Initial check-in of libibverbs

Signed-off-by: Roland Dreier <roland@topspin.com>

24 files changed, 1083 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..78effef
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,17 @@
+*.o
+*.lo
+configure
+Makefile.in
+autom4te.cache
+aclocal.m4
+stamp-h.in
+config.h.in
+config.log
+config.h
+.libs
+.deps
+libibverbs.spec
+Makefile
+config.status
+stamp-h1
+libtool
diff --git a/AUTHORS b/AUTHORS
new file mode 100644
index 0000000..5c53702
--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1 @@
+Roland Dreier		<roland@topspin.com>
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..ee1a79f
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,378 @@
+This software is available to you under a choice of one of two
+licenses.  You may choose to be licensed under the terms of the the
+OpenIB.org BSD license or the GNU General Public License (GPL) Version
+2, both included below.
+
+Copyright (c) 2004 Topspin Communications.  All rights reserved.
+
+==================================================================
+
+		       OpenIB.org BSD license
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+  * Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+  * Redistributions in binary form must reproduce the above
+    copyright notice, this list of conditions and the following
+    disclaimer in the documentation and/or other materials provided
+    with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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+LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+
+==================================================================
+
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+                       59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ Everyone is permitted to copy and distribute verbatim copies
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+    This program is free software; you can redistribute it and/or modify
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+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
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+    You should have received a copy of the GNU General Public License
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+    Gnomovision version 69, Copyright (C) year name of author
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+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
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+This General Public License does not permit incorporating your program into
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+library.  If this is what you want to do, use the GNU Library General
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diff --git a/ChangeLog b/ChangeLog
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/ChangeLog
diff --git a/INSTALL b/INSTALL
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/INSTALL
diff --git a/Makefile.am b/Makefile.am
new file mode 100644
index 0000000..1c3bec7
--- /dev/null
+++ b/Makefile.am
@@ -0,0 +1,32 @@
+# $Id$
+
+INCLUDES = -I$(srcdir)/include
+
+lib_LTLIBRARIES = src/libibverbs.la
+
+src_libibverbs_la_CFLAGS = -Wall -D_GNU_SOURCE -DDRIVER_PATH=\"$(libdir)/infiniband\"
+
+if HAVE_LD_VERSION_SCRIPT
+    libibverbs_version_script = -Wl,--version-script=$(srcdir)/src/libibverbs.map
+else
+    libibverbs_version_script =
+endif
+
+src_libibverbs_la_SOURCES = src/init.c src/device.c
+src_libibverbs_la_LDFLAGS = -version-info 1 -export-dynamic \
+    $(libibverbs_version_script)
+src_libibverbs_la_DEPENDENCIES = $(srcdir)/src/libibverbs.map
+
+bin_PROGRAMS = examples/ib_drivers
+examples_ib_drivers_SOURCES = examples/driver_list.c
+examples_ib_drivers_LDADD = $(top_builddir)/src/libibverbs.la
+
+libibverbsincludedir = $(includedir)/infiniband
+
+libibverbsinclude_HEADERS = include/infiniband/verbs.h include/infiniband/driver.h
+
+EXTRA_DIST = include/infiniband/verbs.h include/infiniband/driver.h \
+    libibverbs.spec.in
+
+dist-hook: libibverbs.spec
+	cp libibverbs.spec $(distdir)
diff --git a/NEWS b/NEWS
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/NEWS
diff --git a/README b/README
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/README
diff --git a/autogen.sh b/autogen.sh
new file mode 100755
index 0000000..fd47839
--- /dev/null
+++ b/autogen.sh
@@ -0,0 +1,8 @@
+#! /bin/sh
+
+set -x
+aclocal -I config
+libtoolize --force --copy
+autoheader
+automake --foreign --add-missing --copy
+autoconf
diff --git a/config/.gitignore b/config/.gitignore
new file mode 100644
index 0000000..4d4c7b1
--- /dev/null
+++ b/config/.gitignore
@@ -0,0 +1,8 @@
+mkinstalldirs
+depcomp
+compile
+missing
+config.guess
+config.sub
+ltmain.sh
+install-sh
diff --git a/configure.in b/configure.in
new file mode 100644
index 0000000..94d03ff
--- /dev/null
+++ b/configure.in
@@ -0,0 +1,37 @@
+dnl Process this file with autoconf to produce a configure script.
