summaryrefslogtreecommitdiff
path: root/net/tipc
diff options
context:
space:
mode:
authorJon Maloy <jon.maloy@ericsson.com>2018-07-06 20:10:03 +0200
committerDavid S. Miller <davem@davemloft.net>2018-07-07 19:49:01 +0900
commit2a57f182420174c7fd4b19db979a2d135231a963 (patch)
tree2995b49645166b4f744bfc775079b00b6f6fdf78 /net/tipc
parent0f62aeec0f05e579ea9fd5c09edda48bd8bed73a (diff)
tipc: fix wrong return value from function tipc_node_try_addr()
The function for checking if there is an node address conflict is supposed to return a suggestion for a new address if it finds a conflict, and zero otherwise. But in case the peer being checked is previously unknown it does instead return a "suggestion" for the checked address itself. This results in a DSC_TRIAL_FAIL_MSG being sent unecessarily to the peer, and sometimes makes the trial period starting over again. Fixes: 25b0b9c4e835 ("tipc: handle collisions of 32-bit node address hash values") Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc')
-rw-r--r--net/tipc/node.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/net/tipc/node.c b/net/tipc/node.c
index 6a44eb812baf..0453bd451ce8 100644
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -797,6 +797,7 @@ static u32 tipc_node_suggest_addr(struct net *net, u32 addr)
}
/* tipc_node_try_addr(): Check if addr can be used by peer, suggest other if not
+ * Returns suggested address if any, otherwise 0
*/
u32 tipc_node_try_addr(struct net *net, u8 *id, u32 addr)
{
@@ -819,12 +820,14 @@ u32 tipc_node_try_addr(struct net *net, u8 *id, u32 addr)
if (n) {
addr = n->addr;
tipc_node_put(n);
+ return addr;
}
- /* Even this node may be in trial phase */
+
+ /* Even this node may be in conflict */
if (tn->trial_addr == addr)
return tipc_node_suggest_addr(net, addr);
- return addr;
+ return 0;
}
void tipc_node_check_dest(struct net *net, u32 addr,