From patchwork Mon Nov 28 21:27:22 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefano Stabellini X-Patchwork-Id: 9450475 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 4FA6B600CB for ; Mon, 28 Nov 2016 21:32:50 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3B5EC27FA9 for ; Mon, 28 Nov 2016 21:32:50 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3007D28068; Mon, 28 Nov 2016 21:32:50 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 8519527FA9 for ; Mon, 28 Nov 2016 21:32:49 +0000 (UTC) Received: from localhost ([::1]:33136 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cBTXc-0007EQ-Ff for patchwork-qemu-devel@patchwork.kernel.org; Mon, 28 Nov 2016 16:32:48 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59344) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cBTSY-0003Mq-1y for qemu-devel@nongnu.org; Mon, 28 Nov 2016 16:27:35 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cBTSV-0003N7-Fq for qemu-devel@nongnu.org; Mon, 28 Nov 2016 16:27:34 -0500 Received: from mail.kernel.org ([198.145.29.136]:37630) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cBTSV-0003MK-6M for qemu-devel@nongnu.org; Mon, 28 Nov 2016 16:27:31 -0500 Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 216C7201B9; Mon, 28 Nov 2016 21:27:29 +0000 (UTC) Received: from sstabellini-ThinkPad-X260.hsd1.ca.comcast.net (96-82-76-110-static.hfc.comcastbusiness.net [96.82.76.110]) (using TLSv1.2 with cipher AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id BD6ED201CE; Mon, 28 Nov 2016 21:27:27 +0000 (UTC) From: Stefano Stabellini To: aneesh.kumar@linux.vnet.ibm.com Date: Mon, 28 Nov 2016 13:27:22 -0800 Message-Id: <1480368444-4310-2-git-send-email-sstabellini@kernel.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1480368444-4310-1-git-send-email-sstabellini@kernel.org> References: <1480368444-4310-1-git-send-email-sstabellini@kernel.org> X-Virus-Scanned: ClamAV using ClamSMTP X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 198.145.29.136 Subject: [Qemu-devel] [PATCH v2 2/4] 9pfs: introduce transport specific callbacks 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: xen-devel@lists.xensource.com, anthony.perard@citrix.com, sstabellini@kernel.org, groug@kaod.org, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Don't call virtio functions from 9pfs generic code, use generic function callbacks instead. Signed-off-by: Stefano Stabellini Reviewed-by: Greg Kurz --- Changes in v2: - constify virtio_9p_transport and V9fsTransport - assert !s->transport. - code style --- hw/9pfs/9p.c | 8 ++++---- hw/9pfs/9p.h | 19 +++++++++++++++++++ hw/9pfs/virtio-9p-device.c | 24 +++++++++++++++++------- hw/9pfs/virtio-9p.h | 9 --------- 4 files changed, 40 insertions(+), 20 deletions(-) diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c index 05e950f..5a20a13 100644 --- a/hw/9pfs/9p.c +++ b/hw/9pfs/9p.c @@ -47,7 +47,7 @@ ssize_t pdu_marshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...) va_list ap; va_start(ap, fmt); - ret = virtio_pdu_vmarshal(pdu, offset, fmt, ap); + ret = pdu->s->transport->pdu_vmarshal(pdu, offset, fmt, ap); va_end(ap); return ret; @@ -59,7 +59,7 @@ ssize_t pdu_unmarshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...) va_list ap; va_start(ap, fmt); - ret = virtio_pdu_vunmarshal(pdu, offset, fmt, ap); + ret = pdu->s->transport->pdu_vunmarshal(pdu, offset, fmt, ap); va_end(ap); return ret; @@ -67,7 +67,7 @@ ssize_t pdu_unmarshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...) static void pdu_push_and_notify(V9fsPDU *pdu) { - virtio_9p_push_and_notify(pdu); + pdu->s->transport->push_and_notify(pdu); } static int omode_to_uflags(int8_t mode) @@ -1751,7 +1751,7 @@ static void v9fs_init_qiov_from_pdu(QEMUIOVector *qiov, V9fsPDU *pdu, struct iovec *iov; unsigned int