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         AC_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 $LINUX/include/linux/tcp.h | grep -q __u16 >/dev/null],
  18                         [AC_DEFINE(SOCKNAL_BACKOFF_MS, 1,
  19                                 [tunable backoff TCP in ms])])
  20         ], [
  21                 AC_MSG_RESULT([no])
  22         ])
  23 ])
  24 ]) # LN_CONFIG_BACKOFF
  25
  26 #
  27 # LN_CONFIG_DLC
  28 #
  29 # Configure dlc
  30 #
  31 # fail to build if libyaml is not installed
  32 #
  33 AC_DEFUN([LN_CONFIG_DLC], [
  34         AS_IF([test "x$enable_dist" = xno], [
  35                 AC_CHECK_LIB([yaml], [yaml_parser_initialize],
  36                              [LIBYAML="libyaml"],
  37                              [AC_MSG_ERROR([YAML development libraries not not installed])],
  38                              [-lm])
  39         ])
  40 ])
  41
  42 #
  43 # LN_CONFIG_O2IB
  44 #
  45 # If current OFED installed (assume with "ofed_info") and devel
  46 # headers are not found, error because we assume OFED infiniband
  47 # driver needs to be used and we must configure/build with it.
  48 # Current OFED headers detection mechanism allow for non-standard
  49 # prefix but relies on "ofed_info" command and on "%prefix/openib"
  50 # link (both are ok for 1.5.x and 3.x versions), and should work
  51 # for both source and DKMS builds.
  52 #
  53 AC_DEFUN([LN_CONFIG_O2IB], [
  54 AC_MSG_CHECKING([whether to use Compat RDMA])
  55 AC_ARG_WITH([o2ib],
  56         AC_HELP_STRING([--with-o2ib=[yes|no|<path>]],
  57                 [build o2iblnd against path]),
  58         [], [with_o2ib="yes"])
  59
  60 case $with_o2ib in
  61         yes)    AS_IF([which ofed_info 2>/dev/null], [
  62                         AS_IF([test x$uses_dpkg = xyes], [
  63                                 OFED_INFO="ofed_info | awk '{print \[$]2}'"
  64                                 LSPKG="dpkg --listfiles"
  65                         ], [
  66                                 OFED_INFO="ofed_info"
  67                                 LSPKG="rpm -ql"
  68                         ])
  69                         O2IBPATHS=$(eval $OFED_INFO | egrep -w 'mlnx-ofed-kernel-dkms|mlnx-ofa_kernel-devel|compat-rdma-devel|kernel-ib-devel|ofa_kernel-devel' | xargs $LSPKG | grep '\(/openib\|/ofa_kernel/default\|/ofa_kernel\)$' | head -n1)
  70                         AS_IF([test -z "$O2IBPATHS"], [
  71                                 AC_MSG_ERROR([
  72 You seem to have an OFED installed but have not installed it's devel package.
  73 If you still want to build Lustre for your OFED I/B stack, you need to install its devel headers RPM.
  74 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.
  75                                              ])
  76                         ])
  77                         AS_IF([test $(echo $O2IBPATHS | wc -w) -ge 2], [
  78                                 AC_MSG_ERROR([
  79 It appears that you have multiple OFED versions installed.
  80 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.
  81 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.
  82                                              ])
  83                         ])
  84                         if test -e $O2IBPATHS/${LINUXRELEASE}; then
  85                             O2IBPATHS=$O2IBPATHS/${LINUXRELEASE}
  86                         elif test -e $O2IBPATHS/default; then
  87                             O2IBPATHS=$O2IBPATHS/default
  88                         fi
  89                         OFED="yes"
  90                 ], [
  91                         O2IBPATHS="$LINUX $LINUX/drivers/infiniband"
  92                 ])
  93                 ENABLEO2IB="yes"
  94                 ;;
  95         no)     ENABLEO2IB="no"
  96                 ;;
  97         *)      O2IBPATHS=$with_o2ib
  98                 ENABLEO2IB="withpath"
  99                 OFED="yes"
 100                 ;;
 101 esac
 102
 103 AS_IF([test $ENABLEO2IB = "no"], [
 104         AC_MSG_RESULT([no])
 105 ], [
 106         o2ib_found=false
 107         for O2IBPATH in $O2IBPATHS; do
 108                 AS_IF([test \( -f ${O2IBPATH}/include/rdma/rdma_cm.h -a \
 109                            -f ${O2IBPATH}/include/rdma/ib_cm.h -a \
 110                            -f ${O2IBPATH}/include/rdma/ib_verbs.h -a \
 111                            -f ${O2IBPATH}/include/rdma/ib_fmr_pool.h \)], [
 112                         o2ib_found=true
 113                         break
 114                 ])
 115         done
 116         if ! $o2ib_found; then
 117                 AC_MSG_RESULT([no])
 118                 case $ENABLEO2IB in
 119                         "yes") AC_MSG_ERROR([no OFED nor kernel OpenIB gen2 headers present]) ;;
