Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1 | /* |
| 2 | * COarse-grain LOck-stepping Virtual Machines for Non-stop Service (COLO) |
| 3 | * (a.k.a. Fault Tolerance or Continuous Replication) |
| 4 | * |
| 5 | * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD. |
| 6 | * Copyright (c) 2016 FUJITSU LIMITED |
| 7 | * Copyright (c) 2016 Intel Corporation |
| 8 | * |
| 9 | * Author: Zhang Chen <zhangchen.fnst@cn.fujitsu.com> |
| 10 | * |
| 11 | * This work is licensed under the terms of the GNU GPL, version 2 or |
| 12 | * later. See the COPYING file in the top-level directory. |
| 13 | */ |
| 14 | |
| 15 | #include "qemu/osdep.h" |
Markus Armbruster | a8d2532 | 2019-05-23 16:35:08 +0200 | [diff] [blame] | 16 | #include "qemu-common.h" |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 17 | #include "qemu/error-report.h" |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 18 | #include "trace.h" |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 19 | #include "qapi/error.h" |
| 20 | #include "net/net.h" |
Zhang Chen | f4b6183 | 2016-09-27 10:22:31 +0800 | [diff] [blame] | 21 | #include "net/eth.h" |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 22 | #include "qom/object_interfaces.h" |
| 23 | #include "qemu/iov.h" |
| 24 | #include "qom/object.h" |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 25 | #include "net/queue.h" |
Marc-André Lureau | 4d43a60 | 2017-01-26 18:26:44 +0400 | [diff] [blame] | 26 | #include "chardev/char-fe.h" |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 27 | #include "qemu/sockets.h" |
Michael S. Tsirkin | f27f01d | 2018-05-03 22:50:56 +0300 | [diff] [blame] | 28 | #include "colo.h" |
Wang Yong | dd321ec | 2017-08-29 15:22:38 +0800 | [diff] [blame] | 29 | #include "sysemu/iothread.h" |
Zhang Chen | 0ffcece | 2018-09-03 12:38:43 +0800 | [diff] [blame] | 30 | #include "net/colo-compare.h" |
| 31 | #include "migration/colo.h" |
Zhang Chen | dccd031 | 2018-09-03 12:38:44 +0800 | [diff] [blame] | 32 | #include "migration/migration.h" |
Marc-André Lureau | e05ae1d | 2018-11-14 16:36:40 +0400 | [diff] [blame] | 33 | #include "util.h" |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 34 | |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 35 | #include "block/aio-wait.h" |
| 36 | #include "qemu/coroutine.h" |
| 37 | |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 38 | #define TYPE_COLO_COMPARE "colo-compare" |
| 39 | #define COLO_COMPARE(obj) \ |
| 40 | OBJECT_CHECK(CompareState, (obj), TYPE_COLO_COMPARE) |
| 41 | |
Zhang Chen | 0ffcece | 2018-09-03 12:38:43 +0800 | [diff] [blame] | 42 | static QTAILQ_HEAD(, CompareState) net_compares = |
| 43 | QTAILQ_HEAD_INITIALIZER(net_compares); |
| 44 | |
Zhang Chen | dccd031 | 2018-09-03 12:38:44 +0800 | [diff] [blame] | 45 | static NotifierList colo_compare_notifiers = |
| 46 | NOTIFIER_LIST_INITIALIZER(colo_compare_notifiers); |
| 47 | |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 48 | #define COMPARE_READ_LEN_MAX NET_BUFSIZE |
Zhang Chen | b6540d4 | 2016-09-27 10:22:29 +0800 | [diff] [blame] | 49 | #define MAX_QUEUE_SIZE 1024 |
| 50 | |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 51 | #define COLO_COMPARE_FREE_PRIMARY 0x01 |
| 52 | #define COLO_COMPARE_FREE_SECONDARY 0x02 |
| 53 | |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 54 | #define REGULAR_PACKET_CHECK_MS 3000 |
Zhang Chen | 9cc43c9 | 2020-03-18 16:23:19 +0800 | [diff] [blame] | 55 | #define DEFAULT_TIME_OUT_MS 3000 |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 56 | |
Lukas Straub | 45942b7 | 2020-05-22 15:53:55 +0800 | [diff] [blame] | 57 | static QemuMutex colo_compare_mutex; |
| 58 | static bool colo_compare_active; |
Zhang Chen | 0ffcece | 2018-09-03 12:38:43 +0800 | [diff] [blame] | 59 | static QemuMutex event_mtx; |
| 60 | static QemuCond event_complete_cond; |
| 61 | static int event_unhandled_count; |
| 62 | |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 63 | /* |
Zhang Chen | 61c5f46 | 2017-09-05 14:31:06 +0800 | [diff] [blame] | 64 | * + CompareState ++ |
| 65 | * | | |
| 66 | * +---------------+ +---------------+ +---------------+ |
| 67 | * | conn list + - > conn + ------- > conn + -- > ...... |
| 68 | * +---------------+ +---------------+ +---------------+ |
| 69 | * | | | | | | |
| 70 | * +---------------+ +---v----+ +---v----+ +---v----+ +---v----+ |
| 71 | * |primary | |secondary |primary | |secondary |
| 72 | * |packet | |packet + |packet | |packet + |
| 73 | * +--------+ +--------+ +--------+ +--------+ |
| 74 | * | | | | |
| 75 | * +---v----+ +---v----+ +---v----+ +---v----+ |
| 76 | * |primary | |secondary |primary | |secondary |
| 77 | * |packet | |packet + |packet | |packet + |
| 78 | * +--------+ +--------+ +--------+ +--------+ |
| 79 | * | | | | |
| 80 | * +---v----+ +---v----+ +---v----+ +---v----+ |
| 81 | * |primary | |secondary |primary | |secondary |
| 82 | * |packet | |packet + |packet | |packet + |
| 83 | * +--------+ +--------+ +--------+ +--------+ |
| 84 | */ |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 85 | |
| 86 | typedef struct SendCo { |
| 87 | Coroutine *co; |
| 88 | struct CompareState *s; |
| 89 | CharBackend *chr; |
| 90 | GQueue send_list; |
| 91 | bool notify_remote_frame; |
| 92 | bool done; |
| 93 | int ret; |
| 94 | } SendCo; |
| 95 | |
| 96 | typedef struct SendEntry { |
| 97 | uint32_t size; |
| 98 | uint32_t vnet_hdr_len; |
| 99 | uint8_t *buf; |
| 100 | } SendEntry; |
| 101 | |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 102 | typedef struct CompareState { |
| 103 | Object parent; |
| 104 | |
| 105 | char *pri_indev; |
| 106 | char *sec_indev; |
| 107 | char *outdev; |
Zhang Chen | cf6af76 | 2019-06-10 00:44:29 +0800 | [diff] [blame] | 108 | char *notify_dev; |
Marc-André Lureau | 32a6ebe | 2016-10-22 12:52:52 +0300 | [diff] [blame] | 109 | CharBackend chr_pri_in; |
| 110 | CharBackend chr_sec_in; |
| 111 | CharBackend chr_out; |
Zhang Chen | 13025fe | 2019-06-10 00:44:30 +0800 | [diff] [blame] | 112 | CharBackend chr_notify_dev; |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 113 | SocketReadState pri_rs; |
| 114 | SocketReadState sec_rs; |
Zhang Chen | 13025fe | 2019-06-10 00:44:30 +0800 | [diff] [blame] | 115 | SocketReadState notify_rs; |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 116 | SendCo out_sendco; |
| 117 | SendCo notify_sendco; |
Zhang Chen | aa3a703 | 2017-07-04 14:53:52 +0800 | [diff] [blame] | 118 | bool vnet_hdr; |
Zhang Chen | 9cc43c9 | 2020-03-18 16:23:19 +0800 | [diff] [blame] | 119 | uint32_t compare_timeout; |
Zhang Chen | cca35ac | 2020-03-18 16:23:20 +0800 | [diff] [blame] | 120 | uint32_t expired_scan_cycle; |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 121 | |
Zhang Chen | 61c5f46 | 2017-09-05 14:31:06 +0800 | [diff] [blame] | 122 | /* |
| 123 | * Record the connection that through the NIC |
| 124 | * Element type: Connection |
Zhang Chen | b6540d4 | 2016-09-27 10:22:29 +0800 | [diff] [blame] | 125 | */ |
| 126 | GQueue conn_list; |
Zhang Chen | 61c5f46 | 2017-09-05 14:31:06 +0800 | [diff] [blame] | 127 | /* Record the connection without repetition */ |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 128 | GHashTable *connection_track_table; |
zhanghailiang | dfd917a | 2017-02-17 10:53:12 +0800 | [diff] [blame] | 129 | |
Wang Yong | dd321ec | 2017-08-29 15:22:38 +0800 | [diff] [blame] | 130 | IOThread *iothread; |
zhanghailiang | b43decb | 2017-02-17 10:53:14 +0800 | [diff] [blame] | 131 | GMainContext *worker_context; |
Wang Yong | dd321ec | 2017-08-29 15:22:38 +0800 | [diff] [blame] | 132 | QEMUTimer *packet_check_timer; |
Zhang Chen | 0ffcece | 2018-09-03 12:38:43 +0800 | [diff] [blame] | 133 | |
| 134 | QEMUBH *event_bh; |
| 135 | enum colo_event event; |
| 136 | |
| 137 | QTAILQ_ENTRY(CompareState) next; |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 138 | } CompareState; |
| 139 | |
| 140 | typedef struct CompareClass { |
| 141 | ObjectClass parent_class; |
| 142 | } CompareClass; |
| 143 | |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 144 | enum { |
| 145 | PRIMARY_IN = 0, |
| 146 | SECONDARY_IN, |
| 147 | }; |
| 148 | |
Derek Su | bdadbb0 | 2020-05-22 15:53:57 +0800 | [diff] [blame] | 149 | static const char *colo_mode[] = { |
| 150 | [PRIMARY_IN] = "primary", |
| 151 | [SECONDARY_IN] = "secondary", |
| 152 | }; |
Zhang Chen | 24525e9 | 2018-09-03 12:38:57 +0800 | [diff] [blame] | 153 | |
Zhang Chen | 3037e7a | 2017-07-04 14:53:51 +0800 | [diff] [blame] | 154 | static int compare_chr_send(CompareState *s, |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 155 | uint8_t *buf, |
Zhang Chen | aa3a703 | 2017-07-04 14:53:52 +0800 | [diff] [blame] | 156 | uint32_t size, |
Zhang Chen | 30685c0 | 2019-06-10 00:44:31 +0800 | [diff] [blame] | 157 | uint32_t vnet_hdr_len, |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 158 | bool notify_remote_frame, |
| 159 | bool zero_copy); |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 160 | |
Zhang Chen | f77bed1 | 2019-07-23 01:18:28 +0800 | [diff] [blame] | 161 | static bool packet_matches_str(const char *str, |
| 162 | const uint8_t *buf, |
| 163 | uint32_t packet_len) |
| 164 | { |
| 165 | if (packet_len != strlen(str)) { |
| 166 | return false; |
| 167 | } |
| 168 | |
| 169 | return !memcmp(str, buf, strlen(str)); |
| 170 | } |
| 171 | |
