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This cleanup patchset includes the following patches: 

- bump version strings, by Simon Wunderlich
 
  - update docs about move IRC channel away from freenode,
    by Sven Eckelmann
 
  - Switch to kstrtox.h for kstrtou64, by Sven Eckelmann
 
  - Update NULL checks, by Sven Eckelmann (2 patches)
 
  - remove remaining skb-copy calls for broadcast packets,
    by Linus Lüssing
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Merge tag 'batadv-next-pullrequest-20210819' of git://git.open-mesh.org/linux-merge

Simon Wunderlich says:

====================
This cleanup patchset includes the following patches:

 - bump version strings, by Simon Wunderlich

 - update docs about move IRC channel away from freenode,
   by Sven Eckelmann

 - Switch to kstrtox.h for kstrtou64, by Sven Eckelmann

 - Update NULL checks, by Sven Eckelmann (2 patches)

 - remove remaining skb-copy calls for broadcast packets,
   by Linus Lüssing
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2021-08-20 12:04:50 +01:00
parent f444fea789 808cfdfad5
commit 815cc21d8d
28 changed files with 364 additions and 456 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/networking/batman-adv.rst
View File

@ -157,7 +157,7 @@ Contact
Please send us comments, experiences, questions, anything :)
IRC:
#batman on irc.freenode.org
#batadv on ircs://irc.hackint.org/
Mailing-list:
b.a.t.m.a.n@open-mesh.org (optional subscription at
https://lists.open-mesh.org/mailman3/postorius/lists/b.a.t.m.a.n.lists.open-mesh.org/)

2
MAINTAINERS
View File

@ -3197,7 +3197,7 @@ S: Maintained
W: https://www.open-mesh.org/
Q: https://patchwork.open-mesh.org/project/batman/list/
B: https://www.open-mesh.org/projects/batman-adv/issues
C: irc://chat.freenode.net/batman
C: ircs://irc.hackint.org/batadv
T: git https://git.open-mesh.org/linux-merge.git
F: Documentation/networking/batman-adv.rst
F: include/uapi/linux/batadv_packet.h

75
net/batman-adv/bat_iv_ogm.c
View File

@ -519,8 +519,7 @@ batadv_iv_ogm_can_aggregate(const struct batadv_ogm_packet *new_bat_ogm_packet,
}
out:
if (primary_if)
batadv_hardif_put(primary_if);
batadv_hardif_put(primary_if);
return res;
}
@ -857,8 +856,7 @@ static void batadv_iv_ogm_schedule_buff(struct batadv_hard_iface *hard_iface)
rcu_read_unlock();
out:
if (primary_if)
batadv_hardif_put(primary_if);
batadv_hardif_put(primary_if);
}
static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface)
@ -1046,14 +1044,10 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv,
unlock:
rcu_read_unlock();
out:
if (neigh_node)
batadv_neigh_node_put(neigh_node);
if (router)
batadv_neigh_node_put(router);
if (neigh_ifinfo)
batadv_neigh_ifinfo_put(neigh_ifinfo);
if (router_ifinfo)
batadv_neigh_ifinfo_put(router_ifinfo);
batadv_neigh_node_put(neigh_node);
batadv_neigh_node_put(router);
batadv_neigh_ifinfo_put(neigh_ifinfo);
batadv_neigh_ifinfo_put(router_ifinfo);
}
/**
@ -1194,8 +1188,7 @@ static bool batadv_iv_ogm_calc_tq(struct batadv_orig_node *orig_node,
ret = true;
out:
if (neigh_node)
batadv_neigh_node_put(neigh_node);
batadv_neigh_node_put(neigh_node);
return ret;
}
@ -1496,16 +1489,11 @@ out_neigh:
if (orig_neigh_node && !is_single_hop_neigh)
batadv_orig_node_put(orig_neigh_node);
out:
if (router_ifinfo)
batadv_neigh_ifinfo_put(router_ifinfo);
if (router)
batadv_neigh_node_put(router);
if (router_router)
batadv_neigh_node_put(router_router);
if (orig_neigh_router)
batadv_neigh_node_put(orig_neigh_router);
if (hardif_neigh)
batadv_hardif_neigh_put(hardif_neigh);
batadv_neigh_ifinfo_put(router_ifinfo);
batadv_neigh_node_put(router);
batadv_neigh_node_put(router_router);
batadv_neigh_node_put(orig_neigh_router);
batadv_hardif_neigh_put(hardif_neigh);
consume_skb(skb_priv);
}
@ -1926,8 +1914,7 @@ batadv_iv_ogm_orig_dump_entry(struct sk_buff *msg, u32 portid, u32 seq,
}
out:
if (neigh_node_best)
batadv_neigh_node_put(neigh_node_best);
batadv_neigh_node_put(neigh_node_best);
*sub_s = 0;
return 0;
@ -2049,10 +2036,8 @@ static bool batadv_iv_ogm_neigh_diff(struct batadv_neigh_node *neigh1,
*diff = (int)tq1 - (int)tq2;
out:
if (neigh1_ifinfo)
batadv_neigh_ifinfo_put(neigh1_ifinfo);
if (neigh2_ifinfo)
batadv_neigh_ifinfo_put(neigh2_ifinfo);
batadv_neigh_ifinfo_put(neigh1_ifinfo);
batadv_neigh_ifinfo_put(neigh2_ifinfo);
return ret;
}
@ -2299,8 +2284,7 @@ batadv_iv_gw_get_best_gw_node(struct batadv_priv *bat_priv)
if (tmp_gw_factor > max_gw_factor ||
(tmp_gw_factor == max_gw_factor &&
tq_avg > max_tq)) {
if (curr_gw)
batadv_gw_node_put(curr_gw);
batadv_gw_node_put(curr_gw);
curr_gw = gw_node;
kref_get(&curr_gw->refcount);
}
@ -2314,8 +2298,7 @@ batadv_iv_gw_get_best_gw_node(struct batadv_priv *bat_priv)
* $routing_class more tq points)
*/
if (tq_avg > max_tq) {
if (curr_gw)
batadv_gw_node_put(curr_gw);
batadv_gw_node_put(curr_gw);
curr_gw = gw_node;
kref_get(&curr_gw->refcount);
}
@ -2332,8 +2315,7 @@ batadv_iv_gw_get_best_gw_node(struct batadv_priv *bat_priv)
next:
batadv_neigh_node_put(router);
if (router_ifinfo)
batadv_neigh_ifinfo_put(router_ifinfo);
batadv_neigh_ifinfo_put(router_ifinfo);
}
rcu_read_unlock();
@ -2397,14 +2379,10 @@ static bool batadv_iv_gw_is_eligible(struct batadv_priv *bat_priv,
ret = true;
out:
if (router_gw_ifinfo)
batadv_neigh_ifinfo_put(router_gw_ifinfo);
if (router_orig_ifinfo)
batadv_neigh_ifinfo_put(router_orig_ifinfo);
if (router_gw)
batadv_neigh_node_put(router_gw);
if (router_orig)
batadv_neigh_node_put(router_orig);
batadv_neigh_ifinfo_put(router_gw_ifinfo);
batadv_neigh_ifinfo_put(router_orig_ifinfo);
batadv_neigh_node_put(router_gw);
batadv_neigh_node_put(router_orig);
return ret;
}
@ -2479,12 +2457,9 @@ static int batadv_iv_gw_dump_entry(struct sk_buff *msg, u32 portid,
ret = 0;
out:
if (curr_gw)
batadv_gw_node_put(curr_gw);
if (router_ifinfo)
batadv_neigh_ifinfo_put(router_ifinfo);
if (router)
batadv_neigh_node_put(router);
batadv_gw_node_put(curr_gw);
batadv_neigh_ifinfo_put(router_ifinfo);
batadv_neigh_node_put(router);
return ret;
}

