From patchwork Tue Jan 12 06:08:32 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Aneesh Kumar K.V" X-Patchwork-Id: 566315 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id C1B4F14032B for ; Tue, 12 Jan 2016 17:13:02 +1100 (AEDT) Received: from localhost ([::1]:58347 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aIsCS-0001WA-3K for incoming@patchwork.ozlabs.org; Tue, 12 Jan 2016 01:13:00 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59759) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aIs8d-0002Li-RJ for qemu-devel@nongnu.org; Tue, 12 Jan 2016 01:09:05 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aIs8Z-00065b-PM for qemu-devel@nongnu.org; Tue, 12 Jan 2016 01:09:03 -0500 Received: from e28smtp05.in.ibm.com ([125.16.236.5]:34596) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aIs8Y-00064y-H5 for qemu-devel@nongnu.org; Tue, 12 Jan 2016 01:08:59 -0500 Received: from localhost by e28smtp05.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Tue, 12 Jan 2016 11:38:54 +0530 X-IBM-Helo: d28dlp03.in.ibm.com X-IBM-MailFrom: aneesh.kumar@linux.vnet.ibm.com X-IBM-RcptTo: qemu-devel@nongnu.org Received: from d28relay03.in.ibm.com (d28relay03.in.ibm.com [9.184.220.60]) by d28dlp03.in.ibm.com (Postfix) with ESMTP id 227B51258060 for ; Tue, 12 Jan 2016 11:39:41 +0530 (IST) Received: from d28av04.in.ibm.com (d28av04.in.ibm.com [9.184.220.66]) by d28relay03.in.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u0C68sjd64946184 for ; Tue, 12 Jan 2016 11:38:54 +0530 Received: from d28av04.in.ibm.com (localhost [127.0.0.1]) by d28av04.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u0C68rFY025612 for ; Tue, 12 Jan 2016 11:38:54 +0530 Received: from skywalker.in.ibm.com (skywalker.in.ibm.com [9.124.35.51]) by d28av04.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id u0C68ZAX023715; Tue, 12 Jan 2016 11:38:52 +0530 From: "Aneesh Kumar K.V" To: peter.maydell@linaro.org Date: Tue, 12 Jan 2016 11:38:32 +0530 Message-Id: <1452578912-12546-26-git-send-email-aneesh.kumar@linux.vnet.ibm.com> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1452578912-12546-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> References: <1452578912-12546-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16011206-0017-0000-0000-0000096D1B48 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 125.16.236.5 Cc: Wei Liu , qemu-devel@nongnu.org, "Aneesh Kumar K.V" Subject: [Qemu-devel] [PATCH 25/25] 9pfs: introduce V9fsVirtioState X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Wei Liu V9fsState now only contains generic fields. Introduce V9fsVirtioState for virtio transport. Change virtio-pci and virtio-ccw to use V9fsVirtioState. Signed-off-by: Wei Liu Signed-off-by: Aneesh Kumar K.V --- hw/9pfs/9p.c | 11 +++++-- hw/9pfs/9p.h | 6 +--- hw/9pfs/virtio-9p-device.c | 78 +++++++++++++++++++++++++++++----------------- hw/9pfs/virtio-9p.h | 12 ++++++- hw/s390x/virtio-ccw.h | 2 +- hw/virtio/virtio-pci.h | 2 +- 6 files changed, 71 insertions(+), 