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.
20 #include "openvswitch/netdev.h"
21 #include "openvswitch/types.h"
29 /* Generic interface to network devices ("netdev"s).
31 * Every port on a switch must have a corresponding netdev that must minimally
32 * support a few operations, such as the ability to read the netdev's MTU.
33 * The PORTING file at the top of the source tree has more information in the
34 * "Writing a netdev Provider" section.
39 * Most of the netdev functions are fully thread-safe: they may be called from
40 * any number of threads on the same or different netdev objects. The
47 * These functions are conditionally thread-safe: they may be called from
48 * different threads only on different netdev_rxq objects. (The client may
49 * create multiple netdev_rxq objects for a single netdev and access each
50 * of those from a different thread.)
52 * NETDEV_QUEUE_FOR_EACH
53 * netdev_queue_dump_next()
54 * netdev_queue_dump_done()
56 * These functions are conditionally thread-safe: they may be called from
57 * different threads only on different netdev_queue_dump objects. (The
58 * client may create multiple netdev_queue_dump objects for a single
59 * netdev and access each of those from a different thread.)
62 struct dp_packet_batch;
66 struct netdev_saved_flags;
72 struct ovs_action_push_tnl;
74 /* Configuration specific to tunnels. */
75 struct netdev_tunnel_config {
88 struct in6_addr ipv6_src;
89 struct in6_addr ipv6_dst;
104 void netdev_run(void);
105 void netdev_wait(void);
107 void netdev_enumerate_types(struct sset *types);
108 bool netdev_is_reserved_name(const char *name);
110 int netdev_n_txq(const struct netdev *netdev);
111 int netdev_n_rxq(const struct netdev *netdev);
112 bool netdev_is_pmd(const struct netdev *netdev);
114 /* Open and close. */
115 int netdev_open(const char *name, const char *type, struct netdev **netdevp);
117 struct netdev *netdev_ref(const struct netdev *);
118 void netdev_remove(struct netdev *);
119 void netdev_close(struct netdev *);
121 void netdev_parse_name(const char *netdev_name, char **name, char **type);
124 int netdev_set_config(struct netdev *, const struct smap *args, char **errp);
125 int netdev_get_config(const struct netdev *, struct smap *);
126 const struct netdev_tunnel_config *
127 netdev_get_tunnel_config(const struct netdev *);
128 int netdev_get_numa_id(const struct netdev *);
130 /* Basic properties. */
131 const char *netdev_get_name(const struct netdev *);
132 const char *netdev_get_type(const struct netdev *);
133 const char *netdev_get_type_from_name(const char *);
134 int netdev_get_mtu(const struct netdev *, int *mtup);
135 int netdev_set_mtu(const struct netdev *, int mtu);
136 int netdev_get_ifindex(const struct netdev *);
137 int netdev_set_tx_multiq(struct netdev *, unsigned int n_txq);
139 /* Packet reception. */
140 int netdev_rxq_open(struct netdev *, struct netdev_rxq **, int id);
141 void netdev_rxq_close(struct netdev_rxq *);
143 const char *netdev_rxq_get_name(const struct netdev_rxq *);
144 int netdev_rxq_get_queue_id(const struct netdev_rxq *);
146 int netdev_rxq_recv(struct netdev_rxq *rx, struct dp_packet_batch *);
147 void netdev_rxq_wait(struct netdev_rxq *);
148 int netdev_rxq_drain(struct netdev_rxq *);
150 /* Packet transmission. */
151 int netdev_send(struct netdev *, int qid, struct dp_packet_batch *,
153 void netdev_send_wait(struct netdev *, int qid);
155 /* native tunnel APIs */
156 /* Structure to pass parameters required to build a tunnel header. */
157 struct netdev_tnl_build_header_params {
158 const struct flow *flow;
159 const struct in6_addr *s_ip;
160 struct eth_addr dmac;
161 struct eth_addr smac;
166 netdev_init_tnl_build_header_params(struct netdev_tnl_build_header_params *params,
167 const struct flow *tnl_flow,
168 const struct in6_addr *src,
169 struct eth_addr dmac,
170 struct eth_addr smac);
172 int netdev_build_header(const struct netdev *, struct ovs_action_push_tnl *data,
173 const struct netdev_tnl_build_header_params *params);
175 int netdev_push_header(const struct netdev *netdev,
176 struct dp_packet_batch *,
177 const struct ovs_action_push_tnl *data);
178 void netdev_pop_header(struct netdev *netdev, struct dp_packet_batch *);
180 /* Hardware address. */
181 int netdev_set_etheraddr(struct netdev *, const struct eth_addr mac);
