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| author | Sagi Grimberg <sagig@mellanox.com> | 2015-08-06 18:32:56 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2015-08-30 18:12:29 -0400 |
| commit | 48afbff673d3d2ff6c52342574392db504dae301 (patch) | |
| tree | fc843e2e795507108b1d3d6b149ad32da8c6db70 /drivers/infiniband/ulp/iser/iser_memory.c | |
| parent | 8c18ed03a95cb6c3543b0a9e0df5e9366baea5df (diff) | |
| download | linux-48afbff673d3d2ff6c52342574392db504dae301.tar.bz2 | |
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>
Diffstat (limited to 'drivers/infiniband/ulp/iser/iser_memory.c')
| -rw-r--r-- | drivers/infiniband/ulp/iser/iser_memory.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/infiniband/ulp/iser/iser_memory.c b/drivers/infiniband/ulp/iser/iser_memory.c index 710ac7d7ecf4..9febfc1e5e7c 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) { |