 120                         "withpath") AC_MSG_ERROR([bad --with-o2ib path]) ;;
 121                         *) AC_MSG_ERROR([internal error]) ;;
 122                 esac
 123         else
 124                 COMPAT_AUTOCONF=""
 125                 compatrdma_found=false
 126                 if test -f ${O2IBPATH}/include/linux/compat-2.6.h; then
 127                         AC_MSG_RESULT([yes])
 128                         compatrdma_found=true
 129                         AC_DEFINE(HAVE_COMPAT_RDMA, 1, [compat rdma found])
 130                         EXTRA_OFED_CONFIG="$EXTRA_OFED_CONFIG -include ${O2IBPATH}/include/linux/compat-2.6.h"
 131                         if test -f "$O2IBPATH/include/linux/compat_autoconf.h"; then
 132                                 COMPAT_AUTOCONF="$O2IBPATH/include/linux/compat_autoconf.h"
 133                         fi
 134                 else
 135                         AC_MSG_RESULT([no])
 136                 fi
 137                 if ! $compatrdma_found; then
 138                         if test -f "$O2IBPATH/config.mk"; then
 139                                 . "$O2IBPATH/config.mk"
 140                         elif test -f "$O2IBPATH/ofed_patch.mk"; then
 141                                 . "$O2IBPATH/ofed_patch.mk"
 142                         fi
 143                 elif test -z "$COMPAT_AUTOCONF"; then
 144                         # Depreciated checks
 145                         if test "x$RHEL_KERNEL" = xyes; then
 146                                 RHEL_MAJOR=$(awk '/ RHEL_MAJOR / { print [$]3 }' $LINUX_OBJ/include/$VERSION_HDIR/version.h)
 147                                 I=$(awk '/ RHEL_MINOR / { print [$]3 }' $LINUX_OBJ/include/$VERSION_HDIR/version.h)
 148                                 while test "$I" -ge 0; do
 149                                         EXTRA_OFED_INCLUDE="$EXTRA_OFED_INCLUDE -DCONFIG_COMPAT_RHEL_${RHEL_MAJOR}_$I"
 150                                         I=$(($I-1))
 151                                 done
 152                         elif test "x$SUSE_KERNEL" = xyes; then
 153                                 SP=$(grep PATCHLEVEL /etc/SuSE-release | sed -e 's/.*= *//')
 154                                 EXTRA_OFED_INCLUDE="$EXTRA_OFED_INCLUDE -DCONFIG_COMPAT_SLES_11_$SP"
 155                         fi
 156                 fi
 157
 158                 AC_MSG_CHECKING([whether to use any OFED backport headers])
 159                 if test -n "$BACKPORT_INCLUDES"; then
 160                         AC_MSG_RESULT([yes])
 161                         OFED_BACKPORT_PATH="$O2IBPATH/${BACKPORT_INCLUDES/*\/kernel_addons/kernel_addons}/"
 162                         EXTRA_OFED_INCLUDE="-I$OFED_BACKPORT_PATH $EXTRA_OFED_INCLUDE"
 163                 else
 164                         AC_MSG_RESULT([no])
 165                 fi
 166
 167                 O2IBLND=""
 168                 O2IBPATH=$(readlink --canonicalize $O2IBPATH)
 169                 EXTRA_OFED_INCLUDE="$EXTRA_OFED_INCLUDE -I$O2IBPATH/include -I$O2IBPATH/include/uapi"
 170                 EXTRA_CHECK_INCLUDE="$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE"
 171                 LB_CHECK_COMPILE([whether to enable OpenIB gen2 support],
 172                 openib_gen2_support, [
 173                         #ifdef HAVE_COMPAT_RDMA
 174                         #undef PACKAGE_NAME
 175                         #undef PACKAGE_TARNAME
 176                         #undef PACKAGE_VERSION
 177                         #undef PACKAGE_STRING
 178                         #undef PACKAGE_BUGREPORT
 179                         #undef PACKAGE_URL
 180                         #include <linux/compat-2.6.h>
 181                         #endif
 182                         #include <linux/version.h>
 183                         #include <linux/pci.h>
 184                         #include <linux/gfp.h>
 185                         #include <rdma/rdma_cm.h>
 186                         #include <rdma/ib_cm.h>
 187                         #include <rdma/ib_verbs.h>
 188                         #include <rdma/ib_fmr_pool.h>
 189                 ],[
 190                         struct rdma_cm_id      *cm_idi __attribute__ ((unused));
 191                         struct rdma_conn_param  conn_param __attribute__ ((unused));
 192                         struct ib_device_attr   device_attr __attribute__ ((unused));
 193                         struct ib_qp_attr       qp_attr __attribute__ ((unused));
 194                         struct ib_pool_fmr      pool_fmr __attribute__ ((unused));
 195                         enum   ib_cm_rej_reason rej_reason __attribute__ ((unused));
 196                         rdma_destroy_id(NULL);
 197                 ],[
 198                         O2IBLND="o2iblnd"
 199                 ],[
 200                         case $ENABLEO2IB in
