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sys/dev/ocs_fc/ocs_device.c
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/*- | |||||
* Copyright (c) 2017 Broadcom. All rights reserved. | |||||
* The term "Broadcom" refers to Broadcom Limited and/or its subsidiaries. | |||||
* | |||||
* Redistribution and use in source and binary forms, with or without | |||||
* modification, are permitted provided that the following conditions are met: | |||||
* | |||||
* 1. Redistributions of source code must retain the above copyright notice, | |||||
* this list of conditions and the following disclaimer. | |||||
* | |||||
* 2. Redistributions in binary form must reproduce the above copyright notice, | |||||
* this list of conditions and the following disclaimer in the documentation | |||||
* and/or other materials provided with the distribution. | |||||
* | |||||
* 3. Neither the name of the copyright holder nor the names of its contributors | |||||
* may be used to endorse or promote products derived from this software | |||||
* without specific prior written permission. | |||||
* | |||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |||||
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |||||
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |||||
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |||||
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |||||
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |||||
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |||||
* POSSIBILITY OF SUCH DAMAGE. | |||||
* | |||||
*/ | |||||
/** | |||||
* @file | |||||
* Implement remote device state machine for target and initiator. | |||||
*/ | |||||
/*! | |||||
@defgroup device_sm Node State Machine: Remote Device States | |||||
*/ | |||||
#include "ocs.h" | |||||
#include "ocs_device.h" | |||||
#include "ocs_fabric.h" | |||||
#include "ocs_els.h" | |||||
static void *__ocs_d_common(const char *funcname, ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg); | |||||
static void *__ocs_d_wait_del_node(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg); | |||||
static void *__ocs_d_wait_del_ini_tgt(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg); | |||||
static int32_t ocs_process_abts(ocs_io_t *io, fc_header_t *hdr); | |||||
/** | |||||
* @ingroup device_sm | |||||
* @brief Send response to PRLI. | |||||
* | |||||
* <h3 class="desc">Description</h3> | |||||
* For device nodes, this function sends a PRLI response. | |||||
* | |||||
* @param io Pointer to a SCSI IO object. | |||||
* @param ox_id OX_ID of PRLI | |||||
* | |||||
* @return Returns None. | |||||
*/ | |||||
void | |||||
ocs_d_send_prli_rsp(ocs_io_t *io, uint16_t ox_id) | |||||
{ | |||||
ocs_t *ocs = io->ocs; | |||||
ocs_node_t *node = io->node; | |||||
/* If the back-end doesn't support the fc-type, we send an LS_RJT */ | |||||
if (ocs->fc_type != node->fc_type) { | |||||
node_printf(node, "PRLI rejected by target-server, fc-type not supported\n"); | |||||
ocs_send_ls_rjt(io, ox_id, FC_REASON_UNABLE_TO_PERFORM, | |||||
FC_EXPL_REQUEST_NOT_SUPPORTED, 0, NULL, NULL); | |||||
node->shutdown_reason = OCS_NODE_SHUTDOWN_DEFAULT; | |||||
ocs_node_transition(node, __ocs_d_initiate_shutdown, NULL); | |||||
} | |||||
/* If the back-end doesn't want to talk to this initiator, we send an LS_RJT */ | |||||
if (node->sport->enable_tgt && (ocs_scsi_validate_initiator(node) == 0)) { | |||||
node_printf(node, "PRLI rejected by target-server\n"); | |||||
ocs_send_ls_rjt(io, ox_id, FC_REASON_UNABLE_TO_PERFORM, | |||||
FC_EXPL_NO_ADDITIONAL, 0, NULL, NULL); | |||||
node->shutdown_reason = OCS_NODE_SHUTDOWN_DEFAULT; | |||||
ocs_node_transition(node, __ocs_d_initiate_shutdown, NULL); | |||||
} else { | |||||
/*sm: process PRLI payload, send PRLI acc */ | |||||
ocs_send_prli_acc(io, ox_id, ocs->fc_type, NULL, NULL); | |||||
/* Immediately go to ready state to avoid window where we're | |||||
* waiting for the PRLI LS_ACC to complete while holding FCP_CMNDs | |||||
*/ | |||||
ocs_node_transition(node, __ocs_d_device_ready, NULL); | |||||
} | |||||
} | |||||
/** | |||||
* @ingroup device_sm | |||||
* @brief Device node state machine: Initiate node shutdown | |||||
* | |||||
* @param ctx Remote node state machine context. | |||||
* @param evt Event to process. | |||||
* @param arg Per event optional argument. | |||||
* | |||||
* @return Returns NULL. | |||||
*/ | |||||
void * | |||||
__ocs_d_initiate_shutdown(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg) | |||||
{ | |||||
std_node_state_decl(); | |||||
node_sm_trace(); | |||||
switch(evt) { | |||||
case OCS_EVT_ENTER: { | |||||
int32_t rc = OCS_SCSI_CALL_COMPLETE; /* assume no wait needed */ | |||||
ocs_scsi_io_alloc_disable(node); | |||||
/* make necessary delete upcall(s) */ | |||||
if (node->init && !node->targ) { | |||||
ocs_log_debug(node->ocs, | |||||
"[%s] delete (initiator) WWPN %s WWNN %s\n", | |||||
node->display_name, node->wwpn, node->wwnn); | |||||
ocs_node_transition(node, __ocs_d_wait_del_node, NULL); | |||||
if (node->sport->enable_tgt) { | |||||
rc = ocs_scsi_del_initiator(node, | |||||
OCS_SCSI_INITIATOR_DELETED); | |||||
} | |||||
if (rc == OCS_SCSI_CALL_COMPLETE) { | |||||
ocs_node_post_event(node, | |||||
OCS_EVT_NODE_DEL_INI_COMPLETE, NULL); | |||||
} | |||||
} else if (node->targ && !node->init) { | |||||
ocs_log_debug(node->ocs, | |||||
"[%s] delete (target) WWPN %s WWNN %s\n", | |||||
node->display_name, node->wwpn, node->wwnn); | |||||
ocs_node_transition(node, __ocs_d_wait_del_node, NULL); | |||||
if (node->sport->enable_ini) { | |||||
rc = ocs_scsi_del_target(node, | |||||
OCS_SCSI_TARGET_DELETED); | |||||
} | |||||
if (rc == OCS_SCSI_CALL_COMPLETE) { | |||||
ocs_node_post_event(node, | |||||
OCS_EVT_NODE_DEL_TGT_COMPLETE, NULL); | |||||
} | |||||
} else if (node->init && node->targ) { | |||||
ocs_log_debug(node->ocs, | |||||
"[%s] delete (initiator+target) WWPN %s WWNN %s\n", | |||||
node->display_name, node->wwpn, node->wwnn); | |||||
ocs_node_transition(node, __ocs_d_wait_del_ini_tgt, NULL); | |||||
if (node->sport->enable_tgt) { | |||||
rc = ocs_scsi_del_initiator(node, | |||||
OCS_SCSI_INITIATOR_DELETED); | |||||
} | |||||
if (rc == OCS_SCSI_CALL_COMPLETE) { | |||||
ocs_node_post_event(node, | |||||
OCS_EVT_NODE_DEL_INI_COMPLETE, NULL); | |||||
} | |||||
rc = OCS_SCSI_CALL_COMPLETE; /* assume no wait needed */ | |||||
if (node->sport->enable_ini) { | |||||
rc = ocs_scsi_del_target(node, | |||||
OCS_SCSI_TARGET_DELETED); | |||||
} | |||||
if (rc == OCS_SCSI_CALL_COMPLETE) { | |||||
ocs_node_post_event(node, | |||||
OCS_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. | |||||
* TODO: 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 = ocs_hw_node_detach(&ocs->hw, &node->rnode); | |||||
if (node->rnode.free_group) { | |||||
ocs_remote_node_group_free(node->node_group); | |||||
node->node_group = NULL; | |||||
node->rnode.free_group = FALSE; | |||||
} | |||||
if (rc != OCS_HW_RTN_SUCCESS && | |||||
rc != OCS_HW_RTN_SUCCESS_SYNC) { | |||||
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. | |||||
*/ | |||||
ocs_node_initiate_cleanup(node); | |||||
} | |||||
break; | |||||
} | |||||
case OCS_EVT_ALL_CHILD_NODES_FREE: | |||||
/* Ignore, this can happen if an ELS is aborted, | |||||
* while in a delay/retry state */ | |||||
break; | |||||
default: | |||||
__ocs_d_common(__func__, ctx, evt, arg); | |||||
return NULL; | |||||
} | |||||
return NULL; | |||||
} | |||||
/** | |||||
* @ingroup device_sm | |||||
* @brief Device node state machine: Common device event handler. | |||||
* | |||||
* <h3 class="desc">Description</h3> | |||||