182 int netdev_get_etheraddr(const struct netdev *, struct eth_addr *mac);
185 bool netdev_get_carrier(const struct netdev *);
186 long long int netdev_get_carrier_resets(const struct netdev *);
187 int netdev_set_miimon_interval(struct netdev *, long long int interval);
191 NETDEV_UP = 0x0001, /* Device enabled? */
192 NETDEV_PROMISC = 0x0002, /* Promiscuous mode? */
193 NETDEV_LOOPBACK = 0x0004 /* This is a loopback device. */
196 int netdev_get_flags(const struct netdev *, enum netdev_flags *);
197 int netdev_set_flags(struct netdev *, enum netdev_flags,
198 struct netdev_saved_flags **);
199 int netdev_turn_flags_on(struct netdev *, enum netdev_flags,
200 struct netdev_saved_flags **);
201 int netdev_turn_flags_off(struct netdev *, enum netdev_flags,
202 struct netdev_saved_flags **);
204 void netdev_restore_flags(struct netdev_saved_flags *);
206 /* TCP/IP stack interface. */
207 int netdev_set_in4(struct netdev *, struct in_addr addr, struct in_addr mask);
208 int netdev_get_in4_by_name(const char *device_name, struct in_addr *in4);
209 int netdev_get_addr_list(const struct netdev *netdev, struct in6_addr **addr,
210 struct in6_addr **mask, int *n_in6);
212 int netdev_add_router(struct netdev *, struct in_addr router);
213 int netdev_get_next_hop(const struct netdev *, const struct in_addr *host,
214 struct in_addr *next_hop, char **);
215 int netdev_get_status(const struct netdev *, struct smap *);
216 int netdev_arp_lookup(const struct netdev *, ovs_be32 ip,
217 struct eth_addr *mac);
219 struct netdev *netdev_find_dev_by_in4(const struct in_addr *);
222 int netdev_get_stats(const struct netdev *, struct netdev_stats *);
224 /* Quality of service. */
225 struct netdev_qos_capabilities {
226 unsigned int n_queues;
229 struct netdev_queue_stats {
230 /* Values of unsupported statistics are set to all-1-bits (UINT64_MAX). */
235 /* Time at which the queue was created, in msecs, LLONG_MIN if unknown. */
236 long long int created;
239 int netdev_set_policing(struct netdev *, uint32_t kbits_rate,
240 uint32_t kbits_burst);
242 int netdev_get_qos_types(const struct netdev *, struct sset *types);
243 int netdev_get_qos_capabilities(const struct netdev *,
245 struct netdev_qos_capabilities *);
246 int netdev_get_n_queues(const struct netdev *,
247 const char *type, unsigned int *n_queuesp);
249 int netdev_get_qos(const struct netdev *,
250 const char **typep, struct smap *details);
251 int netdev_set_qos(struct netdev *,
252 const char *type, const struct smap *details);
254 int netdev_get_queue(const struct netdev *,
255 unsigned int queue_id, struct smap *details);
256 int netdev_set_queue(struct netdev *,
257 unsigned int queue_id, const struct smap *details);
258 int netdev_delete_queue(struct netdev *, unsigned int queue_id);
259 int netdev_get_queue_stats(const struct netdev *, unsigned int queue_id,
260 struct netdev_queue_stats *);
261 uint64_t netdev_get_change_seq(const struct netdev *);
263 int netdev_reconfigure(struct netdev *netdev);
264 void netdev_wait_reconf_required(struct netdev *netdev);
265 bool netdev_is_reconf_required(struct netdev *netdev);
267 struct netdev_queue_dump {
268 struct netdev *netdev;
272 void netdev_queue_dump_start(struct netdev_queue_dump *,
273 const struct netdev *);
274 bool netdev_queue_dump_next(struct netdev_queue_dump *,
275 unsigned int *queue_id, struct smap *details);
276 int netdev_queue_dump_done(struct netdev_queue_dump *);
278 /* Iterates through each queue in NETDEV, using DUMP as state. Fills QUEUE_ID
279 * and DETAILS with information about queues. The client must initialize and
282 * Arguments all have pointer type.
284 * If you break out of the loop, then you need to free the dump structure by
285 * hand using netdev_queue_dump_done(). */
286 #define NETDEV_QUEUE_FOR_EACH(QUEUE_ID, DETAILS, DUMP, NETDEV) \
287 for (netdev_queue_dump_start(DUMP, NETDEV); \
288 (netdev_queue_dump_next(DUMP, QUEUE_ID, DETAILS) \
290 : (netdev_queue_dump_done(DUMP), false)); \
293 typedef void netdev_dump_queue_stats_cb(unsigned int queue_id,
294 struct netdev_queue_stats *,
296 int netdev_dump_queue_stats(const struct netdev *,
297 netdev_dump_queue_stats_cb *, void *aux);
299 extern struct seq *tnl_conf_seq;
302 void netdev_get_addrs_list_flush(void);
303 int netdev_get_addrs(const char dev[], struct in6_addr **paddr,
304 struct in6_addr **pmask, int *n_in6);
311 #endif /* netdev.h */