mdw@git.distorted.org.uk Git - secnet/blob - netlink.h

   1 #ifndef netlink_h
   2 #define netlink_h
   3
   4 #include "ipaddr.h"
   5
   6 #define DEFAULT_BUFSIZE 2048
   7 #define DEFAULT_MTU 1000
   8 #define ICMP_BUFSIZE 1024
   9
  10 struct netlink_client {
  11     struct subnet_list *networks;
  12     netlink_deliver_fn *deliver;
  13     void *dst;
  14     string_t name;
  15     uint32_t link_quality;
  16     uint32_t options;
  17     struct netlink_client *next;
  18 };
  19
  20 struct netlink_route {
  21     struct subnet net;
  22     bool_t hard;
  23     bool_t allow_route;
  24     bool_t up;
  25     bool_t kup;
  26     uint32_t quality; /* provided by client */
  27     struct netlink_client *c;
  28 };
  29
  30 typedef bool_t netlink_route_fn(void *cst, struct netlink_route *route);
  31
  32 /* Netlink provides one function to the device driver, to call to deliver
  33    a packet from the device. The device driver provides one function to
  34    netlink, for it to call to deliver a packet to the device. */
  35
  36 struct netlink {
  37     closure_t cl;
  38     struct netlink_if ops;
  39     void *dst; /* Pointer to host interface state */
  40     string_t name;
  41     uint32_t max_start_pad;
  42     uint32_t max_end_pad;
  43     struct subnet_list networks;
  44     struct subnet_list exclude_remote_networks;
  45     uint32_t secnet_address; /* our own address */
  46     uint32_t mtu;
  47     struct netlink_client *clients;
  48     netlink_deliver_fn *deliver_to_host; /* Provided by driver */
  49     netlink_route_fn *set_route; /* Provided by driver */
  50     struct buffer_if icmp; /* Buffer for assembly of outgoing ICMP */
  51     uint32_t n_routes; /* How many routes do we know about? */
  52     struct netlink_route *routes;
  53 };
  54
  55 extern netlink_deliver_fn *netlink_init(struct netlink *st,
  56                                         void *dst, struct cloc loc,
  57                                         dict_t *dict, string_t description,
  58                                         netlink_route_fn *set_route,
  59                                         netlink_deliver_fn *to_host);
  60
  61 #endif /* netlink_h */