_from_string(&s.balance, port->cfg->bond_mode)) {
|
||
VLOG_WARN("port %s: unknown bond_mode %s, defaulting to %s",
|
||
port->name, port->cfg->bond_mode,
|
||
bond_mode_to_string(s.balance));
|
||
}
|
||
|
||
s.detect = BLSM_CARRIER;
|
||
detect_s = get_port_other_config(port->cfg, "bond-detect-mode", NULL);
|
||
if (detect_s && !bond_detect_mode_from_string(&s.detect, detect_s)) {
|
||
VLOG_WARN("port %s: unsupported bond-detect-mode %s, "
|
||
"defaulting to %s",
|
||
port->name, detect_s, bond_detect_mode_to_string(s.detect));
|
||
}
|
||
|
||
s.miimon_interval = atoi(
|
||
get_port_other_config(port->cfg, "bond-miimon-interval", "200"));
|
||
if (s.miimon_interval < 100) {
|
||
s.miimon_interval = 100;
|
||
}
|
||
|
||
s.up_delay = MAX(0, port->cfg->bond_updelay);
|
||
s.down_delay = MAX(0, port->cfg->bond_downdelay);
|
||
s.rebalance_interval = atoi(
|
||
get_port_other_config(port->cfg, "bond-rebalance-interval", "10000"));
|
||
if (s.rebalance_interval < 1000) {
|
||
s.rebalance_interval = 1000;
|
||
}
|
||
|
||
s.fake_iface = port->cfg->bond_fake_iface;
|
||
|
||
if (!port->bond) {
|
||
port->bond = bond_create(&s);
|
||
} else {
|
||
if (bond_reconfigure(port->bond, &s)) {
|
||
bridge_flush(port->bridge);
|
||
}
|
||
}
|
||
|
||
LIST_FOR_EACH (iface, port_elem, &port->ifaces) {
|
||
uint16_t stable_id = (port->lacp
|
||
? lacp_slave_get_port_id(port->lacp, iface)
|
||
: iface->dp_ifidx);
|
||
bond_slave_register(iface->port->bond, iface, stable_id,
|
||
iface->netdev);
|
||
}
|
||
}
|
||
|
||
static void
|
||
port_send_learning_packets(struct port *port)
|
||
{
|
||
struct bridge *br = port->bridge;
|
||
int error, n_packets, n_errors;
|
||
struct mac_entry *e;
|
||
|
||
error = n_packets = n_errors = 0;
|
||
LIST_FOR_EACH (e, lru_node, &br->ml->lrus) {
|
||
if (e->port.p != port) {
|
||
int ret = bond_send_learning_packet(port->bond, e->mac, e->vlan);
|
||
if (ret) {
|
||
error = ret;
|
||
n_errors++;
|
||
}
|
||
n_packets++;
|
||
}
|
||
}
|
||
|
||
if (n_errors) {
|
||
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
|
||
VLOG_WARN_RL(&rl, "bond %s: %d errors sending %d gratuitous learning "
|
||
"packets, last error was: %s",
|
||
port->name, n_errors, n_packets, strerror(error));
|
||
} else {
|
||
VLOG_DBG("bond %s: sent %d gratuitous learning packets",
|
||
port->name, n_packets);
|
||
}
|
||
}
|
||
|
||
/* Interface functions. */
|
||
|
||
static struct iface *
|
||
iface_create(struct port *port, const struct ovsrec_interface *if_cfg)
|
||
{
|
||
struct bridge *br = port->bridge;
|
||
struct iface *iface;
|
||
char *name = if_cfg->name;
|
||
|
||
iface = xzalloc(sizeof *iface);
|
||
iface->port = port;
|
||
iface->name = xstrdup(name);
|
||
iface->dp_ifidx = -1;
|
||
iface->tag = tag_create_random();
|
||
iface->netdev = NULL;
|
||
iface->cfg = if_cfg;
|
||
|
||
shash_add_assert(&br->iface_by_name, iface->name, iface);
|
||
|
||
list_push_back(&port->ifaces, &iface->port_elem);
|
||
|
||
VLOG_DBG("attached network device %s to port %s", iface->name, port->name);
|
||
|
||
bridge_flush(br);
|
||
|
||
return iface;
|
||
}
|
||
|
||
static void
|
||
iface_destroy(struct iface *iface)
|
||
{
|
||
if (iface) {
|
||
struct port *port = iface->port;
|
||
struct bridge *br = port->bridge;
|
||
|
||
if (port->bond) {
