From 0befd061af59c4ba426588930f09eb9ea2475534 Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Tue, 2 Jan 2018 12:50:12 +0100 Subject: [PATCH] netfilter: nf_tables: remove nft_dereference() This macro is unnecessary, it just hides details for one single caller. nfnl_dereference() is just enough. Signed-off-by: Pablo Neira Ayuso --- include/net/netfilter/nf_tables.h | 3 --- net/netfilter/nf_tables_api.c | 6 +++--- 2 files changed, 3 insertions(+), 6 deletions(-) diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h index e040b61..e3ec02f 100644 --- a/include/net/netfilter/nf_tables.h +++ b/include/net/netfilter/nf_tables.h @@ -1113,9 +1113,6 @@ void nft_trace_init(struct nft_traceinfo *info, const struct nft_pktinfo *pkt, void nft_trace_notify(struct nft_traceinfo *info); -#define nft_dereference(p) \ - nfnl_dereference(p, NFNL_SUBSYS_NFTABLES) - #define MODULE_ALIAS_NFT_FAMILY(family) \ MODULE_ALIAS("nft-afinfo-" __stringify(family)) diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index 15773a3..fa564da 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -1222,13 +1222,13 @@ static struct nft_stats __percpu *nft_stats_alloc(const struct nlattr *attr) static void nft_chain_stats_replace(struct nft_base_chain *chain, struct nft_stats __percpu *newstats) { + struct nft_stats __percpu *oldstats; + if (newstats == NULL) return; if (chain->stats) { - struct nft_stats __percpu *oldstats = - nft_dereference(chain->stats); - + oldstats = nfnl_dereference(chain->stats, NFNL_SUBSYS_NFTABLES); rcu_assign_pointer(chain->stats, newstats); synchronize_rcu(); free_percpu(oldstats); -- 2.7.4