diff options
Diffstat (limited to 'include/net/caif')
-rw-r--r-- | include/net/caif/caif_dev.h | 50 | ||||
-rw-r--r-- | include/net/caif/caif_hsi.h | 145 | ||||
-rw-r--r-- | include/net/caif/caif_layer.h | 36 | ||||
-rw-r--r-- | include/net/caif/cfcnfg.h | 71 | ||||
-rw-r--r-- | include/net/caif/cfctrl.h | 15 | ||||
-rw-r--r-- | include/net/caif/cffrml.h | 7 | ||||
-rw-r--r-- | include/net/caif/cfmuxl.h | 2 | ||||
-rw-r--r-- | include/net/caif/cfpkt.h | 76 | ||||
-rw-r--r-- | include/net/caif/cfsrvl.h | 32 |
9 files changed, 230 insertions, 204 deletions
diff --git a/include/net/caif/caif_dev.h b/include/net/caif/caif_dev.h index 8eff83b95366..c011281d92c0 100644 --- a/include/net/caif/caif_dev.h +++ b/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. @@ -62,46 +63,45 @@ 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_release_client - Release adaptation layer reference to client. + * caif_client_register_refcnt - register ref-count functions provided by client. * - * @client_layer: Client layer. + * @adapt_layer: Client layer using CAIF Stack. + * @hold: Function provided by client layer increasing ref-count + * @put: Function provided by client layer decreasing ref-count * - * 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. - * @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. + * Client of the CAIF Stack must register functions for reference counting. + * These functions are called by the CAIF Stack for every upstream packet, + * and must therefore be implemented efficiently. * + * Client should call caif_free_client when reference count degrease to zero. */ -int connect_req_to_link_param(struct cfcnfg *cnfg, - struct caif_connect_request *con_req, - struct cfctrl_link_param *channel_setup_param); +void caif_client_register_refcnt(struct cflayer *adapt_layer, + void (*hold)(struct cflayer *lyr), + void (*put)(struct cflayer *lyr)); /** - * get_caif_conf() - Get the configuration handler. + * caif_free_client - Free memory used to manage the client in the CAIF Stack. + * + * @client_layer: Client layer to be removed. + * + * This function must be called from client layer in order to free memory. + * Caller must guarantee that no packets are in flight upstream when calling + * this function. */ -struct cfcnfg *get_caif_conf(void); - +void caif_free_client(struct cflayer *adap_layer); #endif /* CAIF_DEV_H_ */ diff --git a/include/net/caif/caif_hsi.h b/include/net/caif/caif_hsi.h new file mode 100644 index 000000000000..c5dedd87b4cb --- /dev/null +++ b/include/net/caif/caif_hsi.h @@ -0,0 +1,145 @@ +/* + * Copyright (C) ST-Ericsson AB 2010 + * Contact: Sjur Brendeland / sjur.brandeland@stericsson.com + * Author: Daniel Martensson / daniel.martensson@stericsson.com + * Dmitry.Tarnyagin / dmitry.tarnyagin@stericsson.com + * License terms: GNU General Public License (GPL) version 2 + */ + +#ifndef CAIF_HSI_H_ +#define CAIF_HSI_H_ + +#include <net/caif/caif_layer.h> +#include <net/caif/caif_device.h> +#include <linux/atomic.h> + +/* + * Maximum number of CAIF frames that can reside in the same HSI frame. + */ +#define CFHSI_MAX_PKTS 15 + +/* + * Maximum number of bytes used for the frame that can be embedded in the + * HSI descriptor. + */ +#define CFHSI_MAX_EMB_FRM_SZ 96 + +/* + * Decides if HSI buffers should be prefilled with 0xFF pattern for easier + * debugging. Both TX and RX buffers will be filled before the transfer. + */ +#define CFHSI_DBG_PREFILL 0 + +/* Structure describing a HSI packet descriptor. */ +#pragma pack(1) /* Byte alignment. */ +struct cfhsi_desc { + u8 header; + u8 offset; + u16 cffrm_len[CFHSI_MAX_PKTS]; + u8 