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[Qemu-devel] [PATCH COLO-Frame v15 31/38] net/filter: Add a 'status' pro
From: |
zhanghailiang |
Subject: |
[Qemu-devel] [PATCH COLO-Frame v15 31/38] net/filter: Add a 'status' property for filter object |
Date: |
Mon, 22 Feb 2016 10:40:25 +0800 |
With this property, users can control if this filter is 'enable'
or 'disable'. The default behavior for filter is enabled.
We will skip the disabled filter when delivering packets in net layer.
Signed-off-by: zhanghailiang <address@hidden>
Cc: Jason Wang <address@hidden>
Cc: Yang Hongyang <address@hidden>
---
v15:
- Rename qemu_need_skip_netfilter to qemu_netfilter_can_skip (Jason)
- Remove some useless comment (Jason)
---
include/net/filter.h | 1 +
net/filter.c | 40 ++++++++++++++++++++++++++++++++++++++++
qemu-options.hx | 4 +++-
3 files changed, 44 insertions(+), 1 deletion(-)
diff --git a/include/net/filter.h b/include/net/filter.h
index 5639976..af3c53c 100644
--- a/include/net/filter.h
+++ b/include/net/filter.h
@@ -55,6 +55,7 @@ struct NetFilterState {
char *netdev_id;
NetClientState *netdev;
NetFilterDirection direction;
+ bool enabled;
QTAILQ_ENTRY(NetFilterState) next;
};
diff --git a/net/filter.c b/net/filter.c
index d2a514e..f114dfb 100644
--- a/net/filter.c
+++ b/net/filter.c
@@ -17,6 +17,11 @@
#include "qom/object_interfaces.h"
#include "qemu/iov.h"
+static inline bool qemu_can_skip_netfilter(NetFilterState *nf)
+{
+ return nf->enabled ? false : true;
+}
+
ssize_t qemu_netfilter_receive(NetFilterState *nf,
NetFilterDirection direction,
NetClientState *sender,
@@ -25,6 +30,9 @@ ssize_t qemu_netfilter_receive(NetFilterState *nf,
int iovcnt,
NetPacketSent *sent_cb)
{
+ if (qemu_can_skip_netfilter(nf)) {
+ return 0;
+ }
if (nf->direction == direction ||
nf->direction == NET_FILTER_DIRECTION_ALL) {
return NETFILTER_GET_CLASS(OBJECT(nf))->receive_iov(
@@ -134,8 +142,37 @@ static void netfilter_set_direction(Object *obj, int
direction, Error **errp)
nf->direction = direction;
}
+static char *netfilter_get_status(Object *obj, Error **errp)
+{
+ NetFilterState *nf = NETFILTER(obj);
+
+ if (nf->enabled) {
+ return g_strdup("enable");
+ } else {
+ return g_strdup("disable");
+ }
+}
+
+static void netfilter_set_status(Object *obj, const char *str, Error **errp)
+{
+ NetFilterState *nf = NETFILTER(obj);
+
+ if (!strcmp(str, "enable")) {
+ nf->enabled = true;
+ } else if (!strcmp(str, "disable")) {
+ nf->enabled = false;
+ } else {
+ error_setg(errp, "Invalid value for netfilter status, "
+ "should be 'enable' or 'disable'");
+ }
+}
+
static void netfilter_init(Object *obj)
{
+ NetFilterState *nf = NETFILTER(obj);
+
+ nf->enabled = true;
+
object_property_add_str(obj, "netdev",
netfilter_get_netdev_id, netfilter_set_netdev_id,
NULL);
@@ -143,6 +180,9 @@ static void netfilter_init(Object *obj)
NetFilterDirection_lookup,
netfilter_get_direction, netfilter_set_direction,
NULL);
+ object_property_add_str(obj, "status",
+ netfilter_get_status, netfilter_set_status,
+ NULL);
}
static void netfilter_complete(UserCreatable *uc, Error **errp)
diff --git a/qemu-options.hx b/qemu-options.hx
index 2f0465e..6f302e6 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -3742,11 +3742,13 @@ version by providing the @var{passwordid} parameter.
This provides
the ID of a previously created @code{secret} object containing the
password for decryption.
address@hidden -object
filter-buffer,address@hidden,address@hidden,address@hidden,address@hidden|rx|tx}]
address@hidden -object
filter-buffer,address@hidden,address@hidden,address@hidden,address@hidden|rx|tx}][,address@hidden|disable}]
Interval @var{t} can't be 0, this filter batches the packet delivery: all
packets arriving in a given interval on netdev @var{netdevid} are delayed
until the end of the interval. Interval is in microseconds.
address@hidden is optional that indicate whether the netfilter is enabled
+or disabled, the default status for netfilter will be enabled.
queue @var{all|rx|tx} is an option that can be applied to any netfilter.
--
1.8.3.1
- [Qemu-devel] [PATCH COLO-Frame v15 18/38] COLO failover: Introduce state to record failover process, (continued)
- [Qemu-devel] [PATCH COLO-Frame v15 18/38] COLO failover: Introduce state to record failover process, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 24/38] COLO: Process shutdown command for VM in COLO state, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 29/38] COLO: Separate the process of saving/loading ram and device state, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 33/38] net: Add notifier/callback for netdev init, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 13/38] COLO: Load VMState into qsb before restore it, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 32/38] filter-buffer: Accept zero interval, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 35/38] COLO: manage the status of buffer filters for PVM, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 26/38] savevm: Introduce two helper functions for save/find loadvm_handlers entry, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 34/38] COLO/filter: add each netdev a buffer filter, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 21/38] qmp event: Add COLO_EXIT event to notify users while exited from COLO, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 31/38] net/filter: Add a 'status' property for filter object,
zhanghailiang <=
- [Qemu-devel] [PATCH COLO-Frame v15 38/38] COLO: Add block replication into colo process, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 22/38] COLO failover: Shutdown related socket fd when do failover, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 36/38] filter-buffer: make filter_buffer_flush() public, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 37/38] COLO: flush buffered packets in checkpoint process or exit COLO, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 16/38] COLO: synchronize PVM's state to SVM periodically, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 27/38] migration/savevm: Add new helpers to process the different stages of loadvm, zhanghailiang, 2016/02/21
- [Qemu-devel] [PATCH COLO-Frame v15 28/38] migration/savevm: Export two helper functions for savevm process, zhanghailiang, 2016/02/21
- Re: [Qemu-devel] [PATCH COLO-Frame v15 00/38] COarse-grain LOck-stepping(COLO) Virtual Machines for Non-stop Service (FT), Dr. David Alan Gilbert, 2016/02/25