[libvirt] [PATCHv3] build: support libnl-3
Eric Blake
eblake at redhat.com
Thu May 3 20:26:25 UTC 2012
From: Serge Hallyn <serge.hallyn at canonical.com>
configure.ac: check for libnl-3 in addition to libnl-1
src/Makefile.am: link against libnl when needed
src/util/virnetlink.c:
support libnl3 api. To minimize impact on code flow, wrap the
differences under the virNetlink* namespace.
Unfortunately libnl3 moves netlink/msg.h to
/usr/include/libnl3/netlink/msg.h, so the LIBNL_CFLAGS need to be added
to a bunch of places where they weren't needed with libnl1.
Signed-off-by: Serge Hallyn <serge.hallyn at canonical.com>
Signed-off-by: Eric Blake <eblake at redhat.com>
---
So far, I've tested under libnl-1 on Fedora 16. I'm also firing up my
Ubuntu VM and upgrading it to 12.04, if I can reproduce the build
failure pre-patch and a successful build post-patch, then I will push
this under the build-breaker rule. Or I will push it if I get a
positive review in the meantime.
configure.ac | 25 +++++++++++++++++++------
src/Makefile.am | 15 ++++++++++-----
src/util/virnetlink.c | 24 +++++++++++++++++-------
3 files changed, 46 insertions(+), 18 deletions(-)
diff --git a/configure.ac b/configure.ac
index a819898..30eff91 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2626,18 +2626,31 @@ AM_CONDITIONAL([WITH_VIRTUALPORT], [test "$with_virtualport" = "yes"])
dnl netlink library
+LIBNL_ROUTE3_CFLAGS=""
+LIBNL_ROUTE3_LIBS=""
LIBNL_CFLAGS=""
LIBNL_LIBS=""
have_libnl=no
if test "$with_linux" = "yes"; then
- PKG_CHECK_MODULES([LIBNL], [libnl-1 >= $LIBNL_REQUIRED], [
+ PKG_CHECK_MODULES([LIBNL], [libnl-3.0], [
have_libnl=yes
- AC_DEFINE_UNQUOTED([HAVE_LIBNL], 1, [whether the netlink library is available])
- ], [
- if test "$with_macvtap" = "yes"; then
- AC_MSG_ERROR([libnl-devel >= $LIBNL_REQUIRED is required for macvtap support])
- fi
+ AC_DEFINE([HAVE_LIBNL3], [1], [Use libnl-3.0])
+ AC_DEFINE([HAVE_LIBNL], [1], [whether the netlink library is available])
+ PKG_CHECK_MODULES([LIBNL_ROUTE3], [libnl-route-3.0])
+ LIBNL_CFLAGS="$LIBNL_CFLAGS $LIBNL_ROUTE3_CFLAGS"
+ LIBNL_LIBS="$LIBNL_LIBS $LIBNL_ROUTE3_LIBS"
+ ], [PKG_CHECK_MODULES([LIBNL], [libnl-1 >= $LIBNL_REQUIRED], [
+ have_libnl=yes
+ AC_DEFINE_UNQUOTED([HAVE_LIBNL], [1],
+ [whether the netlink library is available])
+ AC_DEFINE_UNQUOTED([HAVE_LIBNL1], [1],
+ [whether the netlink v1 library is available])
+ ], [
+ if test "$with_macvtap" = "yes"; then
+ AC_MSG_ERROR([libnl-devel >= $LIBNL_REQUIRED is required for macvtap support])
+ fi
+ ])
])
fi
AM_CONDITIONAL([HAVE_LIBNL], [test "$have_libnl" = "yes"])
diff --git a/src/Makefile.am b/src/Makefile.am
index e48dfa5..0dadc29 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -809,12 +809,14 @@ endif
libvirt_driver_qemu_la_CFLAGS = $(NUMACTL_CFLAGS) \
$(GNUTLS_CFLAGS) \
$(LIBXML_CFLAGS) \
+ $(LIBNL_CFLAGS) \
-I$(top_srcdir)/src/conf $(AM_CFLAGS)
libvirt_driver_qemu_la_LDFLAGS = $(AM_LDFLAGS)
libvirt_driver_qemu_la_LIBADD = $(NUMACTL_LIBS) \
$(CAPNG_LIBS) \
$(GNUTLS_LIBS) \
- $(LIBXML_LIBS)
+ $(LIBXML_LIBS) \
+ $(LIBNL_LIBS)
if WITH_DRIVER_MODULES
libvirt_driver_qemu_la_LIBADD += ../gnulib/lib/libgnu.la
libvirt_driver_qemu_la_LDFLAGS += -module -avoid-version
@@ -840,8 +842,9 @@ noinst_LTLIBRARIES += libvirt_driver_lxc.la
#libvirt_la_BUILT_LIBADD += libvirt_driver_lxc.la
endif
libvirt_driver_lxc_la_CFLAGS = \
+ $(LIBNL_CFLAGS) \
-I$(top_srcdir)/src/conf $(AM_CFLAGS)
-libvirt_driver_lxc_la_LIBADD = $(CAPNG_LIBS)
+libvirt_driver_lxc_la_LIBADD = $(CAPNG_LIBS) $(LIBNL_LIBS)
if WITH_SECDRIVER_SELINUX
libvirt_driver_lxc_la_LIBADD += $(SELINUX_LIBS)
endif
