The output of vlan show was broken previous change to use json_print.
Clean the code up and return to original format.

Note: the JSON syntax has changed to make the bridge vlan
show more like other outputs (e.g. ip -j li show).

Signed-off-by: Stephen Hemminger <step...@networkplumber.org>
---
 bridge/br_common.h |  2 +-
 bridge/link.c      |  6 ++---
 bridge/vlan.c      | 61 +++++++++++++++++++++++++++-------------------
 3 files changed, 40 insertions(+), 29 deletions(-)

diff --git a/bridge/br_common.h b/bridge/br_common.h
index 2f1cb8fd9f3d..69665fde32b6 100644
--- a/bridge/br_common.h
+++ b/bridge/br_common.h
@@ -6,7 +6,7 @@
 #define MDB_RTR_RTA(r) \
                ((struct rtattr *)(((char *)(r)) + RTA_ALIGN(sizeof(__u32))))
 
-extern void print_vlan_info(FILE *fp, struct rtattr *tb);
+extern void print_vlan_info(struct rtattr *tb, int ifindex);
 extern int print_linkinfo(const struct sockaddr_nl *who,
                          struct nlmsghdr *n,
                          void *arg);
diff --git a/bridge/link.c b/bridge/link.c
index 8d89aca2e638..a5ee9a5c58e6 100644
--- a/bridge/link.c
+++ b/bridge/link.c
@@ -161,7 +161,7 @@ static void print_protinfo(FILE *fp, struct rtattr *attr)
  * This is reported by HW devices that have some bridging
  * capabilities.
  */
-static void print_af_spec(FILE *fp, struct rtattr *attr)
+static void print_af_spec(struct rtattr *attr, int ifindex)
 {
        struct rtattr *aftb[IFLA_BRIDGE_MAX+1];
 
@@ -174,7 +174,7 @@ static void print_af_spec(FILE *fp, struct rtattr *attr)
                return;
 
        if (aftb[IFLA_BRIDGE_VLAN_INFO])
-               print_vlan_info(fp, aftb[IFLA_BRIDGE_VLAN_INFO]);
+               print_vlan_info(aftb[IFLA_BRIDGE_VLAN_INFO], ifindex);
 }
 
 int print_linkinfo(const struct sockaddr_nl *who,
@@ -229,7 +229,7 @@ int print_linkinfo(const struct sockaddr_nl *who,
                print_protinfo(fp, tb[IFLA_PROTINFO]);
 
        if (tb[IFLA_AF_SPEC])
-               print_af_spec(fp, tb[IFLA_AF_SPEC]);
+               print_af_spec(tb[IFLA_AF_SPEC], ifi->ifi_index);
 
        print_string(PRINT_FP, NULL, "%s", "\n");
        close_json_object();
diff --git a/bridge/vlan.c b/bridge/vlan.c
index 19a36b804069..bdce55ae4e14 100644
--- a/bridge/vlan.c
+++ b/bridge/vlan.c
@@ -252,10 +252,18 @@ static int filter_vlan_check(__u16 vid, __u16 flags)
        return 1;
 }
 
-static void print_vlan_port(FILE *fp, int ifi_index)
+static void open_vlan_port(int ifi_index)
 {
-       print_string(PRINT_ANY, NULL, "%s",
+       open_json_object(NULL);
+       print_string(PRINT_ANY, "ifname", "%s",
                     ll_index_to_name(ifi_index));
+       open_json_array(PRINT_JSON, "vlans");
+}
+
+static void close_vlan_port(void)
+{
+       close_json_array(PRINT_JSON, NULL);
+       close_json_object();
 }
 
 static void print_range(const char *name, __u16 start, __u16 id)
@@ -278,7 +286,7 @@ static void print_vlan_tunnel_info(FILE *fp, struct rtattr 
*tb, int ifindex)
        __u32 last_tunid_start = 0;
 
        if (!filter_vlan)
-               print_vlan_port(fp, ifindex);
+               open_vlan_port(ifindex);
 
        open_json_array(PRINT_JSON, "tunnel");
        for (i = RTA_DATA(list); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) {
@@ -323,18 +331,20 @@ static void print_vlan_tunnel_info(FILE *fp, struct 
rtattr *tb, int ifindex)
                        continue;
 
                if (filter_vlan)
-                       print_vlan_port(fp, ifindex);
+                       open_vlan_port(ifindex);
 
                open_json_object(NULL);
                print_range("vlan", last_vid_start, tunnel_vid);
                print_range("tunid", last_tunid_start, tunnel_id);
                close_json_object();
 
