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 $LINUX/include/linux/tcp.h | grep -q __u16 >/dev/null],
  18                         [AC_DEFINE(SOCKNAL_BACKOFF_MS, 1,
  19                                 [tunable backoff TCP in ms])])
  20         ], [
  21                 AC_MSG_RESULT([no])
  22         ])
  23 ])
  24 ]) # LN_CONFIG_BACKOFF
  25
  26 #
  27 # LN_CONFIG_DLC
  28 #
  29 # Configure dlc
  30 #
  31 # fail to build if libyaml is not installed
  32 #
  33 AC_DEFUN([LN_CONFIG_DLC], [
  34         AS_IF([test "x$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 ]) # LN_CONFIG_DLC
  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         AS_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                                 LIST_ALL_PKG="dpkg -l | awk '{print \[$]2}'"
  64                                 LSPKG="dpkg --listfiles"
  65                         ], [
  66                                 LIST_ALL_PKG="rpm -qa"
  67                                 LSPKG="rpm -ql"
  68                         ])
  69
  70                         O2IBPKG="mlnx-ofed-kernel-dkms"
  71                         O2IBPKG+="|mlnx-ofed-kernel-modules"
  72                         O2IBPKG+="|mlnx-ofa_kernel-devel"
  73                         O2IBPKG+="|compat-rdma-devel"
  74                         O2IBPKG+="|kernel-ib-devel"
  75                         O2IBPKG+="|ofa_kernel-devel"
  76
  77                         O2IBDIR="/ofa_kernel"
  78                         O2IBDIR+="|/ofa_kernel/default"
  79                         O2IBDIR+="|/openib"
  80
  81                         O2IBDIR_PATH=$(eval $LIST_ALL_PKG |
  82                                        egrep -w "$O2IBPKG" | xargs $LSPKG |
  83                                        egrep "${O2IBDIR}$" | head -n1)
  84
  85                         if test -n "$O2IBDIR_PATH"; then
  86                                 O2IBPATHS=$(find $O2IBDIR_PATH -name rdma_cm.h |
  87                                         egrep "`uname -r`|default" |
  88                                         sed -e 's/\/include\/rdma\/rdma_cm.h//')
  89                         fi
  90
  91                         AS_IF([test -z "$O2IBPATHS"], [
  92                                 AC_MSG_ERROR([
  93 You seem to have an OFED installed but have not installed it's devel package.
  94 If you still want to build Lustre for your OFED I/B stack, you need to install its devel headers RPM.
  95 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.
  96                                              ])
  97                         ])
  98                         AS_IF([test $(echo $O2IBPATHS | wc -w) -ge 2], [
  99                                 AC_MSG_ERROR([
 100 It appears that you have multiple OFED versions installed.
 101 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.
 102 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.
 103                                              ])
 104                         ])
 105                         if test -e $O2IBPATHS/${LINUXRELEASE}; then
 106                             O2IBPATHS=$O2IBPATHS/${LINUXRELEASE}
 107                         elif test -e $O2IBPATHS/default; then
 108                             O2IBPATHS=$O2IBPATHS/default
 109                         fi
 110                         OFED="yes"
 111                 ], [
 112                         O2IBPATHS="$LINUX $LINUX/drivers/infiniband"
 113                 ])
 114                 ENABLEO2IB="yes"
 115                 ;;
 116         no)     ENABLEO2IB="no"
 117                 ;;
 118         *)      O2IBPATHS=$with_o2ib
 119                 ENABLEO2IB="withpath"
 120                 OFED="yes"
 121                 ;;
 122 esac
 123
 124 AS_IF([test $ENABLEO2IB = "no"], [
 125         AC_MSG_RESULT([no])
 126         AC_DEFUN([LN_CONFIG_O2IB_SRC], [])
 127         AC_DEFUN([LN_CONFIG_O2IB_RESULTS], [])
 128 ], [
 129         o2ib_found=false
 130         for O2IBPATH in $O2IBPATHS; do
 131                 AS_IF([test \( -f ${O2IBPATH}/include/rdma/rdma_cm.h -a \
 132                            -f ${O2IBPATH}/include/rdma/ib_cm.h -a \
 133                            -f ${O2IBPATH}/include/rdma/ib_verbs.h \)], [
 134                         o2ib_found=true
 135                         break
 136                 ])
 137         done
 138         if ! $o2ib_found; then
 139                 AC_MSG_RESULT([no])
 140                 case $ENABLEO2IB in
 141                         "yes") AC_MSG_ERROR([no OFED nor kernel OpenIB gen2 headers present]) ;;
 142                         "withpath") AC_MSG_ERROR([bad --with-o2ib path]) ;;
 143                         *) AC_MSG_ERROR([internal error]) ;;
 144                 esac
 145         else
 146                 COMPAT_AUTOCONF=""
 147                 compatrdma_found=false
 148                 if test -f ${O2IBPATH}/include/linux/compat-2.6.h; then
 149                         AC_MSG_RESULT([yes])
 150                         compatrdma_found=true
 151                         AC_DEFINE(HAVE_COMPAT_RDMA, 1, [compat rdma found])
 152                         EXTRA_OFED_CONFIG="$EXTRA_OFED_CONFIG -include ${O2IBPATH}/include/linux/compat-2.6.h"
 153                         if test -f "$O2IBPATH/include/linux/compat_autoconf.h"; then
 154                                 COMPAT_AUTOCONF="$O2IBPATH/include/linux/compat_autoconf.h"
 155                         fi
 156                 else
 157                         AC_MSG_RESULT([no])
 158                 fi
 159                 if ! $compatrdma_found; then
 160                         if test -f "$O2IBPATH/config.mk"; then
 161                                 . "$O2IBPATH/config.mk"
 162                         elif test -f "$O2IBPATH/ofed_patch.mk"; then
 163                                 . "$O2IBPATH/ofed_patch.mk"
 164                         fi
 165                 elif test -z "$COMPAT_AUTOCONF"; then
 166                         # Depreciated checks
 167                         if test "x$RHEL_KERNEL" = xyes; then
 168                                 RHEL_MAJOR=$(awk '/ RHEL_MAJOR / { print [$]3 }' $LINUX_OBJ/include/$VERSION_HDIR/version.h)
 169                                 I=$(awk '/ RHEL_MINOR / { print [$]3 }' $LINUX_OBJ/include/$VERSION_HDIR/version.h)
 170                                 while test "$I" -ge 0; do
 171                                         EXTRA_OFED_INCLUDE="$EXTRA_OFED_INCLUDE -DCONFIG_COMPAT_RHEL_${RHEL_MAJOR}_$I"
 172                                         I=$(($I-1))
 173                                 done
 174                         elif test "x$SUSE_KERNEL" = xyes; then
 175                                 SP=$(grep PATCHLEVEL /etc/SuSE-release | sed -e 's/.*= *//')
 176                                 EXTRA_OFED_INCLUDE="$EXTRA_OFED_INCLUDE -DCONFIG_COMPAT_SLES_11_$SP"
 177                         fi
 178                 fi
 179
 180                 AC_MSG_CHECKING([whether to use any OFED backport headers])
 181                 if test -n "$BACKPORT_INCLUDES"; then
 182                         AC_MSG_RESULT([yes])
 183                         OFED_BACKPORT_PATH="$O2IBPATH/${BACKPORT_INCLUDES/*\/kernel_addons/kernel_addons}/"
 184                         EXTRA_OFED_INCLUDE="-I$OFED_BACKPORT_PATH $EXTRA_OFED_INCLUDE"
 185                 else
 186                         AC_MSG_RESULT([no])
 187                 fi
 188
 189                 O2IBLND=""
 190                 O2IBPATH=$(readlink --canonicalize $O2IBPATH)
 191                 EXTRA_OFED_INCLUDE="$EXTRA_OFED_INCLUDE -I$O2IBPATH/include -I$O2IBPATH/include/uapi"
 192                 EXTRA_CHECK_INCLUDE="$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE"
 193                 LB_CHECK_COMPILE([whether to enable OpenIB gen2 support],
 194                 openib_gen2_support, [
 195                         #ifdef HAVE_COMPAT_RDMA
 196                         #undef PACKAGE_NAME
 197                         #undef PACKAGE_TARNAME
 198                         #undef PACKAGE_VERSION
