3dfbf1fc50
When namespace resize is detected, NVMf target sends NS_ATTR_CHANGED async event to NVMf initiators connected to affected subsystem. Signed-off-by: Evgeniy Kochetov <evgeniik@mellanox.com> Signed-off-by: Sasha Kotchubievsky <sashakot@mellanox.com> Signed-off-by: Alexey Marchuk <alexeymar@mellanox.com> Change-Id: I64d42dfae7a0ccfbd1e26ded52b71b8cc2ca920f Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/468544 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Reviewed-by: Jim Harris <james.r.harris@intel.com>
476 lines
16 KiB
C
476 lines
16 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) Intel Corporation. All rights reserved.
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* Copyright (c) 2019 Mellanox Technologies LTD. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __NVMF_INTERNAL_H__
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#define __NVMF_INTERNAL_H__
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#include "spdk/stdinc.h"
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#include "spdk/likely.h"
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#include "spdk/nvmf.h"
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#include "spdk/nvmf_spec.h"
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#include "spdk/assert.h"
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#include "spdk/bdev.h"
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#include "spdk/queue.h"
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#include "spdk/util.h"
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#include "spdk/thread.h"
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#define SPDK_NVMF_MAX_SGL_ENTRIES 16
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/* The maximum number of buffers per request */
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#define NVMF_REQ_MAX_BUFFERS (SPDK_NVMF_MAX_SGL_ENTRIES * 2)
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/* AIO backend requires block size aligned data buffers,
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* extra 4KiB aligned data buffer should work for most devices.
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*/
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#define SHIFT_4KB 12u
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#define NVMF_DATA_BUFFER_ALIGNMENT (1u << SHIFT_4KB)
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#define NVMF_DATA_BUFFER_MASK (NVMF_DATA_BUFFER_ALIGNMENT - 1LL)
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enum spdk_nvmf_subsystem_state {
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SPDK_NVMF_SUBSYSTEM_INACTIVE = 0,
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SPDK_NVMF_SUBSYSTEM_ACTIVATING,
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SPDK_NVMF_SUBSYSTEM_ACTIVE,
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SPDK_NVMF_SUBSYSTEM_PAUSING,
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SPDK_NVMF_SUBSYSTEM_PAUSED,
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SPDK_NVMF_SUBSYSTEM_RESUMING,
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SPDK_NVMF_SUBSYSTEM_DEACTIVATING,
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};
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enum spdk_nvmf_qpair_state {
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SPDK_NVMF_QPAIR_UNINITIALIZED = 0,
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SPDK_NVMF_QPAIR_ACTIVE,
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SPDK_NVMF_QPAIR_DEACTIVATING,
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SPDK_NVMF_QPAIR_ERROR,
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};
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typedef void (*spdk_nvmf_state_change_done)(void *cb_arg, int status);
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struct spdk_nvmf_tgt {
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char name[NVMF_TGT_NAME_MAX_LENGTH];
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uint64_t discovery_genctr;
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uint32_t max_subsystems;
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/* Array of subsystem pointers of size max_subsystems indexed by sid */
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struct spdk_nvmf_subsystem **subsystems;
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TAILQ_HEAD(, spdk_nvmf_transport) transports;
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spdk_nvmf_tgt_destroy_done_fn *destroy_cb_fn;
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void *destroy_cb_arg;
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TAILQ_ENTRY(spdk_nvmf_tgt) link;
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};
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struct spdk_nvmf_host {
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char nqn[SPDK_NVMF_NQN_MAX_LEN + 1];
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TAILQ_ENTRY(spdk_nvmf_host) link;
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};
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struct spdk_nvmf_listener {
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struct spdk_nvme_transport_id trid;
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struct spdk_nvmf_transport *transport;
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TAILQ_ENTRY(spdk_nvmf_listener) link;
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};
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struct spdk_nvmf_transport_pg_cache_buf {
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STAILQ_ENTRY(spdk_nvmf_transport_pg_cache_buf) link;
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};
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struct spdk_nvmf_transport_poll_group {
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struct spdk_nvmf_transport *transport;
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/* Requests that are waiting to obtain a data buffer */
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STAILQ_HEAD(, spdk_nvmf_request) pending_buf_queue;
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STAILQ_HEAD(, spdk_nvmf_transport_pg_cache_buf) buf_cache;
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uint32_t buf_cache_count;
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uint32_t buf_cache_size;
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struct spdk_nvmf_poll_group *group;
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TAILQ_ENTRY(spdk_nvmf_transport_poll_group) link;
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};
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/* Maximum number of registrants supported per namespace */
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#define SPDK_NVMF_MAX_NUM_REGISTRANTS 16