40 deletions(-) diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c index a9044039aef3..3ff310605cd4 100644 --- a/hw/9pfs/9p.c +++ b/hw/9pfs/9p.c @@ -1585,6 +1585,8 @@ static int v9fs_xattr_read(V9fsState *s, V9fsPDU *pdu, V9fsFidState *fidp, size_t offset = 7; int read_count; int64_t xattr_len; + V9fsVirtioState *v = container_of(s, V9fsVirtioState, state); + VirtQueueElement *elem = &v->elems[pdu->idx]; xattr_len = fidp->fs.xattr.len; read_count = xattr_len - off; @@ -1601,7 +1603,8 @@ static int v9fs_xattr_read(V9fsState *s, V9fsPDU *pdu, V9fsFidState *fidp, return err; } offset += err; - err = v9fs_pack(pdu->elem.in_sg, pdu->elem.in_num, offset, + + err = v9fs_pack(elem->in_sg, elem->in_num, offset, ((char *)fidp->fs.xattr.value) + off, read_count); if (err < 0) { @@ -3269,6 +3272,7 @@ void pdu_submit(V9fsPDU *pdu) /* Returns 0 on success, 1 on failure. */ int v9fs_device_realize_common(V9fsState *s, Error **errp) { + V9fsVirtioState *v = container_of(s, V9fsVirtioState, state); int i, len; struct stat stat; FsDriverEntry *fse; @@ -3279,8 +3283,9 @@ int v9fs_device_realize_common(V9fsState *s, Error **errp) QLIST_INIT(&s->free_list); QLIST_INIT(&s->active_list); for (i = 0; i < (MAX_REQ - 1); i++) { - QLIST_INSERT_HEAD(&s->free_list, &s->pdus[i], next); - s->pdus[i].s = s; + QLIST_INSERT_HEAD(&s->free_list, &v->pdus[i], next); + v->pdus[i].s = s; + v->pdus[i].idx = i; } v9fs_path_init(&path); diff --git a/hw/9pfs/9p.h b/hw/9pfs/9p.h index 3fe4da4e2890..edcd51be1525 100644 --- a/hw/9pfs/9p.h +++ b/hw/9pfs/9p.h @@ -131,9 +131,9 @@ struct V9fsPDU uint8_t id; uint8_t cancelled; CoQueue complete; - VirtQueueElement elem; struct V9fsState *s; QLIST_ENTRY(V9fsPDU) next; + uint32_t idx; }; @@ -205,16 +205,12 @@ struct V9fsFidState typedef struct V9fsState { - VirtIODevice parent_obj; - VirtQueue *vq; - V9fsPDU pdus[MAX_REQ]; QLIST_HEAD(, V9fsPDU) free_list; QLIST_HEAD(, V9fsPDU) active_list; V9fsFidState *fid_list; FileOperations *ops; FsContext ctx; char *tag; - size_t config_size; enum p9_proto_version proto_version; int32_t msize; /* diff --git a/hw/9pfs/virtio-9p-device.c b/hw/9pfs/virtio-9p-device.c index 4aa8a6b33e7a..5643fd5b13e8 100644 --- a/hw/9pfs/virtio-9p-device.c +++ b/hw/9pfs/virtio-9p-device.c @@ -24,33 +24,41 @@ void virtio_9p_push_and_notify(V9fsPDU *pdu) { V9fsState *s = pdu->s; + V9fsVirtioState *v = container_of(s, V9fsVirtioState, state); + VirtQueueElement *elem = &v->elems[pdu->idx]; /* push onto queue and notify */ - virtqueue_push(s->vq, &pdu->elem, pdu->size); + virtqueue_push(v->vq, elem, pdu->size); /* FIXME: we should batch these completions */ - virtio_notify(VIRTIO_DEVICE(s), s->vq); + virtio_notify(VIRTIO_DEVICE(v), v->vq); } static void handle_9p_output(VirtIODevice *vdev, VirtQueue *vq) { - V9fsState *s = (V9fsState *)vdev; + V9fsVirtioState *v = (V9fsVirtioState *)vdev; + V9fsState *s = &v->state; V9fsPDU *pdu; ssize_t len; - while ((pdu = pdu_alloc(s)) && - (len = virtqueue_pop(vq, &pdu->elem)) != 0) { + while ((pdu = pdu_alloc(s))) { struct { uint32_t size_le; uint8_t id; uint16_t tag_le; } QEMU_PACKED out; - int len; + VirtQueueElement *elem = &v->elems[pdu->idx]; - BUG_ON(pdu->elem.out_num == 0 || pdu->elem.in_num == 0); + len = virtqueue_pop(vq, elem); + if (!len) { + pdu_free(pdu); + break; + } + + BUG_ON(elem->out_num == 0 || elem->in_num == 0); QEMU_BUILD_BUG_ON(sizeof out != 7); - len = iov_to_buf(pdu->elem.out_sg, pdu->elem.out_num, 0, + len = iov_to_buf(elem->out_sg, elem->out_num, 0, &out, sizeof out); BUG_ON(len != sizeof out); @@ -62,7 +70,6 @@ static void handle_9p_output(VirtIODevice *vdev, VirtQueue *vq) qemu_co_queue_init(&pdu->complete); pdu_submit(pdu); } - pdu_free(pdu); } static uint64_t virtio_9p_get_features(VirtIODevice *vdev, uint64_t features, @@ -76,14 +83,15 @@ static void virtio_9p_get_config(VirtIODevice *vdev, uint8_t *config) { int len; struct virtio_9p_config *cfg; - V9fsState *s = VIRTIO_9P(vdev); + V9fsVirtioState *v = VIRTIO_9P(vdev); + V9fsState *s = &v->state; len = strlen(s->tag); cfg = g_malloc0(sizeof(struct virtio_9p_config) + len); virtio_stw_p(vdev, &cfg->tag_len, len); /* We don't copy the terminating null to config space */ memcpy(cfg->tag, s->tag, len); - memcpy(config, cfg, s->config_size); + memcpy(config, cfg, v->config_size); g_free(cfg); } @@ -100,16 +108,17 @@ static int virtio_9p_load(QEMUFile *f, void *opaque, int version_id) static void virtio_9p_device_realize(DeviceState *dev, Error **errp) { VirtIODevice *vdev = VIRTIO_DEVICE(dev); - V9fsState *s = VIRTIO_9P(dev); + V9fsVirtioState *v = VIRTIO_9P(dev); + V9fsState *s = &v->state; if (v9fs_device_realize_common(s, errp)) { goto out; } - s->config_size = sizeof(struct virtio_9p_config) + strlen(s->fsconf.tag); - virtio_init(vdev, "virtio-9p", VIRTIO_ID_9P, s->config_size); - s->vq = virtio_add_queue(vdev, MAX_REQ, handle_9p_output); - register_savevm(dev, "virtio-9p", -1, 1, virtio_9p_save, virtio_9p_load, s); + v->config_size = sizeof(struct virtio_9p_config) + strlen(s->fsconf.tag); + virtio_init(vdev, "virtio-9p", VIRTIO_ID_9P, v->config_size); + v->vq = virtio_add_queue(vdev, MAX_REQ, handle_9p_output); + register_savevm(dev, "virtio-9p", -1, 1, virtio_9p_save, virtio_9p_load, v); out: return; @@ -118,44 +127,55 @@ out: static void virtio_9p_device_unrealize(DeviceState *dev, Error **errp) { VirtIODevice *vdev = VIRTIO_DEVICE(dev); - V9fsState *s = VIRTIO_9P(dev); + V9fsVirtioState *v = VIRTIO_9P(dev); + V9fsState *s = &v->state; virtio_cleanup(vdev); - unregister_savevm(dev, "virtio-9p", s); + unregister_savevm(dev, "virtio-9p", v); v9fs_device_unrealize_common(s, errp); } ssize_t virtio_pdu_vmarshal(V9fsPDU *pdu, size_t offset, const char *fmt, va_list ap) { - return v9fs_iov_vmarshal(pdu->elem.in_sg, pdu->elem.in_num, - offset, 1, fmt, ap); + V9fsState *s = pdu->s; + V9fsVirtioState *v = container_of(s, V9fsVirtioState, state); + VirtQueueElement *elem = &v->elems[pdu->idx]; + + return v9fs_iov_vmarshal(elem->in_sg, elem->in_num, offset, 1, fmt, ap); } ssize_t