From mboxrd@z Thu Jan 1 00:00:00 1970 From: Varun Prakash Subject: [PATCH v3 06/13] iscsi-target: add void (*iscsit_get_r2t_ttt)() Date: Wed, 20 Apr 2016 00:00:13 +0530 Message-ID: References: Return-path: Received: from stargate.chelsio.com ([12.32.117.8]:64552 "EHLO stargate3.asicdesigners.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932248AbcDSSbD (ORCPT ); Tue, 19 Apr 2016 14:31:03 -0400 In-Reply-To: In-Reply-To: References: Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: target-devel@vger.kernel.org, linux-scsi@vger.kernel.org Cc: nab@linux-iscsi.org, swise@opengridcomputing.com, kxie@chelsio.com, indranil@chelsio.com, varun@chelsio.com Add void (*iscsit_get_r2t_ttt)() to struct iscsit_transport, iscsi-target uses this callback to get r2t->targ_xfer_tag. cxgbit.ko needs this callback for Direct Data Placement of Data Out pdus, adapter uses ttt in Data Out pdus for placing data directly in to the host buffers. Signed-off-by: Varun Prakash --- drivers/target/iscsi/iscsi_target.c | 5 ++++- include/target/iscsi/iscsi_transport.h | 2 ++ 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c index a827b7a..a28eb87 100644 --- a/drivers/target/iscsi/iscsi_target.c +++ b/drivers/target/iscsi/iscsi_target.c @@ -3039,7 +3039,10 @@ static int iscsit_send_r2t( int_to_scsilun(cmd->se_cmd.orig_fe_lun, (struct scsi_lun *)&hdr->lun); hdr->itt = cmd->init_task_tag; - r2t->targ_xfer_tag = session_get_next_ttt(conn->sess); + if (conn->conn_transport->iscsit_get_r2t_ttt) + conn->conn_transport->iscsit_get_r2t_ttt(conn, cmd, r2t); + else + r2t->targ_xfer_tag = session_get_next_ttt(conn->sess); hdr->ttt = cpu_to_be32(r2t->targ_xfer_tag); hdr->statsn = cpu_to_be32(conn->stat_sn); hdr->exp_cmdsn = cpu_to_be32(conn->sess->exp_cmd_sn); diff --git a/include/target/iscsi/iscsi_transport.h b/include/target/iscsi/iscsi_transport.h index 46aa219..32704b2 100644 --- a/include/target/iscsi/iscsi_transport.h +++ b/include/target/iscsi/iscsi_transport.h @@ -27,6 +27,8 @@ struct iscsit_transport { void (*iscsit_release_cmd)(struct iscsi_conn *, struct iscsi_cmd *); void (*iscsit_get_rx_pdu)(struct iscsi_conn *); int (*iscsit_validate_params)(struct iscsi_conn *); + void (*iscsit_get_r2t_ttt)(struct iscsi_conn *, struct iscsi_cmd *, + struct iscsi_r2t *); enum target_prot_op (*iscsit_get_sup_prot_ops)(struct iscsi_conn *); }; -- 2.0.2