icmp packets on em larger than 1472
Kirill Yelizarov
ykirill at yahoo.com
Wed Nov 10 13:55:39 UTC 2010
--- On Wed, 11/10/10, Jeremy Chadwick <freebsd at jdc.parodius.com> wrote:
> From: Jeremy Chadwick <freebsd at jdc.parodius.com>
> Subject: Re: icmp packets on em larger than 1472
> To: "Kirill Yelizarov" <ykirill at yahoo.com>
> Cc: freebsd-stable at freebsd.org, "Jack Vogel" <jfvogel at gmail.com>
> Date: Wednesday, November 10, 2010, 3:59 PM
> On Wed, Nov 10, 2010 at 04:21:12AM
> -0800, Kirill Yelizarov wrote:
> > Hi,
> >
> > All my em cards running 8.1 stable don't reply to icmp
> echo requests packets larger than 1472 bytes.
> >
> > On stable 7.2 the same hardware works as expected:
> > # ping -s 1500 192.168.64.99
> > PING 192.168.64.99 (192.168.64.99): 1500 data bytes
> > 1508 bytes from 192.168.64.99: icmp_seq=0 ttl=63
> time=1.249 ms
> > 1508 bytes from 192.168.64.99: icmp_seq=1 ttl=63
> time=1.158 ms
> >
> > Here is the dump on em interface
> > 15:06:31.452043 IP 192.168.66.65 > *****: ICMP echo
> request, id 28729, seq 5, length 1480
> > 15:06:31.452047 IP 192.168.66.65 > ****: icmp
> > 15:06:31.452069 IP **** > 192.168.66.65: ICMP echo
> reply, id 28729, seq 5, length 1480
> > 15:06:31.452071 IP *** > 192.168.66.65: icmp
> >
> > Same ping from same source (it's a 8.1 stable with fxp
> interface) to em card running 8.1 stable
> > #pciconf -lv
> > em0 at pci0:3:4:0: class=0x020000
> card=0x10798086 chip=0x10798086 rev=0x03 hdr=0x00
> > vendor
> = 'Intel Corporation'
> > device
> = 'Dual Port Gigabit Ethernet Controller
> (82546EB)'
> > class =
> network
> > subclass =
> ethernet
> >
> > # ping -s 1472 192.168.64.200
> > PING 192.168.64.200 (192.168.64.200): 1472 data bytes
> > 1480 bytes from 192.168.64.200: icmp_seq=0 ttl=63
> time=0.848 ms
> > ^C
> >
> > # ping -s 1473 192.168.64.200
> > PING 192.168.64.200 (192.168.64.200): 1473 data bytes
> > ^C
> > --- 192.168.64.200 ping statistics ---
> > 4 packets transmitted, 0 packets received, 100.0%
> packet loss
> >
> > And here is it's dump on em card
> > 5:11:15.191496 IP 192.168.66.65 > *****: ICMP echo
> request, id 33593, seq 0, length 1480
> > 15:11:15.191534 IP 192.168.66.65 > *****: icmp
> > 15:11:16.192119 IP 192.168.66.65 > *****: ICMP echo
> request, id 33593, seq 1, length 1480
> > 15:11:16.192156 IP 192.168.66.65 > ******: icmp
> >
> > igb cards on 8.1 stable are not affected
>
> Please provide uname -a output from the machine with the
> emX devices, as
> well as relevant emX information from "dmesg" (e.g. driver
> version).
> "sysctl dev.em.X" might also be helpful.
