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path: root/drivers/nvme/target/fc.c
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Diffstat (limited to 'drivers/nvme/target/fc.c')
-rw-r--r--drivers/nvme/target/fc.c48
1 files changed, 26 insertions, 22 deletions
diff --git a/drivers/nvme/target/fc.c b/drivers/nvme/target/fc.c
index 58e010bdda3ea..739b8feadc7de 100644
--- a/drivers/nvme/target/fc.c
+++ b/drivers/nvme/target/fc.c
@@ -76,7 +76,6 @@ struct nvmet_fc_fcp_iod {
dma_addr_t rspdma;
struct scatterlist *data_sg;
int data_sg_cnt;
- u32 total_length;
u32 offset;
enum nvmet_fcp_datadir io_dir;
bool active;
@@ -150,6 +149,7 @@ struct nvmet_fc_tgt_assoc {
struct list_head a_list;
struct nvmet_fc_tgt_queue *queues[NVMET_NR_QUEUES + 1];
struct kref ref;
+ struct work_struct del_work;
};
@@ -232,6 +232,7 @@ static void nvmet_fc_tgtport_put(struct nvmet_fc_tgtport *tgtport);
static int nvmet_fc_tgtport_get(struct nvmet_fc_tgtport *tgtport);
static void nvmet_fc_handle_fcp_rqst(struct nvmet_fc_tgtport *tgtport,
struct nvmet_fc_fcp_iod *fod);
+static void nvmet_fc_delete_target_assoc(struct nvmet_fc_tgt_assoc *assoc);
/* *********************** FC-NVME DMA Handling **************************** */
@@ -802,6 +803,16 @@ nvmet_fc_find_target_queue(struct nvmet_fc_tgtport *tgtport,
return NULL;
}
+static void
+nvmet_fc_delete_assoc(struct work_struct *work)
+{
+ struct nvmet_fc_tgt_assoc *assoc =
+ container_of(work, struct nvmet_fc_tgt_assoc, del_work);
+
+ nvmet_fc_delete_target_assoc(assoc);
+ nvmet_fc_tgt_a_put(assoc);
+}
+
static struct nvmet_fc_tgt_assoc *
nvmet_fc_alloc_target_assoc(struct nvmet_fc_tgtport *tgtport)
{
@@ -826,6 +837,7 @@ nvmet_fc_alloc_target_assoc(struct nvmet_fc_tgtport *tgtport)
assoc->a_id = idx;
INIT_LIST_HEAD(&assoc->a_list);
kref_init(&assoc->ref);
+ INIT_WORK(&assoc->del_work, nvmet_fc_delete_assoc);
while (needrandom) {
get_random_bytes(&ran, sizeof(ran) - BYTES_FOR_QID);
@@ -1118,8 +1130,7 @@ nvmet_fc_delete_ctrl(struct nvmet_ctrl *ctrl)
nvmet_fc_tgtport_put(tgtport);
if (found_ctrl) {
- nvmet_fc_delete_target_assoc(assoc);
- nvmet_fc_tgt_a_put(assoc);
+ schedule_work(&assoc->del_work);
return;
}
@@ -1688,7 +1699,7 @@ nvmet_fc_alloc_tgt_pgs(struct nvmet_fc_fcp_iod *fod)
u32 page_len, length;
int i = 0;
- length = fod->total_length;
+ length = fod->req.transfer_len;
nent = DIV_ROUND_UP(length, PAGE_SIZE);
sg = kmalloc_array(nent, sizeof(struct scatterlist), GFP_KERNEL);
if (!sg)
@@ -1777,7 +1788,7 @@ nvmet_fc_prep_fcp_rsp(struct nvmet_fc_tgtport *tgtport,
u32 rsn, rspcnt, xfr_length;
if (fod->fcpreq->op == NVMET_FCOP_READDATA_RSP)
- xfr_length = fod->total_length;
+ xfr_length = fod->req.transfer_len;
else
xfr_length = fod->offset;
@@ -1803,7 +1814,7 @@ nvmet_fc_prep_fcp_rsp(struct nvmet_fc_tgtport *tgtport,
rspcnt = atomic_inc_return(&fod->queue->zrspcnt);
if (!(rspcnt % fod->queue->ersp_ratio) ||
sqe->opcode == nvme_fabrics_command ||
- xfr_length != fod->total_length ||
+ xfr_length != fod->req.transfer_len ||
(le16_to_cpu(cqe->status) & 0xFFFE) || cqewd[0] || cqewd[1] ||
(sqe->flags & (NVME_CMD_FUSE_FIRST | NVME_CMD_FUSE_SECOND)) ||
queue_90percent_full(fod->queue, le16_to_cpu(cqe->sq_head)))
@@ -1880,7 +1891,7 @@ nvmet_fc_transfer_fcp_data(struct nvmet_fc_tgtport *tgtport,
fcpreq->timeout = NVME_FC_TGTOP_TIMEOUT_SEC;
tlen = min_t(u32, tgtport->max_sg_cnt * PAGE_SIZE,
- (fod->total_length - fod->offset));
+ (fod->req.transfer_len - fod->offset));
fcpreq->transfer_length = tlen;
fcpreq->transferred_length = 0;
fcpreq->fcp_error = 0;
@@ -1894,7 +1905,7 @@ nvmet_fc_transfer_fcp_data(struct nvmet_fc_tgtport *tgtport,
* combined xfr with response.