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struct spdk_nvmf_registrant_info {
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uint64_t rkey;
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char host_uuid[SPDK_UUID_STRING_LEN];
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};
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struct spdk_nvmf_reservation_info {
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bool ptpl_activated;
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enum spdk_nvme_reservation_type rtype;
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uint64_t crkey;
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char bdev_uuid[SPDK_UUID_STRING_LEN];
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char holder_uuid[SPDK_UUID_STRING_LEN];
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uint32_t num_regs;
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struct spdk_nvmf_registrant_info registrants[SPDK_NVMF_MAX_NUM_REGISTRANTS];
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};
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struct spdk_nvmf_subsystem_pg_ns_info {
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struct spdk_io_channel *channel;
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struct spdk_uuid uuid;
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/* current reservation key, no reservation if the value is 0 */
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uint64_t crkey;
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/* reservation type */
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enum spdk_nvme_reservation_type rtype;
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/* Host ID which holds the reservation */
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struct spdk_uuid holder_id;
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/* Host ID for the registrants with the namespace */
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struct spdk_uuid reg_hostid[SPDK_NVMF_MAX_NUM_REGISTRANTS];
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uint64_t num_blocks;
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};
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typedef void(*spdk_nvmf_poll_group_mod_done)(void *cb_arg, int status);
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struct spdk_nvmf_subsystem_poll_group {
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/* Array of namespace information for each namespace indexed by nsid - 1 */
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struct spdk_nvmf_subsystem_pg_ns_info *ns_info;
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uint32_t num_ns;
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uint64_t io_outstanding;
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spdk_nvmf_poll_group_mod_done cb_fn;
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void *cb_arg;
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enum spdk_nvmf_subsystem_state state;
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TAILQ_HEAD(, spdk_nvmf_request) queued;
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};
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struct spdk_nvmf_poll_group {
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struct spdk_thread *thread;
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struct spdk_poller *poller;
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TAILQ_HEAD(, spdk_nvmf_transport_poll_group) tgroups;
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/* Array of poll groups indexed by subsystem id (sid) */
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struct spdk_nvmf_subsystem_poll_group *sgroups;
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uint32_t num_sgroups;
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/* All of the queue pairs that belong to this poll group */
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TAILQ_HEAD(, spdk_nvmf_qpair) qpairs;
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/* Statistics */
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struct spdk_nvmf_poll_group_stat stat;
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};
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typedef enum _spdk_nvmf_request_exec_status {
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SPDK_NVMF_REQUEST_EXEC_STATUS_COMPLETE,
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SPDK_NVMF_REQUEST_EXEC_STATUS_ASYNCHRONOUS,
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} spdk_nvmf_request_exec_status;
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union nvmf_h2c_msg {
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struct spdk_nvmf_capsule_cmd nvmf_cmd;
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struct spdk_nvme_cmd nvme_cmd;
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struct spdk_nvmf_fabric_prop_set_cmd prop_set_cmd;
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struct spdk_nvmf_fabric_prop_get_cmd prop_get_cmd;
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struct spdk_nvmf_fabric_connect_cmd connect_cmd;
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};
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SPDK_STATIC_ASSERT(sizeof(union nvmf_h2c_msg) == 64, "Incorrect size");
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union nvmf_c2h_msg {
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struct spdk_nvme_cpl nvme_cpl;
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struct spdk_nvmf_fabric_prop_get_rsp prop_get_rsp;
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struct spdk_nvmf_fabric_connect_rsp connect_rsp;
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};
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SPDK_STATIC_ASSERT(sizeof(union nvmf_c2h_msg) == 16, "Incorrect size");
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struct spdk_nvmf_request {
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struct spdk_nvmf_qpair *qpair;
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uint32_t length;
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enum spdk_nvme_data_transfer xfer;
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void *data;
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union nvmf_h2c_msg *cmd;
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union nvmf_c2h_msg *rsp;
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void *buffers[NVMF_REQ_MAX_BUFFERS];
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struct iovec iov[NVMF_REQ_MAX_BUFFERS];
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uint32_t iovcnt;
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bool data_from_pool;
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struct spdk_bdev_io_wait_entry bdev_io_wait;