 199                         #undef PACKAGE_STRING
 200                         #undef PACKAGE_BUGREPORT
 201                         #undef PACKAGE_URL
 202                         #include <linux/compat-2.6.h>
 203                         #endif
 204                         #include <linux/version.h>
 205                         #include <linux/pci.h>
 206                         #include <linux/gfp.h>
 207                         #include <rdma/rdma_cm.h>
 208                         #include <rdma/ib_cm.h>
 209                         #include <rdma/ib_verbs.h>
 210                 ],[
 211                         struct rdma_cm_id      *cm_idi __attribute__ ((unused));
 212                         struct rdma_conn_param  conn_param __attribute__ ((unused));
 213                         struct ib_device_attr   device_attr __attribute__ ((unused));
 214                         struct ib_qp_attr       qp_attr __attribute__ ((unused));
 215                         enum   ib_cm_rej_reason rej_reason __attribute__ ((unused));
 216                         rdma_destroy_id(NULL);
 217                 ],[
 218                         O2IBLND="o2iblnd"
 219                 ],[
 220                         case $ENABLEO2IB in
 221                         "yes") AC_MSG_ERROR([can't compile with OpenIB gen2 headers]) ;;
 222                         "withpath") AC_MSG_ERROR([can't compile with OpenIB gen2 headers under $O2IBPATH]) ;;
 223                         *) AC_MSG_ERROR([internal error]) ;;
 224                         esac
 225                 ])
 226                 # we know at this point that the found OFED source is good
 227                 O2IB_SYMVER=""
 228                 if test -f $O2IBPATH/Module.symvers; then
 229                         O2IB_SYMVER=$O2IBPATH/Module.symvers
 230                 elif test "x$SUSE_KERNEL" = "xyes"; then
 231                         O2IB_SYMVER=$(find ${O2IBPATH}* -name Module.symvers)
 232                         # Select only the current 'flavor' if there is more than 1
 233                         NUM_AVAIL=$(find ${O2IBPATH}* -name Module.symvers | wc -l)
 234                         if test ${NUM_AVAIL} -gt 1; then
 235                                 PREFER=$(basename ${LINUX_OBJ})
 236                                 for F in $(find ${O2IBPATH}-obj -name Module.symvers)
 237                                 do
 238                                         maybe=$(echo $F | grep "/${PREFER}")
 239                                         if test "x$maybe" != "x"; then
 240                                                 O2IB_SYMVER=$F
 241                                         fi
 242                                 done
 243                         fi
 244                 elif test -f $LINUX_OBJ/Module.symvers; then
 245                         # Debian symvers is in the arch tree
 246                         O2IB_SYMVER=$LINUX_OBJ/Module.symvers
 247                 fi
 248                 if test -n "$O2IB_SYMVER"; then
 249                         if test ！"$O2IB_SYMVER" -ef "$LINUX_OBJ/Module.symvers"; then
 250                                 AC_MSG_NOTICE([adding $O2IB_SYMVER to Symbol Path O2IB])
 251                                 EXTRA_SYMBOLS="$EXTRA_SYMBOLS $O2IB_SYMVER"
 252                                 AC_SUBST(EXTRA_SYMBOLS)
 253                         fi
 254                 else
 255                         AC_MSG_ERROR([an external source tree was, either specified or detected, for o2iblnd however I could not find a $O2IBPATH/Module.symvers there])
 256                 fi
 257
 258                 LB_CHECK_COMPILE([if Linux kernel has kthread_worker],
 259                 linux_kthread_worker, [
 260                         #ifdef HAVE_COMPAT_RDMA
 261                         #undef PACKAGE_NAME
 262                         #undef PACKAGE_TARNAME
 263                         #undef PACKAGE_VERSION
 264                         #undef PACKAGE_STRING
 265                         #undef PACKAGE_BUGREPORT
 266                         #undef PACKAGE_URL
 267                         #include <linux/compat-2.6.h>
 268                         #endif
 269                         #include <linux/kthread.h>
 270                 ],[
 271                         struct kthread_work *kth_wrk = NULL;
 272                         flush_kthread_work(kth_wrk);
 273                 ],[
 274                         AC_DEFINE(HAVE_KTHREAD_WORK, 1, [kthread_worker found])
 275                         if test -z "$COMPAT_AUTOCONF"; then
 276                                 EXTRA_OFED_INCLUDE="$EXTRA_OFED_INCLUDE -DCONFIG_COMPAT_IS_KTHREAD"
 277                         fi
 278                 ])
 279                 EXTRA_CHECK_INCLUDE=""
 280         fi
 281 ])
 282 AC_SUBST(EXTRA_OFED_CONFIG)
 283 AC_SUBST(EXTRA_OFED_INCLUDE)
 284 AC_SUBST(O2IBLND)
 285 AC_SUBST(O2IBPATH)
 286 AC_SUBST(ENABLEO2IB)
 287
 288 AS_IF([test $ENABLEO2IB != "no"], [
 289         EXTRA_CHECK_INCLUDE="$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE"
 290         if test ! $O2IBPATH -ef $LINUX_OBJ; then
 291                 KBUILD_EXTRA_SYMBOLS="$KBUILD_EXTRA_SYMBOLS $O2IBPATH/Module.symvers"
 292         fi
 293
 294         # In RHEL 6.2, rdma_create_id() takes the queue-pair type as a fourth argument
 295         AC_DEFUN([LN_SRC_O2IB_RDMA_CREATE_ID_4A], [
 296                 LB2_LINUX_TEST_SRC([rdma_create_id_4args], [
 297                         #ifdef HAVE_COMPAT_RDMA
 298                         #undef PACKAGE_NAME
 299                         #undef PACKAGE_TARNAME
 300                         #undef PACKAGE_VERSION
 301                         #undef PACKAGE_STRING
 302                         #undef PACKAGE_BUGREPORT
 303                         #undef PACKAGE_URL
 304                         #include <linux/compat-2.6.h>
 305                         #endif
 306                         #include <rdma/rdma_cm.h>
 307                 ],[
 308                         rdma_create_id(NULL, NULL, 0, 0);
 309                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 310         ])
 311         AC_DEFUN([LN_O2IB_RDMA_CREATE_ID_4A], [
 312                 AC_MSG_CHECKING([if 'rdma_create_id' wants four args])
 313                 LB2_LINUX_TEST_RESULT([rdma_create_id_4args], [
 314                         AC_DEFINE(HAVE_RDMA_CREATE_ID_4ARG, 1,
 315                                 [rdma_create_id wants 4 args])
 316                 ])
 317         ])
 318
 319         # 4.4 added network namespace parameter for rdma_create_id()
 320         AC_DEFUN([LN_SRC_O2IB_RDMA_CREATE_ID_5A], [
 321                 LB2_LINUX_TEST_SRC([rdma_create_id_5args], [
 322                         #ifdef HAVE_COMPAT_RDMA
 323                         #undef PACKAGE_NAME
 324                         #undef PACKAGE_TARNAME
 325                         #undef PACKAGE_VERSION
 326                         #undef PACKAGE_STRING
 327                         #undef PACKAGE_BUGREPORT
 328                         #undef PACKAGE_URL
 329                         #include <linux/compat-2.6.h>
 330                         #endif
 331                         #include <rdma/rdma_cm.h>
 332                 ],[
 333                         rdma_create_id(NULL, NULL, NULL, 0, 0);
 334                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 335         ])
 336         AC_DEFUN([LN_O2IB_RDMA_CREATE_ID_5A], [
 337                 AC_MSG_CHECKING([if 'rdma_create_id' wants five args])
 338                 LB2_LINUX_TEST_RESULT([rdma_create_id_5args], [
 339                         AC_DEFINE(HAVE_RDMA_CREATE_ID_5ARG, 1,
 340                                 [rdma_create_id wants 5 args])
 341                 ])
 342         ])
 343
 344         # 4.2 introduced struct ib_cq_init_attr which is used
 345         # by ib_create_cq(). Note some OFED stacks only keep
 346         # their headers in sync with latest kernels but not
 347         # the functionality which means for infiniband testing
 348         # we need to always test functionality testings.
