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| author | Lukas Wunner <lukas@wunner.de> | 2021-10-16 10:13:27 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2021-10-17 15:49:08 +0200 |
| commit | ffdd33dd9c12a8c263f78d778066709ef94671f9 (patch) | |
| tree | 2ca3b55d38f3ad44fbee4eec33ea37cef403ce2c /net/netfilter | |
| parent | c650c35a2506d8eebe8a4d8d263317fba29fe078 (diff) | |
| download | linux-ffdd33dd9c12a8c263f78d778066709ef94671f9.tar.bz2 | |
netfilter: core: Fix clang warnings about unused static inlines
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>
Diffstat (limited to 'net/netfilter')
| -rw-r--r-- | net/netfilter/core.c | 6 |
1 files 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; } |