1 files changed, 78 insertions, 441 deletions

diff --git a/net/tipc/config.c b/net/tipc/config.c
index ca3544d030c..2b42403ad33 100644
--- a/net/tipc/config.c
+++ b/net/tipc/config.c
@@ -2,7 +2,7 @@
  * net/tipc/config.c: TIPC configuration management code
  *
  * Copyright (c) 2002-2006, Ericsson AB
- * Copyright (c) 2004-2007, Wind River Systems
+ * Copyright (c) 2004-2007, 2010-2013, Wind River Systems
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -35,47 +35,17 @@
  */
 
 #include "core.h"
-#include "dbg.h"
-#include "bearer.h"
 #include "port.h"
-#include "link.h"
-#include "zone.h"
-#include "addr.h"
 #include "name_table.h"
-#include "node.h"
 #include "config.h"
-#include "discover.h"
+#include "server.h"
 
-struct subscr_data {
-	char usr_handle[8];
-	u32 domain;
-	u32 port_ref;
-	struct list_head subd_list;
-};
-
-struct manager {
-	u32 user_ref;
-	u32 port_ref;
-	u32 subscr_ref;
-	u32 link_subscriptions;
-	struct list_head link_subscribers;
-};
-
-static struct manager mng = { 0};
-
-static DEFINE_SPINLOCK(config_lock);
+#define REPLY_TRUNCATED "<truncated>\n"
 
 static const void *req_tlv_area;	/* request message TLV area */
 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;
@@ -92,10 +62,8 @@ int tipc_cfg_append_tlv(struct sk_buff *buf, int tlv_type,
 	struct tlv_desc *tlv = (struct tlv_desc *)skb_tail_pointer(buf);
 	int new_tlv_space = TLV_SPACE(tlv_data_size);
 
-	if (skb_tailroom(buf) < new_tlv_space) {
-		dbg("tipc_cfg_append_tlv unable to append TLV\n");
+	if (skb_tailroom(buf) < new_tlv_space)
 		return 0;
-	}
 	skb_put(buf, new_tlv_space);
 	tlv->tlv_type = htons(tlv_type);
 	tlv->tlv_len  = htons(TLV_LENGTH(tlv_data_size));
@@ -104,7 +72,7 @@ int tipc_cfg_append_tlv(struct sk_buff *buf, int tlv_type,
 	return 1;
 }
 
-struct sk_buff *tipc_cfg_reply_unsigned_type(u16 tlv_type, u32 value)
+static struct sk_buff *tipc_cfg_reply_unsigned_type(u16 tlv_type, u32 value)
 {
 	struct sk_buff *buf;
 	__be32 value_net;
@@ -118,6 +86,11 @@ struct sk_buff *tipc_cfg_reply_unsigned_type(u16 tlv_type, u32 value)
 	return buf;
 }
 
+static struct sk_buff *tipc_cfg_reply_unsigned(u32 value)
+{
+	return tipc_cfg_reply_unsigned_type(TIPC_TLV_UNSIGNED, value);
+}
+
 struct sk_buff *tipc_cfg_reply_string_type(u16 tlv_type, char *string)
 {
 	struct sk_buff *buf;
@@ -129,126 +102,37 @@ struct sk_buff *tipc_cfg_reply_string_type(u16 tlv_type, char *string)
 	return buf;
 }
 
-
-
-
-#if 0
-
-/* Now obsolete code for handling commands not yet implemented the new way */
-
-int tipc_cfg_cmd(const struct tipc_cmd_msg * msg,
-		 char *data,
-		 u32 sz,
-		 u32 *ret_size,
-		 struct tipc_portid *orig)
+static struct sk_buff *tipc_show_stats(void)
 {
-	int rv = -EINVAL;
-	u32 cmd = msg->cmd;
+	struct sk_buff *buf;
+	struct tlv_desc *rep_tlv;
+	char *pb;
+	int pb_len;
+	int str_len;
+	u32 value;
 
