[B.A.T.M.A.N.] [PATCH 19/23] batman-adv: Convert batadv_hard_iface to kref

So switch to kref instead of using the self-made, atomic_t-based implementation.

Signed-off-by: Sven Eckelmann sven@narfation.org --- net/batman-adv/bat_iv_ogm.c | 14 +++++------ net/batman-adv/bridge_loop_avoidance.c | 18 +++++++------- net/batman-adv/distributed-arp-table.c | 2 +- net/batman-adv/fragmentation.c | 2 +- net/batman-adv/gateway_client.c | 2 +- net/batman-adv/hard-interface.c | 45 ++++++++++++++++++++-------------- net/batman-adv/hard-interface.h | 15 +++++------- net/batman-adv/icmp_socket.c | 2 +- net/batman-adv/main.c | 2 +- net/batman-adv/network-coding.c | 2 +- net/batman-adv/originator.c | 24 +++++++++--------- net/batman-adv/routing.c | 8 +++--- net/batman-adv/send.c | 8 +++--- net/batman-adv/soft-interface.c | 6 ++--- net/batman-adv/sysfs.c | 8 +++--- net/batman-adv/translation-table.c | 10 ++++---- net/batman-adv/types.h | 2 +- 17 files changed, 88 insertions(+), 82 deletions(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index 7d61afb..95399c9 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -513,7 +513,7 @@ static void batadv_iv_ogm_emit(struct batadv_forw_packet *forw_packet)

out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); }

/** @@ -615,7 +615,7 @@ batadv_iv_ogm_can_aggregate(const struct batadv_ogm_packet *new_bat_ogm_packet,

out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); return res; }

@@ -642,10 +642,10 @@ static void batadv_iv_ogm_aggregate_new(const unsigned char *packet_buff, unsigned char *skb_buff; unsigned int skb_size;

- if (!atomic_inc_not_zero(&if_incoming->refcount)) + if (!kref_get_unless_zero(&if_incoming->refcount)) return;

- if (!atomic_inc_not_zero(&if_outgoing->refcount)) + if (!kref_get_unless_zero(&if_outgoing->refcount)) goto out_free_incoming;

/* own packet should always be scheduled */ @@ -709,9 +709,9 @@ out_nomem: if (!own_packet) atomic_inc(&bat_priv->batman_queue_left); out_free_outgoing: - batadv_hardif_free_ref(if_outgoing); + batadv_hardif_put(if_outgoing); out_free_incoming: - batadv_hardif_free_ref(if_incoming); + batadv_hardif_put(if_incoming); }

/* aggregate a new packet into the existing ogm packet */ @@ -956,7 +956,7 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface)

out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); }

/** diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c index 3315b27..e58bc6c 100644 --- a/net/batman-adv/bridge_loop_avoidance.c +++ b/net/batman-adv/bridge_loop_avoidance.c @@ -423,7 +423,7 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, u8 *mac, netif_rx(skb); out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); }

/** @@ -1281,7 +1281,7 @@ void batadv_bla_status_update(struct net_device *net_dev) * so just call that one. */ batadv_bla_update_orig_address(bat_priv, primary_if, primary_if); - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); }

/** @@ -1355,7 +1355,7 @@ static void batadv_bla_periodic_work(struct work_struct *work) } out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if);

queue_delayed_work(batadv_event_workqueue, &bat_priv->bla.work, msecs_to_jiffies(BATADV_BLA_PERIOD_LENGTH)); @@ -1394,7 +1394,7 @@ int batadv_bla_init(struct batadv_priv *bat_priv) if (primary_if) { crc = crc16(0, primary_if->net_dev->dev_addr, ETH_ALEN); bat_priv->bla.claim_dest.group = htons(crc); - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); } else { bat_priv->bla.claim_dest.group = 0; /* will be set later */ } @@ -1598,7 +1598,7 @@ void batadv_bla_free(struct batadv_priv *bat_priv) bat_priv->bla.backbone_hash = NULL; } if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); }

