tipc: introduce jumbo frame support for broadcast
Until now, we have only been supporting a fix MTU size of 1500 bytes
for all broadcast media, irrespective of their actual capability.
We now make the broadcast MTU adaptable to the carrying media, i.e.,
we use the smallest MTU supported by any of the interfaces attached
to TIPC.
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index 62f47ec..b39f631 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -464,6 +464,19 @@
rcu_read_unlock();
}
+int tipc_bearer_mtu(struct net *net, u32 bearer_id)
+{
+ int mtu = 0;
+ struct tipc_bearer *b;
+
+ rcu_read_lock();
+ b = rcu_dereference_rtnl(tipc_net(net)->bearer_list[bearer_id]);
+ if (b)
+ mtu = b->mtu;
+ rcu_read_unlock();
+ return mtu;
+}
+
/* tipc_bearer_xmit() -send buffer to destination over bearer
*/
void tipc_bearer_xmit(struct net *net, u32 bearer_id,