-	*ret_size = 0;
-	switch (cmd) {
-	case TIPC_REMOVE_LINK:
-	case TIPC_CMD_BLOCK_LINK:
-	case TIPC_CMD_UNBLOCK_LINK:
-		if (!cfg_check_connection(orig))
-			rv = link_control(msg->argv.link_name, msg->cmd, 0);
-		break;
-	case TIPC_ESTABLISH:
-		{
-			int connected;
-
-			tipc_isconnected(mng.conn_port_ref, &connected);
-			if (connected || !orig) {
-				rv = TIPC_FAILURE;
-				break;
-			}
-			rv = tipc_connect2port(mng.conn_port_ref, orig);
-			if (rv == TIPC_OK)
-				orig = 0;
-			break;
-		}
-	case TIPC_GET_PEER_ADDRESS:
-		*ret_size = link_peer_addr(msg->argv.link_name, data, sz);
-		break;
-	case TIPC_GET_ROUTES:
-		rv = TIPC_OK;
-		break;
-	default: {}
-	}
-	if (*ret_size)
-		rv = TIPC_OK;
-	return rv;
-}
+	if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED))
+		return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
 
-static void cfg_cmd_event(struct tipc_cmd_msg *msg,
-			  char *data,
-			  u32 sz,
-			  struct tipc_portid const *orig)
-{
-	int rv = -EINVAL;
-	struct tipc_cmd_result_msg rmsg;
-	struct iovec msg_sect[2];
-	int *arg;
+	value = ntohl(*(u32 *)TLV_DATA(req_tlv_area));
+	if (value != 0)
+		return tipc_cfg_reply_error_string("unsupported argument");
 
-	msg->cmd = ntohl(msg->cmd);
+	buf = tipc_cfg_reply_alloc(TLV_SPACE(ULTRA_STRING_MAX_LEN));
+	if (buf == NULL)
+		return NULL;
 
-	cfg_prepare_res_msg(msg->cmd, msg->usr_handle, rv, &rmsg, msg_sect,
-			    data, 0);
-	if (ntohl(msg->magic) != TIPC_MAGIC)
-		goto exit;
+	rep_tlv = (struct tlv_desc *)buf->data;
+	pb = TLV_DATA(rep_tlv);
+	pb_len = ULTRA_STRING_MAX_LEN;
 
-	switch (msg->cmd) {
-	case TIPC_CREATE_LINK:
-		if (!cfg_check_connection(orig))
-			rv = disc_create_link(&msg->argv.create_link);
-		break;
-	case TIPC_LINK_SUBSCRIBE:
-		{
-			struct subscr_data *sub;
-
-			if (mng.link_subscriptions > 64)
-				break;
-			sub = kmalloc(sizeof(*sub),
-							    GFP_ATOMIC);
-			if (sub == NULL) {
-				warn("Memory squeeze; dropped remote link subscription\n");
-				break;
-			}
-			INIT_LIST_HEAD(&sub->subd_list);
-			tipc_createport(mng.user_ref,
-					(void *)sub,
-					TIPC_HIGH_IMPORTANCE,
-					0,
-					0,
-					(tipc_conn_shutdown_event)cfg_linksubscr_cancel,
-					0,
-					0,
-					(tipc_conn_msg_event)cfg_linksubscr_cancel,
-					0,
-					&sub->port_ref);
-			if (!sub->port_ref) {
-				kfree(sub);
-				break;
-			}
-			memcpy(sub->usr_handle,msg->usr_handle,
-			       sizeof(sub->usr_handle));
-			sub->domain = msg->argv.domain;
-			list_add_tail(&sub->subd_list, &mng.link_subscribers);
-			tipc_connect2port(sub->port_ref, orig);
-			rmsg.retval = TIPC_OK;
-			tipc_send(sub->port_ref, 2u, msg_sect);
-			mng.link_subscriptions++;
-			return;
-		}
-	default:
-		rv = tipc_cfg_cmd(msg, data, sz, (u32 *)&msg_sect[1].iov_len, orig);
-	}
-	exit:
-	rmsg.result_len = htonl(msg_sect[1].iov_len);
-	rmsg.retval = htonl(rv);
-	tipc_cfg_respond(msg_sect, 2u, orig);
+	str_len = tipc_snprintf(pb, pb_len, "TIPC version " TIPC_MOD_VER "\n");
+	str_len += 1;	/* for "\0" */
+	skb_put(buf, TLV_SPACE(str_len));
+	TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len);
+
+	return buf;
 }
-#endif
 
