netdev - Re: [PATCH net-next 1/2] netlink: ipv4 IGMP join notifications

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Date:   Fri, 31 Aug 2018 12:23:20 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Patrick Ruddy <pruddy@...tta.att-mail.com>
Cc:     kbuild-all@...org, netdev@...r.kernel.org,
        roopa@...ulusnetworks.com, jiri@...nulli.us,
        stephen@...workplumber.org
Subject: Re: [PATCH net-next 1/2] netlink: ipv4 IGMP join notifications

Hi Patrick,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on net-next/master]

url:    https://github.com/0day-ci/linux/commits/Patrick-Ruddy/netlink-ipv4-IGMP-join-notifications/20180831-105548
config: i386-randconfig-s0-201834 (attached as .config)
compiler: gcc-6 (Debian 6.4.0-9) 6.4.0 20171026
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

   In file included from net//ipv4/udp.c:92:0:
>> include/linux/igmp.h:133:58: warning: 'struct netlink_callback' declared inside parameter list will not be visible outside of this definition or declaration
    extern int ip_mc_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb,
                                                             ^~~~~~~~~~~~~~~~

vim +133 include/linux/igmp.h

   108	
   109	extern int ip_check_mc_rcu(struct in_device *dev, __be32 mc_addr, __be32 src_addr, u8 proto);
   110	extern int igmp_rcv(struct sk_buff *);
   111	extern int ip_mc_join_group(struct sock *sk, struct ip_mreqn *imr);
   112	extern int ip_mc_join_group_ssm(struct sock *sk, struct ip_mreqn *imr,
   113					unsigned int mode);
   114	extern int ip_mc_leave_group(struct sock *sk, struct ip_mreqn *imr);
   115	extern void ip_mc_drop_socket(struct sock *sk);
   116	extern int ip_mc_source(int add, int omode, struct sock *sk,
   117			struct ip_mreq_source *mreqs, int ifindex);
   118	extern int ip_mc_msfilter(struct sock *sk, struct ip_msfilter *msf,int ifindex);
   119	extern int ip_mc_msfget(struct sock *sk, struct ip_msfilter *msf,
   120			struct ip_msfilter __user *optval, int __user *optlen);
   121	extern int ip_mc_gsfget(struct sock *sk, struct group_filter *gsf,
   122			struct group_filter __user *optval, int __user *optlen);
   123	extern int ip_mc_sf_allow(struct sock *sk, __be32 local, __be32 rmt,
   124				  int dif, int sdif);
   125	extern void ip_mc_init_dev(struct in_device *);
   126	extern void ip_mc_destroy_dev(struct in_device *);
   127	extern void ip_mc_up(struct in_device *);
   128	extern void ip_mc_down(struct in_device *);
   129	extern void ip_mc_unmap(struct in_device *);
   130	extern void ip_mc_remap(struct in_device *);
   131	extern void ip_mc_dec_group(struct in_device *in_dev, __be32 addr);
   132	extern void ip_mc_inc_group(struct in_device *in_dev, __be32 addr);
 > 133	extern int ip_mc_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb,
   134				     struct net_device *dev);
   135	int ip_mc_check_igmp(struct sk_buff *skb, struct sk_buff **skb_trimmed);
   136	

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0-DAY kernel test infrastructure                Open Source Technology Center
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