diff options
Diffstat (limited to 'net/core/net-sysfs.c')
| -rw-r--r-- | net/core/net-sysfs.c | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c index 221a64ab64f7..b21307b15b82 100644 --- a/net/core/net-sysfs.c +++ b/net/core/net-sysfs.c @@ -412,20 +412,25 @@ static int netdev_uevent(struct device *d, char **envp, int num_envp, char *buf, int size) { struct net_device *dev = to_net_dev(d); - int i = 0; - int n; + int retval, len = 0, i = 0; /* pass interface to uevent. */ - envp[i++] = buf; - n = snprintf(buf, size, "INTERFACE=%s", dev->name) + 1; - buf += n; - size -= n; - - if ((size <= 0) || (i >= num_envp)) - return -ENOMEM; - + retval = add_uevent_var(envp, num_envp, &i, + buf, size, &len, + "INTERFACE=%s", dev->name); + if (retval) + goto exit; + + /* pass ifindex to uevent. + * ifindex is useful as it won't change (interface name may change) + * and is what RtNetlink uses natively. */ + retval = add_uevent_var(envp, num_envp, &i, + buf, size, &len, + "IFINDEX=%d", dev->ifindex); + +exit: envp[i] = NULL; - return 0; + return retval; } #endif |