From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 099BDC43381 for ; Mon, 25 Feb 2019 21:23:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B93BA217F4 for ; Mon, 25 Feb 2019 21:23:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1551129798; bh=uwnGtx6h+pbELg08sbSLh1ePoneRjftDOdGMOOXfh20=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=VhJpVP9qAH6kUuxQgQNEaatqD7alhKOo509j/ndKlzOU6ca5KUKtYraVBRnNlilEZ Du5nswVaJ/8qMyAbC4Mzh1r9dSFwk31DZUSMcq2rDbFmaH5slRoPiByj2kQPUAg7Yb xp1jdLa9HxKHkO5wRi1NOjMprySYNMLbsoAmq9iA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731071AbfBYVXR (ORCPT ); Mon, 25 Feb 2019 16:23:17 -0500 Received: from mail.kernel.org ([198.145.29.99]:57680 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730028AbfBYVXO (ORCPT ); Mon, 25 Feb 2019 16:23:14 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A65EE217F4; Mon, 25 Feb 2019 21:23:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1551129793; bh=uwnGtx6h+pbELg08sbSLh1ePoneRjftDOdGMOOXfh20=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LuVKSjLVWgUG+hmKDpliOer5yCzWd4d1A4aTHDAlftD0mY1MyGyOqVGpNo0t94VWR qlMLrfFgb2M14Rn4n9NPceX9XIRdmKpeIU6tKrsTuLkypPXumyUwYWsTDYQqx2iJxY MmE0LcdeQra6TSSHaKFwiRp7Ptniq4mvfGVFxzL0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Varun Prakash , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 4.19 070/152] scsi: cxgb4i: add wait_for_completion() Date: Mon, 25 Feb 2019 22:11:02 +0100 Message-Id: <20190225195048.098775762@linuxfoundation.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190225195043.645958524@linuxfoundation.org> References: <20190225195043.645958524@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit 9e8f1c79831424d30c0e3df068be7f4a244157c9 ] In case of ->set_param() and ->bind_conn() cxgb4i driver does not wait for cmd completion, this can create race conditions, to avoid this add wait_for_completion(). Signed-off-by: Varun Prakash Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/cxgbi/cxgb3i/cxgb3i.c | 9 ++++----- drivers/scsi/cxgbi/cxgb4i/cxgb4i.c | 28 ++++++++++++++++++++-------- drivers/scsi/cxgbi/libcxgbi.c | 7 ++++--- drivers/scsi/cxgbi/libcxgbi.h | 5 +++-- 4 files changed, 31 insertions(+), 18 deletions(-) diff --git a/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c b/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c index bf07735275a49..0fc382cb977bf 100644 --- a/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c +++ b/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c @@ -1144,7 +1144,7 @@ static void ddp_clear_map(struct cxgbi_device *cdev, struct cxgbi_ppm *ppm, } static int ddp_setup_conn_pgidx(struct cxgbi_sock *csk, - unsigned int tid, int pg_idx, bool reply) + unsigned int tid, int pg_idx) { struct sk_buff *skb = alloc_wr(sizeof(struct cpl_set_tcb_field), 0, GFP_KERNEL); @@ -1160,7 +1160,7 @@ static int ddp_setup_conn_pgidx(struct cxgbi_sock *csk, req = (struct cpl_set_tcb_field *)skb->head; req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, tid)); - req->reply = V_NO_REPLY(reply ? 0 : 1); + req->reply = V_NO_REPLY(1); req->cpu_idx = 0; req->word = htons(31); req->mask = cpu_to_be64(0xF0000000); @@ -1177,11 +1177,10 @@ static int ddp_setup_conn_pgidx(struct cxgbi_sock *csk, * @tid: connection id * @hcrc: header digest enabled * @dcrc: data digest enabled - * @reply: request reply from h/w * set up the iscsi digest settings for a connection identified by tid */ static int ddp_setup_conn_digest(struct cxgbi_sock *csk, unsigned int tid, - int hcrc, int dcrc, int reply) + int hcrc, int dcrc) { struct sk_buff *skb = alloc_wr(sizeof(struct cpl_set_tcb_field), 0, GFP_KERNEL); @@ -1197,7 +1196,7 @@ static int ddp_setup_conn_digest(struct cxgbi_sock *csk, unsigned int tid, req = (struct cpl_set_tcb_field *)skb->head; req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, tid)); - req->reply = V_NO_REPLY(reply ? 0 : 1); + req->reply = V_NO_REPLY(1); req->cpu_idx = 0; req->word = htons(31); req->mask = cpu_to_be64(0x0F000000); diff --git a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c index 211da1d5a8699..689d6c813a50d 100644 --- a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c +++ b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c @@ -1517,16 +1517,22 @@ static void do_set_tcb_rpl(struct cxgbi_device *cdev, struct sk_buff *skb) struct cxgbi_sock *csk; csk = lookup_tid(t, tid); - if (!csk) + if (!csk) { pr_err("can't find conn. for tid %u.\n", tid); + return; + } log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, "csk 0x%p,%u,%lx,%u, status 0x%x.