Commit 43fcd906 authored by Hoang Le's avatar Hoang Le Committed by Jakub Kicinski
Browse files

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: default avatarJon Maloy <jmaloy@redhat.com>
Signed-off-by: default avatarHoang 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: default avatarJakub Kicinski <kuba@kernel.org>
parent 7f356166

net/tipc/node.c

+18 −3
Original line number Diff line number Diff line
@@ -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])

	/* 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;

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