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Message-ID: <72e03ae4befab34f3f5f6aa1e2a6743af6ad667c.camel@baylibre.com>
Date: Thu, 30 Aug 2018 11:21:27 +0200
From: Jerome Brunet <jbrunet@...libre.com>
To: Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
Jose.Abreu@...opsys.com
Cc: peppe.cavallaro@...com, alexandre.torgue@...com,
netdev@...r.kernel.org, linux-amlogic@...ts.infradead.org,
Joao.Pinto@...opsys.com, clabbe@...libre.com,
linux-kernel@...r.kernel.org, Vitor.Soares@...opsys.com
Subject: Re: [PATCH] Revert "net: stmmac: Do not keep rearming the coalesce
timer in stmmac_xmit"
On Wed, 2018-08-29 at 20:03 +0200, Martin Blumenstingl wrote:
> Hi Jose,
>
> On Tue, Aug 28, 2018 at 10:12 AM Jose Abreu <Jose.Abreu@...opsys.com> wrote:
> >
> > Hi Jerome,
> >
> > On 24-08-2018 10:04, Jerome Brunet wrote:
> > > This reverts commit 4ae0169fd1b3c792b66be58995b7e6b629919ecf.
> > >
> > > This change in the handling of the coalesce timer is causing regression on
> > > (at least) amlogic platforms.
> > >
> > > Network will break down very quickly (a few seconds) after starting
> > > a download. This can easily be reproduced using iperf3 for example.
> > >
> > > The problem has been reported on the S805, S905, S912 and A113 SoCs
> > > (Realtek and Micrel PHYs) and it is likely impacting all Amlogics
> > > platforms using Gbit ethernet
> > >
> > > No problem was seen with the platform using 10/100 only PHYs (GXL internal)
> > >
> > > Reverting change brings things back to normal and allows to use network
> > > again until we better understand the problem with the coalesce timer.
> > >
> > >
> >
> > Apologies for the delayed answer but I was in FTO.
>
> I hope you were able to enjoy your time off
>
> > I'm not sure what can be causing this but I have some questions
> > for you:
> > - What do you mean by "network will break down"? Do you see
> > queue timeout?
>
> in case of iperf3 traffic just stops
>
> > - What do you see in ethtool/ifconfig stats? Can you send me
> > the stats before and after network break?
>
> see below for my exact steps. let me know if you need more information
> (but be prepared for some delay until I respond)
>
> > - Is your setup multi-queue/channel?
>
> we don't specify anything in the .dtsi files of our platform, so the
> "default" is being used
>
> > - Can you point me to the DT bindings of your setup?
>
> in this specific case I used
> arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts which inherits
> the platform settings from arch/arm64/boot/dts/amlogic/meson-gx.dtsi
problem is also confirmed of the following devices:
* arch/arm64/boot/dts/amlogic/meson-axg-s400.dts
* arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
* arch/arm64/boot/dts/amlogic/meson-gxbb-p200.dts
* arch/arm/boot/dts/meson8b-odroidc1.dts
But AFAIK, all amlogic platforms with GBe PHY are impacted
