From patchwork Mon Dec 18 18:56:41 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: 13497427 Received: from mail-pg1-f177.google.com (mail-pg1-f177.google.com [209.85.215.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3245174E23; Mon, 18 Dec 2023 18:58:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=acm.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-pg1-f177.google.com with SMTP id 41be03b00d2f7-5c699b44dddso1133975a12.1; Mon, 18 Dec 2023 10:58:03 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702925883; x=1703530683; 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=TB+ig0WMe6VgVRdj/Yzge+HqFjz0R9pg2KftpXjuBxI=; b=cJeMzVbh9nLSK8SX8g1qXMMpaT8uqO8Ooniuw29lY1z3n2NckS79bQ5UaGJCNWcxhj +PFXJRb/3Oqao7vBv+hPbiETOY1a+VJj0QpOjqKVyflj3VRMtKTuL/G7K5+/CjNUbArC EcHsNs2Dye7fEzxKV7tyZSRqhZmKlQyxrpTZzdalJmuVXhgZqlj2dCTu5Tc3XlQwgm3X zJrja9gTSGY2vH80WzLNmUNes4PtM0uUMP5ASu7CEsXcUp12XXsu+X62WViM/AI+/XK8 qUhlbnAlDf8PgekWlBTT0AQVq5k/8HRvhC3/WAS7HCZWIdW4w1869o/Dri1vgAn15ted gGAg== X-Gm-Message-State: AOJu0YwTDEl3pk71lIY2TKHxj2/sCBzNu7xihgDil+XRYj/F9jbp5Kzu GMN7bW3ySOI1c+Xx3p/OBdA= X-Google-Smtp-Source: AGHT+IGC0uU03gGqvTWdn3MPUk9+SQmWbAyjx5EOVY9pu4HJJr1udnjIp3rLGPlbYqgblO+4+4V4ow== X-Received: by 2002:a05:6a20:1586:b0:190:53c1:fed1 with SMTP id h6-20020a056a20158600b0019053c1fed1mr10053992pzj.40.1702925883426; Mon, 18 Dec 2023 10:58:03 -0800 (PST) Received: from bvanassche-linux.mtv.corp.google.com ([2620:0:1000:8411:e67:7ba6:36a9:8cd5]) by smtp.gmail.com with ESMTPSA id n20-20020a056a0007d400b006d45707d8edsm3918397pfu.7.2023.12.18.10.58.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 Dec 2023 10:58:02 -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 v7 18/19] scsi: scsi_debug: Implement GET STREAM STATUS Date: Mon, 18 Dec 2023 10:56:41 -0800 Message-ID: <20231218185705.2002516-19-bvanassche@acm.org> X-Mailer: git-send-email 2.43.0.472.g3155946c3a-goog In-Reply-To: <20231218185705.2002516-1-bvanassche@acm.org> References: <20231218185705.2002516-1-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 five stream indexes correspond to permanent streams. Cc: Martin K. Petersen Cc: Douglas Gilbert Tested-by: Douglas Gilbert Signed-off-by: Bart Van Assche --- drivers/scsi/scsi_debug.c | 50 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 4e18265a05da..b2146f24f396 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -533,6 +533,8 @@ 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 *); @@ -607,6 +609,9 @@ 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 */ @@ -4581,6 +4586,51 @@ 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] = {}; + struct scsi_stream_status_header *h = (void *)arr; + + 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; + } + + /* + * The GET STREAM STATUS command only reports status information + * about open streams. Treat the non-permanent stream as open. + */ + put_unaligned_be16(MAXIMUM_NUMBER_OF_STREAMS, + &h->number_of_open_streams); + + 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, &h->len); /* 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) {