diff options
| -rw-r--r-- | drivers/infiniband/core/device.c | 125 | ||||
| -rw-r--r-- | include/rdma/ib_verbs.h | 8 |
2 files changed, 133 insertions, 0 deletions
diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c index 592c90aa318..b448e0b2b6b 100644 --- a/drivers/infiniband/core/device.c +++ b/drivers/infiniband/core/device.c @@ -149,6 +149,18 @@ static int alloc_name(char *name) return 0; } +static int start_port(struct ib_device *device) +{ + return (device->node_type == RDMA_NODE_IB_SWITCH) ? 0 : 1; +} + + +static int end_port(struct ib_device *device) +{ + return (device->node_type == RDMA_NODE_IB_SWITCH) ? + 0 : device->phys_port_cnt; +} + /** * ib_alloc_device - allocate an IB device struct * @size:size of structure to allocate @@ -208,6 +220,45 @@ static int add_client_context(struct ib_device *device, struct ib_client *client return 0; } +static int read_port_table_lengths(struct ib_device *device) +{ + struct ib_port_attr *tprops = NULL; + int num_ports, ret = -ENOMEM; + u8 port_index; + + tprops = kmalloc(sizeof *tprops, GFP_KERNEL); + if (!tprops) + goto out; + + num_ports = end_port(device) - start_port(device) + 1; + + device->pkey_tbl_len = kmalloc(sizeof *device->pkey_tbl_len * num_ports, + GFP_KERNEL); + device->gid_tbl_len = kmalloc(sizeof *device->gid_tbl_len * num_ports, + GFP_KERNEL); + if (!device->pkey_tbl_len || !device->gid_tbl_len) + goto err; + + for (port_index = 0; port_index < num_ports; ++port_index) { + ret = ib_query_port(device, port_index + start_port(device), + tprops); + if (ret) + goto err; + device->pkey_tbl_len[port_index] = tprops->pkey_tbl_len; + device->gid_tbl_len[port_index] = tprops->gid_tbl_len; + } + + ret = 0; + goto out; + +err: + kfree(device->gid_tbl_len); + kfree(device->pkey_tbl_len); +out: + kfree(tprops); + return ret; +} + /** * ib_register_device - Register an IB device with IB core * @device:Device to register @@ -239,10 +290,19 @@ int ib_register_device(struct ib_device *device) spin_lock_init(&device->event_handler_lock); spin_lock_init(&device->client_data_lock); + ret = read_port_table_lengths(device); + if (ret) { + printk(KERN_WARNING "Couldn't create table lengths cache for device %s\n", + device->name); + goto out; + } + ret = ib_device_register_sysfs(device); if (ret) { printk(KERN_WARNING "Couldn't register device %s with driver model\n", device->name); + kfree(device->gid_tbl_len); + kfree(device->pkey_tbl_len); goto out; } @@ -284,6 +344,9 @@ void ib_unregister_device(struct ib_device *device) list_del(&device->core_list); + kfree(device->gid_tbl_len); + kfree(device->pkey_tbl_len); + mutex_unlock(&device_mutex); spin_lock_irqsave(&device->client_data_lock, flags); @@ -592,6 +655,68 @@ int ib_modify_port(struct ib_device *device, } EXPORT_SYMBOL(ib_modify_port); +/** + * ib_find_gid - Returns the port number and GID table index where + * a specified GID value occurs. + * @device: The device to query. + * @gid: The GID value to search for. + * @port_num: The port number of the device where the GID value was found. + * @index: The index into the GID table where the GID was found. This + * parameter may be NULL. + */ +int ib_find_gid(struct ib_device *device, union ib_gid *gid, + u8 *port_num, u16 *index) +{ + union ib_gid tmp_gid; + int ret, port, i; + + for (port = start_port(device); port <= end_port(device); ++port) { + for (i = 0; i < device->gid_tbl_len[port - start_port(device)]; ++i) { + ret = ib_query_gid(device, port, i, &tmp_gid); + if (ret) + return ret; + if (!memcmp(&tmp_gid, gid, sizeof *gid)) { + *port_num = port; + if (index) + *index = i; + return 0; + } + } + } + + return -ENOENT; +} +EXPORT_SYMBOL(ib_find_gid); + +/** + * ib_find_pkey - Returns the PKey table index where a specified + * PKey value occurs. + * @device: The device to query. + * @port_num: The port number of the device to search for the PKey. + * @pkey: The PKey value to search for. + * @index: The index into the PKey table where the PKey was found. + */ +int ib_find_pkey(struct ib_device *device, + u8 port_num, u16 pkey, u16 *index) +{ + int ret, i; + u16 tmp_pkey; + + for (i = 0; i < device->pkey_tbl_len[port_num - start_port(device)]; ++i) { + ret = ib_query_pkey(device, port_num, i, &tmp_pkey); + if (ret) + return ret; + + if (pkey == tmp_pkey) { + *index = i; + return 0; + } + } + + return -ENOENT; +} +EXPORT_SYMBOL(ib_find_pkey); + static int __init ib_core_init(void) { int ret; diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 47cefca59c8..0627a6aa282 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -890,6 +890,8 @@ struct ib_device { spinlock_t client_data_lock; struct ib_cache cache; + int *pkey_tbl_len; + int *gid_tbl_len; u32 flags; @@ -1118,6 +1120,12 @@ int ib_modify_port(struct ib_device *device, u8 port_num, int port_modify_mask, struct ib_port_modify *port_modify); +int ib_find_gid(struct ib_device *device, union ib_gid *gid, + u8 *port_num, u16 *index); + +int ib_find_pkey(struct ib_device *device, + u8 port_num, u16 pkey, u16 *index); + /** * ib_alloc_pd - Allocates an unused protection domain. * @device: The device on which to allocate the protection domain. |