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freebsd-dev/sys/dev/ocs_fc/ocs_node.c

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Bring in the Broadcom/Emulex Fibre Channel driver, ocs_fc(4). The ocs_fc(4) driver supports the following hardware: Emulex 16/8G FC GEN 5 HBAS LPe15004 FC Host Bus Adapters LPe160XX FC Host Bus Adapters Emulex 32/16G FC GEN 6 HBAS LPe3100X FC Host Bus Adapters LPe3200X FC Host Bus Adapters The driver supports target and initiator mode, and also supports FC-Tape. Note that the driver only currently works on little endian platforms. It is only included in the module build for amd64 and i386, and in GENERIC on amd64 only. Submitted by: Ram Kishore Vegesna <ram.vegesna@broadcom.com> Reviewed by: mav MFC after: 5 days Relnotes: yes Sponsored by: Broadcom Differential Revision: https://reviews.freebsd.org/D11423
2018-03-30 15:28:25 +00:00
/*-
* 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.
*
* $FreeBSD$
*/
/**
* @file
* OCS driver remote node handler. This file contains code that is shared
* between fabric (ocs_fabric.c) and device (ocs_device.c) nodes.
*/
/*!
* @defgroup node_common Node common support
* @defgroup node_alloc Node allocation
*/
#include "ocs.h"
#include "ocs_els.h"
#include "ocs_device.h"
#define SCSI_IOFMT "[%04x][i:%0*x t:%0*x h:%04x]"
#define SCSI_ITT_SIZE(ocs) ((ocs->ocs_xport == OCS_XPORT_FC) ? 4 : 8)
#define SCSI_IOFMT_ARGS(io) io->instance_index, SCSI_ITT_SIZE(io->ocs), io->init_task_tag, SCSI_ITT_SIZE(io->ocs), io->tgt_task_tag, io->hw_tag
#define scsi_io_printf(io, fmt, ...) ocs_log_debug(io->ocs, "[%s]" SCSI_IOFMT fmt, \
io->node->display_name, SCSI_IOFMT_ARGS(io), ##__VA_ARGS__)
void ocs_mgmt_node_list(ocs_textbuf_t *textbuf, void *node);
void ocs_mgmt_node_get_all(ocs_textbuf_t *textbuf, void *node);
int ocs_mgmt_node_get(ocs_textbuf_t *textbuf, char *parent, char *name, void *node);
int ocs_mgmt_node_set(char *parent, char *name, char *value, void *node);
int ocs_mgmt_node_exec(char *parent, char *action, void *arg_in, uint32_t arg_in_length,
void *arg_out, uint32_t arg_out_length, void *node);
static ocs_mgmt_functions_t node_mgmt_functions = {
.get_list_handler = ocs_mgmt_node_list,
.get_handler = ocs_mgmt_node_get,
.get_all_handler = ocs_mgmt_node_get_all,
.set_handler = ocs_mgmt_node_set,
.exec_handler = ocs_mgmt_node_exec,
};
/**
* @ingroup node_common
* @brief Device node state machine wait for all ELS's to
* complete
*
* Abort all ELS's for given node.
*
* @param node node for which ELS's will be aborted
*/
void
ocs_node_abort_all_els(ocs_node_t *node)
{
ocs_io_t *els;
ocs_io_t *els_next;
ocs_node_cb_t cbdata = {0};
ocs_node_hold_frames(node);
ocs_lock(&node->active_ios_lock);
ocs_list_foreach_safe(&node->els_io_active_list, els, els_next) {
ocs_log_debug(node->ocs, "[%s] initiate ELS abort %s\n", node->display_name, els->display_name);
ocs_unlock(&node->active_ios_lock);
cbdata.els = els;
ocs_els_post_event(els, OCS_EVT_ABORT_ELS, &cbdata);
ocs_lock(&node->active_ios_lock);
}
ocs_unlock(&node->active_ios_lock);
}
/**
* @ingroup node_common
* @brief Handle remote node events from HW
*
* Handle remote node events from HW. Essentially the HW event is translated into
* a node state machine event that is posted to the affected node.
*
* @param arg pointer to ocs
* @param event HW event to proceoss
* @param data application specific data (pointer to the affected node)
*
* @return returns 0 for success, a negative error code value for failure.
*/
int32_t
ocs_remote_node_cb(void *arg, ocs_hw_remote_node_event_e event, void *data)
{
ocs_t *ocs = arg;
ocs_sm_event_t sm_event = OCS_EVT_LAST;
ocs_remote_node_t *rnode = data;
ocs_node_t *node = rnode->node;
switch (event) {
case OCS_HW_NODE_ATTACH_OK:
sm_event = OCS_EVT_NODE_ATTACH_OK;
break;
case OCS_HW_NODE_ATTACH_FAIL:
sm_event = OCS_EVT_NODE_ATTACH_FAIL;
break;
case OCS_HW_NODE_FREE_OK:
sm_event = OCS_EVT_NODE_FREE_OK;
break;
case OCS_HW_NODE_FREE_FAIL:
sm_event = OCS_EVT_NODE_FREE_FAIL;
break;
default:
ocs_log_test(ocs, "unhandled event %#x\n", event);
return -1;
}
/* If we're using HLM, forward the NODE_ATTACH_OK/FAIL event to all nodes in the node group */
if ((node->node_group != NULL) &&
((sm_event == OCS_EVT_NODE_ATTACH_OK) || (sm_event == OCS_EVT_NODE_ATTACH_FAIL))) {
ocs_node_t *n = NULL;
uint8_t attach_ok = sm_event == OCS_EVT_NODE_ATTACH_OK;
ocs_sport_lock(node->sport);
{
ocs_list_foreach(&node->sport->node_list, n) {
if (node == n) {
continue;
}
ocs_node_lock(n);
if ((!n->rnode.attached) && (node->node_group == n->node_group)) {
n->rnode.attached = attach_ok;
node_printf(n, "rpi[%d] deferred HLM node attach %s posted\n",
n->rnode.index, attach_ok ? "ok" : "fail");
ocs_node_post_event(n, sm_event, NULL);
}
ocs_node_unlock(n);
}
}
ocs_sport_unlock(node->sport);
}
ocs_node_post_event(node, sm_event, NULL);
return 0;
}
/**
* @ingroup node_alloc
* @brief Find an FC node structure given the FC port ID
*
* @param sport the SPORT to search
* @param port_id FC port ID
*
* @return pointer to the object or NULL if not found
*/
ocs_node_t *
ocs_node_find(ocs_sport_t *sport, uint32_t port_id)
{
ocs_node_t *node;
ocs_assert(sport->lookup, NULL);
ocs_sport_lock(sport);
node = spv_get(sport->lookup, port_id);
ocs_sport_unlock(sport);
return node;
}
/**
* @ingroup node_alloc
* @brief Find an FC node structure given the WWPN
*
* @param sport the SPORT to search
* @param wwpn the WWPN to search for (host endian)
*
* @return pointer to the object or NULL if not found
*/
ocs_node_t *
ocs_node_find_wwpn(ocs_sport_t *sport, uint64_t wwpn)
{
ocs_node_t *node = NULL;;
ocs_assert(sport, NULL);
ocs_sport_lock(sport);
ocs_list_foreach(&sport->node_list, node) {
if (ocs_node_get_wwpn(node) == wwpn) {
ocs_sport_unlock(sport);
return node;
}
}
ocs_sport_unlock(sport);
return NULL;
}
/**
* @ingroup node_alloc
* @brief allocate node object pool
*
* A pool of ocs_node_t objects is allocated.
*
* @param ocs pointer to driver instance context
* @param node_count count of nodes to allocate
*
* @return returns 0 for success, a negative error code value for failure.
*/
int32_t
ocs_node_create_pool(ocs_t *ocs, uint32_t node_count)
{
ocs_xport_t *xport = ocs->xport;
uint32_t i;
ocs_node_t *node;
uint32_t max_sge;
uint32_t num_sgl;
uint64_t max_xfer_size;
int32_t rc;
xport->nodes_count = node_count;
xport->nodes = ocs_malloc(ocs, node_count * sizeof(ocs_node_t *), OCS_M_ZERO | OCS_M_NOWAIT);
if (xport->nodes == NULL) {
ocs_log_err(ocs, "node ptrs allocation failed");
return -1;
}
if (0 == ocs_hw_get(&ocs->hw, OCS_HW_MAX_SGE, &max_sge) &&
0 == ocs_hw_get(&ocs->hw, OCS_HW_N_SGL, &num_sgl)) {
Fixed issues reported by coverity scan. Approved by: mav MFC after: 3 weeks
2019-01-23 17:34:01 +00:00
max_xfer_size = (max_sge * (uint64_t)num_sgl);
Bring in the Broadcom/Emulex Fibre Channel driver, ocs_fc(4). The ocs_fc(4) driver supports the following hardware: Emulex 16/8G FC GEN 5 HBAS LPe15004 FC Host Bus Adapters LPe160XX FC Host Bus Adapters Emulex 32/16G FC GEN 6 HBAS LPe3100X FC Host Bus Adapters LPe3200X FC Host Bus Adapters The driver supports target and initiator mode, and also supports FC-Tape. Note that the driver only currently works on little endian platforms. It is only included in the module build for amd64 and i386, and in GENERIC on amd64 only. Submitted by: Ram Kishore Vegesna <ram.vegesna@broadcom.com> Reviewed by: mav MFC after: 5 days Relnotes: yes Sponsored by: Broadcom Differential Revision: https://reviews.freebsd.org/D11423
2018-03-30 15:28:25 +00:00
} else {
max_xfer_size = 65536;
}
if (max_xfer_size > 65536)
max_xfer_size = 65536;
ocs_list_init(&xport->nodes_free_list, ocs_node_t, link);
for (i = 0; i < node_count; i ++) {
node = ocs_malloc(ocs, sizeof(ocs_node_t), OCS_M_ZERO | OCS_M_NOWAIT);
if (node == NULL) {
ocs_log_err(ocs, "node allocation failed");
goto error;
}
/* Assign any persistent field values */
node->instance_index = i;
node->max_wr_xfer_size = max_xfer_size;
node->rnode.indicator = UINT32_MAX;
rc = ocs_dma_alloc(ocs, &node->sparm_dma_buf, 256, 16);
if (rc) {
ocs_free(ocs, node, sizeof(ocs_node_t));
ocs_log_err(ocs, "ocs_dma_alloc failed: %d\n", rc);
goto error;
}
xport->nodes[i] = node;
ocs_list_add_tail(&xport->nodes_free_list, node);
}
return 0;
error:
ocs_node_free_pool(ocs);
return -1;
}
/**
* @ingroup node_alloc
* @brief free node object pool
*
* The pool of previously allocated node objects is freed
*
* @param ocs pointer to driver instance context
*
* @return none
*/
void
ocs_node_free_pool(ocs_t *ocs)
{
ocs_xport_t *xport = ocs->xport;
ocs_node_t *node;
uint32_t i;
if (!xport->nodes)
return;
ocs_device_lock(ocs);
for (i = 0; i < xport->nodes_count; i ++) {
node = xport->nodes[i];
if (node) {
/* free sparam_dma_buf */
ocs_dma_free(ocs, &node->sparm_dma_buf);
ocs_free(ocs, node, sizeof(ocs_node_t));
}
xport->nodes[i] = NULL;
}
ocs_free(ocs, xport->nodes, (xport->nodes_count * sizeof(ocs_node_t *)));
ocs_device_unlock(ocs);
}
/**
* @ingroup node_alloc
* @brief return pointer to node object given instance index
*
* A pointer to the node object given by an instance index is returned.
