From mboxrd@z Thu Jan 1 00:00:00 1970 From: Leon Romanovsky Subject: [PATCH rdma-next 4/5] RDMA/core: Implement IB device rename function Date: Thu, 20 Sep 2018 14:22:01 +0300 Message-ID: <20180920112202.9181-5-leon@kernel.org> References: <20180920112202.9181-1-leon@kernel.org> Cc: Leon Romanovsky , RDMA mailing list , linux-s390@vger.kernel.org, Ursula Braun , "David S. Miller" , netdev@vger.kernel.org, Selvin Xavier , Steve Wise , Lijun Ou , Shiraz Saleem , Ariel Elior , Christian Benvenuti , Adit Ranadive , Dennis Dalessandro To: Doug Ledford , Jason Gunthorpe Return-path: Received: from mail.kernel.org ([198.145.29.99]:58642 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732502AbeITRFR (ORCPT ); Thu, 20 Sep 2018 13:05:17 -0400 In-Reply-To: <20180920112202.9181-1-leon@kernel.org> Sender: netdev-owner@vger.kernel.org List-ID: From: Leon Romanovsky Generic implementation of IB device rename function. Signed-off-by: Leon Romanovsky --- drivers/infiniband/core/core_priv.h | 1 + drivers/infiniband/core/device.c | 23 +++++++++++++++++++++++ 2 files changed, 24 insertions(+) diff --git a/drivers/infiniband/core/core_priv.h b/drivers/infiniband/core/core_priv.h index d7399d5b1cb6..c5881756b799 100644 --- a/drivers/infiniband/core/core_priv.h +++ b/drivers/infiniband/core/core_priv.h @@ -87,6 +87,7 @@ 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_device_rename(struct ib_device *ibdev, const char *name); typedef void (*roce_netdev_callback)(struct ib_device *device, u8 port, struct net_device *idev, void *cookie); diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c index a9bc2a3f490c..36b79cd6b620 100644 --- a/drivers/infiniband/core/device.c +++ b/drivers/infiniband/core/device.c @@ -178,6 +178,29 @@ void ib_device_get_name(struct ib_device *ibdev, char *name) } EXPORT_SYMBOL(ib_device_get_name); +int ib_device_rename(struct ib_device *ibdev, const char *name) +{ + struct ib_device *device; + int ret = 0; + + if (!strcmp(name, ibdev->name)) + return ret; + + mutex_lock(&device_mutex); + list_for_each_entry(device, &device_list, core_list) { + if (!strcmp(name, device->name)) { + ret = -EEXIST; + goto out; + } + } + + strlcpy(ibdev->name, name, IB_DEVICE_NAME_MAX); + ret = device_rename(&ibdev->dev, name); +out: + mutex_unlock(&device_mutex); + return ret; +} + static int alloc_name(char *name) { unsigned long *inuse;