lnet/autoconf/lustre-lnet.m4

   1 #
   2 # LN_CONFIG_MAX_PAYLOAD
   3 #
   4 # configure maximum payload
   5 #
   6 AC_DEFUN([LN_CONFIG_MAX_PAYLOAD], [
   7 AC_MSG_CHECKING([for non-default maximum LNET payload])
   8 AC_ARG_WITH([max-payload-mb],
   9         AC_HELP_STRING([--with-max-payload-mb=MBytes],
  10                 [set maximum lnet payload in MBytes]),
  11         [
  12                 AC_MSG_RESULT([$with_max_payload_mb])
  13                 CONFIG_LNET_MAX_PAYLOAD_MB=$with_max_payload_mb
  14                 CONFIG_LNET_MAX_PAYLOAD="(($with_max_payload_mb)<<20)"
  15         ], [
  16                 AC_MSG_RESULT([no])
  17                 CONFIG_LNET_MAX_PAYLOAD="LNET_MTU"
  18         ])
  19 AC_DEFINE_UNQUOTED(CONFIG_LNET_MAX_PAYLOAD, $CONFIG_LNET_MAX_PAYLOAD,
  20         [Max LNET payload])
  21 ]) # LN_CONFIG_MAX_PAYLOAD
  22
  23 #
  24 # LN_CHECK_GCC_VERSION
  25 #
  26 # Check compiler version
  27 #
  28 AC_DEFUN([LN_CHECK_GCC_VERSION], [
  29 AC_MSG_CHECKING([compiler version])
  30 PTL_CC_VERSION=`$CC --version | awk '/^gcc/{print $ 3}'`
  31 PTL_MIN_CC_VERSION="3.2.2"
  32 v2n() {
  33         awk -F. '{printf "%d\n", (($ 1)*100+($ 2))*100+($ 3)}'
  34 }
  35 if test -z "$PTL_CC_VERSION" -o \
  36         $(echo $PTL_CC_VERSION | v2n) -ge $(echo $PTL_MIN_CC_VERSION | v2n); then
  37         AC_MSG_RESULT([ok])
  38 else
  39         AC_MSG_RESULT([Buggy compiler found])
  40         AC_MSG_ERROR([Need gcc version >= $PTL_MIN_CC_VERSION])
  41 fi
  42 ]) # LN_CHECK_GCC_VERSION
  43
  44 #
  45 # LN_CONFIG_AFFINITY
  46 #
  47 # check if cpu affinity is available/wanted
  48 #
  49 AC_DEFUN([LN_CONFIG_AFFINITY], [
  50 AC_MSG_CHECKING([whether to enable CPU affinity support])
  51 AC_ARG_ENABLE([affinity],
  52         AC_HELP_STRING([--disable-affinity],
  53                 [disable process/irq affinity]),
  54         [], [enable_affinity="yes"])
  55 AC_MSG_RESULT([$enable_affinity])
  56 AS_IF([test "x$enable_affinity" = xyes], [
  57         LB_CHECK_COMPILE([if Linux kernel has cpu affinity support],
  58         set_cpus_allowed_ptr, [
  59                 #include <linux/sched.h>
  60         ],[
  61                 struct task_struct *t;
  62                 #if HAVE_CPUMASK_T
  63                 cpumask_t     m;
  64                 #else
  65                 unsigned long m;
  66                 #endif
  67                 set_cpus_allowed_ptr(t, &m);
  68         ],[
  69                 AC_DEFINE(CPU_AFFINITY, 1,
  70                         [kernel has cpu affinity support])
  71         ])
  72 ])
  73 ]) # LN_CONFIG_AFFINITY
  74
  75 #
  76 # LN_CONFIG_BACKOFF
  77 #
  78 # check if tunable tcp backoff is available/wanted
  79 #
  80 AC_DEFUN([LN_CONFIG_BACKOFF], [
  81 AC_MSG_CHECKING([whether to enable tunable backoff TCP support])
  82 AC_ARG_ENABLE([backoff],
  83         AC_HELP_STRING([--disable-backoff],
  84                 [disable socknal tunable backoff]),
  85         [], [enable_backoff="yes"])
  86 AC_MSG_RESULT([$enable_backoff])
  87 AS_IF([test "x$enable_backoff" = xyes], [
  88         AC_MSG_CHECKING([if Linux kernel has tunable backoff TCP support])
  89         AS_IF([grep -c TCP_BACKOFF $LINUX/include/linux/tcp.h >/dev/null], [
  90                 AC_MSG_RESULT([yes])
  91                 AC_DEFINE(SOCKNAL_BACKOFF, 1, [use tunable backoff TCP])
  92                 AS_IF([grep rto_max $LINUX/include/linux/tcp.h | grep -q __u16 >/dev/null],
  93                         [AC_DEFINE(SOCKNAL_BACKOFF_MS, 1,
  94                                 [tunable backoff TCP in ms])])
  95         ], [
  96                 AC_MSG_RESULT([no])
  97         ])
  98 ])
  99 ]) # LN_CONFIG_BACKOFF
 100
 101 #
 102 # LN_CONFIG_DLC
 103 #
 104 # Configure dlc
 105 #
 106 # fail to build if libyaml is not installed
 107 #
 108 AC_DEFUN([LN_CONFIG_DLC], [
 109         AC_CHECK_LIB([yaml], [yaml_parser_initialize],
 110                      [LIBYAML="libyaml"],
 111                      [AC_MSG_ERROR([YAML development libraries not not installed])],
 112                      [-lm])
 113 ])
 114
 115 #
 116 # LN_CONFIG_O2IB
 117 #
 118 # If current OFED installed (assume with "ofed_info") and devel
 119 # headers are not found, error because we assume OFED infiniband
 120 # driver needs to be used and we must configure/build with it.
