Date: Sat, 7 Apr 2012 16:37:15 +0300 From: Konstantin Belousov <kostikbel@gmail.com> To: jfv@freebsd.org Cc: jhb@freebsd.org, net@freebsd.org Subject: 82574L hangs (with r233708 e1000 driver). Message-ID: <20120407133715.GU2358@deviant.kiev.zoral.com.ua>
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--tUz0VHt16N2FDcQT Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable I bought Intel Atom motherboard DN2800MT, which has integrated if_em LOM, reported by pciconf as em0@pci0:1:0:0: class=3D0x020000 card=3D0x20128086 chip=3D0x10d38086 rev=3D= 0x00 hdr=3D0x00 82574L Gigabit Network Connection It seems that any non-trivial network activity on the interface causes reliable interface hang, which can be temporary cured by ifconfig down/up. This happens both with outdated stable/9 sys/dev/e1000 and with driver from HEAD merged into stable/9. I currently use the copy of dev/e1000 at rev. r233708. Disabling MSI-X makes the hand to occur slightly less often. I can reproduce the hang in approximately a minute by scp'ing large file from other machine to /dev/null on the DN2800MT. This makes the board completely unusable for me. The driver reports itself as em0: <Intel(R) PRO/1000 Network Connection 7.3.2> port 0x2000-0x201f mem 0x= c0400000-0xc041ffff,0xc0000000-0xc03fffff,0xc0420000-0xc0423fff irq 16 at d= evice 0.0 on pci1 em0: attempting to allocate 3 MSI-X vectors (5 supported) msi: routing MSI-X IRQ 258 to local APIC 0 vector 60 msi: routing MSI-X IRQ 259 to local APIC 0 vector 61 msi: routing MSI-X IRQ 260 to local APIC 0 vector 62 em0: using IRQs 258-260 for MSI-X em0: Using MSIX interrupts with 3 vectors em0: bpf attached em0: Ethernet address: 00:22:4d:7a:47:f6 em0: Link is up 1000 Mbps Full Duplex The board is connected to ProCurve switch, there is no link flaps. When hang occur, dmesg output of # sysctl dev.em.0.debug=3D1 dev.em.0.debug: Interface is RUNNING and ACTIVE em0: hw tdh =3D 357, hw tdt =3D 357 em0: hw rdh =3D 323, hw rdt =3D 273 em0: Tx Queue Status =3D 0 em0: TX descriptors avail =3D 1024 em0: Tx Descriptors avail failure =3D 0 em0: RX discarded packets =3D 0 em0: RX Next to Check =3D 274 em0: RX Next to Refresh =3D 273 and # sysctl dev.em.0 dev.em.0.%desc: Intel(R) PRO/1000 Network Connection 7.3.2 dev.em.0.%driver: em dev.em.0.%location: slot=3D0 function=3D0 handle=3D\_SB_.PCI0.RP01.PXSX dev.em.0.%pnpinfo: vendor=3D0x8086 device=3D0x10d3 subvendor=3D0x8086 subde= vice=3D0x2012 class=3D0x020000 dev.em.0.