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| author | Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> | 2009-03-14 22:45:16 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-03-15 20:09:55 -0700 |
| commit | 2a3a041c4e2c1685e668b280c121a5a40a029a03 (patch) | |
| tree | dab327c0cbebec79968c3c2207d064a9152857f0 /include/linux/tcp.h | |
| parent | 0c54b85f2828128274f319a1eb3ce7f604fe2a53 (diff) | |
| download | linux-2a3a041c4e2c1685e668b280c121a5a40a029a03.tar.gz linux-2a3a041c4e2c1685e668b280c121a5a40a029a03.tar.bz2 linux-2a3a041c4e2c1685e668b280c121a5a40a029a03.zip | |
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.h | 1 |
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 |