 201                         "yes") AC_MSG_ERROR([can't compile with OpenIB gen2 headers]) ;;
 202                         "withpath") AC_MSG_ERROR([can't compile with OpenIB gen2 headers under $O2IBPATH]) ;;
 203                         *) AC_MSG_ERROR([internal error]) ;;
 204                         esac
 205                 ])
 206                 # we know at this point that the found OFED source is good
 207                 O2IB_SYMVER=""
 208                 if test $ENABLEO2IB = "withpath" -o "x$OFED" = "xyes" ; then
 209                         if test -f $O2IBPATH/Module.symvers; then
 210                                 O2IB_SYMVER=$O2IBPATH/Module.symvers;
 211                                 break;
 212                         fi
 213                         if test -n "$O2IB_SYMVER"; then
 214                                 AC_MSG_NOTICE([adding $O2IB_SYMVER to Symbol Path])
 215                                 EXTRA_SYMBOLS="$EXTRA_SYMBOLS $O2IB_SYMVER"
 216                                 AC_SUBST(EXTRA_SYMBOLS)
 217                         else
 218                                 AC_MSG_ERROR([an external source tree was, either specified or detected, for o2iblnd however I could not find a $O2IBPATH/Module.symvers there])
 219                         fi
 220                 fi
 221
 222                 LB_CHECK_COMPILE([if Linux kernel has kthread_worker],
 223                 linux_kthread_worker, [
 224                         #ifdef HAVE_COMPAT_RDMA
 225                         #undef PACKAGE_NAME
 226                         #undef PACKAGE_TARNAME
 227                         #undef PACKAGE_VERSION
 228                         #undef PACKAGE_STRING
 229                         #undef PACKAGE_BUGREPORT
 230                         #undef PACKAGE_URL
 231                         #include <linux/compat-2.6.h>
 232                         #endif
 233                         #include <linux/kthread.h>
 234                 ],[
 235                         struct kthread_work *kth_wrk = NULL;
 236                         flush_kthread_work(kth_wrk);
 237                 ],[
 238                         AC_DEFINE(HAVE_KTHREAD_WORK, 1, [kthread_worker found])
 239                         if test -z "$COMPAT_AUTOCONF"; then
 240                                 EXTRA_OFED_INCLUDE="$EXTRA_OFED_INCLUDE -DCONFIG_COMPAT_IS_KTHREAD"
 241                         fi
 242                 ])
 243                 EXTRA_CHECK_INCLUDE=""
 244         fi
 245 ])
 246 AC_SUBST(EXTRA_OFED_CONFIG)
 247 AC_SUBST(EXTRA_OFED_INCLUDE)
 248 AC_SUBST(O2IBLND)
 249 AC_SUBST(O2IBPATH)
 250 AC_SUBST(ENABLEO2IB)
 251
 252 AS_IF([test $ENABLEO2IB != "no"], [
 253         EXTRA_CHECK_INCLUDE="$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE"
 254
 255         # In RHEL 6.2, rdma_create_id() takes the queue-pair type as a fourth argument
 256         LB_CHECK_COMPILE([if 'rdma_create_id' wants four args],
 257         rdma_create_id_4args, [
 258                 #ifdef HAVE_COMPAT_RDMA
 259                 #undef PACKAGE_NAME
 260                 #undef PACKAGE_TARNAME
 261                 #undef PACKAGE_VERSION
 262                 #undef PACKAGE_STRING
 263                 #undef PACKAGE_BUGREPORT
 264                 #undef PACKAGE_URL
 265                 #include <linux/compat-2.6.h>
 266                 #endif
 267                 #include <rdma/rdma_cm.h>
 268         ],[
 269                 rdma_create_id(NULL, NULL, 0, 0);
 270         ],[
 271                 AC_DEFINE(HAVE_RDMA_CREATE_ID_4ARG, 1,
 272                         [rdma_create_id wants 4 args])
 273         ])
 274
 275         # 4.4 added network namespace parameter for rdma_create_id()
 276         LB_CHECK_COMPILE([if 'rdma_create_id' wants five args],
 277         rdma_create_id_5args, [
 278                 #ifdef HAVE_COMPAT_RDMA
 279                 #undef PACKAGE_NAME
 280                 #undef PACKAGE_TARNAME
 281                 #undef PACKAGE_VERSION
 282                 #undef PACKAGE_STRING
 283                 #undef PACKAGE_BUGREPORT
 284                 #undef PACKAGE_URL
 285                 #include <linux/compat-2.6.h>
 286                 #endif
 287                 #include <rdma/rdma_cm.h>
 288         ],[
 289                 rdma_create_id(NULL, NULL, NULL, 0, 0);
 290         ],[
 291                 AC_DEFINE(HAVE_RDMA_CREATE_ID_5ARG, 1,
 292                         [rdma_create_id wants 5 args])
 293         ])
 294
 295         # 4.2 introduced struct ib_cq_init_attr which is used
 296         # by ib_create_cq(). Note some OFED stacks only keep
 297         # their headers in sync with latest kernels but not
 298         # the functionality which means for infiniband testing
 299         # we need to always test functionality testings.