|
||
bond_slave_unregister(port->bond, iface);
|
||
}
|
||
|
||
if (port->lacp) {
|
||
lacp_slave_unregister(port->lacp, iface);
|
||
}
|
||
|
||
shash_find_and_delete_assert(&br->iface_by_name, iface->name);
|
||
|
||
if (iface->dp_ifidx >= 0) {
|
||
hmap_remove(&br->ifaces, &iface->dp_ifidx_node);
|
||
}
|
||
|
||
list_remove(&iface->port_elem);
|
||
|
||
netdev_close(iface->netdev);
|
||
|
||
free(iface->name);
|
||
free(iface);
|
||
|
||
bridge_flush(port->bridge);
|
||
}
|
||
}
|
||
|
||
static struct iface *
|
||
iface_lookup(const struct bridge *br, const char *name)
|
||
{
|
||
return shash_find_data(&br->iface_by_name, name);
|
||
}
|
||
|
||
static struct iface *
|
||
iface_find(const char *name)
|
||
{
|
||
const struct bridge *br;
|
||
|
||
LIST_FOR_EACH (br, node, &all_bridges) {
|
||
struct iface *iface = iface_lookup(br, name);
|
||
|
||
if (iface) {
|
||
return iface;
|
||
}
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
static struct iface *
|
||
iface_from_dp_ifidx(const struct bridge *br, uint16_t dp_ifidx)
|
||
{
|
||
struct iface *iface;
|
||
|
||
HMAP_FOR_EACH_IN_BUCKET (iface, dp_ifidx_node,
|
||
hash_int(dp_ifidx, 0), &br->ifaces) {
|
||
if (iface->dp_ifidx == dp_ifidx) {
|
||
return iface;
|
||
}
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
/* Set Ethernet address of 'iface', if one is specified in the configuration
|
||
* file. */
|
||
static void
|
||
iface_set_mac(struct iface *iface)
|
||
{
|
||
uint8_t ea[ETH_ADDR_LEN];
|
||
|
||
if (!strcmp(iface->type, "internal")
|
||
&& iface->cfg->mac && eth_addr_from_string(iface->cfg->mac, ea)) {
|
||
if (iface->dp_ifidx == ODPP_LOCAL) {
|
||
VLOG_ERR("interface %s: ignoring mac in Interface record "
|
||
"(use Bridge record to set local port's mac)",
|
||
iface->name);
|
||
} else if (eth_addr_is_multicast(ea)) {
|
||
VLOG_ERR("interface %s: cannot set MAC to multicast address",
|
||
iface->name);
|
||
} else {
|
||
int error = netdev_set_etheraddr(iface->netdev, ea);
|
||
if (error) {
|
||
VLOG_ERR("interface %s: setting MAC failed (%s)",
|
||
iface->name, strerror(error));
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Sets the ofport column of 'if_cfg' to 'ofport'. */
|
||
static void
|
||
iface_set_ofport(const struct ovsrec_interface *if_cfg, int64_t ofport)
|
||
{
|
||
if (if_cfg && !ovsdb_idl_row_is_synthetic(&if_cfg->header_)) {
|
||
ovsrec_interface_set_ofport(if_cfg, &ofport, 1);
|
||
}
|
||
}
|
||
|
||
/* Adds the 'n' key-value pairs in 'keys' in 'values' to 'shash'.
|
||
*
|
||
* The value strings in '*shash' are taken directly from values[], not copied,
|
||
* so the caller should not modify or free them. */
|
||
static void
|
||
shash_from_ovs_idl_map(char **keys, char **values, size_t n,
|
||
struct shash *shash)
|
||
{
|
||
size_t i;
|
||
|
||
shash_init(shash);
|
||
for (i = 0; i < n; i++) {
|
||
shash_add(shash, keys[i], values[i]);
|
||
}
|
||
}
|
||
|
||
/* Creates 'keys' and 'values' arrays from 'shash'.
|
||
*
|
||
* Sets 'keys' and 'values' to heap allocated arrays representing the key-value
|
||
* pairs in 'shash'. The caller takes ownership of 'keys' and 'values'. They
|
||
* are populated with with strings taken directly from 'shash' and thus have
|
||
* the same ownership of the key-value pairs in shash.
