From 43fcd906d9c1048f2492a412917e70ce91775dfb Mon Sep 17 00:00:00 2001 From: Hoang Le Date: Thu, 3 Dec 2020 10:50:45 +0700 Subject: [PATCH] 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 Signed-off-by: Hoang Le Link: https://lore.kernel.org/r/20201203035045.4564-1-hoang.h.le@dektech.com.au Signed-off-by: Jakub Kicinski --- net/tipc/node.c | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) diff --git a/net/tipc/node.c b/net/tipc/node.c index c4b87d2cc0e3..86b4d7ffb47a 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; -- 2.11.0