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                         fi
 259                 else
 260                         AC_MSG_ERROR([an external source tree was, either specified or detected, for o2iblnd however I could not find a $O2IBPATH/Module.symvers there])
 261                 fi
 262
 263                 LB_CHECK_COMPILE([if Linux kernel has kthread_worker],
 264                 linux_kthread_worker, [
 265                         #ifdef HAVE_COMPAT_RDMA
 266                         #undef PACKAGE_NAME
 267                         #undef PACKAGE_TARNAME
 268                         #undef PACKAGE_VERSION
 269                         #undef PACKAGE_STRING
 270                         #undef PACKAGE_BUGREPORT
 271                         #undef PACKAGE_URL
 272                         #include <linux/compat-2.6.h>
 273                         #endif
 274                         #include <linux/kthread.h>
 275                 ],[
 276                         struct kthread_work *kth_wrk = NULL;
 277                         flush_kthread_work(kth_wrk);
 278                 ],[
 279                         AC_DEFINE(HAVE_KTHREAD_WORK, 1, [kthread_worker found])
 280                         if test -z "$COMPAT_AUTOCONF"; then
 281                                 EXTRA_OFED_INCLUDE="$EXTRA_OFED_INCLUDE -DCONFIG_COMPAT_IS_KTHREAD"
 282                         fi
 283                 ])
 284                 EXTRA_CHECK_INCLUDE=""
 285         fi
 286 ])
 287 AC_SUBST(EXTRA_OFED_CONFIG)
 288 AC_SUBST(EXTRA_OFED_INCLUDE)
 289 AC_SUBST(O2IBLND)
 290 AC_SUBST(O2IBPATH)
 291 AC_SUBST(ENABLEO2IB)
 292
 293 AS_IF([test $ENABLEO2IB != "no"], [
 294         EXTRA_CHECK_INCLUDE="$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE"
 295         if test ! $O2IBPATH -ef $LINUX_OBJ; then
 296                 KBUILD_EXTRA_SYMBOLS="$KBUILD_EXTRA_SYMBOLS $O2IBPATH/Module.symvers"
 297         fi
 298
 299         # In RHEL 6.2, rdma_create_id() takes the queue-pair type as a fourth argument
 300         AC_DEFUN([LN_SRC_O2IB_RDMA_CREATE_ID_4A], [
 301                 LB2_LINUX_TEST_SRC([rdma_create_id_4args], [
 302                         #ifdef HAVE_COMPAT_RDMA
 303                         #undef PACKAGE_NAME
 304                         #undef PACKAGE_TARNAME
 305                         #undef PACKAGE_VERSION
 306                         #undef PACKAGE_STRING
 307                         #undef PACKAGE_BUGREPORT
 308                         #undef PACKAGE_URL
 309                         #include <linux/compat-2.6.h>
 310                         #endif
 311                         #include <rdma/rdma_cm.h>
 312                 ],[
 313                         rdma_create_id(NULL, NULL, 0, 0);
 314                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 315         ])
 316         AC_DEFUN([LN_O2IB_RDMA_CREATE_ID_4A], [
 317                 AC_MSG_CHECKING([if 'rdma_create_id' wants four args])
 318                 LB2_LINUX_TEST_RESULT([rdma_create_id_4args], [
 319                         AC_DEFINE(HAVE_RDMA_CREATE_ID_4ARG, 1,
 320                                 [rdma_create_id wants 4 args])
 321                 ])
 322         ])
 323
 324         # 4.4 added network namespace parameter for rdma_create_id()
 325         AC_DEFUN([LN_SRC_O2IB_RDMA_CREATE_ID_5A], [
 326                 LB2_LINUX_TEST_SRC([rdma_create_id_5args], [
 327                         #ifdef HAVE_COMPAT_RDMA
 328                         #undef PACKAGE_NAME
 329                         #undef PACKAGE_TARNAME
 330                         #undef PACKAGE_VERSION
 331                         #undef PACKAGE_STRING
 332                         #undef PACKAGE_BUGREPORT
 333                         #undef PACKAGE_URL
 334                         #include <linux/compat-2.6.h>
 335                         #endif
 336                         #include <rdma/rdma_cm.h>
 337                 ],[
 338                         rdma_create_id(NULL, NULL, NULL, 0, 0);
 339                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 340         ])
 341         AC_DEFUN([LN_O2IB_RDMA_CREATE_ID_5A], [
 342                 AC_MSG_CHECKING([if 'rdma_create_id' wants five args])
 343                 LB2_LINUX_TEST_RESULT([rdma_create_id_5args], [
 344                         AC_DEFINE(HAVE_RDMA_CREATE_ID_5ARG, 1,
 345                                 [rdma_create_id wants 5 args])
 346                 ])
 347         ])
 348
 349         # 4.2 introduced struct ib_cq_init_attr which is used
 350         # by ib_create_cq(). Note some OFED stacks only keep
 351         # their headers in sync with latest kernels but not
 352         # the functionality which means for infiniband testing
 353         # we need to always test functionality testings.
 354         AC_DEFUN([LN_SRC_O2IB_IB_CQ_INIT_ATTR], [
 355                 LB2_LINUX_TEST_SRC([ib_cq_init_attr], [
 356                         #ifdef HAVE_COMPAT_RDMA
 357                         #undef PACKAGE_NAME
 358                         #undef PACKAGE_TARNAME
 359                         #undef PACKAGE_VERSION
 360                         #undef PACKAGE_STRING
 361                         #undef PACKAGE_BUGREPORT
 362                         #undef PACKAGE_URL
 363                         #include <linux/compat-2.6.h>
 364                         #endif
 365                         #include <rdma/ib_verbs.h>
 366                 ],[
 367                         struct ib_cq_init_attr cq_attr;
 368
 369                         ib_create_cq(NULL, NULL, NULL, NULL, &cq_attr);
 370                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 371         ])
 372         AC_DEFUN([LN_O2IB_IB_CQ_INIT_ATTR], [
 373                 AC_MSG_CHECKING([if 'struct ib_cq_init_attr' is used])
 374                 LB2_LINUX_TEST_RESULT([ib_cq_init_attr], [
 375                         AC_DEFINE(HAVE_IB_CQ_INIT_ATTR, 1,
 376                                 [struct ib_cq_init_attr is used by ib_create_cq])
 377                 ])
 378         ])
 379
 380         # 4.3 removed ib_alloc_fast_reg_mr()
 381         AC_DEFUN([LN_SRC_O2IB_IB_ALLOC_FAST_REG_MR], [
 382                 LB2_LINUX_TEST_SRC([ib_alloc_fast_reg_mr], [
 383                         #ifdef HAVE_COMPAT_RDMA
 384                         #undef PACKAGE_NAME
 385                         #undef PACKAGE_TARNAME
 386                         #undef PACKAGE_VERSION
 387                         #undef PACKAGE_STRING
 388                         #undef PACKAGE_BUGREPORT
 389                         #undef PACKAGE_URL
 390                         #include <linux/compat-2.6.h>
 391                         #endif
 392                         #include <rdma/ib_verbs.h>
 393                 ],[
 394                         ib_alloc_fast_reg_mr(NULL, 0);
 395                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 396         ])
 397         AC_DEFUN([LN_O2IB_IB_ALLOC_FAST_REG_MR], [
 398                 AC_MSG_CHECKING([if 'ib_alloc_fast_reg_mr' exists])
 399                 LB2_LINUX_TEST_RESULT([ib_alloc_fast_reg_mr], [
 400                         AC_DEFINE(HAVE_IB_ALLOC_FAST_REG_MR, 1,
 401                                 [ib_alloc_fast_reg_mr is defined])
 402                 ])
 403         ])
 404
 405         # 4.9 must stop using ib_get_dma_mr and the global MR
 406         # We then have to use FMR/Fastreg for all RDMA.
