[TCP] FRTO: Improve interoperability with other undo_marker users

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Basically this change enables it, previously other undo_marker
users were left with nothing. Reverse undo_marker logic
completely to get it set right in CA_Loss. On the other hand,
when spurious RTO is detected, clear it. Clearing might be too
heavy for some scenarios but seems safe enough starting point
for now and shouldn't have much effect except in majority of
cases (if in any).

By adding a new FLAG_ we avoid looping through write_queue when
RTO occurs.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Ilpo Järvinen 2007-09-20 11:34:38 -07:00 • committed by David S. Miller

parent 7c46a03e67

commit 009a2e3e4e

1 changed files with 27 additions and 15 deletions

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net/ipv4/tcp_input.c

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