/** @@ -1691,7 +1691,7 @@ handled:

out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); if (claim) batadv_claim_put(claim); return ret; @@ -1780,7 +1780,7 @@ handled: ret = 1; out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); if (claim) batadv_claim_put(claim); return ret; @@ -1838,7 +1838,7 @@ int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset) } out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); return 0; }

@@ -1903,6 +1903,6 @@ int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq, void *offset) } out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); return 0; } diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c index fa605c3..782e80a 100644 --- a/net/batman-adv/distributed-arp-table.c +++ b/net/batman-adv/distributed-arp-table.c @@ -840,7 +840,7 @@ int batadv_dat_cache_seq_print_text(struct seq_file *seq, void *offset)

out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); return 0; }

diff --git a/net/batman-adv/fragmentation.c b/net/batman-adv/fragmentation.c index 87b127c..69edc0b 100644 --- a/net/batman-adv/fragmentation.c +++ b/net/batman-adv/fragmentation.c @@ -512,7 +512,7 @@ bool batadv_frag_send_packet(struct sk_buff *skb,

out_err: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if);

return ret; } diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c index a5b92ef..33ddd7d 100644 --- a/net/batman-adv/gateway_client.c +++ b/net/batman-adv/gateway_client.c @@ -661,7 +661,7 @@ int batadv_gw_client_seq_print_text(struct seq_file *seq, void *offset)

out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); return 0; }

diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c index 49e05d2..de8e54b 100644 --- a/net/batman-adv/hard-interface.c +++ b/net/batman-adv/hard-interface.c @@ -18,6 +18,7 @@ #include "hard-interface.h" #include "main.h"

+#include <linux/atomic.h> #include <linux/bug.h> #include <linux/byteorder/generic.h> #include <linux/errno.h> @@ -26,6 +27,7 @@ #include <linux/if_ether.h> #include <linux/if.h> #include <linux/kernel.h> +#include <linux/kref.h> #include <linux/list.h> #include <linux/netdevice.h> #include <linux/printk.h> @@ -47,13 +49,19 @@ #include "sysfs.h" #include "translation-table.h"

-void batadv_hardif_free_rcu(struct rcu_head *rcu) +/** + * batadv_hardif_release - release hard interface from lists and queue for + * free after rcu grace period + * @ref: kref pointer of the hard interface + */ +void batadv_hardif_release(struct kref *ref) { struct batadv_hard_iface *hard_iface;

- hard_iface = container_of(rcu, struct batadv_hard_iface, rcu); + hard_iface = container_of(ref, struct batadv_hard_iface, refcount); dev_put(hard_iface->net_dev); - kfree(hard_iface); + + kfree_rcu(hard_iface, rcu); }

struct batadv_hard_iface * @@ -64,7 +72,7 @@ batadv_hardif_get_by_netdev(const struct net_device *net_dev) rcu_read_lock(); list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { if (hard_iface->net_dev == net_dev && - atomic_inc_not_zero(&hard_iface->refcount)) + kref_get_unless_zero(&hard_iface->refcount)) goto out; }

@@ -169,7 +177,7 @@ batadv_hardif_get_active(const struct net_device *soft_iface) continue;

if (hard_iface->if_status == BATADV_IF_ACTIVE && - atomic_inc_not_zero(&hard_iface->refcount)) + kref_get_unless_zero(&hard_iface->refcount)) goto out; }

@@ -193,7 +201,7 @@ static void batadv_primary_if_update_addr(struct batadv_priv *bat_priv, batadv_bla_update_orig_address(bat_priv, primary_if, oldif); out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); }

static void batadv_primary_if_select(struct batadv_priv *bat_priv, @@ -203,7 +211,7 @@ static void batadv_primary_if_select(struct batadv_priv *bat_priv,

ASSERT_RTNL();

