fc.h File Reference

Fibre Channel. More...

#include <stdint.h>
#include <ipxe/refcnt.h>
#include <ipxe/list.h>
#include <ipxe/tables.h>
#include <ipxe/interface.h>
#include <ipxe/retry.h>
#include <ipxe/socket.h>

Go to the source code of this file.

Data Structures
struct	fc_name
	A Fibre Channel name. More...
struct	fc_port_id
	A Fibre Channel port identifier. More...
struct	sockaddr_fc
	Fibre Channel socket address. More...
struct	fc_link_state
	A Fibre Channel link state nonitor. More...
struct	fc_frame_header
	A Fibre Channel Frame Header. More...
struct	fc_responder
	A Fibre Channel responder. More...
struct	fc_port
	A Fibre Channel port. More...
struct	fc_peer
	A Fibre Channel peer. More...
struct	fc_ulp
	A Fibre Channel upper-layer protocol. More...
struct	fc_ulp_user
	A Fibre Channel upper-layer protocol user. More...

Macros
#define	FC_NAME_STRLEN   23 /* "xx:xx:xx:xx:xx:xx:xx:xx" */
	Length of Fibre Channel name text. More...
#define	FC_PORT_ID_STRLEN   9 /* "xx.xx.xx" */
	Length of Fibre Channel port identifier next. More...
#define	FC_LINK_RETRY_DELAY   ( 2 * TICKS_PER_SEC )
	Delay between failed link-up attempts. More...
#define	FC_R_CTL_ROUTING_MASK   0xf0
	Fibre Channel Routing Control Routing mask. More...
#define	FC_R_CTL_INFO_MASK   0x07
	Fibre Channel Routing Control Information mask. More...
#define	FC_RX_ID_UNKNOWN   0xffff
	Responder exchange identifier used before first response. More...
#define	FC_RESPONDERS   __table ( struct fc_responder, "fc_responders" )
	Fibre Channel responder table. More...
#define	__fc_responder   __table_entry ( FC_RESPONDERS, 01 )
	Declare a Fibre Channel responder. More...

Enumerations
enum	fc_r_ctl_routing {   FC_R_CTL_DATA = 0x00, FC_R_CTL_ELS = 0x20, FC_R_CTL_FC4_LINK = 0x30, FC_R_CTL_VIDEO = 0x40,   FC_R_CTL_EH = 0x50, FC_R_CTL_BLS = 0x80, FC_R_CTL_LINK_CTRL = 0xc0, FC_R_CTL_EXT_ROUTE = 0xf0 }
	Fibre Channel Routing Control Routing. More...
enum	fc_r_ctl_info {   FC_R_CTL_UNCAT = 0x00, FC_R_CTL_SOL_DATA = 0x01, FC_R_CTL_UNSOL_CTRL = 0x02, FC_R_CTL_SOL_CTRL = 0x03,   FC_R_CTL_UNSOL_DATA = 0x04, FC_R_CTL_DATA_DESC = 0x05, FC_R_CTL_UNSOL_CMD = 0x06, FC_R_CTL_CMD_STAT = 0x07 }
	Fibre Channel Routing Control Information. More...
enum	fc_type { FC_TYPE_BLS = 0x00, FC_TYPE_ELS = 0x01, FC_TYPE_FCP = 0x08, FC_TYPE_CT = 0x20 }
	Fibre Channel Data Structure Type. More...
enum	fc_f_ctl_es {   FC_F_CTL_ES_RESPONDER = 0x80, FC_F_CTL_ES_RECIPIENT = 0x40, FC_F_CTL_ES_FIRST = 0x20, FC_F_CTL_ES_LAST = 0x10,   FC_F_CTL_ES_END = 0x08, FC_F_CTL_ES_TRANSFER = 0x01 }
	Fibre Channel Frame Control - Exchange and Sequence. More...
enum	fc_f_ctl_misc { FC_F_CTL_MISC_REL_OFF = 0x08 }
	Fibre Channel Frame Control - Miscellaneous. More...
enum	fc_port_flags { FC_PORT_HAS_FABRIC = 0x0001, FC_PORT_HAS_NS = 0x0002 }
	Fibre Channel port flags. More...
enum	fc_ulp_flags { FC_ULP_ORIGINATED_LOGIN_OK = 0x0001 }
	Fibre Channel upper-layer protocol flags. More...

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
const char *	fc_id_ntoa (const struct fc_port_id *id)
	Format Fibre Channel port ID. More...
int	fc_id_aton (const char *id_text, struct fc_port_id *id)
	Parse Fibre Channel port ID. More...
const char *	fc_ntoa (const struct fc_name *wwn)
	Format Fibre Channel WWN. More...
int	fc_aton (const char *wwn_text, struct fc_name *wwn)
	Parse Fibre Channel WWN. More...
struct sockaddr *	fc_fill_sockaddr (struct sockaddr_fc *sa_fc, struct fc_port_id *id)
	Fill Fibre Channel socket address. More...
static int	fc_link_ok (struct fc_link_state *link)
	Check Fibre Channel link state. More...
int	fc_xchg_originate (struct interface *parent, struct fc_port *port, struct fc_port_id *peer_port_id, unsigned int type)
	Originate a new Fibre Channel exchange. More...
static struct fc_port *	fc_port_get (struct fc_port *port)
	Get reference to Fibre Channel port. More...
static void	fc_port_put (struct fc_port *port)
	Drop reference to Fibre Channel port. More...
int	fc_port_login (struct fc_port *port, struct fc_port_id *port_id, const struct fc_name *link_node_wwn, const struct fc_name *link_port_wwn, int has_fabric)
	Log in Fibre Channel port. More...
void	fc_port_logout (struct fc_port *port, int rc)
	Log out Fibre Channel port. More...
int	fc_port_open (struct interface *transport, const struct fc_name *node_wwn, const struct fc_name *port_wwn, const char *name)
	Create Fibre Channel port. More...
struct fc_port *	fc_port_find (const char *name)
	Find Fibre Channel port by name. More...
static struct fc_peer *	fc_peer_get (struct fc_peer *peer)
	Get reference to Fibre Channel peer. More...
static void	fc_peer_put (struct fc_peer *peer)
	Drop reference to Fibre Channel peer. More...
struct fc_peer *	fc_peer_get_wwn (const struct fc_name *port_wwn)
	Get Fibre Channel peer by node name. More...
struct fc_peer *	fc_peer_get_port_id (struct fc_port *port, const struct fc_port_id *peer_port_id)
	Get Fibre Channel peer by port ID. More...
int	fc_peer_login (struct fc_peer *peer, struct fc_port *port, struct fc_port_id *port_id)
	Log in Fibre Channel peer. More...
void	fc_peer_logout (struct fc_peer *peer, int rc)
	Log out Fibre Channel peer. More...
static struct fc_ulp *	fc_ulp_get (struct fc_ulp *ulp)
	Get reference to Fibre Channel upper-layer protocol. More...
static void	fc_ulp_put (struct fc_ulp *ulp)
	Drop reference to Fibre Channel upper-layer protocol. More...
static struct fc_ulp_user *	fc_ulp_user_get (struct fc_ulp_user *user)
	Get reference to Fibre Channel upper-layer protocol user. More...
static void	fc_ulp_user_put (struct fc_ulp_user *user)
	Drop reference to Fibre Channel upper-layer protocol user. More...
static void	fc_ulp_user_init (struct fc_ulp_user *user, void(*examine)(struct fc_ulp_user *user), struct refcnt *refcnt)
	Initialise Fibre Channel upper-layer protocol user. More...
struct fc_ulp *	fc_ulp_get_wwn_type (const struct fc_name *port_wwn, unsigned int type)
	Get Fibre Channel upper-layer protocol by port name and type. More...
struct fc_ulp *	fc_ulp_get_port_id_type (struct fc_port *port, const struct fc_port_id *peer_port_id, unsigned int type)
	Get Fibre Channel upper-layer protocol by port ID and type. More...
void	fc_ulp_attach (struct fc_ulp *ulp, struct fc_ulp_user *user)
	Attach Fibre Channel upper-layer protocol user. More...
void	fc_ulp_detach (struct fc_ulp_user *user)
	Detach Fibre Channel upper-layer protocol user. More...
int	fc_ulp_login (struct fc_ulp *ulp, const void *param, size_t param_len, int originated)
	Log in Fibre Channel upper-layer protocol. More...
void	fc_ulp_logout (struct fc_ulp *ulp, int rc)
	Log out Fibre Channel upper-layer protocol. More...

