#include "ocs.h"
#include "ocs_els.h"
#include "ocs_fabric.h"
#include "ocs_device.h"
#include "scsi_cmds.h"

Detailed Description

Code to handle unsolicited received FC frames.

Definition in file ocs_unsol.c.

Macros
#define	frame_printf(ocs, hdr, fmt,...)

#define	OCS_MAX_FRAMES_BEFORE_YEILDING 10000

Functions
static int32_t	ocs_unsol_process (ocs_t ocs, ocs_hal_sequence_t seq)
	Handle unsolicited FC frames. More...

static int32_t	ocs_dispatch_fcp_cmd (ocs_node_t node, ocs_hal_sequence_t seq)
	Dispatch unsolicited FCP_CMND frame. More...

static int32_t	ocs_dispatch_tow_fcp_cmd (ocs_node_t node, ocs_hal_sequence_t seq)
	Dispatch unsolicited FCP_CMND frame. More...

static int32_t	ocs_dispatch_fcp_data (ocs_node_t node, ocs_hal_sequence_t seq)
	Dispatch FCP data frames for TOW. More...

static uint32_t	ocs_fc_decode_lun (uint8_t *lu)
	Decode a LU Number according to SAM. More...

static int32_t	ocs_domain_dispatch_frame (void arg, ocs_hal_sequence_t seq)
	Dispatch unsolicited FC frame. More...

static int32_t	ocs_node_dispatch_frame (void arg, ocs_hal_sequence_t seq)
	Dispatch a frame. More...

static int32_t	ocs_fc_tmf_rejected_cb (ocs_io_t io, ocs_scsi_io_status_e scsi_status, uint32_t flags, void arg)
	Handle the callback for the TMF FUNCTION_REJECTED response. More...

static uint8_t	ocs_node_frames_held (void *arg)
	Check if node's pending frames are held. More...

static uint8_t	ocs_domain_frames_held (void *arg)
	Check if domain's pending frames are held. More...

static int32_t	ocs_purge_pending (ocs_t ocs, ocs_list_t pend_list, ocs_lock_t *list_lock)
	Purge given pending list. More...

static int32_t	ocs_sframe_send_task_set_full_or_busy (ocs_node_t node, ocs_hal_sequence_t seq)
	Send task set full response. More...

ocs_hal_sequence_t *	ocs_frame_next (ocs_list_t pend_list, ocs_lock_t list_lock)
	Return next FC frame on node->pend_frames list. More...

int32_t	ocs_unsol_rq_thread (ocs_thread_t *mythread)
	Process the RQ circular buffer and process the incoming frames. More...

static int32_t	ocs_unsol_abort_cb (ocs_hal_io_t hio, ocs_remote_node_t rnode, uint32_t len, int32_t status, uint32_t ext, void *arg)
	Callback function when aborting a port owned XRI exchanges. More...

static void	ocs_port_owned_abort (ocs_t ocs, ocs_hal_io_t hio)
	Abort either a RQ Pair auto XFER RDY XRI. More...

int32_t	ocs_unsolicited_cb (void arg, ocs_hal_sequence_t seq)
	Handle unsolicited FC frames. More...

int32_t	ocs_process_node_pending (ocs_node_t *node)
	Process pending frames queued to the given node. More...

int32_t	ocs_domain_process_pending (ocs_domain_t *domain)
	Process pending frames queued to the given domain. More...

int32_t	ocs_node_purge_pending (ocs_node_t *node)
	Purge node's pending (queued) frames. More...

int32_t	ocs_domain_purge_pending (ocs_domain_t *domain)
	Purge xport's pending (queued) frames. More...

void	ocs_domain_hold_frames (ocs_domain_t *domain)
	Globally (at xport level) hold unsolicited frames. More...

void	ocs_domain_accept_frames (ocs_domain_t *domain)
	Clear hold on unsolicited frames. More...

static void	ocs_dispatch_unsolicited_tmf (ocs_io_t io, uint8_t task_management_flags, ocs_node_t node, uint32_t lun)
	Dispatch unsolicited FCP frames (RQ Pair). More...

static int32_t	ocs_validate_fcp_cmd (ocs_t ocs, ocs_hal_sequence_t seq)

static void	ocs_populate_io_fcp_cmd (ocs_io_t io, fcp_cmnd_iu_t cmnd, fc_header_t *fchdr, uint8_t sit)

static uint32_t	ocs_get_flags_fcp_cmd (fcp_cmnd_iu_t *cmnd)

static void	ocs_sframe_common_send_cb (void arg, uint8_t cqe, int32_t status)
	Process send fcp response frame callback. More...

static int32_t	ocs_sframe_common_send (ocs_node_t node, ocs_hal_sequence_t seq, uint8_t r_ctl, uint8_t info, uint32_t f_ctl, uint8_t type, void *payload, uint32_t payload_len)
	Send a frame, common code. More...

static int32_t	ocs_sframe_send_fcp_rsp (ocs_node_t node, ocs_hal_sequence_t seq, void *rsp, uint32_t rsp_len)
	Send FCP response using SEND_FRAME. More...

int32_t	ocs_sframe_send_bls_acc (ocs_node_t node, ocs_hal_sequence_t seq)
	Send BA_ACC using sent frame. More...