 300         LB_CHECK_COMPILE([if 'struct ib_cq_init_attr' is used],
 301         ib_cq_init_attr, [
 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/ib_verbs.h>
 312         ],[
 313                 struct ib_cq_init_attr cq_attr;
 314
 315                 ib_create_cq(NULL, NULL, NULL, NULL, &cq_attr);
 316         ],[
 317                 AC_DEFINE(HAVE_IB_CQ_INIT_ATTR, 1,
 318                         [struct ib_cq_init_attr is used by ib_create_cq])
 319         ])
 320
 321         # 4.3 removed ib_alloc_fast_reg_mr()
 322         LB_CHECK_COMPILE([if 'ib_alloc_fast_reg_mr' exists],
 323         ib_alloc_fast_reg_mr, [
 324                 #ifdef HAVE_COMPAT_RDMA
 325                 #undef PACKAGE_NAME
 326                 #undef PACKAGE_TARNAME
 327                 #undef PACKAGE_VERSION
 328                 #undef PACKAGE_STRING
 329                 #undef PACKAGE_BUGREPORT
 330                 #undef PACKAGE_URL
 331                 #include <linux/compat-2.6.h>
 332                 #endif
 333                 #include <rdma/ib_verbs.h>
 334         ],[
 335                 ib_alloc_fast_reg_mr(NULL, 0);
 336         ],[
 337                 AC_DEFINE(HAVE_IB_ALLOC_FAST_REG_MR, 1,
 338                         [ib_alloc_fast_reg_mr is defined])
 339         ])
 340
 341         # 4.9 must stop using ib_get_dma_mr and the global MR
 342         # We then have to use FMR/Fastreg for all RDMA.
 343         LB_CHECK_COMPILE([if 'ib_get_dma_mr' exists],
 344         ib_get_dma_mr, [
 345                 #ifdef HAVE_COMPAT_RDMA
 346                 #undef PACKAGE_NAME
 347                 #undef PACKAGE_TARNAME
 348                 #undef PACKAGE_VERSION
 349                 #undef PACKAGE_STRING
 350                 #undef PACKAGE_BUGREPORT
 351                 #undef PACKAGE_URL
 352                 #include <linux/compat-2.6.h>
 353                 #endif
 354                 #include <rdma/ib_verbs.h>
 355         ],[
 356                 ib_get_dma_mr(NULL, 0);
 357         ],[
 358                 AC_DEFINE(HAVE_IB_GET_DMA_MR, 1,
 359                         [ib_get_dma_mr is defined])
 360         ])
 361
 362         # In v4.4 Linux kernel,
 363         # commit e622f2f4ad2142d2a613a57fb85f8cf737935ef5
 364         # split up struct ib_send_wr so that all non-trivial verbs
 365         # use their own structure which embedds struct ib_send_wr.
 366         LB_CHECK_COMPILE([if 'struct ib_rdma_wr' is defined],
 367         ib_rdma_wr, [
 368                 #ifdef HAVE_COMPAT_RDMA
 369                 #undef PACKAGE_NAME
 370                 #undef PACKAGE_TARNAME
 371                 #undef PACKAGE_VERSION
 372                 #undef PACKAGE_STRING
 373                 #undef PACKAGE_BUGREPORT
 374                 #undef PACKAGE_URL
 375                 #include <linux/compat-2.6.h>
 376                 #endif
 377                 #include <rdma/ib_verbs.h>
 378         ],[
 379                 struct ib_rdma_wr *wr __attribute__ ((unused));
 380
 381                 wr = rdma_wr(NULL);
 382         ],[
 383                 AC_DEFINE(HAVE_IB_RDMA_WR, 1,
 384                         [struct ib_rdma_wr is defined])
 385         ])
 386
 387         # new fast registration API introduced in 4.4
 388         LB_CHECK_COMPILE([if 4arg 'ib_map_mr_sg' exists],
 389         ib_map_mr_sg_4args, [
 390                 #ifdef HAVE_COMPAT_RDMA
 391                 #undef PACKAGE_NAME
 392                 #undef PACKAGE_TARNAME
 393                 #undef PACKAGE_VERSION
 394                 #undef PACKAGE_STRING
 395                 #undef PACKAGE_BUGREPORT
 396                 #undef PACKAGE_URL
 397                 #include <linux/compat-2.6.h>
 398                 #endif
 399                 #include <rdma/ib_verbs.h>
 400         ],[