 349         AC_DEFUN([LN_SRC_O2IB_IB_CQ_INIT_ATTR], [
 350                 LB2_LINUX_TEST_SRC([ib_cq_init_attr], [
 351                         #ifdef HAVE_COMPAT_RDMA
 352                         #undef PACKAGE_NAME
 353                         #undef PACKAGE_TARNAME
 354                         #undef PACKAGE_VERSION
 355                         #undef PACKAGE_STRING
 356                         #undef PACKAGE_BUGREPORT
 357                         #undef PACKAGE_URL
 358                         #include <linux/compat-2.6.h>
 359                         #endif
 360                         #include <rdma/ib_verbs.h>
 361                 ],[
 362                         struct ib_cq_init_attr cq_attr;
 363
 364                         ib_create_cq(NULL, NULL, NULL, NULL, &cq_attr);
 365                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 366         ])
 367         AC_DEFUN([LN_O2IB_IB_CQ_INIT_ATTR], [
 368                 AC_MSG_CHECKING([if 'struct ib_cq_init_attr' is used])
 369                 LB2_LINUX_TEST_RESULT([ib_cq_init_attr], [
 370                         AC_DEFINE(HAVE_IB_CQ_INIT_ATTR, 1,
 371                                 [struct ib_cq_init_attr is used by ib_create_cq])
 372                 ])
 373         ])
 374
 375         # 4.3 removed ib_alloc_fast_reg_mr()
 376         AC_DEFUN([LN_SRC_O2IB_IB_ALLOC_FAST_REG_MR], [
 377                 LB2_LINUX_TEST_SRC([ib_alloc_fast_reg_mr], [
 378                         #ifdef HAVE_COMPAT_RDMA
 379                         #undef PACKAGE_NAME
 380                         #undef PACKAGE_TARNAME
 381                         #undef PACKAGE_VERSION
 382                         #undef PACKAGE_STRING
 383                         #undef PACKAGE_BUGREPORT
 384                         #undef PACKAGE_URL
 385                         #include <linux/compat-2.6.h>
 386                         #endif
 387                         #include <rdma/ib_verbs.h>
 388                 ],[
 389                         ib_alloc_fast_reg_mr(NULL, 0);
 390                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 391         ])
 392         AC_DEFUN([LN_O2IB_IB_ALLOC_FAST_REG_MR], [
 393                 AC_MSG_CHECKING([if 'ib_alloc_fast_reg_mr' exists])
 394                 LB2_LINUX_TEST_RESULT([ib_alloc_fast_reg_mr], [
 395                         AC_DEFINE(HAVE_IB_ALLOC_FAST_REG_MR, 1,
 396                                 [ib_alloc_fast_reg_mr is defined])
 397                 ])
 398         ])
 399
 400         # 4.9 must stop using ib_get_dma_mr and the global MR
 401         # We then have to use FMR/Fastreg for all RDMA.
 402         AC_DEFUN([LN_SRC_O2IB_IB_GET_DMA_MR], [
 403                 LB2_LINUX_TEST_SRC([ib_get_dma_mr], [
 404                         #ifdef HAVE_COMPAT_RDMA
 405                         #undef PACKAGE_NAME
 406                         #undef PACKAGE_TARNAME
 407                         #undef PACKAGE_VERSION
 408                         #undef PACKAGE_STRING
 409                         #undef PACKAGE_BUGREPORT
 410                         #undef PACKAGE_URL
 411                         #include <linux/compat-2.6.h>
 412                         #endif
 413                         #include <rdma/ib_verbs.h>
 414                 ],[
 415                         ib_get_dma_mr(NULL, 0);
 416                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 417         ])
 418         AC_DEFUN([LN_O2IB_IB_GET_DMA_MR], [
 419                 AC_MSG_CHECKING([if 'ib_get_dma_mr' exists])
 420                 LB2_LINUX_TEST_RESULT([ib_get_dma_mr], [
 421                         AC_DEFINE(HAVE_IB_GET_DMA_MR, 1,
 422                                 [ib_get_dma_mr is defined])
 423                 ])
 424         ])
 425
 426         # In v4.4 Linux kernel,
 427         # commit e622f2f4ad2142d2a613a57fb85f8cf737935ef5
 428         # split up struct ib_send_wr so that all non-trivial verbs
 429         # use their own structure which embedds struct ib_send_wr.
 430         AC_DEFUN([LN_SRC_O2IB_IB_RDMA_WR], [
 431                 LB2_LINUX_TEST_SRC([ib_rdma_wr], [
 432                         #ifdef HAVE_COMPAT_RDMA
 433                         #undef PACKAGE_NAME
 434                         #undef PACKAGE_TARNAME
 435                         #undef PACKAGE_VERSION
 436                         #undef PACKAGE_STRING
 437                         #undef PACKAGE_BUGREPORT
 438                         #undef PACKAGE_URL
 439                         #include <linux/compat-2.6.h>
 440                         #endif
 441                         #include <rdma/ib_verbs.h>
 442                 ],[
 443                         const struct ib_rdma_wr *wr __attribute__ ((unused));
 444
 445                         wr = rdma_wr(NULL);
 446                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 447         ])
 448         AC_DEFUN([LN_O2IB_IB_RDMA_WR], [
 449                 AC_MSG_CHECKING([if 'struct ib_rdma_wr' is defined])
 450                 LB2_LINUX_TEST_RESULT([ib_rdma_wr], [
 451                         AC_DEFINE(HAVE_IB_RDMA_WR, 1,
 452                                 [struct ib_rdma_wr is defined])
 453                 ])
 454         ])
 455
 456         # new fast registration API introduced in 4.4
 457         AC_DEFUN([LN_SRC_O2IB_IB_MAP_MR_SG_4A], [
 458                 LB2_LINUX_TEST_SRC([ib_map_mr_sg_4args], [
 459                         #ifdef HAVE_COMPAT_RDMA
 460                         #undef PACKAGE_NAME
 461                         #undef PACKAGE_TARNAME
 462                         #undef PACKAGE_VERSION
 463                         #undef PACKAGE_STRING
 464                         #undef PACKAGE_BUGREPORT
 465                         #undef PACKAGE_URL
 466                         #include <linux/compat-2.6.h>
 467                         #endif
 468                         #include <rdma/ib_verbs.h>
 469                 ],[
 470                         ib_map_mr_sg(NULL, NULL, 0, 0);
 471                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 472         ])
 473         # new fast registration API introduced in 4.4
 474         AC_DEFUN([LN_O2IB_IB_MAP_MR_SG_4A], [
 475                 AC_MSG_CHECKING([if 4arg 'ib_map_mr_sg' exists])
 476                 LB2_LINUX_TEST_RESULT([ib_map_mr_sg_4args], [
 477                         AC_DEFINE(HAVE_IB_MAP_MR_SG, 1,
 478                                 [ib_map_mr_sg exists])
 479                 ])
 480         ])
 481
 482         # ib_map_mr_sg changes from 4 to 5 args (adding sg_offset_p)
 483         # in kernel 4.7 (and RHEL 7.3)
 484         AC_DEFUN([LN_SRC_O2IB_IB_MAP_MR_SG_5A], [
 485                 LB2_LINUX_TEST_SRC([ib_map_mr_sg_5args], [
 486                         #ifdef HAVE_COMPAT_RDMA
 487                         #undef PACKAGE_NAME
 488                         #undef PACKAGE_TARNAME
 489                         #undef PACKAGE_VERSION
 490                         #undef PACKAGE_STRING
 491                         #undef PACKAGE_BUGREPORT
 492                         #undef PACKAGE_URL
 493                         #include <linux/compat-2.6.h>
 494                         #endif
 495                         #include <rdma/ib_verbs.h>
 496                 ],[
 497                         ib_map_mr_sg(NULL, NULL, 0, NULL, 0);
