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IB/mad: Add final OPA MAD processing

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For devices which support OPA MADs

   1) Use previously defined SMP support functions.

   2) Pass correct base version to ib_create_send_mad when processing OPA MADs.

   3) Process out_mad_key_index returned by agents for a response.  This is
      necessary because OPA SMP packets must carry a valid pkey.

   4) Carry the correct segment size (OPA vs IBTA) of RMPP messages within
      ib_mad_recv_wc.

   5) Handle variable length OPA MADs by:

        * Adjusting the 'fake' WC for locally routed SMP's to represent the
          proper incoming byte_len
        * out_mad_size is used from the local HCA agents
                1) when sending agent responses on the wire
                2) when passing responses through the local_completions
		   function

	NOTE: wc.byte_len includes the GRH length and therefore is different
	      from the in_mad_size specified to the local HCA agents.
	      out_mad_size should _not_ include the GRH length as it is added

Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Ira Weiny
2015-06-10 16:16:48 -04:00
committed by Doug Ledford
parent f28990bc89
commit 8e4349d13f
7 changed files with 238 additions and 43 deletions
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8
include/rdma/ib_mad.h
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@@ -199,6 +199,12 @@ struct ib_rmpp_mad {
u8 data[IB_MGMT_RMPP_DATA];
};
struct opa_rmpp_mad {
struct ib_mad_hdr mad_hdr;
struct ib_rmpp_hdr rmpp_hdr;
u8 data[OPA_MGMT_RMPP_DATA];
};
struct ib_sa_mad {
struct ib_mad_hdr mad_hdr;
struct ib_rmpp_hdr rmpp_hdr;
@@ -429,6 +435,7 @@ struct ib_mad_recv_buf {
* @recv_buf: Specifies the location of the received data buffer(s).
* @rmpp_list: Specifies a list of RMPP reassembled received MAD buffers.
* @mad_len: The length of the received MAD, without duplicated headers.
* @mad_seg_size: The size of individual MAD segments
*
* For received response, the wr_id contains a pointer to the ib_mad_send_buf
* for the corresponding send request.
@@ -438,6 +445,7 @@ struct ib_mad_recv_wc {
struct ib_mad_recv_buf recv_buf;
struct list_head rmpp_list;
int mad_len;
size_t mad_seg_size;
};
/**