|
||
*/
|
||
static void
|
||
shash_to_ovs_idl_map(struct shash *shash,
|
||
char ***keys, char ***values, size_t *n)
|
||
{
|
||
size_t i, count;
|
||
char **k, **v;
|
||
struct shash_node *sn;
|
||
|
||
count = shash_count(shash);
|
||
|
||
k = xmalloc(count * sizeof *k);
|
||
v = xmalloc(count * sizeof *v);
|
||
|
||
i = 0;
|
||
SHASH_FOR_EACH(sn, shash) {
|
||
k[i] = sn->name;
|
||
v[i] = sn->data;
|
||
i++;
|
||
}
|
||
|
||
*n = count;
|
||
*keys = k;
|
||
*values = v;
|
||
}
|
||
|
||
struct iface_delete_queues_cbdata {
|
||
struct netdev *netdev;
|
||
const struct ovsdb_datum *queues;
|
||
};
|
||
|
||
static bool
|
||
queue_ids_include(const struct ovsdb_datum *queues, int64_t target)
|
||
{
|
||
union ovsdb_atom atom;
|
||
|
||
atom.integer = target;
|
||
return ovsdb_datum_find_key(queues, &atom, OVSDB_TYPE_INTEGER) != UINT_MAX;
|
||
}
|
||
|
||
static void
|
||
iface_delete_queues(unsigned int queue_id,
|
||
const struct shash *details OVS_UNUSED, void *cbdata_)
|
||
{
|
||
struct iface_delete_queues_cbdata *cbdata = cbdata_;
|
||
|
||
if (!queue_ids_include(cbdata->queues, queue_id)) {
|
||
netdev_delete_queue(cbdata->netdev, queue_id);
|
||
}
|
||
}
|
||
|
||
static void
|
||
iface_update_qos(struct iface *iface, const struct ovsrec_qos *qos)
|
||
{
|
||
if (!qos || qos->type[0] == '\0') {
|
||
netdev_set_qos(iface->netdev, NULL, NULL);
|
||
} else {
|
||
struct iface_delete_queues_cbdata cbdata;
|
||
struct shash details;
|
||
size_t i;
|
||
|
||
/* Configure top-level Qos for 'iface'. */
|
||
shash_from_ovs_idl_map(qos->key_other_config, qos->value_other_config,
|
||
qos->n_other_config, &details);
|
||
netdev_set_qos(iface->netdev, qos->type, &details);
|
||
shash_destroy(&details);
|
||
|
||
/* Deconfigure queues that were deleted. */
|
||
cbdata.netdev = iface->netdev;
|
||
cbdata.queues = ovsrec_qos_get_queues(qos, OVSDB_TYPE_INTEGER,
|
||
OVSDB_TYPE_UUID);
|
||
netdev_dump_queues(iface->netdev, iface_delete_queues, &cbdata);
|
||
|
||
/* Configure queues for 'iface'. */
|
||
for (i = 0; i < qos->n_queues; i++) {
|
||
const struct ovsrec_queue *queue = qos->value_queues[i];
|
||
unsigned int queue_id = qos->key_queues[i];
|
||
|
||
shash_from_ovs_idl_map(queue->key_other_config,
|
||
queue->value_other_config,
|
||
queue->n_other_config, &details);
|
||
netdev_set_queue(iface->netdev, queue_id, &details);
|
||
shash_destroy(&details);
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
iface_update_cfm(struct iface *iface)
|
||
{
|
||
size_t i;
|
||
struct cfm cfm;
|
||
uint16_t *remote_mps;
|
||
struct ovsrec_monitor *mon;
|
||
uint8_t maid[CCM_MAID_LEN];
|
||
|
||
mon = iface->cfg->monitor;
|
||
|
||
if (!mon) {
|
||
ofproto_iface_clear_cfm(iface->port->bridge->ofproto, iface->dp_ifidx);
|
||
return;
|
||
}
|
||
|
||
if (!cfm_generate_maid(mon->md_name, mon->ma_name, maid)) {
|
||
VLOG_WARN("interface %s: Failed to generate MAID.", iface->name);
|
||
return;
|
||
}
|
||
|
||
cfm.mpid = mon->mpid;
|
||
cfm.interval = mon->interval ? *mon->interval : 1000;
|
||
|
||
memcpy(cfm.maid, maid, sizeof cfm.maid);
|
||
|
||
remote_mps = xzalloc(mon->n_remote_mps * sizeof *remote_mps);
|
||
for(i = 0; i < mon->n_remote_mps; i++) {
|
||
remote_mps[i] = mon->remote_mps[i]->mpid;
|
||
}
|
||
|
||
ofproto_iface_set_cfm(iface->port->bridge->ofproto, iface->dp_ifidx,
|
||
&cfm, remote_mps, mon->n_remote_mps);
|
||
free(remote_mps);
|
||
}
|
||
|
||
/* Read carrier or miimon status directly from 'iface''s netdev, according to
|
||
* how 'iface''s port is configured.