 401                 ib_map_mr_sg(NULL, NULL, 0, 0);
 402         ],[
 403                 AC_DEFINE(HAVE_IB_MAP_MR_SG, 1,
 404                         [ib_map_mr_sg exists])
 405         ])
 406
 407         # ib_map_mr_sg changes from 4 to 5 args (adding sg_offset_p)
 408         # in kernel 4.7 (and RHEL 7.3)
 409         LB_CHECK_COMPILE([if 5arg 'ib_map_mr_sg' exists],
 410         ib_map_mr_sg_5args, [
 411                 #ifdef HAVE_COMPAT_RDMA
 412                 #undef PACKAGE_NAME
 413                 #undef PACKAGE_TARNAME
 414                 #undef PACKAGE_VERSION
 415                 #undef PACKAGE_STRING
 416                 #undef PACKAGE_BUGREPORT
 417                 #undef PACKAGE_URL
 418                 #include <linux/compat-2.6.h>
 419                 #endif
 420                 #include <rdma/ib_verbs.h>
 421         ],[
 422                 ib_map_mr_sg(NULL, NULL, 0, NULL, 0);
 423         ],[
 424                 AC_DEFINE(HAVE_IB_MAP_MR_SG, 1,
 425                         [ib_map_mr_sg exists])
 426                 AC_DEFINE(HAVE_IB_MAP_MR_SG_5ARGS, 1,
 427                         [ib_map_mr_sg has 5 arguments])
 428         ])
 429
 430         # ib_query_device() removed in 4.5
 431         LB_CHECK_COMPILE([if 'struct ib_device' has member 'attrs'],
 432         ib_device.attrs, [
 433                 #ifdef HAVE_COMPAT_RDMA
 434                 #undef PACKAGE_NAME
 435                 #undef PACKAGE_TARNAME
 436                 #undef PACKAGE_VERSION
 437                 #undef PACKAGE_STRING
 438                 #undef PACKAGE_BUGREPORT
 439                 #undef PACKAGE_URL
 440                 #include <linux/compat-2.6.h>
 441                 #endif
 442                 #include <rdma/ib_verbs.h>
 443         ],[
 444                 struct ib_device dev;
 445                 struct ib_device_attr dev_attr = {};
 446                 dev.attrs = dev_attr;
 447         ],[
 448                 AC_DEFINE(HAVE_IB_DEVICE_ATTRS, 1,
 449                         [struct ib_device.attrs is defined])
 450         ])
 451
 452         # A flags argument was added to ib_alloc_pd() in Linux 4.9,
 453         # commit ed082d36a7b2c27d1cda55fdfb28af18040c4a89
 454         LB_CHECK_COMPILE([if 2arg 'ib_alloc_pd' exists],
 455         ib_alloc_pd, [
 456                 #ifdef HAVE_COMPAT_RDMA
 457                 #undef PACKAGE_NAME
 458                 #undef PACKAGE_TARNAME
 459                 #undef PACKAGE_VERSION
 460                 #undef PACKAGE_STRING
 461                 #undef PACKAGE_BUGREPORT
 462                 #undef PACKAGE_URL
 463                 #include <linux/compat-2.6.h>
 464                 #endif
 465                 #include <rdma/ib_verbs.h>
 466         ],[
 467                 ib_alloc_pd(NULL, 0);
 468         ],[
 469                 AC_DEFINE(HAVE_IB_ALLOC_PD_2ARGS, 1,
 470                         [ib_alloc_pd has 2 arguments])
 471         ])
 472
 473         LB_CHECK_COMPILE([if function 'ib_inc_rkey' is defined],
 474         ib_inc_rkey, [
 475                 #ifdef HAVE_COMPAT_RDMA
 476                 #undef PACKAGE_NAME
 477                 #undef PACKAGE_TARNAME
 478                 #undef PACKAGE_VERSION
 479                 #undef PACKAGE_STRING
 480                 #undef PACKAGE_BUGREPORT
 481                 #undef PACKAGE_URL
 482                 #include <linux/compat-2.6.h>
 483                 #endif
 484                 #include <rdma/ib_verbs.h>
 485         ],[
 486                 (void)ib_inc_rkey(0);
 487         ],[
 488                 AC_DEFINE(HAVE_IB_INC_RKEY, 1,
 489                           [function ib_inc_rkey exist])
 490         ])
 491
 492         # In MOFED 4.6, the second and third parameters for
 493         # ib_post_send() and ib_post_recv() are declared with
 494         # 'const'.
