tipc: convert legacy nl node dump to nl compat

Convert TIPC_CMD_GET_NODES to compat dumpit and remove global node
counter solely used by the legacy API.

Signed-off-by: Richard Alpe <richard.alpe@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/tipc/config.c b/net/tipc/config.c
index df41082..74babd7 100644 (file)
--- a/net/tipc/config.c
+++ b/net/tipc/config.c
@@ -205,10 +205,6 @@ struct sk_buff *tipc_cfg_do_cmd(struct net *net, u32 orig_node, u16 cmd,
        case TIPC_CMD_NOOP:
                rep_tlv_buf = tipc_cfg_reply_none();
                break;
-       case TIPC_CMD_GET_NODES:
-               rep_tlv_buf = tipc_node_get_nodes(net, req_tlv_area,
-                                                 req_tlv_space);
-               break;
        case TIPC_CMD_SHOW_STATS:
                rep_tlv_buf = tipc_show_stats();
                break;

diff --git a/net/tipc/netlink_compat.c b/net/tipc/netlink_compat.c
index d23075e..0dc448e 100644 (file)
--- a/net/tipc/netlink_compat.c
+++ b/net/tipc/netlink_compat.c
@@ -37,6 +37,7 @@
 #include "link.h"
 #include "name_table.h"
 #include "socket.h"
+#include "node.h"
 #include <net/genetlink.h>
 #include <linux/tipc_config.h>
 
@@ -835,6 +836,21 @@ static int tipc_nl_compat_media_dump(struct tipc_nl_compat_msg *msg,
                            nla_len(media[TIPC_NLA_MEDIA_NAME]));
 }
 
+static int tipc_nl_compat_node_dump(struct tipc_nl_compat_msg *msg,
+                                   struct nlattr **attrs)
+{
+       struct tipc_node_info node_info;
+       struct nlattr *node[TIPC_NLA_NODE_MAX + 1];
+
+       nla_parse_nested(node, TIPC_NLA_NODE_MAX, attrs[TIPC_NLA_NODE], NULL);
+
+       node_info.addr = htonl(nla_get_u32(node[TIPC_NLA_NODE_ADDR]));
+       node_info.up = htonl(nla_get_flag(node[TIPC_NLA_NODE_UP]));
+
+       return tipc_add_tlv(msg->rep, TIPC_TLV_NODE_INFO, &node_info,
+                           sizeof(node_info));
+}
+
 static int tipc_nl_compat_handle(struct tipc_nl_compat_msg *msg)
 {
        struct tipc_nl_compat_cmd_dump dump;
@@ -903,6 +919,11 @@ static int tipc_nl_compat_handle(struct tipc_nl_compat_msg *msg)
                dump.dumpit = tipc_nl_media_dump;
                dump.format = tipc_nl_compat_media_dump;
                return tipc_nl_compat_dumpit(&dump, msg);
+       case TIPC_CMD_GET_NODES:
+               msg->rep_size = ULTRA_STRING_MAX_LEN;
+               dump.dumpit = tipc_nl_node_dump;
+               dump.format = tipc_nl_compat_node_dump;
+               return tipc_nl_compat_dumpit(&dump, msg);
        }
 
        return -EOPNOTSUPP;
@@ -1011,6 +1032,7 @@ static int tipc_nl_compat_tmp_wrap(struct sk_buff *skb, struct genl_info *info)
        case TIPC_CMD_SHOW_NAME_TABLE:
        case TIPC_CMD_SHOW_PORTS:
        case TIPC_CMD_GET_MEDIA_NAMES:
+       case TIPC_CMD_GET_NODES:
                return tipc_nl_compat_recv(skb, info);
        }
 

diff --git a/net/tipc/node.c b/net/tipc/node.c
index 46b87f7..ddaa2bb 100644 (file)
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -120,7 +120,6 @@ struct tipc_node *tipc_node_create(struct net *net, u32 addr)
        list_add_tail_rcu(&n_ptr->list, &temp_node->list);
        n_ptr->action_flags = TIPC_WAIT_PEER_LINKS_DOWN;
        n_ptr->signature = INVALID_NODE_SIG;
-       tn->num_nodes++;
 exit:
        spin_unlock_bh(&tn->node_list_lock);
        return n_ptr;
@@ -131,8 +130,6 @@ static void tipc_node_delete(struct tipc_net *tn, struct tipc_node *n_ptr)
        list_del_rcu(&n_ptr->list);
        hlist_del_rcu(&n_ptr->hash);
        kfree_rcu(n_ptr, rcu);
-
-       tn->num_nodes--;
 }
 
 void tipc_node_stop(struct net *net)
@@ -407,57 +404,6 @@ static void node_lost_contact(struct tipc_node *n_ptr)
        }
 }
 
-struct sk_buff *tipc_node_get_nodes(struct net *net, const void *req_tlv_area,
-                                   int req_tlv_space)
-{
-       struct tipc_net *tn = net_generic(net, tipc_net_id);
-       u32 domain;
-       struct sk_buff *buf;
-       struct tipc_node *n_ptr;
-       struct tipc_node_info node_info;
-       u32 payload_size;
-
-       if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_NET_ADDR))
-               return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
-
-       domain = ntohl(*(__be32 *)TLV_DATA(req_tlv_area));
-       if (!tipc_addr_domain_valid(domain))
-               return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
-                                                  " (network address)");
-
-       spin_lock_bh(&tn->node_list_lock);
-       if (!tn->num_nodes) {
-               spin_unlock_bh(&tn->node_list_lock);
-               return tipc_cfg_reply_none();
-       }
-
-       /* For now, get space for all other nodes */
-       payload_size = TLV_SPACE(sizeof(node_info)) * tn->num_nodes;
-       if (payload_size > 32768u) {
-               spin_unlock_bh(&tn->node_list_lock);
-               return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
-                                                  " (too many nodes)");
-       }
-       spin_unlock_bh(&tn->node_list_lock);
-
-       buf = tipc_cfg_reply_alloc(payload_size);
-       if (!buf)
-               return NULL;
-
-       /* Add TLVs for all nodes in scope */
-       rcu_read_lock();
-       list_for_each_entry_rcu(n_ptr, &tn->node_list, list) {
-               if (!tipc_in_scope(domain, n_ptr->addr))
-                       continue;
-               node_info.addr = htonl(n_ptr->addr);
-               node_info.up = htonl(tipc_node_is_up(n_ptr));
-               tipc_cfg_append_tlv(buf, TIPC_TLV_NODE_INFO,
-                                   &node_info, sizeof(node_info));
-       }
-       rcu_read_unlock();
-       return buf;
-}
-
 /**
  * tipc_node_get_linkname - get the name of a link
  *

diff --git a/net/tipc/node.h b/net/tipc/node.h
index 59dafee..3d18c66 100644 (file)
--- a/net/tipc/node.h
+++ b/net/tipc/node.h
@@ -142,8 +142,6 @@ void tipc_node_link_down(struct tipc_node *n_ptr, struct tipc_link *l_ptr);
 void tipc_node_link_up(struct tipc_node *n_ptr, struct tipc_link *l_ptr);
 int tipc_node_active_links(struct tipc_node *n_ptr);
 int tipc_node_is_up(struct tipc_node *n_ptr);
-struct sk_buff *tipc_node_get_nodes(struct net *net, const void *req_tlv_area,
-                                   int req_tlv_space);
 int tipc_node_get_linkname(struct net *net, u32 bearer_id, u32 node,
                           char *linkname, size_t len);
 void tipc_node_unlock(struct tipc_node *node);