niov; - virtio_init_iov_from_pdu(pdu, &iov, &niov, is_write); + pdu->s->transport->init_iov_from_pdu(pdu, &iov, &niov, is_write); qemu_iovec_init_external(&elem, iov, niov); qemu_iovec_init(qiov, niov); diff --git a/hw/9pfs/9p.h b/hw/9pfs/9p.h index 07cee01..c8c9aa8 100644 --- a/hw/9pfs/9p.h +++ b/hw/9pfs/9p.h @@ -230,6 +230,7 @@ typedef struct V9fsState enum p9_proto_version proto_version; int32_t msize; V9fsPDU pdus[MAX_REQ]; + const struct V9fsTransport *transport; /* * lock ensuring atomic path update * on rename. @@ -343,4 +344,22 @@ void pdu_free(V9fsPDU *pdu); void pdu_submit(V9fsPDU *pdu); void v9fs_reset(V9fsState *s); +struct V9fsTransport { + ssize_t (*pdu_vmarshal)(V9fsPDU *pdu, size_t offset, const char *fmt, + va_list ap); + ssize_t (*pdu_vunmarshal)(V9fsPDU *pdu, size_t offset, const char *fmt, + va_list ap); + void (*init_iov_from_pdu)(V9fsPDU *pdu, struct iovec **piov, + unsigned int *pniov, bool is_write); + void (*push_and_notify)(V9fsPDU *pdu); +}; + +static inline int v9fs_register_transport(V9fsState *s, + const struct V9fsTransport *t) +{ + assert(!s->transport); + s->transport = t; + return 0; +} + #endif diff --git a/hw/9pfs/virtio-9p-device.c b/hw/9pfs/virtio-9p-device.c index 1782e4a..273425b 100644 --- a/hw/9pfs/virtio-9p-device.c +++ b/hw/9pfs/virtio-9p-device.c @@ -20,7 +20,9 @@ #include "hw/virtio/virtio-access.h" #include "qemu/iov.h" -void virtio_9p_push_and_notify(V9fsPDU *pdu) +static const struct V9fsTransport virtio_9p_transport; + +static void virtio_9p_push_and_notify(V9fsPDU *pdu) { V9fsState *s = pdu->s; V9fsVirtioState *v = container_of(s, V9fsVirtioState, state); @@ -126,6 +128,7 @@ static void virtio_9p_device_realize(DeviceState *dev, Error **errp) 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); + v9fs_register_transport(s, &virtio_9p_transport); out: return; @@ -148,8 +151,8 @@ static void virtio_9p_reset(VirtIODevice *vdev) v9fs_reset(&v->state); } -ssize_t virtio_pdu_vmarshal(V9fsPDU *pdu, size_t offset, - const char *fmt, va_list ap) +static ssize_t virtio_pdu_vmarshal(V9fsPDU *pdu, size_t offset, + const char *fmt, va_list ap) { V9fsState *s = pdu->s; V9fsVirtioState *v = container_of(s, V9fsVirtioState, state); @@ -158,8 +161,8 @@ ssize_t virtio_pdu_vmarshal(V9fsPDU *pdu, size_t offset, 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) +static ssize_t virtio_pdu_vunmarshal(V9fsPDU *pdu, size_t offset, + const char *fmt, va_list ap) { V9fsState *s = pdu->s; V9fsVirtioState *v = container_of(s, V9fsVirtioState, state); @@ -168,8 +171,8 @@ ssize_t virtio_pdu_vunmarshal(V9fsPDU *pdu, size_t offset, 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) +static 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); @@ -184,6 +187,13 @@ void virtio_init_iov_from_pdu(V9fsPDU *pdu, struct iovec **piov, } } +static const struct V9fsTransport virtio_9p_transport = { + .pdu_vmarshal = virtio_pdu_vmarshal, + .pdu_vunmarshal = virtio_pdu_vunmarshal, + .init_iov_from_pdu = virtio_init_iov_from_pdu, + .push_and_notify = virtio_9p_push_and_notify, +}; + /* virtio-9p device */ static const VMStateDescription vmstate_virtio_9p = { diff --git a/hw/9pfs/virtio-9p.h b/hw/9pfs/virtio-9p.h index 52c4b9d..e763da2c 100644 --- a/hw/9pfs/virtio-9p.h +++ b/hw/9pfs/virtio-9p.h @@ -14,15 +14,6 @@ typedef struct V9fsVirtioState V9fsState state; } V9fsVirtioState; -void virtio_9p_push_and_notify(V9fsPDU *pdu); - -ssize_t virtio_pdu_vmarshal(V9fsPDU *pdu, size_t offset, - const char *fmt, va_list ap); -ssize_t virtio_pdu_vunmarshal(V9fsPDU *pdu, size_t offset, - const char *fmt, va_list ap); -void virtio_init_iov_from_pdu(V9fsPDU *pdu, struct iovec **piov, - unsigned int *pniov, bool is_write); - #define TYPE_VIRTIO_9P "virtio-9p-device" #define VIRTIO_9P(obj) \ OBJECT_CHECK(V9fsVirtioState, (obj), TYPE_VIRTIO_9P)