diff options
Diffstat (limited to 'net/batman-adv/hard-interface.c')
| -rw-r--r-- | net/batman-adv/hard-interface.c | 65 |
1 files changed, 50 insertions, 15 deletions
diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c index 4e3d5340ad96..13d04dba0b3a 100644 --- a/net/batman-adv/hard-interface.c +++ b/net/batman-adv/hard-interface.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich @@ -22,7 +23,7 @@ #include <linux/bug.h> #include <linux/byteorder/generic.h> #include <linux/errno.h> -#include <linux/fs.h> +#include <linux/gfp.h> #include <linux/if.h> #include <linux/if_arp.h> #include <linux/if_ether.h> @@ -52,7 +53,7 @@ #include "translation-table.h" /** - * batadv_hardif_release - release hard interface from lists and queue for + * batadv_hardif_release() - release hard interface from lists and queue for * free after rcu grace period * @ref: kref pointer of the hard interface */ @@ -66,6 +67,12 @@ void batadv_hardif_release(struct kref *ref) kfree_rcu(hard_iface, rcu); } +/** + * batadv_hardif_get_by_netdev() - Get hard interface object of a net_device + * @net_dev: net_device to search for + * + * Return: batadv_hard_iface of net_dev (with increased refcnt), NULL on errors + */ struct batadv_hard_iface * batadv_hardif_get_by_netdev(const struct net_device *net_dev) { @@ -86,7 +93,7 @@ out: } /** - * batadv_getlink_net - return link net namespace (of use fallback) + * batadv_getlink_net() - return link net namespace (of use fallback) * @netdev: net_device to check * @fallback_net: return in case get_link_net is not available for @netdev * @@ -105,7 +112,7 @@ static struct net *batadv_getlink_net(const struct net_device *netdev, } /** - * batadv_mutual_parents - check if two devices are each others parent + * batadv_mutual_parents() - check if two devices are each others parent * @dev1: 1st net dev * @net1: 1st devices netns * @dev2: 2nd net dev @@ -138,7 +145,7 @@ static bool batadv_mutual_parents(const struct net_device *dev1, } /** - * batadv_is_on_batman_iface - check if a device is a batman iface descendant + * batadv_is_on_batman_iface() - check if a device is a batman iface descendant * @net_dev: the device to check * * If the user creates any virtual device on top of a batman-adv interface, it @@ -202,7 +209,7 @@ static bool batadv_is_valid_iface(const struct net_device *net_dev) } /** - * batadv_get_real_netdevice - check if the given netdev struct is a virtual + * batadv_get_real_netdevice() - check if the given netdev struct is a virtual * interface on top of another 'real' interface * @netdev: the device to check * @@ -246,7 +253,7 @@ out: } /** - * batadv_get_real_netdev - check if the given net_device struct is a virtual + * batadv_get_real_netdev() - check if the given net_device struct is a virtual * interface on top of another 'real' interface * @net_device: the device to check * @@ -265,7 +272,7 @@ struct net_device *batadv_get_real_netdev(struct net_device *net_device) } /** - * batadv_is_wext_netdev - check if the given net_device struct is a + * batadv_is_wext_netdev() - check if the given net_device struct is a * wext wifi interface * @net_device: the device to check * @@ -289,7 +296,7 @@ static bool batadv_is_wext_netdev(struct net_device *net_device) } /** - * batadv_is_cfg80211_netdev - check if the given net_device struct is a + * batadv_is_cfg80211_netdev() - check if the given net_device struct is a * cfg80211 wifi interface * @net_device: the device to check * @@ -309,7 +316,7 @@ static bool batadv_is_cfg80211_netdev(struct net_device *net_device) } /** - * batadv_wifi_flags_evaluate - calculate wifi flags for net_device + * batadv_wifi_flags_evaluate() - calculate wifi flags for net_device * @net_device: the device to check * * Return: batadv_hard_iface_wifi_flags flags of the device @@ -344,7 +351,7 @@ out: } /** - * batadv_is_cfg80211_hardif - check if the given hardif is a cfg80211 wifi + * batadv_is_cfg80211_hardif() - check if the given hardif is a cfg80211 wifi * interface * @hard_iface: the device to check * @@ -362,7 +369,7 @@ bool batadv_is_cfg80211_hardif(struct batadv_hard_iface *hard_iface) } /** - * batadv_is_wifi_hardif - check if the given hardif is a wifi interface + * batadv_is_wifi_hardif() - check if the given hardif is a wifi interface * @hard_iface: the device to check * * Return: true if the net device is a 802.11 wireless device, false otherwise. @@ -376,7 +383,7 @@ bool batadv_is_wifi_hardif(struct batadv_hard_iface *hard_iface) } /** - * batadv_hardif_no_broadcast - check whether (re)broadcast is necessary + * batadv_hardif_no_broadcast() - check whether (re)broadcast is necessary * @if_outgoing: the outgoing interface checked and considered for (re)broadcast * @orig_addr: the originator of this packet * @orig_neigh: originator address of the forwarder we just got the packet from @@ -560,6 +567,13 @@ static void batadv_hardif_recalc_extra_skbroom(struct net_device *soft_iface) soft_iface->needed_tailroom = lower_tailroom; } +/** + * batadv_hardif_min_mtu() - Calculate maximum MTU for soft interface + * @soft_iface: netdev struct of the soft interface + * + * Return: MTU for the soft-interface (limited by the minimal MTU of all active + * slave interfaces) + */ int batadv_hardif_min_mtu(struct net_device *soft_iface) { struct batadv_priv *bat_priv = netdev_priv(soft_iface); @@ -606,7 +620,11 @@ out: return min_t(int, min_mtu - batadv_max_header_len(), ETH_DATA_LEN); } -/* adjusts the MTU if a new interface with a smaller MTU appeared. */ +/** + * batadv_update_min_mtu() - Adjusts the MTU if a new interface with a smaller + * MTU appeared + * @soft_iface: netdev struct of the soft interface + */ void batadv_update_min_mtu(struct net_device *soft_iface) { soft_iface->mtu = batadv_hardif_min_mtu(soft_iface); @@ -667,7 +685,7 @@ batadv_hardif_deactivate_interface(struct batadv_hard_iface *hard_iface) } /** - * batadv_master_del_slave - remove hard_iface from the current master interface + * batadv_master_del_slave() - remove hard_iface from the current master iface * @slave: the interface enslaved in another master * @master: the master from which slave has to be removed * @@ -691,6 +709,14 @@ static int batadv_master_del_slave(struct batadv_hard_iface *slave, return ret; } +/** + * 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 + * + * 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) { @@ -802,6 +828,12 @@ err: return ret; } +/** + * batadv_hardif_disable_interface() - Remove hard interface from soft interface + * @hard_iface: hard interface to be removed + * @autodel: whether to delete soft interface when it doesn't contain any other + * slave interfaces + */ void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface, enum batadv_hard_if_cleanup autodel) { @@ -936,6 +968,9 @@ static void batadv_hardif_remove_interface(struct batadv_hard_iface *hard_iface) batadv_hardif_put(hard_iface); } +/** + * batadv_hardif_remove_interfaces() - Remove all hard interfaces + */ void batadv_hardif_remove_interfaces(void) { struct batadv_hard_iface *hard_iface, *hard_iface_tmp; 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