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authorGerrit Renker <gerrit@erg.abdn.ac.uk>2010-06-22 01:14:35 +0000
committerDavid S. Miller <davem@davemloft.net>2010-06-25 21:33:15 -0700
commit59b80802a8a18b64d38b51aa168253684b2649d5 (patch)
treeb6be92f705d00796733e03e43041605b74d0ce5f /net/ipv4/arp.c
parenta7d13fbf85375698879d16f118af77fbfcc2de44 (diff)
dccp: make implementation of Syn-RTT symmetric
This patch is thanks to Andre Noll who reported the issue and helped testing. The Syn-RTT sampled during the initial handshake currently only works for the client sending the DCCP-Request. TFRC penalizes the absence of an RTT sample with a very slow initial speed (1 packet per second), which delays slow-start significantly, resulting in sluggish performance. This patch mirrors the "Syn RTT" principle by adding a timestamp also onto the DCCP-Response, producing an RTT sample when the (Data)Ack completing the handshake arrives. Also changed the documentation to 'TFRC' since Syn RTTs are also used by CCID-4. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/arp.c')
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