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authorAndreas Petlund <apetlund@simula.no>2010-02-18 05:48:19 +0100
committerDavid S. Miller <davem@davemloft.net>2010-02-19 00:43:09 +0100
commit7e38017557bc0b87434d184f8804cadb102bb903 (patch)
tree30c4a0793bd28f6731ade58786c06f9cf33115df /include/net/tcp.h
parentnet: TCP thin linear timeouts (diff)
downloadlinux-7e38017557bc0b87434d184f8804cadb102bb903.tar.xz
linux-7e38017557bc0b87434d184f8804cadb102bb903.zip
net: TCP thin dupack
This patch enables fast retransmissions after one dupACK for TCP if the stream is identified as thin. This will reduce latencies for thin streams that are not able to trigger fast retransmissions due to high packet interarrival time. This mechanism is only active if enabled by iocontrol or syscontrol and the stream is identified as thin. Signed-off-by: Andreas Petlund <apetlund@simula.no> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/tcp.h')
-rw-r--r--include/net/tcp.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 6278fc734abd..56f0aec40ed6 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -245,6 +245,7 @@ extern int sysctl_tcp_slow_start_after_idle;
extern int sysctl_tcp_max_ssthresh;
extern int sysctl_tcp_cookie_size;
extern int sysctl_tcp_thin_linear_timeouts;
+extern int sysctl_tcp_thin_dupack;
extern atomic_t tcp_memory_allocated;
extern struct percpu_counter tcp_sockets_allocated;