Variables
struct fc_port_id	fc_empty_port_id
	Unassigned port ID. More...
struct fc_port_id	fc_f_port_id
	F_Port contoller port ID. More...
struct fc_port_id	fc_gs_port_id
	Generic services port ID. More...
struct fc_port_id	fc_ptp_low_port_id
	Point-to-point low port ID. More...
struct fc_port_id	fc_ptp_high_port_id
	Point-to-point high port ID. More...
struct list_head	fc_ports
struct list_head	fc_peers

Detailed Description

Fibre Channel.

Definition in file fc.h.

Macro Definition Documentation

FC_NAME_STRLEN

#define FC_NAME_STRLEN   23 /* "xx:xx:xx:xx:xx:xx:xx:xx" */

Length of Fibre Channel name text.

Definition at line 34 of file fc.h.

FC_PORT_ID_STRLEN

#define FC_PORT_ID_STRLEN   9 /* "xx.xx.xx" */

Length of Fibre Channel port identifier next.

Definition at line 42 of file fc.h.

FC_LINK_RETRY_DELAY

#define FC_LINK_RETRY_DELAY   ( 2 * TICKS_PER_SEC )

Delay between failed link-up attempts.

Definition at line 86 of file fc.h.

FC_R_CTL_ROUTING_MASK

#define FC_R_CTL_ROUTING_MASK   0xf0

Fibre Channel Routing Control Routing mask.

Definition at line 172 of file fc.h.

FC_R_CTL_INFO_MASK

#define FC_R_CTL_INFO_MASK   0x07

Fibre Channel Routing Control Information mask.

Definition at line 187 of file fc.h.

FC_RX_ID_UNKNOWN

#define FC_RX_ID_UNKNOWN   0xffff

Responder exchange identifier used before first response.

Definition at line 213 of file fc.h.

FC_RESPONDERS

#define FC_RESPONDERS   __table ( struct fc_responder, "fc_responders" )

Fibre Channel responder table.

Definition at line 239 of file fc.h.

__fc_responder

#define __fc_responder   __table_entry ( FC_RESPONDERS, 01 )

Declare a Fibre Channel responder.

Definition at line 242 of file fc.h.

Enumeration Type Documentation

fc_r_ctl_routing

enum fc_r_ctl_routing

Fibre Channel Routing Control Routing.

Enumerator
FC_R_CTL_DATA	Device Data.
FC_R_CTL_ELS	Extended Link Services.
FC_R_CTL_FC4_LINK	FC-4 Link Data.
FC_R_CTL_VIDEO	Video Data.
FC_R_CTL_EH	Extended Headers.
FC_R_CTL_BLS	Basic Link Services.
FC_R_CTL_LINK_CTRL	Link Control.
FC_R_CTL_EXT_ROUTE	Extended Routing.

Definition at line 160 of file fc.h.

                      {
        FC_R_CTL_DATA = 0x00,           /**< Device Data */
        FC_R_CTL_ELS = 0x20,            /**< Extended Link Services */
        FC_R_CTL_FC4_LINK = 0x30,       /**< FC-4 Link Data */
        FC_R_CTL_VIDEO = 0x40,          /**< Video Data */
        FC_R_CTL_EH = 0x50,             /**< Extended Headers */
        FC_R_CTL_BLS = 0x80,            /**< Basic Link Services */
        FC_R_CTL_LINK_CTRL = 0xc0,      /**< Link Control */
        FC_R_CTL_EXT_ROUTE = 0xf0,      /**< Extended Routing */
};

fc_r_ctl_info

enum fc_r_ctl_info

Fibre Channel Routing Control Information.

Enumerator
FC_R_CTL_UNCAT	Uncategorized.
FC_R_CTL_SOL_DATA	Solicited Data.
FC_R_CTL_UNSOL_CTRL	Unsolicited Control.
FC_R_CTL_SOL_CTRL	Solicited Control.
FC_R_CTL_UNSOL_DATA	Unsolicited Data.
FC_R_CTL_DATA_DESC	Data Descriptor.
FC_R_CTL_UNSOL_CMD	Unsolicited Command.
FC_R_CTL_CMD_STAT	Command Status.

Definition at line 175 of file fc.h.

                   {
        FC_R_CTL_UNCAT = 0x00,          /**< Uncategorized */
        FC_R_CTL_SOL_DATA = 0x01,       /**< Solicited Data */
        FC_R_CTL_UNSOL_CTRL = 0x02,     /**< Unsolicited Control */
        FC_R_CTL_SOL_CTRL = 0x03,       /**< Solicited Control */
        FC_R_CTL_UNSOL_DATA = 0x04,     /**< Unsolicited Data */
        FC_R_CTL_DATA_DESC = 0x05,      /**< Data Descriptor */
        FC_R_CTL_UNSOL_CMD = 0x06,      /**< Unsolicited Command */
        FC_R_CTL_CMD_STAT = 0x07,       /**< Command Status */
};

fc_type

enum fc_type

Fibre Channel Data Structure Type.

Enumerator
FC_TYPE_BLS	Basic Link Service.
FC_TYPE_ELS	Extended Link Service.
FC_TYPE_FCP	Fibre Channel Protocol.
FC_TYPE_CT	Common Transport.

Definition at line 190 of file fc.h.

