2022-03-21 23:03:51

by Jakob Koschel

[permalink] [raw]
Subject: [PATCH] netfilter: nf_tables: replace unnecessary use of list_for_each_entry_continue()

Since there is no way for the previous list_for_each_entry() to exit
early, this call to list_for_each_entry_continue() is always guaranteed
to start with the first element of the list and can therefore be
replaced with a call to list_for_each_entry().

In preparation to limit the scope of the list iterator to the list
traversal loop, the list iterator variable 'rule' should not be used
past the loop.

Signed-off-by: Jakob Koschel <[email protected]>
---
net/netfilter/nf_tables_api.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index d71a33ae39b3..bdd80136ef1d 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -8299,7 +8299,7 @@ static int nf_tables_commit_chain_prepare(struct net *net, struct nft_chain *cha
data_boundary = data + data_size;
size = 0;

- list_for_each_entry_continue(rule, &chain->rules, list) {
+ list_for_each_entry(rule, &chain->rules, list) {
if (!nft_is_active_next(net, rule))
continue;


base-commit: 34e047aa16c0123bbae8e2f6df33e5ecc1f56601
--
2.25.1