Import release 0.1.2

[secnet.git] / netlink.h

diff --git a/netlink.h b/netlink.h
new file mode 100644 (file)
index 0000000..faf3282
--- /dev/null
+++ b/netlink.h
@@ -0,0 +1,58 @@
+#ifndef netlink_h
+#define netlink_h
+
+#define DEFAULT_BUFSIZE 2048
+#define DEFAULT_MTU 1000
+#define ICMP_BUFSIZE 1024
+
+struct netlink_client {
+    struct subnet_list *networks;
+    netlink_deliver_fn *deliver;
+    void *dst;
+    string_t name;
+    uint32_t link_quality;
+    bool_t hard_routes;
+    struct netlink_client *next;
+};
+
+struct netlink_route {
+    struct subnet net;
+    bool_t hard;
+    bool_t up;
+    bool_t kup;
+    struct netlink_client *c;
+};
+
+typedef bool_t netlink_route_fn(void *cst, struct netlink_route *route);
+
+/* Netlink provides one function to the device driver, to call to deliver
+   a packet from the device. The device driver provides one function to
+   netlink, for it to call to deliver a packet to the device. */
+
+struct netlink {
+    closure_t cl;
+    struct netlink_if ops;
+    void *dst; /* Pointer to host interface state */
+    string_t name;
+    uint32_t max_start_pad;
+    uint32_t max_end_pad;
+    struct subnet_list networks;
+    struct subnet_list exclude_remote_networks;
+    uint32_t local_address; /* host interface address */
+    uint32_t secnet_address; /* our own address */
+    uint32_t mtu;
+    struct netlink_client *clients;
+    netlink_deliver_fn *deliver_to_host; /* Provided by driver */
+    netlink_route_fn *set_route; /* Provided by driver */
+    struct buffer_if icmp; /* Buffer for assembly of outgoing ICMP */
+    uint32_t n_routes; /* How many routes do we know about? */
+    struct netlink_route *routes;
+};
+
+extern netlink_deliver_fn *netlink_init(struct netlink *st,
+                                       void *dst, struct cloc loc,
+                                       dict_t *dict, string_t description,
+                                       netlink_route_fn *set_route,
+                                       netlink_deliver_fn *to_host);
+
+#endif /* netlink_h */