* For device nodes, this event handler manages default and common events. | |||||
* | |||||
* @param funcname Function name text. | |||||
* @param ctx Remote node state machine context. | |||||
* @param evt Event to process. | |||||
* @param arg Per event optional argument. | |||||
* | |||||
* @return Returns NULL. | |||||
*/ | |||||
static void * | |||||
__ocs_d_common(const char *funcname, ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg) | |||||
{ | |||||
ocs_node_t *node = NULL; | |||||
ocs_t *ocs = NULL; | |||||
ocs_assert(ctx, NULL); | |||||
node = ctx->app; | |||||
ocs_assert(node, NULL); | |||||
ocs = node->ocs; | |||||
ocs_assert(ocs, NULL); | |||||
switch(evt) { | |||||
/* Handle shutdown events */ | |||||
case OCS_EVT_SHUTDOWN: | |||||
ocs_log_debug(ocs, "[%s] %-20s %-20s\n", node->display_name, funcname, ocs_sm_event_name(evt)); | |||||
node->shutdown_reason = OCS_NODE_SHUTDOWN_DEFAULT; | |||||
ocs_node_transition(node, __ocs_d_initiate_shutdown, NULL); | |||||
break; | |||||
case OCS_EVT_SHUTDOWN_EXPLICIT_LOGO: | |||||
ocs_log_debug(ocs, "[%s] %-20s %-20s\n", node->display_name, funcname, ocs_sm_event_name(evt)); | |||||
node->shutdown_reason = OCS_NODE_SHUTDOWN_EXPLICIT_LOGO; | |||||
ocs_node_transition(node, __ocs_d_initiate_shutdown, NULL); | |||||
break; | |||||
case OCS_EVT_SHUTDOWN_IMPLICIT_LOGO: | |||||
ocs_log_debug(ocs, "[%s] %-20s %-20s\n", node->display_name, funcname, ocs_sm_event_name(evt)); | |||||
node->shutdown_reason = OCS_NODE_SHUTDOWN_IMPLICIT_LOGO; | |||||
ocs_node_transition(node, __ocs_d_initiate_shutdown, NULL); | |||||
break; | |||||
default: | |||||
/* call default event handler common to all nodes */ | |||||
__ocs_node_common(funcname, ctx, evt, arg); | |||||
break; | |||||
} | |||||
return NULL; | |||||
} | |||||
/** | |||||
* @ingroup device_sm | |||||
* @brief Device node state machine: Wait for a domain-attach completion in loop topology. | |||||
* | |||||
* <h3 class="desc">Description</h3> | |||||
* State waits for a domain-attached completion while in loop topology. | |||||
* | |||||
* @param ctx Remote node state machine context. | |||||
* @param evt Event to process. | |||||
* @param arg Per event optional argument. | |||||
* | |||||
* @return Returns NULL. | |||||
*/ | |||||
void * | |||||
__ocs_d_wait_loop(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg) | |||||
{ | |||||
std_node_state_decl(); | |||||
node_sm_trace(); | |||||
switch(evt) { | |||||
case OCS_EVT_ENTER: | |||||
ocs_node_hold_frames(node); | |||||
break; | |||||
case OCS_EVT_EXIT: | |||||
ocs_node_accept_frames(node); | |||||
break; | |||||
case OCS_EVT_DOMAIN_ATTACH_OK: { | |||||
/* send PLOGI automatically if initiator */ | |||||
ocs_node_init_device(node, TRUE); | |||||
break; | |||||
} | |||||
default: | |||||
__ocs_d_common(__func__, ctx, evt, arg); | |||||
return NULL; | |||||
} | |||||
return NULL; | |||||
} | |||||
/** | |||||
* @ingroup device_sm | |||||
* @brief state: wait for node resume event | |||||
* | |||||
* State is entered when a node is in I+T mode and sends a delete initiator/target | |||||
* call to the target-server/initiator-client and needs to wait for that work to complete. | |||||
* | |||||
* @param ctx Remote node state machine context. | |||||
* @param evt Event to process. | |||||
* @param arg per event optional argument | |||||
* | |||||
* @return returns NULL | |||||
*/ | |||||
void * | |||||
__ocs_d_wait_del_ini_tgt(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg) | |||||
{ | |||||
std_node_state_decl(); | |||||
node_sm_trace(); | |||||
switch(evt) { | |||||
case OCS_EVT_ENTER: | |||||
ocs_node_hold_frames(node); | |||||
/* Fall through */ | |||||
case OCS_EVT_NODE_ACTIVE_IO_LIST_EMPTY: | |||||
case OCS_EVT_ALL_CHILD_NODES_FREE: | |||||
/* These are expected events. */ | |||||
break; | |||||
case OCS_EVT_NODE_DEL_INI_COMPLETE: | |||||
case OCS_EVT_NODE_DEL_TGT_COMPLETE: | |||||
ocs_node_transition(node, __ocs_d_wait_del_node, NULL); | |||||
break; | |||||
case OCS_EVT_EXIT: | |||||
ocs_node_accept_frames(node); | |||||
break; | |||||
case OCS_EVT_SRRS_ELS_REQ_FAIL: | |||||
/* Can happen as ELS IO IO's complete */ | |||||
ocs_assert(node->els_req_cnt, NULL); | |||||
node->els_req_cnt--; | |||||
break; | |||||
/* ignore shutdown events as we're already in shutdown path */ | |||||
case OCS_EVT_SHUTDOWN: | |||||
/* have default shutdown event take precedence */ | |||||
node->shutdown_reason = OCS_NODE_SHUTDOWN_DEFAULT; | |||||
/* fall through */ | |||||
case OCS_EVT_SHUTDOWN_EXPLICIT_LOGO: | |||||
case OCS_EVT_SHUTDOWN_IMPLICIT_LOGO: | |||||
node_printf(node, "%s received\n", ocs_sm_event_name(evt)); | |||||
break; | |||||
case OCS_EVT_DOMAIN_ATTACH_OK: | |||||
/* don't care about domain_attach_ok */ | |||||
break; | |||||
default: | |||||
__ocs_d_common(__func__, ctx, evt, arg); | |||||
return NULL; | |||||
} | |||||
return NULL; | |||||
} | |||||
/** | |||||
* @ingroup device_sm | |||||
* @brief state: Wait for node resume event. | |||||
* | |||||
* 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. | |||||
* | |||||
* @param ctx Remote node state machine context. | |||||
* @param evt Event to process. | |||||
* @param arg Per event optional argument. | |||||
* | |||||
* @return Returns NULL. | |||||
*/ | |||||
void * | |||||
__ocs_d_wait_del_node(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg) | |||||
{ | |||||
std_node_state_decl(); | |||||
node_sm_trace(); | |||||
switch(evt) { | |||||
case OCS_EVT_ENTER: | |||||
ocs_node_hold_frames(node); | |||||
/* Fall through */ | |||||
case OCS_EVT_NODE_ACTIVE_IO_LIST_EMPTY: | |||||
case OCS_EVT_ALL_CHILD_NODES_FREE: | |||||
/* These are expected events. */ | |||||
break; | |||||
case OCS_EVT_NODE_DEL_INI_COMPLETE: | |||||
case OCS_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 | |||||
*/ | |||||
ocs_node_initiate_cleanup(node); | |||||
break; | |||||
case OCS_EVT_EXIT: | |||||
ocs_node_accept_frames(node); | |||||
break; | |||||
case OCS_EVT_SRRS_ELS_REQ_FAIL: | |||||
/* Can happen as ELS IO IO's complete */ | |||||
ocs_assert(node->els_req_cnt, NULL); | |||||
node->els_req_cnt--; | |||||
break; | |||||
/* ignore shutdown events as we're already in shutdown path */ | |||||
case OCS_EVT_SHUTDOWN: | |||||
/* have default shutdown event take precedence */ | |||||
node->shutdown_reason = OCS_NODE_SHUTDOWN_DEFAULT; | |||||
/* fall through */ | |||||
case OCS_EVT_SHUTDOWN_EXPLICIT_LOGO: | |||||
case OCS_EVT_SHUTDOWN_IMPLICIT_LOGO: | |||||
node_printf(node, "%s received\n", ocs_sm_event_name(evt)); | |||||
break; | |||||
case OCS_EVT_DOMAIN_ATTACH_OK: | |||||
/* don't care about domain_attach_ok */ | |||||
break; | |||||
default: | |||||
__ocs_d_common(__func__, ctx, evt, arg); | |||||
return NULL; | |||||
} | |||||
return NULL; | |||||
} | |||||
/** | |||||
* @brief Save the OX_ID for sending LS_ACC sometime later. | |||||
* | |||||
* <h3 class="desc">Description</h3> | |||||
* When deferring the response to an ELS request, the OX_ID of the request | |||||
* is saved using this function. | |||||
* | |||||
* @param io Pointer to a SCSI IO object. | |||||
* @param hdr Pointer to the FC header. | |||||
* @param ls Defines the type of ELS to send: LS_ACC, LS_ACC for PLOGI; | |||||
* or LSS_ACC for PRLI. | |||||
* | |||||
* @return None. | |||||
*/ | |||||
void | |||||
ocs_send_ls_acc_after_attach(ocs_io_t *io, fc_header_t *hdr, ocs_node_send_ls_acc_e ls) | |||||
{ | |||||
ocs_node_t *node = io->node; | |||||
uint16_t ox_id = ocs_be16toh(hdr->ox_id); | |||||
ocs_assert(node->send_ls_acc == OCS_NODE_SEND_LS_ACC_NONE); | |||||
node->ls_acc_oxid = ox_id; | |||||
node->send_ls_acc = ls; | |||||
