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-rw-r--r--drivers/nvme/host/fc.h15
-rw-r--r--drivers/nvme/target/fc.c53
2 files changed, 38 insertions, 30 deletions
diff --git a/drivers/nvme/host/fc.h b/drivers/nvme/host/fc.h
index d2861cdd58ee..08fa88381d45 100644
--- a/drivers/nvme/host/fc.h
+++ b/drivers/nvme/host/fc.h
@@ -16,6 +16,21 @@
* ****************** FC-NVME LS HANDLING ******************
*/
+union nvmefc_ls_requests {
+ struct fcnvme_ls_cr_assoc_rqst rq_cr_assoc;
+ struct fcnvme_ls_cr_conn_rqst rq_cr_conn;
+ struct fcnvme_ls_disconnect_assoc_rqst rq_dis_assoc;
+ struct fcnvme_ls_disconnect_conn_rqst rq_dis_conn;
+} __aligned(128); /* alignment for other things alloc'd with */
+
+union nvmefc_ls_responses {
+ struct fcnvme_ls_rjt rsp_rjt;
+ struct fcnvme_ls_cr_assoc_acc rsp_cr_assoc;
+ struct fcnvme_ls_cr_conn_acc rsp_cr_conn;
+ struct fcnvme_ls_disconnect_assoc_acc rsp_dis_assoc;
+ struct fcnvme_ls_disconnect_conn_acc rsp_dis_conn;
+} __aligned(128); /* alignment for other things alloc'd with */
+
static inline void
nvme_fc_format_rsp_hdr(void *buf, u8 ls_cmd, __be32 desc_len, u8 rqst_ls_cmd)
{
diff --git a/drivers/nvme/target/fc.c b/drivers/nvme/target/fc.c
index 1f3118a3b0a3..66de6bd8f4fd 100644
--- a/drivers/nvme/target/fc.c
+++ b/drivers/nvme/target/fc.c
@@ -22,9 +22,6 @@
#define NVMET_LS_CTX_COUNT 256
-/* for this implementation, assume small single frame rqst/rsp */
-#define NVME_FC_MAX_LS_BUFFER_SIZE 2048
-
struct nvmet_fc_tgtport;
struct nvmet_fc_tgt_assoc;
@@ -37,8 +34,8 @@ struct nvmet_fc_ls_iod {
struct nvmet_fc_tgtport *tgtport;
struct nvmet_fc_tgt_assoc *assoc;
- u8 *rqstbuf;
- u8 *rspbuf;
+ union nvmefc_ls_requests *rqstbuf;
+ union nvmefc_ls_responses *rspbuf;
u16 rqstdatalen;
dma_addr_t rspdma;
@@ -340,15 +337,16 @@ nvmet_fc_alloc_ls_iodlist(struct nvmet_fc_tgtport *tgtport)
iod->tgtport = tgtport;
list_add_tail(&iod->ls_list, &tgtport->ls_list);
- iod->rqstbuf = kcalloc(2, NVME_FC_MAX_LS_BUFFER_SIZE,
- GFP_KERNEL);
+ iod->rqstbuf = kzalloc(sizeof(union nvmefc_ls_requests) +
+ sizeof(union nvmefc_ls_responses),
+ GFP_KERNEL);
if (!iod->rqstbuf)
goto out_fail;
- iod->rspbuf = iod->rqstbuf + NVME_FC_MAX_LS_BUFFER_SIZE;
+ iod->rspbuf = (union nvmefc_ls_responses *)&iod->rqstbuf[1];
iod->rspdma = fc_dma_map_single(tgtport->dev, iod->rspbuf,