+
+AC_PREREQ(2.57)
+AC_INIT(libsdp, 0.9.0, openib-general@openib.org)
+AC_CONFIG_SRCDIR([src/ibverbs.h])
+AC_CONFIG_AUX_DIR(config)
+AM_CONFIG_HEADER(config.h)
+AM_INIT_AUTOMAKE(libibverbs, 0.9.0)
+
+AM_PROG_LIBTOOL
+
+dnl Checks for programs
+AC_PROG_CC
+
+dnl Checks for libraries
+AC_CHECK_LIB(dl, dlsym)
+AC_CHECK_LIB(sysfs, sysfs_open_class)
+
+dnl Checks for header files.
+AC_CHECK_HEADER(sysfs/libsysfs.h, [],
+    AC_MSG_ERROR([<sysfs/libsysfs.h> not found.  libibverbs requires libsysfs.]))
+AC_HEADER_STDC
+
+dnl Checks for typedefs, structures, and compiler characteristics.
+AC_C_CONST
+
+AC_CACHE_CHECK(whether ld accepts --version-script, ac_cv_version_script,
+    if test -n "`$LD --help < /dev/null 2>/dev/null | grep version-script`"; then
+        ac_cv_version_script=yes
+    else
+        ac_cv_version_script=no
+    fi)
+
+AM_CONDITIONAL(HAVE_LD_VERSION_SCRIPT, test "$ac_cv_version_script" = "yes")
+
+AC_CONFIG_FILES([Makefile libibverbs.spec])
+AC_OUTPUT
diff --git a/examples/.gitignore b/examples/.gitignore
new file mode 100644
index 0000000..01e1ce3
--- /dev/null
+++ b/examples/.gitignore
@@ -0,0 +1,9 @@
+.dirstamp
+ibv_asyncwatch
+ibv_devices
+ibv_devinfo
+ibv_rc_pingpong
+ibv_srq_pingpong
+ibv_uc_pingpong
+ibv_ud_pingpong
+.libs
diff --git a/examples/Makefile.am b/examples/Makefile.am
new file mode 100644
index 0000000..7d58dd1
--- /dev/null
+++ b/examples/Makefile.am
@@ -0,0 +1,6 @@
+INCLUDES = -I$(top_srcdir)/include
+
+bin_PROGRAMS = ib_drivers
+ib_drivers_SOURCES = driver_list.c
+ib_drivers_LDADD = $(top_builddir)/src/libibverbs.la
+
diff --git a/examples/driver_list.c b/examples/driver_list.c
new file mode 100644
index 0000000..a5395d5
--- /dev/null
+++ b/examples/driver_list.c
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2004 Topspin Communications.  All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * $Id$
+ */
+
+#if HAVE_CONFIG_H
+#  include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <endian.h>
+#include <byteswap.h>
+
+#include <infiniband/verbs.h>
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+static inline uint64_t be64_to_cpu(uint64_t x) { return bswap_64(x); }
+#elif __BYTE_ORDER == __BIG_ENDIAN
+static inline uint64_t be64_to_cpu(uint64_t x) { return x; }
+#endif
+
+int main(int argc, char *argv[])
+{
+	struct dlist *dev_list;
+	struct ibv_device *ib_dev;
+
+	dev_list = ibv_get_devices();
+
+	printf("    %-16s\t   node GUID\n", "device");
+	printf("    %-16s\t----------------\n", "------");
+
+	dlist_for_each_data(dev_list, ib_dev, struct ibv_device)
+		printf("    %-16s\t%016llx\n",
+		       ibv_get_device_name(ib_dev),
+		       be64_to_cpu(ibv_get_device_guid(ib_dev)));
+}
diff --git a/include/Makefile.am b/include/Makefile.am
new file mode 100644
index 0000000..9701878
--- /dev/null
+++ b/include/Makefile.am
@@ -0,0 +1,5 @@
+libibverbsincludedir = $(includedir)/infiniband
+
+libibverbsinclude_HEADERS = infiniband/verbs.h infiniband/driver.h
+
+EXTRA_DIST = infiniband/verbs.h infiniband/driver.h
diff --git a/include/infiniband/driver.h b/include/infiniband/driver.h
new file mode 100644
index 0000000..a873621
--- /dev/null
