]> git.proxmox.com Git - mirror_iproute2.git/blobdiff - tipc/link.c
tipc: JSON support for tipc link printouts
[mirror_iproute2.git] / tipc / link.c
index a2d7c0016bc1a0490a137b34efbba7e81c4a1012..afd3e68d823a92bd695206eefea03adf6d9a64f9 100644 (file)
 #include "msg.h"
 #include "link.h"
 #include "bearer.h"
+#include "utils.h"
+
+#define PRIORITY_STR "priority"
+#define TOLERANCE_STR "tolerance"
+#define WINDOW_STR "window"
 
 static int link_list_cb(const struct nlmsghdr *nlh, void *data)
 {
@@ -38,13 +43,14 @@ static int link_list_cb(const struct nlmsghdr *nlh, void *data)
        if (!attrs[TIPC_NLA_LINK_NAME])
                return MNL_CB_ERROR;
 
-       printf("%s: ", mnl_attr_get_str(attrs[TIPC_NLA_LINK_NAME]));
-
+       print_string(PRINT_FP, NULL, "%s: ",
+                            mnl_attr_get_str(attrs[TIPC_NLA_LINK_NAME]));
        if (attrs[TIPC_NLA_LINK_UP])
-               printf("up\n");
+               print_string(PRINT_ANY,
+                        mnl_attr_get_str(attrs[TIPC_NLA_LINK_NAME]),"%s\n", "up");
        else
-               printf("down\n");
-
+               print_string(PRINT_ANY,
+                        mnl_attr_get_str(attrs[TIPC_NLA_LINK_NAME]), "%s\n", "down");
        return MNL_CB_OK;
 }
 
@@ -52,6 +58,7 @@ static int cmd_link_list(struct nlmsghdr *nlh, const struct cmd *cmd,
                         struct cmdl *cmdl, void *data)
 {
        char buf[MNL_SOCKET_BUFFER_SIZE];
+       int err = 0;
 
        if (help_flag) {
                fprintf(stderr, "Usage: %s link list\n", cmdl->argv[0]);
@@ -64,7 +71,12 @@ static int cmd_link_list(struct nlmsghdr *nlh, const struct cmd *cmd,
                return -1;
        }
 
-       return msg_dumpit(nlh, link_list_cb, NULL);
+       new_json_obj(json);
+       open_json_object(NULL);
+       err = msg_dumpit(nlh, link_list_cb, NULL);
+       close_json_object();
+       delete_json_obj();
+       return err;
 }
 
 static int link_get_cb(const struct nlmsghdr *nlh, void *data)
@@ -87,8 +99,23 @@ static int link_get_cb(const struct nlmsghdr *nlh, void *data)
        if (!props[*prop])
                return MNL_CB_ERROR;
 
-       printf("%u\n", mnl_attr_get_u32(props[*prop]));
-
+       new_json_obj(json);
+       open_json_object(NULL);
+       switch (*prop) {
+               case TIPC_NLA_PROP_PRIO:
+                       print_uint(PRINT_ANY, PRIORITY_STR, "%u\n", mnl_attr_get_u32(props[*prop]));
+               break;
+               case TIPC_NLA_PROP_TOL:
+                       print_uint(PRINT_ANY, TOLERANCE_STR, "%u\n", mnl_attr_get_u32(props[*prop]));
+               break;
+               case TIPC_NLA_PROP_WIN:
+                       print_uint(PRINT_ANY, WINDOW_STR, "%u\n", mnl_attr_get_u32(props[*prop]));
+               break;
+               default:
+                       break;
+       }
+       close_json_object();
+       delete_json_obj();
        return MNL_CB_OK;
 }
 
@@ -104,11 +131,11 @@ static int cmd_link_get_prop(struct nlmsghdr *nlh, const struct cmd *cmd,
                { NULL }
        };
 