- if (new_hard_iface && !atomic_inc_not_zero(&new_hard_iface->refcount)) + if (new_hard_iface && !kref_get_unless_zero(&new_hard_iface->refcount)) new_hard_iface = NULL;

curr_hard_iface = rcu_dereference_protected(bat_priv->primary_if, 1); @@ -217,7 +225,7 @@ static void batadv_primary_if_select(struct batadv_priv *bat_priv,

out: if (curr_hard_iface) - batadv_hardif_free_ref(curr_hard_iface); + batadv_hardif_put(curr_hard_iface); }

static bool @@ -376,7 +384,7 @@ batadv_hardif_activate_interface(struct batadv_hard_iface *hard_iface)

out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); }

static void @@ -431,7 +439,7 @@ int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, if (hard_iface->if_status != BATADV_IF_NOT_IN_USE) goto out;

- if (!atomic_inc_not_zero(&hard_iface->refcount)) + if (!kref_get_unless_zero(&hard_iface->refcount)) goto out;

soft_iface = dev_get_by_name(&init_net, iface_name); @@ -529,7 +537,7 @@ err_dev: hard_iface->soft_iface = NULL; dev_put(soft_iface); err: - batadv_hardif_free_ref(hard_iface); + batadv_hardif_put(hard_iface); return ret; }

@@ -560,7 +568,7 @@ void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface, batadv_primary_if_select(bat_priv, new_if);

if (new_if) - batadv_hardif_free_ref(new_if); + batadv_hardif_put(new_if); }

bat_priv->bat_algo_ops->bat_iface_disable(hard_iface); @@ -583,11 +591,11 @@ void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface, }

hard_iface->soft_iface = NULL; - batadv_hardif_free_ref(hard_iface); + batadv_hardif_put(hard_iface);

out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); }

/** @@ -606,7 +614,7 @@ static void batadv_hardif_remove_interface_finish(struct work_struct *work)

batadv_debugfs_del_hardif(hard_iface); batadv_sysfs_del_hardif(&hard_iface->hardif_obj); - batadv_hardif_free_ref(hard_iface); + batadv_hardif_put(hard_iface); }

static struct batadv_hard_iface * @@ -652,7 +660,8 @@ batadv_hardif_add_interface(struct net_device *net_dev) hard_iface->num_bcasts = BATADV_NUM_BCASTS_WIRELESS;

/* extra reference for return */ - atomic_set(&hard_iface->refcount, 2); + kref_init(&hard_iface->refcount); + kref_get(&hard_iface->refcount);

batadv_check_known_mac_addr(hard_iface->net_dev); list_add_tail_rcu(&hard_iface->list, &batadv_hardif_list); @@ -760,10 +769,10 @@ static int batadv_hard_if_event(struct notifier_block *this, }

hardif_put: - batadv_hardif_free_ref(hard_iface); + batadv_hardif_put(hard_iface); out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); return NOTIFY_DONE; }

diff --git a/net/batman-adv/hard-interface.h b/net/batman-adv/hard-interface.h index 7b12ea8..16a6aec 100644 --- a/net/batman-adv/hard-interface.h +++ b/net/batman-adv/hard-interface.h @@ -20,8 +20,8 @@

#include "main.h"

-#include <linux/atomic.h> #include <linux/compiler.h> +#include <linux/kref.h> #include <linux/notifier.h> #include <linux/rcupdate.h> #include <linux/stddef.h> @@ -61,18 +61,15 @@ void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface, void batadv_hardif_remove_interfaces(void); int batadv_hardif_min_mtu(struct net_device *soft_iface); void batadv_update_min_mtu(struct net_device *soft_iface); -void batadv_hardif_free_rcu(struct rcu_head *rcu); +void batadv_hardif_release(struct kref *ref);

