// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2021 Broadcom. All Rights Reserved. The term
* “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.
*/
/*
* device_sm Node State Machine: Remote Device States
*/
#include "efc.h"
#include "efc_device.h"
#include "efc_fabric.h"
void
efc_d_send_prli_rsp(struct efc_node *node, u16 ox_id)
{
int rc = EFC_SCSI_CALL_COMPLETE;
struct efc *efc = node->efc;
node->ls_acc_oxid = ox_id;
node->send_ls_acc = EFC_NODE_SEND_LS_ACC_PRLI;
/*
* Wait for backend session registration
* to complete before sending PRLI resp
*/
if (node->init) {
efc_log_info(efc, "[%s] found(initiator) WWPN:%s WWNN:%s\n",
node->display_name, node->wwpn, node->wwnn);
if (node->nport->enable_tgt)
rc = efc->tt.scsi_new_node(efc, node);
}
if (rc < 0)
efc_node_post_event(node, EFC_EVT_NODE_SESS_REG_FAIL, NULL);
if (rc == EFC_SCSI_CALL_COMPLETE)
efc_node_post_event(node, EFC_EVT_NODE_SESS_REG_OK, NULL);
}
static void
__efc_d_common(const char *funcname, struct efc_sm_ctx *ctx,
enum efc_sm_event evt, void *arg)
{
struct efc_node *node = NULL;
struct efc *efc = NULL;
node = ctx->app;
efc = node->efc;
switch (evt) {
/* Handle shutdown events */
case EFC_EVT_SHUTDOWN:
efc_log_debug(efc, "[%s] %-20s %-20s\n", node->display_name,
funcname, efc_sm_event_name(evt));
node->shutdown_reason = EFC_NODE_SHUTDOWN_DEFAULT;
efc_node_transition(node, __efc_d_initiate_shutdown, NULL);
break;
case EFC_EVT_SHUTDOWN_EXPLICIT_LOGO:
efc_log_debug(efc, "[%s] %-20s %-20s\n",
node->display_name, funcname,
efc_sm_event_name(evt));
node->shutdown_reason = EFC_NODE_SHUTDOWN_EXPLICIT_LOGO;
efc_node_transition(node, __efc_d_initiate_shutdown, NULL);
break;
case EFC_EVT_SHUTDOWN_IMPLICIT_LOGO:
efc_log_debug(efc, "[%s] %-20s %-20s\n", node->display_name,
funcname, efc_sm_event_name(evt));
node->shutdown_reason = EFC_NODE_SHUTDOWN_IMPLICIT_LOGO;
efc_node_transition(node, __efc_d_initiate_shutdown, NULL);
break;
default:
/* call default event handler common to all nodes */
__efc_node_common(funcname, ctx, evt, arg);
}
}
static void
__efc_d_wait_del_node(struct efc_sm_ctx *ctx,
enum efc_sm_event evt, void *arg)
{
struct efc_node *node = ctx->app;
efc_node_evt_set(ctx, evt, __func__);
/*
* State is entered when a node sends a delete initiator/target call
* to the target-server/initiator-client and needs to wait for that
* work to complete.
*/
node_sm_trace();
switch (evt) {
case EFC_EVT_ENTER:
efc_node_hold_frames(node);
fallthrough;
case EFC_EVT_NODE_ACTIVE_IO_LIST_EMPTY:
case EFC_EVT_ALL_CHILD_NODES_FREE:
/* These are expected events. */
break;
case EFC_EVT_NODE_DEL_INI_COMPLETE:
case EFC_EVT_NODE_DEL_TGT_COMPLETE:
/*
* node has either been detached or is in the process
* of being detached,
* call common node's initiate cleanup function
*/
efc_node_initiate_cleanup(node);
break;
case EFC_EVT_EXIT:
efc_node_accept_frames(node);
break;
case EFC_EVT_SRRS_ELS_REQ_FAIL:
/* Can happen as ELS IO IO's complete */
WARN_ON(!node->els_req_cnt);
node->els_req_cnt--;
break;
/* ignore shutdown events as we're already in shutdown path */
case EFC_EVT_SHUTDOWN:
/* have default shutdown event take precedence */
node->shutdown_reason = EFC_NODE_SHUTDOWN_DEFAULT;
fallthrough;
case EFC_EVT_SHUTDOWN_EXPLICIT_LOGO:
case EFC_EVT_SHUTDOWN_IMPLICIT_LOGO:
node_printf(node, "%s received\n", efc_sm_event_name(evt));
break;
case EFC_EVT_DOMAIN_ATTACH_OK:
/* don't care about domain_attach_ok */
break;
default:
__efc_d_common(__func__, ctx, evt, arg);
}
}
static void
__efc_d_wait_del_ini_tgt(struct efc_sm_ctx *ctx,
enum efc_sm_event evt, void *arg)
{
struct efc_node *node = ctx->app;
efc_node_evt_set(ctx, evt, __func__);
node_sm_trace();
switch (evt) {
case EFC_EVT_ENTER:
efc_node_hold_frames(node);
fallthrough;
case EFC_EVT_NODE_ACTIVE_IO_LIST_EMPTY:
case EFC_EVT_ALL_CHILD_NODES_FREE:
/* These are expected events. */
break;
case EFC_EVT_NODE_DEL_INI_COMPLETE:
case EFC_EVT_NODE_DEL_TGT_COMPLETE:
efc_node_transition(node, __efc_d_wait_del_node, NULL);
break;
case EFC_EVT_EXIT:
efc_node_accept_frames(node);
break;
case EFC_EVT_SRRS_ELS_REQ_FAIL:
/* Can happen as ELS IO IO's complete */
WARN_ON(!node->els_req_cnt);
node->els_req_cnt--;
break;
/* ignore shutdown events as we're already in shutdown path */
case EFC_EVT_SHUTDOWN:
/* have default shutdown event take precedence */
node->shutdown_reason = EFC_NODE_SHUTDOWN_DEFAULT;
fallthrough;
case EFC_EVT_SHUTDOWN_EXPLICIT_LOGO:
case EFC_EVT_SHUTDOWN_IMPLICIT_LOGO:
node_printf(node, "%s received\n", efc_sm_event_name(evt));
break;
case EFC_EVT_DOMAIN_ATTACH_OK:
/* don't care about domain_attach_ok */
break;
default:
__efc_d_common(__func__, ctx, evt, arg);
}
}
void
__efc_d_initiate_shutdown(struct efc_sm_ctx *ctx,
enum efc_sm_event evt, void *arg)
{
struct efc_node *node = ctx->app;
struct efc *efc = node->efc;
efc_node_evt_set(ctx, evt, __func__);
node_sm_trace();
switch (evt) {
case EFC_EVT_ENTER: {
int rc = EFC_SCSI_CALL_COMPLETE;
/* assume no wait needed */
node->els_io_enabled = false;
