net: split BSD tap_open() out into net/tap-bsd.c

Signed-off-by: NMark McLoughlin <markmc@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Makefile

@@ -90,6 +90,7 @@ net-obj-y = net.o
 net-nested-y = queue.o checksum.o
 net-nested-$(CONFIG_POSIX) += tap.o
 net-nested-$(CONFIG_WIN32) += tap-win32.o
+net-nested-$(CONFIG_BSD) += tap-bsd.o
 net-obj-y += $(addprefix net/, $(net-nested-y))
 
 ######################################################################

net/tap-bsd.c

+/*
+ * QEMU System Emulator
+ *
+ * Copyright (c) 2003-2008 Fabrice Bellard
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "net/tap.h"
+#incude "qemu-common.h"
+
+#ifdef __NetBSD__
+#include <net/if_tap.h>
+#endif
+
+#if defined(__FreeBSD__) || defined(__DragonFly__)
+#include <libutil.h>
+#else
+#include <util.h>
+#endif
+#elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
+#include <freebsd/stdlib.h>
+
+#if defined(__OpenBSD__)
+#include <util.h>
+#endif
+
+int tap_open(char *ifname, int ifname_size, int *vnet_hdr, int vnet_hdr_required)
+{
+    int fd;
+    char *dev;
+    struct stat s;
+
+    TFR(fd = open("/dev/tap", O_RDWR));
+    if (fd < 0) {
+        fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
+        return -1;
+    }
+
+    fstat(fd, &s);
+    dev = devname(s.st_rdev, S_IFCHR);
+    pstrcpy(ifname, ifname_size, dev);
+
+    fcntl(fd, F_SETFL, O_NONBLOCK);
+    return fd;
+}

net/tap.c

@@ -42,24 +42,6 @@
 #include "net/tap-linux.h"
 #endif
 
-#ifdef __NetBSD__
-#include <net/if_tap.h>
-#endif
-
-#ifdef CONFIG_BSD
-#if defined(__FreeBSD__) || defined(__DragonFly__)
-#include <libutil.h>
-#else
-#include <util.h>
-#endif
-#elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
-#include <freebsd/stdlib.h>
-#endif
-
-#if defined(__OpenBSD__)
-#include <util.h>
-#endif
-
 #ifdef __sun__
 #include <sys/stat.h>
 #include <sys/ethernet.h>
@@ -394,28 +376,7 @@ static TAPState *net_tap_fd_init(VLANState *vlan,
     return s;
 }
 
-#if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
-static int tap_open(char *ifname, int ifname_size,
-                    int *vnet_hdr, int vnet_hdr_required)
-{
-    int fd;
-    char *dev;
-    struct stat s;
-
-    TFR(fd = open("/dev/tap", O_RDWR));
-    if (fd < 0) {
-        fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
-        return -1;
-    }
-
-    fstat(fd, &s);
-    dev = devname(s.st_rdev, S_IFCHR);
-    pstrcpy(ifname, ifname_size, dev);
-
-    fcntl(fd, F_SETFL, O_NONBLOCK);
-    return fd;
-}
-#elif defined(__sun__)
+#ifdef __sun__
 #define TUNNEWPPA       (('T'<<16) | 0x0001)
 /*
  * Allocate TAP device, returns opened fd.
@@ -538,8 +499,7 @@ static int tap_alloc(char *dev, size_t dev_size)
     return tap_fd;
 }
 
-static int tap_open(char *ifname, int ifname_size,
-                    int *vnet_hdr, int vnet_hdr_required)
+int tap_open(char *ifname, int ifname_size, int *vnet_hdr, int vnet_hdr_required)
 {
     char  dev[10]="";
     int fd;
@@ -552,15 +512,13 @@ static int tap_open(char *ifname, int ifname_size,
     return fd;
 }
 #elif defined (_AIX)
-static int tap_open(char *ifname, int ifname_size,
-                    int *vnet_hdr, int vnet_hdr_required)
+int tap_open(char *ifname, int ifname_size, int *vnet_hdr, int vnet_hdr_required)
 {
     fprintf (stderr, "no tap on AIX\n");
     return -1;
 }
 #else
-static int tap_open(char *ifname, int ifname_size,
-                    int *vnet_hdr, int vnet_hdr_required)
+int tap_open(char *ifname, int ifname_size, int *vnet_hdr, int vnet_hdr_required)
 {
     struct ifreq ifr;
     int fd, ret;

net/tap.h

@@ -34,6 +34,8 @@
 
 int net_init_tap(QemuOpts *opts, Monitor *mon, const char *name, VLANState *vlan);
 
+int tap_open(char *ifname, int ifname_size, int *vnet_hdr, int vnet_hdr_required);
+
 int tap_has_ufo(VLANClientState *vc);
 int tap_has_vnet_hdr(VLANClientState *vc);
 void tap_using_vnet_hdr(VLANClientState *vc, int using_vnet_hdr);