lib/dpif-linux.h

   1 /*
   2  * Copyright (c) 2010, 2011 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 DPIF_LINUX_H
  18 #define DPIF_LINUX_H 1
  19
  20 #include <stdbool.h>
  21 #include <stddef.h>
  22 #include <stdint.h>
  23 #include <linux/openvswitch.h>
  24
  25 struct ofpbuf;
  26
  27 struct dpif_linux_vport {
  28     /* Generic Netlink header. */
  29     uint8_t cmd;
  30
  31     /* ovs_vport header. */
  32     int dp_ifindex;
  33     uint32_t port_no;                      /* UINT32_MAX if unknown. */
  34     enum ovs_vport_type type;
  35
  36     /* Attributes.
  37      *
  38      * The 'stats' member points to 64-bit data that might only be aligned on
  39      * 32-bit boundaries, so use get_unaligned_u64() to access its values.
  40      */
  41     const char *name;                      /* OVS_VPORT_ATTR_NAME. */
  42     const uint32_t *upcall_pid;            /* OVS_VPORT_ATTR_UPCALL_PID. */
  43     const struct ovs_vport_stats *stats;   /* OVS_VPORT_ATTR_STATS. */
  44     const uint8_t *address;                /* OVS_VPORT_ATTR_ADDRESS. */
  45     const struct nlattr *options;          /* OVS_VPORT_ATTR_OPTIONS. */
  46     size_t options_len;
  47 };
  48
  49 void dpif_linux_vport_init(struct dpif_linux_vport *);
  50
  51 int dpif_linux_vport_transact(const struct dpif_linux_vport *request,
  52                               struct dpif_linux_vport *reply,
  53                               struct ofpbuf **bufp);
  54 int dpif_linux_vport_get(const char *name, struct dpif_linux_vport *reply,
  55                          struct ofpbuf **bufp);
  56
  57 bool dpif_linux_is_internal_device(const char *name);
  58
  59 int dpif_linux_vport_send(int dp_ifindex, uint32_t port_no,
  60                           const void *data, size_t size);
  61
  62 #endif /* dpif-linux.h */