lnet/autoconf/lustre-lnet.m4

   1 # SPDX-License-Identifier: GPL-2.0
   2
   3 #
   4 # This file is part of Lustre, http://www.lustre.org/
   5 #
   6
   7 # LN_CONFIG_BACKOFF
   8 #
   9 # check if tunable tcp backoff is available/wanted
  10 #
  11 AC_DEFUN([LN_CONFIG_BACKOFF], [
  12 AC_MSG_CHECKING([whether to enable tunable backoff TCP support])
  13 AC_ARG_ENABLE([backoff],
  14         AS_HELP_STRING([--disable-backoff],
  15                 [disable socknal tunable backoff]),
  16         [], [enable_backoff="yes"])
  17 AC_MSG_RESULT([$enable_backoff])
  18 AS_IF([test "x$enable_backoff" = xyes], [
  19         AC_MSG_CHECKING([if Linux kernel has tunable backoff TCP support])
  20         AS_IF([grep -c TCP_BACKOFF $LINUX/include/linux/tcp.h >/dev/null], [
  21                 AC_MSG_RESULT([yes])
  22                 AC_DEFINE(SOCKNAL_BACKOFF, 1, [use tunable backoff TCP])
  23                 AS_IF([grep rto_max $LINUX/include/linux/tcp.h | grep -q __u16 >/dev/null],
  24                         [AC_DEFINE(SOCKNAL_BACKOFF_MS, 1,
  25                                 [tunable backoff TCP in ms])])
  26         ], [
  27                 AC_MSG_RESULT([no])
  28         ])
  29
  30         AC_SUBST(ENABLE_BACKOFF, yes)
  31 ], [
  32         AC_SUBST(ENABLE_BACKOFF, no)
  33
  34 ])
  35 ]) # LN_CONFIG_BACKOFF
  36
  37 #
  38 # LN_CONFIG_DLC
  39 #
  40 # Configure dlc
  41 #
  42 # fail to build if libyaml is not installed
  43 #
  44 AC_DEFUN([LN_CONFIG_DLC], [
  45         AS_IF([test "x$enable_dist" = xno], [
  46                 AC_CHECK_LIB([yaml], [yaml_parser_initialize],
  47                              [LIBYAML="libyaml"],
  48                              [AC_MSG_ERROR([YAML development libraries not not installed])],
  49                              [-lm])
  50         ])
  51 ]) # LN_CONFIG_DLC
  52
  53 #
  54 # LN_CONFIG_O2IB
  55 #
  56 # If current OFED installed (assume with "ofed_info") and devel
  57 # headers are not found, error because we assume OFED infiniband
  58 # driver needs to be used and we must configure/build with it.
  59 # Current OFED headers detection mechanism allow for non-standard
  60 # prefix but relies on "ofed_info" command and on "%prefix/openib"
  61 # link (both are ok for 1.5.x and 3.x versions), and should work
  62 # for both source and DKMS builds.
  63 #
  64 AC_DEFUN([LN_CONFIG_O2IB], [
  65 AC_ARG_ENABLE([multiple-lnds],
  66         [AS_HELP_STRING([--enable-multiple-lnds],
  67                 [enable multiple lnds to build in-kernel and external o2iblnd])],
  68         [AS_IF([test x$enable_multiple_lnds != xyes -a x$enable_multiple_lnds != xno],
  69                 [AC_MSG_ERROR([multiple-lnds valid options are "yes" or "no"])])],
  70         [enable_multiple_lnds="no"])
  71         ENABLE_MULTIPLE_LNDS="$enable_multiple_lnds"
  72
  73 AC_MSG_CHECKING([if external o2iblnd needs to use Compat RDMA])
  74 AC_ARG_WITH([o2ib],
  75         AS_HELP_STRING([--with-o2ib=[yes|no|<path>]],
  76                 [build o2iblnd against path]),
  77         [], [with_o2ib="yes"])
  78
  79 case $with_o2ib in
  80         yes)    INT_O2IBPATHS="$LINUX $LINUX/drivers/infiniband"
  81                 BUILT_IN_KO2IBLND="yes"
  82                 # Use ofed_info to find external driver
  83                 AS_IF([which ofed_info 2>/dev/null], [
  84                         AS_IF([test x$uses_dpkg = xyes], [
  85                                 LIST_ALL_PKG="dpkg -l | awk '{print \[$]2}'"
  86                                 LSPKG="dpkg --listfiles"
  87                         ], [
  88                                 LIST_ALL_PKG="rpm -qa"
  89                                 LSPKG="rpm -ql"
  90                         ])
  91
  92                         O2IBPKG="mlnx-ofed-kernel-dkms"
  93                         O2IBPKG+="|mlnx-ofed-kernel-modules"
  94                         O2IBPKG+="|mlnx-ofa_kernel-devel"
  95                         O2IBPKG+="|compat-rdma-devel"
  96                         O2IBPKG+="|kernel-ib-devel"
  97                         O2IBPKG+="|ofa_kernel-devel"
  98
  99                         O2IBDIR="/ofa_kernel"
 100                         O2IBDIR+="|/ofa_kernel/default"
 101                         O2IBDIR+="|/openib"
 102
 103                         O2IBDIR_PATH=$(eval $LIST_ALL_PKG |
 104                                        egrep -w "$O2IBPKG" | xargs $LSPKG |
 105                                        egrep "${O2IBDIR}$" | head -n1)
 106
 107                         if test -n "$O2IBDIR_PATH"; then
 108                                 EXT_O2IBPATHS=$(find $O2IBDIR_PATH -name rdma_cm.h |
 109                                         grep -F -e "$(uname -r)" -e default |
 110                                         sed -e 's/\/include\/rdma\/rdma_cm.h//')
 111                         fi
 112
 113                         # When ofed-scripts are installed and either the devel
 114                         # package is missing or multiple devel packages are
 115                         # installed. Give the user a warning
 116                         # The in-kernel ofed stack can be built .. so we can
 117                         # proceed.
 118
 119                         EXTERNAL_KO2IBLND="yes"
 120                         AS_IF([test -z "$EXT_O2IBPATHS"], [
 121                                 EXTERNAL_KO2IBLND="no"
 122                                 AC_MSG_WARN([
 123 * You seem to have an OFED installed but have not installed the associated
 124 * devel package.
 125 * If you still want to build Lustre for your External OFED I/B stack,
 126 * you need to install its devel headers RPM.
 127 * Only the kernel built-in I/B stack support will be built.
 128                                              ])
 129                         ])
 130                         AS_IF([test $(echo $EXT_O2IBPATHS | wc -w) -ge 2], [
 131                                 BUILT_IN_KO2IBLND="no"
 132                                 AC_MSG_WARN([
 133 * It appears that you have multiple OFED versions installed.
 134 * If you still want to build Lustre for your External OFED I/B stack, you
 135 * need to install a single version with the associated devel package.
 136 * Only the kernel built-in I/B stack support will be built.
 137                                      ])
 138                         ])
 139                         if test x$EXTERNAL_KO2IBLND != "xno" ; then
 140                                 if test -e $EXT_O2IBPATHS/${LINUXRELEASE}; then
 141                                     EXT_O2IBPATHS=$EXT_O2IBPATHS/${LINUXRELEASE}
 142                                 elif test -e $EXT_O2IBPATHS/default; then
 143                                     EXT_O2IBPATHS=$EXT_O2IBPATHS/default
 144                                 fi
 145                         fi
 146                 ])
 147                 ENABLEO2IB="yes"
 148                 ;;
 149         no)     ENABLEO2IB="no"
 150                 EXTERNAL_KO2IBLND="no"
 151                 BUILT_IN_KO2IBLND="no"
 152                 ;;
 153         *)      ENABLEO2IB="withpath"
 154                 EXT_O2IBPATHS=$with_o2ib
 155                 EXTERNAL_KO2IBLND="yes"
 156                 INT_O2IBPATHS="$LINUX $LINUX/drivers/infiniband"
 157                 BUILT_IN_KO2IBLND="yes"
 158                 ;;
 159 esac
 160
 161 AS_IF([test $ENABLEO2IB = "no"], [
 162         AC_MSG_RESULT([no])
 163         AC_DEFUN([LN_CONFIG_O2IB_SRC], [])
 164         AC_DEFUN([LN_CONFIG_O2IB_RESULTS], [])
 165         EXT_O2IB_SYMBOLS=""
 166         INT_O2IB_SYMBOLS=""
 167 ], [
 168         # Verify in-kernel O2IB can be built (headers exist) ... or disable it.
