#include "interface.h"
#include "proto.h"
+static struct avl_tree handlers;
+
+void add_proto_handler(struct proto_handler *p)
+{
+ if (!handlers.comp)
+ avl_init(&handlers, avl_strcmp, false, NULL);
+
+ if (p->avl.key)
+ return;
+
+ p->avl.key = p->name;
+ avl_insert(&handlers, &p->avl);
+}
+
static void
default_proto_free(struct interface_proto_state *proto)
{
}
static int
-default_proto_handler(struct interface_proto_state *proto,
+invalid_proto_handler(struct interface_proto_state *proto,
enum interface_proto_cmd cmd, bool force)
{
+ return -1;
+}
+
+static int
+no_proto_handler(struct interface_proto_state *proto,
+ enum interface_proto_cmd cmd, bool force)
+{
return 0;
}
-struct interface_proto_state *get_default_proto(void)
+static struct interface_proto_state *
+default_proto_attach(const struct proto_handler *h,
+ struct interface *iface, struct blob_attr *attr)
{
struct interface_proto_state *proto;
proto = calloc(1, sizeof(*proto));
- proto->handler = default_proto_handler;
proto->free = default_proto_free;
proto->flags = PROTO_FLAG_IMMEDIATE;
+ proto->handler = no_proto_handler;
return proto;
}
-int interface_proto_event(struct interface_proto_state *proto,
- enum interface_proto_cmd cmd, bool force)
+static const struct proto_handler no_proto = {
+ .name = "none",
+ .attach = default_proto_attach,
+};
+
+static const struct proto_handler *
+get_proto_handler(const char *name)
+{
+ struct proto_handler *proto;
+
+ if (!strcmp(name, "none"))
+ return &no_proto;
+
+ if (!handlers.comp)
+ return NULL;
+
+ return avl_find_element(&handlers, name, proto, avl);
+}
+
+void
+proto_init_interface(struct interface *iface, struct blob_attr *attr)
+{
+ const struct proto_handler *proto = iface->proto_handler;
+ struct interface_proto_state *state = NULL;
+
+ if (proto)
+ state = proto->attach(proto, iface, attr);
+
+ if (!state) {
+ state = no_proto.attach(&no_proto, iface, attr);
+ state->handler = invalid_proto_handler;
+ }
+
+ interface_set_proto_state(iface, state);
+}
+
+void
+proto_attach_interface(struct interface *iface, const char *proto_name)
+{
+ const struct proto_handler *proto = NULL;
+
+ if (!proto_name) {
+ interface_add_error(iface, "proto", "NO_PROTO", NULL, 0);
+ return;
+ }
+
+ proto = get_proto_handler(proto_name);
+ if (!proto)
+ interface_add_error(iface, "proto", "INVALID_PROTO", NULL, 0);
+
+ iface->proto_handler = proto;
+}
+
+int
+interface_proto_event(struct interface_proto_state *proto,
+ enum interface_proto_cmd cmd, bool force)
{
enum interface_event ev;
int ret;