 407         AC_DEFUN([LN_SRC_O2IB_IB_GET_DMA_MR], [
 408                 LB2_LINUX_TEST_SRC([ib_get_dma_mr], [
 409                         #ifdef HAVE_COMPAT_RDMA
 410                         #undef PACKAGE_NAME
 411                         #undef PACKAGE_TARNAME
 412                         #undef PACKAGE_VERSION
 413                         #undef PACKAGE_STRING
 414                         #undef PACKAGE_BUGREPORT
 415                         #undef PACKAGE_URL
 416                         #include <linux/compat-2.6.h>
 417                         #endif
 418                         #include <rdma/ib_verbs.h>
 419                 ],[
 420                         ib_get_dma_mr(NULL, 0);
 421                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 422         ])
 423         AC_DEFUN([LN_O2IB_IB_GET_DMA_MR], [
 424                 AC_MSG_CHECKING([if 'ib_get_dma_mr' exists])
 425                 LB2_LINUX_TEST_RESULT([ib_get_dma_mr], [
 426                         AC_DEFINE(HAVE_IB_GET_DMA_MR, 1,
 427                                 [ib_get_dma_mr is defined])
 428                 ])
 429         ])
 430
 431         # In v4.4 Linux kernel,
 432         # commit e622f2f4ad2142d2a613a57fb85f8cf737935ef5
 433         # split up struct ib_send_wr so that all non-trivial verbs
 434         # use their own structure which embedds struct ib_send_wr.
 435         AC_DEFUN([LN_SRC_O2IB_IB_RDMA_WR], [
 436                 LB2_LINUX_TEST_SRC([ib_rdma_wr], [
 437                         #ifdef HAVE_COMPAT_RDMA
 438                         #undef PACKAGE_NAME
 439                         #undef PACKAGE_TARNAME
 440                         #undef PACKAGE_VERSION
 441                         #undef PACKAGE_STRING
 442                         #undef PACKAGE_BUGREPORT
 443                         #undef PACKAGE_URL
 444                         #include <linux/compat-2.6.h>
 445                         #endif
 446                         #include <rdma/ib_verbs.h>
 447                 ],[
 448                         const struct ib_rdma_wr *wr __attribute__ ((unused));
 449
 450                         wr = rdma_wr(NULL);
 451                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 452         ])
 453         AC_DEFUN([LN_O2IB_IB_RDMA_WR], [
 454                 AC_MSG_CHECKING([if 'struct ib_rdma_wr' is defined])
 455                 LB2_LINUX_TEST_RESULT([ib_rdma_wr], [
 456                         AC_DEFINE(HAVE_IB_RDMA_WR, 1,
 457                                 [struct ib_rdma_wr is defined])
 458                 ])
 459         ])
 460
 461         # new fast registration API introduced in 4.4
 462         AC_DEFUN([LN_SRC_O2IB_IB_MAP_MR_SG_4A], [
 463                 LB2_LINUX_TEST_SRC([ib_map_mr_sg_4args], [
 464                         #ifdef HAVE_COMPAT_RDMA
 465                         #undef PACKAGE_NAME
 466                         #undef PACKAGE_TARNAME
 467                         #undef PACKAGE_VERSION
 468                         #undef PACKAGE_STRING
 469                         #undef PACKAGE_BUGREPORT
 470                         #undef PACKAGE_URL
 471                         #include <linux/compat-2.6.h>
 472                         #endif
 473                         #include <rdma/ib_verbs.h>
 474                 ],[
 475                         ib_map_mr_sg(NULL, NULL, 0, 0);
 476                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 477         ])
 478         # new fast registration API introduced in 4.4
 479         AC_DEFUN([LN_O2IB_IB_MAP_MR_SG_4A], [
 480                 AC_MSG_CHECKING([if 4arg 'ib_map_mr_sg' exists])
 481                 LB2_LINUX_TEST_RESULT([ib_map_mr_sg_4args], [
 482                         AC_DEFINE(HAVE_IB_MAP_MR_SG, 1,
 483                                 [ib_map_mr_sg exists])
 484                 ])
 485         ])
 486
 487         # ib_map_mr_sg changes from 4 to 5 args (adding sg_offset_p)
 488         # in kernel 4.7 (and RHEL 7.3)
 489         AC_DEFUN([LN_SRC_O2IB_IB_MAP_MR_SG_5A], [
 490                 LB2_LINUX_TEST_SRC([ib_map_mr_sg_5args], [
 491                         #ifdef HAVE_COMPAT_RDMA
 492                         #undef PACKAGE_NAME
 493                         #undef PACKAGE_TARNAME
 494                         #undef PACKAGE_VERSION
 495                         #undef PACKAGE_STRING
 496                         #undef PACKAGE_BUGREPORT
 497                         #undef PACKAGE_URL
 498                         #include <linux/compat-2.6.h>
 499                         #endif
 500                         #include <rdma/ib_verbs.h>
 501                 ],[
 502                         ib_map_mr_sg(NULL, NULL, 0, NULL, 0);
 503                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 504         ])
 505         AC_DEFUN([LN_O2IB_IB_MAP_MR_SG_5A], [
 506                 AC_MSG_CHECKING([if 5arg 'ib_map_mr_sg' exists])
 507                 LB2_LINUX_TEST_RESULT([ib_map_mr_sg_5args], [
 508                         AC_DEFINE(HAVE_IB_MAP_MR_SG, 1,
 509                                 [ib_map_mr_sg exists])
 510                         AC_DEFINE(HAVE_IB_MAP_MR_SG_5ARGS, 1,
 511                                 [ib_map_mr_sg has 5 arguments])
 512                 ])
 513         ])
 514
 515         # ib_query_device() removed in 4.5
 516         AC_DEFUN([LN_SRC_O2IB_IB_DEVICE_ATTRS], [
 517                 LB2_LINUX_TEST_SRC([ib_device_attrs], [
 518                         #ifdef HAVE_COMPAT_RDMA
 519                         #undef PACKAGE_NAME
 520                         #undef PACKAGE_TARNAME
 521                         #undef PACKAGE_VERSION
 522                         #undef PACKAGE_STRING
 523                         #undef PACKAGE_BUGREPORT
 524                         #undef PACKAGE_URL
 525                         #include <linux/compat-2.6.h>
 526                         #endif
 527                         #include <rdma/ib_verbs.h>
 528                 ],[
 529                         struct ib_device dev;
 530                         struct ib_device_attr dev_attr = {};
 531                         dev.attrs = dev_attr;
