Hi Andrew, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on vhost/linux-next] [also build test WARNING on net-next/master net/master linus/master v5.14-rc6 next-20210818] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Andrew-Melnychenko/drivers-net-v... base: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next config: i386-randconfig-a015-20210818 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project d2b574a4dea5b718e4386bf2e26af0126e5978ce) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/e731fc592ef2151e3a1fe044fa182517a... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Andrew-Melnychenko/drivers-net-virtio_net-Added-RSS-support/20210819-015744 git checkout e731fc592ef2151e3a1fe044fa182517adb1e47e # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): u32 virtnet_get_rxfh_key_size(struct net_device *dev) ^ drivers/net/virtio_net.c:2476:1: note: declare 'static' if the function is not intended to be used outside of this translation unit u32 virtnet_get_rxfh_key_size(struct net_device *dev) ^ static u32 virtnet_get_rxfh_indir_size(struct net_device *dev) ^ drivers/net/virtio_net.c:2481:1: note: declare 'static' if the function is not intended to be used outside of this translation unit u32 virtnet_get_rxfh_indir_size(struct net_device *dev) ^ static int virtnet_get_rxfh(struct net_device *dev, u32 *indir, u8 *key, u8 *hfunc) ^ drivers/net/virtio_net.c:2486:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int virtnet_get_rxfh(struct net_device *dev, u32 *indir, u8 *key, u8 *hfunc) ^ static int virtnet_set_rxfh(struct net_device *dev, const u32 *indir, const u8 *key, const u8 hfunc) ^ drivers/net/virtio_net.c:2505:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int virtnet_set_rxfh(struct net_device *dev, const u32 *indir, const u8 *key, const u8 hfunc) ^ static drivers/net/virtio_net.c:2535:2: error: 'default' statement not in switch statement default: ^ int virtnet_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info, u32 *rule_locs) ^ drivers/net/virtio_net.c:2525:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int virtnet_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info, u32 *rule_locs) ^ static drivers/net/virtio_net.c:2539:2: error: expected identifier or '(' return rc; ^ drivers/net/virtio_net.c:2540:1: error: extraneous closing brace ('}') } ^ 5 warnings and 3 errors generated. vim +/virtnet_get_rxfh_key_size +2476 drivers/net/virtio_net.c 2475 2477 { 2478 return ((struct virtnet_info *)netdev_priv(dev))->rss_key_size; 2479 } 2480 2482 { 2483 return ((struct virtnet_info *)netdev_priv(dev))->rss_indir_table_size; 2484 } 2485 2487 { 2488 struct virtnet_info *vi = netdev_priv(dev); 2489 int i; 2490 2491 if (indir) { 2492 for (i = 0; i < vi->rss_indir_table_size; ++i) 2493 indir[i] = vi->ctrl->rss.indirection_table[i]; 2494 } 2495 2496 if (key) 2497 memcpy(key, vi->ctrl->rss.key, vi->rss_key_size); 2498 2499 if (hfunc) 2500 *hfunc = ETH_RSS_HASH_TOP; 2501 2502 return 0; 2503 } 2504 2506 { 2507 struct virtnet_info *vi = netdev_priv(dev); 2508 int i; 2509 2510 if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP) 2511 return -EOPNOTSUPP; 2512 2513 if (indir) { 2514 for (i = 0; i < vi->rss_indir_table_size; ++i) 2515 vi->ctrl->rss.indirection_table[i] = indir[i]; 2516 } 2517 if (key) 2518 memcpy(vi->ctrl->rss.key, key, vi->rss_key_size); 2519 2520 virtnet_commit_rss_command(vi); 2521 2522 return 0; 2523 } 2524 2526 { 2527 struct virtnet_info *vi = netdev_priv(dev); 2528 int rc = 0; 2529 2530 switch (info->cmd) { 2531 case ETHTOOL_GRXRINGS: 2532 info->data = vi->curr_queue_pairs; 2533 rc = -EOPNOTSUPP; 2534 } 2535 default: 2536 rc = -EOPNOTSUPP; 2537 } 2538 2539 return rc; 2540 } 2541 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org