From patchwork Tue Aug 17 09:14:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 499367 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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, 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 D7931C432BE for ; Tue, 17 Aug 2021 09:17:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BF642600CC for ; Tue, 17 Aug 2021 09:17:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239583AbhHQJRd (ORCPT ); Tue, 17 Aug 2021 05:17:33 -0400 Received: from smtp-out1.suse.de ([195.135.220.28]:33310 "EHLO smtp-out1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239300AbhHQJRR (ORCPT ); Tue, 17 Aug 2021 05:17:17 -0400 Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out1.suse.de (Postfix) with ESMTP id 3C2CD21D40; Tue, 17 Aug 2021 09:16:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1629191802; h=from:from:reply-to: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=i/YvAzY2BXyJ6hJ0PjaBkQChsnfEPSrPNrASZHuf2K8=; b=xYbrcoEBeASRP5fx3YdG4+1wE30m1mjYdAXNT1x3c2WacGnfP56i8Pc4DeJIOExK1pH+rO s7ECAq1QgeV0NXOwysqvCyuPk4E0I7LdV/9FYP5xc+XNUO84qW/ZCQimBgFtp806feddw5 6RjYKZhIVvfUHtyfuYAn6U3gLeBnQE8= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1629191802; h=from:from:reply-to: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=i/YvAzY2BXyJ6hJ0PjaBkQChsnfEPSrPNrASZHuf2K8=; b=mJBY4QDWMzhxxes8+Oy4/86GAEA3OYqPuNkjT7wM1MHCvFcwvYfq4otU006WA3LgPTqRKe u9bBErURL5cDlXCQ== Received: from adalid.arch.suse.de (adalid.arch.suse.de [10.161.8.13]) by relay2.suse.de (Postfix) with ESMTP id 35946A3BA7; Tue, 17 Aug 2021 09:16:42 +0000 (UTC) Received: by adalid.arch.suse.de (Postfix, from userid 16045) id 3250E518CE8D; Tue, 17 Aug 2021 11:16:42 +0200 (CEST) From: Hannes Reinecke To: "Martin K. Petersen" Cc: Christoph Hellwig , James Bottomley , linux-scsi@vger.kernel.org, Hannes Reinecke , Hannes Reinecke , Saurav Kashyap Subject: [PATCH 23/51] bnx2fc: Do not rely on a scsi command when issueing lun or target reset Date: Tue, 17 Aug 2021 11:14:28 +0200 Message-Id: <20210817091456.73342-24-hare@suse.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210817091456.73342-1-hare@suse.de> References: <20210817091456.73342-1-hare@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org When a LUN or target reset is issued we should not rely on a scsi command to be present; this isn't very reliable and is going away with the next patch anyway. Signed-off-by: Hannes Reinecke Cc: Saurav Kashyap --- drivers/scsi/bnx2fc/bnx2fc.h | 1 + drivers/scsi/bnx2fc/bnx2fc_hwi.c | 14 +++-- drivers/scsi/bnx2fc/bnx2fc_io.c | 91 +++++++++++++++----------------- 3 files changed, 53 insertions(+), 53 deletions(-) diff --git a/drivers/scsi/bnx2fc/bnx2fc.h b/drivers/scsi/bnx2fc/bnx2fc.h index b4cea8b06ea1..4e0434f70092 100644 --- a/drivers/scsi/bnx2fc/bnx2fc.h +++ b/drivers/scsi/bnx2fc/bnx2fc.h @@ -386,6 +386,7 @@ struct bnx2fc_rport { }; struct bnx2fc_mp_req { + u64 tm_lun; u8 tm_flags; u32 req_len; diff --git a/drivers/scsi/bnx2fc/bnx2fc_hwi.c b/drivers/scsi/bnx2fc/bnx2fc_hwi.c index 0103f811cc25..a08e89dad29d 100644 --- a/drivers/scsi/bnx2fc/bnx2fc_hwi.c +++ b/drivers/scsi/bnx2fc/bnx2fc_hwi.c @@ -1709,7 +1709,8 @@ void bnx2fc_init_task(struct bnx2fc_cmd *io_req, struct fcoe_cached_sge_ctx *cached_sge; struct fcoe_ext_mul_sges_ctx *sgl; int dev_type = tgt->dev_type; - u64 *fcp_cmnd; + struct fcp_cmnd *fcp_cmnd; + u64 *raw_fcp_cmnd; u64 tmp_fcp_cmnd[4]; u32 context_id; int cnt, i; @@ -1778,16 +1779,19 @@ void bnx2fc_init_task(struct bnx2fc_cmd *io_req, task->txwr_rxrd.union_ctx.tx_seq.ctx.seq_cnt = 1; /* Fill FCP_CMND IU */ - fcp_cmnd = (u64 *) + fcp_cmnd = (struct fcp_cmnd *)&tmp_fcp_cmnd; + bnx2fc_build_fcp_cmnd(io_req, fcp_cmnd); + int_to_scsilun(sc_cmd->device->lun, &fcp_cmnd->fc_lun); + memcpy(fcp_cmnd->fc_cdb, sc_cmd->cmnd, sc_cmd->cmd_len); + raw_fcp_cmnd = (u64 *) task->txwr_rxrd.union_ctx.fcp_cmd.opaque; - bnx2fc_build_fcp_cmnd(io_req, (struct fcp_cmnd *)&tmp_fcp_cmnd); /* swap fcp_cmnd */ cnt = sizeof(struct fcp_cmnd) / sizeof(u64); for (i = 0; i < cnt; i++) { - *fcp_cmnd = cpu_to_be64(tmp_fcp_cmnd[i]); - fcp_cmnd++; + *raw_fcp_cmnd = cpu_to_be64(tmp_fcp_cmnd[i]); + raw_fcp_cmnd++; } /* Rx Write Tx Read */ diff --git a/drivers/scsi/bnx2fc/bnx2fc_io.c b/drivers/scsi/bnx2fc/bnx2fc_io.c index f2996a9b2f63..28e858325d38 100644 --- a/drivers/scsi/bnx2fc/bnx2fc_io.c +++ b/drivers/scsi/bnx2fc/bnx2fc_io.c @@ -658,10 +658,9 @@ int bnx2fc_init_mp_req(struct bnx2fc_cmd *io_req) return SUCCESS; } -static int bnx2fc_initiate_tmf(struct scsi_cmnd *sc_cmd, u8 tm_flags) +static int bnx2fc_initiate_tmf(struct fc_lport *lport, struct fc_rport *rport, + u64 tm_lun, u8 tm_flags) { - struct fc_lport *lport; - struct fc_rport *rport; struct fc_rport_libfc_priv *rp; struct fcoe_port *port; struct bnx2fc_interface *interface; @@ -670,7 +669,6 @@ static int bnx2fc_initiate_tmf(struct scsi_cmnd *sc_cmd, u8 tm_flags) struct bnx2fc_mp_req *tm_req; struct fcoe_task_ctx_entry *task; struct fcoe_task_ctx_entry *task_page; - struct Scsi_Host *host = sc_cmd->device->host; struct fc_frame_header *fc_hdr; struct fcp_cmnd *fcp_cmnd; int task_idx, index; @@ -679,8 +677,6 @@ static int bnx2fc_initiate_tmf(struct scsi_cmnd *sc_cmd, u8 tm_flags) u32 sid, did; unsigned long start = jiffies; - lport = shost_priv(host); - rport = starget_to_rport(scsi_target(sc_cmd->device)); port = lport_priv(lport); interface = port->priv; @@ -691,7 +687,7 @@ static int bnx2fc_initiate_tmf(struct scsi_cmnd *sc_cmd, u8 tm_flags) } rp = rport->dd_data; - rc = fc_block_scsi_eh(sc_cmd); + rc = fc_block_rport(rport); if (rc) return rc; @@ -720,7 +716,7 @@ static int bnx2fc_initiate_tmf(struct scsi_cmnd *sc_cmd, u8 tm_flags) goto retry_tmf; } /* Initialize rest of io_req fields */ - io_req->sc_cmd = sc_cmd; + io_req->sc_cmd = NULL; io_req->port = port; io_req->tgt = tgt; @@ -738,11 +734,13 @@ static int bnx2fc_initiate_tmf(struct scsi_cmnd *sc_cmd, u8 tm_flags) /* Set TM flags */ io_req->io_req_flags = 0; tm_req->tm_flags = tm_flags; + tm_req->tm_lun = tm_lun; /* Fill FCP_CMND */ bnx2fc_build_fcp_cmnd(io_req, (struct fcp_cmnd *)tm_req->req_buf); fcp_cmnd = (struct fcp_cmnd *)tm_req->req_buf; - memset(fcp_cmnd->fc_cdb, 0, sc_cmd->cmd_len); + int_to_scsilun(tm_lun, &fcp_cmnd->fc_lun); + memset(fcp_cmnd->fc_cdb, 0, BNX2FC_MAX_CMD_LEN); fcp_cmnd->fc_dl = 0; /* Fill FC header */ @@ -765,8 +763,6 @@ static int bnx2fc_initiate_tmf(struct scsi_cmnd *sc_cmd, u8 tm_flags) task = &(task_page[index]); bnx2fc_init_mp_task(io_req, task); - sc_cmd->SCp.ptr = (char *)io_req; - /* Obtain free SQ entry */ spin_lock_bh(&tgt->tgt_lock); bnx2fc_add_2_sq(tgt, xid); @@ -1064,7 +1060,10 @@ int bnx2fc_initiate_cleanup(struct bnx2fc_cmd *io_req) */ int bnx2fc_eh_target_reset(struct scsi_cmnd *sc_cmd) { - return bnx2fc_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET); + struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); + struct fc_lport *lport = shost_priv(rport_to_shost(rport)); + + return bnx2fc_initiate_tmf(lport, rport, 0, FCP_TMF_TGT_RESET); } /** @@ -1077,7 +1076,11 @@ int bnx2fc_eh_target_reset(struct scsi_cmnd *sc_cmd) */ int bnx2fc_eh_device_reset(struct scsi_cmnd *sc_cmd) { - return bnx2fc_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET); + struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); + struct fc_lport *lport = shost_priv(rport_to_shost(rport)); + + return bnx2fc_initiate_tmf(lport, rport, sc_cmd->device->lun, + FCP_TMF_LUN_RESET); } static int bnx2fc_abts_cleanup(struct bnx2fc_cmd *io_req) @@ -1452,10 +1455,9 @@ void bnx2fc_process_abts_compl(struct bnx2fc_cmd *io_req, static void bnx2fc_lun_reset_cmpl(struct bnx2fc_cmd *io_req) { - struct scsi_cmnd *sc_cmd = io_req->sc_cmd; struct bnx2fc_rport *tgt = io_req->tgt; struct bnx2fc_cmd *cmd, *tmp; - u64 tm_lun = sc_cmd->device->lun; + struct bnx2fc_mp_req *tm_req = &io_req->mp_req; u64 lun; int rc = 0; @@ -1467,8 +1469,10 @@ static void bnx2fc_lun_reset_cmpl(struct bnx2fc_cmd *io_req) */ list_for_each_entry_safe(cmd, tmp, &tgt->active_cmd_queue, link) { BNX2FC_TGT_DBG(tgt, "LUN RST cmpl: scan for pending IOs\n"); + if (!cmd->sc_cmd) + continue; lun = cmd->sc_cmd->device->lun; - if (lun == tm_lun) { + if (lun == tm_req->tm_lun) { /* Initiate ABTS on this cmd */ if (!test_and_set_bit(BNX2FC_FLAG_ISSUE_ABTS, &cmd->req_flags)) { @@ -1572,32 +1576,32 @@ void bnx2fc_process_tm_compl(struct bnx2fc_cmd *io_req, printk(KERN_ERR PFX "tmf's fc_hdr r_ctl = 0x%x\n", fc_hdr->fh_r_ctl); } - if (!sc_cmd->SCp.ptr) { - printk(KERN_ERR PFX "tm_compl: SCp.ptr is NULL\n"); - return; - } - switch (io_req->fcp_status) { - case FC_GOOD: - if (io_req->cdb_status == 0) { - /* Good IO completion */ - sc_cmd->result = DID_OK << 16; - } else { - /* Transport status is good, SCSI status not good */ - sc_cmd->result = (DID_OK << 16) | io_req->cdb_status; + if (sc_cmd && sc_cmd->SCp.ptr) { + switch (io_req->fcp_status) { + case FC_GOOD: + if (io_req->cdb_status == 0) { + /* Good IO completion */ + sc_cmd->result = DID_OK << 16; + } else { + /* Transport status is good, SCSI status not good */ + sc_cmd->result = (DID_OK << 16) | io_req->cdb_status; + } + if (io_req->fcp_resid) + scsi_set_resid(sc_cmd, io_req->fcp_resid); + break; + + default: + BNX2FC_IO_DBG(io_req, "process_tm_compl: fcp_status = %d\n", + io_req->fcp_status); + break; } - if (io_req->fcp_resid) - scsi_set_resid(sc_cmd, io_req->fcp_resid); - break; - default: - BNX2FC_IO_DBG(io_req, "process_tm_compl: fcp_status = %d\n", - io_req->fcp_status); - break; - } - - sc_cmd = io_req->sc_cmd; - io_req->sc_cmd = NULL; + sc_cmd = io_req->sc_cmd; + io_req->sc_cmd = NULL; + sc_cmd->SCp.ptr = NULL; + sc_cmd->scsi_done(sc_cmd); + } /* check if the io_req exists in tgt's tmf_q */ if (io_req->on_tmf_queue) { @@ -1609,9 +1613,6 @@ void bnx2fc_process_tm_compl(struct bnx2fc_cmd *io_req, return; } - sc_cmd->SCp.ptr = NULL; - sc_cmd->scsi_done(sc_cmd); - kref_put(&io_req->refcount, bnx2fc_cmd_release); if (io_req->wait_for_abts_comp) { BNX2FC_IO_DBG(io_req, "tm_compl - wake up the waiter\n"); @@ -1740,15 +1741,9 @@ static void bnx2fc_unmap_sg_list(struct bnx2fc_cmd *io_req) void bnx2fc_build_fcp_cmnd(struct bnx2fc_cmd *io_req, struct fcp_cmnd *fcp_cmnd) { - struct scsi_cmnd *sc_cmd = io_req->sc_cmd; - memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd)); - int_to_scsilun(sc_cmd->device->lun, &fcp_cmnd->fc_lun); - fcp_cmnd->fc_dl = htonl(io_req->data_xfer_len); - memcpy(fcp_cmnd->fc_cdb, sc_cmd->cmnd, sc_cmd->cmd_len); - fcp_cmnd->fc_cmdref = 0; fcp_cmnd->fc_pri_ta = 0; fcp_cmnd->fc_tm_flags = io_req->mp_req.tm_flags;