* [Qemu-devel] [PULL 00/27] Net patches
@ 2016-09-26 8:59 Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 01/27] virtio-net: allow increasing rx queue size Jason Wang
` (27 more replies)
0 siblings, 28 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell; +Cc: qemu-devel, Jason Wang
The following changes since commit 3b71ec8516bb50e9a743645bf139571de0b39f61:
Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging (2016-09-23 16:15:33 +0100)
are available in the git repository at:
https://github.com/jasowang/qemu.git tags/net-pull-request
for you to fetch changes up to 172213e93226cf1fa0a230de5137020cd24ae715:
imx_fec: fix error in qemu_send_packet argument (2016-09-26 16:28:14 +0800)
----------------------------------------------------------------
- allow to specify the rx queue size for virtio-net
- colo packet comparing thread
- filter-writer to rewrite tcp seq for comparing and secondary VM
- align some e1000e behaviour to spec
- allow to specify bridge for a tap ifup script
----------------------------------------------------------------
Alexey Kardashevskiy (1):
tap: Allow specifying a bridge
Dmitry Fleytman (7):
e1000e: Flush all receive queues on receive enable
e1000e: Flush receive queues on link up
e1000e: Fix CTRL_EXT.EIAME behavior
e1000e: Fix PBACLR implementation
e1000e: Fix OTHER interrupts processing for MSI-X
e1000e: Fix spurious RX TCP ACK interrupts
e1000e: Fix EIAC register implementation
Gonglei (1):
e1000: fix buliding complaint
Michael S. Tsirkin (1):
virtio-net: allow increasing rx queue size
Paolo Bonzini (2):
mcf_fec: fix error in qemu_send_packet argument
imx_fec: fix error in qemu_send_packet argument
Peter Lieven (1):
net: limit allocation in nc_sendv_compat
Prasad J Pandit (1):
net: mcf: limit buffer descriptor count
Shmulik Ladkani (1):
net: hmp_host_net_remove: Del the -net option of the removed host_net
Zhang Chen (12):
qemu-char: Add qemu_chr_add_handlers_full() for GMaincontext
colo-compare: introduce colo compare initialization
net/colo.c: add colo.c to define and handle packet
Jhash: add linux kernel jhashtable in qemu
colo-compare: track connection and enqueue packet
colo-compare: introduce packet comparison thread
colo-compare: add TCP,UDP,ICMP packet comparison
filter-rewriter: introduce filter-rewriter initialization
filter-rewriter: track connection and parse packet
filter-rewriter: rewrite tcp packet to keep secondary connection
MAINTAINERS: add maintainer for COLO-proxy
docs: Add documentation for COLO-proxy
MAINTAINERS | 9 +
docs/colo-proxy.txt | 188 ++++++++++
hw/net/e1000e.c | 2 +-
hw/net/e1000e_core.c | 32 +-
hw/net/e1000e_core.h | 3 +
hw/net/imx_fec.c | 2 +-
hw/net/mcf_fec.c | 7 +-
hw/net/trace-events | 2 +-
hw/net/virtio-net.c | 26 +-
include/hw/virtio/virtio-net.h | 1 +
include/qemu/jhash.h | 59 ++++
include/sysemu/char.h | 11 +-
net/Makefile.objs | 3 +
net/colo-compare.c | 781 +++++++++++++++++++++++++++++++++++++++++
net/colo.c | 212 +++++++++++
net/colo.h | 88 +++++
net/filter-rewriter.c | 263 ++++++++++++++
net/net.c | 9 +-
net/tap.c | 4 +-
qapi-schema.json | 3 +
qemu-char.c | 77 ++--
qemu-options.hx | 64 +++-
trace-events | 16 +
vl.c | 4 +-
24 files changed, 1813 insertions(+), 53 deletions(-)
create mode 100644 docs/colo-proxy.txt
create mode 100644 include/qemu/jhash.h
create mode 100644 net/colo-compare.c
create mode 100644 net/colo.c
create mode 100644 net/colo.h
create mode 100644 net/filter-rewriter.c
^ permalink raw reply [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 01/27] virtio-net: allow increasing rx queue size
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 02/27] net: hmp_host_net_remove: Del the -net option of the removed host_net Jason Wang
` (26 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell; +Cc: qemu-devel, Michael S. Tsirkin, Cornelia Huck, Jason Wang
From: "Michael S. Tsirkin" <mst@redhat.com>
This allows increasing the rx queue size up to 1024: unlike with tx,
guests don't put in huge S/G lists into RX so the risk of running into
the max 1024 limitation due to some off-by-one seems small.
It's helpful for users like OVS-DPDK which don't do any buffering on the
host - 1K roughly matches 500 entries in tun + 256 in the current rx
queue, which seems to work reasonably well. We could probably make do
with ~750 entries but virtio spec limits us to powers of two.
It might be a good idea to specify an s/g size limit in a future
version.
It also might be possible to make the queue size smaller down the road, 64
seems like the minimal value which will still work (as guests seem to
assume a queue full of 1.5K buffers is enough to process the largest
incoming packet, which is ~64K). No one actually asked for this, and
with virtio 1 guests can reduce ring size without need for host
configuration, so don't bother with this for now.
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Jason Wang <jasowang@redhat.com>
Suggested-by: Patrik Hermansson <phermansson@gmail.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
hw/net/virtio-net.c | 26 +++++++++++++++++++++++++-
include/hw/virtio/virtio-net.h | 1 +
2 files changed, 26 insertions(+), 1 deletion(-)
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index 01f1351..6b8ae2c 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -31,6 +31,11 @@
#define MAC_TABLE_ENTRIES 64
#define MAX_VLAN (1 << 12) /* Per 802.1Q definition */
+/* previously fixed value */
+#define VIRTIO_NET_RX_QUEUE_DEFAULT_SIZE 256
+/* for now, only allow larger queues; with virtio-1, guest can downsize */
+#define VIRTIO_NET_RX_QUEUE_MIN_SIZE VIRTIO_NET_RX_QUEUE_DEFAULT_SIZE
+
/*
* Calculate the number of bytes up to and including the given 'field' of
* 'container'.
@@ -1412,7 +1417,8 @@ static void virtio_net_add_queue(VirtIONet *n, int index)
{
VirtIODevice *vdev = VIRTIO_DEVICE(n);
- n->vqs[index].rx_vq = virtio_add_queue(vdev, 256, virtio_net_handle_rx);
+ n->vqs[index].rx_vq = virtio_add_queue(vdev, n->net_conf.rx_queue_size,
+ virtio_net_handle_rx);
if (n->net_conf.tx && !strcmp(n->net_conf.tx, "timer")) {
n->vqs[index].tx_vq =
virtio_add_queue(vdev, 256, virtio_net_handle_tx_timer);
@@ -1720,6 +1726,22 @@ static void virtio_net_device_realize(DeviceState *dev, Error **errp)
virtio_net_set_config_size(n, n->host_features);
virtio_init(vdev, "virtio-net", VIRTIO_ID_NET, n->config_size);
+ /*
+ * We set a lower limit on RX queue size to what it always was.
+ * Guests that want a smaller ring can always resize it without
+ * help from us (using virtio 1 and up).
+ */
+ if (n->net_conf.rx_queue_size < VIRTIO_NET_RX_QUEUE_MIN_SIZE ||
+ n->net_conf.rx_queue_size > VIRTQUEUE_MAX_SIZE ||
+ (n->net_conf.rx_queue_size & (n->net_conf.rx_queue_size - 1))) {
+ error_setg(errp, "Invalid rx_queue_size (= %" PRIu16 "), "
+ "must be a power of 2 between %d and %d.",
+ n->net_conf.rx_queue_size, VIRTIO_NET_RX_QUEUE_MIN_SIZE,
+ VIRTQUEUE_MAX_SIZE);
+ virtio_cleanup(vdev);
+ return;
+ }
+
n->max_queues = MAX(n->nic_conf.peers.queues, 1);
if (n->max_queues * 2 + 1 > VIRTIO_QUEUE_MAX) {
error_setg(errp, "Invalid number of queues (= %" PRIu32 "), "
@@ -1880,6 +1902,8 @@ static Property virtio_net_properties[] = {
TX_TIMER_INTERVAL),
DEFINE_PROP_INT32("x-txburst", VirtIONet, net_conf.txburst, TX_BURST),
DEFINE_PROP_STRING("tx", VirtIONet, net_conf.tx),
+ DEFINE_PROP_UINT16("rx_queue_size", VirtIONet, net_conf.rx_queue_size,
+ VIRTIO_NET_RX_QUEUE_DEFAULT_SIZE),
DEFINE_PROP_END_OF_LIST(),
};
diff --git a/include/hw/virtio/virtio-net.h b/include/hw/virtio/virtio-net.h
index 91ed97c..0ced975 100644
--- a/include/hw/virtio/virtio-net.h
+++ b/include/hw/virtio/virtio-net.h
@@ -35,6 +35,7 @@ typedef struct virtio_net_conf
uint32_t txtimer;
int32_t txburst;
char *tx;
+ uint16_t rx_queue_size;
} virtio_net_conf;
/* Maximum packet size we can receive from tap device: header + 64k */
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 02/27] net: hmp_host_net_remove: Del the -net option of the removed host_net
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 01/27] virtio-net: allow increasing rx queue size Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 03/27] qemu-char: Add qemu_chr_add_handlers_full() for GMaincontext Jason Wang
` (25 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell; +Cc: qemu-devel, Shmulik Ladkani, Shmulik Ladkani, Jason Wang
From: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Upon hmp_host_net_remove(), the appropriate -net client is deleted
(according to the given vlan_id and device id), as well as the
corresponsing hub port.
However, the relevant '-net' option that was added by former
hmp_host_net_add() call is still present in "net" options group.
This makes the following legit HMP sequence erroneous:
(qemu) host_net_add tap id=n1,ifname=tap1,script=no,downscript=no,vlan=1
(qemu) host_net_remove 1 n1
(qemu) host_net_add tap id=n1,ifname=tap1,script=no,downscript=no,vlan=1
Duplicate ID 'n1' for net
Fix, by deleting the stored '-net' option associated with the given
device id.
Signed-off-by: Shmulik Ladkani <shmulik.ladkani@ravellosystems.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
net/net.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/net.c b/net/net.c
index d51cb29..0bec096 100644
--- a/net/net.c
+++ b/net/net.c
@@ -1179,6 +1179,7 @@ void hmp_host_net_remove(Monitor *mon, const QDict *qdict)
qemu_del_net_client(nc->peer);
qemu_del_net_client(nc);
+ qemu_opts_del(qemu_opts_find(qemu_find_opts("net"), device));
}
void netdev_add(QemuOpts *opts, Error **errp)
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 03/27] qemu-char: Add qemu_chr_add_handlers_full() for GMaincontext
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 01/27] virtio-net: allow increasing rx queue size Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 02/27] net: hmp_host_net_remove: Del the -net option of the removed host_net Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 04/27] colo-compare: introduce colo compare initialization Jason Wang
` (24 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell
Cc: qemu-devel, Zhang Chen, Li Zhijian, Wen Congyang, Jason Wang
From: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Add qemu_chr_add_handlers_full() API, we can use
this API pass in a GMainContext,make handler run
in the context rather than main_loop.
This comments from Daniel P . Berrange.
Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
include/sysemu/char.h | 11 +++++++-
qemu-char.c | 77 +++++++++++++++++++++++++++++++++++----------------
2 files changed, 63 insertions(+), 25 deletions(-)
diff --git a/include/sysemu/char.h b/include/sysemu/char.h
index ee7e554..0d0465a 100644
--- a/include/sysemu/char.h
+++ b/include/sysemu/char.h
@@ -65,7 +65,8 @@ struct CharDriverState {
int (*chr_sync_read)(struct CharDriverState *s,
const uint8_t *buf, int len);
GSource *(*chr_add_watch)(struct CharDriverState *s, GIOCondition cond);
- void (*chr_update_read_handler)(struct CharDriverState *s);
+ void (*chr_update_read_handler)(struct CharDriverState *s,
+ GMainContext *context);
int (*chr_ioctl)(struct CharDriverState *s, int cmd, void *arg);
int (*get_msgfds)(struct CharDriverState *s, int* fds, int num);
int (*set_msgfds)(struct CharDriverState *s, int *fds, int num);
@@ -422,6 +423,14 @@ void qemu_chr_add_handlers(CharDriverState *s,
IOEventHandler *fd_event,
void *opaque);
+/* This API can make handler run in the context what you pass to. */
+void qemu_chr_add_handlers_full(CharDriverState *s,
+ IOCanReadHandler *fd_can_read,
+ IOReadHandler *fd_read,
+ IOEventHandler *fd_event,
+ void *opaque,
+ GMainContext *context);
+
void qemu_chr_be_generic_open(CharDriverState *s);
void qemu_chr_accept_input(CharDriverState *s);
int qemu_chr_add_client(CharDriverState *s, int fd);
diff --git a/qemu-char.c b/qemu-char.c
index 8826419..fb456ce 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -449,11 +449,12 @@ void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
static void remove_fd_in_watch(CharDriverState *chr);
-void qemu_chr_add_handlers(CharDriverState *s,
- IOCanReadHandler *fd_can_read,
- IOReadHandler *fd_read,
- IOEventHandler *fd_event,
- void *opaque)
+void qemu_chr_add_handlers_full(CharDriverState *s,
+ IOCanReadHandler *fd_can_read,
+ IOReadHandler *fd_read,
+ IOEventHandler *fd_event,
+ void *opaque,
+ GMainContext *context)
{
int fe_open;
@@ -467,8 +468,9 @@ void qemu_chr_add_handlers(CharDriverState *s,
s->chr_read = fd_read;
s->chr_event = fd_event;
s->handler_opaque = opaque;
- if (fe_open && s->chr_update_read_handler)
- s->chr_update_read_handler(s);
+ if (fe_open && s->chr_update_read_handler) {
+ s->chr_update_read_handler(s, context);
+ }
if (!s->explicit_fe_open) {
qemu_chr_fe_set_open(s, fe_open);
@@ -481,6 +483,16 @@ void qemu_chr_add_handlers(CharDriverState *s,
}
}
+void qemu_chr_add_handlers(CharDriverState *s,
+ IOCanReadHandler *fd_can_read,
+ IOReadHandler *fd_read,
+ IOEventHandler *fd_event,
+ void *opaque)
+{
+ qemu_chr_add_handlers_full(s, fd_can_read, fd_read,
+ fd_event, opaque, NULL);
+}
+
static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
{
return len;
@@ -722,7 +734,8 @@ static void mux_chr_event(void *opaque, int event)
mux_chr_send_event(d, i, event);
}
-static void mux_chr_update_read_handler(CharDriverState *chr)
+static void mux_chr_update_read_handler(CharDriverState *chr,
+ GMainContext *context)
{
MuxDriver *d = chr->opaque;
@@ -736,8 +749,10 @@ static void mux_chr_update_read_handler(CharDriverState *chr)
d->chr_event[d->mux_cnt] = chr->chr_event;
/* Fix up the real driver with mux routines */
if (d->mux_cnt == 0) {
- qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
- mux_chr_event, chr);
+ qemu_chr_add_handlers_full(d->drv, mux_chr_can_read,
+ mux_chr_read,
+ mux_chr_event,
+ chr, context);
}
if (d->focus != -1) {
mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
@@ -853,6 +868,7 @@ typedef struct IOWatchPoll
IOCanReadHandler *fd_can_read;
GSourceFunc fd_read;
void *opaque;
+ GMainContext *context;
} IOWatchPoll;
static IOWatchPoll *io_watch_poll_from_source(GSource *source)
@@ -860,7 +876,8 @@ static IOWatchPoll *io_watch_poll_from_source(GSource *source)
return container_of(source, IOWatchPoll, parent);
}
-static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
+static gboolean io_watch_poll_prepare(GSource *source,
+ gint *timeout_)
{
IOWatchPoll *iwp = io_watch_poll_from_source(source);
bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
@@ -873,7 +890,7 @@ static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
iwp->src = qio_channel_create_watch(
iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
- g_source_attach(iwp->src, NULL);
+ g_source_attach(iwp->src, iwp->context);
} else {
g_source_destroy(iwp->src);
g_source_unref(iwp->src);
@@ -920,19 +937,22 @@ static GSourceFuncs io_watch_poll_funcs = {
static guint io_add_watch_poll(QIOChannel *ioc,
IOCanReadHandler *fd_can_read,
QIOChannelFunc fd_read,
- gpointer user_data)
+ gpointer user_data,
+ GMainContext *context)
{
IOWatchPoll *iwp;
int tag;
- iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
+ iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs,
+ sizeof(IOWatchPoll));
iwp->fd_can_read = fd_can_read;
iwp->opaque = user_data;
iwp->ioc = ioc;
iwp->fd_read = (GSourceFunc) fd_read;
iwp->src = NULL;
+ iwp->context = context;
- tag = g_source_attach(&iwp->parent, NULL);
+ tag = g_source_attach(&iwp->parent, context);
g_source_unref(&iwp->parent);
return tag;
}
@@ -1064,7 +1084,8 @@ static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
return qio_channel_create_watch(s->ioc_out, cond);
}
-static void fd_chr_update_read_handler(CharDriverState *chr)
+static void fd_chr_update_read_handler(CharDriverState *chr,
+ GMainContext *context)
{
FDCharDriver *s = chr->opaque;
@@ -1072,7 +1093,8 @@ static void fd_chr_update_read_handler(CharDriverState *chr)
if (s->ioc_in) {
chr->fd_in_tag = io_add_watch_poll(s->ioc_in,
fd_chr_read_poll,
- fd_chr_read, chr);
+ fd_chr_read, chr,
+ context);
}
}
@@ -1319,7 +1341,8 @@ static void pty_chr_update_read_handler_locked(CharDriverState *chr)
}
}
-static void pty_chr_update_read_handler(CharDriverState *chr)
+static void pty_chr_update_read_handler(CharDriverState *chr,
+ GMainContext *context)
{
qemu_mutex_lock(&chr->chr_write_lock);
pty_chr_update_read_handler_locked(chr);
@@ -1423,7 +1446,8 @@ static void pty_chr_state(CharDriverState *chr, int connected)
if (!chr->fd_in_tag) {
chr->fd_in_tag = io_add_watch_poll(s->ioc,
pty_chr_read_poll,
- pty_chr_read, chr);
+ pty_chr_read,
+ chr, NULL);
}
}
}
@@ -2565,7 +2589,8 @@ static gboolean udp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
return TRUE;
}
-static void udp_chr_update_read_handler(CharDriverState *chr)
+static void udp_chr_update_read_handler(CharDriverState *chr,
+ GMainContext *context)
{
NetCharDriver *s = chr->opaque;
@@ -2573,7 +2598,8 @@ static void udp_chr_update_read_handler(CharDriverState *chr)
if (s->ioc) {
chr->fd_in_tag = io_add_watch_poll(s->ioc,
udp_chr_read_poll,
- udp_chr_read, chr);
+ udp_chr_read, chr,
+ context);
}
}
@@ -2976,12 +3002,14 @@ static void tcp_chr_connect(void *opaque)
if (s->ioc) {
chr->fd_in_tag = io_add_watch_poll(s->ioc,
tcp_chr_read_poll,
- tcp_chr_read, chr);
+ tcp_chr_read,
+ chr, NULL);
}
qemu_chr_be_generic_open(chr);
}
-static void tcp_chr_update_read_handler(CharDriverState *chr)
+static void tcp_chr_update_read_handler(CharDriverState *chr,
+ GMainContext *context)
{
TCPCharDriver *s = chr->opaque;
@@ -2993,7 +3021,8 @@ static void tcp_chr_update_read_handler(CharDriverState *chr)
if (s->ioc) {
chr->fd_in_tag = io_add_watch_poll(s->ioc,
tcp_chr_read_poll,
- tcp_chr_read, chr);
+ tcp_chr_read, chr,
+ context);
}
}
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 04/27] colo-compare: introduce colo compare initialization
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (2 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 03/27] qemu-char: Add qemu_chr_add_handlers_full() for GMaincontext Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 05/27] net/colo.c: add colo.c to define and handle packet Jason Wang
` (23 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell
Cc: qemu-devel, Zhang Chen, Li Zhijian, Wen Congyang, Jason Wang
From: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
This a COLO net ascii figure:
Primary qemu Secondary qemu
+--------------------------------------------------------------+ +----------------------------------------------------------------+
| +----------------------------------------------------------+ | | +-----------------------------------------------------------+ |
| | | | | | | |
| | guest | | | | guest | |
| | | | | | | |
| +-------^--------------------------+-----------------------+ | | +---------------------+--------+----------------------------+ |
| | | | | ^ | |
| | | | | | | |
| | +------------------------------------------------------+ | | | |
|netfilter| | | | | | netfilter | | |
| +----------+ +----------------------------+ | | | +-----------------------------------------------------------+ |
| | | | | | out | | | | | | filter excute order | |
| | | | +-----------------------------+ | | | | | | +-------------------> | |
| | | | | | | | | | | | | | TCP | |
| | +-----+--+-+ +-----v----+ +-----v----+ |pri +----+----+sec| | | | +------------+ +---+----+---v+rewriter++ +------------+ | |
| | | | | | | | |in | |in | | | | | | | | | | | | |
| | | filter | | filter | | filter +------> colo <------+ +--------> filter +--> adjust | adjust +--> filter | | |
| | | mirror | |redirector| |redirector| | | compare | | | | | | redirector | | ack | seq | | redirector | | |
| | | | | | | | | | | | | | | | | | | | | | | |
| | +----^-----+ +----+-----+ +----------+ | +---------+ | | | | +------------+ +--------+--------------+ +---+--------+ | |
| | | tx | rx rx | | | | | tx all | rx | |
| | | | | | | | +-----------------------------------------------------------+ |
| | | +--------------+ | | | | | |
| | | filter excute order | | | | | | |
| | | +----------------> | | | +--------------------------------------------------------+ |
| +-----------------------------------------+ | | |
| | | | | |
+--------------------------------------------------------------+ +----------------------------------------------------------------+
|guest receive | guest send
| |
+--------+----------------------------v------------------------+
| | NOTE: filter direction is rx/tx/all
| tap | rx:receive packets sent to the netdev
| | tx:receive packets sent by the netdev
+--------------------------------------------------------------+
In COLO-compare, we do packet comparing job.
Packets coming from the primary char indev will be sent to outdev.
Packets coming from the secondary char dev will be dropped after comparing.
colo-comapre need two input chardev and one output chardev:
primary_in=chardev1-id (source: primary send packet)
secondary_in=chardev2-id (source: secondary send packet)
outdev=chardev3-id
usage:
primary:
-netdev tap,id=hn0,vhost=off,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown
-device e1000,id=e0,netdev=hn0,mac=52:a4:00:12:78:66
-chardev socket,id=mirror0,host=3.3.3.3,port=9003,server,nowait
-chardev socket,id=compare1,host=3.3.3.3,port=9004,server,nowait
-chardev socket,id=compare0,host=3.3.3.3,port=9001,server,nowait
-chardev socket,id=compare0-0,host=3.3.3.3,port=9001
-chardev socket,id=compare_out,host=3.3.3.3,port=9005,server,nowait
-chardev socket,id=compare_out0,host=3.3.3.3,port=9005
-object filter-mirror,id=m0,netdev=hn0,queue=tx,outdev=mirror0
-object filter-redirector,netdev=hn0,id=redire0,queue=rx,indev=compare_out
-object filter-redirector,netdev=hn0,id=redire1,queue=rx,outdev=compare0
-object colo-compare,id=comp0,primary_in=compare0-0,secondary_in=compare1,outdev=compare_out0
secondary:
-netdev tap,id=hn0,vhost=off,script=/etc/qemu-ifup,down script=/etc/qemu-ifdown
-device e1000,netdev=hn0,mac=52:a4:00:12:78:66
-chardev socket,id=red0,host=3.3.3.3,port=9003
-chardev socket,id=red1,host=3.3.3.3,port=9004
-object filter-redirector,id=f1,netdev=hn0,queue=tx,indev=red0
-object filter-redirector,id=f2,netdev=hn0,queue=rx,outdev=red1
Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
net/Makefile.objs | 1 +
net/colo-compare.c | 270 +++++++++++++++++++++++++++++++++++++++++++++++++++++
qemu-options.hx | 39 ++++++++
vl.c | 3 +-
4 files changed, 312 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..dc5f70c
--- /dev/null
+++ b/net/colo-compare.c
@@ -0,0 +1,270 @@
+/*
+ * 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 <zhangchen.fnst@cn.fujitsu.com>
+ *
+ * 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 "qemu-common.h"
+#include "qapi/qmp/qerror.h"
+#include "qapi/error.h"
+#include "net/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"
+#include "qapi-visit.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
+
+typedef struct CompareState {
+ Object parent;
+
+ char *pri_indev;
+ char *sec_indev;
+ char *outdev;
+ CharDriverState *chr_pri_in;
+ CharDriverState *chr_sec_in;
+ CharDriverState *chr_out;
+ SocketReadState pri_rs;
+ SocketReadState sec_rs;
+} CompareState;
+
+typedef struct CompareClass {
+ ObjectClass parent_class;
+} CompareClass;
+
+typedef struct CompareChardevProps {
+ bool is_socket;
+} CompareChardevProps;
+
+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 compare_pri_rs_finalize(SocketReadState *pri_rs)
+{
+ /* if packet_enqueue pri pkt failed we will send unsupported packet */
+}
+
+static void compare_sec_rs_finalize(SocketReadState *sec_rs)
+{
+ /* if packet_enqueue sec pkt failed we will notify trace */
+}
+
+static int compare_chardev_opts(void *opaque,
+ const char *name, const char *value,
+ Error **errp)
+{
+ CompareChardevProps *props = opaque;
+
+ if (strcmp(name, "backend") == 0 &&
+ strcmp(value, "socket") == 0) {
+ props->is_socket = true;
+ return 0;
+ } else if (strcmp(name, "host") == 0 ||
+ (strcmp(name, "port") == 0) ||
+ (strcmp(name, "server") == 0) ||
+ (strcmp(name, "wait") == 0) ||
+ (strcmp(name, "path") == 0)) {
+ return 0;
+ } else {
+ error_setg(errp,
+ "COLO-compare does not support a chardev with option %s=%s",
+ name, value);
+ return -1;
+ }
+}
+
+/*
+ * Return 0 is success.
+ * Return 1 is failed.
+ */
+static int find_and_check_chardev(CharDriverState **chr,
+ char *chr_name,
+ Error **errp)
+{
+ CompareChardevProps props;
+
+ *chr = qemu_chr_find(chr_name);
+ if (*chr == NULL) {
+ error_setg(errp, "Device '%s' not found",
+ chr_name);
+ return 1;
+ }
+
+ memset(&props, 0, sizeof(props));
+ if (qemu_opt_foreach((*chr)->opts, compare_chardev_opts, &props, errp)) {
+ return 1;
+ }
+
+ if (!props.is_socket) {
+ error_setg(errp, "chardev \"%s\" is not a tcp socket",
+ chr_name);
+ return 1;
+ }
+ return 0;
+}
+
+/*
+ * Called from the main thread on the primary
+ * to setup colo-compare.
+ */
+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;
+ }
+
+ if (find_and_check_chardev(&s->chr_pri_in, s->pri_indev, errp)) {
+ return;
+ }
+
+ if (find_and_check_chardev(&s->chr_sec_in, s->sec_indev, errp)) {
+ return;
+ }
+
+ if (find_and_check_chardev(&s->chr_out, s->outdev, errp)) {
+ return;
+ }
+
+ qemu_chr_fe_claim_no_fail(s->chr_pri_in);
+
+ qemu_chr_fe_claim_no_fail(s->chr_sec_in);
+
+ qemu_chr_fe_claim_no_fail(s->chr_out);
+
+ net_socket_rs_init(&s->pri_rs, compare_pri_rs_finalize);
+ net_socket_rs_init(&s->sec_rs, compare_sec_rs_finalize);
+
+ return;
+}
+
+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_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);
+
+ 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);
+ }
+
+ 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(CompareClass),
+ .class_init = colo_compare_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_USER_CREATABLE },
+ { }
+ }
+};
+
+static void register_types(void)
+{
+ type_register_static(&colo_compare_info);
+}
+
+type_init(register_types);
diff --git a/qemu-options.hx b/qemu-options.hx
index 0b621bb..d0ed69a 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -3894,6 +3894,45 @@ Dump the network traffic on netdev @var{dev} to the file specified by
The file format is libpcap, so it can be analyzed with tools such as tcpdump
or Wireshark.
+@item -object colo-compare,id=@var{id},primary_in=@var{chardevid},secondary_in=@var{chardevid},
+outdev=@var{chardevid}
+
+Colo-compare gets packet from primary_in@var{chardevid} and secondary_in@var{chardevid}, than compare primary packet with
+secondary packet. If the packets are same, we will output primary
+packet to outdev@var{chardevid}, else we will notify colo-frame
+do checkpoint and send primary packet to outdev@var{chardevid}.
+
+we must use it with the help of filter-mirror and filter-redirector.
+
+@example
+
+primary:
+-netdev tap,id=hn0,vhost=off,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown
+-device e1000,id=e0,netdev=hn0,mac=52:a4:00:12:78:66
+-chardev socket,id=mirror0,host=3.3.3.3,port=9003,server,nowait
+-chardev socket,id=compare1,host=3.3.3.3,port=9004,server,nowait
+-chardev socket,id=compare0,host=3.3.3.3,port=9001,server,nowait
+-chardev socket,id=compare0-0,host=3.3.3.3,port=9001
+-chardev socket,id=compare_out,host=3.3.3.3,port=9005,server,nowait
+-chardev socket,id=compare_out0,host=3.3.3.3,port=9005
+-object filter-mirror,id=m0,netdev=hn0,queue=tx,outdev=mirror0
+-object filter-redirector,netdev=hn0,id=redire0,queue=rx,indev=compare_out
+-object filter-redirector,netdev=hn0,id=redire1,queue=rx,outdev=compare0
+-object colo-compare,id=comp0,primary_in=compare0-0,secondary_in=compare1,outdev=compare_out0
+
+secondary:
+-netdev tap,id=hn0,vhost=off,script=/etc/qemu-ifup,down script=/etc/qemu-ifdown
+-device e1000,netdev=hn0,mac=52:a4:00:12:78:66
+-chardev socket,id=red0,host=3.3.3.3,port=9003
+-chardev socket,id=red1,host=3.3.3.3,port=9004
+-object filter-redirector,id=f1,netdev=hn0,queue=tx,indev=red0
+-object filter-redirector,id=f2,netdev=hn0,queue=rx,outdev=red1
+
+@end example
+
+If you want to know the detail of above command line, you can read
+the colo-compare git log.
+
@item -object secret,id=@var{id},data=@var{string},format=@var{raw|base64}[,keyid=@var{secretid},iv=@var{string}]
@item -object secret,id=@var{id},file=@var{filename},format=@var{raw|base64}[,keyid=@var{secretid},iv=@var{string}]
diff --git a/vl.c b/vl.c
index 215a6f9..7dadb9e 100644
--- a/vl.c
+++ b/vl.c
@@ -2845,7 +2845,8 @@ 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;
}
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 05/27] net/colo.c: add colo.c to define and handle packet
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (3 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 04/27] colo-compare: introduce colo compare initialization Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 06/27] Jhash: add linux kernel jhashtable in qemu Jason Wang
` (22 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell
Cc: qemu-devel, Zhang Chen, Li Zhijian, Wen Congyang, Jason Wang
From: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
The net/colo.c is used by colo-compare and filter-rewriter.
this can share common data structure like net packet,
and other functions.
Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
net/Makefile.objs | 1 +
net/colo-compare.c | 114 +++++++++++++++++++++++++++++++++++++++++++++++++++--
net/colo.c | 86 ++++++++++++++++++++++++++++++++++++++++
net/colo.h | 37 +++++++++++++++++
trace-events | 6 +++
5 files changed, 240 insertions(+), 4 deletions(-)
create mode 100644 net/colo.c
create mode 100644 net/colo.h
diff --git a/net/Makefile.objs b/net/Makefile.objs
index ba92f73..beb504b 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.o
diff --git a/net/colo-compare.c b/net/colo-compare.c
index dc5f70c..cea9b27 100644
--- a/net/colo-compare.c
+++ b/net/colo-compare.c
@@ -14,6 +14,7 @@
#include "qemu/osdep.h"
#include "qemu/error-report.h"
+#include "trace.h"
#include "qemu-common.h"
#include "qapi/qmp/qerror.h"
#include "qapi/error.h"
@@ -26,13 +27,34 @@
#include "sysemu/char.h"
#include "qemu/sockets.h"
#include "qapi-visit.h"
+#include "net/colo.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
-
+/*
+ + 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;
@@ -44,6 +66,9 @@ typedef struct CompareState {
CharDriverState *chr_out;
SocketReadState pri_rs;
SocketReadState sec_rs;
+
+ /* hashtable to save connection */
+ GHashTable *connection_track_table;
} CompareState;
typedef struct CompareClass {
@@ -54,6 +79,76 @@ typedef struct CompareChardevProps {
bool is_socket;
} CompareChardevProps;
+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);
@@ -101,12 +196,21 @@ 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");
+ }
}
static int compare_chardev_opts(void *opaque,
@@ -204,6 +308,8 @@ 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);
+ /* use g_hash_table_new_full() to new a hashtable */
+
return;
}
diff --git a/net/colo.c b/net/colo.c
new file mode 100644
index 0000000..8582175
--- /dev/null
+++ b/net/colo.c
@@ -0,0 +1,86 @@
+/*
+ * 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 <zhangchen.fnst@cn.fujitsu.com>
+ *
+ * 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 "trace.h"
+#include "net/colo.h"
+
+int parse_packet_early(Packet *pkt)
+{
+ int network_length;
+ static const uint8_t vlan[] = {0x81, 0x00};
+ uint8_t *data = pkt->data;
+ uint16_t l3_proto;
+ ssize_t l2hdr_len = eth_get_l2_hdr_length(data);
+
+ if (pkt->size < ETH_HLEN) {
+ trace_colo_proxy_main("pkt->size < ETH_HLEN");
+ return 1;
+ }
+
+ /*
+ * TODO: support vlan.
+ */
+ if (!memcmp(&data[12], vlan, sizeof(vlan))) {
+ trace_colo_proxy_main("COLO-proxy don't support vlan");
+ return 1;
+ }
+
+ pkt->network_header = data + l2hdr_len;
+
+ const struct iovec l2vec = {
+ .iov_base = (void *) data,
+ .iov_len = l2hdr_len
+ };
+ l3_proto = eth_get_l3_proto(&l2vec, 1, l2hdr_len);
+
+ if (l3_proto != ETH_P_IP) {
+ return 1;
+ }
+
+ network_length = pkt->ip->ip_hl * 4;
+ if (pkt->size < l2hdr_len + network_length) {
+ trace_colo_proxy_main("pkt->size < network_header + network_length");
+ return 1;
+ }
+ pkt->transport_header = pkt->network_header + network_length;
+
+ 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.h b/net/colo.h
new file mode 100644
index 0000000..e211eda
--- /dev/null
+++ b/net/colo.h
@@ -0,0 +1,37 @@
+/*
+ * 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 <zhangchen.fnst@cn.fujitsu.com>
+ *
+ * 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_PROXY_H
+#define QEMU_COLO_PROXY_H
+
+#include "slirp/slirp.h"
+
+#define HASHTABLE_MAX_SIZE 16384
+
+typedef struct Packet {
+ void *data;
+ union {
+ uint8_t *network_header;
+ struct ip *ip;
+ };
+ uint8_t *transport_header;
+ 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_PROXY_H */
diff --git a/trace-events b/trace-events
index 8d59631..9b4186f 100644
--- a/trace-events
+++ b/trace-events
@@ -139,6 +139,12 @@ memory_region_subpage_write(int cpu_index, void *mr, uint64_t offset, uint64_t v
memory_region_tb_read(int cpu_index, uint64_t addr, uint64_t value, unsigned size) "cpu %d addr %#"PRIx64" value %#"PRIx64" size %u"
memory_region_tb_write(int cpu_index, uint64_t addr, uint64_t value, unsigned size) "cpu %d addr %#"PRIx64" value %#"PRIx64" size %u"
+# net/colo.c
+colo_proxy_main(const char *chr) ": %s"
+
+# net/colo-compare.c
+colo_compare_main(const char *chr) ": %s"
+
### Guest events, keep at bottom
# @vaddr: Access' virtual address.
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 06/27] Jhash: add linux kernel jhashtable in qemu
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (4 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 05/27] net/colo.c: add colo.c to define and handle packet Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 07/27] colo-compare: track connection and enqueue packet Jason Wang
` (21 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell
Cc: qemu-devel, Zhang Chen, Li Zhijian, Wen Congyang, Jason Wang
From: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Jhash will be used by colo-compare and filter-rewriter
to save and lookup net connection info
Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
include/qemu/jhash.h | 59 ++++++++++++++++++++++++++++++++++++++++++++++++++++
net/colo.h | 1 +
2 files changed, 60 insertions(+)
create mode 100644 include/qemu/jhash.h
diff --git a/include/qemu/jhash.h b/include/qemu/jhash.h
new file mode 100644
index 0000000..7222242
--- /dev/null
+++ b/include/qemu/jhash.h
@@ -0,0 +1,59 @@
+/* jhash.h: Jenkins hash support.
+ *
+ * Copyright (C) 2006. Bob Jenkins (bob_jenkins@burtleburtle.net)
+ *
+ * http://burtleburtle.net/bob/hash/
+ *
+ * These are the credits from Bob's sources:
+ *
+ * lookup3.c, by Bob Jenkins, May 2006, Public Domain.
+ *
+ * These are functions for producing 32-bit hashes for hash table lookup.
+ * hashword(), hashlittle(), hashlittle2(), hashbig(), mix(), and final()
+ * are externally useful functions. Routines to test the hash are included
+ * if SELF_TEST is defined. You can use this free for any purpose. It's in
+ * the public domain. It has no warranty.
+ *
+ * Copyright (C) 2009-2010 Jozsef Kadlecsik (kadlec@blackhole.kfki.hu)
+ *
+ * I've modified Bob's hash to be useful in the Linux kernel, and
+ * any bugs present are my fault.
+ * Jozsef
+ */
+
+#ifndef QEMU_JHASH_H__
+#define QEMU_JHASH_H__
+
+#include "qemu/bitops.h"
+
+/*
+ * hashtable relation copy from linux kernel jhash
+ */
+
+/* __jhash_mix -- mix 3 32-bit values reversibly. */
+#define __jhash_mix(a, b, c) \
+{ \
+ a -= c; a ^= rol32(c, 4); c += b; \
+ b -= a; b ^= rol32(a, 6); a += c; \
+ c -= b; c ^= rol32(b, 8); b += a; \
+ a -= c; a ^= rol32(c, 16); c += b; \
+ b -= a; b ^= rol32(a, 19); a += c; \
+ c -= b; c ^= rol32(b, 4); b += a; \
+}
+
+/* __jhash_final - final mixing of 3 32-bit values (a,b,c) into c */
+#define __jhash_final(a, b, c) \
+{ \
+ c ^= b; c -= rol32(b, 14); \
+ a ^= c; a -= rol32(c, 11); \
+ b ^= a; b -= rol32(a, 25); \
+ c ^= b; c -= rol32(b, 16); \
+ a ^= c; a -= rol32(c, 4); \
+ b ^= a; b -= rol32(a, 14); \
+ c ^= b; c -= rol32(b, 24); \
+}
+
+/* An arbitrary initial parameter */
+#define JHASH_INITVAL 0xdeadbeef
+
+#endif /* QEMU_JHASH_H__ */
diff --git a/net/colo.h b/net/colo.h
index e211eda..05dc0b6 100644
--- a/net/colo.h
+++ b/net/colo.h
@@ -16,6 +16,7 @@
#define QEMU_COLO_PROXY_H
#include "slirp/slirp.h"
+#include "qemu/jhash.h"
#define HASHTABLE_MAX_SIZE 16384
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 07/27] colo-compare: track connection and enqueue packet
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (5 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 06/27] Jhash: add linux kernel jhashtable in qemu Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 08/27] colo-compare: introduce packet comparison thread Jason Wang
` (20 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell
Cc: qemu-devel, Zhang Chen, Li Zhijian, Wen Congyang, Jason Wang
From: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
In this patch we use kernel jhash table to track
connection, and then enqueue net packet like this:
+ 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 +
+--------+ +--------+ +--------+ +--------+
We use conn_list to record connection info.
When we want to enqueue a packet, firstly get the
connection from connection_track_table. then push
the packet to g_queue(pri/sec) in it's own conn.
Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
net/colo-compare.c | 53 +++++++++++++++++++++-----
net/colo.c | 109 +++++++++++++++++++++++++++++++++++++++++++++++++++++
net/colo.h | 39 +++++++++++++++++++
3 files changed, 191 insertions(+), 10 deletions(-)
diff --git a/net/colo-compare.c b/net/colo-compare.c
index cea9b27..231654c 100644
--- a/net/colo-compare.c
+++ b/net/colo-compare.c
@@ -33,6 +33,8 @@
#define COLO_COMPARE(obj) \
OBJECT_CHECK(CompareState, (obj), TYPE_COLO_COMPARE)
+#define MAX_QUEUE_SIZE 1024
+
/*
+ CompareState ++
| |
@@ -67,6 +69,11 @@ typedef struct CompareState {
SocketReadState pri_rs;
SocketReadState sec_rs;
+ /* connection list: the connections belonged to this NIC could be found
+ * in this list.
+ * element type: Connection
+ */
+ GQueue conn_list;
/* hashtable to save connection */
GHashTable *connection_track_table;
} CompareState;
@@ -94,7 +101,9 @@ static int compare_chr_send(CharDriverState *out,
*/
static int packet_enqueue(CompareState *s, int mode)
{
+ ConnectionKey key = { 0 };
Packet *pkt = NULL;
+ Connection *conn;
if (mode == PRIMARY_IN) {
pkt = packet_new(s->pri_rs.buf, s->pri_rs.packet_len);
@@ -107,17 +116,34 @@ static int packet_enqueue(CompareState *s, int mode)
pkt = NULL;
return -1;
}
- /* TODO: get connection key from pkt */
+ fill_connection_key(pkt, &key);
- /*
- * TODO: use connection key get conn from
- * connection_track_table
- */
+ conn = connection_get(s->connection_track_table,
+ &key,
+ &s->conn_list);
- /*
- * TODO: insert pkt to it's conn->primary_list
- * or conn->secondary_list
- */
+ if (!conn->processing) {
+ g_queue_push_tail(&s->conn_list, conn);
+ conn->processing = true;
+ }
+
+ if (mode == PRIMARY_IN) {
+ if (g_queue_get_length(&conn->primary_list) <=
+ MAX_QUEUE_SIZE) {
+ g_queue_push_tail(&conn->primary_list, pkt);
+ } else {
+ error_report("colo compare primary queue size too big,"
+ "drop packet");
+ }
+ } else {
+ if (g_queue_get_length(&conn->secondary_list) <=
+ MAX_QUEUE_SIZE) {
+ g_queue_push_tail(&conn->secondary_list, pkt);
+ } else {
+ error_report("colo compare secondary queue size too big,"
+ "drop packet");
+ }
+ }
return 0;
}
@@ -308,7 +334,12 @@ 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);
- /* use g_hash_table_new_full() to new a hashtable */
+ g_queue_init(&s->conn_list);
+
+ s->connection_track_table = g_hash_table_new_full(connection_key_hash,
+ connection_key_equal,
+ g_free,
+ connection_destroy);
return;
}
@@ -349,6 +380,8 @@ static void colo_compare_finalize(Object *obj)
qemu_chr_fe_release(s->chr_out);
}
+ g_queue_free(&s->conn_list);
+
g_free(s->pri_indev);
g_free(s->sec_indev);
g_free(s->outdev);
diff --git a/net/colo.c b/net/colo.c
index 8582175..13a8090 100644
--- a/net/colo.c
+++ b/net/colo.c
@@ -16,6 +16,29 @@
#include "trace.h"
#include "net/colo.h"
+uint32_t connection_key_hash(const void *opaque)
+{
+ const ConnectionKey *key = opaque;
+ uint32_t a, b, c;
+
+ /* Jenkins hash */
+ a = b = c = JHASH_INITVAL + sizeof(*key);
+ a += key->src.s_addr;
+ b += key->dst.s_addr;
+ c += (key->src_port | key->dst_port << 16);
+ __jhash_mix(a, b, c);
+
+ a += key->ip_proto;
+ __jhash_final(a, b, c);
+
+ return c;
+}
+
+int connection_key_equal(const void *key1, const void *key2)
+{
+ return memcmp(key1, key2, sizeof(ConnectionKey)) == 0;
+}
+
int parse_packet_early(Packet *pkt)
{
int network_length;
@@ -59,6 +82,62 @@ int parse_packet_early(Packet *pkt)
return 0;
}
+void fill_connection_key(Packet *pkt, ConnectionKey *key)
+{
+ uint32_t tmp_ports;
+
+ key->ip_proto = pkt->ip->ip_p;
+
+ switch (key->ip_proto) {
+ case IPPROTO_TCP:
+ case IPPROTO_UDP:
+ case IPPROTO_DCCP:
+ case IPPROTO_ESP:
+ case IPPROTO_SCTP:
+ case IPPROTO_UDPLITE:
+ tmp_ports = *(uint32_t *)(pkt->transport_header);
+ key->src = pkt->ip->ip_src;
+ key->dst = pkt->ip->ip_dst;
+ key->src_port = ntohs(tmp_ports & 0xffff);
+ key->dst_port = ntohs(tmp_ports >> 16);
+ break;
+ case IPPROTO_AH:
+ tmp_ports = *(uint32_t *)(pkt->transport_header + 4);
+ key->src = pkt->ip->ip_src;
+ key->dst = pkt->ip->ip_dst;
+ key->src_port = ntohs(tmp_ports & 0xffff);
+ key->dst_port = ntohs(tmp_ports >> 16);
+ break;
+ default:
+ key->src_port = 0;
+ key->dst_port = 0;
+ break;
+ }
+}
+
+Connection *connection_new(ConnectionKey *key)
+{
+ Connection *conn = g_slice_new(Connection);
+
+ conn->ip_proto = key->ip_proto;
+ conn->processing = false;
+ g_queue_init(&conn->primary_list);
+ g_queue_init(&conn->secondary_list);
+
+ return conn;
+}
+
+void connection_destroy(void *opaque)
+{
+ Connection *conn = opaque;
+
+ g_queue_foreach(&conn->primary_list, packet_destroy, NULL);
+ g_queue_free(&conn->primary_list);
+ g_queue_foreach(&conn->secondary_list, packet_destroy, NULL);
+ g_queue_free(&conn->secondary_list);
+ g_slice_free(Connection, conn);
+}
+
Packet *packet_new(const void *data, int size)
{
Packet *pkt = g_slice_new(Packet);
@@ -84,3 +163,33 @@ void connection_hashtable_reset(GHashTable *connection_track_table)
{
g_hash_table_remove_all(connection_track_table);
}
+
+/* if not found, create a new connection and add to hash table */
+Connection *connection_get(GHashTable *connection_track_table,
+ ConnectionKey *key,
+ GQueue *conn_list)
+{
+ Connection *conn = g_hash_table_lookup(connection_track_table, key);
+
+ if (conn == NULL) {
+ ConnectionKey *new_key = g_memdup(key, sizeof(*key));
+
+ conn = connection_new(key);
+
+ if (g_hash_table_size(connection_track_table) > HASHTABLE_MAX_SIZE) {
+ trace_colo_proxy_main("colo proxy connection hashtable full,"
+ " clear it");
+ connection_hashtable_reset(connection_track_table);
+ /*
+ * clear the conn_list
+ */
+ while (!g_queue_is_empty(conn_list)) {
+ connection_destroy(g_queue_pop_head(conn_list));
+ }
+ }
+
+ g_hash_table_insert(connection_track_table, new_key, conn);
+ }
+
+ return conn;
+}
diff --git a/net/colo.h b/net/colo.h
index 05dc0b6..c511bcd 100644
--- a/net/colo.h
+++ b/net/colo.h
@@ -20,6 +20,18 @@
#define HASHTABLE_MAX_SIZE 16384
+#ifndef IPPROTO_DCCP
+#define IPPROTO_DCCP 33
+#endif
+
+#ifndef IPPROTO_SCTP
+#define IPPROTO_SCTP 132
+#endif
+
+#ifndef IPPROTO_UDPLITE
+#define IPPROTO_UDPLITE 136
+#endif
+
typedef struct Packet {
void *data;
union {
@@ -30,7 +42,34 @@ typedef struct Packet {
int size;
} Packet;
+typedef struct ConnectionKey {
+ /* (src, dst) must be grouped, in the same way than in IP header */
+ struct in_addr src;
+ struct in_addr dst;
+ uint16_t src_port;
+ uint16_t dst_port;
+ uint8_t ip_proto;
+} QEMU_PACKED ConnectionKey;
+
+typedef struct Connection {
+ /* connection primary send queue: element type: Packet */
+ GQueue primary_list;
+ /* connection secondary send queue: element type: Packet */
+ GQueue secondary_list;
+ /* flag to enqueue unprocessed_connections */
+ bool processing;
+ uint8_t ip_proto;
+} Connection;
+
+uint32_t connection_key_hash(const void *opaque);
+int connection_key_equal(const void *opaque1, const void *opaque2);
int parse_packet_early(Packet *pkt);
+void fill_connection_key(Packet *pkt, ConnectionKey *key);
+Connection *connection_new(ConnectionKey *key);
+void connection_destroy(void *opaque);
+Connection *connection_get(GHashTable *connection_track_table,
+ ConnectionKey *key,
+ GQueue *conn_list);
void connection_hashtable_reset(GHashTable *connection_track_table);
Packet *packet_new(const void *data, int size);
void packet_destroy(void *opaque, void *user_data);
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 08/27] colo-compare: introduce packet comparison thread
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (6 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 07/27] colo-compare: track connection and enqueue packet Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 09/27] colo-compare: add TCP, UDP, ICMP packet comparison Jason Wang
` (19 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell
Cc: qemu-devel, Zhang Chen, Li Zhijian, Wen Congyang, Jason Wang
From: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
If primary packet is same with secondary packet,
we will send primary packet and drop secondary
packet, otherwise notify COLO frame to do checkpoint.
If primary packet comes but secondary packet does not,
after REGULAR_PACKET_CHECK_MS milliseconds we set
the primary packet as old_packet,then do a checkpoint.
Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
net/colo-compare.c | 233 +++++++++++++++++++++++++++++++++++++++++++++++++++++
net/colo.c | 1 +
net/colo.h | 3 +
trace-events | 2 +
4 files changed, 239 insertions(+)
diff --git a/net/colo-compare.c b/net/colo-compare.c
index 231654c..645126e 100644
--- a/net/colo-compare.c
+++ b/net/colo-compare.c
@@ -33,8 +33,12 @@
#define COLO_COMPARE(obj) \
OBJECT_CHECK(CompareState, (obj), TYPE_COLO_COMPARE)
+#define COMPARE_READ_LEN_MAX NET_BUFSIZE
#define MAX_QUEUE_SIZE 1024
+/* TODO: Should be configurable */
+#define REGULAR_PACKET_CHECK_MS 3000
+
/*
+ CompareState ++
| |
@@ -76,6 +80,11 @@ typedef struct CompareState {
GQueue conn_list;
/* hashtable to save connection */
GHashTable *connection_track_table;
+ /* compare thread, a thread for each NIC */
+ QemuThread thread;
+ /* Timer used on the primary to find packets that are never matched */
+ QEMUTimer *timer;
+ QemuMutex timer_check_lock;
} CompareState;
typedef struct CompareClass {
@@ -148,6 +157,118 @@ static int packet_enqueue(CompareState *s, int mode)
return 0;
}
+/*
+ * The IP packets sent by primary and secondary
+ * will be compared in here
+ * TODO support ip fragment, Out-Of-Order
+ * return: 0 means packet same
+ * > 0 || < 0 means packet different
+ */
+static int colo_packet_compare(Packet *ppkt, Packet *spkt)
+{
+ trace_colo_compare_ip_info(ppkt->size, inet_ntoa(ppkt->ip->ip_src),
+ inet_ntoa(ppkt->ip->ip_dst), spkt->size,
+ inet_ntoa(spkt->ip->ip_src),
+ inet_ntoa(spkt->ip->ip_dst));
+
+ if (ppkt->size == spkt->size) {
+ return memcmp(ppkt->data, spkt->data, spkt->size);
+ } else {
+ return -1;
+ }
+}
+
+static int colo_packet_compare_all(Packet *spkt, Packet *ppkt)
+{
+ trace_colo_compare_main("compare all");
+ return colo_packet_compare(ppkt, spkt);
+}
+
+static int colo_old_packet_check_one(Packet *pkt, int64_t *check_time)
+{
+ int64_t now = qemu_clock_get_ms(QEMU_CLOCK_HOST);
+
+ if ((now - pkt->creation_ms) > (*check_time)) {
+ trace_colo_old_packet_check_found(pkt->creation_ms);
+ return 0;
+ } else {
+ return 1;
+ }
+}
+
+static void colo_old_packet_check_one_conn(void *opaque,
+ void *user_data)
+{
+ Connection *conn = opaque;
+ GList *result = NULL;
+ int64_t check_time = REGULAR_PACKET_CHECK_MS;
+
+ result = g_queue_find_custom(&conn->primary_list,
+ &check_time,
+ (GCompareFunc)colo_old_packet_check_one);
+
+ if (result) {
+ /* do checkpoint will flush old packet */
+ /* TODO: colo_notify_checkpoint();*/
+ }
+}
+
+/*
+ * Look for old packets that the secondary hasn't matched,
+ * if we have some then we have to checkpoint to wake
+ * the secondary up.
+ */
+static void colo_old_packet_check(void *opaque)
+{
+ CompareState *s = opaque;
+
+ g_queue_foreach(&s->conn_list, colo_old_packet_check_one_conn, NULL);
+}
+
+/*
+ * Called from the compare thread on the primary
+ * for compare connection
+ */
+static void colo_compare_connection(void *opaque, void *user_data)
+{
+ CompareState *s = user_data;
+ Connection *conn = opaque;
+ Packet *pkt = NULL;
+ GList *result = NULL;
+ int ret;
+
+ while (!g_queue_is_empty(&conn->primary_list) &&
+ !g_queue_is_empty(&conn->secondary_list)) {
+ qemu_mutex_lock(&s->timer_check_lock);
+ pkt = g_queue_pop_tail(&conn->primary_list);
+ qemu_mutex_unlock(&s->timer_check_lock);
+ result = g_queue_find_custom(&conn->secondary_list,
+ pkt, (GCompareFunc)colo_packet_compare_all);
+
+ if (result) {
+ ret = compare_chr_send(s->chr_out, pkt->data, pkt->size);
+ if (ret < 0) {
+ error_report("colo_send_primary_packet failed");
+ }
+ trace_colo_compare_main("packet same and release packet");
+ g_queue_remove(&conn->secondary_list, result->data);
+ packet_destroy(pkt, NULL);
+ } else {
+ /*
+ * If one packet arrive late, the secondary_list or
+ * primary_list will be empty, so we can't compare it
+ * until next comparison.
+ */
+ trace_colo_compare_main("packet different");
+ qemu_mutex_lock(&s->timer_check_lock);
+ g_queue_push_tail(&conn->primary_list, pkt);
+ qemu_mutex_unlock(&s->timer_check_lock);
+ /* TODO: colo_notify_checkpoint();*/
+ break;
+ }
+ }
+}
+
static int compare_chr_send(CharDriverState *out,
const uint8_t *buf,
uint32_t size)
@@ -175,6 +296,65 @@ err:
return ret < 0 ? ret : -EIO;
}
+static int compare_chr_can_read(void *opaque)
+{
+ return COMPARE_READ_LEN_MAX;
+}
+
+/*
+ * Called from the main thread on the primary for packets
+ * arriving over the socket from the primary.
+ */
+static void compare_pri_chr_in(void *opaque, const uint8_t *buf, int size)
+{
+ CompareState *s = COLO_COMPARE(opaque);
+ int ret;
+
+ ret = net_fill_rstate(&s->pri_rs, buf, size);
+ if (ret == -1) {
+ qemu_chr_add_handlers(s->chr_pri_in, NULL, NULL, NULL, NULL);
+ error_report("colo-compare primary_in error");
+ }
+}
+
+/*
+ * Called from the main thread on the primary for packets
+ * arriving over the socket from the secondary.
+ */
+static void compare_sec_chr_in(void *opaque, const uint8_t *buf, int size)
+{
+ CompareState *s = COLO_COMPARE(opaque);
+ int ret;
+
+ ret = net_fill_rstate(&s->sec_rs, buf, size);
+ if (ret == -1) {
+ qemu_chr_add_handlers(s->chr_sec_in, NULL, NULL, NULL, NULL);
+ error_report("colo-compare secondary_in error");
+ }
+}
+
+static void *colo_compare_thread(void *opaque)
+{
+ GMainContext *worker_context;
+ GMainLoop *compare_loop;
+ CompareState *s = opaque;
+
+ worker_context = g_main_context_new();
+
+ qemu_chr_add_handlers_full(s->chr_pri_in, compare_chr_can_read,
+ compare_pri_chr_in, NULL, s, worker_context);
+ qemu_chr_add_handlers_full(s->chr_sec_in, compare_chr_can_read,
+ compare_sec_chr_in, NULL, s, worker_context);
+
+ compare_loop = g_main_loop_new(worker_context, FALSE);
+
+ g_main_loop_run(compare_loop);
+
+ g_main_loop_unref(compare_loop);
+ g_main_context_unref(worker_context);
+ return NULL;
+}
+
static char *compare_get_pri_indev(Object *obj, Error **errp)
{
CompareState *s = COLO_COMPARE(obj);
@@ -227,6 +407,9 @@ static void compare_pri_rs_finalize(SocketReadState *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);
+ } else {
+ /* compare connection */
+ g_queue_foreach(&s->conn_list, colo_compare_connection, s);
}
}
@@ -236,6 +419,9 @@ static void compare_sec_rs_finalize(SocketReadState *sec_rs)
if (packet_enqueue(s, SECONDARY_IN)) {
trace_colo_compare_main("secondary: unsupported packet in");
+ } else {
+ /* compare connection */
+ g_queue_foreach(&s->conn_list, colo_compare_connection, s);
}
}
@@ -294,12 +480,34 @@ static int find_and_check_chardev(CharDriverState **chr,
}
/*
+ * Check old packet regularly so it can watch for any packets
+ * that the secondary hasn't produced equivalents of.
+ */
+static void check_old_packet_regular(void *opaque)
+{
+ CompareState *s = opaque;
+
+ timer_mod(s->timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) +
+ REGULAR_PACKET_CHECK_MS);
+ /* if have old packet we will notify checkpoint */
+ /*
+ * TODO: Make timer handler run in compare thread
+ * like qemu_chr_add_handlers_full.
+ */
+ qemu_mutex_lock(&s->timer_check_lock);
+ colo_old_packet_check(s);
+ qemu_mutex_unlock(&s->timer_check_lock);
+}
+
+/*
* Called from the main thread on the primary
* to setup colo-compare.
*/
static void colo_compare_complete(UserCreatable *uc, Error **errp)
{
CompareState *s = COLO_COMPARE(uc);
+ char thread_name[64];
+ static int compare_id;
if (!s->pri_indev || !s->sec_indev || !s->outdev) {
error_setg(errp, "colo compare needs 'primary_in' ,"
@@ -335,12 +543,25 @@ static void colo_compare_complete(UserCreatable *uc, Error **errp)
net_socket_rs_init(&s->sec_rs, compare_sec_rs_finalize);
g_queue_init(&s->conn_list);
+ qemu_mutex_init(&s->timer_check_lock);
s->connection_track_table = g_hash_table_new_full(connection_key_hash,
connection_key_equal,
g_free,
connection_destroy);
+ sprintf(thread_name, "colo-compare %d", compare_id);
+ qemu_thread_create(&s->thread, thread_name,
+ colo_compare_thread, s,
+ QEMU_THREAD_JOINABLE);
+ compare_id++;
+
+ /* A regular timer to kick any packets that the secondary doesn't match */
+ s->timer = timer_new_ms(QEMU_CLOCK_VIRTUAL, /* Only when guest runs */
+ check_old_packet_regular, s);
+ timer_mod(s->timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) +
+ REGULAR_PACKET_CHECK_MS);
+
return;
}
@@ -382,6 +603,18 @@ static void colo_compare_finalize(Object *obj)
g_queue_free(&s->conn_list);
+ if (qemu_thread_is_self(&s->thread)) {
+ /* compare connection */
+ g_queue_foreach(&s->conn_list, colo_compare_connection, s);
+ qemu_thread_join(&s->thread);
+ }
+
+ if (s->timer) {
+ timer_del(s->timer);
+ }
+
+ qemu_mutex_destroy(&s->timer_check_lock);
+
g_free(s->pri_indev);
g_free(s->sec_indev);
g_free(s->outdev);
diff --git a/net/colo.c b/net/colo.c
index 13a8090..e517521 100644
--- a/net/colo.c
+++ b/net/colo.c
@@ -144,6 +144,7 @@ Packet *packet_new(const void *data, int size)
pkt->data = g_memdup(data, size);
pkt->size = size;
+ pkt->creation_ms = qemu_clock_get_ms(QEMU_CLOCK_HOST);
return pkt;
}
diff --git a/net/colo.h b/net/colo.h
index c511bcd..9a7d5e0 100644
--- a/net/colo.h
+++ b/net/colo.h
@@ -17,6 +17,7 @@
#include "slirp/slirp.h"
#include "qemu/jhash.h"
+#include "qemu/timer.h"
#define HASHTABLE_MAX_SIZE 16384
@@ -40,6 +41,8 @@ typedef struct Packet {
};
uint8_t *transport_header;
int size;
+ /* Time of packet creation, in wall clock ms */
+ int64_t creation_ms;
} Packet;
typedef struct ConnectionKey {
diff --git a/trace-events b/trace-events
index 9b4186f..81de82c 100644
--- a/trace-events
+++ b/trace-events
@@ -144,6 +144,8 @@ colo_proxy_main(const char *chr) ": %s"
# net/colo-compare.c
colo_compare_main(const char *chr) ": %s"
+colo_compare_ip_info(int psize, const char *sta, const char *stb, int ssize, const char *stc, const char *std) "ppkt size = %d, ip_src = %s, ip_dst = %s, spkt size = %d, ip_src = %s, ip_dst = %s"
+colo_old_packet_check_found(int64_t old_time) "%" PRId64
### Guest events, keep at bottom
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 09/27] colo-compare: add TCP, UDP, ICMP packet comparison
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (7 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 08/27] colo-compare: introduce packet comparison thread Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 10/27] filter-rewriter: introduce filter-rewriter initialization Jason Wang
` (18 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell
Cc: qemu-devel, Zhang Chen, Li Zhijian, Wen Congyang, Jason Wang
From: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
We add TCP,UDP,ICMP packet comparison to replace
IP packet comparison. This can increase the
accuracy of the package comparison.
Less checkpoint more efficiency.
Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
net/colo-compare.c | 147 +++++++++++++++++++++++++++++++++++++++++++++++++++--
trace-events | 3 ++
2 files changed, 146 insertions(+), 4 deletions(-)
diff --git a/net/colo-compare.c b/net/colo-compare.c
index 645126e..3328515 100644
--- a/net/colo-compare.c
+++ b/net/colo-compare.c
@@ -19,6 +19,7 @@
#include "qapi/qmp/qerror.h"
#include "qapi/error.h"
#include "net/net.h"
+#include "net/eth.h"
#include "qom/object_interfaces.h"
#include "qemu/iov.h"
#include "qom/object.h"
@@ -178,9 +179,131 @@ static int colo_packet_compare(Packet *ppkt, Packet *spkt)
}
}
-static int colo_packet_compare_all(Packet *spkt, Packet *ppkt)
+/*
+ * Called from the compare thread on the primary
+ * for compare tcp packet
+ * compare_tcp copied from Dr. David Alan Gilbert's branch
+ */
+static int colo_packet_compare_tcp(Packet *spkt, Packet *ppkt)
+{
+ struct tcphdr *ptcp, *stcp;
+ int res;
+ char *sdebug, *ddebug;
+
+ trace_colo_compare_main("compare tcp");
+ if (ppkt->size != spkt->size) {
+ if (trace_event_get_state(TRACE_COLO_COMPARE_MISCOMPARE)) {
+ trace_colo_compare_main("pkt size not same");
+ }
+ return -1;
+ }
+
+ ptcp = (struct tcphdr *)ppkt->transport_header;
+ stcp = (struct tcphdr *)spkt->transport_header;
+
+ /*
+ * The 'identification' field in the IP header is *very* random
+ * it almost never matches. Fudge this by ignoring differences in
+ * unfragmented packets; they'll normally sort themselves out if different
+ * anyway, and it should recover at the TCP level.
+ * An alternative would be to get both the primary and secondary to rewrite
+ * somehow; but that would need some sync traffic to sync the state
+ */
+ if (ntohs(ppkt->ip->ip_off) & IP_DF) {
+ spkt->ip->ip_id = ppkt->ip->ip_id;
+ /* and the sum will be different if the IDs were different */
+ spkt->ip->ip_sum = ppkt->ip->ip_sum;
+ }
+
+ res = memcmp(ppkt->data + ETH_HLEN, spkt->data + ETH_HLEN,
+ (spkt->size - ETH_HLEN));
+
+ if (res != 0 && trace_event_get_state(TRACE_COLO_COMPARE_MISCOMPARE)) {
+ sdebug = strdup(inet_ntoa(ppkt->ip->ip_src));
+ ddebug = strdup(inet_ntoa(ppkt->ip->ip_dst));
+ fprintf(stderr, "%s: src/dst: %s/%s p: seq/ack=%u/%u"
+ " s: seq/ack=%u/%u res=%d flags=%x/%x\n",
+ __func__, sdebug, ddebug,
+ (unsigned int)ntohl(ptcp->th_seq),
+ (unsigned int)ntohl(ptcp->th_ack),
+ (unsigned int)ntohl(stcp->th_seq),
+ (unsigned int)ntohl(stcp->th_ack),
+ res, ptcp->th_flags, stcp->th_flags);
+
+ fprintf(stderr, "Primary len = %d\n", ppkt->size);
+ qemu_hexdump((char *)ppkt->data, stderr, "colo-compare", ppkt->size);
+ fprintf(stderr, "Secondary len = %d\n", spkt->size);
+ qemu_hexdump((char *)spkt->data, stderr, "colo-compare", spkt->size);
+
+ g_free(sdebug);
+ g_free(ddebug);
+ }
+
+ return res;
+}
+
+/*
+ * Called from the compare thread on the primary
+ * for compare udp packet
+ */
+static int colo_packet_compare_udp(Packet *spkt, Packet *ppkt)
+{
+ int ret;
+
+ trace_colo_compare_main("compare udp");
+ ret = colo_packet_compare(ppkt, spkt);
+
+ if (ret) {
+ trace_colo_compare_udp_miscompare("primary pkt size", ppkt->size);
+ qemu_hexdump((char *)ppkt->data, stderr, "colo-compare", ppkt->size);
+ trace_colo_compare_udp_miscompare("Secondary pkt size", spkt->size);
+ qemu_hexdump((char *)spkt->data, stderr, "colo-compare", spkt->size);
+ }
+
+ return ret;
+}
+
+/*
+ * Called from the compare thread on the primary
+ * for compare icmp packet
+ */
+static int colo_packet_compare_icmp(Packet *spkt, Packet *ppkt)
{
- trace_colo_compare_main("compare all");
+ int network_length;
+
+ trace_colo_compare_main("compare icmp");
+ network_length = ppkt->ip->ip_hl * 4;
+ if (ppkt->size != spkt->size ||
+ ppkt->size < network_length + ETH_HLEN) {
+ return -1;
+ }
+
+ if (colo_packet_compare(ppkt, spkt)) {
+ trace_colo_compare_icmp_miscompare("primary pkt size",
+ ppkt->size);
+ qemu_hexdump((char *)ppkt->data, stderr, "colo-compare",
+ ppkt->size);
+ trace_colo_compare_icmp_miscompare("Secondary pkt size",
+ spkt->size);
+ qemu_hexdump((char *)spkt->data, stderr, "colo-compare",
+ spkt->size);
+ return -1;
+ } else {
+ return 0;
+ }
+}
+
+/*
+ * Called from the compare thread on the primary
+ * for compare other packet
+ */
+static int colo_packet_compare_other(Packet *spkt, Packet *ppkt)
+{
+ trace_colo_compare_main("compare other");
+ trace_colo_compare_ip_info(ppkt->size, inet_ntoa(ppkt->ip->ip_src),
+ inet_ntoa(ppkt->ip->ip_dst), spkt->size,
+ inet_ntoa(spkt->ip->ip_src),
+ inet_ntoa(spkt->ip->ip_dst));
return colo_packet_compare(ppkt, spkt);
}
@@ -242,8 +365,24 @@ static void colo_compare_connection(void *opaque, void *user_data)
qemu_mutex_lock(&s->timer_check_lock);
pkt = g_queue_pop_tail(&conn->primary_list);
qemu_mutex_unlock(&s->timer_check_lock);
- result = g_queue_find_custom(&conn->secondary_list,
- pkt, (GCompareFunc)colo_packet_compare_all);
+ switch (conn->ip_proto) {
+ case IPPROTO_TCP:
+ result = g_queue_find_custom(&conn->secondary_list,
+ pkt, (GCompareFunc)colo_packet_compare_tcp);
+ break;
+ case IPPROTO_UDP:
+ result = g_queue_find_custom(&conn->secondary_list,
+ pkt, (GCompareFunc)colo_packet_compare_udp);
+ break;
+ case IPPROTO_ICMP:
+ result = g_queue_find_custom(&conn->secondary_list,
+ pkt, (GCompareFunc)colo_packet_compare_icmp);
+ break;
+ default:
+ result = g_queue_find_custom(&conn->secondary_list,
+ pkt, (GCompareFunc)colo_packet_compare_other);
+ break;
+ }
if (result) {
ret = compare_chr_send(s->chr_out, pkt->data, pkt->size);
diff --git a/trace-events b/trace-events
index 81de82c..b395368 100644
--- a/trace-events
+++ b/trace-events
@@ -144,8 +144,11 @@ colo_proxy_main(const char *chr) ": %s"
# net/colo-compare.c
colo_compare_main(const char *chr) ": %s"
+colo_compare_udp_miscompare(const char *sta, int size) ": %s = %d"
+colo_compare_icmp_miscompare(const char *sta, int size) ": %s = %d"
colo_compare_ip_info(int psize, const char *sta, const char *stb, int ssize, const char *stc, const char *std) "ppkt size = %d, ip_src = %s, ip_dst = %s, spkt size = %d, ip_src = %s, ip_dst = %s"
colo_old_packet_check_found(int64_t old_time) "%" PRId64
+colo_compare_miscompare(void) ""
### Guest events, keep at bottom
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 10/27] filter-rewriter: introduce filter-rewriter initialization
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (8 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 09/27] colo-compare: add TCP, UDP, ICMP packet comparison Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 11/27] filter-rewriter: track connection and parse packet Jason Wang
` (17 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell
Cc: qemu-devel, Zhang Chen, Li Zhijian, Wen Congyang, Jason Wang
From: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Filter-rewriter is a part of COLO project.
It will rewrite some of secondary packet to make
secondary guest's tcp connection established successfully.
In this module we will rewrite tcp packet's ack to the secondary
from primary,and rewrite tcp packet's seq to the primary from
secondary.
usage:
colo secondary:
-object filter-redirector,id=f1,netdev=hn0,queue=tx,indev=red0
-object filter-redirector,id=f2,netdev=hn0,queue=rx,outdev=red1
-object filter-rewriter,id=rew0,netdev=hn0,queue=all
Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
net/Makefile.objs | 1 +
net/filter-rewriter.c | 105 ++++++++++++++++++++++++++++++++++++++++++++++++++
qemu-options.hx | 13 +++++++
vl.c | 3 +-
4 files changed, 121 insertions(+), 1 deletion(-)
create mode 100644 net/filter-rewriter.c
diff --git a/net/Makefile.objs b/net/Makefile.objs
index beb504b..2a80df5 100644
--- a/net/Makefile.objs
+++ b/net/Makefile.objs
@@ -18,3 +18,4 @@ common-obj-y += filter-buffer.o
common-obj-y += filter-mirror.o
common-obj-y += colo-compare.o
common-obj-y += colo.o
+common-obj-y += filter-rewriter.o
diff --git a/net/filter-rewriter.c b/net/filter-rewriter.c
new file mode 100644
index 0000000..de29f07
--- /dev/null
+++ b/net/filter-rewriter.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
+ * Copyright (c) 2016 FUJITSU LIMITED
+ * Copyright (c) 2016 Intel Corporation
+ *
+ * Author: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
+ *
+ * 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 "net/colo.h"
+#include "net/filter.h"
+#include "net/net.h"
+#include "qemu-common.h"
+#include "qapi/error.h"
+#include "qapi/qmp/qerror.h"
+#include "qapi-visit.h"
+#include "qom/object.h"
+#include "qemu/main-loop.h"
+#include "qemu/iov.h"
+#include "net/checksum.h"
+
+#define FILTER_COLO_REWRITER(obj) \
+ OBJECT_CHECK(RewriterState, (obj), TYPE_FILTER_REWRITER)
+
+#define TYPE_FILTER_REWRITER "filter-rewriter"
+
+typedef struct RewriterState {
+ NetFilterState parent_obj;
+ NetQueue *incoming_queue;
+ /* hashtable to save connection */
+ GHashTable *connection_track_table;
+} RewriterState;
+
+static void filter_rewriter_flush(NetFilterState *nf)
+{
+ RewriterState *s = FILTER_COLO_REWRITER(nf);
+
+ if (!qemu_net_queue_flush(s->incoming_queue)) {
+ /* Unable to empty the queue, purge remaining packets */
+ qemu_net_queue_purge(s->incoming_queue, nf->netdev);
+ }
+}
+
+static ssize_t colo_rewriter_receive_iov(NetFilterState *nf,
+ NetClientState *sender,
+ unsigned flags,
+ const struct iovec *iov,
+ int iovcnt,
+ NetPacketSent *sent_cb)
+{
+ /*
+ * if we get tcp packet
+ * we will rewrite it to make secondary guest's
+ * connection established successfully
+ */
+ return 0;
+}
+
+static void colo_rewriter_cleanup(NetFilterState *nf)
+{
+ RewriterState *s = FILTER_COLO_REWRITER(nf);
+
+ /* flush packets */
+ if (s->incoming_queue) {
+ filter_rewriter_flush(nf);
+ g_free(s->incoming_queue);
+ }
+}
+
+static void colo_rewriter_setup(NetFilterState *nf, Error **errp)
+{
+ RewriterState *s = FILTER_COLO_REWRITER(nf);
+
+ s->connection_track_table = g_hash_table_new_full(connection_key_hash,
+ connection_key_equal,
+ g_free,
+ connection_destroy);
+ s->incoming_queue = qemu_new_net_queue(qemu_netfilter_pass_to_next, nf);
+}
+
+static void colo_rewriter_class_init(ObjectClass *oc, void *data)
+{
+ NetFilterClass *nfc = NETFILTER_CLASS(oc);
+
+ nfc->setup = colo_rewriter_setup;
+ nfc->cleanup = colo_rewriter_cleanup;
+ nfc->receive_iov = colo_rewriter_receive_iov;
+}
+
+static const TypeInfo colo_rewriter_info = {
+ .name = TYPE_FILTER_REWRITER,
+ .parent = TYPE_NETFILTER,
+ .class_init = colo_rewriter_class_init,
+ .instance_size = sizeof(RewriterState),
+};
+
+static void register_types(void)
+{
+ type_register_static(&colo_rewriter_info);
+}
+
+type_init(register_types);
diff --git a/qemu-options.hx b/qemu-options.hx
index d0ed69a..987d055 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -3887,6 +3887,19 @@ Create a filter-redirector we need to differ outdev id from indev id, id can not
be the same. we can just use indev or outdev, but at least one of indev or outdev
need to be specified.
+@item -object filter-rewriter,id=@var{id},netdev=@var{netdevid},rewriter-mode=@var{mode}[,queue=@var{all|rx|tx}]
+
+Filter-rewriter is a part of COLO project.It will rewrite tcp packet to
+secondary from primary to keep secondary tcp connection,and rewrite
+tcp packet to primary from secondary make tcp packet can be handled by
+client.
+
+usage:
+colo secondary:
+-object filter-redirector,id=f1,netdev=hn0,queue=tx,indev=red0
+-object filter-redirector,id=f2,netdev=hn0,queue=rx,outdev=red1
+-object filter-rewriter,id=rew0,netdev=hn0,queue=all
+
@item -object filter-dump,id=@var{id},netdev=@var{dev},file=@var{filename}][,maxlen=@var{len}]
Dump the network traffic on netdev @var{dev} to the file specified by
diff --git a/vl.c b/vl.c
index 7dadb9e..eafda8d 100644
--- a/vl.c
+++ b/vl.c
@@ -2846,7 +2846,8 @@ static bool object_create_initial(const char *type)
g_str_equal(type, "filter-dump") ||
g_str_equal(type, "filter-mirror") ||
g_str_equal(type, "filter-redirector") ||
- g_str_equal(type, "colo-compare")) {
+ g_str_equal(type, "colo-compare") ||
+ g_str_equal(type, "filter-rewriter")) {
return false;
}
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 11/27] filter-rewriter: track connection and parse packet
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (9 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 10/27] filter-rewriter: introduce filter-rewriter initialization Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 12/27] filter-rewriter: rewrite tcp packet to keep secondary connection Jason Wang
` (16 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell
Cc: qemu-devel, Zhang Chen, Li Zhijian, Wen Congyang, Jason Wang
From: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
We use net/colo.h to track connection and parse packet
Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
net/colo.c | 14 ++++++++++++++
net/colo.h | 1 +
net/filter-rewriter.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 65 insertions(+)
diff --git a/net/colo.c b/net/colo.c
index e517521..dc4e4a4 100644
--- a/net/colo.c
+++ b/net/colo.c
@@ -115,6 +115,20 @@ void fill_connection_key(Packet *pkt, ConnectionKey *key)
}
}
+void reverse_connection_key(ConnectionKey *key)
+{
+ struct in_addr tmp_ip;
+ uint16_t tmp_port;
+
+ tmp_ip = key->src;
+ key->src = key->dst;
+ key->dst = tmp_ip;
+
+ tmp_port = key->src_port;
+ key->src_port = key->dst_port;
+ key->dst_port = tmp_port;
+}
+
Connection *connection_new(ConnectionKey *key)
{
Connection *conn = g_slice_new(Connection);
diff --git a/net/colo.h b/net/colo.h
index 9a7d5e0..6720a3a 100644
--- a/net/colo.h
+++ b/net/colo.h
@@ -68,6 +68,7 @@ uint32_t connection_key_hash(const void *opaque);
int connection_key_equal(const void *opaque1, const void *opaque2);
int parse_packet_early(Packet *pkt);
void fill_connection_key(Packet *pkt, ConnectionKey *key);
+void reverse_connection_key(ConnectionKey *key);
Connection *connection_new(ConnectionKey *key);
void connection_destroy(void *opaque);
Connection *connection_get(GHashTable *connection_track_table,
diff --git a/net/filter-rewriter.c b/net/filter-rewriter.c
index de29f07..1d49d04 100644
--- a/net/filter-rewriter.c
+++ b/net/filter-rewriter.c
@@ -44,6 +44,20 @@ static void filter_rewriter_flush(NetFilterState *nf)
}
}
+/*
+ * Return 1 on success, if return 0 means the pkt
+ * is not TCP packet
+ */
+static int is_tcp_packet(Packet *pkt)
+{
+ if (!parse_packet_early(pkt) &&
+ pkt->ip->ip_p == IPPROTO_TCP) {
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
static ssize_t colo_rewriter_receive_iov(NetFilterState *nf,
NetClientState *sender,
unsigned flags,
@@ -51,11 +65,47 @@ static ssize_t colo_rewriter_receive_iov(NetFilterState *nf,
int iovcnt,
NetPacketSent *sent_cb)
{
+ RewriterState *s = FILTER_COLO_REWRITER(nf);
+ Connection *conn;
+ ConnectionKey key = { 0 };
+ Packet *pkt;
+ ssize_t size = iov_size(iov, iovcnt);
+ char *buf = g_malloc0(size);
+
+ iov_to_buf(iov, iovcnt, 0, buf, size);
+ pkt = packet_new(buf, size);
+
/*
* if we get tcp packet
* we will rewrite it to make secondary guest's
* connection established successfully
*/
+ if (pkt && is_tcp_packet(pkt)) {
+
+ fill_connection_key(pkt, &key);
+
+ if (sender == nf->netdev) {
+ /*
+ * We need make tcp TX and RX packet
+ * into one connection.
+ */
+ reverse_connection_key(&key);
+ }
+ conn = connection_get(s->connection_track_table,
+ &key,
+ NULL);
+
+ if (sender == nf->netdev) {
+ /* NET_FILTER_DIRECTION_TX */
+ /* handle_primary_tcp_pkt */
+ } else {
+ /* NET_FILTER_DIRECTION_RX */
+ /* handle_secondary_tcp_pkt */
+ }
+ }
+
+ packet_destroy(pkt, NULL);
+ pkt = NULL;
return 0;
}
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 12/27] filter-rewriter: rewrite tcp packet to keep secondary connection
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (10 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 11/27] filter-rewriter: track connection and parse packet Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 13/27] MAINTAINERS: add maintainer for COLO-proxy Jason Wang
` (15 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell
Cc: qemu-devel, Zhang Chen, Li Zhijian, Wen Congyang, Jason Wang
From: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
We will rewrite tcp packet secondary received and sent.
When colo guest is a tcp server.
Firstly, client start a tcp handshake. the packet's seq=client_seq,
ack=0,flag=SYN. COLO primary guest get this pkt and mirror(filter-mirror)
to secondary guest, secondary get it use filter-redirector.
Then,primary guest response pkt
(seq=primary_seq,ack=client_seq+1,flag=ACK|SYN).
secondary guest response pkt
(seq=secondary_seq,ack=client_seq+1,flag=ACK|SYN).
In here,we use filter-rewriter save the secondary_seq to it's tcp connection.
Finally handshake,client send pkt
(seq=client_seq+1,ack=primary_seq+1,flag=ACK).
Here,filter-rewriter can get primary_seq, and rewrite ack from primary_seq+1
to secondary_seq+1, recalculate checksum. So the secondary tcp connection
kept good.
When we send/recv packet.
client send pkt(seq=client_seq+1+data_len,ack=primary_seq+1,flag=ACK|PSH).
filter-rewriter rewrite ack and send to secondary guest.
primary guest response pkt
(seq=primary_seq+1,ack=client_seq+1+data_len,flag=ACK)
secondary guest response pkt
(seq=secondary_seq+1,ack=client_seq+1+data_len,flag=ACK)
we rewrite secondary guest seq from secondary_seq+1 to primary_seq+1.
So tcp connection kept good.
In code We use offset( = secondary_seq - primary_seq )
to rewrite seq or ack.
handle_primary_tcp_pkt: tcp_pkt->th_ack += offset;
handle_secondary_tcp_pkt: tcp_pkt->th_seq -= offset;
Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
net/colo.c | 2 +
net/colo.h | 7 ++++
net/filter-rewriter.c | 112 +++++++++++++++++++++++++++++++++++++++++++++++++-
trace-events | 5 +++
4 files changed, 124 insertions(+), 2 deletions(-)
diff --git a/net/colo.c b/net/colo.c
index dc4e4a4..9f469e6 100644
--- a/net/colo.c
+++ b/net/colo.c
@@ -135,6 +135,8 @@ Connection *connection_new(ConnectionKey *key)
conn->ip_proto = key->ip_proto;
conn->processing = false;
+ conn->offset = 0;
+ conn->syn_flag = 0;
g_queue_init(&conn->primary_list);
g_queue_init(&conn->secondary_list);
diff --git a/net/colo.h b/net/colo.h
index 6720a3a..7c524f3 100644
--- a/net/colo.h
+++ b/net/colo.h
@@ -62,6 +62,13 @@ typedef struct Connection {
/* flag to enqueue unprocessed_connections */
bool processing;
uint8_t ip_proto;
+ /* offset = secondary_seq - primary_seq */
+ tcp_seq offset;
+ /*
+ * we use this flag update offset func
+ * run once in independent tcp connection
+ */
+ int syn_flag;
} Connection;
uint32_t connection_key_hash(const void *opaque);
diff --git a/net/filter-rewriter.c b/net/filter-rewriter.c
index 1d49d04..cd0dc54 100644
--- a/net/filter-rewriter.c
+++ b/net/filter-rewriter.c
@@ -10,6 +10,7 @@
*/
#include "qemu/osdep.h"
+#include "trace.h"
#include "net/colo.h"
#include "net/filter.h"
#include "net/net.h"
@@ -58,6 +59,93 @@ static int is_tcp_packet(Packet *pkt)
}
}
+/* handle tcp packet from primary guest */
+static int handle_primary_tcp_pkt(NetFilterState *nf,
+ Connection *conn,
+ Packet *pkt)
+{
+ struct tcphdr *tcp_pkt;
+
+ tcp_pkt = (struct tcphdr *)pkt->transport_header;
+ if (trace_event_get_state(TRACE_COLO_FILTER_REWRITER_DEBUG)) {
+ char *sdebug, *ddebug;
+ sdebug = strdup(inet_ntoa(pkt->ip->ip_src));
+ ddebug = strdup(inet_ntoa(pkt->ip->ip_dst));
+ trace_colo_filter_rewriter_pkt_info(__func__, sdebug, ddebug,
+ ntohl(tcp_pkt->th_seq), ntohl(tcp_pkt->th_ack),
+ tcp_pkt->th_flags);
+ trace_colo_filter_rewriter_conn_offset(conn->offset);
+ g_free(sdebug);
+ g_free(ddebug);
+ }
+
+ if (((tcp_pkt->th_flags & (TH_ACK | TH_SYN)) == TH_SYN)) {
+ /*
+ * we use this flag update offset func
+ * run once in independent tcp connection
+ */
+ conn->syn_flag = 1;
+ }
+
+ if (((tcp_pkt->th_flags & (TH_ACK | TH_SYN)) == TH_ACK)) {
+ if (conn->syn_flag) {
+ /*
+ * offset = secondary_seq - primary seq
+ * ack packet sent by guest from primary node,
+ * so we use th_ack - 1 get primary_seq
+ */
+ conn->offset -= (ntohl(tcp_pkt->th_ack) - 1);
+ conn->syn_flag = 0;
+ }
+ /* handle packets to the secondary from the primary */
+ tcp_pkt->th_ack = htonl(ntohl(tcp_pkt->th_ack) + conn->offset);
+
+ net_checksum_calculate((uint8_t *)pkt->data, pkt->size);
+ }
+
+ return 0;
+}
+
+/* handle tcp packet from secondary guest */
+static int handle_secondary_tcp_pkt(NetFilterState *nf,
+ Connection *conn,
+ Packet *pkt)
+{
+ struct tcphdr *tcp_pkt;
+
+ tcp_pkt = (struct tcphdr *)pkt->transport_header;
+
+ if (trace_event_get_state(TRACE_COLO_FILTER_REWRITER_DEBUG)) {
+ char *sdebug, *ddebug;
+ sdebug = strdup(inet_ntoa(pkt->ip->ip_src));
+ ddebug = strdup(inet_ntoa(pkt->ip->ip_dst));
+ trace_colo_filter_rewriter_pkt_info(__func__, sdebug, ddebug,
+ ntohl(tcp_pkt->th_seq), ntohl(tcp_pkt->th_ack),
+ tcp_pkt->th_flags);
+ trace_colo_filter_rewriter_conn_offset(conn->offset);
+ g_free(sdebug);
+ g_free(ddebug);
+ }
+
+ if (((tcp_pkt->th_flags & (TH_ACK | TH_SYN)) == (TH_ACK | TH_SYN))) {
+ /*
+ * save offset = secondary_seq and then
+ * in handle_primary_tcp_pkt make offset
+ * = secondary_seq - primary_seq
+ */
+ conn->offset = ntohl(tcp_pkt->th_seq);
+ }
+
+ if ((tcp_pkt->th_flags & (TH_ACK | TH_SYN)) == TH_ACK) {
+ /* handle packets to the primary from the secondary*/
+ tcp_pkt->th_seq = htonl(ntohl(tcp_pkt->th_seq) - conn->offset);
+
+ net_checksum_calculate((uint8_t *)pkt->data, pkt->size);
+ }
+
+ return 0;
+}
+
static ssize_t colo_rewriter_receive_iov(NetFilterState *nf,
NetClientState *sender,
unsigned flags,
@@ -97,10 +185,30 @@ static ssize_t colo_rewriter_receive_iov(NetFilterState *nf,
if (sender == nf->netdev) {
/* NET_FILTER_DIRECTION_TX */
- /* handle_primary_tcp_pkt */
+ if (!handle_primary_tcp_pkt(nf, conn, pkt)) {
+ qemu_net_queue_send(s->incoming_queue, sender, 0,
+ (const uint8_t *)pkt->data, pkt->size, NULL);
+ packet_destroy(pkt, NULL);
+ pkt = NULL;
+ /*
+ * We block the packet here,after rewrite pkt
+ * and will send it
+ */
+ return 1;
+ }
} else {
/* NET_FILTER_DIRECTION_RX */
- /* handle_secondary_tcp_pkt */
+ if (!handle_secondary_tcp_pkt(nf, conn, pkt)) {
+ qemu_net_queue_send(s->incoming_queue, sender, 0,
+ (const uint8_t *)pkt->data, pkt->size, NULL);
+ packet_destroy(pkt, NULL);
+ pkt = NULL;
+ /*
+ * We block the packet here,after rewrite pkt
+ * and will send it
+ */
+ return 1;
+ }
}
}
diff --git a/trace-events b/trace-events
index b395368..1cb9d37 100644
--- a/trace-events
+++ b/trace-events
@@ -150,6 +150,11 @@ colo_compare_ip_info(int psize, const char *sta, const char *stb, int ssize, con
colo_old_packet_check_found(int64_t old_time) "%" PRId64
colo_compare_miscompare(void) ""
+# net/filter-rewriter.c
+colo_filter_rewriter_debug(void) ""
+colo_filter_rewriter_pkt_info(const char *func, const char *src, const char *dst, uint32_t seq, uint32_t ack, uint32_t flag) "%s: src/dst: %s/%s p: seq/ack=%u/%u flags=%x\n"
+colo_filter_rewriter_conn_offset(uint32_t offset) ": offset=%u\n"
+
### Guest events, keep at bottom
# @vaddr: Access' virtual address.
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 13/27] MAINTAINERS: add maintainer for COLO-proxy
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (11 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 12/27] filter-rewriter: rewrite tcp packet to keep secondary connection Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 14/27] docs: Add documentation " Jason Wang
` (14 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell
Cc: qemu-devel, Zhang Chen, Li Zhijian, Wen Congyang, Jason Wang
From: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
add Zhang Chen and Li zhijian as co-maintainers of COLO-proxy.
Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
MAINTAINERS | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index a3a2ad7..f3c1f7f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1364,6 +1364,15 @@ F: util/uuid.c
F: include/qemu/uuid.h
F: tests/test-uuid.c
+COLO Proxy
+M: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
+M: Li Zhijian <lizhijian@cn.fujitsu.com>
+S: Supported
+F: docs/colo-proxy.txt
+F: net/colo*
+F: net/filter-rewriter.c
+F: net/filter-mirror.c
+
Usermode Emulation
------------------
Overall
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 14/27] docs: Add documentation for COLO-proxy
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (12 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 13/27] MAINTAINERS: add maintainer for COLO-proxy Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 15/27] e1000: fix buliding complaint Jason Wang
` (13 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell; +Cc: qemu-devel, Zhang Chen
From: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Introduce the design of COLO-proxy, and how to use it.
Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
---
docs/colo-proxy.txt | 188 ++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 188 insertions(+)
create mode 100644 docs/colo-proxy.txt
diff --git a/docs/colo-proxy.txt b/docs/colo-proxy.txt
new file mode 100644
index 0000000..76767cb
--- /dev/null
+++ b/docs/colo-proxy.txt
@@ -0,0 +1,188 @@
+COLO-proxy
+----------
+Copyright (c) 2016 Intel Corporation
+Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
+Copyright (c) 2016 Fujitsu, Corp.
+
+This work is licensed under the terms of the GNU GPL, version 2 or later.
+See the COPYING file in the top-level directory.
+
+This document gives an overview of COLO proxy's design.
+
+== Background ==
+COLO-proxy is a part of COLO project. It is used
+to compare the network package to help COLO decide
+whether to do checkpoint. With COLO-proxy's help,
+COLO greatly improves the performance.
+
+The filter-redirector, filter-mirror, colo-compare
+and filter-rewriter compose the COLO-proxy.
+
+== Architecture ==
+
+COLO-Proxy is based on qemu netfilter and it's a plugin for qemu netfilter
+(except colo-compare). It keep Secondary VM connect normally to
+client and compare packets sent by PVM with sent by SVM.
+If the packet difference, notify COLO-frame to do checkpoint and send
+all primary packet has queued. Otherwise just send the queued primary
+packet and drop the queued secondary packet.
+
+Below is a COLO proxy ascii figure:
+
+ Primary qemu Secondary qemu
++--------------------------------------------------------------+ +----------------------------------------------------------------+
+| +----------------------------------------------------------+ | | +-----------------------------------------------------------+ |
+| | | | | | | |
+| | guest | | | | guest | |
+| | | | | | | |
+| +-------^--------------------------+-----------------------+ | | +---------------------+--------+----------------------------+ |
+| | | | | ^ | |
+| | | | | | | |
+| | +------------------------------------------------------+ | | | |
+|netfilter| | | | | | netfilter | | |
+| +----------+ +----------------------------+ | | | +-----------------------------------------------------------+ |
+| | | | | | out | | | | | | filter excute order | |
+| | | | +-----------------------------+ | | | | | | +-------------------> | |
+| | | | | | | | | | | | | | TCP | |
+| | +-----+--+-+ +-----v----+ +-----v----+ |pri +----+----+sec| | | | +------------+ +---+----+---v+rewriter++ +------------+ | |
+| | | | | | | | |in | |in | | | | | | | | | | | | |
+| | | filter | | filter | | filter +------> colo <------+ +--------> filter +--> adjust | adjust +--> filter | | |
+| | | mirror | |redirector| |redirector| | | compare | | | | | | redirector | | ack | seq | | redirector | | |
+| | | | | | | | | | | | | | | | | | | | | | | |
+| | +----^-----+ +----+-----+ +----------+ | +---------+ | | | | +------------+ +--------+--------------+ +---+--------+ | |
+| | | tx | rx rx | | | | | tx all | rx | |
+| | | | | | | | +-----------------------------------------------------------+ |
+| | | +--------------+ | | | | | |
+| | | filter excute order | | | | | | |
+| | | +----------------> | | | +--------------------------------------------------------+ |
+| +-----------------------------------------+ | | |
+| | | | | |
++--------------------------------------------------------------+ +----------------------------------------------------------------+
+ |guest receive | guest send
+ | |
++--------+----------------------------v------------------------+
+| | NOTE: filter direction is rx/tx/all
+| tap | rx:receive packets sent to the netdev
+| | tx:receive packets sent by the netdev
++--------------------------------------------------------------+
+
+1.Guest receive packet route:
+
+Primary:
+
+Tap --> Mirror Client Filter
+Mirror client will send packet to guest,at the
+same time, copy and forward packet to secondary
+mirror server.
+
+Secondary:
+
+Mirror Server Filter --> TCP Rewriter
+If receive packet is TCP packet,we will adjust ack
+and update TCP checksum, then send to secondary
+guest. Otherwise directly send to guest.
+
+2.Guest send packet route:
+
+Primary:
+
+Guest --> Redirect Server Filter
+Redirect server filter receive primary guest packet
+but do nothing, just pass to next filter.
+
+Redirect Server Filter --> COLO-Compare
+COLO-compare receive primary guest packet then
+waiting scondary redirect packet to compare it.
+If packet same,send queued primary packet and clear
+queued secondary packet, Otherwise send primary packet
+and do checkpoint.
+
+COLO-Compare --> Another Redirector Filter
+The redirector get packet from colo-compare by use
+chardev socket.
+
+Redirector Filter --> Tap
+Send the packet.
+
+Secondary:
+
+Guest --> TCP Rewriter Filter
+If the packet is TCP packet,we will adjust seq
+and update TCP checksum. Then send it to
+redirect client filter. Otherwise directly send to
+redirect client filter.
+
+Redirect Client Filter --> Redirect Server Filter
+Forward packet to primary.
+
+== Components introduction ==
+
+Filter-mirror is a netfilter plugin.
+It gives qemu the ability to mirror
+packets to a chardev.
+
+Filter-redirector is a netfilter plugin.
+It gives qemu the ability to redirect net packet.
+Redirector can redirect filter's net packet to outdev,
+and redirect indev's packet to filter.
+
+ filter
+ +
+ redirector |
+ +--------------+
+ | | |
+ | | |
+ | | |
+ indev +---------+ +----------> outdev
+ | | |
+ | | |
+ | | |
+ +--------------+
+ |
+ v
+ filter
+
+COLO-compare, we do packet comparing job.
+Packets coming from the primary char indev will be sent to outdev.
+Packets coming from the secondary char dev will be dropped after comparing.
+COLO-comapre need two input chardev and one output chardev:
+primary_in=chardev1-id (source: primary send packet)
+secondary_in=chardev2-id (source: secondary send packet)
+outdev=chardev3-id
+
+Filter-rewriter will rewrite some of secondary packet to make
+secondary guest's tcp connection established successfully.
+In this module we will rewrite tcp packet's ack to the secondary
+from primary,and rewrite tcp packet's seq to the primary from
+secondary.
+
+== Usage ==
+
+Here, we use demo ip and port discribe more clearly.
+Primary(ip:3.3.3.3):
+-netdev tap,id=hn0,vhost=off,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown
+-device e1000,id=e0,netdev=hn0,mac=52:a4:00:12:78:66
+-chardev socket,id=mirror0,host=3.3.3.3,port=9003,server,nowait
+-chardev socket,id=compare1,host=3.3.3.3,port=9004,server,nowait
+-chardev socket,id=compare0,host=3.3.3.3,port=9001,server,nowait
+-chardev socket,id=compare0-0,host=3.3.3.3,port=9001
+-chardev socket,id=compare_out,host=3.3.3.3,port=9005,server,nowait
+-chardev socket,id=compare_out0,host=3.3.3.3,port=9005
+-object filter-mirror,id=m0,netdev=hn0,queue=tx,outdev=mirror0
+-object filter-redirector,netdev=hn0,id=redire0,queue=rx,indev=compare_out
+-object filter-redirector,netdev=hn0,id=redire1,queue=rx,outdev=compare0
+-object colo-compare,id=comp0,primary_in=compare0-0,secondary_in=compare1,outdev=compare_out0
+
+Secondary(ip:3.3.3.8):
+-netdev tap,id=hn0,vhost=off,script=/etc/qemu-ifup,down script=/etc/qemu-ifdown
+-device e1000,netdev=hn0,mac=52:a4:00:12:78:66
+-chardev socket,id=red0,host=3.3.3.3,port=9003
+-chardev socket,id=red1,host=3.3.3.3,port=9004
+-object filter-redirector,id=f1,netdev=hn0,queue=tx,indev=red0
+-object filter-redirector,id=f2,netdev=hn0,queue=rx,outdev=red1
+
+Note:
+ a.COLO-proxy must work with COLO-frame and Block-replication.
+ b.Primary COLO must be started firstly, because COLO-proxy needs
+ chardev socket server running before secondary started.
+ c.Filter-rewriter only rewrite tcp packet.
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 15/27] e1000: fix buliding complaint
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (13 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 14/27] docs: Add documentation " Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 16/27] tap: Allow specifying a bridge Jason Wang
` (12 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell; +Cc: qemu-devel, Gonglei, Jason Wang
From: Gonglei <arei.gonglei@huawei.com>
hw/net/e1000e_core.c:56: warning: e1000e_set_interrupt_cause declared inline after being called
hw/net/e1000e_core.c:56: warning: previous declaration of e1000e_set_interrupt_cause was here
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
hw/net/e1000e_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/net/e1000e_core.c b/hw/net/e1000e_core.c
index e0bd31c..03e3c46 100644
--- a/hw/net/e1000e_core.c
+++ b/hw/net/e1000e_core.c
@@ -2168,7 +2168,7 @@ e1000e_update_interrupt_state(E1000ECore *core)
}
}
-static inline void
+static void
e1000e_set_interrupt_cause(E1000ECore *core, uint32_t val)
{
trace_e1000e_irq_set_cause_entry(val, core->mac[ICR]);
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 16/27] tap: Allow specifying a bridge
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (14 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 15/27] e1000: fix buliding complaint Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 17/27] net: limit allocation in nc_sendv_compat Jason Wang
` (11 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell; +Cc: qemu-devel, Alexey Kardashevskiy, Jason Wang
From: Alexey Kardashevskiy <aik@ozlabs.ru>
The tap backend is already using qemu-bridge-helper to attach tap
interface to a bridge but (unlike the bridge backend) it always uses
the default bridge name - br0.
This adds a "br" property support to the tap backend.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Greg Kurz <groug@kaod.org>
Tested-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
net/tap.c | 4 +++-
qapi-schema.json | 3 +++
qemu-options.hx | 12 +++++++-----
3 files changed, 13 insertions(+), 6 deletions(-)
diff --git a/net/tap.c b/net/tap.c
index 6abb962..b6896a7 100644
--- a/net/tap.c
+++ b/net/tap.c
@@ -857,7 +857,9 @@ free_fail:
return -1;
}
- fd = net_bridge_run_helper(tap->helper, DEFAULT_BRIDGE_INTERFACE,
+ fd = net_bridge_run_helper(tap->helper,
+ tap->has_br ?
+ tap->br : DEFAULT_BRIDGE_INTERFACE,
errp);
if (fd == -1) {
return -1;
diff --git a/qapi-schema.json b/qapi-schema.json
index e507061..c3dcf11 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -2636,6 +2636,8 @@
#
# @downscript: #optional script to shut down the interface
#
+# @br: #optional bridge name (since 2.8)
+#
# @helper: #optional command to execute to configure bridge
#
# @sndbuf: #optional send buffer limit. Understands [TGMKkb] suffixes.
@@ -2665,6 +2667,7 @@
'*fds': 'str',
'*script': 'str',
'*downscript': 'str',
+ '*br': 'str',
'*helper': 'str',
'*sndbuf': 'size',
'*vnet_hdr': 'bool',
diff --git a/qemu-options.hx b/qemu-options.hx
index 987d055..01f01df 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -1598,10 +1598,11 @@ DEF("netdev", HAS_ARG, QEMU_OPTION_netdev,
" configure a host TAP network backend with ID 'str'\n"
#else
"-netdev tap,id=str[,fd=h][,fds=x:y:...:z][,ifname=name][,script=file][,downscript=dfile]\n"
- " [,helper=helper][,sndbuf=nbytes][,vnet_hdr=on|off][,vhost=on|off]\n"
+ " [,br=bridge][,helper=helper][,sndbuf=nbytes][,vnet_hdr=on|off][,vhost=on|off]\n"
" [,vhostfd=h][,vhostfds=x:y:...:z][,vhostforce=on|off][,queues=n]\n"
" [,poll-us=n]\n"
" configure a host TAP network backend with ID 'str'\n"
+ " connected to a bridge (default=" DEFAULT_BRIDGE_INTERFACE ")\n"
" use network scripts 'file' (default=" DEFAULT_NETWORK_SCRIPT ")\n"
" to configure it and 'dfile' (default=" DEFAULT_NETWORK_DOWN_SCRIPT ")\n"
" to deconfigure it\n"
@@ -1888,8 +1889,8 @@ processed and applied to -net user. Mixing them with the new configuration
syntax gives undefined results. Their use for new applications is discouraged
as they will be removed from future versions.
-@item -netdev tap,id=@var{id}[,fd=@var{h}][,ifname=@var{name}][,script=@var{file}][,downscript=@var{dfile}][,helper=@var{helper}]
-@itemx -net tap[,vlan=@var{n}][,name=@var{name}][,fd=@var{h}][,ifname=@var{name}][,script=@var{file}][,downscript=@var{dfile}][,helper=@var{helper}]
+@item -netdev tap,id=@var{id}[,fd=@var{h}][,ifname=@var{name}][,script=@var{file}][,downscript=@var{dfile}][,br=@var{bridge}][,helper=@var{helper}]
+@itemx -net tap[,vlan=@var{n}][,name=@var{name}][,fd=@var{h}][,ifname=@var{name}][,script=@var{file}][,downscript=@var{dfile}][,br=@var{bridge}][,helper=@var{helper}]
Connect the host TAP network interface @var{name} to VLAN @var{n}.
Use the network script @var{file} to configure it and the network script
@@ -1900,8 +1901,9 @@ automatically provides one. The default network configure script is
to disable script execution.
If running QEMU as an unprivileged user, use the network helper
-@var{helper} to configure the TAP interface. The default network
-helper executable is @file{/path/to/qemu-bridge-helper}.
+@var{helper} to configure the TAP interface and attach it to the bridge.
+The default network helper executable is @file{/path/to/qemu-bridge-helper}
+and the default bridge device is @file{br0}.
@option{fd}=@var{h} can be used to specify the handle of an already
opened host TAP interface.
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 17/27] net: limit allocation in nc_sendv_compat
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (15 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 16/27] tap: Allow specifying a bridge Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 18/27] e1000e: Flush all receive queues on receive enable Jason Wang
` (10 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell; +Cc: qemu-devel, Peter Lieven, Jason Wang
From: Peter Lieven <pl@kamp.de>
we only need to allocate enough memory to hold the packet. This might be
less than NET_BUFSIZE. Additionally fail early if the packet is larger
than NET_BUFSIZE.
Signed-off-by: Peter Lieven <pl@kamp.de>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
net/net.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/net/net.c b/net/net.c
index 0bec096..ec984bf 100644
--- a/net/net.c
+++ b/net/net.c
@@ -690,9 +690,13 @@ static ssize_t nc_sendv_compat(NetClientState *nc, const struct iovec *iov,
buffer = iov[0].iov_base;
offset = iov[0].iov_len;
} else {
- buf = g_new(uint8_t, NET_BUFSIZE);
+ offset = iov_size(iov, iovcnt);
+ if (offset > NET_BUFSIZE) {
+ return -1;
+ }
+ buf = g_malloc(offset);
buffer = buf;
- offset = iov_to_buf(iov, iovcnt, 0, buf, NET_BUFSIZE);
+ offset = iov_to_buf(iov, iovcnt, 0, buf, offset);
}
if (flags & QEMU_NET_PACKET_FLAG_RAW && nc->info->receive_raw) {
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 18/27] e1000e: Flush all receive queues on receive enable
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (16 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 17/27] net: limit allocation in nc_sendv_compat Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 19/27] e1000e: Flush receive queues on link up Jason Wang
` (9 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell; +Cc: qemu-devel, Dmitry Fleytman, Jason Wang
From: Dmitry Fleytman <dmitry@daynix.com>
Before this patch first netdev queue only was flushed.
Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
hw/net/e1000e.c | 2 +-
hw/net/e1000e_core.c | 2 +-
hw/net/e1000e_core.h | 3 +++
3 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/hw/net/e1000e.c b/hw/net/e1000e.c
index bad43f4..4994e1c 100644
--- a/hw/net/e1000e.c
+++ b/hw/net/e1000e.c
@@ -400,7 +400,7 @@ static void e1000e_write_config(PCIDevice *pci_dev, uint32_t address,
if (range_covers_byte(address, len, PCI_COMMAND) &&
(pci_dev->config[PCI_COMMAND] & PCI_COMMAND_MASTER)) {
- qemu_flush_queued_packets(qemu_get_queue(s->nic));
+ e1000e_start_recv(&s->core);
}
}
diff --git a/hw/net/e1000e_core.c b/hw/net/e1000e_core.c
index 03e3c46..ea2a484 100644
--- a/hw/net/e1000e_core.c
+++ b/hw/net/e1000e_core.c
@@ -953,7 +953,7 @@ e1000e_has_rxbufs(E1000ECore *core, const E1000E_RingInfo *r,
core->rx_desc_buf_size;
}
-static inline void
+void
e1000e_start_recv(E1000ECore *core)
{
int i;
diff --git a/hw/net/e1000e_core.h b/hw/net/e1000e_core.h
index 5f413a9..1ff6978 100644
--- a/hw/net/e1000e_core.h
+++ b/hw/net/e1000e_core.h
@@ -144,3 +144,6 @@ e1000e_receive(E1000ECore *core, const uint8_t *buf, size_t size);
ssize_t
e1000e_receive_iov(E1000ECore *core, const struct iovec *iov, int iovcnt);
+
+void
+e1000e_start_recv(E1000ECore *core);
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 19/27] e1000e: Flush receive queues on link up
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (17 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 18/27] e1000e: Flush all receive queues on receive enable Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 20/27] e1000e: Fix CTRL_EXT.EIAME behavior Jason Wang
` (8 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell; +Cc: qemu-devel, Dmitry Fleytman, Jason Wang
From: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
hw/net/e1000e_core.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/hw/net/e1000e_core.c b/hw/net/e1000e_core.c
index ea2a484..e8d50f6 100644
--- a/hw/net/e1000e_core.c
+++ b/hw/net/e1000e_core.c
@@ -1807,6 +1807,7 @@ e1000e_core_set_link_status(E1000ECore *core)
core->autoneg_timer);
} else {
e1000x_update_regs_on_link_up(core->mac, core->phy[0]);
+ e1000e_start_recv(core);
}
}
@@ -2187,6 +2188,8 @@ e1000e_autoneg_timer(void *opaque)
E1000ECore *core = opaque;
if (!qemu_get_queue(core->owner_nic)->link_down) {
e1000x_update_regs_on_autoneg_done(core->mac, core->phy[0]);
+ e1000e_start_recv(core);
+
e1000e_update_flowctl_status(core);
/* signal link status change to the guest */
e1000e_set_interrupt_cause(core, E1000_ICR_LSC);
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 20/27] e1000e: Fix CTRL_EXT.EIAME behavior
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (18 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 19/27] e1000e: Flush receive queues on link up Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 21/27] e1000e: Fix PBACLR implementation Jason Wang
` (7 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell; +Cc: qemu-devel, Dmitry Fleytman, Jason Wang
From: Dmitry Fleytman <dmitry@daynix.com>
CTRL_EXT.EIAME bit controls clearing of IAM bits,
but current code clears IMS bits instead.
See spec. 10.2.2.5 Extended Device Control Register.
Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
hw/net/e1000e_core.c | 4 ++--
hw/net/trace-events | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/hw/net/e1000e_core.c b/hw/net/e1000e_core.c
index e8d50f6..a198a88 100644
--- a/hw/net/e1000e_core.c
+++ b/hw/net/e1000e_core.c
@@ -2008,8 +2008,8 @@ e1000e_msix_notify_one(E1000ECore *core, uint32_t cause, uint32_t int_cfg)
}
if (core->mac[CTRL_EXT] & E1000_CTRL_EXT_EIAME) {
- trace_e1000e_irq_ims_clear_eiame(core->mac[IAM], cause);
- e1000e_clear_ims_bits(core, core->mac[IAM] & cause);
+ trace_e1000e_irq_iam_clear_eiame(core->mac[IAM], cause);
+ core->mac[IAM] &= ~cause;
}
trace_e1000e_irq_icr_clear_eiac(core->mac[ICR], core->mac[EIAC]);
diff --git a/hw/net/trace-events b/hw/net/trace-events
index 47ab14a..1a5c909 100644
--- a/hw/net/trace-events
+++ b/hw/net/trace-events
@@ -223,7 +223,7 @@ e1000e_irq_icr_read_entry(uint32_t icr) "Starting ICR read. Current ICR: 0x%x"
e1000e_irq_icr_read_exit(uint32_t icr) "Ending ICR read. Current ICR: 0x%x"
e1000e_irq_icr_clear_zero_ims(void) "Clearing ICR on read due to zero IMS"
e1000e_irq_icr_clear_iame(void) "Clearing ICR on read due to IAME"
-e1000e_irq_ims_clear_eiame(uint32_t iam, uint32_t cause) "Clearing IMS due to EIAME, IAM: 0x%X, cause: 0x%X"
+e1000e_irq_iam_clear_eiame(uint32_t iam, uint32_t cause) "Clearing IMS due to EIAME, IAM: 0x%X, cause: 0x%X"
e1000e_irq_icr_clear_eiac(uint32_t icr, uint32_t eiac) "Clearing ICR bits due to EIAC, ICR: 0x%X, EIAC: 0x%X"
e1000e_irq_ims_clear_set_imc(uint32_t val) "Clearing IMS bits due to IMC write 0x%x"
e1000e_irq_fire_delayed_interrupts(void) "Firing delayed interrupts"
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 21/27] e1000e: Fix PBACLR implementation
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (19 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 20/27] e1000e: Fix CTRL_EXT.EIAME behavior Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 22/27] e1000e: Fix OTHER interrupts processing for MSI-X Jason Wang
` (6 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell; +Cc: qemu-devel, Dmitry Fleytman, Jason Wang
From: Dmitry Fleytman <dmitry@daynix.com>
This patch fixes incorrect check for
interrypt type being used.
PBSCLR register is valid for MSI-X only.
See spec. 10.2.3.13 MSI—X PBA Clear
Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
hw/net/e1000e_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/net/e1000e_core.c b/hw/net/e1000e_core.c
index a198a88..a5751ac 100644
--- a/hw/net/e1000e_core.c
+++ b/hw/net/e1000e_core.c
@@ -2347,7 +2347,7 @@ e1000e_set_pbaclr(E1000ECore *core, int index, uint32_t val)
core->mac[PBACLR] = val & E1000_PBACLR_VALID_MASK;
- if (msix_enabled(core->owner)) {
+ if (!msix_enabled(core->owner)) {
return;
}
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 22/27] e1000e: Fix OTHER interrupts processing for MSI-X
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (20 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 21/27] e1000e: Fix PBACLR implementation Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 23/27] e1000e: Fix spurious RX TCP ACK interrupts Jason Wang
` (5 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell; +Cc: qemu-devel, Dmitry Fleytman, Jason Wang
From: Dmitry Fleytman <dmitry@daynix.com>
Interrupt mask for legacy OTHER causes should
not apply to MSI-X OTHER cause.
Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
hw/net/e1000e_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/net/e1000e_core.c b/hw/net/e1000e_core.c
index a5751ac..d26b611 100644
--- a/hw/net/e1000e_core.c
+++ b/hw/net/e1000e_core.c
@@ -2131,7 +2131,7 @@ e1000e_update_interrupt_state(E1000ECore *core)
/* Set ICR[OTHER] for MSI-X */
if (is_msix) {
- if (core->mac[ICR] & core->mac[IMS] & E1000_ICR_OTHER_CAUSES) {
+ if (core->mac[ICR] & E1000_ICR_OTHER_CAUSES) {
core->mac[ICR] |= E1000_ICR_OTHER;
trace_e1000e_irq_add_msi_other(core->mac[ICR]);
}
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 23/27] e1000e: Fix spurious RX TCP ACK interrupts
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (21 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 22/27] e1000e: Fix OTHER interrupts processing for MSI-X Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 24/27] e1000e: Fix EIAC register implementation Jason Wang
` (4 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell; +Cc: qemu-devel, Dmitry Fleytman, Jason Wang
From: Dmitry Fleytman <dmitry@daynix.com>
Do not raise ACK interrupts when
RFCTL.ACKDIS bit is set (see spec. 10.2.5.16).
Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
hw/net/e1000e_core.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/hw/net/e1000e_core.c b/hw/net/e1000e_core.c
index d26b611..0298136 100644
--- a/hw/net/e1000e_core.c
+++ b/hw/net/e1000e_core.c
@@ -1710,7 +1710,8 @@ e1000e_receive_iov(E1000ECore *core, const struct iovec *iov, int iovcnt)
}
/* Perform ACK receive detection */
- if (e1000e_is_tcp_ack(core, core->rx_pkt)) {
+ if (!(core->mac[RFCTL] & E1000_RFCTL_ACK_DIS) &&
+ (e1000e_is_tcp_ack(core, core->rx_pkt))) {
n |= E1000_ICS_ACK;
}
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 24/27] e1000e: Fix EIAC register implementation
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (22 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 23/27] e1000e: Fix spurious RX TCP ACK interrupts Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 25/27] net: mcf: limit buffer descriptor count Jason Wang
` (3 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell; +Cc: qemu-devel, Dmitry Fleytman, Jason Wang
From: Dmitry Fleytman <dmitry@daynix.com>
This patch fixes 2 issues:
1. Bits set in EIAC register should be cleared
from IMS when EIAM is not used.
2. Only bit that corresonds to the interrupt being
raised should be cleared.
See spec. 10.2.4.7 Interrupt Auto Clear
Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
hw/net/e1000e_core.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/hw/net/e1000e_core.c b/hw/net/e1000e_core.c
index 0298136..6505983 100644
--- a/hw/net/e1000e_core.c
+++ b/hw/net/e1000e_core.c
@@ -2015,13 +2015,17 @@ e1000e_msix_notify_one(E1000ECore *core, uint32_t cause, uint32_t int_cfg)
trace_e1000e_irq_icr_clear_eiac(core->mac[ICR], core->mac[EIAC]);
- if (core->mac[EIAC] & E1000_ICR_OTHER) {
- effective_eiac = (core->mac[EIAC] & E1000_EIAC_MASK) |
- E1000_ICR_OTHER_CAUSES;
- } else {
- effective_eiac = core->mac[EIAC] & E1000_EIAC_MASK;
+ effective_eiac = core->mac[EIAC] & cause;
+
+ if (effective_eiac == E1000_ICR_OTHER) {
+ effective_eiac |= E1000_ICR_OTHER_CAUSES;
}
+
core->mac[ICR] &= ~effective_eiac;
+
+ if (!(core->mac[CTRL_EXT] & E1000_CTRL_EXT_IAME)) {
+ core->mac[IMS] &= ~effective_eiac;
+ }
}
static void
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 25/27] net: mcf: limit buffer descriptor count
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (23 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 24/27] e1000e: Fix EIAC register implementation Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 26/27] mcf_fec: fix error in qemu_send_packet argument Jason Wang
` (2 subsequent siblings)
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell; +Cc: qemu-devel, Prasad J Pandit, Jason Wang
From: Prasad J Pandit <pjp@fedoraproject.org>
ColdFire Fast Ethernet Controller uses buffer descriptors to manage
data flow to/fro receive & transmit queues. While transmitting
packets, it could continue to read buffer descriptors if a buffer
descriptor has length of zero and has crafted values in bd.flags.
Set upper limit to number of buffer descriptors.
Reported-by: Li Qiang <liqiang6-s@360.cn>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
hw/net/mcf_fec.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/hw/net/mcf_fec.c b/hw/net/mcf_fec.c
index 0ee8ad9..d31fea1 100644
--- a/hw/net/mcf_fec.c
+++ b/hw/net/mcf_fec.c
@@ -23,6 +23,7 @@ do { printf("mcf_fec: " fmt , ## __VA_ARGS__); } while (0)
#define DPRINTF(fmt, ...) do {} while(0)
#endif
+#define FEC_MAX_DESC 1024
#define FEC_MAX_FRAME_SIZE 2032
typedef struct {
@@ -149,7 +150,7 @@ static void mcf_fec_do_tx(mcf_fec_state *s)
uint32_t addr;
mcf_fec_bd bd;
int frame_size;
- int len;
+ int len, descnt = 0;
uint8_t frame[FEC_MAX_FRAME_SIZE];
uint8_t *ptr;
@@ -157,7 +158,7 @@ static void mcf_fec_do_tx(mcf_fec_state *s)
ptr = frame;
frame_size = 0;
addr = s->tx_descriptor;
- while (1) {
+ while (descnt++ < FEC_MAX_DESC) {
mcf_fec_read_bd(&bd, addr);
DPRINTF("tx_bd %x flags %04x len %d data %08x\n",
addr, bd.flags, bd.length, bd.data);
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 26/27] mcf_fec: fix error in qemu_send_packet argument
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (24 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 25/27] net: mcf: limit buffer descriptor count Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 27/27] imx_fec: " Jason Wang
2016-09-26 21:04 ` [Qemu-devel] [PULL 00/27] Net patches Peter Maydell
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell; +Cc: qemu-devel, Paolo Bonzini, Jason Wang
From: Paolo Bonzini <pbonzini@redhat.com>
This uses the wrong frame size for packets composed of multiple
descriptors.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
hw/net/mcf_fec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/net/mcf_fec.c b/hw/net/mcf_fec.c
index d31fea1..dc61bac 100644
--- a/hw/net/mcf_fec.c
+++ b/hw/net/mcf_fec.c
@@ -177,7 +177,7 @@ static void mcf_fec_do_tx(mcf_fec_state *s)
if (bd.flags & FEC_BD_L) {
/* Last buffer in frame. */
DPRINTF("Sending packet\n");
- qemu_send_packet(qemu_get_queue(s->nic), frame, len);
+ qemu_send_packet(qemu_get_queue(s->nic), frame, frame_size);
ptr = frame;
frame_size = 0;
s->eir |= FEC_INT_TXF;
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* [Qemu-devel] [PULL 27/27] imx_fec: fix error in qemu_send_packet argument
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (25 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 26/27] mcf_fec: fix error in qemu_send_packet argument Jason Wang
@ 2016-09-26 8:59 ` Jason Wang
2016-09-26 21:04 ` [Qemu-devel] [PULL 00/27] Net patches Peter Maydell
27 siblings, 0 replies; 29+ messages in thread
From: Jason Wang @ 2016-09-26 8:59 UTC (permalink / raw)
To: peter.maydell; +Cc: qemu-devel, Paolo Bonzini, Jason Wang
From: Paolo Bonzini <pbonzini@redhat.com>
This uses the wrong frame size for packets composed of multiple
descriptors.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
hw/net/imx_fec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/net/imx_fec.c b/hw/net/imx_fec.c
index 1c415ab..50c7564 100644
--- a/hw/net/imx_fec.c
+++ b/hw/net/imx_fec.c
@@ -429,7 +429,7 @@ static void imx_fec_do_tx(IMXFECState *s)
frame_size += len;
if (bd.flags & ENET_BD_L) {
/* Last buffer in frame. */
- qemu_send_packet(qemu_get_queue(s->nic), frame, len);
+ qemu_send_packet(qemu_get_queue(s->nic), frame, frame_size);
ptr = frame;
frame_size = 0;
s->regs[ENET_EIR] |= ENET_INT_TXF;
--
2.7.4
^ permalink raw reply related [flat|nested] 29+ messages in thread
* Re: [Qemu-devel] [PULL 00/27] Net patches
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
` (26 preceding siblings ...)
2016-09-26 8:59 ` [Qemu-devel] [PULL 27/27] imx_fec: " Jason Wang
@ 2016-09-26 21:04 ` Peter Maydell
27 siblings, 0 replies; 29+ messages in thread
From: Peter Maydell @ 2016-09-26 21:04 UTC (permalink / raw)
To: Jason Wang; +Cc: QEMU Developers
On 26 September 2016 at 01:59, Jason Wang <jasowang@redhat.com> wrote:
> The following changes since commit 3b71ec8516bb50e9a743645bf139571de0b39f61:
>
> Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging (2016-09-23 16:15:33 +0100)
>
> are available in the git repository at:
>
> https://github.com/jasowang/qemu.git tags/net-pull-request
>
> for you to fetch changes up to 172213e93226cf1fa0a230de5137020cd24ae715:
>
> imx_fec: fix error in qemu_send_packet argument (2016-09-26 16:28:14 +0800)
>
> ----------------------------------------------------------------
>
> - allow to specify the rx queue size for virtio-net
> - colo packet comparing thread
> - filter-writer to rewrite tcp seq for comparing and secondary VM
> - align some e1000e behaviour to spec
> - allow to specify bridge for a tap ifup script
>
> ----------------------------------------------------------------
Fails to build (both gcc and clang):
/home/pm215/qemu/net/filter-rewriter.c: In function ‘colo_rewriter_receive_iov’:
/home/pm215/qemu/net/filter-rewriter.c:158:5: error: missing braces
around initializer [-Werror=missing-braces]
ConnectionKey key = { 0 };
^
/home/pm215/qemu/net/filter-rewriter.c:158:5: error: (near
initialization for ‘key.src’) [-Werror=missing-braces]
cc1: all warnings being treated as errors
make: *** [net/filter-rewriter.o] Error 1
make: *** Waiting for unfinished jobs....
/home/pm215/qemu/net/colo-compare.c: In function ‘packet_enqueue’:
/home/pm215/qemu/net/colo-compare.c:114:5: error: missing braces
around initializer [-Werror=missing-braces]
ConnectionKey key = { 0 };
^
/home/pm215/qemu/net/colo-compare.c:114:5: error: (near initialization
for ‘key.src’) [-Werror=missing-braces]
thanks
-- PMM
^ permalink raw reply [flat|nested] 29+ messages in thread
end of thread, other threads:[~2016-09-26 21:05 UTC | newest]
Thread overview: 29+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-09-26 8:59 [Qemu-devel] [PULL 00/27] Net patches Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 01/27] virtio-net: allow increasing rx queue size Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 02/27] net: hmp_host_net_remove: Del the -net option of the removed host_net Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 03/27] qemu-char: Add qemu_chr_add_handlers_full() for GMaincontext Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 04/27] colo-compare: introduce colo compare initialization Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 05/27] net/colo.c: add colo.c to define and handle packet Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 06/27] Jhash: add linux kernel jhashtable in qemu Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 07/27] colo-compare: track connection and enqueue packet Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 08/27] colo-compare: introduce packet comparison thread Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 09/27] colo-compare: add TCP, UDP, ICMP packet comparison Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 10/27] filter-rewriter: introduce filter-rewriter initialization Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 11/27] filter-rewriter: track connection and parse packet Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 12/27] filter-rewriter: rewrite tcp packet to keep secondary connection Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 13/27] MAINTAINERS: add maintainer for COLO-proxy Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 14/27] docs: Add documentation " Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 15/27] e1000: fix buliding complaint Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 16/27] tap: Allow specifying a bridge Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 17/27] net: limit allocation in nc_sendv_compat Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 18/27] e1000e: Flush all receive queues on receive enable Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 19/27] e1000e: Flush receive queues on link up Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 20/27] e1000e: Fix CTRL_EXT.EIAME behavior Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 21/27] e1000e: Fix PBACLR implementation Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 22/27] e1000e: Fix OTHER interrupts processing for MSI-X Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 23/27] e1000e: Fix spurious RX TCP ACK interrupts Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 24/27] e1000e: Fix EIAC register implementation Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 25/27] net: mcf: limit buffer descriptor count Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 26/27] mcf_fec: fix error in qemu_send_packet argument Jason Wang
2016-09-26 8:59 ` [Qemu-devel] [PULL 27/27] imx_fec: " Jason Wang
2016-09-26 21:04 ` [Qemu-devel] [PULL 00/27] Net patches Peter Maydell
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