From patchwork Fri Mar 11 17:57:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Jeffery X-Patchwork-Id: 12778499 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DAD38C433FE for ; Fri, 11 Mar 2022 17:57:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350500AbiCKR6w (ORCPT ); Fri, 11 Mar 2022 12:58:52 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48300 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350562AbiCKR6v (ORCPT ); Fri, 11 Mar 2022 12:58:51 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 76F4FA76CA for ; Fri, 11 Mar 2022 09:57:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1647021463; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Nh9bTUIUacOod+DLliFISU6Ql6jfYfcDEklqeiHOHCg=; b=WpXbYT/5CbJdhAiGaFVBM0yulON60fqYK93lqDINEu6lTuA+wRr9ADI7EpIwbPCb7+OL0H 4nZfeJwB50ALYi0v1tragKp+pFJn62uova2EG+xhbG6w+0vreOYeZ6bIRBBsCf1Oib+O3m qjN0ECooTC4LbS1na2ANsOBINjkB3uI= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-48-QmyS2XJYMOawwSrBd2dxkg-1; Fri, 11 Mar 2022 12:57:38 -0500 X-MC-Unique: QmyS2XJYMOawwSrBd2dxkg-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id CDDB71091DA3; Fri, 11 Mar 2022 17:57:37 +0000 (UTC) Received: from gluttony.redhat.com (unknown [10.22.19.22]) by smtp.corp.redhat.com (Postfix) with ESMTP id 325A980685; Fri, 11 Mar 2022 17:57:37 +0000 (UTC) From: David Jeffery To: linux-rdma@vger.kernel.org Cc: target-devel@vger.kernel.org, Sagi Grimberg , Max Gurtovoy , Laurence Oberman , David Jeffery Subject: [PATCH 1/2] isert: support for unsolicited NOPIN with no response. Date: Fri, 11 Mar 2022 12:57:12 -0500 Message-Id: <20220311175713.2344960-2-djeffery@redhat.com> In-Reply-To: <20220311175713.2344960-1-djeffery@redhat.com> References: <20220311175713.2344960-1-djeffery@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org The isert module has only supported sending a NOPIN as a response to a NOPOUT. In order to be able to use an unsolicited NOPIN to inform the initiator of max_cmd_sn changes, isert needs to be able to send a NOPIN as needed. Signed-off-by: David Jeffery Tested-by: Laurence Oberman --- drivers/infiniband/ulp/isert/ib_isert.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c index 636d590765f9..b8390ad762eb 100644 --- a/drivers/infiniband/ulp/isert/ib_isert.c +++ b/drivers/infiniband/ulp/isert/ib_isert.c @@ -1469,6 +1469,7 @@ isert_put_cmd(struct isert_cmd *isert_cmd, bool comp_err) break; case ISCSI_OP_REJECT: case ISCSI_OP_NOOP_OUT: + case ISCSI_OP_NOOP_IN: case ISCSI_OP_TEXT: hdr = (struct iscsi_text_rsp *)&isert_cmd->tx_desc.iscsi_header; /* If the continue bit is on, keep the command alive */ @@ -1858,7 +1859,14 @@ isert_put_nopin(struct iscsi_cmd *cmd, struct iscsi_conn *conn, isert_dbg("conn %p Posting NOPIN Response\n", isert_conn); - return isert_post_response(isert_conn, isert_cmd); + if (nopout_response) + return isert_post_response(isert_conn, isert_cmd); + + /* pointer init since didn't go through isert_allocate_cmd */ + isert_cmd->conn = isert_conn; + isert_cmd->iscsi_cmd = cmd; + + return ib_post_send(isert_conn->qp, send_wr, NULL); } static int @@ -2159,6 +2167,7 @@ isert_immediate_queue(struct iscsi_conn *conn, struct iscsi_cmd *cmd, int state) spin_unlock_bh(&conn->cmd_lock); isert_put_cmd(isert_cmd, true); break; + case ISTATE_SEND_NOPIN_NO_RESPONSE: case ISTATE_SEND_NOPIN_WANT_RESPONSE: ret = isert_put_nopin(cmd, conn, false); break;