From patchwork Fri Mar 25 09:02:07 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhang Chen X-Patchwork-Id: 8669131 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 0562BC0553 for ; Fri, 25 Mar 2016 09:04:00 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 06CB020351 for ; Fri, 25 Mar 2016 09:03:59 +0000 (UTC) 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.kernel.org (Postfix) with ESMTPS id C28E9201F5 for ; Fri, 25 Mar 2016 09:03:57 +0000 (UTC) Received: from localhost ([::1]:54797 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ajNev-00087p-4D for patchwork-qemu-devel@patchwork.kernel.org; Fri, 25 Mar 2016 05:03:57 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56059) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ajNdd-0006EI-OF for qemu-devel@nongnu.org; Fri, 25 Mar 2016 05:02:39 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ajNdc-0007wb-0Y for qemu-devel@nongnu.org; Fri, 25 Mar 2016 05:02:37 -0400 Received: from [59.151.112.132] (port=21889 helo=heian.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ajNdb-0007rA-B0 for qemu-devel@nongnu.org; Fri, 25 Mar 2016 05:02:35 -0400 X-IronPort-AV: E=Sophos;i="5.22,518,1449504000"; d="scan'208";a="4963595" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 25 Mar 2016 17:02:10 +0800 Received: from G08CNEXCHPEKD02.g08.fujitsu.local (unknown [10.167.33.83]) by cn.fujitsu.com (Postfix) with ESMTP id 29772408D26A; Fri, 25 Mar 2016 17:02:06 +0800 (CST) Received: from G08FNSTD140215.g08.fujitsu.local (10.167.226.56) by G08CNEXCHPEKD02.g08.fujitsu.local (10.167.33.89) with Microsoft SMTP Server (TLS) id 14.3.279.2; Fri, 25 Mar 2016 17:02:05 +0800 From: Zhang Chen To: qemu devel , Jason Wang Date: Fri, 25 Mar 2016 17:02:07 +0800 Message-ID: <1458896529-7891-2-git-send-email-zhangchen.fnst@cn.fujitsu.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1458896529-7891-1-git-send-email-zhangchen.fnst@cn.fujitsu.com> References: <1458896529-7891-1-git-send-email-zhangchen.fnst@cn.fujitsu.com> MIME-Version: 1.0 X-Originating-IP: [10.167.226.56] X-yoursite-MailScanner-ID: 29772408D26A.AE8FE X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: zhangchen.fnst@cn.fujitsu.com X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 59.151.112.132 Cc: Li Zhijian , Gui jianfeng , "eddie.dong" , zhanghailiang , "Dr. David Alan Gilbert" , Zhang Chen , Yang Hongyang Subject: [Qemu-devel] [PATCH V1 1/3] colo-compare: introduce colo compare initlization 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+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP packet come from primary char indev will be send to outdev - packet come from secondary char dev will be drop Signed-off-by: Li Zhijian Signed-off-by: Zhang Chen Signed-off-by: Wen Congyang --- net/Makefile.objs | 1 + net/colo-compare.c | 344 +++++++++++++++++++++++++++++++++++++++++++++++++++++ vl.c | 3 +- 3 files changed, 347 insertions(+), 1 deletion(-) create mode 100644 net/colo-compare.c diff --git a/net/Makefile.objs b/net/Makefile.objs index b7c22fd..ba92f73 100644 --- a/net/Makefile.objs +++ b/net/Makefile.objs @@ -16,3 +16,4 @@ common-obj-$(CONFIG_NETMAP) += netmap.o common-obj-y += filter.o common-obj-y += filter-buffer.o common-obj-y += filter-mirror.o +common-obj-y += colo-compare.o diff --git a/net/colo-compare.c b/net/colo-compare.c new file mode 100644 index 0000000..62c66df --- /dev/null +++ b/net/colo-compare.c @@ -0,0 +1,344 @@ +/* + * Copyright (c) 2016 FUJITSU LIMITED + * Author: Zhang Chen + * + * This work is licensed under the terms of the GNU GPL, version 2 or + * later. See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "qemu-common.h" +#include "qapi/qmp/qerror.h" +#include "qemu/error-report.h" + +#include "net/net.h" +#include "net/vhost_net.h" +#include "qom/object_interfaces.h" +#include "qemu/iov.h" +#include "qom/object.h" +#include "qemu/typedefs.h" +#include "net/queue.h" +#include "sysemu/char.h" +#include "qemu/sockets.h" + +#define TYPE_COLO_COMPARE "colo-compare" +#define