configure.ac:
Check for libnl-3. If found, find libnl-route-3. If not found,
do the original check to look for libnl-1.
src/util/virnetlink.c:
support libnl3 api. I could play games to make the patch smaller,
but this would just hide what is actually needing to be done at
the expense of clarity.
src/Makefile.am and daemon/Makefile.am:
Add LIBNL_ROUTE3_{LIBS,CFLAGS}
Unfortunately libnl3 moves netlink/msg.h to /usr/include/libnl3/netlink/msg.h,
which is the reason why the LIBNL_CFLAGS need to be added to a bunch of
places where they weren't needed with libnl1. Those spots probaby don't
actually need to also have LIBNL*LIBS added, but while I may be looking at
it wrong, it seemed right to do so.
I haven't gotten as far as to compile this into a package on
ubuntu, but the source does build with libnl-3 as well as with
libnl-1.
Signed-off-by: Serge Hallyn <serge.hallyn@xxxxxxxxxxxxx>
---
configure.ac | 24 ++++++++++++-----
daemon/Makefile.am | 5 +++-
src/Makefile.am | 25 ++++++++++++------
src/util/virnetlink.c | 70 +++++++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 108 insertions(+), 16 deletions(-)
diff --git a/configure.ac b/configure.ac
index a819898..ab40e1d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2626,19 +2626,29 @@ 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])
+ ],
+ 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/daemon/Makefile.am b/daemon/Makefile.am
index 24cce8f..8074803 100644
--- a/daemon/Makefile.am
+++ b/daemon/Makefile.am
@@ -95,6 +95,7 @@ libvirtd_SOURCES = $(DAEMON_SOURCES)
libvirtd_CFLAGS = \
$(LIBXML_CFLAGS) $(GNUTLS_CFLAGS) $(SASL_CFLAGS) \
$(XDR_CFLAGS) $(POLKIT_CFLAGS) $(DBUS_CFLAGS) \
+ $(LIBNL_CFLAGS) $(LIBNL_ROUTE3_CFLAGS) \
$(WARN_CFLAGS) \
$(COVERAGE_CFLAGS) \
-DQEMUD_PID_FILE="\"$(QEMUD_PID_FILE)\"" \
@@ -109,7 +110,9 @@ libvirtd_LDADD = \
$(GNUTLS_LIBS) \
$(SASL_LIBS) \
$(DBUS_LIBS) \
- $(POLKIT_LIBS)
+ $(POLKIT_LIBS) \
+ $(LIBNL_LIBS) \
+ $(LIBNL_ROUTE3_LIBS)
if WITH_DTRACE_PROBES
libvirtd_LDADD += ../src/probes.o
diff --git a/src/Makefile.am b/src/Makefile.am
index e48dfa5..c159c1e 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -576,10 +576,10 @@ libvirt_util_la_SOURCES = \
$(UTIL_SOURCES)
libvirt_util_la_CFLAGS = $(CAPNG_CFLAGS) $(YAJL_CFLAGS) $(LIBNL_CFLAGS) \
$(AM_CFLAGS) $(AUDIT_CFLAGS) $(DEVMAPPER_CFLAGS) \
- $(DBUS_CFLAGS)
+ $(DBUS_CFLAGS) $(LIBNL_ROUTE3_CFLAGS)
libvirt_util_la_LIBADD = $(CAPNG_LIBS) $(YAJL_LIBS) $(LIBNL_LIBS) \
$(THREAD_LIBS) $(AUDIT_LIBS) $(DEVMAPPER_LIBS) \
- $(RT_LIBS) $(DBUS_LIBS)
+ $(RT_LIBS) $(DBUS_LIBS) $(LIBNL_ROUTE3_LIBS)
noinst_LTLIBRARIES += libvirt_conf.la
@@ -809,12 +809,16 @@ endif
libvirt_driver_qemu_la_CFLAGS = $(NUMACTL_CFLAGS) \
$(GNUTLS_CFLAGS) \
$(LIBXML_CFLAGS) \
+ $(LIBNL_CFLAGS) \
+ $(LIBNL_ROUTE3_CFLAGS) \
-I$(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) \
+ $(LIBNL_ROUTE3_LIBS)
if WITH_DRIVER_MODULES
libvirt_driver_qemu_la_LIBADD += ../gnulib/lib/libgnu.la
libvirt_driver_qemu_la_LDFLAGS += -module -avoid-version
