From patchwork Tue Nov 14 21:41:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bart Van Assche X-Patchwork-Id: 13456039 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 04D8E33070; Tue, 14 Nov 2023 21:42:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=none Received: from mail-pl1-f182.google.com (mail-pl1-f182.google.com [209.85.214.182]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5267BFB; Tue, 14 Nov 2023 13:42:26 -0800 (PST) Received: by mail-pl1-f182.google.com with SMTP id d9443c01a7336-1cc53d0030fso2024735ad.0; Tue, 14 Nov 2023 13:42:26 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699998146; x=1700602946; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=kTU9M4tDmQIbWEc4YNDxclk8bmN1pALqT2vJyD7Eag8=; b=i5bd0+cpfFIt/V6593cb63I8yYzp2r3V5G8syC4LxLgHgmA7Lx0Uyq1jWKlcK9+nOW 9bRz9Hn6GyJ0/MS+MuAlO8XQHRSgScU8oZVKktcYP5iqgyRzvcJC/r2IaERTv7rS9Y0z sC306ovOvXBOMcGvIX+0oyxddxHj24C2xOCO2+LuWpvc+RxcigpsiwQis6vcxPmI6U1h tO1jvQu+lMzj8RoaiJVC0Muf0E6mxssh2f+7dUW/p7IgdJdyAMJNP6E1cWDYwPmNIr5J mNL9QzKdnewEcxXcU6OsFeerIPSQFnNm2U+ceMqcZctBPXQMqsyOCdjBgWKAksFPlE+O h4OA== X-Gm-Message-State: AOJu0YxBTmYHZ0VdRIF02GXFMM+sgiqD6ngTlL7LUwzIiEaisAFC+jmk EfSLTMjW5ms7BqCPvIItCgE= X-Google-Smtp-Source: AGHT+IHOMUHzn5ZM0eQoPjNaTe5xVTqA79xWEjRmhy0EzKGKLUuYtkdbvS4vLJRmJBcOnoQ89fH24g== X-Received: by 2002:a17:902:e891:b0:1c9:e77d:62d3 with SMTP id w17-20020a170902e89100b001c9e77d62d3mr4998248plg.10.1699998145727; Tue, 14 Nov 2023 13:42:25 -0800 (PST) Received: from bvanassche-linux.mtv.corp.google.com ([2620:0:1000:8411:2278:ad72:cefb:4d49]) by smtp.gmail.com with ESMTPSA id o16-20020a170902d4d000b001c3267ae317sm6133926plg.165.2023.11.14.13.42.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Nov 2023 13:42:25 -0800 (PST) From: Bart Van Assche To: "Martin K . Petersen" Cc: linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jens Axboe , Christoph Hellwig , Daejun Park , Kanchan Joshi , Bart Van Assche , Douglas Gilbert , "James E.J. Bottomley" Subject: [PATCH v4 14/15] scsi_debug: Implement GET STREAM STATUS Date: Tue, 14 Nov 2023 13:41:09 -0800 Message-ID: <20231114214132.1486867-15-bvanassche@acm.org> X-Mailer: git-send-email 2.43.0.rc0.421.g78406f8d94-goog In-Reply-To: <20231114214132.1486867-1-bvanassche@acm.org> References: <20231114214132.1486867-1-bvanassche@acm.org> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Implement the GET STREAM STATUS SCSI command. Report that the first three stream indexes correspond to permanent streams. Cc: Martin K. Petersen Cc: Douglas Gilbert Signed-off-by: Bart Van Assche --- drivers/scsi/scsi_debug.c | 44 ++++++++++++++++++++++++++++++++++++++- 1 file changed, 43 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 98fa675cbf37..daf64844d6cb 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -532,6 +532,8 @@ static int resp_write_scat(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_start_stop(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_readcap16(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_get_lba_status(struct scsi_cmnd *, struct sdebug_dev_info *); +static int resp_get_stream_status(struct scsi_cmnd *scp, + struct sdebug_dev_info *devip); static int resp_report_tgtpgs(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_unmap(struct scsi_cmnd *, struct sdebug_dev_info *); static int resp_rsup_opcodes(struct scsi_cmnd *, struct sdebug_dev_info *); @@ -606,6 +608,9 @@ static const struct opcode_info_t sa_in_16_iarr[] = { {0, 0x9e, 0x12, F_SA_LOW | F_D_IN, resp_get_lba_status, NULL, {16, 0x12, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0xc7} }, /* GET LBA STATUS(16) */ + {0, 0x9e, 0x16, F_SA_LOW | F_D_IN, resp_get_stream_status, NULL, + {16, 0x16, 0, 0, 0xff, 0xff, 0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, + 0, 0} }, /* GET STREAM STATUS */ }; static const struct opcode_info_t vl_iarr[] = { /* VARIABLE LENGTH */ @@ -2552,7 +2557,7 @@ static int resp_ctrl_m_pg(unsigned char *p, int pcontrol, int target) return sizeof(ctrl_m_pg); } -enum { MAXIMUM_NUMBER_OF_STREAMS = 4 }; +enum { MAXIMUM_NUMBER_OF_STREAMS = 4, PERMANENT_STREAM_COUNT = 3 }; /* IO Advice Hints Grouping mode page */ static int resp_grouping_m_pg(unsigned char *p, int pcontrol, int target) @@ -4547,6 +4552,43 @@ static int resp_get_lba_status(struct scsi_cmnd *scp, return fill_from_dev_buffer(scp, arr, SDEBUG_GET_LBA_STATUS_LEN); } +static int resp_get_stream_status(struct scsi_cmnd *scp, + struct sdebug_dev_info *devip) +{ + u16 starting_stream_id, stream_id; + const u8 *cmd = scp->cmnd; + u32 alloc_len, offset; + u8 arr[256]; + + starting_stream_id = get_unaligned_be16(cmd + 4); + alloc_len = get_unaligned_be32(cmd + 10); + + if (alloc_len < 8) { + mk_sense_invalid_fld(scp, SDEB_IN_CDB, 10, -1); + return check_condition_result; + } + + if (starting_stream_id >= MAXIMUM_NUMBER_OF_STREAMS) { + mk_sense_invalid_fld(scp, SDEB_IN_CDB, 4, -1); + return check_condition_result; + } + + for (offset = 8, stream_id = starting_stream_id; + offset + 8 <= min_t(u32, alloc_len, sizeof(arr)) && + stream_id < MAXIMUM_NUMBER_OF_STREAMS; + offset += 8, stream_id++) { + struct scsi_stream_status *stream_status = (void *)arr + offset; + + stream_status->perm = stream_id < PERMANENT_STREAM_COUNT; + put_unaligned_be16(stream_id, + &stream_status->stream_identifier); + stream_status->rel_lifetime = stream_id + 1; + } + put_unaligned_be32(offset - 8, arr + 0); /* PARAMETER DATA LENGTH */ + + return fill_from_dev_buffer(scp, arr, min(offset, alloc_len)); +} + static int resp_sync_cache(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) {