From 9a6edb60ec10d86b1025a0cdad68fd89f1ddaf02 Mon Sep 17 00:00:00 2001 From: Ralph Campbell Date: Thu, 6 May 2010 17:03:25 -0700 Subject: [PATCH] IB/core: Allow device-specific per-port sysfs files Add a new parameter to ib_register_device() so that low-level device drivers can pass in a pointer to a callback function that will be called for each port that is registered in sysfs. This allows low-level device drivers to create files in /sys/class/infiniband//ports// without having to poke through the internals of the RDMA sysfs handling. There is no need for an unregister function since the kobject reference will go to zero when ib_unregister_device() is called. Signed-off-by: Ralph Campbell Signed-off-by: Roland Dreier --- drivers/infiniband/core/core_priv.h | 4 +++- drivers/infiniband/core/device.c | 6 ++++-- drivers/infiniband/core/sysfs.c | 21 ++++++++++++++++---- drivers/infiniband/hw/amso1100/c2_provider.c | 2 +- drivers/infiniband/hw/cxgb3/iwch_provider.c | 2 +- drivers/infiniband/hw/cxgb4/provider.c | 2 +- drivers/infiniband/hw/ehca/ehca_main.c | 2 +- drivers/infiniband/hw/ipath/ipath_verbs.c | 2 +- drivers/infiniband/hw/mlx4/main.c | 2 +- drivers/infiniband/hw/mthca/mthca_provider.c | 2 +- drivers/infiniband/hw/nes/nes_verbs.c | 2 +- include/rdma/ib_verbs.h | 4 +++- 12 files changed, 35 insertions(+), 16 deletions(-) diff --git a/drivers/infiniband/core/core_priv.h b/drivers/infiniband/core/core_priv.h index 05ac36e6acdb..a565af5c2d2e 100644 --- a/drivers/infiniband/core/core_priv.h +++ b/drivers/infiniband/core/core_priv.h @@ -38,7 +38,9 @@ #include -int ib_device_register_sysfs(struct ib_device *device); +int ib_device_register_sysfs(struct ib_device *device, + int (*port_callback)(struct ib_device *, + u8, struct kobject *)); void ib_device_unregister_sysfs(struct ib_device *device); int ib_sysfs_setup(void); diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c index d1fba4153332..a19effad0811 100644 --- a/drivers/infiniband/core/device.c +++ b/drivers/infiniband/core/device.c @@ -267,7 +267,9 @@ static int read_port_table_lengths(struct ib_device *device) * callback for each device that is added. @device must be allocated * with ib_alloc_device(). */ -int ib_register_device(struct ib_device *device) +int ib_register_device(struct ib_device *device, + int (*port_callback)(struct ib_device *, + u8, struct kobject *)) { int ret; @@ -296,7 +298,7 @@ int ib_register_device(struct ib_device *device) goto out; } - ret = ib_device_register_sysfs(device); + ret = ib_device_register_sysfs(device, port_callback); if (ret) { printk(KERN_WARNING "Couldn't register device %s with driver model\n", device->name); diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c index f901957abc8b..3627300e2a10 100644 --- a/drivers/infiniband/core/sysfs.c +++ b/drivers/infiniband/core/sysfs.c @@ -475,7 +475,9 @@ alloc_group_attrs(ssize_t (*show)(struct ib_port *, return NULL; } -static int add_port(struct ib_device *device, int port_num) +static int add_port(struct ib_device *device, int port_num, + int (*port_callback)(struct ib_device *, + u8, struct kobject *)) { struct ib_port *p; struct ib_port_attr attr; @@ -522,11 +524,20 @@ static int add_port(struct ib_device *device, int port_num) if (ret) goto err_free_pkey; + if (port_callback) { + ret = port_callback(device, port_num, &p->kobj); + if (ret) + goto err_remove_pkey; + } + list_add_tail(&p->kobj.entry, &device->port_list); kobject_uevent(&p->kobj, KOBJ_ADD); return 0; +err_remove_pkey: + sysfs_remove_group(&p->kobj, &p->pkey_group); + err_free_pkey: for (i = 0; i < attr.pkey_tbl_len; ++i) kfree(p->pkey_group.attrs[i]); @@ -754,7 +765,9 @@ static struct attribute_group iw_stats_group = { .attrs = iw_proto_stats_attrs, }; -int ib_device_register_sysfs(struct ib_device *device) +int ib_device_register_sysfs(struct ib_device *device, + int (*port_callback)(struct ib_device *, + u8, struct kobject *)) { struct device *class_dev = &device->dev; int ret; @@ -785,12 +798,12 @@ int ib_device_register_sysfs(struct ib_device *device) } if (device->node_type == RDMA_NODE_IB_SWITCH) { - ret = add_port(device, 0); + ret = add_port(device, 0, port_callback); if (ret) goto err_put; } else { for (i = 1; i <= device->phys_port_cnt; ++i) { - ret = add_port(device, i); + ret = add_port(device, i, port_callback); if (ret) goto err_put; } diff --git a/drivers/infiniband/hw/amso1100/c2_provider.c