Yes, it is.
From: Steve Wise <[email protected]> To: Philip Frey1 <[email protected]> Cc: Andreas Hasler1/Zurich/i...@ibmch, [email protected] Date: 01/14/2009 05:25 PM Subject: Re: [ofa-general] iWARP: Zero STag, OFED 1.3 vs 1.4 Is this with the Chelsio RNIC? Philip Frey1 wrote: > > Hello, > > I recently upgraded from OFED 1.3 to 1.4 and the behaviour of an STag > of zero seems to have changed. > > Before, the following code worked: > > /* create send work request (for synchronization)*/ > sge.addr = 0; > sge.length = 0; > sge.lkey = 0; > > send_wr.wr_id = tx_wr_id++; > send_wr.next = NULL; > send_wr.sg_list = &sge; > send_wr.num_sge = 1; > send_wr.opcode = IBV_WR_SEND; > send_wr.send_flags = 0; > > /* post send synchronization WR */ > ret = ibv_post_send(ctx_conn.qp, &send_wr, &bad_wr); > if (ret) { > msg_Err("RDMA: failed to post send"); > return -1; > } > > but now it results in the following error: > > Jan 13 17:34:46 borus kernel: iwch_ev_dispatch - CQE Err qpid 0xa0 > opcode 3 status 0x1 type 1 wrid.hi 0x0 wrid.lo 0x80000000 > Jan 13 17:34:46 borus kernel: post_qp_event - AE qpid 0xa0 opcode 3 > status 0x1 type 1 wrid.hi 0x0 wrid.lo 0x80000000 > > I wanted to do a zero-length send w/o a memory region to solve the > issue that the MPA initiator must send the first FPDU. > > Question1: Why didn't that result in an error before? > Question2: Is there a way of doing a zero-length operation w/o having > to create a MR? > > Many thanks for you advice, > Philip > ------------------------------------------------------------------------ > > _______________________________________________ > general mailing list > [email protected] > http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general > > To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general _______________________________________________ general mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
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