diff options
| -rw-r--r-- | docs/qdev-device-use.txt | 3 | ||||
| -rw-r--r-- | hw/core/qdev-properties-system.c | 80 | ||||
| -rw-r--r-- | include/hw/qdev-properties.h | 3 | ||||
| -rw-r--r-- | include/net/net.h | 1 | ||||
| -rw-r--r-- | net/hub.c | 7 | ||||
| -rw-r--r-- | net/net.c | 18 | ||||
| -rw-r--r-- | net/slirp.c | 8 | ||||
| -rw-r--r-- | net/tap.c | 4 | ||||
| -rw-r--r-- | qapi/net.json | 15 | ||||
| -rw-r--r-- | qemu-doc.texi | 51 | ||||
| -rw-r--r-- | qemu-options.hx | 29 |
11 files changed, 58 insertions, 161 deletions
diff --git a/docs/qdev-device-use.txt b/docs/qdev-device-use.txt index 8f188d1d0b..98229b3405 100644 --- a/docs/qdev-device-use.txt +++ b/docs/qdev-device-use.txt @@ -277,9 +277,6 @@ devices and ne2k_isa are. Some PCI devices aren't available with -net nic, e.g. i82558a. -To connect to a VLAN instead of an ordinary host part, replace -netdev=NET-ID by vlan=VLAN. - === Graphics Devices === Host and guest part of graphics devices have always been separate. diff --git a/hw/core/qdev-properties-system.c b/hw/core/qdev-properties-system.c index 1d3ba722fa..8b22fb51c9 100644 --- a/hw/core/qdev-properties-system.c +++ b/hw/core/qdev-properties-system.c @@ -321,86 +321,6 @@ const PropertyInfo qdev_prop_netdev = { .set = set_netdev, }; -/* --- vlan --- */ - -static int print_vlan(DeviceState *dev, Property *prop, char *dest, size_t len) -{ - NetClientState **ptr = qdev_get_prop_ptr(dev, prop); - - if (*ptr) { - int id; - if (!net_hub_id_for_client(*ptr, &id)) { - return snprintf(dest, len, "%d", id); - } - } - - return snprintf(dest, len, "<null>"); -} - -static void get_vlan(Object *obj, Visitor *v, const char *name, void *opaque, - Error **errp) -{ - DeviceState *dev = DEVICE(obj); - Property *prop = opaque; - NetClientState **ptr = qdev_get_prop_ptr(dev, prop); - int32_t id = -1; - - if (*ptr) { - int hub_id; - if (!net_hub_id_for_client(*ptr, &hub_id)) { - id = hub_id; - } - } - - visit_type_int32(v, name, &id, errp); -} - -static void set_vlan(Object *obj, Visitor *v, const char *name, void *opaque, - Error **errp) -{ - DeviceState *dev = DEVICE(obj); - Property *prop = opaque; - NICPeers *peers_ptr = qdev_get_prop_ptr(dev, prop); - NetClientState **ptr = &peers_ptr->ncs[0]; - Error *local_err = NULL; - int32_t id; - NetClientState *hubport; - - if (dev->realized) { - qdev_prop_set_after_realize(dev, name, errp); - return; - } - - visit_type_int32(v, name, &id, &local_err); - if (local_err) { - error_propagate(errp, local_err); - return; - } - if (id == -1) { - *ptr = NULL; - return; - } - if (*ptr) { - error_set_from_qdev_prop_error(errp, -EINVAL, dev, prop, name); - return; - } - - hubport = net_hub_port_find(id); - if (!hubport) { - error_setg(errp, QERR_INVALID_PARAMETER_VALUE, - name, prop->info->name); - return; - } - *ptr = hubport; -} - -const PropertyInfo qdev_prop_vlan = { - .name = "int32", - .description = "Integer VLAN id to connect to", - .print = print_vlan, - .get = get_vlan, - .set = set_vlan, -}; void qdev_prop_set_drive(DeviceState *dev, const char *name, BlockBackend *value, Error **errp) diff --git a/include/hw/qdev-properties.h b/include/hw/qdev-properties.h index b2ad8e9faa..4f60cc88f3 100644 --- a/include/hw/qdev-properties.h +++ b/include/hw/qdev-properties.h @@ -29,7 +29,6 @@ extern const PropertyInfo qdev_prop_bios_chs_trans; extern const PropertyInfo qdev_prop_fdc_drive_type; extern