b/drivers/infiniband/hw/amso1100/c2_provider.c index c47f618d12e8..aeebc4d37e33 100644 --- a/drivers/infiniband/hw/amso1100/c2_provider.c +++ b/drivers/infiniband/hw/amso1100/c2_provider.c @@ -865,7 +865,7 @@ int c2_register_device(struct c2_dev *dev) dev->ibdev.iwcm->create_listen = c2_service_create; dev->ibdev.iwcm->destroy_listen = c2_service_destroy; - ret = ib_register_device(&dev->ibdev); + ret = ib_register_device(&dev->ibdev, NULL); if (ret) goto out_free_iwcm; diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c index 19b1c4a62a23..fca0b4b747e4 100644 --- a/drivers/infiniband/hw/cxgb3/iwch_provider.c +++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c @@ -1428,7 +1428,7 @@ int iwch_register_device(struct iwch_dev *dev) dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref; dev->ibdev.iwcm->get_qp = iwch_get_qp; - ret = ib_register_device(&dev->ibdev); + ret = ib_register_device(&dev->ibdev, NULL); if (ret) goto bail1; diff --git a/drivers/infiniband/hw/cxgb4/provider.c b/drivers/infiniband/hw/cxgb4/provider.c index dfc49020bb9c..cd3d6e2c7edf 100644 --- a/drivers/infiniband/hw/cxgb4/provider.c +++ b/drivers/infiniband/hw/cxgb4/provider.c @@ -486,7 +486,7 @@ int c4iw_register_device(struct c4iw_dev *dev) dev->ibdev.iwcm->rem_ref = c4iw_qp_rem_ref; dev->ibdev.iwcm->get_qp = c4iw_get_qp; - ret = ib_register_device(&dev->ibdev); + ret = ib_register_device(&dev->ibdev, NULL); if (ret) goto bail1; diff --git a/drivers/infiniband/hw/ehca/ehca_main.c b/drivers/infiniband/hw/ehca/ehca_main.c index 129a6bebd6e3..d1a92785c9ee 100644 --- a/drivers/infiniband/hw/ehca/ehca_main.c +++ b/drivers/infiniband/hw/ehca/ehca_main.c @@ -798,7 +798,7 @@ static int __devinit ehca_probe(struct of_device *dev, goto probe5; } - ret = ib_register_device(&shca->ib_device); + ret = ib_register_device(&shca->ib_device, NULL); if (ret) { ehca_err(&shca->ib_device, "ib_register_device() failed ret=%i", ret); diff --git a/drivers/infiniband/hw/ipath/ipath_verbs.c b/drivers/infiniband/hw/ipath/ipath_verbs.c index 559f39be0dcc..dd7f26d04d46 100644 --- a/drivers/infiniband/hw/ipath/ipath_verbs.c +++ b/drivers/infiniband/hw/ipath/ipath_verbs.c @@ -2182,7 +2182,7 @@ int ipath_register_ib_device(struct ipath_devdata *dd) snprintf(dev->node_desc, sizeof(dev->node_desc), IPATH_IDSTR " %s", init_utsname()->nodename); - ret = ib_register_device(dev); + ret = ib_register_device(dev, NULL); if (ret) goto err_reg; diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c index 39051417054c..4e94e360e43b 100644 --- a/drivers/infiniband/hw/mlx4/main.c +++ b/drivers/infiniband/hw/mlx4/main.c @@ -662,7 +662,7 @@ static void *mlx4_ib_add(struct mlx4_dev *dev) spin_lock_init(&ibdev->sm_lock); mutex_init(&ibdev->cap_mask_mutex); - if (ib_register_device(&ibdev->ib_dev)) + if (ib_register_device(&ibdev->ib_dev, NULL)) goto err_map; if (mlx4_ib_mad_init(ibdev)) diff --git a/drivers/infiniband/hw/mthca/mthca_provider.c b/drivers/infiniband/hw/mthca/mthca_provider.c index f080a784bc79..1e0b4b6074ad 100644 --- a/drivers/infiniband/hw/mthca/mthca_provider.c +++ b/drivers/infiniband/hw/mthca/mthca_provider.c @@ -1403,7 +1403,7 @@ int mthca_register_device(struct mthca_dev *dev) mutex_init(&dev->cap_mask_mutex); - ret = ib_register_device(&dev->ib_dev); + ret = ib_register_device(&dev->ib_dev, NULL); if (ret) return ret; diff --git a/drivers/infiniband/hw/nes/nes_verbs.c b/drivers/infiniband/hw/nes/nes_verbs.c index 925e1f2d1d55..9bc2d744b2ea 100644 --- a/drivers/infiniband/hw/nes/nes_verbs.c +++ b/drivers/infiniband/hw/nes/nes_verbs.c @@ -3962,7 +3962,7 @@ int nes_register_ofa_device(struct nes_ib_device *nesibdev) struct nes_adapter *nesadapter = nesdev->nesadapter; int i, ret; - ret = ib_register_device(&nesvnic->nesibdev->ibdev); + ret = ib_register_device(&nesvnic->nesibdev->ibdev, NULL); if (ret) { return ret; } diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 310d31474034..f3e8f3c07725 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -1172,7 +1172,9 @@ struct ib_client { struct ib_device *ib_alloc_device(size_t size); void ib_dealloc_device(struct ib_device *device); -int ib_register_device (struct ib_device *device); +int ib_register_device(struct ib_device *device, + int (*port_callback)(struct ib_device *, + u8, struct kobject *)); void ib_unregister_device(struct ib_device *device); int ib_register_client (struct ib_client *client); -- GitLab