tipc: add 128-bit node identifier

We add a 128-bit node identity, as an alternative to the currently used
32-bit node address.

For the sake of compatibility and to minimize message header changes
we retain the existing 32-bit address field. When not set explicitly by
the user, this field will be filled with a hash value generated from the
much longer node identity, and be used as a shorthand value for the
latter.

We permit either the address or the identity to be set by configuration,
but not both, so when the address value is set by a legacy user the
corresponding 128-bit node identity is generated based on the that value.

Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 6 deletions

diff --git a/net/tipc/node.c b/net/tipc/node.c
index 8a4b04933ecc..7b0c99347406 100644
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -883,11 +883,9 @@ void tipc_node_delete_links(struct net *net, int bearer_id)
 
 static void tipc_node_reset_links(struct tipc_node *n)
 {
-	char addr_string[16];
 	int i;
 
-	pr_warn("Resetting all links to %s\n",
-		tipc_addr_string_fill(addr_string, n->addr));
+	pr_warn("Resetting all links to %x\n", n->addr);
 
 	for (i = 0; i < MAX_BEARERS; i++) {
 		tipc_node_link_down(n, i, false);
@@ -1074,15 +1072,13 @@ illegal_evt:
 static void node_lost_contact(struct tipc_node *n,
 			      struct sk_buff_head *inputq)
 {
-	char addr_string[16];
 	struct tipc_sock_conn *conn, *safe;
 	struct tipc_link *l;
 	struct list_head *conns = &n->conn_sks;
 	struct sk_buff *skb;
 	uint i;
 
-	pr_debug("Lost contact with %s\n",
-		 tipc_addr_string_fill(addr_string, n->addr));
+	pr_debug("Lost contact with %x\n", n->addr);
 
 	/* Clean up broadcast state */
 	tipc_bcast_remove_peer(n->net, n->bc_entry.link);