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Code Issues Releases Wiki Activity

IB/iser: Get rid of struct iser_rdma_regd

Browse source 
This struct members other than struct iser_mem_reg are unused,
so remove it altogether.

This patch does not change any functionality.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Adir Lev <adirl@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Sagi Grimberg 2015-04-14 18:08:19 +03:00 committed by Doug Ledford
parent 6847fdeb0b
commit b130ededff
4 changed files with 53 additions and 70 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

21
drivers/infiniband/ulp/iser/iscsi_iser.h
View file

@ -261,23 +261,6 @@ struct iser_mem_reg {
void *mem_h;
};
/**
* struct iser_regd_buf - iSER buffer registration desc
*
* @reg: memory registration info
* @virt_addr: virtual address of buffer
* @device: reference to iser device
* @direction: dma direction (for dma_unmap)
* @data_size: data buffer size in bytes
*/
struct iser_regd_buf {
struct iser_mem_reg reg;
void *virt_addr;
struct iser_device *device;
enum dma_data_direction direction;
unsigned int data_size;
};
enum iser_desc_type {
ISCSI_TX_CONTROL ,
ISCSI_TX_SCSI_COMMAND,
@ -537,7 +520,7 @@ struct iser_conn {
* @sc: link to scsi command
* @command_sent: indicate if command was sent
* @dir: iser data direction
* @rdma_regd: task rdma registration desc
* @rdma_reg: task rdma registration desc
* @data: iser data buffer desc
* @prot: iser protection buffer desc
*/
@ -548,7 +531,7 @@ struct iscsi_iser_task {
struct scsi_cmnd *sc;
int command_sent;
int dir[ISER_DIRS_NUM];
struct iser_regd_buf rdma_regd[ISER_DIRS_NUM];
struct iser_mem_reg rdma_reg[ISER_DIRS_NUM];
struct iser_data_buf data[ISER_DIRS_NUM];
struct iser_data_buf prot[ISER_DIRS_NUM];
};