%parent: pci1 dev.em.0.nvm: -1 dev.em.0.debug: -1 dev.em.0.fc: 3 dev.em.0.rx_int_delay: 0 dev.em.0.tx_int_delay: 66 dev.em.0.rx_abs_int_delay: 66 dev.em.0.tx_abs_int_delay: 66 dev.em.0.rx_processing_limit: 100 dev.em.0.eee_control: 0 dev.em.0.link_irq: 0 dev.em.0.mbuf_alloc_fail: 0 dev.em.0.cluster_alloc_fail: 0 dev.em.0.dropped: 0 dev.em.0.tx_dma_fail: 0 dev.em.0.rx_overruns: 0 dev.em.0.watchdog_timeouts: 0 dev.em.0.device_control: 1074790984 dev.em.0.rx_control: 67141634 dev.em.0.fc_high_water: 18432 dev.em.0.fc_low_water: 16932 dev.em.0.queue0.txd_head: 400 dev.em.0.queue0.txd_tail: 400 dev.em.0.queue0.tx_irq: 1835 dev.em.0.queue0.no_desc_avail: 0 dev.em.0.queue0.rxd_head: 331 dev.em.0.queue0.rxd_tail: 273 dev.em.0.queue0.rx_irq: 1392 dev.em.0.mac_stats.excess_coll: 0 dev.em.0.mac_stats.single_coll: 0 dev.em.0.mac_stats.multiple_coll: 0 dev.em.0.mac_stats.late_coll: 0 dev.em.0.mac_stats.collision_count: 0 dev.em.0.mac_stats.symbol_errors: 0 dev.em.0.mac_stats.sequence_errors: 0 dev.em.0.mac_stats.defer_count: 0 dev.em.0.mac_stats.missed_packets: 0 dev.em.0.mac_stats.recv_no_buff: 0 dev.em.0.mac_stats.recv_undersize: 0 dev.em.0.mac_stats.recv_fragmented: 0 dev.em.0.mac_stats.recv_oversize: 0 dev.em.0.mac_stats.recv_jabber: 0 dev.em.0.mac_stats.recv_errs: 0 dev.em.0.mac_stats.crc_errs: 0 dev.em.0.mac_stats.alignment_errs: 0 dev.em.0.mac_stats.coll_ext_errs: 0 dev.em.0.mac_stats.xon_recvd: 0 dev.em.0.mac_stats.xon_txd: 0 dev.em.0.mac_stats.xoff_recvd: 0 dev.em.0.mac_stats.xoff_txd: 0 dev.em.0.mac_stats.total_pkts_recvd: 6475 dev.em.0.mac_stats.good_pkts_recvd: 6475 dev.em.0.mac_stats.bcast_pkts_recvd: 3 dev.em.0.mac_stats.mcast_pkts_recvd: 1 dev.em.0.mac_stats.rx_frames_64: 4 dev.em.0.mac_stats.rx_frames_65_127: 220 dev.em.0.mac_stats.rx_frames_128_255: 12 dev.em.0.mac_stats.rx_frames_256_511: 17 dev.em.0.mac_stats.rx_frames_512_1023: 907 dev.em.0.mac_stats.rx_frames_1024_1522: 5315 dev.em.0.mac_stats.good_octets_recvd: 8963959 dev.em.0.mac_stats.good_octets_txd: 331463 dev.em.0.mac_stats.total_pkts_txd: 4297 dev.em.0.mac_stats.good_pkts_txd: 4297 dev.em.0.mac_stats.bcast_pkts_txd: 4 dev.em.0.mac_stats.mcast_pkts_txd: 0 dev.em.0.mac_stats.tx_frames_64: 4 dev.em.0.mac_stats.tx_frames_65_127: 4146 dev.em.0.mac_stats.tx_frames_128_255: 122 dev.em.0.mac_stats.tx_frames_256_511: 18 dev.em.0.mac_stats.tx_frames_512_1023: 1 dev.em.0.mac_stats.tx_frames_1024_1522: 6 dev.em.0.mac_stats.tso_txd: 0 dev.em.0.mac_stats.tso_ctx_fail: 0 dev.em.0.interrupts.asserts: 3 dev.em.0.interrupts.rx_pkt_timer: 0 dev.em.0.interrupts.rx_abs_timer: 0 dev.em.0.interrupts.tx_pkt_timer: 0 dev.em.0.interrupts.tx_abs_timer: 0 dev.em.0.interrupts.tx_queue_empty: 0 dev.em.0.interrupts.tx_queue_min_thresh: 0 dev.em.0.interrupts.rx_desc_min_thresh: 0 dev.em.0.interrupts.rx_overrun: 0 #=20 Any help ? --tUz0VHt16N2FDcQT Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (FreeBSD) iEYEARECAAYFAk+AQwoACgkQC3+MBN1Mb4gPygCfYnbGWH8nKI164thCu9zdxkSI KRgAn0sCUdMObv1yjy/elnNpDMrit89s =a/qn -----END PGP SIGNATURE----- --tUz0VHt16N2FDcQT--
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