--- /dev/null
+/*
+ * BSD LICENSE
+ *
+ * Copyright (c) 2018-2019 Broadcom. All Rights Reserved.
+ * The term "Broadcom" refers to Broadcom Inc. 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:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * 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.
+ * * Neither the name of Intel Corporation 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
+ * OWNER 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.
+ */
+
+/*
+ * NVMe_FC transport functions.
+ */
+
+#include "spdk/env.h"
+#include "spdk/assert.h"
+#include "spdk/nvmf_transport.h"
+#include "spdk/string.h"
+#include "spdk/trace.h"
+#include "spdk/util.h"
+#include "spdk/likely.h"
+#include "spdk/endian.h"
+#include "spdk/log.h"
+#include "spdk/thread.h"
+
+#include "spdk_internal/log.h"
+
+#include "nvmf_fc.h"
+#include "fc_lld.h"
+
+#ifndef DEV_VERIFY
+#define DEV_VERIFY assert
+#endif
+
+#ifndef ASSERT_SPDK_FC_MASTER_THREAD
+#define ASSERT_SPDK_FC_MASTER_THREAD() \
+ DEV_VERIFY(spdk_get_thread() == nvmf_fc_get_master_thread());
+#endif
+
+/*
+ * PRLI service parameters
+ */
+enum spdk_nvmf_fc_service_parameters {
+ SPDK_NVMF_FC_FIRST_BURST_SUPPORTED = 0x0001,
+ SPDK_NVMF_FC_DISCOVERY_SERVICE = 0x0008,
+ SPDK_NVMF_FC_TARGET_FUNCTION = 0x0010,
+ SPDK_NVMF_FC_INITIATOR_FUNCTION = 0x0020,
+ SPDK_NVMF_FC_CONFIRMED_COMPLETION_SUPPORTED = 0x0080,
+};
+
+static char *fc_req_state_strs[] = {
+ "SPDK_NVMF_FC_REQ_INIT",
+ "SPDK_NVMF_FC_REQ_READ_BDEV",
+ "SPDK_NVMF_FC_REQ_READ_XFER",
+ "SPDK_NVMF_FC_REQ_READ_RSP",
+ "SPDK_NVMF_FC_REQ_WRITE_BUFFS",
+ "SPDK_NVMF_FC_REQ_WRITE_XFER",
+ "SPDK_NVMF_FC_REQ_WRITE_BDEV",
+ "SPDK_NVMF_FC_REQ_WRITE_RSP",
+ "SPDK_NVMF_FC_REQ_NONE_BDEV",
+ "SPDK_NVMF_FC_REQ_NONE_RSP",
+ "SPDK_NVMF_FC_REQ_SUCCESS",
+ "SPDK_NVMF_FC_REQ_FAILED",
+ "SPDK_NVMF_FC_REQ_ABORTED",
+ "SPDK_NVMF_FC_REQ_BDEV_ABORTED",
+ "SPDK_NVMF_FC_REQ_PENDING"
+};
+
+#define OBJECT_NVMF_FC_IO 0xA0
+
+#define TRACE_GROUP_NVMF_FC 0x8
+#define TRACE_FC_REQ_INIT SPDK_TPOINT_ID(TRACE_GROUP_NVMF_FC, 0x01)
+#define TRACE_FC_REQ_READ_BDEV SPDK_TPOINT_ID(TRACE_GROUP_NVMF_FC, 0x02)
+#define TRACE_FC_REQ_READ_XFER SPDK_TPOINT_ID(TRACE_GROUP_NVMF_FC, 0x03)
+#define TRACE_FC_REQ_READ_RSP SPDK_TPOINT_ID(TRACE_GROUP_NVMF_FC, 0x04)
+#define TRACE_FC_REQ_WRITE_BUFFS SPDK_TPOINT_ID(TRACE_GROUP_NVMF_FC, 0x05)
+#define TRACE_FC_REQ_WRITE_XFER SPDK_TPOINT_ID(TRACE_GROUP_NVMF_FC, 0x06)
+#define TRACE_FC_REQ_WRITE_BDEV SPDK_TPOINT_ID(TRACE_GROUP_NVMF_FC, 0x07)
+#define TRACE_FC_REQ_WRITE_RSP SPDK_TPOINT_ID(TRACE_GROUP_NVMF_FC, 0x08)
+#define TRACE_FC_REQ_NONE_BDEV SPDK_TPOINT_ID(TRACE_GROUP_NVMF_FC, 0x09)
+#define TRACE_FC_REQ_NONE_RSP SPDK_TPOINT_ID(TRACE_GROUP_NVMF_FC, 0x0A)
+#define TRACE_FC_REQ_SUCCESS SPDK_TPOINT_ID(TRACE_GROUP_NVMF_FC, 0x0B)
+#define TRACE_FC_REQ_FAILED SPDK_TPOINT_ID(TRACE_GROUP_NVMF_FC, 0x0C)
+#define TRACE_FC_REQ_ABORTED SPDK_TPOINT_ID(TRACE_GROUP_NVMF_FC, 0x0D)
+#define TRACE_FC_REQ_BDEV_ABORTED SPDK_TPOINT_ID(TRACE_GROUP_NVMF_FC, 0x0E)
+#define TRACE_FC_REQ_PENDING SPDK_TPOINT_ID(TRACE_GROUP_NVMF_FC, 0x0F)
+
+SPDK_TRACE_REGISTER_FN(nvmf_fc_trace, "nvmf_fc", TRACE_GROUP_NVMF_FC)
+{
+ spdk_trace_register_object(OBJECT_NVMF_FC_IO, 'r');
+ spdk_trace_register_description("FC_REQ_NEW",
+ TRACE_FC_REQ_INIT,
+ OWNER_NONE, OBJECT_NVMF_FC_IO, 1, 1, "");
+ spdk_trace_register_description("FC_REQ_READ_SUBMIT_TO_BDEV",
+ TRACE_FC_REQ_READ_BDEV,
+ OWNER_NONE, OBJECT_NVMF_FC_IO, 0, 1, "");
+ spdk_trace_register_description("FC_REQ_READ_XFER_DATA",
+ TRACE_FC_REQ_READ_XFER,
+ OWNER_NONE, OBJECT_NVMF_FC_IO, 0, 1, "");
+ spdk_trace_register_description("FC_REQ_READ_RSP",
+ TRACE_FC_REQ_READ_RSP,
+ OWNER_NONE, OBJECT_NVMF_FC_IO, 0, 1, "");
+ spdk_trace_register_description("FC_REQ_WRITE_NEED_BUFFER",
+ TRACE_FC_REQ_WRITE_BUFFS,
+ OWNER_NONE, OBJECT_NVMF_FC_IO, 0, 1, "");
+ spdk_trace_register_description("FC_REQ_WRITE_XFER_DATA",
+ TRACE_FC_REQ_WRITE_XFER,
+ OWNER_NONE, OBJECT_NVMF_FC_IO, 0, 1, "");
+ spdk_trace_register_description("FC_REQ_WRITE_SUBMIT_TO_BDEV",
+ TRACE_FC_REQ_WRITE_BDEV,
+ OWNER_NONE, OBJECT_NVMF_FC_IO, 0, 1, "");
+ spdk_trace_register_description("FC_REQ_WRITE_RSP",
+ TRACE_FC_REQ_WRITE_RSP,
+ OWNER_NONE, OBJECT_NVMF_FC_IO, 0, 1, "");
+ spdk_trace_register_description("FC_REQ_NONE_SUBMIT_TO_BDEV",
+ TRACE_FC_REQ_NONE_BDEV,
+ OWNER_NONE, OBJECT_NVMF_FC_IO, 0, 1, "");
+ spdk_trace_register_description("FC_REQ_NONE_RSP",
+ TRACE_FC_REQ_NONE_RSP,
+ OWNER_NONE, OBJECT_NVMF_FC_IO, 0, 1, "");
+ spdk_trace_register_description("FC_REQ_SUCCESS",
+ TRACE_FC_REQ_SUCCESS,
+ OWNER_NONE, OBJECT_NONE, 0, 0, "");
+ spdk_trace_register_description("FC_REQ_FAILED",
+ TRACE_FC_REQ_FAILED,
+ OWNER_NONE, OBJECT_NONE, 0, 0, "");
+ spdk_trace_register_description("FC_REQ_ABORTED",
+ TRACE_FC_REQ_ABORTED,
+ OWNER_NONE, OBJECT_NONE, 0, 1, "");
+ spdk_trace_register_description("FC_REQ_ABORTED_SUBMIT_TO_BDEV",
+ TRACE_FC_REQ_BDEV_ABORTED,
+ OWNER_NONE, OBJECT_NONE, 0, 1, "");
+ spdk_trace_register_description("FC_REQ_PENDING",
+ TRACE_FC_REQ_PENDING,
+ OWNER_NONE, OBJECT_NONE, 0, 1, "");
+}
+
+/**
+ * The structure used by all fc adm functions
+ */
+struct spdk_nvmf_fc_adm_api_data {
+ void *api_args;
+ spdk_nvmf_fc_callback cb_func;
+};
+
+/**
+ * The callback structure for nport-delete
+ */
+struct spdk_nvmf_fc_adm_nport_del_cb_data {
+ struct spdk_nvmf_fc_nport *nport;
+ uint8_t port_handle;
+ spdk_nvmf_fc_callback fc_cb_func;
+ void *fc_cb_ctx;
+};
+
+/**
+ * The callback structure for it-delete
+ */
+struct spdk_nvmf_fc_adm_i_t_del_cb_data {
+ struct spdk_nvmf_fc_nport *nport;
+ struct spdk_nvmf_fc_remote_port_info *rport;
+ uint8_t port_handle;
+ spdk_nvmf_fc_callback fc_cb_func;
+ void *fc_cb_ctx;
+};
+
+
+typedef void (*spdk_nvmf_fc_adm_i_t_delete_assoc_cb_fn)(void *arg, uint32_t err);
+
+/**
+ * The callback structure for the it-delete-assoc callback
+ */
+struct spdk_nvmf_fc_adm_i_t_del_assoc_cb_data {
+ struct spdk_nvmf_fc_nport *nport;
+ struct spdk_nvmf_fc_remote_port_info *rport;
+ uint8_t port_handle;
+ spdk_nvmf_fc_adm_i_t_delete_assoc_cb_fn cb_func;
+ void *cb_ctx;
+};
+
+/*
+ * Call back function pointer for HW port quiesce.
+ */
+typedef void (*spdk_nvmf_fc_adm_hw_port_quiesce_cb_fn)(void *ctx, int err);
+
+/**
+ * Context structure for quiescing a hardware port
+ */
+struct spdk_nvmf_fc_adm_hw_port_quiesce_ctx {
+ int quiesce_count;
+ void *ctx;
+ spdk_nvmf_fc_adm_hw_port_quiesce_cb_fn cb_func;
+};
+
+/**
+ * Context structure used to reset a hardware port
+ */
+struct spdk_nvmf_fc_adm_hw_port_reset_ctx {
+ void *reset_args;
+ spdk_nvmf_fc_callback reset_cb_func;
+};
+
+/**
+ * The callback structure for HW port link break event
+ */
+struct spdk_nvmf_fc_adm_port_link_break_cb_data {
+ struct spdk_nvmf_hw_port_link_break_args *args;
+ struct spdk_nvmf_fc_nport_delete_args nport_del_args;
+ spdk_nvmf_fc_callback cb_func;
+};
+
+struct spdk_nvmf_fc_transport {
+ struct spdk_nvmf_transport transport;
+ pthread_mutex_t lock;
+};
+
+static struct spdk_nvmf_fc_transport *g_nvmf_ftransport;
+
+static TAILQ_HEAD(, spdk_nvmf_fc_port) g_spdk_nvmf_fc_port_list =
+ TAILQ_HEAD_INITIALIZER(g_spdk_nvmf_fc_port_list);
+
+static struct spdk_thread *g_nvmf_fc_master_thread = NULL;
+
+static uint32_t g_nvmf_fgroup_count = 0;
+static TAILQ_HEAD(, spdk_nvmf_fc_poll_group) g_nvmf_fgroups =
+ TAILQ_HEAD_INITIALIZER(g_nvmf_fgroups);
+
+struct spdk_thread *
+nvmf_fc_get_master_thread(void)
+{
+ return g_nvmf_fc_master_thread;
+}
+
+static inline void
+nvmf_fc_record_req_trace_point(struct spdk_nvmf_fc_request *fc_req,
+ enum spdk_nvmf_fc_request_state state)
+{
+ uint16_t tpoint_id = SPDK_TRACE_MAX_TPOINT_ID;
+
+ switch (state) {
+ case SPDK_NVMF_FC_REQ_INIT:
+ /* Start IO tracing */
+ tpoint_id = TRACE_FC_REQ_INIT;
+ break;
+ case SPDK_NVMF_FC_REQ_READ_BDEV:
+ tpoint_id = TRACE_FC_REQ_READ_BDEV;
+ break;
+ case SPDK_NVMF_FC_REQ_READ_XFER:
+ tpoint_id = TRACE_FC_REQ_READ_XFER;
+ break;
+ case SPDK_NVMF_FC_REQ_READ_RSP:
+ tpoint_id = TRACE_FC_REQ_READ_RSP;
+ break;
+ case SPDK_NVMF_FC_REQ_WRITE_BUFFS:
+ tpoint_id = TRACE_FC_REQ_WRITE_BUFFS;
+ break;
+ case SPDK_NVMF_FC_REQ_WRITE_XFER:
+ tpoint_id = TRACE_FC_REQ_WRITE_XFER;
+ break;
+ case SPDK_NVMF_FC_REQ_WRITE_BDEV:
+ tpoint_id = TRACE_FC_REQ_WRITE_BDEV;
+ break;
+ case SPDK_NVMF_FC_REQ_WRITE_RSP:
+ tpoint_id = TRACE_FC_REQ_WRITE_RSP;
+ break;
+ case SPDK_NVMF_FC_REQ_NONE_BDEV:
+ tpoint_id = TRACE_FC_REQ_NONE_BDEV;
+ break;
+ case SPDK_NVMF_FC_REQ_NONE_RSP:
+ tpoint_id = TRACE_FC_REQ_NONE_RSP;
+ break;
+ case SPDK_NVMF_FC_REQ_SUCCESS:
+ tpoint_id = TRACE_FC_REQ_SUCCESS;
+ break;
+ case SPDK_NVMF_FC_REQ_FAILED:
+ tpoint_id = TRACE_FC_REQ_FAILED;
+ break;
+ case SPDK_NVMF_FC_REQ_ABORTED:
+ tpoint_id = TRACE_FC_REQ_ABORTED;
+ break;
+ case SPDK_NVMF_FC_REQ_BDEV_ABORTED:
+ tpoint_id = TRACE_FC_REQ_ABORTED;
+ break;
+ case SPDK_NVMF_FC_REQ_PENDING:
+ tpoint_id = TRACE_FC_REQ_PENDING;
+ break;
+ default:
+ assert(0);
+ break;
+ }
+ if (tpoint_id != SPDK_TRACE_MAX_TPOINT_ID) {
+ spdk_trace_record(tpoint_id, fc_req->poller_lcore, 0,
+ (uint64_t)(&fc_req->req), 0);
+ }
+}
+
+static void
+nvmf_fc_handle_connection_failure(void *arg)
+{
+ struct spdk_nvmf_fc_conn *fc_conn = arg;
+ struct spdk_nvmf_fc_ls_add_conn_api_data *api_data = NULL;
+
+ if (!fc_conn->create_opd) {
+ return;
+ }
+ api_data = &fc_conn->create_opd->u.add_conn;
+
+ nvmf_fc_ls_add_conn_failure(api_data->assoc, api_data->ls_rqst,
+ api_data->args.fc_conn, api_data->aq_conn);
+}
+
+static void
+nvmf_fc_handle_assoc_deletion(void *arg)
+{
+ struct spdk_nvmf_fc_conn *fc_conn = arg;
+
+ nvmf_fc_delete_association(fc_conn->fc_assoc->tgtport,
+ fc_conn->fc_assoc->assoc_id, false, true, NULL, NULL);
+}
+
+static int
+nvmf_fc_create_req_mempool(struct spdk_nvmf_fc_hwqp *hwqp)
+{
+ uint32_t i;
+ struct spdk_nvmf_fc_request *fc_req;
+
+ TAILQ_INIT(&hwqp->free_reqs);
+ TAILQ_INIT(&hwqp->in_use_reqs);
+
+ hwqp->fc_reqs_buf = calloc(hwqp->rq_size, sizeof(struct spdk_nvmf_fc_request));
+ if (hwqp->fc_reqs_buf == NULL) {
+ SPDK_ERRLOG("create fc request pool failed\n");
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < hwqp->rq_size; i++) {
+ fc_req = hwqp->fc_reqs_buf + i;
+
+ nvmf_fc_request_set_state(fc_req, SPDK_NVMF_FC_REQ_INIT);
+ TAILQ_INSERT_TAIL(&hwqp->free_reqs, fc_req, link);
+ }
+
+ return 0;
+}
+
+static inline struct spdk_nvmf_fc_request *
+nvmf_fc_hwqp_alloc_fc_request(struct spdk_nvmf_fc_hwqp *hwqp)
+{
+ struct spdk_nvmf_fc_request *fc_req;
+
+ if (TAILQ_EMPTY(&hwqp->free_reqs)) {
+ SPDK_ERRLOG("Alloc request buffer failed\n");
+ return NULL;
+ }
+
+ fc_req = TAILQ_FIRST(&hwqp->free_reqs);
+ TAILQ_REMOVE(&hwqp->free_reqs, fc_req, link);
+
+ memset(fc_req, 0, sizeof(struct spdk_nvmf_fc_request));
+ TAILQ_INSERT_TAIL(&hwqp->in_use_reqs, fc_req, link);
+ TAILQ_INIT(&fc_req->abort_cbs);
+ return fc_req;
+}
+
+static inline void
+nvmf_fc_hwqp_free_fc_request(struct spdk_nvmf_fc_hwqp *hwqp, struct spdk_nvmf_fc_request *fc_req)
+{
+ if (fc_req->state != SPDK_NVMF_FC_REQ_SUCCESS) {
+ /* Log an error for debug purpose. */
+ nvmf_fc_request_set_state(fc_req, SPDK_NVMF_FC_REQ_FAILED);
+ }
+
+ /* set the magic to mark req as no longer valid. */
+ fc_req->magic = 0xDEADBEEF;
+
+ TAILQ_REMOVE(&hwqp->in_use_reqs, fc_req, link);
+ TAILQ_INSERT_HEAD(&hwqp->free_reqs, fc_req, link);
+}
+
+static inline bool
+nvmf_fc_req_in_get_buff(struct spdk_nvmf_fc_request *fc_req)
+{
+ switch (fc_req->state) {
+ case SPDK_NVMF_FC_REQ_WRITE_BUFFS:
+ return true;
+ default:
+ return false;
+ }
+}
+
+void
+nvmf_fc_init_poller_queues(struct spdk_nvmf_fc_hwqp *hwqp)
+{
+ nvmf_fc_init_rqpair_buffers(hwqp);
+}
+
+struct spdk_nvmf_fc_conn *
+nvmf_fc_hwqp_find_fc_conn(struct spdk_nvmf_fc_hwqp *hwqp, uint64_t conn_id)
+{
+ struct spdk_nvmf_fc_conn *fc_conn;
+
+ TAILQ_FOREACH(fc_conn, &hwqp->connection_list, link) {
+ if (fc_conn->conn_id == conn_id) {
+ return fc_conn;
+ }
+ }
+
+ return NULL;
+}
+
+void
+nvmf_fc_hwqp_reinit_poller_queues(struct spdk_nvmf_fc_hwqp *hwqp, void *queues_curr)
+{
+ struct spdk_nvmf_fc_abts_ctx *ctx;
+ struct spdk_nvmf_fc_poller_api_queue_sync_args *args = NULL, *tmp = NULL;
+
+ /* Clean up any pending sync callbacks */
+ TAILQ_FOREACH_SAFE(args, &hwqp->sync_cbs, link, tmp) {
+ TAILQ_REMOVE(&hwqp->sync_cbs, args, link);
+ ctx = args->cb_info.cb_data;
+ if (ctx) {
+ if (++ctx->hwqps_responded == ctx->num_hwqps) {
+ free(ctx->sync_poller_args);
+ free(ctx->abts_poller_args);
+ free(ctx);
+ }
+ }
+ }
+
+ nvmf_fc_reinit_q(hwqp->queues, queues_curr);
+}
+
+void
+nvmf_fc_init_hwqp(struct spdk_nvmf_fc_port *fc_port, struct spdk_nvmf_fc_hwqp *hwqp)
+{
+ hwqp->fc_port = fc_port;
+
+ /* clear counters */
+ memset(&hwqp->counters, 0, sizeof(struct spdk_nvmf_fc_errors));
+
+ nvmf_fc_init_poller_queues(hwqp);
+ if (&fc_port->ls_queue != hwqp) {
+ nvmf_fc_create_req_mempool(hwqp);
+ }
+
+ nvmf_fc_init_q(hwqp);
+ TAILQ_INIT(&hwqp->connection_list);
+ TAILQ_INIT(&hwqp->sync_cbs);
+ TAILQ_INIT(&hwqp->ls_pending_queue);
+}
+
+static struct spdk_nvmf_fc_poll_group *
+nvmf_fc_get_idlest_poll_group(void)
+{
+ uint32_t max_count = UINT32_MAX;
+ struct spdk_nvmf_fc_poll_group *fgroup;
+ struct spdk_nvmf_fc_poll_group *ret_fgroup = NULL;
+
+ /* find poll group with least number of hwqp's assigned to it */
+ TAILQ_FOREACH(fgroup, &g_nvmf_fgroups, link) {
+ if (fgroup->hwqp_count < max_count) {
+ ret_fgroup = fgroup;
+ max_count = fgroup->hwqp_count;
+ }
+ }
+
+ return ret_fgroup;
+}
+
+void
+nvmf_fc_poll_group_add_hwqp(struct spdk_nvmf_fc_hwqp *hwqp)
+{
+ struct spdk_nvmf_fc_poll_group *fgroup = NULL;
+
+ assert(hwqp);
+ if (hwqp == NULL) {
+ SPDK_ERRLOG("Error: hwqp is NULL\n");
+ return;
+ }
+
+ assert(g_nvmf_fgroup_count);
+
+ fgroup = nvmf_fc_get_idlest_poll_group();
+ if (!fgroup) {
+ SPDK_ERRLOG("Could not assign poll group for hwqp (%d)\n", hwqp->hwqp_id);
+ return;
+ }
+
+ hwqp->thread = fgroup->group.group->thread;
+ hwqp->fgroup = fgroup;
+ fgroup->hwqp_count++;
+ nvmf_fc_poller_api_func(hwqp, SPDK_NVMF_FC_POLLER_API_ADD_HWQP, NULL);
+}
+
+void
+nvmf_fc_poll_group_remove_hwqp(struct spdk_nvmf_fc_hwqp *hwqp)
+{
+ assert(hwqp);
+
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC,
+ "Remove hwqp from poller: for port: %d, hwqp: %d\n",
+ hwqp->fc_port->port_hdl, hwqp->hwqp_id);
+
+ if (!hwqp->fgroup) {
+ SPDK_ERRLOG("HWQP (%d) not assigned to poll group\n", hwqp->hwqp_id);
+ } else {
+ hwqp->fgroup->hwqp_count--;
+ nvmf_fc_poller_api_func(hwqp, SPDK_NVMF_FC_POLLER_API_REMOVE_HWQP, NULL);
+ }
+}
+
+/*
+ * Note: This needs to be used only on master poller.