             {
        FC_TYPE_BLS = 0x00,             /**< Basic Link Service */
        FC_TYPE_ELS = 0x01,             /**< Extended Link Service */
        FC_TYPE_FCP = 0x08,             /**< Fibre Channel Protocol */
        FC_TYPE_CT  = 0x20,             /**< Common Transport */
};

fc_f_ctl_es

enum fc_f_ctl_es

Fibre Channel Frame Control - Exchange and Sequence.

Enumerator
FC_F_CTL_ES_RESPONDER	Responder of Exchange.
FC_F_CTL_ES_RECIPIENT	Sequence Recipient.
FC_F_CTL_ES_FIRST	First Sequence of Exchange.
FC_F_CTL_ES_LAST	Last Sequence of Exchange.
FC_F_CTL_ES_END	Last Data Frame of Sequence.
FC_F_CTL_ES_TRANSFER	Transfer Sequence Initiative.

Definition at line 198 of file fc.h.

                 {
        FC_F_CTL_ES_RESPONDER = 0x80,   /**< Responder of Exchange */
        FC_F_CTL_ES_RECIPIENT = 0x40,   /**< Sequence Recipient */
        FC_F_CTL_ES_FIRST = 0x20,       /**< First Sequence of Exchange */
        FC_F_CTL_ES_LAST = 0x10,        /**< Last Sequence of Exchange */
        FC_F_CTL_ES_END = 0x08,         /**< Last Data Frame of Sequence */
        FC_F_CTL_ES_TRANSFER = 0x01,    /**< Transfer Sequence Initiative */
};

fc_f_ctl_misc

enum fc_f_ctl_misc

Fibre Channel Frame Control - Miscellaneous.

Enumerator
FC_F_CTL_MISC_REL_OFF	Relative Offset Present.

Definition at line 208 of file fc.h.

                   {
        FC_F_CTL_MISC_REL_OFF = 0x08,   /**< Relative Offset Present */
};

fc_port_flags

enum fc_port_flags

Fibre Channel port flags.

Enumerator
FC_PORT_HAS_FABRIC	Port is attached to a fabric.
FC_PORT_HAS_NS	Port is logged in to a name server.

Definition at line 290 of file fc.h.

                   {
        /** Port is attached to a fabric */
        FC_PORT_HAS_FABRIC = 0x0001,
        /** Port is logged in to a name server */
        FC_PORT_HAS_NS = 0x0002,
};

fc_ulp_flags

enum fc_ulp_flags

Fibre Channel upper-layer protocol flags.

Enumerator
FC_ULP_ORIGINATED_LOGIN_OK	A login originated by us has succeeded.

Definition at line 447 of file fc.h.

                  {
        /** A login originated by us has succeeded */
        FC_ULP_ORIGINATED_LOGIN_OK = 0x0001,
};

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

fc_id_ntoa()

const char* fc_id_ntoa

(

const struct fc_port_id *

id

)

Format Fibre Channel port ID.

Parameters

id	Fibre Channel port ID

Return values

id_text

Port ID text

Definition at line 92 of file fc.c.

                                                        {
        static char id_text[ FC_PORT_ID_STRLEN + 1 /* NUL */ ];

        snprintf ( id_text, sizeof ( id_text ), "%02x.%02x.%02x",
                   id->bytes[0], id->bytes[1], id->bytes[2] );
        return id_text;
}

References FC_PORT_ID_STRLEN, id, and snprintf().

Referenced by fc_els_flogi_rx(), fc_els_logo_rx_request(), fc_els_plogi_rx(), fc_ns_query_deliver(), fc_peer_login(), fc_port_deliver(), fc_port_login(), fc_xchg_originate(), fc_xchg_respond(), fcels(), fcpeerstat(), and fcportstat().

fc_id_aton()

int fc_id_aton	(	const char *	id_text,
		struct fc_port_id *	id
	)

Parse Fibre Channel port ID.

Parameters

id_text

Port ID text

Return values

id	Fibre Channel port ID
rc	Return status code

Definition at line 107 of file fc.c.

                                                              {
        char *ptr = ( ( char * ) id_text );
        unsigned int i = 0;

        while ( 1 ) {
                id->bytes[i++] = strtoul ( ptr, &ptr, 16 );
                if ( i == sizeof ( id->bytes ) )
                        return ( ( *ptr == '\0' ) ? 0 : -EINVAL );
                if ( *ptr != '.' )
                        return -EINVAL;
                ptr++;
        }
}

References EINVAL, id, and strtoul().

Referenced by parse_fc_port_id().

fc_ntoa()

const char* fc_ntoa

(

const struct fc_name *

wwn

)

Format Fibre Channel WWN.

Parameters

wwn	Fibre Channel WWN

Return values

wwn_text

WWN text

Definition at line 127 of file fc.c.

                                                   {
        static char wwn_text[ FC_NAME_STRLEN + 1 /* NUL */ ];

        snprintf ( wwn_text, sizeof ( wwn_text ),
                   "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
                   wwn->bytes[0], wwn->bytes[1], wwn->bytes[2], wwn->bytes[3],
                   wwn->bytes[4], wwn->bytes[5], wwn->bytes[6], wwn->bytes[7] );
        return wwn_text;
}

References FC_NAME_STRLEN, snprintf(), and wwn.

Referenced by fc_els_flogi_rx(), fc_els_logo_rx_request(), fc_els_plogi_rx(), fc_ns_query(), fc_ns_query_deliver(), fc_peer_close(), fc_peer_create(), fc_peer_examine(), fc_peer_login(), fc_peer_logout(), fc_peer_plogi(), fc_port_login(), fc_port_open(), fc_ulp_close(), fc_ulp_create(), fc_ulp_examine(), fc_ulp_login(), fc_ulp_logout(), fcoe_probe(), fcpdev_open(), fcpeerstat(), and fcportstat().

fc_aton()

int fc_aton	(	const char *	wwn_text,
		struct fc_name *	wwn
	)

Parse Fibre Channel WWN.

Parameters

wwn_text

WWN text

Return values

wwn	Fibre Channel WWN
rc	Return status code

Definition at line 144 of file fc.c.

                                                          {
        char *ptr = ( ( char * ) wwn_text );
        unsigned int i = 0;

        while ( 1 ) {
                wwn->bytes[i++] = strtoul ( ptr, &ptr, 16 );
                if ( i == sizeof ( wwn->bytes ) )
                        return ( ( *ptr == '\0' ) ? 0 : -EINVAL );
                if ( *ptr != ':' )
                        return -EINVAL;
                ptr++;
        }
}

References EINVAL, strtoul(), and wwn.

Referenced by fcp_parse_uri().

fc_fill_sockaddr()

struct sockaddr* fc_fill_sockaddr	(	struct sockaddr_fc *	sa_fc,
		struct fc_port_id *	id
	)

Fill Fibre Channel socket address.

