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tipc: reset all unicast links when broadcast send link fails

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In test situations with many nodes and a heavily stressed system we have
observed that the transmission broadcast link may fail due to an
excessive number of retransmissions of the same packet. In such
situations we need to reset all unicast links to all peers, in order to
reset and re-synchronize the broadcast link.

In this commit, we add a new function tipc_bearer_reset_all() to be used
in such situations. The function scans across all bearers and resets all
their pertaining links.

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 Paul Maloy
2016-07-11 16:08:37 -04:00
committed by David S. Miller
parent a71eb72035
commit 1fc07f3e15
3 changed files with 27 additions and 4 deletions
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15
net/tipc/bearer.c
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@@ -330,6 +330,21 @@ static int tipc_reset_bearer(struct net *net, struct tipc_bearer *b)
return 0;
}
/* tipc_bearer_reset_all - reset all links on all bearers
*/
void tipc_bearer_reset_all(struct net *net)
{
struct tipc_net *tn = tipc_net(net);
struct tipc_bearer *b;
int i;
for (i = 0; i < MAX_BEARERS; i++) {
b = rcu_dereference_rtnl(tn->bearer_list[i]);
if (b)
tipc_reset_bearer(net, b);
}
}
/**
* bearer_disable
*