|
||
*
|
||
* Returns true if 'iface' is up, false otherwise. */
|
||
static bool
|
||
iface_get_carrier(const struct iface *iface)
|
||
{
|
||
/* XXX */
|
||
return netdev_get_carrier(iface->netdev);
|
||
}
|
||
|
||
/* Returns true if 'iface' is synthetic, that is, if we constructed it locally
|
||
* instead of obtaining it from the database. */
|
||
static bool
|
||
iface_is_synthetic(const struct iface *iface)
|
||
{
|
||
return ovsdb_idl_row_is_synthetic(&iface->cfg->header_);
|
||
}
|
||
|
||
/* Port mirroring. */
|
||
|
||
static struct mirror *
|
||
mirror_find_by_uuid(struct bridge *br, const struct uuid *uuid)
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < MAX_MIRRORS; i++) {
|
||
struct mirror *m = br->mirrors[i];
|
||
if (m && uuid_equals(uuid, &m->uuid)) {
|
||
return m;
|
||
}
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
static void
|
||
mirror_reconfigure(struct bridge *br)
|
||
{
|
||
unsigned long *rspan_vlans;
|
||
struct port *port;
|
||
int i;
|
||
|
||
/* Get rid of deleted mirrors. */
|
||
for (i = 0; i < MAX_MIRRORS; i++) {
|
||
struct mirror *m = br->mirrors[i];
|
||
if (m) {
|
||
const struct ovsdb_datum *mc;
|
||
union ovsdb_atom atom;
|
||
|
||
mc = ovsrec_bridge_get_mirrors(br->cfg, OVSDB_TYPE_UUID);
|
||
atom.uuid = br->mirrors[i]->uuid;
|
||
if (ovsdb_datum_find_key(mc, &atom, OVSDB_TYPE_UUID) == UINT_MAX) {
|
||
mirror_destroy(m);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Add new mirrors and reconfigure existing ones. */
|
||
for (i = 0; i < br->cfg->n_mirrors; i++) {
|
||
struct ovsrec_mirror *cfg = br->cfg->mirrors[i];
|
||
struct mirror *m = mirror_find_by_uuid(br, &cfg->header_.uuid);
|
||
if (m) {
|
||
mirror_reconfigure_one(m, cfg);
|
||
} else {
|
||
mirror_create(br, cfg);
|
||
}
|
||
}
|
||
|
||
/* Update port reserved status. */
|
||
HMAP_FOR_EACH (port, hmap_node, &br->ports) {
|
||
port->is_mirror_output_port = false;
|
||
}
|
||
for (i = 0; i < MAX_MIRRORS; i++) {
|
||
struct mirror *m = br->mirrors[i];
|
||
if (m && m->out_port) {
|
||
m->out_port->is_mirror_output_port = true;
|
||
}
|
||
}
|
||
|
||
/* Update flooded vlans (for RSPAN). */
|
||
rspan_vlans = NULL;
|
||
if (br->cfg->n_flood_vlans) {
|
||
rspan_vlans = bitmap_allocate(4096);
|
||
|
||
for (i = 0; i < br->cfg->n_flood_vlans; i++) {
|
||
int64_t vlan = br->cfg->flood_vlans[i];
|
||
if (vlan >= 0 && vlan < 4096) {
|
||
bitmap_set1(rspan_vlans, vlan);
|
||
VLOG_INFO("bridge %s: disabling learning on vlan %"PRId64,
|
||
br->name, vlan);
|
||
} else {
|
||
VLOG_ERR("bridge %s: invalid value %"PRId64 "for flood VLAN",
|
||
br->name, vlan);
|
||
}
|
||
}
|
||
}
|
||
if (mac_learning_set_flood_vlans(br->ml, rspan_vlans)) {
|
||
bridge_flush(br);
|
||
mac_learning_flush(br->ml);
|
||
}
|
||
}
|
||
|
||
static void
|
||