-       if (strcmp(cmd->cmd, "priority") == 0)
+       if (strcmp(cmd->cmd, PRIORITY_STR) == 0)
                prop = TIPC_NLA_PROP_PRIO;
-       else if ((strcmp(cmd->cmd, "tolerance") == 0))
+       else if ((strcmp(cmd->cmd, TOLERANCE_STR) == 0))
                prop = TIPC_NLA_PROP_TOL;
-       else if ((strcmp(cmd->cmd, "window") == 0))
+       else if ((strcmp(cmd->cmd, WINDOW_STR) == 0))
                prop = TIPC_NLA_PROP_WIN;
        else
                return -EINVAL;
@@ -153,9 +180,9 @@ static int cmd_link_get(struct nlmsghdr *nlh, const struct cmd *cmd,
                        struct cmdl *cmdl, void *data)
 {
        const struct cmd cmds[] = {
-               { "priority",   cmd_link_get_prop,      cmd_link_get_help },
-               { "tolerance",  cmd_link_get_prop,      cmd_link_get_help },
-               { "window",     cmd_link_get_prop,      cmd_link_get_help },
+               { PRIORITY_STR, cmd_link_get_prop,      cmd_link_get_help },
+               { TOLERANCE_STR,        cmd_link_get_prop,      cmd_link_get_help },
+               { WINDOW_STR,   cmd_link_get_prop,      cmd_link_get_help },
                { NULL }
        };
 
@@ -214,109 +241,178 @@ static uint32_t perc(uint32_t count, uint32_t total)
        return (count * 100 + (total / 2)) / total;
 }
 
-static int _show_link_stat(struct nlattr *attrs[], struct nlattr *prop[],
-                          struct nlattr *stats[])
+static int _show_link_stat(const char *name, struct nlattr *attrs[],
+                          struct nlattr *prop[], struct nlattr *stats[])
 {
        uint32_t proft;
 
+       open_json_object(NULL);
+
+       print_string(PRINT_ANY, "link", "\nLink <%s>\n", name);
+       print_string(PRINT_JSON, "state", "", NULL);
+       open_json_array(PRINT_JSON, NULL);
        if (attrs[TIPC_NLA_LINK_ACTIVE])
-               printf("  ACTIVE");
+               print_string(PRINT_ANY, NULL, "  %s", "ACTIVE");
        else if (attrs[TIPC_NLA_LINK_UP])
-               printf("  STANDBY");
+               print_string(PRINT_ANY, NULL, "  %s", "STANDBY");
        else
-               printf("  DEFUNCT");
-
-       printf("  MTU:%u  Priority:%u  Tolerance:%u ms  Window:%u packets\n",
-              mnl_attr_get_u32(attrs[TIPC_NLA_LINK_MTU]),
-              mnl_attr_get_u32(prop[TIPC_NLA_PROP_PRIO]),
-              mnl_attr_get_u32(prop[TIPC_NLA_PROP_TOL]),
-              mnl_attr_get_u32(prop[TIPC_NLA_PROP_WIN]));
-
-       printf("  RX packets:%u fragments:%u/%u bundles:%u/%u\n",
-              mnl_attr_get_u32(attrs[TIPC_NLA_LINK_RX]) -
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_INFO]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED]));
-
-       printf("  TX packets:%u fragments:%u/%u bundles:%u/%u\n",
-              mnl_attr_get_u32(attrs[TIPC_NLA_LINK_TX]) -
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_INFO]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED]));
+               print_string(PRINT_ANY, NULL, "  %s", "DEFUNCT");
+       close_json_array(PRINT_JSON, NULL);
+
+       print_uint(PRINT_ANY, "mtu", "  MTU:%u",
+                          mnl_attr_get_u32(attrs[TIPC_NLA_LINK_MTU]));
+       print_uint(PRINT_ANY, PRIORITY_STR, "  Priority:%u",
+                          mnl_attr_get_u32(prop[TIPC_NLA_PROP_PRIO]));
+       print_uint(PRINT_ANY, TOLERANCE_STR, "  Tolerance:%u ms",
+                          mnl_attr_get_u32(prop[TIPC_NLA_PROP_TOL]));
+       print_uint(PRINT_ANY, WINDOW_STR, "  Window:%u packets\n",
+                          mnl_attr_get_u32(prop[TIPC_NLA_PROP_WIN]));
+
+       open_json_object("rx packets");
+       print_uint(PRINT_ANY, "rx packets", "  RX packets:%u",
+                          mnl_attr_get_u32(attrs[TIPC_NLA_LINK_RX]) -
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_INFO]));
+       print_uint(PRINT_ANY, "fragments", " fragments:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]));
+       print_uint(PRINT_ANY, "fragmented", "/%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]));
+       print_uint(PRINT_ANY, "bundles", " bundles:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]));
+       print_uint(PRINT_ANY, "bundled", "/%u\n",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED]));
+       close_json_object();
+
+       open_json_object("tx packets");
+       print_uint(PRINT_ANY, "tx packets", "  TX packets:%u",
+                          mnl_attr_get_u32(attrs[TIPC_NLA_LINK_TX]) -
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_INFO]));
+       print_uint(PRINT_ANY, "fragments", " fragments:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]));
+       print_uint(PRINT_ANY, "fragmented", "/%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]));
+       print_uint(PRINT_ANY, "bundles", " bundles:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]));
+       print_uint(PRINT_ANY, "bundled", "/%u\n",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED]));
+       close_json_object();
 
