caif: prepare support for namespaces

Use struct net to reference CAIF configuration object instead of static variables.
Refactor functions caif_connect_client, caif_disconnect_client and squach
files cfcnfg.c and caif_config_utils.

Signed-off-by: Sjur Brændeland <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

include/net/caif/caif_dev.h

@@ -11,6 +11,7 @@
 #include <net/caif/cfcnfg.h>
 #include <linux/caif/caif_socket.h>
 #include <linux/if.h>
+#include <linux/net.h>
 
 /**
  * struct caif_param - CAIF parameters.
@@ -62,16 +63,18 @@ struct caif_connect_request {
  * E.g. CAIF Socket will call this function for each socket it connects
  * and have one client_layer instance for each socket.
  */
-int caif_connect_client(struct caif_connect_request *conn_req,
+int caif_connect_client(struct net *net,
+			struct caif_connect_request *conn_req,
 			struct cflayer *client_layer, int *ifindex,
 			int *headroom, int *tailroom);
 
 /**
  * caif_disconnect_client - Disconnects a client from the CAIF stack.
  *
- * @client_layer: Client layer to be removed.
+ * @client_layer: Client layer to be disconnected.
  */
-int caif_disconnect_client(struct cflayer *client_layer);
+int caif_disconnect_client(struct net *net, struct cflayer *client_layer);
+
 
 /**
  * caif_client_register_refcnt - register ref-count functions provided by client.
@@ -90,21 +93,6 @@ int caif_disconnect_client(struct cflayer *client_layer);
 void caif_client_register_refcnt(struct cflayer *adapt_layer,
 					void (*hold)(struct cflayer *lyr),
 					void (*put)(struct cflayer *lyr));
-/**
- * caif_connect_req_to_link_param - Translate configuration parameters
- *				    from socket format to internal format.
- * @cnfg:	Pointer to configuration handler
- * @con_req:	Configuration parameters supplied in function
- *		caif_connect_client
- * @channel_setup_param: Parameters supplied to the CAIF Core stack for
- *			 setting up channels.
- *
- */
-
-int caif_connect_req_to_link_param(struct cfcnfg *cnfg,
-				   struct caif_connect_request *con_req,
-				   struct cfctrl_link_param *setup_param);
-
 /**
  * caif_free_client - Free memory used to manage the client in the CAIF Stack.
  *

include/net/caif/cfcnfg.h

@@ -45,6 +45,12 @@ enum cfcnfg_phy_preference {
 	CFPHYPREF_LOOP
 };
 
+/**
+ * cfcnfg_create() - Get the CAIF configuration object given network.
+ * @net:	Network for the CAIF configuration object.
+ */
+struct cfcnfg *get_cfcnfg(struct net *net);
+
 /**
  * cfcnfg_create() - Create the CAIF configuration object.
  */
@@ -65,17 +71,15 @@ void cfcnfg_remove(struct cfcnfg *cfg);
  * @dev:	Pointer to link layer device
  * @phy_layer:	Specify the physical layer. The transmit function
  *		MUST be set in the structure.
- * @phyid:	The assigned physical ID for this layer, used in
- *		cfcnfg_add_adapt_layer to specify PHY for the link.
  * @pref:	The phy (link layer) preference.
  * @fcs:	Specify if checksum is used in CAIF Framing Layer.
- * @stx:	Specify if Start Of Frame extension is used.
+ * @stx:	Specify if Start Of Frame eXtention is used.
  */
 
 void
 cfcnfg_add_phy_layer(struct cfcnfg *cnfg, enum cfcnfg_phy_type phy_type,
 		     struct net_device *dev, struct cflayer *phy_layer,
-		     u16 *phyid, enum cfcnfg_phy_preference pref,
+		     enum cfcnfg_phy_preference pref,
 		     bool fcs, bool stx);
 
 /**
@@ -87,65 +91,6 @@ cfcnfg_add_phy_layer(struct cfcnfg *cnfg, enum cfcnfg_phy_type phy_type,
  */
 int cfcnfg_del_phy_layer(struct cfcnfg *cnfg, struct cflayer *phy_layer);
 
-/**
- * cfcnfg_disconn_adapt_layer - Disconnects an adaptation layer.
- *
- * @cnfg:	Pointer to a CAIF configuration object, created by
- *		cfcnfg_create().
- * @adap_layer: Adaptation layer to be removed.
- */
-int cfcnfg_disconn_adapt_layer(struct cfcnfg *cnfg,
-			struct cflayer *adap_layer);
-
-/**
- * cfcnfg_release_adap_layer - Used by client to release the adaptation layer.
- *
- * @adap_layer: Adaptation layer.
- */
-void cfcnfg_release_adap_layer(struct cflayer *adap_layer);
-
-/**
- * cfcnfg_add_adaptation_layer - Add an adaptation layer to the CAIF stack.
- *
- * The adaptation Layer is where the interface to application or higher-level
- * driver functionality is implemented.
- *
- * @cnfg:		Pointer to a CAIF configuration object, created by
- *			cfcnfg_create().
- * @param:		Link setup parameters.
- * @adap_layer:		Specify the adaptation layer; the receive and
- *			flow-control functions MUST be set in the structure.
- * @ifindex:		Link layer interface index used for this connection.
- * @proto_head:		Protocol head-space needed by CAIF protocol,
- *			excluding link layer.
- * @proto_tail:		Protocol tail-space needed by CAIF protocol,
- *			excluding link layer.
- */
-int cfcnfg_add_adaptation_layer(struct cfcnfg *cnfg,
-			    struct cfctrl_link_param *param,
-			    struct cflayer *adap_layer,
-			    int *ifindex,
-			    int *proto_head,
-			    int *proto_tail);
-
-/**
- * cfcnfg_get_phyid() - Get physical ID, given type.
- * Returns one of the physical interfaces matching the given type.
- * Zero if no match is found.
- * @cnfg:	Configuration object
- * @phy_pref:	Caif Link Layer preference
- */
-struct dev_info *cfcnfg_get_phyid(struct cfcnfg *cnfg,
-		     enum cfcnfg_phy_preference phy_pref);
-
-/**
- * cfcnfg_get_id_from_ifi() - Get the Physical Identifier of ifindex,
- * 			it matches caif physical id with the kernel interface id.
- * @cnfg:	Configuration object
- * @ifi:	ifindex obtained from socket.c bindtodevice.
- */
-int cfcnfg_get_id_from_ifi(struct cfcnfg *cnfg, int ifi);
-
 /**
  * cfcnfg_set_phy_state() - Set the state of the physical interface device.
  * @cnfg:	Configuration object

net/caif/Makefile

@@ -5,7 +5,7 @@ caif-y := caif_dev.o \
 	cffrml.o cfveil.o cfdbgl.o\
 	cfserl.o cfdgml.o  \
 	cfrfml.o cfvidl.o cfutill.o \
-	cfsrvl.o cfpkt_skbuff.o caif_config_util.o
+	cfsrvl.o cfpkt_skbuff.o
 
 obj-$(CONFIG_CAIF) += caif.o
 obj-$(CONFIG_CAIF_NETDEV) += chnl_net.o