/* make necessary delete upcall(s) */
if (node->init && !node->targ) {
efc_log_info(node->efc,
"[%s] delete (initiator) WWPN %s WWNN %s\n",
node->display_name,
node->wwpn, node->wwnn);
efc_node_transition(node,
__efc_d_wait_del_node,
NULL);
if (node->nport->enable_tgt)
rc = efc->tt.scsi_del_node(efc, node,
EFC_SCSI_INITIATOR_DELETED);
if (rc == EFC_SCSI_CALL_COMPLETE || rc < 0)
efc_node_post_event(node,
EFC_EVT_NODE_DEL_INI_COMPLETE, NULL);
} else if (node->targ && !node->init) {
efc_log_info(node->efc,
"[%s] delete (target) WWPN %s WWNN %s\n",
node->display_name,
node->wwpn, node->wwnn);
efc_node_transition(node,
__efc_d_wait_del_node,
NULL);
if (node->nport->enable_ini)
rc = efc->tt.scsi_del_node(efc, node,
EFC_SCSI_TARGET_DELETED);
if (rc == EFC_SCSI_CALL_COMPLETE)
efc_node_post_event(node,
EFC_EVT_NODE_DEL_TGT_COMPLETE, NULL);
} else if (node->init && node->targ) {
efc_log_info(node->efc,
"[%s] delete (I+T) WWPN %s WWNN %s\n",
node->display_name, node->wwpn, node->wwnn);
efc_node_transition(node, __efc_d_wait_del_ini_tgt,
NULL);
if (node->nport->enable_tgt)
rc = efc->tt.scsi_del_node(efc, node,
EFC_SCSI_INITIATOR_DELETED);
if (rc == EFC_SCSI_CALL_COMPLETE)
efc_node_post_event(node,
EFC_EVT_NODE_DEL_INI_COMPLETE, NULL);
/* assume no wait needed */
rc = EFC_SCSI_CALL_COMPLETE;
if (node->nport->enable_ini)
rc = efc->tt.scsi_del_node(efc, node,
EFC_SCSI_TARGET_DELETED);
if (rc == EFC_SCSI_CALL_COMPLETE)
efc_node_post_event(node,
EFC_EVT_NODE_DEL_TGT_COMPLETE, NULL);
}
/* we've initiated the upcalls as needed, now kick off the node
* detach to precipitate the aborting of outstanding exchanges
* associated with said node
*
* Beware: if we've made upcall(s), we've already transitioned
* to a new state by the time we execute this.
* consider doing this before the upcalls?
*/
if (node->attached) {
/* issue hw node free; don't care if succeeds right
* away or sometime later, will check node->attached
* later in shutdown process
*/
rc = efc_cmd_node_detach(efc, &node->rnode);
if (rc < 0)
node_printf(node,
"Failed freeing HW node, rc=%d\n",
rc);
}
/* if neither initiator nor target, proceed to cleanup */
if (!node->init && !node->targ) {
/*
* node has either been detached or is in
* the process of being detached,
* call common node's initiate cleanup function
*/
efc_node_initiate_cleanup(node);
}
break;
}
case EFC_EVT_ALL_CHILD_NODES_FREE:
/* Ignore, this can happen if an ELS is
* aborted while in a delay/retry state
*/
break;
default:
__efc_d_common(__func__, ctx, evt, arg);
}
}
void
__efc_d_wait_loop(struct efc_sm_ctx *ctx,
enum efc_sm_event evt, void *arg)
{
struct efc_node *node = ctx->app;
efc_node_evt_set(ctx, evt, __func__);
node_sm_trace();
switch (evt) {
case EFC_EVT_ENTER:
efc_node_hold_frames(node);
break;
case EFC_EVT_EXIT:
efc_node_accept_frames(node);
break;
case EFC_EVT_DOMAIN_ATTACH_OK: {
/* send PLOGI automatically if initiator */
efc_node_init_device(node, true);
break;
}
default:
__efc_d_common(__func__, ctx, evt, arg);
}
}
void
efc_send_ls_acc_after_attach(struct efc_node *node,
struct fc_frame_header *hdr,
enum efc_node_send_ls_acc ls)
{
u16 ox_id = be16_to_cpu(hdr->fh_ox_id);
/* Save the OX_ID for sending LS_ACC sometime later */
WARN_ON(node->send_ls_acc != EFC_NODE_SEND_LS_ACC_NONE);
node->ls_acc_oxid = ox_id;
node->send_ls_acc = ls;
node->ls_acc_did = ntoh24(hdr->fh_d_id);
}
void
efc_process_prli_payload(struct efc_node *node, void *prli)
{
struct {
struct fc_els_prli prli;
struct fc_els_spp sp;
} *pp;
pp = prli;
node->init = (pp->sp.spp_flags & FCP_SPPF_INIT_FCN) != 0;
node->targ = (pp->sp.spp_flags & FCP_SPPF_TARG_FCN) != 0;
}
void
__efc_d_wait_plogi_acc_cmpl(struct efc_sm_ctx *ctx,
enum efc_sm_event evt, void *arg)
{
struct efc_node *node = ctx->app;
efc_node_evt_set(ctx, evt, __func__);
node_sm_trace();
switch (evt) {
case EFC_EVT_ENTER:
efc_node_hold_frames(node);
break;
case EFC_EVT_EXIT:
efc_node_accept_frames(node);
break;
case EFC_EVT_SRRS_ELS_CMPL_FAIL:
WARN_ON(!node->els_cmpl_cnt);
node->els_cmpl_cnt--;
node->shutdown_reason = EFC_NODE_SHUTDOWN_DEFAULT;
efc_node_transition(node, __efc_d_initiate_shutdown, NULL);
break;
case EFC_EVT_SRRS_ELS_CMPL_OK: /* PLOGI ACC completions */
WARN_ON(!node->els_cmpl_cnt);
node->els_cmpl_cnt--;
efc_node_transition(node, __efc_d_port_logged_in, NULL);
break;
default:
__efc_d_common(__func__, ctx, evt, arg);
}
}
void
__efc_d_wait_logo_rsp(struct efc_sm_ctx *ctx,
enum efc_sm_event evt, void *arg)
{
struct efc_node *node = ctx->app;
efc_node_evt_set(ctx, evt, __func__);
node_sm_trace();
switch (evt) {
case EFC_EVT_ENTER:
efc_node_hold_frames(node);
break;
case EFC_EVT_EXIT:
efc_node_accept_frames(node);
break;
case EFC_EVT_SRRS_ELS_REQ_OK:
case EFC_EVT_SRRS_ELS_REQ_RJT:
case EFC_EVT_SRRS_ELS_REQ_FAIL:
/* LOGO response received, sent shutdown */
if (efc_node_check_els_req(ctx, evt, arg, ELS_LOGO,
__efc_d_common, __func__))
return;
WARN_ON(!node->els_req_cnt);
node->els_req_cnt--;
node_printf(node,
"LOGO sent (evt=%s), shutdown node\n",