 121 # Current OFED headers detection mechanism allow for non-standard
 122 # prefix but relies on "ofed_info" command and on "%prefix/openib"
 123 # link (both are ok for 1.5.x and 3.x versions), and should work
 124 # for both source and DKMS builds.
 125 #
 126 AC_DEFUN([LN_CONFIG_O2IB], [
 127 AC_MSG_CHECKING([whether to use Compat RDMA])
 128 AC_ARG_WITH([o2ib],
 129         AC_HELP_STRING([--with-o2ib=[yes|no|<path>]],
 130                 [build o2iblnd against path]),
 131         [], [with_o2ib="yes"])
 132
 133 case $with_o2ib in
 134         yes)    AS_IF([which ofed_info 2>/dev/null], [
 135                         AS_IF([test x$uses_dpkg = xyes], [
 136                                 OFED_INFO="ofed_info | awk '{print \[$]2}'"
 137                                 LSPKG="dpkg --listfiles"
 138                         ], [
 139                                 OFED_INFO="ofed_info"
 140                                 LSPKG="rpm -ql"
 141                         ])
 142                         O2IBPATHS=$(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 '\(/openib\|/ofa_kernel/default\)$' | head -n1)
 143                         AS_IF([test -z "$O2IBPATHS"], [
 144                                 AC_MSG_ERROR([
 145 You seem to have an OFED installed but have not installed it's devel package.
 146 If you still want to build Lustre for your OFED I/B stack, you need to install its devel headers RPM.
 147 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.
 148                                              ])
 149                         ])
 150                         AS_IF([test $(echo $O2IBPATHS | wc -w) -ge 2], [
 151                                 AC_MSG_ERROR([
 152 It appears that you have multiple OFED versions installed.
 153 If you still want to build Lustre for your OFED I/B stack, you need to install a single version with its devel headers RPM.
 154 Instead, if you want to build Lustre for your kernel's built-in I/B stack rather than your installed OFED stack, either remove the OFED package(s) or use --with-o2ib=no.
 155                                              ])
 156                         ])
 157                         OFED="yes"
 158                 ], [
 159                         O2IBPATHS="$LINUX $LINUX/drivers/infiniband"
 160                 ])
 161                 ENABLEO2IB="yes"
 162                 ;;
 163         no)     ENABLEO2IB="no"
 164                 ;;
 165         *)      O2IBPATHS=$with_o2ib
 166                 ENABLEO2IB="withpath"
 167                 OFED="yes"
 168                 ;;
 169 esac
 170
 171 AS_IF([test $ENABLEO2IB = "no"], [
 172         AC_MSG_RESULT([no])
 173 ], [
 174         o2ib_found=false
 175         for O2IBPATH in $O2IBPATHS; do
 176                 AS_IF([test \( -f ${O2IBPATH}/include/rdma/rdma_cm.h -a \
 177                            -f ${O2IBPATH}/include/rdma/ib_cm.h -a \
 178                            -f ${O2IBPATH}/include/rdma/ib_verbs.h -a \
 179                            -f ${O2IBPATH}/include/rdma/ib_fmr_pool.h \)], [
 180                         o2ib_found=true
 181                         break
 182                 ])
 183         done
 184         if ! $o2ib_found; then
 185                 AC_MSG_RESULT([no])
 186                 case $ENABLEO2IB in
 187                         "yes") AC_MSG_ERROR([no OFED nor kernel OpenIB gen2 headers present]) ;;
 188                         "withpath") AC_MSG_ERROR([bad --with-o2ib path]) ;;
 189                         *) AC_MSG_ERROR([internal error]) ;;
 190                 esac
 191         else
 192                 COMPAT_AUTOCONF=""
 193                 compatrdma_found=false
 194                 if test -f ${O2IBPATH}/include/linux/compat-2.6.h; then
 195                         AC_MSG_RESULT([yes])
 196                         compatrdma_found=true
 197                         AC_DEFINE(HAVE_COMPAT_RDMA, 1, [compat rdma found])
 198                         EXTRA_OFED_CONFIG="$EXTRA_OFED_CONFIG -include ${O2IBPATH}/include/linux/compat-2.6.h"
 199                         if test -f "$O2IBPATH/include/linux/compat_autoconf.h"; then
 200                                 COMPAT_AUTOCONF="$O2IBPATH/include/linux/compat_autoconf.h"
 201                         fi
 202                 else
 203                         AC_MSG_RESULT([no])
 204                 fi
 205                 if ! $compatrdma_found; then
 206                         if test -f "$O2IBPATH/config.mk"; then
 207                                 . "$O2IBPATH/config.mk"
 208                         elif test -f "$O2IBPATH/ofed_patch.mk"; then
 209                                 . "$O2IBPATH/ofed_patch.mk"
 210                         fi
 211                 elif test -z "$COMPAT_AUTOCONF"; then
 212                         # Depreciated checks
 213                         if test "x$RHEL_KERNEL" = xyes; then
 214                                 RHEL_MAJOR=$(awk '/ RHEL_MAJOR / { print [$]3 }' $LINUX_OBJ/include/$VERSION_HDIR/version.h)