30
net/batman-adv/bat_v.c
View File

@ -106,8 +106,7 @@ static void batadv_v_iface_update_mac(struct batadv_hard_iface *hard_iface)
batadv_v_primary_iface_set(hard_iface);
out:
if (primary_if)
batadv_hardif_put(primary_if);
batadv_hardif_put(primary_if);
}
static void
@ -366,8 +365,7 @@ batadv_v_orig_dump_entry(struct sk_buff *msg, u32 portid, u32 seq,
}
out:
if (neigh_node_best)
batadv_neigh_node_put(neigh_node_best);
batadv_neigh_node_put(neigh_node_best);
*sub_s = 0;
return 0;
@ -568,10 +566,8 @@ static int batadv_v_gw_throughput_get(struct batadv_gw_node *gw_node, u32 *bw)
ret = 0;
out:
if (router)
batadv_neigh_node_put(router);
if (router_ifinfo)
batadv_neigh_ifinfo_put(router_ifinfo);
batadv_neigh_node_put(router);
batadv_neigh_ifinfo_put(router_ifinfo);
return ret;
}
@ -599,8 +595,7 @@ batadv_v_gw_get_best_gw_node(struct batadv_priv *bat_priv)
if (curr_gw && bw <= max_bw)
goto next;
if (curr_gw)
batadv_gw_node_put(curr_gw);
batadv_gw_node_put(curr_gw);
curr_gw = gw_node;
kref_get(&curr_gw->refcount);
@ -662,10 +657,8 @@ static bool batadv_v_gw_is_eligible(struct batadv_priv *bat_priv,
ret = true;
out:
if (curr_gw)
batadv_gw_node_put(curr_gw);
if (orig_gw)
batadv_gw_node_put(orig_gw);
batadv_gw_node_put(curr_gw);
batadv_gw_node_put(orig_gw);
return ret;
}
@ -764,12 +757,9 @@ static int batadv_v_gw_dump_entry(struct sk_buff *msg, u32 portid,
ret = 0;
out:
if (curr_gw)
batadv_gw_node_put(curr_gw);
if (router_ifinfo)
batadv_neigh_ifinfo_put(router_ifinfo);
if (router)
batadv_neigh_node_put(router);
batadv_gw_node_put(curr_gw);
batadv_neigh_ifinfo_put(router_ifinfo);
batadv_neigh_node_put(router);
return ret;
}

9
net/batman-adv/bat_v_elp.c
View File

@ -486,14 +486,11 @@ static void batadv_v_elp_neigh_update(struct batadv_priv *bat_priv,
hardif_neigh->bat_v.elp_interval = ntohl(elp_packet->elp_interval);
hardif_free:
if (hardif_neigh)
batadv_hardif_neigh_put(hardif_neigh);
batadv_hardif_neigh_put(hardif_neigh);
neigh_free:
if (neigh)
batadv_neigh_node_put(neigh);
batadv_neigh_node_put(neigh);
orig_free:
if (orig_neigh)
batadv_orig_node_put(orig_neigh);
batadv_orig_node_put(orig_neigh);
}
/**

39
net/batman-adv/bat_v_ogm.c
View File

@ -584,12 +584,9 @@ static void batadv_v_ogm_forward(struct batadv_priv *bat_priv,
batadv_v_ogm_queue_on_if(skb, if_outgoing);
out:
if (orig_ifinfo)
batadv_orig_ifinfo_put(orig_ifinfo);
if (router)
batadv_neigh_node_put(router);
if (neigh_ifinfo)
batadv_neigh_ifinfo_put(neigh_ifinfo);
batadv_orig_ifinfo_put(orig_ifinfo);
batadv_neigh_node_put(router);
batadv_neigh_ifinfo_put(neigh_ifinfo);
}
/**
@ -669,10 +666,8 @@ static int batadv_v_ogm_metric_update(struct batadv_priv *bat_priv,
else
ret = 0;
out:
if (orig_ifinfo)
batadv_orig_ifinfo_put(orig_ifinfo);
if (neigh_ifinfo)
batadv_neigh_ifinfo_put(neigh_ifinfo);
batadv_orig_ifinfo_put(orig_ifinfo);
batadv_neigh_ifinfo_put(neigh_ifinfo);
return ret;
}
@ -763,16 +758,11 @@ static bool batadv_v_ogm_route_update(struct batadv_priv *bat_priv,
batadv_update_route(bat_priv, orig_node, if_outgoing, neigh_node);
out:
if (router)
batadv_neigh_node_put(router);
if (orig_neigh_router)
batadv_neigh_node_put(orig_neigh_router);
if (orig_neigh_node)
batadv_orig_node_put(orig_neigh_node);
if (router_ifinfo)
batadv_neigh_ifinfo_put(router_ifinfo);
if (neigh_ifinfo)
batadv_neigh_ifinfo_put(neigh_ifinfo);
batadv_neigh_node_put(router);
batadv_neigh_node_put(orig_neigh_router);
batadv_orig_node_put(orig_neigh_node);
batadv_neigh_ifinfo_put(router_ifinfo);
batadv_neigh_ifinfo_put(neigh_ifinfo);
return forward;
}
@ -978,12 +968,9 @@ static void batadv_v_ogm_process(const struct sk_buff *skb, int ogm_offset,
}
rcu_read_unlock();
out:
if (orig_node)
batadv_orig_node_put(orig_node);
if (neigh_node)
batadv_neigh_node_put(neigh_node);
if (hardif_neigh)
batadv_hardif_neigh_put(hardif_neigh);
batadv_orig_node_put(orig_node);
batadv_neigh_node_put(neigh_node);
batadv_hardif_neigh_put(hardif_neigh);
}
/**

33
net/batman-adv/bridge_loop_avoidance.c
View File

@ -162,6 +162,9 @@ static void batadv_backbone_gw_release(struct kref *ref)
*/
static void batadv_backbone_gw_put(struct batadv_bla_backbone_gw *backbone_gw)
{
if (!backbone_gw)
return;
kref_put(&backbone_gw->refcount, batadv_backbone_gw_release);
}
@ -197,6 +200,9 @@ static void batadv_claim_release(struct kref *ref)
*/
static void batadv_claim_put(struct batadv_bla_claim *claim)
{
if (!claim)
return;
kref_put(&claim->refcount, batadv_claim_release);
}
@ -439,8 +445,7 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, u8 *mac,
netif_rx_any_context(skb);
out:
if (primary_if)
batadv_hardif_put(primary_if);
batadv_hardif_put(primary_if);
}
/**
@ -1498,8 +1503,7 @@ static void batadv_bla_periodic_work(struct work_struct *work)
rcu_read_unlock();
}
out:
if (primary_if)
batadv_hardif_put(primary_if);
batadv_hardif_put(primary_if);
queue_delayed_work(batadv_event_workqueue, &bat_priv->bla.work,
msecs_to_jiffies(BATADV_BLA_PERIOD_LENGTH));
@ -1808,8 +1812,7 @@ void batadv_bla_free(struct batadv_priv *bat_priv)
batadv_hash_destroy(bat_priv->bla.backbone_hash);
bat_priv->bla.backbone_hash = NULL;
}
if (primary_if)
batadv_hardif_put(primary_if);
batadv_hardif_put(primary_if);
}
/**
@ -1996,10 +1999,8 @@ handled:
ret = true;
out:
if (primary_if)
batadv_hardif_put(primary_if);
if (claim)
batadv_claim_put(claim);
batadv_hardif_put(primary_if);
batadv_claim_put(claim);
return ret;
}
@ -2103,10 +2104,8 @@ allow:
handled:
ret = true;
out:
if (primary_if)
batadv_hardif_put(primary_if);
if (claim)
batadv_claim_put(claim);
batadv_hardif_put(primary_if);
batadv_claim_put(claim);
return ret;
}
@ -2271,8 +2270,7 @@ int batadv_bla_claim_dump(struct sk_buff *msg, struct netlink_callback *cb)
ret = msg->len;
out:
if (primary_if)
batadv_hardif_put(primary_if);
batadv_hardif_put(primary_if);
dev_put(soft_iface);
@ -2442,8 +2440,7 @@ int batadv_bla_backbone_dump(struct sk_buff *msg, struct netlink_callback *cb)
ret = msg->len;
out:
if (primary_if)
batadv_hardif_put(primary_if);
batadv_hardif_put(primary_if);
dev_put(soft_iface);