> ("ethmac" node)
>
> so here's my exact steps to reproduce:
> - boot the board
> - IP address is auto-assigned via DHCP
> - iperf3 -c 192.168.1.100
> - wait until network breaks, CTRL+C
> - ifconfig eth0 down
> - ifconfig eth0 up
> - (now Ethernet is working again)
>
> from that point on:
> # dmesg | tail -n 4
> [ 47.782778] RTL8211F Gigabit Ethernet 0.2009087f:00: attached PHY
> driver [RTL8211F Gigabit Ethernet] (mii_bus:phy_addr=0.2009087f:00,
> irq=30)
> [ 47.803540] meson8b-dwmac c9410000.ethernet eth0: No Safety
> Features support found
> [ 47.805505] meson8b-dwmac c9410000.ethernet eth0: PTP not supported by HW
> [ 50.311975] meson8b-dwmac c9410000.ethernet eth0: Link is Up -
> 1Gbps/Full - flow control rx/tx
>
> # ethtool -S eth0
> NIC statistics:
> mmc_tx_octetcount_gb: 0
> mmc_tx_framecount_gb: 0
> mmc_tx_broadcastframe_g: 0
> mmc_tx_multicastframe_g: 0
> mmc_tx_64_octets_gb: 0
> mmc_tx_65_to_127_octets_gb: 0
> mmc_tx_128_to_255_octets_gb: 0
> mmc_tx_256_to_511_octets_gb: 0
> mmc_tx_512_to_1023_octets_gb: 0
> mmc_tx_1024_to_max_octets_gb: 0
> mmc_tx_unicast_gb: 0
> mmc_tx_multicast_gb: 0
> mmc_tx_broadcast_gb: 0
> mmc_tx_underflow_error: 0
> mmc_tx_singlecol_g: 0
> mmc_tx_multicol_g: 0
> mmc_tx_deferred: 0
> mmc_tx_latecol: 0
> mmc_tx_exesscol: 0
> mmc_tx_carrier_error: 0
> mmc_tx_octetcount_g: 0
> mmc_tx_framecount_g: 0
> mmc_tx_excessdef: 0
> mmc_tx_pause_frame: 0
> mmc_tx_vlan_frame_g: 0
> mmc_rx_framecount_gb: 43
> mmc_rx_octetcount_gb: 3096
> mmc_rx_octetcount_g: 3096
> mmc_rx_broadcastframe_g: 38
> mmc_rx_multicastframe_g: 0
> mmc_rx_crc_error: 0
> mmc_rx_align_error: 0
> mmc_rx_run_error: 0
> mmc_rx_jabber_error: 0
> mmc_rx_undersize_g: 0
> mmc_rx_oversize_g: 0
> mmc_rx_64_octets_gb: 29
> mmc_rx_65_to_127_octets_gb: 13
> mmc_rx_128_to_255_octets_gb: 0
> mmc_rx_256_to_511_octets_gb: 1
> mmc_rx_512_to_1023_octets_gb: 0
> mmc_rx_1024_to_max_octets_gb: 0
> mmc_rx_unicast_g: 5
> mmc_rx_length_error: 0
> mmc_rx_autofrangetype: 0
> mmc_rx_pause_frames: 0
> mmc_rx_fifo_overflow: 0
> mmc_rx_vlan_frames_gb: 0
> mmc_rx_watchdog_error: 0
> mmc_rx_ipc_intr_mask: 1073692671
> mmc_rx_ipc_intr: 0
> mmc_rx_ipv4_gd: 15
> mmc_rx_ipv4_hderr: 0
> mmc_rx_ipv4_nopay: 0
> mmc_rx_ipv4_frag: 0
> mmc_rx_ipv4_udsbl: 0
> mmc_rx_ipv4_gd_octets: 1028
> mmc_rx_ipv4_hderr_octets: 0
> mmc_rx_ipv4_nopay_octets: 0
> mmc_rx_ipv4_frag_octets: 0
> mmc_rx_ipv4_udsbl_octets: 0
> mmc_rx_ipv6_gd_octets: 0
> mmc_rx_ipv6_hderr_octets: 0
> mmc_rx_ipv6_nopay_octets: 0
> mmc_rx_ipv6_gd: 0
> mmc_rx_ipv6_hderr: 0
> mmc_rx_ipv6_nopay: 0
> mmc_rx_udp_gd: 11
> mmc_rx_udp_err: 0
> mmc_rx_tcp_gd: 4
> mmc_rx_tcp_err: 0
> mmc_rx_icmp_gd: 0
> mmc_rx_icmp_err: 0
> mmc_rx_udp_gd_octets: 592
> mmc_rx_udp_err_octets: 0
> mmc_rx_tcp_gd_octets: 136
> mmc_rx_tcp_err_octets: 0
> mmc_rx_icmp_gd_octets: 0
