2 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
23 #include "openvswitch/types.h"
30 /* Generic interface to network devices ("netdev"s).
32 * Every port on a switch must have a corresponding netdev that must minimally
33 * support a few operations, such as the ability to read the netdev's MTU.
34 * The PORTING file at the top of the source tree has more information in the
35 * "Writing a netdev Provider" section.
40 * Most of the netdev functions are fully thread-safe: they may be called from
41 * any number of threads on the same or different netdev objects. The
48 * These functions are conditionally thread-safe: they may be called from
49 * different threads only on different netdev_rxq objects. (The client may
50 * create multiple netdev_rxq objects for a single netdev and access each
51 * of those from a different thread.)
53 * NETDEV_FOR_EACH_QUEUE
54 * netdev_queue_dump_next()
55 * netdev_queue_dump_done()
57 * These functions are conditionally thread-safe: they may be called from
58 * different threads only on different netdev_queue_dump objects. (The
59 * client may create multiple netdev_queue_dump objects for a single
60 * netdev and access each of those from a different thread.)
67 struct netdev_saved_flags;
74 /* Network device statistics.
76 * Values of unsupported statistics are set to all-1-bits (UINT64_MAX). */
78 uint64_t rx_packets; /* Total packets received. */
79 uint64_t tx_packets; /* Total packets transmitted. */
80 uint64_t rx_bytes; /* Total bytes received. */
81 uint64_t tx_bytes; /* Total bytes transmitted. */
82 uint64_t rx_errors; /* Bad packets received. */
83 uint64_t tx_errors; /* Packet transmit problems. */
84 uint64_t rx_dropped; /* No buffer space. */
85 uint64_t tx_dropped; /* No buffer space. */
86 uint64_t multicast; /* Multicast packets received. */
89 /* Detailed receive errors. */
90 uint64_t rx_length_errors;
91 uint64_t rx_over_errors; /* Receiver ring buff overflow. */
92 uint64_t rx_crc_errors; /* Recved pkt with crc error. */
93 uint64_t rx_frame_errors; /* Recv'd frame alignment error. */
94 uint64_t rx_fifo_errors; /* Recv'r fifo overrun . */
95 uint64_t rx_missed_errors; /* Receiver missed packet. */
97 /* Detailed transmit errors. */
98 uint64_t tx_aborted_errors;
99 uint64_t tx_carrier_errors;
100 uint64_t tx_fifo_errors;
101 uint64_t tx_heartbeat_errors;
102 uint64_t tx_window_errors;
105 /* Configuration specific to tunnels. */
106 struct netdev_tunnel_config {
111 bool out_key_present;
133 void netdev_run(void);
134 void netdev_wait(void);
136 void netdev_enumerate_types(struct sset *types);
137 bool netdev_is_reserved_name(const char *name);
139 int netdev_n_txq(const struct netdev *netdev);
140 int netdev_n_rxq(const struct netdev *netdev);
141 bool netdev_is_pmd(const struct netdev *netdev);
143 /* Open and close. */
144 int netdev_open(const char *name, const char *type, struct netdev **netdevp);
146 struct netdev *netdev_ref(const struct netdev *);
147 void netdev_remove(struct netdev *);
148 void netdev_close(struct netdev *);
150 void netdev_parse_name(const char *netdev_name, char **name, char **type);
153 int netdev_set_config(struct netdev *, const struct smap *args, char **errp);
154 int netdev_get_config(const struct netdev *, struct smap *);
155 const struct netdev_tunnel_config *
156 netdev_get_tunnel_config(const struct netdev *);
157 int netdev_get_numa_id(const struct netdev *);