44
drivers/infiniband/ulp/iser/iser_initiator.c
View file

@ -50,7 +50,7 @@ static int iser_prepare_read_cmd(struct iscsi_task *task)
{
struct iscsi_iser_task *iser_task = task->dd_data;
struct iser_device *device = iser_task->iser_conn->ib_conn.device;
struct iser_regd_buf *regd_buf;
struct iser_mem_reg *mem_reg;
int err;
struct iser_hdr *hdr = &iser_task->desc.iser_header;
struct iser_data_buf *buf_in = &iser_task->data[ISER_DIR_IN];
@ -78,15 +78,15 @@ static int iser_prepare_read_cmd(struct iscsi_task *task)
iser_err("Failed to set up Data-IN RDMA\n");
return err;
}
regd_buf = &iser_task->rdma_regd[ISER_DIR_IN];
mem_reg = &iser_task->rdma_reg[ISER_DIR_IN];
hdr->flags |= ISER_RSV;
hdr->read_stag = cpu_to_be32(regd_buf->reg.rkey);
hdr->read_va = cpu_to_be64(regd_buf->reg.va);
hdr->read_stag = cpu_to_be32(mem_reg->rkey);
hdr->read_va = cpu_to_be64(mem_reg->va);
iser_dbg("Cmd itt:%d READ tags RKEY:%#.4X VA:%#llX\n",
task->itt, regd_buf->reg.rkey,
(unsigned long long)regd_buf->reg.va);
task->itt, mem_reg->rkey,
(unsigned long long)mem_reg->va);
return 0;
}
@ -104,7 +104,7 @@ iser_prepare_write_cmd(struct iscsi_task *task,
{
struct iscsi_iser_task *iser_task = task->dd_data;
struct iser_device *device = iser_task->iser_conn->ib_conn.device;
struct iser_regd_buf *regd_buf;
struct iser_mem_reg *mem_reg;
int err;
struct iser_hdr *hdr = &iser_task->desc.iser_header;
struct iser_data_buf *buf_out = &iser_task->data[ISER_DIR_OUT];
@ -134,25 +134,25 @@ iser_prepare_write_cmd(struct iscsi_task *task,
return err;
}
regd_buf = &iser_task->rdma_regd[ISER_DIR_OUT];
mem_reg = &iser_task->rdma_reg[ISER_DIR_OUT];
if (unsol_sz < edtl) {
hdr->flags |= ISER_WSV;
hdr->write_stag = cpu_to_be32(regd_buf->reg.rkey);
hdr->write_va = cpu_to_be64(regd_buf->reg.va + unsol_sz);
hdr->write_stag = cpu_to_be32(mem_reg->rkey);
hdr->write_va = cpu_to_be64(mem_reg->va + unsol_sz);
iser_dbg("Cmd itt:%d, WRITE tags, RKEY:%#.4X "
"VA:%#llX + unsol:%d\n",
task->itt, regd_buf->reg.rkey,
(unsigned long long)regd_buf->reg.va, unsol_sz);
task->itt, mem_reg->rkey,
(unsigned long long)mem_reg->va, unsol_sz);
}
if (imm_sz > 0) {
iser_dbg("Cmd itt:%d, WRITE, adding imm.data sz: %d\n",
task->itt, imm_sz);
tx_dsg->addr = regd_buf->reg.va;
tx_dsg->addr = mem_reg->va;
tx_dsg->length = imm_sz;
tx_dsg->lkey = regd_buf->reg.lkey;
tx_dsg->lkey = mem_reg->lkey;
iser_task->desc.num_sge = 2;
}
@ -450,7 +450,7 @@ int iser_send_data_out(struct iscsi_conn *conn,
struct iser_conn *iser_conn = conn->dd_data;
struct iscsi_iser_task *iser_task = task->dd_data;
struct iser_tx_desc *tx_desc = NULL;
struct iser_regd_buf *regd_buf;
struct iser_mem_reg *mem_reg;
unsigned long buf_offset;
unsigned long data_seg_len;
uint32_t itt;
@ -477,11 +477,11 @@ int iser_send_data_out(struct iscsi_conn *conn,
/* build the tx desc */
iser_initialize_task_headers(task, tx_desc);
regd_buf = &iser_task->rdma_regd[ISER_DIR_OUT];
mem_reg = &iser_task->rdma_reg[ISER_DIR_OUT];
tx_dsg = &tx_desc->tx_sg[1];
tx_dsg->addr = regd_buf->reg.va + buf_offset;
tx_dsg->addr = mem_reg->va + buf_offset;
tx_dsg->length = data_seg_len;
tx_dsg->lkey = regd_buf->reg.lkey;
tx_dsg->lkey = mem_reg->lkey;
tx_desc->num_sge = 2;
if (buf_offset + data_seg_len > iser_task->data[ISER_DIR_OUT].data_len) {
@ -658,10 +658,10 @@ void iser_task_rdma_init(struct iscsi_iser_task *iser_task)
iser_task->prot[ISER_DIR_IN].data_len = 0;
iser_task->prot[ISER_DIR_OUT].data_len = 0;
memset(&iser_task->rdma_regd[ISER_DIR_IN], 0,
sizeof(struct iser_regd_buf));
memset(&iser_task->rdma_regd[ISER_DIR_OUT], 0,
sizeof(struct iser_regd_buf));
memset(&iser_task->rdma_reg[ISER_DIR_IN], 0,
sizeof(struct iser_mem_reg));
memset(&iser_task->rdma_reg[ISER_DIR_OUT], 0,
sizeof(struct iser_mem_reg));
}
void iser_task_rdma_finalize(struct iscsi_iser_task *iser_task)