+ */
+static uint64_t
+nvmf_fc_get_abts_unique_id(void)
+{
+ static uint32_t u_id = 0;
+
+ return (uint64_t)(++u_id);
+}
+
+static void
+nvmf_fc_queue_synced_cb(void *cb_data, enum spdk_nvmf_fc_poller_api_ret ret)
+{
+ struct spdk_nvmf_fc_abts_ctx *ctx = cb_data;
+ struct spdk_nvmf_fc_poller_api_abts_recvd_args *args, *poller_arg;
+
+ ctx->hwqps_responded++;
+
+ if (ctx->hwqps_responded < ctx->num_hwqps) {
+ /* Wait for all pollers to complete. */
+ return;
+ }
+
+ /* Free the queue sync poller args. */
+ free(ctx->sync_poller_args);
+
+ /* Mark as queue synced */
+ ctx->queue_synced = true;
+
+ /* Reset the ctx values */
+ ctx->hwqps_responded = 0;
+ ctx->handled = false;
+
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC,
+ "QueueSync(0x%lx) completed for nport: %d, rpi: 0x%x, oxid: 0x%x, rxid: 0x%x\n",
+ ctx->u_id, ctx->nport->nport_hdl, ctx->rpi, ctx->oxid, ctx->rxid);
+
+ /* Resend ABTS to pollers */
+ args = ctx->abts_poller_args;
+ for (int i = 0; i < ctx->num_hwqps; i++) {
+ poller_arg = args + i;
+ nvmf_fc_poller_api_func(poller_arg->hwqp,
+ SPDK_NVMF_FC_POLLER_API_ABTS_RECEIVED,
+ poller_arg);
+ }
+}
+
+static int
+nvmf_fc_handle_abts_notfound(struct spdk_nvmf_fc_abts_ctx *ctx)
+{
+ struct spdk_nvmf_fc_poller_api_queue_sync_args *args, *poller_arg;
+ struct spdk_nvmf_fc_poller_api_abts_recvd_args *abts_args, *abts_poller_arg;
+
+ /* check if FC driver supports queue sync */
+ if (!nvmf_fc_q_sync_available()) {
+ return -EPERM;
+ }
+
+ assert(ctx);
+ if (!ctx) {
+ SPDK_ERRLOG("NULL ctx pointer");
+ return -EINVAL;
+ }
+
+ /* Reset the ctx values */
+ ctx->hwqps_responded = 0;
+
+ args = calloc(ctx->num_hwqps,
+ sizeof(struct spdk_nvmf_fc_poller_api_queue_sync_args));
+ if (!args) {
+ SPDK_ERRLOG("QueueSync(0x%lx) failed for nport: %d, rpi: 0x%x, oxid: 0x%x, rxid: 0x%x\n",
+ ctx->u_id, ctx->nport->nport_hdl, ctx->rpi, ctx->oxid, ctx->rxid);
+ return -ENOMEM;
+ }
+ ctx->sync_poller_args = args;
+
+ abts_args = ctx->abts_poller_args;
+ for (int i = 0; i < ctx->num_hwqps; i++) {
+ abts_poller_arg = abts_args + i;
+ poller_arg = args + i;
+ poller_arg->u_id = ctx->u_id;
+ poller_arg->hwqp = abts_poller_arg->hwqp;
+ poller_arg->cb_info.cb_func = nvmf_fc_queue_synced_cb;
+ poller_arg->cb_info.cb_data = ctx;
+ poller_arg->cb_info.cb_thread = spdk_get_thread();
+
+ /* Send a Queue sync message to interested pollers */
+ nvmf_fc_poller_api_func(poller_arg->hwqp,
+ SPDK_NVMF_FC_POLLER_API_QUEUE_SYNC,
+ poller_arg);
+ }
+
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC,
+ "QueueSync(0x%lx) Sent for nport: %d, rpi: 0x%x, oxid: 0x%x, rxid: 0x%x\n",
+ ctx->u_id, ctx->nport->nport_hdl, ctx->rpi, ctx->oxid, ctx->rxid);
+
+ /* Post Marker to queue to track aborted request */
+ nvmf_fc_issue_q_sync(ctx->ls_hwqp, ctx->u_id, ctx->fcp_rq_id);
+
+ return 0;
+}
+
+static void
+nvmf_fc_abts_handled_cb(void *cb_data, enum spdk_nvmf_fc_poller_api_ret ret)
+{
+ struct spdk_nvmf_fc_abts_ctx *ctx = cb_data;
+ struct spdk_nvmf_fc_nport *nport = NULL;
+
+ if (ret != SPDK_NVMF_FC_POLLER_API_OXID_NOT_FOUND) {
+ ctx->handled = true;
+ }
+
+ ctx->hwqps_responded++;
+
+ if (ctx->hwqps_responded < ctx->num_hwqps) {
+ /* Wait for all pollers to complete. */
+ return;
+ }
+
+ nport = nvmf_fc_nport_find(ctx->port_hdl, ctx->nport_hdl);
+
+ if (ctx->nport != nport) {
+ /* Nport can be deleted while this abort is being
+ * processed by the pollers.
+ */
+ SPDK_NOTICELOG("nport_%d deleted while processing ABTS frame, rpi: 0x%x, oxid: 0x%x, rxid: 0x%x\n",
+ ctx->nport_hdl, ctx->rpi, ctx->oxid, ctx->rxid);
+ } else {
+ if (!ctx->handled) {
+ /* Try syncing the queues and try one more time */
+ if (!ctx->queue_synced && (nvmf_fc_handle_abts_notfound(ctx) == 0)) {
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC,
+ "QueueSync(0x%lx) for nport: %d, rpi: 0x%x, oxid: 0x%x, rxid: 0x%x\n",
+ ctx->u_id, ctx->nport->nport_hdl, ctx->rpi, ctx->oxid, ctx->rxid);
+ return;
+ } else {
+ /* Send Reject */
+ nvmf_fc_xmt_bls_rsp(&ctx->nport->fc_port->ls_queue,
+ ctx->oxid, ctx->rxid, ctx->rpi, true,
+ FCNVME_BLS_REJECT_EXP_INVALID_OXID, NULL, NULL);
+ }
+ } else {
+ /* Send Accept */
+ nvmf_fc_xmt_bls_rsp(&ctx->nport->fc_port->ls_queue,
+ ctx->oxid, ctx->rxid, ctx->rpi, false,
+ 0, NULL, NULL);
+ }
+ }
+ SPDK_NOTICELOG("BLS_%s sent for ABTS frame nport: %d, rpi: 0x%x, oxid: 0x%x, rxid: 0x%x\n",
+ (ctx->handled) ? "ACC" : "REJ", ctx->nport->nport_hdl, ctx->rpi, ctx->oxid, ctx->rxid);
+
+ free(ctx->abts_poller_args);
+ free(ctx);
+}
+
+void
+nvmf_fc_handle_abts_frame(struct spdk_nvmf_fc_nport *nport, uint16_t rpi,
+ uint16_t oxid, uint16_t rxid)
+{
+ struct spdk_nvmf_fc_abts_ctx *ctx = NULL;
+ struct spdk_nvmf_fc_poller_api_abts_recvd_args *args = NULL, *poller_arg;
+ struct spdk_nvmf_fc_association *assoc = NULL;
+ struct spdk_nvmf_fc_conn *conn = NULL;
+ uint32_t hwqp_cnt = 0;
+ bool skip_hwqp_cnt;
+ struct spdk_nvmf_fc_hwqp **hwqps = NULL;
+ uint32_t i;
+
+ SPDK_NOTICELOG("Handle ABTS frame for nport: %d, rpi: 0x%x, oxid: 0x%x, rxid: 0x%x\n",
+ nport->nport_hdl, rpi, oxid, rxid);
+
+ /* Allocate memory to track hwqp's with at least 1 active connection. */
+ hwqps = calloc(nport->fc_port->num_io_queues, sizeof(struct spdk_nvmf_fc_hwqp *));
+ if (hwqps == NULL) {
+ SPDK_ERRLOG("Unable to allocate temp. hwqp array for abts processing!\n");
+ goto bls_rej;
+ }
+
+ TAILQ_FOREACH(assoc, &nport->fc_associations, link) {
+ TAILQ_FOREACH(conn, &assoc->fc_conns, assoc_link) {
+ if (conn->rpi != rpi) {
+ continue;
+ }
+
+ skip_hwqp_cnt = false;
+ for (i = 0; i < hwqp_cnt; i++) {
+ if (hwqps[i] == conn->hwqp) {
+ /* Skip. This is already present */
+ skip_hwqp_cnt = true;
+ break;
+ }
+ }
+ if (!skip_hwqp_cnt) {
+ assert(hwqp_cnt < nport->fc_port->num_io_queues);
+ hwqps[hwqp_cnt] = conn->hwqp;
+ hwqp_cnt++;
+ }
+ }
+ }
+
+ if (!hwqp_cnt) {
+ goto bls_rej;
+ }
+
+ args = calloc(hwqp_cnt,
+ sizeof(struct spdk_nvmf_fc_poller_api_abts_recvd_args));
+ if (!args) {
+ goto bls_rej;
+ }
+
+ ctx = calloc(1, sizeof(struct spdk_nvmf_fc_abts_ctx));
+ if (!ctx) {
+ goto bls_rej;
+ }
+ ctx->rpi = rpi;
+ ctx->oxid = oxid;
+ ctx->rxid = rxid;
+ ctx->nport = nport;
+ ctx->nport_hdl = nport->nport_hdl;
+ ctx->port_hdl = nport->fc_port->port_hdl;
+ ctx->num_hwqps = hwqp_cnt;
+ ctx->ls_hwqp = &nport->fc_port->ls_queue;
+ ctx->fcp_rq_id = nport->fc_port->fcp_rq_id;
+ ctx->abts_poller_args = args;
+
+ /* Get a unique context for this ABTS */
+ ctx->u_id = nvmf_fc_get_abts_unique_id();
+
+ for (i = 0; i < hwqp_cnt; i++) {
+ poller_arg = args + i;
+ poller_arg->hwqp = hwqps[i];
+ poller_arg->cb_info.cb_func = nvmf_fc_abts_handled_cb;
+ poller_arg->cb_info.cb_data = ctx;
+ poller_arg->cb_info.cb_thread = spdk_get_thread();
+ poller_arg->ctx = ctx;
+
+ nvmf_fc_poller_api_func(poller_arg->hwqp,
+ SPDK_NVMF_FC_POLLER_API_ABTS_RECEIVED,
+ poller_arg);
+ }
+
+ free(hwqps);
+
+ return;
+bls_rej:
+ free(args);
+ free(hwqps);
+
+ /* Send Reject */
+ nvmf_fc_xmt_bls_rsp(&nport->fc_port->ls_queue, oxid, rxid, rpi,
+ true, FCNVME_BLS_REJECT_EXP_NOINFO, NULL, NULL);
+ SPDK_NOTICELOG("BLS_RJT for ABTS frame for nport: %d, rpi: 0x%x, oxid: 0x%x, rxid: 0x%x\n",
+ nport->nport_hdl, rpi, oxid, rxid);
+ return;
+}
+
+/*** Accessor functions for the FC structures - BEGIN */
+/*
+ * Returns true if the port is in offline state.
+ */
+bool
+nvmf_fc_port_is_offline(struct spdk_nvmf_fc_port *fc_port)
+{
+ if (fc_port && (fc_port->hw_port_status == SPDK_FC_PORT_OFFLINE)) {
+ return true;
+ }
+
+ return false;
+}
+
+/*
+ * Returns true if the port is in online state.
