Hi Yuchung, [auto build test WARNING on net-next/master]
url: https://github.com/0day-ci/linux/commits/Neal-Cardwell/tcp-BBR-congestion-control-algorithm/20160917-025323 config: cris-etrax-100lx_v2_defconfig (attached as .config) compiler: cris-linux-gcc (GCC) 6.2.0 reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=cris All warnings (new ones prefixed by >>): In file included from net/ipv4/route.c:103:0: >> include/net/tcp.h:769:11: warning: 'packed' attribute ignored for field of >> type 'struct skb_mstamp' [-Wattributes] struct skb_mstamp first_tx_mstamp __packed; ^~~~~~~~~~ include/net/tcp.h:771:11: warning: 'packed' attribute ignored for field of type 'struct skb_mstamp' [-Wattributes] struct skb_mstamp delivered_mstamp __packed; ^~~~~~~~~~ vim +769 include/net/tcp.h 753 #define TCPCB_TAGBITS 0x07 /* All tag bits */ 754 #define TCPCB_REPAIRED 0x10 /* SKB repaired (no skb_mstamp) */ 755 #define TCPCB_EVER_RETRANS 0x80 /* Ever retransmitted frame */ 756 #define TCPCB_RETRANS (TCPCB_SACKED_RETRANS|TCPCB_EVER_RETRANS| \ 757 TCPCB_REPAIRED) 758 759 __u8 ip_dsfield; /* IPv4 tos or IPv6 dsfield */ 760 __u8 txstamp_ack:1, /* Record TX timestamp for ack? */ 761 eor:1, /* Is skb MSG_EOR marked? */ 762 unused:6; 763 __u32 ack_seq; /* Sequence number ACK'd */ 764 union { 765 struct { 766 /* There is space for up to 24 bytes */ 767 __u32 in_flight;/* Bytes in flight when packet sent */ 768 /* start of send pipeline phase */ > 769 struct skb_mstamp first_tx_mstamp __packed; 770 /* when we reached the "delivered" count */ 771 struct skb_mstamp delivered_mstamp __packed; 772 /* pkts S/ACKed so far upon tx of skb, incl retrans: */ 773 __u32 delivered; 774 } tx; /* only used for outgoing skbs */ 775 union { 776 struct inet_skb_parm h4; 777 #if IS_ENABLED(CONFIG_IPV6) --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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