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authorEd Cashin <ecashin@coraid.com>2012-12-18 01:03:43 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-18 02:15:24 +0100
commit3a0c40d2d29e476ece583540e4f11276e0f36d5f (patch)
tree6f57de53c253bf588040611c12e5cb9e84326ba6 /.mailmap
parentaoe: provide ATA identify device content to user on request (diff)
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aoe: improve network congestion handling
The aoe driver already had some congestion handling, but it was limited in its ability to cope with the kind of congestion that can arise on more complex networks such as those involving paths through multiple ethernet switches. Some of the lessons from TCP's history of development can be applied to improving the congestion control and avoidance on AoE storage networks. These changes use familar concepts from Van Jacobson's "Congestion Avoidance and Control" paper from '88, without adding significant overhead. This patch depends on an upcoming patch that covers the failover case when AoE commands being retransmitted are transferred from one retransmit queue to another. Another upcoming patch increases the timing accuracy. Signed-off-by: Ed Cashin <ecashin@coraid.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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