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| author | Roopa Prabhu <roopa@cumulusnetworks.com> | 2017-11-13 23:21:36 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-11-14 22:03:21 +0900 |
| commit | c92eb77aff6a11c79059e2caffdd3baede218a9e (patch) | |
| tree | 57b2426e51d995829cd79e07f9fa2740b646ebf3 | |
| parent | 6dc14dc40a1d1dafd8491c349b5f3e15aabc4edb (diff) | |
| download | linux-c92eb77aff6a11c79059e2caffdd3baede218a9e.tar.bz2 | |
net-sysfs: trigger netlink notification on ifalias change via sysfs
This patch adds netlink notifications on iflias changes via sysfs.
makes it consistent with the netlink path which also calls
netdev_state_change. Also makes it consistent with other sysfs
netdev_store operations.
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/core/net-sysfs.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c index 51d5836d8fb9..799b75268291 100644 --- a/net/core/net-sysfs.c +++ b/net/core/net-sysfs.c @@ -382,7 +382,7 @@ static ssize_t ifalias_store(struct device *dev, struct device_attribute *attr, struct net_device *netdev = to_net_dev(dev); struct net *net = dev_net(netdev); size_t count = len; - ssize_t ret; + ssize_t ret = 0; if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) return -EPERM; @@ -391,9 +391,20 @@ static ssize_t ifalias_store(struct device *dev, struct device_attribute *attr, if (len > 0 && buf[len - 1] == '\n') --count; - ret = dev_set_alias(netdev, buf, count); + if (!rtnl_trylock()) + return restart_syscall(); + + if (dev_isalive(netdev)) { + ret = dev_set_alias(netdev, buf, count); + if (ret < 0) + goto err; + ret = len; + netdev_state_change(netdev); + } +err: + rtnl_unlock(); - return ret < 0 ? ret : len; + return ret; } static ssize_t ifalias_show(struct device *dev, |