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Message-ID: <DUB108-W45246BF22ED8BAB93B78C8B2220@phx.gbl> Date: Fri, 20 Apr 2012 10:34:53 +0200 From: Marco Berizzi <pupilla@...mail.com> To: <tushar.n.dave@...el.com> CC: <netdev@...r.kernel.org>, <eric.dumazet@...il.com> Subject: RE: rx_dropped packets stop with tcpdump running tushar.n.dave@...el.com wrote: > Marco, Hi Dave, as pointed by Eric, the counter is increasing because a windows box is sending out packets with ethertype 0x886d > Do you see any packet drop at HW level? no, at hw level (ethtool -S eth2) all is in good shape > How are you measuring drop packet? cat /sys/class/net/eth2/statistics/rx_dropped > ethtool -S ethx shows you any packet drop? no, all fine: root@...i:~# ethtool -S eth2 NIC statistics: rx_packets: 5939685 tx_packets: 6108953 rx_bytes: 1416989994 tx_bytes: 5089228182 rx_broadcast: 470407 tx_broadcast: 56489 rx_multicast: 135 tx_multicast: 0 rx_errors: 4 tx_errors: 0 tx_dropped: 0 multicast: 135 collisions: 0 rx_length_errors: 4 rx_over_errors: 0 rx_crc_errors: 0 rx_frame_errors: 0 rx_no_buffer_count: 0 rx_missed_errors: 0 tx_aborted_errors: 0 tx_carrier_errors: 0 tx_fifo_errors: 0 tx_heartbeat_errors: 0 tx_window_errors: 0 tx_abort_late_coll: 0 tx_deferred_ok: 0 tx_single_coll_ok: 0 tx_multi_coll_ok: 0 tx_timeout_count: 0 tx_restart_queue: 0 rx_long_length_errors: 0 rx_short_length_errors: 4 rx_align_errors: 0 tx_tcp_seg_good: 0 tx_tcp_seg_failed: 0 rx_flow_control_xon: 0 rx_flow_control_xoff: 0 tx_flow_control_xon: 0 tx_flow_control_xoff: 0 rx_long_byte_count: 1416989994 rx_csum_offload_good: 5252692 rx_csum_offload_errors: 3 rx_header_split: 0 alloc_rx_buff_failed: 0 tx_smbus: 0 rx_smbus: 0 dropped_smbus: 0 rx_dma_failed: 0 tx_dma_failed: 0 > Also can you please send me the eeprom dump > of you card/LOM. ethtool -e ethx here is the eeprom dump: root@...i:~# ethtool -e eth2 Offset Values ------ ------ 0x0000 00 19 99 ab 2e f6 20 0c 46 f7 01 10 ff ff ff ff 0x0010 31 31 30 32 6b 02 92 11 34 17 d3 10 ff ff 58 a8 0x0020 00 00 01 20 74 7e ff ff 00 10 c8 00 00 00 04 27 0x0030 c9 6c 50 31 3e 07 0b 46 84 21 40 01 00 f0 06 07 0x0040 00 60 80 00 04 0f ff 7f 01 4d 00 c6 00 00 ff 20 0x0050 28 00 93 00 50 00 01 01 01 00 b3 05 68 00 ff ff 0x0060 00 01 00 40 28 13 13 40 ff ff ff ff ff ff ff ff 0x0070 ff ff ff ff ff ff ff ff ff ff 20 01 ff ff 6b 08 0x0080 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 0x0090 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 0x00a0 00 00 1f 38 0a 00 04 00 00 00 1f 38 07 00 04 00 0x00b0 00 00 1f 38 08 00 04 00 00 00 1f 38 09 00 04 00 0x00c0 02 01 01 00 ff ff ff ff ff ff ff ff ff ff ff ff 0x00d0 00 00 1f 38 0a 00 04 00 80 0a 00 20 ef ef ef ef 0x00e0 00 00 1f 38 0b 00 04 00 00 00 1f 38 03 00 04 00 0x00f0 00 00 1f 38 05 00 04 00 00 00 1f 38 02 00 04 00 0x0100 80 07 00 20 ef ef ef ef 00 04 00 00 04 04 00 00 0x0110 08 08 00 08 04 00 08 00 04 00 04 00 ff 00 00 00 0x0120 ff 00 00 04 00 00 00 00 00 00 00 00 01 01 01 00 0x0130 00 00 df 09 98 11 00 00 00 00 1f 38 01 00 04 00 0x0140 00 fd e4 67 00 01 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