node->ls_acc_io = io; | |||||
node->ls_acc_did = fc_be24toh(hdr->d_id); | |||||
} | |||||
/** | |||||
* @brief Process the PRLI payload. | |||||
* | |||||
* <h3 class="desc">Description</h3> | |||||
* The PRLI payload is processed; the initiator/target capabilities of the | |||||
* remote node are extracted and saved in the node object. | |||||
* | |||||
* @param node Pointer to the node object. | |||||
* @param prli Pointer to the PRLI payload. | |||||
* | |||||
* @return None. | |||||
*/ | |||||
void | |||||
ocs_process_prli_payload(ocs_node_t *node, fc_prli_payload_t *prli) | |||||
{ | |||||
node->init = (ocs_be16toh(prli->service_params) & FC_PRLI_INITIATOR_FUNCTION) != 0; | |||||
node->targ = (ocs_be16toh(prli->service_params) & FC_PRLI_TARGET_FUNCTION) != 0; | |||||
node->fcp2device = (ocs_be16toh(prli->service_params) & FC_PRLI_RETRY) != 0; | |||||
node->fc_type = prli->type; | |||||
} | |||||
/** | |||||
* @brief Process the ABTS. | |||||
* | |||||
* <h3 class="desc">Description</h3> | |||||
* Common code to process a received ABTS. If an active IO can be found | |||||
* that matches the OX_ID of the ABTS request, a call is made to the | |||||
* backend. Otherwise, a BA_ACC is returned to the initiator. | |||||
* | |||||
* @param io Pointer to a SCSI IO object. | |||||
* @param hdr Pointer to the FC header. | |||||
* | |||||
* @return Returns 0 on success, or a negative error value on failure. | |||||
*/ | |||||
static int32_t | |||||
ocs_process_abts(ocs_io_t *io, fc_header_t *hdr) | |||||
{ | |||||
ocs_node_t *node = io->node; | |||||
ocs_t *ocs = node->ocs; | |||||
uint16_t ox_id = ocs_be16toh(hdr->ox_id); | |||||
uint16_t rx_id = ocs_be16toh(hdr->rx_id); | |||||
ocs_io_t *abortio; | |||||
abortio = ocs_io_find_tgt_io(ocs, node, ox_id, rx_id); | |||||
/* If an IO was found, attempt to take a reference on it */ | |||||
if (abortio != NULL && (ocs_ref_get_unless_zero(&abortio->ref) != 0)) { | |||||
/* Got a reference on the IO. Hold it until backend is notified below */ | |||||
node_printf(node, "Abort request: ox_id [%04x] rx_id [%04x]\n", | |||||
ox_id, rx_id); | |||||
/* | |||||
* Save the ox_id for the ABTS as the init_task_tag in our manufactured | |||||
* TMF IO object | |||||
*/ | |||||
io->display_name = "abts"; | |||||
io->init_task_tag = ox_id; | |||||
/* don't set tgt_task_tag, don't want to confuse with XRI */ | |||||
/* | |||||
* Save the rx_id from the ABTS as it is needed for the BLS response, | |||||
* regardless of the IO context's rx_id | |||||
*/ | |||||
io->abort_rx_id = rx_id; | |||||
/* Call target server command abort */ | |||||
io->tmf_cmd = OCS_SCSI_TMF_ABORT_TASK; | |||||
ocs_scsi_recv_tmf(io, 0, OCS_SCSI_TMF_ABORT_TASK, abortio, 0); | |||||
/* | |||||
* Backend will have taken an additional reference on the IO if needed; | |||||
* done with current reference. | |||||
*/ | |||||
ocs_ref_put(&abortio->ref); /* ocs_ref_get(): same function */ | |||||
} else { | |||||
/* | |||||
* Either IO was not found or it has been freed between finding it | |||||
* and attempting to get the reference, | |||||
*/ | |||||
node_printf(node, "Abort request: ox_id [%04x], IO not found (exists=%d)\n", | |||||
ox_id, (abortio != NULL)); | |||||
/* Send a BA_ACC */ | |||||
ocs_bls_send_acc_hdr(io, hdr); | |||||
} | |||||
return 0; | |||||
} | |||||
/** | |||||
* @ingroup device_sm | |||||
* @brief Device node state machine: Wait for the PLOGI accept to complete. | |||||
* | |||||
* @param ctx Remote node state machine context. | |||||
* @param evt Event to process. | |||||
* @param arg Per event optional argument. | |||||
* | |||||
* @return Returns NULL. | |||||
*/ | |||||
void * | |||||
__ocs_d_wait_plogi_acc_cmpl(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg) | |||||
{ | |||||
std_node_state_decl(); | |||||
node_sm_trace(); | |||||
switch(evt) { | |||||
case OCS_EVT_ENTER: | |||||
ocs_node_hold_frames(node); | |||||
break; | |||||
case OCS_EVT_EXIT: | |||||
ocs_node_accept_frames(node); | |||||
break; | |||||
case OCS_EVT_SRRS_ELS_CMPL_FAIL: | |||||
ocs_assert(node->els_cmpl_cnt, NULL); | |||||
node->els_cmpl_cnt--; | |||||
node->shutdown_reason = OCS_NODE_SHUTDOWN_DEFAULT; | |||||
ocs_node_transition(node, __ocs_d_initiate_shutdown, NULL); | |||||
break; | |||||
case OCS_EVT_SRRS_ELS_CMPL_OK: /* PLOGI ACC completions */ | |||||
ocs_assert(node->els_cmpl_cnt, NULL); | |||||
node->els_cmpl_cnt--; | |||||
ocs_node_transition(node, __ocs_d_port_logged_in, NULL); | |||||
break; | |||||
default: | |||||
__ocs_d_common(__func__, ctx, evt, arg); | |||||
return NULL; | |||||
} | |||||
return NULL; | |||||
} | |||||
/** | |||||
* @ingroup device_sm | |||||
* @brief Device node state machine: Wait for the LOGO response. | |||||
* | |||||
* @param ctx Remote node state machine context. | |||||
* @param evt Event to process. | |||||
* @param arg Per event optional argument. | |||||
* | |||||
* @return Returns NULL. | |||||
*/ | |||||
void * | |||||
__ocs_d_wait_logo_rsp(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg) | |||||
{ | |||||
std_node_state_decl(); | |||||
node_sm_trace(); | |||||
switch(evt) { | |||||
case OCS_EVT_ENTER: | |||||
/* TODO: may want to remove this; | |||||
* if we'll want to know about PLOGI */ | |||||
ocs_node_hold_frames(node); | |||||
break; | |||||
case OCS_EVT_EXIT: | |||||
ocs_node_accept_frames(node); | |||||
break; | |||||
case OCS_EVT_SRRS_ELS_REQ_OK: | |||||
case OCS_EVT_SRRS_ELS_REQ_RJT: | |||||
case OCS_EVT_SRRS_ELS_REQ_FAIL: | |||||
/* LOGO response received, sent shutdown */ | |||||
if (node_check_els_req(ctx, evt, arg, FC_ELS_CMD_LOGO, __ocs_d_common, __func__)) { | |||||
return NULL; | |||||
} | |||||
ocs_assert(node->els_req_cnt, NULL); | |||||
node->els_req_cnt--; | |||||
node_printf(node, "LOGO sent (evt=%s), shutdown node\n", ocs_sm_event_name(evt)); | |||||
/* sm: post explicit logout */ | |||||
ocs_node_post_event(node, OCS_EVT_SHUTDOWN_EXPLICIT_LOGO, NULL); | |||||
break; | |||||
/* TODO: PLOGI: abort LOGO and process PLOGI? (SHUTDOWN_EXPLICIT/IMPLICIT_LOGO?) */ | |||||
default: | |||||
__ocs_d_common(__func__, ctx, evt, arg); | |||||
return NULL; | |||||
} | |||||
return NULL; | |||||
} | |||||
/** | |||||
* @ingroup device_sm | |||||
* @brief Device node state machine: Wait for the PRLO response. | |||||
* | |||||
* @param ctx Remote node state machine context. | |||||
* @param evt Event to process. | |||||
* @param arg Per event optional argument. | |||||
* | |||||
* @return Returns NULL. | |||||
*/ | |||||
void * | |||||
__ocs_d_wait_prlo_rsp(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg) | |||||
{ | |||||
std_node_state_decl(); | |||||
node_sm_trace(); | |||||
switch(evt) { | |||||
case OCS_EVT_ENTER: | |||||
ocs_node_hold_frames(node); | |||||
break; | |||||
case OCS_EVT_EXIT: | |||||
ocs_node_accept_frames(node); | |||||
break; | |||||
case OCS_EVT_SRRS_ELS_REQ_OK: | |||||
case OCS_EVT_SRRS_ELS_REQ_RJT: | |||||
case OCS_EVT_SRRS_ELS_REQ_FAIL: | |||||
if (node_check_els_req(ctx, evt, arg, FC_ELS_CMD_PRLO, __ocs_d_common, __func__)) { | |||||
return NULL; | |||||
} | |||||
ocs_assert(node->els_req_cnt, NULL); | |||||
node->els_req_cnt--; | |||||
node_printf(node, "PRLO sent (evt=%s)\n", ocs_sm_event_name(evt)); | |||||
ocs_node_transition(node, __ocs_d_port_logged_in, NULL); | |||||
break; | |||||
default: | |||||
__ocs_node_common(__func__, ctx, evt, arg); | |||||
return NULL; | |||||
} | |||||
return NULL; | |||||
} | |||||
/** | |||||
* @brief Initialize device node. | |||||
* | |||||
* Initialize device node. If a node is an initiator, then send a PLOGI and transition | |||||
