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net: add API to disable/enable polling

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When vhost is bound to a backend device, we need to stop polling it when
vhost is started, and restart polling when vhost is stopped.
Add an API for that for use by vhost, and implement in tap backend.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Michael S. Tsirkin 2009-12-24 14:46:29 +02:00 committed by Anthony Liguori
parent c9f398e53f
commit ceb696159d
2 changed files with 11 additions and 0 deletions
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3
net.h
View File

@ -1,6 +1,7 @@
#ifndef QEMU_NET_H
#define QEMU_NET_H
#include <stdbool.h>
#include "qemu-queue.h"
#include "qemu-common.h"
#include "qdict.h"
@ -36,6 +37,7 @@ typedef enum {
NET_CLIENT_TYPE_DUMP
} net_client_type;
typedef void (NetPoll)(VLANClientState *, bool enable);
typedef int (NetCanReceive)(VLANClientState *);
typedef ssize_t (NetReceive)(VLANClientState *, const uint8_t *, size_t);
typedef ssize_t (NetReceiveIOV)(VLANClientState *, const struct iovec *, int);
@ -51,6 +53,7 @@ typedef struct NetClientInfo {
NetCanReceive *can_receive;
NetCleanup *cleanup;
LinkStatusChanged *link_status_changed;
NetPoll *poll;
} NetClientInfo;
struct VLANClientState {

8
net/tap.c
View File

@ -262,6 +262,13 @@ static void tap_cleanup(VLANClientState *nc)
close(s->fd);
}
static void tap_poll(VLANClientState *nc, bool enable)
{
TAPState *s = DO_UPCAST(TAPState, nc, nc);
tap_read_poll(s, enable);
tap_write_poll(s, enable);
}
/* fd support */
static NetClientInfo net_tap_info = {
@ -270,6 +277,7 @@ static NetClientInfo net_tap_info = {
.receive = tap_receive,
.receive_raw = tap_receive_raw,
.receive_iov = tap_receive_iov,
.poll = tap_poll,
.cleanup = tap_cleanup,
};