*
* @param ocs pointer to driver instance context
* @param index instance index
*
* @return returns pointer to node object, or NULL
*/
ocs_node_t *
ocs_node_get_instance(ocs_t *ocs, uint32_t index)
{
ocs_xport_t *xport = ocs->xport;
ocs_node_t *node = NULL;
if (index >= (xport->nodes_count)) {
ocs_log_test(ocs, "invalid index: %d\n", index);
return NULL;
}
node = xport->nodes[index];
return node->attached ? node : NULL;
}
/**
* @ingroup node_alloc
* @brief Allocate an fc node structure and add to node list
*
* @param sport pointer to the SPORT from which this node is allocated
* @param port_id FC port ID of new node
* @param init Port is an inititiator (sent a plogi)
* @param targ Port is potentially a target
*
* @return pointer to the object or NULL if none available
*/
ocs_node_t *
ocs_node_alloc(ocs_sport_t *sport, uint32_t port_id, uint8_t init, uint8_t targ)
{
int32_t rc;
ocs_node_t *node = NULL;
uint32_t instance_index;
uint32_t max_wr_xfer_size;
ocs_t *ocs = sport->ocs;
ocs_xport_t *xport = ocs->xport;
ocs_dma_t sparm_dma_buf;
ocs_assert(sport, NULL);
if (sport->shutting_down) {
ocs_log_debug(ocs, "node allocation when shutting down %06x", port_id);
return NULL;
}
ocs_device_lock(ocs);
node = ocs_list_remove_head(&xport->nodes_free_list);
ocs_device_unlock(ocs);
if (node == NULL) {
ocs_log_err(ocs, "node allocation failed %06x", port_id);
return NULL;
}
/* Save persistent values across memset zero */
instance_index = node->instance_index;
max_wr_xfer_size = node->max_wr_xfer_size;
sparm_dma_buf = node->sparm_dma_buf;
ocs_memset(node, 0, sizeof(*node));
node->instance_index = instance_index;
node->max_wr_xfer_size = max_wr_xfer_size;
node->sparm_dma_buf = sparm_dma_buf;
node->rnode.indicator = UINT32_MAX;
node->sport = sport;
ocs_sport_lock(sport);
node->ocs = ocs;
node->init = init;
node->targ = targ;
rc = ocs_hw_node_alloc(&ocs->hw, &node->rnode, port_id, sport);
if (rc) {
ocs_log_err(ocs, "ocs_hw_node_alloc failed: %d\n", rc);
ocs_sport_unlock(sport);
/* Return back to pool. */
ocs_device_lock(ocs);
ocs_list_add_tail(&xport->nodes_free_list, node);
ocs_device_unlock(ocs);
return NULL;
}
ocs_list_add_tail(&sport->node_list, node);
ocs_node_lock_init(node);
ocs_lock_init(ocs, &node->pend_frames_lock, "pend_frames_lock[%d]", node->instance_index);
ocs_list_init(&node->pend_frames, ocs_hw_sequence_t, link);
ocs_lock_init(ocs, &node->active_ios_lock, "active_ios[%d]", node->instance_index);
ocs_list_init(&node->active_ios, ocs_io_t, link);
ocs_list_init(&node->els_io_pend_list, ocs_io_t, link);
ocs_list_init(&node->els_io_active_list, ocs_io_t, link);
ocs_scsi_io_alloc_enable(node);
/* zero the service parameters */
ocs_memset(node->sparm_dma_buf.virt, 0, node->sparm_dma_buf.size);
node->rnode.node = node;
node->sm.app = node;
node->evtdepth = 0;
ocs_node_update_display_name(node);
spv_set(sport->lookup, port_id, node);
ocs_sport_unlock(sport);
node->mgmt_functions = &node_mgmt_functions;
return node;
}
/**
* @ingroup node_alloc
* @brief free a node structure
*
* The node structure given by 'node' is free'd
*
* @param node the node to free
*
* @return returns 0 for success, a negative error code value for failure.
*/
int32_t
ocs_node_free(ocs_node_t *node)
{
ocs_sport_t *sport;
ocs_t *ocs;
ocs_xport_t *xport;
ocs_hw_rtn_e rc = 0;
ocs_node_t *ns = NULL;
int post_all_free = FALSE;
ocs_assert(node, -1);
ocs_assert(node->sport, -1);
ocs_assert(node->ocs, -1);
sport = node->sport;
ocs_assert(sport, -1);
ocs = node->ocs;
ocs_assert(ocs->xport, -1);
xport = ocs->xport;
node_printf(node, "Free'd\n");
if(node->refound) {
/*
* Save the name server node. We will send fake RSCN event at
* the end to handle ignored RSCN event during node deletion
*/
ns = ocs_node_find(node->sport, FC_ADDR_NAMESERVER);
}
/* Remove from node list */
ocs_sport_lock(sport);
ocs_list_remove(&sport->node_list, node);
/* Free HW resources */
if (OCS_HW_RTN_IS_ERROR((rc = ocs_hw_node_free_resources(&ocs->hw, &node->rnode)))) {
ocs_log_test(ocs, "ocs_hw_node_free failed: %d\n", rc);
rc = -1;
}
/* if the gidpt_delay_timer is still running, then delete it */
if (ocs_timer_pending(&node->gidpt_delay_timer)) {
ocs_del_timer(&node->gidpt_delay_timer);
}
if (node->fcp2device) {
ocs_del_crn(node);
}
/* remove entry from sparse vector list */
if (sport->lookup == NULL) {
ocs_log_test(node->ocs, "assertion failed: sport lookup is NULL\n");
ocs_sport_unlock(sport);
return -1;
}
spv_set(sport->lookup, node->rnode.fc_id, NULL);
/*
* If the node_list is empty, then post a ALL_CHILD_NODES_FREE event to the sport,
* after the lock is released. The sport may be free'd as a result of the event.
*/
if (ocs_list_empty(&sport->node_list)) {
post_all_free = TRUE;
}
ocs_sport_unlock(sport);
if (post_all_free) {
ocs_sm_post_event(&sport->sm, OCS_EVT_ALL_CHILD_NODES_FREE, NULL);
}
node->sport = NULL;
node->sm.current_state = NULL;
ocs_node_lock_free(node);
ocs_lock_free(&node->pend_frames_lock);
ocs_lock_free(&node->active_ios_lock);
/* return to free list */
ocs_device_lock(ocs);
ocs_list_add_tail(&xport->nodes_free_list, node);
ocs_device_unlock(ocs);
if(ns != NULL) {
/* sending fake RSCN event to name server node */
ocs_node_post_event(ns, OCS_EVT_RSCN_RCVD, NULL);
}
return rc;
}
/**
* @brief free memory resources of a node object
*
* The node object's child objects are freed after which the
* node object is freed.
*
* @param node pointer to a node object
*
* @return none
*/
void
ocs_node_force_free(ocs_node_t *node)
{
ocs_io_t *io;
ocs_io_t *next;
ocs_io_t *els;
ocs_io_t *els_next;
/* shutdown sm processing */
ocs_sm_disable(&node->sm);
ocs_strncpy(node->prev_state_name, node->current_state_name, sizeof(node->prev_state_name));
ocs_strncpy(node->current_state_name, "disabled", sizeof(node->current_state_name));
/* Let the backend cleanup if needed */
ocs_scsi_notify_node_force_free(node);
ocs_lock(&node->active_ios_lock);
ocs_list_foreach_safe(&node->active_ios, io, next) {
ocs_list_remove(&io->node->active_ios, io);
ocs_io_free(node->ocs, io);
}
ocs_unlock(&node->active_ios_lock);
/* free all pending ELS IOs */
ocs_lock(&node->active_ios_lock);
ocs_list_foreach_safe(&node->els_io_pend_list, els, els_next) {
/* can't call ocs_els_io_free() because lock is held; cleanup manually */
ocs_list_remove(&node->els_io_pend_list, els);
ocs_io_free(node->ocs, els);
}
ocs_unlock(&node->active_ios_lock);
/* free all active ELS IOs */
ocs_lock(&node->active_ios_lock);
ocs_list_foreach_safe(&node->els_io_active_list, els, els_next) {
/* can't call ocs_els_io_free() because lock is held; cleanup manually */
ocs_list_remove(&node->els_io_active_list, els);
ocs_io_free(node->ocs, els);
}
ocs_unlock(&node->active_ios_lock);
/* manually purge pending frames (if any) */
ocs_node_purge_pending(node);
ocs_node_free(node);
}
/**
* @ingroup node_common
* @brief Perform HW call to attach a remote node
*
* @param node pointer to node object
*
* @return 0 on success, non-zero otherwise
*/
int32_t
ocs_node_attach(ocs_node_t *node)
{
int32_t rc = 0;
ocs_sport_t *sport = node->sport;
ocs_domain_t *domain = sport->domain;
ocs_t *ocs = node->ocs;
if (!domain->attached) {
ocs_log_test(ocs, "Warning: ocs_node_attach with unattached domain\n");
return -1;
}
/* Update node->wwpn/wwnn */
ocs_node_build_eui_name(node->wwpn, sizeof(node->wwpn), ocs_node_get_wwpn(node));
ocs_node_build_eui_name(node->wwnn, sizeof(node->wwnn), ocs_node_get_wwnn(node));
if (ocs->enable_hlm) {
ocs_node_group_init(node);
}
ocs_dma_copy_in(&node->sparm_dma_buf, node->service_params+4, sizeof(node->service_params)-4);
/* take lock to protect node->rnode.attached */
ocs_node_lock(node);
rc = ocs_hw_node_attach(&ocs->hw, &node->rnode, &node->sparm_dma_buf);
if (OCS_HW_RTN_IS_ERROR(rc)) {
ocs_log_test(ocs, "ocs_hw_node_attach failed: %d\n", rc);
}
ocs_node_unlock(node);
return rc;
}
/**
* @ingroup node_common
* @brief Generate text for a node's fc_id
*
* The text for a nodes fc_id is generated, either as a well known name, or a 6 digit
* hex value.