* to __ocs_d_wait_plogi_rsp, otherwise transition to __ocs_d_init. | |||||
* | |||||
* @param node Pointer to the node object. | |||||
* @param send_plogi Boolean indicating to send PLOGI command or not. | |||||
* | |||||
* @return none | |||||
*/ | |||||
void | |||||
ocs_node_init_device(ocs_node_t *node, int send_plogi) | |||||
{ | |||||
node->send_plogi = send_plogi; | |||||
if ((node->ocs->nodedb_mask & OCS_NODEDB_PAUSE_NEW_NODES) && !FC_ADDR_IS_DOMAIN_CTRL(node->rnode.fc_id)) { | |||||
node->nodedb_state = __ocs_d_init; | |||||
ocs_node_transition(node, __ocs_node_paused, NULL); | |||||
} else { | |||||
ocs_node_transition(node, __ocs_d_init, NULL); | |||||
} | |||||
} | |||||
/** | |||||
* @ingroup device_sm | |||||
* @brief Device node state machine: Initial node state for an initiator or a target. | |||||
* | |||||
* <h3 class="desc">Description</h3> | |||||
* This state is entered when a node is instantiated, either having been | |||||
* discovered from a name services query, or having received a PLOGI/FLOGI. | |||||
* | |||||
* @param ctx Remote node state machine context. | |||||
* @param evt Event to process. | |||||
* @param arg Per event optional argument. | |||||
* - OCS_EVT_ENTER: (uint8_t *) - 1 to send a PLOGI on | |||||
* entry (initiator-only); 0 indicates a PLOGI is | |||||
* not sent on entry (initiator-only). Not applicable for a target. | |||||
* | |||||
* @return Returns NULL. | |||||
*/ | |||||
void * | |||||
__ocs_d_init(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg) | |||||
{ | |||||
int32_t rc; | |||||
ocs_node_cb_t *cbdata = arg; | |||||
std_node_state_decl(); | |||||
node_sm_trace(); | |||||
switch(evt) { | |||||
case OCS_EVT_ENTER: | |||||
/* check if we need to send PLOGI */ | |||||
if (node->send_plogi) { | |||||
/* only send if we have initiator capability, and domain is attached */ | |||||
if (node->sport->enable_ini && node->sport->domain->attached) { | |||||
ocs_send_plogi(node, OCS_FC_ELS_SEND_DEFAULT_TIMEOUT, | |||||
OCS_FC_ELS_DEFAULT_RETRIES, NULL, NULL); | |||||
ocs_node_transition(node, __ocs_d_wait_plogi_rsp, NULL); | |||||
} else { | |||||
node_printf(node, "not sending plogi sport.ini=%d, domain attached=%d\n", | |||||
node->sport->enable_ini, node->sport->domain->attached); | |||||
} | |||||
} | |||||
break; | |||||
case OCS_EVT_PLOGI_RCVD: { | |||||
/* T, or I+T */ | |||||
fc_header_t *hdr = cbdata->header->dma.virt; | |||||
uint32_t d_id = fc_be24toh(hdr->d_id); | |||||
ocs_node_save_sparms(node, cbdata->payload->dma.virt); | |||||
ocs_send_ls_acc_after_attach(cbdata->io, cbdata->header->dma.virt, OCS_NODE_SEND_LS_ACC_PLOGI); | |||||
/* domain already attached */ | |||||
if (node->sport->domain->attached) { | |||||
rc = ocs_node_attach(node); | |||||
ocs_node_transition(node, __ocs_d_wait_node_attach, NULL); | |||||
if (rc == OCS_HW_RTN_SUCCESS_SYNC) { | |||||
ocs_node_post_event(node, OCS_EVT_NODE_ATTACH_OK, NULL); | |||||
} | |||||
break; | |||||
} | |||||
/* domain not attached; several possibilities: */ | |||||
switch (node->sport->topology) { | |||||
case OCS_SPORT_TOPOLOGY_P2P: | |||||
/* we're not attached and sport is p2p, need to attach */ | |||||
ocs_domain_attach(node->sport->domain, d_id); | |||||
ocs_node_transition(node, __ocs_d_wait_domain_attach, NULL); | |||||
break; | |||||
case OCS_SPORT_TOPOLOGY_FABRIC: | |||||
/* we're not attached and sport is fabric, domain attach should have | |||||
* already been requested as part of the fabric state machine, wait for it | |||||
*/ | |||||
ocs_node_transition(node, __ocs_d_wait_domain_attach, NULL); | |||||
break; | |||||
case OCS_SPORT_TOPOLOGY_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, with unknown topology did=0x%x\n", d_id); | |||||
ocs_node_transition(node, __ocs_d_wait_topology_notify, NULL); | |||||
break; | |||||
default: | |||||
node_printf(node, "received PLOGI, with unexpectd topology %d\n", | |||||
node->sport->topology); | |||||
ocs_assert(FALSE, NULL); | |||||
break; | |||||
} | |||||
break; | |||||
} | |||||
case OCS_EVT_FDISC_RCVD: { | |||||
__ocs_d_common(__func__, ctx, evt, arg); | |||||
break; | |||||
} | |||||
case OCS_EVT_FLOGI_RCVD: { | |||||
fc_header_t *hdr = cbdata->header->dma.virt; | |||||
/* this better be coming from an NPort */ | |||||
ocs_assert(ocs_rnode_is_nport(cbdata->payload->dma.virt), NULL); | |||||
/* sm: save sparams, send FLOGI acc */ | |||||
ocs_domain_save_sparms(node->sport->domain, cbdata->payload->dma.virt); | |||||
/* send FC LS_ACC response, override s_id */ | |||||
ocs_fabric_set_topology(node, OCS_SPORT_TOPOLOGY_P2P); | |||||
ocs_send_flogi_p2p_acc(cbdata->io, ocs_be16toh(hdr->ox_id), fc_be24toh(hdr->d_id), NULL, NULL); | |||||
if (ocs_p2p_setup(node->sport)) { | |||||
node_printf(node, "p2p setup failed, shutting down node\n"); | |||||
ocs_node_post_event(node, OCS_EVT_SHUTDOWN, NULL); | |||||
} else { | |||||
ocs_node_transition(node, __ocs_p2p_wait_flogi_acc_cmpl, NULL); | |||||
} | |||||
break; | |||||
} | |||||
case OCS_EVT_LOGO_RCVD: { | |||||
fc_header_t *hdr = cbdata->header->dma.virt; | |||||
if (!node->sport->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", ocs_sm_event_name(evt)); | |||||
ocs_node_post_event(node, OCS_EVT_SHUTDOWN_EXPLICIT_LOGO, NULL); | |||||
break; | |||||
} | |||||
ocs_send_logo_acc(cbdata->io, ocs_be16toh(hdr->ox_id), NULL, NULL); | |||||
ocs_node_transition(node, __ocs_d_wait_logo_acc_cmpl, NULL); | |||||
break; | |||||
} | |||||
case OCS_EVT_PRLI_RCVD: | |||||
case OCS_EVT_PRLO_RCVD: | |||||
case OCS_EVT_PDISC_RCVD: | |||||
case OCS_EVT_ADISC_RCVD: | |||||
case OCS_EVT_RSCN_RCVD: { | |||||
fc_header_t *hdr = cbdata->header->dma.virt; | |||||
if (!node->sport->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", ocs_sm_event_name(evt)); | |||||
ocs_node_post_event(node, OCS_EVT_SHUTDOWN_EXPLICIT_LOGO, NULL); | |||||
break; | |||||
} | |||||
node_printf(node, "%s received, sending reject\n", ocs_sm_event_name(evt)); | |||||
ocs_send_ls_rjt(cbdata->io, ocs_be16toh(hdr->ox_id), | |||||
FC_REASON_UNABLE_TO_PERFORM, FC_EXPL_NPORT_LOGIN_REQUIRED, 0, | |||||
NULL, NULL); | |||||
break; | |||||
} | |||||
case OCS_EVT_FCP_CMD_RCVD: { | |||||
/* note: problem, we're now expecting an ELS REQ completion | |||||
* from both the LOGO and PLOGI */ | |||||
if (!node->sport->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", ocs_sm_event_name(evt)); | |||||
ocs_node_post_event(node, OCS_EVT_SHUTDOWN_EXPLICIT_LOGO, NULL); | |||||
break; | |||||
} | |||||
/* Send LOGO */ | |||||
node_printf(node, "FCP_CMND received, send LOGO\n"); | |||||
if (ocs_send_logo(node, OCS_FC_ELS_SEND_DEFAULT_TIMEOUT, 0, NULL, NULL) == NULL) { | |||||
/* failed to send LOGO, go ahead and cleanup node anyways */ | |||||
node_printf(node, "Failed to send LOGO\n"); | |||||
ocs_node_post_event(node, OCS_EVT_SHUTDOWN_EXPLICIT_LOGO, NULL); | |||||
} else { | |||||
/* sent LOGO, wait for response */ | |||||
ocs_node_transition(node, __ocs_d_wait_logo_rsp, NULL); | |||||
} | |||||
break; | |||||
} | |||||
case OCS_EVT_DOMAIN_ATTACH_OK: | |||||
/* don't care about domain_attach_ok */ | |||||
break; | |||||
default: | |||||
__ocs_d_common(__func__, ctx, evt, arg); | |||||
return NULL; | |||||
} | |||||
return NULL; | |||||
} | |||||
/** | |||||
* @ingroup device_sm | |||||
* @brief Device node state machine: Wait on a response for a sent PLOGI. | |||||
* | |||||
* <h3 class="desc">Description</h3> | |||||
* State is entered when an initiator-capable node has sent | |||||
* a PLOGI and is waiting for a response. | |||||
* | |||||
* @param ctx Remote node state machine context. | |||||
* @param evt Event to process. | |||||
