The rx function used was ixgbe_recv_pkts_bulk_alloc. the problem seems that the rx desc ring not full, but nic don't write data to ring and inc the missed error counter.
2016-09-01 21:48 GMT+08:00 wei wang <lnykww at gmail.com>: > my enviroment: > NIC:X540 > DPDK version:2.2.0 > > problems: > start dpdk app with traffic not stopped?app can't receive any packet > from dpdk ixgbe driver (1.2w pps udp packet). > test five times would happens 1 ~ 2 times. > > The stats of the nic (ipackets==3230 and imissed == ierrors): > ipackets 3230 imissed 9780225 ierrors 9780225 > ipackets 3230 imissed 9792154 ierrors 9792154 > ipackets 3230 imissed 9804310 ierrors 9804310 > ipackets 3230 imissed 9816177 ierrors 9816177 > ipackets 3230 imissed 9828042 ierrors 9828042 > ipackets 3230 imissed 9839694 ierrors 9839694 > ipackets 3230 imissed 9851412 ierrors 9851412 > ipackets 3230 imissed 9863134 ierrors 9863134 > ipackets 3230 imissed 9874722 ierrors 9874722 > ipackets 3230 imissed 9886776 ierrors 9886776 > ipackets 3230 imissed 9898616 ierrors 9898616 > ipackets 3230 imissed 9910648 ierrors 9910648 > ipackets 3230 imissed 9922513 ierrors 9922513 > > The value of register RDH:1023 > The value of register RDT:959 > > there are some desc value log for one queue, the format of the log is > [desc_idx](DD value, vlan, length, status_error) : > [959]:(0,0, 0, 0) [960]:(1,0, 2048, 1342308425) [961]:(1,0, 2048, > 1342308425) [962]:(1,0, 1031, 1342308427) > [963]:(1,0, 0, 3) [964]:(1,0, 0, 3) > [965]:(1,0, 2048, 1342308425) [966]:(1,0, 2048, 1342308425) > [967]:(1,0, 1031, 1342308427) [968]:(1,0, 0, 3) [969]:(1,0, 0, 3) > [970]:(1,0, 2048, 1342308425) > [971]:(1,0, 2048, 1342308425) [972]:(1,0, 1031, 1342308427) > [973]:(1,0, 0, 3) [974]:(1,0, 0, 3) > [975]:(1,0, 2048, 1342308425) [976]:(1,0, 2048, 1342308425) > [977]:(1,0, 1031, 1342308427) [978]:(1,0, 0, 3) > [979]:(1,0, 0, 3) [980]:(1,0, 2048, 1342308425) [981]:(1,0, 2048, > 1342308425) [982]:(1,0, 1031, 1342308427) > [983]:(1,0, 0, 3) [984]:(1,0, 0, 3) [985]:(1,0, 2048, 1342308425) > [986]:(1,0, 2048, 1342308425) > [987]:(1,0, 1031, 1342308427) [988]:(1,0, 0, 3) [989]:(1,0, 0, 3) > [990]:(1,0, 2048, 1342308425) > [991]:(1,0, 2048, 1342308425) [992]:(1,0, 1031, 1342308427) > [993]:(1,0, 0, 3) [994]:(1,0, 0, 3) > [995]:(1,0, 2048, 1342308425) [996]:(1,0, 2048, 1342308425) > [997]:(1,0, 1031, 1342308427) [998]:(1,0, 0, 3) > [999]:(1,0, 0, 3) [1000]:(1,0, 2048, 1342308425) [1001]:(1,0, 2048, > 1342308425) [1002]:(1,0, 1031, 1342308427) > [1003]:(1,0, 0, 3) [1004]:(1,0, 0, 3) [1005]:(1,0, 2048, 1342308425) > [1006]:(1,0, 2048, 1342308425) > [1007]:(1,0, 1031, 1342308427) [1008]:(1,0, 0, 3) [1009]:(1,0, 0, 3) > [1010]:(1,0, 2048, 1342308425) > [1011]:(1,0, 2048, 1342308425) [1012]:(1,0, 1031, 1342308427) > [1013]:(1,0, 0, 3)[1014]:(1,0, 0, 3) > [1015]:(1,0, 2048, 1342308425) [1016]:(1,0, 2048, 1342308425) > [1017]:(1,0, 1031, 1342308427) [1018]:(1,0, 0, 3) > [1019]:(1,0, 0, 3) [1020]:(1,0, 2048, 1342308425) [1021]:(1,0, 2048, > 1342308425) [1022]:(1,0, 1031, 1342308427) [1023]:(0,0, 0, 0) > > other desc in the ring is all zero? > > is there a bug? > > PS: it was normal with linux ixgbe driver?
