LU-6215 o2iblnd: port to new fast reg API introduced in 4.4

[fs/lustre-release.git] / lnet / autoconf / lustre-lnet.m4

diff --git a/lnet/autoconf/lustre-lnet.m4 b/lnet/autoconf/lustre-lnet.m4
index 253d590..221feda 100644 (file)
--- a/lnet/autoconf/lustre-lnet.m4
+++ b/lnet/autoconf/lustre-lnet.m4
@@ -423,6 +423,28 @@ AS_IF([test $ENABLEO2IB != "no"], [
                        [rdma_create_id wants 5 args])
        ])
 ])
+
+# new fast registration API introduced in 4.4
+AS_IF([test $ENABLEO2IB != "no"], [
+       LB_CHECK_COMPILE([if 'ib_map_mr_sg' exists],
+       ib_map_mr_sg, [
+               #ifdef HAVE_COMPAT_RDMA
+               #undef PACKAGE_NAME
+               #undef PACKAGE_TARNAME
+               #undef PACKAGE_VERSION
+               #undef PACKAGE_STRING
+               #undef PACKAGE_BUGREPORT
+               #undef PACKAGE_URL
+               #include <linux/compat-2.6.h>
+               #endif
+               #include <rdma/ib_verbs.h>
+       ],[
+               ib_map_mr_sg(NULL, NULL, 0, 0);
+       ],[
+               AC_DEFINE(HAVE_IB_MAP_MR_SG, 1,
+                       [ib_map_mr_sg exists])
+       ])
+])
 ]) # LN_CONFIG_O2IB
 
 #