Hi Jason, I love your patch! Perhaps something to improve:
[auto build test WARNING on net-next/master] url: https://github.com/0day-ci/linux/commits/Jason-Wang/XDP-transmission-for-tuntap/20180101-105946 config: i386-randconfig-x072-201800 (attached as .config) compiler: gcc-7 (Debian 7.2.0-12) 7.2.1 20171025 reproduce: # save the attached .config to linux build tree make ARCH=i386 All warnings (new ones prefixed by >>): drivers//net/tun.c: In function 'tun_xdp_to_ptr': >> drivers//net/tun.c:251:9: warning: cast to pointer from integer of different >> size [-Wint-to-pointer-cast] return (void *)((unsigned long)ptr | TUN_XDP_FLAG); ^ drivers//net/tun.c: In function 'tun_ptr_to_xdp': drivers//net/tun.c:257:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] return (void *)((unsigned long)ptr & ~TUN_XDP_FLAG); ^ vim +251 drivers//net/tun.c 248 249 void *tun_xdp_to_ptr(void *ptr) 250 { > 251 return (void *)((unsigned long)ptr | TUN_XDP_FLAG); 252 } 253 EXPORT_SYMBOL(tun_xdp_to_ptr); 254 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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