emb_frm[CFHSI_MAX_EMB_FRM_SZ]; +}; +#pragma pack() /* Default alignment. */ + +/* Size of the complete HSI packet descriptor. */ +#define CFHSI_DESC_SZ (sizeof(struct cfhsi_desc)) + +/* + * Size of the complete HSI packet descriptor excluding the optional embedded + * CAIF frame. + */ +#define CFHSI_DESC_SHORT_SZ (CFHSI_DESC_SZ - CFHSI_MAX_EMB_FRM_SZ) + +/* + * Maximum bytes transferred in one transfer. + */ +/* TODO: 4096 is temporary... */ +#define CFHSI_MAX_PAYLOAD_SZ (CFHSI_MAX_PKTS * 4096) + +/* Size of the complete HSI TX buffer. */ +#define CFHSI_BUF_SZ_TX (CFHSI_DESC_SZ + CFHSI_MAX_PAYLOAD_SZ) + +/* Size of the complete HSI RX buffer. */ +#define CFHSI_BUF_SZ_RX ((2 * CFHSI_DESC_SZ) + CFHSI_MAX_PAYLOAD_SZ) + +/* Bitmasks for the HSI descriptor. */ +#define CFHSI_PIGGY_DESC (0x01 << 7) + +#define CFHSI_TX_STATE_IDLE 0 +#define CFHSI_TX_STATE_XFER 1 + +#define CFHSI_RX_STATE_DESC 0 +#define CFHSI_RX_STATE_PAYLOAD 1 + +/* Bitmasks for power management. */ +#define CFHSI_WAKE_UP 0 +#define CFHSI_WAKE_UP_ACK 1 +#define CFHSI_WAKE_DOWN_ACK 2 +#define CFHSI_AWAKE 3 +#define CFHSI_PENDING_RX 4 +#define CFHSI_SHUTDOWN 6 +#define CFHSI_FLUSH_FIFO 7 + +#ifndef CFHSI_INACTIVITY_TOUT +#define CFHSI_INACTIVITY_TOUT (1 * HZ) +#endif /* CFHSI_INACTIVITY_TOUT */ + +#ifndef CFHSI_WAKEUP_TOUT +#define CFHSI_WAKEUP_TOUT (3 * HZ) +#endif /* CFHSI_WAKEUP_TOUT */ + + +/* Structure implemented by the CAIF HSI driver. */ +struct cfhsi_drv { + void (*tx_done_cb) (struct cfhsi_drv *drv); + void (*rx_done_cb) (struct cfhsi_drv *drv); + void (*wake_up_cb) (struct cfhsi_drv *drv); + void (*wake_down_cb) (struct cfhsi_drv *drv); +}; + +/* Structure implemented by HSI device. */ +struct cfhsi_dev { + int (*cfhsi_up) (struct cfhsi_dev *dev); + int (*cfhsi_down) (struct cfhsi_dev *dev); + int (*cfhsi_tx) (u8 *ptr, int len, struct cfhsi_dev *dev); + int (*cfhsi_rx) (u8 *ptr, int len, struct cfhsi_dev *dev); + int (*cfhsi_wake_up) (struct cfhsi_dev *dev); + int (*cfhsi_wake_down) (struct cfhsi_dev *dev); + int (*cfhsi_fifo_occupancy)(struct cfhsi_dev *dev, size_t *occupancy); + int (*cfhsi_rx_cancel)(struct cfhsi_dev *dev); + struct cfhsi_drv *drv; +}; + +/* Structure implemented by CAIF HSI drivers. */ +struct cfhsi { + struct caif_dev_common cfdev; + struct net_device *ndev; + struct platform_device *pdev; + struct sk_buff_head qhead; + struct cfhsi_drv drv; + struct cfhsi_dev *dev; + int tx_state; + int rx_state; + int rx_len; + u8 *rx_ptr; + u8 *tx_buf; + u8 *rx_buf; + spinlock_t lock; + int flow_off_sent; + u32 q_low_mark; + u32 q_high_mark; + struct list_head list; + struct work_struct wake_up_work; + struct work_struct wake_down_work; + struct work_struct rx_done_work; + struct work_struct tx_done_work; + struct workqueue_struct *wq; + wait_queue_head_t wake_up_wait; + wait_queue_head_t wake_down_wait; + wait_queue_head_t flush_fifo_wait; + struct timer_list timer; + unsigned long bits; +}; + +extern struct platform_driver cfhsi_driver; + +#endif /* CAIF_HSI_H_ */ diff --git a/include/net/caif/caif_layer.h b/include/net/caif/caif_layer.h index c8b07a904e78..35bc7883cf97 100644 --- a/include/net/caif/caif_layer.h +++ b/include/net/caif/caif_layer.h @@ -15,7 +15,6 @@ struct cfpktq; struct caif_payload_info; struct caif_packet_funcs; - #define CAIF_LAYER_NAME_SZ 16 /** @@ -33,7 +32,6 @@ do { \ } \ } while (0) - /** * enum caif_ctrlcmd - CAIF Stack Control Signaling sent in layer.ctrlcmd(). * @@ -141,7 +139,7 @@ enum caif_direction { * - All layers must use this structure. If embedding it, then place this * structure first in the layer specific structure. * - * - Each layer