Parameters

sa_fc	Fibre Channel socket address to fill in
id	Fibre Channel port ID

Return values

sa	Socket address

Definition at line 165 of file fc.c.

                                                             {
        union {
                struct sockaddr sa;
                struct sockaddr_fc fc;
        } *u = container_of ( sa_fc, typeof ( *u ), fc );

        memset ( sa_fc, 0, sizeof ( *sa_fc ) );
        sa_fc->sfc_family = AF_FC;
        memcpy ( &sa_fc->sfc_port_id, id, sizeof ( sa_fc->sfc_port_id ) );
        return &u->sa;
}

References AF_FC, container_of, fc, memcpy(), memset(), sa, sockaddr_fc::sfc_family, sockaddr_fc::sfc_port_id, typeof(), and u.

Referenced by fc_els_tx(), and fc_xchg_rx().

fc_link_ok()

static int fc_link_ok ( struct fc_link_state *  link )

inlinestatic

Check Fibre Channel link state.

Parameters

link	Fibre Channel link state monitor

Return values

link_up

Link is up

Definition at line 108 of file fc.h.

                                          {
        return ( link->rc == 0 );
}

References link.

Referenced by fc_els_plogi_rx(), fc_els_prli_rx(), fc_els_prli_tx(), fc_peer_examine(), fc_peer_login(), fc_peer_logout(), fc_port_close(), fc_port_examine(), fc_port_login(), fc_port_window_changed(), fc_ulp_examine(), fc_ulp_login(), fc_ulp_logout(), fcels_exec(), fcpdev_examine(), fcpdev_identify_device(), fcpdev_window(), fcpeerstat(), and fcportstat().

fc_xchg_originate()

int fc_xchg_originate	(	struct interface *	parent,
		struct fc_port *	port,
		struct fc_port_id *	peer_port_id,
		unsigned int	type
	)

Originate a new Fibre Channel exchange.

Parameters

parent	Interface to which to attach
port	Fibre Channel port
peer_port_id	Peer port ID

Return values

xchg_id

Exchange ID, or negative error

Definition at line 728 of file fc.c.

                                                                             {
        struct fc_exchange *xchg;

        /* Allocate and initialise structure */
        xchg = fc_xchg_create ( port, peer_port_id, type );
        if ( ! xchg )
                return -ENOMEM;
        xchg->flags = ( FC_XCHG_ORIGINATOR | FC_XCHG_SEQ_INITIATIVE |
                        FC_XCHG_SEQ_FIRST );

        DBGC2 ( port, "FCXCHG %s/%04x originating to %s (type %02x)\n",
                port->name, xchg->xchg_id, fc_id_ntoa ( &xchg->peer_port_id ),
                xchg->type );

        /* Attach to parent interface and return */
        intf_plug_plug ( &xchg->ulp, parent );
        return xchg->xchg_id;
}

References DBGC2, ENOMEM, fc_id_ntoa(), fc_xchg_create(), FC_XCHG_ORIGINATOR, FC_XCHG_SEQ_FIRST, FC_XCHG_SEQ_INITIATIVE, fc_exchange::flags, intf_plug_plug(), fc_exchange::peer_port_id, port, type, fc_exchange::type, fc_exchange::ulp, and fc_exchange::xchg_id.

Referenced by fc_els_step(), fc_ns_query_step(), and fcpdev_scsi_command().

fc_port_get()

static struct fc_port* fc_port_get ( struct fc_port *  port )

inlinestatic

Get reference to Fibre Channel port.

Parameters

port	Fibre Channel port

Return values

port	Fibre Channel port

Definition at line 304 of file fc.h.

                                     {
        ref_get ( &port->refcnt );
        return port;
}

References port, and ref_get.

Referenced by fc_els_create(), fc_ns_query(), fc_peer_login(), and fc_xchg_create().

fc_port_put()

static void fc_port_put ( struct fc_port *  port )

inlinestatic

Drop reference to Fibre Channel port.

Parameters

port	Fibre Channel port

Definition at line 315 of file fc.h.

                                     {
        ref_put ( &port->refcnt );
}

References port, and ref_put.

Referenced by fc_els_free(), fc_ns_query_free(), fc_peer_logout(), and fc_xchg_free().

fc_port_login()

int fc_port_login	(	struct fc_port *	port,
		struct fc_port_id *	port_id,
		const struct fc_name *	link_node_wwn,
		const struct fc_name *	link_port_wwn,
		int	has_fabric
	)

Log in Fibre Channel port.

Parameters

port	Fibre Channel port
port_id	Local port ID
link_node_wwn	Link node name
link_port_wwn	Link port name
has_fabric	Link is to a fabric

Return values

rc	Return status code

Definition at line 941 of file fc.c.

                                                                          {
        struct fc_peer *peer;
        struct fc_peer *tmp;
        int rc;

        /* Perform implicit logout if logged in and details differ */
        if ( fc_link_ok ( &port->link ) &&
             ( ( ( !! ( port->flags & FC_PORT_HAS_FABRIC ) ) !=
                 ( !! has_fabric ) ) ||
               ( memcmp ( &port->link_node_wwn, link_node_wwn,
                          sizeof ( port->link_node_wwn ) ) != 0 ) ||
               ( memcmp ( &port->link_port_wwn, link_port_wwn,
                          sizeof ( port->link_port_wwn ) ) != 0 ) ||
               ( has_fabric &&
                 ( memcmp ( &port->port_id, port_id,
                            sizeof ( port->port_id ) ) != 0 ) ) ) ) {
                fc_port_logout ( port, 0 );
        }

        /* Log in, if applicable */
        if ( ! fc_link_ok ( &port->link ) ) {

                /* Record link port name */
                memcpy ( &port->link_node_wwn, link_node_wwn,
                         sizeof ( port->link_node_wwn ) );
                memcpy ( &port->link_port_wwn, link_port_wwn,
                         sizeof ( port->link_port_wwn ) );
                DBGC ( port, "FCPORT %s logged in to %s",
                       port->name, fc_ntoa ( &port->link_node_wwn ) );
                DBGC ( port, " port %s\n", fc_ntoa ( &port->link_port_wwn ) );

                /* Calculate local (and possibly remote) port IDs */
                if ( has_fabric ) {
                        port->flags |= FC_PORT_HAS_FABRIC;
                        memcpy ( &port->port_id, port_id,
                                 sizeof ( port->port_id ) );
                } else {
                        port->flags &= ~FC_PORT_HAS_FABRIC;
                        if ( memcmp ( &port->port_wwn, link_port_wwn,
                                      sizeof ( port->port_wwn ) ) > 0 ) {
                                memcpy ( &port->port_id, &fc_ptp_high_port_id,
                                         sizeof ( port->port_id ) );
                                memcpy ( &port->ptp_link_port_id,
                                         &fc_ptp_low_port_id,
                                         sizeof ( port->ptp_link_port_id ) );
                        } else {
                                memcpy ( &port->port_id, &fc_ptp_low_port_id,
                                         sizeof ( port->port_id ) );
                                memcpy ( &port->ptp_link_port_id,
                                         &fc_ptp_high_port_id,
                                         sizeof ( port->ptp_link_port_id ) );
                        }
                }
                DBGC ( port, "FCPORT %s logged in via a %s, with local ID "
                       "%s\n", port->name,
                       ( ( port->flags & FC_PORT_HAS_FABRIC ) ?
                         "fabric" : "point-to-point link" ),
                       fc_id_ntoa ( &port->port_id ) );
        }

