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authorMichael Kerrisk <mtk.manpages@gmail.com>2008-11-21 14:50:42 -0500
committerMichael Kerrisk <mtk.manpages@gmail.com>2008-11-25 20:54:16 -0500
commit6a48d4b1d3532260caaea4ff9b4b1a3061f3eeea (patch)
tree1fc692a874453ae9c576e922f7a1d23084e54c91 /man7/tcp.7
parente604d9fabb5c96062073c8c5ef18b53e43be7f94 (diff)
downloadman-pages-6a48d4b1d3532260caaea4ff9b4b1a3061f3eeea.tar.gz
tcp.7: Document /proc file tcp_dma_copybreak (new in Linux 2.6.24)
Text taken from Documentation/networking/ip-sysctl.txt Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Diffstat (limited to 'man7/tcp.7')
-rw-r--r--man7/tcp.77
1 files changed, 7 insertions, 0 deletions
diff --git a/man7/tcp.7 b/man7/tcp.7
index 382308ec0a..c23bf29e93 100644
--- a/man7/tcp.7
+++ b/man7/tcp.7
@@ -322,6 +322,13 @@ The algorithm "reno" is always available,
but additional choices may be available depending on kernel configuration.
The default value for this file is set as part of kernel configuration.
.TP
+.IR tcp_dma_copybreak " (integer; default: 4096; since Linux 2.6.24)"
+Lower limit, in bytes, of the size of socket reads that will be
+offloaded to a DMA copy engine, if one is present in the system
+and the kernel was configured with the
+.B CONFIG_NET_DMA
+option.
+.TP
.IR tcp_dsack " (Boolean; default: enabled; since Linux 2.4)"
.\" Since 2.4.0-test7
Enable RFC\ 2883 TCP Duplicate SACK support.