path: root/drivers/net
diff options
authorEric Dumazet <edumazet@google.com>2013-08-18 19:08:07 -0700
committerDavid S. Miller <davem@davemloft.net>2013-08-20 15:05:04 -0700
commit734d2725db879f3f6fcdc2b1d2a5deae105f5e95 (patch)
tree44648101fe8a2960add4c7d3b690f3fbcaac8841 /drivers/net
parentvhost: Include linux/uio.h instead of linux/socket.h (diff)
ipv4: raise IP_MAX_MTU to theoretical limit
As discussed last year [1], there is no compelling reason to limit IPv4 MTU to 0xFFF0, while real limit is 0xFFFF [1] : http://marc.info/?l=linux-netdev&m=135607247609434&w=2 Willem raised this issue again because some of our internal regression tests broke after lo mtu being set to 65536. IP_MTU reports 0xFFF0, and the test attempts to send a RAW datagram of mtu + 1 bytes, expecting the send() to fail, but it does not. Alexey raised interesting points about TCP MSS, that should be addressed in follow-up patches in TCP stack if needed, as someone could also set an odd mtu anyway. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
0 files changed, 0 insertions, 0 deletions