        /* Log in to name server, if attached to a fabric */
        if ( has_fabric && ! ( port->flags & FC_PORT_HAS_NS ) ) {

                DBGC ( port, "FCPORT %s attempting login to name server\n",
                       port->name );

                intf_restart ( &port->ns_plogi, -ECANCELED );
                if ( ( rc = fc_els_plogi ( &port->ns_plogi, port,
                                           &fc_gs_port_id ) ) != 0 ) {
                        DBGC ( port, "FCPORT %s could not initiate name "
                               "server PLOGI: %s\n",
                               port->name, strerror ( rc ) );
                        fc_port_logout ( port, rc );
                        return rc;
                }
        }

        /* Record login */
        fc_link_up ( &port->link );

        /* Notify peers of link state change */
        list_for_each_entry_safe ( peer, tmp, &fc_peers, list ) {
                fc_peer_get ( peer );
                fc_link_examine ( &peer->link );
                fc_peer_put ( peer );
        }

        return 0;
}

References DBGC, ECANCELED, fc_els_plogi(), fc_gs_port_id, fc_id_ntoa(), fc_link_examine(), fc_link_ok(), fc_link_up(), fc_ntoa(), fc_peer_get(), fc_peer_put(), fc_peers, FC_PORT_HAS_FABRIC, FC_PORT_HAS_NS, fc_port_logout(), fc_ptp_high_port_id, fc_ptp_low_port_id, intf_restart(), fc_peer::list, list_for_each_entry_safe, memcmp(), memcpy(), peer, port, fc_peer::port_id, rc, strerror(), and tmp.

Referenced by fc_els_flogi_rx().

fc_port_logout()

void fc_port_logout	(	struct fc_port *	port,
		int	rc
	)

Log out Fibre Channel port.

Parameters

port	Fibre Channel port
rc	Reason for logout

Definition at line 1039 of file fc.c.

                                                     {
        struct fc_peer *peer;
        struct fc_peer *tmp;

        DBGC ( port, "FCPORT %s logged out: %s\n",
               port->name, strerror ( rc ) );

        /* Erase port details */
        memset ( &port->port_id, 0, sizeof ( port->port_id ) );
        port->flags = 0;

        /* Record logout */
        fc_link_err ( &port->link, rc );

        /* Notify peers of link state change */
        list_for_each_entry_safe ( peer, tmp, &fc_peers, list ) {
                fc_peer_get ( peer );
                fc_link_examine ( &peer->link );
                fc_peer_put ( peer );
        }
}

References DBGC, fc_link_err(), fc_link_examine(), fc_peer_get(), fc_peer_put(), fc_peers, fc_peer::list, list_for_each_entry_safe, memset(), peer, port, rc, strerror(), and tmp.

Referenced by fc_els_logo_logout(), fc_port_close(), fc_port_examine(), fc_port_flogi_done(), fc_port_login(), and fc_port_window_changed().

fc_port_open()

int fc_port_open	(	struct interface *	transport,
		const struct fc_name *	node_wwn,
		const struct fc_name *	port_wwn,
		const char *	name
	)

Create Fibre Channel port.

Parameters

transport	Transport interface
node	Fibre Channel node name
port	Fibre Channel port name
name	Symbolic port name

Return values

rc	Return status code

Definition at line 1189 of file fc.c.

                                                                      {
        struct fc_port *port;

        /* Allocate and initialise structure */
        port = zalloc ( sizeof ( *port ) );
        if ( ! port )
                return -ENOMEM;
        ref_init ( &port->refcnt, NULL );
        intf_init ( &port->transport, &fc_port_transport_desc, &port->refcnt );
        fc_link_init ( &port->link, fc_port_examine, &port->refcnt );
        intf_init ( &port->flogi, &fc_port_flogi_desc, &port->refcnt );
        intf_init ( &port->ns_plogi, &fc_port_ns_plogi_desc, &port->refcnt );
        list_add_tail ( &port->list, &fc_ports );
        INIT_LIST_HEAD ( &port->xchgs );
        memcpy ( &port->node_wwn, node_wwn, sizeof ( port->node_wwn ) );
        memcpy ( &port->port_wwn, port_wwn, sizeof ( port->port_wwn ) );
        snprintf ( port->name, sizeof ( port->name ), "%s", name );

        DBGC ( port, "FCPORT %s opened as %s",
               port->name, fc_ntoa ( &port->node_wwn ) );
        DBGC ( port, " port %s\n", fc_ntoa ( &port->port_wwn ) );

        /* Attach to transport layer, mortalise self, and return */
        intf_plug_plug ( &port->transport, transport );
        ref_put ( &port->refcnt );
        return 0;
}

References DBGC, ENOMEM, fc_link_init(), fc_ntoa(), fc_port_examine(), fc_port_flogi_desc, fc_port_ns_plogi_desc, fc_port_transport_desc, fc_ports, INIT_LIST_HEAD, intf_init(), intf_plug_plug(), list_add_tail, memcpy(), name, fc_port::node_wwn, NULL, port, fc_port::port_wwn, ref_init, ref_put, snprintf(), fc_port::transport, and zalloc().

Referenced by fcoe_expired().

fc_port_find()

struct fc_port* fc_port_find

(

const char *

name

)

Find Fibre Channel port by name.

Parameters

name	Fibre Channel port name

Return values

port	Fibre Channel port, or NULL

Definition at line 1224 of file fc.c.

                                                   {
        struct fc_port *port;

        list_for_each_entry ( port, &fc_ports, list ) {
                if ( strcmp ( name, port->name ) == 0 )
                        return port;
        }
        return NULL;
}

References fc_ports, fc_port::list, list_for_each_entry, name, NULL, port, and strcmp().

Referenced by parse_fc_port().

fc_peer_get()

static struct fc_peer* fc_peer_get ( struct fc_peer *  peer )

inlinestatic

Get reference to Fibre Channel peer.

Parameters

peer	Fibre Channel peer

Return values

peer	Fibre Channel peer

Definition at line 379 of file fc.h.

                                     {
        ref_get ( &peer->refcnt );
        return peer;
}

References peer, and ref_get.

Referenced by fc_ns_query(), fc_peer_get_port_id(), fc_peer_get_wwn(), fc_peer_login(), fc_port_login(), fc_port_logout(), and fc_ulp_create().

fc_peer_put()

static void fc_peer_put ( struct fc_peer *  peer )

inlinestatic

Drop reference to Fibre Channel peer.