>
Here are the two examples
uname -a
FreeBSD border1 8.1-STABLE FreeBSD 8.1-STABLE #0: Thu Aug 26 16:54:15 MSD 2010 root at border1:/usr/obj/usr/src/sys/BORDER1 amd64
Oct 22 14:36:18 border1 kernel: em0: <Intel(R) PRO/1000 Legacy Network Connection 1.0.1> port 0xdc00-0xdc3f mem 0xfcfc0000-0xfcfdffff irq 54 at device 4.0 on pci3
Oct 22 14:36:18 border1 kernel: em0: [FILTER]
Oct 22 14:36:18 border1 kernel: em0: Ethernet address: 00:04:23:cc:df:ea
Oct 22 14:36:18 border1 kernel: em1: <Intel(R) PRO/1000 Legacy Network Connection 1.0.1> port 0xdc80-0xdcbf mem 0xfcfe0000-0xfcffffff irq 55 at device 4.1 on pci3
Oct 22 14:36:18 border1 kernel: em1: [FILTER]
Oct 22 14:36:18 border1 kernel: em1: Ethernet address: 00:04:23:cc:df:eb
dev.em.0.%desc: Intel(R) PRO/1000 Network Connection 7.0.5
dev.em.0.%driver: em
dev.em.0.%location: slot=0 function=0 handle=\_SB_.PCI0.MRP1.HART
dev.em.0.%pnpinfo: vendor=0x8086 device=0x10d3 subvendor=0x8086 subdevice=0x34da class=0x020000
dev.em.0.%parent: pci1
dev.em.0.nvm: -1
dev.em.0.rx_int_delay: 66
dev.em.0.tx_int_delay: 66
dev.em.0.rx_abs_int_delay: 250
dev.em.0.tx_abs_int_delay: 250
dev.em.0.rx_processing_limit: -1
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: 1477444168
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: 2757
dev.em.0.queue0.txd_tail: 2758
dev.em.0.queue0.tx_irq: 0
dev.em.0.queue0.no_desc_avail: 0
dev.em.0.queue0.rxd_head: 1419
dev.em.0.queue0.rxd_tail: 1418
dev.em.0.queue0.rx_irq: 0
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: 1534369705
dev.em.0.mac_stats.good_pkts_recvd: 1534369705
dev.em.0.mac_stats.bcast_pkts_recvd: 197891
dev.em.0.mac_stats.mcast_pkts_recvd: 0
dev.em.0.mac_stats.rx_frames_64: 1528844
dev.em.0.mac_stats.rx_frames_65_127: 466039874
dev.em.0.mac_stats.rx_frames_128_255: 363351691
dev.em.0.mac_stats.rx_frames_256_511: 34424761
dev.em.0.mac_stats.rx_frames_512_1023: 53013458
dev.em.0.mac_stats.rx_frames_1024_1522: 616011077
dev.em.0.mac_stats.good_octets_recvd: 1076352218193
dev.em.0.mac_stats.good_octets_txd: 222914134983
dev.em.0.mac_stats.total_pkts_txd: 1750421340
dev.em.0.mac_stats.good_pkts_txd: 1750421339
dev.em.0.mac_stats.bcast_pkts_txd: 995
dev.em.0.mac_stats.mcast_pkts_txd: 0
dev.em.0.mac_stats.tx_frames_64: 591494
dev.em.0.mac_stats.tx_frames_65_127: 1309064841
dev.em.0.mac_stats.tx_frames_128_255: 320875656
dev.em.0.mac_stats.tx_frames_256_511: 84663967
dev.em.0.mac_stats.tx_frames_512_1023: 14057851
dev.em.0.mac_stats.tx_frames_1024_1522: 21167531
dev.em.0.mac_stats.tso_txd: 0
dev.em.0.mac_stats.tso_ctx_fail: 0
dev.em.0.interrupts.asserts: 1080194011
dev.em.0.interrupts.rx_pkt_timer: 96628
dev.em.0.interrupts.rx_abs_timer: 0
dev.em.0.interrupts.tx_pkt_timer: 36686