*
* @param fc_id fc_id
* @param buffer text buffer
* @param buffer_length text buffer length in bytes
*
* @return none
*/
void
ocs_node_fcid_display(uint32_t fc_id, char *buffer, uint32_t buffer_length)
{
switch (fc_id) {
case FC_ADDR_FABRIC:
ocs_snprintf(buffer, buffer_length, "fabric");
break;
case FC_ADDR_CONTROLLER:
ocs_snprintf(buffer, buffer_length, "fabctl");
break;
case FC_ADDR_NAMESERVER:
ocs_snprintf(buffer, buffer_length, "nserve");
break;
default:
if (FC_ADDR_IS_DOMAIN_CTRL(fc_id)) {
ocs_snprintf(buffer, buffer_length, "dctl%02x",
FC_ADDR_GET_DOMAIN_CTRL(fc_id));
} else {
ocs_snprintf(buffer, buffer_length, "%06x", fc_id);
}
break;
}
}
/**
* @brief update the node's display name
*
* The node's display name is updated, sometimes needed because the sport part
* is updated after the node is allocated.
*
* @param node pointer to the node object
*
* @return none
*/
void
ocs_node_update_display_name(ocs_node_t *node)
{
uint32_t port_id = node->rnode.fc_id;
ocs_sport_t *sport = node->sport;
char portid_display[16];
ocs_assert(sport);
ocs_node_fcid_display(port_id, portid_display, sizeof(portid_display));
ocs_snprintf(node->display_name, sizeof(node->display_name), "%s.%s", sport->display_name, portid_display);
}
/**
* @brief cleans up an XRI for the pending link services accept by aborting the
* XRI if required.
*
* <h3 class="desc">Description</h3>
* This function is called when the LS accept is not sent.
*
* @param node Node for which should be cleaned up
*/
void
ocs_node_send_ls_io_cleanup(ocs_node_t *node)
{
ocs_t *ocs = node->ocs;
if (node->send_ls_acc != OCS_NODE_SEND_LS_ACC_NONE) {
ocs_assert(node->ls_acc_io);
ocs_log_debug(ocs, "[%s] cleaning up LS_ACC oxid=0x%x\n",
node->display_name, node->ls_acc_oxid);
node->ls_acc_io->hio = NULL;
ocs_els_io_free(node->ls_acc_io);
node->send_ls_acc = OCS_NODE_SEND_LS_ACC_NONE;
node->ls_acc_io = NULL;
}
}
/**
* @ingroup node_common
* @brief state: shutdown a node
*
* A node is shutdown,
*
* @param ctx remote node sm context
* @param evt event to process
* @param arg per event optional argument
*
* @return returns NULL
*
* @note
*/
void *
__ocs_node_shutdown(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);
ocs_assert(ocs_node_active_ios_empty(node), NULL);
ocs_assert(ocs_els_io_list_empty(node, &node->els_io_active_list), NULL);
/* by default, we will be freeing node after we unwind */
node->req_free = 1;
switch (node->shutdown_reason) {
case OCS_NODE_SHUTDOWN_IMPLICIT_LOGO:
/* sm: if shutdown reason is implicit logout / ocs_node_attach
* Node shutdown b/c of PLOGI received when node already
* logged in. We have PLOGI service parameters, so submit
* node attach; we won't be freeing this node
*/
/* currently, only case for implicit logo is PLOGI recvd. Thus,
* node's ELS IO pending list won't be empty (PLOGI will be on it)
*/
ocs_assert(node->send_ls_acc == OCS_NODE_SEND_LS_ACC_PLOGI, NULL);
node_printf(node, "Shutdown reason: implicit logout, re-authenticate\n");
ocs_scsi_io_alloc_enable(node);
/* Re-attach node with the same HW node resources */
node->req_free = 0;
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_NODE_SHUTDOWN_EXPLICIT_LOGO: {
int8_t pend_frames_empty;
/* cleanup any pending LS_ACC ELSs */
ocs_node_send_ls_io_cleanup(node);
ocs_assert(ocs_els_io_list_empty(node, &node->els_io_pend_list), NULL);
ocs_lock(&node->pend_frames_lock);
pend_frames_empty = ocs_list_empty(&node->pend_frames);
ocs_unlock(&node->pend_frames_lock);
/* there are two scenarios where we want to keep this node alive:
* 1. there are pending frames that need to be processed or
* 2. we're an initiator and the remote node is a target and we
* need to re-authenticate
*/
node_printf(node, "Shutdown: explicit logo pend=%d sport.ini=%d node.tgt=%d\n",
!pend_frames_empty, node->sport->enable_ini, node->targ);
if((!pend_frames_empty) || (node->sport->enable_ini && node->targ)) {
uint8_t send_plogi = FALSE;
if (node->sport->enable_ini && node->targ) {
/* we're an initiator and node shutting down is a target; we'll
* need to re-authenticate in initial state
*/
send_plogi = TRUE;
}
/* transition to __ocs_d_init (will retain HW node resources) */
ocs_scsi_io_alloc_enable(node);
node->req_free = 0;
/* either pending frames exist, or we're re-authenticating with PLOGI
* (or both); in either case, return to initial state
*/
ocs_node_init_device(node, send_plogi);
}
/* else: let node shutdown occur */
break;
}
case OCS_NODE_SHUTDOWN_DEFAULT:
default:
/* shutdown due to link down, node going away (xport event) or
* sport shutdown, purge pending and proceed to cleanup node
*/
/* cleanup any pending LS_ACC ELSs */
ocs_node_send_ls_io_cleanup(node);
ocs_assert(ocs_els_io_list_empty(node, &node->els_io_pend_list), NULL);
node_printf(node, "Shutdown reason: default, purge pending\n");
ocs_node_purge_pending(node);
break;
}
break;
}
case OCS_EVT_EXIT:
ocs_node_accept_frames(node);
break;
default:
__ocs_node_common(__func__, ctx, evt, arg);
return NULL;
}
return NULL;
}
/**
* @ingroup common_node
* @brief Checks to see if ELS's have been quiesced
*
* Check if ELS's have been quiesced. If so, transition to the
* next state in the shutdown process.
*
* @param node Node for which ELS's are checked
*
* @return Returns 1 if ELS's have been quiesced, 0 otherwise.
*/
static int
ocs_node_check_els_quiesced(ocs_node_t *node)
{
ocs_assert(node, -1);
/* check to see if ELS requests, completions are quiesced */
if ((node->els_req_cnt == 0) && (node->els_cmpl_cnt == 0) &&
ocs_els_io_list_empty(node, &node->els_io_active_list)) {
if (!node->attached) {
/* hw node detach already completed, proceed */
node_printf(node, "HW node not attached\n");
ocs_node_transition(node, __ocs_node_wait_ios_shutdown, NULL);
} else {
/* hw node detach hasn't completed, transition and wait */
node_printf(node, "HW node still attached\n");
ocs_node_transition(node, __ocs_node_wait_node_free, NULL);
}
return 1;
}
return 0;
}
/**
* @ingroup common_node
* @brief Initiate node IO cleanup.
*
* Note: this function must be called with a non-attached node
* or a node for which the node detach (ocs_hw_node_detach())
* has already been initiated.
*
* @param node Node for which shutdown is initiated
*
* @return Returns None.
*/
void
ocs_node_initiate_cleanup(ocs_node_t *node)
{
ocs_io_t *els;
ocs_io_t *els_next;
ocs_t *ocs;
ocs_assert(node);
ocs = node->ocs;
/* first cleanup ELS's that are pending (not yet active) */
ocs_lock(&node->active_ios_lock);
ocs_list_foreach_safe(&node->els_io_pend_list, els, els_next) {
/* skip the ELS IO for which a response will be sent after shutdown */
if ((node->send_ls_acc != OCS_NODE_SEND_LS_ACC_NONE) &&
(els == node->ls_acc_io)) {
continue;
}
/* can't call ocs_els_io_free() because lock is held; cleanup manually */
node_printf(node, "Freeing pending els %s\n", els->display_name);
ocs_list_remove(&node->els_io_pend_list, els);
ocs_io_free(node->ocs, els);
}
ocs_unlock(&node->active_ios_lock);
if (node->ls_acc_io && node->ls_acc_io->hio != NULL) {
/*
* if there's an IO that will result in an LS_ACC after
* shutdown and its HW IO is non-NULL, it better be an
* implicit logout in vanilla sequence coalescing. In this
* case, force the LS_ACC to go out on another XRI (hio)
* since the previous will have been aborted by the UNREG_RPI
*/
ocs_assert(node->shutdown_reason == OCS_NODE_SHUTDOWN_IMPLICIT_LOGO);
ocs_assert(node->send_ls_acc == OCS_NODE_SEND_LS_ACC_PLOGI);
node_printf(node, "invalidating ls_acc_io due to implicit logo\n");
/* No need to abort because the unreg_rpi takes care of it, just free */
ocs_hw_io_free(&ocs->hw, node->ls_acc_io->hio);
/* NULL out hio to force the LS_ACC to grab a new XRI */
node->ls_acc_io->hio = NULL;
}
/*
* if ELS's have already been quiesced, will move to next state
* if ELS's have not been quiesced, abort them
*/
if (ocs_node_check_els_quiesced(node) == 0) {
/*
* Abort all ELS's since ELS's won't be aborted by HW
* node free.