- NVME_FC_MAX_LS_BUFFER_SIZE,
+ sizeof(*iod->rspbuf),
DMA_TO_DEVICE);
if (fc_dma_mapping_error(tgtport->dev, iod->rspdma))
goto out_fail;
@@ -361,7 +359,7 @@ out_fail:
list_del(&iod->ls_list);
for (iod--, i--; i >= 0; iod--, i--) {
fc_dma_unmap_single(tgtport->dev, iod->rspdma,
- NVME_FC_MAX_LS_BUFFER_SIZE, DMA_TO_DEVICE);
+ sizeof(*iod->rspbuf), DMA_TO_DEVICE);
kfree(iod->rqstbuf);
list_del(&iod->ls_list);
}
@@ -379,7 +377,7 @@ nvmet_fc_free_ls_iodlist(struct nvmet_fc_tgtport *tgtport)
for (i = 0; i < NVMET_LS_CTX_COUNT; iod++, i++) {
fc_dma_unmap_single(tgtport->dev,
- iod->rspdma, NVME_FC_MAX_LS_BUFFER_SIZE,
+ iod->rspdma, sizeof(*iod->rspbuf),
DMA_TO_DEVICE);
kfree(iod->rqstbuf);
list_del(&iod->ls_list);
@@ -1262,10 +1260,8 @@ static void
nvmet_fc_ls_create_association(struct nvmet_fc_tgtport *tgtport,
struct nvmet_fc_ls_iod *iod)
{
- struct fcnvme_ls_cr_assoc_rqst *rqst =
- (struct fcnvme_ls_cr_assoc_rqst *)iod->rqstbuf;
- struct fcnvme_ls_cr_assoc_acc *acc =
- (struct fcnvme_ls_cr_assoc_acc *)iod->rspbuf;
+ struct fcnvme_ls_cr_assoc_rqst *rqst = &iod->rqstbuf->rq_cr_assoc;
+ struct fcnvme_ls_cr_assoc_acc *acc = &iod->rspbuf->rsp_cr_assoc;
struct nvmet_fc_tgt_queue *queue;
int ret = 0;
@@ -1313,7 +1309,7 @@ nvmet_fc_ls_create_association(struct nvmet_fc_tgtport *tgtport,
"Create Association LS failed: %s\n",
validation_errors[ret]);
iod->lsrsp->rsplen = nvme_fc_format_rjt(acc,
- NVME_FC_MAX_LS_BUFFER_SIZE, rqst->w0.ls_cmd,
+ sizeof(*acc), rqst->w0.ls_cmd,
FCNVME_RJT_RC_LOGIC,
FCNVME_RJT_EXP_NONE, 0);
return;
@@ -1348,10 +1344,8 @@ static void
nvmet_fc_ls_create_connection(struct nvmet_fc_tgtport *tgtport,
struct nvmet_fc_ls_iod *iod)
{
- struct fcnvme_ls_cr_conn_rqst *rqst =
- (struct fcnvme_ls_cr_conn_rqst *)iod->rqstbuf;
- struct fcnvme_ls_cr_conn_acc *acc =
- (struct fcnvme_ls_cr_conn_acc *)iod->rspbuf;
+ struct fcnvme_ls_cr_conn_rqst *rqst = &iod->rqstbuf->rq_cr_conn;
+ struct fcnvme_ls_cr_conn_acc *acc = &iod->rspbuf->rsp_cr_conn;
struct nvmet_fc_tgt_queue *queue;
int ret = 0;
@@ -1404,7 +1398,7 @@ nvmet_fc_ls_create_connection(struct nvmet_fc_tgtport *tgtport,
"Create Connection LS failed: %s\n",
validation_errors[ret]);
iod->lsrsp->rsplen = nvme_fc_format_rjt(acc,
- NVME_FC_MAX_LS_BUFFER_SIZE, rqst->w0.ls_cmd,
+ sizeof(*acc), rqst->w0.ls_cmd,
(ret == VERR_NO_ASSOC) ?