Zhang Chen | 1d09f70 | 2019-06-10 00:44:32 +0800 | [diff] [blame] | 172 | static void notify_remote_frame(CompareState *s) |
| 173 | { |
| 174 | char msg[] = "DO_CHECKPOINT"; |
| 175 | int ret = 0; |
| 176 | |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 177 | ret = compare_chr_send(s, (uint8_t *)msg, strlen(msg), 0, true, false); |
Zhang Chen | 1d09f70 | 2019-06-10 00:44:32 +0800 | [diff] [blame] | 178 | if (ret < 0) { |
| 179 | error_report("Notify Xen COLO-frame failed"); |
| 180 | } |
| 181 | } |
| 182 | |
| 183 | static void colo_compare_inconsistency_notify(CompareState *s) |
| 184 | { |
| 185 | if (s->notify_dev) { |
| 186 | notify_remote_frame(s); |
| 187 | } else { |
| 188 | notifier_list_notify(&colo_compare_notifiers, |
| 189 | migrate_get_current()); |
| 190 | } |
| 191 | } |
| 192 | |
Zhang Chen | a935cc3 | 2017-01-24 16:53:46 +0800 | [diff] [blame] | 193 | static gint seq_sorter(Packet *a, Packet *b, gpointer data) |
| 194 | { |
Marc-André Lureau | e05ae1d | 2018-11-14 16:36:40 +0400 | [diff] [blame] | 195 | struct tcp_hdr *atcp, *btcp; |
Zhang Chen | a935cc3 | 2017-01-24 16:53:46 +0800 | [diff] [blame] | 196 | |
Marc-André Lureau | e05ae1d | 2018-11-14 16:36:40 +0400 | [diff] [blame] | 197 | atcp = (struct tcp_hdr *)(a->transport_header); |
| 198 | btcp = (struct tcp_hdr *)(b->transport_header); |
Zhang Chen | a935cc3 | 2017-01-24 16:53:46 +0800 | [diff] [blame] | 199 | return ntohl(atcp->th_seq) - ntohl(btcp->th_seq); |
| 200 | } |
| 201 | |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 202 | static void fill_pkt_tcp_info(void *data, uint32_t *max_ack) |
| 203 | { |
| 204 | Packet *pkt = data; |
Marc-André Lureau | e05ae1d | 2018-11-14 16:36:40 +0400 | [diff] [blame] | 205 | struct tcp_hdr *tcphd; |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 206 | |
Marc-André Lureau | e05ae1d | 2018-11-14 16:36:40 +0400 | [diff] [blame] | 207 | tcphd = (struct tcp_hdr *)pkt->transport_header; |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 208 | |
| 209 | pkt->tcp_seq = ntohl(tcphd->th_seq); |
| 210 | pkt->tcp_ack = ntohl(tcphd->th_ack); |
| 211 | *max_ack = *max_ack > pkt->tcp_ack ? *max_ack : pkt->tcp_ack; |
| 212 | pkt->header_size = pkt->transport_header - (uint8_t *)pkt->data |
| 213 | + (tcphd->th_off << 2) - pkt->vnet_hdr_len; |
| 214 | pkt->payload_size = pkt->size - pkt->header_size; |
| 215 | pkt->seq_end = pkt->tcp_seq + pkt->payload_size; |
| 216 | pkt->flags = tcphd->th_flags; |
| 217 | } |
| 218 | |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 219 | /* |
Mao Zhongyi | 8850d4c | 2017-10-13 14:32:06 +0800 | [diff] [blame] | 220 | * Return 1 on success, if return 0 means the |
| 221 | * packet will be dropped |
| 222 | */ |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 223 | static int colo_insert_packet(GQueue *queue, Packet *pkt, uint32_t *max_ack) |
Mao Zhongyi | 8850d4c | 2017-10-13 14:32:06 +0800 | [diff] [blame] | 224 | { |
| 225 | if (g_queue_get_length(queue) <= MAX_QUEUE_SIZE) { |
| 226 | if (pkt->ip->ip_p == IPPROTO_TCP) { |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 227 | fill_pkt_tcp_info(pkt, max_ack); |
Mao Zhongyi | 8850d4c | 2017-10-13 14:32:06 +0800 | [diff] [blame] | 228 | g_queue_insert_sorted(queue, |
| 229 | pkt, |
| 230 | (GCompareDataFunc)seq_sorter, |
| 231 | NULL); |
| 232 | } else { |
| 233 | g_queue_push_tail(queue, pkt); |
| 234 | } |
| 235 | return 1; |
| 236 | } |
| 237 | return 0; |
| 238 | } |
| 239 | |
| 240 | /* |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 241 | * Return 0 on success, if return -1 means the pkt |
| 242 | * is unsupported(arp and ipv6) and will be sent later |
| 243 | */ |
Mao Zhongyi | 8ec1440 | 2017-10-13 14:32:07 +0800 | [diff] [blame] | 244 | static int packet_enqueue(CompareState *s, int mode, Connection **con) |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 245 | { |
Zhang Chen | b6540d4 | 2016-09-27 10:22:29 +0800 | [diff] [blame] | 246 | ConnectionKey key; |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 247 | Packet *pkt = NULL; |
Zhang Chen | b6540d4 | 2016-09-27 10:22:29 +0800 | [diff] [blame] | 248 | Connection *conn; |
Derek Su | bdadbb0 | 2020-05-22 15:53:57 +0800 | [diff] [blame] | 249 | int ret; |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 250 | |
| 251 | if (mode == PRIMARY_IN) { |
Zhang Chen | ada1a33 | 2017-07-04 14:53:50 +0800 | [diff] [blame] | 252 | pkt = packet_new(s->pri_rs.buf, |
| 253 | s->pri_rs.packet_len, |
| 254 | s->pri_rs.vnet_hdr_len); |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 255 | } else { |
Zhang Chen | ada1a33 | 2017-07-04 14:53:50 +0800 | [diff] [blame] | 256 | pkt = packet_new(s->sec_rs.buf, |
| 257 | s->sec_rs.packet_len, |
| 258 | s->sec_rs.vnet_hdr_len); |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 259 | } |
| 260 | |
| 261 | if (parse_packet_early(pkt)) { |
| 262 | packet_destroy(pkt, NULL); |
| 263 | pkt = NULL; |
| 264 | return -1; |
| 265 | } |
Zhang Chen | b6540d4 | 2016-09-27 10:22:29 +0800 | [diff] [blame] | 266 | fill_connection_key(pkt, &key); |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 267 | |
Zhang Chen | b6540d4 | 2016-09-27 10:22:29 +0800 | [diff] [blame] | 268 | conn = connection_get(s->connection_track_table, |
| 269 | &key, |
| 270 | &s->conn_list); |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 271 | |
Zhang Chen | b6540d4 | 2016-09-27 10:22:29 +0800 | [diff] [blame] | 272 | if (!conn->processing) { |
| 273 | g_queue_push_tail(&s->conn_list, conn); |
| 274 | conn->processing = true; |
| 275 | } |
| 276 | |
| 277 | if (mode == PRIMARY_IN) { |
Derek Su | bdadbb0 | 2020-05-22 15:53:57 +0800 | [diff] [blame] | 278 | ret = colo_insert_packet(&conn->primary_list, pkt, &conn->pack); |
Zhang Chen | b6540d4 | 2016-09-27 10:22:29 +0800 | [diff] [blame] | 279 | } else { |
Derek Su | bdadbb0 | 2020-05-22 15:53:57 +0800 | [diff] [blame] | 280 | ret = colo_insert_packet(&conn->secondary_list, pkt, &conn->sack); |
Zhang Chen | b6540d4 | 2016-09-27 10:22:29 +0800 | [diff] [blame] | 281 | } |
Derek Su | bdadbb0 | 2020-05-22 15:53:57 +0800 | [diff] [blame] | 282 | |
| 283 | if (!ret) { |
| 284 | trace_colo_compare_drop_packet(colo_mode[mode], |
| 285 | "queue size too big, drop packet"); |
| 286 | packet_destroy(pkt, NULL); |
| 287 | pkt = NULL; |
| 288 | } |
| 289 | |
Mao Zhongyi | 4d36623 | 2017-11-16 10:28:32 +0800 | [diff] [blame] | 290 | *con = conn; |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 291 | |
| 292 | return 0; |
| 293 | } |
| 294 | |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 295 | static inline bool after(uint32_t seq1, uint32_t seq2) |
| 296 | { |
| 297 | return (int32_t)(seq1 - seq2) > 0; |
| 298 | } |
| 299 | |
| 300 | static void colo_release_primary_pkt(CompareState *s, Packet *pkt) |
| 301 | { |
| 302 | int ret; |
| 303 | ret = compare_chr_send(s, |
| 304 | pkt->data, |
| 305 | pkt->size, |
Zhang Chen | 30685c0 | 2019-06-10 00:44:31 +0800 | [diff] [blame] | 306 | pkt->vnet_hdr_len, |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 307 | false, |
| 308 | true); |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 309 | if (ret < 0) { |
| 310 | error_report("colo send primary packet failed"); |
| 311 | } |
| 312 | trace_colo_compare_main("packet same and release packet"); |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 313 | packet_destroy_partial(pkt, NULL); |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 314 | } |
| 315 | |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 316 | /* |
| 317 | * The IP packets sent by primary and secondary |
| 318 | * will be compared in here |
| 319 | * TODO support ip fragment, Out-Of-Order |
| 320 | * return: 0 means packet same |
| 321 | * > 0 || < 0 means packet different |
| 322 | */ |
Mao Zhongyi | 9394133 | 2017-12-25 10:54:11 +0800 | [diff] [blame] | 323 | static int colo_compare_packet_payload(Packet *ppkt, |
| 324 | Packet *spkt, |
| 325 | uint16_t poffset, |
| 326 | uint16_t soffset, |
| 327 | uint16_t len) |
| 328 | |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 329 | { |
Stefan Hajnoczi | d87aa13 | 2017-07-31 15:07:18 +0100 | [diff] [blame] | 330 | if (trace_event_get_state_backends(TRACE_COLO_COMPARE_MISCOMPARE)) { |
Zhang Chen | e630b2b | 2017-03-09 15:40:07 +0800 | [diff] [blame] | 331 | char pri_ip_src[20], pri_ip_dst[20], sec_ip_src[20], sec_ip_dst[20]; |
| 332 | |
| 333 | strcpy(pri_ip_src, inet_ntoa(ppkt->ip->ip_src)); |
| 334 | strcpy(pri_ip_dst, inet_ntoa(ppkt->ip->ip_dst)); |
| 335 | strcpy(sec_ip_src, inet_ntoa(spkt->ip->ip_src)); |
| 336 | strcpy(sec_ip_dst, inet_ntoa(spkt->ip->ip_dst)); |
| 337 | |
| 338 | trace_colo_compare_ip_info(ppkt->size, pri_ip_src, |
| 339 | pri_ip_dst, spkt->size, |
| 340 | sec_ip_src, sec_ip_dst); |
| 341 | } |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 342 | |
Mao Zhongyi | 9394133 | 2017-12-25 10:54:11 +0800 | [diff] [blame] | 343 | return memcmp(ppkt->data + poffset, spkt->data + soffset, len); |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 344 | } |
| 345 | |
Zhang Chen | f4b6183 | 2016-09-27 10:22:31 +0800 | [diff] [blame] | 346 | /* |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 347 | * return true means that the payload is consist and |
| 348 | * need to make the next comparison, false means do |
| 349 | * the checkpoint |
| 350 | */ |
| 351 | static bool colo_mark_tcp_pkt(Packet *ppkt, Packet *spkt, |