*/
ocs_node_abort_all_els(node);
ocs_node_transition(node, __ocs_node_wait_els_shutdown, NULL);
}
}
/**
* @ingroup node_common
* @brief Node state machine: Wait for all ELSs to complete.
*
* <h3 class="desc">Description</h3>
* State waits for all ELSs to complete after aborting all
* outstanding .
*
* @param ctx Remote node state machine context.
* @param evt Event to process.
* @param arg Per event optional argument.
*
* @return Returns NULL.
*/
void *
__ocs_node_wait_els_shutdown(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg)
{
uint8_t check_quiesce = FALSE;
std_node_state_decl();
node_sm_trace();
switch(evt) {
case OCS_EVT_ENTER: {
ocs_node_hold_frames(node);
if (ocs_els_io_list_empty(node, &node->els_io_active_list)) {
node_printf(node, "All ELS IOs complete\n");
check_quiesce = TRUE;
}
break;
}
case OCS_EVT_EXIT:
ocs_node_accept_frames(node);
break;
case OCS_EVT_SRRS_ELS_REQ_OK:
case OCS_EVT_SRRS_ELS_REQ_FAIL:
case OCS_EVT_SRRS_ELS_REQ_RJT:
case OCS_EVT_ELS_REQ_ABORTED:
ocs_assert(node->els_req_cnt, NULL);
node->els_req_cnt--;
check_quiesce = TRUE;
break;
case OCS_EVT_SRRS_ELS_CMPL_OK:
case OCS_EVT_SRRS_ELS_CMPL_FAIL:
ocs_assert(node->els_cmpl_cnt, NULL);
node->els_cmpl_cnt--;
check_quiesce = TRUE;
break;
case OCS_EVT_ALL_CHILD_NODES_FREE:
/* all ELS IO's complete */
node_printf(node, "All ELS IOs complete\n");
ocs_assert(ocs_els_io_list_empty(node, &node->els_io_active_list), NULL);
check_quiesce = TRUE;
break;
case OCS_EVT_NODE_ACTIVE_IO_LIST_EMPTY:
break;
case OCS_EVT_DOMAIN_ATTACH_OK:
/* don't care about domain_attach_ok */
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_node_common(__func__, ctx, evt, arg);
return NULL;
}
if (check_quiesce) {
ocs_node_check_els_quiesced(node);
}
return NULL;
}
/**
* @ingroup node_command
* @brief Node state machine: Wait for a HW node free event to
* complete.
*
* <h3 class="desc">Description</h3>
* State waits for the node free event to be received from the HW.
*
* @param ctx Remote node state machine context.
* @param evt Event to process.
* @param arg Per event optional argument.
*
* @return Returns NULL.
*/
void *
__ocs_node_wait_node_free(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_FREE_OK:
/* node is officially no longer attached */
node->attached = FALSE;
ocs_node_transition(node, __ocs_node_wait_ios_shutdown, NULL);
break;
case OCS_EVT_ALL_CHILD_NODES_FREE:
case OCS_EVT_NODE_ACTIVE_IO_LIST_EMPTY:
/* As IOs and ELS IO's complete we expect to get these events */
break;
case OCS_EVT_DOMAIN_ATTACH_OK:
/* don't care about domain_attach_ok */
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_node_common(__func__, ctx, evt, arg);
return NULL;
}
return NULL;
}
/**
* @ingroup node_common
* @brief state: initiate node shutdown
*
* State is entered when a node receives a shutdown event, and it's waiting
* for all the active IOs and ELS IOs associated with the node to complete.
*
* @param ctx remote node sm context
* @param evt event to process
* @param arg per event optional argument
*
* @return returns NULL
*/
void *
__ocs_node_wait_ios_shutdown(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg)
{
ocs_io_t *io;
ocs_io_t *next;
std_node_state_decl();
node_sm_trace();
switch(evt) {
case OCS_EVT_ENTER:
ocs_node_hold_frames(node);
/* first check to see if no ELS IOs are outstanding */
if (ocs_els_io_list_empty(node, &node->els_io_active_list)) {
/* If there are any active IOS, Free them. */
if (!ocs_node_active_ios_empty(node)) {
ocs_lock(&node->active_ios_lock);
ocs_list_foreach_safe(&node->active_ios, io, next) {
ocs_list_remove(&io->node->active_ios, io);
ocs_io_free(node->ocs, io);
}
ocs_unlock(&node->active_ios_lock);
}
ocs_node_transition(node, __ocs_node_shutdown, NULL);
}
break;
case OCS_EVT_NODE_ACTIVE_IO_LIST_EMPTY:
case OCS_EVT_ALL_CHILD_NODES_FREE: {
if (ocs_node_active_ios_empty(node) &&
ocs_els_io_list_empty(node, &node->els_io_active_list)) {
ocs_node_transition(node, __ocs_node_shutdown, 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:
ocs_log_debug(ocs, "[%s] %-20s\n", node->display_name, ocs_sm_event_name(evt));
break;
case OCS_EVT_DOMAIN_ATTACH_OK:
/* don't care about domain_attach_ok */
break;
default:
__ocs_node_common(__func__, ctx, evt, arg);
return NULL;
}
return NULL;
}
/**
* @ingroup node_common
* @brief state: common node event handler
*
* Handle common/shared node events
*
* @param funcname calling function's name
* @param ctx remote node sm context
* @param evt event to process
* @param arg per event optional argument
*
* @return returns NULL
*/
void *
__ocs_node_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_node_cb_t *cbdata = arg;
ocs_assert(ctx, NULL);
ocs_assert(ctx->app, NULL);
node = ctx->app;
ocs_assert(node->ocs, NULL);
ocs = node->ocs;
switch(evt) {
case OCS_EVT_ENTER:
case OCS_EVT_REENTER:
case OCS_EVT_EXIT:
case OCS_EVT_SPORT_TOPOLOGY_NOTIFY:
case OCS_EVT_NODE_MISSING:
case OCS_EVT_FCP_CMD_RCVD:
break;
case OCS_EVT_NODE_REFOUND:
node->refound = 1;
break;
/* node->attached must be set appropriately for all node attach/detach events */
case OCS_EVT_NODE_ATTACH_OK:
node->attached = TRUE;
break;
case OCS_EVT_NODE_FREE_OK:
case OCS_EVT_NODE_ATTACH_FAIL:
node->attached = FALSE;
break;
/* handle any ELS completions that other states either didn't care about
* or forgot about
*/
case OCS_EVT_SRRS_ELS_CMPL_OK:
case OCS_EVT_SRRS_ELS_CMPL_FAIL:
ocs_assert(node->els_cmpl_cnt, NULL);
node->els_cmpl_cnt--;
break;
/* handle any ELS request completions that other states either didn't care about
* or forgot about
*/
case OCS_EVT_SRRS_ELS_REQ_OK:
case OCS_EVT_SRRS_ELS_REQ_FAIL:
case OCS_EVT_SRRS_ELS_REQ_RJT:
case OCS_EVT_ELS_REQ_ABORTED:
ocs_assert(node->els_req_cnt, NULL);
node->els_req_cnt--;
break;
case OCS_EVT_ELS_RCVD: {
fc_header_t *hdr = cbdata->header->dma.virt;
/* Unsupported ELS was received, send LS_RJT, command not supported */
ocs_log_debug(ocs, "[%s] (%s) ELS x%02x, LS_RJT not supported\n",
node->display_name, funcname, ((uint8_t*)cbdata->payload->dma.virt)[0]);
ocs_send_ls_rjt(cbdata->io, ocs_be16toh(hdr->ox_id),
FC_REASON_COMMAND_NOT_SUPPORTED, FC_EXPL_NO_ADDITIONAL, 0,
NULL, NULL);
break;
}
case OCS_EVT_PLOGI_RCVD:
case OCS_EVT_FLOGI_RCVD:
case OCS_EVT_LOGO_RCVD:
case OCS_EVT_PRLI_RCVD:
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;
/* sm: / send ELS_RJT */
ocs_log_debug(ocs, "[%s] (%s) %s sending ELS_RJT\n",
node->display_name, funcname, ocs_sm_event_name(evt));
/* if we didn't catch this in a state, send generic LS_RJT */
ocs_send_ls_rjt(cbdata->io, ocs_be16toh(hdr->ox_id),
FC_REASON_UNABLE_TO_PERFORM, FC_EXPL_NO_ADDITIONAL, 0,
NULL, NULL);
break;
}
case OCS_EVT_GID_PT_RCVD:
case OCS_EVT_RFT_ID_RCVD:
case OCS_EVT_RFF_ID_RCVD: {
fc_header_t *hdr = cbdata->header->dma.virt;
ocs_log_debug(ocs, "[%s] (%s) %s sending CT_REJECT\n",
node->display_name, funcname, ocs_sm_event_name(evt));
ocs_send_ct_rsp(cbdata->io, hdr->ox_id, cbdata->payload->dma.virt, FCCT_HDR_CMDRSP_REJECT, FCCT_COMMAND_NOT_SUPPORTED, 0);
break;
}
case OCS_EVT_ABTS_RCVD: {
fc_header_t *hdr = cbdata->header->dma.virt;
ocs_log_debug(ocs, "[%s] (%s) %s sending BA_ACC\n",
node->display_name, funcname, ocs_sm_event_name(evt));
/* sm: send BA_ACC */
ocs_bls_send_acc_hdr(cbdata->io, hdr);
break;
}
default:
ocs_log_test(node->ocs, "[%s] %-20s %-20s not handled\n", node->display_name, funcname,
ocs_sm_event_name(evt));
break;
}
return NULL;
}
/**
* @ingroup node_common
* @brief save node service parameters
*
* Service parameters are copyed into the node structure
*
* @param node pointer to node structure
* @param payload pointer to service parameters to save
*
* @return none
*/
void
ocs_node_save_sparms(ocs_node_t *node, void *payload)
{
ocs_memcpy(node->service_params, payload, sizeof(node->service_params));
}
/**
* @ingroup node_common
* @brief Post event to node state machine context
*
* This is used by the node state machine code to post events to the nodes. Upon
* completion of the event posting, if the nesting depth is zero and we're not holding
* inbound frames, then the pending frames are processed.