const PropertyInfo qdev_prop_drive; extern const PropertyInfo qdev_prop_netdev; -extern const PropertyInfo qdev_prop_vlan; extern const PropertyInfo qdev_prop_pci_devfn; extern const PropertyInfo qdev_prop_blocksize; extern const PropertyInfo qdev_prop_pci_host_devaddr; @@ -195,8 +194,6 @@ extern const PropertyInfo qdev_prop_off_auto_pcibar; DEFINE_PROP(_n, _s, _f, qdev_prop_string, char*) #define DEFINE_PROP_NETDEV(_n, _s, _f) \ DEFINE_PROP(_n, _s, _f, qdev_prop_netdev, NICPeers) -#define DEFINE_PROP_VLAN(_n, _s, _f) \ - DEFINE_PROP(_n, _s, _f, qdev_prop_vlan, NICPeers) #define DEFINE_PROP_DRIVE(_n, _s, _f) \ DEFINE_PROP(_n, _s, _f, qdev_prop_drive, BlockBackend *) #define DEFINE_PROP_MACADDR(_n, _s, _f) \ diff --git a/include/net/net.h b/include/net/net.h index 1f7341e459..1425960f76 100644 --- a/include/net/net.h +++ b/include/net/net.h @@ -37,7 +37,6 @@ typedef struct NICConf { #define DEFINE_NIC_PROPERTIES(_state, _conf) \ DEFINE_PROP_MACADDR("mac", _state, _conf.macaddr), \ - DEFINE_PROP_VLAN("vlan", _state, _conf.peers), \ DEFINE_PROP_NETDEV("netdev", _state, _conf.peers) @@ -23,8 +23,7 @@ /* * A hub broadcasts incoming packets to all its ports except the source port. - * Hubs can be used to provide independent network segments, also confusingly - * named the QEMU 'vlan' feature. + * Hubs can be used to provide independent emulated network segments. */ typedef struct NetHub NetHub; @@ -345,10 +344,10 @@ void net_hub_check_clients(void) } } if (has_host_dev && !has_nic) { - warn_report("vlan %d with no nics", hub->id); + warn_report("hub %d with no nics", hub->id); } if (has_nic && !has_host_dev) { - warn_report("vlan %d is not connected to host network", hub->id); + warn_report("hub %d is not connected to host network", hub->id); } } } @@ -965,7 +965,6 @@ static int net_client_init1(const void *object, bool is_netdev, Error **errp) const Netdev *netdev; const char *name; NetClientState *peer = NULL; - static bool vlan_warned; if (is_netdev) { netdev = object; @@ -1036,15 +1035,10 @@ static int net_client_init1(const void *object, bool is_netdev, Error **errp) return -1; } - /* Do not add to a vlan if it's a nic with a netdev= parameter. */ + /* Do not add to a hub if it's a nic with a netdev= parameter. */ if (netdev->type != NET_CLIENT_DRIVER_NIC || !opts->u.nic.has_netdev) { - peer = net_hub_add_port(net->has_vlan ? net->vlan : 0, NULL, NULL); - } - - if (net->has_vlan && !vlan_warned) { - error_report("'vlan' is deprecated. Please use 'netdev' instead."); - vlan_warned = true; + peer = net_hub_add_port(0, NULL, NULL); } } @@ -1365,7 +1359,7 @@ void qmp_set_link(const char *name, bool up, Error **errp) * If the peer is a HUBPORT or a backend, we do not change the * link status. * - * This behavior is compatible with qemu vlans where there could be + * This behavior is compatible with qemu hubs where there could be * multiple clients that can still communicate with each other in * disconnected mode. For now maintain this compatibility. */ @@ -1502,11 +1496,12 @@ static int net_param_nic(void *dummy, QemuOpts *opts, Error **errp) g_free(mac); if (ret) { error_setg(errp, "invalid syntax for ethernet address"); - return -1; + goto out; } if (is_multicast_ether_addr(ni->macaddr.a)) { error_setg(errp, "NIC cannot have multicast MAC address"); - return -1; + ret = -1; + goto out; } } qemu_macaddr_default_if_unset(&ni->macaddr); @@ -1518,6 +1513,7 @@ static int net_param_nic(void *dummy, QemuOpts *opts, Error **errp) nb_nics++; } +out: g_free(nd_id); return ret; } diff --git a/net/slirp.c b/net/slirp.c index 8991816bbf..692252445a 100644 --- a/net/slirp.c +++ b/net/slirp.c @@ -415,7 +415,7 @@ static SlirpState *slirp_lookup(Monitor *mon, const char *hub_id, if (hub_id) { nc = net_hub_find_client_by_name(strtol(hub_id, NULL, 0), name); if (!nc) { - monitor_printf(mon, "unrecognized (vlan-id, stackname) pair\n"); + monitor_printf(mon, "unrecognized (hub-id, stackname) pair\n"); return NULL; } } else { @@ -870,9 +870,9 @@ void hmp_info_usernet(Monitor *mon, const QDict *qdict) QTAILQ_FOREACH(s, &slirp_stacks, entry) { int id; - bool got_vlan_id = net_hub_id_for_client(&s->nc, &id) == 0; - monitor_printf(mon, "VLAN %d (%s):\n", - got_vlan_id ? id : -1, + bool got_hub_id = net_hub_id_for_client(&s->nc, &id) == 0; + monitor_printf(mon, "Hub %d (%s):\n", + got_hub_id ? id : -1, s->nc.name); slirp_connection_info(s->slirp, mon); } @@ -766,10 +766,10 @@ 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; } diff --git a/qapi/net.json b/qapi/net.json index 9117c56972..b4fe4b660b 100644 --- a/qapi/net.json +++ b/qapi/net.json @@ -209,7 +209,7 @@ ## # @NetdevTapOptions: # -# Connect the host TAP network interface name to the VLAN. +# Used to configure a host TAP network interface backend. # # @ifname: interface name # @@ -267,8 +267,8 @@ ## # @NetdevSocketOptions: # -# Connect the VLAN to a remote VLAN in another QEMU virtual machine using a TCP -# socket connection. +# Socket netdevs are used to establish a network connection to another +# QEMU virtual machine via a TCP socket. # # @fd: file descriptor of an already opened socket # @@ -296,7 +296,7 @@ ## # @NetdevL2TPv3Options: # -# Connect the VLAN to Ethernet over L2TPv3 Static tunnel +# Configure an Ethernet over L2TPv3 tunnel. # # @src: source address # @@ -352,7 +352,7 @@ ## # @NetdevVdeOptions: # -# Connect the VLAN to a vde switch running on the host. +# Connect to a vde switch running on the host. # # @sock: socket path # @@ -490,8 +490,6 @@ # # Captures the configuration of a network device; legacy. # -# @vlan: vlan number -# # @id: identifier for monitor commands # # @name: identifier for monitor commands, ignored if @id is present @@ -499,10 +497,11 @@ # @opts: device type specific properties (legacy) # # Since: 1.2 +# +# 'vlan' - removed with 2.12 ## { 'struct': 'NetLegacy', 'data': { - '*vlan': 'int32', '*id': 'str', '*name': 'str', 'opts': 'NetLegacyOptions' } } diff --git a/qemu-doc.texi b/qemu-doc.texi index 715bd336b4..0e0e0ae72b 100644 --- a/qemu-doc.texi +++ b/qemu-doc.texi @@ -715,20 +715,12 @@ state is not saved or restored properly (in particular USB). @node pcsys_network @section Network emulation -QEMU can simulate several network cards (PCI or ISA cards on the PC -target) and can connect them to an arbitrary number of Virtual Local -Area Networks (VLANs). Host TAP devices can be connected to any QEMU -VLAN. VLAN can be connected between separate instances of QEMU to -simulate large networks. For simpler usage, a non privileged user mode -network stack can replace the TAP device to have a basic network -connection. - -@subsection VLANs - -QEMU simulates several VLANs. A VLAN can be symbolised as a virtual -connection between several network devices. These devices can be for -example QEMU