efc_sm_event_name(evt));
/* sm: / post explicit logout */
efc_node_post_event(node, EFC_EVT_SHUTDOWN_EXPLICIT_LOGO,
NULL);
break;
default:
__efc_d_common(__func__, ctx, evt, arg);
}
}
void
efc_node_init_device(struct efc_node *node, bool send_plogi)
{
node->send_plogi = send_plogi;
if ((node->efc->nodedb_mask & EFC_NODEDB_PAUSE_NEW_NODES) &&
(node->rnode.fc_id != FC_FID_DOM_MGR)) {
node->nodedb_state = __efc_d_init;
efc_node_transition(node, __efc_node_paused, NULL);
} else {
efc_node_transition(node, __efc_d_init, NULL);
}
}
static void
efc_d_check_plogi_topology(struct efc_node *node, u32 d_id)
{
switch (node->nport->topology) {
case EFC_NPORT_TOPO_P2P:
/* we're not attached and nport is p2p,
* need to attach
*/
efc_domain_attach(node->nport->domain, d_id);
efc_node_transition(node, __efc_d_wait_domain_attach, NULL);
break;
case EFC_NPORT_TOPO_FABRIC:
/* we're not attached and nport is fabric, domain
* attach should have already been requested as part
* of the fabric state machine, wait for it
*/
efc_node_transition(node, __efc_d_wait_domain_attach, NULL);
break;
case EFC_NPORT_TOPO_UNKNOWN:
/* Two possibilities:
* 1. received a PLOGI before our FLOGI has completed
* (possible since completion comes in on another
* CQ), thus we don't know what we're connected to
* yet; transition to a state to wait for the
* fabric node to tell us;
* 2. PLOGI received before link went down and we
* haven't performed domain attach yet.
* Note: we cannot distinguish between 1. and 2.
* so have to assume PLOGI
* was received after link back up.
*/
node_printf(node, "received PLOGI, unknown topology did=0x%x\n",
d_id);
efc_node_transition(node, __efc_d_wait_topology_notify, NULL);
break;
default:
node_printf(node, "received PLOGI, unexpected topology %d\n",
node->nport->topology);
}
}
void
__efc_d_init(struct efc_sm_ctx *ctx, enum efc_sm_event evt, void *arg)
{
struct efc_node_cb *cbdata = arg;
struct efc_node *node = ctx->app;
efc_node_evt_set(ctx, evt, __func__);
node_sm_trace();
/*
* This state is entered when a node is instantiated,
* either having been discovered from a name services query,
* or having received a PLOGI/FLOGI.
*/
switch (evt) {
case EFC_EVT_ENTER:
if (!node->send_plogi)
break;
/* only send if we have initiator capability,
* and domain is attached
*/
if (node->nport->enable_ini &&
node->nport->domain->attached) {
efc_send_plogi(node);
efc_node_transition(node, __efc_d_wait_plogi_rsp, NULL);
} else {
node_printf(node, "not sending plogi nport.ini=%d,",
node->nport->enable_ini);
node_printf(node, "domain attached=%d\n",
node->nport->domain->attached);
}
break;
case EFC_EVT_PLOGI_RCVD: {
/* T, or I+T */
struct fc_frame_header *hdr = cbdata->header->dma.virt;
int rc;
efc_node_save_sparms(node, cbdata->payload->dma.virt);
efc_send_ls_acc_after_attach(node,
cbdata->header->dma.virt,
EFC_NODE_SEND_LS_ACC_PLOGI);
/* domain not attached; several possibilities: */
if (!node->nport->domain->attached) {
efc_d_check_plogi_topology(node, ntoh24(hdr->fh_d_id));
break;
}
/* domain already attached */
rc = efc_node_attach(node);
efc_node_transition(node, __efc_d_wait_node_attach, NULL);
if (rc < 0)
efc_node_post_event(node, EFC_EVT_NODE_ATTACH_FAIL, NULL);
break;
}
case EFC_EVT_FDISC_RCVD: {
__efc_d_common(__func__, ctx, evt, arg);
break;
}
case EFC_EVT_FLOGI_RCVD: {
struct fc_frame_header *hdr = cbdata->header->dma.virt;
u32 d_id = ntoh24(hdr->fh_d_id);
/* sm: / save sparams, send FLOGI acc */
memcpy(node->nport->domain->flogi_service_params,
cbdata->payload->dma.virt,
sizeof(struct fc_els_flogi));
/* send FC LS_ACC response, override s_id */
efc_fabric_set_topology(node, EFC_NPORT_TOPO_P2P);
efc_send_flogi_p2p_acc(node, be16_to_cpu(hdr->fh_ox_id), d_id);
if (efc_p2p_setup(node->nport)) {
node_printf(node, "p2p failed, shutting down node\n");
efc_node_post_event(node, EFC_EVT_SHUTDOWN, NULL);
break;
}
efc_node_transition(node, __efc_p2p_wait_flogi_acc_cmpl, NULL);
break;
}
case EFC_EVT_LOGO_RCVD: {
struct fc_frame_header *hdr = cbdata->header->dma.virt;
if (!node->nport->domain->attached) {
/* most likely a frame left over from before a link
* down; drop and
* shut node down w/ "explicit logout" so pending
* frames are processed
*/
node_printf(node, "%s domain not attached, dropping\n",
efc_sm_event_name(evt));
efc_node_post_event(node,
EFC_EVT_SHUTDOWN_EXPLICIT_LOGO, NULL);
break;
}
efc_send_logo_acc(node, be16_to_cpu(hdr->fh_ox_id));
efc_node_transition(node, __efc_d_wait_logo_acc_cmpl, NULL);
break;
}
case EFC_EVT_PRLI_RCVD:
case EFC_EVT_PRLO_RCVD:
case EFC_EVT_PDISC_RCVD:
case EFC_EVT_ADISC_RCVD:
case EFC_EVT_RSCN_RCVD: {
struct fc_frame_header *hdr = cbdata->header->dma.virt;
if (!node->nport->domain->attached) {
/* most likely a frame left over from before a link
* down; drop and shut node down w/ "explicit logout"
* so pending frames are processed
*/
node_printf(node, "%s domain not attached, dropping\n",
efc_sm_event_name(evt));
efc_node_post_event(node,
EFC_EVT_SHUTDOWN_EXPLICIT_LOGO,
NULL);