+ */
+bool
+nvmf_fc_port_is_online(struct spdk_nvmf_fc_port *fc_port)
+{
+ if (fc_port && (fc_port->hw_port_status == SPDK_FC_PORT_ONLINE)) {
+ return true;
+ }
+
+ return false;
+}
+
+int
+nvmf_fc_port_set_online(struct spdk_nvmf_fc_port *fc_port)
+{
+ if (fc_port && (fc_port->hw_port_status != SPDK_FC_PORT_ONLINE)) {
+ fc_port->hw_port_status = SPDK_FC_PORT_ONLINE;
+ return 0;
+ }
+
+ return -EPERM;
+}
+
+int
+nvmf_fc_port_set_offline(struct spdk_nvmf_fc_port *fc_port)
+{
+ if (fc_port && (fc_port->hw_port_status != SPDK_FC_PORT_OFFLINE)) {
+ fc_port->hw_port_status = SPDK_FC_PORT_OFFLINE;
+ return 0;
+ }
+
+ return -EPERM;
+}
+
+int
+nvmf_fc_hwqp_set_online(struct spdk_nvmf_fc_hwqp *hwqp)
+{
+ if (hwqp && (hwqp->state != SPDK_FC_HWQP_ONLINE)) {
+ hwqp->state = SPDK_FC_HWQP_ONLINE;
+ /* reset some queue counters */
+ hwqp->num_conns = 0;
+ return nvmf_fc_set_q_online_state(hwqp, true);
+ }
+
+ return -EPERM;
+}
+
+int
+nvmf_fc_hwqp_set_offline(struct spdk_nvmf_fc_hwqp *hwqp)
+{
+ if (hwqp && (hwqp->state != SPDK_FC_HWQP_OFFLINE)) {
+ hwqp->state = SPDK_FC_HWQP_OFFLINE;
+ return nvmf_fc_set_q_online_state(hwqp, false);
+ }
+
+ return -EPERM;
+}
+
+void
+nvmf_fc_port_add(struct spdk_nvmf_fc_port *fc_port)
+{
+ TAILQ_INSERT_TAIL(&g_spdk_nvmf_fc_port_list, fc_port, link);
+}
+
+struct spdk_nvmf_fc_port *
+nvmf_fc_port_lookup(uint8_t port_hdl)
+{
+ struct spdk_nvmf_fc_port *fc_port = NULL;
+
+ TAILQ_FOREACH(fc_port, &g_spdk_nvmf_fc_port_list, link) {
+ if (fc_port->port_hdl == port_hdl) {
+ return fc_port;
+ }
+ }
+ return NULL;
+}
+
+static void
+nvmf_fc_port_cleanup(void)
+{
+ struct spdk_nvmf_fc_port *fc_port, *tmp;
+ struct spdk_nvmf_fc_hwqp *hwqp;
+ uint32_t i;
+
+ TAILQ_FOREACH_SAFE(fc_port, &g_spdk_nvmf_fc_port_list, link, tmp) {
+ TAILQ_REMOVE(&g_spdk_nvmf_fc_port_list, fc_port, link);
+ for (i = 0; i < fc_port->num_io_queues; i++) {
+ hwqp = &fc_port->io_queues[i];
+ if (hwqp->fc_reqs_buf) {
+ free(hwqp->fc_reqs_buf);
+ }
+ }
+ free(fc_port);
+ }
+}
+
+uint32_t
+nvmf_fc_get_prli_service_params(void)
+{
+ return (SPDK_NVMF_FC_DISCOVERY_SERVICE | SPDK_NVMF_FC_TARGET_FUNCTION);
+}
+
+int
+nvmf_fc_port_add_nport(struct spdk_nvmf_fc_port *fc_port,
+ struct spdk_nvmf_fc_nport *nport)
+{
+ if (fc_port) {
+ TAILQ_INSERT_TAIL(&fc_port->nport_list, nport, link);
+ fc_port->num_nports++;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+int
+nvmf_fc_port_remove_nport(struct spdk_nvmf_fc_port *fc_port,
+ struct spdk_nvmf_fc_nport *nport)
+{
+ if (fc_port && nport) {
+ TAILQ_REMOVE(&fc_port->nport_list, nport, link);
+ fc_port->num_nports--;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static struct spdk_nvmf_fc_nport *
+nvmf_fc_nport_hdl_lookup(struct spdk_nvmf_fc_port *fc_port, uint16_t nport_hdl)
+{
+ struct spdk_nvmf_fc_nport *fc_nport = NULL;
+
+ TAILQ_FOREACH(fc_nport, &fc_port->nport_list, link) {
+ if (fc_nport->nport_hdl == nport_hdl) {
+ return fc_nport;
+ }
+ }
+
+ return NULL;
+}
+
+struct spdk_nvmf_fc_nport *
+nvmf_fc_nport_find(uint8_t port_hdl, uint16_t nport_hdl)
+{
+ struct spdk_nvmf_fc_port *fc_port = NULL;
+
+ fc_port = nvmf_fc_port_lookup(port_hdl);
+ if (fc_port) {
+ return nvmf_fc_nport_hdl_lookup(fc_port, nport_hdl);
+ }
+
+ return NULL;
+}
+
+static inline int
+nvmf_fc_hwqp_find_nport_and_rport(struct spdk_nvmf_fc_hwqp *hwqp,
+ uint32_t d_id, struct spdk_nvmf_fc_nport **nport,
+ uint32_t s_id, struct spdk_nvmf_fc_remote_port_info **rport)
+{
+ struct spdk_nvmf_fc_nport *n_port;
+ struct spdk_nvmf_fc_remote_port_info *r_port;
+
+ assert(hwqp);
+ if (hwqp == NULL) {
+ SPDK_ERRLOG("Error: hwqp is NULL\n");
+ return -EINVAL;
+ }
+ assert(nport);
+ if (nport == NULL) {
+ SPDK_ERRLOG("Error: nport is NULL\n");
+ return -EINVAL;
+ }
+ assert(rport);
+ if (rport == NULL) {
+ SPDK_ERRLOG("Error: rport is NULL\n");
+ return -EINVAL;
+ }
+
+ TAILQ_FOREACH(n_port, &hwqp->fc_port->nport_list, link) {
+ if (n_port->d_id == d_id) {
+ TAILQ_FOREACH(r_port, &n_port->rem_port_list, link) {
+ if (r_port->s_id == s_id) {
+ *nport = n_port;
+ *rport = r_port;
+ return 0;
+ }
+ }
+ break;
+ }
+ }
+
+ return -ENOENT;
+}
+
+/* Returns true if the Nport is empty of all rem_ports */
+bool
+nvmf_fc_nport_has_no_rport(struct spdk_nvmf_fc_nport *nport)
+{
+ if (nport && TAILQ_EMPTY(&nport->rem_port_list)) {
+ assert(nport->rport_count == 0);
+ return true;
+ } else {
+ return false;
+ }
+}
+
+int
+nvmf_fc_nport_set_state(struct spdk_nvmf_fc_nport *nport,
+ enum spdk_nvmf_fc_object_state state)
+{
+ if (nport) {
+ nport->nport_state = state;
+ return 0;
+ } else {
+ return -EINVAL;
+ }
+}
+
+bool
+nvmf_fc_nport_add_rem_port(struct spdk_nvmf_fc_nport *nport,
+ struct spdk_nvmf_fc_remote_port_info *rem_port)
+{
+ if (nport && rem_port) {
+ TAILQ_INSERT_TAIL(&nport->rem_port_list, rem_port, link);
+ nport->rport_count++;
+ return 0;
+ } else {
+ return -EINVAL;
+ }
+}
+
+bool
+nvmf_fc_nport_remove_rem_port(struct spdk_nvmf_fc_nport *nport,
+ struct spdk_nvmf_fc_remote_port_info *rem_port)
+{
+ if (nport && rem_port) {
+ TAILQ_REMOVE(&nport->rem_port_list, rem_port, link);
+ nport->rport_count--;
+ return 0;
+ } else {
+ return -EINVAL;
+ }
+}
+
+int
+nvmf_fc_rport_set_state(struct spdk_nvmf_fc_remote_port_info *rport,
+ enum spdk_nvmf_fc_object_state state)
+{
+ if (rport) {
+ rport->rport_state = state;
+ return 0;
+ } else {
+ return -EINVAL;
+ }
+}
+int
+nvmf_fc_assoc_set_state(struct spdk_nvmf_fc_association *assoc,
+ enum spdk_nvmf_fc_object_state state)
+{
+ if (assoc) {
+ assoc->assoc_state = state;
+ return 0;
+ } else {
+ return -EINVAL;
+ }
+}
+
+static struct spdk_nvmf_fc_association *
+nvmf_ctrlr_get_fc_assoc(struct spdk_nvmf_ctrlr *ctrlr)
+{
+ struct spdk_nvmf_qpair *qpair = ctrlr->admin_qpair;
+ struct spdk_nvmf_fc_conn *fc_conn;
+
+ if (!qpair) {
+ SPDK_ERRLOG("Controller %d has no associations\n", ctrlr->cntlid);
+ return NULL;
+ }
+
+ fc_conn = SPDK_CONTAINEROF(qpair, struct spdk_nvmf_fc_conn, qpair);
+
+ return fc_conn->fc_assoc;
+}
+
+bool
+nvmf_ctrlr_is_on_nport(uint8_t port_hdl, uint16_t nport_hdl,
+ struct spdk_nvmf_ctrlr *ctrlr)
+{
+ struct spdk_nvmf_fc_nport *fc_nport = NULL;
+ struct spdk_nvmf_fc_association *assoc = NULL;
+
+ if (!ctrlr) {
+ return false;
+ }
+
+ fc_nport = nvmf_fc_nport_find(port_hdl, nport_hdl);
+ if (!fc_nport) {
+ return false;
+ }
+
+ assoc = nvmf_ctrlr_get_fc_assoc(ctrlr);
+ if (assoc && assoc->tgtport == fc_nport) {
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC,
+ "Controller: %d corresponding to association: %p(%lu:%d) is on port: %d nport: %d\n",
+ ctrlr->cntlid, assoc, assoc->assoc_id, assoc->assoc_state, port_hdl,
+ nport_hdl);
+ return true;
+ }
+ return false;
+}
+
+static inline bool
+nvmf_fc_req_in_bdev(struct spdk_nvmf_fc_request *fc_req)
+{
+ switch (fc_req->state) {
+ case SPDK_NVMF_FC_REQ_READ_BDEV:
+ case SPDK_NVMF_FC_REQ_WRITE_BDEV:
+ case SPDK_NVMF_FC_REQ_NONE_BDEV:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static inline bool
+nvmf_fc_req_in_pending(struct spdk_nvmf_fc_request *fc_req)
+{
+ struct spdk_nvmf_request *tmp = NULL;
+
+ STAILQ_FOREACH(tmp, &fc_req->hwqp->fgroup->group.pending_buf_queue, buf_link) {
+ if (tmp == &fc_req->req) {
+ return true;
+ }
+ }
+ return false;
+}
+
+static void
+nvmf_fc_req_bdev_abort(void *arg1)
+{
+ struct spdk_nvmf_fc_request *fc_req = arg1;
+ struct spdk_nvmf_ctrlr *ctrlr = fc_req->req.qpair->ctrlr;
+ int i;
+
+ /* Initial release - we don't have to abort Admin Queue or
+ * Fabric commands. The AQ commands supported at this time are
+ * Get-Log-Page,
+ * Identify
+ * Set Features
+ * Get Features
+ * AER -> Special case and handled differently.
+ * Every one of the above Admin commands (except AER) run
+ * to completion and so an Abort of such commands doesn't
+ * make sense.
+ */
+ /* The Fabric commands supported are
+ * Property Set
+ * Property Get
+ * Connect -> Special case (async. handling). Not sure how to
+ * handle at this point. Let it run to completion.
+ */
+ for (i = 0; i < NVMF_MAX_ASYNC_EVENTS; i++) {
+ if (ctrlr->aer_req[i] == &fc_req->req) {
+ SPDK_NOTICELOG("Abort AER request\n");
+ nvmf_qpair_free_aer(fc_req->req.qpair);
+ }
+ }
+}
+
+void
+nvmf_fc_request_abort_complete(void *arg1)
+{
+ struct spdk_nvmf_fc_request *fc_req =
+ (struct spdk_nvmf_fc_request *)arg1;
+ struct spdk_nvmf_fc_caller_ctx *ctx = NULL, *tmp = NULL;
+
+ /* Request abort completed. Notify all the callbacks */
+ TAILQ_FOREACH_SAFE(ctx, &fc_req->abort_cbs, link, tmp) {
+ /* Notify */
+ ctx->cb(fc_req->hwqp, 0, ctx->cb_args);
+ /* Remove */
+ TAILQ_REMOVE(&fc_req->abort_cbs, ctx, link);
+ /* free */
+ free(ctx);
+ }
+
+ SPDK_NOTICELOG("FC Request(%p) in state :%s aborted\n", fc_req,
+ fc_req_state_strs[fc_req->state]);
+
+ _nvmf_fc_request_free(fc_req);
+}
+
+void
+nvmf_fc_request_abort(struct spdk_nvmf_fc_request *fc_req, bool send_abts,
+ spdk_nvmf_fc_caller_cb cb, void *cb_args)
+{
+ struct spdk_nvmf_fc_caller_ctx *ctx = NULL;
+ bool kill_req = false;
+
+ /* Add the cb to list */
+ if (cb) {
+ ctx = calloc(1, sizeof(struct spdk_nvmf_fc_caller_ctx));
+ if (!ctx) {
+ SPDK_ERRLOG("ctx alloc failed.\n");
+ return;
+ }
+ ctx->cb = cb;
+ ctx->cb_args = cb_args;
+
+ TAILQ_INSERT_TAIL(&fc_req->abort_cbs, ctx, link);
+ }
+
+ if (!fc_req->is_aborted) {
+ /* Increment aborted command counter */
+ fc_req->hwqp->counters.num_aborted++;
+ }
+
+ /* If port is dead, skip abort wqe */
+ kill_req = nvmf_fc_is_port_dead(fc_req->hwqp);
+ if (kill_req && nvmf_fc_req_in_xfer(fc_req)) {
+ fc_req->is_aborted = true;
+ goto complete;
+ }
+
+ /* Check if the request is already marked for deletion */
+ if (fc_req->is_aborted) {
+ return;
+ }
+
+ /* Mark request as aborted */
+ fc_req->is_aborted = true;
+
+ /* If xchg is allocated, then save if we need to send abts or not. */
+ if (fc_req->xchg) {
+ fc_req->xchg->send_abts = send_abts;
+ fc_req->xchg->aborted = true;
+ }
+
+ if (fc_req->state == SPDK_NVMF_FC_REQ_BDEV_ABORTED) {
+ /* Aborted by backend */
+ goto complete;
+ } else if (nvmf_fc_req_in_bdev(fc_req)) {
+ /* Notify bdev */
+ spdk_thread_send_msg(fc_req->hwqp->thread,
+ nvmf_fc_req_bdev_abort, (void *)fc_req);
+ } else if (nvmf_fc_req_in_xfer(fc_req)) {
+ /* Notify HBA to abort this exchange */
+ nvmf_fc_issue_abort(fc_req->hwqp, fc_req->xchg, NULL, NULL);
+ } else if (nvmf_fc_req_in_get_buff(fc_req)) {
+ /* Will be completed by request_complete callback. */
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC, "Abort req when getting buffers.\n");
+ } else if (nvmf_fc_req_in_pending(fc_req)) {
+ /* Remove from pending */
+ STAILQ_REMOVE(&fc_req->hwqp->fgroup->group.pending_buf_queue, &fc_req->req,
+ spdk_nvmf_request, buf_link);
+ goto complete;
+ } else {
+ /* Should never happen */
+ SPDK_ERRLOG("Request in invalid state\n");
+ goto complete;
+ }
+
+ return;
+complete:
+ nvmf_fc_request_set_state(fc_req, SPDK_NVMF_FC_REQ_ABORTED);
+ nvmf_fc_poller_api_func(fc_req->hwqp, SPDK_NVMF_FC_POLLER_API_REQ_ABORT_COMPLETE,
+ (void *)fc_req);
+}
+
+static int
+nvmf_fc_request_alloc_buffers(struct spdk_nvmf_fc_request *fc_req)
+{
+ uint32_t length = fc_req->req.length;
+ struct spdk_nvmf_fc_poll_group *fgroup = fc_req->hwqp->fgroup;
+ struct spdk_nvmf_transport_poll_group *group = &fgroup->group;
+ struct spdk_nvmf_transport *transport = group->transport;
+
+ if (spdk_nvmf_request_get_buffers(&fc_req->req, group, transport, length)) {
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static int
+nvmf_fc_request_execute(struct spdk_nvmf_fc_request *fc_req)
+{
+ /* Allocate an XCHG if we dont use send frame for this command. */
+ if (!nvmf_fc_use_send_frame(&fc_req->req)) {
+ fc_req->xchg = nvmf_fc_get_xri(fc_req->hwqp);
+ if (!fc_req->xchg) {
+ fc_req->hwqp->counters.no_xchg++;
+ printf("NO XCHGs!\n");
+ goto pending;
+ }
+ }
+
+ if (fc_req->req.length) {
+ if (nvmf_fc_request_alloc_buffers(fc_req) < 0) {
+ fc_req->hwqp->counters.buf_alloc_err++;
+ goto pending;
+ }
+ fc_req->req.data = fc_req->req.iov[0].iov_base;
+ }
+
+ if (fc_req->req.xfer == SPDK_NVME_DATA_HOST_TO_CONTROLLER) {
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC, "WRITE CMD.\n");
+
+ nvmf_fc_request_set_state(fc_req, SPDK_NVMF_FC_REQ_WRITE_XFER);
+
+ if (nvmf_fc_recv_data(fc_req)) {
+ /* Dropped return success to caller */
+ fc_req->hwqp->counters.unexpected_err++;
+ _nvmf_fc_request_free(fc_req);
+ }
+ } else {
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC, "READ/NONE CMD\n");
+
+ if (fc_req->req.xfer == SPDK_NVME_DATA_CONTROLLER_TO_HOST) {
+ nvmf_fc_request_set_state(fc_req, SPDK_NVMF_FC_REQ_READ_BDEV);
+ } else {
+ nvmf_fc_request_set_state(fc_req, SPDK_NVMF_FC_REQ_NONE_BDEV);
+ }
+ spdk_nvmf_request_exec(&fc_req->req);
+ }
+
+ return 0;
+
+pending:
+ if (fc_req->xchg) {
+ nvmf_fc_put_xchg(fc_req->hwqp, fc_req->xchg);
+ fc_req->xchg = NULL;
+ }
+
+ nvmf_fc_request_set_state(fc_req, SPDK_NVMF_FC_REQ_PENDING);
+
+ return -EAGAIN;
+}
+
+static int
+nvmf_fc_hwqp_handle_request(struct spdk_nvmf_fc_hwqp *hwqp, struct spdk_nvmf_fc_frame_hdr *frame,
+ uint32_t buf_idx, struct spdk_nvmf_fc_buffer_desc *buffer, uint32_t plen)
+{
+ uint16_t cmnd_len;
+ uint64_t rqst_conn_id;
+ struct spdk_nvmf_fc_request *fc_req = NULL;
+ struct spdk_nvmf_fc_cmnd_iu *cmd_iu = NULL;
+ struct spdk_nvmf_fc_conn *fc_conn = NULL;
+ enum spdk_nvme_data_transfer xfer;
+
+ cmd_iu = buffer->virt;
+ cmnd_len = cmd_iu->cmnd_iu_len;
+ cmnd_len = from_be16(&cmnd_len);
+
+ /* check for a valid cmnd_iu format */
+ if ((cmd_iu->fc_id != FCNVME_CMND_IU_FC_ID) ||
+ (cmd_iu->scsi_id != FCNVME_CMND_IU_SCSI_ID) ||
+ (cmnd_len != sizeof(struct spdk_nvmf_fc_cmnd_iu) / 4)) {
+ SPDK_ERRLOG("IU CMD error\n");
+ hwqp->counters.nvme_cmd_iu_err++;
+ return -ENXIO;
+ }
+
+ xfer = spdk_nvme_opc_get_data_transfer(cmd_iu->flags);
+ if (xfer == SPDK_NVME_DATA_BIDIRECTIONAL) {
+ SPDK_ERRLOG("IU CMD xfer error\n");
+ hwqp->counters.nvme_cmd_xfer_err++;
+ return -EPERM;
+ }
+
+ rqst_conn_id = from_be64(&cmd_iu->conn_id);
+
+ /* Check if conn id is valid */
+ fc_conn = nvmf_fc_hwqp_find_fc_conn(hwqp, rqst_conn_id);
+ if (!fc_conn) {
+ SPDK_ERRLOG("IU CMD conn(%ld) invalid\n", rqst_conn_id);
+ hwqp->counters.invalid_conn_err++;
+ return -ENODEV;
+ }
+
+ /* If association/connection is being deleted - return */
+ if (fc_conn->fc_assoc->assoc_state != SPDK_NVMF_FC_OBJECT_CREATED) {
+ SPDK_ERRLOG("Association state not valid\n");
+ return -EACCES;
+ }
+
+ if (fc_conn->qpair.state == SPDK_NVMF_QPAIR_ERROR) {
+ return -EACCES;
+ }
+
+ /* Make sure xfer len is according to mdts */
+ if (from_be32(&cmd_iu->data_len) >
+ hwqp->fgroup->group.transport->opts.max_io_size) {
+ SPDK_ERRLOG("IO length requested is greater than MDTS\n");
+ return -EINVAL;
+ }
+
+ /* allocate a request buffer */
+ fc_req = nvmf_fc_hwqp_alloc_fc_request(hwqp);
+ if (fc_req == NULL) {
+ /* Should not happen. Since fc_reqs == RQ buffers */
+ return -ENOMEM;
+ }
+
+ fc_req->req.length = from_be32(&cmd_iu->data_len);
+ fc_req->req.qpair = &fc_conn->qpair;
+ fc_req->req.cmd = (union nvmf_h2c_msg *)&cmd_iu->cmd;
+ fc_req->req.rsp = (union nvmf_c2h_msg *)&fc_req->ersp.rsp;
+ fc_req->oxid = frame->ox_id;
+ fc_req->oxid = from_be16(&fc_req->oxid);
+ fc_req->rpi = fc_conn->rpi;
+ fc_req->buf_index = buf_idx;
+ fc_req->poller_lcore = hwqp->lcore_id;
+ fc_req->poller_thread = hwqp->thread;
+ fc_req->hwqp = hwqp;
+ fc_req->fc_conn = fc_conn;
+ fc_req->req.xfer = xfer;
+ fc_req->s_id = (uint32_t)frame->s_id;
+ fc_req->d_id = (uint32_t)frame->d_id;
+ fc_req->s_id = from_be32(&fc_req->s_id) >> 8;
+ fc_req->d_id = from_be32(&fc_req->d_id) >> 8;
+
+ nvmf_fc_record_req_trace_point(fc_req, SPDK_NVMF_FC_REQ_INIT);
+ if (nvmf_fc_request_execute(fc_req)) {
+ STAILQ_INSERT_TAIL(&hwqp->fgroup->group.pending_buf_queue, &fc_req->req, buf_link);
+ }
+
+ return 0;
+}
+
+/*
+ * These functions are called from the FC LLD
+ */
+
+void
+_nvmf_fc_request_free(struct spdk_nvmf_fc_request *fc_req)
+{
+ struct spdk_nvmf_fc_hwqp *hwqp = fc_req->hwqp;
+ struct spdk_nvmf_fc_poll_group *fgroup = hwqp->fgroup;
+ struct spdk_nvmf_transport_poll_group *group = &fgroup->group;
+ struct spdk_nvmf_transport *transport = group->transport;
+
+ if (!fc_req) {
+ return;
+ }
+
+ if (fc_req->xchg) {
+ nvmf_fc_put_xchg(hwqp, fc_req->xchg);
+ fc_req->xchg = NULL;
+ }
+
+ /* Release IO buffers */
+ if (fc_req->req.data_from_pool) {
+ spdk_nvmf_request_free_buffers(&fc_req->req, group, transport);
+ }
+ fc_req->req.data = NULL;
+ fc_req->req.iovcnt = 0;
+
+ /* Release Q buffer */
+ nvmf_fc_rqpair_buffer_release(hwqp, fc_req->buf_index);
+
+ /* Free Fc request */
+ nvmf_fc_hwqp_free_fc_request(hwqp, fc_req);
+}
+
+void
+nvmf_fc_request_set_state(struct spdk_nvmf_fc_request *fc_req,
+ enum spdk_nvmf_fc_request_state state)
+{
+ assert(fc_req->magic != 0xDEADBEEF);
+
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC,
+ "FC Request(%p):\n\tState Old:%s New:%s\n", fc_req,
+ nvmf_fc_request_get_state_str(fc_req->state),
+ nvmf_fc_request_get_state_str(state));
+ nvmf_fc_record_req_trace_point(fc_req, state);
+ fc_req->state = state;
+}
+
+char *
+nvmf_fc_request_get_state_str(int state)
+{
+ static char *unk_str = "unknown";
+
+ return (state >= 0 && state < (int)(sizeof(fc_req_state_strs) / sizeof(char *)) ?
