ib_dma_unmap_sg(dev, data->sg, data->size, dir);
}
+static int
+iser_reg_dma(struct iser_device *device, struct iser_data_buf *mem,
+ struct iser_mem_reg *reg)
+{
+ struct scatterlist *sg = mem->sg;
+
+ reg->sge.lkey = device->mr->lkey;
+ reg->rkey = device->mr->rkey;
+ reg->sge.addr = ib_sg_dma_address(device->ib_device, &sg[0]);
+ reg->sge.length = ib_sg_dma_len(device->ib_device, &sg[0]);
+
+ iser_dbg("Single DMA entry: lkey=0x%x, rkey=0x%x, addr=0x%llx,"
+ " length=0x%x\n", reg->sge.lkey, reg->rkey,
+ reg->sge.addr, reg->sge.length);
+
+ return 0;
+}
+
static int fall_to_bounce_buf(struct iscsi_iser_task *iser_task,
struct iser_data_buf *mem,
enum iser_data_dir cmd_dir,
int aligned_len;
int err;
int i;
- struct scatterlist *sg;
mem_reg = &iser_task->rdma_reg[cmd_dir];
/* if there a single dma entry, FMR is not needed */
if (mem->dma_nents == 1) {
- sg = mem->sg;
-
- mem_reg->sge.lkey = device->mr->lkey;
- mem_reg->rkey = device->mr->rkey;
- mem_reg->sge.length = ib_sg_dma_len(ibdev, &sg[0]);
- mem_reg->sge.addr = 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)mem_reg->sge.lkey,
- (unsigned int)mem_reg->rkey,
- (unsigned long)mem_reg->sge.addr,
- (unsigned long)mem_reg->sge.length);
+ return iser_reg_dma(device, mem, mem_reg);
} else { /* use FMR for multiple dma entries */
err = iser_reg_page_vec(iser_task, mem, ib_conn->fmr.page_vec,
mem_reg);
{
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;
struct ib_mr *mr;
struct ib_fast_reg_page_list *frpl;
struct ib_send_wr fastreg_wr, inv_wr;
int ret, offset, size, plen;
/* if there a single dma entry, dma mr suffices */
- if (mem->dma_nents == 1) {
- struct scatterlist *sg = mem->sg;
-
- reg->sge.lkey = device->mr->lkey;
- reg->rkey = device->mr->rkey;
- reg->sge.addr = ib_sg_dma_address(ibdev, &sg[0]);
- reg->sge.length = ib_sg_dma_len(ibdev, &sg[0]);
-
- iser_dbg("Single DMA entry: lkey=0x%x, addr=0x%llx, length=0x%x\n",
- reg->sge.lkey, reg->sge.addr, reg->sge.length);
- return 0;
- }
+ if (mem->dma_nents == 1)
+ return iser_reg_dma(device, mem, reg);
if (ind == ISER_DATA_KEY_VALID) {
mr = desc->data_mr;