From: Allan Stephens Date: Mon, 28 Feb 2011 20:30:20 +0000 (-0500) Subject: tipc: Fix redundant link field handling in link protocol message X-Git-Tag: Ubuntu-5.13.0-19.19~28392^2~60^2~11 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=75f0aa49908992dbeb75710b72cbedb5cff9680f;p=mirror_ubuntu-jammy-kernel.git tipc: Fix redundant link field handling in link protocol message Ensures that the "redundant link exists" field of the LINK_PROTOCOL messages sent by a link endpoint is set if and only if the sending node has at least one other working link to the peer node. Previously, the bit was set only if there were at least 2 working links to the peer node, meaning the bit was incorrectly left unset in messages sent by a non-working link endpoint when exactly one alternate working link was available. The revised code now takes the state of the link sending the message into account when deciding if an alternate link exists. Signed-off-by: Allan Stephens Signed-off-by: Paul Gortmaker --- diff --git a/net/tipc/link.c b/net/tipc/link.c index 6ffae0e8809e..e5f96d5ef1ad 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -1898,6 +1898,7 @@ void tipc_link_send_proto_msg(struct link *l_ptr, u32 msg_typ, int probe_msg, struct sk_buff *buf = NULL; struct tipc_msg *msg = l_ptr->pmsg; u32 msg_size = sizeof(l_ptr->proto_msg); + int r_flag; if (link_blocked(l_ptr)) return; @@ -1954,7 +1955,8 @@ void tipc_link_send_proto_msg(struct link *l_ptr, u32 msg_typ, int probe_msg, msg_set_max_pkt(msg, l_ptr->max_pkt_target); } - msg_set_redundant_link(msg, tipc_node_redundant_links(l_ptr->owner)); + r_flag = (l_ptr->owner->working_links > tipc_link_is_up(l_ptr)); + msg_set_redundant_link(msg, r_flag); msg_set_linkprio(msg, l_ptr->priority); /* Ensure sequence number will not fit : */