lnet/autoconf/lustre-lnet.m4

   1 # LN_CONFIG_BACKOFF
   2 #
   3 # check if tunable tcp backoff is available/wanted
   4 #
   5 AC_DEFUN([LN_CONFIG_BACKOFF], [
   6 AC_MSG_CHECKING([whether to enable tunable backoff TCP support])
   7 AC_ARG_ENABLE([backoff],
   8         AS_HELP_STRING([--disable-backoff],
   9                 [disable socknal tunable backoff]),
  10         [], [enable_backoff="yes"])
  11 AC_MSG_RESULT([$enable_backoff])
  12 AS_IF([test "x$enable_backoff" = xyes], [
  13         AC_MSG_CHECKING([if Linux kernel has tunable backoff TCP support])
  14         AS_IF([grep -c TCP_BACKOFF $LINUX/include/linux/tcp.h >/dev/null], [
  15                 AC_MSG_RESULT([yes])
  16                 AC_DEFINE(SOCKNAL_BACKOFF, 1, [use tunable backoff TCP])
  17                 AS_IF([grep rto_max $LINUX/include/linux/tcp.h | grep -q __u16 >/dev/null],
  18                         [AC_DEFINE(SOCKNAL_BACKOFF_MS, 1,
  19                                 [tunable backoff TCP in ms])])
  20         ], [
  21                 AC_MSG_RESULT([no])
  22         ])
  23
  24         AC_SUBST(ENABLE_BACKOFF, yes)
  25 ], [
  26         AC_SUBST(ENABLE_BACKOFF, no)
  27
  28 ])
  29 ]) # LN_CONFIG_BACKOFF
  30
  31 #
  32 # LN_CONFIG_DLC
  33 #
  34 # Configure dlc
  35 #
  36 # fail to build if libyaml is not installed
  37 #
  38 AC_DEFUN([LN_CONFIG_DLC], [
  39         AS_IF([test "x$enable_dist" = xno], [
  40                 AC_CHECK_LIB([yaml], [yaml_parser_initialize],
  41                              [LIBYAML="libyaml"],
  42                              [AC_MSG_ERROR([YAML development libraries not not installed])],
  43                              [-lm])
  44         ])
  45 ]) # LN_CONFIG_DLC
  46
  47 #
  48 # LN_CONFIG_O2IB
  49 #
  50 # If current OFED installed (assume with "ofed_info") and devel
  51 # headers are not found, error because we assume OFED infiniband
  52 # driver needs to be used and we must configure/build with it.
  53 # Current OFED headers detection mechanism allow for non-standard
  54 # prefix but relies on "ofed_info" command and on "%prefix/openib"
  55 # link (both are ok for 1.5.x and 3.x versions), and should work
  56 # for both source and DKMS builds.
  57 #
  58 AC_DEFUN([LN_CONFIG_O2IB], [
  59 AC_MSG_CHECKING([whether to use Compat RDMA])
  60 AC_ARG_WITH([o2ib],
  61         AS_HELP_STRING([--with-o2ib=[yes|no|<path>]],
  62                 [build o2iblnd against path]),
  63         [], [with_o2ib="yes"])
  64
  65 case $with_o2ib in
  66         yes)    AS_IF([which ofed_info 2>/dev/null], [
  67                         AS_IF([test x$uses_dpkg = xyes], [
  68                                 LIST_ALL_PKG="dpkg -l | awk '{print \[$]2}'"
  69                                 LSPKG="dpkg --listfiles"
  70                         ], [
  71                                 LIST_ALL_PKG="rpm -qa"
  72                                 LSPKG="rpm -ql"
  73                         ])
  74
  75                         O2IBPKG="mlnx-ofed-kernel-dkms"
  76                         O2IBPKG+="|mlnx-ofed-kernel-modules"
  77                         O2IBPKG+="|mlnx-ofa_kernel-devel"
  78                         O2IBPKG+="|compat-rdma-devel"
  79                         O2IBPKG+="|kernel-ib-devel"
  80                         O2IBPKG+="|ofa_kernel-devel"
  81
  82                         O2IBDIR="/ofa_kernel"
  83                         O2IBDIR+="|/ofa_kernel/default"
  84                         O2IBDIR+="|/openib"
  85
  86                         O2IBDIR_PATH=$(eval $LIST_ALL_PKG |
  87                                        egrep -w "$O2IBPKG" | xargs $LSPKG |
  88                                        egrep "${O2IBDIR}$" | head -n1)
  89
  90                         if test -n "$O2IBDIR_PATH"; then
  91                                 O2IBPATHS=$(find $O2IBDIR_PATH -name rdma_cm.h |
  92                                         egrep "`uname -r`|default" |
  93                                         sed -e 's/\/include\/rdma\/rdma_cm.h//')
  94                         fi
  95
  96                         AS_IF([test -z "$O2IBPATHS"], [
  97                                 AC_MSG_ERROR([
  98 You seem to have an OFED installed but have not installed it's devel package.
  99 If you still want to build Lustre for your OFED I/B stack, you need to install its devel headers RPM.
 100 Instead, if you want to build Lustre for your kernel's built-in I/B stack rather than your installed OFED stack, either remove the OFED package(s) or use --with-o2ib=no.
 101                                              ])
 102                         ])
 103                         AS_IF([test $(echo $O2IBPATHS | wc -w) -ge 2], [
 104                                 AC_MSG_ERROR([
 105 It appears that you have multiple OFED versions installed.
 106 If you still want to build Lustre for your OFED I/B stack, you need to install a single version with its devel headers RPM.
 107 Instead, if you want to build Lustre for your in-kernel I/B stack rather than your installed external OFED stack, either remove the OFED package(s) or use --with-o2ib=no.
 108                                              ])
 109                         ])
 110                         if test -e $O2IBPATHS/${LINUXRELEASE}; then
 111                             O2IBPATHS=$O2IBPATHS/${LINUXRELEASE}
 112                         elif test -e $O2IBPATHS/default; then
 113                             O2IBPATHS=$O2IBPATHS/default
 114                         fi
 115                         OFED="yes"
 116                 ], [
 117                         O2IBPATHS="$LINUX $LINUX/drivers/infiniband"
 118                 ])
 119                 ENABLEO2IB="yes"
 120                 ;;
 121         no)     ENABLEO2IB="no"
 122                 ;;
 123         *)      O2IBPATHS=$with_o2ib
 124                 ENABLEO2IB="withpath"
 125                 OFED="yes"
 126                 ;;
 127 esac
 128
 129 AS_IF([test $ENABLEO2IB = "no"], [
 130         AC_MSG_RESULT([no])
 131         AC_DEFUN([LN_CONFIG_O2IB_SRC], [])
 132         AC_DEFUN([LN_CONFIG_O2IB_RESULTS], [])
 133 ], [
 134         o2ib_found=false
 135         for O2IBPATH in $O2IBPATHS; do
 136                 AS_IF([test \( -f ${O2IBPATH}/include/rdma/rdma_cm.h -a \
 137                            -f ${O2IBPATH}/include/rdma/ib_cm.h -a \
 138                            -f ${O2IBPATH}/include/rdma/ib_verbs.h \)], [
 139                         o2ib_found=true
 140                         break
 141                 ])
 142         done
 143         if ! $o2ib_found; then
 144                 AC_MSG_RESULT([no])
 145                 case $ENABLEO2IB in
 146                         "yes") AC_MSG_ERROR([no OFED nor kernel OpenIB gen2 headers present]) ;;
 147                         "withpath") AC_MSG_ERROR([bad --with-o2ib path]) ;;
 148                         *) AC_MSG_ERROR([internal error]) ;;
 149                 esac
 150         else
 151                 COMPAT_AUTOCONF=""
 152                 compatrdma_found=false
 153                 if test -f ${O2IBPATH}/include/linux/compat-2.6.h; then
 154                         AC_MSG_RESULT([yes])
 155                         compatrdma_found=true
 156                         AC_DEFINE(HAVE_COMPAT_RDMA, 1, [compat rdma found])
 157                         EXTRA_OFED_CONFIG="$EXTRA_OFED_CONFIG -include ${O2IBPATH}/include/linux/compat-2.6.h"
