From patchwork Thu Jan 10 13:49:05 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anthony PERARD X-Patchwork-Id: 10755905 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C67F66C2 for ; Thu, 10 Jan 2019 14:18:16 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B1BF029941 for ; Thu, 10 Jan 2019 14:18:16 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A58942994B; Thu, 10 Jan 2019 14:18:16 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 4870429941 for ; Thu, 10 Jan 2019 14:18:15 +0000 (UTC) Received: from localhost ([127.0.0.1]:60875 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ghb9y-0002Wh-GI for patchwork-qemu-devel@patchwork.kernel.org; Thu, 10 Jan 2019 09:18:14 -0500 Received: from eggs.gnu.org ([209.51.188.92]:57991) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ghb59-0005zK-ND for qemu-devel@nongnu.org; Thu, 10 Jan 2019 09:13:18 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gharn-0002YL-CY for qemu-devel@nongnu.org; Thu, 10 Jan 2019 08:59:30 -0500 Received: from smtp03.citrix.com ([162.221.156.55]:12064) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gharj-0002Ue-8Q for qemu-devel@nongnu.org; Thu, 10 Jan 2019 08:59:24 -0500 X-IronPort-AV: E=Sophos;i="5.56,461,1539648000"; d="scan'208";a="75263694" From: Anthony PERARD To: Date: Thu, 10 Jan 2019 13:49:05 +0000 Message-ID: <20190110134917.16425-14-anthony.perard@citrix.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190110134917.16425-1-anthony.perard@citrix.com> References: <20190110134917.16425-1-anthony.perard@citrix.com> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 162.221.156.55 Subject: [Qemu-devel] [PULL 13/25] xen: remove 'XenBlkDev' and 'blkdev' names from dataplane/xen-block X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Anthony PERARD , xen-devel@lists.xenproject.org, Paul Durrant Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Paul Durrant This is a purely cosmetic patch that substitutes the old 'struct XenBlkDev' name with 'XenBlockDataPlane' and 'blkdev' field/variable names with 'dataplane', and then does necessary fix-up to adhere to coding style. No functional change. Signed-off-by: Paul Durrant Acked-by: Anthony Perard Signed-off-by: Anthony PERARD --- hw/block/dataplane/xen-block.c | 352 +++++++++++++++++---------------- hw/block/dataplane/xen-block.h | 2 +- 2 files changed, 183 insertions(+), 171 deletions(-) diff --git a/hw/block/dataplane/xen-block.c b/hw/block/dataplane/xen-block.c index ed2b91ffff..1ff464973c 100644 --- a/hw/block/dataplane/xen-block.c +++ b/hw/block/dataplane/xen-block.c @@ -38,12 +38,12 @@ struct ioreq { int presync; int aio_inflight; int aio_errors; - struct XenBlkDev *blkdev; + XenBlockDataPlane *dataplane; QLIST_ENTRY(ioreq) list; BlockAcctCookie acct; }; -struct XenBlkDev { +struct XenBlockDataPlane { XenDevice *xendev; XenEventChannel *event_channel; unsigned int *ring_ref; @@ -79,33 +79,33 @@ static void ioreq_reset(struct ioreq *ioreq) ioreq->aio_inflight = 0; ioreq->aio_errors = 0; - ioreq->blkdev = NULL; + ioreq->dataplane = NULL; memset(&ioreq->list, 0, sizeof(ioreq->list)); memset(&ioreq->acct, 0, sizeof(ioreq->acct)); qemu_iovec_reset(&ioreq->v); } -static