 215                                 I=$(awk '/ RHEL_MINOR / { print [$]3 }' $LINUX_OBJ/include/$VERSION_HDIR/version.h)
 216                                 while test "$I" -ge 0; do
 217                                         EXTRA_OFED_INCLUDE="$EXTRA_OFED_INCLUDE -DCONFIG_COMPAT_RHEL_${RHEL_MAJOR}_$I"
 218                                         I=$(($I-1))
 219                                 done
 220                         elif test "x$SUSE_KERNEL" = xyes; then
 221                                 SP=$(grep PATCHLEVEL /etc/SuSE-release | sed -e 's/.*= *//')
 222                                 EXTRA_OFED_INCLUDE="$EXTRA_OFED_INCLUDE -DCONFIG_COMPAT_SLES_11_$SP"
 223                         fi
 224                 fi
 225
 226                 AC_MSG_CHECKING([whether to use any OFED backport headers])
 227                 if test -n "$BACKPORT_INCLUDES"; then
 228                         AC_MSG_RESULT([yes])
 229                         OFED_BACKPORT_PATH="$O2IBPATH/${BACKPORT_INCLUDES/*\/kernel_addons/kernel_addons}/"
 230                         EXTRA_OFED_INCLUDE="-I$OFED_BACKPORT_PATH $EXTRA_OFED_INCLUDE"
 231                 else
 232                         AC_MSG_RESULT([no])
 233                 fi
 234
 235                 O2IBLND=""
 236                 O2IBPATH=$(readlink --canonicalize $O2IBPATH)
 237                 EXTRA_OFED_INCLUDE="$EXTRA_OFED_INCLUDE -I$O2IBPATH/include -I$O2IBPATH/include/uapi"
 238                 EXTRA_CHECK_INCLUDE="$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE"
 239                 LB_CHECK_COMPILE([whether to enable OpenIB gen2 support],
 240                 openib_gen2_support, [
 241                         #ifdef HAVE_COMPAT_RDMA
 242                         #undef PACKAGE_NAME
 243                         #undef PACKAGE_TARNAME
 244                         #undef PACKAGE_VERSION
 245                         #undef PACKAGE_STRING
 246                         #undef PACKAGE_BUGREPORT
 247                         #undef PACKAGE_URL
 248                         #include <linux/compat-2.6.h>
 249                         #endif
 250                         #include <linux/version.h>
 251                         #include <linux/pci.h>
 252                         #include <linux/gfp.h>
 253                         #include <rdma/rdma_cm.h>
 254                         #include <rdma/ib_cm.h>
 255                         #include <rdma/ib_verbs.h>
 256                         #include <rdma/ib_fmr_pool.h>
 257                 ],[
 258                         struct rdma_cm_id      *cm_idi __attribute__ ((unused));
 259                         struct rdma_conn_param  conn_param __attribute__ ((unused));
 260                         struct ib_device_attr   device_attr __attribute__ ((unused));
 261                         struct ib_qp_attr       qp_attr __attribute__ ((unused));
 262                         struct ib_pool_fmr      pool_fmr __attribute__ ((unused));
 263                         enum   ib_cm_rej_reason rej_reason __attribute__ ((unused));
 264                         rdma_destroy_id(NULL);
 265                 ],[
 266                         O2IBLND="o2iblnd"
 267                 ],[
 268                         case $ENABLEO2IB in
 269                         "yes") AC_MSG_ERROR([can't compile with OpenIB gen2 headers]) ;;
 270                         "withpath") AC_MSG_ERROR([can't compile with OpenIB gen2 headers under $O2IBPATH]) ;;
 271                         *) AC_MSG_ERROR([internal error]) ;;
 272                         esac
 273                 ])
 274                 # we know at this point that the found OFED source is good
 275                 O2IB_SYMVER=""
 276                 if test $ENABLEO2IB = "withpath" -o "x$OFED" = "xyes" ; then
 277                         # OFED default rpm not handle sles10 Modules.symvers name
 278                         for name in Module.symvers Modules.symvers; do
 279                                 if test -f $O2IBPATH/$name; then
 280                                         O2IB_SYMVER=$name;
 281                                         break;
 282                                 fi
 283                         done
 284                         if test -n "$O2IB_SYMVER"; then
 285                                 AC_MSG_NOTICE([adding $O2IBPATH/$O2IB_SYMVER to Symbol Path])
 286                                 EXTRA_SYMBOLS="$EXTRA_SYMBOLS $O2IBPATH/$O2IB_SYMVER"
 287                                 AC_SUBST(EXTRA_SYMBOLS)
 288                         else
 289                                 AC_MSG_ERROR([an external source tree was, either specified or detected, for o2iblnd however I could not find a $O2IBPATH/Module.symvers there])
 290                         fi
 291                 fi
 292
 293                 LB_CHECK_COMPILE([if Linux kernel has kthread_worker],
 294                 linux_kthread_worker, [
 295                         #ifdef HAVE_COMPAT_RDMA
 296                         #undef PACKAGE_NAME
 297                         #undef PACKAGE_TARNAME
