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tipc: apply bearer link tolerance on running links

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Currently, the default link tolerance set in struct tipc_bearer only
has effect on links going up after that moment. I.e., a user has to
reset all the node's links across that bearer to have the new value
applied. This is too limiting and disturbing on a running cluster to
be useful.

We now change this so that also already existing links are updated
dynamically, without any need for a reset, when the bearer value is
changed. We leverage the already existing per-link functionality
for this to achieve the wanted effect.

Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jon Maloy
2018-02-14 13:34:39 +01:00
committed by David S. Miller
parent a92ac140fc
commit 37c64cf63b
4 changed files with 32 additions and 4 deletions
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24
net/tipc/node.c
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@@ -1618,6 +1618,30 @@ discard:
kfree_skb(skb);
}
void tipc_node_apply_tolerance(struct net *net, struct tipc_bearer *b)
{
struct tipc_net *tn = tipc_net(net);
int bearer_id = b->identity;
struct sk_buff_head xmitq;
struct tipc_link_entry *e;
struct tipc_node *n;
__skb_queue_head_init(&xmitq);
rcu_read_lock();
list_for_each_entry_rcu(n, &tn->node_list, list) {
tipc_node_write_lock(n);
e = &n->links[bearer_id];
if (e->link)
tipc_link_set_tolerance(e->link, b->tolerance, &xmitq);
tipc_node_write_unlock(n);
tipc_bearer_xmit(net, bearer_id, &xmitq, &e->maddr);
}
rcu_read_unlock();
}
int tipc_nl_peer_rm(struct sk_buff *skb, struct genl_info *info)
{
struct net *net = sock_net(skb->sk);