        proft = mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT]);
-       printf("  TX profile sample:%u packets  average:%u octets\n",
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_CNT]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_TOT]) / proft);
-
-       printf("  0-64:%u%% -256:%u%% -1024:%u%% -4096:%u%% -16384:%u%% -32768:%u%% -66000:%u%%\n",
-              perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P0]), proft),
-              perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P1]), proft),
-              perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P2]), proft),
-              perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P3]), proft),
-              perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P4]), proft),
-              perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P5]), proft),
-              perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P6]), proft));
-
-       printf("  RX states:%u probes:%u naks:%u defs:%u dups:%u\n",
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_STATES]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_PROBES]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_DUPLICATES]));
-
-       printf("  TX states:%u probes:%u naks:%u acks:%u dups:%u\n",
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_STATES]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_PROBES]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED]));
-
-       printf("  Congestion link:%u  Send queue max:%u avg:%u\n",
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE]));
-
+       print_uint(PRINT_ANY, "tx profile sample", "  TX profile sample:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_CNT]));
+       print_uint(PRINT_ANY, "packets average", " packets average:%u octets\n",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_TOT]) / proft);
+
+       print_uint(PRINT_ANY, "0-64", "  0-64:%u%%",
+                          perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P0]), proft));
+       print_uint(PRINT_ANY, "-256", " -256:%u%%",
+                          perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P1]), proft));
+       print_uint(PRINT_ANY, "-1024", " -1024:%u%%",
+                          perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P2]), proft));
+       print_uint(PRINT_ANY, "-4096", " -4096:%u%%",
+                          perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P3]), proft));
+       print_uint(PRINT_ANY, "-16384", " -16384:%u%%",
+                          perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P4]), proft));
+       print_uint(PRINT_ANY, "-32768", " -32768:%u%%",
+                          perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P5]), proft));
+       print_uint(PRINT_ANY, "-66000", " -66000:%u%%\n",
+                          perc(mnl_attr_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P6]), proft));
+
+       open_json_object("rx states");
+       print_uint(PRINT_ANY, "rx states", "  RX states:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_STATES]));
+       print_uint(PRINT_ANY, "probes", " probes:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_PROBES]));
+       print_uint(PRINT_ANY, "naks", " naks:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]));
+       print_uint(PRINT_ANY, "defs", " defs:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]));
+       print_uint(PRINT_ANY, "dups", " dups:%u\n",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_DUPLICATES]));
+       close_json_object();
+
+       open_json_object("tx states");
+       print_uint(PRINT_ANY, "tx states", "  TX states:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_STATES]));
+       print_uint(PRINT_ANY, "probes", " probes:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_PROBES]));
+       print_uint(PRINT_ANY, "naks", " naks:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]));
+       print_uint(PRINT_ANY, "acks", " acks:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]));
+       print_uint(PRINT_ANY, "retrans", " retrans:%u\n",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED]));
+       close_json_object();
+
+       print_uint(PRINT_ANY, "congestion link", "  Congestion link:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]));
+       print_uint(PRINT_ANY, "send queue max", "  Send queue max:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]));
+       print_uint(PRINT_ANY, "avg", " avg:%u\n",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE]));
+
+       close_json_object();
        return MNL_CB_OK;
 }
 
