Bug 258757 - [ix] network driver is losing packets
Summary: [ix] network driver is losing packets
Status: New
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: 12.2-RELEASE
Hardware: amd64 Any
: --- Affects Only Me
Assignee: freebsd-net (Nobody)
URL:
Keywords: IntelNetworking
Depends on:
Blocks:
 
Reported: 2021-09-28 09:17 UTC by Vyacheslav Druzhinin
Modified: 2021-09-28 19:55 UTC (History)
2 users (show)

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Description Vyacheslav Druzhinin 2021-09-28 09:17:36 UTC 
The ix network driver is loosing packets.

I ping from host 192.168.205.98 to host 10.0.2.92 trhough freebsd gateway.

This is destination host interface:

dvg@gw:/usr/local/etc# tcpdump -ni vlan7 host 10.0.2.92
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on vlan7, link-type EN10MB (Ethernet), capture size 262144 bytes
10:33:20.881990 IP 192.168.205.98 > 10.0.2.92: ICMP echo request, id 10, seq 1, length 64
10:33:20.882201 IP 10.0.2.92 > 192.168.205.98: ICMP echo reply, id 10, seq 1, length 64
10:33:21.890452 IP 192.168.205.98 > 10.0.2.92: ICMP echo request, id 10, seq 2, length 64
10:33:21.890656 IP 10.0.2.92 > 192.168.205.98: ICMP echo reply, id 10, seq 2, length 64
10:33:22.914468 IP 192.168.205.98 > 10.0.2.92: ICMP echo request, id 10, seq 3, length 64
10:33:22.914684 IP 10.0.2.92 > 192.168.205.98: ICMP echo reply, id 10, seq 3, length 64
10:33:23.938468 IP 192.168.205.98 > 10.0.2.92: ICMP echo request, id 10, seq 4, length 64
10:33:23.938688 IP 10.0.2.92 > 192.168.205.98: ICMP echo reply, id 10, seq 4, length 64

As we can see the replies are in the place.

The source interface:
dvg@gw:/usr/local/etc# tcpdump -ni vlan205 host 10.0.2.92
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on vlan205, link-type EN10MB (Ethernet), capture size 262144 bytes
10:34:33.570316 IP 192.168.205.98 > 10.0.2.92: ICMP echo request, id 10, seq 72, length 64
10:34:34.594365 IP 192.168.205.98 > 10.0.2.92: ICMP echo request, id 10, seq 73, length 64
10:34:35.618334 IP 192.168.205.98 > 10.0.2.92: ICMP echo request, id 10, seq 74, length 64
10:34:36.642349 IP 192.168.205.98 > 10.0.2.92: ICMP echo request, id 10, seq 75, length 64
^C

As we can see the replies are lost. All firewalls are disabled.

The problem has gone when I swithed to 1G igb interfaces on the gateway.

Some additional info:

# uname -a
FreeBSD gw.tjc.ru 12.2-RELEASE-p7 FreeBSD 12.2-RELEASE-p7 GENERIC  amd64

All vlans on top of lagg0 LACP interface which consists from two ix interfaces.

# ifconfig ix0
ix0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=e53fbb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
        ether f8:f2:1e:b1:2d:84
        media: Ethernet autoselect
        status: no carrier
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>

# ifconfig ix1
ix1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=e53fbb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
        ether f8:f2:1e:b1:2d:85
        media: Ethernet autoselect
        status: no carrier
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>


ix0@pci0:3:0:0: class=0x020000 card=0x00038086 chip=0x10fb8086 rev=0x01 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '82599ES 10-Gigabit SFI/SFP+ Network Connection'
    class      = network
    subclass   = ethernet
ix1@pci0:3:0:1: class=0x020000 card=0x00038086 chip=0x10fb8086 rev=0x01 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '82599ES 10-Gigabit SFI/SFP+ Network Connection'
    class      = network
    subclass   = ethernet