24
net/batman-adv/distributed-arp-table.c
View File

@ -127,6 +127,9 @@ static void batadv_dat_entry_release(struct kref *ref)
*/
static void batadv_dat_entry_put(struct batadv_dat_entry *dat_entry)
{
if (!dat_entry)
return;
kref_put(&dat_entry->refcount, batadv_dat_entry_release);
}
@ -405,8 +408,7 @@ static void batadv_dat_entry_add(struct batadv_priv *bat_priv, __be32 ip,
&dat_entry->ip, dat_entry->mac_addr, batadv_print_vid(vid));
out:
if (dat_entry)
batadv_dat_entry_put(dat_entry);
batadv_dat_entry_put(dat_entry);
}
#ifdef CONFIG_BATMAN_ADV_DEBUG
@ -594,8 +596,7 @@ static void batadv_choose_next_candidate(struct batadv_priv *bat_priv,
continue;
max = tmp_max;
if (max_orig_node)
batadv_orig_node_put(max_orig_node);
batadv_orig_node_put(max_orig_node);
max_orig_node = orig_node;
}
rcu_read_unlock();
@ -981,8 +982,7 @@ int batadv_dat_cache_dump(struct sk_buff *msg, struct netlink_callback *cb)
ret = msg->len;
out:
if (primary_if)
batadv_hardif_put(primary_if);
batadv_hardif_put(primary_if);
dev_put(soft_iface);
@ -1217,8 +1217,7 @@ bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv,
BATADV_P_DAT_DHT_GET);
}
out:
if (dat_entry)
batadv_dat_entry_put(dat_entry);
batadv_dat_entry_put(dat_entry);
return ret;
}
@ -1285,8 +1284,7 @@ bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv,
ret = true;
}
out:
if (dat_entry)
batadv_dat_entry_put(dat_entry);
batadv_dat_entry_put(dat_entry);
if (ret)
kfree_skb(skb);
return ret;
@ -1419,8 +1417,7 @@ bool batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv,
out:
if (dropped)
kfree_skb(skb);
if (dat_entry)
batadv_dat_entry_put(dat_entry);
batadv_dat_entry_put(dat_entry);
/* if dropped == false -> deliver to the interface */
return dropped;
}
@ -1829,7 +1826,6 @@ bool batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv,
ret = true;
out:
if (dat_entry)
batadv_dat_entry_put(dat_entry);
batadv_dat_entry_put(dat_entry);
return ret;
}

6
net/batman-adv/fragmentation.c
View File

@ -381,10 +381,8 @@ bool batadv_frag_skb_fwd(struct sk_buff *skb,
}
out:
if (orig_node_dst)
batadv_orig_node_put(orig_node_dst);
if (neigh_node)
batadv_neigh_node_put(neigh_node);
batadv_orig_node_put(orig_node_dst);
batadv_neigh_node_put(neigh_node);
return ret;
}

57
net/batman-adv/gateway_client.c
View File

@ -59,7 +59,7 @@
* after rcu grace period
* @ref: kref pointer of the gw_node
*/
static void batadv_gw_node_release(struct kref *ref)
void batadv_gw_node_release(struct kref *ref)
{
struct batadv_gw_node *gw_node;
@ -69,16 +69,6 @@ static void batadv_gw_node_release(struct kref *ref)
kfree_rcu(gw_node, rcu);
}
/**
* batadv_gw_node_put() - decrement the gw_node refcounter and possibly release
* it
* @gw_node: gateway node to free
*/
void batadv_gw_node_put(struct batadv_gw_node *gw_node)
{
kref_put(&gw_node->refcount, batadv_gw_node_release);
}
/**
* batadv_gw_get_selected_gw_node() - Get currently selected gateway
* @bat_priv: the bat priv with all the soft interface information
@ -130,8 +120,7 @@ batadv_gw_get_selected_orig(struct batadv_priv *bat_priv)
unlock:
rcu_read_unlock();
out:
if (gw_node)
batadv_gw_node_put(gw_node);
batadv_gw_node_put(gw_node);
return orig_node;
}
@ -148,8 +137,7 @@ static void batadv_gw_select(struct batadv_priv *bat_priv,
curr_gw_node = rcu_replace_pointer(bat_priv->gw.curr_gw, new_gw_node,
true);
if (curr_gw_node)
batadv_gw_node_put(curr_gw_node);
batadv_gw_node_put(curr_gw_node);
spin_unlock_bh(&bat_priv->gw.list_lock);
}
@ -284,14 +272,10 @@ void batadv_gw_election(struct batadv_priv *bat_priv)
batadv_gw_select(bat_priv, next_gw);
out:
if (curr_gw)
batadv_gw_node_put(curr_gw);
if (next_gw)
batadv_gw_node_put(next_gw);
if (router)
batadv_neigh_node_put(router);
if (router_ifinfo)
batadv_neigh_ifinfo_put(router_ifinfo);
batadv_gw_node_put(curr_gw);
batadv_gw_node_put(next_gw);
batadv_neigh_node_put(router);
batadv_neigh_ifinfo_put(router_ifinfo);
}
/**
@ -325,8 +309,7 @@ void batadv_gw_check_election(struct batadv_priv *bat_priv,
reselect:
batadv_gw_reselect(bat_priv);
out:
if (curr_gw_orig)
batadv_orig_node_put(curr_gw_orig);
batadv_orig_node_put(curr_gw_orig);
}
/**
@ -466,13 +449,11 @@ void batadv_gw_node_update(struct batadv_priv *bat_priv,
if (gw_node == curr_gw)
batadv_gw_reselect(bat_priv);
if (curr_gw)
batadv_gw_node_put(curr_gw);
batadv_gw_node_put(curr_gw);
}
out:
if (gw_node)
batadv_gw_node_put(gw_node);
batadv_gw_node_put(gw_node);
}
/**
@ -555,8 +536,7 @@ int batadv_gw_dump(struct sk_buff *msg, struct netlink_callback *cb)
ret = msg->len;
out:
if (primary_if)
batadv_hardif_put(primary_if);
batadv_hardif_put(primary_if);
dev_put(soft_iface);
return ret;
@ -779,15 +759,10 @@ bool batadv_gw_out_of_range(struct batadv_priv *bat_priv,
batadv_neigh_ifinfo_put(old_ifinfo);
out:
if (orig_dst_node)
batadv_orig_node_put(orig_dst_node);
if (curr_gw)
batadv_gw_node_put(curr_gw);
if (gw_node)
batadv_gw_node_put(gw_node);
if (neigh_old)
batadv_neigh_node_put(neigh_old);
if (neigh_curr)
batadv_neigh_node_put(neigh_curr);
batadv_orig_node_put(orig_dst_node);
batadv_gw_node_put(curr_gw);
batadv_gw_node_put(gw_node);
batadv_neigh_node_put(neigh_old);
batadv_neigh_node_put(neigh_curr);
return out_of_range;
}

16
net/batman-adv/gateway_client.h
View File

@ -9,6 +9,7 @@
#include "main.h"
#include <linux/kref.h>
#include <linux/netlink.h>
#include <linux/skbuff.h>
#include <linux/types.h>
@ -27,7 +28,7 @@ void batadv_gw_node_update(struct batadv_priv *bat_priv,
void batadv_gw_node_delete(struct batadv_priv *bat_priv,
struct batadv_orig_node *orig_node);
void batadv_gw_node_free(struct batadv_priv *bat_priv);
void batadv_gw_node_put(struct batadv_gw_node *gw_node);
void batadv_gw_node_release(struct kref *ref);
struct batadv_gw_node *
batadv_gw_get_selected_gw_node(struct batadv_priv *bat_priv);
int batadv_gw_dump(struct sk_buff *msg, struct netlink_callback *cb);
@ -38,4 +39,17 @@ batadv_gw_dhcp_recipient_get(struct sk_buff *skb, unsigned int *header_len,
struct batadv_gw_node *batadv_gw_node_get(struct batadv_priv *bat_priv,
struct batadv_orig_node *orig_node);
/**
* batadv_gw_node_put() - decrement the gw_node refcounter and possibly release
* it
* @gw_node: gateway node to free
*/
static inline void batadv_gw_node_put(struct batadv_gw_node *gw_node)
{
if (!gw_node)
return;
kref_put(&gw_node->refcount, batadv_gw_node_release);
}
#endif /* _NET_BATMAN_ADV_GATEWAY_CLIENT_H_ */

2
net/batman-adv/gateway_common.c
View File

@ -10,7 +10,7 @@
#include <linux/atomic.h>
#include <linux/byteorder/generic.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/kstrtox.h>
#include <linux/limits.h>
#include <linux/math64.h>
#include <linux/netdevice.h>

