net: Do not fill legacy info_str for backends

As we use QAPI NetClientState->stored_config to store and get information
about backend network devices, we can drop fill of legacy field info_str
for them.

We still use info_str field for NIC and hubports, so we can not completely
remove it.

Signed-off-by: Alexey Kirillov <lekiravi@yandex-team.ru>
Signed-off-by: Jason Wang <jasowang@redhat.com>

net/l2tpv3.c

@@ -729,8 +729,6 @@ int net_init_l2tpv3(const Netdev *netdev,
 
     QAPI_CLONE_MEMBERS(NetdevL2TPv3Options,
                        &nc->stored_config->u.l2tpv3, l2tpv3);
-
-    s->nc.info_str = g_strdup_printf("l2tpv3: connected");
     return 0;
 outerr:
     qemu_del_net_client(nc);

net/slirp.c

@@ -664,9 +664,6 @@ static int net_slirp_init(NetClientState *peer, const char *model,
         stored->tftp_server_name = g_strdup(tftp_server_name);
     }
 
-    nc->info_str = g_strdup_printf("net=%s,restrict=%s", inet_ntoa(net),
-                                   restricted ? "on" : "off");
-
     s = DO_UPCAST(SlirpState, nc, nc);
 
     s->slirp = slirp_init(restricted, ipv4, net, mask, host,

net/socket.c

@@ -180,8 +180,6 @@ static void net_socket_send(void *opaque)
         s->fd = -1;
         net_socket_rs_init(&s->rs, net_socket_rs_finalize, false);
         s->nc.link_down = true;
-        g_free(s->nc.info_str);
-        s->nc.info_str = g_new0(char, 1);
 
         return;
     }
@@ -401,16 +399,10 @@ static NetSocketState *net_socket_fd_init_dgram(NetClientState *peer,
         stored->mcast = g_strdup(mcast);
 
         s->dgram_dst = saddr;
-        nc->info_str = g_strdup_printf("socket: fd=%d (cloned mcast=%s:%d)",
-                                       fd, inet_ntoa(saddr.sin_addr),
-                                       ntohs(saddr.sin_port));
     } else {
         if (sa_type == SOCKET_ADDRESS_TYPE_UNIX) {
             s->dgram_dst.sin_family = AF_UNIX;
         }
-
-        nc->info_str = g_strdup_printf("socket: fd=%d %s",
-                                       fd, SocketAddressType_str(sa_type));
     }
 
     return s;
@@ -445,8 +437,6 @@ static NetSocketState *net_socket_fd_init_stream(NetClientState *peer,
 
     nc = qemu_new_net_client(&net_socket_info, peer, model, name);
 
-    nc->info_str = g_strdup_printf("socket: fd=%d", fd);
-
     s = DO_UPCAST(NetSocketState, nc, nc);
 
     s->fd = fd;
@@ -528,11 +518,6 @@ static void net_socket_accept(void *opaque)
 
     stored->has_fd = true;
     stored->fd = g_strdup_printf("%d", fd);
-
-    g_free(s->nc.info_str);
-    s->nc.info_str = g_strdup_printf("socket: connection from %s:%d",
-                                     inet_ntoa(saddr.sin_addr),
-                                     ntohs(saddr.sin_port));
 }
 
 static int net_socket_listen_init(NetClientState *peer,
@@ -647,10 +632,6 @@ static int net_socket_connect_init(NetClientState *peer,
     stored->has_connect = true;
     stored->connect = g_strdup(host_str);
 
-    g_free(s->nc.info_str);
-    s->nc.info_str = g_strdup_printf("socket: connect to %s:%d",
-                                     inet_ntoa(saddr.sin_addr),
-                                     ntohs(saddr.sin_port));
     return 0;
 }
 
@@ -707,12 +688,7 @@ static int net_socket_mcast_init(NetClientState *peer,
         stored->localaddr = g_strdup(localaddr_str);
     }
 