 532                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 533         ])
 534         AC_DEFUN([LN_O2IB_IB_DEVICE_ATTRS], [
 535                 AC_MSG_CHECKING([if 'struct ib_device' has member 'attrs'])
 536                 LB2_LINUX_TEST_RESULT([ib_device_attrs], [
 537                         AC_DEFINE(HAVE_IB_DEVICE_ATTRS, 1,
 538                                 [struct ib_device.attrs is defined])
 539                 ])
 540         ])
 541
 542         # A flags argument was added to ib_alloc_pd() in Linux 4.9,
 543         # commit ed082d36a7b2c27d1cda55fdfb28af18040c4a89
 544         AC_DEFUN([LN_SRC_O2IB_IB_ALLOC_PD], [
 545                 LB2_LINUX_TEST_SRC([ib_alloc_pd], [
 546                         #ifdef HAVE_COMPAT_RDMA
 547                         #undef PACKAGE_NAME
 548                         #undef PACKAGE_TARNAME
 549                         #undef PACKAGE_VERSION
 550                         #undef PACKAGE_STRING
 551                         #undef PACKAGE_BUGREPORT
 552                         #undef PACKAGE_URL
 553                         #include <linux/compat-2.6.h>
 554                         #endif
 555                         #include <rdma/ib_verbs.h>
 556                 ],[
 557                         ib_alloc_pd(NULL, 0);
 558                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 559         ])
 560         AC_DEFUN([LN_O2IB_IB_ALLOC_PD], [
 561                 AC_MSG_CHECKING([if 2arg 'ib_alloc_pd' exists])
 562                 LB2_LINUX_TEST_RESULT([ib_alloc_pd], [
 563                         AC_DEFINE(HAVE_IB_ALLOC_PD_2ARGS, 1,
 564                                 [ib_alloc_pd has 2 arguments])
 565                 ])
 566         ])
 567
 568         AC_DEFUN([LN_SRC_O2IB_IB_INC_RKEY], [
 569                 LB2_LINUX_TEST_SRC([ib_inc_rkey], [
 570                         #ifdef HAVE_COMPAT_RDMA
 571                         #undef PACKAGE_NAME
 572                         #undef PACKAGE_TARNAME
 573                         #undef PACKAGE_VERSION
 574                         #undef PACKAGE_STRING
 575                         #undef PACKAGE_BUGREPORT
 576                         #undef PACKAGE_URL
 577                         #include <linux/compat-2.6.h>
 578                         #endif
 579                         #include <rdma/ib_verbs.h>
 580                 ],[
 581                         (void)ib_inc_rkey(0);
 582                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 583         ])
 584         AC_DEFUN([LN_O2IB_IB_INC_RKEY], [
 585                 AC_MSG_CHECKING([if function 'ib_inc_rkey' is defined])
 586                 LB2_LINUX_TEST_RESULT([ib_inc_rkey], [
 587                         AC_DEFINE(HAVE_IB_INC_RKEY, 1,
 588                                   [function ib_inc_rkey exist])
 589                 ])
 590         ])
 591
 592         # In MOFED 4.6, the second and third parameters for
 593         # ib_post_send() and ib_post_recv() are declared with
 594         # 'const'.
 595         AC_DEFUN([LN_SRC_O2IB_IB_POST_SEND_CONST], [
 596                 LB2_LINUX_TEST_SRC([ib_post_send_recv_const], [
 597                         #ifdef HAVE_COMPAT_RDMA
 598                         #undef PACKAGE_NAME
 599                         #undef PACKAGE_TARNAME
 600                         #undef PACKAGE_VERSION
 601                         #undef PACKAGE_STRING
 602                         #undef PACKAGE_BUGREPORT
 603                         #undef PACKAGE_URL
 604                         #include <linux/compat-2.6.h>
 605                         #endif
 606                         #include <rdma/ib_verbs.h>
 607                 ],[
 608                         ib_post_send(NULL, (const struct ib_send_wr *)NULL,
 609                                      (const struct ib_send_wr **)NULL);
 610                 ],[-Werror],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 611         ])
 612         AC_DEFUN([LN_O2IB_IB_POST_SEND_CONST], [
 613                 AC_MSG_CHECKING([if 'ib_post_send() and ib_post_recv()' have const parameters])
 614                 LB2_LINUX_TEST_RESULT([ib_post_send_recv_const], [
 615                         AC_DEFINE(HAVE_IB_POST_SEND_RECV_CONST, 1,
 616                                 [ib_post_send and ib_post_recv have const parameters])
 617                 ])
 618         ])
 619
 620         # MOFED 5.5 fails with:
 621         #   ERROR: "ib_dma_virt_map_sg" [.../ko2iblnd.ko] undefined!
 622         # See if we have a broken ib_dma_map_sg()
 623         AC_DEFUN([LN_SRC_SANE_IB_DMA_MAP_SG], [
 624                 LB2_LINUX_TEST_SRC([sane_ib_dma_map_sg], [
 625                         #ifdef HAVE_COMPAT_RDMA
 626                         #undef PACKAGE_NAME
 627                         #undef PACKAGE_TARNAME
 628                         #undef PACKAGE_VERSION
 629                         #undef PACKAGE_STRING
 630                         #undef PACKAGE_BUGREPORT
 631                         #undef PACKAGE_URL
 632                         #include <linux/compat-2.6.h>
 633                         #endif
 634                         #include <rdma/ib_verbs.h>
 635                 ],[
 636                         ib_dma_map_sg((struct ib_device *)NULL,
 637                                       (struct scatterlist *)NULL, 1, 0);
 638                 ],[-Werror],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 639         ])
 640         AC_DEFUN([LN_SANE_IB_DMA_MAP_SG], [
 641                 AC_MSG_CHECKING([if ib_dma_map_sg() is sane])
 642                 LB2_LINUX_TEST_RESULT([sane_ib_dma_map_sg], [
 643                         AC_DEFINE(HAVE_SANE_IB_DMA_MAP_SG, 1,
 644                                 [ib_dma_map_sg is sane])
 645                 ],[],[module])
 646         ])
 647
 648         #
 649         # LN_IB_DEVICE_OPS_EXISTS
 650         #
 651         # kernel 5.0 commit 521ed0d92ab0db3edd17a5f4716b7f698f4fce61
 652         # RDMA/core: Introduce ib_device_ops
 653         # ... introduces the ib_device_ops structure that defines all the
 654         # InfiniBand device operations in one place ...
