caif: code cleanup

Cleanup of new CAIF code.
  * make local functions static
  * remove code that is never used
  * expand get_caif_conf() since wrapper is no longer needed
  * make args to comparison functions const
  * rename connect_req_to_link_param to keep exported names
    consistent

Compile tested only.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/caif/caif_dev.h

@@ -74,34 +74,17 @@ int caif_connect_client(struct caif_connect_request *conn_req,
 int caif_disconnect_client(struct cflayer *client_layer);
 
 /**
- * caif_release_client - Release adaptation layer reference to client.
- *
- * @client_layer: Client layer.
- *
- * Releases a client/adaptation layer use of the caif stack.
- * This function must be used after caif_disconnect_client to
- * decrease the reference count of the service layer.
- */
-void caif_release_client(struct cflayer *client_layer);
-
-/**
- * connect_req_to_link_param - Translate configuration parameters
- *				from socket format to internal format.
+ * 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 connect_req_to_link_param(struct cfcnfg *cnfg,
-				struct caif_connect_request *con_req,
-				struct cfctrl_link_param *channel_setup_param);
-
-/**
- * get_caif_conf() - Get the configuration handler.
- */
-struct cfcnfg *get_caif_conf(void);
-
+int caif_connect_req_to_link_param(struct cfcnfg *cnfg,
+				   struct caif_connect_request *con_req,
+				   struct cfctrl_link_param *setup_param);
 
 #endif /* CAIF_DEV_H_ */

include/net/caif/cfctrl.h

@@ -121,19 +121,9 @@ int cfctrl_linkup_request(struct cflayer *cfctrl,
 			   struct cflayer *user_layer);
 int  cfctrl_linkdown_req(struct cflayer *cfctrl, u8 linkid,
 			 struct cflayer *client);
-void cfctrl_sleep_req(struct cflayer *cfctrl);
-void cfctrl_wake_req(struct cflayer *cfctrl);
-void cfctrl_getstartreason_req(struct cflayer *cfctrl);
+
 struct cflayer *cfctrl_create(void);
-void cfctrl_set_dnlayer(struct cflayer *this, struct cflayer *dn);
-void cfctrl_set_uplayer(struct cflayer *this, struct cflayer *up);
 struct cfctrl_rsp *cfctrl_get_respfuncs(struct cflayer *layer);
-bool cfctrl_req_eq(struct cfctrl_request_info *r1,
-		   struct cfctrl_request_info *r2);
-void cfctrl_insert_req(struct cfctrl *ctrl,
-			      struct cfctrl_request_info *req);
-struct cfctrl_request_info *cfctrl_remove_req(struct cfctrl *ctrl,
-					      struct cfctrl_request_info *req);
 void cfctrl_cancel_req(struct cflayer *layr, struct cflayer *adap_layer);
 
 #endif				/* CFCTRL_H_ */

include/net/caif/cfmuxl.h

@@ -16,7 +16,5 @@ int cfmuxl_set_uplayer(struct cflayer *layr, struct cflayer *up, u8 linkid);
 struct cflayer *cfmuxl_remove_dnlayer(struct cflayer *layr, u8 phyid);
 int cfmuxl_set_dnlayer(struct cflayer *layr, struct cflayer *up, u8 phyid);
 struct cflayer *cfmuxl_remove_uplayer(struct cflayer *layr, u8 linkid);
-bool cfmuxl_is_phy_inuse(struct cflayer *layr, u8 phyid);
-u8 cfmuxl_get_phyid(struct cflayer *layr, u8 channel_id);
 
 #endif				/* CFMUXL_H_ */

include/net/caif/cfpkt.h

@@ -16,12 +16,6 @@ struct cfpkt;
  */
 struct cfpkt *cfpkt_create(u16 len);
 
-/* Create a CAIF packet.
- * data Data to copy.
- * len Length of packet to be created
- * @return New packet.
- */
-struct cfpkt *cfpkt_create_uplink(const unsigned char *data, unsigned int len);
 /*
  * Destroy a CAIF Packet.
  * pkt Packet to be destoyed.
@@ -181,22 +175,6 @@ u16 cfpkt_iterate(struct cfpkt *pkt,
 		u16 (*iter_func)(u16 chks, void *buf, u16 len),
 		u16 data);
 
-/* Append by giving user access to packet buffer
- * cfpkt Packet to append to
- * buf Buffer inside pkt that user shall copy data into
- * buflen Length of buffer and number of bytes added to packet
- * @return 0 on error, 1 on success
- */
-int cfpkt_raw_append(struct cfpkt *cfpkt, void **buf, unsigned int buflen);
-
-/* Extract by giving user access to packet buffer
- * cfpkt Packet to extract from
- * buf Buffer inside pkt that user shall copy data from
- * buflen Length of buffer and number of bytes removed from packet
- * @return 0 on error, 1 on success
- */
-int cfpkt_raw_extract(struct cfpkt *cfpkt, void **buf, unsigned int buflen);
-
 /* Map from a "native" packet (e.g. Linux Socket Buffer) to a CAIF packet.
  *  dir - Direction indicating whether this packet is to be sent or received.
  *  nativepkt  - The native packet to be transformed to a CAIF packet
@@ -210,59 +188,6 @@ struct cfpkt *cfpkt_fromnative(enum caif_direction dir, void *nativepkt);
  */
 void *cfpkt_tonative(struct cfpkt *pkt);
 
-/*
- * Insert a packet in the packet queue.
- * pktq Packet queue to insert into
- * pkt Packet to be inserted in queue
- * prio Priority of packet
- */
-void cfpkt_queue(struct cfpktq *pktq, struct cfpkt *pkt,
-		 unsigned short prio);
-
-/*
- * Remove a packet from the packet queue.
- * pktq Packet queue to fetch packets from.
- * @return Dequeued packet.
- */
-struct cfpkt *cfpkt_dequeue(struct cfpktq *pktq);
-
-/*
- * Peek into a packet from the packet queue.
- * pktq Packet queue to fetch packets from.
- * @return Peeked packet.
- */
-struct cfpkt *cfpkt_qpeek(struct cfpktq *pktq);
-
-/*
- * Initiates the packet queue.
- * @return Pointer to new packet queue.
- */
-struct cfpktq *cfpktq_create(void);
-
-/*
- * Get the number of packets in the queue.
- * pktq Packet queue to fetch count from.
- * @return Number of packets in queue.
- */
-int cfpkt_qcount(struct cfpktq *pktq);
-
-/*
- * Put content of packet into buffer for debuging purposes.
- * pkt Packet to copy data from
- * buf Buffer to copy data into
- * buflen Length of data to copy
- * @return Pointer to copied data
- */
-char *cfpkt_log_pkt(struct cfpkt *pkt, char *buf, int buflen);
-
-/*
- * Clones a packet and releases the original packet.
- * This is used for taking ownership of a packet e.g queueing.
- * pkt Packet to clone and release.
- * @return Cloned packet.
- */
-struct cfpkt *cfpkt_clone_release(struct cfpkt *pkt);
-
 
 /*
  * Returns packet information for a packet.

include/net/caif/cfsrvl.h

@@ -22,7 +22,6 @@ struct cfsrvl {
 	struct kref ref;
 };
 
-void cfsrvl_release(struct kref *kref);
 struct cflayer *cfvei_create(u8 linkid, struct dev_info *dev_info);
 struct cflayer *cfdgml_create(u8 linkid, struct dev_info *dev_info);
 struct cflayer *cfutill_create(u8 linkid, struct dev_info *dev_info);
@@ -31,7 +30,7 @@ struct cflayer *cfrfml_create(u8 linkid, struct dev_info *dev_info,
 				int mtu_size);
 struct cflayer *cfdbgl_create(u8 linkid, struct dev_info *dev_info);
 bool cfsrvl_phyid_match(struct cflayer *layer, int phyid);
-void cfservl_destroy(struct cflayer *layer);
+
 void cfsrvl_init(struct cfsrvl *service,
 			u8 channel_id,
 			struct dev_info *dev_info,

net/caif/caif_config_util.c

@@ -10,9 +10,9 @@
 #include <net/caif/cfcnfg.h>
 #include <net/caif/caif_dev.h>
 
-int connect_req_to_link_param(struct cfcnfg *cnfg,
-				struct caif_connect_request *s,
-				struct cfctrl_link_param *l)
+int caif_connect_req_to_link_param(struct cfcnfg *cnfg,
+				   struct caif_connect_request *s,
+				   struct cfctrl_link_param *l)
 {
 	struct dev_info *dev_info;
 	enum cfcnfg_phy_preference pref;

net/caif/caif_dev.c

@@ -257,7 +257,7 @@ static int caif_device_notify(struct notifier_block *me, unsigned long what,
 			break;
 		}
 		dev_hold(dev);
-		cfcnfg_add_phy_layer(get_caif_conf(),
+		cfcnfg_add_phy_layer(cfg,
 				     phy_type,
 				     dev,
 				     &caifd->layer,
@@ -300,7 +300,7 @@ static int caif_device_notify(struct notifier_block *me, unsigned long what,
 		if (atomic_read(&caifd->in_use))
 			netdev_warn(dev,
 				    "Unregistering an active CAIF device\n");
-		cfcnfg_del_phy_layer(get_caif_conf(), &caifd->layer);
+		cfcnfg_del_phy_layer(cfg, &caifd->layer);
 		dev_put(dev);
 		atomic_set(&caifd->state, what);
 		break;
@@ -322,41 +322,29 @@ static struct notifier_block caif_device_notifier = {
 	.priority = 0,
 };
 
-
-struct cfcnfg *get_caif_conf(void)
-{
-	return cfg;
-}
-EXPORT_SYMBOL(get_caif_conf);
-
 int caif_connect_client(struct caif_connect_request *conn_req,
 			struct cflayer *client_layer, int *ifindex,
 			int *headroom, int *tailroom)
 {
 	struct cfctrl_link_param param;
 	int ret;
-	ret = connect_req_to_link_param(get_caif_conf(), conn_req, &param);
+
+	ret = caif_connect_req_to_link_param(cfg, conn_req, &param);
 	if (ret)
 		return ret;
 	/* Hook up the adaptation layer. */
-	return cfcnfg_add_adaptation_layer(get_caif_conf(), &param,
+	return cfcnfg_add_adaptation_layer(cfg, &param,
 					client_layer, ifindex,
 					headroom, tailroom);
 }
 EXPORT_SYMBOL(caif_connect_client);
 
 int caif_disconnect_client(struct cflayer *adap_layer)
 {
-       return cfcnfg_disconn_adapt_layer(get_caif_conf(), adap_layer);
+	return cfcnfg_disconn_adapt_layer(cfg, adap_layer);
 }
 EXPORT_SYMBOL(caif_disconnect_client);
 
-void caif_release_client(struct cflayer *adap_layer)
-{
-       cfcnfg_release_adap_layer(adap_layer);
-}
-EXPORT_SYMBOL(caif_release_client);
-
 /* Per-namespace Caif devices handling */
 static int caif_init_net(struct net *net)
 {

net/caif/cfcnfg.c

@@ -253,7 +253,7 @@ static void cfcnfg_linkdestroy_rsp(struct cflayer *layer, u8 channel_id)
 {
 }
 
-int protohead[CFCTRL_SRV_MASK] = {
+static const int protohead[CFCTRL_SRV_MASK] = {
 	[CFCTRL_SRV_VEI] = 4,
 	[CFCTRL_SRV_DATAGRAM] = 7,
 	[CFCTRL_SRV_UTIL] = 4,

net/caif/cfctrl.c

@@ -58,7 +58,8 @@ struct cflayer *cfctrl_create(void)
 	return &this->serv.layer;
 }
 
-static bool param_eq(struct cfctrl_link_param *p1, struct cfctrl_link_param *p2)
+static bool param_eq(const struct cfctrl_link_param *p1,
+			const struct cfctrl_link_param *p2)
 {
 	bool eq =
 	    p1->linktype == p2->linktype &&
@@ -100,8 +101,8 @@ static bool param_eq(struct cfctrl_link_param *p1, struct cfctrl_link_param *p2)
 	return false;
 }
 
-bool cfctrl_req_eq(struct cfctrl_request_info *r1,
-		   struct cfctrl_request_info *r2)
+static bool cfctrl_req_eq(const struct cfctrl_request_info *r1,
+			  const struct cfctrl_request_info *r2)
 {
 	if (r1->cmd != r2->cmd)
 		return false;
@@ -112,7 +113,7 @@ bool cfctrl_req_eq(struct cfctrl_request_info *r1,
 }
 
 /* Insert request at the end */
-void cfctrl_insert_req(struct cfctrl *ctrl,
+static void cfctrl_insert_req(struct cfctrl *ctrl,
 			      struct cfctrl_request_info *req)
 {
 	spin_lock(&ctrl->info_list_lock);
@@ -123,8 +124,8 @@ void cfctrl_insert_req(struct cfctrl *ctrl,
 }
 
 /* Compare and remove request */
-struct cfctrl_request_info *cfctrl_remove_req(struct cfctrl *ctrl,
-					      struct cfctrl_request_info *req)
+static struct cfctrl_request_info *cfctrl_remove_req(struct cfctrl *ctrl,
+						struct cfctrl_request_info *req)
 {
 	struct cfctrl_request_info *p, *tmp, *first;
 
@@ -154,16 +155,6 @@ struct cfctrl_rsp *cfctrl_get_respfuncs(struct cflayer *layer)
 	return &this->res;
 }
 
-void cfctrl_set_dnlayer(struct cflayer *this, struct cflayer *dn)
-{
-	this->dn = dn;
-}
-
-void cfctrl_set_uplayer(struct cflayer *this, struct cflayer *up)
-{
-	this->up = up;
-}
-
 static void init_info(struct caif_payload_info *info, struct cfctrl *cfctrl)
 {
 	info->hdr_len = 0;
@@ -304,58 +295,6 @@ int cfctrl_linkdown_req(struct cflayer *layer, u8 channelid,
 	return ret;
 }
 
-void cfctrl_sleep_req(struct cflayer *layer)
-{
-	int ret;
-	struct cfctrl *cfctrl = container_obj(layer);
-	struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN);
-	if (!pkt) {
-		pr_warn("Out of memory\n");
-		return;
-	}
-	cfpkt_addbdy(pkt, CFCTRL_CMD_SLEEP);
-	init_info(cfpkt_info(pkt), cfctrl);
-	ret =
-	    cfctrl->serv.layer.dn->transmit(cfctrl->serv.layer.dn, pkt);
-	if (ret < 0)
-		cfpkt_destroy(pkt);
-}
-
-void cfctrl_wake_req(struct cflayer *layer)
-{
-	int ret;
-	struct cfctrl *cfctrl = container_obj(layer);
-	struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN);
-	if (!pkt) {
-		pr_warn("Out of memory\n");
-		return;
-	}
-	cfpkt_addbdy(pkt, CFCTRL_CMD_WAKE);
-	init_info(cfpkt_info(pkt), cfctrl);
-	ret =
-	    cfctrl->serv.layer.dn->transmit(cfctrl->serv.layer.dn, pkt);
-	if (ret < 0)
-		cfpkt_destroy(pkt);
-}
-
-void cfctrl_getstartreason_req(struct cflayer *layer)
-{
-	int ret;
-	struct cfctrl *cfctrl = container_obj(layer);
-	struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN);
-	if (!pkt) {
-		pr_warn("Out of memory\n");
-		return;
-	}
-	cfpkt_addbdy(pkt, CFCTRL_CMD_START_REASON);
-	init_info(cfpkt_info(pkt), cfctrl);
-	ret =
-	    cfctrl->serv.layer.dn->transmit(cfctrl->serv.layer.dn, pkt);
-	if (ret < 0)
-		cfpkt_destroy(pkt);
-}
-
-
 void cfctrl_cancel_req(struct cflayer *layr, struct cflayer *adap_layer)
 {
 	struct cfctrl_request_info *p, *tmp;