Parameters

peer	Fibre Channel peer

Definition at line 390 of file fc.h.

                                     {
        ref_put ( &peer->refcnt );
}

References peer, and ref_put.

Referenced by fc_els_logo_logout(), fc_els_plogi_rx(), fc_ns_query_free(), fc_peer_logout(), fc_port_login(), fc_port_logout(), fc_ulp_free(), fc_ulp_get_port_id_type(), and fc_ulp_get_wwn_type().

fc_peer_get_wwn()

struct fc_peer* fc_peer_get_wwn

(

const struct fc_name *

port_wwn

)

Get Fibre Channel peer by node name.

Parameters

port_wwn

Node name

Return values

peer	Fibre Channel peer, or NULL

Definition at line 1516 of file fc.c.

                                                                    {
        struct fc_peer *peer;

        /* Look for an existing peer */
        list_for_each_entry ( peer, &fc_peers, list ) {
                if ( memcmp ( &peer->port_wwn, port_wwn,
                              sizeof ( peer->port_wwn ) ) == 0 )
                        return fc_peer_get ( peer );
        }

        /* Create a new peer */
        peer = fc_peer_create ( port_wwn );
        if ( ! peer )
                return NULL;

        return peer;
}

References fc_peer_create(), fc_peer_get(), fc_peers, fc_peer::list, list_for_each_entry, memcmp(), NULL, peer, and fc_peer::port_wwn.

Referenced by fc_els_plogi_rx(), and fc_ulp_get_wwn_type().

fc_peer_get_port_id()

struct fc_peer* fc_peer_get_port_id	(	struct fc_port *	port,
		const struct fc_port_id *	peer_port_id
	)

Get Fibre Channel peer by port ID.

Parameters

port	Fibre Channel port
peer_port_id	Peer port ID

Return values

peer	Fibre Channel peer, or NULL

Definition at line 1541 of file fc.c.

                                                                              {
        struct fc_peer *peer;

        /* Look for an existing peer */
        list_for_each_entry ( peer, &fc_peers, list ) {
                if ( ( peer->port == port ) &&
                     ( memcmp ( &peer->port_id, peer_port_id,
                                sizeof ( peer->port_id ) ) == 0 ) )
                        return fc_peer_get ( peer );
        }

        /* Cannot create a new peer, since we have no port name to use */
        return NULL;
}

References fc_peer_get(), fc_peers, fc_peer::list, list_for_each_entry, memcmp(), NULL, peer, and port.

Referenced by fc_els_logo_logout(), and fc_ulp_get_port_id_type().

fc_peer_login()

int fc_peer_login	(	struct fc_peer *	peer,
		struct fc_port *	port,
		struct fc_port_id *	port_id
	)

Log in Fibre Channel peer.

Parameters

peer	Fibre Channel peer
port	Fibre Channel port
port_id	Port ID

Return values

rc	Return status code

Definition at line 1300 of file fc.c.

                                                 {
        struct fc_ulp *ulp;
        struct fc_ulp *tmp;

        /* Perform implicit logout if logged in and details differ */
        if ( fc_link_ok ( &peer->link ) &&
             ( ( peer->port != port ) ||
               ( memcmp ( &peer->port_id, port_id,
                          sizeof ( peer->port_id ) ) !=0 ) ) ) {
                fc_peer_logout ( peer, 0 );
        }

        /* Log in, if applicable */
        if ( ! fc_link_ok ( &peer->link ) ) {

                /* Record peer details */
                assert ( peer->port == NULL );
                peer->port = fc_port_get ( port );
                memcpy ( &peer->port_id, port_id, sizeof ( peer->port_id ) );
                DBGC ( peer, "FCPEER %s logged in via %s as %s\n",
                       fc_ntoa ( &peer->port_wwn ), peer->port->name,
                       fc_id_ntoa ( &peer->port_id ) );

                /* Add login reference */
                fc_peer_get ( peer );
        }

        /* Record login */
        fc_link_up ( &peer->link );

        /* Notify ULPs of link state change */
        list_for_each_entry_safe ( ulp, tmp, &peer->ulps, list ) {
                fc_ulp_get ( ulp );
                fc_link_examine ( &ulp->link );
                fc_ulp_put ( ulp );
        }

        return 0;
}

References assert(), DBGC, fc_id_ntoa(), fc_link_examine(), fc_link_ok(), fc_link_up(), fc_ntoa(), fc_peer_get(), fc_peer_logout(), fc_port_get(), fc_ulp_get(), fc_ulp_put(), fc_ulp::link, fc_ulp::list, list_for_each_entry_safe, memcmp(), memcpy(), NULL, peer, port, and tmp.

Referenced by fc_els_plogi_rx().

fc_peer_logout()

void fc_peer_logout	(	struct fc_peer *	peer,
		int	rc
	)

Log out Fibre Channel peer.

Parameters

peer	Fibre Channel peer
rc	Reason for logout

Definition at line 1347 of file fc.c.

                                                     {
        struct fc_ulp *ulp;
        struct fc_ulp *tmp;

        DBGC ( peer, "FCPEER %s logged out: %s\n",
               fc_ntoa ( &peer->port_wwn ), strerror ( rc ) );

        /* Drop login reference, if applicable */
        if ( fc_link_ok ( &peer->link ) )
                fc_peer_put ( peer );

        /* Erase peer details */
        fc_port_put ( peer->port );
        peer->port = NULL;

        /* Record logout */
        fc_link_err ( &peer->link, rc );

        /* Notify ULPs of link state change */
        list_for_each_entry_safe ( ulp, tmp, &peer->ulps, list ) {
                fc_ulp_get ( ulp );
                fc_link_examine ( &ulp->link );
                fc_ulp_put ( ulp );
        }

        /* Close peer if there are no active users */
        if ( peer->usage == 0 )
                fc_peer_close ( peer, rc );
}

References DBGC, fc_link_err(), fc_link_examine(), fc_link_ok(), fc_ntoa(), fc_peer_close(), fc_peer_put(), fc_port_put(), fc_ulp_get(), fc_ulp_put(), fc_ulp::link, fc_ulp::list, list_for_each_entry_safe, NULL, peer, rc, strerror(), and tmp.

Referenced by fc_els_logo_logout(), fc_peer_decrement(), fc_peer_examine(), fc_peer_login(), fc_peer_plogi(), and fc_peer_plogi_done().

fc_ulp_get()

static struct fc_ulp* fc_ulp_get ( struct fc_ulp *  ulp )

inlinestatic

Get reference to Fibre Channel upper-layer protocol.

Parameters

ulp	Fibre Channel upper-layer protocol

Return values

ulp	Fibre Channel upper-layer protocol

Definition at line 474 of file fc.h.

                                  {
        ref_get ( &ulp->refcnt );
        return ulp;
}

References ref_get, and fc_ulp::refcnt.

