hw/rdma: Implementation of generic rdma device layers

This layer is composed of two sub-modules, backend and resource manager.
Backend sub-module is responsible for all the interaction with IB layers
such as ibverbs and umad (external libraries).
Resource manager is a collection of functions and structures to manage
RDMA resources such as QPs, CQs and MRs.

Reviewed-by: Dotan Barak <[email protected]>
Reviewed-by: Zhu Yanjun <[email protected]>
Signed-off-by: Yuval Shaia <[email protected]>
Signed-off-by: Marcel Apfelbaum <[email protected]>

Makefile.objs

@@ -130,6 +130,7 @@ trace-events-subdirs += hw/block/dataplane
 trace-events-subdirs += hw/char
 trace-events-subdirs += hw/intc
 trace-events-subdirs += hw/net
+trace-events-subdirs += hw/rdma
 trace-events-subdirs += hw/virtio
 trace-events-subdirs += hw/audio
 trace-events-subdirs += hw/misc

configure

@@ -1572,7 +1572,7 @@ disabled with --disable-FEATURE, default is enabled if available:
   hax             HAX acceleration support
   hvf             Hypervisor.framework acceleration support
   whpx            Windows Hypervisor Platform acceleration support
-  rdma            RDMA-based migration support
+  rdma            Enable RDMA-based migration and PVRDMA support
   vde             support for vde network
   netmap          support for netmap network
   linux-aio       Linux AIO support
@@ -2923,15 +2923,16 @@ if test "$rdma" != "no" ; then
 #include <rdma/rdma_cma.h>
 int main(void) { return 0; }
 EOF
-  rdma_libs="-lrdmacm -libverbs"
+  rdma_libs="-lrdmacm -libverbs -libumad"
   if compile_prog "" "$rdma_libs" ; then
     rdma="yes"
+    libs_softmmu="$libs_softmmu $rdma_libs"
   else
     if test "$rdma" = "yes" ; then
         error_exit \
-            " OpenFabrics librdmacm/libibverbs not present." \
+            " OpenFabrics librdmacm/libibverbs/libibumad not present." \
             " Your options:" \
-            "  (1) Fast: Install infiniband packages from your distro." \
+            "  (1) Fast: Install infiniband packages (devel) from your distro." \
             "  (2) Cleanest: Install libraries from www.openfabrics.org" \
             "  (3) Also: Install softiwarp if you don't have RDMA hardware"
     fi

hw/rdma/Makefile.objs

@@ -1,3 +1,3 @@
 ifeq ($(CONFIG_RDMA),y)
-obj-$(CONFIG_PCI) += rdma_utils.o
+obj-$(CONFIG_PCI) += rdma_utils.o rdma_backend.o rdma_rm.o
 endif