tree 00caa55dc0c2a86c44883154986885f0421d1251
parent 2a3a041c4e2c1685e668b280c121a5a40a029a03
author Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> 1237040587 +0000
committer David S. Miller <davem@davemloft.net> 1237172995 -0700

tcp: make sure xmit goal size never becomes zero

It's not too likely to happen, would basically require crafted
packets (must hit the max guard in tcp_bound_to_half_wnd()).
It seems that nothing that bad would happen as there's tcp_mems
and congestion window that prevent runaway at some point from
hurting all too much (I'm not that sure what all those zero
sized segments we would generate do though in write queue).
Preventing it regardless is certainly the best way to go.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Cc: Evgeniy Polyakov <zbr@ioremap.net>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>