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[fc] Support Fibre Channel ECHO

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Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown 2010-11-04 02:49:07 +00:00
parent f5115f96f7
commit 90930be8fe
3 changed files with 237 additions and 103 deletions
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37
src/include/ipxe/fcels.h
View File

@ -34,6 +34,7 @@ enum fc_els_command_code {
FC_ELS_FLOGI = 0x04, /**< Fabric Login */
FC_ELS_LOGO = 0x05, /**< Logout */
FC_ELS_RTV = 0x0e, /**< Read Timeout Value */
FC_ELS_ECHO = 0x10, /**< Echo */
FC_ELS_PRLI = 0x20, /**< Process Login */
FC_ELS_PRLO = 0x21, /**< Process Logout */
};
@ -310,6 +311,14 @@ struct fc_rtv_response_frame {
/** Short R_T timeout */
#define FC_RTV_SHORT_R_T_TOV 0x0008
/** A Fibre Channel ECHO frame */
struct fc_echo_frame_header {
/** ELS command code */
uint8_t command;
/** Reserved */
uint8_t reserved[3];
} __attribute__ (( packed ));
/** A Fibre Channel extended link services transaction */
struct fc_els {
/** Reference count */
@ -343,37 +352,21 @@ enum fc_els_flags {
struct fc_els_handler {
/** Name */
const char *name;
/** Transmit ELS request frame
/** Transmit ELS frame
*
* @v els Fibre Channel ELS transaction
* @ret rc Return status code
*/
int ( * tx_request ) ( struct fc_els *els );
/** Transmit ELS response frame
*
* @v els Fibre Channel ELS transaction
* @ret rc Return status code
*/
int ( * tx_response ) ( struct fc_els *els );
/** Receive ELS request frame
int ( * tx ) ( struct fc_els *els );
/** Receive ELS frame
*
* @v els Fibre Channel ELS transaction
* @v data ELS frame
* @v len Length of ELS frame
* @ret rc Return status code
*/
int ( * rx_request ) ( struct fc_els *els, const void *data,
size_t len );
/** Receive ELS response frame
*
* @v els Fibre Channel ELS transaction
* @v data ELS frame
* @v len Length of ELS frame
* @ret rc Return status code
*/
int ( * rx_response ) ( struct fc_els *els, const void *data,
size_t len );
/** Detect ELS request frame
int ( * rx ) ( struct fc_els *els, void *data, size_t len );
/** Detect ELS frame
*
* @v els Fibre Channel ELS transaction
* @v data ELS frame
@ -444,7 +437,7 @@ extern int fc_els_prli_tx ( struct fc_els *els,
void *param );
extern int fc_els_prli_rx ( struct fc_els *els,
struct fc_els_prli_descriptor *descriptor,
const void *data, size_t len );
void *data, size_t len );
extern int fc_els_prli_detect ( struct fc_els *els __unused,
struct fc_els_prli_descriptor *descriptor,
const void *data, size_t len );

295
src/net/fcels.c
View File

@ -158,7 +158,6 @@ static int fc_els_rx ( struct fc_els *els,
struct sockaddr_fc *src = ( ( struct sockaddr_fc * ) meta->src );
struct sockaddr_fc *dest = ( ( struct sockaddr_fc * ) meta->dest );
size_t len = iob_len ( iobuf );
int ( * rx ) ( struct fc_els *els, const void *data, size_t len );
int rc;
/* Sanity check */
@ -206,28 +205,13 @@ static int fc_els_rx ( struct fc_els *els,
DBGC2_HDA ( els, 0, frame, len );
/* Handle received frame */
rx = ( fc_els_is_request ( els ) ?
els->handler->rx_response : els->handler->rx_request );
if ( ( rc = rx ( els, frame, len ) ) != 0 ) {
if ( ( rc = els->handler->rx ( els, frame, len ) ) != 0 ) {
DBGC ( els, FCELS_FMT " could not handle received frame: "
"%s\n", FCELS_ARGS ( els ), strerror ( rc ) );
DBGC_HDA ( els, 0, frame, len );
goto done;
}
/* Free I/O buffer. Do this before transmitting response to
* minimise memory consumption.
