netdev - Re: [PATCH cumulus-4.1.y 1/5] vxlan: flush fdb entries on oper down

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Message-ID: <201701211605.UhNdPVix%fengguang.wu@intel.com>
Date:   Sat, 21 Jan 2017 16:58:37 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Roopa Prabhu <roopa@...ulusnetworks.com>
Cc:     kbuild-all@...org, davem@...emloft.net, netdev@...r.kernel.org,
        ramanb@...ulusnetworks.com, stephen@...workplumber.org,
        jbenc@...hat.com, pshelar@....org
Subject: Re: [PATCH cumulus-4.1.y 1/5] vxlan: flush fdb entries on oper down

Hi Balakrishnan,

[auto build test WARNING on net-next/master]
[also build test WARNING on v4.10-rc4 next-20170120]
[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/Roopa-Prabhu/vxlan-flush-fdb-entries-on-oper-down/20170121-163042
config: i386-randconfig-x005-201703 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

   In file included from include/linux/linkage.h:4:0,
                    from include/linux/kernel.h:6,
                    from drivers/net/vxlan.c:13:
   drivers/net/vxlan.c: In function 'vxlan_netdevice_event':
   drivers/net/vxlan.c:3280:27: error: 'vxlan_netdev_ops' undeclared (first use in this function)
      if (dev->netdev_ops == &vxlan_netdev_ops) {
                              ^
   include/linux/compiler.h:149:30: note: in definition of macro '__trace_if'
     if (__builtin_constant_p(!!(cond)) ? !!(cond) :   \
                                 ^~~~
>> drivers/net/vxlan.c:3280:3: note: in expansion of macro 'if'
      if (dev->netdev_ops == &vxlan_netdev_ops) {
      ^~
   drivers/net/vxlan.c:3280:27: note: each undeclared identifier is reported only once for each function it appears in
      if (dev->netdev_ops == &vxlan_netdev_ops) {
                              ^
   include/linux/compiler.h:149:30: note: in definition of macro '__trace_if'
     if (__builtin_constant_p(!!(cond)) ? !!(cond) :   \
                                 ^~~~
>> drivers/net/vxlan.c:3280:3: note: in expansion of macro 'if'
      if (dev->netdev_ops == &vxlan_netdev_ops) {
      ^~

vim +/if +3280 drivers/net/vxlan.c

  3264		}
  3265	
  3266		unregister_netdevice_many(&list_kill);
  3267	}
  3268	
  3269	static int vxlan_netdevice_event(struct notifier_block *unused,
  3270					 unsigned long event, void *ptr)
  3271	{
  3272		struct net_device *dev = netdev_notifier_info_to_dev(ptr);
  3273		struct vxlan_net *vn = net_generic(dev_net(dev), vxlan_net_id);
  3274	
  3275		if (event == NETDEV_UNREGISTER)
  3276			vxlan_handle_lowerdev_unregister(vn, dev);
  3277		else if (event == NETDEV_UDP_TUNNEL_PUSH_INFO)
  3278			vxlan_push_rx_ports(dev);
  3279		else if (event == NETDEV_CHANGE) {
> 3280			if (dev->netdev_ops == &vxlan_netdev_ops) {
  3281				if (netif_running(dev) && !netif_oper_up(dev))
  3282					vxlan_flush(netdev_priv(dev));
  3283			}
  3284		}
  3285	
  3286		return NOTIFY_DONE;
  3287	}
  3288	

---
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