+++ b/include/infiniband/driver.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2004 Topspin Communications.  All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * $Id$
+ */
+
+#ifndef INFINIBAND_DRIVER_H
+#define INFINIBAND_DRIVER_H
+
+#include <sysfs/libsysfs.h>
+
+#include <infiniband/verbs.h>
+
+#ifdef __cplusplus
+#  define BEGIN_C_DECLS extern "C" {
+#  define END_C_DECLS   }
+#else /* !__cplusplus */
+#  define BEGIN_C_DECLS
+#  define END_C_DECLS
+#endif /* __cplusplus */
+
+/*
+ * Device-specific drivers should declare their device init function
+ * as below (the name must be "openib_driver_init"):
+ *
+ * struct ibv_device *openib_driver_init(struct sysfs_class_device *);
+ *
+ * libibverbs will call each driver's openib_driver_init() function
+ * once for each InfiniBand device.  If the device is one that the
+ * driver can support, it should return a struct ibv_device * with the
+ * ops member filled in.  If the driver does not support the device,
+ * it should return NULL from openib_driver_init().
+ */
+ 
+typedef struct ibv_device *(*ibv_driver_init_func)(struct sysfs_class_device *);
+
+#endif /* INFINIBAND_DRIVER_H */
diff --git a/include/infiniband/verbs.h b/include/infiniband/verbs.h
new file mode 100644
index 0000000..aa65232
--- /dev/null
+++ b/include/infiniband/verbs.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2004 Topspin Communications.  All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * $Id$
+ */
+
+#ifndef INFINIBAND_VERBS_H
+#define INFINIBAND_VERBS_H
+
+#include <stdint.h>
+
+#include <sysfs/libsysfs.h>
+
+#ifdef __cplusplus
+#  define BEGIN_C_DECLS extern "C" {
+#  define END_C_DECLS   }
+#else /* !__cplusplus */
+#  define BEGIN_C_DECLS
+#  define END_C_DECLS
+#endif /* __cplusplus */
+
+BEGIN_C_DECLS
+
+struct ibv_device_ops {
+
+};
+
+struct ibv_device {
+	struct sysfs_class_device *dev;
+	struct ibv_driver         *driver;
+	struct ibv_device_ops      ops;
+};
+
+/**
+ * ibv_get_devices - Return list of IB devices
+ */
+extern struct dlist *ibv_get_devices(void);
+
+/**
+ * ibv_get_device_name - Return kernel device name
+ */
+extern const char *ibv_get_device_name(struct ibv_device *device);
+
+/**
+ * ibv_get_device_guid - Return device's node GUID
+ */
+extern uint64_t ibv_get_device_guid(struct ibv_device *device);
+
+END_C_DECLS
+
+#endif /* INFINIBAND_VERBS_H */
diff --git a/libibverbs.spec.in b/libibverbs.spec.in
new file mode 100644
index 0000000..bc3037a
--- /dev/null
+++ b/libibverbs.spec.in
@@ -0,0 +1,53 @@
+# $Id$
+
+%define prefix /usr
+%define ver      @VERSION@
+%define  RELEASE 1
+%define  rel     %{?CUSTOM_RELEASE} %{!?CUSTOM_RELEASE:%RELEASE}
+
+Summary: InfiniBand verbs library
+Name: libibverbs
+Version: %ver
+Release: %rel
+Copyright: Dual GPL/BSD
+Group: System Environment/Libraries
+BuildRoot: %{_tmppath}/%{name}-%{version}-root
+Source: http://openib.org/downloads/%{name}-%{version}.tar.gz
+Url: http://openib.org/
+
+%description
+In conjunction with the OpenIB kernel drivers, libibverbs provides an
+InfiniBand verbs API to userspace applications.
+
+%package devel
+Summary: InfiniBand verbs library development files
+Group: System Environment/Libraries
+
+%description devel
+Static libraries and header files for the OpenIB verbs library.
