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2007年8月31日
Linux Kernel2.6.22.6がきたよっと >>Linux
Linux Kernel2.6.22.6がきました。
セキュリティ関連はなさそうです。
が、TCPやNET関連でいくつかあるのが気にはなりますねえ。
その1個。
TCP: Fix TCP handling of SACK in bidirectional flows.
It's possible that new SACK blocks that should trigger new LOST
markings arrive with new data (which previously made is_dupack
false). In addition, I think this fixes a case where we get
a cumulative ACK with enough SACK blocks to trigger the fast
recovery (is_dupack would be false there too).
I'm not completely pleased with this solution because readability
of the code is somewhat questionable as 'is_dupack' in SACK case
is no longer about dupacks only but would mean something like
'lost_marker_work_todo' too... But because of Eifel stuff done
in CA_Recovery, the FLAG_DATA_SACKED check cannot be placed to
the if statement which seems attractive solution. Nevertheless,
I didn't like adding another variable just for that either... :-)
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