dev.em.0.interrupts.tx_abs_timer: 4
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
dev.em.1.%desc: Intel(R) PRO/1000 Network Connection 7.0.5
dev.em.1.%driver: em
dev.em.1.%location: slot=25 function=0 handle=\_SB_.PCI0.ILAN
dev.em.1.%pnpinfo: vendor=0x8086 device=0x10cc subvendor=0x8086 subdevice=0x34da class=0x020000
dev.em.1.%parent: pci0
dev.em.1.nvm: -1
dev.em.1.rx_int_delay: 66
dev.em.1.tx_int_delay: 66
dev.em.1.rx_abs_int_delay: 250
dev.em.1.tx_abs_int_delay: 250
dev.em.1.rx_processing_limit: -1
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: 1477444160
dev.em.1.rx_control: 67141634
dev.em.1.fc_high_water: 8192
dev.em.1.fc_low_water: 6692
dev.em.1.queue0.txd_head: 3081
dev.em.1.queue0.txd_tail: 3081
dev.em.1.queue0.tx_irq: 0
dev.em.1.queue0.no_desc_avail: 0
dev.em.1.queue0.rxd_head: 2535
dev.em.1.queue0.rxd_tail: 2534
dev.em.1.queue0.rx_irq: 0
dev.em.1.mac_stats.excess_coll: 0
dev.em.1.mac_stats.single_coll: 665694
dev.em.1.mac_stats.multiple_coll: 238794
dev.em.1.mac_stats.late_coll: 591710
dev.em.1.mac_stats.collision_count: 1262634
dev.em.1.mac_stats.symbol_errors: 0
dev.em.1.mac_stats.sequence_errors: 0
dev.em.1.mac_stats.defer_count: 62957046
dev.em.1.mac_stats.missed_packets: 0
dev.em.1.mac_stats.recv_no_buff: 0
dev.em.1.mac_stats.recv_undersize: 0
dev.em.1.mac_stats.recv_fragmented: 0
dev.em.1.mac_stats.recv_oversize: 0
dev.em.1.mac_stats.recv_jabber: 0
dev.em.1.mac_stats.recv_errs: 0
dev.em.1.mac_stats.crc_errs: 0
dev.em.1.mac_stats.alignment_errs: 0
dev.em.1.mac_stats.coll_ext_errs: 0
dev.em.1.mac_stats.xon_recvd: 0
dev.em.1.mac_stats.xon_txd: 0
dev.em.1.mac_stats.xoff_recvd: 0
dev.em.1.mac_stats.xoff_txd: 0
dev.em.1.mac_stats.total_pkts_recvd: 143055129
dev.em.1.mac_stats.good_pkts_recvd: 143055129
dev.em.1.mac_stats.bcast_pkts_recvd: 19788
dev.em.1.mac_stats.mcast_pkts_recvd: 0
dev.em.1.mac_stats.rx_frames_64: 0
dev.em.1.mac_stats.rx_frames_65_127: 0
dev.em.1.mac_stats.rx_frames_128_255: 0
dev.em.1.mac_stats.rx_frames_256_511: 0
dev.em.1.mac_stats.rx_frames_512_1023: 0
dev.em.1.mac_stats.rx_frames_1024_1522: 0
dev.em.1.mac_stats.good_octets_recvd: 35245157589
dev.em.1.mac_stats.good_octets_txd: 175509471230
dev.em.1.mac_stats.total_pkts_txd: 210873641
dev.em.1.mac_stats.good_pkts_txd: 210873641
dev.em.1.mac_stats.bcast_pkts_txd: 151
dev.em.1.mac_stats.mcast_pkts_txd: 0
dev.em.1.mac_stats.tx_frames_64: 0
dev.em.1.mac_stats.tx_frames_65_127: 0
dev.em.1.mac_stats.tx_frames_128_255: 0
dev.em.1.mac_stats.tx_frames_256_511: 0
dev.em.1.mac_stats.tx_frames_512_1023: 0
dev.em.1.mac_stats.tx_frames_1024_1522: 0
dev.em.1.mac_stats.tso_txd: 0
dev.em.1.mac_stats.tso_ctx_fail: 0
dev.em.1.interrupts.asserts: 264725703
