network: make request_process_address() and friends take Link and corresponding object

This also renames e.g. request_process_address() -> address_process_request().

Also, this drops type checks such as `assert(req->type == REQUEST_TYPE_ADDRESS)`,
as in the later commits, the function of processing request, e.g.
`address_process_request()`, will be assigned to the Request object when
it is created. And the request type will be used to distinguish and to
avoid deduplicating requests which do not have any assigned objects,
like REQUEST_TYPE_DHCP4_CLIENT. Hence, the type checks in process functions
are mostly not necessary and redundant.

This is mostly cleanups and preparation for later commits, and should
not change any behavior.

1 files changed, 4 insertions, 6 deletions

diff --git a/src/network/networkd-bridge-mdb.c b/src/network/networkd-bridge-mdb.c
index 4cd98f3545..b9320f7ea2 100644
--- a/src/network/networkd-bridge-mdb.c
+++ b/src/network/networkd-bridge-mdb.c
@@ -205,19 +205,17 @@ static bool bridge_mdb_is_ready_to_configure(Link *link) {
         return true;
 }
 
-int request_process_bridge_mdb(Request *req) {
-        Link *link;
+int bridge_mdb_process_request(Request *req, Link *link, void *userdata) {
+        BridgeMDB *mdb = ASSERT_PTR(userdata);
         int r;
 
         assert(req);
-        assert(req->mdb);
-        assert(req->type == REQUEST_TYPE_BRIDGE_MDB);
-        assert_se(link = req->link);
+        assert(link);
 
         if (!bridge_mdb_is_ready_to_configure(link))
                 return 0;
 
-        r = bridge_mdb_configure(req->mdb, link, req);
+        r = bridge_mdb_configure(mdb, link, req);
         if (r < 0)
                 return log_link_warning_errno(link, r, "Failed to configure bridge MDB: %m");