+ fc_req_state_strs[state] : unk_str);
+}
+
+int
+nvmf_fc_hwqp_process_frame(struct spdk_nvmf_fc_hwqp *hwqp,
+ uint32_t buff_idx,
+ struct spdk_nvmf_fc_frame_hdr *frame,
+ struct spdk_nvmf_fc_buffer_desc *buffer,
+ uint32_t plen)
+{
+ int rc = 0;
+ uint32_t s_id, d_id;
+ struct spdk_nvmf_fc_nport *nport = NULL;
+ struct spdk_nvmf_fc_remote_port_info *rport = NULL;
+
+ s_id = (uint32_t)frame->s_id;
+ d_id = (uint32_t)frame->d_id;
+ s_id = from_be32(&s_id) >> 8;
+ d_id = from_be32(&d_id) >> 8;
+
+ /* Note: In tracelog below, we directly do endian conversion on rx_id and.
+ * ox_id Since these are fields, we can't pass address to from_be16().
+ * Since ox_id and rx_id are only needed for tracelog, assigning to local
+ * vars. and doing conversion is a waste of time in non-debug builds. */
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC,
+ "Process NVME frame s_id:0x%x d_id:0x%x oxid:0x%x rxid:0x%x.\n",
+ s_id, d_id,
+ ((frame->ox_id << 8) & 0xff00) | ((frame->ox_id >> 8) & 0xff),
+ ((frame->rx_id << 8) & 0xff00) | ((frame->rx_id >> 8) & 0xff));
+
+ rc = nvmf_fc_hwqp_find_nport_and_rport(hwqp, d_id, &nport, s_id, &rport);
+ if (rc) {
+ if (nport == NULL) {
+ SPDK_ERRLOG("Nport not found. Dropping\n");
+ /* increment invalid nport counter */
+ hwqp->counters.nport_invalid++;
+ } else if (rport == NULL) {
+ SPDK_ERRLOG("Rport not found. Dropping\n");
+ /* increment invalid rport counter */
+ hwqp->counters.rport_invalid++;
+ }
+ return rc;
+ }
+
+ if (nport->nport_state != SPDK_NVMF_FC_OBJECT_CREATED ||
+ rport->rport_state != SPDK_NVMF_FC_OBJECT_CREATED) {
+ SPDK_ERRLOG("%s state not created. Dropping\n",
+ nport->nport_state != SPDK_NVMF_FC_OBJECT_CREATED ?
+ "Nport" : "Rport");
+ return -EACCES;
+ }
+
+ if ((frame->r_ctl == FCNVME_R_CTL_LS_REQUEST) &&
+ (frame->type == FCNVME_TYPE_NVMF_DATA)) {
+ struct spdk_nvmf_fc_rq_buf_ls_request *req_buf = buffer->virt;
+ struct spdk_nvmf_fc_ls_rqst *ls_rqst;
+
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC, "Process LS NVME frame\n");
+
+ /* Use the RQ buffer for holding LS request. */
+ ls_rqst = (struct spdk_nvmf_fc_ls_rqst *)&req_buf->ls_rqst;
+
+ /* Fill in the LS request structure */
+ ls_rqst->rqstbuf.virt = (void *)&req_buf->rqst;
+ ls_rqst->rqstbuf.phys = buffer->phys +
+ offsetof(struct spdk_nvmf_fc_rq_buf_ls_request, rqst);
+ ls_rqst->rqstbuf.buf_index = buff_idx;
+ ls_rqst->rqst_len = plen;
+
+ ls_rqst->rspbuf.virt = (void *)&req_buf->resp;
+ ls_rqst->rspbuf.phys = buffer->phys +
+ offsetof(struct spdk_nvmf_fc_rq_buf_ls_request, resp);
+ ls_rqst->rsp_len = FCNVME_MAX_LS_RSP_SIZE;
+
+ ls_rqst->private_data = (void *)hwqp;
+ ls_rqst->rpi = rport->rpi;
+ ls_rqst->oxid = (uint16_t)frame->ox_id;
+ ls_rqst->oxid = from_be16(&ls_rqst->oxid);
+ ls_rqst->s_id = s_id;
+ ls_rqst->d_id = d_id;
+ ls_rqst->nport = nport;
+ ls_rqst->rport = rport;
+ ls_rqst->nvmf_tgt = g_nvmf_ftransport->transport.tgt;
+
+ ls_rqst->xchg = nvmf_fc_get_xri(hwqp);
+ if (ls_rqst->xchg) {
+ /* Handover the request to LS module */
+ nvmf_fc_handle_ls_rqst(ls_rqst);
+ } else {
+ /* No XCHG available. Add to pending list. */
+ hwqp->counters.no_xchg++;
+ TAILQ_INSERT_TAIL(&hwqp->ls_pending_queue, ls_rqst, ls_pending_link);
+ }
+ } else if ((frame->r_ctl == FCNVME_R_CTL_CMD_REQ) &&
+ (frame->type == FCNVME_TYPE_FC_EXCHANGE)) {
+
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC, "Process IO NVME frame\n");
+ rc = nvmf_fc_hwqp_handle_request(hwqp, frame, buff_idx, buffer, plen);
+ } else {
+
+ SPDK_ERRLOG("Unknown frame received. Dropping\n");
+ hwqp->counters.unknown_frame++;
+ rc = -EINVAL;
+ }
+
+ return rc;
+}
+
+void
+nvmf_fc_hwqp_process_pending_reqs(struct spdk_nvmf_fc_hwqp *hwqp)
+{
+ struct spdk_nvmf_request *req = NULL, *tmp;
+ struct spdk_nvmf_fc_request *fc_req;
+ int budget = 64;
+
+ if (!hwqp->fgroup) {
+ /* LS queue is tied to acceptor_poll group and LS pending requests
+ * are stagged and processed using hwqp->ls_pending_queue.
+ */
+ return;
+ }
+
+ STAILQ_FOREACH_SAFE(req, &hwqp->fgroup->group.pending_buf_queue, buf_link, tmp) {
+ fc_req = SPDK_CONTAINEROF(req, struct spdk_nvmf_fc_request, req);
+ if (!nvmf_fc_request_execute(fc_req)) {
+ /* Succesfuly posted, Delete from pending. */
+ STAILQ_REMOVE_HEAD(&hwqp->fgroup->group.pending_buf_queue, buf_link);
+ }
+
+ if (budget) {
+ budget--;
+ } else {
+ return;
+ }
+ }
+}
+
+void
+nvmf_fc_hwqp_process_pending_ls_rqsts(struct spdk_nvmf_fc_hwqp *hwqp)
+{
+ struct spdk_nvmf_fc_ls_rqst *ls_rqst = NULL, *tmp;
+ struct spdk_nvmf_fc_nport *nport = NULL;
+ struct spdk_nvmf_fc_remote_port_info *rport = NULL;
+
+ TAILQ_FOREACH_SAFE(ls_rqst, &hwqp->ls_pending_queue, ls_pending_link, tmp) {
+ /* lookup nport and rport again - make sure they are still valid */
+ int rc = nvmf_fc_hwqp_find_nport_and_rport(hwqp, ls_rqst->d_id, &nport, ls_rqst->s_id, &rport);
+ if (rc) {
+ if (nport == NULL) {
+ SPDK_ERRLOG("Nport not found. Dropping\n");
+ /* increment invalid nport counter */
+ hwqp->counters.nport_invalid++;
+ } else if (rport == NULL) {
+ SPDK_ERRLOG("Rport not found. Dropping\n");
+ /* increment invalid rport counter */
+ hwqp->counters.rport_invalid++;
+ }
+ TAILQ_REMOVE(&hwqp->ls_pending_queue, ls_rqst, ls_pending_link);
+ /* Return buffer to chip */
+ nvmf_fc_rqpair_buffer_release(hwqp, ls_rqst->rqstbuf.buf_index);
+ continue;
+ }
+ if (nport->nport_state != SPDK_NVMF_FC_OBJECT_CREATED ||
+ rport->rport_state != SPDK_NVMF_FC_OBJECT_CREATED) {
+ SPDK_ERRLOG("%s state not created. Dropping\n",
+ nport->nport_state != SPDK_NVMF_FC_OBJECT_CREATED ?
+ "Nport" : "Rport");
+ TAILQ_REMOVE(&hwqp->ls_pending_queue, ls_rqst, ls_pending_link);
+ /* Return buffer to chip */
+ nvmf_fc_rqpair_buffer_release(hwqp, ls_rqst->rqstbuf.buf_index);
+ continue;
+ }
+
+ ls_rqst->xchg = nvmf_fc_get_xri(hwqp);
+ if (ls_rqst->xchg) {
+ /* Got an XCHG */
+ TAILQ_REMOVE(&hwqp->ls_pending_queue, ls_rqst, ls_pending_link);
+ /* Handover the request to LS module */
+ nvmf_fc_handle_ls_rqst(ls_rqst);
+ } else {
+ /* No more XCHGs. Stop processing. */
+ hwqp->counters.no_xchg++;
+ return;
+ }
+ }
+}
+
+int
+nvmf_fc_handle_rsp(struct spdk_nvmf_fc_request *fc_req)
+{
+ int rc = 0;
+ struct spdk_nvmf_request *req = &fc_req->req;
+ struct spdk_nvmf_qpair *qpair = req->qpair;
+ struct spdk_nvmf_fc_conn *fc_conn = nvmf_fc_get_conn(qpair);
+ struct spdk_nvme_cpl *rsp = &req->rsp->nvme_cpl;
+ uint16_t ersp_len = 0;
+
+ /* set sq head value in resp */
+ rsp->sqhd = nvmf_fc_advance_conn_sqhead(qpair);
+
+ /* Increment connection responses */
+ fc_conn->rsp_count++;
+
+ if (nvmf_fc_send_ersp_required(fc_req, fc_conn->rsp_count,
+ fc_req->transfered_len)) {
+ /* Fill ERSP Len */
+ to_be16(&ersp_len, (sizeof(struct spdk_nvmf_fc_ersp_iu) /
+ sizeof(uint32_t)));
+ fc_req->ersp.ersp_len = ersp_len;
+
+ /* Fill RSN */
+ to_be32(&fc_req->ersp.response_seq_no, fc_conn->rsn);
+ fc_conn->rsn++;
+
+ /* Fill transfer length */
+ to_be32(&fc_req->ersp.transferred_data_len, fc_req->transfered_len);
+
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC, "Posting ERSP.\n");
+ rc = nvmf_fc_xmt_rsp(fc_req, (uint8_t *)&fc_req->ersp,
+ sizeof(struct spdk_nvmf_fc_ersp_iu));
+ } else {
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC, "Posting RSP.\n");
+ rc = nvmf_fc_xmt_rsp(fc_req, NULL, 0);
+ }
+
+ return rc;
+}
+
+bool
+nvmf_fc_send_ersp_required(struct spdk_nvmf_fc_request *fc_req,
+ uint32_t rsp_cnt, uint32_t xfer_len)
+{
+ struct spdk_nvmf_request *req = &fc_req->req;
+ struct spdk_nvmf_qpair *qpair = req->qpair;
+ struct spdk_nvmf_fc_conn *fc_conn = nvmf_fc_get_conn(qpair);
+ struct spdk_nvme_cmd *cmd = &req->cmd->nvme_cmd;
+ struct spdk_nvme_cpl *rsp = &req->rsp->nvme_cpl;
+ uint16_t status = *((uint16_t *)&rsp->status);
+
+ /*
+ * Check if we need to send ERSP
+ * 1) For every N responses where N == ersp_ratio
+ * 2) Fabric commands.
+ * 3) Completion status failed or Completion dw0 or dw1 valid.
+ * 4) SQ == 90% full.
+ * 5) Transfer length not equal to CMD IU length
+ */
+
+ if (!(rsp_cnt % fc_conn->esrp_ratio) ||
+ (cmd->opc == SPDK_NVME_OPC_FABRIC) ||
+ (status & 0xFFFE) || rsp->cdw0 || rsp->rsvd1 ||
+ (req->length != xfer_len)) {
+ return true;
+ }
+ return false;
+}
+
+static int
+nvmf_fc_request_complete(struct spdk_nvmf_request *req)
+{
+ int rc = 0;
+ struct spdk_nvmf_fc_request *fc_req = nvmf_fc_get_fc_req(req);
+ struct spdk_nvme_cpl *rsp = &req->rsp->nvme_cpl;
+
+ if (fc_req->is_aborted) {
+ /* Defer this to make sure we dont call io cleanup in same context. */
+ nvmf_fc_poller_api_func(fc_req->hwqp, SPDK_NVMF_FC_POLLER_API_REQ_ABORT_COMPLETE,
+ (void *)fc_req);
+ } else if (rsp->status.sc == SPDK_NVME_SC_SUCCESS &&
+ req->xfer == SPDK_NVME_DATA_CONTROLLER_TO_HOST) {
+
+ nvmf_fc_request_set_state(fc_req, SPDK_NVMF_FC_REQ_READ_XFER);
+
+ rc = nvmf_fc_send_data(fc_req);
+ } else {
+ if (req->xfer == SPDK_NVME_DATA_HOST_TO_CONTROLLER) {
+ nvmf_fc_request_set_state(fc_req, SPDK_NVMF_FC_REQ_WRITE_RSP);
+ } else if (req->xfer == SPDK_NVME_DATA_CONTROLLER_TO_HOST) {
+ nvmf_fc_request_set_state(fc_req, SPDK_NVMF_FC_REQ_READ_RSP);
+ } else {
+ nvmf_fc_request_set_state(fc_req, SPDK_NVMF_FC_REQ_NONE_RSP);
+ }
+
+ rc = nvmf_fc_handle_rsp(fc_req);
+ }
+
+ if (rc) {
+ SPDK_ERRLOG("Error in request complete.\n");
+ _nvmf_fc_request_free(fc_req);
+ }
+ return 0;
+}
+
+struct spdk_nvmf_tgt *
+nvmf_fc_get_tgt(void)
+{
+ if (g_nvmf_ftransport) {
+ return g_nvmf_ftransport->transport.tgt;
+ }
+ return NULL;
+}
+
+/*
+ * FC Transport Public API begins here
+ */
+
+#define SPDK_NVMF_FC_DEFAULT_MAX_QUEUE_DEPTH 128
+#define SPDK_NVMF_FC_DEFAULT_AQ_DEPTH 32
+#define SPDK_NVMF_FC_DEFAULT_MAX_QPAIRS_PER_CTRLR 5
+#define SPDK_NVMF_FC_DEFAULT_IN_CAPSULE_DATA_SIZE 0
+#define SPDK_NVMF_FC_DEFAULT_MAX_IO_SIZE 65536
+#define SPDK_NVMF_FC_DEFAULT_IO_UNIT_SIZE 4096
+#define SPDK_NVMF_FC_DEFAULT_NUM_SHARED_BUFFERS 8192
+#define SPDK_NVMF_FC_DEFAULT_MAX_SGE (SPDK_NVMF_FC_DEFAULT_MAX_IO_SIZE / \
+ SPDK_NVMF_FC_DEFAULT_IO_UNIT_SIZE)
+
+static void
+nvmf_fc_opts_init(struct spdk_nvmf_transport_opts *opts)
+{
+ opts->max_queue_depth = SPDK_NVMF_FC_DEFAULT_MAX_QUEUE_DEPTH;
+ opts->max_qpairs_per_ctrlr = SPDK_NVMF_FC_DEFAULT_MAX_QPAIRS_PER_CTRLR;
+ opts->in_capsule_data_size = SPDK_NVMF_FC_DEFAULT_IN_CAPSULE_DATA_SIZE;
+ opts->max_io_size = SPDK_NVMF_FC_DEFAULT_MAX_IO_SIZE;
+ opts->io_unit_size = SPDK_NVMF_FC_DEFAULT_IO_UNIT_SIZE;
+ opts->max_aq_depth = SPDK_NVMF_FC_DEFAULT_AQ_DEPTH;
+ opts->num_shared_buffers = SPDK_NVMF_FC_DEFAULT_NUM_SHARED_BUFFERS;
+}
+
+static struct spdk_nvmf_transport *
+nvmf_fc_create(struct spdk_nvmf_transport_opts *opts)
+{
+ uint32_t sge_count;
+
+ SPDK_INFOLOG(SPDK_LOG_NVMF_FC, "*** FC Transport Init ***\n"
+ " Transport opts: max_ioq_depth=%d, max_io_size=%d,\n"
+ " max_io_qpairs_per_ctrlr=%d, io_unit_size=%d,\n"
+ " max_aq_depth=%d\n",
+ opts->max_queue_depth,
+ opts->max_io_size,
+ opts->max_qpairs_per_ctrlr - 1,
+ opts->io_unit_size,
+ opts->max_aq_depth);
+
+ if (g_nvmf_ftransport) {
+ SPDK_ERRLOG("Duplicate NVMF-FC transport create request!\n");
+ return NULL;
+ }
+
+ if (spdk_env_get_last_core() < 1) {
+ SPDK_ERRLOG("Not enough cores/threads (%d) to run NVMF-FC transport!\n",
+ spdk_env_get_last_core() + 1);
+ return NULL;
+ }
+
+ sge_count = opts->max_io_size / opts->io_unit_size;
+ if (sge_count > SPDK_NVMF_FC_DEFAULT_MAX_SGE) {
+ SPDK_ERRLOG("Unsupported IO Unit size specified, %d bytes\n", opts->io_unit_size);
+ return NULL;
+ }
+
+ g_nvmf_fc_master_thread = spdk_get_thread();
+ g_nvmf_fgroup_count = 0;
+ g_nvmf_ftransport = calloc(1, sizeof(*g_nvmf_ftransport));
+
+ if (!g_nvmf_ftransport) {
+ SPDK_ERRLOG("Failed to allocate NVMF-FC transport\n");
+ return NULL;
+ }
+
+ if (pthread_mutex_init(&g_nvmf_ftransport->lock, NULL)) {
+ SPDK_ERRLOG("pthread_mutex_init() failed\n");
+ free(g_nvmf_ftransport);
+ g_nvmf_ftransport = NULL;
+ return NULL;
+ }
+
+ /* initialize the low level FC driver */
+ nvmf_fc_lld_init();
+
+ return &g_nvmf_ftransport->transport;
+}
+
+static int
+nvmf_fc_destroy(struct spdk_nvmf_transport *transport)
+{
+ if (transport) {
+ struct spdk_nvmf_fc_transport *ftransport;
+ struct spdk_nvmf_fc_poll_group *fgroup, *pg_tmp;
+
+ ftransport = SPDK_CONTAINEROF(transport, struct spdk_nvmf_fc_transport, transport);
+
+ free(ftransport);
+
+ /* clean up any FC poll groups still around */
+ TAILQ_FOREACH_SAFE(fgroup, &g_nvmf_fgroups, link, pg_tmp) {
+ TAILQ_REMOVE(&g_nvmf_fgroups, fgroup, link);
+ free(fgroup);
+ }
+ g_nvmf_fgroup_count = 0;
+
+ /* low level FC driver clean up */
+ nvmf_fc_lld_fini();
+
+ nvmf_fc_port_cleanup();
+ }
+
+ return 0;
+}
+
+static int
+nvmf_fc_listen(struct spdk_nvmf_transport *transport,
+ const struct spdk_nvme_transport_id *trid)
+{
+ return 0;
+}
+
+static void
+nvmf_fc_stop_listen(struct spdk_nvmf_transport *transport,
+ const struct spdk_nvme_transport_id *_trid)
+{
+}
+
+static uint32_t
+nvmf_fc_accept(struct spdk_nvmf_transport *transport)
+{
+ struct spdk_nvmf_fc_port *fc_port = NULL;
+ uint32_t count = 0;
+ static bool start_lld = false;
+
+ if (spdk_unlikely(!start_lld)) {
+ start_lld = true;
+ nvmf_fc_lld_start();
+ }
+
+ /* poll the LS queue on each port */
+ TAILQ_FOREACH(fc_port, &g_spdk_nvmf_fc_port_list, link) {
+ if (fc_port->hw_port_status == SPDK_FC_PORT_ONLINE) {
+ count += nvmf_fc_process_queue(&fc_port->ls_queue);
+ }
+ }
+
+ return count;
+}
+