 655         #
 656         AC_DEFUN([LN_SRC_O2IB_IB_DEVICE_OPS_EXISTS], [
 657                 LB2_LINUX_TEST_SRC([ib_device_ops_test], [
 658                         #include <rdma/ib_verbs.h>
 659                 ],[
 660                         int x = offsetof(struct ib_device_ops, unmap_fmr);
 661                         x = x;
 662                         (void)x;
 663                 ],[-Werror],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 664         ])
 665         AC_DEFUN([LN_O2IB_IB_DEVICE_OPS_EXISTS], [
 666                 AC_MSG_CHECKING([if struct ib_device_ops is defined])
 667                 LB2_LINUX_TEST_RESULT([ib_device_ops_test], [
 668                         AC_DEFINE(HAVE_IB_DEVICE_OPS, 1,
 669                                 [if struct ib_device_ops is defined])
 670                 ])
 671         ]) # LN_IB_DEVICE_OPS_EXISTS
 672
 673         #
 674         # LN_O2IB_IB_SG_DMA_ADDRESS_EXISTS
 675         #
 676         # kernel 5.1 commit a163afc88556e099271a7b423295bc5176fcecce
 677         # IB/core: Remove ib_sg_dma_address() and ib_sg_dma_len()
 678         # ... when dma_ops existed (3.6) ib_sg_dma_address() was not trivial ...
 679         #
 680         AC_DEFUN([LN_SRC_O2IB_IB_SG_DMA_ADDRESS_EXISTS], [
 681                 LB2_LINUX_TEST_SRC([ib_sg_dma_address_test], [
 682                         #include <rdma/ib_verbs.h>
 683                 ],[
 684                         u64 x = ib_sg_dma_address(NULL, NULL);
 685                         x = x;
 686                         (void)x;
 687                 ],[-Werror],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 688         ])
 689         AC_DEFUN([LN_O2IB_IB_SG_DMA_ADDRESS_EXISTS], [
 690                 AC_MSG_CHECKING([if ib_sg_dma_address wrapper exists])
 691                 LB2_LINUX_TEST_RESULT([ib_sg_dma_address_test], [
 692                         AC_DEFINE(HAVE_IB_SG_DMA_ADDRESS, 1,
 693                                 [if ib_sg_dma_address wrapper exists])
 694                 ])
 695         ]) # LN_O2IB_IB_SG_DMA_ADDRESS_EXISTS
 696
 697         #
 698         # LN_O2IB_RDMA_REJECT
 699         #
 700         # A reason argument was added to rdma_reject() in Linux 5.8,
 701         # commit 8094ba0ace7f6cd1e31ea8b151fba3594cadfa9a
 702         AC_DEFUN([LN_SRC_O2IB_RDMA_REJECT], [
 703                 LB2_LINUX_TEST_SRC([rdma_reject], [
 704                         #ifdef HAVE_COMPAT_RDMA
 705                         #undef PACKAGE_NAME
 706                         #undef PACKAGE_TARNAME
 707                         #undef PACKAGE_VERSION
 708                         #undef PACKAGE_STRING
 709                         #undef PACKAGE_BUGREPORT
 710                         #undef PACKAGE_URL
 711                         #include <linux/compat-2.6.h>
 712                         #endif
 713                         #include <rdma/ib_verbs.h>
 714                         #include <rdma/ib_cm.h>
 715                         #include <rdma/rdma_cm.h>
 716                 ],[
 717                         rdma_reject(NULL, NULL, 0, 0);
 718                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 719         ])
 720         AC_DEFUN([LN_O2IB_RDMA_REJECT], [
 721                 AC_MSG_CHECKING([if 4arg 'rdma_reject' exists])
 722                 LB2_LINUX_TEST_RESULT([rdma_reject], [
 723                         AC_DEFINE(HAVE_RDMA_REJECT_4ARGS, 1,
 724                                 [rdma_reject has 4 arguments])
 725                 ])
 726         ]) # LN_O2IB_RDMA_REJECT
 727
 728         #
 729         # LN_O2IB_IB_FMR
 730         #
 731         # The FMR pool API was removed in Linux 5.8,
 732         # commit 4e373d5417ecbb4f438a8500f0379a2fc29c2643
 733         AC_DEFUN([LN_SRC_O2IB_IB_FMR], [
 734                 LB2_LINUX_TEST_SRC([ib_fmr], [
 735                         #include <rdma/ib_verbs.h>
 736                 ],[
 737                         struct ib_fmr fmr = {};
 738                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 739         ])
 740         AC_DEFUN([LN_O2IB_IB_FMR], [
 741                 AC_MSG_CHECKING([if FMR pools API available])
 742                 LB2_LINUX_TEST_RESULT([ib_fmr], [
 743                         AC_DEFINE(HAVE_FMR_POOL_API, 1,
 744                                 [FMR pool API is available])
 745                 ])
 746         ]) # LN_O2IB_IB_FMR
 747
 748         #
 749         # LN_O2IB_RDMA_CONNECT_LOCKED
 750         #
 751         # rdma_connect_locked() was added in Linux 5.10,
 752         # commit 071ba4cc559de47160761b9500b72e8fa09d923d
 753         # and in MOFED-5.2-2. rdma_connect_locked() must
 754         # be called instead of rdma_connect() in
 755         # RDMA_CM_EVENT_ROUTE_RESOLVED handler.
