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authorIlpo Järvinen <ilpo.jarvinen@helsinki.fi>2009-03-15 01:45:16 +0300
committerDavid S. Miller <davem@davemloft.net>2009-03-16 06:09:55 +0300
commit2a3a041c4e2c1685e668b280c121a5a40a029a03 (patch)
treedab327c0cbebec79968c3c2207d064a9152857f0 /include/linux/tcp.h
parent0c54b85f2828128274f319a1eb3ce7f604fe2a53 (diff)
downloadlinux-2a3a041c4e2c1685e668b280c121a5a40a029a03.tar.xz
tcp: cache result of earlier divides when mss-aligning things
The results is very unlikely change every so often so we hardly need to divide again after doing that once for a connection. Yet, if divide still becomes necessary we detect that and do the right thing and again settle for non-divide state. Takes the u16 space which was previously taken by the plain xmit_size_goal. This should take care part of the tso vs non-tso difference we found earlier. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/tcp.h')
-rw-r--r--include/linux/tcp.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index ad2021ccc55a..9d5078bd23a3 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -248,6 +248,7 @@ struct tcp_sock {
/* inet_connection_sock has to be the first member of tcp_sock */
struct inet_connection_sock inet_conn;
u16 tcp_header_len; /* Bytes of tcp header to send */
+ u16 xmit_size_goal_segs; /* Goal for segmenting output packets */
/*
* Header prediction flags