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[TCP]: Limit processing lost_retrans loop to work-to-do cases

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This addition of lost_retrans_low to tcp_sock might be
unnecessary, it's not clear how often lost_retrans worker is
executed when there wasn't work to do.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ilpo Järvinen 2007-10-11 17:36:13 -07:00 • committed by David S. Miller
parent f785a8e28b
commit b08d6cb22c
3 changed files with 15 additions and 3 deletions
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2
include/linux/tcp.h
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@ -348,6 +348,8 @@ struct tcp_sock {
int lost_cnt_hint;
int retransmit_cnt_hint;
u32 lost_retrans_low; /* Sent seq after any rxmit (lowest) */
u16 advmss; /* Advertised MSS */
u16 prior_ssthresh; /* ssthresh saved at recovery start */
u32 lost_out; /* Lost packets */