* @param arg Per event optional argument. | |||||
* | |||||
* @return Returns NULL. | |||||
*/ | |||||
void * | |||||
__ocs_d_wait_plogi_rsp(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg) | |||||
{ | |||||
int32_t rc; | |||||
ocs_node_cb_t *cbdata = arg; | |||||
std_node_state_decl(); | |||||
node_sm_trace(); | |||||
switch(evt) { | |||||
case OCS_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 | |||||
*/ | |||||
/* TODO: 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? */ | |||||
ocs_node_save_sparms(node, cbdata->payload->dma.virt); | |||||
ocs_send_ls_acc_after_attach(cbdata->io, cbdata->header->dma.virt, OCS_NODE_SEND_LS_ACC_PLOGI); | |||||
/* sm: domain->attached / ocs_node_attach */ | |||||
rc = ocs_node_attach(node); | |||||
ocs_node_transition(node, __ocs_d_wait_node_attach, NULL); | |||||
if (rc == OCS_HW_RTN_SUCCESS_SYNC) { | |||||
ocs_node_post_event(node, OCS_EVT_NODE_ATTACH_OK, NULL); | |||||
} | |||||
break; | |||||
} | |||||
case OCS_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 | |||||
*/ | |||||
ocs_process_prli_payload(node, cbdata->payload->dma.virt); | |||||
if (ocs->fc_type == node->fc_type) { | |||||
ocs_send_ls_acc_after_attach(cbdata->io, cbdata->header->dma.virt, OCS_NODE_SEND_LS_ACC_PRLI); | |||||
ocs_node_transition(node, __ocs_d_wait_plogi_rsp_recvd_prli, NULL); | |||||
} else { | |||||
/* TODO this need to be looked at. What do we do here ? */ | |||||
} | |||||
break; | |||||
/* TODO this need to be looked at. we could very well be logged in */ | |||||
case OCS_EVT_LOGO_RCVD: /* why don't we do a shutdown here?? */ | |||||
case OCS_EVT_PRLO_RCVD: | |||||
case OCS_EVT_PDISC_RCVD: | |||||
case OCS_EVT_FDISC_RCVD: | |||||
case OCS_EVT_ADISC_RCVD: | |||||
case OCS_EVT_RSCN_RCVD: | |||||
case OCS_EVT_SCR_RCVD: { | |||||
fc_header_t *hdr = cbdata->header->dma.virt; | |||||
node_printf(node, "%s received, sending reject\n", ocs_sm_event_name(evt)); | |||||
ocs_send_ls_rjt(cbdata->io, ocs_be16toh(hdr->ox_id), | |||||
FC_REASON_UNABLE_TO_PERFORM, FC_EXPL_NPORT_LOGIN_REQUIRED, 0, | |||||
NULL, NULL); | |||||
break; | |||||
} | |||||
case OCS_EVT_SRRS_ELS_REQ_OK: /* PLOGI response received */ | |||||
/* Completion from PLOGI sent */ | |||||
if (node_check_els_req(ctx, evt, arg, FC_ELS_CMD_PLOGI, __ocs_d_common, __func__)) { | |||||
return NULL; | |||||
} | |||||
ocs_assert(node->els_req_cnt, NULL); | |||||
node->els_req_cnt--; | |||||
/* sm: save sparams, ocs_node_attach */ | |||||
ocs_node_save_sparms(node, cbdata->els->els_rsp.virt); | |||||
ocs_display_sparams(node->display_name, "plogi rcvd resp", 0, NULL, | |||||
((uint8_t*)cbdata->els->els_rsp.virt) + 4); | |||||
rc = ocs_node_attach(node); | |||||
ocs_node_transition(node, __ocs_d_wait_node_attach, NULL); | |||||
if (rc == OCS_HW_RTN_SUCCESS_SYNC) { | |||||
ocs_node_post_event(node, OCS_EVT_NODE_ATTACH_OK, NULL); | |||||
} | |||||
break; | |||||
case OCS_EVT_SRRS_ELS_REQ_FAIL: /* PLOGI response received */ | |||||
/* PLOGI failed, shutdown the node */ | |||||
if (node_check_els_req(ctx, evt, arg, FC_ELS_CMD_PLOGI, __ocs_d_common, __func__)) { | |||||
return NULL; | |||||
} | |||||
ocs_assert(node->els_req_cnt, NULL); | |||||
node->els_req_cnt--; | |||||
ocs_node_post_event(node, OCS_EVT_SHUTDOWN, NULL); | |||||
break; | |||||
case OCS_EVT_SRRS_ELS_REQ_RJT: /* Our PLOGI was rejected, this is ok in some cases */ | |||||
if (node_check_els_req(ctx, evt, arg, FC_ELS_CMD_PLOGI, __ocs_d_common, __func__)) { | |||||
return NULL; | |||||
} | |||||
ocs_assert(node->els_req_cnt, NULL); | |||||
node->els_req_cnt--; | |||||
break; | |||||
case OCS_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: | |||||
__ocs_d_common(__func__, ctx, evt, arg); | |||||
return NULL; | |||||
} | |||||
return NULL; | |||||
} | |||||
/** | |||||
* @ingroup device_sm | |||||
* @brief Device node state machine: Waiting on a response for a | |||||
* sent PLOGI. | |||||
* | |||||
* <h3 class="desc">Description</h3> | |||||
* State is entered when an initiator-capable node has sent | |||||
* a PLOGI and is waiting for a response. Before receiving the | |||||
* response, a PRLI was received, implying that the PLOGI was | |||||
* successful. | |||||
* | |||||
* @param ctx Remote node state machine context. | |||||
* @param evt Event to process. | |||||
* @param arg Per event optional argument. | |||||
* | |||||
* @return Returns NULL. | |||||
*/ | |||||
void * | |||||
__ocs_d_wait_plogi_rsp_recvd_prli(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg) | |||||
{ | |||||
int32_t rc; | |||||
ocs_node_cb_t *cbdata = arg; | |||||
std_node_state_decl(); | |||||
node_sm_trace(); | |||||
switch(evt) { | |||||
case OCS_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. | |||||
*/ | |||||
ocs_node_hold_frames(node); | |||||
break; | |||||
case OCS_EVT_EXIT: | |||||
ocs_node_accept_frames(node); | |||||
break; | |||||
case OCS_EVT_SRRS_ELS_REQ_OK: /* PLOGI response received */ | |||||
/* Completion from PLOGI sent */ | |||||
if (node_check_els_req(ctx, evt, arg, FC_ELS_CMD_PLOGI, __ocs_d_common, __func__)) { | |||||
return NULL; | |||||
} | |||||
ocs_assert(node->els_req_cnt, NULL); | |||||
node->els_req_cnt--; | |||||
/* sm: save sparams, ocs_node_attach */ | |||||
ocs_node_save_sparms(node, cbdata->els->els_rsp.virt); | |||||
ocs_display_sparams(node->display_name, "plogi rcvd resp", 0, NULL, | |||||
((uint8_t*)cbdata->els->els_rsp.virt) + 4); | |||||
rc = ocs_node_attach(node); | |||||
ocs_node_transition(node, __ocs_d_wait_node_attach, NULL); | |||||
if (rc == OCS_HW_RTN_SUCCESS_SYNC) { | |||||
ocs_node_post_event(node, OCS_EVT_NODE_ATTACH_OK, NULL); | |||||
} | |||||
break; | |||||
case OCS_EVT_SRRS_ELS_REQ_FAIL: /* PLOGI response received */ | |||||
case OCS_EVT_SRRS_ELS_REQ_RJT: | |||||
/* PLOGI failed, shutdown the node */ | |||||
if (node_check_els_req(ctx, evt, arg, FC_ELS_CMD_PLOGI, __ocs_d_common, __func__)) { | |||||
return NULL; | |||||
} | |||||
ocs_assert(node->els_req_cnt, NULL); | |||||
node->els_req_cnt--; | |||||
ocs_node_post_event(node, OCS_EVT_SHUTDOWN, NULL); | |||||
break; | |||||
default: | |||||
__ocs_d_common(__func__, ctx, evt, arg); | |||||
return NULL; | |||||
} | |||||
return NULL; | |||||
} | |||||
/** | |||||
* @ingroup device_sm | |||||
* @brief Device node state machine: Wait for a domain attach. | |||||
* | |||||
* <h3 class="desc">Description</h3> | |||||
* Waits for a domain-attach complete ok event. | |||||
* | |||||
* @param ctx Remote node state machine context. | |||||
* @param evt Event to process. | |||||
* @param arg Per event optional argument. | |||||
* | |||||
* @return Returns NULL. | |||||
*/ | |||||
void * | |||||
__ocs_d_wait_domain_attach(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg) | |||||
{ | |||||
int32_t rc; | |||||
std_node_state_decl(); | |||||
node_sm_trace(); | |||||
switch(evt) { | |||||
case OCS_EVT_ENTER: | |||||
ocs_node_hold_frames(node); | |||||
break; | |||||
case OCS_EVT_EXIT: | |||||
ocs_node_accept_frames(node); | |||||
break; | |||||
case OCS_EVT_DOMAIN_ATTACH_OK: | |||||
ocs_assert(node->sport->domain->attached, NULL); | |||||
/* sm: ocs_node_attach */ | |||||
rc = ocs_node_attach(node); | |||||
ocs_node_transition(node, __ocs_d_wait_node_attach, NULL); | |||||
if (rc == OCS_HW_RTN_SUCCESS_SYNC) { | |||||
ocs_node_post_event(node, OCS_EVT_NODE_ATTACH_OK, NULL); | |||||
} | |||||
break; | |||||
default: | |||||
__ocs_d_common(__func__, ctx, evt, arg); | |||||
return NULL; | |||||
} | |||||
return NULL; | |||||
} | |||||
/** | |||||
* @ingroup device_sm | |||||
* @brief Device node state machine: Wait for topology | |||||
* notification | |||||
