Intel NIC stops working

[Johannes]

Hi,

I use an Intel dual nic for my home server. About two weeks ago, it
started to randomly stop
working. A reboot solved this problem. Today it did not even work
after a reboot.

Since the cooling of my server was insufficient for this summers heat,
it might be a hardware
issue.

I already checked the cable, that seems to be fine. I also ran the
Intel diagnostics (on windows)
on the cable and on the card, which showed that everything is ok.

Any idea what the reason might be is appreciated :)

See debug infos below. What is especially strange is
dev.em.1.debug: -1. I cannot change this, it will stay at -1. Also,
the error count numbers from
sysctl are mostly the same, which is very strange.

uname -a
FreeBSD frege.fritz.box 8.2-STABLE FreeBSD 8.2-STABLE #15: Tue Aug  9
00:00:57 CEST 2011     root at frege.fritz.box:/usr/obj/usr/src/sys/FREGE
 amd64

netstat -i
Name    Mtu Network       Address              Ipkts Ierrs Idrop
Opkts Oerrs  Coll
em1    9000 <Link#2>      00:15:17:51:b4:8f       69 45908905416340
 0       61 13116830118930 6558415059465

pciconf -lv
em0 at pci0:1:0:0:	class=0x020000 card=0x125e8086 chip=0x105e8086 rev=0x06 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'HP NC360T PCIe DP Gigabit Server Adapter (n1e5132)'
    class      = network
    subclass   = ethernet
em1 at pci0:1:0:1:	class=0x020000 card=0x125e8086 chip=0x105e8086 rev=0x06 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'HP NC360T PCIe DP Gigabit Server Adapter (n1e5132)'
    class      = network
    subclass   = ethernet

sysctl dev.em.1
dev.em.1.%desc: Intel(R) PRO/1000 Network Connection 7.2.3
dev.em.1.%driver: em
dev.em.1.%location: slot=0 function=1
dev.em.1.%pnpinfo: vendor=0x8086 device=0x105e subvendor=0x8086
subdevice=0x125e class=0x020000
dev.em.1.%parent: pci1
dev.em.1.nvm: -1
dev.em.1.debug: -1
dev.em.1.rx_int_delay: 0
dev.em.1.tx_int_delay: 66
dev.em.1.rx_abs_int_delay: 66
dev.em.1.tx_abs_int_delay: 66
dev.em.1.rx_processing_limit: 100
dev.em.1.flow_control: 3
dev.em.1.eee_control: 0
dev.em.1.link_irq: 0
dev.em.1.mbuf_alloc_fail: 0
dev.em.1.cluster_alloc_fail: 0
dev.em.1.dropped: 0
dev.em.1.tx_dma_fail: 0
dev.em.1.rx_overruns: 0
dev.em.1.watchdog_timeouts: 0
dev.em.1.device_control: 4294967295
dev.em.1.rx_control: 4294967295
dev.em.1.fc_high_water: 55296
dev.em.1.fc_low_water: 53796
dev.em.1.queue0.txd_head: 4294967295
dev.em.1.queue0.txd_tail: 4294967295
dev.em.1.queue0.tx_irq: 0
dev.em.1.queue0.no_desc_avail: 0
dev.em.1.queue0.rxd_head: 4294967295
dev.em.1.queue0.rxd_tail: 4294967295
dev.em.1.queue0.rx_irq: 0
dev.em.1.mac_stats.excess_coll: 4947802323840
dev.em.1.mac_stats.single_coll: 4947802323840
dev.em.1.mac_stats.multiple_coll: 4947802323840
dev.em.1.mac_stats.late_coll: 4947802323840
dev.em.1.mac_stats.collision_count: 4947802323840
dev.em.1.mac_stats.symbol_errors: 4947802323840
dev.em.1.mac_stats.sequence_errors: 4947802323840
dev.em.1.mac_stats.defer_count: 4947802323840
dev.em.1.mac_stats.missed_packets: 4947802323925
dev.em.1.mac_stats.recv_no_buff: 4947802323840
dev.em.1.mac_stats.recv_undersize: 4947802323840
dev.em.1.mac_stats.recv_fragmented: 4947802323840
dev.em.1.mac_stats.recv_oversize: 4947802323840
dev.em.1.mac_stats.recv_jabber: 4947802323840
dev.em.1.mac_stats.recv_errs: 4947802323840
dev.em.1.mac_stats.crc_errs: 4947802323840
dev.em.1.mac_stats.alignment_errs: 4947802323840
dev.em.1.mac_stats.coll_ext_errs: 4947802323840
dev.em.1.mac_stats.xon_recvd: 4947802323840
dev.em.1.mac_stats.xon_txd: 4947802323840
dev.em.1.mac_stats.xoff_recvd: -1152
dev.em.1.mac_stats.xoff_txd: 4947802323840
dev.em.1.mac_stats.total_pkts_recvd: 4947802324218
dev.em.1.mac_stats.good_pkts_recvd: 4947802324133
dev.em.1.mac_stats.bcast_pkts_recvd: 4947802323919
dev.em.1.mac_stats.mcast_pkts_recvd: 4947802324054
dev.em.1.mac_stats.rx_frames_64: 4947802323840
dev.em.1.mac_stats.rx_frames_65_127: 4947802323985
dev.em.1.mac_stats.rx_frames_128_255: 4947802323879
dev.em.1.mac_stats.rx_frames_256_511: 4947802323949
dev.em.1.mac_stats.rx_frames_512_1023: 4947802323840
dev.em.1.mac_stats.rx_frames_1024_1522: 4947802323840
dev.em.1.mac_stats.good_octets_recvd: 60519
dev.em.1.mac_stats.good_octets_txd: 4643
dev.em.1.mac_stats.total_pkts_txd: 4947802323860
dev.em.1.mac_stats.good_pkts_txd: 4947802323860
dev.em.1.mac_stats.bcast_pkts_txd: 4947802323840
dev.em.1.mac_stats.mcast_pkts_txd: 4947802323860
dev.em.1.mac_stats.tx_frames_64: 4947802323840
dev.em.1.mac_stats.tx_frames_65_127: 4947802323848
dev.em.1.mac_stats.tx_frames_128_255: 4947802323846
dev.em.1.mac_stats.tx_frames_256_511: 4947802323843
dev.em.1.mac_stats.tx_frames_512_1023: 4947802323843
dev.em.1.mac_stats.tx_frames_1024_1522: 4947802323840
dev.em.1.mac_stats.tso_txd: 4947802323840
dev.em.1.mac_stats.tso_ctx_fail: 4952097291135
dev.em.1.interrupts.asserts: 4947802323925
dev.em.1.interrupts.rx_pkt_timer: 4947802323840
dev.em.1.interrupts.rx_abs_timer: 4947802323840
dev.em.1.interrupts.tx_pkt_timer: 4947802323840
dev.em.1.interrupts.tx_abs_timer: 4947802323840
dev.em.1.interrupts.tx_queue_empty: 4947802323840
dev.em.1.interrupts.tx_queue_min_thresh: 4947802323840
dev.em.1.interrupts.rx_desc_min_thresh: 4947802323840
dev.em.1.interrupts.rx_overrun: 4947802323840