 756         AC_DEFUN([LN_SRC_O2IB_RDMA_CONNECT_LOCKED], [
 757                 LB2_LINUX_TEST_SRC([rdma_connect_locked], [
 758                         #include <rdma/rdma_cm.h>
 759                 ],[
 760                         rdma_connect_locked(NULL, NULL);
 761                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 762         ])
 763         AC_DEFUN([LN_O2IB_RDMA_CONNECT_LOCKED], [
 764                 AC_MSG_CHECKING([if 'rdma_connect_locked' exists])
 765                 LB2_LINUX_TEST_RESULT([rdma_connect_locked], [
 766                         AC_DEFINE(HAVE_RDMA_CONNECT_LOCKED, 1,
 767                                 [rdma_connect_locked is defined])
 768                 ])
 769         ]) # LN_O2IB_RDMA_CONNECT_LOCKED
 770
 771         #
 772         # LN_O2IB_ETHTOOL_LINK_SETTINGS
 773         #
 774         # ethtool_link_settings was added in Linux 4.6
 775         #
 776         AC_DEFUN([LN_SRC_O2IB_ETHTOOL_LINK_SETTINGS], [
 777                 LB2_LINUX_TEST_SRC([ethtool_link_settings], [
 778                         #include <linux/ethtool.h>
 779                 ],[
 780                         struct ethtool_link_ksettings cmd;
 781                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 782         ])
 783         AC_DEFUN([LN_O2IB_ETHTOOL_LINK_SETTINGS], [
 784                 AC_MSG_CHECKING([if 'ethtool_link_settings' exists])
 785                 LB2_LINUX_TEST_RESULT([ethtool_link_settings], [
 786                         AC_DEFINE(HAVE_ETHTOOL_LINK_SETTINGS, 1,
 787                                 [ethtool_link_settings is defined])
 788                 ])
 789         ]) # LN_O2IB_ETHTOOL_LINK_SETTINGS
 790
 791         EXTRA_CHECK_INCLUDE=""
 792
 793         AC_DEFUN([LN_CONFIG_O2IB_SRC], [
 794                 LN_SRC_O2IB_RDMA_CREATE_ID_4A
 795                 LN_SRC_O2IB_RDMA_CREATE_ID_5A
 796                 LN_SRC_O2IB_IB_CQ_INIT_ATTR
 797                 LN_SRC_O2IB_IB_ALLOC_FAST_REG_MR
 798                 LN_SRC_O2IB_IB_GET_DMA_MR
 799                 LN_SRC_O2IB_IB_RDMA_WR
 800                 LN_SRC_O2IB_IB_MAP_MR_SG_4A
 801                 LN_SRC_O2IB_IB_MAP_MR_SG_5A
 802                 LN_SRC_O2IB_IB_DEVICE_ATTRS
 803                 LN_SRC_O2IB_IB_ALLOC_PD
 804                 LN_SRC_O2IB_IB_INC_RKEY
 805                 LN_SRC_O2IB_IB_POST_SEND_CONST
 806                 LN_SRC_SANE_IB_DMA_MAP_SG
 807                 LN_SRC_O2IB_IB_DEVICE_OPS_EXISTS
 808                 LN_SRC_O2IB_IB_SG_DMA_ADDRESS_EXISTS
 809                 LN_SRC_O2IB_RDMA_REJECT
 810                 LN_SRC_O2IB_IB_FMR
 811                 LN_SRC_O2IB_RDMA_CONNECT_LOCKED
 812                 LN_SRC_O2IB_ETHTOOL_LINK_SETTINGS
 813         ])
 814         AC_DEFUN([LN_CONFIG_O2IB_RESULTS], [
 815                 LN_O2IB_RDMA_CREATE_ID_4A
 816                 LN_O2IB_RDMA_CREATE_ID_5A
 817                 LN_O2IB_IB_CQ_INIT_ATTR
 818                 LN_O2IB_IB_ALLOC_FAST_REG_MR
 819                 LN_O2IB_IB_GET_DMA_MR
 820                 LN_O2IB_IB_RDMA_WR
 821                 LN_O2IB_IB_MAP_MR_SG_4A
 822                 LN_O2IB_IB_MAP_MR_SG_5A
 823                 LN_O2IB_IB_DEVICE_ATTRS
 824                 LN_O2IB_IB_ALLOC_PD
 825                 LN_O2IB_IB_INC_RKEY
 826                 LN_O2IB_IB_POST_SEND_CONST
 827                 LN_SANE_IB_DMA_MAP_SG
 828                 LN_O2IB_IB_DEVICE_OPS_EXISTS
 829                 LN_O2IB_IB_SG_DMA_ADDRESS_EXISTS
 830                 LN_O2IB_RDMA_REJECT
 831                 LN_O2IB_IB_FMR
 832                 LN_O2IB_RDMA_CONNECT_LOCKED
 833                 LN_O2IB_ETHTOOL_LINK_SETTINGS
 834         ])
 835 ]) # ENABLEO2IB != "no"
 836 ]) # LN_CONFIG_O2IB
 837
 838 #
 839 # LN_CONFIG_GNILND
 840 #
 841 # check whether to use the Gemini Network Interface lnd
 842 #
 843 AC_DEFUN([LN_CONFIG_GNILND], [
 844 AC_MSG_CHECKING([whether to enable GNI lnd])
 845 AC_ARG_ENABLE([gni],
 846         AS_HELP_STRING([--enable-gni],
 847                 [enable GNI lnd]),
 848         [], [enable_gni="no"])
 849 AC_MSG_RESULT([$enable_gni])
 850
 851 AS_IF([test "x$enable_gni" = xyes], [
 852         # GNICPPFLAGS was set in spec file
 853         EXTRA_KCFLAGS_save="$EXTRA_KCFLAGS"
 854         EXTRA_KCFLAGS="$EXTRA_KCFLAGS $GNICPPFLAGS"
 855         LB_CHECK_COMPILE([if GNI kernel headers are present],
 856         GNI_header, [
 857                 #include <linux/types.h>
 858                 #include <gni_pub.h>
 859         ],[
 860                 gni_cdm_handle_t kgni_domain;
 861                 gni_return_t     rc;
 862                 int              rrc;
 863                 rc = gni_cdm_create(0, 1, 1, 0, &kgni_domain);
 864                 rrc = (rc == GNI_RC_SUCCESS) ? 0 : 1;
 865                 return rrc;
 866         ],[
 867                 GNILND="gnilnd"
 868         ],[
 869                 AC_MSG_ERROR([cannot compile gnilnd with given GNICPPFLAGS: $GNICPPFLAGS])
 870         ])
 871         # at this point, we have gnilnd basic support,
 872         # now check for extra features
 873         LB_CHECK_COMPILE([to use RCA in gnilnd],
