lib/netdev.h

   1 /*
   2  * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
   3  *
   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:
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  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.
  15  */
  16
  17 #ifndef NETDEV_H
  18 #define NETDEV_H 1
  19
  20 #include <stdbool.h>
  21 #include <stddef.h>
  22 #include <stdint.h>
  23 #include "openvswitch/types.h"
  24
  25 #ifdef  __cplusplus
  26 extern "C" {
  27 #endif
  28
  29 /* Generic interface to network devices ("netdev"s).
  30  *
  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. */
  35
  36 struct netdev;
  37 struct netdev_class;
  38 struct netdev_rx;
  39 struct netdev_saved_flags;
  40 struct ofpbuf;
  41 struct in_addr;
  42 struct in6_addr;
  43 struct smap;
  44 struct sset;
  45
  46 /* Network device statistics.
  47  *
  48  * Values of unsupported statistics are set to all-1-bits (UINT64_MAX). */
  49 struct netdev_stats {
  50     uint64_t rx_packets;        /* Total packets received. */
  51     uint64_t tx_packets;        /* Total packets transmitted. */
  52     uint64_t rx_bytes;          /* Total bytes received. */
  53     uint64_t tx_bytes;          /* Total bytes transmitted. */
  54     uint64_t rx_errors;         /* Bad packets received. */
  55     uint64_t tx_errors;         /* Packet transmit problems. */
  56     uint64_t rx_dropped;        /* No buffer space. */
  57     uint64_t tx_dropped;        /* No buffer space. */
  58     uint64_t multicast;         /* Multicast packets received. */
  59     uint64_t collisions;
  60
  61     /* Detailed receive errors. */
  62     uint64_t rx_length_errors;
  63     uint64_t rx_over_errors;    /* Receiver ring buff overflow. */
  64     uint64_t rx_crc_errors;     /* Recved pkt with crc error. */
  65     uint64_t rx_frame_errors;   /* Recv'd frame alignment error. */
  66     uint64_t rx_fifo_errors;    /* Recv'r fifo overrun . */
  67     uint64_t rx_missed_errors;  /* Receiver missed packet. */
  68
  69     /* Detailed transmit errors. */
  70     uint64_t tx_aborted_errors;
  71     uint64_t tx_carrier_errors;
  72     uint64_t tx_fifo_errors;
  73     uint64_t tx_heartbeat_errors;
  74     uint64_t tx_window_errors;
  75 };
  76
  77 /* Configuration specific to tunnels. */
  78 struct netdev_tunnel_config {
  79     bool in_key_present;
  80     bool in_key_flow;
  81     ovs_be64 in_key;
  82
  83     bool out_key_present;
  84     bool out_key_flow;
  85     ovs_be64 out_key;
  86
  87     ovs_be16 dst_port;
  88
  89     bool ip_src_flow;
  90     bool ip_dst_flow;
  91     ovs_be32 ip_src;
  92     ovs_be32 ip_dst;
  93
  94     uint8_t ttl;
  95     bool ttl_inherit;
  96
  97     uint8_t tos;
  98     bool tos_inherit;
  99
 100     bool csum;
 101     bool ipsec;
 102     bool dont_fragment;
 103 };
 104
 105 void netdev_run(void);
 106 void netdev_wait(void);
 107
 108 void netdev_enumerate_types(struct sset *types);
 109 bool netdev_is_reserved_name(const char *name);
 110
 111 /* Open and close. */
 112 int netdev_open(const char *name, const char *type, struct netdev **);
 113 void netdev_close(struct netdev *);
 114
 115 void netdev_parse_name(const char *netdev_name, char **name, char **type);
 116
 117 /* Options. */
 118 int netdev_set_config(struct netdev *, const struct smap *args);
 119 int netdev_get_config(const struct netdev *, struct smap *);
 120 const struct netdev_tunnel_config *
 121     netdev_get_tunnel_config(const struct netdev *);
 122
 123 /* Basic properties. */
