IB/iser: Introduce iser_reg_ops
Move all the per-device function pointers to an easy
extensible iser_reg_ops structure that contains all
the iser registration operations.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/drivers/infiniband/ulp/iser/iser_memory.c b/drivers/infiniband/ulp/iser/iser_memory.c
index 710ac7d..9febfc1 100644
--- a/drivers/infiniband/ulp/iser/iser_memory.c
+++ b/drivers/infiniband/ulp/iser/iser_memory.c
@@ -39,6 +39,41 @@
#include "iscsi_iser.h"
+static struct iser_reg_ops fastreg_ops = {
+ .alloc_reg_res = iser_alloc_fastreg_pool,
+ .free_reg_res = iser_free_fastreg_pool,
+ .reg_rdma_mem = iser_reg_rdma_mem_fastreg,
+ .unreg_rdma_mem = iser_unreg_mem_fastreg,
+};
+
+static struct iser_reg_ops fmr_ops = {
+ .alloc_reg_res = iser_alloc_fmr_pool,
+ .free_reg_res = iser_free_fmr_pool,
+ .reg_rdma_mem = iser_reg_rdma_mem_fmr,
+ .unreg_rdma_mem = iser_unreg_mem_fmr,
+};
+
+int iser_assign_reg_ops(struct iser_device *device)
+{
+ struct ib_device_attr *dev_attr = &device->dev_attr;
+
+ /* Assign function handles - based on FMR support */
+ if (device->ib_device->alloc_fmr && device->ib_device->dealloc_fmr &&
+ device->ib_device->map_phys_fmr && device->ib_device->unmap_fmr) {
+ iser_info("FMR supported, using FMR for registration\n");
+ device->reg_ops = &fmr_ops;
+ } else
+ if (dev_attr->device_cap_flags & IB_DEVICE_MEM_MGT_EXTENSIONS) {
+ iser_info("FastReg supported, using FastReg for registration\n");
+ device->reg_ops = &fastreg_ops;
+ } else {
+ iser_err("IB device does not support FMRs nor FastRegs, can't register memory\n");
+ return -1;
+ }
+
+ return 0;
+}
+
static void
iser_free_bounce_sg(struct iser_data_buf *data)
{