+static void
+nvmf_fc_discover(struct spdk_nvmf_transport *transport,
+ struct spdk_nvme_transport_id *trid,
+ struct spdk_nvmf_discovery_log_page_entry *entry)
+{
+ entry->trtype = (enum spdk_nvme_transport_type) SPDK_NVMF_TRTYPE_FC;
+ entry->adrfam = trid->adrfam;
+ entry->treq.secure_channel = SPDK_NVMF_TREQ_SECURE_CHANNEL_NOT_SPECIFIED;
+
+ spdk_strcpy_pad(entry->trsvcid, trid->trsvcid, sizeof(entry->trsvcid), ' ');
+ spdk_strcpy_pad(entry->traddr, trid->traddr, sizeof(entry->traddr), ' ');
+}
+
+static struct spdk_nvmf_transport_poll_group *
+nvmf_fc_poll_group_create(struct spdk_nvmf_transport *transport)
+{
+ struct spdk_nvmf_fc_poll_group *fgroup;
+ struct spdk_nvmf_fc_transport *ftransport =
+ SPDK_CONTAINEROF(transport, struct spdk_nvmf_fc_transport, transport);
+
+ fgroup = calloc(1, sizeof(struct spdk_nvmf_fc_poll_group));
+ if (!fgroup) {
+ SPDK_ERRLOG("Unable to alloc FC poll group\n");
+ return NULL;
+ }
+
+ TAILQ_INIT(&fgroup->hwqp_list);
+
+ pthread_mutex_lock(&ftransport->lock);
+ TAILQ_INSERT_TAIL(&g_nvmf_fgroups, fgroup, link);
+ g_nvmf_fgroup_count++;
+ pthread_mutex_unlock(&ftransport->lock);
+
+ return &fgroup->group;
+}
+
+static void
+nvmf_fc_poll_group_destroy(struct spdk_nvmf_transport_poll_group *group)
+{
+ struct spdk_nvmf_fc_poll_group *fgroup;
+ struct spdk_nvmf_fc_transport *ftransport =
+ SPDK_CONTAINEROF(group->transport, struct spdk_nvmf_fc_transport, transport);
+
+ fgroup = SPDK_CONTAINEROF(group, struct spdk_nvmf_fc_poll_group, group);
+ pthread_mutex_lock(&ftransport->lock);
+ TAILQ_REMOVE(&g_nvmf_fgroups, fgroup, link);
+ g_nvmf_fgroup_count--;
+ pthread_mutex_unlock(&ftransport->lock);
+
+ free(fgroup);
+}
+
+static int
+nvmf_fc_poll_group_add(struct spdk_nvmf_transport_poll_group *group,
+ struct spdk_nvmf_qpair *qpair)
+{
+ struct spdk_nvmf_fc_poll_group *fgroup;
+ struct spdk_nvmf_fc_conn *fc_conn;
+ struct spdk_nvmf_fc_hwqp *hwqp = NULL;
+ struct spdk_nvmf_fc_ls_add_conn_api_data *api_data = NULL;
+ bool hwqp_found = false;
+
+ fgroup = SPDK_CONTAINEROF(group, struct spdk_nvmf_fc_poll_group, group);
+ fc_conn = SPDK_CONTAINEROF(qpair, struct spdk_nvmf_fc_conn, qpair);
+
+ TAILQ_FOREACH(hwqp, &fgroup->hwqp_list, link) {
+ if (fc_conn->fc_assoc->tgtport->fc_port == hwqp->fc_port) {
+ hwqp_found = true;
+ break;
+ }
+ }
+
+ if (!hwqp_found) {
+ SPDK_ERRLOG("No valid hwqp found for new QP.\n");
+ goto err;
+ }
+
+ if (!nvmf_fc_assign_conn_to_hwqp(hwqp,
+ &fc_conn->conn_id,
+ fc_conn->max_queue_depth)) {
+ SPDK_ERRLOG("Failed to get a connection id for new QP.\n");
+ goto err;
+ }
+
+ fc_conn->hwqp = hwqp;
+
+ /* If this is for ADMIN connection, then update assoc ID. */
+ if (fc_conn->qpair.qid == 0) {
+ fc_conn->fc_assoc->assoc_id = fc_conn->conn_id;
+ }
+
+ api_data = &fc_conn->create_opd->u.add_conn;
+ nvmf_fc_poller_api_func(hwqp, SPDK_NVMF_FC_POLLER_API_ADD_CONNECTION, &api_data->args);
+ return 0;
+err:
+ return -1;
+}
+
+static int
+nvmf_fc_poll_group_poll(struct spdk_nvmf_transport_poll_group *group)
+{
+ uint32_t count = 0;
+ struct spdk_nvmf_fc_poll_group *fgroup;
+ struct spdk_nvmf_fc_hwqp *hwqp;
+
+ fgroup = SPDK_CONTAINEROF(group, struct spdk_nvmf_fc_poll_group, group);
+
+ TAILQ_FOREACH(hwqp, &fgroup->hwqp_list, link) {
+ if (hwqp->state == SPDK_FC_HWQP_ONLINE) {
+ count += nvmf_fc_process_queue(hwqp);
+ }
+ }
+
+ return (int) count;
+}
+
+static int
+nvmf_fc_request_free(struct spdk_nvmf_request *req)
+{
+ struct spdk_nvmf_fc_request *fc_req = nvmf_fc_get_fc_req(req);
+
+ if (!fc_req->is_aborted) {
+ nvmf_fc_request_set_state(fc_req, SPDK_NVMF_FC_REQ_BDEV_ABORTED);
+ nvmf_fc_request_abort(fc_req, true, NULL, NULL);
+ } else {
+ nvmf_fc_request_abort_complete(fc_req);
+ }
+ return 0;
+}
+
+
+static void
+nvmf_fc_close_qpair(struct spdk_nvmf_qpair *qpair)
+{
+ struct spdk_nvmf_fc_conn *fc_conn;
+
+ fc_conn = SPDK_CONTAINEROF(qpair, struct spdk_nvmf_fc_conn, qpair);
+
+ if (fc_conn->conn_id == NVMF_FC_INVALID_CONN_ID) {
+ /* QP creation failure in FC tranport. Cleanup. */
+ spdk_thread_send_msg(nvmf_fc_get_master_thread(),
+ nvmf_fc_handle_connection_failure, fc_conn);
+ } else if (fc_conn->fc_assoc->assoc_id == fc_conn->conn_id &&
+ fc_conn->fc_assoc->assoc_state != SPDK_NVMF_FC_OBJECT_TO_BE_DELETED) {
+ /* Admin connection */
+ spdk_thread_send_msg(nvmf_fc_get_master_thread(),
+ nvmf_fc_handle_assoc_deletion, fc_conn);
+ }
+}
+
+static int
+nvmf_fc_qpair_get_peer_trid(struct spdk_nvmf_qpair *qpair,
+ struct spdk_nvme_transport_id *trid)
+{
+ struct spdk_nvmf_fc_conn *fc_conn;
+
+ fc_conn = SPDK_CONTAINEROF(qpair, struct spdk_nvmf_fc_conn, qpair);
+ memcpy(trid, &fc_conn->trid, sizeof(struct spdk_nvme_transport_id));
+ return 0;
+}
+
+static int
+nvmf_fc_qpair_get_local_trid(struct spdk_nvmf_qpair *qpair,
+ struct spdk_nvme_transport_id *trid)
+{
+ struct spdk_nvmf_fc_conn *fc_conn;
+
+ fc_conn = SPDK_CONTAINEROF(qpair, struct spdk_nvmf_fc_conn, qpair);
+ memcpy(trid, &fc_conn->trid, sizeof(struct spdk_nvme_transport_id));
+ return 0;
+}
+
+static int
+nvmf_fc_qpair_get_listen_trid(struct spdk_nvmf_qpair *qpair,
+ struct spdk_nvme_transport_id *trid)
+{
+ struct spdk_nvmf_fc_conn *fc_conn;
+
+ fc_conn = SPDK_CONTAINEROF(qpair, struct spdk_nvmf_fc_conn, qpair);
+ memcpy(trid, &fc_conn->trid, sizeof(struct spdk_nvme_transport_id));
+ return 0;
+}
+
+static void
+nvmf_fc_qpair_abort_request(struct spdk_nvmf_qpair *qpair,
+ struct spdk_nvmf_request *req)
+{
+ spdk_nvmf_request_complete(req);
+}
+
+const struct spdk_nvmf_transport_ops spdk_nvmf_transport_fc = {
+ .name = "FC",
+ .type = (enum spdk_nvme_transport_type) SPDK_NVMF_TRTYPE_FC,
+ .opts_init = nvmf_fc_opts_init,
+ .create = nvmf_fc_create,
+ .destroy = nvmf_fc_destroy,
+
+ .listen = nvmf_fc_listen,
+ .stop_listen = nvmf_fc_stop_listen,
+ .accept = nvmf_fc_accept,
+
+ .listener_discover = nvmf_fc_discover,
+
+ .poll_group_create = nvmf_fc_poll_group_create,
+ .poll_group_destroy = nvmf_fc_poll_group_destroy,
+ .poll_group_add = nvmf_fc_poll_group_add,
+ .poll_group_poll = nvmf_fc_poll_group_poll,
+
+ .req_complete = nvmf_fc_request_complete,
+ .req_free = nvmf_fc_request_free,
+ .qpair_fini = nvmf_fc_close_qpair,
+ .qpair_get_peer_trid = nvmf_fc_qpair_get_peer_trid,
+ .qpair_get_local_trid = nvmf_fc_qpair_get_local_trid,
+ .qpair_get_listen_trid = nvmf_fc_qpair_get_listen_trid,
+ .qpair_abort_request = nvmf_fc_qpair_abort_request,
+};
+
+/*
+ * Re-initialize the FC-Port after an offline event.
+ * Only the queue information needs to be populated. XCHG, lcore and other hwqp information remains
+ * unchanged after the first initialization.
+ *
+ */
+static int
+nvmf_fc_adm_hw_port_reinit_validate(struct spdk_nvmf_fc_port *fc_port,
+ struct spdk_nvmf_fc_hw_port_init_args *args)
+{
+ uint32_t i;
+
+ /* Verify that the port was previously in offline or quiesced state */
+ if (nvmf_fc_port_is_online(fc_port)) {
+ SPDK_ERRLOG("SPDK FC port %d already initialized and online.\n", args->port_handle);
+ return -EINVAL;
+ }
+
+ /* Reinit information in new LS queue from previous queue */
+ nvmf_fc_hwqp_reinit_poller_queues(&fc_port->ls_queue, args->ls_queue);
+
+ fc_port->fcp_rq_id = args->fcp_rq_id;
+
+ /* Initialize the LS queue */
+ fc_port->ls_queue.queues = args->ls_queue;
+ nvmf_fc_init_poller_queues(fc_port->ls_queue.queues);
+
+ for (i = 0; i < fc_port->num_io_queues; i++) {
+ /* Reinit information in new IO queue from previous queue */
+ nvmf_fc_hwqp_reinit_poller_queues(&fc_port->io_queues[i],
+ args->io_queues[i]);
+ fc_port->io_queues[i].queues = args->io_queues[i];
+ /* Initialize the IO queues */
+ nvmf_fc_init_poller_queues(fc_port->io_queues[i].queues);
+ }
+
+ fc_port->hw_port_status = SPDK_FC_PORT_OFFLINE;
+
+ /* Validate the port information */
+ DEV_VERIFY(TAILQ_EMPTY(&fc_port->nport_list));
+ DEV_VERIFY(fc_port->num_nports == 0);
+ if (!TAILQ_EMPTY(&fc_port->nport_list) || (fc_port->num_nports != 0)) {
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* Initializes the data for the creation of a FC-Port object in the SPDK
+ * library. The spdk_nvmf_fc_port is a well defined structure that is part of
+ * the API to the library. The contents added to this well defined structure
+ * is private to each vendors implementation.
+ */
+static int
+nvmf_fc_adm_hw_port_data_init(struct spdk_nvmf_fc_port *fc_port,
+ struct spdk_nvmf_fc_hw_port_init_args *args)
+{
+ /* Used a high number for the LS HWQP so that it does not clash with the
+ * IO HWQP's and immediately shows a LS queue during tracing.
+ */
+ uint32_t i;
+
+ fc_port->port_hdl = args->port_handle;
+ fc_port->hw_port_status = SPDK_FC_PORT_OFFLINE;
+ fc_port->fcp_rq_id = args->fcp_rq_id;
+ fc_port->num_io_queues = args->io_queue_cnt;
+
+ /*
+ * Set port context from init args. Used for FCP port stats.
+ */
+ fc_port->port_ctx = args->port_ctx;
+
+ /*
+ * Initialize the LS queue wherever needed.
+ */
+ fc_port->ls_queue.queues = args->ls_queue;
+ fc_port->ls_queue.thread = nvmf_fc_get_master_thread();
+ fc_port->ls_queue.hwqp_id = SPDK_MAX_NUM_OF_FC_PORTS * fc_port->num_io_queues;
+
+ /*
+ * Initialize the LS queue.
+ */
+ nvmf_fc_init_hwqp(fc_port, &fc_port->ls_queue);
+
+ /*
+ * Initialize the IO queues.
+ */
+ for (i = 0; i < args->io_queue_cnt; i++) {
+ struct spdk_nvmf_fc_hwqp *hwqp = &fc_port->io_queues[i];
+ hwqp->hwqp_id = i;
+ hwqp->queues = args->io_queues[i];
+ hwqp->rq_size = args->io_queue_size;
+ nvmf_fc_init_hwqp(fc_port, hwqp);
+ }
+
+ /*
+ * Initialize the LS processing for port
+ */
+ nvmf_fc_ls_init(fc_port);
+
+ /*
+ * Initialize the list of nport on this HW port.
+ */
+ TAILQ_INIT(&fc_port->nport_list);
+ fc_port->num_nports = 0;
+
+ return 0;
+}
+
+static void
+nvmf_fc_adm_port_hwqp_offline_del_poller(struct spdk_nvmf_fc_port *fc_port)
+{
+ struct spdk_nvmf_fc_hwqp *hwqp = NULL;
+ int i = 0;
+
+ hwqp = &fc_port->ls_queue;
+ (void)nvmf_fc_hwqp_set_offline(hwqp);
+
+ /* Remove poller for all the io queues. */
+ for (i = 0; i < (int)fc_port->num_io_queues; i++) {
+ hwqp = &fc_port->io_queues[i];
+ (void)nvmf_fc_hwqp_set_offline(hwqp);
+ nvmf_fc_poll_group_remove_hwqp(hwqp);
+ }
+}
+
+/*
+ * Callback function for HW port link break operation.
+ *
+ * Notice that this callback is being triggered when spdk_fc_nport_delete()
+ * completes, if that spdk_fc_nport_delete() called is issued by
+ * nvmf_fc_adm_evnt_hw_port_link_break().
+ *
+ * Since nvmf_fc_adm_evnt_hw_port_link_break() can invoke spdk_fc_nport_delete() multiple
+ * times (one per nport in the HW port's nport_list), a single call to
+ * nvmf_fc_adm_evnt_hw_port_link_break() can result in multiple calls to this callback function.
+ *
+ * As a result, this function only invokes a callback to the caller of
+ * nvmf_fc_adm_evnt_hw_port_link_break() only when the HW port's nport_list is empty.
+ */
+static void
+nvmf_fc_adm_hw_port_link_break_cb(uint8_t port_handle,
+ enum spdk_fc_event event_type, void *cb_args, int spdk_err)
+{
+ ASSERT_SPDK_FC_MASTER_THREAD();
+ struct spdk_nvmf_fc_adm_port_link_break_cb_data *offline_cb_args = cb_args;
+ struct spdk_nvmf_hw_port_link_break_args *offline_args = NULL;
+ spdk_nvmf_fc_callback cb_func = NULL;
+ int err = 0;
+ struct spdk_nvmf_fc_port *fc_port = NULL;
+ int num_nports = 0;
+ char log_str[256];
+
+ if (0 != spdk_err) {
+ DEV_VERIFY(!"port link break cb: spdk_err not success.");
+ SPDK_ERRLOG("port link break cb: spdk_err:%d.\n", spdk_err);
+ goto out;
+ }
+
+ if (!offline_cb_args) {
+ DEV_VERIFY(!"port link break cb: port_offline_args is NULL.");
+ err = -EINVAL;
+ goto out;
+ }
+
+ offline_args = offline_cb_args->args;
+ if (!offline_args) {
+ DEV_VERIFY(!"port link break cb: offline_args is NULL.");
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (port_handle != offline_args->port_handle) {
+ DEV_VERIFY(!"port link break cb: port_handle mismatch.");
+ err = -EINVAL;
+ goto out;
+ }
+
+ cb_func = offline_cb_args->cb_func;
+ if (!cb_func) {
+ DEV_VERIFY(!"port link break cb: cb_func is NULL.");
+ err = -EINVAL;
+ goto out;
+ }
+
+ fc_port = nvmf_fc_port_lookup(port_handle);
+ if (!fc_port) {
+ DEV_VERIFY(!"port link break cb: fc_port is NULL.");
+ SPDK_ERRLOG("port link break cb: Unable to find port:%d\n",
+ offline_args->port_handle);
+ err = -EINVAL;
+ goto out;
+ }
+
+ num_nports = fc_port->num_nports;
+ if (!TAILQ_EMPTY(&fc_port->nport_list)) {
+ /*
+ * Don't call the callback unless all nports have been deleted.
+ */
+ goto out;
+ }
+
+ if (num_nports != 0) {
+ DEV_VERIFY(!"port link break cb: num_nports in non-zero.");
+ SPDK_ERRLOG("port link break cb: # of ports should be 0. Instead, num_nports:%d\n",
+ num_nports);
+ err = -EINVAL;
+ }
+
+ /*
+ * Mark the hwqps as offline and unregister the pollers.
+ */
+ (void)nvmf_fc_adm_port_hwqp_offline_del_poller(fc_port);
+
+ /*
+ * Since there are no more nports, execute the callback(s).
+ */
+ (void)cb_func(port_handle, SPDK_FC_LINK_BREAK,
+ (void *)offline_args->cb_ctx, spdk_err);
+
+out:
+ free(offline_cb_args);
+
+ snprintf(log_str, sizeof(log_str),
+ "port link break cb: port:%d evt_type:%d num_nports:%d err:%d spdk_err:%d.\n",
+ port_handle, event_type, num_nports, err, spdk_err);
+
+ if (err != 0) {
+ SPDK_ERRLOG("%s", log_str);
+ } else {
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "%s", log_str);
+ }
+ return;
+}
+
+/*
+ * FC port must have all its nports deleted before transitioning to offline state.
