[Qemu-devel] [PATCH v6 08/17] 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>
---
 hw/dp8393x.c        |    1 -
 hw/exynos4_boards.c |    2 +-
 hw/highbank.c       |    2 +-
 hw/integratorcp.c   |    2 +-
 hw/mcf5208.c        |    2 +-
 hw/mcf_fec.c        |    1 -
 hw/mips_mipssim.c   |    2 +-
 hw/mips_r4k.c       |    2 +-
 hw/vexpress.c       |    2 +-
 hw/xtensa_lx60.c    |    2 +-
 net.c               |  127 +++++++++------------------------------------------
 net.h               |    8 ---
 net/socket.c        |    6 +-
 net/tap.c           |    6 +-
 net/tap.h           |    2 +-
 qemu-common.h       |    1 -
 16 files changed, 37 insertions(+), 131 deletions(-)

diff --git a/hw/dp8393x.c b/hw/dp8393x.c
index 017d074..3fd7677 100644
--- a/hw/dp8393x.c
+++ b/hw/dp8393x.c
@@ -899,7 +899,6 @@ void dp83932_init(NICInfo *nd, target_phys_addr_t base, int it_shift,
     s->regs[SONIC_SR] = 0x0004; /* only revision recognized by Linux */
 
     s->conf.macaddr = nd->macaddr;
-    s->conf.vlan = nd->vlan;
     s->conf.peer = nd->netdev;
 
     s->nic = qemu_new_nic(&net_dp83932_info, &s->conf, nd->model, nd->name, s);
diff --git a/hw/exynos4_boards.c b/hw/exynos4_boards.c
index e5c2a5f..4bb0a60 100644
--- a/hw/exynos4_boards.c
+++ b/hw/exynos4_boards.c
@@ -81,7 +81,7 @@ static void lan9215_init(uint32_t base, qemu_irq irq)
     SysBusDevice *s;
 
     /* This should be a 9215 but the 9118 is close enough */
-    if (nd_table[0].vlan) {
+    if (nd_table[0].used) {
         qemu_check_nic_model(&nd_table[0], "lan9118");
         dev = qdev_create(NULL, "lan9118");
         qdev_set_nic_properties(dev, &nd_table[0]);
diff --git a/hw/highbank.c b/hw/highbank.c
index 4bdea5d..11aa131 100644
--- a/hw/highbank.c
+++ b/hw/highbank.c
@@ -284,7 +284,7 @@ static void highbank_init(ram_addr_t ram_size,
 
     sysbus_create_simple("sysbus-ahci", 0xffe08000, pic[83]);
 
-    if (nd_table[0].vlan) {
+    if (nd_table[0].used) {
         qemu_check_nic_model(&nd_table[0], "xgmac");
         dev = qdev_create(NULL, "xgmac");
         qdev_set_nic_properties(dev, &nd_table[0]);
diff --git a/hw/integratorcp.c b/hw/integratorcp.c
index deacbf4..d0e2e90 100644
--- a/hw/integratorcp.c
+++ b/hw/integratorcp.c
@@ -493,7 +493,7 @@ static void integratorcp_init(ram_addr_t ram_size,
     sysbus_create_simple("pl050_keyboard", 0x18000000, pic[3]);
     sysbus_create_simple("pl050_mouse", 0x19000000, pic[4]);
     sysbus_create_varargs("pl181", 0x1c000000, pic[23], pic[24], NULL);
-    if (nd_table[0].vlan)
+    if (nd_table[0].used)
         smc91c111_init(&nd_table[0], 0xc8000000, pic[27]);
 
     sysbus_create_simple("pl110", 0xc0000000, pic[22]);
diff --git a/hw/mcf5208.c b/hw/mcf5208.c
index d3ebe8d..ee25b1b 100644
--- a/hw/mcf5208.c
+++ b/hw/mcf5208.c
@@ -236,7 +236,7 @@ static void mcf5208evb_init(ram_addr_t ram_size,
         fprintf(stderr, "Too many NICs\n");
         exit(1);
     }
-    if (nd_table[0].vlan)
+    if (nd_table[0].used)
         mcf_fec_init(address_space_mem, &nd_table[0],
                      0xfc030000, pic + 36);
 
diff --git a/hw/mcf_fec.c b/hw/mcf_fec.c
index ae37bef..739b349 100644
--- a/hw/mcf_fec.c
+++ b/hw/mcf_fec.c
@@ -472,7 +472,6 @@ void mcf_fec_init(MemoryRegion *sysmem, NICInfo *nd,
     memory_region_add_subregion(sysmem, base, &s->iomem);
 
     s->conf.macaddr = nd->macaddr;
-    s->conf.vlan = nd->vlan;
     s->conf.peer = nd->netdev;
 
     s->nic = qemu_new_nic(&net_mcf_fec_info, &s->conf, nd->model, nd->name, s);
diff --git a/hw/mips_mipssim.c b/hw/mips_mipssim.c
index eb03047..830f635 100644
--- a/hw/mips_mipssim.c
+++ b/hw/mips_mipssim.c
@@ -217,7 +217,7 @@ mips_mipssim_init (ram_addr_t ram_size,
     if (serial_hds[0])
         serial_init(0x3f8, env->irq[4], 115200, serial_hds[0]);
 