break;
}
node_printf(node, "%s received, sending reject\n",
efc_sm_event_name(evt));
efc_send_ls_rjt(node, be16_to_cpu(hdr->fh_ox_id),
ELS_RJT_UNAB, ELS_EXPL_PLOGI_REQD, 0);
break;
}
case EFC_EVT_FCP_CMD_RCVD: {
/* note: problem, we're now expecting an ELS REQ completion
* from both the LOGO and PLOGI
*/
if (!node->nport->domain->attached) {
/* most likely a frame left over from before a
* link down; drop and
* shut node down w/ "explicit logout" so pending
* frames are processed
*/
node_printf(node, "%s domain not attached, dropping\n",
efc_sm_event_name(evt));
efc_node_post_event(node,
EFC_EVT_SHUTDOWN_EXPLICIT_LOGO,
NULL);
break;
}
/* Send LOGO */
node_printf(node, "FCP_CMND received, send LOGO\n");
if (efc_send_logo(node)) {
/*
* failed to send LOGO, go ahead and cleanup node
* anyways
*/
node_printf(node, "Failed to send LOGO\n");
efc_node_post_event(node,
EFC_EVT_SHUTDOWN_EXPLICIT_LOGO,
NULL);
} else {
/* sent LOGO, wait for response */
efc_node_transition(node,
__efc_d_wait_logo_rsp, NULL);
}
break;
}
case EFC_EVT_DOMAIN_ATTACH_OK:
/* don't care about domain_attach_ok */
break;
default:
__efc_d_common(__func__, ctx, evt, arg);
}
}
void
__efc_d_wait_plogi_rsp(struct efc_sm_ctx *ctx,
enum efc_sm_event evt, void *arg)
{
int rc;
struct efc_node_cb *cbdata = arg;
struct efc_node *node = ctx->app;
efc_node_evt_set(ctx, evt, __func__);
node_sm_trace();
switch (evt) {
case EFC_EVT_PLOGI_RCVD: {
/* T, or I+T */
/* received PLOGI with svc parms, go ahead and attach node
* when PLOGI that was sent ultimately completes, it'll be a
* no-op
*
* If there is an outstanding PLOGI sent, can we set a flag
* to indicate that we don't want to retry it if it times out?
*/
efc_node_save_sparms(node, cbdata->payload->dma.virt);
efc_send_ls_acc_after_attach(node,
cbdata->header->dma.virt,
EFC_NODE_SEND_LS_ACC_PLOGI);
/* sm: domain->attached / efc_node_attach */
rc = efc_node_attach(node);
efc_node_transition(node, __efc_d_wait_node_attach, NULL);
if (rc < 0)
efc_node_post_event(node,
EFC_EVT_NODE_ATTACH_FAIL, NULL);
break;
}
case EFC_EVT_PRLI_RCVD:
/* I, or I+T */
/* sent PLOGI and before completion was seen, received the
* PRLI from the remote node (WCQEs and RCQEs come in on
* different queues and order of processing cannot be assumed)
* Save OXID so PRLI can be sent after the attach and continue
* to wait for PLOGI response
*/
efc_process_prli_payload(node, cbdata->payload->dma.virt);
efc_send_ls_acc_after_attach(node,
cbdata->header->dma.virt,
EFC_NODE_SEND_LS_ACC_PRLI);
efc_node_transition(node, __efc_d_wait_plogi_rsp_recvd_prli,
NULL);
break;
case EFC_EVT_LOGO_RCVD: /* why don't we do a shutdown here?? */
case EFC_EVT_PRLO_RCVD:
case EFC_EVT_PDISC_RCVD:
case EFC_EVT_FDISC_RCVD:
case EFC_EVT_ADISC_RCVD:
case EFC_EVT_RSCN_RCVD:
case EFC_EVT_SCR_RCVD: {
struct fc_frame_header *hdr = cbdata->header->dma.virt;
node_printf(node, "%s received, sending reject\n",
efc_sm_event_name(evt));
efc_send_ls_rjt(node, be16_to_cpu(hdr->fh_ox_id),
ELS_RJT_UNAB, ELS_EXPL_PLOGI_REQD, 0);
break;
}
case EFC_EVT_SRRS_ELS_REQ_OK: /* PLOGI response received */
/* Completion from PLOGI sent */
if (efc_node_check_els_req(ctx, evt, arg, ELS_PLOGI,
__efc_d_common, __func__))
return;
WARN_ON(!node->els_req_cnt);
node->els_req_cnt--;
/* sm: / save sparams, efc_node_attach */
efc_node_save_sparms(node, cbdata->els_rsp.virt);
rc = efc_node_attach(node);
efc_node_transition(node, __efc_d_wait_node_attach, NULL);
if (rc < 0)
efc_node_post_event(node,
EFC_EVT_NODE_ATTACH_FAIL, NULL);
break;
case EFC_EVT_SRRS_ELS_REQ_FAIL: /* PLOGI response received */
/* PLOGI failed, shutdown the node */
if (efc_node_check_els_req(ctx, evt, arg, ELS_PLOGI,
__efc_d_common, __func__))
return;
WARN_ON(!node->els_req_cnt);
node->els_req_cnt--;
efc_node_post_event(node, EFC_EVT_SHUTDOWN, NULL);
break;
case EFC_EVT_SRRS_ELS_REQ_RJT:
/* Our PLOGI was rejected, this is ok in some cases */
if (efc_node_check_els_req(ctx, evt, arg, ELS_PLOGI,
__efc_d_common, __func__))
return;
WARN_ON(!node->els_req_cnt);
node->els_req_cnt--;
break;
case EFC_EVT_FCP_CMD_RCVD: {
/* not logged in yet and outstanding PLOGI so don't send LOGO,
* just drop
*/
node_printf(node, "FCP_CMND received, drop\n");
break;
}
default:
__efc_d_common(__func__, ctx, evt, arg);
}
}
void
__efc_d_wait_plogi_rsp_recvd_prli(struct efc_sm_ctx *ctx,
enum efc_sm_event evt, void *arg)
{
int rc;
struct efc_node_cb *cbdata = arg;
struct efc_node *node = ctx->app;
efc_node_evt_set(ctx, evt, __func__);
node_sm_trace();
switch (evt) {
case EFC_EVT_ENTER:
/*
* Since we've received a PRLI, we have a port login and will
* just need to wait for the PLOGI response to do the node
* attach and then we can send the LS_ACC for the PRLI. If,
* during this time, we receive FCP_CMNDs (which is possible
* since we've already sent a PRLI and our peer may have
* accepted). At this time, we are not waiting on any other
* unsolicited frames to continue with the login process. Thus,
* it will not hurt to hold frames here.
