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net: Flush queued packets when guest resumes
Since commit 6e99c63
"net/socket: Drop net_socket_can_send" and friends,
net queues need to be explicitly flushed after qemu_can_send_packet()
returns false, because the netdev side will disable the polling of fd.
This fixes the case of "cont" after "stop" (or migration).
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 1436232067-29144-1-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
parent
b49b8c572f
commit
625de449fc
19
net/net.c
19
net/net.c
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@ -1257,14 +1257,19 @@ void qmp_set_link(const char *name, bool up, Error **errp)
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static void net_vm_change_state_handler(void *opaque, int running,
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RunState state)
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{
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/* Complete all queued packets, to guarantee we don't modify
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* state later when VM is not running.
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*/
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if (!running) {
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NetClientState *nc;
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NetClientState *tmp;
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NetClientState *nc;
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NetClientState *tmp;
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QTAILQ_FOREACH_SAFE(nc, &net_clients, next, tmp) {
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QTAILQ_FOREACH_SAFE(nc, &net_clients, next, tmp) {
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if (running) {
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/* Flush queued packets and wake up backends. */
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if (nc->peer && qemu_can_send_packet(nc)) {
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qemu_flush_queued_packets(nc->peer);
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}
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} else {
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/* Complete all queued packets, to guarantee we don't modify
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* state later when VM is not running.
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*/
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qemu_flush_or_purge_queued_packets(nc, true);
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}
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}
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