hw/arm/virt-acpi-build: use PCIE_MMCFG_BUS to retrieve end_bus_number

[mirror_qemu.git] / net / tap.c

diff --git a/net/tap.c b/net/tap.c
index 2b3a36f9b50d644e2ebebd764fccb803156f796b..cc8525f15422511d0082335082559fe593379bc8 100644 (file)
--- a/net/tap.c
+++ b/net/tap.c
@@ -40,6 +40,7 @@
 #include "qemu-common.h"
 #include "qemu/cutils.h"
 #include "qemu/error-report.h"
+#include "qemu/sockets.h"
 
 #include "net/tap.h"
 
@@ -693,6 +694,7 @@ static void net_init_tap_one(const NetdevTapOptions *tap, NetClientState *peer,
                 }
                 return;
             }
+            qemu_set_nonblock(vhostfd);
         } else {
             vhostfd = open("/dev/vhost-net", O_RDWR);
             if (vhostfd < 0) {
@@ -766,10 +768,10 @@ int net_init_tap(const Netdev *netdev, const char *name,
     queues = tap->has_queues ? tap->queues : 1;
     vhostfdname = tap->has_vhostfd ? tap->vhostfd : NULL;
 
-    /* QEMU vlans does not support multiqueue tap, in this case peer is set.
+    /* QEMU hubs do not support multiqueue tap, in this case peer is set.
      * For -netdev, peer is always NULL. */
     if (peer && (tap->has_queues || tap->has_fds || tap->has_vhostfds)) {
-        error_setg(errp, "Multiqueue tap cannot be used with QEMU vlans");
+        error_setg(errp, "Multiqueue tap cannot be used with hubs");
         return -1;
     }
 
@@ -803,7 +805,8 @@ int net_init_tap(const Netdev *netdev, const char *name,
     } else if (tap->has_fds) {
         char **fds;
         char **vhost_fds;
-        int nfds, nvhosts;
+        int nfds = 0, nvhosts = 0;
+        int ret = 0;
 
         if (tap->has_ifname || tap->has_script || tap->has_downscript ||
             tap->has_vnet_hdr || tap->has_helper || tap->has_queues ||
@@ -823,6 +826,7 @@ int net_init_tap(const Netdev *netdev, const char *name,
             if (nfds != nvhosts) {
                 error_setg(errp, "The number of fds passed does not match "
                            "the number of vhostfds passed");
+                ret = -1;
                 goto free_fail;
             }
         }
@@ -831,6 +835,7 @@ int net_init_tap(const Netdev *netdev, const char *name,
             fd = monitor_fd_param(cur_mon, fds[i], &err);
             if (fd == -1) {
                 error_propagate(errp, err);
+                ret = -1;
                 goto free_fail;
             }
 
@@ -841,6 +846,7 @@ int net_init_tap(const Netdev *netdev, const char *name,
             } else if (vnet_hdr != tap_probe_vnet_hdr(fd)) {
                 error_setg(errp,
                            "vnet_hdr not consistent across given tap fds");
+                ret = -1;
                 goto free_fail;
             }
 
@@ -850,21 +856,21 @@ int net_init_tap(const Netdev *netdev, const char *name,
                              vnet_hdr, fd, &err);
             if (err) {
                 error_propagate(errp, err);
+                ret = -1;
                 goto free_fail;
             }
         }
-        g_free(fds);
-        g_free(vhost_fds);
-        return 0;
 
 free_fail:
+        for (i = 0; i < nvhosts; i++) {
+            g_free(vhost_fds[i]);
+        }
         for (i = 0; i < nfds; i++) {
             g_free(fds[i]);
-            g_free(vhost_fds[i]);
         }
         g_free(fds);
         g_free(vhost_fds);
-        return -1;
+        return ret;
     } else if (tap->has_helper) {
         if (tap->has_ifname || tap->has_script || tap->has_downscript ||
             tap->has_vnet_hdr || tap->has_queues || tap->has_vhostfds) {