 298                         #undef PACKAGE_VERSION
 299                         #undef PACKAGE_STRING
 300                         #undef PACKAGE_BUGREPORT
 301                         #undef PACKAGE_URL
 302                         #include <linux/compat-2.6.h>
 303                         #endif
 304                         #include <linux/kthread.h>
 305                 ],[
 306                         struct kthread_work     *kth_wrk __attribute__ ((unused));
 307                         flush_kthread_work(kth_wrk);
 308                 ],[
 309                         AC_DEFINE(HAVE_KTHREAD_WORK, 1, [kthread_worker found])
 310                         if test -z "$COMPAT_AUTOCONF"; then
 311                                 EXTRA_OFED_INCLUDE="$EXTRA_OFED_INCLUDE -DCONFIG_COMPAT_IS_KTHREAD"
 312                         fi
 313                 ])
 314                 EXTRA_CHECK_INCLUDE=""
 315         fi
 316 ])
 317 AC_SUBST(EXTRA_OFED_CONFIG)
 318 AC_SUBST(EXTRA_OFED_INCLUDE)
 319 AC_SUBST(O2IBLND)
 320 AC_SUBST(O2IBPATH)
 321 AC_SUBST(ENABLEO2IB)
 322
 323 AS_IF([test $ENABLEO2IB != "no"], [
 324         EXTRA_CHECK_INCLUDE="$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE"
 325
 326         # In RHEL 6.2, rdma_create_id() takes the queue-pair type as a fourth argument
 327         LB_CHECK_COMPILE([if 'rdma_create_id' wants four args],
 328         rdma_create_id_4args, [
 329                 #ifdef HAVE_COMPAT_RDMA
 330                 #undef PACKAGE_NAME
 331                 #undef PACKAGE_TARNAME
 332                 #undef PACKAGE_VERSION
 333                 #undef PACKAGE_STRING
 334                 #undef PACKAGE_BUGREPORT
 335                 #undef PACKAGE_URL
 336                 #include <linux/compat-2.6.h>
 337                 #endif
 338                 #include <rdma/rdma_cm.h>
 339         ],[
 340                 rdma_create_id(NULL, NULL, 0, 0);
 341         ],[
 342                 AC_DEFINE(HAVE_RDMA_CREATE_ID_4ARG, 1,
 343                         [rdma_create_id wants 4 args])
 344         ])
 345
 346         # 4.4 added network namespace parameter for rdma_create_id()
 347         LB_CHECK_COMPILE([if 'rdma_create_id' wants five args],
 348         rdma_create_id_5args, [
 349                 #ifdef HAVE_COMPAT_RDMA
 350                 #undef PACKAGE_NAME
 351                 #undef PACKAGE_TARNAME
 352                 #undef PACKAGE_VERSION
 353                 #undef PACKAGE_STRING
 354                 #undef PACKAGE_BUGREPORT
 355                 #undef PACKAGE_URL
 356                 #include <linux/compat-2.6.h>
 357                 #endif
 358                 #include <rdma/rdma_cm.h>
 359         ],[
 360                 rdma_create_id(NULL, NULL, NULL, 0, 0);
 361         ],[
 362                 AC_DEFINE(HAVE_RDMA_CREATE_ID_5ARG, 1,
 363                         [rdma_create_id wants 5 args])
 364         ])
 365
 366         # 4.2 introduced struct ib_cq_init_attr which is used
 367         # by ib_create_cq(). Note some OFED stacks only keep
 368         # their headers in sync with latest kernels but not
 369         # the functionality which means for infiniband testing
 370         # we need to always test functionality testings.
 371         LB_CHECK_COMPILE([if 'struct ib_cq_init_attr' is used],
 372         ib_cq_init_attr, [
 373                 #ifdef HAVE_COMPAT_RDMA
 374                 #undef PACKAGE_NAME
 375                 #undef PACKAGE_TARNAME
 376                 #undef PACKAGE_VERSION
 377                 #undef PACKAGE_STRING
 378                 #undef PACKAGE_BUGREPORT
 379                 #undef PACKAGE_URL
 380                 #include <linux/compat-2.6.h>
 381                 #endif
 382                 #include <rdma/ib_verbs.h>
 383         ],[
 384                 struct ib_cq_init_attr cq_attr;
 385
 386                 ib_create_cq(NULL, NULL, NULL, NULL, &cq_attr);
 387         ],[
 388                 AC_DEFINE(HAVE_IB_CQ_INIT_ATTR, 1,
 389                         [struct ib_cq_init_attr is used by ib_create_cq])
 390         ])
 391
 392         # 4.3 removed ib_alloc_fast_reg_mr()
 393         LB_CHECK_COMPILE([if 'ib_alloc_fast_reg_mr' exists],
 394         ib_alloc_fast_reg_mr, [
 395                 #ifdef HAVE_COMPAT_RDMA
 396                 #undef PACKAGE_NAME
 397                 #undef PACKAGE_TARNAME
 398                 #undef PACKAGE_VERSION
 399                 #undef PACKAGE_STRING
 400                 #undef PACKAGE_BUGREPORT
 401                 #undef PACKAGE_URL
 402                 #include <linux/compat-2.6.h>
 403                 #endif
 404                 #include <rdma/ib_verbs.h>
 405         ],[
 406                 ib_alloc_fast_reg_mr(NULL, 0);
 407         ],[
 408                 AC_DEFINE(HAVE_IB_ALLOC_FAST_REG_MR, 1,
 409                         [ib_alloc_fast_reg_mr is defined])
 410         ])
 411
 412         # 4.9 must stop using ib_get_dma_mr and the global MR
 413         # We then have to use FMR/Fastreg for all RDMA.