@@ -840,8 +844,9 @@ noinst_LTLIBRARIES += libvirt_driver_lxc.la
#libvirt_la_BUILT_LIBADD += libvirt_driver_lxc.la
endif
libvirt_driver_lxc_la_CFLAGS = \
+ $(LIBNL_CFLAGS) $(LIBNL_ROUTE3_CFLAGS) \
-I$(top_srcdir)/src/conf $(AM_CFLAGS)
-libvirt_driver_lxc_la_LIBADD = $(CAPNG_LIBS)
+libvirt_driver_lxc_la_LIBADD = $(CAPNG_LIBS) $(LIBNL_LIBS) $(LIBNL_ROUTE3_LIBS)
if WITH_SECDRIVER_SELINUX
libvirt_driver_lxc_la_LIBADD += $(SELINUX_LIBS)
endif
@@ -941,9 +946,10 @@ noinst_LTLIBRARIES += libvirt_driver_network.la
#libvirt_la_BUILT_LIBADD += libvirt_driver_network.la
endif
libvirt_driver_network_la_CFLAGS = \
+ $(LIBNL_CFLAGS) $(LIBNL_ROUTE3_CFLAGS) \
-I$(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) $(LIBNL_ROUTE3_LIBS)
libvirt_driver_network_la_LDFLAGS = -module -avoid-version $(AM_LDFLAGS)
endif
libvirt_driver_network_la_SOURCES = $(NETWORK_DRIVER_SOURCES)
@@ -1086,9 +1092,10 @@ 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) \
+ $(LIBNL_ROUTE3_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) $(LIBNL_ROUTE3_LIBS)
if WITH_DRIVER_MODULES
libvirt_driver_nwfilter_la_LIBADD += ../gnulib/lib/libgnu.la
libvirt_driver_nwfilter_la_LDFLAGS += -module -avoid-version
@@ -1522,7 +1529,7 @@ libvirt_lxc_LDFLAGS = $(WARN_CFLAGS) $(AM_LDFLAGS)
libvirt_lxc_LDADD = $(CAPNG_LIBS) $(YAJL_LIBS) \
$(LIBXML_LIBS) $(NUMACTL_LIBS) $(THREAD_LIBS) \
$(LIBNL_LIBS) $(AUDIT_LIBS) $(DEVMAPPER_LIBS) \
- $(RT_LIBS) $(DBUS_LIBS) \
+ $(RT_LIBS) $(DBUS_LIBS) $(LIBNL_ROUTE3_LIBS) \
../gnulib/lib/libgnu.la
if WITH_DTRACE_PROBES
libvirt_lxc_LDADD += probes.o
@@ -1540,6 +1547,8 @@ libvirt_lxc_CFLAGS = \
$(YAJL_CFLAGS) \
$(AUDIT_CFLAGS) \
$(DBUS_CFLAGS) \
+ $(LIBNL_CFLAGS) \
+ $(LIBNL_ROUTE3_CFLAGS) \
-I$(top_srcdir)/src/conf \
$(AM_CFLAGS)
if HAVE_LIBBLKID
diff --git a/src/util/virnetlink.c b/src/util/virnetlink.c
index b2e9d51..1d3cd2e 100644
--- a/src/util/virnetlink.c
+++ b/src/util/virnetlink.c
@@ -67,7 +67,11 @@ struct _virNetlinkEventSrvPrivate {
virMutex lock;
int eventwatch;
int netlinkfd;
+#ifdef HAVE_LIBNL1
struct nl_handle *netlinknh;
+#else
+ struct nl_sock *netlinksock;
+#endif
/*Events*/
int handled;
size_t handlesCount;
@@ -121,15 +125,31 @@ int virNetlinkCommand(struct nl_msg *nl_msg,
int fd;
int n;
struct nlmsghdr *nlmsg = nlmsg_hdr(nl_msg);
+#ifdef HAVE_LIBNL1
struct nl_handle *nlhandle = nl_handle_alloc();
+#else
+ struct nl_sock *nlsock = nl_socket_alloc();
+#endif
+#ifdef HAVE_LIBNL1
if (!nlhandle) {
+#else
+ if (!nlsock) {
+#endif
virReportSystemError(errno,
+#ifdef HAVE_LIBNL1
"%s", _("cannot allocate nlhandle for netlink"));
+#else
+ "%s", _("cannot allocate nlsock for netlink"));
+#endif
return -1;
}
+#ifdef HAVE_LIBNL1
if (nl_connect(nlhandle, NETLINK_ROUTE) < 0) {
+#else
+ if (nl_connect(nlsock, NETLINK_ROUTE) < 0) {
+#endif
virReportSystemError(errno,
"%s", _("cannot connect to netlink socket"));
rc = -1;
@@ -140,7 +160,11 @@ int virNetlinkCommand(struct nl_msg *nl_msg,
nlmsg->nlmsg_pid = getpid();
+#ifdef HAVE_LIBNL1
