diff options
| author | Sagi Grimberg <sagig@mellanox.com> | 2013-07-28 13:35:39 +0400 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2013-08-10 04:18:09 +0400 |
| commit | b4e155ffbbd65cba77207bc5522c7b734a5c8c9d (patch) | |
| tree | 8ab7e294205e558e71e0a028be63a8f33bdc6203 /drivers/infiniband/ulp/iser/iscsi_iser.h | |
| parent | b7f04513090cf12394de27588a1956d1f97188cb (diff) | |
| download | linux-b4e155ffbbd65cba77207bc5522c7b734a5c8c9d.tar.xz | |
IB/iser: Generalize rdma memory registration
Currently the driver uses FMRs as the only means to register the
memory pointed by SG provided by the SCSI mid-layer with the RDMA
device.
As preparation step for adding more methods for fast path memory
registration, make the alloc/free and reg/unreg calls function
pointers, which are for now just set to the existing FMR ones.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/ulp/iser/iscsi_iser.h')
| -rw-r--r-- | drivers/infiniband/ulp/iser/iscsi_iser.h | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.h b/drivers/infiniband/ulp/iser/iscsi_iser.h index d2fc55a15e95..78117be0c89e 100644 --- a/drivers/infiniband/ulp/iser/iscsi_iser.h +++ b/drivers/infiniband/ulp/iser/iscsi_iser.h @@ -252,6 +252,9 @@ struct iser_rx_desc { #define ISER_MAX_CQ 4 +struct iser_conn; +struct iscsi_iser_task; + struct iser_device { struct ib_device *ib_device; struct ib_pd *pd; @@ -265,6 +268,13 @@ struct iser_device { int cq_active_qps[ISER_MAX_CQ]; int cqs_used; struct iser_cq_desc *cq_desc; + int (*iser_alloc_rdma_reg_res)(struct iser_conn *ib_conn, + unsigned cmds_max); + void (*iser_free_rdma_reg_res)(struct iser_conn *ib_conn); + int (*iser_reg_rdma_mem)(struct iscsi_iser_task *iser_task, + enum iser_data_dir cmd_dir); + void (*iser_unreg_rdma_mem)(struct iscsi_iser_task *iser_task, + enum iser_data_dir cmd_dir); }; struct iser_conn { @@ -389,7 +399,8 @@ int iser_reg_page_vec(struct iser_conn *ib_conn, struct iser_page_vec *page_vec, struct iser_mem_reg *mem_reg); -void iser_unreg_mem(struct iser_mem_reg *mem_reg); +void iser_unreg_mem(struct iscsi_iser_task *iser_task, + enum iser_data_dir cmd_dir); int iser_post_recvl(struct iser_conn *ib_conn); int iser_post_recvm(struct iser_conn *ib_conn, int count); |