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Subject[cilium:pr/meta4 2/2] net/core/dev.c:3958:14: warning: no previous prototype for 'sch_cls_ingress'
tree:   https://github.com/cilium/linux.git pr/meta4
head: dcea837b60f0d9f8f3cdae284680659042f560d1
commit: dcea837b60f0d9f8f3cdae284680659042f560d1 [2/2] bpf: Add fd-based API to attach tc BPF programs
config: x86_64-randconfig-a013 (https://download.01.org/0day-ci/archive/20220618/202206180559.JlBsXKyh-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-3) 11.3.0
reproduce (this is a W=1 build):
# https://github.com/cilium/linux/commit/dcea837b60f0d9f8f3cdae284680659042f560d1
git remote add cilium https://github.com/cilium/linux.git
git fetch --no-tags cilium pr/meta4
git checkout dcea837b60f0d9f8f3cdae284680659042f560d1
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash net/core/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> net/core/dev.c:3958:14: warning: no previous prototype for 'sch_cls_ingress' [-Wmissing-prototypes]
3958 | unsigned int sch_cls_ingress(const void *pskb, const struct bpf_insn *null)
| ^~~~~~~~~~~~~~~
>> net/core/dev.c:3998:14: warning: no previous prototype for 'sch_cls_egress' [-Wmissing-prototypes]
3998 | unsigned int sch_cls_egress(const void *pskb, const struct bpf_insn *null)
| ^~~~~~~~~~~~~~


vim +/sch_cls_ingress +3958 net/core/dev.c

3955
3956 #ifdef CONFIG_NET_XGRESS
3957 #ifdef CONFIG_NET_CLS_ACT
> 3958 unsigned int sch_cls_ingress(const void *pskb, const struct bpf_insn *null)
3959 {
3960 struct sk_buff *skb = (void *)pskb;
3961 struct mini_Qdisc *miniq;
3962 struct tcf_result res;
3963 int ret;
3964
3965 tc_skb_cb(skb)->mru = 0;
3966 tc_skb_cb(skb)->post_ct = false;
3967
3968 miniq = dev_sch_entry_pair(skb->dev->sch_ingress)->miniq;
3969 if (!miniq)
3970 return TC_ACT_UNSPEC;
3971 mini_qdisc_bstats_cpu_update(miniq, skb);
3972 __skb_pull(skb, skb->mac_len);
3973 ret = tcf_classify(skb, miniq->block, miniq->filter_list, &res, false);
3974 __skb_push(skb, skb->mac_len);
3975 /* Only tcf related quirks below. */
3976 switch (ret) {
3977 case TC_ACT_SHOT:
3978 mini_qdisc_qstats_cpu_drop(miniq);
3979 break;
3980 case TC_ACT_OK:
3981 case TC_ACT_RECLASSIFY:
3982 skb->tc_index = TC_H_MIN(res.classid);
3983 ret = TC_ACT_OK;
3984 break;
3985 case TC_ACT_STOLEN:
3986 case TC_ACT_QUEUED:
3987 case TC_ACT_TRAP:
3988 ret = TC_ACT_CONSUMED;
3989 break;
3990 case TC_ACT_CONSUMED:
3991 /* Bump refcount given skb is now in use elsewhere. */
3992 skb_get(skb);
3993 break;
3994 }
3995 return ret;
3996 }
3997
> 3998 unsigned int sch_cls_egress(const void *pskb, const struct bpf_insn *null)
3999 {
4000 struct sk_buff *skb = (void *)pskb;
4001 struct mini_Qdisc *miniq;
4002 struct tcf_result res;
4003 int ret;
4004
4005 tc_skb_cb(skb)->mru = 0;
4006 tc_skb_cb(skb)->post_ct = false;
4007
4008 miniq = dev_sch_entry_pair(skb->dev->sch_egress)->miniq;
4009 if (!miniq)
4010 return TC_ACT_UNSPEC;
4011 mini_qdisc_bstats_cpu_update(miniq, skb);
4012 ret = tcf_classify(skb, miniq->block, miniq->filter_list, &res, false);
4013 /* Only tcf related quirks below. */
4014 switch (ret) {
4015 case TC_ACT_SHOT:
4016 mini_qdisc_qstats_cpu_drop(miniq);
4017 break;
4018 case TC_ACT_OK:
4019 case TC_ACT_RECLASSIFY:
4020 skb->tc_index = TC_H_MIN(res.classid);
4021 ret = TC_ACT_OK;
4022 break;
4023 case TC_ACT_STOLEN:
4024 case TC_ACT_QUEUED:
4025 case TC_ACT_TRAP:
4026 ret = TC_ACT_CONSUMED;
4027 break;
4028 case TC_ACT_CONSUMED:
4029 /* Bump refcount given skb is now in use elsewhere. */
4030 skb_get(skb);
4031 break;
4032 }
4033 return ret;
4034 }
4035 #endif /* CONFIG_NET_CLS_ACT */
4036

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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