/** - * batadv_hardif_free_ref - decrement the hard interface refcounter and - * possibly free it + * batadv_hardif_put - decrement the hard interface refcounter and possibly free * @hard_iface: the hard interface to free */ -static inline void -batadv_hardif_free_ref(struct batadv_hard_iface *hard_iface) +static inline void batadv_hardif_put(struct batadv_hard_iface *hard_iface) { - if (atomic_dec_and_test(&hard_iface->refcount)) - call_rcu(&hard_iface->rcu, batadv_hardif_free_rcu); + kref_put(&hard_iface->refcount, batadv_hardif_release); }

static inline struct batadv_hard_iface * @@ -85,7 +82,7 @@ batadv_primary_if_get_selected(struct batadv_priv *bat_priv) if (!hard_iface) goto out;

- if (!atomic_inc_not_zero(&hard_iface->refcount)) + if (!kref_get_unless_zero(&hard_iface->refcount)) hard_iface = NULL;

out: diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c index d6574cb..27be960 100644 --- a/net/batman-adv/icmp_socket.c +++ b/net/batman-adv/icmp_socket.c @@ -288,7 +288,7 @@ free_skb: kfree_skb(skb); out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); if (neigh_node) batadv_neigh_node_put(neigh_node); if (orig_node) diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c index eee2d82..33ac461 100644 --- a/net/batman-adv/main.c +++ b/net/batman-adv/main.c @@ -287,7 +287,7 @@ batadv_seq_print_text_primary_if_get(struct seq_file *seq) seq_printf(seq, "BATMAN mesh %s disabled - primary interface not active\n", net_dev->name); - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); primary_if = NULL;

out: diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c index 41f0c2c..96e1390 100644 --- a/net/batman-adv/network-coding.c +++ b/net/batman-adv/network-coding.c @@ -1950,7 +1950,7 @@ int batadv_nc_nodes_seq_print_text(struct seq_file *seq, void *offset)

out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); return 0; }

diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c index 1f10658..a6eac81 100644 --- a/net/batman-adv/originator.c +++ b/net/batman-adv/originator.c @@ -181,7 +181,7 @@ static void batadv_neigh_ifinfo_release(struct kref *ref) neigh_ifinfo = container_of(ref, struct batadv_neigh_ifinfo, refcount);

if (neigh_ifinfo->if_outgoing != BATADV_IF_DEFAULT) - batadv_hardif_free_ref(neigh_ifinfo->if_outgoing); + batadv_hardif_put(neigh_ifinfo->if_outgoing);

kfree_rcu(neigh_ifinfo, rcu); } @@ -212,7 +212,7 @@ static void batadv_hardif_neigh_release(struct kref *ref) hlist_del_init_rcu(&hardif_neigh->list); spin_unlock_bh(&hardif_neigh->if_incoming->neigh_list_lock);

- batadv_hardif_free_ref(hardif_neigh->if_incoming); + batadv_hardif_put(hardif_neigh->if_incoming); kfree_rcu(hardif_neigh, rcu); }

@@ -258,7 +258,7 @@ static void batadv_neigh_node_release(struct kref *ref) if (bao->bat_neigh_free) bao->bat_neigh_free(neigh_node);

- batadv_hardif_free_ref(neigh_node->if_incoming); + batadv_hardif_put(neigh_node->if_incoming);

kfree_rcu(neigh_node, rcu); } @@ -366,7 +366,7 @@ batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node, goto out;

if (if_outgoing != BATADV_IF_DEFAULT && - !atomic_inc_not_zero(&if_outgoing->refcount)) { + !kref_get_unless_zero(&if_outgoing->refcount)) { kfree(orig_ifinfo); orig_ifinfo = NULL; goto out; @@ -446,7 +446,7 @@ batadv_neigh_ifinfo_new(struct batadv_neigh_node *neigh, if (!neigh_ifinfo) goto out;

- if (if_outgoing && !atomic_inc_not_zero(&if_outgoing->refcount)) { + if (if_outgoing && !kref_get_unless_zero(&if_outgoing->refcount)) { kfree(neigh_ifinfo); neigh_ifinfo = NULL; goto out; @@ -523,12 +523,12 @@ batadv_hardif_neigh_create(struct batadv_hard_iface *hard_iface, if (hardif_neigh) goto out;