21
net/batman-adv/hard-interface.c
View File

@ -236,8 +236,7 @@ static struct net_device *batadv_get_real_netdevice(struct net_device *netdev)
real_netdev = dev_get_by_index(real_net, ifindex);
out:
if (hard_iface)
batadv_hardif_put(hard_iface);
batadv_hardif_put(hard_iface);
return real_netdev;
}
@ -457,8 +456,7 @@ static void batadv_primary_if_update_addr(struct batadv_priv *bat_priv,
batadv_dat_init_own_addr(bat_priv, primary_if);
batadv_bla_update_orig_address(bat_priv, primary_if, oldif);
out:
if (primary_if)
batadv_hardif_put(primary_if);
batadv_hardif_put(primary_if);
}
static void batadv_primary_if_select(struct batadv_priv *bat_priv,
@ -481,8 +479,7 @@ static void batadv_primary_if_select(struct batadv_priv *bat_priv,
batadv_primary_if_update_addr(bat_priv, curr_hard_iface);
out:
if (curr_hard_iface)
batadv_hardif_put(curr_hard_iface);
batadv_hardif_put(curr_hard_iface);
}
static bool
@ -657,8 +654,7 @@ batadv_hardif_activate_interface(struct batadv_hard_iface *hard_iface)
bat_priv->algo_ops->iface.activate(hard_iface);
out:
if (primary_if)
batadv_hardif_put(primary_if);
batadv_hardif_put(primary_if);
}
static void
@ -811,8 +807,7 @@ void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface)
new_if = batadv_hardif_get_active(hard_iface->soft_iface);
batadv_primary_if_select(bat_priv, new_if);
if (new_if)
batadv_hardif_put(new_if);
batadv_hardif_put(new_if);
}
bat_priv->algo_ops->iface.disable(hard_iface);
@ -834,8 +829,7 @@ void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface)
batadv_hardif_put(hard_iface);
out:
if (primary_if)
batadv_hardif_put(primary_if);
batadv_hardif_put(primary_if);
}
static struct batadv_hard_iface *
@ -990,8 +984,7 @@ static int batadv_hard_if_event(struct notifier_block *this,
hardif_put:
batadv_hardif_put(hard_iface);
out:
if (primary_if)
batadv_hardif_put(primary_if);
batadv_hardif_put(primary_if);
return NOTIFY_DONE;
}

3
net/batman-adv/hard-interface.h
View File

@ -89,6 +89,9 @@ int batadv_hardif_no_broadcast(struct batadv_hard_iface *if_outgoing,
*/
static inline void batadv_hardif_put(struct batadv_hard_iface *hard_iface)
{
if (!hard_iface)
return;
kref_put(&hard_iface->refcount, batadv_hardif_release);
}

2
net/batman-adv/main.h
View File

@ -13,7 +13,7 @@
#define BATADV_DRIVER_DEVICE "batman-adv"
#ifndef BATADV_SOURCE_VERSION
#define BATADV_SOURCE_VERSION "2021.2"
#define BATADV_SOURCE_VERSION "2021.3"
#endif
/* B.A.T.M.A.N. parameters */

2
net/batman-adv/multicast.c
View File

@ -2241,7 +2241,7 @@ out:
if (!ret && primary_if)
*primary_if = hard_iface;
else if (hard_iface)
else
batadv_hardif_put(hard_iface);
return ret;

6
net/batman-adv/netlink.c
View File

@ -359,15 +359,13 @@ static int batadv_netlink_mesh_fill(struct sk_buff *msg,
atomic_read(&bat_priv->orig_interval)))
goto nla_put_failure;
if (primary_if)
batadv_hardif_put(primary_if);
batadv_hardif_put(primary_if);
genlmsg_end(msg, hdr);
return 0;
nla_put_failure:
if (primary_if)
batadv_hardif_put(primary_if);
batadv_hardif_put(primary_if);
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;

24
net/batman-adv/network-coding.c
View File

@ -217,6 +217,9 @@ static void batadv_nc_node_release(struct kref *ref)
*/
static void batadv_nc_node_put(struct batadv_nc_node *nc_node)
{
if (!nc_node)
return;
kref_put(&nc_node->refcount, batadv_nc_node_release);
}
@ -241,6 +244,9 @@ static void batadv_nc_path_release(struct kref *ref)
*/
static void batadv_nc_path_put(struct batadv_nc_path *nc_path)
{
if (!nc_path)
return;
kref_put(&nc_path->refcount, batadv_nc_path_release);
}
@ -930,10 +936,8 @@ void batadv_nc_update_nc_node(struct batadv_priv *bat_priv,
out_nc_node->last_seen = jiffies;
out:
if (in_nc_node)
batadv_nc_node_put(in_nc_node);
if (out_nc_node)
batadv_nc_node_put(out_nc_node);
batadv_nc_node_put(in_nc_node);
batadv_nc_node_put(out_nc_node);
}
/**
@ -1209,14 +1213,10 @@ static bool batadv_nc_code_packets(struct batadv_priv *bat_priv,
batadv_send_unicast_skb(skb_dest, first_dest);
res = true;
out:
if (router_neigh)
batadv_neigh_node_put(router_neigh);
if (router_coding)
batadv_neigh_node_put(router_coding);
if (router_neigh_ifinfo)
batadv_neigh_ifinfo_put(router_neigh_ifinfo);
if (router_coding_ifinfo)
batadv_neigh_ifinfo_put(router_coding_ifinfo);
batadv_neigh_node_put(router_neigh);
batadv_neigh_node_put(router_coding);
batadv_neigh_ifinfo_put(router_neigh_ifinfo);
batadv_neigh_ifinfo_put(router_coding_ifinfo);
return res;
}