* | |||||
* <h3 class="desc">Description</h3> | |||||
* Waits for topology notification from fabric node, then | |||||
* attaches domain and node. | |||||
* | |||||
* @param ctx Remote node state machine context. | |||||
* @param evt Event to process. | |||||
* @param arg Per event optional argument. | |||||
* | |||||
* @return Returns NULL. | |||||
*/ | |||||
void * | |||||
__ocs_d_wait_topology_notify(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg) | |||||
{ | |||||
int32_t rc; | |||||
std_node_state_decl(); | |||||
node_sm_trace(); | |||||
switch(evt) { | |||||
case OCS_EVT_ENTER: | |||||
ocs_node_hold_frames(node); | |||||
break; | |||||
case OCS_EVT_EXIT: | |||||
ocs_node_accept_frames(node); | |||||
break; | |||||
case OCS_EVT_SPORT_TOPOLOGY_NOTIFY: { | |||||
ocs_sport_topology_e topology = (ocs_sport_topology_e)arg; | |||||
ocs_assert(!node->sport->domain->attached, NULL); | |||||
ocs_assert(node->send_ls_acc == OCS_NODE_SEND_LS_ACC_PLOGI, NULL); | |||||
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 == OCS_SPORT_TOPOLOGY_P2P) { | |||||
/* if this is p2p, need to attach to the domain using the | |||||
* d_id from the PLOGI received | |||||
*/ | |||||
ocs_domain_attach(node->sport->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 | |||||
*/ | |||||
ocs_node_transition(node, __ocs_d_wait_domain_attach, NULL); | |||||
break; | |||||
} | |||||
case OCS_EVT_DOMAIN_ATTACH_OK: | |||||
ocs_assert(node->sport->domain->attached, NULL); | |||||
node_printf(node, "domain attach ok\n"); | |||||
/*sm: ocs_node_attach */ | |||||
rc = ocs_node_attach(node); | |||||
ocs_node_transition(node, __ocs_d_wait_node_attach, NULL); | |||||
if (rc == OCS_HW_RTN_SUCCESS_SYNC) { | |||||
ocs_node_post_event(node, OCS_EVT_NODE_ATTACH_OK, NULL); | |||||
} | |||||
break; | |||||
default: | |||||
__ocs_d_common(__func__, ctx, evt, arg); | |||||
return NULL; | |||||
} | |||||
return NULL; | |||||
} | |||||
/** | |||||
* @ingroup device_sm | |||||
* @brief Device node state machine: Wait for a node attach when found by a remote node. | |||||
* | |||||
* @param ctx Remote node state machine context. | |||||
* @param evt Event to process. | |||||
* @param arg Per event optional argument. | |||||
* | |||||
* @return Returns NULL. | |||||
*/ | |||||
void * | |||||
__ocs_d_wait_node_attach(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg) | |||||
{ | |||||
std_node_state_decl(); | |||||
node_sm_trace(); | |||||
switch(evt) { | |||||
case OCS_EVT_ENTER: | |||||
ocs_node_hold_frames(node); | |||||
break; | |||||
case OCS_EVT_EXIT: | |||||
ocs_node_accept_frames(node); | |||||
break; | |||||
case OCS_EVT_NODE_ATTACH_OK: | |||||
node->attached = TRUE; | |||||
switch (node->send_ls_acc) { | |||||
case OCS_NODE_SEND_LS_ACC_PLOGI: { | |||||
/* sm: send_plogi_acc is set / send PLOGI acc */ | |||||
/* Normal case for T, or I+T */ | |||||
ocs_send_plogi_acc(node->ls_acc_io, node->ls_acc_oxid, NULL, NULL); | |||||
ocs_node_transition(node, __ocs_d_wait_plogi_acc_cmpl, NULL); | |||||
node->send_ls_acc = OCS_NODE_SEND_LS_ACC_NONE; | |||||
node->ls_acc_io = NULL; | |||||
break; | |||||
} | |||||
case OCS_NODE_SEND_LS_ACC_PRLI: { | |||||
ocs_d_send_prli_rsp(node->ls_acc_io, node->ls_acc_oxid); | |||||
node->send_ls_acc = OCS_NODE_SEND_LS_ACC_NONE; | |||||
node->ls_acc_io = NULL; | |||||
break; | |||||
} | |||||
case OCS_NODE_SEND_LS_ACC_NONE: | |||||
default: | |||||
/* Normal case for I */ | |||||
/* sm: send_plogi_acc is not set / send PLOGI acc */ | |||||
ocs_node_transition(node, __ocs_d_port_logged_in, NULL); | |||||
break; | |||||
} | |||||
break; | |||||
case OCS_EVT_NODE_ATTACH_FAIL: | |||||
/* node attach failed, shutdown the node */ | |||||
node->attached = FALSE; | |||||
node_printf(node, "node attach failed\n"); | |||||
node->shutdown_reason = OCS_NODE_SHUTDOWN_DEFAULT; | |||||
ocs_node_transition(node, __ocs_d_initiate_shutdown, NULL); | |||||
break; | |||||
/* Handle shutdown events */ | |||||
case OCS_EVT_SHUTDOWN: | |||||
node_printf(node, "%s received\n", ocs_sm_event_name(evt)); | |||||
node->shutdown_reason = OCS_NODE_SHUTDOWN_DEFAULT; | |||||
ocs_node_transition(node, __ocs_d_wait_attach_evt_shutdown, NULL); | |||||
break; | |||||
case OCS_EVT_SHUTDOWN_EXPLICIT_LOGO: | |||||
node_printf(node, "%s received\n", ocs_sm_event_name(evt)); | |||||
node->shutdown_reason = OCS_NODE_SHUTDOWN_EXPLICIT_LOGO; | |||||
ocs_node_transition(node, __ocs_d_wait_attach_evt_shutdown, NULL); | |||||
break; | |||||
case OCS_EVT_SHUTDOWN_IMPLICIT_LOGO: | |||||
node_printf(node, "%s received\n", ocs_sm_event_name(evt)); | |||||
node->shutdown_reason = OCS_NODE_SHUTDOWN_IMPLICIT_LOGO; | |||||
ocs_node_transition(node, __ocs_d_wait_attach_evt_shutdown, NULL); | |||||
break; | |||||
default: | |||||
__ocs_d_common(__func__, ctx, evt, arg); | |||||
return NULL; | |||||
} | |||||
return NULL; | |||||
} | |||||
/** | |||||
* @ingroup device_sm | |||||
* @brief Device node state machine: Wait for a node/domain | |||||
* attach then shutdown node. | |||||
* | |||||
* @param ctx Remote node state machine context. | |||||
* @param evt Event to process. | |||||
* @param arg Per event optional argument. | |||||
* | |||||
* @return Returns NULL. | |||||
*/ | |||||
void * | |||||
__ocs_d_wait_attach_evt_shutdown(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg) | |||||
{ | |||||
std_node_state_decl(); | |||||
node_sm_trace(); | |||||
switch(evt) { | |||||
case OCS_EVT_ENTER: | |||||
ocs_node_hold_frames(node); | |||||
break; | |||||
case OCS_EVT_EXIT: | |||||
ocs_node_accept_frames(node); | |||||
break; | |||||
/* wait for any of these attach events and then shutdown */ | |||||
case OCS_EVT_NODE_ATTACH_OK: | |||||
node->attached = TRUE; | |||||
node_printf(node, "Attach evt=%s, proceed to shutdown\n", ocs_sm_event_name(evt)); | |||||
ocs_node_transition(node, __ocs_d_initiate_shutdown, NULL); | |||||
break; | |||||
case OCS_EVT_NODE_ATTACH_FAIL: | |||||
/* node attach failed, shutdown the node */ | |||||
node->attached = FALSE; | |||||
node_printf(node, "Attach evt=%s, proceed to shutdown\n", ocs_sm_event_name(evt)); | |||||
ocs_node_transition(node, __ocs_d_initiate_shutdown, NULL); | |||||
break; | |||||
/* ignore shutdown events as we're already in shutdown path */ | |||||
case OCS_EVT_SHUTDOWN: | |||||
/* have default shutdown event take precedence */ | |||||
node->shutdown_reason = OCS_NODE_SHUTDOWN_DEFAULT; | |||||
/* fall through */ | |||||
case OCS_EVT_SHUTDOWN_EXPLICIT_LOGO: | |||||
case OCS_EVT_SHUTDOWN_IMPLICIT_LOGO: | |||||
node_printf(node, "%s received\n", ocs_sm_event_name(evt)); | |||||
break; | |||||
default: | |||||
__ocs_d_common(__func__, ctx, evt, arg); | |||||
return NULL; | |||||
} | |||||
return NULL; | |||||
} | |||||
/** | |||||
* @ingroup device_sm | |||||
* @brief Device node state machine: Port is logged in. | |||||
* | |||||
* <h3 class="desc">Description</h3> | |||||
* This state is entered when a remote port has completed port login (PLOGI). | |||||
* | |||||
* @param ctx Remote node state machine context. | |||||
* @param evt Event to process | |||||
* @param arg Per event optional argument | |||||
* | |||||
* @return Returns NULL. | |||||
*/ | |||||
void * | |||||
__ocs_d_port_logged_in(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg) | |||||
{ | |||||
ocs_node_cb_t *cbdata = arg; | |||||
std_node_state_decl(); | |||||
node_sm_trace(); | |||||
/* TODO: I+T: what if PLOGI response not yet received ? */ | |||||
switch(evt) { | |||||
case OCS_EVT_ENTER: | |||||
/* Normal case for I or I+T */ | |||||
if (node->sport->enable_ini && !FC_ADDR_IS_DOMAIN_CTRL(node->rnode.fc_id) | |||||
