[iproute2-next] tipc: support 128bit node identity for peer removing

[iproute2-next] tipc: support 128bit node identity for peer removing

[Hoang Huu Le]

From: Hoang Le <hoang.h.le@dektech.com.au>

Problem:
In kernel upstream, we add the support to set node identity with
128bit. However, we are still using legacy format in command tipc
peer removing. Then, we got a problem when trying to remove
offline node i.e:

$ tipc node list
Node Identity                    Hash     State
d6babc1c1c6d                     1cbcd7ca down

$ tipc peer remove address d6babc1c1c6d
invalid network address, syntax: Z.C.N
error: No such device or address

Solution:
We add the support to remove a specific node down with 128bit
node identifier, as an alternative to legacy 32-bit node address.

Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Hoang Huu Le <hoang.h.le@dektech.com.au>
---
 tipc/peer.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 52 insertions(+), 1 deletion(-)

diff --git a/tipc/peer.c b/tipc/peer.c
index f6380777033d..f14ec35e6f71 100644
--- a/tipc/peer.c
+++ b/tipc/peer.c
@@ -59,17 +59,68 @@ static int cmd_peer_rm_addr(struct nlmsghdr *nlh, const struct cmd *cmd,
 	return msg_doit(nlh, NULL, NULL);
 }
 
+static int cmd_peer_rm_nodeid(struct nlmsghdr *nlh, const struct cmd *cmd,
+			      struct cmdl *cmdl, void *data)
+{
+	char buf[MNL_SOCKET_BUFFER_SIZE];
+	__u8 id[16] = {0,};
+	__u64 *w0 = (__u64 *)&id[0];
+	__u64 *w1 = (__u64 *)&id[8];
+	struct nlattr *nest;
+	char *str;
+
+	if (cmdl->argc != cmdl->optind + 1) {
+		fprintf(stderr, "Usage: %s peer remove identity NODEID\n",
+			cmdl->argv[0]);
+		return -EINVAL;
+	}
+
+	str = shift_cmdl(cmdl);
+	if (str2nodeid(str, id)) {
+		fprintf(stderr, "Invalid node identity\n");
+		return -EINVAL;
+	}
+
+	nlh = msg_init(buf, TIPC_NL_PEER_REMOVE);
+	if (!nlh) {
+		fprintf(stderr, "error, message initialisation failed\n");
+		return -1;
+	}
+
+	nest = mnl_attr_nest_start(nlh, TIPC_NLA_NET);
+	mnl_attr_put_u64(nlh, TIPC_NLA_NET_NODEID, *w0);
+	mnl_attr_put_u64(nlh, TIPC_NLA_NET_NODEID_W1, *w1);
+	mnl_attr_nest_end(nlh, nest);
+
+	return msg_doit(nlh, NULL, NULL);
+}
+
 static void cmd_peer_rm_help(struct cmdl *cmdl)
+{
+	fprintf(stderr, "Usage: %s peer remove PROPERTY\n\n"
+		"PROPERTIES\n"
+		" identity NODEID         - Remove peer node identity\n",
+		cmdl->argv[0]);
+}
+
+static void cmd_peer_rm_addr_help(struct cmdl *cmdl)
 {
 	fprintf(stderr, "Usage: %s peer remove address ADDRESS\n",
 		cmdl->argv[0]);
 }
 
+static void cmd_peer_rm_nodeid_help(struct cmdl *cmdl)
+{
+	fprintf(stderr, "Usage: %s peer remove identity NODEID\n",
+		cmdl->argv[0]);
+}
+
 static int cmd_peer_rm(struct nlmsghdr *nlh, const struct cmd *cmd,
 			struct cmdl *cmdl, void *data)
 {
 	const struct cmd cmds[] = {
-		{ "address",	cmd_peer_rm_addr,	cmd_peer_rm_help },
+		{ "address",  cmd_peer_rm_addr,   cmd_peer_rm_addr_help },
+		{ "identity", cmd_peer_rm_nodeid, cmd_peer_rm_nodeid_help },
 		{ NULL }
 	};
 
-- 
2.25.1

Re: [iproute2-next] tipc: support 128bit node identity for peer removing

[David Ahern]

On 8/26/20 8:30 PM, Hoang Huu Le wrote:
> From: Hoang Le <hoang.h.le@dektech.com.au>
> 
> Problem:
> In kernel upstream, we add the support to set node identity with
> 128bit. However, we are still using legacy format in command tipc
> peer removing. Then, we got a problem when trying to remove
> offline node i.e:
> 
> $ tipc node list
> Node Identity                    Hash     State
> d6babc1c1c6d                     1cbcd7ca down
> 
> $ tipc peer remove address d6babc1c1c6d
> invalid network address, syntax: Z.C.N
> error: No such device or address
> 
> Solution:
> We add the support to remove a specific node down with 128bit
> node identifier, as an alternative to legacy 32-bit node address.
> 
> Acked-by: Jon Maloy <jmaloy@redhat.com>
> Signed-off-by: Hoang Huu Le <hoang.h.le@dektech.com.au>
> ---
>  tipc/peer.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
>  1 file changed, 52 insertions(+), 1 deletion(-)
> 

applied to iproute2-next. Thanks