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authorIlpo Järvinen <ilpo.jarvinen@helsinki.fi>2009-03-14 14:23:05 +0000
committerDavid S. Miller <davem@davemloft.net>2009-03-15 20:09:54 -0700
commit0c54b85f2828128274f319a1eb3ce7f604fe2a53 (patch)
tree8ff84b9aa9cd4775f244c2421e11adfbd206a7bf /include/linux/tcp.h
parent72211e90501f954f586481c25521c3724cda3cc7 (diff)
downloadop-kernel-dev-0c54b85f2828128274f319a1eb3ce7f604fe2a53.zip
op-kernel-dev-0c54b85f2828128274f319a1eb3ce7f604fe2a53.tar.gz
tcp: simplify tcp_current_mss
There's very little need for most of the callsites to get tp->xmit_goal_size updated. That will cost us divide as is, so slice the function in two. Also, the only users of the tp->xmit_goal_size are directly behind tcp_current_mss(), so there's no need to store that variable into tcp_sock at all! The drop of xmit_goal_size currently leaves 16-bit hole and some reorganization would again be necessary to change that (but I'm aiming to fill that hole with u16 xmit_goal_size_segs to cache the results of the remaining divide to get that tso on regression). Bring xmit_goal_size parts into tcp.c Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Cc: Evgeniy Polyakov <zbr@ioremap.net> Cc: Ingo Molnar <mingo@elte.hu> 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, 0 insertions, 1 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 4b86ad7..ad2021c 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -248,7 +248,6 @@ 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; /* Goal for segmenting output packets */
/*
* Header prediction flags
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