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nvmf/vfio-user: rename controller migration data structures

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No logic code changes, we will define a nvmf controller migration
data structure in public header file, this is a preparation patch.

Change-Id: I0a98581b320ac9b12b7e4bf838222c5075168e64
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11493
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Dong Yi <dongx.yi@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This commit is contained in:
Changpeng Liu 2022-02-09 20:54:28 +08:00
parent 8951c15759
commit 2049e54926
1 changed files with 58 additions and 72 deletions
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124
lib/nvmf/vfio_user.c
View File

@ -115,14 +115,14 @@ SPDK_STATIC_ASSERT(sizeof(struct nvme_migr_cq_state) == 0x20, "Incorrect size");
/* The device state is in VFIO MIGRATION BAR(9) region, keep the device state page aligned.
*
* NVMe device migration region is defined as below:
* ----------------------------------------------------------------------
* | nvme_migr_device_state | private controller data | queue pairs | BARs |
* ----------------------------------------------------------------------
* -------------------------------------------------------------------------
* | vfio_user_nvme_migr_header | nvmf controller data | queue pairs | BARs |
* -------------------------------------------------------------------------
*
* Keep nvme_migr_device_state as a fixed 0x1000 length, all new added fields
* Keep vfio_user_nvme_migr_header as a fixed 0x1000 length, all new added fields
* can use the reserved space at the end of the data structure.
*/
struct nvme_migr_device_state {
struct vfio_user_nvme_migr_header {
/* Magic value to validate migration data */
uint32_t magic;
/* Version to check the data is same from source to destination */
@ -150,32 +150,33 @@ struct nvme_migr_device_state {
uint32_t num_io_queues;
uint32_t reserved1;
/* TODO: this part will be moved to common nvmf controller data */
uint16_t reserved2[3];
uint16_t nr_aers;
uint16_t aer_cids[NVMF_MIGR_MAX_PENDING_AERS];
/* Controller private data offset and length if exist, starting at
/* NVMf controller data offset and length if exist, starting at
* the beginning of this data structure.
*/
uint64_t private_data_offset;
uint64_t private_data_len;
uint64_t nvmf_data_offset;
uint64_t nvmf_data_len;
/* Reserved memory space for new added fields, the
* field is always at the end of this data structure.
*/
uint8_t unused[3356];
};
SPDK_STATIC_ASSERT(sizeof(struct nvme_migr_device_state) == 0x1000, "Incorrect size");
SPDK_STATIC_ASSERT(sizeof(struct vfio_user_nvme_migr_header) == 0x1000, "Incorrect size");
struct vfio_user_nvme_migr_qp {
struct nvme_migr_sq_state sq;
struct nvme_migr_cq_state cq;
};
/* NVMe state definition used temporarily to load/restore from/to NVMe migration BAR region */
