linux/drivers/scsi/bnx2fc/bnx2fc_tgt.c

/* bnx2fc_tgt.c: QLogic Linux FCoE offload driver.
 * Handles operations such as session offload/upload etc, and manages
 * session resources such as connection id and qp resources.
 *
 * Copyright (c) 2008-2013 Broadcom Corporation
 * Copyright (c) 2014-2016 QLogic Corporation
 * Copyright (c) 2016-2017 Cavium Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation.
 *
 * Written by: Bhanu Prakash Gollapudi ([email protected])
 */

#include "bnx2fc.h"
static void bnx2fc_upld_timer(struct timer_list *t);
static void bnx2fc_ofld_timer(struct timer_list *t);
static int bnx2fc_init_tgt(struct bnx2fc_rport *tgt,
			   struct fcoe_port *port,
			   struct fc_rport_priv *rdata);
static u32 bnx2fc_alloc_conn_id(struct bnx2fc_hba *hba,
				struct bnx2fc_rport *tgt);
static int bnx2fc_alloc_session_resc(struct bnx2fc_hba *hba,
			      struct bnx2fc_rport *tgt);
static void bnx2fc_free_session_resc(struct bnx2fc_hba *hba,
			      struct bnx2fc_rport *tgt);
static void bnx2fc_free_conn_id(struct bnx2fc_hba *hba, u32 conn_id);

static void bnx2fc_upld_timer(struct timer_list *t)
{ … }

static void bnx2fc_ofld_timer(struct timer_list *t)
{ … }

static void bnx2fc_ofld_wait(struct bnx2fc_rport *tgt)
{ … }

static void bnx2fc_offload_session(struct fcoe_port *port,
					struct bnx2fc_rport *tgt,
					struct fc_rport_priv *rdata)
{ … }

void bnx2fc_flush_active_ios(struct bnx2fc_rport *tgt)
{ … }

static void bnx2fc_upld_wait(struct bnx2fc_rport *tgt)
{ … }

static void bnx2fc_upload_session(struct fcoe_port *port,
					struct bnx2fc_rport *tgt)
{ … }

static int bnx2fc_init_tgt(struct bnx2fc_rport *tgt,
			   struct fcoe_port *port,
			   struct fc_rport_priv *rdata)
{ … }

/*
 * This event_callback is called after successful completion of libfc
 * initiated target login. bnx2fc can proceed with initiating the session
 * establishment.
 */
void bnx2fc_rport_event_handler(struct fc_lport *lport,
				struct fc_rport_priv *rdata,
				enum fc_rport_event event)
{ … }

/**
 * bnx2fc_tgt_lookup() - Lookup a bnx2fc_rport by port_id
 *
 * @port:  fcoe_port struct to lookup the target port on
 * @port_id: The remote port ID to look up
 */
struct bnx2fc_rport *bnx2fc_tgt_lookup(struct fcoe_port *port,
					     u32 port_id)
{ … }


/**
 * bnx2fc_alloc_conn_id - allocates FCOE Connection id
 *
 * @hba:	pointer to adapter structure
 * @tgt:	pointer to bnx2fc_rport structure
 */
static u32 bnx2fc_alloc_conn_id(struct bnx2fc_hba *hba,
				struct bnx2fc_rport *tgt)
{ … }

static void bnx2fc_free_conn_id(struct bnx2fc_hba *hba, u32 conn_id)
{ … }

/*
 * bnx2fc_alloc_session_resc - Allocate qp resources for the session
 */
static int bnx2fc_alloc_session_resc(struct bnx2fc_hba *hba,
					struct bnx2fc_rport *tgt)
{ … }

/**
 * bnx2fc_free_session_resc - free qp resources for the session
 *
 * @hba:	adapter structure pointer
 * @tgt:	bnx2fc_rport structure pointer
 *
 * Free QP resources - SQ/RQ/CQ/XFERQ memory and PBL
 */
static void bnx2fc_free_session_resc(struct bnx2fc_hba *hba,
						struct bnx2fc_rport *tgt)
{ … }