*
* @param node pointer to node
* @param evt event to post
* @param arg event posting argument
*
* @return none
*/
void
ocs_node_post_event(ocs_node_t *node, ocs_sm_event_t evt, void *arg)
{
int free_node = FALSE;
ocs_assert(node);
ocs_node_lock(node);
node->evtdepth ++;
ocs_sm_post_event(&node->sm, evt, arg);
/* If our event call depth is one and we're not holding frames
* then we can dispatch any pending frames. We don't want to allow
* the ocs_process_node_pending() call to recurse.
*/
if (!node->hold_frames && (node->evtdepth == 1)) {
ocs_process_node_pending(node);
}
node->evtdepth --;
/* Free the node object if so requested, and we're at an event
* call depth of zero
*/
if ((node->evtdepth == 0) && node->req_free) {
free_node = TRUE;
}
ocs_node_unlock(node);
if (free_node) {
ocs_node_free(node);
}
return;
}
/**
* @ingroup node_common
* @brief transition state of a node
*
* The node's state is transitioned to the requested state. Entry/Exit
* events are posted as needed.
*
* @param node pointer to node
* @param state state to transition to
* @param data transition data
*
* @return none
*/
void
ocs_node_transition(ocs_node_t *node, ocs_sm_function_t state, void *data)
{
ocs_sm_ctx_t *ctx = &node->sm;
ocs_node_lock(node);
if (ctx->current_state == state) {
ocs_node_post_event(node, OCS_EVT_REENTER, data);
} else {
ocs_node_post_event(node, OCS_EVT_EXIT, data);
ctx->current_state = state;
ocs_node_post_event(node, OCS_EVT_ENTER, data);
}
ocs_node_unlock(node);
}
/**
* @ingroup node_common
* @brief build EUI formatted WWN
*
* Build a WWN given the somewhat transport agnostic iScsi naming specification, for FC
* use the eui. format, an ascii string such as: "eui.10000000C9A19501"
*
* @param buffer buffer to place formatted name into
* @param buffer_len length in bytes of the buffer
* @param eui_name cpu endian 64 bit WWN value
*
* @return none
*/
void
ocs_node_build_eui_name(char *buffer, uint32_t buffer_len, uint64_t eui_name)
{
ocs_memset(buffer, 0, buffer_len);
ocs_snprintf(buffer, buffer_len, "eui.%016llx", (unsigned long long)eui_name);
}
/**
* @ingroup node_common
* @brief return nodes' WWPN as a uint64_t
*
* The WWPN is computed from service parameters and returned as a uint64_t
*
* @param node pointer to node structure
*
* @return WWPN
*
*/
uint64_t
ocs_node_get_wwpn(ocs_node_t *node)
{
fc_plogi_payload_t *sp = (fc_plogi_payload_t*) node->service_params;
return (((uint64_t)ocs_be32toh(sp->port_name_hi) << 32ll) | (ocs_be32toh(sp->port_name_lo)));
}
/**
* @ingroup node_common
* @brief return nodes' WWNN as a uint64_t
*
* The WWNN is computed from service parameters and returned as a uint64_t
*
* @param node pointer to node structure
*
* @return WWNN
*
*/
uint64_t
ocs_node_get_wwnn(ocs_node_t *node)
{
fc_plogi_payload_t *sp = (fc_plogi_payload_t*) node->service_params;
return (((uint64_t)ocs_be32toh(sp->node_name_hi) << 32ll) | (ocs_be32toh(sp->node_name_lo)));
}
/**
* @brief Generate node ddump data
*
* Generates the node ddumpdata
*
* @param textbuf pointer to text buffer
* @param node pointer to node context
*
* @return Returns 0 on success, or a negative value on failure.
*/
int
ocs_ddump_node(ocs_textbuf_t *textbuf, ocs_node_t *node)
{
ocs_io_t *io;
ocs_io_t *els;
int retval = 0;
ocs_ddump_section(textbuf, "node", node->instance_index);
ocs_ddump_value(textbuf, "display_name", "%s", node->display_name);
ocs_ddump_value(textbuf, "current_state", "%s", node->current_state_name);
ocs_ddump_value(textbuf, "prev_state", "%s", node->prev_state_name);
ocs_ddump_value(textbuf, "current_evt", "%s", ocs_sm_event_name(node->current_evt));
ocs_ddump_value(textbuf, "prev_evt", "%s", ocs_sm_event_name(node->prev_evt));
ocs_ddump_value(textbuf, "indicator", "%#x", node->rnode.indicator);
ocs_ddump_value(textbuf, "fc_id", "%#06x", node->rnode.fc_id);
ocs_ddump_value(textbuf, "attached", "%d", node->rnode.attached);
ocs_ddump_value(textbuf, "hold_frames", "%d", node->hold_frames);
ocs_ddump_value(textbuf, "io_alloc_enabled", "%d", node->io_alloc_enabled);
ocs_ddump_value(textbuf, "shutdown_reason", "%d", node->shutdown_reason);
ocs_ddump_value(textbuf, "send_ls_acc", "%d", node->send_ls_acc);
ocs_ddump_value(textbuf, "ls_acc_did", "%d", node->ls_acc_did);
ocs_ddump_value(textbuf, "ls_acc_oxid", "%#04x", node->ls_acc_oxid);
ocs_ddump_value(textbuf, "req_free", "%d", node->req_free);
ocs_ddump_value(textbuf, "els_req_cnt", "%d", node->els_req_cnt);
ocs_ddump_value(textbuf, "els_cmpl_cnt", "%d", node->els_cmpl_cnt);
ocs_ddump_value(textbuf, "targ", "%d", node->targ);
ocs_ddump_value(textbuf, "init", "%d", node->init);
ocs_ddump_value(textbuf, "wwnn", "%s", node->wwnn);
ocs_ddump_value(textbuf, "wwpn", "%s", node->wwpn);
ocs_ddump_value(textbuf, "login_state", "%d", (node->sm.current_state == __ocs_d_device_ready) ? 1 : 0);
ocs_ddump_value(textbuf, "chained_io_count", "%d", node->chained_io_count);
ocs_ddump_value(textbuf, "abort_cnt", "%d", node->abort_cnt);
ocs_display_sparams(NULL, "node_sparams", 1, textbuf, node->service_params+4);
ocs_lock(&node->pend_frames_lock);
if (!ocs_list_empty(&node->pend_frames)) {
ocs_hw_sequence_t *frame;
ocs_ddump_section(textbuf, "pending_frames", 0);
ocs_list_foreach(&node->pend_frames, frame) {
fc_header_t *hdr;
char buf[128];
hdr = frame->header->dma.virt;
ocs_snprintf(buf, sizeof(buf), "%02x/%04x/%04x len %zu",
hdr->r_ctl, ocs_be16toh(hdr->ox_id), ocs_be16toh(hdr->rx_id),
frame->payload->dma.len);
ocs_ddump_value(textbuf, "frame", "%s", buf);
}
ocs_ddump_endsection(textbuf, "pending_frames", 0);
}
ocs_unlock(&node->pend_frames_lock);
ocs_scsi_ini_ddump(textbuf, OCS_SCSI_DDUMP_NODE, node);
ocs_scsi_tgt_ddump(textbuf, OCS_SCSI_DDUMP_NODE, node);
ocs_lock(&node->active_ios_lock);
ocs_ddump_section(textbuf, "active_ios", 0);
ocs_list_foreach(&node->active_ios, io) {
ocs_ddump_io(textbuf, io);
}
ocs_ddump_endsection(textbuf, "active_ios", 0);
ocs_ddump_section(textbuf, "els_io_pend_list", 0);
ocs_list_foreach(&node->els_io_pend_list, els) {
ocs_ddump_els(textbuf, els);
}
ocs_ddump_endsection(textbuf, "els_io_pend_list", 0);
ocs_ddump_section(textbuf, "els_io_active_list", 0);
ocs_list_foreach(&node->els_io_active_list, els) {
ocs_ddump_els(textbuf, els);
}
ocs_ddump_endsection(textbuf, "els_io_active_list", 0);
ocs_unlock(&node->active_ios_lock);
ocs_ddump_endsection(textbuf, "node", node->instance_index);
return retval;
}
/**
* @brief check ELS request completion
*
* Check ELS request completion event to make sure it's for the
* ELS request we expect. If not, invoke given common event
* handler and return an error.
*
* @param ctx state machine context
* @param evt ELS request event
* @param arg event argument
* @param cmd ELS command expected
* @param node_common_func common event handler to call if ELS
* doesn't match
* @param funcname function name that called this
*
* @return zero if ELS command matches, -1 otherwise
*/
int32_t
node_check_els_req(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg, uint8_t cmd, ocs_node_common_func_t node_common_func, const char *funcname)
{
ocs_node_t *node = NULL;
ocs_t *ocs = NULL;
ocs_node_cb_t *cbdata = arg;
fc_els_gen_t *els_gen = NULL;
ocs_assert(ctx, -1);
node = ctx->app;
ocs_assert(node, -1);
ocs = node->ocs;
ocs_assert(ocs, -1);
cbdata = arg;
ocs_assert(cbdata, -1);
ocs_assert(cbdata->els, -1);
els_gen = (fc_els_gen_t *)cbdata->els->els_req.virt;
ocs_assert(els_gen, -1);
if ((cbdata->els->hio_type != OCS_HW_ELS_REQ) || (els_gen->command_code != cmd)) {
if (cbdata->els->hio_type != OCS_HW_ELS_REQ) {
ocs_log_debug(node->ocs, "[%s] %-20s expecting ELS cmd=x%x received type=%d\n",
node->display_name, funcname, cmd, cbdata->els->hio_type);
} else {
ocs_log_debug(node->ocs, "[%s] %-20s expecting ELS cmd=x%x received cmd=x%x\n",
node->display_name, funcname, cmd, els_gen->command_code);
}
/* send event to common handler */
node_common_func(funcname, ctx, evt, arg);
return -1;
}
return 0;
}
/**
* @brief check NS request completion
*
* Check ELS request completion event to make sure it's for the
* nameserver request we expect. If not, invoke given common
* event handler and return an error.
