Hi. My name is Hitoshi Mitake, nice to meet you. I'm a Japanese part-time enginner of Cluster Computing, Inc. ( http://clustcom.com/ ) At first, please excuse my broken English.
I'm getting in a bind with the problem that hardware CRC frame stripping of e1000e breaks IPMI transmission. I found this problem was discussed in this mailing list a few times before. http://sourceforge.net/mailarchive/forum.php?thread_name=20080616211636.GA5179%40develbox.linuxbox.cz&forum_name=e1000-devel http://sourceforge.net/mailarchive/forum.php?thread_name=200806092007.58402.arekm%40maven.pl&forum_name=e1000-devel So I wrote a little patch, this make users to be able to choose to use hardware CRC frame stripping function or not from menuconfig of kernel. It seems that hardware CRC stripping function don't have to be enabled any time. I know this isn't a radical way to solve the problem. But some people(including me) may glad if this patch is in kernel source tree. As a temporary solution, please use this. When you use this, apply to 2.6.26-rc10. This is the patch: diff -r 005282133715 drivers/net/Kconfig --- a/drivers/net/Kconfig Thu Jul 24 12:03:12 2008 +0900 +++ b/drivers/net/Kconfig Thu Jul 24 13:38:34 2008 +0900 @@ -1954,6 +1954,13 @@ To compile this driver as a module, choose M here. The module will be called e1000e. +config E1000E_DISABLE_HWCRCSTRIP + bool "Disabling e1000e hardware crc frame stripping" + depends on E1000E + help + Say Y if you don't want e1000e to enable hardware crc frame stripping. + This may help you if you want to use IPMI. + config IP1000 tristate "IP1000 Gigabit Ethernet support" depends on PCI && EXPERIMENTAL diff -r 005282133715 drivers/net/e1000e/netdev.c --- a/drivers/net/e1000e/netdev.c Thu Jul 24 12:03:12 2008 +0900 +++ b/drivers/net/e1000e/netdev.c Thu Jul 24 13:38:35 2008 +0900 @@ -1972,8 +1972,10 @@ else rctl |= E1000_RCTL_LPE; +#ifndef CONFIG_E1000E_DISABLE_HWCRCSTRIP /* Enable hardware CRC frame stripping */ rctl |= E1000_RCTL_SECRC; +#endif /* !CONFIG_E1000E_DISABLE_HWCRCSTRIP */ /* Setup buffer sizes */ rctl &= ~E1000_RCTL_SZ_4096; ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel
