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

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