*/
free_iob ( iob_disown ( iobuf ) );
/* Transmit response if applicable */
if ( ( ! fc_els_is_request ( els ) ) &&
( ( rc = els->handler->tx_response ( els ) ) != 0 ) ) {
DBGC ( els, FCELS_FMT " could not transmit response: %s\n",
FCELS_ARGS ( els ), strerror ( rc ) );
goto done;
}
done:
/* Free I/O buffer */
free_iob ( iobuf );
@ -286,7 +270,7 @@ static void fc_els_step ( struct process *process ) {
}
/* Transmit request */
if ( ( rc = els->handler->tx_request ( els ) ) != 0 ) {
if ( ( rc = els->handler->tx ( els ) ) != 0 ) {
DBGC ( els, FCELS_FMT " could not transmit request: %s\n",
FCELS_ARGS ( els ), strerror ( rc ) );
fc_els_close ( els, rc );
@ -394,7 +378,7 @@ struct fc_responder fc_els_responder __fc_responder = {
* @v els Fibre Channel ELS transaction
* @ret rc Return status code
*/
static int fc_els_unknown_tx_request ( struct fc_els *els __unused ) {
static int fc_els_unknown_tx ( struct fc_els *els __unused ) {
return -ENOTSUP;
}
@ -417,34 +401,26 @@ static int fc_els_unknown_tx_response ( struct fc_els *els ) {
}
/**
* Receive unknown ELS request
* Receive unknown ELS
*
* @v els Fibre Channel ELS transaction
* @v data ELS frame
* @v len Length of ELS frame
* @ret rc Return status code
*/
static int fc_els_unknown_rx_request ( struct fc_els *els, const void *data,
size_t len ) {
static int fc_els_unknown_rx ( struct fc_els *els, void *data, size_t len ) {
int rc;
DBGC ( els, FCELS_FMT ":\n", FCELS_ARGS ( els ) );
DBGC_HDA ( els, 0, data, len );
return 0;
}
/**
* Receive unknown ELS response
*
* @v els Fibre Channel ELS transaction
* @v data ELS frame
* @v len Length of ELS frame
* @ret rc Return status code
*/
static int fc_els_unknown_rx_response ( struct fc_els *els __unused,
const void *data __unused,
size_t len __unused ) {
assert ( 0 );
return -EINVAL;
/* Transmit response, if applicable */
if ( ! fc_els_is_request ( els ) ) {
if ( ( rc = fc_els_unknown_tx_response ( els ) ) != 0 )
return rc;
}
return 0;
}
/**
@ -464,10 +440,8 @@ static int fc_els_unknown_detect ( struct fc_els *els __unused,
/** Unknown ELS handler */
struct fc_els_handler fc_els_unknown_handler __fc_els_handler = {
.name = "UNKNOWN",
.tx_request = fc_els_unknown_tx_request,
.tx_response = fc_els_unknown_tx_response,
.rx_request = fc_els_unknown_rx_request,
.rx_response = fc_els_unknown_rx_response,
.tx = fc_els_unknown_tx,
.rx = fc_els_unknown_rx,
.detect = fc_els_unknown_detect,
};
@ -513,9 +487,8 @@ static int fc_els_flogi_tx ( struct fc_els *els ) {
* @v len Length of ELS frame
* @ret rc Return status code
*/
static int fc_els_flogi_rx ( struct fc_els *els, const void *data,
size_t len ) {
const struct fc_login_frame *flogi = data;
static int fc_els_flogi_rx ( struct fc_els *els, void *data, size_t len ) {
struct fc_login_frame *flogi = data;
int has_fabric;
int rc;
@ -557,6 +530,12 @@ static int fc_els_flogi_rx ( struct fc_els *els, const void *data,
sizeof ( els->peer_port_id ) );
}
/* Transmit response, if applicable */
if ( ! fc_els_is_request ( els ) ) {
if ( ( rc = fc_els_flogi_tx ( els ) ) != 0 )
return rc;
}
return 0;
}
@ -582,10 +561,8 @@ static int fc_els_flogi_detect ( struct fc_els *els __unused, const void *data,