> mmc_rx_icmp_err_octets: 0
> tx_underflow: 0
> tx_carrier: 0
> tx_losscarrier: 0
> vlan_tag: 0
> tx_deferred: 0
> tx_vlan: 0
> tx_jabber: 0
> tx_frame_flushed: 0
> tx_payload_error: 0
> tx_ip_header_error: 0
> rx_desc: 0
> sa_filter_fail: 0
> overflow_error: 0
> ipc_csum_error: 0
> rx_collision: 0
> rx_crc_errors: 0
> dribbling_bit: 0
> rx_length: 0
> rx_mii: 0
> rx_multicast: 0
> rx_gmac_overflow: 0
> rx_watchdog: 0
> da_rx_filter_fail: 0
> sa_rx_filter_fail: 0
> rx_missed_cntr: 0
> rx_overflow_cntr: 0
> rx_vlan: 0
> tx_undeflow_irq: 0
> tx_process_stopped_irq: 0
> tx_jabber_irq: 0
> rx_overflow_irq: 0
> rx_buf_unav_irq: 0
> rx_process_stopped_irq: 0
> rx_watchdog_irq: 0
> tx_early_irq: 0
> fatal_bus_error_irq: 0
> rx_early_irq: 0
> threshold: 1
> tx_pkt_n: 8
> rx_pkt_n: 43
> normal_irq_n: 38
> rx_normal_irq_n: 34
> napi_poll: 38
> tx_normal_irq_n: 4
> tx_clean: 43
> tx_set_ic_bit: 4
> irq_receive_pmt_irq_n: 0
> mmc_tx_irq_n: 0
> mmc_rx_irq_n: 0
> mmc_rx_csum_offload_irq_n: 0
> irq_tx_path_in_lpi_mode_n: 0
> irq_tx_path_exit_lpi_mode_n: 0
> irq_rx_path_in_lpi_mode_n: 0
> irq_rx_path_exit_lpi_mode_n: 0
> phy_eee_wakeup_error_n: 0
> ip_hdr_err: 0
> ip_payload_err: 0
> ip_csum_bypassed: 0
> ipv4_pkt_rcvd: 0
> ipv6_pkt_rcvd: 0
> no_ptp_rx_msg_type_ext: 0
> ptp_rx_msg_type_sync: 0
> ptp_rx_msg_type_follow_up: 0
> ptp_rx_msg_type_delay_req: 0
> ptp_rx_msg_type_delay_resp: 0
> ptp_rx_msg_type_pdelay_req: 0
> ptp_rx_msg_type_pdelay_resp: 0
> ptp_rx_msg_type_pdelay_follow_up: 0
> ptp_rx_msg_type_announce: 0
> ptp_rx_msg_type_management: 0
> ptp_rx_msg_pkt_reserved_type: 0
> ptp_frame_type: 0
> ptp_ver: 0
> timestamp_dropped: 0
> av_pkt_rcvd: 0
> av_tagged_pkt_rcvd: 0
> vlan_tag_priority_val: 0
> l3_filter_match: 0
> l4_filter_match: 0
> l3_l4_filter_no_match: 0
> irq_pcs_ane_n: 0
> irq_pcs_link_n: 0
> irq_rgmii_n: 0
> mtl_tx_status_fifo_full: 0
> mtl_tx_fifo_not_empty: 0
> mmtl_fifo_ctrl: 0
> mtl_tx_fifo_read_ctrl_write: 0
> mtl_tx_fifo_read_ctrl_wait: 0
> mtl_tx_fifo_read_ctrl_read: 0
> mtl_tx_fifo_read_ctrl_idle: 0
> mac_tx_in_pause: 0
> mac_tx_frame_ctrl_xfer: 0
> mac_tx_frame_ctrl_idle: 0
> mac_tx_frame_ctrl_wait: 0
> mac_tx_frame_ctrl_pause: 0
> mac_gmii_tx_proto_engine: 0
> mtl_rx_fifo_fill_level_full: 0
> mtl_rx_fifo_fill_above_thresh: 0
> mtl_rx_fifo_fill_below_thresh: 0
> mtl_rx_fifo_fill_level_empty: 0
> mtl_rx_fifo_read_ctrl_flush: 0
> mtl_rx_fifo_read_ctrl_read_data: 0
> mtl_rx_fifo_read_ctrl_status: 0
> mtl_rx_fifo_read_ctrl_idle: 0
> mtl_rx_fifo_ctrl_active: 0
> mac_rx_frame_ctrl_fifo: 0
> mac_gmii_rx_proto_engine: 0
> tx_tso_frames: 0
> tx_tso_nfrags: 0
> # ethtool eth0
> Settings for eth0:
> Supported ports: [ TP MII ]
> Supported link modes: 10baseT/Half 10baseT/Full
> 100baseT/Half 100baseT/Full
> 1000baseT/Full
> Supported pause frame use: Symmetric Receive-only
> Supports auto-negotiation: Yes
