net: move linux code into net/tap-linux.c

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

Makefile

@@ -89,6 +89,7 @@ block-obj-y +=  $(addprefix block/, $(block-nested-y))
 net-obj-y = net.o
 net-nested-y = queue.o checksum.o
 net-nested-$(CONFIG_POSIX) += tap.o
+net-nested-$(CONFIG_LINUX) += tap-linux.o
 net-nested-$(CONFIG_WIN32) += tap-win32.o
 net-nested-$(CONFIG_BSD) += tap-bsd.o
 net-nested-$(CONFIG_SOLARIS) += tap-solaris.o

net/tap-linux.c

+/*
+ * QEMU System Emulator
+ *
+ * Copyright (c) 2003-2008 Fabrice Bellard
+ * Copyright (c) 2009 Red Hat, Inc.
+ *
+ * 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"
+#include "net/tap-linux.h"
+
+#include <net/if.h>
+#include <sys/ioctl.h>
+
+#include "sysemu.h"
+#include "qemu-common.h"
+
+int tap_open(char *ifname, int ifname_size, int *vnet_hdr, int vnet_hdr_required)
+{
+    struct ifreq ifr;
+    int fd, ret;
+
+    TFR(fd = open("/dev/net/tun", O_RDWR));
+    if (fd < 0) {
+        fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
+        return -1;
+    }
+    memset(&ifr, 0, sizeof(ifr));
+    ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
+
+    if (*vnet_hdr) {
+        unsigned int features;
+
+        if (ioctl(fd, TUNGETFEATURES, &features) == 0 &&
+            features & IFF_VNET_HDR) {
+            *vnet_hdr = 1;
+            ifr.ifr_flags |= IFF_VNET_HDR;
+        }
+
+        if (vnet_hdr_required && !*vnet_hdr) {
+            qemu_error("vnet_hdr=1 requested, but no kernel "
+                       "support for IFF_VNET_HDR available");
+            close(fd);
+            return -1;
+        }
+    }
+
+    if (ifname[0] != '\0')
+        pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
+    else
+        pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
+    ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
+    if (ret != 0) {
+        fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
+        close(fd);
+        return -1;
+    }
+    pstrcpy(ifname, ifname_size, ifr.ifr_name);
+    fcntl(fd, F_SETFL, O_NONBLOCK);
+    return fd;
+}

net/tap.c

@@ -38,9 +38,7 @@
 #include "qemu-char.h"
 #include "qemu-common.h"
 
-#ifdef __linux__
 #include "net/tap-linux.h"
-#endif
 
 /* Maximum GSO packet size (64k) plus plenty of room for
  * the ethernet and virtio_net headers
@@ -347,51 +345,6 @@ static TAPState *net_tap_fd_init(VLANState *vlan,
     return s;
 }
 
-int tap_open(char *ifname, int ifname_size, int *vnet_hdr, int vnet_hdr_required)
-{
-    struct ifreq ifr;
-    int fd, ret;
-
-    TFR(fd = open("/dev/net/tun", O_RDWR));
-    if (fd < 0) {
-        fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
-        return -1;
-    }
-    memset(&ifr, 0, sizeof(ifr));
-    ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
-
-    if (*vnet_hdr) {
-        unsigned int features;
-
-        if (ioctl(fd, TUNGETFEATURES, &features) == 0 &&
-            features & IFF_VNET_HDR) {
-            *vnet_hdr = 1;
-            ifr.ifr_flags |= IFF_VNET_HDR;
-        }
-
-        if (vnet_hdr_required && !*vnet_hdr) {
-            qemu_error("vnet_hdr=1 requested, but no kernel "
-                       "support for IFF_VNET_HDR available");
-            close(fd);
-            return -1;
-        }
-    }
-
-    if (ifname[0] != '\0')
-        pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
-    else
-        pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
-    ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
-    if (ret != 0) {
-        fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
-        close(fd);
-        return -1;
-    }
-    pstrcpy(ifname, ifname_size, ifr.ifr_name);
-    fcntl(fd, F_SETFL, O_NONBLOCK);
-    return fd;
-}
-
 static int launch_script(const char *setup_script, const char *ifname, int fd)
 {
     sigset_t oldmask, mask;