nbytes = nl_send_auto_complete(nlhandle, nl_msg);
+#else
+ nbytes = nl_send_auto_complete(nlsock, nl_msg);
+#endif
if (nbytes < 0) {
virReportSystemError(errno,
"%s", _("cannot send to netlink socket"));
@@ -148,7 +172,11 @@ int virNetlinkCommand(struct nl_msg *nl_msg,
goto error;
}
+#ifdef HAVE_LIBNL1
fd = nl_socket_get_fd(nlhandle);
+#else
+ fd = nl_socket_get_fd(nlsock);
+#endif
FD_ZERO(&readfds);
FD_SET(fd, &readfds);
@@ -165,7 +193,11 @@ int virNetlinkCommand(struct nl_msg *nl_msg,
goto error;
}
+#ifdef HAVE_LIBNL1
*respbuflen = nl_recv(nlhandle, &nladdr, respbuf, NULL);
+#else
+ *respbuflen = nl_recv(nlsock, &nladdr, respbuf, NULL);
+#endif
if (*respbuflen <= 0) {
virReportSystemError(errno,
"%s", _("nl_recv failed"));
@@ -178,7 +210,11 @@ error:
*respbuflen = 0;
}
+#ifdef HAVE_LIBNL1
nl_handle_destroy(nlhandle);
+#else
+ nl_socket_free(nlsock);
+#endif
return rc;
}
@@ -233,7 +269,11 @@ virNetlinkEventCallback(int watch,
int i, length;
bool handled = false;
+#ifdef HAVE_LIBNL1
length = nl_recv(srv->netlinknh, &peer, &msg, &creds);
+#else
+ length = nl_recv(srv->netlinksock, &peer, &msg, &creds);
+#endif
if (length == 0)
return;
@@ -284,8 +324,13 @@ virNetlinkEventServiceStop(void)
return 0;
virNetlinkEventServerLock(srv);
+#ifdef HAVE_LIBNL1
nl_close(srv->netlinknh);
nl_handle_destroy(srv->netlinknh);
+#else
+ nl_close(srv->netlinksock);
+ nl_socket_free(srv->netlinksock);
+#endif
virEventRemoveHandle(srv->eventwatch);
/* free any remaining clients on the list */
@@ -346,21 +391,37 @@ virNetlinkEventServiceStart(void)
virNetlinkEventServerLock(srv);
/* Allocate a new socket and get fd */
+#ifdef HAVE_LIBNL1
srv->netlinknh = nl_handle_alloc();
+#else
+ srv->netlinksock = nl_socket_alloc();
+#endif
+#ifdef HAVE_LIBNL1
if (!srv->netlinknh) {
+#else
+ if (!srv->netlinksock) {
+#endif
virReportSystemError(errno,
"%s", _("cannot allocate nlhandle for virNetlinkEvent server"));
goto error_locked;
}
+#ifdef HAVE_LIBNL1
if (nl_connect(srv->netlinknh, NETLINK_ROUTE) < 0) {
+#else
+ if (nl_connect(srv->netlinksock, NETLINK_ROUTE) < 0) {
+#endif
virReportSystemError(errno,
"%s", _("cannot connect to netlink socket"));
goto error_server;
}
+#ifdef HAVE_LIBNL1
fd = nl_socket_get_fd(srv->netlinknh);
+#else
+ fd = nl_socket_get_fd(srv->netlinksock);
+#endif
if (fd < 0) {
virReportSystemError(errno,
@@ -368,7 +429,11 @@ virNetlinkEventServiceStart(void)
goto error_server;
}
+#ifdef HAVE_LIBNL1
if (nl_socket_set_nonblocking(srv->netlinknh)) {
+#else
+ if (nl_socket_set_nonblocking(srv->netlinksock)) {
+#endif
virReportSystemError(errno, "%s",
_("cannot set netlink socket nonblocking"));
goto error_server;
@@ -391,8 +456,13 @@ virNetlinkEventServiceStart(void)
error_server:
if (ret < 0) {
+#ifdef HAVE_LIBNL1
nl_close(srv->netlinknh);
nl_handle_destroy(srv->netlinknh);
+#else
+ nl_close(srv->netlinksock);
+ nl_socket_free(srv->netlinksock);
+#endif
}
error_locked:
virNetlinkEventServerUnlock(srv);
--
1.7.9.5
--
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