struct ioreq *ioreq_start(struct XenBlkDev *blkdev) +static struct ioreq *ioreq_start(XenBlockDataPlane *dataplane) { struct ioreq *ioreq = NULL; - if (QLIST_EMPTY(&blkdev->freelist)) { - if (blkdev->requests_total >= blkdev->max_requests) { + if (QLIST_EMPTY(&dataplane->freelist)) { + if (dataplane->requests_total >= dataplane->max_requests) { goto out; } /* allocate new struct */ ioreq = g_malloc0(sizeof(*ioreq)); - ioreq->blkdev = blkdev; - blkdev->requests_total++; + ioreq->dataplane = dataplane; + dataplane->requests_total++; qemu_iovec_init(&ioreq->v, 1); } else { /* get one from freelist */ - ioreq = QLIST_FIRST(&blkdev->freelist); + ioreq = QLIST_FIRST(&dataplane->freelist); QLIST_REMOVE(ioreq, list); } - QLIST_INSERT_HEAD(&blkdev->inflight, ioreq, list); - blkdev->requests_inflight++; + QLIST_INSERT_HEAD(&dataplane->inflight, ioreq, list); + dataplane->requests_inflight++; out: return ioreq; @@ -113,26 +113,26 @@ static struct ioreq *ioreq_start(struct XenBlkDev *blkdev) static void ioreq_finish(struct ioreq *ioreq) { - struct XenBlkDev *blkdev = ioreq->blkdev; + XenBlockDataPlane *dataplane = ioreq->dataplane; QLIST_REMOVE(ioreq, list); - QLIST_INSERT_HEAD(&blkdev->finished, ioreq, list); - blkdev->requests_inflight--; - blkdev->requests_finished++; + QLIST_INSERT_HEAD(&dataplane->finished, ioreq, list); + dataplane->requests_inflight--; + dataplane->requests_finished++; } static void ioreq_release(struct ioreq *ioreq, bool finish) { - struct XenBlkDev *blkdev = ioreq->blkdev; + XenBlockDataPlane *dataplane = ioreq->dataplane; QLIST_REMOVE(ioreq, list); ioreq_reset(ioreq); - ioreq->blkdev = blkdev; - QLIST_INSERT_HEAD(&blkdev->freelist, ioreq, list); + ioreq->dataplane = dataplane; + QLIST_INSERT_HEAD(&dataplane->freelist, ioreq, list); if (finish) { - blkdev->requests_finished--; + dataplane->requests_finished--; } else { - blkdev->requests_inflight--; + dataplane->requests_inflight--; } } @@ -142,7 +142,7 @@ static void ioreq_release(struct ioreq *ioreq, bool finish) */ static int ioreq_parse(struct ioreq *ioreq) { - struct XenBlkDev *blkdev = ioreq->blkdev; + XenBlockDataPlane *dataplane = ioreq->dataplane; size_t len; int i; @@ -165,12 +165,12 @@ static int ioreq_parse(struct ioreq *ioreq) }; if (ioreq->req.operation != BLKIF_OP_READ && - blk_is_read_only(blkdev->blk)) { + blk_is_read_only(dataplane->blk)) { error_report("error: write req for ro device"); goto err; } - ioreq->start = ioreq->req.sector_number * blkdev->file_blk; + ioreq->start = ioreq->req.sector_number * dataplane->file_blk; for (i = 0; i < ioreq->req.nr_segments; i++) { if (i == BLKIF_MAX_SEGMENTS_PER_REQUEST) { error_report("error: nr_segments too big"); @@ -180,16 +180,16 @@ static int ioreq_parse(struct ioreq *ioreq) error_report("error: first > last sector"); goto err; } - if (ioreq->req.seg[i].last_sect * blkdev->file_blk >= XC_PAGE_SIZE) { + if (ioreq->req.seg[i].last_sect * dataplane->file_blk >= XC_PAGE_SIZE) { error_report("error: page crossing"); goto err; } len = (ioreq->req.seg[i].last_sect - - ioreq->req.seg[i].first_sect + 1) * blkdev->file_blk; + ioreq->req.seg[i].first_sect + 1) * dataplane->file_blk; ioreq->size += len; } - if (ioreq->start + ioreq->size > blkdev->file_size) { + if (ioreq->start + ioreq->size > dataplane->file_size) { error_report("error: access beyond end of file"); goto err; } @@ -202,11 +202,11 @@ static int ioreq_parse(struct ioreq *ioreq) static int ioreq_grant_copy(struct ioreq *ioreq) { - struct XenBlkDev *blkdev = ioreq->blkdev; - XenDevice *xendev = blkdev->xendev; + XenBlockDataPlane *dataplane = ioreq->dataplane; + XenDevice *xendev = dataplane->xendev; XenDeviceGrantCopySegment segs[BLKIF_MAX_SEGMENTS_PER_REQUEST]; int i, count; - int64_t file_blk = blkdev->file_blk; + int64_t file_blk = dataplane->file_blk; bool to_domain = (ioreq->req.operation == BLKIF_OP_READ); void *virt = ioreq->buf; Error *local_err = NULL; @@ -251,9 +251,9 @@ static int ioreq_runio_qemu_aio(struct ioreq *ioreq); static void qemu_aio_complete(void *opaque, int ret) { struct ioreq *ioreq = opaque; - struct XenBlkDev *blkdev = ioreq->blkdev; + XenBlockDataPlane *dataplane = ioreq->dataplane; - aio_context_acquire(blkdev->ctx); + aio_context_acquire(dataplane->ctx); if (ret != 0) { error_report("%s I/O error", @@ -302,25 +302,25 @@ static void qemu_aio_complete(void *opaque, int ret) } case BLKIF_OP_READ: if (ioreq->status == BLKIF_RSP_OKAY) { - block_acct_done(blk_get_stats(blkdev->blk), &ioreq->acct); + block_acct_done(blk_get_stats(dataplane->blk), &ioreq->acct); } else { - block_acct_failed(blk_get_stats(blkdev->blk), &ioreq->acct); + block_acct_failed(blk_get_stats(dataplane->blk), &ioreq->acct); } break; case BLKIF_OP_DISCARD: default: break; } - qemu_bh_schedule(blkdev->bh); + qemu_bh_schedule(dataplane->bh); done: - aio_context_release(blkdev->ctx); + aio_context_release(dataplane->ctx); } static bool blk_split_discard(struct ioreq *ioreq, blkif_sector_t sector_number, uint64_t nr_sectors) { - struct XenBlkDev *blkdev = ioreq->blkdev; + XenBlockDataPlane *dataplane = ioreq->dataplane; int64_t byte_offset; int byte_chunk; uint64_t byte_remaining, limit; @@ -329,18 +329,18 @@ static bool blk_split_discard(struct ioreq *ioreq, blkif_sector_t sector_number, /* Wrap around, or overflowing byte limit? */ if (sec_start + sec_count < sec_count || - sec_start + sec_count > INT64_MAX / blkdev->file_blk) { + sec_start + sec_count > INT64_MAX / dataplane->file_blk) { return false; } - limit = BDRV_REQUEST_MAX_SECTORS * blkdev->file_blk; - byte_offset = sec_start * blkdev->file_blk; - byte_remaining = sec_count * blkdev->file_blk; + limit = BDRV_REQUEST_MAX_SECTORS * dataplane->file_blk; + byte_offset = sec_start * dataplane->file_blk; + byte_remaining = sec_count * dataplane->file_blk; do { byte_chunk = byte_remaining > limit ? limit : byte_remaining; ioreq->aio_inflight++; - blk_aio_pdiscard(blkdev->blk, byte_offset, byte_chunk, + blk_aio_pdiscard(dataplane->blk, byte_offset, byte_chunk, qemu_aio_complete, ioreq); byte_remaining -= byte_chunk; byte_offset += byte_chunk; @@ -351,7 +351,7 @@ static bool blk_split_discard(struct ioreq *ioreq, blkif_sector_t sector_number, static int ioreq_runio_qemu_aio(struct ioreq *ioreq) { - struct XenBlkDev *blkdev = ioreq->blkdev; + XenBlockDataPlane *dataplane = ioreq->dataplane; ioreq->buf = qemu_memalign(XC_PAGE_SIZE, ioreq->size); if (ioreq->req.nr_segments && @@ -364,17 +364,17 @@ static int ioreq_runio_qemu_aio(struct ioreq *ioreq) ioreq->aio_inflight++; if (ioreq->presync) { - blk_aio_flush(ioreq->blkdev->blk, qemu_aio_complete, ioreq); + blk_aio_flush(ioreq->dataplane->blk, qemu_aio_complete, ioreq); return 0; } switch (ioreq->req.operation) { case BLKIF_OP_READ: qemu_iovec_add(&ioreq->v, ioreq->buf, ioreq->size); - block_acct_start(blk_get_stats(blkdev->blk), &ioreq->acct, + block_acct_start(blk_get_stats(dataplane->blk), &ioreq->acct, ioreq->v.size, BLOCK_ACCT_READ); ioreq->aio_inflight++; - blk_aio_preadv(blkdev->blk, ioreq->start, &ioreq->v, 0, + blk_aio_preadv(dataplane->blk, ioreq->start, &ioreq->v, 0, qemu_aio_complete, ioreq); break; case BLKIF_OP_WRITE: @@ -384,12 +384,12 @@ static int ioreq_runio_qemu_aio(struct ioreq *ioreq) } qemu_iovec_add(&ioreq->v, ioreq->buf, ioreq->size); - block_acct_start(blk_get_stats(blkdev->blk), &ioreq->acct, + block_acct_start(blk_get_stats(dataplane->blk), &ioreq->acct, ioreq->v.size, ioreq->req.operation == BLKIF_OP_WRITE ? BLOCK_ACCT_WRITE : BLOCK_ACCT_FLUSH); ioreq->aio_inflight++; - blk_aio_pwritev(blkdev->blk, ioreq->start, &ioreq->v, 0, + blk_aio_pwritev(dataplane->blk, ioreq->start, &ioreq->v, 0, qemu_aio_complete, ioreq); break; case BLKIF_OP_DISCARD: @@ -417,27 +417,27 @@ static int ioreq_runio_qemu_aio(struct ioreq *ioreq) static int blk_send_response_one(struct ioreq *ioreq) { - struct XenBlkDev *blkdev = ioreq->blkdev; + XenBlockDataPlane *dataplane = ioreq->dataplane; int send_notify = 0; int have_requests = 0; blkif_response_t *resp; /* Place on the response ring for the relevant domain. */ - switch (blkdev->protocol) { + switch (dataplane->protocol) { case BLKIF_PROTOCOL_NATIVE: resp = (blkif_response_t *)RING_GET_RESPONSE( - &blkdev->rings.native, - blkdev->rings.native.rsp_prod_pvt); + &dataplane->rings.native, + dataplane->rings.native.rsp_prod_pvt); break; case BLKIF_PROTOCOL_X86_32: resp = (blkif_response_t *)RING_GET_RESPONSE( - &blkdev->rings.x86_32_part, - blkdev->rings.x86_32_part.rsp_prod_pvt); + &dataplane->rings.x86_32_part, + dataplane->rings.x86_32_part.rsp_prod_pvt); break; case BLKIF_PROTOCOL_X86_64: resp = (blkif_response_t *)RING_GET_RESPONSE( - &blkdev->rings.x86_64_part, - blkdev->rings.x86_64_part.rsp_prod_pvt); + &dataplane->rings.x86_64_part, + dataplane->rings.x86_64_part.rsp_prod_pvt); break; default: return 0; @@ -447,42 +447,45 @@ static int blk_send_response_one(struct ioreq *ioreq) resp->operation = ioreq->req.operation; resp->status = ioreq->status; - blkdev->rings.common.rsp_prod_pvt++; + dataplane->rings.common.rsp_prod_pvt++; - RING_PUSH_RESPONSES_AND_CHECK_NOTIFY(&blkdev->rings.common, send_notify); - if (blkdev->rings.common.rsp_prod_pvt == blkdev->rings.common.req_cons) { + RING_PUSH_RESPONSES_AND_CHECK_NOTIFY(&dataplane->rings.common, + send_notify); + if (dataplane->rings.common.rsp_prod_pvt == + dataplane->rings.common.req_cons) { /* * Tail check for pending requests. Allows frontend to avoid * notifications if requests are already in flight (lower * overheads and promotes batching). */ - RING_FINAL_CHECK_FOR_REQUESTS(&blkdev->rings.common, have_requests); - } else if (RING_HAS_UNCONSUMED_REQUESTS(&blkdev->rings.common)) { + RING_FINAL_CHECK_FOR_REQUESTS(&dataplane->rings.common, + have_requests); + } else if (RING_HAS_UNCONSUMED_REQUESTS(&dataplane->rings.common)) { have_requests = 1; } if (have_requests) { - blkdev->more_work++; + dataplane->more_work++; } return send_notify; } /* walk finished list, send outstanding responses, free requests */ -static void blk_send_response_all(struct XenBlkDev *blkdev) +static void blk_send_response_all(XenBlockDataPlane *dataplane) { struct ioreq *ioreq; int send_notify = 0; - while (!QLIST_EMPTY(&blkdev->finished)) { - ioreq = QLIST_FIRST(&blkdev->finished); + while (!QLIST_EMPTY(&dataplane->finished)) { + ioreq = QLIST_FIRST(&dataplane->finished); send_notify += blk_send_response_one(ioreq); ioreq_release(ioreq, true); } if (send_notify) { Error *local_err = NULL; - xen_device_notify_event_channel(blkdev->xendev, - blkdev->event_channel, + xen_device_notify_event_channel(dataplane->xendev, + dataplane->event_channel, &local_err); if (local_err) { error_report_err(local_err); @@ -490,67 +493,76 @@ static void blk_send_response_all(struct XenBlkDev *blkdev) } } -static int blk_get_request(struct XenBlkDev *blkdev, struct ioreq *ioreq, +static int blk_get_request(XenBlockDataPlane *dataplane, struct ioreq *ioreq, RING_IDX rc) { - switch (blkdev->protocol) { - case BLKIF_PROTOCOL_NATIVE: - memcpy(&ioreq->req, RING_GET_REQUEST(&blkdev->rings.native, rc), - sizeof(ioreq->req)); + switch (dataplane->protocol) { + case BLKIF_PROTOCOL_NATIVE: { + blkif_request_t *req = + RING_GET_REQUEST(&dataplane->rings.native, rc); + + memcpy(&ioreq->req, req, sizeof(ioreq->req)); break; - case BLKIF_PROTOCOL_X86_32: - blkif_get_x86_32_req(&ioreq->req, - RING_GET_REQUEST(&blkdev->rings.x86_32_part, rc)); + } + case BLKIF_PROTOCOL_X86_32: { + blkif_x86_32_request_t *req = + RING_GET_REQUEST(&dataplane->rings.x86_32_part, rc); + + blkif_get_x86_32_req(&ioreq->req, req); break; - case BLKIF_PROTOCOL_X86_64: - blkif_get_x86_64_req(&ioreq->req, - RING_GET_REQUEST(&blkdev->rings.x86_64_part, rc)); + } + case BLKIF_PROTOCOL_X86_64: { + blkif_x86_64_request_t *req = + RING_GET_REQUEST(&dataplane->rings.x86_64_part, rc); + + blkif_get_x86_64_req(&ioreq->req, req); break; } + } /* Prevent the compiler from accessing the on-ring fields instead. */ barrier(); return 0; } -static void blk_handle_requests(struct XenBlkDev *blkdev) +static void blk_handle_requests(XenBlockDataPlane *dataplane) { RING_IDX rc, rp; struct ioreq *ioreq; - blkdev->more_work = 0; + dataplane->more_work = 0; - rc = blkdev->rings.common.req_cons; - rp = blkdev->rings.common.sring->req_prod; + rc = dataplane->rings.common.req_cons; + rp = dataplane->rings.common.sring->req_prod; xen_rmb(); /* Ensure we see queued requests up to 'rp'. */ - blk_send_response_all(blkdev); + blk_send_response_all(dataplane); while (rc != rp) { /* pull request from ring */ - if (RING_REQUEST_CONS_OVERFLOW(&blkdev->rings.common, rc)) { + if (RING_REQUEST_CONS_OVERFLOW(&dataplane->rings.common, rc)) { break; } - ioreq = ioreq_start(blkdev); + ioreq = ioreq_start(dataplane); if (ioreq == NULL) { - blkdev->more_work++; + dataplane->more_work++; break; } - blk_get_request(blkdev, ioreq, rc); - blkdev->rings.common.req_cons = ++rc; + blk_get_request(dataplane, ioreq, rc); + dataplane->rings.common.req_cons = ++rc; /* parse them */ if (ioreq_parse(ioreq) != 0) { switch (ioreq->req.operation) { case BLKIF_OP_READ: - block_acct_invalid(blk_get_stats(blkdev->blk), + block_acct_invalid(blk_get_stats(dataplane->blk), BLOCK_ACCT_READ); break; case BLKIF_OP_WRITE: - block_acct_invalid(blk_get_stats(blkdev->blk), + block_acct_invalid(blk_get_stats(dataplane->blk), BLOCK_ACCT_WRITE); break; case BLKIF_OP_FLUSH_DISKCACHE: - block_acct_invalid(blk_get_stats(blkdev->blk), + block_acct_invalid(blk_get_stats(dataplane->blk), BLOCK_ACCT_FLUSH); default: break; @@ -559,8 +571,8 @@ static void blk_handle_requests(struct XenBlkDev *blkdev) if (blk_send_response_one(ioreq)) { Error *local_err = NULL; - xen_device_notify_event_channel(blkdev->xendev, - blkdev->event_channel, + xen_device_notify_event_channel(dataplane->xendev, + dataplane->event_channel, &local_err); if (local_err) { error_report_err(local_err); @@ -573,173 +585,173 @@ static void blk_handle_requests(struct XenBlkDev *blkdev) ioreq_runio_qemu_aio(ioreq); } - if (blkdev->more_work && blkdev->requests_inflight < blkdev->max_requests) { - qemu_bh_schedule(blkdev->bh); + if (dataplane->more_work && + dataplane->requests_inflight < dataplane->max_requests) { + qemu_bh_schedule(dataplane->bh); } } static void blk_bh(void *opaque) { - struct XenBlkDev *blkdev = opaque; + XenBlockDataPlane *dataplane = opaque; - aio_context_acquire(blkdev->ctx); - blk_handle_requests(blkdev); - aio_context_release(blkdev->ctx); + aio_context_acquire(dataplane->ctx); + blk_handle_requests(dataplane); + aio_context_release(dataplane->ctx); } static void blk_event(void *opaque) { - struct XenBlkDev *blkdev = opaque; + XenBlockDataPlane *dataplane = opaque; - qemu_bh_schedule(blkdev->bh); + qemu_bh_schedule(dataplane->bh); } -struct XenBlkDev *xen_block_dataplane_create(XenDevice *xendev, - BlockConf *conf, - IOThread *iothread) +XenBlockDataPlane *xen_block_dataplane_create(XenDevice *xendev, + BlockConf *conf, + IOThread *iothread) { - struct XenBlkDev *blkdev = g_new0(struct XenBlkDev, 1); + XenBlockDataPlane *dataplane = g_new0(XenBlockDataPlane, 1); - blkdev->xendev = xendev; - blkdev->file_blk = conf->logical_block_size; - blkdev->blk = conf->blk; - blkdev->file_size = blk_getlength(blkdev->blk); + dataplane->xendev = xendev; + dataplane->file_blk = conf->logical_block_size; + dataplane->blk = conf->blk; + dataplane->file_size = blk_getlength(dataplane->blk); - QLIST_INIT(&blkdev->inflight); - QLIST_INIT(&blkdev->finished); - QLIST_INIT(&blkdev->freelist); + QLIST_INIT(&dataplane->inflight); + QLIST_INIT(&dataplane->finished); + QLIST_INIT(&dataplane->freelist); if (iothread) { - blkdev->iothread = iothread; - object_ref(OBJECT(blkdev->iothread)); - blkdev->ctx = iothread_get_aio_context(blkdev->iothread); + dataplane->iothread = iothread; + object_ref(OBJECT(dataplane->iothread)); + dataplane->ctx = iothread_get_aio_context(dataplane->iothread); } else { - blkdev->ctx = qemu_get_aio_context(); + dataplane->ctx = qemu_get_aio_context(); } - blkdev->bh = aio_bh_new(blkdev->ctx, blk_bh, blkdev); + dataplane->bh = aio_bh_new(dataplane->ctx, blk_bh, dataplane); - return blkdev; + return dataplane; } -void xen_block_dataplane_destroy(struct XenBlkDev *blkdev) +void xen_block_dataplane_destroy(XenBlockDataPlane *dataplane) { struct ioreq *ioreq; - if (!blkdev) { + if (!dataplane) { return; } - while (!QLIST_EMPTY(&blkdev->freelist)) { - ioreq = QLIST_FIRST(&blkdev->freelist); + while (!QLIST_EMPTY(&dataplane->freelist)) { + ioreq = QLIST_FIRST(&dataplane->freelist); QLIST_REMOVE(ioreq, list); qemu_iovec_destroy(&ioreq->v); g_free(ioreq); } - qemu_bh_delete(blkdev->bh); - if (blkdev->iothread) { - object_unref(OBJECT(blkdev->iothread)); + qemu_bh_delete(dataplane->bh); + if (dataplane->iothread) { + object_unref(OBJECT(dataplane->iothread)); } - g_free(blkdev); + g_free(dataplane); } - -void xen_block_dataplane_stop(struct XenBlkDev *blkdev) +void xen_block_dataplane_stop(XenBlockDataPlane *dataplane) { XenDevice *xendev; - if (!blkdev) { + if (!dataplane) { return; } - aio_context_acquire(blkdev->ctx); - blk_set_aio_context(blkdev->blk, qemu_get_aio_context()); - aio_context_release(blkdev->ctx); + aio_context_acquire(dataplane->ctx); + blk_set_aio_context(dataplane->blk, qemu_get_aio_context()); + aio_context_release(dataplane->ctx); - xendev = blkdev->xendev; + xendev = dataplane->xendev; - if (blkdev->event_channel) { + if (dataplane->event_channel) { Error *local_err = NULL; - xen_device_unbind_event_channel(xendev, blkdev->event_channel, + xen_device_unbind_event_channel(xendev, dataplane->event_channel, &local_err); - blkdev->event_channel = NULL; + dataplane->event_channel = NULL; if (local_err) { error_report_err(local_err); } } - if (blkdev->sring) { + if (dataplane->sring) { Error *local_err = NULL; - xen_device_unmap_grant_refs(xendev, blkdev->sring, - blkdev->nr_ring_ref, &local_err); - blkdev->sring = NULL; + xen_device_unmap_grant_refs(xendev, dataplane->sring, + dataplane->nr_ring_ref, &local_err); + dataplane->sring = NULL; if (local_err) { error_report_err(local_err); } } - g_free(blkdev->ring_ref); - blkdev->ring_ref = NULL; + g_free(dataplane->ring_ref); + dataplane->ring_ref = NULL; } -void xen_block_dataplane_start(struct XenBlkDev *blkdev, +void xen_block_dataplane_start(XenBlockDataPlane *dataplane, const unsigned int ring_ref[], unsigned int nr_ring_ref, unsigned int event_channel, unsigned int protocol, Error **errp) { - XenDevice *xendev = blkdev->xendev; + XenDevice *xendev = dataplane->xendev; Error *local_err = NULL; unsigned int ring_size; unsigned int i; - blkdev->nr_ring_ref = nr_ring_ref; - blkdev->ring_ref = g_new(unsigned int, nr_ring_ref); + dataplane->nr_ring_ref = nr_ring_ref; + dataplane->ring_ref = g_new(unsigned int, nr_ring_ref); for (i = 0; i < nr_ring_ref; i++) { - blkdev->ring_ref[i] = ring_ref[i]; + dataplane->ring_ref[i] = ring_ref[i]; } - blkdev->protocol = protocol; + dataplane->protocol = protocol; - ring_size = XC_PAGE_SIZE * blkdev->nr_ring_ref; - switch (blkdev->protocol) { + ring_size = XC_PAGE_SIZE * dataplane->nr_ring_ref; + switch (dataplane->protocol) { case BLKIF_PROTOCOL_NATIVE: { - blkdev->max_requests = __CONST_RING_SIZE(blkif, ring_size); + dataplane->max_requests = __CONST_RING_SIZE(blkif, ring_size); break; } case BLKIF_PROTOCOL_X86_32: { - blkdev->max_requests = __CONST_RING_SIZE(blkif_x86_32, ring_size); + dataplane->max_requests = __CONST_RING_SIZE(blkif_x86_32, ring_size); break; } case BLKIF_PROTOCOL_X86_64: { - blkdev->max_requests = __CONST_RING_SIZE(blkif_x86_64, ring_size); + dataplane->max_requests = __CONST_RING_SIZE(blkif_x86_64, ring_size); break; } default: - error_setg(errp, "unknown protocol %u", blkdev->protocol); + error_setg(errp, "unknown protocol %u", dataplane->protocol); return; } - xen_device_set_max_grant_refs(xendev, blkdev->nr_ring_ref, + xen_device_set_max_grant_refs(xendev, dataplane->nr_ring_ref, &local_err); if (local_err) { error_propagate(errp, local_err); goto stop; } - blkdev->sring = xen_device_map_grant_refs(xendev, - blkdev->ring_ref, - blkdev->nr_ring_ref, + dataplane->sring = xen_device_map_grant_refs(xendev, + dataplane->ring_ref, + dataplane->nr_ring_ref, PROT_READ | PROT_WRITE, &local_err); if (local_err) { @@ -747,46 +759,46 @@ void xen_block_dataplane_start(struct XenBlkDev *blkdev, goto stop; } - switch (blkdev->protocol) { + switch (dataplane->protocol) { case BLKIF_PROTOCOL_NATIVE: { - blkif_sring_t *sring_native = blkdev->sring; + blkif_sring_t *sring_native = dataplane->sring; - BACK_RING_INIT(&blkdev->rings.native, sring_native, ring_size); + BACK_RING_INIT(&dataplane->rings.native, sring_native, ring_size); break; } case BLKIF_PROTOCOL_X86_32: { - blkif_x86_32_sring_t *sring_x86_32 = blkdev->sring; + blkif_x86_32_sring_t *sring_x86_32 = dataplane->sring; - BACK_RING_INIT(&blkdev->rings.x86_32_part, sring_x86_32, + BACK_RING_INIT(&dataplane->rings.x86_32_part, sring_x86_32, ring_size); break; } case BLKIF_PROTOCOL_X86_64: { - blkif_x86_64_sring_t *sring_x86_64 = blkdev->sring; + blkif_x86_64_sring_t *sring_x86_64 = dataplane->sring; - BACK_RING_INIT(&blkdev->rings.x86_64_part, sring_x86_64, + BACK_RING_INIT(&dataplane->rings.x86_64_part, sring_x86_64, ring_size); break; } } - blkdev->event_channel = + dataplane->event_channel = xen_device_bind_event_channel(xendev, event_channel, - blk_event, blkdev, + blk_event, dataplane, &local_err); if (local_err) { error_propagate(errp, local_err); goto stop; } - aio_context_acquire(blkdev->ctx); - blk_set_aio_context(blkdev->blk, blkdev->ctx); - aio_context_release(blkdev->ctx); + aio_context_acquire(dataplane->ctx); + blk_set_aio_context(dataplane->blk, dataplane->ctx); + aio_context_release(dataplane->ctx); return; stop: - xen_block_dataplane_stop(blkdev); + xen_block_dataplane_stop(dataplane); } diff --git a/hw/block/dataplane/xen-block.h b/hw/block/dataplane/xen-block.h index f31da38464..d6fa6d26dd 100644 --- a/hw/block/dataplane/xen-block.h +++ b/hw/block/dataplane/xen-block.h @@ -12,7 +12,7 @@ #include "hw/xen/xen-bus.h" #include "sysemu/iothread.h" -typedef struct XenBlkDev XenBlockDataPlane; +typedef struct XenBlockDataPlane XenBlockDataPlane; XenBlockDataPlane *xen_block_dataplane_create(XenDevice *xendev, BlockConf *conf,