-    if (nd_table[0].vlan)
+    if (nd_table[0].used)
         /* MIPSnet uses the MIPS CPU INT0, which is interrupt 2. */
         mipsnet_init(0x4200, env->irq[2], &nd_table[0]);
 }
diff --git a/hw/mips_r4k.c b/hw/mips_r4k.c
index d685999..967a76e 100644
--- a/hw/mips_r4k.c
+++ b/hw/mips_r4k.c
@@ -283,7 +283,7 @@ void mips_r4k_init (ram_addr_t ram_size,
 
     isa_vga_init(isa_bus);
 
-    if (nd_table[0].vlan)
+    if (nd_table[0].used)
         isa_ne2000_init(isa_bus, 0x300, 9, &nd_table[0]);
 
     ide_drive_get(hd, MAX_IDE_BUS);
diff --git a/hw/vexpress.c b/hw/vexpress.c
index 8072c5a..12aa2d5 100644
--- a/hw/vexpress.c
+++ b/hw/vexpress.c
@@ -420,7 +420,7 @@ static void vexpress_common_init(const VEDBoardInfo *daughterboard,
     memory_region_add_subregion(sysmem, map[VE_VIDEORAM], vram);
 
     /* 0x4e000000 LAN9118 Ethernet */
-    if (nd_table[0].vlan) {
+    if (nd_table[0].used) {
         lan9118_init(&nd_table[0], map[VE_ETHERNET], pic[15]);
     }
 
diff --git a/hw/xtensa_lx60.c b/hw/xtensa_lx60.c
index 152eed9..c4f616f 100644
--- a/hw/xtensa_lx60.c
+++ b/hw/xtensa_lx60.c
@@ -201,7 +201,7 @@ static void lx_init(const LxBoardDesc *board,
     memory_region_init(system_io, "lx60.io", 224 * 1024 * 1024);
     memory_region_add_subregion(system_memory, 0xf0000000, system_io);
     lx60_fpga_init(system_io, 0x0d020000);
-    if (nd_table[0].vlan) {
+    if (nd_table[0].used) {
         lx60_net_init(system_io, 0x0d030000, 0x0d030400, 0x0d800000,
                 xtensa_get_extint(env, 1), nd_table);
     }
diff --git a/net.c b/net.c
index 812589a..73325b0 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,
@@ -1153,18 +1095,9 @@ 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;
@@ -1183,16 +1116,8 @@ 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;
@@ -1201,7 +1126,7 @@ 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;
     }
 
@@ -1225,15 +1150,8 @@ 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);
     }
@@ -1322,7 +1240,6 @@ 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 791ca4f..7b8501a 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 d4f7a7b..62e5ac5 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -537,7 +537,7 @@ 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,
@@ -575,7 +575,7 @@ 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;
     }
@@ -678,7 +678,7 @@ int net_init_socket(QemuOpts *opts, const char *name, VLANClientState *peer)
                 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 42e29fe..c241a65 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)
     return -1;
 }
 
-int net_init_bridge(QemuOpts *opts, const char *name, VLANState *vlan)
+int net_init_bridge(QemuOpts *opts, const char *name, NetClientState *peer)
 {
     TAPState *s;
     int fd, vnet_hdr;
@@ -535,7 +535,7 @@ int net_init_bridge(QemuOpts *opts, const char *name, VLANState *vlan)
 
     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;
@@ -650,7 +650,7 @@ int net_init_tap(QemuOpts *opts, const char *name, VLANClientState *peer)
         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 d8bbc39..fcc90dc 100644
--- a/net/tap.h
+++ b/net/tap.h
@@ -57,6 +57,6 @@ int tap_get_fd(VLANClientState *vc);
 struct vhost_net;
 struct vhost_net *tap_get_vhost_net(VLANClientState *vc);
 
-int net_init_bridge(QemuOpts *opts, const char *name, VLANState *vlan);
+int net_init_bridge(QemuOpts *opts, const char *name, NetClientState *peer);
 
 #endif /* QEMU_NET_TAP_H */
diff --git a/qemu-common.h b/qemu-common.h
index 8f87e41..b72ee07 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