mirror_create(struct bridge *br, struct ovsrec_mirror *cfg)
|
||
{
|
||
struct mirror *m;
|
||
size_t i;
|
||
|
||
for (i = 0; ; i++) {
|
||
if (i >= MAX_MIRRORS) {
|
||
VLOG_WARN("bridge %s: maximum of %d port mirrors reached, "
|
||
"cannot create %s", br->name, MAX_MIRRORS, cfg->name);
|
||
return;
|
||
}
|
||
if (!br->mirrors[i]) {
|
||
break;
|
||
}
|
||
}
|
||
|
||
VLOG_INFO("created port mirror %s on bridge %s", cfg->name, br->name);
|
||
bridge_flush(br);
|
||
mac_learning_flush(br->ml);
|
||
|
||
br->mirrors[i] = m = xzalloc(sizeof *m);
|
||
m->uuid = cfg->header_.uuid;
|
||
m->bridge = br;
|
||
m->idx = i;
|
||
m->name = xstrdup(cfg->name);
|
||
sset_init(&m->src_ports);
|
||
sset_init(&m->dst_ports);
|
||
m->vlans = NULL;
|
||
m->n_vlans = 0;
|
||
m->out_vlan = -1;
|
||
m->out_port = NULL;
|
||
|
||
mirror_reconfigure_one(m, cfg);
|
||
}
|
||
|
||
static void
|
||
mirror_destroy(struct mirror *m)
|
||
{
|
||
if (m) {
|
||
struct bridge *br = m->bridge;
|
||
struct port *port;
|
||
|
||
HMAP_FOR_EACH (port, hmap_node, &br->ports) {
|
||
port->src_mirrors &= ~(MIRROR_MASK_C(1) << m->idx);
|
||
port->dst_mirrors &= ~(MIRROR_MASK_C(1) << m->idx);
|
||
}
|
||
|
||
sset_destroy(&m->src_ports);
|
||
sset_destroy(&m->dst_ports);
|
||
free(m->vlans);
|
||
|
||
m->bridge->mirrors[m->idx] = NULL;
|
||
free(m->name);
|
||
free(m);
|
||
|
||
bridge_flush(br);
|
||
mac_learning_flush(br->ml);
|
||
}
|
||
}
|
||
|
||
static void
|
||
mirror_collect_ports(struct mirror *m, struct ovsrec_port **ports, int n_ports,
|
||
struct sset *names)
|
||
{
|
||
size_t i;
|
||
|
||
for (i = 0; i < n_ports; i++) {
|
||
const char *name = ports[i]->name;
|
||
if (port_lookup(m->bridge, name)) {
|
||
sset_add(names, name);
|
||
} else {
|
||
VLOG_WARN("bridge %s: mirror %s cannot match on nonexistent "
|
||
"port %s", m->bridge->name, m->name, name);
|
||
}
|
||
}
|
||
}
|
||
|
||
static size_t
|
||
mirror_collect_vlans(struct mirror *m, const struct ovsrec_mirror *cfg,
|
||
int **vlans)
|
||
{
|
||
size_t n_vlans;
|
||
size_t i;
|
||
|
||
*vlans = xmalloc(sizeof **vlans * cfg->n_select_vlan);
|
||
n_vlans = 0;
|
||
for (i = 0; i < cfg->n_select_vlan; i++) {
|
||
int64_t vlan = cfg->select_vlan[i];
|
||
if (vlan < 0 || vlan > 4095) {
|
||
VLOG_WARN("bridge %s: mirror %s selects invalid VLAN %"PRId64,
|
||
m->bridge->name, m->name, vlan);
|
||
} else {
|
||
(*vlans)[n_vlans++] = vlan;
|
||
}
|
||
}
|
||
return n_vlans;
|
||
}
|
||
|
||
static bool
|
||
vlan_is_mirrored(const struct mirror *m, int vlan)
|
||
{
|
||
size_t i;
|
||
|
||
for (i = 0; i < m->n_vlans; i++) {
|
||
if (m->vlans[i] == vlan) {
|
||
return true;
|
||
}
|
||
}
|
||
return false;
|
||
}
|
||
|
||
static void
|
||
mirror_reconfigure_one(struct mirror *m, struct ovsrec_mirror *cfg)
|
||
{
|
||
struct sset src_ports, dst_ports;
|
