From patchwork Tue Sep 29 10:47:36 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 7285231 Return-Path: X-Original-To: patchwork-linux-scsi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 0F0BD9F444 for ; Tue, 29 Sep 2015 10:48:52 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 1D761206CC for ; Tue, 29 Sep 2015 10:48:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E72B5206D8 for ; Tue, 29 Sep 2015 10:48:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934710AbbI2Ksq (ORCPT ); Tue, 29 Sep 2015 06:48:46 -0400 Received: from mx2.suse.de ([195.135.220.15]:42060 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934716AbbI2KsH (ORCPT ); Tue, 29 Sep 2015 06:48:07 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 30C2A7503D; Tue, 29 Sep 2015 10:47:49 +0000 (UTC) From: Hannes Reinecke To: James Bottomley Cc: linux-scsi@vger.kernel.org, Christoph Hellwig , Bart van Assche , Ewan Milne , "Martin K. Petersen" , Hannes Reinecke Subject: [PATCH 34/36] scsi_dh_alua: use common definitions for ALUA state Date: Tue, 29 Sep 2015 12:47:36 +0200 Message-Id: <1443523658-87622-35-git-send-email-hare@suse.de> X-Mailer: git-send-email 1.8.5.6 In-Reply-To: <1443523658-87622-1-git-send-email-hare@suse.de> References: <1443523658-87622-1-git-send-email-hare@suse.de> Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP scsi_proto.h now contains definitions for the ALUA state, so we don't have to carry them in the device handler. Signed-off-by: Hannes Reinecke --- drivers/scsi/device_handler/scsi_dh_alua.c | 62 +++++++++++++----------------- 1 file changed, 27 insertions(+), 35 deletions(-) diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c index 4ed889b..d9c7b42 100644 --- a/drivers/scsi/device_handler/scsi_dh_alua.c +++ b/drivers/scsi/device_handler/scsi_dh_alua.c @@ -31,14 +31,6 @@ #define ALUA_DH_NAME "alua" #define ALUA_DH_VER "1.3" -#define TPGS_STATE_OPTIMIZED 0x0 -#define TPGS_STATE_NONOPTIMIZED 0x1 -#define TPGS_STATE_STANDBY 0x2 -#define TPGS_STATE_UNAVAILABLE 0x3 -#define TPGS_STATE_LBA_DEPENDENT 0x4 -#define TPGS_STATE_OFFLINE 0xe -#define TPGS_STATE_TRANSITIONING 0xf - #define TPGS_SUPPORT_NONE 0x00 #define TPGS_SUPPORT_OPTIMIZED 0x01 #define TPGS_SUPPORT_NONOPTIMIZED 0x02 @@ -177,7 +169,7 @@ static int submit_stpg(struct scsi_device *sdev, int group_id, /* Prepare the data buffer */ memset(stpg_data, 0, stpg_len); - stpg_data[4] = TPGS_STATE_OPTIMIZED & 0x0f; + stpg_data[4] = SCSI_ACCESS_STATE_OPTIMAL & 0x0f; put_unaligned_be16(group_id, &stpg_data[6]); /* Prepare the command. */ @@ -244,7 +236,7 @@ struct alua_port_group *alua_get_pg(struct scsi_device *sdev, pg->device_id_len = id_size; pg->group_id = group_id; pg->tpgs = tpgs; - pg->state = TPGS_STATE_OPTIMIZED; + pg->state = SCSI_ACCESS_STATE_OPTIMAL; if (optimize_stpg) pg->flags |= ALUA_OPTIMIZE_STPG; kref_init(&pg->kref); @@ -402,22 +394,22 @@ static int alua_check_vpd(struct scsi_device *sdev, struct alua_dh_data *h, return SCSI_DH_OK; } -static char print_alua_state(int state) +static char print_alua_state(enum scsi_access_state state) { switch (state) { - case TPGS_STATE_OPTIMIZED: + case SCSI_ACCESS_STATE_OPTIMAL: return 'A'; - case TPGS_STATE_NONOPTIMIZED: + case SCSI_ACCESS_STATE_ACTIVE: return 'N'; - case TPGS_STATE_STANDBY: + case SCSI_ACCESS_STATE_STANDBY: return 'S'; - case TPGS_STATE_UNAVAILABLE: + case SCSI_ACCESS_STATE_UNAVAILABLE: return 'U'; - case TPGS_STATE_LBA_DEPENDENT: + case SCSI_ACCESS_STATE_LBA: return 'L'; - case TPGS_STATE_OFFLINE: + case SCSI_ACCESS_STATE_OFFLINE: return 'O'; - case TPGS_STATE_TRANSITIONING: + case SCSI_ACCESS_STATE_TRANSITIONING: return 'T'; default: return 'X'; @@ -666,7 +658,7 @@ static int alua_rtpg(struct scsi_device *sdev, struct alua_port_group *pg) valid_states&TPGS_SUPPORT_OPTIMIZED?'A':'a'); switch (pg->state) { - case TPGS_STATE_TRANSITIONING: + case SCSI_ACCESS_STATE_TRANSITIONING: if (time_before(jiffies, pg->expiry)) { /* State transition, retry */ pg->interval = 2; @@ -674,11 +666,11 @@ static int alua_rtpg(struct scsi_device *sdev, struct alua_port_group *pg) } else { /* Transitioning time exceeded, set port to standby */ err = SCSI_DH_IO; - pg->state = TPGS_STATE_STANDBY; + pg->state = SCSI_ACCESS_STATE_STANDBY; pg->expiry = 0; } break; - case TPGS_STATE_OFFLINE: + case SCSI_ACCESS_STATE_OFFLINE: /* Path unusable */ err = SCSI_DH_DEV_OFFLINED; pg->expiry = 0; @@ -710,21 +702,21 @@ static unsigned alua_stpg(struct scsi_device *sdev, struct alua_port_group *pg) return SCSI_DH_RETRY; } switch (pg->state) { - case TPGS_STATE_OPTIMIZED: + case SCSI_ACCESS_STATE_OPTIMAL: return SCSI_DH_OK; - case TPGS_STATE_NONOPTIMIZED: + case SCSI_ACCESS_STATE_ACTIVE: if ((pg->flags & ALUA_OPTIMIZE_STPG) && !pg->pref && (pg->tpgs & TPGS_MODE_IMPLICIT)) return SCSI_DH_OK; break; - case TPGS_STATE_STANDBY: - case TPGS_STATE_UNAVAILABLE: + case SCSI_ACCESS_STATE_STANDBY: + case SCSI_ACCESS_STATE_UNAVAILABLE: break; - case TPGS_STATE_OFFLINE: + case SCSI_ACCESS_STATE_OFFLINE: return SCSI_DH_IO; break; - case TPGS_STATE_TRANSITIONING: + case SCSI_ACCESS_STATE_TRANSITIONING: break; default: sdev_printk(KERN_INFO, sdev, @@ -734,7 +726,7 @@ static unsigned alua_stpg(struct scsi_device *sdev, struct alua_port_group *pg) break; } /* Set state to transitioning */ - pg->state = TPGS_STATE_TRANSITIONING; + pg->state = SCSI_ACCESS_STATE_TRANSITIONING; retval = submit_stpg(sdev, pg->group_id, &sense_hdr); if (retval) { @@ -777,7 +769,7 @@ static void alua_rtpg_work(struct work_struct *work) int state = pg->state; spin_unlock_irqrestore(&pg->lock, flags); - if (state == TPGS_STATE_TRANSITIONING) { + if (state == SCSI_ACCESS_STATE_TRANSITIONING) { if (alua_tur(sdev) == SCSI_DH_RETRY) { spin_lock_irqsave(&pg->lock, flags); pg->flags &= ~ALUA_PG_RUNNING; @@ -1014,7 +1006,7 @@ static int alua_prep_fn(struct scsi_device *sdev, struct request *req) { struct alua_dh_data *h = sdev->handler_data; struct alua_port_group *pg; - int state = TPGS_STATE_OPTIMIZED; + enum scsi_access_state state = SCSI_ACCESS_STATE_OPTIMAL; int ret = BLKPREP_OK; rcu_read_lock(); @@ -1023,14 +1015,14 @@ static int alua_prep_fn(struct scsi_device *sdev, struct request *req) state = pg->state; /* Defer I/O while rtpg_work is active */ if (pg->rtpg_sdev) - state = TPGS_STATE_TRANSITIONING; + state = SCSI_ACCESS_STATE_TRANSITIONING; } rcu_read_unlock(); - if (state == TPGS_STATE_TRANSITIONING) + if (state == SCSI_ACCESS_STATE_TRANSITIONING) ret = BLKPREP_DEFER; - else if (state != TPGS_STATE_OPTIMIZED && - state != TPGS_STATE_NONOPTIMIZED && - state != TPGS_STATE_LBA_DEPENDENT) { + else if (state != SCSI_ACCESS_STATE_OPTIMAL && + state != SCSI_ACCESS_STATE_ACTIVE && + state != SCSI_ACCESS_STATE_LBA) { ret = BLKPREP_KILL; req->cmd_flags |= REQ_QUIET; }