- if (!atomic_inc_not_zero(&hard_iface->refcount)) + if (!kref_get_unless_zero(&hard_iface->refcount)) goto out;

hardif_neigh = kzalloc(sizeof(*hardif_neigh), GFP_ATOMIC); if (!hardif_neigh) { - batadv_hardif_free_ref(hard_iface); + batadv_hardif_put(hard_iface); goto out; }

@@ -634,7 +634,7 @@ batadv_neigh_node_new(struct batadv_orig_node *orig_node, if (!neigh_node) goto out;

- if (!atomic_inc_not_zero(&hard_iface->refcount)) { + if (!kref_get_unless_zero(&hard_iface->refcount)) { kfree(neigh_node); neigh_node = NULL; goto out; @@ -691,7 +691,7 @@ int batadv_hardif_neigh_seq_print_text(struct seq_file *seq, void *offset) primary_if->net_dev->dev_addr, net_dev->name, bat_priv->bat_algo_ops->name);

- batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if);

if (!bat_priv->bat_algo_ops->bat_neigh_print) { seq_puts(seq, @@ -716,7 +716,7 @@ static void batadv_orig_ifinfo_release(struct kref *ref) orig_ifinfo = container_of(ref, struct batadv_orig_ifinfo, refcount);

if (orig_ifinfo->if_outgoing != BATADV_IF_DEFAULT) - batadv_hardif_free_ref(orig_ifinfo->if_outgoing); + batadv_hardif_put(orig_ifinfo->if_outgoing);

/* this is the last reference to this object */ router = rcu_dereference_protected(orig_ifinfo->router, true); @@ -1216,7 +1216,7 @@ int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) primary_if->net_dev->dev_addr, net_dev->name, bat_priv->bat_algo_ops->name);

- batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if);

if (!bat_priv->bat_algo_ops->bat_orig_print) { seq_puts(seq, @@ -1272,7 +1272,7 @@ int batadv_orig_hardif_seq_print_text(struct seq_file *seq, void *offset)

out: if (hard_iface) - batadv_hardif_free_ref(hard_iface); + batadv_hardif_put(hard_iface); return 0; }

diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c index 787da48..43b5875 100644 --- a/net/batman-adv/routing.c +++ b/net/batman-adv/routing.c @@ -269,7 +269,7 @@ static int batadv_recv_my_icmp_packet(struct batadv_priv *bat_priv, } out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); if (orig_node) batadv_orig_node_free_ref(orig_node); return ret; @@ -317,7 +317,7 @@ static int batadv_recv_icmp_ttl_exceeded(struct batadv_priv *bat_priv,

out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); if (orig_node) batadv_orig_node_free_ref(orig_node); return ret; @@ -702,7 +702,7 @@ batadv_reroute_unicast_packet(struct batadv_priv *bat_priv, ret = true; out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); if (orig_node) batadv_orig_node_free_ref(orig_node);

@@ -808,7 +808,7 @@ static int batadv_check_unicast_ttvn(struct batadv_priv *bat_priv,

ether_addr_copy(unicast_packet->dest, primary_if->net_dev->dev_addr);

- batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if);

unicast_packet->ttvn = curr_ttvn;

diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c index 06e21fa..be8011c 100644 --- a/net/batman-adv/send.c +++ b/net/batman-adv/send.c @@ -246,7 +246,7 @@ bool batadv_send_skb_prepare_unicast_4addr(struct batadv_priv *bat_priv, ret = true; out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); return ret; }

@@ -409,9 +409,9 @@ static void batadv_forw_packet_free(struct batadv_forw_packet *forw_packet) { kfree_skb(forw_packet->skb); if (forw_packet->if_incoming) - batadv_hardif_free_ref(forw_packet->if_incoming); + batadv_hardif_put(forw_packet->if_incoming); if (forw_packet->if_outgoing) - batadv_hardif_free_ref(forw_packet->if_outgoing); + batadv_hardif_put(forw_packet->if_outgoing); kfree(forw_packet); }