*
* @param ctx state machine context
* @param evt ELS request event
* @param arg event argument
* @param cmd nameserver command expected
* @param node_common_func common event handler to call if
* nameserver cmd doesn't match
* @param funcname function name that called this
*
* @return zero if NS command matches, -1 otherwise
*/
int32_t
node_check_ns_req(ocs_sm_ctx_t *ctx, ocs_sm_event_t evt, void *arg, uint32_t cmd, ocs_node_common_func_t node_common_func, const char *funcname)
{
ocs_node_t *node = NULL;
ocs_t *ocs = NULL;
ocs_node_cb_t *cbdata = arg;
fcct_iu_header_t *fcct = NULL;
ocs_assert(ctx, -1);
node = ctx->app;
ocs_assert(node, -1);
ocs = node->ocs;
ocs_assert(ocs, -1);
cbdata = arg;
ocs_assert(cbdata, -1);
ocs_assert(cbdata->els, -1);
fcct = (fcct_iu_header_t *)cbdata->els->els_req.virt;
ocs_assert(fcct, -1);
if ((cbdata->els->hio_type != OCS_HW_FC_CT) || fcct->cmd_rsp_code != ocs_htobe16(cmd)) {
if (cbdata->els->hio_type != OCS_HW_FC_CT) {
ocs_log_debug(node->ocs, "[%s] %-20s expecting NS cmd=x%x received type=%d\n",
node->display_name, funcname, cmd, cbdata->els->hio_type);
} else {
ocs_log_debug(node->ocs, "[%s] %-20s expecting NS cmd=x%x received cmd=x%x\n",
node->display_name, funcname, cmd, fcct->cmd_rsp_code);
}
/* send event to common handler */
node_common_func(funcname, ctx, evt, arg);
return -1;
}
return 0;
}
void
ocs_mgmt_node_list(ocs_textbuf_t *textbuf, void *object)
{
ocs_io_t *io;
ocs_node_t *node = (ocs_node_t *)object;
ocs_mgmt_start_section(textbuf, "node", node->instance_index);
/* Readonly values */
ocs_mgmt_emit_property_name(textbuf, MGMT_MODE_RD, "display_name");
ocs_mgmt_emit_property_name(textbuf, MGMT_MODE_RD, "indicator");
ocs_mgmt_emit_property_name(textbuf, MGMT_MODE_RD, "fc_id");
ocs_mgmt_emit_property_name(textbuf, MGMT_MODE_RD, "attached");
ocs_mgmt_emit_property_name(textbuf, MGMT_MODE_RD, "hold_frames");
ocs_mgmt_emit_property_name(textbuf, MGMT_MODE_RD, "shutting_down");
ocs_mgmt_emit_property_name(textbuf, MGMT_MODE_RD, "req_free");
ocs_mgmt_emit_property_name(textbuf, MGMT_MODE_RD, "ox_id");
ocs_mgmt_emit_property_name(textbuf, MGMT_MODE_RD, "ox_id_in_use");
ocs_mgmt_emit_property_name(textbuf, MGMT_MODE_RD, "abort_cnt");
ocs_mgmt_emit_property_name(textbuf, MGMT_MODE_RD, "targ");
ocs_mgmt_emit_property_name(textbuf, MGMT_MODE_RD, "init");
ocs_mgmt_emit_property_name(textbuf, MGMT_MODE_RD, "wwpn");
ocs_mgmt_emit_property_name(textbuf, MGMT_MODE_RD, "wwnn");
ocs_mgmt_emit_property_name(textbuf, MGMT_MODE_RD, "pend_frames");
ocs_mgmt_emit_property_name(textbuf, MGMT_MODE_RD, "chained_io_count");
/* Actions */
ocs_mgmt_emit_property_name(textbuf, MGMT_MODE_EX, "resume");
ocs_lock(&node->active_ios_lock);
ocs_list_foreach(&node->active_ios, io) {
if ((io->mgmt_functions) && (io->mgmt_functions->get_list_handler)) {
io->mgmt_functions->get_list_handler(textbuf, io);
}
}
ocs_unlock(&node->active_ios_lock);
ocs_mgmt_end_section(textbuf, "node", node->instance_index);
}
int
ocs_mgmt_node_get(ocs_textbuf_t *textbuf, char *parent, char *name, void *object)
{
ocs_io_t *io;
ocs_node_t *node = (ocs_node_t *)object;
char qualifier[80];
int retval = -1;
ocs_mgmt_start_section(textbuf, "node", node->instance_index);
ocs_snprintf(qualifier, sizeof(qualifier), "%s/node[%d]", parent, node->instance_index);
/* If it doesn't start with my qualifier I don't know what to do with it */
if (ocs_strncmp(name, qualifier, strlen(qualifier)) == 0) {
char *unqualified_name = name + strlen(qualifier) +1;
/* See if it's a value I can supply */
if (ocs_strcmp(unqualified_name, "display_name") == 0) {
ocs_mgmt_emit_string(textbuf, MGMT_MODE_RD, "display_name", node->display_name);
retval = 0;
} else if (ocs_strcmp(unqualified_name, "indicator") == 0) {
ocs_mgmt_emit_int(textbuf, MGMT_MODE_RD, "indicator", "0x%x", node->rnode.indicator);
retval = 0;
} else if (ocs_strcmp(unqualified_name, "fc_id") == 0) {
ocs_mgmt_emit_int(textbuf, MGMT_MODE_RD, "fc_id", "0x%06x", node->rnode.fc_id);
retval = 0;
} else if (ocs_strcmp(unqualified_name, "attached") == 0) {
ocs_mgmt_emit_boolean(textbuf, MGMT_MODE_RD, "attached", node->rnode.attached);
retval = 0;
} else if (ocs_strcmp(unqualified_name, "hold_frames") == 0) {
ocs_mgmt_emit_boolean(textbuf, MGMT_MODE_RD, "hold_frames", node->hold_frames);
retval = 0;
} else if (ocs_strcmp(unqualified_name, "io_alloc_enabled") == 0) {
ocs_mgmt_emit_boolean(textbuf, MGMT_MODE_RD, "io_alloc_enabled", node->io_alloc_enabled);
retval = 0;
} else if (ocs_strcmp(unqualified_name, "req_free") == 0) {
ocs_mgmt_emit_boolean(textbuf, MGMT_MODE_RD, "req_free", node->req_free);
retval = 0;
} else if (ocs_strcmp(unqualified_name, "ls_acc_oxid") == 0) {
ocs_mgmt_emit_int(textbuf, MGMT_MODE_RD, "ls_acc_oxid", "0x%#04x", node->ls_acc_oxid);
retval = 0;
} else if (ocs_strcmp(unqualified_name, "ls_acc_did") == 0) {
ocs_mgmt_emit_int(textbuf, MGMT_MODE_RD, "ls_acc_did", "0x%#04x", node->ls_acc_did);
retval = 0;
} else if (ocs_strcmp(unqualified_name, "abort_cnt") == 0) {
ocs_mgmt_emit_int(textbuf, MGMT_MODE_RD, "abort_cnt", "%d", node->abort_cnt);
retval = 0;
} else if (ocs_strcmp(unqualified_name, "targ") == 0) {
ocs_mgmt_emit_boolean(textbuf, MGMT_MODE_RD, "targ", node->targ);
retval = 0;
} else if (ocs_strcmp(unqualified_name, "init") == 0) {
ocs_mgmt_emit_boolean(textbuf, MGMT_MODE_RD, "init", node->init);
retval = 0;
} else if (ocs_strcmp(unqualified_name, "wwpn") == 0) {
ocs_mgmt_emit_int(textbuf, MGMT_MODE_RD, "wwpn", "%s", node->wwpn);
retval = 0;
} else if (ocs_strcmp(unqualified_name, "wwnn") == 0) {
ocs_mgmt_emit_int(textbuf, MGMT_MODE_RD, "wwnn", "%s", node->wwnn);
retval = 0;
} else if (ocs_strcmp(unqualified_name, "current_state") == 0) {
ocs_mgmt_emit_string(textbuf, MGMT_MODE_RD, "current_state", node->current_state_name);
retval = 0;
} else if (ocs_strcmp(unqualified_name, "login_state") == 0) {
ocs_mgmt_emit_int(textbuf, MGMT_MODE_RD, "login_state", "%d", (node->sm.current_state == __ocs_d_device_ready) ? 1 : 0);
retval = 0;
} else if (ocs_strcmp(unqualified_name, "pend_frames") == 0) {
ocs_hw_sequence_t *frame;
ocs_lock(&node->pend_frames_lock);
ocs_list_foreach(&node->pend_frames, frame) {
fc_header_t *hdr;
char buf[128];
hdr = frame->header->dma.virt;
ocs_snprintf(buf, sizeof(buf), "%02x/%04x/%04x len %zu", hdr->r_ctl,
ocs_be16toh(hdr->ox_id), ocs_be16toh(hdr->rx_id),
frame->payload->dma.len);
ocs_mgmt_emit_string(textbuf, MGMT_MODE_RD, "pend_frames", buf);
}
ocs_unlock(&node->pend_frames_lock);
retval = 0;
} else if (ocs_strcmp(unqualified_name, "chained_io_count") == 0) {
ocs_mgmt_emit_int(textbuf, MGMT_MODE_RD, "chained_io_count", "%d", node->chained_io_count);
retval = 0;
} else {
/* If I didn't know the value of this status pass the request to each of my children */
ocs_lock(&node->active_ios_lock);
ocs_list_foreach(&node->active_ios, io) {
if ((io->mgmt_functions) && (io->mgmt_functions->get_handler)) {
retval = io->mgmt_functions->get_handler(textbuf, qualifier, name, io);
}
if (retval == 0) {
break;
}
}
ocs_unlock(&node->active_ios_lock);
}
}
ocs_mgmt_end_section(textbuf, "node", node->instance_index);
return retval;
}
void
ocs_mgmt_node_get_all(ocs_textbuf_t *textbuf, void *object)
{
ocs_io_t *io;
ocs_node_t *node = (ocs_node_t *)object;
ocs_hw_sequence_t *frame;
ocs_mgmt_start_section(textbuf, "node", node->instance_index);
ocs_mgmt_emit_string(textbuf, MGMT_MODE_RD, "display_name", node->display_name);
ocs_mgmt_emit_int(textbuf, MGMT_MODE_RD, "indicator", "0x%x", node->rnode.indicator);
ocs_mgmt_emit_int(textbuf, MGMT_MODE_RD, "fc_id", "0x%06x", node->rnode.fc_id);
ocs_mgmt_emit_boolean(textbuf, MGMT_MODE_RD, "attached", node->rnode.attached);
ocs_mgmt_emit_boolean(textbuf, MGMT_MODE_RD, "hold_frames", node->hold_frames);
ocs_mgmt_emit_boolean(textbuf, MGMT_MODE_RD, "io_alloc_enabled", node->io_alloc_enabled);
ocs_mgmt_emit_boolean(textbuf, MGMT_MODE_RD, "req_free", node->req_free);
ocs_mgmt_emit_int(textbuf, MGMT_MODE_RD, "ls_acc_oxid", "0x%#04x", node->ls_acc_oxid);