Referenced by fc_peer_login(), fc_peer_logout(), fc_ulp_attach(), fc_ulp_get_type(), and fc_ulp_login().

fc_ulp_put()

static void fc_ulp_put ( struct fc_ulp *  ulp )

inlinestatic

Drop reference to Fibre Channel upper-layer protocol.

Parameters

ulp	Fibre Channel upper-layer protocol

Definition at line 485 of file fc.h.

                                  {
        ref_put ( &ulp->refcnt );
}

References ref_put, and fc_ulp::refcnt.

Referenced by fc_els_prli_rx(), fc_els_prli_tx(), fc_peer_login(), fc_peer_logout(), fc_ulp_detach(), fc_ulp_get_port_id_type(), fc_ulp_get_wwn_type(), fc_ulp_logout(), and fcpdev_open().

fc_ulp_user_get()

static struct fc_ulp_user* fc_ulp_user_get ( struct fc_ulp_user *  user )

inlinestatic

Get reference to Fibre Channel upper-layer protocol user.

Parameters

user	Fibre Channel upper-layer protocol user

Return values

user	Fibre Channel upper-layer protocol user

Definition at line 496 of file fc.h.

                                             {
        ref_get ( user->refcnt );
        return user;
}

References ref_get, and user.

Referenced by fc_ulp_login(), and fc_ulp_logout().

fc_ulp_user_put()

static void fc_ulp_user_put ( struct fc_ulp_user *  user )

inlinestatic

Drop reference to Fibre Channel upper-layer protocol user.

Parameters

user	Fibre Channel upper-layer protocol user

Definition at line 507 of file fc.h.

                                             {
        ref_put ( user->refcnt );
}

References ref_put, and user.

Referenced by fc_ulp_login(), and fc_ulp_logout().

fc_ulp_user_init()

static void fc_ulp_user_init ( struct fc_ulp_user *  user, void(*)(struct fc_ulp_user *user)  examine, struct refcnt *  refcnt  )

inlinestatic

Initialise Fibre Channel upper-layer protocol user.

Parameters

user	Fibre Channel upper-layer protocol user
examine	Examine link state method
refcnt	Containing object reference count, or NULL

Definition at line 519 of file fc.h.

                                           {
        user->examine = examine;
        user->refcnt = refcnt;
}

References fc_ulp_user::examine, refcnt, and user.

Referenced by fcpdev_open().

fc_ulp_get_wwn_type()

struct fc_ulp* fc_ulp_get_wwn_type	(	const struct fc_name *	port_wwn,
		unsigned int	type
	)

Get Fibre Channel upper-layer protocol by port name and type.

Parameters

port_wwn	Port name
type	Type

Return values

ulp	Fibre Channel upper-layer protocol, or NULL

Definition at line 1880 of file fc.c.

                                                          {
        struct fc_ulp *ulp;
        struct fc_peer *peer;

        /* Get peer */
        peer = fc_peer_get_wwn ( port_wwn );
        if ( ! peer )
                goto err_peer_get_wwn;

        /* Get ULP */
        ulp = fc_ulp_get_type ( peer, type );
        if ( ! ulp )
                goto err_ulp_get_type;

        /* Drop temporary reference to peer */
        fc_peer_put ( peer );

        return ulp;

        fc_ulp_put ( ulp );
 err_ulp_get_type:
        fc_peer_put ( peer );
 err_peer_get_wwn:
        return NULL;
}

References fc_peer_get_wwn(), fc_peer_put(), fc_ulp_get_type(), fc_ulp_put(), NULL, peer, fc_peer::port_wwn, and type.

Referenced by fcpdev_open().

fc_ulp_get_port_id_type()

struct fc_ulp* fc_ulp_get_port_id_type	(	struct fc_port *	port,
		const struct fc_port_id *	peer_port_id,
		unsigned int	type
	)

Get Fibre Channel upper-layer protocol by port ID and type.

Parameters

port	Fibre Channel port
peer_port_id	Peer port ID
type	Type

Return values

ulp	Fibre Channel upper-layer protocol, or NULL

Definition at line 1915 of file fc.c.

                                                              {
        struct fc_ulp *ulp;
        struct fc_peer *peer;

        /* Get peer */
        peer = fc_peer_get_port_id ( port, peer_port_id );
        if ( ! peer )
                goto err_peer_get_wwn;

        /* Get ULP */
        ulp = fc_ulp_get_type ( peer, type );
        if ( ! ulp )
                goto err_ulp_get_type;

        /* Drop temporary reference to peer */
        fc_peer_put ( peer );

        return ulp;

        fc_ulp_put ( ulp );
 err_ulp_get_type:
        fc_peer_put ( peer );
 err_peer_get_wwn:
        return NULL;
}

References fc_peer_get_port_id(), fc_peer_put(), fc_ulp_get_type(), fc_ulp_put(), NULL, peer, port, and type.

Referenced by fc_els_prli_rx(), and fc_els_prli_tx().

fc_ulp_attach()

void fc_ulp_attach	(	struct fc_ulp *	ulp,
		struct fc_ulp_user *	user
	)

Attach Fibre Channel upper-layer protocol user.

Parameters

ulp	Fibre Channel upper-layer protocol
user	Fibre Channel upper-layer protocol user

Definition at line 1607 of file fc.c.

                                                                    {

        /* Sanity check */
        assert ( user->ulp == NULL );

        /* Increment peer's usage count */
        fc_peer_increment ( ulp->peer );

        /* Attach user */
        user->ulp = fc_ulp_get ( ulp );
        list_add ( &user->list, &ulp->users );
}

References assert(), fc_peer_increment(), fc_ulp_get(), list_add, NULL, fc_ulp::peer, user, and fc_ulp::users.

Referenced by fcpdev_open().

fc_ulp_detach()

void fc_ulp_detach

(

struct fc_ulp_user *

user

)

Detach Fibre Channel upper-layer protocol user.

Parameters

user	Fibre Channel upper-layer protocol user

Definition at line 1625 of file fc.c.

                                                {
        struct fc_ulp *ulp = user->ulp;

        /* Do nothing if not attached */
        if ( ! ulp )
                return;

        /* Sanity checks */
        list_check_contains_entry ( user, &ulp->users, list );

        /* Detach user and log out if no users remain */
        list_del ( &user->list );
        if ( list_empty ( &ulp->users ) )
                fc_ulp_logout ( ulp, 0 );

        /* Decrement our peer's usage count */
        fc_peer_decrement ( ulp->peer );

        /* Drop reference */
        user->ulp = NULL;
        fc_ulp_put ( ulp );
}

References fc_peer_decrement(), fc_ulp_logout(), fc_ulp_put(), fc_ulp::list, list_check_contains_entry, list_del, list_empty, NULL, fc_ulp::peer, user, and fc_ulp::users.