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STAILQ_ENTRY(spdk_nvmf_request) buf_link;
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TAILQ_ENTRY(spdk_nvmf_request) link;
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};
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struct spdk_nvmf_registrant {
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TAILQ_ENTRY(spdk_nvmf_registrant) link;
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struct spdk_uuid hostid;
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/* Registration key */
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uint64_t rkey;
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};
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struct spdk_nvmf_ns {
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uint32_t nsid;
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struct spdk_nvmf_subsystem *subsystem;
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struct spdk_bdev *bdev;
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struct spdk_bdev_desc *desc;
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struct spdk_nvmf_ns_opts opts;
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/* reservation notificaton mask */
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uint32_t mask;
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/* generation code */
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uint32_t gen;
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/* registrants head */
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TAILQ_HEAD(, spdk_nvmf_registrant) registrants;
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/* current reservation key */
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uint64_t crkey;
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/* reservation type */
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enum spdk_nvme_reservation_type rtype;
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/* current reservation holder, only valid if reservation type can only have one holder */
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struct spdk_nvmf_registrant *holder;
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/* Persist Through Power Loss file which contains the persistent reservation */
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char *ptpl_file;
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/* Persist Through Power Loss feature is enabled */
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bool ptpl_activated;
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};
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struct spdk_nvmf_qpair {
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enum spdk_nvmf_qpair_state state;
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spdk_nvmf_state_change_done state_cb;
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void *state_cb_arg;
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struct spdk_nvmf_transport *transport;
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struct spdk_nvmf_ctrlr *ctrlr;
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struct spdk_nvmf_poll_group *group;
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uint16_t qid;
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uint16_t sq_head;
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uint16_t sq_head_max;
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TAILQ_HEAD(, spdk_nvmf_request) outstanding;
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TAILQ_ENTRY(spdk_nvmf_qpair) link;
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};
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struct spdk_nvmf_ctrlr_feat {
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union spdk_nvme_feat_arbitration arbitration;
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union spdk_nvme_feat_power_management power_management;
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union spdk_nvme_feat_error_recovery error_recovery;
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union spdk_nvme_feat_volatile_write_cache volatile_write_cache;
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union spdk_nvme_feat_number_of_queues number_of_queues;
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union spdk_nvme_feat_write_atomicity write_atomicity;
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union spdk_nvme_feat_async_event_configuration async_event_configuration;
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union spdk_nvme_feat_keep_alive_timer keep_alive_timer;
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};
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/*
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* NVMf reservation notificaton log page.
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*/
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struct spdk_nvmf_reservation_log {
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struct spdk_nvme_reservation_notification_log log;
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TAILQ_ENTRY(spdk_nvmf_reservation_log) link;
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struct spdk_nvmf_ctrlr *ctrlr;
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};
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/*
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* This structure represents an NVMe-oF controller,
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* which is like a "session" in networking terms.
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*/
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struct spdk_nvmf_ctrlr {
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uint16_t cntlid;
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char hostnqn[SPDK_NVMF_NQN_MAX_LEN + 1];
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struct spdk_nvmf_subsystem *subsys;
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struct {
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union spdk_nvme_cap_register cap;
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union spdk_nvme_vs_register vs;
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union spdk_nvme_cc_register cc;
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union spdk_nvme_csts_register csts;
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} vcprop; /* virtual controller properties */
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struct spdk_nvmf_ctrlr_feat feat;
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struct spdk_nvmf_qpair *admin_qpair;
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struct spdk_thread *thread;
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struct spdk_bit_array *qpair_mask;