@@ -941,9 +944,10 @@ noinst_LTLIBRARIES += libvirt_driver_network.la
#libvirt_la_BUILT_LIBADD += libvirt_driver_network.la
endif
libvirt_driver_network_la_CFLAGS = \
+ $(LIBNL_CFLAGS) \
-I$(top_srcdir)/src/conf $(AM_CFLAGS)
if WITH_DRIVER_MODULES
-libvirt_driver_network_la_LIBADD = ../gnulib/lib/libgnu.la
+libvirt_driver_network_la_LIBADD = ../gnulib/lib/libgnu.la $(LIBNL_LIBS)
libvirt_driver_network_la_LDFLAGS = -module -avoid-version $(AM_LDFLAGS)
endif
libvirt_driver_network_la_SOURCES = $(NETWORK_DRIVER_SOURCES)
@@ -1086,9 +1090,9 @@ libvirt_la_BUILT_LIBADD += libvirt_driver_nwfilter.la
noinst_LTLIBRARIES += libvirt_driver_nwfilter.la
endif
libvirt_driver_nwfilter_la_CFLAGS = $(LIBPCAP_CFLAGS) \
- -I$(top_srcdir)/src/conf $(AM_CFLAGS)
+ -I$(top_srcdir)/src/conf $(LIBNL_CFLAGS) $(AM_CFLAGS)
libvirt_driver_nwfilter_la_LDFLAGS = $(LD_AMFLAGS)
-libvirt_driver_nwfilter_la_LIBADD = $(LIBPCAP_LIBS)
+libvirt_driver_nwfilter_la_LIBADD = $(LIBPCAP_LIBS) $(LIBNL_LIBS)
if WITH_DRIVER_MODULES
libvirt_driver_nwfilter_la_LIBADD += ../gnulib/lib/libgnu.la
libvirt_driver_nwfilter_la_LDFLAGS += -module -avoid-version
@@ -1540,6 +1544,7 @@ libvirt_lxc_CFLAGS = \
$(YAJL_CFLAGS) \
$(AUDIT_CFLAGS) \
$(DBUS_CFLAGS) \
+ $(LIBNL_CFLAGS) \
-I$(top_srcdir)/src/conf \
$(AM_CFLAGS)
if HAVE_LIBBLKID
diff --git a/src/util/virnetlink.c b/src/util/virnetlink.c
index b2e9d51..74f43ac 100644
--- a/src/util/virnetlink.c
+++ b/src/util/virnetlink.c
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2010-2011 Red Hat, Inc.
+ * Copyright (C) 2010-2012 Red Hat, Inc.
* Copyright (C) 2010-2012 IBM Corporation
*
* This library is free software; you can redistribute it and/or
@@ -60,6 +60,16 @@ struct virNetlinkEventHandle {
int deleted;
};
+# ifdef HAVE_LIBNL1
+# define virNetlinkAlloc nl_handle_alloc
+# define virNetlinkFree nl_handle_destroy
+typedef struct nl_handle virNetlinkHandle;
+# else
+# define virNetlinkAlloc nl_socket_alloc
+# define virNetlinkFree nl_socket_free
+typedef struct nl_sock virNetlinkHandle;
+# endif
+
typedef struct _virNetlinkEventSrvPrivate virNetlinkEventSrvPrivate;
typedef virNetlinkEventSrvPrivate *virNetlinkEventSrvPrivatePtr;
struct _virNetlinkEventSrvPrivate {
@@ -67,7 +77,7 @@ struct _virNetlinkEventSrvPrivate {
virMutex lock;
int eventwatch;
int netlinkfd;
- struct nl_handle *netlinknh;
+ virNetlinkHandle *netlinknh;
/*Events*/
int handled;
size_t handlesCount;
@@ -121,7 +131,7 @@ int virNetlinkCommand(struct nl_msg *nl_msg,
int fd;
int n;
struct nlmsghdr *nlmsg = nlmsg_hdr(nl_msg);
- struct nl_handle *nlhandle = nl_handle_alloc();
+ virNetlinkHandle *nlhandle = virNetlinkAlloc();
if (!nlhandle) {
virReportSystemError(errno,
@@ -178,7 +188,7 @@ error:
*respbuflen = 0;
}
- nl_handle_destroy(nlhandle);
+ virNetlinkFree(nlhandle);
return rc;
}
@@ -285,7 +295,7 @@ virNetlinkEventServiceStop(void)
virNetlinkEventServerLock(srv);
nl_close(srv->netlinknh);
- nl_handle_destroy(srv->netlinknh);
+ virNetlinkFree(srv->netlinknh);
virEventRemoveHandle(srv->eventwatch);
/* free any remaining clients on the list */
@@ -346,7 +356,7 @@ virNetlinkEventServiceStart(void)
virNetlinkEventServerLock(srv);
/* Allocate a new socket and get fd */
- srv->netlinknh = nl_handle_alloc();
+ srv->netlinknh = virNetlinkAlloc();
if (!srv->netlinknh) {
virReportSystemError(errno,
@@ -392,7 +402,7 @@ virNetlinkEventServiceStart(void)
error_server:
if (ret < 0) {
nl_close(srv->netlinknh);
- nl_handle_destroy(srv->netlinknh);
+ virNetlinkFree(srv->netlinknh);
}
error_locked:
virNetlinkEventServerUnlock(srv);
--
1.7.7.6
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