Re: [PATCH net-next 2/3] ioam6: multicast event

[kernel test robot]

Hi Justin,

kernel test robot noticed the following build warnings:

[auto build test WARNING on a6e0cb150c514efba4aaba4069927de43d80bb59]

url:    https://github.com/intel-lab-lkp/linux/commits/Justin-Iurman/uapi-ioam6-API-for-netlink-multicast-events/20240221-034623
base:   a6e0cb150c514efba4aaba4069927de43d80bb59
patch link:    https://lore.kernel.org/r/20240220194444.36127-3-justin.iurman%40uliege.be
patch subject: [PATCH net-next 2/3] ioam6: multicast event
config: parisc-defconfig (https://download.01.org/0day-ci/archive/20240221/202402212253.mfysd5E1-lkp@xxxxxxxxx/config)
compiler: hppa-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240221/202402212253.mfysd5E1-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202402212253.mfysd5E1-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

   net/ipv6/ioam6.c: In function 'ioam6_event':
>> net/ipv6/ioam6.c:657:9: warning: enumeration value 'IOAM6_EVENT_UNSPEC' not handled in switch [-Wswitch]
     657 |         switch (type) {
         |         ^~~~~~


vim +/IOAM6_EVENT_UNSPEC +657 net/ipv6/ioam6.c

   638	
   639	void ioam6_event(enum ioam6_event_type type, struct net *net, gfp_t gfp,
   640			 void *opt, unsigned int opt_len)
   641	{
   642		struct nlmsghdr *nlh;
   643		struct sk_buff *skb;
   644	
   645		if (!genl_has_listeners(&ioam6_genl_family, net,
   646					IOAM6_GENL_EV_GRP_OFFSET))
   647			return;
   648	
   649		skb = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
   650		if (!skb)
   651			return;
   652	
   653		nlh = genlmsg_put(skb, 0, 0, &ioam6_genl_family, 0, type);
   654		if (!nlh)
   655			goto nla_put_failure;
   656	
 > 657		switch (type) {
   658		case IOAM6_EVENT_TRACE:
   659			if (ioam6_event_put_trace(skb, (struct ioam6_trace_hdr *)opt,
   660						  opt_len))
   661				goto nla_put_failure;
   662			break;
   663		}
   664	
   665		genlmsg_end(skb, nlh);
   666		genlmsg_multicast_netns(&ioam6_genl_family, net, skb, 0,
   667					IOAM6_GENL_EV_GRP_OFFSET, gfp);
   668		return;
   669	
   670	nla_put_failure:
   671		nlmsg_free(skb);
   672	}
   673	

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