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struct spdk_nvmf_request *aer_req;
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union spdk_nvme_async_event_completion notice_event;
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union spdk_nvme_async_event_completion reservation_event;
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struct spdk_uuid hostid;
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uint16_t changed_ns_list_count;
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struct spdk_nvme_ns_list changed_ns_list;
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uint64_t log_page_count;
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uint8_t num_avail_log_pages;
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TAILQ_HEAD(log_page_head, spdk_nvmf_reservation_log) log_head;
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/* Time to trigger keep-alive--poller_time = now_tick + period */
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uint64_t last_keep_alive_tick;
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struct spdk_poller *keep_alive_poller;
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bool dif_insert_or_strip;
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TAILQ_ENTRY(spdk_nvmf_ctrlr) link;
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};
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struct spdk_nvmf_subsystem {
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struct spdk_thread *thread;
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uint32_t id;
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enum spdk_nvmf_subsystem_state state;
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char subnqn[SPDK_NVMF_NQN_MAX_LEN + 1];
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enum spdk_nvmf_subtype subtype;
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uint16_t next_cntlid;
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bool allow_any_host;
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struct spdk_nvmf_tgt *tgt;
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char sn[SPDK_NVME_CTRLR_SN_LEN + 1];
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char mn[SPDK_NVME_CTRLR_MN_LEN + 1];
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/* Array of pointers to namespaces of size max_nsid indexed by nsid - 1 */
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struct spdk_nvmf_ns **ns;
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uint32_t max_nsid;
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/* This is the maximum allowed nsid to a subsystem */
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uint32_t max_allowed_nsid;
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TAILQ_HEAD(, spdk_nvmf_ctrlr) ctrlrs;
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TAILQ_HEAD(, spdk_nvmf_host) hosts;
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TAILQ_HEAD(, spdk_nvmf_listener) listeners;
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TAILQ_ENTRY(spdk_nvmf_subsystem) entries;
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};
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struct spdk_nvmf_transport *spdk_nvmf_tgt_get_transport(struct spdk_nvmf_tgt *tgt,
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enum spdk_nvme_transport_type);
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int spdk_nvmf_poll_group_add_transport(struct spdk_nvmf_poll_group *group,
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struct spdk_nvmf_transport *transport);
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int spdk_nvmf_poll_group_update_subsystem(struct spdk_nvmf_poll_group *group,
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struct spdk_nvmf_subsystem *subsystem);
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int spdk_nvmf_poll_group_add_subsystem(struct spdk_nvmf_poll_group *group,
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struct spdk_nvmf_subsystem *subsystem,
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spdk_nvmf_poll_group_mod_done cb_fn, void *cb_arg);
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void spdk_nvmf_poll_group_remove_subsystem(struct spdk_nvmf_poll_group *group,
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struct spdk_nvmf_subsystem *subsystem, spdk_nvmf_poll_group_mod_done cb_fn, void *cb_arg);
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void spdk_nvmf_poll_group_pause_subsystem(struct spdk_nvmf_poll_group *group,
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struct spdk_nvmf_subsystem *subsystem, spdk_nvmf_poll_group_mod_done cb_fn, void *cb_arg);
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void spdk_nvmf_poll_group_resume_subsystem(struct spdk_nvmf_poll_group *group,
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struct spdk_nvmf_subsystem *subsystem, spdk_nvmf_poll_group_mod_done cb_fn, void *cb_arg);
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void spdk_nvmf_request_exec(struct spdk_nvmf_request *req);
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int spdk_nvmf_request_free(struct spdk_nvmf_request *req);
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int spdk_nvmf_request_complete(struct spdk_nvmf_request *req);
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void spdk_nvmf_request_free_buffers(struct spdk_nvmf_request *req,
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struct spdk_nvmf_transport_poll_group *group,
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struct spdk_nvmf_transport *transport);
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int spdk_nvmf_request_get_buffers(struct spdk_nvmf_request *req,
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struct spdk_nvmf_transport_poll_group *group,
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struct spdk_nvmf_transport *transport,
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uint32_t length);
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int spdk_nvmf_request_get_buffers_multi(struct spdk_nvmf_request *req,
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struct spdk_nvmf_transport_poll_group *group,
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struct spdk_nvmf_transport *transport,
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uint32_t *lengths, uint32_t num_lengths);
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bool spdk_nvmf_request_get_dif_ctx(struct spdk_nvmf_request *req, struct spdk_dif_ctx *dif_ctx);
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void spdk_nvmf_get_discovery_log_page(struct spdk_nvmf_tgt *tgt, const char *hostnqn,
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struct iovec *iov,
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uint32_t iovcnt, uint64_t offset, uint32_t length);