 158                         if test -f "$O2IBPATH/include/linux/compat_autoconf.h"; then
 159                                 COMPAT_AUTOCONF="$O2IBPATH/include/linux/compat_autoconf.h"
 160                         fi
 161                 else
 162                         AC_MSG_RESULT([no])
 163                 fi
 164                 if ! $compatrdma_found; then
 165                         if test -f "$O2IBPATH/config.mk"; then
 166                                 . "$O2IBPATH/config.mk"
 167                         elif test -f "$O2IBPATH/ofed_patch.mk"; then
 168                                 . "$O2IBPATH/ofed_patch.mk"
 169                         fi
 170                 elif test -z "$COMPAT_AUTOCONF"; then
 171                         # Depreciated checks
 172                         if test "x$RHEL_KERNEL" = xyes; then
 173                                 RHEL_MAJOR=$(awk '/ RHEL_MAJOR / { print [$]3 }' $LINUX_OBJ/include/$VERSION_HDIR/version.h)
 174                                 I=$(awk '/ RHEL_MINOR / { print [$]3 }' $LINUX_OBJ/include/$VERSION_HDIR/version.h)
 175                                 while test "$I" -ge 0; do
 176                                         EXTRA_OFED_INCLUDE="$EXTRA_OFED_INCLUDE -DCONFIG_COMPAT_RHEL_${RHEL_MAJOR}_$I"
 177                                         I=$(($I-1))
 178                                 done
 179                         elif test "x$SUSE_KERNEL" = xyes; then
 180                                 SP=$(grep PATCHLEVEL /etc/SuSE-release | sed -e 's/.*= *//')
 181                                 EXTRA_OFED_INCLUDE="$EXTRA_OFED_INCLUDE -DCONFIG_COMPAT_SLES_11_$SP"
 182                         fi
 183                 fi
 184
 185                 AC_MSG_CHECKING([whether to use any OFED backport headers])
 186                 if test -n "$BACKPORT_INCLUDES"; then
 187                         AC_MSG_RESULT([yes])
 188                         OFED_BACKPORT_PATH="$O2IBPATH/${BACKPORT_INCLUDES/*\/kernel_addons/kernel_addons}/"
 189                         EXTRA_OFED_INCLUDE="-I$OFED_BACKPORT_PATH $EXTRA_OFED_INCLUDE"
 190                 else
 191                         AC_MSG_RESULT([no])
 192                 fi
 193
 194                 O2IBLND=""
 195                 O2IBPATH=$(readlink --canonicalize $O2IBPATH)
 196                 EXTRA_OFED_INCLUDE="$EXTRA_OFED_INCLUDE -I$O2IBPATH/include -I$O2IBPATH/include/uapi"
 197                 EXTRA_CHECK_INCLUDE="$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE"
 198                 LB_CHECK_COMPILE([whether to enable OpenIB gen2 support],
 199                 openib_gen2_support, [
 200                         #ifdef HAVE_COMPAT_RDMA
 201                         #undef PACKAGE_NAME
 202                         #undef PACKAGE_TARNAME
 203                         #undef PACKAGE_VERSION
 204                         #undef PACKAGE_STRING
 205                         #undef PACKAGE_BUGREPORT
 206                         #undef PACKAGE_URL
 207                         #include <linux/compat-2.6.h>
 208                         #endif
 209                         #include <linux/version.h>
 210                         #include <linux/pci.h>
 211                         #include <linux/gfp.h>
 212                         #include <rdma/rdma_cm.h>
 213                         #include <rdma/ib_cm.h>
 214                         #include <rdma/ib_verbs.h>
 215                 ],[
 216                         struct rdma_cm_id      *cm_idi __attribute__ ((unused));
 217                         struct rdma_conn_param  conn_param __attribute__ ((unused));
 218                         struct ib_device_attr   device_attr __attribute__ ((unused));
 219                         struct ib_qp_attr       qp_attr __attribute__ ((unused));
 220                         enum   ib_cm_rej_reason rej_reason __attribute__ ((unused));
 221                         rdma_destroy_id(NULL);
 222                 ],[
 223                         O2IBLND="o2iblnd"
 224                 ],[
 225                         case $ENABLEO2IB in
 226                         "yes") AC_MSG_ERROR([can't compile with OpenIB gen2 headers]) ;;
 227                         "withpath") AC_MSG_ERROR([can't compile with OpenIB gen2 headers under $O2IBPATH]) ;;
 228                         *) AC_MSG_ERROR([internal error]) ;;
 229                         esac
 230                 ])
 231                 # we know at this point that the found OFED source is good
 232                 O2IB_SYMVER=""
 233                 if test -f $O2IBPATH/Module.symvers; then
 234                         O2IB_SYMVER=$O2IBPATH/Module.symvers
 235                 elif test "x$SUSE_KERNEL" = "xyes"; then
 236                         O2IB_SYMVER=$(find ${O2IBPATH}* -name Module.symvers)
 237                         # Select only the current 'flavor' if there is more than 1
 238                         NUM_AVAIL=$(find ${O2IBPATH}* -name Module.symvers | wc -l)
 239                         if test ${NUM_AVAIL} -gt 1; then
 240                                 PREFER=$(basename ${LINUX_OBJ})
 241                                 for F in $(find ${O2IBPATH}-obj -name Module.symvers)
 242                                 do
 243                                         maybe=$(echo $F | grep "/${PREFER}")
 244                                         if test "x$maybe" != "x"; then
 245                                                 O2IB_SYMVER=$F
 246                                         fi
 247                                 done
 248                         fi
 249                 elif test -f $LINUX_OBJ/Module.symvers; then
 250                         # Debian symvers is in the arch tree
 251                         O2IB_SYMVER=$LINUX_OBJ/Module.symvers
 252                 fi
 253                 if test -n "$O2IB_SYMVER"; then
 254                         if test ! "$O2IB_SYMVER" -ef "$LINUX_OBJ/Module.symvers"; then
 255                                 AC_MSG_NOTICE([adding $O2IB_SYMVER to Symbol Path O2IB])
 256                                 EXTRA_SYMBOLS="$EXTRA_SYMBOLS $O2IB_SYMVER"
 257                                 AC_SUBST(EXTRA_SYMBOLS)
 258                                 EXTRA_OFED_INCLUDE="${EXTRA_OFED_INCLUDE} -DMLNX_OFED_BUILD"
 259                         fi
 260                 else
 261                         AC_MSG_ERROR([an external source tree was, either specified or detected, for o2iblnd however I could not find a $O2IBPATH/Module.symvers there])
 262                 fi
 263
 264                 LB_CHECK_COMPILE([if Linux kernel has kthread_worker],
 265                 linux_kthread_worker, [
 266                         #ifdef HAVE_COMPAT_RDMA
 267                         #undef PACKAGE_NAME
 268                         #undef PACKAGE_TARNAME
 269                         #undef PACKAGE_VERSION
 270                         #undef PACKAGE_STRING
 271                         #undef PACKAGE_BUGREPORT
 272                         #undef PACKAGE_URL
 273                         #include <linux/compat-2.6.h>
 274                         #endif
 275                         #include <linux/kthread.h>
 276                 ],[
 277                         struct kthread_work *kth_wrk = NULL;
 278                         flush_kthread_work(kth_wrk);
 279                 ],[
 280                         AC_DEFINE(HAVE_KTHREAD_WORK, 1, [kthread_worker found])
 281                         if test -z "$COMPAT_AUTOCONF"; then