&& !node->sent_prli) { | |||||
/* sm: if enable_ini / send PRLI */ | |||||
ocs_send_prli(node, OCS_FC_ELS_SEND_DEFAULT_TIMEOUT, OCS_FC_ELS_DEFAULT_RETRIES, NULL, NULL); | |||||
node->sent_prli = TRUE; | |||||
/* can now expect ELS_REQ_OK/FAIL/RJT */ | |||||
} | |||||
break; | |||||
case OCS_EVT_FCP_CMD_RCVD: { | |||||
/* For target functionality send PRLO and drop the CMD frame. */ | |||||
if (node->sport->enable_tgt) { | |||||
if (ocs_send_prlo(node, OCS_FC_ELS_SEND_DEFAULT_TIMEOUT, | |||||
OCS_FC_ELS_DEFAULT_RETRIES, NULL, NULL)) { | |||||
ocs_node_transition(node, __ocs_d_wait_prlo_rsp, NULL); | |||||
} | |||||
} | |||||
break; | |||||
} | |||||
case OCS_EVT_PRLI_RCVD: { | |||||
fc_header_t *hdr = cbdata->header->dma.virt; | |||||
/* Normal for T or I+T */ | |||||
ocs_process_prli_payload(node, cbdata->payload->dma.virt); | |||||
ocs_d_send_prli_rsp(cbdata->io, ocs_be16toh(hdr->ox_id)); | |||||
break; | |||||
} | |||||
case OCS_EVT_SRRS_ELS_REQ_OK: { /* PRLI response */ | |||||
/* Normal case for I or I+T */ | |||||
if (node_check_els_req(ctx, evt, arg, FC_ELS_CMD_PRLI, __ocs_d_common, __func__)) { | |||||
return NULL; | |||||
} | |||||
ocs_assert(node->els_req_cnt, NULL); | |||||
node->els_req_cnt--; | |||||
/* sm: process PRLI payload */ | |||||
ocs_process_prli_payload(node, cbdata->els->els_rsp.virt); | |||||
ocs_node_transition(node, __ocs_d_device_ready, NULL); | |||||
break; | |||||
} | |||||
case OCS_EVT_SRRS_ELS_REQ_FAIL: { /* PRLI response failed */ | |||||
/* I, I+T, assume some link failure, shutdown node */ | |||||
if (node_check_els_req(ctx, evt, arg, FC_ELS_CMD_PRLI, __ocs_d_common, __func__)) { | |||||
return NULL; | |||||
} | |||||
ocs_assert(node->els_req_cnt, NULL); | |||||
node->els_req_cnt--; | |||||
ocs_node_post_event(node, OCS_EVT_SHUTDOWN, NULL); | |||||
break; | |||||
} | |||||
case OCS_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 (node_check_els_req(ctx, evt, arg, FC_ELS_CMD_PRLI, __ocs_d_common, __func__)) { | |||||
return NULL; | |||||
} | |||||
ocs_assert(node->els_req_cnt, NULL); | |||||
node->els_req_cnt--; | |||||
break; | |||||
} | |||||
case OCS_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) | |||||
*/ | |||||
ocs_assert(node->els_cmpl_cnt, NULL); | |||||
node->els_cmpl_cnt--; | |||||
break; | |||||
} | |||||
case OCS_EVT_PLOGI_RCVD: { | |||||
/* sm: save sparams, set send_plogi_acc, post implicit logout | |||||
* Save plogi parameters */ | |||||
ocs_node_save_sparms(node, cbdata->payload->dma.virt); | |||||
ocs_send_ls_acc_after_attach(cbdata->io, cbdata->header->dma.virt, OCS_NODE_SEND_LS_ACC_PLOGI); | |||||
/* Restart node attach with new service parameters, and send ACC */ | |||||
ocs_node_post_event(node, OCS_EVT_SHUTDOWN_IMPLICIT_LOGO, NULL); | |||||
break; | |||||
} | |||||
case OCS_EVT_LOGO_RCVD: { | |||||
/* I, T, I+T */ | |||||
fc_header_t *hdr = cbdata->header->dma.virt; | |||||
node_printf(node, "%s received attached=%d\n", ocs_sm_event_name(evt), node->attached); | |||||
ocs_send_logo_acc(cbdata->io, ocs_be16toh(hdr->ox_id), NULL, NULL); | |||||
ocs_node_transition(node, __ocs_d_wait_logo_acc_cmpl, NULL); | |||||
break; | |||||
} | |||||
default: | |||||
__ocs_d_common(__func__, ctx, evt, arg); | |||||
return NULL; | |||||
} | |||||
return NULL; | |||||
} | |||||
/** | |||||
* @ingroup device_sm | |||||
* @brief Device node state machine: Wait for a LOGO accept. | |||||
* | |||||
* <h3 class="desc">Description</h3> | |||||
* Waits for a LOGO accept completion. | |||||
* | |||||
* @param ctx Remote node state machine context. | |||||
* @param evt Event to process | |||||
* @param arg Per event optional argument | |||||
* | |||||
* @return Returns NULL. | |||||
*/ | |||||
void * | |||||
__ocs_d_wait_logo_acc_cmpl(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg) | |||||
{ | |||||
std_node_state_decl(); | |||||
node_sm_trace(); | |||||
switch(evt) { | |||||
case OCS_EVT_ENTER: | |||||
ocs_node_hold_frames(node); | |||||
break; | |||||
case OCS_EVT_EXIT: | |||||
ocs_node_accept_frames(node); | |||||
break; | |||||
case OCS_EVT_SRRS_ELS_CMPL_OK: | |||||
case OCS_EVT_SRRS_ELS_CMPL_FAIL: | |||||
/* sm: / post explicit logout */ | |||||
ocs_assert(node->els_cmpl_cnt, NULL); | |||||
node->els_cmpl_cnt--; | |||||
ocs_node_post_event(node, OCS_EVT_SHUTDOWN_EXPLICIT_LOGO, NULL); | |||||
break; | |||||
default: | |||||
__ocs_d_common(__func__, ctx, evt, arg); | |||||
return NULL; | |||||
} | |||||
return NULL; | |||||
} | |||||
/** | |||||
* @ingroup device_sm | |||||
* @brief Device node state machine: Device is ready. | |||||
* | |||||
* @param ctx Remote node state machine context. | |||||
* @param evt Event to process. | |||||
* @param arg Per event optional argument. | |||||
* | |||||
* @return Returns NULL. | |||||
*/ | |||||
void * | |||||
__ocs_d_device_ready(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg) | |||||
{ | |||||
ocs_node_cb_t *cbdata = arg; | |||||
std_node_state_decl(); | |||||
if (evt != OCS_EVT_FCP_CMD_RCVD) { | |||||
node_sm_trace(); | |||||
} | |||||
switch(evt) { | |||||
case OCS_EVT_ENTER: | |||||
node->fcp_enabled = TRUE; | |||||
if (node->init) { | |||||
device_printf(ocs->dev, "[%s] found (initiator) WWPN %s WWNN %s\n", node->display_name, | |||||
node->wwpn, node->wwnn); | |||||
if (node->sport->enable_tgt) | |||||
ocs_scsi_new_initiator(node); | |||||
} | |||||
if (node->targ) { | |||||
device_printf(ocs->dev, "[%s] found (target) WWPN %s WWNN %s\n", node->display_name, | |||||
node->wwpn, node->wwnn); | |||||
if (node->sport->enable_ini) | |||||
ocs_scsi_new_target(node); | |||||
} | |||||
break; | |||||
case OCS_EVT_EXIT: | |||||
node->fcp_enabled = FALSE; | |||||
break; | |||||
case OCS_EVT_PLOGI_RCVD: { | |||||
/* sm: save sparams, set send_plogi_acc, post implicit logout | |||||
* Save plogi parameters */ | |||||
ocs_node_save_sparms(node, cbdata->payload->dma.virt); | |||||
ocs_send_ls_acc_after_attach(cbdata->io, cbdata->header->dma.virt, OCS_NODE_SEND_LS_ACC_PLOGI); | |||||
/* Restart node attach with new service parameters, and send ACC */ | |||||
ocs_node_post_event(node, OCS_EVT_SHUTDOWN_IMPLICIT_LOGO, NULL); | |||||
break; | |||||
} | |||||
case OCS_EVT_PDISC_RCVD: { | |||||
fc_header_t *hdr = cbdata->header->dma.virt; | |||||
ocs_send_plogi_acc(cbdata->io, ocs_be16toh(hdr->ox_id), NULL, NULL); | |||||
break; | |||||
} | |||||
case OCS_EVT_PRLI_RCVD: { | |||||
/* T, I+T: remote initiator is slow to get started */ | |||||
fc_header_t *hdr = cbdata->header->dma.virt; | |||||
ocs_process_prli_payload(node, cbdata->payload->dma.virt); | |||||
/* sm: send PRLI acc/reject */ | |||||
if (ocs->fc_type == node->fc_type) | |||||
ocs_send_prli_acc(cbdata->io, ocs_be16toh(hdr->ox_id), ocs->fc_type, NULL, NULL); | |||||
else | |||||
ocs_send_ls_rjt(cbdata->io, ocs_be16toh(hdr->ox_id), FC_REASON_UNABLE_TO_PERFORM, | |||||
FC_EXPL_REQUEST_NOT_SUPPORTED, 0, NULL, NULL); | |||||
break; | |||||
} | |||||
case OCS_EVT_PRLO_RCVD: { | |||||
fc_header_t *hdr = cbdata->header->dma.virt; | |||||
fc_prlo_payload_t *prlo = cbdata->payload->dma.virt; | |||||
/* sm: send PRLO acc/reject */ | |||||
if (ocs->fc_type == prlo->type) | |||||
ocs_send_prlo_acc(cbdata->io, ocs_be16toh(hdr->ox_id), ocs->fc_type, NULL, NULL); | |||||
else | |||||
ocs_send_ls_rjt(cbdata->io, ocs_be16toh(hdr->ox_id), FC_REASON_UNABLE_TO_PERFORM, | |||||
FC_EXPL_REQUEST_NOT_SUPPORTED, 0, NULL, NULL); | |||||
/*TODO: need implicit logout */ | |||||
break; | |||||
} | |||||
case OCS_EVT_LOGO_RCVD: { | |||||
fc_header_t *hdr = cbdata->header->dma.virt; | |||||
node_printf(node, "%s received attached=%d\n", ocs_sm_event_name(evt), node->attached); | |||||
