lib/netdev.h

   1 /*
   2  * Copyright (c) 2008, 2009 Nicira Networks.
   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
  24 /* Generic interface to network devices.
  25  *
  26  * Currently, there is a single implementation of this interface that supports
  27  * Linux.  The interface should be generic enough to be implementable on other
  28  * operating systems as well. */
  29
  30 struct ofpbuf;
  31 struct in_addr;
  32 struct in6_addr;
  33 struct svec;
  34
  35 enum netdev_flags {
  36     NETDEV_UP = 0x0001,         /* Device enabled? */
  37     NETDEV_PROMISC = 0x0002,    /* Promiscuous mode? */
  38     NETDEV_LOOPBACK = 0x0004    /* This is a loopback device. */
  39 };
  40
  41 enum netdev_pseudo_ethertype {
  42     NETDEV_ETH_TYPE_NONE = -128, /* Receive no frames. */
  43     NETDEV_ETH_TYPE_ANY,         /* Receive all frames. */
  44     NETDEV_ETH_TYPE_802_2        /* Receive all IEEE 802.2 frames. */
  45 };
  46
  47 /* Network device statistics.
  48  *
  49  * Values of unsupported statistics are set to all-1-bits (UINT64_MAX). */
  50 struct netdev_stats {
  51     uint64_t rx_packets;        /* Total packets received. */
  52     uint64_t tx_packets;        /* Total packets transmitted. */
  53     uint64_t rx_bytes;          /* Total bytes received. */
  54     uint64_t tx_bytes;          /* Total bytes transmitted. */
  55     uint64_t rx_errors;         /* Bad packets received. */
  56     uint64_t tx_errors;         /* Packet transmit problems. */
  57     uint64_t rx_dropped;        /* No buffer space. */
  58     uint64_t tx_dropped;        /* No buffer space. */
  59     uint64_t multicast;         /* Multicast packets received. */
  60     uint64_t collisions;
  61
  62     /* Detailed receive errors. */
  63     uint64_t rx_length_errors;
  64     uint64_t rx_over_errors;    /* Receiver ring buff overflow. */
  65     uint64_t rx_crc_errors;     /* Recved pkt with crc error. */
  66     uint64_t rx_frame_errors;   /* Recv'd frame alignment error. */
  67     uint64_t rx_fifo_errors;    /* Recv'r fifo overrun . */
  68     uint64_t rx_missed_errors;  /* Receiver missed packet. */
  69
  70     /* Detailed transmit errors. */
  71     uint64_t tx_aborted_errors;
  72     uint64_t tx_carrier_errors;
  73     uint64_t tx_fifo_errors;
  74     uint64_t tx_heartbeat_errors;
  75     uint64_t tx_window_errors;
  76 };
  77
  78 struct netdev;
  79
  80 int netdev_initialize(void);
  81 void netdev_run(void);
  82 void netdev_wait(void);
  83
  84 int netdev_open(const char *name, int ethertype, struct netdev **);
  85 void netdev_close(struct netdev *);
  86
  87 bool netdev_exists(const char *name);
  88
  89 int netdev_enumerate(struct svec *);
  90
  91 const char *netdev_get_name(const struct netdev *);
  92 int netdev_get_mtu(const struct netdev *, int *mtup);
  93
  94 int netdev_recv(struct netdev *, struct ofpbuf *);
  95 void netdev_recv_wait(struct netdev *);
  96 int netdev_drain(struct netdev *);
  97
  98 int netdev_send(struct netdev *, const struct ofpbuf *);
  99 void netdev_send_wait(struct netdev *);
 100
 101 int netdev_set_etheraddr(struct netdev *, const uint8_t mac[6]);
 102 int netdev_get_etheraddr(const struct netdev *, uint8_t mac[6]);
 103
 104 int netdev_get_carrier(const struct netdev *, bool *carrier);
 105 int netdev_get_features(struct netdev *,
 106                         uint32_t *current, uint32_t *advertised,
 107                         uint32_t *supported, uint32_t *peer);
 108 int netdev_set_advertisements(struct netdev *, uint32_t advertise);
 109
 110 int netdev_get_in4(const struct netdev *, struct in_addr *address,
 111                    struct in_addr *netmask);
 112 int netdev_set_in4(struct netdev *, struct in_addr addr, struct in_addr mask);
 113 int netdev_get_in6(const struct netdev *, struct in6_addr *);
 114 int netdev_add_router(struct netdev *, struct in_addr router);
 115 int netdev_get_next_hop(const struct netdev *, const struct in_addr *host,
 116                         struct in_addr *next_hop, char **);
 117 int netdev_arp_lookup(const struct netdev *, uint32_t ip, uint8_t mac[6]);
 118
 119 int netdev_get_flags(const struct netdev *, enum netdev_flags *);
 120 int netdev_set_flags(struct netdev *, enum netdev_flags, bool permanent);
 121 int netdev_turn_flags_on(struct netdev *, enum netdev_flags, bool permanent);
 122 int netdev_turn_flags_off(struct netdev *, enum netdev_flags, bool permanent);
 123
 124 int netdev_get_stats(const struct netdev *, struct netdev_stats *);
 125 int netdev_set_policing(struct netdev *, uint32_t kbits_rate,
 126                         uint32_t kbits_burst);
 127
 128 int netdev_get_vlan_vid(const struct netdev *, int *vlan_vid);
 129 struct netdev *netdev_find_dev_by_in4(const struct in_addr *);
 130
 131 struct netdev_monitor *netdev_monitor_create(void);
 132 void netdev_monitor_destroy(struct netdev_monitor *);
 133 int netdev_monitor_add(struct netdev_monitor *, struct netdev *);
 134 void netdev_monitor_remove(struct netdev_monitor *, struct netdev *);
 135 int netdev_monitor_poll(struct netdev_monitor *, char **devnamep);
 136 void netdev_monitor_poll_wait(const struct netdev_monitor *);
 137
 138 #endif /* netdev.h */