 282                                 EXTRA_OFED_INCLUDE="$EXTRA_OFED_INCLUDE -DCONFIG_COMPAT_IS_KTHREAD"
 283                         fi
 284                 ])
 285                 EXTRA_CHECK_INCLUDE=""
 286         fi
 287 ])
 288 AC_SUBST(EXTRA_OFED_CONFIG)
 289 AC_SUBST(EXTRA_OFED_INCLUDE)
 290 AC_SUBST(O2IBLND)
 291 AC_SUBST(O2IBPATH)
 292 AC_SUBST(ENABLEO2IB)
 293
 294 AS_IF([test $ENABLEO2IB != "no"], [
 295         EXTRA_CHECK_INCLUDE="$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE"
 296         if test ! $O2IBPATH -ef $LINUX_OBJ; then
 297                 KBUILD_EXTRA_SYMBOLS="$KBUILD_EXTRA_SYMBOLS $O2IBPATH/Module.symvers"
 298         fi
 299
 300         # In RHEL 6.2, rdma_create_id() takes the queue-pair type as a fourth argument
 301         AC_DEFUN([LN_SRC_O2IB_RDMA_CREATE_ID_4A], [
 302                 LB2_LINUX_TEST_SRC([rdma_create_id_4args], [
 303                         #ifdef HAVE_COMPAT_RDMA
 304                         #undef PACKAGE_NAME
 305                         #undef PACKAGE_TARNAME
 306                         #undef PACKAGE_VERSION
 307                         #undef PACKAGE_STRING
 308                         #undef PACKAGE_BUGREPORT
 309                         #undef PACKAGE_URL
 310                         #include <linux/compat-2.6.h>
 311                         #endif
 312                         #include <rdma/rdma_cm.h>
 313                 ],[
 314                         rdma_create_id(NULL, NULL, 0, 0);
 315                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 316         ])
 317         AC_DEFUN([LN_O2IB_RDMA_CREATE_ID_4A], [
 318                 LB2_MSG_LINUX_TEST_RESULT([if 'rdma_create_id' wants four args],
 319                 [rdma_create_id_4args], [
 320                         AC_DEFINE(HAVE_RDMA_CREATE_ID_4ARG, 1,
 321                                 [rdma_create_id wants 4 args])
 322                 ])
 323         ])
 324
 325         # 4.4 added network namespace parameter for rdma_create_id()
 326         AC_DEFUN([LN_SRC_O2IB_RDMA_CREATE_ID_5A], [
 327                 LB2_LINUX_TEST_SRC([rdma_create_id_5args], [
 328                         #ifdef HAVE_COMPAT_RDMA
 329                         #undef PACKAGE_NAME
 330                         #undef PACKAGE_TARNAME
 331                         #undef PACKAGE_VERSION
 332                         #undef PACKAGE_STRING
 333                         #undef PACKAGE_BUGREPORT
 334                         #undef PACKAGE_URL
 335                         #include <linux/compat-2.6.h>
 336                         #endif
 337                         #include <rdma/rdma_cm.h>
 338                 ],[
 339                         rdma_create_id(NULL, NULL, NULL, 0, 0);
 340                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 341         ])
 342         AC_DEFUN([LN_O2IB_RDMA_CREATE_ID_5A], [
 343                 LB2_MSG_LINUX_TEST_RESULT([if 'rdma_create_id' wants five args],
 344                 [rdma_create_id_5args], [
 345                         AC_DEFINE(HAVE_RDMA_CREATE_ID_5ARG, 1,
 346                                 [rdma_create_id wants 5 args])
 347                 ])
 348         ])
 349
 350         # 4.2 introduced struct ib_cq_init_attr which is used
 351         # by ib_create_cq(). Note some OFED stacks only keep
 352         # their headers in sync with latest kernels but not
 353         # the functionality which means for infiniband testing
 354         # we need to always test functionality testings.
 355         AC_DEFUN([LN_SRC_O2IB_IB_CQ_INIT_ATTR], [
 356                 LB2_LINUX_TEST_SRC([ib_cq_init_attr], [
 357                         #ifdef HAVE_COMPAT_RDMA
 358                         #undef PACKAGE_NAME
 359                         #undef PACKAGE_TARNAME
 360                         #undef PACKAGE_VERSION
 361                         #undef PACKAGE_STRING
 362                         #undef PACKAGE_BUGREPORT
 363                         #undef PACKAGE_URL
 364                         #include <linux/compat-2.6.h>
 365                         #endif
 366                         #include <rdma/ib_verbs.h>
 367                 ],[
 368                         struct ib_cq_init_attr cq_attr;
 369
 370                         ib_create_cq(NULL, NULL, NULL, NULL, &cq_attr);
 371                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 372         ])
 373         AC_DEFUN([LN_O2IB_IB_CQ_INIT_ATTR], [
 374                 LB2_MSG_LINUX_TEST_RESULT([if 'struct ib_cq_init_attr' is used],
 375                 [ib_cq_init_attr], [
 376                         AC_DEFINE(HAVE_IB_CQ_INIT_ATTR, 1,
 377                                 [struct ib_cq_init_attr is used by ib_create_cq])
 378                 ])
 379         ])
 380
 381         # 4.3 removed ib_alloc_fast_reg_mr()
 382         AC_DEFUN([LN_SRC_O2IB_IB_ALLOC_FAST_REG_MR], [
 383                 LB2_LINUX_TEST_SRC([ib_alloc_fast_reg_mr], [
 384                         #ifdef HAVE_COMPAT_RDMA
 385                         #undef PACKAGE_NAME
 386                         #undef PACKAGE_TARNAME
 387                         #undef PACKAGE_VERSION
 388                         #undef PACKAGE_STRING
 389                         #undef PACKAGE_BUGREPORT
 390                         #undef PACKAGE_URL
 391                         #include <linux/compat-2.6.h>
 392                         #endif
 393                         #include <rdma/ib_verbs.h>
 394                 ],[
 395                         ib_alloc_fast_reg_mr(NULL, 0);
 396                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 397         ])
 398         AC_DEFUN([LN_O2IB_IB_ALLOC_FAST_REG_MR], [
 399                 LB2_MSG_LINUX_TEST_RESULT([if 'ib_alloc_fast_reg_mr' exists],
 400                 [ib_alloc_fast_reg_mr], [
 401                         AC_DEFINE(HAVE_IB_ALLOC_FAST_REG_MR, 1,
 402                                 [ib_alloc_fast_reg_mr is defined])
 403                 ])
 404         ])
 405
 406         # 4.9 must stop using ib_get_dma_mr and the global MR
 407         # We then have to use FMR/Fastreg for all RDMA.
 408         AC_DEFUN([LN_SRC_O2IB_IB_GET_DMA_MR], [
 409                 LB2_LINUX_TEST_SRC([ib_get_dma_mr], [
 410                         #ifdef HAVE_COMPAT_RDMA
 411                         #undef PACKAGE_NAME
 412                         #undef PACKAGE_TARNAME
 413                         #undef PACKAGE_VERSION
 414                         #undef PACKAGE_STRING
 415                         #undef PACKAGE_BUGREPORT
 416                         #undef PACKAGE_URL
 417                         #include <linux/compat-2.6.h>
 418                         #endif
 419                         #include <rdma/ib_verbs.h>
 420                 ],[
 421                         ib_get_dma_mr(NULL, 0);
 422                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 423         ])
 424         AC_DEFUN([LN_O2IB_IB_GET_DMA_MR], [
 425                 LB2_MSG_LINUX_TEST_RESULT([if 'ib_get_dma_mr' exists],
 426                 [ib_get_dma_mr], [
 427                         AC_DEFINE(HAVE_IB_GET_DMA_MR, 1,
 428                                 [ib_get_dma_mr is defined])
 429                 ])
 430         ])
 431
 432         # In v4.4 Linux kernel,
 433         # commit e622f2f4ad2142d2a613a57fb85f8cf737935ef5
 434         # split up struct ib_send_wr so that all non-trivial verbs
 435         # use their own structure which embedds struct ib_send_wr.