102
net/batman-adv/originator.c
View File

@ -177,7 +177,7 @@ out:
* and queue for free after rcu grace period
* @ref: kref pointer of the originator-vlan object
*/
static void batadv_orig_node_vlan_release(struct kref *ref)
void batadv_orig_node_vlan_release(struct kref *ref)
{
struct batadv_orig_node_vlan *orig_vlan;
@ -186,16 +186,6 @@ static void batadv_orig_node_vlan_release(struct kref *ref)
kfree_rcu(orig_vlan, rcu);
}
/**
* batadv_orig_node_vlan_put() - decrement the refcounter and possibly release
* the originator-vlan object
* @orig_vlan: the originator-vlan object to release
*/
void batadv_orig_node_vlan_put(struct batadv_orig_node_vlan *orig_vlan)
{
kref_put(&orig_vlan->refcount, batadv_orig_node_vlan_release);
}
/**
* batadv_originator_init() - Initialize all originator structures
* @bat_priv: the bat priv with all the soft interface information
@ -231,7 +221,7 @@ err:
* free after rcu grace period
* @ref: kref pointer of the neigh_ifinfo
*/
static void batadv_neigh_ifinfo_release(struct kref *ref)
void batadv_neigh_ifinfo_release(struct kref *ref)
{
struct batadv_neigh_ifinfo *neigh_ifinfo;
@ -243,22 +233,12 @@ static void batadv_neigh_ifinfo_release(struct kref *ref)
kfree_rcu(neigh_ifinfo, rcu);
}
/**
* batadv_neigh_ifinfo_put() - decrement the refcounter and possibly release
* the neigh_ifinfo
* @neigh_ifinfo: the neigh_ifinfo object to release
*/
void batadv_neigh_ifinfo_put(struct batadv_neigh_ifinfo *neigh_ifinfo)
{
kref_put(&neigh_ifinfo->refcount, batadv_neigh_ifinfo_release);
}
/**
* batadv_hardif_neigh_release() - release hardif neigh node from lists and
* queue for free after rcu grace period
* @ref: kref pointer of the neigh_node
*/
static void batadv_hardif_neigh_release(struct kref *ref)
void batadv_hardif_neigh_release(struct kref *ref)
{
struct batadv_hardif_neigh_node *hardif_neigh;
@ -273,22 +253,12 @@ static void batadv_hardif_neigh_release(struct kref *ref)
kfree_rcu(hardif_neigh, rcu);
}
/**
* batadv_hardif_neigh_put() - decrement the hardif neighbors refcounter
* and possibly release it
* @hardif_neigh: hardif neigh neighbor to free
*/
void batadv_hardif_neigh_put(struct batadv_hardif_neigh_node *hardif_neigh)
{
kref_put(&hardif_neigh->refcount, batadv_hardif_neigh_release);
}
/**
* batadv_neigh_node_release() - release neigh_node from lists and queue for
* free after rcu grace period
* @ref: kref pointer of the neigh_node
*/
static void batadv_neigh_node_release(struct kref *ref)
void batadv_neigh_node_release(struct kref *ref)
{
struct hlist_node *node_tmp;
struct batadv_neigh_node *neigh_node;
@ -308,16 +278,6 @@ static void batadv_neigh_node_release(struct kref *ref)
kfree_rcu(neigh_node, rcu);
}
/**
* batadv_neigh_node_put() - decrement the neighbors refcounter and possibly
* release it
* @neigh_node: neigh neighbor to free
*/
void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node)
{
kref_put(&neigh_node->refcount, batadv_neigh_node_release);
}
/**
* batadv_orig_router_get() - router to the originator depending on iface
* @orig_node: the orig node for the router
@ -704,8 +664,7 @@ batadv_neigh_node_create(struct batadv_orig_node *orig_node,
out:
spin_unlock_bh(&orig_node->neigh_list_lock);
if (hardif_neigh)
batadv_hardif_neigh_put(hardif_neigh);
batadv_hardif_neigh_put(hardif_neigh);
return neigh_node;
}
@ -797,11 +756,9 @@ int batadv_hardif_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb)
ret = msg->len;
out:
if (hardif)
batadv_hardif_put(hardif);
batadv_hardif_put(hardif);
dev_put(hard_iface);
if (primary_if)
batadv_hardif_put(primary_if);
batadv_hardif_put(primary_if);
dev_put(soft_iface);
return ret;
@ -812,7 +769,7 @@ int batadv_hardif_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb)
* free after rcu grace period
* @ref: kref pointer of the orig_ifinfo
*/
static void batadv_orig_ifinfo_release(struct kref *ref)
void batadv_orig_ifinfo_release(struct kref *ref)
{
struct batadv_orig_ifinfo *orig_ifinfo;
struct batadv_neigh_node *router;
@ -824,22 +781,11 @@ static void batadv_orig_ifinfo_release(struct kref *ref)
/* this is the last reference to this object */
router = rcu_dereference_protected(orig_ifinfo->router, true);
if (router)
batadv_neigh_node_put(router);
batadv_neigh_node_put(router);
kfree_rcu(orig_ifinfo, rcu);
}
/**
* batadv_orig_ifinfo_put() - decrement the refcounter and possibly release
* the orig_ifinfo
* @orig_ifinfo: the orig_ifinfo object to release
*/
void batadv_orig_ifinfo_put(struct batadv_orig_ifinfo *orig_ifinfo)
{
kref_put(&orig_ifinfo->refcount, batadv_orig_ifinfo_release);
}
/**
* batadv_orig_node_free_rcu() - free the orig_node
* @rcu: rcu pointer of the orig_node
@ -863,7 +809,7 @@ static void batadv_orig_node_free_rcu(struct rcu_head *rcu)
* free after rcu grace period
* @ref: kref pointer of the orig_node
*/
static void batadv_orig_node_release(struct kref *ref)
void batadv_orig_node_release(struct kref *ref)
{
struct hlist_node *node_tmp;
struct batadv_neigh_node *neigh_node;
@ -893,8 +839,7 @@ static void batadv_orig_node_release(struct kref *ref)
orig_node->last_bonding_candidate = NULL;
spin_unlock_bh(&orig_node->neigh_list_lock);
if (last_candidate)
batadv_orig_ifinfo_put(last_candidate);
batadv_orig_ifinfo_put(last_candidate);
spin_lock_bh(&orig_node->vlan_list_lock);
hlist_for_each_entry_safe(vlan, node_tmp, &orig_node->vlan_list, list) {
@ -909,16 +854,6 @@ static void batadv_orig_node_release(struct kref *ref)
call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu);
}
/**
* batadv_orig_node_put() - decrement the orig node refcounter and possibly
* release it
* @orig_node: the orig node to free
*/
void batadv_orig_node_put(struct batadv_orig_node *orig_node)
{
kref_put(&orig_node->refcount, batadv_orig_node_release);
}
/**
* batadv_originator_free() - Free all originator structures
* @bat_priv: the bat priv with all the soft interface information
@ -1211,8 +1146,7 @@ batadv_find_best_neighbor(struct batadv_priv *bat_priv,
if (!kref_get_unless_zero(&neigh->refcount))
continue;
if (best)
batadv_neigh_node_put(best);
batadv_neigh_node_put(best);
best = neigh;
}
@ -1257,8 +1191,7 @@ static bool batadv_purge_orig_node(struct batadv_priv *bat_priv,
BATADV_IF_DEFAULT);
batadv_update_route(bat_priv, orig_node, BATADV_IF_DEFAULT,
best_neigh_node);
if (best_neigh_node)
batadv_neigh_node_put(best_neigh_node);
batadv_neigh_node_put(best_neigh_node);
/* ... then for all other interfaces. */
rcu_read_lock();
@ -1277,8 +1210,7 @@ static bool batadv_purge_orig_node(struct batadv_priv *bat_priv,
hard_iface);
batadv_update_route(bat_priv, orig_node, hard_iface,
best_neigh_node);
if (best_neigh_node)
batadv_neigh_node_put(best_neigh_node);
batadv_neigh_node_put(best_neigh_node);
batadv_hardif_put(hard_iface);
}
@ -1408,11 +1340,9 @@ int batadv_orig_dump(struct sk_buff *msg, struct netlink_callback *cb)
ret = msg->len;
out:
if (hardif)
batadv_hardif_put(hardif);
batadv_hardif_put(hardif);
dev_put(hard_iface);
if (primary_if)
batadv_hardif_put(primary_if);
batadv_hardif_put(primary_if);
dev_put(soft_iface);
return ret;

96
net/batman-adv/originator.h
View File

@ -12,6 +12,7 @@
#include <linux/compiler.h>
#include <linux/if_ether.h>
#include <linux/jhash.h>
#include <linux/kref.h>
#include <linux/netlink.h>
#include <linux/skbuff.h>
#include <linux/types.h>
@ -20,19 +21,18 @@ bool batadv_compare_orig(const struct hlist_node *node, const void *data2);
int batadv_originator_init(struct batadv_priv *bat_priv);
void batadv_originator_free(struct batadv_priv *bat_priv);
void batadv_purge_orig_ref(struct batadv_priv *bat_priv);
void batadv_orig_node_put(struct batadv_orig_node *orig_node);
void batadv_orig_node_release(struct kref *ref);
struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
const u8 *addr);
struct batadv_hardif_neigh_node *
batadv_hardif_neigh_get(const struct batadv_hard_iface *hard_iface,
const u8 *neigh_addr);
void
batadv_hardif_neigh_put(struct batadv_hardif_neigh_node *hardif_neigh);
void batadv_hardif_neigh_release(struct kref *ref);
struct batadv_neigh_node *
batadv_neigh_node_get_or_create(struct batadv_orig_node *orig_node,
struct batadv_hard_iface *hard_iface,
const u8 *neigh_addr);
void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node);
void batadv_neigh_node_release(struct kref *ref);
struct batadv_neigh_node *
batadv_orig_router_get(struct batadv_orig_node *orig_node,
const struct batadv_hard_iface *if_outgoing);
@ -42,7 +42,7 @@ batadv_neigh_ifinfo_new(struct batadv_neigh_node *neigh,
struct batadv_neigh_ifinfo *
batadv_neigh_ifinfo_get(struct batadv_neigh_node *neigh,
struct batadv_hard_iface *if_outgoing);
void batadv_neigh_ifinfo_put(struct batadv_neigh_ifinfo *neigh_ifinfo);
void batadv_neigh_ifinfo_release(struct kref *ref);
int batadv_hardif_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb);
@ -52,7 +52,7 @@ batadv_orig_ifinfo_get(struct batadv_orig_node *orig_node,
struct batadv_orig_ifinfo *
batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node,
struct batadv_hard_iface *if_outgoing);
void batadv_orig_ifinfo_put(struct batadv_orig_ifinfo *orig_ifinfo);
void batadv_orig_ifinfo_release(struct kref *ref);
int batadv_orig_dump(struct sk_buff *msg, struct netlink_callback *cb);
struct batadv_orig_node_vlan *
@ -61,7 +61,7 @@ batadv_orig_node_vlan_new(struct batadv_orig_node *orig_node,
struct batadv_orig_node_vlan *
batadv_orig_node_vlan_get(struct batadv_orig_node *orig_node,
unsigned short vid);
void batadv_orig_node_vlan_put(struct batadv_orig_node_vlan *orig_vlan);
void batadv_orig_node_vlan_release(struct kref *ref);
/**
* batadv_choose_orig() - Return the index of the orig entry in the hash table
@ -82,4 +82,86 @@ static inline u32 batadv_choose_orig(const void *data, u32 size)
struct batadv_orig_node *
batadv_orig_hash_find(struct batadv_priv *bat_priv, const void *data);
/**
* batadv_orig_node_vlan_put() - decrement the refcounter and possibly release
* the originator-vlan object
* @orig_vlan: the originator-vlan object to release
*/
static inline void
batadv_orig_node_vlan_put(struct batadv_orig_node_vlan *orig_vlan)
{
if (!orig_vlan)
return;
kref_put(&orig_vlan->refcount, batadv_orig_node_vlan_release);
}
/**
* batadv_neigh_ifinfo_put() - decrement the refcounter and possibly release
* the neigh_ifinfo
* @neigh_ifinfo: the neigh_ifinfo object to release
*/
static inline void
batadv_neigh_ifinfo_put(struct batadv_neigh_ifinfo *neigh_ifinfo)
{
if (!neigh_ifinfo)
return;
kref_put(&neigh_ifinfo->refcount, batadv_neigh_ifinfo_release);
}
/**
* batadv_hardif_neigh_put() - decrement the hardif neighbors refcounter
* and possibly release it
* @hardif_neigh: hardif neigh neighbor to free
*/
static inline void
batadv_hardif_neigh_put(struct batadv_hardif_neigh_node *hardif_neigh)
{
if (!hardif_neigh)
return;
kref_put(&hardif_neigh->refcount, batadv_hardif_neigh_release);
}
/**
* batadv_neigh_node_put() - decrement the neighbors refcounter and possibly
* release it
* @neigh_node: neigh neighbor to free
*/
static inline void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node)
{
if (!neigh_node)
return;
kref_put(&neigh_node->refcount, batadv_neigh_node_release);
}
/**
* batadv_orig_ifinfo_put() - decrement the refcounter and possibly release
* the orig_ifinfo
* @orig_ifinfo: the orig_ifinfo object to release
*/
static inline void
batadv_orig_ifinfo_put(struct batadv_orig_ifinfo *orig_ifinfo)
{
if (!orig_ifinfo)
return;
kref_put(&orig_ifinfo->refcount, batadv_orig_ifinfo_release);
}
/**
* batadv_orig_node_put() - decrement the orig node refcounter and possibly
* release it
* @orig_node: the orig node to free
*/
static inline void batadv_orig_node_put(struct batadv_orig_node *orig_node)
{
if (!orig_node)
return;
kref_put(&orig_node->refcount, batadv_orig_node_release);
}
#endif /* _NET_BATMAN_ADV_ORIGINATOR_H_ */