 498                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 499         ])
 500         AC_DEFUN([LN_O2IB_IB_MAP_MR_SG_5A], [
 501                 AC_MSG_CHECKING([if 5arg 'ib_map_mr_sg' exists])
 502                 LB2_LINUX_TEST_RESULT([ib_map_mr_sg_5args], [
 503                         AC_DEFINE(HAVE_IB_MAP_MR_SG, 1,
 504                                 [ib_map_mr_sg exists])
 505                         AC_DEFINE(HAVE_IB_MAP_MR_SG_5ARGS, 1,
 506                                 [ib_map_mr_sg has 5 arguments])
 507                 ])
 508         ])
 509
 510         # ib_query_device() removed in 4.5
 511         AC_DEFUN([LN_SRC_O2IB_IB_DEVICE_ATTRS], [
 512                 LB2_LINUX_TEST_SRC([ib_device_attrs], [
 513                         #ifdef HAVE_COMPAT_RDMA
 514                         #undef PACKAGE_NAME
 515                         #undef PACKAGE_TARNAME
 516                         #undef PACKAGE_VERSION
 517                         #undef PACKAGE_STRING
 518                         #undef PACKAGE_BUGREPORT
 519                         #undef PACKAGE_URL
 520                         #include <linux/compat-2.6.h>
 521                         #endif
 522                         #include <rdma/ib_verbs.h>
 523                 ],[
 524                         struct ib_device dev;
 525                         struct ib_device_attr dev_attr = {};
 526                         dev.attrs = dev_attr;
 527                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 528         ])
 529         AC_DEFUN([LN_O2IB_IB_DEVICE_ATTRS], [
 530                 AC_MSG_CHECKING([if 'struct ib_device' has member 'attrs'])
 531                 LB2_LINUX_TEST_RESULT([ib_device_attrs], [
 532                         AC_DEFINE(HAVE_IB_DEVICE_ATTRS, 1,
 533                                 [struct ib_device.attrs is defined])
 534                 ])
 535         ])
 536
 537         # A flags argument was added to ib_alloc_pd() in Linux 4.9,
 538         # commit ed082d36a7b2c27d1cda55fdfb28af18040c4a89
 539         AC_DEFUN([LN_SRC_O2IB_IB_ALLOC_PD], [
 540                 LB2_LINUX_TEST_SRC([ib_alloc_pd], [
 541                         #ifdef HAVE_COMPAT_RDMA
 542                         #undef PACKAGE_NAME
 543                         #undef PACKAGE_TARNAME
 544                         #undef PACKAGE_VERSION
 545                         #undef PACKAGE_STRING
 546                         #undef PACKAGE_BUGREPORT
 547                         #undef PACKAGE_URL
 548                         #include <linux/compat-2.6.h>
 549                         #endif
 550                         #include <rdma/ib_verbs.h>
 551                 ],[
 552                         ib_alloc_pd(NULL, 0);
 553                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 554         ])
 555         AC_DEFUN([LN_O2IB_IB_ALLOC_PD], [
 556                 AC_MSG_CHECKING([if 2arg 'ib_alloc_pd' exists])
 557                 LB2_LINUX_TEST_RESULT([ib_alloc_pd], [
 558                         AC_DEFINE(HAVE_IB_ALLOC_PD_2ARGS, 1,
 559                                 [ib_alloc_pd has 2 arguments])
 560                 ])
 561         ])
 562
 563         AC_DEFUN([LN_SRC_O2IB_IB_INC_RKEY], [
 564                 LB2_LINUX_TEST_SRC([ib_inc_rkey], [
 565                         #ifdef HAVE_COMPAT_RDMA
 566                         #undef PACKAGE_NAME
 567                         #undef PACKAGE_TARNAME
 568                         #undef PACKAGE_VERSION
 569                         #undef PACKAGE_STRING
 570                         #undef PACKAGE_BUGREPORT
 571                         #undef PACKAGE_URL
 572                         #include <linux/compat-2.6.h>
 573                         #endif
 574                         #include <rdma/ib_verbs.h>
 575                 ],[
 576                         (void)ib_inc_rkey(0);
 577                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 578         ])
 579         AC_DEFUN([LN_O2IB_IB_INC_RKEY], [
 580                 AC_MSG_CHECKING([if function 'ib_inc_rkey' is defined])
 581                 LB2_LINUX_TEST_RESULT([ib_inc_rkey], [
 582                         AC_DEFINE(HAVE_IB_INC_RKEY, 1,
 583                                   [function ib_inc_rkey exist])
 584                 ])
 585         ])
 586
 587         # In MOFED 4.6, the second and third parameters for
 588         # ib_post_send() and ib_post_recv() are declared with
 589         # 'const'.
 590         AC_DEFUN([LN_SRC_O2IB_IB_POST_SEND_CONST], [
 591                 LB2_LINUX_TEST_SRC([ib_post_send_recv_const], [
 592                         #ifdef HAVE_COMPAT_RDMA
 593                         #undef PACKAGE_NAME
 594                         #undef PACKAGE_TARNAME
 595                         #undef PACKAGE_VERSION
 596                         #undef PACKAGE_STRING
 597                         #undef PACKAGE_BUGREPORT
 598                         #undef PACKAGE_URL
 599                         #include <linux/compat-2.6.h>
 600                         #endif
 601                         #include <rdma/ib_verbs.h>
 602                 ],[
 603                         ib_post_send(NULL, (const struct ib_send_wr *)NULL,
 604                                      (const struct ib_send_wr **)NULL);
 605                 ],[-Werror],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 606         ])
 607         AC_DEFUN([LN_O2IB_IB_POST_SEND_CONST], [
 608                 AC_MSG_CHECKING([if 'ib_post_send() and ib_post_recv()' have const parameters])
 609                 LB2_LINUX_TEST_RESULT([ib_post_send_recv_const], [
 610                         AC_DEFINE(HAVE_IB_POST_SEND_RECV_CONST, 1,
 611                                 [ib_post_send and ib_post_recv have const parameters])
 612                 ])
 613         ])
 614
 615         #
 616         # LN_IB_DEVICE_OPS_EXISTS
 617         #
 618         # kernel 5.0 commit 521ed0d92ab0db3edd17a5f4716b7f698f4fce61
 619         # RDMA/core: Introduce ib_device_ops
 620         # ... introduces the ib_device_ops structure that defines all the
 621         # InfiniBand device operations in one place ...
 622         #
 623         AC_DEFUN([LN_SRC_O2IB_IB_DEVICE_OPS_EXISTS], [
 624                 LB2_LINUX_TEST_SRC([ib_device_ops_test], [
 625                         #include <rdma/ib_verbs.h>
 626                 ],[
 627                         int x = offsetof(struct ib_device_ops, unmap_fmr);
 628                         x = x;
 629                         (void)x;
 630                 ],[-Werror],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 631         ])
 632         AC_DEFUN([LN_O2IB_IB_DEVICE_OPS_EXISTS], [
 633                 AC_MSG_CHECKING([if struct ib_device_ops is defined])
 634                 LB2_LINUX_TEST_RESULT([ib_device_ops_test], [
 635                         AC_DEFINE(HAVE_IB_DEVICE_OPS, 1,
 636                                 [if struct ib_device_ops is defined])
 637                 ])
 638         ]) # LN_IB_DEVICE_OPS_EXISTS
 639
 640         #
 641         # LN_O2IB_IB_SG_DMA_ADDRESS_EXISTS
 642         #
 643         # kernel 5.1 commit a163afc88556e099271a7b423295bc5176fcecce
 644         # IB/core: Remove ib_sg_dma_address() and ib_sg_dma_len()
 645         # ... when dma_ops existed (3.6) ib_sg_dma_address() was not trivial ...