+
+%prep
+%setup -q
+
+%build
+%configure
+make
+
+%install
+make DESTDIR=${RPM_BUILD_ROOT} install
+# remove unpackaged files from the buildroot
+rm -f $RPM_BUILD_ROOT%{_libdir}/*.la
+
+%clean
+rm -rf $RPM_BUILD_ROOT
+
+%files
+%defattr(-,root,root)
+%{_libdir}/libibverbs*.so.*
+%doc AUTHORS COPYING ChangeLog NEWS README
+
+%files devel
+%defattr(-,root,root)
+%{_libdir}/lib*.so
+%{_libdir}/*.a
+%{prefix}/include/*
diff --git a/src/.gitignore b/src/.gitignore
new file mode 100644
index 0000000..7297cbb
--- /dev/null
+++ b/src/.gitignore
@@ -0,0 +1,3 @@
+*.la
+.dirstamp
+.libs
diff --git a/src/Makefile.am b/src/Makefile.am
new file mode 100644
index 0000000..6a5a8fb
--- /dev/null
+++ b/src/Makefile.am
@@ -0,0 +1,18 @@
+# $Id$
+
+INCLUDES = -I$(top_srcdir)/include
+
+lib_LTLIBRARIES = libibverbs.la
+
+AM_CFLAGS = -Wall -D_GNU_SOURCE -DDRIVER_PATH=\"$(libdir)/infiniband\"
+
+if HAVE_LD_VERSION_SCRIPT
+    libibverbs_version_script = -Wl,--version-script=$(srcdir)/libibverbs.map
+else
+    libibverbs_version_script =
+endif
+
+libibverbs_la_SOURCES = init.c device.c
+libibverbs_la_LDFLAGS = -version-info 1 -export-dynamic \
+    $(libibverbs_version_script)
+libibverbs_la_DEPENDENCIES = libibverbs.map
diff --git a/src/device.c b/src/device.c
new file mode 100644
index 0000000..96d13ff
--- /dev/null
+++ b/src/device.c
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2004 Topspin Communications.  All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * $Id$
+ */
+
+#if HAVE_CONFIG_H
+#  include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <stdio.h>
+#include <netinet/in.h>
+
+#include "ibverbs.h"
+
+struct dlist *ibv_get_devices(void)
+{
+	return device_list;
+}
+
+const char *ibv_get_device_name(struct ibv_device *device)
+{
+	return device->dev->name;
+}
+
+uint64_t ibv_get_device_guid(struct ibv_device *device)
+{
+	struct sysfs_attribute *attr;
+	uint16_t guid[4];
+	int i;
+
+	attr = sysfs_get_classdev_attr(device->dev, "node_guid");
+	if (!attr)
+		return 0;
+
+	if (sscanf(attr->value, "%hx:%hx:%hx:%hx",
+		   guid, guid + 1, guid + 2, guid + 3) != 4)
+		return 0;
+
+	for (i = 0; i < 4; ++i)
+		guid[i] = htons(guid[i]);
+
+	return *(uint64_t *) guid;
+}
diff --git a/src/ibverbs.h b/src/ibverbs.h
new file mode 100644
index 0000000..2dc5646
--- /dev/null
+++ b/src/ibverbs.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2004 Topspin Communications.  All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * $Id$
+ */
+
+#ifndef IB_VERBS_H
+#define IB_VERBS_H
+
+#include <infiniband/verbs.h>
+#include <infiniband/driver.h>
+
+#define HIDDEN		__attribute__((visibility ("hidden")))
+
+#define INIT		__attribute__((constructor))
+#define FINI		__attribute__((destructor))
+
+#define PFX		"libibverbs: "
+
+struct ibv_driver {
+	ibv_driver_init_func init_func;
+};
+
+extern Dlist *device_list;
+
+#endif /* IB_VERBS_H */
diff --git a/src/init.c b/src/init.c
new file mode 100644
index 0000000..2620065
--- /dev/null
+++ b/src/init.c
@@ -0,0 +1,167 @@
+/*
+ * Copyright (c) 2004 Topspin Communications.  All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * $Id$
