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authorGerrit Renker <gerrit@erg.abdn.ac.uk>2006-12-09 21:07:37 -0500
committerDavid S. Miller <davem@sunset.davemloft.net>2006-12-11 17:34:52 -0500
commit9f8681db961de6d75e43844e9664f1f81e05e1b7 (patch)
tree07679d0ea408127119bc8b2ce74b38031da204e5 /net/atm/pvc.c
parentde553c189e3faa0d0c38f366f73379b46587b80e (diff)
[DCCP] ccid3: Shift window counter computation
This puts the window counter computation [RFC 4342, 8.1] into a separate function which is called whenever a new packet is ready for immediate transmission in ccid3_hc_tx_send_packet. Justification: The window counter update was previously computed after the packet was sent. This has two drawbacks, both fixed by this patch: 1) re-compute another timestamp almost directly after the packet was sent (expensive), 2) the CCVal for the window counter is needed at the instant the packet is sent. Further details: The initialisation of the window counter is left in the state NO_SENT, as before. The algorithm will do nothing if either RTT is initialised to 0 (which is ok) or if the RTT value remains below 4 microseconds (which is almost pathological). Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Acked-by: Ian McDonald <ian.mcdonald@jandi.co.nz> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Diffstat (limited to 'net/atm/pvc.c')
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