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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 <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso 2018-01-02 12:50:12 +01:00
parent a7f87b47e6
commit 0befd061af
2 changed files with 3 additions and 6 deletions
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3
include/net/netfilter/nf_tables.h
View File

@ -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))

6
net/netfilter/nf_tables_api.c
View File

@ -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);