/* NVMe state definition used to load/restore from/to NVMe migration BAR region */
struct vfio_user_nvme_migr_state {
struct nvme_migr_device_state ctrlr_data;
struct nvmf_ctrlr_migr_data private_data;
struct vfio_user_nvme_migr_header ctrlr_header;
struct nvmf_ctrlr_migr_data nvmf_data;
struct vfio_user_nvme_migr_qp qps[NVMF_VFIO_USER_MAX_QPAIRS_PER_CTRLR];
uint8_t bar0[NVME_REG_BAR0_SIZE];
uint8_t cfg[NVME_REG_CFG_SIZE];
@ -493,25 +494,10 @@ cq_is_full(struct nvmf_vfio_user_ctrlr *ctrlr, struct nvmf_vfio_user_cq *cq)
return qindex == *cq_dbl_headp(ctrlr, cq);
}
/* TODO: wrapper to data structure */
static inline size_t
vfio_user_migr_data_len(void)
{
size_t len = 0;
len = NVMF_VFIO_USER_MAX_QPAIRS_PER_CTRLR * (sizeof(struct nvme_migr_sq_state) + sizeof(
struct nvme_migr_cq_state));
len += sizeof(struct nvme_migr_device_state);
len += sizeof(struct nvmf_ctrlr_migr_data);
len += NVME_REG_BAR0_SIZE;
len += NVME_REG_CFG_SIZE;
/* BAR4 */
len += NVME_BAR4_SIZE;
/* BAR5 */
len += NVME_BAR5_SIZE;
return SPDK_ALIGN_CEIL(len, PAGE_SIZE);
return SPDK_ALIGN_CEIL(sizeof(struct vfio_user_nvme_migr_state), PAGE_SIZE);
}
static int
@ -2353,7 +2339,7 @@ vfio_user_ctrlr_dump_migr_data(const char *name, struct vfio_user_nvme_migr_stat
SPDK_NOTICELOG("ASQ 0x%"PRIx64"\n", regs->asq);
SPDK_NOTICELOG("ACQ 0x%"PRIx64"\n", regs->acq);
SPDK_NOTICELOG("Number of IO Queues %u\n", migr_data->ctrlr_data.num_io_queues);
SPDK_NOTICELOG("Number of IO Queues %u\n", migr_data->ctrlr_header.num_io_queues);
for (i = 0; i < NVMF_VFIO_USER_MAX_QPAIRS_PER_CTRLR; i++) {
sq = &migr_data->qps[i].sq;
cq = &migr_data->qps[i].cq;
@ -2381,29 +2367,29 @@ vfio_user_migr_stream_to_data(struct nvmf_vfio_user_endpoint *endpoint,
{
void *data_ptr = endpoint->migr_data;
/* Load nvme_migr_device_state first */
memcpy(&migr_state->ctrlr_data, data_ptr, sizeof(struct nvme_migr_device_state));
/* Load vfio_user_nvme_migr_header first */
memcpy(&migr_state->ctrlr_header, data_ptr, sizeof(struct vfio_user_nvme_migr_header));
/* TODO: version check */
if (migr_state->ctrlr_data.magic != VFIO_USER_NVME_MIGR_MAGIC) {
SPDK_ERRLOG("%s: bad magic number %x\n", endpoint_id(endpoint), migr_state->ctrlr_data.magic);
if (migr_state->ctrlr_header.magic != VFIO_USER_NVME_MIGR_MAGIC) {
SPDK_ERRLOG("%s: bad magic number %x\n", endpoint_id(endpoint), migr_state->ctrlr_header.magic);
return -EINVAL;
}
/* Load private controller data */
data_ptr = endpoint->migr_data + migr_state->ctrlr_data.private_data_offset;
memcpy(&migr_state->private_data, data_ptr, migr_state->ctrlr_data.private_data_len);
/* Load nvmf controller data */
data_ptr = endpoint->migr_data + migr_state->ctrlr_header.nvmf_data_offset;
memcpy(&migr_state->nvmf_data, data_ptr, migr_state->ctrlr_header.nvmf_data_len);
/* Load queue pairs */
data_ptr = endpoint->migr_data + migr_state->ctrlr_data.qp_offset;