 436         AC_DEFUN([LN_SRC_O2IB_IB_RDMA_WR], [
 437                 LB2_LINUX_TEST_SRC([ib_rdma_wr], [
 438                         #ifdef HAVE_COMPAT_RDMA
 439                         #undef PACKAGE_NAME
 440                         #undef PACKAGE_TARNAME
 441                         #undef PACKAGE_VERSION
 442                         #undef PACKAGE_STRING
 443                         #undef PACKAGE_BUGREPORT
 444                         #undef PACKAGE_URL
 445                         #include <linux/compat-2.6.h>
 446                         #endif
 447                         #include <rdma/ib_verbs.h>
 448                 ],[
 449                         const struct ib_rdma_wr *wr __attribute__ ((unused));
 450
 451                         wr = rdma_wr(NULL);
 452                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 453         ])
 454         AC_DEFUN([LN_O2IB_IB_RDMA_WR], [
 455                 LB2_MSG_LINUX_TEST_RESULT([if 'struct ib_rdma_wr' is defined],
 456                 [ib_rdma_wr], [
 457                         AC_DEFINE(HAVE_IB_RDMA_WR, 1,
 458                                 [struct ib_rdma_wr is defined])
 459                 ])
 460         ])
 461
 462         # new fast registration API introduced in 4.4
 463         AC_DEFUN([LN_SRC_O2IB_IB_MAP_MR_SG_4A], [
 464                 LB2_LINUX_TEST_SRC([ib_map_mr_sg_4args], [
 465                         #ifdef HAVE_COMPAT_RDMA
 466                         #undef PACKAGE_NAME
 467                         #undef PACKAGE_TARNAME
 468                         #undef PACKAGE_VERSION
 469                         #undef PACKAGE_STRING
 470                         #undef PACKAGE_BUGREPORT
 471                         #undef PACKAGE_URL
 472                         #include <linux/compat-2.6.h>
 473                         #endif
 474                         #include <rdma/ib_verbs.h>
 475                 ],[
 476                         ib_map_mr_sg(NULL, NULL, 0, 0);
 477                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 478         ])
 479         # new fast registration API introduced in 4.4
 480         AC_DEFUN([LN_O2IB_IB_MAP_MR_SG_4A], [
 481                 LB2_MSG_LINUX_TEST_RESULT([if 4arg 'ib_map_mr_sg' exists],
 482                 [ib_map_mr_sg_4args], [
 483                         AC_DEFINE(HAVE_IB_MAP_MR_SG, 1,
 484                                 [ib_map_mr_sg exists])
 485                 ])
 486         ])
 487
 488         # ib_map_mr_sg changes from 4 to 5 args (adding sg_offset_p)
 489         # in kernel 4.7 (and RHEL 7.3)
 490         AC_DEFUN([LN_SRC_O2IB_IB_MAP_MR_SG_5A], [
 491                 LB2_LINUX_TEST_SRC([ib_map_mr_sg_5args], [
 492                         #ifdef HAVE_COMPAT_RDMA
 493                         #undef PACKAGE_NAME
 494                         #undef PACKAGE_TARNAME
 495                         #undef PACKAGE_VERSION
 496                         #undef PACKAGE_STRING
 497                         #undef PACKAGE_BUGREPORT
 498                         #undef PACKAGE_URL
 499                         #include <linux/compat-2.6.h>
 500                         #endif
 501                         #include <rdma/ib_verbs.h>
 502                 ],[
 503                         ib_map_mr_sg(NULL, NULL, 0, NULL, 0);
 504                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 505         ])
 506         AC_DEFUN([LN_O2IB_IB_MAP_MR_SG_5A], [
 507                 LB2_MSG_LINUX_TEST_RESULT([if 5arg 'ib_map_mr_sg' exists],
 508                 [ib_map_mr_sg_5args], [
 509                         AC_DEFINE(HAVE_IB_MAP_MR_SG, 1,
 510                                 [ib_map_mr_sg exists])
 511                         AC_DEFINE(HAVE_IB_MAP_MR_SG_5ARGS, 1,
 512                                 [ib_map_mr_sg has 5 arguments])
 513                 ])
 514         ])
 515
 516         # ib_query_device() removed in 4.5
 517         AC_DEFUN([LN_SRC_O2IB_IB_DEVICE_ATTRS], [
 518                 LB2_LINUX_TEST_SRC([ib_device_attrs], [
 519                         #ifdef HAVE_COMPAT_RDMA
 520                         #undef PACKAGE_NAME
 521                         #undef PACKAGE_TARNAME
 522                         #undef PACKAGE_VERSION
 523                         #undef PACKAGE_STRING
 524                         #undef PACKAGE_BUGREPORT
 525                         #undef PACKAGE_URL
 526                         #include <linux/compat-2.6.h>
 527                         #endif
 528                         #include <rdma/ib_verbs.h>
 529                 ],[
 530                         struct ib_device dev;
 531                         struct ib_device_attr dev_attr = {};
 532                         dev.attrs = dev_attr;
 533                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 534         ])
 535         AC_DEFUN([LN_O2IB_IB_DEVICE_ATTRS], [
 536                 LB2_MSG_LINUX_TEST_RESULT([if 'struct ib_device' has member 'attrs'],
 537                 [ib_device_attrs], [
 538                         AC_DEFINE(HAVE_IB_DEVICE_ATTRS, 1,
 539                                 [struct ib_device.attrs is defined])
 540                 ])
 541         ])
 542
 543         # A flags argument was added to ib_alloc_pd() in Linux 4.9,
 544         # commit ed082d36a7b2c27d1cda55fdfb28af18040c4a89
 545         AC_DEFUN([LN_SRC_O2IB_IB_ALLOC_PD], [
 546                 LB2_LINUX_TEST_SRC([ib_alloc_pd], [
 547                         #ifdef HAVE_COMPAT_RDMA
 548                         #undef PACKAGE_NAME
 549                         #undef PACKAGE_TARNAME
 550                         #undef PACKAGE_VERSION
 551                         #undef PACKAGE_STRING
 552                         #undef PACKAGE_BUGREPORT
 553                         #undef PACKAGE_URL
 554                         #include <linux/compat-2.6.h>
 555                         #endif
 556                         #include <rdma/ib_verbs.h>
 557                 ],[
 558                         ib_alloc_pd(NULL, 0);
 559                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 560         ])
 561         AC_DEFUN([LN_O2IB_IB_ALLOC_PD], [
 562                 LB2_MSG_LINUX_TEST_RESULT([if 2arg 'ib_alloc_pd' exists],
 563                 [ib_alloc_pd], [
 564                         AC_DEFINE(HAVE_IB_ALLOC_PD_2ARGS, 1,
 565                                 [ib_alloc_pd has 2 arguments])
 566                 ])
 567         ])
 568
 569         AC_DEFUN([LN_SRC_O2IB_IB_INC_RKEY], [
 570                 LB2_LINUX_TEST_SRC([ib_inc_rkey], [
 571                         #ifdef HAVE_COMPAT_RDMA
 572                         #undef PACKAGE_NAME
 573                         #undef PACKAGE_TARNAME
 574                         #undef PACKAGE_VERSION
 575                         #undef PACKAGE_STRING
 576                         #undef PACKAGE_BUGREPORT
 577                         #undef PACKAGE_URL
 578                         #include <linux/compat-2.6.h>
 579                         #endif
 580                         #include <rdma/ib_verbs.h>
 581                 ],[
 582                         (void)ib_inc_rkey(0);
 583                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 584         ])
 585         AC_DEFUN([LN_O2IB_IB_INC_RKEY], [
 586                 LB2_MSG_LINUX_TEST_RESULT([if function 'ib_inc_rkey' is defined],
 587                 [ib_inc_rkey], [
 588                         AC_DEFINE(HAVE_IB_INC_RKEY, 1,
 589                                   [function ib_inc_rkey exist])
 590                 ])
 591         ])
 592
 593         # In MOFED 4.6, the second and third parameters for
 594         # ib_post_send() and ib_post_recv() are declared with
 595         # 'const'.
 596         AC_DEFUN([LN_SRC_O2IB_IB_POST_SEND_CONST], [
 597                 LB2_LINUX_TEST_SRC([ib_post_send_recv_const], [
 598                         #ifdef HAVE_COMPAT_RDMA
 599                         #undef PACKAGE_NAME
 600                         #undef PACKAGE_TARNAME
 601                         #undef PACKAGE_VERSION
 602                         #undef PACKAGE_STRING
 603                         #undef PACKAGE_BUGREPORT
 604                         #undef PACKAGE_URL
 605                         #include <linux/compat-2.6.h>
 606                         #endif
 607                         #include <rdma/ib_verbs.h>
 608                 ],[
 609                         ib_post_send(NULL, (const struct ib_send_wr *)NULL,
 610                                      (const struct ib_send_wr **)NULL);
 611                 ],[-Werror],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 612         ])
 613         AC_DEFUN([LN_O2IB_IB_POST_SEND_CONST], [
 614                 LB2_MSG_LINUX_TEST_RESULT([if 'ib_post_send() and ib_post_recv()' have const parameters],
 615                 [ib_post_send_recv_const], [
 616                         AC_DEFINE(HAVE_IB_POST_SEND_RECV_CONST, 1,
 617                                 [ib_post_send and ib_post_recv have const parameters])
 618                 ])
 619         ])
 620
 621         # MOFED 5.5 fails with:
 622         #   ERROR: "ib_dma_virt_map_sg" [.../ko2iblnd.ko] undefined!
