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IB/isert: seperate connection protection domains and dma MRs

Browse source 
It is more correct to seperate connections protection domains
and dma_mr handles. protection information support requires to
do so.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Sagi Grimberg 2014-01-09 18:40:49 +02:00 committed by Nicholas Bellinger
parent 59dedde2b6
commit eb6ab13267
2 changed files with 24 additions and 24 deletions
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46
drivers/infiniband/ulp/isert/ib_isert.c
View file

@ -248,13 +248,6 @@ isert_create_device_ib_res(struct isert_device *device)
}
cq_desc = device->cq_desc;
device->dev_pd = ib_alloc_pd(ib_dev);
if (IS_ERR(device->dev_pd)) {
ret = PTR_ERR(device->dev_pd);
pr_err("ib_alloc_pd failed for dev_pd: %d\n", ret);
goto out_cq_desc;
}
for (i = 0; i < device->cqs_used; i++) {
cq_desc[i].device = device;
cq_desc[i].cq_index = i;
@ -282,13 +275,6 @@ isert_create_device_ib_res(struct isert_device *device)
goto out_cq;
}
device->dev_mr = ib_get_dma_mr(device->dev_pd, IB_ACCESS_LOCAL_WRITE);
if (IS_ERR(device->dev_mr)) {
ret = PTR_ERR(device->dev_mr);
pr_err("ib_get_dma_mr failed for dev_mr: %d\n", ret);
goto out_cq;
}
return 0;
out_cq:
@ -304,9 +290,6 @@ isert_create_device_ib_res(struct isert_device *device)
ib_destroy_cq(device->dev_tx_cq[j]);
}
}
ib_dealloc_pd(device->dev_pd);
out_cq_desc:
kfree(device->cq_desc);
return ret;
@ -329,8 +312,6 @@ isert_free_device_ib_res(struct isert_device *device)
device->dev_tx_cq[i] = NULL;
}
ib_dereg_mr(device->dev_mr);
ib_dealloc_pd(device->dev_pd);
kfree(device->cq_desc);
}
@ -437,7 +418,7 @@ isert_conn_create_frwr_pool(struct isert_conn *isert_conn)
goto err;
}
fr_desc->data_mr = ib_alloc_fast_reg_mr(device->dev_pd,
fr_desc->data_mr = ib_alloc_fast_reg_mr(isert_conn->conn_pd,
ISCSI_ISER_SG_TABLESIZE);
if (IS_ERR(fr_desc->data_mr)) {
pr_err("Failed to allocate frmr err=%ld\n",
@ -546,8 +527,22 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
}
isert_conn->conn_device = device;
isert_conn->conn_pd = device->dev_pd;
isert_conn->conn_mr = device->dev_mr;
isert_conn->conn_pd = ib_alloc_pd(isert_conn->conn_device->ib_device);
if (IS_ERR(isert_conn->conn_pd)) {
ret = PTR_ERR(isert_conn->conn_pd);
pr_err("ib_alloc_pd failed for conn %p: ret=%d\n",
isert_conn, ret);
goto out_pd;
}
isert_conn->conn_mr = ib_get_dma_mr(isert_conn->conn_pd,
IB_ACCESS_LOCAL_WRITE);
if (IS_ERR(isert_conn->conn_mr)) {
ret = PTR_ERR(isert_conn->conn_mr);
pr_err("ib_get_dma_mr failed for conn %p: ret=%d\n",
isert_conn, ret);
goto out_mr;
}
if (device->use_frwr) {
ret = isert_conn_create_frwr_pool(isert_conn);
@ -573,6 +568,10 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
if (device->use_frwr)
isert_conn_free_frwr_pool(isert_conn);
out_frwr:
ib_dereg_mr(isert_conn->conn_mr);
out_mr:
ib_dealloc_pd(isert_conn->conn_pd);
out_pd:
isert_device_try_release(device);
out_rsp_dma_map:
ib_dma_unmap_single(ib_dev, isert_conn->login_rsp_dma,
@ -611,6 +610,9 @@ isert_connect_release(struct isert_conn *isert_conn)
isert_free_rx_descriptors(isert_conn);
rdma_destroy_id(isert_conn->conn_cm_id);
ib_dereg_mr(isert_conn->conn_mr);
ib_dealloc_pd(isert_conn->conn_pd);
if (isert_conn->login_buf) {
ib_dma_unmap_single(ib_dev, isert_conn->login_rsp_dma,
ISER_RX_LOGIN_SIZE, DMA_TO_DEVICE);

2
drivers/infiniband/ulp/isert/ib_isert.h
View file

@ -144,8 +144,6 @@ struct isert_device {
int refcount;
int cq_active_qps[ISERT_MAX_CQ];
struct ib_device *ib_device;
struct ib_pd *dev_pd;
struct ib_mr *dev_mr;
struct ib_cq *dev_rx_cq[ISERT_MAX_CQ];
struct ib_cq *dev_tx_cq[ISERT_MAX_CQ];
struct isert_cq_desc *cq_desc;