||
mirror_mask_t mirror_bit;
|
||
struct port *out_port;
|
||
struct port *port;
|
||
int out_vlan;
|
||
size_t n_vlans;
|
||
int *vlans;
|
||
|
||
/* Set name. */
|
||
if (strcmp(cfg->name, m->name)) {
|
||
free(m->name);
|
||
m->name = xstrdup(cfg->name);
|
||
}
|
||
|
||
/* Get output port. */
|
||
if (cfg->output_port) {
|
||
out_port = port_lookup(m->bridge, cfg->output_port->name);
|
||
if (!out_port) {
|
||
VLOG_ERR("bridge %s: mirror %s outputs to port not on bridge",
|
||
m->bridge->name, m->name);
|
||
mirror_destroy(m);
|
||
return;
|
||
}
|
||
out_vlan = -1;
|
||
|
||
if (cfg->output_vlan) {
|
||
VLOG_ERR("bridge %s: mirror %s specifies both output port and "
|
||
"output vlan; ignoring output vlan",
|
||
m->bridge->name, m->name);
|
||
}
|
||
} else if (cfg->output_vlan) {
|
||
out_port = NULL;
|
||
out_vlan = *cfg->output_vlan;
|
||
} else {
|
||
VLOG_ERR("bridge %s: mirror %s does not specify output; ignoring",
|
||
m->bridge->name, m->name);
|
||
mirror_destroy(m);
|
||
return;
|
||
}
|
||
|
||
sset_init(&src_ports);
|
||
sset_init(&dst_ports);
|
||
if (cfg->select_all) {
|
||
HMAP_FOR_EACH (port, hmap_node, &m->bridge->ports) {
|
||
sset_add(&src_ports, port->name);
|
||
sset_add(&dst_ports, port->name);
|
||
}
|
||
vlans = NULL;
|
||
n_vlans = 0;
|
||
} else {
|
||
/* Get ports, and drop duplicates and ports that don't exist. */
|
||
mirror_collect_ports(m, cfg->select_src_port, cfg->n_select_src_port,
|
||
&src_ports);
|
||
mirror_collect_ports(m, cfg->select_dst_port, cfg->n_select_dst_port,
|
||
&dst_ports);
|
||
|
||
/* Get all the vlans, and drop duplicate and invalid vlans. */
|
||
n_vlans = mirror_collect_vlans(m, cfg, &vlans);
|
||
}
|
||
|
||
/* Update mirror data. */
|
||
if (!sset_equals(&m->src_ports, &src_ports)
|
||
|| !sset_equals(&m->dst_ports, &dst_ports)
|
||
|| m->n_vlans != n_vlans
|
||
|| memcmp(m->vlans, vlans, sizeof *vlans * n_vlans)
|
||
|| m->out_port != out_port
|
||
|| m->out_vlan != out_vlan) {
|
||
bridge_flush(m->bridge);
|
||
mac_learning_flush(m->bridge->ml);
|
||
}
|
||
sset_swap(&m->src_ports, &src_ports);
|
||
sset_swap(&m->dst_ports, &dst_ports);
|
||
free(m->vlans);
|
||
m->vlans = vlans;
|
||
m->n_vlans = n_vlans;
|
||
m->out_port = out_port;
|
||
m->out_vlan = out_vlan;
|
||
|
||
/* Update ports. */
|
||
mirror_bit = MIRROR_MASK_C(1) << m->idx;
|
||
HMAP_FOR_EACH (port, hmap_node, &m->bridge->ports) {
|
||
if (sset_contains(&m->src_ports, port->name)) {
|
||
port->src_mirrors |= mirror_bit;
|
||
} else {
|
||
port->src_mirrors &= ~mirror_bit;
|
||
}
|
||
|
||
if (sset_contains(&m->dst_ports, port->name)) {
|
||
port->dst_mirrors |= mirror_bit;
|
||
} else {
|
||
port->dst_mirrors &= ~mirror_bit;
|
||
}
|
||
}
|
||
|
||
/* Clean up. */
|
||
sset_destroy(&src_ports);
|
||
sset_destroy(&dst_ports);
|
||
}
|