rdma: core logic
Code that does need to be visible is kept
well contained inside this file and this is the only
new additional file to the entire patch.
This file includes the entire protocol and interfaces
required to perform RDMA migration.
Also, the configure and Makefile modifications to link
this file are included.
Full documentation is in docs/rdma.txt
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Chegu Vinod <chegu_vinod@hp.com>
Tested-by: Chegu Vinod <chegu_vinod@hp.com>
Tested-by: Michael R. Hines <mrhines@us.ibm.com>
Signed-off-by: Michael R. Hines <mrhines@us.ibm.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
diff --git a/configure b/configure
index 7c45db2..877a821 100755
--- a/configure
+++ b/configure
@@ -180,6 +180,7 @@
vhost_net="no"
vhost_scsi="no"
kvm="no"
+rdma=""
gprof="no"
debug_tcg="no"
debug="no"
@@ -937,6 +938,10 @@
;;
--enable-gtk) gtk="yes"
;;
+ --enable-rdma) rdma="yes"
+ ;;
+ --disable-rdma) rdma="no"
+ ;;
--with-gtkabi=*) gtkabi="$optarg"
;;
--enable-tpm) tpm="yes"
@@ -1095,6 +1100,8 @@
echo " --disable-slirp disable SLIRP userspace network connectivity"
echo " --disable-kvm disable KVM acceleration support"
echo " --enable-kvm enable KVM acceleration support"
+echo " --disable-rdma disable RDMA-based migration support"
+echo " --enable-rdma enable RDMA-based migration support"
echo " --enable-tcg-interpreter enable TCG with bytecode interpreter (TCI)"
echo " --disable-nptl disable usermode NPTL support"
echo " --enable-nptl enable usermode NPTL support"
@@ -1802,6 +1809,30 @@
fi
##########################################
+# RDMA needs OpenFabrics libraries
+if test "$rdma" != "no" ; then
+ cat > $TMPC <<EOF
+#include <rdma/rdma_cma.h>
+int main(void) { return 0; }
+EOF
+ rdma_libs="-lrdmacm -libverbs"
+ if compile_prog "" "$rdma_libs" ; then
+ rdma="yes"
+ libs_softmmu="$libs_softmmu $rdma_libs"
+ else
+ if test "$rdma" = "yes" ; then
+ error_exit \
+ " OpenFabrics librdmacm/libibverbs not present." \
+ " Your options:" \
+ " (1) Fast: Install infiniband packages from your distro." \
+ " (2) Cleanest: Install libraries from www.openfabrics.org" \
+ " (3) Also: Install softiwarp if you don't have RDMA hardware"
+ fi
+ rdma="no"
+ fi
+fi
+
+##########################################
# VNC TLS/WS detection
if test "$vnc" = "yes" -a \( "$vnc_tls" != "no" -o "$vnc_ws" != "no" \) ; then
cat > $TMPC <<EOF
@@ -3558,6 +3589,7 @@
echo "ATTR/XATTR support $attr"
echo "Install blobs $blobs"
echo "KVM support $kvm"
+echo "RDMA support $rdma"
echo "TCG interpreter $tcg_interpreter"
echo "fdt support $fdt"
echo "preadv support $preadv"
@@ -4046,6 +4078,10 @@
echo "CONFIG_TRACE_DEFAULT=y" >> $config_host_mak
fi
+if test "$rdma" = "yes" ; then
+ echo "CONFIG_RDMA=y" >> $config_host_mak
+fi
+
if test "$tcg_interpreter" = "yes"; then
QEMU_INCLUDES="-I\$(SRC_PATH)/tcg/tci $QEMU_INCLUDES"
elif test "$ARCH" = "sparc64" ; then
@@ -4485,6 +4521,10 @@
echo "config-host.h: subdir-pixman" >> $config_host_mak
fi
+if test "$rdma" = "yes" ; then
+echo "CONFIG_RDMA=y" >> $config_host_mak
+fi
+
if [ "$dtc_internal" = "yes" ]; then
echo "config-host.h: subdir-dtc" >> $config_host_mak
fi