/** FLOGI ELS handler */
struct fc_els_handler fc_els_flogi_handler __fc_els_handler = {
.name = "FLOGI",
.tx_request = fc_els_flogi_tx,
.tx_response = fc_els_flogi_tx,
.rx_request = fc_els_flogi_rx,
.rx_response = fc_els_flogi_rx,
.tx = fc_els_flogi_tx,
.rx = fc_els_flogi_rx,
.detect = fc_els_flogi_detect,
};
@ -650,9 +627,8 @@ static int fc_els_plogi_tx ( struct fc_els *els ) {
* @v len Length of ELS frame
* @ret rc Return status code
*/
static int fc_els_plogi_rx ( struct fc_els *els, const void *data,
size_t len ) {
const struct fc_login_frame *plogi = data;
static int fc_els_plogi_rx ( struct fc_els *els, void *data, size_t len ) {
struct fc_login_frame *plogi = data;
struct fc_peer *peer;
int rc;
@ -695,11 +671,18 @@ static int fc_els_plogi_rx ( struct fc_els *els, const void *data,
goto err_login;
}
/* Transmit response, if applicable */
if ( ! fc_els_is_request ( els ) ) {
if ( ( rc = fc_els_plogi_tx ( els ) ) != 0 )
goto err_plogi_tx;
}
/* Drop temporary reference to peer */
fc_peer_put ( peer );
return 0;
err_plogi_tx:
err_login:
fc_peer_put ( peer );
err_peer_get_wwn:
@ -729,10 +712,8 @@ static int fc_els_plogi_detect ( struct fc_els *els __unused, const void *data,
/** PLOGI ELS handler */
struct fc_els_handler fc_els_plogi_handler __fc_els_handler = {
.name = "PLOGI",
.tx_request = fc_els_plogi_tx,
.tx_response = fc_els_plogi_tx,
.rx_request = fc_els_plogi_rx,
.rx_response = fc_els_plogi_rx,
.tx = fc_els_plogi_tx,
.rx = fc_els_plogi_rx,
.detect = fc_els_plogi_detect,
};
@ -764,7 +745,7 @@ int fc_els_plogi ( struct interface *parent, struct fc_port *port,
* @v els Fibre Channel ELS transaction
* @ret rc Return status code
*/
static int fc_els_logo_tx_request ( struct fc_els *els ) {
static int fc_els_logo_tx ( struct fc_els *els ) {
struct fc_logout_request_frame logo;
/* Construct LOGO */
@ -802,7 +783,7 @@ static int fc_els_logo_tx_response ( struct fc_els *els ) {
* @v port_id Peer port ID
*/
static void fc_els_logo_logout ( struct fc_els *els,
const struct fc_port_id *peer_port_id ) {
struct fc_port_id *peer_port_id ) {
struct fc_peer *peer;
if ( ( memcmp ( peer_port_id, &fc_f_port_id,
@ -827,9 +808,10 @@ static void fc_els_logo_logout ( struct fc_els *els,
* @v len Length of ELS frame
* @ret rc Return status code
*/
static int fc_els_logo_rx_request ( struct fc_els *els, const void *data,
static int fc_els_logo_rx_request ( struct fc_els *els, void *data,
size_t len ) {
const struct fc_logout_request_frame *logo = data;
struct fc_logout_request_frame *logo = data;
int rc;
/* Sanity check */
if ( len < sizeof ( *logo ) ) {
@ -845,6 +827,10 @@ static int fc_els_logo_rx_request ( struct fc_els *els, const void *data,
/* Log out individual peer or whole port as applicable */
fc_els_logo_logout ( els, &logo->port_id );
/* Transmit repsonse */
if ( ( rc = fc_els_logo_tx_response ( els ) ) != 0 )
return rc;
return 0;
}
@ -856,8 +842,7 @@ static int fc_els_logo_rx_request ( struct fc_els *els, const void *data,
* @v len Length of ELS frame
* @ret rc Return status code
*/
static int fc_els_logo_rx_response ( struct fc_els *els,
const void *data __unused,
static int fc_els_logo_rx_response ( struct fc_els *els, void *data __unused,