 124 const char *netdev_get_name(const struct netdev *);
 125 const char *netdev_get_type(const struct netdev *);
 126 const char *netdev_get_type_from_name(const char *);
 127 int netdev_get_mtu(const struct netdev *, int *mtup);
 128 int netdev_set_mtu(const struct netdev *, int mtu);
 129 int netdev_get_ifindex(const struct netdev *);
 130
 131 /* Packet reception. */
 132 int netdev_rx_open(struct netdev *, struct netdev_rx **);
 133 void netdev_rx_close(struct netdev_rx *);
 134
 135 const char *netdev_rx_get_name(const struct netdev_rx *);
 136
 137 int netdev_rx_recv(struct netdev_rx *, struct ofpbuf *);
 138 void netdev_rx_wait(struct netdev_rx *);
 139 int netdev_rx_drain(struct netdev_rx *);
 140
 141 /* Packet transmission. */
 142 int netdev_send(struct netdev *, const struct ofpbuf *);
 143 void netdev_send_wait(struct netdev *);
 144
 145 /* Hardware address. */
 146 int netdev_set_etheraddr(struct netdev *, const uint8_t mac[6]);
 147 int netdev_get_etheraddr(const struct netdev *, uint8_t mac[6]);
 148
 149 /* PHY interface. */
 150 bool netdev_get_carrier(const struct netdev *);
 151 long long int netdev_get_carrier_resets(const struct netdev *);
 152 int netdev_set_miimon_interval(struct netdev *, long long int interval);
 153
 154 /* Features. */
 155 enum netdev_features {
 156     NETDEV_F_10MB_HD =    1 << 0,  /* 10 Mb half-duplex rate support. */
 157     NETDEV_F_10MB_FD =    1 << 1,  /* 10 Mb full-duplex rate support. */
 158     NETDEV_F_100MB_HD =   1 << 2,  /* 100 Mb half-duplex rate support. */
 159     NETDEV_F_100MB_FD =   1 << 3,  /* 100 Mb full-duplex rate support. */
 160     NETDEV_F_1GB_HD =     1 << 4,  /* 1 Gb half-duplex rate support. */
 161     NETDEV_F_1GB_FD =     1 << 5,  /* 1 Gb full-duplex rate support. */
 162     NETDEV_F_10GB_FD =    1 << 6,  /* 10 Gb full-duplex rate support. */
 163     NETDEV_F_40GB_FD =    1 << 7,  /* 40 Gb full-duplex rate support. */
 164     NETDEV_F_100GB_FD =   1 << 8,  /* 100 Gb full-duplex rate support. */
 165     NETDEV_F_1TB_FD =     1 << 9,  /* 1 Tb full-duplex rate support. */
 166     NETDEV_F_OTHER =      1 << 10, /* Other rate, not in the list. */
 167     NETDEV_F_COPPER =     1 << 11, /* Copper medium. */
 168     NETDEV_F_FIBER =      1 << 12, /* Fiber medium. */
 169     NETDEV_F_AUTONEG =    1 << 13, /* Auto-negotiation. */
 170     NETDEV_F_PAUSE =      1 << 14, /* Pause. */
 171     NETDEV_F_PAUSE_ASYM = 1 << 15, /* Asymmetric pause. */
 172 };
 173
 174 int netdev_get_features(const struct netdev *,
 175                         enum netdev_features *current,
 176                         enum netdev_features *advertised,
 177                         enum netdev_features *supported,
 178                         enum netdev_features *peer);
 179 uint64_t netdev_features_to_bps(enum netdev_features features,
 180                                 uint64_t default_bps);
 181 bool netdev_features_is_full_duplex(enum netdev_features features);
 182 int netdev_set_advertisements(struct netdev *, enum netdev_features advertise);
 183
 184 /* Flags. */
 185 enum netdev_flags {
 186     NETDEV_UP = 0x0001,         /* Device enabled? */
 187     NETDEV_PROMISC = 0x0002,    /* Promiscuous mode? */
 188     NETDEV_LOOPBACK = 0x0004    /* This is a loopback device. */
 189 };
 190
 191 int netdev_get_flags(const struct netdev *, enum netdev_flags *);
 192 int netdev_set_flags(struct netdev *, enum netdev_flags,
 193                      struct netdev_saved_flags **);
 194 int netdev_turn_flags_on(struct netdev *, enum netdev_flags,