 874         RCA_gnilnd, [
 875                 #include <linux/types.h>
 876                 #include <gni_pub.h>
 877                 #include <krca_lib.h>
 878         ],[
 879                 gni_cdm_handle_t kgni_domain;
 880                 gni_return_t     rc;
 881                 krca_ticket_t    ticket = KRCA_NULL_TICKET;
 882                 int              rrc;
 883                 __u32            nid = 0, nic_addr;
 884                 rc = gni_cdm_create(0, 1, 1, 0, &kgni_domain);
 885                 rrc = (rc == GNI_RC_SUCCESS) ? 0 : 1;
 886                 rrc += krca_nid_to_nicaddrs(nid, 1, &nic_addr);
 887                 rrc += krca_register(&ticket, RCA_MAKE_SERVICE_INDEX(RCA_IO_CLASS, 9), 99, 0);
 888                 return rrc;
 889         ],[
 890                 GNICPPFLAGS="$GNICPPFLAGS -DGNILND_USE_RCA=1"
 891         ])
 892         EXTRA_KCFLAGS="$EXTRA_KCFLAGS_save"
 893
 894         AC_SUBST(ENABLE_GNI, yes)
 895 ], [
 896         AC_SUBST(ENABLE_GNI, no)
 897 ])
 898 AC_SUBST(GNICPPFLAGS)
 899 AC_SUBST(GNILND)
 900 ]) # LN_CONFIG_GNILND
 901
 902 #
 903 # LN_CONFIG_KFILND
 904 #
 905 # check whether to use the kfabric Network Interface lnd
 906 #
 907 AC_DEFUN([LN_CONFIG_KFILND], [
 908 AC_ARG_WITH([kfi],
 909         AS_HELP_STRING([--with-kfi=<path>], [Kfabric build path for kfilnd]),
 910         [
 911                 AC_CHECK_FILE([$with_kfi/Module.symvers],
 912                 [
 913                         # KFICPPFLAGS was set in spec file
 914                         KFICPPFLAGS="-I$with_kfi/include"
 915                         EXTRA_KCFLAGS_save="$EXTRA_KCFLAGS"
 916                         EXTRA_KCFLAGS="$EXTRA_KCFLAGS $KFICPPFLAGS"
 917                         KBUILD_EXTRA_SYMBOLS="$KBUILD_EXTRA_SYMBOLS $with_kfi/Module.symvers"
 918                         LB_CHECK_COMPILE([if kfabric headers are present], KFI_header,
 919                         [
 920                                 #include <kfi_endpoint.h>
 921                         ],[
 922                                 struct kfi_info *hints;
 923                                 hints = kfi_allocinfo();
 924                         ],[
 925                                 KFILND="kfilnd"
 926                                 AC_MSG_NOTICE([adding $with_kfi/Module.symvers to Symbol Path])
 927                                 EXTRA_SYMBOLS="$EXTRA_SYMBOLS $with_kfi/Module.symvers"
 928                         ],[
 929                                 AC_MSG_ERROR([can't compile kfilnd with given KFICPPFLAGS: $KFICPPFLAGS])
 930                         ])
 931                 ],[
 932                         AC_MSG_ERROR(["$with_kfi/Module.symvers does not exist"])
 933                 ])
 934         ],[])
 935 AC_DEFINE(HAVE_KFILND, 1, [support kfabric LND])
 936 AC_SUBST(KFICPPFLAGS)
 937 AC_SUBST(KFILND)
 938 AC_SUBST(EXTRA_SYMBOLS)
 939 ]) # LN_CONFIG_KFILND
 940
 941 #
 942 # LN_CONFIG_SOCK_CREATE_KERN
 943 #
 944 # 4.x sock_create_kern() added a first parameter as 'struct net *'
 945 # instead of int.
 946 #
 947 AC_DEFUN([LN_SRC_CONFIG_SOCK_CREATE_KERN], [
 948         LB2_LINUX_TEST_SRC([sock_create_kern_net], [
 949                 #include <linux/net.h>
 950                 #include <net/net_namespace.h>
 951         ],[
 952                 sock_create_kern((struct net*)0, 0, 0, 0, NULL);
 953         ],[-Werror])
 954 ])
 955 AC_DEFUN([LN_CONFIG_SOCK_CREATE_KERN], [
 956         AC_MSG_CHECKING([if 'sock_create_kern' first parameter is net])
 957         LB2_LINUX_TEST_RESULT([sock_create_kern_net], [
 958                 AC_DEFINE(HAVE_SOCK_CREATE_KERN_USE_NET, 1,
 959                         [sock_create_kern use net as first parameter])
 960         ])
 961 ]) # LN_CONFIG_SOCK_CREATE_KERN
 962
 963 #
 964 # LN_CONFIG_SK_DATA_READY
 965 #
 966 # 3.15 for struct sock the *sk_data_ready() field only takes one argument now
 967 #
 968 AC_DEFUN([LN_SRC_CONFIG_SK_DATA_READY], [
 969         LB2_LINUX_TEST_SRC([sk_data_ready], [
 970                 #include <linux/net.h>
 971                 #include <net/sock.h>
 972         ],[
 973                 ((struct sock *)0)->sk_data_ready(NULL);
 974         ],[-Werror])
 975 ])
 976 AC_DEFUN([LN_CONFIG_SK_DATA_READY], [
 977         AC_MSG_CHECKING([if 'sk_data_ready' takes only one argument])
 978         LB2_LINUX_TEST_RESULT([sk_data_ready], [
 979         AC_DEFINE(HAVE_SK_DATA_READY_ONE_ARG, 1,
 980                 [sk_data_ready uses only one argument])
 981         ])
 982 ]) # LN_CONFIG_SK_DATA_READY
 983
 984 #
 985 # LN_EXPORT_KMAP_TO_PAGE
 986 #
 987 # 3.10 Export kmap_to_page
 988 #
 989 AC_DEFUN([LN_EXPORT_KMAP_TO_PAGE], [
 990 LB_CHECK_EXPORT([kmap_to_page], [mm/highmem.c],
 991         [AC_DEFINE(HAVE_KMAP_TO_PAGE, 1,
 992                 [kmap_to_page is exported by the kernel])])
 993 ]) # LN_EXPORT_KMAP_TO_PAGE
 994
 995 #
 996 # LN_HAVE_HYPERVISOR_IS_TYPE
 997 #
 998 # 4.14 commit 79cc74155218316b9a5d28577c7077b2adba8e58
 999 # x86/paravirt: Provide a way to check for hypervisors
1000 #
1001 AC_DEFUN([LN_SRC_HAVE_HYPERVISOR_IS_TYPE], [