+ */
+static void
+nvmf_fc_adm_hw_port_offline_nport_delete(struct spdk_nvmf_fc_port *fc_port)
+{
+ struct spdk_nvmf_fc_nport *nport = NULL;
+ /* All nports must have been deleted at this point for this fc port */
+ DEV_VERIFY(fc_port && TAILQ_EMPTY(&fc_port->nport_list));
+ DEV_VERIFY(fc_port->num_nports == 0);
+ /* Mark the nport states to be zombie, if they exist */
+ if (fc_port && !TAILQ_EMPTY(&fc_port->nport_list)) {
+ TAILQ_FOREACH(nport, &fc_port->nport_list, link) {
+ (void)nvmf_fc_nport_set_state(nport, SPDK_NVMF_FC_OBJECT_ZOMBIE);
+ }
+ }
+}
+
+static void
+nvmf_fc_adm_i_t_delete_cb(void *args, uint32_t err)
+{
+ ASSERT_SPDK_FC_MASTER_THREAD();
+ struct spdk_nvmf_fc_adm_i_t_del_cb_data *cb_data = args;
+ struct spdk_nvmf_fc_nport *nport = cb_data->nport;
+ struct spdk_nvmf_fc_remote_port_info *rport = cb_data->rport;
+ spdk_nvmf_fc_callback cb_func = cb_data->fc_cb_func;
+ int spdk_err = 0;
+ uint8_t port_handle = cb_data->port_handle;
+ uint32_t s_id = rport->s_id;
+ uint32_t rpi = rport->rpi;
+ uint32_t assoc_count = rport->assoc_count;
+ uint32_t nport_hdl = nport->nport_hdl;
+ uint32_t d_id = nport->d_id;
+ char log_str[256];
+
+ /*
+ * Assert on any delete failure.
+ */
+ if (0 != err) {
+ DEV_VERIFY(!"Error in IT Delete callback.");
+ goto out;
+ }
+
+ if (cb_func != NULL) {
+ (void)cb_func(port_handle, SPDK_FC_IT_DELETE, cb_data->fc_cb_ctx, spdk_err);
+ }
+
+out:
+ free(cb_data);
+
+ snprintf(log_str, sizeof(log_str),
+ "IT delete assoc_cb on nport %d done, port_handle:%d s_id:%d d_id:%d rpi:%d rport_assoc_count:%d rc = %d.\n",
+ nport_hdl, port_handle, s_id, d_id, rpi, assoc_count, err);
+
+ if (err != 0) {
+ SPDK_ERRLOG("%s", log_str);
+ } else {
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "%s", log_str);
+ }
+}
+
+static void
+nvmf_fc_adm_i_t_delete_assoc_cb(void *args, uint32_t err)
+{
+ ASSERT_SPDK_FC_MASTER_THREAD();
+ struct spdk_nvmf_fc_adm_i_t_del_assoc_cb_data *cb_data = args;
+ struct spdk_nvmf_fc_nport *nport = cb_data->nport;
+ struct spdk_nvmf_fc_remote_port_info *rport = cb_data->rport;
+ spdk_nvmf_fc_adm_i_t_delete_assoc_cb_fn cb_func = cb_data->cb_func;
+ uint32_t s_id = rport->s_id;
+ uint32_t rpi = rport->rpi;
+ uint32_t assoc_count = rport->assoc_count;
+ uint32_t nport_hdl = nport->nport_hdl;
+ uint32_t d_id = nport->d_id;
+ char log_str[256];
+
+ /*
+ * Assert on any association delete failure. We continue to delete other
+ * associations in promoted builds.
+ */
+ if (0 != err) {
+ DEV_VERIFY(!"Nport's association delete callback returned error");
+ if (nport->assoc_count > 0) {
+ nport->assoc_count--;
+ }
+ if (rport->assoc_count > 0) {
+ rport->assoc_count--;
+ }
+ }
+
+ /*
+ * If this is the last association being deleted for the ITN,
+ * execute the callback(s).
+ */
+ if (0 == rport->assoc_count) {
+ /* Remove the rport from the remote port list. */
+ if (nvmf_fc_nport_remove_rem_port(nport, rport) != 0) {
+ SPDK_ERRLOG("Error while removing rport from list.\n");
+ DEV_VERIFY(!"Error while removing rport from list.");
+ }
+
+ if (cb_func != NULL) {
+ /*
+ * Callback function is provided by the caller
+ * of nvmf_fc_adm_i_t_delete_assoc().
+ */
+ (void)cb_func(cb_data->cb_ctx, 0);
+ }
+ free(rport);
+ free(args);
+ }
+
+ snprintf(log_str, sizeof(log_str),
+ "IT delete assoc_cb on nport %d done, s_id:%d d_id:%d rpi:%d rport_assoc_count:%d err = %d.\n",
+ nport_hdl, s_id, d_id, rpi, assoc_count, err);
+
+ if (err != 0) {
+ SPDK_ERRLOG("%s", log_str);
+ } else {
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "%s", log_str);
+ }
+}
+
+/**
+ * Process a IT delete.
+ */
+static void
+nvmf_fc_adm_i_t_delete_assoc(struct spdk_nvmf_fc_nport *nport,
+ struct spdk_nvmf_fc_remote_port_info *rport,
+ spdk_nvmf_fc_adm_i_t_delete_assoc_cb_fn cb_func,
+ void *cb_ctx)
+{
+ int err = 0;
+ struct spdk_nvmf_fc_association *assoc = NULL;
+ int assoc_err = 0;
+ uint32_t num_assoc = 0;
+ uint32_t num_assoc_del_scheduled = 0;
+ struct spdk_nvmf_fc_adm_i_t_del_assoc_cb_data *cb_data = NULL;
+ uint8_t port_hdl = nport->port_hdl;
+ uint32_t s_id = rport->s_id;
+ uint32_t rpi = rport->rpi;
+ uint32_t assoc_count = rport->assoc_count;
+ char log_str[256];
+
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "IT delete associations on nport:%d begin.\n",
+ nport->nport_hdl);
+
+ /*
+ * Allocate memory for callback data.
+ * This memory will be freed by the callback function.
+ */
+ cb_data = calloc(1, sizeof(struct spdk_nvmf_fc_adm_i_t_del_assoc_cb_data));
+ if (NULL == cb_data) {
+ SPDK_ERRLOG("Failed to allocate memory for cb_data on nport:%d.\n", nport->nport_hdl);
+ err = -ENOMEM;
+ goto out;
+ }
+ cb_data->nport = nport;
+ cb_data->rport = rport;
+ cb_data->port_handle = port_hdl;
+ cb_data->cb_func = cb_func;
+ cb_data->cb_ctx = cb_ctx;
+
+ /*
+ * Delete all associations, if any, related with this ITN/remote_port.
+ */
+ TAILQ_FOREACH(assoc, &nport->fc_associations, link) {
+ num_assoc++;
+ if (assoc->s_id == s_id) {
+ assoc_err = nvmf_fc_delete_association(nport,
+ assoc->assoc_id,
+ false /* send abts */, false,
+ nvmf_fc_adm_i_t_delete_assoc_cb, cb_data);
+ if (0 != assoc_err) {
+ /*
+ * Mark this association as zombie.
+ */
+ err = -EINVAL;
+ DEV_VERIFY(!"Error while deleting association");
+ (void)nvmf_fc_assoc_set_state(assoc, SPDK_NVMF_FC_OBJECT_ZOMBIE);
+ } else {
+ num_assoc_del_scheduled++;
+ }
+ }
+ }
+
+out:
+ if ((cb_data) && (num_assoc_del_scheduled == 0)) {
+ /*
+ * Since there are no association_delete calls
+ * successfully scheduled, the association_delete
+ * callback function will never be called.
+ * In this case, call the callback function now.
+ */
+ nvmf_fc_adm_i_t_delete_assoc_cb(cb_data, 0);
+ }
+
+ snprintf(log_str, sizeof(log_str),
+ "IT delete associations on nport:%d end. "
+ "s_id:%d rpi:%d assoc_count:%d assoc:%d assoc_del_scheduled:%d rc:%d.\n",
+ nport->nport_hdl, s_id, rpi, assoc_count, num_assoc, num_assoc_del_scheduled, err);
+
+ if (err == 0) {
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "%s", log_str);
+ } else {
+ SPDK_ERRLOG("%s", log_str);
+ }
+}
+
+static void
+nvmf_fc_adm_queue_quiesce_cb(void *cb_data, enum spdk_nvmf_fc_poller_api_ret ret)
+{
+ ASSERT_SPDK_FC_MASTER_THREAD();
+ struct spdk_nvmf_fc_poller_api_quiesce_queue_args *quiesce_api_data = NULL;
+ struct spdk_nvmf_fc_adm_hw_port_quiesce_ctx *port_quiesce_ctx = NULL;
+ struct spdk_nvmf_fc_hwqp *hwqp = NULL;
+ struct spdk_nvmf_fc_port *fc_port = NULL;
+ int err = 0;
+
+ quiesce_api_data = (struct spdk_nvmf_fc_poller_api_quiesce_queue_args *)cb_data;
+ hwqp = quiesce_api_data->hwqp;
+ fc_port = hwqp->fc_port;
+ port_quiesce_ctx = (struct spdk_nvmf_fc_adm_hw_port_quiesce_ctx *)quiesce_api_data->ctx;
+ spdk_nvmf_fc_adm_hw_port_quiesce_cb_fn cb_func = port_quiesce_ctx->cb_func;
+
+ /*
+ * Decrement the callback/quiesced queue count.
+ */
+ port_quiesce_ctx->quiesce_count--;
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "Queue%d Quiesced\n", quiesce_api_data->hwqp->hwqp_id);
+
+ free(quiesce_api_data);
+ /*
+ * Wait for call backs i.e. max_ioq_queues + LS QUEUE.
+ */
+ if (port_quiesce_ctx->quiesce_count > 0) {
+ return;
+ }
+
+ if (fc_port->hw_port_status == SPDK_FC_PORT_QUIESCED) {
+ SPDK_ERRLOG("Port %d already in quiesced state.\n", fc_port->port_hdl);
+ } else {
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "HW port %d quiesced.\n", fc_port->port_hdl);
+ fc_port->hw_port_status = SPDK_FC_PORT_QUIESCED;
+ }
+
+ if (cb_func) {
+ /*
+ * Callback function for the called of quiesce.
+ */
+ cb_func(port_quiesce_ctx->ctx, err);
+ }
+
+ /*
+ * Free the context structure.
+ */
+ free(port_quiesce_ctx);
+
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "HW port %d quiesce done, rc = %d.\n", fc_port->port_hdl,
+ err);
+}
+
+static int
+nvmf_fc_adm_hw_queue_quiesce(struct spdk_nvmf_fc_hwqp *fc_hwqp, void *ctx,
+ spdk_nvmf_fc_poller_api_cb cb_func)
+{
+ struct spdk_nvmf_fc_poller_api_quiesce_queue_args *args;
+ enum spdk_nvmf_fc_poller_api_ret rc = SPDK_NVMF_FC_POLLER_API_SUCCESS;
+ int err = 0;
+
+ args = calloc(1, sizeof(struct spdk_nvmf_fc_poller_api_quiesce_queue_args));
+
+ if (args == NULL) {
+ err = -ENOMEM;
+ SPDK_ERRLOG("Failed to allocate memory for poller quiesce args, hwqp:%d\n", fc_hwqp->hwqp_id);
+ goto done;
+ }
+ args->hwqp = fc_hwqp;
+ args->ctx = ctx;
+ args->cb_info.cb_func = cb_func;
+ args->cb_info.cb_data = args;
+ args->cb_info.cb_thread = spdk_get_thread();
+
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "Quiesce queue %d\n", fc_hwqp->hwqp_id);
+ rc = nvmf_fc_poller_api_func(fc_hwqp, SPDK_NVMF_FC_POLLER_API_QUIESCE_QUEUE, args);
+ if (rc) {
+ free(args);
+ err = -EINVAL;
+ }
+
+done:
+ return err;
+}
+
+/*
+ * Hw port Quiesce
+ */
+static int
+nvmf_fc_adm_hw_port_quiesce(struct spdk_nvmf_fc_port *fc_port, void *ctx,
+ spdk_nvmf_fc_adm_hw_port_quiesce_cb_fn cb_func)
+{
+ struct spdk_nvmf_fc_adm_hw_port_quiesce_ctx *port_quiesce_ctx = NULL;
+ uint32_t i = 0;
+ int err = 0;
+
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "HW port:%d is being quiesced.\n", fc_port->port_hdl);
+
+ /*
+ * If the port is in an OFFLINE state, set the state to QUIESCED
+ * and execute the callback.
+ */
+ if (fc_port->hw_port_status == SPDK_FC_PORT_OFFLINE) {
+ fc_port->hw_port_status = SPDK_FC_PORT_QUIESCED;
+ }
+
+ if (fc_port->hw_port_status == SPDK_FC_PORT_QUIESCED) {
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "Port %d already in quiesced state.\n",
+ fc_port->port_hdl);
+ /*
+ * Execute the callback function directly.
+ */
+ cb_func(ctx, err);
+ goto out;
+ }
+
+ port_quiesce_ctx = calloc(1, sizeof(struct spdk_nvmf_fc_adm_hw_port_quiesce_ctx));
+
+ if (port_quiesce_ctx == NULL) {
+ err = -ENOMEM;
+ SPDK_ERRLOG("Failed to allocate memory for LS queue quiesce ctx, port:%d\n",
+ fc_port->port_hdl);
+ goto out;
+ }
+
+ port_quiesce_ctx->quiesce_count = 0;
+ port_quiesce_ctx->ctx = ctx;
+ port_quiesce_ctx->cb_func = cb_func;
+
+ /*
+ * Quiesce the LS queue.
+ */
+ err = nvmf_fc_adm_hw_queue_quiesce(&fc_port->ls_queue, port_quiesce_ctx,
+ nvmf_fc_adm_queue_quiesce_cb);
+ if (err != 0) {
+ SPDK_ERRLOG("Failed to quiesce the LS queue.\n");
+ goto out;
+ }
+ port_quiesce_ctx->quiesce_count++;
+
+ /*
+ * Quiesce the IO queues.
+ */
+ for (i = 0; i < fc_port->num_io_queues; i++) {
+ err = nvmf_fc_adm_hw_queue_quiesce(&fc_port->io_queues[i],
+ port_quiesce_ctx,
+ nvmf_fc_adm_queue_quiesce_cb);
+ if (err != 0) {
+ DEV_VERIFY(0);
+ SPDK_ERRLOG("Failed to quiesce the IO queue:%d.\n", fc_port->io_queues[i].hwqp_id);
+ }
+ port_quiesce_ctx->quiesce_count++;
+ }
+
+out:
+ if (port_quiesce_ctx && err != 0) {
+ free(port_quiesce_ctx);
+ }
+ return err;
+}
+
+/*
+ * Initialize and add a HW port entry to the global
+ * HW port list.
+ */
+static void
+nvmf_fc_adm_evnt_hw_port_init(void *arg)
+{
+ ASSERT_SPDK_FC_MASTER_THREAD();
+ struct spdk_nvmf_fc_port *fc_port = NULL;
+ struct spdk_nvmf_fc_adm_api_data *api_data = (struct spdk_nvmf_fc_adm_api_data *)arg;
+ struct spdk_nvmf_fc_hw_port_init_args *args = (struct spdk_nvmf_fc_hw_port_init_args *)
+ api_data->api_args;
+ int err = 0;
+
+ if (args->io_queue_cnt > spdk_env_get_core_count()) {
+ SPDK_ERRLOG("IO queues count greater than cores for %d.\n", args->port_handle);
+ err = EINVAL;
+ goto abort_port_init;
+ }
+
+ /*
+ * 1. Check for duplicate initialization.
+ */
+ fc_port = nvmf_fc_port_lookup(args->port_handle);
+ if (fc_port != NULL) {
+ /* Port already exists, check if it has to be re-initialized */
+ err = nvmf_fc_adm_hw_port_reinit_validate(fc_port, args);
+ if (err) {
+ /*
+ * In case of an error we do not want to free the fc_port
+ * so we set that pointer to NULL.
+ */
+ fc_port = NULL;
+ }
+ goto abort_port_init;
+ }
+
+ /*
+ * 2. Get the memory to instantiate a fc port.
+ */
+ fc_port = calloc(1, sizeof(struct spdk_nvmf_fc_port) +
+ (args->io_queue_cnt * sizeof(struct spdk_nvmf_fc_hwqp)));
+ if (fc_port == NULL) {
+ SPDK_ERRLOG("Failed to allocate memory for fc_port %d.\n", args->port_handle);
+ err = -ENOMEM;
+ goto abort_port_init;
+ }
+
+ /* assign the io_queues array */
+ fc_port->io_queues = (struct spdk_nvmf_fc_hwqp *)((uint8_t *)fc_port + sizeof(
+ struct spdk_nvmf_fc_port));
+
+ /*
+ * 3. Initialize the contents for the FC-port
+ */
+ err = nvmf_fc_adm_hw_port_data_init(fc_port, args);
+
+ if (err != 0) {
+ SPDK_ERRLOG("Data initialization failed for fc_port %d.\n", args->port_handle);
+ DEV_VERIFY(!"Data initialization failed for fc_port");
+ goto abort_port_init;
+ }
+
+ /*
+ * 4. Add this port to the global fc port list in the library.
+ */
+ nvmf_fc_port_add(fc_port);
+
+abort_port_init:
+ if (err && fc_port) {
+ free(fc_port);
+ }
+ if (api_data->cb_func != NULL) {
+ (void)api_data->cb_func(args->port_handle, SPDK_FC_HW_PORT_INIT, args->cb_ctx, err);
+ }
+
+ free(arg);
+
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "HW port %d initialize done, rc = %d.\n",
+ args->port_handle, err);
+}
+
+/*
+ * Online a HW port.
+ */
+static void
+nvmf_fc_adm_evnt_hw_port_online(void *arg)
+{
+ ASSERT_SPDK_FC_MASTER_THREAD();
+ struct spdk_nvmf_fc_port *fc_port = NULL;
+ struct spdk_nvmf_fc_hwqp *hwqp = NULL;
+ struct spdk_nvmf_fc_adm_api_data *api_data = (struct spdk_nvmf_fc_adm_api_data *)arg;
+ struct spdk_nvmf_fc_hw_port_online_args *args = (struct spdk_nvmf_fc_hw_port_online_args *)
+ api_data->api_args;
+ int i = 0;
+ int err = 0;
+
+ fc_port = nvmf_fc_port_lookup(args->port_handle);
+ if (fc_port) {
+ /* Set the port state to online */
+ err = nvmf_fc_port_set_online(fc_port);
+ if (err != 0) {
+ SPDK_ERRLOG("Hw port %d online failed. err = %d\n", fc_port->port_hdl, err);
+ DEV_VERIFY(!"Hw port online failed");
+ goto out;
+ }
+
+ hwqp = &fc_port->ls_queue;
+ hwqp->context = NULL;
+ (void)nvmf_fc_hwqp_set_online(hwqp);
+
+ /* Cycle through all the io queues and setup a hwqp poller for each. */
+ for (i = 0; i < (int)fc_port->num_io_queues; i++) {
+ hwqp = &fc_port->io_queues[i];
+ hwqp->context = NULL;
+ (void)nvmf_fc_hwqp_set_online(hwqp);
+ nvmf_fc_poll_group_add_hwqp(hwqp);
+ }
+ } else {
+ SPDK_ERRLOG("Unable to find the SPDK FC port %d\n", args->port_handle);
+ err = -EINVAL;
+ }
+
+out:
+ if (api_data->cb_func != NULL) {
+ (void)api_data->cb_func(args->port_handle, SPDK_FC_HW_PORT_ONLINE, args->cb_ctx, err);
+ }
+
+ free(arg);
+
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "HW port %d online done, rc = %d.\n", args->port_handle,
+ err);
+}
+
+/*
+ * Offline a HW port.
