From patchwork Fri Jul 15 11:32:21 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhang Chen X-Patchwork-Id: 648787 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 3rrVyP5zThz9s4x for ; Fri, 15 Jul 2016 21:41:17 +1000 (AEST) Received: from localhost ([::1]:60012 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bO1UZ-0001T7-Qk for incoming@patchwork.ozlabs.org; Fri, 15 Jul 2016 07:41:15 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57351) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bO1Lf-0006cs-H4 for qemu-devel@nongnu.org; Fri, 15 Jul 2016 07:32:05 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bO1Ld-0005JQ-Ty for qemu-devel@nongnu.org; Fri, 15 Jul 2016 07:32:03 -0400 Received: from [59.151.112.132] (port=51941 helo=heian.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bO1Lc-000588-Kw for qemu-devel@nongnu.org; Fri, 15 Jul 2016 07:32:01 -0400 X-IronPort-AV: E=Sophos;i="5.22,518,1449504000"; d="scan'208";a="8753093" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 15 Jul 2016 19:31:20 +0800 Received: from G08CNEXCHPEKD02.g08.fujitsu.local (unknown [10.167.33.83]) by cn.fujitsu.com (Postfix) with ESMTP id 2FE9F498F58F; Fri, 15 Jul 2016 19:31:20 +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, 15 Jul 2016 19:31:18 +0800 From: Zhang Chen To: qemu devel , Jason Wang Date: Fri, 15 Jul 2016 19:32:21 +0800 Message-ID: <1468582345-29399-3-git-send-email-zhangchen.fnst@cn.fujitsu.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1468582345-29399-1-git-send-email-zhangchen.fnst@cn.fujitsu.com> References: <1468582345-29399-1-git-send-email-zhangchen.fnst@cn.fujitsu.com> MIME-Version: 1.0 X-Originating-IP: [10.167.226.56] X-yoursite-MailScanner-ID: 2FE9F498F58F.A1D6A 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 Subject: [Qemu-devel] [RFC PATCH V6 2/6] colo-base: add colo-base to define and handle packet 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: Li Zhijian , "eddie . dong" , "Dr . David Alan Gilbert" , Zhang Chen , zhanghailiang Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" COLO-base used by colo-compare and filter-rewriter. this can share common data structure like:net packet, and share other functions. Signed-off-by: Zhang Chen Signed-off-by: Li Zhijian Signed-off-by: Wen Congyang --- net/Makefile.objs | 1 + net/colo-base.c | 74 +++++++++++++++++++++++++++++++++ net/colo-base.h | 38 +++++++++++++++++ net/colo-compare.c | 119 ++++++++++++++++++++++++++++++++++++++++++++++++++++- trace-events | 3 ++ 5 files changed, 233 insertions(+), 2 deletions(-) create mode 100644 net/colo-base.c create mode 100644 net/colo-base.h diff --git a/net/Makefile.objs b/net/Makefile.objs index ba92f73..119589f 100644 --- a/net/Makefile.objs +++ b/net/Makefile.objs @@ -17,3 +17,4 @@ common-obj-y += filter.o common-obj-y += filter-buffer.o common-obj-y += filter-mirror.o common-obj-y += colo-compare.o +common-obj-y += colo-base.o diff --git a/net/colo-base.c b/net/colo-base.c new file mode 100644 index 0000000..f5d5de9 --- /dev/null +++ b/net/colo-base.c @@ -0,0 +1,74 @@ +/* + * COarse-grain LOck-stepping Virtual Machines for Non-stop Service (COLO) + * (a.k.a. Fault Tolerance or Continuous Replication) + * + * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD. + * Copyright (c) 2016 FUJITSU LIMITED + * Copyright (c) 2016 Intel Corporation + * + * 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/error-report.h" +#include "net/colo-base.h" + +int parse_packet_early(Packet *pkt) +{ + int network_length; + uint8_t *data = pkt->data; + uint16_t l3_proto; + ssize_t l2hdr_len = eth_get_l2_hdr_length(data); + + if (pkt->size < ETH_HLEN) { + error_report("pkt->size < ETH_HLEN"); + return 1; + } + pkt->network_layer = data + ETH_HLEN; + l3_proto = eth_get_l3_proto(data, l2hdr_len); + if (l3_proto != ETH_P_IP) { + return 1; + } + + network_length = pkt->ip->ip_hl * 4; + if (pkt->size < ETH_HLEN + network_length) { + error_report("pkt->size < network_layer + network_length"); + return 1; + } + pkt->transport_layer = pkt->network_layer + network_length; + if (!pkt->transport_layer) { + error_report("pkt->transport_layer is valid"); + return 1; + } + + return 0; +} + +Packet *packet_new(const void *data, int size) +{ + Packet *pkt = g_slice_new(Packet); + + pkt->data = g_memdup(data, size); + pkt->size = size; + + return pkt; +} + +void packet_destroy(void *opaque, void *user_data) +{ + Packet *pkt = opaque; + + g_free(pkt->data); + g_slice_free(Packet, pkt); +} + +/* + * Clear hashtable, stop this hash growing really huge + */ +void connection_hashtable_reset(GHashTable *connection_track_table) +{ + g_hash_table_remove_all(connection_track_table); +} diff --git a/net/colo-base.h b/net/colo-base.h new file mode 100644 index 0000000..48835e7 --- /dev/null +++ b/net/colo-base.h @@ -0,0 +1,38 @@ +/* + * COarse-grain LOck-stepping Virtual Machines for Non-stop Service (COLO) + * (a.k.a. Fault Tolerance or Continuous