@@ -497,7 +497,7 @@ out_and_inc: atomic_inc(&bat_priv->bcast_queue_left); out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); return NETDEV_TX_BUSY; }

diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c index 7268feb..c868afa 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/soft-interface.c @@ -377,7 +377,7 @@ dropped_freed: batadv_inc_counter(bat_priv, BATADV_CNT_TX_DROPPED); end: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); return NETDEV_TX_OK; }

@@ -878,7 +878,7 @@ static int batadv_softif_slave_add(struct net_device *dev,

out: if (hard_iface) - batadv_hardif_free_ref(hard_iface); + batadv_hardif_put(hard_iface); return ret; }

@@ -905,7 +905,7 @@ static int batadv_softif_slave_del(struct net_device *dev,

out: if (hard_iface) - batadv_hardif_free_ref(hard_iface); + batadv_hardif_put(hard_iface); return ret; }

diff --git a/net/batman-adv/sysfs.c b/net/batman-adv/sysfs.c index 63a86c2..acf85d9 100644 --- a/net/batman-adv/sysfs.c +++ b/net/batman-adv/sysfs.c @@ -771,7 +771,7 @@ static ssize_t batadv_show_mesh_iface(struct kobject *kobj,

length = sprintf(buff, "%s\n", ifname);

- batadv_hardif_free_ref(hard_iface); + batadv_hardif_put(hard_iface);

return length; } @@ -795,7 +795,7 @@ static ssize_t batadv_store_mesh_iface(struct kobject *kobj, if (strlen(buff) >= IFNAMSIZ) { pr_err("Invalid parameter for 'mesh_iface' setting received: interface name too long '%s'\n", buff); - batadv_hardif_free_ref(hard_iface); + batadv_hardif_put(hard_iface); return -EINVAL; }

@@ -829,7 +829,7 @@ static ssize_t batadv_store_mesh_iface(struct kobject *kobj, unlock: rtnl_unlock(); out: - batadv_hardif_free_ref(hard_iface); + batadv_hardif_put(hard_iface); return ret; }

@@ -863,7 +863,7 @@ static ssize_t batadv_show_iface_status(struct kobject *kobj, break; }

- batadv_hardif_free_ref(hard_iface); + batadv_hardif_put(hard_iface);

return length; } diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index f25b533..1ebdcd7 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -1023,7 +1023,7 @@ int batadv_tt_local_seq_print_text(struct seq_file *seq, void *offset) } out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); return 0; }

@@ -1687,7 +1687,7 @@ int batadv_tt_global_seq_print_text(struct seq_file *seq, void *offset) } out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); return 0; }

@@ -2600,7 +2600,7 @@ static int batadv_send_tt_request(struct batadv_priv *bat_priv,

out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); if (ret && tt_req_node) { spin_lock_bh(&bat_priv->tt.req_list_lock); /* hlist_del_init() verifies tt_req_node still is in the list */ @@ -2857,7 +2857,7 @@ out: if (orig_node) batadv_orig_node_free_ref(orig_node); if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); kfree(tvlv_tt_data); /* The packet was for this host, so it doesn't need to be re-routed */ return true; @@ -3180,7 +3180,7 @@ static void batadv_send_roam_adv(struct batadv_priv *bat_priv, u8 *client,

out: if (primary_if) - batadv_hardif_free_ref(primary_if); + batadv_hardif_put(primary_if); }

static void batadv_tt_purge(struct work_struct *work) diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h index 75e1b45..d69be62 100644 --- a/net/batman-adv/types.h +++ b/net/batman-adv/types.h @@ -111,7 +111,7 @@ struct batadv_hard_iface { struct net_device *net_dev; u8 num_bcasts; struct kobject *hardif_obj; - atomic_t refcount; + struct kref refcount; struct packet_type batman_adv_ptype; struct net_device *soft_iface; struct rcu_head rcu;