virtual Ethernet cards or virtual Host ethernet devices -(TAP devices). +QEMU can simulate several network cards (e.g. PCI or ISA cards on the PC +target) and can connect them to a network backend on the host or an emulated +hub. The various host network backends can either be used to connect the NIC of +the guest to a real network (e.g. by using a TAP devices or the non-privileged +user mode network stack), or to other guest instances running in another QEMU +process (e.g. by using the socket host network backend). @subsection Using TAP network interfaces @@ -764,7 +756,7 @@ network). The virtual network configuration is the following: @example - QEMU VLAN <------> Firewall/DHCP server <-----> Internet + guest (10.0.2.15) <------> Firewall/DHCP server <-----> Internet | (10.0.2.2) | ----> DNS server (10.0.2.3) @@ -799,11 +791,23 @@ When using the @option{'-netdev user,hostfwd=...'} option, TCP or UDP connections can be redirected from the host to the guest. It allows for example to redirect X11, telnet or SSH connections. -@subsection Connecting VLANs between QEMU instances +@subsection Hubs + +QEMU can simulate several hubs. A hub can be thought of as a virtual connection +between several network devices. These devices can be for example QEMU virtual +ethernet cards or virtual Host ethernet devices (TAP devices). You can connect +guest NICs or host network backends to such a hub using the @option{-netdev +hubport} or @option{-nic hubport} options. The legacy @option{-net} option +also connects the given device to the emulated hub with ID 0 (i.e. the default +hub) unless you specify a netdev with @option{-net nic,netdev=xxx} here. -Using the @option{-net socket} option, it is possible to make VLANs -that span several QEMU instances. See @ref{sec_invocation} to have a -basic example. +@subsection Connecting emulated networks between QEMU instances + +Using the @option{-netdev socket} (or @option{-nic socket} or +@option{-net socket}) option, it is possible to create emulated +networks that span several QEMU instances. +See the description of the @option{-netdev socket} option in the +@ref{sec_invocation,,Invocation chapter} to have a basic example. @node pcsys_other_devs @section Other Devices @@ -2846,15 +2850,6 @@ with ``-device ...,netdev=x''), or ``-nic user,smb=/some/dir'' (for embedded NICs). The new syntax allows different settings to be provided per NIC. -@subsection -net vlan (since 2.9.0) - -The ``-net vlan=NN'' argument was mostly used to attach separate -network backends to different virtual NICs. This is the default -behavior for ``-netdev'' and ``-nic''. You can connect multiple -``-netdev'' and ``-nic'' devices to the same network using the -"hubport" network backend, created with ``-netdev hubport,hubid=NN,...'' -and ``-nic hubport,hubid=NN''. - @subsection -drive cyls=...,heads=...,secs=...,trans=... (since 2.10.0) The drive geometry arguments are replaced by the the geometry arguments diff --git a/qemu-options.hx b/qemu-options.hx index b2fefd12b6..abbfa6ae9e 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -2003,7 +2003,7 @@ DEF("netdev", HAS_ARG, QEMU_OPTION_netdev, " configure a vhost-user network, backed by a chardev 'dev'\n" #endif "-netdev hubport,id=str,hubid=n[,netdev=nd]\n" - " configure a hub port on QEMU VLAN 'n'\n", QEMU_ARCH_ALL) + " configure a hub port on the hub with ID 