 495         tmp_flags="$EXTRA_KCFLAGS"
 496         EXTRA_KCFLAGS="-Werror"
 497         LB_CHECK_COMPILE([if 'ib_post_send() and ib_post_recv()' have const parameters],
 498         ib_post_send_recv_const, [
 499                 #ifdef HAVE_COMPAT_RDMA
 500                 #undef PACKAGE_NAME
 501                 #undef PACKAGE_TARNAME
 502                 #undef PACKAGE_VERSION
 503                 #undef PACKAGE_STRING
 504                 #undef PACKAGE_BUGREPORT
 505                 #undef PACKAGE_URL
 506                 #include <linux/compat-2.6.h>
 507                 #endif
 508                 #include <rdma/ib_verbs.h>
 509         ],[
 510                 ib_post_send(NULL, (const struct ib_send_wr *)NULL,
 511                              (const struct ib_send_wr **)NULL);
 512         ],[
 513                 AC_DEFINE(HAVE_IB_POST_SEND_RECV_CONST, 1,
 514                         [ib_post_send and ib_post_recv have const parameters])
 515         ])
 516         EXTRA_KCFLAGS="$tmp_flags"
 517
 518         # 5.0
 519         LN_IB_DEVICE_OPS_EXISTS
 520         # 5.1
 521         LN_IB_SG_DMA_ADDRESS_EXISTS
 522
 523         EXTRA_CHECK_INCLUDE=""
 524 ]) # ENABLEO2IB != "no"
 525 ]) # LN_CONFIG_O2IB
 526
 527 #
 528 # LN_CONFIG_GNILND
 529 #
 530 # check whether to use the Gemini Network Interface lnd
 531 #
 532 AC_DEFUN([LN_CONFIG_GNILND], [
 533 AC_MSG_CHECKING([whether to enable GNI lnd])
 534 AC_ARG_ENABLE([gni],
 535         AC_HELP_STRING([--enable-gni],
 536                 [enable GNI lnd]),
 537         [], [enable_gni="no"])
 538 AC_MSG_RESULT([$enable_gni])
 539
 540 AS_IF([test "x$enable_gni" = xyes], [
 541         # GNICPPFLAGS was set in spec file
 542         EXTRA_KCFLAGS_save="$EXTRA_KCFLAGS"
 543         EXTRA_KCFLAGS="$EXTRA_KCFLAGS $GNICPPFLAGS"
 544         LB_CHECK_COMPILE([if GNI kernel headers are present],
 545         GNI_header, [
 546                 #include <linux/types.h>
 547                 #include <gni_pub.h>
 548         ],[
 549                 gni_cdm_handle_t kgni_domain;
 550                 gni_return_t     rc;
 551                 int              rrc;
 552                 rc = gni_cdm_create(0, 1, 1, 0, &kgni_domain);
 553                 rrc = (rc == GNI_RC_SUCCESS) ? 0 : 1;
 554                 return rrc;
 555         ],[
 556                 GNILND="gnilnd"
 557         ],[
 558                 AC_MSG_ERROR([can't compile gnilnd with given GNICPPFLAGS: $GNICPPFLAGS])
 559         ])
 560         # at this point, we have gnilnd basic support,
 561         # now check for extra features
 562         LB_CHECK_COMPILE([to use RCA in gnilnd],
 563         RCA_gnilnd, [
 564                 #include <linux/types.h>
 565                 #include <gni_pub.h>
 566                 #include <krca_lib.h>
 567         ],[
 568                 gni_cdm_handle_t kgni_domain;
 569                 gni_return_t     rc;
 570                 krca_ticket_t    ticket = KRCA_NULL_TICKET;
 571                 int              rrc;
 572                 __u32            nid = 0, nic_addr;
 573                 rc = gni_cdm_create(0, 1, 1, 0, &kgni_domain);
 574                 rrc = (rc == GNI_RC_SUCCESS) ? 0 : 1;
 575                 rrc += krca_nid_to_nicaddrs(nid, 1, &nic_addr);
 576                 rrc += krca_register(&ticket, RCA_MAKE_SERVICE_INDEX(RCA_IO_CLASS, 9), 99, 0);
 577                 return rrc;
 578         ],[
 579                 GNICPPFLAGS="$GNICPPFLAGS -DGNILND_USE_RCA=1"
 580         ])
 581         EXTRA_KCFLAGS="$EXTRA_KCFLAGS_save"
 582 ])
 583 AC_SUBST(GNICPPFLAGS)
 584 AC_SUBST(GNILND)
 585 ]) # LN_CONFIG_GNILND
 586
 587 # LN_CONFIG_SOCK_CREATE_KERN
 588 #
 589 # 4.x sock_create_kern() added a first parameter as 'struct net *'
 590 # instead of int.