virtio_pdu_vunmarshal(V9fsPDU *pdu, size_t offset, const char *fmt, va_list ap) { - return v9fs_iov_vunmarshal(pdu->elem.out_sg, pdu->elem.out_num, - offset, 1, fmt, ap); + V9fsState *s = pdu->s; + V9fsVirtioState *v = container_of(s, V9fsVirtioState, state); + VirtQueueElement *elem = &v->elems[pdu->idx]; + + return v9fs_iov_vunmarshal(elem->out_sg, elem->out_num, offset, 1, fmt, ap); } void virtio_init_iov_from_pdu(V9fsPDU *pdu, struct iovec **piov, unsigned int *pniov, bool is_write) { + V9fsState *s = pdu->s; + V9fsVirtioState *v = container_of(s, V9fsVirtioState, state); + VirtQueueElement *elem = &v->elems[pdu->idx]; + if (is_write) { - *piov = pdu->elem.out_sg; - *pniov = pdu->elem.out_num; + *piov = elem->out_sg; + *pniov = elem->out_num; } else { - *piov = pdu->elem.in_sg; - *pniov = pdu->elem.in_num; + *piov = elem->in_sg; + *pniov = elem->in_num; } } /* virtio-9p device */ static Property virtio_9p_properties[] = { - DEFINE_PROP_STRING("mount_tag", V9fsState, fsconf.tag), - DEFINE_PROP_STRING("fsdev", V9fsState, fsconf.fsdev_id), + DEFINE_PROP_STRING("mount_tag", V9fsVirtioState, state.fsconf.tag), + DEFINE_PROP_STRING("fsdev", V9fsVirtioState, state.fsconf.fsdev_id), DEFINE_PROP_END_OF_LIST(), }; @@ -175,7 +195,7 @@ static void virtio_9p_class_init(ObjectClass *klass, void *data) static const TypeInfo virtio_device_info = { .name = TYPE_VIRTIO_9P, .parent = TYPE_VIRTIO_DEVICE, - .instance_size = sizeof(V9fsState), + .instance_size = sizeof(V9fsVirtioState), .class_init = virtio_9p_class_init, }; diff --git a/hw/9pfs/virtio-9p.h b/hw/9pfs/virtio-9p.h index 474ab94c0859..1cdf0a2d6529 100644 --- a/hw/9pfs/virtio-9p.h +++ b/hw/9pfs/virtio-9p.h @@ -5,6 +5,16 @@ #include "hw/virtio/virtio.h" #include "9p.h" +typedef struct V9fsVirtioState +{ + VirtIODevice parent_obj; + VirtQueue *vq; + size_t config_size; + V9fsPDU pdus[MAX_REQ]; + VirtQueueElement elems[MAX_REQ]; + V9fsState state; +} V9fsVirtioState; + extern void virtio_9p_push_and_notify(V9fsPDU *pdu); ssize_t virtio_pdu_vmarshal(V9fsPDU *pdu, size_t offset, @@ -16,6 +26,6 @@ void virtio_init_iov_from_pdu(V9fsPDU *pdu, struct iovec **piov, #define TYPE_VIRTIO_9P "virtio-9p-device" #define VIRTIO_9P(obj) \ - OBJECT_CHECK(V9fsState, (obj), TYPE_VIRTIO_9P) + OBJECT_CHECK(V9fsVirtioState, (obj), TYPE_VIRTIO_9P) #endif diff --git a/hw/s390x/virtio-ccw.h b/hw/s390x/virtio-ccw.h index 7ab8367baa9c..a526d2f2ae80 100644 --- a/hw/s390x/virtio-ccw.h +++ b/hw/s390x/virtio-ccw.h @@ -210,7 +210,7 @@ VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch); typedef struct V9fsCCWState { VirtioCcwDevice parent_obj; - V9fsState vdev; + V9fsVirtioState vdev; } V9fsCCWState; #endif /* CONFIG_VIRTFS */ diff --git a/hw/virtio/virtio-pci.h b/hw/virtio/virtio-pci.h index 7cf597461b94..e096e989c01d 100644 --- a/hw/virtio/virtio-pci.h +++ b/hw/virtio/virtio-pci.h @@ -242,7 +242,7 @@ struct VirtIONetPCI { typedef struct V9fsPCIState { VirtIOPCIProxy parent_obj; - V9fsState vdev; + V9fsVirtioState vdev; } V9fsPCIState; #endif