 646         #
 647         AC_DEFUN([LN_SRC_O2IB_IB_SG_DMA_ADDRESS_EXISTS], [
 648                 LB2_LINUX_TEST_SRC([ib_sg_dma_address_test], [
 649                         #include <rdma/ib_verbs.h>
 650                 ],[
 651                         u64 x = ib_sg_dma_address(NULL, NULL);
 652                         x = x;
 653                         (void)x;
 654                 ],[-Werror],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 655         ])
 656         AC_DEFUN([LN_O2IB_IB_SG_DMA_ADDRESS_EXISTS], [
 657                 AC_MSG_CHECKING([if ib_sg_dma_address wrapper exists])
 658                 LB2_LINUX_TEST_RESULT([ib_sg_dma_address_test], [
 659                         AC_DEFINE(HAVE_IB_SG_DMA_ADDRESS, 1,
 660                                 [if ib_sg_dma_address wrapper exists])
 661                 ])
 662         ]) # LN_O2IB_IB_SG_DMA_ADDRESS_EXISTS
 663
 664         #
 665         # LN_O2IB_RDMA_REJECT
 666         #
 667         # A reason argument was added to rdma_reject() in Linux 5.8,
 668         # commit 8094ba0ace7f6cd1e31ea8b151fba3594cadfa9a
 669         AC_DEFUN([LN_SRC_O2IB_RDMA_REJECT], [
 670                 LB2_LINUX_TEST_SRC([rdma_reject], [
 671                         #ifdef HAVE_COMPAT_RDMA
 672                         #undef PACKAGE_NAME
 673                         #undef PACKAGE_TARNAME
 674                         #undef PACKAGE_VERSION
 675                         #undef PACKAGE_STRING
 676                         #undef PACKAGE_BUGREPORT
 677                         #undef PACKAGE_URL
 678                         #include <linux/compat-2.6.h>
 679                         #endif
 680                         #include <rdma/ib_verbs.h>
 681                         #include <rdma/ib_cm.h>
 682                         #include <rdma/rdma_cm.h>
 683                 ],[
 684                         rdma_reject(NULL, NULL, 0, 0);
 685                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 686         ])
 687         AC_DEFUN([LN_O2IB_RDMA_REJECT], [
 688                 AC_MSG_CHECKING([if 4arg 'rdma_reject' exists])
 689                 LB2_LINUX_TEST_RESULT([rdma_reject], [
 690                         AC_DEFINE(HAVE_RDMA_REJECT_4ARGS, 1,
 691                                 [rdma_reject has 4 arguments])
 692                 ])
 693         ]) # LN_O2IB_RDMA_REJECT
 694
 695         #
 696         # LN_O2IB_IB_FMR
 697         #
 698         # The FMR pool API was removed in Linux 5.8,
 699         # commit 4e373d5417ecbb4f438a8500f0379a2fc29c2643
 700         AC_DEFUN([LN_SRC_O2IB_IB_FMR], [
 701                 LB2_LINUX_TEST_SRC([ib_fmr], [
 702                         #include <rdma/ib_verbs.h>
 703                 ],[
 704                         struct ib_fmr fmr = {};
 705                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 706         ])
 707         AC_DEFUN([LN_O2IB_IB_FMR], [
 708                 AC_MSG_CHECKING([if FMR pools API available])
 709                 LB2_LINUX_TEST_RESULT([ib_fmr], [
 710                         AC_DEFINE(HAVE_FMR_POOL_API, 1,
 711                                 [FMR pool API is available])
 712                 ])
 713         ]) # LN_O2IB_IB_FMR
 714
 715         #
 716         # LN_O2IB_RDMA_CONNECT_LOCKED
 717         #
 718         # rdma_connect_locked() was added in Linux 5.10,
 719         # commit 071ba4cc559de47160761b9500b72e8fa09d923d
 720         # and in MOFED-5.2-2. rdma_connect_locked() must
 721         # be called instead of rdma_connect() in
 722         # RDMA_CM_EVENT_ROUTE_RESOLVED handler.
 723         AC_DEFUN([LN_SRC_O2IB_RDMA_CONNECT_LOCKED], [
 724                 LB2_LINUX_TEST_SRC([rdma_connect_locked], [
 725                         #include <rdma/rdma_cm.h>
 726                 ],[
 727                         rdma_connect_locked(NULL, NULL);
 728                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 729         ])
 730         AC_DEFUN([LN_O2IB_RDMA_CONNECT_LOCKED], [
 731                 AC_MSG_CHECKING([if 'rdma_connect_locked' exists])
 732                 LB2_LINUX_TEST_RESULT([rdma_connect_locked], [
 733                         AC_DEFINE(HAVE_RDMA_CONNECT_LOCKED, 1,
 734                                 [rdma_connect_locked is defined])
 735                 ])
 736         ]) # LN_O2IB_RDMA_CONNECT_LOCKED
 737
 738         #
 739         # LN_O2IB_ETHTOOL_LINK_SETTINGS
 740         #
 741         # ethtool_link_settings was added in Linux 4.6
 742         #
 743         AC_DEFUN([LN_SRC_O2IB_ETHTOOL_LINK_SETTINGS], [
 744                 LB2_LINUX_TEST_SRC([ethtool_link_settings], [
 745                         #include <linux/ethtool.h>
 746                 ],[
 747                         struct ethtool_link_ksettings cmd;
 748                 ],[],[$EXTRA_OFED_CONFIG $EXTRA_OFED_INCLUDE])
 749         ])
 750         AC_DEFUN([LN_O2IB_ETHTOOL_LINK_SETTINGS], [
 751                 AC_MSG_CHECKING([if 'ethtool_link_settings' exists])
 752                 LB2_LINUX_TEST_RESULT([ethtool_link_settings], [
 753                         AC_DEFINE(HAVE_ETHTOOL_LINK_SETTINGS, 1,
 754                                 [ethtool_link_settings is defined])
 755                 ])
 756         ]) # LN_O2IB_ETHTOOL_LINK_SETTINGS
 757
 758         EXTRA_CHECK_INCLUDE=""
 759
 760         AC_DEFUN([LN_CONFIG_O2IB_SRC], [
 761                 LN_SRC_O2IB_RDMA_CREATE_ID_4A
 762                 LN_SRC_O2IB_RDMA_CREATE_ID_5A
 763                 LN_SRC_O2IB_IB_CQ_INIT_ATTR
 764                 LN_SRC_O2IB_IB_ALLOC_FAST_REG_MR
 765                 LN_SRC_O2IB_IB_GET_DMA_MR
 766                 LN_SRC_O2IB_IB_RDMA_WR
 767                 LN_SRC_O2IB_IB_MAP_MR_SG_4A
 768                 LN_SRC_O2IB_IB_MAP_MR_SG_5A
 769                 LN_SRC_O2IB_IB_DEVICE_ATTRS