 169         int_o2ib_found=false
 170         for INT_O2IBPATH in $INT_O2IBPATHS; do
 171                 AS_IF([test \( -f ${INT_O2IBPATH}/include/rdma/rdma_cm.h -a \
 172                            -f ${INT_O2IBPATH}/include/rdma/ib_cm.h -a \
 173                            -f ${INT_O2IBPATH}/include/rdma/ib_verbs.h \)], [
 174                         int_o2ib_found=true
 175                         break
 176                 ])
 177         done
 178         if ! $int_o2ib_found; then
 179                 AC_MSG_WARN([kernel does not support in-kernel o2ib, it will not be built])
 180                 BUILT_IN_KO2IBLND="no"
 181         fi
 182
 183         # Verify external O2IB can be built (headers exist), or abort
 184         ext_o2ib_found=false
 185         for EXT_O2IBPATH in $EXT_O2IBPATHS; do
 186                 AS_IF([test \( -f ${EXT_O2IBPATH}/include/rdma/rdma_cm.h -a \
 187                            -f ${EXT_O2IBPATH}/include/rdma/ib_cm.h -a \
 188                            -f ${EXT_O2IBPATH}/include/rdma/ib_verbs.h \)], [
 189                         ext_o2ib_found=true
 190                         break
 191                 ])
 192         done
 193         if ! $ext_o2ib_found; then
 194                 case $EXT_ENABLEO2IB in
 195                         "withpath") AC_MSG_ERROR([bad --with-o2ib path]) ;;
 196                         *)      AC_MSG_WARN([
 197 Auto detection of external O2IB failed. Build of external o2ib disabled.])
 198                                 EXTERNAL_KO2IBLND="no"
 199                                 ;;
 200                 esac
 201         fi
 202
 203         if test "x$EXTERNAL_KO2IBLND" != no ; then
 204                 # Additional checks for external O2IB
 205                 COMPAT_AUTOCONF=""
 206                 compatrdma_found=false
 207                 if test -f ${EXT_O2IBPATH}/include/linux/compat-2.6.h; then
 208                         AC_MSG_RESULT([yes])
 209                         compatrdma_found=true
 210                         AC_DEFINE(HAVE_OFED_COMPAT_RDMA, 1, [compat rdma found])
 211                         EXTRA_OFED_CONFIG="$EXTRA_OFED_CONFIG -include ${EXT_O2IBPATH}/include/linux/compat-2.6.h"
 212                         if test -f "$EXT_O2IBPATH/include/linux/compat_autoconf.h"; then
 213                                 COMPAT_AUTOCONF="$EXT_O2IBPATH/include/linux/compat_autoconf.h"
 214                         fi
 215                 else
 216                         AC_MSG_RESULT([no])
 217                 fi
 218                 if ! $compatrdma_found; then
 219                         if test -f "$EXT_O2IBPATH/config.mk"; then
 220                                 . "$EXT_O2IBPATH/config.mk"
 221                         elif test -f "$EXT_O2IBPATH/ofed_patch.mk"; then
 222                                 . "$EXT_O2IBPATH/ofed_patch.mk"
 223                         fi
 224                 elif test -z "$COMPAT_AUTOCONF"; then
 225                         # Depreciated checks
 226                         if test "x$RHEL_KERNEL" = xyes; then
 227                                 RHEL_MAJOR=$(awk '/ RHEL_MAJOR / { print [$]3 }' $LINUX_OBJ/include/$VERSION_HDIR/version.h)
 228                                 I=$(awk '/ RHEL_MINOR / { print [$]3 }' $LINUX_OBJ/include/$VERSION_HDIR/version.h)
 229                                 while test "$I" -ge 0; do
 230                                         EXTRA_OFED_INCLUDE="$EXTRA_OFED_INCLUDE -DCONFIG_COMPAT_RHEL_${RHEL_MAJOR}_$I"
 231                                         I=$(($I-1))
 232                                 done
 233                         elif test "x$SUSE_KERNEL" = xyes; then
 234                                 SP=$(grep PATCHLEVEL /etc/SuSE-release | sed -e 's/.*= *//')
 235                                 EXTRA_OFED_INCLUDE="$EXTRA_OFED_INCLUDE -DCONFIG_COMPAT_SLES_11_$SP"
 236                         fi
 237                 fi
 238
 239                 AC_MSG_CHECKING([whether to use any OFED backport headers])
 240                 if test -n "$BACKPORT_INCLUDES"; then
 241                         AC_MSG_RESULT([yes])
 242                         OFED_BACKPORT_PATH="$EXT_O2IBPATH/${BACKPORT_INCLUDES/*\/kernel_addons/kernel_addons}/"
 243                         EXTRA_OFED_INCLUDE="-I$OFED_BACKPORT_PATH $EXTRA_OFED_INCLUDE"
 244                 else
 245                         AC_MSG_RESULT([no])
 246                 fi
 247
 248                 EXT_O2IBLND=""
 249                 EXT_O2IBPATH=$(readlink --canonicalize $EXT_O2IBPATH)
 250                 EXTRA_OFED_INCLUDE="$EXTRA_OFED_INCLUDE -I$EXT_O2IBPATH/include"
 251                 EXTRA_OFED_INCLUDE="$EXTRA_OFED_INCLUDE -I$EXT_O2IBPATH/include/uapi"
 252                 EXTRA_CHECK_INCLUDE="$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE"
 253                 LB_CHECK_COMPILE([whether to enable OpenIB gen2 support],
 254                 openib_gen2_support, [
 255                         #ifdef HAVE_OFED_COMPAT_RDMA
 256                         #undef PACKAGE_NAME
 257                         #undef PACKAGE_TARNAME
 258                         #undef PACKAGE_VERSION
 259                         #undef PACKAGE_STRING
 260                         #undef PACKAGE_BUGREPORT
 261                         #undef PACKAGE_URL
 262                         #include <linux/compat-2.6.h>
 263                         #endif
 264                         #include <linux/version.h>
 265                         #include <linux/pci.h>
 266                         #include <linux/gfp.h>
 267                         #include <rdma/rdma_cm.h>
 268                         #include <rdma/ib_cm.h>
 269                         #include <rdma/ib_verbs.h>
 270                 ],[
 271                         struct rdma_cm_id *cm_idi __attribute__ ((unused));
 272                         struct rdma_conn_param conn_param __attribute__ ((unused));
 273                         struct ib_device_attr device_attr __attribute__ ((unused));
 274                         struct ib_qp_attr qp_attr __attribute__ ((unused));
 275                         enum ib_cm_rej_reason rej_reason __attribute__ ((unused));
 276
 277                         rdma_destroy_id(NULL);
 278                 ],[
 279                         EXT_O2IBLND="o2iblnd"
 280                 ],[
 281                         case $ENABLEO2IB in
 282                         "yes") AC_MSG_ERROR([cannot compile with OpenIB gen2 headers]) ;;
 283                         "withpath") AC_MSG_ERROR([cannot compile with OpenIB gen2 headers under $EXT_O2IBPATH]) ;;
 284                         *) AC_MSG_ERROR([internal error]) ;;
 285                         esac
 286                 ])
 287                 # we know that the found external OFED source+headers are good
 288                 EXT_O2IB_SYMBOLS=""
 289                 CHECK_SYMBOLS=""
 290                 if test -f $EXT_O2IBPATH/Module.symvers ; then
 291                         CHECK_SYMBOLS=$EXT_O2IBPATH/Module.symvers
 292                 fi
 293                 if test -n "$CHECK_SYMBOLS"; then
 294                         if test ! "$CHECK_SYMBOLS" -ef "$LINUX_OBJ/Module.symvers"; then
 295                                 AC_MSG_NOTICE([adding $CHECK_SYMBOLS to external o2ib symbols])
 296                                 EXT_O2IB_SYMBOLS="${CHECK_SYMBOLS}"
 297                         else
 298                                 EXTERNAL_KO2IBLND="no"
 299                         fi
 300                 elif test "x$EXTERNAL_KO2IBLND" != "xno" ; then
 301                         AC_MSG_WARN([
 302         * Module.symvers for external o2iblnd was not found.
 303         * Expected: $EXT_O2IBPATH/Module.symvers
 304         * ko2iblnd.ko for external OFED will not be built.
 305                                     ])
 306                         EXTERNAL_KO2IBLND="no"
 307                 fi
 308         fi
 309
 310         # we suspect that the found in-kernel OFED source+headers are good
 311         # the above compile test *could* be repeated with in-kernel paths ...