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void spdk_nvmf_ctrlr_destruct(struct spdk_nvmf_ctrlr *ctrlr);
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int spdk_nvmf_ctrlr_process_fabrics_cmd(struct spdk_nvmf_request *req);
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int spdk_nvmf_ctrlr_process_admin_cmd(struct spdk_nvmf_request *req);
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int spdk_nvmf_ctrlr_process_io_cmd(struct spdk_nvmf_request *req);
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bool spdk_nvmf_ctrlr_dsm_supported(struct spdk_nvmf_ctrlr *ctrlr);
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bool spdk_nvmf_ctrlr_write_zeroes_supported(struct spdk_nvmf_ctrlr *ctrlr);
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void spdk_nvmf_ctrlr_ns_changed(struct spdk_nvmf_ctrlr *ctrlr, uint32_t nsid);
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void spdk_nvmf_bdev_ctrlr_identify_ns(struct spdk_nvmf_ns *ns, struct spdk_nvme_ns_data *nsdata,
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bool dif_insert_or_strip);
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int spdk_nvmf_bdev_ctrlr_read_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
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struct spdk_io_channel *ch, struct spdk_nvmf_request *req);
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int spdk_nvmf_bdev_ctrlr_write_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
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struct spdk_io_channel *ch, struct spdk_nvmf_request *req);
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int spdk_nvmf_bdev_ctrlr_write_zeroes_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
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struct spdk_io_channel *ch, struct spdk_nvmf_request *req);
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int spdk_nvmf_bdev_ctrlr_flush_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
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struct spdk_io_channel *ch, struct spdk_nvmf_request *req);
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int spdk_nvmf_bdev_ctrlr_dsm_cmd(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
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struct spdk_io_channel *ch, struct spdk_nvmf_request *req);
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int spdk_nvmf_bdev_ctrlr_nvme_passthru_io(struct spdk_bdev *bdev, struct spdk_bdev_desc *desc,
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struct spdk_io_channel *ch, struct spdk_nvmf_request *req);
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bool spdk_nvmf_bdev_ctrlr_get_dif_ctx(struct spdk_bdev *bdev, struct spdk_nvme_cmd *cmd,
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struct spdk_dif_ctx *dif_ctx);
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int spdk_nvmf_subsystem_add_ctrlr(struct spdk_nvmf_subsystem *subsystem,
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struct spdk_nvmf_ctrlr *ctrlr);
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void spdk_nvmf_subsystem_remove_ctrlr(struct spdk_nvmf_subsystem *subsystem,
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struct spdk_nvmf_ctrlr *ctrlr);
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struct spdk_nvmf_ctrlr *spdk_nvmf_subsystem_get_ctrlr(struct spdk_nvmf_subsystem *subsystem,
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uint16_t cntlid);
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int spdk_nvmf_ctrlr_async_event_ns_notice(struct spdk_nvmf_ctrlr *ctrlr);
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void spdk_nvmf_ctrlr_async_event_reservation_notification(struct spdk_nvmf_ctrlr *ctrlr);
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void spdk_nvmf_ns_reservation_request(void *ctx);
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void spdk_nvmf_ctrlr_reservation_notice_log(struct spdk_nvmf_ctrlr *ctrlr,
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struct spdk_nvmf_ns *ns,
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enum spdk_nvme_reservation_notification_log_page_type type);
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/*
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* Abort aer is sent on a per controller basis and sends a completion for the aer to the host.
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* This function should be called when attempting to recover in error paths when it is OK for
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* the host to send a subsequent AER.
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*/
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void spdk_nvmf_ctrlr_abort_aer(struct spdk_nvmf_ctrlr *ctrlr);
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/*
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* Free aer simply frees the rdma resources for the aer without informing the host.
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* This function should be called when deleting a qpair when one wants to make sure
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* the qpair is completely empty before freeing the request. The reason we free the
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* AER without sending a completion is to prevent the host from sending another AER.
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*/
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void spdk_nvmf_qpair_free_aer(struct spdk_nvmf_qpair *qpair);
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static inline struct spdk_nvmf_ns *
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_spdk_nvmf_subsystem_get_ns(struct spdk_nvmf_subsystem *subsystem, uint32_t nsid)
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{
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/* NOTE: This implicitly also checks for 0, since 0 - 1 wraps around to UINT32_MAX. */
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if (spdk_unlikely(nsid - 1 >= subsystem->max_nsid)) {
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return NULL;
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}
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return subsystem->ns[nsid - 1];
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}
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static inline bool
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spdk_nvmf_qpair_is_admin_queue(struct spdk_nvmf_qpair *qpair)
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{
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return qpair->qid == 0;
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}
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#endif /* __NVMF_INTERNAL_H__ */
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