Subject: Re: [PATCH v5 4/4] net: diag: Support destroying TCP sockets.

From: kbuild test robot <[email-masked]>
Date: Tue, 15 Dec 2015 01:51:02 +0800

Hi Lorenzo,

[auto build test WARNING on net/master]
[also build test WARNING on v4.4-rc5]
[cannot apply to next-20151214]

url:    https://github.com/0day-ci/linux/commits/Lorenzo-Colitti/net-diag-Add-the-ability-to-destroy-a-socket/20151215-013254
config: x86_64-randconfig-x013-12141150 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

   In file included from net/ipv4/route.c:103:0:
>> include/net/tcp.h:1173:5: warning: "CONFIG_INET_DIAG_DESTROY" is not defined [-Wundef]
    #if CONFIG_INET_DIAG_DESTROY
        ^
   In file included from net/ipv4/route.c:103:0:
>> include/net/tcp.h:1173:5: warning: "CONFIG_INET_DIAG_DESTROY" is not defined [-Wundef]
    #if CONFIG_INET_DIAG_DESTROY
        ^
--
   In file included from net/ipv4/ip_forward.c:31:0:
>> include/net/tcp.h:1173:5: warning: "CONFIG_INET_DIAG_DESTROY" is not defined [-Wundef]
    #if CONFIG_INET_DIAG_DESTROY
        ^

vim +/CONFIG_INET_DIAG_DESTROY +1173 include/net/tcp.h

  1157	
  1158	bool tcp_prequeue(struct sock *sk, struct sk_buff *skb);
  1159	
  1160	#undef STATE_TRACE
  1161	
  1162	#ifdef STATE_TRACE
  1163	static const char *statename[]={
  1164		"Unused","Established","Syn Sent","Syn Recv",
  1165		"Fin Wait 1","Fin Wait 2","Time Wait", "Close",
  1166		"Close Wait","Last ACK","Listen","Closing"
  1167	};
  1168	#endif
  1169	void tcp_set_state(struct sock *sk, int state);
  1170	
  1171	void tcp_done(struct sock *sk);
  1172	
> 1173	#if CONFIG_INET_DIAG_DESTROY
  1174	int tcp_abort(struct sock *sk);
  1175	#endif
  1176	
  1177	static inline void tcp_sack_reset(struct tcp_options_received *rx_opt)
  1178	{
  1179		rx_opt->dsack = 0;
  1180		rx_opt->num_sacks = 0;
  1181	}

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