FCNVME_RJT_RC_INV_ASSOC :
FCNVME_RJT_RC_LOGIC,
@@ -1437,9 +1431,9 @@ nvmet_fc_ls_disconnect(struct nvmet_fc_tgtport *tgtport,
struct nvmet_fc_ls_iod *iod)
{
struct fcnvme_ls_disconnect_assoc_rqst *rqst =
- (struct fcnvme_ls_disconnect_assoc_rqst *)iod->rqstbuf;
+ &iod->rqstbuf->rq_dis_assoc;
struct fcnvme_ls_disconnect_assoc_acc *acc =
- (struct fcnvme_ls_disconnect_assoc_acc *)iod->rspbuf;
+ &iod->rspbuf->rsp_dis_assoc;
struct nvmet_fc_tgt_assoc *assoc;
int ret = 0;
@@ -1484,7 +1478,7 @@ nvmet_fc_ls_disconnect(struct nvmet_fc_tgtport *tgtport,
"Disconnect LS failed: %s\n",
validation_errors[ret]);
iod->lsrsp->rsplen = nvme_fc_format_rjt(acc,
- NVME_FC_MAX_LS_BUFFER_SIZE, rqst->w0.ls_cmd,
+ sizeof(*acc), rqst->w0.ls_cmd,
(ret == VERR_NO_ASSOC) ?
FCNVME_RJT_RC_INV_ASSOC :
FCNVME_RJT_RC_LOGIC,
@@ -1522,7 +1516,7 @@ nvmet_fc_xmt_ls_rsp_done(struct nvmefc_ls_rsp *lsrsp)
struct nvmet_fc_tgtport *tgtport = iod->tgtport;
fc_dma_sync_single_for_cpu(tgtport->dev, iod->rspdma,
- NVME_FC_MAX_LS_BUFFER_SIZE, DMA_TO_DEVICE);
+ sizeof(*iod->rspbuf), DMA_TO_DEVICE);
nvmet_fc_free_ls_iod(tgtport, iod);
nvmet_fc_tgtport_put(tgtport);
}
@@ -1534,7 +1528,7 @@ nvmet_fc_xmt_ls_rsp(struct nvmet_fc_tgtport *tgtport,
int ret;
fc_dma_sync_single_for_device(tgtport->dev, iod->rspdma,
- NVME_FC_MAX_LS_BUFFER_SIZE, DMA_TO_DEVICE);
+ sizeof(*iod->rspbuf), DMA_TO_DEVICE);
ret = tgtport->ops->xmt_ls_rsp(&tgtport->fc_target_port, iod->lsrsp);
if (ret)
@@ -1548,8 +1542,7 @@ static void
nvmet_fc_handle_ls_rqst(struct nvmet_fc_tgtport *tgtport,
struct nvmet_fc_ls_iod *iod)
{
- struct fcnvme_ls_rqst_w0 *w0 =
- (struct fcnvme_ls_rqst_w0 *)iod->rqstbuf;
+ struct fcnvme_ls_rqst_w0 *w0 = &iod->rqstbuf->rq_cr_assoc.w0;
iod->lsrsp->nvme_fc_private = iod;
iod->lsrsp->rspbuf = iod->rspbuf;
@@ -1580,7 +1573,7 @@ nvmet_fc_handle_ls_rqst(struct nvmet_fc_tgtport *tgtport,
break;
default:
iod->lsrsp->rsplen = nvme_fc_format_rjt(iod->rspbuf,
- NVME_FC_MAX_LS_BUFFER_SIZE, w0->ls_cmd,
+ sizeof(*iod->rspbuf), w0->ls_cmd,
FCNVME_RJT_RC_INVAL, FCNVME_RJT_EXP_NONE, 0);
}
@@ -1627,7 +1620,7 @@ nvmet_fc_rcv_ls_req(struct nvmet_fc_target_port *target_port,
struct nvmet_fc_tgtport *tgtport = targetport_to_tgtport(target_port);
struct nvmet_fc_ls_iod *iod;
- if (lsreqbuf_len > NVME_FC_MAX_LS_BUFFER_SIZE)
+ if (lsreqbuf_len > sizeof(union nvmefc_ls_requests))
return -E2BIG;
if (!nvmet_fc_tgtport_get(tgtport))
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-04 16:29:38 +0000