-    g_free(s->nc.info_str);
-    s->nc.info_str = g_strdup_printf("socket: mcast=%s:%d",
-                                     inet_ntoa(saddr.sin_addr),
-                                     ntohs(saddr.sin_port));
     return 0;
-
 }
 
 static int net_socket_udp_init(NetClientState *peer,
@@ -773,10 +749,6 @@ static int net_socket_udp_init(NetClientState *peer,
     stored->has_udp = true;
     stored->udp = g_strdup(rhost);
 
-    g_free(s->nc.info_str);
-    s->nc.info_str = g_strdup_printf("socket: udp=%s:%d",
-                                     inet_ntoa(raddr.sin_addr),
-                                     ntohs(raddr.sin_port));
     return 0;
 }
 

net/tap-win32.c

@@ -787,8 +787,6 @@ static int tap_win32_init(NetClientState *peer, const char *model,
     stored->has_ifname = true;
     stored->ifname = g_strdup(ifname);
 
-    s->nc.info_str = g_strdup_printf("tap: ifname=%s", ifname);
-
     s->handle = handle;
 
     qemu_add_wait_object(s->handle->tap_semaphore, tap_win32_send, s);

net/tap.c

@@ -625,8 +625,6 @@ int net_init_bridge(const Netdev *netdev, const char *name,
         stored->helper = g_strdup(helper);
     }
 
-    s->nc.info_str = g_strdup_printf("helper=%s,br=%s", helper, br);
-
     return 0;
 }
 
@@ -712,8 +710,6 @@ static void net_init_tap_one(const NetdevTapOptions *tap, NetClientState *peer,
             stored->fds = g_strdup_printf("%s:%d", stored->fds, fd);
             g_free(tmp_s);
         }
-
-        s->nc.info_str = g_strdup_printf("fd=%d", fd);
     } else if (tap->has_helper) {
         if (!stored->has_helper) {
             stored->has_helper = true;
@@ -725,8 +721,6 @@ static void net_init_tap_one(const NetdevTapOptions *tap, NetClientState *peer,
             stored->br = tap->has_br ? g_strdup(tap->br) :
                                        g_strdup(DEFAULT_BRIDGE_INTERFACE);
         }
-
-        s->nc.info_str = g_strdup_printf("helper=%s", tap->helper);
     } else {
         if (ifname && !stored->has_ifname) {
             stored->has_ifname = true;
@@ -743,9 +737,6 @@ static void net_init_tap_one(const NetdevTapOptions *tap, NetClientState *peer,
             stored->downscript = g_strdup(downscript);
         }
 
-        s->nc.info_str = g_strdup_printf("ifname=%s,script=%s,downscript=%s",
-                                         ifname, script, downscript);
-
         if (strcmp(downscript, "no") != 0) {
             snprintf(s->down_script, sizeof(s->down_script), "%s", downscript);
             snprintf(s->down_script_arg, sizeof(s->down_script_arg),

net/vde.c

@@ -100,8 +100,6 @@ static int net_vde_init(NetClientState *peer, const char *model,
 
     nc = qemu_new_net_client(&net_vde_info, peer, model, name);
 
-    nc->info_str = g_strdup_printf("sock=%s,fd=%d", sock, vde_datafd(vde));
-
     s = DO_UPCAST(VDEState, nc, nc);
 
     s->vde = vde;

net/vhost-user.c

@@ -327,7 +327,6 @@ static int net_vhost_user_init(NetClientState *peer, const char *device,
     user = g_new0(struct VhostUserState, 1);
     for (i = 0; i < queues; i++) {
         nc = qemu_new_net_client(&net_vhost_user_info, peer, device, name);
-        nc->info_str = g_strdup_printf("vhost-user%d to %s", i, chr->label);
         nc->queue_index = i;
         if (!nc0) {
             nc0 = nc;

net/vhost-vdpa.c

@@ -200,7 +200,6 @@ static int net_vhost_vdpa_init(NetClientState *peer, const char *device,
     stored->has_queues = true;
     stored->queues = 1; /* TODO: change when support multiqueue */
 
-    nc->info_str = g_strdup_printf(TYPE_VHOST_VDPA);
     nc->queue_index = 0;
     s = DO_UPCAST(VhostVDPAState, nc, nc);
     vdpa_device_fd = qemu_open_old(vhostdev, O_RDWR);