56
drivers/infiniband/ulp/iser/iser_memory.c
View file

@ -414,7 +414,7 @@ int iser_reg_page_vec(struct ib_conn *ib_conn,
void iser_unreg_mem_fmr(struct iscsi_iser_task *iser_task,
enum iser_data_dir cmd_dir)
{
struct iser_mem_reg *reg = &iser_task->rdma_regd[cmd_dir].reg;
struct iser_mem_reg *reg = &iser_task->rdma_reg[cmd_dir];
int ret;
if (!reg->mem_h)
@ -432,7 +432,7 @@ void iser_unreg_mem_fmr(struct iscsi_iser_task *iser_task,
void iser_unreg_mem_fastreg(struct iscsi_iser_task *iser_task,
enum iser_data_dir cmd_dir)
{
struct iser_mem_reg *reg = &iser_task->rdma_regd[cmd_dir].reg;
struct iser_mem_reg *reg = &iser_task->rdma_reg[cmd_dir];
struct iser_conn *iser_conn = iser_task->iser_conn;
struct ib_conn *ib_conn = &iser_conn->ib_conn;
struct fast_reg_descriptor *desc = reg->mem_h;
@ -459,13 +459,13 @@ int iser_reg_rdma_mem_fmr(struct iscsi_iser_task *iser_task,
struct iser_device *device = ib_conn->device;
struct ib_device *ibdev = device->ib_device;
struct iser_data_buf *mem = &iser_task->data[cmd_dir];
struct iser_regd_buf *regd_buf;
struct iser_mem_reg *mem_reg;
int aligned_len;
int err;
int i;
struct scatterlist *sg;
regd_buf = &iser_task->rdma_regd[cmd_dir];
mem_reg = &iser_task->rdma_reg[cmd_dir];
aligned_len = iser_data_buf_aligned_len(mem, ibdev);
if (aligned_len != mem->dma_nents) {
@ -481,21 +481,21 @@ int iser_reg_rdma_mem_fmr(struct iscsi_iser_task *iser_task,
if (mem->dma_nents == 1) {
sg = mem->sg;
regd_buf->reg.lkey = device->mr->lkey;
regd_buf->reg.rkey = device->mr->rkey;
regd_buf->reg.len = ib_sg_dma_len(ibdev, &sg[0]);
regd_buf->reg.va = ib_sg_dma_address(ibdev, &sg[0]);
mem_reg->lkey = device->mr->lkey;
mem_reg->rkey = device->mr->rkey;
mem_reg->len = ib_sg_dma_len(ibdev, &sg[0]);
mem_reg->va = ib_sg_dma_address(ibdev, &sg[0]);
iser_dbg("PHYSICAL Mem.register: lkey: 0x%08X rkey: 0x%08X "
"va: 0x%08lX sz: %ld]\n",
(unsigned int)regd_buf->reg.lkey,
(unsigned int)regd_buf->reg.rkey,
(unsigned long)regd_buf->reg.va,
(unsigned long)regd_buf->reg.len);
(unsigned int)mem_reg->lkey,
(unsigned int)mem_reg->rkey,
(unsigned long)mem_reg->va,
(unsigned long)mem_reg->len);
} else { /* use FMR for multiple dma entries */
iser_page_vec_build(mem, ib_conn->fmr.page_vec, ibdev);
err = iser_reg_page_vec(ib_conn, ib_conn->fmr.page_vec,
&regd_buf->reg);
mem_reg);
if (err && err != -EAGAIN) {
iser_data_buf_dump(mem, ibdev);
iser_err("mem->dma_nents = %d (dlength = 0x%x)\n",
@ -652,12 +652,12 @@ iser_reg_sig_mr(struct iscsi_iser_task *iser_task,
}
static int iser_fast_reg_mr(struct iscsi_iser_task *iser_task,
struct iser_regd_buf *regd_buf,
struct iser_mem_reg *mem_reg,
struct iser_data_buf *mem,
enum iser_reg_indicator ind,