159 /* Basic properties. */
160 const char *netdev_get_name(const struct netdev *);
161 const char *netdev_get_type(const struct netdev *);
162 const char *netdev_get_type_from_name(const char *);
163 int netdev_get_mtu(const struct netdev *, int *mtup);
164 int netdev_set_mtu(const struct netdev *, int mtu);
165 int netdev_get_ifindex(const struct netdev *);
166 int netdev_set_multiq(struct netdev *, unsigned int n_txq, unsigned int n_rxq);
168 /* Packet reception. */
169 int netdev_rxq_open(struct netdev *, struct netdev_rxq **, int id);
170 void netdev_rxq_close(struct netdev_rxq *);
172 const char *netdev_rxq_get_name(const struct netdev_rxq *);
174 int netdev_rxq_recv(struct netdev_rxq *rx, struct dpif_packet **buffers,
176 void netdev_rxq_wait(struct netdev_rxq *);
177 int netdev_rxq_drain(struct netdev_rxq *);
179 /* Packet transmission. */
180 int netdev_send(struct netdev *, int qid, struct dpif_packet **, int cnt,
182 void netdev_send_wait(struct netdev *, int qid);
184 /* Hardware address. */
185 int netdev_set_etheraddr(struct netdev *, const uint8_t mac[ETH_ADDR_LEN]);
186 int netdev_get_etheraddr(const struct netdev *, uint8_t mac[ETH_ADDR_LEN]);
189 bool netdev_get_carrier(const struct netdev *);
190 long long int netdev_get_carrier_resets(const struct netdev *);
191 int netdev_set_miimon_interval(struct netdev *, long long int interval);
194 enum netdev_features {
195 NETDEV_F_10MB_HD = 1 << 0, /* 10 Mb half-duplex rate support. */
196 NETDEV_F_10MB_FD = 1 << 1, /* 10 Mb full-duplex rate support. */
197 NETDEV_F_100MB_HD = 1 << 2, /* 100 Mb half-duplex rate support. */
198 NETDEV_F_100MB_FD = 1 << 3, /* 100 Mb full-duplex rate support. */
199 NETDEV_F_1GB_HD = 1 << 4, /* 1 Gb half-duplex rate support. */
200 NETDEV_F_1GB_FD = 1 << 5, /* 1 Gb full-duplex rate support. */
201 NETDEV_F_10GB_FD = 1 << 6, /* 10 Gb full-duplex rate support. */
202 NETDEV_F_40GB_FD = 1 << 7, /* 40 Gb full-duplex rate support. */
203 NETDEV_F_100GB_FD = 1 << 8, /* 100 Gb full-duplex rate support. */
204 NETDEV_F_1TB_FD = 1 << 9, /* 1 Tb full-duplex rate support. */
205 NETDEV_F_OTHER = 1 << 10, /* Other rate, not in the list. */
206 NETDEV_F_COPPER = 1 << 11, /* Copper medium. */
207 NETDEV_F_FIBER = 1 << 12, /* Fiber medium. */
208 NETDEV_F_AUTONEG = 1 << 13, /* Auto-negotiation. */
209 NETDEV_F_PAUSE = 1 << 14, /* Pause. */
210 NETDEV_F_PAUSE_ASYM = 1 << 15, /* Asymmetric pause. */
213 int netdev_get_features(const struct netdev *,
214 enum netdev_features *current,
215 enum netdev_features *advertised,
216 enum netdev_features *supported,
217 enum netdev_features *peer);
218 uint64_t netdev_features_to_bps(enum netdev_features features,
219 uint64_t default_bps);
220 bool netdev_features_is_full_duplex(enum netdev_features features);
221 int netdev_set_advertisements(struct netdev *, enum netdev_features advertise);
225 NETDEV_UP = 0x0001, /* Device enabled? */
226 NETDEV_PROMISC = 0x0002, /* Promiscuous mode? */
227 NETDEV_LOOPBACK = 0x0004 /* This is a loopback device. */
230 int netdev_get_flags(const struct netdev *, enum netdev_flags *);
231 int netdev_set_flags(struct netdev *, enum netdev_flags,
232 struct netdev_saved_flags **);
233 int netdev_turn_flags_on(struct netdev *, enum netdev_flags,
234 struct netdev_saved_flags **);
235 int netdev_turn_flags_off(struct netdev *, enum netdev_flags,
236 struct netdev_saved_flags **);