 static struct sk_buff *cfg_enable_bearer(void)
 {
@@ -259,7 +143,7 @@ static struct sk_buff *cfg_enable_bearer(void)
 
 	args = (struct tipc_bearer_config *)TLV_DATA(req_tlv_area);
 	if (tipc_enable_bearer(args->name,
-			       ntohl(args->detect_scope),
+			       ntohl(args->disc_domain),
 			       ntohl(args->priority)))
 		return tipc_cfg_reply_error_string("unable to enable bearer");
 
@@ -290,66 +174,13 @@ static struct sk_buff *cfg_set_own_addr(void)
 	if (!tipc_addr_node_valid(addr))
 		return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
 						   " (node address)");
-	if (tipc_mode == TIPC_NET_MODE)
+	if (tipc_own_addr)
 		return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
 						   " (cannot change node address once assigned)");
+	if (!tipc_net_start(addr))
+		return tipc_cfg_reply_none();
 
-	/*
-	 * Must release all spinlocks before calling start_net() because
-	 * Linux version of TIPC calls eth_media_start() which calls
-	 * register_netdevice_notifier() which may block!
-	 *
-	 * Temporarily releasing the lock should be harmless for non-Linux TIPC,
-	 * but Linux version of eth_media_start() should really be reworked
-	 * so that it can be called with spinlocks held.
-	 */
-
-	spin_unlock_bh(&config_lock);
-	tipc_core_start_net(addr);
-	spin_lock_bh(&config_lock);
-	return tipc_cfg_reply_none();
-}
-
-static struct sk_buff *cfg_set_remote_mng(void)
-{
-	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(*(__be32 *)TLV_DATA(req_tlv_area));
-	tipc_remote_management = (value != 0);
-	return tipc_cfg_reply_none();
-}
-
-static struct sk_buff *cfg_set_max_publications(void)
-{
-	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(*(__be32 *)TLV_DATA(req_tlv_area));
-	if (value != delimit(value, 1, 65535))
-		return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
-						   " (max publications must be 1-65535)");
-	tipc_max_publications = value;
-	return tipc_cfg_reply_none();
-}
-
-static struct sk_buff *cfg_set_max_subscriptions(void)
-{
-	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(*(__be32 *)TLV_DATA(req_tlv_area));
-	if (value != delimit(value, 1, 65535))
-		return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
-						   " (max subscriptions must be 1-65535");
-	tipc_max_subscriptions = value;
-	return tipc_cfg_reply_none();
+	return tipc_cfg_reply_error_string("cannot change to network mode");
 }
 
