1 files changed, 53 insertions, 15 deletions

diff --git a/net/tipc/config.c b/net/tipc/config.c
index ca3544d030c7..961d1b097146 100644
--- a/net/tipc/config.c
+++ b/net/tipc/config.c
@@ -56,9 +56,6 @@ struct subscr_data {
 struct manager {
         u32 user_ref;
         u32 port_ref;
-        u32 subscr_ref;
-        u32 link_subscriptions;
-        struct list_head link_subscribers;
 };
 
 static struct manager mng = { 0};
@@ -70,12 +67,6 @@ static int req_tlv_space;		/* request message TLV area size */
 static int rep_headroom;                /* reply message headroom to use */
 
 
-void tipc_cfg_link_event(u32 addr, char *name, int up)
-{
-        /* TIPC DOESN'T HANDLE LINK EVENT SUBSCRIPTIONS AT THE MOMENT */
-}
-
-
 struct sk_buff *tipc_cfg_reply_alloc(int payload_size)
 {
         struct sk_buff *buf;
@@ -130,12 +121,24 @@ struct sk_buff *tipc_cfg_reply_string_type(u16 tlv_type, char *string)
 }
 
 
-
-
 #if 0
 
 /* Now obsolete code for handling commands not yet implemented the new way */
 
+/*
+ * Some of this code assumed that the manager structure contains two added
+ * fields:
+ *      u32 link_subscriptions;
+ *      struct list_head link_subscribers;
+ * which are currently not present.  These fields may need to be re-introduced
+ * if and when support for link subscriptions is added.
+ */
+
+void tipc_cfg_link_event(u32 addr, char *name, int up)
+{
+        /* TIPC DOESN'T HANDLE LINK EVENT SUBSCRIPTIONS AT THE MOMENT */
+}
+
 int tipc_cfg_cmd(const struct tipc_cmd_msg * msg,
                  char *data,
                  u32 sz,
@@ -243,13 +246,48 @@ static void cfg_cmd_event(struct tipc_cmd_msg *msg,
         default:
                 rv = tipc_cfg_cmd(msg, data, sz, (u32 *)&msg_sect[1].iov_len, orig);
         }
-        exit:
+exit:
         rmsg.result_len = htonl(msg_sect[1].iov_len);
         rmsg.retval = htonl(rv);
         tipc_cfg_respond(msg_sect, 2u, orig);
 }
 #endif
 
+#define MAX_STATS_INFO 2000
+
+static struct sk_buff *tipc_show_stats(void)
+{
+        struct sk_buff *buf;
+        struct tlv_desc *rep_tlv;
+        struct print_buf pb;
+        int str_len;
+        u32 value;
+
+        if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED))
+                return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
+
+        value = ntohl(*(u32 *)TLV_DATA(req_tlv_area));
+        if (value != 0)
+                return tipc_cfg_reply_error_string("unsupported argument");
+
+        buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_STATS_INFO));
+        if (buf == NULL)
+                return NULL;
+
+        rep_tlv = (struct tlv_desc *)buf->data;
+        tipc_printbuf_init(&pb, (char *)TLV_DATA(rep_tlv), MAX_STATS_INFO);
+
+        tipc_printf(&pb, "TIPC version " TIPC_MOD_VER "\n");
+
+        /* Use additional tipc_printf()'s to return more info ... */
+
+        str_len = tipc_printbuf_validate(&pb);
+        skb_put(buf, TLV_SPACE(str_len));
+        TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len);
+
+        return buf;
+}
+
 static struct sk_buff *cfg_enable_bearer(void)
 {
         struct tipc_bearer_config *args;
@@ -533,6 +571,9 @@ struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area
         case TIPC_CMD_DUMP_LOG:
                 rep_tlv_buf = tipc_log_dump();
                 break;
+        case TIPC_CMD_SHOW_STATS:
+                rep_tlv_buf = tipc_show_stats();
+                break;
         case TIPC_CMD_SET_LINK_TOL:
         case TIPC_CMD_SET_LINK_PRI:
         case TIPC_CMD_SET_LINK_WINDOW:
@@ -667,9 +708,6 @@ int tipc_cfg_init(void)
         struct tipc_name_seq seq;
         int res;
 
-        memset(&mng, 0, sizeof(mng));
-        INIT_LIST_HEAD(&mng.link_subscribers);
-
         res = tipc_attach(&mng.user_ref, NULL, NULL);
         if (res)
                 goto failed;