 623         # See if we have a broken ib_dma_map_sg()
 624         AC_DEFUN([LN_SRC_SANE_IB_DMA_MAP_SG], [
 625                 LB2_LINUX_TEST_SRC([sane_ib_dma_map_sg], [
 626                         #ifdef HAVE_COMPAT_RDMA
 627                         #undef PACKAGE_NAME
 628                         #undef PACKAGE_TARNAME
 629                         #undef PACKAGE_VERSION
 630                         #undef PACKAGE_STRING
 631                         #undef PACKAGE_BUGREPORT
 632                         #undef PACKAGE_URL
 633                         #include <linux/compat-2.6.h>
 634                         #endif
 635                         #include <rdma/ib_verbs.h>
 636                 ],[
 637                         ib_dma_map_sg((struct ib_device *)NULL,
 638                                       (struct scatterlist *)NULL, 1, 0);
 639                 ],[-Werror],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 640         ])
 641         AC_DEFUN([LN_SANE_IB_DMA_MAP_SG], [
 642                 LB2_MSG_LINUX_TEST_RESULT([if ib_dma_map_sg() is sane],
 643                 [sane_ib_dma_map_sg], [
 644                         AC_DEFINE(HAVE_SANE_IB_DMA_MAP_SG, 1,
 645                                 [ib_dma_map_sg is sane])
 646                 ],[],[module])
 647         ])
 648
 649         #
 650         # LN_IB_DEVICE_OPS_EXISTS
 651         #
 652         # kernel 5.0 commit 521ed0d92ab0db3edd17a5f4716b7f698f4fce61
 653         # RDMA/core: Introduce ib_device_ops
 654         # ... introduces the ib_device_ops structure that defines all the
 655         # InfiniBand device operations in one place ...
 656         #
 657         AC_DEFUN([LN_SRC_O2IB_IB_DEVICE_OPS_EXISTS], [
 658                 LB2_LINUX_TEST_SRC([ib_device_ops_test], [
 659                         #include <rdma/ib_verbs.h>
 660                 ],[
 661                         int x = offsetof(struct ib_device_ops, unmap_fmr);
 662                         x = x;
 663                         (void)x;
 664                 ],[-Werror],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 665         ])
 666         AC_DEFUN([LN_O2IB_IB_DEVICE_OPS_EXISTS], [
 667                 LB2_MSG_LINUX_TEST_RESULT([if struct ib_device_ops is defined],
 668                 [ib_device_ops_test], [
 669                         AC_DEFINE(HAVE_IB_DEVICE_OPS, 1,
 670                                 [if struct ib_device_ops is defined])
 671                 ])
 672         ]) # LN_IB_DEVICE_OPS_EXISTS
 673
 674         #
 675         # LN_O2IB_IB_SG_DMA_ADDRESS_EXISTS
 676         #
 677         # kernel 5.1 commit a163afc88556e099271a7b423295bc5176fcecce
 678         # IB/core: Remove ib_sg_dma_address() and ib_sg_dma_len()
 679         # ... when dma_ops existed (3.6) ib_sg_dma_address() was not trivial ...
 680         #
 681         AC_DEFUN([LN_SRC_O2IB_IB_SG_DMA_ADDRESS_EXISTS], [
 682                 LB2_LINUX_TEST_SRC([ib_sg_dma_address_test], [
 683                         #include <rdma/ib_verbs.h>
 684                 ],[
 685                         u64 x = ib_sg_dma_address(NULL, NULL);
 686                         x = x;
 687                         (void)x;
 688                 ],[-Werror],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 689         ])
 690         AC_DEFUN([LN_O2IB_IB_SG_DMA_ADDRESS_EXISTS], [
 691                 LB2_MSG_LINUX_TEST_RESULT([if ib_sg_dma_address wrapper exists],
 692                 [ib_sg_dma_address_test], [
 693                         AC_DEFINE(HAVE_IB_SG_DMA_ADDRESS, 1,
 694                                 [if ib_sg_dma_address wrapper exists])
 695                 ])
 696         ]) # LN_O2IB_IB_SG_DMA_ADDRESS_EXISTS
 697
 698         #
 699         # LN_O2IB_RDMA_REJECT
 700         #
 701         # A reason argument was added to rdma_reject() in Linux 5.8,
 702         # commit 8094ba0ace7f6cd1e31ea8b151fba3594cadfa9a
 703         AC_DEFUN([LN_SRC_O2IB_RDMA_REJECT], [
 704                 LB2_LINUX_TEST_SRC([rdma_reject], [
 705                         #ifdef HAVE_COMPAT_RDMA
 706                         #undef PACKAGE_NAME
 707                         #undef PACKAGE_TARNAME
 708                         #undef PACKAGE_VERSION
 709                         #undef PACKAGE_STRING
 710                         #undef PACKAGE_BUGREPORT
 711                         #undef PACKAGE_URL
 712                         #include <linux/compat-2.6.h>
 713                         #endif
 714                         #include <rdma/ib_verbs.h>
 715                         #include <rdma/ib_cm.h>
 716                         #include <rdma/rdma_cm.h>
 717                 ],[
 718                         rdma_reject(NULL, NULL, 0, 0);
 719                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 720         ])
 721         AC_DEFUN([LN_O2IB_RDMA_REJECT], [
 722                 LB2_MSG_LINUX_TEST_RESULT([if 4arg 'rdma_reject' exists],
 723                 [rdma_reject], [
 724                         AC_DEFINE(HAVE_RDMA_REJECT_4ARGS, 1,
 725                                 [rdma_reject has 4 arguments])
 726                 ])
 727         ]) # LN_O2IB_RDMA_REJECT
 728
 729         #
 730         # LN_O2IB_IB_FMR
 731         #
 732         # The FMR pool API was removed in Linux 5.8,
 733         # commit 4e373d5417ecbb4f438a8500f0379a2fc29c2643
 734         AC_DEFUN([LN_SRC_O2IB_IB_FMR], [
 735                 LB2_LINUX_TEST_SRC([ib_fmr], [
 736                         #include <rdma/ib_verbs.h>
 737                 ],[
 738                         struct ib_fmr fmr = {};
 739                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 740         ])
 741         AC_DEFUN([LN_O2IB_IB_FMR], [
 742                 LB2_MSG_LINUX_TEST_RESULT([if FMR pools API available],
 743                 [ib_fmr], [
 744                         AC_DEFINE(HAVE_FMR_POOL_API, 1,
 745                                 [FMR pool API is available])
 746                 ])
 747         ]) # LN_O2IB_IB_FMR
 748
 749         #
 750         # LN_O2IB_RDMA_CONNECT_LOCKED
 751         #
 752         # rdma_connect_locked() was added in Linux 5.10,
 753         # commit 071ba4cc559de47160761b9500b72e8fa09d923d
 754         # and in MOFED-5.2-2. rdma_connect_locked() must
 755         # be called instead of rdma_connect() in
 756         # RDMA_CM_EVENT_ROUTE_RESOLVED handler.
