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Tsirkin" , kraxel@redhat.com, Fam Zheng , Albert Esteve , cohuck@redhat.com Subject: [PATCH v2 4/4] vhost-user: refactor send_resp code Date: Thu, 18 May 2023 14:02:58 +0200 Message-Id: <20230518120258.1394135-5-aesteve@redhat.com> In-Reply-To: <20230518120258.1394135-1-aesteve@redhat.com> References: <20230518120258.1394135-1-aesteve@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.1 on 10.11.54.3 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=aesteve@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1684411442771100001 Content-Type: text/plain; charset="utf-8" Refactor code to send response message so that all common parts both for the common REPLY_ACK case, and other data responses, can call it and avoid code repetition. Signed-off-by: Albert Esteve --- hw/virtio/vhost-user.c | 52 +++++++++++++++++++----------------------- 1 file changed, 24 insertions(+), 28 deletions(-) diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c index d9bcaafebf..c82ba9e59f 100644 --- a/hw/virtio/vhost-user.c +++ b/hw/virtio/vhost-user.c @@ -1628,28 +1628,36 @@ static int vhost_user_backend_handle_shared_object(= VhostUserShared *object) return 0; } =20 -static bool -vhost_user_backend_send_dmabuf_fd(QIOChannel *ioc, VhostUserHeader *hdr, - VhostUserPayload *payload) +static bool vhost_user_send_resp(QIOChannel *ioc, VhostUserHeader *hdr, + VhostUserPayload *payload) { Error *local_err =3D NULL; struct iovec iov[2]; - if (hdr->flags & VHOST_USER_NEED_REPLY_MASK) { - hdr->flags &=3D ~VHOST_USER_NEED_REPLY_MASK; - hdr->flags |=3D VHOST_USER_REPLY_MASK; + hdr->flags &=3D ~VHOST_USER_NEED_REPLY_MASK; + hdr->flags |=3D VHOST_USER_REPLY_MASK; =20 - hdr->size =3D sizeof(payload->object); + iov[0].iov_base =3D hdr; + iov[0].iov_len =3D VHOST_USER_HDR_SIZE; + iov[1].iov_base =3D payload; + iov[1].iov_len =3D hdr->size; + + if (qio_channel_writev_all(ioc, iov, ARRAY_SIZE(iov), &local_err)) { + error_report_err(local_err); + return false; + } =20 - iov[0].iov_base =3D hdr; - iov[0].iov_len =3D VHOST_USER_HDR_SIZE; - iov[1].iov_base =3D payload; - iov[1].iov_len =3D hdr->size; + return true; +} =20 - if (qio_channel_writev_all(ioc, iov, ARRAY_SIZE(iov), &local_err))= { - error_report_err(local_err); - return false; - } +static bool +vhost_user_backend_send_dmabuf_fd(QIOChannel *ioc, VhostUserHeader *hdr, + VhostUserPayload *payload) +{ + if (hdr->flags & VHOST_USER_NEED_REPLY_MASK) { + hdr->size =3D sizeof(payload->object); + return vhost_user_send_resp(ioc, hdr, payload); } + return true; } =20 @@ -1726,22 +1734,10 @@ static gboolean slave_read(QIOChannel *ioc, GIOCond= ition condition, * directly in their request handlers. */ if (hdr.flags & VHOST_USER_NEED_REPLY_MASK) { - struct iovec iovec[2]; - - - hdr.flags &=3D ~VHOST_USER_NEED_REPLY_MASK; - hdr.flags |=3D VHOST_USER_REPLY_MASK; - payload.u64 =3D !!ret; hdr.size =3D sizeof(payload.u64); =20 - iovec[0].iov_base =3D &hdr; - iovec[0].iov_len =3D VHOST_USER_HDR_SIZE; - iovec[1].iov_base =3D &payload; - iovec[1].iov_len =3D hdr.size; - - if (qio_channel_writev_all(ioc, iovec, ARRAY_SIZE(iovec), &local_e= rr)) { - error_report_err(local_err); + if (!vhost_user_send_resp(ioc, &hdr, &payload)) { goto err; } } --=20 2.40.0