Replication) + * + * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD. + * Copyright (c) 2016 FUJITSU LIMITED + * Copyright (c) 2016 Intel Corporation + * + * 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. + */ + +#ifndef QEMU_COLO_BASE_H +#define QEMU_COLO_BASE_H + +#include "slirp/slirp.h" +#include "qemu/jhash.h" + +#define HASHTABLE_MAX_SIZE 16384 + +typedef struct Packet { + void *data; + union { + uint8_t *network_layer; + struct ip *ip; + }; + uint8_t *transport_layer; + int size; +} Packet; + +int parse_packet_early(Packet *pkt); +void connection_hashtable_reset(GHashTable *connection_track_table); +Packet *packet_new(const void *data, int size); +void packet_destroy(void *opaque, void *user_data); + +#endif /* QEMU_COLO_BASE_H */ diff --git a/net/colo-compare.c b/net/colo-compare.c index 0402958..7c52cc8 100644 --- a/net/colo-compare.c +++ b/net/colo-compare.c @@ -27,13 +27,38 @@ #include "sysemu/char.h" #include "qemu/sockets.h" #include "qapi-visit.h" +#include "net/colo-base.h" +#include "trace.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 +#define MAX_QUEUE_SIZE 1024 +/* + + CompareState ++ + | | + +---------------+ +---------------+ +---------------+ + |conn list +--->conn +--------->conn | + +---------------+ +---------------+ +---------------+ + | | | | | | + +---------------+ +---v----+ +---v----+ +---v----+ +---v----+ + |primary | |secondary |primary | |secondary + |packet | |packet + |packet | |packet + + +--------+ +--------+ +--------+ +--------+ + | | | | + +---v----+ +---v----+ +---v----+ +---v----+ + |primary | |secondary |primary | |secondary + |packet | |packet + |packet | |packet + + +--------+ +--------+ +--------+ +--------+ + | | | | + +---v----+ +---v----+ +---v----+ +---v----+ + |primary | |secondary |primary | |secondary + |packet | |packet + |packet | |packet + + +--------+ +--------+ +--------+ +--------+ +*/ typedef struct CompareState { Object parent; @@ -46,12 +71,89 @@ typedef struct CompareState { QTAILQ_ENTRY(CompareState) next; SocketReadState pri_rs; SocketReadState sec_rs; + + /* hashtable to save connection */ + GHashTable *connection_track_table; + /* to save unprocessed_connections */ + GQueue unprocessed_connections; + /* proxy current hash size */ + uint32_t hashtable_size; } CompareState; typedef struct CompareClass { ObjectClass parent_class; } CompareClass; +enum { + PRIMARY_IN = 0, + SECONDARY_IN, +}; + +static int compare_chr_send(CharDriverState *out, + const uint8_t *buf, + uint32_t size); + +/* + * Return 0 on success, if return -1 means the pkt + * is unsupported(arp and ipv6) and will be sent later + */ +static int packet_enqueue(CompareState *s, int mode) +{ + Packet *pkt = NULL; + + if (mode == PRIMARY_IN) { + pkt = packet_new(s->pri_rs.buf, s->pri_rs.packet_len); + } else { + pkt = packet_new(s->sec_rs.buf, s->sec_rs.packet_len); + } + + if (parse_packet_early(pkt)) { + packet_destroy(pkt, NULL); + pkt = NULL; + return -1; + } + /* TODO: get connection key from pkt */ + + /* + * TODO: use connection key get conn from + * connection_track_table + */ + + /* + * TODO: insert pkt to it's conn->primary_list + * or conn->secondary_list + */ + + return 0; +} + +static int compare_chr_send(CharDriverState *out, + const uint8_t *buf, + uint32_t 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 char *compare_get_pri_indev(Object *obj, Error **errp) { CompareState *s = COLO_COMPARE(obj); @@ -99,12 +201,21 @@ static void compare_set_outdev(Object *obj, const char *value, Error **errp) static void compare_pri_rs_finalize(SocketReadState *pri_rs) { - /* if packet_enqueue pri pkt failed we will send unsupported packet */ + CompareState *s = container_of(pri_rs, CompareState, pri_rs); + + if (packet_enqueue(s, PRIMARY_IN)) { + trace_colo_compare_main("primary: unsupported packet in"); + compare_chr_send(s->chr_out, pri_rs->buf, pri_rs->packet_len); + } } static void compare_sec_rs_finalize(SocketReadState *sec_rs) { - /* if packet_enqueue sec pkt failed we will notify trace */ + CompareState *s = container_of(sec_rs, CompareState, sec_rs); + + if (packet_enqueue(s, SECONDARY_IN)) { + trace_colo_compare_main("secondary: unsupported packet in"); + } } /* @@ -156,6 +267,10 @@ static void colo_compare_complete(UserCreatable *uc, Error **errp) net_socket_rs_init(&s->pri_rs, compare_pri_rs_finalize); net_socket_rs_init(&s->sec_rs, compare_sec_rs_finalize); + s->hashtable_size = 0; + + /* use g_hash_table_new_full() to new a hashtable */ + return; } diff --git a/trace-events b/trace-events index ca7211b..703de1a 100644 --- a/trace-events +++ b/trace-events @@ -1916,3 +1916,6 @@ aspeed_vic_update_fiq(int flags) "Raising FIQ: %d" aspeed_vic_update_irq(int flags) "Raising IRQ: %d" aspeed_vic_read(uint64_t offset, unsigned size, uint32_t value) "From 0x%" PRIx64 " of size %u: 0x%" PRIx32 aspeed_vic_write(uint64_t offset, unsigned size, uint32_t data) "To 0x%" PRIx64 " of size %u: 0x%" PRIx32 + +# net/colo-compare.c +colo_compare_main(const char *chr) ": %s"