 414         LB_CHECK_COMPILE([if 'ib_get_dma_mr' exists],
 415         ib_get_dma_mr, [
 416                 #ifdef HAVE_COMPAT_RDMA
 417                 #undef PACKAGE_NAME
 418                 #undef PACKAGE_TARNAME
 419                 #undef PACKAGE_VERSION
 420                 #undef PACKAGE_STRING
 421                 #undef PACKAGE_BUGREPORT
 422                 #undef PACKAGE_URL
 423                 #include <linux/compat-2.6.h>
 424                 #endif
 425                 #include <rdma/ib_verbs.h>
 426         ],[
 427                 ib_get_dma_mr(NULL, 0);
 428         ],[
 429                 AC_DEFINE(HAVE_IB_GET_DMA_MR, 1,
 430                         [ib_get_dma_mr is defined])
 431         ])
 432
 433         # In v4.4 Linux kernel,
 434         # commit e622f2f4ad2142d2a613a57fb85f8cf737935ef5
 435         # split up struct ib_send_wr so that all non-trivial verbs
 436         # use their own structure which embedds struct ib_send_wr.
 437         LB_CHECK_COMPILE([if 'struct ib_rdma_wr' is defined],
 438         ib_rdma_wr, [
 439                 #ifdef HAVE_COMPAT_RDMA
 440                 #undef PACKAGE_NAME
 441                 #undef PACKAGE_TARNAME
 442                 #undef PACKAGE_VERSION
 443                 #undef PACKAGE_STRING
 444                 #undef PACKAGE_BUGREPORT
 445                 #undef PACKAGE_URL
 446                 #include <linux/compat-2.6.h>
 447                 #endif
 448                 #include <rdma/ib_verbs.h>
 449         ],[
 450                 struct ib_rdma_wr *wr __attribute__ ((unused));
 451
 452                 wr = rdma_wr(NULL);
 453         ],[
 454                 AC_DEFINE(HAVE_IB_RDMA_WR, 1,
 455                         [struct ib_rdma_wr is defined])
 456         ])
 457
 458         # new fast registration API introduced in 4.4
 459         LB_CHECK_COMPILE([if 4arg 'ib_map_mr_sg' exists],
 460         ib_map_mr_sg_4args, [
 461                 #ifdef HAVE_COMPAT_RDMA
 462                 #undef PACKAGE_NAME
 463                 #undef PACKAGE_TARNAME
 464                 #undef PACKAGE_VERSION
 465                 #undef PACKAGE_STRING
 466                 #undef PACKAGE_BUGREPORT
 467                 #undef PACKAGE_URL
 468                 #include <linux/compat-2.6.h>
 469                 #endif
 470                 #include <rdma/ib_verbs.h>
 471         ],[
 472                 ib_map_mr_sg(NULL, NULL, 0, 0);
 473         ],[
 474                 AC_DEFINE(HAVE_IB_MAP_MR_SG, 1,
 475                         [ib_map_mr_sg exists])
 476         ])
 477
 478         # ib_map_mr_sg changes from 4 to 5 args (adding sg_offset_p)
 479         # in kernel 4.7 (and RHEL 7.3)
 480         LB_CHECK_COMPILE([if 5arg 'ib_map_mr_sg' exists],
 481         ib_map_mr_sg_5args, [
 482                 #ifdef HAVE_COMPAT_RDMA
 483                 #undef PACKAGE_NAME
 484                 #undef PACKAGE_TARNAME
 485                 #undef PACKAGE_VERSION
 486                 #undef PACKAGE_STRING
 487                 #undef PACKAGE_BUGREPORT
 488                 #undef PACKAGE_URL
 489                 #include <linux/compat-2.6.h>
 490                 #endif
 491                 #include <rdma/ib_verbs.h>
 492         ],[
 493                 ib_map_mr_sg(NULL, NULL, 0, NULL, 0);
 494         ],[
 495                 AC_DEFINE(HAVE_IB_MAP_MR_SG, 1,
 496                         [ib_map_mr_sg exists])
 497                 AC_DEFINE(HAVE_IB_MAP_MR_SG_5ARGS, 1,
 498                         [ib_map_mr_sg has 5 arguments])
 499         ])
 500
 501         # ib_query_device() removed in 4.5
 502         LB_CHECK_COMPILE([if 'struct ib_device' has member 'attrs'],
 503         ib_device.attrs, [
 504                 #ifdef HAVE_COMPAT_RDMA
 505                 #undef PACKAGE_NAME
 506                 #undef PACKAGE_TARNAME
 507                 #undef PACKAGE_VERSION
 508                 #undef PACKAGE_STRING
 509                 #undef PACKAGE_BUGREPORT
 510                 #undef PACKAGE_URL
 511                 #include <linux/compat-2.6.h>
 512                 #endif
 513                 #include <rdma/ib_verbs.h>
 514         ],[
 515                 struct ib_device dev;
 516                 struct ib_device_attr dev_attr = {};
 517                 dev.attrs = dev_attr;
 518         ],[
 519                 AC_DEFINE(HAVE_IB_DEVICE_ATTRS, 1,