 312         INT_O2IB_SYMBOLS=""
 313         CHECK_SYMBOLS=""
 314         if test -f $INT_O2IBPATH/Module.symvers; then
 315                 CHECK_SYMBOLS=$INT_O2IBPATH/Module.symvers
 316         elif test "x$SUSE_KERNEL" = "xyes"; then
 317                 CHECK_SYMBOLS=$(find ${INT_O2IBPATH}* -name Module.symvers)
 318                 # Select only the current 'flavor' if there is more than 1
 319                 NUM_AVAIL=$(find ${INT_O2IBPATH}* -name Module.symvers | wc -l)
 320                 if test ${NUM_AVAIL} -gt 1; then
 321                         PREFER=$(basename ${LINUX_OBJ})
 322                         for F in $(find ${O2IBPATH}-obj -name Module.symvers)
 323                         do
 324                                 maybe=$(echo $F | grep "/${PREFER}")
 325                                 if test "x$maybe" != "x"; then
 326                                         CHECK_SYMBOLS=$F
 327                                 fi
 328                         done
 329                 fi
 330         elif test -f $LINUX_OBJ/Module.symvers; then
 331                 # Debian symvers is in the arch tree
 332                 CHECK_SYMBOLS=$LINUX_OBJ/Module.symvers
 333         fi
 334
 335         if test -n "$CHECK_SYMBOLS"; then
 336                 if test ! "$CHECK_SYMBOLS" -ef "$LINUX_OBJ/Module.symvers"; then
 337                         AC_MSG_NOTICE([adding $CHECK_SYMBOLS to o2ib in-kernel symbols])
 338                         INT_O2IB_SYMBOLS="${CHECK_SYMBOLS}"
 339                 fi
 340         else
 341                 AC_MSG_WARN([Module.symvers for in-kernel o2iblnd was not found, in-kernel ofed will not be built])
 342                 BUILT_IN_KO2IBLND="no"
 343         fi
 344
 345         if test "x$EXTERNAL_KO2IBLND" = "xno" -a "x$BUILT_IN_KO2IBLND" = "xno" ; then
 346                 AC_MSG_ERROR([No o2iblnd can be built])
 347         elif test "x$ENABLE_MULTIPLE_LNDS" = "xno" -a \
 348                   "x$EXTERNAL_KO2IBLND" != "xno" -a "x$BUILT_IN_KO2IBLND" != "xno"; then
 349                 AC_MSG_WARN([
 350 NOTE: --enable-multiple-lnds is needed to enable both o2iblnd drivers.
 351 * Disabling in-kernel o2iblnd in favor of external o2iblnd driver.
 352 * There can be only one in this configuration
 353                             ])
 354                 BUILT_IN_KO2IBLND="no"
 355         fi
 356
 357         LB_CHECK_COMPILE([if Linux kernel has kthread_worker],
 358         linux_kthread_worker, [
 359                 #ifdef HAVE_OFED_COMPAT_RDMA
 360                 #undef PACKAGE_NAME
 361                 #undef PACKAGE_TARNAME
 362                 #undef PACKAGE_VERSION
 363                 #undef PACKAGE_STRING
 364                 #undef PACKAGE_BUGREPORT
 365                 #undef PACKAGE_URL
 366                 #include <linux/compat-2.6.h>
 367                 #endif
 368                 #include <linux/kthread.h>
 369         ],[
 370                 struct kthread_work *kth_wrk = NULL;
 371                 flush_kthread_work(kth_wrk);
 372         ],[
 373                 AC_DEFINE(HAVE_KTHREAD_WORK, 1, [kthread_worker found])
 374                 if test -z "$COMPAT_AUTOCONF"; then
 375                         EXTRA_OFED_INCLUDE="$EXTRA_OFED_INCLUDE -DCONFIG_COMPAT_IS_KTHREAD"
 376                 fi
 377         ])
 378         EXTRA_CHECK_INCLUDE=""
 379 ])
 380 AC_SUBST(EXTRA_OFED_CONFIG)
 381 AC_SUBST(EXTRA_OFED_INCLUDE)
 382 AC_SUBST(EXT_O2IBLND)
 383 AC_SUBST(EXT_O2IB_SYMBOLS)
 384 AC_SUBST(INT_O2IB_SYMBOLS)
 385
 386 # Passed down to deb packaging via autoMakefile.am
 387 AC_SUBST(EXT_O2IBPATH)
 388 AC_SUBST(ENABLEO2IB)
 389 AC_SUBST(ENABLE_MULTIPLE_LNDS)
 390
 391 AS_IF([test $ENABLEO2IB != "no"], [
 392         EXTRA_CHECK_INCLUDE="$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE"
 393         if test ! $EXT_O2IBPATH -ef $LINUX_OBJ; then
 394                 EXTERNAL_KO2IBLND="yes"
 395         fi
 396
 397         # In RHEL 6.2, rdma_create_id() takes the queue-pair type as a fourth argument
 398         AC_DEFUN([LN_SRC_O2IB_RDMA_CREATE_ID_4A], [
 399                 LB2_OFED_TEST_SRC([rdma_create_id_4args], [
 400                         #ifdef HAVE_OFED_COMPAT_RDMA
 401                         #undef PACKAGE_NAME
 402                         #undef PACKAGE_TARNAME
 403                         #undef PACKAGE_VERSION
 404                         #undef PACKAGE_STRING
 405                         #undef PACKAGE_BUGREPORT
 406                         #undef PACKAGE_URL
 407                         #include <linux/compat-2.6.h>
 408                         #endif
 409                         #include <rdma/rdma_cm.h>
 410                 ],[
 411                         rdma_create_id(NULL, NULL, 0, 0);
 412                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 413         ])
 414         AC_DEFUN([LN_O2IB_RDMA_CREATE_ID_4A], [
 415                 LB2_OFED_TEST_RESULTS(
 416                         ['rdma_create_id' wants four args],
 417                         [rdma_create_id_4args],
 418                         [HAVE_OFED_RDMA_CREATE_ID_4ARG])
 419         ])
 420
 421         # 4.4 added network namespace parameter for rdma_create_id()
 422         AC_DEFUN([LN_SRC_O2IB_RDMA_CREATE_ID_5A], [
 423                 LB2_OFED_TEST_SRC([rdma_create_id_5args], [
 424                         #ifdef HAVE_OFED_COMPAT_RDMA
 425                         #undef PACKAGE_NAME
 426                         #undef PACKAGE_TARNAME
 427                         #undef PACKAGE_VERSION
 428                         #undef PACKAGE_STRING
 429                         #undef PACKAGE_BUGREPORT
 430                         #undef PACKAGE_URL
 431                         #include <linux/compat-2.6.h>
 432                         #endif
 433                         #include <rdma/rdma_cm.h>
 434                 ],[
 435                         rdma_create_id(NULL, NULL, NULL, 0, 0);
 436                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 437         ])
 438         AC_DEFUN([LN_O2IB_RDMA_CREATE_ID_5A], [
 439                 LB2_OFED_TEST_RESULTS(
 440                         ['rdma_create_id' wants five args],
 441                         [rdma_create_id_5args],
 442                         [HAVE_OFED_RDMA_CREATE_ID_5ARG])
 443         ])
 444
 445         # 4.2 introduced struct ib_cq_init_attr which is used
 446         # by ib_create_cq(). Note some OFED stacks only keep
 447         # their headers in sync with latest kernels but not
 448         # the functionality which means for infiniband testing
 449         # we need to always test functionality testings.
 450         AC_DEFUN([LN_SRC_O2IB_IB_CQ_INIT_ATTR], [
 451                 LB2_OFED_TEST_SRC([ib_cq_init_attr], [
 452                         #ifdef HAVE_OFED_COMPAT_RDMA
 453                         #undef PACKAGE_NAME
 454                         #undef PACKAGE_TARNAME
 455                         #undef PACKAGE_VERSION
 456                         #undef PACKAGE_STRING
 457                         #undef PACKAGE_BUGREPORT
 458                         #undef PACKAGE_URL
 459                         #include <linux/compat-2.6.h>
 460                         #endif
 461                         #include <rdma/ib_verbs.h>
 462                 ],[
 463                         struct ib_cq_init_attr cq_attr;
 464
 465                         ib_create_cq(NULL, NULL, NULL, NULL, &cq_attr);
 466                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 467         ])
 468         AC_DEFUN([LN_O2IB_IB_CQ_INIT_ATTR], [
 469                 LB2_OFED_TEST_RESULTS(
 470                         ['struct ib_cq_init_attr' is used by ib_create_cq],
 471                         [ib_cq_init_attr],
 472                         [HAVE_OFED_IB_CQ_INIT_ATTR])
 473         ])
 474
 475         # 4.3 removed ib_alloc_fast_reg_mr()
 476         AC_DEFUN([LN_SRC_O2IB_IB_ALLOC_FAST_REG_MR], [
 477                 LB2_OFED_TEST_SRC([ib_alloc_fast_reg_mr], [
 478                         #ifdef HAVE_OFED_COMPAT_RDMA
 479                         #undef PACKAGE_NAME
 480                         #undef PACKAGE_TARNAME
 481                         #undef PACKAGE_VERSION
 482                         #undef PACKAGE_STRING
 483                         #undef PACKAGE_BUGREPORT
 484                         #undef PACKAGE_URL
 485                         #include <linux/compat-2.6.h>
 486                         #endif
 487                         #include <rdma/ib_verbs.h>
 488                 ],[
 489                         ib_alloc_fast_reg_mr(NULL, 0);
 490                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 491         ])
 492         AC_DEFUN([LN_O2IB_IB_ALLOC_FAST_REG_MR], [
 493                 LB2_OFED_TEST_RESULTS(
 494                         ['ib_alloc_fast_reg_mr' exists],
 495                         [ib_alloc_fast_reg_mr],
 496                         [HAVE_OFED_IB_ALLOC_FAST_REG_MR])
 497         ])
 498
 499         # 4.9 must stop using ib_get_dma_mr and the global MR
 500         # We then have to use FMR/Fastreg for all RDMA.