*/
efc_node_hold_frames(node);
break;
case EFC_EVT_EXIT:
efc_node_accept_frames(node);
break;
case EFC_EVT_SRRS_ELS_REQ_OK: /* PLOGI response received */
/* Completion from PLOGI sent */
if (efc_node_check_els_req(ctx, evt, arg, ELS_PLOGI,
__efc_d_common, __func__))
return;
WARN_ON(!node->els_req_cnt);
node->els_req_cnt--;
/* sm: / save sparams, efc_node_attach */
efc_node_save_sparms(node, cbdata->els_rsp.virt);
rc = efc_node_attach(node);
efc_node_transition(node, __efc_d_wait_node_attach, NULL);
if (rc < 0)
efc_node_post_event(node, EFC_EVT_NODE_ATTACH_FAIL,
NULL);
break;
case EFC_EVT_SRRS_ELS_REQ_FAIL: /* PLOGI response received */
case EFC_EVT_SRRS_ELS_REQ_RJT:
/* PLOGI failed, shutdown the node */
if (efc_node_check_els_req(ctx, evt, arg, ELS_PLOGI,
__efc_d_common, __func__))
return;
WARN_ON(!node->els_req_cnt);
node->els_req_cnt--;
efc_node_post_event(node, EFC_EVT_SHUTDOWN, NULL);
break;
default:
__efc_d_common(__func__, ctx, evt, arg);
}
}
void
__efc_d_wait_domain_attach(struct efc_sm_ctx *ctx,
enum efc_sm_event evt, void *arg)
{
int rc;
struct efc_node *node = ctx->app;
efc_node_evt_set(ctx, evt, __func__);
node_sm_trace();
switch (evt) {
case EFC_EVT_ENTER:
efc_node_hold_frames(node);
break;
case EFC_EVT_EXIT:
efc_node_accept_frames(node);
break;
case EFC_EVT_DOMAIN_ATTACH_OK:
WARN_ON(!node->nport->domain->attached);
/* sm: / efc_node_attach */
rc = efc_node_attach(node);
efc_node_transition(node, __efc_d_wait_node_attach, NULL);
if (rc < 0)
efc_node_post_event(node, EFC_EVT_NODE_ATTACH_FAIL,
NULL);
break;
default:
__efc_d_common(__func__, ctx, evt, arg);
}
}
void
__efc_d_wait_topology_notify(struct efc_sm_ctx *ctx,
enum efc_sm_event evt, void *arg)
{
int rc;
struct efc_node *node = ctx->app;
efc_node_evt_set(ctx, evt, __func__);
node_sm_trace();
switch (evt) {
case EFC_EVT_ENTER:
efc_node_hold_frames(node);
break;
case EFC_EVT_EXIT:
efc_node_accept_frames(node);
break;
case EFC_EVT_NPORT_TOPOLOGY_NOTIFY: {
enum efc_nport_topology *topology = arg;
WARN_ON(node->nport->domain->attached);
WARN_ON(node->send_ls_acc != EFC_NODE_SEND_LS_ACC_PLOGI);
node_printf(node, "topology notification, topology=%d\n",
*topology);
/* At the time the PLOGI was received, the topology was unknown,
* so we didn't know which node would perform the domain attach:
* 1. The node from which the PLOGI was sent (p2p) or
* 2. The node to which the FLOGI was sent (fabric).
*/
if (*topology == EFC_NPORT_TOPO_P2P) {
/* if this is p2p, need to attach to the domain using
* the d_id from the PLOGI received
*/
efc_domain_attach(node->nport->domain,
node->ls_acc_did);
}
/* else, if this is fabric, the domain attach
* should be performed by the fabric node (node sending FLOGI);
* just wait for attach to complete
*/
efc_node_transition(node, __efc_d_wait_domain_attach, NULL);
break;
}
case EFC_EVT_DOMAIN_ATTACH_OK:
WARN_ON(!node->nport->domain->attached);
node_printf(node, "domain attach ok\n");
/* sm: / efc_node_attach */
rc = efc_node_attach(node);
efc_node_transition(node, __efc_d_wait_node_attach, NULL);
if (rc < 0)
efc_node_post_event(node,
EFC_EVT_NODE_ATTACH_FAIL, NULL);
break;
default:
__efc_d_common(__func__, ctx, evt, arg);
}
}
void
__efc_d_wait_node_attach(struct efc_sm_ctx *ctx,
enum efc_sm_event evt, void *arg)
{
struct efc_node *node = ctx->app;
efc_node_evt_set(ctx, evt, __func__);
node_sm_trace();
switch (evt) {
case EFC_EVT_ENTER:
efc_node_hold_frames(node);
break;
case EFC_EVT_EXIT:
efc_node_accept_frames(node);
break;
case EFC_EVT_NODE_ATTACH_OK:
node->attached = true;
switch (node->send_ls_acc) {
case EFC_NODE_SEND_LS_ACC_PLOGI: {
/* sm: send_plogi_acc is set / send PLOGI acc */
/* Normal case for T, or I+T */
efc_send_plogi_acc(node, node->ls_acc_oxid);
efc_node_transition(node, __efc_d_wait_plogi_acc_cmpl,
NULL);
node->send_ls_acc = EFC_NODE_SEND_LS_ACC_NONE;
node->ls_acc_io = NULL;
break;
}
case EFC_NODE_SEND_LS_ACC_PRLI: {
efc_d_send_prli_rsp(node, node->ls_acc_oxid);
node->send_ls_acc = EFC_NODE_SEND_LS_ACC_NONE;
node->ls_acc_io = NULL;
break;
}
case EFC_NODE_SEND_LS_ACC_NONE:
default:
/* Normal case for I */
/* sm: send_plogi_acc is not set / send PLOGI acc */
efc_node_transition(node,
__efc_d_port_logged_in, NULL);
break;
}
break;
case EFC_EVT_NODE_ATTACH_FAIL:
/* node attach failed, shutdown the node */
node->attached = false;
node_printf(node, "node attach failed\n");
node->shutdown_reason = EFC_NODE_SHUTDOWN_DEFAULT;
efc_node_transition(node, __efc_d_initiate_shutdown, NULL);