+ */
+static void
+nvmf_fc_adm_evnt_hw_port_offline(void *arg)
+{
+ ASSERT_SPDK_FC_MASTER_THREAD();
+ struct spdk_nvmf_fc_port *fc_port = NULL;
+ struct spdk_nvmf_fc_hwqp *hwqp = NULL;
+ struct spdk_nvmf_fc_adm_api_data *api_data = (struct spdk_nvmf_fc_adm_api_data *)arg;
+ struct spdk_nvmf_fc_hw_port_offline_args *args = (struct spdk_nvmf_fc_hw_port_offline_args *)
+ api_data->api_args;
+ int i = 0;
+ int err = 0;
+
+ fc_port = nvmf_fc_port_lookup(args->port_handle);
+ if (fc_port) {
+ /* Set the port state to offline, if it is not already. */
+ err = nvmf_fc_port_set_offline(fc_port);
+ if (err != 0) {
+ SPDK_ERRLOG("Hw port %d already offline. err = %d\n", fc_port->port_hdl, err);
+ err = 0;
+ goto out;
+ }
+
+ hwqp = &fc_port->ls_queue;
+ (void)nvmf_fc_hwqp_set_offline(hwqp);
+
+ /* Remove poller for all the io queues. */
+ for (i = 0; i < (int)fc_port->num_io_queues; i++) {
+ hwqp = &fc_port->io_queues[i];
+ (void)nvmf_fc_hwqp_set_offline(hwqp);
+ nvmf_fc_poll_group_remove_hwqp(hwqp);
+ }
+
+ /*
+ * Delete all the nports. Ideally, the nports should have been purged
+ * before the offline event, in which case, only a validation is required.
+ */
+ nvmf_fc_adm_hw_port_offline_nport_delete(fc_port);
+ } else {
+ SPDK_ERRLOG("Unable to find the SPDK FC port %d\n", args->port_handle);
+ err = -EINVAL;
+ }
+out:
+ if (api_data->cb_func != NULL) {
+ (void)api_data->cb_func(args->port_handle, SPDK_FC_HW_PORT_OFFLINE, args->cb_ctx, err);
+ }
+
+ free(arg);
+
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "HW port %d offline done, rc = %d.\n", args->port_handle,
+ err);
+}
+
+struct nvmf_fc_add_rem_listener_ctx {
+ struct spdk_nvmf_subsystem *subsystem;
+ bool add_listener;
+ struct spdk_nvme_transport_id trid;
+};
+
+static void
+nvmf_fc_adm_subsystem_resume_cb(struct spdk_nvmf_subsystem *subsystem, void *cb_arg, int status)
+{
+ ASSERT_SPDK_FC_MASTER_THREAD();
+ struct nvmf_fc_add_rem_listener_ctx *ctx = (struct nvmf_fc_add_rem_listener_ctx *)cb_arg;
+ free(ctx);
+}
+
+static void
+nvmf_fc_adm_listen_done(void *cb_arg, int status)
+{
+ ASSERT_SPDK_FC_MASTER_THREAD();
+ struct nvmf_fc_add_rem_listener_ctx *ctx = cb_arg;
+
+ if (spdk_nvmf_subsystem_resume(ctx->subsystem, nvmf_fc_adm_subsystem_resume_cb, ctx)) {
+ SPDK_ERRLOG("Failed to resume subsystem: %s\n", ctx->subsystem->subnqn);
+ free(ctx);
+ }
+}
+
+static void
+nvmf_fc_adm_subsystem_paused_cb(struct spdk_nvmf_subsystem *subsystem, void *cb_arg, int status)
+{
+ ASSERT_SPDK_FC_MASTER_THREAD();
+ struct nvmf_fc_add_rem_listener_ctx *ctx = (struct nvmf_fc_add_rem_listener_ctx *)cb_arg;
+
+ if (ctx->add_listener) {
+ spdk_nvmf_subsystem_add_listener(subsystem, &ctx->trid, nvmf_fc_adm_listen_done, ctx);
+ } else {
+ spdk_nvmf_subsystem_remove_listener(subsystem, &ctx->trid);
+ nvmf_fc_adm_listen_done(ctx, 0);
+ }
+}
+
+static int
+nvmf_fc_adm_add_rem_nport_listener(struct spdk_nvmf_fc_nport *nport, bool add)
+{
+ struct spdk_nvmf_tgt *tgt = nvmf_fc_get_tgt();
+ struct spdk_nvmf_subsystem *subsystem;
+
+ if (!tgt) {
+ SPDK_ERRLOG("No nvmf target defined\n");
+ return -EINVAL;
+ }
+
+ subsystem = spdk_nvmf_subsystem_get_first(tgt);
+ while (subsystem) {
+ struct nvmf_fc_add_rem_listener_ctx *ctx;
+
+ if (spdk_nvmf_subsytem_any_listener_allowed(subsystem) == true) {
+ ctx = calloc(1, sizeof(struct nvmf_fc_add_rem_listener_ctx));
+ if (ctx) {
+ ctx->add_listener = add;
+ ctx->subsystem = subsystem;
+ nvmf_fc_create_trid(&ctx->trid,
+ nport->fc_nodename.u.wwn,
+ nport->fc_portname.u.wwn);
+
+ if (spdk_nvmf_tgt_listen(subsystem->tgt, &ctx->trid)) {
+ SPDK_ERRLOG("Failed to add transport address %s to tgt listeners\n",
+ ctx->trid.traddr);
+ free(ctx);
+ } else if (spdk_nvmf_subsystem_pause(subsystem,
+ nvmf_fc_adm_subsystem_paused_cb,
+ ctx)) {
+ SPDK_ERRLOG("Failed to pause subsystem: %s\n",
+ subsystem->subnqn);
+ free(ctx);
+ }
+ }
+ }
+
+ subsystem = spdk_nvmf_subsystem_get_next(subsystem);
+ }
+
+ return 0;
+}
+
+/*
+ * Create a Nport.
+ */
+static void
+nvmf_fc_adm_evnt_nport_create(void *arg)
+{
+ ASSERT_SPDK_FC_MASTER_THREAD();
+ struct spdk_nvmf_fc_adm_api_data *api_data = (struct spdk_nvmf_fc_adm_api_data *)arg;
+ struct spdk_nvmf_fc_nport_create_args *args = (struct spdk_nvmf_fc_nport_create_args *)
+ api_data->api_args;
+ struct spdk_nvmf_fc_nport *nport = NULL;
+ struct spdk_nvmf_fc_port *fc_port = NULL;
+ int err = 0;
+
+ /*
+ * Get the physical port.
+ */
+ fc_port = nvmf_fc_port_lookup(args->port_handle);
+ if (fc_port == NULL) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ /*
+ * Check for duplicate initialization.
+ */
+ nport = nvmf_fc_nport_find(args->port_handle, args->nport_handle);
+ if (nport != NULL) {
+ SPDK_ERRLOG("Duplicate SPDK FC nport %d exists for FC port:%d.\n", args->nport_handle,
+ args->port_handle);
+ err = -EINVAL;
+ goto out;
+ }
+
+ /*
+ * Get the memory to instantiate a fc nport.
+ */
+ nport = calloc(1, sizeof(struct spdk_nvmf_fc_nport));
+ if (nport == NULL) {
+ SPDK_ERRLOG("Failed to allocate memory for nport %d.\n",
+ args->nport_handle);
+ err = -ENOMEM;
+ goto out;
+ }
+
+ /*
+ * Initialize the contents for the nport
+ */
+ nport->nport_hdl = args->nport_handle;
+ nport->port_hdl = args->port_handle;
+ nport->nport_state = SPDK_NVMF_FC_OBJECT_CREATED;
+ nport->fc_nodename = args->fc_nodename;
+ nport->fc_portname = args->fc_portname;
+ nport->d_id = args->d_id;
+ nport->fc_port = nvmf_fc_port_lookup(args->port_handle);
+
+ (void)nvmf_fc_nport_set_state(nport, SPDK_NVMF_FC_OBJECT_CREATED);
+ TAILQ_INIT(&nport->rem_port_list);
+ nport->rport_count = 0;
+ TAILQ_INIT(&nport->fc_associations);
+ nport->assoc_count = 0;
+
+ /*
+ * Populate the nport address (as listening address) to the nvmf subsystems.
+ */
+ err = nvmf_fc_adm_add_rem_nport_listener(nport, true);
+
+ (void)nvmf_fc_port_add_nport(fc_port, nport);
+out:
+ if (err && nport) {
+ free(nport);
+ }
+
+ if (api_data->cb_func != NULL) {
+ (void)api_data->cb_func(args->port_handle, SPDK_FC_NPORT_CREATE, args->cb_ctx, err);
+ }
+
+ free(arg);
+}
+
+static void
+nvmf_fc_adm_delete_nport_cb(uint8_t port_handle, enum spdk_fc_event event_type,
+ void *cb_args, int spdk_err)
+{
+ ASSERT_SPDK_FC_MASTER_THREAD();
+ struct spdk_nvmf_fc_adm_nport_del_cb_data *cb_data = cb_args;
+ struct spdk_nvmf_fc_nport *nport = cb_data->nport;
+ spdk_nvmf_fc_callback cb_func = cb_data->fc_cb_func;
+ int err = 0;
+ uint16_t nport_hdl = 0;
+ char log_str[256];
+
+ /*
+ * Assert on any delete failure.
+ */
+ if (nport == NULL) {
+ SPDK_ERRLOG("Nport delete callback returned null nport");
+ DEV_VERIFY(!"nport is null.");
+ goto out;
+ }
+
+ nport_hdl = nport->nport_hdl;
+ if (0 != spdk_err) {
+ SPDK_ERRLOG("Nport delete callback returned error. FC Port: "
+ "%d, Nport: %d\n",
+ nport->port_hdl, nport->nport_hdl);
+ DEV_VERIFY(!"nport delete callback error.");
+ }
+
+ /*
+ * Free the nport if this is the last rport being deleted and
+ * execute the callback(s).
+ */
+ if (nvmf_fc_nport_has_no_rport(nport)) {
+ if (0 != nport->assoc_count) {
+ SPDK_ERRLOG("association count != 0\n");
+ DEV_VERIFY(!"association count != 0");
+ }
+
+ err = nvmf_fc_port_remove_nport(nport->fc_port, nport);
+ if (0 != err) {
+ SPDK_ERRLOG("Nport delete callback: Failed to remove "
+ "nport from nport list. FC Port:%d Nport:%d\n",
+ nport->port_hdl, nport->nport_hdl);
+ }
+ /* Free the nport */
+ free(nport);
+
+ if (cb_func != NULL) {
+ (void)cb_func(cb_data->port_handle, SPDK_FC_NPORT_DELETE, cb_data->fc_cb_ctx, spdk_err);
+ }
+ free(cb_data);
+ }
+out:
+ snprintf(log_str, sizeof(log_str),
+ "port:%d nport:%d delete cb exit, evt_type:%d rc:%d.\n",
+ port_handle, nport_hdl, event_type, spdk_err);
+
+ if (err != 0) {
+ SPDK_ERRLOG("%s", log_str);
+ } else {
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "%s", log_str);
+ }
+}
+
+/*
+ * Delete Nport.
+ */
+static void
+nvmf_fc_adm_evnt_nport_delete(void *arg)
+{
+ ASSERT_SPDK_FC_MASTER_THREAD();
+ struct spdk_nvmf_fc_adm_api_data *api_data = (struct spdk_nvmf_fc_adm_api_data *)arg;
+ struct spdk_nvmf_fc_nport_delete_args *args = (struct spdk_nvmf_fc_nport_delete_args *)
+ api_data->api_args;
+ struct spdk_nvmf_fc_nport *nport = NULL;
+ struct spdk_nvmf_fc_adm_nport_del_cb_data *cb_data = NULL;
+ struct spdk_nvmf_fc_remote_port_info *rport_iter = NULL;
+ int err = 0;
+ uint32_t rport_cnt = 0;
+ int rc = 0;
+
+ /*
+ * Make sure that the nport exists.
+ */
+ nport = nvmf_fc_nport_find(args->port_handle, args->nport_handle);
+ if (nport == NULL) {
+ SPDK_ERRLOG("Unable to find the SPDK FC nport %d for FC Port: %d.\n", args->nport_handle,
+ args->port_handle);
+ err = -EINVAL;
+ goto out;
+ }
+
+ /*
+ * Allocate memory for callback data.
+ */
+ cb_data = calloc(1, sizeof(struct spdk_nvmf_fc_adm_nport_del_cb_data));
+ if (NULL == cb_data) {
+ SPDK_ERRLOG("Failed to allocate memory for cb_data %d.\n", args->nport_handle);
+ err = -ENOMEM;
+ goto out;
+ }
+
+ cb_data->nport = nport;
+ cb_data->port_handle = args->port_handle;
+ cb_data->fc_cb_func = api_data->cb_func;
+ cb_data->fc_cb_ctx = args->cb_ctx;
+
+ /*
+ * Begin nport tear down
+ */
+ if (nport->nport_state == SPDK_NVMF_FC_OBJECT_CREATED) {
+ (void)nvmf_fc_nport_set_state(nport, SPDK_NVMF_FC_OBJECT_TO_BE_DELETED);
+ } else if (nport->nport_state == SPDK_NVMF_FC_OBJECT_TO_BE_DELETED) {
+ /*
+ * Deletion of this nport already in progress. Register callback
+ * and return.
+ */
+ /* TODO: Register callback in callback vector. For now, set the error and return. */
+ err = -ENODEV;
+ goto out;
+ } else {
+ /* nport partially created/deleted */
+ DEV_VERIFY(nport->nport_state == SPDK_NVMF_FC_OBJECT_ZOMBIE);
+ DEV_VERIFY(0 != "Nport in zombie state");
+ err = -ENODEV;
+ goto out;
+ }
+
+ /*
+ * Remove this nport from listening addresses across subsystems
+ */
+ rc = nvmf_fc_adm_add_rem_nport_listener(nport, false);
+
+ if (0 != rc) {
+ err = nvmf_fc_nport_set_state(nport, SPDK_NVMF_FC_OBJECT_ZOMBIE);
+ SPDK_ERRLOG("Unable to remove the listen addr in the subsystems for nport %d.\n",
+ nport->nport_hdl);
+ goto out;
+ }
+
+ /*
+ * Delete all the remote ports (if any) for the nport
+ */
+ /* TODO - Need to do this with a "first" and a "next" accessor function
+ * for completeness. Look at app-subsystem as examples.
+ */
+ if (nvmf_fc_nport_has_no_rport(nport)) {
+ /* No rports to delete. Complete the nport deletion. */
+ nvmf_fc_adm_delete_nport_cb(nport->port_hdl, SPDK_FC_NPORT_DELETE, cb_data, 0);
+ goto out;
+ }
+
+ TAILQ_FOREACH(rport_iter, &nport->rem_port_list, link) {
+ struct spdk_nvmf_fc_hw_i_t_delete_args *it_del_args = calloc(
+ 1, sizeof(struct spdk_nvmf_fc_hw_i_t_delete_args));
+
+ if (it_del_args == NULL) {
+ err = -ENOMEM;
+ SPDK_ERRLOG("SPDK_FC_IT_DELETE no mem to delete rport with rpi:%d s_id:%d.\n",
+ rport_iter->rpi, rport_iter->s_id);
+ DEV_VERIFY(!"SPDK_FC_IT_DELETE failed, cannot allocate memory");
+ goto out;
+ }
+
+ rport_cnt++;
+ it_del_args->port_handle = nport->port_hdl;
+ it_del_args->nport_handle = nport->nport_hdl;
+ it_del_args->cb_ctx = (void *)cb_data;
+ it_del_args->rpi = rport_iter->rpi;
+ it_del_args->s_id = rport_iter->s_id;
+
+ nvmf_fc_master_enqueue_event(SPDK_FC_IT_DELETE, (void *)it_del_args,
+ nvmf_fc_adm_delete_nport_cb);
+ }
+
+out:
+ /* On failure, execute the callback function now */
+ if ((err != 0) || (rc != 0)) {
+ SPDK_ERRLOG("NPort %d delete failed, error:%d, fc port:%d, "
+ "rport_cnt:%d rc:%d.\n",
+ args->nport_handle, err, args->port_handle,
+ rport_cnt, rc);
+ if (cb_data) {
+ free(cb_data);
+ }
+ if (api_data->cb_func != NULL) {
+ (void)api_data->cb_func(args->port_handle, SPDK_FC_NPORT_DELETE, args->cb_ctx, err);
+ }
+
+ } else {
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API,
+ "NPort %d delete done succesfully, fc port:%d. "
+ "rport_cnt:%d\n",
+ args->nport_handle, args->port_handle, rport_cnt);
+ }
+
+ free(arg);
+}
+
+/*
+ * Process an PRLI/IT add.
+ */
+static void
+nvmf_fc_adm_evnt_i_t_add(void *arg)
+{
+ ASSERT_SPDK_FC_MASTER_THREAD();
+ struct spdk_nvmf_fc_adm_api_data *api_data = (struct spdk_nvmf_fc_adm_api_data *)arg;
+ struct spdk_nvmf_fc_hw_i_t_add_args *args = (struct spdk_nvmf_fc_hw_i_t_add_args *)
+ api_data->api_args;
+ struct spdk_nvmf_fc_nport *nport = NULL;
+ struct spdk_nvmf_fc_remote_port_info *rport_iter = NULL;
+ struct spdk_nvmf_fc_remote_port_info *rport = NULL;
+ int err = 0;
+
+ /*
+ * Make sure the nport port exists.
+ */
+ nport = nvmf_fc_nport_find(args->port_handle, args->nport_handle);
+ if (nport == NULL) {
+ SPDK_ERRLOG("Unable to find the SPDK FC nport %d\n", args->nport_handle);
+ err = -EINVAL;
+ goto out;
+ }
+
+ /*
+ * Check for duplicate i_t_add.
+ */
+ TAILQ_FOREACH(rport_iter, &nport->rem_port_list, link) {
+ if ((rport_iter->s_id == args->s_id) && (rport_iter->rpi == args->rpi)) {
+ SPDK_ERRLOG("Duplicate rport found for FC nport %d: sid:%d rpi:%d\n",
+ args->nport_handle, rport_iter->s_id, rport_iter->rpi);
+ err = -EEXIST;
+ goto out;
+ }
+ }
+
+ /*
+ * Get the memory to instantiate the remote port
+ */
+ rport = calloc(1, sizeof(struct spdk_nvmf_fc_remote_port_info));
+ if (rport == NULL) {
+ SPDK_ERRLOG("Memory allocation for rem port failed.\n");
+ err = -ENOMEM;
+ goto out;
+ }
+
+ /*
+ * Initialize the contents for the rport
+ */
+ (void)nvmf_fc_rport_set_state(rport, SPDK_NVMF_FC_OBJECT_CREATED);
+ rport->s_id = args->s_id;
+ rport->rpi = args->rpi;
+ rport->fc_nodename = args->fc_nodename;
+ rport->fc_portname = args->fc_portname;
+
+ /*
+ * Add remote port to nport
+ */
+ if (nvmf_fc_nport_add_rem_port(nport, rport) != 0) {
+ DEV_VERIFY(!"Error while adding rport to list");
+ };
+
+ /*
+ * TODO: Do we validate the initiators service parameters?
+ */
+
+ /*
+ * Get the targets service parameters from the library
+ * to return back to the driver.
+ */
+ args->target_prli_info = nvmf_fc_get_prli_service_params();
+
+out:
+ if (api_data->cb_func != NULL) {
+ /*
+ * Passing pointer to the args struct as the first argument.
+ * The cb_func should handle this appropriately.
+ */
+ (void)api_data->cb_func(args->port_handle, SPDK_FC_IT_ADD, args->cb_ctx, err);
+ }
+
+ free(arg);
+
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API,
+ "IT add on nport %d done, rc = %d.\n",
+ args->nport_handle, err);
+}
+
+/**
+ * Process a IT delete.
+ */
+static void
+nvmf_fc_adm_evnt_i_t_delete(void *arg)
+{
+ ASSERT_SPDK_FC_MASTER_THREAD();
+ struct spdk_nvmf_fc_adm_api_data *api_data = (struct spdk_nvmf_fc_adm_api_data *)arg;
+ struct spdk_nvmf_fc_hw_i_t_delete_args *args = (struct spdk_nvmf_fc_hw_i_t_delete_args *)
+ api_data->api_args;
+ int rc = 0;
+ struct spdk_nvmf_fc_nport *nport = NULL;
+ struct spdk_nvmf_fc_adm_i_t_del_cb_data *cb_data = NULL;
+ struct spdk_nvmf_fc_remote_port_info *rport_iter = NULL;
+ struct spdk_nvmf_fc_remote_port_info *rport = NULL;
+ uint32_t num_rport = 0;
+ char log_str[256];
+
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "IT delete on nport:%d begin.\n", args->nport_handle);
+
+ /*
+ * Make sure the nport port exists. If it does not, error out.
