* [PATCH nf-next] netfilter: nf_tables: remove nft_dereference()
@ 2017-12-30 23:14 Pablo Neira Ayuso
0 siblings, 0 replies; only message in thread
From: Pablo Neira Ayuso @ 2017-12-30 23:14 UTC (permalink / raw)
To: netfilter-devel
This macro is unnecessary, it just hides details for one single caller.
nfnl_dereference() is just enough.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
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 730f2898ef66..2e907f695828 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -1092,9 +1092,6 @@ void nft_trace_notify(struct nft_traceinfo *info);
int nf_tables_filter_init(void);
void nf_tables_filter_fini(void);
-#define nft_dereference(p) \
- nfnl_dereference(p, NFNL_SUBSYS_NFTABLES)
-
#define MODULE_ALIAS_NFT_CHAIN(family, name) \
MODULE_ALIAS("nft-chain-" __stringify(family) "-" name)
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index c6289404207b..903fb9bd0147 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -1115,13 +1115,13 @@ 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);
--
2.11.0
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2017-12-30 23:14 [PATCH nf-next] netfilter: nf_tables: remove nft_dereference() Pablo Neira Ayuso
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