size_t len __unused ) {
/* Log out individual peer or whole port as applicable */
@ -866,6 +851,23 @@ static int fc_els_logo_rx_response ( struct fc_els *els,
return 0;
}
/**
* Receive LOGO
*
* @v els Fibre Channel ELS transaction
* @v data ELS frame
* @v len Length of ELS frame
* @ret rc Return status code
*/
static int fc_els_logo_rx ( struct fc_els *els, void *data, size_t len ) {
if ( fc_els_is_request ( els ) ) {
return fc_els_logo_rx_response ( els, data, len );
} else {
return fc_els_logo_rx_request ( els, data, len );
}
}
/**
* Detect LOGO
*
@ -888,10 +890,8 @@ static int fc_els_logo_detect ( struct fc_els *els __unused, const void *data,
/** LOGO ELS handler */
struct fc_els_handler fc_els_logo_handler __fc_els_handler = {
.name = "LOGO",
.tx_request = fc_els_logo_tx_request,
.tx_response = fc_els_logo_tx_response,
.rx_request = fc_els_logo_rx_request,
.rx_response = fc_els_logo_rx_response,
.tx = fc_els_logo_tx,
.rx = fc_els_logo_rx,
.detect = fc_els_logo_detect,
};
@ -1000,8 +1000,8 @@ int fc_els_prli_tx ( struct fc_els *els,
*/
int fc_els_prli_rx ( struct fc_els *els,
struct fc_els_prli_descriptor *descriptor,
const void *data, size_t len ) {
const struct {
void *data, size_t len ) {
struct {
struct fc_prli_frame frame;
uint8_t param[descriptor->param_len];
} __attribute__ (( packed )) *prli = data;
@ -1055,11 +1055,18 @@ int fc_els_prli_rx ( struct fc_els *els,
}
}
/* Transmit response, if applicable */
if ( ! fc_els_is_request ( els ) ) {
if ( ( rc = els->handler->tx ( els ) ) != 0 )
goto err_tx;
}
/* Drop temporary reference to ULP */
fc_ulp_put ( ulp );
return 0;
err_tx:
err_login:
err_link:
fc_ulp_put ( ulp );
@ -1148,20 +1155,25 @@ static int fc_els_rtv_tx_response ( struct fc_els *els ) {
}
/**
* Receive RTV request
* Receive RTV
*
* @v els Fibre Channel ELS transaction
* @v data ELS frame
* @v len Length of ELS frame
* @ret rc Return status code
*/
static int fc_els_rtv_rx_request ( struct fc_els *els,
const void *data __unused,
size_t len __unused ) {
static int fc_els_rtv_rx ( struct fc_els *els, void *data __unused,
size_t len __unused ) {
int rc;
DBGC ( els, FCELS_FMT "\n", FCELS_ARGS ( els ) );
/* Nothing to do */
/* Transmit response */
if ( ! fc_els_is_request ( els ) ) {
if ( ( rc = fc_els_rtv_tx_response ( els ) ) != 0 )
return rc;
}
return 0;
}
@ -1187,9 +1199,140 @@ static int fc_els_rtv_detect ( struct fc_els *els __unused, const void *data,
/** RTV ELS handler */
struct fc_els_handler fc_els_rtv_handler __fc_els_handler = {
.name = "RTV",
.tx_request = fc_els_unknown_tx_request,
.tx_response = fc_els_rtv_tx_response,
.rx_request = fc_els_rtv_rx_request,
.rx_response = fc_els_unknown_rx_response,
.tx = fc_els_unknown_tx,
.rx = fc_els_rtv_rx,
.detect = fc_els_rtv_detect,
};
/******************************************************************************
*
* ECHO
*
******************************************************************************
*/
/** ECHO request data */
struct fc_echo_request_frame {
/** ECHO frame header */
struct fc_echo_frame_header echo;
/** Magic marker */
uint32_t magic;
} __attribute__ (( packed ));
/** ECHO magic marker */
#define FC_ECHO_MAGIC 0x69505845
/**
* Transmit ECHO
