tipc: support 128bit node identity for peer removing
We add the support to remove a specific node down with 128bit
node identifier, as an alternative to legacy 32-bit node address.
example:
$tipc peer remove identiy <1001002|16777777>
Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Hoang Le <hoang.h.le@dektech.com.au>
Link: https://lore.kernel.org/r/20201203035045.4564-1-hoang.h.le@dektech.com.au
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
diff --git a/net/tipc/node.c b/net/tipc/node.c
index c4b87d2..86b4d7f 100644
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -2222,6 +2222,9 @@ int tipc_nl_peer_rm(struct sk_buff *skb, struct genl_info *info)
struct tipc_net *tn = net_generic(net, tipc_net_id);
struct nlattr *attrs[TIPC_NLA_NET_MAX + 1];
struct tipc_node *peer, *temp_node;
+ u8 node_id[NODE_ID_LEN];
+ u64 *w0 = (u64 *)&node_id[0];
+ u64 *w1 = (u64 *)&node_id[8];
u32 addr;
int err;
@@ -2235,10 +2238,22 @@ int tipc_nl_peer_rm(struct sk_buff *skb, struct genl_info *info)
if (err)
return err;
- if (!attrs[TIPC_NLA_NET_ADDR])
- return -EINVAL;
+ /* attrs[TIPC_NLA_NET_NODEID] and attrs[TIPC_NLA_NET_ADDR] are
+ * mutually exclusive cases
+ */
+ if (attrs[TIPC_NLA_NET_ADDR]) {
+ addr = nla_get_u32(attrs[TIPC_NLA_NET_ADDR]);
+ if (!addr)
+ return -EINVAL;
+ }
- addr = nla_get_u32(attrs[TIPC_NLA_NET_ADDR]);
+ if (attrs[TIPC_NLA_NET_NODEID]) {
+ if (!attrs[TIPC_NLA_NET_NODEID_W1])
+ return -EINVAL;
+ *w0 = nla_get_u64(attrs[TIPC_NLA_NET_NODEID]);
+ *w1 = nla_get_u64(attrs[TIPC_NLA_NET_NODEID_W1]);
+ addr = hash128to32(node_id);
+ }
if (in_own_node(net, addr))
return -ENOTSUPP;