 757         AC_DEFUN([LN_SRC_O2IB_RDMA_CONNECT_LOCKED], [
 758                 LB2_LINUX_TEST_SRC([rdma_connect_locked], [
 759                         #include <rdma/rdma_cm.h>
 760                 ],[
 761                         rdma_connect_locked(NULL, NULL);
 762                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 763         ])
 764         AC_DEFUN([LN_O2IB_RDMA_CONNECT_LOCKED], [
 765                 LB2_MSG_LINUX_TEST_RESULT([if 'rdma_connect_locked' exists],
 766                 [rdma_connect_locked], [
 767                         AC_DEFINE(HAVE_RDMA_CONNECT_LOCKED, 1,
 768                                 [rdma_connect_locked is defined])
 769                 ])
 770         ]) # LN_O2IB_RDMA_CONNECT_LOCKED
 771
 772         #
 773         # LN_O2IB_ETHTOOL_LINK_SETTINGS
 774         #
 775         # ethtool_link_settings was added in Linux 4.6
 776         #
 777         AC_DEFUN([LN_SRC_O2IB_ETHTOOL_LINK_SETTINGS], [
 778                 LB2_LINUX_TEST_SRC([ethtool_link_settings], [
 779                         #include <linux/ethtool.h>
 780                 ],[
 781                         struct ethtool_link_ksettings cmd;
 782                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 783         ])
 784         AC_DEFUN([LN_O2IB_ETHTOOL_LINK_SETTINGS], [
 785                 LB2_MSG_LINUX_TEST_RESULT([if 'ethtool_link_settings' exists],
 786                 [ethtool_link_settings], [
 787                         AC_DEFINE(HAVE_ETHTOOL_LINK_SETTINGS, 1,
 788                                 [ethtool_link_settings is defined])
 789                 ])
 790         ]) # LN_O2IB_ETHTOOL_LINK_SETTINGS
 791
 792         EXTRA_CHECK_INCLUDE=""
 793
 794         AC_DEFUN([LN_CONFIG_O2IB_SRC], [
 795                 LN_SRC_O2IB_RDMA_CREATE_ID_4A
 796                 LN_SRC_O2IB_RDMA_CREATE_ID_5A
 797                 LN_SRC_O2IB_IB_CQ_INIT_ATTR
 798                 LN_SRC_O2IB_IB_ALLOC_FAST_REG_MR
 799                 LN_SRC_O2IB_IB_GET_DMA_MR
 800                 LN_SRC_O2IB_IB_RDMA_WR
 801                 LN_SRC_O2IB_IB_MAP_MR_SG_4A
 802                 LN_SRC_O2IB_IB_MAP_MR_SG_5A
 803                 LN_SRC_O2IB_IB_DEVICE_ATTRS
 804                 LN_SRC_O2IB_IB_ALLOC_PD
 805                 LN_SRC_O2IB_IB_INC_RKEY
 806                 LN_SRC_O2IB_IB_POST_SEND_CONST
 807                 LN_SRC_SANE_IB_DMA_MAP_SG
 808                 LN_SRC_O2IB_IB_DEVICE_OPS_EXISTS
 809                 LN_SRC_O2IB_IB_SG_DMA_ADDRESS_EXISTS
 810                 LN_SRC_O2IB_RDMA_REJECT
 811                 LN_SRC_O2IB_IB_FMR
 812                 LN_SRC_O2IB_RDMA_CONNECT_LOCKED
 813                 LN_SRC_O2IB_ETHTOOL_LINK_SETTINGS
 814         ])
 815         AC_DEFUN([LN_CONFIG_O2IB_RESULTS], [
 816                 LN_O2IB_RDMA_CREATE_ID_4A
 817                 LN_O2IB_RDMA_CREATE_ID_5A
 818                 LN_O2IB_IB_CQ_INIT_ATTR
 819                 LN_O2IB_IB_ALLOC_FAST_REG_MR
 820                 LN_O2IB_IB_GET_DMA_MR
 821                 LN_O2IB_IB_RDMA_WR
 822                 LN_O2IB_IB_MAP_MR_SG_4A
 823                 LN_O2IB_IB_MAP_MR_SG_5A
 824                 LN_O2IB_IB_DEVICE_ATTRS
 825                 LN_O2IB_IB_ALLOC_PD
 826                 LN_O2IB_IB_INC_RKEY
 827                 LN_O2IB_IB_POST_SEND_CONST
 828                 LN_SANE_IB_DMA_MAP_SG
 829                 LN_O2IB_IB_DEVICE_OPS_EXISTS
 830                 LN_O2IB_IB_SG_DMA_ADDRESS_EXISTS
 831                 LN_O2IB_RDMA_REJECT
 832                 LN_O2IB_IB_FMR
 833                 LN_O2IB_RDMA_CONNECT_LOCKED
 834                 LN_O2IB_ETHTOOL_LINK_SETTINGS
 835         ])
 836 ]) # ENABLEO2IB != "no"
 837 ]) # LN_CONFIG_O2IB
 838
 839 #
 840 # LN_CONFIG_GNILND
 841 #
 842 # check whether to use the Gemini Network Interface lnd
 843 #
 844 AC_DEFUN([LN_CONFIG_GNILND], [
 845 AC_MSG_CHECKING([whether to enable GNI lnd])
 846 AC_ARG_ENABLE([gni],
 847         AS_HELP_STRING([--enable-gni],
 848                 [enable GNI lnd]),
 849         [], [enable_gni="no"])
 850 AC_MSG_RESULT([$enable_gni])
 851
 852 AS_IF([test "x$enable_gni" = xyes], [
 853         # GNICPPFLAGS was set in spec file
 854         EXTRA_KCFLAGS_save="$EXTRA_KCFLAGS"
 855         EXTRA_KCFLAGS="$EXTRA_KCFLAGS $GNICPPFLAGS"
 856         LB_CHECK_COMPILE([if GNI kernel headers are present],
 857         GNI_header, [
 858                 #include <linux/types.h>
 859                 #include <gni_pub.h>
 860         ],[
 861                 gni_cdm_handle_t kgni_domain;
 862                 gni_return_t     rc;
 863                 int              rrc;
 864                 rc = gni_cdm_create(0, 1, 1, 0, &kgni_domain);
 865                 rrc = (rc == GNI_RC_SUCCESS) ? 0 : 1;
 866                 return rrc;
 867         ],[
 868                 GNILND="gnilnd"
 869         ],[
 870                 AC_MSG_ERROR([cannot compile gnilnd with given GNICPPFLAGS: $GNICPPFLAGS])
 871         ])
 872         # at this point, we have gnilnd basic support,
 873         # now check for extra features
 874         LB_CHECK_COMPILE([to use RCA in gnilnd],
 875         RCA_gnilnd, [
 876                 #include <linux/types.h>
 877                 #include <gni_pub.h>
 878                 #include <krca_lib.h>
 879         ],[
 880                 gni_cdm_handle_t kgni_domain;
 881                 gni_return_t     rc;
 882                 krca_ticket_t    ticket = KRCA_NULL_TICKET;
 883                 int              rrc;
 884                 __u32            nid = 0, nic_addr;
 885                 rc = gni_cdm_create(0, 1, 1, 0, &kgni_domain);
 886                 rrc = (rc == GNI_RC_SUCCESS) ? 0 : 1;
 887                 rrc += krca_nid_to_nicaddrs(nid, 1, &nic_addr);
 888                 rrc += krca_register(&ticket, RCA_MAKE_SERVICE_INDEX(RCA_IO_CLASS, 9), 99, 0);
 889                 return rrc;
 890         ],[
 891                 GNICPPFLAGS="$GNICPPFLAGS -DGNILND_USE_RCA=1"
 892         ])
 893         EXTRA_KCFLAGS="$EXTRA_KCFLAGS_save"
 894
 895         AC_SUBST(ENABLE_GNI, yes)
 896 ], [
 897         AC_SUBST(ENABLE_GNI, no)
 898 ])
 899 AC_SUBST(GNICPPFLAGS)
 900 AC_SUBST(GNILND)
 901 ]) # LN_CONFIG_GNILND
 902
 903 #
 904 # LN_CONFIG_KFILND
 905 #
 906 # check whether to use the kfabric Network Interface lnd
 907 #
 908 AC_DEFUN([LN_CONFIG_KFILND], [
 909 AC_ARG_WITH([kfi],
 910         AS_HELP_STRING([--with-kfi=<path>], [Kfabric build path for kfilnd]),
 911         [
 912                 AC_CHECK_FILE([$with_kfi/Module.symvers],
 913                 [
 914                         # KFICPPFLAGS was set in spec file
 915                         KFICPPFLAGS="-I$with_kfi/include"
 916                         EXTRA_KCFLAGS_save="$EXTRA_KCFLAGS"
 917                         EXTRA_KCFLAGS="$EXTRA_KCFLAGS $KFICPPFLAGS"
 918                         KBUILD_EXTRA_SYMBOLS="$KBUILD_EXTRA_SYMBOLS $with_kfi/Module.symvers"
 919                         LB_CHECK_COMPILE([if kfabric headers are present], KFI_header,
 920                         [
 921                                 #include <kfi_endpoint.h>
 922                         ],[
 923                                 struct kfi_info *hints;
 924                                 hints = kfi_allocinfo();
 925                         ],[
 926                                 KFILND="kfilnd"
 927                                 AC_MSG_NOTICE([adding $with_kfi/Module.symvers to Symbol Path])
 928                                 EXTRA_SYMBOLS="$EXTRA_SYMBOLS $with_kfi/Module.symvers"
 929                         ],[
 930                                 AC_MSG_ERROR([can't compile kfilnd with given KFICPPFLAGS: $KFICPPFLAGS])
 931                         ])
 932                 ],[
 933                         AC_MSG_ERROR(["$with_kfi/Module.symvers does not exist"])
 934                 ])
 935         ],[])
 936 AC_DEFINE(HAVE_KFILND, 1, [support kfabric LND])
 937 AC_SUBST(KFICPPFLAGS)
 938 AC_SUBST(KFILND)
 939 AC_SUBST(EXTRA_SYMBOLS)
 940 ]) # LN_CONFIG_KFILND
 941
 942 #
 943 # LN_CONFIG_SOCK_CREATE_KERN
 944 #
 945 # 4.x sock_create_kern() added a first parameter as 'struct net *'
 946 # instead of int.
