convert net_init_slirp() to NetClientOptions

Signed-off-by: NLaszlo Ersek <lersek@redhat.com>
Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>

net/slirp.c

@@ -686,89 +686,46 @@ void do_info_usernet(Monitor *mon)
     }
 }
 
-static int net_init_slirp_configs(const char *name, const char *value, void *opaque)
+static void
+net_init_slirp_configs(const StringList *fwd, int flags)
 {
-    struct slirp_config_str *config;
-
-    if (strcmp(name, "hostfwd") != 0 && strcmp(name, "guestfwd") != 0) {
-        return 0;
-    }
-
-    config = g_malloc0(sizeof(*config));
+    while (fwd) {
+        struct slirp_config_str *config;
 
-    pstrcpy(config->str, sizeof(config->str), value);
+        config = g_malloc0(sizeof(*config));
+        pstrcpy(config->str, sizeof(config->str), fwd->value->str);
+        config->flags = flags;
+        config->next = slirp_configs;
+        slirp_configs = config;
 
-    if (!strcmp(name, "hostfwd")) {
-        config->flags = SLIRP_CFG_HOSTFWD;
+        fwd = fwd->next;
     }
-
-    config->next = slirp_configs;
-    slirp_configs = config;
-
-    return 0;
 }
 
-int net_init_slirp(QemuOpts *opts, const NetClientOptions *new_opts,
+int net_init_slirp(QemuOpts *old_opts, const NetClientOptions *opts,
                    const char *name, VLANState *vlan)
 {
     struct slirp_config_str *config;
-    const char *vhost;
-    const char *vhostname;
-    const char *vdhcp_start;
-    const char *vnamesrv;
-    const char *tftp_export;
-    const char *bootfile;
-    const char *smb_export;
-    const char *vsmbsrv;
-    const char *restrict_opt;
-    char *vnet = NULL;
-    int restricted = 0;
+    char *vnet;
     int ret;
+    const NetdevUserOptions *user;
 
-    vhost       = qemu_opt_get(opts, "host");
-    vhostname   = qemu_opt_get(opts, "hostname");
-    vdhcp_start = qemu_opt_get(opts, "dhcpstart");
-    vnamesrv    = qemu_opt_get(opts, "dns");
-    tftp_export = qemu_opt_get(opts, "tftp");
-    bootfile    = qemu_opt_get(opts, "bootfile");
-    smb_export  = qemu_opt_get(opts, "smb");
-    vsmbsrv     = qemu_opt_get(opts, "smbserver");
-
-    restrict_opt = qemu_opt_get(opts, "restrict");
-    if (restrict_opt) {
-        if (!strcmp(restrict_opt, "on") ||
-            !strcmp(restrict_opt, "yes") || !strcmp(restrict_opt, "y")) {
-            restricted = 1;
-        } else if (strcmp(restrict_opt, "off") &&
-            strcmp(restrict_opt, "no") && strcmp(restrict_opt, "n")) {
-            error_report("invalid option: 'restrict=%s'", restrict_opt);
-            return -1;
-        }
-    }
-
-    if (qemu_opt_get(opts, "ip")) {
-        const char *ip = qemu_opt_get(opts, "ip");
-        int l = strlen(ip) + strlen("/24") + 1;
+    assert(opts->kind == NET_CLIENT_OPTIONS_KIND_USER);
+    user = opts->user;
 
-        vnet = g_malloc(l);
+    vnet = user->has_net ? g_strdup(user->net) :
+           user->has_ip  ? g_strdup_printf("%s/24", user->ip) :
+           NULL;
 
-        /* emulate legacy ip= parameter */
-        pstrcpy(vnet, l, ip);
-        pstrcat(vnet, l, "/24");
-    }
-
-    if (qemu_opt_get(opts, "net")) {
-        if (vnet) {
-            g_free(vnet);
-        }
-        vnet = g_strdup(qemu_opt_get(opts, "net"));
-    }
+    /* all optional fields are initialized to "all bits zero" */
 
-    qemu_opt_foreach(opts, net_init_slirp_configs, NULL, 0);
+    net_init_slirp_configs(user->hostfwd, SLIRP_CFG_HOSTFWD);
+    net_init_slirp_configs(user->guestfwd, 0);
 
-    ret = net_slirp_init(vlan, "user", name, restricted, vnet, vhost,
-                         vhostname, tftp_export, bootfile, vdhcp_start,
-                         vnamesrv, smb_export, vsmbsrv);
+    ret = net_slirp_init(vlan, "user", name, user->restrict, vnet, user->host,
+                         user->hostname, user->tftp, user->bootfile,
+                         user->dhcpstart, user->dns, user->smb,
+                         user->smbserver);
 
     while (slirp_configs) {
         config = slirp_configs;