break;
/* Handle shutdown events */
case EFC_EVT_SHUTDOWN:
node_printf(node, "%s received\n", efc_sm_event_name(evt));
node->shutdown_reason = EFC_NODE_SHUTDOWN_DEFAULT;
efc_node_transition(node, __efc_d_wait_attach_evt_shutdown,
NULL);
break;
case EFC_EVT_SHUTDOWN_EXPLICIT_LOGO:
node_printf(node, "%s received\n", efc_sm_event_name(evt));
node->shutdown_reason = EFC_NODE_SHUTDOWN_EXPLICIT_LOGO;
efc_node_transition(node, __efc_d_wait_attach_evt_shutdown,
NULL);
break;
case EFC_EVT_SHUTDOWN_IMPLICIT_LOGO:
node_printf(node, "%s received\n", efc_sm_event_name(evt));
node->shutdown_reason = EFC_NODE_SHUTDOWN_IMPLICIT_LOGO;
efc_node_transition(node,
__efc_d_wait_attach_evt_shutdown, NULL);
break;
default:
__efc_d_common(__func__, ctx, evt, arg);
}
}
void
__efc_d_wait_attach_evt_shutdown(struct efc_sm_ctx *ctx,
enum efc_sm_event evt, void *arg)
{
struct efc_node *node = ctx->app;
efc_node_evt_set(ctx, evt, __func__);
node_sm_trace();
switch (evt) {
case EFC_EVT_ENTER:
efc_node_hold_frames(node);
break;
case EFC_EVT_EXIT:
efc_node_accept_frames(node);
break;
/* wait for any of these attach events and then shutdown */
case EFC_EVT_NODE_ATTACH_OK:
node->attached = true;
node_printf(node, "Attach evt=%s, proceed to shutdown\n",
efc_sm_event_name(evt));
efc_node_transition(node, __efc_d_initiate_shutdown, NULL);
break;
case EFC_EVT_NODE_ATTACH_FAIL:
/* node attach failed, shutdown the node */
node->attached = false;
node_printf(node, "Attach evt=%s, proceed to shutdown\n",
efc_sm_event_name(evt));
efc_node_transition(node, __efc_d_initiate_shutdown, NULL);
break;
/* ignore shutdown events as we're already in shutdown path */
case EFC_EVT_SHUTDOWN:
/* have default shutdown event take precedence */
node->shutdown_reason = EFC_NODE_SHUTDOWN_DEFAULT;
fallthrough;
case EFC_EVT_SHUTDOWN_EXPLICIT_LOGO:
case EFC_EVT_SHUTDOWN_IMPLICIT_LOGO:
node_printf(node, "%s received\n", efc_sm_event_name(evt));
break;
default:
__efc_d_common(__func__, ctx, evt, arg);
}
}
void
__efc_d_port_logged_in(struct efc_sm_ctx *ctx,
enum efc_sm_event evt, void *arg)
{
struct efc_node_cb *cbdata = arg;
struct efc_node *node = ctx->app;
efc_node_evt_set(ctx, evt, __func__);
node_sm_trace();
switch (evt) {
case EFC_EVT_ENTER:
/* Normal case for I or I+T */
if (node->nport->enable_ini &&
!(node->rnode.fc_id != FC_FID_DOM_MGR)) {
/* sm: if enable_ini / send PRLI */
efc_send_prli(node);
/* can now expect ELS_REQ_OK/FAIL/RJT */
}
break;
case EFC_EVT_FCP_CMD_RCVD: {
break;
}
case EFC_EVT_PRLI_RCVD: {
/* Normal case for T or I+T */
struct fc_frame_header *hdr = cbdata->header->dma.virt;
struct {
struct fc_els_prli prli;
struct fc_els_spp sp;
} *pp;
pp = cbdata->payload->dma.virt;
if (pp->sp.spp_type != FC_TYPE_FCP) {
/*Only FCP is supported*/
efc_send_ls_rjt(node, be16_to_cpu(hdr->fh_ox_id),
ELS_RJT_UNAB, ELS_EXPL_UNSUPR, 0);
break;
}
efc_process_prli_payload(node, cbdata->payload->dma.virt);
efc_d_send_prli_rsp(node, be16_to_cpu(hdr->fh_ox_id));
break;
}
case EFC_EVT_NODE_SESS_REG_OK:
if (node->send_ls_acc == EFC_NODE_SEND_LS_ACC_PRLI)
efc_send_prli_acc(node, node->ls_acc_oxid);
node->send_ls_acc = EFC_NODE_SEND_LS_ACC_NONE;
efc_node_transition(node, __efc_d_device_ready, NULL);
break;
case EFC_EVT_NODE_SESS_REG_FAIL:
efc_send_ls_rjt(node, node->ls_acc_oxid, ELS_RJT_UNAB,
ELS_EXPL_UNSUPR, 0);
node->send_ls_acc = EFC_NODE_SEND_LS_ACC_NONE;
break;
case EFC_EVT_SRRS_ELS_REQ_OK: { /* PRLI response */
/* Normal case for I or I+T */
if (efc_node_check_els_req(ctx, evt, arg, ELS_PRLI,
__efc_d_common, __func__))
return;
WARN_ON(!node->els_req_cnt);
node->els_req_cnt--;
/* sm: / process PRLI payload */
efc_process_prli_payload(node, cbdata->els_rsp.virt);
efc_node_transition(node, __efc_d_device_ready, NULL);
break;
}
case EFC_EVT_SRRS_ELS_REQ_FAIL: { /* PRLI response failed */
/* I, I+T, assume some link failure, shutdown node */
if (efc_node_check_els_req(ctx, evt, arg, ELS_PRLI,
__efc_d_common, __func__))
return;
WARN_ON(!node->els_req_cnt);
node->els_req_cnt--;
efc_node_post_event(node, EFC_EVT_SHUTDOWN, NULL);
break;
}
case EFC_EVT_SRRS_ELS_REQ_RJT: {
/* PRLI rejected by remote
* Normal for I, I+T (connected to an I)
* Node doesn't want to be a target, stay here and wait for a
* PRLI from the remote node
* if it really wants to connect to us as target
*/
if (efc_node_check_els_req(ctx, evt, arg, ELS_PRLI,
__efc_d_common, __func__))
return;
WARN_ON(!node->els_req_cnt);
node->els_req_cnt--;
break;
}
case EFC_EVT_SRRS_ELS_CMPL_OK: {
/* Normal T, I+T, target-server rejected the process login */
/* This would be received only in the case where we sent
* LS_RJT for the PRLI, so
* do nothing. (note: as T only we could shutdown the node)
*/
WARN_ON(!node->els_cmpl_cnt);
node->els_cmpl_cnt--;
break;
}
case EFC_EVT_PLOGI_RCVD: {
/*sm: / save sparams, set send_plogi_acc,
*post implicit logout
* Save plogi parameters
*/
efc_node_save_sparms(node, cbdata->payload->dma.virt);
efc_send_ls_acc_after_attach(node,
cbdata->header->dma.virt,
EFC_NODE_SEND_LS_ACC_PLOGI);
/* Restart node attach with new service parameters,
* and send ACC
*/
efc_node_post_event(node, EFC_EVT_SHUTDOWN_IMPLICIT_LOGO,
NULL);
break;
}
case EFC_EVT_LOGO_RCVD: {
/* I, T, I+T */
struct fc_frame_header *hdr = cbdata->header->dma.virt;
node_printf(node, "%s received attached=%d\n",
efc_sm_event_name(evt),
node->attached);
/* sm: / send LOGO acc */
efc_send_logo_acc(node, be16_to_cpu(hdr->fh_ox_id));
efc_node_transition(node, __efc_d_wait_logo_acc_cmpl, NULL);
break;
}
default:
__efc_d_common(__func__, ctx, evt, arg);
}
}
void
__efc_d_wait_logo_acc_cmpl(struct efc_sm_ctx *ctx,
enum efc_sm_event evt, void *arg)
{
struct efc_node *node = ctx->app;
efc_node_evt_set(ctx, evt, __func__);
node_sm_trace();
switch (evt) {
case EFC_EVT_ENTER:
efc_node_hold_frames(node);
break;
case EFC_EVT_EXIT:
efc_node_accept_frames(node);
break;
case EFC_EVT_SRRS_ELS_CMPL_OK:
case EFC_EVT_SRRS_ELS_CMPL_FAIL:
/* sm: / post explicit logout */
WARN_ON(!node->els_cmpl_cnt);
node->els_cmpl_cnt--;
efc_node_post_event(node,
EFC_EVT_SHUTDOWN_EXPLICIT_LOGO, NULL);
break;
default:
__efc_d_common(__func__, ctx, evt, arg);
}
}
void
__efc_d_device_ready(struct efc_sm_ctx *ctx,
enum efc_sm_event evt, void *arg)
{
struct efc_node_cb *cbdata = arg;
struct efc_node *node = ctx->app;
struct efc *efc = node->efc;
efc_node_evt_set(ctx, evt, __func__);
if (evt != EFC_EVT_FCP_CMD_RCVD)
node_sm_trace();
switch (evt) {
case EFC_EVT_ENTER:
node->fcp_enabled = true;
if (node->targ) {
efc_log_info(efc,
"[%s] found (target) WWPN %s WWNN %s\n",
node->display_name,
node->wwpn, node->wwnn);
if (node->nport->enable_ini)
efc->tt.scsi_new_node(efc, node);
}
break;
case EFC_EVT_EXIT:
node->fcp_enabled = false;
break;
case EFC_EVT_PLOGI_RCVD: {
/* sm: / save sparams, set send_plogi_acc, post implicit
* logout
* Save plogi parameters
*/
efc_node_save_sparms(node, cbdata->payload->dma.virt);
efc_send_ls_acc_after_attach(node,
cbdata->header->dma.virt,
EFC_NODE_SEND_LS_ACC_PLOGI);
/*
* Restart node attach with new service parameters,
* and send ACC
*/
efc_node_post_event(node,
EFC_EVT_SHUTDOWN_IMPLICIT_LOGO, NULL);
break;
}
case EFC_EVT_PRLI_RCVD: {
/* T, I+T: remote initiator is slow to get started */
struct fc_frame_header *hdr = cbdata->header->dma.virt;
struct {
struct fc_els_prli prli;
struct fc_els_spp sp;
} *pp;
pp = cbdata->payload->dma.virt;
if (pp->sp.spp_type != FC_TYPE_FCP) {
/*Only FCP is supported*/
efc_send_ls_rjt(node, be16_to_cpu(hdr->fh_ox_id),
ELS_RJT_UNAB, ELS_EXPL_UNSUPR, 0);
break;
}
efc_process_prli_payload(node, cbdata->payload->dma.virt);
efc_send_prli_acc(node, be16_to_cpu(hdr->fh_ox_id));
break;
}
case EFC_EVT_PRLO_RCVD: {
struct fc_frame_header *hdr = cbdata->header->dma.virt;
/* sm: / send PRLO acc */
efc_send_prlo_acc(node, be16_to_cpu(hdr->fh_ox_id));
/* need implicit logout? */
break;
}
case EFC_EVT_LOGO_RCVD: {
struct fc_frame_header *hdr = cbdata->header->dma.virt;
node_printf(node, "%s received attached=%d\n",
efc_sm_event_name(evt), node->attached);
/* sm: / send LOGO acc */
efc_send_logo_acc(node, be16_to_cpu(hdr->fh_ox_id));
efc_node_transition(node, __efc_d_wait_logo_acc_cmpl, NULL);
break;
}
case EFC_EVT_ADISC_RCVD: {
struct fc_frame_header *hdr = cbdata->header->dma.virt;
/* sm: / send ADISC acc */
efc_send_adisc_acc(node, be16_to_cpu(hdr->fh_ox_id));
break;
}
case EFC_EVT_ABTS_RCVD:
/* sm: / process ABTS */
efc_log_err(efc, "Unexpected event:%s\n",
efc_sm_event_name(evt));
break;
case EFC_EVT_NODE_ACTIVE_IO_LIST_EMPTY:
break;
case EFC_EVT_NODE_REFOUND:
break;
case EFC_EVT_NODE_MISSING:
if (node->nport->enable_rscn)
efc_node_transition(node, __efc_d_device_gone, NULL);
break;
case EFC_EVT_SRRS_ELS_CMPL_OK:
/* T, or I+T, PRLI accept completed ok */
WARN_ON(!node->els_cmpl_cnt);
node->els_cmpl_cnt--;
break;
case EFC_EVT_SRRS_ELS_CMPL_FAIL:
/* T, or I+T, PRLI accept failed to complete */
WARN_ON(!node->els_cmpl_cnt);