| 352 | int8_t *mark, uint32_t max_ack) |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 353 | { |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 354 | *mark = 0; |
Zhang Chen | f4b6183 | 2016-09-27 10:22:31 +0800 | [diff] [blame] | 355 | |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 356 | if (ppkt->tcp_seq == spkt->tcp_seq && ppkt->seq_end == spkt->seq_end) { |
Fan Yang | 1e907a3 | 2019-09-24 22:08:29 +0800 | [diff] [blame] | 357 | if (!colo_compare_packet_payload(ppkt, spkt, |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 358 | ppkt->header_size, spkt->header_size, |
| 359 | ppkt->payload_size)) { |
| 360 | *mark = COLO_COMPARE_FREE_SECONDARY | COLO_COMPARE_FREE_PRIMARY; |
| 361 | return true; |
| 362 | } |
| 363 | } |
Zhang Chen | f4b6183 | 2016-09-27 10:22:31 +0800 | [diff] [blame] | 364 | |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 365 | /* one part of secondary packet payload still need to be compared */ |
| 366 | if (!after(ppkt->seq_end, spkt->seq_end)) { |
Fan Yang | 1e907a3 | 2019-09-24 22:08:29 +0800 | [diff] [blame] | 367 | if (!colo_compare_packet_payload(ppkt, spkt, |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 368 | ppkt->header_size + ppkt->offset, |
| 369 | spkt->header_size + spkt->offset, |
| 370 | ppkt->payload_size - ppkt->offset)) { |
| 371 | if (!after(ppkt->tcp_ack, max_ack)) { |
| 372 | *mark = COLO_COMPARE_FREE_PRIMARY; |
| 373 | spkt->offset += ppkt->payload_size - ppkt->offset; |
| 374 | return true; |
| 375 | } else { |
| 376 | /* secondary guest hasn't ack the data, don't send |
| 377 | * out this packet |
| 378 | */ |
| 379 | return false; |
| 380 | } |
| 381 | } |
Zhang Chen | 6efeb32 | 2017-03-02 17:54:17 +0800 | [diff] [blame] | 382 | } else { |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 383 | /* primary packet is longer than secondary packet, compare |
| 384 | * the same part and mark the primary packet offset |
| 385 | */ |
Fan Yang | 1e907a3 | 2019-09-24 22:08:29 +0800 | [diff] [blame] | 386 | if (!colo_compare_packet_payload(ppkt, spkt, |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 387 | ppkt->header_size + ppkt->offset, |
| 388 | spkt->header_size + spkt->offset, |
| 389 | spkt->payload_size - spkt->offset)) { |
| 390 | *mark = COLO_COMPARE_FREE_SECONDARY; |
| 391 | ppkt->offset += spkt->payload_size - spkt->offset; |
| 392 | return true; |
| 393 | } |
Zhang Chen | 6efeb32 | 2017-03-02 17:54:17 +0800 | [diff] [blame] | 394 | } |
Zhang Chen | f4b6183 | 2016-09-27 10:22:31 +0800 | [diff] [blame] | 395 | |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 396 | return false; |
| 397 | } |
Alex Bennée | 2dfe511 | 2016-10-28 14:25:59 +0100 | [diff] [blame] | 398 | |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 399 | static void colo_compare_tcp(CompareState *s, Connection *conn) |
| 400 | { |
| 401 | Packet *ppkt = NULL, *spkt = NULL; |
| 402 | int8_t mark; |
Zhang Chen | f583dca | 2017-04-27 11:46:45 +0800 | [diff] [blame] | 403 | |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 404 | /* |
| 405 | * If ppkt and spkt have the same payload, but ppkt's ACK |
| 406 | * is greater than spkt's ACK, in this case we can not |
| 407 | * send the ppkt because it will cause the secondary guest |
| 408 | * to miss sending some data in the next. Therefore, we |
| 409 | * record the maximum ACK in the current queue at both |
| 410 | * primary side and secondary side. Only when the ack is |
| 411 | * less than the smaller of the two maximum ack, then we |
| 412 | * can ensure that the packet's payload is acknowledged by |
| 413 | * primary and secondary. |
| 414 | */ |
| 415 | uint32_t min_ack = conn->pack > conn->sack ? conn->sack : conn->pack; |
Zhang Chen | f583dca | 2017-04-27 11:46:45 +0800 | [diff] [blame] | 416 | |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 417 | pri: |
| 418 | if (g_queue_is_empty(&conn->primary_list)) { |
| 419 | return; |
| 420 | } |
| 421 | ppkt = g_queue_pop_head(&conn->primary_list); |
| 422 | sec: |
| 423 | if (g_queue_is_empty(&conn->secondary_list)) { |
| 424 | g_queue_push_head(&conn->primary_list, ppkt); |
| 425 | return; |
| 426 | } |
| 427 | spkt = g_queue_pop_head(&conn->secondary_list); |
Zhang Chen | f583dca | 2017-04-27 11:46:45 +0800 | [diff] [blame] | 428 | |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 429 | if (ppkt->tcp_seq == ppkt->seq_end) { |
| 430 | colo_release_primary_pkt(s, ppkt); |
| 431 | ppkt = NULL; |
| 432 | } |
| 433 | |
| 434 | if (ppkt && conn->compare_seq && !after(ppkt->seq_end, conn->compare_seq)) { |
| 435 | trace_colo_compare_main("pri: this packet has compared"); |
| 436 | colo_release_primary_pkt(s, ppkt); |
| 437 | ppkt = NULL; |
| 438 | } |
| 439 | |
| 440 | if (spkt->tcp_seq == spkt->seq_end) { |
| 441 | packet_destroy(spkt, NULL); |
| 442 | if (!ppkt) { |
| 443 | goto pri; |
| 444 | } else { |
| 445 | goto sec; |
| 446 | } |
| 447 | } else { |
| 448 | if (conn->compare_seq && !after(spkt->seq_end, conn->compare_seq)) { |
| 449 | trace_colo_compare_main("sec: this packet has compared"); |
| 450 | packet_destroy(spkt, NULL); |
| 451 | if (!ppkt) { |
| 452 | goto pri; |
| 453 | } else { |
| 454 | goto sec; |
| 455 | } |
| 456 | } |
| 457 | if (!ppkt) { |
| 458 | g_queue_push_head(&conn->secondary_list, spkt); |
| 459 | goto pri; |
| 460 | } |
| 461 | } |
| 462 | |
| 463 | if (colo_mark_tcp_pkt(ppkt, spkt, &mark, min_ack)) { |
| 464 | trace_colo_compare_tcp_info("pri", |
| 465 | ppkt->tcp_seq, ppkt->tcp_ack, |
| 466 | ppkt->header_size, ppkt->payload_size, |
| 467 | ppkt->offset, ppkt->flags); |
| 468 | |
| 469 | trace_colo_compare_tcp_info("sec", |
| 470 | spkt->tcp_seq, spkt->tcp_ack, |
| 471 | spkt->header_size, spkt->payload_size, |
| 472 | spkt->offset, spkt->flags); |
| 473 | |
| 474 | if (mark == COLO_COMPARE_FREE_PRIMARY) { |
| 475 | conn->compare_seq = ppkt->seq_end; |
| 476 | colo_release_primary_pkt(s, ppkt); |
| 477 | g_queue_push_head(&conn->secondary_list, spkt); |
| 478 | goto pri; |
| 479 | } |
| 480 | if (mark == COLO_COMPARE_FREE_SECONDARY) { |
| 481 | conn->compare_seq = spkt->seq_end; |
| 482 | packet_destroy(spkt, NULL); |
| 483 | goto sec; |
| 484 | } |
| 485 | if (mark == (COLO_COMPARE_FREE_PRIMARY | COLO_COMPARE_FREE_SECONDARY)) { |
| 486 | conn->compare_seq = ppkt->seq_end; |
| 487 | colo_release_primary_pkt(s, ppkt); |
| 488 | packet_destroy(spkt, NULL); |
| 489 | goto pri; |
| 490 | } |
| 491 | } else { |
| 492 | g_queue_push_head(&conn->primary_list, ppkt); |
| 493 | g_queue_push_head(&conn->secondary_list, spkt); |
Zhang Chen | f4b6183 | 2016-09-27 10:22:31 +0800 | [diff] [blame] | 494 | |
Lukas Straub | 7665854 | 2020-05-22 15:53:54 +0800 | [diff] [blame] | 495 | if (trace_event_get_state_backends(TRACE_COLO_COMPARE_MISCOMPARE)) { |
| 496 | qemu_hexdump((char *)ppkt->data, stderr, |
| 497 | "colo-compare ppkt", ppkt->size); |
| 498 | qemu_hexdump((char *)spkt->data, stderr, |
| 499 | "colo-compare spkt", spkt->size); |
| 500 | } |
Zhang Chen | f4b6183 | 2016-09-27 10:22:31 +0800 | [diff] [blame] | 501 | |
Zhang Chen | 1d09f70 | 2019-06-10 00:44:32 +0800 | [diff] [blame] | 502 | colo_compare_inconsistency_notify(s); |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 503 | } |
Zhang Chen | f4b6183 | 2016-09-27 10:22:31 +0800 | [diff] [blame] | 504 | } |
| 505 | |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 506 | |
Zhang Chen | f4b6183 | 2016-09-27 10:22:31 +0800 | [diff] [blame] | 507 | /* |
| 508 | * Called from the compare thread on the primary |
| 509 | * for compare udp packet |
| 510 | */ |
| 511 | static int colo_packet_compare_udp(Packet *spkt, Packet *ppkt) |
| 512 | { |
Mao Zhongyi | 9394133 | 2017-12-25 10:54:11 +0800 | [diff] [blame] | 513 | uint16_t network_header_length = ppkt->ip->ip_hl << 2; |
| 514 | uint16_t offset = network_header_length + ETH_HLEN + ppkt->vnet_hdr_len; |
Zhang Chen | f4b6183 | 2016-09-27 10:22:31 +0800 | [diff] [blame] | 515 | |
| 516 | trace_colo_compare_main("compare udp"); |
Zhang Chen | 2ad7ca4 | 2017-03-02 17:54:16 +0800 | [diff] [blame] | 517 | |
Zhang Chen | 6efeb32 | 2017-03-02 17:54:17 +0800 | [diff] [blame] | 518 | /* |
| 519 | * Because of ppkt and spkt are both in the same connection, |
| 520 | * The ppkt's src ip, dst ip, src port, dst port, ip_proto all are |
| 521 | * same with spkt. In addition, IP header's Identification is a random |
| 522 | * field, we can handle it in IP fragmentation function later. |
| 523 | * COLO just concern the response net packet payload from primary guest |
| 524 | * and secondary guest are same or not, So we ignored all IP header include |
| 525 | * other field like TOS,TTL,IP Checksum. we only need to compare |
| 526 | * the ip payload here. |
| 527 | */ |
Mao Zhongyi | 9394133 | 2017-12-25 10:54:11 +0800 | [diff] [blame] | 528 | if (ppkt->size != spkt->size) { |
| 529 | trace_colo_compare_main("UDP: payload size of packets are different"); |
| 530 | return -1; |
| 531 | } |
| 532 | if (colo_compare_packet_payload(ppkt, spkt, offset, offset, |
| 533 | ppkt->size - offset)) { |
Zhang Chen | f4b6183 | 2016-09-27 10:22:31 +0800 | [diff] [blame] | 534 | trace_colo_compare_udp_miscompare("primary pkt size", ppkt->size); |
Zhang Chen | f4b6183 | 2016-09-27 10:22:31 +0800 | [diff] [blame] | 535 | trace_colo_compare_udp_miscompare("Secondary pkt size", spkt->size); |
Stefan Hajnoczi | d87aa13 | 2017-07-31 15:07:18 +0100 | [diff] [blame] | 536 | if (trace_event_get_state_backends(TRACE_COLO_COMPARE_MISCOMPARE)) { |
