C++ (Cpp) iser_dump_page_vec Examples

Example #1

File: iser_memory.c Project: 513855417/linux

static
int iser_fast_reg_fmr(struct iscsi_iser_task *iser_task,
		      struct iser_data_buf *mem,
		      struct iser_reg_resources *rsc,
		      struct iser_mem_reg *reg)
{
	struct ib_conn *ib_conn = &iser_task->iser_conn->ib_conn;
	struct iser_device *device = ib_conn->device;
	struct iser_page_vec *page_vec = rsc->page_vec;
	struct ib_fmr_pool *fmr_pool = rsc->fmr_pool;
	struct ib_pool_fmr *fmr;
	int ret, plen;

	page_vec->npages = 0;
	page_vec->fake_mr.page_size = SIZE_4K;
	plen = ib_sg_to_pages(&page_vec->fake_mr, mem->sg,
			      mem->size, NULL, iser_set_page);
	if (unlikely(plen < mem->size)) {
		iser_err("page vec too short to hold this SG\n");
		iser_data_buf_dump(mem, device->ib_device);
		iser_dump_page_vec(page_vec);
		return -EINVAL;
	}

	fmr  = ib_fmr_pool_map_phys(fmr_pool, page_vec->pages,
				    page_vec->npages, page_vec->pages[0]);
	if (IS_ERR(fmr)) {
		ret = PTR_ERR(fmr);
		iser_err("ib_fmr_pool_map_phys failed: %d\n", ret);
		return ret;
	}

	reg->sge.lkey = fmr->fmr->lkey;
	reg->rkey = fmr->fmr->rkey;
	reg->sge.addr = page_vec->fake_mr.iova;
	reg->sge.length = page_vec->fake_mr.length;
	reg->mem_h = fmr;

	iser_dbg("fmr reg: 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;
}

Example #2

File: iser_memory.c Project: FatSunHYS/OSCourseDesign

static void iser_page_vec_build(struct iser_data_buf *data,
				struct iser_page_vec *page_vec)
{
	int page_vec_len = 0;

	page_vec->length = 0;
	page_vec->offset = 0;

	iser_dbg("Translating sg sz: %d\n", data->dma_nents);
	page_vec_len = iser_sg_to_page_vec(data,page_vec);
	iser_dbg("sg len %d page_vec_len %d\n", data->dma_nents,page_vec_len);

	page_vec->length = page_vec_len;

	if (page_vec_len * PAGE_SIZE < page_vec->data_size) {
		iser_err("page_vec too short to hold this SG\n");
		iser_data_buf_dump(data);
		iser_dump_page_vec(page_vec);
		BUG();
	}
}