-static int _show_bc_link_stat(struct nlattr *prop[], struct nlattr *stats[])
+static int _show_bc_link_stat(const char *name, struct nlattr *prop[],
+                          struct nlattr *stats[])
 {
-       printf("  Window:%u packets\n",
-              mnl_attr_get_u32(prop[TIPC_NLA_PROP_WIN]));
-
-       printf("  RX packets:%u fragments:%u/%u bundles:%u/%u\n",
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_INFO]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED]));
-
-       printf("  TX packets:%u fragments:%u/%u bundles:%u/%u\n",
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_INFO]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED]));
-
-       printf("  RX naks:%u defs:%u dups:%u\n",
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_DUPLICATES]));
-
-       printf("  TX naks:%u acks:%u dups:%u\n",
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED]));
-
-       printf("  Congestion link:%u  Send queue max:%u avg:%u\n",
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]),
-              mnl_attr_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE]));
+       open_json_object(NULL);
+       print_string(PRINT_ANY, "link", "Link <%s>\n", name);
+       print_uint(PRINT_ANY, WINDOW_STR, "  Window:%u packets\n",
+                          mnl_attr_get_u32(prop[TIPC_NLA_PROP_WIN]));
+
+       open_json_object("rx packets");
+       print_uint(PRINT_ANY, "rx packets", "  RX packets:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_INFO]));
+       print_uint(PRINT_ANY, "fragments", " fragments:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]));
+       print_uint(PRINT_ANY, "fragmented", "/%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]));
+       print_uint(PRINT_ANY, "bundles", " bundles:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]));
+       print_uint(PRINT_ANY, "bundled", "/%u\n",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED]));
+       close_json_object();
+
+       open_json_object("tx packets");
+       print_uint(PRINT_ANY, "tx packets", "  TX packets:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_INFO]));
+       print_uint(PRINT_ANY, "fragments", " fragments:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]));
+       print_uint(PRINT_ANY, "fragmented", "/%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]));
+       print_uint(PRINT_ANY, "bundles", " bundles:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]));
+       print_uint(PRINT_ANY, "bundled", "/%u\n",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED]));
+       close_json_object();
+
+       open_json_object("rx naks");
+       print_uint(PRINT_ANY, "rx naks", "  RX naks:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]));
+       print_uint(PRINT_ANY, "defs",  " defs:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]));
+       print_uint(PRINT_ANY, "dups",  " dups:%u\n",
+                  mnl_attr_get_u32(stats[TIPC_NLA_STATS_DUPLICATES]));
+       close_json_object();
+
+       open_json_object("tx naks");
+       print_uint(PRINT_ANY, "tx naks", "  TX naks:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]));
+       print_uint(PRINT_ANY, "acks",  " acks:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]));
+       print_uint(PRINT_ANY, "retrans",  " retrans:%u\n",
+                  mnl_attr_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED]));
+       close_json_object();
+
+       print_uint(PRINT_ANY, "congestion link", "  Congestion link:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]));
+       print_uint(PRINT_ANY, "send queue max", "  Send queue max:%u",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]));
+       print_uint(PRINT_ANY, "avg", " avg:%u\n",
+                          mnl_attr_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE]));
+       close_json_object();
 
        return MNL_CB_OK;
 }
@@ -350,13 +446,10 @@ static int link_stat_show_cb(const struct nlmsghdr *nlh, void *data)
                return MNL_CB_OK;
 
        if (attrs[TIPC_NLA_LINK_BROADCAST]) {
-               printf("Link <%s>\n", name);
-               return _show_bc_link_stat(prop, stats);
+               return _show_bc_link_stat(name, prop, stats);
        }
 