 501         AC_DEFUN([LN_SRC_O2IB_IB_GET_DMA_MR], [
 502                 LB2_OFED_TEST_SRC([ib_get_dma_mr], [
 503                         #ifdef HAVE_OFED_COMPAT_RDMA
 504                         #undef PACKAGE_NAME
 505                         #undef PACKAGE_TARNAME
 506                         #undef PACKAGE_VERSION
 507                         #undef PACKAGE_STRING
 508                         #undef PACKAGE_BUGREPORT
 509                         #undef PACKAGE_URL
 510                         #include <linux/compat-2.6.h>
 511                         #endif
 512                         #include <rdma/ib_verbs.h>
 513                 ],[
 514                         ib_get_dma_mr(NULL, 0);
 515                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 516         ])
 517         AC_DEFUN([LN_O2IB_IB_GET_DMA_MR], [
 518                 LB2_OFED_TEST_RESULTS(
 519                         ['ib_get_dma_mr' exists],
 520                         [ib_get_dma_mr],
 521                         [HAVE_OFED_IB_GET_DMA_MR])
 522         ])
 523
 524         # In v4.4 Linux kernel,
 525         # commit e622f2f4ad2142d2a613a57fb85f8cf737935ef5
 526         # split up struct ib_send_wr so that all non-trivial verbs
 527         # use their own structure which embedds struct ib_send_wr.
 528         AC_DEFUN([LN_SRC_O2IB_IB_RDMA_WR], [
 529                 LB2_OFED_TEST_SRC([ib_rdma_wr], [
 530                         #ifdef HAVE_OFED_COMPAT_RDMA
 531                         #undef PACKAGE_NAME
 532                         #undef PACKAGE_TARNAME
 533                         #undef PACKAGE_VERSION
 534                         #undef PACKAGE_STRING
 535                         #undef PACKAGE_BUGREPORT
 536                         #undef PACKAGE_URL
 537                         #include <linux/compat-2.6.h>
 538                         #endif
 539                         #include <rdma/ib_verbs.h>
 540                 ],[
 541                         const struct ib_rdma_wr *wr __attribute__ ((unused));
 542
 543                         wr = rdma_wr(NULL);
 544                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 545         ])
 546         AC_DEFUN([LN_O2IB_IB_RDMA_WR], [
 547                 LB2_OFED_TEST_RESULTS(
 548                         ['struct ib_rdma_wr' is defined],
 549                         [ib_rdma_wr],
 550                         [HAVE_OFED_IB_RDMA_WR])
 551         ])
 552
 553         # new fast registration API introduced in 4.4
 554         AC_DEFUN([LN_SRC_O2IB_IB_MAP_MR_SG_4A], [
 555                 LB2_OFED_TEST_SRC([ib_map_mr_sg_4args], [
 556                         #ifdef HAVE_OFED_COMPAT_RDMA
 557                         #undef PACKAGE_NAME
 558                         #undef PACKAGE_TARNAME
 559                         #undef PACKAGE_VERSION
 560                         #undef PACKAGE_STRING
 561                         #undef PACKAGE_BUGREPORT
 562                         #undef PACKAGE_URL
 563                         #include <linux/compat-2.6.h>
 564                         #endif
 565                         #include <rdma/ib_verbs.h>
 566                 ],[
 567                         ib_map_mr_sg(NULL, NULL, 0, 0);
 568                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 569         ])
 570         # new fast registration API introduced in 4.4
 571         AC_DEFUN([LN_O2IB_IB_MAP_MR_SG_4A], [
 572                 LB2_OFED_TEST_RESULTS(
 573                         ['ib_map_mr_sg' with 4 args exists],
 574                         [ib_map_mr_sg_4args],
 575                         [HAVE_OFED_IB_MAP_MR_SG])
 576         ])
 577
 578         # ib_map_mr_sg changes from 4 to 5 args (adding sg_offset_p)
 579         # in kernel 4.7 (and RHEL 7.3)
 580         AC_DEFUN([LN_SRC_O2IB_IB_MAP_MR_SG_5A], [
 581                 LB2_OFED_TEST_SRC([ib_map_mr_sg_5args], [
 582                         #ifdef HAVE_OFED_COMPAT_RDMA
 583                         #undef PACKAGE_NAME
 584                         #undef PACKAGE_TARNAME
 585                         #undef PACKAGE_VERSION
 586                         #undef PACKAGE_STRING
 587                         #undef PACKAGE_BUGREPORT
 588                         #undef PACKAGE_URL
 589                         #include <linux/compat-2.6.h>
 590                         #endif
 591                         #include <rdma/ib_verbs.h>
 592                 ],[
 593                         ib_map_mr_sg(NULL, NULL, 0, NULL, 0);
 594                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 595         ])
 596         AC_DEFUN([LN_O2IB_IB_MAP_MR_SG_5A], [
 597                 LB2_OFED_TEST_RESULTS(
 598                         [struct ib_reg_wr exists],
 599                         [ib_map_mr_sg_5args],
 600                         [HAVE_OFED_IB_MAP_MR_SG])
 601                 LB2_OFED_TEST_RESULTS(
 602                         ['ib_map_mr_sg()' with 5 args exists],
 603                         [ib_map_mr_sg_5args],
 604                         [HAVE_OFED_IB_MAP_MR_SG_5ARGS])
 605         ])
 606
 607         # ib_query_device() removed in 4.5
 608         AC_DEFUN([LN_SRC_O2IB_IB_DEVICE_ATTRS], [
 609                 LB2_OFED_TEST_SRC([ib_device_attrs], [
 610                         #ifdef HAVE_OFED_COMPAT_RDMA
 611                         #undef PACKAGE_NAME
 612                         #undef PACKAGE_TARNAME
 613                         #undef PACKAGE_VERSION
 614                         #undef PACKAGE_STRING
 615                         #undef PACKAGE_BUGREPORT
 616                         #undef PACKAGE_URL
 617                         #include <linux/compat-2.6.h>
 618                         #endif
 619                         #include <rdma/ib_verbs.h>
 620                 ],[
 621                         struct ib_device dev;
 622                         struct ib_device_attr dev_attr = {};
 623                         dev.attrs = dev_attr;
 624                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 625         ])
 626         AC_DEFUN([LN_O2IB_IB_DEVICE_ATTRS], [
 627                 LB2_OFED_TEST_RESULTS(
 628                         ['struct ib_device' has member 'attrs'],
 629                         [ib_device_attrs],
 630                         [HAVE_OFED_IB_DEVICE_ATTRS])
 631         ])
 632
 633         # A flags argument was added to ib_alloc_pd() in Linux 4.9,
 634         # commit ed082d36a7b2c27d1cda55fdfb28af18040c4a89
 635         AC_DEFUN([LN_SRC_O2IB_IB_ALLOC_PD], [
 636                 LB2_OFED_TEST_SRC([ib_alloc_pd], [
 637                         #ifdef HAVE_OFED_COMPAT_RDMA
 638                         #undef PACKAGE_NAME
 639                         #undef PACKAGE_TARNAME
 640                         #undef PACKAGE_VERSION
 641                         #undef PACKAGE_STRING
 642                         #undef PACKAGE_BUGREPORT
 643                         #undef PACKAGE_URL
 644                         #include <linux/compat-2.6.h>
 645                         #endif
 646                         #include <rdma/ib_verbs.h>
 647                 ],[
 648                         ib_alloc_pd(NULL, 0);
 649                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 650         ])
 651         AC_DEFUN([LN_O2IB_IB_ALLOC_PD], [
 652                 LB2_OFED_TEST_RESULTS(
 653                         [2arg 'ib_alloc_pd' exists],
 654                         [ib_alloc_pd],
 655                         [HAVE_OFED_IB_ALLOC_PD_2ARGS])
 656         ])
 657
 658         AC_DEFUN([LN_SRC_O2IB_IB_INC_RKEY], [
 659                 LB2_OFED_TEST_SRC([ib_inc_rkey], [
 660                         #ifdef HAVE_OFED_COMPAT_RDMA
 661                         #undef PACKAGE_NAME
 662                         #undef PACKAGE_TARNAME
 663                         #undef PACKAGE_VERSION
 664                         #undef PACKAGE_STRING
 665                         #undef PACKAGE_BUGREPORT
 666                         #undef PACKAGE_URL
 667                         #include <linux/compat-2.6.h>
 668                         #endif
 669                         #include <rdma/ib_verbs.h>
 670                 ],[
 671                         (void)ib_inc_rkey(0);
 672                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 673         ])
 674         AC_DEFUN([LN_O2IB_IB_INC_RKEY], [
 675                 LB2_OFED_TEST_RESULTS(
 676                         [function 'ib_inc_rkey' is defined],
 677                         [ib_inc_rkey],
 678                         [HAVE_OFED_IB_INC_RKEY])
 679         ])
 680
 681         # In MOFED 4.6, the second and third parameters for
 682         # ib_post_send() and ib_post_recv() are declared with
 683         # 'const'.
