- # at this point we know that the user either explicitly
- # requested o2ib support or didn't explicitly disable it so
- # make sure the kernel's CONFIG_INFINIBAND variable is set
- # appropriately.
- #
- # possible error conditions are:
- # 1) --with-o2ib[=yes] (implies in kernel since no path was
- # given) and kernel not configured for IB
- # 2) --with-o2ib=/path and kernel is configured for IB
- #
- if test "$O2IBPATH" = "$LINUX" -o "$O2IBPATH" = "$LINUX/drivers/infiniband"; then
- # infiniband stack is in the kernel
- if test $ENABLEO2IB -eq 1 -o $ENABLEO2IB -eq 2 && ! $CONFIG_INFINIBAND_MODULE_defined; then
- # case #1
- AC_MSG_ERROR([Kernel supplied OFED drivers are being requested however the kernel is NOT configured to build OFED modules. Please specify --with-o2ib=<path_to_ofed> or rebuild the kernel with Infiniband enabled.])
- fi
- else
- # had to be a specified path with --with-o2ib=/path
- if $CONFIG_INFINIBAND_MODULE_defined; then
- # case #2
- AC_MSG_ERROR([External OFED source has been specified but the kernel is configured to build OFED modules as well. Remove --with-o2ib from the configuration or rebuild the kernel without Infiniband.])
- fi
- fi
- if $o2ib_found; then
- O2IBCPPFLAGS="-I$O2IBPATH/include"
- EXTRA_KCFLAGS_save="$EXTRA_KCFLAGS"
- EXTRA_KCFLAGS="$EXTRA_KCFLAGS $O2IBCPPFLAGS"
- EXTRA_LNET_INCLUDE="$O2IBCPPFLAGS $EXTRA_LNET_INCLUDE"
- LB_LINUX_TRY_COMPILE([
- #include <linux/version.h>
- #include <linux/pci.h>
- #if !HAVE_GFP_T
- typedef int gfp_t;
- #endif
- #include <rdma/rdma_cm.h>
- #include <rdma/ib_cm.h>
- #include <rdma/ib_verbs.h>
- #include <rdma/ib_fmr_pool.h>
- ],[
- struct rdma_cm_id *cm_id;
- struct rdma_conn_param conn_param;
- struct ib_device_attr device_attr;
- struct ib_qp_attr qp_attr;
- struct ib_pool_fmr pool_fmr;
- enum ib_cm_rej_reason rej_reason;
-
- cm_id = rdma_create_id(NULL, NULL, RDMA_PS_TCP);
- return PTR_ERR(cm_id);
- ],[
- AC_MSG_RESULT([yes])
- O2IBLND="o2iblnd"
- ],[
- AC_MSG_RESULT([no])
- case $ENABLEO2IB in
- 1) ;;
- 2) AC_MSG_ERROR([can't compile with kernel OpenIB gen2 headers]);;
- 3) AC_MSG_ERROR([can't compile with OpenIB gen2 headers under $O2IBPATH]);;
- *) AC_MSG_ERROR([internal error]);;
- esac
- O2IBLND=""
- O2IBCPPFLAGS=""
- ])
- # we know at this point that the found OFED source is good
- O2IB_SYMVER=""
- if test $ENABLEO2IB -eq 3 ; then
- # OFED default rpm not handle sles10 Modules.symvers name
- for name in Module.symvers Modules.symvers; do
- if test -f $O2IBPATH/$name; then
- O2IB_SYMVER=$name;
- break;
- fi
- done
- if test -n $O2IB_SYMVER ; then
- AC_MSG_NOTICE([adding $O2IBPATH/$O2IB_SYMVER to $PWD/$SYMVERFILE])
- # strip out the existing symbols versions first
- egrep -v $(echo $(awk '{ print $2 }' $O2IBPATH/$O2IB_SYMVER) | tr ' ' '|') $PWD/$SYMVERFILE > $PWD/$SYMVERFILE.old
- cat $PWD/$SYMVERFILE.old $O2IBPATH/$O2IB_SYMVER > $PWD/$SYMVERFILE
- else
- AC_MSG_ERROR([an external source tree was specified for o2iblnd however I could not find a $O2IBPATH/Module.symvers there])