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authorIlpo Järvinen <ilpo.jarvinen@helsinki.fi>2008-03-11 17:55:27 -0700
committerDavid S. Miller <davem@davemloft.net>2008-03-11 17:55:27 -0700
commit5ea3a7480606cef06321cd85bc5113c72d2c7c68 (patch)
tree202d758d85e60b2a38cd7dd57b41a47d97ebbce8 /fs/proc
parent445815d7ea4f59baf103f28b45f7dd45f21ff75d (diff)
[TCP]: Prevent sending past receiver window with TSO (at last skb)
With TSO it was possible to send past the receiver window when the skb to be sent was the last in the write queue while the receiver window is the limiting factor. One can notice that there's a loophole in the tcp_mss_split_point that lacked a receiver window check for the tcp_write_queue_tail() if also cwnd was smaller than the full skb. Noticed by Thomas Gleixner <tglx@linutronix.de> in form of "Treason uncloaked! Peer ... shrinks window .... Repaired." messages (the peer didn't actually shrink its window as the message suggests, we had just sent something past it without a permission to do so). Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Tested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'fs/proc')
0 files changed, 0 insertions, 0 deletions