From: Pablo Neira Ayuso <pablo@netfilter.org>
To: netfilter-devel@vger.kernel.org
Cc: davem@davemloft.net, netdev@vger.kernel.org, kuba@kernel.org
Subject: [PATCH nf-next 15/15] netfilter: core: Fix clang warnings about unused static inlines
Date: Mon, 18 Oct 2021 00:15:22 +0200 [thread overview]
Message-ID: <20211017221522.853838-16-pablo@netfilter.org> (raw)
In-Reply-To: <20211017221522.853838-1-pablo@netfilter.org>
From: Lukas Wunner <lukas@wunner.de>
Unlike gcc, clang warns about unused static inlines that are not in an
include file:
net/netfilter/core.c:344:20: error: unused function 'nf_ingress_hook' [-Werror,-Wunused-function]
static inline bool nf_ingress_hook(const struct nf_hook_ops *reg, int pf)
^
net/netfilter/core.c:353:20: error: unused function 'nf_egress_hook' [-Werror,-Wunused-function]
static inline bool nf_egress_hook(const struct nf_hook_ops *reg, int pf)
^
According to commit 6863f5643dd7 ("kbuild: allow Clang to find unused
static inline functions for W=1 build"), the proper resolution is to
mark the affected functions as __maybe_unused. An alternative approach
would be to move them to include/linux/netfilter_netdev.h, but since
Pablo didn't do that in commit ddcfa710d40b ("netfilter: add
nf_ingress_hook() helper function"), I'm guessing __maybe_unused is
preferred.
This fixes both the warning introduced by Pablo in v5.10 as well as the
one recently introduced by myself with commit 42df6e1d221d ("netfilter:
Introduce egress hook").
Fixes: ddcfa710d40b ("netfilter: add nf_ingress_hook() helper function")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/netfilter/core.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/net/netfilter/core.c b/net/netfilter/core.c
index 3a32a813fcde..6dec9cd395f1 100644
--- a/net/netfilter/core.c
+++ b/net/netfilter/core.c
@@ -341,7 +341,8 @@ static int nf_ingress_check(struct net *net, const struct nf_hook_ops *reg,
return 0;
}
-static inline bool nf_ingress_hook(const struct nf_hook_ops *reg, int pf)
+static inline bool __maybe_unused nf_ingress_hook(const struct nf_hook_ops *reg,
+ int pf)
{
if ((pf == NFPROTO_NETDEV && reg->hooknum == NF_NETDEV_INGRESS) ||
(pf == NFPROTO_INET && reg->hooknum == NF_INET_INGRESS))
@@ -350,7 +351,8 @@ static inline bool nf_ingress_hook(const struct nf_hook_ops *reg, int pf)
return false;
}
-static inline bool nf_egress_hook(const struct nf_hook_ops *reg, int pf)
+static inline bool __maybe_unused nf_egress_hook(const struct nf_hook_ops *reg,
+ int pf)
{
return pf == NFPROTO_NETDEV && reg->hooknum == NF_NETDEV_EGRESS;
}
--
2.30.2
prev parent reply other threads:[~2021-10-17 22:15 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-17 22:15 [PATCH nf-next 00/15] Netfilter/IPVS updates for net-next Pablo Neira Ayuso
2021-10-17 22:15 ` [PATCH nf-next 01/15] ipvs: add sysctl_run_estimation to support disable estimation Pablo Neira Ayuso
2021-10-17 22:15 ` [PATCH nf-next 02/15] netfilter: nft_dynset: relax superfluous check on set updates Pablo Neira Ayuso
2021-10-17 22:15 ` [PATCH nf-next 03/15] netfilter: Rename ingress hook include file Pablo Neira Ayuso
2021-10-17 22:15 ` [PATCH nf-next 04/15] netfilter: Generalize " Pablo Neira Ayuso
2021-10-17 22:15 ` [PATCH nf-next 05/15] netfilter: Introduce egress hook Pablo Neira Ayuso
2021-10-17 22:15 ` [PATCH nf-next 06/15] af_packet: " Pablo Neira Ayuso
2021-10-17 22:15 ` [PATCH nf-next 07/15] netfilter: iptables: allow use of ipt_do_table as hookfn Pablo Neira Ayuso
2021-10-17 22:15 ` [PATCH nf-next 08/15] netfilter: arp_tables: allow use of arpt_do_table " Pablo Neira Ayuso
2021-10-17 22:15 ` [PATCH nf-next 09/15] netfilter: ip6tables: allow use of ip6t_do_table " Pablo Neira Ayuso
2021-10-17 22:15 ` [PATCH nf-next 10/15] netfilter: ebtables: allow use of ebt_do_table " Pablo Neira Ayuso
2021-10-17 22:15 ` [PATCH nf-next 11/15] netfilter: ipvs: prepare for hook function reduction Pablo Neira Ayuso
2021-10-17 22:15 ` [PATCH nf-next 12/15] netfilter: ipvs: remove unneeded output wrappers Pablo Neira Ayuso
2021-10-17 22:15 ` [PATCH nf-next 13/15] netfilter: ipvs: remove unneeded input wrappers Pablo Neira Ayuso
2021-10-17 22:15 ` [PATCH nf-next 14/15] netfilter: ipvs: merge ipv4 + ipv6 icmp reply handlers Pablo Neira Ayuso
2021-10-17 22:15 ` Pablo Neira Ayuso [this message]
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