COLO_COMPARE(obj) \ + OBJECT_CHECK(CompareState, (obj), TYPE_COLO_COMPARE) + +#define COMPARE_READ_LEN_MAX NET_BUFSIZE + +static QTAILQ_HEAD(, CompareState) net_compares = + QTAILQ_HEAD_INITIALIZER(net_compares); + +typedef struct ReadState { + int state; /* 0 = getting length, 1 = getting data */ + unsigned int index; + unsigned int packet_len; + uint8_t buf[COMPARE_READ_LEN_MAX]; +} ReadState; + +typedef struct CompareState { + Object parent; + + char *pri_indev; + char *sec_indev; + char *outdev; + CharDriverState *chr_pri_in; + CharDriverState *chr_sec_in; + CharDriverState *chr_out; + QTAILQ_ENTRY(CompareState) next; + ReadState pri_rs; + ReadState sec_rs; +} CompareState; + +static int compare_chr_send(CharDriverState *out, const uint8_t *buf, int size) +{ + int ret = 0; + uint32_t len = htonl(size); + + if (!size) { + return 0; + } + + ret = qemu_chr_fe_write_all(out, (uint8_t *)&len, sizeof(len)); + if (ret != sizeof(len)) { + goto err; + } + + ret = qemu_chr_fe_write_all(out, (uint8_t *)buf, size); + if (ret != size) { + goto err; + } + + return 0; + +err: + return ret < 0 ? ret : -EIO; +} + +static int compare_chr_can_read(void *opaque) +{ + return COMPARE_READ_LEN_MAX; +} + +/* Returns + * 0: readstate is not ready + * 1: readstate is ready + * otherwise error occurs + */ +static int compare_chr_fill_rstate(ReadState *rs, const uint8_t *buf, int size) +{ + unsigned int l; + while (size > 0) { + /* reassemble a packet from the network */ + switch (rs->state) { /* 0 = getting length, 1 = getting data */ + case 0: + l = 4 - rs->index; + if (l > size) { + l = size; + } + memcpy(rs->buf + rs->index, buf, l); + buf += l; + size -= l; + rs->index += l; + if (rs->index == 4) { + /* got length */ + rs->packet_len = ntohl(*(uint32_t *)rs->buf); + rs->index = 0; + rs->state = 1; + } + break; + case 1: + l = rs->packet_len - rs->index; + if (l > size) { + l = size; + } + if (rs->index + l <= sizeof(rs->buf)) { + memcpy(rs->buf + rs->index, buf, l); + } else { + error_report("serious error: oversized packet received."); + rs->index = rs->state = 0; + return -1; + } + + rs->index += l; + buf += l; + size -= l; + if (rs->index >= rs->packet_len) { + rs->index = 0; + rs->state = 0; + return 1; + } + break; + } + } + return 0; +} + +static void compare_pri_chr_in(void *opaque, const uint8_t *buf, int size) +{ + CompareState *s = COLO_COMPARE(opaque); + int ret; + + ret = compare_chr_fill_rstate(&s->pri_rs, buf, size); + if (ret == 1) { + /* FIXME: enqueue to primary packet list */ + compare_chr_send(s->chr_out, buf, size); + } else if (ret == -1) { + qemu_chr_add_handlers(s->chr_pri_in, NULL, NULL, NULL, NULL); + } +} + +static void compare_sec_chr_in(void *opaque, const uint8_t *buf, int size) +{ + CompareState *s = COLO_COMPARE(opaque); + int ret; + + ret = compare_chr_fill_rstate(&s->sec_rs, buf, size); + if (ret == 1) { + /* TODO: enqueue to secondary packet list*/ + } else if (ret == -1) { + qemu_chr_add_handlers(s->chr_sec_in, NULL, NULL, NULL, NULL); + } +} + +static char *compare_get_pri_indev(Object *obj, Error **errp) +{ + CompareState *s = COLO_COMPARE(obj); + + return g_strdup(s->pri_indev); +} + +static void compare_set_pri_indev(Object *obj, const char *value, Error **errp) +{ + CompareState *s = COLO_COMPARE(obj); + + g_free(s->pri_indev); + s->pri_indev = g_strdup(value); +} + +static char *compare_get_sec_indev(Object *obj, Error **errp) +{ + CompareState *s = COLO_COMPARE(obj); + + return g_strdup(s->sec_indev); +} + +static void compare_set_sec_indev(Object *obj, const char *value, Error **errp) +{ + CompareState *s = COLO_COMPARE(obj); + + g_free(s->sec_indev); + s->sec_indev = g_strdup(value); +} + +static char *compare_get_outdev(Object *obj, Error **errp) +{ + CompareState *s = COLO_COMPARE(obj); + + return g_strdup(s->outdev); +} + +static void compare_set_outdev(Object *obj, const char *value, Error **errp) +{ + CompareState *s = COLO_COMPARE(obj); + + g_free(s->outdev); + s->outdev = g_strdup(value); +} + +static void