On 4/18/2014 4:57 AM, Nicholas A. Bellinger wrote:
Hi Tony,
(CC'ing target-devel list)
On Thu, 2014-04-17 at 07:00 +0000, 서정민 wrote:
Hi, Nicholas,
Nice to meet you, just one simple question.
I am trying to figure out setting up iSER target with the mellanox
card attached.
The current mellanox driver(2.1.0) does not have the ib_isert kernel
module inside,
Not sure what the plan is for ib_isert wrt to the OFED distro.
CC'ing some Mellanox folks for that bit..
and, as expected, it fails to load the updated version of the ib_isert
module with the mellanox driver, due to the version problem.
Yes, the ib_isert would need to be built against OFED source, and not
upstream sources.
I wonder whether you have any suggestion to resolve this situation, or
any manual to use a mellanox card with your isert module.
Hey Nic, Tony & Co,
So MOFED updates IB core modules which breaks symbol resolution for
ib_isert.
You can recompile ib_isert against MOFED sources using the following steps:
(1) Patch kernel Makefile to accept pre-includes:
$ cd /lib/modules/`uname -r`/build
$ patch -p1 < kernel-3.12-pre-cflags.patch [Attached]
(2) Rebuild ib_isert (with pre-includes):
$ cd /lib/modules/`uname -r`/build/drivers/infiniband/ulp_isert
$ Make -C <path_to_kernel_sources> SUBDIRS=$PWD
KBUILD_EXTRA_SYMBOLS=/usr/src/ofa_kernel/default/Module.symvers \
PRE_CFLAGS="-I/usr/src/ofa_kernel/default/include -include
/usr/src/ofa_kernel/default/include/linux/compat-2.6.h" -j
$ Make -C <path_to_kernel_sources> SUBDIRS=$PWD modules_install -j
$depmod -a
$modprobe -r ib_isert && modprobe ib_isert
(3) Revert the kernel Makefile patch:
$ cd /lib/modules/`uname -r`/build
$ patch -p1 --reverse < kernel-3.12-pre-cflags.patch
That should do the job...
Hope this helps,
Sagi.
diff --git a/Makefile b/Makefile
index 540f7b2..078307f 100644
--- a/Makefile
+++ b/Makefile
@@ -361,6 +361,7 @@ USERINCLUDE := \
# Use LINUXINCLUDE when you must reference the include/ directory.
# Needed to be compatible with the O= option
LINUXINCLUDE := \
+ $(PRE_CFLAGS) \
-I$(srctree)/arch/$(hdr-arch)/include \
-Iarch/$(hdr-arch)/include/generated \
$(if $(KBUILD_SRC), -I$(srctree)/include) \