should not depend on any others layer private data. + * - Each layer should not depend on any others layer's private data. * * - In order to send data upwards do * layer->up->receive(layer->up, packet); @@ -155,16 +153,23 @@ struct cflayer { struct list_head node; /* - * receive() - Receive Function. + * receive() - Receive Function (non-blocking). * Contract: Each layer must implement a receive function passing the * CAIF packets upwards in the stack. * Packet handling rules: - * - The CAIF packet (cfpkt) cannot be accessed after - * passing it to the next layer using up->receive(). + * - The CAIF packet (cfpkt) ownership is passed to the + * called receive function. This means that the the + * packet cannot be accessed after passing it to the + * above layer using up->receive(). + * * - If parsing of the packet fails, the packet must be - * destroyed and -1 returned from the function. + * destroyed and negative error code returned + * from the function. + * EXCEPTION: If the framing layer (cffrml) returns + * -EILSEQ, the packet is not freed. + * * - If parsing succeeds (and above layers return OK) then - * the function must return a value > 0. + * the function must return a value >= 0. * * Returns result < 0 indicates an error, 0 or positive value * indicates success. @@ -176,7 +181,7 @@ struct cflayer { int (*receive)(struct cflayer *layr, struct cfpkt *cfpkt); /* - * transmit() - Transmit Function. + * transmit() - Transmit Function (non-blocking). * Contract: Each layer must implement a transmit function passing the * CAIF packet downwards in the stack. * Packet handling rules: @@ -185,15 +190,16 @@ struct cflayer { * cannot be accessed after passing it to the below * layer using dn->transmit(). * - * - If transmit fails, however, the ownership is returned - * to thecaller. The caller of "dn->transmit()" must - * destroy or resend packet. + * - Upon error the packet ownership is still passed on, + * so the packet shall be freed where error is detected. + * Callers of the transmit function shall not free packets, + * but errors shall be returned. * * - Return value less than zero means error, zero or * greater than zero means OK. * - * result < 0 indicates an error, 0 or positive value - * indicate success. + * Returns result < 0 indicates an error, 0 or positive value + * indicates success. * * @layr: Pointer to the current layer the receive function * isimplemented for (this pointer). @@ -202,7 +208,7 @@ struct cflayer { int (*transmit) (struct cflayer *layr, struct cfpkt *cfpkt); /* - * cttrlcmd() - Control Function upwards in CAIF Stack. + * cttrlcmd() - Control Function upwards in CAIF Stack (non-blocking). * Used for signaling responses (CAIF_CTRLCMD_*_RSP) * and asynchronous events from the modem (CAIF_CTRLCMD_*_IND) * diff --git a/include/net/caif/cfcnfg.h b/include/net/caif/cfcnfg.h index f33d36341132..3e93a4a4b677 100644 --- a/include/net/caif/cfcnfg.h +++ b/include/net/caif/cfcnfg.h @@ -46,6 +46,12 @@ enum cfcnfg_phy_preference { }; /** + * 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. */ struct cfcnfg *cfcnfg_create(void); @@ -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); /** @@ -88,61 +92,12 @@ 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. + * cfcnfg_set_phy_state() - Set the state of the physical interface device. * @cnfg: Configuration object - * @phy_pref: Caif Link Layer preference + * @phy_layer: Physical Layer representation + * @up: State of device */ -struct dev_info *cfcnfg_get_phyid(struct cfcnfg *cnfg, - enum cfcnfg_phy_preference phy_pref); +int cfcnfg_set_phy_state(struct cfcnfg *cnfg, struct