 947 #
 948 AC_DEFUN([LN_SRC_CONFIG_SOCK_CREATE_KERN], [
 949         LB2_LINUX_TEST_SRC([sock_create_kern_net], [
 950                 #include <linux/net.h>
 951                 #include <net/net_namespace.h>
 952         ],[
 953                 sock_create_kern((struct net*)0, 0, 0, 0, NULL);
 954         ],[-Werror])
 955 ])
 956 AC_DEFUN([LN_CONFIG_SOCK_CREATE_KERN], [
 957         LB2_MSG_LINUX_TEST_RESULT([if 'sock_create_kern' first parameter is net],
 958         [sock_create_kern_net], [
 959                 AC_DEFINE(HAVE_SOCK_CREATE_KERN_USE_NET, 1,
 960                         [sock_create_kern use net as first parameter])
 961         ])
 962 ]) # LN_CONFIG_SOCK_CREATE_KERN
 963
 964 #
 965 # LN_CONFIG_SK_DATA_READY
 966 #
 967 # 3.15 for struct sock the *sk_data_ready() field only takes one argument now
 968 #
 969 AC_DEFUN([LN_SRC_CONFIG_SK_DATA_READY], [
 970         LB2_LINUX_TEST_SRC([sk_data_ready], [
 971                 #include <linux/net.h>
 972                 #include <net/sock.h>
 973         ],[
 974                 ((struct sock *)0)->sk_data_ready(NULL);
 975         ],[-Werror])
 976 ])
 977 AC_DEFUN([LN_CONFIG_SK_DATA_READY], [
 978         LB2_MSG_LINUX_TEST_RESULT([if 'sk_data_ready' takes only one argument],
 979         [sk_data_ready], [
 980         AC_DEFINE(HAVE_SK_DATA_READY_ONE_ARG, 1,
 981                 [sk_data_ready uses only one argument])
 982         ])
 983 ]) # LN_CONFIG_SK_DATA_READY
 984
 985 #
 986 # LN_HAVE_HYPERVISOR_IS_TYPE
 987 #
 988 # 4.14 commit 79cc74155218316b9a5d28577c7077b2adba8e58
 989 # x86/paravirt: Provide a way to check for hypervisors
 990 #
 991 AC_DEFUN([LN_SRC_HAVE_HYPERVISOR_IS_TYPE], [
 992         LB2_LINUX_TEST_SRC([hypervisor_is_type_exists], [
 993                 #include <asm/hypervisor.h>
 994         ],[
 995                 (void)hypervisor_is_type(X86_HYPER_NATIVE);
 996         ],[-Werror])
 997 ])
 998 AC_DEFUN([LN_HAVE_HYPERVISOR_IS_TYPE], [
 999         LB2_MSG_LINUX_TEST_RESULT([if hypervisor_is_type function is available],
1000         [hypervisor_is_type_exists], [
1001                 AC_DEFINE(HAVE_HYPERVISOR_IS_TYPE, 1,
1002                         [hypervisor_is_type function exists])
1003         ])
1004 ]) # LN_HAVE_HYPERVISOR_IS_TYPE
1005
1006 #
1007 # LN_HAVE_ORACLE_OFED_EXTENSIONS
1008 #
1009 # Oracle UEK 5
1010 #
1011 AC_DEFUN([LN_SRC_HAVE_ORACLE_OFED_EXTENSIONS], [
1012         LB2_LINUX_TEST_SRC([oracle_ofed_ext], [
1013                 #include <rdma/ib_fmr_pool.h>
1014         ],[
1015                 struct ib_fmr_pool_param param = {
1016                         .relaxed           = 0
1017                 };
1018                 (void)param;
1019         ],[
1020                 AC_DEFINE(HAVE_ORACLE_OFED_EXTENSIONS, 1,
1021                         [if Oracle OFED Extensions are enabled])
1022         ])
1023 ])
1024 AC_DEFUN([LN_HAVE_ORACLE_OFED_EXTENSIONS], [
1025         LB2_MSG_LINUX_TEST_RESULT([if Oracle OFED Extensions are enabled],
1026         [oracle_ofed_ext], [
1027                 AC_DEFINE(HAVE_ORACLE_OFED_EXTENSIONS, 1,
1028                         [if Oracle OFED Extensions are enabled])
1029         ])
1030 ]) # LN_HAVE_ORACLE_OFED_EXTENSIONS
1031
1032 #
1033 # LN_CONFIG_SOCK_GETNAME
1034 #
1035 # 4.17 commit 9b2c45d479d0fb8647c9e83359df69162b5fbe5f getname()
1036 # does not take the length *int argument and returns the length
1037 #
1038 AC_DEFUN([LN_SRC_CONFIG_SOCK_GETNAME], [
1039         LB2_LINUX_TEST_SRC([kern_sock_getname_2args], [
1040                 #include <linux/net.h>
1041         ],[
1042                 kernel_getsockname(NULL, NULL);
1043         ],[-Werror])
1044 ])
1045 AC_DEFUN([LN_CONFIG_SOCK_GETNAME], [
1046         LB2_MSG_LINUX_TEST_RESULT([if 'getname' has two args],
1047         [kern_sock_getname_2args], [
1048                 AC_DEFINE(HAVE_KERN_SOCK_GETNAME_2ARGS, 1,
1049                         ['getname' has two args])
1050         ])
1051 ]) # LN_CONFIG_SOCK_GETNAME
1052
1053 #
1054 # LN_HAVE_IN_DEV_FOR_EACH_IFA_RTNL
1055 #
1056 # kernel 5.3 commit ef11db3310e272d3d8dbe8739e0770820dd20e52
1057 # and kernel 4.18.0-193.el8:
1058 # added in_dev_for_each_ifa_rtnl and in_dev_for_each_ifa_rcu
1059 # and removed for_ifa and endfor_ifa.
1060 # Use the _rntl variant as the current locking is rtnl.
