drivers/scsi/bfa/bfa_fcs_lport.c

Source file repositories/reference/linux-study-clean/drivers/scsi/bfa/bfa_fcs_lport.c

File Facts

System
Linux kernel
Corpus path
drivers/scsi/bfa/bfa_fcs_lport.c
Extension
.c
Size
175647 bytes
Lines
6765
Domain
Driver Families
Bucket
drivers/scsi
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct bfa_fcs_vport_sm_table_s {
	bfa_fcs_vport_sm_t sm;		/*  state machine function	*/
	enum bfa_vport_state state;	/*  state machine encoding	*/
	char		*name;		/*  state name for display	*/
};

static inline enum bfa_vport_state
bfa_vport_sm_to_state(struct bfa_fcs_vport_sm_table_s *smt, bfa_fcs_vport_sm_t sm)
{
	int i = 0;

	while (smt[i].sm && smt[i].sm != sm)
		i++;
	return smt[i].state;
}

static struct bfa_fcs_vport_sm_table_s  vport_sm_table[] = {
	{BFA_SM(bfa_fcs_vport_sm_uninit), BFA_FCS_VPORT_UNINIT},
	{BFA_SM(bfa_fcs_vport_sm_created), BFA_FCS_VPORT_CREATED},
	{BFA_SM(bfa_fcs_vport_sm_offline), BFA_FCS_VPORT_OFFLINE},
	{BFA_SM(bfa_fcs_vport_sm_fdisc), BFA_FCS_VPORT_FDISC},
	{BFA_SM(bfa_fcs_vport_sm_fdisc_retry), BFA_FCS_VPORT_FDISC_RETRY},
	{BFA_SM(bfa_fcs_vport_sm_fdisc_rsp_wait), BFA_FCS_VPORT_FDISC_RSP_WAIT},
	{BFA_SM(bfa_fcs_vport_sm_online), BFA_FCS_VPORT_ONLINE},
	{BFA_SM(bfa_fcs_vport_sm_deleting), BFA_FCS_VPORT_DELETING},
	{BFA_SM(bfa_fcs_vport_sm_cleanup), BFA_FCS_VPORT_CLEANUP},
	{BFA_SM(bfa_fcs_vport_sm_logo), BFA_FCS_VPORT_LOGO},
	{BFA_SM(bfa_fcs_vport_sm_error), BFA_FCS_VPORT_ERROR}
};

/*
 * Beginning state.
 */
static void
bfa_fcs_vport_sm_uninit(struct bfa_fcs_vport_s *vport,
			enum bfa_fcs_vport_event event)
{
	bfa_trc(__vport_fcs(vport), __vport_pwwn(vport));
	bfa_trc(__vport_fcs(vport), event);

	switch (event) {
	case BFA_FCS_VPORT_SM_CREATE:
		bfa_sm_set_state(vport, bfa_fcs_vport_sm_created);
		bfa_fcs_fabric_addvport(__vport_fabric(vport), vport);
		break;

	default:
		bfa_sm_fault(__vport_fcs(vport), event);
	}
}

/*
 * Created state - a start event is required to start up the state machine.
 */
static void
bfa_fcs_vport_sm_created(struct bfa_fcs_vport_s *vport,
			enum bfa_fcs_vport_event event)
{
	bfa_trc(__vport_fcs(vport), __vport_pwwn(vport));
	bfa_trc(__vport_fcs(vport), event);

	switch (event) {
	case BFA_FCS_VPORT_SM_START:
		if (bfa_sm_cmp_state(__vport_fabric(vport),
					bfa_fcs_fabric_sm_online)
		    && bfa_fcs_fabric_npiv_capable(__vport_fabric(vport))) {
			bfa_sm_set_state(vport, bfa_fcs_vport_sm_fdisc);
			bfa_fcs_vport_do_fdisc(vport);
		} else {
			/*
			 * Fabric is offline or not NPIV capable, stay in
			 * offline state.
			 */
			vport->vport_stats.fab_no_npiv++;
			bfa_sm_set_state(vport, bfa_fcs_vport_sm_offline);
		}
		break;

	case BFA_FCS_VPORT_SM_DELETE:
		bfa_sm_set_state(vport, bfa_fcs_vport_sm_cleanup);
		bfa_fcs_lport_delete(&vport->lport);
		break;

	case BFA_FCS_VPORT_SM_ONLINE:
	case BFA_FCS_VPORT_SM_OFFLINE:
		/*
		 * Ignore ONLINE/OFFLINE events from fabric
		 * till vport is started.
		 */
		break;

Annotation

Implementation Notes