 684         AC_DEFUN([LN_SRC_O2IB_IB_POST_SEND_CONST], [
 685                 LB2_OFED_TEST_SRC([ib_post_send_recv_const], [
 686                         #ifdef HAVE_OFED_COMPAT_RDMA
 687                         #undef PACKAGE_NAME
 688                         #undef PACKAGE_TARNAME
 689                         #undef PACKAGE_VERSION
 690                         #undef PACKAGE_STRING
 691                         #undef PACKAGE_BUGREPORT
 692                         #undef PACKAGE_URL
 693                         #include <linux/compat-2.6.h>
 694                         #endif
 695                         #include <rdma/ib_verbs.h>
 696                 ],[
 697                         ib_post_send(NULL, (const struct ib_send_wr *)NULL,
 698                                      (const struct ib_send_wr **)NULL);
 699                 ],[-Werror],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 700         ])
 701         AC_DEFUN([LN_O2IB_IB_POST_SEND_CONST], [
 702                 LB2_OFED_TEST_RESULTS(
 703                         ['ib_post_send() and ib_post_recv()' have const parameters],
 704                         [ib_post_send_recv_const],
 705                         [HAVE_OFED_IB_POST_SEND_RECV_CONST])
 706         ])
 707
 708         # MOFED 5.5 fails with:
 709         #   ERROR: "ib_dma_virt_map_sg" [.../ko2iblnd.ko] undefined!
 710         # See if we have a broken ib_dma_map_sg()
 711         AC_DEFUN([LN_SRC_SANE_IB_DMA_MAP_SG], [
 712                 LB2_OFED_TEST_SRC([sane_ib_dma_map_sg], [
 713                         #ifdef HAVE_OFED_COMPAT_RDMA
 714                         #undef PACKAGE_NAME
 715                         #undef PACKAGE_TARNAME
 716                         #undef PACKAGE_VERSION
 717                         #undef PACKAGE_STRING
 718                         #undef PACKAGE_BUGREPORT
 719                         #undef PACKAGE_URL
 720                         #include <linux/compat-2.6.h>
 721                         #endif
 722                         #include <rdma/ib_verbs.h>
 723                 ],[
 724                         ib_dma_map_sg((struct ib_device *)NULL,
 725                                       (struct scatterlist *)NULL, 1, 0);
 726                 ],[-Werror],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 727         ])
 728         AC_DEFUN([LN_SANE_IB_DMA_MAP_SG], [
 729                 LB2_OFED_TEST_RESULTS(
 730                         [if ib_dma_map_sg() is sane],
 731                         [sane_ib_dma_map_sg],
 732                         [HAVE_OFED_IB_DMA_MAP_SG_SANE],[module])
 733         ])
 734
 735         #
 736         # LN_IB_DEVICE_OPS_EXISTS
 737         #
 738         # kernel 5.0 commit 521ed0d92ab0db3edd17a5f4716b7f698f4fce61
 739         # RDMA/core: Introduce ib_device_ops
 740         # ... introduces the ib_device_ops structure that defines all the
 741         # InfiniBand device operations in one place ...
 742         #
 743         AC_DEFUN([LN_SRC_O2IB_IB_DEVICE_OPS_EXISTS], [
 744                 LB2_OFED_TEST_SRC([ib_device_ops_test], [
 745                         #include <rdma/ib_verbs.h>
 746                 ],[
 747                         int x = offsetof(struct ib_device_ops, unmap_fmr);
 748                         x = x;
 749                         (void)x;
 750                 ],[-Werror],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 751         ])
 752         AC_DEFUN([LN_O2IB_IB_DEVICE_OPS_EXISTS], [
 753                 LB2_OFED_TEST_RESULTS(
 754                         [struct ib_device_ops is defined],
 755                         [ib_device_ops_test],
 756                         [HAVE_OFED_IB_DEVICE_OPS])
 757         ]) # LN_IB_DEVICE_OPS_EXISTS
 758
 759         #
 760         # LN_O2IB_IB_SG_DMA_ADDRESS_EXISTS
 761         #
 762         # kernel 5.1 commit a163afc88556e099271a7b423295bc5176fcecce
 763         # IB/core: Remove ib_sg_dma_address() and ib_sg_dma_len()
 764         # ... when dma_ops existed (3.6) ib_sg_dma_address() was not trivial ...
 765         #
 766         AC_DEFUN([LN_SRC_O2IB_IB_SG_DMA_ADDRESS_EXISTS], [
 767                 LB2_OFED_TEST_SRC([ib_sg_dma_address_test], [
 768                         #include <rdma/ib_verbs.h>
 769                 ],[
 770                         u64 x = ib_sg_dma_address(NULL, NULL);
 771                         x = x;
 772                         (void)x;
 773                 ],[-Werror],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 774         ])
 775         AC_DEFUN([LN_O2IB_IB_SG_DMA_ADDRESS_EXISTS], [
 776                 LB2_OFED_TEST_RESULTS(
 777                         [ib_sg_dma_address wrapper exists],
 778                         [ib_sg_dma_address_test],
 779                         [HAVE_OFED_IB_SG_DMA_ADDRESS])
 780         ]) # LN_O2IB_IB_SG_DMA_ADDRESS_EXISTS
 781
 782         #
 783         # LN_O2IB_RDMA_REJECT
 784         #
 785         # A reason argument was added to rdma_reject() in Linux 5.8,
 786         # commit 8094ba0ace7f6cd1e31ea8b151fba3594cadfa9a
 787         AC_DEFUN([LN_SRC_O2IB_RDMA_REJECT], [
 788                 LB2_OFED_TEST_SRC([rdma_reject], [
 789                         #ifdef HAVE_OFED_COMPAT_RDMA
 790                         #undef PACKAGE_NAME
 791                         #undef PACKAGE_TARNAME
 792                         #undef PACKAGE_VERSION
 793                         #undef PACKAGE_STRING
 794                         #undef PACKAGE_BUGREPORT
 795                         #undef PACKAGE_URL
 796                         #include <linux/compat-2.6.h>
 797                         #endif
 798                         #include <rdma/ib_verbs.h>
 799                         #include <rdma/ib_cm.h>
 800                         #include <rdma/rdma_cm.h>
 801                 ],[
 802                         rdma_reject(NULL, NULL, 0, 0);
 803                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 804         ])
 805         AC_DEFUN([LN_O2IB_RDMA_REJECT], [
 806                 LB2_OFED_TEST_RESULTS(
 807                         [4arg 'rdma_reject' exists],
 808                         [rdma_reject],
 809                         [HAVE_OFED_RDMA_REJECT_4ARGS])
 810         ]) # LN_O2IB_RDMA_REJECT
 811
 812         #
 813         # LN_O2IB_IB_FMR
 814         #
 815         # The FMR pool API was removed in Linux 5.8,
 816         # commit 4e373d5417ecbb4f438a8500f0379a2fc29c2643
 817         AC_DEFUN([LN_SRC_O2IB_IB_FMR], [
 818                 LB2_OFED_TEST_SRC([ib_fmr], [
 819                         #include <rdma/ib_verbs.h>
 820                 ],[
 821                         struct ib_fmr fmr = {};
 822                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 823         ])
 824         AC_DEFUN([LN_O2IB_IB_FMR], [
 825                 LB2_OFED_TEST_RESULTS(
 826                         [FMR pools API available],
 827                         [ib_fmr],
 828                         [HAVE_OFED_FMR_POOL_API])
 829         ]) # LN_O2IB_IB_FMR
 830
 831         #
 832         # LN_O2IB_RDMA_CONNECT_LOCKED
 833         #
 834         # rdma_connect_locked() was added in Linux 5.10,
 835         # commit 071ba4cc559de47160761b9500b72e8fa09d923d
 836         # and in MOFED-5.2-2. rdma_connect_locked() must
 837         # be called instead of rdma_connect() in
 838         # RDMA_CM_EVENT_ROUTE_RESOLVED handler.