cflayer *phy_layer, + bool up); -/** - * 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); #endif /* CFCNFG_H_ */ diff --git a/include/net/caif/cfctrl.h b/include/net/caif/cfctrl.h index e54f6396fa4c..9e5425b4a1d7 100644 --- a/include/net/caif/cfctrl.h +++ b/include/net/caif/cfctrl.h @@ -121,19 +121,10 @@ 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); +int cfctrl_cancel_req(struct cflayer *layr, struct cflayer *adap_layer); +void cfctrl_remove(struct cflayer *layr); #endif /* CFCTRL_H_ */ diff --git a/include/net/caif/cffrml.h b/include/net/caif/cffrml.h index 3f14d2e1ce61..afac1a48cce7 100644 --- a/include/net/caif/cffrml.h +++ b/include/net/caif/cffrml.h @@ -7,10 +7,15 @@ #ifndef CFFRML_H_ #define CFFRML_H_ #include <net/caif/caif_layer.h> +#include <linux/netdevice.h> struct cffrml; -struct cflayer *cffrml_create(u16 phyid, bool DoFCS); +struct cflayer *cffrml_create(u16 phyid, bool use_fcs); +void cffrml_free(struct cflayer *layr); void cffrml_set_uplayer(struct cflayer *this, struct cflayer *up); void cffrml_set_dnlayer(struct cflayer *this, struct cflayer *dn); +void cffrml_put(struct cflayer *layr); +void cffrml_hold(struct cflayer *layr); +int cffrml_refcnt_read(struct cflayer *layr); #endif /* CFFRML_H_ */ diff --git a/include/net/caif/cfmuxl.h b/include/net/caif/cfmuxl.h index 4e1b4f33423e..5847a196b8ad 100644 --- a/include/net/caif/cfmuxl.h +++ b/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_ */ diff --git a/include/net/caif/cfpkt.h b/include/net/caif/cfpkt.h index fbc681beff52..6bd200a4754a 100644 --- a/include/net/caif/cfpkt.h +++ b/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. @@ -270,5 +195,4 @@ struct cfpkt *cfpkt_clone_release(struct cfpkt *pkt); * @return Packet information */ struct caif_payload_info *cfpkt_info(struct cfpkt *pkt); -/*! @} */ #endif /* CFPKT_H_ */ diff --git a/include/net/caif/cfsrvl.h b/include/net/caif/cfsrvl.h index b1fa87ee0992..0f5905241843 100644 --- a/include/net/caif/cfsrvl.h +++ b/include/net/caif/cfsrvl.h @@ -10,6 +10,7 @@ #include <linux/stddef.h> #include <linux/types.h> #include <linux/kref.h> +#include <linux/rculist.h> struct cfsrvl { struct cflayer layer; @@ -17,12 +18,13 @@ struct cfsrvl { bool phy_flow_on; bool modem_flow_on; bool supports_flowctrl; - void (*release)(struct kref *); + void (*release)(struct cflayer *layer); struct dev_info dev_info; - struct kref ref; + void (*hold)(struct cflayer *lyr); + void (*put)(struct cflayer *lyr); + struct rcu_head rcu; }; -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); @@ -30,8 +32,12 @@ struct cflayer *cfvidl_create(u8 linkid, struct dev_info *dev_info); 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); + +void cfsrvl_ctrlcmd(struct cflayer *layr, enum caif_ctrlcmd ctrl, + int phyid); + 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, @@ -41,23 +47,19 @@ u8 cfsrvl_getphyid(struct cflayer *layer); static inline void cfsrvl_get(struct cflayer *layr) { - struct cfsrvl *s; - if (layr == NULL) + struct cfsrvl *s = container_of(layr, struct cfsrvl, layer); + if (layr == NULL || layr->up == NULL || s->hold == NULL) return; - s = container_of(layr, struct cfsrvl, layer); - kref_get(&s->ref); + + s->hold(layr->up); } static inline void cfsrvl_put(struct cflayer *layr) { - struct cfsrvl *s; - if (layr == NULL) + struct cfsrvl *s = container_of(layr, struct cfsrvl, layer); + if (layr == NULL || layr->up == NULL || s->hold == NULL) return; - s = container_of(layr, struct cfsrvl, layer); - WARN_ON(!s->release); - if (s->release) - kref_put(&s->ref, s->release); + s->put(layr->up); } - #endif /* CFSRVL_H_ */ |