> Supported FEC modes: Not reported
> Advertised link modes: 10baseT/Half 10baseT/Full
> 100baseT/Half 100baseT/Full
> 1000baseT/Full
> Advertised pause frame use: No
> Advertised auto-negotiation: Yes
> Advertised FEC modes: Not reported
> Link partner advertised link modes: 10baseT/Half 10baseT/Full
> 100baseT/Half 100baseT/Full
> 1000baseT/Full
> Link partner advertised pause frame use: Symmetric Receive-only
> Link partner advertised auto-negotiation: Yes
> Link partner advertised FEC modes: Not reported
> Speed: 1000Mb/s
> Duplex: Full
> Port: MII
> PHYAD: 0
> Transceiver: internal
> Auto-negotiation: on
> Supports Wake-on: ug
> Wake-on: d
> Current message level: 0x0000003f (63)
> drv probe link timer ifdown ifup
> Link detected: yes
> # ifconfig eth0
> eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
> inet 192.168.1.116 netmask 255.255.255.0 broadcast 192.168.1.255
> ether 66:d8:d0:34:f1:cb txqueuelen 1000 (Ethernet)
> RX packets 4420 bytes 292864 (286.0 KiB)
> RX errors 0 dropped 0 overruns 0 frame 0
> TX packets 19165 bytes 28975001 (27.6 MiB)
> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
> device interrupt 21
>
> # iperf3 -c 192.168.1.100
> Connecting to host 192.168.1.100, port 5201
> [ 5] local 192.168.1.116 port 50608 connected to 192.168.1.100 port 5201
> [ ID] Interval Transfer Bitrate Retr Cwnd
> [ 5] 0.00-1.00 sec 111 MBytes 932 Mbits/sec 1 338 KBytes
> [ 5] 1.00-2.00 sec 111 MBytes 930 Mbits/sec 0 351 KBytes
> [ 5] 2.00-3.00 sec 112 MBytes 938 Mbits/sec 0 375 KBytes
> [ 5] 3.00-4.00 sec 112 MBytes 943 Mbits/sec 0 390 KBytes
> [ 5] 4.00-5.00 sec 50.3 MBytes 421 Mbits/sec 1 1.41 KBytes
> [ 5] 5.00-6.00 sec 0.00 Bytes 0.00 bits/sec 1 1.41 KBytes
> [ 5] 6.00-7.00 sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes
> [ 5] 7.00-8.00 sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes
> [ 5] 8.00-9.00 sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes
> [ 5] 10.00-29.11 sec 0.00 Bytes 0.00 bits/sec 2 1.41 KBytes
> <CTRL+C after ~30 seconds>
> - - - - - - - - - - - - - - - - - - - - - - - - -
> [ ID] Interval Transfer Bitrate Retr
> [ 5] 0.00-29.11 sec 496 MBytes 143 Mbits/sec 5 sender
> [ 5] 0.00-29.11 sec 0.00 Bytes 0.00 bits/sec receiver
> iperf3: interrupt - the client has terminated
>
> # ethtool -S eth0
> NIC statistics:
> mmc_tx_octetcount_gb: 0
> mmc_tx_framecount_gb: 0
> mmc_tx_broadcastframe_g: 0
> mmc_tx_multicastframe_g: 0
> mmc_tx_64_octets_gb: 0
> mmc_tx_65_to_127_octets_gb: 0
> mmc_tx_128_to_255_octets_gb: 0
> mmc_tx_256_to_511_octets_gb: 0
> mmc_tx_512_to_1023_octets_gb: 0
> mmc_tx_1024_to_max_octets_gb: 0
> mmc_tx_unicast_gb: 0
> mmc_tx_multicast_gb: 0
> mmc_tx_broadcast_gb: 0
> mmc_tx_underflow_error: 0
> mmc_tx_singlecol_g: 0
> mmc_tx_multicol_g: 0
> mmc_tx_deferred: 0
> mmc_tx_latecol: 0
> mmc_tx_exesscol: 0