39
net/batman-adv/routing.c
View File

@ -101,8 +101,7 @@ static void _batadv_update_route(struct batadv_priv *bat_priv,
}
/* decrease refcount of previous best neighbor */
if (curr_router)
batadv_neigh_node_put(curr_router);
batadv_neigh_node_put(curr_router);
}
/**
@ -128,8 +127,7 @@ void batadv_update_route(struct batadv_priv *bat_priv,
_batadv_update_route(bat_priv, orig_node, recv_if, neigh_node);
out:
if (router)
batadv_neigh_node_put(router);
batadv_neigh_node_put(router);
}
/**
@ -269,10 +267,8 @@ static int batadv_recv_my_icmp_packet(struct batadv_priv *bat_priv,
goto out;
}
out:
if (primary_if)
batadv_hardif_put(primary_if);
if (orig_node)
batadv_orig_node_put(orig_node);
batadv_hardif_put(primary_if);
batadv_orig_node_put(orig_node);
kfree_skb(skb);
@ -324,10 +320,8 @@ static int batadv_recv_icmp_ttl_exceeded(struct batadv_priv *bat_priv,
skb = NULL;
out:
if (primary_if)
batadv_hardif_put(primary_if);
if (orig_node)
batadv_orig_node_put(orig_node);
batadv_hardif_put(primary_if);
batadv_orig_node_put(orig_node);
kfree_skb(skb);
@ -425,8 +419,7 @@ int batadv_recv_icmp_packet(struct sk_buff *skb,
skb = NULL;
put_orig_node:
if (orig_node)
batadv_orig_node_put(orig_node);
batadv_orig_node_put(orig_node);
free_skb:
kfree_skb(skb);
@ -513,8 +506,7 @@ batadv_last_bonding_replace(struct batadv_orig_node *orig_node,
orig_node->last_bonding_candidate = new_candidate;
spin_unlock_bh(&orig_node->neigh_list_lock);
if (old_candidate)
batadv_orig_ifinfo_put(old_candidate);
batadv_orig_ifinfo_put(old_candidate);
}
/**
@ -656,8 +648,7 @@ next:
batadv_orig_ifinfo_put(next_candidate);
}
if (last_candidate)
batadv_orig_ifinfo_put(last_candidate);
batadv_orig_ifinfo_put(last_candidate);
return router;
}
@ -785,10 +776,8 @@ batadv_reroute_unicast_packet(struct batadv_priv *bat_priv, struct sk_buff *skb,
ret = true;
out:
if (primary_if)
batadv_hardif_put(primary_if);
if (orig_node)
batadv_orig_node_put(orig_node);
batadv_hardif_put(primary_if);
batadv_orig_node_put(orig_node);
return ret;
}
@ -1031,8 +1020,7 @@ int batadv_recv_unicast_packet(struct sk_buff *skb,
orig_node);
rx_success:
if (orig_node)
batadv_orig_node_put(orig_node);
batadv_orig_node_put(orig_node);
return NET_RX_SUCCESS;
}
@ -1279,7 +1267,6 @@ free_skb:
kfree_skb(skb);
ret = NET_RX_DROP;
out:
if (orig_node)
batadv_orig_node_put(orig_node);
batadv_orig_node_put(orig_node);
return ret;
}

33
net/batman-adv/send.c
View File

@ -152,8 +152,7 @@ int batadv_send_unicast_skb(struct sk_buff *skb,
if (hardif_neigh && ret != NET_XMIT_DROP)
hardif_neigh->bat_v.last_unicast_tx = jiffies;
if (hardif_neigh)
batadv_hardif_neigh_put(hardif_neigh);
batadv_hardif_neigh_put(hardif_neigh);
#endif
return ret;
@ -309,8 +308,7 @@ bool batadv_send_skb_prepare_unicast_4addr(struct batadv_priv *bat_priv,
ret = true;
out:
if (primary_if)
batadv_hardif_put(primary_if);
batadv_hardif_put(primary_if);
return ret;
}
@ -425,8 +423,7 @@ int batadv_send_skb_via_tt_generic(struct batadv_priv *bat_priv,
ret = batadv_send_skb_unicast(bat_priv, skb, packet_type,
packet_subtype, orig_node, vid);
if (orig_node)
batadv_orig_node_put(orig_node);
batadv_orig_node_put(orig_node);
return ret;
}
@ -452,8 +449,7 @@ int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb,
ret = batadv_send_skb_unicast(bat_priv, skb, BATADV_UNICAST_4ADDR,
BATADV_P_DATA, orig_node, vid);
if (orig_node)
batadv_orig_node_put(orig_node);
batadv_orig_node_put(orig_node);
return ret;
}
@ -474,10 +470,8 @@ void batadv_forw_packet_free(struct batadv_forw_packet *forw_packet,
else
consume_skb(forw_packet->skb);
if (forw_packet->if_incoming)
batadv_hardif_put(forw_packet->if_incoming);
if (forw_packet->if_outgoing)
batadv_hardif_put(forw_packet->if_outgoing);
batadv_hardif_put(forw_packet->if_incoming);
batadv_hardif_put(forw_packet->if_outgoing);
if (forw_packet->queue_left)
atomic_inc(forw_packet->queue_left);
kfree(forw_packet);
@ -748,6 +742,10 @@ void batadv_forw_packet_ogmv1_queue(struct batadv_priv *bat_priv,
* Adds a broadcast packet to the queue and sets up timers. Broadcast packets
* are sent multiple times to increase probability for being received.
*
* This call clones the given skb, hence the caller needs to take into
* account that the data segment of the original skb might not be
* modifiable anymore.
*
* Return: NETDEV_TX_OK on success and NETDEV_TX_BUSY on errors.
*/
static int batadv_forw_bcast_packet_to_list(struct batadv_priv *bat_priv,
@ -761,7 +759,7 @@ static int batadv_forw_bcast_packet_to_list(struct batadv_priv *bat_priv,
unsigned long send_time = jiffies;
struct sk_buff *newskb;
newskb = skb_copy(skb, GFP_ATOMIC);
newskb = skb_clone(skb, GFP_ATOMIC);
if (!newskb)
goto err;
@ -800,6 +798,10 @@ err:
* or if a delay is given after that. Furthermore, queues additional
* retransmissions if this interface is a wireless one.
*
* This call clones the given skb, hence the caller needs to take into
* account that the data segment of the original skb might not be
* modifiable anymore.
*
* Return: NETDEV_TX_OK on success and NETDEV_TX_BUSY on errors.
*/
static int batadv_forw_bcast_packet_if(struct batadv_priv *bat_priv,
@ -814,7 +816,7 @@ static int batadv_forw_bcast_packet_if(struct batadv_priv *bat_priv,
int ret = NETDEV_TX_OK;
if (!delay) {
newskb = skb_copy(skb, GFP_ATOMIC);
newskb = skb_clone(skb, GFP_ATOMIC);
if (!newskb)
return NETDEV_TX_BUSY;
@ -867,8 +869,7 @@ static bool batadv_send_no_broadcast(struct batadv_priv *bat_priv,
ret = batadv_hardif_no_broadcast(if_out, bcast_packet->orig,
orig_neigh);
if (neigh_node)
batadv_hardif_neigh_put(neigh_node);
batadv_hardif_neigh_put(neigh_node);
/* ok, may broadcast */
if (!ret)