Macro Details

#define frame_printf	(	ocs,
		hdr,
		fmt,
		...
	)

Value:

do { \
        char s_id_text[16]; \
		ocs_node_fcid_display(fc_be24toh((hdr)->s_id), s_id_text, sizeof(s_id_text)); \
        ocs_log_debug(ocs, "[%06x.%s] %02x/%04x/%04x: " fmt, fc_be24toh((hdr)->d_id), s_id_text, \
            (hdr)->r_ctl, ocs_be16toh((hdr)->ox_id), ocs_be16toh((hdr)->rx_id), ##__VA_ARGS__); \
    } while(0)

Definition at line 49 of file ocs_unsol.c.

#define OCS_MAX_FRAMES_BEFORE_YEILDING 10000

Definition at line 71 of file ocs_unsol.c.

Function Details

ocs_hal_sequence_t * ocs_frame_next	(	ocs_list_t *	pend_list,
		ocs_lock_t *	list_lock
	)

Return next FC frame on node->pend_frames list.

The next FC frame on the node->pend_frames list is returned, or NULL if the list is empty.

Parameters

pend_list	Pending list to be purged.
list_lock	Lock that protects pending list.

Returns: Returns pointer to the next FC frame, or NULL if the pending frame list is empty.

Definition at line 1248 of file ocs_unsol.c.

static uint32_t ocs_get_flags_fcp_cmd ( fcp_cmnd_iu_t * cmnd )

static

Definition at line 850 of file ocs_unsol.c.

static void ocs_populate_io_fcp_cmd	(	ocs_io_t *	io,
		fcp_cmnd_iu_t *	cmnd,
		fc_header_t *	fchdr,
		uint8_t	sit
	)

static

Definition at line 826 of file ocs_unsol.c.

static int32_t ocs_sframe_common_send	(	ocs_node_t *	node,
		ocs_hal_sequence_t *	seq,
		uint8_t	r_ctl,
		uint8_t	info,
		uint32_t	f_ctl,
		uint8_t	type,
		void *	payload,
		uint32_t	payload_len
	)

static

Send a frame, common code.

A frame is sent using SEND_FRAME, the R_CTL/F_CTL/TYPE may be specified, the payload is sent as a single frame.

Memory resources are allocated from RQ buffers contained in the passed in sequence data.

Parameters

node	Pointer to node object.
seq	Pointer to sequence object.
r_ctl	R_CTL value to place in FC header.
info	INFO value to place in FC header.
f_ctl	F_CTL value to place in FC header.
type	TYPE value to place in FC header.
payload	Pointer to payload data
payload_len	Length of payload in bytes.

Returns: Returns 0 on success, or a negative error code value on failure.

Definition at line 1303 of file ocs_unsol.c.

static void ocs_sframe_common_send_cb	(	void *	arg,
		uint8_t *	cqe,
		int32_t	status
	)

static

Process send fcp response frame callback.

The function is called when the send FCP response posting has completed. Regardless of the outcome, the sequence is freed.

Parameters

arg	Pointer to originator frame sequence.
cqe	Pointer to completion queue entry.
status	Status of operation.

Returns: None.

Definition at line 1271 of file ocs_unsol.c.

int32_t ocs_sframe_send_bls_acc	(	ocs_node_t *	node,
		ocs_hal_sequence_t *	seq
	)

Send BA_ACC using sent frame.

A BA_ACC is sent using SEND_FRAME

Parameters

node	Pointer to node object.
seq	Pointer to originator frame sequence.

Returns: Returns 0 on success, or a negative error code value on failure.

Definition at line 1450 of file ocs_unsol.c.

static int32_t ocs_sframe_send_fcp_rsp	(	ocs_node_t *	node,
		ocs_hal_sequence_t *	seq,
		void *	rsp,
		uint32_t	rsp_len
	)

static

Send FCP response using SEND_FRAME.

The FCP response is send using the SEND_FRAME function.

Parameters

node	Pointer to node object.
seq	Pointer to inbound sequence.
rsp	Pointer to response data.
rsp_len	Length of response data, in bytes.

Returns: Returns 0 on success, or a negative error code value on failure.

Definition at line 1387 of file ocs_unsol.c.

static int32_t ocs_sframe_send_task_set_full_or_busy	(	ocs_node_t *	node,
		ocs_hal_sequence_t *	seq
	)

static

Send task set full response.

Return a task set full or busy response using send frame.

Parameters

node	Pointer to node object.
seq	Pointer to originator frame sequence.

Returns: Returns 0 on success, or a negative error code value on failure.

Definition at line 1411 of file ocs_unsol.c.

int32_t ocs_unsol_rq_thread ( ocs_thread_t * mythread )

Process the RQ circular buffer and process the incoming frames.

Parameters

mythread Pointer to thread object.

Returns: Returns 0 on success, or a non-zero value on failure.

Definition at line 81 of file ocs_unsol.c.

static int32_t ocs_validate_fcp_cmd	(	ocs_t *	ocs,
		ocs_hal_sequence_t *	seq
	)

static

Definition at line 803 of file ocs_unsol.c.

Detailed Description

Macros

Functions

Macro Details

Function Details