 195                          struct netdev_saved_flags **);
 196 int netdev_turn_flags_off(struct netdev *, enum netdev_flags,
 197                           struct netdev_saved_flags **);
 198
 199 void netdev_restore_flags(struct netdev_saved_flags *);
 200
 201 /* TCP/IP stack interface. */
 202 int netdev_get_in4(const struct netdev *, struct in_addr *address,
 203                    struct in_addr *netmask);
 204 int netdev_set_in4(struct netdev *, struct in_addr addr, struct in_addr mask);
 205 int netdev_get_in4_by_name(const char *device_name, struct in_addr *in4);
 206 int netdev_get_in6(const struct netdev *, struct in6_addr *);
 207 int netdev_add_router(struct netdev *, struct in_addr router);
 208 int netdev_get_next_hop(const struct netdev *, const struct in_addr *host,
 209                         struct in_addr *next_hop, char **);
 210 int netdev_get_status(const struct netdev *, struct smap *);
 211 int netdev_arp_lookup(const struct netdev *, ovs_be32 ip, uint8_t mac[6]);
 212
 213 struct netdev *netdev_find_dev_by_in4(const struct in_addr *);
 214
 215 /* Statistics. */
 216 int netdev_get_stats(const struct netdev *, struct netdev_stats *);
 217 int netdev_set_stats(struct netdev *, const struct netdev_stats *);
 218
 219 /* Quality of service. */
 220 struct netdev_qos_capabilities {
 221     unsigned int n_queues;
 222 };
 223
 224 struct netdev_queue_stats {
 225     /* Values of unsupported statistics are set to all-1-bits (UINT64_MAX). */
 226     uint64_t tx_bytes;
 227     uint64_t tx_packets;
 228     uint64_t tx_errors;
 229 };
 230
 231 int netdev_set_policing(struct netdev *, uint32_t kbits_rate,
 232                         uint32_t kbits_burst);
 233
 234 int netdev_get_qos_types(const struct netdev *, struct sset *types);
 235 int netdev_get_qos_capabilities(const struct netdev *,
 236                                 const char *type,
 237                                 struct netdev_qos_capabilities *);
 238 int netdev_get_n_queues(const struct netdev *,
 239                         const char *type, unsigned int *n_queuesp);
 240
 241 int netdev_get_qos(const struct netdev *,
 242                    const char **typep, struct smap *details);
 243 int netdev_set_qos(struct netdev *,
 244                    const char *type, const struct smap *details);
 245
 246 int netdev_get_queue(const struct netdev *,
 247                      unsigned int queue_id, struct smap *details);
 248 int netdev_set_queue(struct netdev *,
 249                      unsigned int queue_id, const struct smap *details);
 250 int netdev_delete_queue(struct netdev *, unsigned int queue_id);
 251 int netdev_get_queue_stats(const struct netdev *, unsigned int queue_id,
 252                            struct netdev_queue_stats *);
 253
 254 typedef void netdev_dump_queues_cb(unsigned int queue_id,
 255                                    const struct smap *details, void *aux);
 256 int netdev_dump_queues(const struct netdev *,
 257                        netdev_dump_queues_cb *, void *aux);
 258
 259 typedef void netdev_dump_queue_stats_cb(unsigned int queue_id,
 260                                         struct netdev_queue_stats *,
 261                                         void *aux);
 262 int netdev_dump_queue_stats(const struct netdev *,
 263                             netdev_dump_queue_stats_cb *, void *aux);
 264
 265 unsigned int netdev_change_seq(const struct netdev *netdev);
 266
 267 #ifdef  __cplusplus
 268 }
 269 #endif
 270
 271 #endif /* netdev.h */