Zhang Chen | 1723a7f | 2017-03-02 17:54:18 +0800 | [diff] [blame] | 537 | qemu_hexdump((char *)ppkt->data, stderr, "colo-compare pri pkt", |
| 538 | ppkt->size); |
| 539 | qemu_hexdump((char *)spkt->data, stderr, "colo-compare sec pkt", |
| 540 | spkt->size); |
| 541 | } |
Mao Zhongyi | 9394133 | 2017-12-25 10:54:11 +0800 | [diff] [blame] | 542 | return -1; |
| 543 | } else { |
| 544 | return 0; |
Zhang Chen | f4b6183 | 2016-09-27 10:22:31 +0800 | [diff] [blame] | 545 | } |
Zhang Chen | f4b6183 | 2016-09-27 10:22:31 +0800 | [diff] [blame] | 546 | } |
| 547 | |
| 548 | /* |
| 549 | * Called from the compare thread on the primary |
| 550 | * for compare icmp packet |
| 551 | */ |
| 552 | static int colo_packet_compare_icmp(Packet *spkt, Packet *ppkt) |
| 553 | { |
Mao Zhongyi | 9394133 | 2017-12-25 10:54:11 +0800 | [diff] [blame] | 554 | uint16_t network_header_length = ppkt->ip->ip_hl << 2; |
| 555 | uint16_t offset = network_header_length + ETH_HLEN + ppkt->vnet_hdr_len; |
Zhang Chen | 6efeb32 | 2017-03-02 17:54:17 +0800 | [diff] [blame] | 556 | |
Zhang Chen | f4b6183 | 2016-09-27 10:22:31 +0800 | [diff] [blame] | 557 | trace_colo_compare_main("compare icmp"); |
Zhang Chen | f4b6183 | 2016-09-27 10:22:31 +0800 | [diff] [blame] | 558 | |
Zhang Chen | 6efeb32 | 2017-03-02 17:54:17 +0800 | [diff] [blame] | 559 | /* |
| 560 | * Because of ppkt and spkt are both in the same connection, |
| 561 | * The ppkt's src ip, dst ip, src port, dst port, ip_proto all are |
| 562 | * same with spkt. In addition, IP header's Identification is a random |
| 563 | * field, we can handle it in IP fragmentation function later. |
| 564 | * COLO just concern the response net packet payload from primary guest |
| 565 | * and secondary guest are same or not, So we ignored all IP header include |
| 566 | * other field like TOS,TTL,IP Checksum. we only need to compare |
| 567 | * the ip payload here. |
| 568 | */ |
Mao Zhongyi | 9394133 | 2017-12-25 10:54:11 +0800 | [diff] [blame] | 569 | if (ppkt->size != spkt->size) { |
| 570 | trace_colo_compare_main("ICMP: payload size of packets are different"); |
| 571 | return -1; |
| 572 | } |
| 573 | if (colo_compare_packet_payload(ppkt, spkt, offset, offset, |
| 574 | ppkt->size - offset)) { |
Zhang Chen | f4b6183 | 2016-09-27 10:22:31 +0800 | [diff] [blame] | 575 | trace_colo_compare_icmp_miscompare("primary pkt size", |
| 576 | ppkt->size); |
Zhang Chen | f4b6183 | 2016-09-27 10:22:31 +0800 | [diff] [blame] | 577 | trace_colo_compare_icmp_miscompare("Secondary pkt size", |
| 578 | spkt->size); |
Stefan Hajnoczi | d87aa13 | 2017-07-31 15:07:18 +0100 | [diff] [blame] | 579 | if (trace_event_get_state_backends(TRACE_COLO_COMPARE_MISCOMPARE)) { |
Zhang Chen | 1723a7f | 2017-03-02 17:54:18 +0800 | [diff] [blame] | 580 | qemu_hexdump((char *)ppkt->data, stderr, "colo-compare pri pkt", |
| 581 | ppkt->size); |
| 582 | qemu_hexdump((char *)spkt->data, stderr, "colo-compare sec pkt", |
| 583 | spkt->size); |
| 584 | } |
Zhang Chen | f4b6183 | 2016-09-27 10:22:31 +0800 | [diff] [blame] | 585 | return -1; |
| 586 | } else { |
| 587 | return 0; |
| 588 | } |
| 589 | } |
| 590 | |
| 591 | /* |
| 592 | * Called from the compare thread on the primary |
| 593 | * for compare other packet |
| 594 | */ |
| 595 | static int colo_packet_compare_other(Packet *spkt, Packet *ppkt) |
| 596 | { |
Mao Zhongyi | 9394133 | 2017-12-25 10:54:11 +0800 | [diff] [blame] | 597 | uint16_t offset = ppkt->vnet_hdr_len; |
| 598 | |
Zhang Chen | f4b6183 | 2016-09-27 10:22:31 +0800 | [diff] [blame] | 599 | trace_colo_compare_main("compare other"); |
Stefan Hajnoczi | d87aa13 | 2017-07-31 15:07:18 +0100 | [diff] [blame] | 600 | if (trace_event_get_state_backends(TRACE_COLO_COMPARE_MISCOMPARE)) { |
Zhang Chen | e630b2b | 2017-03-09 15:40:07 +0800 | [diff] [blame] | 601 | char pri_ip_src[20], pri_ip_dst[20], sec_ip_src[20], sec_ip_dst[20]; |
| 602 | |
| 603 | strcpy(pri_ip_src, inet_ntoa(ppkt->ip->ip_src)); |
| 604 | strcpy(pri_ip_dst, inet_ntoa(ppkt->ip->ip_dst)); |
| 605 | strcpy(sec_ip_src, inet_ntoa(spkt->ip->ip_src)); |
| 606 | strcpy(sec_ip_dst, inet_ntoa(spkt->ip->ip_dst)); |
| 607 | |
| 608 | trace_colo_compare_ip_info(ppkt->size, pri_ip_src, |
| 609 | pri_ip_dst, spkt->size, |
| 610 | sec_ip_src, sec_ip_dst); |
| 611 | } |
| 612 | |
Mao Zhongyi | 9394133 | 2017-12-25 10:54:11 +0800 | [diff] [blame] | 613 | if (ppkt->size != spkt->size) { |
| 614 | trace_colo_compare_main("Other: payload size of packets are different"); |
| 615 | return -1; |
| 616 | } |
| 617 | return colo_compare_packet_payload(ppkt, spkt, offset, offset, |
| 618 | ppkt->size - offset); |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 619 | } |
| 620 | |
| 621 | static int colo_old_packet_check_one(Packet *pkt, int64_t *check_time) |
| 622 | { |
| 623 | int64_t now = qemu_clock_get_ms(QEMU_CLOCK_HOST); |
| 624 | |
| 625 | if ((now - pkt->creation_ms) > (*check_time)) { |
| 626 | trace_colo_old_packet_check_found(pkt->creation_ms); |
| 627 | return 0; |
| 628 | } else { |
| 629 | return 1; |
| 630 | } |
| 631 | } |
| 632 | |
Zhang Chen | dccd031 | 2018-09-03 12:38:44 +0800 | [diff] [blame] | 633 | void colo_compare_register_notifier(Notifier *notify) |
| 634 | { |
| 635 | notifier_list_add(&colo_compare_notifiers, notify); |
| 636 | } |
| 637 | |
| 638 | void colo_compare_unregister_notifier(Notifier *notify) |
| 639 | { |
| 640 | notifier_remove(notify); |
| 641 | } |
| 642 | |
Zhang Chen | d25a7da | 2017-04-12 20:12:07 +0800 | [diff] [blame] | 643 | static int colo_old_packet_check_one_conn(Connection *conn, |
Zhang Chen | 1d09f70 | 2019-06-10 00:44:32 +0800 | [diff] [blame] | 644 | CompareState *s) |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 645 | { |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 646 | GList *result = NULL; |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 647 | |
| 648 | result = g_queue_find_custom(&conn->primary_list, |
Zhang Chen | 9cc43c9 | 2020-03-18 16:23:19 +0800 | [diff] [blame] | 649 | &s->compare_timeout, |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 650 | (GCompareFunc)colo_old_packet_check_one); |
| 651 | |
| 652 | if (result) { |
Zhang Chen | 61c5f46 | 2017-09-05 14:31:06 +0800 | [diff] [blame] | 653 | /* Do checkpoint will flush old packet */ |
Zhang Chen | 1d09f70 | 2019-06-10 00:44:32 +0800 | [diff] [blame] | 654 | colo_compare_inconsistency_notify(s); |
Zhang Chen | d25a7da | 2017-04-12 20:12:07 +0800 | [diff] [blame] | 655 | return 0; |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 656 | } |
Zhang Chen | d25a7da | 2017-04-12 20:12:07 +0800 | [diff] [blame] | 657 | |
| 658 | return 1; |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 659 | } |
| 660 | |
| 661 | /* |
| 662 | * Look for old packets that the secondary hasn't matched, |
| 663 | * if we have some then we have to checkpoint to wake |
| 664 | * the secondary up. |
| 665 | */ |
| 666 | static void colo_old_packet_check(void *opaque) |
| 667 | { |
| 668 | CompareState *s = opaque; |
| 669 | |
Zhang Chen | d25a7da | 2017-04-12 20:12:07 +0800 | [diff] [blame] | 670 | /* |
| 671 | * If we find one old packet, stop finding job and notify |
| 672 | * COLO frame do checkpoint. |
| 673 | */ |
Zhang Chen | 1d09f70 | 2019-06-10 00:44:32 +0800 | [diff] [blame] | 674 | g_queue_find_custom(&s->conn_list, s, |
Zhang Chen | d25a7da | 2017-04-12 20:12:07 +0800 | [diff] [blame] | 675 | (GCompareFunc)colo_old_packet_check_one_conn); |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 676 | } |
| 677 | |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 678 | static void colo_compare_packet(CompareState *s, Connection *conn, |
| 679 | int (*HandlePacket)(Packet *spkt, |
| 680 | Packet *ppkt)) |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 681 | { |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 682 | Packet *pkt = NULL; |
| 683 | GList *result = NULL; |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 684 | |
| 685 | while (!g_queue_is_empty(&conn->primary_list) && |
| 686 | !g_queue_is_empty(&conn->secondary_list)) { |
Zhang Chen | 626bba9 | 2017-09-05 14:31:05 +0800 | [diff] [blame] | 687 | pkt = g_queue_pop_head(&conn->primary_list); |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 688 | result = g_queue_find_custom(&conn->secondary_list, |
| 689 | pkt, (GCompareFunc)HandlePacket); |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 690 | |
| 691 | if (result) { |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 692 | colo_release_primary_pkt(s, pkt); |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 693 | g_queue_remove(&conn->secondary_list, result->data); |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 694 | } else { |
| 695 | /* |
| 696 | * If one packet arrive late, the secondary_list or |
| 697 | * primary_list will be empty, so we can't compare it |
Zhang Chen | dccd031 | 2018-09-03 12:38:44 +0800 | [diff] [blame] | 698 | * until next comparison. If the packets in the list are |
| 699 | * timeout, it will trigger a checkpoint request. |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 700 | */ |
| 701 | trace_colo_compare_main("packet different"); |
Zhang Chen | 626bba9 | 2017-09-05 14:31:05 +0800 | [diff] [blame] | 702 | g_queue_push_head(&conn->primary_list, pkt); |