238 void netdev_restore_flags(struct netdev_saved_flags *);
240 /* TCP/IP stack interface. */
241 int netdev_get_in4(const struct netdev *, struct in_addr *address,
242 struct in_addr *netmask);
243 int netdev_set_in4(struct netdev *, struct in_addr addr, struct in_addr mask);
244 int netdev_get_in4_by_name(const char *device_name, struct in_addr *in4);
245 int netdev_get_in6(const struct netdev *, struct in6_addr *);
246 int netdev_add_router(struct netdev *, struct in_addr router);
247 int netdev_get_next_hop(const struct netdev *, const struct in_addr *host,
248 struct in_addr *next_hop, char **);
249 int netdev_get_status(const struct netdev *, struct smap *);
250 int netdev_arp_lookup(const struct netdev *, ovs_be32 ip,
251 uint8_t mac[ETH_ADDR_LEN]);
253 struct netdev *netdev_find_dev_by_in4(const struct in_addr *);
256 int netdev_get_stats(const struct netdev *, struct netdev_stats *);
258 /* Quality of service. */
259 struct netdev_qos_capabilities {
260 unsigned int n_queues;
263 struct netdev_queue_stats {
264 /* Values of unsupported statistics are set to all-1-bits (UINT64_MAX). */
269 /* Time at which the queue was created, in msecs, LLONG_MIN if unknown. */
270 long long int created;
273 int netdev_set_policing(struct netdev *, uint32_t kbits_rate,
274 uint32_t kbits_burst);
276 int netdev_get_qos_types(const struct netdev *, struct sset *types);
277 int netdev_get_qos_capabilities(const struct netdev *,
279 struct netdev_qos_capabilities *);
280 int netdev_get_n_queues(const struct netdev *,
281 const char *type, unsigned int *n_queuesp);
283 int netdev_get_qos(const struct netdev *,
284 const char **typep, struct smap *details);
285 int netdev_set_qos(struct netdev *,
286 const char *type, const struct smap *details);
288 int netdev_get_queue(const struct netdev *,
289 unsigned int queue_id, struct smap *details);
290 int netdev_set_queue(struct netdev *,
291 unsigned int queue_id, const struct smap *details);
292 int netdev_delete_queue(struct netdev *, unsigned int queue_id);
293 int netdev_get_queue_stats(const struct netdev *, unsigned int queue_id,
294 struct netdev_queue_stats *);
295 uint64_t netdev_get_change_seq(const struct netdev *);
297 struct netdev_queue_dump {
298 struct netdev *netdev;
302 void netdev_queue_dump_start(struct netdev_queue_dump *,
303 const struct netdev *);
304 bool netdev_queue_dump_next(struct netdev_queue_dump *,
305 unsigned int *queue_id, struct smap *details);
306 int netdev_queue_dump_done(struct netdev_queue_dump *);
308 /* Iterates through each queue in NETDEV, using DUMP as state. Fills QUEUE_ID
309 * and DETAILS with information about queues. The client must initialize and
312 * Arguments all have pointer type.
314 * If you break out of the loop, then you need to free the dump structure by
315 * hand using netdev_queue_dump_done(). */
316 #define NETDEV_QUEUE_FOR_EACH(QUEUE_ID, DETAILS, DUMP, NETDEV) \
317 for (netdev_queue_dump_start(DUMP, NETDEV); \
318 (netdev_queue_dump_next(DUMP, QUEUE_ID, DETAILS) \
320 : (netdev_queue_dump_done(DUMP), false)); \
323 typedef void netdev_dump_queue_stats_cb(unsigned int queue_id,
324 struct netdev_queue_stats *,
326 int netdev_dump_queue_stats(const struct netdev *,
327 netdev_dump_queue_stats_cb *, void *aux);
329 enum { NETDEV_MAX_RX_BATCH = 256 }; /* Maximum number packets in rx_recv() batch. */
335 #endif /* netdev.h */