*
* @v els Fibre Channel ELS transaction
* @ret rc Return status code
*/
static int fc_els_echo_tx ( struct fc_els *els ) {
struct fc_echo_request_frame echo;
/* Construct ECHO */
memset ( &echo, 0, sizeof ( echo ) );
echo.echo.command = FC_ELS_ECHO;
echo.magic = htonl ( FC_ECHO_MAGIC );
/* Transmit ECHO */
return fc_els_tx ( els, &echo, sizeof ( echo ) );
}
/**
* Receive ECHO request
*
* @v els Fibre Channel ELS transaction
* @v data ELS frame
* @v len Length of ELS frame
* @ret rc Return status code
*/
static int fc_els_echo_rx_request ( struct fc_els *els, void *data,
size_t len ) {
struct {
struct fc_echo_frame_header echo;
char payload[ len - sizeof ( struct fc_echo_frame_header ) ];
} *echo = data;
int rc;
DBGC ( els, FCELS_FMT "\n", FCELS_ARGS ( els ) );
/* Transmit response */
echo->echo.command = FC_ELS_LS_ACC;
if ( ( rc = fc_els_tx ( els, echo, sizeof ( *echo ) ) ) != 0 )
return rc;
/* Nothing to do */
return 0;
}
/**
* Receive ECHO response
*
* @v els Fibre Channel ELS transaction
* @v data ELS frame
* @v len Length of ELS frame
* @ret rc Return status code
*/
static int fc_els_echo_rx_response ( struct fc_els *els, void *data,
size_t len ) {
struct fc_echo_request_frame *echo = data;
DBGC ( els, FCELS_FMT "\n", FCELS_ARGS ( els ) );
/* Check response is correct */
if ( ( len != sizeof ( *echo ) ) ||
( echo->magic != htonl ( FC_ECHO_MAGIC ) ) ) {
DBGC ( els, FCELS_FMT " received bad echo response\n",
FCELS_ARGS ( els ) );
DBGC_HDA ( els, 0, data, len );
return -EIO;
}
return 0;
}
/**
* Receive ECHO
*
* @v els Fibre Channel ELS transaction
* @v data ELS frame
* @v len Length of ELS frame
* @ret rc Return status code
*/
static int fc_els_echo_rx ( struct fc_els *els, void *data, size_t len ) {
if ( fc_els_is_request ( els ) ) {
return fc_els_echo_rx_response ( els, data, len );
} else {
return fc_els_echo_rx_request ( els, data, len );
}
}
/**
* Detect ECHO
*
* @v els Fibre Channel ELS transaction
* @v data ELS frame
* @v len Length of ELS frame
* @ret rc Return status code
*/
static int fc_els_echo_detect ( struct fc_els *els __unused, const void *data,
size_t len __unused ) {
const struct fc_echo_frame_header *echo = data;
/* Check for ECHO */
if ( echo->command != FC_ELS_ECHO )
return -EINVAL;
return 0;
}
/** ECHO ELS handler */
struct fc_els_handler fc_els_echo_handler __fc_els_handler = {
.name = "ECHO",
.tx = fc_els_echo_tx,
.rx = fc_els_echo_rx,
.detect = fc_els_echo_detect,
};

8
src/net/fcp.c
View File

@ -103,7 +103,7 @@ static int fcp_prli_tx ( struct fc_els *els ) {
* @v len Length of ELS frame
* @ret rc Return status code
*/
static int fcp_prli_rx ( struct fc_els *els, const void *data, size_t len ) {
static int fcp_prli_rx ( struct fc_els *els, void *data, size_t len ) {
return fc_els_prli_rx ( els, &fcp_prli_descriptor, data, len );
}
@ -123,10 +123,8 @@ static int fcp_prli_detect ( struct fc_els *els, const void *data,
/** FCP PRLI ELS handler */
struct fc_els_handler fcp_prli_handler __fc_els_handler = {
.name = "PRLI-FCP",
.tx_request = fcp_prli_tx,
.tx_response = fcp_prli_tx,
.rx_request = fcp_prli_rx,
.rx_response = fcp_prli_rx,
.tx = fcp_prli_tx,
.rx = fcp_prli_rx,
.detect = fcp_prli_detect,
};