From 172369c5703861ca54ec1dcd2708ad75e1ec171a Mon Sep 17 00:00:00 2001 From: Sagi Grimberg Date: Sun, 29 Mar 2015 15:52:11 +0300 Subject: iser-target: Introduce isert_[alloc|free]_comps Move the code for completion context handling to dedicated routines. This simplifies the code and removes code duplication. Signed-off-by: Sagi Grimberg Signed-off-by: Nicholas Bellinger --- drivers/infiniband/ulp/isert/ib_isert.c | 106 ++++++++++++++++++-------------- 1 file changed, 60 insertions(+), 46 deletions(-) (limited to 'drivers/infiniband') diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c index 2a4a435fc516..db5460ad12f3 100644 --- a/drivers/infiniband/ulp/isert/ib_isert.c +++ b/drivers/infiniband/ulp/isert/ib_isert.c @@ -275,39 +275,31 @@ isert_free_rx_descriptors(struct isert_conn *isert_conn) static void isert_cq_work(struct work_struct *); static void isert_cq_callback(struct ib_cq *, void *); -static int -isert_create_device_ib_res(struct isert_device *device) +static void +isert_free_comps(struct isert_device *device) { - struct ib_device *ib_dev = device->ib_device; - struct ib_device_attr *dev_attr; - int ret = 0, i; - int max_cqe; - - dev_attr = &device->dev_attr; - ret = isert_query_device(ib_dev, dev_attr); - if (ret) - return ret; + int i; - max_cqe = min(ISER_MAX_CQ_LEN, dev_attr->max_cqe); + for (i = 0; i < device->comps_used; i++) { + struct isert_comp *comp = &device->comps[i]; - /* asign function handlers */ - if (dev_attr->device_cap_flags & IB_DEVICE_MEM_MGT_EXTENSIONS && - dev_attr->device_cap_flags & IB_DEVICE_SIGNATURE_HANDOVER) { - device->use_fastreg = 1; - device->reg_rdma_mem = isert_reg_rdma; - device->unreg_rdma_mem = isert_unreg_rdma; - } else { - device->use_fastreg = 0; - device->reg_rdma_mem = isert_map_rdma; - device->unreg_rdma_mem = isert_unmap_cmd; + if (comp->cq) { + cancel_work_sync(&comp->work); + ib_destroy_cq(comp->cq); + } } + kfree(device->comps); +} - /* Check signature cap */ - device->pi_capable = dev_attr->device_cap_flags & - IB_DEVICE_SIGNATURE_HANDOVER ? true : false; +static int +isert_alloc_comps(struct isert_device *device, + struct ib_device_attr *attr) +{ + int i, max_cqe, ret = 0; device->comps_used = min(ISERT_MAX_CQ, min_t(int, num_online_cpus(), - device->ib_device->num_comp_vectors)); + device->ib_device->num_comp_vectors)); + isert_info("Using %d CQs, %s supports %d vectors support " "Fast registration %d pi_capable %d\n", device->comps_used, device->ib_device->name, @@ -321,6 +313,8 @@ isert_create_device_ib_res(struct isert_device *device) return -ENOMEM; } + max_cqe = min(ISER_MAX_CQ_LEN, attr->max_cqe); + for (i = 0; i < device->comps_used; i++) { struct isert_comp *comp = &device->comps[i]; @@ -332,6 +326,7 @@ isert_create_device_ib_res(struct isert_device *device) (void *)comp, max_cqe, i); if (IS_ERR(comp->cq)) { + isert_err("Unable to allocate cq\n"); ret = PTR_ERR(comp->cq); comp->cq = NULL; goto out_cq; @@ -342,6 +337,40 @@ isert_create_device_ib_res(struct isert_device *device) goto out_cq; } + return 0; +out_cq: + isert_free_comps(device); + return ret; +} + +static int +isert_create_device_ib_res(struct isert_device *device) +{ + struct ib_device *ib_dev = device->ib_device; + struct ib_device_attr *dev_attr; + int ret = 0; + + dev_attr = &device->dev_attr; + ret = isert_query_device(ib_dev, dev_attr); + if (ret) + return ret; + + /* asign function handlers */ + if (dev_attr->device_cap_flags & IB_DEVICE_MEM_MGT_EXTENSIONS && + dev_attr->device_cap_flags & IB_DEVICE_SIGNATURE_HANDOVER) { + device->use_fastreg = 1; + device->reg_rdma_mem = isert_reg_rdma; + device->unreg_rdma_mem = isert_unreg_rdma; + } else { + device->use_fastreg = 0; + device->reg_rdma_mem = isert_map_rdma; + device->unreg_rdma_mem = isert_unmap_cmd; + } + + ret = isert_alloc_comps(device, dev_attr); + if (ret) + return ret; + device->pd = ib_alloc_pd(device->ib_device); if (IS_ERR(device->pd)) { ret = PTR_ERR(device->pd); @@ -358,42 +387,27 @@ isert_create_device_ib_res(struct isert_device *device) goto out_mr; } + /* Check signature cap */ + device->pi_capable = dev_attr->device_cap_flags & + IB_DEVICE_SIGNATURE_HANDOVER ? true : false; return 0; out_mr: ib_dealloc_pd(device->pd); out_cq: - for (i = 0; i < device->comps_used; i++) { - struct isert_comp *comp = &device->comps[i]; - - if (comp->cq) { - cancel_work_sync(&comp->work); - ib_destroy_cq(comp->cq); - } - } - kfree(device->comps); - + isert_free_comps(device); return ret; } static void isert_free_device_ib_res(struct isert_device *device) { - int i; - isert_info("device %p\n", device); ib_dereg_mr(device->mr); ib_dealloc_pd(device->pd); - for (i = 0; i < device->comps_used; i++) { - struct isert_comp *comp = &device->comps[i]; - - cancel_work_sync(&comp->work); - ib_destroy_cq(comp->cq); - comp->cq = NULL; - } - kfree(device->comps); + isert_free_comps(device); } static void -- cgit v1.2.3