 839         AC_DEFUN([LN_SRC_O2IB_RDMA_CONNECT_LOCKED], [
 840                 LB2_OFED_TEST_SRC([rdma_connect_locked], [
 841                         #include <rdma/rdma_cm.h>
 842                 ],[
 843                         rdma_connect_locked(NULL, NULL);
 844                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 845         ])
 846         AC_DEFUN([LN_O2IB_RDMA_CONNECT_LOCKED], [
 847                 LB2_OFED_TEST_RESULTS(
 848                         ['rdma_connect_locked' exists],
 849                         [rdma_connect_locked],
 850                         [HAVE_OFED_RDMA_CONNECT_LOCKED])
 851         ]) # LN_O2IB_RDMA_CONNECT_LOCKED
 852
 853         EXTRA_CHECK_INCLUDE=""
 854
 855         AC_DEFUN([LN_CONFIG_O2IB_SRC], [
 856                 LN_SRC_O2IB_RDMA_CREATE_ID_4A
 857                 LN_SRC_O2IB_RDMA_CREATE_ID_5A
 858                 LN_SRC_O2IB_IB_CQ_INIT_ATTR
 859                 LN_SRC_O2IB_IB_ALLOC_FAST_REG_MR
 860                 LN_SRC_O2IB_IB_GET_DMA_MR
 861                 LN_SRC_O2IB_IB_RDMA_WR
 862                 LN_SRC_O2IB_IB_MAP_MR_SG_4A
 863                 LN_SRC_O2IB_IB_MAP_MR_SG_5A
 864                 LN_SRC_O2IB_IB_DEVICE_ATTRS
 865                 LN_SRC_O2IB_IB_ALLOC_PD
 866                 LN_SRC_O2IB_IB_INC_RKEY
 867                 LN_SRC_O2IB_IB_POST_SEND_CONST
 868                 LN_SRC_SANE_IB_DMA_MAP_SG
 869                 LN_SRC_O2IB_IB_DEVICE_OPS_EXISTS
 870                 LN_SRC_O2IB_IB_SG_DMA_ADDRESS_EXISTS
 871                 LN_SRC_O2IB_RDMA_REJECT
 872                 LN_SRC_O2IB_IB_FMR
 873                 LN_SRC_O2IB_RDMA_CONNECT_LOCKED
 874         ])
 875         AC_DEFUN([LN_CONFIG_O2IB_RESULTS], [
 876                 LN_O2IB_RDMA_CREATE_ID_4A
 877                 LN_O2IB_RDMA_CREATE_ID_5A
 878                 LN_O2IB_IB_CQ_INIT_ATTR
 879                 LN_O2IB_IB_ALLOC_FAST_REG_MR
 880                 LN_O2IB_IB_GET_DMA_MR
 881                 LN_O2IB_IB_RDMA_WR
 882                 LN_O2IB_IB_MAP_MR_SG_4A
 883                 LN_O2IB_IB_MAP_MR_SG_5A
 884                 LN_O2IB_IB_DEVICE_ATTRS
 885                 LN_O2IB_IB_ALLOC_PD
 886                 LN_O2IB_IB_INC_RKEY
 887                 LN_O2IB_IB_POST_SEND_CONST
 888                 LN_SANE_IB_DMA_MAP_SG
 889                 LN_O2IB_IB_DEVICE_OPS_EXISTS
 890                 LN_O2IB_IB_SG_DMA_ADDRESS_EXISTS
 891                 LN_O2IB_RDMA_REJECT
 892                 LN_O2IB_IB_FMR
 893                 LN_O2IB_RDMA_CONNECT_LOCKED
 894         ])
 895 ]) # ENABLEO2IB != "no"
 896 ]) # LN_CONFIG_O2IB
 897
 898 #
 899 # LN_CONFIG_GNILND
 900 #
 901 # check whether to use the Gemini Network Interface lnd
 902 #
 903 AC_DEFUN([LN_CONFIG_GNILND], [
 904 AC_MSG_CHECKING([whether to enable GNI lnd])
 905 AC_ARG_ENABLE([gni],
 906         AS_HELP_STRING([--enable-gni],
 907                 [enable GNI lnd]),
 908         [], [enable_gni="no"])
 909 AC_MSG_RESULT([$enable_gni])
 910
 911 AS_IF([test "x$enable_gni" = xyes], [
 912         # GNICPPFLAGS was set in spec file
 913         EXTRA_KCFLAGS_save="$EXTRA_KCFLAGS"
 914         EXTRA_KCFLAGS="$EXTRA_KCFLAGS $GNICPPFLAGS"
 915         LB_CHECK_COMPILE([if GNI kernel headers are present],
 916         GNI_header, [
 917                 #include <linux/types.h>
 918                 #include <gni_pub.h>
 919         ],[
 920                 gni_cdm_handle_t kgni_domain;
 921                 gni_return_t     rc;
 922                 int              rrc;
 923                 rc = gni_cdm_create(0, 1, 1, 0, &kgni_domain);
 924                 rrc = (rc == GNI_RC_SUCCESS) ? 0 : 1;
 925                 return rrc;
 926         ],[
 927                 GNILND="gnilnd"
 928         ],[
 929                 AC_MSG_ERROR([cannot compile gnilnd with given GNICPPFLAGS: $GNICPPFLAGS])
 930         ])
 931         # at this point, we have gnilnd basic support,
 932         # now check for extra features
 933         LB_CHECK_COMPILE([to use RCA in gnilnd],
 934         RCA_gnilnd, [
 935                 #include <linux/types.h>
 936                 #include <gni_pub.h>
 937                 #include <krca_lib.h>
 938         ],[
 939                 gni_cdm_handle_t kgni_domain;
 940                 gni_return_t     rc;
 941                 krca_ticket_t    ticket = KRCA_NULL_TICKET;
 942                 int              rrc;
 943                 __u32            nid = 0, nic_addr;
 944                 rc = gni_cdm_create(0, 1, 1, 0, &kgni_domain);
 945                 rrc = (rc == GNI_RC_SUCCESS) ? 0 : 1;
 946                 rrc += krca_nid_to_nicaddrs(nid, 1, &nic_addr);
 947                 rrc += krca_register(&ticket, RCA_MAKE_SERVICE_INDEX(RCA_IO_CLASS, 9), 99, 0);
 948                 return rrc;
 949         ],[
 950                 GNICPPFLAGS="$GNICPPFLAGS -DGNILND_USE_RCA=1"
 951         ])
 952         EXTRA_KCFLAGS="$EXTRA_KCFLAGS_save"
 953
 954         AC_SUBST(ENABLE_GNI, yes)
 955 ], [
 956         AC_SUBST(ENABLE_GNI, no)
 957 ])
 958 AC_SUBST(GNICPPFLAGS)
 959 AC_SUBST(GNILND)
 960 ]) # LN_CONFIG_GNILND
 961
 962 #
 963 # LN_CONFIG_KFILND
 964 #
 965 # check whether to use the kfabric Network Interface lnd
 966 #
 967 AC_DEFUN([LN_CONFIG_KFILND], [
 968 AC_ARG_WITH([kfi],
 969         AS_HELP_STRING([--with-kfi=<path>], [Kfabric build path for kfilnd]),
 970         [
 971                 AC_CHECK_FILE([$with_kfi/Module.symvers],
 972                 [
 973                         # KFICPPFLAGS was set in spec file
 974                         KFICPPFLAGS="-I$with_kfi/include"
 975                         EXTRA_KCFLAGS_save="$EXTRA_KCFLAGS"
 976                         EXTRA_KCFLAGS="$EXTRA_KCFLAGS $KFICPPFLAGS"
 977                         KBUILD_EXTRA_SYMBOLS="$KBUILD_EXTRA_SYMBOLS $with_kfi/Module.symvers"
 978                         LB_CHECK_COMPILE([if kfabric headers are present], KFI_header,
 979                         [
 980                                 #include <kfi_endpoint.h>
 981                         ],[
 982                                 struct kfi_info *hints;
 983                                 hints = kfi_allocinfo();
 984                         ],[
 985                                 KFILND="kfilnd"
 986                                 AC_MSG_NOTICE([adding $with_kfi/Module.symvers to Symbol Path])
 987                                 EXTRA_SYMBOLS="$EXTRA_SYMBOLS $with_kfi/Module.symvers"
 988                         ],[
 989                                 AC_MSG_ERROR([cannot compile kfilnd with given KFICPPFLAGS: $KFICPPFLAGS])
 990                         ])
 991                 ],[
 992                         AC_MSG_ERROR(["$with_kfi/Module.symvers does not exist"])
 993                 ])
 994         ],[])
 995 AC_DEFINE(HAVE_KFILND, 1, [support kfabric LND])
 996 AC_SUBST(KFICPPFLAGS)
 997 AC_SUBST(KFILND)
 998 AC_SUBST(EXTRA_SYMBOLS)
 999 ]) # LN_CONFIG_KFILND
1000
1001 #
1002 # LN_CONFIG_SOCK_CREATE_KERN
1003 #
1004 # 4.x sock_create_kern() added a first parameter as 'struct net *'
1005 # instead of int.
