Connected mode draft and retransmit implosion

Vivek,

So I have been concerned about the Connected mode draft and I run into a
simple problem here...

Imagine I have a TCP socket running over a 64K RC MTU link.

I transmit the IP packet (all 64K of it)

Infiniband breaks the packet up into a bunch of 2K Infiniband MTU
packets (all 32 of them) - lets say I loose the second packet.

No problem IB will retransmit the packet over the link and it gets to
the other side...

The problem that I want to see - is what happens if the TCP retransmit
timer goes off - causing the whole TCP segment to be retransmitted.

Is there anyway that IPoIB-RC can handle this.  I am assuming the first
pass is "There are no IB link errors".

The second pass will be "IB Link timers are orders of magnitude faster
than TCP timers" (order millisecond rather than order second)

The third (And I hope correct) answer will be "We have done the analysis
and we can show that there is such a low probability of 1 happening,
that 2 will cover all but some rediculously small ammount that the
retransmission problem doesn't happen"

Any input ?

Am I worried over nothing (because of 1 and 2)

Bill