-       printf("\nLink <%s>\n", name);
-
-       return _show_link_stat(attrs, prop, stats);
+       return _show_link_stat(name, attrs, prop, stats);
 }
 
 static void cmd_link_stat_show_help(struct cmdl *cmdl)
@@ -375,6 +468,7 @@ static int cmd_link_stat_show(struct nlmsghdr *nlh, const struct cmd *cmd,
                { "link",               OPT_KEYVAL,     NULL },
                { NULL }
        };
+       int err = 0;
 
        if (help_flag) {
                (cmd->help)(cmdl);
@@ -394,7 +488,10 @@ static int cmd_link_stat_show(struct nlmsghdr *nlh, const struct cmd *cmd,
        if (opt)
                link = opt->val;
 
-       return msg_dumpit(nlh, link_stat_show_cb, link);
+       new_json_obj(json);
+       err = msg_dumpit(nlh, link_stat_show_cb, link);
+       delete_json_obj();
+       return err;
 }
 
 static void cmd_link_stat_help(struct cmdl *cmdl)
@@ -442,11 +539,11 @@ static int cmd_link_set_prop(struct nlmsghdr *nlh, const struct cmd *cmd,
                { NULL }
        };
 
-       if (strcmp(cmd->cmd, "priority") == 0)
+       if (strcmp(cmd->cmd, PRIORITY_STR) == 0)
                prop = TIPC_NLA_PROP_PRIO;
-       else if ((strcmp(cmd->cmd, "tolerance") == 0))
+       else if ((strcmp(cmd->cmd, TOLERANCE_STR) == 0))
                prop = TIPC_NLA_PROP_TOL;
-       else if ((strcmp(cmd->cmd, "window") == 0))
+       else if ((strcmp(cmd->cmd, WINDOW_STR) == 0))
                prop = TIPC_NLA_PROP_WIN;
        else
                return -EINVAL;
@@ -492,9 +589,9 @@ static int cmd_link_set(struct nlmsghdr *nlh, const struct cmd *cmd,
                        struct cmdl *cmdl, void *data)
 {
        const struct cmd cmds[] = {
-               { "priority",   cmd_link_set_prop,      cmd_link_set_help },
-               { "tolerance",  cmd_link_set_prop,      cmd_link_set_help },
-               { "window",     cmd_link_set_prop,      cmd_link_set_help },
+               { PRIORITY_STR, cmd_link_set_prop,      cmd_link_set_help },
+               { TOLERANCE_STR,        cmd_link_set_prop,      cmd_link_set_help },
+               { WINDOW_STR,   cmd_link_set_prop,      cmd_link_set_help },
                { NULL }
        };
 
@@ -540,15 +637,17 @@ static int link_mon_summary_cb(const struct nlmsghdr *nlh, void *data)
 
        mnl_attr_parse_nested(info[TIPC_NLA_MON], parse_attrs, attrs);
 
-       printf("\nbearer %s\n",
+       open_json_object(NULL);
+       print_string(PRINT_ANY, "bearer", "\nbearer %s\n",
                mnl_attr_get_str(attrs[TIPC_NLA_MON_BEARER_NAME]));
 
-       printf("    table_generation %u\n",
+       print_uint(PRINT_ANY, "table_generation", "    table_generation %u\n",
               mnl_attr_get_u32(attrs[TIPC_NLA_MON_LISTGEN]));
-       printf("    cluster_size %u\n",
+       print_uint(PRINT_ANY, "cluster_size", "    cluster_size %u\n",
                mnl_attr_get_u32(attrs[TIPC_NLA_MON_PEERCNT]));
-       printf("    algorithm %s\n",
+       print_string(PRINT_ANY, "algorithm", "    algorithm %s\n",
                attrs[TIPC_NLA_MON_ACTIVE] ? "overlapping-ring" : "full-mesh");
+       close_json_object();
 
        return MNL_CB_OK;
 }
@@ -557,6 +656,7 @@ static int cmd_link_mon_summary(struct nlmsghdr *nlh, const struct cmd *cmd,
                                struct cmdl *cmdl, void *data)
 {
        char buf[MNL_SOCKET_BUFFER_SIZE];
+       int err = 0;
 
        if (help_flag) {
                fprintf(stderr, "Usage: %s monitor summary\n", cmdl->argv[0]);
@@ -569,7 +669,11 @@ static int cmd_link_mon_summary(struct nlmsghdr *nlh, const struct cmd *cmd,
                return -1;
        }
 