 770                 LN_SRC_O2IB_IB_ALLOC_PD
 771                 LN_SRC_O2IB_IB_INC_RKEY
 772                 LN_SRC_O2IB_IB_POST_SEND_CONST
 773                 LN_SRC_O2IB_IB_DEVICE_OPS_EXISTS
 774                 LN_SRC_O2IB_IB_SG_DMA_ADDRESS_EXISTS
 775                 LN_SRC_O2IB_RDMA_REJECT
 776                 LN_SRC_O2IB_IB_FMR
 777                 LN_SRC_O2IB_RDMA_CONNECT_LOCKED
 778                 LN_SRC_O2IB_ETHTOOL_LINK_SETTINGS
 779         ])
 780         AC_DEFUN([LN_CONFIG_O2IB_RESULTS], [
 781                 LN_O2IB_RDMA_CREATE_ID_4A
 782                 LN_O2IB_RDMA_CREATE_ID_5A
 783                 LN_O2IB_IB_CQ_INIT_ATTR
 784                 LN_O2IB_IB_ALLOC_FAST_REG_MR
 785                 LN_O2IB_IB_GET_DMA_MR
 786                 LN_O2IB_IB_RDMA_WR
 787                 LN_O2IB_IB_MAP_MR_SG_4A
 788                 LN_O2IB_IB_MAP_MR_SG_5A
 789                 LN_O2IB_IB_DEVICE_ATTRS
 790                 LN_O2IB_IB_ALLOC_PD
 791                 LN_O2IB_IB_INC_RKEY
 792                 LN_O2IB_IB_POST_SEND_CONST
 793                 LN_O2IB_IB_DEVICE_OPS_EXISTS
 794                 LN_O2IB_IB_SG_DMA_ADDRESS_EXISTS
 795                 LN_O2IB_RDMA_REJECT
 796                 LN_O2IB_IB_FMR
 797                 LN_O2IB_RDMA_CONNECT_LOCKED
 798                 LN_O2IB_ETHTOOL_LINK_SETTINGS
 799         ])
 800 ]) # ENABLEO2IB != "no"
 801 ]) # LN_CONFIG_O2IB
 802
 803 #
 804 # LN_CONFIG_GNILND
 805 #
 806 # check whether to use the Gemini Network Interface lnd
 807 #
 808 AC_DEFUN([LN_CONFIG_GNILND], [
 809 AC_MSG_CHECKING([whether to enable GNI lnd])
 810 AC_ARG_ENABLE([gni],
 811         AS_HELP_STRING([--enable-gni],
 812                 [enable GNI lnd]),
 813         [], [enable_gni="no"])
 814 AC_MSG_RESULT([$enable_gni])
 815
 816 AS_IF([test "x$enable_gni" = xyes], [
 817         # GNICPPFLAGS was set in spec file
 818         EXTRA_KCFLAGS_save="$EXTRA_KCFLAGS"
 819         EXTRA_KCFLAGS="$EXTRA_KCFLAGS $GNICPPFLAGS"
 820         LB_CHECK_COMPILE([if GNI kernel headers are present],
 821         GNI_header, [
 822                 #include <linux/types.h>
 823                 #include <gni_pub.h>
 824         ],[
 825                 gni_cdm_handle_t kgni_domain;
 826                 gni_return_t     rc;
 827                 int              rrc;
 828                 rc = gni_cdm_create(0, 1, 1, 0, &kgni_domain);
 829                 rrc = (rc == GNI_RC_SUCCESS) ? 0 : 1;
 830                 return rrc;
 831         ],[
 832                 GNILND="gnilnd"
 833         ],[
 834                 AC_MSG_ERROR([cannot compile gnilnd with given GNICPPFLAGS: $GNICPPFLAGS])
 835         ])
 836         # at this point, we have gnilnd basic support,
 837         # now check for extra features
 838         LB_CHECK_COMPILE([to use RCA in gnilnd],
 839         RCA_gnilnd, [
 840                 #include <linux/types.h>
 841                 #include <gni_pub.h>
 842                 #include <krca_lib.h>
 843         ],[
 844                 gni_cdm_handle_t kgni_domain;
 845                 gni_return_t     rc;
 846                 krca_ticket_t    ticket = KRCA_NULL_TICKET;
 847                 int              rrc;
 848                 __u32            nid = 0, nic_addr;
 849                 rc = gni_cdm_create(0, 1, 1, 0, &kgni_domain);
 850                 rrc = (rc == GNI_RC_SUCCESS) ? 0 : 1;
 851                 rrc += krca_nid_to_nicaddrs(nid, 1, &nic_addr);
 852                 rrc += krca_register(&ticket, RCA_MAKE_SERVICE_INDEX(RCA_IO_CLASS, 9), 99, 0);
 853                 return rrc;
 854         ],[
 855                 GNICPPFLAGS="$GNICPPFLAGS -DGNILND_USE_RCA=1"
 856         ])
 857         EXTRA_KCFLAGS="$EXTRA_KCFLAGS_save"
 858 ])
 859 AC_SUBST(GNICPPFLAGS)
 860 AC_SUBST(GNILND)
 861 ]) # LN_CONFIG_GNILND
 862
 863 #
 864 # LN_CONFIG_KFILND
 865 #
 866 # check whether to use the kfabric Network Interface lnd
 867 #
 868 AC_DEFUN([LN_CONFIG_KFILND], [
 869 AC_ARG_WITH([kfi],
 870         AS_HELP_STRING([--with-kfi=<path>], [Kfabric build path for kfilnd]),
 871         [
 872                 AC_CHECK_FILE([$with_kfi/Module.symvers],
 873                 [
 874                         # KFICPPFLAGS was set in spec file
 875                         KFICPPFLAGS="-I$with_kfi/include"
 876                         EXTRA_KCFLAGS_save="$EXTRA_KCFLAGS"
 877                         EXTRA_KCFLAGS="$EXTRA_KCFLAGS $KFICPPFLAGS"
 878                         KBUILD_EXTRA_SYMBOLS="$KBUILD_EXTRA_SYMBOLS $with_kfi/Module.symvers"
 879                         LB_CHECK_COMPILE([if kfabric headers are present], KFI_header,
 880                         [
 881                                 #include <kfi_endpoint.h>
 882                         ],[
 883                                 struct kfi_info *hints;
 884                                 hints = kfi_allocinfo();
 885                         ],[
 886                                 KFILND="kfilnd"
 887                                 AC_MSG_NOTICE([adding $with_kfi/Module.symvers to Symbol Path])
 888                                 EXTRA_SYMBOLS="$EXTRA_SYMBOLS $with_kfi/Module.symvers"
 889                         ],[
 890                                 AC_MSG_ERROR([can't compile kfilnd with given KFICPPFLAGS: $KFICPPFLAGS])
 891                         ])
 892                 ],[
 893                         AC_MSG_ERROR(["$with_kfi/Module.symvers does not exist"])
 894                 ])
 895         ],[])
 896 AC_DEFINE(HAVE_KFILND, 1, [support kfabric LND])
 897 AC_SUBST(KFICPPFLAGS)
 898 AC_SUBST(KFILND)
 899 AC_SUBST(EXTRA_SYMBOLS)
 900 ]) # LN_CONFIG_KFILND
 901
 902 #
 903 # LN_CONFIG_SOCK_CREATE_KERN
 904 #
 905 # 4.x sock_create_kern() added a first parameter as 'struct net *'
 906 # instead of int.
