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RDMA/cxgb4: Add support for MPAv2 Enhanced RDMA Negotiation

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This patch adds support for Enhanced RDMA Connection Establishment
(draft-ietf-storm-mpa-peer-connect-06), aka MPAv2.  Details of draft
can be obtained from:
<http://www.ietf.org/id/draft-ietf-storm-mpa-peer-connect-06.txt>

The patch updates the following functions for initiator perspective:
 - send_mpa_request
 - process_mpa_reply
 - post_terminate for TERM error codes
 - destroy_qp for TERM related change
 - adds layer/etype/ecode to c4iw_qp_attrs for sending with TERM
 - peer_abort for retrying connection attempt with MPA_v1 message
 - added c4iw_reconnect function

The patch updates the following functions for responder perspective:
 - process_mpa_request
 - send_mpa_reply
 - c4iw_accept_cr
 - passes ird/ord to upper layers

Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Kumar Sanghvi 2011-09-25 20:17:44 +05:30 • committed by Roland Dreier
commit d2fe99e86b
3 changed files with 466 additions and 39 deletions
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