+ */
+ nport = nvmf_fc_nport_find(args->port_handle, args->nport_handle);
+ if (nport == NULL) {
+ SPDK_ERRLOG("Unable to find the SPDK FC nport:%d\n", args->nport_handle);
+ rc = -EINVAL;
+ goto out;
+ }
+
+ /*
+ * Find this ITN / rport (remote port).
+ */
+ TAILQ_FOREACH(rport_iter, &nport->rem_port_list, link) {
+ num_rport++;
+ if ((rport_iter->s_id == args->s_id) &&
+ (rport_iter->rpi == args->rpi) &&
+ (rport_iter->rport_state == SPDK_NVMF_FC_OBJECT_CREATED)) {
+ rport = rport_iter;
+ break;
+ }
+ }
+
+ /*
+ * We should find either zero or exactly one rport.
+ *
+ * If we find zero rports, that means that a previous request has
+ * removed the rport by the time we reached here. In this case,
+ * simply return out.
+ */
+ if (rport == NULL) {
+ rc = -ENODEV;
+ goto out;
+ }
+
+ /*
+ * We have found exactly one rport. Allocate memory for callback data.
+ */
+ cb_data = calloc(1, sizeof(struct spdk_nvmf_fc_adm_i_t_del_cb_data));
+ if (NULL == cb_data) {
+ SPDK_ERRLOG("Failed to allocate memory for cb_data for nport:%d.\n", args->nport_handle);
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ cb_data->nport = nport;
+ cb_data->rport = rport;
+ cb_data->port_handle = args->port_handle;
+ cb_data->fc_cb_func = api_data->cb_func;
+ cb_data->fc_cb_ctx = args->cb_ctx;
+
+ /*
+ * Validate rport object state.
+ */
+ if (rport->rport_state == SPDK_NVMF_FC_OBJECT_CREATED) {
+ (void)nvmf_fc_rport_set_state(rport, SPDK_NVMF_FC_OBJECT_TO_BE_DELETED);
+ } else if (rport->rport_state == SPDK_NVMF_FC_OBJECT_TO_BE_DELETED) {
+ /*
+ * Deletion of this rport already in progress. Register callback
+ * and return.
+ */
+ /* TODO: Register callback in callback vector. For now, set the error and return. */
+ rc = -ENODEV;
+ goto out;
+ } else {
+ /* rport partially created/deleted */
+ DEV_VERIFY(rport->rport_state == SPDK_NVMF_FC_OBJECT_ZOMBIE);
+ DEV_VERIFY(!"Invalid rport_state");
+ rc = -ENODEV;
+ goto out;
+ }
+
+ /*
+ * We have successfully found a rport to delete. Call
+ * nvmf_fc_i_t_delete_assoc(), which will perform further
+ * IT-delete processing as well as free the cb_data.
+ */
+ nvmf_fc_adm_i_t_delete_assoc(nport, rport, nvmf_fc_adm_i_t_delete_cb,
+ (void *)cb_data);
+
+out:
+ if (rc != 0) {
+ /*
+ * We have entered here because either we encountered an
+ * error, or we did not find a rport to delete.
+ * As a result, we will not call the function
+ * nvmf_fc_i_t_delete_assoc() for further IT-delete
+ * processing. Therefore, execute the callback function now.
+ */
+ if (cb_data) {
+ free(cb_data);
+ }
+ if (api_data->cb_func != NULL) {
+ (void)api_data->cb_func(args->port_handle, SPDK_FC_IT_DELETE, args->cb_ctx, rc);
+ }
+ }
+
+ snprintf(log_str, sizeof(log_str),
+ "IT delete on nport:%d end. num_rport:%d rc = %d.\n",
+ args->nport_handle, num_rport, rc);
+
+ if (rc != 0) {
+ SPDK_ERRLOG("%s", log_str);
+ } else {
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "%s", log_str);
+ }
+
+ free(arg);
+}
+
+/*
+ * Process ABTS received
+ */
+static void
+nvmf_fc_adm_evnt_abts_recv(void *arg)
+{
+ ASSERT_SPDK_FC_MASTER_THREAD();
+ struct spdk_nvmf_fc_adm_api_data *api_data = (struct spdk_nvmf_fc_adm_api_data *)arg;
+ struct spdk_nvmf_fc_abts_args *args = (struct spdk_nvmf_fc_abts_args *)api_data->api_args;
+ struct spdk_nvmf_fc_nport *nport = NULL;
+ int err = 0;
+
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "FC ABTS received. RPI:%d, oxid:%d, rxid:%d\n", args->rpi,
+ args->oxid, args->rxid);
+
+ /*
+ * 1. Make sure the nport port exists.
+ */
+ nport = nvmf_fc_nport_find(args->port_handle, args->nport_handle);
+ if (nport == NULL) {
+ SPDK_ERRLOG("Unable to find the SPDK FC nport %d\n", args->nport_handle);
+ err = -EINVAL;
+ goto out;
+ }
+
+ /*
+ * 2. If the nport is in the process of being deleted, drop the ABTS.
+ */
+ if (nport->nport_state == SPDK_NVMF_FC_OBJECT_TO_BE_DELETED) {
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API,
+ "FC ABTS dropped because the nport is being deleted; RPI:%d, oxid:%d, rxid:%d\n",
+ args->rpi, args->oxid, args->rxid);
+ err = 0;
+ goto out;
+
+ }
+
+ /*
+ * 3. Pass the received ABTS-LS to the library for handling.
+ */
+ nvmf_fc_handle_abts_frame(nport, args->rpi, args->oxid, args->rxid);
+
+out:
+ if (api_data->cb_func != NULL) {
+ /*
+ * Passing pointer to the args struct as the first argument.
+ * The cb_func should handle this appropriately.
+ */
+ (void)api_data->cb_func(args->port_handle, SPDK_FC_ABTS_RECV, args, err);
+ } else {
+ /* No callback set, free the args */
+ free(args);
+ }
+
+ free(arg);
+}
+
+/*
+ * Callback function for hw port quiesce.
+ */
+static void
+nvmf_fc_adm_hw_port_quiesce_reset_cb(void *ctx, int err)
+{
+ ASSERT_SPDK_FC_MASTER_THREAD();
+ struct spdk_nvmf_fc_adm_hw_port_reset_ctx *reset_ctx =
+ (struct spdk_nvmf_fc_adm_hw_port_reset_ctx *)ctx;
+ struct spdk_nvmf_fc_hw_port_reset_args *args = reset_ctx->reset_args;
+ spdk_nvmf_fc_callback cb_func = reset_ctx->reset_cb_func;
+ struct spdk_nvmf_fc_queue_dump_info dump_info;
+ struct spdk_nvmf_fc_port *fc_port = NULL;
+ char *dump_buf = NULL;
+ uint32_t dump_buf_size = SPDK_FC_HW_DUMP_BUF_SIZE;
+
+ /*
+ * Free the callback context struct.
+ */
+ free(ctx);
+
+ if (err != 0) {
+ SPDK_ERRLOG("Port %d quiesce operation failed.\n", args->port_handle);
+ goto out;
+ }
+
+ if (args->dump_queues == false) {
+ /*
+ * Queues need not be dumped.
+ */
+ goto out;
+ }
+
+ SPDK_ERRLOG("Dumping queues for HW port %d\n", args->port_handle);
+
+ /*
+ * Get the fc port.
+ */
+ fc_port = nvmf_fc_port_lookup(args->port_handle);
+ if (fc_port == NULL) {
+ SPDK_ERRLOG("Unable to find the SPDK FC port %d\n", args->port_handle);
+ err = -EINVAL;
+ goto out;
+ }
+
+ /*
+ * Allocate memory for the dump buffer.
+ * This memory will be freed by FCT.
+ */
+ dump_buf = (char *)calloc(1, dump_buf_size);
+ if (dump_buf == NULL) {
+ err = -ENOMEM;
+ SPDK_ERRLOG("Memory allocation for dump buffer failed, SPDK FC port %d\n", args->port_handle);
+ goto out;
+ }
+ *args->dump_buf = (uint32_t *)dump_buf;
+ dump_info.buffer = dump_buf;
+ dump_info.offset = 0;
+
+ /*
+ * Add the dump reason to the top of the buffer.
+ */
+ nvmf_fc_dump_buf_print(&dump_info, "%s\n", args->reason);
+
+ /*
+ * Dump the hwqp.
+ */
+ nvmf_fc_dump_all_queues(&fc_port->ls_queue, fc_port->io_queues,
+ fc_port->num_io_queues, &dump_info);
+
+out:
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "HW port %d reset done, queues_dumped = %d, rc = %d.\n",
+ args->port_handle, args->dump_queues, err);
+
+ if (cb_func != NULL) {
+ (void)cb_func(args->port_handle, SPDK_FC_HW_PORT_RESET, args->cb_ctx, err);
+ }
+}
+
+/*
+ * HW port reset
+
+ */
+static void
+nvmf_fc_adm_evnt_hw_port_reset(void *arg)
+{
+ ASSERT_SPDK_FC_MASTER_THREAD();
+ struct spdk_nvmf_fc_adm_api_data *api_data = (struct spdk_nvmf_fc_adm_api_data *)arg;
+ struct spdk_nvmf_fc_hw_port_reset_args *args = (struct spdk_nvmf_fc_hw_port_reset_args *)
+ api_data->api_args;
+ struct spdk_nvmf_fc_port *fc_port = NULL;
+ struct spdk_nvmf_fc_adm_hw_port_reset_ctx *ctx = NULL;
+ int err = 0;
+
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "HW port %d dump\n", args->port_handle);
+
+ /*
+ * Make sure the physical port exists.
+ */
+ fc_port = nvmf_fc_port_lookup(args->port_handle);
+ if (fc_port == NULL) {
+ SPDK_ERRLOG("Unable to find the SPDK FC port %d\n", args->port_handle);
+ err = -EINVAL;
+ goto out;
+ }
+
+ /*
+ * Save the reset event args and the callback in a context struct.
+ */
+ ctx = calloc(1, sizeof(struct spdk_nvmf_fc_adm_hw_port_reset_ctx));
+
+ if (ctx == NULL) {
+ err = -ENOMEM;
+ SPDK_ERRLOG("Memory allocation for reset ctx failed, SPDK FC port %d\n", args->port_handle);
+ goto fail;
+ }
+
+ ctx->reset_args = arg;
+ ctx->reset_cb_func = api_data->cb_func;
+
+ /*
+ * Quiesce the hw port.
+ */
+ err = nvmf_fc_adm_hw_port_quiesce(fc_port, ctx, nvmf_fc_adm_hw_port_quiesce_reset_cb);
+ if (err != 0) {
+ goto fail;
+ }
+
+ /*
+ * Once the ports are successfully quiesced the reset processing
+ * will continue in the callback function: spdk_fc_port_quiesce_reset_cb
+ */
+ return;
+fail:
+ free(ctx);
+
+out:
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "HW port %d dump done, rc = %d.\n", args->port_handle,
+ err);
+
+ if (api_data->cb_func != NULL) {
+ (void)api_data->cb_func(args->port_handle, SPDK_FC_HW_PORT_RESET, args->cb_ctx, err);
+ }
+
+ free(arg);
+}
+
+/*
+ * Process a link break event on a HW port.
+ */
+static void
+nvmf_fc_adm_evnt_hw_port_link_break(void *arg)
+{
+ ASSERT_SPDK_FC_MASTER_THREAD();
+ struct spdk_nvmf_fc_adm_api_data *api_data = (struct spdk_nvmf_fc_adm_api_data *)arg;
+ struct spdk_nvmf_hw_port_link_break_args *args = (struct spdk_nvmf_hw_port_link_break_args *)
+ api_data->api_args;
+ struct spdk_nvmf_fc_port *fc_port = NULL;
+ int err = 0;
+ struct spdk_nvmf_fc_adm_port_link_break_cb_data *cb_data = NULL;
+ struct spdk_nvmf_fc_nport *nport = NULL;
+ uint32_t nport_deletes_sent = 0;
+ uint32_t nport_deletes_skipped = 0;
+ struct spdk_nvmf_fc_nport_delete_args *nport_del_args = NULL;
+ char log_str[256];
+
+ /*
+ * Get the fc port using the port handle.
+ */
+ fc_port = nvmf_fc_port_lookup(args->port_handle);
+ if (!fc_port) {
+ SPDK_ERRLOG("port link break: Unable to find the SPDK FC port %d\n",
+ args->port_handle);
+ err = -EINVAL;
+ goto out;
+ }
+
+ /*
+ * Set the port state to offline, if it is not already.
+ */
+ err = nvmf_fc_port_set_offline(fc_port);
+ if (err != 0) {
+ SPDK_ERRLOG("port link break: HW port %d already offline. rc = %d\n",
+ fc_port->port_hdl, err);
+ err = 0;
+ goto out;
+ }
+
+ /*
+ * Delete all the nports, if any.
+ */
+ if (!TAILQ_EMPTY(&fc_port->nport_list)) {
+ TAILQ_FOREACH(nport, &fc_port->nport_list, link) {
+ /* Skipped the nports that are not in CREATED state */
+ if (nport->nport_state != SPDK_NVMF_FC_OBJECT_CREATED) {
+ nport_deletes_skipped++;
+ continue;
+ }
+
+ /* Allocate memory for callback data. */
+ cb_data = calloc(1, sizeof(struct spdk_nvmf_fc_adm_port_link_break_cb_data));
+ if (NULL == cb_data) {
+ SPDK_ERRLOG("port link break: Failed to allocate memory for cb_data %d.\n",
+ args->port_handle);
+ err = -ENOMEM;
+ goto out;
+ }
+ cb_data->args = args;
+ cb_data->cb_func = api_data->cb_func;
+ nport_del_args = &cb_data->nport_del_args;
+ nport_del_args->port_handle = args->port_handle;
+ nport_del_args->nport_handle = nport->nport_hdl;
+ nport_del_args->cb_ctx = cb_data;
+
+ nvmf_fc_master_enqueue_event(SPDK_FC_NPORT_DELETE,
+ (void *)nport_del_args,
+ nvmf_fc_adm_hw_port_link_break_cb);
+
+ nport_deletes_sent++;
+ }
+ }
+
+ if (nport_deletes_sent == 0 && err == 0) {
+ /*
+ * Mark the hwqps as offline and unregister the pollers.
+ */
+ (void)nvmf_fc_adm_port_hwqp_offline_del_poller(fc_port);
+ }
+
+out:
+ snprintf(log_str, sizeof(log_str),
+ "port link break done: port:%d nport_deletes_sent:%d nport_deletes_skipped:%d rc:%d.\n",
+ args->port_handle, nport_deletes_sent, nport_deletes_skipped, err);
+
+ if (err != 0) {
+ SPDK_ERRLOG("%s", log_str);
+ } else {
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "%s", log_str);
+ }
+
+ if ((api_data->cb_func != NULL) && (nport_deletes_sent == 0)) {
+ /*
+ * No nport_deletes are sent, which would have eventually
+ * called the port_link_break callback. Therefore, call the
+ * port_link_break callback here.
+ */
+ (void)api_data->cb_func(args->port_handle, SPDK_FC_LINK_BREAK, args->cb_ctx, err);
+ }
+
+ free(arg);
+}
+
+static inline void
+nvmf_fc_adm_run_on_master_thread(spdk_msg_fn fn, void *args)
+{
+ if (nvmf_fc_get_master_thread()) {
+ spdk_thread_send_msg(nvmf_fc_get_master_thread(), fn, args);
+ }
+}
+
+/*
+ * Queue up an event in the SPDK masters event queue.
+ * Used by the FC driver to notify the SPDK master of FC related events.
+ */
+int
+nvmf_fc_master_enqueue_event(enum spdk_fc_event event_type, void *args,
+ spdk_nvmf_fc_callback cb_func)
+{
+ int err = 0;
+ struct spdk_nvmf_fc_adm_api_data *api_data = NULL;
+
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "Enqueue event %d.\n", event_type);
+
+ if (event_type >= SPDK_FC_EVENT_MAX) {
+ SPDK_ERRLOG("Invalid spdk_fc_event_t %d.\n", event_type);
+ err = -EINVAL;
+ goto done;
+ }
+
+ if (args == NULL) {
+ SPDK_ERRLOG("Null args for event %d.\n", event_type);
+ err = -EINVAL;
+ goto done;
+ }
+
+ api_data = calloc(1, sizeof(*api_data));
+
+ if (api_data == NULL) {
+ SPDK_ERRLOG("Failed to alloc api data for event %d.\n", event_type);
+ err = -ENOMEM;
+ goto done;
+ }
+
+ api_data->api_args = args;
+ api_data->cb_func = cb_func;
+
+ switch (event_type) {
+ case SPDK_FC_HW_PORT_INIT:
+ nvmf_fc_adm_run_on_master_thread(nvmf_fc_adm_evnt_hw_port_init,
+ (void *)api_data);
+ break;
+
+ case SPDK_FC_HW_PORT_ONLINE:
+ nvmf_fc_adm_run_on_master_thread(nvmf_fc_adm_evnt_hw_port_online,
+ (void *)api_data);
+ break;
+
+ case SPDK_FC_HW_PORT_OFFLINE:
+ nvmf_fc_adm_run_on_master_thread(nvmf_fc_adm_evnt_hw_port_offline,
+ (void *)api_data);
+ break;
+
+ case SPDK_FC_NPORT_CREATE:
+ nvmf_fc_adm_run_on_master_thread(nvmf_fc_adm_evnt_nport_create,
+ (void *)api_data);
+ break;
+
+ case SPDK_FC_NPORT_DELETE:
+ nvmf_fc_adm_run_on_master_thread(nvmf_fc_adm_evnt_nport_delete,
+ (void *)api_data);
+ break;
+
+ case SPDK_FC_IT_ADD:
+ nvmf_fc_adm_run_on_master_thread(nvmf_fc_adm_evnt_i_t_add,
+ (void *)api_data);
+ break;
+
+ case SPDK_FC_IT_DELETE:
+ nvmf_fc_adm_run_on_master_thread(nvmf_fc_adm_evnt_i_t_delete,
+ (void *)api_data);
+ break;
+
+ case SPDK_FC_ABTS_RECV:
+ nvmf_fc_adm_run_on_master_thread(nvmf_fc_adm_evnt_abts_recv,
+ (void *)api_data);
+ break;
+
+ case SPDK_FC_LINK_BREAK:
+ nvmf_fc_adm_run_on_master_thread(nvmf_fc_adm_evnt_hw_port_link_break,
+ (void *)api_data);
+ break;
+
+ case SPDK_FC_HW_PORT_RESET:
+ nvmf_fc_adm_run_on_master_thread(nvmf_fc_adm_evnt_hw_port_reset,
+ (void *)api_data);
+ break;
+
+ case SPDK_FC_UNRECOVERABLE_ERR:
+ default:
+ SPDK_ERRLOG("Invalid spdk_fc_event_t: %d\n", event_type);
+ err = -EINVAL;
+ break;
+ }
+
+done:
+
+ if (err == 0) {
+ SPDK_DEBUGLOG(SPDK_LOG_NVMF_FC_ADM_API, "Enqueue event %d done successfully\n", event_type);
+ } else {
+ SPDK_ERRLOG("Enqueue event %d failed, err = %d\n", event_type, err);
+ if (api_data) {
+ free(api_data);
+ }
+ }
+
+ return err;
+}
+
+SPDK_NVMF_TRANSPORT_REGISTER(fc, &spdk_nvmf_transport_fc);
+SPDK_LOG_REGISTER_COMPONENT("nvmf_fc_adm_api", SPDK_LOG_NVMF_FC_ADM_API);
+SPDK_LOG_REGISTER_COMPONENT("nvmf_fc", SPDK_LOG_NVMF_FC)
projects / ceph.git / blobdiff