1006 #
1007 AC_DEFUN([LN_SRC_CONFIG_SOCK_CREATE_KERN], [
1008         LB2_LINUX_TEST_SRC([sock_create_kern_net], [
1009                 #include <linux/net.h>
1010                 #include <net/net_namespace.h>
1011         ],[
1012                 sock_create_kern((struct net*)0, 0, 0, 0, NULL);
1013         ],[-Werror])
1014 ])
1015 AC_DEFUN([LN_CONFIG_SOCK_CREATE_KERN], [
1016         LB2_MSG_LINUX_TEST_RESULT([if 'sock_create_kern' first parameter is net],
1017         [sock_create_kern_net], [
1018                 AC_DEFINE(HAVE_SOCK_CREATE_KERN_USE_NET, 1,
1019                         [sock_create_kern use net as first parameter])
1020         ])
1021 ]) # LN_CONFIG_SOCK_CREATE_KERN
1022
1023 #
1024 # LN_CONFIG_SK_DATA_READY
1025 #
1026 # 3.15 for struct sock the *sk_data_ready() field only takes one argument now
1027 #
1028 AC_DEFUN([LN_SRC_CONFIG_SK_DATA_READY], [
1029         LB2_LINUX_TEST_SRC([sk_data_ready], [
1030                 #include <linux/net.h>
1031                 #include <net/sock.h>
1032         ],[
1033                 ((struct sock *)0)->sk_data_ready(NULL);
1034         ],[-Werror])
1035 ])
1036 AC_DEFUN([LN_CONFIG_SK_DATA_READY], [
1037         LB2_MSG_LINUX_TEST_RESULT([if 'sk_data_ready' takes only one argument],
1038         [sk_data_ready], [
1039         AC_DEFINE(HAVE_SK_DATA_READY_ONE_ARG, 1,
1040                 [sk_data_ready uses only one argument])
1041         ])
1042 ]) # LN_CONFIG_SK_DATA_READY
1043
1044 #
1045 # LN_ETHTOOL_LINK_SETTINGS
1046 #
1047 # ethtool_link_settings was added in Linux 4.6
1048 #
1049 AC_DEFUN([LN_SRC_ETHTOOL_LINK_SETTINGS], [
1050         LB2_LINUX_TEST_SRC([ethtool_link_settings], [
1051                 #include <linux/ethtool.h>
1052         ],[
1053                 struct ethtool_link_ksettings cmd;
1054         ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
1055 ])
1056 AC_DEFUN([LN_ETHTOOL_LINK_SETTINGS], [
1057         LB2_MSG_LINUX_TEST_RESULT([if 'ethtool_link_settings' exists],
1058         [ethtool_link_settings], [
1059                 AC_DEFINE(HAVE_ETHTOOL_LINK_SETTINGS, 1,
1060                         [ethtool_link_settings is defined])
1061         ])
1062 ]) # LN_ETHTOOL_LINK_SETTINGS
1063
1064 #
1065 # LN_HAVE_HYPERVISOR_IS_TYPE
1066 #
1067 # 4.14 commit 79cc74155218316b9a5d28577c7077b2adba8e58
1068 # x86/paravirt: Provide a way to check for hypervisors
1069 #
1070 AC_DEFUN([LN_SRC_HAVE_HYPERVISOR_IS_TYPE], [
1071         LB2_LINUX_TEST_SRC([hypervisor_is_type_exists], [
1072                 #include <asm/hypervisor.h>
1073         ],[
1074                 (void)hypervisor_is_type(X86_HYPER_NATIVE);
1075         ],[-Werror])
1076 ])
1077 AC_DEFUN([LN_HAVE_HYPERVISOR_IS_TYPE], [
1078         LB2_MSG_LINUX_TEST_RESULT([if hypervisor_is_type function is available],
1079         [hypervisor_is_type_exists], [
1080                 AC_DEFINE(HAVE_HYPERVISOR_IS_TYPE, 1,
1081                         [hypervisor_is_type function exists])
1082         ])
1083 ]) # LN_HAVE_HYPERVISOR_IS_TYPE
1084
1085 #
1086 # LN_HAVE_ORACLE_OFED_EXTENSIONS
1087 #
1088 # Oracle UEK 5
1089 #
1090 AC_DEFUN([LN_SRC_HAVE_ORACLE_OFED_EXTENSIONS], [
1091         LB2_LINUX_TEST_SRC([oracle_ofed_ext], [
1092                 #include <rdma/ib_fmr_pool.h>
1093         ],[
1094                 struct ib_fmr_pool_param param = {
1095                         .relaxed           = 0
1096                 };
1097                 (void)param;
1098         ])
1099 ])
1100 AC_DEFUN([LN_HAVE_ORACLE_OFED_EXTENSIONS], [
1101         LB2_MSG_LINUX_TEST_RESULT([if Oracle OFED Extensions are enabled],
1102         [oracle_ofed_ext], [
1103                 AC_DEFINE(HAVE_ORACLE_OFED_EXTENSIONS, 1,
1104                         [if Oracle OFED Extensions are enabled])
1105         ])
1106 ]) # LN_HAVE_ORACLE_OFED_EXTENSIONS
1107
1108 #
1109 # LN_CONFIG_SOCK_GETNAME
1110 #
1111 # 4.17 commit 9b2c45d479d0fb8647c9e83359df69162b5fbe5f getname()
1112 # does not take the length *int argument and returns the length
1113 #
1114 AC_DEFUN([LN_SRC_CONFIG_SOCK_GETNAME], [
1115         LB2_LINUX_TEST_SRC([kern_sock_getname_2args], [
1116                 #include <linux/net.h>
1117         ],[
1118                 kernel_getsockname(NULL, NULL);
1119         ],[-Werror])
1120 ])
1121 AC_DEFUN([LN_CONFIG_SOCK_GETNAME], [
1122         LB2_MSG_LINUX_TEST_RESULT([if 'getname' has two args],
1123         [kern_sock_getname_2args], [
1124                 AC_DEFINE(HAVE_KERN_SOCK_GETNAME_2ARGS, 1,
1125                         ['getname' has two args])
1126         ])
1127 ]) # LN_CONFIG_SOCK_GETNAME
1128
1129 #
1130 # LN_HAVE_IN_DEV_FOR_EACH_IFA_RTNL
1131 #
1132 # kernel 5.3 commit ef11db3310e272d3d8dbe8739e0770820dd20e52
1133 # and kernel 4.18.0-193.el8:
1134 # added in_dev_for_each_ifa_rtnl and in_dev_for_each_ifa_rcu
1135 # and removed for_ifa and endfor_ifa.
1136 # Use the _rntl variant as the current locking is rtnl.
1137 #
1138 AC_DEFUN([LN_SRC_HAVE_IN_DEV_FOR_EACH_IFA_RTNL], [
1139         LB2_LINUX_TEST_SRC([in_dev_for_each_ifa_rtnl_test], [
1140                 #include <linux/inetdevice.h>
1141         ],[
1142                 const struct in_ifaddr *ifa = NULL;
1143                 struct in_device *in_dev = NULL;
1144
1145                 in_dev_for_each_ifa_rtnl(ifa, in_dev) {}
1146         ],[-Werror])
1147 ])
1148 AC_DEFUN([LN_HAVE_IN_DEV_FOR_EACH_IFA_RTNL], [
1149         LB2_MSG_LINUX_TEST_RESULT([if 'in_dev_for_each_ifa_rtnl' is defined],
1150         [in_dev_for_each_ifa_rtnl_test], [
1151                 AC_DEFINE(HAVE_IN_DEV_FOR_EACH_IFA_RTNL, 1,
1152                         ['in_dev_for_each_ifa_rtnl' is defined])
1153         ])
1154 ]) # LN_HAVE_IN_DEV_FOR_EACH_IFA_RTNL
1155
1156 #
1157 # LN_USR_RDMA
1158 #
1159 #
1160 AC_DEFUN([LN_USR_RDMA], [
1161 AC_MSG_CHECKING([if RDMA_PS_TCP exists])
1162 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1163         #include <rdma/rdma_user_cm.h>
1164
1165         int main(void) {
1166                 int x = (int)RDMA_PS_TCP;
1167                 return x;
1168         }
1169 ])],[
1170         AC_DEFINE(HAVE_USRSPC_RDMA_PS_TCP, 1,
1171                 [RDMA_PS_TCP exists])
1172 ])
1173 ]) # LN_USR_RDMA
1174
1175 AC_DEFUN([LN_PROG_LINUX_SRC], [
1176         LN_CONFIG_O2IB_SRC
1177         # 3.15
1178         LN_SRC_CONFIG_SK_DATA_READY
1179         # 4.x
1180         LN_SRC_CONFIG_SOCK_CREATE_KERN
1181         # 4.6
1182         LN_SRC_ETHTOOL_LINK_SETTINGS
1183         # 4.14
1184         LN_SRC_HAVE_HYPERVISOR_IS_TYPE
1185         LN_SRC_HAVE_ORACLE_OFED_EXTENSIONS
1186         # 4.17
1187         LN_SRC_CONFIG_SOCK_GETNAME
1188         # 5.3 and 4.18.0-193.el8
1189         LN_SRC_HAVE_IN_DEV_FOR_EACH_IFA_RTNL
1190 ])
1191
1192 AC_DEFUN([LN_PROG_LINUX_RESULTS], [
1193         LN_CONFIG_O2IB_RESULTS
1194         # 3.15
1195         LN_CONFIG_SK_DATA_READY
1196         # 4.x
1197         LN_CONFIG_SOCK_CREATE_KERN