 520                         [struct ib_device.attrs is defined])
 521         ])
 522
 523         # A flags argument was added to ib_alloc_pd() in Linux 4.9,
 524         # commit ed082d36a7b2c27d1cda55fdfb28af18040c4a89
 525         LB_CHECK_COMPILE([if 2arg 'ib_alloc_pd' exists],
 526         ib_alloc_pd, [
 527                 #ifdef HAVE_COMPAT_RDMA
 528                 #undef PACKAGE_NAME
 529                 #undef PACKAGE_TARNAME
 530                 #undef PACKAGE_VERSION
 531                 #undef PACKAGE_STRING
 532                 #undef PACKAGE_BUGREPORT
 533                 #undef PACKAGE_URL
 534                 #include <linux/compat-2.6.h>
 535                 #endif
 536                 #include <rdma/ib_verbs.h>
 537         ],[
 538                 ib_alloc_pd(NULL, 0);
 539         ],[
 540                 AC_DEFINE(HAVE_IB_ALLOC_PD_2ARGS, 1,
 541                         [ib_alloc_pd has 2 arguments])
 542         ])
 543
 544         LB_CHECK_COMPILE([if function 'ib_inc_rkey' is defined],
 545         ib_inc_rkey, [
 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                 (void)ib_inc_rkey(0);
 558         ],[
 559                 AC_DEFINE(HAVE_IB_INC_RKEY, 1,
 560                           [function ib_inc_rkey exist])
 561         ])
 562
 563         EXTRA_CHECK_INCLUDE=""
 564 ]) # ENABLEO2IB != "no"
 565 ]) # LN_CONFIG_O2IB
 566
 567 #
 568 # LN_CONFIG_GNILND
 569 #
 570 # check whether to use the Gemini Network Interface lnd
 571 #
 572 AC_DEFUN([LN_CONFIG_GNILND], [
 573 AC_MSG_CHECKING([whether to enable GNI lnd])
 574 AC_ARG_ENABLE([gni],
 575         AC_HELP_STRING([--enable-gni],
 576                 [enable GNI lnd]),
 577         [], [enable_gni="no"])
 578 AC_MSG_RESULT([$enable_gni])
 579
 580 AS_IF([test "x$enable_gni" = xyes], [
 581         # GNICPPFLAGS was set in spec file
 582         EXTRA_KCFLAGS_save="$EXTRA_KCFLAGS"
 583         EXTRA_KCFLAGS="$EXTRA_KCFLAGS $GNICPPFLAGS"
 584         LB_CHECK_COMPILE([if GNI kernel headers are present],
 585         GNI_header, [
 586                 #include <linux/types.h>
 587                 #include <gni_pub.h>
 588         ],[
 589                 gni_cdm_handle_t kgni_domain;
 590                 gni_return_t     rc;
 591                 int              rrc;
 592                 rc = gni_cdm_create(0, 1, 1, 0, &kgni_domain);
 593                 rrc = (rc == GNI_RC_SUCCESS) ? 0 : 1;
 594                 return rrc;
 595         ],[
 596                 GNILND="gnilnd"
 597         ],[
 598                 AC_MSG_ERROR([can't compile gnilnd with given GNICPPFLAGS: $GNICPPFLAGS])
 599         ])
 600         # at this point, we have gnilnd basic support,
 601         # now check for extra features
 602         LB_CHECK_COMPILE([to use RCA in gnilnd],
 603         RCA_gnilnd, [
 604                 #include <linux/types.h>
 605                 #include <gni_pub.h>
 606                 #include <krca_lib.h>
 607         ],[
 608                 gni_cdm_handle_t kgni_domain;
 609                 gni_return_t     rc;
 610                 krca_ticket_t    ticket = KRCA_NULL_TICKET;
 611                 int              rrc;
 612                 __u32            nid = 0, nic_addr;
 613                 rc = gni_cdm_create(0, 1, 1, 0, &kgni_domain);
 614                 rrc = (rc == GNI_RC_SUCCESS) ? 0 : 1;
 615                 rrc += krca_nid_to_nicaddrs(nid, 1, &nic_addr);
 616                 rrc += krca_register(&ticket, RCA_MAKE_SERVICE_INDEX(RCA_IO_CLASS, 9), 99, 0);
 617                 return rrc;
 618         ],[
 619                 GNICPPFLAGS="$GNICPPFLAGS -DGNILND_USE_RCA=1"
 620         ])
 621         EXTRA_KCFLAGS="$EXTRA_KCFLAGS_save"
 622 ])
 623 AC_SUBST(GNICPPFLAGS)
 624 AC_SUBST(GNILND)
 625 ]) # LN_CONFIG_GNILND
 626
 627 #
 628 # LN_CONFIG_SK_SLEEP
 629 #
 630 # 2.6.35 kernel has sk_sleep function
 631 #
 632 AC_DEFUN([LN_CONFIG_SK_SLEEP], [
 633 LB_CHECK_COMPILE([if Linux kernel has 'sk_sleep'],
 634 sk_sleep, [
 635         #include <net/sock.h>
 636 ],[
 637         sk_sleep(NULL);
 638 ],[
 639         AC_DEFINE(HAVE_SK_SLEEP, 1,
 640                   [kernel has sk_sleep])
 641 ])
 642 ]) # LN_CONFIG_SK_SLEEP
 643
 644 #
 645 # LN_CONFIG_TCP_SENDPAGE
 646 #
 647 # 2.6.36 tcp_sendpage() first parameter is 'struct sock'
 648 # instead of 'struct socket'.