'n'\n", QEMU_ARCH_ALL) DEF("nic", HAS_ARG, QEMU_OPTION_nic, "--nic [tap|bridge|" #ifdef CONFIG_SLIRP @@ -2028,10 +2028,9 @@ DEF("nic", HAS_ARG, QEMU_OPTION_nic, " provided a 'user' network connection)\n", QEMU_ARCH_ALL) DEF("net", HAS_ARG, QEMU_OPTION_net, - "-net nic[,vlan=n][,netdev=nd][,macaddr=mac][,model=type][,name=str][,addr=str][,vectors=v]\n" + "-net nic[,macaddr=mac][,model=type][,name=str][,addr=str][,vectors=v]\n" " configure or create an on-board (or machine default) NIC and\n" - " connect it either to VLAN 'n' or the netdev 'nd' (for pluggable\n" - " NICs please use '-device devtype,netdev=nd' instead)\n" + " connect it to hub 0 (please use -nic unless you need a hub)\n" "-net [" #ifdef CONFIG_SLIRP "user|" @@ -2044,7 +2043,7 @@ DEF("net", HAS_ARG, QEMU_OPTION_net, #ifdef CONFIG_NETMAP "netmap|" #endif - "socket][,vlan=n][,option][,option][,...]\n" + "socket][,option][,option][,...]\n" " old way to initialize a host network interface\n" " (use the -netdev option if possible instead)\n", QEMU_ARCH_ALL) STEXI @@ -2462,17 +2461,14 @@ qemu -m 512 -object memory-backend-file,id=mem,size=512M,mem-path=/hugetlbfs,sha Create a hub port on the emulated hub with ID @var{hubid}. The hubport netdev lets you connect a NIC to a QEMU emulated hub instead of a -single netdev. @code{-net} and @code{-device} with the parameter @option{vlan} -(deprecated), or @code{-nic hubport} can also be used to connect a -network device or a NIC to a hub. Alternatively, you can also connect the -hubport to another netdev with ID @var{nd} by using the @option{netdev=@var{nd}} -option. +single netdev. Alternatively, you can also connect the hubport to another +netdev with ID @var{nd} by using the @option{netdev=@var{nd}} option. -@item -net nic[,vlan=@var{n}][,netdev=@var{nd}][,macaddr=@var{mac}][,model=@var{type}] [,name=@var{name}][,addr=@var{addr}][,vectors=@var{v}] +@item -net nic[,netdev=@var{nd}][,macaddr=@var{mac}][,model=@var{type}] [,name=@var{name}][,addr=@var{addr}][,vectors=@var{v}] @findex -net Legacy option to configure or create an on-board (or machine default) Network -Interface Card(NIC) and connect it either to the emulated hub port ("vlan") -with number @var{n} (@var{n} = 0 is the default), or to the netdev @var{nd}. +Interface Card(NIC) and connect it either to the emulated hub with ID 0 (i.e. +the default hub), or to the netdev @var{nd}. The NIC is an e1000 by default on the PC target. Optionally, the MAC address can be changed to @var{mac}, the device address set to @var{addr} (PCI cards only), and a @var{name} can be assigned for use in monitor commands. @@ -2482,11 +2478,10 @@ that the card should have; this option currently only affects virtio cards; set NIC is created. QEMU can emulate several different models of network card. Use @code{-net nic,model=help} for a list of available devices for your target. -@item -net user|tap|bridge|socket|l2tpv3|vde[,...][,vlan=@var{n}][,name=@var{name}] +@item -net user|tap|bridge|socket|l2tpv3|vde[,...][,name=@var{name}] Configure a host network backend (with the options corresponding to the same -@option{-netdev} option) and connect it to the emulated hub ("vlan") with the -number @var{n} (default is number 0). Use @var{name} to specify the name of the -hub port. +@option{-netdev} option) and connect it to the emulated hub 0 (the default +hub). Use @var{name} to specify the name of the hub port. ETEXI STEXI |