Hi Kommula, kernel test robot noticed the following build warnings:
[auto build test WARNING on net-next/main] url: https://github.com/intel-lab-lkp/linux/commits/Kommula-Shiva-Shankar/net-implement-virtio-helper-to-handle-outer-nw-offset/20250924-042602 base: net-next/main patch link: https://lore.kernel.org/r/20250923202258.2738717-3-kshankar%40marvell.com patch subject: [PATCH v1 net-next 2/3] virtio_net: enable outer nw header offset support. config: x86_64-randconfig-122-20250924 (https://download.01.org/0day-ci/archive/20250925/202509250856.hovmjfzw-...@intel.com/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250925/202509250856.hovmjfzw-...@intel.com/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 <l...@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202509250856.hovmjfzw-...@intel.com/ sparse warnings: (new ones prefixed by >>) drivers/net/virtio_net.c: note: in included file: >> include/linux/virtio_net.h:389:72: sparse: sparse: incorrect type in >> argument 2 (different base types) @@ expected restricted __virtio16 >> [usertype] val @@ got restricted __le16 [usertype] outer_nh_offset @@ include/linux/virtio_net.h:389:72: sparse: expected restricted __virtio16 [usertype] val include/linux/virtio_net.h:389:72: sparse: got restricted __le16 [usertype] outer_nh_offset >> include/linux/virtio_net.h:411:39: sparse: sparse: incorrect type in >> assignment (different base types) @@ expected restricted __le16 >> [usertype] outer_nh_offset @@ got restricted __virtio16 @@ include/linux/virtio_net.h:411:39: sparse: expected restricted __le16 [usertype] outer_nh_offset include/linux/virtio_net.h:411:39: sparse: got restricted __virtio16 vim +389 include/linux/virtio_net.h a2fb4bc4e2a6a0 Paolo Abeni 2025-07-08 376 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 377 static inline int 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 378 virtio_net_out_net_header_to_skb(struct sk_buff *skb, 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 379 struct virtio_net_hdr_v1_hash_tunnel_out_net_hdr *vhdr, 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 380 bool out_net_hdr_negotiated, 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 381 bool little_endian) 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 382 { 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 383 unsigned int out_net_hdr_off; 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 384 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 385 if (!out_net_hdr_negotiated) 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 386 return 0; 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 387 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 388 if (vhdr->outer_nh_offset) { 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 @389 out_net_hdr_off = __virtio16_to_cpu(little_endian, vhdr->outer_nh_offset); 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 390 skb_set_network_header(skb, out_net_hdr_off); 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 391 } 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 392 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 393 return 0; 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 394 } 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 395 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 396 static inline int 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 397 virtio_net_out_net_header_from_skb(const struct sk_buff *skb, 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 398 struct virtio_net_hdr_v1_hash_tunnel_out_net_hdr *vhdr, 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 399 bool out_net_hdr_negotiated, 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 400 bool little_endian) 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 401 { 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 402 unsigned int out_net_hdr_off; 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 403 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 404 if (!out_net_hdr_negotiated) { 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 405 vhdr->outer_nh_offset = 0; 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 406 return 0; 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 407 } 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 408 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 409 out_net_hdr_off = skb_network_offset(skb); 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 410 if (out_net_hdr_off && skb->protocol == htons(ETH_P_IP)) 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 @411 vhdr->outer_nh_offset = __cpu_to_virtio16(little_endian, 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 412 out_net_hdr_off); 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 413 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 414 return 0; 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 415 } 1dc49efaeaa4c1 Kommula Shiva Shankar 2025-09-24 416 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