ocs_send_logo_acc(cbdata->io, ocs_be16toh(hdr->ox_id), NULL, NULL); | |||||
ocs_node_transition(node, __ocs_d_wait_logo_acc_cmpl, NULL); | |||||
break; | |||||
} | |||||
case OCS_EVT_ADISC_RCVD: { | |||||
fc_header_t *hdr = cbdata->header->dma.virt; | |||||
ocs_send_adisc_acc(cbdata->io, ocs_be16toh(hdr->ox_id), NULL, NULL); | |||||
break; | |||||
} | |||||
case OCS_EVT_RRQ_RCVD: { | |||||
fc_header_t *hdr = cbdata->header->dma.virt; | |||||
/* Send LS_ACC */ | |||||
ocs_send_ls_acc(cbdata->io, ocs_be16toh(hdr->ox_id), NULL, NULL); | |||||
break; | |||||
} | |||||
case OCS_EVT_ABTS_RCVD: | |||||
ocs_process_abts(cbdata->io, cbdata->header->dma.virt); | |||||
break; | |||||
case OCS_EVT_NODE_ACTIVE_IO_LIST_EMPTY: | |||||
break; | |||||
case OCS_EVT_NODE_REFOUND: | |||||
break; | |||||
case OCS_EVT_NODE_MISSING: | |||||
if (node->sport->enable_rscn) { | |||||
ocs_node_transition(node, __ocs_d_device_gone, NULL); | |||||
} | |||||
break; | |||||
case OCS_EVT_SRRS_ELS_CMPL_OK: | |||||
/* T, or I+T, PRLI accept completed ok */ | |||||
ocs_assert(node->els_cmpl_cnt, NULL); | |||||
node->els_cmpl_cnt--; | |||||
break; | |||||
case OCS_EVT_SRRS_ELS_CMPL_FAIL: | |||||
/* T, or I+T, PRLI accept failed to complete */ | |||||
ocs_assert(node->els_cmpl_cnt, NULL); | |||||
node->els_cmpl_cnt--; | |||||
node_printf(node, "Failed to send PRLI LS_ACC\n"); | |||||
break; | |||||
default: | |||||
mav: I don't know whether it causes problem here, but testing isp(4) I've recently noticed that… | |||||
Not Done Inline ActionsReplaced GID FT with GIT PT to support this case. ram: Replaced GID FT with GIT PT to support this case. | |||||
__ocs_d_common(__func__, ctx, evt, arg); | |||||
return NULL; | |||||
} | |||||
return NULL; | |||||
} | |||||
/** | |||||
* @ingroup device_sm | |||||
* @brief Device node state machine: Node is gone (absent from GID_PT). | |||||
* | |||||
* <h3 class="desc">Description</h3> | |||||
* State entered when a node is detected as being gone (absent from GID_PT). | |||||
* | |||||
* @param ctx Remote node state machine context. | |||||
* @param evt Event to process | |||||
* @param arg Per event optional argument | |||||
* | |||||
* @return Returns NULL. | |||||
*/ | |||||
void * | |||||
__ocs_d_device_gone(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg) | |||||
{ | |||||
int32_t rc = OCS_SCSI_CALL_COMPLETE; | |||||
int32_t rc_2 = OCS_SCSI_CALL_COMPLETE; | |||||
ocs_node_cb_t *cbdata = arg; | |||||
std_node_state_decl(); | |||||
node_sm_trace(); | |||||
switch(evt) { | |||||
case OCS_EVT_ENTER: { | |||||
const char *labels[] = {"none", "initiator", "target", "initiator+target"}; | |||||
device_printf(ocs->dev, "[%s] missing (%s) WWPN %s WWNN %s\n", node->display_name, | |||||
labels[(node->targ << 1) | (node->init)], node->wwpn, node->wwnn); | |||||
switch(ocs_node_get_enable(node)) { | |||||
case OCS_NODE_ENABLE_T_TO_T: | |||||
case OCS_NODE_ENABLE_I_TO_T: | |||||
case OCS_NODE_ENABLE_IT_TO_T: | |||||
rc = ocs_scsi_del_target(node, OCS_SCSI_TARGET_MISSING); | |||||
break; | |||||
case OCS_NODE_ENABLE_T_TO_I: | |||||
case OCS_NODE_ENABLE_I_TO_I: | |||||
case OCS_NODE_ENABLE_IT_TO_I: | |||||
rc = ocs_scsi_del_initiator(node, OCS_SCSI_INITIATOR_MISSING); | |||||
break; | |||||
case OCS_NODE_ENABLE_T_TO_IT: | |||||
rc = ocs_scsi_del_initiator(node, OCS_SCSI_INITIATOR_MISSING); | |||||
break; | |||||
case OCS_NODE_ENABLE_I_TO_IT: | |||||
rc = ocs_scsi_del_target(node, OCS_SCSI_TARGET_MISSING); | |||||
break; | |||||
case OCS_NODE_ENABLE_IT_TO_IT: | |||||
rc = ocs_scsi_del_initiator(node, OCS_SCSI_INITIATOR_MISSING); | |||||
rc_2 = ocs_scsi_del_target(node, OCS_SCSI_TARGET_MISSING); | |||||
break; | |||||
default: | |||||
rc = OCS_SCSI_CALL_COMPLETE; | |||||
break; | |||||
} | |||||
if ((rc == OCS_SCSI_CALL_COMPLETE) && (rc_2 == OCS_SCSI_CALL_COMPLETE)) { | |||||
ocs_node_post_event(node, OCS_EVT_SHUTDOWN, NULL); | |||||
} | |||||
break; | |||||
} | |||||
case OCS_EVT_NODE_REFOUND: | |||||
/* two approaches, reauthenticate with PLOGI/PRLI, or ADISC */ | |||||
/* reauthenticate with PLOGI/PRLI */ | |||||
/* ocs_node_transition(node, __ocs_d_discovered, NULL); */ | |||||
/* reauthenticate with ADISC | |||||
* sm: send ADISC */ | |||||
ocs_send_adisc(node, OCS_FC_ELS_SEND_DEFAULT_TIMEOUT, OCS_FC_ELS_DEFAULT_RETRIES, NULL, NULL); | |||||
ocs_node_transition(node, __ocs_d_wait_adisc_rsp, NULL); | |||||
break; | |||||
case OCS_EVT_PLOGI_RCVD: { | |||||
/* sm: save sparams, set send_plogi_acc, post implicit logout | |||||
* Save plogi parameters */ | |||||
ocs_node_save_sparms(node, cbdata->payload->dma.virt); | |||||
ocs_send_ls_acc_after_attach(cbdata->io, cbdata->header->dma.virt, OCS_NODE_SEND_LS_ACC_PLOGI); | |||||
/* Restart node attach with new service parameters, and send ACC */ | |||||
ocs_node_post_event(node, OCS_EVT_SHUTDOWN_IMPLICIT_LOGO, NULL); | |||||
break; | |||||
} | |||||
case OCS_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 OCS_EVT_LOGO_RCVD: { | |||||
/* I, T, I+T */ | |||||
fc_header_t *hdr = cbdata->header->dma.virt; | |||||
node_printf(node, "%s received attached=%d\n", ocs_sm_event_name(evt), node->attached); | |||||
/* sm: send LOGO acc */ | |||||
ocs_send_logo_acc(cbdata->io, ocs_be16toh(hdr->ox_id), NULL, NULL); | |||||
ocs_node_transition(node, __ocs_d_wait_logo_acc_cmpl, NULL); | |||||
break; | |||||
} | |||||
default: | |||||
__ocs_d_common(__func__, ctx, evt, arg); | |||||
return NULL; | |||||
} | |||||
return NULL; | |||||
} | |||||
/** | |||||
* @ingroup device_sm | |||||
* @brief Device node state machine: Wait for the ADISC response. | |||||
* | |||||
* <h3 class="desc">Description</h3> | |||||
* Waits for the ADISC response from the remote node. | |||||
* | |||||
* @param ctx Remote node state machine context. | |||||
* @param evt Event to process. | |||||
* @param arg Per event optional argument. | |||||
* | |||||
* @return Returns NULL. | |||||
*/ | |||||
void * | |||||
__ocs_d_wait_adisc_rsp(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg) | |||||
{ | |||||
ocs_node_cb_t *cbdata = arg; | |||||
std_node_state_decl(); | |||||
node_sm_trace(); | |||||
switch(evt) { | |||||
case OCS_EVT_SRRS_ELS_REQ_OK: | |||||
if (node_check_els_req(ctx, evt, arg, FC_ELS_CMD_ADISC, __ocs_d_common, __func__)) { | |||||
return NULL; | |||||
} | |||||
ocs_assert(node->els_req_cnt, NULL); | |||||
node->els_req_cnt--; | |||||
ocs_node_transition(node, __ocs_d_device_ready, NULL); | |||||
break; | |||||
case OCS_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 (node_check_els_req(ctx, evt, arg, FC_ELS_CMD_ADISC, __ocs_d_common, __func__)) { | |||||
return NULL; | |||||
} | |||||
ocs_assert(node->els_req_cnt, NULL); | |||||
node->els_req_cnt--; | |||||
/*sm: post explicit logout */ | |||||
ocs_node_post_event(node, OCS_EVT_SHUTDOWN_EXPLICIT_LOGO, NULL); | |||||
break; | |||||
case OCS_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 */ | |||||
fc_header_t *hdr = cbdata->header->dma.virt; | |||||
node_printf(node, "%s received attached=%d\n", ocs_sm_event_name(evt), node->attached); | |||||
ocs_send_logo_acc(cbdata->io, ocs_be16toh(hdr->ox_id), NULL, NULL); | |||||
ocs_node_transition(node, __ocs_d_wait_logo_acc_cmpl, NULL); | |||||
break; | |||||
} | |||||
default: | |||||
__ocs_d_common(__func__, ctx, evt, arg); | |||||
return NULL; | |||||
} | |||||
return NULL; | |||||
} |
I don't know whether it causes problem here, but testing isp(4) I've recently noticed that QLogic BIOS does not register FC-4 type, and so does not appear in GID_FT response at least on my old Brocade switch, that made impossible OS booting from FreeBSD isp(4) target.