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| author | yongari <yongari@FreeBSD.org> | 2009-06-02 04:35:44 +0000 |
|---|---|---|
| committer | yongari <yongari@FreeBSD.org> | 2009-06-02 04:35:44 +0000 |
| commit | 493c3c966072849c324b35b3d2c72f2ddc8648f0 (patch) | |
| tree | f991d243407ef8b8839b7f3ac5085b4291cec66b /usr.sbin/pmcstat/pmcstat.8 | |
| parent | f27a08a589cf7f329010cf7834a9a0143dc7b1b2 (diff) | |
| download | FreeBSD-src-493c3c966072849c324b35b3d2c72f2ddc8648f0.zip FreeBSD-src-493c3c966072849c324b35b3d2c72f2ddc8648f0.tar.gz | |
Add frame parser capability of Yukon FE+ and Yukon Extreme. With
this feature hardware automatically computes TCP/UDP payload
offset. Introduce MSK_FLAG_AUTOTX_CSUM to mark the capability.
Yukon Extreme B0 revision is known to have a silicon for the
feature so disable it. Yukon Extreme B0 still can do Tx checksum
offloading but CPU have to compute TCP/UDP payload offset. To
enable traditional checksum offloading, disable automatic Tx
checksum calculation capability.
Yukon Extreme A0 revision could not use store-and-forward mode for
jumbo frames(silicon bug) so disable Tx checksum offloading for
jumbo frames.
I believe controllers that have MSK_FLAG_AUTOTX_CSUM capability or
new descriptor format do not have Tx checksum offload bug so
disable checksum offloading workaround for for short frames.
Tested by: jhb, Warren Block ( wblock <> wonkity dot com )
Diffstat (limited to 'usr.sbin/pmcstat/pmcstat.8')
0 files changed, 0 insertions, 0 deletions