 649 #
 650 AC_DEFUN([LN_CONFIG_TCP_SENDPAGE], [
 651 tmp_flags="$EXTRA_KCFLAGS"
 652 EXTRA_KCFLAGS="-Werror"
 653 LB_CHECK_COMPILE([if 'tcp_sendpage' first parameter is socket],
 654 tcp_sendpage_socket, [
 655         #include <linux/net.h>
 656         #include <net/tcp.h>
 657 ],[
 658         tcp_sendpage((struct socket*)0, NULL, 0, 0, 0);
 659 ],[
 660         AC_DEFINE(HAVE_TCP_SENDPAGE_USE_SOCKET, 1,
 661                 [tcp_sendpage use socket as first parameter])
 662 ])
 663 EXTRA_KCFLAGS="$tmp_flags"
 664 ]) # LN_CONFIG_TCP_SENDPAGE
 665
 666 # LN_CONFIG_SOCK_CREATE_KERN
 667 #
 668 # 4.x sock_create_kern() added a first parameter as 'struct net *'
 669 # instead of int.
 670 #
 671 AC_DEFUN([LN_CONFIG_SOCK_CREATE_KERN], [
 672 tmp_flags="$EXTRA_KCFLAGS"
 673 EXTRA_KCFLAGS="-Werror"
 674 LB_CHECK_COMPILE([if 'sock_create_kern' first parameter is net],
 675 sock_create_kern_net, [
 676         #include <linux/net.h>
 677         #include <net/net_namespace.h>
 678 ],[
 679         sock_create_kern((struct net*)0, 0, 0, 0, NULL);
 680 ],[
 681         AC_DEFINE(HAVE_SOCK_CREATE_KERN_USE_NET, 1,
 682                 [sock_create_kern use net as first parameter])
 683 ])
 684 EXTRA_KCFLAGS="$tmp_flags"
 685 ]) # LN_CONFIG_SOCK_CREATE_KERN
 686
 687 #
 688 # LN_CONFIG_SK_DATA_READY
 689 #
 690 # 3.15 for struct sock the *sk_data_ready() field only takes one argument now
 691 #
 692 AC_DEFUN([LN_CONFIG_SK_DATA_READY], [
 693 tmp_flags="$EXTRA_KCFLAGS"
 694 EXTRA_KCFLAGS="-Werror"
 695 LB_CHECK_COMPILE([if 'sk_data_ready' takes only one argument],
 696 sk_data_ready, [
 697         #include <linux/net.h>
 698         #include <net/sock.h>
 699 ],[
 700         ((struct sock *)0)->sk_data_ready(NULL);
 701 ],[
 702         AC_DEFINE(HAVE_SK_DATA_READY_ONE_ARG, 1,
 703                 [sk_data_ready uses only one argument])
 704 ])
 705 EXTRA_KCFLAGS="$tmp_flags"
 706 ]) # LN_CONFIG_SK_DATA_READY
 707
 708 #
 709 # LN_EXPORT_KMAP_TO_PAGE
 710 #
 711 # 3.10 Export kmap_to_page
 712 #
 713 AC_DEFUN([LN_EXPORT_KMAP_TO_PAGE], [
 714 LB_CHECK_EXPORT([kmap_to_page], [mm/highmem.c],
 715         [AC_DEFINE(HAVE_KMAP_TO_PAGE, 1,
 716                 [kmap_to_page is exported by the kernel])])
 717 ]) # LN_EXPORT_KMAP_TO_PAG
 718
 719 #
 720 # LN_CONFIG_SOCK_ACCEPT
 721 #
 722 # 4.11 commit cdfbabfb2f0ce983fdaa42f20e5f7842178fc01e added a flag
 723 # to handle a possible lockdep condition kernel socket accept.