Zhang Chen | 1d09f70 | 2019-06-10 00:44:32 +0800 | [diff] [blame] | 703 | |
| 704 | colo_compare_inconsistency_notify(s); |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 705 | break; |
| 706 | } |
| 707 | } |
| 708 | } |
| 709 | |
Mao Zhongyi | f449c9e | 2017-12-25 10:54:12 +0800 | [diff] [blame] | 710 | /* |
| 711 | * Called from the compare thread on the primary |
| 712 | * for compare packet with secondary list of the |
| 713 | * specified connection when a new packet was |
| 714 | * queued to it. |
| 715 | */ |
| 716 | static void colo_compare_connection(void *opaque, void *user_data) |
| 717 | { |
| 718 | CompareState *s = user_data; |
| 719 | Connection *conn = opaque; |
| 720 | |
| 721 | switch (conn->ip_proto) { |
| 722 | case IPPROTO_TCP: |
| 723 | colo_compare_tcp(s, conn); |
| 724 | break; |
| 725 | case IPPROTO_UDP: |
| 726 | colo_compare_packet(s, conn, colo_packet_compare_udp); |
| 727 | break; |
| 728 | case IPPROTO_ICMP: |
| 729 | colo_compare_packet(s, conn, colo_packet_compare_icmp); |
| 730 | break; |
| 731 | default: |
| 732 | colo_compare_packet(s, conn, colo_packet_compare_other); |
| 733 | break; |
| 734 | } |
| 735 | } |
| 736 | |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 737 | static void coroutine_fn _compare_chr_send(void *opaque) |
| 738 | { |
| 739 | SendCo *sendco = opaque; |
| 740 | CompareState *s = sendco->s; |
| 741 | int ret = 0; |
| 742 | |
| 743 | while (!g_queue_is_empty(&sendco->send_list)) { |
| 744 | SendEntry *entry = g_queue_pop_tail(&sendco->send_list); |
| 745 | uint32_t len = htonl(entry->size); |
| 746 | |
| 747 | ret = qemu_chr_fe_write_all(sendco->chr, (uint8_t *)&len, sizeof(len)); |
| 748 | |
| 749 | if (ret != sizeof(len)) { |
| 750 | g_free(entry->buf); |
| 751 | g_slice_free(SendEntry, entry); |
| 752 | goto err; |
| 753 | } |
| 754 | |
| 755 | if (!sendco->notify_remote_frame && s->vnet_hdr) { |
| 756 | /* |
| 757 | * We send vnet header len make other module(like filter-redirector) |
| 758 | * know how to parse net packet correctly. |
| 759 | */ |
| 760 | len = htonl(entry->vnet_hdr_len); |
| 761 | |
| 762 | ret = qemu_chr_fe_write_all(sendco->chr, |
| 763 | (uint8_t *)&len, |
| 764 | sizeof(len)); |
| 765 | |
| 766 | if (ret != sizeof(len)) { |
| 767 | g_free(entry->buf); |
| 768 | g_slice_free(SendEntry, entry); |
| 769 | goto err; |
| 770 | } |
| 771 | } |
| 772 | |
| 773 | ret = qemu_chr_fe_write_all(sendco->chr, |
| 774 | (uint8_t *)entry->buf, |
| 775 | entry->size); |
| 776 | |
| 777 | if (ret != entry->size) { |
| 778 | g_free(entry->buf); |
| 779 | g_slice_free(SendEntry, entry); |
| 780 | goto err; |
| 781 | } |
| 782 | |
| 783 | g_free(entry->buf); |
| 784 | g_slice_free(SendEntry, entry); |
| 785 | } |
| 786 | |
| 787 | sendco->ret = 0; |
| 788 | goto out; |
| 789 | |
| 790 | err: |
| 791 | while (!g_queue_is_empty(&sendco->send_list)) { |
| 792 | SendEntry *entry = g_queue_pop_tail(&sendco->send_list); |
| 793 | g_free(entry->buf); |
| 794 | g_slice_free(SendEntry, entry); |
| 795 | } |
| 796 | sendco->ret = ret < 0 ? ret : -EIO; |
| 797 | out: |
| 798 | sendco->co = NULL; |
| 799 | sendco->done = true; |
| 800 | aio_wait_kick(); |
| 801 | } |
| 802 | |
Zhang Chen | 3037e7a | 2017-07-04 14:53:51 +0800 | [diff] [blame] | 803 | static int compare_chr_send(CompareState *s, |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 804 | uint8_t *buf, |
Zhang Chen | aa3a703 | 2017-07-04 14:53:52 +0800 | [diff] [blame] | 805 | uint32_t size, |
Zhang Chen | 30685c0 | 2019-06-10 00:44:31 +0800 | [diff] [blame] | 806 | uint32_t vnet_hdr_len, |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 807 | bool notify_remote_frame, |
| 808 | bool zero_copy) |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 809 | { |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 810 | SendCo *sendco; |
| 811 | SendEntry *entry; |
| 812 | |
| 813 | if (notify_remote_frame) { |
| 814 | sendco = &s->notify_sendco; |
| 815 | } else { |
| 816 | sendco = &s->out_sendco; |
| 817 | } |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 818 | |
| 819 | if (!size) { |
| 820 | return 0; |
| 821 | } |
| 822 | |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 823 | entry = g_slice_new(SendEntry); |
| 824 | entry->size = size; |
| 825 | entry->vnet_hdr_len = vnet_hdr_len; |
| 826 | if (zero_copy) { |
| 827 | entry->buf = buf; |
Zhang Chen | 30685c0 | 2019-06-10 00:44:31 +0800 | [diff] [blame] | 828 | } else { |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 829 | entry->buf = g_malloc(size); |
| 830 | memcpy(entry->buf, buf, size); |
Zhang Chen | 30685c0 | 2019-06-10 00:44:31 +0800 | [diff] [blame] | 831 | } |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 832 | g_queue_push_head(&sendco->send_list, entry); |
Zhang Chen | 30685c0 | 2019-06-10 00:44:31 +0800 | [diff] [blame] | 833 | |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 834 | if (sendco->done) { |
| 835 | sendco->co = qemu_coroutine_create(_compare_chr_send, sendco); |
| 836 | sendco->done = false; |
| 837 | qemu_coroutine_enter(sendco->co); |
| 838 | if (sendco->done) { |
| 839 | /* report early errors */ |
| 840 | return sendco->ret; |
Zhang Chen | aa3a703 | 2017-07-04 14:53:52 +0800 | [diff] [blame] | 841 | } |
| 842 | } |
| 843 | |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 844 | /* assume success */ |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 845 | return 0; |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 846 | } |
| 847 | |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 848 | static int compare_chr_can_read(void *opaque) |
| 849 | { |
| 850 | return COMPARE_READ_LEN_MAX; |
| 851 | } |
| 852 | |
| 853 | /* |
| 854 | * Called from the main thread on the primary for packets |
| 855 | * arriving over the socket from the primary. |
| 856 | */ |
| 857 | static void compare_pri_chr_in(void *opaque, const uint8_t *buf, int size) |
| 858 | { |
| 859 | CompareState *s = COLO_COMPARE(opaque); |
| 860 | int ret; |
| 861 | |
| 862 | ret = net_fill_rstate(&s->pri_rs, buf, size); |
| 863 | if (ret == -1) { |
Anton Nefedov | 81517ba | 2017-07-06 15:08:49 +0300 | [diff] [blame] | 864 | qemu_chr_fe_set_handlers(&s->chr_pri_in, NULL, NULL, NULL, NULL, |
Marc-André Lureau | 39ab61c | 2016-10-22 12:53:03 +0300 | [diff] [blame] | 865 | NULL, NULL, true); |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 866 | error_report("colo-compare primary_in error"); |
| 867 | } |
| 868 | } |
| 869 | |
| 870 | /* |
| 871 | * Called from the main thread on the primary for packets |
| 872 | * arriving over the socket from the secondary. |
| 873 | */ |
| 874 | static void compare_sec_chr_in(void *opaque, const uint8_t *buf, int size) |
| 875 | { |
| 876 | CompareState *s = COLO_COMPARE(opaque); |
| 877 | int ret; |
| 878 | |
| 879 | ret = net_fill_rstate(&s->sec_rs, buf, size); |
| 880 | if (ret == -1) { |
Anton Nefedov | 81517ba | 2017-07-06 15:08:49 +0300 | [diff] [blame] | 881 | qemu_chr_fe_set_handlers(&s->chr_sec_in, NULL, NULL, NULL, NULL, |
Marc-André Lureau | 39ab61c | 2016-10-22 12:53:03 +0300 | [diff] [blame] | 882 | NULL, NULL, true); |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 883 | error_report("colo-compare secondary_in error"); |
| 884 | } |
| 885 | } |
| 886 | |
Zhang Chen | 13025fe | 2019-06-10 00:44:30 +0800 | [diff] [blame] | 887 | static void compare_notify_chr(void *opaque, const uint8_t *buf, int size) |
| 888 | { |
| 889 | CompareState *s = COLO_COMPARE(opaque); |
| 890 | int ret; |
| 891 | |
| 892 | ret = net_fill_rstate(&s->notify_rs, buf, size); |
| 893 | if (ret == -1) { |
| 894 | qemu_chr_fe_set_handlers(&s->chr_notify_dev, NULL, NULL, NULL, NULL, |
| 895 | NULL, NULL, true); |
| 896 | error_report("colo-compare notify_dev error"); |
| 897 | } |
| 898 | } |
| 899 | |
zhanghailiang | 66d2a24 | 2017-02-17 10:53:11 +0800 | [diff] [blame] | 900 | /* |
| 901 | * Check old packet regularly so it can watch for any packets |
| 902 | * that the secondary hasn't produced equivalents of. |
| 903 | */ |
Wang Yong | dd321ec | 2017-08-29 15:22:38 +0800 | [diff] [blame] | 904 | static void check_old_packet_regular(void *opaque) |
zhanghailiang | 66d2a24 | 2017-02-17 10:53:11 +0800 | [diff] [blame] | 905 | { |
| 906 | CompareState *s = opaque; |
| 907 | |
| 908 | /* if have old packet we will notify checkpoint */ |
| 909 | colo_old_packet_check(s); |
Wang Yong | dd321ec | 2017-08-29 15:22:38 +0800 | [diff] [blame] | 910 | timer_mod(s->packet_check_timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + |
Zhang Chen | cca35ac | 2020-03-18 16:23:20 +0800 | [diff] [blame] | 911 | s->expired_scan_cycle); |
zhanghailiang | 66d2a24 | 2017-02-17 10:53:11 +0800 | [diff] [blame] | 912 | } |
| 913 | |
Zhang Chen | 0ffcece | 2018-09-03 12:38:43 +0800 | [diff] [blame] | 914 | /* Public API, Used for COLO frame to notify compare event */ |
| 915 | void colo_notify_compares_event(void *opaque, int event, Error **errp) |
| 916 | { |
| 917 | CompareState *s; |
Lukas Straub | 45942b7 | 2020-05-22 15:53:55 +0800 | [diff] [blame] | 918 | qemu_mutex_lock(&colo_compare_mutex); |
| 919 | |
| 920 | if (!colo_compare_active) { |
| 921 | qemu_mutex_unlock(&colo_compare_mutex); |
| 922 | return; |
| 923 | } |
Zhang Chen | 0ffcece | 2018-09-03 12:38:43 +0800 | [diff] [blame] | 924 | |
| 925 | qemu_mutex_lock(&event_mtx); |
| 926 | QTAILQ_FOREACH(s, &net_compares, next) { |
| 927 | s->event = event; |
| 928 | qemu_bh_schedule(s->event_bh); |
| 929 | event_unhandled_count++; |
| 930 | } |
| 931 | /* Wait all compare threads to finish handling this event */ |
| 932 | while (event_unhandled_count > 0) { |
| 933 | qemu_cond_wait(&event_complete_cond, &event_mtx); |
| 934 | } |
| 935 | |
| 936 | qemu_mutex_unlock(&event_mtx); |
Lukas Straub | 45942b7 | 2020-05-22 15:53:55 +0800 | [diff] [blame] | 937 | qemu_mutex_unlock(&colo_compare_mutex); |
Zhang Chen | 0ffcece | 2018-09-03 12:38:43 +0800 | [diff] [blame] | 938 | } |
| 939 | |
Wang Yong | dd321ec | 2017-08-29 15:22:38 +0800 | [diff] [blame] | 940 | static void colo_compare_timer_init(CompareState *s) |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 941 | { |
Wang Yong | dd321ec | 2017-08-29 15:22:38 +0800 | [diff] [blame] | 942 | AioContext *ctx = iothread_get_aio_context(s->iothread); |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 943 | |
Wang Yong | dd321ec | 2017-08-29 15:22:38 +0800 | [diff] [blame] | 944 | s->packet_check_timer = aio_timer_new(ctx, QEMU_CLOCK_VIRTUAL, |
| 945 | SCALE_MS, check_old_packet_regular, |
| 946 | s); |
| 947 | timer_mod(s->packet_check_timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + |
Zhang Chen | cca35ac | 2020-03-18 16:23:20 +0800 | [diff] [blame] | 948 | s->expired_scan_cycle); |
Wang Yong | dd321ec | 2017-08-29 15:22:38 +0800 | [diff] [blame] | 949 | } |
| 950 | |
| 951 | static void colo_compare_timer_del(CompareState *s) |
| 952 | { |
| 953 | if (s->packet_check_timer) { |
| 954 | timer_del(s->packet_check_timer); |
| 955 | timer_free(s->packet_check_timer); |
| 956 | s->packet_check_timer = NULL; |
| 957 | } |
| 958 | } |
| 959 | |
Zhang Chen | 0ffcece | 2018-09-03 12:38:43 +0800 | [diff] [blame] | 960 | static void colo_flush_packets(void *opaque, void *user_data); |
| 961 | |
| 962 | static void colo_compare_handle_event(void *opaque) |
| 963 | { |
| 964 | CompareState *s = opaque; |
| 965 | |
| 966 | switch (s->event) { |
| 967 | case COLO_EVENT_CHECKPOINT: |
| 968 | g_queue_foreach(&s->conn_list, colo_flush_packets, s); |
| 969 | break; |
| 970 | case COLO_EVENT_FAILOVER: |
| 971 | break; |
| 972 | default: |
| 973 | break; |
| 974 | } |
| 975 | |
Zhang Chen | 0ffcece | 2018-09-03 12:38:43 +0800 | [diff] [blame] | 976 | qemu_mutex_lock(&event_mtx); |
Lukas Straub | 78e4f44 | 2019-04-20 19:14:25 +0200 | [diff] [blame] | 977 | assert(event_unhandled_count > 0); |
Zhang Chen | 0ffcece | 2018-09-03 12:38:43 +0800 | [diff] [blame] | 978 | event_unhandled_count--; |
| 979 | qemu_cond_broadcast(&event_complete_cond); |
| 980 | qemu_mutex_unlock(&event_mtx); |
| 981 | } |
| 982 | |
Wang Yong | dd321ec | 2017-08-29 15:22:38 +0800 | [diff] [blame] | 983 | static void colo_compare_iothread(CompareState *s) |
| 984 | { |
Lukas Straub | 5893c73 | 2020-05-22 15:53:51 +0800 | [diff] [blame] | 985 | AioContext *ctx = iothread_get_aio_context(s->iothread); |
Wang Yong | dd321ec | 2017-08-29 15:22:38 +0800 | [diff] [blame] | 986 | object_ref(OBJECT(s->iothread)); |
| 987 | s->worker_context = iothread_get_g_main_context(s->iothread); |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 988 | |
Marc-André Lureau | 5345fdb | 2016-10-22 12:52:55 +0300 | [diff] [blame] | 989 | qemu_chr_fe_set_handlers(&s->chr_pri_in, compare_chr_can_read, |
Anton Nefedov | 81517ba | 2017-07-06 15:08:49 +0300 | [diff] [blame] | 990 | compare_pri_chr_in, NULL, NULL, |
| 991 | s, s->worker_context, true); |
Marc-André Lureau | 5345fdb | 2016-10-22 12:52:55 +0300 | [diff] [blame] | 992 | qemu_chr_fe_set_handlers(&s->chr_sec_in, compare_chr_can_read, |
Anton Nefedov | 81517ba | 2017-07-06 15:08:49 +0300 | [diff] [blame] | 993 | compare_sec_chr_in, NULL, NULL, |
| 994 | s, s->worker_context, true); |
Zhang Chen | 13025fe | 2019-06-10 00:44:30 +0800 | [diff] [blame] | 995 | if (s->notify_dev) { |
| 996 | qemu_chr_fe_set_handlers(&s->chr_notify_dev, compare_chr_can_read, |
| 997 | compare_notify_chr, NULL, NULL, |
| 998 | s, s->worker_context, true); |
| 999 | } |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 1000 | |
Wang Yong | dd321ec | 2017-08-29 15:22:38 +0800 | [diff] [blame] | 1001 | colo_compare_timer_init(s); |
Lukas Straub | 5893c73 | 2020-05-22 15:53:51 +0800 | [diff] [blame] | 1002 | s->event_bh = aio_bh_new(ctx, colo_compare_handle_event, s); |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 1003 | } |
| 1004 | |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1005 | static char *compare_get_pri_indev(Object *obj, Error **errp) |
| 1006 | { |
| 1007 | CompareState *s = COLO_COMPARE(obj); |
| 1008 | |
| 1009 | return g_strdup(s->pri_indev); |
| 1010 | } |
| 1011 | |
| 1012 | static void compare_set_pri_indev(Object *obj, const char *value, Error **errp) |
| 1013 | { |
| 1014 | CompareState *s = COLO_COMPARE(obj); |
| 1015 | |
| 1016 | g_free(s->pri_indev); |
| 1017 | s->pri_indev = g_strdup(value); |
| 1018 | } |
| 1019 | |
| 1020 | static char *compare_get_sec_indev(Object *obj, Error **errp) |
| 1021 | { |
| 1022 | CompareState *s = COLO_COMPARE(obj); |
| 1023 | |
| 1024 | return g_strdup(s->sec_indev); |
| 1025 | } |
| 1026 | |
| 1027 | static void compare_set_sec_indev(Object *obj, const char *value, Error **errp) |
| 1028 | { |
| 1029 | CompareState *s = COLO_COMPARE(obj); |
| 1030 | |
| 1031 | g_free(s->sec_indev); |
| 1032 | s->sec_indev = g_strdup(value); |
| 1033 | } |
| 1034 | |
| 1035 | static char *compare_get_outdev(Object *obj, Error **errp) |
| 1036 | { |
| 1037 | CompareState *s = COLO_COMPARE(obj); |
| 1038 | |
| 1039 | return g_strdup(s->outdev); |
| 1040 | } |
| 1041 | |
| 1042 | static void compare_set_outdev(Object *obj, const char *value, Error **errp) |
| 1043 | { |
| 1044 | CompareState *s = COLO_COMPARE(obj); |
| 1045 | |
| 1046 | g_free(s->outdev); |
| 1047 | s->outdev = g_strdup(value); |
| 1048 | } |
| 1049 | |
Zhang Chen | aa3a703 | 2017-07-04 14:53:52 +0800 | [diff] [blame] | 1050 | static bool compare_get_vnet_hdr(Object *obj, Error **errp) |
| 1051 | { |
| 1052 | CompareState *s = COLO_COMPARE(obj); |
| 1053 | |
| 1054 | return s->vnet_hdr; |
| 1055 | } |
| 1056 | |
| 1057 | static void compare_set_vnet_hdr(Object *obj, |
| 1058 | bool value, |
| 1059 | Error **errp) |
| 1060 | { |
| 1061 | CompareState *s = COLO_COMPARE(obj); |
| 1062 | |
| 1063 | s->vnet_hdr = value; |
| 1064 | } |
| 1065 | |
Zhang Chen | cf6af76 | 2019-06-10 00:44:29 +0800 | [diff] [blame] | 1066 | static char *compare_get_notify_dev(Object *obj, Error **errp) |
| 1067 | { |
| 1068 | CompareState *s = COLO_COMPARE(obj); |
| 1069 | |
| 1070 | return g_strdup(s->notify_dev); |
| 1071 | } |
| 1072 | |
| 1073 | static void compare_set_notify_dev(Object *obj, const char *value, Error **errp) |
| 1074 | { |
| 1075 | CompareState *s = COLO_COMPARE(obj); |
| 1076 | |
| 1077 | g_free(s->notify_dev); |
| 1078 | s->notify_dev = g_strdup(value); |
| 1079 | } |
| 1080 | |
Zhang Chen | 9cc43c9 | 2020-03-18 16:23:19 +0800 | [diff] [blame] | 1081 | static void compare_get_timeout(Object *obj, Visitor *v, |
| 1082 | const char *name, void *opaque, |
| 1083 | Error **errp) |
| 1084 | { |
| 1085 | CompareState *s = COLO_COMPARE(obj); |
| 1086 | uint32_t value = s->compare_timeout; |
| 1087 | |
| 1088 | visit_type_uint32(v, name, &value, errp); |
| 1089 | } |
| 1090 | |
| 1091 | static void compare_set_timeout(Object *obj, Visitor *v, |
| 1092 | const char *name, void *opaque, |
| 1093 | Error **errp) |
| 1094 | { |
| 1095 | CompareState *s = COLO_COMPARE(obj); |
| 1096 | Error *local_err = NULL; |
| 1097 | uint32_t value; |
| 1098 | |
| 1099 | visit_type_uint32(v, name, &value, &local_err); |
| 1100 | if (local_err) { |
| 1101 | goto out; |
| 1102 | } |
| 1103 | if (!value) { |
| 1104 | error_setg(&local_err, "Property '%s.%s' requires a positive value", |
| 1105 | object_get_typename(obj), name); |
| 1106 | goto out; |
| 1107 | } |
| 1108 | s->compare_timeout = value; |
| 1109 | |
| 1110 | out: |
| 1111 | error_propagate(errp, local_err); |
| 1112 | } |
| 1113 | |
Zhang Chen | cca35ac | 2020-03-18 16:23:20 +0800 | [diff] [blame] | 1114 | static void compare_get_expired_scan_cycle(Object *obj, Visitor *v, |
| 1115 | const char *name, void *opaque, |
| 1116 | Error **errp) |
| 1117 | { |
| 1118 | CompareState *s = COLO_COMPARE(obj); |
| 1119 | uint32_t value = s->expired_scan_cycle; |
| 1120 | |
| 1121 | visit_type_uint32(v, name, &value, errp); |
| 1122 | } |
| 1123 | |
| 1124 | static void compare_set_expired_scan_cycle(Object *obj, Visitor *v, |
| 1125 | const char *name, void *opaque, |
| 1126 | Error **errp) |
| 1127 | { |
| 1128 | CompareState *s = COLO_COMPARE(obj); |
| 1129 | Error *local_err = NULL; |
| 1130 | uint32_t value; |
| 1131 | |
| 1132 | visit_type_uint32(v, name, &value, &local_err); |
| 1133 | if (local_err) { |
| 1134 | goto out; |
| 1135 | } |
| 1136 | if (!value) { |
| 1137 | error_setg(&local_err, "Property '%s.%s' requires a positive value", |
| 1138 | object_get_typename(obj), name); |
| 1139 | goto out; |
| 1140 | } |
| 1141 | s->expired_scan_cycle = value; |
| 1142 | |
| 1143 | out: |
| 1144 | error_propagate(errp, local_err); |
| 1145 | } |
| 1146 | |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1147 | static void compare_pri_rs_finalize(SocketReadState *pri_rs) |
| 1148 | { |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 1149 | CompareState *s = container_of(pri_rs, CompareState, pri_rs); |
Mao Zhongyi | 8ec1440 | 2017-10-13 14:32:07 +0800 | [diff] [blame] | 1150 | Connection *conn = NULL; |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 1151 | |
Mao Zhongyi | 8ec1440 | 2017-10-13 14:32:07 +0800 | [diff] [blame] | 1152 | if (packet_enqueue(s, PRIMARY_IN, &conn)) { |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 1153 | trace_colo_compare_main("primary: unsupported packet in"); |
Zhang Chen | aa3a703 | 2017-07-04 14:53:52 +0800 | [diff] [blame] | 1154 | compare_chr_send(s, |
| 1155 | pri_rs->buf, |
| 1156 | pri_rs->packet_len, |
Zhang Chen | 30685c0 | 2019-06-10 00:44:31 +0800 | [diff] [blame] | 1157 | pri_rs->vnet_hdr_len, |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 1158 | false, |
Zhang Chen | 30685c0 | 2019-06-10 00:44:31 +0800 | [diff] [blame] | 1159 | false); |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 1160 | } else { |
Mao Zhongyi | 3463218 | 2017-10-13 14:32:08 +0800 | [diff] [blame] | 1161 | /* compare packet in the specified connection */ |
Mao Zhongyi | 8ec1440 | 2017-10-13 14:32:07 +0800 | [diff] [blame] | 1162 | colo_compare_connection(conn, s); |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 1163 | } |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1164 | } |
| 1165 | |
| 1166 | static void compare_sec_rs_finalize(SocketReadState *sec_rs) |
| 1167 | { |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 1168 | CompareState *s = container_of(sec_rs, CompareState, sec_rs); |
Mao Zhongyi | 8ec1440 | 2017-10-13 14:32:07 +0800 | [diff] [blame] | 1169 | Connection *conn = NULL; |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 1170 | |
Mao Zhongyi | 8ec1440 | 2017-10-13 14:32:07 +0800 | [diff] [blame] | 1171 | if (packet_enqueue(s, SECONDARY_IN, &conn)) { |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 1172 | trace_colo_compare_main("secondary: unsupported packet in"); |
Zhang Chen | 0682e15 | 2016-09-27 10:22:30 +0800 | [diff] [blame] | 1173 | } else { |
Mao Zhongyi | 3463218 | 2017-10-13 14:32:08 +0800 | [diff] [blame] | 1174 | /* compare packet in the specified connection */ |
Mao Zhongyi | 8ec1440 | 2017-10-13 14:32:07 +0800 | [diff] [blame] | 1175 | colo_compare_connection(conn, s); |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 1176 | } |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1177 | } |
| 1178 | |
Zhang Chen | 13025fe | 2019-06-10 00:44:30 +0800 | [diff] [blame] | 1179 | static void compare_notify_rs_finalize(SocketReadState *notify_rs) |
| 1180 | { |
Zhang Chen | 1d09f70 | 2019-06-10 00:44:32 +0800 | [diff] [blame] | 1181 | CompareState *s = container_of(notify_rs, CompareState, notify_rs); |
| 1182 | |
Zhang Chen | f77bed1 | 2019-07-23 01:18:28 +0800 | [diff] [blame] | 1183 | const char msg[] = "COLO_COMPARE_GET_XEN_INIT"; |
Zhang Chen | 1d09f70 | 2019-06-10 00:44:32 +0800 | [diff] [blame] | 1184 | int ret; |
| 1185 | |
Zhang Chen | f77bed1 | 2019-07-23 01:18:28 +0800 | [diff] [blame] | 1186 | if (packet_matches_str("COLO_USERSPACE_PROXY_INIT", |
| 1187 | notify_rs->buf, |
| 1188 | notify_rs->packet_len)) { |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 1189 | ret = compare_chr_send(s, (uint8_t *)msg, strlen(msg), 0, true, false); |
Zhang Chen | 1d09f70 | 2019-06-10 00:44:32 +0800 | [diff] [blame] | 1190 | if (ret < 0) { |
| 1191 | error_report("Notify Xen COLO-frame INIT failed"); |
| 1192 | } |
Zhang Chen | f77bed1 | 2019-07-23 01:18:28 +0800 | [diff] [blame] | 1193 | } else if (packet_matches_str("COLO_CHECKPOINT", |
| 1194 | notify_rs->buf, |
| 1195 | notify_rs->packet_len)) { |
Zhang Chen | 1d09f70 | 2019-06-10 00:44:32 +0800 | [diff] [blame] | 1196 | /* colo-compare do checkpoint, flush pri packet and remove sec packet */ |
| 1197 | g_queue_foreach(&s->conn_list, colo_flush_packets, s); |
Zhang Chen | f77bed1 | 2019-07-23 01:18:28 +0800 | [diff] [blame] | 1198 | } else { |
| 1199 | error_report("COLO compare got unsupported instruction"); |
Zhang Chen | 1d09f70 | 2019-06-10 00:44:32 +0800 | [diff] [blame] | 1200 | } |
Zhang Chen | 13025fe | 2019-06-10 00:44:30 +0800 | [diff] [blame] | 1201 | } |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1202 | |
| 1203 | /* |
| 1204 | * Return 0 is success. |
| 1205 | * Return 1 is failed. |
| 1206 | */ |
Marc-André Lureau | 0ec7b3e | 2016-12-07 16:20:22 +0300 | [diff] [blame] | 1207 | static int find_and_check_chardev(Chardev **chr, |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1208 | char *chr_name, |
| 1209 | Error **errp) |
| 1210 | { |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1211 | *chr = qemu_chr_find(chr_name); |
| 1212 | if (*chr == NULL) { |
| 1213 | error_setg(errp, "Device '%s' not found", |
| 1214 | chr_name); |
| 1215 | return 1; |
| 1216 | } |
| 1217 | |
Daniel P. Berrange | 0a73336 | 2016-10-07 13:18:34 +0100 | [diff] [blame] | 1218 | if (!qemu_chr_has_feature(*chr, QEMU_CHAR_FEATURE_RECONNECTABLE)) { |
| 1219 | error_setg(errp, "chardev \"%s\" is not reconnectable", |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1220 | chr_name); |
| 1221 | return 1; |
| 1222 | } |
Marc-André Lureau | fbf3cc3 | 2016-10-22 12:52:54 +0300 | [diff] [blame] | 1223 | |
Marc-André Lureau | 269d25c | 2018-12-06 00:37:35 +0400 | [diff] [blame] | 1224 | if (!qemu_chr_has_feature(*chr, QEMU_CHAR_FEATURE_GCONTEXT)) { |
| 1225 | error_setg(errp, "chardev \"%s\" cannot switch context", |
| 1226 | chr_name); |
| 1227 | return 1; |
| 1228 | } |
| 1229 | |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1230 | return 0; |
| 1231 | } |
| 1232 | |
| 1233 | /* |
| 1234 | * Called from the main thread on the primary |
| 1235 | * to setup colo-compare. |
| 1236 | */ |
| 1237 | static void colo_compare_complete(UserCreatable *uc, Error **errp) |
| 1238 | { |
| 1239 | CompareState *s = COLO_COMPARE(uc); |
Marc-André Lureau | 0ec7b3e | 2016-12-07 16:20:22 +0300 | [diff] [blame] | 1240 | Chardev *chr; |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1241 | |
Wang Yong | dd321ec | 2017-08-29 15:22:38 +0800 | [diff] [blame] | 1242 | if (!s->pri_indev || !s->sec_indev || !s->outdev || !s->iothread) { |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1243 | error_setg(errp, "colo compare needs 'primary_in' ," |
Wang Yong | dd321ec | 2017-08-29 15:22:38 +0800 | [diff] [blame] | 1244 | "'secondary_in','outdev','iothread' property set"); |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1245 | return; |
| 1246 | } else if (!strcmp(s->pri_indev, s->outdev) || |
| 1247 | !strcmp(s->sec_indev, s->outdev) || |
| 1248 | !strcmp(s->pri_indev, s->sec_indev)) { |
| 1249 | error_setg(errp, "'indev' and 'outdev' could not be same " |
| 1250 | "for compare module"); |
| 1251 | return; |
| 1252 | } |
| 1253 | |
Zhang Chen | 9cc43c9 | 2020-03-18 16:23:19 +0800 | [diff] [blame] | 1254 | if (!s->compare_timeout) { |
| 1255 | /* Set default value to 3000 MS */ |
| 1256 | s->compare_timeout = DEFAULT_TIME_OUT_MS; |
| 1257 | } |
| 1258 | |
Zhang Chen | cca35ac | 2020-03-18 16:23:20 +0800 | [diff] [blame] | 1259 | if (!s->expired_scan_cycle) { |
| 1260 | /* Set default value to 3000 MS */ |
| 1261 | s->expired_scan_cycle = REGULAR_PACKET_CHECK_MS; |
| 1262 | } |
| 1263 | |
Marc-André Lureau | 5345fdb | 2016-10-22 12:52:55 +0300 | [diff] [blame] | 1264 | if (find_and_check_chardev(&chr, s->pri_indev, errp) || |
| 1265 | !qemu_chr_fe_init(&s->chr_pri_in, chr, errp)) { |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1266 | return; |
| 1267 | } |
| 1268 | |
Marc-André Lureau | 5345fdb | 2016-10-22 12:52:55 +0300 | [diff] [blame] | 1269 | if (find_and_check_chardev(&chr, s->sec_indev, errp) || |
| 1270 | !qemu_chr_fe_init(&s->chr_sec_in, chr, errp)) { |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1271 | return; |
| 1272 | } |
| 1273 | |
Marc-André Lureau | 5345fdb | 2016-10-22 12:52:55 +0300 | [diff] [blame] | 1274 | if (find_and_check_chardev(&chr, s->outdev, errp) || |
| 1275 | !qemu_chr_fe_init(&s->chr_out, chr, errp)) { |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1276 | return; |
| 1277 | } |
| 1278 | |
Zhang Chen | aa3a703 | 2017-07-04 14:53:52 +0800 | [diff] [blame] | 1279 | net_socket_rs_init(&s->pri_rs, compare_pri_rs_finalize, s->vnet_hdr); |
| 1280 | net_socket_rs_init(&s->sec_rs, compare_sec_rs_finalize, s->vnet_hdr); |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1281 | |
Zhang Chen | 13025fe | 2019-06-10 00:44:30 +0800 | [diff] [blame] | 1282 | /* Try to enable remote notify chardev, currently just for Xen COLO */ |
| 1283 | if (s->notify_dev) { |
| 1284 | if (find_and_check_chardev(&chr, s->notify_dev, errp) || |
| 1285 | !qemu_chr_fe_init(&s->chr_notify_dev, chr, errp)) { |
| 1286 | return; |
| 1287 | } |
| 1288 | |
| 1289 | net_socket_rs_init(&s->notify_rs, compare_notify_rs_finalize, |
| 1290 | s->vnet_hdr); |
| 1291 | } |
| 1292 | |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 1293 | s->out_sendco.s = s; |
| 1294 | s->out_sendco.chr = &s->chr_out; |
| 1295 | s->out_sendco.notify_remote_frame = false; |
| 1296 | s->out_sendco.done = true; |
| 1297 | g_queue_init(&s->out_sendco.send_list); |
| 1298 | |
| 1299 | if (s->notify_dev) { |
| 1300 | s->notify_sendco.s = s; |
| 1301 | s->notify_sendco.chr = &s->chr_notify_dev; |
| 1302 | s->notify_sendco.notify_remote_frame = true; |
| 1303 | s->notify_sendco.done = true; |
| 1304 | g_queue_init(&s->notify_sendco.send_list); |
| 1305 | } |