struct ib_sge *sge)
{
struct fast_reg_descriptor *desc = regd_buf->reg.mem_h;
struct fast_reg_descriptor *desc = mem_reg->mem_h;
struct ib_conn *ib_conn = &iser_task->iser_conn->ib_conn;
struct iser_device *device = ib_conn->device;
struct ib_device *ibdev = device->ib_device;
@ -746,7 +746,7 @@ int iser_reg_rdma_mem_fastreg(struct iscsi_iser_task *iser_task,
struct iser_device *device = ib_conn->device;
struct ib_device *ibdev = device->ib_device;
struct iser_data_buf *mem = &iser_task->data[cmd_dir];
struct iser_regd_buf *regd_buf = &iser_task->rdma_regd[cmd_dir];
struct iser_mem_reg *mem_reg = &iser_task->rdma_reg[cmd_dir];
struct fast_reg_descriptor *desc = NULL;
struct ib_sge data_sge;
int err, aligned_len;
@ -769,10 +769,10 @@ int iser_reg_rdma_mem_fastreg(struct iscsi_iser_task *iser_task,
struct fast_reg_descriptor, list);
list_del(&desc->list);
spin_unlock_irqrestore(&ib_conn->lock, flags);
regd_buf->reg.mem_h = desc;
mem_reg->mem_h = desc;
}
err = iser_fast_reg_mr(iser_task, regd_buf, mem,
err = iser_fast_reg_mr(iser_task, mem_reg, mem,
ISER_DATA_KEY_VALID, &data_sge);
if (err)
goto err_reg;
@ -793,7 +793,7 @@ int iser_reg_rdma_mem_fastreg(struct iscsi_iser_task *iser_task,
}
}
err = iser_fast_reg_mr(iser_task, regd_buf, mem,
err = iser_fast_reg_mr(iser_task, mem_reg, mem,
ISER_PROT_KEY_VALID, &prot_sge);
if (err)
goto err_reg;
@ -807,19 +807,19 @@ int iser_reg_rdma_mem_fastreg(struct iscsi_iser_task *iser_task,
}
desc->reg_indicators |= ISER_FASTREG_PROTECTED;
regd_buf->reg.lkey = sig_sge.lkey;
regd_buf->reg.rkey = desc->pi_ctx->sig_mr->rkey;
regd_buf->reg.va = sig_sge.addr;
regd_buf->reg.len = sig_sge.length;
mem_reg->lkey = sig_sge.lkey;
mem_reg->rkey = desc->pi_ctx->sig_mr->rkey;
mem_reg->va = sig_sge.addr;
mem_reg->len = sig_sge.length;
} else {
if (desc)
regd_buf->reg.rkey = desc->data_mr->rkey;
mem_reg->rkey = desc->data_mr->rkey;
else
regd_buf->reg.rkey = device->mr->rkey;
mem_reg->rkey = device->mr->rkey;
regd_buf->reg.lkey = data_sge.lkey;
regd_buf->reg.va = data_sge.addr;
regd_buf->reg.len = data_sge.length;
mem_reg->lkey = data_sge.lkey;
mem_reg->va = data_sge.addr;
mem_reg->len = data_sge.length;
}
return 0;

2
drivers/infiniband/ulp/iser/iser_verbs.c
View file

@ -1220,7 +1220,7 @@ static void iser_cq_callback(struct ib_cq *cq, void *cq_context)
u8 iser_check_task_pi_status(struct iscsi_iser_task *iser_task,
enum iser_data_dir cmd_dir, sector_t *sector)
{
struct iser_mem_reg *reg = &iser_task->rdma_regd[cmd_dir].reg;
struct iser_mem_reg *reg = &iser_task->rdma_reg[cmd_dir];
struct fast_reg_descriptor *desc = reg->mem_h;
unsigned long sector_size = iser_task->sc->device->sector_size;
struct ib_mr_status mr_status;