[openib-general] [PATCH] ib_cm: randomize starting local comm IDs

[Or Gerlitz]

On 8/22/06, Sean Hefty <sean.hefty at intel.com> wrote:
> Randomize the starting local comm ID to avoid getting a rejected connection
> due to a stale connection after a system reboot or reloading of the ib_cm.

Hi Sean,

I have tested the patch against an iser target based on our Gen1 CM -
it works as expected.

So the CM at the target side rejects the first REQ after the client
reboot with STALE reason (and deliveres a disconnect event to the
ULP). The second REQ is processed fine and a new connection is
established.

Without the patch, since the REQ had <local_id,qpn> as this of an
existing connection, it was just silently dropped and a target reboot
was a must to let the initiator reconnect !

Or.