*/
if ((op == NVMET_FCOP_READDATA) &&
- ((fod->offset + fcpreq->transfer_length) == fod->total_length) &&
+ ((fod->offset + fcpreq->transfer_length) == fod->req.transfer_len) &&
(tgtport->ops->target_features & NVMET_FCTGTFEAT_READDATA_RSP)) {
fcpreq->op = NVMET_FCOP_READDATA_RSP;
nvmet_fc_prep_fcp_rsp(tgtport, fod);
@@ -1974,7 +1985,7 @@ nvmet_fc_fod_op_done(struct nvmet_fc_fcp_iod *fod)
}
fod->offset += fcpreq->transferred_length;
- if (fod->offset != fod->total_length) {
+ if (fod->offset != fod->req.transfer_len) {
spin_lock_irqsave(&fod->flock, flags);
fod->writedataactive = true;
spin_unlock_irqrestore(&fod->flock, flags);
@@ -1986,9 +1997,7 @@ nvmet_fc_fod_op_done(struct nvmet_fc_fcp_iod *fod)
}
/* data transfer complete, resume with nvmet layer */
-
- fod->req.execute(&fod->req);
-
+ nvmet_req_execute(&fod->req);
break;
case NVMET_FCOP_READDATA:
@@ -2011,7 +2020,7 @@ nvmet_fc_fod_op_done(struct nvmet_fc_fcp_iod *fod)
}
fod->offset += fcpreq->transferred_length;
- if (fod->offset != fod->total_length) {
+ if (fod->offset != fod->req.transfer_len) {
/* transfer the next chunk */
nvmet_fc_transfer_fcp_data(tgtport, fod,
NVMET_FCOP_READDATA);
@@ -2148,7 +2157,7 @@ nvmet_fc_handle_fcp_rqst(struct nvmet_fc_tgtport *tgtport,
fod->fcpreq->done = nvmet_fc_xmt_fcp_op_done;
- fod->total_length = be32_to_cpu(cmdiu->data_len);
+ fod->req.transfer_len = be32_to_cpu(cmdiu->data_len);
if (cmdiu->flags & FCNVME_CMD_FLAGS_WRITE) {
fod->io_dir = NVMET_FCP_WRITE;
if (!nvme_is_write(&cmdiu->sqe))
@@ -2159,7 +2168,7 @@ nvmet_fc_handle_fcp_rqst(struct nvmet_fc_tgtport *tgtport,
goto transport_error;
} else {
fod->io_dir = NVMET_FCP_NODATA;
- if (fod->total_length)
+ if (fod->req.transfer_len)
goto transport_error;
}
@@ -2167,9 +2176,6 @@ nvmet_fc_handle_fcp_rqst(struct nvmet_fc_tgtport *tgtport,
fod->req.rsp = &fod->rspiubuf.cqe;
fod->req.port = fod->queue->port;
- /* ensure nvmet handlers will set cmd handler callback */
- fod->req.execute = NULL;
-
/* clear any response payload */
memset(&fod->rspiubuf, 0, sizeof(fod->rspiubuf));
@@ -2189,7 +2195,7 @@ nvmet_fc_handle_fcp_rqst(struct nvmet_fc_tgtport *tgtport,
/* keep a running counter of tail position */
atomic_inc(&fod->queue->sqtail);
- if (fod->total_length) {
+ if (fod->req.transfer_len) {
ret = nvmet_fc_alloc_tgt_pgs(fod);
if (ret) {
nvmet_req_complete(&fod->req, ret);
@@ -2212,9 +2218,7 @@ nvmet_fc_handle_fcp_rqst(struct nvmet_fc_tgtport *tgtport,
* can invoke the nvmet_layer now. If read data, cmd completion will
* push the data
*/
-
- fod->req.execute(&fod->req);
-
+ nvmet_req_execute(&fod->req);
return;
transport_error:
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-01 08:01:52 +0000