1002         LB2_LINUX_TEST_SRC([hypervisor_is_type_exists], [
1003                 #include <asm/hypervisor.h>
1004         ],[
1005                 (void)hypervisor_is_type(X86_HYPER_NATIVE);
1006         ],[-Werror])
1007 ])
1008 AC_DEFUN([LN_HAVE_HYPERVISOR_IS_TYPE], [
1009         AC_MSG_CHECKING([if hypervisor_is_type function is available])
1010         LB2_LINUX_TEST_RESULT([hypervisor_is_type_exists], [
1011                 AC_DEFINE(HAVE_HYPERVISOR_IS_TYPE, 1,
1012                         [hypervisor_is_type function exists])
1013         ])
1014 ]) # LN_HAVE_HYPERVISOR_IS_TYPE
1015
1016 #
1017 # LN_HAVE_ORACLE_OFED_EXTENSIONS
1018 #
1019 # Oracle UEK 5
1020 #
1021 AC_DEFUN([LN_SRC_HAVE_ORACLE_OFED_EXTENSIONS], [
1022         LB2_LINUX_TEST_SRC([oracle_ofed_ext], [
1023                 #include <rdma/ib_fmr_pool.h>
1024         ],[
1025                 struct ib_fmr_pool_param param = {
1026                         .relaxed           = 0
1027                 };
1028                 (void)param;
1029         ],[
1030                 AC_DEFINE(HAVE_ORACLE_OFED_EXTENSIONS, 1,
1031                         [if Oracle OFED Extensions are enabled])
1032         ])
1033 ])
1034 AC_DEFUN([LN_HAVE_ORACLE_OFED_EXTENSIONS], [
1035         AC_MSG_CHECKING([if Oracle OFED Extensions are enabled])
1036         LB2_LINUX_TEST_RESULT([oracle_ofed_ext], [
1037                 AC_DEFINE(HAVE_ORACLE_OFED_EXTENSIONS, 1,
1038                         [if Oracle OFED Extensions are enabled])
1039         ])
1040 ]) # LN_HAVE_ORACLE_OFED_EXTENSIONS
1041
1042 #
1043 # LN_CONFIG_SOCK_GETNAME
1044 #
1045 # 4.17 commit 9b2c45d479d0fb8647c9e83359df69162b5fbe5f getname()
1046 # does not take the length *int argument and returns the length
1047 #
1048 AC_DEFUN([LN_SRC_CONFIG_SOCK_GETNAME], [
1049         LB2_LINUX_TEST_SRC([kern_sock_getname_2args], [
1050                 #include <linux/net.h>
1051         ],[
1052                 kernel_getsockname(NULL, NULL);
1053         ],[-Werror])
1054 ])
1055 AC_DEFUN([LN_CONFIG_SOCK_GETNAME], [
1056         AC_MSG_CHECKING([if 'getname' has two args])
1057         LB2_LINUX_TEST_RESULT([kern_sock_getname_2args], [
1058                 AC_DEFINE(HAVE_KERN_SOCK_GETNAME_2ARGS, 1,
1059                         ['getname' has two args])
1060         ])
1061 ]) # LN_CONFIG_SOCK_GETNAME
1062
1063 #
1064 # LN_HAVE_IN_DEV_FOR_EACH_IFA_RTNL
1065 #
1066 # kernel 5.3 commit ef11db3310e272d3d8dbe8739e0770820dd20e52
1067 # and kernel 4.18.0-193.el8:
1068 # added in_dev_for_each_ifa_rtnl and in_dev_for_each_ifa_rcu
1069 # and removed for_ifa and endfor_ifa.
1070 # Use the _rntl variant as the current locking is rtnl.
1071 #
1072 AC_DEFUN([LN_SRC_HAVE_IN_DEV_FOR_EACH_IFA_RTNL], [
1073         LB2_LINUX_TEST_SRC([in_dev_for_each_ifa_rtnl_test], [
1074                 #include <linux/inetdevice.h>
1075         ],[
1076                 const struct in_ifaddr *ifa = NULL;
1077                 struct in_device *in_dev = NULL;
1078
1079                 in_dev_for_each_ifa_rtnl(ifa, in_dev) {}
1080         ],[-Werror])
1081 ])
1082 AC_DEFUN([LN_HAVE_IN_DEV_FOR_EACH_IFA_RTNL], [
1083         AC_MSG_CHECKING([if 'in_dev_for_each_ifa_rtnl' is defined])
1084         LB2_LINUX_TEST_RESULT([in_dev_for_each_ifa_rtnl_test], [
1085                 AC_DEFINE(HAVE_IN_DEV_FOR_EACH_IFA_RTNL, 1,
1086                         ['in_dev_for_each_ifa_rtnl' is defined])
1087         ])
1088 ]) # LN_HAVE_IN_DEV_FOR_EACH_IFA_RTNL
1089
1090 #
1091 # LN_USR_RDMA
1092 #
1093 #
1094 AC_DEFUN([LN_USR_RDMA], [
1095 AC_MSG_CHECKING([if RDMA_PS_TCP exists])
1096 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1097         #include <rdma/rdma_user_cm.h>
1098
1099         int main(void) {
1100                 int x = (int)RDMA_PS_TCP;
1101                 return x;
1102         }
1103 ])],[
1104         AC_DEFINE(HAVE_USRSPC_RDMA_PS_TCP, 1,
1105                 [RDMA_PS_TCP exists])
1106 ])
1107 ]) # LN_USR_RDMA
1108
1109
1110 AC_DEFUN([LN_PROG_LINUX_SRC], [
1111         LN_CONFIG_O2IB_SRC
1112         # 3.15
1113         LN_SRC_CONFIG_SK_DATA_READY
1114         # 4.x
1115         LN_SRC_CONFIG_SOCK_CREATE_KERN
1116         # 4.14
1117         LN_SRC_HAVE_HYPERVISOR_IS_TYPE
1118         LN_SRC_HAVE_ORACLE_OFED_EXTENSIONS
1119         # 4.17
1120         LN_SRC_CONFIG_SOCK_GETNAME
1121         # 5.3 and 4.18.0-193.el8
1122         LN_SRC_HAVE_IN_DEV_FOR_EACH_IFA_RTNL
1123 ])
1124
1125 AC_DEFUN([LN_PROG_LINUX_RESULTS], [
1126         LN_CONFIG_O2IB_RESULTS
1127         # 3.15
1128         LN_CONFIG_SK_DATA_READY
1129         # 4.x
1130         LN_CONFIG_SOCK_CREATE_KERN
1131         # 4.14
1132         LN_HAVE_HYPERVISOR_IS_TYPE
1133         LN_HAVE_ORACLE_OFED_EXTENSIONS
1134         # 4.17
1135         LN_CONFIG_SOCK_GETNAME
1136         # 5.3 and 4.18.0-193.el8
1137         LN_HAVE_IN_DEV_FOR_EACH_IFA_RTNL
1138 ])
1139
1140 #
1141 # LN_PROG_LINUX
1142 #
1143 # LNet linux kernel checks
1144 #
1145 AC_DEFUN([LN_PROG_LINUX], [
1146 AC_MSG_NOTICE([LNet kernel checks
1147 ==============================================================================])