 static struct sk_buff *cfg_set_max_ports(void)
@@ -361,78 +192,11 @@ static struct sk_buff *cfg_set_max_ports(void)
 	value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area));
 	if (value == tipc_max_ports)
 		return tipc_cfg_reply_none();
-	if (value != delimit(value, 127, 65535))
+	if (value < 127 || value > 65535)
 		return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
 						   " (max ports must be 127-65535)");
-	if (tipc_mode != TIPC_NOT_RUNNING)
-		return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
-			" (cannot change max ports while TIPC is active)");
-	tipc_max_ports = value;
-	return tipc_cfg_reply_none();
-}
-
-static struct sk_buff *cfg_set_max_zones(void)
-{
-	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(*(__be32 *)TLV_DATA(req_tlv_area));
-	if (value == tipc_max_zones)
-		return tipc_cfg_reply_none();
-	if (value != delimit(value, 1, 255))
-		return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
-						   " (max zones must be 1-255)");
-	if (tipc_mode == TIPC_NET_MODE)
-		return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
-			" (cannot change max zones once TIPC has joined a network)");
-	tipc_max_zones = value;
-	return tipc_cfg_reply_none();
-}
-
-static struct sk_buff *cfg_set_max_clusters(void)
-{
-	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(*(__be32 *)TLV_DATA(req_tlv_area));
-	if (value != delimit(value, 1, 1))
-		return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
-						   " (max clusters fixed at 1)");
-	return tipc_cfg_reply_none();
-}
-
-static struct sk_buff *cfg_set_max_nodes(void)
-{
-	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(*(__be32 *)TLV_DATA(req_tlv_area));
-	if (value == tipc_max_nodes)
-		return tipc_cfg_reply_none();
-	if (value != delimit(value, 8, 2047))
-		return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
-						   " (max nodes must be 8-2047)");
-	if (tipc_mode == TIPC_NET_MODE)
-		return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
-			" (cannot change max nodes once TIPC has joined a network)");
-	tipc_max_nodes = value;
-	return tipc_cfg_reply_none();
-}
-
-static struct sk_buff *cfg_set_max_slaves(void)
-{
-	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(*(__be32 *)TLV_DATA(req_tlv_area));
-	if (value != 0)
-		return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
-						   " (max secondary nodes fixed at 0)");
-	return tipc_cfg_reply_none();
+	return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
+		" (cannot change max ports while TIPC is active)");
 }
 
 static struct sk_buff *cfg_set_netid(void)
@@ -444,10 +208,10 @@ static struct sk_buff *cfg_set_netid(void)
 	value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area));
 	if (value == tipc_net_id)
 		return tipc_cfg_reply_none();
-	if (value != delimit(value, 1, 9999))
+	if (value < 1 || value > 9999)
 		return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
 						   " (network id must be 1-9999)");
-	if (tipc_mode == TIPC_NET_MODE)
+	if (tipc_own_addr)
 		return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
 			" (cannot change network id once TIPC has joined a network)");
 	tipc_net_id = value;
@@ -459,38 +223,23 @@ struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area
 {
 	struct sk_buff *rep_tlv_buf;
 
-	spin_lock_bh(&config_lock);
+	rtnl_lock();
 
 	/* Save request and reply details in a well-known location */
-
 	req_tlv_area = request_area;
 	req_tlv_space = request_space;
 	rep_headroom = reply_headroom;
 
 	/* Check command authorization */
-
-	if (likely(orig_node == tipc_own_addr)) {
+	if (likely(in_own_node(orig_node))) {
 		/* command is permitted */
-	} else if (cmd >= 0x8000) {
+	} else {
 		rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
 							  " (cannot be done remotely)");
 		goto exit;
-	} else if (!tipc_remote_management) {
-		rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NO_REMOTE);
-		goto exit;
-	}
-	else if (cmd >= 0x4000) {
-		u32 domain = 0;
-
-		if ((tipc_nametbl_translate(TIPC_ZM_SRV, 0, &domain) == 0) ||
-		    (domain != orig_node)) {
-			rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_ZONE_MSTR);
-			goto exit;
-		}
 	}
 