ocs_mgmt_emit_int(textbuf, MGMT_MODE_RD, "ls_acc_did", "0x%#04x", node->ls_acc_did);
ocs_mgmt_emit_int(textbuf, MGMT_MODE_RD, "abort_cnt", "%d", node->abort_cnt);
ocs_mgmt_emit_boolean(textbuf, MGMT_MODE_RD, "targ", node->targ);
ocs_mgmt_emit_boolean(textbuf, MGMT_MODE_RD, "init", node->init);
ocs_mgmt_emit_int(textbuf, MGMT_MODE_RD, "wwpn", "%s", node->wwpn);
ocs_mgmt_emit_int(textbuf, MGMT_MODE_RD, "wwnn", "%s", node->wwnn);
ocs_lock(&node->pend_frames_lock);
ocs_list_foreach(&node->pend_frames, frame) {
fc_header_t *hdr;
char buf[128];
hdr = frame->header->dma.virt;
ocs_snprintf(buf, sizeof(buf), "%02x/%04x/%04x len %zu", hdr->r_ctl,
ocs_be16toh(hdr->ox_id), ocs_be16toh(hdr->rx_id),
frame->payload->dma.len);
ocs_mgmt_emit_string(textbuf, MGMT_MODE_RD, "pend_frames", buf);
}
ocs_unlock(&node->pend_frames_lock);
ocs_mgmt_emit_int(textbuf, MGMT_MODE_RD, "chained_io_count", "%d", node->chained_io_count);
ocs_mgmt_emit_property_name(textbuf, MGMT_MODE_EX, "resume");
ocs_mgmt_emit_string(textbuf, MGMT_MODE_RD, "current_state", node->current_state_name);
ocs_mgmt_emit_int(textbuf, MGMT_MODE_RD, "login_state", "%d", (node->sm.current_state == __ocs_d_device_ready) ? 1 : 0);
ocs_lock(&node->active_ios_lock);
ocs_list_foreach(&node->active_ios, io) {
if ((io->mgmt_functions) && (io->mgmt_functions->get_all_handler)) {
io->mgmt_functions->get_all_handler(textbuf,io);
}
}
ocs_unlock(&node->active_ios_lock);
ocs_mgmt_end_section(textbuf, "node", node->instance_index);
}
int
ocs_mgmt_node_set(char *parent, char *name, char *value, void *object)
{
ocs_io_t *io;
ocs_node_t *node = (ocs_node_t *)object;
char qualifier[80];
int retval = -1;
ocs_snprintf(qualifier, sizeof(qualifier), "%s/node[%d]", parent, node->instance_index);
/* If it doesn't start with my qualifier I don't know what to do with it */
if (ocs_strncmp(name, qualifier, strlen(qualifier)) == 0) {
ocs_lock(&node->active_ios_lock);
ocs_list_foreach(&node->active_ios, io) {
if ((io->mgmt_functions) && (io->mgmt_functions->set_handler)) {
retval = io->mgmt_functions->set_handler(qualifier, name, value, io);
}
if (retval == 0) {
break;
}
}
ocs_unlock(&node->active_ios_lock);
}
return retval;
}
int
ocs_mgmt_node_exec(char *parent, char *action, void *arg_in, uint32_t arg_in_length,
void *arg_out, uint32_t arg_out_length, void *object)
{
ocs_io_t *io;
ocs_node_t *node = (ocs_node_t *)object;
char qualifier[80];
int retval = -1;
ocs_snprintf(qualifier, sizeof(qualifier), "%s.node%d", parent, node->instance_index);
/* If it doesn't start with my qualifier I don't know what to do with it */
if (ocs_strncmp(action, qualifier, strlen(qualifier)) == 0) {
char *unqualified_name = action + strlen(qualifier) +1;
if (ocs_strcmp(unqualified_name, "resume") == 0) {
ocs_node_post_event(node, OCS_EVT_RESUME, NULL);
}
{
/* If I didn't know how to do this action pass the request to each of my children */
ocs_lock(&node->active_ios_lock);
ocs_list_foreach(&node->active_ios, io) {
if ((io->mgmt_functions) && (io->mgmt_functions->exec_handler)) {
retval = io->mgmt_functions->exec_handler(qualifier, action, arg_in, arg_in_length,
arg_out, arg_out_length, io);
}
if (retval == 0) {
break;
}
}
ocs_unlock(&node->active_ios_lock);
}
}
return retval;
}
/**
* @brief Return TRUE if active ios list is empty
*
* Test if node->active_ios list is empty while holding the node->active_ios_lock.
*
* @param node pointer to node object
*
* @return TRUE if node active ios list is empty
*/
int
ocs_node_active_ios_empty(ocs_node_t *node)
{
int empty;
ocs_lock(&node->active_ios_lock);
empty = ocs_list_empty(&node->active_ios);
ocs_unlock(&node->active_ios_lock);
return empty;
}
/**
* @brief Pause a node
*
* The node is placed in the __ocs_node_paused state after saving the state
* to return to
*
* @param node Pointer to node object
* @param state State to resume to
*
* @return none
*/
void
ocs_node_pause(ocs_node_t *node, ocs_sm_function_t state)
{
node->nodedb_state = state;
ocs_node_transition(node, __ocs_node_paused, NULL);
}
/**
* @brief Paused node state
*
* This state is entered when a state is "paused". When resumed, the node
* is transitioned to a previously saved state (node->ndoedb_state)
*
* @param ctx Remote node state machine context.
* @param evt Event to process.
* @param arg Per event optional argument.
*
* @return returns NULL
*/
void *
__ocs_node_paused(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:
node_printf(node, "Paused\n");
break;
case OCS_EVT_RESUME: {
ocs_sm_function_t pf = node->nodedb_state;
node->nodedb_state = NULL;
ocs_node_transition(node, pf, NULL);
break;
}
case OCS_EVT_DOMAIN_ATTACH_OK:
break;
case OCS_EVT_SHUTDOWN:
node->req_free = 1;
break;
default:
__ocs_node_common(__func__, ctx, evt, arg);
break;
}
return NULL;
}
/**
* @brief Resume a paused state
*
* Posts a resume event to the paused node.
*
* @param node Pointer to node object
*
* @return returns 0 for success, a negative error code value for failure.
*/
int32_t
ocs_node_resume(ocs_node_t *node)
{
ocs_assert(node != NULL, -1);
ocs_node_post_event(node, OCS_EVT_RESUME, NULL);
return 0;
}
/**
* @ingroup node_common
* @brief Dispatch a ELS frame.
*
* <h3 class="desc">Description</h3>
* An ELS frame is dispatched to the \c node state machine.
* RQ Pair mode: this function is always called with a NULL hw
* io.
*
* @param node Node that originated the frame.
* @param seq header/payload sequence buffers
*
* @return Returns 0 if frame processed and RX buffers cleaned
* up appropriately, -1 if frame not handled and RX buffers need
* to be returned.
*/
int32_t
ocs_node_recv_els_frame(ocs_node_t *node, ocs_hw_sequence_t *seq)
{
struct {
uint32_t cmd;
ocs_sm_event_t evt;
uint32_t payload_size;
} els_cmd_list[] = {
{FC_ELS_CMD_PLOGI, OCS_EVT_PLOGI_RCVD, sizeof(fc_plogi_payload_t)},
{FC_ELS_CMD_FLOGI, OCS_EVT_FLOGI_RCVD, sizeof(fc_plogi_payload_t)},
{FC_ELS_CMD_LOGO, OCS_EVT_LOGO_RCVD, sizeof(fc_acc_payload_t)},
{FC_ELS_CMD_RRQ, OCS_EVT_RRQ_RCVD, sizeof(fc_acc_payload_t)},
{FC_ELS_CMD_PRLI, OCS_EVT_PRLI_RCVD, sizeof(fc_prli_payload_t)},
{FC_ELS_CMD_PRLO, OCS_EVT_PRLO_RCVD, sizeof(fc_prlo_payload_t)},
{FC_ELS_CMD_PDISC, OCS_EVT_PDISC_RCVD, MAX_ACC_REJECT_PAYLOAD},
{FC_ELS_CMD_FDISC, OCS_EVT_FDISC_RCVD, MAX_ACC_REJECT_PAYLOAD},
{FC_ELS_CMD_ADISC, OCS_EVT_ADISC_RCVD, sizeof(fc_adisc_payload_t)},
{FC_ELS_CMD_RSCN, OCS_EVT_RSCN_RCVD, MAX_ACC_REJECT_PAYLOAD},
{FC_ELS_CMD_SCR , OCS_EVT_SCR_RCVD, MAX_ACC_REJECT_PAYLOAD},
};
ocs_t *ocs = node->ocs;
ocs_node_cb_t cbdata;
fc_header_t *hdr = seq->header->dma.virt;
uint8_t *buf = seq->payload->dma.virt;
ocs_sm_event_t evt = OCS_EVT_ELS_RCVD;
uint32_t payload_size = MAX_ACC_REJECT_PAYLOAD;
uint32_t i;
ocs_memset(&cbdata, 0, sizeof(cbdata));
cbdata.header = seq->header;
cbdata.payload = seq->payload;
/* find a matching event for the ELS command */
for (i = 0; i < ARRAY_SIZE(els_cmd_list); i ++) {
if (els_cmd_list[i].cmd == buf[0]) {
evt = els_cmd_list[i].evt;
payload_size = els_cmd_list[i].payload_size;
break;
}
}
switch(evt) {
case OCS_EVT_FLOGI_RCVD:
ocs_display_sparams(node->display_name, "flogi rcvd req", 0, NULL, ((uint8_t*)seq->payload->dma.virt)+4);
break;
case OCS_EVT_FDISC_RCVD:
ocs_display_sparams(node->display_name, "fdisc rcvd req", 0, NULL, ((uint8_t*)seq->payload->dma.virt)+4);
break;
case OCS_EVT_PLOGI_RCVD:
ocs_display_sparams(node->display_name, "plogi rcvd req", 0, NULL, ((uint8_t*)seq->payload->dma.virt)+4);
break;
default:
break;
}
cbdata.io = ocs_els_io_alloc(node, payload_size, OCS_ELS_ROLE_RESPONDER);
if (cbdata.io != NULL) {
cbdata.io->hw_priv = seq->hw_priv;
/* if we're here, sequence initiative has been transferred */
cbdata.io->seq_init = 1;
ocs_node_post_event(node, evt, &cbdata);
} else {
node_printf(node, "failure to allocate SCSI IO for ELS s_id %06x d_id %06x ox_id %04x rx_id %04x\n",
fc_be24toh(hdr->s_id), fc_be24toh(hdr->d_id), ocs_be16toh(hdr->ox_id), ocs_be16toh(hdr->rx_id));
}
ocs_hw_sequence_free(&ocs->hw, seq);
return 0;
}
/**
* @ingroup node_common
* @brief Dispatch a ABTS frame (RQ Pair/sequence coalescing).