1198         # 4.6
1199         LN_ETHTOOL_LINK_SETTINGS
1200         # 4.14
1201         LN_HAVE_HYPERVISOR_IS_TYPE
1202         LN_HAVE_ORACLE_OFED_EXTENSIONS
1203         # 4.17
1204         LN_CONFIG_SOCK_GETNAME
1205         # 5.3 and 4.18.0-193.el8
1206         LN_HAVE_IN_DEV_FOR_EACH_IFA_RTNL
1207 ])
1208
1209 #
1210 # LN_PROG_LINUX
1211 #
1212 # LNet linux kernel checks
1213 #
1214 AC_DEFUN([LN_PROG_LINUX], [
1215 AC_MSG_NOTICE([LNet kernel checks
1216 ==============================================================================])
1217
1218 LN_CONFIG_BACKOFF
1219 LN_CONFIG_O2IB
1220 LN_CONFIG_GNILND
1221 LN_CONFIG_KFILND
1222 ]) # LN_PROG_LINUX
1223
1224 #
1225 # LN_PATH_DEFAULTS
1226 #
1227 # default paths for installed files
1228 #
1229 AC_DEFUN([LN_PATH_DEFAULTS], [
1230 ]) # LN_PATH_DEFAULTS
1231
1232 #
1233 # LN_CONFIGURE
1234 #
1235 # other configure checks
1236 #
1237 AC_DEFUN([LN_CONFIGURE], [
1238 AC_MSG_NOTICE([LNet core checks
1239 ==============================================================================])
1240
1241 AC_ARG_WITH([cuda],
1242         AS_HELP_STRING([--with-cuda=path],
1243                         [Path to the CUDA sources. Set to 'no' to disable.]),
1244                         [cudapath="$withval"],
1245                         [cudapath1=`ls -d1 /usr/src/nvidia-*/nvidia/ 2>/dev/null | tail -1`])
1246
1247 AC_ARG_WITH([gds],
1248         AS_HELP_STRING([--with-gds=path],
1249                         [Path to the GDS sources. Set to 'no' to disable.]),
1250                         [gdspath="$withval"],
1251                         [gdspath1=`ls -d1 /usr/src/nvidia-fs*/ 2>/dev/null | tail -1`])
1252
1253 AC_MSG_CHECKING([cuda source directory])
1254         AS_IF([test -z "${cudapath}"], [
1255                 AS_IF([test -e "${cudapath1}/nv-p2p.h"], [
1256                         cudapath=${cudapath1}
1257                 ], [
1258                         cudapath="[Not found]"
1259                 ])
1260         ])
1261 AC_MSG_RESULT([$cudapath])
1262
1263 AC_MSG_CHECKING([gds source directory])
1264         AS_IF([test -z "${gdspath}"], [
1265                 AS_IF([test -e "${gdspath1}/nvfs-dma.h"], [
1266                         gdspath=${gdspath1}
1267                 ], [
1268                         gdspath="[Not found]"
1269                 ])
1270         ])
1271 AC_MSG_RESULT([$gdspath])
1272
1273 AS_IF([test -e "${cudapath}" && test -e "${gdspath}"],[
1274         LB_CHECK_FILE([$cudapath/nv-p2p.h], [
1275                 AC_MSG_RESULT([CUDA path is $cudapath])
1276                 [CUDA_PATH=${cudapath}]
1277                 AC_SUBST(CUDA_PATH)
1278         ],[
1279                 AC_MSG_RESULT([CUDA sources not found: nv-p2p.h does not exist])
1280         ])
1281
1282         LB_CHECK_FILE([$gdspath/nvfs-dma.h], [
1283                 LB_CHECK_FILE([$gdspath/config-host.h], [
1284                         AC_MSG_RESULT([GDS path is ${gdspath}])
1285                         [GDS_PATH=${gdspath}]
1286                         AC_SUBST(GDS_PATH)
1287                         AC_DEFINE(WITH_GDS, 1, "GDS build enabled")
1288                 ], [
1289                     AC_MSG_RESULT([GDS sources not found: config-host.h does not exist])
1290         ])
1291         ], [
1292                 AC_MSG_RESULT([GDS sources not found: nvfs-dma.h does not exist])
1293     ])
1294 ],[
1295         AC_MSG_WARN([CUDA or GDS sources not found. GDS support disabled])
1296 ])
1297
1298 # lnet/utils/lnetconfig/liblnetconfig_netlink.c
1299 AS_IF([test "x$PKGCONF" = "x"],
1300         [AC_MSG_ERROR([pkg-config package is required to configure Lustre])])
1301
1302 AS_IF([test "x$enable_dist" = xno], [
1303         PKG_CHECK_MODULES(LIBNL3, [libnl-genl-3.0 >= 3.1])
1304 ])
1305
1306 AC_CHECK_LIB([nl-3], [nla_get_s32], [
1307         AC_DEFINE(HAVE_NLA_GET_S32, 1,
1308                 [libnl3 supports nla_get_s32])
1309         ], [
1310 ])
1311
1312 AC_CHECK_LIB([nl-3], [nla_get_s64], [
1313         AC_DEFINE(HAVE_NLA_GET_S64, 1,
1314                 [libnl3 supports nla_get_s64])
1315         ], [
1316 ])
1317
1318 #
1319 # LN_USR_NLMSGERR
1320 #
1321 AC_DEFUN([LN_USR_NLMSGERR], [
1322 AC_MSG_CHECKING([if 'enum nlmsgerr_attrs' exists])
1323 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1324         #include <linux/netlink.h>
1325
1326         int main(void) {
1327                 int x = (int)NLMSGERR_ATTR_MAX;
1328                 return x;
1329         }
1330 ])],[
1331         AC_DEFINE(HAVE_USRSPC_NLMSGERR, 1,
1332                 ['enum nlmsgerr_attrs' exists])
1333 ])
1334 ]) # LN_USR_NLMGSERR
1335
1336 # lnet/utils/portals.c
1337 AC_CHECK_HEADERS([netdb.h])
1338
1339 # lnet/utils/wirecheck.c
1340 AC_CHECK_FUNCS([strnlen])
1341
1342 # --------  Check for required packages  --------------
1343
1344 AC_MSG_CHECKING([whether to enable 'efence' debugging support])
1345 AC_ARG_ENABLE(efence,
1346         AS_HELP_STRING([--enable-efence],
1347                 [use efence library]),
1348         [], [enable_efence="no"])
1349 AC_MSG_RESULT([$enable_efence])
1350
1351 LIBEFENCE=""
1352 AS_IF([test "$enable_efence" = yes], [
1353         LIBEFENCE="-lefence"
1354         AC_DEFINE(HAVE_LIBEFENCE, 1,
1355                 [libefence support is requested])
1356         AC_SUBST(ENABLE_EFENCE, yes)
1357 ], [
1358         AC_SUBST(ENABLE_EFENCE, no)
1359 ])
1360 AC_SUBST(LIBEFENCE)
1361
1362 LN_CONFIG_DLC
1363 LN_USR_RDMA
1364 LN_USR_NLMSGERR
1365 ]) # LN_CONFIGURE
1366
1367 #
1368 # LN_CONDITIONALS
1369 #
1370 # AM_CONDITIONAL defines for lnet
1371 #
1372 AC_DEFUN([LN_CONDITIONALS], [
1373 AM_CONDITIONAL(EXTERNAL_KO2IBLND,  test x$EXTERNAL_KO2IBLND = "xyes")
1374 AM_CONDITIONAL(BUILT_IN_KO2IBLND,  test x$BUILT_IN_KO2IBLND = "xyes")
1375 AM_CONDITIONAL(BUILD_GNILND,       test x$GNILND  = "xgnilnd")
1376 AM_CONDITIONAL(BUILD_KFILND,       test x$KFILND  = "xkfilnd")
1377 ]) # LN_CONDITIONALS
1378
1379 #
1380 # LN_CONFIG_FILES
1381 #
1382 # files that should be generated with AC_OUTPUT
1383 #
1384 AC_DEFUN([LN_CONFIG_FILES], [
1385 AC_CONFIG_FILES([
1386 lnet/Makefile
1387 lnet/autoMakefile
1388 lnet/autoconf/Makefile
1389 lnet/doc/Makefile
1390 lnet/include/Makefile
1391 lnet/include/lnet/Makefile
1392 lnet/include/uapi/linux/lnet/Makefile
1393 lnet/klnds/Makefile
1394 lnet/klnds/autoMakefile
1395 lnet/klnds/o2iblnd/Makefile
1396 lnet/klnds/o2iblnd/autoMakefile
1397 lnet/klnds/in-kernel-o2iblnd/Makefile
1398 lnet/klnds/in-kernel-o2iblnd/autoMakefile
1399 lnet/klnds/gnilnd/Makefile
1400 lnet/klnds/gnilnd/autoMakefile
1401 lnet/klnds/socklnd/Makefile
1402 lnet/klnds/socklnd/autoMakefile
1403 lnet/klnds/kfilnd/Makefile
1404 lnet/klnds/kfilnd/autoMakefile
1405 lnet/lnet/Makefile
1406 lnet/lnet/autoMakefile
1407 lnet/selftest/Makefile
1408 lnet/selftest/autoMakefile
1409 lnet/utils/Makefile
1410 lnet/utils/lnetconfig/Makefile
1411 ])
1412 ]) # LN_CONFIG_FILES