| 1306 | |
Zhang Chen | b6540d4 | 2016-09-27 10:22:29 +0800 | [diff] [blame] | 1307 | g_queue_init(&s->conn_list); |
| 1308 | |
| 1309 | s->connection_track_table = g_hash_table_new_full(connection_key_hash, |
| 1310 | connection_key_equal, |
| 1311 | g_free, |
| 1312 | connection_destroy); |
Zhang Chen | 59509ec | 2016-09-27 10:22:27 +0800 | [diff] [blame] | 1313 | |
Wang Yong | dd321ec | 2017-08-29 15:22:38 +0800 | [diff] [blame] | 1314 | colo_compare_iothread(s); |
Lukas Straub | 5bd57eb | 2020-05-22 15:53:56 +0800 | [diff] [blame] | 1315 | |
| 1316 | qemu_mutex_lock(&colo_compare_mutex); |
| 1317 | if (!colo_compare_active) { |
| 1318 | qemu_mutex_init(&event_mtx); |
| 1319 | qemu_cond_init(&event_complete_cond); |
| 1320 | colo_compare_active = true; |
| 1321 | } |
| 1322 | QTAILQ_INSERT_TAIL(&net_compares, s, next); |
| 1323 | qemu_mutex_unlock(&colo_compare_mutex); |
| 1324 | |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1325 | return; |
| 1326 | } |
| 1327 | |
zhanghailiang | dfd917a | 2017-02-17 10:53:12 +0800 | [diff] [blame] | 1328 | static void colo_flush_packets(void *opaque, void *user_data) |
| 1329 | { |
| 1330 | CompareState *s = user_data; |
| 1331 | Connection *conn = opaque; |
| 1332 | Packet *pkt = NULL; |
| 1333 | |
| 1334 | while (!g_queue_is_empty(&conn->primary_list)) { |
| 1335 | pkt = g_queue_pop_head(&conn->primary_list); |
Zhang Chen | aa3a703 | 2017-07-04 14:53:52 +0800 | [diff] [blame] | 1336 | compare_chr_send(s, |
| 1337 | pkt->data, |
| 1338 | pkt->size, |
Zhang Chen | 30685c0 | 2019-06-10 00:44:31 +0800 | [diff] [blame] | 1339 | pkt->vnet_hdr_len, |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 1340 | false, |
| 1341 | true); |
| 1342 | packet_destroy_partial(pkt, NULL); |
zhanghailiang | dfd917a | 2017-02-17 10:53:12 +0800 | [diff] [blame] | 1343 | } |
| 1344 | while (!g_queue_is_empty(&conn->secondary_list)) { |
| 1345 | pkt = g_queue_pop_head(&conn->secondary_list); |
| 1346 | packet_destroy(pkt, NULL); |
| 1347 | } |
| 1348 | } |
| 1349 | |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1350 | static void colo_compare_class_init(ObjectClass *oc, void *data) |
| 1351 | { |
| 1352 | UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc); |
| 1353 | |
| 1354 | ucc->complete = colo_compare_complete; |
| 1355 | } |
| 1356 | |
| 1357 | static void colo_compare_init(Object *obj) |
| 1358 | { |
Zhang Chen | aa3a703 | 2017-07-04 14:53:52 +0800 | [diff] [blame] | 1359 | CompareState *s = COLO_COMPARE(obj); |
| 1360 | |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1361 | object_property_add_str(obj, "primary_in", |
Markus Armbruster | d262312 | 2020-05-05 17:29:22 +0200 | [diff] [blame] | 1362 | compare_get_pri_indev, compare_set_pri_indev); |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1363 | object_property_add_str(obj, "secondary_in", |
Markus Armbruster | d262312 | 2020-05-05 17:29:22 +0200 | [diff] [blame] | 1364 | compare_get_sec_indev, compare_set_sec_indev); |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1365 | object_property_add_str(obj, "outdev", |
Markus Armbruster | d262312 | 2020-05-05 17:29:22 +0200 | [diff] [blame] | 1366 | compare_get_outdev, compare_set_outdev); |
Wang Yong | dd321ec | 2017-08-29 15:22:38 +0800 | [diff] [blame] | 1367 | object_property_add_link(obj, "iothread", TYPE_IOTHREAD, |
| 1368 | (Object **)&s->iothread, |
| 1369 | object_property_allow_set_link, |
Markus Armbruster | d262312 | 2020-05-05 17:29:22 +0200 | [diff] [blame] | 1370 | OBJ_PROP_LINK_STRONG); |
Zhang Chen | cf6af76 | 2019-06-10 00:44:29 +0800 | [diff] [blame] | 1371 | /* This parameter just for Xen COLO */ |
| 1372 | object_property_add_str(obj, "notify_dev", |
Markus Armbruster | d262312 | 2020-05-05 17:29:22 +0200 | [diff] [blame] | 1373 | compare_get_notify_dev, compare_set_notify_dev); |
Zhang Chen | aa3a703 | 2017-07-04 14:53:52 +0800 | [diff] [blame] | 1374 | |
Zhang Chen | 9cc43c9 | 2020-03-18 16:23:19 +0800 | [diff] [blame] | 1375 | object_property_add(obj, "compare_timeout", "uint32", |
| 1376 | compare_get_timeout, |
Markus Armbruster | d262312 | 2020-05-05 17:29:22 +0200 | [diff] [blame] | 1377 | compare_set_timeout, NULL, NULL); |
Zhang Chen | 9cc43c9 | 2020-03-18 16:23:19 +0800 | [diff] [blame] | 1378 | |
Zhang Chen | cca35ac | 2020-03-18 16:23:20 +0800 | [diff] [blame] | 1379 | object_property_add(obj, "expired_scan_cycle", "uint32", |
| 1380 | compare_get_expired_scan_cycle, |
Markus Armbruster | d262312 | 2020-05-05 17:29:22 +0200 | [diff] [blame] | 1381 | compare_set_expired_scan_cycle, NULL, NULL); |
Zhang Chen | cca35ac | 2020-03-18 16:23:20 +0800 | [diff] [blame] | 1382 | |
Zhang Chen | aa3a703 | 2017-07-04 14:53:52 +0800 | [diff] [blame] | 1383 | s->vnet_hdr = false; |
| 1384 | object_property_add_bool(obj, "vnet_hdr_support", compare_get_vnet_hdr, |
Markus Armbruster | d262312 | 2020-05-05 17:29:22 +0200 | [diff] [blame] | 1385 | compare_set_vnet_hdr); |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1386 | } |
| 1387 | |
| 1388 | static void colo_compare_finalize(Object *obj) |
| 1389 | { |
| 1390 | CompareState *s = COLO_COMPARE(obj); |
Zhang Chen | 0ffcece | 2018-09-03 12:38:43 +0800 | [diff] [blame] | 1391 | CompareState *tmp = NULL; |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1392 | |
Lukas Straub | 45942b7 | 2020-05-22 15:53:55 +0800 | [diff] [blame] | 1393 | qemu_mutex_lock(&colo_compare_mutex); |
Zhang Chen | 0ffcece | 2018-09-03 12:38:43 +0800 | [diff] [blame] | 1394 | QTAILQ_FOREACH(tmp, &net_compares, next) { |
| 1395 | if (tmp == s) { |
| 1396 | QTAILQ_REMOVE(&net_compares, s, next); |
| 1397 | break; |
| 1398 | } |
| 1399 | } |
Lukas Straub | 45942b7 | 2020-05-22 15:53:55 +0800 | [diff] [blame] | 1400 | if (QTAILQ_EMPTY(&net_compares)) { |
| 1401 | colo_compare_active = false; |
| 1402 | qemu_mutex_destroy(&event_mtx); |
| 1403 | qemu_cond_destroy(&event_complete_cond); |
| 1404 | } |
| 1405 | qemu_mutex_unlock(&colo_compare_mutex); |
Zhang Chen | 0ffcece | 2018-09-03 12:38:43 +0800 | [diff] [blame] | 1406 | |
Lukas Straub | 5bd57eb | 2020-05-22 15:53:56 +0800 | [diff] [blame] | 1407 | qemu_chr_fe_deinit(&s->chr_pri_in, false); |
| 1408 | qemu_chr_fe_deinit(&s->chr_sec_in, false); |
| 1409 | qemu_chr_fe_deinit(&s->chr_out, false); |
| 1410 | if (s->notify_dev) { |
| 1411 | qemu_chr_fe_deinit(&s->chr_notify_dev, false); |
| 1412 | } |
| 1413 | |
| 1414 | if (s->iothread) { |
| 1415 | colo_compare_timer_del(s); |
| 1416 | } |
| 1417 | |
| 1418 | qemu_bh_delete(s->event_bh); |
| 1419 | |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 1420 | AioContext *ctx = iothread_get_aio_context(s->iothread); |
| 1421 | aio_context_acquire(ctx); |
| 1422 | AIO_WAIT_WHILE(ctx, !s->out_sendco.done); |
| 1423 | if (s->notify_dev) { |
| 1424 | AIO_WAIT_WHILE(ctx, !s->notify_sendco.done); |
| 1425 | } |
| 1426 | aio_context_release(ctx); |
| 1427 | |
zhanghailiang | dfd917a | 2017-02-17 10:53:12 +0800 | [diff] [blame] | 1428 | /* Release all unhandled packets after compare thead exited */ |
| 1429 | g_queue_foreach(&s->conn_list, colo_flush_packets, s); |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 1430 | AIO_WAIT_WHILE(NULL, !s->out_sendco.done); |
zhanghailiang | dfd917a | 2017-02-17 10:53:12 +0800 | [diff] [blame] | 1431 | |
Zhang Chen | 727c2d7 | 2017-02-22 13:16:06 +0800 | [diff] [blame] | 1432 | g_queue_clear(&s->conn_list); |
Lukas Straub | 9c55fe9 | 2020-05-22 15:53:53 +0800 | [diff] [blame] | 1433 | g_queue_clear(&s->out_sendco.send_list); |
| 1434 | if (s->notify_dev) { |
| 1435 | g_queue_clear(&s->notify_sendco.send_list); |
| 1436 | } |
Zhang Chen | b6540d4 | 2016-09-27 10:22:29 +0800 | [diff] [blame] | 1437 | |
Wang Yong | dd321ec | 2017-08-29 15:22:38 +0800 | [diff] [blame] | 1438 | if (s->connection_track_table) { |
| 1439 | g_hash_table_destroy(s->connection_track_table); |
| 1440 | } |
| 1441 | |
| 1442 | if (s->iothread) { |
| 1443 | object_unref(OBJECT(s->iothread)); |
| 1444 | } |
Zhang Chen | 0ffcece | 2018-09-03 12:38:43 +0800 | [diff] [blame] | 1445 | |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1446 | g_free(s->pri_indev); |
| 1447 | g_free(s->sec_indev); |
| 1448 | g_free(s->outdev); |
Zhang Chen | cf6af76 | 2019-06-10 00:44:29 +0800 | [diff] [blame] | 1449 | g_free(s->notify_dev); |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1450 | } |
| 1451 | |
Lukas Straub | 45942b7 | 2020-05-22 15:53:55 +0800 | [diff] [blame] | 1452 | static void __attribute__((__constructor__)) colo_compare_init_globals(void) |
| 1453 | { |
| 1454 | colo_compare_active = false; |
| 1455 | qemu_mutex_init(&colo_compare_mutex); |
| 1456 | } |
| 1457 | |
Zhang Chen | 7dce4e6 | 2016-09-27 10:22:26 +0800 | [diff] [blame] | 1458 | static const TypeInfo colo_compare_info = { |
| 1459 | .name = TYPE_COLO_COMPARE, |
| 1460 | .parent = TYPE_OBJECT, |
| 1461 | .instance_size = sizeof(CompareState), |
| 1462 | .instance_init = colo_compare_init, |
| 1463 | .instance_finalize = colo_compare_finalize, |
| 1464 | .class_size = sizeof(CompareClass), |
| 1465 | .class_init = colo_compare_class_init, |
| 1466 | .interfaces = (InterfaceInfo[]) { |
| 1467 | { TYPE_USER_CREATABLE }, |
| 1468 | { } |
| 1469 | } |
| 1470 | }; |
| 1471 | |
| 1472 | static void register_types(void) |
| 1473 | { |
| 1474 | type_register_static(&colo_compare_info); |
| 1475 | } |
| 1476 | |
| 1477 | type_init(register_types); |