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authorEric Dumazet <edumazet@google.com>2019-04-23 04:35:02 +0300
committerDavid S. Miller <davem@davemloft.net>2019-04-24 03:19:48 +0300
commit5ea715289af6e7d0459c8f279c70557a9ee4f322 (patch)
treee2c3c14702735b438d128f3010d74836b94465fd /net/ipv6
parentb0270550229b3efeadfcac1cf04415dfea27915e (diff)
downloadlinux-5ea715289af6e7d0459c8f279c70557a9ee4f322.tar.xz
ipv6: broadly use fib6_info_hold() helper
Instead of using atomic_inc(), prefer fib6_info_hold() so that upcoming refcount_t conversion is simpler. Only fib6_info_alloc() is using atomic_set() since we just allocated a new object. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Wei Wang <weiwan@google.com> Acked-by: Wei Wang <weiwan@google.com> Reviewed-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/ip6_fib.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index 551938591529..a5e83593e0e4 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -162,7 +162,7 @@ struct fib6_info *fib6_info_alloc(gfp_t gfp_flags)
}
INIT_LIST_HEAD(&f6i->fib6_siblings);
- atomic_inc(&f6i->fib6_ref);
+ atomic_set(&f6i->fib6_ref, 1);
return f6i;
}
@@ -846,8 +846,8 @@ insert_above:
RCU_INIT_POINTER(in->parent, pn);
in->leaf = fn->leaf;
- atomic_inc(&rcu_dereference_protected(in->leaf,
- lockdep_is_held(&table->tb6_lock))->fib6_ref);
+ fib6_info_hold(rcu_dereference_protected(in->leaf,
+ lockdep_is_held(&table->tb6_lock)));
/* update parent pointer */
if (dir)
@@ -942,7 +942,7 @@ static void fib6_purge_rt(struct fib6_info *rt, struct fib6_node *fn,
struct fib6_info *new_leaf;
if (!(fn->fn_flags & RTN_RTINFO) && leaf == rt) {
new_leaf = fib6_find_prefix(net, table, fn);
- atomic_inc(&new_leaf->fib6_ref);
+ fib6_info_hold(new_leaf);
rcu_assign_pointer(fn->leaf, new_leaf);
fib6_info_release(rt);
@@ -1108,7 +1108,7 @@ add:
return err;
rcu_assign_pointer(rt->fib6_next, iter);
- atomic_inc(&rt->fib6_ref);
+ fib6_info_hold(rt);
rcu_assign_pointer(rt->fib6_node, fn);
rcu_assign_pointer(*ins, rt);
if (!info->skip_notify)
@@ -1136,7 +1136,7 @@ add:
if (err)
return err;
- atomic_inc(&rt->fib6_ref);
+ fib6_info_hold(rt);
rcu_assign_pointer(rt->fib6_node, fn);
rt->fib6_next = iter->fib6_next;
rcu_assign_pointer(*ins, rt);
@@ -1278,7 +1278,7 @@ int fib6_add(struct fib6_node *root, struct fib6_info *rt,
if (!sfn)
goto failure;
- atomic_inc(&info->nl_net->ipv6.fib6_null_entry->fib6_ref);
+ fib6_info_hold(info->nl_net->ipv6.fib6_null_entry);
rcu_assign_pointer(sfn->leaf,
info->nl_net->ipv6.fib6_null_entry);
sfn->fn_flags = RTN_ROOT;
@@ -1321,7 +1321,7 @@ int fib6_add(struct fib6_node *root, struct fib6_info *rt,
rcu_assign_pointer(fn->leaf,
info->nl_net->ipv6.fib6_null_entry);
} else {
- atomic_inc(&rt->fib6_ref);
+ fib6_info_hold(rt);
rcu_assign_pointer(fn->leaf, rt);
}
}