dev.em.1.interrupts.rx_pkt_timer: 0
dev.em.1.interrupts.rx_abs_timer: 0
dev.em.1.interrupts.tx_pkt_timer: 0
dev.em.1.interrupts.tx_abs_timer: 0
dev.em.1.interrupts.tx_queue_empty: 0
dev.em.1.interrupts.tx_queue_min_thresh: 0
dev.em.1.interrupts.rx_desc_min_thresh: 0
dev.em.1.interrupts.rx_overrun: 0
dev.em.1.wake: 0
uname -a
FreeBSD web2 8.1-STABLE FreeBSD 8.1-STABLE #0: Thu Oct 21 17:24:16 MSD 2010 root at flash-srv:/usr/obj/nanobsd.WEB2_C7899_H16_S63/usr/src/sys/WEB2 amd64
Oct 22 13:06:51 web2 kernel: em0: <Intel(R) PRO/1000 Network Connection 7.0.5> port 0x1000-0x101f mem 0xb1a00000-0xb1a1ffff,0xb1900000-0xb19fffff,0xb1a20000-0xb1a23fff irq 28 at device 0.0 on pci1
Oct 22 13:06:51 web2 kernel: em0: Using MSI interrupt
Oct 22 13:06:51 web2 kernel: em0: [FILTER]
Oct 22 13:06:51 web2 kernel: em0: Ethernet address: 00:15:17:ac:e5:bd
Oct 22 13:06:51 web2 kernel: em1: <Intel(R) PRO/1000 Network Connection 7.0.5> port 0x20e0-0x20ff mem 0xb1b00000-0xb1b1ffff,0xb1b43000-0xb1b43fff irq 20 at device 25.0 on pci0
Oct 22 13:06:51 web2 kernel: em1: Using MSI interrupt
Oct 22 13:06:51 web2 kernel: em1: [FILTER]
Oct 22 13:06:51 web2 kernel: em1: Ethernet address: 00:15:17:ac:e5:bc
Oct 22 13:06:51 web2 kernel: Starting Network: lo0 em0 em1.
Oct 22 13:06:51 web2 kernel: em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
Oct 22 13:06:51 web2 kernel: em1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
Oct 22 13:06:53 web2 kernel: em1: link state changed to UP
Oct 22 13:06:54 web2 kernel: em0: link state changed to UP
dev.em.0.%desc: Intel(R) PRO/1000 Legacy Network Connection 1.0.1
dev.em.0.%driver: em
dev.em.0.%location: slot=4 function=0
dev.em.0.%pnpinfo: vendor=0x8086 device=0x1079 subvendor=0x8086 subdevice=0x1079 class=0x020000
dev.em.0.%parent: pci3
dev.em.0.debug: -1
dev.em.0.stats: -1
dev.em.0.rx_int_delay: 66
dev.em.0.tx_int_delay: 66
dev.em.0.rx_abs_int_delay: 250
dev.em.0.tx_abs_int_delay: 250
dev.em.0.rx_processing_limit: -1
dev.em.1.%desc: Intel(R) PRO/1000 Legacy Network Connection 1.0.1
dev.em.1.%driver: em
dev.em.1.%location: slot=4 function=1
dev.em.1.%pnpinfo: vendor=0x8086 device=0x1079 subvendor=0x8086 subdevice=0x1079 class=0x020000
dev.em.1.%parent: pci3
dev.em.1.debug: -1
dev.em.1.stats: -1
dev.em.1.rx_int_delay: 66
dev.em.1.tx_int_delay: 66
dev.em.1.rx_abs_int_delay: 250
dev.em.1.tx_abs_int_delay: 250
dev.em.1.rx_processing_limit: -1
Kirill
> Thanks.
>
> --
> | Jeremy Chadwick
>
> jdc at parodius.com
> |
> | Parodius Networking
> http://www.parodius.com/ |
> | UNIX Systems Administrator
> Mountain View, CA, USA |
> | Making life hard for others since 1977.
> PGP: 4BD6C0CB |
>
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