IB/iser,isert: Create and use new shared header
The iser RDMA_CM negotiation protocol is shared by
the initiator and the target, so have a shared header
for the defines and structure. Move relevant items from
the initiator and target headers.
Signed-off-by: Sagi Grimberg <[email protected]>
Signed-off-by: Jenny Derzhavetz <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Doug Ledford <[email protected]>
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.h b/drivers/infiniband/ulp/iser/iscsi_iser.h
index a6356bc..d3b2a27 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.h
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.h
@@ -48,6 +48,7 @@
#include <scsi/scsi_transport_iscsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
+#include <scsi/iser.h>
#include <linux/interrupt.h>
#include <linux/wait.h>
@@ -153,40 +154,8 @@
#define ISER_SIGNAL_CMD_COUNT 32
-#define ISER_VER 0x10
-#define ISER_WSV 0x08
-#define ISER_RSV 0x04
-
-/**
- * struct iser_hdr - iSER header
- *
- * @flags: flags support (zbva, remote_inv)
- * @rsvd: reserved
- * @write_stag: write rkey
- * @write_va: write virtual address
- * @reaf_stag: read rkey
- * @read_va: read virtual address
- */
-struct iser_hdr {
- u8 flags;
- u8 rsvd[3];
- __be32 write_stag;
- __be64 write_va;
- __be32 read_stag;
- __be64 read_va;
-} __attribute__((packed));
-
-
-#define ISER_ZBVA_NOT_SUPPORTED 0x80
-#define ISER_SEND_W_INV_NOT_SUPPORTED 0x40
-
-struct iser_cm_hdr {
- u8 flags;
- u8 rsvd[3];
-} __packed;
-
/* Constant PDU lengths calculations */
-#define ISER_HEADERS_LEN (sizeof(struct iser_hdr) + sizeof(struct iscsi_hdr))
+#define ISER_HEADERS_LEN (sizeof(struct iser_ctrl) + sizeof(struct iscsi_hdr))
#define ISER_RECV_DATA_SEG_LEN 128
#define ISER_RX_PAYLOAD_SIZE (ISER_HEADERS_LEN + ISER_RECV_DATA_SEG_LEN)
@@ -283,7 +252,7 @@
* @sig_attrs: Signature attributes
*/
struct iser_tx_desc {
- struct iser_hdr iser_header;
+ struct iser_ctrl iser_header;
struct iscsi_hdr iscsi_header;
enum iser_desc_type type;
u64 dma_addr;
@@ -316,7 +285,7 @@
* @pad: for sense data TODO: Modify to maximum sense length supported
*/
struct iser_rx_desc {
- struct iser_hdr iser_header;
+ struct iser_ctrl iser_header;
struct iscsi_hdr iscsi_header;
char data[ISER_RECV_DATA_SEG_LEN];
u64 dma_addr;
diff --git a/drivers/infiniband/ulp/iser/iser_initiator.c b/drivers/infiniband/ulp/iser/iser_initiator.c
index bc96dcb..07ca5a9 100644
--- a/drivers/infiniband/ulp/iser/iser_initiator.c
+++ b/drivers/infiniband/ulp/iser/iser_initiator.c
@@ -51,7 +51,7 @@
struct iscsi_iser_task *iser_task = task->dd_data;
struct iser_mem_reg *mem_reg;
int err;
- struct iser_hdr *hdr = &iser_task->desc.iser_header;
+ struct iser_ctrl *hdr = &iser_task->desc.iser_header;
struct iser_data_buf *buf_in = &iser_task->data[ISER_DIR_IN];
err = iser_dma_map_task_data(iser_task,
@@ -104,7 +104,7 @@
struct iscsi_iser_task *iser_task = task->dd_data;
struct iser_mem_reg *mem_reg;
int err;
- struct iser_hdr *hdr = &iser_task->desc.iser_header;
+ struct iser_ctrl *hdr = &iser_task->desc.iser_header;
struct iser_data_buf *buf_out = &iser_task->data[ISER_DIR_OUT];
struct ib_sge *tx_dsg = &iser_task->desc.tx_sg[1];
@@ -167,7 +167,7 @@
ib_dma_sync_single_for_cpu(device->ib_device,
tx_desc->dma_addr, ISER_HEADERS_LEN, DMA_TO_DEVICE);
- memset(&tx_desc->iser_header, 0, sizeof(struct iser_hdr));
+ memset(&tx_desc->iser_header, 0, sizeof(struct iser_ctrl));
tx_desc->iser_header.flags = ISER_VER;
tx_desc->num_sge = 1;
}
@@ -574,7 +574,7 @@
desc->rsp_dma, ISER_RX_LOGIN_SIZE,
DMA_FROM_DEVICE);
- hdr = desc->rsp + sizeof(struct iser_hdr);
+ hdr = desc->rsp + sizeof(struct iser_ctrl);
data = desc->rsp + ISER_HEADERS_LEN;
length = wc->byte_len - ISER_HEADERS_LEN;
diff --git a/drivers/infiniband/ulp/iser/iser_verbs.c b/drivers/infiniband/ulp/iser/iser_verbs.c
index a27e554..1752e40d 100644
--- a/drivers/infiniband/ulp/iser/iser_verbs.c
+++ b/drivers/infiniband/ulp/iser/iser_verbs.c
@@ -812,10 +812,9 @@
conn_param.rnr_retry_count = 6;
memset(&req_hdr, 0, sizeof(req_hdr));
- req_hdr.flags = (ISER_ZBVA_NOT_SUPPORTED |
- ISER_SEND_W_INV_NOT_SUPPORTED);
- conn_param.private_data = (void *)&req_hdr;
- conn_param.private_data_len = sizeof(struct iser_cm_hdr);
+ req_hdr.flags = (ISER_ZBVA_NOT_SUP | ISER_SEND_W_INV_NOT_SUP);
+ conn_param.private_data = (void *)&req_hdr;
+ conn_param.private_data_len = sizeof(struct iser_cm_hdr);
ret = rdma_connect(cma_id, &conn_param);
if (ret) {
