diff options
author | Sven Eckelmann <sven@narfation.org> | 2021-06-01 23:50:35 +0200 |
---|---|---|
committer | Simon Wunderlich <sw@simonwunderlich.de> | 2021-06-02 22:25:45 +0200 |
commit | fa205602d46e0b66c0c90672bce8b36e5de449df (patch) | |
tree | 6d788897d8f118e1f52ba53d67d2a57d8166b544 /net/batman-adv | |
parent | bf6b260b8a9654db99761cde74c6b16356b9b441 (diff) | |
download | linux-fa205602d46e0b66c0c90672bce8b36e5de449df.tar.bz2 |
batman-adv: Avoid name based attaching of hard interfaces
The sysfs code for the batman-adv/mesh_iface file was receiving a string of
the batadv interface. This interface name was then provided to the code
which shared sysfs+rtnetlink code for attaching an hard-interface to an
batadv interface. The rtnetlink code was also using the (extracted)
interface name from the ndo_add_slave callback to increase the shared code
- even when it would have been more efficient to use the provided
net_device object directly instead of searching it again (based on its
name) in batadv_hardif_enable_interface.
But this indirect handling is no longer necessary because the sysfs code
was dropped. There is now only a single code path which is using
batadv_hardif_enable_interface.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Diffstat (limited to 'net/batman-adv')
-rw-r--r-- | net/batman-adv/hard-interface.c | 14 | ||||
-rw-r--r-- | net/batman-adv/hard-interface.h | 3 | ||||
-rw-r--r-- | net/batman-adv/soft-interface.c | 3 |
3 files changed, 6 insertions, 14 deletions
diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c index a638f35598f0..81d201cc343d 100644 --- a/net/batman-adv/hard-interface.c +++ b/net/batman-adv/hard-interface.c @@ -705,16 +705,15 @@ static int batadv_master_del_slave(struct batadv_hard_iface *slave, /** * batadv_hardif_enable_interface() - Enslave hard interface to soft interface * @hard_iface: hard interface to add to soft interface - * @net: the applicable net namespace - * @iface_name: name of the soft interface + * @soft_iface: netdev struct of the mesh interface * * Return: 0 on success or negative error number in case of failure */ int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, - struct net *net, const char *iface_name) + struct net_device *soft_iface) { struct batadv_priv *bat_priv; - struct net_device *soft_iface, *master; + struct net_device *master; __be16 ethertype = htons(ETH_P_BATMAN); int max_header_len = batadv_max_header_len(); int ret; @@ -724,11 +723,7 @@ int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, kref_get(&hard_iface->refcount); - soft_iface = dev_get_by_name(net, iface_name); - if (!soft_iface) { - ret = -EINVAL; - goto err; - } + dev_hold(soft_iface); if (!batadv_softif_is_valid(soft_iface)) { pr_err("Can't create batman mesh interface %s: already exists as regular interface\n", @@ -802,7 +797,6 @@ err_upper: err_dev: hard_iface->soft_iface = NULL; dev_put(soft_iface); -err: batadv_hardif_put(hard_iface); return ret; } diff --git a/net/batman-adv/hard-interface.h b/net/batman-adv/hard-interface.h index 83d11b46a9d8..8cb2a1f10080 100644 --- a/net/batman-adv/hard-interface.h +++ b/net/batman-adv/hard-interface.h @@ -16,7 +16,6 @@ #include <linux/rcupdate.h> #include <linux/stddef.h> #include <linux/types.h> -#include <net/net_namespace.h> /** * enum batadv_hard_if_state - State of a hard interface @@ -75,7 +74,7 @@ bool batadv_is_wifi_hardif(struct batadv_hard_iface *hard_iface); struct batadv_hard_iface* batadv_hardif_get_by_netdev(const struct net_device *net_dev); int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, - struct net *net, const char *iface_name); + struct net_device *soft_iface); void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface); int batadv_hardif_min_mtu(struct net_device *soft_iface); void batadv_update_min_mtu(struct net_device *soft_iface); diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c index 0c5b34251a6d..ae368a42a4ad 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/soft-interface.c @@ -842,14 +842,13 @@ static int batadv_softif_slave_add(struct net_device *dev, struct netlink_ext_ack *extack) { struct batadv_hard_iface *hard_iface; - struct net *net = dev_net(dev); int ret = -EINVAL; hard_iface = batadv_hardif_get_by_netdev(slave_dev); if (!hard_iface || hard_iface->soft_iface) goto out; - ret = batadv_hardif_enable_interface(hard_iface, net, dev->name); + ret = batadv_hardif_enable_interface(hard_iface, dev); out: if (hard_iface) |