 	/* Call appropriate processing routine */
-
 	switch (cmd) {
 	case TIPC_CMD_NOOP:
 		rep_tlv_buf = tipc_cfg_reply_none();
@@ -519,19 +268,8 @@ struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area
 	case TIPC_CMD_SHOW_PORTS:
 		rep_tlv_buf = tipc_port_get_ports();
 		break;
-#if 0
-	case TIPC_CMD_SHOW_PORT_STATS:
-		rep_tlv_buf = port_show_stats(req_tlv_area, req_tlv_space);
-		break;
-	case TIPC_CMD_RESET_PORT_STATS:
-		rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED);
-		break;
-#endif
-	case TIPC_CMD_SET_LOG_SIZE:
-		rep_tlv_buf = tipc_log_resize_cmd(req_tlv_area, req_tlv_space);
-		break;
-	case TIPC_CMD_DUMP_LOG:
-		rep_tlv_buf = tipc_log_dump();
+	case TIPC_CMD_SHOW_STATS:
+		rep_tlv_buf = tipc_show_stats();
 		break;
 	case TIPC_CMD_SET_LINK_TOL:
 	case TIPC_CMD_SET_LINK_PRI:
@@ -547,57 +285,15 @@ struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area
 	case TIPC_CMD_SET_NODE_ADDR:
 		rep_tlv_buf = cfg_set_own_addr();
 		break;
-	case TIPC_CMD_SET_REMOTE_MNG:
-		rep_tlv_buf = cfg_set_remote_mng();
-		break;
 	case TIPC_CMD_SET_MAX_PORTS:
 		rep_tlv_buf = cfg_set_max_ports();
 		break;
-	case TIPC_CMD_SET_MAX_PUBL:
-		rep_tlv_buf = cfg_set_max_publications();
-		break;
-	case TIPC_CMD_SET_MAX_SUBSCR:
-		rep_tlv_buf = cfg_set_max_subscriptions();
-		break;
-	case TIPC_CMD_SET_MAX_ZONES:
-		rep_tlv_buf = cfg_set_max_zones();
-		break;
-	case TIPC_CMD_SET_MAX_CLUSTERS:
-		rep_tlv_buf = cfg_set_max_clusters();
-		break;
-	case TIPC_CMD_SET_MAX_NODES:
-		rep_tlv_buf = cfg_set_max_nodes();
-		break;
-	case TIPC_CMD_SET_MAX_SLAVES:
-		rep_tlv_buf = cfg_set_max_slaves();
-		break;
 	case TIPC_CMD_SET_NETID:
 		rep_tlv_buf = cfg_set_netid();
 		break;
-	case TIPC_CMD_GET_REMOTE_MNG:
-		rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_remote_management);
-		break;
 	case TIPC_CMD_GET_MAX_PORTS:
 		rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_ports);
 		break;
-	case TIPC_CMD_GET_MAX_PUBL:
-		rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_publications);
-		break;
-	case TIPC_CMD_GET_MAX_SUBSCR:
-		rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_subscriptions);
-		break;
-	case TIPC_CMD_GET_MAX_ZONES:
-		rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_zones);
-		break;
-	case TIPC_CMD_GET_MAX_CLUSTERS:
-		rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_clusters);
-		break;
-	case TIPC_CMD_GET_MAX_NODES:
-		rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_nodes);
-		break;
-	case TIPC_CMD_GET_MAX_SLAVES:
-		rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_slaves);
-		break;
 	case TIPC_CMD_GET_NETID:
 		rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_net_id);
 		break;
@@ -605,101 +301,42 @@ struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area
 		rep_tlv_buf =
 			tipc_cfg_reply_error_string(TIPC_CFG_NOT_NET_ADMIN);
 		break;
+	case TIPC_CMD_SET_MAX_ZONES:
+	case TIPC_CMD_GET_MAX_ZONES:
+	case TIPC_CMD_SET_MAX_SLAVES:
+	case TIPC_CMD_GET_MAX_SLAVES:
+	case TIPC_CMD_SET_MAX_CLUSTERS:
+	case TIPC_CMD_GET_MAX_CLUSTERS:
+	case TIPC_CMD_SET_MAX_NODES:
+	case TIPC_CMD_GET_MAX_NODES:
+	case TIPC_CMD_SET_MAX_SUBSCR:
+	case TIPC_CMD_GET_MAX_SUBSCR:
+	case TIPC_CMD_SET_MAX_PUBL:
+	case TIPC_CMD_GET_MAX_PUBL:
+	case TIPC_CMD_SET_LOG_SIZE:
+	case TIPC_CMD_SET_REMOTE_MNG:
+	case TIPC_CMD_GET_REMOTE_MNG:
+	case TIPC_CMD_DUMP_LOG:
+		rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
+							  " (obsolete command)");
+		break;
 	default:
 		rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
 							  " (unknown command)");
 		break;
 	}
 
