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tipc: introduce jumbo frame support for broadcast

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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>
This commit is contained in:
Jon Paul Maloy
2015-10-22 08:51:43 -04:00
committed by David S. Miller
parent b06b281e79
commit 959e1781aa
7 changed files with 39 additions and 6 deletions
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2
net/tipc/socket.c
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@@ -689,7 +689,7 @@ static int tipc_sendmcast(struct socket *sock, struct tipc_name_seq *seq,
msg_set_hdr_sz(mhdr, MCAST_H_SIZE);
new_mtu:
mtu = tipc_bcast_get_mtu();
mtu = tipc_bcast_get_mtu(net);
rc = tipc_msg_build(mhdr, msg, 0, dsz, mtu, pktchain);
if (unlikely(rc < 0))
return rc;