27
net/batman-adv/soft-interface.c
View File

@ -383,10 +383,8 @@ dropped:
dropped_freed:
batadv_inc_counter(bat_priv, BATADV_CNT_TX_DROPPED);
end:
if (mcast_single_orig)
batadv_orig_node_put(mcast_single_orig);
if (primary_if)
batadv_hardif_put(primary_if);
batadv_orig_node_put(mcast_single_orig);
batadv_hardif_put(primary_if);
return NETDEV_TX_OK;
}
@ -501,7 +499,7 @@ out:
* after rcu grace period
* @ref: kref pointer of the vlan object
*/
static void batadv_softif_vlan_release(struct kref *ref)
void batadv_softif_vlan_release(struct kref *ref)
{
struct batadv_softif_vlan *vlan;
@ -514,19 +512,6 @@ static void batadv_softif_vlan_release(struct kref *ref)
kfree_rcu(vlan, rcu);
}
/**
* batadv_softif_vlan_put() - decrease the vlan object refcounter and
* possibly release it
* @vlan: the vlan object to release
*/
void batadv_softif_vlan_put(struct batadv_softif_vlan *vlan)
{
if (!vlan)
return;
kref_put(&vlan->refcount, batadv_softif_vlan_release);
}
/**
* batadv_softif_vlan_get() - get the vlan object for a specific vid
* @bat_priv: the bat priv with all the soft interface information
@ -851,8 +836,7 @@ static int batadv_softif_slave_add(struct net_device *dev,
ret = batadv_hardif_enable_interface(hard_iface, dev);
out:
if (hard_iface)
batadv_hardif_put(hard_iface);
batadv_hardif_put(hard_iface);
return ret;
}
@ -878,8 +862,7 @@ static int batadv_softif_slave_del(struct net_device *dev,
ret = 0;
out:
if (hard_iface)
batadv_hardif_put(hard_iface);
batadv_hardif_put(hard_iface);
return ret;
}

16
net/batman-adv/soft-interface.h
View File

@ -9,6 +9,7 @@
#include "main.h"
#include <linux/kref.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <linux/types.h>
@ -21,8 +22,21 @@ void batadv_interface_rx(struct net_device *soft_iface,
bool batadv_softif_is_valid(const struct net_device *net_dev);
extern struct rtnl_link_ops batadv_link_ops;
int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid);
void batadv_softif_vlan_put(struct batadv_softif_vlan *softif_vlan);
void batadv_softif_vlan_release(struct kref *ref);
struct batadv_softif_vlan *batadv_softif_vlan_get(struct batadv_priv *bat_priv,
unsigned short vid);
/**
* batadv_softif_vlan_put() - decrease the vlan object refcounter and
* possibly release it
* @vlan: the vlan object to release
*/
static inline void batadv_softif_vlan_put(struct batadv_softif_vlan *vlan)
{
if (!vlan)
return;
kref_put(&vlan->refcount, batadv_softif_vlan_release);
}
#endif /* _NET_BATMAN_ADV_SOFT_INTERFACE_H_ */

27
net/batman-adv/tp_meter.c
View File

@ -358,6 +358,9 @@ static void batadv_tp_vars_release(struct kref *ref)
*/
static void batadv_tp_vars_put(struct batadv_tp_vars *tp_vars)
{
if (!tp_vars)
return;
kref_put(&tp_vars->refcount, batadv_tp_vars_release);
}
@ -748,12 +751,9 @@ move_twnd:
wake_up(&tp_vars->more_bytes);
out:
if (likely(primary_if))
batadv_hardif_put(primary_if);
if (likely(orig_node))
batadv_orig_node_put(orig_node);
if (likely(tp_vars))
batadv_tp_vars_put(tp_vars);
batadv_hardif_put(primary_if);
batadv_orig_node_put(orig_node);
batadv_tp_vars_put(tp_vars);
}
/**
@ -882,10 +882,8 @@ static int batadv_tp_send(void *arg)
}
out:
if (likely(primary_if))
batadv_hardif_put(primary_if);
if (likely(orig_node))
batadv_orig_node_put(orig_node);
batadv_hardif_put(primary_if);
batadv_orig_node_put(orig_node);
batadv_tp_sender_end(bat_priv, tp_vars);
batadv_tp_sender_cleanup(bat_priv, tp_vars);
@ -1205,10 +1203,8 @@ static int batadv_tp_send_ack(struct batadv_priv *bat_priv, const u8 *dst,
ret = 0;
out:
if (likely(orig_node))
batadv_orig_node_put(orig_node);
if (likely(primary_if))
batadv_hardif_put(primary_if);
batadv_orig_node_put(orig_node);
batadv_hardif_put(primary_if);
return ret;
}
@ -1456,8 +1452,7 @@ send_ack:
batadv_tp_send_ack(bat_priv, icmp->orig, tp_vars->last_recv,
icmp->timestamp, icmp->session, icmp->uid);
out:
if (likely(tp_vars))
batadv_tp_vars_put(tp_vars);
batadv_tp_vars_put(tp_vars);
}
/**

