From 679972f3bef8df7aa04cc99b46f71392ebf0b5f8 Mon Sep 17 00:00:00 2001 From: Aaron Conole Date: Tue, 15 Nov 2016 17:48:46 -0500 Subject: [PATCH] netfilter: convert while loops to for loops This is to facilitate converting from a singly-linked list to an array of elements. Signed-off-by: Aaron Conole Signed-off-by: Pablo Neira Ayuso --- net/bridge/br_netfilter_hooks.c | 8 ++++---- net/netfilter/core.c | 6 ++---- 2 files changed, 6 insertions(+), 8 deletions(-) diff --git a/net/bridge/br_netfilter_hooks.c b/net/bridge/br_netfilter_hooks.c index adad2eed29e6..b12501a77f18 100644 --- a/net/bridge/br_netfilter_hooks.c +++ b/net/bridge/br_netfilter_hooks.c @@ -1008,10 +1008,10 @@ int br_nf_hook_thresh(unsigned int hook, struct net *net, struct nf_hook_state state; int ret; - elem = rcu_dereference(net->nf.hooks[NFPROTO_BRIDGE][hook]); - - while (elem && (nf_hook_entry_priority(elem) <= NF_BR_PRI_BRNF)) - elem = rcu_dereference(elem->next); + for (elem = rcu_dereference(net->nf.hooks[NFPROTO_BRIDGE][hook]); + elem && nf_hook_entry_priority(elem) <= NF_BR_PRI_BRNF; + elem = rcu_dereference(elem->next)) + ; if (!elem) return okfn(net, sk, skb); diff --git a/net/netfilter/core.c b/net/netfilter/core.c index 2bb46e2d8d30..ce6adfae521a 100644 --- a/net/netfilter/core.c +++ b/net/netfilter/core.c @@ -107,10 +107,9 @@ int nf_register_net_hook(struct net *net, const struct nf_hook_ops *reg) mutex_lock(&nf_hook_mutex); /* Find the spot in the list */ - while ((p = nf_entry_dereference(*pp)) != NULL) { + for (; (p = nf_entry_dereference(*pp)) != NULL; pp = &p->next) { if (reg->priority < nf_hook_entry_priority(p)) break; - pp = &p->next; } rcu_assign_pointer(entry->next, p); rcu_assign_pointer(*pp, entry); @@ -137,12 +136,11 @@ void nf_unregister_net_hook(struct net *net, const struct nf_hook_ops *reg) return; mutex_lock(&nf_hook_mutex); - while ((p = nf_entry_dereference(*pp)) != NULL) { + for (; (p = nf_entry_dereference(*pp)) != NULL; pp = &p->next) { if (nf_hook_entry_ops(p) == reg) { rcu_assign_pointer(*pp, p->next); break; } - pp = &p->next; } mutex_unlock(&nf_hook_mutex); if (!p) { -- 2.20.1