-       return msg_dumpit(nlh, link_mon_summary_cb, NULL);
+       new_json_obj(json);
+       err = msg_dumpit(nlh, link_mon_summary_cb, NULL);
+       delete_json_obj();
+
+       return err;
 }
 
 #define STATUS_WIDTH 7
@@ -590,16 +694,19 @@ static int map_get(uint64_t up_map, int i)
 static void link_mon_print_applied(uint16_t applied, uint64_t up_map)
 {
        int i;
-       char state;
 
+       open_json_array(PRINT_JSON, "applied_node_status");
        for (i = 0; i < applied; i++) {
+               char state_str[2] = {0};
+
                /* print the delimiter for every -n- entry */
                if (i && !(i % APPL_NODE_STATUS_WIDTH))
-                       printf(",");
+                       print_string(PRINT_FP, NULL, "%s", ",");
 
-               state = map_get(up_map, i) ? 'U' : 'D';
-               printf("%c", state);
+               sprintf(state_str, "%c", map_get(up_map, i) ? 'U' : 'D');
+               print_string(PRINT_ANY, NULL, "%s", state_str);
        }
+       close_json_array(PRINT_JSON, "applied_node_status");
 }
 
 /* print the non applied members, since we dont know
@@ -611,19 +718,23 @@ static void link_mon_print_non_applied(uint16_t applied, uint16_t member_cnt,
        int i;
        char state;
 
-       printf(" [");
+       open_json_array(PRINT_JSON, "[non_applied_node:status]");
+       print_string(PRINT_FP, NULL, " %s", "[");
        for (i = applied; i < member_cnt; i++) {
                char addr_str[16];
+               char full_state[17] = {0};
 
                /* print the delimiter for every entry */
                if (i != applied)
-                       printf(",");
+                       print_string(PRINT_FP, NULL, "%s", ",");
 
                sprintf(addr_str, "%x:", members[i]);
                state = map_get(up_map, i) ? 'U' : 'D';
-               printf("%s%c", addr_str, state);
+               sprintf(full_state, "%s%c", addr_str, state);
+               print_string(PRINT_ANY, NULL, "%s", full_state);
        }
-       printf("]");
+       print_string(PRINT_FP, NULL, "%s", "]");
+       close_json_array(PRINT_JSON, "[non_applied_node:status]");
 }
 
 static void link_mon_print_peer_state(const uint32_t addr, const char *status,
@@ -634,11 +745,17 @@ static void link_mon_print_peer_state(const uint32_t addr, const char *status,
 
        sprintf(addr_str, "%u.%u.%u", tipc_zone(addr), tipc_cluster(addr),
                tipc_node(addr));
-
-       printf("%-*s", MAX_NODE_WIDTH, addr_str);
-       printf("%-*s", STATUS_WIDTH, status);
-       printf("%-*s", DIRECTLY_MON_WIDTH, monitored);
-       printf("%-*u", MAX_DOM_GEN_WIDTH, dom_gen);
+       if (is_json_context()) {
+               print_string(PRINT_JSON, "node", NULL, addr_str);
+               print_string(PRINT_JSON, "status", NULL, status);
+               print_string(PRINT_JSON, "monitored", NULL, monitored);
+               print_uint(PRINT_JSON, "generation", NULL, dom_gen);
+       } else {
+               printf("%-*s", MAX_NODE_WIDTH, addr_str);
+               printf("%-*s", STATUS_WIDTH, status);
+               printf("%-*s", DIRECTLY_MON_WIDTH, monitored);
+               printf("%-*u", MAX_DOM_GEN_WIDTH, dom_gen);
+       }
 }
 
 static int link_mon_peer_list_cb(const struct nlmsghdr *nlh, void *data)
@@ -657,6 +774,7 @@ static int link_mon_peer_list_cb(const struct nlmsghdr *nlh, void *data)
        if (!info[TIPC_NLA_MON_PEER])
                return MNL_CB_ERROR;
 
