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IB/iser: Merge build page-vec into register page-vec

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No need for these two separate. Keep it in a single routine
like in the fastreg case. This will also make iser_reg_page_vec
closer to iser_fast_reg_mr arguments. This is a preparation
step for registration flow refactor.

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 18:08:20 +03:00 committed by Doug Ledford
parent b130ededff
commit f0e35c27a5
1 changed files with 33 additions and 58 deletions
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91
drivers/infiniband/ulp/iser/iser_memory.c
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@ -280,31 +280,6 @@ static void iser_dump_page_vec(struct iser_page_vec *page_vec)
iser_err("%d %lx\n",i,(unsigned long)page_vec->pages[i]);
}
static void iser_page_vec_build(struct iser_data_buf *data,
struct iser_page_vec *page_vec,
struct ib_device *ibdev)
{
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, ibdev, page_vec->pages,
&page_vec->offset,
&page_vec->data_size);
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 * SIZE_4K < page_vec->data_size) {
iser_err("page_vec too short to hold this SG\n");
iser_data_buf_dump(data, ibdev);
iser_dump_page_vec(page_vec);
BUG();
}
}
int iser_dma_map_task_data(struct iscsi_iser_task *iser_task,
struct iser_data_buf *data,
enum iser_data_dir iser_dir,
@ -367,43 +342,44 @@ static int fall_to_bounce_buf(struct iscsi_iser_task *iser_task,
* returns: 0 on success, errno code on failure
*/
static
int iser_reg_page_vec(struct ib_conn *ib_conn,
int iser_reg_page_vec(struct iscsi_iser_task *iser_task,
struct iser_data_buf *mem,
struct iser_page_vec *page_vec,
struct iser_mem_reg *mem_reg)
struct iser_mem_reg *mem_reg)
{
struct ib_pool_fmr *mem;
u64 io_addr;
u64 *page_list;
int status;
struct ib_conn *ib_conn = &iser_task->iser_conn->ib_conn;
struct iser_device *device = ib_conn->device;
struct ib_pool_fmr *fmr;
int ret, plen;
page_list = page_vec->pages;
io_addr = page_list[0];
mem = ib_fmr_pool_map_phys(ib_conn->fmr.pool,
page_list,
page_vec->length,
io_addr);
if (IS_ERR(mem)) {
status = (int)PTR_ERR(mem);
iser_err("ib_fmr_pool_map_phys failed: %d\n", status);
return status;
plen = iser_sg_to_page_vec(mem, device->ib_device,
page_vec->pages,
&page_vec->offset,
&page_vec->data_size);
page_vec->length = plen;
if (plen * SIZE_4K < page_vec->data_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;
}
mem_reg->lkey = mem->fmr->lkey;
mem_reg->rkey = mem->fmr->rkey;
mem_reg->len = page_vec->data_size;
mem_reg->va = io_addr + page_vec->offset;
mem_reg->mem_h = (void *)mem;
fmr = ib_fmr_pool_map_phys(ib_conn->fmr.pool,
page_vec->pages,
page_vec->length,
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;
}
mem_reg->lkey = fmr->fmr->lkey;
mem_reg->rkey = fmr->fmr->rkey;
mem_reg->va = page_vec->pages[0] + page_vec->offset;
mem_reg->len = page_vec->data_size;
mem_reg->mem_h = fmr;
iser_dbg("PHYSICAL Mem.register, [PHYS p_array: 0x%p, sz: %d, "
"entry[0]: (0x%08lx,%ld)] -> "
"[lkey: 0x%08X mem_h: 0x%p va: 0x%08lX sz: %ld]\n",
page_vec, page_vec->length,
(unsigned long)page_vec->pages[0],
(unsigned long)page_vec->data_size,
(unsigned int)mem_reg->lkey, mem_reg->mem_h,
(unsigned long)mem_reg->va, (unsigned long)mem_reg->len);
return 0;
}
@ -493,8 +469,7 @@ int iser_reg_rdma_mem_fmr(struct iscsi_iser_task *iser_task,
(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,
err = iser_reg_page_vec(iser_task, mem, ib_conn->fmr.page_vec,
mem_reg);
if (err && err != -EAGAIN) {
iser_data_buf_dump(mem, ibdev);