-               if (!is_json_context())
-                       fprintf(fp, "\n");
-
+               print_string(PRINT_FP, NULL, "%s", _SL_);
+               if (filter_vlan)
+                       close_vlan_port();
        }
-       close_json_array(PRINT_JSON, NULL);
+
+       if (!filter_vlan)
+               close_vlan_port();
 }
 
 static int print_vlan_tunnel(const struct sockaddr_nl *who,
@@ -421,8 +431,8 @@ static int print_vlan(const struct sockaddr_nl *who,
                return 0;
        }
 
-       print_vlan_port(fp, ifm->ifi_index);
-       print_vlan_info(fp, tb[IFLA_AF_SPEC]);
+       print_vlan_info(tb[IFLA_AF_SPEC], ifm->ifi_index);
+       print_string(PRINT_FP, NULL, "%s", _SL_);
 
        fflush(fp);
        return 0;
@@ -430,11 +440,16 @@ static int print_vlan(const struct sockaddr_nl *who,
 
 static void print_vlan_flags(__u16 flags)
 {
+       if (flags == 0)
+               return;
+
+       open_json_array(PRINT_JSON, "flags");
        if (flags & BRIDGE_VLAN_INFO_PVID)
-               print_null(PRINT_ANY, "pvid", " %s", "PVID");
+               print_string(PRINT_ANY, NULL, " %s", "PVID");
 
        if (flags & BRIDGE_VLAN_INFO_UNTAGGED)
-               print_null(PRINT_ANY, "untagged", " %s", "untagged");
+               print_string(PRINT_ANY, NULL, " %s", "Egress Untagged");
+       close_json_array(PRINT_JSON, NULL);
 }
 
 static void print_one_vlan_stats(const struct bridge_vlan_xstats *vstats)
@@ -461,6 +476,7 @@ static void print_vlan_stats_attr(struct rtattr *attr, int 
ifindex)
 {
        struct rtattr *brtb[LINK_XSTATS_TYPE_MAX+1];
        struct rtattr *i, *list;
+       const char *ifname;
        int rem;
 
        parse_rtattr(brtb, LINK_XSTATS_TYPE_MAX, RTA_DATA(attr),
@@ -471,13 +487,12 @@ static void print_vlan_stats_attr(struct rtattr *attr, 
int ifindex)
        list = brtb[LINK_XSTATS_TYPE_BRIDGE];
        rem = RTA_PAYLOAD(list);
 
-       open_json_object(NULL);
+       ifname = ll_index_to_name(ifindex);
+       open_json_object(ifname);
 
-       print_color_string(PRINT_ANY, COLOR_IFNAME,
-                          "dev", "%-16s",
-                          ll_index_to_name(ifindex));
+       print_color_string(PRINT_FP, COLOR_IFNAME,
+                          NULL, "%-16s", ifname);
 
-       open_json_array(PRINT_JSON, "xstats");
        for (i = RTA_DATA(list); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) {
                const struct bridge_vlan_xstats *vstats = RTA_DATA(i);
 
@@ -494,7 +509,6 @@ static void print_vlan_stats_attr(struct rtattr *attr, int 
ifindex)
 
                print_one_vlan_stats(vstats);
        }
-       close_json_array(PRINT_ANY, "\n");
        close_json_object();
 
 }
@@ -623,16 +637,13 @@ static int vlan_show(int argc, char **argv)
        return 0;
 }
 
-void print_vlan_info(FILE *fp, struct rtattr *tb)
+void print_vlan_info(struct rtattr *tb, int ifindex)
 {
        struct rtattr *i, *list = tb;
        int rem = RTA_PAYLOAD(list);
        __u16 last_vid_start = 0;
 
-       if (!is_json_context())
-               fprintf(fp, "%s", _SL_);
-
-       open_json_array(PRINT_JSON, "vlan");
+       open_vlan_port(ifindex);
 
        for (i = RTA_DATA(list); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) {
                struct bridge_vlan_info *vinfo;
@@ -656,9 +667,9 @@ void print_vlan_info(FILE *fp, struct rtattr *tb)
 
                print_vlan_flags(vinfo->flags);
                close_json_object();
+               print_string(PRINT_FP, NULL, "%s", _SL_);
        }
-
-       close_json_array(PRINT_ANY, "\n");
+       close_vlan_port();
 }
 
 int do_vlan(int argc, char **argv)
-- 
2.17.1

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