> mmc_tx_carrier_error: 0
> mmc_tx_octetcount_g: 0
> mmc_tx_framecount_g: 0
> mmc_tx_excessdef: 0
> mmc_tx_pause_frame: 0
> mmc_tx_vlan_frame_g: 0
> mmc_rx_framecount_gb: 16766
> mmc_rx_octetcount_gb: 1173986
> mmc_rx_octetcount_g: 1173986
> mmc_rx_broadcastframe_g: 98
> mmc_rx_multicastframe_g: 0
> mmc_rx_crc_error: 0
> mmc_rx_align_error: 0
> mmc_rx_run_error: 0
> mmc_rx_jabber_error: 0
> mmc_rx_undersize_g: 0
> mmc_rx_oversize_g: 0
> mmc_rx_64_octets_gb: 96
> mmc_rx_65_to_127_octets_gb: 16669
> mmc_rx_128_to_255_octets_gb: 0
> mmc_rx_256_to_511_octets_gb: 1
> mmc_rx_512_to_1023_octets_gb: 0
> mmc_rx_1024_to_max_octets_gb: 0
> mmc_rx_unicast_g: 16668
> mmc_rx_length_error: 0
> mmc_rx_autofrangetype: 0
> mmc_rx_pause_frames: 0
> mmc_rx_fifo_overflow: 0
> mmc_rx_vlan_frames_gb: 0
> mmc_rx_watchdog_error: 0
> mmc_rx_ipc_intr_mask: 2147385342
> mmc_rx_ipc_intr: 0
> mmc_rx_ipv4_gd: 16671
> mmc_rx_ipv4_hderr: 0
> mmc_rx_ipv4_nopay: 0
> mmc_rx_ipv4_frag: 0
> mmc_rx_ipv4_udsbl: 0
> mmc_rx_ipv4_gd_octets: 867822
> mmc_rx_ipv4_hderr_octets: 0
> mmc_rx_ipv4_nopay_octets: 0
> mmc_rx_ipv4_frag_octets: 0
> mmc_rx_ipv4_udsbl_octets: 0
> mmc_rx_ipv6_gd_octets: 0
> mmc_rx_ipv6_hderr_octets: 0
> mmc_rx_ipv6_nopay_octets: 0
> mmc_rx_ipv6_gd: 0
> mmc_rx_ipv6_hderr: 0
> mmc_rx_ipv6_nopay: 0
> mmc_rx_udp_gd: 28
> mmc_rx_udp_err: 0
> mmc_rx_tcp_gd: 16643
> mmc_rx_tcp_err: 0
> mmc_rx_icmp_gd: 0
> mmc_rx_icmp_err: 0
> mmc_rx_udp_gd_octets: 1068
> mmc_rx_udp_err_octets: 0
> mmc_rx_tcp_gd_octets: 533334
> mmc_rx_tcp_err_octets: 0
> mmc_rx_icmp_gd_octets: 0
> mmc_rx_icmp_err_octets: 0
> tx_underflow: 0
> tx_carrier: 0
> tx_losscarrier: 0
> vlan_tag: 0
> tx_deferred: 0
> tx_vlan: 0
> tx_jabber: 0
> tx_frame_flushed: 0
> tx_payload_error: 0
> tx_ip_header_error: 0
> rx_desc: 0
> sa_filter_fail: 0
> overflow_error: 0
> ipc_csum_error: 0
> rx_collision: 0
> rx_crc_errors: 0
> dribbling_bit: 0
> rx_length: 0
> rx_mii: 0
> rx_multicast: 0
> rx_gmac_overflow: 0
> rx_watchdog: 0
> da_rx_filter_fail: 0
> sa_rx_filter_fail: 0
> rx_missed_cntr: 0
> rx_overflow_cntr: 0
> rx_vlan: 0
> tx_undeflow_irq: 0
> tx_process_stopped_irq: 0
> tx_jabber_irq: 0
> rx_overflow_irq: 0
> rx_buf_unav_irq: 0
> rx_process_stopped_irq: 0
> rx_watchdog_irq: 0
> tx_early_irq: 0
> fatal_bus_error_irq: 0
> rx_early_irq: 11717
> threshold: 1
> tx_pkt_n: 359107
> rx_pkt_n: 16660
> normal_irq_n: 108987
> rx_normal_irq_n: 7449
> napi_poll: 107154
> tx_normal_irq_n: 105918
> tx_clean: 107179
> tx_set_ic_bit: 179554
> irq_receive_pmt_irq_n: 0
> mmc_tx_irq_n: 0
> mmc_rx_irq_n: 0
> mmc_rx_csum_offload_irq_n: 0
> irq_tx_path_in_lpi_mode_n: 0
> irq_tx_path_exit_lpi_mode_n: 0
> irq_rx_path_in_lpi_mode_n: 0
> irq_rx_path_exit_lpi_mode_n: 0
> phy_eee_wakeup_error_n: 0
> ip_hdr_err: 0
> ip_payload_err: 0
> ip_csum_bypassed: 0
> ipv4_pkt_rcvd: 0
> ipv6_pkt_rcvd: 0
