kern/153951: Intel 10GBase-LR Ethernet card detected as 10GBase-SR

[Steinar Haug]

>Number:         153951
>Category:       kern
>Synopsis:       Intel 10GBase-LR Ethernet card detected as 10GBase-SR
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Jan 13 14:30:10 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator:     Steinar Haug
>Release:        8.2-RC1
>Organization:
Nethelp Consulting
>Environment:
FreeBSD sniffy.lab.ventelo.net 8.2-RC1 FreeBSD 8.2-RC1 #0: Thu Jan 13 14:41:42 CET 2011     sthaug at sniffy.lab.ventelo.net:/usr/src/sys/amd64/compile/GENERIC  amd64

>Description:
I have a server with an Intel X520-LR1 Ethernet card, which is a
10GBase-LR card:

  http://ark.intel.com/Product.aspx?id=41164

The card contains the Intel 82599ES controller:

  http://ark.intel.com/Product.aspx?id=41282

pciconf -lv shows:

ix0 at pci0:28:0:0:        class=0x020000 card=0x00068086 chip=0x10fb8086 rev=0x01 hdr=0x00
    vendor     = 'Intel Corporation'
    class      = network
    subclass   = ethernet

where /sys/dev/ixgbe/ixgbe_type.h has the PCI ID definition:

#define IXGBE_DEV_ID_82599_SFP  0x10FB

The problem is that this card is shown by ifconfig as a 10GBase-SR card:

% ifconfig ix0
ix0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=1bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4>
        ether 00:1b:21:7c:7b:94
        media: Ethernet autoselect (10Gbase-SR <full-duplex>)
        status: active

I believe this is due to the following code in /sys/dev/ixgbe/ixgbe.c
line 423, routine ixgbe_attach():

                case IXGBE_DEV_ID_82599_SFP:
                        adapter->optics = IFM_10G_SR;

I'm looking at version 1.17.2.12.2.1, from 8.2-RC1, but I see this code
is the same in version 1.45, from HEAD:

  http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/ixgbe/ixgbe.c?rev=1.45;content-type=text/plain

>How-To-Repeat:
Insert Intel X520-LR1 Ethernet card into server, compile kernel with ixgbe driver, reboot, type ifconfig, look at the values for the detected ixN card.
>Fix:
Fix pasted in so space/tabs won't be correct:


--- ixgbe.c.orig        2010-12-21 18:09:25.000000000 +0100
+++ ixgbe.c     2011-01-13 14:31:14.000000000 +0100
@@ -421,7 +421,7 @@
                        adapter->optics = IFM_10G_LR;
                        break;
                case IXGBE_DEV_ID_82599_SFP:
-                       adapter->optics = IFM_10G_SR;
+                       adapter->optics = IFM_10G_LR;
                        ixgbe_num_segs = IXGBE_82599_SCATTER;
                        break;
                case IXGBE_DEV_ID_82598_DA_DUAL_PORT :


>Release-Note:
>Audit-Trail:
>Unformatted: