[Qemu-devel] [PATCH v4 08/16] net: Remove VLANState

[zwu.kernel@gmail.com]

From: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>

VLANState is no longer used and can be removed.

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
---
 net.c         |  127 ++++++++++-----------------------------------------------
 net.h         |    8 ----
 net/socket.c  |    6 +-
 net/tap.c     |    6 +-
 net/tap.h     |    2 +-
 qemu-common.h |    1 -
 6 files changed, 29 insertions(+), 121 deletions(-)

diff --git a/net.c b/net.c
index abf5a3d..eb2ad06 100644
--- a/net.c
+++ b/net.c
@@ -44,7 +44,6 @@
 # define CONFIG_NET_BRIDGE
 #endif
 
-static QTAILQ_HEAD(, VLANState) vlans;
 static QTAILQ_HEAD(, VLANClientState) non_vlan_clients;
 
 int default_net = 1;
@@ -249,11 +248,7 @@ NICState *qemu_new_nic(NetClientInfo *info,
 
 static void qemu_cleanup_vlan_client(VLANClientState *vc)
 {
-    if (vc->vlan) {
-        QTAILQ_REMOVE(&vc->vlan->clients, vc, next);
-    } else {
-        QTAILQ_REMOVE(&non_vlan_clients, vc, next);
-    }
+    QTAILQ_REMOVE(&non_vlan_clients, vc, next);
 
     if (vc->info->cleanup) {
         vc->info->cleanup(vc);
@@ -262,13 +257,11 @@ static void qemu_cleanup_vlan_client(VLANClientState *vc)
 
 static void qemu_free_vlan_client(VLANClientState *vc)
 {
-    if (!vc->vlan) {
-        if (vc->send_queue) {
-            qemu_del_net_queue(vc->send_queue);
-        }
-        if (vc->peer) {
-            vc->peer->peer = NULL;
-        }
+    if (vc->send_queue) {
+        qemu_del_net_queue(vc->send_queue);
+    }
+    if (vc->peer) {
+        vc->peer->peer = NULL;
     }
     g_free(vc->name);
     g_free(vc->model);
@@ -278,7 +271,7 @@ static void qemu_free_vlan_client(VLANClientState *vc)
 void qemu_del_vlan_client(VLANClientState *vc)
 {
     /* If there is a peer NIC, delete and cleanup client, but do not free. */
-    if (!vc->vlan && vc->peer && vc->peer->info->type == NET_CLIENT_TYPE_NIC) {
+    if (vc->peer && vc->peer->info->type == NET_CLIENT_TYPE_NIC) {
         NICState *nic = DO_UPCAST(NICState, nc, vc->peer);
         if (nic->peer_deleted) {
             return;
@@ -294,7 +287,7 @@ void qemu_del_vlan_client(VLANClientState *vc)
     }
 
     /* If this is a peer NIC and peer has already been deleted, free it now. */
-    if (!vc->vlan && vc->peer && vc->info->type == NET_CLIENT_TYPE_NIC) {
+    if (vc->peer && vc->info->type == NET_CLIENT_TYPE_NIC) {
         NICState *nic = DO_UPCAST(NICState, nc, vc);
         if (nic->peer_deleted) {
             qemu_free_vlan_client(vc->peer);
@@ -308,52 +301,25 @@ void qemu_del_vlan_client(VLANClientState *vc)
 void qemu_foreach_nic(qemu_nic_foreach func, void *opaque)
 {
     VLANClientState *nc;
-    VLANState *vlan;
 
     QTAILQ_FOREACH(nc, &non_vlan_clients, next) {
         if (nc->info->type == NET_CLIENT_TYPE_NIC) {
             func(DO_UPCAST(NICState, nc, nc), opaque);
         }
     }
-
-    QTAILQ_FOREACH(vlan, &vlans, next) {
-        QTAILQ_FOREACH(nc, &vlan->clients, next) {
-            if (nc->info->type == NET_CLIENT_TYPE_NIC) {
-                func(DO_UPCAST(NICState, nc, nc), opaque);
-            }
-        }
-    }
 }
 
 int qemu_can_send_packet(VLANClientState *sender)
 {
-    VLANState *vlan = sender->vlan;
-    VLANClientState *vc;
-
-    if (sender->peer) {
-        if (sender->peer->receive_disabled) {
-            return 0;
-        } else if (sender->peer->info->can_receive &&
-                   !sender->peer->info->can_receive(sender->peer)) {
-            return 0;
-        } else {
-            return 1;
-        }
-    }
-
-    if (!sender->vlan) {
+    if (!sender->peer) {
         return 1;
     }
 
-    QTAILQ_FOREACH(vc, &vlan->clients, next) {
-        if (vc == sender) {
-            continue;
-        }
-
-        /* no can_receive() handler, they can always receive */
-        if (vc->info->can_receive && !vc->info->can_receive(vc)) {
-            return 0;
-        }
+    if (sender->peer->receive_disabled) {
+        return 0;
+    } else if (sender->peer->info->can_receive &&
+               !sender->peer->info->can_receive(sender->peer)) {
+        return 0;
     }
     return 1;
 }
@@ -390,34 +356,18 @@ static ssize_t qemu_deliver_packet(VLANClientState *sender,
 
 void qemu_purge_queued_packets(VLANClientState *vc)
 {
-    NetQueue *queue;
-
-    if (!vc->peer && !vc->vlan) {
+    if (!vc->peer) {
         return;
     }
 
-    if (vc->peer) {
-        queue = vc->peer->send_queue;
-    } else {
-        queue = vc->vlan->send_queue;
-    }
-
-    qemu_net_queue_purge(queue, vc);
+    qemu_net_queue_purge(vc->peer->send_queue, vc);
 }
 
 void qemu_flush_queued_packets(VLANClientState *vc)
 {
-    NetQueue *queue;
-
     vc->receive_disabled = 0;
 
-    if (vc->vlan) {
-        queue = vc->vlan->send_queue;
-    } else {
-        queue = vc->send_queue;
-    }
-
-    qemu_net_queue_flush(queue);
+    qemu_net_queue_flush(vc->send_queue);
 }
 
 static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender,
@@ -432,15 +382,11 @@ static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender,
     hex_dump(stdout, buf, size);
 #endif
 
-    if (sender->link_down || (!sender->peer && !sender->vlan)) {
+    if (sender->link_down || !sender->peer) {
         return size;
     }
 
-    if (sender->peer) {
-        queue = sender->peer->send_queue;
-    } else {
-        queue = sender->vlan->send_queue;
-    }
+    queue = sender->peer->send_queue;
 
     return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
 }
@@ -500,15 +446,11 @@ ssize_t qemu_sendv_packet_async(VLANClientState *sender,
 {
     NetQueue *queue;
 
-    if (sender->link_down || (!sender->peer && !sender->vlan)) {
+    if (sender->link_down || !sender->peer) {
         return iov_size(iov, iovcnt);
     }
 
-    if (sender->peer) {
-        queue = sender->peer->send_queue;
-    } else {
-        queue = sender->vlan->send_queue;
-    }
+    queue = sender->peer->send_queue;
 
     return qemu_net_queue_send_iov(queue, sender,
                                    QEMU_NET_PACKET_FLAG_NONE,
@@ -1134,18 +1076,9 @@ static void print_net_client(Monitor *mon, VLANClientState *vc)
 
 void do_info_network(Monitor *mon)
 {
-    VLANState *vlan;
     VLANClientState *vc, *peer;
     net_client_type type;
 
-    QTAILQ_FOREACH(vlan, &vlans, next) {
-        monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
-
-        QTAILQ_FOREACH(vc, &vlan->clients, next) {
-            monitor_printf(mon, "  ");
-            print_net_client(mon, vc);
-        }
-    }
     monitor_printf(mon, "Devices not on any VLAN:\n");
     QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
         peer = vc->peer;
@@ -1164,16 +1097,8 @@ void do_info_network(Monitor *mon)
 
 void qmp_set_link(const char *name, bool up, Error **errp)
 {
-    VLANState *vlan;
     VLANClientState *vc = NULL;
 
-    QTAILQ_FOREACH(vlan, &vlans, next) {
-        QTAILQ_FOREACH(vc, &vlan->clients, next) {
-            if (strcmp(vc->name, name) == 0) {
-                goto done;
-            }
-        }
-    }
     QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
         if (!strcmp(vc->name, name)) {
             goto done;
@@ -1182,7 +1107,7 @@ void qmp_set_link(const char *name, bool up, Error **errp)
 done:
 
     if (!vc) {
-        error_set(errp, QERR_DEVICE_NOT_FOUND, name);
+        qerror_report(QERR_DEVICE_NOT_FOUND, name);
         return;
     }
 
@@ -1206,15 +1131,8 @@ done:
 
 void net_cleanup(void)
 {
-    VLANState *vlan;
     VLANClientState *vc, *next_vc;
 
-    QTAILQ_FOREACH(vlan, &vlans, next) {
-        QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) {
-            qemu_del_vlan_client(vc);
-        }
-    }
-
     QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) {
         qemu_del_vlan_client(vc);
     }
@@ -1286,7 +1204,6 @@ int net_init_clients(void)
 #endif
     }
 
-    QTAILQ_INIT(&vlans);
     QTAILQ_INIT(&non_vlan_clients);
 
     if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, 1) == -1)
diff --git a/net.h b/net.h
index a4ac48d..2482546 100644
--- a/net.h
+++ b/net.h
@@ -64,7 +64,6 @@ struct VLANClientState {
     NetClientInfo *info;
     int link_down;
     QTAILQ_ENTRY(VLANClientState) next;
-    struct VLANState *vlan;
     VLANClientState *peer;
     NetQueue *send_queue;
     char *model;
@@ -80,13 +79,6 @@ typedef struct NICState {
     bool peer_deleted;
 } NICState;
 
-struct VLANState {
-    int id;
-    QTAILQ_HEAD(, VLANClientState) clients;
-    QTAILQ_ENTRY(VLANState) next;
-    NetQueue *send_queue;
-};
-
 VLANClientState *qemu_find_netdev(const char *id);
 VLANClientState *qemu_new_net_client(NetClientInfo *info,
                                      VLANClientState *peer,
diff --git a/net/socket.c b/net/socket.c
index bf7a793..5676bd5 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -536,7 +536,7 @@ static int net_socket_mcast_init(VLANClientState *peer,
 
 }
 
-static int net_socket_udp_init(VLANState *vlan,
+static int net_socket_udp_init(NetClientState *peer,
                                  const char *model,
                                  const char *name,
                                  const char *rhost,
@@ -574,7 +574,7 @@ static int net_socket_udp_init(VLANState *vlan,
         return -1;
     }
 
-    s = net_socket_fd_init(vlan, model, name, fd, 0);
+    s = net_socket_fd_init(peer, model, name, fd, 0);
     if (!s) {
         return -1;
     }
@@ -680,7 +680,7 @@ int net_init_socket(QemuOpts *opts,
                 return -1;
         }
 
-        if (net_socket_udp_init(vlan, "udp", name, udp, localaddr) == -1) {
+        if (net_socket_udp_init(peer, "udp", name, udp, localaddr) == -1) {
             return -1;
         }
     } else {
diff --git a/net/tap.c b/net/tap.c
index 3a68d7e..7dbf643 100644
--- a/net/tap.c
+++ b/net/tap.c
@@ -513,7 +513,7 @@ static int net_bridge_run_helper(const char *helper, const char *bridge)
 }
 
 int net_init_bridge(QemuOpts *opts, Monitor *mon, const char *name,
-                    VLANState *vlan)
+                    NetClientState *peer)
 {
     TAPState *s;
     int fd, vnet_hdr;
@@ -535,7 +535,7 @@ int net_init_bridge(QemuOpts *opts, Monitor *mon, const char *name,
 
     vnet_hdr = tap_probe_vnet_hdr(fd);
 
-    s = net_tap_fd_init(vlan, "bridge", name, fd, vnet_hdr);
+    s = net_tap_fd_init(peer, "bridge", name, fd, vnet_hdr);
     if (!s) {
         close(fd);
         return -1;
@@ -651,7 +651,7 @@ int net_init_tap(QemuOpts *opts, Monitor *mon, const char *name,
         model = "tap";
     }
 
-    s = net_tap_fd_init(vlan, model, name, fd, vnet_hdr);
+    s = net_tap_fd_init(peer, model, name, fd, vnet_hdr);
     if (!s) {
         close(fd);
         return -1;
diff --git a/net/tap.h b/net/tap.h
index c194684..8d949cd 100644
--- a/net/tap.h
+++ b/net/tap.h
@@ -59,6 +59,6 @@ struct vhost_net;
 struct vhost_net *tap_get_vhost_net(VLANClientState *vc);
 
 int net_init_bridge(QemuOpts *opts, Monitor *mon, const char *name,
-                    VLANState *vlan);
+                    NetClientState *peer);
 
 #endif /* QEMU_NET_TAP_H */
diff --git a/qemu-common.h b/qemu-common.h
index cccfb42..9443c7a 100644
--- a/qemu-common.h
+++ b/qemu-common.h
@@ -235,7 +235,6 @@ typedef struct TextConsole TextConsole;
 typedef TextConsole QEMUConsole;
 typedef struct CharDriverState CharDriverState;
 typedef struct MACAddr MACAddr;
-typedef struct VLANState VLANState;
 typedef struct VLANClientState VLANClientState;
 typedef struct i2c_bus i2c_bus;
 typedef struct ISABus ISABus;
-- 
1.7.6