 724 #
 725 AC_DEFUN([LN_CONFIG_SOCK_ACCEPT], [
 726 tmp_flags="$EXTRA_KCFLAGS"
 727 EXTRA_KCFLAGS="-Werror"
 728 LB_CHECK_COMPILE([if 'struct sock' accept function requires a bool argument],
 729 kern_sock_flag, [
 730         #include <linux/net.h>
 731 ],[
 732         ((struct socket *)0)->ops->accept(NULL, NULL, O_NONBLOCK, false);
 733 ],[
 734         AC_DEFINE(HAVE_KERN_SOCK_ACCEPT_FLAG_ARG, 1,
 735                 ['struct sock' accept function requires bool argument])
 736 ])
 737 EXTRA_KCFLAGS="$tmp_flags"
 738 ]) # LN_CONFIG_SOCK_ACCEPT
 739
 740 #
 741 # LN_PROG_LINUX
 742 #
 743 # LNet linux kernel checks
 744 #
 745 AC_DEFUN([LN_PROG_LINUX], [
 746 AC_MSG_NOTICE([LNet kernel checks
 747 ==============================================================================])
 748
 749 LN_CONFIG_AFFINITY
 750 LN_CONFIG_BACKOFF
 751 LN_CONFIG_O2IB
 752 LN_CONFIG_GNILND
 753 # 2.6.35
 754 LN_CONFIG_SK_SLEEP
 755 # 2.6.36
 756 LN_CONFIG_TCP_SENDPAGE
 757 # 3.10
 758 LN_EXPORT_KMAP_TO_PAGE
 759 # 3.15
 760 LN_CONFIG_SK_DATA_READY
 761 # 4.x
 762 LN_CONFIG_SOCK_CREATE_KERN
 763 # 4.11
 764 LN_CONFIG_SOCK_ACCEPT
 765 ]) # LN_PROG_LINUX
 766
 767 #
 768 # LN_PATH_DEFAULTS
 769 #
 770 # default paths for installed files
 771 #
 772 AC_DEFUN([LN_PATH_DEFAULTS], [
 773 ]) # LN_PATH_DEFAULTS
 774
 775 #
 776 # LN_CONFIGURE
 777 #
 778 # other configure checks
 779 #
 780 AC_DEFUN([LN_CONFIGURE], [
 781 AC_MSG_NOTICE([LNet core checks
 782 ==============================================================================])
 783
 784 # lnet/utils/portals.c
 785 AC_CHECK_HEADERS([netdb.h])
 786 AC_CHECK_FUNCS([gethostbyname])
 787
 788 # lnet/utils/wirecheck.c
 789 AC_CHECK_FUNCS([strnlen])
 790
 791 # --------  Check for required packages  --------------
 792
 793 AC_MSG_CHECKING([whether to enable 'efence' debugging support])
 794 AC_ARG_ENABLE(efence,
 795         AC_HELP_STRING([--enable-efence],
 796                 [use efence library]),
 797         [], [enable_efence="no"])
 798 AC_MSG_RESULT([$enable_efence])
 799
 800 LIBEFENCE=""
 801 AS_IF([test "$enable_efence" = yes], [
 802         LIBEFENCE="-lefence"
 803         AC_DEFINE(HAVE_LIBEFENCE, 1,
 804                 [libefence support is requested])
 805 ])
 806 AC_SUBST(LIBEFENCE)
 807
 808 LN_CONFIG_MAX_PAYLOAD
 809 LN_CONFIG_DLC
 810 ]) # LN_CONFIGURE
 811
 812 #
 813 # LN_CONDITIONALS
 814 #
 815 # AM_CONDITIONAL defines for lnet
 816 #
 817 AC_DEFUN([LN_CONDITIONALS], [
 818 AM_CONDITIONAL(BUILD_O2IBLND,    test x$O2IBLND = "xo2iblnd")
 819 AM_CONDITIONAL(BUILD_GNILND,     test x$GNILND  = "xgnilnd")
 820 ]) # LN_CONDITIONALS
 821
 822 #
 823 # LN_CONFIG_FILES
 824 #
 825 # files that should be generated with AC_OUTPUT
 826 #
 827 AC_DEFUN([LN_CONFIG_FILES], [
 828 AC_CONFIG_FILES([
 829 lnet/Makefile
 830 lnet/autoMakefile
 831 lnet/autoconf/Makefile
 832 lnet/doc/Makefile
 833 lnet/include/Makefile
 834 lnet/include/lnet/Makefile
 835 lnet/include/uapi/linux/lnet/Makefile
 836 lnet/klnds/Makefile
 837 lnet/klnds/autoMakefile
 838 lnet/klnds/o2iblnd/Makefile
 839 lnet/klnds/o2iblnd/autoMakefile
 840 lnet/klnds/gnilnd/Makefile
 841 lnet/klnds/gnilnd/autoMakefile
 842 lnet/klnds/socklnd/Makefile
 843 lnet/klnds/socklnd/autoMakefile
 844 lnet/lnet/Makefile
 845 lnet/lnet/autoMakefile
 846 lnet/selftest/Makefile
 847 lnet/selftest/autoMakefile
 848 lnet/utils/Makefile
 849 lnet/utils/lnetconfig/Makefile
 850 ])
 851 ]) # LN_CONFIG_FILES