\n", csk, csk->state, csk->flags, csk->tid, rpl->status); - if (rpl->status != CPL_ERR_NONE) + if (rpl->status != CPL_ERR_NONE) { pr_err("csk 0x%p,%u, SET_TCB_RPL status %u.\n", csk, tid, rpl->status); + csk->err = -EINVAL; + } + + complete(&csk->cmpl); __kfree_skb(skb); } @@ -1903,7 +1909,7 @@ static int ddp_set_map(struct cxgbi_ppm *ppm, struct cxgbi_sock *csk, } static int ddp_setup_conn_pgidx(struct cxgbi_sock *csk, unsigned int tid, - int pg_idx, bool reply) + int pg_idx) { struct sk_buff *skb; struct cpl_set_tcb_field *req; @@ -1919,7 +1925,7 @@ static int ddp_setup_conn_pgidx(struct cxgbi_sock *csk, unsigned int tid, req = (struct cpl_set_tcb_field *)skb->head; INIT_TP_WR(req, csk->tid); OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, csk->tid)); - req->reply_ctrl = htons(NO_REPLY_V(reply) | QUEUENO_V(csk->rss_qid)); + req->reply_ctrl = htons(NO_REPLY_V(0) | QUEUENO_V(csk->rss_qid)); req->word_cookie = htons(0); req->mask = cpu_to_be64(0x3 << 8); req->val = cpu_to_be64(pg_idx << 8); @@ -1928,12 +1934,15 @@ static int ddp_setup_conn_pgidx(struct cxgbi_sock *csk, unsigned int tid, log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, "csk 0x%p, tid 0x%x, pg_idx %u.\n", csk, csk->tid, pg_idx); + reinit_completion(&csk->cmpl); cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); - return 0; + wait_for_completion(&csk->cmpl); + + return csk->err; } static int ddp_setup_conn_digest(struct cxgbi_sock *csk, unsigned int tid, - int hcrc, int dcrc, int reply) + int hcrc, int dcrc) { struct sk_buff *skb; struct cpl_set_tcb_field *req; @@ -1951,7 +1960,7 @@ static int ddp_setup_conn_digest(struct cxgbi_sock *csk, unsigned int tid, req = (struct cpl_set_tcb_field *)skb->head; INIT_TP_WR(req, tid); OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, tid)); - req->reply_ctrl = htons(NO_REPLY_V(reply) | QUEUENO_V(csk->rss_qid)); + req->reply_ctrl = htons(NO_REPLY_V(0) | QUEUENO_V(csk->rss_qid)); req->word_cookie = htons(0); req->mask = cpu_to_be64(0x3 << 4); req->val = cpu_to_be64(((hcrc ? ULP_CRC_HEADER : 0) | @@ -1961,8 +1970,11 @@ static int ddp_setup_conn_digest(struct cxgbi_sock *csk, unsigned int tid, log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK, "csk 0x%p, tid 0x%x, crc %d,%d.\n", csk, csk->tid, hcrc, dcrc); + reinit_completion(&csk->cmpl); cxgb4_ofld_send(csk->cdev->ports[csk->port_id], skb); - return 0; + wait_for_completion(&csk->cmpl); + + return csk->err; } static struct cxgbi_ppm *cdev2ppm(struct cxgbi_device *cdev) diff --git a/drivers/scsi/cxgbi/libcxgbi.c b/drivers/scsi/cxgbi/libcxgbi.c index 3f3af5e74a07d..f2c561ca731a3 100644 --- a/drivers/scsi/cxgbi/libcxgbi.c +++ b/drivers/scsi/cxgbi/libcxgbi.c @@ -573,6 +573,7 @@ static struct cxgbi_sock *cxgbi_sock_create(struct cxgbi_device *cdev) skb_queue_head_init(&csk->receive_queue); skb_queue_head_init(&csk->write_queue); timer_setup(&csk->retry_timer, NULL, 0); + init_completion(&csk->cmpl); rwlock_init(&csk->callback_lock); csk->cdev = cdev; csk->flags = 0; @@ -2252,14 +2253,14 @@ int cxgbi_set_conn_param(struct iscsi_cls_conn *cls_conn, if (!err && conn->hdrdgst_en) err = csk->cdev->csk_ddp_setup_digest(csk, csk->tid, conn->hdrdgst_en, - conn->datadgst_en, 0); + conn->datadgst_en); break; case ISCSI_PARAM_DATADGST_EN: err = iscsi_set_param(cls_conn, param, buf, buflen); if (!err && conn->datadgst_en) err = csk->cdev->csk_ddp_setup_digest(csk, csk->tid, conn->hdrdgst_en, - conn->datadgst_en, 0); + conn->datadgst_en); break; case ISCSI_PARAM_MAX_R2T: return iscsi_tcp_set_max_r2t(conn, buf); @@ -2385,7 +2386,7 @@ int cxgbi_bind_conn(struct iscsi_cls_session *cls_session, ppm = csk->cdev->cdev2ppm(csk->cdev); err = csk->cdev->csk_ddp_setup_pgidx(csk, csk->tid, - ppm->tformat.pgsz_idx_dflt, 0); + ppm->tformat.pgsz_idx_dflt); if (err < 0) return err; diff --git a/drivers/scsi/cxgbi/libcxgbi.h b/drivers/scsi/cxgbi/libcxgbi.h index dcb190e753434..3bf7414a75e5e 100644 --- a/drivers/scsi/cxgbi/libcxgbi.h +++ b/drivers/scsi/cxgbi/libcxgbi.h @@ -146,6 +146,7 @@ struct cxgbi_sock { struct sk_buff_head receive_queue; struct sk_buff_head write_queue; struct timer_list retry_timer; + struct completion cmpl; int err; rwlock_t callback_lock; void *user_data; @@ -487,9 +488,9 @@ struct cxgbi_device { struct cxgbi_ppm *, struct cxgbi_task_tag_info *); int (*csk_ddp_setup_digest)(struct cxgbi_sock *, - unsigned int, int, int, int); + unsigned int, int, int); int (*csk_ddp_setup_pgidx)(struct cxgbi_sock *, - unsigned int, int, bool); + unsigned int, int); void (*csk_release_offload_resources)(struct cxgbi_sock *); int (*csk_rx_pdu_ready)(struct cxgbi_sock *, struct sk_buff *); -- 2.19.1