colo_compare_complete(UserCreatable *uc, Error **errp) +{ + CompareState *s = COLO_COMPARE(uc); + + if (!s->pri_indev || !s->sec_indev || !s->outdev) { + error_setg(errp, "colo compare needs 'primary_in' ," + "'secondary_in','outdev' property set"); + return; + } else if (!strcmp(s->pri_indev, s->outdev) || + !strcmp(s->sec_indev, s->outdev) || + !strcmp(s->pri_indev, s->sec_indev)) { + error_setg(errp, "'indev' and 'outdev' could not be same " + "for compare module"); + return; + } + + s->chr_pri_in = qemu_chr_find(s->pri_indev); + if (s->chr_pri_in == NULL) { + error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, + "IN Device '%s' not found", s->pri_indev); + goto out; + } + + qemu_chr_fe_claim_no_fail(s->chr_pri_in); + qemu_chr_add_handlers(s->chr_pri_in, compare_chr_can_read, + compare_pri_chr_in, NULL, s); + + s->chr_sec_in = qemu_chr_find(s->sec_indev); + if (s->chr_sec_in == NULL) { + error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, + "IN Device '%s' not found", s->sec_indev); + goto out; + } + + qemu_chr_fe_claim_no_fail(s->chr_sec_in); + qemu_chr_add_handlers(s->chr_sec_in, compare_chr_can_read, + compare_sec_chr_in, NULL, s); + + s->chr_out = qemu_chr_find(s->outdev); + if (s->chr_out == NULL) { + error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, + "OUT Device '%s' not found", s->outdev); + goto out; + } + qemu_chr_fe_claim_no_fail(s->chr_out); + + QTAILQ_INSERT_TAIL(&net_compares, s, next); + + return; + +out: + if (s->chr_pri_in) { + qemu_chr_add_handlers(s->chr_pri_in, NULL, NULL, NULL, NULL); + qemu_chr_fe_release(s->chr_pri_in); + s->chr_pri_in = NULL; + } + if (s->chr_sec_in) { + qemu_chr_add_handlers(s->chr_sec_in, NULL, NULL, NULL, NULL); + qemu_chr_fe_release(s->chr_sec_in); + s->chr_pri_in = NULL; + } +} + +static void colo_compare_class_init(ObjectClass *oc, void *data) +{ + UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc); + + ucc->complete = colo_compare_complete; +} + +static void colo_compare_class_finalize(ObjectClass *oc, void *data) +{ + UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc); + CompareState *s = COLO_COMPARE(ucc); + + if (s->chr_pri_in) { + qemu_chr_add_handlers(s->chr_pri_in, NULL, NULL, NULL, NULL); + qemu_chr_fe_release(s->chr_pri_in); + } + if (s->chr_sec_in) { + qemu_chr_add_handlers(s->chr_sec_in, NULL, NULL, NULL, NULL); + qemu_chr_fe_release(s->chr_sec_in); + } + if (s->chr_out) { + qemu_chr_fe_release(s->chr_out); + } + + if (!QTAILQ_EMPTY(&net_compares)) { + QTAILQ_REMOVE(&net_compares, s, next); + } +} + +static void colo_compare_init(Object *obj) +{ + object_property_add_str(obj, "primary_in", + compare_get_pri_indev, compare_set_pri_indev, + NULL); + object_property_add_str(obj, "secondary_in", + compare_get_sec_indev, compare_set_sec_indev, + NULL); + object_property_add_str(obj, "outdev", + compare_get_outdev, compare_set_outdev, + NULL); +} + +static void colo_compare_finalize(Object *obj) +{ + CompareState *s = COLO_COMPARE(obj); + + g_free(s->pri_indev); + g_free(s->sec_indev); + g_free(s->outdev); +} + +static const TypeInfo colo_compare_info = { + .name = TYPE_COLO_COMPARE, + .parent = TYPE_OBJECT, + .instance_size = sizeof(CompareState), + .instance_init = colo_compare_init, + .instance_finalize = colo_compare_finalize, + .class_size = sizeof(CompareState), + .class_init = colo_compare_class_init, + .class_finalize = colo_compare_class_finalize, + .interfaces = (InterfaceInfo[]) { + { TYPE_USER_CREATABLE }, + { } + } +}; + +static void register_types(void) +{ + type_register_static(&colo_compare_info); +} + +type_init(register_types); diff --git a/vl.c b/vl.c index dc6e63a..70064ad 100644 --- a/vl.c +++ b/vl.c @@ -2842,7 +2842,8 @@ static bool object_create_initial(const char *type) if (g_str_equal(type, "filter-buffer") || g_str_equal(type, "filter-dump") || g_str_equal(type, "filter-mirror") || - g_str_equal(type, "filter-redirector")) { + g_str_equal(type, "filter-redirector") || + g_str_equal(type, "colo-compare")) { return false; }