node->els_cmpl_cnt--;
node_printf(node, "Failed to send PRLI LS_ACC\n");
break;
default:
__efc_d_common(__func__, ctx, evt, arg);
}
}
void
__efc_d_device_gone(struct efc_sm_ctx *ctx,
enum efc_sm_event evt, void *arg)
{
struct efc_node_cb *cbdata = arg;
struct efc_node *node = ctx->app;
struct efc *efc = node->efc;
efc_node_evt_set(ctx, evt, __func__);
node_sm_trace();
switch (evt) {
case EFC_EVT_ENTER: {
int rc = EFC_SCSI_CALL_COMPLETE;
int rc_2 = EFC_SCSI_CALL_COMPLETE;
static const char * const labels[] = {
"none", "initiator", "target", "initiator+target"
};
efc_log_info(efc, "[%s] missing (%s) WWPN %s WWNN %s\n",
node->display_name,
labels[(node->targ << 1) | (node->init)],
node->wwpn, node->wwnn);
switch (efc_node_get_enable(node)) {
case EFC_NODE_ENABLE_T_TO_T:
case EFC_NODE_ENABLE_I_TO_T:
case EFC_NODE_ENABLE_IT_TO_T:
rc = efc->tt.scsi_del_node(efc, node,
EFC_SCSI_TARGET_MISSING);
break;
case EFC_NODE_ENABLE_T_TO_I:
case EFC_NODE_ENABLE_I_TO_I:
case EFC_NODE_ENABLE_IT_TO_I:
rc = efc->tt.scsi_del_node(efc, node,
EFC_SCSI_INITIATOR_MISSING);
break;
case EFC_NODE_ENABLE_T_TO_IT:
rc = efc->tt.scsi_del_node(efc, node,
EFC_SCSI_INITIATOR_MISSING);
break;
case EFC_NODE_ENABLE_I_TO_IT:
rc = efc->tt.scsi_del_node(efc, node,
EFC_SCSI_TARGET_MISSING);
break;
case EFC_NODE_ENABLE_IT_TO_IT:
rc = efc->tt.scsi_del_node(efc, node,
EFC_SCSI_INITIATOR_MISSING);
rc_2 = efc->tt.scsi_del_node(efc, node,
EFC_SCSI_TARGET_MISSING);
break;
default:
rc = EFC_SCSI_CALL_COMPLETE;
break;
}
if (rc == EFC_SCSI_CALL_COMPLETE &&
rc_2 == EFC_SCSI_CALL_COMPLETE)
efc_node_post_event(node, EFC_EVT_SHUTDOWN, NULL);
break;
}
case EFC_EVT_NODE_REFOUND:
/* two approaches, reauthenticate with PLOGI/PRLI, or ADISC */
/* reauthenticate with PLOGI/PRLI */
/* efc_node_transition(node, __efc_d_discovered, NULL); */
/* reauthenticate with ADISC */
/* sm: / send ADISC */
efc_send_adisc(node);
efc_node_transition(node, __efc_d_wait_adisc_rsp, NULL);
break;
case EFC_EVT_PLOGI_RCVD: {
/* sm: / save sparams, set send_plogi_acc, post implicit
* logout
* Save plogi parameters
*/
efc_node_save_sparms(node, cbdata->payload->dma.virt);
efc_send_ls_acc_after_attach(node,
cbdata->header->dma.virt,
EFC_NODE_SEND_LS_ACC_PLOGI);
/*
* Restart node attach with new service parameters, and send
* ACC
*/
efc_node_post_event(node, EFC_EVT_SHUTDOWN_IMPLICIT_LOGO,
NULL);
break;
}
case EFC_EVT_FCP_CMD_RCVD: {
/* most likely a stale frame (received prior to link down),
* if attempt to send LOGO, will probably timeout and eat
* up 20s; thus, drop FCP_CMND
*/
node_printf(node, "FCP_CMND received, drop\n");
break;
}
case EFC_EVT_LOGO_RCVD: {
/* I, T, I+T */
struct fc_frame_header *hdr = cbdata->header->dma.virt;
node_printf(node, "%s received attached=%d\n",
efc_sm_event_name(evt), node->attached);
/* sm: / send LOGO acc */
efc_send_logo_acc(node, be16_to_cpu(hdr->fh_ox_id));
efc_node_transition(node, __efc_d_wait_logo_acc_cmpl, NULL);
break;
}
default:
__efc_d_common(__func__, ctx, evt, arg);
}
}
void
__efc_d_wait_adisc_rsp(struct efc_sm_ctx *ctx,
enum efc_sm_event evt, void *arg)
{
struct efc_node_cb *cbdata = arg;
struct efc_node *node = ctx->app;
efc_node_evt_set(ctx, evt, __func__);
node_sm_trace();
switch (evt) {
case EFC_EVT_SRRS_ELS_REQ_OK:
if (efc_node_check_els_req(ctx, evt, arg, ELS_ADISC,
__efc_d_common, __func__))
return;
WARN_ON(!node->els_req_cnt);
node->els_req_cnt--;
efc_node_transition(node, __efc_d_device_ready, NULL);
break;
case EFC_EVT_SRRS_ELS_REQ_RJT:
/* received an LS_RJT, in this case, send shutdown
* (explicit logo) event which will unregister the node,
* and start over with PLOGI
*/
if (efc_node_check_els_req(ctx, evt, arg, ELS_ADISC,
__efc_d_common, __func__))
return;
WARN_ON(!node->els_req_cnt);
node->els_req_cnt--;
/* sm: / post explicit logout */
efc_node_post_event(node,
EFC_EVT_SHUTDOWN_EXPLICIT_LOGO,
NULL);
break;
case EFC_EVT_LOGO_RCVD: {
/* In this case, we have the equivalent of an LS_RJT for
* the ADISC, so we need to abort the ADISC, and re-login
* with PLOGI
*/
/* sm: / request abort, send LOGO acc */
struct fc_frame_header *hdr = cbdata->header->dma.virt;
node_printf(node, "%s received attached=%d\n",
efc_sm_event_name(evt), node->attached);
efc_send_logo_acc(node, be16_to_cpu(hdr->fh_ox_id));
efc_node_transition(node, __efc_d_wait_logo_acc_cmpl, NULL);
break;
}
default:
__efc_d_common(__func__, ctx, evt, arg);
}
}
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