1148
1149 LN_CONFIG_BACKOFF
1150 LN_CONFIG_O2IB
1151 LN_CONFIG_GNILND
1152 LN_CONFIG_KFILND
1153 # 3.10 - Check export
1154 LN_EXPORT_KMAP_TO_PAGE
1155 ]) # LN_PROG_LINUX
1156
1157 #
1158 # LN_PATH_DEFAULTS
1159 #
1160 # default paths for installed files
1161 #
1162 AC_DEFUN([LN_PATH_DEFAULTS], [
1163 ]) # LN_PATH_DEFAULTS
1164
1165 #
1166 # LN_CONFIGURE
1167 #
1168 # other configure checks
1169 #
1170 AC_DEFUN([LN_CONFIGURE], [
1171 AC_MSG_NOTICE([LNet core checks
1172 ==============================================================================])
1173
1174 AC_ARG_WITH([cuda],
1175         AS_HELP_STRING([--with-cuda=path],
1176                         [Use a CUDA sources.]),
1177         [LB_ARG_CANON_PATH([cuda], [CUDA_PATH])],
1178         [CUDA_PATH=`ls -d1 /usr/src/nvidia-*/nvidia/ | tail -1`]
1179 )
1180
1181 AC_ARG_WITH([gds],
1182         AS_HELP_STRING([--with-gds=path],
1183                         [Use a gds sources.]),
1184         [LB_ARG_CANON_PATH([gds], [GDS_PATH])],
1185         [GDS_PATH=`ls -d1 /usr/src/nvidia-fs* | tail -1`]
1186 )
1187
1188 AS_IF([test -n "${CUDA_PATH}" && test -n "${GDS_PATH}"],[
1189 LB_CHECK_FILE([$CUDA_PATH/nv-p2p.h],
1190         [
1191         AC_MSG_RESULT([CUDA path is $CUDA_PATH])
1192         AC_SUBST(CUDA_PATH)
1193         ],
1194         [AC_MSG_ERROR([CUDA sources don't found. nv-p2p.h don't exit])]
1195 )
1196
1197 LB_CHECK_FILE([$GDS_PATH/nvfs-dma.h],
1198         [
1199         LB_CHECK_FILE([$GDS_PATH/config-host.h], [
1200         AC_MSG_RESULT([GDS path is $GDS_PATH])
1201         AC_SUBST(GDS_PATH)
1202         AC_DEFINE(WITH_GDS, 1, "GDS build enabled")
1203         ], [])
1204         ],
1205         [])
1206 ],[
1207         AC_MSG_WARN([CUDA or GDS sources not found. GDS support disabled])
1208 ]
1209 )
1210
1211 # lnet/utils/lnetconfig/liblnetconfig_netlink.c
1212 AS_IF([test "x$PKGCONF" = "x"],
1213         [AC_MSG_ERROR([pkg-config package is required to configure Lustre])])
1214
1215 AS_IF([test "x$enable_dist" = xno], [
1216         PKG_CHECK_MODULES(LIBNL3, [libnl-genl-3.0 >= 3.1])
1217 ])
1218
1219 AC_CHECK_LIB([nl-3], [nla_get_s32], [
1220         AC_DEFINE(HAVE_NLA_GET_S32, 1,
1221                 [libnl3 supports nla_get_s32])
1222         ], [
1223 ])
1224
1225 AC_CHECK_LIB([nl-3], [nla_get_s64], [
1226         AC_DEFINE(HAVE_NLA_GET_S64, 1,
1227                 [libnl3 supports nla_get_s64])
1228         ], [
1229 ])
1230
1231 #
1232 # LN_USR_NLMSGERR
1233 #
1234 AC_DEFUN([LN_USR_NLMSGERR], [
1235 AC_MSG_CHECKING([if 'enum nlmsgerr_attrs' exists])
1236 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1237         #include <linux/netlink.h>
1238
1239         int main(void) {
1240                 int x = (int)NLMSGERR_ATTR_MAX;
1241                 return x;
1242         }
1243 ])],[
1244         AC_DEFINE(HAVE_USRSPC_NLMSGERR, 1,
1245                 ['enum nlmsgerr_attrs' exists])
1246 ])
1247 ]) # LN_USR_NLMGSERR
1248
1249 # lnet/utils/portals.c
1250 AC_CHECK_HEADERS([netdb.h])
1251 AC_CHECK_FUNCS([gethostbyname])
1252
1253 # lnet/utils/wirecheck.c
1254 AC_CHECK_FUNCS([strnlen])
1255
1256 # --------  Check for required packages  --------------
1257
1258 AC_MSG_CHECKING([whether to enable 'efence' debugging support])
1259 AC_ARG_ENABLE(efence,
1260         AS_HELP_STRING([--enable-efence],
1261                 [use efence library]),
1262         [], [enable_efence="no"])
1263 AC_MSG_RESULT([$enable_efence])
1264
1265 LIBEFENCE=""
1266 AS_IF([test "$enable_efence" = yes], [
1267         LIBEFENCE="-lefence"
1268         AC_DEFINE(HAVE_LIBEFENCE, 1,
1269                 [libefence support is requested])
1270         AC_SUBST(ENABLE_EFENCE, yes)
1271 ], [
1272         AC_SUBST(ENABLE_EFENCE, no)
1273 ])
1274 AC_SUBST(LIBEFENCE)
1275
1276 LN_CONFIG_DLC
1277 LN_USR_RDMA
1278 LN_USR_NLMSGERR
1279 ]) # LN_CONFIGURE
1280
1281 #
1282 # LN_CONDITIONALS
1283 #
1284 # AM_CONDITIONAL defines for lnet
1285 #
1286 AC_DEFUN([LN_CONDITIONALS], [
1287 AM_CONDITIONAL(BUILD_O2IBLND,    test x$O2IBLND = "xo2iblnd")
1288 AM_CONDITIONAL(BUILD_GNILND,     test x$GNILND  = "xgnilnd")
1289 AM_CONDITIONAL(BUILD_KFILND,     test x$KFILND  = "xkfilnd")
1290 ]) # LN_CONDITIONALS
1291
1292 #
1293 # LN_CONFIG_FILES
1294 #
1295 # files that should be generated with AC_OUTPUT
1296 #
1297 AC_DEFUN([LN_CONFIG_FILES], [
1298 AC_CONFIG_FILES([
1299 lnet/Makefile
1300 lnet/autoMakefile
1301 lnet/autoconf/Makefile
1302 lnet/doc/Makefile
1303 lnet/include/Makefile
1304 lnet/include/lnet/Makefile
1305 lnet/include/uapi/linux/lnet/Makefile
1306 lnet/klnds/Makefile
1307 lnet/klnds/autoMakefile
1308 lnet/klnds/o2iblnd/Makefile
1309 lnet/klnds/o2iblnd/autoMakefile
1310 lnet/klnds/gnilnd/Makefile
1311 lnet/klnds/gnilnd/autoMakefile
1312 lnet/klnds/socklnd/Makefile
1313 lnet/klnds/socklnd/autoMakefile
1314 lnet/klnds/kfilnd/Makefile
1315 lnet/klnds/kfilnd/autoMakefile
1316 lnet/lnet/Makefile
1317 lnet/lnet/autoMakefile
1318 lnet/selftest/Makefile
1319 lnet/selftest/autoMakefile
1320 lnet/utils/Makefile
1321 lnet/utils/lnetconfig/Makefile
1322 ])
1323 ]) # LN_CONFIG_FILES