-	/* Return reply buffer */
-exit:
-	spin_unlock_bh(&config_lock);
-	return rep_tlv_buf;
-}
+	WARN_ON(rep_tlv_buf->len > TLV_SPACE(ULTRA_STRING_MAX_LEN));
 
-static void cfg_named_msg_event(void *userdata,
-				u32 port_ref,
-				struct sk_buff **buf,
-				const unchar *msg,
-				u32 size,
-				u32 importance,
-				struct tipc_portid const *orig,
-				struct tipc_name_seq const *dest)
-{
-	struct tipc_cfg_msg_hdr *req_hdr;
-	struct tipc_cfg_msg_hdr *rep_hdr;
-	struct sk_buff *rep_buf;
-
-	/* Validate configuration message header (ignore invalid message) */
-
-	req_hdr = (struct tipc_cfg_msg_hdr *)msg;
-	if ((size < sizeof(*req_hdr)) ||
-	    (size != TCM_ALIGN(ntohl(req_hdr->tcm_len))) ||
-	    (ntohs(req_hdr->tcm_flags) != TCM_F_REQUEST)) {
-		warn("Invalid configuration message discarded\n");
-		return;
+	/* Append an error message if we cannot return all requested data */
+	if (rep_tlv_buf->len == TLV_SPACE(ULTRA_STRING_MAX_LEN)) {
+		if (*(rep_tlv_buf->data + ULTRA_STRING_MAX_LEN) != '\0')
+			sprintf(rep_tlv_buf->data + rep_tlv_buf->len -
+				sizeof(REPLY_TRUNCATED) - 1, REPLY_TRUNCATED);
 	}
 
-	/* Generate reply for request (if can't, return request) */
-
-	rep_buf = tipc_cfg_do_cmd(orig->node,
-				  ntohs(req_hdr->tcm_type),
-				  msg + sizeof(*req_hdr),
-				  size - sizeof(*req_hdr),
-				  BUF_HEADROOM + MAX_H_SIZE + sizeof(*rep_hdr));
-	if (rep_buf) {
-		skb_push(rep_buf, sizeof(*rep_hdr));
-		rep_hdr = (struct tipc_cfg_msg_hdr *)rep_buf->data;
-		memcpy(rep_hdr, req_hdr, sizeof(*rep_hdr));
-		rep_hdr->tcm_len = htonl(rep_buf->len);
-		rep_hdr->tcm_flags &= htons(~TCM_F_REQUEST);
-	} else {
-		rep_buf = *buf;
-		*buf = NULL;
-	}
-
-	/* NEED TO ADD CODE TO HANDLE FAILED SEND (SUCH AS CONGESTION) */
-	tipc_send_buf2port(port_ref, orig, rep_buf, rep_buf->len);
-}
-
-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;
-
-	res = tipc_createport(mng.user_ref, NULL, TIPC_CRITICAL_IMPORTANCE,
-			      NULL, NULL, NULL,
-			      NULL, cfg_named_msg_event, NULL,
-			      NULL, &mng.port_ref);
-	if (res)
-		goto failed;
-
-	seq.type = TIPC_CFG_SRV;
-	seq.lower = seq.upper = tipc_own_addr;
-	res = tipc_nametbl_publish_rsv(mng.port_ref, TIPC_ZONE_SCOPE, &seq);
-	if (res)
-		goto failed;
-
-	return 0;
-
-failed:
-	err("Unable to create configuration service\n");
-	tipc_detach(mng.user_ref);
-	mng.user_ref = 0;
-	return res;
-}
-
-void tipc_cfg_stop(void)
-{
-	if (mng.user_ref) {
-		tipc_detach(mng.user_ref);
-		mng.user_ref = 0;
-	}
+	/* Return reply buffer */
+exit:
+	rtnl_unlock();
+	return rep_tlv_buf;
 }