Referenced by fcpdev_close().

fc_ulp_login()

int fc_ulp_login	(	struct fc_ulp *	ulp,
		const void *	param,
		size_t	param_len,
		int	originated
	)

Log in Fibre Channel upper-layer protocol.

Parameters

ulp	Fibre Channel upper-layer protocol
param	Service parameters
param_len	Length of service parameters
originated	Login was originated by us

Return values

rc	Return status code

Definition at line 1657 of file fc.c.

                                    {
        struct fc_ulp_user *user;
        struct fc_ulp_user *tmp;

        /* Perform implicit logout if logged in and service parameters differ */
        if ( fc_link_ok ( &ulp->link ) &&
             ( ( ulp->param_len != param_len ) ||
               ( memcmp ( ulp->param, param, ulp->param_len ) != 0 ) ) ) {
                fc_ulp_logout ( ulp, 0 );
        }

        /* Work around a bug in some versions of the Linux Fibre
         * Channel stack, which fail to fully initialise image pairs
         * established via a PRLI originated by the Linux stack
         * itself.
         */
        if ( originated )
                ulp->flags |= FC_ULP_ORIGINATED_LOGIN_OK;
        if ( ! ( ulp->flags & FC_ULP_ORIGINATED_LOGIN_OK ) ) {
                DBGC ( ulp, "FCULP %s/%02x sending extra PRLI to work around "
                       "Linux bug\n",
                       fc_ntoa ( &ulp->peer->port_wwn ), ulp->type );
                fc_link_stop ( &ulp->link );
                fc_link_start ( &ulp->link );
                return 0;
        }

        /* Log in, if applicable */
        if ( ! fc_link_ok ( &ulp->link ) ) {

                /* Record service parameters */
                assert ( ulp->param == NULL );
                assert ( ulp->param_len == 0 );
                ulp->param = malloc ( param_len );
                if ( ! ulp->param ) {
                        DBGC ( ulp, "FCULP %s/%02x could not record "
                               "parameters\n",
                               fc_ntoa ( &ulp->peer->port_wwn ), ulp->type );
                        return -ENOMEM;
                }
                memcpy ( ulp->param, param, param_len );
                ulp->param_len = param_len;
                DBGC ( ulp, "FCULP %s/%02x logged in with parameters:\n",
                       fc_ntoa ( &ulp->peer->port_wwn ), ulp->type );
                DBGC_HDA ( ulp, 0, ulp->param, ulp->param_len );

                /* Add login reference */
                fc_ulp_get ( ulp );
        }

        /* Record login */
        fc_link_up ( &ulp->link );

        /* Notify users of link state change */
        list_for_each_entry_safe ( user, tmp, &ulp->users, list ) {
                fc_ulp_user_get ( user );
                user->examine ( user );
                fc_ulp_user_put ( user );
        }

        return 0;
}

References assert(), DBGC, DBGC_HDA, ENOMEM, fc_link_ok(), fc_link_start(), fc_link_stop(), fc_link_up(), fc_ntoa(), fc_ulp_get(), fc_ulp_logout(), FC_ULP_ORIGINATED_LOGIN_OK, fc_ulp_user_get(), fc_ulp_user_put(), fc_ulp::flags, fc_ulp::link, fc_ulp_user::list, list_for_each_entry_safe, malloc(), memcmp(), memcpy(), NULL, param, fc_ulp::param, fc_ulp::param_len, fc_ulp::peer, fc_peer::port_wwn, tmp, fc_ulp::type, fc_ulp_user::ulp, user, and fc_ulp::users.

Referenced by fc_els_prli_rx().

fc_ulp_logout()

void fc_ulp_logout	(	struct fc_ulp *	ulp,
		int	rc
	)

Log out Fibre Channel upper-layer protocol.

Parameters

ulp	Fibre Channel upper-layer protocol
rc	Reason for logout

Definition at line 1727 of file fc.c.

                                                  {
        struct fc_ulp_user *user;
        struct fc_ulp_user *tmp;

        DBGC ( ulp, "FCULP %s/%02x logged out: %s\n",
               fc_ntoa ( &ulp->peer->port_wwn ), ulp->type, strerror ( rc ) );

        /* Drop login reference, if applicable */
        if ( fc_link_ok ( &ulp->link ) )
                fc_ulp_put ( ulp );

        /* Discard service parameters */
        free ( ulp->param );
        ulp->param = NULL;
        ulp->param_len = 0;
        ulp->flags = 0;

        /* Record logout */
        fc_link_err ( &ulp->link, rc );

        /* Notify users of link state change */
        list_for_each_entry_safe ( user, tmp, &ulp->users, list ) {
                fc_ulp_user_get ( user );
                user->examine ( user );
                fc_ulp_user_put ( user );
        }

        /* Close ULP if there are no clients attached */
        if ( list_empty ( &ulp->users ) )
                fc_ulp_close ( ulp, rc );
}

References DBGC, fc_link_err(), fc_link_ok(), fc_ntoa(), fc_ulp_close(), fc_ulp_put(), fc_ulp_user_get(), fc_ulp_user_put(), fc_ulp::flags, free, fc_ulp::link, fc_ulp_user::list, list_empty, list_for_each_entry_safe, NULL, fc_ulp::param, fc_ulp::param_len, fc_ulp::peer, fc_peer::port_wwn, rc, strerror(), tmp, fc_ulp::type, fc_ulp_user::ulp, user, and fc_ulp::users.

Referenced by fc_els_prli_rx(), fc_ulp_detach(), fc_ulp_examine(), fc_ulp_login(), and fc_ulp_prli_done().

Variable Documentation

fc_empty_port_id

struct fc_port_id fc_empty_port_id

Unassigned port ID.

Definition at line 65 of file fc.c.

Referenced by fc_port_deliver(), and fcels_exec().

fc_f_port_id

struct fc_port_id fc_f_port_id

F_Port contoller port ID.

Definition at line 68 of file fc.c.

Referenced by fc_els_flogi(), fc_els_logo_logout(), fc_port_deliver(), and fcels_exec().

fc_gs_port_id

struct fc_port_id fc_gs_port_id

Generic services port ID.

Definition at line 71 of file fc.c.

Referenced by fc_ns_query_step(), and fc_port_login().

fc_ptp_low_port_id

struct fc_port_id fc_ptp_low_port_id

Point-to-point low port ID.

Definition at line 74 of file fc.c.

Referenced by fc_port_login().

fc_ptp_high_port_id

struct fc_port_id fc_ptp_high_port_id

Point-to-point high port ID.

Definition at line 77 of file fc.c.

Referenced by fc_port_login().

fc_ports

struct list_head fc_ports

Referenced by fc_peer_examine(), fc_port_find(), fc_port_open(), fcels_exec(), and fcstat_exec().

fc_peers

struct list_head fc_peers

Referenced by fc_peer_create(), fc_peer_get_port_id(), fc_peer_get_wwn(), fc_port_login(), fc_port_logout(), and fcstat_exec().