 591 #
 592 AC_DEFUN([LN_CONFIG_SOCK_CREATE_KERN], [
 593 tmp_flags="$EXTRA_KCFLAGS"
 594 EXTRA_KCFLAGS="-Werror"
 595 LB_CHECK_COMPILE([if 'sock_create_kern' first parameter is net],
 596 sock_create_kern_net, [
 597         #include <linux/net.h>
 598         #include <net/net_namespace.h>
 599 ],[
 600         sock_create_kern((struct net*)0, 0, 0, 0, NULL);
 601 ],[
 602         AC_DEFINE(HAVE_SOCK_CREATE_KERN_USE_NET, 1,
 603                 [sock_create_kern use net as first parameter])
 604 ])
 605 EXTRA_KCFLAGS="$tmp_flags"
 606 ]) # LN_CONFIG_SOCK_CREATE_KERN
 607
 608 #
 609 # LN_CONFIG_SK_DATA_READY
 610 #
 611 # 3.15 for struct sock the *sk_data_ready() field only takes one argument now
 612 #
 613 AC_DEFUN([LN_CONFIG_SK_DATA_READY], [
 614 tmp_flags="$EXTRA_KCFLAGS"
 615 EXTRA_KCFLAGS="-Werror"
 616 LB_CHECK_COMPILE([if 'sk_data_ready' takes only one argument],
 617 sk_data_ready, [
 618         #include <linux/net.h>
 619         #include <net/sock.h>
 620 ],[
 621         ((struct sock *)0)->sk_data_ready(NULL);
 622 ],[
 623         AC_DEFINE(HAVE_SK_DATA_READY_ONE_ARG, 1,
 624                 [sk_data_ready uses only one argument])
 625 ])
 626 EXTRA_KCFLAGS="$tmp_flags"
 627 ]) # LN_CONFIG_SK_DATA_READY
 628
 629 #
 630 # LN_EXPORT_KMAP_TO_PAGE
 631 #
 632 # 3.10 Export kmap_to_page
 633 #
 634 AC_DEFUN([LN_EXPORT_KMAP_TO_PAGE], [
 635 LB_CHECK_EXPORT([kmap_to_page], [mm/highmem.c],
 636         [AC_DEFINE(HAVE_KMAP_TO_PAGE, 1,
 637                 [kmap_to_page is exported by the kernel])])
 638 ]) # LN_EXPORT_KMAP_TO_PAG
 639
 640 #
 641 # LN_HAVE_ORACLE_OFED_EXTENSIONS
 642 #
 643 # Oracle UEK 5
 644 #
 645 AC_DEFUN([LN_HAVE_ORACLE_OFED_EXTENSIONS], [
 646 LB_CHECK_COMPILE([if Oracle OFED Extensions are enabled],
 647 oracle_ofed_ext, [
 648         #include <rdma/ib_fmr_pool.h>
 649 ],[
 650         struct ib_fmr_pool_param param = {
 651                 .relaxed           = 0
 652         };
 653         (void)param;
 654 ],[
 655         AC_DEFINE(HAVE_ORACLE_OFED_EXTENSIONS, 1,
 656                 [if Oracle OFED Extensions are enabled])
 657 ])
 658 ]) # LN_HAVE_ORACLE_OFED_EXTENSIONS
 659
 660 #
 661 # LN_CONFIG_SOCK_GETNAME
 662 #
 663 # 4.17 commit 9b2c45d479d0fb8647c9e83359df69162b5fbe5f getname()
 664 # does not take the length *int argument and returns the length
 665 #
 666 AC_DEFUN([LN_CONFIG_SOCK_GETNAME], [
 667 tmp_flags="$EXTRA_KCFLAGS"
 668 EXTRA_KCFLAGS="-Werror"
 669 LB_CHECK_COMPILE([if 'getname' has two args],
 670 kern_sock_getname_2args, [
 671         #include <linux/net.h>
 672 ],[
 673         kernel_getsockname(NULL, NULL);
 674 ],[
 675         AC_DEFINE(HAVE_KERN_SOCK_GETNAME_2ARGS, 1,
 676                 ['getname' has two args])
 677 ])
 678 EXTRA_KCFLAGS="$tmp_flags"
 679 ]) # LN_CONFIG_SOCK_GETNAME
 680
 681 #
 682 # LN_IB_DEVICE_OPS_EXISTS
 683 #
 684 # kernel 5.0 commit 521ed0d92ab0db3edd17a5f4716b7f698f4fce61
 685 # RDMA/core: Introduce ib_device_ops
 686 # ... introduces the ib_device_ops structure that defines all the
 687 # InfiniBand device operations in one place ...
 688 #
 689 AC_DEFUN([LN_IB_DEVICE_OPS_EXISTS], [
 690 tmp_flags="$EXTRA_KCFLAGS"
 691 EXTRA_KCFLAGS="-Werror"
 692 LB_CHECK_COMPILE([if struct ib_device_ops is defined],
 693 ib_device_ops_test, [
 694         #include <rdma/ib_verbs.h>
 695 ],[
 696         int x = offsetof(struct ib_device_ops, unmap_fmr);
 697         x = x;
 698         (void)x;
 699 ],[
 700         AC_DEFINE(HAVE_IB_DEVICE_OPS, 1,
 701                 [if struct ib_device_ops is defined])
 702 ])
 703 EXTRA_KCFLAGS="$tmp_flags"
 704 ]) # LN_IB_DEVICE_OPS_EXISTS
 705
 706 #
 707 # LN_IB_SG_DMA_ADDRESS_EXISTS
 708 #
 709 # kernel 5.1 commit a163afc88556e099271a7b423295bc5176fcecce
 710 # IB/core: Remove ib_sg_dma_address() and ib_sg_dma_len()
 711 # ... when dma_ops existed (3.6) ib_sg_dma_address() was not trivial ...
