Hi, I love your patch! Perhaps something to improve: [auto build test WARNING on vhost/linux-next] [also build test WARNING on linus/master ipvs/master v5.6-rc3 next-20200224] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/anton-ivanov-cambridgegreys-com/virtio-Work-around-frames-incorrectly-marked-as-gso/20200224-190342 base: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next config: nds32-defconfig (attached as .config) compiler: nds32le-linux-gcc (GCC) 9.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=9.2.0 make.cross ARCH=nds32 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from net/packet/af_packet.c:82: include/linux/virtio_net.h: In function 'virtio_net_hdr_from_skb': >> include/linux/virtio_net.h:103:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] 103 | struct skb_shared_info *sinfo = skb_shinfo(skb); | ^~~~~~ vim +103 include/linux/virtio_net.h fd2a0437dc33b6 Mike Rapoport 2016-06-08 94 fd2a0437dc33b6 Mike Rapoport 2016-06-08 95 static inline int virtio_net_hdr_from_skb(const struct sk_buff *skb, fd2a0437dc33b6 Mike Rapoport 2016-06-08 96 struct virtio_net_hdr *hdr, 6391a4481ba079 Jason Wang 2017-01-20 97 bool little_endian, fd3a8862584490 Willem de Bruijn 2018-06-06 98 bool has_data_valid, fd3a8862584490 Willem de Bruijn 2018-06-06 99 int vlan_hlen) fd2a0437dc33b6 Mike Rapoport 2016-06-08 100 { 9403cd7cbb08aa Jarno Rajahalme 2016-11-18 101 memset(hdr, 0, sizeof(*hdr)); /* no info leak */ fd2a0437dc33b6 Mike Rapoport 2016-06-08 102 fd2a0437dc33b6 Mike Rapoport 2016-06-08 @103 struct skb_shared_info *sinfo = skb_shinfo(skb); 3d2c1fd2739938 Anton Ivanov 2020-02-24 104 if (skb_is_gso(skb) && sinfo->gso_type) { fd2a0437dc33b6 Mike Rapoport 2016-06-08 105 fd2a0437dc33b6 Mike Rapoport 2016-06-08 106 /* This is a hint as to how much should be linear. */ fd2a0437dc33b6 Mike Rapoport 2016-06-08 107 hdr->hdr_len = __cpu_to_virtio16(little_endian, fd2a0437dc33b6 Mike Rapoport 2016-06-08 108 skb_headlen(skb)); fd2a0437dc33b6 Mike Rapoport 2016-06-08 109 hdr->gso_size = __cpu_to_virtio16(little_endian, fd2a0437dc33b6 Mike Rapoport 2016-06-08 110 sinfo->gso_size); fd2a0437dc33b6 Mike Rapoport 2016-06-08 111 if (sinfo->gso_type & SKB_GSO_TCPV4) fd2a0437dc33b6 Mike Rapoport 2016-06-08 112 hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV4; fd2a0437dc33b6 Mike Rapoport 2016-06-08 113 else if (sinfo->gso_type & SKB_GSO_TCPV6) fd2a0437dc33b6 Mike Rapoport 2016-06-08 114 hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV6; fd2a0437dc33b6 Mike Rapoport 2016-06-08 115 else fd2a0437dc33b6 Mike Rapoport 2016-06-08 116 return -EINVAL; fd2a0437dc33b6 Mike Rapoport 2016-06-08 117 if (sinfo->gso_type & SKB_GSO_TCP_ECN) fd2a0437dc33b6 Mike Rapoport 2016-06-08 118 hdr->gso_type |= VIRTIO_NET_HDR_GSO_ECN; fd2a0437dc33b6 Mike Rapoport 2016-06-08 119 } else fd2a0437dc33b6 Mike Rapoport 2016-06-08 120 hdr->gso_type = VIRTIO_NET_HDR_GSO_NONE; fd2a0437dc33b6 Mike Rapoport 2016-06-08 121 fd2a0437dc33b6 Mike Rapoport 2016-06-08 122 if (skb->ip_summed == CHECKSUM_PARTIAL) { fd2a0437dc33b6 Mike Rapoport 2016-06-08 123 hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; fd2a0437dc33b6 Mike Rapoport 2016-06-08 124 hdr->csum_start = __cpu_to_virtio16(little_endian, fd3a8862584490 Willem de Bruijn 2018-06-06 125 skb_checksum_start_offset(skb) + vlan_hlen); fd2a0437dc33b6 Mike Rapoport 2016-06-08 126 hdr->csum_offset = __cpu_to_virtio16(little_endian, fd2a0437dc33b6 Mike Rapoport 2016-06-08 127 skb->csum_offset); 6391a4481ba079 Jason Wang 2017-01-20 128 } else if (has_data_valid && 6391a4481ba079 Jason Wang 2017-01-20 129 skb->ip_summed == CHECKSUM_UNNECESSARY) { 6391a4481ba079 Jason Wang 2017-01-20 130 hdr->flags = VIRTIO_NET_HDR_F_DATA_VALID; fd2a0437dc33b6 Mike Rapoport 2016-06-08 131 } /* else everything is zero */ fd2a0437dc33b6 Mike Rapoport 2016-06-08 132 fd2a0437dc33b6 Mike Rapoport 2016-06-08 133 return 0; fd2a0437dc33b6 Mike Rapoport 2016-06-08 134 } fd2a0437dc33b6 Mike Rapoport 2016-06-08 135 :::::: The code at line 103 was first introduced by commit :::::: fd2a0437dc33b6425cabf74cc7fc7fdba6d5903b virtio_net: introduce virtio_net_hdr_{from,to}_skb :::::: TO: Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx> :::::: CC: David S. Miller <davem@xxxxxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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