+ */
+
+#if HAVE_CONFIG_H
+#  include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <stdlib.h>
+#include <string.h>
+#include <glob.h>
+#include <stdio.h>
+#include <dlfcn.h>
+
+#include "ibverbs.h"
+
+#ifndef OPENIB_DRIVER_PATH_ENV
+#  define OPENIB_DRIVER_PATH_ENV "OPENIB_DRIVER_PATH"
+#endif
+
+Dlist *device_list;
+
+static char default_path[] = DRIVER_PATH;
+
+static Dlist *driver_list;
+
+static void load_driver(char *so_path)
+{
+	void *dlhandle;
+	ibv_driver_init_func init_func;
+	struct ibv_driver *driver;
+
+	dlhandle = dlopen(so_path, RTLD_NOW);
+	if (!dlhandle)
+		return;
+
+	dlerror();
+	init_func = dlsym(dlhandle, "openib_driver_init");
+	if (dlerror() != NULL || !init_func) {
+		dlclose(dlhandle);
+		return;
+	}
+
+	driver = malloc(sizeof *driver);
+	if (!driver) {
+		fprintf(stderr, PFX "Fatal: couldn't allocate driver for %s\n", so_path);
+		abort();
+	}
+
+	driver->init_func = init_func;
+	dlist_push(driver_list, driver);
+}
+
+static void find_drivers(char *dir)
+{
+	size_t len = strlen(dir);
+	glob_t so_glob;
+	char *pat;
+	int ret;
+	int i;
+
+	if (!len)
+		return;
+
+	while (len && dir[len - 1] == '/')
+		dir[--len] = '\0';
+
+	asprintf(&pat, "%s/*.so", dir);
+
+	ret = glob(pat, 0, NULL, &so_glob);
+	if (ret) {
+		if (ret != GLOB_NOMATCH)
+			fprintf(stderr, PFX "Warning: couldn't search %s\n", pat);
+		return;
+	}
+
+	for (i = 0; i < so_glob.gl_pathc; ++i)
+		load_driver(so_glob.gl_pathv[i]);
+}
+
+static void init_drivers(struct sysfs_class_device *ib_dev)
+{
+	struct ibv_driver *driver;
+	struct ibv_device *dev;
+
+	dlist_for_each_data(driver_list, driver, struct ibv_driver) {
+		dev = driver->init_func(ib_dev);
+		if (dev) {
+			dev->dev    	    = ib_dev;
+			dev->driver 	    = driver;
+
+			dlist_push(device_list, dev);
+
+			return;
+		}
+	}
+
+	printf(PFX "Warning: no driver for %s\n", ib_dev->name);
+}
+
+static void INIT ibverbs_init(void)
+{
+	const char *user_path;
+	char *wr_path, *dir;
+	struct sysfs_class *cls;
+	Dlist *ib_dev_list;
+	struct sysfs_class_device *ib_dev;
+
+	driver_list = dlist_new(sizeof (struct ibv_driver));
+	device_list = dlist_new(sizeof (struct ibv_device));
+	if (!driver_list || !device_list)
+		abort();
+
+	user_path = getenv(OPENIB_DRIVER_PATH_ENV);
+	if (user_path) {
+		wr_path = strdupa(user_path);
+		while ((dir = strsep(&wr_path, ";:")))
+			find_drivers(dir);
+	}
+
+	find_drivers(default_path);
+
+	cls = sysfs_open_class("infiniband");
+	if (!cls) {
+		fprintf(stderr, PFX "Fatal: couldn't open infiniband sysfs class.\n");
+		abort();
+	}
+
+	ib_dev_list = sysfs_get_class_devices(cls);
+	if (!ib_dev_list) {
+		fprintf(stderr, PFX "Fatal: no infiniband class devices found.\n");
+		abort();
+	}
+
+	dlist_for_each_data(ib_dev_list, ib_dev, struct sysfs_class_device)
+		init_drivers(ib_dev);
+}
diff --git a/src/libibverbs.map b/src/libibverbs.map
new file mode 100644
index 0000000..61742fa
--- /dev/null
+++ b/src/libibverbs.map
@@ -0,0 +1,7 @@
+IBVERBS_1.0 {
+	global:
+		ibv_get_devices;
+		ibv_get_device_name;
+		ibv_get_device_guid;
+	local: *;
+};