1061 #
1062 AC_DEFUN([LN_SRC_HAVE_IN_DEV_FOR_EACH_IFA_RTNL], [
1063         LB2_LINUX_TEST_SRC([in_dev_for_each_ifa_rtnl_test], [
1064                 #include <linux/inetdevice.h>
1065         ],[
1066                 const struct in_ifaddr *ifa = NULL;
1067                 struct in_device *in_dev = NULL;
1068
1069                 in_dev_for_each_ifa_rtnl(ifa, in_dev) {}
1070         ],[-Werror])
1071 ])
1072 AC_DEFUN([LN_HAVE_IN_DEV_FOR_EACH_IFA_RTNL], [
1073         LB2_MSG_LINUX_TEST_RESULT([if 'in_dev_for_each_ifa_rtnl' is defined],
1074         [in_dev_for_each_ifa_rtnl_test], [
1075                 AC_DEFINE(HAVE_IN_DEV_FOR_EACH_IFA_RTNL, 1,
1076                         ['in_dev_for_each_ifa_rtnl' is defined])
1077         ])
1078 ]) # LN_HAVE_IN_DEV_FOR_EACH_IFA_RTNL
1079
1080 #
1081 # LN_USR_RDMA
1082 #
1083 #
1084 AC_DEFUN([LN_USR_RDMA], [
1085 AC_MSG_CHECKING([if RDMA_PS_TCP exists])
1086 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1087         #include <rdma/rdma_user_cm.h>
1088
1089         int main(void) {
1090                 int x = (int)RDMA_PS_TCP;
1091                 return x;
1092         }
1093 ])],[
1094         AC_DEFINE(HAVE_USRSPC_RDMA_PS_TCP, 1,
1095                 [RDMA_PS_TCP exists])
1096 ])
1097 ]) # LN_USR_RDMA
1098
1099
1100 AC_DEFUN([LN_PROG_LINUX_SRC], [
1101         LN_CONFIG_O2IB_SRC
1102         # 3.15
1103         LN_SRC_CONFIG_SK_DATA_READY
1104         # 4.x
1105         LN_SRC_CONFIG_SOCK_CREATE_KERN
1106         # 4.14
1107         LN_SRC_HAVE_HYPERVISOR_IS_TYPE
1108         LN_SRC_HAVE_ORACLE_OFED_EXTENSIONS
1109         # 4.17
1110         LN_SRC_CONFIG_SOCK_GETNAME
1111         # 5.3 and 4.18.0-193.el8
1112         LN_SRC_HAVE_IN_DEV_FOR_EACH_IFA_RTNL
1113 ])
1114
1115 AC_DEFUN([LN_PROG_LINUX_RESULTS], [
1116         LN_CONFIG_O2IB_RESULTS
1117         # 3.15
1118         LN_CONFIG_SK_DATA_READY
1119         # 4.x
1120         LN_CONFIG_SOCK_CREATE_KERN
1121         # 4.14
1122         LN_HAVE_HYPERVISOR_IS_TYPE
1123         LN_HAVE_ORACLE_OFED_EXTENSIONS
1124         # 4.17
1125         LN_CONFIG_SOCK_GETNAME
1126         # 5.3 and 4.18.0-193.el8
1127         LN_HAVE_IN_DEV_FOR_EACH_IFA_RTNL
1128 ])
1129
1130 #
1131 # LN_PROG_LINUX
1132 #
1133 # LNet linux kernel checks
1134 #
1135 AC_DEFUN([LN_PROG_LINUX], [
1136 AC_MSG_NOTICE([LNet kernel checks
1137 ==============================================================================])
1138
1139 LN_CONFIG_BACKOFF
1140 LN_CONFIG_O2IB
1141 LN_CONFIG_GNILND
1142 LN_CONFIG_KFILND
1143 ]) # LN_PROG_LINUX
1144
1145 #
1146 # LN_PATH_DEFAULTS
1147 #
1148 # default paths for installed files
1149 #
1150 AC_DEFUN([LN_PATH_DEFAULTS], [
1151 ]) # LN_PATH_DEFAULTS
1152
1153 #
1154 # LN_CONFIGURE
1155 #
1156 # other configure checks
1157 #
1158 AC_DEFUN([LN_CONFIGURE], [
1159 AC_MSG_NOTICE([LNet core checks
1160 ==============================================================================])
1161
1162 AC_ARG_WITH([cuda],
1163         AS_HELP_STRING([--with-cuda=path],
1164                         [Use a CUDA sources.]),
1165         [LB_ARG_CANON_PATH([cuda], [CUDA_PATH])],
1166         [CUDA_PATH=`ls -d1 /usr/src/nvidia-*/nvidia/ | tail -1`]
1167 )
1168
1169 AC_ARG_WITH([gds],
1170         AS_HELP_STRING([--with-gds=path],
1171                         [Use a gds sources.]),
1172         [LB_ARG_CANON_PATH([gds], [GDS_PATH])],
1173         [GDS_PATH=`ls -d1 /usr/src/nvidia-fs* | tail -1`]
1174 )
1175
1176 AS_IF([test -n "${CUDA_PATH}" && test -n "${GDS_PATH}"],[
1177 LB_CHECK_FILE([$CUDA_PATH/nv-p2p.h],
1178         [
1179         AC_MSG_RESULT([CUDA path is $CUDA_PATH])
1180         AC_SUBST(CUDA_PATH)
1181         ],
1182         [AC_MSG_ERROR([CUDA sources don't found. nv-p2p.h don't exit])]
1183 )
1184
1185 LB_CHECK_FILE([$GDS_PATH/nvfs-dma.h],
1186         [
1187         LB_CHECK_FILE([$GDS_PATH/config-host.h], [
1188         AC_MSG_RESULT([GDS path is $GDS_PATH])
1189         AC_SUBST(GDS_PATH)
1190         AC_DEFINE(WITH_GDS, 1, "GDS build enabled")
1191         ], [])
1192         ],
1193         [])
1194 ],[
1195         AC_MSG_WARN([CUDA or GDS sources not found. GDS support disabled])
1196 ]
1197 )
1198
1199 # lnet/utils/lnetconfig/liblnetconfig_netlink.c
1200 AS_IF([test "x$PKGCONF" = "x"],
1201         [AC_MSG_ERROR([pkg-config package is required to configure Lustre])])
1202
1203 AS_IF([test "x$enable_dist" = xno], [
1204         PKG_CHECK_MODULES(LIBNL3, [libnl-genl-3.0 >= 3.1])
1205 ])
1206
1207 AC_CHECK_LIB([nl-3], [nla_get_s32], [
1208         AC_DEFINE(HAVE_NLA_GET_S32, 1,
1209                 [libnl3 supports nla_get_s32])
1210         ], [
1211 ])
1212
1213 AC_CHECK_LIB([nl-3], [nla_get_s64], [
1214         AC_DEFINE(HAVE_NLA_GET_S64, 1,
1215                 [libnl3 supports nla_get_s64])
1216         ], [
1217 ])
1218
1219 #
1220 # LN_USR_NLMSGERR
1221 #
1222 AC_DEFUN([LN_USR_NLMSGERR], [
1223 AC_MSG_CHECKING([if 'enum nlmsgerr_attrs' exists])
1224 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1225         #include <linux/netlink.h>
1226
1227         int main(void) {
1228                 int x = (int)NLMSGERR_ATTR_MAX;
1229                 return x;
1230         }
1231 ])],[
1232         AC_DEFINE(HAVE_USRSPC_NLMSGERR, 1,
1233                 ['enum nlmsgerr_attrs' exists])
1234 ])
1235 ]) # LN_USR_NLMGSERR
1236
1237 # lnet/utils/portals.c
1238 AC_CHECK_HEADERS([netdb.h])
1239 AC_CHECK_FUNCS([gethostbyname])
1240
1241 # lnet/utils/wirecheck.c
1242 AC_CHECK_FUNCS([strnlen])
1243
1244 # --------  Check for required packages  --------------
1245
1246 AC_MSG_CHECKING([whether to enable 'efence' debugging support])
1247 AC_ARG_ENABLE(efence,
1248         AS_HELP_STRING([--enable-efence],
1249                 [use efence library]),
1250         [], [enable_efence="no"])
1251 AC_MSG_RESULT([$enable_efence])
1252
1253 LIBEFENCE=""
1254 AS_IF([test "$enable_efence" = yes], [
1255         LIBEFENCE="-lefence"
1256         AC_DEFINE(HAVE_LIBEFENCE, 1,
1257                 [libefence support is requested])
1258         AC_SUBST(ENABLE_EFENCE, yes)
1259 ], [
1260         AC_SUBST(ENABLE_EFENCE, no)
1261 ])
1262 AC_SUBST(LIBEFENCE)
1263
1264 LN_CONFIG_DLC
1265 LN_USR_RDMA
1266 LN_USR_NLMSGERR
1267 ]) # LN_CONFIGURE
1268
1269 #
1270 # LN_CONDITIONALS
1271 #
1272 # AM_CONDITIONAL defines for lnet
1273 #
1274 AC_DEFUN([LN_CONDITIONALS], [
1275 AM_CONDITIONAL(BUILD_O2IBLND,    test x$O2IBLND = "xo2iblnd")
1276 AM_CONDITIONAL(BUILD_GNILND,     test x$GNILND  = "xgnilnd")
1277 AM_CONDITIONAL(BUILD_KFILND,     test x$KFILND  = "xkfilnd")
1278 ]) # LN_CONDITIONALS
1279
1280 #
1281 # LN_CONFIG_FILES
1282 #
1283 # files that should be generated with AC_OUTPUT
1284 #
1285 AC_DEFUN([LN_CONFIG_FILES], [
1286 AC_CONFIG_FILES([
1287 lnet/Makefile
1288 lnet/autoMakefile
1289 lnet/autoconf/Makefile
1290 lnet/doc/Makefile
1291 lnet/include/Makefile
1292 lnet/include/lnet/Makefile
1293 lnet/include/uapi/linux/lnet/Makefile
1294 lnet/klnds/Makefile
1295 lnet/klnds/autoMakefile
1296 lnet/klnds/o2iblnd/Makefile
1297 lnet/klnds/o2iblnd/autoMakefile
1298 lnet/klnds/gnilnd/Makefile
1299 lnet/klnds/gnilnd/autoMakefile
1300 lnet/klnds/socklnd/Makefile
1301 lnet/klnds/socklnd/autoMakefile
1302 lnet/klnds/kfilnd/Makefile
1303 lnet/klnds/kfilnd/autoMakefile
1304 lnet/lnet/Makefile
1305 lnet/lnet/autoMakefile
1306 lnet/selftest/Makefile
1307 lnet/selftest/autoMakefile
1308 lnet/utils/Makefile
1309 lnet/utils/lnetconfig/Makefile
1310 ])
1311 ]) # LN_CONFIG_FILES