memcpy(&migr_state->qps, data_ptr, migr_state->ctrlr_data.qp_len);
data_ptr = endpoint->migr_data + migr_state->ctrlr_header.qp_offset;
memcpy(&migr_state->qps, data_ptr, migr_state->ctrlr_header.qp_len);
/* Load BAR0 */
data_ptr = endpoint->migr_data + migr_state->ctrlr_data.bar_offset[VFU_PCI_DEV_BAR0_REGION_IDX];
memcpy(&migr_state->bar0, data_ptr, migr_state->ctrlr_data.bar_len[VFU_PCI_DEV_BAR0_REGION_IDX]);
data_ptr = endpoint->migr_data + migr_state->ctrlr_header.bar_offset[VFU_PCI_DEV_BAR0_REGION_IDX];
memcpy(&migr_state->bar0, data_ptr, migr_state->ctrlr_header.bar_len[VFU_PCI_DEV_BAR0_REGION_IDX]);
/* Load CFG */
data_ptr = endpoint->migr_data + migr_state->ctrlr_data.bar_offset[VFU_PCI_DEV_CFG_REGION_IDX];
memcpy(&migr_state->cfg, data_ptr, migr_state->ctrlr_data.bar_len[VFU_PCI_DEV_CFG_REGION_IDX]);
data_ptr = endpoint->migr_data + migr_state->ctrlr_header.bar_offset[VFU_PCI_DEV_CFG_REGION_IDX];
memcpy(&migr_state->cfg, data_ptr, migr_state->ctrlr_header.bar_len[VFU_PCI_DEV_CFG_REGION_IDX]);
return 0;
}
@ -2430,16 +2416,16 @@ vfio_user_migr_ctrlr_save_data(struct nvmf_vfio_user_ctrlr *vu_ctrlr)
*/
/* save magic number */
migr_state.ctrlr_data.magic = VFIO_USER_NVME_MIGR_MAGIC;
migr_state.ctrlr_header.magic = VFIO_USER_NVME_MIGR_MAGIC;
/* save controller data */
num_aers = nvmf_ctrlr_save_aers(ctrlr, migr_state.ctrlr_data.aer_cids,
num_aers = nvmf_ctrlr_save_aers(ctrlr, migr_state.ctrlr_header.aer_cids,
256);
assert(num_aers >= 0);
migr_state.ctrlr_data.nr_aers = num_aers;
migr_state.ctrlr_header.nr_aers = num_aers;
/* save controller private data */
nvmf_ctrlr_save_migr_data(ctrlr, (struct nvmf_ctrlr_migr_data *)&migr_state.private_data);
/* save nvmf controller data */
nvmf_ctrlr_save_migr_data(ctrlr, (struct nvmf_ctrlr_migr_data *)&migr_state.nvmf_data);
/* save connected queue pairs */
TAILQ_FOREACH(sq, &vu_ctrlr->connected_sqs, tailq) {
@ -2465,7 +2451,7 @@ vfio_user_migr_ctrlr_save_data(struct nvmf_vfio_user_ctrlr *vu_ctrlr)
}
assert(i > 0);
migr_state.ctrlr_data.num_io_queues = i - 1;
migr_state.ctrlr_header.num_io_queues = i - 1;
regs = (struct spdk_nvme_registers *)&migr_state.bar0;
/* Save mandarory registers to bar0 */
@ -2486,37 +2472,37 @@ vfio_user_migr_ctrlr_save_data(struct nvmf_vfio_user_ctrlr *vu_ctrlr)
/* Save all data to device migration region */
data_ptr = endpoint->migr_data;
/* Copy private controller data */
data_offset = sizeof(struct nvme_migr_device_state);
/* Copy nvmf controller data */
data_offset = sizeof(struct vfio_user_nvme_migr_header);
data_ptr += data_offset;
migr_state.ctrlr_data.private_data_offset = data_offset;
migr_state.ctrlr_data.private_data_len = sizeof(struct nvmf_ctrlr_migr_data);
memcpy(data_ptr, &migr_state.private_data, sizeof(struct nvmf_ctrlr_migr_data));
migr_state.ctrlr_header.nvmf_data_offset = data_offset;
migr_state.ctrlr_header.nvmf_data_len = sizeof(struct nvmf_ctrlr_migr_data);