+       open_json_object(NULL);
        mnl_attr_parse_nested(info[TIPC_NLA_MON_PEER], parse_attrs, attrs);
 
        (attrs[TIPC_NLA_MON_PEER_LOCAL] || attrs[TIPC_NLA_MON_PEER_HEAD]) ?
@@ -691,8 +809,9 @@ static int link_mon_peer_list_cb(const struct nlmsghdr *nlh, void *data)
                                   mnl_attr_get_payload(attrs[TIPC_NLA_MON_PEER_MEMBERS]));
 
 exit:
-       printf("\n");
+       print_string(PRINT_FP, NULL, "\n", "");
 
+       close_json_object();
        return MNL_CB_OK;
 }
 
@@ -701,6 +820,7 @@ static int link_mon_peer_list(uint32_t mon_ref)
        struct nlmsghdr *nlh;
        char buf[MNL_SOCKET_BUFFER_SIZE];
        struct nlattr *nest;
+       int err = 0;
 
        nlh = msg_init(buf, TIPC_NL_MON_PEER_GET);
        if (!nlh) {
@@ -712,7 +832,8 @@ static int link_mon_peer_list(uint32_t mon_ref)
        mnl_attr_put_u32(nlh, TIPC_NLA_MON_REF, mon_ref);
        mnl_attr_nest_end(nlh, nest);
 
-       return msg_dumpit(nlh, link_mon_peer_list_cb, NULL);
+       err = msg_dumpit(nlh, link_mon_peer_list_cb, NULL);
+       return err;
 }
 
 static int link_mon_list_cb(const struct nlmsghdr *nlh, void *data)
@@ -736,12 +857,16 @@ static int link_mon_list_cb(const struct nlmsghdr *nlh, void *data)
        if (*req_bearer && (strcmp(req_bearer, bname) != 0))
                return MNL_CB_OK;
 
-       printf("\nbearer %s\n", bname);
-       printf("%s\n", title);
+       open_json_object(NULL);
+       print_string(PRINT_ANY, "bearer", "\nbearer %s\n", bname);
+       print_string(PRINT_FP, NULL, "%s\n", title);
 
+       open_json_array(PRINT_JSON, bname);
        if (mnl_attr_get_u32(attrs[TIPC_NLA_MON_PEERCNT]))
                link_mon_peer_list(mnl_attr_get_u32(attrs[TIPC_NLA_MON_REF]));
+       close_json_array(PRINT_JSON, bname);
 
+       close_json_object();
        return MNL_CB_OK;
 }
 
@@ -807,7 +932,10 @@ static int cmd_link_mon_list(struct nlmsghdr *nlh, const struct cmd *cmd,
                return -1;
        }
 
-       return msg_dumpit(nlh, link_mon_list_cb, bname);
+       new_json_obj(json);
+       err = msg_dumpit(nlh, link_mon_list_cb, bname);
+       delete_json_obj();
+       return err;
 }
 
 static void cmd_link_mon_set_help(struct cmdl *cmdl)
@@ -851,8 +979,10 @@ static int link_mon_get_cb(const struct nlmsghdr *nlh, void *data)
        if (!attrs[TIPC_NLA_MON_ACTIVATION_THRESHOLD])
                return MNL_CB_ERROR;
 
-       printf("%u\n",
-              mnl_attr_get_u32(attrs[TIPC_NLA_MON_ACTIVATION_THRESHOLD]));
+       new_json_obj(json);
+       print_uint(PRINT_ANY, "threshold", "%u\n",
+                          mnl_attr_get_u32(attrs[TIPC_NLA_MON_ACTIVATION_THRESHOLD]));
+       delete_json_obj();
 
        return MNL_CB_OK;
 }