> no_ptp_rx_msg_type_ext: 0
> ptp_rx_msg_type_sync: 0
> ptp_rx_msg_type_follow_up: 0
> ptp_rx_msg_type_delay_req: 0
> ptp_rx_msg_type_delay_resp: 0
> ptp_rx_msg_type_pdelay_req: 0
> ptp_rx_msg_type_pdelay_resp: 0
> ptp_rx_msg_type_pdelay_follow_up: 0
> ptp_rx_msg_type_announce: 0
> ptp_rx_msg_type_management: 0
> ptp_rx_msg_pkt_reserved_type: 0
> ptp_frame_type: 0
> ptp_ver: 0
> timestamp_dropped: 0
> av_pkt_rcvd: 0
> av_tagged_pkt_rcvd: 0
> vlan_tag_priority_val: 0
> l3_filter_match: 0
> l4_filter_match: 0
> l3_l4_filter_no_match: 0
> irq_pcs_ane_n: 0
> irq_pcs_link_n: 0
> irq_rgmii_n: 0
> mtl_tx_status_fifo_full: 0
> mtl_tx_fifo_not_empty: 0
> mmtl_fifo_ctrl: 0
> mtl_tx_fifo_read_ctrl_write: 0
> mtl_tx_fifo_read_ctrl_wait: 0
> mtl_tx_fifo_read_ctrl_read: 0
> mtl_tx_fifo_read_ctrl_idle: 0
> mac_tx_in_pause: 0
> mac_tx_frame_ctrl_xfer: 0
> mac_tx_frame_ctrl_idle: 0
> mac_tx_frame_ctrl_wait: 0
> mac_tx_frame_ctrl_pause: 0
> mac_gmii_tx_proto_engine: 0
> mtl_rx_fifo_fill_level_full: 0
> mtl_rx_fifo_fill_above_thresh: 0
> mtl_rx_fifo_fill_below_thresh: 0
> mtl_rx_fifo_fill_level_empty: 0
> mtl_rx_fifo_read_ctrl_flush: 0
> mtl_rx_fifo_read_ctrl_read_data: 0
> mtl_rx_fifo_read_ctrl_status: 0
> mtl_rx_fifo_read_ctrl_idle: 0
> mtl_rx_fifo_ctrl_active: 0
> mac_rx_frame_ctrl_fifo: 0
> mac_gmii_rx_proto_engine: 0
> tx_tso_frames: 0
> tx_tso_nfrags: 0
> # ethtool eth0
> Settings for eth0:
> Supported ports: [ TP MII ]
> Supported link modes: 10baseT/Half 10baseT/Full
> 100baseT/Half 100baseT/Full
> 1000baseT/Full
> Supported pause frame use: Symmetric Receive-only
> Supports auto-negotiation: Yes
> Supported FEC modes: Not reported
> Advertised link modes: 10baseT/Half 10baseT/Full
> 100baseT/Half 100baseT/Full
> 1000baseT/Full
> Advertised pause frame use: No
> Advertised auto-negotiation: Yes
> Advertised FEC modes: Not reported
> Link partner advertised link modes: 10baseT/Half 10baseT/Full
> 100baseT/Half 100baseT/Full
> 1000baseT/Full
> Link partner advertised pause frame use: Symmetric Receive-only
> Link partner advertised auto-negotiation: Yes
> Link partner advertised FEC modes: Not reported
> Speed: 1000Mb/s
> Duplex: Full
> Port: MII
> PHYAD: 0
> Transceiver: internal
> Auto-negotiation: on
> Supports Wake-on: ug
> Wake-on: d
> Current message level: 0x0000003f (63)
> drv probe link timer ifdown ifup
> Link detected: yes
> # ifconfig eth0
> eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
> inet 192.168.1.116 netmask 255.255.255.0 broadcast 192.168.1.255
> ether 66:d8:d0:34:f1:cb txqueuelen 1000 (Ethernet)
> RX packets 21021 bytes 1389130 (1.3 MiB)
> RX errors 0 dropped 0 overruns 0 frame 0
> TX packets 378272 bytes 572598814 (546.0 MiB)
> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
> device interrupt 21
>
>
> Regards
> Martin
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