*
* <h3 class="desc">Description</h3>
* An ABTS frame is dispatched to the node state machine. This
* function is used for both RQ Pair and sequence coalescing.
*
* @param node Node that originated the frame.
* @param seq Header/payload sequence buffers
*
* @return Returns 0 if frame processed and RX buffers cleaned
* up appropriately, -1 if frame not handled and RX buffers need
* to be returned.
*/
int32_t
ocs_node_recv_abts_frame(ocs_node_t *node, ocs_hw_sequence_t *seq)
{
ocs_t *ocs = node->ocs;
ocs_xport_t *xport = ocs->xport;
fc_header_t *hdr = seq->header->dma.virt;
uint16_t ox_id = ocs_be16toh(hdr->ox_id);
uint16_t rx_id = ocs_be16toh(hdr->rx_id);
ocs_node_cb_t cbdata;
int32_t rc = 0;
node->abort_cnt++;
/*
* Check to see if the IO we want to abort is active, if it not active,
* then we can send the BA_ACC using the send frame option
*/
if (ocs_io_find_tgt_io(ocs, node, ox_id, rx_id) == NULL) {
uint32_t send_frame_capable;
ocs_log_debug(ocs, "IO not found (ox_id %04x)\n", ox_id);
/* If we have SEND_FRAME capability, then use it to send BA_ACC */
rc = ocs_hw_get(&ocs->hw, OCS_HW_SEND_FRAME_CAPABLE, &send_frame_capable);
if ((rc == 0) && send_frame_capable) {
rc = ocs_sframe_send_bls_acc(node, seq);
if (rc) {
ocs_log_test(ocs, "ocs_bls_acc_send_frame failed\n");
}
return rc;
}
/* continuing */
}
ocs_memset(&cbdata, 0, sizeof(cbdata));
cbdata.header = seq->header;
cbdata.payload = seq->payload;
cbdata.io = ocs_scsi_io_alloc(node, OCS_SCSI_IO_ROLE_RESPONDER);
if (cbdata.io != NULL) {
cbdata.io->hw_priv = seq->hw_priv;
/* If we got this far, SIT=1 */
cbdata.io->seq_init = 1;
/* fill out generic fields */
cbdata.io->ocs = ocs;
cbdata.io->node = node;
cbdata.io->cmd_tgt = TRUE;
ocs_node_post_event(node, OCS_EVT_ABTS_RCVD, &cbdata);
} else {
ocs_atomic_add_return(&xport->io_alloc_failed_count, 1);
node_printf(node, "SCSI IO allocation failed for ABTS received s_id %06x d_id %06x ox_id %04x rx_id %04x\n",
fc_be24toh(hdr->s_id), fc_be24toh(hdr->d_id), ocs_be16toh(hdr->ox_id), ocs_be16toh(hdr->rx_id));
}
/* ABTS processed, return RX buffer to the chip */
ocs_hw_sequence_free(&ocs->hw, seq);
return 0;
}
/**
* @ingroup node_common
* @brief Dispatch a CT frame.
*
* <h3 class="desc">Description</h3>
* A CT frame is dispatched to the \c node state machine.
* RQ Pair mode: this function is always called with a NULL hw
* io.
*
* @param node Node that originated the frame.
* @param seq header/payload sequence buffers
*
* @return Returns 0 if frame processed and RX buffers cleaned
* up appropriately, -1 if frame not handled and RX buffers need
* to be returned.
*/
int32_t
ocs_node_recv_ct_frame(ocs_node_t *node, ocs_hw_sequence_t *seq)
{
ocs_t *ocs = node->ocs;
fc_header_t *hdr = seq->header->dma.virt;
fcct_iu_header_t *iu = seq->payload->dma.virt;
ocs_sm_event_t evt = OCS_EVT_ELS_RCVD;
uint32_t payload_size = MAX_ACC_REJECT_PAYLOAD;
uint16_t gscmd = ocs_be16toh(iu->cmd_rsp_code);
ocs_node_cb_t cbdata;
uint32_t i;
struct {
uint32_t cmd;
ocs_sm_event_t evt;
uint32_t payload_size;
} ct_cmd_list[] = {
{FC_GS_NAMESERVER_RFF_ID, OCS_EVT_RFF_ID_RCVD, 100},
{FC_GS_NAMESERVER_RFT_ID, OCS_EVT_RFT_ID_RCVD, 100},
{FC_GS_NAMESERVER_GNN_ID, OCS_EVT_GNN_ID_RCVD, 100},
{FC_GS_NAMESERVER_GPN_ID, OCS_EVT_GPN_ID_RCVD, 100},
{FC_GS_NAMESERVER_GFPN_ID, OCS_EVT_GFPN_ID_RCVD, 100},
{FC_GS_NAMESERVER_GFF_ID, OCS_EVT_GFF_ID_RCVD, 100},
{FC_GS_NAMESERVER_GID_FT, OCS_EVT_GID_FT_RCVD, 256},
{FC_GS_NAMESERVER_GID_PT, OCS_EVT_GID_PT_RCVD, 256},
{FC_GS_NAMESERVER_RPN_ID, OCS_EVT_RPN_ID_RCVD, 100},
{FC_GS_NAMESERVER_RNN_ID, OCS_EVT_RNN_ID_RCVD, 100},
{FC_GS_NAMESERVER_RCS_ID, OCS_EVT_RCS_ID_RCVD, 100},
{FC_GS_NAMESERVER_RSNN_NN, OCS_EVT_RSNN_NN_RCVD, 100},
{FC_GS_NAMESERVER_RSPN_ID, OCS_EVT_RSPN_ID_RCVD, 100},
{FC_GS_NAMESERVER_RHBA, OCS_EVT_RHBA_RCVD, 100},
{FC_GS_NAMESERVER_RPA, OCS_EVT_RPA_RCVD, 100},
};
ocs_memset(&cbdata, 0, sizeof(cbdata));
cbdata.header = seq->header;
cbdata.payload = seq->payload;
/* find a matching event for the ELS/GS command */
for (i = 0; i < ARRAY_SIZE(ct_cmd_list); i ++) {
if (ct_cmd_list[i].cmd == gscmd) {
evt = ct_cmd_list[i].evt;
payload_size = ct_cmd_list[i].payload_size;
break;
}
}
/* Allocate an IO and send a reject */
cbdata.io = ocs_els_io_alloc(node, payload_size, OCS_ELS_ROLE_RESPONDER);
if (cbdata.io == NULL) {
node_printf(node, "GS IO failed for s_id %06x d_id %06x ox_id %04x rx_id %04x\n",
fc_be24toh(hdr->s_id), fc_be24toh(hdr->d_id),
ocs_be16toh(hdr->ox_id), ocs_be16toh(hdr->rx_id));
return -1;
}
cbdata.io->hw_priv = seq->hw_priv;
ocs_node_post_event(node, evt, &cbdata);
ocs_hw_sequence_free(&ocs->hw, seq);
return 0;
}
/**
* @ingroup node_common
* @brief Dispatch a FCP command frame when the node is not ready.
*
* <h3 class="desc">Description</h3>
* A frame is dispatched to the \c node state machine.
*
* @param node Node that originated the frame.
* @param seq header/payload sequence buffers
*
* @return Returns 0 if frame processed and RX buffers cleaned
* up appropriately, -1 if frame not handled.
*/
int32_t
ocs_node_recv_fcp_cmd(ocs_node_t *node, ocs_hw_sequence_t *seq)
{
ocs_node_cb_t cbdata;
ocs_t *ocs = node->ocs;
ocs_memset(&cbdata, 0, sizeof(cbdata));
cbdata.header = seq->header;
cbdata.payload = seq->payload;
ocs_node_post_event(node, OCS_EVT_FCP_CMD_RCVD, &cbdata);
ocs_hw_sequence_free(&ocs->hw, seq);
return 0;
}
/**
* @ingroup node_common
* @brief Stub handler for non-ABTS BLS frames
*
* <h3 class="desc">Description</h3>
* Log message and drop. Customer can plumb it to their back-end as needed
*
* @param node Node that originated the frame.
* @param seq header/payload sequence buffers
*
* @return Returns 0
*/
int32_t
ocs_node_recv_bls_no_sit(ocs_node_t *node, ocs_hw_sequence_t *seq)
{
fc_header_t *hdr = seq->header->dma.virt;
node_printf(node, "Dropping frame hdr = %08x %08x %08x %08x %08x %08x\n",
ocs_htobe32(((uint32_t *)hdr)[0]),
ocs_htobe32(((uint32_t *)hdr)[1]),
ocs_htobe32(((uint32_t *)hdr)[2]),
ocs_htobe32(((uint32_t *)hdr)[3]),
ocs_htobe32(((uint32_t *)hdr)[4]),
ocs_htobe32(((uint32_t *)hdr)[5]));
return -1;
}
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