 907 #
 908 AC_DEFUN([LN_SRC_CONFIG_SOCK_CREATE_KERN], [
 909         LB2_LINUX_TEST_SRC([sock_create_kern_net], [
 910                 #include <linux/net.h>
 911                 #include <net/net_namespace.h>
 912         ],[
 913                 sock_create_kern((struct net*)0, 0, 0, 0, NULL);
 914         ],[-Werror])
 915 ])
 916 AC_DEFUN([LN_CONFIG_SOCK_CREATE_KERN], [
 917         AC_MSG_CHECKING([if 'sock_create_kern' first parameter is net])
 918         LB2_LINUX_TEST_RESULT([sock_create_kern_net], [
 919                 AC_DEFINE(HAVE_SOCK_CREATE_KERN_USE_NET, 1,
 920                         [sock_create_kern use net as first parameter])
 921         ])
 922 ]) # LN_CONFIG_SOCK_CREATE_KERN
 923
 924 #
 925 # LN_CONFIG_SK_DATA_READY
 926 #
 927 # 3.15 for struct sock the *sk_data_ready() field only takes one argument now
 928 #
 929 AC_DEFUN([LN_SRC_CONFIG_SK_DATA_READY], [
 930         LB2_LINUX_TEST_SRC([sk_data_ready], [
 931                 #include <linux/net.h>
 932                 #include <net/sock.h>
 933         ],[
 934                 ((struct sock *)0)->sk_data_ready(NULL);
 935         ],[-Werror])
 936 ])
 937 AC_DEFUN([LN_CONFIG_SK_DATA_READY], [
 938         AC_MSG_CHECKING([if 'sk_data_ready' takes only one argument])
 939         LB2_LINUX_TEST_RESULT([sk_data_ready], [
 940         AC_DEFINE(HAVE_SK_DATA_READY_ONE_ARG, 1,
 941                 [sk_data_ready uses only one argument])
 942         ])
 943 ]) # LN_CONFIG_SK_DATA_READY
 944
 945 #
 946 # LN_EXPORT_KMAP_TO_PAGE
 947 #
 948 # 3.10 Export kmap_to_page
 949 #
 950 AC_DEFUN([LN_EXPORT_KMAP_TO_PAGE], [
 951 LB_CHECK_EXPORT([kmap_to_page], [mm/highmem.c],
 952         [AC_DEFINE(HAVE_KMAP_TO_PAGE, 1,
 953                 [kmap_to_page is exported by the kernel])])
 954 ]) # LN_EXPORT_KMAP_TO_PAGE
 955
 956 #
 957 # LN_HAVE_HYPERVISOR_IS_TYPE
 958 #
 959 # 4.14 commit 79cc74155218316b9a5d28577c7077b2adba8e58
 960 # x86/paravirt: Provide a way to check for hypervisors
 961 #
 962 AC_DEFUN([LN_SRC_HAVE_HYPERVISOR_IS_TYPE], [
 963         LB2_LINUX_TEST_SRC([hypervisor_is_type_exists], [
 964                 #include <asm/hypervisor.h>
 965         ],[
 966                 (void)hypervisor_is_type(X86_HYPER_NATIVE);
 967         ],[-Werror])
 968 ])
 969 AC_DEFUN([LN_HAVE_HYPERVISOR_IS_TYPE], [
 970         AC_MSG_CHECKING([if hypervisor_is_type function is available])
 971         LB2_LINUX_TEST_RESULT([hypervisor_is_type_exists], [
 972                 AC_DEFINE(HAVE_HYPERVISOR_IS_TYPE, 1,
 973                         [hypervisor_is_type function exists])
 974         ])
 975 ]) # LN_HAVE_HYPERVISOR_IS_TYPE
 976
 977 #
 978 # LN_HAVE_ORACLE_OFED_EXTENSIONS
 979 #
 980 # Oracle UEK 5
 981 #
 982 AC_DEFUN([LN_SRC_HAVE_ORACLE_OFED_EXTENSIONS], [
 983         LB2_LINUX_TEST_SRC([oracle_ofed_ext], [
 984                 #include <rdma/ib_fmr_pool.h>
 985         ],[
 986                 struct ib_fmr_pool_param param = {
 987                         .relaxed           = 0
 988                 };
 989                 (void)param;
 990         ],[
 991                 AC_DEFINE(HAVE_ORACLE_OFED_EXTENSIONS, 1,
 992                         [if Oracle OFED Extensions are enabled])
 993         ])
 994 ])
 995 AC_DEFUN([LN_HAVE_ORACLE_OFED_EXTENSIONS], [
 996         AC_MSG_CHECKING([if Oracle OFED Extensions are enabled])
 997         LB2_LINUX_TEST_RESULT([oracle_ofed_ext], [
 998                 AC_DEFINE(HAVE_ORACLE_OFED_EXTENSIONS, 1,
 999                         [if Oracle OFED Extensions are enabled])
1000         ])
1001 ]) # LN_HAVE_ORACLE_OFED_EXTENSIONS
1002
1003 #
1004 # LN_CONFIG_SOCK_GETNAME
1005 #
1006 # 4.17 commit 9b2c45d479d0fb8647c9e83359df69162b5fbe5f getname()
1007 # does not take the length *int argument and returns the length
1008 #
1009 AC_DEFUN([LN_SRC_CONFIG_SOCK_GETNAME], [
1010         LB2_LINUX_TEST_SRC([kern_sock_getname_2args], [
1011                 #include <linux/net.h>
1012         ],[
1013                 kernel_getsockname(NULL, NULL);
1014         ],[-Werror])
1015 ])
1016 AC_DEFUN([LN_CONFIG_SOCK_GETNAME], [
1017         AC_MSG_CHECKING([if 'getname' has two args])
1018         LB2_LINUX_TEST_RESULT([kern_sock_getname_2args], [
1019                 AC_DEFINE(HAVE_KERN_SOCK_GETNAME_2ARGS, 1,
1020                         ['getname' has two args])
1021         ])
1022 ]) # LN_CONFIG_SOCK_GETNAME
1023
1024 #
1025 # LN_HAVE_IN_DEV_FOR_EACH_IFA_RTNL
1026 #
1027 # kernel 5.3 commit ef11db3310e272d3d8dbe8739e0770820dd20e52
1028 # and kernel 4.18.0-193.el8:
1029 # added in_dev_for_each_ifa_rtnl and in_dev_for_each_ifa_rcu
1030 # and removed for_ifa and endfor_ifa.
1031 # Use the _rntl variant as the current locking is rtnl.
1032 #
1033 AC_DEFUN([LN_SRC_HAVE_IN_DEV_FOR_EACH_IFA_RTNL], [
1034         LB2_LINUX_TEST_SRC([in_dev_for_each_ifa_rtnl_test], [
1035                 #include <linux/inetdevice.h>
1036         ],[
1037                 const struct in_ifaddr *ifa = NULL;
1038                 struct in_device *in_dev = NULL;
1039
1040                 in_dev_for_each_ifa_rtnl(ifa, in_dev) {}
1041         ],[-Werror])
1042 ])
1043 AC_DEFUN([LN_HAVE_IN_DEV_FOR_EACH_IFA_RTNL], [
1044         AC_MSG_CHECKING([if 'in_dev_for_each_ifa_rtnl' is defined])
1045         LB2_LINUX_TEST_RESULT([in_dev_for_each_ifa_rtnl_test], [
1046                 AC_DEFINE(HAVE_IN_DEV_FOR_EACH_IFA_RTNL, 1,
1047                         ['in_dev_for_each_ifa_rtnl' is defined])
1048         ])
1049 ]) # LN_HAVE_IN_DEV_FOR_EACH_IFA_RTNL
1050
1051 #
1052 # LN_USR_RDMA
1053 #
1054 #
1055 AC_DEFUN([LN_USR_RDMA], [
1056 AC_MSG_CHECKING([if RDMA_PS_TCP exists])
1057 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1058         #include <rdma/rdma_user_cm.h>
1059
1060         int main(void) {
1061                 int x = (int)RDMA_PS_TCP;
1062                 return x;
1063         }
1064 ])],[
1065         AC_DEFINE(HAVE_USRSPC_RDMA_PS_TCP, 1,
1066                 [RDMA_PS_TCP exists])
1067 ])
1068 ]) # LN_USR_RDMA
1069
1070
1071 AC_DEFUN([LN_PROG_LINUX_SRC], [
