LU-12276 lnet: check const parameters for ib_post_send and ib_post_recv

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

diff --git a/lnet/autoconf/lustre-lnet.m4 b/lnet/autoconf/lustre-lnet.m4
index 4ea62ad..1a49733 100644 (file)
--- a/lnet/autoconf/lustre-lnet.m4
+++ b/lnet/autoconf/lustre-lnet.m4
@@ -537,6 +537,32 @@ AS_IF([test $ENABLEO2IB != "no"], [
                          [function ib_inc_rkey exist])
        ])
 
+       # In MOFED 4.6, the second and third parameters for
+       # ib_post_send() and ib_post_recv() are declared with
+       # 'const'.
+       tmp_flags="$EXTRA_KCFLAGS"
+       EXTRA_KCFLAGS="-Werror"
+       LB_CHECK_COMPILE([if 'ib_post_send() and ib_post_recv()' have const parameters],
+       ib_post_send_recv_const, [
+               #ifdef HAVE_COMPAT_RDMA
+               #undef PACKAGE_NAME
+               #undef PACKAGE_TARNAME
+               #undef PACKAGE_VERSION
+               #undef PACKAGE_STRING
+               #undef PACKAGE_BUGREPORT
+               #undef PACKAGE_URL
+               #include <linux/compat-2.6.h>
+               #endif
+               #include <rdma/ib_verbs.h>
+       ],[
+               ib_post_send(NULL, (const struct ib_send_wr *)NULL,
+                            (const struct ib_send_wr **)NULL);
+       ],[
+               AC_DEFINE(HAVE_IB_POST_SEND_RECV_CONST, 1,
+                       [ib_post_send and ib_post_recv have const parameters])
+       ])
+       EXTRA_KCFLAGS="$tmp_flags"
+
        EXTRA_CHECK_INCLUDE=""
 ]) # ENABLEO2IB != "no"
 ]) # LN_CONFIG_O2IB