netdev - Re: [PATCH] arp: do neigh confirm based on sk arg

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Date:   Wed, 14 Dec 2016 20:56:05 +0800
From:   kbuild test robot <lkp@...el.com>
To:     YueHaibing <yuehaibing@...wei.com>
Cc:     kbuild-all@...org, Julian Anastasov <ja@....bg>,
        Hannes Frederic Sowa <hannes@...essinduktion.org>,
        Eric Dumazet <eric.dumazet@...il.com>,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [PATCH] arp: do neigh confirm based on sk arg

Hi YueHaibing,

[auto build test WARNING on v4.9-rc8]
[cannot apply to net/master net-next/master sparc-next/master next-20161214]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/YueHaibing/arp-do-neigh-confirm-based-on-sk-arg/20161214-191755
config: openrisc-or1ksim_defconfig (attached as .config)
compiler: or32-linux-gcc (GCC) 4.5.1-or32-1.0rc1
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=openrisc 

All warnings (new ones prefixed by >>):

   net/ipv4/tcp_input.c: In function 'tcp_rcv_state_process':
>> net/ipv4/tcp_input.c:6003:21: warning: unused variable 'dst'

vim +/dst +6003 net/ipv4/tcp_input.c

^1da177e4 Linus Torvalds 2005-04-16  5987  			 */
168a8f580 Jerry Chu      2012-08-31  5988  			tcp_rearm_rto(sk);
168a8f580 Jerry Chu      2012-08-31  5989  		} else
^1da177e4 Linus Torvalds 2005-04-16  5990  			tcp_init_metrics(sk);
^1da177e4 Linus Torvalds 2005-04-16  5991  
c0402760f Yuchung Cheng  2016-09-19  5992  		if (!inet_csk(sk)->icsk_ca_ops->cong_control)
02cf4ebd8 Neal Cardwell  2013-10-21  5993  			tcp_update_pacing_rate(sk);
02cf4ebd8 Neal Cardwell  2013-10-21  5994  
61eb90035 Joe Perches    2013-05-24  5995  		/* Prevent spurious tcp_cwnd_restart() on first data packet */
^1da177e4 Linus Torvalds 2005-04-16  5996  		tp->lsndtime = tcp_time_stamp;
^1da177e4 Linus Torvalds 2005-04-16  5997  
^1da177e4 Linus Torvalds 2005-04-16  5998  		tcp_initialize_rcv_mss(sk);
^1da177e4 Linus Torvalds 2005-04-16  5999  		tcp_fast_path_on(tp);
^1da177e4 Linus Torvalds 2005-04-16  6000  		break;
^1da177e4 Linus Torvalds 2005-04-16  6001  
c48b22daa Joe Perches    2013-05-24  6002  	case TCP_FIN_WAIT1: {
c48b22daa Joe Perches    2013-05-24 @6003  		struct dst_entry *dst;
c48b22daa Joe Perches    2013-05-24  6004  		int tmo;
c48b22daa Joe Perches    2013-05-24  6005  
168a8f580 Jerry Chu      2012-08-31  6006  		/* If we enter the TCP_FIN_WAIT1 state and we are a
168a8f580 Jerry Chu      2012-08-31  6007  		 * Fast Open socket and this is the first acceptable
168a8f580 Jerry Chu      2012-08-31  6008  		 * ACK we have received, this would have acknowledged
168a8f580 Jerry Chu      2012-08-31  6009  		 * our SYNACK so stop the SYNACK timer.
168a8f580 Jerry Chu      2012-08-31  6010  		 */
00db41243 Ian Morris     2015-04-03  6011  		if (req) {

:::::: The code at line 6003 was first introduced by commit
:::::: c48b22daa6062fff9eded311b4d6974c29b40487 tcp: Remove 2 indentation levels in tcp_rcv_state_process

:::::: TO: Joe Perches <joe@...ches.com>
:::::: CC: David S. Miller <davem@...emloft.net>

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