1072         LN_CONFIG_O2IB_SRC
1073         LN_SRC_CONFIG_STRSCPY_EXISTS
1074         # 3.15
1075         LN_SRC_CONFIG_SK_DATA_READY
1076         # 4.x
1077         LN_SRC_CONFIG_SOCK_CREATE_KERN
1078         # 4.14
1079         LN_SRC_HAVE_HYPERVISOR_IS_TYPE
1080         LN_SRC_HAVE_ORACLE_OFED_EXTENSIONS
1081         # 4.17
1082         LN_SRC_CONFIG_SOCK_GETNAME
1083         # 5.3 and 4.18.0-193.el8
1084         LN_SRC_HAVE_IN_DEV_FOR_EACH_IFA_RTNL
1085 ])
1086
1087 AC_DEFUN([LN_PROG_LINUX_RESULTS], [
1088         LN_CONFIG_O2IB_RESULTS
1089         LN_CONFIG_STRSCPY_EXISTS
1090         # 3.15
1091         LN_CONFIG_SK_DATA_READY
1092         # 4.x
1093         LN_CONFIG_SOCK_CREATE_KERN
1094         # 4.14
1095         LN_HAVE_HYPERVISOR_IS_TYPE
1096         LN_HAVE_ORACLE_OFED_EXTENSIONS
1097         # 4.17
1098         LN_CONFIG_SOCK_GETNAME
1099         # 5.3 and 4.18.0-193.el8
1100         LN_HAVE_IN_DEV_FOR_EACH_IFA_RTNL
1101 ])
1102
1103 #
1104 # LN_PROG_LINUX
1105 #
1106 # LNet linux kernel checks
1107 #
1108 AC_DEFUN([LN_PROG_LINUX], [
1109 AC_MSG_NOTICE([LNet kernel checks
1110 ==============================================================================])
1111
1112 LN_CONFIG_BACKOFF
1113 LN_CONFIG_O2IB
1114 LN_CONFIG_GNILND
1115 LN_CONFIG_KFILND
1116 # 3.10 - Check export
1117 LN_EXPORT_KMAP_TO_PAGE
1118 ]) # LN_PROG_LINUX
1119
1120 #
1121 # LN_PATH_DEFAULTS
1122 #
1123 # default paths for installed files
1124 #
1125 AC_DEFUN([LN_PATH_DEFAULTS], [
1126 ]) # LN_PATH_DEFAULTS
1127
1128 #
1129 # LN_CONFIGURE
1130 #
1131 # other configure checks
1132 #
1133 AC_DEFUN([LN_CONFIGURE], [
1134 AC_MSG_NOTICE([LNet core checks
1135 ==============================================================================])
1136
1137 AC_ARG_WITH([cuda],
1138         AS_HELP_STRING([--with-cuda=path],
1139                         [Use a CUDA sources.]),
1140         [LB_ARG_CANON_PATH([cuda], [CUDA_PATH])],
1141         [CUDA_PATH=`ls -d1 /usr/src/nvidia-*/nvidia/ | tail -1`]
1142 )
1143
1144 AC_ARG_WITH([gds],
1145         AS_HELP_STRING([--with-gds=path],
1146                         [Use a gds sources.]),
1147         [LB_ARG_CANON_PATH([gds], [GDS_PATH])],
1148         [GDS_PATH=`ls -d1 /usr/src/nvidia-fs* | tail -1`]
1149 )
1150
1151 AS_IF([test -n "${CUDA_PATH}" && test -n "${GDS_PATH}"],[
1152 LB_CHECK_FILE([$CUDA_PATH/nv-p2p.h],
1153         [
1154         AC_MSG_RESULT([CUDA path is $CUDA_PATH])
1155         AC_SUBST(CUDA_PATH)
1156         ],
1157         [AC_MSG_ERROR([CUDA sources don't found. nv-p2p.h don't exit])]
1158 )
1159
1160 LB_CHECK_FILE([$GDS_PATH/nvfs-dma.h],
1161         [
1162         LB_CHECK_FILE([$GDS_PATH/config-host.h], [
1163         AC_MSG_RESULT([GDS path is $GDS_PATH])
1164         AC_SUBST(GDS_PATH)
1165         AC_DEFINE(WITH_GDS, 1, "GDS build enabled")
1166         ], [])
1167         ],
1168         [])
1169 ],[
1170         AC_MSG_WARN([CUDA or GDS sources not found. GDS support disabled])
1171 ]
1172 )
1173
1174 # lnet/utils/lnetconfig/liblnetconfig_netlink.c
1175 AS_IF([test "x$enable_dist" = xno], [
1176         PKG_CHECK_MODULES(LIBNL3, [libnl-genl-3.0 >= 3.1])
1177 ])
1178
1179 AC_CHECK_LIB([nl-3], [nla_get_s32], [
1180         AC_DEFINE(HAVE_NLA_GET_S32, 1,
1181                 [libnl3 supports nla_get_s32])
1182         ], [
1183 ])
1184
1185 AC_CHECK_LIB([nl-3], [nla_get_s64], [
1186         AC_DEFINE(HAVE_NLA_GET_S64, 1,
1187                 [libnl3 supports nla_get_s64])
1188         ], [
1189 ])
1190
1191 #
1192 # LN_USR_NLMSGERR
1193 #
1194 AC_DEFUN([LN_USR_NLMSGERR], [
1195 AC_MSG_CHECKING([if 'enum nlmsgerr_attrs' exists])
1196 AC_COMPILE_IFELSE([AC_LANG_SOURCE([
1197         #include <linux/netlink.h>
1198
1199         int main(void) {
1200                 int x = (int)NLMSGERR_ATTR_MAX;
1201                 return x;
1202         }
1203 ])],[
1204         AC_DEFINE(HAVE_USRSPC_NLMSGERR, 1,
1205                 ['enum nlmsgerr_attrs' exists])
1206 ])
1207 ]) # LN_USR_NLMGSERR
1208
1209 # lnet/utils/portals.c
1210 AC_CHECK_HEADERS([netdb.h])
1211 AC_CHECK_FUNCS([gethostbyname])
1212
1213 # lnet/utils/wirecheck.c
1214 AC_CHECK_FUNCS([strnlen])
1215
1216 # --------  Check for required packages  --------------
1217
1218 AC_MSG_CHECKING([whether to enable 'efence' debugging support])
1219 AC_ARG_ENABLE(efence,
1220         AS_HELP_STRING([--enable-efence],
1221                 [use efence library]),
1222         [], [enable_efence="no"])
1223 AC_MSG_RESULT([$enable_efence])
1224
1225 LIBEFENCE=""
1226 AS_IF([test "$enable_efence" = yes], [
1227         LIBEFENCE="-lefence"
1228         AC_DEFINE(HAVE_LIBEFENCE, 1,
1229                 [libefence support is requested])
1230 ])
1231 AC_SUBST(LIBEFENCE)
1232
1233 LN_CONFIG_DLC
1234 LN_USR_RDMA
1235 LN_USR_NLMSGERR
1236 ]) # LN_CONFIGURE
1237
1238 #
1239 # LN_CONDITIONALS
1240 #
1241 # AM_CONDITIONAL defines for lnet
1242 #
1243 AC_DEFUN([LN_CONDITIONALS], [
1244 AM_CONDITIONAL(BUILD_O2IBLND,    test x$O2IBLND = "xo2iblnd")
1245 AM_CONDITIONAL(BUILD_GNILND,     test x$GNILND  = "xgnilnd")
1246 AM_CONDITIONAL(BUILD_KFILND,     test x$KFILND  = "xkfilnd")
1247 ]) # LN_CONDITIONALS
1248
1249 #
1250 # LN_CONFIG_FILES
1251 #
1252 # files that should be generated with AC_OUTPUT
1253 #
1254 AC_DEFUN([LN_CONFIG_FILES], [
1255 AC_CONFIG_FILES([
1256 lnet/Makefile
1257 lnet/autoMakefile
1258 lnet/autoconf/Makefile
1259 lnet/doc/Makefile
1260 lnet/include/Makefile
1261 lnet/include/lnet/Makefile
1262 lnet/include/uapi/linux/lnet/Makefile
1263 lnet/klnds/Makefile
1264 lnet/klnds/autoMakefile
1265 lnet/klnds/o2iblnd/Makefile
1266 lnet/klnds/o2iblnd/autoMakefile
1267 lnet/klnds/gnilnd/Makefile
1268 lnet/klnds/gnilnd/autoMakefile
1269 lnet/klnds/socklnd/Makefile
1270 lnet/klnds/socklnd/autoMakefile
1271 lnet/klnds/kfilnd/Makefile
1272 lnet/klnds/kfilnd/autoMakefile
1273 lnet/lnet/Makefile
1274 lnet/lnet/autoMakefile
1275 lnet/selftest/Makefile
1276 lnet/selftest/autoMakefile
1277 lnet/utils/Makefile
1278 lnet/utils/lnetconfig/Makefile
1279 ])
1280 ]) # LN_CONFIG_FILES