100
net/batman-adv/translation-table.c
View File

@ -247,6 +247,9 @@ static void batadv_tt_local_entry_release(struct kref *ref)
static void
batadv_tt_local_entry_put(struct batadv_tt_local_entry *tt_local_entry)
{
if (!tt_local_entry)
return;
kref_put(&tt_local_entry->common.refcount,
batadv_tt_local_entry_release);
}
@ -270,7 +273,7 @@ static void batadv_tt_global_entry_free_rcu(struct rcu_head *rcu)
* queue for free after rcu grace period
* @ref: kref pointer of the nc_node
*/
static void batadv_tt_global_entry_release(struct kref *ref)
void batadv_tt_global_entry_release(struct kref *ref)
{
struct batadv_tt_global_entry *tt_global_entry;
@ -282,17 +285,6 @@ static void batadv_tt_global_entry_release(struct kref *ref)
call_rcu(&tt_global_entry->common.rcu, batadv_tt_global_entry_free_rcu);
}
/**
* batadv_tt_global_entry_put() - decrement the tt_global_entry refcounter and
* possibly release it
* @tt_global_entry: tt_global_entry to be free'd
*/
void batadv_tt_global_entry_put(struct batadv_tt_global_entry *tt_global_entry)
{
kref_put(&tt_global_entry->common.refcount,
batadv_tt_global_entry_release);
}
/**
* batadv_tt_global_hash_count() - count the number of orig entries
* @bat_priv: the bat priv with all the soft interface information
@ -452,6 +444,9 @@ static void batadv_tt_orig_list_entry_release(struct kref *ref)
static void
batadv_tt_orig_list_entry_put(struct batadv_tt_orig_list_entry *orig_entry)
{
if (!orig_entry)
return;
kref_put(&orig_entry->refcount, batadv_tt_orig_list_entry_release);
}
@ -818,13 +813,10 @@ check_roaming:
ret = true;
out:
if (in_hardif)
batadv_hardif_put(in_hardif);
batadv_hardif_put(in_hardif);
dev_put(in_dev);
if (tt_local)
batadv_tt_local_entry_put(tt_local);
if (tt_global)
batadv_tt_global_entry_put(tt_global);
batadv_tt_local_entry_put(tt_local);
batadv_tt_global_entry_put(tt_global);
return ret;
}
@ -1214,8 +1206,7 @@ int batadv_tt_local_dump(struct sk_buff *msg, struct netlink_callback *cb)
ret = msg->len;
out:
if (primary_if)
batadv_hardif_put(primary_if);
batadv_hardif_put(primary_if);
dev_put(soft_iface);
cb->args[0] = bucket;
@ -1303,8 +1294,7 @@ u16 batadv_tt_local_remove(struct batadv_priv *bat_priv, const u8 *addr,
batadv_tt_local_entry_put(tt_removed_entry);
out:
if (tt_local_entry)
batadv_tt_local_entry_put(tt_local_entry);
batadv_tt_local_entry_put(tt_local_entry);
return curr_flags;
}
@ -1574,8 +1564,7 @@ batadv_tt_global_orig_entry_add(struct batadv_tt_global_entry *tt_global,
sync_flags:
batadv_tt_global_sync_flags(tt_global);
out:
if (orig_entry)
batadv_tt_orig_list_entry_put(orig_entry);
batadv_tt_orig_list_entry_put(orig_entry);
spin_unlock_bh(&tt_global->list_lock);
}
@ -1748,10 +1737,8 @@ out_remove:
tt_global_entry->common.flags &= ~BATADV_TT_CLIENT_ROAM;
out:
if (tt_global_entry)
batadv_tt_global_entry_put(tt_global_entry);
if (tt_local_entry)
batadv_tt_local_entry_put(tt_local_entry);
batadv_tt_global_entry_put(tt_global_entry);
batadv_tt_local_entry_put(tt_local_entry);
return ret;
}
@ -1787,15 +1774,13 @@ batadv_transtable_best_orig(struct batadv_priv *bat_priv,
}
/* release the refcount for the "old" best */
if (best_router)
batadv_neigh_node_put(best_router);
batadv_neigh_node_put(best_router);
best_entry = orig_entry;
best_router = router;
}
if (best_router)
batadv_neigh_node_put(best_router);
batadv_neigh_node_put(best_router);
return best_entry;
}
@ -2001,8 +1986,7 @@ int batadv_tt_global_dump(struct sk_buff *msg, struct netlink_callback *cb)
ret = msg->len;
out:
if (primary_if)
batadv_hardif_put(primary_if);
batadv_hardif_put(primary_if);
dev_put(soft_iface);
cb->args[0] = bucket;
@ -2193,10 +2177,8 @@ static void batadv_tt_global_del(struct batadv_priv *bat_priv,
}
out:
if (tt_global_entry)
batadv_tt_global_entry_put(tt_global_entry);
if (local_entry)
batadv_tt_local_entry_put(local_entry);
batadv_tt_global_entry_put(tt_global_entry);
batadv_tt_local_entry_put(local_entry);
}
/**
@ -2423,10 +2405,8 @@ struct batadv_orig_node *batadv_transtable_search(struct batadv_priv *bat_priv,
rcu_read_unlock();
out:
if (tt_global_entry)
batadv_tt_global_entry_put(tt_global_entry);
if (tt_local_entry)
batadv_tt_local_entry_put(tt_local_entry);
batadv_tt_global_entry_put(tt_global_entry);
batadv_tt_local_entry_put(tt_local_entry);
return orig_node;
}
@ -2603,6 +2583,9 @@ static void batadv_tt_req_node_release(struct kref *ref)
*/
static void batadv_tt_req_node_put(struct batadv_tt_req_node *tt_req_node)
{
if (!tt_req_node)
return;
kref_put(&tt_req_node->refcount, batadv_tt_req_node_release);
}
@ -2984,8 +2967,7 @@ static bool batadv_send_tt_request(struct batadv_priv *bat_priv,
ret = true;
out:
if (primary_if)
batadv_hardif_put(primary_if);
batadv_hardif_put(primary_if);
if (ret && tt_req_node) {
spin_lock_bh(&bat_priv->tt.req_list_lock);
@ -2996,8 +2978,7 @@ out:
spin_unlock_bh(&bat_priv->tt.req_list_lock);
}
if (tt_req_node)
batadv_tt_req_node_put(tt_req_node);
batadv_tt_req_node_put(tt_req_node);
kfree(tvlv_tt_data);
return ret;
@ -3128,10 +3109,8 @@ unlock:
spin_unlock_bh(&req_dst_orig_node->tt_buff_lock);
out:
if (res_dst_orig_node)
batadv_orig_node_put(res_dst_orig_node);
if (req_dst_orig_node)
batadv_orig_node_put(req_dst_orig_node);
batadv_orig_node_put(res_dst_orig_node);
batadv_orig_node_put(req_dst_orig_node);
kfree(tvlv_tt_data);
return ret;
}
@ -3245,10 +3224,8 @@ unlock:
spin_unlock_bh(&bat_priv->tt.last_changeset_lock);
out:
spin_unlock_bh(&bat_priv->tt.commit_lock);
if (orig_node)
batadv_orig_node_put(orig_node);
if (primary_if)
batadv_hardif_put(primary_if);
batadv_orig_node_put(orig_node);
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;
@ -3333,8 +3310,7 @@ static void batadv_tt_fill_gtable(struct batadv_priv *bat_priv,
atomic_set(&orig_node->last_ttvn, ttvn);
out:
if (orig_node)
batadv_orig_node_put(orig_node);
batadv_orig_node_put(orig_node);
}
static void batadv_tt_update_changes(struct batadv_priv *bat_priv,
@ -3375,8 +3351,7 @@ bool batadv_is_my_client(struct batadv_priv *bat_priv, const u8 *addr,
goto out;
ret = true;
out:
if (tt_local_entry)
batadv_tt_local_entry_put(tt_local_entry);
batadv_tt_local_entry_put(tt_local_entry);
return ret;
}
@ -3439,8 +3414,7 @@ static void batadv_handle_tt_response(struct batadv_priv *bat_priv,
spin_unlock_bh(&bat_priv->tt.req_list_lock);
out:
if (orig_node)
batadv_orig_node_put(orig_node);
batadv_orig_node_put(orig_node);
}
static void batadv_tt_roam_list_free(struct batadv_priv *bat_priv)
@ -3571,8 +3545,7 @@ static void batadv_send_roam_adv(struct batadv_priv *bat_priv, u8 *client,
&tvlv_roam, sizeof(tvlv_roam));
out:
if (primary_if)
batadv_hardif_put(primary_if);
batadv_hardif_put(primary_if);
}
static void batadv_tt_purge(struct work_struct *work)
@ -4167,8 +4140,7 @@ static int batadv_roam_tvlv_unicast_handler_v1(struct batadv_priv *bat_priv,
atomic_read(&orig_node->last_ttvn) + 1);
out:
if (orig_node)
batadv_orig_node_put(orig_node);
batadv_orig_node_put(orig_node);
return NET_RX_SUCCESS;
}

18
net/batman-adv/translation-table.h
View File

@ -9,6 +9,7 @@
#include "main.h"
#include <linux/kref.h>
#include <linux/netdevice.h>
#include <linux/netlink.h>
#include <linux/skbuff.h>
@ -28,7 +29,7 @@ void batadv_tt_global_del_orig(struct batadv_priv *bat_priv,
struct batadv_tt_global_entry *
batadv_tt_global_hash_find(struct batadv_priv *bat_priv, const u8 *addr,
unsigned short vid);
void batadv_tt_global_entry_put(struct batadv_tt_global_entry *tt_global_entry);
void batadv_tt_global_entry_release(struct kref *ref);
int batadv_tt_global_hash_count(struct batadv_priv *bat_priv,
const u8 *addr, unsigned short vid);
struct batadv_orig_node *batadv_transtable_search(struct batadv_priv *bat_priv,
@ -55,4 +56,19 @@ bool batadv_tt_global_is_isolated(struct batadv_priv *bat_priv,
int batadv_tt_cache_init(void);
void batadv_tt_cache_destroy(void);
/**
* batadv_tt_global_entry_put() - decrement the tt_global_entry refcounter and
* possibly release it
* @tt_global_entry: tt_global_entry to be free'd
*/
static inline void
batadv_tt_global_entry_put(struct batadv_tt_global_entry *tt_global_entry)
{
if (!tt_global_entry)
return;
kref_put(&tt_global_entry->common.refcount,
batadv_tt_global_entry_release);
}
#endif /* _NET_BATMAN_ADV_TRANSLATION_TABLE_H_ */

9
net/batman-adv/tvlv.c
View File

@ -50,6 +50,9 @@ static void batadv_tvlv_handler_release(struct kref *ref)
*/
static void batadv_tvlv_handler_put(struct batadv_tvlv_handler *tvlv_handler)
{
if (!tvlv_handler)
return;
kref_put(&tvlv_handler->refcount, batadv_tvlv_handler_release);
}
@ -106,6 +109,9 @@ static void batadv_tvlv_container_release(struct kref *ref)
*/
static void batadv_tvlv_container_put(struct batadv_tvlv_container *tvlv)
{
if (!tvlv)
return;
kref_put(&tvlv->refcount, batadv_tvlv_container_release);
}
@ -438,8 +444,7 @@ int batadv_tvlv_containers_process(struct batadv_priv *bat_priv,
ogm_source, orig_node,
src, dst, tvlv_value,
tvlv_value_cont_len);
if (tvlv_handler)
batadv_tvlv_handler_put(tvlv_handler);
batadv_tvlv_handler_put(tvlv_handler);
tvlv_value = (u8 *)tvlv_value + tvlv_value_cont_len;
tvlv_value_len -= tvlv_value_cont_len;
}