memcpy(data_ptr, &migr_state.nvmf_data, sizeof(struct nvmf_ctrlr_migr_data));
/* Copy queue pairs */
data_offset += sizeof(struct nvmf_ctrlr_migr_data);
data_ptr += sizeof(struct nvmf_ctrlr_migr_data);
migr_state.ctrlr_data.qp_offset = data_offset;
migr_state.ctrlr_data.qp_len = i * (sizeof(struct nvme_migr_sq_state) + sizeof(
migr_state.ctrlr_header.qp_offset = data_offset;
migr_state.ctrlr_header.qp_len = i * (sizeof(struct nvme_migr_sq_state) + sizeof(
struct nvme_migr_cq_state));
memcpy(data_ptr, &migr_state.qps, migr_state.ctrlr_data.qp_len);
memcpy(data_ptr, &migr_state.qps, migr_state.ctrlr_header.qp_len);
/* Copy BAR0 */
data_offset += migr_state.ctrlr_data.qp_len;
data_ptr += migr_state.ctrlr_data.qp_len;
migr_state.ctrlr_data.bar_offset[VFU_PCI_DEV_BAR0_REGION_IDX] = data_offset;
migr_state.ctrlr_data.bar_len[VFU_PCI_DEV_BAR0_REGION_IDX] = NVME_REG_BAR0_SIZE;
data_offset += migr_state.ctrlr_header.qp_len;
data_ptr += migr_state.ctrlr_header.qp_len;
migr_state.ctrlr_header.bar_offset[VFU_PCI_DEV_BAR0_REGION_IDX] = data_offset;
migr_state.ctrlr_header.bar_len[VFU_PCI_DEV_BAR0_REGION_IDX] = NVME_REG_BAR0_SIZE;
memcpy(data_ptr, &migr_state.bar0, NVME_REG_BAR0_SIZE);
/* Copy CFG */
data_offset += NVME_REG_BAR0_SIZE;
data_ptr += NVME_REG_BAR0_SIZE;
migr_state.ctrlr_data.bar_offset[VFU_PCI_DEV_CFG_REGION_IDX] = data_offset;
migr_state.ctrlr_data.bar_len[VFU_PCI_DEV_CFG_REGION_IDX] = NVME_REG_CFG_SIZE;
migr_state.ctrlr_header.bar_offset[VFU_PCI_DEV_CFG_REGION_IDX] = data_offset;
migr_state.ctrlr_header.bar_len[VFU_PCI_DEV_CFG_REGION_IDX] = NVME_REG_CFG_SIZE;
memcpy(data_ptr, &migr_state.cfg, NVME_REG_CFG_SIZE);
/* Copy device state finally */
memcpy(endpoint->migr_data, &migr_state.ctrlr_data, sizeof(struct nvme_migr_device_state));
/* Copy nvme migration header finally */
memcpy(endpoint->migr_data, &migr_state.ctrlr_header, sizeof(struct vfio_user_nvme_migr_header));
if (SPDK_DEBUGLOG_FLAG_ENABLED("nvmf_vfio")) {
vfio_user_ctrlr_dump_migr_data("SAVE", &migr_state);
@ -2701,19 +2687,19 @@ vfio_user_migr_ctrlr_restore(struct nvmf_vfio_user_ctrlr *vu_ctrlr)
ctrlr->vcprop.asq = regs->asq;
ctrlr->vcprop.acq = regs->acq;
/* restore controller private data */
rc = nvmf_ctrlr_restore_migr_data(ctrlr, &migr_state.private_data);
/* restore nvmf controller data */
rc = nvmf_ctrlr_restore_migr_data(ctrlr, &migr_state.nvmf_data);
if (rc) {
return rc;
}
/* resubmit pending AERs */
for (i = 0; i < migr_state.ctrlr_data.nr_aers; i++) {
for (i = 0; i < migr_state.ctrlr_header.nr_aers; i++) {
SPDK_DEBUGLOG(nvmf_vfio, "%s AER resubmit, CID %u\n", ctrlr_id(vu_ctrlr),
migr_state.ctrlr_data.aer_cids[i]);
migr_state.ctrlr_header.aer_cids[i]);
memset(&cmd, 0, sizeof(cmd));
cmd.opc = SPDK_NVME_OPC_ASYNC_EVENT_REQUEST;
cmd.cid = migr_state.ctrlr_data.aer_cids[i];
cmd.cid = migr_state.ctrlr_header.aer_cids[i];
rc = handle_cmd_req(vu_ctrlr, &cmd, vu_ctrlr->sqs[0]);
if (rc) {
break;