 712 #
 713 AC_DEFUN([LN_IB_SG_DMA_ADDRESS_EXISTS], [
 714 tmp_flags="$EXTRA_KCFLAGS"
 715 EXTRA_KCFLAGS="-Werror"
 716 LB_CHECK_COMPILE([if ib_sg_dma_address wrapper exists],
 717 ib_sg_dma_address_test, [
 718         #include <rdma/ib_verbs.h>
 719 ],[
 720         u64 x = ib_sg_dma_address(NULL, NULL);
 721         x = x;
 722         (void)x;
 723 ],[
 724         AC_DEFINE(HAVE_IB_SG_DMA_ADDRESS, 1,
 725                 [if ib_sg_dma_address wrapper exists])
 726 ])
 727 EXTRA_KCFLAGS="$tmp_flags"
 728 ]) # LN_IB_SG_DMA_ADDRESS_EXISTS
 729
 730 #
 731 # LN_PROG_LINUX
 732 #
 733 # LNet linux kernel checks
 734 #
 735 AC_DEFUN([LN_PROG_LINUX], [
 736 AC_MSG_NOTICE([LNet kernel checks
 737 ==============================================================================])
 738
 739 LN_CONFIG_BACKOFF
 740 LN_CONFIG_O2IB
 741 LN_CONFIG_GNILND
 742 # 3.10
 743 LN_EXPORT_KMAP_TO_PAGE
 744 # 3.15
 745 LN_CONFIG_SK_DATA_READY
 746 # 4.x
 747 LN_CONFIG_SOCK_CREATE_KERN
 748 # 4.14
 749 LN_HAVE_ORACLE_OFED_EXTENSIONS
 750 # 4.17
 751 LN_CONFIG_SOCK_GETNAME
 752 ]) # LN_PROG_LINUX
 753
 754 #
 755 # LN_PATH_DEFAULTS
 756 #
 757 # default paths for installed files
 758 #
 759 AC_DEFUN([LN_PATH_DEFAULTS], [
 760 ]) # LN_PATH_DEFAULTS
 761
 762 #
 763 # LN_CONFIGURE
 764 #
 765 # other configure checks
 766 #
 767 AC_DEFUN([LN_CONFIGURE], [
 768 AC_MSG_NOTICE([LNet core checks
 769 ==============================================================================])
 770
 771 # lnet/utils/portals.c
 772 AC_CHECK_HEADERS([netdb.h])
 773 AC_CHECK_FUNCS([gethostbyname])
 774
 775 # lnet/utils/wirecheck.c
 776 AC_CHECK_FUNCS([strnlen])
 777
 778 # --------  Check for required packages  --------------
 779
 780 AC_MSG_CHECKING([whether to enable 'efence' debugging support])
 781 AC_ARG_ENABLE(efence,
 782         AC_HELP_STRING([--enable-efence],
 783                 [use efence library]),
 784         [], [enable_efence="no"])
 785 AC_MSG_RESULT([$enable_efence])
 786
 787 LIBEFENCE=""
 788 AS_IF([test "$enable_efence" = yes], [
 789         LIBEFENCE="-lefence"
 790         AC_DEFINE(HAVE_LIBEFENCE, 1,
 791                 [libefence support is requested])
 792 ])
 793 AC_SUBST(LIBEFENCE)
 794
 795 LN_CONFIG_DLC
 796 ]) # LN_CONFIGURE
 797
 798 #
 799 # LN_CONDITIONALS
 800 #
 801 # AM_CONDITIONAL defines for lnet
 802 #
 803 AC_DEFUN([LN_CONDITIONALS], [
 804 AM_CONDITIONAL(BUILD_O2IBLND,    test x$O2IBLND = "xo2iblnd")
 805 AM_CONDITIONAL(BUILD_GNILND,     test x$GNILND  = "xgnilnd")
 806 ]) # LN_CONDITIONALS
 807
 808 #
 809 # LN_CONFIG_FILES
 810 #
 811 # files that should be generated with AC_OUTPUT
 812 #
 813 AC_DEFUN([LN_CONFIG_FILES], [
 814 AC_CONFIG_FILES([
 815 lnet/Makefile
 816 lnet/autoMakefile
 817 lnet/autoconf/Makefile
 818 lnet/doc/Makefile
 819 lnet/include/Makefile
 820 lnet/include/lnet/Makefile
 821 lnet/include/uapi/linux/lnet/Makefile
 822 lnet/klnds/Makefile
 823 lnet/klnds/autoMakefile
 824 lnet/klnds/o2iblnd/Makefile
 825 lnet/klnds/o2iblnd/autoMakefile
 826 lnet/klnds/gnilnd/Makefile
 827 lnet/klnds/gnilnd/autoMakefile
 828 lnet/klnds/socklnd/Makefile
 829 lnet/klnds/socklnd/autoMakefile
 830 lnet/lnet/Makefile
 831 lnet/lnet/autoMakefile
 832 lnet/selftest/Makefile
 833 lnet/selftest/autoMakefile
 834 lnet/utils/Makefile
 835 lnet/utils/lnetconfig/Makefile
 836 ])
 837 ]) # LN_CONFIG_FILES